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_cmnd *cmd,
  89                                         void (*done) (struct scsi_cmnd *));
  90 static int arcmsr_probe(struct pci_dev *pdev,
  91                                 const struct pci_device_id *id);
  92 static void arcmsr_remove(struct pci_dev *pdev);
  93 static void arcmsr_shutdown(struct pci_dev *pdev);
  94 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  95 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  96 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
  97 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
  98 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
  99 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
 100 static void arcmsr_request_device_map(unsigned long pacb);
 101 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
 102 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
 103 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
 104 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
 105 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
 106 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
 107 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
 108 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
 109 static const char *arcmsr_info(struct Scsi_Host *);
 110 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 111 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
 112                                           int queue_depth, int reason)
 113 {
 114         if (reason != SCSI_QDEPTH_DEFAULT)
 115                 return -EOPNOTSUPP;
 116
 117         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 118                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 119         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 120         return queue_depth;
 121 }
 122
 123 static struct scsi_host_template arcmsr_scsi_host_template = {
 124         .module                 = THIS_MODULE,
 125         .name                   = "ARCMSR ARECA SATA/SAS RAID Controller"
 126                                 ARCMSR_DRIVER_VERSION,
 127         .info                   = arcmsr_info,
 128         .queuecommand           = arcmsr_queue_command,
 129         .eh_abort_handler               = arcmsr_abort,
 130         .eh_bus_reset_handler   = arcmsr_bus_reset,
 131         .bios_param             = arcmsr_bios_param,
 132         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 133         .can_queue              = ARCMSR_MAX_FREECCB_NUM,
 134         .this_id                        = ARCMSR_SCSI_INITIATOR_ID,
 135         .sg_tablesize                   = ARCMSR_DEFAULT_SG_ENTRIES,
 136         .max_sectors                    = ARCMSR_MAX_XFER_SECTORS_C,
 137         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 138         .use_clustering         = ENABLE_CLUSTERING,
 139         .shost_attrs            = arcmsr_host_attrs,
 140 };
 141 static struct pci_device_id arcmsr_device_id_table[] = {
 142         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 143         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 144         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 145         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 146         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
 147         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
 148         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
 149         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
 150         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 151         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 152         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
 153         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
 154         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
 155         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
 156         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
 157         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
 158         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
 159         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
 160         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)},
 161         {0, 0}, /* Terminating entry */
 162 };
 163 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 164 static struct pci_driver arcmsr_pci_driver = {
 165         .name                   = "arcmsr",
 166         .id_table                       = arcmsr_device_id_table,
 167         .probe                  = arcmsr_probe,
 168         .remove                 = arcmsr_remove,
 169         .shutdown               = arcmsr_shutdown,
 170 };
 171 /*
 172 ****************************************************************************
 173 ****************************************************************************
 174 */
 175 int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd)
 176 {
 177                 struct Scsi_Host *shost = NULL;
 178                 int i, isleep;
 179                 shost = cmd->device->host;
 180                 isleep = sleeptime / 10;
 181                 if (isleep > 0) {
 182                         for (i = 0; i < isleep; i++) {
 183                                 msleep(10000);
 184                         }
 185                 }
 186
 187                 isleep = sleeptime % 10;
 188                 if (isleep > 0) {
 189                         msleep(isleep*1000);
 190                 }
 191                 printk(KERN_NOTICE "wake-up\n");
 192                 return 0;
 193 }
 194
 195 static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
 196 {
 197         switch (acb->adapter_type) {
 198         case ACB_ADAPTER_TYPE_A:
 199         case ACB_ADAPTER_TYPE_C:
 200                 break;
 201         case ACB_ADAPTER_TYPE_B:{
 202                 dma_free_coherent(&acb->pdev->dev,
 203                         sizeof(struct MessageUnit_B),
 204                         acb->pmuB, acb->dma_coherent_handle_hbb_mu);
 205         }
 206         }
 207 }
 208
 209 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 210 {
 211         struct pci_dev *pdev = acb->pdev;
 212         switch (acb->adapter_type){
 213         case ACB_ADAPTER_TYPE_A:{
 214                 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 215                 if (!acb->pmuA) {
 216                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 217                         return false;
 218                 }
 219                 break;
 220         }
 221         case ACB_ADAPTER_TYPE_B:{
 222                 void __iomem *mem_base0, *mem_base1;
 223                 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 224                 if (!mem_base0) {
 225                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 226                         return false;
 227                 }
 228                 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 229                 if (!mem_base1) {
 230                         iounmap(mem_base0);
 231                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 232                         return false;
 233                 }
 234                 acb->mem_base0 = mem_base0;
 235                 acb->mem_base1 = mem_base1;
 236                 break;
 237         }
 238         case ACB_ADAPTER_TYPE_C:{
 239                 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 240                 if (!acb->pmuC) {
 241                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 242                         return false;
 243                 }
 244                 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 245                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 246                         return true;
 247                 }
 248                 break;
 249         }
 250         }
 251         return true;
 252 }
 253
 254 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 255 {
 256         switch (acb->adapter_type) {
 257         case ACB_ADAPTER_TYPE_A:{
 258                 iounmap(acb->pmuA);
 259         }
 260         break;
 261         case ACB_ADAPTER_TYPE_B:{
 262                 iounmap(acb->mem_base0);
 263                 iounmap(acb->mem_base1);
 264         }
 265
 266         break;
 267         case ACB_ADAPTER_TYPE_C:{
 268                 iounmap(acb->pmuC);
 269         }
 270         }
 271 }
 272
 273 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 274 {
 275         irqreturn_t handle_state;
 276         struct AdapterControlBlock *acb = dev_id;
 277
 278         handle_state = arcmsr_interrupt(acb);
 279         return handle_state;
 280 }
 281
 282 static int arcmsr_bios_param(struct scsi_device *sdev,
 283                 struct block_device *bdev, sector_t capacity, int *geom)
 284 {
 285         int ret, heads, sectors, cylinders, total_capacity;
 286         unsigned char *buffer;/* return copy of block device's partition table */
 287
 288         buffer = scsi_bios_ptable(bdev);
 289         if (buffer) {
 290                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 291                 kfree(buffer);
 292                 if (ret != -1)
 293                         return ret;
 294         }
 295         total_capacity = capacity;
 296         heads = 64;
 297         sectors = 32;
 298         cylinders = total_capacity / (heads * sectors);
 299         if (cylinders > 1024) {
 300                 heads = 255;
 301                 sectors = 63;
 302                 cylinders = total_capacity / (heads * sectors);
 303         }
 304         geom[0] = heads;
 305         geom[1] = sectors;
 306         geom[2] = cylinders;
 307         return 0;
 308 }
 309
 310 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 311 {
 312         struct pci_dev *pdev = acb->pdev;
 313         u16 dev_id;
 314         pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 315         acb->dev_id = dev_id;
 316         switch (dev_id) {
 317         case 0x1880: {
 318                 acb->adapter_type = ACB_ADAPTER_TYPE_C;
 319                 }
 320                 break;
 321         case 0x1201: {
 322                 acb->adapter_type = ACB_ADAPTER_TYPE_B;
 323                 }
 324                 break;
 325
 326         default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
 327         }
 328 }
 329
 330 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 331 {
 332         struct MessageUnit_A __iomem *reg = acb->pmuA;
 333         uint32_t Index;
 334         uint8_t Retries = 0x00;
 335         do {
 336                 for (Index = 0; Index < 100; Index++) {
 337                         if (readl(&reg->outbound_intstatus) &
 338                                         ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 339                                 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 340                                         &reg->outbound_intstatus);
 341                                 return true;
 342                         }
 343                         msleep(10);
 344                 }/*max 1 seconds*/
 345
 346         } while (Retries++ < 20);/*max 20 sec*/
 347         return false;
 348 }
 349
 350 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
 351 {
 352         struct MessageUnit_B *reg = acb->pmuB;
 353         uint32_t Index;
 354         uint8_t Retries = 0x00;
 355         do {
 356                 for (Index = 0; Index < 100; Index++) {
 357                         if (readl(reg->iop2drv_doorbell)
 358                                 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 359                                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
 360                                         , reg->iop2drv_doorbell);
 361                                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
 362                                 return true;
 363                         }
 364                         msleep(10);
 365                 }/*max 1 seconds*/
 366
 367         } while (Retries++ < 20);/*max 20 sec*/
 368         return false;
 369 }
 370
 371 static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
 372 {
 373         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
 374         unsigned char Retries = 0x00;
 375         uint32_t Index;
 376         do {
 377                 for (Index = 0; Index < 100; Index++) {
 378                         if (readl(&phbcmu->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 379                                 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &phbcmu->outbound_doorbell_clear);/*clear interrupt*/
 380                                 return true;
 381                         }
 382                         /* one us delay */
 383                         msleep(10);
 384                 } /*max 1 seconds*/
 385         } while (Retries++ < 20); /*max 20 sec*/
 386         return false;
 387 }
 388 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 389 {
 390         struct MessageUnit_A __iomem *reg = acb->pmuA;
 391         int retry_count = 30;
 392         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 393         do {
 394                 if (arcmsr_hba_wait_msgint_ready(acb))
 395                         break;
 396                 else {
 397                         retry_count--;
 398                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 399                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 400                 }
 401         } while (retry_count != 0);
 402 }
 403
 404 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
 405 {
 406         struct MessageUnit_B *reg = acb->pmuB;
 407         int retry_count = 30;
 408         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 409         do {
 410                 if (arcmsr_hbb_wait_msgint_ready(acb))
 411                         break;
 412                 else {
 413                         retry_count--;
 414                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 415                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 416                 }
 417         } while (retry_count != 0);
 418 }
 419
 420 static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
 421 {
 422         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 423         int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 424         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 425         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 426         do {
 427                 if (arcmsr_hbc_wait_msgint_ready(pACB)) {
 428                         break;
 429                 } else {
 430                         retry_count--;
 431                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 432                         timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 433                 }
 434         } while (retry_count != 0);
 435         return;
 436 }
 437 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 438 {
 439         switch (acb->adapter_type) {
 440
 441         case ACB_ADAPTER_TYPE_A: {
 442                 arcmsr_flush_hba_cache(acb);
 443                 }
 444                 break;
 445
 446         case ACB_ADAPTER_TYPE_B: {
 447                 arcmsr_flush_hbb_cache(acb);
 448                 }
 449                 break;
 450         case ACB_ADAPTER_TYPE_C: {
 451                 arcmsr_flush_hbc_cache(acb);
 452                 }
 453         }
 454 }
 455
 456 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 457 {
 458         struct pci_dev *pdev = acb->pdev;
 459         void *dma_coherent;
 460         dma_addr_t dma_coherent_handle;
 461         struct CommandControlBlock *ccb_tmp;
 462         int i = 0, j = 0;
 463         dma_addr_t cdb_phyaddr;
 464         unsigned long roundup_ccbsize = 0, offset;
 465         unsigned long max_xfer_len;
 466         unsigned long max_sg_entrys;
 467         uint32_t  firm_config_version;
 468         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 469                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 470                         acb->devstate[i][j] = ARECA_RAID_GONE;
 471
 472         max_xfer_len = ARCMSR_MAX_XFER_LEN;
 473         max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 474         firm_config_version = acb->firm_cfg_version;
 475         if((firm_config_version & 0xFF) >= 3){
 476                 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 477                 max_sg_entrys = (max_xfer_len/4096);
 478         }
 479         acb->host->max_sectors = max_xfer_len/512;
 480         acb->host->sg_tablesize = max_sg_entrys;
 481         roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 482         acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM + 32;
 483         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 484         if(!dma_coherent){
 485                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no);
 486                 return -ENOMEM;
 487         }
 488         acb->dma_coherent = dma_coherent;
 489         acb->dma_coherent_handle = dma_coherent_handle;
 490         memset(dma_coherent, 0, acb->uncache_size);
 491         offset = roundup((unsigned long)dma_coherent, 32) - (unsigned long)dma_coherent;
 492         dma_coherent_handle = dma_coherent_handle + offset;
 493         dma_coherent = (struct CommandControlBlock *)dma_coherent + offset;
 494         ccb_tmp = dma_coherent;
 495         acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 496         for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 497                 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 498                 ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
 499                 acb->pccb_pool[i] = ccb_tmp;
 500                 ccb_tmp->acb = acb;
