LXR linux/drivers/scsi/arcmsr/arcmsr

   1/*
   2*******************************************************************************
   3**        O.S   : Linux
   4**   FILE NAME  : arcmsr_hba.c
   5**        BY    : Nick Cheng
   6**   Description: SCSI RAID Device Driver for
   7**                ARECA RAID Host adapter
   8*******************************************************************************
   9** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
  10**
  11**     Web site: www.areca.com.tw
  12**       E-mail: support@areca.com.tw
  13**
  14** This program is free software; you can redistribute it and/or modify
  15** it under the terms of the GNU General Public License version 2 as
  16** published by the Free Software Foundation.
  17** This program is distributed in the hope that it will be useful,
  18** but WITHOUT ANY WARRANTY; without even the implied warranty of
  19** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20** GNU General Public License for more details.
  21*******************************************************************************
  22** Redistribution and use in source and binary forms, with or without
  23** modification, are permitted provided that the following conditions
  24** are met:
  25** 1. Redistributions of source code must retain the above copyright
  26**    notice, this list of conditions and the following disclaimer.
  27** 2. Redistributions in binary form must reproduce the above copyright
  28**    notice, this list of conditions and the following disclaimer in the
  29**    documentation and/or other materials provided with the distribution.
  30** 3. The name of the author may not be used to endorse or promote products
  31**    derived from this software without specific prior written permission.
  32**
  33** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  34** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  35** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  36** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  37** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
  38** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  39** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
  40** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  41** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
  42** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  43*******************************************************************************
  44** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
  45**     Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
  46*******************************************************************************
  47*/
  48#include <linux/module.h>
  49#include <linux/reboot.h>
  50#include <linux/spinlock.h>
  51#include <linux/pci_ids.h>
  52#include <linux/interrupt.h>
  53#include <linux/moduleparam.h>
  54#include <linux/errno.h>
  55#include <linux/types.h>
  56#include <linux/delay.h>
  57#include <linux/dma-mapping.h>
  58#include <linux/timer.h>
  59#include <linux/slab.h>
  60#include <linux/pci.h>
  61#include <linux/aer.h>
  62#include <asm/dma.h>
  63#include <asm/io.h>
  64#include <asm/uaccess.h>
  65#include <scsi/scsi_host.h>
  66#include <scsi/scsi.h>
  67#include <scsi/scsi_cmnd.h>
  68#include <scsi/scsi_tcq.h>
  69#include <scsi/scsi_device.h>
  70#include <scsi/scsi_transport.h>
  71#include <scsi/scsicam.h>
  72#include "arcmsr.h"
  73MODULE_AUTHOR("Nick Cheng <support@areca.com.tw>");
  74MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx/1880) SATA/SAS RAID Host Bus Adapter");
  75MODULE_LICENSE("Dual BSD/GPL");
  76MODULE_VERSION(ARCMSR_DRIVER_VERSION);
  77
  78#define ARCMSR_SLEEPTIME        10
  79#define ARCMSR_RETRYCOUNT       12
  80
  81wait_queue_head_t wait_q;
  82static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
  83                                        struct scsi_cmnd *cmd);
  84static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
  85static int arcmsr_abort(struct scsi_cmnd *);
  86static int arcmsr_bus_reset(struct scsi_cmnd *);
  87static int arcmsr_bios_param(struct scsi_device *sdev,
  88                struct block_device *bdev, sector_t capacity, int *info);
  89static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
  90static int arcmsr_probe(struct pci_dev *pdev,
  91                                const struct pci_device_id *id);
  92static void arcmsr_remove(struct pci_dev *pdev);
  93static void arcmsr_shutdown(struct pci_dev *pdev);
  94static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  95static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  96static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
  97static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
  98static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
  99static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
 100static void arcmsr_request_device_map(unsigned long pacb);
 101static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
 102static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
 103static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
 104static void arcmsr_message_isr_bh_fn(struct work_struct *work);
 105static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
 106static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
 107static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
 108static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
 109static const char *arcmsr_info(struct Scsi_Host *);
 110static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 111static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
 112                                          int queue_depth, int reason)
 113{
 114        if (reason != SCSI_QDEPTH_DEFAULT)
 115                return -EOPNOTSUPP;
 116
 117        if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 118                queue_depth = ARCMSR_MAX_CMD_PERLUN;
 119        scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 120        return queue_depth;
 121}
 122
 123static struct scsi_host_template arcmsr_scsi_host_template = {
 124        .module                 = THIS_MODULE,
 125        .name                   = "ARCMSR ARECA SATA/SAS RAID Controller"
 126                                ARCMSR_DRIVER_VERSION,
 127        .info                   = arcmsr_info,
 128        .queuecommand           = arcmsr_queue_command,
 129        .eh_abort_handler               = arcmsr_abort,
 130        .eh_bus_reset_handler   = arcmsr_bus_reset,
 131        .bios_param             = arcmsr_bios_param,
 132        .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 133        .can_queue              = ARCMSR_MAX_FREECCB_NUM,
 134        .this_id                        = ARCMSR_SCSI_INITIATOR_ID,
 135        .sg_tablesize                   = ARCMSR_DEFAULT_SG_ENTRIES, 
 136        .max_sectors                    = ARCMSR_MAX_XFER_SECTORS_C, 
 137        .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 138        .use_clustering         = ENABLE_CLUSTERING,
 139        .shost_attrs            = arcmsr_host_attrs,
 140};
 141static struct pci_device_id arcmsr_device_id_table[] = {
 142        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 143        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 144        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 145        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 146        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
 147        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
 148        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
 149        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
 150        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 151        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 152        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
 153        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
 154        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
 155        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
 156        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
 157        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
 158        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
 159        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
 160        {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)},
 161        {0, 0}, /* Terminating entry */
 162};
 163MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 164static struct pci_driver arcmsr_pci_driver = {
 165        .name                   = "arcmsr",
 166        .id_table                       = arcmsr_device_id_table,
 167        .probe                  = arcmsr_probe,
 168        .remove                 = arcmsr_remove,
 169        .shutdown               = arcmsr_shutdown,
 170};
 171/*
 172****************************************************************************
 173****************************************************************************
 174*/
 175
 176static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
 177{
 178        switch (acb->adapter_type) {
 179        case ACB_ADAPTER_TYPE_A:
 180        case ACB_ADAPTER_TYPE_C:
 181                break;
 182        case ACB_ADAPTER_TYPE_B:{
 183                dma_free_coherent(&acb->pdev->dev,
 184                        sizeof(struct MessageUnit_B),
 185                        acb->pmuB, acb->dma_coherent_handle_hbb_mu);
 186        }
 187        }
 188}
 189
 190static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 191{
 192        struct pci_dev *pdev = acb->pdev;
 193        switch (acb->adapter_type){
 194        case ACB_ADAPTER_TYPE_A:{
 195                acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 196                if (!acb->pmuA) {
 197                        printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 198                        return false;
 199                }
 200                break;
 201        }
 202        case ACB_ADAPTER_TYPE_B:{
 203                void __iomem *mem_base0, *mem_base1;
 204                mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 205                if (!mem_base0) {
 206                        printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 207                        return false;
 208                }
 209                mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 210                if (!mem_base1) {
 211                        iounmap(mem_base0);
 212                        printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 213                        return false;
 214                }
 215                acb->mem_base0 = mem_base0;
 216                acb->mem_base1 = mem_base1;
 217                break;
 218        }
 219        case ACB_ADAPTER_TYPE_C:{
 220                acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 221                if (!acb->pmuC) {
 222                        printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 223                        return false;
 224                }
 225                if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 226                        writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 227                        return true;
 228                }
 229                break;
 230        }
 231        }
 232        return true;
 233}
 234
 235static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 236{
 237        switch (acb->adapter_type) {
 238        case ACB_ADAPTER_TYPE_A:{
 239                iounmap(acb->pmuA);
 240        }
 241        break;
 242        case ACB_ADAPTER_TYPE_B:{
 243                iounmap(acb->mem_base0);
 244                iounmap(acb->mem_base1);
 245        }
 246
 247        break;
 248        case ACB_ADAPTER_TYPE_C:{
 249                iounmap(acb->pmuC);
 250        }
 251        }
 252}
 253
 254static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 255{
 256        irqreturn_t handle_state;
 257        struct AdapterControlBlock *acb = dev_id;
 258
 259        handle_state = arcmsr_interrupt(acb);
 260        return handle_state;
 261}
 262
 263static int arcmsr_bios_param(struct scsi_device *sdev,
 264                struct block_device *bdev, sector_t capacity, int *geom)
 265{
 266        int ret, heads, sectors, cylinders, total_capacity;
 267        unsigned char *buffer;/* return copy of block device's partition table */
 268
 269        buffer = scsi_bios_ptable(bdev);
 270        if (buffer) {
 271                ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 272                kfree(buffer);
 273                if (ret != -1)
 274                        return ret;
 275        }
 276        total_capacity = capacity;
 277        heads = 64;
 278        sectors = 32;
 279        cylinders = total_capacity / (heads * sectors);
 280        if (cylinders > 1024) {
 281                heads = 255;
 282                sectors = 63;
 283                cylinders = total_capacity / (heads * sectors);
 284        }
 285        geom[0] = heads;
 286        geom[1] = sectors;
 287        geom[2] = cylinders;
 288        return 0;
 289}
 290
 291static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 292{
 293        struct pci_dev *pdev = acb->pdev;
 294        u16 dev_id;
 295        pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 296        acb->dev_id = dev_id;
 297        switch (dev_id) {
 298        case 0x1880: {
 299                acb->adapter_type = ACB_ADAPTER_TYPE_C;
 300                }
 301                break;
 302        case 0x1201: {
 303                acb->adapter_type = ACB_ADAPTER_TYPE_B;
 304                }
 305                break;
 306
 307        default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
 308        }
 309}
 310
 311static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 312{
 313        struct MessageUnit_A __iomem *reg = acb->pmuA;
 314        int i;
 315
 316        for (i = 0; i < 2000; i++) {
 317                if (readl(&reg->outbound_intstatus) &
 318                                ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 319                        writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 320                                &reg->outbound_intstatus);
 321                        return true;
 322                }
 323                msleep(10);
 324        } /* max 20 seconds */
 325
 326        return false;
 327}
 328
 329static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
 330{
 331        struct MessageUnit_B *reg = acb->pmuB;
 332        int i;
 333
 334        for (i = 0; i < 2000; i++) {
 335                if (readl(reg->iop2drv_doorbell)
 336                        & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 337                        writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN,
 338                                        reg->iop2drv_doorbell);
 339                        writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT,
 340                                        reg->drv2iop_doorbell);
 341                        return true;
 342                }
 343                msleep(10);
 344        } /* max 20 seconds */
 345
 346        return false;
 347}
 348
 349static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
 350{
 351        struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
 352        int i;
 353
 354        for (i = 0; i < 2000; i++) {
 355                if (readl(&phbcmu->outbound_doorbell)
 356                                & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 357                        writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR,
 358                                &phbcmu->outbound_doorbell_clear); /*clear interrupt*/
 359                        return true;
 360                }
 361                msleep(10);
 362        } /* max 20 seconds */
 363
 364        return false;
 365}
 366
 367static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 368{
 369        struct MessageUnit_A __iomem *reg = acb->pmuA;
 370        int retry_count = 30;
 371        writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 372        do {
 373                if (arcmsr_hba_wait_msgint_ready(acb))
 374                        break;
 375                else {
 376                        retry_count--;
 377                        printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 378                        timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 379                }
 380        } while (retry_count != 0);
 381}
 382
 383static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
 384{
 385        struct MessageUnit_B *reg = acb->pmuB;
 386        int retry_count = 30;
 387        writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 388        do {
 389                if (arcmsr_hbb_wait_msgint_ready(acb))
 390                        break;
 391                else {
 392                        retry_count--;
 393                        printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 394                        timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 395                }
 396        } while (retry_count != 0);
 397}
 398
 399static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
 400{
 401        struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 402        int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 403        writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 404        writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 405        do {
