drivers/scsi/arcmsr/arcmsr_hba.c

   1 /*
   2 *******************************************************************************
   3 **        O.S   : Linux
   4 **   FILE NAME  : arcmsr_hba.c
   5 **        BY    : Erich Chen
   6 **   Description: SCSI RAID Device Driver for
   7 **                ARECA RAID Host adapter
   8 *******************************************************************************
   9 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
  10 **
  11 **     Web site: www.areca.com.tw
  12 **       E-mail: support@areca.com.tw
  13 **
  14 ** This program is free software; you can redistribute it and/or modify
  15 ** it under the terms of the GNU General Public License version 2 as
  16 ** published by the Free Software Foundation.
  17 ** This program is distributed in the hope that it will be useful,
  18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ** GNU General Public License for more details.
  21 *******************************************************************************
  22 ** Redistribution and use in source and binary forms, with or without
  23 ** modification, are permitted provided that the following conditions
  24 ** are met:
  25 ** 1. Redistributions of source code must retain the above copyright
  26 **    notice, this list of conditions and the following disclaimer.
  27 ** 2. Redistributions in binary form must reproduce the above copyright
  28 **    notice, this list of conditions and the following disclaimer in the
  29 **    documentation and/or other materials provided with the distribution.
  30 ** 3. The name of the author may not be used to endorse or promote products
  31 **    derived from this software without specific prior written permission.
  32 **
  33 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  34 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  35 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  36 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  37 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
  38 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  39 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
  40 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  41 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
  42 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  43 *******************************************************************************
  44 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
  45 **     Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
  46 *******************************************************************************
  47 */
  48 #include <linux/module.h>
  49 #include <linux/reboot.h>
  50 #include <linux/spinlock.h>
  51 #include <linux/pci_ids.h>
  52 #include <linux/interrupt.h>
  53 #include <linux/moduleparam.h>
  54 #include <linux/errno.h>
  55 #include <linux/types.h>
  56 #include <linux/delay.h>
  57 #include <linux/dma-mapping.h>
  58 #include <linux/timer.h>
  59 #include <linux/slab.h>
  60 #include <linux/pci.h>
  61 #include <linux/aer.h>
  62 #include <asm/dma.h>
  63 #include <asm/io.h>
  64 #include <asm/system.h>
  65 #include <asm/uaccess.h>
  66 #include <scsi/scsi_host.h>
  67 #include <scsi/scsi.h>
  68 #include <scsi/scsi_cmnd.h>
  69 #include <scsi/scsi_tcq.h>
  70 #include <scsi/scsi_device.h>
  71 #include <scsi/scsi_transport.h>
  72 #include <scsi/scsicam.h>
  73 #include "arcmsr.h"
  74 MODULE_AUTHOR("Nick Cheng <support@areca.com.tw>");
  75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx/1880) SATA/SAS RAID Host Bus Adapter");
  76 MODULE_LICENSE("Dual BSD/GPL");
  77 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
  78 static int sleeptime = 10;
  79 static int retrycount = 30;
  80 wait_queue_head_t wait_q;
  81 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
  82                                         struct scsi_cmnd *cmd);
  83 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
  84 static int arcmsr_abort(struct scsi_cmnd *);
  85 static int arcmsr_bus_reset(struct scsi_cmnd *);
  86 static int arcmsr_bios_param(struct scsi_device *sdev,
  87                 struct block_device *bdev, sector_t capacity, int *info);
  88 static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
  89 static int arcmsr_probe(struct pci_dev *pdev,
  90                                 const struct pci_device_id *id);
  91 static void arcmsr_remove(struct pci_dev *pdev);
  92 static void arcmsr_shutdown(struct pci_dev *pdev);
  93 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  94 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  95 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
  96 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
  97 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
  98 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
  99 static void arcmsr_request_device_map(unsigned long pacb);
 100 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
 101 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
 102 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
 103 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
 104 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
 105 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
 106 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
 107 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
 108 static const char *arcmsr_info(struct Scsi_Host *);
 109 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 110 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
 111                                           int queue_depth, int reason)
 112 {
 113         if (reason != SCSI_QDEPTH_DEFAULT)
 114                 return -EOPNOTSUPP;
 115
 116         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 117                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 118         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 119         return queue_depth;
 120 }
 121
 122 static struct scsi_host_template arcmsr_scsi_host_template = {
 123         .module                 = THIS_MODULE,
 124         .name                   = "ARCMSR ARECA SATA/SAS RAID Controller"
 125                                 ARCMSR_DRIVER_VERSION,
 126         .info                   = arcmsr_info,
 127         .queuecommand           = arcmsr_queue_command,
 128         .eh_abort_handler               = arcmsr_abort,
 129         .eh_bus_reset_handler   = arcmsr_bus_reset,
 130         .bios_param             = arcmsr_bios_param,
 131         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 132         .can_queue              = ARCMSR_MAX_FREECCB_NUM,
 133         .this_id                        = ARCMSR_SCSI_INITIATOR_ID,
 134         .sg_tablesize                   = ARCMSR_DEFAULT_SG_ENTRIES,
 135         .max_sectors                    = ARCMSR_MAX_XFER_SECTORS_C,
 136         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 137         .use_clustering         = ENABLE_CLUSTERING,
 138         .shost_attrs            = arcmsr_host_attrs,
 139 };
 140 static struct pci_device_id arcmsr_device_id_table[] = {
 141         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 142         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 143         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 144         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 145         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
 146         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
 147         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
 148         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
 149         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 150         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 151         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
 152         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
 153         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
 154         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
 155         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
 156         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
 157         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
 158         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
 159         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)},
 160         {0, 0}, /* Terminating entry */
 161 };
 162 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 163 static struct pci_driver arcmsr_pci_driver = {
 164         .name                   = "arcmsr",
 165         .id_table                       = arcmsr_device_id_table,
 166         .probe                  = arcmsr_probe,
 167         .remove                 = arcmsr_remove,
 168         .shutdown               = arcmsr_shutdown,
 169 };
 170 /*
 171 ****************************************************************************
 172 ****************************************************************************
 173 */
 174 int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd)
 175 {
 176                 struct Scsi_Host *shost = NULL;
 177                 int i, isleep;
 178                 shost = cmd->device->host;
 179                 isleep = sleeptime / 10;
 180                 if (isleep > 0) {
 181                         for (i = 0; i < isleep; i++) {
 182                                 msleep(10000);
 183                         }
 184                 }
 185
 186                 isleep = sleeptime % 10;
 187                 if (isleep > 0) {
 188                         msleep(isleep*1000);
 189                 }
 190                 printk(KERN_NOTICE "wake-up\n");
 191                 return 0;
 192 }
 193
 194 static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
 195 {
 196         switch (acb->adapter_type) {
 197         case ACB_ADAPTER_TYPE_A:
 198         case ACB_ADAPTER_TYPE_C:
 199                 break;
 200         case ACB_ADAPTER_TYPE_B:{
 201                 dma_free_coherent(&acb->pdev->dev,
 202                         sizeof(struct MessageUnit_B),
 203                         acb->pmuB, acb->dma_coherent_handle_hbb_mu);
 204         }
 205         }
 206 }
 207
 208 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 209 {
 210         struct pci_dev *pdev = acb->pdev;
 211         switch (acb->adapter_type){
 212         case ACB_ADAPTER_TYPE_A:{
 213                 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 214                 if (!acb->pmuA) {
 215                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 216                         return false;
 217                 }
 218                 break;
 219         }
 220         case ACB_ADAPTER_TYPE_B:{
 221                 void __iomem *mem_base0, *mem_base1;
 222                 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 223                 if (!mem_base0) {
 224                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 225                         return false;
 226                 }
 227                 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 228                 if (!mem_base1) {
 229                         iounmap(mem_base0);
 230                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 231                         return false;
 232                 }
 233                 acb->mem_base0 = mem_base0;
 234                 acb->mem_base1 = mem_base1;
 235                 break;
 236         }
 237         case ACB_ADAPTER_TYPE_C:{
 238                 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 239                 if (!acb->pmuC) {
 240                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 241                         return false;
 242                 }
 243                 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 244                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 245                         return true;