 501                 INIT_LIST_HEAD(&ccb_tmp->list);
 502                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 503                 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 504                 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 505         }
 506         return 0;
 507 }
 508
 509 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
 510 {
 511         struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 512         switch (acb->adapter_type) {
 513                 case ACB_ADAPTER_TYPE_A: {
 514
 515                         struct MessageUnit_A __iomem *reg  = acb->pmuA;
 516                         char *acb_dev_map = (char *)acb->device_map;
 517                         uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
 518                         char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
 519                         int target, lun;
 520                         struct scsi_device *psdev;
 521                         char diff;
 522
 523                         atomic_inc(&acb->rq_map_token);
 524                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 525                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 526                                         diff = (*acb_dev_map)^readb(devicemap);
 527                                         if (diff != 0) {
 528                                                 char temp;
 529                                                 *acb_dev_map = readb(devicemap);
 530                                                 temp =*acb_dev_map;
 531                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 532                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 533                                                                 scsi_add_device(acb->host, 0, target, lun);
 534                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 535                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 536                                                                 if (psdev != NULL ) {
 537                                                                         scsi_remove_device(psdev);
 538                                                                         scsi_device_put(psdev);
 539                                                                 }
 540                                                         }
 541                                                         temp >>= 1;
 542                                                         diff >>= 1;
 543                                                 }
 544                                         }
 545                                         devicemap++;
 546                                         acb_dev_map++;
 547                                 }
 548                         }
 549                         break;
 550                 }
 551
 552                 case ACB_ADAPTER_TYPE_B: {
 553                         struct MessageUnit_B *reg  = acb->pmuB;
 554                         char *acb_dev_map = (char *)acb->device_map;
 555                         uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
 556                         char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
 557                         int target, lun;
 558                         struct scsi_device *psdev;
 559                         char diff;
 560
 561                         atomic_inc(&acb->rq_map_token);
 562                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 563                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 564                                         diff = (*acb_dev_map)^readb(devicemap);
 565                                         if (diff != 0) {
 566                                                 char temp;
 567                                                 *acb_dev_map = readb(devicemap);
 568                                                 temp =*acb_dev_map;
 569                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 570                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 571                                                                 scsi_add_device(acb->host, 0, target, lun);
 572                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 573                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 574                                                                 if (psdev != NULL ) {
 575                                                                         scsi_remove_device(psdev);
 576                                                                         scsi_device_put(psdev);
 577                                                                 }
 578                                                         }
 579                                                         temp >>= 1;
 580                                                         diff >>= 1;
 581                                                 }
 582                                         }
 583                                         devicemap++;
 584                                         acb_dev_map++;
 585                                 }
 586                         }
 587                 }
 588                 break;
 589                 case ACB_ADAPTER_TYPE_C: {
 590                         struct MessageUnit_C *reg  = acb->pmuC;
 591                         char *acb_dev_map = (char *)acb->device_map;
 592                         uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 593                         char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 594                         int target, lun;
 595                         struct scsi_device *psdev;
 596                         char diff;
 597
 598                         atomic_inc(&acb->rq_map_token);
 599                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 600                                 for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
 601                                         diff = (*acb_dev_map)^readb(devicemap);
 602                                         if (diff != 0) {
 603                                                 char temp;
 604                                                 *acb_dev_map = readb(devicemap);
 605                                                 temp = *acb_dev_map;
 606                                                 for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 607                                                         if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
 608                                                                 scsi_add_device(acb->host, 0, target, lun);
 609                                                         } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 610                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 611                                                                 if (psdev != NULL) {
 612                                                                         scsi_remove_device(psdev);
 613                                                                         scsi_device_put(psdev);
 614                                                                 }
 615                                                         }
 616                                                         temp >>= 1;
 617                                                         diff >>= 1;
 618                                                 }
 619                                         }
 620                                         devicemap++;
 621                                         acb_dev_map++;
 622                                 }
 623                         }
 624                 }
 625         }
 626 }
 627
 628 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 629 {
 630         struct Scsi_Host *host;
 631         struct AdapterControlBlock *acb;
 632         uint8_t bus,dev_fun;
 633         int error;
 634         error = pci_enable_device(pdev);
 635         if(error){
 636                 return -ENODEV;
 637         }
 638         host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 639         if(!host){
 640                 goto pci_disable_dev;
 641         }
 642         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 643         if(error){
 644                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 645                 if(error){
 646                         printk(KERN_WARNING
 647                                "scsi%d: No suitable DMA mask available\n",
 648                                host->host_no);
 649                         goto scsi_host_release;
 650                 }
 651         }
 652         init_waitqueue_head(&wait_q);
 653         bus = pdev->bus->number;
 654         dev_fun = pdev->devfn;
 655         acb = (struct AdapterControlBlock *) host->hostdata;
 656         memset(acb,0,sizeof(struct AdapterControlBlock));
 657         acb->pdev = pdev;
 658         acb->host = host;
 659         host->max_lun = ARCMSR_MAX_TARGETLUN;
 660         host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 661         host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 662         host->can_queue = ARCMSR_MAX_FREECCB_NUM;       /* max simultaneous cmds */
 663         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 664         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 665         host->unique_id = (bus << 8) | dev_fun;
 666         pci_set_drvdata(pdev, host);
 667         pci_set_master(pdev);
 668         error = pci_request_regions(pdev, "arcmsr");
 669         if(error){
 670                 goto scsi_host_release;
 671         }
 672         spin_lock_init(&acb->eh_lock);
 673         spin_lock_init(&acb->ccblist_lock);
 674         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 675                         ACB_F_MESSAGE_RQBUFFER_CLEARED |
 676                         ACB_F_MESSAGE_WQBUFFER_READED);
 677         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 678         INIT_LIST_HEAD(&acb->ccb_free_list);
 679         arcmsr_define_adapter_type(acb);
 680         error = arcmsr_remap_pciregion(acb);
 681         if(!error){
 682                 goto pci_release_regs;
 683         }
 684         error = arcmsr_get_firmware_spec(acb);
 685         if(!error){
 686                 goto unmap_pci_region;
 687         }
 688         error = arcmsr_alloc_ccb_pool(acb);
 689         if(error){
 690                 goto free_hbb_mu;
 691         }
 692         arcmsr_iop_init(acb);
 693         error = scsi_add_host(host, &pdev->dev);
 694         if(error){
 695                 goto RAID_controller_stop;
 696         }
 697         error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
 698         if(error){
 699                 goto scsi_host_remove;
 700         }
 701         host->irq = pdev->irq;
 702         scsi_scan_host(host);
 703         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 704         atomic_set(&acb->rq_map_token, 16);
 705         atomic_set(&acb->ante_token_value, 16);
 706         acb->fw_flag = FW_NORMAL;
 707         init_timer(&acb->eternal_timer);
 708         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 709         acb->eternal_timer.data = (unsigned long) acb;
 710         acb->eternal_timer.function = &arcmsr_request_device_map;
 711         add_timer(&acb->eternal_timer);
 712         if(arcmsr_alloc_sysfs_attr(acb))
 713                 goto out_free_sysfs;
 714         return 0;
 715 out_free_sysfs:
 716 scsi_host_remove:
 717         scsi_remove_host(host);
 718 RAID_controller_stop:
 719         arcmsr_stop_adapter_bgrb(acb);
 720         arcmsr_flush_adapter_cache(acb);
 721         arcmsr_free_ccb_pool(acb);
 722 free_hbb_mu:
 723         arcmsr_free_hbb_mu(acb);
 724 unmap_pci_region:
 725         arcmsr_unmap_pciregion(acb);
 726 pci_release_regs:
 727         pci_release_regions(pdev);
 728 scsi_host_release:
 729         scsi_host_put(host);
 730 pci_disable_dev:
 731         pci_disable_device(pdev);
 732         return -ENODEV;
 733 }
 734
 735 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 736 {
 737         struct MessageUnit_A __iomem *reg = acb->pmuA;
 738         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 739         if (!arcmsr_hba_wait_msgint_ready(acb)) {
 740                 printk(KERN_NOTICE
 741                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 742                         , acb->host->host_no);
 743                 return false;
 744         }
 745         return true;
 746 }
 747
 748 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 749 {
 750         struct MessageUnit_B *reg = acb->pmuB;
 751
 752         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 753         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 754                 printk(KERN_NOTICE
 755                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 756                         , acb->host->host_no);
 757                 return false;
 758         }
 759         return true;
 760 }
 761 static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
 762 {
 763         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 764         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 765         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 766         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
 767                 printk(KERN_NOTICE
 768                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 769                         , pACB->host->host_no);
 770                 return false;
 771         }
 772         return true;
 773 }
 774 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 775 {
 776         uint8_t rtnval = 0;
 777         switch (acb->adapter_type) {
 778         case ACB_ADAPTER_TYPE_A: {
 779                 rtnval = arcmsr_abort_hba_allcmd(acb);
 780                 }
 781                 break;
 782
 783         case ACB_ADAPTER_TYPE_B: {
 784                 rtnval = arcmsr_abort_hbb_allcmd(acb);
 785                 }
 786                 break;
 787
 788         case ACB_ADAPTER_TYPE_C: {
 789                 rtnval = arcmsr_abort_hbc_allcmd(acb);
 790                 }
 791         }
 792         return rtnval;
 793 }
 794
 795 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
 796 {
 797         struct MessageUnit_B *reg = pacb->pmuB;
 798         writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
 799         if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
 800                 printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
 801                 return false;
 802         }
 803         return true;
 804 }
 805
 806 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 807 {
 808         struct scsi_cmnd *pcmd = ccb->pcmd;
 809
 810         scsi_dma_unmap(pcmd);
 811 }
 812
 813 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 814 {
 815         struct AdapterControlBlock *acb = ccb->acb;
 816         struct scsi_cmnd *pcmd = ccb->pcmd;
 817         unsigned long flags;
 818         atomic_dec(&acb->ccboutstandingcount);
 819         arcmsr_pci_unmap_dma(ccb);
 820         ccb->startdone = ARCMSR_CCB_DONE;
 821         spin_lock_irqsave(&acb->ccblist_lock, flags);
 822         list_add_tail(&ccb->list, &acb->ccb_free_list);
 823         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 824         pcmd->scsi_done(pcmd);
 825 }
 826
 827 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 828 {
 829
 830         struct scsi_cmnd *pcmd = ccb->pcmd;
 831         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 832         pcmd->result = DID_OK << 16;
 833         if (sensebuffer) {
 834                 int sense_data_length =
 835                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 836                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 837                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 838                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 839                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 840                 sensebuffer->Valid = 1;
 841         }
 842 }
 843
 844 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 845 {
 846         u32 orig_mask = 0;
 847         switch (acb->adapter_type) {
 848         case ACB_ADAPTER_TYPE_A : {
 849                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 850                 orig_mask = readl(&reg->outbound_intmask);
 851                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 852                                                 &reg->outbound_intmask);
 853                 }
 854                 break;
 855         case ACB_ADAPTER_TYPE_B : {
 856                 struct MessageUnit_B *reg = acb->pmuB;
 857                 orig_mask = readl(reg->iop2drv_doorbell_mask);
 858                 writel(0, reg->iop2drv_doorbell_mask);
 859                 }
 860                 break;
 861         case ACB_ADAPTER_TYPE_C:{
 862                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
 863                 /* disable all outbound interrupt */
 864                 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
 865                 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
 866                 }
 867                 break;
 868         }
 869         return orig_mask;
 870 }
 871
 872 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
 873                         struct CommandControlBlock *ccb, bool error)
 874 {
 875         uint8_t id, lun;
 876         id = ccb->pcmd->device->id;
 877         lun = ccb->pcmd->device->lun;
 878         if (!error) {
 879                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 880                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 881                         ccb->pcmd->result = DID_OK << 16;
