LXR linux/drivers/scsi/advansys.c

   1/*
   2 * advansys.c - Linux Host Driver for AdvanSys SCSI Adapters
   3 *
   4 * Copyright (c) 1995-2000 Advanced System Products, Inc.
   5 * Copyright (c) 2000-2001 ConnectCom Solutions, Inc.
   6 * Copyright (c) 2007 Matthew Wilcox <matthew@wil.cx>
   7 * Copyright (c) 2014 Hannes Reinecke <hare@suse.de>
   8 * All Rights Reserved.
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation; either version 2 of the License, or
  13 * (at your option) any later version.
  14 */
  15
  16/*
  17 * As of March 8, 2000 Advanced System Products, Inc. (AdvanSys)
  18 * changed its name to ConnectCom Solutions, Inc.
  19 * On June 18, 2001 Initio Corp. acquired ConnectCom's SCSI assets
  20 */
  21
  22#include <linux/module.h>
  23#include <linux/string.h>
  24#include <linux/kernel.h>
  25#include <linux/types.h>
  26#include <linux/ioport.h>
  27#include <linux/interrupt.h>
  28#include <linux/delay.h>
  29#include <linux/slab.h>
  30#include <linux/mm.h>
  31#include <linux/proc_fs.h>
  32#include <linux/init.h>
  33#include <linux/blkdev.h>
  34#include <linux/isa.h>
  35#include <linux/eisa.h>
  36#include <linux/pci.h>
  37#include <linux/spinlock.h>
  38#include <linux/dma-mapping.h>
  39#include <linux/firmware.h>
  40#include <linux/dmapool.h>
  41
  42#include <asm/io.h>
  43#include <asm/dma.h>
  44
  45#include <scsi/scsi_cmnd.h>
  46#include <scsi/scsi_device.h>
  47#include <scsi/scsi_tcq.h>
  48#include <scsi/scsi.h>
  49#include <scsi/scsi_host.h>
  50
  51#define DRV_NAME "advansys"
  52#define ASC_VERSION "3.5"       /* AdvanSys Driver Version */
  53
  54/* FIXME:
  55 *
  56 *  1. Use scsi_transport_spi
  57 *  2. advansys_info is not safe against multiple simultaneous callers
  58 *  3. Add module_param to override ISA/VLB ioport array
  59 */
  60
  61/* Enable driver /proc statistics. */
  62#define ADVANSYS_STATS
  63
  64/* Enable driver tracing. */
  65#undef ADVANSYS_DEBUG
  66
  67typedef unsigned char uchar;
  68
  69#define isodd_word(val)   ((((uint)val) & (uint)0x0001) != 0)
  70
  71#define PCI_VENDOR_ID_ASP               0x10cd
  72#define PCI_DEVICE_ID_ASP_1200A         0x1100
  73#define PCI_DEVICE_ID_ASP_ABP940        0x1200
  74#define PCI_DEVICE_ID_ASP_ABP940U       0x1300
  75#define PCI_DEVICE_ID_ASP_ABP940UW      0x2300
  76#define PCI_DEVICE_ID_38C0800_REV1      0x2500
  77#define PCI_DEVICE_ID_38C1600_REV1      0x2700
  78
  79#define PortAddr                 unsigned int   /* port address size  */
  80#define inp(port)                inb(port)
  81#define outp(port, byte)         outb((byte), (port))
  82
  83#define inpw(port)               inw(port)
  84#define outpw(port, word)        outw((word), (port))
  85
  86#define ASC_MAX_SG_QUEUE    7
  87#define ASC_MAX_SG_LIST     255
  88
  89#define ASC_CS_TYPE  unsigned short
  90
  91#define ASC_IS_ISA          (0x0001)
  92#define ASC_IS_ISAPNP       (0x0081)
  93#define ASC_IS_EISA         (0x0002)
  94#define ASC_IS_PCI          (0x0004)
  95#define ASC_IS_PCI_ULTRA    (0x0104)
  96#define ASC_IS_PCMCIA       (0x0008)
  97#define ASC_IS_MCA          (0x0020)
  98#define ASC_IS_VL           (0x0040)
  99#define ASC_IS_WIDESCSI_16  (0x0100)
 100#define ASC_IS_WIDESCSI_32  (0x0200)
 101#define ASC_IS_BIG_ENDIAN   (0x8000)
 102
 103#define ASC_CHIP_MIN_VER_VL      (0x01)
 104#define ASC_CHIP_MAX_VER_VL      (0x07)
 105#define ASC_CHIP_MIN_VER_PCI     (0x09)
 106#define ASC_CHIP_MAX_VER_PCI     (0x0F)
 107#define ASC_CHIP_VER_PCI_BIT     (0x08)
 108#define ASC_CHIP_MIN_VER_ISA     (0x11)
 109#define ASC_CHIP_MIN_VER_ISA_PNP (0x21)
 110#define ASC_CHIP_MAX_VER_ISA     (0x27)
 111#define ASC_CHIP_VER_ISA_BIT     (0x30)
 112#define ASC_CHIP_VER_ISAPNP_BIT  (0x20)
 113#define ASC_CHIP_VER_ASYN_BUG    (0x21)
 114#define ASC_CHIP_VER_PCI             0x08
 115#define ASC_CHIP_VER_PCI_ULTRA_3150  (ASC_CHIP_VER_PCI | 0x02)
 116#define ASC_CHIP_VER_PCI_ULTRA_3050  (ASC_CHIP_VER_PCI | 0x03)
 117#define ASC_CHIP_MIN_VER_EISA (0x41)
 118#define ASC_CHIP_MAX_VER_EISA (0x47)
 119#define ASC_CHIP_VER_EISA_BIT (0x40)
 120#define ASC_CHIP_LATEST_VER_EISA   ((ASC_CHIP_MIN_VER_EISA - 1) + 3)
 121#define ASC_MAX_VL_DMA_COUNT    (0x07FFFFFFL)
 122#define ASC_MAX_PCI_DMA_COUNT   (0xFFFFFFFFL)
 123#define ASC_MAX_ISA_DMA_COUNT   (0x00FFFFFFL)
 124
 125#define ASC_SCSI_ID_BITS  3
 126#define ASC_SCSI_TIX_TYPE     uchar
 127#define ASC_ALL_DEVICE_BIT_SET  0xFF
 128#define ASC_SCSI_BIT_ID_TYPE  uchar
 129#define ASC_MAX_TID       7
 130#define ASC_MAX_LUN       7
 131#define ASC_SCSI_WIDTH_BIT_SET  0xFF
 132#define ASC_MAX_SENSE_LEN   32
 133#define ASC_MIN_SENSE_LEN   14
 134#define ASC_SCSI_RESET_HOLD_TIME_US  60
 135
 136/*
 137 * Narrow boards only support 12-byte commands, while wide boards
 138 * extend to 16-byte commands.
 139 */
 140#define ASC_MAX_CDB_LEN     12
 141#define ADV_MAX_CDB_LEN     16
 142
 143#define MS_SDTR_LEN    0x03
 144#define MS_WDTR_LEN    0x02
 145
 146#define ASC_SG_LIST_PER_Q   7
 147#define QS_FREE        0x00
 148#define QS_READY       0x01
 149#define QS_DISC1       0x02
 150#define QS_DISC2       0x04
 151#define QS_BUSY        0x08
 152#define QS_ABORTED     0x40
 153#define QS_DONE        0x80
 154#define QC_NO_CALLBACK   0x01
 155#define QC_SG_SWAP_QUEUE 0x02
 156#define QC_SG_HEAD       0x04
 157#define QC_DATA_IN       0x08
 158#define QC_DATA_OUT      0x10
 159#define QC_URGENT        0x20
 160#define QC_MSG_OUT       0x40
 161#define QC_REQ_SENSE     0x80
 162#define QCSG_SG_XFER_LIST  0x02
 163#define QCSG_SG_XFER_MORE  0x04
 164#define QCSG_SG_XFER_END   0x08
 165#define QD_IN_PROGRESS       0x00
 166#define QD_NO_ERROR          0x01
 167#define QD_ABORTED_BY_HOST   0x02
 168#define QD_WITH_ERROR        0x04
 169#define QD_INVALID_REQUEST   0x80
 170#define QD_INVALID_HOST_NUM  0x81
 171#define QD_INVALID_DEVICE    0x82
 172#define QD_ERR_INTERNAL      0xFF
 173#define QHSTA_NO_ERROR               0x00
 174#define QHSTA_M_SEL_TIMEOUT          0x11
 175#define QHSTA_M_DATA_OVER_RUN        0x12
 176#define QHSTA_M_DATA_UNDER_RUN       0x12
 177#define QHSTA_M_UNEXPECTED_BUS_FREE  0x13
 178#define QHSTA_M_BAD_BUS_PHASE_SEQ    0x14
 179#define QHSTA_D_QDONE_SG_LIST_CORRUPTED 0x21
 180#define QHSTA_D_ASC_DVC_ERROR_CODE_SET  0x22
 181#define QHSTA_D_HOST_ABORT_FAILED       0x23
 182#define QHSTA_D_EXE_SCSI_Q_FAILED       0x24
 183#define QHSTA_D_EXE_SCSI_Q_BUSY_TIMEOUT 0x25
 184#define QHSTA_D_ASPI_NO_BUF_POOL        0x26
 185#define QHSTA_M_WTM_TIMEOUT         0x41
 186#define QHSTA_M_BAD_CMPL_STATUS_IN  0x42
 187#define QHSTA_M_NO_AUTO_REQ_SENSE   0x43
 188#define QHSTA_M_AUTO_REQ_SENSE_FAIL 0x44
 189#define QHSTA_M_TARGET_STATUS_BUSY  0x45
 190#define QHSTA_M_BAD_TAG_CODE        0x46
 191#define QHSTA_M_BAD_QUEUE_FULL_OR_BUSY  0x47
 192#define QHSTA_M_HUNG_REQ_SCSI_BUS_RESET 0x48
 193#define QHSTA_D_LRAM_CMP_ERROR        0x81
 194#define QHSTA_M_MICRO_CODE_ERROR_HALT 0xA1
 195#define ASC_FLAG_SCSIQ_REQ        0x01
 196#define ASC_FLAG_BIOS_SCSIQ_REQ   0x02
 197#define ASC_FLAG_BIOS_ASYNC_IO    0x04
 198#define ASC_FLAG_SRB_LINEAR_ADDR  0x08
 199#define ASC_FLAG_WIN16            0x10
 200#define ASC_FLAG_WIN32            0x20
 201#define ASC_FLAG_ISA_OVER_16MB    0x40
 202#define ASC_FLAG_DOS_VM_CALLBACK  0x80
 203#define ASC_TAG_FLAG_EXTRA_BYTES               0x10
 204#define ASC_TAG_FLAG_DISABLE_DISCONNECT        0x04
 205#define ASC_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX  0x08
 206#define ASC_TAG_FLAG_DISABLE_CHK_COND_INT_HOST 0x40
 207#define ASC_SCSIQ_CPY_BEG              4
 208#define ASC_SCSIQ_SGHD_CPY_BEG         2
 209#define ASC_SCSIQ_B_FWD                0
 210#define ASC_SCSIQ_B_BWD                1
 211#define ASC_SCSIQ_B_STATUS             2
 212#define ASC_SCSIQ_B_QNO                3
 213#define ASC_SCSIQ_B_CNTL               4
 214#define ASC_SCSIQ_B_SG_QUEUE_CNT       5
 215#define ASC_SCSIQ_D_DATA_ADDR          8
 216#define ASC_SCSIQ_D_DATA_CNT          12
 217#define ASC_SCSIQ_B_SENSE_LEN         20
 218#define ASC_SCSIQ_DONE_INFO_BEG       22
 219#define ASC_SCSIQ_D_SRBPTR            22
 220#define ASC_SCSIQ_B_TARGET_IX         26
 221#define ASC_SCSIQ_B_CDB_LEN           28
 222#define ASC_SCSIQ_B_TAG_CODE          29
 223#define ASC_SCSIQ_W_VM_ID             30
 224#define ASC_SCSIQ_DONE_STATUS         32
 225#define ASC_SCSIQ_HOST_STATUS         33
 226#define ASC_SCSIQ_SCSI_STATUS         34
 227#define ASC_SCSIQ_CDB_BEG             36
 228#define ASC_SCSIQ_DW_REMAIN_XFER_ADDR 56
 229#define ASC_SCSIQ_DW_REMAIN_XFER_CNT  60
 230#define ASC_SCSIQ_B_FIRST_SG_WK_QP    48
 231#define ASC_SCSIQ_B_SG_WK_QP          49
 232#define ASC_SCSIQ_B_SG_WK_IX          50
 233#define ASC_SCSIQ_W_ALT_DC1           52
 234#define ASC_SCSIQ_B_LIST_CNT          6
 235#define ASC_SCSIQ_B_CUR_LIST_CNT      7
 236#define ASC_SGQ_B_SG_CNTL             4
 237#define ASC_SGQ_B_SG_HEAD_QP          5
 238#define ASC_SGQ_B_SG_LIST_CNT         6
 239#define ASC_SGQ_B_SG_CUR_LIST_CNT     7
 240#define ASC_SGQ_LIST_BEG              8
 241#define ASC_DEF_SCSI1_QNG    4
 242#define ASC_MAX_SCSI1_QNG    4
 243#define ASC_DEF_SCSI2_QNG    16
 244#define ASC_MAX_SCSI2_QNG    32
 245#define ASC_TAG_CODE_MASK    0x23
 246#define ASC_STOP_REQ_RISC_STOP      0x01
 247#define ASC_STOP_ACK_RISC_STOP      0x03
 248#define ASC_STOP_CLEAN_UP_BUSY_Q    0x10
 249#define ASC_STOP_CLEAN_UP_DISC_Q    0x20
 250#define ASC_STOP_HOST_REQ_RISC_HALT 0x40
 251#define ASC_TIDLUN_TO_IX(tid, lun)  (ASC_SCSI_TIX_TYPE)((tid) + ((lun)<<ASC_SCSI_ID_BITS))
 252#define ASC_TID_TO_TARGET_ID(tid)   (ASC_SCSI_BIT_ID_TYPE)(0x01 << (tid))
 253#define ASC_TIX_TO_TARGET_ID(tix)   (0x01 << ((tix) & ASC_MAX_TID))
 254#define ASC_TIX_TO_TID(tix)         ((tix) & ASC_MAX_TID)
 255#define ASC_TID_TO_TIX(tid)         ((tid) & ASC_MAX_TID)
 256#define ASC_TIX_TO_LUN(tix)         (((tix) >> ASC_SCSI_ID_BITS) & ASC_MAX_LUN)
 257#define ASC_QNO_TO_QADDR(q_no)      ((ASC_QADR_BEG)+((int)(q_no) << 6))
 258
 259typedef struct asc_scsiq_1 {
 260        uchar status;
 261        uchar q_no;
 262        uchar cntl;
 263        uchar sg_queue_cnt;
 264        uchar target_id;
 265        uchar target_lun;
 266        __le32 data_addr;
 267        __le32 data_cnt;
 268        __le32 sense_addr;
 269        uchar sense_len;
 270        uchar extra_bytes;
 271} ASC_SCSIQ_1;
 272
 273typedef struct asc_scsiq_2 {
 274        u32 srb_tag;
 275        uchar target_ix;
 276        uchar flag;
 277        uchar cdb_len;
 278        uchar tag_code;
 279        ushort vm_id;
 280} ASC_SCSIQ_2;
 281
 282typedef struct asc_scsiq_3 {
 283        uchar done_stat;
 284        uchar host_stat;
 285        uchar scsi_stat;
 286        uchar scsi_msg;
 287} ASC_SCSIQ_3;
 288
 289typedef struct asc_scsiq_4 {
 290        uchar cdb[ASC_MAX_CDB_LEN];
 291        uchar y_first_sg_list_qp;
 292        uchar y_working_sg_qp;
 293        uchar y_working_sg_ix;
 294        uchar y_res;
 295        ushort x_req_count;
 296        ushort x_reconnect_rtn;
 297        __le32 x_saved_data_addr;
 298        __le32 x_saved_data_cnt;
 299} ASC_SCSIQ_4;
 300
 301typedef struct asc_q_done_info {
 302        ASC_SCSIQ_2 d2;
 303        ASC_SCSIQ_3 d3;
 304        uchar q_status;
 305        uchar q_no;
 306        uchar cntl;
 307        uchar sense_len;
 308        uchar extra_bytes;
 309        uchar res;
 310        u32 remain_bytes;
 311} ASC_QDONE_INFO;
 312
 313typedef struct asc_sg_list {
 314        __le32 addr;
 315        __le32 bytes;
 316} ASC_SG_LIST;
 317
 318typedef struct asc_sg_head {
 319        ushort entry_cnt;
 320        ushort queue_cnt;
 321        ushort entry_to_copy;
 322        ushort res;
 323        ASC_SG_LIST sg_list[0];
 324} ASC_SG_HEAD;
 325
 326typedef struct asc_scsi_q {
 327        ASC_SCSIQ_1 q1;
 328        ASC_SCSIQ_2 q2;
 329        uchar *cdbptr;
 330        ASC_SG_HEAD *sg_head;
 331        ushort remain_sg_entry_cnt;
 332        ushort next_sg_index;
 333} ASC_SCSI_Q;
 334
 335typedef struct asc_scsi_bios_req_q {
 336        ASC_SCSIQ_1 r1;
 337        ASC_SCSIQ_2 r2;
 338        uchar *cdbptr;
 339        ASC_SG_HEAD *sg_head;
 340        uchar *sense_ptr;
 341        ASC_SCSIQ_3 r3;
 342        uchar cdb[ASC_MAX_CDB_LEN];
 343        uchar sense[ASC_MIN_SENSE_LEN];
 344} ASC_SCSI_BIOS_REQ_Q;
 345
 346typedef struct asc_risc_q {
 347        uchar fwd;
 348        uchar bwd;
 349        ASC_SCSIQ_1 i1;
 350        ASC_SCSIQ_2 i2;
 351        ASC_SCSIQ_3 i3;
 352        ASC_SCSIQ_4 i4;
 353} ASC_RISC_Q;
 354
 355typedef struct asc_sg_list_q {
 356        uchar seq_no;
 357        uchar q_no;
 358        uchar cntl;
 359        uchar sg_head_qp;
 360        uchar sg_list_cnt;
 361        uchar sg_cur_list_cnt;
 362} ASC_SG_LIST_Q;
 363
 364typedef struct asc_risc_sg_list_q {
 365        uchar fwd;
 366        uchar bwd;
 367        ASC_SG_LIST_Q sg;
 368        ASC_SG_LIST sg_list[7];
 369} ASC_RISC_SG_LIST_Q;
 370
 371#define ASCQ_ERR_Q_STATUS             0x0D
 372#define ASCQ_ERR_CUR_QNG              0x17
 373#define ASCQ_ERR_SG_Q_LINKS           0x18
 374#define ASCQ_ERR_ISR_RE_ENTRY         0x1A
 375#define ASCQ_ERR_CRITICAL_RE_ENTRY    0x1B
 376#define ASCQ_ERR_ISR_ON_CRITICAL      0x1C
 377
 378/*
 379 * Warning code values are set in ASC_DVC_VAR  'warn_code'.
 380 */
 381#define ASC_WARN_NO_ERROR             0x0000
 382#define ASC_WARN_IO_PORT_ROTATE       0x0001
 383#define ASC_WARN_EEPROM_CHKSUM        0x0002
 384#define ASC_WARN_IRQ_MODIFIED         0x0004
 385#define ASC_WARN_AUTO_CONFIG          0x0008
 386#define ASC_WARN_CMD_QNG_CONFLICT     0x0010
 387#define ASC_WARN_EEPROM_RECOVER       0x0020
 388#define ASC_WARN_CFG_MSW_RECOVER      0x0040
 389
 390/*
 391 * Error code values are set in {ASC/ADV}_DVC_VAR  'err_code'.
 392 */
 393#define ASC_IERR_NO_CARRIER             0x0001  /* No more carrier memory */
 394#define ASC_IERR_MCODE_CHKSUM           0x0002  /* micro code check sum error */
 395#define ASC_IERR_SET_PC_ADDR            0x0004
 396#define ASC_IERR_START_STOP_CHIP        0x0008  /* start/stop chip failed */
 397#define ASC_IERR_ILLEGAL_CONNECTION     0x0010  /* Illegal cable connection */
 398#define ASC_IERR_SINGLE_END_DEVICE      0x0020  /* SE device on DIFF bus */
 399#define ASC_IERR_REVERSED_CABLE         0x0040  /* Narrow flat cable reversed */
 400#define ASC_IERR_SET_SCSI_ID            0x0080  /* set SCSI ID failed */
 401#define ASC_IERR_HVD_DEVICE             0x0100  /* HVD device on LVD port */
 402#define ASC_IERR_BAD_SIGNATURE          0x0200  /* signature not found */
 403#define ASC_IERR_NO_BUS_TYPE            0x0400
 404#define ASC_IERR_BIST_PRE_TEST          0x0800  /* BIST pre-test error */
 405#define ASC_IERR_BIST_RAM_TEST          0x1000  /* BIST RAM test error */
 406#define ASC_IERR_BAD_CHIPTYPE           0x2000  /* Invalid chip_type setting */
 407
 408#define ASC_DEF_MAX_TOTAL_QNG   (0xF0)
 409#define ASC_MIN_TAG_Q_PER_DVC   (0x04)
 410#define ASC_MIN_FREE_Q        (0x02)
 411#define ASC_MIN_TOTAL_QNG     ((ASC_MAX_SG_QUEUE)+(ASC_MIN_FREE_Q))
 412#define ASC_MAX_TOTAL_QNG 240
 413#define ASC_MAX_PCI_ULTRA_INRAM_TOTAL_QNG 16
 414#define ASC_MAX_PCI_ULTRA_INRAM_TAG_QNG   8
 415#define ASC_MAX_PCI_INRAM_TOTAL_QNG  20
 416#define ASC_MAX_INRAM_TAG_QNG   16
 417#define ASC_IOADR_GAP   0x10
 418#define ASC_SYN_MAX_OFFSET         0x0F
 419#define ASC_DEF_SDTR_OFFSET        0x0F
 420#define ASC_SDTR_ULTRA_PCI_10MB_INDEX  0x02
 421#define ASYN_SDTR_DATA_FIX_PCI_REV_AB 0x41
 422
 423/* The narrow chip only supports a limited selection of transfer rates.
 424 * These are encoded in the range 0..7 or 0..15 depending whether the chip
 425 * is Ultra-capable or not.  These tables let us convert from one to the other.
 426 */
 427static const unsigned char asc_syn_xfer_period[8] = {
 428        25, 30, 35, 40, 50, 60, 70, 85
 429};
 430
 431static const unsigned char asc_syn_ultra_xfer_period[16] = {
 432        12, 19, 25, 32, 38, 44, 50, 57, 63, 69, 75, 82, 88, 94, 100, 107
 433};
 434
 435typedef struct ext_msg {
 436        uchar msg_type;
 437        uchar msg_len;
 438        uchar msg_req;
 439        union {
 440                struct {
 441                        uchar sdtr_xfer_period;
 442                        uchar sdtr_req_ack_offset;
 443                } sdtr;
 444                struct {
 445                        uchar wdtr_width;
 446                } wdtr;
 447                struct {
 448                        uchar mdp_b3;
 449                        uchar mdp_b2;
 450                        uchar mdp_b1;
 451                        uchar mdp_b0;
 452                } mdp;
 453        } u_ext_msg;
 454        uchar res;
 455} EXT_MSG;
 456
 457#define xfer_period     u_ext_msg.sdtr.sdtr_xfer_period
 458#define req_ack_offset  u_ext_msg.sdtr.sdtr_req_ack_offset
 459#define wdtr_width      u_ext_msg.wdtr.wdtr_width
 460#define mdp_b3          u_ext_msg.mdp_b3
 461#define mdp_b2          u_ext_msg.mdp_b2
 462#define mdp_b1          u_ext_msg.mdp_b1
 463#define mdp_b0          u_ext_msg.mdp_b0
 464
 465typedef struct asc_dvc_cfg {
 466        ASC_SCSI_BIT_ID_TYPE can_tagged_qng;
 467        ASC_SCSI_BIT_ID_TYPE cmd_qng_enabled;
 468        ASC_SCSI_BIT_ID_TYPE disc_enable;
 469        ASC_SCSI_BIT_ID_TYPE sdtr_enable;
 470        uchar chip_scsi_id;
 471        uchar isa_dma_speed;
 472        uchar isa_dma_channel;
 473        uchar chip_version;
 474        ushort mcode_date;
 475        ushort mcode_version;
 476        uchar max_tag_qng[ASC_MAX_TID + 1];
 477        uchar sdtr_period_offset[ASC_MAX_TID + 1];
 478        uchar adapter_info[6];
 479} ASC_DVC_CFG;
 480
 481#define ASC_DEF_DVC_CNTL       0xFFFF
 482#define ASC_DEF_CHIP_SCSI_ID   7
 483#define ASC_DEF_ISA_DMA_SPEED  4
 484#define ASC_INIT_STATE_BEG_GET_CFG   0x0001
 485#define ASC_INIT_STATE_END_GET_CFG   0x0002
 486#define ASC_INIT_STATE_BEG_SET_CFG   0x0004
 487#define ASC_INIT_STATE_END_SET_CFG   0x0008
 488#define ASC_INIT_STATE_BEG_LOAD_MC   0x0010
 489#define ASC_INIT_STATE_END_LOAD_MC   0x0020
 490#define ASC_INIT_STATE_BEG_INQUIRY   0x0040
 491#define ASC_INIT_STATE_END_INQUIRY   0x0080
 492#define ASC_INIT_RESET_SCSI_DONE     0x0100
 493#define ASC_INIT_STATE_WITHOUT_EEP   0x8000
 494#define ASC_BUG_FIX_IF_NOT_DWB       0x0001
 495#define ASC_BUG_FIX_ASYN_USE_SYN     0x0002
 496#define ASC_MIN_TAGGED_CMD  7
 497#define ASC_MAX_SCSI_RESET_WAIT      30
 498#define ASC_OVERRUN_BSIZE               64
 499
 500struct asc_dvc_var;             /* Forward Declaration. */
 501
 502typedef struct asc_dvc_var {
 503        PortAddr iop_base;
 504        ushort err_code;
 505        ushort dvc_cntl;
 506        ushort bug_fix_cntl;
 507        ushort bus_type;
 508        ASC_SCSI_BIT_ID_TYPE init_sdtr;
 509        ASC_SCSI_BIT_ID_TYPE sdtr_done;
 510        ASC_SCSI_BIT_ID_TYPE use_tagged_qng;
 511        ASC_SCSI_BIT_ID_TYPE unit_not_ready;
 512        ASC_SCSI_BIT_ID_TYPE queue_full_or_busy;
 513        ASC_SCSI_BIT_ID_TYPE start_motor;
 514        uchar *overrun_buf;
 515        dma_addr_t overrun_dma;
 516        uchar scsi_reset_wait;
 517        uchar chip_no;
 518        bool is_in_int;
 519        uchar max_total_qng;
 520        uchar cur_total_qng;
 521        uchar in_critical_cnt;
 522        uchar last_q_shortage;
 523        ushort init_state;
 524        uchar cur_dvc_qng[ASC_MAX_TID + 1];
 525        uchar max_dvc_qng[ASC_MAX_TID + 1];
 526        ASC_SCSI_Q *scsiq_busy_head[ASC_MAX_TID + 1];
 527        ASC_SCSI_Q *scsiq_busy_tail[ASC_MAX_TID + 1];
 528        const uchar *sdtr_period_tbl;
 529        ASC_DVC_CFG *cfg;
 530        ASC_SCSI_BIT_ID_TYPE pci_fix_asyn_xfer_always;
 531        char redo_scam;
 532        ushort res2;
 533        uchar dos_int13_table[ASC_MAX_TID + 1];
 534        unsigned int max_dma_count;
 535        ASC_SCSI_BIT_ID_TYPE no_scam;
 536        ASC_SCSI_BIT_ID_TYPE pci_fix_asyn_xfer;
 537        uchar min_sdtr_index;
 538        uchar max_sdtr_index;
 539        struct asc_board *drv_ptr;
 540        unsigned int uc_break;
 541} ASC_DVC_VAR;
 542
 543typedef struct asc_dvc_inq_info {
 544        uchar type[ASC_MAX_TID + 1][ASC_MAX_LUN + 1];
 545} ASC_DVC_INQ_INFO;
 546
 547typedef struct asc_cap_info {
 548        u32 lba;
 549        u32 blk_size;
 550} ASC_CAP_INFO;
 551
 552typedef struct asc_cap_info_array {
 553        ASC_CAP_INFO cap_info[ASC_MAX_TID + 1][ASC_MAX_LUN + 1];
 554} ASC_CAP_INFO_ARRAY;
 555
 556#define ASC_MCNTL_NO_SEL_TIMEOUT  (ushort)0x0001
 557#define ASC_MCNTL_NULL_TARGET     (ushort)0x0002
 558#define ASC_CNTL_INITIATOR         (ushort)0x0001
 559#define ASC_CNTL_BIOS_GT_1GB       (ushort)0x0002
 560#define ASC_CNTL_BIOS_GT_2_DISK    (ushort)0x0004
 561#define ASC_CNTL_BIOS_REMOVABLE    (ushort)0x0008
 562#define ASC_CNTL_NO_SCAM           (ushort)0x0010
 563#define ASC_CNTL_INT_MULTI_Q       (ushort)0x0080
 564#define ASC_CNTL_NO_LUN_SUPPORT    (ushort)0x0040
 565#define ASC_CNTL_NO_VERIFY_COPY    (ushort)0x0100
 566#define ASC_CNTL_RESET_SCSI        (ushort)0x0200
 567#define ASC_CNTL_INIT_INQUIRY      (ushort)0x0400
 568#define ASC_CNTL_INIT_VERBOSE      (ushort)0x0800
 569#define ASC_CNTL_SCSI_PARITY       (ushort)0x1000
 570#define ASC_CNTL_BURST_MODE        (ushort)0x2000
 571#define ASC_CNTL_SDTR_ENABLE_ULTRA (ushort)0x4000
 572#define ASC_EEP_DVC_CFG_BEG_VL    2
 573#define ASC_EEP_MAX_DVC_ADDR_VL   15
 574#define ASC_EEP_DVC_CFG_BEG      32
 575#define ASC_EEP_MAX_DVC_ADDR     45
 576#define ASC_EEP_MAX_RETRY        20
 577
 578/*
 579 * These macros keep the chip SCSI id and ISA DMA speed
 580 * bitfields in board order. C bitfields aren't portable
 581 * between big and little-endian platforms so they are
 582 * not used.
 583 */
 584
 585#define ASC_EEP_GET_CHIP_ID(cfg)    ((cfg)->id_speed & 0x0f)
 586#define ASC_EEP_GET_DMA_SPD(cfg)    (((cfg)->id_speed & 0xf0) >> 4)
 587#define ASC_EEP_SET_CHIP_ID(cfg, sid) \
 588   ((cfg)->id_speed = ((cfg)->id_speed & 0xf0) | ((sid) & ASC_MAX_TID))
 589#define ASC_EEP_SET_DMA_SPD(cfg, spd) \
 590   ((cfg)->id_speed = ((cfg)->id_speed & 0x0f) | ((spd) & 0x0f) << 4)
 591
 592typedef struct asceep_config {
 593        ushort cfg_lsw;
 594        ushort cfg_msw;
 595        uchar init_sdtr;
 596        uchar disc_enable;
 597        uchar use_cmd_qng;
 598        uchar start_motor;
 599        uchar max_total_qng;
 600        uchar max_tag_qng;
 601        uchar bios_scan;
 602        uchar power_up_wait;
 603        uchar no_scam;
 604        uchar id_speed;         /* low order 4 bits is chip scsi id */
 605        /* high order 4 bits is isa dma speed */
 606        uchar dos_int13_table[ASC_MAX_TID + 1];
 607        uchar adapter_info[6];
 608        ushort cntl;
 609        ushort chksum;
 610} ASCEEP_CONFIG;
 611
 612#define ASC_EEP_CMD_READ          0x80
 613#define ASC_EEP_CMD_WRITE         0x40
 614#define ASC_EEP_CMD_WRITE_ABLE    0x30
 615#define ASC_EEP_CMD_WRITE_DISABLE 0x00
 616#define ASCV_MSGOUT_BEG         0x0000
 617#define ASCV_MSGOUT_SDTR_PERIOD (ASCV_MSGOUT_BEG+3)
 618#define ASCV_MSGOUT_SDTR_OFFSET (ASCV_MSGOUT_BEG+4)
 619#define ASCV_BREAK_SAVED_CODE   (ushort)0x0006
 620#define ASCV_MSGIN_BEG          (ASCV_MSGOUT_BEG+8)
 621#define ASCV_MSGIN_SDTR_PERIOD  (ASCV_MSGIN_BEG+3)
 622#define ASCV_MSGIN_SDTR_OFFSET  (ASCV_MSGIN_BEG+4)
 623#define ASCV_SDTR_DATA_BEG      (ASCV_MSGIN_BEG+8)
 624#define ASCV_SDTR_DONE_BEG      (ASCV_SDTR_DATA_BEG+8)
 625#define ASCV_MAX_DVC_QNG_BEG    (ushort)0x0020
 626#define ASCV_BREAK_ADDR           (ushort)0x0028
 627#define ASCV_BREAK_NOTIFY_COUNT   (ushort)0x002A
 628#define ASCV_BREAK_CONTROL        (ushort)0x002C
 629#define ASCV_BREAK_HIT_COUNT      (ushort)0x002E
 630
 631#define ASCV_ASCDVC_ERR_CODE_W  (ushort)0x0030
 632#define ASCV_MCODE_CHKSUM_W   (ushort)0x0032
 633#define ASCV_MCODE_SIZE_W     (ushort)0x0034
 634#define ASCV_STOP_CODE_B      (ushort)0x0036
 635#define ASCV_DVC_ERR_CODE_B   (ushort)0x0037
 636#define ASCV_OVERRUN_PADDR_D  (ushort)0x0038
 637#define ASCV_OVERRUN_BSIZE_D  (ushort)0x003C
 638#define ASCV_HALTCODE_W       (ushort)0x0040
 639#define ASCV_CHKSUM_W         (ushort)0x0042
 640#define ASCV_MC_DATE_W        (ushort)0x0044
 641#define ASCV_MC_VER_W         (ushort)0x0046
 642#define ASCV_NEXTRDY_B        (ushort)0x0048
 643#define ASCV_DONENEXT_B       (ushort)0x0049
 644#define ASCV_USE_TAGGED_QNG_B (ushort)0x004A
 645#define ASCV_SCSIBUSY_B       (ushort)0x004B
 646#define ASCV_Q_DONE_IN_PROGRESS_B  (ushort)0x004C
 647#define ASCV_CURCDB_B         (ushort)0x004D
 648#define ASCV_RCLUN_B          (ushort)0x004E
 649#define ASCV_BUSY_QHEAD_B     (ushort)0x004F
 650#define ASCV_DISC1_QHEAD_B    (ushort)0x0050
 651#define ASCV_DISC_ENABLE_B    (ushort)0x0052
 652#define ASCV_CAN_TAGGED_QNG_B (ushort)0x0053
 653#define ASCV_HOSTSCSI_ID_B    (ushort)0x0055
 654#define ASCV_MCODE_CNTL_B     (ushort)0x0056
 655#define ASCV_NULL_TARGET_B    (ushort)0x0057
 656#define ASCV_FREE_Q_HEAD_W    (ushort)0x0058
 657#define ASCV_DONE_Q_TAIL_W    (ushort)0x005A
 658#define ASCV_FREE_Q_HEAD_B    (ushort)(ASCV_FREE_Q_HEAD_W+1)
 659#define ASCV_DONE_Q_TAIL_B    (ushort)(ASCV_DONE_Q_TAIL_W+1)
 660#define ASCV_HOST_FLAG_B      (ushort)0x005D
 661#define ASCV_TOTAL_READY_Q_B  (ushort)0x0064
 662#define ASCV_VER_SERIAL_B     (ushort)0x0065
 663#define ASCV_HALTCODE_SAVED_W (ushort)0x0066
 664#define ASCV_WTM_FLAG_B       (ushort)0x0068
 665#define ASCV_RISC_FLAG_B      (ushort)0x006A
 666#define ASCV_REQ_SG_LIST_QP   (ushort)0x006B
 667#define ASC_HOST_FLAG_IN_ISR        0x01
 668#define ASC_HOST_FLAG_ACK_INT       0x02
 669#define ASC_RISC_FLAG_GEN_INT      0x01
 670#define ASC_RISC_FLAG_REQ_SG_LIST  0x02
 671#define IOP_CTRL         (0x0F)
 672#define IOP_STATUS       (0x0E)
 673#define IOP_INT_ACK      IOP_STATUS
 674#define IOP_REG_IFC      (0x0D)
 675#define IOP_SYN_OFFSET    (0x0B)
 676#define IOP_EXTRA_CONTROL (0x0D)
 677#define IOP_REG_PC        (0x0C)
 678#define IOP_RAM_ADDR      (0x0A)
 679#define IOP_RAM_DATA      (0x08)
 680#define IOP_EEP_DATA      (0x06)
 681#define IOP_EEP_CMD       (0x07)
 682#define IOP_VERSION       (0x03)
 683#define IOP_CONFIG_HIGH   (0x04)
 684#define IOP_CONFIG_LOW    (0x02)
 685#define IOP_SIG_BYTE      (0x01)
 686#define IOP_SIG_WORD      (0x00)
 687#define IOP_REG_DC1      (0x0E)
 688#define IOP_REG_DC0      (0x0C)
 689#define IOP_REG_SB       (0x0B)
 690#define IOP_REG_DA1      (0x0A)
 691#define IOP_REG_DA0      (0x08)
 692#define IOP_REG_SC       (0x09)
 693#define IOP_DMA_SPEED    (0x07)
 694#define IOP_REG_FLAG     (0x07)
 695#define IOP_FIFO_H       (0x06)
 696#define IOP_FIFO_L       (0x04)
 697#define IOP_REG_ID       (0x05)
 698#define IOP_REG_QP       (0x03)
 699#define IOP_REG_IH       (0x02)
 700#define IOP_REG_IX       (0x01)
 701#define IOP_REG_AX       (0x00)
 702#define IFC_REG_LOCK      (0x00)
 703#define IFC_REG_UNLOCK    (0x09)
 704#define IFC_WR_EN_FILTER  (0x10)
 705#define IFC_RD_NO_EEPROM  (0x10)
 706#define IFC_SLEW_RATE     (0x20)
 707#define IFC_ACT_NEG       (0x40)
 708#define IFC_INP_FILTER    (0x80)
 709#define IFC_INIT_DEFAULT  (IFC_ACT_NEG | IFC_REG_UNLOCK)
 710#define SC_SEL   (uchar)(0x80)
 711#define SC_BSY   (uchar)(0x40)
 712#define SC_ACK   (uchar)(0x20)
 713#define SC_REQ   (uchar)(0x10)
 714#define SC_ATN   (uchar)(0x08)
 715#define SC_IO    (uchar)(0x04)
 716#define SC_CD    (uchar)(0x02)
 717#define SC_MSG   (uchar)(0x01)
 718#define SEC_SCSI_CTL         (uchar)(0x80)
 719#define SEC_ACTIVE_NEGATE    (uchar)(0x40)
 720#define SEC_SLEW_RATE        (uchar)(0x20)
 721#define SEC_ENABLE_FILTER    (uchar)(0x10)
 722#define ASC_HALT_EXTMSG_IN     (ushort)0x8000
 723#define ASC_HALT_CHK_CONDITION (ushort)0x8100
 724#define ASC_HALT_SS_QUEUE_FULL (ushort)0x8200
 725#define ASC_HALT_DISABLE_ASYN_USE_SYN_FIX  (ushort)0x8300
 726#define ASC_HALT_ENABLE_ASYN_USE_SYN_FIX   (ushort)0x8400
 727#define ASC_HALT_SDTR_REJECTED (ushort)0x4000
 728#define ASC_HALT_HOST_COPY_SG_LIST_TO_RISC ( ushort )0x2000
 729#define ASC_MAX_QNO        0xF8
 730#define ASC_DATA_SEC_BEG   (ushort)0x0080
 731#define ASC_DATA_SEC_END   (ushort)0x0080
 732#define ASC_CODE_SEC_BEG   (ushort)0x0080
 733#define ASC_CODE_SEC_END   (ushort)0x0080
 734#define ASC_QADR_BEG       (0x4000)
 735#define ASC_QADR_USED      (ushort)(ASC_MAX_QNO * 64)
 736#define ASC_QADR_END       (ushort)0x7FFF
 737#define ASC_QLAST_ADR      (ushort)0x7FC0
 738#define ASC_QBLK_SIZE      0x40
 739#define ASC_BIOS_DATA_QBEG 0xF8
 740#define ASC_MIN_ACTIVE_QNO 0x01
 741#define ASC_QLINK_END      0xFF
 742#define ASC_EEPROM_WORDS   0x10
 743#define ASC_MAX_MGS_LEN    0x10
 744#define ASC_BIOS_ADDR_DEF  0xDC00
 745#define ASC_BIOS_SIZE      0x3800
 746#define ASC_BIOS_RAM_OFF   0x3800
 747#define ASC_BIOS_RAM_SIZE  0x800
 748#define ASC_BIOS_MIN_ADDR  0xC000
 749#define ASC_BIOS_MAX_ADDR  0xEC00
 750#define ASC_BIOS_BANK_SIZE 0x0400
 751#define ASC_MCODE_START_ADDR  0x0080
 752#define ASC_CFG0_HOST_INT_ON    0x0020
 753#define ASC_CFG0_BIOS_ON        0x0040
 754#define ASC_CFG0_VERA_BURST_ON  0x0080
 755#define ASC_CFG0_SCSI_PARITY_ON 0x0800
 756#define ASC_CFG1_SCSI_TARGET_ON 0x0080
 757#define ASC_CFG1_LRAM_8BITS_ON  0x0800
 758#define ASC_CFG_MSW_CLR_MASK    0x3080
 759#define CSW_TEST1             (ASC_CS_TYPE)0x8000
 760#define CSW_AUTO_CONFIG       (ASC_CS_TYPE)0x4000
 761#define CSW_RESERVED1         (ASC_CS_TYPE)0x2000
 762#define CSW_IRQ_WRITTEN       (ASC_CS_TYPE)0x1000
 763#define CSW_33MHZ_SELECTED    (ASC_CS_TYPE)0x0800
 764#define CSW_TEST2             (ASC_CS_TYPE)0x0400
 765#define CSW_TEST3             (ASC_CS_TYPE)0x0200
 766#define CSW_RESERVED2         (ASC_CS_TYPE)0x0100
 767#define CSW_DMA_DONE          (ASC_CS_TYPE)0x0080
 768#define CSW_FIFO_RDY          (ASC_CS_TYPE)0x0040
 769#define CSW_EEP_READ_DONE     (ASC_CS_TYPE)0x0020
 770#define CSW_HALTED            (ASC_CS_TYPE)0x0010
 771#define CSW_SCSI_RESET_ACTIVE (ASC_CS_TYPE)0x0008
 772#define CSW_PARITY_ERR        (ASC_CS_TYPE)0x0004
 773#define CSW_SCSI_RESET_LATCH  (ASC_CS_TYPE)0x0002
 774#define CSW_INT_PENDING       (ASC_CS_TYPE)0x0001
 775#define CIW_CLR_SCSI_RESET_INT (ASC_CS_TYPE)0x1000
 776#define CIW_INT_ACK      (ASC_CS_TYPE)0x0100
 777#define CIW_TEST1        (ASC_CS_TYPE)0x0200
 778#define CIW_TEST2        (ASC_CS_TYPE)0x0400
 779#define CIW_SEL_33MHZ    (ASC_CS_TYPE)0x0800
 780#define CIW_IRQ_ACT      (ASC_CS_TYPE)0x1000
 781#define CC_CHIP_RESET   (uchar)0x80
 782#define CC_SCSI_RESET   (uchar)0x40
 783#define CC_HALT         (uchar)0x20
 784#define CC_SINGLE_STEP  (uchar)0x10
 785#define CC_DMA_ABLE     (uchar)0x08
 786#define CC_TEST         (uchar)0x04
 787#define CC_BANK_ONE     (uchar)0x02
 788#define CC_DIAG         (uchar)0x01
 789#define ASC_1000_ID0W      0x04C1
 790#define ASC_1000_ID0W_FIX  0x00C1
 791#define ASC_1000_ID1B      0x25
 792#define ASC_EISA_REV_IOP_MASK  (0x0C83)
 793#define ASC_EISA_CFG_IOP_MASK  (0x0C86)
 794#define ASC_GET_EISA_SLOT(iop)  (PortAddr)((iop) & 0xF000)
 795#define INS_HALTINT        (ushort)0x6281
 796#define INS_HALT           (ushort)0x6280
 797#define INS_SINT           (ushort)0x6200
 798#define INS_RFLAG_WTM      (ushort)0x7380
 799#define ASC_MC_SAVE_CODE_WSIZE  0x500
 800#define ASC_MC_SAVE_DATA_WSIZE  0x40
 801
 802typedef struct asc_mc_saved {
 803        ushort data[ASC_MC_SAVE_DATA_WSIZE];
 804        ushort code[ASC_MC_SAVE_CODE_WSIZE];
 805} ASC_MC_SAVED;
 806
 807#define AscGetQDoneInProgress(port)         AscReadLramByte((port), ASCV_Q_DONE_IN_PROGRESS_B)
 808#define AscPutQDoneInProgress(port, val)    AscWriteLramByte((port), ASCV_Q_DONE_IN_PROGRESS_B, val)
 809#define AscGetVarFreeQHead(port)            AscReadLramWord((port), ASCV_FREE_Q_HEAD_W)
 810#define AscGetVarDoneQTail(port)            AscReadLramWord((port), ASCV_DONE_Q_TAIL_W)
 811#define AscPutVarFreeQHead(port, val)       AscWriteLramWord((port), ASCV_FREE_Q_HEAD_W, val)
 812#define AscPutVarDoneQTail(port, val)       AscWriteLramWord((port), ASCV_DONE_Q_TAIL_W, val)
 813#define AscGetRiscVarFreeQHead(port)        AscReadLramByte((port), ASCV_NEXTRDY_B)
 814#define AscGetRiscVarDoneQTail(port)        AscReadLramByte((port), ASCV_DONENEXT_B)
 815#define AscPutRiscVarFreeQHead(port, val)   AscWriteLramByte((port), ASCV_NEXTRDY_B, val)
 816#define AscPutRiscVarDoneQTail(port, val)   AscWriteLramByte((port), ASCV_DONENEXT_B, val)
 817#define AscPutMCodeSDTRDoneAtID(port, id, data)  AscWriteLramByte((port), (ushort)((ushort)ASCV_SDTR_DONE_BEG+(ushort)id), (data))
 818#define AscGetMCodeSDTRDoneAtID(port, id)        AscReadLramByte((port), (ushort)((ushort)ASCV_SDTR_DONE_BEG+(ushort)id))
 819#define AscPutMCodeInitSDTRAtID(port, id, data)  AscWriteLramByte((port), (ushort)((ushort)ASCV_SDTR_DATA_BEG+(ushort)id), data)
 820#define AscGetMCodeInitSDTRAtID(port, id)        AscReadLramByte((port), (ushort)((ushort)ASCV_SDTR_DATA_BEG+(ushort)id))
 821#define AscGetChipSignatureByte(port)     (uchar)inp((port)+IOP_SIG_BYTE)
 822#define AscGetChipSignatureWord(port)     (ushort)inpw((port)+IOP_SIG_WORD)
 823#define AscGetChipVerNo(port)             (uchar)inp((port)+IOP_VERSION)
 824#define AscGetChipCfgLsw(port)            (ushort)inpw((port)+IOP_CONFIG_LOW)
 825#define AscGetChipCfgMsw(port)            (ushort)inpw((port)+IOP_CONFIG_HIGH)
 826#define AscSetChipCfgLsw(port, data)      outpw((port)+IOP_CONFIG_LOW, data)
 827#define AscSetChipCfgMsw(port, data)      outpw((port)+IOP_CONFIG_HIGH, data)
 828#define AscGetChipEEPCmd(port)            (uchar)inp((port)+IOP_EEP_CMD)
 829#define AscSetChipEEPCmd(port, data)      outp((port)+IOP_EEP_CMD, data)
 830#define AscGetChipEEPData(port)           (ushort)inpw((port)+IOP_EEP_DATA)
 831#define AscSetChipEEPData(port, data)     outpw((port)+IOP_EEP_DATA, data)
 832#define AscGetChipLramAddr(port)          (ushort)inpw((PortAddr)((port)+IOP_RAM_ADDR))
 833#define AscSetChipLramAddr(port, addr)    outpw((PortAddr)((port)+IOP_RAM_ADDR), addr)
 834#define AscGetChipLramData(port)          (ushort)inpw((port)+IOP_RAM_DATA)
 835#define AscSetChipLramData(port, data)    outpw((port)+IOP_RAM_DATA, data)
 836#define AscGetChipIFC(port)               (uchar)inp((port)+IOP_REG_IFC)
 837#define AscSetChipIFC(port, data)          outp((port)+IOP_REG_IFC, data)
 838#define AscGetChipStatus(port)            (ASC_CS_TYPE)inpw((port)+IOP_STATUS)
 839#define AscSetChipStatus(port, cs_val)    outpw((port)+IOP_STATUS, cs_val)
 840#define AscGetChipControl(port)           (uchar)inp((port)+IOP_CTRL)
 841#define AscSetChipControl(port, cc_val)   outp((port)+IOP_CTRL, cc_val)
 842#define AscGetChipSyn(port)               (uchar)inp((port)+IOP_SYN_OFFSET)
 843#define AscSetChipSyn(port, data)         outp((port)+IOP_SYN_OFFSET, data)
 844#define AscSetPCAddr(port, data)          outpw((port)+IOP_REG_PC, data)
 845#define AscGetPCAddr(port)                (ushort)inpw((port)+IOP_REG_PC)
 846#define AscIsIntPending(port)             (AscGetChipStatus(port) & (CSW_INT_PENDING | CSW_SCSI_RESET_LATCH))
 847#define AscGetChipScsiID(port)            ((AscGetChipCfgLsw(port) >> 8) & ASC_MAX_TID)
 848#define AscGetExtraControl(port)          (uchar)inp((port)+IOP_EXTRA_CONTROL)
 849#define AscSetExtraControl(port, data)    outp((port)+IOP_EXTRA_CONTROL, data)
 850#define AscReadChipAX(port)               (ushort)inpw((port)+IOP_REG_AX)
 851#define AscWriteChipAX(port, data)        outpw((port)+IOP_REG_AX, data)
 852#define AscReadChipIX(port)               (uchar)inp((port)+IOP_REG_IX)
 853#define AscWriteChipIX(port, data)        outp((port)+IOP_REG_IX, data)
 854#define AscReadChipIH(port)               (ushort)inpw((port)+IOP_REG_IH)
 855#define AscWriteChipIH(port, data)        outpw((port)+IOP_REG_IH, data)
 856#define AscReadChipQP(port)               (uchar)inp((port)+IOP_REG_QP)
 857#define AscWriteChipQP(port, data)        outp((port)+IOP_REG_QP, data)
 858#define AscReadChipFIFO_L(port)           (ushort)inpw((port)+IOP_REG_FIFO_L)
 859#define AscWriteChipFIFO_L(port, data)    outpw((port)+IOP_REG_FIFO_L, data)
 860#define AscReadChipFIFO_H(port)           (ushort)inpw((port)+IOP_REG_FIFO_H)
 861#define AscWriteChipFIFO_H(port, data)    outpw((port)+IOP_REG_FIFO_H, data)
 862#define AscReadChipDmaSpeed(port)         (uchar)inp((port)+IOP_DMA_SPEED)
 863#define AscWriteChipDmaSpeed(port, data)  outp((port)+IOP_DMA_SPEED, data)
 864#define AscReadChipDA0(port)              (ushort)inpw((port)+IOP_REG_DA0)
 865#define AscWriteChipDA0(port)             outpw((port)+IOP_REG_DA0, data)
 866#define AscReadChipDA1(port)              (ushort)inpw((port)+IOP_REG_DA1)
 867#define AscWriteChipDA1(port)             outpw((port)+IOP_REG_DA1, data)
 868#define AscReadChipDC0(port)              (ushort)inpw((port)+IOP_REG_DC0)
 869#define AscWriteChipDC0(port)             outpw((port)+IOP_REG_DC0, data)
 870#define AscReadChipDC1(port)              (ushort)inpw((port)+IOP_REG_DC1)
 871#define AscWriteChipDC1(port)             outpw((port)+IOP_REG_DC1, data)
 872#define AscReadChipDvcID(port)            (uchar)inp((port)+IOP_REG_ID)
 873#define AscWriteChipDvcID(port, data)     outp((port)+IOP_REG_ID, data)
 874
 875#define AdvPortAddr  void __iomem *     /* Virtual memory address size */
 876
 877/*
 878 * Define Adv Library required memory access macros.
 879 */
 880#define ADV_MEM_READB(addr) readb(addr)
 881#define ADV_MEM_READW(addr) readw(addr)
 882#define ADV_MEM_WRITEB(addr, byte) writeb(byte, addr)
 883#define ADV_MEM_WRITEW(addr, word) writew(word, addr)
 884#define ADV_MEM_WRITEDW(addr, dword) writel(dword, addr)
 885
 886/*
 887 * Define total number of simultaneous maximum element scatter-gather
 888 * request blocks per wide adapter. ASC_DEF_MAX_HOST_QNG (253) is the
 889 * maximum number of outstanding commands per wide host adapter. Each
 890 * command uses one or more ADV_SG_BLOCK each with 15 scatter-gather
 891 * elements. Allow each command to have at least one ADV_SG_BLOCK structure.
 892 * This allows about 15 commands to have the maximum 17 ADV_SG_BLOCK
 893 * structures or 255 scatter-gather elements.
 894 */
 895#define ADV_TOT_SG_BLOCK        ASC_DEF_MAX_HOST_QNG
 896
 897/*
 898 * Define maximum number of scatter-gather elements per request.
 899 */
 900#define ADV_MAX_SG_LIST         255
 901#define NO_OF_SG_PER_BLOCK              15
 902
 903#define ADV_EEP_DVC_CFG_BEGIN           (0x00)
 904#define ADV_EEP_DVC_CFG_END             (0x15)
 905#define ADV_EEP_DVC_CTL_BEGIN           (0x16)  /* location of OEM name */
 906#define ADV_EEP_MAX_WORD_ADDR           (0x1E)
 907
 908#define ADV_EEP_DELAY_MS                100
 909
 910#define ADV_EEPROM_BIG_ENDIAN          0x8000   /* EEPROM Bit 15 */
 911#define ADV_EEPROM_BIOS_ENABLE         0x4000   /* EEPROM Bit 14 */
 912/*
 913 * For the ASC3550 Bit 13 is Termination Polarity control bit.
 914 * For later ICs Bit 13 controls whether the CIS (Card Information
 915 * Service Section) is loaded from EEPROM.
 916 */
 917#define ADV_EEPROM_TERM_POL            0x2000   /* EEPROM Bit 13 */
 918#define ADV_EEPROM_CIS_LD              0x2000   /* EEPROM Bit 13 */
 919/*
 920 * ASC38C1600 Bit 11
 921 *
 922 * If EEPROM Bit 11 is 0 for Function 0, then Function 0 will specify
 923 * INT A in the PCI Configuration Space Int Pin field. If it is 1, then
 924 * Function 0 will specify INT B.
 925 *
 926 * If EEPROM Bit 11 is 0 for Function 1, then Function 1 will specify
 927 * INT B in the PCI Configuration Space Int Pin field. If it is 1, then
 928 * Function 1 will specify INT A.
 929 */
 930#define ADV_EEPROM_INTAB               0x0800   /* EEPROM Bit 11 */
 931
 932typedef struct adveep_3550_config {
 933        /* Word Offset, Description */
 934
 935        ushort cfg_lsw;         /* 00 power up initialization */
 936        /*  bit 13 set - Term Polarity Control */
 937        /*  bit 14 set - BIOS Enable */
 938        /*  bit 15 set - Big Endian Mode */
 939        ushort cfg_msw;         /* 01 unused      */
 940        ushort disc_enable;     /* 02 disconnect enable */
 941        ushort wdtr_able;       /* 03 Wide DTR able */
 942        ushort sdtr_able;       /* 04 Synchronous DTR able */
 943        ushort start_motor;     /* 05 send start up motor */
 944        ushort tagqng_able;     /* 06 tag queuing able */
 945        ushort bios_scan;       /* 07 BIOS device control */
 946        ushort scam_tolerant;   /* 08 no scam */
 947
 948        uchar adapter_scsi_id;  /* 09 Host Adapter ID */
 949        uchar bios_boot_delay;  /*    power up wait */
 950
 951        uchar scsi_reset_delay; /* 10 reset delay */
 952        uchar bios_id_lun;      /*    first boot device scsi id & lun */
 953        /*    high nibble is lun */
 954        /*    low nibble is scsi id */
 955
 956        uchar termination;      /* 11 0 - automatic */
 957        /*    1 - low off / high off */
 958        /*    2 - low off / high on */
 959        /*    3 - low on  / high on */
 960        /*    There is no low on  / high off */
 961
 962        uchar reserved1;        /*    reserved byte (not used) */
 963
 964        ushort bios_ctrl;       /* 12 BIOS control bits */
 965        /*  bit 0  BIOS don't act as initiator. */
 966        /*  bit 1  BIOS > 1 GB support */
 967        /*  bit 2  BIOS > 2 Disk Support */
 968        /*  bit 3  BIOS don't support removables */
 969        /*  bit 4  BIOS support bootable CD */
 970        /*  bit 5  BIOS scan enabled */
 971        /*  bit 6  BIOS support multiple LUNs */
 972        /*  bit 7  BIOS display of message */
 973        /*  bit 8  SCAM disabled */
 974        /*  bit 9  Reset SCSI bus during init. */
 975        /*  bit 10 */
 976        /*  bit 11 No verbose initialization. */
 977        /*  bit 12 SCSI parity enabled */
 978        /*  bit 13 */
 979        /*  bit 14 */
 980        /*  bit 15 */
 981        ushort ultra_able;      /* 13 ULTRA speed able */
 982        ushort reserved2;       /* 14 reserved */
 983        uchar max_host_qng;     /* 15 maximum host queuing */
 984        uchar max_dvc_qng;      /*    maximum per device queuing */
 985        ushort dvc_cntl;        /* 16 control bit for driver */
 986        ushort bug_fix;         /* 17 control bit for bug fix */
 987        ushort serial_number_word1;     /* 18 Board serial number word 1 */
 988        ushort serial_number_word2;     /* 19 Board serial number word 2 */
 989        ushort serial_number_word3;     /* 20 Board serial number word 3 */
 990        ushort check_sum;       /* 21 EEP check sum */
 991        uchar oem_name[16];     /* 22 OEM name */
 992        ushort dvc_err_code;    /* 30 last device driver error code */
 993        ushort adv_err_code;    /* 31 last uc and Adv Lib error code */
 994        ushort adv_err_addr;    /* 32 last uc error address */
 995        ushort saved_dvc_err_code;      /* 33 saved last dev. driver error code   */
 996        ushort saved_adv_err_code;      /* 34 saved last uc and Adv Lib error code */
 997        ushort saved_adv_err_addr;      /* 35 saved last uc error address         */
 998        ushort num_of_err;      /* 36 number of error */
 999} ADVEEP_3550_CONFIG;
1000

1001typedef struct adveep_38C0800_config {
1002        /* Word Offset, Description */
1003
1004        ushort cfg_lsw;         /* 00 power up initialization */
1005        /*  bit 13 set - Load CIS */
1006        /*  bit 14 set - BIOS Enable */
1007        /*  bit 15 set - Big Endian Mode */
1008        ushort cfg_msw;         /* 01 unused      */
1009        ushort disc_enable;     /* 02 disconnect enable */
1010        ushort wdtr_able;       /* 03 Wide DTR able */
1011        ushort sdtr_speed1;     /* 04 SDTR Speed TID 0-3 */
1012        ushort start_motor;     /* 05 send start up motor */
1013        ushort tagqng_able;     /* 06 tag queuing able */
1014        ushort bios_scan;       /* 07 BIOS device control */
1015        ushort scam_tolerant;   /* 08 no scam */
1016
1017        uchar adapter_scsi_id;  /* 09 Host Adapter ID */
1018        uchar bios_boot_delay;  /*    power up wait */
1019
1020        uchar scsi_reset_delay; /* 10 reset delay */
1021        uchar bios_id_lun;      /*    first boot device scsi id & lun */
1022        /*    high nibble is lun */
1023        /*    low nibble is scsi id */
1024
1025        uchar termination_se;   /* 11 0 - automatic */
1026        /*    1 - low off / high off */
1027        /*    2 - low off / high on */
1028        /*    3 - low on  / high on */
1029        /*    There is no low on  / high off */
1030
1031        uchar termination_lvd;  /* 11 0 - automatic */
1032        /*    1 - low off / high off */
1033        /*    2 - low off / high on */
1034        /*    3 - low on  / high on */
1035        /*    There is no low on  / high off */
1036
1037        ushort bios_ctrl;       /* 12 BIOS control bits */
1038        /*  bit 0  BIOS don't act as initiator. */
1039        /*  bit 1  BIOS > 1 GB support */
1040        /*  bit 2  BIOS > 2 Disk Support */
1041        /*  bit 3  BIOS don't support removables */
1042        /*  bit 4  BIOS support bootable CD */
1043        /*  bit 5  BIOS scan enabled */
1044        /*  bit 6  BIOS support multiple LUNs */
1045        /*  bit 7  BIOS display of message */
1046        /*  bit 8  SCAM disabled */
1047        /*  bit 9  Reset SCSI bus during init. */
1048        /*  bit 10 */
1049        /*  bit 11 No verbose initialization. */
1050        /*  bit 12 SCSI parity enabled */
1051        /*  bit 13 */
1052        /*  bit 14 */
1053        /*  bit 15 */
1054        ushort sdtr_speed2;     /* 13 SDTR speed TID 4-7 */
1055        ushort sdtr_speed3;     /* 14 SDTR speed TID 8-11 */
1056        uchar max_host_qng;     /* 15 maximum host queueing */
1057        uchar max_dvc_qng;      /*    maximum per device queuing */
1058        ushort dvc_cntl;        /* 16 control bit for driver */
1059        ushort sdtr_speed4;     /* 17 SDTR speed 4 TID 12-15 */
1060        ushort serial_number_word1;     /* 18 Board serial number word 1 */
1061        ushort serial_number_word2;     /* 19 Board serial number word 2 */
1062        ushort serial_number_word3;     /* 20 Board serial number word 3 */
1063        ushort check_sum;       /* 21 EEP check sum */
1064        uchar oem_name[16];     /* 22 OEM name */
1065        ushort dvc_err_code;    /* 30 last device driver error code */
1066        ushort adv_err_code;    /* 31 last uc and Adv Lib error code */
1067        ushort adv_err_addr;    /* 32 last uc error address */
1068        ushort saved_dvc_err_code;      /* 33 saved last dev. driver error code   */
1069        ushort saved_adv_err_code;      /* 34 saved last uc and Adv Lib error code */
1070        ushort saved_adv_err_addr;      /* 35 saved last uc error address         */
1071        ushort reserved36;      /* 36 reserved */
1072        ushort reserved37;      /* 37 reserved */
1073        ushort reserved38;      /* 38 reserved */
1074        ushort reserved39;      /* 39 reserved */
1075        ushort reserved40;      /* 40 reserved */
1076        ushort reserved41;      /* 41 reserved */
1077        ushort reserved42;      /* 42 reserved */
1078        ushort reserved43;      /* 43 reserved */
1079        ushort reserved44;      /* 44 reserved */
1080        ushort reserved45;      /* 45 reserved */
1081        ushort reserved46;      /* 46 reserved */
1082        ushort reserved47;      /* 47 reserved */
1083        ushort reserved48;      /* 48 reserved */
1084        ushort reserved49;      /* 49 reserved */
1085        ushort reserved50;      /* 50 reserved */
1086        ushort reserved51;      /* 51 reserved */
1087        ushort reserved52;      /* 52 reserved */
1088        ushort reserved53;      /* 53 reserved */
1089        ushort reserved54;      /* 54 reserved */
1090        ushort reserved55;      /* 55 reserved */
1091        ushort cisptr_lsw;      /* 56 CIS PTR LSW */
1092        ushort cisprt_msw;      /* 57 CIS PTR MSW */
1093        ushort subsysvid;       /* 58 SubSystem Vendor ID */
1094        ushort subsysid;        /* 59 SubSystem ID */
1095        ushort reserved60;      /* 60 reserved */
1096        ushort reserved61;      /* 61 reserved */
1097        ushort reserved62;      /* 62 reserved */
1098        ushort reserved63;      /* 63 reserved */
1099} ADVEEP_38C0800_CONFIG;
1100
1101typedef struct adveep_38C1600_config {
1102        /* Word Offset, Description */
1103
1104        ushort cfg_lsw;         /* 00 power up initialization */
1105        /*  bit 11 set - Func. 0 INTB, Func. 1 INTA */
1106        /*       clear - Func. 0 INTA, Func. 1 INTB */
1107        /*  bit 13 set - Load CIS */
1108        /*  bit 14 set - BIOS Enable */
1109        /*  bit 15 set - Big Endian Mode */
1110        ushort cfg_msw;         /* 01 unused */
1111        ushort disc_enable;     /* 02 disconnect enable */
1112        ushort wdtr_able;       /* 03 Wide DTR able */
1113        ushort sdtr_speed1;     /* 04 SDTR Speed TID 0-3 */
1114        ushort start_motor;     /* 05 send start up motor */
1115        ushort tagqng_able;     /* 06 tag queuing able */
1116        ushort bios_scan;       /* 07 BIOS device control */
1117        ushort scam_tolerant;   /* 08 no scam */
1118
1119        uchar adapter_scsi_id;  /* 09 Host Adapter ID */
1120        uchar bios_boot_delay;  /*    power up wait */
1121
1122        uchar scsi_reset_delay; /* 10 reset delay */
1123        uchar bios_id_lun;      /*    first boot device scsi id & lun */
1124        /*    high nibble is lun */
1125        /*    low nibble is scsi id */
1126
1127        uchar termination_se;   /* 11 0 - automatic */
1128        /*    1 - low off / high off */
1129        /*    2 - low off / high on */
1130        /*    3 - low on  / high on */
1131        /*    There is no low on  / high off */
1132
1133        uchar termination_lvd;  /* 11 0 - automatic */
1134        /*    1 - low off / high off */
1135        /*    2 - low off / high on */
1136        /*    3 - low on  / high on */
1137        /*    There is no low on  / high off */
1138
1139        ushort bios_ctrl;       /* 12 BIOS control bits */
1140        /*  bit 0  BIOS don't act as initiator. */
1141        /*  bit 1  BIOS > 1 GB support */
1142        /*  bit 2  BIOS > 2 Disk Support */
1143        /*  bit 3  BIOS don't support removables */
1144        /*  bit 4  BIOS support bootable CD */
1145        /*  bit 5  BIOS scan enabled */
1146        /*  bit 6  BIOS support multiple LUNs */
1147        /*  bit 7  BIOS display of message */
1148        /*  bit 8  SCAM disabled */
1149        /*  bit 9  Reset SCSI bus during init. */
1150        /*  bit 10 Basic Integrity Checking disabled */
1151        /*  bit 11 No verbose initialization. */
1152        /*  bit 12 SCSI parity enabled */
1153        /*  bit 13 AIPP (Asyn. Info. Ph. Prot.) dis. */
1154        /*  bit 14 */
1155        /*  bit 15 */
1156        ushort sdtr_speed2;     /* 13 SDTR speed TID 4-7 */
1157        ushort sdtr_speed3;     /* 14 SDTR speed TID 8-11 */
1158        uchar max_host_qng;     /* 15 maximum host queueing */
1159        uchar max_dvc_qng;      /*    maximum per device queuing */
1160        ushort dvc_cntl;        /* 16 control bit for driver */
1161        ushort sdtr_speed4;     /* 17 SDTR speed 4 TID 12-15 */
1162        ushort serial_number_word1;     /* 18 Board serial number word 1 */
1163        ushort serial_number_word2;     /* 19 Board serial number word 2 */
1164        ushort serial_number_word3;     /* 20 Board serial number word 3 */
1165        ushort check_sum;       /* 21 EEP check sum */
1166        uchar oem_name[16];     /* 22 OEM name */
1167        ushort dvc_err_code;    /* 30 last device driver error code */
1168        ushort adv_err_code;    /* 31 last uc and Adv Lib error code */
1169        ushort adv_err_addr;    /* 32 last uc error address */
1170        ushort saved_dvc_err_code;      /* 33 saved last dev. driver error code   */
1171        ushort saved_adv_err_code;      /* 34 saved last uc and Adv Lib error code */
1172        ushort saved_adv_err_addr;      /* 35 saved last uc error address         */
1173        ushort reserved36;      /* 36 reserved */
1174        ushort reserved37;      /* 37 reserved */
1175        ushort reserved38;      /* 38 reserved */
1176        ushort reserved39;      /* 39 reserved */
1177        ushort reserved40;      /* 40 reserved */
1178        ushort reserved41;      /* 41 reserved */
1179        ushort reserved42;      /* 42 reserved */
1180        ushort reserved43;      /* 43 reserved */
1181        ushort reserved44;      /* 44 reserved */
1182        ushort reserved45;      /* 45 reserved */
1183        ushort reserved46;      /* 46 reserved */
1184        ushort reserved47;      /* 47 reserved */
1185        ushort reserved48;      /* 48 reserved */
1186        ushort reserved49;      /* 49 reserved */
1187        ushort reserved50;      /* 50 reserved */
1188        ushort reserved51;      /* 51 reserved */
1189        ushort reserved52;      /* 52 reserved */
1190        ushort reserved53;      /* 53 reserved */
1191        ushort reserved54;      /* 54 reserved */
1192        ushort reserved55;      /* 55 reserved */
1193        ushort cisptr_lsw;      /* 56 CIS PTR LSW */
1194        ushort cisprt_msw;      /* 57 CIS PTR MSW */
1195        ushort subsysvid;       /* 58 SubSystem Vendor ID */
1196        ushort subsysid;        /* 59 SubSystem ID */
1197        ushort reserved60;      /* 60 reserved */
1198        ushort reserved61;      /* 61 reserved */
1199        ushort reserved62;      /* 62 reserved */
1200        ushort reserved63;      /* 63 reserved */
1201} ADVEEP_38C1600_CONFIG;
1202
1203/*
1204 * EEPROM Commands
1205 */
1206#define ASC_EEP_CMD_DONE             0x0200
1207
1208/* bios_ctrl */
1209#define BIOS_CTRL_BIOS               0x0001
1210#define BIOS_CTRL_EXTENDED_XLAT      0x0002
1211#define BIOS_CTRL_GT_2_DISK          0x0004
1212#define BIOS_CTRL_BIOS_REMOVABLE     0x0008
1213#define BIOS_CTRL_BOOTABLE_CD        0x0010
1214#define BIOS_CTRL_MULTIPLE_LUN       0x0040
1215#define BIOS_CTRL_DISPLAY_MSG        0x0080
1216#define BIOS_CTRL_NO_SCAM            0x0100
1217#define BIOS_CTRL_RESET_SCSI_BUS     0x0200
1218#define BIOS_CTRL_INIT_VERBOSE       0x0800
1219#define BIOS_CTRL_SCSI_PARITY        0x1000
1220#define BIOS_CTRL_AIPP_DIS           0x2000
1221
1222#define ADV_3550_MEMSIZE   0x2000       /* 8 KB Internal Memory */
1223
1224#define ADV_38C0800_MEMSIZE  0x4000     /* 16 KB Internal Memory */
1225
1226/*
1227 * XXX - Since ASC38C1600 Rev.3 has a local RAM failure issue, there is
1228 * a special 16K Adv Library and Microcode version. After the issue is
1229 * resolved, should restore 32K support.
