drivers/scsi/arcmsr/arcmsr_hba.c

   1 /*
   2 *******************************************************************************
   3 **        O.S   : Linux
   4 **   FILE NAME  : arcmsr_hba.c
   5 **        BY    : Erich Chen
   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 = 30;
  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                 printk(KERN_NOTICE "wake-up\n");
 191                 return 0;
 192 }
 193
 194 static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
 195 {
 196         switch (acb->adapter_type) {
 197         case ACB_ADAPTER_TYPE_A:
 198         case ACB_ADAPTER_TYPE_C:
 199                 break;
 200         case ACB_ADAPTER_TYPE_B:{
 201                 dma_free_coherent(&acb->pdev->dev,
 202                         sizeof(struct MessageUnit_B),
 203                         acb->pmuB, acb->dma_coherent_handle_hbb_mu);
 204         }
 205         }
 206 }
 207
 208 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 209 {
 210         struct pci_dev *pdev = acb->pdev;
 211         switch (acb->adapter_type){
 212         case ACB_ADAPTER_TYPE_A:{
 213                 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 214                 if (!acb->pmuA) {
 215                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 216                         return false;
 217                 }
 218                 break;
 219         }
 220         case ACB_ADAPTER_TYPE_B:{
 221                 void __iomem *mem_base0, *mem_base1;
 222                 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 223                 if (!mem_base0) {
 224                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 225                         return false;
 226                 }
 227                 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 228                 if (!mem_base1) {
 229                         iounmap(mem_base0);
 230                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 231                         return false;
 232                 }
 233                 acb->mem_base0 = mem_base0;
 234                 acb->mem_base1 = mem_base1;
 235                 break;
 236         }
 237         case ACB_ADAPTER_TYPE_C:{
 238                 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 239                 if (!acb->pmuC) {
 240                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 241                         return false;
 242                 }
 243                 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 244                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 245                         return true;
 246                 }
 247                 break;
 248         }
 249         }
 250         return true;
 251 }
 252
 253 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 254 {
 255         switch (acb->adapter_type) {
 256         case ACB_ADAPTER_TYPE_A:{
 257                 iounmap(acb->pmuA);
 258         }
 259         break;
 260         case ACB_ADAPTER_TYPE_B:{
 261                 iounmap(acb->mem_base0);
 262                 iounmap(acb->mem_base1);
 263         }
 264
 265         break;
 266         case ACB_ADAPTER_TYPE_C:{
 267                 iounmap(acb->pmuC);
 268         }
 269         }
 270 }
 271
 272 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 273 {
 274         irqreturn_t handle_state;
 275         struct AdapterControlBlock *acb = dev_id;
 276
 277         handle_state = arcmsr_interrupt(acb);
 278         return handle_state;
 279 }
 280
 281 static int arcmsr_bios_param(struct scsi_device *sdev,
 282                 struct block_device *bdev, sector_t capacity, int *geom)
 283 {
 284         int ret, heads, sectors, cylinders, total_capacity;
 285         unsigned char *buffer;/* return copy of block device's partition table */
 286
 287         buffer = scsi_bios_ptable(bdev);
 288         if (buffer) {
 289                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 290                 kfree(buffer);
 291                 if (ret != -1)
 292                         return ret;
 293         }
 294         total_capacity = capacity;
 295         heads = 64;
 296         sectors = 32;
 297         cylinders = total_capacity / (heads * sectors);
 298         if (cylinders > 1024) {
 299                 heads = 255;
 300                 sectors = 63;
 301                 cylinders = total_capacity / (heads * sectors);
 302         }
 303         geom[0] = heads;
 304         geom[1] = sectors;
 305         geom[2] = cylinders;
 306         return 0;
 307 }
 308
 309 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 310 {
 311         struct pci_dev *pdev = acb->pdev;
 312         u16 dev_id;
 313         pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 314         acb->dev_id = dev_id;
 315         switch (dev_id) {
 316         case 0x1880: {
 317                 acb->adapter_type = ACB_ADAPTER_TYPE_C;
 318                 }
 319                 break;
 320         case 0x1201: {
 321                 acb->adapter_type = ACB_ADAPTER_TYPE_B;
 322                 }
 323                 break;
 324
 325         default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
 326         }
 327 }
 328
 329 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 330 {
 331         struct MessageUnit_A __iomem *reg = acb->pmuA;
 332         uint32_t Index;
 333         uint8_t Retries = 0x00;
 334         do {
 335                 for (Index = 0; Index < 100; Index++) {
 336                         if (readl(&reg->outbound_intstatus) &
 337                                         ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 338                                 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 339                                         &reg->outbound_intstatus);
 340                                 return true;
 341                         }
 342                         msleep(10);
 343                 }/*max 1 seconds*/
 344
 345         } while (Retries++ < 20);/*max 20 sec*/
 346         return false;
 347 }
 348
 349 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
 350 {
 351         struct MessageUnit_B *reg = acb->pmuB;
 352         uint32_t Index;
 353         uint8_t Retries = 0x00;
 354         do {
 355                 for (Index = 0; Index < 100; Index++) {
 356                         if (readl(reg->iop2drv_doorbell)
 357                                 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 358                                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
 359                                         , reg->iop2drv_doorbell);
 360                                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
 361                                 return true;
 362                         }
 363                         msleep(10);
 364                 }/*max 1 seconds*/
 365
 366         } while (Retries++ < 20);/*max 20 sec*/
 367         return false;
 368 }
 369
 370 static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
 371 {
 372         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
 373         unsigned char Retries = 0x00;
 374         uint32_t Index;
 375         do {
 376                 for (Index = 0; Index < 100; Index++) {
 377                         if (readl(&phbcmu->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 378                                 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &phbcmu->outbound_doorbell_clear);/*clear interrupt*/
 379                                 return true;
 380                         }
 381                         /* one us delay */
 382                         msleep(10);
 383                 } /*max 1 seconds*/
 384         } while (Retries++ < 20); /*max 20 sec*/
 385         return false;
 386 }
 387 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 388 {
 389         struct MessageUnit_A __iomem *reg = acb->pmuA;
 390         int retry_count = 30;
 391         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 392         do {
 393                 if (arcmsr_hba_wait_msgint_ready(acb))
 394                         break;
 395                 else {
 396                         retry_count--;
 397                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 398                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 399                 }
 400         } while (retry_count != 0);
 401 }
 402
 403 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
 404 {
 405         struct MessageUnit_B *reg = acb->pmuB;
 406         int retry_count = 30;
 407         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 408         do {
 409                 if (arcmsr_hbb_wait_msgint_ready(acb))
 410                         break;
 411                 else {
 412                         retry_count--;
 413                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 414                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 415                 }
 416         } while (retry_count != 0);
 417 }
 418
 419 static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
 420 {
 421         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 422         int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 423         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 424         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 425         do {
 426                 if (arcmsr_hbc_wait_msgint_ready(pACB)) {
 427                         break;
 428                 } else {
 429                         retry_count--;
 430                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 431                         timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 432                 }
 433         } while (retry_count != 0);
 434         return;
 435 }
 436 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 437 {
 438         switch (acb->adapter_type) {
 439
 440         case ACB_ADAPTER_TYPE_A: {
 441                 arcmsr_flush_hba_cache(acb);
 442                 }
 443                 break;
 444
 445         case ACB_ADAPTER_TYPE_B: {
 446                 arcmsr_flush_hbb_cache(acb);
 447                 }
 448                 break;
 449         case ACB_ADAPTER_TYPE_C: {
 450                 arcmsr_flush_hbc_cache(acb);
 451                 }
 452         }
 453 }
 454
 455 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 456 {
 457         struct pci_dev *pdev = acb->pdev;
 458         void *dma_coherent;
 459         dma_addr_t dma_coherent_handle;
 460         struct CommandControlBlock *ccb_tmp;
 461         int i = 0, j = 0;
 462         dma_addr_t cdb_phyaddr;
 463         unsigned long roundup_ccbsize = 0, offset;
 464         unsigned long max_xfer_len;
 465         unsigned long max_sg_entrys;
 466         uint32_t  firm_config_version;
 467         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 468                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 469                         acb->devstate[i][j] = ARECA_RAID_GONE;
 470
 471         max_xfer_len = ARCMSR_MAX_XFER_LEN;
 472         max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 473         firm_config_version = acb->firm_cfg_version;
 474         if((firm_config_version & 0xFF) >= 3){
 475                 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 476                 max_sg_entrys = (max_xfer_len/4096);
 477         }
 478         acb->host->max_sectors = max_xfer_len/512;
 479         acb->host->sg_tablesize = max_sg_entrys;
 480         roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 481         acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM + 32;
 482         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 483         if(!dma_coherent){
 484                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no);
 485                 return -ENOMEM;
 486         }
 487         acb->dma_coherent = dma_coherent;
 488         acb->dma_coherent_handle = dma_coherent_handle;
 489         memset(dma_coherent, 0, acb->uncache_size);
 490         offset = roundup((unsigned long)dma_coherent, 32) - (unsigned long)dma_coherent;
 491         dma_coherent_handle = dma_coherent_handle + offset;
 492         dma_coherent = (struct CommandControlBlock *)dma_coherent + offset;
 493         ccb_tmp = dma_coherent;
 494         acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 495         for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 496                 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 497                 ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
 498                 acb->pccb_pool[i] = ccb_tmp;
 499                 ccb_tmp->acb = acb;
 500                 INIT_LIST_HEAD(&ccb_tmp->list);
 501                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 502                 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 503                 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 504         }
 505         return 0;
 506 }
 507
 508 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
 509 {
 510         struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 511         switch (acb->adapter_type) {
 512                 case ACB_ADAPTER_TYPE_A: {
 513
 514                         struct MessageUnit_A __iomem *reg  = acb->pmuA;
 515                         char *acb_dev_map = (char *)acb->device_map;
 516                         uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
 517                         char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
 518                         int target, lun;
 519                         struct scsi_device *psdev;
 520                         char diff;
 521
 522                         atomic_inc(&acb->rq_map_token);
 523                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 524                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 525                                         diff = (*acb_dev_map)^readb(devicemap);
 526                                         if (diff != 0) {
 527                                                 char temp;
 528                                                 *acb_dev_map = readb(devicemap);
 529                                                 temp =*acb_dev_map;
 530                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 531                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 532                                                                 scsi_add_device(acb->host, 0, target, lun);
 533                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 534                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 535                                                                 if (psdev != NULL ) {
 536                                                                         scsi_remove_device(psdev);
 537                                                                         scsi_device_put(psdev);
 538                                                                 }
 539                                                         }
 540                                                         temp >>= 1;
 541                                                         diff >>= 1;
 542                                                 }
 543                                         }
 544                                         devicemap++;
 545                                         acb_dev_map++;
 546                                 }
 547                         }
 548                         break;
 549                 }
 550
 551                 case ACB_ADAPTER_TYPE_B: {
 552                         struct MessageUnit_B *reg  = acb->pmuB;
 553                         char *acb_dev_map = (char *)acb->device_map;
 554                         uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
 555                         char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
 556                         int target, lun;
 557                         struct scsi_device *psdev;
 558                         char diff;
 559
 560                         atomic_inc(&acb->rq_map_token);
 561                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 562                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 563                                         diff = (*acb_dev_map)^readb(devicemap);
 564                                         if (diff != 0) {
 565                                                 char temp;
 566                                                 *acb_dev_map = readb(devicemap);
 567                                                 temp =*acb_dev_map;
 568                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 569                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 570                                                                 scsi_add_device(acb->host, 0, target, lun);
 571                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 572                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 573                                                                 if (psdev != NULL ) {