 882                         arcmsr_ccb_complete(ccb);
 883         }else{
 884                 switch (ccb->arcmsr_cdb.DeviceStatus) {
 885                 case ARCMSR_DEV_SELECT_TIMEOUT: {
 886                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 887                         ccb->pcmd->result = DID_NO_CONNECT << 16;
 888                         arcmsr_ccb_complete(ccb);
 889                         }
 890                         break;
 891
 892                 case ARCMSR_DEV_ABORTED:
 893
 894                 case ARCMSR_DEV_INIT_FAIL: {
 895                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 896                         ccb->pcmd->result = DID_BAD_TARGET << 16;
 897                         arcmsr_ccb_complete(ccb);
 898                         }
 899                         break;
 900
 901                 case ARCMSR_DEV_CHECK_CONDITION: {
 902                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 903                         arcmsr_report_sense_info(ccb);
 904                         arcmsr_ccb_complete(ccb);
 905                         }
 906                         break;
 907
 908                 default:
 909                         printk(KERN_NOTICE
 910                                 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
 911                                 but got unknown DeviceStatus = 0x%x \n"
 912                                 , acb->host->host_no
 913                                 , id
 914                                 , lun
 915                                 , ccb->arcmsr_cdb.DeviceStatus);
 916                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 917                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
 918                                 arcmsr_ccb_complete(ccb);
 919                         break;
 920                 }
 921         }
 922 }
 923
 924 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
 925
 926 {
 927         int id, lun;
 928         if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
 929                 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
 930                         struct scsi_cmnd *abortcmd = pCCB->pcmd;
 931                         if (abortcmd) {
 932                                 id = abortcmd->device->id;
 933                                 lun = abortcmd->device->lun;
 934                                 abortcmd->result |= DID_ABORT << 16;
 935                                 arcmsr_ccb_complete(pCCB);
 936                                 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
 937                                 acb->host->host_no, pCCB);
 938                         }
 939                         return;
 940                 }
 941                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 942                                 done acb = '0x%p'"
 943                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
 944                                 " ccboutstandingcount = %d \n"
 945                                 , acb->host->host_no
 946                                 , acb
 947                                 , pCCB
 948                                 , pCCB->acb
 949                                 , pCCB->startdone
 950                                 , atomic_read(&acb->ccboutstandingcount));
 951                   return;
 952                 }
 953         arcmsr_report_ccb_state(acb, pCCB, error);
 954 }
 955
 956 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 957 {
 958         int i = 0;
 959         uint32_t flag_ccb;
 960         struct ARCMSR_CDB *pARCMSR_CDB;
 961         bool error;
 962         struct CommandControlBlock *pCCB;
 963         switch (acb->adapter_type) {
 964
 965         case ACB_ADAPTER_TYPE_A: {
 966                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 967                 uint32_t outbound_intstatus;
 968                 outbound_intstatus = readl(&reg->outbound_intstatus) &
 969                                         acb->outbound_int_enable;
 970                 /*clear and abort all outbound posted Q*/
 971                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
 972                 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 973                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 974                         pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
 975                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 976                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 977                         arcmsr_drain_donequeue(acb, pCCB, error);
 978                 }
 979                 }
 980                 break;
 981
 982         case ACB_ADAPTER_TYPE_B: {
 983                 struct MessageUnit_B *reg = acb->pmuB;
 984                 /*clear all outbound posted Q*/
 985                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, &reg->iop2drv_doorbell); /* clear doorbell interrupt */
 986                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 987                         if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 988                                 writel(0, &reg->done_qbuffer[i]);
 989                                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
 990                                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 991                                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 992                                 arcmsr_drain_donequeue(acb, pCCB, error);
 993                         }
 994                         reg->post_qbuffer[i] = 0;
 995                 }
 996                 reg->doneq_index = 0;
 997                 reg->postq_index = 0;
 998                 }
 999                 break;
1000         case ACB_ADAPTER_TYPE_C: {
1001                 struct MessageUnit_C *reg = acb->pmuC;
1002                 struct  ARCMSR_CDB *pARCMSR_CDB;
1003                 uint32_t flag_ccb, ccb_cdb_phy;
1004                 bool error;
1005                 struct CommandControlBlock *pCCB;
1006                 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1007                         /*need to do*/
1008                         flag_ccb = readl(&reg->outbound_queueport_low);
1009                         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1010                         pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
1011                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1012                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1013                         arcmsr_drain_donequeue(acb, pCCB, error);
1014                 }
1015         }
1016         }
1017 }
1018 static void arcmsr_remove(struct pci_dev *pdev)
1019 {
1020         struct Scsi_Host *host = pci_get_drvdata(pdev);
1021         struct AdapterControlBlock *acb =
1022                 (struct AdapterControlBlock *) host->hostdata;
1023         int poll_count = 0;
1024         arcmsr_free_sysfs_attr(acb);
1025         scsi_remove_host(host);
1026         flush_scheduled_work();
1027         del_timer_sync(&acb->eternal_timer);
1028         arcmsr_disable_outbound_ints(acb);
1029         arcmsr_stop_adapter_bgrb(acb);
1030         arcmsr_flush_adapter_cache(acb);
1031         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1032         acb->acb_flags &= ~ACB_F_IOP_INITED;
1033
1034         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1035                 if (!atomic_read(&acb->ccboutstandingcount))
1036                         break;
1037                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1038                 msleep(25);
1039         }
1040
1041         if (atomic_read(&acb->ccboutstandingcount)) {
1042                 int i;
1043
1044                 arcmsr_abort_allcmd(acb);
1045                 arcmsr_done4abort_postqueue(acb);
1046                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1047                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
1048                         if (ccb->startdone == ARCMSR_CCB_START) {
1049                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1050                                 ccb->pcmd->result = DID_ABORT << 16;
1051                                 arcmsr_ccb_complete(ccb);
1052                         }
1053                 }
1054         }
1055         free_irq(pdev->irq, acb);
1056         arcmsr_free_ccb_pool(acb);
1057         arcmsr_free_hbb_mu(acb);
1058         arcmsr_unmap_pciregion(acb);
1059         pci_release_regions(pdev);
1060         scsi_host_put(host);
1061         pci_disable_device(pdev);
1062         pci_set_drvdata(pdev, NULL);
1063 }
1064
1065 static void arcmsr_shutdown(struct pci_dev *pdev)
1066 {
1067         struct Scsi_Host *host = pci_get_drvdata(pdev);
1068         struct AdapterControlBlock *acb =
1069                 (struct AdapterControlBlock *)host->hostdata;
1070         del_timer_sync(&acb->eternal_timer);
1071         arcmsr_disable_outbound_ints(acb);
1072         flush_scheduled_work();
1073         arcmsr_stop_adapter_bgrb(acb);
1074         arcmsr_flush_adapter_cache(acb);
1075 }
1076
1077 static int arcmsr_module_init(void)
1078 {
1079         int error = 0;
1080         error = pci_register_driver(&arcmsr_pci_driver);
1081         return error;
1082 }
1083
1084 static void arcmsr_module_exit(void)
1085 {
1086         pci_unregister_driver(&arcmsr_pci_driver);
1087 }
1088 module_init(arcmsr_module_init);
1089 module_exit(arcmsr_module_exit);
1090
1091 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1092                                                 u32 intmask_org)
1093 {
1094         u32 mask;
1095         switch (acb->adapter_type) {
1096
1097         case ACB_ADAPTER_TYPE_A: {
1098                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1099                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1100                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1101                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1102                 writel(mask, &reg->outbound_intmask);
1103                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1104                 }
1105                 break;
1106
1107         case ACB_ADAPTER_TYPE_B: {
1108                 struct MessageUnit_B *reg = acb->pmuB;
1109                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1110                         ARCMSR_IOP2DRV_DATA_READ_OK |
1111                         ARCMSR_IOP2DRV_CDB_DONE |
1112                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1113                 writel(mask, reg->iop2drv_doorbell_mask);
1114                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1115                 }
1116                 break;
1117         case ACB_ADAPTER_TYPE_C: {
1118                 struct MessageUnit_C *reg = acb->pmuC;
1119                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1120                 writel(intmask_org & mask, &reg->host_int_mask);
1121                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1122                 }
1123         }
1124 }
1125
1126 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1127         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1128 {
1129         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1130         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1131         __le32 address_lo, address_hi;
1132         int arccdbsize = 0x30;
1133         __le32 length = 0;
1134         int i;
1135         struct scatterlist *sg;
1136         int nseg;
1137         ccb->pcmd = pcmd;
1138         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1139         arcmsr_cdb->TargetID = pcmd->device->id;
1140         arcmsr_cdb->LUN = pcmd->device->lun;
1141         arcmsr_cdb->Function = 1;
1142         arcmsr_cdb->Context = 0;
1143         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1144
1145         nseg = scsi_dma_map(pcmd);
1146         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1147                 return FAILED;
1148         scsi_for_each_sg(pcmd, sg, nseg, i) {
1149                 /* Get the physical address of the current data pointer */
1150                 length = cpu_to_le32(sg_dma_len(sg));
1151                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1152                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1153                 if (address_hi == 0) {
1154                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1155
1156                         pdma_sg->address = address_lo;
1157                         pdma_sg->length = length;
1158                         psge += sizeof (struct SG32ENTRY);
1159                         arccdbsize += sizeof (struct SG32ENTRY);
1160                 } else {
1161                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1162
1163                         pdma_sg->addresshigh = address_hi;
1164                         pdma_sg->address = address_lo;
1165                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1166                         psge += sizeof (struct SG64ENTRY);
1167                         arccdbsize += sizeof (struct SG64ENTRY);
1168                 }
1169         }
1170         arcmsr_cdb->sgcount = (uint8_t)nseg;
1171         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1172         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1173         if ( arccdbsize > 256)
1174                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1175         if (pcmd->cmnd[0]|WRITE_6 || pcmd->cmnd[0]|WRITE_10 || pcmd->cmnd[0]|WRITE_12 ){
1176                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1177         }
1178         ccb->arc_cdb_size = arccdbsize;
1179         return SUCCESS;
1180 }
1181
1182 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1183 {
1184         uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1185         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1186         atomic_inc(&acb->ccboutstandingcount);
1187         ccb->startdone = ARCMSR_CCB_START;
1188         switch (acb->adapter_type) {
1189         case ACB_ADAPTER_TYPE_A: {
1190                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1191
1192                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1193                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1194                         &reg->inbound_queueport);
1195                 else {
1196                                 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1197                 }
1198                 }
1199                 break;
1200
1201         case ACB_ADAPTER_TYPE_B: {
1202                 struct MessageUnit_B *reg = acb->pmuB;
1203                 uint32_t ending_index, index = reg->postq_index;
1204
1205                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1206                 writel(0, &reg->post_qbuffer[ending_index]);
1207                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1208                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1209                                                  &reg->post_qbuffer[index]);
1210                 } else {
1211                         writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1212                 }
1213                 index++;
1214                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1215                 reg->postq_index = index;
1216                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1217                 }
1218                 break;
1219         case ACB_ADAPTER_TYPE_C: {
1220                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1221                 uint32_t ccb_post_stamp, arc_cdb_size;
1222
1223                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1224                 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1225                 if (acb->cdb_phyaddr_hi32) {
1226                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1227                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1228                 } else {
1229                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1230                 }
1231                 }
1232         }
1233 }
1234
1235 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1236 {
1237         struct MessageUnit_A __iomem *reg = acb->pmuA;
1238         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1239         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1240         if (!arcmsr_hba_wait_msgint_ready(acb)) {
1241                 printk(KERN_NOTICE
1242                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1243                         , acb->host->host_no);
1244         }
1245 }
1246
1247 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1248 {
1249         struct MessageUnit_B *reg = acb->pmuB;
1250         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1251         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1252
1253         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1254                 printk(KERN_NOTICE
1255                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1256                         , acb->host->host_no);
1257         }
1258 }
1259
1260 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1261 {
1262         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1263         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1264         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1265         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1266         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1267                 printk(KERN_NOTICE