 246                 }
 247                 break;
 248         }
 249         }
 250         return true;
 251 }
 252
 253 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 254 {
 255         switch (acb->adapter_type) {
 256         case ACB_ADAPTER_TYPE_A:{
 257                 iounmap(acb->pmuA);
 258         }
 259         break;
 260         case ACB_ADAPTER_TYPE_B:{
 261                 iounmap(acb->mem_base0);
 262                 iounmap(acb->mem_base1);
 263         }
 264
 265         break;
 266         case ACB_ADAPTER_TYPE_C:{
 267                 iounmap(acb->pmuC);
 268         }
 269         }
 270 }
 271
 272 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 273 {
 274         irqreturn_t handle_state;
 275         struct AdapterControlBlock *acb = dev_id;
 276
 277         handle_state = arcmsr_interrupt(acb);
 278         return handle_state;
 279 }
 280
 281 static int arcmsr_bios_param(struct scsi_device *sdev,
 282                 struct block_device *bdev, sector_t capacity, int *geom)
 283 {
 284         int ret, heads, sectors, cylinders, total_capacity;
 285         unsigned char *buffer;/* return copy of block device's partition table */
 286
 287         buffer = scsi_bios_ptable(bdev);
 288         if (buffer) {
 289                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 290                 kfree(buffer);
 291                 if (ret != -1)
 292                         return ret;
 293         }
 294         total_capacity = capacity;
 295         heads = 64;
 296         sectors = 32;
 297         cylinders = total_capacity / (heads * sectors);
 298         if (cylinders > 1024) {
 299                 heads = 255;
 300                 sectors = 63;
 301                 cylinders = total_capacity / (heads * sectors);
 302         }
 303         geom[0] = heads;
 304         geom[1] = sectors;
 305         geom[2] = cylinders;
 306         return 0;
 307 }
 308
 309 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 310 {
 311         struct pci_dev *pdev = acb->pdev;
 312         u16 dev_id;
 313         pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 314         acb->dev_id = dev_id;
 315         switch (dev_id) {
 316         case 0x1880: {
 317                 acb->adapter_type = ACB_ADAPTER_TYPE_C;
 318                 }
 319                 break;
 320         case 0x1201: {
 321                 acb->adapter_type = ACB_ADAPTER_TYPE_B;
 322                 }
 323                 break;
 324
 325         default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
 326         }
 327 }
 328
 329 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 330 {
 331         struct MessageUnit_A __iomem *reg = acb->pmuA;
 332         uint32_t Index;
 333         uint8_t Retries = 0x00;
 334         do {
 335                 for (Index = 0; Index < 100; Index++) {
 336                         if (readl(&reg->outbound_intstatus) &
 337                                         ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 338                                 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 339                                         &reg->outbound_intstatus);
 340                                 return true;
 341                         }
 342                         msleep(10);
 343                 }/*max 1 seconds*/
 344
 345         } while (Retries++ < 20);/*max 20 sec*/
 346         return false;
 347 }
 348
 349 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
 350 {
 351         struct MessageUnit_B *reg = acb->pmuB;
 352         uint32_t Index;
 353         uint8_t Retries = 0x00;
 354         do {
 355                 for (Index = 0; Index < 100; Index++) {
 356                         if (readl(reg->iop2drv_doorbell)
 357                                 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 358                                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
 359                                         , reg->iop2drv_doorbell);
 360                                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
 361                                 return true;
 362                         }
 363                         msleep(10);
 364                 }/*max 1 seconds*/
 365
 366         } while (Retries++ < 20);/*max 20 sec*/
 367         return false;
 368 }
 369
 370 static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
 371 {
 372         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
 373         unsigned char Retries = 0x00;
 374         uint32_t Index;
 375         do {
 376                 for (Index = 0; Index < 100; Index++) {
 377                         if (readl(&phbcmu->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 378                                 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &phbcmu->outbound_doorbell_clear);/*clear interrupt*/
 379                                 return true;
 380                         }
 381                         /* one us delay */
 382                         msleep(10);
 383                 } /*max 1 seconds*/
 384         } while (Retries++ < 20); /*max 20 sec*/
 385         return false;
 386 }
 387 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 388 {
 389         struct MessageUnit_A __iomem *reg = acb->pmuA;
 390         int retry_count = 30;
 391         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 392         do {
 393                 if (arcmsr_hba_wait_msgint_ready(acb))
 394                         break;
 395                 else {
 396                         retry_count--;
 397                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 398                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 399                 }
 400         } while (retry_count != 0);
 401 }
 402
 403 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
 404 {
 405         struct MessageUnit_B *reg = acb->pmuB;
 406         int retry_count = 30;
 407         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 408         do {
 409                 if (arcmsr_hbb_wait_msgint_ready(acb))
 410                         break;
 411                 else {
 412                         retry_count--;
 413                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 414                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 415                 }
 416         } while (retry_count != 0);
 417 }
 418
 419 static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
 420 {
 421         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 422         int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 423         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 424         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 425         do {
 426                 if (arcmsr_hbc_wait_msgint_ready(pACB)) {
 427                         break;
 428                 } else {
 429                         retry_count--;
 430                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 431                         timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 432                 }
 433         } while (retry_count != 0);
 434         return;
 435 }
 436 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 437 {
 438         switch (acb->adapter_type) {
 439
 440         case ACB_ADAPTER_TYPE_A: {
 441                 arcmsr_flush_hba_cache(acb);
 442                 }
 443                 break;
 444
 445         case ACB_ADAPTER_TYPE_B: {
 446                 arcmsr_flush_hbb_cache(acb);
 447                 }
 448                 break;
 449         case ACB_ADAPTER_TYPE_C: {
 450                 arcmsr_flush_hbc_cache(acb);
 451                 }
 452         }
 453 }
 454
 455 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 456 {
 457         struct pci_dev *pdev = acb->pdev;
 458         void *dma_coherent;
 459         dma_addr_t dma_coherent_handle;
 460         struct CommandControlBlock *ccb_tmp;
 461         int i = 0, j = 0;
 462         dma_addr_t cdb_phyaddr;
 463         unsigned long roundup_ccbsize = 0, offset;
 464         unsigned long max_xfer_len;
 465         unsigned long max_sg_entrys;
 466         uint32_t  firm_config_version;
 467         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 468                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 469                         acb->devstate[i][j] = ARECA_RAID_GONE;
 470
 471         max_xfer_len = ARCMSR_MAX_XFER_LEN;
 472         max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 473         firm_config_version = acb->firm_cfg_version;
 474         if((firm_config_version & 0xFF) >= 3){
 475                 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 476                 max_sg_entrys = (max_xfer_len/4096);
 477         }
 478         acb->host->max_sectors = max_xfer_len/512;
 479         acb->host->sg_tablesize = max_sg_entrys;
 480         roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 481         acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM + 32;
 482         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 483         if(!dma_coherent){
 484                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no);
 485                 return -ENOMEM;
 486         }
 487         acb->dma_coherent = dma_coherent;
 488         acb->dma_coherent_handle = dma_coherent_handle;
 489         memset(dma_coherent, 0, acb->uncache_size);
 490         offset = roundup((unsigned long)dma_coherent, 32) - (unsigned long)dma_coherent;
 491         dma_coherent_handle = dma_coherent_handle + offset;
 492         dma_coherent = (struct CommandControlBlock *)dma_coherent + offset;
 493         ccb_tmp = dma_coherent;
 494         acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 495         for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 496                 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 497                 ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
 498                 acb->pccb_pool[i] = ccb_tmp;
 499                 ccb_tmp->acb = acb;
 500                 INIT_LIST_HEAD(&ccb_tmp->list);
 501                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 502                 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 503                 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 504         }
 505         return 0;
 506 }
 507
 508 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
 509 {
 510         struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 511         switch (acb->adapter_type) {
 512                 case ACB_ADAPTER_TYPE_A: {
 513
 514                         struct MessageUnit_A __iomem *reg  = acb->pmuA;
 515                         char *acb_dev_map = (char *)acb->device_map;
 516                         uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
 517                         char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
 518                         int target, lun;
 519                         struct scsi_device *psdev;
 520                         char diff;
 521
 522                         atomic_inc(&acb->rq_map_token);
 523                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 524                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 525                                         diff = (*acb_dev_map)^readb(devicemap);
 526                                         if (diff != 0) {
 527                                                 char temp;
 528                                                 *acb_dev_map = readb(devicemap);
 529                                                 temp =*acb_dev_map;