 574                                                                         scsi_remove_device(psdev);
 575                                                                         scsi_device_put(psdev);
 576                                                                 }
 577                                                         }
 578                                                         temp >>= 1;
 579                                                         diff >>= 1;
 580                                                 }
 581                                         }
 582                                         devicemap++;
 583                                         acb_dev_map++;
 584                                 }
 585                         }
 586                 }
 587                 break;
 588                 case ACB_ADAPTER_TYPE_C: {
 589                         struct MessageUnit_C *reg  = acb->pmuC;
 590                         char *acb_dev_map = (char *)acb->device_map;
 591                         uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 592                         char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 593                         int target, lun;
 594                         struct scsi_device *psdev;
 595                         char diff;
 596
 597                         atomic_inc(&acb->rq_map_token);
 598                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 599                                 for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
 600                                         diff = (*acb_dev_map)^readb(devicemap);
 601                                         if (diff != 0) {
 602                                                 char temp;
 603                                                 *acb_dev_map = readb(devicemap);
 604                                                 temp = *acb_dev_map;
 605                                                 for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 606                                                         if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
 607                                                                 scsi_add_device(acb->host, 0, target, lun);
 608                                                         } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 609                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 610                                                                 if (psdev != NULL) {
 611                                                                         scsi_remove_device(psdev);
 612                                                                         scsi_device_put(psdev);
 613                                                                 }
 614                                                         }
 615                                                         temp >>= 1;
 616                                                         diff >>= 1;
 617                                                 }
 618                                         }
 619                                         devicemap++;
 620                                         acb_dev_map++;
 621                                 }
 622                         }
 623                 }
 624         }
 625 }
 626
 627 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 628 {
 629         struct Scsi_Host *host;
 630         struct AdapterControlBlock *acb;
 631         uint8_t bus,dev_fun;
 632         int error;
 633         error = pci_enable_device(pdev);
 634         if(error){
 635                 return -ENODEV;
 636         }
 637         host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 638         if(!host){
 639                 goto pci_disable_dev;
 640         }
 641         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 642         if(error){
 643                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 644                 if(error){
 645                         printk(KERN_WARNING
 646                                "scsi%d: No suitable DMA mask available\n",
 647                                host->host_no);
 648                         goto scsi_host_release;
 649                 }
 650         }
 651         init_waitqueue_head(&wait_q);
 652         bus = pdev->bus->number;
 653         dev_fun = pdev->devfn;
 654         acb = (struct AdapterControlBlock *) host->hostdata;
 655         memset(acb,0,sizeof(struct AdapterControlBlock));
 656         acb->pdev = pdev;
 657         acb->host = host;
 658         host->max_lun = ARCMSR_MAX_TARGETLUN;
 659         host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 660         host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 661         host->can_queue = ARCMSR_MAX_FREECCB_NUM;       /* max simultaneous cmds */
 662         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 663         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 664         host->unique_id = (bus << 8) | dev_fun;
 665         pci_set_drvdata(pdev, host);
 666         pci_set_master(pdev);
 667         error = pci_request_regions(pdev, "arcmsr");
 668         if(error){
 669                 goto scsi_host_release;
 670         }
 671         spin_lock_init(&acb->eh_lock);
 672         spin_lock_init(&acb->ccblist_lock);
 673         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 674                         ACB_F_MESSAGE_RQBUFFER_CLEARED |
 675                         ACB_F_MESSAGE_WQBUFFER_READED);
 676         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 677         INIT_LIST_HEAD(&acb->ccb_free_list);
 678         arcmsr_define_adapter_type(acb);
 679         error = arcmsr_remap_pciregion(acb);
 680         if(!error){
 681                 goto pci_release_regs;
 682         }
 683         error = arcmsr_get_firmware_spec(acb);
 684         if(!error){
 685                 goto unmap_pci_region;
 686         }
 687         error = arcmsr_alloc_ccb_pool(acb);
 688         if(error){
 689                 goto free_hbb_mu;
 690         }
 691         arcmsr_iop_init(acb);
 692         error = scsi_add_host(host, &pdev->dev);
 693         if(error){
 694                 goto RAID_controller_stop;
 695         }
 696         error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
 697         if(error){
 698                 goto scsi_host_remove;
 699         }
 700         host->irq = pdev->irq;
 701         scsi_scan_host(host);
 702         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 703         atomic_set(&acb->rq_map_token, 16);
 704         atomic_set(&acb->ante_token_value, 16);
 705         acb->fw_flag = FW_NORMAL;
 706         init_timer(&acb->eternal_timer);
 707         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 708         acb->eternal_timer.data = (unsigned long) acb;
 709         acb->eternal_timer.function = &arcmsr_request_device_map;
 710         add_timer(&acb->eternal_timer);
 711         if(arcmsr_alloc_sysfs_attr(acb))
 712                 goto out_free_sysfs;
 713         return 0;
 714 out_free_sysfs:
 715 scsi_host_remove:
 716         scsi_remove_host(host);
 717 RAID_controller_stop:
 718         arcmsr_stop_adapter_bgrb(acb);
 719         arcmsr_flush_adapter_cache(acb);
 720         arcmsr_free_ccb_pool(acb);
 721 free_hbb_mu:
 722         arcmsr_free_hbb_mu(acb);
 723 unmap_pci_region:
 724         arcmsr_unmap_pciregion(acb);
 725 pci_release_regs:
 726         pci_release_regions(pdev);
 727 scsi_host_release:
 728         scsi_host_put(host);
 729 pci_disable_dev:
 730         pci_disable_device(pdev);
 731         return -ENODEV;
 732 }
 733
 734 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 735 {
 736         struct MessageUnit_A __iomem *reg = acb->pmuA;
 737         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 738         if (!arcmsr_hba_wait_msgint_ready(acb)) {
 739                 printk(KERN_NOTICE
 740                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 741                         , acb->host->host_no);
 742                 return false;
 743         }
 744         return true;
 745 }
 746
 747 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 748 {
 749         struct MessageUnit_B *reg = acb->pmuB;
 750
 751         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 752         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 753                 printk(KERN_NOTICE
 754                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 755                         , acb->host->host_no);
 756                 return false;
 757         }
 758         return true;
 759 }
 760 static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
 761 {
 762         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 763         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 764         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 765         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
 766                 printk(KERN_NOTICE
 767                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 768                         , pACB->host->host_no);
 769                 return false;
 770         }
 771         return true;
 772 }
 773 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 774 {
 775         uint8_t rtnval = 0;
 776         switch (acb->adapter_type) {
 777         case ACB_ADAPTER_TYPE_A: {
 778                 rtnval = arcmsr_abort_hba_allcmd(acb);
 779                 }
 780                 break;
 781
 782         case ACB_ADAPTER_TYPE_B: {
 783                 rtnval = arcmsr_abort_hbb_allcmd(acb);
 784                 }
 785                 break;
 786
 787         case ACB_ADAPTER_TYPE_C: {
 788                 rtnval = arcmsr_abort_hbc_allcmd(acb);
 789                 }
 790         }
 791         return rtnval;
 792 }
 793
 794 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
 795 {
 796         struct MessageUnit_B *reg = pacb->pmuB;
 797         writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
 798         if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
 799                 printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
 800                 return false;
 801         }
 802         return true;
 803 }
 804
 805 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 806 {
 807         struct scsi_cmnd *pcmd = ccb->pcmd;
 808
 809         scsi_dma_unmap(pcmd);
 810 }
 811
 812 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 813 {
 814         struct AdapterControlBlock *acb = ccb->acb;
 815         struct scsi_cmnd *pcmd = ccb->pcmd;
 816         unsigned long flags;
 817         atomic_dec(&acb->ccboutstandingcount);
 818         arcmsr_pci_unmap_dma(ccb);
 819         ccb->startdone = ARCMSR_CCB_DONE;
 820         spin_lock_irqsave(&acb->ccblist_lock, flags);
 821         list_add_tail(&ccb->list, &acb->ccb_free_list);
 822         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 823         pcmd->scsi_done(pcmd);
 824 }
 825
 826 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 827 {
 828
 829         struct scsi_cmnd *pcmd = ccb->pcmd;
 830         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 831         pcmd->result = DID_OK << 16;
 832         if (sensebuffer) {
 833                 int sense_data_length =
 834                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 835                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 836                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 837                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 838                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 839                 sensebuffer->Valid = 1;
 840         }
 841 }
 842
 843 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 844 {
 845         u32 orig_mask = 0;
 846         switch (acb->adapter_type) {
 847         case ACB_ADAPTER_TYPE_A : {
 848                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 849                 orig_mask = readl(&reg->outbound_intmask);
 850                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 851                                                 &reg->outbound_intmask);
 852                 }
 853                 break;
 854         case ACB_ADAPTER_TYPE_B : {
 855                 struct MessageUnit_B *reg = acb->pmuB;
 856                 orig_mask = readl(reg->iop2drv_doorbell_mask);
 857                 writel(0, reg->iop2drv_doorbell_mask);
 858                 }
 859                 break;
 860         case ACB_ADAPTER_TYPE_C:{
 861                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
 862                 /* disable all outbound interrupt */
 863                 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
 864                 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
 865                 }
 866                 break;
 867         }
 868         return orig_mask;
 869 }
 870
 871 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
 872                         struct CommandControlBlock *ccb, bool error)
 873 {
 874         uint8_t id, lun;
 875         id = ccb->pcmd->device->id;
 876         lun = ccb->pcmd->device->lun;
 877         if (!error) {
 878                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 879                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 880                 ccb->pcmd->result = DID_OK << 16;
 881                 arcmsr_ccb_complete(ccb);
 882         }else{
 883                 switch (ccb->arcmsr_cdb.DeviceStatus) {
 884                 case ARCMSR_DEV_SELECT_TIMEOUT: {
 885                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 886                         ccb->pcmd->result = DID_NO_CONNECT << 16;
 887                         arcmsr_ccb_complete(ccb);
 888                         }
 889                         break;
 890
 891                 case ARCMSR_DEV_ABORTED:
 892
 893                 case ARCMSR_DEV_INIT_FAIL: {
 894                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 895                         ccb->pcmd->result = DID_BAD_TARGET << 16;
 896                         arcmsr_ccb_complete(ccb);
 897                         }
 898                         break;
 899
 900                 case ARCMSR_DEV_CHECK_CONDITION: {
 901                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 902                         arcmsr_report_sense_info(ccb);
 903                         arcmsr_ccb_complete(ccb);
 904                         }
 905                         break;
 906
 907                 default:
 908                         printk(KERN_NOTICE
 909                                 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
 910                                 but got unknown DeviceStatus = 0x%x \n"
 911                                 , acb->host->host_no
 912                                 , id
 913                                 , lun
 914                                 , ccb->arcmsr_cdb.DeviceStatus);
 915                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 916                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
 917                                 arcmsr_ccb_complete(ccb);
 918                         break;
 919                 }
 920         }
 921 }
 922
 923 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
 924
 925 {
 926         int id, lun;
 927         if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
 928                 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
 929                         struct scsi_cmnd *abortcmd = pCCB->pcmd;
 930                         if (abortcmd) {
 931                                 id = abortcmd->device->id;
 932                                 lun = abortcmd->device->lun;
 933                                 abortcmd->result |= DID_ABORT << 16;
 934                                 arcmsr_ccb_complete(pCCB);
 935                                 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
 936                                 acb->host->host_no, pCCB);
 937                         }
 938                         return;
 939                 }
 940                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 941                                 done acb = '0x%p'"
 942                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
 943                                 " ccboutstandingcount = %d \n"
 944                                 , acb->host->host_no
 945                                 , acb
 946                                 , pCCB
 947                                 , pCCB->acb
 948                                 , pCCB->startdone
 949                                 , atomic_read(&acb->ccboutstandingcount));
 950                   return;
 951                 }
 952         arcmsr_report_ccb_state(acb, pCCB, error);
 953 }
 954
 955 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 956 {
 957         int i = 0;
 958         uint32_t flag_ccb;
 959         struct ARCMSR_CDB *pARCMSR_CDB;
 960         bool error;
 961         struct CommandControlBlock *pCCB;
 962         switch (acb->adapter_type) {