1268                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1269                         , pACB->host->host_no);
1270         }
1271         return;
1272 }
1273 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1274 {
1275         switch (acb->adapter_type) {
1276         case ACB_ADAPTER_TYPE_A: {
1277                 arcmsr_stop_hba_bgrb(acb);
1278                 }
1279                 break;
1280
1281         case ACB_ADAPTER_TYPE_B: {
1282                 arcmsr_stop_hbb_bgrb(acb);
1283                 }
1284                 break;
1285         case ACB_ADAPTER_TYPE_C: {
1286                 arcmsr_stop_hbc_bgrb(acb);
1287                 }
1288         }
1289 }
1290
1291 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1292 {
1293         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1294 }
1295
1296 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1297 {
1298         switch (acb->adapter_type) {
1299         case ACB_ADAPTER_TYPE_A: {
1300                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1301                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1302                 }
1303                 break;
1304
1305         case ACB_ADAPTER_TYPE_B: {
1306                 struct MessageUnit_B *reg = acb->pmuB;
1307                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1308                 }
1309                 break;
1310         case ACB_ADAPTER_TYPE_C: {
1311                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1312                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1313                 }
1314         }
1315 }
1316
1317 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1318 {
1319         switch (acb->adapter_type) {
1320         case ACB_ADAPTER_TYPE_A: {
1321                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1322                 /*
1323                 ** push inbound doorbell tell iop, driver data write ok
1324                 ** and wait reply on next hwinterrupt for next Qbuffer post
1325                 */
1326                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1327                 }
1328                 break;
1329
1330         case ACB_ADAPTER_TYPE_B: {
1331                 struct MessageUnit_B *reg = acb->pmuB;
1332                 /*
1333                 ** push inbound doorbell tell iop, driver data write ok
1334                 ** and wait reply on next hwinterrupt for next Qbuffer post
1335                 */
1336                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1337                 }
1338                 break;
1339         case ACB_ADAPTER_TYPE_C: {
1340                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1341                 /*
1342                 ** push inbound doorbell tell iop, driver data write ok
1343                 ** and wait reply on next hwinterrupt for next Qbuffer post
1344                 */
1345                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1346                 }
1347                 break;
1348         }
1349 }
1350
1351 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1352 {
1353         struct QBUFFER __iomem *qbuffer = NULL;
1354         switch (acb->adapter_type) {
1355
1356         case ACB_ADAPTER_TYPE_A: {
1357                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1358                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1359                 }
1360                 break;
1361
1362         case ACB_ADAPTER_TYPE_B: {
1363                 struct MessageUnit_B *reg = acb->pmuB;
1364                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1365                 }
1366                 break;
1367         case ACB_ADAPTER_TYPE_C: {
1368                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1369                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1370                 }
1371         }
1372         return qbuffer;
1373 }
1374
1375 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1376 {
1377         struct QBUFFER __iomem *pqbuffer = NULL;
1378         switch (acb->adapter_type) {
1379
1380         case ACB_ADAPTER_TYPE_A: {
1381                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1382                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1383                 }
1384                 break;
1385
1386         case ACB_ADAPTER_TYPE_B: {
1387                 struct MessageUnit_B  *reg = acb->pmuB;
1388                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1389                 }
1390                 break;
1391         case ACB_ADAPTER_TYPE_C: {
1392                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1393                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1394         }
1395
1396         }
1397         return pqbuffer;
1398 }
1399
1400 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1401 {
1402         struct QBUFFER __iomem *prbuffer;
1403         struct QBUFFER *pQbuffer;
1404         uint8_t __iomem *iop_data;
1405         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1406         rqbuf_lastindex = acb->rqbuf_lastindex;
1407         rqbuf_firstindex = acb->rqbuf_firstindex;
1408         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1409         iop_data = (uint8_t __iomem *)prbuffer->data;
1410         iop_len = prbuffer->data_len;
1411         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1412
1413         if (my_empty_len >= iop_len)
1414         {
1415                 while (iop_len > 0) {
1416                         pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1417                         memcpy(pQbuffer, iop_data, 1);
1418                         rqbuf_lastindex++;
1419                         rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1420                         iop_data++;
1421                         iop_len--;
1422                 }
1423                 acb->rqbuf_lastindex = rqbuf_lastindex;
1424                 arcmsr_iop_message_read(acb);
1425         }
1426
1427         else {
1428                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1429         }
1430 }
1431
1432 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1433 {
1434         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1435         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1436                 uint8_t *pQbuffer;
1437                 struct QBUFFER __iomem *pwbuffer;
1438                 uint8_t __iomem *iop_data;
1439                 int32_t allxfer_len = 0;
1440
1441                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1442                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1443                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1444
1445                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1446                                                         (allxfer_len < 124)) {
1447                         pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1448                         memcpy(iop_data, pQbuffer, 1);
1449                         acb->wqbuf_firstindex++;
1450                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1451                         iop_data++;
1452                         allxfer_len++;
1453                 }
1454                 pwbuffer->data_len = allxfer_len;
1455
1456                 arcmsr_iop_message_wrote(acb);
1457         }
1458
1459         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1460                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1461         }
1462 }
1463
1464 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1465 {
1466         uint32_t outbound_doorbell;
1467         struct MessageUnit_A __iomem *reg = acb->pmuA;
1468         outbound_doorbell = readl(&reg->outbound_doorbell);
1469         writel(outbound_doorbell, &reg->outbound_doorbell);
1470         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1471                 arcmsr_iop2drv_data_wrote_handle(acb);
1472         }
1473
1474         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1475                 arcmsr_iop2drv_data_read_handle(acb);
1476         }
1477 }
1478 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1479 {
1480         uint32_t outbound_doorbell;
1481         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1482         /*
1483         *******************************************************************
1484         **  Maybe here we need to check wrqbuffer_lock is lock or not
1485         **  DOORBELL: din! don!
1486         **  check if there are any mail need to pack from firmware
1487         *******************************************************************
1488         */
1489         outbound_doorbell = readl(&reg->outbound_doorbell);
1490         writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1491         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1492                 arcmsr_iop2drv_data_wrote_handle(pACB);
1493         }
1494         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1495                 arcmsr_iop2drv_data_read_handle(pACB);
1496         }
1497         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1498                 arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
1499         }
1500         return;
1501 }
1502 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1503 {
1504         uint32_t flag_ccb;
1505         struct MessageUnit_A __iomem *reg = acb->pmuA;
1506         struct ARCMSR_CDB *pARCMSR_CDB;
1507         struct CommandControlBlock *pCCB;
1508         bool error;
1509         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1510                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1511                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1512                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1513                 arcmsr_drain_donequeue(acb, pCCB, error);
1514         }
1515 }
1516
1517 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1518 {
1519         uint32_t index;
1520         uint32_t flag_ccb;
1521         struct MessageUnit_B *reg = acb->pmuB;
1522         struct ARCMSR_CDB *pARCMSR_CDB;
1523         struct CommandControlBlock *pCCB;
1524         bool error;
1525         index = reg->doneq_index;
1526         while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1527                 writel(0, &reg->done_qbuffer[index]);
1528                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1529                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1530                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1531                 arcmsr_drain_donequeue(acb, pCCB, error);
1532                 index++;
1533                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1534                 reg->doneq_index = index;
1535         }
1536 }
1537
1538 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1539 {
1540         struct MessageUnit_C *phbcmu;
1541         struct ARCMSR_CDB *arcmsr_cdb;
1542         struct CommandControlBlock *ccb;
1543         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1544         int error;
1545
1546         phbcmu = (struct MessageUnit_C *)acb->pmuC;
1547         /* areca cdb command done */
1548         /* Use correct offset and size for syncing */
1549
1550         while (readl(&phbcmu->host_int_status) &
1551         ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1552         /* check if command done with no error*/
1553         flag_ccb = readl(&phbcmu->outbound_queueport_low);
1554         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1555         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1556         ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1557         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1558         /* check if command done with no error */
1559         arcmsr_drain_donequeue(acb, ccb, error);
1560         if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1561                 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1562                 break;
1563         }
1564         throttling++;
1565         }
1566 }
1567 /*
1568 **********************************************************************************
1569 ** Handle a message interrupt
1570 **
1571 ** The only message interrupt we expect is in response to a query for the current adapter config.
1572 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1573 **********************************************************************************
1574 */
1575 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1576 {
1577         struct MessageUnit_A *reg  = acb->pmuA;
1578         /*clear interrupt and message state*/
1579         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1580         schedule_work(&acb->arcmsr_do_message_isr_bh);
1581 }
1582 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1583 {
1584         struct MessageUnit_B *reg  = acb->pmuB;
1585
1586         /*clear interrupt and message state*/
1587         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1588         schedule_work(&acb->arcmsr_do_message_isr_bh);
1589 }
1590 /*
1591 **********************************************************************************
1592 ** Handle a message interrupt
1593 **
1594 ** The only message interrupt we expect is in response to a query for the
1595 ** current adapter config.
1596 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1597 **********************************************************************************
1598 */
1599 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1600 {
1601         struct MessageUnit_C *reg  = acb->pmuC;
1602         /*clear interrupt and message state*/
1603         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1604         schedule_work(&acb->arcmsr_do_message_isr_bh);
1605 }
1606
1607 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1608 {
1609         uint32_t outbound_intstatus;
1610         struct MessageUnit_A __iomem *reg = acb->pmuA;
1611         outbound_intstatus = readl(&reg->outbound_intstatus) &
1612                 acb->outbound_int_enable;
1613         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1614                 return 1;
1615         }
1616         writel(outbound_intstatus, &reg->outbound_intstatus);
1617         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1618                 arcmsr_hba_doorbell_isr(acb);
1619         }
1620         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1621                 arcmsr_hba_postqueue_isr(acb);
1622         }
1623         if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)        {
1624                 /* messenger of "driver to iop commands" */
1625                 arcmsr_hba_message_isr(acb);
1626         }
1627         return 0;
1628 }
1629
1630 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1631 {
1632         uint32_t outbound_doorbell;
1633         struct MessageUnit_B *reg = acb->pmuB;
1634         outbound_doorbell = readl(reg->iop2drv_doorbell) &
1635                                 acb->outbound_int_enable;
1636         if (!outbound_doorbell)
1637                 return 1;
1638
1639         writel(~outbound_doorbell, reg->iop2drv_doorbell);
1640         /*in case the last action of doorbell interrupt clearance is cached,
1641         this action can push HW to write down the clear bit*/
1642         readl(reg->iop2drv_doorbell);
1643         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1644         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1645                 arcmsr_iop2drv_data_wrote_handle(acb);
1646         }
1647         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1648                 arcmsr_iop2drv_data_read_handle(acb);
1649         }
1650         if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1651                 arcmsr_hbb_postqueue_isr(acb);
1652         }
1653         if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1654                 /* messenger of "driver to iop commands" */
1655                 arcmsr_hbb_message_isr(acb);
1656         }
1657         return 0;
1658 }
1659
1660 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1661 {
1662         uint32_t host_interrupt_status;
1663         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1664         /*
1665         *********************************************
1666         **   check outbound intstatus
1667         *********************************************
1668         */
1669         host_interrupt_status = readl(&phbcmu->host_int_status);
1670         if (!host_interrupt_status) {
1671                 /*it must be share irq*/
1672                 return 1;
1673         }
1674         /* MU ioctl transfer doorbell interrupts*/
1675         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1676                 arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
1677         }
1678         /* MU post queue interrupts*/
1679         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1680                 arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
1681         }
1682         return 0;
1683 }
1684 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1685 {
1686         switch (acb->adapter_type) {
1687         case ACB_ADAPTER_TYPE_A: {
1688                 if (arcmsr_handle_hba_isr(acb)) {
1689                         return IRQ_NONE;
1690                 }
1691                 }
1692                 break;
1693
1694         case ACB_ADAPTER_TYPE_B: {
1695                 if (arcmsr_handle_hbb_isr(acb)) {
1696                         return IRQ_NONE;
1697                 }
1698                 }
1699                 break;
1700          case ACB_ADAPTER_TYPE_C: {
1701                 if (arcmsr_handle_hbc_isr(acb)) {
1702                         return IRQ_NONE;
1703                 }
1704                 }
1705         }
1706         return IRQ_HANDLED;