1230 *
1231 * #define ADV_38C1600_MEMSIZE  0x8000L   * 32 KB Internal Memory *
1232 */
1233#define ADV_38C1600_MEMSIZE  0x4000     /* 16 KB Internal Memory */
1234
1235/*
1236 * Byte I/O register address from base of 'iop_base'.
1237 */
1238#define IOPB_INTR_STATUS_REG    0x00
1239#define IOPB_CHIP_ID_1          0x01
1240#define IOPB_INTR_ENABLES       0x02
1241#define IOPB_CHIP_TYPE_REV      0x03
1242#define IOPB_RES_ADDR_4         0x04
1243#define IOPB_RES_ADDR_5         0x05
1244#define IOPB_RAM_DATA           0x06
1245#define IOPB_RES_ADDR_7         0x07
1246#define IOPB_FLAG_REG           0x08
1247#define IOPB_RES_ADDR_9         0x09
1248#define IOPB_RISC_CSR           0x0A
1249#define IOPB_RES_ADDR_B         0x0B
1250#define IOPB_RES_ADDR_C         0x0C
1251#define IOPB_RES_ADDR_D         0x0D
1252#define IOPB_SOFT_OVER_WR       0x0E
1253#define IOPB_RES_ADDR_F         0x0F
1254#define IOPB_MEM_CFG            0x10
1255#define IOPB_RES_ADDR_11        0x11
1256#define IOPB_GPIO_DATA          0x12
1257#define IOPB_RES_ADDR_13        0x13
1258#define IOPB_FLASH_PAGE         0x14
1259#define IOPB_RES_ADDR_15        0x15
1260#define IOPB_GPIO_CNTL          0x16
1261#define IOPB_RES_ADDR_17        0x17
1262#define IOPB_FLASH_DATA         0x18
1263#define IOPB_RES_ADDR_19        0x19
1264#define IOPB_RES_ADDR_1A        0x1A
1265#define IOPB_RES_ADDR_1B        0x1B
1266#define IOPB_RES_ADDR_1C        0x1C
1267#define IOPB_RES_ADDR_1D        0x1D
1268#define IOPB_RES_ADDR_1E        0x1E
1269#define IOPB_RES_ADDR_1F        0x1F
1270#define IOPB_DMA_CFG0           0x20
1271#define IOPB_DMA_CFG1           0x21
1272#define IOPB_TICKLE             0x22
1273#define IOPB_DMA_REG_WR         0x23
1274#define IOPB_SDMA_STATUS        0x24
1275#define IOPB_SCSI_BYTE_CNT      0x25
1276#define IOPB_HOST_BYTE_CNT      0x26
1277#define IOPB_BYTE_LEFT_TO_XFER  0x27
1278#define IOPB_BYTE_TO_XFER_0     0x28
1279#define IOPB_BYTE_TO_XFER_1     0x29
1280#define IOPB_BYTE_TO_XFER_2     0x2A
1281#define IOPB_BYTE_TO_XFER_3     0x2B
1282#define IOPB_ACC_GRP            0x2C
1283#define IOPB_RES_ADDR_2D        0x2D
1284#define IOPB_DEV_ID             0x2E
1285#define IOPB_RES_ADDR_2F        0x2F
1286#define IOPB_SCSI_DATA          0x30
1287#define IOPB_RES_ADDR_31        0x31
1288#define IOPB_RES_ADDR_32        0x32
1289#define IOPB_SCSI_DATA_HSHK     0x33
1290#define IOPB_SCSI_CTRL          0x34
1291#define IOPB_RES_ADDR_35        0x35
1292#define IOPB_RES_ADDR_36        0x36
1293#define IOPB_RES_ADDR_37        0x37
1294#define IOPB_RAM_BIST           0x38
1295#define IOPB_PLL_TEST           0x39
1296#define IOPB_PCI_INT_CFG        0x3A
1297#define IOPB_RES_ADDR_3B        0x3B
1298#define IOPB_RFIFO_CNT          0x3C
1299#define IOPB_RES_ADDR_3D        0x3D
1300#define IOPB_RES_ADDR_3E        0x3E
1301#define IOPB_RES_ADDR_3F        0x3F
1302
1303/*
1304 * Word I/O register address from base of 'iop_base'.
1305 */
1306#define IOPW_CHIP_ID_0          0x00    /* CID0  */
1307#define IOPW_CTRL_REG           0x02    /* CC    */
1308#define IOPW_RAM_ADDR           0x04    /* LA    */
1309#define IOPW_RAM_DATA           0x06    /* LD    */
1310#define IOPW_RES_ADDR_08        0x08
1311#define IOPW_RISC_CSR           0x0A    /* CSR   */
1312#define IOPW_SCSI_CFG0          0x0C    /* CFG0  */
1313#define IOPW_SCSI_CFG1          0x0E    /* CFG1  */
1314#define IOPW_RES_ADDR_10        0x10
1315#define IOPW_SEL_MASK           0x12    /* SM    */
1316#define IOPW_RES_ADDR_14        0x14
1317#define IOPW_FLASH_ADDR         0x16    /* FA    */
1318#define IOPW_RES_ADDR_18        0x18
1319#define IOPW_EE_CMD             0x1A    /* EC    */
1320#define IOPW_EE_DATA            0x1C    /* ED    */
1321#define IOPW_SFIFO_CNT          0x1E    /* SFC   */
1322#define IOPW_RES_ADDR_20        0x20
1323#define IOPW_Q_BASE             0x22    /* QB    */
1324#define IOPW_QP                 0x24    /* QP    */
1325#define IOPW_IX                 0x26    /* IX    */
1326#define IOPW_SP                 0x28    /* SP    */
1327#define IOPW_PC                 0x2A    /* PC    */
1328#define IOPW_RES_ADDR_2C        0x2C
1329#define IOPW_RES_ADDR_2E        0x2E
1330#define IOPW_SCSI_DATA          0x30    /* SD    */
1331#define IOPW_SCSI_DATA_HSHK     0x32    /* SDH   */
1332#define IOPW_SCSI_CTRL          0x34    /* SC    */
1333#define IOPW_HSHK_CFG           0x36    /* HCFG  */
1334#define IOPW_SXFR_STATUS        0x36    /* SXS   */
1335#define IOPW_SXFR_CNTL          0x38    /* SXL   */
1336#define IOPW_SXFR_CNTH          0x3A    /* SXH   */
1337#define IOPW_RES_ADDR_3C        0x3C
1338#define IOPW_RFIFO_DATA         0x3E    /* RFD   */
1339
1340/*
1341 * Doubleword I/O register address from base of 'iop_base'.
1342 */
1343#define IOPDW_RES_ADDR_0         0x00
1344#define IOPDW_RAM_DATA           0x04
1345#define IOPDW_RES_ADDR_8         0x08
1346#define IOPDW_RES_ADDR_C         0x0C
1347#define IOPDW_RES_ADDR_10        0x10
1348#define IOPDW_COMMA              0x14
1349#define IOPDW_COMMB              0x18
1350#define IOPDW_RES_ADDR_1C        0x1C
1351#define IOPDW_SDMA_ADDR0         0x20
1352#define IOPDW_SDMA_ADDR1         0x24
1353#define IOPDW_SDMA_COUNT         0x28
1354#define IOPDW_SDMA_ERROR         0x2C
1355#define IOPDW_RDMA_ADDR0         0x30
1356#define IOPDW_RDMA_ADDR1         0x34
1357#define IOPDW_RDMA_COUNT         0x38
1358#define IOPDW_RDMA_ERROR         0x3C
1359
1360#define ADV_CHIP_ID_BYTE         0x25
1361#define ADV_CHIP_ID_WORD         0x04C1
1362
1363#define ADV_INTR_ENABLE_HOST_INTR                   0x01
1364#define ADV_INTR_ENABLE_SEL_INTR                    0x02
1365#define ADV_INTR_ENABLE_DPR_INTR                    0x04
1366#define ADV_INTR_ENABLE_RTA_INTR                    0x08
1367#define ADV_INTR_ENABLE_RMA_INTR                    0x10
1368#define ADV_INTR_ENABLE_RST_INTR                    0x20
1369#define ADV_INTR_ENABLE_DPE_INTR                    0x40
1370#define ADV_INTR_ENABLE_GLOBAL_INTR                 0x80
1371
1372#define ADV_INTR_STATUS_INTRA            0x01
1373#define ADV_INTR_STATUS_INTRB            0x02
1374#define ADV_INTR_STATUS_INTRC            0x04
1375
1376#define ADV_RISC_CSR_STOP           (0x0000)
1377#define ADV_RISC_TEST_COND          (0x2000)
1378#define ADV_RISC_CSR_RUN            (0x4000)
1379#define ADV_RISC_CSR_SINGLE_STEP    (0x8000)
1380
1381#define ADV_CTRL_REG_HOST_INTR      0x0100
1382#define ADV_CTRL_REG_SEL_INTR       0x0200
1383#define ADV_CTRL_REG_DPR_INTR       0x0400
1384#define ADV_CTRL_REG_RTA_INTR       0x0800
1385#define ADV_CTRL_REG_RMA_INTR       0x1000
1386#define ADV_CTRL_REG_RES_BIT14      0x2000
1387#define ADV_CTRL_REG_DPE_INTR       0x4000
1388#define ADV_CTRL_REG_POWER_DONE     0x8000
1389#define ADV_CTRL_REG_ANY_INTR       0xFF00
1390
1391#define ADV_CTRL_REG_CMD_RESET             0x00C6
1392#define ADV_CTRL_REG_CMD_WR_IO_REG         0x00C5
1393#define ADV_CTRL_REG_CMD_RD_IO_REG         0x00C4
1394#define ADV_CTRL_REG_CMD_WR_PCI_CFG_SPACE  0x00C3
1395#define ADV_CTRL_REG_CMD_RD_PCI_CFG_SPACE  0x00C2
1396
1397#define ADV_TICKLE_NOP                      0x00
1398#define ADV_TICKLE_A                        0x01
1399#define ADV_TICKLE_B                        0x02
1400#define ADV_TICKLE_C                        0x03
1401
1402#define AdvIsIntPending(port) \
1403    (AdvReadWordRegister(port, IOPW_CTRL_REG) & ADV_CTRL_REG_HOST_INTR)
1404
1405/*
1406 * SCSI_CFG0 Register bit definitions
1407 */
1408#define TIMER_MODEAB    0xC000  /* Watchdog, Second, and Select. Timer Ctrl. */
1409#define PARITY_EN       0x2000  /* Enable SCSI Parity Error detection */
1410#define EVEN_PARITY     0x1000  /* Select Even Parity */
1411#define WD_LONG         0x0800  /* Watchdog Interval, 1: 57 min, 0: 13 sec */
1412#define QUEUE_128       0x0400  /* Queue Size, 1: 128 byte, 0: 64 byte */
1413#define PRIM_MODE       0x0100  /* Primitive SCSI mode */
1414#define SCAM_EN         0x0080  /* Enable SCAM selection */
1415#define SEL_TMO_LONG    0x0040  /* Sel/Resel Timeout, 1: 400 ms, 0: 1.6 ms */
1416#define CFRM_ID         0x0020  /* SCAM id sel. confirm., 1: fast, 0: 6.4 ms */
1417#define OUR_ID_EN       0x0010  /* Enable OUR_ID bits */
1418#define OUR_ID          0x000F  /* SCSI ID */
1419
1420/*
1421 * SCSI_CFG1 Register bit definitions
1422 */
1423#define BIG_ENDIAN      0x8000  /* Enable Big Endian Mode MIO:15, EEP:15 */
1424#define TERM_POL        0x2000  /* Terminator Polarity Ctrl. MIO:13, EEP:13 */
1425#define SLEW_RATE       0x1000  /* SCSI output buffer slew rate */
1426#define FILTER_SEL      0x0C00  /* Filter Period Selection */
1427#define  FLTR_DISABLE    0x0000 /* Input Filtering Disabled */
1428#define  FLTR_11_TO_20NS 0x0800 /* Input Filtering 11ns to 20ns */
1429#define  FLTR_21_TO_39NS 0x0C00 /* Input Filtering 21ns to 39ns */
1430#define ACTIVE_DBL      0x0200  /* Disable Active Negation */
1431#define DIFF_MODE       0x0100  /* SCSI differential Mode (Read-Only) */
1432#define DIFF_SENSE      0x0080  /* 1: No SE cables, 0: SE cable (Read-Only) */
1433#define TERM_CTL_SEL    0x0040  /* Enable TERM_CTL_H and TERM_CTL_L */
1434#define TERM_CTL        0x0030  /* External SCSI Termination Bits */
1435#define  TERM_CTL_H      0x0020 /* Enable External SCSI Upper Termination */
1436#define  TERM_CTL_L      0x0010 /* Enable External SCSI Lower Termination */
1437#define CABLE_DETECT    0x000F  /* External SCSI Cable Connection Status */
1438
1439/*
1440 * Addendum for ASC-38C0800 Chip
1441 *
1442 * The ASC-38C1600 Chip uses the same definitions except that the
1443 * bus mode override bits [12:10] have been moved to byte register
1444 * offset 0xE (IOPB_SOFT_OVER_WR) bits [12:10]. The [12:10] bits in
1445 * SCSI_CFG1 are read-only and always available. Bit 14 (DIS_TERM_DRV)
1446 * is not needed. The [12:10] bits in IOPB_SOFT_OVER_WR are write-only.
1447 * Also each ASC-38C1600 function or channel uses only cable bits [5:4]
1448 * and [1:0]. Bits [14], [7:6], [3:2] are unused.
1449 */
1450#define DIS_TERM_DRV    0x4000  /* 1: Read c_det[3:0], 0: cannot read */
1451#define HVD_LVD_SE      0x1C00  /* Device Detect Bits */
1452#define  HVD             0x1000 /* HVD Device Detect */
1453#define  LVD             0x0800 /* LVD Device Detect */
1454#define  SE              0x0400 /* SE Device Detect */
1455#define TERM_LVD        0x00C0  /* LVD Termination Bits */
1456#define  TERM_LVD_HI     0x0080 /* Enable LVD Upper Termination */
1457#define  TERM_LVD_LO     0x0040 /* Enable LVD Lower Termination */
1458#define TERM_SE         0x0030  /* SE Termination Bits */
1459#define  TERM_SE_HI      0x0020 /* Enable SE Upper Termination */
1460#define  TERM_SE_LO      0x0010 /* Enable SE Lower Termination */
1461#define C_DET_LVD       0x000C  /* LVD Cable Detect Bits */
1462#define  C_DET3          0x0008 /* Cable Detect for LVD External Wide */
1463#define  C_DET2          0x0004 /* Cable Detect for LVD Internal Wide */
1464#define C_DET_SE        0x0003  /* SE Cable Detect Bits */
1465#define  C_DET1          0x0002 /* Cable Detect for SE Internal Wide */
1466#define  C_DET0          0x0001 /* Cable Detect for SE Internal Narrow */
1467
1468#define CABLE_ILLEGAL_A 0x7
1469    /* x 0 0 0  | on  on | Illegal (all 3 connectors are used) */
1470
1471#define CABLE_ILLEGAL_B 0xB
1472    /* 0 x 0 0  | on  on | Illegal (all 3 connectors are used) */
1473
1474/*
1475 * MEM_CFG Register bit definitions
1476 */
1477#define BIOS_EN         0x40    /* BIOS Enable MIO:14,EEP:14 */
1478#define FAST_EE_CLK     0x20    /* Diagnostic Bit */
1479#define RAM_SZ          0x1C    /* Specify size of RAM to RISC */
1480#define  RAM_SZ_2KB      0x00   /* 2 KB */
1481#define  RAM_SZ_4KB      0x04   /* 4 KB */
1482#define  RAM_SZ_8KB      0x08   /* 8 KB */
1483#define  RAM_SZ_16KB     0x0C   /* 16 KB */
1484#define  RAM_SZ_32KB     0x10   /* 32 KB */
1485#define  RAM_SZ_64KB     0x14   /* 64 KB */
1486
1487/*
1488 * DMA_CFG0 Register bit definitions
1489 *
1490 * This register is only accessible to the host.
1491 */
1492#define BC_THRESH_ENB   0x80    /* PCI DMA Start Conditions */
1493#define FIFO_THRESH     0x70    /* PCI DMA FIFO Threshold */
1494#define  FIFO_THRESH_16B  0x00  /* 16 bytes */
1495#define  FIFO_THRESH_32B  0x20  /* 32 bytes */
1496#define  FIFO_THRESH_48B  0x30  /* 48 bytes */
1497#define  FIFO_THRESH_64B  0x40  /* 64 bytes */
1498#define  FIFO_THRESH_80B  0x50  /* 80 bytes (default) */
1499#define  FIFO_THRESH_96B  0x60  /* 96 bytes */
1500#define  FIFO_THRESH_112B 0x70  /* 112 bytes */
1501#define START_CTL       0x0C    /* DMA start conditions */
1502#define  START_CTL_TH    0x00   /* Wait threshold level (default) */
1503#define  START_CTL_ID    0x04   /* Wait SDMA/SBUS idle */
1504#define  START_CTL_THID  0x08   /* Wait threshold and SDMA/SBUS idle */
1505#define  START_CTL_EMFU  0x0C   /* Wait SDMA FIFO empty/full */
1506#define READ_CMD        0x03    /* Memory Read Method */
1507#define  READ_CMD_MR     0x00   /* Memory Read */
1508#define  READ_CMD_MRL    0x02   /* Memory Read Long */
1509#define  READ_CMD_MRM    0x03   /* Memory Read Multiple (default) */
1510
1511/*
1512 * ASC-38C0800 RAM BIST Register bit definitions
1513 */
1514#define RAM_TEST_MODE         0x80
1515#define PRE_TEST_MODE         0x40
1516#define NORMAL_MODE           0x00
1517#define RAM_TEST_DONE         0x10
1518#define RAM_TEST_STATUS       0x0F
1519#define  RAM_TEST_HOST_ERROR   0x08
1520#define  RAM_TEST_INTRAM_ERROR 0x04
1521#define  RAM_TEST_RISC_ERROR   0x02
1522#define  RAM_TEST_SCSI_ERROR   0x01
1523#define  RAM_TEST_SUCCESS      0x00
1524#define PRE_TEST_VALUE        0x05
1525#define NORMAL_VALUE          0x00
1526
1527/*
1528 * ASC38C1600 Definitions
1529 *
1530 * IOPB_PCI_INT_CFG Bit Field Definitions
1531 */
1532
1533#define INTAB_LD        0x80    /* Value loaded from EEPROM Bit 11. */
1534
1535/*
1536 * Bit 1 can be set to change the interrupt for the Function to operate in
1537 * Totem Pole mode. By default Bit 1 is 0 and the interrupt operates in
1538 * Open Drain mode. Both functions of the ASC38C1600 must be set to the same
1539 * mode, otherwise the operating mode is undefined.
1540 */
1541#define TOTEMPOLE       0x02
1542
1543/*
1544 * Bit 0 can be used to change the Int Pin for the Function. The value is
1545 * 0 by default for both Functions with Function 0 using INT A and Function
1546 * B using INT B. For Function 0 if set, INT B is used. For Function 1 if set,
1547 * INT A is used.
1548 *
1549 * EEPROM Word 0 Bit 11 for each Function may change the initial Int Pin
1550 * value specified in the PCI Configuration Space.
1551 */
1552#define INTAB           0x01
1553
1554/*
1555 * Adv Library Status Definitions
1556 */
1557#define ADV_TRUE        1
1558#define ADV_FALSE       0
1559#define ADV_SUCCESS     1
1560#define ADV_BUSY        0
1561#define ADV_ERROR       (-1)
1562
1563/*
1564 * ADV_DVC_VAR 'warn_code' values
1565 */
1566#define ASC_WARN_BUSRESET_ERROR         0x0001  /* SCSI Bus Reset error */
1567#define ASC_WARN_EEPROM_CHKSUM          0x0002  /* EEP check sum error */
1568#define ASC_WARN_EEPROM_TERMINATION     0x0004  /* EEP termination bad field */
1569#define ASC_WARN_ERROR                  0xFFFF  /* ADV_ERROR return */
1570
1571#define ADV_MAX_TID                     15      /* max. target identifier */
1572#define ADV_MAX_LUN                     7       /* max. logical unit number */
1573
1574/*
1575 * Fixed locations of microcode operating variables.
1576 */
1577#define ASC_MC_CODE_BEGIN_ADDR          0x0028  /* microcode start address */
1578#define ASC_MC_CODE_END_ADDR            0x002A  /* microcode end address */
1579#define ASC_MC_CODE_CHK_SUM             0x002C  /* microcode code checksum */
1580#define ASC_MC_VERSION_DATE             0x0038  /* microcode version */
1581#define ASC_MC_VERSION_NUM              0x003A  /* microcode number */
1582#define ASC_MC_BIOSMEM                  0x0040  /* BIOS RISC Memory Start */
1583#define ASC_MC_BIOSLEN                  0x0050  /* BIOS RISC Memory Length */
1584#define ASC_MC_BIOS_SIGNATURE           0x0058  /* BIOS Signature 0x55AA */
1585#define ASC_MC_BIOS_VERSION             0x005A  /* BIOS Version (2 bytes) */
1586#define ASC_MC_SDTR_SPEED1              0x0090  /* SDTR Speed for TID 0-3 */
1587#define ASC_MC_SDTR_SPEED2              0x0092  /* SDTR Speed for TID 4-7 */
1588#define ASC_MC_SDTR_SPEED3              0x0094  /* SDTR Speed for TID 8-11 */
1589#define ASC_MC_SDTR_SPEED4              0x0096  /* SDTR Speed for TID 12-15 */
1590#define ASC_MC_CHIP_TYPE                0x009A
1591#define ASC_MC_INTRB_CODE               0x009B
1592#define ASC_MC_WDTR_ABLE                0x009C
1593#define ASC_MC_SDTR_ABLE                0x009E
1594#define ASC_MC_TAGQNG_ABLE              0x00A0
1595#define ASC_MC_DISC_ENABLE              0x00A2
1596#define ASC_MC_IDLE_CMD_STATUS          0x00A4
1597#define ASC_MC_IDLE_CMD                 0x00A6
1598#define ASC_MC_IDLE_CMD_PARAMETER       0x00A8
1599#define ASC_MC_DEFAULT_SCSI_CFG0        0x00AC
1600#define ASC_MC_DEFAULT_SCSI_CFG1        0x00AE
1601#define ASC_MC_DEFAULT_MEM_CFG          0x00B0
1602#define ASC_MC_DEFAULT_SEL_MASK         0x00B2
1603#define ASC_MC_SDTR_DONE                0x00B6
1604#define ASC_MC_NUMBER_OF_QUEUED_CMD     0x00C0
1605#define ASC_MC_NUMBER_OF_MAX_CMD        0x00D0
1606#define ASC_MC_DEVICE_HSHK_CFG_TABLE    0x0100
1607#define ASC_MC_CONTROL_FLAG             0x0122  /* Microcode control flag. */
1608#define ASC_MC_WDTR_DONE                0x0124
1609#define ASC_MC_CAM_MODE_MASK            0x015E  /* CAM mode TID bitmask. */
1610#define ASC_MC_ICQ                      0x0160
1611#define ASC_MC_IRQ                      0x0164
1612#define ASC_MC_PPR_ABLE                 0x017A
1613
1614/*
1615 * BIOS LRAM variable absolute offsets.
1616 */
1617#define BIOS_CODESEG    0x54
1618#define BIOS_CODELEN    0x56
1619#define BIOS_SIGNATURE  0x58
1620#define BIOS_VERSION    0x5A
1621
1622/*
1623 * Microcode Control Flags
1624 *
1625 * Flags set by the Adv Library in RISC variable 'control_flag' (0x122)
1626 * and handled by the microcode.
1627 */
1628#define CONTROL_FLAG_IGNORE_PERR        0x0001  /* Ignore DMA Parity Errors */
1629#define CONTROL_FLAG_ENABLE_AIPP        0x0002  /* Enabled AIPP checking. */
1630
1631/*
1632 * ASC_MC_DEVICE_HSHK_CFG_TABLE microcode table or HSHK_CFG register format
1633 */
1634#define HSHK_CFG_WIDE_XFR       0x8000
1635#define HSHK_CFG_RATE           0x0F00
1636#define HSHK_CFG_OFFSET         0x001F
1637
1638#define ASC_DEF_MAX_HOST_QNG    0xFD    /* Max. number of host commands (253) */
1639#define ASC_DEF_MIN_HOST_QNG    0x10    /* Min. number of host commands (16) */
1640#define ASC_DEF_MAX_DVC_QNG     0x3F    /* Max. number commands per device (63) */
1641#define ASC_DEF_MIN_DVC_QNG     0x04    /* Min. number commands per device (4) */
1642
1643#define ASC_QC_DATA_CHECK  0x01 /* Require ASC_QC_DATA_OUT set or clear. */
1644#define ASC_QC_DATA_OUT    0x02 /* Data out DMA transfer. */
1645#define ASC_QC_START_MOTOR 0x04 /* Send auto-start motor before request. */
1646#define ASC_QC_NO_OVERRUN  0x08 /* Don't report overrun. */
1647#define ASC_QC_FREEZE_TIDQ 0x10 /* Freeze TID queue after request. XXX TBD */
1648
1649#define ASC_QSC_NO_DISC     0x01        /* Don't allow disconnect for request. */
1650#define ASC_QSC_NO_TAGMSG   0x02        /* Don't allow tag queuing for request. */
1651#define ASC_QSC_NO_SYNC     0x04        /* Don't use Synch. transfer on request. */
1652#define ASC_QSC_NO_WIDE     0x08        /* Don't use Wide transfer on request. */
1653#define ASC_QSC_REDO_DTR    0x10        /* Renegotiate WDTR/SDTR before request. */
1654/*
1655 * Note: If a Tag Message is to be sent and neither ASC_QSC_HEAD_TAG or
1656 * ASC_QSC_ORDERED_TAG is set, then a Simple Tag Message (0x20) is used.
1657 */
1658#define ASC_QSC_HEAD_TAG    0x40        /* Use Head Tag Message (0x21). */
1659#define ASC_QSC_ORDERED_TAG 0x80        /* Use Ordered Tag Message (0x22). */
1660
1661/*
1662 * All fields here are accessed by the board microcode and need to be
1663 * little-endian.
1664 */
1665typedef struct adv_carr_t {
1666        __le32 carr_va; /* Carrier Virtual Address */
1667        __le32 carr_pa; /* Carrier Physical Address */
1668        __le32 areq_vpa;        /* ADV_SCSI_REQ_Q Virtual or Physical Address */
1669        /*
1670         * next_vpa [31:4]            Carrier Virtual or Physical Next Pointer
1671         *
1672         * next_vpa [3:1]             Reserved Bits
1673         * next_vpa [0]               Done Flag set in Response Queue.
1674         */
1675        __le32 next_vpa;
1676} ADV_CARR_T;
1677
1678/*
1679 * Mask used to eliminate low 4 bits of carrier 'next_vpa' field.
1680 */
1681#define ADV_NEXT_VPA_MASK       0xFFFFFFF0
1682
1683#define ADV_RQ_DONE             0x00000001
1684#define ADV_RQ_GOOD             0x00000002
1685#define ADV_CQ_STOPPER          0x00000000
1686
1687#define ADV_GET_CARRP(carrp) ((carrp) & ADV_NEXT_VPA_MASK)
1688
1689/*
1690 * Each carrier is 64 bytes, and we need three additional
1691 * carrier for icq, irq, and the termination carrier.
1692 */
1693#define ADV_CARRIER_COUNT (ASC_DEF_MAX_HOST_QNG + 3)
1694
1695#define ADV_CARRIER_BUFSIZE \
1696        (ADV_CARRIER_COUNT * sizeof(ADV_CARR_T))
1697
1698#define ADV_CHIP_ASC3550          0x01  /* Ultra-Wide IC */
1699#define ADV_CHIP_ASC38C0800       0x02  /* Ultra2-Wide/LVD IC */
1700#define ADV_CHIP_ASC38C1600       0x03  /* Ultra3-Wide/LVD2 IC */
1701
1702/*
1703 * Adapter temporary configuration structure
1704 *
1705 * This structure can be discarded after initialization. Don't add
1706 * fields here needed after initialization.
1707 *
1708 * Field naming convention:
1709 *
1710 *  *_enable indicates the field enables or disables a feature. The
1711 *  value of the field is never reset.
1712 */
1713typedef struct adv_dvc_cfg {
1714        ushort disc_enable;     /* enable disconnection */
1715        uchar chip_version;     /* chip version */
1716        uchar termination;      /* Term. Ctrl. bits 6-5 of SCSI_CFG1 register */
1717        ushort control_flag;    /* Microcode Control Flag */
1718        ushort mcode_date;      /* Microcode date */
1719        ushort mcode_version;   /* Microcode version */
1720        ushort serial1;         /* EEPROM serial number word 1 */
1721        ushort serial2;         /* EEPROM serial number word 2 */
1722        ushort serial3;         /* EEPROM serial number word 3 */
1723} ADV_DVC_CFG;
1724
1725struct adv_dvc_var;
1726struct adv_scsi_req_q;
1727
1728typedef struct adv_sg_block {
1729        uchar reserved1;
1730        uchar reserved2;
1731        uchar reserved3;
1732        uchar sg_cnt;           /* Valid entries in block. */
1733        __le32 sg_ptr;  /* Pointer to next sg block. */
1734        struct {
1735                __le32 sg_addr; /* SG element address. */
1736                __le32 sg_count;        /* SG element count. */
1737        } sg_list[NO_OF_SG_PER_BLOCK];
1738} ADV_SG_BLOCK;
1739
1740/*
1741 * ADV_SCSI_REQ_Q - microcode request structure
1742 *
1743 * All fields in this structure up to byte 60 are used by the microcode.
1744 * The microcode makes assumptions about the size and ordering of fields
1745 * in this structure. Do not change the structure definition here without
1746 * coordinating the change with the microcode.
1747 *
1748 * All fields accessed by microcode must be maintained in little_endian
1749 * order.
1750 */
1751typedef struct adv_scsi_req_q {
1752        uchar cntl;             /* Ucode flags and state (ASC_MC_QC_*). */
1753        uchar target_cmd;
1754        uchar target_id;        /* Device target identifier. */
1755        uchar target_lun;       /* Device target logical unit number. */
1756        __le32 data_addr;       /* Data buffer physical address. */
1757        __le32 data_cnt;        /* Data count. Ucode sets to residual. */
1758        __le32 sense_addr;
1759        __le32 carr_pa;
1760        uchar mflag;
1761        uchar sense_len;
1762        uchar cdb_len;          /* SCSI CDB length. Must <= 16 bytes. */
1763        uchar scsi_cntl;
1764        uchar done_status;      /* Completion status. */
1765        uchar scsi_status;      /* SCSI status byte. */
1766        uchar host_status;      /* Ucode host status. */
1767        uchar sg_working_ix;
1768        uchar cdb[12];          /* SCSI CDB bytes 0-11. */
1769        __le32 sg_real_addr;    /* SG list physical address. */
1770        __le32 scsiq_rptr;
1771        uchar cdb16[4];         /* SCSI CDB bytes 12-15. */
1772        __le32 scsiq_ptr;
1773        __le32 carr_va;
1774        /*
1775         * End of microcode structure - 60 bytes. The rest of the structure
1776         * is used by the Adv Library and ignored by the microcode.
1777         */
1778        u32 srb_tag;
1779        ADV_SG_BLOCK *sg_list_ptr;      /* SG list virtual address. */
1780} ADV_SCSI_REQ_Q;
1781
1782/*
1783 * The following two structures are used to process Wide Board requests.
1784 *
1785 * The ADV_SCSI_REQ_Q structure in adv_req_t is passed to the Adv Library
1786 * and microcode with the ADV_SCSI_REQ_Q field 'srb_tag' set to the
1787 * SCSI request tag. The adv_req_t structure 'cmndp' field in turn points
1788 * to the Mid-Level SCSI request structure.
1789 *
1790 * Zero or more ADV_SG_BLOCK are used with each ADV_SCSI_REQ_Q. Each
1791 * ADV_SG_BLOCK structure holds 15 scatter-gather elements. Under Linux
1792 * up to 255 scatter-gather elements may be used per request or
1793 * ADV_SCSI_REQ_Q.
1794 *
1795 * Both structures must be 32 byte aligned.
1796 */
1797typedef struct adv_sgblk {
1798        ADV_SG_BLOCK sg_block;  /* Sgblock structure. */
1799        dma_addr_t sg_addr;     /* Physical address */
1800        struct adv_sgblk *next_sgblkp;  /* Next scatter-gather structure. */
1801} adv_sgblk_t;
1802
1803typedef struct adv_req {
1804        ADV_SCSI_REQ_Q scsi_req_q;      /* Adv Library request structure. */
1805        uchar align[24];        /* Request structure padding. */
1806        struct scsi_cmnd *cmndp;        /* Mid-Level SCSI command pointer. */
1807        dma_addr_t req_addr;
1808        adv_sgblk_t *sgblkp;    /* Adv Library scatter-gather pointer. */
1809} adv_req_t __aligned(32);
1810
1811/*
1812 * Adapter operation variable structure.
1813 *
1814 * One structure is required per host adapter.
1815 *
1816 * Field naming convention:
1817 *
1818 *  *_able indicates both whether a feature should be enabled or disabled
1819 *  and whether a device isi capable of the feature. At initialization
1820 *  this field may be set, but later if a device is found to be incapable
1821 *  of the feature, the field is cleared.
1822 */
1823typedef struct adv_dvc_var {
1824        AdvPortAddr iop_base;   /* I/O port address */
1825        ushort err_code;        /* fatal error code */
1826        ushort bios_ctrl;       /* BIOS control word, EEPROM word 12 */
1827        ushort wdtr_able;       /* try WDTR for a device */
1828        ushort sdtr_able;       /* try SDTR for a device */
1829        ushort ultra_able;      /* try SDTR Ultra speed for a device */
1830        ushort sdtr_speed1;     /* EEPROM SDTR Speed for TID 0-3   */
1831        ushort sdtr_speed2;     /* EEPROM SDTR Speed for TID 4-7   */
1832        ushort sdtr_speed3;     /* EEPROM SDTR Speed for TID 8-11  */
1833        ushort sdtr_speed4;     /* EEPROM SDTR Speed for TID 12-15 */
1834        ushort tagqng_able;     /* try tagged queuing with a device */
1835        ushort ppr_able;        /* PPR message capable per TID bitmask. */
1836        uchar max_dvc_qng;      /* maximum number of tagged commands per device */
1837        ushort start_motor;     /* start motor command allowed */
1838        uchar scsi_reset_wait;  /* delay in seconds after scsi bus reset */
1839        uchar chip_no;          /* should be assigned by caller */
1840        uchar max_host_qng;     /* maximum number of Q'ed command allowed */
1841        ushort no_scam;         /* scam_tolerant of EEPROM */
1842        struct asc_board *drv_ptr;      /* driver pointer to private structure */
1843        uchar chip_scsi_id;     /* chip SCSI target ID */
1844        uchar chip_type;
1845        uchar bist_err_code;
1846        ADV_CARR_T *carrier;
1847        ADV_CARR_T *carr_freelist;      /* Carrier free list. */
1848        dma_addr_t carrier_addr;
1849        ADV_CARR_T *icq_sp;     /* Initiator command queue stopper pointer. */
1850        ADV_CARR_T *irq_sp;     /* Initiator response queue stopper pointer. */
1851        ushort carr_pending_cnt;        /* Count of pending carriers. */
1852        /*
1853         * Note: The following fields will not be used after initialization. The
1854         * driver may discard the buffer after initialization is done.
1855         */
1856        ADV_DVC_CFG *cfg;       /* temporary configuration structure  */
1857} ADV_DVC_VAR;
1858
1859/*
1860 * Microcode idle loop commands
1861 */
1862#define IDLE_CMD_COMPLETED           0
1863#define IDLE_CMD_STOP_CHIP           0x0001
1864#define IDLE_CMD_STOP_CHIP_SEND_INT  0x0002
1865#define IDLE_CMD_SEND_INT            0x0004
1866#define IDLE_CMD_ABORT               0x0008
1867#define IDLE_CMD_DEVICE_RESET        0x0010
1868#define IDLE_CMD_SCSI_RESET_START    0x0020     /* Assert SCSI Bus Reset */
1869#define IDLE_CMD_SCSI_RESET_END      0x0040     /* Deassert SCSI Bus Reset */
1870#define IDLE_CMD_SCSIREQ             0x0080
1871
1872#define IDLE_CMD_STATUS_SUCCESS      0x0001
1873#define IDLE_CMD_STATUS_FAILURE      0x0002
1874
1875/*
1876 * AdvSendIdleCmd() flag definitions.
1877 */
1878#define ADV_NOWAIT     0x01
1879
1880/*
1881 * Wait loop time out values.
1882 */
1883#define SCSI_WAIT_100_MSEC           100UL      /* 100 milliseconds */
1884#define SCSI_US_PER_MSEC             1000       /* microseconds per millisecond */
1885#define SCSI_MAX_RETRY               10 /* retry count */
1886
1887#define ADV_ASYNC_RDMA_FAILURE          0x01    /* Fatal RDMA failure. */
1888#define ADV_ASYNC_SCSI_BUS_RESET_DET    0x02    /* Detected SCSI Bus Reset. */
1889#define ADV_ASYNC_CARRIER_READY_FAILURE 0x03    /* Carrier Ready failure. */
1890#define ADV_RDMA_IN_CARR_AND_Q_INVALID  0x04    /* RDMAed-in data invalid. */
1891
1892#define ADV_HOST_SCSI_BUS_RESET      0x80       /* Host Initiated SCSI Bus Reset. */
1893
1894/* Read byte from a register. */
1895#define AdvReadByteRegister(iop_base, reg_off) \
1896     (ADV_MEM_READB((iop_base) + (reg_off)))
1897
1898/* Write byte to a register. */
1899#define AdvWriteByteRegister(iop_base, reg_off, byte) \
1900     (ADV_MEM_WRITEB((iop_base) + (reg_off), (byte)))
1901
1902/* Read word (2 bytes) from a register. */
1903#define AdvReadWordRegister(iop_base, reg_off) \
1904     (ADV_MEM_READW((iop_base) + (reg_off)))
1905
1906/* Write word (2 bytes) to a register. */
1907#define AdvWriteWordRegister(iop_base, reg_off, word) \
1908     (ADV_MEM_WRITEW((iop_base) + (reg_off), (word)))
1909
1910/* Write dword (4 bytes) to a register. */
1911#define AdvWriteDWordRegister(iop_base, reg_off, dword) \
1912     (ADV_MEM_WRITEDW((iop_base) + (reg_off), (dword)))
1913
1914/* Read byte from LRAM. */
1915#define AdvReadByteLram(iop_base, addr, byte) \
1916do { \
1917    ADV_MEM_WRITEW((iop_base) + IOPW_RAM_ADDR, (addr)); \
1918    (byte) = ADV_MEM_READB((iop_base) + IOPB_RAM_DATA); \
1919} while (0)
1920
1921/* Write byte to LRAM. */
1922#define AdvWriteByteLram(iop_base, addr, byte) \
1923    (ADV_MEM_WRITEW((iop_base) + IOPW_RAM_ADDR, (addr)), \
1924     ADV_MEM_WRITEB((iop_base) + IOPB_RAM_DATA, (byte)))
1925
1926/* Read word (2 bytes) from LRAM. */
1927#define AdvReadWordLram(iop_base, addr, word) \
1928do { \
1929    ADV_MEM_WRITEW((iop_base) + IOPW_RAM_ADDR, (addr)); \
1930    (word) = (ADV_MEM_READW((iop_base) + IOPW_RAM_DATA)); \
1931} while (0)
1932
1933/* Write word (2 bytes) to LRAM. */
1934#define AdvWriteWordLram(iop_base, addr, word) \
1935    (ADV_MEM_WRITEW((iop_base) + IOPW_RAM_ADDR, (addr)), \
1936     ADV_MEM_WRITEW((iop_base) + IOPW_RAM_DATA, (word)))
1937
1938/* Write little-endian double word (4 bytes) to LRAM */
1939/* Because of unspecified C language ordering don't use auto-increment. */
1940#define AdvWriteDWordLramNoSwap(iop_base, addr, dword) \
1941    ((ADV_MEM_WRITEW((iop_base) + IOPW_RAM_ADDR, (addr)), \
1942      ADV_MEM_WRITEW((iop_base) + IOPW_RAM_DATA, \
1943                     cpu_to_le16((ushort) ((dword) & 0xFFFF)))), \
1944     (ADV_MEM_WRITEW((iop_base) + IOPW_RAM_ADDR, (addr) + 2), \
1945      ADV_MEM_WRITEW((iop_base) + IOPW_RAM_DATA, \
1946                     cpu_to_le16((ushort) ((dword >> 16) & 0xFFFF)))))
1947
1948/* Read word (2 bytes) from LRAM assuming that the address is already set. */
1949#define AdvReadWordAutoIncLram(iop_base) \
1950     (ADV_MEM_READW((iop_base) + IOPW_RAM_DATA))
1951
1952/* Write word (2 bytes) to LRAM assuming that the address is already set. */
1953#define AdvWriteWordAutoIncLram(iop_base, word) \
1954     (ADV_MEM_WRITEW((iop_base) + IOPW_RAM_DATA, (word)))
1955
1956/*
1957 * Define macro to check for Condor signature.
1958 *
1959 * Evaluate to ADV_TRUE if a Condor chip is found the specified port
1960 * address 'iop_base'. Otherwise evalue to ADV_FALSE.
1961 */
1962#define AdvFindSignature(iop_base) \
1963    (((AdvReadByteRegister((iop_base), IOPB_CHIP_ID_1) == \
1964    ADV_CHIP_ID_BYTE) && \
1965     (AdvReadWordRegister((iop_base), IOPW_CHIP_ID_0) == \
1966    ADV_CHIP_ID_WORD)) ?  ADV_TRUE : ADV_FALSE)
1967
1968/*
1969 * Define macro to Return the version number of the chip at 'iop_base'.
1970 *
1971 * The second parameter 'bus_type' is currently unused.
1972 */
1973#define AdvGetChipVersion(iop_base, bus_type) \
1974    AdvReadByteRegister((iop_base), IOPB_CHIP_TYPE_REV)
1975
1976/*
1977 * Abort an SRB in the chip's RISC Memory. The 'srb_tag' argument must
1978 * match the ADV_SCSI_REQ_Q 'srb_tag' field.
1979 *
1980 * If the request has not yet been sent to the device it will simply be
1981 * aborted from RISC memory. If the request is disconnected it will be
1982 * aborted on reselection by sending an Abort Message to the target ID.
1983 *
1984 * Return value:
1985 *      ADV_TRUE(1) - Queue was successfully aborted.
1986 *      ADV_FALSE(0) - Queue was not found on the active queue list.
1987 */
1988#define AdvAbortQueue(asc_dvc, srb_tag) \
1989     AdvSendIdleCmd((asc_dvc), (ushort) IDLE_CMD_ABORT, \
1990                    (ADV_DCNT) (srb_tag))
1991
1992/*
1993 * Send a Bus Device Reset Message to the specified target ID.
1994 *
1995 * All outstanding commands will be purged if sending the
1996 * Bus Device Reset Message is successful.
1997 *
1998 * Return Value:
1999 *      ADV_TRUE(1) - All requests on the target are purged.
2000 *      ADV_FALSE(0) - Couldn't issue Bus Device Reset Message; Requests

2001 *                     are not purged.
2002 */
2003#define AdvResetDevice(asc_dvc, target_id) \
2004     AdvSendIdleCmd((asc_dvc), (ushort) IDLE_CMD_DEVICE_RESET,  \
2005                    (ADV_DCNT) (target_id))
2006
2007/*
2008 * SCSI Wide Type definition.
2009 */
2010#define ADV_SCSI_BIT_ID_TYPE   ushort
2011
2012/*
2013 * AdvInitScsiTarget() 'cntl_flag' options.
2014 */
2015#define ADV_SCAN_LUN           0x01
2016#define ADV_CAPINFO_NOLUN      0x02
2017
2018/*
2019 * Convert target id to target id bit mask.
2020 */
2021#define ADV_TID_TO_TIDMASK(tid)   (0x01 << ((tid) & ADV_MAX_TID))
2022
2023/*
2024 * ADV_SCSI_REQ_Q 'done_status' and 'host_status' return values.
2025 */
2026
2027#define QD_NO_STATUS         0x00       /* Request not completed yet. */
2028#define QD_NO_ERROR          0x01
2029#define QD_ABORTED_BY_HOST   0x02
2030#define QD_WITH_ERROR        0x04
2031
2032#define QHSTA_NO_ERROR              0x00
2033#define QHSTA_M_SEL_TIMEOUT         0x11
2034#define QHSTA_M_DATA_OVER_RUN       0x12
2035#define QHSTA_M_UNEXPECTED_BUS_FREE 0x13
2036#define QHSTA_M_QUEUE_ABORTED       0x15
2037#define QHSTA_M_SXFR_SDMA_ERR       0x16        /* SXFR_STATUS SCSI DMA Error */
2038#define QHSTA_M_SXFR_SXFR_PERR      0x17        /* SXFR_STATUS SCSI Bus Parity Error */
2039#define QHSTA_M_RDMA_PERR           0x18        /* RISC PCI DMA parity error */
2040#define QHSTA_M_SXFR_OFF_UFLW       0x19        /* SXFR_STATUS Offset Underflow */
2041#define QHSTA_M_SXFR_OFF_OFLW       0x20        /* SXFR_STATUS Offset Overflow */
2042#define QHSTA_M_SXFR_WD_TMO         0x21        /* SXFR_STATUS Watchdog Timeout */
2043#define QHSTA_M_SXFR_DESELECTED     0x22        /* SXFR_STATUS Deselected */
2044/* Note: QHSTA_M_SXFR_XFR_OFLW is identical to QHSTA_M_DATA_OVER_RUN. */
2045#define QHSTA_M_SXFR_XFR_OFLW       0x12        /* SXFR_STATUS Transfer Overflow */
2046#define QHSTA_M_SXFR_XFR_PH_ERR     0x24        /* SXFR_STATUS Transfer Phase Error */
2047#define QHSTA_M_SXFR_UNKNOWN_ERROR  0x25        /* SXFR_STATUS Unknown Error */
2048#define QHSTA_M_SCSI_BUS_RESET      0x30        /* Request aborted from SBR */
2049#define QHSTA_M_SCSI_BUS_RESET_UNSOL 0x31       /* Request aborted from unsol. SBR */
2050#define QHSTA_M_BUS_DEVICE_RESET    0x32        /* Request aborted from BDR */
2051#define QHSTA_M_DIRECTION_ERR       0x35        /* Data Phase mismatch */
2052#define QHSTA_M_DIRECTION_ERR_HUNG  0x36        /* Data Phase mismatch and bus hang */
2053#define QHSTA_M_WTM_TIMEOUT         0x41
2054#define QHSTA_M_BAD_CMPL_STATUS_IN  0x42
2055#define QHSTA_M_NO_AUTO_REQ_SENSE   0x43
2056#define QHSTA_M_AUTO_REQ_SENSE_FAIL 0x44
2057#define QHSTA_M_INVALID_DEVICE      0x45        /* Bad target ID */
2058#define QHSTA_M_FROZEN_TIDQ         0x46        /* TID Queue frozen. */
2059#define QHSTA_M_SGBACKUP_ERROR      0x47        /* Scatter-Gather backup error */
2060
2061/* Return the address that is aligned at the next doubleword >= to 'addr'. */
2062#define ADV_32BALIGN(addr)     (((ulong) (addr) + 0x1F) & ~0x1F)
2063
2064/*
2065 * Total contiguous memory needed for driver SG blocks.
2066 *
2067 * ADV_MAX_SG_LIST must be defined by a driver. It is the maximum
2068 * number of scatter-gather elements the driver supports in a
2069 * single request.
2070 */
2071
2072#define ADV_SG_LIST_MAX_BYTE_SIZE \
2073         (sizeof(ADV_SG_BLOCK) * \
2074          ((ADV_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK))
2075
2076/* struct asc_board flags */
2077#define ASC_IS_WIDE_BOARD       0x04    /* AdvanSys Wide Board */
2078
2079#define ASC_NARROW_BOARD(boardp) (((boardp)->flags & ASC_IS_WIDE_BOARD) == 0)
2080
2081#define NO_ISA_DMA              0xff    /* No ISA DMA Channel Used */
2082
2083#define ASC_INFO_SIZE           128     /* advansys_info() line size */
2084
2085/* Asc Library return codes */
2086#define ASC_TRUE        1
2087#define ASC_FALSE       0
2088#define ASC_NOERROR     1
2089#define ASC_BUSY        0
2090#define ASC_ERROR       (-1)
2091
2092/* struct scsi_cmnd function return codes */
2093#define STATUS_BYTE(byte)   (byte)
2094#define MSG_BYTE(byte)      ((byte) << 8)
2095#define HOST_BYTE(byte)     ((byte) << 16)
2096#define DRIVER_BYTE(byte)   ((byte) << 24)
2097
2098#define ASC_STATS(shost, counter) ASC_STATS_ADD(shost, counter, 1)
2099#ifndef ADVANSYS_STATS
2100#define ASC_STATS_ADD(shost, counter, count)
2101#else /* ADVANSYS_STATS */
2102#define ASC_STATS_ADD(shost, counter, count) \
2103        (((struct asc_board *) shost_priv(shost))->asc_stats.counter += (count))
2104#endif /* ADVANSYS_STATS */
2105
2106/* If the result wraps when calculating tenths, return 0. */
2107#define ASC_TENTHS(num, den) \
2108    (((10 * ((num)/(den))) > (((num) * 10)/(den))) ? \
2109    0 : ((((num) * 10)/(den)) - (10 * ((num)/(den)))))
2110
2111/*
2112 * Display a message to the console.
2113 */
2114#define ASC_PRINT(s) \
2115    { \
2116        printk("advansys: "); \
2117        printk(s); \
2118    }
2119
2120#define ASC_PRINT1(s, a1) \
2121    { \
2122        printk("advansys: "); \
2123        printk((s), (a1)); \
2124    }
2125
2126#define ASC_PRINT2(s, a1, a2) \
2127    { \
2128        printk("advansys: "); \
2129        printk((s), (a1), (a2)); \
2130    }
2131
2132#define ASC_PRINT3(s, a1, a2, a3) \
2133    { \
2134        printk("advansys: "); \
2135        printk((s), (a1), (a2), (a3)); \
2136    }
2137
2138#define ASC_PRINT4(s, a1, a2, a3, a4) \
2139    { \
2140        printk("advansys: "); \
2141        printk((s), (a1), (a2), (a3), (a4)); \
2142    }
2143
2144#ifndef ADVANSYS_DEBUG
2145
2146#define ASC_DBG(lvl, s...)
2147#define ASC_DBG_PRT_SCSI_HOST(lvl, s)
2148#define ASC_DBG_PRT_ASC_SCSI_Q(lvl, scsiqp)
2149#define ASC_DBG_PRT_ADV_SCSI_REQ_Q(lvl, scsiqp)
2150#define ASC_DBG_PRT_ASC_QDONE_INFO(lvl, qdone)
2151#define ADV_DBG_PRT_ADV_SCSI_REQ_Q(lvl, scsiqp)
2152#define ASC_DBG_PRT_HEX(lvl, name, start, length)
2153#define ASC_DBG_PRT_CDB(lvl, cdb, len)
2154#define ASC_DBG_PRT_SENSE(lvl, sense, len)
2155#define ASC_DBG_PRT_INQUIRY(lvl, inq, len)
2156
2157#else /* ADVANSYS_DEBUG */
2158
2159/*
2160 * Debugging Message Levels:
2161 * 0: Errors Only
2162 * 1: High-Level Tracing
2163 * 2-N: Verbose Tracing
2164 */
2165
2166#define ASC_DBG(lvl, format, arg...) {                                  \
2167        if (asc_dbglvl >= (lvl))                                        \
2168                printk(KERN_DEBUG "%s: %s: " format, DRV_NAME,          \
2169                        __func__ , ## arg);                             \
2170}
2171
2172#define ASC_DBG_PRT_SCSI_HOST(lvl, s) \
2173    { \
2174        if (asc_dbglvl >= (lvl)) { \
2175            asc_prt_scsi_host(s); \
2176        } \
2177    }
2178
2179#define ASC_DBG_PRT_ASC_SCSI_Q(lvl, scsiqp) \
2180    { \
2181        if (asc_dbglvl >= (lvl)) { \
2182            asc_prt_asc_scsi_q(scsiqp); \
2183        } \
2184    }
2185
2186#define ASC_DBG_PRT_ASC_QDONE_INFO(lvl, qdone) \
2187    { \
2188        if (asc_dbglvl >= (lvl)) { \
2189            asc_prt_asc_qdone_info(qdone); \
2190        } \
2191    }
2192
2193#define ASC_DBG_PRT_ADV_SCSI_REQ_Q(lvl, scsiqp) \
2194    { \
2195        if (asc_dbglvl >= (lvl)) { \
2196            asc_prt_adv_scsi_req_q(scsiqp); \
2197        } \
2198    }
2199
2200#define ASC_DBG_PRT_HEX(lvl, name, start, length) \
2201    { \
2202        if (asc_dbglvl >= (lvl)) { \
2203            asc_prt_hex((name), (start), (length)); \
2204        } \
2205    }
2206
2207#define ASC_DBG_PRT_CDB(lvl, cdb, len) \
2208        ASC_DBG_PRT_HEX((lvl), "CDB", (uchar *) (cdb), (len));
2209
2210#define ASC_DBG_PRT_SENSE(lvl, sense, len) \
2211        ASC_DBG_PRT_HEX((lvl), "SENSE", (uchar *) (sense), (len));
2212
2213#define ASC_DBG_PRT_INQUIRY(lvl, inq, len) \
2214        ASC_DBG_PRT_HEX((lvl), "INQUIRY", (uchar *) (inq), (len));
2215#endif /* ADVANSYS_DEBUG */
2216
2217#ifdef ADVANSYS_STATS
2218
2219/* Per board statistics structure */
2220struct asc_stats {
2221        /* Driver Entrypoint Statistics */
2222        unsigned int queuecommand;      /* # calls to advansys_queuecommand() */
2223        unsigned int reset;             /* # calls to advansys_eh_bus_reset() */
2224        unsigned int biosparam; /* # calls to advansys_biosparam() */
2225        unsigned int interrupt; /* # advansys_interrupt() calls */
2226        unsigned int callback;  /* # calls to asc/adv_isr_callback() */
2227        unsigned int done;              /* # calls to request's scsi_done function */
2228        unsigned int build_error;       /* # asc/adv_build_req() ASC_ERROR returns. */
2229        unsigned int adv_build_noreq;   /* # adv_build_req() adv_req_t alloc. fail. */
2230        unsigned int adv_build_nosg;    /* # adv_build_req() adv_sgblk_t alloc. fail. */
2231        /* AscExeScsiQueue()/AdvExeScsiQueue() Statistics */
2232        unsigned int exe_noerror;       /* # ASC_NOERROR returns. */
2233        unsigned int exe_busy;  /* # ASC_BUSY returns. */
2234        unsigned int exe_error; /* # ASC_ERROR returns. */
2235        unsigned int exe_unknown;       /* # unknown returns. */
2236        /* Data Transfer Statistics */
2237        unsigned int xfer_cnt;  /* # I/O requests received */
2238        unsigned int xfer_elem; /* # scatter-gather elements */
2239        unsigned int xfer_sect; /* # 512-byte blocks */
2240};
2241#endif /* ADVANSYS_STATS */
2242
2243/*
2244 * Structure allocated for each board.
2245 *
2246 * This structure is allocated by scsi_host_alloc() at the end
2247 * of the 'Scsi_Host' structure starting at the 'hostdata'
2248 * field. It is guaranteed to be allocated from DMA-able memory.
2249 */
2250struct asc_board {
2251        struct device *dev;
2252        struct Scsi_Host *shost;
2253        uint flags;             /* Board flags */
2254        unsigned int irq;
2255        union {
2256                ASC_DVC_VAR asc_dvc_var;        /* Narrow board */
2257                ADV_DVC_VAR adv_dvc_var;        /* Wide board */
2258        } dvc_var;
2259        union {
2260                ASC_DVC_CFG asc_dvc_cfg;        /* Narrow board */
2261                ADV_DVC_CFG adv_dvc_cfg;        /* Wide board */
2262        } dvc_cfg;
2263        ushort asc_n_io_port;   /* Number I/O ports. */
2264        ADV_SCSI_BIT_ID_TYPE init_tidmask;      /* Target init./valid mask */
2265        ushort reqcnt[ADV_MAX_TID + 1]; /* Starvation request count */
2266        ADV_SCSI_BIT_ID_TYPE queue_full;        /* Queue full mask */
2267        ushort queue_full_cnt[ADV_MAX_TID + 1]; /* Queue full count */
2268        union {
2269                ASCEEP_CONFIG asc_eep;  /* Narrow EEPROM config. */
2270                ADVEEP_3550_CONFIG adv_3550_eep;        /* 3550 EEPROM config. */
2271                ADVEEP_38C0800_CONFIG adv_38C0800_eep;  /* 38C0800 EEPROM config. */
2272                ADVEEP_38C1600_CONFIG adv_38C1600_eep;  /* 38C1600 EEPROM config. */
2273        } eep_config;
2274        /* /proc/scsi/advansys/[0...] */
2275#ifdef ADVANSYS_STATS
2276        struct asc_stats asc_stats;     /* Board statistics */
2277#endif                          /* ADVANSYS_STATS */
2278        /*
2279         * The following fields are used only for Narrow Boards.
2280         */
2281        uchar sdtr_data[ASC_MAX_TID + 1];       /* SDTR information */
2282        /*
2283         * The following fields are used only for Wide Boards.
2284         */
2285        void __iomem *ioremap_addr;     /* I/O Memory remap address. */
2286        ushort ioport;          /* I/O Port address. */
2287        adv_req_t *adv_reqp;    /* Request structures. */
2288        dma_addr_t adv_reqp_addr;
2289        size_t adv_reqp_size;
2290        struct dma_pool *adv_sgblk_pool;        /* Scatter-gather structures. */
2291        ushort bios_signature;  /* BIOS Signature. */
2292        ushort bios_version;    /* BIOS Version. */
2293        ushort bios_codeseg;    /* BIOS Code Segment. */
2294        ushort bios_codelen;    /* BIOS Code Segment Length. */
2295};
2296
2297#define asc_dvc_to_board(asc_dvc) container_of(asc_dvc, struct asc_board, \
2298                                                        dvc_var.asc_dvc_var)
2299#define adv_dvc_to_board(adv_dvc) container_of(adv_dvc, struct asc_board, \
2300                                                        dvc_var.adv_dvc_var)
2301#define adv_dvc_to_pdev(adv_dvc) to_pci_dev(adv_dvc_to_board(adv_dvc)->dev)
2302
2303#ifdef ADVANSYS_DEBUG
2304static int asc_dbglvl = 3;
2305
2306/*
2307 * asc_prt_asc_dvc_var()
2308 */
2309static void asc_prt_asc_dvc_var(ASC_DVC_VAR *h)
2310{
2311        printk("ASC_DVC_VAR at addr 0x%lx\n", (ulong)h);
2312
2313        printk(" iop_base 0x%x, err_code 0x%x, dvc_cntl 0x%x, bug_fix_cntl "
2314               "%d,\n", h->iop_base, h->err_code, h->dvc_cntl, h->bug_fix_cntl);
2315
2316        printk(" bus_type %d, init_sdtr 0x%x,\n", h->bus_type,
2317                (unsigned)h->init_sdtr);
2318
2319        printk(" sdtr_done 0x%x, use_tagged_qng 0x%x, unit_not_ready 0x%x, "
2320               "chip_no 0x%x,\n", (unsigned)h->sdtr_done,
2321               (unsigned)h->use_tagged_qng, (unsigned)h->unit_not_ready,
2322               (unsigned)h->chip_no);
2323
2324        printk(" queue_full_or_busy 0x%x, start_motor 0x%x, scsi_reset_wait "
2325               "%u,\n", (unsigned)h->queue_full_or_busy,
2326               (unsigned)h->start_motor, (unsigned)h->scsi_reset_wait);
2327
2328        printk(" is_in_int %u, max_total_qng %u, cur_total_qng %u, "
2329               "in_critical_cnt %u,\n", (unsigned)h->is_in_int,
2330               (unsigned)h->max_total_qng, (unsigned)h->cur_total_qng,
2331               (unsigned)h->in_critical_cnt);
2332
2333        printk(" last_q_shortage %u, init_state 0x%x, no_scam 0x%x, "
2334               "pci_fix_asyn_xfer 0x%x,\n", (unsigned)h->last_q_shortage,
2335               (unsigned)h->init_state, (unsigned)h->no_scam,
2336               (unsigned)h->pci_fix_asyn_xfer);
2337
2338        printk(" cfg 0x%lx\n", (ulong)h->cfg);
2339}
2340
2341/*
2342 * asc_prt_asc_dvc_cfg()
2343 */
2344static void asc_prt_asc_dvc_cfg(ASC_DVC_CFG *h)
2345{
2346        printk("ASC_DVC_CFG at addr 0x%lx\n", (ulong)h);
2347
2348        printk(" can_tagged_qng 0x%x, cmd_qng_enabled 0x%x,\n",
2349               h->can_tagged_qng, h->cmd_qng_enabled);
2350        printk(" disc_enable 0x%x, sdtr_enable 0x%x,\n",
2351               h->disc_enable, h->sdtr_enable);
2352
2353        printk(" chip_scsi_id %d, isa_dma_speed %d, isa_dma_channel %d, "
2354                "chip_version %d,\n", h->chip_scsi_id, h->isa_dma_speed,
2355                h->isa_dma_channel, h->chip_version);
2356
2357        printk(" mcode_date 0x%x, mcode_version %d\n",
2358                h->mcode_date, h->mcode_version);
2359}
2360
2361/*
2362 * asc_prt_adv_dvc_var()
2363 *
2364 * Display an ADV_DVC_VAR structure.
2365 */
2366static void asc_prt_adv_dvc_var(ADV_DVC_VAR *h)
2367{
2368        printk(" ADV_DVC_VAR at addr 0x%lx\n", (ulong)h);
2369
2370        printk("  iop_base 0x%lx, err_code 0x%x, ultra_able 0x%x\n",
2371               (ulong)h->iop_base, h->err_code, (unsigned)h->ultra_able);
2372
2373        printk("  sdtr_able 0x%x, wdtr_able 0x%x\n",
2374               (unsigned)h->sdtr_able, (unsigned)h->wdtr_able);
2375
2376        printk("  start_motor 0x%x, scsi_reset_wait 0x%x\n",
2377               (unsigned)h->start_motor, (unsigned)h->scsi_reset_wait);
2378
2379        printk("  max_host_qng %u, max_dvc_qng %u, carr_freelist 0x%p\n",
2380               (unsigned)h->max_host_qng, (unsigned)h->max_dvc_qng,
2381               h->carr_freelist);
2382
2383        printk("  icq_sp 0x%p, irq_sp 0x%p\n", h->icq_sp, h->irq_sp);
2384
2385        printk("  no_scam 0x%x, tagqng_able 0x%x\n",
2386               (unsigned)h->no_scam, (unsigned)h->tagqng_able);
2387
2388        printk("  chip_scsi_id 0x%x, cfg 0x%lx\n",
2389               (unsigned)h->chip_scsi_id, (ulong)h->cfg);
2390}
2391
2392/*
2393 * asc_prt_adv_dvc_cfg()
2394 *
2395 * Display an ADV_DVC_CFG structure.