 963
 964         case ACB_ADAPTER_TYPE_A: {
 965                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 966                 uint32_t outbound_intstatus;
 967                 outbound_intstatus = readl(&reg->outbound_intstatus) &
 968                                         acb->outbound_int_enable;
 969                 /*clear and abort all outbound posted Q*/
 970                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
 971                 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 972                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 973                         pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
 974                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 975                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 976                         arcmsr_drain_donequeue(acb, pCCB, error);
 977                 }
 978                 }
 979                 break;
 980
 981         case ACB_ADAPTER_TYPE_B: {
 982                 struct MessageUnit_B *reg = acb->pmuB;
 983                 /*clear all outbound posted Q*/
 984                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, &reg->iop2drv_doorbell); /* clear doorbell interrupt */
 985                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 986                         if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 987                                 writel(0, &reg->done_qbuffer[i]);
 988                                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
 989                                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 990                                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 991                                 arcmsr_drain_donequeue(acb, pCCB, error);
 992                         }
 993                         reg->post_qbuffer[i] = 0;
 994                 }
 995                 reg->doneq_index = 0;
 996                 reg->postq_index = 0;
 997                 }
 998                 break;
 999         case ACB_ADAPTER_TYPE_C: {
1000                 struct MessageUnit_C *reg = acb->pmuC;
1001                 struct  ARCMSR_CDB *pARCMSR_CDB;
1002                 uint32_t flag_ccb, ccb_cdb_phy;
1003                 bool error;
1004                 struct CommandControlBlock *pCCB;
1005                 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1006                         /*need to do*/
1007                         flag_ccb = readl(&reg->outbound_queueport_low);
1008                         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1009                         pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
1010                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1011                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1012                         arcmsr_drain_donequeue(acb, pCCB, error);
1013                 }
1014         }
1015         }
1016 }
1017 static void arcmsr_remove(struct pci_dev *pdev)
1018 {
1019         struct Scsi_Host *host = pci_get_drvdata(pdev);
1020         struct AdapterControlBlock *acb =
1021                 (struct AdapterControlBlock *) host->hostdata;
1022         int poll_count = 0;
1023         arcmsr_free_sysfs_attr(acb);
1024         scsi_remove_host(host);
1025         flush_scheduled_work();
1026         del_timer_sync(&acb->eternal_timer);
1027         arcmsr_disable_outbound_ints(acb);
1028         arcmsr_stop_adapter_bgrb(acb);
1029         arcmsr_flush_adapter_cache(acb);
1030         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1031         acb->acb_flags &= ~ACB_F_IOP_INITED;
1032
1033         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1034                 if (!atomic_read(&acb->ccboutstandingcount))
1035                         break;
1036                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1037                 msleep(25);
1038         }
1039
1040         if (atomic_read(&acb->ccboutstandingcount)) {
1041                 int i;
1042
1043                 arcmsr_abort_allcmd(acb);
1044                 arcmsr_done4abort_postqueue(acb);
1045                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1046                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
1047                         if (ccb->startdone == ARCMSR_CCB_START) {
1048                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1049                                 ccb->pcmd->result = DID_ABORT << 16;
1050                                 arcmsr_ccb_complete(ccb);
1051                         }
1052                 }
1053         }
1054         free_irq(pdev->irq, acb);
1055         arcmsr_free_ccb_pool(acb);
1056         arcmsr_free_hbb_mu(acb);
1057         arcmsr_unmap_pciregion(acb);
1058         pci_release_regions(pdev);
1059         scsi_host_put(host);
1060         pci_disable_device(pdev);
1061         pci_set_drvdata(pdev, NULL);
1062 }
1063
1064 static void arcmsr_shutdown(struct pci_dev *pdev)
1065 {
1066         struct Scsi_Host *host = pci_get_drvdata(pdev);
1067         struct AdapterControlBlock *acb =
1068                 (struct AdapterControlBlock *)host->hostdata;
1069         del_timer_sync(&acb->eternal_timer);
1070         arcmsr_disable_outbound_ints(acb);
1071         flush_scheduled_work();
1072         arcmsr_stop_adapter_bgrb(acb);
1073         arcmsr_flush_adapter_cache(acb);
1074 }
1075
1076 static int arcmsr_module_init(void)
1077 {
1078         int error = 0;
1079         error = pci_register_driver(&arcmsr_pci_driver);
1080         return error;
1081 }
1082
1083 static void arcmsr_module_exit(void)
1084 {
1085         pci_unregister_driver(&arcmsr_pci_driver);
1086 }
1087 module_init(arcmsr_module_init);
1088 module_exit(arcmsr_module_exit);
1089
1090 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1091                                                 u32 intmask_org)
1092 {
1093         u32 mask;
1094         switch (acb->adapter_type) {
1095
1096         case ACB_ADAPTER_TYPE_A: {
1097                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1098                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1099                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1100                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1101                 writel(mask, &reg->outbound_intmask);
1102                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1103                 }
1104                 break;
1105
1106         case ACB_ADAPTER_TYPE_B: {
1107                 struct MessageUnit_B *reg = acb->pmuB;
1108                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1109                         ARCMSR_IOP2DRV_DATA_READ_OK |
1110                         ARCMSR_IOP2DRV_CDB_DONE |
1111                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1112                 writel(mask, reg->iop2drv_doorbell_mask);
1113                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1114                 }
1115                 break;
1116         case ACB_ADAPTER_TYPE_C: {
1117                 struct MessageUnit_C *reg = acb->pmuC;
1118                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1119                 writel(intmask_org & mask, &reg->host_int_mask);
1120                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1121                 }
1122         }
1123 }
1124
1125 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1126         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1127 {
1128         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1129         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1130         __le32 address_lo, address_hi;
1131         int arccdbsize = 0x30;
1132         __le32 length = 0;
1133         int i;
1134         struct scatterlist *sg;
1135         int nseg;
1136         ccb->pcmd = pcmd;
1137         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1138         arcmsr_cdb->TargetID = pcmd->device->id;
1139         arcmsr_cdb->LUN = pcmd->device->lun;
1140         arcmsr_cdb->Function = 1;
1141         arcmsr_cdb->Context = 0;
1142         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1143
1144         nseg = scsi_dma_map(pcmd);
1145         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1146                 return FAILED;
1147         scsi_for_each_sg(pcmd, sg, nseg, i) {
1148                 /* Get the physical address of the current data pointer */
1149                 length = cpu_to_le32(sg_dma_len(sg));
1150                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1151                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1152                 if (address_hi == 0) {
1153                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1154
1155                         pdma_sg->address = address_lo;
1156                         pdma_sg->length = length;
1157                         psge += sizeof (struct SG32ENTRY);
1158                         arccdbsize += sizeof (struct SG32ENTRY);
1159                 } else {
1160                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1161
1162                         pdma_sg->addresshigh = address_hi;
1163                         pdma_sg->address = address_lo;
1164                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1165                         psge += sizeof (struct SG64ENTRY);
1166                         arccdbsize += sizeof (struct SG64ENTRY);
1167                 }
1168         }
1169         arcmsr_cdb->sgcount = (uint8_t)nseg;
1170         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1171         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1172         if ( arccdbsize > 256)
1173                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1174         if (pcmd->cmnd[0]|WRITE_6 || pcmd->cmnd[0]|WRITE_10 || pcmd->cmnd[0]|WRITE_12 ){
1175                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1176         }
1177         ccb->arc_cdb_size = arccdbsize;
1178         return SUCCESS;
1179 }
1180
1181 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1182 {
1183         uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1184         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1185         atomic_inc(&acb->ccboutstandingcount);
1186         ccb->startdone = ARCMSR_CCB_START;
1187         switch (acb->adapter_type) {
1188         case ACB_ADAPTER_TYPE_A: {
1189                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1190
1191                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1192                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1193                         &reg->inbound_queueport);
1194                 else {
1195                                 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1196                 }
1197                 }
1198                 break;
1199
1200         case ACB_ADAPTER_TYPE_B: {
1201                 struct MessageUnit_B *reg = acb->pmuB;
1202                 uint32_t ending_index, index = reg->postq_index;
1203
1204                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1205                 writel(0, &reg->post_qbuffer[ending_index]);
1206                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1207                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1208                                                  &reg->post_qbuffer[index]);
1209                 } else {
1210                         writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1211                 }
1212                 index++;
1213                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1214                 reg->postq_index = index;
1215                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1216                 }
1217                 break;
1218         case ACB_ADAPTER_TYPE_C: {
1219                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1220                 uint32_t ccb_post_stamp, arc_cdb_size;
1221
1222                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1223                 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1224                 if (acb->cdb_phyaddr_hi32) {
1225                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1226                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1227                 } else {
1228                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1229                 }
1230                 }
1231         }
1232 }
1233
1234 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1235 {
1236         struct MessageUnit_A __iomem *reg = acb->pmuA;
1237         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1238         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1239         if (!arcmsr_hba_wait_msgint_ready(acb)) {
1240                 printk(KERN_NOTICE
1241                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1242                         , acb->host->host_no);
1243         }
1244 }
1245
1246 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1247 {
1248         struct MessageUnit_B *reg = acb->pmuB;
1249         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1250         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1251
1252         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1253                 printk(KERN_NOTICE
1254                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1255                         , acb->host->host_no);
1256         }
1257 }
1258
1259 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1260 {
1261         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1262         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1263         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1264         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1265         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1266                 printk(KERN_NOTICE
1267                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1268                         , pACB->host->host_no);
1269         }
1270         return;
1271 }
1272 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1273 {
1274         switch (acb->adapter_type) {
1275         case ACB_ADAPTER_TYPE_A: {
1276                 arcmsr_stop_hba_bgrb(acb);
1277                 }
1278                 break;
1279
1280         case ACB_ADAPTER_TYPE_B: {
1281                 arcmsr_stop_hbb_bgrb(acb);
1282                 }
1283                 break;
1284         case ACB_ADAPTER_TYPE_C: {
1285                 arcmsr_stop_hbc_bgrb(acb);
1286                 }
1287         }
1288 }
1289
1290 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1291 {
1292         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1293 }
1294
1295 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1296 {
1297         switch (acb->adapter_type) {
1298         case ACB_ADAPTER_TYPE_A: {
1299                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1300                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1301                 }
1302                 break;
1303
1304         case ACB_ADAPTER_TYPE_B: {
1305                 struct MessageUnit_B *reg = acb->pmuB;
1306                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1307                 }
1308                 break;
1309         case ACB_ADAPTER_TYPE_C: {
1310                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1311                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1312                 }
1313         }
1314 }
1315
1316 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1317 {
1318         switch (acb->adapter_type) {
1319         case ACB_ADAPTER_TYPE_A: {
1320                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1321                 /*
1322                 ** push inbound doorbell tell iop, driver data write ok
1323                 ** and wait reply on next hwinterrupt for next Qbuffer post
1324                 */
1325                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1326                 }
1327                 break;
1328
1329         case ACB_ADAPTER_TYPE_B: {
1330                 struct MessageUnit_B *reg = acb->pmuB;
1331                 /*
1332                 ** push inbound doorbell tell iop, driver data write ok
1333                 ** and wait reply on next hwinterrupt for next Qbuffer post
1334                 */
1335                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1336                 }
1337                 break;
1338         case ACB_ADAPTER_TYPE_C: {
1339                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1340                 /*
1341                 ** push inbound doorbell tell iop, driver data write ok
1342                 ** and wait reply on next hwinterrupt for next Qbuffer post
1343                 */
1344                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1345                 }
1346                 break;
1347         }
1348 }
1349
1350 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1351 {