 530                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 531                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 532                                                                 scsi_add_device(acb->host, 0, target, lun);
 533                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 534                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 535                                                                 if (psdev != NULL ) {
 536                                                                         scsi_remove_device(psdev);
 537                                                                         scsi_device_put(psdev);
 538                                                                 }
 539                                                         }
 540                                                         temp >>= 1;
 541                                                         diff >>= 1;
 542                                                 }
 543                                         }
 544                                         devicemap++;
 545                                         acb_dev_map++;
 546                                 }
 547                         }
 548                         break;
 549                 }
 550
 551                 case ACB_ADAPTER_TYPE_B: {
 552                         struct MessageUnit_B *reg  = acb->pmuB;
 553                         char *acb_dev_map = (char *)acb->device_map;
 554                         uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
 555                         char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
 556                         int target, lun;
 557                         struct scsi_device *psdev;
 558                         char diff;
 559
 560                         atomic_inc(&acb->rq_map_token);
 561                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 562                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 563                                         diff = (*acb_dev_map)^readb(devicemap);
 564                                         if (diff != 0) {
 565                                                 char temp;
 566                                                 *acb_dev_map = readb(devicemap);
 567                                                 temp =*acb_dev_map;
 568                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 569                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 570                                                                 scsi_add_device(acb->host, 0, target, lun);
 571                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 572                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 573                                                                 if (psdev != NULL ) {
 574                                                                         scsi_remove_device(psdev);
 575                                                                         scsi_device_put(psdev);
 576                                                                 }
 577                                                         }
 578                                                         temp >>= 1;
 579                                                         diff >>= 1;
 580                                                 }
 581                                         }
 582                                         devicemap++;
 583                                         acb_dev_map++;
 584                                 }
 585                         }
 586                 }
 587                 break;
 588                 case ACB_ADAPTER_TYPE_C: {
 589                         struct MessageUnit_C *reg  = acb->pmuC;
 590                         char *acb_dev_map = (char *)acb->device_map;
 591                         uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 592                         char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 593                         int target, lun;
 594                         struct scsi_device *psdev;
 595                         char diff;
 596
 597                         atomic_inc(&acb->rq_map_token);
 598                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 599                                 for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
 600                                         diff = (*acb_dev_map)^readb(devicemap);
 601                                         if (diff != 0) {
 602                                                 char temp;
 603                                                 *acb_dev_map = readb(devicemap);
 604                                                 temp = *acb_dev_map;
 605                                                 for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 606                                                         if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
 607                                                                 scsi_add_device(acb->host, 0, target, lun);
 608                                                         } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 609                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 610                                                                 if (psdev != NULL) {
 611                                                                         scsi_remove_device(psdev);
 612                                                                         scsi_device_put(psdev);
 613                                                                 }
 614                                                         }
 615                                                         temp >>= 1;
 616                                                         diff >>= 1;
 617                                                 }
 618                                         }
 619                                         devicemap++;
 620                                         acb_dev_map++;
 621                                 }
 622                         }
 623                 }
 624         }
 625 }
 626
 627 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 628 {
 629         struct Scsi_Host *host;
 630         struct AdapterControlBlock *acb;
 631         uint8_t bus,dev_fun;
 632         int error;
 633         error = pci_enable_device(pdev);
 634         if(error){
 635                 return -ENODEV;
 636         }
 637         host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 638         if(!host){
 639                 goto pci_disable_dev;
 640         }
 641         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 642         if(error){
 643                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 644                 if(error){
 645                         printk(KERN_WARNING
 646                                "scsi%d: No suitable DMA mask available\n",
 647                                host->host_no);
 648                         goto scsi_host_release;
 649                 }
 650         }
 651         init_waitqueue_head(&wait_q);
 652         bus = pdev->bus->number;
 653         dev_fun = pdev->devfn;
 654         acb = (struct AdapterControlBlock *) host->hostdata;
 655         memset(acb,0,sizeof(struct AdapterControlBlock));
 656         acb->pdev = pdev;
 657         acb->host = host;
 658         host->max_lun = ARCMSR_MAX_TARGETLUN;
 659         host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 660         host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 661         host->can_queue = ARCMSR_MAX_FREECCB_NUM;       /* max simultaneous cmds */
 662         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 663         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 664         host->unique_id = (bus << 8) | dev_fun;
 665         pci_set_drvdata(pdev, host);
 666         pci_set_master(pdev);
 667         error = pci_request_regions(pdev, "arcmsr");
 668         if(error){
 669                 goto scsi_host_release;
 670         }
 671         spin_lock_init(&acb->eh_lock);
 672         spin_lock_init(&acb->ccblist_lock);
 673         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 674                         ACB_F_MESSAGE_RQBUFFER_CLEARED |
 675                         ACB_F_MESSAGE_WQBUFFER_READED);
 676         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 677         INIT_LIST_HEAD(&acb->ccb_free_list);
 678         arcmsr_define_adapter_type(acb);
 679         error = arcmsr_remap_pciregion(acb);
 680         if(!error){
 681                 goto pci_release_regs;
 682         }
 683         error = arcmsr_get_firmware_spec(acb);
 684         if(!error){
 685                 goto unmap_pci_region;
 686         }
 687         error = arcmsr_alloc_ccb_pool(acb);
 688         if(error){
 689                 goto free_hbb_mu;
 690         }
 691         arcmsr_iop_init(acb);
 692         error = scsi_add_host(host, &pdev->dev);
 693         if(error){
 694                 goto RAID_controller_stop;
 695         }
 696         error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
 697         if(error){
 698                 goto scsi_host_remove;
 699         }
 700         host->irq = pdev->irq;
 701         scsi_scan_host(host);
 702         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 703         atomic_set(&acb->rq_map_token, 16);
 704         atomic_set(&acb->ante_token_value, 16);
 705         acb->fw_flag = FW_NORMAL;
 706         init_timer(&acb->eternal_timer);
 707         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 708         acb->eternal_timer.data = (unsigned long) acb;
 709         acb->eternal_timer.function = &arcmsr_request_device_map;
 710         add_timer(&acb->eternal_timer);
 711         if(arcmsr_alloc_sysfs_attr(acb))
 712                 goto out_free_sysfs;
 713         return 0;
 714 out_free_sysfs:
 715 scsi_host_remove:
 716         scsi_remove_host(host);
 717 RAID_controller_stop:
 718         arcmsr_stop_adapter_bgrb(acb);
 719         arcmsr_flush_adapter_cache(acb);
 720         arcmsr_free_ccb_pool(acb);
 721 free_hbb_mu:
 722         arcmsr_free_hbb_mu(acb);
 723 unmap_pci_region:
 724         arcmsr_unmap_pciregion(acb);
 725 pci_release_regs:
 726         pci_release_regions(pdev);
 727 scsi_host_release:
 728         scsi_host_put(host);
 729 pci_disable_dev:
 730         pci_disable_device(pdev);
 731         return -ENODEV;
 732 }
 733
 734 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 735 {
 736         struct MessageUnit_A __iomem *reg = acb->pmuA;
 737         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 738         if (!arcmsr_hba_wait_msgint_ready(acb)) {
 739                 printk(KERN_NOTICE
 740                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 741                         , acb->host->host_no);
 742                 return false;
 743         }
 744         return true;
 745 }
 746
 747 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 748 {
 749         struct MessageUnit_B *reg = acb->pmuB;
 750
 751         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 752         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 753                 printk(KERN_NOTICE
 754                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 755                         , acb->host->host_no);
 756                 return false;
 757         }
 758         return true;
 759 }
 760 static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
 761 {
 762         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 763         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 764         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 765         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
 766                 printk(KERN_NOTICE