2396 */
2397static void asc_prt_adv_dvc_cfg(ADV_DVC_CFG *h)
2398{
2399        printk(" ADV_DVC_CFG at addr 0x%lx\n", (ulong)h);
2400
2401        printk("  disc_enable 0x%x, termination 0x%x\n",
2402               h->disc_enable, h->termination);
2403
2404        printk("  chip_version 0x%x, mcode_date 0x%x\n",
2405               h->chip_version, h->mcode_date);
2406
2407        printk("  mcode_version 0x%x, control_flag 0x%x\n",
2408               h->mcode_version, h->control_flag);
2409}
2410
2411/*
2412 * asc_prt_scsi_host()
2413 */
2414static void asc_prt_scsi_host(struct Scsi_Host *s)
2415{
2416        struct asc_board *boardp = shost_priv(s);
2417
2418        printk("Scsi_Host at addr 0x%p, device %s\n", s, dev_name(boardp->dev));
2419        printk(" host_busy %d, host_no %d,\n",
2420               scsi_host_busy(s), s->host_no);
2421
2422        printk(" base 0x%lx, io_port 0x%lx, irq %d,\n",
2423               (ulong)s->base, (ulong)s->io_port, boardp->irq);
2424
2425        printk(" dma_channel %d, this_id %d, can_queue %d,\n",
2426               s->dma_channel, s->this_id, s->can_queue);
2427
2428        printk(" cmd_per_lun %d, sg_tablesize %d, unchecked_isa_dma %d\n",
2429               s->cmd_per_lun, s->sg_tablesize, s->unchecked_isa_dma);
2430
2431        if (ASC_NARROW_BOARD(boardp)) {
2432                asc_prt_asc_dvc_var(&boardp->dvc_var.asc_dvc_var);
2433                asc_prt_asc_dvc_cfg(&boardp->dvc_cfg.asc_dvc_cfg);
2434        } else {
2435                asc_prt_adv_dvc_var(&boardp->dvc_var.adv_dvc_var);
2436                asc_prt_adv_dvc_cfg(&boardp->dvc_cfg.adv_dvc_cfg);
2437        }
2438}
2439
2440/*
2441 * asc_prt_hex()
2442 *
2443 * Print hexadecimal output in 4 byte groupings 32 bytes
2444 * or 8 double-words per line.
2445 */
2446static void asc_prt_hex(char *f, uchar *s, int l)
2447{
2448        int i;
2449        int j;
2450        int k;
2451        int m;
2452
2453        printk("%s: (%d bytes)\n", f, l);
2454
2455        for (i = 0; i < l; i += 32) {
2456
2457                /* Display a maximum of 8 double-words per line. */
2458                if ((k = (l - i) / 4) >= 8) {
2459                        k = 8;
2460                        m = 0;
2461                } else {
2462                        m = (l - i) % 4;
2463                }
2464
2465                for (j = 0; j < k; j++) {
2466                        printk(" %2.2X%2.2X%2.2X%2.2X",
2467                               (unsigned)s[i + (j * 4)],
2468                               (unsigned)s[i + (j * 4) + 1],
2469                               (unsigned)s[i + (j * 4) + 2],
2470                               (unsigned)s[i + (j * 4) + 3]);
2471                }
2472
2473                switch (m) {
2474                case 0:
2475                default:
2476                        break;
2477                case 1:
2478                        printk(" %2.2X", (unsigned)s[i + (j * 4)]);
2479                        break;
2480                case 2:
2481                        printk(" %2.2X%2.2X",
2482                               (unsigned)s[i + (j * 4)],
2483                               (unsigned)s[i + (j * 4) + 1]);
2484                        break;
2485                case 3:
2486                        printk(" %2.2X%2.2X%2.2X",
2487                               (unsigned)s[i + (j * 4) + 1],
2488                               (unsigned)s[i + (j * 4) + 2],
2489                               (unsigned)s[i + (j * 4) + 3]);
2490                        break;
2491                }
2492
2493                printk("\n");
2494        }
2495}
2496
2497/*
2498 * asc_prt_asc_scsi_q()
2499 */
2500static void asc_prt_asc_scsi_q(ASC_SCSI_Q *q)
2501{
2502        ASC_SG_HEAD *sgp;
2503        int i;
2504
2505        printk("ASC_SCSI_Q at addr 0x%lx\n", (ulong)q);
2506
2507        printk
2508            (" target_ix 0x%x, target_lun %u, srb_tag 0x%x, tag_code 0x%x,\n",
2509             q->q2.target_ix, q->q1.target_lun, q->q2.srb_tag,
2510             q->q2.tag_code);
2511
2512        printk
2513            (" data_addr 0x%lx, data_cnt %lu, sense_addr 0x%lx, sense_len %u,\n",
2514             (ulong)le32_to_cpu(q->q1.data_addr),
2515             (ulong)le32_to_cpu(q->q1.data_cnt),
2516             (ulong)le32_to_cpu(q->q1.sense_addr), q->q1.sense_len);
2517
2518        printk(" cdbptr 0x%lx, cdb_len %u, sg_head 0x%lx, sg_queue_cnt %u\n",
2519               (ulong)q->cdbptr, q->q2.cdb_len,
2520               (ulong)q->sg_head, q->q1.sg_queue_cnt);
2521
2522        if (q->sg_head) {
2523                sgp = q->sg_head;
2524                printk("ASC_SG_HEAD at addr 0x%lx\n", (ulong)sgp);
2525                printk(" entry_cnt %u, queue_cnt %u\n", sgp->entry_cnt,
2526                       sgp->queue_cnt);
2527                for (i = 0; i < sgp->entry_cnt; i++) {
2528                        printk(" [%u]: addr 0x%lx, bytes %lu\n",
2529                               i, (ulong)le32_to_cpu(sgp->sg_list[i].addr),
2530                               (ulong)le32_to_cpu(sgp->sg_list[i].bytes));
2531                }
2532
2533        }
2534}
2535
2536/*
2537 * asc_prt_asc_qdone_info()
2538 */
2539static void asc_prt_asc_qdone_info(ASC_QDONE_INFO *q)
2540{
2541        printk("ASC_QDONE_INFO at addr 0x%lx\n", (ulong)q);
2542        printk(" srb_tag 0x%x, target_ix %u, cdb_len %u, tag_code %u,\n",
2543               q->d2.srb_tag, q->d2.target_ix, q->d2.cdb_len,
2544               q->d2.tag_code);
2545        printk
2546            (" done_stat 0x%x, host_stat 0x%x, scsi_stat 0x%x, scsi_msg 0x%x\n",
2547             q->d3.done_stat, q->d3.host_stat, q->d3.scsi_stat, q->d3.scsi_msg);
2548}
2549
2550/*
2551 * asc_prt_adv_sgblock()
2552 *
2553 * Display an ADV_SG_BLOCK structure.
2554 */
2555static void asc_prt_adv_sgblock(int sgblockno, ADV_SG_BLOCK *b)
2556{
2557        int i;
2558
2559        printk(" ADV_SG_BLOCK at addr 0x%lx (sgblockno %d)\n",
2560               (ulong)b, sgblockno);
2561        printk("  sg_cnt %u, sg_ptr 0x%x\n",
2562               b->sg_cnt, (u32)le32_to_cpu(b->sg_ptr));
2563        BUG_ON(b->sg_cnt > NO_OF_SG_PER_BLOCK);
2564        if (b->sg_ptr != 0)
2565                BUG_ON(b->sg_cnt != NO_OF_SG_PER_BLOCK);
2566        for (i = 0; i < b->sg_cnt; i++) {
2567                printk("  [%u]: sg_addr 0x%x, sg_count 0x%x\n",
2568                       i, (u32)le32_to_cpu(b->sg_list[i].sg_addr),
2569                       (u32)le32_to_cpu(b->sg_list[i].sg_count));
2570        }
2571}
2572
2573/*
2574 * asc_prt_adv_scsi_req_q()
2575 *
2576 * Display an ADV_SCSI_REQ_Q structure.
2577 */
2578static void asc_prt_adv_scsi_req_q(ADV_SCSI_REQ_Q *q)
2579{
2580        int sg_blk_cnt;
2581        struct adv_sg_block *sg_ptr;
2582        adv_sgblk_t *sgblkp;
2583
2584        printk("ADV_SCSI_REQ_Q at addr 0x%lx\n", (ulong)q);
2585
2586        printk("  target_id %u, target_lun %u, srb_tag 0x%x\n",
2587               q->target_id, q->target_lun, q->srb_tag);
2588
2589        printk("  cntl 0x%x, data_addr 0x%lx\n",
2590               q->cntl, (ulong)le32_to_cpu(q->data_addr));
2591
2592        printk("  data_cnt %lu, sense_addr 0x%lx, sense_len %u,\n",
2593               (ulong)le32_to_cpu(q->data_cnt),
2594               (ulong)le32_to_cpu(q->sense_addr), q->sense_len);
2595
2596        printk
2597            ("  cdb_len %u, done_status 0x%x, host_status 0x%x, scsi_status 0x%x\n",
2598             q->cdb_len, q->done_status, q->host_status, q->scsi_status);
2599
2600        printk("  sg_working_ix 0x%x, target_cmd %u\n",
2601               q->sg_working_ix, q->target_cmd);
2602
2603        printk("  scsiq_rptr 0x%lx, sg_real_addr 0x%lx, sg_list_ptr 0x%lx\n",
2604               (ulong)le32_to_cpu(q->scsiq_rptr),
2605               (ulong)le32_to_cpu(q->sg_real_addr), (ulong)q->sg_list_ptr);
2606
2607        /* Display the request's ADV_SG_BLOCK structures. */
2608        if (q->sg_list_ptr != NULL) {
2609                sgblkp = container_of(q->sg_list_ptr, adv_sgblk_t, sg_block);
2610                sg_blk_cnt = 0;
2611                while (sgblkp) {
2612                        sg_ptr = &sgblkp->sg_block;
2613                        asc_prt_adv_sgblock(sg_blk_cnt, sg_ptr);
2614                        if (sg_ptr->sg_ptr == 0) {
2615                                break;
2616                        }
2617                        sgblkp = sgblkp->next_sgblkp;
2618                        sg_blk_cnt++;
2619                }
2620        }
2621}
2622#endif /* ADVANSYS_DEBUG */
2623
2624/*
2625 * advansys_info()
2626 *
2627 * Return suitable for printing on the console with the argument
2628 * adapter's configuration information.
2629 *
2630 * Note: The information line should not exceed ASC_INFO_SIZE bytes,
2631 * otherwise the static 'info' array will be overrun.
2632 */
2633static const char *advansys_info(struct Scsi_Host *shost)
2634{
2635        static char info[ASC_INFO_SIZE];
2636        struct asc_board *boardp = shost_priv(shost);
2637        ASC_DVC_VAR *asc_dvc_varp;
2638        ADV_DVC_VAR *adv_dvc_varp;
2639        char *busname;
2640        char *widename = NULL;
2641
2642        if (ASC_NARROW_BOARD(boardp)) {
2643                asc_dvc_varp = &boardp->dvc_var.asc_dvc_var;
2644                ASC_DBG(1, "begin\n");
2645                if (asc_dvc_varp->bus_type & ASC_IS_ISA) {
2646                        if ((asc_dvc_varp->bus_type & ASC_IS_ISAPNP) ==
2647                            ASC_IS_ISAPNP) {
2648                                busname = "ISA PnP";
2649                        } else {
2650                                busname = "ISA";
2651                        }
2652                        sprintf(info,
2653                                "AdvanSys SCSI %s: %s: IO 0x%lX-0x%lX, IRQ 0x%X, DMA 0x%X",
2654                                ASC_VERSION, busname,
2655                                (ulong)shost->io_port,
2656                                (ulong)shost->io_port + ASC_IOADR_GAP - 1,
2657                                boardp->irq, shost->dma_channel);
2658                } else {
2659                        if (asc_dvc_varp->bus_type & ASC_IS_VL) {
2660                                busname = "VL";
2661                        } else if (asc_dvc_varp->bus_type & ASC_IS_EISA) {
2662                                busname = "EISA";
2663                        } else if (asc_dvc_varp->bus_type & ASC_IS_PCI) {
2664                                if ((asc_dvc_varp->bus_type & ASC_IS_PCI_ULTRA)
2665                                    == ASC_IS_PCI_ULTRA) {
2666                                        busname = "PCI Ultra";
2667                                } else {
2668                                        busname = "PCI";
2669                                }
2670                        } else {
2671                                busname = "?";
2672                                shost_printk(KERN_ERR, shost, "unknown bus "
2673                                        "type %d\n", asc_dvc_varp->bus_type);
2674                        }
2675                        sprintf(info,
2676                                "AdvanSys SCSI %s: %s: IO 0x%lX-0x%lX, IRQ 0x%X",
2677                                ASC_VERSION, busname, (ulong)shost->io_port,
2678                                (ulong)shost->io_port + ASC_IOADR_GAP - 1,
2679                                boardp->irq);
2680                }
2681        } else {
2682                /*
2683                 * Wide Adapter Information
2684                 *
2685                 * Memory-mapped I/O is used instead of I/O space to access
2686                 * the adapter, but display the I/O Port range. The Memory
2687                 * I/O address is displayed through the driver /proc file.
2688                 */
2689                adv_dvc_varp = &boardp->dvc_var.adv_dvc_var;
2690                if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
2691                        widename = "Ultra-Wide";
2692                } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
2693                        widename = "Ultra2-Wide";
2694                } else {
2695                        widename = "Ultra3-Wide";
2696                }
2697                sprintf(info,
2698                        "AdvanSys SCSI %s: PCI %s: PCIMEM 0x%lX-0x%lX, IRQ 0x%X",
2699                        ASC_VERSION, widename, (ulong)adv_dvc_varp->iop_base,
2700                        (ulong)adv_dvc_varp->iop_base + boardp->asc_n_io_port - 1, boardp->irq);
2701        }
2702        BUG_ON(strlen(info) >= ASC_INFO_SIZE);
2703        ASC_DBG(1, "end\n");
2704        return info;
2705}
2706
2707#ifdef CONFIG_PROC_FS
2708
2709/*
2710 * asc_prt_board_devices()
2711 *
2712 * Print driver information for devices attached to the board.
2713 */
2714static void asc_prt_board_devices(struct seq_file *m, struct Scsi_Host *shost)
2715{
2716        struct asc_board *boardp = shost_priv(shost);
2717        int chip_scsi_id;
2718        int i;
2719
2720        seq_printf(m,
2721                   "\nDevice Information for AdvanSys SCSI Host %d:\n",
2722                   shost->host_no);
2723
2724        if (ASC_NARROW_BOARD(boardp)) {
2725                chip_scsi_id = boardp->dvc_cfg.asc_dvc_cfg.chip_scsi_id;
2726        } else {
2727                chip_scsi_id = boardp->dvc_var.adv_dvc_var.chip_scsi_id;
2728        }
2729
2730        seq_puts(m, "Target IDs Detected:");
2731        for (i = 0; i <= ADV_MAX_TID; i++) {
2732                if (boardp->init_tidmask & ADV_TID_TO_TIDMASK(i))
2733                        seq_printf(m, " %X,", i);
2734        }
2735        seq_printf(m, " (%X=Host Adapter)\n", chip_scsi_id);
2736}
2737
2738/*
2739 * Display Wide Board BIOS Information.
2740 */
2741static void asc_prt_adv_bios(struct seq_file *m, struct Scsi_Host *shost)
2742{
2743        struct asc_board *boardp = shost_priv(shost);
2744        ushort major, minor, letter;
2745
2746        seq_puts(m, "\nROM BIOS Version: ");
2747
2748        /*
2749         * If the BIOS saved a valid signature, then fill in
2750         * the BIOS code segment base address.
2751         */
2752        if (boardp->bios_signature != 0x55AA) {
2753                seq_puts(m, "Disabled or Pre-3.1\n"
2754                        "BIOS either disabled or Pre-3.1. If it is pre-3.1, then a newer version\n"
2755                        "can be found at the ConnectCom FTP site: ftp://ftp.connectcom.net/pub\n");
2756        } else {
2757                major = (boardp->bios_version >> 12) & 0xF;
2758                minor = (boardp->bios_version >> 8) & 0xF;
2759                letter = (boardp->bios_version & 0xFF);
2760
2761                seq_printf(m, "%d.%d%c\n",
2762                                   major, minor,
2763                                   letter >= 26 ? '?' : letter + 'A');
2764                /*
2765                 * Current available ROM BIOS release is 3.1I for UW
2766                 * and 3.2I for U2W. This code doesn't differentiate
2767                 * UW and U2W boards.
2768                 */
2769                if (major < 3 || (major <= 3 && minor < 1) ||
2770                    (major <= 3 && minor <= 1 && letter < ('I' - 'A'))) {
2771                        seq_puts(m, "Newer version of ROM BIOS is available at the ConnectCom FTP site:\n"
2772                                "ftp://ftp.connectcom.net/pub\n");
2773                }
2774        }
2775}
2776
2777/*
2778 * Add serial number to information bar if signature AAh
2779 * is found in at bit 15-9 (7 bits) of word 1.
2780 *
2781 * Serial Number consists fo 12 alpha-numeric digits.
2782 *
2783 *       1 - Product type (A,B,C,D..)  Word0: 15-13 (3 bits)
2784 *       2 - MFG Location (A,B,C,D..)  Word0: 12-10 (3 bits)
2785 *     3-4 - Product ID (0-99)         Word0: 9-0 (10 bits)
2786 *       5 - Product revision (A-J)    Word0:  "         "
2787 *
2788 *           Signature                 Word1: 15-9 (7 bits)
2789 *       6 - Year (0-9)                Word1: 8-6 (3 bits) & Word2: 15 (1 bit)
2790 *     7-8 - Week of the year (1-52)   Word1: 5-0 (6 bits)
2791 *
2792 *    9-12 - Serial Number (A001-Z999) Word2: 14-0 (15 bits)
2793 *
2794 * Note 1: Only production cards will have a serial number.
2795 *
2796 * Note 2: Signature is most significant 7 bits (0xFE).
2797 *
2798 * Returns ASC_TRUE if serial number found, otherwise returns ASC_FALSE.
2799 */
2800static int asc_get_eeprom_string(ushort *serialnum, uchar *cp)
2801{
2802        ushort w, num;
2803
2804        if ((serialnum[1] & 0xFE00) != ((ushort)0xAA << 8)) {
2805                return ASC_FALSE;
2806        } else {
2807                /*
2808                 * First word - 6 digits.
2809                 */
2810                w = serialnum[0];
2811
2812                /* Product type - 1st digit. */
2813                if ((*cp = 'A' + ((w & 0xE000) >> 13)) == 'H') {
2814                        /* Product type is P=Prototype */
2815                        *cp += 0x8;
2816                }
2817                cp++;
2818
2819                /* Manufacturing location - 2nd digit. */
2820                *cp++ = 'A' + ((w & 0x1C00) >> 10);
2821
2822                /* Product ID - 3rd, 4th digits. */
2823                num = w & 0x3FF;
2824                *cp++ = '0' + (num / 100);
2825                num %= 100;
2826                *cp++ = '0' + (num / 10);
2827
2828                /* Product revision - 5th digit. */
2829                *cp++ = 'A' + (num % 10);
2830
2831                /*
2832                 * Second word
2833                 */
2834                w = serialnum[1];
2835
2836                /*
2837                 * Year - 6th digit.
2838                 *
2839                 * If bit 15 of third word is set, then the
2840                 * last digit of the year is greater than 7.
2841                 */
2842                if (serialnum[2] & 0x8000) {
2843                        *cp++ = '8' + ((w & 0x1C0) >> 6);
2844                } else {
2845                        *cp++ = '0' + ((w & 0x1C0) >> 6);
2846                }
2847
2848                /* Week of year - 7th, 8th digits. */
2849                num = w & 0x003F;
2850                *cp++ = '0' + num / 10;
2851                num %= 10;
2852                *cp++ = '0' + num;
2853
2854                /*
2855                 * Third word
2856                 */
2857                w = serialnum[2] & 0x7FFF;
2858
2859                /* Serial number - 9th digit. */
2860                *cp++ = 'A' + (w / 1000);
2861
2862                /* 10th, 11th, 12th digits. */
2863                num = w % 1000;
2864                *cp++ = '0' + num / 100;
2865                num %= 100;
2866                *cp++ = '0' + num / 10;
2867                num %= 10;
2868                *cp++ = '0' + num;
2869
2870                *cp = '\0';     /* Null Terminate the string. */
2871                return ASC_TRUE;
2872        }
2873}
2874
2875/*
2876 * asc_prt_asc_board_eeprom()
2877 *
2878 * Print board EEPROM configuration.
2879 */
2880static void asc_prt_asc_board_eeprom(struct seq_file *m, struct Scsi_Host *shost)
2881{
2882        struct asc_board *boardp = shost_priv(shost);
2883        ASC_DVC_VAR *asc_dvc_varp;
2884        ASCEEP_CONFIG *ep;
2885        int i;
2886#ifdef CONFIG_ISA
2887        int isa_dma_speed[] = { 10, 8, 7, 6, 5, 4, 3, 2 };
2888#endif /* CONFIG_ISA */
2889        uchar serialstr[13];
2890
2891        asc_dvc_varp = &boardp->dvc_var.asc_dvc_var;
2892        ep = &boardp->eep_config.asc_eep;
2893
2894        seq_printf(m,
2895                   "\nEEPROM Settings for AdvanSys SCSI Host %d:\n",
2896                   shost->host_no);
2897
2898        if (asc_get_eeprom_string((ushort *)&ep->adapter_info[0], serialstr)
2899            == ASC_TRUE)
2900                seq_printf(m, " Serial Number: %s\n", serialstr);
2901        else if (ep->adapter_info[5] == 0xBB)
2902                seq_puts(m,
2903                         " Default Settings Used for EEPROM-less Adapter.\n");
2904        else
2905                seq_puts(m, " Serial Number Signature Not Present.\n");
2906
2907        seq_printf(m,
2908                   " Host SCSI ID: %u, Host Queue Size: %u, Device Queue Size: %u\n",
2909                   ASC_EEP_GET_CHIP_ID(ep), ep->max_total_qng,
2910                   ep->max_tag_qng);
2911
2912        seq_printf(m,
2913                   " cntl 0x%x, no_scam 0x%x\n", ep->cntl, ep->no_scam);
2914
2915        seq_puts(m, " Target ID:           ");
2916        for (i = 0; i <= ASC_MAX_TID; i++)
2917                seq_printf(m, " %d", i);
2918
2919        seq_puts(m, "\n Disconnects:         ");
2920        for (i = 0; i <= ASC_MAX_TID; i++)
2921                seq_printf(m, " %c",
2922                           (ep->disc_enable & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
2923
2924        seq_puts(m, "\n Command Queuing:     ");
2925        for (i = 0; i <= ASC_MAX_TID; i++)
2926                seq_printf(m, " %c",
2927                           (ep->use_cmd_qng & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
2928
2929        seq_puts(m, "\n Start Motor:         ");
2930        for (i = 0; i <= ASC_MAX_TID; i++)
2931                seq_printf(m, " %c",
2932                           (ep->start_motor & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
2933
2934        seq_puts(m, "\n Synchronous Transfer:");
2935        for (i = 0; i <= ASC_MAX_TID; i++)
2936                seq_printf(m, " %c",
2937                           (ep->init_sdtr & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
2938        seq_putc(m, '\n');
2939
2940#ifdef CONFIG_ISA
2941        if (asc_dvc_varp->bus_type & ASC_IS_ISA) {
2942                seq_printf(m,
2943                           " Host ISA DMA speed:   %d MB/S\n",
2944                           isa_dma_speed[ASC_EEP_GET_DMA_SPD(ep)]);
2945        }
2946#endif /* CONFIG_ISA */
2947}
2948
2949/*
2950 * asc_prt_adv_board_eeprom()
2951 *
2952 * Print board EEPROM configuration.
2953 */
2954static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost)
2955{
2956        struct asc_board *boardp = shost_priv(shost);
2957        ADV_DVC_VAR *adv_dvc_varp;
2958        int i;
2959        char *termstr;
2960        uchar serialstr[13];
2961        ADVEEP_3550_CONFIG *ep_3550 = NULL;
2962        ADVEEP_38C0800_CONFIG *ep_38C0800 = NULL;
2963        ADVEEP_38C1600_CONFIG *ep_38C1600 = NULL;
2964        ushort word;
2965        ushort *wordp;
2966        ushort sdtr_speed = 0;
2967
2968        adv_dvc_varp = &boardp->dvc_var.adv_dvc_var;
2969        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
2970                ep_3550 = &boardp->eep_config.adv_3550_eep;
2971        } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
2972                ep_38C0800 = &boardp->eep_config.adv_38C0800_eep;
2973        } else {
2974                ep_38C1600 = &boardp->eep_config.adv_38C1600_eep;
2975        }
2976
2977        seq_printf(m,
2978                   "\nEEPROM Settings for AdvanSys SCSI Host %d:\n",
2979                   shost->host_no);
2980
2981        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
2982                wordp = &ep_3550->serial_number_word1;
2983        } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
2984                wordp = &ep_38C0800->serial_number_word1;
2985        } else {
2986                wordp = &ep_38C1600->serial_number_word1;
2987        }
2988
2989        if (asc_get_eeprom_string(wordp, serialstr) == ASC_TRUE)
2990                seq_printf(m, " Serial Number: %s\n", serialstr);
2991        else
2992                seq_puts(m, " Serial Number Signature Not Present.\n");
2993
2994        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550)
2995                seq_printf(m,
2996                           " Host SCSI ID: %u, Host Queue Size: %u, Device Queue Size: %u\n",
2997                           ep_3550->adapter_scsi_id,
2998                           ep_3550->max_host_qng, ep_3550->max_dvc_qng);
2999        else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800)
3000                seq_printf(m,

3001                           " Host SCSI ID: %u, Host Queue Size: %u, Device Queue Size: %u\n",
3002                           ep_38C0800->adapter_scsi_id,
3003                           ep_38C0800->max_host_qng,
3004                           ep_38C0800->max_dvc_qng);
3005        else
3006                seq_printf(m,
3007                           " Host SCSI ID: %u, Host Queue Size: %u, Device Queue Size: %u\n",
3008                           ep_38C1600->adapter_scsi_id,
3009                           ep_38C1600->max_host_qng,
3010                           ep_38C1600->max_dvc_qng);
3011        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
3012                word = ep_3550->termination;
3013        } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
3014                word = ep_38C0800->termination_lvd;
3015        } else {
3016                word = ep_38C1600->termination_lvd;
3017        }
3018        switch (word) {
3019        case 1:
3020                termstr = "Low Off/High Off";
3021                break;
3022        case 2:
3023                termstr = "Low Off/High On";
3024                break;
3025        case 3:
3026                termstr = "Low On/High On";
3027                break;
3028        default:
3029        case 0:
3030                termstr = "Automatic";
3031                break;
3032        }
3033
3034        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550)
3035                seq_printf(m,
3036                           " termination: %u (%s), bios_ctrl: 0x%x\n",
3037                           ep_3550->termination, termstr,
3038                           ep_3550->bios_ctrl);
3039        else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800)
3040                seq_printf(m,
3041                           " termination: %u (%s), bios_ctrl: 0x%x\n",
3042                           ep_38C0800->termination_lvd, termstr,
3043                           ep_38C0800->bios_ctrl);
3044        else
3045                seq_printf(m,
3046                           " termination: %u (%s), bios_ctrl: 0x%x\n",
3047                           ep_38C1600->termination_lvd, termstr,
3048                           ep_38C1600->bios_ctrl);
3049
3050        seq_puts(m, " Target ID:           ");
3051        for (i = 0; i <= ADV_MAX_TID; i++)
3052                seq_printf(m, " %X", i);
3053        seq_putc(m, '\n');
3054
3055        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
3056                word = ep_3550->disc_enable;
3057        } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
3058                word = ep_38C0800->disc_enable;
3059        } else {
3060                word = ep_38C1600->disc_enable;
3061        }
3062        seq_puts(m, " Disconnects:         ");
3063        for (i = 0; i <= ADV_MAX_TID; i++)
3064                seq_printf(m, " %c",
3065                           (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3066        seq_putc(m, '\n');
3067
3068        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
3069                word = ep_3550->tagqng_able;
3070        } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
3071                word = ep_38C0800->tagqng_able;
3072        } else {
3073                word = ep_38C1600->tagqng_able;
3074        }
3075        seq_puts(m, " Command Queuing:     ");
3076        for (i = 0; i <= ADV_MAX_TID; i++)
3077                seq_printf(m, " %c",
3078                           (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3079        seq_putc(m, '\n');
3080
3081        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
3082                word = ep_3550->start_motor;
3083        } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
3084                word = ep_38C0800->start_motor;
3085        } else {
3086                word = ep_38C1600->start_motor;
3087        }
3088        seq_puts(m, " Start Motor:         ");
3089        for (i = 0; i <= ADV_MAX_TID; i++)
3090                seq_printf(m, " %c",
3091                           (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3092        seq_putc(m, '\n');
3093
3094        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
3095                seq_puts(m, " Synchronous Transfer:");
3096                for (i = 0; i <= ADV_MAX_TID; i++)
3097                        seq_printf(m, " %c",
3098                                   (ep_3550->sdtr_able & ADV_TID_TO_TIDMASK(i)) ?
3099                                   'Y' : 'N');
3100                seq_putc(m, '\n');
3101        }
3102
3103        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
3104                seq_puts(m, " Ultra Transfer:      ");
3105                for (i = 0; i <= ADV_MAX_TID; i++)
3106                        seq_printf(m, " %c",
3107                                   (ep_3550->ultra_able & ADV_TID_TO_TIDMASK(i))
3108                                   ? 'Y' : 'N');
3109                seq_putc(m, '\n');
3110        }
3111
3112        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
3113                word = ep_3550->wdtr_able;
3114        } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
3115                word = ep_38C0800->wdtr_able;
3116        } else {
3117                word = ep_38C1600->wdtr_able;
3118        }
3119        seq_puts(m, " Wide Transfer:       ");
3120        for (i = 0; i <= ADV_MAX_TID; i++)
3121                seq_printf(m, " %c",
3122                           (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3123        seq_putc(m, '\n');
3124
3125        if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800 ||
3126            adv_dvc_varp->chip_type == ADV_CHIP_ASC38C1600) {
3127                seq_puts(m, " Synchronous Transfer Speed (Mhz):\n  ");
3128                for (i = 0; i <= ADV_MAX_TID; i++) {
3129                        char *speed_str;
3130
3131                        if (i == 0) {
3132                                sdtr_speed = adv_dvc_varp->sdtr_speed1;
3133                        } else if (i == 4) {
3134                                sdtr_speed = adv_dvc_varp->sdtr_speed2;
3135                        } else if (i == 8) {
3136                                sdtr_speed = adv_dvc_varp->sdtr_speed3;
3137                        } else if (i == 12) {
3138                                sdtr_speed = adv_dvc_varp->sdtr_speed4;
3139                        }
3140                        switch (sdtr_speed & ADV_MAX_TID) {
3141                        case 0:
3142                                speed_str = "Off";
3143                                break;
3144                        case 1:
3145                                speed_str = "  5";
3146                                break;
3147                        case 2:
3148                                speed_str = " 10";
3149                                break;
3150                        case 3:
3151                                speed_str = " 20";
3152                                break;
3153                        case 4:
3154                                speed_str = " 40";
3155                                break;
3156                        case 5:
3157                                speed_str = " 80";
3158                                break;
3159                        default:
3160                                speed_str = "Unk";
3161                                break;
3162                        }
3163                        seq_printf(m, "%X:%s ", i, speed_str);
3164                        if (i == 7)
3165                                seq_puts(m, "\n  ");
3166                        sdtr_speed >>= 4;
3167                }
3168                seq_putc(m, '\n');
3169        }
3170}
3171
3172/*
3173 * asc_prt_driver_conf()
3174 */
3175static void asc_prt_driver_conf(struct seq_file *m, struct Scsi_Host *shost)
3176{
3177        struct asc_board *boardp = shost_priv(shost);
3178        int chip_scsi_id;
3179
3180        seq_printf(m,
3181                "\nLinux Driver Configuration and Information for AdvanSys SCSI Host %d:\n",
3182                shost->host_no);
3183
3184        seq_printf(m,
3185                   " host_busy %d, max_id %u, max_lun %llu, max_channel %u\n",
3186                   scsi_host_busy(shost), shost->max_id,
3187                   shost->max_lun, shost->max_channel);
3188
3189        seq_printf(m,
3190                   " unique_id %d, can_queue %d, this_id %d, sg_tablesize %u, cmd_per_lun %u\n",
3191                   shost->unique_id, shost->can_queue, shost->this_id,
3192                   shost->sg_tablesize, shost->cmd_per_lun);
3193
3194        seq_printf(m,
3195                   " unchecked_isa_dma %d, use_clustering %d\n",
3196                   shost->unchecked_isa_dma, shost->use_clustering);
3197
3198        seq_printf(m,
3199                   " flags 0x%x, last_reset 0x%lx, jiffies 0x%lx, asc_n_io_port 0x%x\n",
3200                   boardp->flags, shost->last_reset, jiffies,
3201                   boardp->asc_n_io_port);
3202
3203        seq_printf(m, " io_port 0x%lx\n", shost->io_port);
3204
3205        if (ASC_NARROW_BOARD(boardp)) {
3206                chip_scsi_id = boardp->dvc_cfg.asc_dvc_cfg.chip_scsi_id;
3207        } else {
3208                chip_scsi_id = boardp->dvc_var.adv_dvc_var.chip_scsi_id;
3209        }
3210}
3211
3212/*
3213 * asc_prt_asc_board_info()
3214 *
3215 * Print dynamic board configuration information.
3216 */
3217static void asc_prt_asc_board_info(struct seq_file *m, struct Scsi_Host *shost)
3218{
3219        struct asc_board *boardp = shost_priv(shost);
3220        int chip_scsi_id;
3221        ASC_DVC_VAR *v;
3222        ASC_DVC_CFG *c;
3223        int i;
3224        int renegotiate = 0;
3225
3226        v = &boardp->dvc_var.asc_dvc_var;
3227        c = &boardp->dvc_cfg.asc_dvc_cfg;
3228        chip_scsi_id = c->chip_scsi_id;
3229
3230        seq_printf(m,
3231                   "\nAsc Library Configuration and Statistics for AdvanSys SCSI Host %d:\n",
3232                   shost->host_no);
3233
3234        seq_printf(m, " chip_version %u, mcode_date 0x%x, "
3235                   "mcode_version 0x%x, err_code %u\n",
3236                   c->chip_version, c->mcode_date, c->mcode_version,
3237                   v->err_code);
3238
3239        /* Current number of commands waiting for the host. */
3240        seq_printf(m,
3241                   " Total Command Pending: %d\n", v->cur_total_qng);
3242
3243        seq_puts(m, " Command Queuing:");
3244        for (i = 0; i <= ASC_MAX_TID; i++) {
3245                if ((chip_scsi_id == i) ||
3246                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3247                        continue;
3248                }
3249                seq_printf(m, " %X:%c",
3250                           i,
3251                           (v->use_tagged_qng & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3252        }
3253
3254        /* Current number of commands waiting for a device. */
3255        seq_puts(m, "\n Command Queue Pending:");
3256        for (i = 0; i <= ASC_MAX_TID; i++) {
3257                if ((chip_scsi_id == i) ||
3258                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3259                        continue;
3260                }
3261                seq_printf(m, " %X:%u", i, v->cur_dvc_qng[i]);
3262        }
3263
3264        /* Current limit on number of commands that can be sent to a device. */
3265        seq_puts(m, "\n Command Queue Limit:");
3266        for (i = 0; i <= ASC_MAX_TID; i++) {
3267                if ((chip_scsi_id == i) ||
3268                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3269                        continue;
3270                }
3271                seq_printf(m, " %X:%u", i, v->max_dvc_qng[i]);
3272        }
3273
3274        /* Indicate whether the device has returned queue full status. */
3275        seq_puts(m, "\n Command Queue Full:");
3276        for (i = 0; i <= ASC_MAX_TID; i++) {
3277                if ((chip_scsi_id == i) ||
3278                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3279                        continue;
3280                }
3281                if (boardp->queue_full & ADV_TID_TO_TIDMASK(i))
3282                        seq_printf(m, " %X:Y-%d",
3283                                   i, boardp->queue_full_cnt[i]);
3284                else
3285                        seq_printf(m, " %X:N", i);
3286        }
3287
3288        seq_puts(m, "\n Synchronous Transfer:");
3289        for (i = 0; i <= ASC_MAX_TID; i++) {
3290                if ((chip_scsi_id == i) ||
3291                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3292                        continue;
3293                }
3294                seq_printf(m, " %X:%c",
3295                           i,
3296                           (v->sdtr_done & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3297        }
3298        seq_putc(m, '\n');
3299
3300        for (i = 0; i <= ASC_MAX_TID; i++) {
3301                uchar syn_period_ix;
3302
3303                if ((chip_scsi_id == i) ||
3304                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0) ||
3305                    ((v->init_sdtr & ADV_TID_TO_TIDMASK(i)) == 0)) {
3306                        continue;
3307                }
3308
3309                seq_printf(m, "  %X:", i);
3310
3311                if ((boardp->sdtr_data[i] & ASC_SYN_MAX_OFFSET) == 0) {
3312                        seq_puts(m, " Asynchronous");
3313                } else {
3314                        syn_period_ix =
3315                            (boardp->sdtr_data[i] >> 4) & (v->max_sdtr_index -
3316                                                           1);
3317
3318                        seq_printf(m,
3319                                   " Transfer Period Factor: %d (%d.%d Mhz),",
3320                                   v->sdtr_period_tbl[syn_period_ix],
3321                                   250 / v->sdtr_period_tbl[syn_period_ix],
3322                                   ASC_TENTHS(250,
3323                                              v->sdtr_period_tbl[syn_period_ix]));
3324
3325                        seq_printf(m, " REQ/ACK Offset: %d",
3326                                   boardp->sdtr_data[i] & ASC_SYN_MAX_OFFSET);
3327                }
3328
3329                if ((v->sdtr_done & ADV_TID_TO_TIDMASK(i)) == 0) {
3330                        seq_puts(m, "*\n");
3331                        renegotiate = 1;
3332                } else {
3333                        seq_putc(m, '\n');
3334                }
3335        }
3336
3337        if (renegotiate) {
3338                seq_puts(m, " * = Re-negotiation pending before next command.\n");
3339        }
3340}
3341
3342/*
3343 * asc_prt_adv_board_info()
3344 *
3345 * Print dynamic board configuration information.
3346 */
3347static void asc_prt_adv_board_info(struct seq_file *m, struct Scsi_Host *shost)
3348{
3349        struct asc_board *boardp = shost_priv(shost);
3350        int i;
3351        ADV_DVC_VAR *v;
3352        ADV_DVC_CFG *c;
3353        AdvPortAddr iop_base;
3354        ushort chip_scsi_id;
3355        ushort lramword;
3356        uchar lrambyte;
3357        ushort tagqng_able;
3358        ushort sdtr_able, wdtr_able;
3359        ushort wdtr_done, sdtr_done;
3360        ushort period = 0;
3361        int renegotiate = 0;
3362
3363        v = &boardp->dvc_var.adv_dvc_var;
3364        c = &boardp->dvc_cfg.adv_dvc_cfg;
3365        iop_base = v->iop_base;
3366        chip_scsi_id = v->chip_scsi_id;
3367
3368        seq_printf(m,
3369                   "\nAdv Library Configuration and Statistics for AdvanSys SCSI Host %d:\n",
3370                   shost->host_no);
3371
3372        seq_printf(m,
3373                   " iop_base 0x%lx, cable_detect: %X, err_code %u\n",
3374                   (unsigned long)v->iop_base,
3375                   AdvReadWordRegister(iop_base,IOPW_SCSI_CFG1) & CABLE_DETECT,
3376                   v->err_code);
3377
3378        seq_printf(m, " chip_version %u, mcode_date 0x%x, "
3379                   "mcode_version 0x%x\n", c->chip_version,
3380                   c->mcode_date, c->mcode_version);
3381
3382        AdvReadWordLram(iop_base, ASC_MC_TAGQNG_ABLE, tagqng_able);
3383        seq_puts(m, " Queuing Enabled:");
3384        for (i = 0; i <= ADV_MAX_TID; i++) {
3385                if ((chip_scsi_id == i) ||
3386                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3387                        continue;
3388                }
3389
3390                seq_printf(m, " %X:%c",
3391                           i,
3392                           (tagqng_able & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3393        }
3394
3395        seq_puts(m, "\n Queue Limit:");
3396        for (i = 0; i <= ADV_MAX_TID; i++) {
3397                if ((chip_scsi_id == i) ||
3398                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3399                        continue;
3400                }
3401
3402                AdvReadByteLram(iop_base, ASC_MC_NUMBER_OF_MAX_CMD + i,
3403                                lrambyte);
3404
3405                seq_printf(m, " %X:%d", i, lrambyte);
3406        }
3407
3408        seq_puts(m, "\n Command Pending:");
3409        for (i = 0; i <= ADV_MAX_TID; i++) {
3410                if ((chip_scsi_id == i) ||
3411                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3412                        continue;
3413                }
3414
3415                AdvReadByteLram(iop_base, ASC_MC_NUMBER_OF_QUEUED_CMD + i,
3416                                lrambyte);
3417
3418                seq_printf(m, " %X:%d", i, lrambyte);
3419        }
3420        seq_putc(m, '\n');
3421
3422        AdvReadWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
3423        seq_puts(m, " Wide Enabled:");
3424        for (i = 0; i <= ADV_MAX_TID; i++) {
3425                if ((chip_scsi_id == i) ||
3426                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3427                        continue;
3428                }
3429
3430                seq_printf(m, " %X:%c",
3431                           i,
3432                           (wdtr_able & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3433        }
3434        seq_putc(m, '\n');
3435
3436        AdvReadWordLram(iop_base, ASC_MC_WDTR_DONE, wdtr_done);
3437        seq_puts(m, " Transfer Bit Width:");
3438        for (i = 0; i <= ADV_MAX_TID; i++) {
3439                if ((chip_scsi_id == i) ||
3440                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3441                        continue;
3442                }
3443
3444                AdvReadWordLram(iop_base,
3445                                ASC_MC_DEVICE_HSHK_CFG_TABLE + (2 * i),
3446                                lramword);
3447
3448                seq_printf(m, " %X:%d",
3449                           i, (lramword & 0x8000) ? 16 : 8);
3450
3451                if ((wdtr_able & ADV_TID_TO_TIDMASK(i)) &&
3452                    (wdtr_done & ADV_TID_TO_TIDMASK(i)) == 0) {
3453                        seq_putc(m, '*');
3454                        renegotiate = 1;
3455                }
3456        }
3457        seq_putc(m, '\n');
3458
3459        AdvReadWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
3460        seq_puts(m, " Synchronous Enabled:");
3461        for (i = 0; i <= ADV_MAX_TID; i++) {
3462                if ((chip_scsi_id == i) ||
3463                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0)) {
3464                        continue;
3465                }
3466
3467                seq_printf(m, " %X:%c",
3468                           i,
3469                           (sdtr_able & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
3470        }
3471        seq_putc(m, '\n');
3472
3473        AdvReadWordLram(iop_base, ASC_MC_SDTR_DONE, sdtr_done);
3474        for (i = 0; i <= ADV_MAX_TID; i++) {
3475
3476                AdvReadWordLram(iop_base,
3477                                ASC_MC_DEVICE_HSHK_CFG_TABLE + (2 * i),
3478                                lramword);
3479                lramword &= ~0x8000;
3480
3481                if ((chip_scsi_id == i) ||
3482                    ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(i)) == 0) ||
3483                    ((sdtr_able & ADV_TID_TO_TIDMASK(i)) == 0)) {
3484                        continue;
3485                }
3486
3487                seq_printf(m, "  %X:", i);
3488
3489                if ((lramword & 0x1F) == 0) {   /* Check for REQ/ACK Offset 0. */
3490                        seq_puts(m, " Asynchronous");
3491                } else {
3492                        seq_puts(m, " Transfer Period Factor: ");
3493
3494                        if ((lramword & 0x1F00) == 0x1100) {    /* 80 Mhz */
3495                                seq_puts(m, "9 (80.0 Mhz),");
3496                        } else if ((lramword & 0x1F00) == 0x1000) {     /* 40 Mhz */
3497                                seq_puts(m, "10 (40.0 Mhz),");
3498                        } else {        /* 20 Mhz or below. */
3499
3500                                period = (((lramword >> 8) * 25) + 50) / 4;
3501
3502                                if (period == 0) {      /* Should never happen. */
3503                                        seq_printf(m, "%d (? Mhz), ", period);
3504                                } else {
3505                                        seq_printf(m,
3506                                                   "%d (%d.%d Mhz),",
3507                                                   period, 250 / period,
3508                                                   ASC_TENTHS(250, period));
3509                                }
3510                        }
3511
3512                        seq_printf(m, " REQ/ACK Offset: %d",
3513                                   lramword & 0x1F);
3514                }
3515
3516                if ((sdtr_done & ADV_TID_TO_TIDMASK(i)) == 0) {
3517                        seq_puts(m, "*\n");
3518                        renegotiate = 1;
3519                } else {
3520                        seq_putc(m, '\n');
3521                }
3522        }
3523
3524        if (renegotiate) {
3525                seq_puts(m, " * = Re-negotiation pending before next command.\n");
3526        }
3527}
3528
3529#ifdef ADVANSYS_STATS
3530/*
3531 * asc_prt_board_stats()
3532 */
3533static void asc_prt_board_stats(struct seq_file *m, struct Scsi_Host *shost)
3534{
3535        struct asc_board *boardp = shost_priv(shost);
3536        struct asc_stats *s = &boardp->asc_stats;
3537
3538        seq_printf(m,
3539                   "\nLinux Driver Statistics for AdvanSys SCSI Host %d:\n",
3540                   shost->host_no);
3541
3542        seq_printf(m,
3543                   " queuecommand %u, reset %u, biosparam %u, interrupt %u\n",
3544                   s->queuecommand, s->reset, s->biosparam,
3545                   s->interrupt);
3546
3547        seq_printf(m,
3548                   " callback %u, done %u, build_error %u, build_noreq %u, build_nosg %u\n",
3549                   s->callback, s->done, s->build_error,
3550                   s->adv_build_noreq, s->adv_build_nosg);
3551
3552        seq_printf(m,
3553                   " exe_noerror %u, exe_busy %u, exe_error %u, exe_unknown %u\n",
3554                   s->exe_noerror, s->exe_busy, s->exe_error,
3555                   s->exe_unknown);
3556
3557        /*
3558         * Display data transfer statistics.
3559         */
3560        if (s->xfer_cnt > 0) {
3561                seq_printf(m, " xfer_cnt %u, xfer_elem %u, ",
3562                           s->xfer_cnt, s->xfer_elem);
3563
3564                seq_printf(m, "xfer_bytes %u.%01u kb\n",
3565                           s->xfer_sect / 2, ASC_TENTHS(s->xfer_sect, 2));
3566
3567                /* Scatter gather transfer statistics */
3568                seq_printf(m, " avg_num_elem %u.%01u, ",
3569                           s->xfer_elem / s->xfer_cnt,
3570                           ASC_TENTHS(s->xfer_elem, s->xfer_cnt));
3571
3572                seq_printf(m, "avg_elem_size %u.%01u kb, ",
3573                           (s->xfer_sect / 2) / s->xfer_elem,
3574                           ASC_TENTHS((s->xfer_sect / 2), s->xfer_elem));
3575
3576                seq_printf(m, "avg_xfer_size %u.%01u kb\n",
3577                           (s->xfer_sect / 2) / s->xfer_cnt,
3578                           ASC_TENTHS((s->xfer_sect / 2), s->xfer_cnt));
3579        }
3580}
3581#endif /* ADVANSYS_STATS */
3582
3583/*
3584 * advansys_show_info() - /proc/scsi/advansys/{0,1,2,3,...}
3585 *
3586 * m: seq_file to print into
3587 * shost: Scsi_Host
3588 *
3589 * Return the number of bytes read from or written to a
3590 * /proc/scsi/advansys/[0...] file.
3591 */
3592static int
3593advansys_show_info(struct seq_file *m, struct Scsi_Host *shost)
3594{
3595        struct asc_board *boardp = shost_priv(shost);
3596
3597        ASC_DBG(1, "begin\n");
3598
3599        /*
3600         * User read of /proc/scsi/advansys/[0...] file.
3601         */
3602
3603        /*
3604         * Get board configuration information.
3605         *
3606         * advansys_info() returns the board string from its own static buffer.
3607         */
3608        /* Copy board information. */
3609        seq_printf(m, "%s\n", (char *)advansys_info(shost));
3610        /*
3611         * Display Wide Board BIOS Information.
3612         */
3613        if (!ASC_NARROW_BOARD(boardp))
3614                asc_prt_adv_bios(m, shost);
3615
3616        /*
3617         * Display driver information for each device attached to the board.
3618         */
3619        asc_prt_board_devices(m, shost);
3620
3621        /*
3622         * Display EEPROM configuration for the board.
3623         */
3624        if (ASC_NARROW_BOARD(boardp))
3625                asc_prt_asc_board_eeprom(m, shost);
3626        else
3627                asc_prt_adv_board_eeprom(m, shost);
3628
3629        /*
3630         * Display driver configuration and information for the board.
3631         */
3632        asc_prt_driver_conf(m, shost);
3633
3634#ifdef ADVANSYS_STATS
3635        /*
3636         * Display driver statistics for the board.
3637         */
3638        asc_prt_board_stats(m, shost);
3639#endif /* ADVANSYS_STATS */
3640
3641        /*
3642         * Display Asc Library dynamic configuration information
3643         * for the board.
3644         */
3645        if (ASC_NARROW_BOARD(boardp))
3646                asc_prt_asc_board_info(m, shost);
3647        else
3648                asc_prt_adv_board_info(m, shost);
3649        return 0;
3650}
3651#endif /* CONFIG_PROC_FS */
3652
3653static void asc_scsi_done(struct scsi_cmnd *scp)
3654{
3655        scsi_dma_unmap(scp);
3656        ASC_STATS(scp->device->host, done);
3657        scp->scsi_done(scp);
3658}
3659
3660static void AscSetBank(PortAddr iop_base, uchar bank)
3661{
3662        uchar val;
3663
3664        val = AscGetChipControl(iop_base) &
3665            (~
3666             (CC_SINGLE_STEP | CC_TEST | CC_DIAG | CC_SCSI_RESET |
3667              CC_CHIP_RESET));
3668        if (bank == 1) {
3669                val |= CC_BANK_ONE;
3670        } else if (bank == 2) {
3671                val |= CC_DIAG | CC_BANK_ONE;
3672        } else {
3673                val &= ~CC_BANK_ONE;
3674        }
3675        AscSetChipControl(iop_base, val);
3676}
3677
3678static void AscSetChipIH(PortAddr iop_base, ushort ins_code)
3679{
3680        AscSetBank(iop_base, 1);
3681        AscWriteChipIH(iop_base, ins_code);
3682        AscSetBank(iop_base, 0);
3683}
3684
3685static int AscStartChip(PortAddr iop_base)
3686{
3687        AscSetChipControl(iop_base, 0);
3688        if ((AscGetChipStatus(iop_base) & CSW_HALTED) != 0) {
3689                return (0);
3690        }
3691        return (1);
3692}
3693
3694static bool AscStopChip(PortAddr iop_base)
3695{
3696        uchar cc_val;
3697
3698        cc_val =
3699            AscGetChipControl(iop_base) &
3700            (~(CC_SINGLE_STEP | CC_TEST | CC_DIAG));
3701        AscSetChipControl(iop_base, (uchar)(cc_val | CC_HALT));
3702        AscSetChipIH(iop_base, INS_HALT);
3703        AscSetChipIH(iop_base, INS_RFLAG_WTM);
3704        if ((AscGetChipStatus(iop_base) & CSW_HALTED) == 0) {
3705                return false;
3706        }
3707        return true;
3708}
3709
3710static bool AscIsChipHalted(PortAddr iop_base)
3711{
3712        if ((AscGetChipStatus(iop_base) & CSW_HALTED) != 0) {
3713                if ((AscGetChipControl(iop_base) & CC_HALT) != 0) {
3714                        return true;
3715                }
3716        }
3717        return false;
3718}
3719
3720static bool AscResetChipAndScsiBus(ASC_DVC_VAR *asc_dvc)
3721{
3722        PortAddr iop_base;
3723        int i = 10;
3724
3725        iop_base = asc_dvc->iop_base;
3726        while ((AscGetChipStatus(iop_base) & CSW_SCSI_RESET_ACTIVE)
3727               && (i-- > 0)) {
3728                mdelay(100);
3729        }
3730        AscStopChip(iop_base);
3731        AscSetChipControl(iop_base, CC_CHIP_RESET | CC_SCSI_RESET | CC_HALT);
3732        udelay(60);
3733        AscSetChipIH(iop_base, INS_RFLAG_WTM);
3734        AscSetChipIH(iop_base, INS_HALT);
3735        AscSetChipControl(iop_base, CC_CHIP_RESET | CC_HALT);
3736        AscSetChipControl(iop_base, CC_HALT);
3737        mdelay(200);
3738        AscSetChipStatus(iop_base, CIW_CLR_SCSI_RESET_INT);
3739        AscSetChipStatus(iop_base, 0);
3740        return (AscIsChipHalted(iop_base));
3741}
3742
3743static int AscFindSignature(PortAddr iop_base)
3744{
3745        ushort sig_word;
3746
3747        ASC_DBG(1, "AscGetChipSignatureByte(0x%x) 0x%x\n",
3748                 iop_base, AscGetChipSignatureByte(iop_base));
3749        if (AscGetChipSignatureByte(iop_base) == (uchar)ASC_1000_ID1B) {
3750                ASC_DBG(1, "AscGetChipSignatureWord(0x%x) 0x%x\n",
3751                         iop_base, AscGetChipSignatureWord(iop_base));
3752                sig_word = AscGetChipSignatureWord(iop_base);
3753                if ((sig_word == (ushort)ASC_1000_ID0W) ||
3754                    (sig_word == (ushort)ASC_1000_ID0W_FIX)) {
3755                        return (1);
3756                }
3757        }
3758        return (0);
3759}
3760
3761static void AscEnableInterrupt(PortAddr iop_base)
3762{
3763        ushort cfg;
3764
3765        cfg = AscGetChipCfgLsw(iop_base);
3766        AscSetChipCfgLsw(iop_base, cfg | ASC_CFG0_HOST_INT_ON);
3767}
3768
3769static void AscDisableInterrupt(PortAddr iop_base)
3770{
3771        ushort cfg;
3772
3773        cfg = AscGetChipCfgLsw(iop_base);
3774        AscSetChipCfgLsw(iop_base, cfg & (~ASC_CFG0_HOST_INT_ON));
3775}
3776
3777static uchar AscReadLramByte(PortAddr iop_base, ushort addr)
3778{
3779        unsigned char byte_data;
3780        unsigned short word_data;
3781
3782        if (isodd_word(addr)) {
3783                AscSetChipLramAddr(iop_base, addr - 1);
3784                word_data = AscGetChipLramData(iop_base);
3785                byte_data = (word_data >> 8) & 0xFF;
3786        } else {
3787                AscSetChipLramAddr(iop_base, addr);
3788                word_data = AscGetChipLramData(iop_base);
3789                byte_data = word_data & 0xFF;
3790        }
3791        return byte_data;
3792}
3793
3794static ushort AscReadLramWord(PortAddr iop_base, ushort addr)
3795{
3796        ushort word_data;
3797
3798        AscSetChipLramAddr(iop_base, addr);
3799        word_data = AscGetChipLramData(iop_base);
3800        return (word_data);
3801}
3802
3803static void
3804AscMemWordSetLram(PortAddr iop_base, ushort s_addr, ushort set_wval, int words)
3805{
3806        int i;
3807
3808        AscSetChipLramAddr(iop_base, s_addr);
3809        for (i = 0; i < words; i++) {
3810                AscSetChipLramData(iop_base, set_wval);
3811        }
3812}
3813
3814static void AscWriteLramWord(PortAddr iop_base, ushort addr, ushort word_val)
3815{
3816        AscSetChipLramAddr(iop_base, addr);
3817        AscSetChipLramData(iop_base, word_val);
3818}
3819
3820static void AscWriteLramByte(PortAddr iop_base, ushort addr, uchar byte_val)
3821{
3822        ushort word_data;
3823
3824        if (isodd_word(addr)) {
3825                addr--;
3826                word_data = AscReadLramWord(iop_base, addr);
3827                word_data &= 0x00FF;
3828                word_data |= (((ushort)byte_val << 8) & 0xFF00);
3829        } else {
3830                word_data = AscReadLramWord(iop_base, addr);
3831                word_data &= 0xFF00;
3832                word_data |= ((ushort)byte_val & 0x00FF);
3833        }
3834        AscWriteLramWord(iop_base, addr, word_data);
3835}
3836
3837/*
3838 * Copy 2 bytes to LRAM.
3839 *
3840 * The source data is assumed to be in little-endian order in memory
3841 * and is maintained in little-endian order when written to LRAM.
3842 */
3843static void
3844AscMemWordCopyPtrToLram(PortAddr iop_base, ushort s_addr,
3845                        const uchar *s_buffer, int words)
3846{
3847        int i;
3848
3849        AscSetChipLramAddr(iop_base, s_addr);
3850        for (i = 0; i < 2 * words; i += 2) {
3851                /*
3852                 * On a little-endian system the second argument below
3853                 * produces a little-endian ushort which is written to
3854                 * LRAM in little-endian order. On a big-endian system
3855                 * the second argument produces a big-endian ushort which
3856                 * is "transparently" byte-swapped by outpw() and written
3857                 * in little-endian order to LRAM.
3858                 */
3859                outpw(iop_base + IOP_RAM_DATA,
3860                      ((ushort)s_buffer[i + 1] << 8) | s_buffer[i]);
3861        }
3862}
3863
3864/*
3865 * Copy 4 bytes to LRAM.
3866 *
3867 * The source data is assumed to be in little-endian order in memory
3868 * and is maintained in little-endian order when written to LRAM.
3869 */
3870static void
3871AscMemDWordCopyPtrToLram(PortAddr iop_base,
3872                         ushort s_addr, uchar *s_buffer, int dwords)
3873{
3874        int i;
3875
3876        AscSetChipLramAddr(iop_base, s_addr);
3877        for (i = 0; i < 4 * dwords; i += 4) {
3878                outpw(iop_base + IOP_RAM_DATA, ((ushort)s_buffer[i + 1] << 8) | s_buffer[i]);   /* LSW */
3879                outpw(iop_base + IOP_RAM_DATA, ((ushort)s_buffer[i + 3] << 8) | s_buffer[i + 2]);       /* MSW */
3880        }
3881}
3882
3883/*
3884 * Copy 2 bytes from LRAM.
3885 *
3886 * The source data is assumed to be in little-endian order in LRAM
3887 * and is maintained in little-endian order when written to memory.
3888 */
3889static void
3890AscMemWordCopyPtrFromLram(PortAddr iop_base,
3891                          ushort s_addr, uchar *d_buffer, int words)
3892{
3893        int i;
3894        ushort word;
3895
3896        AscSetChipLramAddr(iop_base, s_addr);
3897        for (i = 0; i < 2 * words; i += 2) {
3898                word = inpw(iop_base + IOP_RAM_DATA);
3899                d_buffer[i] = word & 0xff;
3900                d_buffer[i + 1] = (word >> 8) & 0xff;
3901        }
3902}
3903
3904static u32 AscMemSumLramWord(PortAddr iop_base, ushort s_addr, int words)
3905{
3906        u32 sum = 0;
3907        int i;
3908
3909        for (i = 0; i < words; i++, s_addr += 2) {
3910                sum += AscReadLramWord(iop_base, s_addr);
3911        }
3912        return (sum);
3913}
3914
3915static void AscInitLram(ASC_DVC_VAR *asc_dvc)
3916{
3917        uchar i;
3918        ushort s_addr;
3919        PortAddr iop_base;
3920
3921        iop_base = asc_dvc->iop_base;
3922        AscMemWordSetLram(iop_base, ASC_QADR_BEG, 0,
3923                          (ushort)(((int)(asc_dvc->max_total_qng + 2 + 1) *
3924                                    64) >> 1));
3925        i = ASC_MIN_ACTIVE_QNO;
3926        s_addr = ASC_QADR_BEG + ASC_QBLK_SIZE;
3927        AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_FWD),
3928                         (uchar)(i + 1));
3929        AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_BWD),
3930                         (uchar)(asc_dvc->max_total_qng));
3931        AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_QNO),
3932                         (uchar)i);
3933        i++;
3934        s_addr += ASC_QBLK_SIZE;
3935        for (; i < asc_dvc->max_total_qng; i++, s_addr += ASC_QBLK_SIZE) {
3936                AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_FWD),
3937                                 (uchar)(i + 1));
3938                AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_BWD),
3939                                 (uchar)(i - 1));
3940                AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_QNO),
3941                                 (uchar)i);
3942        }
3943        AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_FWD),
3944                         (uchar)ASC_QLINK_END);
3945        AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_BWD),
3946                         (uchar)(asc_dvc->max_total_qng - 1));
3947        AscWriteLramByte(iop_base, (ushort)(s_addr + ASC_SCSIQ_B_QNO),
3948                         (uchar)asc_dvc->max_total_qng);
3949        i++;
3950        s_addr += ASC_QBLK_SIZE;
3951        for (; i <= (uchar)(asc_dvc->max_total_qng + 3);
3952             i++, s_addr += ASC_QBLK_SIZE) {
3953                AscWriteLramByte(iop_base,
3954                                 (ushort)(s_addr + (ushort)ASC_SCSIQ_B_FWD), i);
3955                AscWriteLramByte(iop_base,
3956                                 (ushort)(s_addr + (ushort)ASC_SCSIQ_B_BWD), i);
3957                AscWriteLramByte(iop_base,
3958                                 (ushort)(s_addr + (ushort)ASC_SCSIQ_B_QNO), i);
3959        }
3960}
3961
3962static u32
3963AscLoadMicroCode(PortAddr iop_base, ushort s_addr,
3964                 const uchar *mcode_buf, ushort mcode_size)
3965{
3966        u32 chksum;
3967        ushort mcode_word_size;
3968        ushort mcode_chksum;
3969
3970        /* Write the microcode buffer starting at LRAM address 0. */
3971        mcode_word_size = (ushort)(mcode_size >> 1);
3972        AscMemWordSetLram(iop_base, s_addr, 0, mcode_word_size);
3973        AscMemWordCopyPtrToLram(iop_base, s_addr, mcode_buf, mcode_word_size);
3974
3975        chksum = AscMemSumLramWord(iop_base, s_addr, mcode_word_size);
3976        ASC_DBG(1, "chksum 0x%lx\n", (ulong)chksum);
3977        mcode_chksum = (ushort)AscMemSumLramWord(iop_base,
3978                                                 (ushort)ASC_CODE_SEC_BEG,
3979                                                 (ushort)((mcode_size -
3980                                                           s_addr - (ushort)
3981                                                           ASC_CODE_SEC_BEG) /
3982                                                          2));
3983        ASC_DBG(1, "mcode_chksum 0x%lx\n", (ulong)mcode_chksum);
3984        AscWriteLramWord(iop_base, ASCV_MCODE_CHKSUM_W, mcode_chksum);
3985        AscWriteLramWord(iop_base, ASCV_MCODE_SIZE_W, mcode_size);
3986        return chksum;
3987}
3988
3989static void AscInitQLinkVar(ASC_DVC_VAR *asc_dvc)
3990{
3991        PortAddr iop_base;
3992        int i;
3993        ushort lram_addr;
3994
3995        iop_base = asc_dvc->iop_base;
3996        AscPutRiscVarFreeQHead(iop_base, 1);
3997        AscPutRiscVarDoneQTail(iop_base, asc_dvc->max_total_qng);
3998        AscPutVarFreeQHead(iop_base, 1);
3999        AscPutVarDoneQTail(iop_base, asc_dvc->max_total_qng);
4000        AscWriteLramByte(iop_base, ASCV_BUSY_QHEAD_B,

4001                         (uchar)((int)asc_dvc->max_total_qng + 1));
4002        AscWriteLramByte(iop_base, ASCV_DISC1_QHEAD_B,
4003                         (uchar)((int)asc_dvc->max_total_qng + 2));
4004        AscWriteLramByte(iop_base, (ushort)ASCV_TOTAL_READY_Q_B,
4005                         asc_dvc->max_total_qng);
4006        AscWriteLramWord(iop_base, ASCV_ASCDVC_ERR_CODE_W, 0);
4007        AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
4008        AscWriteLramByte(iop_base, ASCV_STOP_CODE_B, 0);
4009        AscWriteLramByte(iop_base, ASCV_SCSIBUSY_B, 0);
4010        AscWriteLramByte(iop_base, ASCV_WTM_FLAG_B, 0);
4011        AscPutQDoneInProgress(iop_base, 0);
4012        lram_addr = ASC_QADR_BEG;
4013        for (i = 0; i < 32; i++, lram_addr += 2) {
4014                AscWriteLramWord(iop_base, lram_addr, 0);
4015        }
4016}
4017
4018static int AscInitMicroCodeVar(ASC_DVC_VAR *asc_dvc)
4019{
4020        int i;
4021        int warn_code;
4022        PortAddr iop_base;
4023        __le32 phy_addr;
4024        __le32 phy_size;
4025        struct asc_board *board = asc_dvc_to_board(asc_dvc);
4026
4027        iop_base = asc_dvc->iop_base;
4028        warn_code = 0;
4029        for (i = 0; i <= ASC_MAX_TID; i++) {
4030                AscPutMCodeInitSDTRAtID(iop_base, i,
4031                                        asc_dvc->cfg->sdtr_period_offset[i]);
4032        }
4033
4034        AscInitQLinkVar(asc_dvc);
4035        AscWriteLramByte(iop_base, ASCV_DISC_ENABLE_B,
4036                         asc_dvc->cfg->disc_enable);
4037        AscWriteLramByte(iop_base, ASCV_HOSTSCSI_ID_B,
4038                         ASC_TID_TO_TARGET_ID(asc_dvc->cfg->chip_scsi_id));
4039
4040        /* Ensure overrun buffer is aligned on an 8 byte boundary. */
4041        BUG_ON((unsigned long)asc_dvc->overrun_buf & 7);
4042        asc_dvc->overrun_dma = dma_map_single(board->dev, asc_dvc->overrun_buf,
4043                                        ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
4044        if (dma_mapping_error(board->dev, asc_dvc->overrun_dma)) {
4045                warn_code = -ENOMEM;
4046                goto err_dma_map;
4047        }
4048        phy_addr = cpu_to_le32(asc_dvc->overrun_dma);
4049        AscMemDWordCopyPtrToLram(iop_base, ASCV_OVERRUN_PADDR_D,
4050                                 (uchar *)&phy_addr, 1);
4051        phy_size = cpu_to_le32(ASC_OVERRUN_BSIZE);
4052        AscMemDWordCopyPtrToLram(iop_base, ASCV_OVERRUN_BSIZE_D,
4053                                 (uchar *)&phy_size, 1);
4054
4055        asc_dvc->cfg->mcode_date =
4056            AscReadLramWord(iop_base, (ushort)ASCV_MC_DATE_W);
4057        asc_dvc->cfg->mcode_version =
4058            AscReadLramWord(iop_base, (ushort)ASCV_MC_VER_W);
4059
4060        AscSetPCAddr(iop_base, ASC_MCODE_START_ADDR);
4061        if (AscGetPCAddr(iop_base) != ASC_MCODE_START_ADDR) {
4062                asc_dvc->err_code |= ASC_IERR_SET_PC_ADDR;
4063                warn_code = -EINVAL;
4064                goto err_mcode_start;
4065        }
4066        if (AscStartChip(iop_base) != 1) {
4067                asc_dvc->err_code |= ASC_IERR_START_STOP_CHIP;
4068                warn_code = -EIO;
4069                goto err_mcode_start;
4070        }
4071
4072        return warn_code;
4073
4074err_mcode_start:
4075        dma_unmap_single(board->dev, asc_dvc->overrun_dma,
4076                         ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
4077err_dma_map:
4078        asc_dvc->overrun_dma = 0;
4079        return warn_code;
4080}
4081
4082static int AscInitAsc1000Driver(ASC_DVC_VAR *asc_dvc)
4083{
4084        const struct firmware *fw;
4085        const char fwname[] = "advansys/mcode.bin";
4086        int err;
4087        unsigned long chksum;
4088        int warn_code;
4089        PortAddr iop_base;
4090
4091        iop_base = asc_dvc->iop_base;
4092        warn_code = 0;
4093        if ((asc_dvc->dvc_cntl & ASC_CNTL_RESET_SCSI) &&
4094            !(asc_dvc->init_state & ASC_INIT_RESET_SCSI_DONE)) {
4095                AscResetChipAndScsiBus(asc_dvc);
4096                mdelay(asc_dvc->scsi_reset_wait * 1000); /* XXX: msleep? */
4097        }
4098        asc_dvc->init_state |= ASC_INIT_STATE_BEG_LOAD_MC;
4099        if (asc_dvc->err_code != 0)
4100                return ASC_ERROR;
4101        if (!AscFindSignature(asc_dvc->iop_base)) {
4102                asc_dvc->err_code = ASC_IERR_BAD_SIGNATURE;
4103                return warn_code;
4104        }
4105        AscDisableInterrupt(iop_base);
4106        AscInitLram(asc_dvc);
4107
4108        err = request_firmware(&fw, fwname, asc_dvc->drv_ptr->dev);
4109        if (err) {
4110                printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
4111                       fwname, err);
4112                asc_dvc->err_code |= ASC_IERR_MCODE_CHKSUM;
4113                return err;
4114        }
4115        if (fw->size < 4) {
4116                printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
4117                       fw->size, fwname);
4118                release_firmware(fw);
4119                asc_dvc->err_code |= ASC_IERR_MCODE_CHKSUM;
4120                return -EINVAL;
4121        }
4122        chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |
4123                 (fw->data[1] << 8) | fw->data[0];
4124        ASC_DBG(1, "_asc_mcode_chksum 0x%lx\n", (ulong)chksum);
4125        if (AscLoadMicroCode(iop_base, 0, &fw->data[4],
4126                             fw->size - 4) != chksum) {
4127                asc_dvc->err_code |= ASC_IERR_MCODE_CHKSUM;
4128                release_firmware(fw);
4129                return warn_code;
4130        }
4131        release_firmware(fw);
4132        warn_code |= AscInitMicroCodeVar(asc_dvc);
4133        if (!asc_dvc->overrun_dma)
4134                return warn_code;
4135        asc_dvc->init_state |= ASC_INIT_STATE_END_LOAD_MC;
4136        AscEnableInterrupt(iop_base);
4137        return warn_code;
4138}
4139
4140/*
4141 * Load the Microcode
4142 *
4143 * Write the microcode image to RISC memory starting at address 0.