1352         struct QBUFFER __iomem *qbuffer = NULL;
1353         switch (acb->adapter_type) {
1354
1355         case ACB_ADAPTER_TYPE_A: {
1356                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1357                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1358                 }
1359                 break;
1360
1361         case ACB_ADAPTER_TYPE_B: {
1362                 struct MessageUnit_B *reg = acb->pmuB;
1363                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1364                 }
1365                 break;
1366         case ACB_ADAPTER_TYPE_C: {
1367                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1368                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1369                 }
1370         }
1371         return qbuffer;
1372 }
1373
1374 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1375 {
1376         struct QBUFFER __iomem *pqbuffer = NULL;
1377         switch (acb->adapter_type) {
1378
1379         case ACB_ADAPTER_TYPE_A: {
1380                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1381                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1382                 }
1383                 break;
1384
1385         case ACB_ADAPTER_TYPE_B: {
1386                 struct MessageUnit_B  *reg = acb->pmuB;
1387                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1388                 }
1389                 break;
1390         case ACB_ADAPTER_TYPE_C: {
1391                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1392                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1393         }
1394
1395         }
1396         return pqbuffer;
1397 }
1398
1399 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1400 {
1401         struct QBUFFER __iomem *prbuffer;
1402         struct QBUFFER *pQbuffer;
1403         uint8_t __iomem *iop_data;
1404         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1405         rqbuf_lastindex = acb->rqbuf_lastindex;
1406         rqbuf_firstindex = acb->rqbuf_firstindex;
1407         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1408         iop_data = (uint8_t __iomem *)prbuffer->data;
1409         iop_len = prbuffer->data_len;
1410         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1411
1412         if (my_empty_len >= iop_len)
1413         {
1414                 while (iop_len > 0) {
1415                         pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1416                         memcpy(pQbuffer, iop_data, 1);
1417                         rqbuf_lastindex++;
1418                         rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1419                         iop_data++;
1420                         iop_len--;
1421                 }
1422                 acb->rqbuf_lastindex = rqbuf_lastindex;
1423                 arcmsr_iop_message_read(acb);
1424         }
1425
1426         else {
1427                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1428         }
1429 }
1430
1431 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1432 {
1433         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1434         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1435                 uint8_t *pQbuffer;
1436                 struct QBUFFER __iomem *pwbuffer;
1437                 uint8_t __iomem *iop_data;
1438                 int32_t allxfer_len = 0;
1439
1440                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1441                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1442                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1443
1444                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1445                                                         (allxfer_len < 124)) {
1446                         pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1447                         memcpy(iop_data, pQbuffer, 1);
1448                         acb->wqbuf_firstindex++;
1449                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1450                         iop_data++;
1451                         allxfer_len++;
1452                 }
1453                 pwbuffer->data_len = allxfer_len;
1454
1455                 arcmsr_iop_message_wrote(acb);
1456         }
1457
1458         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1459                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1460         }
1461 }
1462
1463 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1464 {
1465         uint32_t outbound_doorbell;
1466         struct MessageUnit_A __iomem *reg = acb->pmuA;
1467         outbound_doorbell = readl(&reg->outbound_doorbell);
1468         writel(outbound_doorbell, &reg->outbound_doorbell);
1469         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1470                 arcmsr_iop2drv_data_wrote_handle(acb);
1471         }
1472
1473         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1474                 arcmsr_iop2drv_data_read_handle(acb);
1475         }
1476 }
1477 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1478 {
1479         uint32_t outbound_doorbell;
1480         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1481         /*
1482         *******************************************************************
1483         **  Maybe here we need to check wrqbuffer_lock is lock or not
1484         **  DOORBELL: din! don!
1485         **  check if there are any mail need to pack from firmware
1486         *******************************************************************
1487         */
1488         outbound_doorbell = readl(&reg->outbound_doorbell);
1489         writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1490         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1491                 arcmsr_iop2drv_data_wrote_handle(pACB);
1492         }
1493         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1494                 arcmsr_iop2drv_data_read_handle(pACB);
1495         }
1496         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1497                 arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
1498         }
1499         return;
1500 }
1501 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1502 {
1503         uint32_t flag_ccb;
1504         struct MessageUnit_A __iomem *reg = acb->pmuA;
1505         struct ARCMSR_CDB *pARCMSR_CDB;
1506         struct CommandControlBlock *pCCB;
1507         bool error;
1508         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1509                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1510                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1511                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1512                 arcmsr_drain_donequeue(acb, pCCB, error);
1513         }
1514 }
1515
1516 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1517 {
1518         uint32_t index;
1519         uint32_t flag_ccb;
1520         struct MessageUnit_B *reg = acb->pmuB;
1521         struct ARCMSR_CDB *pARCMSR_CDB;
1522         struct CommandControlBlock *pCCB;
1523         bool error;
1524         index = reg->doneq_index;
1525         while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1526                 writel(0, &reg->done_qbuffer[index]);
1527                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1528                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1529                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1530                 arcmsr_drain_donequeue(acb, pCCB, error);
1531                 index++;
1532                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1533                 reg->doneq_index = index;
1534         }
1535 }
1536
1537 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1538 {
1539         struct MessageUnit_C *phbcmu;
1540         struct ARCMSR_CDB *arcmsr_cdb;
1541         struct CommandControlBlock *ccb;
1542         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1543         int error;
1544
1545         phbcmu = (struct MessageUnit_C *)acb->pmuC;
1546         /* areca cdb command done */
1547         /* Use correct offset and size for syncing */
1548
1549         while (readl(&phbcmu->host_int_status) &
1550         ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1551         /* check if command done with no error*/
1552         flag_ccb = readl(&phbcmu->outbound_queueport_low);
1553         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1554         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1555         ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1556         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1557         /* check if command done with no error */
1558         arcmsr_drain_donequeue(acb, ccb, error);
1559         if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1560                 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1561                 break;
1562         }
1563         throttling++;
1564         }
1565 }
1566 /*
1567 **********************************************************************************
1568 ** Handle a message interrupt
1569 **
1570 ** The only message interrupt we expect is in response to a query for the current adapter config.
1571 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1572 **********************************************************************************
1573 */
1574 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1575 {
1576         struct MessageUnit_A *reg  = acb->pmuA;
1577         /*clear interrupt and message state*/
1578         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1579         schedule_work(&acb->arcmsr_do_message_isr_bh);
1580 }
1581 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1582 {
1583         struct MessageUnit_B *reg  = acb->pmuB;
1584
1585         /*clear interrupt and message state*/
1586         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1587         schedule_work(&acb->arcmsr_do_message_isr_bh);
1588 }
1589 /*
1590 **********************************************************************************
1591 ** Handle a message interrupt
1592 **
1593 ** The only message interrupt we expect is in response to a query for the
1594 ** current adapter config.
1595 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1596 **********************************************************************************
1597 */
1598 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1599 {
1600         struct MessageUnit_C *reg  = acb->pmuC;
1601         /*clear interrupt and message state*/
1602         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1603         schedule_work(&acb->arcmsr_do_message_isr_bh);
1604 }
1605
1606 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1607 {
1608         uint32_t outbound_intstatus;
1609         struct MessageUnit_A __iomem *reg = acb->pmuA;
1610         outbound_intstatus = readl(&reg->outbound_intstatus) &
1611                 acb->outbound_int_enable;
1612         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1613                 return 1;
1614         }
1615         writel(outbound_intstatus, &reg->outbound_intstatus);
1616         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1617                 arcmsr_hba_doorbell_isr(acb);
1618         }
1619         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1620                 arcmsr_hba_postqueue_isr(acb);
1621         }
1622         if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)        {
1623                 /* messenger of "driver to iop commands" */
1624                 arcmsr_hba_message_isr(acb);
1625         }
1626         return 0;
1627 }
1628
1629 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1630 {
1631         uint32_t outbound_doorbell;
1632         struct MessageUnit_B *reg = acb->pmuB;
1633         outbound_doorbell = readl(reg->iop2drv_doorbell) &
1634                                 acb->outbound_int_enable;
1635         if (!outbound_doorbell)
1636                 return 1;
1637
1638         writel(~outbound_doorbell, reg->iop2drv_doorbell);
1639         /*in case the last action of doorbell interrupt clearance is cached,
1640         this action can push HW to write down the clear bit*/
1641         readl(reg->iop2drv_doorbell);
1642         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1643         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1644                 arcmsr_iop2drv_data_wrote_handle(acb);
1645         }
1646         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1647                 arcmsr_iop2drv_data_read_handle(acb);
1648         }
1649         if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1650                 arcmsr_hbb_postqueue_isr(acb);
1651         }
1652         if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1653                 /* messenger of "driver to iop commands" */
1654                 arcmsr_hbb_message_isr(acb);
1655         }
1656         return 0;
1657 }
1658
1659 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1660 {
1661         uint32_t host_interrupt_status;
1662         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1663         /*
1664         *********************************************
1665         **   check outbound intstatus
1666         *********************************************
1667         */
1668         host_interrupt_status = readl(&phbcmu->host_int_status);
1669         if (!host_interrupt_status) {
1670                 /*it must be share irq*/
1671                 return 1;
1672         }
1673         /* MU ioctl transfer doorbell interrupts*/
1674         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1675                 arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
1676         }
1677         /* MU post queue interrupts*/
1678         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1679                 arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
1680         }
1681         return 0;
1682 }
1683 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1684 {
1685         switch (acb->adapter_type) {
1686         case ACB_ADAPTER_TYPE_A: {
1687                 if (arcmsr_handle_hba_isr(acb)) {
1688                         return IRQ_NONE;
1689                 }
1690                 }
1691                 break;
1692
1693         case ACB_ADAPTER_TYPE_B: {
1694                 if (arcmsr_handle_hbb_isr(acb)) {
1695                         return IRQ_NONE;
1696                 }
1697                 }
1698                 break;
1699          case ACB_ADAPTER_TYPE_C: {
1700                 if (arcmsr_handle_hbc_isr(acb)) {
1701                         return IRQ_NONE;
1702                 }
1703                 }
1704         }
1705         return IRQ_HANDLED;
1706 }
1707
1708 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1709 {
1710         if (acb) {
1711                 /* stop adapter background rebuild */
1712                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1713                         uint32_t intmask_org;
1714                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1715                         intmask_org = arcmsr_disable_outbound_ints(acb);
1716                         arcmsr_stop_adapter_bgrb(acb);
1717                         arcmsr_flush_adapter_cache(acb);
1718                         arcmsr_enable_outbound_ints(acb, intmask_org);
1719                 }
1720         }
1721 }
1722
1723 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1724 {
1725         int32_t wqbuf_firstindex, wqbuf_lastindex;
1726         uint8_t *pQbuffer;
1727         struct QBUFFER __iomem *pwbuffer;
1728         uint8_t __iomem *iop_data;
1729         int32_t allxfer_len = 0;
1730         pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1731         iop_data = (uint8_t __iomem *)pwbuffer->data;
1732         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1733                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1734                 wqbuf_firstindex = acb->wqbuf_firstindex;
1735                 wqbuf_lastindex = acb->wqbuf_lastindex;
1736                 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1737                         pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1738                         memcpy(iop_data, pQbuffer, 1);
1739                         wqbuf_firstindex++;
1740                         wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1741                         iop_data++;
1742                         allxfer_len++;
1743                 }
1744                 acb->wqbuf_firstindex = wqbuf_firstindex;
1745                 pwbuffer->data_len = allxfer_len;
1746                 arcmsr_iop_message_wrote(acb);
1747         }
1748 }
1749
1750 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1751                                         struct scsi_cmnd *cmd)
1752 {
1753         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1754         int retvalue = 0, transfer_len = 0;
1755         char *buffer;
1756         struct scatterlist *sg;
1757         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1758                                                 (uint32_t ) cmd->cmnd[6] << 16 |
