drivers/scsi/arcmsr/arcmsr_hba.c

   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/system.h>
  65 #include <asm/uaccess.h>
  66 #include <scsi/scsi_host.h>
  67 #include <scsi/scsi.h>
  68 #include <scsi/scsi_cmnd.h>
  69 #include <scsi/scsi_tcq.h>
  70 #include <scsi/scsi_device.h>
  71 #include <scsi/scsi_transport.h>
  72 #include <scsi/scsicam.h>
  73 #include "arcmsr.h"
  74 MODULE_AUTHOR("Nick Cheng <support@areca.com.tw>");
  75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx/1880) SATA/SAS RAID Host Bus Adapter");
  76 MODULE_LICENSE("Dual BSD/GPL");
  77 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
  78 static int sleeptime = 10;
  79 static int retrycount = 12;
  80 wait_queue_head_t wait_q;
  81 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
  82                                         struct scsi_cmnd *cmd);
  83 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
  84 static int arcmsr_abort(struct scsi_cmnd *);
  85 static int arcmsr_bus_reset(struct scsi_cmnd *);
  86 static int arcmsr_bios_param(struct scsi_device *sdev,
  87                 struct block_device *bdev, sector_t capacity, int *info);
  88 static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
  89 static int arcmsr_probe(struct pci_dev *pdev,
  90                                 const struct pci_device_id *id);
  91 static void arcmsr_remove(struct pci_dev *pdev);
  92 static void arcmsr_shutdown(struct pci_dev *pdev);
  93 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  94 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  95 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
  96 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
  97 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
  98 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
  99 static void arcmsr_request_device_map(unsigned long pacb);
 100 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
 101 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
 102 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
 103 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
 104 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
 105 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
 106 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
 107 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
 108 static const char *arcmsr_info(struct Scsi_Host *);
 109 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 110 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
 111                                           int queue_depth, int reason)
 112 {
 113         if (reason != SCSI_QDEPTH_DEFAULT)
 114                 return -EOPNOTSUPP;
 115
 116         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 117                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 118         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 119         return queue_depth;
 120 }
 121
 122 static struct scsi_host_template arcmsr_scsi_host_template = {
 123         .module                 = THIS_MODULE,
 124         .name                   = "ARCMSR ARECA SATA/SAS RAID Controller"
 125                                 ARCMSR_DRIVER_VERSION,
 126         .info                   = arcmsr_info,
 127         .queuecommand           = arcmsr_queue_command,
 128         .eh_abort_handler               = arcmsr_abort,
 129         .eh_bus_reset_handler   = arcmsr_bus_reset,
 130         .bios_param             = arcmsr_bios_param,
 131         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 132         .can_queue              = ARCMSR_MAX_FREECCB_NUM,
 133         .this_id                        = ARCMSR_SCSI_INITIATOR_ID,
 134         .sg_tablesize                   = ARCMSR_DEFAULT_SG_ENTRIES,
 135         .max_sectors                    = ARCMSR_MAX_XFER_SECTORS_C,
 136         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 137         .use_clustering         = ENABLE_CLUSTERING,
 138         .shost_attrs            = arcmsr_host_attrs,
 139 };
 140 static struct pci_device_id arcmsr_device_id_table[] = {
 141         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 142         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 143         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 144         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 145         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
 146         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
 147         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
 148         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
 149         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 150         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 151         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
 152         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
 153         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
 154         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
 155         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
 156         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
 157         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
 158         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
 159         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)},
 160         {0, 0}, /* Terminating entry */
 161 };
 162 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 163 static struct pci_driver arcmsr_pci_driver = {
 164         .name                   = "arcmsr",
 165         .id_table                       = arcmsr_device_id_table,
 166         .probe                  = arcmsr_probe,
 167         .remove                 = arcmsr_remove,
 168         .shutdown               = arcmsr_shutdown,
 169 };
 170 /*
 171 ****************************************************************************
 172 ****************************************************************************
 173 */
 174 int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd)
 175 {
 176                 struct Scsi_Host *shost = NULL;
 177                 int i, isleep;
 178                 shost = cmd->device->host;
 179                 isleep = sleeptime / 10;
 180                 if (isleep > 0) {
 181                         for (i = 0; i < isleep; i++) {
 182                                 msleep(10000);
 183                         }
 184                 }
 185
 186                 isleep = sleeptime % 10;
 187                 if (isleep > 0) {
 188                         msleep(isleep*1000);
 189                 }
 190                 return 0;
 191 }
 192
 193 static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
 194 {
 195         switch (acb->adapter_type) {
 196         case ACB_ADAPTER_TYPE_A:
 197         case ACB_ADAPTER_TYPE_C:
 198                 break;
 199         case ACB_ADAPTER_TYPE_B:{
 200                 dma_free_coherent(&acb->pdev->dev,
 201                         sizeof(struct MessageUnit_B),
 202                         acb->pmuB, acb->dma_coherent_handle_hbb_mu);
 203         }
 204         }
 205 }
 206
 207 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 208 {
 209         struct pci_dev *pdev = acb->pdev;
 210         switch (acb->adapter_type){
 211         case ACB_ADAPTER_TYPE_A:{
 212                 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 213                 if (!acb->pmuA) {
 214                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 215                         return false;
 216                 }
 217                 break;
 218         }
 219         case ACB_ADAPTER_TYPE_B:{
 220                 void __iomem *mem_base0, *mem_base1;
 221                 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 222                 if (!mem_base0) {
 223                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 224                         return false;
 225                 }
 226                 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 227                 if (!mem_base1) {
 228                         iounmap(mem_base0);
 229                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 230                         return false;
 231                 }
 232                 acb->mem_base0 = mem_base0;
 233                 acb->mem_base1 = mem_base1;
 234                 break;
 235         }
 236         case ACB_ADAPTER_TYPE_C:{
 237                 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 238                 if (!acb->pmuC) {
 239                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 240                         return false;
 241                 }
 242                 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 243                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 244                         return true;
 245                 }
 246                 break;
 247         }
 248         }
 249         return true;
 250 }
 251
 252 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 253 {
 254         switch (acb->adapter_type) {
 255         case ACB_ADAPTER_TYPE_A:{
 256                 iounmap(acb->pmuA);
 257         }
 258         break;
 259         case ACB_ADAPTER_TYPE_B:{
 260                 iounmap(acb->mem_base0);
 261                 iounmap(acb->mem_base1);
 262         }
 263
 264         break;
 265         case ACB_ADAPTER_TYPE_C:{
 266                 iounmap(acb->pmuC);
 267         }
 268         }
 269 }
 270
 271 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 272 {
 273         irqreturn_t handle_state;
 274         struct AdapterControlBlock *acb = dev_id;
 275
 276         handle_state = arcmsr_interrupt(acb);
 277         return handle_state;
 278 }
 279
 280 static int arcmsr_bios_param(struct scsi_device *sdev,
 281                 struct block_device *bdev, sector_t capacity, int *geom)
 282 {
 283         int ret, heads, sectors, cylinders, total_capacity;
 284         unsigned char *buffer;/* return copy of block device's partition table */
 285
 286         buffer = scsi_bios_ptable(bdev);
 287         if (buffer) {
 288                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 289                 kfree(buffer);
 290                 if (ret != -1)
 291                         return ret;
 292         }
 293         total_capacity = capacity;
 294         heads = 64;
 295         sectors = 32;
 296         cylinders = total_capacity / (heads * sectors);
 297         if (cylinders > 1024) {
 298                 heads = 255;
 299                 sectors = 63;
 300                 cylinders = total_capacity / (heads * sectors);
 301         }
 302         geom[0] = heads;
 303         geom[1] = sectors;
 304         geom[2] = cylinders;
 305         return 0;
 306 }
 307
 308 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 309 {
 310         struct pci_dev *pdev = acb->pdev;
 311         u16 dev_id;
 312         pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 313         acb->dev_id = dev_id;
 314         switch (dev_id) {
 315         case 0x1880: {
 316                 acb->adapter_type = ACB_ADAPTER_TYPE_C;
 317                 }
 318                 break;
 319         case 0x1201: {
 320                 acb->adapter_type = ACB_ADAPTER_TYPE_B;
 321                 }
 322                 break;
 323
 324         default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
 325         }
 326 }
 327
 328 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 329 {
 330         struct MessageUnit_A __iomem *reg = acb->pmuA;
 331         uint32_t Index;
 332         uint8_t Retries = 0x00;
 333         do {
 334                 for (Index = 0; Index < 100; Index++) {
 335                         if (readl(&reg->outbound_intstatus) &
 336                                         ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 337                                 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 338                                         &reg->outbound_intstatus);
 339                                 return true;
 340                         }
 341                         msleep(10);
 342                 }/*max 1 seconds*/
 343
 344         } while (Retries++ < 20);/*max 20 sec*/
 345         return false;
 346 }
 347
 348 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
 349 {
 350         struct MessageUnit_B *reg = acb->pmuB;
 351         uint32_t Index;
 352         uint8_t Retries = 0x00;
 353         do {
 354                 for (Index = 0; Index < 100; Index++) {
 355                         if (readl(reg->iop2drv_doorbell)
 356                                 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 357                                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
 358                                         , reg->iop2drv_doorbell);
 359                                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
 360                                 return true;
 361                         }
 362                         msleep(10);
 363                 }/*max 1 seconds*/
 364
 365         } while (Retries++ < 20);/*max 20 sec*/
 366         return false;
 367 }
 368
 369 static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
 370 {
 371         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
 372         unsigned char Retries = 0x00;
 373         uint32_t Index;
 374         do {
 375                 for (Index = 0; Index < 100; Index++) {
 376                         if (readl(&phbcmu->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 377                                 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &phbcmu->outbound_doorbell_clear);/*clear interrupt*/
 378                                 return true;
 379                         }
 380                         /* one us delay */
 381                         msleep(10);
 382                 } /*max 1 seconds*/
 383         } while (Retries++ < 20); /*max 20 sec*/
 384         return false;
 385 }
 386 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 387 {
 388         struct MessageUnit_A __iomem *reg = acb->pmuA;
 389         int retry_count = 30;
 390         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 391         do {
 392                 if (arcmsr_hba_wait_msgint_ready(acb))
 393                         break;
 394                 else {
 395                         retry_count--;
 396                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 397                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 398                 }
 399         } while (retry_count != 0);
 400 }
 401
 402 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
 403 {
 404         struct MessageUnit_B *reg = acb->pmuB;
 405         int retry_count = 30;
 406         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 407         do {
 408                 if (arcmsr_hbb_wait_msgint_ready(acb))
 409                         break;
 410                 else {
 411                         retry_count--;
 412                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 413                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 414                 }
 415         } while (retry_count != 0);
 416 }
 417
 418 static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
 419 {
 420         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 421         int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 422         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 423         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 424         do {
 425                 if (arcmsr_hbc_wait_msgint_ready(pACB)) {
 426                         break;
 427                 } else {
 428                         retry_count--;
 429                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 430                         timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 431                 }
 432         } while (retry_count != 0);
 433         return;
 434 }
 435 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 436 {
 437         switch (acb->adapter_type) {
 438
 439         case ACB_ADAPTER_TYPE_A: {
 440                 arcmsr_flush_hba_cache(acb);
 441                 }
 442                 break;
 443
 444         case ACB_ADAPTER_TYPE_B: {
 445                 arcmsr_flush_hbb_cache(acb);
 446                 }
 447                 break;
 448         case ACB_ADAPTER_TYPE_C: {
 449                 arcmsr_flush_hbc_cache(acb);
 450                 }
 451         }
 452 }
 453
 454 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 455 {
 456         struct pci_dev *pdev = acb->pdev;
 457         void *dma_coherent;
 458         dma_addr_t dma_coherent_handle;
 459         struct CommandControlBlock *ccb_tmp;
 460         int i = 0, j = 0;
 461         dma_addr_t cdb_phyaddr;
 462         unsigned long roundup_ccbsize = 0, offset;
 463         unsigned long max_xfer_len;
 464         unsigned long max_sg_entrys;
