LXR linux/drivers/scsi/sun3

   1/*
   2 * Sun3 SCSI stuff by Erik Verbruggen (erik@bigmama.xtdnet.nl)
   3 *
   4 * Sun3 DMA additions by Sam Creasey (sammy@sammy.net)
   5 *
   6 * Adapted from mac_scsinew.h:
   7 */
   8/*
   9 * Cumana Generic NCR5380 driver defines
  10 *
  11 * Copyright 1993, Drew Eckhardt
  12 *      Visionary Computing
  13 *      (Unix and Linux consulting and custom programming)
  14 *      drew@colorado.edu
  15 *      +1 (303) 440-4894
  16 *
  17 * ALPHA RELEASE 1.
  18 *
  19 * For more information, please consult
  20 *
  21 * NCR 5380 Family
  22 * SCSI Protocol Controller
  23 * Databook
  24 *
  25 * NCR Microelectronics
  26 * 1635 Aeroplaza Drive
  27 * Colorado Springs, CO 80916
  28 * 1+ (719) 578-3400
  29 * 1+ (800) 334-5454
  30 */
  31
  32/*
  33 * $Log: cumana_NCR5380.h,v $
  34 */
  35
  36#ifndef SUN3_NCR5380_H
  37#define SUN3_NCR5380_H
  38
  39#define SUN3SCSI_PUBLIC_RELEASE 1
  40
  41/*
  42 * Int: level 2 autovector
  43 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
  44 */
  45#define IRQ_SUN3_SCSI 2
  46#define IOBASE_SUN3_SCSI 0x00140000
  47
  48#define IOBASE_SUN3_VMESCSI 0xff200000
  49
  50static int sun3scsi_abort(struct scsi_cmnd *);
  51static int sun3scsi_detect (struct scsi_host_template *);
  52static const char *sun3scsi_info (struct Scsi_Host *);
  53static int sun3scsi_bus_reset(struct scsi_cmnd *);
  54static int sun3scsi_queue_command(struct scsi_cmnd *,
  55                                  void (*done)(struct scsi_cmnd *));
  56static int sun3scsi_release (struct Scsi_Host *);
  57
  58#ifndef CMD_PER_LUN
  59#define CMD_PER_LUN 2
  60#endif
  61
  62#ifndef CAN_QUEUE
  63#define CAN_QUEUE 16
  64#endif
  65
  66#ifndef SG_TABLESIZE
  67#define SG_TABLESIZE SG_NONE
  68#endif
  69
  70#ifndef MAX_TAGS
  71#define MAX_TAGS 32
  72#endif
  73
  74#ifndef USE_TAGGED_QUEUING
  75#define USE_TAGGED_QUEUING 1
  76#endif
  77
  78#include <scsi/scsicam.h>
  79
  80#ifdef SUN3_SCSI_VME
  81#define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI"
  82#else
  83#define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI"
  84#endif
  85
  86#ifndef HOSTS_C
  87
  88#define NCR5380_implementation_fields \
  89    int port, ctrl
  90
  91#define NCR5380_local_declare() \
  92        struct Scsi_Host *_instance
  93
  94#define NCR5380_setup(instance) \
  95        _instance = instance
  96
  97#define NCR5380_read(reg) sun3scsi_read(reg)
  98#define NCR5380_write(reg, value) sun3scsi_write(reg, value)
  99
 100#define NCR5380_intr sun3scsi_intr
 101#define NCR5380_queue_command sun3scsi_queue_command
 102#define NCR5380_bus_reset sun3scsi_bus_reset
 103#define NCR5380_abort sun3scsi_abort
 104#define NCR5380_proc_info sun3scsi_proc_info
 105#define NCR5380_dma_xfer_len(i, cmd, phase) \
 106        sun3scsi_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)
 107
 108#define NCR5380_dma_write_setup(instance, data, count) sun3scsi_dma_setup(data, count, 1)
 109#define NCR5380_dma_read_setup(instance, data, count) sun3scsi_dma_setup(data, count, 0)
 110#define NCR5380_dma_residual sun3scsi_dma_residual
 111
 112#define BOARD_NORMAL    0
 113#define BOARD_NCR53C400 1
 114
 115/* additional registers - mainly DMA control regs */
 116/* these start at regbase + 8 -- directly after the NCR regs */
 117struct sun3_dma_regs {
 118        unsigned short dma_addr_hi; /* vme only */
 119        unsigned short dma_addr_lo; /* vme only */
 120        unsigned short dma_count_hi; /* vme only */
 121        unsigned short dma_count_lo; /* vme only */
 122        unsigned short udc_data; /* udc dma data reg (obio only) */
 123        unsigned short udc_addr; /* uda dma addr reg (obio only) */
 124        unsigned short fifo_data; /* fifo data reg, holds extra byte on
 125                                     odd dma reads */
 126        unsigned short fifo_count; 
 127        unsigned short csr; /* control/status reg */