1759                                                 (uint32_t ) cmd->cmnd[7] << 8  |
1760                                                 (uint32_t ) cmd->cmnd[8];
1761                                                 /* 4 bytes: Areca io control code */
1762         sg = scsi_sglist(cmd);
1763         buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1764         if (scsi_sg_count(cmd) > 1) {
1765                 retvalue = ARCMSR_MESSAGE_FAIL;
1766                 goto message_out;
1767         }
1768         transfer_len += sg->length;
1769
1770         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1771                 retvalue = ARCMSR_MESSAGE_FAIL;
1772                 goto message_out;
1773         }
1774         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1775         switch(controlcode) {
1776
1777         case ARCMSR_MESSAGE_READ_RQBUFFER: {
1778                 unsigned char *ver_addr;
1779                 uint8_t *pQbuffer, *ptmpQbuffer;
1780                 int32_t allxfer_len = 0;
1781
1782                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1783                 if (!ver_addr) {
1784                         retvalue = ARCMSR_MESSAGE_FAIL;
1785                         goto message_out;
1786                 }
1787
1788                 ptmpQbuffer = ver_addr;
1789                 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1790                         && (allxfer_len < 1031)) {
1791                         pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1792                         memcpy(ptmpQbuffer, pQbuffer, 1);
1793                         acb->rqbuf_firstindex++;
1794                         acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1795                         ptmpQbuffer++;
1796                         allxfer_len++;
1797                 }
1798                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1799
1800                         struct QBUFFER __iomem *prbuffer;
1801                         uint8_t __iomem *iop_data;
1802                         int32_t iop_len;
1803
1804                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1805                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1806                         iop_data = prbuffer->data;
1807                         iop_len = readl(&prbuffer->data_len);
1808                         while (iop_len > 0) {
1809                                 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1810                                 acb->rqbuf_lastindex++;
1811                                 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1812                                 iop_data++;
1813                                 iop_len--;
1814                         }
1815                         arcmsr_iop_message_read(acb);
1816                 }
1817                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1818                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1819                 if(acb->fw_flag == FW_DEADLOCK) {
1820                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1821                 }else{
1822                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1823                 }
1824                 kfree(ver_addr);
1825                 }
1826                 break;
1827
1828         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1829                 unsigned char *ver_addr;
1830                 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1831                 uint8_t *pQbuffer, *ptmpuserbuffer;
1832
1833                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1834                 if (!ver_addr) {
1835                         retvalue = ARCMSR_MESSAGE_FAIL;
1836                         goto message_out;
1837                 }
1838                 if(acb->fw_flag == FW_DEADLOCK) {
1839                         pcmdmessagefld->cmdmessage.ReturnCode =
1840                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1841                 }else{
1842                         pcmdmessagefld->cmdmessage.ReturnCode =
1843                         ARCMSR_MESSAGE_RETURNCODE_OK;
1844                 }
1845                 ptmpuserbuffer = ver_addr;
1846                 user_len = pcmdmessagefld->cmdmessage.Length;
1847                 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1848                 wqbuf_lastindex = acb->wqbuf_lastindex;
1849                 wqbuf_firstindex = acb->wqbuf_firstindex;
1850                 if (wqbuf_lastindex != wqbuf_firstindex) {
1851                         struct SENSE_DATA *sensebuffer =
1852                                 (struct SENSE_DATA *)cmd->sense_buffer;
1853                         arcmsr_post_ioctldata2iop(acb);
1854                         /* has error report sensedata */
1855                         sensebuffer->ErrorCode = 0x70;
1856                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
1857                         sensebuffer->AdditionalSenseLength = 0x0A;
1858                         sensebuffer->AdditionalSenseCode = 0x20;
1859                         sensebuffer->Valid = 1;
1860                         retvalue = ARCMSR_MESSAGE_FAIL;
1861                 } else {
1862                         my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1863                                 &(ARCMSR_MAX_QBUFFER - 1);
1864                         if (my_empty_len >= user_len) {
1865                                 while (user_len > 0) {
1866                                         pQbuffer =
1867                                         &acb->wqbuffer[acb->wqbuf_lastindex];
1868                                         memcpy(pQbuffer, ptmpuserbuffer, 1);
1869                                         acb->wqbuf_lastindex++;
1870                                         acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1871                                         ptmpuserbuffer++;
1872                                         user_len--;
1873                                 }
1874                                 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1875                                         acb->acb_flags &=
1876                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1877                                         arcmsr_post_ioctldata2iop(acb);
1878                                 }
1879                         } else {
1880                                 /* has error report sensedata */
1881                                 struct SENSE_DATA *sensebuffer =
1882                                         (struct SENSE_DATA *)cmd->sense_buffer;
1883                                 sensebuffer->ErrorCode = 0x70;
1884                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1885                                 sensebuffer->AdditionalSenseLength = 0x0A;
1886                                 sensebuffer->AdditionalSenseCode = 0x20;
1887                                 sensebuffer->Valid = 1;
1888                                 retvalue = ARCMSR_MESSAGE_FAIL;
1889                         }
1890                         }
1891                         kfree(ver_addr);
1892                 }
1893                 break;
1894
1895         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1896                 uint8_t *pQbuffer = acb->rqbuffer;
1897                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1898                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1899                         arcmsr_iop_message_read(acb);
1900                 }
1901                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1902                 acb->rqbuf_firstindex = 0;
1903                 acb->rqbuf_lastindex = 0;
1904                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1905                 if(acb->fw_flag == FW_DEADLOCK) {
1906                         pcmdmessagefld->cmdmessage.ReturnCode =
1907                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1908                 }else{
1909                         pcmdmessagefld->cmdmessage.ReturnCode =
1910                         ARCMSR_MESSAGE_RETURNCODE_OK;
1911                 }
1912                 }
1913                 break;
1914
1915         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1916                 uint8_t *pQbuffer = acb->wqbuffer;
1917                 if(acb->fw_flag == FW_DEADLOCK) {
1918                         pcmdmessagefld->cmdmessage.ReturnCode =
1919                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1920                 }else{
1921                         pcmdmessagefld->cmdmessage.ReturnCode =
1922                         ARCMSR_MESSAGE_RETURNCODE_OK;
1923                 }
1924
1925                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1926                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1927                         arcmsr_iop_message_read(acb);
1928                 }
1929                 acb->acb_flags |=
1930                         (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1931                                 ACB_F_MESSAGE_WQBUFFER_READED);
1932                 acb->wqbuf_firstindex = 0;
1933                 acb->wqbuf_lastindex = 0;
1934                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1935                 }
1936                 break;
1937
1938         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1939                 uint8_t *pQbuffer;
1940
1941                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1942                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1943                         arcmsr_iop_message_read(acb);
1944                 }
1945                 acb->acb_flags |=
1946                         (ACB_F_MESSAGE_WQBUFFER_CLEARED
1947                         | ACB_F_MESSAGE_RQBUFFER_CLEARED
1948                         | ACB_F_MESSAGE_WQBUFFER_READED);
1949                 acb->rqbuf_firstindex = 0;
1950                 acb->rqbuf_lastindex = 0;
1951                 acb->wqbuf_firstindex = 0;
1952                 acb->wqbuf_lastindex = 0;
1953                 pQbuffer = acb->rqbuffer;
1954                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1955                 pQbuffer = acb->wqbuffer;
1956                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1957                 if(acb->fw_flag == FW_DEADLOCK) {
1958                         pcmdmessagefld->cmdmessage.ReturnCode =
1959                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1960                 }else{
1961                         pcmdmessagefld->cmdmessage.ReturnCode =
1962                         ARCMSR_MESSAGE_RETURNCODE_OK;
1963                 }
1964                 }
1965                 break;
1966
1967         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1968                 if(acb->fw_flag == FW_DEADLOCK) {
1969                         pcmdmessagefld->cmdmessage.ReturnCode =
1970                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1971                 }else{
1972                         pcmdmessagefld->cmdmessage.ReturnCode =
1973                         ARCMSR_MESSAGE_RETURNCODE_3F;
1974                 }
1975                 break;
1976                 }
1977         case ARCMSR_MESSAGE_SAY_HELLO: {
1978                 int8_t *hello_string = "Hello! I am ARCMSR";
1979                 if(acb->fw_flag == FW_DEADLOCK) {
1980                         pcmdmessagefld->cmdmessage.ReturnCode =
1981                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1982                 }else{
1983                         pcmdmessagefld->cmdmessage.ReturnCode =
1984                         ARCMSR_MESSAGE_RETURNCODE_OK;
1985                 }
1986                 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1987                         , (int16_t)strlen(hello_string));
1988                 }
1989                 break;
1990
1991         case ARCMSR_MESSAGE_SAY_GOODBYE:
1992                 if(acb->fw_flag == FW_DEADLOCK) {
1993                         pcmdmessagefld->cmdmessage.ReturnCode =
1994                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1995                 }
1996                 arcmsr_iop_parking(acb);
1997                 break;
1998
1999         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
2000                 if(acb->fw_flag == FW_DEADLOCK) {
2001                         pcmdmessagefld->cmdmessage.ReturnCode =
2002                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2003                 }
2004                 arcmsr_flush_adapter_cache(acb);
2005                 break;
2006
2007         default:
2008                 retvalue = ARCMSR_MESSAGE_FAIL;
2009         }
2010         message_out:
2011         sg = scsi_sglist(cmd);
2012         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2013         return retvalue;
2014 }
2015
2016 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
2017 {
2018         struct list_head *head = &acb->ccb_free_list;
2019         struct CommandControlBlock *ccb = NULL;
2020         unsigned long flags;
2021         spin_lock_irqsave(&acb->ccblist_lock, flags);
2022         if (!list_empty(head)) {
2023                 ccb = list_entry(head->next, struct CommandControlBlock, list);
2024                 list_del_init(&ccb->list);
2025         }else{
2026                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2027                 return 0;
2028         }
2029         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2030         return ccb;
2031 }
2032
2033 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2034                 struct scsi_cmnd *cmd)
2035 {
2036         switch (cmd->cmnd[0]) {
2037         case INQUIRY: {
2038                 unsigned char inqdata[36];
2039                 char *buffer;
2040                 struct scatterlist *sg;
2041
2042                 if (cmd->device->lun) {
2043                         cmd->result = (DID_TIME_OUT << 16);
2044                         cmd->scsi_done(cmd);
2045                         return;
2046                 }
2047                 inqdata[0] = TYPE_PROCESSOR;
2048                 /* Periph Qualifier & Periph Dev Type */
2049                 inqdata[1] = 0;
2050                 /* rem media bit & Dev Type Modifier */
2051                 inqdata[2] = 0;
2052                 /* ISO, ECMA, & ANSI versions */
2053                 inqdata[4] = 31;
2054                 /* length of additional data */
2055                 strncpy(&inqdata[8], "Areca   ", 8);
2056                 /* Vendor Identification */
2057                 strncpy(&inqdata[16], "RAID controller ", 16);
2058                 /* Product Identification */
2059                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2060
2061                 sg = scsi_sglist(cmd);
2062                 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
2063
2064                 memcpy(buffer, inqdata, sizeof(inqdata));
2065                 sg = scsi_sglist(cmd);
2066                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2067
2068                 cmd->scsi_done(cmd);
2069         }
2070         break;
2071         case WRITE_BUFFER:
2072         case READ_BUFFER: {
2073                 if (arcmsr_iop_message_xfer(acb, cmd))
2074                         cmd->result = (DID_ERROR << 16);
2075                 cmd->scsi_done(cmd);
2076         }
2077         break;
2078         default:
2079                 cmd->scsi_done(cmd);
2080         }
2081 }
2082
2083 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2084         void (* done)(struct scsi_cmnd *))
2085 {
2086         struct Scsi_Host *host = cmd->device->host;
2087         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2088         struct CommandControlBlock *ccb;
2089         int target = cmd->device->id;
2090         int lun = cmd->device->lun;
2091         uint8_t scsicmd = cmd->cmnd[0];
2092         cmd->scsi_done = done;
2093         cmd->host_scribble = NULL;
2094         cmd->result = 0;
2095         if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2096                 if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2097                         cmd->result = (DID_NO_CONNECT << 16);
2098                 }
2099                 cmd->scsi_done(cmd);
2100                 return 0;
2101         }
2102         if (target == 16) {
2103                 /* virtual device for iop message transfer */
2104                 arcmsr_handle_virtual_command(acb, cmd);
2105                 return 0;
2106         }
2107         if (atomic_read(&acb->ccboutstandingcount) >=
2108                         ARCMSR_MAX_OUTSTANDING_CMD)
2109                 return SCSI_MLQUEUE_HOST_BUSY;
2110         if ((scsicmd == SCSI_CMD_ARECA_SPECIFIC)) {
2111                 printk(KERN_NOTICE "Receiveing SCSI_CMD_ARECA_SPECIFIC command..\n");
2112                 return 0;
2113         }
2114         ccb = arcmsr_get_freeccb(acb);
2115         if (!ccb)
2116                 return SCSI_MLQUEUE_HOST_BUSY;
2117         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2118                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2119                 cmd->scsi_done(cmd);