 465         uint32_t  firm_config_version;
 466         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 467                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 468                         acb->devstate[i][j] = ARECA_RAID_GONE;
 469
 470         max_xfer_len = ARCMSR_MAX_XFER_LEN;
 471         max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 472         firm_config_version = acb->firm_cfg_version;
 473         if((firm_config_version & 0xFF) >= 3){
 474                 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 475                 max_sg_entrys = (max_xfer_len/4096);
 476         }
 477         acb->host->max_sectors = max_xfer_len/512;
 478         acb->host->sg_tablesize = max_sg_entrys;
 479         roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 480         acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM + 32;
 481         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 482         if(!dma_coherent){
 483                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no);
 484                 return -ENOMEM;
 485         }
 486         acb->dma_coherent = dma_coherent;
 487         acb->dma_coherent_handle = dma_coherent_handle;
 488         memset(dma_coherent, 0, acb->uncache_size);
 489         offset = roundup((unsigned long)dma_coherent, 32) - (unsigned long)dma_coherent;
 490         dma_coherent_handle = dma_coherent_handle + offset;
 491         dma_coherent = (struct CommandControlBlock *)dma_coherent + offset;
 492         ccb_tmp = dma_coherent;
 493         acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 494         for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 495                 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 496                 ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
 497                 acb->pccb_pool[i] = ccb_tmp;
 498                 ccb_tmp->acb = acb;
 499                 INIT_LIST_HEAD(&ccb_tmp->list);
 500                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 501                 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 502                 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 503         }
 504         return 0;
 505 }
 506
 507 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
 508 {
 509         struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 510         switch (acb->adapter_type) {
 511                 case ACB_ADAPTER_TYPE_A: {
 512
 513                         struct MessageUnit_A __iomem *reg  = acb->pmuA;
 514                         char *acb_dev_map = (char *)acb->device_map;
 515                         uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
 516                         char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
 517                         int target, lun;
 518                         struct scsi_device *psdev;
 519                         char diff;
 520
 521                         atomic_inc(&acb->rq_map_token);
 522                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 523                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 524                                         diff = (*acb_dev_map)^readb(devicemap);
 525                                         if (diff != 0) {
 526                                                 char temp;
 527                                                 *acb_dev_map = readb(devicemap);
 528                                                 temp =*acb_dev_map;
 529                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 530                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 531                                                                 scsi_add_device(acb->host, 0, target, lun);
 532                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 533                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 534                                                                 if (psdev != NULL ) {
 535                                                                         scsi_remove_device(psdev);
 536                                                                         scsi_device_put(psdev);
 537                                                                 }
 538                                                         }
 539                                                         temp >>= 1;
 540                                                         diff >>= 1;
 541                                                 }
 542                                         }
 543                                         devicemap++;
 544                                         acb_dev_map++;
 545                                 }
 546                         }
 547                         break;
 548                 }
 549
 550                 case ACB_ADAPTER_TYPE_B: {
 551                         struct MessageUnit_B *reg  = acb->pmuB;
 552                         char *acb_dev_map = (char *)acb->device_map;
 553                         uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
 554                         char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
 555                         int target, lun;
 556                         struct scsi_device *psdev;
 557                         char diff;
 558
 559                         atomic_inc(&acb->rq_map_token);
 560                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 561                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 562                                         diff = (*acb_dev_map)^readb(devicemap);
 563                                         if (diff != 0) {
 564                                                 char temp;
 565                                                 *acb_dev_map = readb(devicemap);
 566                                                 temp =*acb_dev_map;
 567                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 568                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 569                                                                 scsi_add_device(acb->host, 0, target, lun);
 570                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 571                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 572                                                                 if (psdev != NULL ) {
 573                                                                         scsi_remove_device(psdev);
 574                                                                         scsi_device_put(psdev);
 575                                                                 }
 576                                                         }
 577                                                         temp >>= 1;
 578                                                         diff >>= 1;
 579                                                 }
 580                                         }
 581                                         devicemap++;
 582                                         acb_dev_map++;
 583                                 }
 584                         }
 585                 }
 586                 break;
 587                 case ACB_ADAPTER_TYPE_C: {
 588                         struct MessageUnit_C *reg  = acb->pmuC;
 589                         char *acb_dev_map = (char *)acb->device_map;
 590                         uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 591                         char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 592                         int target, lun;
 593                         struct scsi_device *psdev;
 594                         char diff;
 595
 596                         atomic_inc(&acb->rq_map_token);
 597                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 598                                 for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
 599                                         diff = (*acb_dev_map)^readb(devicemap);
 600                                         if (diff != 0) {
 601                                                 char temp;
 602                                                 *acb_dev_map = readb(devicemap);
 603                                                 temp = *acb_dev_map;
 604                                                 for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 605                                                         if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
 606                                                                 scsi_add_device(acb->host, 0, target, lun);
 607                                                         } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 608                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 609                                                                 if (psdev != NULL) {
 610                                                                         scsi_remove_device(psdev);
 611                                                                         scsi_device_put(psdev);
 612                                                                 }
 613                                                         }
 614                                                         temp >>= 1;
 615                                                         diff >>= 1;
 616                                                 }
 617                                         }
 618                                         devicemap++;
 619                                         acb_dev_map++;
 620                                 }
 621                         }
 622                 }
 623         }
 624 }
 625
 626 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 627 {
 628         struct Scsi_Host *host;
 629         struct AdapterControlBlock *acb;
 630         uint8_t bus,dev_fun;
 631         int error;
 632         error = pci_enable_device(pdev);
 633         if(error){
 634                 return -ENODEV;
 635         }
 636         host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 637         if(!host){
 638                 goto pci_disable_dev;
 639         }
 640         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 641         if(error){
 642                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 643                 if(error){
 644                         printk(KERN_WARNING
 645                                "scsi%d: No suitable DMA mask available\n",
 646                                host->host_no);
 647                         goto scsi_host_release;
 648                 }
 649         }
 650         init_waitqueue_head(&wait_q);
 651         bus = pdev->bus->number;
 652         dev_fun = pdev->devfn;
 653         acb = (struct AdapterControlBlock *) host->hostdata;
 654         memset(acb,0,sizeof(struct AdapterControlBlock));
 655         acb->pdev = pdev;
 656         acb->host = host;
 657         host->max_lun = ARCMSR_MAX_TARGETLUN;
 658         host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 659         host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 660         host->can_queue = ARCMSR_MAX_FREECCB_NUM;       /* max simultaneous cmds */
 661         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 662         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 663         host->unique_id = (bus << 8) | dev_fun;
 664         pci_set_drvdata(pdev, host);
 665         pci_set_master(pdev);
 666         error = pci_request_regions(pdev, "arcmsr");
 667         if(error){
 668                 goto scsi_host_release;
 669         }
 670         spin_lock_init(&acb->eh_lock);
 671         spin_lock_init(&acb->ccblist_lock);
 672         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 673                         ACB_F_MESSAGE_RQBUFFER_CLEARED |
 674                         ACB_F_MESSAGE_WQBUFFER_READED);
 675         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 676         INIT_LIST_HEAD(&acb->ccb_free_list);
 677         arcmsr_define_adapter_type(acb);
 678         error = arcmsr_remap_pciregion(acb);
 679         if(!error){
 680                 goto pci_release_regs;
 681         }
 682         error = arcmsr_get_firmware_spec(acb);
 683         if(!error){
 684                 goto unmap_pci_region;
 685         }
 686         error = arcmsr_alloc_ccb_pool(acb);
 687         if(error){
 688                 goto free_hbb_mu;
 689         }
 690         arcmsr_iop_init(acb);
 691         error = scsi_add_host(host, &pdev->dev);
 692         if(error){
 693                 goto RAID_controller_stop;
 694         }
 695         error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
 696         if(error){
 697                 goto scsi_host_remove;
 698         }
 699         host->irq = pdev->irq;
 700         scsi_scan_host(host);
 701         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 702         atomic_set(&acb->rq_map_token, 16);
 703         atomic_set(&acb->ante_token_value, 16);
 704         acb->fw_flag = FW_NORMAL;
 705         init_timer(&acb->eternal_timer);
 706         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 707         acb->eternal_timer.data = (unsigned long) acb;
 708         acb->eternal_timer.function = &arcmsr_request_device_map;
 709         add_timer(&acb->eternal_timer);
 710         if(arcmsr_alloc_sysfs_attr(acb))
 711                 goto out_free_sysfs;
 712         return 0;
 713 out_free_sysfs:
 714 scsi_host_remove:
 715         scsi_remove_host(host);
 716 RAID_controller_stop:
 717         arcmsr_stop_adapter_bgrb(acb);
 718         arcmsr_flush_adapter_cache(acb);
 719         arcmsr_free_ccb_pool(acb);
 720 free_hbb_mu:
 721         arcmsr_free_hbb_mu(acb);
 722 unmap_pci_region:
 723         arcmsr_unmap_pciregion(acb);
 724 pci_release_regs:
 725         pci_release_regions(pdev);
 726 scsi_host_release:
 727         scsi_host_put(host);
 728 pci_disable_dev:
 729         pci_disable_device(pdev);
 730         return -ENODEV;
 731 }
 732
 733 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 734 {
 735         struct MessageUnit_A __iomem *reg = acb->pmuA;
 736         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 737         if (!arcmsr_hba_wait_msgint_ready(acb)) {
 738                 printk(KERN_NOTICE
 739                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 740                         , acb->host->host_no);
 741                 return false;
 742         }
 743         return true;
 744 }
 745
 746 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 747 {
 748         struct MessageUnit_B *reg = acb->pmuB;
 749
 750         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 751         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 752                 printk(KERN_NOTICE
 753                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 754                         , acb->host->host_no);
 755                 return false;
 756         }
 757         return true;
 758 }
 759 static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
 760 {
 761         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 762         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 763         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 764         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
 765                 printk(KERN_NOTICE
 766                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 767                         , pACB->host->host_no);
 768                 return false;
 769         }
 770         return true;
 771 }
 772 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 773 {
 774         uint8_t rtnval = 0;
 775         switch (acb->adapter_type) {
 776         case ACB_ADAPTER_TYPE_A: {
 777                 rtnval = arcmsr_abort_hba_allcmd(acb);
 778                 }
 779                 break;
 780
 781         case ACB_ADAPTER_TYPE_B: {
 782                 rtnval = arcmsr_abort_hbb_allcmd(acb);
 783                 }
 784                 break;
 785
 786         case ACB_ADAPTER_TYPE_C: {
 787                 rtnval = arcmsr_abort_hbc_allcmd(acb);
 788                 }
 789         }
 790         return rtnval;
 791 }
 792
 793 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
 794 {
 795         struct MessageUnit_B *reg = pacb->pmuB;
 796         writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
 797         if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
 798                 printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
 799                 return false;
 800         }
 801         return true;
 802 }
 803
 804 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 805 {
 806         struct scsi_cmnd *pcmd = ccb->pcmd;
 807
 808         scsi_dma_unmap(pcmd);
 809 }
 810
 811 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 812 {
 813         struct AdapterControlBlock *acb = ccb->acb;