 128        unsigned short bpack_hi; /* vme only */
 129        unsigned short bpack_lo; /* vme only */
 130        unsigned short ivect; /* vme only */
 131        unsigned short fifo_count_hi; /* vme only */
 132};
 133
 134/* ucd chip specific regs - live in dvma space */
 135struct sun3_udc_regs {
 136     unsigned short rsel; /* select regs to load */
 137     unsigned short addr_hi; /* high word of addr */
 138     unsigned short addr_lo; /* low word */
 139     unsigned short count; /* words to be xfer'd */
 140     unsigned short mode_hi; /* high word of channel mode */
 141     unsigned short mode_lo; /* low word of channel mode */
 142};
 143
 144/* addresses of the udc registers */
 145#define UDC_MODE 0x38 
 146#define UDC_CSR 0x2e /* command/status */
 147#define UDC_CHN_HI 0x26 /* chain high word */
 148#define UDC_CHN_LO 0x22 /* chain lo word */
 149#define UDC_CURA_HI 0x1a /* cur reg A high */
 150#define UDC_CURA_LO 0x0a /* cur reg A low */
 151#define UDC_CURB_HI 0x12 /* cur reg B high */
 152#define UDC_CURB_LO 0x02 /* cur reg B low */
 153#define UDC_MODE_HI 0x56 /* mode reg high */
 154#define UDC_MODE_LO 0x52 /* mode reg low */
 155#define UDC_COUNT 0x32 /* words to xfer */
 156
 157/* some udc commands */
 158#define UDC_RESET 0
 159#define UDC_CHN_START 0xa0 /* start chain */
 160#define UDC_INT_ENABLE 0x32 /* channel 1 int on */
 161
 162/* udc mode words */
 163#define UDC_MODE_HIWORD 0x40
 164#define UDC_MODE_LSEND 0xc2
 165#define UDC_MODE_LRECV 0xd2
 166
 167/* udc reg selections */
 168#define UDC_RSEL_SEND 0x282
 169#define UDC_RSEL_RECV 0x182
 170
 171/* bits in csr reg */
 172#define CSR_DMA_ACTIVE 0x8000
 173#define CSR_DMA_CONFLICT 0x4000
 174#define CSR_DMA_BUSERR 0x2000
 175
 176#define CSR_FIFO_EMPTY 0x400 /* fifo flushed? */
 177#define CSR_SDB_INT 0x200 /* sbc interrupt pending */
 178#define CSR_DMA_INT 0x100 /* dma interrupt pending */
 179
 180#define CSR_LEFT 0xc0
 181#define CSR_LEFT_3 0xc0
 182#define CSR_LEFT_2 0x80
 183#define CSR_LEFT_1 0x40
 184#define CSR_PACK_ENABLE 0x20
 185
 186#define CSR_DMA_ENABLE 0x10
 187
 188#define CSR_SEND 0x8 /* 1 = send  0 = recv */
 189#define CSR_FIFO 0x2 /* reset fifo */
 190#define CSR_INTR 0x4 /* interrupt enable */
 191#define CSR_SCSI 0x1 
 192
 193#define VME_DATA24 0x3d00
 194
 195// debugging printk's, taken from atari_scsi.h 
 196/* Debugging printk definitions:
 197 *
 198 *  ARB  -> arbitration
 199 *  ASEN -> auto-sense
 200 *  DMA  -> DMA
 201 *  HSH  -> PIO handshake
 202 *  INF  -> information transfer
 203 *  INI  -> initialization
 204 *  INT  -> interrupt
 205 *  LNK  -> linked commands
 206 *  MAIN -> NCR5380_main() control flow
 207 *  NDAT -> no data-out phase
 208 *  NWR  -> no write commands
 209 *  PIO  -> PIO transfers
 210 *  PDMA -> pseudo DMA (unused on Atari)
 211 *  QU   -> queues
 212 *  RSL  -> reselections
 213 *  SEL  -> selections
 214 *  USL  -> usleep cpde (unused on Atari)
 215 *  LBS  -> last byte sent (unused on Atari)
 216 *  RSS  -> restarting of selections
 217 *  EXT  -> extended messages
 218 *  ABRT -> aborting and resetting
 219 *  TAG  -> queue tag handling
 220 *  MER  -> merging of consec. buffers
 221 *
 222 */
 223
 224#include "NCR5380.h"
 225
 226#if NDEBUG & NDEBUG_ARBITRATION
 227#define ARB_PRINTK(format, args...) \
 228        printk(KERN_DEBUG format , ## args)
 229#else
 230#define ARB_PRINTK(format, args...)
 231#endif
 232#if NDEBUG & NDEBUG_AUTOSENSE
 233#define ASEN_PRINTK(format, args...) \
 234        printk(KERN_DEBUG format , ## args)
 235#else
 236#define ASEN_PRINTK(format, args...)
 237#endif
 238#if NDEBUG & NDEBUG_DMA
 239#define DMA_PRINTK(format, args...) \
 240        printk(KERN_DEBUG format , ## args)
 241#else
 242#define DMA_PRINTK(format, args...)
 243#endif
 244#if NDEBUG & NDEBUG_HANDSHAKE
 245#define HSH_PRINTK(format, args...) \
 246        printk(KERN_DEBUG format , ## args)
 247#else
 248#define HSH_PRINTK(format, args...)