 767                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 768                         , pACB->host->host_no);
 769                 return false;
 770         }
 771         return true;
 772 }
 773 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 774 {
 775         uint8_t rtnval = 0;
 776         switch (acb->adapter_type) {
 777         case ACB_ADAPTER_TYPE_A: {
 778                 rtnval = arcmsr_abort_hba_allcmd(acb);
 779                 }
 780                 break;
 781
 782         case ACB_ADAPTER_TYPE_B: {
 783                 rtnval = arcmsr_abort_hbb_allcmd(acb);
 784                 }
 785                 break;
 786
 787         case ACB_ADAPTER_TYPE_C: {
 788                 rtnval = arcmsr_abort_hbc_allcmd(acb);
 789                 }
 790         }
 791         return rtnval;
 792 }
 793
 794 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
 795 {
 796         struct MessageUnit_B *reg = pacb->pmuB;
 797         writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
 798         if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
 799                 printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
 800                 return false;
 801         }
 802         return true;
 803 }
 804
 805 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 806 {
 807         struct scsi_cmnd *pcmd = ccb->pcmd;
 808
 809         scsi_dma_unmap(pcmd);
 810 }
 811
 812 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 813 {
 814         struct AdapterControlBlock *acb = ccb->acb;
 815         struct scsi_cmnd *pcmd = ccb->pcmd;
 816         unsigned long flags;
 817         atomic_dec(&acb->ccboutstandingcount);
 818         arcmsr_pci_unmap_dma(ccb);
 819         ccb->startdone = ARCMSR_CCB_DONE;
 820         spin_lock_irqsave(&acb->ccblist_lock, flags);
 821         list_add_tail(&ccb->list, &acb->ccb_free_list);
 822         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 823         pcmd->scsi_done(pcmd);
 824 }
 825
 826 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 827 {
 828
 829         struct scsi_cmnd *pcmd = ccb->pcmd;
 830         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 831         pcmd->result = DID_OK << 16;
 832         if (sensebuffer) {
 833                 int sense_data_length =
 834                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 835                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 836                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 837                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 838                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 839                 sensebuffer->Valid = 1;
 840         }
 841 }
 842
 843 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 844 {
 845         u32 orig_mask = 0;
 846         switch (acb->adapter_type) {
 847         case ACB_ADAPTER_TYPE_A : {
 848                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 849                 orig_mask = readl(&reg->outbound_intmask);
 850                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 851                                                 &reg->outbound_intmask);
 852                 }
 853                 break;
 854         case ACB_ADAPTER_TYPE_B : {
 855                 struct MessageUnit_B *reg = acb->pmuB;
 856                 orig_mask = readl(reg->iop2drv_doorbell_mask);
 857                 writel(0, reg->iop2drv_doorbell_mask);
 858                 }
 859                 break;
 860         case ACB_ADAPTER_TYPE_C:{
 861                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
 862                 /* disable all outbound interrupt */
 863                 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
 864                 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
 865                 }
 866                 break;
 867         }
 868         return orig_mask;
 869 }
 870
 871 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
 872                         struct CommandControlBlock *ccb, bool error)
 873 {
 874         uint8_t id, lun;
 875         id = ccb->pcmd->device->id;
 876         lun = ccb->pcmd->device->lun;
 877         if (!error) {
 878                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 879                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 880                 ccb->pcmd->result = DID_OK << 16;
 881                 arcmsr_ccb_complete(ccb);
 882         }else{
 883                 switch (ccb->arcmsr_cdb.DeviceStatus) {
 884                 case ARCMSR_DEV_SELECT_TIMEOUT: {
 885                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 886                         ccb->pcmd->result = DID_NO_CONNECT << 16;
 887                         arcmsr_ccb_complete(ccb);
 888                         }
 889                         break;
 890
 891                 case ARCMSR_DEV_ABORTED:
 892
 893                 case ARCMSR_DEV_INIT_FAIL: {
 894                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 895                         ccb->pcmd->result = DID_BAD_TARGET << 16;
 896                         arcmsr_ccb_complete(ccb);
 897                         }
 898                         break;
 899
 900                 case ARCMSR_DEV_CHECK_CONDITION: {
 901                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 902                         arcmsr_report_sense_info(ccb);
 903                         arcmsr_ccb_complete(ccb);
 904                         }
 905                         break;
 906
 907                 default:
 908                         printk(KERN_NOTICE
 909                                 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
 910                                 but got unknown DeviceStatus = 0x%x \n"
 911                                 , acb->host->host_no
 912                                 , id
 913                                 , lun
 914                                 , ccb->arcmsr_cdb.DeviceStatus);
 915                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 916                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
 917                                 arcmsr_ccb_complete(ccb);
 918                         break;
 919                 }
 920         }
 921 }
 922
 923 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
 924
 925 {
 926         int id, lun;
 927         if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
 928                 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
 929                         struct scsi_cmnd *abortcmd = pCCB->pcmd;
 930                         if (abortcmd) {
 931                                 id = abortcmd->device->id;
 932                                 lun = abortcmd->device->lun;
 933                                 abortcmd->result |= DID_ABORT << 16;
 934                                 arcmsr_ccb_complete(pCCB);
 935                                 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
 936                                 acb->host->host_no, pCCB);
 937                         }
 938                         return;
 939                 }
 940                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 941                                 done acb = '0x%p'"
 942                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
 943                                 " ccboutstandingcount = %d \n"
 944                                 , acb->host->host_no
 945                                 , acb
 946                                 , pCCB
 947                                 , pCCB->acb
 948                                 , pCCB->startdone
 949                                 , atomic_read(&acb->ccboutstandingcount));
 950                   return;
 951                 }
 952         arcmsr_report_ccb_state(acb, pCCB, error);
 953 }
 954
 955 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 956 {
 957         int i = 0;
 958         uint32_t flag_ccb;
 959         struct ARCMSR_CDB *pARCMSR_CDB;
 960         bool error;
 961         struct CommandControlBlock *pCCB;
 962         switch (acb->adapter_type) {
 963
 964         case ACB_ADAPTER_TYPE_A: {
 965                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 966                 uint32_t outbound_intstatus;
 967                 outbound_intstatus = readl(&reg->outbound_intstatus) &
 968                                         acb->outbound_int_enable;
 969                 /*clear and abort all outbound posted Q*/
 970                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
 971                 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 972                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 973                         pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
 974                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 975                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 976                         arcmsr_drain_donequeue(acb, pCCB, error);
 977                 }
 978                 }
 979                 break;
 980
 981         case ACB_ADAPTER_TYPE_B: {
 982                 struct MessageUnit_B *reg = acb->pmuB;
 983                 /*clear all outbound posted Q*/
 984                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, &reg->iop2drv_doorbell); /* clear doorbell interrupt */
 985                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 986                         if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 987                                 writel(0, &reg->done_qbuffer[i]);
 988                                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
 989                                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 990                                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 991                                 arcmsr_drain_donequeue(acb, pCCB, error);
 992                         }
 993                         reg->post_qbuffer[i] = 0;
 994                 }
 995                 reg->doneq_index = 0;
 996                 reg->postq_index = 0;
 997                 }
 998                 break;
 999         case ACB_ADAPTER_TYPE_C: {
1000                 struct MessageUnit_C *reg = acb->pmuC;
1001                 struct  ARCMSR_CDB *pARCMSR_CDB;
1002                 uint32_t flag_ccb, ccb_cdb_phy;
1003                 bool error;
1004                 struct CommandControlBlock *pCCB;
1005                 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1006                         /*need to do*/
1007                         flag_ccb = readl(&reg->outbound_queueport_low);
1008                         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1009                         pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
1010                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1011                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1012                         arcmsr_drain_donequeue(acb, pCCB, error);
1013                 }
1014         }
1015         }
1016 }
1017 static void arcmsr_remove(struct pci_dev *pdev)
1018 {
1019         struct Scsi_Host *host = pci_get_drvdata(pdev);
1020         struct AdapterControlBlock *acb =
1021                 (struct AdapterControlBlock *) host->hostdata;
1022         int poll_count = 0;
1023         arcmsr_free_sysfs_attr(acb);
1024         scsi_remove_host(host);
1025         flush_scheduled_work();
1026         del_timer_sync(&acb->eternal_timer);
1027         arcmsr_disable_outbound_ints(acb);
1028         arcmsr_stop_adapter_bgrb(acb);
1029         arcmsr_flush_adapter_cache(acb);
1030         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1031         acb->acb_flags &= ~ACB_F_IOP_INITED;
1032