1707 }
1708
1709 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1710 {
1711         if (acb) {
1712                 /* stop adapter background rebuild */
1713                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1714                         uint32_t intmask_org;
1715                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1716                         intmask_org = arcmsr_disable_outbound_ints(acb);
1717                         arcmsr_stop_adapter_bgrb(acb);
1718                         arcmsr_flush_adapter_cache(acb);
1719                         arcmsr_enable_outbound_ints(acb, intmask_org);
1720                 }
1721         }
1722 }
1723
1724 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1725 {
1726         int32_t wqbuf_firstindex, wqbuf_lastindex;
1727         uint8_t *pQbuffer;
1728         struct QBUFFER __iomem *pwbuffer;
1729         uint8_t __iomem *iop_data;
1730         int32_t allxfer_len = 0;
1731         pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1732         iop_data = (uint8_t __iomem *)pwbuffer->data;
1733         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1734                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1735                 wqbuf_firstindex = acb->wqbuf_firstindex;
1736                 wqbuf_lastindex = acb->wqbuf_lastindex;
1737                 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1738                         pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1739                         memcpy(iop_data, pQbuffer, 1);
1740                         wqbuf_firstindex++;
1741                         wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1742                         iop_data++;
1743                         allxfer_len++;
1744                 }
1745                 acb->wqbuf_firstindex = wqbuf_firstindex;
1746                 pwbuffer->data_len = allxfer_len;
1747                 arcmsr_iop_message_wrote(acb);
1748         }
1749 }
1750
1751 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1752                                         struct scsi_cmnd *cmd)
1753 {
1754         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1755         int retvalue = 0, transfer_len = 0;
1756         char *buffer;
1757         struct scatterlist *sg;
1758         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1759                                                 (uint32_t ) cmd->cmnd[6] << 16 |
1760                                                 (uint32_t ) cmd->cmnd[7] << 8  |
1761                                                 (uint32_t ) cmd->cmnd[8];
1762                                                 /* 4 bytes: Areca io control code */
1763         sg = scsi_sglist(cmd);
1764         buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1765         if (scsi_sg_count(cmd) > 1) {
1766                 retvalue = ARCMSR_MESSAGE_FAIL;
1767                 goto message_out;
1768         }
1769         transfer_len += sg->length;
1770
1771         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1772                 retvalue = ARCMSR_MESSAGE_FAIL;
1773                 goto message_out;
1774         }
1775         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1776         switch(controlcode) {
1777
1778         case ARCMSR_MESSAGE_READ_RQBUFFER: {
1779                 unsigned char *ver_addr;
1780                 uint8_t *pQbuffer, *ptmpQbuffer;
1781                 int32_t allxfer_len = 0;
1782
1783                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1784                 if (!ver_addr) {
1785                         retvalue = ARCMSR_MESSAGE_FAIL;
1786                         goto message_out;
1787                 }
1788
1789                 ptmpQbuffer = ver_addr;
1790                 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1791                         && (allxfer_len < 1031)) {
1792                         pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1793                         memcpy(ptmpQbuffer, pQbuffer, 1);
1794                         acb->rqbuf_firstindex++;
1795                         acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1796                         ptmpQbuffer++;
1797                         allxfer_len++;
1798                 }
1799                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1800
1801                         struct QBUFFER __iomem *prbuffer;
1802                         uint8_t __iomem *iop_data;
1803                         int32_t iop_len;
1804
1805                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1806                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1807                         iop_data = prbuffer->data;
1808                         iop_len = readl(&prbuffer->data_len);
1809                         while (iop_len > 0) {
1810                                 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1811                                 acb->rqbuf_lastindex++;
1812                                 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1813                                 iop_data++;
1814                                 iop_len--;
1815                         }
1816                         arcmsr_iop_message_read(acb);
1817                 }
1818                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1819                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1820                 if(acb->fw_flag == FW_DEADLOCK) {
1821                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1822                 }else{
1823                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1824                 }
1825                 kfree(ver_addr);
1826                 }
1827                 break;
1828
1829         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1830                 unsigned char *ver_addr;
1831                 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1832                 uint8_t *pQbuffer, *ptmpuserbuffer;
1833
1834                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1835                 if (!ver_addr) {
1836                         retvalue = ARCMSR_MESSAGE_FAIL;
1837                         goto message_out;
1838                 }
1839                 if(acb->fw_flag == FW_DEADLOCK) {
1840                         pcmdmessagefld->cmdmessage.ReturnCode =
1841                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1842                 }else{
1843                         pcmdmessagefld->cmdmessage.ReturnCode =
1844                         ARCMSR_MESSAGE_RETURNCODE_OK;
1845                 }
1846                 ptmpuserbuffer = ver_addr;
1847                 user_len = pcmdmessagefld->cmdmessage.Length;
1848                 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1849                 wqbuf_lastindex = acb->wqbuf_lastindex;
1850                 wqbuf_firstindex = acb->wqbuf_firstindex;
1851                 if (wqbuf_lastindex != wqbuf_firstindex) {
1852                         struct SENSE_DATA *sensebuffer =
1853                                 (struct SENSE_DATA *)cmd->sense_buffer;
1854                         arcmsr_post_ioctldata2iop(acb);
1855                         /* has error report sensedata */
1856                         sensebuffer->ErrorCode = 0x70;
1857                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
1858                         sensebuffer->AdditionalSenseLength = 0x0A;
1859                         sensebuffer->AdditionalSenseCode = 0x20;
1860                         sensebuffer->Valid = 1;
1861                         retvalue = ARCMSR_MESSAGE_FAIL;
1862                 } else {
1863                         my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1864                                 &(ARCMSR_MAX_QBUFFER - 1);
1865                         if (my_empty_len >= user_len) {
1866                                 while (user_len > 0) {
1867                                         pQbuffer =
1868                                         &acb->wqbuffer[acb->wqbuf_lastindex];
1869                                         memcpy(pQbuffer, ptmpuserbuffer, 1);
1870                                         acb->wqbuf_lastindex++;
1871                                         acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1872                                         ptmpuserbuffer++;
1873                                         user_len--;
1874                                 }
1875                                 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1876                                         acb->acb_flags &=
1877                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1878                                         arcmsr_post_ioctldata2iop(acb);
1879                                 }
1880                         } else {
1881                                 /* has error report sensedata */
1882                                 struct SENSE_DATA *sensebuffer =
1883                                         (struct SENSE_DATA *)cmd->sense_buffer;
1884                                 sensebuffer->ErrorCode = 0x70;
1885                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1886                                 sensebuffer->AdditionalSenseLength = 0x0A;
1887                                 sensebuffer->AdditionalSenseCode = 0x20;
1888                                 sensebuffer->Valid = 1;
1889                                 retvalue = ARCMSR_MESSAGE_FAIL;
1890                         }
1891                         }
1892                         kfree(ver_addr);
1893                 }
1894                 break;
1895
1896         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1897                 uint8_t *pQbuffer = acb->rqbuffer;
1898                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1899                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1900                         arcmsr_iop_message_read(acb);
1901                 }
1902                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1903                 acb->rqbuf_firstindex = 0;
1904                 acb->rqbuf_lastindex = 0;
1905                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1906                 if(acb->fw_flag == FW_DEADLOCK) {
1907                         pcmdmessagefld->cmdmessage.ReturnCode =
1908                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1909                 }else{
1910                         pcmdmessagefld->cmdmessage.ReturnCode =
1911                         ARCMSR_MESSAGE_RETURNCODE_OK;
1912                 }
1913                 }
1914                 break;
1915
1916         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1917                 uint8_t *pQbuffer = acb->wqbuffer;
1918                 if(acb->fw_flag == FW_DEADLOCK) {
1919                         pcmdmessagefld->cmdmessage.ReturnCode =
1920                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1921                 }else{
1922                         pcmdmessagefld->cmdmessage.ReturnCode =
1923                         ARCMSR_MESSAGE_RETURNCODE_OK;
1924                 }
1925
1926                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1927                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1928                         arcmsr_iop_message_read(acb);
1929                 }
1930                 acb->acb_flags |=
1931                         (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1932                                 ACB_F_MESSAGE_WQBUFFER_READED);
1933                 acb->wqbuf_firstindex = 0;
1934                 acb->wqbuf_lastindex = 0;
1935                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1936                 }
1937                 break;
1938
1939         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1940                 uint8_t *pQbuffer;
1941
1942                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1943                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1944                         arcmsr_iop_message_read(acb);
1945                 }
1946                 acb->acb_flags |=
1947                         (ACB_F_MESSAGE_WQBUFFER_CLEARED
1948                         | ACB_F_MESSAGE_RQBUFFER_CLEARED
1949                         | ACB_F_MESSAGE_WQBUFFER_READED);
1950                 acb->rqbuf_firstindex = 0;
1951                 acb->rqbuf_lastindex = 0;
1952                 acb->wqbuf_firstindex = 0;
1953                 acb->wqbuf_lastindex = 0;
1954                 pQbuffer = acb->rqbuffer;
1955                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1956                 pQbuffer = acb->wqbuffer;
1957                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1958                 if(acb->fw_flag == FW_DEADLOCK) {
1959                         pcmdmessagefld->cmdmessage.ReturnCode =
1960                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1961                 }else{
1962                         pcmdmessagefld->cmdmessage.ReturnCode =
1963                         ARCMSR_MESSAGE_RETURNCODE_OK;
1964                 }
1965                 }
1966                 break;
1967
1968         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1969                 if(acb->fw_flag == FW_DEADLOCK) {
1970                         pcmdmessagefld->cmdmessage.ReturnCode =
1971                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1972                 }else{
1973                         pcmdmessagefld->cmdmessage.ReturnCode =
1974                         ARCMSR_MESSAGE_RETURNCODE_3F;
1975                 }
1976                 break;
1977                 }
1978         case ARCMSR_MESSAGE_SAY_HELLO: {
1979                 int8_t *hello_string = "Hello! I am ARCMSR";
1980                 if(acb->fw_flag == FW_DEADLOCK) {
1981                         pcmdmessagefld->cmdmessage.ReturnCode =
1982                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1983                 }else{
1984                         pcmdmessagefld->cmdmessage.ReturnCode =
1985                         ARCMSR_MESSAGE_RETURNCODE_OK;
1986                 }
1987                 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1988                         , (int16_t)strlen(hello_string));
1989                 }
1990                 break;
1991
1992         case ARCMSR_MESSAGE_SAY_GOODBYE:
1993                 if(acb->fw_flag == FW_DEADLOCK) {
1994                         pcmdmessagefld->cmdmessage.ReturnCode =
1995                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1996                 }
1997                 arcmsr_iop_parking(acb);
1998                 break;
1999
2000         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
2001                 if(acb->fw_flag == FW_DEADLOCK) {
2002                         pcmdmessagefld->cmdmessage.ReturnCode =
2003                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2004                 }
2005                 arcmsr_flush_adapter_cache(acb);
2006                 break;
2007
2008         default:
2009                 retvalue = ARCMSR_MESSAGE_FAIL;
2010         }
2011         message_out:
2012         sg = scsi_sglist(cmd);
2013         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2014         return retvalue;
2015 }
2016
2017 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
2018 {
2019         struct list_head *head = &acb->ccb_free_list;
2020         struct CommandControlBlock *ccb = NULL;
2021         unsigned long flags;
2022         spin_lock_irqsave(&acb->ccblist_lock, flags);
2023         if (!list_empty(head)) {
2024                 ccb = list_entry(head->next, struct CommandControlBlock, list);
2025                 list_del_init(&ccb->list);
2026         }else{
2027                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2028                 return 0;
2029         }
2030         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2031         return ccb;
2032 }
2033
2034 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2035                 struct scsi_cmnd *cmd)
2036 {
2037         switch (cmd->cmnd[0]) {
2038         case INQUIRY: {
2039                 unsigned char inqdata[36];
2040                 char *buffer;
2041                 struct scatterlist *sg;
2042
2043                 if (cmd->device->lun) {
2044                         cmd->result = (DID_TIME_OUT << 16);
2045                         cmd->scsi_done(cmd);
2046                         return;
2047                 }
2048                 inqdata[0] = TYPE_PROCESSOR;
2049                 /* Periph Qualifier & Periph Dev Type */
2050                 inqdata[1] = 0;
2051                 /* rem media bit & Dev Type Modifier */
2052                 inqdata[2] = 0;
2053                 /* ISO, ECMA, & ANSI versions */
2054                 inqdata[4] = 31;
2055                 /* length of additional data */
2056                 strncpy(&inqdata[8], "Areca   ", 8);
2057                 /* Vendor Identification */
2058                 strncpy(&inqdata[16], "RAID controller ", 16);
2059                 /* Product Identification */
2060                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2061
2062                 sg = scsi_sglist(cmd);
2063                 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
2064
2065                 memcpy(buffer, inqdata, sizeof(inqdata));
2066                 sg = scsi_sglist(cmd);
2067                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2068
2069                 cmd->scsi_done(cmd);
2070         }
2071         break;
2072         case WRITE_BUFFER:
2073         case READ_BUFFER: {
2074                 if (arcmsr_iop_message_xfer(acb, cmd))
2075                         cmd->result = (DID_ERROR << 16);
2076                 cmd->scsi_done(cmd);
