drivers/scsi/arcmsr/arcmsr_hba.c

   1 /*
   2 *******************************************************************************
   3 **        O.S   : Linux
   4 **   FILE NAME  : arcmsr_hba.c
   5 **        BY    : Nick Cheng
   6 **   Description: SCSI RAID Device Driver for
   7 **                ARECA RAID Host adapter
   8 *******************************************************************************
   9 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
  10 **
  11 **     Web site: www.areca.com.tw
  12 **       E-mail: support@areca.com.tw
  13 **
  14 ** This program is free software; you can redistribute it and/or modify
  15 ** it under the terms of the GNU General Public License version 2 as
  16 ** published by the Free Software Foundation.
  17 ** This program is distributed in the hope that it will be useful,
  18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ** GNU General Public License for more details.
  21 *******************************************************************************
  22 ** Redistribution and use in source and binary forms, with or without
  23 ** modification, are permitted provided that the following conditions
  24 ** are met:
  25 ** 1. Redistributions of source code must retain the above copyright
  26 **    notice, this list of conditions and the following disclaimer.
  27 ** 2. Redistributions in binary form must reproduce the above copyright
  28 **    notice, this list of conditions and the following disclaimer in the
  29 **    documentation and/or other materials provided with the distribution.
  30 ** 3. The name of the author may not be used to endorse or promote products
  31 **    derived from this software without specific prior written permission.
  32 **
  33 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  34 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  35 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  36 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  37 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
  38 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  39 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
  40 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  41 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
  42 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  43 *******************************************************************************
  44 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
  45 **     Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
  46 *******************************************************************************
  47 */
  48 #include <linux/module.h>
  49 #include <linux/reboot.h>
  50 #include <linux/spinlock.h>
  51 #include <linux/pci_ids.h>
  52 #include <linux/interrupt.h>
  53 #include <linux/moduleparam.h>
  54 #include <linux/errno.h>
  55 #include <linux/types.h>
  56 #include <linux/delay.h>
  57 #include <linux/dma-mapping.h>
  58 #include <linux/timer.h>
  59 #include <linux/slab.h>
  60 #include <linux/pci.h>
  61 #include <linux/aer.h>
  62 #include <asm/dma.h>
  63 #include <asm/io.h>
  64 #include <asm/system.h>
  65 #include <asm/uaccess.h>
  66 #include <scsi/scsi_host.h>
  67 #include <scsi/scsi.h>
  68 #include <scsi/scsi_cmnd.h>
  69 #include <scsi/scsi_tcq.h>
  70 #include <scsi/scsi_device.h>
  71 #include <scsi/scsi_transport.h>
  72 #include <scsi/scsicam.h>
  73 #include "arcmsr.h"
  74 MODULE_AUTHOR("Nick Cheng <support@areca.com.tw>");
  75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx/1880) SATA/SAS RAID Host Bus Adapter");
  76 MODULE_LICENSE("Dual BSD/GPL");
  77 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
  78
  79 #define ARCMSR_SLEEPTIME        10
  80 #define ARCMSR_RETRYCOUNT       12
  81
  82 wait_queue_head_t wait_q;
  83 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
  84                                         struct scsi_cmnd *cmd);
  85 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
  86 static int arcmsr_abort(struct scsi_cmnd *);
  87 static int arcmsr_bus_reset(struct scsi_cmnd *);
  88 static int arcmsr_bios_param(struct scsi_device *sdev,
  89                 struct block_device *bdev, sector_t capacity, int *info);
  90 static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
  91 static int arcmsr_probe(struct pci_dev *pdev,
  92                                 const struct pci_device_id *id);
  93 static void arcmsr_remove(struct pci_dev *pdev);
  94 static void arcmsr_shutdown(struct pci_dev *pdev);
  95 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  96 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  97 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
  98 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
  99 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
 100 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
 101 static void arcmsr_request_device_map(unsigned long pacb);
 102 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
 103 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
 104 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
 105 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
 106 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
 107 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
 108 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
 109 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
 110 static const char *arcmsr_info(struct Scsi_Host *);
 111 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 112 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
 113                                           int queue_depth, int reason)
 114 {
 115         if (reason != SCSI_QDEPTH_DEFAULT)
 116                 return -EOPNOTSUPP;
 117
 118         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 119                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 120         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 121         return queue_depth;
 122 }
 123
 124 static struct scsi_host_template arcmsr_scsi_host_template = {
 125         .module                 = THIS_MODULE,
 126         .name                   = "ARCMSR ARECA SATA/SAS RAID Controller"
 127                                 ARCMSR_DRIVER_VERSION,
 128         .info                   = arcmsr_info,
 129         .queuecommand           = arcmsr_queue_command,
 130         .eh_abort_handler               = arcmsr_abort,