 814         struct scsi_cmnd *pcmd = ccb->pcmd;
 815         unsigned long flags;
 816         atomic_dec(&acb->ccboutstandingcount);
 817         arcmsr_pci_unmap_dma(ccb);
 818         ccb->startdone = ARCMSR_CCB_DONE;
 819         spin_lock_irqsave(&acb->ccblist_lock, flags);
 820         list_add_tail(&ccb->list, &acb->ccb_free_list);
 821         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 822         pcmd->scsi_done(pcmd);
 823 }
 824
 825 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 826 {
 827
 828         struct scsi_cmnd *pcmd = ccb->pcmd;
 829         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 830         pcmd->result = DID_OK << 16;
 831         if (sensebuffer) {
 832                 int sense_data_length =
 833                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 834                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 835                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 836                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 837                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 838                 sensebuffer->Valid = 1;
 839         }
 840 }
 841
 842 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 843 {
 844         u32 orig_mask = 0;
 845         switch (acb->adapter_type) {
 846         case ACB_ADAPTER_TYPE_A : {
 847                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 848                 orig_mask = readl(&reg->outbound_intmask);
 849                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 850                                                 &reg->outbound_intmask);
 851                 }
 852                 break;
 853         case ACB_ADAPTER_TYPE_B : {
 854                 struct MessageUnit_B *reg = acb->pmuB;
 855                 orig_mask = readl(reg->iop2drv_doorbell_mask);
 856                 writel(0, reg->iop2drv_doorbell_mask);
 857                 }
 858                 break;
 859         case ACB_ADAPTER_TYPE_C:{
 860                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
 861                 /* disable all outbound interrupt */
 862                 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
 863                 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
 864                 }
 865                 break;
 866         }
 867         return orig_mask;
 868 }
 869
 870 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
 871                         struct CommandControlBlock *ccb, bool error)
 872 {
 873         uint8_t id, lun;
 874         id = ccb->pcmd->device->id;
 875         lun = ccb->pcmd->device->lun;
 876         if (!error) {
 877                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 878                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 879                 ccb->pcmd->result = DID_OK << 16;
 880                 arcmsr_ccb_complete(ccb);
 881         }else{
 882                 switch (ccb->arcmsr_cdb.DeviceStatus) {
 883                 case ARCMSR_DEV_SELECT_TIMEOUT: {
 884                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 885                         ccb->pcmd->result = DID_NO_CONNECT << 16;
 886                         arcmsr_ccb_complete(ccb);
 887                         }
 888                         break;
 889
 890                 case ARCMSR_DEV_ABORTED:
 891
 892                 case ARCMSR_DEV_INIT_FAIL: {
 893                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 894                         ccb->pcmd->result = DID_BAD_TARGET << 16;
 895                         arcmsr_ccb_complete(ccb);
 896                         }
 897                         break;
 898
 899                 case ARCMSR_DEV_CHECK_CONDITION: {
 900                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 901                         arcmsr_report_sense_info(ccb);
 902                         arcmsr_ccb_complete(ccb);
 903                         }
 904                         break;
 905
 906                 default:
 907                         printk(KERN_NOTICE
 908                                 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
 909                                 but got unknown DeviceStatus = 0x%x \n"
 910                                 , acb->host->host_no
 911                                 , id
 912                                 , lun
 913                                 , ccb->arcmsr_cdb.DeviceStatus);
 914                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 915                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
 916                                 arcmsr_ccb_complete(ccb);
 917                         break;
 918                 }
 919         }
 920 }
 921
 922 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
 923 {
 924         int id, lun;
 925         if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
 926                 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
 927                         struct scsi_cmnd *abortcmd = pCCB->pcmd;
 928                         if (abortcmd) {
 929                                 id = abortcmd->device->id;
 930                                 lun = abortcmd->device->lun;
 931                                 abortcmd->result |= DID_ABORT << 16;
 932                                 arcmsr_ccb_complete(pCCB);
 933                                 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
 934                                 acb->host->host_no, pCCB);
 935                         }
 936                         return;
 937                 }
 938                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 939                                 done acb = '0x%p'"
 940                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
 941                                 " ccboutstandingcount = %d \n"
 942                                 , acb->host->host_no
 943                                 , acb
 944                                 , pCCB
 945                                 , pCCB->acb
 946                                 , pCCB->startdone
 947                                 , atomic_read(&acb->ccboutstandingcount));
 948                   return;
 949         }
 950         arcmsr_report_ccb_state(acb, pCCB, error);
 951 }
 952
 953 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 954 {
 955         int i = 0;
 956         uint32_t flag_ccb;
 957         struct ARCMSR_CDB *pARCMSR_CDB;
 958         bool error;
 959         struct CommandControlBlock *pCCB;
 960         switch (acb->adapter_type) {
 961
 962         case ACB_ADAPTER_TYPE_A: {
 963                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 964                 uint32_t outbound_intstatus;
 965                 outbound_intstatus = readl(&reg->outbound_intstatus) &
 966                                         acb->outbound_int_enable;
 967                 /*clear and abort all outbound posted Q*/
 968                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
 969                 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 970                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 971                         pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
 972                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 973                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 974                         arcmsr_drain_donequeue(acb, pCCB, error);
 975                 }
 976                 }
 977                 break;
 978
 979         case ACB_ADAPTER_TYPE_B: {
 980                 struct MessageUnit_B *reg = acb->pmuB;
 981                 /*clear all outbound posted Q*/
 982                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
 983                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 984                         if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 985                                 writel(0, &reg->done_qbuffer[i]);
 986                                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
 987                                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 988                                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 989                                 arcmsr_drain_donequeue(acb, pCCB, error);
 990                         }
 991                         reg->post_qbuffer[i] = 0;
 992                 }
 993                 reg->doneq_index = 0;
 994                 reg->postq_index = 0;
 995                 }
 996                 break;
 997         case ACB_ADAPTER_TYPE_C: {
 998                 struct MessageUnit_C *reg = acb->pmuC;
 999                 struct  ARCMSR_CDB *pARCMSR_CDB;
1000                 uint32_t flag_ccb, ccb_cdb_phy;
1001                 bool error;
1002                 struct CommandControlBlock *pCCB;
1003                 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1004                         /*need to do*/
1005                         flag_ccb = readl(&reg->outbound_queueport_low);
1006                         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1007                         pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
1008                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1009                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1010                         arcmsr_drain_donequeue(acb, pCCB, error);
1011                 }
1012         }
1013         }
1014 }
1015 static void arcmsr_remove(struct pci_dev *pdev)
1016 {
1017         struct Scsi_Host *host = pci_get_drvdata(pdev);
1018         struct AdapterControlBlock *acb =
1019                 (struct AdapterControlBlock *) host->hostdata;
1020         int poll_count = 0;
1021         arcmsr_free_sysfs_attr(acb);
1022         scsi_remove_host(host);
1023         flush_work_sync(&acb->arcmsr_do_message_isr_bh);
1024         del_timer_sync(&acb->eternal_timer);
1025         arcmsr_disable_outbound_ints(acb);
1026         arcmsr_stop_adapter_bgrb(acb);
1027         arcmsr_flush_adapter_cache(acb);
1028         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1029         acb->acb_flags &= ~ACB_F_IOP_INITED;
1030
1031         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1032                 if (!atomic_read(&acb->ccboutstandingcount))
1033                         break;
1034                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1035                 msleep(25);
1036         }
1037
1038         if (atomic_read(&acb->ccboutstandingcount)) {
1039                 int i;
1040
1041                 arcmsr_abort_allcmd(acb);
1042                 arcmsr_done4abort_postqueue(acb);
1043                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1044                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
1045                         if (ccb->startdone == ARCMSR_CCB_START) {
1046                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1047                                 ccb->pcmd->result = DID_ABORT << 16;
1048                                 arcmsr_ccb_complete(ccb);
1049                         }
1050                 }
1051         }
1052         free_irq(pdev->irq, acb);
1053         arcmsr_free_ccb_pool(acb);
1054         arcmsr_free_hbb_mu(acb);
1055         arcmsr_unmap_pciregion(acb);
1056         pci_release_regions(pdev);
1057         scsi_host_put(host);
1058         pci_disable_device(pdev);
1059         pci_set_drvdata(pdev, NULL);
1060 }
1061
1062 static void arcmsr_shutdown(struct pci_dev *pdev)
1063 {
1064         struct Scsi_Host *host = pci_get_drvdata(pdev);
1065         struct AdapterControlBlock *acb =
1066                 (struct AdapterControlBlock *)host->hostdata;
1067         del_timer_sync(&acb->eternal_timer);
1068         arcmsr_disable_outbound_ints(acb);
1069         flush_work_sync(&acb->arcmsr_do_message_isr_bh);
1070         arcmsr_stop_adapter_bgrb(acb);
1071         arcmsr_flush_adapter_cache(acb);
1072 }
1073
1074 static int arcmsr_module_init(void)
1075 {
1076         int error = 0;
1077         error = pci_register_driver(&arcmsr_pci_driver);
1078         return error;
1079 }
1080
1081 static void arcmsr_module_exit(void)
1082 {
1083         pci_unregister_driver(&arcmsr_pci_driver);
1084 }
1085 module_init(arcmsr_module_init);
1086 module_exit(arcmsr_module_exit);
1087
1088 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1089                                                 u32 intmask_org)
1090 {
1091         u32 mask;
1092         switch (acb->adapter_type) {
1093
1094         case ACB_ADAPTER_TYPE_A: {
1095                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1096                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1097                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1098                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1099                 writel(mask, &reg->outbound_intmask);
1100                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1101                 }
1102                 break;
1103
1104         case ACB_ADAPTER_TYPE_B: {
1105                 struct MessageUnit_B *reg = acb->pmuB;
1106                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1107                         ARCMSR_IOP2DRV_DATA_READ_OK |
1108                         ARCMSR_IOP2DRV_CDB_DONE |
1109                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1110                 writel(mask, reg->iop2drv_doorbell_mask);
1111                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1112                 }
1113                 break;
1114         case ACB_ADAPTER_TYPE_C: {
1115                 struct MessageUnit_C *reg = acb->pmuC;
1116                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1117                 writel(intmask_org & mask, &reg->host_int_mask);
1118                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1119                 }
1120         }
1121 }
1122
1123 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1124         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1125 {
1126         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1127         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1128         __le32 address_lo, address_hi;
1129         int arccdbsize = 0x30;
1130         __le32 length = 0;
1131         int i;
1132         struct scatterlist *sg;
1133         int nseg;
1134         ccb->pcmd = pcmd;
1135         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1136         arcmsr_cdb->TargetID = pcmd->device->id;
1137         arcmsr_cdb->LUN = pcmd->device->lun;
1138         arcmsr_cdb->Function = 1;
1139         arcmsr_cdb->Context = 0;
1140         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1141
1142         nseg = scsi_dma_map(pcmd);
1143         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1144                 return FAILED;
1145         scsi_for_each_sg(pcmd, sg, nseg, i) {
1146                 /* Get the physical address of the current data pointer */
1147                 length = cpu_to_le32(sg_dma_len(sg));
1148                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1149                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1150                 if (address_hi == 0) {
1151                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1152
1153                         pdma_sg->address = address_lo;
1154                         pdma_sg->length = length;
1155                         psge += sizeof (struct SG32ENTRY);
1156                         arccdbsize += sizeof (struct SG32ENTRY);
1157                 } else {
1158                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1159
1160                         pdma_sg->addresshigh = address_hi;
1161                         pdma_sg->address = address_lo;
1162                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1163                         psge += sizeof (struct SG64ENTRY);
1164                         arccdbsize += sizeof (struct SG64ENTRY);
1165                 }
1166         }
1167         arcmsr_cdb->sgcount = (uint8_t)nseg;
1168         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1169         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1170         if ( arccdbsize > 256)
1171                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1172         if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1173                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1174         ccb->arc_cdb_size = arccdbsize;
1175         return SUCCESS;
1176 }
1177
1178 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1179 {
1180         uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1181         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1182         atomic_inc(&acb->ccboutstandingcount);
1183         ccb->startdone = ARCMSR_CCB_START;
1184         switch (acb->adapter_type) {