4144 *
4145 * The microcode is stored compressed in the following format:
4146 *
4147 *  254 word (508 byte) table indexed by byte code followed
4148 *  by the following byte codes:
4149 *
4150 *    1-Byte Code:
4151 *      00: Emit word 0 in table.
4152 *      01: Emit word 1 in table.
4153 *      .
4154 *      FD: Emit word 253 in table.
4155 *
4156 *    Multi-Byte Code:
4157 *      FE WW WW: (3 byte code) Word to emit is the next word WW WW.
4158 *      FF BB WW WW: (4 byte code) Emit BB count times next word WW WW.
4159 *
4160 * Returns 0 or an error if the checksum doesn't match
4161 */
4162static int AdvLoadMicrocode(AdvPortAddr iop_base, const unsigned char *buf,
4163                            int size, int memsize, int chksum)
4164{
4165        int i, j, end, len = 0;
4166        u32 sum;
4167
4168        AdvWriteWordRegister(iop_base, IOPW_RAM_ADDR, 0);
4169
4170        for (i = 253 * 2; i < size; i++) {
4171                if (buf[i] == 0xff) {
4172                        unsigned short word = (buf[i + 3] << 8) | buf[i + 2];
4173                        for (j = 0; j < buf[i + 1]; j++) {
4174                                AdvWriteWordAutoIncLram(iop_base, word);
4175                                len += 2;
4176                        }
4177                        i += 3;
4178                } else if (buf[i] == 0xfe) {
4179                        unsigned short word = (buf[i + 2] << 8) | buf[i + 1];
4180                        AdvWriteWordAutoIncLram(iop_base, word);
4181                        i += 2;
4182                        len += 2;
4183                } else {
4184                        unsigned int off = buf[i] * 2;
4185                        unsigned short word = (buf[off + 1] << 8) | buf[off];
4186                        AdvWriteWordAutoIncLram(iop_base, word);
4187                        len += 2;
4188                }
4189        }
4190
4191        end = len;
4192
4193        while (len < memsize) {
4194                AdvWriteWordAutoIncLram(iop_base, 0);
4195                len += 2;
4196        }
4197
4198        /* Verify the microcode checksum. */
4199        sum = 0;
4200        AdvWriteWordRegister(iop_base, IOPW_RAM_ADDR, 0);
4201
4202        for (len = 0; len < end; len += 2) {
4203                sum += AdvReadWordAutoIncLram(iop_base);
4204        }
4205
4206        if (sum != chksum)
4207                return ASC_IERR_MCODE_CHKSUM;
4208
4209        return 0;
4210}
4211
4212static void AdvBuildCarrierFreelist(struct adv_dvc_var *adv_dvc)
4213{
4214        off_t carr_offset = 0, next_offset;
4215        dma_addr_t carr_paddr;
4216        int carr_num = ADV_CARRIER_BUFSIZE / sizeof(ADV_CARR_T), i;
4217
4218        for (i = 0; i < carr_num; i++) {
4219                carr_offset = i * sizeof(ADV_CARR_T);
4220                /* Get physical address of the carrier 'carrp'. */
4221                carr_paddr = adv_dvc->carrier_addr + carr_offset;
4222
4223                adv_dvc->carrier[i].carr_pa = cpu_to_le32(carr_paddr);
4224                adv_dvc->carrier[i].carr_va = cpu_to_le32(carr_offset);
4225                adv_dvc->carrier[i].areq_vpa = 0;
4226                next_offset = carr_offset + sizeof(ADV_CARR_T);
4227                if (i == carr_num)
4228                        next_offset = ~0;
4229                adv_dvc->carrier[i].next_vpa = cpu_to_le32(next_offset);
4230        }
4231        /*
4232         * We cannot have a carrier with 'carr_va' of '0', as
4233         * a reference to this carrier would be interpreted as
4234         * list termination.
4235         * So start at carrier 1 with the freelist.
4236         */
4237        adv_dvc->carr_freelist = &adv_dvc->carrier[1];
4238}
4239
4240static ADV_CARR_T *adv_get_carrier(struct adv_dvc_var *adv_dvc, u32 offset)
4241{
4242        int index;
4243
4244        BUG_ON(offset > ADV_CARRIER_BUFSIZE);
4245
4246        index = offset / sizeof(ADV_CARR_T);
4247        return &adv_dvc->carrier[index];
4248}
4249
4250static ADV_CARR_T *adv_get_next_carrier(struct adv_dvc_var *adv_dvc)
4251{
4252        ADV_CARR_T *carrp = adv_dvc->carr_freelist;
4253        u32 next_vpa = le32_to_cpu(carrp->next_vpa);
4254
4255        if (next_vpa == 0 || next_vpa == ~0) {
4256                ASC_DBG(1, "invalid vpa offset 0x%x\n", next_vpa);
4257                return NULL;
4258        }
4259
4260        adv_dvc->carr_freelist = adv_get_carrier(adv_dvc, next_vpa);
4261        /*
4262         * insert stopper carrier to terminate list
4263         */
4264        carrp->next_vpa = cpu_to_le32(ADV_CQ_STOPPER);
4265
4266        return carrp;
4267}
4268
4269/*
4270 * 'offset' is the index in the request pointer array
4271 */
4272static adv_req_t * adv_get_reqp(struct adv_dvc_var *adv_dvc, u32 offset)
4273{
4274        struct asc_board *boardp = adv_dvc->drv_ptr;
4275
4276        BUG_ON(offset > adv_dvc->max_host_qng);
4277        return &boardp->adv_reqp[offset];
4278}
4279
4280/*
4281 * Send an idle command to the chip and wait for completion.
4282 *
4283 * Command completion is polled for once per microsecond.
4284 *
4285 * The function can be called from anywhere including an interrupt handler.
4286 * But the function is not re-entrant, so it uses the DvcEnter/LeaveCritical()
4287 * functions to prevent reentrancy.
4288 *
4289 * Return Values:
4290 *   ADV_TRUE - command completed successfully
4291 *   ADV_FALSE - command failed
4292 *   ADV_ERROR - command timed out
4293 */
4294static int
4295AdvSendIdleCmd(ADV_DVC_VAR *asc_dvc,
4296               ushort idle_cmd, u32 idle_cmd_parameter)
4297{
4298        int result, i, j;
4299        AdvPortAddr iop_base;
4300
4301        iop_base = asc_dvc->iop_base;
4302
4303        /*
4304         * Clear the idle command status which is set by the microcode
4305         * to a non-zero value to indicate when the command is completed.
4306         * The non-zero result is one of the IDLE_CMD_STATUS_* values
4307         */
4308        AdvWriteWordLram(iop_base, ASC_MC_IDLE_CMD_STATUS, (ushort)0);
4309
4310        /*
4311         * Write the idle command value after the idle command parameter
4312         * has been written to avoid a race condition. If the order is not
4313         * followed, the microcode may process the idle command before the
4314         * parameters have been written to LRAM.
4315         */
4316        AdvWriteDWordLramNoSwap(iop_base, ASC_MC_IDLE_CMD_PARAMETER,
4317                                cpu_to_le32(idle_cmd_parameter));
4318        AdvWriteWordLram(iop_base, ASC_MC_IDLE_CMD, idle_cmd);
4319
4320        /*
4321         * Tickle the RISC to tell it to process the idle command.
4322         */
4323        AdvWriteByteRegister(iop_base, IOPB_TICKLE, ADV_TICKLE_B);
4324        if (asc_dvc->chip_type == ADV_CHIP_ASC3550) {
4325                /*
4326                 * Clear the tickle value. In the ASC-3550 the RISC flag
4327                 * command 'clr_tickle_b' does not work unless the host
4328                 * value is cleared.
4329                 */
4330                AdvWriteByteRegister(iop_base, IOPB_TICKLE, ADV_TICKLE_NOP);
4331        }
4332
4333        /* Wait for up to 100 millisecond for the idle command to timeout. */
4334        for (i = 0; i < SCSI_WAIT_100_MSEC; i++) {
4335                /* Poll once each microsecond for command completion. */
4336                for (j = 0; j < SCSI_US_PER_MSEC; j++) {
4337                        AdvReadWordLram(iop_base, ASC_MC_IDLE_CMD_STATUS,
4338                                        result);
4339                        if (result != 0)
4340                                return result;
4341                        udelay(1);
4342                }
4343        }
4344
4345        BUG();          /* The idle command should never timeout. */
4346        return ADV_ERROR;
4347}
4348
4349/*
4350 * Reset SCSI Bus and purge all outstanding requests.
4351 *
4352 * Return Value:
4353 *      ADV_TRUE(1) -   All requests are purged and SCSI Bus is reset.
4354 *      ADV_FALSE(0) -  Microcode command failed.
4355 *      ADV_ERROR(-1) - Microcode command timed-out. Microcode or IC
4356 *                      may be hung which requires driver recovery.
4357 */
4358static int AdvResetSB(ADV_DVC_VAR *asc_dvc)
4359{
4360        int status;
4361
4362        /*
4363         * Send the SCSI Bus Reset idle start idle command which asserts
4364         * the SCSI Bus Reset signal.
4365         */
4366        status = AdvSendIdleCmd(asc_dvc, (ushort)IDLE_CMD_SCSI_RESET_START, 0L);
4367        if (status != ADV_TRUE) {
4368                return status;
4369        }
4370
4371        /*
4372         * Delay for the specified SCSI Bus Reset hold time.
4373         *
4374         * The hold time delay is done on the host because the RISC has no
4375         * microsecond accurate timer.
4376         */
4377        udelay(ASC_SCSI_RESET_HOLD_TIME_US);
4378
4379        /*
4380         * Send the SCSI Bus Reset end idle command which de-asserts
4381         * the SCSI Bus Reset signal and purges any pending requests.
4382         */
4383        status = AdvSendIdleCmd(asc_dvc, (ushort)IDLE_CMD_SCSI_RESET_END, 0L);
4384        if (status != ADV_TRUE) {
4385                return status;
4386        }
4387
4388        mdelay(asc_dvc->scsi_reset_wait * 1000);        /* XXX: msleep? */
4389
4390        return status;
4391}
4392
4393/*
4394 * Initialize the ASC-3550.
4395 *
4396 * On failure set the ADV_DVC_VAR field 'err_code' and return ADV_ERROR.
4397 *
4398 * For a non-fatal error return a warning code. If there are no warnings
4399 * then 0 is returned.
4400 *
4401 * Needed after initialization for error recovery.
4402 */
4403static int AdvInitAsc3550Driver(ADV_DVC_VAR *asc_dvc)
4404{
4405        const struct firmware *fw;
4406        const char fwname[] = "advansys/3550.bin";
4407        AdvPortAddr iop_base;
4408        ushort warn_code;
4409        int begin_addr;
4410        int end_addr;
4411        ushort code_sum;
4412        int word;
4413        int i;
4414        int err;
4415        unsigned long chksum;
4416        ushort scsi_cfg1;
4417        uchar tid;
4418        ushort bios_mem[ASC_MC_BIOSLEN / 2];    /* BIOS RISC Memory 0x40-0x8F. */
4419        ushort wdtr_able = 0, sdtr_able, tagqng_able;
4420        uchar max_cmd[ADV_MAX_TID + 1];
4421
4422        /* If there is already an error, don't continue. */
4423        if (asc_dvc->err_code != 0)
4424                return ADV_ERROR;
4425
4426        /*
4427         * The caller must set 'chip_type' to ADV_CHIP_ASC3550.
4428         */
4429        if (asc_dvc->chip_type != ADV_CHIP_ASC3550) {
4430                asc_dvc->err_code = ASC_IERR_BAD_CHIPTYPE;
4431                return ADV_ERROR;
4432        }
4433
4434        warn_code = 0;
4435        iop_base = asc_dvc->iop_base;
4436
4437        /*
4438         * Save the RISC memory BIOS region before writing the microcode.
4439         * The BIOS may already be loaded and using its RISC LRAM region
4440         * so its region must be saved and restored.
4441         *
4442         * Note: This code makes the assumption, which is currently true,
4443         * that a chip reset does not clear RISC LRAM.
4444         */
4445        for (i = 0; i < ASC_MC_BIOSLEN / 2; i++) {
4446                AdvReadWordLram(iop_base, ASC_MC_BIOSMEM + (2 * i),
4447                                bios_mem[i]);
4448        }
4449
4450        /*
4451         * Save current per TID negotiated values.
4452         */
4453        if (bios_mem[(ASC_MC_BIOS_SIGNATURE - ASC_MC_BIOSMEM) / 2] == 0x55AA) {
4454                ushort bios_version, major, minor;
4455
4456                bios_version =
4457                    bios_mem[(ASC_MC_BIOS_VERSION - ASC_MC_BIOSMEM) / 2];
4458                major = (bios_version >> 12) & 0xF;
4459                minor = (bios_version >> 8) & 0xF;
4460                if (major < 3 || (major == 3 && minor == 1)) {
4461                        /* BIOS 3.1 and earlier location of 'wdtr_able' variable. */
4462                        AdvReadWordLram(iop_base, 0x120, wdtr_able);
4463                } else {
4464                        AdvReadWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
4465                }
4466        }
4467        AdvReadWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
4468        AdvReadWordLram(iop_base, ASC_MC_TAGQNG_ABLE, tagqng_able);
4469        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
4470                AdvReadByteLram(iop_base, ASC_MC_NUMBER_OF_MAX_CMD + tid,
4471                                max_cmd[tid]);
4472        }
4473
4474        err = request_firmware(&fw, fwname, asc_dvc->drv_ptr->dev);
4475        if (err) {
4476                printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
4477                       fwname, err);
4478                asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
4479                return err;
4480        }
4481        if (fw->size < 4) {
4482                printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
4483                       fw->size, fwname);
4484                release_firmware(fw);
4485                asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
4486                return -EINVAL;
4487        }
4488        chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |
4489                 (fw->data[1] << 8) | fw->data[0];
4490        asc_dvc->err_code = AdvLoadMicrocode(iop_base, &fw->data[4],
4491                                             fw->size - 4, ADV_3550_MEMSIZE,
4492                                             chksum);
4493        release_firmware(fw);
4494        if (asc_dvc->err_code)
4495                return ADV_ERROR;
4496
4497        /*
4498         * Restore the RISC memory BIOS region.
4499         */
4500        for (i = 0; i < ASC_MC_BIOSLEN / 2; i++) {
4501                AdvWriteWordLram(iop_base, ASC_MC_BIOSMEM + (2 * i),
4502                                 bios_mem[i]);
4503        }
4504
4505        /*
4506         * Calculate and write the microcode code checksum to the microcode
4507         * code checksum location ASC_MC_CODE_CHK_SUM (0x2C).
4508         */
4509        AdvReadWordLram(iop_base, ASC_MC_CODE_BEGIN_ADDR, begin_addr);
4510        AdvReadWordLram(iop_base, ASC_MC_CODE_END_ADDR, end_addr);
4511        code_sum = 0;
4512        AdvWriteWordRegister(iop_base, IOPW_RAM_ADDR, begin_addr);
4513        for (word = begin_addr; word < end_addr; word += 2) {
4514                code_sum += AdvReadWordAutoIncLram(iop_base);
4515        }
4516        AdvWriteWordLram(iop_base, ASC_MC_CODE_CHK_SUM, code_sum);
4517
4518        /*
4519         * Read and save microcode version and date.
4520         */
4521        AdvReadWordLram(iop_base, ASC_MC_VERSION_DATE,
4522                        asc_dvc->cfg->mcode_date);
4523        AdvReadWordLram(iop_base, ASC_MC_VERSION_NUM,
4524                        asc_dvc->cfg->mcode_version);
4525
4526        /*
4527         * Set the chip type to indicate the ASC3550.
4528         */
4529        AdvWriteWordLram(iop_base, ASC_MC_CHIP_TYPE, ADV_CHIP_ASC3550);
4530
4531        /*
4532         * If the PCI Configuration Command Register "Parity Error Response
4533         * Control" Bit was clear (0), then set the microcode variable
4534         * 'control_flag' CONTROL_FLAG_IGNORE_PERR flag to tell the microcode
4535         * to ignore DMA parity errors.
4536         */
4537        if (asc_dvc->cfg->control_flag & CONTROL_FLAG_IGNORE_PERR) {
4538                AdvReadWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
4539                word |= CONTROL_FLAG_IGNORE_PERR;
4540                AdvWriteWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
4541        }
4542
4543        /*
4544         * For ASC-3550, setting the START_CTL_EMFU [3:2] bits sets a FIFO
4545         * threshold of 128 bytes. This register is only accessible to the host.
4546         */
4547        AdvWriteByteRegister(iop_base, IOPB_DMA_CFG0,
4548                             START_CTL_EMFU | READ_CMD_MRM);
4549
4550        /*
4551         * Microcode operating variables for WDTR, SDTR, and command tag
4552         * queuing will be set in slave_configure() based on what a
4553         * device reports it is capable of in Inquiry byte 7.
4554         *
4555         * If SCSI Bus Resets have been disabled, then directly set
4556         * SDTR and WDTR from the EEPROM configuration. This will allow
4557         * the BIOS and warm boot to work without a SCSI bus hang on
4558         * the Inquiry caused by host and target mismatched DTR values.
4559         * Without the SCSI Bus Reset, before an Inquiry a device can't
4560         * be assumed to be in Asynchronous, Narrow mode.
4561         */
4562        if ((asc_dvc->bios_ctrl & BIOS_CTRL_RESET_SCSI_BUS) == 0) {
4563                AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE,
4564                                 asc_dvc->wdtr_able);
4565                AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE,
4566                                 asc_dvc->sdtr_able);
4567        }
4568
4569        /*
4570         * Set microcode operating variables for SDTR_SPEED1, SDTR_SPEED2,
4571         * SDTR_SPEED3, and SDTR_SPEED4 based on the ULTRA EEPROM per TID
4572         * bitmask. These values determine the maximum SDTR speed negotiated
4573         * with a device.
4574         *
4575         * The SDTR per TID bitmask overrides the SDTR_SPEED1, SDTR_SPEED2,
4576         * SDTR_SPEED3, and SDTR_SPEED4 values so it is safe to set them
4577         * without determining here whether the device supports SDTR.
4578         *
4579         * 4-bit speed  SDTR speed name
4580         * ===========  ===============
4581         * 0000b (0x0)  SDTR disabled
4582         * 0001b (0x1)  5 Mhz
4583         * 0010b (0x2)  10 Mhz
4584         * 0011b (0x3)  20 Mhz (Ultra)
4585         * 0100b (0x4)  40 Mhz (LVD/Ultra2)
4586         * 0101b (0x5)  80 Mhz (LVD2/Ultra3)
4587         * 0110b (0x6)  Undefined
4588         * .
4589         * 1111b (0xF)  Undefined
4590         */
4591        word = 0;
4592        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
4593                if (ADV_TID_TO_TIDMASK(tid) & asc_dvc->ultra_able) {
4594                        /* Set Ultra speed for TID 'tid'. */
4595                        word |= (0x3 << (4 * (tid % 4)));
4596                } else {
4597                        /* Set Fast speed for TID 'tid'. */
4598                        word |= (0x2 << (4 * (tid % 4)));
4599                }
4600                if (tid == 3) { /* Check if done with sdtr_speed1. */
4601                        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED1, word);
4602                        word = 0;
4603                } else if (tid == 7) {  /* Check if done with sdtr_speed2. */
4604                        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED2, word);
4605                        word = 0;
4606                } else if (tid == 11) { /* Check if done with sdtr_speed3. */
4607                        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED3, word);
4608                        word = 0;
4609                } else if (tid == 15) { /* Check if done with sdtr_speed4. */
4610                        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED4, word);
4611                        /* End of loop. */
4612                }
4613        }
4614
4615        /*
4616         * Set microcode operating variable for the disconnect per TID bitmask.
4617         */
4618        AdvWriteWordLram(iop_base, ASC_MC_DISC_ENABLE,
4619                         asc_dvc->cfg->disc_enable);
4620
4621        /*
4622         * Set SCSI_CFG0 Microcode Default Value.
4623         *
4624         * The microcode will set the SCSI_CFG0 register using this value
4625         * after it is started below.
4626         */
4627        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SCSI_CFG0,
4628                         PARITY_EN | QUEUE_128 | SEL_TMO_LONG | OUR_ID_EN |
4629                         asc_dvc->chip_scsi_id);
4630
4631        /*
4632         * Determine SCSI_CFG1 Microcode Default Value.
4633         *
4634         * The microcode will set the SCSI_CFG1 register using this value
4635         * after it is started below.
4636         */
4637
4638        /* Read current SCSI_CFG1 Register value. */
4639        scsi_cfg1 = AdvReadWordRegister(iop_base, IOPW_SCSI_CFG1);
4640
4641        /*
4642         * If all three connectors are in use, return an error.
4643         */
4644        if ((scsi_cfg1 & CABLE_ILLEGAL_A) == 0 ||
4645            (scsi_cfg1 & CABLE_ILLEGAL_B) == 0) {
4646                asc_dvc->err_code |= ASC_IERR_ILLEGAL_CONNECTION;
4647                return ADV_ERROR;
4648        }
4649
4650        /*
4651         * If the internal narrow cable is reversed all of the SCSI_CTRL
4652         * register signals will be set. Check for and return an error if
4653         * this condition is found.
4654         */
4655        if ((AdvReadWordRegister(iop_base, IOPW_SCSI_CTRL) & 0x3F07) == 0x3F07) {
4656                asc_dvc->err_code |= ASC_IERR_REVERSED_CABLE;
4657                return ADV_ERROR;
4658        }
4659
4660        /*
4661         * If this is a differential board and a single-ended device
4662         * is attached to one of the connectors, return an error.
4663         */
4664        if ((scsi_cfg1 & DIFF_MODE) && (scsi_cfg1 & DIFF_SENSE) == 0) {
4665                asc_dvc->err_code |= ASC_IERR_SINGLE_END_DEVICE;
4666                return ADV_ERROR;
4667        }
4668
4669        /*
4670         * If automatic termination control is enabled, then set the
4671         * termination value based on a table listed in a_condor.h.
4672         *
4673         * If manual termination was specified with an EEPROM setting
4674         * then 'termination' was set-up in AdvInitFrom3550EEPROM() and
4675         * is ready to be 'ored' into SCSI_CFG1.
4676         */
4677        if (asc_dvc->cfg->termination == 0) {
4678                /*
4679                 * The software always controls termination by setting TERM_CTL_SEL.
4680                 * If TERM_CTL_SEL were set to 0, the hardware would set termination.
4681                 */
4682                asc_dvc->cfg->termination |= TERM_CTL_SEL;
4683
4684                switch (scsi_cfg1 & CABLE_DETECT) {
4685                        /* TERM_CTL_H: on, TERM_CTL_L: on */
4686                case 0x3:
4687                case 0x7:
4688                case 0xB:
4689                case 0xD:
4690                case 0xE:
4691                case 0xF:
4692                        asc_dvc->cfg->termination |= (TERM_CTL_H | TERM_CTL_L);
4693                        break;
4694
4695                        /* TERM_CTL_H: on, TERM_CTL_L: off */
4696                case 0x1:
4697                case 0x5:
4698                case 0x9:
4699                case 0xA:
4700                case 0xC:
4701                        asc_dvc->cfg->termination |= TERM_CTL_H;
4702                        break;
4703
4704                        /* TERM_CTL_H: off, TERM_CTL_L: off */
4705                case 0x2:
4706                case 0x6:
4707                        break;
4708                }
4709        }
4710
4711        /*
4712         * Clear any set TERM_CTL_H and TERM_CTL_L bits.
4713         */
4714        scsi_cfg1 &= ~TERM_CTL;
4715
4716        /*
4717         * Invert the TERM_CTL_H and TERM_CTL_L bits and then
4718         * set 'scsi_cfg1'. The TERM_POL bit does not need to be
4719         * referenced, because the hardware internally inverts
4720         * the Termination High and Low bits if TERM_POL is set.
4721         */
4722        scsi_cfg1 |= (TERM_CTL_SEL | (~asc_dvc->cfg->termination & TERM_CTL));
4723
4724        /*
4725         * Set SCSI_CFG1 Microcode Default Value
4726         *
4727         * Set filter value and possibly modified termination control
4728         * bits in the Microcode SCSI_CFG1 Register Value.
4729         *
4730         * The microcode will set the SCSI_CFG1 register using this value
4731         * after it is started below.
4732         */
4733        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SCSI_CFG1,
4734                         FLTR_DISABLE | scsi_cfg1);
4735
4736        /*
4737         * Set MEM_CFG Microcode Default Value
4738         *
4739         * The microcode will set the MEM_CFG register using this value
4740         * after it is started below.
4741         *
4742         * MEM_CFG may be accessed as a word or byte, but only bits 0-7
4743         * are defined.
4744         *
4745         * ASC-3550 has 8KB internal memory.
4746         */
4747        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_MEM_CFG,
4748                         BIOS_EN | RAM_SZ_8KB);
4749
4750        /*
4751         * Set SEL_MASK Microcode Default Value
4752         *
4753         * The microcode will set the SEL_MASK register using this value
4754         * after it is started below.
4755         */
4756        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SEL_MASK,
4757                         ADV_TID_TO_TIDMASK(asc_dvc->chip_scsi_id));
4758
4759        AdvBuildCarrierFreelist(asc_dvc);
4760
4761        /*
4762         * Set-up the Host->RISC Initiator Command Queue (ICQ).
4763         */
4764
4765        asc_dvc->icq_sp = adv_get_next_carrier(asc_dvc);
4766        if (!asc_dvc->icq_sp) {
4767                asc_dvc->err_code |= ASC_IERR_NO_CARRIER;
4768                return ADV_ERROR;
4769        }
4770
4771        /*
4772         * Set RISC ICQ physical address start value.
4773         */
4774        AdvWriteDWordLramNoSwap(iop_base, ASC_MC_ICQ, asc_dvc->icq_sp->carr_pa);
4775
4776        /*
4777         * Set-up the RISC->Host Initiator Response Queue (IRQ).
4778         */
4779        asc_dvc->irq_sp = adv_get_next_carrier(asc_dvc);
4780        if (!asc_dvc->irq_sp) {
4781                asc_dvc->err_code |= ASC_IERR_NO_CARRIER;
4782                return ADV_ERROR;
4783        }
4784
4785        /*
4786         * Set RISC IRQ physical address start value.
4787         */
4788        AdvWriteDWordLramNoSwap(iop_base, ASC_MC_IRQ, asc_dvc->irq_sp->carr_pa);
4789        asc_dvc->carr_pending_cnt = 0;
4790
4791        AdvWriteByteRegister(iop_base, IOPB_INTR_ENABLES,
4792                             (ADV_INTR_ENABLE_HOST_INTR |
4793                              ADV_INTR_ENABLE_GLOBAL_INTR));
4794
4795        AdvReadWordLram(iop_base, ASC_MC_CODE_BEGIN_ADDR, word);
4796        AdvWriteWordRegister(iop_base, IOPW_PC, word);
4797
4798        /* finally, finally, gentlemen, start your engine */
4799        AdvWriteWordRegister(iop_base, IOPW_RISC_CSR, ADV_RISC_CSR_RUN);
4800
4801        /*
4802         * Reset the SCSI Bus if the EEPROM indicates that SCSI Bus
4803         * Resets should be performed. The RISC has to be running
4804         * to issue a SCSI Bus Reset.
4805         */
4806        if (asc_dvc->bios_ctrl & BIOS_CTRL_RESET_SCSI_BUS) {
4807                /*
4808                 * If the BIOS Signature is present in memory, restore the
4809                 * BIOS Handshake Configuration Table and do not perform
4810                 * a SCSI Bus Reset.
4811                 */
4812                if (bios_mem[(ASC_MC_BIOS_SIGNATURE - ASC_MC_BIOSMEM) / 2] ==
4813                    0x55AA) {
4814                        /*
4815                         * Restore per TID negotiated values.
4816                         */
4817                        AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
4818                        AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
4819                        AdvWriteWordLram(iop_base, ASC_MC_TAGQNG_ABLE,
4820                                         tagqng_able);
4821                        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
4822                                AdvWriteByteLram(iop_base,
4823                                                 ASC_MC_NUMBER_OF_MAX_CMD + tid,
4824                                                 max_cmd[tid]);
4825                        }
4826                } else {
4827                        if (AdvResetSB(asc_dvc) != ADV_TRUE) {
4828                                warn_code = ASC_WARN_BUSRESET_ERROR;
4829                        }
4830                }
4831        }
4832
4833        return warn_code;
4834}
4835
4836/*
4837 * Initialize the ASC-38C0800.
4838 *
4839 * On failure set the ADV_DVC_VAR field 'err_code' and return ADV_ERROR.
4840 *
4841 * For a non-fatal error return a warning code. If there are no warnings
4842 * then 0 is returned.
4843 *
4844 * Needed after initialization for error recovery.
4845 */
4846static int AdvInitAsc38C0800Driver(ADV_DVC_VAR *asc_dvc)
4847{
4848        const struct firmware *fw;
4849        const char fwname[] = "advansys/38C0800.bin";
4850        AdvPortAddr iop_base;
4851        ushort warn_code;
4852        int begin_addr;
4853        int end_addr;
4854        ushort code_sum;
4855        int word;
4856        int i;
4857        int err;
4858        unsigned long chksum;
4859        ushort scsi_cfg1;
4860        uchar byte;
4861        uchar tid;
4862        ushort bios_mem[ASC_MC_BIOSLEN / 2];    /* BIOS RISC Memory 0x40-0x8F. */
4863        ushort wdtr_able, sdtr_able, tagqng_able;
4864        uchar max_cmd[ADV_MAX_TID + 1];
4865
4866        /* If there is already an error, don't continue. */
4867        if (asc_dvc->err_code != 0)
4868                return ADV_ERROR;
4869
4870        /*
4871         * The caller must set 'chip_type' to ADV_CHIP_ASC38C0800.
4872         */
4873        if (asc_dvc->chip_type != ADV_CHIP_ASC38C0800) {
4874                asc_dvc->err_code = ASC_IERR_BAD_CHIPTYPE;
4875                return ADV_ERROR;
4876        }
4877
4878        warn_code = 0;
4879        iop_base = asc_dvc->iop_base;
4880
4881        /*
4882         * Save the RISC memory BIOS region before writing the microcode.
4883         * The BIOS may already be loaded and using its RISC LRAM region
4884         * so its region must be saved and restored.
4885         *
4886         * Note: This code makes the assumption, which is currently true,
4887         * that a chip reset does not clear RISC LRAM.
4888         */
4889        for (i = 0; i < ASC_MC_BIOSLEN / 2; i++) {
4890                AdvReadWordLram(iop_base, ASC_MC_BIOSMEM + (2 * i),
4891                                bios_mem[i]);
4892        }
4893
4894        /*
4895         * Save current per TID negotiated values.
4896         */
4897        AdvReadWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
4898        AdvReadWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
4899        AdvReadWordLram(iop_base, ASC_MC_TAGQNG_ABLE, tagqng_able);
4900        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
4901                AdvReadByteLram(iop_base, ASC_MC_NUMBER_OF_MAX_CMD + tid,
4902                                max_cmd[tid]);
4903        }
4904
4905        /*
4906         * RAM BIST (RAM Built-In Self Test)
4907         *
4908         * Address : I/O base + offset 0x38h register (byte).
4909         * Function: Bit 7-6(RW) : RAM mode
4910         *                          Normal Mode   : 0x00
4911         *                          Pre-test Mode : 0x40
4912         *                          RAM Test Mode : 0x80
4913         *           Bit 5       : unused
4914         *           Bit 4(RO)   : Done bit
4915         *           Bit 3-0(RO) : Status
4916         *                          Host Error    : 0x08
4917         *                          Int_RAM Error : 0x04
4918         *                          RISC Error    : 0x02
4919         *                          SCSI Error    : 0x01
4920         *                          No Error      : 0x00
4921         *
4922         * Note: RAM BIST code should be put right here, before loading the
4923         * microcode and after saving the RISC memory BIOS region.
4924         */
4925
4926        /*
4927         * LRAM Pre-test
4928         *
4929         * Write PRE_TEST_MODE (0x40) to register and wait for 10 milliseconds.
4930         * If Done bit not set or low nibble not PRE_TEST_VALUE (0x05), return
4931         * an error. Reset to NORMAL_MODE (0x00) and do again. If cannot reset
4932         * to NORMAL_MODE, return an error too.
4933         */
4934        for (i = 0; i < 2; i++) {
4935                AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, PRE_TEST_MODE);
4936                mdelay(10);     /* Wait for 10ms before reading back. */
4937                byte = AdvReadByteRegister(iop_base, IOPB_RAM_BIST);
4938                if ((byte & RAM_TEST_DONE) == 0
4939                    || (byte & 0x0F) != PRE_TEST_VALUE) {
4940                        asc_dvc->err_code = ASC_IERR_BIST_PRE_TEST;
4941                        return ADV_ERROR;
4942                }
4943
4944                AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, NORMAL_MODE);
4945                mdelay(10);     /* Wait for 10ms before reading back. */
4946                if (AdvReadByteRegister(iop_base, IOPB_RAM_BIST)
4947                    != NORMAL_VALUE) {
4948                        asc_dvc->err_code = ASC_IERR_BIST_PRE_TEST;
4949                        return ADV_ERROR;
4950                }
4951        }
4952
4953        /*
4954         * LRAM Test - It takes about 1.5 ms to run through the test.
4955         *
4956         * Write RAM_TEST_MODE (0x80) to register and wait for 10 milliseconds.
4957         * If Done bit not set or Status not 0, save register byte, set the
4958         * err_code, and return an error.
4959         */
4960        AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, RAM_TEST_MODE);
4961        mdelay(10);     /* Wait for 10ms before checking status. */
4962
4963        byte = AdvReadByteRegister(iop_base, IOPB_RAM_BIST);
4964        if ((byte & RAM_TEST_DONE) == 0 || (byte & RAM_TEST_STATUS) != 0) {
4965                /* Get here if Done bit not set or Status not 0. */
4966                asc_dvc->bist_err_code = byte;  /* for BIOS display message */
4967                asc_dvc->err_code = ASC_IERR_BIST_RAM_TEST;
4968                return ADV_ERROR;
4969        }
4970
4971        /* We need to reset back to normal mode after LRAM test passes. */
4972        AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, NORMAL_MODE);
4973
4974        err = request_firmware(&fw, fwname, asc_dvc->drv_ptr->dev);
4975        if (err) {
4976                printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
4977                       fwname, err);
4978                asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
4979                return err;
4980        }
4981        if (fw->size < 4) {
4982                printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
4983                       fw->size, fwname);
4984                release_firmware(fw);
4985                asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
4986                return -EINVAL;
4987        }
4988        chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |
4989                 (fw->data[1] << 8) | fw->data[0];
4990        asc_dvc->err_code = AdvLoadMicrocode(iop_base, &fw->data[4],
4991                                             fw->size - 4, ADV_38C0800_MEMSIZE,
4992                                             chksum);
4993        release_firmware(fw);
4994        if (asc_dvc->err_code)
4995                return ADV_ERROR;
4996
4997        /*
4998         * Restore the RISC memory BIOS region.
4999         */
5000        for (i = 0; i < ASC_MC_BIOSLEN / 2; i++) {

5001                AdvWriteWordLram(iop_base, ASC_MC_BIOSMEM + (2 * i),
5002                                 bios_mem[i]);
5003        }
5004
5005        /*
5006         * Calculate and write the microcode code checksum to the microcode
5007         * code checksum location ASC_MC_CODE_CHK_SUM (0x2C).
5008         */
5009        AdvReadWordLram(iop_base, ASC_MC_CODE_BEGIN_ADDR, begin_addr);
5010        AdvReadWordLram(iop_base, ASC_MC_CODE_END_ADDR, end_addr);
5011        code_sum = 0;
5012        AdvWriteWordRegister(iop_base, IOPW_RAM_ADDR, begin_addr);
5013        for (word = begin_addr; word < end_addr; word += 2) {
5014                code_sum += AdvReadWordAutoIncLram(iop_base);
5015        }
5016        AdvWriteWordLram(iop_base, ASC_MC_CODE_CHK_SUM, code_sum);
5017
5018        /*
5019         * Read microcode version and date.
5020         */
5021        AdvReadWordLram(iop_base, ASC_MC_VERSION_DATE,
5022                        asc_dvc->cfg->mcode_date);
5023        AdvReadWordLram(iop_base, ASC_MC_VERSION_NUM,
5024                        asc_dvc->cfg->mcode_version);
5025
5026        /*
5027         * Set the chip type to indicate the ASC38C0800.
5028         */
5029        AdvWriteWordLram(iop_base, ASC_MC_CHIP_TYPE, ADV_CHIP_ASC38C0800);
5030
5031        /*
5032         * Write 1 to bit 14 'DIS_TERM_DRV' in the SCSI_CFG1 register.
5033         * When DIS_TERM_DRV set to 1, C_DET[3:0] will reflect current
5034         * cable detection and then we are able to read C_DET[3:0].
5035         *
5036         * Note: We will reset DIS_TERM_DRV to 0 in the 'Set SCSI_CFG1
5037         * Microcode Default Value' section below.
5038         */
5039        scsi_cfg1 = AdvReadWordRegister(iop_base, IOPW_SCSI_CFG1);
5040        AdvWriteWordRegister(iop_base, IOPW_SCSI_CFG1,
5041                             scsi_cfg1 | DIS_TERM_DRV);
5042
5043        /*
5044         * If the PCI Configuration Command Register "Parity Error Response
5045         * Control" Bit was clear (0), then set the microcode variable
5046         * 'control_flag' CONTROL_FLAG_IGNORE_PERR flag to tell the microcode
5047         * to ignore DMA parity errors.
5048         */
5049        if (asc_dvc->cfg->control_flag & CONTROL_FLAG_IGNORE_PERR) {
5050                AdvReadWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
5051                word |= CONTROL_FLAG_IGNORE_PERR;
5052                AdvWriteWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
5053        }
5054
5055        /*
5056         * For ASC-38C0800, set FIFO_THRESH_80B [6:4] bits and START_CTL_TH [3:2]
5057         * bits for the default FIFO threshold.
5058         *
5059         * Note: ASC-38C0800 FIFO threshold has been changed to 256 bytes.
5060         *
5061         * For DMA Errata #4 set the BC_THRESH_ENB bit.
5062         */
5063        AdvWriteByteRegister(iop_base, IOPB_DMA_CFG0,
5064                             BC_THRESH_ENB | FIFO_THRESH_80B | START_CTL_TH |
5065                             READ_CMD_MRM);
5066
5067        /*
5068         * Microcode operating variables for WDTR, SDTR, and command tag
5069         * queuing will be set in slave_configure() based on what a
5070         * device reports it is capable of in Inquiry byte 7.
5071         *
5072         * If SCSI Bus Resets have been disabled, then directly set
5073         * SDTR and WDTR from the EEPROM configuration. This will allow
5074         * the BIOS and warm boot to work without a SCSI bus hang on
5075         * the Inquiry caused by host and target mismatched DTR values.
5076         * Without the SCSI Bus Reset, before an Inquiry a device can't
5077         * be assumed to be in Asynchronous, Narrow mode.
5078         */
5079        if ((asc_dvc->bios_ctrl & BIOS_CTRL_RESET_SCSI_BUS) == 0) {
5080                AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE,
5081                                 asc_dvc->wdtr_able);
5082                AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE,
5083                                 asc_dvc->sdtr_able);
5084        }
5085
5086        /*
5087         * Set microcode operating variables for DISC and SDTR_SPEED1,
5088         * SDTR_SPEED2, SDTR_SPEED3, and SDTR_SPEED4 based on the EEPROM
5089         * configuration values.
5090         *
5091         * The SDTR per TID bitmask overrides the SDTR_SPEED1, SDTR_SPEED2,
5092         * SDTR_SPEED3, and SDTR_SPEED4 values so it is safe to set them
5093         * without determining here whether the device supports SDTR.
5094         */
5095        AdvWriteWordLram(iop_base, ASC_MC_DISC_ENABLE,
5096                         asc_dvc->cfg->disc_enable);
5097        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED1, asc_dvc->sdtr_speed1);
5098        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED2, asc_dvc->sdtr_speed2);
5099        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED3, asc_dvc->sdtr_speed3);
5100        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED4, asc_dvc->sdtr_speed4);
5101
5102        /*
5103         * Set SCSI_CFG0 Microcode Default Value.
5104         *
5105         * The microcode will set the SCSI_CFG0 register using this value
5106         * after it is started below.
5107         */
5108        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SCSI_CFG0,
5109                         PARITY_EN | QUEUE_128 | SEL_TMO_LONG | OUR_ID_EN |
5110                         asc_dvc->chip_scsi_id);
5111
5112        /*
5113         * Determine SCSI_CFG1 Microcode Default Value.
5114         *
5115         * The microcode will set the SCSI_CFG1 register using this value
5116         * after it is started below.
5117         */
5118
5119        /* Read current SCSI_CFG1 Register value. */
5120        scsi_cfg1 = AdvReadWordRegister(iop_base, IOPW_SCSI_CFG1);
5121
5122        /*
5123         * If the internal narrow cable is reversed all of the SCSI_CTRL
5124         * register signals will be set. Check for and return an error if
5125         * this condition is found.
5126         */
5127        if ((AdvReadWordRegister(iop_base, IOPW_SCSI_CTRL) & 0x3F07) == 0x3F07) {
5128                asc_dvc->err_code |= ASC_IERR_REVERSED_CABLE;
5129                return ADV_ERROR;
5130        }
5131
5132        /*
5133         * All kind of combinations of devices attached to one of four
5134         * connectors are acceptable except HVD device attached. For example,
5135         * LVD device can be attached to SE connector while SE device attached
5136         * to LVD connector.  If LVD device attached to SE connector, it only
5137         * runs up to Ultra speed.
5138         *
5139         * If an HVD device is attached to one of LVD connectors, return an
5140         * error.  However, there is no way to detect HVD device attached to
5141         * SE connectors.
5142         */
5143        if (scsi_cfg1 & HVD) {
5144                asc_dvc->err_code = ASC_IERR_HVD_DEVICE;
5145                return ADV_ERROR;
5146        }
5147
5148        /*
5149         * If either SE or LVD automatic termination control is enabled, then
5150         * set the termination value based on a table listed in a_condor.h.
5151         *
5152         * If manual termination was specified with an EEPROM setting then
5153         * 'termination' was set-up in AdvInitFrom38C0800EEPROM() and is ready
5154         * to be 'ored' into SCSI_CFG1.
5155         */
5156        if ((asc_dvc->cfg->termination & TERM_SE) == 0) {
5157                /* SE automatic termination control is enabled. */
5158                switch (scsi_cfg1 & C_DET_SE) {
5159                        /* TERM_SE_HI: on, TERM_SE_LO: on */
5160                case 0x1:
5161                case 0x2:
5162                case 0x3:
5163                        asc_dvc->cfg->termination |= TERM_SE;
5164                        break;
5165
5166                        /* TERM_SE_HI: on, TERM_SE_LO: off */
5167                case 0x0:
5168                        asc_dvc->cfg->termination |= TERM_SE_HI;
5169                        break;
5170                }
5171        }
5172
5173        if ((asc_dvc->cfg->termination & TERM_LVD) == 0) {
5174                /* LVD automatic termination control is enabled. */
5175                switch (scsi_cfg1 & C_DET_LVD) {
5176                        /* TERM_LVD_HI: on, TERM_LVD_LO: on */
5177                case 0x4:
5178                case 0x8:
5179                case 0xC:
5180                        asc_dvc->cfg->termination |= TERM_LVD;
5181                        break;
5182
5183                        /* TERM_LVD_HI: off, TERM_LVD_LO: off */
5184                case 0x0:
5185                        break;
5186                }
5187        }
5188
5189        /*
5190         * Clear any set TERM_SE and TERM_LVD bits.
5191         */
5192        scsi_cfg1 &= (~TERM_SE & ~TERM_LVD);
5193
5194        /*
5195         * Invert the TERM_SE and TERM_LVD bits and then set 'scsi_cfg1'.
5196         */
5197        scsi_cfg1 |= (~asc_dvc->cfg->termination & 0xF0);
5198
5199        /*
5200         * Clear BIG_ENDIAN, DIS_TERM_DRV, Terminator Polarity and HVD/LVD/SE
5201         * bits and set possibly modified termination control bits in the
5202         * Microcode SCSI_CFG1 Register Value.
5203         */
5204        scsi_cfg1 &= (~BIG_ENDIAN & ~DIS_TERM_DRV & ~TERM_POL & ~HVD_LVD_SE);
5205
5206        /*
5207         * Set SCSI_CFG1 Microcode Default Value
5208         *
5209         * Set possibly modified termination control and reset DIS_TERM_DRV
5210         * bits in the Microcode SCSI_CFG1 Register Value.
5211         *
5212         * The microcode will set the SCSI_CFG1 register using this value
5213         * after it is started below.
5214         */
5215        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SCSI_CFG1, scsi_cfg1);
5216
5217        /*
5218         * Set MEM_CFG Microcode Default Value
5219         *
5220         * The microcode will set the MEM_CFG register using this value
5221         * after it is started below.
5222         *
5223         * MEM_CFG may be accessed as a word or byte, but only bits 0-7
5224         * are defined.
5225         *
5226         * ASC-38C0800 has 16KB internal memory.
5227         */
5228        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_MEM_CFG,
5229                         BIOS_EN | RAM_SZ_16KB);
5230
5231        /*
5232         * Set SEL_MASK Microcode Default Value
5233         *
5234         * The microcode will set the SEL_MASK register using this value
5235         * after it is started below.
5236         */
5237        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SEL_MASK,
5238                         ADV_TID_TO_TIDMASK(asc_dvc->chip_scsi_id));
5239
5240        AdvBuildCarrierFreelist(asc_dvc);
5241
5242        /*
5243         * Set-up the Host->RISC Initiator Command Queue (ICQ).
5244         */
5245
5246        asc_dvc->icq_sp = adv_get_next_carrier(asc_dvc);
5247        if (!asc_dvc->icq_sp) {
5248                ASC_DBG(0, "Failed to get ICQ carrier\n");
5249                asc_dvc->err_code |= ASC_IERR_NO_CARRIER;
5250                return ADV_ERROR;
5251        }
5252
5253        /*
5254         * Set RISC ICQ physical address start value.
5255         * carr_pa is LE, must be native before write
5256         */
5257        AdvWriteDWordLramNoSwap(iop_base, ASC_MC_ICQ, asc_dvc->icq_sp->carr_pa);
5258
5259        /*
5260         * Set-up the RISC->Host Initiator Response Queue (IRQ).
5261         */
5262        asc_dvc->irq_sp = adv_get_next_carrier(asc_dvc);
5263        if (!asc_dvc->irq_sp) {
5264                ASC_DBG(0, "Failed to get IRQ carrier\n");
5265                asc_dvc->err_code |= ASC_IERR_NO_CARRIER;
5266                return ADV_ERROR;
5267        }
5268
5269        /*
5270         * Set RISC IRQ physical address start value.
5271         *
5272         * carr_pa is LE, must be native before write *
5273         */
5274        AdvWriteDWordLramNoSwap(iop_base, ASC_MC_IRQ, asc_dvc->irq_sp->carr_pa);
5275        asc_dvc->carr_pending_cnt = 0;
5276
5277        AdvWriteByteRegister(iop_base, IOPB_INTR_ENABLES,
5278                             (ADV_INTR_ENABLE_HOST_INTR |
5279                              ADV_INTR_ENABLE_GLOBAL_INTR));
5280
5281        AdvReadWordLram(iop_base, ASC_MC_CODE_BEGIN_ADDR, word);
5282        AdvWriteWordRegister(iop_base, IOPW_PC, word);
5283
5284        /* finally, finally, gentlemen, start your engine */
5285        AdvWriteWordRegister(iop_base, IOPW_RISC_CSR, ADV_RISC_CSR_RUN);
5286
5287        /*
5288         * Reset the SCSI Bus if the EEPROM indicates that SCSI Bus
5289         * Resets should be performed. The RISC has to be running
5290         * to issue a SCSI Bus Reset.
5291         */
5292        if (asc_dvc->bios_ctrl & BIOS_CTRL_RESET_SCSI_BUS) {
5293                /*
5294                 * If the BIOS Signature is present in memory, restore the
5295                 * BIOS Handshake Configuration Table and do not perform
5296                 * a SCSI Bus Reset.
5297                 */
5298                if (bios_mem[(ASC_MC_BIOS_SIGNATURE - ASC_MC_BIOSMEM) / 2] ==
5299                    0x55AA) {
5300                        /*
5301                         * Restore per TID negotiated values.
5302                         */
5303                        AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
5304                        AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
5305                        AdvWriteWordLram(iop_base, ASC_MC_TAGQNG_ABLE,
5306                                         tagqng_able);
5307                        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
5308                                AdvWriteByteLram(iop_base,
5309                                                 ASC_MC_NUMBER_OF_MAX_CMD + tid,
5310                                                 max_cmd[tid]);
5311                        }
5312                } else {
5313                        if (AdvResetSB(asc_dvc) != ADV_TRUE) {
5314                                warn_code = ASC_WARN_BUSRESET_ERROR;
5315                        }
5316                }
5317        }
5318
5319        return warn_code;
5320}
5321
5322/*
5323 * Initialize the ASC-38C1600.
5324 *
5325 * On failure set the ASC_DVC_VAR field 'err_code' and return ADV_ERROR.
5326 *
5327 * For a non-fatal error return a warning code. If there are no warnings
5328 * then 0 is returned.
5329 *
5330 * Needed after initialization for error recovery.
5331 */
5332static int AdvInitAsc38C1600Driver(ADV_DVC_VAR *asc_dvc)
5333{
5334        const struct firmware *fw;
5335        const char fwname[] = "advansys/38C1600.bin";
5336        AdvPortAddr iop_base;
5337        ushort warn_code;
5338        int begin_addr;
5339        int end_addr;
5340        ushort code_sum;
5341        long word;
5342        int i;
5343        int err;
5344        unsigned long chksum;
5345        ushort scsi_cfg1;
5346        uchar byte;
5347        uchar tid;
5348        ushort bios_mem[ASC_MC_BIOSLEN / 2];    /* BIOS RISC Memory 0x40-0x8F. */
5349        ushort wdtr_able, sdtr_able, ppr_able, tagqng_able;
5350        uchar max_cmd[ASC_MAX_TID + 1];
5351
5352        /* If there is already an error, don't continue. */
5353        if (asc_dvc->err_code != 0) {
5354                return ADV_ERROR;
5355        }
5356
5357        /*
5358         * The caller must set 'chip_type' to ADV_CHIP_ASC38C1600.
5359         */
5360        if (asc_dvc->chip_type != ADV_CHIP_ASC38C1600) {
5361                asc_dvc->err_code = ASC_IERR_BAD_CHIPTYPE;
5362                return ADV_ERROR;
5363        }
5364
5365        warn_code = 0;
5366        iop_base = asc_dvc->iop_base;
5367
5368        /*
5369         * Save the RISC memory BIOS region before writing the microcode.
5370         * The BIOS may already be loaded and using its RISC LRAM region
5371         * so its region must be saved and restored.
5372         *
5373         * Note: This code makes the assumption, which is currently true,
5374         * that a chip reset does not clear RISC LRAM.
5375         */
5376        for (i = 0; i < ASC_MC_BIOSLEN / 2; i++) {
5377                AdvReadWordLram(iop_base, ASC_MC_BIOSMEM + (2 * i),
5378                                bios_mem[i]);
5379        }
5380
5381        /*
5382         * Save current per TID negotiated values.
5383         */
5384        AdvReadWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
5385        AdvReadWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
5386        AdvReadWordLram(iop_base, ASC_MC_PPR_ABLE, ppr_able);
5387        AdvReadWordLram(iop_base, ASC_MC_TAGQNG_ABLE, tagqng_able);
5388        for (tid = 0; tid <= ASC_MAX_TID; tid++) {
5389                AdvReadByteLram(iop_base, ASC_MC_NUMBER_OF_MAX_CMD + tid,
5390                                max_cmd[tid]);
5391        }
5392
5393        /*
5394         * RAM BIST (Built-In Self Test)
5395         *
5396         * Address : I/O base + offset 0x38h register (byte).
5397         * Function: Bit 7-6(RW) : RAM mode
5398         *                          Normal Mode   : 0x00
5399         *                          Pre-test Mode : 0x40
5400         *                          RAM Test Mode : 0x80
5401         *           Bit 5       : unused
5402         *           Bit 4(RO)   : Done bit
5403         *           Bit 3-0(RO) : Status
5404         *                          Host Error    : 0x08
5405         *                          Int_RAM Error : 0x04
5406         *                          RISC Error    : 0x02
5407         *                          SCSI Error    : 0x01
5408         *                          No Error      : 0x00
5409         *
5410         * Note: RAM BIST code should be put right here, before loading the
5411         * microcode and after saving the RISC memory BIOS region.
5412         */
5413
5414        /*
5415         * LRAM Pre-test
5416         *
5417         * Write PRE_TEST_MODE (0x40) to register and wait for 10 milliseconds.
5418         * If Done bit not set or low nibble not PRE_TEST_VALUE (0x05), return
5419         * an error. Reset to NORMAL_MODE (0x00) and do again. If cannot reset
5420         * to NORMAL_MODE, return an error too.
5421         */
5422        for (i = 0; i < 2; i++) {
5423                AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, PRE_TEST_MODE);
5424                mdelay(10);     /* Wait for 10ms before reading back. */
5425                byte = AdvReadByteRegister(iop_base, IOPB_RAM_BIST);
5426                if ((byte & RAM_TEST_DONE) == 0
5427                    || (byte & 0x0F) != PRE_TEST_VALUE) {
5428                        asc_dvc->err_code = ASC_IERR_BIST_PRE_TEST;
5429                        return ADV_ERROR;
5430                }
5431
5432                AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, NORMAL_MODE);
5433                mdelay(10);     /* Wait for 10ms before reading back. */
5434                if (AdvReadByteRegister(iop_base, IOPB_RAM_BIST)
5435                    != NORMAL_VALUE) {
5436                        asc_dvc->err_code = ASC_IERR_BIST_PRE_TEST;
5437                        return ADV_ERROR;
5438                }
5439        }
5440
5441        /*
5442         * LRAM Test - It takes about 1.5 ms to run through the test.
5443         *
5444         * Write RAM_TEST_MODE (0x80) to register and wait for 10 milliseconds.
5445         * If Done bit not set or Status not 0, save register byte, set the
5446         * err_code, and return an error.
5447         */
5448        AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, RAM_TEST_MODE);
5449        mdelay(10);     /* Wait for 10ms before checking status. */
5450
5451        byte = AdvReadByteRegister(iop_base, IOPB_RAM_BIST);
5452        if ((byte & RAM_TEST_DONE) == 0 || (byte & RAM_TEST_STATUS) != 0) {
5453                /* Get here if Done bit not set or Status not 0. */
5454                asc_dvc->bist_err_code = byte;  /* for BIOS display message */
5455                asc_dvc->err_code = ASC_IERR_BIST_RAM_TEST;
5456                return ADV_ERROR;
5457        }
5458
5459        /* We need to reset back to normal mode after LRAM test passes. */
5460        AdvWriteByteRegister(iop_base, IOPB_RAM_BIST, NORMAL_MODE);
5461
5462        err = request_firmware(&fw, fwname, asc_dvc->drv_ptr->dev);
5463        if (err) {
5464                printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
5465                       fwname, err);
5466                asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
5467                return err;
5468        }
5469        if (fw->size < 4) {
5470                printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
5471                       fw->size, fwname);
5472                release_firmware(fw);
5473                asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
5474                return -EINVAL;
5475        }
5476        chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |
5477                 (fw->data[1] << 8) | fw->data[0];
5478        asc_dvc->err_code = AdvLoadMicrocode(iop_base, &fw->data[4],
5479                                             fw->size - 4, ADV_38C1600_MEMSIZE,
5480                                             chksum);
5481        release_firmware(fw);
5482        if (asc_dvc->err_code)
5483                return ADV_ERROR;
5484
5485        /*
5486         * Restore the RISC memory BIOS region.
5487         */
5488        for (i = 0; i < ASC_MC_BIOSLEN / 2; i++) {
5489                AdvWriteWordLram(iop_base, ASC_MC_BIOSMEM + (2 * i),
5490                                 bios_mem[i]);
5491        }
5492
5493        /*
5494         * Calculate and write the microcode code checksum to the microcode
5495         * code checksum location ASC_MC_CODE_CHK_SUM (0x2C).
5496         */
5497        AdvReadWordLram(iop_base, ASC_MC_CODE_BEGIN_ADDR, begin_addr);
5498        AdvReadWordLram(iop_base, ASC_MC_CODE_END_ADDR, end_addr);
5499        code_sum = 0;
5500        AdvWriteWordRegister(iop_base, IOPW_RAM_ADDR, begin_addr);
5501        for (word = begin_addr; word < end_addr; word += 2) {
5502                code_sum += AdvReadWordAutoIncLram(iop_base);
5503        }
5504        AdvWriteWordLram(iop_base, ASC_MC_CODE_CHK_SUM, code_sum);
5505
5506        /*
5507         * Read microcode version and date.
5508         */
5509        AdvReadWordLram(iop_base, ASC_MC_VERSION_DATE,
5510                        asc_dvc->cfg->mcode_date);
5511        AdvReadWordLram(iop_base, ASC_MC_VERSION_NUM,
5512                        asc_dvc->cfg->mcode_version);
5513
5514        /*
5515         * Set the chip type to indicate the ASC38C1600.
5516         */
5517        AdvWriteWordLram(iop_base, ASC_MC_CHIP_TYPE, ADV_CHIP_ASC38C1600);
5518
5519        /*
5520         * Write 1 to bit 14 'DIS_TERM_DRV' in the SCSI_CFG1 register.
5521         * When DIS_TERM_DRV set to 1, C_DET[3:0] will reflect current
5522         * cable detection and then we are able to read C_DET[3:0].
5523         *
5524         * Note: We will reset DIS_TERM_DRV to 0 in the 'Set SCSI_CFG1
5525         * Microcode Default Value' section below.
5526         */
5527        scsi_cfg1 = AdvReadWordRegister(iop_base, IOPW_SCSI_CFG1);
5528        AdvWriteWordRegister(iop_base, IOPW_SCSI_CFG1,
5529                             scsi_cfg1 | DIS_TERM_DRV);
5530
5531        /*
5532         * If the PCI Configuration Command Register "Parity Error Response
5533         * Control" Bit was clear (0), then set the microcode variable
5534         * 'control_flag' CONTROL_FLAG_IGNORE_PERR flag to tell the microcode
5535         * to ignore DMA parity errors.
5536         */
5537        if (asc_dvc->cfg->control_flag & CONTROL_FLAG_IGNORE_PERR) {
5538                AdvReadWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
5539                word |= CONTROL_FLAG_IGNORE_PERR;
5540                AdvWriteWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
5541        }
5542
5543        /*
5544         * If the BIOS control flag AIPP (Asynchronous Information
5545         * Phase Protection) disable bit is not set, then set the firmware
5546         * 'control_flag' CONTROL_FLAG_ENABLE_AIPP bit to enable
5547         * AIPP checking and encoding.
5548         */
5549        if ((asc_dvc->bios_ctrl & BIOS_CTRL_AIPP_DIS) == 0) {
5550                AdvReadWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
5551                word |= CONTROL_FLAG_ENABLE_AIPP;
5552                AdvWriteWordLram(iop_base, ASC_MC_CONTROL_FLAG, word);
5553        }
5554
5555        /*
5556         * For ASC-38C1600 use DMA_CFG0 default values: FIFO_THRESH_80B [6:4],
5557         * and START_CTL_TH [3:2].
5558         */
5559        AdvWriteByteRegister(iop_base, IOPB_DMA_CFG0,
5560                             FIFO_THRESH_80B | START_CTL_TH | READ_CMD_MRM);
5561
5562        /*
5563         * Microcode operating variables for WDTR, SDTR, and command tag
5564         * queuing will be set in slave_configure() based on what a
5565         * device reports it is capable of in Inquiry byte 7.
5566         *
5567         * If SCSI Bus Resets have been disabled, then directly set
5568         * SDTR and WDTR from the EEPROM configuration. This will allow
5569         * the BIOS and warm boot to work without a SCSI bus hang on
5570         * the Inquiry caused by host and target mismatched DTR values.
5571         * Without the SCSI Bus Reset, before an Inquiry a device can't
5572         * be assumed to be in Asynchronous, Narrow mode.
5573         */
5574        if ((asc_dvc->bios_ctrl & BIOS_CTRL_RESET_SCSI_BUS) == 0) {
5575                AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE,
5576                                 asc_dvc->wdtr_able);
5577                AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE,
5578                                 asc_dvc->sdtr_able);
5579        }
5580
5581        /*
5582         * Set microcode operating variables for DISC and SDTR_SPEED1,
5583         * SDTR_SPEED2, SDTR_SPEED3, and SDTR_SPEED4 based on the EEPROM
5584         * configuration values.
5585         *
5586         * The SDTR per TID bitmask overrides the SDTR_SPEED1, SDTR_SPEED2,
5587         * SDTR_SPEED3, and SDTR_SPEED4 values so it is safe to set them
5588         * without determining here whether the device supports SDTR.
5589         */
5590        AdvWriteWordLram(iop_base, ASC_MC_DISC_ENABLE,
5591                         asc_dvc->cfg->disc_enable);
5592        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED1, asc_dvc->sdtr_speed1);
5593        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED2, asc_dvc->sdtr_speed2);
5594        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED3, asc_dvc->sdtr_speed3);
5595        AdvWriteWordLram(iop_base, ASC_MC_SDTR_SPEED4, asc_dvc->sdtr_speed4);
5596
5597        /*
5598         * Set SCSI_CFG0 Microcode Default Value.
5599         *
5600         * The microcode will set the SCSI_CFG0 register using this value
5601         * after it is started below.
5602         */
5603        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SCSI_CFG0,
5604                         PARITY_EN | QUEUE_128 | SEL_TMO_LONG | OUR_ID_EN |
5605                         asc_dvc->chip_scsi_id);
5606
5607        /*
5608         * Calculate SCSI_CFG1 Microcode Default Value.
5609         *
5610         * The microcode will set the SCSI_CFG1 register using this value
5611         * after it is started below.
5612         *
5613         * Each ASC-38C1600 function has only two cable detect bits.
5614         * The bus mode override bits are in IOPB_SOFT_OVER_WR.
5615         */
5616        scsi_cfg1 = AdvReadWordRegister(iop_base, IOPW_SCSI_CFG1);
5617
5618        /*
5619         * If the cable is reversed all of the SCSI_CTRL register signals
5620         * will be set. Check for and return an error if this condition is
5621         * found.
5622         */
5623        if ((AdvReadWordRegister(iop_base, IOPW_SCSI_CTRL) & 0x3F07) == 0x3F07) {
5624                asc_dvc->err_code |= ASC_IERR_REVERSED_CABLE;
5625                return ADV_ERROR;
5626        }
5627
5628        /*
5629         * Each ASC-38C1600 function has two connectors. Only an HVD device
5630         * can not be connected to either connector. An LVD device or SE device
5631         * may be connected to either connecor. If an SE device is connected,
5632         * then at most Ultra speed (20 Mhz) can be used on both connectors.
5633         *
5634         * If an HVD device is attached, return an error.
5635         */
5636        if (scsi_cfg1 & HVD) {
5637                asc_dvc->err_code |= ASC_IERR_HVD_DEVICE;
5638                return ADV_ERROR;
5639        }
5640
5641        /*
5642         * Each function in the ASC-38C1600 uses only the SE cable detect and
5643         * termination because there are two connectors for each function. Each
5644         * function may use either LVD or SE mode. Corresponding the SE automatic
5645         * termination control EEPROM bits are used for each function. Each
5646         * function has its own EEPROM. If SE automatic control is enabled for
5647         * the function, then set the termination value based on a table listed
5648         * in a_condor.h.
5649         *
5650         * If manual termination is specified in the EEPROM for the function,
5651         * then 'termination' was set-up in AscInitFrom38C1600EEPROM() and is
5652         * ready to be 'ored' into SCSI_CFG1.
5653         */
5654        if ((asc_dvc->cfg->termination & TERM_SE) == 0) {
5655                struct pci_dev *pdev = adv_dvc_to_pdev(asc_dvc);
5656                /* SE automatic termination control is enabled. */
5657                switch (scsi_cfg1 & C_DET_SE) {
5658                        /* TERM_SE_HI: on, TERM_SE_LO: on */
5659                case 0x1:
5660                case 0x2:
5661                case 0x3:
5662                        asc_dvc->cfg->termination |= TERM_SE;
5663                        break;
5664
5665                case 0x0:
5666                        if (PCI_FUNC(pdev->devfn) == 0) {
5667                                /* Function 0 - TERM_SE_HI: off, TERM_SE_LO: off */
5668                        } else {
5669                                /* Function 1 - TERM_SE_HI: on, TERM_SE_LO: off */
5670                                asc_dvc->cfg->termination |= TERM_SE_HI;
5671                        }
5672                        break;
5673                }
5674        }
5675
5676        /*
5677         * Clear any set TERM_SE bits.
5678         */
5679        scsi_cfg1 &= ~TERM_SE;
5680
5681        /*
5682         * Invert the TERM_SE bits and then set 'scsi_cfg1'.
5683         */
5684        scsi_cfg1 |= (~asc_dvc->cfg->termination & TERM_SE);
5685
5686        /*
5687         * Clear Big Endian and Terminator Polarity bits and set possibly
5688         * modified termination control bits in the Microcode SCSI_CFG1
5689         * Register Value.
5690         *
5691         * Big Endian bit is not used even on big endian machines.