2120                 return 0;
2121         }
2122         arcmsr_post_ccb(acb, ccb);
2123         return 0;
2124 }
2125
2126 static DEF_SCSI_QCMD(arcmsr_queue_command)
2127
2128 static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2129 {
2130         struct MessageUnit_A __iomem *reg = acb->pmuA;
2131         char *acb_firm_model = acb->firm_model;
2132         char *acb_firm_version = acb->firm_version;
2133         char *acb_device_map = acb->device_map;
2134         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2135         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2136         char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2137         int count;
2138         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2139         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2140                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2141                         miscellaneous data' timeout \n", acb->host->host_no);
2142                 return false;
2143         }
2144         count = 8;
2145         while (count){
2146                 *acb_firm_model = readb(iop_firm_model);
2147                 acb_firm_model++;
2148                 iop_firm_model++;
2149                 count--;
2150         }
2151
2152         count = 16;
2153         while (count){
2154                 *acb_firm_version = readb(iop_firm_version);
2155                 acb_firm_version++;
2156                 iop_firm_version++;
2157                 count--;
2158         }
2159
2160         count=16;
2161         while(count){
2162                 *acb_device_map = readb(iop_device_map);
2163                 acb_device_map++;
2164                 iop_device_map++;
2165                 count--;
2166         }
2167         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2168                 acb->host->host_no,
2169                 acb->firm_version,
2170                 acb->firm_model);
2171         acb->signature = readl(&reg->message_rwbuffer[0]);
2172         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2173         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2174         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2175         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2176         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2177         return true;
2178 }
2179 static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2180 {
2181         struct MessageUnit_B *reg = acb->pmuB;
2182         struct pci_dev *pdev = acb->pdev;
2183         void *dma_coherent;
2184         dma_addr_t dma_coherent_handle;
2185         char *acb_firm_model = acb->firm_model;
2186         char *acb_firm_version = acb->firm_version;
2187         char *acb_device_map = acb->device_map;
2188         char __iomem *iop_firm_model;
2189         /*firm_model,15,60-67*/
2190         char __iomem *iop_firm_version;
2191         /*firm_version,17,68-83*/
2192         char __iomem *iop_device_map;
2193         /*firm_version,21,84-99*/
2194         int count;
2195         dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2196         if (!dma_coherent){
2197                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2198                 return false;
2199         }
2200         acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2201         reg = (struct MessageUnit_B *)dma_coherent;
2202         acb->pmuB = reg;
2203         reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2204         reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2205         reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2206         reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2207         reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2208         reg->message_rbuffer =  (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2209         reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2210         iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2211         iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2212         iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2213
2214         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2215         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2216                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2217                         miscellaneous data' timeout \n", acb->host->host_no);
2218                 return false;
2219         }
2220         count = 8;
2221         while (count){
2222                 *acb_firm_model = readb(iop_firm_model);
2223                 acb_firm_model++;
2224                 iop_firm_model++;
2225                 count--;
2226         }
2227         count = 16;
2228         while (count){
2229                 *acb_firm_version = readb(iop_firm_version);
2230                 acb_firm_version++;
2231                 iop_firm_version++;
2232                 count--;
2233         }
2234
2235         count = 16;
2236         while(count){
2237                 *acb_device_map = readb(iop_device_map);
2238                 acb_device_map++;
2239                 iop_device_map++;
2240                 count--;
2241         }
2242
2243         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2244                 acb->host->host_no,
2245                 acb->firm_version,
2246                 acb->firm_model);
2247
2248         acb->signature = readl(&reg->message_rwbuffer[1]);
2249         /*firm_signature,1,00-03*/
2250         acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2251         /*firm_request_len,1,04-07*/
2252         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2253         /*firm_numbers_queue,2,08-11*/
2254         acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2255         /*firm_sdram_size,3,12-15*/
2256         acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2257         /*firm_ide_channels,4,16-19*/
2258         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2259         /*firm_ide_channels,4,16-19*/
2260         return true;
2261 }
2262
2263 static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2264 {
2265         uint32_t intmask_org, Index, firmware_state = 0;
2266         struct MessageUnit_C *reg = pACB->pmuC;
2267         char *acb_firm_model = pACB->firm_model;
2268         char *acb_firm_version = pACB->firm_version;
2269         char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2270         char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2271         int count;
2272         /* disable all outbound interrupt */
2273         intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2274         writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2275         /* wait firmware ready */
2276         do {
2277                 firmware_state = readl(&reg->outbound_msgaddr1);
2278         } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2279         /* post "get config" instruction */
2280         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2281         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2282         /* wait message ready */
2283         for (Index = 0; Index < 2000; Index++) {
2284                 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2285                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2286                         break;
2287                 }
2288                 udelay(10);
2289         } /*max 1 seconds*/
2290         if (Index >= 2000) {
2291                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2292                         miscellaneous data' timeout \n", pACB->host->host_no);
2293                 return false;
2294         }
2295         count = 8;
2296         while (count) {
2297                 *acb_firm_model = readb(iop_firm_model);
2298                 acb_firm_model++;
2299                 iop_firm_model++;
2300                 count--;
2301         }
2302         count = 16;
2303         while (count) {
2304                 *acb_firm_version = readb(iop_firm_version);
2305                 acb_firm_version++;
2306                 iop_firm_version++;
2307                 count--;
2308         }
2309         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2310                 pACB->host->host_no,
2311                 pACB->firm_version,
2312                 pACB->firm_model);
2313         pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2314         pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2315         pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2316         pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2317         pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2318         /*all interrupt service will be enable at arcmsr_iop_init*/
2319         return true;
2320 }
2321 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2322 {
2323         if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2324                 return arcmsr_get_hba_config(acb);
2325         else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2326                 return arcmsr_get_hbb_config(acb);
2327         else
2328                 return arcmsr_get_hbc_config(acb);
2329 }
2330
2331 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2332         struct CommandControlBlock *poll_ccb)
2333 {
2334         struct MessageUnit_A __iomem *reg = acb->pmuA;
2335         struct CommandControlBlock *ccb;
2336         struct ARCMSR_CDB *arcmsr_cdb;
2337         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2338         int rtn;
2339         bool error;
2340         polling_hba_ccb_retry:
2341         poll_count++;
2342         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2343         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2344         while (1) {
2345                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2346                         if (poll_ccb_done){
2347                                 rtn = SUCCESS;
2348                                 break;
2349                         }else {
2350                                 msleep(25);
2351                                 if (poll_count > 100){
2352                                         rtn = FAILED;
2353                                         break;
2354                                 }
2355                                 goto polling_hba_ccb_retry;
2356                         }
2357                 }
2358                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2359                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2360                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2361                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2362                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2363                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2364                                         " poll command abort successfully \n"
2365                                         , acb->host->host_no
2366                                         , ccb->pcmd->device->id
2367                                         , ccb->pcmd->device->lun
2368                                         , ccb);
2369                                 ccb->pcmd->result = DID_ABORT << 16;
2370                                 arcmsr_ccb_complete(ccb);
2371                                 continue;
2372                         }
2373                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2374                                 " command done ccb = '0x%p'"
2375                                 "ccboutstandingcount = %d \n"
2376                                 , acb->host->host_no
2377                                 , ccb
2378                                 , atomic_read(&acb->ccboutstandingcount));
2379                         continue;
2380                 }
2381                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2382                 arcmsr_report_ccb_state(acb, ccb, error);
2383         }
2384         return rtn;
2385 }
2386
2387 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2388                                         struct CommandControlBlock *poll_ccb)
2389 {
2390         struct MessageUnit_B *reg = acb->pmuB;
2391         struct ARCMSR_CDB *arcmsr_cdb;
2392         struct CommandControlBlock *ccb;
2393         uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2394         int index, rtn;
2395         bool error;
2396         polling_hbb_ccb_retry:
2397         poll_count++;
2398         /* clear doorbell interrupt */
2399         writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2400         while(1){
2401                 index = reg->doneq_index;
2402                 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2403                         if (poll_ccb_done){
2404                                 rtn = SUCCESS;
2405                                 break;
2406                         }else {
2407                                 msleep(25);
2408                                 if (poll_count > 100){
2409                                         rtn = FAILED;
2410                                         break;
2411                                 }
2412                                 goto polling_hbb_ccb_retry;
2413                         }
2414                 }
2415                 writel(0, &reg->done_qbuffer[index]);
2416                 index++;
2417                 /*if last index number set it to 0 */
2418                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2419                 reg->doneq_index = index;
2420                 /* check if command done with no error*/
2421                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2422                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2423                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2424                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2425                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2426                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2427                                         " poll command abort successfully \n"
2428                                         ,acb->host->host_no
2429                                         ,ccb->pcmd->device->id
2430                                         ,ccb->pcmd->device->lun
2431                                         ,ccb);
2432                                 ccb->pcmd->result = DID_ABORT << 16;
2433                                 arcmsr_ccb_complete(ccb);
2434                                 continue;
2435                         }
2436                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2437                                 " command done ccb = '0x%p'"
2438                                 "ccboutstandingcount = %d \n"
2439                                 , acb->host->host_no
2440                                 , ccb
2441                                 , atomic_read(&acb->ccboutstandingcount));
2442                         continue;
2443                 }
2444                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2445                 arcmsr_report_ccb_state(acb, ccb, error);
2446         }
2447         return rtn;
2448 }
2449
2450 static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2451 {
2452         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2453         uint32_t flag_ccb, ccb_cdb_phy;
2454         struct ARCMSR_CDB *arcmsr_cdb;
2455         bool error;
2456         struct CommandControlBlock *pCCB;
2457         uint32_t poll_ccb_done = 0, poll_count = 0;
2458         int rtn;
2459 polling_hbc_ccb_retry:
2460         poll_count++;
2461         while (1) {
2462                 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2463                         if (poll_ccb_done) {
2464                                 rtn = SUCCESS;
2465                                 break;
2466                         } else {
2467                                 msleep(25);
2468                                 if (poll_count > 100) {
2469                                         rtn = FAILED;
2470                                         break;
2471                                 }
2472                                 goto polling_hbc_ccb_retry;
2473                         }
2474                 }
2475                 flag_ccb = readl(&reg->outbound_queueport_low);
2476                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2477                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2478                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2479                 poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2480                 /* check ifcommand done with no error*/
2481                 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2482                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2483                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2484                                         " poll command abort successfully \n"
2485                                         , acb->host->host_no
2486                                         , pCCB->pcmd->device->id