1033         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1034                 if (!atomic_read(&acb->ccboutstandingcount))
1035                         break;
1036                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1037                 msleep(25);
1038         }
1039
1040         if (atomic_read(&acb->ccboutstandingcount)) {
1041                 int i;
1042
1043                 arcmsr_abort_allcmd(acb);
1044                 arcmsr_done4abort_postqueue(acb);
1045                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1046                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
1047                         if (ccb->startdone == ARCMSR_CCB_START) {
1048                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1049                                 ccb->pcmd->result = DID_ABORT << 16;
1050                                 arcmsr_ccb_complete(ccb);
1051                         }
1052                 }
1053         }
1054         free_irq(pdev->irq, acb);
1055         arcmsr_free_ccb_pool(acb);
1056         arcmsr_free_hbb_mu(acb);
1057         arcmsr_unmap_pciregion(acb);
1058         pci_release_regions(pdev);
1059         scsi_host_put(host);
1060         pci_disable_device(pdev);
1061         pci_set_drvdata(pdev, NULL);
1062 }
1063
1064 static void arcmsr_shutdown(struct pci_dev *pdev)
1065 {
1066         struct Scsi_Host *host = pci_get_drvdata(pdev);
1067         struct AdapterControlBlock *acb =
1068                 (struct AdapterControlBlock *)host->hostdata;
1069         del_timer_sync(&acb->eternal_timer);
1070         arcmsr_disable_outbound_ints(acb);
1071         flush_scheduled_work();
1072         arcmsr_stop_adapter_bgrb(acb);
1073         arcmsr_flush_adapter_cache(acb);
1074 }
1075
1076 static int arcmsr_module_init(void)
1077 {
1078         int error = 0;
1079         error = pci_register_driver(&arcmsr_pci_driver);
1080         return error;
1081 }
1082
1083 static void arcmsr_module_exit(void)
1084 {
1085         pci_unregister_driver(&arcmsr_pci_driver);
1086 }
1087 module_init(arcmsr_module_init);
1088 module_exit(arcmsr_module_exit);
1089
1090 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1091                                                 u32 intmask_org)
1092 {
1093         u32 mask;
1094         switch (acb->adapter_type) {
1095
1096         case ACB_ADAPTER_TYPE_A: {
1097                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1098                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1099                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1100                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1101                 writel(mask, &reg->outbound_intmask);
1102                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1103                 }
1104                 break;
1105
1106         case ACB_ADAPTER_TYPE_B: {
1107                 struct MessageUnit_B *reg = acb->pmuB;
1108                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1109                         ARCMSR_IOP2DRV_DATA_READ_OK |
1110                         ARCMSR_IOP2DRV_CDB_DONE |
1111                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1112                 writel(mask, reg->iop2drv_doorbell_mask);
1113                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1114                 }
1115                 break;
1116         case ACB_ADAPTER_TYPE_C: {
1117                 struct MessageUnit_C *reg = acb->pmuC;
1118                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1119                 writel(intmask_org & mask, &reg->host_int_mask);
1120                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1121                 }
1122         }
1123 }
1124
1125 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1126         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1127 {
1128         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1129         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1130         __le32 address_lo, address_hi;
1131         int arccdbsize = 0x30;
1132         __le32 length = 0;
1133         int i;
1134         struct scatterlist *sg;
1135         int nseg;
1136         ccb->pcmd = pcmd;
1137         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1138         arcmsr_cdb->TargetID = pcmd->device->id;
1139         arcmsr_cdb->LUN = pcmd->device->lun;
1140         arcmsr_cdb->Function = 1;
1141         arcmsr_cdb->Context = 0;
1142         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1143
1144         nseg = scsi_dma_map(pcmd);
1145         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1146                 return FAILED;
1147         scsi_for_each_sg(pcmd, sg, nseg, i) {
1148                 /* Get the physical address of the current data pointer */
1149                 length = cpu_to_le32(sg_dma_len(sg));
1150                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1151                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1152                 if (address_hi == 0) {
1153                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1154
1155                         pdma_sg->address = address_lo;
1156                         pdma_sg->length = length;
1157                         psge += sizeof (struct SG32ENTRY);
1158                         arccdbsize += sizeof (struct SG32ENTRY);
1159                 } else {
1160                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1161
1162                         pdma_sg->addresshigh = address_hi;
1163                         pdma_sg->address = address_lo;
1164                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1165                         psge += sizeof (struct SG64ENTRY);
1166                         arccdbsize += sizeof (struct SG64ENTRY);
1167                 }
1168         }
1169         arcmsr_cdb->sgcount = (uint8_t)nseg;
1170         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1171         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1172         if ( arccdbsize > 256)
1173                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1174         if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1175                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1176         ccb->arc_cdb_size = arccdbsize;
1177         return SUCCESS;
1178 }
1179
1180 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1181 {
1182         uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1183         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1184         atomic_inc(&acb->ccboutstandingcount);
1185         ccb->startdone = ARCMSR_CCB_START;
1186         switch (acb->adapter_type) {
1187         case ACB_ADAPTER_TYPE_A: {
1188                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1189
1190                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1191                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1192                         &reg->inbound_queueport);
1193                 else {
1194                                 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1195                 }
1196                 }
1197                 break;
1198
1199         case ACB_ADAPTER_TYPE_B: {
1200                 struct MessageUnit_B *reg = acb->pmuB;
1201                 uint32_t ending_index, index = reg->postq_index;
1202
1203                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1204                 writel(0, &reg->post_qbuffer[ending_index]);
1205                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1206                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1207                                                  &reg->post_qbuffer[index]);
1208                 } else {
1209                         writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1210                 }
1211                 index++;
1212                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1213                 reg->postq_index = index;
1214                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1215                 }
1216                 break;
1217         case ACB_ADAPTER_TYPE_C: {
1218                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1219                 uint32_t ccb_post_stamp, arc_cdb_size;
1220
1221                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1222                 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1223                 if (acb->cdb_phyaddr_hi32) {
1224                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1225                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1226                 } else {
1227                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1228                 }
1229                 }
1230         }
1231 }
1232
1233 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1234 {
1235         struct MessageUnit_A __iomem *reg = acb->pmuA;
1236         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1237         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1238         if (!arcmsr_hba_wait_msgint_ready(acb)) {
1239                 printk(KERN_NOTICE
1240                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1241                         , acb->host->host_no);
1242         }
1243 }
1244
1245 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1246 {
1247         struct MessageUnit_B *reg = acb->pmuB;
1248         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1249         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1250
1251         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1252                 printk(KERN_NOTICE
1253                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1254                         , acb->host->host_no);
1255         }
1256 }
1257
1258 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1259 {
1260         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1261         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1262         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1263         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1264         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1265                 printk(KERN_NOTICE
1266                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1267                         , pACB->host->host_no);
1268         }
1269         return;
1270 }
1271 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1272 {
1273         switch (acb->adapter_type) {
1274         case ACB_ADAPTER_TYPE_A: {
1275                 arcmsr_stop_hba_bgrb(acb);
1276                 }
1277                 break;
1278
1279         case ACB_ADAPTER_TYPE_B: {
1280                 arcmsr_stop_hbb_bgrb(acb);
1281                 }
1282                 break;
1283         case ACB_ADAPTER_TYPE_C: {
1284                 arcmsr_stop_hbc_bgrb(acb);
1285                 }
1286         }
1287 }
1288
1289 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1290 {
1291         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1292 }
1293
1294 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1295 {
1296         switch (acb->adapter_type) {
1297         case ACB_ADAPTER_TYPE_A: {
1298                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1299                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1300                 }
1301                 break;
1302
1303         case ACB_ADAPTER_TYPE_B: {
1304                 struct MessageUnit_B *reg = acb->pmuB;
1305                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1306                 }
1307                 break;
1308         case ACB_ADAPTER_TYPE_C: {
1309                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1310                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1311                 }