5692         */
5693        scsi_cfg1 &= (~BIG_ENDIAN & ~DIS_TERM_DRV & ~TERM_POL);
5694
5695        /*
5696         * Set SCSI_CFG1 Microcode Default Value
5697         *
5698         * Set possibly modified termination control bits in the Microcode
5699         * SCSI_CFG1 Register Value.
5700         *
5701         * The microcode will set the SCSI_CFG1 register using this value
5702         * after it is started below.
5703         */
5704        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SCSI_CFG1, scsi_cfg1);
5705
5706        /*
5707         * Set MEM_CFG Microcode Default Value
5708         *
5709         * The microcode will set the MEM_CFG register using this value
5710         * after it is started below.
5711         *
5712         * MEM_CFG may be accessed as a word or byte, but only bits 0-7
5713         * are defined.
5714         *
5715         * ASC-38C1600 has 32KB internal memory.
5716         *
5717         * XXX - Since ASC38C1600 Rev.3 has a Local RAM failure issue, we come
5718         * out a special 16K Adv Library and Microcode version. After the issue
5719         * resolved, we should turn back to the 32K support. Both a_condor.h and
5720         * mcode.sas files also need to be updated.
5721         *
5722         * AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_MEM_CFG,
5723         *  BIOS_EN | RAM_SZ_32KB);
5724         */
5725        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_MEM_CFG,
5726                         BIOS_EN | RAM_SZ_16KB);
5727
5728        /*
5729         * Set SEL_MASK Microcode Default Value
5730         *
5731         * The microcode will set the SEL_MASK register using this value
5732         * after it is started below.
5733         */
5734        AdvWriteWordLram(iop_base, ASC_MC_DEFAULT_SEL_MASK,
5735                         ADV_TID_TO_TIDMASK(asc_dvc->chip_scsi_id));
5736
5737        AdvBuildCarrierFreelist(asc_dvc);
5738
5739        /*
5740         * Set-up the Host->RISC Initiator Command Queue (ICQ).
5741         */
5742        asc_dvc->icq_sp = adv_get_next_carrier(asc_dvc);
5743        if (!asc_dvc->icq_sp) {
5744                asc_dvc->err_code |= ASC_IERR_NO_CARRIER;
5745                return ADV_ERROR;
5746        }
5747
5748        /*
5749         * Set RISC ICQ physical address start value. Initialize the
5750         * COMMA register to the same value otherwise the RISC will
5751         * prematurely detect a command is available.
5752         */
5753        AdvWriteDWordLramNoSwap(iop_base, ASC_MC_ICQ, asc_dvc->icq_sp->carr_pa);
5754        AdvWriteDWordRegister(iop_base, IOPDW_COMMA,
5755                              le32_to_cpu(asc_dvc->icq_sp->carr_pa));
5756
5757        /*
5758         * Set-up the RISC->Host Initiator Response Queue (IRQ).
5759         */
5760        asc_dvc->irq_sp = adv_get_next_carrier(asc_dvc);
5761        if (!asc_dvc->irq_sp) {
5762                asc_dvc->err_code |= ASC_IERR_NO_CARRIER;
5763                return ADV_ERROR;
5764        }
5765
5766        /*
5767         * Set RISC IRQ physical address start value.
5768         */
5769        AdvWriteDWordLramNoSwap(iop_base, ASC_MC_IRQ, asc_dvc->irq_sp->carr_pa);
5770        asc_dvc->carr_pending_cnt = 0;
5771
5772        AdvWriteByteRegister(iop_base, IOPB_INTR_ENABLES,
5773                             (ADV_INTR_ENABLE_HOST_INTR |
5774                              ADV_INTR_ENABLE_GLOBAL_INTR));
5775        AdvReadWordLram(iop_base, ASC_MC_CODE_BEGIN_ADDR, word);
5776        AdvWriteWordRegister(iop_base, IOPW_PC, word);
5777
5778        /* finally, finally, gentlemen, start your engine */
5779        AdvWriteWordRegister(iop_base, IOPW_RISC_CSR, ADV_RISC_CSR_RUN);
5780
5781        /*
5782         * Reset the SCSI Bus if the EEPROM indicates that SCSI Bus
5783         * Resets should be performed. The RISC has to be running
5784         * to issue a SCSI Bus Reset.
5785         */
5786        if (asc_dvc->bios_ctrl & BIOS_CTRL_RESET_SCSI_BUS) {
5787                /*
5788                 * If the BIOS Signature is present in memory, restore the
5789                 * per TID microcode operating variables.
5790                 */
5791                if (bios_mem[(ASC_MC_BIOS_SIGNATURE - ASC_MC_BIOSMEM) / 2] ==
5792                    0x55AA) {
5793                        /*
5794                         * Restore per TID negotiated values.
5795                         */
5796                        AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
5797                        AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
5798                        AdvWriteWordLram(iop_base, ASC_MC_PPR_ABLE, ppr_able);
5799                        AdvWriteWordLram(iop_base, ASC_MC_TAGQNG_ABLE,
5800                                         tagqng_able);
5801                        for (tid = 0; tid <= ASC_MAX_TID; tid++) {
5802                                AdvWriteByteLram(iop_base,
5803                                                 ASC_MC_NUMBER_OF_MAX_CMD + tid,
5804                                                 max_cmd[tid]);
5805                        }
5806                } else {
5807                        if (AdvResetSB(asc_dvc) != ADV_TRUE) {
5808                                warn_code = ASC_WARN_BUSRESET_ERROR;
5809                        }
5810                }
5811        }
5812
5813        return warn_code;
5814}
5815
5816/*
5817 * Reset chip and SCSI Bus.
5818 *
5819 * Return Value:
5820 *      ADV_TRUE(1) -   Chip re-initialization and SCSI Bus Reset successful.
5821 *      ADV_FALSE(0) -  Chip re-initialization and SCSI Bus Reset failure.
5822 */
5823static int AdvResetChipAndSB(ADV_DVC_VAR *asc_dvc)
5824{
5825        int status;
5826        ushort wdtr_able, sdtr_able, tagqng_able;
5827        ushort ppr_able = 0;
5828        uchar tid, max_cmd[ADV_MAX_TID + 1];
5829        AdvPortAddr iop_base;
5830        ushort bios_sig;
5831
5832        iop_base = asc_dvc->iop_base;
5833
5834        /*
5835         * Save current per TID negotiated values.
5836         */
5837        AdvReadWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
5838        AdvReadWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
5839        if (asc_dvc->chip_type == ADV_CHIP_ASC38C1600) {
5840                AdvReadWordLram(iop_base, ASC_MC_PPR_ABLE, ppr_able);
5841        }
5842        AdvReadWordLram(iop_base, ASC_MC_TAGQNG_ABLE, tagqng_able);
5843        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
5844                AdvReadByteLram(iop_base, ASC_MC_NUMBER_OF_MAX_CMD + tid,
5845                                max_cmd[tid]);
5846        }
5847
5848        /*
5849         * Force the AdvInitAsc3550/38C0800Driver() function to
5850         * perform a SCSI Bus Reset by clearing the BIOS signature word.
5851         * The initialization functions assumes a SCSI Bus Reset is not
5852         * needed if the BIOS signature word is present.
5853         */
5854        AdvReadWordLram(iop_base, ASC_MC_BIOS_SIGNATURE, bios_sig);
5855        AdvWriteWordLram(iop_base, ASC_MC_BIOS_SIGNATURE, 0);
5856
5857        /*
5858         * Stop chip and reset it.
5859         */
5860        AdvWriteWordRegister(iop_base, IOPW_RISC_CSR, ADV_RISC_CSR_STOP);
5861        AdvWriteWordRegister(iop_base, IOPW_CTRL_REG, ADV_CTRL_REG_CMD_RESET);
5862        mdelay(100);
5863        AdvWriteWordRegister(iop_base, IOPW_CTRL_REG,
5864                             ADV_CTRL_REG_CMD_WR_IO_REG);
5865
5866        /*
5867         * Reset Adv Library error code, if any, and try
5868         * re-initializing the chip.
5869         */
5870        asc_dvc->err_code = 0;
5871        if (asc_dvc->chip_type == ADV_CHIP_ASC38C1600) {
5872                status = AdvInitAsc38C1600Driver(asc_dvc);
5873        } else if (asc_dvc->chip_type == ADV_CHIP_ASC38C0800) {
5874                status = AdvInitAsc38C0800Driver(asc_dvc);
5875        } else {
5876                status = AdvInitAsc3550Driver(asc_dvc);
5877        }
5878
5879        /* Translate initialization return value to status value. */
5880        if (status == 0) {
5881                status = ADV_TRUE;
5882        } else {
5883                status = ADV_FALSE;
5884        }
5885
5886        /*
5887         * Restore the BIOS signature word.
5888         */
5889        AdvWriteWordLram(iop_base, ASC_MC_BIOS_SIGNATURE, bios_sig);
5890
5891        /*
5892         * Restore per TID negotiated values.
5893         */
5894        AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
5895        AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
5896        if (asc_dvc->chip_type == ADV_CHIP_ASC38C1600) {
5897                AdvWriteWordLram(iop_base, ASC_MC_PPR_ABLE, ppr_able);
5898        }
5899        AdvWriteWordLram(iop_base, ASC_MC_TAGQNG_ABLE, tagqng_able);
5900        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
5901                AdvWriteByteLram(iop_base, ASC_MC_NUMBER_OF_MAX_CMD + tid,
5902                                 max_cmd[tid]);
5903        }
5904
5905        return status;
5906}
5907
5908/*
5909 * adv_async_callback() - Adv Library asynchronous event callback function.
5910 */
5911static void adv_async_callback(ADV_DVC_VAR *adv_dvc_varp, uchar code)
5912{
5913        switch (code) {
5914        case ADV_ASYNC_SCSI_BUS_RESET_DET:
5915                /*
5916                 * The firmware detected a SCSI Bus reset.
5917                 */
5918                ASC_DBG(0, "ADV_ASYNC_SCSI_BUS_RESET_DET\n");
5919                break;
5920
5921        case ADV_ASYNC_RDMA_FAILURE:
5922                /*
5923                 * Handle RDMA failure by resetting the SCSI Bus and
5924                 * possibly the chip if it is unresponsive. Log the error
5925                 * with a unique code.
5926                 */
5927                ASC_DBG(0, "ADV_ASYNC_RDMA_FAILURE\n");
5928                AdvResetChipAndSB(adv_dvc_varp);
5929                break;
5930
5931        case ADV_HOST_SCSI_BUS_RESET:
5932                /*
5933                 * Host generated SCSI bus reset occurred.
5934                 */
5935                ASC_DBG(0, "ADV_HOST_SCSI_BUS_RESET\n");
5936                break;
5937
5938        default:
5939                ASC_DBG(0, "unknown code 0x%x\n", code);
5940                break;
5941        }
5942}
5943
5944/*
5945 * adv_isr_callback() - Second Level Interrupt Handler called by AdvISR().
5946 *
5947 * Callback function for the Wide SCSI Adv Library.
5948 */
5949static void adv_isr_callback(ADV_DVC_VAR *adv_dvc_varp, ADV_SCSI_REQ_Q *scsiqp)
5950{
5951        struct asc_board *boardp = adv_dvc_varp->drv_ptr;
5952        adv_req_t *reqp;
5953        adv_sgblk_t *sgblkp;
5954        struct scsi_cmnd *scp;
5955        u32 resid_cnt;
5956        dma_addr_t sense_addr;
5957
5958        ASC_DBG(1, "adv_dvc_varp 0x%p, scsiqp 0x%p\n",
5959                adv_dvc_varp, scsiqp);
5960        ASC_DBG_PRT_ADV_SCSI_REQ_Q(2, scsiqp);
5961
5962        /*
5963         * Get the adv_req_t structure for the command that has been
5964         * completed. The adv_req_t structure actually contains the
5965         * completed ADV_SCSI_REQ_Q structure.
5966         */
5967        scp = scsi_host_find_tag(boardp->shost, scsiqp->srb_tag);
5968
5969        ASC_DBG(1, "scp 0x%p\n", scp);
5970        if (scp == NULL) {
5971                ASC_PRINT
5972                    ("adv_isr_callback: scp is NULL; adv_req_t dropped.\n");
5973                return;
5974        }
5975        ASC_DBG_PRT_CDB(2, scp->cmnd, scp->cmd_len);
5976
5977        reqp = (adv_req_t *)scp->host_scribble;
5978        ASC_DBG(1, "reqp 0x%lx\n", (ulong)reqp);
5979        if (reqp == NULL) {
5980                ASC_PRINT("adv_isr_callback: reqp is NULL\n");
5981                return;
5982        }
5983        /*
5984         * Remove backreferences to avoid duplicate
5985         * command completions.
5986         */
5987        scp->host_scribble = NULL;
5988        reqp->cmndp = NULL;
5989
5990        ASC_STATS(boardp->shost, callback);
5991        ASC_DBG(1, "shost 0x%p\n", boardp->shost);
5992
5993        sense_addr = le32_to_cpu(scsiqp->sense_addr);
5994        dma_unmap_single(boardp->dev, sense_addr,
5995                         SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
5996
5997        /*
5998         * 'done_status' contains the command's ending status.
5999         */
6000        switch (scsiqp->done_status) {

6001        case QD_NO_ERROR:
6002                ASC_DBG(2, "QD_NO_ERROR\n");
6003                scp->result = 0;
6004
6005                /*
6006                 * Check for an underrun condition.
6007                 *
6008                 * If there was no error and an underrun condition, then
6009                 * then return the number of underrun bytes.
6010                 */
6011                resid_cnt = le32_to_cpu(scsiqp->data_cnt);
6012                if (scsi_bufflen(scp) != 0 && resid_cnt != 0 &&
6013                    resid_cnt <= scsi_bufflen(scp)) {
6014                        ASC_DBG(1, "underrun condition %lu bytes\n",
6015                                 (ulong)resid_cnt);
6016                        scsi_set_resid(scp, resid_cnt);
6017                }
6018                break;
6019
6020        case QD_WITH_ERROR:
6021                ASC_DBG(2, "QD_WITH_ERROR\n");
6022                switch (scsiqp->host_status) {
6023                case QHSTA_NO_ERROR:
6024                        if (scsiqp->scsi_status == SAM_STAT_CHECK_CONDITION) {
6025                                ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n");
6026                                ASC_DBG_PRT_SENSE(2, scp->sense_buffer,
6027                                                  SCSI_SENSE_BUFFERSIZE);
6028                                /*
6029                                 * Note: The 'status_byte()' macro used by
6030                                 * target drivers defined in scsi.h shifts the
6031                                 * status byte returned by host drivers right
6032                                 * by 1 bit.  This is why target drivers also
6033                                 * use right shifted status byte definitions.
6034                                 * For instance target drivers use
6035                                 * CHECK_CONDITION, defined to 0x1, instead of
6036                                 * the SCSI defined check condition value of
6037                                 * 0x2. Host drivers are supposed to return
6038                                 * the status byte as it is defined by SCSI.
6039                                 */
6040                                scp->result = DRIVER_BYTE(DRIVER_SENSE) |
6041                                    STATUS_BYTE(scsiqp->scsi_status);
6042                        } else {
6043                                scp->result = STATUS_BYTE(scsiqp->scsi_status);
6044                        }
6045                        break;
6046
6047                default:
6048                        /* Some other QHSTA error occurred. */
6049                        ASC_DBG(1, "host_status 0x%x\n", scsiqp->host_status);
6050                        scp->result = HOST_BYTE(DID_BAD_TARGET);
6051                        break;
6052                }
6053                break;
6054
6055        case QD_ABORTED_BY_HOST:
6056                ASC_DBG(1, "QD_ABORTED_BY_HOST\n");
6057                scp->result =
6058                    HOST_BYTE(DID_ABORT) | STATUS_BYTE(scsiqp->scsi_status);
6059                break;
6060
6061        default:
6062                ASC_DBG(1, "done_status 0x%x\n", scsiqp->done_status);
6063                scp->result =
6064                    HOST_BYTE(DID_ERROR) | STATUS_BYTE(scsiqp->scsi_status);
6065                break;
6066        }
6067
6068        /*
6069         * If the 'init_tidmask' bit isn't already set for the target and the
6070         * current request finished normally, then set the bit for the target
6071         * to indicate that a device is present.
6072         */
6073        if ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(scp->device->id)) == 0 &&
6074            scsiqp->done_status == QD_NO_ERROR &&
6075            scsiqp->host_status == QHSTA_NO_ERROR) {
6076                boardp->init_tidmask |= ADV_TID_TO_TIDMASK(scp->device->id);
6077        }
6078
6079        asc_scsi_done(scp);
6080
6081        /*
6082         * Free all 'adv_sgblk_t' structures allocated for the request.
6083         */
6084        while ((sgblkp = reqp->sgblkp) != NULL) {
6085                /* Remove 'sgblkp' from the request list. */
6086                reqp->sgblkp = sgblkp->next_sgblkp;
6087
6088                dma_pool_free(boardp->adv_sgblk_pool, sgblkp,
6089                              sgblkp->sg_addr);
6090        }
6091
6092        ASC_DBG(1, "done\n");
6093}
6094
6095/*
6096 * Adv Library Interrupt Service Routine
6097 *
6098 *  This function is called by a driver's interrupt service routine.
6099 *  The function disables and re-enables interrupts.
6100 *
6101 *  When a microcode idle command is completed, the ADV_DVC_VAR
6102 *  'idle_cmd_done' field is set to ADV_TRUE.
6103 *
6104 *  Note: AdvISR() can be called when interrupts are disabled or even
6105 *  when there is no hardware interrupt condition present. It will
6106 *  always check for completed idle commands and microcode requests.
6107 *  This is an important feature that shouldn't be changed because it
6108 *  allows commands to be completed from polling mode loops.
6109 *
6110 * Return:
6111 *   ADV_TRUE(1) - interrupt was pending
6112 *   ADV_FALSE(0) - no interrupt was pending
6113 */
6114static int AdvISR(ADV_DVC_VAR *asc_dvc)
6115{
6116        AdvPortAddr iop_base;
6117        uchar int_stat;
6118        ushort target_bit;
6119        ADV_CARR_T *free_carrp;
6120        __le32 irq_next_vpa;
6121        ADV_SCSI_REQ_Q *scsiq;
6122        adv_req_t *reqp;
6123
6124        iop_base = asc_dvc->iop_base;
6125
6126        /* Reading the register clears the interrupt. */
6127        int_stat = AdvReadByteRegister(iop_base, IOPB_INTR_STATUS_REG);
6128
6129        if ((int_stat & (ADV_INTR_STATUS_INTRA | ADV_INTR_STATUS_INTRB |
6130                         ADV_INTR_STATUS_INTRC)) == 0) {
6131                return ADV_FALSE;
6132        }
6133
6134        /*
6135         * Notify the driver of an asynchronous microcode condition by
6136         * calling the adv_async_callback function. The function
6137         * is passed the microcode ASC_MC_INTRB_CODE byte value.
6138         */
6139        if (int_stat & ADV_INTR_STATUS_INTRB) {
6140                uchar intrb_code;
6141
6142                AdvReadByteLram(iop_base, ASC_MC_INTRB_CODE, intrb_code);
6143
6144                if (asc_dvc->chip_type == ADV_CHIP_ASC3550 ||
6145                    asc_dvc->chip_type == ADV_CHIP_ASC38C0800) {
6146                        if (intrb_code == ADV_ASYNC_CARRIER_READY_FAILURE &&
6147                            asc_dvc->carr_pending_cnt != 0) {
6148                                AdvWriteByteRegister(iop_base, IOPB_TICKLE,
6149                                                     ADV_TICKLE_A);
6150                                if (asc_dvc->chip_type == ADV_CHIP_ASC3550) {
6151                                        AdvWriteByteRegister(iop_base,
6152                                                             IOPB_TICKLE,
6153                                                             ADV_TICKLE_NOP);
6154                                }
6155                        }
6156                }
6157
6158                adv_async_callback(asc_dvc, intrb_code);
6159        }
6160
6161        /*
6162         * Check if the IRQ stopper carrier contains a completed request.
6163         */
6164        while (((irq_next_vpa =
6165                 le32_to_cpu(asc_dvc->irq_sp->next_vpa)) & ADV_RQ_DONE) != 0) {
6166                /*
6167                 * Get a pointer to the newly completed ADV_SCSI_REQ_Q structure.
6168                 * The RISC will have set 'areq_vpa' to a virtual address.
6169                 *
6170                 * The firmware will have copied the ADV_SCSI_REQ_Q.scsiq_ptr
6171                 * field to the carrier ADV_CARR_T.areq_vpa field. The conversion
6172                 * below complements the conversion of ADV_SCSI_REQ_Q.scsiq_ptr'
6173                 * in AdvExeScsiQueue().
6174                 */
6175                u32 pa_offset = le32_to_cpu(asc_dvc->irq_sp->areq_vpa);
6176                ASC_DBG(1, "irq_sp %p areq_vpa %u\n",
6177                        asc_dvc->irq_sp, pa_offset);
6178                reqp = adv_get_reqp(asc_dvc, pa_offset);
6179                scsiq = &reqp->scsi_req_q;
6180
6181                /*
6182                 * Request finished with good status and the queue was not
6183                 * DMAed to host memory by the firmware. Set all status fields
6184                 * to indicate good status.
6185                 */
6186                if ((irq_next_vpa & ADV_RQ_GOOD) != 0) {
6187                        scsiq->done_status = QD_NO_ERROR;
6188                        scsiq->host_status = scsiq->scsi_status = 0;
6189                        scsiq->data_cnt = 0L;
6190                }
6191
6192                /*
6193                 * Advance the stopper pointer to the next carrier
6194                 * ignoring the lower four bits. Free the previous
6195                 * stopper carrier.
6196                 */
6197                free_carrp = asc_dvc->irq_sp;
6198                asc_dvc->irq_sp = adv_get_carrier(asc_dvc,
6199                                                  ADV_GET_CARRP(irq_next_vpa));
6200
6201                free_carrp->next_vpa = asc_dvc->carr_freelist->carr_va;
6202                asc_dvc->carr_freelist = free_carrp;
6203                asc_dvc->carr_pending_cnt--;
6204
6205                target_bit = ADV_TID_TO_TIDMASK(scsiq->target_id);
6206
6207                /*
6208                 * Clear request microcode control flag.
6209                 */
6210                scsiq->cntl = 0;
6211
6212                /*
6213                 * Notify the driver of the completed request by passing
6214                 * the ADV_SCSI_REQ_Q pointer to its callback function.
6215                 */
6216                adv_isr_callback(asc_dvc, scsiq);
6217                /*
6218                 * Note: After the driver callback function is called, 'scsiq'
6219                 * can no longer be referenced.
6220                 *
6221                 * Fall through and continue processing other completed
6222                 * requests...
6223                 */
6224        }
6225        return ADV_TRUE;
6226}
6227
6228static int AscSetLibErrorCode(ASC_DVC_VAR *asc_dvc, ushort err_code)
6229{
6230        if (asc_dvc->err_code == 0) {
6231                asc_dvc->err_code = err_code;
6232                AscWriteLramWord(asc_dvc->iop_base, ASCV_ASCDVC_ERR_CODE_W,
6233                                 err_code);
6234        }
6235        return err_code;
6236}
6237
6238static void AscAckInterrupt(PortAddr iop_base)
6239{
6240        uchar host_flag;
6241        uchar risc_flag;
6242        ushort loop;
6243
6244        loop = 0;
6245        do {
6246                risc_flag = AscReadLramByte(iop_base, ASCV_RISC_FLAG_B);
6247                if (loop++ > 0x7FFF) {
6248                        break;
6249                }
6250        } while ((risc_flag & ASC_RISC_FLAG_GEN_INT) != 0);
6251        host_flag =
6252            AscReadLramByte(iop_base,
6253                            ASCV_HOST_FLAG_B) & (~ASC_HOST_FLAG_ACK_INT);
6254        AscWriteLramByte(iop_base, ASCV_HOST_FLAG_B,
6255                         (uchar)(host_flag | ASC_HOST_FLAG_ACK_INT));
6256        AscSetChipStatus(iop_base, CIW_INT_ACK);
6257        loop = 0;
6258        while (AscGetChipStatus(iop_base) & CSW_INT_PENDING) {
6259                AscSetChipStatus(iop_base, CIW_INT_ACK);
6260                if (loop++ > 3) {
6261                        break;
6262                }
6263        }
6264        AscWriteLramByte(iop_base, ASCV_HOST_FLAG_B, host_flag);
6265}
6266
6267static uchar AscGetSynPeriodIndex(ASC_DVC_VAR *asc_dvc, uchar syn_time)
6268{
6269        const uchar *period_table;
6270        int max_index;
6271        int min_index;
6272        int i;
6273
6274        period_table = asc_dvc->sdtr_period_tbl;
6275        max_index = (int)asc_dvc->max_sdtr_index;
6276        min_index = (int)asc_dvc->min_sdtr_index;
6277        if ((syn_time <= period_table[max_index])) {
6278                for (i = min_index; i < (max_index - 1); i++) {
6279                        if (syn_time <= period_table[i]) {
6280                                return (uchar)i;
6281                        }
6282                }
6283                return (uchar)max_index;
6284        } else {
6285                return (uchar)(max_index + 1);
6286        }
6287}
6288
6289static uchar
6290AscMsgOutSDTR(ASC_DVC_VAR *asc_dvc, uchar sdtr_period, uchar sdtr_offset)
6291{
6292        PortAddr iop_base = asc_dvc->iop_base;
6293        uchar sdtr_period_index = AscGetSynPeriodIndex(asc_dvc, sdtr_period);
6294        EXT_MSG sdtr_buf = {
6295                .msg_type = EXTENDED_MESSAGE,
6296                .msg_len = MS_SDTR_LEN,
6297                .msg_req = EXTENDED_SDTR,
6298                .xfer_period = sdtr_period,
6299                .req_ack_offset = sdtr_offset,
6300        };
6301        sdtr_offset &= ASC_SYN_MAX_OFFSET;
6302
6303        if (sdtr_period_index <= asc_dvc->max_sdtr_index) {
6304                AscMemWordCopyPtrToLram(iop_base, ASCV_MSGOUT_BEG,
6305                                        (uchar *)&sdtr_buf,
6306                                        sizeof(EXT_MSG) >> 1);
6307                return ((sdtr_period_index << 4) | sdtr_offset);
6308        } else {
6309                sdtr_buf.req_ack_offset = 0;
6310                AscMemWordCopyPtrToLram(iop_base, ASCV_MSGOUT_BEG,
6311                                        (uchar *)&sdtr_buf,
6312                                        sizeof(EXT_MSG) >> 1);
6313                return 0;
6314        }
6315}
6316
6317static uchar
6318AscCalSDTRData(ASC_DVC_VAR *asc_dvc, uchar sdtr_period, uchar syn_offset)
6319{
6320        uchar byte;
6321        uchar sdtr_period_ix;
6322
6323        sdtr_period_ix = AscGetSynPeriodIndex(asc_dvc, sdtr_period);
6324        if (sdtr_period_ix > asc_dvc->max_sdtr_index)
6325                return 0xFF;
6326        byte = (sdtr_period_ix << 4) | (syn_offset & ASC_SYN_MAX_OFFSET);
6327        return byte;
6328}
6329
6330static bool AscSetChipSynRegAtID(PortAddr iop_base, uchar id, uchar sdtr_data)
6331{
6332        ASC_SCSI_BIT_ID_TYPE org_id;
6333        int i;
6334        bool sta = true;
6335
6336        AscSetBank(iop_base, 1);
6337        org_id = AscReadChipDvcID(iop_base);
6338        for (i = 0; i <= ASC_MAX_TID; i++) {
6339                if (org_id == (0x01 << i))
6340                        break;
6341        }
6342        org_id = (ASC_SCSI_BIT_ID_TYPE) i;
6343        AscWriteChipDvcID(iop_base, id);
6344        if (AscReadChipDvcID(iop_base) == (0x01 << id)) {
6345                AscSetBank(iop_base, 0);
6346                AscSetChipSyn(iop_base, sdtr_data);
6347                if (AscGetChipSyn(iop_base) != sdtr_data) {
6348                        sta = false;
6349                }
6350        } else {
6351                sta = false;
6352        }
6353        AscSetBank(iop_base, 1);
6354        AscWriteChipDvcID(iop_base, org_id);
6355        AscSetBank(iop_base, 0);
6356        return (sta);
6357}
6358
6359static void AscSetChipSDTR(PortAddr iop_base, uchar sdtr_data, uchar tid_no)
6360{
6361        AscSetChipSynRegAtID(iop_base, tid_no, sdtr_data);
6362        AscPutMCodeSDTRDoneAtID(iop_base, tid_no, sdtr_data);
6363}
6364
6365static void AscIsrChipHalted(ASC_DVC_VAR *asc_dvc)
6366{
6367        EXT_MSG ext_msg;
6368        EXT_MSG out_msg;
6369        ushort halt_q_addr;
6370        bool sdtr_accept;
6371        ushort int_halt_code;
6372        ASC_SCSI_BIT_ID_TYPE scsi_busy;
6373        ASC_SCSI_BIT_ID_TYPE target_id;
6374        PortAddr iop_base;
6375        uchar tag_code;
6376        uchar q_status;
6377        uchar halt_qp;
6378        uchar sdtr_data;
6379        uchar target_ix;
6380        uchar q_cntl, tid_no;
6381        uchar cur_dvc_qng;
6382        uchar asyn_sdtr;
6383        uchar scsi_status;
6384        struct asc_board *boardp;
6385
6386        BUG_ON(!asc_dvc->drv_ptr);
6387        boardp = asc_dvc->drv_ptr;
6388
6389        iop_base = asc_dvc->iop_base;
6390        int_halt_code = AscReadLramWord(iop_base, ASCV_HALTCODE_W);
6391
6392        halt_qp = AscReadLramByte(iop_base, ASCV_CURCDB_B);
6393        halt_q_addr = ASC_QNO_TO_QADDR(halt_qp);
6394        target_ix = AscReadLramByte(iop_base,
6395                                    (ushort)(halt_q_addr +
6396                                             (ushort)ASC_SCSIQ_B_TARGET_IX));
6397        q_cntl = AscReadLramByte(iop_base,
6398                            (ushort)(halt_q_addr + (ushort)ASC_SCSIQ_B_CNTL));
6399        tid_no = ASC_TIX_TO_TID(target_ix);
6400        target_id = (uchar)ASC_TID_TO_TARGET_ID(tid_no);
6401        if (asc_dvc->pci_fix_asyn_xfer & target_id) {
6402                asyn_sdtr = ASYN_SDTR_DATA_FIX_PCI_REV_AB;
6403        } else {
6404                asyn_sdtr = 0;
6405        }
6406        if (int_halt_code == ASC_HALT_DISABLE_ASYN_USE_SYN_FIX) {
6407                if (asc_dvc->pci_fix_asyn_xfer & target_id) {
6408                        AscSetChipSDTR(iop_base, 0, tid_no);
6409                        boardp->sdtr_data[tid_no] = 0;
6410                }
6411                AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6412                return;
6413        } else if (int_halt_code == ASC_HALT_ENABLE_ASYN_USE_SYN_FIX) {
6414                if (asc_dvc->pci_fix_asyn_xfer & target_id) {
6415                        AscSetChipSDTR(iop_base, asyn_sdtr, tid_no);
6416                        boardp->sdtr_data[tid_no] = asyn_sdtr;
6417                }
6418                AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6419                return;
6420        } else if (int_halt_code == ASC_HALT_EXTMSG_IN) {
6421                AscMemWordCopyPtrFromLram(iop_base,
6422                                          ASCV_MSGIN_BEG,
6423                                          (uchar *)&ext_msg,
6424                                          sizeof(EXT_MSG) >> 1);
6425
6426                if (ext_msg.msg_type == EXTENDED_MESSAGE &&
6427                    ext_msg.msg_req == EXTENDED_SDTR &&
6428                    ext_msg.msg_len == MS_SDTR_LEN) {
6429                        sdtr_accept = true;
6430                        if ((ext_msg.req_ack_offset > ASC_SYN_MAX_OFFSET)) {
6431
6432                                sdtr_accept = false;
6433                                ext_msg.req_ack_offset = ASC_SYN_MAX_OFFSET;
6434                        }
6435                        if ((ext_msg.xfer_period <
6436                             asc_dvc->sdtr_period_tbl[asc_dvc->min_sdtr_index])
6437                            || (ext_msg.xfer_period >
6438                                asc_dvc->sdtr_period_tbl[asc_dvc->
6439                                                         max_sdtr_index])) {
6440                                sdtr_accept = false;
6441                                ext_msg.xfer_period =
6442                                    asc_dvc->sdtr_period_tbl[asc_dvc->
6443                                                             min_sdtr_index];
6444                        }
6445                        if (sdtr_accept) {
6446                                sdtr_data =
6447                                    AscCalSDTRData(asc_dvc, ext_msg.xfer_period,
6448                                                   ext_msg.req_ack_offset);
6449                                if (sdtr_data == 0xFF) {
6450
6451                                        q_cntl |= QC_MSG_OUT;
6452                                        asc_dvc->init_sdtr &= ~target_id;
6453                                        asc_dvc->sdtr_done &= ~target_id;
6454                                        AscSetChipSDTR(iop_base, asyn_sdtr,
6455                                                       tid_no);
6456                                        boardp->sdtr_data[tid_no] = asyn_sdtr;
6457                                }
6458                        }
6459                        if (ext_msg.req_ack_offset == 0) {
6460
6461                                q_cntl &= ~QC_MSG_OUT;
6462                                asc_dvc->init_sdtr &= ~target_id;
6463                                asc_dvc->sdtr_done &= ~target_id;
6464                                AscSetChipSDTR(iop_base, asyn_sdtr, tid_no);
6465                        } else {
6466                                if (sdtr_accept && (q_cntl & QC_MSG_OUT)) {
6467                                        q_cntl &= ~QC_MSG_OUT;
6468                                        asc_dvc->sdtr_done |= target_id;
6469                                        asc_dvc->init_sdtr |= target_id;
6470                                        asc_dvc->pci_fix_asyn_xfer &=
6471                                            ~target_id;
6472                                        sdtr_data =
6473                                            AscCalSDTRData(asc_dvc,
6474                                                           ext_msg.xfer_period,
6475                                                           ext_msg.
6476                                                           req_ack_offset);
6477                                        AscSetChipSDTR(iop_base, sdtr_data,
6478                                                       tid_no);
6479                                        boardp->sdtr_data[tid_no] = sdtr_data;
6480                                } else {
6481                                        q_cntl |= QC_MSG_OUT;
6482                                        AscMsgOutSDTR(asc_dvc,
6483                                                      ext_msg.xfer_period,
6484                                                      ext_msg.req_ack_offset);
6485                                        asc_dvc->pci_fix_asyn_xfer &=
6486                                            ~target_id;
6487                                        sdtr_data =
6488                                            AscCalSDTRData(asc_dvc,
6489                                                           ext_msg.xfer_period,
6490                                                           ext_msg.
6491                                                           req_ack_offset);
6492                                        AscSetChipSDTR(iop_base, sdtr_data,
6493                                                       tid_no);
6494                                        boardp->sdtr_data[tid_no] = sdtr_data;
6495                                        asc_dvc->sdtr_done |= target_id;
6496                                        asc_dvc->init_sdtr |= target_id;
6497                                }
6498                        }
6499
6500                        AscWriteLramByte(iop_base,
6501                                         (ushort)(halt_q_addr +
6502                                                  (ushort)ASC_SCSIQ_B_CNTL),
6503                                         q_cntl);
6504                        AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6505                        return;
6506                } else if (ext_msg.msg_type == EXTENDED_MESSAGE &&
6507                           ext_msg.msg_req == EXTENDED_WDTR &&
6508                           ext_msg.msg_len == MS_WDTR_LEN) {
6509
6510                        ext_msg.wdtr_width = 0;
6511                        AscMemWordCopyPtrToLram(iop_base,
6512                                                ASCV_MSGOUT_BEG,
6513                                                (uchar *)&ext_msg,
6514                                                sizeof(EXT_MSG) >> 1);
6515                        q_cntl |= QC_MSG_OUT;
6516                        AscWriteLramByte(iop_base,
6517                                         (ushort)(halt_q_addr +
6518                                                  (ushort)ASC_SCSIQ_B_CNTL),
6519                                         q_cntl);
6520                        AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6521                        return;
6522                } else {
6523
6524                        ext_msg.msg_type = MESSAGE_REJECT;
6525                        AscMemWordCopyPtrToLram(iop_base,
6526                                                ASCV_MSGOUT_BEG,
6527                                                (uchar *)&ext_msg,
6528                                                sizeof(EXT_MSG) >> 1);
6529                        q_cntl |= QC_MSG_OUT;
6530                        AscWriteLramByte(iop_base,
6531                                         (ushort)(halt_q_addr +
6532                                                  (ushort)ASC_SCSIQ_B_CNTL),
6533                                         q_cntl);
6534                        AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6535                        return;
6536                }
6537        } else if (int_halt_code == ASC_HALT_CHK_CONDITION) {
6538
6539                q_cntl |= QC_REQ_SENSE;
6540
6541                if ((asc_dvc->init_sdtr & target_id) != 0) {
6542
6543                        asc_dvc->sdtr_done &= ~target_id;
6544
6545                        sdtr_data = AscGetMCodeInitSDTRAtID(iop_base, tid_no);
6546                        q_cntl |= QC_MSG_OUT;
6547                        AscMsgOutSDTR(asc_dvc,
6548                                      asc_dvc->
6549                                      sdtr_period_tbl[(sdtr_data >> 4) &
6550                                                      (uchar)(asc_dvc->
6551                                                              max_sdtr_index -
6552                                                              1)],
6553                                      (uchar)(sdtr_data & (uchar)
6554                                              ASC_SYN_MAX_OFFSET));
6555                }
6556
6557                AscWriteLramByte(iop_base,
6558                                 (ushort)(halt_q_addr +
6559                                          (ushort)ASC_SCSIQ_B_CNTL), q_cntl);
6560
6561                tag_code = AscReadLramByte(iop_base,
6562                                           (ushort)(halt_q_addr + (ushort)
6563                                                    ASC_SCSIQ_B_TAG_CODE));
6564                tag_code &= 0xDC;
6565                if ((asc_dvc->pci_fix_asyn_xfer & target_id)
6566                    && !(asc_dvc->pci_fix_asyn_xfer_always & target_id)
6567                    ) {
6568
6569                        tag_code |= (ASC_TAG_FLAG_DISABLE_DISCONNECT
6570                                     | ASC_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX);
6571
6572                }
6573                AscWriteLramByte(iop_base,
6574                                 (ushort)(halt_q_addr +
6575                                          (ushort)ASC_SCSIQ_B_TAG_CODE),
6576                                 tag_code);
6577
6578                q_status = AscReadLramByte(iop_base,
6579                                           (ushort)(halt_q_addr + (ushort)
6580                                                    ASC_SCSIQ_B_STATUS));
6581                q_status |= (QS_READY | QS_BUSY);
6582                AscWriteLramByte(iop_base,
6583                                 (ushort)(halt_q_addr +
6584                                          (ushort)ASC_SCSIQ_B_STATUS),
6585                                 q_status);
6586
6587                scsi_busy = AscReadLramByte(iop_base, (ushort)ASCV_SCSIBUSY_B);
6588                scsi_busy &= ~target_id;
6589                AscWriteLramByte(iop_base, (ushort)ASCV_SCSIBUSY_B, scsi_busy);
6590
6591                AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6592                return;
6593        } else if (int_halt_code == ASC_HALT_SDTR_REJECTED) {
6594
6595                AscMemWordCopyPtrFromLram(iop_base,
6596                                          ASCV_MSGOUT_BEG,
6597                                          (uchar *)&out_msg,
6598                                          sizeof(EXT_MSG) >> 1);
6599
6600                if ((out_msg.msg_type == EXTENDED_MESSAGE) &&
6601                    (out_msg.msg_len == MS_SDTR_LEN) &&
6602                    (out_msg.msg_req == EXTENDED_SDTR)) {
6603
6604                        asc_dvc->init_sdtr &= ~target_id;
6605                        asc_dvc->sdtr_done &= ~target_id;
6606                        AscSetChipSDTR(iop_base, asyn_sdtr, tid_no);
6607                        boardp->sdtr_data[tid_no] = asyn_sdtr;
6608                }
6609                q_cntl &= ~QC_MSG_OUT;
6610                AscWriteLramByte(iop_base,
6611                                 (ushort)(halt_q_addr +
6612                                          (ushort)ASC_SCSIQ_B_CNTL), q_cntl);
6613                AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6614                return;
6615        } else if (int_halt_code == ASC_HALT_SS_QUEUE_FULL) {
6616
6617                scsi_status = AscReadLramByte(iop_base,
6618                                              (ushort)((ushort)halt_q_addr +
6619                                                       (ushort)
6620                                                       ASC_SCSIQ_SCSI_STATUS));
6621                cur_dvc_qng =
6622                    AscReadLramByte(iop_base,
6623                                    (ushort)((ushort)ASC_QADR_BEG +
6624                                             (ushort)target_ix));
6625                if ((cur_dvc_qng > 0) && (asc_dvc->cur_dvc_qng[tid_no] > 0)) {
6626
6627                        scsi_busy = AscReadLramByte(iop_base,
6628                                                    (ushort)ASCV_SCSIBUSY_B);
6629                        scsi_busy |= target_id;
6630                        AscWriteLramByte(iop_base,
6631                                         (ushort)ASCV_SCSIBUSY_B, scsi_busy);
6632                        asc_dvc->queue_full_or_busy |= target_id;
6633
6634                        if (scsi_status == SAM_STAT_TASK_SET_FULL) {
6635                                if (cur_dvc_qng > ASC_MIN_TAGGED_CMD) {
6636                                        cur_dvc_qng -= 1;
6637                                        asc_dvc->max_dvc_qng[tid_no] =
6638                                            cur_dvc_qng;
6639
6640                                        AscWriteLramByte(iop_base,
6641                                                         (ushort)((ushort)
6642                                                                  ASCV_MAX_DVC_QNG_BEG
6643                                                                  + (ushort)
6644                                                                  tid_no),
6645                                                         cur_dvc_qng);
6646
6647                                        /*
6648                                         * Set the device queue depth to the
6649                                         * number of active requests when the
6650                                         * QUEUE FULL condition was encountered.
6651                                         */
6652                                        boardp->queue_full |= target_id;
6653                                        boardp->queue_full_cnt[tid_no] =
6654                                            cur_dvc_qng;
6655                                }
6656                        }
6657                }
6658                AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
6659                return;
6660        }
6661        return;
6662}
6663
6664/*
6665 * void
6666 * DvcGetQinfo(PortAddr iop_base, ushort s_addr, uchar *inbuf, int words)
6667 *
6668 * Calling/Exit State:
6669 *    none
6670 *
6671 * Description:
6672 *     Input an ASC_QDONE_INFO structure from the chip
6673 */
6674static void
6675DvcGetQinfo(PortAddr iop_base, ushort s_addr, uchar *inbuf, int words)
6676{
6677        int i;
6678        ushort word;
6679
6680        AscSetChipLramAddr(iop_base, s_addr);
6681        for (i = 0; i < 2 * words; i += 2) {
6682                if (i == 10) {
6683                        continue;
6684                }
6685                word = inpw(iop_base + IOP_RAM_DATA);
6686                inbuf[i] = word & 0xff;
6687                inbuf[i + 1] = (word >> 8) & 0xff;
6688        }
6689        ASC_DBG_PRT_HEX(2, "DvcGetQinfo", inbuf, 2 * words);
6690}
6691
6692static uchar
6693_AscCopyLramScsiDoneQ(PortAddr iop_base,
6694                      ushort q_addr,
6695                      ASC_QDONE_INFO *scsiq, unsigned int max_dma_count)
6696{
6697        ushort _val;
6698        uchar sg_queue_cnt;
6699
6700        DvcGetQinfo(iop_base,
6701                    q_addr + ASC_SCSIQ_DONE_INFO_BEG,
6702                    (uchar *)scsiq,
6703                    (sizeof(ASC_SCSIQ_2) + sizeof(ASC_SCSIQ_3)) / 2);
6704
6705        _val = AscReadLramWord(iop_base,
6706                               (ushort)(q_addr + (ushort)ASC_SCSIQ_B_STATUS));
6707        scsiq->q_status = (uchar)_val;
6708        scsiq->q_no = (uchar)(_val >> 8);
6709        _val = AscReadLramWord(iop_base,
6710                               (ushort)(q_addr + (ushort)ASC_SCSIQ_B_CNTL));
6711        scsiq->cntl = (uchar)_val;
6712        sg_queue_cnt = (uchar)(_val >> 8);
6713        _val = AscReadLramWord(iop_base,
6714                               (ushort)(q_addr +
6715                                        (ushort)ASC_SCSIQ_B_SENSE_LEN));
6716        scsiq->sense_len = (uchar)_val;
6717        scsiq->extra_bytes = (uchar)(_val >> 8);
6718
6719        /*
6720         * Read high word of remain bytes from alternate location.
6721         */
6722        scsiq->remain_bytes = (((u32)AscReadLramWord(iop_base,
6723                                                     (ushort)(q_addr +
6724                                                              (ushort)
6725                                                              ASC_SCSIQ_W_ALT_DC1)))
6726                               << 16);
6727        /*
6728         * Read low word of remain bytes from original location.
6729         */
6730        scsiq->remain_bytes += AscReadLramWord(iop_base,
6731                                               (ushort)(q_addr + (ushort)
6732                                                        ASC_SCSIQ_DW_REMAIN_XFER_CNT));
6733
6734        scsiq->remain_bytes &= max_dma_count;
6735        return sg_queue_cnt;
6736}
6737
6738/*
6739 * asc_isr_callback() - Second Level Interrupt Handler called by AscISR().
6740 *
6741 * Interrupt callback function for the Narrow SCSI Asc Library.
6742 */
6743static void asc_isr_callback(ASC_DVC_VAR *asc_dvc_varp, ASC_QDONE_INFO *qdonep)
6744{
6745        struct asc_board *boardp = asc_dvc_varp->drv_ptr;
6746        u32 srb_tag;
6747        struct scsi_cmnd *scp;
6748
6749        ASC_DBG(1, "asc_dvc_varp 0x%p, qdonep 0x%p\n", asc_dvc_varp, qdonep);
6750        ASC_DBG_PRT_ASC_QDONE_INFO(2, qdonep);
6751
6752        /*
6753         * Decrease the srb_tag by 1 to find the SCSI command
6754         */
6755        srb_tag = qdonep->d2.srb_tag - 1;
6756        scp = scsi_host_find_tag(boardp->shost, srb_tag);
6757        if (!scp)
6758                return;
6759
6760        ASC_DBG_PRT_CDB(2, scp->cmnd, scp->cmd_len);
6761
6762        ASC_STATS(boardp->shost, callback);
6763
6764        dma_unmap_single(boardp->dev, scp->SCp.dma_handle,
6765                         SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
6766        /*
6767         * 'qdonep' contains the command's ending status.
6768         */
6769        switch (qdonep->d3.done_stat) {
6770        case QD_NO_ERROR:
6771                ASC_DBG(2, "QD_NO_ERROR\n");
6772                scp->result = 0;
6773
6774                /*
6775                 * Check for an underrun condition.
6776                 *
6777                 * If there was no error and an underrun condition, then
6778                 * return the number of underrun bytes.
6779                 */
6780                if (scsi_bufflen(scp) != 0 && qdonep->remain_bytes != 0 &&
6781                    qdonep->remain_bytes <= scsi_bufflen(scp)) {
6782                        ASC_DBG(1, "underrun condition %u bytes\n",
6783                                 (unsigned)qdonep->remain_bytes);
6784                        scsi_set_resid(scp, qdonep->remain_bytes);
6785                }
6786                break;
6787
6788        case QD_WITH_ERROR:
6789                ASC_DBG(2, "QD_WITH_ERROR\n");
6790                switch (qdonep->d3.host_stat) {
6791                case QHSTA_NO_ERROR:
6792                        if (qdonep->d3.scsi_stat == SAM_STAT_CHECK_CONDITION) {
6793                                ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n");
6794                                ASC_DBG_PRT_SENSE(2, scp->sense_buffer,
6795                                                  SCSI_SENSE_BUFFERSIZE);
6796                                /*
6797                                 * Note: The 'status_byte()' macro used by
6798                                 * target drivers defined in scsi.h shifts the
6799                                 * status byte returned by host drivers right
6800                                 * by 1 bit.  This is why target drivers also
6801                                 * use right shifted status byte definitions.
6802                                 * For instance target drivers use
6803                                 * CHECK_CONDITION, defined to 0x1, instead of
6804                                 * the SCSI defined check condition value of
6805                                 * 0x2. Host drivers are supposed to return
6806                                 * the status byte as it is defined by SCSI.
6807                                 */
6808                                scp->result = DRIVER_BYTE(DRIVER_SENSE) |
6809                                    STATUS_BYTE(qdonep->d3.scsi_stat);
6810                        } else {
6811                                scp->result = STATUS_BYTE(qdonep->d3.scsi_stat);
6812                        }
6813                        break;
6814
6815                default:
6816                        /* QHSTA error occurred */
6817                        ASC_DBG(1, "host_stat 0x%x\n", qdonep->d3.host_stat);
6818                        scp->result = HOST_BYTE(DID_BAD_TARGET);
6819                        break;
6820                }
6821                break;
6822
6823        case QD_ABORTED_BY_HOST:
6824                ASC_DBG(1, "QD_ABORTED_BY_HOST\n");
6825                scp->result =
6826                    HOST_BYTE(DID_ABORT) | MSG_BYTE(qdonep->d3.
6827                                                    scsi_msg) |
6828                    STATUS_BYTE(qdonep->d3.scsi_stat);
6829                break;
6830
6831        default:
6832                ASC_DBG(1, "done_stat 0x%x\n", qdonep->d3.done_stat);
6833                scp->result =
6834                    HOST_BYTE(DID_ERROR) | MSG_BYTE(qdonep->d3.
6835                                                    scsi_msg) |
6836                    STATUS_BYTE(qdonep->d3.scsi_stat);
6837                break;
6838        }
6839
6840        /*
6841         * If the 'init_tidmask' bit isn't already set for the target and the
6842         * current request finished normally, then set the bit for the target
6843         * to indicate that a device is present.
6844         */
6845        if ((boardp->init_tidmask & ADV_TID_TO_TIDMASK(scp->device->id)) == 0 &&
6846            qdonep->d3.done_stat == QD_NO_ERROR &&
6847            qdonep->d3.host_stat == QHSTA_NO_ERROR) {
6848                boardp->init_tidmask |= ADV_TID_TO_TIDMASK(scp->device->id);
6849        }
6850
6851        asc_scsi_done(scp);
6852}
6853
6854static int AscIsrQDone(ASC_DVC_VAR *asc_dvc)
6855{
6856        uchar next_qp;
6857        uchar n_q_used;
6858        uchar sg_list_qp;
6859        uchar sg_queue_cnt;
6860        uchar q_cnt;
6861        uchar done_q_tail;
6862        uchar tid_no;
6863        ASC_SCSI_BIT_ID_TYPE scsi_busy;
6864        ASC_SCSI_BIT_ID_TYPE target_id;
6865        PortAddr iop_base;
6866        ushort q_addr;
6867        ushort sg_q_addr;
6868        uchar cur_target_qng;
6869        ASC_QDONE_INFO scsiq_buf;
6870        ASC_QDONE_INFO *scsiq;
6871        bool false_overrun;
6872
6873        iop_base = asc_dvc->iop_base;
6874        n_q_used = 1;
6875        scsiq = (ASC_QDONE_INFO *)&scsiq_buf;
6876        done_q_tail = (uchar)AscGetVarDoneQTail(iop_base);
6877        q_addr = ASC_QNO_TO_QADDR(done_q_tail);
6878        next_qp = AscReadLramByte(iop_base,
6879                                  (ushort)(q_addr + (ushort)ASC_SCSIQ_B_FWD));
6880        if (next_qp != ASC_QLINK_END) {
6881                AscPutVarDoneQTail(iop_base, next_qp);
6882                q_addr = ASC_QNO_TO_QADDR(next_qp);
6883                sg_queue_cnt = _AscCopyLramScsiDoneQ(iop_base, q_addr, scsiq,
6884                                                     asc_dvc->max_dma_count);
6885                AscWriteLramByte(iop_base,
6886                                 (ushort)(q_addr +
6887                                          (ushort)ASC_SCSIQ_B_STATUS),
6888                                 (uchar)(scsiq->
6889                                         q_status & (uchar)~(QS_READY |
6890                                                             QS_ABORTED)));
6891                tid_no = ASC_TIX_TO_TID(scsiq->d2.target_ix);
6892                target_id = ASC_TIX_TO_TARGET_ID(scsiq->d2.target_ix);
6893                if ((scsiq->cntl & QC_SG_HEAD) != 0) {
6894                        sg_q_addr = q_addr;
6895                        sg_list_qp = next_qp;
6896                        for (q_cnt = 0; q_cnt < sg_queue_cnt; q_cnt++) {
6897                                sg_list_qp = AscReadLramByte(iop_base,
6898                                                             (ushort)(sg_q_addr
6899                                                                      + (ushort)
6900                                                                      ASC_SCSIQ_B_FWD));
6901                                sg_q_addr = ASC_QNO_TO_QADDR(sg_list_qp);
6902                                if (sg_list_qp == ASC_QLINK_END) {
6903                                        AscSetLibErrorCode(asc_dvc,
6904                                                           ASCQ_ERR_SG_Q_LINKS);
6905                                        scsiq->d3.done_stat = QD_WITH_ERROR;
6906                                        scsiq->d3.host_stat =
6907                                            QHSTA_D_QDONE_SG_LIST_CORRUPTED;
6908                                        goto FATAL_ERR_QDONE;
6909                                }
6910                                AscWriteLramByte(iop_base,
6911                                                 (ushort)(sg_q_addr + (ushort)
6912                                                          ASC_SCSIQ_B_STATUS),
6913                                                 QS_FREE);
6914                        }
6915                        n_q_used = sg_queue_cnt + 1;
6916                        AscPutVarDoneQTail(iop_base, sg_list_qp);
6917                }
6918                if (asc_dvc->queue_full_or_busy & target_id) {
6919                        cur_target_qng = AscReadLramByte(iop_base,
6920                                                         (ushort)((ushort)
6921                                                                  ASC_QADR_BEG
6922                                                                  + (ushort)
6923                                                                  scsiq->d2.
6924                                                                  target_ix));
6925                        if (cur_target_qng < asc_dvc->max_dvc_qng[tid_no]) {
6926                                scsi_busy = AscReadLramByte(iop_base, (ushort)
6927                                                            ASCV_SCSIBUSY_B);
6928                                scsi_busy &= ~target_id;
6929                                AscWriteLramByte(iop_base,
6930                                                 (ushort)ASCV_SCSIBUSY_B,
6931                                                 scsi_busy);
6932                                asc_dvc->queue_full_or_busy &= ~target_id;
6933                        }
6934                }
6935                if (asc_dvc->cur_total_qng >= n_q_used) {
6936                        asc_dvc->cur_total_qng -= n_q_used;
6937                        if (asc_dvc->cur_dvc_qng[tid_no] != 0) {
6938                                asc_dvc->cur_dvc_qng[tid_no]--;
6939                        }
6940                } else {
6941                        AscSetLibErrorCode(asc_dvc, ASCQ_ERR_CUR_QNG);
6942                        scsiq->d3.done_stat = QD_WITH_ERROR;
6943                        goto FATAL_ERR_QDONE;
6944                }
6945                if ((scsiq->d2.srb_tag == 0UL) ||
6946                    ((scsiq->q_status & QS_ABORTED) != 0)) {
6947                        return (0x11);
6948                } else if (scsiq->q_status == QS_DONE) {
6949                        /*
6950                         * This is also curious.
6951                         * false_overrun will _always_ be set to 'false'
6952                         */
6953                        false_overrun = false;
6954                        if (scsiq->extra_bytes != 0) {
6955                                scsiq->remain_bytes += scsiq->extra_bytes;
6956                        }
6957                        if (scsiq->d3.done_stat == QD_WITH_ERROR) {
6958                                if (scsiq->d3.host_stat ==
6959                                    QHSTA_M_DATA_OVER_RUN) {
6960                                        if ((scsiq->
6961                                             cntl & (QC_DATA_IN | QC_DATA_OUT))
6962                                            == 0) {
6963                                                scsiq->d3.done_stat =
6964                                                    QD_NO_ERROR;
6965                                                scsiq->d3.host_stat =
6966                                                    QHSTA_NO_ERROR;
6967                                        } else if (false_overrun) {
6968                                                scsiq->d3.done_stat =
6969                                                    QD_NO_ERROR;
6970                                                scsiq->d3.host_stat =
6971                                                    QHSTA_NO_ERROR;
6972                                        }
6973                                } else if (scsiq->d3.host_stat ==
6974                                           QHSTA_M_HUNG_REQ_SCSI_BUS_RESET) {
6975                                        AscStopChip(iop_base);
6976                                        AscSetChipControl(iop_base,
6977                                                          (uchar)(CC_SCSI_RESET
6978                                                                  | CC_HALT));
6979                                        udelay(60);
6980                                        AscSetChipControl(iop_base, CC_HALT);
6981                                        AscSetChipStatus(iop_base,
6982                                                         CIW_CLR_SCSI_RESET_INT);
6983                                        AscSetChipStatus(iop_base, 0);
6984                                        AscSetChipControl(iop_base, 0);
6985                                }
6986                        }
6987                        if ((scsiq->cntl & QC_NO_CALLBACK) == 0) {
6988                                asc_isr_callback(asc_dvc, scsiq);
6989                        } else {
6990                                if ((AscReadLramByte(iop_base,
6991                                                     (ushort)(q_addr + (ushort)
6992                                                              ASC_SCSIQ_CDB_BEG))
6993                                     == START_STOP)) {
6994                                        asc_dvc->unit_not_ready &= ~target_id;
6995                                        if (scsiq->d3.done_stat != QD_NO_ERROR) {
6996                                                asc_dvc->start_motor &=
6997                                                    ~target_id;
6998                                        }
6999                                }
7000                        }

7001                        return (1);
7002                } else {
7003                        AscSetLibErrorCode(asc_dvc, ASCQ_ERR_Q_STATUS);
7004 FATAL_ERR_QDONE:
7005                        if ((scsiq->cntl & QC_NO_CALLBACK) == 0) {
7006                                asc_isr_callback(asc_dvc, scsiq);
7007                        }
7008                        return (0x80);
7009                }
7010        }
7011        return (0);
7012}
7013
7014static int AscISR(ASC_DVC_VAR *asc_dvc)
7015{
7016        ASC_CS_TYPE chipstat;
7017        PortAddr iop_base;
7018        ushort saved_ram_addr;
7019        uchar ctrl_reg;
7020        uchar saved_ctrl_reg;
7021        int int_pending;
7022        int status;
7023        uchar host_flag;
7024
7025        iop_base = asc_dvc->iop_base;
7026        int_pending = ASC_FALSE;
7027
7028        if (AscIsIntPending(iop_base) == 0)
7029                return int_pending;
7030
7031        if ((asc_dvc->init_state & ASC_INIT_STATE_END_LOAD_MC) == 0) {
7032                return ASC_ERROR;
7033        }
7034        if (asc_dvc->in_critical_cnt != 0) {
7035                AscSetLibErrorCode(asc_dvc, ASCQ_ERR_ISR_ON_CRITICAL);
7036                return ASC_ERROR;
7037        }
7038        if (asc_dvc->is_in_int) {
7039                AscSetLibErrorCode(asc_dvc, ASCQ_ERR_ISR_RE_ENTRY);
7040                return ASC_ERROR;
7041        }
7042        asc_dvc->is_in_int = true;
7043        ctrl_reg = AscGetChipControl(iop_base);
7044        saved_ctrl_reg = ctrl_reg & (~(CC_SCSI_RESET | CC_CHIP_RESET |
7045                                       CC_SINGLE_STEP | CC_DIAG | CC_TEST));
7046        chipstat = AscGetChipStatus(iop_base);
7047        if (chipstat & CSW_SCSI_RESET_LATCH) {
7048                if (!(asc_dvc->bus_type & (ASC_IS_VL | ASC_IS_EISA))) {
7049                        int i = 10;
7050                        int_pending = ASC_TRUE;
7051                        asc_dvc->sdtr_done = 0;
7052                        saved_ctrl_reg &= (uchar)(~CC_HALT);
7053                        while ((AscGetChipStatus(iop_base) &
7054                                CSW_SCSI_RESET_ACTIVE) && (i-- > 0)) {
7055                                mdelay(100);
7056                        }
7057                        AscSetChipControl(iop_base, (CC_CHIP_RESET | CC_HALT));
7058                        AscSetChipControl(iop_base, CC_HALT);
7059                        AscSetChipStatus(iop_base, CIW_CLR_SCSI_RESET_INT);
7060                        AscSetChipStatus(iop_base, 0);
7061                        chipstat = AscGetChipStatus(iop_base);
7062                }
7063        }
7064        saved_ram_addr = AscGetChipLramAddr(iop_base);
7065        host_flag = AscReadLramByte(iop_base,
7066                                    ASCV_HOST_FLAG_B) &
7067            (uchar)(~ASC_HOST_FLAG_IN_ISR);
7068        AscWriteLramByte(iop_base, ASCV_HOST_FLAG_B,
7069                         (uchar)(host_flag | (uchar)ASC_HOST_FLAG_IN_ISR));
7070        if ((chipstat & CSW_INT_PENDING) || (int_pending)) {
7071                AscAckInterrupt(iop_base);
7072                int_pending = ASC_TRUE;
7073                if ((chipstat & CSW_HALTED) && (ctrl_reg & CC_SINGLE_STEP)) {
7074                        AscIsrChipHalted(asc_dvc);
7075                        saved_ctrl_reg &= (uchar)(~CC_HALT);
7076                } else {
7077                        if ((asc_dvc->dvc_cntl & ASC_CNTL_INT_MULTI_Q) != 0) {
7078                                while (((status =
7079                                         AscIsrQDone(asc_dvc)) & 0x01) != 0) {
7080                                }
7081                        } else {
7082                                do {
7083                                        if ((status =
7084                                             AscIsrQDone(asc_dvc)) == 1) {
7085                                                break;
7086                                        }
7087                                } while (status == 0x11);
7088                        }
7089                        if ((status & 0x80) != 0)
7090                                int_pending = ASC_ERROR;
7091                }
7092        }
7093        AscWriteLramByte(iop_base, ASCV_HOST_FLAG_B, host_flag);
7094        AscSetChipLramAddr(iop_base, saved_ram_addr);
7095        AscSetChipControl(iop_base, saved_ctrl_reg);
7096        asc_dvc->is_in_int = false;
7097        return int_pending;
7098}
7099
7100/*
7101 * advansys_reset()
7102 *
7103 * Reset the host associated with the command 'scp'.
7104 *
7105 * This function runs its own thread. Interrupts must be blocked but
7106 * sleeping is allowed and no locking other than for host structures is
7107 * required. Returns SUCCESS or FAILED.
7108 */
7109static int advansys_reset(struct scsi_cmnd *scp)
7110{
7111        struct Scsi_Host *shost = scp->device->host;
7112        struct asc_board *boardp = shost_priv(shost);
7113        unsigned long flags;
7114        int status;
7115        int ret = SUCCESS;
7116
7117        ASC_DBG(1, "0x%p\n", scp);
7118
7119        ASC_STATS(shost, reset);
7120
7121        scmd_printk(KERN_INFO, scp, "SCSI host reset started...\n");
7122
7123        if (ASC_NARROW_BOARD(boardp)) {
7124                ASC_DVC_VAR *asc_dvc = &boardp->dvc_var.asc_dvc_var;
7125
7126                /* Reset the chip and SCSI bus. */
7127                ASC_DBG(1, "before AscInitAsc1000Driver()\n");
7128                status = AscInitAsc1000Driver(asc_dvc);
7129
7130                /* Refer to ASC_IERR_* definitions for meaning of 'err_code'. */
7131                if (asc_dvc->err_code || !asc_dvc->overrun_dma) {
7132                        scmd_printk(KERN_INFO, scp, "SCSI host reset error: "
7133                                    "0x%x, status: 0x%x\n", asc_dvc->err_code,
7134                                    status);
7135                        ret = FAILED;
7136                } else if (status) {
7137                        scmd_printk(KERN_INFO, scp, "SCSI host reset warning: "
7138                                    "0x%x\n", status);
7139                } else {
7140                        scmd_printk(KERN_INFO, scp, "SCSI host reset "
7141                                    "successful\n");
7142                }
7143
7144                ASC_DBG(1, "after AscInitAsc1000Driver()\n");
7145        } else {
7146                /*
7147                 * If the suggest reset bus flags are set, then reset the bus.
7148                 * Otherwise only reset the device.
7149                 */
7150                ADV_DVC_VAR *adv_dvc = &boardp->dvc_var.adv_dvc_var;
7151
7152                /*
7153                 * Reset the chip and SCSI bus.
7154                 */
7155                ASC_DBG(1, "before AdvResetChipAndSB()\n");
7156                switch (AdvResetChipAndSB(adv_dvc)) {
7157                case ASC_TRUE:
7158                        scmd_printk(KERN_INFO, scp, "SCSI host reset "
7159                                    "successful\n");
7160                        break;
7161                case ASC_FALSE:
7162                default:
7163                        scmd_printk(KERN_INFO, scp, "SCSI host reset error\n");
7164                        ret = FAILED;
7165                        break;
7166                }
7167                spin_lock_irqsave(shost->host_lock, flags);
7168                AdvISR(adv_dvc);
7169                spin_unlock_irqrestore(shost->host_lock, flags);
7170        }
7171
7172        ASC_DBG(1, "ret %d\n", ret);
7173
7174        return ret;
7175}
7176
7177/*
7178 * advansys_biosparam()
7179 *
7180 * Translate disk drive geometry if the "BIOS greater than 1 GB"
7181 * support is enabled for a drive.
7182 *
7183 * ip (information pointer) is an int array with the following definition:
7184 * ip[0]: heads
7185 * ip[1]: sectors
7186 * ip[2]: cylinders
7187 */
7188static int
7189advansys_biosparam(struct scsi_device *sdev, struct block_device *bdev,
7190                   sector_t capacity, int ip[])
7191{
7192        struct asc_board *boardp = shost_priv(sdev->host);
7193
7194        ASC_DBG(1, "begin\n");
7195        ASC_STATS(sdev->host, biosparam);
7196        if (ASC_NARROW_BOARD(boardp)) {
7197                if ((boardp->dvc_var.asc_dvc_var.dvc_cntl &
7198                     ASC_CNTL_BIOS_GT_1GB) && capacity > 0x200000) {
7199                        ip[0] = 255;
7200                        ip[1] = 63;
7201                } else {
7202                        ip[0] = 64;
7203                        ip[1] = 32;
7204                }
7205        } else {
7206                if ((boardp->dvc_var.adv_dvc_var.bios_ctrl &
7207                     BIOS_CTRL_EXTENDED_XLAT) && capacity > 0x200000) {
7208                        ip[0] = 255;
7209                        ip[1] = 63;
7210                } else {
7211                        ip[0] = 64;
7212                        ip[1] = 32;
7213                }
7214        }
7215        ip[2] = (unsigned long)capacity / (ip[0] * ip[1]);
7216        ASC_DBG(1, "end\n");
7217        return 0;
7218}
7219
7220/*
7221 * First-level interrupt handler.
7222 *
7223 * 'dev_id' is a pointer to the interrupting adapter's Scsi_Host.