2077         }
2078         break;
2079         default:
2080                 cmd->scsi_done(cmd);
2081         }
2082 }
2083
2084 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
2085         void (* done)(struct scsi_cmnd *))
2086 {
2087         struct Scsi_Host *host = cmd->device->host;
2088         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2089         struct CommandControlBlock *ccb;
2090         int target = cmd->device->id;
2091         int lun = cmd->device->lun;
2092         uint8_t scsicmd = cmd->cmnd[0];
2093         cmd->scsi_done = done;
2094         cmd->host_scribble = NULL;
2095         cmd->result = 0;
2096         if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2097                 if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2098                         cmd->result = (DID_NO_CONNECT << 16);
2099                 }
2100                 cmd->scsi_done(cmd);
2101                 return 0;
2102         }
2103         if (target == 16) {
2104                 /* virtual device for iop message transfer */
2105                 arcmsr_handle_virtual_command(acb, cmd);
2106                 return 0;
2107         }
2108         if (atomic_read(&acb->ccboutstandingcount) >=
2109                         ARCMSR_MAX_OUTSTANDING_CMD)
2110                 return SCSI_MLQUEUE_HOST_BUSY;
2111         if ((scsicmd == SCSI_CMD_ARECA_SPECIFIC)) {
2112                 printk(KERN_NOTICE "Receiveing SCSI_CMD_ARECA_SPECIFIC command..\n");
2113                 return 0;
2114         }
2115         ccb = arcmsr_get_freeccb(acb);
2116         if (!ccb)
2117                 return SCSI_MLQUEUE_HOST_BUSY;
2118         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2119                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2120                 cmd->scsi_done(cmd);
2121                 return 0;
2122         }
2123         arcmsr_post_ccb(acb, ccb);
2124         return 0;
2125 }
2126
2127 static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2128 {
2129         struct MessageUnit_A __iomem *reg = acb->pmuA;
2130         char *acb_firm_model = acb->firm_model;
2131         char *acb_firm_version = acb->firm_version;
2132         char *acb_device_map = acb->device_map;
2133         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2134         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2135         char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2136         int count;
2137         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2138         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2139                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2140                         miscellaneous data' timeout \n", acb->host->host_no);
2141                 return false;
2142         }
2143         count = 8;
2144         while (count){
2145                 *acb_firm_model = readb(iop_firm_model);
2146                 acb_firm_model++;
2147                 iop_firm_model++;
2148                 count--;
2149         }
2150
2151         count = 16;
2152         while (count){
2153                 *acb_firm_version = readb(iop_firm_version);
2154                 acb_firm_version++;
2155                 iop_firm_version++;
2156                 count--;
2157         }
2158
2159         count=16;
2160         while(count){
2161                 *acb_device_map = readb(iop_device_map);
2162                 acb_device_map++;
2163                 iop_device_map++;
2164                 count--;
2165         }
2166         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2167                 acb->host->host_no,
2168                 acb->firm_version,
2169                 acb->firm_model);
2170         acb->signature = readl(&reg->message_rwbuffer[0]);
2171         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2172         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2173         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2174         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2175         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2176         return true;
2177 }
2178 static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2179 {
2180         struct MessageUnit_B *reg = acb->pmuB;
2181         struct pci_dev *pdev = acb->pdev;
2182         void *dma_coherent;
2183         dma_addr_t dma_coherent_handle;
2184         char *acb_firm_model = acb->firm_model;
2185         char *acb_firm_version = acb->firm_version;
2186         char *acb_device_map = acb->device_map;
2187         char __iomem *iop_firm_model;
2188         /*firm_model,15,60-67*/
2189         char __iomem *iop_firm_version;
2190         /*firm_version,17,68-83*/
2191         char __iomem *iop_device_map;
2192         /*firm_version,21,84-99*/
2193         int count;
2194         dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2195         if (!dma_coherent){
2196                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2197                 return false;
2198         }
2199         acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2200         reg = (struct MessageUnit_B *)dma_coherent;
2201         acb->pmuB = reg;
2202         reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2203         reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2204         reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2205         reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2206         reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2207         reg->message_rbuffer =  (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2208         reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2209         iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2210         iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2211         iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2212
2213         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2214         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2215                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2216                         miscellaneous data' timeout \n", acb->host->host_no);
2217                 return false;
2218         }
2219         count = 8;
2220         while (count){
2221                 *acb_firm_model = readb(iop_firm_model);
2222                 acb_firm_model++;
2223                 iop_firm_model++;
2224                 count--;
2225         }
2226         count = 16;
2227         while (count){
2228                 *acb_firm_version = readb(iop_firm_version);
2229                 acb_firm_version++;
2230                 iop_firm_version++;
2231                 count--;
2232         }
2233
2234         count = 16;
2235         while(count){
2236                 *acb_device_map = readb(iop_device_map);
2237                 acb_device_map++;
2238                 iop_device_map++;
2239                 count--;
2240         }
2241
2242         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2243                 acb->host->host_no,
2244                 acb->firm_version,
2245                 acb->firm_model);
2246
2247         acb->signature = readl(&reg->message_rwbuffer[1]);
2248         /*firm_signature,1,00-03*/
2249         acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2250         /*firm_request_len,1,04-07*/
2251         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2252         /*firm_numbers_queue,2,08-11*/
2253         acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2254         /*firm_sdram_size,3,12-15*/
2255         acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2256         /*firm_ide_channels,4,16-19*/
2257         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2258         /*firm_ide_channels,4,16-19*/
2259         return true;
2260 }
2261
2262 static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2263 {
2264         uint32_t intmask_org, Index, firmware_state = 0;
2265         struct MessageUnit_C *reg = pACB->pmuC;
2266         char *acb_firm_model = pACB->firm_model;
2267         char *acb_firm_version = pACB->firm_version;
2268         char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2269         char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2270         int count;
2271         /* disable all outbound interrupt */
2272         intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2273         writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2274         /* wait firmware ready */
2275         do {
2276                 firmware_state = readl(&reg->outbound_msgaddr1);
2277         } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2278         /* post "get config" instruction */
2279         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2280         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2281         /* wait message ready */
2282         for (Index = 0; Index < 2000; Index++) {
2283                 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2284                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2285                         break;
2286                 }
2287                 udelay(10);
2288         } /*max 1 seconds*/
2289         if (Index >= 2000) {
2290                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2291                         miscellaneous data' timeout \n", pACB->host->host_no);
2292                 return false;
2293         }
2294         count = 8;
2295         while (count) {
2296                 *acb_firm_model = readb(iop_firm_model);
2297                 acb_firm_model++;
2298                 iop_firm_model++;
2299                 count--;
2300         }
2301         count = 16;
2302         while (count) {
2303                 *acb_firm_version = readb(iop_firm_version);
2304                 acb_firm_version++;
2305                 iop_firm_version++;
2306                 count--;
2307         }
2308         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2309                 pACB->host->host_no,
2310                 pACB->firm_version,
2311                 pACB->firm_model);
2312         pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2313         pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2314         pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2315         pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2316         pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2317         /*all interrupt service will be enable at arcmsr_iop_init*/
2318         return true;
2319 }
2320 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2321 {
2322         if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2323                 return arcmsr_get_hba_config(acb);
2324         else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2325                 return arcmsr_get_hbb_config(acb);
2326         else
2327                 return arcmsr_get_hbc_config(acb);
2328 }
2329
2330 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2331         struct CommandControlBlock *poll_ccb)
2332 {
2333         struct MessageUnit_A __iomem *reg = acb->pmuA;
2334         struct CommandControlBlock *ccb;
2335         struct ARCMSR_CDB *arcmsr_cdb;
2336         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2337         int rtn;
2338         bool error;
2339         polling_hba_ccb_retry:
2340         poll_count++;
2341         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2342         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2343         while (1) {
2344                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2345                         if (poll_ccb_done){
2346                                 rtn = SUCCESS;
2347                                 break;
2348                         }else {
2349                                 msleep(25);
2350                                 if (poll_count > 100){
2351                                         rtn = FAILED;
2352                                         break;
2353                                 }
2354                                 goto polling_hba_ccb_retry;
2355                         }
2356                 }
2357                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2358                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2359                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2360                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2361                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2362                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2363                                         " poll command abort successfully \n"
2364                                         , acb->host->host_no
2365                                         , ccb->pcmd->device->id
2366                                         , ccb->pcmd->device->lun
2367                                         , ccb);
2368                                 ccb->pcmd->result = DID_ABORT << 16;
2369                                 arcmsr_ccb_complete(ccb);
2370                                 continue;
2371                         }
2372                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2373                                 " command done ccb = '0x%p'"
2374                                 "ccboutstandingcount = %d \n"
2375                                 , acb->host->host_no
2376                                 , ccb
2377                                 , atomic_read(&acb->ccboutstandingcount));
2378                         continue;
2379                 }
2380                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2381                 arcmsr_report_ccb_state(acb, ccb, error);
2382         }
2383         return rtn;
2384 }
2385
2386 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2387                                         struct CommandControlBlock *poll_ccb)
2388 {
2389         struct MessageUnit_B *reg = acb->pmuB;
2390         struct ARCMSR_CDB *arcmsr_cdb;
2391         struct CommandControlBlock *ccb;
2392         uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2393         int index, rtn;
2394         bool error;
2395         polling_hbb_ccb_retry:
2396         poll_count++;
2397         /* clear doorbell interrupt */
2398         writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2399         while(1){
2400                 index = reg->doneq_index;
2401                 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2402                         if (poll_ccb_done){
2403                                 rtn = SUCCESS;
2404                                 break;
2405                         }else {
2406                                 msleep(25);
2407                                 if (poll_count > 100){
2408                                         rtn = FAILED;
2409                                         break;
2410                                 }
2411                                 goto polling_hbb_ccb_retry;
2412                         }
2413                 }
2414                 writel(0, &reg->done_qbuffer[index]);
2415                 index++;
2416                 /*if last index number set it to 0 */
2417                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2418                 reg->doneq_index = index;
2419                 /* check if command done with no error*/
2420                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2421                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2422                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2423                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2424                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2425                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2426                                         " poll command abort successfully \n"
2427                                         ,acb->host->host_no
2428                                         ,ccb->pcmd->device->id
2429                                         ,ccb->pcmd->device->lun
2430                                         ,ccb);
2431                                 ccb->pcmd->result = DID_ABORT << 16;
2432                                 arcmsr_ccb_complete(ccb);
2433                                 continue;
2434                         }
2435                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2436                                 " command done ccb = '0x%p'"
2437                                 "ccboutstandingcount = %d \n"
2438                                 , acb->host->host_no
2439                                 , ccb
2440                                 , atomic_read(&acb->ccboutstandingcount));
2441                         continue;
2442                 }
2443                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2444                 arcmsr_report_ccb_state(acb, ccb, error);
2445         }
2446         return rtn;
2447 }
2448
2449 static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2450 {
2451         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2452         uint32_t flag_ccb, ccb_cdb_phy;
2453         struct ARCMSR_CDB *arcmsr_cdb;
2454         bool error;
2455         struct CommandControlBlock *pCCB;
2456         uint32_t poll_ccb_done = 0, poll_count = 0;
2457         int rtn;
2458 polling_hbc_ccb_retry:
2459         poll_count++;
2460         while (1) {
2461                 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2462                         if (poll_ccb_done) {
2463                                 rtn = SUCCESS;
2464                                 break;
2465                         } else {
2466                                 msleep(25);
2467                                 if (poll_count > 100) {
2468                                         rtn = FAILED;