1312         }
1313 }
1314
1315 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1316 {
1317         switch (acb->adapter_type) {
1318         case ACB_ADAPTER_TYPE_A: {
1319                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1320                 /*
1321                 ** push inbound doorbell tell iop, driver data write ok
1322                 ** and wait reply on next hwinterrupt for next Qbuffer post
1323                 */
1324                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1325                 }
1326                 break;
1327
1328         case ACB_ADAPTER_TYPE_B: {
1329                 struct MessageUnit_B *reg = acb->pmuB;
1330                 /*
1331                 ** push inbound doorbell tell iop, driver data write ok
1332                 ** and wait reply on next hwinterrupt for next Qbuffer post
1333                 */
1334                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1335                 }
1336                 break;
1337         case ACB_ADAPTER_TYPE_C: {
1338                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1339                 /*
1340                 ** push inbound doorbell tell iop, driver data write ok
1341                 ** and wait reply on next hwinterrupt for next Qbuffer post
1342                 */
1343                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1344                 }
1345                 break;
1346         }
1347 }
1348
1349 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1350 {
1351         struct QBUFFER __iomem *qbuffer = NULL;
1352         switch (acb->adapter_type) {
1353
1354         case ACB_ADAPTER_TYPE_A: {
1355                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1356                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1357                 }
1358                 break;
1359
1360         case ACB_ADAPTER_TYPE_B: {
1361                 struct MessageUnit_B *reg = acb->pmuB;
1362                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1363                 }
1364                 break;
1365         case ACB_ADAPTER_TYPE_C: {
1366                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1367                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1368                 }
1369         }
1370         return qbuffer;
1371 }
1372
1373 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1374 {
1375         struct QBUFFER __iomem *pqbuffer = NULL;
1376         switch (acb->adapter_type) {
1377
1378         case ACB_ADAPTER_TYPE_A: {
1379                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1380                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1381                 }
1382                 break;
1383
1384         case ACB_ADAPTER_TYPE_B: {
1385                 struct MessageUnit_B  *reg = acb->pmuB;
1386                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1387                 }
1388                 break;
1389         case ACB_ADAPTER_TYPE_C: {
1390                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1391                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1392         }
1393
1394         }
1395         return pqbuffer;
1396 }
1397
1398 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1399 {
1400         struct QBUFFER __iomem *prbuffer;
1401         struct QBUFFER *pQbuffer;
1402         uint8_t __iomem *iop_data;
1403         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1404         rqbuf_lastindex = acb->rqbuf_lastindex;
1405         rqbuf_firstindex = acb->rqbuf_firstindex;
1406         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1407         iop_data = (uint8_t __iomem *)prbuffer->data;
1408         iop_len = prbuffer->data_len;
1409         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1410
1411         if (my_empty_len >= iop_len)
1412         {
1413                 while (iop_len > 0) {
1414                         pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1415                         memcpy(pQbuffer, iop_data, 1);
1416                         rqbuf_lastindex++;
1417                         rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1418                         iop_data++;
1419                         iop_len--;
1420                 }
1421                 acb->rqbuf_lastindex = rqbuf_lastindex;
1422                 arcmsr_iop_message_read(acb);
1423         }
1424
1425         else {
1426                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1427         }
1428 }
1429
1430 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1431 {
1432         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1433         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1434                 uint8_t *pQbuffer;
1435                 struct QBUFFER __iomem *pwbuffer;
1436                 uint8_t __iomem *iop_data;
1437                 int32_t allxfer_len = 0;
1438
1439                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1440                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1441                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1442
1443                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1444                                                         (allxfer_len < 124)) {
1445                         pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1446                         memcpy(iop_data, pQbuffer, 1);
1447                         acb->wqbuf_firstindex++;
1448                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1449                         iop_data++;
1450                         allxfer_len++;
1451                 }
1452                 pwbuffer->data_len = allxfer_len;
1453
1454                 arcmsr_iop_message_wrote(acb);
1455         }
1456
1457         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1458                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1459         }
1460 }
1461
1462 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1463 {
1464         uint32_t outbound_doorbell;
1465         struct MessageUnit_A __iomem *reg = acb->pmuA;
1466         outbound_doorbell = readl(&reg->outbound_doorbell);
1467         writel(outbound_doorbell, &reg->outbound_doorbell);
1468         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1469                 arcmsr_iop2drv_data_wrote_handle(acb);
1470         }
1471
1472         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1473                 arcmsr_iop2drv_data_read_handle(acb);
1474         }
1475 }
1476 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1477 {
1478         uint32_t outbound_doorbell;
1479         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1480         /*
1481         *******************************************************************
1482         **  Maybe here we need to check wrqbuffer_lock is lock or not
1483         **  DOORBELL: din! don!
1484         **  check if there are any mail need to pack from firmware
1485         *******************************************************************
1486         */
1487         outbound_doorbell = readl(&reg->outbound_doorbell);
1488         writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1489         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1490                 arcmsr_iop2drv_data_wrote_handle(pACB);
1491         }
1492         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1493                 arcmsr_iop2drv_data_read_handle(pACB);
1494         }
1495         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1496                 arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
1497         }
1498         return;
1499 }
1500 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1501 {
1502         uint32_t flag_ccb;
1503         struct MessageUnit_A __iomem *reg = acb->pmuA;
1504         struct ARCMSR_CDB *pARCMSR_CDB;
1505         struct CommandControlBlock *pCCB;
1506         bool error;
1507         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1508                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1509                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1510                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1511                 arcmsr_drain_donequeue(acb, pCCB, error);
1512         }
1513 }
1514
1515 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1516 {
1517         uint32_t index;
1518         uint32_t flag_ccb;
1519         struct MessageUnit_B *reg = acb->pmuB;
1520         struct ARCMSR_CDB *pARCMSR_CDB;
1521         struct CommandControlBlock *pCCB;
1522         bool error;
1523         index = reg->doneq_index;
1524         while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1525                 writel(0, &reg->done_qbuffer[index]);
1526                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1527                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1528                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1529                 arcmsr_drain_donequeue(acb, pCCB, error);
1530                 index++;
1531                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1532                 reg->doneq_index = index;
1533         }
1534 }
1535
1536 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1537 {
1538         struct MessageUnit_C *phbcmu;
1539         struct ARCMSR_CDB *arcmsr_cdb;
1540         struct CommandControlBlock *ccb;
1541         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1542         int error;
1543
1544         phbcmu = (struct MessageUnit_C *)acb->pmuC;
1545         /* areca cdb command done */
1546         /* Use correct offset and size for syncing */
1547
1548         while (readl(&phbcmu->host_int_status) &
1549         ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1550         /* check if command done with no error*/
1551         flag_ccb = readl(&phbcmu->outbound_queueport_low);
1552         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1553         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1554         ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1555         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1556         /* check if command done with no error */
1557         arcmsr_drain_donequeue(acb, ccb, error);
1558         if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1559                 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1560                 break;
1561         }
1562         throttling++;
1563         }
1564 }
1565 /*
1566 **********************************************************************************
1567 ** Handle a message interrupt
1568 **
1569 ** The only message interrupt we expect is in response to a query for the current adapter config.
1570 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1571 **********************************************************************************
1572 */
1573 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1574 {
1575         struct MessageUnit_A *reg  = acb->pmuA;
1576         /*clear interrupt and message state*/
1577         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1578         schedule_work(&acb->arcmsr_do_message_isr_bh);
1579 }
1580 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1581 {
1582         struct MessageUnit_B *reg  = acb->pmuB;
1583
1584         /*clear interrupt and message state*/
1585         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1586         schedule_work(&acb->arcmsr_do_message_isr_bh);
1587 }
1588 /*
1589 **********************************************************************************
1590 ** Handle a message interrupt
1591 **
1592 ** The only message interrupt we expect is in response to a query for the
1593 ** current adapter config.