 406                if (arcmsr_hbc_wait_msgint_ready(pACB)) {
 407                        break;
 408                } else {
 409                        retry_count--;
 410                        printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 411                        timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 412                }
 413        } while (retry_count != 0);
 414        return;
 415}
 416static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 417{
 418        switch (acb->adapter_type) {
 419
 420        case ACB_ADAPTER_TYPE_A: {
 421                arcmsr_flush_hba_cache(acb);
 422                }
 423                break;
 424
 425        case ACB_ADAPTER_TYPE_B: {
 426                arcmsr_flush_hbb_cache(acb);
 427                }
 428                break;
 429        case ACB_ADAPTER_TYPE_C: {
 430                arcmsr_flush_hbc_cache(acb);
 431                }
 432        }
 433}
 434
 435static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 436{
 437        struct pci_dev *pdev = acb->pdev;
 438        void *dma_coherent;
 439        dma_addr_t dma_coherent_handle;
 440        struct CommandControlBlock *ccb_tmp;
 441        int i = 0, j = 0;
 442        dma_addr_t cdb_phyaddr;
 443        unsigned long roundup_ccbsize;
 444        unsigned long max_xfer_len;
 445        unsigned long max_sg_entrys;
 446        uint32_t  firm_config_version;
 447
 448        for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 449                for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 450                        acb->devstate[i][j] = ARECA_RAID_GONE;
 451
 452        max_xfer_len = ARCMSR_MAX_XFER_LEN;
 453        max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 454        firm_config_version = acb->firm_cfg_version;
 455        if((firm_config_version & 0xFF) >= 3){
 456                max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 457                max_sg_entrys = (max_xfer_len/4096);
 458        }
 459        acb->host->max_sectors = max_xfer_len/512;
 460        acb->host->sg_tablesize = max_sg_entrys;
 461        roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 462        acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM;
 463        dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 464        if(!dma_coherent){
 465                printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error\n", acb->host->host_no);
 466                return -ENOMEM;
 467        }
 468        acb->dma_coherent = dma_coherent;
 469        acb->dma_coherent_handle = dma_coherent_handle;
 470        memset(dma_coherent, 0, acb->uncache_size);
 471        ccb_tmp = dma_coherent;
 472        acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 473        for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 474                cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 475                ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
 476                acb->pccb_pool[i] = ccb_tmp;
 477                ccb_tmp->acb = acb;
 478                INIT_LIST_HEAD(&ccb_tmp->list);
 479                list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 480                ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 481                dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 482        }
 483        return 0;
 484}
 485
 486static void arcmsr_message_isr_bh_fn(struct work_struct *work) 
 487{
 488        struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 489        switch (acb->adapter_type) {
 490                case ACB_ADAPTER_TYPE_A: {
 491
 492                        struct MessageUnit_A __iomem *reg  = acb->pmuA;
 493                        char *acb_dev_map = (char *)acb->device_map;
 494                        uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
 495                        char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
 496                        int target, lun;
 497                        struct scsi_device *psdev;
 498                        char diff;
 499
 500                        atomic_inc(&acb->rq_map_token);
 501                        if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 502                                for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 503                                        diff = (*acb_dev_map)^readb(devicemap);
 504                                        if (diff != 0) {
 505                                                char temp;
 506                                                *acb_dev_map = readb(devicemap);
 507                                                temp =*acb_dev_map;
 508                                                for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 509                                                        if((temp & 0x01)==1 && (diff & 0x01) == 1) {    
 510                                                                scsi_add_device(acb->host, 0, target, lun);
 511                                                        }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 512                                                                psdev = scsi_device_lookup(acb->host, 0, target, lun);
 513                                                                if (psdev != NULL ) {
 514                                                                        scsi_remove_device(psdev);
 515                                                                        scsi_device_put(psdev);
 516                                                                }
 517                                                        }
 518                                                        temp >>= 1;
 519                                                        diff >>= 1;
 520                                                }
 521                                        }
 522                                        devicemap++;
 523                                        acb_dev_map++;
 524                                }
 525                        }
 526                        break;
 527                }
 528
 529                case ACB_ADAPTER_TYPE_B: {
 530                        struct MessageUnit_B *reg  = acb->pmuB;
 531                        char *acb_dev_map = (char *)acb->device_map;
 532                        uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
 533                        char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
 534                        int target, lun;
 535                        struct scsi_device *psdev;
 536                        char diff;
 537
 538                        atomic_inc(&acb->rq_map_token);
 539                        if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 540                                for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 541                                        diff = (*acb_dev_map)^readb(devicemap);
 542                                        if (diff != 0) {
 543                                                char temp;
 544                                                *acb_dev_map = readb(devicemap);
 545                                                temp =*acb_dev_map;
 546                                                for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 547                                                        if((temp & 0x01)==1 && (diff & 0x01) == 1) {    
 548                                                                scsi_add_device(acb->host, 0, target, lun);
 549                                                        }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 550                                                                psdev = scsi_device_lookup(acb->host, 0, target, lun);
 551                                                                if (psdev != NULL ) {
 552                                                                        scsi_remove_device(psdev);
 553                                                                        scsi_device_put(psdev);
 554                                                                }
 555                                                        }
 556                                                        temp >>= 1;
 557                                                        diff >>= 1;
 558                                                }
 559                                        }
 560                                        devicemap++;
 561                                        acb_dev_map++;
 562                                }
 563                        }
 564                }
 565                break;
 566                case ACB_ADAPTER_TYPE_C: {
 567                        struct MessageUnit_C *reg  = acb->pmuC;
 568                        char *acb_dev_map = (char *)acb->device_map;
 569                        uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 570                        char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 571                        int target, lun;
 572                        struct scsi_device *psdev;
 573                        char diff;
 574
 575                        atomic_inc(&acb->rq_map_token);
 576                        if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 577                                for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
 578                                        diff = (*acb_dev_map)^readb(devicemap);
 579                                        if (diff != 0) {
 580                                                char temp;
 581                                                *acb_dev_map = readb(devicemap);
 582                                                temp = *acb_dev_map;
 583                                                for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 584                                                        if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
 585                                                                scsi_add_device(acb->host, 0, target, lun);
 586                                                        } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 587                                                                psdev = scsi_device_lookup(acb->host, 0, target, lun);
 588                                                                if (psdev != NULL) {
 589                                                                        scsi_remove_device(psdev);
 590                                                                        scsi_device_put(psdev);
 591                                                                }
 592                                                        }
 593                                                        temp >>= 1;
 594                                                        diff >>= 1;
 595                                                }
 596                                        }
 597                                        devicemap++;
 598                                        acb_dev_map++;
 599                                }
 600                        }
 601                }
 602        }
 603}
 604
 605static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 606{
 607        struct Scsi_Host *host;
 608        struct AdapterControlBlock *acb;
 609        uint8_t bus,dev_fun;
 610        int error;
 611        error = pci_enable_device(pdev);
 612        if(error){
 613                return -ENODEV;
 614        }
 615        host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 616        if(!host){
 617                goto pci_disable_dev;
 618        }
 619        error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 620        if(error){
 621                error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 622                if(error){
 623                        printk(KERN_WARNING
 624                               "scsi%d: No suitable DMA mask available\n",
 625                               host->host_no);
 626                        goto scsi_host_release;
 627                }
 628        }
 629        init_waitqueue_head(&wait_q);
 630        bus = pdev->bus->number;
 631        dev_fun = pdev->devfn;
 632        acb = (struct AdapterControlBlock *) host->hostdata;
 633        memset(acb,0,sizeof(struct AdapterControlBlock));
 634        acb->pdev = pdev;
 635        acb->host = host;
 636        host->max_lun = ARCMSR_MAX_TARGETLUN;
 637        host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 638        host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 639        host->can_queue = ARCMSR_MAX_FREECCB_NUM;       /* max simultaneous cmds */             
 640        host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;          
 641        host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 642        host->unique_id = (bus << 8) | dev_fun;
 643        pci_set_drvdata(pdev, host);
 644        pci_set_master(pdev);
 645        error = pci_request_regions(pdev, "arcmsr");
 646        if(error){
 647                goto scsi_host_release;
 648        }
 649        spin_lock_init(&acb->eh_lock);
 650        spin_lock_init(&acb->ccblist_lock);
 651        acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 652                        ACB_F_MESSAGE_RQBUFFER_CLEARED |
 653                        ACB_F_MESSAGE_WQBUFFER_READED);
 654        acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 655        INIT_LIST_HEAD(&acb->ccb_free_list);
 656        arcmsr_define_adapter_type(acb);
 657        error = arcmsr_remap_pciregion(acb);
 658        if(!error){
 659                goto pci_release_regs;
 660        }
 661        error = arcmsr_get_firmware_spec(acb);
 662        if(!error){
 663                goto unmap_pci_region;
 664        }
 665        error = arcmsr_alloc_ccb_pool(acb);
 666        if(error){
 667                goto free_hbb_mu;
 668        }
 669        arcmsr_iop_init(acb);
 670        error = scsi_add_host(host, &pdev->dev);
 671        if(error){
 672                goto RAID_controller_stop;
 673        }
 674        error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
 675        if(error){
 676                goto scsi_host_remove;
 677        }
 678        host->irq = pdev->irq;
 679        scsi_scan_host(host);
 680        INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 681        atomic_set(&acb->rq_map_token, 16);
 682        atomic_set(&acb->ante_token_value, 16);
 683        acb->fw_flag = FW_NORMAL;
 684        init_timer(&acb->eternal_timer);
 685        acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 686        acb->eternal_timer.data = (unsigned long) acb;
 687        acb->eternal_timer.function = &arcmsr_request_device_map;
 688        add_timer(&acb->eternal_timer);
 689        if(arcmsr_alloc_sysfs_attr(acb))
 690                goto out_free_sysfs;
 691        return 0;
 692out_free_sysfs:
 693scsi_host_remove:
 694        scsi_remove_host(host);
 695RAID_controller_stop:
 696        arcmsr_stop_adapter_bgrb(acb);
 697        arcmsr_flush_adapter_cache(acb);
 698        arcmsr_free_ccb_pool(acb);
 699free_hbb_mu:
 700        arcmsr_free_hbb_mu(acb);
 701unmap_pci_region:
 702        arcmsr_unmap_pciregion(acb);
 703pci_release_regs:
 704        pci_release_regions(pdev);
 705scsi_host_release:
 706        scsi_host_put(host);
 707pci_disable_dev:
 708        pci_disable_device(pdev);
 709        return -ENODEV;
 710}
 711
 712static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 713{
 714        struct MessageUnit_A __iomem *reg = acb->pmuA;
 715        writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 716        if (!arcmsr_hba_wait_msgint_ready(acb)) {
 717                printk(KERN_NOTICE
 718                        "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 719                        , acb->host->host_no);
 720                return false;
 721        }
 722        return true;
 723}
 724
 725static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 726{
 727        struct MessageUnit_B *reg = acb->pmuB;
 728
 729        writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 730        if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 731                printk(KERN_NOTICE
 732                        "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 733                        , acb->host->host_no);
 734                return false;
 735        }
 736        return true;
 737}
 738static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
 739{
 740        struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 741        writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 742        writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 743        if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
 744                printk(KERN_NOTICE
 745                        "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 746                        , pACB->host->host_no);
 747                return false;
 748        }
 749        return true;
 750}
 751static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 752{
 753        uint8_t rtnval = 0;
 754        switch (acb->adapter_type) {
 755        case ACB_ADAPTER_TYPE_A: {
 756                rtnval = arcmsr_abort_hba_allcmd(acb);
 757                }
 758                break;
 759
 760        case ACB_ADAPTER_TYPE_B: {