7224 */
7225static irqreturn_t advansys_interrupt(int irq, void *dev_id)
7226{
7227        struct Scsi_Host *shost = dev_id;
7228        struct asc_board *boardp = shost_priv(shost);
7229        irqreturn_t result = IRQ_NONE;
7230        unsigned long flags;
7231
7232        ASC_DBG(2, "boardp 0x%p\n", boardp);
7233        spin_lock_irqsave(shost->host_lock, flags);
7234        if (ASC_NARROW_BOARD(boardp)) {
7235                if (AscIsIntPending(shost->io_port)) {
7236                        result = IRQ_HANDLED;
7237                        ASC_STATS(shost, interrupt);
7238                        ASC_DBG(1, "before AscISR()\n");
7239                        AscISR(&boardp->dvc_var.asc_dvc_var);
7240                }
7241        } else {
7242                ASC_DBG(1, "before AdvISR()\n");
7243                if (AdvISR(&boardp->dvc_var.adv_dvc_var)) {
7244                        result = IRQ_HANDLED;
7245                        ASC_STATS(shost, interrupt);
7246                }
7247        }
7248        spin_unlock_irqrestore(shost->host_lock, flags);
7249
7250        ASC_DBG(1, "end\n");
7251        return result;
7252}
7253
7254static bool AscHostReqRiscHalt(PortAddr iop_base)
7255{
7256        int count = 0;
7257        bool sta = false;
7258        uchar saved_stop_code;
7259
7260        if (AscIsChipHalted(iop_base))
7261                return true;
7262        saved_stop_code = AscReadLramByte(iop_base, ASCV_STOP_CODE_B);
7263        AscWriteLramByte(iop_base, ASCV_STOP_CODE_B,
7264                         ASC_STOP_HOST_REQ_RISC_HALT | ASC_STOP_REQ_RISC_STOP);
7265        do {
7266                if (AscIsChipHalted(iop_base)) {
7267                        sta = true;
7268                        break;
7269                }
7270                mdelay(100);
7271        } while (count++ < 20);
7272        AscWriteLramByte(iop_base, ASCV_STOP_CODE_B, saved_stop_code);
7273        return sta;
7274}
7275
7276static bool
7277AscSetRunChipSynRegAtID(PortAddr iop_base, uchar tid_no, uchar sdtr_data)
7278{
7279        bool sta = false;
7280
7281        if (AscHostReqRiscHalt(iop_base)) {
7282                sta = AscSetChipSynRegAtID(iop_base, tid_no, sdtr_data);
7283                AscStartChip(iop_base);
7284        }
7285        return sta;
7286}
7287
7288static void AscAsyncFix(ASC_DVC_VAR *asc_dvc, struct scsi_device *sdev)
7289{
7290        char type = sdev->type;
7291        ASC_SCSI_BIT_ID_TYPE tid_bits = 1 << sdev->id;
7292
7293        if (!(asc_dvc->bug_fix_cntl & ASC_BUG_FIX_ASYN_USE_SYN))
7294                return;
7295        if (asc_dvc->init_sdtr & tid_bits)
7296                return;
7297
7298        if ((type == TYPE_ROM) && (strncmp(sdev->vendor, "HP ", 3) == 0))
7299                asc_dvc->pci_fix_asyn_xfer_always |= tid_bits;
7300
7301        asc_dvc->pci_fix_asyn_xfer |= tid_bits;
7302        if ((type == TYPE_PROCESSOR) || (type == TYPE_SCANNER) ||
7303            (type == TYPE_ROM) || (type == TYPE_TAPE))
7304                asc_dvc->pci_fix_asyn_xfer &= ~tid_bits;
7305
7306        if (asc_dvc->pci_fix_asyn_xfer & tid_bits)
7307                AscSetRunChipSynRegAtID(asc_dvc->iop_base, sdev->id,
7308                                        ASYN_SDTR_DATA_FIX_PCI_REV_AB);
7309}
7310
7311static void
7312advansys_narrow_slave_configure(struct scsi_device *sdev, ASC_DVC_VAR *asc_dvc)
7313{
7314        ASC_SCSI_BIT_ID_TYPE tid_bit = 1 << sdev->id;
7315        ASC_SCSI_BIT_ID_TYPE orig_use_tagged_qng = asc_dvc->use_tagged_qng;
7316
7317        if (sdev->lun == 0) {
7318                ASC_SCSI_BIT_ID_TYPE orig_init_sdtr = asc_dvc->init_sdtr;
7319                if ((asc_dvc->cfg->sdtr_enable & tid_bit) && sdev->sdtr) {
7320                        asc_dvc->init_sdtr |= tid_bit;
7321                } else {
7322                        asc_dvc->init_sdtr &= ~tid_bit;
7323                }
7324
7325                if (orig_init_sdtr != asc_dvc->init_sdtr)
7326                        AscAsyncFix(asc_dvc, sdev);
7327        }
7328
7329        if (sdev->tagged_supported) {
7330                if (asc_dvc->cfg->cmd_qng_enabled & tid_bit) {
7331                        if (sdev->lun == 0) {
7332                                asc_dvc->cfg->can_tagged_qng |= tid_bit;
7333                                asc_dvc->use_tagged_qng |= tid_bit;
7334                        }
7335                        scsi_change_queue_depth(sdev, 
7336                                                asc_dvc->max_dvc_qng[sdev->id]);
7337                }
7338        } else {
7339                if (sdev->lun == 0) {
7340                        asc_dvc->cfg->can_tagged_qng &= ~tid_bit;
7341                        asc_dvc->use_tagged_qng &= ~tid_bit;
7342                }
7343        }
7344
7345        if ((sdev->lun == 0) &&
7346            (orig_use_tagged_qng != asc_dvc->use_tagged_qng)) {
7347                AscWriteLramByte(asc_dvc->iop_base, ASCV_DISC_ENABLE_B,
7348                                 asc_dvc->cfg->disc_enable);
7349                AscWriteLramByte(asc_dvc->iop_base, ASCV_USE_TAGGED_QNG_B,
7350                                 asc_dvc->use_tagged_qng);
7351                AscWriteLramByte(asc_dvc->iop_base, ASCV_CAN_TAGGED_QNG_B,
7352                                 asc_dvc->cfg->can_tagged_qng);
7353
7354                asc_dvc->max_dvc_qng[sdev->id] =
7355                                        asc_dvc->cfg->max_tag_qng[sdev->id];
7356                AscWriteLramByte(asc_dvc->iop_base,
7357                                 (ushort)(ASCV_MAX_DVC_QNG_BEG + sdev->id),
7358                                 asc_dvc->max_dvc_qng[sdev->id]);
7359        }
7360}
7361
7362/*
7363 * Wide Transfers
7364 *
7365 * If the EEPROM enabled WDTR for the device and the device supports wide
7366 * bus (16 bit) transfers, then turn on the device's 'wdtr_able' bit and
7367 * write the new value to the microcode.
7368 */
7369static void
7370advansys_wide_enable_wdtr(AdvPortAddr iop_base, unsigned short tidmask)
7371{
7372        unsigned short cfg_word;
7373        AdvReadWordLram(iop_base, ASC_MC_WDTR_ABLE, cfg_word);
7374        if ((cfg_word & tidmask) != 0)
7375                return;
7376
7377        cfg_word |= tidmask;
7378        AdvWriteWordLram(iop_base, ASC_MC_WDTR_ABLE, cfg_word);
7379
7380        /*
7381         * Clear the microcode SDTR and WDTR negotiation done indicators for
7382         * the target to cause it to negotiate with the new setting set above.
7383         * WDTR when accepted causes the target to enter asynchronous mode, so
7384         * SDTR must be negotiated.
7385         */
7386        AdvReadWordLram(iop_base, ASC_MC_SDTR_DONE, cfg_word);
7387        cfg_word &= ~tidmask;
7388        AdvWriteWordLram(iop_base, ASC_MC_SDTR_DONE, cfg_word);
7389        AdvReadWordLram(iop_base, ASC_MC_WDTR_DONE, cfg_word);
7390        cfg_word &= ~tidmask;
7391        AdvWriteWordLram(iop_base, ASC_MC_WDTR_DONE, cfg_word);
7392}
7393
7394/*
7395 * Synchronous Transfers
7396 *
7397 * If the EEPROM enabled SDTR for the device and the device
7398 * supports synchronous transfers, then turn on the device's
7399 * 'sdtr_able' bit. Write the new value to the microcode.
7400 */
7401static void
7402advansys_wide_enable_sdtr(AdvPortAddr iop_base, unsigned short tidmask)
7403{
7404        unsigned short cfg_word;
7405        AdvReadWordLram(iop_base, ASC_MC_SDTR_ABLE, cfg_word);
7406        if ((cfg_word & tidmask) != 0)
7407                return;
7408
7409        cfg_word |= tidmask;
7410        AdvWriteWordLram(iop_base, ASC_MC_SDTR_ABLE, cfg_word);
7411
7412        /*
7413         * Clear the microcode "SDTR negotiation" done indicator for the
7414         * target to cause it to negotiate with the new setting set above.
7415         */
7416        AdvReadWordLram(iop_base, ASC_MC_SDTR_DONE, cfg_word);
7417        cfg_word &= ~tidmask;
7418        AdvWriteWordLram(iop_base, ASC_MC_SDTR_DONE, cfg_word);
7419}
7420
7421/*
7422 * PPR (Parallel Protocol Request) Capable
7423 *
7424 * If the device supports DT mode, then it must be PPR capable.
7425 * The PPR message will be used in place of the SDTR and WDTR
7426 * messages to negotiate synchronous speed and offset, transfer
7427 * width, and protocol options.
7428 */
7429static void advansys_wide_enable_ppr(ADV_DVC_VAR *adv_dvc,
7430                                AdvPortAddr iop_base, unsigned short tidmask)
7431{
7432        AdvReadWordLram(iop_base, ASC_MC_PPR_ABLE, adv_dvc->ppr_able);
7433        adv_dvc->ppr_able |= tidmask;
7434        AdvWriteWordLram(iop_base, ASC_MC_PPR_ABLE, adv_dvc->ppr_able);
7435}
7436
7437static void
7438advansys_wide_slave_configure(struct scsi_device *sdev, ADV_DVC_VAR *adv_dvc)
7439{
7440        AdvPortAddr iop_base = adv_dvc->iop_base;
7441        unsigned short tidmask = 1 << sdev->id;
7442
7443        if (sdev->lun == 0) {
7444                /*
7445                 * Handle WDTR, SDTR, and Tag Queuing. If the feature
7446                 * is enabled in the EEPROM and the device supports the
7447                 * feature, then enable it in the microcode.
7448                 */
7449
7450                if ((adv_dvc->wdtr_able & tidmask) && sdev->wdtr)
7451                        advansys_wide_enable_wdtr(iop_base, tidmask);
7452                if ((adv_dvc->sdtr_able & tidmask) && sdev->sdtr)
7453                        advansys_wide_enable_sdtr(iop_base, tidmask);
7454                if (adv_dvc->chip_type == ADV_CHIP_ASC38C1600 && sdev->ppr)
7455                        advansys_wide_enable_ppr(adv_dvc, iop_base, tidmask);
7456
7457                /*
7458                 * Tag Queuing is disabled for the BIOS which runs in polled
7459                 * mode and would see no benefit from Tag Queuing. Also by
7460                 * disabling Tag Queuing in the BIOS devices with Tag Queuing
7461                 * bugs will at least work with the BIOS.
7462                 */
7463                if ((adv_dvc->tagqng_able & tidmask) &&
7464                    sdev->tagged_supported) {
7465                        unsigned short cfg_word;
7466                        AdvReadWordLram(iop_base, ASC_MC_TAGQNG_ABLE, cfg_word);
7467                        cfg_word |= tidmask;
7468                        AdvWriteWordLram(iop_base, ASC_MC_TAGQNG_ABLE,
7469                                         cfg_word);
7470                        AdvWriteByteLram(iop_base,
7471                                         ASC_MC_NUMBER_OF_MAX_CMD + sdev->id,
7472                                         adv_dvc->max_dvc_qng);
7473                }
7474        }
7475
7476        if ((adv_dvc->tagqng_able & tidmask) && sdev->tagged_supported)
7477                scsi_change_queue_depth(sdev, adv_dvc->max_dvc_qng);
7478}
7479
7480/*
7481 * Set the number of commands to queue per device for the
7482 * specified host adapter.
7483 */
7484static int advansys_slave_configure(struct scsi_device *sdev)
7485{
7486        struct asc_board *boardp = shost_priv(sdev->host);
7487
7488        if (ASC_NARROW_BOARD(boardp))
7489                advansys_narrow_slave_configure(sdev,
7490                                                &boardp->dvc_var.asc_dvc_var);
7491        else
7492                advansys_wide_slave_configure(sdev,
7493                                                &boardp->dvc_var.adv_dvc_var);
7494
7495        return 0;
7496}
7497
7498static __le32 asc_get_sense_buffer_dma(struct scsi_cmnd *scp)
7499{
7500        struct asc_board *board = shost_priv(scp->device->host);
7501
7502        scp->SCp.dma_handle = dma_map_single(board->dev, scp->sense_buffer,
7503                                             SCSI_SENSE_BUFFERSIZE,
7504                                             DMA_FROM_DEVICE);
7505        if (dma_mapping_error(board->dev, scp->SCp.dma_handle)) {
7506                ASC_DBG(1, "failed to map sense buffer\n");
7507                return 0;
7508        }
7509        return cpu_to_le32(scp->SCp.dma_handle);
7510}
7511
7512static int asc_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
7513                        struct asc_scsi_q *asc_scsi_q)
7514{
7515        struct asc_dvc_var *asc_dvc = &boardp->dvc_var.asc_dvc_var;
7516        int use_sg;
7517        u32 srb_tag;
7518
7519        memset(asc_scsi_q, 0, sizeof(*asc_scsi_q));
7520
7521        /*
7522         * Set the srb_tag to the command tag + 1, as
7523         * srb_tag '0' is used internally by the chip.
7524         */
7525        srb_tag = scp->request->tag + 1;
7526        asc_scsi_q->q2.srb_tag = srb_tag;
7527
7528        /*
7529         * Build the ASC_SCSI_Q request.
7530         */
7531        asc_scsi_q->cdbptr = &scp->cmnd[0];
7532        asc_scsi_q->q2.cdb_len = scp->cmd_len;
7533        asc_scsi_q->q1.target_id = ASC_TID_TO_TARGET_ID(scp->device->id);
7534        asc_scsi_q->q1.target_lun = scp->device->lun;
7535        asc_scsi_q->q2.target_ix =
7536            ASC_TIDLUN_TO_IX(scp->device->id, scp->device->lun);
7537        asc_scsi_q->q1.sense_addr = asc_get_sense_buffer_dma(scp);
7538        asc_scsi_q->q1.sense_len = SCSI_SENSE_BUFFERSIZE;
7539        if (!asc_scsi_q->q1.sense_addr)
7540                return ASC_BUSY;
7541
7542        /*
7543         * If there are any outstanding requests for the current target,
7544         * then every 255th request send an ORDERED request. This heuristic
7545         * tries to retain the benefit of request sorting while preventing
7546         * request starvation. 255 is the max number of tags or pending commands
7547         * a device may have outstanding.
7548         *
7549         * The request count is incremented below for every successfully
7550         * started request.
7551         *
7552         */
7553        if ((asc_dvc->cur_dvc_qng[scp->device->id] > 0) &&
7554            (boardp->reqcnt[scp->device->id] % 255) == 0) {
7555                asc_scsi_q->q2.tag_code = ORDERED_QUEUE_TAG;
7556        } else {
7557                asc_scsi_q->q2.tag_code = SIMPLE_QUEUE_TAG;
7558        }
7559
7560        /* Build ASC_SCSI_Q */
7561        use_sg = scsi_dma_map(scp);
7562        if (use_sg < 0) {
7563                ASC_DBG(1, "failed to map sglist\n");
7564                return ASC_BUSY;
7565        } else if (use_sg > 0) {
7566                int sgcnt;
7567                struct scatterlist *slp;
7568                struct asc_sg_head *asc_sg_head;
7569
7570                if (use_sg > scp->device->host->sg_tablesize) {
7571                        scmd_printk(KERN_ERR, scp, "use_sg %d > "
7572                                "sg_tablesize %d\n", use_sg,
7573                                scp->device->host->sg_tablesize);
7574                        scsi_dma_unmap(scp);
7575                        scp->result = HOST_BYTE(DID_ERROR);
7576                        return ASC_ERROR;
7577                }
7578
7579                asc_sg_head = kzalloc(sizeof(asc_scsi_q->sg_head) +
7580                        use_sg * sizeof(struct asc_sg_list), GFP_ATOMIC);
7581                if (!asc_sg_head) {
7582                        scsi_dma_unmap(scp);
7583                        scp->result = HOST_BYTE(DID_SOFT_ERROR);
7584                        return ASC_ERROR;
7585                }
7586
7587                asc_scsi_q->q1.cntl |= QC_SG_HEAD;
7588                asc_scsi_q->sg_head = asc_sg_head;
7589                asc_scsi_q->q1.data_cnt = 0;
7590                asc_scsi_q->q1.data_addr = 0;
7591                /* This is a byte value, otherwise it would need to be swapped. */
7592                asc_sg_head->entry_cnt = asc_scsi_q->q1.sg_queue_cnt = use_sg;
7593                ASC_STATS_ADD(scp->device->host, xfer_elem,
7594                              asc_sg_head->entry_cnt);
7595
7596                /*
7597                 * Convert scatter-gather list into ASC_SG_HEAD list.
7598                 */
7599                scsi_for_each_sg(scp, slp, use_sg, sgcnt) {
7600                        asc_sg_head->sg_list[sgcnt].addr =
7601                            cpu_to_le32(sg_dma_address(slp));
7602                        asc_sg_head->sg_list[sgcnt].bytes =
7603                            cpu_to_le32(sg_dma_len(slp));
7604                        ASC_STATS_ADD(scp->device->host, xfer_sect,
7605                                      DIV_ROUND_UP(sg_dma_len(slp), 512));
7606                }
7607        }
7608
7609        ASC_STATS(scp->device->host, xfer_cnt);
7610
7611        ASC_DBG_PRT_ASC_SCSI_Q(2, asc_scsi_q);
7612        ASC_DBG_PRT_CDB(1, scp->cmnd, scp->cmd_len);
7613
7614        return ASC_NOERROR;
7615}
7616
7617/*
7618 * Build scatter-gather list for Adv Library (Wide Board).
7619 *
7620 * Additional ADV_SG_BLOCK structures will need to be allocated
7621 * if the total number of scatter-gather elements exceeds
7622 * NO_OF_SG_PER_BLOCK (15). The ADV_SG_BLOCK structures are
7623 * assumed to be physically contiguous.
7624 *
7625 * Return:
7626 *      ADV_SUCCESS(1) - SG List successfully created
7627 *      ADV_ERROR(-1) - SG List creation failed
7628 */
7629static int
7630adv_get_sglist(struct asc_board *boardp, adv_req_t *reqp,
7631               ADV_SCSI_REQ_Q *scsiqp, struct scsi_cmnd *scp, int use_sg)
7632{
7633        adv_sgblk_t *sgblkp, *prev_sgblkp;
7634        struct scatterlist *slp;
7635        int sg_elem_cnt;
7636        ADV_SG_BLOCK *sg_block, *prev_sg_block;
7637        dma_addr_t sgblk_paddr;
7638        int i;
7639
7640        slp = scsi_sglist(scp);
7641        sg_elem_cnt = use_sg;
7642        prev_sgblkp = NULL;
7643        prev_sg_block = NULL;
7644        reqp->sgblkp = NULL;
7645
7646        for (;;) {
7647                /*
7648                 * Allocate a 'adv_sgblk_t' structure from the board free
7649                 * list. One 'adv_sgblk_t' structure holds NO_OF_SG_PER_BLOCK
7650                 * (15) scatter-gather elements.
7651                 */
7652                sgblkp = dma_pool_alloc(boardp->adv_sgblk_pool, GFP_ATOMIC,
7653                                        &sgblk_paddr);
7654                if (!sgblkp) {
7655                        ASC_DBG(1, "no free adv_sgblk_t\n");
7656                        ASC_STATS(scp->device->host, adv_build_nosg);
7657
7658                        /*
7659                         * Allocation failed. Free 'adv_sgblk_t' structures
7660                         * already allocated for the request.
7661                         */
7662                        while ((sgblkp = reqp->sgblkp) != NULL) {
7663                                /* Remove 'sgblkp' from the request list. */
7664                                reqp->sgblkp = sgblkp->next_sgblkp;
7665                                sgblkp->next_sgblkp = NULL;
7666                                dma_pool_free(boardp->adv_sgblk_pool, sgblkp,
7667                                              sgblkp->sg_addr);
7668                        }
7669                        return ASC_BUSY;
7670                }
7671                /* Complete 'adv_sgblk_t' board allocation. */
7672                sgblkp->sg_addr = sgblk_paddr;
7673                sgblkp->next_sgblkp = NULL;
7674                sg_block = &sgblkp->sg_block;
7675
7676                /*
7677                 * Check if this is the first 'adv_sgblk_t' for the
7678                 * request.
7679                 */
7680                if (reqp->sgblkp == NULL) {
7681                        /* Request's first scatter-gather block. */
7682                        reqp->sgblkp = sgblkp;
7683
7684                        /*
7685                         * Set ADV_SCSI_REQ_T ADV_SG_BLOCK virtual and physical
7686                         * address pointers.
7687                         */
7688                        scsiqp->sg_list_ptr = sg_block;
7689                        scsiqp->sg_real_addr = cpu_to_le32(sgblk_paddr);
7690                } else {
7691                        /* Request's second or later scatter-gather block. */
7692                        prev_sgblkp->next_sgblkp = sgblkp;
7693
7694                        /*
7695                         * Point the previous ADV_SG_BLOCK structure to
7696                         * the newly allocated ADV_SG_BLOCK structure.
7697                         */
7698                        prev_sg_block->sg_ptr = cpu_to_le32(sgblk_paddr);
7699                }
7700
7701                for (i = 0; i < NO_OF_SG_PER_BLOCK; i++) {
7702                        sg_block->sg_list[i].sg_addr =
7703                                        cpu_to_le32(sg_dma_address(slp));
7704                        sg_block->sg_list[i].sg_count =
7705                                        cpu_to_le32(sg_dma_len(slp));
7706                        ASC_STATS_ADD(scp->device->host, xfer_sect,
7707                                      DIV_ROUND_UP(sg_dma_len(slp), 512));
7708
7709                        if (--sg_elem_cnt == 0) {
7710                                /*
7711                                 * Last ADV_SG_BLOCK and scatter-gather entry.
7712                                 */
7713                                sg_block->sg_cnt = i + 1;
7714                                sg_block->sg_ptr = 0L; /* Last ADV_SG_BLOCK in list. */
7715                                return ADV_SUCCESS;
7716                        }
7717                        slp++;
7718                }
7719                sg_block->sg_cnt = NO_OF_SG_PER_BLOCK;
7720                prev_sg_block = sg_block;
7721                prev_sgblkp = sgblkp;
7722        }
7723}
7724
7725/*
7726 * Build a request structure for the Adv Library (Wide Board).
7727 *
7728 * If an adv_req_t can not be allocated to issue the request,
7729 * then return ASC_BUSY. If an error occurs, then return ASC_ERROR.
7730 *
7731 * Multi-byte fields in the ADV_SCSI_REQ_Q that are used by the
7732 * microcode for DMA addresses or math operations are byte swapped
7733 * to little-endian order.
7734 */
7735static int
7736adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
7737              adv_req_t **adv_reqpp)
7738{
7739        u32 srb_tag = scp->request->tag;
7740        adv_req_t *reqp;
7741        ADV_SCSI_REQ_Q *scsiqp;
7742        int ret;
7743        int use_sg;
7744        dma_addr_t sense_addr;
7745
7746        /*
7747         * Allocate an adv_req_t structure from the board to execute
7748         * the command.
7749         */
7750        reqp = &boardp->adv_reqp[srb_tag];
7751        if (reqp->cmndp && reqp->cmndp != scp ) {
7752                ASC_DBG(1, "no free adv_req_t\n");
7753                ASC_STATS(scp->device->host, adv_build_noreq);
7754                return ASC_BUSY;
7755        }
7756
7757        reqp->req_addr = boardp->adv_reqp_addr + (srb_tag * sizeof(adv_req_t));
7758
7759        scsiqp = &reqp->scsi_req_q;
7760
7761        /*
7762         * Initialize the structure.
7763         */
7764        scsiqp->cntl = scsiqp->scsi_cntl = scsiqp->done_status = 0;
7765
7766        /*
7767         * Set the srb_tag to the command tag.
7768         */
7769        scsiqp->srb_tag = srb_tag;
7770
7771        /*
7772         * Set 'host_scribble' to point to the adv_req_t structure.
7773         */
7774        reqp->cmndp = scp;
7775        scp->host_scribble = (void *)reqp;
7776
7777        /*
7778         * Build the ADV_SCSI_REQ_Q request.
7779         */
7780
7781        /* Set CDB length and copy it to the request structure.  */
7782        scsiqp->cdb_len = scp->cmd_len;
7783        /* Copy first 12 CDB bytes to cdb[]. */
7784        memcpy(scsiqp->cdb, scp->cmnd, scp->cmd_len < 12 ? scp->cmd_len : 12);
7785        /* Copy last 4 CDB bytes, if present, to cdb16[]. */
7786        if (scp->cmd_len > 12) {
7787                int cdb16_len = scp->cmd_len - 12;
7788
7789                memcpy(scsiqp->cdb16, &scp->cmnd[12], cdb16_len);
7790        }
7791
7792        scsiqp->target_id = scp->device->id;
7793        scsiqp->target_lun = scp->device->lun;
7794
7795        sense_addr = dma_map_single(boardp->dev, scp->sense_buffer,
7796                                    SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
7797        if (dma_mapping_error(boardp->dev, sense_addr)) {
7798                ASC_DBG(1, "failed to map sense buffer\n");
7799                ASC_STATS(scp->device->host, adv_build_noreq);
7800                return ASC_BUSY;
7801        }
7802        scsiqp->sense_addr = cpu_to_le32(sense_addr);
7803        scsiqp->sense_len = SCSI_SENSE_BUFFERSIZE;
7804
7805        /* Build ADV_SCSI_REQ_Q */
7806
7807        use_sg = scsi_dma_map(scp);
7808        if (use_sg < 0) {
7809                ASC_DBG(1, "failed to map SG list\n");
7810                ASC_STATS(scp->device->host, adv_build_noreq);
7811                return ASC_BUSY;
7812        } else if (use_sg == 0) {
7813                /* Zero-length transfer */
7814                reqp->sgblkp = NULL;
7815                scsiqp->data_cnt = 0;
7816
7817                scsiqp->data_addr = 0;
7818                scsiqp->sg_list_ptr = NULL;
7819                scsiqp->sg_real_addr = 0;
7820        } else {
7821                if (use_sg > ADV_MAX_SG_LIST) {
7822                        scmd_printk(KERN_ERR, scp, "use_sg %d > "
7823                                   "ADV_MAX_SG_LIST %d\n", use_sg,
7824                                   scp->device->host->sg_tablesize);
7825                        scsi_dma_unmap(scp);
7826                        scp->result = HOST_BYTE(DID_ERROR);
7827                        reqp->cmndp = NULL;
7828                        scp->host_scribble = NULL;
7829
7830                        return ASC_ERROR;
7831                }
7832
7833                scsiqp->data_cnt = cpu_to_le32(scsi_bufflen(scp));
7834
7835                ret = adv_get_sglist(boardp, reqp, scsiqp, scp, use_sg);
7836                if (ret != ADV_SUCCESS) {
7837                        scsi_dma_unmap(scp);
7838                        scp->result = HOST_BYTE(DID_ERROR);
7839                        reqp->cmndp = NULL;
7840                        scp->host_scribble = NULL;
7841
7842                        return ret;
7843                }
7844
7845                ASC_STATS_ADD(scp->device->host, xfer_elem, use_sg);
7846        }
7847
7848        ASC_STATS(scp->device->host, xfer_cnt);
7849
7850        ASC_DBG_PRT_ADV_SCSI_REQ_Q(2, scsiqp);
7851        ASC_DBG_PRT_CDB(1, scp->cmnd, scp->cmd_len);
7852
7853        *adv_reqpp = reqp;
7854
7855        return ASC_NOERROR;
7856}
7857
7858static int AscSgListToQueue(int sg_list)
7859{
7860        int n_sg_list_qs;
7861
7862        n_sg_list_qs = ((sg_list - 1) / ASC_SG_LIST_PER_Q);
7863        if (((sg_list - 1) % ASC_SG_LIST_PER_Q) != 0)
7864                n_sg_list_qs++;
7865        return n_sg_list_qs + 1;
7866}
7867
7868static uint
7869AscGetNumOfFreeQueue(ASC_DVC_VAR *asc_dvc, uchar target_ix, uchar n_qs)
7870{
7871        uint cur_used_qs;
7872        uint cur_free_qs;
7873        ASC_SCSI_BIT_ID_TYPE target_id;
7874        uchar tid_no;
7875
7876        target_id = ASC_TIX_TO_TARGET_ID(target_ix);
7877        tid_no = ASC_TIX_TO_TID(target_ix);
7878        if ((asc_dvc->unit_not_ready & target_id) ||
7879            (asc_dvc->queue_full_or_busy & target_id)) {
7880                return 0;
7881        }
7882        if (n_qs == 1) {
7883                cur_used_qs = (uint) asc_dvc->cur_total_qng +
7884                    (uint) asc_dvc->last_q_shortage + (uint) ASC_MIN_FREE_Q;
7885        } else {
7886                cur_used_qs = (uint) asc_dvc->cur_total_qng +
7887                    (uint) ASC_MIN_FREE_Q;
7888        }
7889        if ((uint) (cur_used_qs + n_qs) <= (uint) asc_dvc->max_total_qng) {
7890                cur_free_qs = (uint) asc_dvc->max_total_qng - cur_used_qs;
7891                if (asc_dvc->cur_dvc_qng[tid_no] >=
7892                    asc_dvc->max_dvc_qng[tid_no]) {
7893                        return 0;
7894                }
7895                return cur_free_qs;
7896        }
7897        if (n_qs > 1) {
7898                if ((n_qs > asc_dvc->last_q_shortage)
7899                    && (n_qs <= (asc_dvc->max_total_qng - ASC_MIN_FREE_Q))) {
7900                        asc_dvc->last_q_shortage = n_qs;
7901                }
7902        }
7903        return 0;
7904}
7905
7906static uchar AscAllocFreeQueue(PortAddr iop_base, uchar free_q_head)
7907{
7908        ushort q_addr;
7909        uchar next_qp;
7910        uchar q_status;
7911
7912        q_addr = ASC_QNO_TO_QADDR(free_q_head);
7913        q_status = (uchar)AscReadLramByte(iop_base,
7914                                          (ushort)(q_addr +
7915                                                   ASC_SCSIQ_B_STATUS));
7916        next_qp = AscReadLramByte(iop_base, (ushort)(q_addr + ASC_SCSIQ_B_FWD));
7917        if (((q_status & QS_READY) == 0) && (next_qp != ASC_QLINK_END))
7918                return next_qp;
7919        return ASC_QLINK_END;
7920}
7921
7922static uchar
7923AscAllocMultipleFreeQueue(PortAddr iop_base, uchar free_q_head, uchar n_free_q)
7924{
7925        uchar i;
7926
7927        for (i = 0; i < n_free_q; i++) {
7928                free_q_head = AscAllocFreeQueue(iop_base, free_q_head);
7929                if (free_q_head == ASC_QLINK_END)
7930                        break;
7931        }
7932        return free_q_head;
7933}
7934
7935/*
7936 * void
7937 * DvcPutScsiQ(PortAddr iop_base, ushort s_addr, uchar *outbuf, int words)
7938 *
7939 * Calling/Exit State:
7940 *    none
7941 *
7942 * Description:
7943 *     Output an ASC_SCSI_Q structure to the chip
7944 */
7945static void
7946DvcPutScsiQ(PortAddr iop_base, ushort s_addr, uchar *outbuf, int words)
7947{
7948        int i;
7949
7950        ASC_DBG_PRT_HEX(2, "DvcPutScsiQ", outbuf, 2 * words);
7951        AscSetChipLramAddr(iop_base, s_addr);
7952        for (i = 0; i < 2 * words; i += 2) {
7953                if (i == 4 || i == 20) {
7954                        continue;
7955                }
7956                outpw(iop_base + IOP_RAM_DATA,
7957                      ((ushort)outbuf[i + 1] << 8) | outbuf[i]);
7958        }
7959}
7960
7961static int AscPutReadyQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq, uchar q_no)
7962{
7963        ushort q_addr;
7964        uchar tid_no;
7965        uchar sdtr_data;
7966        uchar syn_period_ix;
7967        uchar syn_offset;
7968        PortAddr iop_base;
7969
7970        iop_base = asc_dvc->iop_base;
7971        if (((asc_dvc->init_sdtr & scsiq->q1.target_id) != 0) &&
7972            ((asc_dvc->sdtr_done & scsiq->q1.target_id) == 0)) {
7973                tid_no = ASC_TIX_TO_TID(scsiq->q2.target_ix);
7974                sdtr_data = AscGetMCodeInitSDTRAtID(iop_base, tid_no);
7975                syn_period_ix =
7976                    (sdtr_data >> 4) & (asc_dvc->max_sdtr_index - 1);
7977                syn_offset = sdtr_data & ASC_SYN_MAX_OFFSET;
7978                AscMsgOutSDTR(asc_dvc,
7979                              asc_dvc->sdtr_period_tbl[syn_period_ix],
7980                              syn_offset);
7981                scsiq->q1.cntl |= QC_MSG_OUT;
7982        }
7983        q_addr = ASC_QNO_TO_QADDR(q_no);
7984        if ((scsiq->q1.target_id & asc_dvc->use_tagged_qng) == 0) {
7985                scsiq->q2.tag_code &= ~SIMPLE_QUEUE_TAG;
7986        }
7987        scsiq->q1.status = QS_FREE;
7988        AscMemWordCopyPtrToLram(iop_base,
7989                                q_addr + ASC_SCSIQ_CDB_BEG,
7990                                (uchar *)scsiq->cdbptr, scsiq->q2.cdb_len >> 1);
7991
7992        DvcPutScsiQ(iop_base,
7993                    q_addr + ASC_SCSIQ_CPY_BEG,
7994                    (uchar *)&scsiq->q1.cntl,
7995                    ((sizeof(ASC_SCSIQ_1) + sizeof(ASC_SCSIQ_2)) / 2) - 1);
7996        AscWriteLramWord(iop_base,
7997                         (ushort)(q_addr + (ushort)ASC_SCSIQ_B_STATUS),
7998                         (ushort)(((ushort)scsiq->q1.
7999                                   q_no << 8) | (ushort)QS_READY));
8000        return 1;

8001}
8002
8003static int
8004AscPutReadySgListQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq, uchar q_no)
8005{
8006        int sta;
8007        int i;
8008        ASC_SG_HEAD *sg_head;
8009        ASC_SG_LIST_Q scsi_sg_q;
8010        __le32 saved_data_addr;
8011        __le32 saved_data_cnt;
8012        PortAddr iop_base;
8013        ushort sg_list_dwords;
8014        ushort sg_index;
8015        ushort sg_entry_cnt;
8016        ushort q_addr;
8017        uchar next_qp;
8018
8019        iop_base = asc_dvc->iop_base;
8020        sg_head = scsiq->sg_head;
8021        saved_data_addr = scsiq->q1.data_addr;
8022        saved_data_cnt = scsiq->q1.data_cnt;
8023        scsiq->q1.data_addr = cpu_to_le32(sg_head->sg_list[0].addr);
8024        scsiq->q1.data_cnt = cpu_to_le32(sg_head->sg_list[0].bytes);
8025        /*
8026         * Set sg_entry_cnt to be the number of SG elements that
8027         * will fit in the allocated SG queues. It is minus 1, because
8028         * the first SG element is handled above.
8029         */
8030        sg_entry_cnt = sg_head->entry_cnt - 1;
8031
8032        if (sg_entry_cnt != 0) {
8033                scsiq->q1.cntl |= QC_SG_HEAD;
8034                q_addr = ASC_QNO_TO_QADDR(q_no);
8035                sg_index = 1;
8036                scsiq->q1.sg_queue_cnt = sg_head->queue_cnt;
8037                scsi_sg_q.sg_head_qp = q_no;
8038                scsi_sg_q.cntl = QCSG_SG_XFER_LIST;
8039                for (i = 0; i < sg_head->queue_cnt; i++) {
8040                        scsi_sg_q.seq_no = i + 1;
8041                        if (sg_entry_cnt > ASC_SG_LIST_PER_Q) {
8042                                sg_list_dwords = (uchar)(ASC_SG_LIST_PER_Q * 2);
8043                                sg_entry_cnt -= ASC_SG_LIST_PER_Q;
8044                                if (i == 0) {
8045                                        scsi_sg_q.sg_list_cnt =
8046                                            ASC_SG_LIST_PER_Q;
8047                                        scsi_sg_q.sg_cur_list_cnt =
8048                                            ASC_SG_LIST_PER_Q;
8049                                } else {
8050                                        scsi_sg_q.sg_list_cnt =
8051                                            ASC_SG_LIST_PER_Q - 1;
8052                                        scsi_sg_q.sg_cur_list_cnt =
8053                                            ASC_SG_LIST_PER_Q - 1;
8054                                }
8055                        } else {
8056                                scsi_sg_q.cntl |= QCSG_SG_XFER_END;
8057                                sg_list_dwords = sg_entry_cnt << 1;
8058                                if (i == 0) {
8059                                        scsi_sg_q.sg_list_cnt = sg_entry_cnt;
8060                                        scsi_sg_q.sg_cur_list_cnt =
8061                                            sg_entry_cnt;
8062                                } else {
8063                                        scsi_sg_q.sg_list_cnt =
8064                                            sg_entry_cnt - 1;
8065                                        scsi_sg_q.sg_cur_list_cnt =
8066                                            sg_entry_cnt - 1;
8067                                }
8068                                sg_entry_cnt = 0;
8069                        }
8070                        next_qp = AscReadLramByte(iop_base,
8071                                                  (ushort)(q_addr +
8072                                                           ASC_SCSIQ_B_FWD));
8073                        scsi_sg_q.q_no = next_qp;
8074                        q_addr = ASC_QNO_TO_QADDR(next_qp);
8075                        AscMemWordCopyPtrToLram(iop_base,
8076                                                q_addr + ASC_SCSIQ_SGHD_CPY_BEG,
8077                                                (uchar *)&scsi_sg_q,
8078                                                sizeof(ASC_SG_LIST_Q) >> 1);
8079                        AscMemDWordCopyPtrToLram(iop_base,
8080                                                 q_addr + ASC_SGQ_LIST_BEG,
8081                                                 (uchar *)&sg_head->
8082                                                 sg_list[sg_index],
8083                                                 sg_list_dwords);
8084                        sg_index += ASC_SG_LIST_PER_Q;
8085                        scsiq->next_sg_index = sg_index;
8086                }
8087        } else {
8088                scsiq->q1.cntl &= ~QC_SG_HEAD;
8089        }
8090        sta = AscPutReadyQueue(asc_dvc, scsiq, q_no);
8091        scsiq->q1.data_addr = saved_data_addr;
8092        scsiq->q1.data_cnt = saved_data_cnt;
8093        return (sta);
8094}
8095
8096static int
8097AscSendScsiQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq, uchar n_q_required)
8098{
8099        PortAddr iop_base;
8100        uchar free_q_head;
8101        uchar next_qp;
8102        uchar tid_no;
8103        uchar target_ix;
8104        int sta;
8105
8106        iop_base = asc_dvc->iop_base;
8107        target_ix = scsiq->q2.target_ix;
8108        tid_no = ASC_TIX_TO_TID(target_ix);
8109        sta = 0;
8110        free_q_head = (uchar)AscGetVarFreeQHead(iop_base);
8111        if (n_q_required > 1) {
8112                next_qp = AscAllocMultipleFreeQueue(iop_base, free_q_head,
8113                                                    (uchar)n_q_required);
8114                if (next_qp != ASC_QLINK_END) {
8115                        asc_dvc->last_q_shortage = 0;
8116                        scsiq->sg_head->queue_cnt = n_q_required - 1;
8117                        scsiq->q1.q_no = free_q_head;
8118                        sta = AscPutReadySgListQueue(asc_dvc, scsiq,
8119                                                     free_q_head);
8120                }
8121        } else if (n_q_required == 1) {
8122                next_qp = AscAllocFreeQueue(iop_base, free_q_head);
8123                if (next_qp != ASC_QLINK_END) {
8124                        scsiq->q1.q_no = free_q_head;
8125                        sta = AscPutReadyQueue(asc_dvc, scsiq, free_q_head);
8126                }
8127        }
8128        if (sta == 1) {
8129                AscPutVarFreeQHead(iop_base, next_qp);
8130                asc_dvc->cur_total_qng += n_q_required;
8131                asc_dvc->cur_dvc_qng[tid_no]++;
8132        }
8133        return sta;
8134}
8135
8136#define ASC_SYN_OFFSET_ONE_DISABLE_LIST  16
8137static uchar _syn_offset_one_disable_cmd[ASC_SYN_OFFSET_ONE_DISABLE_LIST] = {
8138        INQUIRY,
8139        REQUEST_SENSE,
8140        READ_CAPACITY,
8141        READ_TOC,
8142        MODE_SELECT,
8143        MODE_SENSE,
8144        MODE_SELECT_10,
8145        MODE_SENSE_10,
8146        0xFF,
8147        0xFF,
8148        0xFF,
8149        0xFF,
8150        0xFF,
8151        0xFF,
8152        0xFF,
8153        0xFF
8154};
8155
8156static int AscExeScsiQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq)
8157{
8158        PortAddr iop_base;
8159        int sta;
8160        int n_q_required;
8161        bool disable_syn_offset_one_fix;
8162        int i;
8163        u32 addr;
8164        ushort sg_entry_cnt = 0;
8165        ushort sg_entry_cnt_minus_one = 0;
8166        uchar target_ix;
8167        uchar tid_no;
8168        uchar sdtr_data;
8169        uchar extra_bytes;
8170        uchar scsi_cmd;
8171        uchar disable_cmd;
8172        ASC_SG_HEAD *sg_head;
8173        unsigned long data_cnt;
8174
8175        iop_base = asc_dvc->iop_base;
8176        sg_head = scsiq->sg_head;
8177        if (asc_dvc->err_code != 0)
8178                return ASC_ERROR;
8179        scsiq->q1.q_no = 0;
8180        if ((scsiq->q2.tag_code & ASC_TAG_FLAG_EXTRA_BYTES) == 0) {
8181                scsiq->q1.extra_bytes = 0;
8182        }
8183        sta = 0;
8184        target_ix = scsiq->q2.target_ix;
8185        tid_no = ASC_TIX_TO_TID(target_ix);
8186        n_q_required = 1;
8187        if (scsiq->cdbptr[0] == REQUEST_SENSE) {
8188                if ((asc_dvc->init_sdtr & scsiq->q1.target_id) != 0) {
8189                        asc_dvc->sdtr_done &= ~scsiq->q1.target_id;
8190                        sdtr_data = AscGetMCodeInitSDTRAtID(iop_base, tid_no);
8191                        AscMsgOutSDTR(asc_dvc,
8192                                      asc_dvc->
8193                                      sdtr_period_tbl[(sdtr_data >> 4) &
8194                                                      (uchar)(asc_dvc->
8195                                                              max_sdtr_index -
8196                                                              1)],
8197                                      (uchar)(sdtr_data & (uchar)
8198                                              ASC_SYN_MAX_OFFSET));
8199                        scsiq->q1.cntl |= (QC_MSG_OUT | QC_URGENT);
8200                }
8201        }
8202        if (asc_dvc->in_critical_cnt != 0) {
8203                AscSetLibErrorCode(asc_dvc, ASCQ_ERR_CRITICAL_RE_ENTRY);
8204                return ASC_ERROR;
8205        }
8206        asc_dvc->in_critical_cnt++;
8207        if ((scsiq->q1.cntl & QC_SG_HEAD) != 0) {
8208                if ((sg_entry_cnt = sg_head->entry_cnt) == 0) {
8209                        asc_dvc->in_critical_cnt--;
8210                        return ASC_ERROR;
8211                }
8212                if (sg_entry_cnt > ASC_MAX_SG_LIST) {
8213                        asc_dvc->in_critical_cnt--;
8214                        return ASC_ERROR;
8215                }
8216                if (sg_entry_cnt == 1) {
8217                        scsiq->q1.data_addr = cpu_to_le32(sg_head->sg_list[0].addr);
8218                        scsiq->q1.data_cnt = cpu_to_le32(sg_head->sg_list[0].bytes);
8219                        scsiq->q1.cntl &= ~(QC_SG_HEAD | QC_SG_SWAP_QUEUE);
8220                }
8221                sg_entry_cnt_minus_one = sg_entry_cnt - 1;
8222        }
8223        scsi_cmd = scsiq->cdbptr[0];
8224        disable_syn_offset_one_fix = false;
8225        if ((asc_dvc->pci_fix_asyn_xfer & scsiq->q1.target_id) &&
8226            !(asc_dvc->pci_fix_asyn_xfer_always & scsiq->q1.target_id)) {
8227                if (scsiq->q1.cntl & QC_SG_HEAD) {
8228                        data_cnt = 0;
8229                        for (i = 0; i < sg_entry_cnt; i++) {
8230                                data_cnt += le32_to_cpu(sg_head->sg_list[i].
8231                                                        bytes);
8232                        }
8233                } else {
8234                        data_cnt = le32_to_cpu(scsiq->q1.data_cnt);
8235                }
8236                if (data_cnt != 0UL) {
8237                        if (data_cnt < 512UL) {
8238                                disable_syn_offset_one_fix = true;
8239                        } else {
8240                                for (i = 0; i < ASC_SYN_OFFSET_ONE_DISABLE_LIST;
8241                                     i++) {
8242                                        disable_cmd =
8243                                            _syn_offset_one_disable_cmd[i];
8244                                        if (disable_cmd == 0xFF) {
8245                                                break;
8246                                        }
8247                                        if (scsi_cmd == disable_cmd) {
8248                                                disable_syn_offset_one_fix =
8249                                                    true;
8250                                                break;
8251                                        }
8252                                }
8253                        }
8254                }
8255        }
8256        if (disable_syn_offset_one_fix) {
8257                scsiq->q2.tag_code &= ~SIMPLE_QUEUE_TAG;
8258                scsiq->q2.tag_code |= (ASC_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX |
8259                                       ASC_TAG_FLAG_DISABLE_DISCONNECT);
8260        } else {
8261                scsiq->q2.tag_code &= 0x27;
8262        }
8263        if ((scsiq->q1.cntl & QC_SG_HEAD) != 0) {
8264                if (asc_dvc->bug_fix_cntl) {
8265                        if (asc_dvc->bug_fix_cntl & ASC_BUG_FIX_IF_NOT_DWB) {
8266                                if ((scsi_cmd == READ_6) ||
8267                                    (scsi_cmd == READ_10)) {
8268                                        addr = le32_to_cpu(sg_head->
8269                                                                   sg_list
8270                                                                   [sg_entry_cnt_minus_one].
8271                                                                   addr) +
8272                                                le32_to_cpu(sg_head->
8273                                                                  sg_list
8274                                                                  [sg_entry_cnt_minus_one].
8275                                                                  bytes);
8276                                        extra_bytes =
8277                                            (uchar)((ushort)addr & 0x0003);
8278                                        if ((extra_bytes != 0)
8279                                            &&
8280                                            ((scsiq->q2.
8281                                              tag_code &
8282                                              ASC_TAG_FLAG_EXTRA_BYTES)
8283                                             == 0)) {
8284                                                scsiq->q2.tag_code |=
8285                                                    ASC_TAG_FLAG_EXTRA_BYTES;
8286                                                scsiq->q1.extra_bytes =
8287                                                    extra_bytes;
8288                                                data_cnt =
8289                                                    le32_to_cpu(sg_head->
8290                                                                sg_list
8291                                                                [sg_entry_cnt_minus_one].
8292                                                                bytes);
8293                                                data_cnt -= extra_bytes;
8294                                                sg_head->
8295                                                    sg_list
8296                                                    [sg_entry_cnt_minus_one].
8297                                                    bytes =
8298                                                    cpu_to_le32(data_cnt);
8299                                        }
8300                                }
8301                        }
8302                }
8303                sg_head->entry_to_copy = sg_head->entry_cnt;
8304                n_q_required = AscSgListToQueue(sg_entry_cnt);
8305                if ((AscGetNumOfFreeQueue(asc_dvc, target_ix, n_q_required) >=
8306                     (uint) n_q_required)
8307                    || ((scsiq->q1.cntl & QC_URGENT) != 0)) {
8308                        if ((sta =
8309                             AscSendScsiQueue(asc_dvc, scsiq,
8310                                              n_q_required)) == 1) {
8311                                asc_dvc->in_critical_cnt--;
8312                                return (sta);
8313                        }
8314                }
8315        } else {
8316                if (asc_dvc->bug_fix_cntl) {
8317                        if (asc_dvc->bug_fix_cntl & ASC_BUG_FIX_IF_NOT_DWB) {
8318                                if ((scsi_cmd == READ_6) ||
8319                                    (scsi_cmd == READ_10)) {
8320                                        addr =
8321                                            le32_to_cpu(scsiq->q1.data_addr) +
8322                                            le32_to_cpu(scsiq->q1.data_cnt);
8323                                        extra_bytes =
8324                                            (uchar)((ushort)addr & 0x0003);
8325                                        if ((extra_bytes != 0)
8326                                            &&
8327                                            ((scsiq->q2.
8328                                              tag_code &
8329                                              ASC_TAG_FLAG_EXTRA_BYTES)
8330                                             == 0)) {
8331                                                data_cnt =
8332                                                    le32_to_cpu(scsiq->q1.
8333                                                                data_cnt);
8334                                                if (((ushort)data_cnt & 0x01FF)
8335                                                    == 0) {
8336                                                        scsiq->q2.tag_code |=
8337                                                            ASC_TAG_FLAG_EXTRA_BYTES;
8338                                                        data_cnt -= extra_bytes;
8339                                                        scsiq->q1.data_cnt =
8340                                                            cpu_to_le32
8341                                                            (data_cnt);
8342                                                        scsiq->q1.extra_bytes =
8343                                                            extra_bytes;
8344                                                }
8345                                        }
8346                                }
8347                        }
8348                }
8349                n_q_required = 1;
8350                if ((AscGetNumOfFreeQueue(asc_dvc, target_ix, 1) >= 1) ||
8351                    ((scsiq->q1.cntl & QC_URGENT) != 0)) {
8352                        if ((sta = AscSendScsiQueue(asc_dvc, scsiq,
8353                                                    n_q_required)) == 1) {
8354                                asc_dvc->in_critical_cnt--;
8355                                return (sta);
8356                        }
8357                }
8358        }
8359        asc_dvc->in_critical_cnt--;
8360        return (sta);
8361}
8362
8363/*
8364 * AdvExeScsiQueue() - Send a request to the RISC microcode program.
8365 *
8366 *   Allocate a carrier structure, point the carrier to the ADV_SCSI_REQ_Q,
8367 *   add the carrier to the ICQ (Initiator Command Queue), and tickle the
8368 *   RISC to notify it a new command is ready to be executed.
8369 *
8370 * If 'done_status' is not set to QD_DO_RETRY, then 'error_retry' will be
8371 * set to SCSI_MAX_RETRY.
8372 *
8373 * Multi-byte fields in the ADV_SCSI_REQ_Q that are used by the microcode
8374 * for DMA addresses or math operations are byte swapped to little-endian
8375 * order.
8376 *
8377 * Return:
8378 *      ADV_SUCCESS(1) - The request was successfully queued.
8379 *      ADV_BUSY(0) -    Resource unavailable; Retry again after pending
8380 *                       request completes.
8381 *      ADV_ERROR(-1) -  Invalid ADV_SCSI_REQ_Q request structure
8382 *                       host IC error.
8383 */
8384static int AdvExeScsiQueue(ADV_DVC_VAR *asc_dvc, adv_req_t *reqp)
8385{
8386        AdvPortAddr iop_base;
8387        ADV_CARR_T *new_carrp;
8388        ADV_SCSI_REQ_Q *scsiq = &reqp->scsi_req_q;
8389
8390        /*
8391         * The ADV_SCSI_REQ_Q 'target_id' field should never exceed ADV_MAX_TID.
8392         */
8393        if (scsiq->target_id > ADV_MAX_TID) {
8394                scsiq->host_status = QHSTA_M_INVALID_DEVICE;
8395                scsiq->done_status = QD_WITH_ERROR;
8396                return ADV_ERROR;
8397        }
8398
8399        iop_base = asc_dvc->iop_base;
8400
8401        /*
8402         * Allocate a carrier ensuring at least one carrier always
8403         * remains on the freelist and initialize fields.
8404         */
8405        new_carrp = adv_get_next_carrier(asc_dvc);
8406        if (!new_carrp) {
8407                ASC_DBG(1, "No free carriers\n");
8408                return ADV_BUSY;
8409        }
8410
8411        asc_dvc->carr_pending_cnt++;
8412
8413        /* Save virtual and physical address of ADV_SCSI_REQ_Q and carrier. */
8414        scsiq->scsiq_ptr = cpu_to_le32(scsiq->srb_tag);
8415        scsiq->scsiq_rptr = cpu_to_le32(reqp->req_addr);
8416
8417        scsiq->carr_va = asc_dvc->icq_sp->carr_va;
8418        scsiq->carr_pa = asc_dvc->icq_sp->carr_pa;
8419
8420        /*
8421         * Use the current stopper to send the ADV_SCSI_REQ_Q command to
8422         * the microcode. The newly allocated stopper will become the new
8423         * stopper.
8424         */
8425        asc_dvc->icq_sp->areq_vpa = scsiq->scsiq_rptr;
8426
8427        /*
8428         * Set the 'next_vpa' pointer for the old stopper to be the
8429         * physical address of the new stopper. The RISC can only
8430         * follow physical addresses.
8431         */
8432        asc_dvc->icq_sp->next_vpa = new_carrp->carr_pa;
8433
8434        /*
8435         * Set the host adapter stopper pointer to point to the new carrier.
8436         */
8437        asc_dvc->icq_sp = new_carrp;
8438
8439        if (asc_dvc->chip_type == ADV_CHIP_ASC3550 ||
8440            asc_dvc->chip_type == ADV_CHIP_ASC38C0800) {
8441                /*
8442                 * Tickle the RISC to tell it to read its Command Queue Head pointer.
8443                 */
8444                AdvWriteByteRegister(iop_base, IOPB_TICKLE, ADV_TICKLE_A);
8445                if (asc_dvc->chip_type == ADV_CHIP_ASC3550) {
8446                        /*
8447                         * Clear the tickle value. In the ASC-3550 the RISC flag
8448                         * command 'clr_tickle_a' does not work unless the host
8449                         * value is cleared.
8450                         */
8451                        AdvWriteByteRegister(iop_base, IOPB_TICKLE,
8452                                             ADV_TICKLE_NOP);
8453                }
8454        } else if (asc_dvc->chip_type == ADV_CHIP_ASC38C1600) {
8455                /*
8456                 * Notify the RISC a carrier is ready by writing the physical
8457                 * address of the new carrier stopper to the COMMA register.
8458                 */
8459                AdvWriteDWordRegister(iop_base, IOPDW_COMMA,
8460                                      le32_to_cpu(new_carrp->carr_pa));
8461        }
8462
8463        return ADV_SUCCESS;
8464}
8465
8466/*
8467 * Execute a single 'struct scsi_cmnd'.
8468 */
8469static int asc_execute_scsi_cmnd(struct scsi_cmnd *scp)
8470{
8471        int ret, err_code;
8472        struct asc_board *boardp = shost_priv(scp->device->host);
8473
8474        ASC_DBG(1, "scp 0x%p\n", scp);
8475
8476        if (ASC_NARROW_BOARD(boardp)) {
8477                ASC_DVC_VAR *asc_dvc = &boardp->dvc_var.asc_dvc_var;
8478                struct asc_scsi_q asc_scsi_q;
8479
8480                ret = asc_build_req(boardp, scp, &asc_scsi_q);
8481                if (ret != ASC_NOERROR) {
8482                        ASC_STATS(scp->device->host, build_error);
8483                        return ret;
8484                }
8485
8486                ret = AscExeScsiQueue(asc_dvc, &asc_scsi_q);
8487                kfree(asc_scsi_q.sg_head);
8488                err_code = asc_dvc->err_code;
8489        } else {
8490                ADV_DVC_VAR *adv_dvc = &boardp->dvc_var.adv_dvc_var;
8491                adv_req_t *adv_reqp;
8492
8493                switch (adv_build_req(boardp, scp, &adv_reqp)) {
8494                case ASC_NOERROR:
8495                        ASC_DBG(3, "adv_build_req ASC_NOERROR\n");
8496                        break;
8497                case ASC_BUSY:
8498                        ASC_DBG(1, "adv_build_req ASC_BUSY\n");
8499                        /*
8500                         * The asc_stats fields 'adv_build_noreq' and
8501                         * 'adv_build_nosg' count wide board busy conditions.
8502                         * They are updated in adv_build_req and
8503                         * adv_get_sglist, respectively.
8504                         */
8505                        return ASC_BUSY;
8506                case ASC_ERROR:
8507                default:
8508                        ASC_DBG(1, "adv_build_req ASC_ERROR\n");
8509                        ASC_STATS(scp->device->host, build_error);
8510                        return ASC_ERROR;
8511                }
8512
8513                ret = AdvExeScsiQueue(adv_dvc, adv_reqp);
8514                err_code = adv_dvc->err_code;
8515        }
8516
8517        switch (ret) {
8518        case ASC_NOERROR:
8519                ASC_STATS(scp->device->host, exe_noerror);
8520                /*
8521                 * Increment monotonically increasing per device
8522                 * successful request counter. Wrapping doesn't matter.
8523                 */
8524                boardp->reqcnt[scp->device->id]++;
8525                ASC_DBG(1, "ExeScsiQueue() ASC_NOERROR\n");
8526                break;
8527        case ASC_BUSY:
8528                ASC_DBG(1, "ExeScsiQueue() ASC_BUSY\n");
8529                ASC_STATS(scp->device->host, exe_busy);
8530                break;
8531        case ASC_ERROR:
8532                scmd_printk(KERN_ERR, scp, "ExeScsiQueue() ASC_ERROR, "
8533                        "err_code 0x%x\n", err_code);
8534                ASC_STATS(scp->device->host, exe_error);
8535                scp->result = HOST_BYTE(DID_ERROR);
8536                break;
8537        default:
8538                scmd_printk(KERN_ERR, scp, "ExeScsiQueue() unknown, "
8539                        "err_code 0x%x\n", err_code);
8540                ASC_STATS(scp->device->host, exe_unknown);
8541                scp->result = HOST_BYTE(DID_ERROR);
8542                break;
8543        }
8544
8545        ASC_DBG(1, "end\n");
8546        return ret;
8547}
8548
8549/*
8550 * advansys_queuecommand() - interrupt-driven I/O entrypoint.
8551 *
8552 * This function always returns 0. Command return status is saved
8553 * in the 'scp' result field.
8554 */
8555static int
8556advansys_queuecommand_lck(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *))
8557{
8558        struct Scsi_Host *shost = scp->device->host;
8559        int asc_res, result = 0;
8560
8561        ASC_STATS(shost, queuecommand);
8562        scp->scsi_done = done;
8563
8564        asc_res = asc_execute_scsi_cmnd(scp);
8565
8566        switch (asc_res) {
8567        case ASC_NOERROR:
8568                break;
8569        case ASC_BUSY:
8570                result = SCSI_MLQUEUE_HOST_BUSY;
8571                break;
8572        case ASC_ERROR:
8573        default:
8574                asc_scsi_done(scp);
8575                break;
8576        }
8577
8578        return result;
8579}
8580
8581static DEF_SCSI_QCMD(advansys_queuecommand)
8582
8583static ushort AscGetEisaChipCfg(PortAddr iop_base)
8584{
8585        PortAddr eisa_cfg_iop = (PortAddr) ASC_GET_EISA_SLOT(iop_base) |
8586            (PortAddr) (ASC_EISA_CFG_IOP_MASK);
8587        return inpw(eisa_cfg_iop);
8588}
8589
8590/*
8591 * Return the BIOS address of the adapter at the specified
8592 * I/O port and with the specified bus type.
8593 */
8594static unsigned short AscGetChipBiosAddress(PortAddr iop_base,
8595                                            unsigned short bus_type)
8596{
8597        unsigned short cfg_lsw;
8598        unsigned short bios_addr;
8599
8600        /*
8601         * The PCI BIOS is re-located by the motherboard BIOS. Because
8602         * of this the driver can not determine where a PCI BIOS is
8603         * loaded and executes.
8604         */
8605        if (bus_type & ASC_IS_PCI)
8606                return 0;
8607
8608        if ((bus_type & ASC_IS_EISA) != 0) {
8609                cfg_lsw = AscGetEisaChipCfg(iop_base);
8610                cfg_lsw &= 0x000F;
8611                bios_addr = ASC_BIOS_MIN_ADDR + cfg_lsw * ASC_BIOS_BANK_SIZE;
8612                return bios_addr;
8613        }
8614
8615        cfg_lsw = AscGetChipCfgLsw(iop_base);
8616
8617        /*
8618         *  ISA PnP uses the top bit as the 32K BIOS flag
8619         */
8620        if (bus_type == ASC_IS_ISAPNP)
8621                cfg_lsw &= 0x7FFF;
8622        bios_addr = ASC_BIOS_MIN_ADDR + (cfg_lsw >> 12) * ASC_BIOS_BANK_SIZE;
8623        return bios_addr;
8624}
8625
8626static uchar AscSetChipScsiID(PortAddr iop_base, uchar new_host_id)
8627{
8628        ushort cfg_lsw;
8629
8630        if (AscGetChipScsiID(iop_base) == new_host_id) {
8631                return (new_host_id);
8632        }
8633        cfg_lsw = AscGetChipCfgLsw(iop_base);
8634        cfg_lsw &= 0xF8FF;
8635        cfg_lsw |= (ushort)((new_host_id & ASC_MAX_TID) << 8);
8636        AscSetChipCfgLsw(iop_base, cfg_lsw);
8637        return (AscGetChipScsiID(iop_base));
8638}
8639
8640static unsigned char AscGetChipScsiCtrl(PortAddr iop_base)
8641{
8642        unsigned char sc;
8643
8644        AscSetBank(iop_base, 1);
8645        sc = inp(iop_base + IOP_REG_SC);
8646        AscSetBank(iop_base, 0);
8647        return sc;
8648}
8649
8650static unsigned char AscGetChipVersion(PortAddr iop_base,
8651                                       unsigned short bus_type)
8652{
8653        if (bus_type & ASC_IS_EISA) {
8654                PortAddr eisa_iop;
8655                unsigned char revision;
8656                eisa_iop = (PortAddr) ASC_GET_EISA_SLOT(iop_base) |
8657                    (PortAddr) ASC_EISA_REV_IOP_MASK;
8658                revision = inp(eisa_iop);
8659                return ASC_CHIP_MIN_VER_EISA - 1 + revision;
8660        }
8661        return AscGetChipVerNo(iop_base);
8662}
8663
8664#ifdef CONFIG_ISA
8665static void AscEnableIsaDma(uchar dma_channel)
8666{
8667        if (dma_channel < 4) {
8668                outp(0x000B, (ushort)(0xC0 | dma_channel));
8669                outp(0x000A, dma_channel);
8670        } else if (dma_channel < 8) {
8671                outp(0x00D6, (ushort)(0xC0 | (dma_channel - 4)));
8672                outp(0x00D4, (ushort)(dma_channel - 4));
8673        }
8674}
8675#endif /* CONFIG_ISA */
8676
8677static int AscStopQueueExe(PortAddr iop_base)
8678{
8679        int count = 0;
8680
8681        if (AscReadLramByte(iop_base, ASCV_STOP_CODE_B) == 0) {
8682                AscWriteLramByte(iop_base, ASCV_STOP_CODE_B,
8683                                 ASC_STOP_REQ_RISC_STOP);
8684                do {
8685                        if (AscReadLramByte(iop_base, ASCV_STOP_CODE_B) &
8686                            ASC_STOP_ACK_RISC_STOP) {
8687                                return (1);
8688                        }
8689                        mdelay(100);
8690                } while (count++ < 20);
8691        }
8692        return (0);
8693}
8694
8695static unsigned int AscGetMaxDmaCount(ushort bus_type)
8696{
8697        if (bus_type & ASC_IS_ISA)
8698                return ASC_MAX_ISA_DMA_COUNT;
8699        else if (bus_type & (ASC_IS_EISA | ASC_IS_VL))
8700                return ASC_MAX_VL_DMA_COUNT;
8701        return ASC_MAX_PCI_DMA_COUNT;
8702}
8703
8704#ifdef CONFIG_ISA
8705static ushort AscGetIsaDmaChannel(PortAddr iop_base)
8706{
8707        ushort channel;
8708
8709        channel = AscGetChipCfgLsw(iop_base) & 0x0003;
8710        if (channel == 0x03)
8711                return (0);
8712        else if (channel == 0x00)
8713                return (7);
8714        return (channel + 4);
8715}
8716
8717static ushort AscSetIsaDmaChannel(PortAddr iop_base, ushort dma_channel)
8718{
8719        ushort cfg_lsw;
8720        uchar value;
8721
8722        if ((dma_channel >= 5) && (dma_channel <= 7)) {
8723                if (dma_channel == 7)
8724                        value = 0x00;
8725                else
8726                        value = dma_channel - 4;
8727                cfg_lsw = AscGetChipCfgLsw(iop_base) & 0xFFFC;
8728                cfg_lsw |= value;
8729                AscSetChipCfgLsw(iop_base, cfg_lsw);
8730                return (AscGetIsaDmaChannel(iop_base));
8731        }
8732        return 0;
8733}
8734
8735static uchar AscGetIsaDmaSpeed(PortAddr iop_base)
8736{
8737        uchar speed_value;
8738
8739        AscSetBank(iop_base, 1);
8740        speed_value = AscReadChipDmaSpeed(iop_base);
8741        speed_value &= 0x07;
8742        AscSetBank(iop_base, 0);
8743        return speed_value;
8744}
8745
8746static uchar AscSetIsaDmaSpeed(PortAddr iop_base, uchar speed_value)
8747{
8748        speed_value &= 0x07;
8749        AscSetBank(iop_base, 1);
8750        AscWriteChipDmaSpeed(iop_base, speed_value);
8751        AscSetBank(iop_base, 0);
8752        return AscGetIsaDmaSpeed(iop_base);
8753}
8754#endif /* CONFIG_ISA */
8755
8756static void AscInitAscDvcVar(ASC_DVC_VAR *asc_dvc)
8757{
8758        int i;
8759        PortAddr iop_base;
8760        uchar chip_version;
8761
8762        iop_base = asc_dvc->iop_base;
8763        asc_dvc->err_code = 0;
8764        if ((asc_dvc->bus_type &
8765             (ASC_IS_ISA | ASC_IS_PCI | ASC_IS_EISA | ASC_IS_VL)) == 0) {
8766                asc_dvc->err_code |= ASC_IERR_NO_BUS_TYPE;
8767        }
8768        AscSetChipControl(iop_base, CC_HALT);
8769        AscSetChipStatus(iop_base, 0);
8770        asc_dvc->bug_fix_cntl = 0;
8771        asc_dvc->pci_fix_asyn_xfer = 0;
8772        asc_dvc->pci_fix_asyn_xfer_always = 0;
8773        /* asc_dvc->init_state initialized in AscInitGetConfig(). */
8774        asc_dvc->sdtr_done = 0;
8775        asc_dvc->cur_total_qng = 0;
8776        asc_dvc->is_in_int = false;
8777        asc_dvc->in_critical_cnt = 0;
8778        asc_dvc->last_q_shortage = 0;
8779        asc_dvc->use_tagged_qng = 0;
8780        asc_dvc->no_scam = 0;
8781        asc_dvc->unit_not_ready = 0;
8782        asc_dvc->queue_full_or_busy = 0;
8783        asc_dvc->redo_scam = 0;
8784        asc_dvc->res2 = 0;
8785        asc_dvc->min_sdtr_index = 0;
8786        asc_dvc->cfg->can_tagged_qng = 0;
8787        asc_dvc->cfg->cmd_qng_enabled = 0;
8788        asc_dvc->dvc_cntl = ASC_DEF_DVC_CNTL;
8789        asc_dvc->init_sdtr = 0;
8790        asc_dvc->max_total_qng = ASC_DEF_MAX_TOTAL_QNG;
8791        asc_dvc->scsi_reset_wait = 3;
8792        asc_dvc->start_motor = ASC_SCSI_WIDTH_BIT_SET;
8793        asc_dvc->max_dma_count = AscGetMaxDmaCount(asc_dvc->bus_type);
8794        asc_dvc->cfg->sdtr_enable = ASC_SCSI_WIDTH_BIT_SET;
8795        asc_dvc->cfg->disc_enable = ASC_SCSI_WIDTH_BIT_SET;
8796        asc_dvc->cfg->chip_scsi_id = ASC_DEF_CHIP_SCSI_ID;
8797        chip_version = AscGetChipVersion(iop_base, asc_dvc->bus_type);
8798        asc_dvc->cfg->chip_version = chip_version;
8799        asc_dvc->sdtr_period_tbl = asc_syn_xfer_period;
8800        asc_dvc->max_sdtr_index = 7;
8801        if ((asc_dvc->bus_type & ASC_IS_PCI) &&
8802            (chip_version >= ASC_CHIP_VER_PCI_ULTRA_3150)) {
8803                asc_dvc->bus_type = ASC_IS_PCI_ULTRA;
8804                asc_dvc->sdtr_period_tbl = asc_syn_ultra_xfer_period;
8805                asc_dvc->max_sdtr_index = 15;
8806                if (chip_version == ASC_CHIP_VER_PCI_ULTRA_3150) {
8807                        AscSetExtraControl(iop_base,
8808                                           (SEC_ACTIVE_NEGATE | SEC_SLEW_RATE));
8809                } else if (chip_version >= ASC_CHIP_VER_PCI_ULTRA_3050) {
8810                        AscSetExtraControl(iop_base,
8811                                           (SEC_ACTIVE_NEGATE |
8812                                            SEC_ENABLE_FILTER));
8813                }
8814        }
8815        if (asc_dvc->bus_type == ASC_IS_PCI) {
8816                AscSetExtraControl(iop_base,
8817                                   (SEC_ACTIVE_NEGATE | SEC_SLEW_RATE));
8818        }
8819
8820        asc_dvc->cfg->isa_dma_speed = ASC_DEF_ISA_DMA_SPEED;
8821#ifdef CONFIG_ISA
8822        if ((asc_dvc->bus_type & ASC_IS_ISA) != 0) {
8823                if (chip_version >= ASC_CHIP_MIN_VER_ISA_PNP) {
8824                        AscSetChipIFC(iop_base, IFC_INIT_DEFAULT);
8825                        asc_dvc->bus_type = ASC_IS_ISAPNP;
8826                }
8827                asc_dvc->cfg->isa_dma_channel =
8828                    (uchar)AscGetIsaDmaChannel(iop_base);
8829        }
8830#endif /* CONFIG_ISA */
8831        for (i = 0; i <= ASC_MAX_TID; i++) {
8832                asc_dvc->cur_dvc_qng[i] = 0;
8833                asc_dvc->max_dvc_qng[i] = ASC_MAX_SCSI1_QNG;
8834                asc_dvc->scsiq_busy_head[i] = (ASC_SCSI_Q *)0L;
8835                asc_dvc->scsiq_busy_tail[i] = (ASC_SCSI_Q *)0L;
8836                asc_dvc->cfg->max_tag_qng[i] = ASC_MAX_INRAM_TAG_QNG;
8837        }
8838}
8839
8840static int AscWriteEEPCmdReg(PortAddr iop_base, uchar cmd_reg)
8841{
8842        int retry;
8843
8844        for (retry = 0; retry < ASC_EEP_MAX_RETRY; retry++) {
8845                unsigned char read_back;
8846                AscSetChipEEPCmd(iop_base, cmd_reg);
8847                mdelay(1);
8848                read_back = AscGetChipEEPCmd(iop_base);
8849                if (read_back == cmd_reg)
8850                        return 1;
8851        }
8852        return 0;
8853}
8854
8855static void AscWaitEEPRead(void)
8856{
8857        mdelay(1);
8858}
8859
8860static ushort AscReadEEPWord(PortAddr iop_base, uchar addr)
8861{
8862        ushort read_wval;
8863        uchar cmd_reg;
8864
8865        AscWriteEEPCmdReg(iop_base, ASC_EEP_CMD_WRITE_DISABLE);
8866        AscWaitEEPRead();
8867        cmd_reg = addr | ASC_EEP_CMD_READ;
8868        AscWriteEEPCmdReg(iop_base, cmd_reg);
8869        AscWaitEEPRead();
8870        read_wval = AscGetChipEEPData(iop_base);
8871        AscWaitEEPRead();
8872        return read_wval;
8873}
8874
8875static ushort AscGetEEPConfig(PortAddr iop_base, ASCEEP_CONFIG *cfg_buf,
8876                              ushort bus_type)
8877{
8878        ushort wval;
8879        ushort sum;
8880        ushort *wbuf;
8881        int cfg_beg;
8882        int cfg_end;
8883        int uchar_end_in_config = ASC_EEP_MAX_DVC_ADDR - 2;
8884        int s_addr;
8885
8886        wbuf = (ushort *)cfg_buf;
8887        sum = 0;
8888        /* Read two config words; Byte-swapping done by AscReadEEPWord(). */
8889        for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
8890                *wbuf = AscReadEEPWord(iop_base, (uchar)s_addr);
8891                sum += *wbuf;
8892        }
8893        if (bus_type & ASC_IS_VL) {
8894                cfg_beg = ASC_EEP_DVC_CFG_BEG_VL;
8895                cfg_end = ASC_EEP_MAX_DVC_ADDR_VL;
8896        } else {
8897                cfg_beg = ASC_EEP_DVC_CFG_BEG;
8898                cfg_end = ASC_EEP_MAX_DVC_ADDR;
8899        }
8900        for (s_addr = cfg_beg; s_addr <= (cfg_end - 1); s_addr++, wbuf++) {
8901                wval = AscReadEEPWord(iop_base, (uchar)s_addr);
8902                if (s_addr <= uchar_end_in_config) {
8903                        /*
8904                         * Swap all char fields - must unswap bytes already swapped
8905                         * by AscReadEEPWord().