1594 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1595 **********************************************************************************
1596 */
1597 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1598 {
1599         struct MessageUnit_C *reg  = acb->pmuC;
1600         /*clear interrupt and message state*/
1601         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1602         schedule_work(&acb->arcmsr_do_message_isr_bh);
1603 }
1604
1605 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1606 {
1607         uint32_t outbound_intstatus;
1608         struct MessageUnit_A __iomem *reg = acb->pmuA;
1609         outbound_intstatus = readl(&reg->outbound_intstatus) &
1610                 acb->outbound_int_enable;
1611         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1612                 return 1;
1613         }
1614         writel(outbound_intstatus, &reg->outbound_intstatus);
1615         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1616                 arcmsr_hba_doorbell_isr(acb);
1617         }
1618         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1619                 arcmsr_hba_postqueue_isr(acb);
1620         }
1621         if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)        {
1622                 /* messenger of "driver to iop commands" */
1623                 arcmsr_hba_message_isr(acb);
1624         }
1625         return 0;
1626 }
1627
1628 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1629 {
1630         uint32_t outbound_doorbell;
1631         struct MessageUnit_B *reg = acb->pmuB;
1632         outbound_doorbell = readl(reg->iop2drv_doorbell) &
1633                                 acb->outbound_int_enable;
1634         if (!outbound_doorbell)
1635                 return 1;
1636
1637         writel(~outbound_doorbell, reg->iop2drv_doorbell);
1638         /*in case the last action of doorbell interrupt clearance is cached,
1639         this action can push HW to write down the clear bit*/
1640         readl(reg->iop2drv_doorbell);
1641         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1642         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1643                 arcmsr_iop2drv_data_wrote_handle(acb);
1644         }
1645         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1646                 arcmsr_iop2drv_data_read_handle(acb);
1647         }
1648         if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1649                 arcmsr_hbb_postqueue_isr(acb);
1650         }
1651         if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1652                 /* messenger of "driver to iop commands" */
1653                 arcmsr_hbb_message_isr(acb);
1654         }
1655         return 0;
1656 }
1657
1658 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1659 {
1660         uint32_t host_interrupt_status;
1661         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1662         /*
1663         *********************************************
1664         **   check outbound intstatus
1665         *********************************************
1666         */
1667         host_interrupt_status = readl(&phbcmu->host_int_status);
1668         if (!host_interrupt_status) {
1669                 /*it must be share irq*/
1670                 return 1;
1671         }
1672         /* MU ioctl transfer doorbell interrupts*/
1673         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1674                 arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
1675         }
1676         /* MU post queue interrupts*/
1677         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1678                 arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
1679         }
1680         return 0;
1681 }
1682 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1683 {
1684         switch (acb->adapter_type) {
1685         case ACB_ADAPTER_TYPE_A: {
1686                 if (arcmsr_handle_hba_isr(acb)) {
1687                         return IRQ_NONE;
1688                 }
1689                 }
1690                 break;
1691
1692         case ACB_ADAPTER_TYPE_B: {
1693                 if (arcmsr_handle_hbb_isr(acb)) {
1694                         return IRQ_NONE;
1695                 }
1696                 }
1697                 break;
1698          case ACB_ADAPTER_TYPE_C: {
1699                 if (arcmsr_handle_hbc_isr(acb)) {
1700                         return IRQ_NONE;
1701                 }
1702                 }
1703         }
1704         return IRQ_HANDLED;
1705 }
1706
1707 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1708 {
1709         if (acb) {
1710                 /* stop adapter background rebuild */
1711                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1712                         uint32_t intmask_org;
1713                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1714                         intmask_org = arcmsr_disable_outbound_ints(acb);
1715                         arcmsr_stop_adapter_bgrb(acb);
1716                         arcmsr_flush_adapter_cache(acb);
1717                         arcmsr_enable_outbound_ints(acb, intmask_org);
1718                 }
1719         }
1720 }
1721
1722 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1723 {
1724         int32_t wqbuf_firstindex, wqbuf_lastindex;
1725         uint8_t *pQbuffer;
1726         struct QBUFFER __iomem *pwbuffer;
1727         uint8_t __iomem *iop_data;
1728         int32_t allxfer_len = 0;
1729         pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1730         iop_data = (uint8_t __iomem *)pwbuffer->data;
1731         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1732                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1733                 wqbuf_firstindex = acb->wqbuf_firstindex;
1734                 wqbuf_lastindex = acb->wqbuf_lastindex;
1735                 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1736                         pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1737                         memcpy(iop_data, pQbuffer, 1);
1738                         wqbuf_firstindex++;
1739                         wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1740                         iop_data++;
1741                         allxfer_len++;
1742                 }
1743                 acb->wqbuf_firstindex = wqbuf_firstindex;
1744                 pwbuffer->data_len = allxfer_len;
1745                 arcmsr_iop_message_wrote(acb);
1746         }
1747 }
1748
1749 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1750                                         struct scsi_cmnd *cmd)
1751 {
1752         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1753         int retvalue = 0, transfer_len = 0;
1754         char *buffer;
1755         struct scatterlist *sg;
1756         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1757                                                 (uint32_t ) cmd->cmnd[6] << 16 |
1758                                                 (uint32_t ) cmd->cmnd[7] << 8  |
1759                                                 (uint32_t ) cmd->cmnd[8];
1760                                                 /* 4 bytes: Areca io control code */
1761         sg = scsi_sglist(cmd);
1762         buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1763         if (scsi_sg_count(cmd) > 1) {
1764                 retvalue = ARCMSR_MESSAGE_FAIL;
1765                 goto message_out;
1766         }
1767         transfer_len += sg->length;
1768
1769         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1770                 retvalue = ARCMSR_MESSAGE_FAIL;
1771                 goto message_out;
1772         }
1773         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1774         switch(controlcode) {
1775
1776         case ARCMSR_MESSAGE_READ_RQBUFFER: {
1777                 unsigned char *ver_addr;
1778                 uint8_t *pQbuffer, *ptmpQbuffer;
1779                 int32_t allxfer_len = 0;
1780
1781                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1782                 if (!ver_addr) {
1783                         retvalue = ARCMSR_MESSAGE_FAIL;
1784                         goto message_out;
1785                 }
1786
1787                 ptmpQbuffer = ver_addr;
1788                 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1789                         && (allxfer_len < 1031)) {
1790                         pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1791                         memcpy(ptmpQbuffer, pQbuffer, 1);
1792                         acb->rqbuf_firstindex++;
1793                         acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1794                         ptmpQbuffer++;
1795                         allxfer_len++;
1796                 }
1797                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1798
1799                         struct QBUFFER __iomem *prbuffer;
1800                         uint8_t __iomem *iop_data;
1801                         int32_t iop_len;
1802
1803                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1804                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1805                         iop_data = prbuffer->data;
1806                         iop_len = readl(&prbuffer->data_len);
1807                         while (iop_len > 0) {
1808                                 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1809                                 acb->rqbuf_lastindex++;
1810                                 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1811                                 iop_data++;
1812                                 iop_len--;
1813                         }
1814                         arcmsr_iop_message_read(acb);
1815                 }
1816                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1817                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1818                 if(acb->fw_flag == FW_DEADLOCK) {
1819                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1820                 }else{
1821                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1822                 }
1823                 kfree(ver_addr);
1824                 }
1825                 break;
1826
1827         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1828                 unsigned char *ver_addr;
1829                 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1830                 uint8_t *pQbuffer, *ptmpuserbuffer;
1831
1832                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1833                 if (!ver_addr) {
1834                         retvalue = ARCMSR_MESSAGE_FAIL;
1835                         goto message_out;
1836                 }
1837                 if(acb->fw_flag == FW_DEADLOCK) {
1838                         pcmdmessagefld->cmdmessage.ReturnCode =
1839                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1840                 }else{
1841                         pcmdmessagefld->cmdmessage.ReturnCode =
1842                         ARCMSR_MESSAGE_RETURNCODE_OK;
1843                 }
1844                 ptmpuserbuffer = ver_addr;
1845                 user_len = pcmdmessagefld->cmdmessage.Length;
1846                 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1847                 wqbuf_lastindex = acb->wqbuf_lastindex;
1848                 wqbuf_firstindex = acb->wqbuf_firstindex;
1849                 if (wqbuf_lastindex != wqbuf_firstindex) {
1850                         struct SENSE_DATA *sensebuffer =
1851                                 (struct SENSE_DATA *)cmd->sense_buffer;
1852                         arcmsr_post_ioctldata2iop(acb);
1853                         /* has error report sensedata */
1854                         sensebuffer->ErrorCode = 0x70;
1855                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
1856                         sensebuffer->AdditionalSenseLength = 0x0A;
1857                         sensebuffer->AdditionalSenseCode = 0x20;
1858                         sensebuffer->Valid = 1;
1859                         retvalue = ARCMSR_MESSAGE_FAIL;
1860                 } else {