 761                rtnval = arcmsr_abort_hbb_allcmd(acb);
 762                }
 763                break;
 764
 765        case ACB_ADAPTER_TYPE_C: {
 766                rtnval = arcmsr_abort_hbc_allcmd(acb);
 767                }
 768        }
 769        return rtnval;
 770}
 771
 772static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
 773{
 774        struct MessageUnit_B *reg = pacb->pmuB;
 775        writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
 776        if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
 777                printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
 778                return false;
 779        }
 780        return true;
 781}
 782
 783static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 784{
 785        struct scsi_cmnd *pcmd = ccb->pcmd;
 786
 787        scsi_dma_unmap(pcmd);
 788}
 789
 790static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 791{
 792        struct AdapterControlBlock *acb = ccb->acb;
 793        struct scsi_cmnd *pcmd = ccb->pcmd;
 794        unsigned long flags;
 795        atomic_dec(&acb->ccboutstandingcount);
 796        arcmsr_pci_unmap_dma(ccb);
 797        ccb->startdone = ARCMSR_CCB_DONE;
 798        spin_lock_irqsave(&acb->ccblist_lock, flags);
 799        list_add_tail(&ccb->list, &acb->ccb_free_list);
 800        spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 801        pcmd->scsi_done(pcmd);
 802}
 803
 804static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 805{
 806
 807        struct scsi_cmnd *pcmd = ccb->pcmd;
 808        struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 809        pcmd->result = DID_OK << 16;
 810        if (sensebuffer) {
 811                int sense_data_length =
 812                        sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 813                        ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 814                memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 815                memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 816                sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 817                sensebuffer->Valid = 1;
 818        }
 819}
 820
 821static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 822{
 823        u32 orig_mask = 0;
 824        switch (acb->adapter_type) {    
 825        case ACB_ADAPTER_TYPE_A : {
 826                struct MessageUnit_A __iomem *reg = acb->pmuA;
 827                orig_mask = readl(&reg->outbound_intmask);
 828                writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 829                                                &reg->outbound_intmask);
 830                }
 831                break;
 832        case ACB_ADAPTER_TYPE_B : {
 833                struct MessageUnit_B *reg = acb->pmuB;
 834                orig_mask = readl(reg->iop2drv_doorbell_mask);
 835                writel(0, reg->iop2drv_doorbell_mask);
 836                }
 837                break;
 838        case ACB_ADAPTER_TYPE_C:{
 839                struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
 840                /* disable all outbound interrupt */
 841                orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
 842                writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
 843                }
 844                break;
 845        }
 846        return orig_mask;
 847}
 848
 849static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, 
 850                        struct CommandControlBlock *ccb, bool error)
 851{
 852        uint8_t id, lun;
 853        id = ccb->pcmd->device->id;
 854        lun = ccb->pcmd->device->lun;
 855        if (!error) {
 856                if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 857                        acb->devstate[id][lun] = ARECA_RAID_GOOD;
 858                ccb->pcmd->result = DID_OK << 16;
 859                arcmsr_ccb_complete(ccb);
 860        }else{
 861                switch (ccb->arcmsr_cdb.DeviceStatus) {
 862                case ARCMSR_DEV_SELECT_TIMEOUT: {
 863                        acb->devstate[id][lun] = ARECA_RAID_GONE;
 864                        ccb->pcmd->result = DID_NO_CONNECT << 16;
 865                        arcmsr_ccb_complete(ccb);
 866                        }
 867                        break;
 868
 869                case ARCMSR_DEV_ABORTED:
 870
 871                case ARCMSR_DEV_INIT_FAIL: {
 872                        acb->devstate[id][lun] = ARECA_RAID_GONE;
 873                        ccb->pcmd->result = DID_BAD_TARGET << 16;
 874                        arcmsr_ccb_complete(ccb);
 875                        }
 876                        break;
 877
 878                case ARCMSR_DEV_CHECK_CONDITION: {
 879                        acb->devstate[id][lun] = ARECA_RAID_GOOD;
 880                        arcmsr_report_sense_info(ccb);
 881                        arcmsr_ccb_complete(ccb);
 882                        }
 883                        break;
 884
 885                default:
 886                        printk(KERN_NOTICE
 887                                "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
 888                                but got unknown DeviceStatus = 0x%x \n"
 889                                , acb->host->host_no
 890                                , id
 891                                , lun
 892                                , ccb->arcmsr_cdb.DeviceStatus);
 893                                acb->devstate[id][lun] = ARECA_RAID_GONE;
 894                                ccb->pcmd->result = DID_NO_CONNECT << 16;
 895                                arcmsr_ccb_complete(ccb);
 896                        break;
 897                }
 898        }
 899}
 900
 901static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
 902{
 903        int id, lun;
 904        if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
 905                if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
 906                        struct scsi_cmnd *abortcmd = pCCB->pcmd;
 907                        if (abortcmd) {
 908                                id = abortcmd->device->id;
 909                                lun = abortcmd->device->lun;                            
 910                                abortcmd->result |= DID_ABORT << 16;
 911                                arcmsr_ccb_complete(pCCB);
 912                                printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
 913                                acb->host->host_no, pCCB);
 914                        }
 915                        return;
 916                }
 917                printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 918                                done acb = '0x%p'"
 919                                "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
 920                                " ccboutstandingcount = %d \n"
 921                                , acb->host->host_no
 922                                , acb
 923                                , pCCB
 924                                , pCCB->acb
 925                                , pCCB->startdone
 926                                , atomic_read(&acb->ccboutstandingcount));
 927                  return;
 928        }
 929        arcmsr_report_ccb_state(acb, pCCB, error);
 930}
 931
 932static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 933{
 934        int i = 0;
 935        uint32_t flag_ccb;
 936        struct ARCMSR_CDB *pARCMSR_CDB;
 937        bool error;
 938        struct CommandControlBlock *pCCB;
 939        switch (acb->adapter_type) {
 940
 941        case ACB_ADAPTER_TYPE_A: {
 942                struct MessageUnit_A __iomem *reg = acb->pmuA;
 943                uint32_t outbound_intstatus;
 944                outbound_intstatus = readl(&reg->outbound_intstatus) &
 945                                        acb->outbound_int_enable;
 946                /*clear and abort all outbound posted Q*/
 947                writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
 948                while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 949                                && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 950                        pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
 951                        pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 952                        error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 953                        arcmsr_drain_donequeue(acb, pCCB, error);
 954                }
 955                }
 956                break;
 957
 958        case ACB_ADAPTER_TYPE_B: {
 959                struct MessageUnit_B *reg = acb->pmuB;
 960                /*clear all outbound posted Q*/
 961                writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
 962                for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 963                        if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 964                                writel(0, &reg->done_qbuffer[i]);
 965                                pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
 966                                pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 967                                error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 968                                arcmsr_drain_donequeue(acb, pCCB, error);
 969                        }
 970                        reg->post_qbuffer[i] = 0;
 971                }
 972                reg->doneq_index = 0;
 973                reg->postq_index = 0;
 974                }
 975                break;
 976        case ACB_ADAPTER_TYPE_C: {
 977                struct MessageUnit_C *reg = acb->pmuC;
 978                struct  ARCMSR_CDB *pARCMSR_CDB;
 979                uint32_t flag_ccb, ccb_cdb_phy;
 980                bool error;
 981                struct CommandControlBlock *pCCB;
 982                while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 983                        /*need to do*/
 984                        flag_ccb = readl(&reg->outbound_queueport_low);
 985                        ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
 986                        pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
 987                        pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 988                        error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
 989                        arcmsr_drain_donequeue(acb, pCCB, error);
 990                }
 991        }
 992        }
 993}
 994static void arcmsr_remove(struct pci_dev *pdev)
 995{
 996        struct Scsi_Host *host = pci_get_drvdata(pdev);
 997        struct AdapterControlBlock *acb =
 998                (struct AdapterControlBlock *) host->hostdata;
 999        int poll_count = 0;
1000        arcmsr_free_sysfs_attr(acb);

1001        scsi_remove_host(host);
1002        flush_work(&acb->arcmsr_do_message_isr_bh);
1003        del_timer_sync(&acb->eternal_timer);
1004        arcmsr_disable_outbound_ints(acb);
1005        arcmsr_stop_adapter_bgrb(acb);
1006        arcmsr_flush_adapter_cache(acb);        
1007        acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1008        acb->acb_flags &= ~ACB_F_IOP_INITED;
1009
1010        for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1011                if (!atomic_read(&acb->ccboutstandingcount))
1012                        break;
1013                arcmsr_interrupt(acb);/* FIXME: need spinlock */
1014                msleep(25);
1015        }
1016
1017        if (atomic_read(&acb->ccboutstandingcount)) {
1018                int i;
1019
1020                arcmsr_abort_allcmd(acb);
1021                arcmsr_done4abort_postqueue(acb);
1022                for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1023                        struct CommandControlBlock *ccb = acb->pccb_pool[i];
1024                        if (ccb->startdone == ARCMSR_CCB_START) {
1025                                ccb->startdone = ARCMSR_CCB_ABORTED;
1026                                ccb->pcmd->result = DID_ABORT << 16;
1027                                arcmsr_ccb_complete(ccb);
1028                        }
1029                }
1030        }
1031        free_irq(pdev->irq, acb);
1032        arcmsr_free_ccb_pool(acb);
1033        arcmsr_free_hbb_mu(acb);
1034        arcmsr_unmap_pciregion(acb);
1035        pci_release_regions(pdev);
1036        scsi_host_put(host);
1037        pci_disable_device(pdev);
1038        pci_set_drvdata(pdev, NULL);
1039}
1040
1041static void arcmsr_shutdown(struct pci_dev *pdev)
1042{
1043        struct Scsi_Host *host = pci_get_drvdata(pdev);
1044        struct AdapterControlBlock *acb =
1045                (struct AdapterControlBlock *)host->hostdata;
1046        del_timer_sync(&acb->eternal_timer);
1047        arcmsr_disable_outbound_ints(acb);
1048        flush_work(&acb->arcmsr_do_message_isr_bh);
1049        arcmsr_stop_adapter_bgrb(acb);
1050        arcmsr_flush_adapter_cache(acb);
1051}
1052
1053static int arcmsr_module_init(void)
1054{
1055        int error = 0;
1056        error = pci_register_driver(&arcmsr_pci_driver);
1057        return error;
1058}
1059
1060static void arcmsr_module_exit(void)
1061{
1062        pci_unregister_driver(&arcmsr_pci_driver);
1063}
1064module_init(arcmsr_module_init);
1065module_exit(arcmsr_module_exit);
1066
1067static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1068                                                u32 intmask_org)
1069{
1070        u32 mask;
1071        switch (acb->adapter_type) {
1072
1073        case ACB_ADAPTER_TYPE_A: {
1074                struct MessageUnit_A __iomem *reg = acb->pmuA;
1075                mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1076                             ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1077                             ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1078                writel(mask, &reg->outbound_intmask);
1079                acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1080                }
1081                break;
1082
1083        case ACB_ADAPTER_TYPE_B: {
1084                struct MessageUnit_B *reg = acb->pmuB;
1085                mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1086                        ARCMSR_IOP2DRV_DATA_READ_OK |
1087                        ARCMSR_IOP2DRV_CDB_DONE |
1088                        ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1089                writel(mask, reg->iop2drv_doorbell_mask);
1090                acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1091                }
1092                break;
1093        case ACB_ADAPTER_TYPE_C: {
1094                struct MessageUnit_C *reg = acb->pmuC;
1095                mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1096                writel(intmask_org & mask, &reg->host_int_mask);
1097                acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1098                }
1099        }
1100}
1101
1102static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1103        struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1104{
1105        struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1106        int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1107        __le32 address_lo, address_hi;
1108        int arccdbsize = 0x30;
1109        __le32 length = 0;
1110        int i;
1111        struct scatterlist *sg;
1112        int nseg;
1113        ccb->pcmd = pcmd;
1114        memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1115        arcmsr_cdb->TargetID = pcmd->device->id;
1116        arcmsr_cdb->LUN = pcmd->device->lun;
1117        arcmsr_cdb->Function = 1;
1118        arcmsr_cdb->Context = 0;
1119        memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1120
1121        nseg = scsi_dma_map(pcmd);
1122        if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1123                return FAILED;
1124        scsi_for_each_sg(pcmd, sg, nseg, i) {
1125                /* Get the physical address of the current data pointer */
1126                length = cpu_to_le32(sg_dma_len(sg));
1127                address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1128                address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1129                if (address_hi == 0) {
1130                        struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1131
1132                        pdma_sg->address = address_lo;
1133                        pdma_sg->length = length;
1134                        psge += sizeof (struct SG32ENTRY);
1135                        arccdbsize += sizeof (struct SG32ENTRY);
1136                } else {
1137                        struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1138
1139                        pdma_sg->addresshigh = address_hi;
1140                        pdma_sg->address = address_lo;
1141                        pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1142                        psge += sizeof (struct SG64ENTRY);
1143                        arccdbsize += sizeof (struct SG64ENTRY);
1144                }
1145        }
1146        arcmsr_cdb->sgcount = (uint8_t)nseg;
1147        arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1148        arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1149        if ( arccdbsize > 256)