8906                         */
8907                        *wbuf = le16_to_cpu(wval);
8908                } else {
8909                        /* Don't swap word field at the end - cntl field. */
8910                        *wbuf = wval;
8911                }
8912                sum += wval;    /* Checksum treats all EEPROM data as words. */
8913        }
8914        /*
8915         * Read the checksum word which will be compared against 'sum'
8916         * by the caller. Word field already swapped.
8917         */
8918        *wbuf = AscReadEEPWord(iop_base, (uchar)s_addr);
8919        return sum;
8920}
8921
8922static int AscTestExternalLram(ASC_DVC_VAR *asc_dvc)
8923{
8924        PortAddr iop_base;
8925        ushort q_addr;
8926        ushort saved_word;
8927        int sta;
8928
8929        iop_base = asc_dvc->iop_base;
8930        sta = 0;
8931        q_addr = ASC_QNO_TO_QADDR(241);
8932        saved_word = AscReadLramWord(iop_base, q_addr);
8933        AscSetChipLramAddr(iop_base, q_addr);
8934        AscSetChipLramData(iop_base, 0x55AA);
8935        mdelay(10);
8936        AscSetChipLramAddr(iop_base, q_addr);
8937        if (AscGetChipLramData(iop_base) == 0x55AA) {
8938                sta = 1;
8939                AscWriteLramWord(iop_base, q_addr, saved_word);
8940        }
8941        return (sta);
8942}
8943
8944static void AscWaitEEPWrite(void)
8945{
8946        mdelay(20);
8947}
8948
8949static int AscWriteEEPDataReg(PortAddr iop_base, ushort data_reg)
8950{
8951        ushort read_back;
8952        int retry;
8953
8954        retry = 0;
8955        while (true) {
8956                AscSetChipEEPData(iop_base, data_reg);
8957                mdelay(1);
8958                read_back = AscGetChipEEPData(iop_base);
8959                if (read_back == data_reg) {
8960                        return (1);
8961                }
8962                if (retry++ > ASC_EEP_MAX_RETRY) {
8963                        return (0);
8964                }
8965        }
8966}
8967
8968static ushort AscWriteEEPWord(PortAddr iop_base, uchar addr, ushort word_val)
8969{
8970        ushort read_wval;
8971
8972        read_wval = AscReadEEPWord(iop_base, addr);
8973        if (read_wval != word_val) {
8974                AscWriteEEPCmdReg(iop_base, ASC_EEP_CMD_WRITE_ABLE);
8975                AscWaitEEPRead();
8976                AscWriteEEPDataReg(iop_base, word_val);
8977                AscWaitEEPRead();
8978                AscWriteEEPCmdReg(iop_base,
8979                                  (uchar)((uchar)ASC_EEP_CMD_WRITE | addr));
8980                AscWaitEEPWrite();
8981                AscWriteEEPCmdReg(iop_base, ASC_EEP_CMD_WRITE_DISABLE);
8982                AscWaitEEPRead();
8983                return (AscReadEEPWord(iop_base, addr));
8984        }
8985        return (read_wval);
8986}
8987
8988static int AscSetEEPConfigOnce(PortAddr iop_base, ASCEEP_CONFIG *cfg_buf,
8989                               ushort bus_type)
8990{
8991        int n_error;
8992        ushort *wbuf;
8993        ushort word;
8994        ushort sum;
8995        int s_addr;
8996        int cfg_beg;
8997        int cfg_end;
8998        int uchar_end_in_config = ASC_EEP_MAX_DVC_ADDR - 2;
8999
9000        wbuf = (ushort *)cfg_buf;

9001        n_error = 0;
9002        sum = 0;
9003        /* Write two config words; AscWriteEEPWord() will swap bytes. */
9004        for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
9005                sum += *wbuf;
9006                if (*wbuf != AscWriteEEPWord(iop_base, (uchar)s_addr, *wbuf)) {
9007                        n_error++;
9008                }
9009        }
9010        if (bus_type & ASC_IS_VL) {
9011                cfg_beg = ASC_EEP_DVC_CFG_BEG_VL;
9012                cfg_end = ASC_EEP_MAX_DVC_ADDR_VL;
9013        } else {
9014                cfg_beg = ASC_EEP_DVC_CFG_BEG;
9015                cfg_end = ASC_EEP_MAX_DVC_ADDR;
9016        }
9017        for (s_addr = cfg_beg; s_addr <= (cfg_end - 1); s_addr++, wbuf++) {
9018                if (s_addr <= uchar_end_in_config) {
9019                        /*
9020                         * This is a char field. Swap char fields before they are
9021                         * swapped again by AscWriteEEPWord().
9022                         */
9023                        word = cpu_to_le16(*wbuf);
9024                        if (word !=
9025                            AscWriteEEPWord(iop_base, (uchar)s_addr, word)) {
9026                                n_error++;
9027                        }
9028                } else {
9029                        /* Don't swap word field at the end - cntl field. */
9030                        if (*wbuf !=
9031                            AscWriteEEPWord(iop_base, (uchar)s_addr, *wbuf)) {
9032                                n_error++;
9033                        }
9034                }
9035                sum += *wbuf;   /* Checksum calculated from word values. */
9036        }
9037        /* Write checksum word. It will be swapped by AscWriteEEPWord(). */
9038        *wbuf = sum;
9039        if (sum != AscWriteEEPWord(iop_base, (uchar)s_addr, sum)) {
9040                n_error++;
9041        }
9042
9043        /* Read EEPROM back again. */
9044        wbuf = (ushort *)cfg_buf;
9045        /*
9046         * Read two config words; Byte-swapping done by AscReadEEPWord().
9047         */
9048        for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
9049                if (*wbuf != AscReadEEPWord(iop_base, (uchar)s_addr)) {
9050                        n_error++;
9051                }
9052        }
9053        if (bus_type & ASC_IS_VL) {
9054                cfg_beg = ASC_EEP_DVC_CFG_BEG_VL;
9055                cfg_end = ASC_EEP_MAX_DVC_ADDR_VL;
9056        } else {
9057                cfg_beg = ASC_EEP_DVC_CFG_BEG;
9058                cfg_end = ASC_EEP_MAX_DVC_ADDR;
9059        }
9060        for (s_addr = cfg_beg; s_addr <= (cfg_end - 1); s_addr++, wbuf++) {
9061                if (s_addr <= uchar_end_in_config) {
9062                        /*
9063                         * Swap all char fields. Must unswap bytes already swapped
9064                         * by AscReadEEPWord().
9065                         */
9066                        word =
9067                            le16_to_cpu(AscReadEEPWord
9068                                        (iop_base, (uchar)s_addr));
9069                } else {
9070                        /* Don't swap word field at the end - cntl field. */
9071                        word = AscReadEEPWord(iop_base, (uchar)s_addr);
9072                }
9073                if (*wbuf != word) {
9074                        n_error++;
9075                }
9076        }
9077        /* Read checksum; Byte swapping not needed. */
9078        if (AscReadEEPWord(iop_base, (uchar)s_addr) != sum) {
9079                n_error++;
9080        }
9081        return n_error;
9082}
9083
9084static int AscSetEEPConfig(PortAddr iop_base, ASCEEP_CONFIG *cfg_buf,
9085                           ushort bus_type)
9086{
9087        int retry;
9088        int n_error;
9089
9090        retry = 0;
9091        while (true) {
9092                if ((n_error = AscSetEEPConfigOnce(iop_base, cfg_buf,
9093                                                   bus_type)) == 0) {
9094                        break;
9095                }
9096                if (++retry > ASC_EEP_MAX_RETRY) {
9097                        break;
9098                }
9099        }
9100        return n_error;
9101}
9102
9103static int AscInitFromEEP(ASC_DVC_VAR *asc_dvc)
9104{
9105        ASCEEP_CONFIG eep_config_buf;
9106        ASCEEP_CONFIG *eep_config;
9107        PortAddr iop_base;
9108        ushort chksum;
9109        ushort warn_code;
9110        ushort cfg_msw, cfg_lsw;
9111        int i;
9112        int write_eep = 0;
9113
9114        iop_base = asc_dvc->iop_base;
9115        warn_code = 0;
9116        AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0x00FE);
9117        AscStopQueueExe(iop_base);
9118        if ((AscStopChip(iop_base)) ||
9119            (AscGetChipScsiCtrl(iop_base) != 0)) {
9120                asc_dvc->init_state |= ASC_INIT_RESET_SCSI_DONE;
9121                AscResetChipAndScsiBus(asc_dvc);
9122                mdelay(asc_dvc->scsi_reset_wait * 1000); /* XXX: msleep? */
9123        }
9124        if (!AscIsChipHalted(iop_base)) {
9125                asc_dvc->err_code |= ASC_IERR_START_STOP_CHIP;
9126                return (warn_code);
9127        }
9128        AscSetPCAddr(iop_base, ASC_MCODE_START_ADDR);
9129        if (AscGetPCAddr(iop_base) != ASC_MCODE_START_ADDR) {
9130                asc_dvc->err_code |= ASC_IERR_SET_PC_ADDR;
9131                return (warn_code);
9132        }
9133        eep_config = (ASCEEP_CONFIG *)&eep_config_buf;
9134        cfg_msw = AscGetChipCfgMsw(iop_base);
9135        cfg_lsw = AscGetChipCfgLsw(iop_base);
9136        if ((cfg_msw & ASC_CFG_MSW_CLR_MASK) != 0) {
9137                cfg_msw &= ~ASC_CFG_MSW_CLR_MASK;
9138                warn_code |= ASC_WARN_CFG_MSW_RECOVER;
9139                AscSetChipCfgMsw(iop_base, cfg_msw);
9140        }
9141        chksum = AscGetEEPConfig(iop_base, eep_config, asc_dvc->bus_type);
9142        ASC_DBG(1, "chksum 0x%x\n", chksum);
9143        if (chksum == 0) {
9144                chksum = 0xaa55;
9145        }
9146        if (AscGetChipStatus(iop_base) & CSW_AUTO_CONFIG) {
9147                warn_code |= ASC_WARN_AUTO_CONFIG;
9148                if (asc_dvc->cfg->chip_version == 3) {
9149                        if (eep_config->cfg_lsw != cfg_lsw) {
9150                                warn_code |= ASC_WARN_EEPROM_RECOVER;
9151                                eep_config->cfg_lsw =
9152                                    AscGetChipCfgLsw(iop_base);
9153                        }
9154                        if (eep_config->cfg_msw != cfg_msw) {
9155                                warn_code |= ASC_WARN_EEPROM_RECOVER;
9156                                eep_config->cfg_msw =
9157                                    AscGetChipCfgMsw(iop_base);
9158                        }
9159                }
9160        }
9161        eep_config->cfg_msw &= ~ASC_CFG_MSW_CLR_MASK;
9162        eep_config->cfg_lsw |= ASC_CFG0_HOST_INT_ON;
9163        ASC_DBG(1, "eep_config->chksum 0x%x\n", eep_config->chksum);
9164        if (chksum != eep_config->chksum) {
9165                if (AscGetChipVersion(iop_base, asc_dvc->bus_type) ==
9166                    ASC_CHIP_VER_PCI_ULTRA_3050) {
9167                        ASC_DBG(1, "chksum error ignored; EEPROM-less board\n");
9168                        eep_config->init_sdtr = 0xFF;
9169                        eep_config->disc_enable = 0xFF;
9170                        eep_config->start_motor = 0xFF;
9171                        eep_config->use_cmd_qng = 0;
9172                        eep_config->max_total_qng = 0xF0;
9173                        eep_config->max_tag_qng = 0x20;
9174                        eep_config->cntl = 0xBFFF;
9175                        ASC_EEP_SET_CHIP_ID(eep_config, 7);
9176                        eep_config->no_scam = 0;
9177                        eep_config->adapter_info[0] = 0;
9178                        eep_config->adapter_info[1] = 0;
9179                        eep_config->adapter_info[2] = 0;
9180                        eep_config->adapter_info[3] = 0;
9181                        eep_config->adapter_info[4] = 0;
9182                        /* Indicate EEPROM-less board. */
9183                        eep_config->adapter_info[5] = 0xBB;
9184                } else {
9185                        ASC_PRINT
9186                            ("AscInitFromEEP: EEPROM checksum error; Will try to re-write EEPROM.\n");
9187                        write_eep = 1;
9188                        warn_code |= ASC_WARN_EEPROM_CHKSUM;
9189                }
9190        }
9191        asc_dvc->cfg->sdtr_enable = eep_config->init_sdtr;
9192        asc_dvc->cfg->disc_enable = eep_config->disc_enable;
9193        asc_dvc->cfg->cmd_qng_enabled = eep_config->use_cmd_qng;
9194        asc_dvc->cfg->isa_dma_speed = ASC_EEP_GET_DMA_SPD(eep_config);
9195        asc_dvc->start_motor = eep_config->start_motor;
9196        asc_dvc->dvc_cntl = eep_config->cntl;
9197        asc_dvc->no_scam = eep_config->no_scam;
9198        asc_dvc->cfg->adapter_info[0] = eep_config->adapter_info[0];
9199        asc_dvc->cfg->adapter_info[1] = eep_config->adapter_info[1];
9200        asc_dvc->cfg->adapter_info[2] = eep_config->adapter_info[2];
9201        asc_dvc->cfg->adapter_info[3] = eep_config->adapter_info[3];
9202        asc_dvc->cfg->adapter_info[4] = eep_config->adapter_info[4];
9203        asc_dvc->cfg->adapter_info[5] = eep_config->adapter_info[5];
9204        if (!AscTestExternalLram(asc_dvc)) {
9205                if (((asc_dvc->bus_type & ASC_IS_PCI_ULTRA) ==
9206                     ASC_IS_PCI_ULTRA)) {
9207                        eep_config->max_total_qng =
9208                            ASC_MAX_PCI_ULTRA_INRAM_TOTAL_QNG;
9209                        eep_config->max_tag_qng =
9210                            ASC_MAX_PCI_ULTRA_INRAM_TAG_QNG;
9211                } else {
9212                        eep_config->cfg_msw |= 0x0800;
9213                        cfg_msw |= 0x0800;
9214                        AscSetChipCfgMsw(iop_base, cfg_msw);
9215                        eep_config->max_total_qng = ASC_MAX_PCI_INRAM_TOTAL_QNG;
9216                        eep_config->max_tag_qng = ASC_MAX_INRAM_TAG_QNG;
9217                }
9218        } else {
9219        }
9220        if (eep_config->max_total_qng < ASC_MIN_TOTAL_QNG) {
9221                eep_config->max_total_qng = ASC_MIN_TOTAL_QNG;
9222        }
9223        if (eep_config->max_total_qng > ASC_MAX_TOTAL_QNG) {
9224                eep_config->max_total_qng = ASC_MAX_TOTAL_QNG;
9225        }
9226        if (eep_config->max_tag_qng > eep_config->max_total_qng) {
9227                eep_config->max_tag_qng = eep_config->max_total_qng;
9228        }
9229        if (eep_config->max_tag_qng < ASC_MIN_TAG_Q_PER_DVC) {
9230                eep_config->max_tag_qng = ASC_MIN_TAG_Q_PER_DVC;
9231        }
9232        asc_dvc->max_total_qng = eep_config->max_total_qng;
9233        if ((eep_config->use_cmd_qng & eep_config->disc_enable) !=
9234            eep_config->use_cmd_qng) {
9235                eep_config->disc_enable = eep_config->use_cmd_qng;
9236                warn_code |= ASC_WARN_CMD_QNG_CONFLICT;
9237        }
9238        ASC_EEP_SET_CHIP_ID(eep_config,
9239                            ASC_EEP_GET_CHIP_ID(eep_config) & ASC_MAX_TID);
9240        asc_dvc->cfg->chip_scsi_id = ASC_EEP_GET_CHIP_ID(eep_config);
9241        if (((asc_dvc->bus_type & ASC_IS_PCI_ULTRA) == ASC_IS_PCI_ULTRA) &&
9242            !(asc_dvc->dvc_cntl & ASC_CNTL_SDTR_ENABLE_ULTRA)) {
9243                asc_dvc->min_sdtr_index = ASC_SDTR_ULTRA_PCI_10MB_INDEX;
9244        }
9245
9246        for (i = 0; i <= ASC_MAX_TID; i++) {
9247                asc_dvc->dos_int13_table[i] = eep_config->dos_int13_table[i];
9248                asc_dvc->cfg->max_tag_qng[i] = eep_config->max_tag_qng;
9249                asc_dvc->cfg->sdtr_period_offset[i] =
9250                    (uchar)(ASC_DEF_SDTR_OFFSET |
9251                            (asc_dvc->min_sdtr_index << 4));
9252        }
9253        eep_config->cfg_msw = AscGetChipCfgMsw(iop_base);
9254        if (write_eep) {
9255                if ((i = AscSetEEPConfig(iop_base, eep_config,
9256                                     asc_dvc->bus_type)) != 0) {
9257                        ASC_PRINT1
9258                            ("AscInitFromEEP: Failed to re-write EEPROM with %d errors.\n",
9259                             i);
9260                } else {
9261                        ASC_PRINT
9262                            ("AscInitFromEEP: Successfully re-wrote EEPROM.\n");
9263                }
9264        }
9265        return (warn_code);
9266}
9267
9268static int AscInitGetConfig(struct Scsi_Host *shost)
9269{
9270        struct asc_board *board = shost_priv(shost);
9271        ASC_DVC_VAR *asc_dvc = &board->dvc_var.asc_dvc_var;
9272        unsigned short warn_code = 0;
9273
9274        asc_dvc->init_state = ASC_INIT_STATE_BEG_GET_CFG;
9275        if (asc_dvc->err_code != 0)
9276                return asc_dvc->err_code;
9277
9278        if (AscFindSignature(asc_dvc->iop_base)) {
9279                AscInitAscDvcVar(asc_dvc);
9280                warn_code = AscInitFromEEP(asc_dvc);
9281                asc_dvc->init_state |= ASC_INIT_STATE_END_GET_CFG;
9282                if (asc_dvc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT)
9283                        asc_dvc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT;
9284        } else {
9285                asc_dvc->err_code = ASC_IERR_BAD_SIGNATURE;
9286        }
9287
9288        switch (warn_code) {
9289        case 0: /* No error */
9290                break;
9291        case ASC_WARN_IO_PORT_ROTATE:
9292                shost_printk(KERN_WARNING, shost, "I/O port address "
9293                                "modified\n");
9294                break;
9295        case ASC_WARN_AUTO_CONFIG:
9296                shost_printk(KERN_WARNING, shost, "I/O port increment switch "
9297                                "enabled\n");
9298                break;
9299        case ASC_WARN_EEPROM_CHKSUM:
9300                shost_printk(KERN_WARNING, shost, "EEPROM checksum error\n");
9301                break;
9302        case ASC_WARN_IRQ_MODIFIED:
9303                shost_printk(KERN_WARNING, shost, "IRQ modified\n");
9304                break;
9305        case ASC_WARN_CMD_QNG_CONFLICT:
9306                shost_printk(KERN_WARNING, shost, "tag queuing enabled w/o "
9307                                "disconnects\n");
9308                break;
9309        default:
9310                shost_printk(KERN_WARNING, shost, "unknown warning: 0x%x\n",
9311                                warn_code);
9312                break;
9313        }
9314
9315        if (asc_dvc->err_code != 0)
9316                shost_printk(KERN_ERR, shost, "error 0x%x at init_state "
9317                        "0x%x\n", asc_dvc->err_code, asc_dvc->init_state);
9318
9319        return asc_dvc->err_code;
9320}
9321
9322static int AscInitSetConfig(struct pci_dev *pdev, struct Scsi_Host *shost)
9323{
9324        struct asc_board *board = shost_priv(shost);
9325        ASC_DVC_VAR *asc_dvc = &board->dvc_var.asc_dvc_var;
9326        PortAddr iop_base = asc_dvc->iop_base;
9327        unsigned short cfg_msw;
9328        unsigned short warn_code = 0;
9329
9330        asc_dvc->init_state |= ASC_INIT_STATE_BEG_SET_CFG;
9331        if (asc_dvc->err_code != 0)
9332                return asc_dvc->err_code;
9333        if (!AscFindSignature(asc_dvc->iop_base)) {
9334                asc_dvc->err_code = ASC_IERR_BAD_SIGNATURE;
9335                return asc_dvc->err_code;
9336        }
9337
9338        cfg_msw = AscGetChipCfgMsw(iop_base);
9339        if ((cfg_msw & ASC_CFG_MSW_CLR_MASK) != 0) {
9340                cfg_msw &= ~ASC_CFG_MSW_CLR_MASK;
9341                warn_code |= ASC_WARN_CFG_MSW_RECOVER;
9342                AscSetChipCfgMsw(iop_base, cfg_msw);
9343        }
9344        if ((asc_dvc->cfg->cmd_qng_enabled & asc_dvc->cfg->disc_enable) !=
9345            asc_dvc->cfg->cmd_qng_enabled) {
9346                asc_dvc->cfg->disc_enable = asc_dvc->cfg->cmd_qng_enabled;
9347                warn_code |= ASC_WARN_CMD_QNG_CONFLICT;
9348        }
9349        if (AscGetChipStatus(iop_base) & CSW_AUTO_CONFIG) {
9350                warn_code |= ASC_WARN_AUTO_CONFIG;
9351        }
9352#ifdef CONFIG_PCI
9353        if (asc_dvc->bus_type & ASC_IS_PCI) {
9354                cfg_msw &= 0xFFC0;
9355                AscSetChipCfgMsw(iop_base, cfg_msw);
9356                if ((asc_dvc->bus_type & ASC_IS_PCI_ULTRA) == ASC_IS_PCI_ULTRA) {
9357                } else {
9358                        if ((pdev->device == PCI_DEVICE_ID_ASP_1200A) ||
9359                            (pdev->device == PCI_DEVICE_ID_ASP_ABP940)) {
9360                                asc_dvc->bug_fix_cntl |= ASC_BUG_FIX_IF_NOT_DWB;
9361                                asc_dvc->bug_fix_cntl |=
9362                                    ASC_BUG_FIX_ASYN_USE_SYN;
9363                        }
9364                }
9365        } else
9366#endif /* CONFIG_PCI */
9367        if (asc_dvc->bus_type == ASC_IS_ISAPNP) {
9368                if (AscGetChipVersion(iop_base, asc_dvc->bus_type)
9369                    == ASC_CHIP_VER_ASYN_BUG) {
9370                        asc_dvc->bug_fix_cntl |= ASC_BUG_FIX_ASYN_USE_SYN;
9371                }
9372        }
9373        if (AscSetChipScsiID(iop_base, asc_dvc->cfg->chip_scsi_id) !=
9374            asc_dvc->cfg->chip_scsi_id) {
9375                asc_dvc->err_code |= ASC_IERR_SET_SCSI_ID;
9376        }
9377#ifdef CONFIG_ISA
9378        if (asc_dvc->bus_type & ASC_IS_ISA) {
9379                AscSetIsaDmaChannel(iop_base, asc_dvc->cfg->isa_dma_channel);
9380                AscSetIsaDmaSpeed(iop_base, asc_dvc->cfg->isa_dma_speed);
9381        }
9382#endif /* CONFIG_ISA */
9383
9384        asc_dvc->init_state |= ASC_INIT_STATE_END_SET_CFG;
9385
9386        switch (warn_code) {
9387        case 0: /* No error. */
9388                break;
9389        case ASC_WARN_IO_PORT_ROTATE:
9390                shost_printk(KERN_WARNING, shost, "I/O port address "
9391                                "modified\n");
9392                break;
9393        case ASC_WARN_AUTO_CONFIG:
9394                shost_printk(KERN_WARNING, shost, "I/O port increment switch "
9395                                "enabled\n");
9396                break;
9397        case ASC_WARN_EEPROM_CHKSUM:
9398                shost_printk(KERN_WARNING, shost, "EEPROM checksum error\n");
9399                break;
9400        case ASC_WARN_IRQ_MODIFIED:
9401                shost_printk(KERN_WARNING, shost, "IRQ modified\n");
9402                break;
9403        case ASC_WARN_CMD_QNG_CONFLICT:
9404                shost_printk(KERN_WARNING, shost, "tag queuing w/o "
9405                                "disconnects\n");
9406                break;
9407        default:
9408                shost_printk(KERN_WARNING, shost, "unknown warning: 0x%x\n",
9409                                warn_code);
9410                break;
9411        }
9412
9413        if (asc_dvc->err_code != 0)
9414                shost_printk(KERN_ERR, shost, "error 0x%x at init_state "
9415                        "0x%x\n", asc_dvc->err_code, asc_dvc->init_state);
9416
9417        return asc_dvc->err_code;
9418}
9419
9420/*
9421 * EEPROM Configuration.
9422 *
9423 * All drivers should use this structure to set the default EEPROM
9424 * configuration. The BIOS now uses this structure when it is built.
9425 * Additional structure information can be found in a_condor.h where
9426 * the structure is defined.
9427 *
9428 * The *_Field_IsChar structs are needed to correct for endianness.
9429 * These values are read from the board 16 bits at a time directly
9430 * into the structs. Because some fields are char, the values will be
9431 * in the wrong order. The *_Field_IsChar tells when to flip the
9432 * bytes. Data read and written to PCI memory is automatically swapped
9433 * on big-endian platforms so char fields read as words are actually being
9434 * unswapped on big-endian platforms.
9435 */
9436#ifdef CONFIG_PCI
9437static ADVEEP_3550_CONFIG Default_3550_EEPROM_Config = {
9438        ADV_EEPROM_BIOS_ENABLE, /* cfg_lsw */
9439        0x0000,                 /* cfg_msw */
9440        0xFFFF,                 /* disc_enable */
9441        0xFFFF,                 /* wdtr_able */
9442        0xFFFF,                 /* sdtr_able */
9443        0xFFFF,                 /* start_motor */
9444        0xFFFF,                 /* tagqng_able */
9445        0xFFFF,                 /* bios_scan */
9446        0,                      /* scam_tolerant */
9447        7,                      /* adapter_scsi_id */
9448        0,                      /* bios_boot_delay */
9449        3,                      /* scsi_reset_delay */
9450        0,                      /* bios_id_lun */
9451        0,                      /* termination */
9452        0,                      /* reserved1 */
9453        0xFFE7,                 /* bios_ctrl */
9454        0xFFFF,                 /* ultra_able */
9455        0,                      /* reserved2 */
9456        ASC_DEF_MAX_HOST_QNG,   /* max_host_qng */
9457        ASC_DEF_MAX_DVC_QNG,    /* max_dvc_qng */
9458        0,                      /* dvc_cntl */
9459        0,                      /* bug_fix */
9460        0,                      /* serial_number_word1 */
9461        0,                      /* serial_number_word2 */
9462        0,                      /* serial_number_word3 */
9463        0,                      /* check_sum */
9464        {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
9465        ,                       /* oem_name[16] */
9466        0,                      /* dvc_err_code */
9467        0,                      /* adv_err_code */
9468        0,                      /* adv_err_addr */
9469        0,                      /* saved_dvc_err_code */
9470        0,                      /* saved_adv_err_code */
9471        0,                      /* saved_adv_err_addr */
9472        0                       /* num_of_err */
9473};
9474
9475static ADVEEP_3550_CONFIG ADVEEP_3550_Config_Field_IsChar = {
9476        0,                      /* cfg_lsw */
9477        0,                      /* cfg_msw */
9478        0,                      /* -disc_enable */
9479        0,                      /* wdtr_able */
9480        0,                      /* sdtr_able */
9481        0,                      /* start_motor */
9482        0,                      /* tagqng_able */
9483        0,                      /* bios_scan */
9484        0,                      /* scam_tolerant */
9485        1,                      /* adapter_scsi_id */
9486        1,                      /* bios_boot_delay */
9487        1,                      /* scsi_reset_delay */
9488        1,                      /* bios_id_lun */
9489        1,                      /* termination */
9490        1,                      /* reserved1 */
9491        0,                      /* bios_ctrl */
9492        0,                      /* ultra_able */
9493        0,                      /* reserved2 */
9494        1,                      /* max_host_qng */
9495        1,                      /* max_dvc_qng */
9496        0,                      /* dvc_cntl */
9497        0,                      /* bug_fix */
9498        0,                      /* serial_number_word1 */
9499        0,                      /* serial_number_word2 */
9500        0,                      /* serial_number_word3 */
9501        0,                      /* check_sum */
9502        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
9503        ,                       /* oem_name[16] */
9504        0,                      /* dvc_err_code */
9505        0,                      /* adv_err_code */
9506        0,                      /* adv_err_addr */
9507        0,                      /* saved_dvc_err_code */
9508        0,                      /* saved_adv_err_code */
9509        0,                      /* saved_adv_err_addr */
9510        0                       /* num_of_err */
9511};
9512
9513static ADVEEP_38C0800_CONFIG Default_38C0800_EEPROM_Config = {
9514        ADV_EEPROM_BIOS_ENABLE, /* 00 cfg_lsw */
9515        0x0000,                 /* 01 cfg_msw */
9516        0xFFFF,                 /* 02 disc_enable */
9517        0xFFFF,                 /* 03 wdtr_able */
9518        0x4444,                 /* 04 sdtr_speed1 */
9519        0xFFFF,                 /* 05 start_motor */
9520        0xFFFF,                 /* 06 tagqng_able */
9521        0xFFFF,                 /* 07 bios_scan */
9522        0,                      /* 08 scam_tolerant */
9523        7,                      /* 09 adapter_scsi_id */
9524        0,                      /*    bios_boot_delay */
9525        3,                      /* 10 scsi_reset_delay */
9526        0,                      /*    bios_id_lun */
9527        0,                      /* 11 termination_se */
9528        0,                      /*    termination_lvd */
9529        0xFFE7,                 /* 12 bios_ctrl */
9530        0x4444,                 /* 13 sdtr_speed2 */
9531        0x4444,                 /* 14 sdtr_speed3 */
9532        ASC_DEF_MAX_HOST_QNG,   /* 15 max_host_qng */
9533        ASC_DEF_MAX_DVC_QNG,    /*    max_dvc_qng */
9534        0,                      /* 16 dvc_cntl */
9535        0x4444,                 /* 17 sdtr_speed4 */
9536        0,                      /* 18 serial_number_word1 */
9537        0,                      /* 19 serial_number_word2 */
9538        0,                      /* 20 serial_number_word3 */
9539        0,                      /* 21 check_sum */
9540        {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
9541        ,                       /* 22-29 oem_name[16] */
9542        0,                      /* 30 dvc_err_code */
9543        0,                      /* 31 adv_err_code */
9544        0,                      /* 32 adv_err_addr */
9545        0,                      /* 33 saved_dvc_err_code */
9546        0,                      /* 34 saved_adv_err_code */
9547        0,                      /* 35 saved_adv_err_addr */
9548        0,                      /* 36 reserved */
9549        0,                      /* 37 reserved */
9550        0,                      /* 38 reserved */
9551        0,                      /* 39 reserved */
9552        0,                      /* 40 reserved */
9553        0,                      /* 41 reserved */
9554        0,                      /* 42 reserved */
9555        0,                      /* 43 reserved */
9556        0,                      /* 44 reserved */
9557        0,                      /* 45 reserved */
9558        0,                      /* 46 reserved */
9559        0,                      /* 47 reserved */
9560        0,                      /* 48 reserved */
9561        0,                      /* 49 reserved */
9562        0,                      /* 50 reserved */
9563        0,                      /* 51 reserved */
9564        0,                      /* 52 reserved */
9565        0,                      /* 53 reserved */
9566        0,                      /* 54 reserved */
9567        0,                      /* 55 reserved */
9568        0,                      /* 56 cisptr_lsw */
9569        0,                      /* 57 cisprt_msw */
9570        PCI_VENDOR_ID_ASP,      /* 58 subsysvid */
9571        PCI_DEVICE_ID_38C0800_REV1,     /* 59 subsysid */
9572        0,                      /* 60 reserved */
9573        0,                      /* 61 reserved */
9574        0,                      /* 62 reserved */
9575        0                       /* 63 reserved */
9576};
9577
9578static ADVEEP_38C0800_CONFIG ADVEEP_38C0800_Config_Field_IsChar = {
9579        0,                      /* 00 cfg_lsw */
9580        0,                      /* 01 cfg_msw */
9581        0,                      /* 02 disc_enable */
9582        0,                      /* 03 wdtr_able */
9583        0,                      /* 04 sdtr_speed1 */
9584        0,                      /* 05 start_motor */
9585        0,                      /* 06 tagqng_able */
9586        0,                      /* 07 bios_scan */
9587        0,                      /* 08 scam_tolerant */
9588        1,                      /* 09 adapter_scsi_id */
9589        1,                      /*    bios_boot_delay */
9590        1,                      /* 10 scsi_reset_delay */
9591        1,                      /*    bios_id_lun */
9592        1,                      /* 11 termination_se */
9593        1,                      /*    termination_lvd */
9594        0,                      /* 12 bios_ctrl */
9595        0,                      /* 13 sdtr_speed2 */
9596        0,                      /* 14 sdtr_speed3 */
9597        1,                      /* 15 max_host_qng */
9598        1,                      /*    max_dvc_qng */
9599        0,                      /* 16 dvc_cntl */
9600        0,                      /* 17 sdtr_speed4 */
9601        0,                      /* 18 serial_number_word1 */
9602        0,                      /* 19 serial_number_word2 */
9603        0,                      /* 20 serial_number_word3 */
9604        0,                      /* 21 check_sum */
9605        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
9606        ,                       /* 22-29 oem_name[16] */
9607        0,                      /* 30 dvc_err_code */
9608        0,                      /* 31 adv_err_code */
9609        0,                      /* 32 adv_err_addr */
9610        0,                      /* 33 saved_dvc_err_code */
9611        0,                      /* 34 saved_adv_err_code */
9612        0,                      /* 35 saved_adv_err_addr */
9613        0,                      /* 36 reserved */
9614        0,                      /* 37 reserved */
9615        0,                      /* 38 reserved */
9616        0,                      /* 39 reserved */
9617        0,                      /* 40 reserved */
9618        0,                      /* 41 reserved */
9619        0,                      /* 42 reserved */
9620        0,                      /* 43 reserved */
9621        0,                      /* 44 reserved */
9622        0,                      /* 45 reserved */
9623        0,                      /* 46 reserved */
9624        0,                      /* 47 reserved */
9625        0,                      /* 48 reserved */
9626        0,                      /* 49 reserved */
9627        0,                      /* 50 reserved */
9628        0,                      /* 51 reserved */
9629        0,                      /* 52 reserved */
9630        0,                      /* 53 reserved */
9631        0,                      /* 54 reserved */
9632        0,                      /* 55 reserved */
9633        0,                      /* 56 cisptr_lsw */
9634        0,                      /* 57 cisprt_msw */
9635        0,                      /* 58 subsysvid */
9636        0,                      /* 59 subsysid */
9637        0,                      /* 60 reserved */
9638        0,                      /* 61 reserved */
9639        0,                      /* 62 reserved */
9640        0                       /* 63 reserved */
9641};
9642
9643static ADVEEP_38C1600_CONFIG Default_38C1600_EEPROM_Config = {
9644        ADV_EEPROM_BIOS_ENABLE, /* 00 cfg_lsw */
9645        0x0000,                 /* 01 cfg_msw */
9646        0xFFFF,                 /* 02 disc_enable */
9647        0xFFFF,                 /* 03 wdtr_able */
9648        0x5555,                 /* 04 sdtr_speed1 */
9649        0xFFFF,                 /* 05 start_motor */
9650        0xFFFF,                 /* 06 tagqng_able */
9651        0xFFFF,                 /* 07 bios_scan */
9652        0,                      /* 08 scam_tolerant */
9653        7,                      /* 09 adapter_scsi_id */
9654        0,                      /*    bios_boot_delay */
9655        3,                      /* 10 scsi_reset_delay */
9656        0,                      /*    bios_id_lun */
9657        0,                      /* 11 termination_se */
9658        0,                      /*    termination_lvd */
9659        0xFFE7,                 /* 12 bios_ctrl */
9660        0x5555,                 /* 13 sdtr_speed2 */
9661        0x5555,                 /* 14 sdtr_speed3 */
9662        ASC_DEF_MAX_HOST_QNG,   /* 15 max_host_qng */
9663        ASC_DEF_MAX_DVC_QNG,    /*    max_dvc_qng */
9664        0,                      /* 16 dvc_cntl */
9665        0x5555,                 /* 17 sdtr_speed4 */
9666        0,                      /* 18 serial_number_word1 */
9667        0,                      /* 19 serial_number_word2 */
9668        0,                      /* 20 serial_number_word3 */
9669        0,                      /* 21 check_sum */
9670        {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
9671        ,                       /* 22-29 oem_name[16] */
9672        0,                      /* 30 dvc_err_code */
9673        0,                      /* 31 adv_err_code */
9674        0,                      /* 32 adv_err_addr */
9675        0,                      /* 33 saved_dvc_err_code */
9676        0,                      /* 34 saved_adv_err_code */
9677        0,                      /* 35 saved_adv_err_addr */
9678        0,                      /* 36 reserved */
9679        0,                      /* 37 reserved */
9680        0,                      /* 38 reserved */
9681        0,                      /* 39 reserved */
9682        0,                      /* 40 reserved */
9683        0,                      /* 41 reserved */
9684        0,                      /* 42 reserved */
9685        0,                      /* 43 reserved */
9686        0,                      /* 44 reserved */
9687        0,                      /* 45 reserved */
9688        0,                      /* 46 reserved */
9689        0,                      /* 47 reserved */
9690        0,                      /* 48 reserved */
9691        0,                      /* 49 reserved */
9692        0,                      /* 50 reserved */
9693        0,                      /* 51 reserved */
9694        0,                      /* 52 reserved */
9695        0,                      /* 53 reserved */
9696        0,                      /* 54 reserved */
9697        0,                      /* 55 reserved */
9698        0,                      /* 56 cisptr_lsw */
9699        0,                      /* 57 cisprt_msw */
9700        PCI_VENDOR_ID_ASP,      /* 58 subsysvid */
9701        PCI_DEVICE_ID_38C1600_REV1,     /* 59 subsysid */
9702        0,                      /* 60 reserved */
9703        0,                      /* 61 reserved */
9704        0,                      /* 62 reserved */
9705        0                       /* 63 reserved */
9706};
9707
9708static ADVEEP_38C1600_CONFIG ADVEEP_38C1600_Config_Field_IsChar = {
9709        0,                      /* 00 cfg_lsw */
9710        0,                      /* 01 cfg_msw */
9711        0,                      /* 02 disc_enable */
9712        0,                      /* 03 wdtr_able */
9713        0,                      /* 04 sdtr_speed1 */
9714        0,                      /* 05 start_motor */
9715        0,                      /* 06 tagqng_able */
9716        0,                      /* 07 bios_scan */
9717        0,                      /* 08 scam_tolerant */
9718        1,                      /* 09 adapter_scsi_id */
9719        1,                      /*    bios_boot_delay */
9720        1,                      /* 10 scsi_reset_delay */
9721        1,                      /*    bios_id_lun */
9722        1,                      /* 11 termination_se */
9723        1,                      /*    termination_lvd */
9724        0,                      /* 12 bios_ctrl */
9725        0,                      /* 13 sdtr_speed2 */
9726        0,                      /* 14 sdtr_speed3 */
9727        1,                      /* 15 max_host_qng */
9728        1,                      /*    max_dvc_qng */
9729        0,                      /* 16 dvc_cntl */
9730        0,                      /* 17 sdtr_speed4 */
9731        0,                      /* 18 serial_number_word1 */
9732        0,                      /* 19 serial_number_word2 */
9733        0,                      /* 20 serial_number_word3 */
9734        0,                      /* 21 check_sum */
9735        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
9736        ,                       /* 22-29 oem_name[16] */
9737        0,                      /* 30 dvc_err_code */
9738        0,                      /* 31 adv_err_code */
9739        0,                      /* 32 adv_err_addr */
9740        0,                      /* 33 saved_dvc_err_code */
9741        0,                      /* 34 saved_adv_err_code */
9742        0,                      /* 35 saved_adv_err_addr */
9743        0,                      /* 36 reserved */
9744        0,                      /* 37 reserved */
9745        0,                      /* 38 reserved */
9746        0,                      /* 39 reserved */
9747        0,                      /* 40 reserved */
9748        0,                      /* 41 reserved */
9749        0,                      /* 42 reserved */
9750        0,                      /* 43 reserved */
9751        0,                      /* 44 reserved */
9752        0,                      /* 45 reserved */
9753        0,                      /* 46 reserved */
9754        0,                      /* 47 reserved */
9755        0,                      /* 48 reserved */
9756        0,                      /* 49 reserved */
9757        0,                      /* 50 reserved */
9758        0,                      /* 51 reserved */
9759        0,                      /* 52 reserved */
9760        0,                      /* 53 reserved */
9761        0,                      /* 54 reserved */
9762        0,                      /* 55 reserved */
9763        0,                      /* 56 cisptr_lsw */
9764        0,                      /* 57 cisprt_msw */
9765        0,                      /* 58 subsysvid */
9766        0,                      /* 59 subsysid */
9767        0,                      /* 60 reserved */
9768        0,                      /* 61 reserved */
9769        0,                      /* 62 reserved */
9770        0                       /* 63 reserved */
9771};
9772
9773/*
9774 * Wait for EEPROM command to complete
9775 */
9776static void AdvWaitEEPCmd(AdvPortAddr iop_base)
9777{
9778        int eep_delay_ms;
9779
9780        for (eep_delay_ms = 0; eep_delay_ms < ADV_EEP_DELAY_MS; eep_delay_ms++) {
9781                if (AdvReadWordRegister(iop_base, IOPW_EE_CMD) &
9782                    ASC_EEP_CMD_DONE) {
9783                        break;
9784                }
9785                mdelay(1);
9786        }
9787        if ((AdvReadWordRegister(iop_base, IOPW_EE_CMD) & ASC_EEP_CMD_DONE) ==
9788            0)
9789                BUG();
9790}
9791
9792/*
9793 * Read the EEPROM from specified location
9794 */
9795static ushort AdvReadEEPWord(AdvPortAddr iop_base, int eep_word_addr)
9796{
9797        AdvWriteWordRegister(iop_base, IOPW_EE_CMD,
9798                             ASC_EEP_CMD_READ | eep_word_addr);
9799        AdvWaitEEPCmd(iop_base);
9800        return AdvReadWordRegister(iop_base, IOPW_EE_DATA);
9801}
9802
9803/*
9804 * Write the EEPROM from 'cfg_buf'.
9805 */
9806static void AdvSet3550EEPConfig(AdvPortAddr iop_base,
9807                                ADVEEP_3550_CONFIG *cfg_buf)
9808{
9809        ushort *wbuf;
9810        ushort addr, chksum;
9811        ushort *charfields;
9812
9813        wbuf = (ushort *)cfg_buf;
9814        charfields = (ushort *)&ADVEEP_3550_Config_Field_IsChar;
9815        chksum = 0;
9816
9817        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE_ABLE);
9818        AdvWaitEEPCmd(iop_base);
9819
9820        /*
9821         * Write EEPROM from word 0 to word 20.
9822         */
9823        for (addr = ADV_EEP_DVC_CFG_BEGIN;
9824             addr < ADV_EEP_DVC_CFG_END; addr++, wbuf++) {
9825                ushort word;
9826
9827                if (*charfields++) {
9828                        word = cpu_to_le16(*wbuf);
9829                } else {
9830                        word = *wbuf;
9831                }
9832                chksum += *wbuf;        /* Checksum is calculated from word values. */
9833                AdvWriteWordRegister(iop_base, IOPW_EE_DATA, word);
9834                AdvWriteWordRegister(iop_base, IOPW_EE_CMD,
9835                                     ASC_EEP_CMD_WRITE | addr);
9836                AdvWaitEEPCmd(iop_base);
9837                mdelay(ADV_EEP_DELAY_MS);
9838        }
9839
9840        /*
9841         * Write EEPROM checksum at word 21.
9842         */
9843        AdvWriteWordRegister(iop_base, IOPW_EE_DATA, chksum);
9844        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE | addr);
9845        AdvWaitEEPCmd(iop_base);
9846        wbuf++;
9847        charfields++;
9848
9849        /*
9850         * Write EEPROM OEM name at words 22 to 29.
9851         */
9852        for (addr = ADV_EEP_DVC_CTL_BEGIN;
9853             addr < ADV_EEP_MAX_WORD_ADDR; addr++, wbuf++) {
9854                ushort word;
9855
9856                if (*charfields++) {
9857                        word = cpu_to_le16(*wbuf);
9858                } else {
9859                        word = *wbuf;
9860                }
9861                AdvWriteWordRegister(iop_base, IOPW_EE_DATA, word);
9862                AdvWriteWordRegister(iop_base, IOPW_EE_CMD,
9863                                     ASC_EEP_CMD_WRITE | addr);
9864                AdvWaitEEPCmd(iop_base);
9865        }
9866        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE_DISABLE);
9867        AdvWaitEEPCmd(iop_base);
9868}
9869
9870/*
9871 * Write the EEPROM from 'cfg_buf'.
9872 */
9873static void AdvSet38C0800EEPConfig(AdvPortAddr iop_base,
9874                                   ADVEEP_38C0800_CONFIG *cfg_buf)
9875{
9876        ushort *wbuf;
9877        ushort *charfields;
9878        ushort addr, chksum;
9879
9880        wbuf = (ushort *)cfg_buf;
9881        charfields = (ushort *)&ADVEEP_38C0800_Config_Field_IsChar;
9882        chksum = 0;
9883
9884        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE_ABLE);
9885        AdvWaitEEPCmd(iop_base);
9886
9887        /*
9888         * Write EEPROM from word 0 to word 20.
9889         */
9890        for (addr = ADV_EEP_DVC_CFG_BEGIN;
9891             addr < ADV_EEP_DVC_CFG_END; addr++, wbuf++) {
9892                ushort word;
9893
9894                if (*charfields++) {
9895                        word = cpu_to_le16(*wbuf);
9896                } else {
9897                        word = *wbuf;
9898                }
9899                chksum += *wbuf;        /* Checksum is calculated from word values. */
9900                AdvWriteWordRegister(iop_base, IOPW_EE_DATA, word);
9901                AdvWriteWordRegister(iop_base, IOPW_EE_CMD,
9902                                     ASC_EEP_CMD_WRITE | addr);
9903                AdvWaitEEPCmd(iop_base);
9904                mdelay(ADV_EEP_DELAY_MS);
9905        }
9906
9907        /*
9908         * Write EEPROM checksum at word 21.
9909         */
9910        AdvWriteWordRegister(iop_base, IOPW_EE_DATA, chksum);
9911        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE | addr);
9912        AdvWaitEEPCmd(iop_base);
9913        wbuf++;
9914        charfields++;
9915
9916        /*
9917         * Write EEPROM OEM name at words 22 to 29.
9918         */
9919        for (addr = ADV_EEP_DVC_CTL_BEGIN;
9920             addr < ADV_EEP_MAX_WORD_ADDR; addr++, wbuf++) {
9921                ushort word;
9922
9923                if (*charfields++) {
9924                        word = cpu_to_le16(*wbuf);
9925                } else {
9926                        word = *wbuf;
9927                }
9928                AdvWriteWordRegister(iop_base, IOPW_EE_DATA, word);
9929                AdvWriteWordRegister(iop_base, IOPW_EE_CMD,
9930                                     ASC_EEP_CMD_WRITE | addr);
9931                AdvWaitEEPCmd(iop_base);
9932        }
9933        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE_DISABLE);
9934        AdvWaitEEPCmd(iop_base);
9935}
9936
9937/*
9938 * Write the EEPROM from 'cfg_buf'.
9939 */
9940static void AdvSet38C1600EEPConfig(AdvPortAddr iop_base,
9941                                   ADVEEP_38C1600_CONFIG *cfg_buf)
9942{
9943        ushort *wbuf;
9944        ushort *charfields;
9945        ushort addr, chksum;
9946
9947        wbuf = (ushort *)cfg_buf;
9948        charfields = (ushort *)&ADVEEP_38C1600_Config_Field_IsChar;
9949        chksum = 0;
9950
9951        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE_ABLE);
9952        AdvWaitEEPCmd(iop_base);
9953
9954        /*
9955         * Write EEPROM from word 0 to word 20.
9956         */
9957        for (addr = ADV_EEP_DVC_CFG_BEGIN;
9958             addr < ADV_EEP_DVC_CFG_END; addr++, wbuf++) {
9959                ushort word;
9960
9961                if (*charfields++) {
9962                        word = cpu_to_le16(*wbuf);
9963                } else {
9964                        word = *wbuf;
9965                }
9966                chksum += *wbuf;        /* Checksum is calculated from word values. */
9967                AdvWriteWordRegister(iop_base, IOPW_EE_DATA, word);
9968                AdvWriteWordRegister(iop_base, IOPW_EE_CMD,
9969                                     ASC_EEP_CMD_WRITE | addr);
9970                AdvWaitEEPCmd(iop_base);
9971                mdelay(ADV_EEP_DELAY_MS);
9972        }
9973
9974        /*
9975         * Write EEPROM checksum at word 21.
9976         */
9977        AdvWriteWordRegister(iop_base, IOPW_EE_DATA, chksum);
9978        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE | addr);
9979        AdvWaitEEPCmd(iop_base);
9980        wbuf++;
9981        charfields++;
9982
9983        /*
9984         * Write EEPROM OEM name at words 22 to 29.
9985         */
9986        for (addr = ADV_EEP_DVC_CTL_BEGIN;
9987             addr < ADV_EEP_MAX_WORD_ADDR; addr++, wbuf++) {
9988                ushort word;
9989
9990                if (*charfields++) {
9991                        word = cpu_to_le16(*wbuf);
9992                } else {
9993                        word = *wbuf;
9994                }
9995                AdvWriteWordRegister(iop_base, IOPW_EE_DATA, word);
9996                AdvWriteWordRegister(iop_base, IOPW_EE_CMD,
9997                                     ASC_EEP_CMD_WRITE | addr);
9998                AdvWaitEEPCmd(iop_base);
9999        }
10000        AdvWriteWordRegister(iop_base, IOPW_EE_CMD, ASC_EEP_CMD_WRITE_DISABLE);

10001        AdvWaitEEPCmd(iop_base);
10002}
10003
10004/*
10005 * Read EEPROM configuration into the specified buffer.
10006 *
10007 * Return a checksum based on the EEPROM configuration read.
10008 */
10009static ushort AdvGet3550EEPConfig(AdvPortAddr iop_base,
10010                                  ADVEEP_3550_CONFIG *cfg_buf)
10011{
10012        ushort wval, chksum;
10013        ushort *wbuf;
10014        int eep_addr;
10015        ushort *charfields;
10016
10017        charfields = (ushort *)&ADVEEP_3550_Config_Field_IsChar;
10018        wbuf = (ushort *)cfg_buf;
10019        chksum = 0;
10020
10021        for (eep_addr = ADV_EEP_DVC_CFG_BEGIN;
10022             eep_addr < ADV_EEP_DVC_CFG_END; eep_addr++, wbuf++) {
10023                wval = AdvReadEEPWord(iop_base, eep_addr);
10024                chksum += wval; /* Checksum is calculated from word values. */
10025                if (*charfields++) {
10026                        *wbuf = le16_to_cpu(wval);
10027                } else {
10028                        *wbuf = wval;
10029                }
10030        }
10031        /* Read checksum word. */
10032        *wbuf = AdvReadEEPWord(iop_base, eep_addr);
10033        wbuf++;
10034        charfields++;
10035
10036        /* Read rest of EEPROM not covered by the checksum. */
10037        for (eep_addr = ADV_EEP_DVC_CTL_BEGIN;
10038             eep_addr < ADV_EEP_MAX_WORD_ADDR; eep_addr++, wbuf++) {
10039                *wbuf = AdvReadEEPWord(iop_base, eep_addr);
10040                if (*charfields++) {
10041                        *wbuf = le16_to_cpu(*wbuf);
10042                }
10043        }
10044        return chksum;
10045}
10046
10047/*
10048 * Read EEPROM configuration into the specified buffer.
10049 *
10050 * Return a checksum based on the EEPROM configuration read.
10051 */
10052static ushort AdvGet38C0800EEPConfig(AdvPortAddr iop_base,
10053                                     ADVEEP_38C0800_CONFIG *cfg_buf)
10054{
10055        ushort wval, chksum;
10056        ushort *wbuf;
10057        int eep_addr;
10058        ushort *charfields;
10059
10060        charfields = (ushort *)&ADVEEP_38C0800_Config_Field_IsChar;
10061        wbuf = (ushort *)cfg_buf;
10062        chksum = 0;
10063
10064        for (eep_addr = ADV_EEP_DVC_CFG_BEGIN;
10065             eep_addr < ADV_EEP_DVC_CFG_END; eep_addr++, wbuf++) {
10066                wval = AdvReadEEPWord(iop_base, eep_addr);
10067                chksum += wval; /* Checksum is calculated from word values. */
10068                if (*charfields++) {
10069                        *wbuf = le16_to_cpu(wval);
10070                } else {
10071                        *wbuf = wval;
10072                }
10073        }
10074        /* Read checksum word. */
10075        *wbuf = AdvReadEEPWord(iop_base, eep_addr);
10076        wbuf++;
10077        charfields++;
10078
10079        /* Read rest of EEPROM not covered by the checksum. */
10080        for (eep_addr = ADV_EEP_DVC_CTL_BEGIN;
10081             eep_addr < ADV_EEP_MAX_WORD_ADDR; eep_addr++, wbuf++) {
10082                *wbuf = AdvReadEEPWord(iop_base, eep_addr);
10083                if (*charfields++) {
10084                        *wbuf = le16_to_cpu(*wbuf);
10085                }
10086        }
10087        return chksum;
10088}
10089
10090/*
10091 * Read EEPROM configuration into the specified buffer.
10092 *
10093 * Return a checksum based on the EEPROM configuration read.
10094 */
10095static ushort AdvGet38C1600EEPConfig(AdvPortAddr iop_base,
10096                                     ADVEEP_38C1600_CONFIG *cfg_buf)
10097{
10098        ushort wval, chksum;
10099        ushort *wbuf;
10100        int eep_addr;
10101        ushort *charfields;
10102
10103        charfields = (ushort *)&ADVEEP_38C1600_Config_Field_IsChar;
10104        wbuf = (ushort *)cfg_buf;
10105        chksum = 0;
10106
10107        for (eep_addr = ADV_EEP_DVC_CFG_BEGIN;
10108             eep_addr < ADV_EEP_DVC_CFG_END; eep_addr++, wbuf++) {
10109                wval = AdvReadEEPWord(iop_base, eep_addr);
10110                chksum += wval; /* Checksum is calculated from word values. */
10111                if (*charfields++) {
10112                        *wbuf = le16_to_cpu(wval);
10113                } else {
10114                        *wbuf = wval;
10115                }
10116        }
10117        /* Read checksum word. */
10118        *wbuf = AdvReadEEPWord(iop_base, eep_addr);
10119        wbuf++;
10120        charfields++;
10121
10122        /* Read rest of EEPROM not covered by the checksum. */
10123        for (eep_addr = ADV_EEP_DVC_CTL_BEGIN;
10124             eep_addr < ADV_EEP_MAX_WORD_ADDR; eep_addr++, wbuf++) {
10125                *wbuf = AdvReadEEPWord(iop_base, eep_addr);
10126                if (*charfields++) {
10127                        *wbuf = le16_to_cpu(*wbuf);
10128                }
10129        }
10130        return chksum;
10131}
10132
10133/*
10134 * Read the board's EEPROM configuration. Set fields in ADV_DVC_VAR and
10135 * ADV_DVC_CFG based on the EEPROM settings. The chip is stopped while
10136 * all of this is done.
10137 *
10138 * On failure set the ADV_DVC_VAR field 'err_code' and return ADV_ERROR.
10139 *
10140 * For a non-fatal error return a warning code. If there are no warnings
10141 * then 0 is returned.
10142 *
10143 * Note: Chip is stopped on entry.
10144 */
10145static int AdvInitFrom3550EEP(ADV_DVC_VAR *asc_dvc)
10146{
10147        AdvPortAddr iop_base;
10148        ushort warn_code;
10149        ADVEEP_3550_CONFIG eep_config;
10150
10151        iop_base = asc_dvc->iop_base;
10152
10153        warn_code = 0;
10154
10155        /*
10156         * Read the board's EEPROM configuration.
10157         *
10158         * Set default values if a bad checksum is found.
10159         */
10160        if (AdvGet3550EEPConfig(iop_base, &eep_config) != eep_config.check_sum) {
10161                warn_code |= ASC_WARN_EEPROM_CHKSUM;
10162
10163                /*
10164                 * Set EEPROM default values.
10165                 */
10166                memcpy(&eep_config, &Default_3550_EEPROM_Config,
10167                        sizeof(ADVEEP_3550_CONFIG));
10168
10169                /*
10170                 * Assume the 6 byte board serial number that was read from
10171                 * EEPROM is correct even if the EEPROM checksum failed.
10172                 */
10173                eep_config.serial_number_word3 =
10174                    AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 1);
10175
10176                eep_config.serial_number_word2 =
10177                    AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 2);
10178
10179                eep_config.serial_number_word1 =
10180                    AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 3);
10181
10182                AdvSet3550EEPConfig(iop_base, &eep_config);
10183        }
10184        /*
10185         * Set ASC_DVC_VAR and ASC_DVC_CFG variables from the
10186         * EEPROM configuration that was read.
10187         *
10188         * This is the mapping of EEPROM fields to Adv Library fields.
10189         */
10190        asc_dvc->wdtr_able = eep_config.wdtr_able;
10191        asc_dvc->sdtr_able = eep_config.sdtr_able;
10192        asc_dvc->ultra_able = eep_config.ultra_able;
10193        asc_dvc->tagqng_able = eep_config.tagqng_able;
10194        asc_dvc->cfg->disc_enable = eep_config.disc_enable;
10195        asc_dvc->max_host_qng = eep_config.max_host_qng;
10196        asc_dvc->max_dvc_qng = eep_config.max_dvc_qng;
10197        asc_dvc->chip_scsi_id = (eep_config.adapter_scsi_id & ADV_MAX_TID);
10198        asc_dvc->start_motor = eep_config.start_motor;
10199        asc_dvc->scsi_reset_wait = eep_config.scsi_reset_delay;
10200        asc_dvc->bios_ctrl = eep_config.bios_ctrl;
10201        asc_dvc->no_scam = eep_config.scam_tolerant;
10202        asc_dvc->cfg->serial1 = eep_config.serial_number_word1;
10203        asc_dvc->cfg->serial2 = eep_config.serial_number_word2;
10204        asc_dvc->cfg->serial3 = eep_config.serial_number_word3;
10205
10206        /*
10207         * Set the host maximum queuing (max. 253, min. 16) and the per device
10208         * maximum queuing (max. 63, min. 4).
10209         */
10210        if (eep_config.max_host_qng > ASC_DEF_MAX_HOST_QNG) {
10211                eep_config.max_host_qng = ASC_DEF_MAX_HOST_QNG;
10212        } else if (eep_config.max_host_qng < ASC_DEF_MIN_HOST_QNG) {
10213                /* If the value is zero, assume it is uninitialized. */
10214                if (eep_config.max_host_qng == 0) {
10215                        eep_config.max_host_qng = ASC_DEF_MAX_HOST_QNG;
10216                } else {
10217                        eep_config.max_host_qng = ASC_DEF_MIN_HOST_QNG;
10218                }
10219        }
10220
10221        if (eep_config.max_dvc_qng > ASC_DEF_MAX_DVC_QNG) {
10222                eep_config.max_dvc_qng = ASC_DEF_MAX_DVC_QNG;
10223        } else if (eep_config.max_dvc_qng < ASC_DEF_MIN_DVC_QNG) {
10224                /* If the value is zero, assume it is uninitialized. */
10225                if (eep_config.max_dvc_qng == 0) {
10226                        eep_config.max_dvc_qng = ASC_DEF_MAX_DVC_QNG;
10227                } else {
10228                        eep_config.max_dvc_qng = ASC_DEF_MIN_DVC_QNG;
10229                }
10230        }
10231
10232        /*
10233         * If 'max_dvc_qng' is greater than 'max_host_qng', then
10234         * set 'max_dvc_qng' to 'max_host_qng'.
10235         */
10236        if (eep_config.max_dvc_qng > eep_config.max_host_qng) {
10237                eep_config.max_dvc_qng = eep_config.max_host_qng;
10238        }
10239
10240        /*
10241         * Set ADV_DVC_VAR 'max_host_qng' and ADV_DVC_VAR 'max_dvc_qng'
10242         * values based on possibly adjusted EEPROM values.
10243         */
10244        asc_dvc->max_host_qng = eep_config.max_host_qng;
10245        asc_dvc->max_dvc_qng = eep_config.max_dvc_qng;
10246
10247        /*
10248         * If the EEPROM 'termination' field is set to automatic (0), then set
10249         * the ADV_DVC_CFG 'termination' field to automatic also.
10250         *
10251         * If the termination is specified with a non-zero 'termination'
10252         * value check that a legal value is set and set the ADV_DVC_CFG
10253         * 'termination' field appropriately.
10254         */
10255        if (eep_config.termination == 0) {
10256                asc_dvc->cfg->termination = 0;  /* auto termination */
10257        } else {
10258                /* Enable manual control with low off / high off. */
10259                if (eep_config.termination == 1) {
10260                        asc_dvc->cfg->termination = TERM_CTL_SEL;
10261
10262                        /* Enable manual control with low off / high on. */
10263                } else if (eep_config.termination == 2) {
10264                        asc_dvc->cfg->termination = TERM_CTL_SEL | TERM_CTL_H;
10265
10266                        /* Enable manual control with low on / high on. */
10267                } else if (eep_config.termination == 3) {
10268                        asc_dvc->cfg->termination =
10269                            TERM_CTL_SEL | TERM_CTL_H | TERM_CTL_L;
10270                } else {
10271                        /*
10272                         * The EEPROM 'termination' field contains a bad value. Use
10273                         * automatic termination instead.