2487                                         , pCCB->pcmd->device->lun
2488                                         , pCCB);
2489                                         pCCB->pcmd->result = DID_ABORT << 16;
2490                                         arcmsr_ccb_complete(pCCB);
2491                                 continue;
2492                         }
2493                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2494                                 " command done ccb = '0x%p'"
2495                                 "ccboutstandingcount = %d \n"
2496                                 , acb->host->host_no
2497                                 , pCCB
2498                                 , atomic_read(&acb->ccboutstandingcount));
2499                         continue;
2500                 }
2501                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2502                 arcmsr_report_ccb_state(acb, pCCB, error);
2503         }
2504         return rtn;
2505 }
2506 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2507                                         struct CommandControlBlock *poll_ccb)
2508 {
2509         int rtn = 0;
2510         switch (acb->adapter_type) {
2511
2512         case ACB_ADAPTER_TYPE_A: {
2513                 rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2514                 }
2515                 break;
2516
2517         case ACB_ADAPTER_TYPE_B: {
2518                 rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2519                 }
2520                 break;
2521         case ACB_ADAPTER_TYPE_C: {
2522                 rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2523                 }
2524         }
2525         return rtn;
2526 }
2527
2528 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2529 {
2530         uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2531         dma_addr_t dma_coherent_handle;
2532         /*
2533         ********************************************************************
2534         ** here we need to tell iop 331 our freeccb.HighPart
2535         ** if freeccb.HighPart is not zero
2536         ********************************************************************
2537         */
2538         dma_coherent_handle = acb->dma_coherent_handle;
2539         cdb_phyaddr = (uint32_t)(dma_coherent_handle);
2540         cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
2541         acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2542         /*
2543         ***********************************************************************
2544         **    if adapter type B, set window of "post command Q"
2545         ***********************************************************************
2546         */
2547         switch (acb->adapter_type) {
2548
2549         case ACB_ADAPTER_TYPE_A: {
2550                 if (cdb_phyaddr_hi32 != 0) {
2551                         struct MessageUnit_A __iomem *reg = acb->pmuA;
2552                         uint32_t intmask_org;
2553                         intmask_org = arcmsr_disable_outbound_ints(acb);
2554                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2555                                                 &reg->message_rwbuffer[0]);
2556                         writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2557                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2558                                                         &reg->inbound_msgaddr0);
2559                         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2560                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2561                                 part physical address timeout\n",
2562                                 acb->host->host_no);
2563                                 return 1;
2564                         }
2565                         arcmsr_enable_outbound_ints(acb, intmask_org);
2566                 }
2567                 }
2568                 break;
2569
2570         case ACB_ADAPTER_TYPE_B: {
2571                 unsigned long post_queue_phyaddr;
2572                 uint32_t __iomem *rwbuffer;
2573
2574                 struct MessageUnit_B *reg = acb->pmuB;
2575                 uint32_t intmask_org;
2576                 intmask_org = arcmsr_disable_outbound_ints(acb);
2577                 reg->postq_index = 0;
2578                 reg->doneq_index = 0;
2579                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2580                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2581                         printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2582                                 acb->host->host_no);
2583                         return 1;
2584                 }
2585                 post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2586                 rwbuffer = reg->message_rwbuffer;
2587                 /* driver "set config" signature */
2588                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2589                 /* normal should be zero */
2590                 writel(cdb_phyaddr_hi32, rwbuffer++);
2591                 /* postQ size (256 + 8)*4        */
2592                 writel(post_queue_phyaddr, rwbuffer++);
2593                 /* doneQ size (256 + 8)*4        */
2594                 writel(post_queue_phyaddr + 1056, rwbuffer++);
2595                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
2596                 writel(1056, rwbuffer);
2597
2598                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2599                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2600                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2601                         timeout \n",acb->host->host_no);
2602                         return 1;
2603                 }
2604                 arcmsr_hbb_enable_driver_mode(acb);
2605                 arcmsr_enable_outbound_ints(acb, intmask_org);
2606                 }
2607                 break;
2608         case ACB_ADAPTER_TYPE_C: {
2609                 if (cdb_phyaddr_hi32 != 0) {
2610                         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2611
2612                         if (cdb_phyaddr_hi32 != 0) {
2613                                 unsigned char Retries = 0x00;
2614                                 do {
2615                                         printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x \n", acb->adapter_index, cdb_phyaddr_hi32);
2616                                 } while (Retries++ < 100);
2617                         }
2618                         writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2619                         writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2620                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2621                         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2622                         if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2623                                 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2624                                 timeout \n", acb->host->host_no);
2625                                 return 1;
2626                         }
2627                 }
2628                 }
2629         }
2630         return 0;
2631 }
2632
2633 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2634 {
2635         uint32_t firmware_state = 0;
2636         switch (acb->adapter_type) {
2637
2638         case ACB_ADAPTER_TYPE_A: {
2639                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2640                 do {
2641                         firmware_state = readl(&reg->outbound_msgaddr1);
2642                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2643                 }
2644                 break;
2645
2646         case ACB_ADAPTER_TYPE_B: {
2647                 struct MessageUnit_B *reg = acb->pmuB;
2648                 do {
2649                         firmware_state = readl(reg->iop2drv_doorbell);
2650                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2651                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2652                 }
2653                 break;
2654         case ACB_ADAPTER_TYPE_C: {
2655                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2656                 do {
2657                         firmware_state = readl(&reg->outbound_msgaddr1);
2658                 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2659                 }
2660         }
2661 }
2662
2663 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2664 {
2665         struct MessageUnit_A __iomem *reg = acb->pmuA;
2666         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2667                 return;
2668         } else {
2669                 acb->fw_flag = FW_NORMAL;
2670                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2671                         atomic_set(&acb->rq_map_token, 16);
2672                 }
2673                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2674                 if (atomic_dec_and_test(&acb->rq_map_token))
2675                         return;
2676                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2677                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2678         }
2679         return;
2680 }
2681
2682 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2683 {
2684         struct MessageUnit_B __iomem *reg = acb->pmuB;
2685         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2686                 return;
2687         } else {
2688                 acb->fw_flag = FW_NORMAL;
2689                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2690                         atomic_set(&acb->rq_map_token,16);
2691                 }
2692                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2693                 if(atomic_dec_and_test(&acb->rq_map_token))
2694                         return;
2695                 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2696                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2697         }
2698         return;
2699 }
2700
2701 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2702 {
2703         struct MessageUnit_C __iomem *reg = acb->pmuC;
2704         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
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                         return;
2714                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2715                 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2716                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2717         }
2718         return;
2719 }
2720
2721 static void arcmsr_request_device_map(unsigned long pacb)
2722 {
2723         struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2724         switch (acb->adapter_type) {
2725                 case ACB_ADAPTER_TYPE_A: {
2726                         arcmsr_request_hba_device_map(acb);
2727                 }
2728                 break;
2729                 case ACB_ADAPTER_TYPE_B: {
2730                         arcmsr_request_hbb_device_map(acb);
2731                 }
2732                 break;
2733                 case ACB_ADAPTER_TYPE_C: {
2734                         arcmsr_request_hbc_device_map(acb);
2735                 }
2736         }
2737 }
2738
2739 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2740 {
2741         struct MessageUnit_A __iomem *reg = acb->pmuA;
2742         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2743         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2744         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2745                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2746                                 rebulid' timeout \n", acb->host->host_no);
2747         }
2748 }
2749
2750 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2751 {
2752         struct MessageUnit_B *reg = acb->pmuB;
2753         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2754         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2755         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2756                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2757                                 rebulid' timeout \n",acb->host->host_no);
2758         }
2759 }
2760
2761 static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2762 {
2763         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2764         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2765         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2766         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2767         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2768                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2769                                 rebulid' timeout \n", pACB->host->host_no);
2770         }
2771         return;
2772 }
2773 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2774 {
2775         switch (acb->adapter_type) {
2776         case ACB_ADAPTER_TYPE_A:
2777                 arcmsr_start_hba_bgrb(acb);
2778                 break;
2779         case ACB_ADAPTER_TYPE_B:
2780                 arcmsr_start_hbb_bgrb(acb);
2781                 break;
2782         case ACB_ADAPTER_TYPE_C:
2783                 arcmsr_start_hbc_bgrb(acb);
2784         }
2785 }
2786
2787 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2788 {
2789         switch (acb->adapter_type) {
2790         case ACB_ADAPTER_TYPE_A: {
2791                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2792                 uint32_t outbound_doorbell;
2793                 /* empty doorbell Qbuffer if door bell ringed */
2794                 outbound_doorbell = readl(&reg->outbound_doorbell);
2795                 /*clear doorbell interrupt */
2796                 writel(outbound_doorbell, &reg->outbound_doorbell);
2797                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2798                 }
2799                 break;
2800
2801         case ACB_ADAPTER_TYPE_B: {
2802                 struct MessageUnit_B *reg = acb->pmuB;
2803                 /*clear interrupt and message state*/
2804                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2805                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2806                 /* let IOP know data has been read */
2807                 }
2808                 break;
2809         case ACB_ADAPTER_TYPE_C: {
2810                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2811                 uint32_t outbound_doorbell;
2812                 /* empty doorbell Qbuffer if door bell ringed */
2813                 outbound_doorbell = readl(&reg->outbound_doorbell);
2814                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2815                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2816                 }
2817         }
2818 }
2819
2820 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2821 {
2822         switch (acb->adapter_type) {
2823         case ACB_ADAPTER_TYPE_A:
2824                 return;
2825         case ACB_ADAPTER_TYPE_B:
2826                 {
2827                         struct MessageUnit_B *reg = acb->pmuB;
2828                         writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2829                         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2830                                 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2831                                 return;
2832                         }
2833                 }
2834                 break;
2835         case ACB_ADAPTER_TYPE_C:
2836                 return;
2837         }
2838         return;
2839 }
2840
2841 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2842 {
2843         uint8_t value[64];
2844         int i, count = 0;
2845         struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2846         struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2847         u32 temp = 0;
2848         /* backup pci config data */
2849         printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2850         for (i = 0; i < 64; i++) {
2851                 pci_read_config_byte(acb->pdev, i, &value[i]);
2852         }
2853         /* hardware reset signal */
2854         if ((acb->dev_id == 0x1680)) {
2855                 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2856         } else if ((acb->dev_id == 0x1880)) {
2857                 do {
2858                         count++;
2859                         writel(0xF, &pmuC->write_sequence);
2860                         writel(0x4, &pmuC->write_sequence);
2861                         writel(0xB, &pmuC->write_sequence);
2862                         writel(0x2, &pmuC->write_sequence);
2863                         writel(0x7, &pmuC->write_sequence);
2864                         writel(0xD, &pmuC->write_sequence);
2865                 } while ((((temp = readl(&pmuC->host_diagnostic)) | ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2866                 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2867         } else {