1150                arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1151        if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1152                arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1153        ccb->arc_cdb_size = arccdbsize;
1154        return SUCCESS;
1155}
1156
1157static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1158{
1159        uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1160        struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1161        atomic_inc(&acb->ccboutstandingcount);
1162        ccb->startdone = ARCMSR_CCB_START;
1163        switch (acb->adapter_type) {
1164        case ACB_ADAPTER_TYPE_A: {
1165                struct MessageUnit_A __iomem *reg = acb->pmuA;
1166
1167                if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1168                        writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1169                        &reg->inbound_queueport);
1170                else {
1171                                writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1172                }
1173                }
1174                break;
1175
1176        case ACB_ADAPTER_TYPE_B: {
1177                struct MessageUnit_B *reg = acb->pmuB;
1178                uint32_t ending_index, index = reg->postq_index;
1179
1180                ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1181                writel(0, &reg->post_qbuffer[ending_index]);
1182                if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1183                        writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1184                                                 &reg->post_qbuffer[index]);
1185                } else {
1186                        writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1187                }
1188                index++;
1189                index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1190                reg->postq_index = index;
1191                writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1192                }
1193                break;
1194        case ACB_ADAPTER_TYPE_C: {
1195                struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1196                uint32_t ccb_post_stamp, arc_cdb_size;
1197
1198                arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1199                ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1200                if (acb->cdb_phyaddr_hi32) {
1201                        writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1202                        writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1203                } else {
1204                        writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1205                }
1206                }
1207        }
1208}
1209
1210static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1211{
1212        struct MessageUnit_A __iomem *reg = acb->pmuA;
1213        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1214        writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1215        if (!arcmsr_hba_wait_msgint_ready(acb)) {
1216                printk(KERN_NOTICE
1217                        "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1218                        , acb->host->host_no);
1219        }
1220}
1221
1222static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1223{
1224        struct MessageUnit_B *reg = acb->pmuB;
1225        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1226        writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1227
1228        if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1229                printk(KERN_NOTICE
1230                        "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1231                        , acb->host->host_no);
1232        }
1233}
1234
1235static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1236{
1237        struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1238        pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1239        writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1240        writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1241        if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1242                printk(KERN_NOTICE
1243                        "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1244                        , pACB->host->host_no);
1245        }
1246        return;
1247}
1248static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1249{
1250        switch (acb->adapter_type) {
1251        case ACB_ADAPTER_TYPE_A: {
1252                arcmsr_stop_hba_bgrb(acb);
1253                }
1254                break;
1255
1256        case ACB_ADAPTER_TYPE_B: {
1257                arcmsr_stop_hbb_bgrb(acb);
1258                }
1259                break;
1260        case ACB_ADAPTER_TYPE_C: {
1261                arcmsr_stop_hbc_bgrb(acb);
1262                }
1263        }
1264}
1265
1266static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1267{
1268        dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1269}
1270
1271void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1272{
1273        switch (acb->adapter_type) {
1274        case ACB_ADAPTER_TYPE_A: {
1275                struct MessageUnit_A __iomem *reg = acb->pmuA;
1276                writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1277                }
1278                break;
1279
1280        case ACB_ADAPTER_TYPE_B: {
1281                struct MessageUnit_B *reg = acb->pmuB;
1282                writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1283                }
1284                break;
1285        case ACB_ADAPTER_TYPE_C: {
1286                struct MessageUnit_C __iomem *reg = acb->pmuC;
1287                writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1288                }
1289        }
1290}
1291
1292static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1293{
1294        switch (acb->adapter_type) {
1295        case ACB_ADAPTER_TYPE_A: {
1296                struct MessageUnit_A __iomem *reg = acb->pmuA;
1297                /*
1298                ** push inbound doorbell tell iop, driver data write ok
1299                ** and wait reply on next hwinterrupt for next Qbuffer post
1300                */
1301                writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1302                }
1303                break;
1304
1305        case ACB_ADAPTER_TYPE_B: {
1306                struct MessageUnit_B *reg = acb->pmuB;
1307                /*
1308                ** push inbound doorbell tell iop, driver data write ok
1309                ** and wait reply on next hwinterrupt for next Qbuffer post
1310                */
1311                writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1312                }
1313                break;
1314        case ACB_ADAPTER_TYPE_C: {
1315                struct MessageUnit_C __iomem *reg = acb->pmuC;
1316                /*
1317                ** push inbound doorbell tell iop, driver data write ok
1318                ** and wait reply on next hwinterrupt for next Qbuffer post
1319                */
1320                writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1321                }
1322                break;
1323        }
1324}
1325
1326struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1327{
1328        struct QBUFFER __iomem *qbuffer = NULL;
1329        switch (acb->adapter_type) {
1330
1331        case ACB_ADAPTER_TYPE_A: {
1332                struct MessageUnit_A __iomem *reg = acb->pmuA;
1333                qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1334                }
1335                break;
1336
1337        case ACB_ADAPTER_TYPE_B: {
1338                struct MessageUnit_B *reg = acb->pmuB;
1339                qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1340                }
1341                break;
1342        case ACB_ADAPTER_TYPE_C: {
1343                struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1344                qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1345                }
1346        }
1347        return qbuffer;
1348}
1349
1350static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1351{
1352        struct QBUFFER __iomem *pqbuffer = NULL;
1353        switch (acb->adapter_type) {
1354
1355        case ACB_ADAPTER_TYPE_A: {
1356                struct MessageUnit_A __iomem *reg = acb->pmuA;
1357                pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1358                }
1359                break;
1360
1361        case ACB_ADAPTER_TYPE_B: {
1362                struct MessageUnit_B  *reg = acb->pmuB;
1363                pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1364                }
1365                break;
1366        case ACB_ADAPTER_TYPE_C: {
1367                struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1368                pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1369        }
1370
1371        }
1372        return pqbuffer;
1373}
1374
1375static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1376{
1377        struct QBUFFER __iomem *prbuffer;
1378        struct QBUFFER *pQbuffer;
1379        uint8_t __iomem *iop_data;
1380        int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1381        rqbuf_lastindex = acb->rqbuf_lastindex;
1382        rqbuf_firstindex = acb->rqbuf_firstindex;
1383        prbuffer = arcmsr_get_iop_rqbuffer(acb);
1384        iop_data = (uint8_t __iomem *)prbuffer->data;
1385        iop_len = prbuffer->data_len;
1386        my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1387
1388        if (my_empty_len >= iop_len)
1389        {
1390                while (iop_len > 0) {
1391                        pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1392                        memcpy(pQbuffer, iop_data, 1);
1393                        rqbuf_lastindex++;
1394                        rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1395                        iop_data++;
1396                        iop_len--;
1397                }
1398                acb->rqbuf_lastindex = rqbuf_lastindex;
1399                arcmsr_iop_message_read(acb);
1400        }
1401
1402        else {
1403                acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1404        }
1405}
1406
1407static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1408{
1409        acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1410        if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1411                uint8_t *pQbuffer;
1412                struct QBUFFER __iomem *pwbuffer;
1413                uint8_t __iomem *iop_data;
1414                int32_t allxfer_len = 0;
1415
1416                acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1417                pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1418                iop_data = (uint8_t __iomem *)pwbuffer->data;
1419
1420                while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1421                                                        (allxfer_len < 124)) {
1422                        pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1423                        memcpy(iop_data, pQbuffer, 1);
1424                        acb->wqbuf_firstindex++;
1425                        acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1426                        iop_data++;
1427                        allxfer_len++;
1428                }
1429                pwbuffer->data_len = allxfer_len;
1430
1431                arcmsr_iop_message_wrote(acb);
1432        }
1433
1434        if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1435                acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1436        }
1437}
1438
1439static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1440{
1441        uint32_t outbound_doorbell;
1442        struct MessageUnit_A __iomem *reg = acb->pmuA;
1443        outbound_doorbell = readl(&reg->outbound_doorbell);
1444        writel(outbound_doorbell, &reg->outbound_doorbell);
1445        if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1446                arcmsr_iop2drv_data_wrote_handle(acb);
1447        }
1448
1449        if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1450                arcmsr_iop2drv_data_read_handle(acb);
1451        }
1452}
1453static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1454{
1455        uint32_t outbound_doorbell;
1456        struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1457        /*
1458        *******************************************************************
1459        **  Maybe here we need to check wrqbuffer_lock is lock or not
1460        **  DOORBELL: din! don!
1461        **  check if there are any mail need to pack from firmware
1462        *******************************************************************
1463        */
1464        outbound_doorbell = readl(&reg->outbound_doorbell);
1465        writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1466        if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1467                arcmsr_iop2drv_data_wrote_handle(pACB);
1468        }
1469        if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1470                arcmsr_iop2drv_data_read_handle(pACB);
1471        }
1472        if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1473                arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
1474        }
1475        return;
1476}
1477static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1478{
1479        uint32_t flag_ccb;
1480        struct MessageUnit_A __iomem *reg = acb->pmuA;
1481        struct ARCMSR_CDB *pARCMSR_CDB;
1482        struct CommandControlBlock *pCCB;
1483        bool error;
1484        while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1485                pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1486                pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1487                error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1488                arcmsr_drain_donequeue(acb, pCCB, error);
1489        }
1490}
1491static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1492{
1493        uint32_t index;
1494        uint32_t flag_ccb;
1495        struct MessageUnit_B *reg = acb->pmuB;
1496        struct ARCMSR_CDB *pARCMSR_CDB;
1497        struct CommandControlBlock *pCCB;
1498        bool error;
1499        index = reg->doneq_index;
1500        while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1501                writel(0, &reg->done_qbuffer[index]);
1502                pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1503                pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1504                error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1505                arcmsr_drain_donequeue(acb, pCCB, error);
1506                index++;
1507                index %= ARCMSR_MAX_HBB_POSTQUEUE;
1508                reg->doneq_index = index;
1509        }
1510}
1511
1512static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1513{
1514        struct MessageUnit_C *phbcmu;
1515        struct ARCMSR_CDB *arcmsr_cdb;
1516        struct CommandControlBlock *ccb;
1517        uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1518        int error;
1519
1520        phbcmu = (struct MessageUnit_C *)acb->pmuC;
1521        /* areca cdb command done */
1522        /* Use correct offset and size for syncing */
1523
1524        while (readl(&phbcmu->host_int_status) &
1525        ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1526        /* check if command done with no error*/
1527        flag_ccb = readl(&phbcmu->outbound_queueport_low);
1528        ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1529        arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1530        ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1531        error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1532        /* check if command done with no error */
1533        arcmsr_drain_donequeue(acb, ccb, error);
1534        if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1535                writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1536                break;
1537        }
1538        throttling++;
1539        }
1540}
1541/*
1542**********************************************************************************
1543** Handle a message interrupt
1544**
1545** The only message interrupt we expect is in response to a query for the current adapter config.  
1546** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1547**********************************************************************************
1548*/
1549static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1550{
1551        struct MessageUnit_A *reg  = acb->pmuA;
1552        /*clear interrupt and message state*/
1553        writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1554        schedule_work(&acb->arcmsr_do_message_isr_bh);
1555}
1556static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1557{
1558        struct MessageUnit_B *reg  = acb->pmuB;
1559
1560        /*clear interrupt and message state*/
1561        writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1562        schedule_work(&acb->arcmsr_do_message_isr_bh);
1563}
1564/*
1565**********************************************************************************
1566** Handle a message interrupt
1567**
1568** The only message interrupt we expect is in response to a query for the
1569** current adapter config.