1185         case ACB_ADAPTER_TYPE_A: {
1186                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1187
1188                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1189                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1190                         &reg->inbound_queueport);
1191                 else {
1192                                 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1193                 }
1194                 }
1195                 break;
1196
1197         case ACB_ADAPTER_TYPE_B: {
1198                 struct MessageUnit_B *reg = acb->pmuB;
1199                 uint32_t ending_index, index = reg->postq_index;
1200
1201                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1202                 writel(0, &reg->post_qbuffer[ending_index]);
1203                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1204                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1205                                                  &reg->post_qbuffer[index]);
1206                 } else {
1207                         writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1208                 }
1209                 index++;
1210                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1211                 reg->postq_index = index;
1212                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1213                 }
1214                 break;
1215         case ACB_ADAPTER_TYPE_C: {
1216                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1217                 uint32_t ccb_post_stamp, arc_cdb_size;
1218
1219                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1220                 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1221                 if (acb->cdb_phyaddr_hi32) {
1222                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1223                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1224                 } else {
1225                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1226                 }
1227                 }
1228         }
1229 }
1230
1231 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1232 {
1233         struct MessageUnit_A __iomem *reg = acb->pmuA;
1234         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1235         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1236         if (!arcmsr_hba_wait_msgint_ready(acb)) {
1237                 printk(KERN_NOTICE
1238                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1239                         , acb->host->host_no);
1240         }
1241 }
1242
1243 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1244 {
1245         struct MessageUnit_B *reg = acb->pmuB;
1246         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1247         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1248
1249         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1250                 printk(KERN_NOTICE
1251                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1252                         , acb->host->host_no);
1253         }
1254 }
1255
1256 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1257 {
1258         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1259         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1260         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1261         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1262         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1263                 printk(KERN_NOTICE
1264                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1265                         , pACB->host->host_no);
1266         }
1267         return;
1268 }
1269 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1270 {
1271         switch (acb->adapter_type) {
1272         case ACB_ADAPTER_TYPE_A: {
1273                 arcmsr_stop_hba_bgrb(acb);
1274                 }
1275                 break;
1276
1277         case ACB_ADAPTER_TYPE_B: {
1278                 arcmsr_stop_hbb_bgrb(acb);
1279                 }
1280                 break;
1281         case ACB_ADAPTER_TYPE_C: {
1282                 arcmsr_stop_hbc_bgrb(acb);
1283                 }
1284         }
1285 }
1286
1287 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1288 {
1289         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1290 }
1291
1292 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1293 {
1294         switch (acb->adapter_type) {
1295         case ACB_ADAPTER_TYPE_A: {
1296                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1297                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1298                 }
1299                 break;
1300
1301         case ACB_ADAPTER_TYPE_B: {
1302                 struct MessageUnit_B *reg = acb->pmuB;
1303                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1304                 }
1305                 break;
1306         case ACB_ADAPTER_TYPE_C: {
1307                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1308                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1309                 }
1310         }
1311 }
1312
1313 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1314 {
1315         switch (acb->adapter_type) {
1316         case ACB_ADAPTER_TYPE_A: {
1317                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1318                 /*
1319                 ** push inbound doorbell tell iop, driver data write ok
1320                 ** and wait reply on next hwinterrupt for next Qbuffer post
1321                 */
1322                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1323                 }
1324                 break;
1325
1326         case ACB_ADAPTER_TYPE_B: {
1327                 struct MessageUnit_B *reg = acb->pmuB;
1328                 /*
1329                 ** push inbound doorbell tell iop, driver data write ok
1330                 ** and wait reply on next hwinterrupt for next Qbuffer post
1331                 */
1332                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1333                 }
1334                 break;
1335         case ACB_ADAPTER_TYPE_C: {
1336                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1337                 /*
1338                 ** push inbound doorbell tell iop, driver data write ok
1339                 ** and wait reply on next hwinterrupt for next Qbuffer post
1340                 */
1341                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1342                 }
1343                 break;
1344         }
1345 }
1346
1347 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1348 {
1349         struct QBUFFER __iomem *qbuffer = NULL;
1350         switch (acb->adapter_type) {
1351
1352         case ACB_ADAPTER_TYPE_A: {
1353                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1354                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1355                 }
1356                 break;
1357
1358         case ACB_ADAPTER_TYPE_B: {
1359                 struct MessageUnit_B *reg = acb->pmuB;
1360                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1361                 }
1362                 break;
1363         case ACB_ADAPTER_TYPE_C: {
1364                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1365                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1366                 }
1367         }
1368         return qbuffer;
1369 }
1370
1371 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1372 {
1373         struct QBUFFER __iomem *pqbuffer = NULL;
1374         switch (acb->adapter_type) {
1375
1376         case ACB_ADAPTER_TYPE_A: {
1377                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1378                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1379                 }
1380                 break;
1381
1382         case ACB_ADAPTER_TYPE_B: {
1383                 struct MessageUnit_B  *reg = acb->pmuB;
1384                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1385                 }
1386                 break;
1387         case ACB_ADAPTER_TYPE_C: {
1388                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1389                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1390         }
1391
1392         }
1393         return pqbuffer;
1394 }
1395
1396 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1397 {
1398         struct QBUFFER __iomem *prbuffer;
1399         struct QBUFFER *pQbuffer;
1400         uint8_t __iomem *iop_data;
1401         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1402         rqbuf_lastindex = acb->rqbuf_lastindex;
1403         rqbuf_firstindex = acb->rqbuf_firstindex;
1404         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1405         iop_data = (uint8_t __iomem *)prbuffer->data;
1406         iop_len = prbuffer->data_len;
1407         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1408
1409         if (my_empty_len >= iop_len)
1410         {
1411                 while (iop_len > 0) {
1412                         pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1413                         memcpy(pQbuffer, iop_data, 1);
1414                         rqbuf_lastindex++;
1415                         rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1416                         iop_data++;
1417                         iop_len--;
1418                 }
1419                 acb->rqbuf_lastindex = rqbuf_lastindex;
1420                 arcmsr_iop_message_read(acb);
1421         }
1422
1423         else {
1424                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1425         }
1426 }
1427
1428 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1429 {
1430         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1431         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1432                 uint8_t *pQbuffer;
1433                 struct QBUFFER __iomem *pwbuffer;
1434                 uint8_t __iomem *iop_data;
1435                 int32_t allxfer_len = 0;
1436
1437                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1438                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1439                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1440
1441                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1442                                                         (allxfer_len < 124)) {
1443                         pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1444                         memcpy(iop_data, pQbuffer, 1);
1445                         acb->wqbuf_firstindex++;
1446                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1447                         iop_data++;
1448                         allxfer_len++;
1449                 }
1450                 pwbuffer->data_len = allxfer_len;
1451
1452                 arcmsr_iop_message_wrote(acb);
1453         }
1454
1455         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1456                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1457         }
1458 }
1459
1460 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1461 {
1462         uint32_t outbound_doorbell;
1463         struct MessageUnit_A __iomem *reg = acb->pmuA;
1464         outbound_doorbell = readl(&reg->outbound_doorbell);
1465         writel(outbound_doorbell, &reg->outbound_doorbell);
1466         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1467                 arcmsr_iop2drv_data_wrote_handle(acb);
1468         }
1469
1470         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1471                 arcmsr_iop2drv_data_read_handle(acb);
1472         }
1473 }
1474 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1475 {
1476         uint32_t outbound_doorbell;
1477         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1478         /*
1479         *******************************************************************
1480         **  Maybe here we need to check wrqbuffer_lock is lock or not
1481         **  DOORBELL: din! don!
1482         **  check if there are any mail need to pack from firmware
1483         *******************************************************************
1484         */
1485         outbound_doorbell = readl(&reg->outbound_doorbell);
1486         writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1487         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1488                 arcmsr_iop2drv_data_wrote_handle(pACB);
1489         }
1490         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1491                 arcmsr_iop2drv_data_read_handle(pACB);
1492         }
1493         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1494                 arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
1495         }
1496         return;
1497 }
1498 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1499 {
1500         uint32_t flag_ccb;
1501         struct MessageUnit_A __iomem *reg = acb->pmuA;
1502         struct ARCMSR_CDB *pARCMSR_CDB;
1503         struct CommandControlBlock *pCCB;
1504         bool error;
1505         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1506                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1507                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1508                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1509                 arcmsr_drain_donequeue(acb, pCCB, error);
1510         }
1511 }
1512 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1513 {
1514         uint32_t index;
1515         uint32_t flag_ccb;
1516         struct MessageUnit_B *reg = acb->pmuB;
1517         struct ARCMSR_CDB *pARCMSR_CDB;
1518         struct CommandControlBlock *pCCB;
1519         bool error;
1520         index = reg->doneq_index;
1521         while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1522                 writel(0, &reg->done_qbuffer[index]);
1523                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1524                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1525                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1526                 arcmsr_drain_donequeue(acb, pCCB, error);
1527                 index++;
1528                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1529                 reg->doneq_index = index;
1530         }
1531 }
1532
1533 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1534 {
1535         struct MessageUnit_C *phbcmu;
1536         struct ARCMSR_CDB *arcmsr_cdb;
1537         struct CommandControlBlock *ccb;
1538         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1539         int error;
1540
1541         phbcmu = (struct MessageUnit_C *)acb->pmuC;
1542         /* areca cdb command done */
1543         /* Use correct offset and size for syncing */
1544
1545         while (readl(&phbcmu->host_int_status) &
1546         ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1547         /* check if command done with no error*/
1548         flag_ccb = readl(&phbcmu->outbound_queueport_low);
1549         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1550         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1551         ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1552         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1553         /* check if command done with no error */
1554         arcmsr_drain_donequeue(acb, ccb, error);
1555         if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1556                 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1557                 break;
1558         }
1559         throttling++;
1560         }
1561 }
1562 /*
1563 **********************************************************************************
1564 ** Handle a message interrupt
1565 **
1566 ** The only message interrupt we expect is in response to a query for the current adapter config.
1567 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1568 **********************************************************************************
1569 */
1570 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1571 {
1572         struct MessageUnit_A *reg  = acb->pmuA;
1573         /*clear interrupt and message state*/
1574         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1575         schedule_work(&acb->arcmsr_do_message_isr_bh);
1576 }
1577 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1578 {
1579         struct MessageUnit_B *reg  = acb->pmuB;
1580
1581         /*clear interrupt and message state*/
1582         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1583         schedule_work(&acb->arcmsr_do_message_isr_bh);
1584 }
1585 /*
1586 **********************************************************************************
1587 ** Handle a message interrupt
1588 **
1589 ** The only message interrupt we expect is in response to a query for the
1590 ** current adapter config.