2868                 pci_write_config_byte(acb->pdev, 0x84, 0x20);
2869         }
2870         msleep(2000);
2871         /* write back pci config data */
2872         for (i = 0; i < 64; i++) {
2873                 pci_write_config_byte(acb->pdev, i, value[i]);
2874         }
2875         msleep(1000);
2876         return;
2877 }
2878 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2879 {
2880         uint32_t intmask_org;
2881         /* disable all outbound interrupt */
2882         intmask_org = arcmsr_disable_outbound_ints(acb);
2883         arcmsr_wait_firmware_ready(acb);
2884         arcmsr_iop_confirm(acb);
2885         /*start background rebuild*/
2886         arcmsr_start_adapter_bgrb(acb);
2887         /* empty doorbell Qbuffer if door bell ringed */
2888         arcmsr_clear_doorbell_queue_buffer(acb);
2889         arcmsr_enable_eoi_mode(acb);
2890         /* enable outbound Post Queue,outbound doorbell Interrupt */
2891         arcmsr_enable_outbound_ints(acb, intmask_org);
2892         acb->acb_flags |= ACB_F_IOP_INITED;
2893 }
2894
2895 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2896 {
2897         struct CommandControlBlock *ccb;
2898         uint32_t intmask_org;
2899         uint8_t rtnval = 0x00;
2900         int i = 0;
2901         if (atomic_read(&acb->ccboutstandingcount) != 0) {
2902                 /* disable all outbound interrupt */
2903                 intmask_org = arcmsr_disable_outbound_ints(acb);
2904                 /* talk to iop 331 outstanding command aborted */
2905                 rtnval = arcmsr_abort_allcmd(acb);
2906                 /* clear all outbound posted Q */
2907                 arcmsr_done4abort_postqueue(acb);
2908                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2909                         ccb = acb->pccb_pool[i];
2910                         if (ccb->startdone == ARCMSR_CCB_START) {
2911                                 arcmsr_ccb_complete(ccb);
2912                         }
2913                 }
2914                 atomic_set(&acb->ccboutstandingcount, 0);
2915                 /* enable all outbound interrupt */
2916                 arcmsr_enable_outbound_ints(acb, intmask_org);
2917                 return rtnval;
2918         }
2919         return rtnval;
2920 }
2921
2922 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2923 {
2924         struct AdapterControlBlock *acb =
2925                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2926         uint32_t intmask_org, outbound_doorbell;
2927         int retry_count = 0;
2928         int rtn = FAILED;
2929         acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2930         printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2931         acb->num_resets++;
2932
2933         switch(acb->adapter_type){
2934                 case ACB_ADAPTER_TYPE_A:{
2935                         if (acb->acb_flags & ACB_F_BUS_RESET){
2936                                 long timeout;
2937                                 printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
2938                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2939                                 if (timeout) {
2940                                         return SUCCESS;
2941                                 }
2942                         }
2943                         acb->acb_flags |= ACB_F_BUS_RESET;
2944                         if (!arcmsr_iop_reset(acb)) {
2945                                 struct MessageUnit_A __iomem *reg;
2946                                 reg = acb->pmuA;
2947                                 arcmsr_hardware_reset(acb);
2948                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
2949 sleep_again:
2950                                 arcmsr_sleep_for_bus_reset(cmd);
2951                                 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2952                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
2953                                         if (retry_count > retrycount) {
2954                                                 acb->fw_flag = FW_DEADLOCK;
2955                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
2956                                                 return FAILED;
2957                                         }
2958                                         retry_count++;
2959                                         goto sleep_again;
2960                                 }
2961                                 acb->acb_flags |= ACB_F_IOP_INITED;
2962                                 /* disable all outbound interrupt */
2963                                 intmask_org = arcmsr_disable_outbound_ints(acb);
2964                                 arcmsr_get_firmware_spec(acb);
2965                                 arcmsr_start_adapter_bgrb(acb);
2966                                 /* clear Qbuffer if door bell ringed */
2967                                 outbound_doorbell = readl(&reg->outbound_doorbell);
2968                                 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2969                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2970                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
2971                                 arcmsr_enable_outbound_ints(acb, intmask_org);
2972                                 atomic_set(&acb->rq_map_token, 16);
2973                                 atomic_set(&acb->ante_token_value, 16);
2974                                 acb->fw_flag = FW_NORMAL;
2975                                 init_timer(&acb->eternal_timer);
2976                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
2977                                 acb->eternal_timer.data = (unsigned long) acb;
2978                                 acb->eternal_timer.function = &arcmsr_request_device_map;
2979                                 add_timer(&acb->eternal_timer);
2980                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2981                                 rtn = SUCCESS;
2982                                 printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
2983                         } else {
2984                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2985                                 if (atomic_read(&acb->rq_map_token) == 0) {
2986                                         atomic_set(&acb->rq_map_token, 16);
2987                                         atomic_set(&acb->ante_token_value, 16);
2988                                         acb->fw_flag = FW_NORMAL;
2989                                         init_timer(&acb->eternal_timer);
2990                                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
2991                                         acb->eternal_timer.data = (unsigned long) acb;
2992                                         acb->eternal_timer.function = &arcmsr_request_device_map;
2993                                         add_timer(&acb->eternal_timer);
2994                                 } else {
2995                                         atomic_set(&acb->rq_map_token, 16);
2996                                         atomic_set(&acb->ante_token_value, 16);
2997                                         acb->fw_flag = FW_NORMAL;
2998                                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2999                                 }
3000                                 rtn = SUCCESS;
3001                         }
3002                         break;
3003                 }
3004                 case ACB_ADAPTER_TYPE_B:{
3005                         acb->acb_flags |= ACB_F_BUS_RESET;
3006                         if (!arcmsr_iop_reset(acb)) {
3007                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3008                                 rtn = FAILED;
3009                         } else {
3010                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3011                                 if (atomic_read(&acb->rq_map_token) == 0) {
3012                                         atomic_set(&acb->rq_map_token, 16);
3013                                         atomic_set(&acb->ante_token_value, 16);
3014                                         acb->fw_flag = FW_NORMAL;
3015                                         init_timer(&acb->eternal_timer);
3016                                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
3017                                         acb->eternal_timer.data = (unsigned long) acb;
3018                                         acb->eternal_timer.function = &arcmsr_request_device_map;
3019                                         add_timer(&acb->eternal_timer);
3020                                 } else {
3021                                         atomic_set(&acb->rq_map_token, 16);
3022                                         atomic_set(&acb->ante_token_value, 16);
3023                                         acb->fw_flag = FW_NORMAL;
3024                                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3025                                 }
3026                                 rtn = SUCCESS;
3027                         }
3028                         break;
3029                 }
3030                 case ACB_ADAPTER_TYPE_C:{
3031                         if (acb->acb_flags & ACB_F_BUS_RESET) {
3032                                 long timeout;
3033                                 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
3034                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3035                                 if (timeout) {
3036                                         return SUCCESS;
3037                                 }
3038                         }
3039                         acb->acb_flags |= ACB_F_BUS_RESET;
3040                         if (!arcmsr_iop_reset(acb)) {
3041                                 struct MessageUnit_C __iomem *reg;
3042                                 reg = acb->pmuC;
3043                                 arcmsr_hardware_reset(acb);
3044                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3045 sleep:
3046                                 arcmsr_sleep_for_bus_reset(cmd);
3047                                 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3048                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
3049                                         if (retry_count > retrycount) {
3050                                                 acb->fw_flag = FW_DEADLOCK;
3051                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
3052                                                 return FAILED;
3053                                         }
3054                                         retry_count++;
3055                                         goto sleep;
3056                                 }
3057                                 acb->acb_flags |= ACB_F_IOP_INITED;
3058                                 /* disable all outbound interrupt */
3059                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3060                                 arcmsr_get_firmware_spec(acb);
3061                                 arcmsr_start_adapter_bgrb(acb);
3062                                 /* clear Qbuffer if door bell ringed */
3063                                 outbound_doorbell = readl(&reg->outbound_doorbell);
3064                                 writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3065                                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3066                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3067                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3068                                 atomic_set(&acb->rq_map_token, 16);
3069                                 atomic_set(&acb->ante_token_value, 16);
3070                                 acb->fw_flag = FW_NORMAL;
3071                                 init_timer(&acb->eternal_timer);
3072                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
3073                                 acb->eternal_timer.data = (unsigned long) acb;
3074                                 acb->eternal_timer.function = &arcmsr_request_device_map;
3075                                 add_timer(&acb->eternal_timer);
3076                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3077                                 rtn = SUCCESS;
3078                                 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3079                         } else {
3080                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3081                                 if (atomic_read(&acb->rq_map_token) == 0) {
3082                                         atomic_set(&acb->rq_map_token, 16);
3083                                         atomic_set(&acb->ante_token_value, 16);
3084                                         acb->fw_flag = FW_NORMAL;
3085                                         init_timer(&acb->eternal_timer);
3086                                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
3087                                         acb->eternal_timer.data = (unsigned long) acb;
3088                                         acb->eternal_timer.function = &arcmsr_request_device_map;
3089                                         add_timer(&acb->eternal_timer);
3090                                 } else {
3091                                         atomic_set(&acb->rq_map_token, 16);
3092                                         atomic_set(&acb->ante_token_value, 16);
3093                                         acb->fw_flag = FW_NORMAL;
3094                                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3095                                 }
3096                                 rtn = SUCCESS;
3097                         }
3098                         break;
3099                 }
3100         }
3101         return rtn;
3102 }
3103
3104 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3105                 struct CommandControlBlock *ccb)
3106 {
3107         int rtn;
3108         rtn = arcmsr_polling_ccbdone(acb, ccb);
3109         return rtn;
3110 }
3111
3112 static int arcmsr_abort(struct scsi_cmnd *cmd)
3113 {
3114         struct AdapterControlBlock *acb =
3115                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3116         int i = 0;
3117         int rtn = FAILED;
3118         printk(KERN_NOTICE
3119                 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3120                 acb->host->host_no, cmd->device->id, cmd->device->lun);
3121         acb->acb_flags |= ACB_F_ABORT;
3122         acb->num_aborts++;
3123         /*
3124         ************************************************
3125         ** the all interrupt service routine is locked
3126         ** we need to handle it as soon as possible and exit
3127         ************************************************
3128         */
3129         if (!atomic_read(&acb->ccboutstandingcount))
3130                 return rtn;
3131
3132         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3133                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3134                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3135                         ccb->startdone = ARCMSR_CCB_ABORTED;
3136                         rtn = arcmsr_abort_one_cmd(acb, ccb);
3137                         break;
3138                 }
3139         }
3140         acb->acb_flags &= ~ACB_F_ABORT;
3141         return rtn;
3142 }
3143
3144 static const char *arcmsr_info(struct Scsi_Host *host)
3145 {
3146         struct AdapterControlBlock *acb =
3147                 (struct AdapterControlBlock *) host->hostdata;
3148         static char buf[256];
3149         char *type;
3150         int raid6 = 1;
3151         switch (acb->pdev->device) {
3152         case PCI_DEVICE_ID_ARECA_1110:
3153         case PCI_DEVICE_ID_ARECA_1200:
3154         case PCI_DEVICE_ID_ARECA_1202:
3155         case PCI_DEVICE_ID_ARECA_1210:
3156                 raid6 = 0;
3157                 /*FALLTHRU*/
3158         case PCI_DEVICE_ID_ARECA_1120:
3159         case PCI_DEVICE_ID_ARECA_1130:
3160         case PCI_DEVICE_ID_ARECA_1160:
3161         case PCI_DEVICE_ID_ARECA_1170:
3162         case PCI_DEVICE_ID_ARECA_1201:
3163         case PCI_DEVICE_ID_ARECA_1220:
3164         case PCI_DEVICE_ID_ARECA_1230:
3165         case PCI_DEVICE_ID_ARECA_1260:
3166         case PCI_DEVICE_ID_ARECA_1270:
3167         case PCI_DEVICE_ID_ARECA_1280:
3168                 type = "SATA";
3169                 break;
3170         case PCI_DEVICE_ID_ARECA_1380:
3171         case PCI_DEVICE_ID_ARECA_1381:
3172         case PCI_DEVICE_ID_ARECA_1680:
3173         case PCI_DEVICE_ID_ARECA_1681:
3174         case PCI_DEVICE_ID_ARECA_1880:
3175                 type = "SAS";
3176                 break;
3177         default:
3178                 type = "X-TYPE";
3179                 break;
3180         }
3181         sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3182                         type, raid6 ? "( RAID6 capable)" : "",
3183                         ARCMSR_DRIVER_VERSION);
3184         return buf;
3185 }