1570** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1571**********************************************************************************
1572*/
1573static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1574{
1575        struct MessageUnit_C *reg  = acb->pmuC;
1576        /*clear interrupt and message state*/
1577        writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1578        schedule_work(&acb->arcmsr_do_message_isr_bh);
1579}
1580
1581static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1582{
1583        uint32_t outbound_intstatus;
1584        struct MessageUnit_A __iomem *reg = acb->pmuA;
1585        outbound_intstatus = readl(&reg->outbound_intstatus) &
1586                acb->outbound_int_enable;
1587        if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1588                return 1;
1589        }
1590        writel(outbound_intstatus, &reg->outbound_intstatus);
1591        if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1592                arcmsr_hba_doorbell_isr(acb);
1593        }
1594        if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1595                arcmsr_hba_postqueue_isr(acb);
1596        }
1597        if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)        {
1598                /* messenger of "driver to iop commands" */
1599                arcmsr_hba_message_isr(acb);
1600        }
1601        return 0;
1602}
1603
1604static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1605{
1606        uint32_t outbound_doorbell;
1607        struct MessageUnit_B *reg = acb->pmuB;
1608        outbound_doorbell = readl(reg->iop2drv_doorbell) &
1609                                acb->outbound_int_enable;
1610        if (!outbound_doorbell)
1611                return 1;
1612
1613        writel(~outbound_doorbell, reg->iop2drv_doorbell);
1614        /*in case the last action of doorbell interrupt clearance is cached,
1615        this action can push HW to write down the clear bit*/
1616        readl(reg->iop2drv_doorbell);
1617        writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1618        if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1619                arcmsr_iop2drv_data_wrote_handle(acb);
1620        }
1621        if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1622                arcmsr_iop2drv_data_read_handle(acb);
1623        }
1624        if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1625                arcmsr_hbb_postqueue_isr(acb);
1626        }
1627        if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1628                /* messenger of "driver to iop commands" */
1629                arcmsr_hbb_message_isr(acb);
1630        }
1631        return 0;
1632}
1633
1634static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1635{
1636        uint32_t host_interrupt_status;
1637        struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1638        /*
1639        *********************************************
1640        **   check outbound intstatus
1641        *********************************************
1642        */
1643        host_interrupt_status = readl(&phbcmu->host_int_status);
1644        if (!host_interrupt_status) {
1645                /*it must be share irq*/
1646                return 1;
1647        }
1648        /* MU ioctl transfer doorbell interrupts*/
1649        if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1650                arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
1651        }
1652        /* MU post queue interrupts*/
1653        if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1654                arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
1655        }
1656        return 0;
1657}
1658static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1659{
1660        switch (acb->adapter_type) {
1661        case ACB_ADAPTER_TYPE_A: {
1662                if (arcmsr_handle_hba_isr(acb)) {
1663                        return IRQ_NONE;
1664                }
1665                }
1666                break;
1667
1668        case ACB_ADAPTER_TYPE_B: {
1669                if (arcmsr_handle_hbb_isr(acb)) {
1670                        return IRQ_NONE;
1671                }
1672                }
1673                break;
1674         case ACB_ADAPTER_TYPE_C: {
1675                if (arcmsr_handle_hbc_isr(acb)) {
1676                        return IRQ_NONE;
1677                }
1678                }
1679        }
1680        return IRQ_HANDLED;
1681}
1682
1683static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1684{
1685        if (acb) {
1686                /* stop adapter background rebuild */
1687                if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1688                        uint32_t intmask_org;
1689                        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1690                        intmask_org = arcmsr_disable_outbound_ints(acb);
1691                        arcmsr_stop_adapter_bgrb(acb);
1692                        arcmsr_flush_adapter_cache(acb);
1693                        arcmsr_enable_outbound_ints(acb, intmask_org);
1694                }
1695        }
1696}
1697
1698void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1699{
1700        int32_t wqbuf_firstindex, wqbuf_lastindex;
1701        uint8_t *pQbuffer;
1702        struct QBUFFER __iomem *pwbuffer;
1703        uint8_t __iomem *iop_data;
1704        int32_t allxfer_len = 0;
1705        pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1706        iop_data = (uint8_t __iomem *)pwbuffer->data;
1707        if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1708                acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1709                wqbuf_firstindex = acb->wqbuf_firstindex;
1710                wqbuf_lastindex = acb->wqbuf_lastindex;
1711                while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1712                        pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1713                        memcpy(iop_data, pQbuffer, 1);
1714                        wqbuf_firstindex++;
1715                        wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1716                        iop_data++;
1717                        allxfer_len++;
1718                }
1719                acb->wqbuf_firstindex = wqbuf_firstindex;
1720                pwbuffer->data_len = allxfer_len;
1721                arcmsr_iop_message_wrote(acb);
1722        }
1723}
1724
1725static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1726                                        struct scsi_cmnd *cmd)
1727{
1728        struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1729        int retvalue = 0, transfer_len = 0;
1730        char *buffer;
1731        struct scatterlist *sg;
1732        uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1733                                                (uint32_t ) cmd->cmnd[6] << 16 |
1734                                                (uint32_t ) cmd->cmnd[7] << 8  |
1735                                                (uint32_t ) cmd->cmnd[8];
1736                                                /* 4 bytes: Areca io control code */
1737        sg = scsi_sglist(cmd);
1738        buffer = kmap_atomic(sg_page(sg)) + sg->offset;
1739        if (scsi_sg_count(cmd) > 1) {
1740                retvalue = ARCMSR_MESSAGE_FAIL;
1741                goto message_out;
1742        }
1743        transfer_len += sg->length;
1744
1745        if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1746                retvalue = ARCMSR_MESSAGE_FAIL;
1747                goto message_out;
1748        }
1749        pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1750        switch(controlcode) {
1751
1752        case ARCMSR_MESSAGE_READ_RQBUFFER: {
1753                unsigned char *ver_addr;
1754                uint8_t *pQbuffer, *ptmpQbuffer;
1755                int32_t allxfer_len = 0;
1756
1757                ver_addr = kmalloc(1032, GFP_ATOMIC);
1758                if (!ver_addr) {
1759                        retvalue = ARCMSR_MESSAGE_FAIL;
1760                        goto message_out;
1761                }
1762                                
1763                ptmpQbuffer = ver_addr;
1764                while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1765                        && (allxfer_len < 1031)) {
1766                        pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1767                        memcpy(ptmpQbuffer, pQbuffer, 1);
1768                        acb->rqbuf_firstindex++;
1769                        acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1770                        ptmpQbuffer++;
1771                        allxfer_len++;
1772                }
1773                if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1774
1775                        struct QBUFFER __iomem *prbuffer;
1776                        uint8_t __iomem *iop_data;
1777                        int32_t iop_len;
1778
1779                        acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1780                        prbuffer = arcmsr_get_iop_rqbuffer(acb);
1781                        iop_data = prbuffer->data;
1782                        iop_len = readl(&prbuffer->data_len);
1783                        while (iop_len > 0) {
1784                                acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1785                                acb->rqbuf_lastindex++;
1786                                acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1787                                iop_data++;
1788                                iop_len--;
1789                        }
1790                        arcmsr_iop_message_read(acb);
1791                }
1792                memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1793                pcmdmessagefld->cmdmessage.Length = allxfer_len;
1794                if(acb->fw_flag == FW_DEADLOCK) {
1795                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1796                }else{
1797                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1798                }
1799                kfree(ver_addr);
1800                }
1801                break;
1802
1803        case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1804                unsigned char *ver_addr;
1805                int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1806                uint8_t *pQbuffer, *ptmpuserbuffer;
1807
1808                ver_addr = kmalloc(1032, GFP_ATOMIC);
1809                if (!ver_addr) {
1810                        retvalue = ARCMSR_MESSAGE_FAIL;
1811                        goto message_out;
1812                }
1813                if(acb->fw_flag == FW_DEADLOCK) {
1814                        pcmdmessagefld->cmdmessage.ReturnCode = 
1815                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1816                }else{
1817                        pcmdmessagefld->cmdmessage.ReturnCode = 
1818                        ARCMSR_MESSAGE_RETURNCODE_OK;
1819                }
1820                ptmpuserbuffer = ver_addr;
1821                user_len = pcmdmessagefld->cmdmessage.Length;
1822                memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1823                wqbuf_lastindex = acb->wqbuf_lastindex;
1824                wqbuf_firstindex = acb->wqbuf_firstindex;
1825                if (wqbuf_lastindex != wqbuf_firstindex) {
1826                        struct SENSE_DATA *sensebuffer =
1827                                (struct SENSE_DATA *)cmd->sense_buffer;
1828                        arcmsr_post_ioctldata2iop(acb);
1829                        /* has error report sensedata */
1830                        sensebuffer->ErrorCode = 0x70;
1831                        sensebuffer->SenseKey = ILLEGAL_REQUEST;
1832                        sensebuffer->AdditionalSenseLength = 0x0A;
1833                        sensebuffer->AdditionalSenseCode = 0x20;
1834                        sensebuffer->Valid = 1;
1835                        retvalue = ARCMSR_MESSAGE_FAIL;
1836                } else {
1837                        my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1838                                &(ARCMSR_MAX_QBUFFER - 1);
1839                        if (my_empty_len >= user_len) {
1840                                while (user_len > 0) {
1841                                        pQbuffer =
1842                                        &acb->wqbuffer[acb->wqbuf_lastindex];
1843                                        memcpy(pQbuffer, ptmpuserbuffer, 1);
1844                                        acb->wqbuf_lastindex++;
1845                                        acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1846                                        ptmpuserbuffer++;
1847                                        user_len--;
1848                                }
1849                                if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1850                                        acb->acb_flags &=
1851                                                ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1852                                        arcmsr_post_ioctldata2iop(acb);
1853                                }
1854                        } else {
1855                                /* has error report sensedata */
1856                                struct SENSE_DATA *sensebuffer =
1857                                        (struct SENSE_DATA *)cmd->sense_buffer;
1858                                sensebuffer->ErrorCode = 0x70;
1859                                sensebuffer->SenseKey = ILLEGAL_REQUEST;
1860                                sensebuffer->AdditionalSenseLength = 0x0A;
1861                                sensebuffer->AdditionalSenseCode = 0x20;
1862                                sensebuffer->Valid = 1;
1863                                retvalue = ARCMSR_MESSAGE_FAIL;
1864                        }
1865                        }
1866                        kfree(ver_addr);
1867                }
1868                break;
1869
1870        case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1871                uint8_t *pQbuffer = acb->rqbuffer;
1872                if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1873                        acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1874                        arcmsr_iop_message_read(acb);
1875                }
1876                acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1877                acb->rqbuf_firstindex = 0;
1878                acb->rqbuf_lastindex = 0;
1879                memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1880                if(acb->fw_flag == FW_DEADLOCK) {
1881                        pcmdmessagefld->cmdmessage.ReturnCode =
1882                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1883                }else{
1884                        pcmdmessagefld->cmdmessage.ReturnCode =
1885                        ARCMSR_MESSAGE_RETURNCODE_OK;
1886                }
1887                }
1888                break;
1889
1890        case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1891                uint8_t *pQbuffer = acb->wqbuffer;
1892                if(acb->fw_flag == FW_DEADLOCK) {
1893                        pcmdmessagefld->cmdmessage.ReturnCode =
1894                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1895                }else{
1896                        pcmdmessagefld->cmdmessage.ReturnCode =
1897                        ARCMSR_MESSAGE_RETURNCODE_OK;
1898                }
1899
1900                if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1901                        acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1902                        arcmsr_iop_message_read(acb);
1903                }
1904                acb->acb_flags |=
1905                        (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1906                                ACB_F_MESSAGE_WQBUFFER_READED);
1907                acb->wqbuf_firstindex = 0;
1908                acb->wqbuf_lastindex = 0;
1909                memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1910                }
1911                break;
1912
1913        case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1914                uint8_t *pQbuffer;
1915
1916                if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1917                        acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1918                        arcmsr_iop_message_read(acb);
1919                }
1920                acb->acb_flags |=
1921                        (ACB_F_MESSAGE_WQBUFFER_CLEARED
1922                        | ACB_F_MESSAGE_RQBUFFER_CLEARED
1923                        | ACB_F_MESSAGE_WQBUFFER_READED);
1924                acb->rqbuf_firstindex = 0;
1925                acb->rqbuf_lastindex = 0;
1926                acb->wqbuf_firstindex = 0;
1927                acb->wqbuf_lastindex = 0;
1928                pQbuffer = acb->rqbuffer;
1929                memset(pQbuffer, 0, sizeof(struct QBUFFER));
1930                pQbuffer = acb->wqbuffer;
1931                memset(pQbuffer, 0, sizeof(struct QBUFFER));
1932                if(acb->fw_flag == FW_DEADLOCK) {
1933                        pcmdmessagefld->cmdmessage.ReturnCode =
1934                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1935                }else{
1936                        pcmdmessagefld->cmdmessage.ReturnCode =
1937                        ARCMSR_MESSAGE_RETURNCODE_OK;
1938                }
1939                }
1940                break;
1941
1942        case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1943                if(acb->fw_flag == FW_DEADLOCK) {
1944                        pcmdmessagefld->cmdmessage.ReturnCode =
1945                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1946                }else{
1947                        pcmdmessagefld->cmdmessage.ReturnCode =
1948                        ARCMSR_MESSAGE_RETURNCODE_3F;
1949                }
1950                break;
1951                }
1952        case ARCMSR_MESSAGE_SAY_HELLO: {
1953                int8_t *hello_string = "Hello! I am ARCMSR";