10274                         */
10275                        asc_dvc->cfg->termination = 0;
10276                        warn_code |= ASC_WARN_EEPROM_TERMINATION;
10277                }
10278        }
10279
10280        return warn_code;
10281}
10282
10283/*
10284 * Read the board's EEPROM configuration. Set fields in ADV_DVC_VAR and
10285 * ADV_DVC_CFG based on the EEPROM settings. The chip is stopped while
10286 * all of this is done.
10287 *
10288 * On failure set the ADV_DVC_VAR field 'err_code' and return ADV_ERROR.
10289 *
10290 * For a non-fatal error return a warning code. If there are no warnings
10291 * then 0 is returned.
10292 *
10293 * Note: Chip is stopped on entry.
10294 */
10295static int AdvInitFrom38C0800EEP(ADV_DVC_VAR *asc_dvc)
10296{
10297        AdvPortAddr iop_base;
10298        ushort warn_code;
10299        ADVEEP_38C0800_CONFIG eep_config;
10300        uchar tid, termination;
10301        ushort sdtr_speed = 0;
10302
10303        iop_base = asc_dvc->iop_base;
10304
10305        warn_code = 0;
10306
10307        /*
10308         * Read the board's EEPROM configuration.
10309         *
10310         * Set default values if a bad checksum is found.
10311         */
10312        if (AdvGet38C0800EEPConfig(iop_base, &eep_config) !=
10313            eep_config.check_sum) {
10314                warn_code |= ASC_WARN_EEPROM_CHKSUM;
10315
10316                /*
10317                 * Set EEPROM default values.
10318                 */
10319                memcpy(&eep_config, &Default_38C0800_EEPROM_Config,
10320                        sizeof(ADVEEP_38C0800_CONFIG));
10321
10322                /*
10323                 * Assume the 6 byte board serial number that was read from
10324                 * EEPROM is correct even if the EEPROM checksum failed.
10325                 */
10326                eep_config.serial_number_word3 =
10327                    AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 1);
10328
10329                eep_config.serial_number_word2 =
10330                    AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 2);
10331
10332                eep_config.serial_number_word1 =
10333                    AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 3);
10334
10335                AdvSet38C0800EEPConfig(iop_base, &eep_config);
10336        }
10337        /*
10338         * Set ADV_DVC_VAR and ADV_DVC_CFG variables from the
10339         * EEPROM configuration that was read.
10340         *
10341         * This is the mapping of EEPROM fields to Adv Library fields.
10342         */
10343        asc_dvc->wdtr_able = eep_config.wdtr_able;
10344        asc_dvc->sdtr_speed1 = eep_config.sdtr_speed1;
10345        asc_dvc->sdtr_speed2 = eep_config.sdtr_speed2;
10346        asc_dvc->sdtr_speed3 = eep_config.sdtr_speed3;
10347        asc_dvc->sdtr_speed4 = eep_config.sdtr_speed4;
10348        asc_dvc->tagqng_able = eep_config.tagqng_able;
10349        asc_dvc->cfg->disc_enable = eep_config.disc_enable;
10350        asc_dvc->max_host_qng = eep_config.max_host_qng;
10351        asc_dvc->max_dvc_qng = eep_config.max_dvc_qng;
10352        asc_dvc->chip_scsi_id = (eep_config.adapter_scsi_id & ADV_MAX_TID);
10353        asc_dvc->start_motor = eep_config.start_motor;
10354        asc_dvc->scsi_reset_wait = eep_config.scsi_reset_delay;
10355        asc_dvc->bios_ctrl = eep_config.bios_ctrl;
10356        asc_dvc->no_scam = eep_config.scam_tolerant;
10357        asc_dvc->cfg->serial1 = eep_config.serial_number_word1;
10358        asc_dvc->cfg->serial2 = eep_config.serial_number_word2;
10359        asc_dvc->cfg->serial3 = eep_config.serial_number_word3;
10360
10361        /*
10362         * For every Target ID if any of its 'sdtr_speed[1234]' bits
10363         * are set, then set an 'sdtr_able' bit for it.
10364         */
10365        asc_dvc->sdtr_able = 0;
10366        for (tid = 0; tid <= ADV_MAX_TID; tid++) {
10367                if (tid == 0) {
10368                        sdtr_speed = asc_dvc->sdtr_speed1;
10369                } else if (tid == 4) {
10370                        sdtr_speed = asc_dvc->sdtr_speed2;
10371                } else if (tid == 8) {
10372                        sdtr_speed = asc_dvc->sdtr_speed3;
10373                } else if (tid == 12) {
10374                        sdtr_speed = asc_dvc->sdtr_speed4;
10375                }
10376                if (sdtr_speed & ADV_MAX_TID) {
10377                        asc_dvc->sdtr_able |= (1 << tid);
10378                }
10379                sdtr_speed >>= 4;
10380        }
10381
10382        /*
10383         * Set the host maximum queuing (max. 253, min. 16) and the per device
10384         * maximum queuing (max. 63, min. 4).
10385         */
10386        if (eep_config.max_host_qng > ASC_DEF_MAX_HOST_QNG) {
10387                eep_config.max_host_qng = ASC_DEF_MAX_HOST_QNG;
10388        } else if (eep_config.max_host_qng < ASC_DEF_MIN_HOST_QNG) {
10389                /* If the value is zero, assume it is uninitialized. */
10390                if (eep_config.max_host_qng == 0) {
10391                        eep_config.max_host_qng = ASC_DEF_MAX_HOST_QNG;
10392                } else {
10393                        eep_config.max_host_qng = ASC_DEF_MIN_HOST_QNG;
10394                }
10395        }
10396
10397        if (eep_config.max_dvc_qng > ASC_DEF_MAX_DVC_QNG) {
10398                eep_config.max_dvc_qng = ASC_DEF_MAX_DVC_QNG;
10399        } else if (eep_config.max_dvc_qng < ASC_DEF_MIN_DVC_QNG) {
10400                /* If the value is zero, assume it is uninitialized. */
10401                if (eep_config.max_dvc_qng == 0) {
10402                        eep_config.max_dvc_qng = ASC_DEF_MAX_DVC_QNG;
10403                } else {
10404                        eep_config.max_dvc_qng = ASC_DEF_MIN_DVC_QNG;
10405                }
10406        }
10407
10408        /*
10409         * If 'max_dvc_qng' is greater than 'max_host_qng', then
10410         * set 'max_dvc_qng' to 'max_host_qng'.
10411         */
10412        if (eep_config.max_dvc_qng > eep_config.max_host_qng) {
10413                eep_config.max_dvc_qng = eep_config.max_host_qng;
10414        }
10415
10416        /*
10417         * Set ADV_DVC_VAR 'max_host_qng' and ADV_DVC_VAR 'max_dvc_qng'
10418         * values based on possibly adjusted EEPROM values.
10419         */
10420        asc_dvc->max_host_qng = eep_config.max_host_qng;
10421        asc_dvc->max_dvc_qng = eep_config.max_dvc_qng;
10422
10423        /*
10424         * If the EEPROM 'termination' field is set to automatic (0), then set
10425         * the ADV_DVC_CFG 'termination' field to automatic also.
10426         *
10427         * If the termination is specified with a non-zero 'termination'
10428         * value check that a legal value is set and set the ADV_DVC_CFG
10429         * 'termination' field appropriately.
10430         */
10431        if (eep_config.termination_se == 0) {
10432                termination = 0;        /* auto termination for SE */
10433        } else {
10434                /* Enable manual control with low off / high off. */
10435                if (eep_config.termination_se == 1) {
10436                        termination = 0;
10437
10438                        /* Enable manual control with low off / high on. */
10439                } else if (eep_config.termination_se == 2) {
10440                        termination = TERM_SE_HI;
10441
10442                        /* Enable manual control with low on / high on. */
10443                } else if (eep_config.termination_se == 3) {
10444                        termination = TERM_SE;
10445                } else {
10446                        /*
10447                         * The EEPROM 'termination_se' field contains a bad value.
10448                         * Use automatic termination instead.
10449                         */
10450                        termination = 0;
10451                        warn_code |= ASC_WARN_EEPROM_TERMINATION;
10452                }
10453        }
10454
10455        if (eep_config.termination_lvd == 0) {
10456                asc_dvc->cfg->termination = termination;        /* auto termination for LVD */
10457        } else {
10458                /* Enable manual control with low off / high off. */
10459                if (eep_config.termination_lvd == 1) {
10460                        asc_dvc->cfg->termination = termination;
10461
10462                        /* Enable manual control with low off / high on. */
10463                } else if (eep_config.termination_lvd == 2) {
10464                        asc_dvc->cfg->termination = termination | TERM_LVD_HI;
10465
10466                        /* Enable manual control with low on / high on. */
10467                } else if (eep_config.termination_lvd == 3) {
10468                        asc_dvc->cfg->termination = termination | TERM_LVD;
10469                } else {
10470                        /*
10471                         * The EEPROM 'termination_lvd' field contains a bad value.
10472                         * Use automatic termination instead.
10473                         */
10474                        asc_dvc->cfg->termination = termination;
10475                        warn_code |= ASC_WARN_EEPROM_TERMINATION;
10476                }
10477        }
10478
10479        return warn_code;
10480}
10481
10482/*
10483 * Read the board's EEPROM configuration. Set fields in ASC_DVC_VAR and
10484 * ASC_DVC_CFG based on the EEPROM settings. The chip is stopped while
10485 * all of this is done.
10486 *
10487 * On failure set the ASC_DVC_VAR field 'err_code' and return ADV_ERROR.
10488 *
10489 * For a non-fatal error return a warning code. If there are no warnings
10490 * then 0 is returned.
10491 *
10492 * Note: Chip is stopped on entry.
10493 */
10494static int AdvInitFrom38C1600EEP(ADV_DVC_VAR *asc_dvc)
10495{
10496        AdvPortAddr iop_base;
10497        ushort warn_code;
10498        ADVEEP_38C1600_CONFIG eep_config;
10499        uchar tid, termination;
10500        ushort sdtr_speed = 0;
10501
10502        iop_base = asc_dvc->iop_base;
10503
10504        warn_code = 0;
10505
10506        /*
10507         * Read the board's EEPROM configuration.
10508         *
10509         * Set default values if a bad checksum is found.
10510         */
10511        if (AdvGet38C1600EEPConfig(iop_base, &eep_config) !=
10512            eep_config.check_sum) {
10513                struct pci_dev *pdev = adv_dvc_to_pdev(asc_dvc);
10514                warn_code |= ASC_WARN_EEPROM_CHKSUM;
10515
10516                /*
10517                 * Set EEPROM default values.
10518                 */
10519                memcpy(&eep_config, &Default_38C1600_EEPROM_Config,
10520                        sizeof(ADVEEP_38C1600_CONFIG));
10521
10522                if (PCI_FUNC(pdev->devfn) != 0) {
10523                        u8 ints;
10524                        /*
10525                         * Disable Bit 14 (BIOS_ENABLE) to fix SPARC Ultra 60
10526                         * and old Mac system booting problem. The Expansion
10527                         * ROM must be disabled in Function 1 for these systems
10528                         */
10529                        eep_config.cfg_lsw &= ~ADV_EEPROM_BIOS_ENABLE;
10530                        /*
10531                         * Clear the INTAB (bit 11) if the GPIO 0 input
10532                         * indicates the Function 1 interrupt line is wired
10533                         * to INTB.
10534                         *
10535                         * Set/Clear Bit 11 (INTAB) from the GPIO bit 0 input:
10536                         *   1 - Function 1 interrupt line wired to INT A.
10537                         *   0 - Function 1 interrupt line wired to INT B.
10538                         *
10539                         * Note: Function 0 is always wired to INTA.
10540                         * Put all 5 GPIO bits in input mode and then read
10541                         * their input values.
10542                         */
10543                        AdvWriteByteRegister(iop_base, IOPB_GPIO_CNTL, 0);
10544                        ints = AdvReadByteRegister(iop_base, IOPB_GPIO_DATA);
10545                        if ((ints & 0x01) == 0)
10546                                eep_config.cfg_lsw &= ~ADV_EEPROM_INTAB;
10547                }
10548
10549                /*
10550                 * Assume the 6 byte board serial number that was read from
10551                 * EEPROM is correct even if the EEPROM checksum failed.
10552                 */
10553                eep_config.serial_number_word3 =
10554                        AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 1);
10555                eep_config.serial_number_word2 =
10556                        AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 2);
10557                eep_config.serial_number_word1 =
10558                        AdvReadEEPWord(iop_base, ADV_EEP_DVC_CFG_END - 3);
10559
10560                AdvSet38C1600EEPConfig(iop_base, &eep_config);
10561        }
10562
10563        /*
10564         * Set ASC_DVC_VAR and ASC_DVC_CFG variables from the
10565         * EEPROM configuration that was read.
10566         *
10567         * This is the mapping of EEPROM fields to Adv Library fields.
10568         */
10569        asc_dvc->wdtr_able = eep_config.wdtr_able;
10570        asc_dvc->sdtr_speed1 = eep_config.sdtr_speed1;
10571        asc_dvc->sdtr_speed2 = eep_config.sdtr_speed2;
10572        asc_dvc->sdtr_speed3 = eep_config.sdtr_speed3;
10573        asc_dvc->sdtr_speed4 = eep_config.sdtr_speed4;
10574        asc_dvc->ppr_able = 0;
10575        asc_dvc->tagqng_able = eep_config.tagqng_able;
10576        asc_dvc->cfg->disc_enable = eep_config.disc_enable;
10577        asc_dvc->max_host_qng = eep_config.max_host_qng;
10578        asc_dvc->max_dvc_qng = eep_config.max_dvc_qng;
10579        asc_dvc->chip_scsi_id = (eep_config.adapter_scsi_id & ASC_MAX_TID);
10580        asc_dvc->start_motor = eep_config.start_motor;
10581        asc_dvc->scsi_reset_wait = eep_config.scsi_reset_delay;
10582        asc_dvc->bios_ctrl = eep_config.bios_ctrl;
10583        asc_dvc->no_scam = eep_config.scam_tolerant;
10584
10585        /*
10586         * For every Target ID if any of its 'sdtr_speed[1234]' bits
10587         * are set, then set an 'sdtr_able' bit for it.
10588         */
10589        asc_dvc->sdtr_able = 0;
10590        for (tid = 0; tid <= ASC_MAX_TID; tid++) {
10591                if (tid == 0) {
10592                        sdtr_speed = asc_dvc->sdtr_speed1;
10593                } else if (tid == 4) {
10594                        sdtr_speed = asc_dvc->sdtr_speed2;
10595                } else if (tid == 8) {
10596                        sdtr_speed = asc_dvc->sdtr_speed3;
10597                } else if (tid == 12) {
10598                        sdtr_speed = asc_dvc->sdtr_speed4;
10599                }
10600                if (sdtr_speed & ASC_MAX_TID) {
10601                        asc_dvc->sdtr_able |= (1 << tid);
10602                }
10603                sdtr_speed >>= 4;
10604        }
10605
10606        /*
10607         * Set the host maximum queuing (max. 253, min. 16) and the per device
10608         * maximum queuing (max. 63, min. 4).
10609         */
10610        if (eep_config.max_host_qng > ASC_DEF_MAX_HOST_QNG) {
10611                eep_config.max_host_qng = ASC_DEF_MAX_HOST_QNG;
10612        } else if (eep_config.max_host_qng < ASC_DEF_MIN_HOST_QNG) {
10613                /* If the value is zero, assume it is uninitialized. */
10614                if (eep_config.max_host_qng == 0) {
10615                        eep_config.max_host_qng = ASC_DEF_MAX_HOST_QNG;
10616                } else {
10617                        eep_config.max_host_qng = ASC_DEF_MIN_HOST_QNG;
10618                }
10619        }
10620
10621        if (eep_config.max_dvc_qng > ASC_DEF_MAX_DVC_QNG) {
10622                eep_config.max_dvc_qng = ASC_DEF_MAX_DVC_QNG;
10623        } else if (eep_config.max_dvc_qng < ASC_DEF_MIN_DVC_QNG) {
10624                /* If the value is zero, assume it is uninitialized. */
10625                if (eep_config.max_dvc_qng == 0) {
10626                        eep_config.max_dvc_qng = ASC_DEF_MAX_DVC_QNG;
10627                } else {
10628                        eep_config.max_dvc_qng = ASC_DEF_MIN_DVC_QNG;
10629                }
10630        }
10631
10632        /*
10633         * If 'max_dvc_qng' is greater than 'max_host_qng', then
10634         * set 'max_dvc_qng' to 'max_host_qng'.
10635         */
10636        if (eep_config.max_dvc_qng > eep_config.max_host_qng) {
10637                eep_config.max_dvc_qng = eep_config.max_host_qng;
10638        }
10639
10640        /*
10641         * Set ASC_DVC_VAR 'max_host_qng' and ASC_DVC_VAR 'max_dvc_qng'
10642         * values based on possibly adjusted EEPROM values.
10643         */
10644        asc_dvc->max_host_qng = eep_config.max_host_qng;
10645        asc_dvc->max_dvc_qng = eep_config.max_dvc_qng;
10646
10647        /*
10648         * If the EEPROM 'termination' field is set to automatic (0), then set
10649         * the ASC_DVC_CFG 'termination' field to automatic also.
10650         *
10651         * If the termination is specified with a non-zero 'termination'
10652         * value check that a legal value is set and set the ASC_DVC_CFG
10653         * 'termination' field appropriately.
10654         */
10655        if (eep_config.termination_se == 0) {
10656                termination = 0;        /* auto termination for SE */
10657        } else {
10658                /* Enable manual control with low off / high off. */
10659                if (eep_config.termination_se == 1) {
10660                        termination = 0;
10661
10662                        /* Enable manual control with low off / high on. */
10663                } else if (eep_config.termination_se == 2) {
10664                        termination = TERM_SE_HI;
10665
10666                        /* Enable manual control with low on / high on. */
10667                } else if (eep_config.termination_se == 3) {
10668                        termination = TERM_SE;
10669                } else {
10670                        /*
10671                         * The EEPROM 'termination_se' field contains a bad value.
10672                         * Use automatic termination instead.
10673                         */
10674                        termination = 0;
10675                        warn_code |= ASC_WARN_EEPROM_TERMINATION;
10676                }
10677        }
10678
10679        if (eep_config.termination_lvd == 0) {
10680                asc_dvc->cfg->termination = termination;        /* auto termination for LVD */
10681        } else {
10682                /* Enable manual control with low off / high off. */
10683                if (eep_config.termination_lvd == 1) {
10684                        asc_dvc->cfg->termination = termination;
10685
10686                        /* Enable manual control with low off / high on. */
10687                } else if (eep_config.termination_lvd == 2) {
10688                        asc_dvc->cfg->termination = termination | TERM_LVD_HI;
10689
10690                        /* Enable manual control with low on / high on. */
10691                } else if (eep_config.termination_lvd == 3) {
10692                        asc_dvc->cfg->termination = termination | TERM_LVD;
10693                } else {
10694                        /*
10695                         * The EEPROM 'termination_lvd' field contains a bad value.
10696                         * Use automatic termination instead.
10697                         */
10698                        asc_dvc->cfg->termination = termination;
10699                        warn_code |= ASC_WARN_EEPROM_TERMINATION;
10700                }
10701        }
10702
10703        return warn_code;
10704}
10705
10706/*
10707 * Initialize the ADV_DVC_VAR structure.
10708 *
10709 * On failure set the ADV_DVC_VAR field 'err_code' and return ADV_ERROR.
10710 *
10711 * For a non-fatal error return a warning code. If there are no warnings
10712 * then 0 is returned.
10713 */
10714static int AdvInitGetConfig(struct pci_dev *pdev, struct Scsi_Host *shost)
10715{
10716        struct asc_board *board = shost_priv(shost);
10717        ADV_DVC_VAR *asc_dvc = &board->dvc_var.adv_dvc_var;
10718        unsigned short warn_code = 0;
10719        AdvPortAddr iop_base = asc_dvc->iop_base;
10720        u16 cmd;
10721        int status;
10722
10723        asc_dvc->err_code = 0;
10724
10725        /*
10726         * Save the state of the PCI Configuration Command Register
10727         * "Parity Error Response Control" Bit. If the bit is clear (0),
10728         * in AdvInitAsc3550/38C0800Driver() tell the microcode to ignore
10729         * DMA parity errors.
10730         */
10731        asc_dvc->cfg->control_flag = 0;
10732        pci_read_config_word(pdev, PCI_COMMAND, &cmd);
10733        if ((cmd & PCI_COMMAND_PARITY) == 0)
10734                asc_dvc->cfg->control_flag |= CONTROL_FLAG_IGNORE_PERR;
10735
10736        asc_dvc->cfg->chip_version =
10737            AdvGetChipVersion(iop_base, asc_dvc->bus_type);
10738
10739        ASC_DBG(1, "iopb_chip_id_1: 0x%x 0x%x\n",
10740                 (ushort)AdvReadByteRegister(iop_base, IOPB_CHIP_ID_1),
10741                 (ushort)ADV_CHIP_ID_BYTE);
10742
10743        ASC_DBG(1, "iopw_chip_id_0: 0x%x 0x%x\n",
10744                 (ushort)AdvReadWordRegister(iop_base, IOPW_CHIP_ID_0),
10745                 (ushort)ADV_CHIP_ID_WORD);
10746
10747        /*
10748         * Reset the chip to start and allow register writes.
10749         */
10750        if (AdvFindSignature(iop_base) == 0) {
10751                asc_dvc->err_code = ASC_IERR_BAD_SIGNATURE;
10752                return ADV_ERROR;
10753        } else {
10754                /*
10755                 * The caller must set 'chip_type' to a valid setting.
10756                 */
10757                if (asc_dvc->chip_type != ADV_CHIP_ASC3550 &&
10758                    asc_dvc->chip_type != ADV_CHIP_ASC38C0800 &&
10759                    asc_dvc->chip_type != ADV_CHIP_ASC38C1600) {
10760                        asc_dvc->err_code |= ASC_IERR_BAD_CHIPTYPE;
10761                        return ADV_ERROR;
10762                }
10763
10764                /*
10765                 * Reset Chip.
10766                 */
10767                AdvWriteWordRegister(iop_base, IOPW_CTRL_REG,
10768                                     ADV_CTRL_REG_CMD_RESET);
10769                mdelay(100);
10770                AdvWriteWordRegister(iop_base, IOPW_CTRL_REG,
10771                                     ADV_CTRL_REG_CMD_WR_IO_REG);
10772
10773                if (asc_dvc->chip_type == ADV_CHIP_ASC38C1600) {
10774                        status = AdvInitFrom38C1600EEP(asc_dvc);
10775                } else if (asc_dvc->chip_type == ADV_CHIP_ASC38C0800) {
10776                        status = AdvInitFrom38C0800EEP(asc_dvc);
10777                } else {
10778                        status = AdvInitFrom3550EEP(asc_dvc);
10779                }
10780                warn_code |= status;
10781        }
10782
10783        if (warn_code != 0)
10784                shost_printk(KERN_WARNING, shost, "warning: 0x%x\n", warn_code);
10785
10786        if (asc_dvc->err_code)
10787                shost_printk(KERN_ERR, shost, "error code 0x%x\n",
10788                                asc_dvc->err_code);
10789
10790        return asc_dvc->err_code;
10791}
10792#endif
10793
10794static struct scsi_host_template advansys_template = {
10795        .proc_name = DRV_NAME,
10796#ifdef CONFIG_PROC_FS
10797        .show_info = advansys_show_info,
10798#endif
10799        .name = DRV_NAME,
10800        .info = advansys_info,
10801        .queuecommand = advansys_queuecommand,
10802        .eh_host_reset_handler = advansys_reset,
10803        .bios_param = advansys_biosparam,
10804        .slave_configure = advansys_slave_configure,
10805        /*
10806         * Because the driver may control an ISA adapter 'unchecked_isa_dma'
10807         * must be set. The flag will be cleared in advansys_board_found
10808         * for non-ISA adapters.
10809         */
10810        .unchecked_isa_dma = true,
10811        /*
10812         * All adapters controlled by this driver are capable of large
10813         * scatter-gather lists. According to the mid-level SCSI documentation
10814         * this obviates any performance gain provided by setting
10815         * 'use_clustering'. But empirically while CPU utilization is increased
10816         * by enabling clustering, I/O throughput increases as well.
10817         */
10818        .use_clustering = ENABLE_CLUSTERING,
10819};
10820
10821static int advansys_wide_init_chip(struct Scsi_Host *shost)
10822{
10823        struct asc_board *board = shost_priv(shost);
10824        struct adv_dvc_var *adv_dvc = &board->dvc_var.adv_dvc_var;
10825        size_t sgblk_pool_size;
10826        int warn_code, err_code;
10827
10828        /*
10829         * Allocate buffer carrier structures. The total size
10830         * is about 8 KB, so allocate all at once.
10831         */
10832        adv_dvc->carrier = dma_alloc_coherent(board->dev,
10833                ADV_CARRIER_BUFSIZE, &adv_dvc->carrier_addr, GFP_KERNEL);
10834        ASC_DBG(1, "carrier 0x%p\n", adv_dvc->carrier);
10835
10836        if (!adv_dvc->carrier)
10837                goto kmalloc_failed;
10838
10839        /*
10840         * Allocate up to 'max_host_qng' request structures for the Wide
10841         * board. The total size is about 16 KB, so allocate all at once.
10842         * If the allocation fails decrement and try again.
10843         */
10844        board->adv_reqp_size = adv_dvc->max_host_qng * sizeof(adv_req_t);
10845        if (board->adv_reqp_size & 0x1f) {
10846                ASC_DBG(1, "unaligned reqp %lu bytes\n", sizeof(adv_req_t));
10847                board->adv_reqp_size = ADV_32BALIGN(board->adv_reqp_size);
10848        }
10849        board->adv_reqp = dma_alloc_coherent(board->dev, board->adv_reqp_size,
10850                &board->adv_reqp_addr, GFP_KERNEL);
10851
10852        if (!board->adv_reqp)
10853                goto kmalloc_failed;
10854
10855        ASC_DBG(1, "reqp 0x%p, req_cnt %d, bytes %lu\n", board->adv_reqp,
10856                adv_dvc->max_host_qng, board->adv_reqp_size);
10857
10858        /*
10859         * Allocate up to ADV_TOT_SG_BLOCK request structures for
10860         * the Wide board. Each structure is about 136 bytes.
10861         */
10862        sgblk_pool_size = sizeof(adv_sgblk_t) * ADV_TOT_SG_BLOCK;
10863        board->adv_sgblk_pool = dma_pool_create("adv_sgblk", board->dev,
10864                                                sgblk_pool_size, 32, 0);
10865
10866        ASC_DBG(1, "sg_cnt %d * %lu = %lu bytes\n", ADV_TOT_SG_BLOCK,
10867                sizeof(adv_sgblk_t), sgblk_pool_size);
10868
10869        if (!board->adv_sgblk_pool)
10870                goto kmalloc_failed;
10871
10872        if (adv_dvc->chip_type == ADV_CHIP_ASC3550) {
10873                ASC_DBG(2, "AdvInitAsc3550Driver()\n");
10874                warn_code = AdvInitAsc3550Driver(adv_dvc);
10875        } else if (adv_dvc->chip_type == ADV_CHIP_ASC38C0800) {
10876                ASC_DBG(2, "AdvInitAsc38C0800Driver()\n");
10877                warn_code = AdvInitAsc38C0800Driver(adv_dvc);
10878        } else {
10879                ASC_DBG(2, "AdvInitAsc38C1600Driver()\n");
10880                warn_code = AdvInitAsc38C1600Driver(adv_dvc);
10881        }
10882        err_code = adv_dvc->err_code;
10883
10884        if (warn_code || err_code) {
10885                shost_printk(KERN_WARNING, shost, "error: warn 0x%x, error "
10886                        "0x%x\n", warn_code, err_code);
10887        }
10888
10889        goto exit;
10890
10891 kmalloc_failed:
10892        shost_printk(KERN_ERR, shost, "error: kmalloc() failed\n");
10893        err_code = ADV_ERROR;
10894 exit:
10895        return err_code;
10896}
10897
10898static void advansys_wide_free_mem(struct asc_board *board)
10899{
10900        struct adv_dvc_var *adv_dvc = &board->dvc_var.adv_dvc_var;
10901
10902        if (adv_dvc->carrier) {
10903                dma_free_coherent(board->dev, ADV_CARRIER_BUFSIZE,
10904                                  adv_dvc->carrier, adv_dvc->carrier_addr);
10905                adv_dvc->carrier = NULL;
10906        }
10907        if (board->adv_reqp) {
10908                dma_free_coherent(board->dev, board->adv_reqp_size,
10909                                  board->adv_reqp, board->adv_reqp_addr);
10910                board->adv_reqp = NULL;
10911        }
10912        if (board->adv_sgblk_pool) {
10913                dma_pool_destroy(board->adv_sgblk_pool);
10914                board->adv_sgblk_pool = NULL;
10915        }
10916}
10917
10918static int advansys_board_found(struct Scsi_Host *shost, unsigned int iop,
10919                                int bus_type)
10920{
10921        struct pci_dev *pdev;
10922        struct asc_board *boardp = shost_priv(shost);
10923        ASC_DVC_VAR *asc_dvc_varp = NULL;
10924        ADV_DVC_VAR *adv_dvc_varp = NULL;
10925        int share_irq, warn_code, ret;
10926
10927        pdev = (bus_type == ASC_IS_PCI) ? to_pci_dev(boardp->dev) : NULL;
10928
10929        if (ASC_NARROW_BOARD(boardp)) {
10930                ASC_DBG(1, "narrow board\n");
10931                asc_dvc_varp = &boardp->dvc_var.asc_dvc_var;
10932                asc_dvc_varp->bus_type = bus_type;
10933                asc_dvc_varp->drv_ptr = boardp;
10934                asc_dvc_varp->cfg = &boardp->dvc_cfg.asc_dvc_cfg;
10935                asc_dvc_varp->iop_base = iop;
10936        } else {
10937#ifdef CONFIG_PCI
10938                adv_dvc_varp = &boardp->dvc_var.adv_dvc_var;
10939                adv_dvc_varp->drv_ptr = boardp;
10940                adv_dvc_varp->cfg = &boardp->dvc_cfg.adv_dvc_cfg;
10941                if (pdev->device == PCI_DEVICE_ID_ASP_ABP940UW) {
10942                        ASC_DBG(1, "wide board ASC-3550\n");
10943                        adv_dvc_varp->chip_type = ADV_CHIP_ASC3550;
10944                } else if (pdev->device == PCI_DEVICE_ID_38C0800_REV1) {
10945                        ASC_DBG(1, "wide board ASC-38C0800\n");
10946                        adv_dvc_varp->chip_type = ADV_CHIP_ASC38C0800;
10947                } else {
10948                        ASC_DBG(1, "wide board ASC-38C1600\n");
10949                        adv_dvc_varp->chip_type = ADV_CHIP_ASC38C1600;
10950                }
10951
10952                boardp->asc_n_io_port = pci_resource_len(pdev, 1);
10953                boardp->ioremap_addr = pci_ioremap_bar(pdev, 1);
10954                if (!boardp->ioremap_addr) {
10955                        shost_printk(KERN_ERR, shost, "ioremap(%lx, %d) "
10956                                        "returned NULL\n",
10957                                        (long)pci_resource_start(pdev, 1),
10958                                        boardp->asc_n_io_port);
10959                        ret = -ENODEV;
10960                        goto err_shost;
10961                }
10962                adv_dvc_varp->iop_base = (AdvPortAddr)boardp->ioremap_addr;
10963                ASC_DBG(1, "iop_base: 0x%p\n", adv_dvc_varp->iop_base);
10964
10965                /*
10966                 * Even though it isn't used to access wide boards, other
10967                 * than for the debug line below, save I/O Port address so
10968                 * that it can be reported.
10969                 */
10970                boardp->ioport = iop;
10971
10972                ASC_DBG(1, "iopb_chip_id_1 0x%x, iopw_chip_id_0 0x%x\n",
10973                                (ushort)inp(iop + 1), (ushort)inpw(iop));
10974#endif /* CONFIG_PCI */
10975        }
10976
10977        if (ASC_NARROW_BOARD(boardp)) {
10978                /*
10979                 * Set the board bus type and PCI IRQ before
10980                 * calling AscInitGetConfig().
10981                 */
10982                switch (asc_dvc_varp->bus_type) {
10983#ifdef CONFIG_ISA
10984                case ASC_IS_ISA:
10985                        shost->unchecked_isa_dma = true;
10986                        share_irq = 0;
10987                        break;
10988                case ASC_IS_VL:
10989                        shost->unchecked_isa_dma = false;
10990                        share_irq = 0;
10991                        break;
10992                case ASC_IS_EISA:
10993                        shost->unchecked_isa_dma = false;
10994                        share_irq = IRQF_SHARED;
10995                        break;
10996#endif /* CONFIG_ISA */
10997#ifdef CONFIG_PCI
10998                case ASC_IS_PCI:
10999                        shost->unchecked_isa_dma = false;
11000                        share_irq = IRQF_SHARED;

11001                        break;
11002#endif /* CONFIG_PCI */
11003                default:
11004                        shost_printk(KERN_ERR, shost, "unknown adapter type: "
11005                                        "%d\n", asc_dvc_varp->bus_type);
11006                        shost->unchecked_isa_dma = false;
11007                        share_irq = 0;
11008                        break;
11009                }
11010
11011                /*
11012                 * NOTE: AscInitGetConfig() may change the board's
11013                 * bus_type value. The bus_type value should no
11014                 * longer be used. If the bus_type field must be
11015                 * referenced only use the bit-wise AND operator "&".
11016                 */
11017                ASC_DBG(2, "AscInitGetConfig()\n");
11018                ret = AscInitGetConfig(shost) ? -ENODEV : 0;
11019        } else {
11020#ifdef CONFIG_PCI
11021                /*
11022                 * For Wide boards set PCI information before calling
11023                 * AdvInitGetConfig().
11024                 */
11025                shost->unchecked_isa_dma = false;
11026                share_irq = IRQF_SHARED;
11027                ASC_DBG(2, "AdvInitGetConfig()\n");
11028
11029                ret = AdvInitGetConfig(pdev, shost) ? -ENODEV : 0;
11030#else
11031                share_irq = 0;
11032                ret = -ENODEV;
11033#endif /* CONFIG_PCI */
11034        }
11035
11036        if (ret)
11037                goto err_unmap;
11038
11039        /*
11040         * Save the EEPROM configuration so that it can be displayed
11041         * from /proc/scsi/advansys/[0...].
11042         */
11043        if (ASC_NARROW_BOARD(boardp)) {
11044
11045                ASCEEP_CONFIG *ep;
11046
11047                /*
11048                 * Set the adapter's target id bit in the 'init_tidmask' field.
11049                 */
11050                boardp->init_tidmask |=
11051                    ADV_TID_TO_TIDMASK(asc_dvc_varp->cfg->chip_scsi_id);
11052
11053                /*
11054                 * Save EEPROM settings for the board.
11055                 */
11056                ep = &boardp->eep_config.asc_eep;
11057
11058                ep->init_sdtr = asc_dvc_varp->cfg->sdtr_enable;
11059                ep->disc_enable = asc_dvc_varp->cfg->disc_enable;
11060                ep->use_cmd_qng = asc_dvc_varp->cfg->cmd_qng_enabled;
11061                ASC_EEP_SET_DMA_SPD(ep, asc_dvc_varp->cfg->isa_dma_speed);
11062                ep->start_motor = asc_dvc_varp->start_motor;
11063                ep->cntl = asc_dvc_varp->dvc_cntl;
11064                ep->no_scam = asc_dvc_varp->no_scam;
11065                ep->max_total_qng = asc_dvc_varp->max_total_qng;
11066                ASC_EEP_SET_CHIP_ID(ep, asc_dvc_varp->cfg->chip_scsi_id);
11067                /* 'max_tag_qng' is set to the same value for every device. */
11068                ep->max_tag_qng = asc_dvc_varp->cfg->max_tag_qng[0];
11069                ep->adapter_info[0] = asc_dvc_varp->cfg->adapter_info[0];
11070                ep->adapter_info[1] = asc_dvc_varp->cfg->adapter_info[1];
11071                ep->adapter_info[2] = asc_dvc_varp->cfg->adapter_info[2];
11072                ep->adapter_info[3] = asc_dvc_varp->cfg->adapter_info[3];
11073                ep->adapter_info[4] = asc_dvc_varp->cfg->adapter_info[4];
11074                ep->adapter_info[5] = asc_dvc_varp->cfg->adapter_info[5];
11075
11076                /*
11077                 * Modify board configuration.
11078                 */
11079                ASC_DBG(2, "AscInitSetConfig()\n");
11080                ret = AscInitSetConfig(pdev, shost) ? -ENODEV : 0;
11081                if (ret)
11082                        goto err_unmap;
11083        } else {
11084                ADVEEP_3550_CONFIG *ep_3550;
11085                ADVEEP_38C0800_CONFIG *ep_38C0800;
11086                ADVEEP_38C1600_CONFIG *ep_38C1600;
11087
11088                /*
11089                 * Save Wide EEP Configuration Information.
11090                 */
11091                if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
11092                        ep_3550 = &boardp->eep_config.adv_3550_eep;
11093
11094                        ep_3550->adapter_scsi_id = adv_dvc_varp->chip_scsi_id;
11095                        ep_3550->max_host_qng = adv_dvc_varp->max_host_qng;
11096                        ep_3550->max_dvc_qng = adv_dvc_varp->max_dvc_qng;
11097                        ep_3550->termination = adv_dvc_varp->cfg->termination;
11098                        ep_3550->disc_enable = adv_dvc_varp->cfg->disc_enable;
11099                        ep_3550->bios_ctrl = adv_dvc_varp->bios_ctrl;
11100                        ep_3550->wdtr_able = adv_dvc_varp->wdtr_able;
11101                        ep_3550->sdtr_able = adv_dvc_varp->sdtr_able;
11102                        ep_3550->ultra_able = adv_dvc_varp->ultra_able;
11103                        ep_3550->tagqng_able = adv_dvc_varp->tagqng_able;
11104                        ep_3550->start_motor = adv_dvc_varp->start_motor;
11105                        ep_3550->scsi_reset_delay =
11106                            adv_dvc_varp->scsi_reset_wait;
11107                        ep_3550->serial_number_word1 =
11108                            adv_dvc_varp->cfg->serial1;
11109                        ep_3550->serial_number_word2 =
11110                            adv_dvc_varp->cfg->serial2;
11111                        ep_3550->serial_number_word3 =
11112                            adv_dvc_varp->cfg->serial3;
11113                } else if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800) {
11114                        ep_38C0800 = &boardp->eep_config.adv_38C0800_eep;
11115
11116                        ep_38C0800->adapter_scsi_id =
11117                            adv_dvc_varp->chip_scsi_id;
11118                        ep_38C0800->max_host_qng = adv_dvc_varp->max_host_qng;
11119                        ep_38C0800->max_dvc_qng = adv_dvc_varp->max_dvc_qng;
11120                        ep_38C0800->termination_lvd =
11121                            adv_dvc_varp->cfg->termination;
11122                        ep_38C0800->disc_enable =
11123                            adv_dvc_varp->cfg->disc_enable;
11124                        ep_38C0800->bios_ctrl = adv_dvc_varp->bios_ctrl;
11125                        ep_38C0800->wdtr_able = adv_dvc_varp->wdtr_able;
11126                        ep_38C0800->tagqng_able = adv_dvc_varp->tagqng_able;
11127                        ep_38C0800->sdtr_speed1 = adv_dvc_varp->sdtr_speed1;
11128                        ep_38C0800->sdtr_speed2 = adv_dvc_varp->sdtr_speed2;
11129                        ep_38C0800->sdtr_speed3 = adv_dvc_varp->sdtr_speed3;
11130                        ep_38C0800->sdtr_speed4 = adv_dvc_varp->sdtr_speed4;
11131                        ep_38C0800->tagqng_able = adv_dvc_varp->tagqng_able;
11132                        ep_38C0800->start_motor = adv_dvc_varp->start_motor;
11133                        ep_38C0800->scsi_reset_delay =
11134                            adv_dvc_varp->scsi_reset_wait;
11135                        ep_38C0800->serial_number_word1 =
11136                            adv_dvc_varp->cfg->serial1;
11137                        ep_38C0800->serial_number_word2 =
11138                            adv_dvc_varp->cfg->serial2;
11139                        ep_38C0800->serial_number_word3 =
11140                            adv_dvc_varp->cfg->serial3;
11141                } else {
11142                        ep_38C1600 = &boardp->eep_config.adv_38C1600_eep;
11143
11144                        ep_38C1600->adapter_scsi_id =
11145                            adv_dvc_varp->chip_scsi_id;
11146                        ep_38C1600->max_host_qng = adv_dvc_varp->max_host_qng;
11147                        ep_38C1600->max_dvc_qng = adv_dvc_varp->max_dvc_qng;
11148                        ep_38C1600->termination_lvd =
11149                            adv_dvc_varp->cfg->termination;
11150                        ep_38C1600->disc_enable =
11151                            adv_dvc_varp->cfg->disc_enable;
11152                        ep_38C1600->bios_ctrl = adv_dvc_varp->bios_ctrl;
11153                        ep_38C1600->wdtr_able = adv_dvc_varp->wdtr_able;
11154                        ep_38C1600->tagqng_able = adv_dvc_varp->tagqng_able;
11155                        ep_38C1600->sdtr_speed1 = adv_dvc_varp->sdtr_speed1;
11156                        ep_38C1600->sdtr_speed2 = adv_dvc_varp->sdtr_speed2;
11157                        ep_38C1600->sdtr_speed3 = adv_dvc_varp->sdtr_speed3;
11158                        ep_38C1600->sdtr_speed4 = adv_dvc_varp->sdtr_speed4;
11159                        ep_38C1600->tagqng_able = adv_dvc_varp->tagqng_able;
11160                        ep_38C1600->start_motor = adv_dvc_varp->start_motor;
11161                        ep_38C1600->scsi_reset_delay =
11162                            adv_dvc_varp->scsi_reset_wait;
11163                        ep_38C1600->serial_number_word1 =
11164                            adv_dvc_varp->cfg->serial1;
11165                        ep_38C1600->serial_number_word2 =
11166                            adv_dvc_varp->cfg->serial2;
11167                        ep_38C1600->serial_number_word3 =
11168                            adv_dvc_varp->cfg->serial3;
11169                }
11170
11171                /*
11172                 * Set the adapter's target id bit in the 'init_tidmask' field.
11173                 */
11174                boardp->init_tidmask |=
11175                    ADV_TID_TO_TIDMASK(adv_dvc_varp->chip_scsi_id);
11176        }
11177
11178        /*
11179         * Channels are numbered beginning with 0. For AdvanSys one host
11180         * structure supports one channel. Multi-channel boards have a
11181         * separate host structure for each channel.
11182         */
11183        shost->max_channel = 0;
11184        if (ASC_NARROW_BOARD(boardp)) {
11185                shost->max_id = ASC_MAX_TID + 1;
11186                shost->max_lun = ASC_MAX_LUN + 1;
11187                shost->max_cmd_len = ASC_MAX_CDB_LEN;
11188
11189                shost->io_port = asc_dvc_varp->iop_base;
11190                boardp->asc_n_io_port = ASC_IOADR_GAP;
11191                shost->this_id = asc_dvc_varp->cfg->chip_scsi_id;
11192
11193                /* Set maximum number of queues the adapter can handle. */
11194                shost->can_queue = asc_dvc_varp->max_total_qng;
11195        } else {
11196                shost->max_id = ADV_MAX_TID + 1;
11197                shost->max_lun = ADV_MAX_LUN + 1;
11198                shost->max_cmd_len = ADV_MAX_CDB_LEN;
11199
11200                /*
11201                 * Save the I/O Port address and length even though
11202                 * I/O ports are not used to access Wide boards.
11203                 * Instead the Wide boards are accessed with
11204                 * PCI Memory Mapped I/O.
11205                 */
11206                shost->io_port = iop;
11207
11208                shost->this_id = adv_dvc_varp->chip_scsi_id;
11209
11210                /* Set maximum number of queues the adapter can handle. */
11211                shost->can_queue = adv_dvc_varp->max_host_qng;
11212        }
11213
11214        /*
11215         * Set the maximum number of scatter-gather elements the
11216         * adapter can handle.
11217         */
11218        if (ASC_NARROW_BOARD(boardp)) {
11219                /*
11220                 * Allow two commands with 'sg_tablesize' scatter-gather
11221                 * elements to be executed simultaneously. This value is
11222                 * the theoretical hardware limit. It may be decreased
11223                 * below.
11224                 */
11225                shost->sg_tablesize =
11226                    (((asc_dvc_varp->max_total_qng - 2) / 2) *
11227                     ASC_SG_LIST_PER_Q) + 1;
11228        } else {
11229                shost->sg_tablesize = ADV_MAX_SG_LIST;
11230        }
11231
11232        /*
11233         * The value of 'sg_tablesize' can not exceed the SCSI
11234         * mid-level driver definition of SG_ALL. SG_ALL also
11235         * must not be exceeded, because it is used to define the
11236         * size of the scatter-gather table in 'struct asc_sg_head'.
11237         */
11238        if (shost->sg_tablesize > SG_ALL) {
11239                shost->sg_tablesize = SG_ALL;
11240        }
11241
11242        ASC_DBG(1, "sg_tablesize: %d\n", shost->sg_tablesize);
11243
11244        /* BIOS start address. */
11245        if (ASC_NARROW_BOARD(boardp)) {
11246                shost->base = AscGetChipBiosAddress(asc_dvc_varp->iop_base,
11247                                                    asc_dvc_varp->bus_type);
11248        } else {
11249                /*
11250                 * Fill-in BIOS board variables. The Wide BIOS saves
11251                 * information in LRAM that is used by the driver.
11252                 */
11253                AdvReadWordLram(adv_dvc_varp->iop_base,
11254                                BIOS_SIGNATURE, boardp->bios_signature);
11255                AdvReadWordLram(adv_dvc_varp->iop_base,
11256                                BIOS_VERSION, boardp->bios_version);
11257                AdvReadWordLram(adv_dvc_varp->iop_base,
11258                                BIOS_CODESEG, boardp->bios_codeseg);
11259                AdvReadWordLram(adv_dvc_varp->iop_base,
11260                                BIOS_CODELEN, boardp->bios_codelen);
11261
11262                ASC_DBG(1, "bios_signature 0x%x, bios_version 0x%x\n",
11263                         boardp->bios_signature, boardp->bios_version);
11264
11265                ASC_DBG(1, "bios_codeseg 0x%x, bios_codelen 0x%x\n",
11266                         boardp->bios_codeseg, boardp->bios_codelen);
11267
11268                /*
11269                 * If the BIOS saved a valid signature, then fill in
11270                 * the BIOS code segment base address.
11271                 */
11272                if (boardp->bios_signature == 0x55AA) {
11273                        /*
11274                         * Convert x86 realmode code segment to a linear
11275                         * address by shifting left 4.
11276                         */
11277                        shost->base = ((ulong)boardp->bios_codeseg << 4);
11278                } else {
11279                        shost->base = 0;
11280                }
11281        }
11282
11283        /*
11284         * Register Board Resources - I/O Port, DMA, IRQ
11285         */
11286
11287        /* Register DMA Channel for Narrow boards. */
11288        shost->dma_channel = NO_ISA_DMA;        /* Default to no ISA DMA. */
11289#ifdef CONFIG_ISA
11290        if (ASC_NARROW_BOARD(boardp)) {
11291                /* Register DMA channel for ISA bus. */
11292                if (asc_dvc_varp->bus_type & ASC_IS_ISA) {
11293                        shost->dma_channel = asc_dvc_varp->cfg->isa_dma_channel;
11294                        ret = request_dma(shost->dma_channel, DRV_NAME);
11295                        if (ret) {
11296                                shost_printk(KERN_ERR, shost, "request_dma() "
11297                                                "%d failed %d\n",
11298                                                shost->dma_channel, ret);
11299                                goto err_unmap;
11300                        }
11301                        AscEnableIsaDma(shost->dma_channel);
11302                }
11303        }
11304#endif /* CONFIG_ISA */
11305
11306        /* Register IRQ Number. */
11307        ASC_DBG(2, "request_irq(%d, %p)\n", boardp->irq, shost);
11308
11309        ret = request_irq(boardp->irq, advansys_interrupt, share_irq,
11310                          DRV_NAME, shost);
11311
11312        if (ret) {
11313                if (ret == -EBUSY) {
11314                        shost_printk(KERN_ERR, shost, "request_irq(): IRQ 0x%x "
11315                                        "already in use\n", boardp->irq);
11316                } else if (ret == -EINVAL) {
11317                        shost_printk(KERN_ERR, shost, "request_irq(): IRQ 0x%x "
11318                                        "not valid\n", boardp->irq);
11319                } else {
11320                        shost_printk(KERN_ERR, shost, "request_irq(): IRQ 0x%x "
11321                                        "failed with %d\n", boardp->irq, ret);
11322                }
11323                goto err_free_dma;
11324        }
11325
11326        /*
11327         * Initialize board RISC chip and enable interrupts.
11328         */
11329        if (ASC_NARROW_BOARD(boardp)) {
11330                ASC_DBG(2, "AscInitAsc1000Driver()\n");
11331
11332                asc_dvc_varp->overrun_buf = kzalloc(ASC_OVERRUN_BSIZE, GFP_KERNEL);
11333                if (!asc_dvc_varp->overrun_buf) {
11334                        ret = -ENOMEM;
11335                        goto err_free_irq;
11336                }
11337                warn_code = AscInitAsc1000Driver(asc_dvc_varp);
11338
11339                if (warn_code || asc_dvc_varp->err_code) {
11340                        shost_printk(KERN_ERR, shost, "error: init_state 0x%x, "
11341                                        "warn 0x%x, error 0x%x\n",
11342                                        asc_dvc_varp->init_state, warn_code,
11343                                        asc_dvc_varp->err_code);
11344                        if (!asc_dvc_varp->overrun_dma) {
11345                                ret = -ENODEV;
11346                                goto err_free_mem;
11347                        }
11348                }
11349        } else {
11350                if (advansys_wide_init_chip(shost)) {
11351                        ret = -ENODEV;
11352                        goto err_free_mem;
11353                }
11354        }
11355
11356        ASC_DBG_PRT_SCSI_HOST(2, shost);
11357
11358        ret = scsi_add_host(shost, boardp->dev);
11359        if (ret)
11360                goto err_free_mem;
11361
11362        scsi_scan_host(shost);
11363        return 0;
11364
11365 err_free_mem:
11366        if (ASC_NARROW_BOARD(boardp)) {
11367                if (asc_dvc_varp->overrun_dma)
11368                        dma_unmap_single(boardp->dev, asc_dvc_varp->overrun_dma,
11369                                         ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
11370                kfree(asc_dvc_varp->overrun_buf);
11371        } else
11372                advansys_wide_free_mem(boardp);
11373 err_free_irq:
11374        free_irq(boardp->irq, shost);
11375 err_free_dma:
11376#ifdef CONFIG_ISA
11377        if (shost->dma_channel != NO_ISA_DMA)
11378                free_dma(shost->dma_channel);
11379#endif
11380 err_unmap:
11381        if (boardp->ioremap_addr)
11382                iounmap(boardp->ioremap_addr);
11383#ifdef CONFIG_PCI
11384 err_shost:
11385#endif
11386        return ret;
11387}
11388
11389/*
11390 * advansys_release()
11391 *
11392 * Release resources allocated for a single AdvanSys adapter.
11393 */
11394static int advansys_release(struct Scsi_Host *shost)
11395{
11396        struct asc_board *board = shost_priv(shost);
11397        ASC_DBG(1, "begin\n");
11398        scsi_remove_host(shost);
11399        free_irq(board->irq, shost);
11400#ifdef CONFIG_ISA
11401        if (shost->dma_channel != NO_ISA_DMA) {
11402                ASC_DBG(1, "free_dma()\n");
11403                free_dma(shost->dma_channel);
11404        }
11405#endif
11406        if (ASC_NARROW_BOARD(board)) {
11407                dma_unmap_single(board->dev,
11408                                        board->dvc_var.asc_dvc_var.overrun_dma,
11409                                        ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
11410                kfree(board->dvc_var.asc_dvc_var.overrun_buf);
11411        } else {
11412                iounmap(board->ioremap_addr);
11413                advansys_wide_free_mem(board);
11414        }
11415        scsi_host_put(shost);
11416        ASC_DBG(1, "end\n");
11417        return 0;
11418}
11419
11420#define ASC_IOADR_TABLE_MAX_IX  11
11421
11422static PortAddr _asc_def_iop_base[ASC_IOADR_TABLE_MAX_IX] = {
11423        0x100, 0x0110, 0x120, 0x0130, 0x140, 0x0150, 0x0190,
11424        0x0210, 0x0230, 0x0250, 0x0330
11425};
11426
11427/*
11428 * The ISA IRQ number is found in bits 2 and 3 of the CfgLsw.  It decodes as:
11429 * 00: 10
11430 * 01: 11
11431 * 10: 12
11432 * 11: 15
11433 */
11434static unsigned int advansys_isa_irq_no(PortAddr iop_base)
11435{
11436        unsigned short cfg_lsw = AscGetChipCfgLsw(iop_base);
11437        unsigned int chip_irq = ((cfg_lsw >> 2) & 0x03) + 10;
11438        if (chip_irq == 13)
11439                chip_irq = 15;
11440        return chip_irq;
11441}
11442
11443static int advansys_isa_probe(struct device *dev, unsigned int id)
11444{
11445        int err = -ENODEV;
11446        PortAddr iop_base = _asc_def_iop_base[id];
11447        struct Scsi_Host *shost;
11448        struct asc_board *board;
11449
11450        if (!request_region(iop_base, ASC_IOADR_GAP, DRV_NAME)) {
11451                ASC_DBG(1, "I/O port 0x%x busy\n", iop_base);
11452                return -ENODEV;
11453        }
11454        ASC_DBG(1, "probing I/O port 0x%x\n", iop_base);
11455        if (!AscFindSignature(iop_base))
11456                goto release_region;
11457        if (!(AscGetChipVersion(iop_base, ASC_IS_ISA) & ASC_CHIP_VER_ISA_BIT))
11458                goto release_region;
11459
11460        err = -ENOMEM;
11461        shost = scsi_host_alloc(&advansys_template, sizeof(*board));
11462        if (!shost)
11463                goto release_region;
11464
11465        board = shost_priv(shost);
11466        board->irq = advansys_isa_irq_no(iop_base);
11467        board->dev = dev;
11468        board->shost = shost;
11469
11470        err = advansys_board_found(shost, iop_base, ASC_IS_ISA);
11471        if (err)
11472                goto free_host;
11473
11474        dev_set_drvdata(dev, shost);
11475        return 0;
11476
11477 free_host:
11478        scsi_host_put(shost);
11479 release_region:
11480        release_region(iop_base, ASC_IOADR_GAP);
11481        return err;
11482}
11483
11484static int advansys_isa_remove(struct device *dev, unsigned int id)
11485{
11486        int ioport = _asc_def_iop_base[id];
11487        advansys_release(dev_get_drvdata(dev));
11488        release_region(ioport, ASC_IOADR_GAP);
11489        return 0;
11490}
11491
11492static struct isa_driver advansys_isa_driver = {
11493        .probe          = advansys_isa_probe,
11494        .remove         = advansys_isa_remove,
11495        .driver = {
11496                .owner  = THIS_MODULE,
11497                .name   = DRV_NAME,
11498        },
11499};
11500
11501/*
11502 * The VLB IRQ number is found in bits 2 to 4 of the CfgLsw.  It decodes as:
11503 * 000: invalid
11504 * 001: 10
11505 * 010: 11
11506 * 011: 12
11507 * 100: invalid
11508 * 101: 14
11509 * 110: 15
11510 * 111: invalid
11511 */
11512static unsigned int advansys_vlb_irq_no(PortAddr iop_base)
11513{
11514        unsigned short cfg_lsw = AscGetChipCfgLsw(iop_base);
11515        unsigned int chip_irq = ((cfg_lsw >> 2) & 0x07) + 9;
11516        if ((chip_irq < 10) || (chip_irq == 13) || (chip_irq > 15))
11517                return 0;
11518        return chip_irq;
11519}
11520
11521static int advansys_vlb_probe(struct device *dev, unsigned int id)
11522{
11523        int err = -ENODEV;
11524        PortAddr iop_base = _asc_def_iop_base[id];
11525        struct Scsi_Host *shost;
11526        struct asc_board *board;
11527
11528        if (!request_region(iop_base, ASC_IOADR_GAP, DRV_NAME)) {
11529                ASC_DBG(1, "I/O port 0x%x busy\n", iop_base);
11530                return -ENODEV;
11531        }
11532        ASC_DBG(1, "probing I/O port 0x%x\n", iop_base);
11533        if (!AscFindSignature(iop_base))
11534                goto release_region;
11535        /*
11536         * I don't think this condition can actually happen, but the old
11537         * driver did it, and the chances of finding a VLB setup in 2007
11538         * to do testing with is slight to none.
11539         */
11540        if (AscGetChipVersion(iop_base, ASC_IS_VL) > ASC_CHIP_MAX_VER_VL)
11541                goto release_region;
11542
11543        err = -ENOMEM;
11544        shost = scsi_host_alloc(&advansys_template, sizeof(*board));
11545        if (!shost)
11546                goto release_region;
11547
11548        board = shost_priv(shost);
11549        board->irq = advansys_vlb_irq_no(iop_base);
11550        board->dev = dev;
11551        board->shost = shost;
11552
11553        err = advansys_board_found(shost, iop_base, ASC_IS_VL);
11554        if (err)
11555                goto free_host;
11556
11557        dev_set_drvdata(dev, shost);
11558        return 0;
11559
11560 free_host:
11561        scsi_host_put(shost);
11562 release_region:
11563        release_region(iop_base, ASC_IOADR_GAP);
11564        return -ENODEV;
11565}
11566
11567static struct isa_driver advansys_vlb_driver = {
11568        .probe          = advansys_vlb_probe,
11569        .remove         = advansys_isa_remove,
11570        .driver = {
11571                .owner  = THIS_MODULE,
11572                .name   = "advansys_vlb",
11573        },
11574};
11575
11576static struct eisa_device_id advansys_eisa_table[] = {
11577        { "ABP7401" },
11578        { "ABP7501" },
11579        { "" }
11580};
11581
11582MODULE_DEVICE_TABLE(eisa, advansys_eisa_table);
11583
11584/*
11585 * EISA is a little more tricky than PCI; each EISA device may have two
11586 * channels, and this driver is written to make each channel its own Scsi_Host
11587 */
11588struct eisa_scsi_data {
11589        struct Scsi_Host *host[2];
11590};
11591
11592/*
11593 * The EISA IRQ number is found in bits 8 to 10 of the CfgLsw.  It decodes as:
11594 * 000: 10
11595 * 001: 11
11596 * 010: 12
11597 * 011: invalid
11598 * 100: 14
11599 * 101: 15
11600 * 110: invalid
11601 * 111: invalid
11602 */
11603static unsigned int advansys_eisa_irq_no(struct eisa_device *edev)
11604{
11605        unsigned short cfg_lsw = inw(edev->base_addr + 0xc86);
11606        unsigned int chip_irq = ((cfg_lsw >> 8) & 0x07) + 10;
11607        if ((chip_irq == 13) || (chip_irq > 15))
11608                return 0;
11609        return chip_irq;
11610}
11611
11612static int advansys_eisa_probe(struct device *dev)
11613{
11614        int i, ioport, irq = 0;
11615        int err;
11616        struct eisa_device *edev = to_eisa_device(dev);
11617        struct eisa_scsi_data *data;
11618
11619        err = -ENOMEM;
11620        data = kzalloc(sizeof(*data), GFP_KERNEL);
11621        if (!data)
11622                goto fail;
11623        ioport = edev->base_addr + 0xc30;
11624
11625        err = -ENODEV;
11626        for (i = 0; i < 2; i++, ioport += 0x20) {
11627                struct asc_board *board;
11628                struct Scsi_Host *shost;
11629                if (!request_region(ioport, ASC_IOADR_GAP, DRV_NAME)) {
11630                        printk(KERN_WARNING "Region %x-%x busy\n", ioport,
11631                               ioport + ASC_IOADR_GAP - 1);
11632                        continue;
11633                }
11634                if (!AscFindSignature(ioport)) {
11635                        release_region(ioport, ASC_IOADR_GAP);
11636                        continue;
11637                }
11638
11639                /*
11640                 * I don't know why we need to do this for EISA chips, but
11641                 * not for any others.  It looks to be equivalent to
11642                 * AscGetChipCfgMsw, but I may have overlooked something,
11643                 * so I'm not converting it until I get an EISA board to
11644                 * test with.
11645                 */
11646                inw(ioport + 4);
11647
11648                if (!irq)
11649                        irq = advansys_eisa_irq_no(edev);
11650
11651                err = -ENOMEM;
11652                shost = scsi_host_alloc(&advansys_template, sizeof(*board));
11653                if (!shost)
11654                        goto release_region;
11655
11656                board = shost_priv(shost);
11657                board->irq = irq;
11658                board->dev = dev;
11659                board->shost = shost;
11660
11661                err = advansys_board_found(shost, ioport, ASC_IS_EISA);
11662                if (!err) {
11663                        data->host[i] = shost;
11664                        continue;
11665                }
11666
11667                scsi_host_put(shost);
11668 release_region:
11669                release_region(ioport, ASC_IOADR_GAP);
11670                break;
11671        }
11672
11673        if (err)
11674                goto free_data;
11675        dev_set_drvdata(dev, data);
11676        return 0;
11677
11678 free_data:
11679        kfree(data->host[0]);
11680        kfree(data->host[1]);
11681        kfree(data);
11682 fail:
11683        return err;
11684}
11685
11686static int advansys_eisa_remove(struct device *dev)
11687{
11688        int i;
11689        struct eisa_scsi_data *data = dev_get_drvdata(dev);
11690
11691        for (i = 0; i < 2; i++) {
11692                int ioport;
11693                struct Scsi_Host *shost = data->host[i];
11694                if (!shost)
11695                        continue;
11696                ioport = shost->io_port;
11697                advansys_release(shost);
11698                release_region(ioport, ASC_IOADR_GAP);
11699        }
11700
11701        kfree(data);
11702        return 0;
11703}
11704
11705static struct eisa_driver advansys_eisa_driver = {
11706        .id_table =             advansys_eisa_table,
11707        .driver = {
11708                .name =         DRV_NAME,
11709                .probe =        advansys_eisa_probe,
11710                .remove =       advansys_eisa_remove,
11711        }
11712};
11713
11714/* PCI Devices supported by this driver */
11715static struct pci_device_id advansys_pci_tbl[] = {
11716        {PCI_VENDOR_ID_ASP, PCI_DEVICE_ID_ASP_1200A,
11717         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
11718        {PCI_VENDOR_ID_ASP, PCI_DEVICE_ID_ASP_ABP940,
11719         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
11720        {PCI_VENDOR_ID_ASP, PCI_DEVICE_ID_ASP_ABP940U,
11721         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
11722        {PCI_VENDOR_ID_ASP, PCI_DEVICE_ID_ASP_ABP940UW,
11723         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
11724        {PCI_VENDOR_ID_ASP, PCI_DEVICE_ID_38C0800_REV1,
11725         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
11726        {PCI_VENDOR_ID_ASP, PCI_DEVICE_ID_38C1600_REV1,
11727         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
11728        {}
11729};
11730
11731MODULE_DEVICE_TABLE(pci, advansys_pci_tbl);
11732
11733static void advansys_set_latency(struct pci_dev *pdev)
11734{
11735        if ((pdev->device == PCI_DEVICE_ID_ASP_1200A) ||
11736            (pdev->device == PCI_DEVICE_ID_ASP_ABP940)) {
11737                pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0);
11738        } else {
11739                u8 latency;
11740                pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency);
11741                if (latency < 0x20)
11742                        pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x20);
11743        }
11744}
11745
11746static int advansys_pci_probe(struct pci_dev *pdev,
11747                              const struct pci_device_id *ent)
11748{
11749        int err, ioport;
11750        struct Scsi_Host *shost;
11751        struct asc_board *board;
11752
11753        err = pci_enable_device(pdev);
11754        if (err)
11755                goto fail;
11756        err = pci_request_regions(pdev, DRV_NAME);
11757        if (err)
11758                goto disable_device;
11759        pci_set_master(pdev);
11760        advansys_set_latency(pdev);
11761
11762        err = -ENODEV;
11763        if (pci_resource_len(pdev, 0) == 0)
11764                goto release_region;
11765
11766        ioport = pci_resource_start(pdev, 0);
11767
11768        err = -ENOMEM;
11769        shost = scsi_host_alloc(&advansys_template, sizeof(*board));
11770        if (!shost)
11771                goto release_region;
11772
11773        board = shost_priv(shost);
11774        board->irq = pdev->irq;
11775        board->dev = &pdev->dev;
11776        board->shost = shost;
11777
11778        if (pdev->device == PCI_DEVICE_ID_ASP_ABP940UW ||
11779            pdev->device == PCI_DEVICE_ID_38C0800_REV1 ||
11780            pdev->device == PCI_DEVICE_ID_38C1600_REV1) {
11781                board->flags |= ASC_IS_WIDE_BOARD;
11782        }
11783
11784        err = advansys_board_found(shost, ioport, ASC_IS_PCI);
11785        if (err)
11786                goto free_host;
11787
11788        pci_set_drvdata(pdev, shost);
11789        return 0;
11790
11791 free_host:
11792        scsi_host_put(shost);
11793 release_region:
11794        pci_release_regions(pdev);
11795 disable_device:
11796        pci_disable_device(pdev);
11797 fail:
11798        return err;
11799}
11800
11801static void advansys_pci_remove(struct pci_dev *pdev)
11802{
11803        advansys_release(pci_get_drvdata(pdev));
11804        pci_release_regions(pdev);
11805        pci_disable_device(pdev);
11806}
11807
11808static struct pci_driver advansys_pci_driver = {
11809        .name =         DRV_NAME,
11810        .id_table =     advansys_pci_tbl,
11811        .probe =        advansys_pci_probe,
11812        .remove =       advansys_pci_remove,
11813};
11814
11815static int __init advansys_init(void)
11816{
11817        int error;
11818
11819        error = isa_register_driver(&advansys_isa_driver,
11820                                    ASC_IOADR_TABLE_MAX_IX);
11821        if (error)
11822                goto fail;
11823
11824        error = isa_register_driver(&advansys_vlb_driver,
11825                                    ASC_IOADR_TABLE_MAX_IX);
11826        if (error)
11827                goto unregister_isa;
11828
11829        error = eisa_driver_register(&advansys_eisa_driver);
11830        if (error)
11831                goto unregister_vlb;
11832
11833        error = pci_register_driver(&advansys_pci_driver);
11834        if (error)
11835                goto unregister_eisa;
11836
11837        return 0;
11838
11839 unregister_eisa:
11840        eisa_driver_unregister(&advansys_eisa_driver);
11841 unregister_vlb:
11842        isa_unregister_driver(&advansys_vlb_driver);
11843 unregister_isa:
11844        isa_unregister_driver(&advansys_isa_driver);
11845 fail:
11846        return error;
11847}
11848
11849static void __exit advansys_exit(void)
11850{
11851        pci_unregister_driver(&advansys_pci_driver);
11852        eisa_driver_unregister(&advansys_eisa_driver);
11853        isa_unregister_driver(&advansys_vlb_driver);
11854        isa_unregister_driver(&advansys_isa_driver);
11855}
11856
11857module_init(advansys_init);
11858module_exit(advansys_exit);
11859
11860MODULE_LICENSE("GPL");
11861MODULE_FIRMWARE("advansys/mcode.bin");
11862MODULE_FIRMWARE("advansys/3550.bin");
11863MODULE_FIRMWARE("advansys/38C0800.bin");
11864MODULE_FIRMWARE("advansys/38C1600.bin");
11865