1591 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1592 **********************************************************************************
1593 */
1594 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1595 {
1596         struct MessageUnit_C *reg  = acb->pmuC;
1597         /*clear interrupt and message state*/
1598         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1599         schedule_work(&acb->arcmsr_do_message_isr_bh);
1600 }
1601
1602 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1603 {
1604         uint32_t outbound_intstatus;
1605         struct MessageUnit_A __iomem *reg = acb->pmuA;
1606         outbound_intstatus = readl(&reg->outbound_intstatus) &
1607                 acb->outbound_int_enable;
1608         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1609                 return 1;
1610         }
1611         writel(outbound_intstatus, &reg->outbound_intstatus);
1612         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1613                 arcmsr_hba_doorbell_isr(acb);
1614         }
1615         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1616                 arcmsr_hba_postqueue_isr(acb);
1617         }
1618         if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)        {
1619                 /* messenger of "driver to iop commands" */
1620                 arcmsr_hba_message_isr(acb);
1621         }
1622         return 0;
1623 }
1624
1625 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1626 {
1627         uint32_t outbound_doorbell;
1628         struct MessageUnit_B *reg = acb->pmuB;
1629         outbound_doorbell = readl(reg->iop2drv_doorbell) &
1630                                 acb->outbound_int_enable;
1631         if (!outbound_doorbell)
1632                 return 1;
1633
1634         writel(~outbound_doorbell, reg->iop2drv_doorbell);
1635         /*in case the last action of doorbell interrupt clearance is cached,
1636         this action can push HW to write down the clear bit*/
1637         readl(reg->iop2drv_doorbell);
1638         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1639         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1640                 arcmsr_iop2drv_data_wrote_handle(acb);
1641         }
1642         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1643                 arcmsr_iop2drv_data_read_handle(acb);
1644         }
1645         if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1646                 arcmsr_hbb_postqueue_isr(acb);
1647         }
1648         if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1649                 /* messenger of "driver to iop commands" */
1650                 arcmsr_hbb_message_isr(acb);
1651         }
1652         return 0;
1653 }
1654
1655 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1656 {
1657         uint32_t host_interrupt_status;
1658         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1659         /*
1660         *********************************************
1661         **   check outbound intstatus
1662         *********************************************
1663         */
1664         host_interrupt_status = readl(&phbcmu->host_int_status);
1665         if (!host_interrupt_status) {
1666                 /*it must be share irq*/
1667                 return 1;
1668         }
1669         /* MU ioctl transfer doorbell interrupts*/
1670         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1671                 arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
1672         }
1673         /* MU post queue interrupts*/
1674         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1675                 arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
1676         }
1677         return 0;
1678 }
1679 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1680 {
1681         switch (acb->adapter_type) {
1682         case ACB_ADAPTER_TYPE_A: {
1683                 if (arcmsr_handle_hba_isr(acb)) {
1684                         return IRQ_NONE;
1685                 }
1686                 }
1687                 break;
1688
1689         case ACB_ADAPTER_TYPE_B: {
1690                 if (arcmsr_handle_hbb_isr(acb)) {
1691                         return IRQ_NONE;
1692                 }
1693                 }
1694                 break;
1695          case ACB_ADAPTER_TYPE_C: {
1696                 if (arcmsr_handle_hbc_isr(acb)) {
1697                         return IRQ_NONE;
1698                 }
1699                 }
1700         }
1701         return IRQ_HANDLED;
1702 }
1703
1704 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1705 {
1706         if (acb) {
1707                 /* stop adapter background rebuild */
1708                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1709                         uint32_t intmask_org;
1710                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1711                         intmask_org = arcmsr_disable_outbound_ints(acb);
1712                         arcmsr_stop_adapter_bgrb(acb);
1713                         arcmsr_flush_adapter_cache(acb);
1714                         arcmsr_enable_outbound_ints(acb, intmask_org);
1715                 }
1716         }
1717 }
1718
1719 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1720 {
1721         int32_t wqbuf_firstindex, wqbuf_lastindex;
1722         uint8_t *pQbuffer;
1723         struct QBUFFER __iomem *pwbuffer;
1724         uint8_t __iomem *iop_data;
1725         int32_t allxfer_len = 0;
1726         pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1727         iop_data = (uint8_t __iomem *)pwbuffer->data;
1728         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1729                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1730                 wqbuf_firstindex = acb->wqbuf_firstindex;
1731                 wqbuf_lastindex = acb->wqbuf_lastindex;
1732                 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1733                         pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1734                         memcpy(iop_data, pQbuffer, 1);
1735                         wqbuf_firstindex++;
1736                         wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1737                         iop_data++;
1738                         allxfer_len++;
1739                 }
1740                 acb->wqbuf_firstindex = wqbuf_firstindex;
1741                 pwbuffer->data_len = allxfer_len;
1742                 arcmsr_iop_message_wrote(acb);
1743         }
1744 }
1745
1746 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1747                                         struct scsi_cmnd *cmd)
1748 {
1749         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1750         int retvalue = 0, transfer_len = 0;
1751         char *buffer;
1752         struct scatterlist *sg;
1753         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1754                                                 (uint32_t ) cmd->cmnd[6] << 16 |
1755                                                 (uint32_t ) cmd->cmnd[7] << 8  |
1756                                                 (uint32_t ) cmd->cmnd[8];
1757                                                 /* 4 bytes: Areca io control code */
1758         sg = scsi_sglist(cmd);
1759         buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1760         if (scsi_sg_count(cmd) > 1) {
1761                 retvalue = ARCMSR_MESSAGE_FAIL;
1762                 goto message_out;
1763         }
1764         transfer_len += sg->length;
1765
1766         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1767                 retvalue = ARCMSR_MESSAGE_FAIL;
1768                 goto message_out;
1769         }
1770         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1771         switch(controlcode) {
1772
1773         case ARCMSR_MESSAGE_READ_RQBUFFER: {
1774                 unsigned char *ver_addr;
1775                 uint8_t *pQbuffer, *ptmpQbuffer;
1776                 int32_t allxfer_len = 0;
1777
1778                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1779                 if (!ver_addr) {
1780                         retvalue = ARCMSR_MESSAGE_FAIL;
1781                         goto message_out;
1782                 }
1783
1784                 ptmpQbuffer = ver_addr;
1785                 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1786                         && (allxfer_len < 1031)) {
1787                         pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1788                         memcpy(ptmpQbuffer, pQbuffer, 1);
1789                         acb->rqbuf_firstindex++;
1790                         acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1791                         ptmpQbuffer++;
1792                         allxfer_len++;
1793                 }
1794                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1795
1796                         struct QBUFFER __iomem *prbuffer;
1797                         uint8_t __iomem *iop_data;
1798                         int32_t iop_len;
1799
1800                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1801                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1802                         iop_data = prbuffer->data;
1803                         iop_len = readl(&prbuffer->data_len);
1804                         while (iop_len > 0) {
1805                                 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1806                                 acb->rqbuf_lastindex++;
1807                                 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1808                                 iop_data++;
1809                                 iop_len--;
1810                         }
1811                         arcmsr_iop_message_read(acb);
1812                 }
1813                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1814                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1815                 if(acb->fw_flag == FW_DEADLOCK) {
1816                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1817                 }else{
1818                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1819                 }
1820                 kfree(ver_addr);
1821                 }
1822                 break;
1823
1824         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1825                 unsigned char *ver_addr;
1826                 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1827                 uint8_t *pQbuffer, *ptmpuserbuffer;
1828
1829                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1830                 if (!ver_addr) {
1831                         retvalue = ARCMSR_MESSAGE_FAIL;
1832                         goto message_out;
1833                 }
1834                 if(acb->fw_flag == FW_DEADLOCK) {
1835                         pcmdmessagefld->cmdmessage.ReturnCode =
1836                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1837                 }else{
1838                         pcmdmessagefld->cmdmessage.ReturnCode =
1839                         ARCMSR_MESSAGE_RETURNCODE_OK;
1840                 }
1841                 ptmpuserbuffer = ver_addr;
1842                 user_len = pcmdmessagefld->cmdmessage.Length;
1843                 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1844                 wqbuf_lastindex = acb->wqbuf_lastindex;
1845                 wqbuf_firstindex = acb->wqbuf_firstindex;
1846                 if (wqbuf_lastindex != wqbuf_firstindex) {
1847                         struct SENSE_DATA *sensebuffer =
1848                                 (struct SENSE_DATA *)cmd->sense_buffer;
1849                         arcmsr_post_ioctldata2iop(acb);
1850                         /* has error report sensedata */
1851                         sensebuffer->ErrorCode = 0x70;
1852                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
1853                         sensebuffer->AdditionalSenseLength = 0x0A;
1854                         sensebuffer->AdditionalSenseCode = 0x20;
1855                         sensebuffer->Valid = 1;
1856                         retvalue = ARCMSR_MESSAGE_FAIL;
1857                 } else {
1858                         my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1859                                 &(ARCMSR_MAX_QBUFFER - 1);
1860                         if (my_empty_len >= user_len) {
1861                                 while (user_len > 0) {
1862                                         pQbuffer =
1863                                         &acb->wqbuffer[acb->wqbuf_lastindex];
1864                                         memcpy(pQbuffer, ptmpuserbuffer, 1);
1865                                         acb->wqbuf_lastindex++;
1866                                         acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1867                                         ptmpuserbuffer++;
1868                                         user_len--;
1869                                 }
1870                                 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1871                                         acb->acb_flags &=
1872                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1873                                         arcmsr_post_ioctldata2iop(acb);
1874                                 }
1875                         } else {
1876                                 /* has error report sensedata */
1877                                 struct SENSE_DATA *sensebuffer =
1878                                         (struct SENSE_DATA *)cmd->sense_buffer;
1879                                 sensebuffer->ErrorCode = 0x70;
1880                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1881                                 sensebuffer->AdditionalSenseLength = 0x0A;
1882                                 sensebuffer->AdditionalSenseCode = 0x20;
1883                                 sensebuffer->Valid = 1;
1884                                 retvalue = ARCMSR_MESSAGE_FAIL;
1885                         }
1886                         }
1887                         kfree(ver_addr);
1888                 }
1889                 break;
1890
1891         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1892                 uint8_t *pQbuffer = acb->rqbuffer;
1893                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1894                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1895                         arcmsr_iop_message_read(acb);
1896                 }
1897                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1898                 acb->rqbuf_firstindex = 0;
1899                 acb->rqbuf_lastindex = 0;
1900                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1901                 if(acb->fw_flag == FW_DEADLOCK) {
1902                         pcmdmessagefld->cmdmessage.ReturnCode =
1903                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1904                 }else{
1905                         pcmdmessagefld->cmdmessage.ReturnCode =
1906                         ARCMSR_MESSAGE_RETURNCODE_OK;
1907                 }
1908                 }
1909                 break;
1910
1911         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1912                 uint8_t *pQbuffer = acb->wqbuffer;
1913                 if(acb->fw_flag == FW_DEADLOCK) {
1914                         pcmdmessagefld->cmdmessage.ReturnCode =
1915                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1916                 }else{
1917                         pcmdmessagefld->cmdmessage.ReturnCode =
1918                         ARCMSR_MESSAGE_RETURNCODE_OK;
1919                 }
1920
1921                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1922                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1923                         arcmsr_iop_message_read(acb);
1924                 }
1925                 acb->acb_flags |=
1926                         (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1927                                 ACB_F_MESSAGE_WQBUFFER_READED);
1928                 acb->wqbuf_firstindex = 0;
1929                 acb->wqbuf_lastindex = 0;
1930                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1931                 }
1932                 break;
1933
1934         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1935                 uint8_t *pQbuffer;
1936
1937                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1938                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1939                         arcmsr_iop_message_read(acb);
1940                 }
1941                 acb->acb_flags |=
1942                         (ACB_F_MESSAGE_WQBUFFER_CLEARED
1943                         | ACB_F_MESSAGE_RQBUFFER_CLEARED
1944                         | ACB_F_MESSAGE_WQBUFFER_READED);
1945                 acb->rqbuf_firstindex = 0;
1946                 acb->rqbuf_lastindex = 0;
1947                 acb->wqbuf_firstindex = 0;
1948                 acb->wqbuf_lastindex = 0;
1949                 pQbuffer = acb->rqbuffer;
1950                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1951                 pQbuffer = acb->wqbuffer;
1952                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1953                 if(acb->fw_flag == FW_DEADLOCK) {
1954                         pcmdmessagefld->cmdmessage.ReturnCode =
1955                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1956                 }else{
1957                         pcmdmessagefld->cmdmessage.ReturnCode =
1958                         ARCMSR_MESSAGE_RETURNCODE_OK;
1959                 }
1960                 }
1961                 break;
1962
1963         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1964                 if(acb->fw_flag == FW_DEADLOCK) {
1965                         pcmdmessagefld->cmdmessage.ReturnCode =
1966                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1967                 }else{
1968                         pcmdmessagefld->cmdmessage.ReturnCode =
1969                         ARCMSR_MESSAGE_RETURNCODE_3F;
1970                 }
1971                 break;
1972                 }
1973         case ARCMSR_MESSAGE_SAY_HELLO: {
1974                 int8_t *hello_string = "Hello! I am ARCMSR";