1954                if(acb->fw_flag == FW_DEADLOCK) {
1955                        pcmdmessagefld->cmdmessage.ReturnCode =
1956                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1957                }else{
1958                        pcmdmessagefld->cmdmessage.ReturnCode =
1959                        ARCMSR_MESSAGE_RETURNCODE_OK;
1960                }
1961                memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1962                        , (int16_t)strlen(hello_string));
1963                }
1964                break;
1965
1966        case ARCMSR_MESSAGE_SAY_GOODBYE:
1967                if(acb->fw_flag == FW_DEADLOCK) {
1968                        pcmdmessagefld->cmdmessage.ReturnCode =
1969                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1970                }
1971                arcmsr_iop_parking(acb);
1972                break;
1973
1974        case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1975                if(acb->fw_flag == FW_DEADLOCK) {
1976                        pcmdmessagefld->cmdmessage.ReturnCode =
1977                        ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1978                }
1979                arcmsr_flush_adapter_cache(acb);
1980                break;
1981
1982        default:
1983                retvalue = ARCMSR_MESSAGE_FAIL;
1984        }
1985        message_out:
1986        sg = scsi_sglist(cmd);
1987        kunmap_atomic(buffer - sg->offset);
1988        return retvalue;
1989}
1990
1991static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1992{
1993        struct list_head *head = &acb->ccb_free_list;
1994        struct CommandControlBlock *ccb = NULL;
1995        unsigned long flags;
1996        spin_lock_irqsave(&acb->ccblist_lock, flags);
1997        if (!list_empty(head)) {
1998                ccb = list_entry(head->next, struct CommandControlBlock, list);
1999                list_del_init(&ccb->list);
2000        }else{

2001                spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2002                return 0;
2003        }
2004        spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2005        return ccb;
2006}
2007
2008static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2009                struct scsi_cmnd *cmd)
2010{
2011        switch (cmd->cmnd[0]) {
2012        case INQUIRY: {
2013                unsigned char inqdata[36];
2014                char *buffer;
2015                struct scatterlist *sg;
2016
2017                if (cmd->device->lun) {
2018                        cmd->result = (DID_TIME_OUT << 16);
2019                        cmd->scsi_done(cmd);
2020                        return;
2021                }
2022                inqdata[0] = TYPE_PROCESSOR;
2023                /* Periph Qualifier & Periph Dev Type */
2024                inqdata[1] = 0;
2025                /* rem media bit & Dev Type Modifier */
2026                inqdata[2] = 0;
2027                /* ISO, ECMA, & ANSI versions */
2028                inqdata[4] = 31;
2029                /* length of additional data */
2030                strncpy(&inqdata[8], "Areca   ", 8);
2031                /* Vendor Identification */
2032                strncpy(&inqdata[16], "RAID controller ", 16);
2033                /* Product Identification */
2034                strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2035
2036                sg = scsi_sglist(cmd);
2037                buffer = kmap_atomic(sg_page(sg)) + sg->offset;
2038
2039                memcpy(buffer, inqdata, sizeof(inqdata));
2040                sg = scsi_sglist(cmd);
2041                kunmap_atomic(buffer - sg->offset);
2042
2043                cmd->scsi_done(cmd);
2044        }
2045        break;
2046        case WRITE_BUFFER:
2047        case READ_BUFFER: {
2048                if (arcmsr_iop_message_xfer(acb, cmd))
2049                        cmd->result = (DID_ERROR << 16);
2050                cmd->scsi_done(cmd);
2051        }
2052        break;
2053        default:
2054                cmd->scsi_done(cmd);
2055        }
2056}
2057
2058static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2059        void (* done)(struct scsi_cmnd *))
2060{
2061        struct Scsi_Host *host = cmd->device->host;
2062        struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2063        struct CommandControlBlock *ccb;
2064        int target = cmd->device->id;
2065        int lun = cmd->device->lun;
2066        uint8_t scsicmd = cmd->cmnd[0];
2067        cmd->scsi_done = done;
2068        cmd->host_scribble = NULL;
2069        cmd->result = 0;
2070        if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2071                if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2072                        cmd->result = (DID_NO_CONNECT << 16);
2073                }
2074                cmd->scsi_done(cmd);
2075                return 0;
2076        }
2077        if (target == 16) {
2078                /* virtual device for iop message transfer */
2079                arcmsr_handle_virtual_command(acb, cmd);
2080                return 0;
2081        }
2082        if (atomic_read(&acb->ccboutstandingcount) >=
2083                        ARCMSR_MAX_OUTSTANDING_CMD)
2084                return SCSI_MLQUEUE_HOST_BUSY;
2085        ccb = arcmsr_get_freeccb(acb);
2086        if (!ccb)
2087                return SCSI_MLQUEUE_HOST_BUSY;
2088        if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2089                cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2090                cmd->scsi_done(cmd);
2091                return 0;
2092        }
2093        arcmsr_post_ccb(acb, ccb);
2094        return 0;
2095}
2096
2097static DEF_SCSI_QCMD(arcmsr_queue_command)
2098
2099static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2100{
2101        struct MessageUnit_A __iomem *reg = acb->pmuA;
2102        char *acb_firm_model = acb->firm_model;
2103        char *acb_firm_version = acb->firm_version;
2104        char *acb_device_map = acb->device_map;
2105        char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2106        char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2107        char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2108        int count;
2109        writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2110        if (!arcmsr_hba_wait_msgint_ready(acb)) {
2111                printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2112                        miscellaneous data' timeout \n", acb->host->host_no);
2113                return false;
2114        }
2115        count = 8;
2116        while (count){
2117                *acb_firm_model = readb(iop_firm_model);
2118                acb_firm_model++;
2119                iop_firm_model++;
2120                count--;
2121        }
2122
2123        count = 16;
2124        while (count){
2125                *acb_firm_version = readb(iop_firm_version);
2126                acb_firm_version++;
2127                iop_firm_version++;
2128                count--;
2129        }
2130
2131        count=16;
2132        while(count){
2133                *acb_device_map = readb(iop_device_map);
2134                acb_device_map++;
2135                iop_device_map++;
2136                count--;
2137        }
2138        printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n", 
2139                acb->host->host_no,
2140                acb->firm_version,
2141                acb->firm_model);
2142        acb->signature = readl(&reg->message_rwbuffer[0]);
2143        acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2144        acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2145        acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2146        acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2147        acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2148        return true;
2149}
2150static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2151{
2152        struct MessageUnit_B *reg = acb->pmuB;
2153        struct pci_dev *pdev = acb->pdev;
2154        void *dma_coherent;
2155        dma_addr_t dma_coherent_handle;
2156        char *acb_firm_model = acb->firm_model;
2157        char *acb_firm_version = acb->firm_version;
2158        char *acb_device_map = acb->device_map;
2159        char __iomem *iop_firm_model;
2160        /*firm_model,15,60-67*/
2161        char __iomem *iop_firm_version;
2162        /*firm_version,17,68-83*/
2163        char __iomem *iop_device_map;
2164        /*firm_version,21,84-99*/
2165        int count;
2166        dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2167        if (!dma_coherent){
2168                printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2169                return false;
2170        }
2171        acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2172        reg = (struct MessageUnit_B *)dma_coherent;
2173        acb->pmuB = reg;
2174        reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2175        reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2176        reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2177        reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2178        reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2179        reg->message_rbuffer =  (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2180        reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2181        iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2182        iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2183        iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2184
2185        writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2186        if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2187                printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2188                        miscellaneous data' timeout \n", acb->host->host_no);
2189                return false;
2190        }
2191        count = 8;
2192        while (count){
2193                *acb_firm_model = readb(iop_firm_model);
2194                acb_firm_model++;
2195                iop_firm_model++;
2196                count--;
2197        }
2198        count = 16;
2199        while (count){
2200                *acb_firm_version = readb(iop_firm_version);
2201                acb_firm_version++;
2202                iop_firm_version++;
2203                count--;
2204        }
2205
2206        count = 16;
2207        while(count){
2208                *acb_device_map = readb(iop_device_map);
2209                acb_device_map++;
2210                iop_device_map++;
2211                count--;
2212        }
2213        
2214        printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2215                acb->host->host_no,
2216                acb->firm_version,
2217                acb->firm_model);
2218
2219        acb->signature = readl(&reg->message_rwbuffer[1]);
2220        /*firm_signature,1,00-03*/
2221        acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2222        /*firm_request_len,1,04-07*/
2223        acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2224        /*firm_numbers_queue,2,08-11*/
2225        acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2226        /*firm_sdram_size,3,12-15*/
2227        acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2228        /*firm_ide_channels,4,16-19*/
2229        acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2230        /*firm_ide_channels,4,16-19*/
2231        return true;
2232}
2233
2234static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2235{
2236        uint32_t intmask_org, Index, firmware_state = 0;
2237        struct MessageUnit_C *reg = pACB->pmuC;
2238        char *acb_firm_model = pACB->firm_model;
2239        char *acb_firm_version = pACB->firm_version;
2240        char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2241        char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2242        int count;
2243        /* disable all outbound interrupt */
2244        intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2245        writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2246        /* wait firmware ready */
2247        do {
2248                firmware_state = readl(&reg->outbound_msgaddr1);
2249        } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2250        /* post "get config" instruction */
2251        writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2252        writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2253        /* wait message ready */
2254        for (Index = 0; Index < 2000; Index++) {
2255                if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2256                        writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2257                        break;
2258                }
2259                udelay(10);
2260        } /*max 1 seconds*/
2261        if (Index >= 2000) {
2262                printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2263                        miscellaneous data' timeout \n", pACB->host->host_no);
2264                return false;
2265        }
2266        count = 8;
2267        while (count) {
2268                *acb_firm_model = readb(iop_firm_model);
2269                acb_firm_model++;
2270                iop_firm_model++;
2271                count--;
2272        }
2273        count = 16;
2274        while (count) {
2275                *acb_firm_version = readb(iop_firm_version);
2276                acb_firm_version++;
2277                iop_firm_version++;
2278                count--;
2279        }
2280        printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2281                pACB->host->host_no,
2282                pACB->firm_version,
2283                pACB->firm_model);
2284        pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2285        pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2286        pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2287        pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2288        pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2289        /*all interrupt service will be enable at arcmsr_iop_init*/
2290        return true;
2291}
2292static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2293{
2294        if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2295                return arcmsr_get_hba_config(acb);
2296        else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2297                return arcmsr_get_hbb_config(acb);
2298        else
2299                return arcmsr_get_hbc_config(acb);
2300}
2301
2302static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2303        struct CommandControlBlock *poll_ccb)
2304{
2305        struct MessageUnit_A __iomem *reg = acb->pmuA;
2306        struct CommandControlBlock *ccb;
2307        struct ARCMSR_CDB *arcmsr_cdb;
2308        uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2309        int rtn;
2310        bool error;
2311        polling_hba_ccb_retry:
2312        poll_count++;
2313        outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2314        writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2315        while (1) {
2316                if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2317                        if (poll_ccb_done){
2318                                rtn = SUCCESS;
2319                                break;
2320                        }else {
2321                                msleep(25);
2322                                if (poll_count > 100){
2323                                        rtn = FAILED;
2324                                        break;
2325                                }
2326                                goto polling_hba_ccb_retry;
2327                        }
2328                }
2329                arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2330                ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2331                poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2332                if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2333                        if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2334                                printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2335                                        " poll command abort successfully \n"
2336                                        , acb->host->host_no
2337                                        , ccb->pcmd->device->id
2338                                        , ccb->pcmd->device->lun
2339                                        , ccb);
2340                                ccb->pcmd->result = DID_ABORT << 16;
2341                                arcmsr_ccb_complete(ccb);
2342                                continue;
2343                        }
2344                        printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2345                                " command done ccb = '0x%p'"
2346                                "ccboutstandingcount = %d \n"
2347                                , acb->host->host_no
2348                                , ccb
2349                                , atomic_read(&acb->ccboutstandingcount));
2350                        continue;
2351                }
2352                error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2353                arcmsr_report_ccb_state(acb, ccb, error);
2354        }
2355        return rtn;
2356}
2357
2358static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2359                                        struct CommandControlBlock *poll_ccb)
2360{
2361        struct MessageUnit_B *reg = acb->pmuB;
2362        struct ARCMSR_CDB *arcmsr_cdb;
2363        struct CommandControlBlock *ccb;
2364        uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2365        int index, rtn;
2366        bool error;
2367        polling_hbb_ccb_retry:
2368
2369        poll_count++;
2370        /* clear doorbell interrupt */
2371        writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2372        while(1){
2373                index = reg->doneq_index;
2374                if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2375                        if (poll_ccb_done){
2376                                rtn = SUCCESS;