1861                         my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1862                                 &(ARCMSR_MAX_QBUFFER - 1);
1863                         if (my_empty_len >= user_len) {
1864                                 while (user_len > 0) {
1865                                         pQbuffer =
1866                                         &acb->wqbuffer[acb->wqbuf_lastindex];
1867                                         memcpy(pQbuffer, ptmpuserbuffer, 1);
1868                                         acb->wqbuf_lastindex++;
1869                                         acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1870                                         ptmpuserbuffer++;
1871                                         user_len--;
1872                                 }
1873                                 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1874                                         acb->acb_flags &=
1875                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1876                                         arcmsr_post_ioctldata2iop(acb);
1877                                 }
1878                         } else {
1879                                 /* has error report sensedata */
1880                                 struct SENSE_DATA *sensebuffer =
1881                                         (struct SENSE_DATA *)cmd->sense_buffer;
1882                                 sensebuffer->ErrorCode = 0x70;
1883                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1884                                 sensebuffer->AdditionalSenseLength = 0x0A;
1885                                 sensebuffer->AdditionalSenseCode = 0x20;
1886                                 sensebuffer->Valid = 1;
1887                                 retvalue = ARCMSR_MESSAGE_FAIL;
1888                         }
1889                         }
1890                         kfree(ver_addr);
1891                 }
1892                 break;
1893
1894         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1895                 uint8_t *pQbuffer = acb->rqbuffer;
1896                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1897                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1898                         arcmsr_iop_message_read(acb);
1899                 }
1900                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1901                 acb->rqbuf_firstindex = 0;
1902                 acb->rqbuf_lastindex = 0;
1903                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1904                 if(acb->fw_flag == FW_DEADLOCK) {
1905                         pcmdmessagefld->cmdmessage.ReturnCode =
1906                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1907                 }else{
1908                         pcmdmessagefld->cmdmessage.ReturnCode =
1909                         ARCMSR_MESSAGE_RETURNCODE_OK;
1910                 }
1911                 }
1912                 break;
1913
1914         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1915                 uint8_t *pQbuffer = acb->wqbuffer;
1916                 if(acb->fw_flag == FW_DEADLOCK) {
1917                         pcmdmessagefld->cmdmessage.ReturnCode =
1918                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1919                 }else{
1920                         pcmdmessagefld->cmdmessage.ReturnCode =
1921                         ARCMSR_MESSAGE_RETURNCODE_OK;
1922                 }
1923
1924                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1925                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1926                         arcmsr_iop_message_read(acb);
1927                 }
1928                 acb->acb_flags |=
1929                         (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1930                                 ACB_F_MESSAGE_WQBUFFER_READED);
1931                 acb->wqbuf_firstindex = 0;
1932                 acb->wqbuf_lastindex = 0;
1933                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1934                 }
1935                 break;
1936
1937         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1938                 uint8_t *pQbuffer;
1939
1940                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1941                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1942                         arcmsr_iop_message_read(acb);
1943                 }
1944                 acb->acb_flags |=
1945                         (ACB_F_MESSAGE_WQBUFFER_CLEARED
1946                         | ACB_F_MESSAGE_RQBUFFER_CLEARED
1947                         | ACB_F_MESSAGE_WQBUFFER_READED);
1948                 acb->rqbuf_firstindex = 0;
1949                 acb->rqbuf_lastindex = 0;
1950                 acb->wqbuf_firstindex = 0;
1951                 acb->wqbuf_lastindex = 0;
1952                 pQbuffer = acb->rqbuffer;
1953                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1954                 pQbuffer = acb->wqbuffer;
1955                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1956                 if(acb->fw_flag == FW_DEADLOCK) {
1957                         pcmdmessagefld->cmdmessage.ReturnCode =
1958                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1959                 }else{
1960                         pcmdmessagefld->cmdmessage.ReturnCode =
1961                         ARCMSR_MESSAGE_RETURNCODE_OK;
1962                 }
1963                 }
1964                 break;
1965
1966         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1967                 if(acb->fw_flag == FW_DEADLOCK) {
1968                         pcmdmessagefld->cmdmessage.ReturnCode =
1969                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1970                 }else{
1971                         pcmdmessagefld->cmdmessage.ReturnCode =
1972                         ARCMSR_MESSAGE_RETURNCODE_3F;
1973                 }
1974                 break;
1975                 }
1976         case ARCMSR_MESSAGE_SAY_HELLO: {
1977                 int8_t *hello_string = "Hello! I am ARCMSR";
1978                 if(acb->fw_flag == FW_DEADLOCK) {
1979                         pcmdmessagefld->cmdmessage.ReturnCode =
1980                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1981                 }else{
1982                         pcmdmessagefld->cmdmessage.ReturnCode =
1983                         ARCMSR_MESSAGE_RETURNCODE_OK;
1984                 }
1985                 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1986                         , (int16_t)strlen(hello_string));
1987                 }
1988                 break;
1989
1990         case ARCMSR_MESSAGE_SAY_GOODBYE:
1991                 if(acb->fw_flag == FW_DEADLOCK) {
1992                         pcmdmessagefld->cmdmessage.ReturnCode =
1993                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1994                 }
1995                 arcmsr_iop_parking(acb);
1996                 break;
1997
1998         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1999                 if(acb->fw_flag == FW_DEADLOCK) {
2000                         pcmdmessagefld->cmdmessage.ReturnCode =
2001                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2002                 }
2003                 arcmsr_flush_adapter_cache(acb);
2004                 break;
2005
2006         default:
2007                 retvalue = ARCMSR_MESSAGE_FAIL;
2008         }
2009         message_out:
2010         sg = scsi_sglist(cmd);
2011         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2012         return retvalue;
2013 }
2014
2015 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
2016 {
2017         struct list_head *head = &acb->ccb_free_list;
2018         struct CommandControlBlock *ccb = NULL;
2019         unsigned long flags;
2020         spin_lock_irqsave(&acb->ccblist_lock, flags);
2021         if (!list_empty(head)) {
2022                 ccb = list_entry(head->next, struct CommandControlBlock, list);
2023                 list_del_init(&ccb->list);
2024         }else{
2025                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2026                 return 0;
2027         }
2028         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2029         return ccb;
2030 }
2031
2032 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2033                 struct scsi_cmnd *cmd)
2034 {
2035         switch (cmd->cmnd[0]) {
2036         case INQUIRY: {
2037                 unsigned char inqdata[36];
2038                 char *buffer;
2039                 struct scatterlist *sg;
2040
2041                 if (cmd->device->lun) {
2042                         cmd->result = (DID_TIME_OUT << 16);
2043                         cmd->scsi_done(cmd);
2044                         return;
2045                 }
2046                 inqdata[0] = TYPE_PROCESSOR;
2047                 /* Periph Qualifier & Periph Dev Type */
2048                 inqdata[1] = 0;
2049                 /* rem media bit & Dev Type Modifier */
2050                 inqdata[2] = 0;
2051                 /* ISO, ECMA, & ANSI versions */
2052                 inqdata[4] = 31;
2053                 /* length of additional data */
2054                 strncpy(&inqdata[8], "Areca   ", 8);
2055                 /* Vendor Identification */
2056                 strncpy(&inqdata[16], "RAID controller ", 16);
2057                 /* Product Identification */
2058                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2059
2060                 sg = scsi_sglist(cmd);
2061                 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
2062
2063                 memcpy(buffer, inqdata, sizeof(inqdata));
2064                 sg = scsi_sglist(cmd);
2065                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2066
2067                 cmd->scsi_done(cmd);
2068         }
2069         break;
2070         case WRITE_BUFFER:
2071         case READ_BUFFER: {
2072                 if (arcmsr_iop_message_xfer(acb, cmd))
2073                         cmd->result = (DID_ERROR << 16);
2074                 cmd->scsi_done(cmd);
2075         }
2076         break;
2077         default:
2078                 cmd->scsi_done(cmd);
2079         }
2080 }
2081
2082 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2083         void (* done)(struct scsi_cmnd *))
2084 {
2085         struct Scsi_Host *host = cmd->device->host;
2086         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2087         struct CommandControlBlock *ccb;
2088         int target = cmd->device->id;
2089         int lun = cmd->device->lun;
2090         uint8_t scsicmd = cmd->cmnd[0];
2091         cmd->scsi_done = done;
2092         cmd->host_scribble = NULL;
2093         cmd->result = 0;
2094         if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2095                 if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2096                         cmd->result = (DID_NO_CONNECT << 16);
2097                 }
2098                 cmd->scsi_done(cmd);
2099                 return 0;
2100         }
2101         if (target == 16) {
2102                 /* virtual device for iop message transfer */
2103                 arcmsr_handle_virtual_command(acb, cmd);
2104                 return 0;
2105         }
2106         if (atomic_read(&acb->ccboutstandingcount) >=
2107                         ARCMSR_MAX_OUTSTANDING_CMD)
2108                 return SCSI_MLQUEUE_HOST_BUSY;
2109         if ((scsicmd == SCSI_CMD_ARECA_SPECIFIC)) {
2110                 printk(KERN_NOTICE "Receiveing SCSI_CMD_ARECA_SPECIFIC command..\n");
2111                 return 0;
2112         }
2113         ccb = arcmsr_get_freeccb(acb);
2114         if (!ccb)
2115                 return SCSI_MLQUEUE_HOST_BUSY;
2116         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2117                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2118                 cmd->scsi_done(cmd);
2119                 return 0;
2120         }
2121         arcmsr_post_ccb(acb, ccb);
2122         return 0;
2123 }
2124
2125 static DEF_SCSI_QCMD(arcmsr_queue_command)
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 }