1975                 if(acb->fw_flag == FW_DEADLOCK) {
1976                         pcmdmessagefld->cmdmessage.ReturnCode =
1977                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1978                 }else{
1979                         pcmdmessagefld->cmdmessage.ReturnCode =
1980                         ARCMSR_MESSAGE_RETURNCODE_OK;
1981                 }
1982                 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1983                         , (int16_t)strlen(hello_string));
1984                 }
1985                 break;
1986
1987         case ARCMSR_MESSAGE_SAY_GOODBYE:
1988                 if(acb->fw_flag == FW_DEADLOCK) {
1989                         pcmdmessagefld->cmdmessage.ReturnCode =
1990                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1991                 }
1992                 arcmsr_iop_parking(acb);
1993                 break;
1994
1995         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1996                 if(acb->fw_flag == FW_DEADLOCK) {
1997                         pcmdmessagefld->cmdmessage.ReturnCode =
1998                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1999                 }
2000                 arcmsr_flush_adapter_cache(acb);
2001                 break;
2002
2003         default:
2004                 retvalue = ARCMSR_MESSAGE_FAIL;
2005         }
2006         message_out:
2007         sg = scsi_sglist(cmd);
2008         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2009         return retvalue;
2010 }
2011
2012 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
2013 {
2014         struct list_head *head = &acb->ccb_free_list;
2015         struct CommandControlBlock *ccb = NULL;
2016         unsigned long flags;
2017         spin_lock_irqsave(&acb->ccblist_lock, flags);
2018         if (!list_empty(head)) {
2019                 ccb = list_entry(head->next, struct CommandControlBlock, list);
2020                 list_del_init(&ccb->list);
2021         }else{
2022                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2023                 return 0;
2024         }
2025         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2026         return ccb;
2027 }
2028
2029 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2030                 struct scsi_cmnd *cmd)
2031 {
2032         switch (cmd->cmnd[0]) {
2033         case INQUIRY: {
2034                 unsigned char inqdata[36];
2035                 char *buffer;
2036                 struct scatterlist *sg;
2037
2038                 if (cmd->device->lun) {
2039                         cmd->result = (DID_TIME_OUT << 16);
2040                         cmd->scsi_done(cmd);
2041                         return;
2042                 }
2043                 inqdata[0] = TYPE_PROCESSOR;
2044                 /* Periph Qualifier & Periph Dev Type */
2045                 inqdata[1] = 0;
2046                 /* rem media bit & Dev Type Modifier */
2047                 inqdata[2] = 0;
2048                 /* ISO, ECMA, & ANSI versions */
2049                 inqdata[4] = 31;
2050                 /* length of additional data */
2051                 strncpy(&inqdata[8], "Areca   ", 8);
2052                 /* Vendor Identification */
2053                 strncpy(&inqdata[16], "RAID controller ", 16);
2054                 /* Product Identification */
2055                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2056
2057                 sg = scsi_sglist(cmd);
2058                 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
2059
2060                 memcpy(buffer, inqdata, sizeof(inqdata));
2061                 sg = scsi_sglist(cmd);
2062                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2063
2064                 cmd->scsi_done(cmd);
2065         }
2066         break;
2067         case WRITE_BUFFER:
2068         case READ_BUFFER: {
2069                 if (arcmsr_iop_message_xfer(acb, cmd))
2070                         cmd->result = (DID_ERROR << 16);
2071                 cmd->scsi_done(cmd);
2072         }
2073         break;
2074         default:
2075                 cmd->scsi_done(cmd);
2076         }
2077 }
2078
2079 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2080         void (* done)(struct scsi_cmnd *))
2081 {
2082         struct Scsi_Host *host = cmd->device->host;
2083         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2084         struct CommandControlBlock *ccb;
2085         int target = cmd->device->id;
2086         int lun = cmd->device->lun;
2087         uint8_t scsicmd = cmd->cmnd[0];
2088         cmd->scsi_done = done;
2089         cmd->host_scribble = NULL;
2090         cmd->result = 0;
2091         if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2092                 if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2093                         cmd->result = (DID_NO_CONNECT << 16);
2094                 }
2095                 cmd->scsi_done(cmd);
2096                 return 0;
2097         }
2098         if (target == 16) {
2099                 /* virtual device for iop message transfer */
2100                 arcmsr_handle_virtual_command(acb, cmd);
2101                 return 0;
2102         }
2103         if (atomic_read(&acb->ccboutstandingcount) >=
2104                         ARCMSR_MAX_OUTSTANDING_CMD)
2105                 return SCSI_MLQUEUE_HOST_BUSY;
2106         ccb = arcmsr_get_freeccb(acb);
2107         if (!ccb)
2108                 return SCSI_MLQUEUE_HOST_BUSY;
2109         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2110                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2111                 cmd->scsi_done(cmd);
2112                 return 0;
2113         }
2114         arcmsr_post_ccb(acb, ccb);
2115         return 0;
2116 }
2117
2118 static DEF_SCSI_QCMD(arcmsr_queue_command)
2119
2120 static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2121 {
2122         struct MessageUnit_A __iomem *reg = acb->pmuA;
2123         char *acb_firm_model = acb->firm_model;
2124         char *acb_firm_version = acb->firm_version;
2125         char *acb_device_map = acb->device_map;
2126         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2127         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2128         char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2129         int count;
2130         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2131         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2132                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2133                         miscellaneous data' timeout \n", acb->host->host_no);
2134                 return false;
2135         }
2136         count = 8;
2137         while (count){
2138                 *acb_firm_model = readb(iop_firm_model);
2139                 acb_firm_model++;
2140                 iop_firm_model++;
2141                 count--;
2142         }
2143
2144         count = 16;
2145         while (count){
2146                 *acb_firm_version = readb(iop_firm_version);
2147                 acb_firm_version++;
2148                 iop_firm_version++;
2149                 count--;
2150         }
2151
2152         count=16;
2153         while(count){
2154                 *acb_device_map = readb(iop_device_map);
2155                 acb_device_map++;
2156                 iop_device_map++;
2157                 count--;
2158         }
2159         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2160                 acb->host->host_no,
2161                 acb->firm_version,
2162                 acb->firm_model);
2163         acb->signature = readl(&reg->message_rwbuffer[0]);
2164         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2165         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2166         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2167         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2168         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2169         return true;
2170 }
2171 static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2172 {
2173         struct MessageUnit_B *reg = acb->pmuB;
2174         struct pci_dev *pdev = acb->pdev;
2175         void *dma_coherent;
2176         dma_addr_t dma_coherent_handle;
2177         char *acb_firm_model = acb->firm_model;
2178         char *acb_firm_version = acb->firm_version;
2179         char *acb_device_map = acb->device_map;
2180         char __iomem *iop_firm_model;
2181         /*firm_model,15,60-67*/
2182         char __iomem *iop_firm_version;
2183         /*firm_version,17,68-83*/
2184         char __iomem *iop_device_map;
2185         /*firm_version,21,84-99*/
2186         int count;
2187         dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2188         if (!dma_coherent){
2189                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2190                 return false;
2191         }
2192         acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2193         reg = (struct MessageUnit_B *)dma_coherent;
2194         acb->pmuB = reg;
2195         reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2196         reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2197         reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2198         reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2199         reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2200         reg->message_rbuffer =  (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2201         reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2202         iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2203         iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2204         iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2205
2206         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2207         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2208                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2209                         miscellaneous data' timeout \n", acb->host->host_no);
2210                 return false;
2211         }
2212         count = 8;
2213         while (count){
2214                 *acb_firm_model = readb(iop_firm_model);
2215                 acb_firm_model++;
2216                 iop_firm_model++;
2217                 count--;
2218         }
2219         count = 16;
2220         while (count){
2221                 *acb_firm_version = readb(iop_firm_version);
2222                 acb_firm_version++;
2223                 iop_firm_version++;
2224                 count--;
2225         }
2226
2227         count = 16;
2228         while(count){
2229                 *acb_device_map = readb(iop_device_map);
2230                 acb_device_map++;
2231                 iop_device_map++;
2232                 count--;
2233         }
2234
2235         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2236                 acb->host->host_no,
2237                 acb->firm_version,
2238                 acb->firm_model);
2239
2240         acb->signature = readl(&reg->message_rwbuffer[1]);
2241         /*firm_signature,1,00-03*/
2242         acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2243         /*firm_request_len,1,04-07*/
2244         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2245         /*firm_numbers_queue,2,08-11*/
2246         acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2247         /*firm_sdram_size,3,12-15*/
2248         acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2249         /*firm_ide_channels,4,16-19*/
2250         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2251         /*firm_ide_channels,4,16-19*/
2252         return true;
2253 }
2254
2255 static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2256 {
2257         uint32_t intmask_org, Index, firmware_state = 0;
2258         struct MessageUnit_C *reg = pACB->pmuC;
2259         char *acb_firm_model = pACB->firm_model;
2260         char *acb_firm_version = pACB->firm_version;
2261         char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2262         char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2263         int count;
2264         /* disable all outbound interrupt */
2265         intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2266         writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2267         /* wait firmware ready */
2268         do {
2269                 firmware_state = readl(&reg->outbound_msgaddr1);
2270         } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2271         /* post "get config" instruction */
2272         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2273         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2274         /* wait message ready */
2275         for (Index = 0; Index < 2000; Index++) {
2276                 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2277                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2278                         break;
2279                 }
2280                 udelay(10);
2281         } /*max 1 seconds*/
2282         if (Index >= 2000) {
2283                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2284                         miscellaneous data' timeout \n", pACB->host->host_no);
2285                 return false;
2286         }
2287         count = 8;
2288         while (count) {
2289                 *acb_firm_model = readb(iop_firm_model);
2290                 acb_firm_model++;
2291                 iop_firm_model++;
2292                 count--;
2293         }
2294         count = 16;
2295         while (count) {
2296                 *acb_firm_version = readb(iop_firm_version);
2297                 acb_firm_version++;
2298                 iop_firm_version++;
2299                 count--;
2300         }
2301         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2302                 pACB->host->host_no,
2303                 pACB->firm_version,
2304                 pACB->firm_model);
2305         pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2306         pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2307         pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2308         pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2309         pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2310         /*all interrupt service will be enable at arcmsr_iop_init*/
2311         return true;
2312 }
2313 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2314 {
2315         if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2316                 return arcmsr_get_hba_config(acb);
2317         else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2318                 return arcmsr_get_hbb_config(acb);
2319         else
2320                 return arcmsr_get_hbc_config(acb);
2321 }
2322
2323 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2324         struct CommandControlBlock *poll_ccb)
2325 {
2326         struct MessageUnit_A __iomem *reg = acb->pmuA;
2327         struct CommandControlBlock *ccb;
2328         struct ARCMSR_CDB *arcmsr_cdb;
2329         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2330         int rtn;
2331         bool error;
2332         polling_hba_ccb_retry:
2333         poll_count++;
2334         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2335         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2336         while (1) {
2337                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2338                         if (poll_ccb_done){
2339                                 rtn = SUCCESS;
2340                                 break;
2341                         }else {
2342                                 msleep(25);
2343                                 if (poll_count > 100){
2344                                         rtn = FAILED;
2345                                         break;
2346                                 }
2347                                 goto polling_hba_ccb_retry;
2348                         }
2349                 }
2350                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2351                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2352                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2353                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2354                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2355                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2356                                         " poll command abort successfully \n"
2357                                         , acb->host->host_no
2358                                         , ccb->pcmd->device->id
2359                                         , ccb->pcmd->device->lun
2360                                         , ccb);
2361                                 ccb->pcmd->result = DID_ABORT << 16;
2362                                 arcmsr_ccb_complete(ccb);
2363                                 continue;
2364                         }
2365                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2366                                 " command done ccb = '0x%p'"
2367                                 "ccboutstandingcount = %d \n"
2368                                 , acb->host->host_no
2369                                 , ccb
2370                                 , atomic_read(&acb->ccboutstandingcount));
2371                         continue;
2372                 }
2373                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2374                 arcmsr_report_ccb_state(acb, ccb, error);
2375         }
2376         return rtn;
2377 }
2378
2379 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2380                                         struct CommandControlBlock *poll_ccb)
2381 {
2382         struct MessageUnit_B *reg = acb->pmuB;
2383         struct ARCMSR_CDB *arcmsr_cdb;
2384         struct CommandControlBlock *ccb;
2385         uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2386         int index, rtn;
2387         bool error;
2388         polling_hbb_ccb_retry:
2389
2390         poll_count++;
2391         /* clear doorbell interrupt */
2392         writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2393         while(1){
2394                 index = reg->doneq_index;
2395                 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2396                         if (poll_ccb_done){