2377                                break;
2378                        }else {
2379                                msleep(25);
2380                                if (poll_count > 100){
2381                                        rtn = FAILED;
2382                                        break;
2383                                }
2384                                goto polling_hbb_ccb_retry;
2385                        }
2386                }
2387                writel(0, &reg->done_qbuffer[index]);
2388                index++;
2389                /*if last index number set it to 0 */
2390                index %= ARCMSR_MAX_HBB_POSTQUEUE;
2391                reg->doneq_index = index;
2392                /* check if command done with no error*/
2393                arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2394                ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2395                poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2396                if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2397                        if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2398                                printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2399                                        " poll command abort successfully \n"
2400                                        ,acb->host->host_no
2401                                        ,ccb->pcmd->device->id
2402                                        ,ccb->pcmd->device->lun
2403                                        ,ccb);
2404                                ccb->pcmd->result = DID_ABORT << 16;
2405                                arcmsr_ccb_complete(ccb);
2406                                continue;
2407                        }
2408                        printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2409                                " command done ccb = '0x%p'"
2410                                "ccboutstandingcount = %d \n"
2411                                , acb->host->host_no
2412                                , ccb
2413                                , atomic_read(&acb->ccboutstandingcount));
2414                        continue;
2415                } 
2416                error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2417                arcmsr_report_ccb_state(acb, ccb, error);
2418        }
2419        return rtn;
2420}
2421
2422static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2423{
2424        struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2425        uint32_t flag_ccb, ccb_cdb_phy;
2426        struct ARCMSR_CDB *arcmsr_cdb;
2427        bool error;
2428        struct CommandControlBlock *pCCB;
2429        uint32_t poll_ccb_done = 0, poll_count = 0;
2430        int rtn;
2431polling_hbc_ccb_retry:
2432        poll_count++;
2433        while (1) {
2434                if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2435                        if (poll_ccb_done) {
2436                                rtn = SUCCESS;
2437                                break;
2438                        } else {
2439                                msleep(25);
2440                                if (poll_count > 100) {
2441                                        rtn = FAILED;
2442                                        break;
2443                                }
2444                                goto polling_hbc_ccb_retry;
2445                        }
2446                }
2447                flag_ccb = readl(&reg->outbound_queueport_low);
2448                ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2449                arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2450                pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2451                poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2452                /* check ifcommand done with no error*/
2453                if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2454                        if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2455                                printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2456                                        " poll command abort successfully \n"
2457                                        , acb->host->host_no
2458                                        , pCCB->pcmd->device->id
2459                                        , pCCB->pcmd->device->lun
2460                                        , pCCB);
2461                                        pCCB->pcmd->result = DID_ABORT << 16;
2462                                        arcmsr_ccb_complete(pCCB);
2463                                continue;
2464                        }
2465                        printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2466                                " command done ccb = '0x%p'"
2467                                "ccboutstandingcount = %d \n"
2468                                , acb->host->host_no
2469                                , pCCB
2470                                , atomic_read(&acb->ccboutstandingcount));
2471                        continue;
2472                }
2473                error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2474                arcmsr_report_ccb_state(acb, pCCB, error);
2475        }
2476        return rtn;
2477}
2478static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2479                                        struct CommandControlBlock *poll_ccb)
2480{
2481        int rtn = 0;
2482        switch (acb->adapter_type) {
2483
2484        case ACB_ADAPTER_TYPE_A: {
2485                rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2486                }
2487                break;
2488
2489        case ACB_ADAPTER_TYPE_B: {
2490                rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2491                }
2492                break;
2493        case ACB_ADAPTER_TYPE_C: {
2494                rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2495                }
2496        }
2497        return rtn;
2498}
2499
2500static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2501{
2502        uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2503        dma_addr_t dma_coherent_handle;
2504        /*
2505        ********************************************************************
2506        ** here we need to tell iop 331 our freeccb.HighPart
2507        ** if freeccb.HighPart is not zero
2508        ********************************************************************
2509        */
2510        dma_coherent_handle = acb->dma_coherent_handle;
2511        cdb_phyaddr = (uint32_t)(dma_coherent_handle);
2512        cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
2513        acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2514        /*
2515        ***********************************************************************
2516        **    if adapter type B, set window of "post command Q"
2517        ***********************************************************************
2518        */
2519        switch (acb->adapter_type) {
2520
2521        case ACB_ADAPTER_TYPE_A: {
2522                if (cdb_phyaddr_hi32 != 0) {
2523                        struct MessageUnit_A __iomem *reg = acb->pmuA;
2524                        uint32_t intmask_org;
2525                        intmask_org = arcmsr_disable_outbound_ints(acb);
2526                        writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2527                                                &reg->message_rwbuffer[0]);
2528                        writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2529                        writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2530                                                        &reg->inbound_msgaddr0);
2531                        if (!arcmsr_hba_wait_msgint_ready(acb)) {
2532                                printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2533                                part physical address timeout\n",
2534                                acb->host->host_no);
2535                                return 1;
2536                        }
2537                        arcmsr_enable_outbound_ints(acb, intmask_org);
2538                }
2539                }
2540                break;
2541
2542        case ACB_ADAPTER_TYPE_B: {
2543                unsigned long post_queue_phyaddr;
2544                uint32_t __iomem *rwbuffer;
2545
2546                struct MessageUnit_B *reg = acb->pmuB;
2547                uint32_t intmask_org;
2548                intmask_org = arcmsr_disable_outbound_ints(acb);
2549                reg->postq_index = 0;
2550                reg->doneq_index = 0;
2551                writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2552                if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2553                        printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2554                                acb->host->host_no);
2555                        return 1;
2556                }
2557                post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2558                rwbuffer = reg->message_rwbuffer;
2559                /* driver "set config" signature */
2560                writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2561                /* normal should be zero */
2562                writel(cdb_phyaddr_hi32, rwbuffer++);
2563                /* postQ size (256 + 8)*4        */
2564                writel(post_queue_phyaddr, rwbuffer++);
2565                /* doneQ size (256 + 8)*4        */
2566                writel(post_queue_phyaddr + 1056, rwbuffer++);
2567                /* ccb maxQ size must be --> [(256 + 8)*4]*/
2568                writel(1056, rwbuffer);
2569
2570                writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2571                if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2572                        printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2573                        timeout \n",acb->host->host_no);
2574                        return 1;
2575                }
2576                arcmsr_hbb_enable_driver_mode(acb);
2577                arcmsr_enable_outbound_ints(acb, intmask_org);
2578                }
2579                break;
2580        case ACB_ADAPTER_TYPE_C: {
2581                if (cdb_phyaddr_hi32 != 0) {
2582                        struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2583
2584                        printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
2585                                        acb->adapter_index, cdb_phyaddr_hi32);
2586                        writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2587                        writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2588                        writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2589                        writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2590                        if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2591                                printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2592                                timeout \n", acb->host->host_no);
2593                                return 1;
2594                        }
2595                }
2596                }
2597        }
2598        return 0;
2599}
2600
2601static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2602{
2603        uint32_t firmware_state = 0;
2604        switch (acb->adapter_type) {
2605
2606        case ACB_ADAPTER_TYPE_A: {
2607                struct MessageUnit_A __iomem *reg = acb->pmuA;
2608                do {
2609                        firmware_state = readl(&reg->outbound_msgaddr1);
2610                } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2611                }
2612                break;
2613
2614        case ACB_ADAPTER_TYPE_B: {
2615                struct MessageUnit_B *reg = acb->pmuB;
2616                do {
2617                        firmware_state = readl(reg->iop2drv_doorbell);
2618                } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2619                writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2620                }
2621                break;
2622        case ACB_ADAPTER_TYPE_C: {
2623                struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2624                do {
2625                        firmware_state = readl(&reg->outbound_msgaddr1);
2626                } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2627                }
2628        }
2629}
2630
2631static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2632{
2633        struct MessageUnit_A __iomem *reg = acb->pmuA;
2634        if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2635                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2636                return;
2637        } else {
2638                acb->fw_flag = FW_NORMAL;
2639                if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2640                        atomic_set(&acb->rq_map_token, 16);
2641                }
2642                atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2643                if (atomic_dec_and_test(&acb->rq_map_token)) {
2644                        mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2645                        return;
2646                }
2647                writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2648                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2649        }
2650        return;
2651}
2652
2653static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2654{
2655        struct MessageUnit_B __iomem *reg = acb->pmuB;
2656        if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2657                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2658                return;
2659        } else {
2660                acb->fw_flag = FW_NORMAL;
2661                if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2662                        atomic_set(&acb->rq_map_token, 16);
2663                }
2664                atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2665                if (atomic_dec_and_test(&acb->rq_map_token)) {
2666                        mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2667                        return;
2668                }
2669                writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2670                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2671        }
2672        return;
2673}
2674
2675static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2676{
2677        struct MessageUnit_C __iomem *reg = acb->pmuC;
2678        if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
2679                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2680                return;
2681        } else {
2682                acb->fw_flag = FW_NORMAL;
2683                if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2684                        atomic_set(&acb->rq_map_token, 16);
2685                }
2686                atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2687                if (atomic_dec_and_test(&acb->rq_map_token)) {
2688                        mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2689                        return;
2690                }
2691                writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2692                writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2693                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2694        }
2695        return;
2696}
2697
2698static void arcmsr_request_device_map(unsigned long pacb)
2699{
2700        struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2701        switch (acb->adapter_type) {
2702                case ACB_ADAPTER_TYPE_A: {
2703                        arcmsr_request_hba_device_map(acb);
2704                }
2705                break;
2706                case ACB_ADAPTER_TYPE_B: {
2707                        arcmsr_request_hbb_device_map(acb);
2708                }
2709                break;
2710                case ACB_ADAPTER_TYPE_C: {
2711                        arcmsr_request_hbc_device_map(acb);
2712                }
2713        }
2714}
2715
2716static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2717{
2718        struct MessageUnit_A __iomem *reg = acb->pmuA;
2719        acb->acb_flags |= ACB_F_MSG_START_BGRB;
2720        writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2721        if (!arcmsr_hba_wait_msgint_ready(acb)) {
2722                printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2723                                rebulid' timeout \n", acb->host->host_no);
2724        }
2725}
2726
2727static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2728{
2729        struct MessageUnit_B *reg = acb->pmuB;
2730        acb->acb_flags |= ACB_F_MSG_START_BGRB;
2731        writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2732        if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2733                printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2734                                rebulid' timeout \n",acb->host->host_no);
2735        }
2736}
2737
2738static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2739{
2740        struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2741        pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2742        writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2743        writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2744        if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2745                printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2746                                rebulid' timeout \n", pACB->host->host_no);
2747        }
2748        return;
2749}
2750static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2751{
2752        switch (acb->adapter_type) {
2753        case ACB_ADAPTER_TYPE_A:
2754                arcmsr_start_hba_bgrb(acb);
2755                break;
2756        case ACB_ADAPTER_TYPE_B:
2757                arcmsr_start_hbb_bgrb(acb);
2758                break;
2759        case ACB_ADAPTER_TYPE_C:
2760                arcmsr_start_hbc_bgrb(acb);
2761        }
2762}
2763
2764static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2765{
2766        switch (acb->adapter_type) {
2767        case ACB_ADAPTER_TYPE_A: {
2768                struct MessageUnit_A __iomem *reg = acb->pmuA;
2769                uint32_t outbound_doorbell;
2770                /* empty doorbell Qbuffer if door bell ringed */
2771                outbound_doorbell = readl(&reg->outbound_doorbell);
2772                /*clear doorbell interrupt */
2773                writel(outbound_doorbell, &reg->outbound_doorbell);
2774                writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2775                }
2776                break;
2777
2778        case ACB_ADAPTER_TYPE_B: {
2779                struct MessageUnit_B *reg = acb->pmuB;
2780                /*clear interrupt and message state*/
2781                writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2782                writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2783                /* let IOP know data has been read */
2784                }
2785                break;
2786        case ACB_ADAPTER_TYPE_C: {
2787                struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2788                uint32_t outbound_doorbell;
2789                /* empty doorbell Qbuffer if door bell ringed */
2790                outbound_doorbell = readl(&reg->outbound_doorbell);
2791                writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2792                writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2793                }
2794        }
2795}
2796
2797static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2798{
2799        switch (acb->adapter_type) {
2800        case ACB_ADAPTER_TYPE_A:
2801                return;
2802        case ACB_ADAPTER_TYPE_B:
2803                {
2804                        struct MessageUnit_B *reg = acb->pmuB;
2805                        writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2806                        if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2807                                printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2808                                return;
2809                        }
2810                }
2811                break;
2812        case ACB_ADAPTER_TYPE_C:
2813                return;
2814        }
2815        return;
2816}
2817
2818static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2819{
2820        uint8_t value[64];
2821        int i, count = 0;
2822        struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2823        struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2824
2825        /* backup pci config data */
2826        printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2827        for (i = 0; i < 64; i++) {
2828                pci_read_config_byte(acb->pdev, i, &value[i]);
2829        }
2830        /* hardware reset signal */
2831        if ((acb->dev_id == 0x1680)) {
2832                writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2833        } else if ((acb->dev_id == 0x1880)) {
2834                do {
2835                        count++;
2836                        writel(0xF, &pmuC->write_sequence);
2837                        writel(0x4, &pmuC->write_sequence);
2838                        writel(0xB, &pmuC->write_sequence);
2839                        writel(0x2, &pmuC->write_sequence);
2840                        writel(0x7, &pmuC->write_sequence);
2841                        writel(0xD, &pmuC->write_sequence);
2842                } while (((readl(&pmuC->host_diagnostic) & ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2843                writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2844        } else {
2845                pci_write_config_byte(acb->pdev, 0x84, 0x20);
2846        }
2847        msleep(2000);
2848        /* write back pci config data */
2849        for (i = 0; i < 64; i++) {
2850                pci_write_config_byte(acb->pdev, i, value[i]);
2851        }
2852        msleep(1000);
2853        return;
2854}
2855static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2856{
2857        uint32_t intmask_org;
2858        /* disable all outbound interrupt */
2859        intmask_org = arcmsr_disable_outbound_ints(acb);
2860        arcmsr_wait_firmware_ready(acb);
2861        arcmsr_iop_confirm(acb);
2862        /*start background rebuild*/
2863        arcmsr_start_adapter_bgrb(acb);
2864        /* empty doorbell Qbuffer if door bell ringed */
2865        arcmsr_clear_doorbell_queue_buffer(acb);
2866        arcmsr_enable_eoi_mode(acb);
2867        /* enable outbound Post Queue,outbound doorbell Interrupt */
2868        arcmsr_enable_outbound_ints(acb, intmask_org);
2869        acb->acb_flags |= ACB_F_IOP_INITED;
2870}
2871
2872static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2873{
2874        struct CommandControlBlock *ccb;
2875        uint32_t intmask_org;
2876        uint8_t rtnval = 0x00;
2877        int i = 0;
2878        unsigned long flags;
2879
2880        if (atomic_read(&acb->ccboutstandingcount) != 0) {
2881                /* disable all outbound interrupt */
2882                intmask_org = arcmsr_disable_outbound_ints(acb);
2883                /* talk to iop 331 outstanding command aborted */
2884                rtnval = arcmsr_abort_allcmd(acb);
2885                /* clear all outbound posted Q */
2886                arcmsr_done4abort_postqueue(acb);
2887                for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2888                        ccb = acb->pccb_pool[i];
2889                        if (ccb->startdone == ARCMSR_CCB_START) {
2890                                scsi_dma_unmap(ccb->pcmd);
2891                                ccb->startdone = ARCMSR_CCB_DONE;
2892                                ccb->ccb_flags = 0;
2893                                spin_lock_irqsave(&acb->ccblist_lock, flags);
2894                                list_add_tail(&ccb->list, &acb->ccb_free_list);
2895                                spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2896                        }
2897                }
2898                atomic_set(&acb->ccboutstandingcount, 0);
2899                /* enable all outbound interrupt */
2900                arcmsr_enable_outbound_ints(acb, intmask_org);
2901                return rtnval;
2902        }
2903        return rtnval;
2904}
2905
2906static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2907{
2908        struct AdapterControlBlock *acb;
2909        uint32_t intmask_org, outbound_doorbell;
2910        int retry_count = 0;
2911        int rtn = FAILED;
2912        acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2913        printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2914        acb->num_resets++;
2915
2916        switch(acb->adapter_type){
2917                case ACB_ADAPTER_TYPE_A:{
2918                        if (acb->acb_flags & ACB_F_BUS_RESET){
2919                                long timeout;
2920                                printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
2921                                timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2922                                if (timeout) {
2923                                        return SUCCESS;
2924                                }
2925                        }
2926                        acb->acb_flags |= ACB_F_BUS_RESET;
2927                        if (!arcmsr_iop_reset(acb)) {
2928                                struct MessageUnit_A __iomem *reg;
2929                                reg = acb->pmuA;
2930                                arcmsr_hardware_reset(acb);
2931                                acb->acb_flags &= ~ACB_F_IOP_INITED;
2932sleep_again:
2933                                ssleep(ARCMSR_SLEEPTIME);
2934                                if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2935                                        printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
2936                                        if (retry_count > ARCMSR_RETRYCOUNT) {
2937                                                acb->fw_flag = FW_DEADLOCK;
2938                                                printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
2939                                                return FAILED;
2940                                        }
2941                                        retry_count++;
2942                                        goto sleep_again;
2943                                }
2944                                acb->acb_flags |= ACB_F_IOP_INITED;
2945                                /* disable all outbound interrupt */
2946                                intmask_org = arcmsr_disable_outbound_ints(acb);
2947                                arcmsr_get_firmware_spec(acb);
2948                                arcmsr_start_adapter_bgrb(acb);
2949                                /* clear Qbuffer if door bell ringed */
2950                                outbound_doorbell = readl(&reg->outbound_doorbell);
2951                                writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2952                                writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2953                                /* enable outbound Post Queue,outbound doorbell Interrupt */
2954                                arcmsr_enable_outbound_ints(acb, intmask_org);
2955                                atomic_set(&acb->rq_map_token, 16);
2956                                atomic_set(&acb->ante_token_value, 16);
2957                                acb->fw_flag = FW_NORMAL;
2958                                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2959                                acb->acb_flags &= ~ACB_F_BUS_RESET;
2960                                rtn = SUCCESS;
2961                                printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
2962                        } else {
2963                                acb->acb_flags &= ~ACB_F_BUS_RESET;
2964                                atomic_set(&acb->rq_map_token, 16);
2965                                atomic_set(&acb->ante_token_value, 16);
2966                                acb->fw_flag = FW_NORMAL;
2967                                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2968                                rtn = SUCCESS;
2969                        }
2970                        break;
2971                }
2972                case ACB_ADAPTER_TYPE_B:{
2973                        acb->acb_flags |= ACB_F_BUS_RESET;
2974                        if (!arcmsr_iop_reset(acb)) {
2975                                acb->acb_flags &= ~ACB_F_BUS_RESET;
2976                                rtn = FAILED;
2977                        } else {
2978                                acb->acb_flags &= ~ACB_F_BUS_RESET;
2979                                atomic_set(&acb->rq_map_token, 16);
2980                                atomic_set(&acb->ante_token_value, 16);
2981                                acb->fw_flag = FW_NORMAL;
2982                                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2983                                rtn = SUCCESS;
2984                        }
2985                        break;
2986                }
2987                case ACB_ADAPTER_TYPE_C:{
2988                        if (acb->acb_flags & ACB_F_BUS_RESET) {
2989                                long timeout;
2990                                printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
2991                                timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2992                                if (timeout) {
2993                                        return SUCCESS;
2994                                }
2995                        }
2996                        acb->acb_flags |= ACB_F_BUS_RESET;
2997                        if (!arcmsr_iop_reset(acb)) {
2998                                struct MessageUnit_C __iomem *reg;
2999                                reg = acb->pmuC;
3000                                arcmsr_hardware_reset(acb);

3001                                acb->acb_flags &= ~ACB_F_IOP_INITED;
3002sleep:
3003                                ssleep(ARCMSR_SLEEPTIME);
3004                                if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3005                                        printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3006                                        if (retry_count > ARCMSR_RETRYCOUNT) {
3007                                                acb->fw_flag = FW_DEADLOCK;
3008                                                printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3009                                                return FAILED;
3010                                        }
3011                                        retry_count++;
3012                                        goto sleep;
3013                                }
3014                                acb->acb_flags |= ACB_F_IOP_INITED;
3015                                /* disable all outbound interrupt */
3016                                intmask_org = arcmsr_disable_outbound_ints(acb);
3017                                arcmsr_get_firmware_spec(acb);
3018                                arcmsr_start_adapter_bgrb(acb);
3019                                /* clear Qbuffer if door bell ringed */
3020                                outbound_doorbell = readl(&reg->outbound_doorbell);
3021                                writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3022                                writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3023                                /* enable outbound Post Queue,outbound doorbell Interrupt */
3024                                arcmsr_enable_outbound_ints(acb, intmask_org);
3025                                atomic_set(&acb->rq_map_token, 16);
3026                                atomic_set(&acb->ante_token_value, 16);
3027                                acb->fw_flag = FW_NORMAL;
3028                                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3029                                acb->acb_flags &= ~ACB_F_BUS_RESET;
3030                                rtn = SUCCESS;
3031                                printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3032                        } else {
3033                                acb->acb_flags &= ~ACB_F_BUS_RESET;
3034                                atomic_set(&acb->rq_map_token, 16);
3035                                atomic_set(&acb->ante_token_value, 16);
3036                                acb->fw_flag = FW_NORMAL;
3037                                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3038                                rtn = SUCCESS;
3039                        }
3040                        break;
3041                }
3042        }
3043        return rtn;
3044}
3045
3046static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3047                struct CommandControlBlock *ccb)
3048{
3049        int rtn;
3050        rtn = arcmsr_polling_ccbdone(acb, ccb);
3051        return rtn;
3052}
3053
3054static int arcmsr_abort(struct scsi_cmnd *cmd)
3055{
3056        struct AdapterControlBlock *acb =
3057                (struct AdapterControlBlock *)cmd->device->host->hostdata;
3058        int i = 0;
3059        int rtn = FAILED;
3060        printk(KERN_NOTICE
3061                "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3062                acb->host->host_no, cmd->device->id, cmd->device->lun);
3063        acb->acb_flags |= ACB_F_ABORT;
3064        acb->num_aborts++;
3065        /*
3066        ************************************************
3067        ** the all interrupt service routine is locked
3068        ** we need to handle it as soon as possible and exit
3069        ************************************************
3070        */
3071        if (!atomic_read(&acb->ccboutstandingcount))
3072                return rtn;
3073
3074        for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3075                struct CommandControlBlock *ccb = acb->pccb_pool[i];
3076                if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3077                        ccb->startdone = ARCMSR_CCB_ABORTED;
3078                        rtn = arcmsr_abort_one_cmd(acb, ccb);
3079                        break;
3080                }
3081        }
3082        acb->acb_flags &= ~ACB_F_ABORT;
3083        return rtn;
3084}
3085
3086static const char *arcmsr_info(struct Scsi_Host *host)
3087{
3088        struct AdapterControlBlock *acb =
3089                (struct AdapterControlBlock *) host->hostdata;
3090        static char buf[256];
3091        char *type;
3092        int raid6 = 1;
3093        switch (acb->pdev->device) {
3094        case PCI_DEVICE_ID_ARECA_1110:
3095        case PCI_DEVICE_ID_ARECA_1200:
3096        case PCI_DEVICE_ID_ARECA_1202:
3097        case PCI_DEVICE_ID_ARECA_1210:
3098                raid6 = 0;
3099                /*FALLTHRU*/
3100        case PCI_DEVICE_ID_ARECA_1120:
3101        case PCI_DEVICE_ID_ARECA_1130:
3102        case PCI_DEVICE_ID_ARECA_1160:
3103        case PCI_DEVICE_ID_ARECA_1170:
3104        case PCI_DEVICE_ID_ARECA_1201:
3105        case PCI_DEVICE_ID_ARECA_1220:
3106        case PCI_DEVICE_ID_ARECA_1230:
3107        case PCI_DEVICE_ID_ARECA_1260:
3108        case PCI_DEVICE_ID_ARECA_1270:
3109        case PCI_DEVICE_ID_ARECA_1280:
3110                type = "SATA";
3111                break;
3112        case PCI_DEVICE_ID_ARECA_1380:
3113        case PCI_DEVICE_ID_ARECA_1381:
3114        case PCI_DEVICE_ID_ARECA_1680:
3115        case PCI_DEVICE_ID_ARECA_1681:
3116        case PCI_DEVICE_ID_ARECA_1880:
3117                type = "SAS";
3118                break;
3119        default:
3120                type = "X-TYPE";
3121                break;
3122        }
3123        sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3124                        type, raid6 ? "( RAID6 capable)" : "",
3125                        ARCMSR_DRIVER_VERSION);
3126        return buf;
3127}
3128