2469                                         break;
2470                                 }
2471                                 goto polling_hbc_ccb_retry;
2472                         }
2473                 }
2474                 flag_ccb = readl(&reg->outbound_queueport_low);
2475                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2476                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2477                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2478                 poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2479                 /* check ifcommand done with no error*/
2480                 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2481                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2482                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2483                                         " poll command abort successfully \n"
2484                                         , acb->host->host_no
2485                                         , pCCB->pcmd->device->id
2486                                         , pCCB->pcmd->device->lun
2487                                         , pCCB);
2488                                         pCCB->pcmd->result = DID_ABORT << 16;
2489                                         arcmsr_ccb_complete(pCCB);
2490                                 continue;
2491                         }
2492                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2493                                 " command done ccb = '0x%p'"
2494                                 "ccboutstandingcount = %d \n"
2495                                 , acb->host->host_no
2496                                 , pCCB
2497                                 , atomic_read(&acb->ccboutstandingcount));
2498                         continue;
2499                 }
2500                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2501                 arcmsr_report_ccb_state(acb, pCCB, error);
2502         }
2503         return rtn;
2504 }
2505 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2506                                         struct CommandControlBlock *poll_ccb)
2507 {
2508         int rtn = 0;
2509         switch (acb->adapter_type) {
2510
2511         case ACB_ADAPTER_TYPE_A: {
2512                 rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2513                 }
2514                 break;
2515
2516         case ACB_ADAPTER_TYPE_B: {
2517                 rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2518                 }
2519                 break;
2520         case ACB_ADAPTER_TYPE_C: {
2521                 rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2522                 }
2523         }
2524         return rtn;
2525 }
2526
2527 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2528 {
2529         uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2530         dma_addr_t dma_coherent_handle;
2531         /*
2532         ********************************************************************
2533         ** here we need to tell iop 331 our freeccb.HighPart
2534         ** if freeccb.HighPart is not zero
2535         ********************************************************************
2536         */
2537         dma_coherent_handle = acb->dma_coherent_handle;
2538         cdb_phyaddr = (uint32_t)(dma_coherent_handle);
2539         cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
2540         acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2541         /*
2542         ***********************************************************************
2543         **    if adapter type B, set window of "post command Q"
2544         ***********************************************************************
2545         */
2546         switch (acb->adapter_type) {
2547
2548         case ACB_ADAPTER_TYPE_A: {
2549                 if (cdb_phyaddr_hi32 != 0) {
2550                         struct MessageUnit_A __iomem *reg = acb->pmuA;
2551                         uint32_t intmask_org;
2552                         intmask_org = arcmsr_disable_outbound_ints(acb);
2553                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2554                                                 &reg->message_rwbuffer[0]);
2555                         writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2556                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2557                                                         &reg->inbound_msgaddr0);
2558                         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2559                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2560                                 part physical address timeout\n",
2561                                 acb->host->host_no);
2562                                 return 1;
2563                         }
2564                         arcmsr_enable_outbound_ints(acb, intmask_org);
2565                 }
2566                 }
2567                 break;
2568
2569         case ACB_ADAPTER_TYPE_B: {
2570                 unsigned long post_queue_phyaddr;
2571                 uint32_t __iomem *rwbuffer;
2572
2573                 struct MessageUnit_B *reg = acb->pmuB;
2574                 uint32_t intmask_org;
2575                 intmask_org = arcmsr_disable_outbound_ints(acb);
2576                 reg->postq_index = 0;
2577                 reg->doneq_index = 0;
2578                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2579                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2580                         printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2581                                 acb->host->host_no);
2582                         return 1;
2583                 }
2584                 post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2585                 rwbuffer = reg->message_rwbuffer;
2586                 /* driver "set config" signature */
2587                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2588                 /* normal should be zero */
2589                 writel(cdb_phyaddr_hi32, rwbuffer++);
2590                 /* postQ size (256 + 8)*4        */
2591                 writel(post_queue_phyaddr, rwbuffer++);
2592                 /* doneQ size (256 + 8)*4        */
2593                 writel(post_queue_phyaddr + 1056, rwbuffer++);
2594                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
2595                 writel(1056, rwbuffer);
2596
2597                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2598                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2599                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2600                         timeout \n",acb->host->host_no);
2601                         return 1;
2602                 }
2603                 arcmsr_hbb_enable_driver_mode(acb);
2604                 arcmsr_enable_outbound_ints(acb, intmask_org);
2605                 }
2606                 break;
2607         case ACB_ADAPTER_TYPE_C: {
2608                 if (cdb_phyaddr_hi32 != 0) {
2609                         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2610
2611                         if (cdb_phyaddr_hi32 != 0) {
2612                                 unsigned char Retries = 0x00;
2613                                 do {
2614                                         printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x \n", acb->adapter_index, cdb_phyaddr_hi32);
2615                                 } while (Retries++ < 100);
2616                         }
2617                         writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2618                         writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2619                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2620                         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2621                         if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2622                                 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2623                                 timeout \n", acb->host->host_no);
2624                                 return 1;
2625                         }
2626                 }
2627                 }
2628         }
2629         return 0;
2630 }
2631
2632 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2633 {
2634         uint32_t firmware_state = 0;
2635         switch (acb->adapter_type) {
2636
2637         case ACB_ADAPTER_TYPE_A: {
2638                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2639                 do {
2640                         firmware_state = readl(&reg->outbound_msgaddr1);
2641                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2642                 }
2643                 break;
2644
2645         case ACB_ADAPTER_TYPE_B: {
2646                 struct MessageUnit_B *reg = acb->pmuB;
2647                 do {
2648                         firmware_state = readl(reg->iop2drv_doorbell);
2649                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2650                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2651                 }
2652                 break;
2653         case ACB_ADAPTER_TYPE_C: {
2654                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2655                 do {
2656                         firmware_state = readl(&reg->outbound_msgaddr1);
2657                 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2658                 }
2659         }
2660 }
2661
2662 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2663 {
2664         struct MessageUnit_A __iomem *reg = acb->pmuA;
2665         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2666                 return;
2667         } else {
2668                 acb->fw_flag = FW_NORMAL;
2669                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2670                         atomic_set(&acb->rq_map_token, 16);
2671                 }
2672                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2673                 if (atomic_dec_and_test(&acb->rq_map_token))
2674                         return;
2675                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2676                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2677         }
2678         return;
2679 }
2680
2681 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2682 {
2683         struct MessageUnit_B __iomem *reg = acb->pmuB;
2684         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2685                 return;
2686         } else {
2687                 acb->fw_flag = FW_NORMAL;
2688                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2689                         atomic_set(&acb->rq_map_token,16);
2690                 }
2691                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2692                 if(atomic_dec_and_test(&acb->rq_map_token))
2693                         return;
2694                 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2695                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2696         }
2697         return;
2698 }
2699
2700 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2701 {
2702         struct MessageUnit_C __iomem *reg = acb->pmuC;
2703         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
2704                 return;
2705         } else {
2706                 acb->fw_flag = FW_NORMAL;
2707                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2708                         atomic_set(&acb->rq_map_token, 16);
2709                 }
2710                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2711                 if (atomic_dec_and_test(&acb->rq_map_token))
2712                         return;
2713                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2714                 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2715                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2716         }
2717         return;
2718 }
2719
2720 static void arcmsr_request_device_map(unsigned long pacb)
2721 {
2722         struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2723         switch (acb->adapter_type) {
2724                 case ACB_ADAPTER_TYPE_A: {
2725                         arcmsr_request_hba_device_map(acb);
2726                 }
2727                 break;
2728                 case ACB_ADAPTER_TYPE_B: {
2729                         arcmsr_request_hbb_device_map(acb);
2730                 }
2731                 break;
2732                 case ACB_ADAPTER_TYPE_C: {
2733                         arcmsr_request_hbc_device_map(acb);
2734                 }
2735         }
2736 }
2737
2738 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2739 {
2740         struct MessageUnit_A __iomem *reg = acb->pmuA;
2741         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2742         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2743         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2744                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2745                                 rebulid' timeout \n", acb->host->host_no);
2746         }
2747 }
2748
2749 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2750 {
2751         struct MessageUnit_B *reg = acb->pmuB;
2752         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2753         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2754         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2755                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2756                                 rebulid' timeout \n",acb->host->host_no);
2757         }
2758 }
2759
2760 static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2761 {
2762         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2763         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2764         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2765         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2766         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2767                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2768                                 rebulid' timeout \n", pACB->host->host_no);
2769         }
2770         return;
2771 }
2772 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2773 {
2774         switch (acb->adapter_type) {
2775         case ACB_ADAPTER_TYPE_A:
2776                 arcmsr_start_hba_bgrb(acb);
2777                 break;
2778         case ACB_ADAPTER_TYPE_B:
2779                 arcmsr_start_hbb_bgrb(acb);
2780                 break;
2781         case ACB_ADAPTER_TYPE_C:
2782                 arcmsr_start_hbc_bgrb(acb);
2783         }
2784 }
2785
2786 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2787 {
2788         switch (acb->adapter_type) {
2789         case ACB_ADAPTER_TYPE_A: {
2790                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2791                 uint32_t outbound_doorbell;
2792                 /* empty doorbell Qbuffer if door bell ringed */
2793                 outbound_doorbell = readl(&reg->outbound_doorbell);
2794                 /*clear doorbell interrupt */
2795                 writel(outbound_doorbell, &reg->outbound_doorbell);
2796                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2797                 }
2798                 break;
2799
2800         case ACB_ADAPTER_TYPE_B: {
2801                 struct MessageUnit_B *reg = acb->pmuB;
2802                 /*clear interrupt and message state*/
2803                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2804                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2805                 /* let IOP know data has been read */
2806                 }
2807                 break;
2808         case ACB_ADAPTER_TYPE_C: {
2809                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2810                 uint32_t outbound_doorbell;
2811                 /* empty doorbell Qbuffer if door bell ringed */
2812                 outbound_doorbell = readl(&reg->outbound_doorbell);
2813                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2814                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2815                 }
2816         }
2817 }
2818
2819 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2820 {
2821         switch (acb->adapter_type) {
2822         case ACB_ADAPTER_TYPE_A:
2823                 return;
2824         case ACB_ADAPTER_TYPE_B:
2825                 {
2826                         struct MessageUnit_B *reg = acb->pmuB;
2827                         writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2828                         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2829                                 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2830                                 return;
2831                         }
2832                 }
2833                 break;
2834         case ACB_ADAPTER_TYPE_C:
2835                 return;
2836         }
2837         return;
2838 }
2839
2840 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2841 {
2842         uint8_t value[64];
2843         int i, count = 0;
2844         struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2845         struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2846         u32 temp = 0;
2847         /* backup pci config data */
2848         printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2849         for (i = 0; i < 64; i++) {
2850                 pci_read_config_byte(acb->pdev, i, &value[i]);
2851         }
2852         /* hardware reset signal */
2853         if ((acb->dev_id == 0x1680)) {
2854                 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2855         } else if ((acb->dev_id == 0x1880)) {
2856                 do {