2397                                 rtn = SUCCESS;
2398                                 break;
2399                         }else {
2400                                 msleep(25);
2401                                 if (poll_count > 100){
2402                                         rtn = FAILED;
2403                                         break;
2404                                 }
2405                                 goto polling_hbb_ccb_retry;
2406                         }
2407                 }
2408                 writel(0, &reg->done_qbuffer[index]);
2409                 index++;
2410                 /*if last index number set it to 0 */
2411                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2412                 reg->doneq_index = index;
2413                 /* check if command done with no error*/
2414                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2415                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2416                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2417                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2418                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2419                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2420                                         " poll command abort successfully \n"
2421                                         ,acb->host->host_no
2422                                         ,ccb->pcmd->device->id
2423                                         ,ccb->pcmd->device->lun
2424                                         ,ccb);
2425                                 ccb->pcmd->result = DID_ABORT << 16;
2426                                 arcmsr_ccb_complete(ccb);
2427                                 continue;
2428                         }
2429                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2430                                 " command done ccb = '0x%p'"
2431                                 "ccboutstandingcount = %d \n"
2432                                 , acb->host->host_no
2433                                 , ccb
2434                                 , atomic_read(&acb->ccboutstandingcount));
2435                         continue;
2436                 }
2437                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2438                 arcmsr_report_ccb_state(acb, ccb, error);
2439         }
2440         return rtn;
2441 }
2442
2443 static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2444 {
2445         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2446         uint32_t flag_ccb, ccb_cdb_phy;
2447         struct ARCMSR_CDB *arcmsr_cdb;
2448         bool error;
2449         struct CommandControlBlock *pCCB;
2450         uint32_t poll_ccb_done = 0, poll_count = 0;
2451         int rtn;
2452 polling_hbc_ccb_retry:
2453         poll_count++;
2454         while (1) {
2455                 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2456                         if (poll_ccb_done) {
2457                                 rtn = SUCCESS;
2458                                 break;
2459                         } else {
2460                                 msleep(25);
2461                                 if (poll_count > 100) {
2462                                         rtn = FAILED;
2463                                         break;
2464                                 }
2465                                 goto polling_hbc_ccb_retry;
2466                         }
2467                 }
2468                 flag_ccb = readl(&reg->outbound_queueport_low);
2469                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2470                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2471                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2472                 poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2473                 /* check ifcommand done with no error*/
2474                 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2475                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2476                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2477                                         " poll command abort successfully \n"
2478                                         , acb->host->host_no
2479                                         , pCCB->pcmd->device->id
2480                                         , pCCB->pcmd->device->lun
2481                                         , pCCB);
2482                                         pCCB->pcmd->result = DID_ABORT << 16;
2483                                         arcmsr_ccb_complete(pCCB);
2484                                 continue;
2485                         }
2486                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2487                                 " command done ccb = '0x%p'"
2488                                 "ccboutstandingcount = %d \n"
2489                                 , acb->host->host_no
2490                                 , pCCB
2491                                 , atomic_read(&acb->ccboutstandingcount));
2492                         continue;
2493                 }
2494                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2495                 arcmsr_report_ccb_state(acb, pCCB, error);
2496         }
2497         return rtn;
2498 }
2499 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2500                                         struct CommandControlBlock *poll_ccb)
2501 {
2502         int rtn = 0;
2503         switch (acb->adapter_type) {
2504
2505         case ACB_ADAPTER_TYPE_A: {
2506                 rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2507                 }
2508                 break;
2509
2510         case ACB_ADAPTER_TYPE_B: {
2511                 rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2512                 }
2513                 break;
2514         case ACB_ADAPTER_TYPE_C: {
2515                 rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2516                 }
2517         }
2518         return rtn;
2519 }
2520
2521 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2522 {
2523         uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2524         dma_addr_t dma_coherent_handle;
2525         /*
2526         ********************************************************************
2527         ** here we need to tell iop 331 our freeccb.HighPart
2528         ** if freeccb.HighPart is not zero
2529         ********************************************************************
2530         */
2531         dma_coherent_handle = acb->dma_coherent_handle;
2532         cdb_phyaddr = (uint32_t)(dma_coherent_handle);
2533         cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
2534         acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2535         /*
2536         ***********************************************************************
2537         **    if adapter type B, set window of "post command Q"
2538         ***********************************************************************
2539         */
2540         switch (acb->adapter_type) {
2541
2542         case ACB_ADAPTER_TYPE_A: {
2543                 if (cdb_phyaddr_hi32 != 0) {
2544                         struct MessageUnit_A __iomem *reg = acb->pmuA;
2545                         uint32_t intmask_org;
2546                         intmask_org = arcmsr_disable_outbound_ints(acb);
2547                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2548                                                 &reg->message_rwbuffer[0]);
2549                         writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2550                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2551                                                         &reg->inbound_msgaddr0);
2552                         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2553                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2554                                 part physical address timeout\n",
2555                                 acb->host->host_no);
2556                                 return 1;
2557                         }
2558                         arcmsr_enable_outbound_ints(acb, intmask_org);
2559                 }
2560                 }
2561                 break;
2562
2563         case ACB_ADAPTER_TYPE_B: {
2564                 unsigned long post_queue_phyaddr;
2565                 uint32_t __iomem *rwbuffer;
2566
2567                 struct MessageUnit_B *reg = acb->pmuB;
2568                 uint32_t intmask_org;
2569                 intmask_org = arcmsr_disable_outbound_ints(acb);
2570                 reg->postq_index = 0;
2571                 reg->doneq_index = 0;
2572                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2573                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2574                         printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2575                                 acb->host->host_no);
2576                         return 1;
2577                 }
2578                 post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2579                 rwbuffer = reg->message_rwbuffer;
2580                 /* driver "set config" signature */
2581                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2582                 /* normal should be zero */
2583                 writel(cdb_phyaddr_hi32, rwbuffer++);
2584                 /* postQ size (256 + 8)*4        */
2585                 writel(post_queue_phyaddr, rwbuffer++);
2586                 /* doneQ size (256 + 8)*4        */
2587                 writel(post_queue_phyaddr + 1056, rwbuffer++);
2588                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
2589                 writel(1056, rwbuffer);
2590
2591                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2592                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2593                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2594                         timeout \n",acb->host->host_no);
2595                         return 1;
2596                 }
2597                 arcmsr_hbb_enable_driver_mode(acb);
2598                 arcmsr_enable_outbound_ints(acb, intmask_org);
2599                 }
2600                 break;
2601         case ACB_ADAPTER_TYPE_C: {
2602                 if (cdb_phyaddr_hi32 != 0) {
2603                         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2604
2605                         if (cdb_phyaddr_hi32 != 0) {
2606                                 unsigned char Retries = 0x00;
2607                                 do {
2608                                         printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x \n", acb->adapter_index, cdb_phyaddr_hi32);
2609                                 } while (Retries++ < 100);
2610                         }
2611                         writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2612                         writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2613                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2614                         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2615                         if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2616                                 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2617                                 timeout \n", acb->host->host_no);
2618                                 return 1;
2619                         }
2620                 }
2621                 }
2622         }
2623         return 0;
2624 }
2625
2626 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2627 {
2628         uint32_t firmware_state = 0;
2629         switch (acb->adapter_type) {
2630
2631         case ACB_ADAPTER_TYPE_A: {
2632                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2633                 do {
2634                         firmware_state = readl(&reg->outbound_msgaddr1);
2635                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2636                 }
2637                 break;
2638
2639         case ACB_ADAPTER_TYPE_B: {
2640                 struct MessageUnit_B *reg = acb->pmuB;
2641                 do {
2642                         firmware_state = readl(reg->iop2drv_doorbell);
2643                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2644                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2645                 }
2646                 break;
2647         case ACB_ADAPTER_TYPE_C: {
2648                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2649                 do {
2650                         firmware_state = readl(&reg->outbound_msgaddr1);
2651                 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2652                 }
2653         }
2654 }
2655
2656 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2657 {
2658         struct MessageUnit_A __iomem *reg = acb->pmuA;
2659         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2660                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2661                 return;
2662         } else {
2663                 acb->fw_flag = FW_NORMAL;
2664                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2665                         atomic_set(&acb->rq_map_token, 16);
2666                 }
2667                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2668                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2669                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2670                         return;
2671                 }
2672                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2673                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2674         }
2675         return;
2676 }
2677
2678 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2679 {
2680         struct MessageUnit_B __iomem *reg = acb->pmuB;
2681         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2682                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2683                 return;
2684         } else {
2685                 acb->fw_flag = FW_NORMAL;
2686                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2687                         atomic_set(&acb->rq_map_token, 16);
2688                 }
2689                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2690                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2691                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2692                         return;
2693                 }
2694                 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2695                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2696         }
2697         return;
2698 }
2699
2700 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2701 {
2702         struct MessageUnit_C __iomem *reg = acb->pmuC;
2703         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
2704                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2705                 return;
2706         } else {
2707                 acb->fw_flag = FW_NORMAL;
2708                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2709                         atomic_set(&acb->rq_map_token, 16);
2710                 }
2711                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2712                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2713                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2714                         return;
2715                 }
2716                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2717                 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2718                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2719         }
2720         return;
2721 }
2722
2723 static void arcmsr_request_device_map(unsigned long pacb)
2724 {
2725         struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2726         switch (acb->adapter_type) {
2727                 case ACB_ADAPTER_TYPE_A: {
2728                         arcmsr_request_hba_device_map(acb);
2729                 }
2730                 break;
2731                 case ACB_ADAPTER_TYPE_B: {
2732                         arcmsr_request_hbb_device_map(acb);
2733                 }
2734                 break;
2735                 case ACB_ADAPTER_TYPE_C: {
2736                         arcmsr_request_hbc_device_map(acb);
2737                 }
2738         }
2739 }
2740
2741 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2742 {
2743         struct MessageUnit_A __iomem *reg = acb->pmuA;
2744         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2745         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2746         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2747                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2748                                 rebulid' timeout \n", acb->host->host_no);
2749         }
2750 }
2751
2752 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2753 {
2754         struct MessageUnit_B *reg = acb->pmuB;
2755         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2756         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2757         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2758                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2759                                 rebulid' timeout \n",acb->host->host_no);
2760         }
2761 }
2762
2763 static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2764 {
2765         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2766         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2767         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2768         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2769         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2770                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2771                                 rebulid' timeout \n", pACB->host->host_no);
2772         }
2773         return;
2774 }
2775 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2776 {
2777         switch (acb->adapter_type) {
2778         case ACB_ADAPTER_TYPE_A:
2779                 arcmsr_start_hba_bgrb(acb);
2780                 break;
2781         case ACB_ADAPTER_TYPE_B:
2782                 arcmsr_start_hbb_bgrb(acb);
2783                 break;
2784         case ACB_ADAPTER_TYPE_C:
2785                 arcmsr_start_hbc_bgrb(acb);
2786         }
2787 }
2788
2789 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2790 {
2791         switch (acb->adapter_type) {
2792         case ACB_ADAPTER_TYPE_A: {
2793                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2794                 uint32_t outbound_doorbell;
2795                 /* empty doorbell Qbuffer if door bell ringed */
2796                 outbound_doorbell = readl(&reg->outbound_doorbell);
2797                 /*clear doorbell interrupt */
2798                 writel(outbound_doorbell, &reg->outbound_doorbell);
2799                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2800                 }
2801                 break;
2802
2803         case ACB_ADAPTER_TYPE_B: {
2804                 struct MessageUnit_B *reg = acb->pmuB;
2805                 /*clear interrupt and message state*/
2806                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2807                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2808                 /* let IOP know data has been read */
2809                 }
2810                 break;
2811         case ACB_ADAPTER_TYPE_C: {
2812                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2813                 uint32_t outbound_doorbell;
2814                 /* empty doorbell Qbuffer if door bell ringed */
2815                 outbound_doorbell = readl(&reg->outbound_doorbell);
2816                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2817                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2818                 }
2819         }
2820 }
2821
2822 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2823 {
2824         switch (acb->adapter_type) {
2825         case ACB_ADAPTER_TYPE_A:
2826                 return;
2827         case ACB_ADAPTER_TYPE_B:
2828                 {
2829                         struct MessageUnit_B *reg = acb->pmuB;
2830                         writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2831                         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2832                                 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2833                                 return;
2834                         }
2835                 }
2836                 break;
2837         case ACB_ADAPTER_TYPE_C:
2838                 return;
2839         }
2840         return;
2841 }
2842
2843 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2844 {
2845         uint8_t value[64];
2846         int i, count = 0;
2847         struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2848         struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2849         u32 temp = 0;
2850         /* backup pci config data */
2851         printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2852         for (i = 0; i < 64; i++) {
2853                 pci_read_config_byte(acb->pdev, i, &value[i]);
2854         }
2855         /* hardware reset signal */
2856         if ((acb->dev_id == 0x1680)) {
2857                 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2858         } else if ((acb->dev_id == 0x1880)) {
2859                 do {
2860                         count++;
2861                         writel(0xF, &pmuC->write_sequence);
2862                         writel(0x4, &pmuC->write_sequence);
2863                         writel(0xB, &pmuC->write_sequence);
2864                         writel(0x2, &pmuC->write_sequence);
2865                         writel(0x7, &pmuC->write_sequence);
2866                         writel(0xD, &pmuC->write_sequence);
2867                 } while ((((temp = readl(&pmuC->host_diagnostic)) | ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2868                 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2869         } else {
2870                 pci_write_config_byte(acb->pdev, 0x84, 0x20);
2871         }
2872         msleep(2000);
2873         /* write back pci config data */
2874         for (i = 0; i < 64; i++) {
2875                 pci_write_config_byte(acb->pdev, i, value[i]);
2876         }
2877         msleep(1000);
2878         return;
2879 }
2880 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2881 {
2882         uint32_t intmask_org;
2883         /* disable all outbound interrupt */
2884         intmask_org = arcmsr_disable_outbound_ints(acb);
2885         arcmsr_wait_firmware_ready(acb);
2886         arcmsr_iop_confirm(acb);
2887         /*start background rebuild*/
2888         arcmsr_start_adapter_bgrb(acb);
2889         /* empty doorbell Qbuffer if door bell ringed */
2890         arcmsr_clear_doorbell_queue_buffer(acb);
2891         arcmsr_enable_eoi_mode(acb);
2892         /* enable outbound Post Queue,outbound doorbell Interrupt */
2893         arcmsr_enable_outbound_ints(acb, intmask_org);
2894         acb->acb_flags |= ACB_F_IOP_INITED;
2895 }
2896
2897 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2898 {
2899         struct CommandControlBlock *ccb;
2900         uint32_t intmask_org;
2901         uint8_t rtnval = 0x00;
2902         int i = 0;
2903         unsigned long flags;
2904
2905         if (atomic_read(&acb->ccboutstandingcount) != 0) {
2906                 /* disable all outbound interrupt */
2907                 intmask_org = arcmsr_disable_outbound_ints(acb);
2908                 /* talk to iop 331 outstanding command aborted */
2909                 rtnval = arcmsr_abort_allcmd(acb);
2910                 /* clear all outbound posted Q */
2911                 arcmsr_done4abort_postqueue(acb);
2912                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2913                         ccb = acb->pccb_pool[i];
2914                         if (ccb->startdone == ARCMSR_CCB_START) {
2915                                 scsi_dma_unmap(ccb->pcmd);
2916                                 ccb->startdone = ARCMSR_CCB_DONE;
2917                                 ccb->ccb_flags = 0;
2918                                 spin_lock_irqsave(&acb->ccblist_lock, flags);
2919                                 list_add_tail(&ccb->list, &acb->ccb_free_list);
2920                                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2921                         }
2922                 }
2923                 atomic_set(&acb->ccboutstandingcount, 0);
2924                 /* enable all outbound interrupt */
2925                 arcmsr_enable_outbound_ints(acb, intmask_org);
2926                 return rtnval;
2927         }
2928         return rtnval;
2929 }
2930
2931 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2932 {
2933         struct AdapterControlBlock *acb;
2934         uint32_t intmask_org, outbound_doorbell;
2935         int retry_count = 0;
2936         int rtn = FAILED;
2937         acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2938         printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2939         acb->num_resets++;
2940
2941         switch(acb->adapter_type){
2942                 case ACB_ADAPTER_TYPE_A:{
2943                         if (acb->acb_flags & ACB_F_BUS_RESET){
2944                                 long timeout;
2945                                 printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
2946                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2947                                 if (timeout) {
2948                                         return SUCCESS;
2949                                 }
2950                         }
2951                         acb->acb_flags |= ACB_F_BUS_RESET;
2952                         if (!arcmsr_iop_reset(acb)) {
2953                                 struct MessageUnit_A __iomem *reg;
2954                                 reg = acb->pmuA;
2955                                 arcmsr_hardware_reset(acb);
2956                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
2957 sleep_again:
2958                                 arcmsr_sleep_for_bus_reset(cmd);
2959                                 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2960                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
2961                                         if (retry_count > retrycount) {
2962                                                 acb->fw_flag = FW_DEADLOCK;
2963                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
2964                                                 return FAILED;
2965                                         }
2966                                         retry_count++;
2967                                         goto sleep_again;
2968                                 }
2969                                 acb->acb_flags |= ACB_F_IOP_INITED;
2970                                 /* disable all outbound interrupt */
2971                                 intmask_org = arcmsr_disable_outbound_ints(acb);
2972                                 arcmsr_get_firmware_spec(acb);
2973                                 arcmsr_start_adapter_bgrb(acb);
2974                                 /* clear Qbuffer if door bell ringed */
2975                                 outbound_doorbell = readl(&reg->outbound_doorbell);
2976                                 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2977                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2978                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
2979                                 arcmsr_enable_outbound_ints(acb, intmask_org);
2980                                 atomic_set(&acb->rq_map_token, 16);
2981                                 atomic_set(&acb->ante_token_value, 16);
2982                                 acb->fw_flag = FW_NORMAL;
2983                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2984                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2985                                 rtn = SUCCESS;
2986                                 printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
2987                         } else {
2988                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2989                                 atomic_set(&acb->rq_map_token, 16);
2990                                 atomic_set(&acb->ante_token_value, 16);
2991                                 acb->fw_flag = FW_NORMAL;
2992                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2993                                 rtn = SUCCESS;
2994                         }
2995                         break;
2996                 }
2997                 case ACB_ADAPTER_TYPE_B:{
2998                         acb->acb_flags |= ACB_F_BUS_RESET;
2999                         if (!arcmsr_iop_reset(acb)) {
3000                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3001                                 rtn = FAILED;
3002                         } else {
3003                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3004                                 atomic_set(&acb->rq_map_token, 16);
3005                                 atomic_set(&acb->ante_token_value, 16);
3006                                 acb->fw_flag = FW_NORMAL;
3007                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3008                                 rtn = SUCCESS;
3009                         }
3010                         break;
3011                 }
3012                 case ACB_ADAPTER_TYPE_C:{
3013                         if (acb->acb_flags & ACB_F_BUS_RESET) {
3014                                 long timeout;
3015                                 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
3016                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3017                                 if (timeout) {
3018                                         return SUCCESS;
3019                                 }
3020                         }
3021                         acb->acb_flags |= ACB_F_BUS_RESET;
3022                         if (!arcmsr_iop_reset(acb)) {
3023                                 struct MessageUnit_C __iomem *reg;
3024                                 reg = acb->pmuC;
3025                                 arcmsr_hardware_reset(acb);
3026                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3027 sleep:
3028                                 arcmsr_sleep_for_bus_reset(cmd);
3029                                 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3030                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
3031                                         if (retry_count > retrycount) {
3032                                                 acb->fw_flag = FW_DEADLOCK;
3033                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
3034                                                 return FAILED;
3035                                         }
3036                                         retry_count++;
3037                                         goto sleep;
3038                                 }
3039                                 acb->acb_flags |= ACB_F_IOP_INITED;
3040                                 /* disable all outbound interrupt */
3041                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3042                                 arcmsr_get_firmware_spec(acb);
3043                                 arcmsr_start_adapter_bgrb(acb);
3044                                 /* clear Qbuffer if door bell ringed */
3045                                 outbound_doorbell = readl(&reg->outbound_doorbell);
3046                                 writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3047                                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3048                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3049                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3050                                 atomic_set(&acb->rq_map_token, 16);
3051                                 atomic_set(&acb->ante_token_value, 16);
3052                                 acb->fw_flag = FW_NORMAL;
3053                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3054                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3055                                 rtn = SUCCESS;
3056                                 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3057                         } else {
3058                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3059                                 atomic_set(&acb->rq_map_token, 16);
3060                                 atomic_set(&acb->ante_token_value, 16);
3061                                 acb->fw_flag = FW_NORMAL;
3062                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3063                                 rtn = SUCCESS;
3064                         }
3065                         break;
3066                 }
3067         }
3068         return rtn;
3069 }
3070
3071 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3072                 struct CommandControlBlock *ccb)
3073 {
3074         int rtn;
3075         rtn = arcmsr_polling_ccbdone(acb, ccb);
3076         return rtn;
3077 }
3078
3079 static int arcmsr_abort(struct scsi_cmnd *cmd)
3080 {
3081         struct AdapterControlBlock *acb =
3082                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3083         int i = 0;
3084         int rtn = FAILED;
3085         printk(KERN_NOTICE
3086                 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3087                 acb->host->host_no, cmd->device->id, cmd->device->lun);
3088         acb->acb_flags |= ACB_F_ABORT;
3089         acb->num_aborts++;
3090         /*
3091         ************************************************
3092         ** the all interrupt service routine is locked
3093         ** we need to handle it as soon as possible and exit
3094         ************************************************
3095         */
3096         if (!atomic_read(&acb->ccboutstandingcount))
3097                 return rtn;
3098
3099         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3100                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3101                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3102                         ccb->startdone = ARCMSR_CCB_ABORTED;
3103                         rtn = arcmsr_abort_one_cmd(acb, ccb);
3104                         break;
3105                 }
3106         }
3107         acb->acb_flags &= ~ACB_F_ABORT;
3108         return rtn;
3109 }
3110
3111 static const char *arcmsr_info(struct Scsi_Host *host)
3112 {
3113         struct AdapterControlBlock *acb =
3114                 (struct AdapterControlBlock *) host->hostdata;
3115         static char buf[256];
3116         char *type;
3117         int raid6 = 1;
3118         switch (acb->pdev->device) {
3119         case PCI_DEVICE_ID_ARECA_1110:
3120         case PCI_DEVICE_ID_ARECA_1200:
3121         case PCI_DEVICE_ID_ARECA_1202:
3122         case PCI_DEVICE_ID_ARECA_1210:
3123                 raid6 = 0;
3124                 /*FALLTHRU*/
3125         case PCI_DEVICE_ID_ARECA_1120:
3126         case PCI_DEVICE_ID_ARECA_1130:
3127         case PCI_DEVICE_ID_ARECA_1160:
3128         case PCI_DEVICE_ID_ARECA_1170:
3129         case PCI_DEVICE_ID_ARECA_1201:
3130         case PCI_DEVICE_ID_ARECA_1220:
3131         case PCI_DEVICE_ID_ARECA_1230:
3132         case PCI_DEVICE_ID_ARECA_1260:
3133         case PCI_DEVICE_ID_ARECA_1270:
3134         case PCI_DEVICE_ID_ARECA_1280:
3135                 type = "SATA";
3136                 break;
3137         case PCI_DEVICE_ID_ARECA_1380:
3138         case PCI_DEVICE_ID_ARECA_1381:
3139         case PCI_DEVICE_ID_ARECA_1680:
3140         case PCI_DEVICE_ID_ARECA_1681:
3141         case PCI_DEVICE_ID_ARECA_1880:
3142                 type = "SAS";
3143                 break;
3144         default:
3145                 type = "X-TYPE";
3146                 break;
3147         }
3148         sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3149                         type, raid6 ? "( RAID6 capable)" : "",
3150                         ARCMSR_DRIVER_VERSION);
3151         return buf;
3152 }