 249#endif
 250#if NDEBUG & NDEBUG_INFORMATION
 251#define INF_PRINTK(format, args...) \
 252        printk(KERN_DEBUG format , ## args)
 253#else
 254#define INF_PRINTK(format, args...)
 255#endif
 256#if NDEBUG & NDEBUG_INIT
 257#define INI_PRINTK(format, args...) \
 258        printk(KERN_DEBUG format , ## args)
 259#else
 260#define INI_PRINTK(format, args...)
 261#endif
 262#if NDEBUG & NDEBUG_INTR
 263#define INT_PRINTK(format, args...) \
 264        printk(KERN_DEBUG format , ## args)
 265#else
 266#define INT_PRINTK(format, args...)
 267#endif
 268#if NDEBUG & NDEBUG_LINKED
 269#define LNK_PRINTK(format, args...) \
 270        printk(KERN_DEBUG format , ## args)
 271#else
 272#define LNK_PRINTK(format, args...)
 273#endif
 274#if NDEBUG & NDEBUG_MAIN
 275#define MAIN_PRINTK(format, args...) \
 276        printk(KERN_DEBUG format , ## args)
 277#else
 278#define MAIN_PRINTK(format, args...)
 279#endif
 280#if NDEBUG & NDEBUG_NO_DATAOUT
 281#define NDAT_PRINTK(format, args...) \
 282        printk(KERN_DEBUG format , ## args)
 283#else
 284#define NDAT_PRINTK(format, args...)
 285#endif
 286#if NDEBUG & NDEBUG_NO_WRITE
 287#define NWR_PRINTK(format, args...) \
 288        printk(KERN_DEBUG format , ## args)
 289#else
 290#define NWR_PRINTK(format, args...)
 291#endif
 292#if NDEBUG & NDEBUG_PIO
 293#define PIO_PRINTK(format, args...) \
 294        printk(KERN_DEBUG format , ## args)
 295#else
 296#define PIO_PRINTK(format, args...)
 297#endif
 298#if NDEBUG & NDEBUG_PSEUDO_DMA
 299#define PDMA_PRINTK(format, args...) \
 300        printk(KERN_DEBUG format , ## args)
 301#else
 302#define PDMA_PRINTK(format, args...)
 303#endif
 304#if NDEBUG & NDEBUG_QUEUES
 305#define QU_PRINTK(format, args...) \
 306        printk(KERN_DEBUG format , ## args)
 307#else
 308#define QU_PRINTK(format, args...)
 309#endif
 310#if NDEBUG & NDEBUG_RESELECTION
 311#define RSL_PRINTK(format, args...) \
 312        printk(KERN_DEBUG format , ## args)
 313#else
 314#define RSL_PRINTK(format, args...)
 315#endif
 316#if NDEBUG & NDEBUG_SELECTION
 317#define SEL_PRINTK(format, args...) \
 318        printk(KERN_DEBUG format , ## args)
 319#else
 320#define SEL_PRINTK(format, args...)
 321#endif
 322#if NDEBUG & NDEBUG_USLEEP
 323#define USL_PRINTK(format, args...) \
 324        printk(KERN_DEBUG format , ## args)
 325#else
 326#define USL_PRINTK(format, args...)
 327#endif
 328#if NDEBUG & NDEBUG_LAST_BYTE_SENT
 329#define LBS_PRINTK(format, args...) \
 330        printk(KERN_DEBUG format , ## args)
 331#else
 332#define LBS_PRINTK(format, args...)
 333#endif
 334#if NDEBUG & NDEBUG_RESTART_SELECT
 335#define RSS_PRINTK(format, args...) \
 336        printk(KERN_DEBUG format , ## args)
 337#else
 338#define RSS_PRINTK(format, args...)
 339#endif
 340#if NDEBUG & NDEBUG_EXTENDED
 341#define EXT_PRINTK(format, args...) \
 342        printk(KERN_DEBUG format , ## args)
 343#else
 344#define EXT_PRINTK(format, args...)
 345#endif
 346#if NDEBUG & NDEBUG_ABORT
 347#define ABRT_PRINTK(format, args...) \
 348        printk(KERN_DEBUG format , ## args)
 349#else
 350#define ABRT_PRINTK(format, args...)
 351#endif
 352#if NDEBUG & NDEBUG_TAGS
 353#define TAG_PRINTK(format, args...) \
 354        printk(KERN_DEBUG format , ## args)
 355#else
 356#define TAG_PRINTK(format, args...)
 357#endif
 358#if NDEBUG & NDEBUG_MERGING
 359#define MER_PRINTK(format, args...) \
 360        printk(KERN_DEBUG format , ## args)
 361#else
 362#define MER_PRINTK(format, args...)
 363#endif
 364
 365/* conditional macros for NCR5380_print_{,phase,status} */
 366
 367#define NCR_PRINT(mask) \
 368        ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)
 369
 370#define NCR_PRINT_PHASE(mask) \
 371        ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)
 372
 373#define NCR_PRINT_STATUS(mask) \
 374        ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)
 375
 376
 377
 378#endif /* ndef HOSTS_C */
 379#endif /* SUN3_NCR5380_H */
 380
 381