2857                         count++;
2858                         writel(0xF, &pmuC->write_sequence);
2859                         writel(0x4, &pmuC->write_sequence);
2860                         writel(0xB, &pmuC->write_sequence);
2861                         writel(0x2, &pmuC->write_sequence);
2862                         writel(0x7, &pmuC->write_sequence);
2863                         writel(0xD, &pmuC->write_sequence);
2864                 } while ((((temp = readl(&pmuC->host_diagnostic)) | ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2865                 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2866         } else {
2867                 pci_write_config_byte(acb->pdev, 0x84, 0x20);
2868         }
2869         msleep(2000);
2870         /* write back pci config data */
2871         for (i = 0; i < 64; i++) {
2872                 pci_write_config_byte(acb->pdev, i, value[i]);
2873         }
2874         msleep(1000);
2875         return;
2876 }
2877 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2878 {
2879         uint32_t intmask_org;
2880         /* disable all outbound interrupt */
2881         intmask_org = arcmsr_disable_outbound_ints(acb);
2882         arcmsr_wait_firmware_ready(acb);
2883         arcmsr_iop_confirm(acb);
2884         /*start background rebuild*/
2885         arcmsr_start_adapter_bgrb(acb);
2886         /* empty doorbell Qbuffer if door bell ringed */
2887         arcmsr_clear_doorbell_queue_buffer(acb);
2888         arcmsr_enable_eoi_mode(acb);
2889         /* enable outbound Post Queue,outbound doorbell Interrupt */
2890         arcmsr_enable_outbound_ints(acb, intmask_org);
2891         acb->acb_flags |= ACB_F_IOP_INITED;
2892 }
2893
2894 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2895 {
2896         struct CommandControlBlock *ccb;
2897         uint32_t intmask_org;
2898         uint8_t rtnval = 0x00;
2899         int i = 0;
2900         if (atomic_read(&acb->ccboutstandingcount) != 0) {
2901                 /* disable all outbound interrupt */
2902                 intmask_org = arcmsr_disable_outbound_ints(acb);
2903                 /* talk to iop 331 outstanding command aborted */
2904                 rtnval = arcmsr_abort_allcmd(acb);
2905                 /* clear all outbound posted Q */
2906                 arcmsr_done4abort_postqueue(acb);
2907                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2908                         ccb = acb->pccb_pool[i];
2909                         if (ccb->startdone == ARCMSR_CCB_START) {
2910                                 arcmsr_ccb_complete(ccb);
2911                         }
2912                 }
2913                 atomic_set(&acb->ccboutstandingcount, 0);
2914                 /* enable all outbound interrupt */
2915                 arcmsr_enable_outbound_ints(acb, intmask_org);
2916                 return rtnval;
2917         }
2918         return rtnval;
2919 }
2920
2921 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2922 {
2923         struct AdapterControlBlock *acb =
2924                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2925         uint32_t intmask_org, outbound_doorbell;
2926         int retry_count = 0;
2927         int rtn = FAILED;
2928         acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2929         printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2930         acb->num_resets++;
2931
2932         switch(acb->adapter_type){
2933                 case ACB_ADAPTER_TYPE_A:{
2934                         if (acb->acb_flags & ACB_F_BUS_RESET){
2935                                 long timeout;
2936                                 printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
2937                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2938                                 if (timeout) {
2939                                         return SUCCESS;
2940                                 }
2941                         }
2942                         acb->acb_flags |= ACB_F_BUS_RESET;
2943                         if (!arcmsr_iop_reset(acb)) {
2944                                 struct MessageUnit_A __iomem *reg;
2945                                 reg = acb->pmuA;
2946                                 arcmsr_hardware_reset(acb);
2947                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
2948 sleep_again:
2949                                 arcmsr_sleep_for_bus_reset(cmd);
2950                                 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2951                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
2952                                         if (retry_count > retrycount) {
2953                                                 acb->fw_flag = FW_DEADLOCK;
2954                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
2955                                                 return FAILED;
2956                                         }
2957                                         retry_count++;
2958                                         goto sleep_again;
2959                                 }
2960                                 acb->acb_flags |= ACB_F_IOP_INITED;
2961                                 /* disable all outbound interrupt */
2962                                 intmask_org = arcmsr_disable_outbound_ints(acb);
2963                                 arcmsr_get_firmware_spec(acb);
2964                                 arcmsr_start_adapter_bgrb(acb);
2965                                 /* clear Qbuffer if door bell ringed */
2966                                 outbound_doorbell = readl(&reg->outbound_doorbell);
2967                                 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2968                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2969                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
2970                                 arcmsr_enable_outbound_ints(acb, intmask_org);
2971                                 atomic_set(&acb->rq_map_token, 16);
2972                                 atomic_set(&acb->ante_token_value, 16);
2973                                 acb->fw_flag = FW_NORMAL;
2974                                 init_timer(&acb->eternal_timer);
2975                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
2976                                 acb->eternal_timer.data = (unsigned long) acb;
2977                                 acb->eternal_timer.function = &arcmsr_request_device_map;
2978                                 add_timer(&acb->eternal_timer);
2979                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2980                                 rtn = SUCCESS;
2981                                 printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
2982                         } else {
2983                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2984                                 if (atomic_read(&acb->rq_map_token) == 0) {
2985                                         atomic_set(&acb->rq_map_token, 16);
2986                                         atomic_set(&acb->ante_token_value, 16);
2987                                         acb->fw_flag = FW_NORMAL;
2988                                         init_timer(&acb->eternal_timer);
2989                                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
2990                                         acb->eternal_timer.data = (unsigned long) acb;
2991                                         acb->eternal_timer.function = &arcmsr_request_device_map;
2992                                         add_timer(&acb->eternal_timer);
2993                                 } else {
2994                                         atomic_set(&acb->rq_map_token, 16);
2995                                         atomic_set(&acb->ante_token_value, 16);
2996                                         acb->fw_flag = FW_NORMAL;
2997                                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2998                                 }
2999                                 rtn = SUCCESS;
3000                         }
3001                         break;
3002                 }
3003                 case ACB_ADAPTER_TYPE_B:{
3004                         acb->acb_flags |= ACB_F_BUS_RESET;
3005                         if (!arcmsr_iop_reset(acb)) {
3006                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3007                                 rtn = FAILED;
3008                         } else {
3009                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3010                                 if (atomic_read(&acb->rq_map_token) == 0) {
3011                                         atomic_set(&acb->rq_map_token, 16);
3012                                         atomic_set(&acb->ante_token_value, 16);
3013                                         acb->fw_flag = FW_NORMAL;
3014                                         init_timer(&acb->eternal_timer);
3015                                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
3016                                         acb->eternal_timer.data = (unsigned long) acb;
3017                                         acb->eternal_timer.function = &arcmsr_request_device_map;
3018                                         add_timer(&acb->eternal_timer);
3019                                 } else {
3020                                         atomic_set(&acb->rq_map_token, 16);
3021                                         atomic_set(&acb->ante_token_value, 16);
3022                                         acb->fw_flag = FW_NORMAL;
3023                                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3024                                 }
3025                                 rtn = SUCCESS;
3026                         }
3027                         break;
3028                 }
3029                 case ACB_ADAPTER_TYPE_C:{
3030                         if (acb->acb_flags & ACB_F_BUS_RESET) {
3031                                 long timeout;
3032                                 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
3033                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3034                                 if (timeout) {
3035                                         return SUCCESS;
3036                                 }
3037                         }
3038                         acb->acb_flags |= ACB_F_BUS_RESET;
3039                         if (!arcmsr_iop_reset(acb)) {
3040                                 struct MessageUnit_C __iomem *reg;
3041                                 reg = acb->pmuC;
3042                                 arcmsr_hardware_reset(acb);
3043                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3044 sleep:
3045                                 arcmsr_sleep_for_bus_reset(cmd);
3046                                 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3047                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
3048                                         if (retry_count > retrycount) {
3049                                                 acb->fw_flag = FW_DEADLOCK;
3050                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
3051                                                 return FAILED;
3052                                         }
3053                                         retry_count++;
3054                                         goto sleep;
3055                                 }
3056                                 acb->acb_flags |= ACB_F_IOP_INITED;
3057                                 /* disable all outbound interrupt */
3058                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3059                                 arcmsr_get_firmware_spec(acb);
3060                                 arcmsr_start_adapter_bgrb(acb);
3061                                 /* clear Qbuffer if door bell ringed */
3062                                 outbound_doorbell = readl(&reg->outbound_doorbell);
3063                                 writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3064                                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3065                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3066                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3067                                 atomic_set(&acb->rq_map_token, 16);
3068                                 atomic_set(&acb->ante_token_value, 16);
3069                                 acb->fw_flag = FW_NORMAL;
3070                                 init_timer(&acb->eternal_timer);
3071                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
3072                                 acb->eternal_timer.data = (unsigned long) acb;
3073                                 acb->eternal_timer.function = &arcmsr_request_device_map;
3074                                 add_timer(&acb->eternal_timer);
3075                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3076                                 rtn = SUCCESS;
3077                                 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3078                         } else {
3079                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3080                                 if (atomic_read(&acb->rq_map_token) == 0) {
3081                                         atomic_set(&acb->rq_map_token, 16);
3082                                         atomic_set(&acb->ante_token_value, 16);
3083                                         acb->fw_flag = FW_NORMAL;
3084                                         init_timer(&acb->eternal_timer);
3085                                                 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
3086                                         acb->eternal_timer.data = (unsigned long) acb;
3087                                         acb->eternal_timer.function = &arcmsr_request_device_map;
3088                                         add_timer(&acb->eternal_timer);
3089                                 } else {
3090                                         atomic_set(&acb->rq_map_token, 16);
3091                                         atomic_set(&acb->ante_token_value, 16);
3092                                         acb->fw_flag = FW_NORMAL;
3093                                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3094                                 }
3095                                 rtn = SUCCESS;
3096                         }
3097                         break;
3098                 }
3099         }
3100         return rtn;
3101 }
3102
3103 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3104                 struct CommandControlBlock *ccb)
3105 {
3106         int rtn;
3107         rtn = arcmsr_polling_ccbdone(acb, ccb);
3108         return rtn;
3109 }
3110
3111 static int arcmsr_abort(struct scsi_cmnd *cmd)
3112 {
3113         struct AdapterControlBlock *acb =
3114                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3115         int i = 0;
3116         int rtn = FAILED;
3117         printk(KERN_NOTICE
3118                 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3119                 acb->host->host_no, cmd->device->id, cmd->device->lun);
3120         acb->acb_flags |= ACB_F_ABORT;
3121         acb->num_aborts++;
3122         /*
3123         ************************************************
3124         ** the all interrupt service routine is locked
3125         ** we need to handle it as soon as possible and exit
3126         ************************************************
3127         */
3128         if (!atomic_read(&acb->ccboutstandingcount))
3129                 return rtn;
3130
3131         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3132                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3133                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3134                         ccb->startdone = ARCMSR_CCB_ABORTED;
3135                         rtn = arcmsr_abort_one_cmd(acb, ccb);
3136                         break;
3137                 }
3138         }
3139         acb->acb_flags &= ~ACB_F_ABORT;
3140         return rtn;
3141 }
3142
3143 static const char *arcmsr_info(struct Scsi_Host *host)
3144 {
3145         struct AdapterControlBlock *acb =
3146                 (struct AdapterControlBlock *) host->hostdata;
3147         static char buf[256];
3148         char *type;
3149         int raid6 = 1;
3150         switch (acb->pdev->device) {
3151         case PCI_DEVICE_ID_ARECA_1110:
3152         case PCI_DEVICE_ID_ARECA_1200:
3153         case PCI_DEVICE_ID_ARECA_1202:
3154         case PCI_DEVICE_ID_ARECA_1210:
3155                 raid6 = 0;
3156                 /*FALLTHRU*/
3157         case PCI_DEVICE_ID_ARECA_1120:
3158         case PCI_DEVICE_ID_ARECA_1130:
3159         case PCI_DEVICE_ID_ARECA_1160:
3160         case PCI_DEVICE_ID_ARECA_1170:
3161         case PCI_DEVICE_ID_ARECA_1201:
3162         case PCI_DEVICE_ID_ARECA_1220:
3163         case PCI_DEVICE_ID_ARECA_1230:
3164         case PCI_DEVICE_ID_ARECA_1260:
3165         case PCI_DEVICE_ID_ARECA_1270:
3166         case PCI_DEVICE_ID_ARECA_1280:
3167                 type = "SATA";
3168                 break;
3169         case PCI_DEVICE_ID_ARECA_1380:
3170         case PCI_DEVICE_ID_ARECA_1381:
3171         case PCI_DEVICE_ID_ARECA_1680:
3172         case PCI_DEVICE_ID_ARECA_1681:
3173         case PCI_DEVICE_ID_ARECA_1880:
3174                 type = "SAS";
3175                 break;
3176         default:
3177                 type = "X-TYPE";
3178                 break;
3179         }
3180         sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3181                         type, raid6 ? "( RAID6 capable)" : "",
3182                         ARCMSR_DRIVER_VERSION);
3183         return buf;
3184 }