 131         .eh_bus_reset_handler   = arcmsr_bus_reset,
 132         .bios_param             = arcmsr_bios_param,
 133         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 134         .can_queue              = ARCMSR_MAX_FREECCB_NUM,
 135         .this_id                        = ARCMSR_SCSI_INITIATOR_ID,
 136         .sg_tablesize                   = ARCMSR_DEFAULT_SG_ENTRIES,
 137         .max_sectors                    = ARCMSR_MAX_XFER_SECTORS_C,
 138         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 139         .use_clustering         = ENABLE_CLUSTERING,
 140         .shost_attrs            = arcmsr_host_attrs,
 141 };
 142 static struct pci_device_id arcmsr_device_id_table[] = {
 143         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 144         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 145         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 146         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 147         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
 148         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
 149         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
 150         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
 151         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 152         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 153         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
 154         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
 155         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
 156         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
 157         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
 158         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
 159         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
 160         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
 161         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)},
 162         {0, 0}, /* Terminating entry */
 163 };
 164 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 165 static struct pci_driver arcmsr_pci_driver = {
 166         .name                   = "arcmsr",
 167         .id_table                       = arcmsr_device_id_table,
 168         .probe                  = arcmsr_probe,
 169         .remove                 = arcmsr_remove,
 170         .shutdown               = arcmsr_shutdown,
 171 };
 172 /*
 173 ****************************************************************************
 174 ****************************************************************************
 175 */
 176
 177 static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
 178 {
 179         switch (acb->adapter_type) {
 180         case ACB_ADAPTER_TYPE_A:
 181         case ACB_ADAPTER_TYPE_C:
 182                 break;
 183         case ACB_ADAPTER_TYPE_B:{
 184                 dma_free_coherent(&acb->pdev->dev,
 185                         sizeof(struct MessageUnit_B),
 186                         acb->pmuB, acb->dma_coherent_handle_hbb_mu);
 187         }
 188         }
 189 }
 190
 191 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 192 {
 193         struct pci_dev *pdev = acb->pdev;
 194         switch (acb->adapter_type){
 195         case ACB_ADAPTER_TYPE_A:{
 196                 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 197                 if (!acb->pmuA) {
 198                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 199                         return false;
 200                 }
 201                 break;
 202         }
 203         case ACB_ADAPTER_TYPE_B:{
 204                 void __iomem *mem_base0, *mem_base1;
 205                 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 206                 if (!mem_base0) {
 207                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 208                         return false;
 209                 }
 210                 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 211                 if (!mem_base1) {
 212                         iounmap(mem_base0);
 213                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 214                         return false;
 215                 }
 216                 acb->mem_base0 = mem_base0;
 217                 acb->mem_base1 = mem_base1;
 218                 break;
 219         }
 220         case ACB_ADAPTER_TYPE_C:{
 221                 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 222                 if (!acb->pmuC) {
 223                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 224                         return false;
 225                 }
 226                 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 227                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 228                         return true;
 229                 }
 230                 break;
 231         }
 232         }
 233         return true;
 234 }
 235
 236 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 237 {
 238         switch (acb->adapter_type) {
 239         case ACB_ADAPTER_TYPE_A:{
 240                 iounmap(acb->pmuA);
 241         }
 242         break;
 243         case ACB_ADAPTER_TYPE_B:{
 244                 iounmap(acb->mem_base0);
 245                 iounmap(acb->mem_base1);
 246         }
 247
 248         break;
 249         case ACB_ADAPTER_TYPE_C:{
 250                 iounmap(acb->pmuC);
 251         }
 252         }
 253 }
 254
 255 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 256 {
 257         irqreturn_t handle_state;
 258         struct AdapterControlBlock *acb = dev_id;
 259
 260         handle_state = arcmsr_interrupt(acb);
 261         return handle_state;
 262 }
 263
 264 static int arcmsr_bios_param(struct scsi_device *sdev,
 265                 struct block_device *bdev, sector_t capacity, int *geom)
 266 {
 267         int ret, heads, sectors, cylinders, total_capacity;
 268         unsigned char *buffer;/* return copy of block device's partition table */
 269
 270         buffer = scsi_bios_ptable(bdev);
 271         if (buffer) {
 272                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 273                 kfree(buffer);
 274                 if (ret != -1)
 275                         return ret;
 276         }
 277         total_capacity = capacity;
 278         heads = 64;
 279         sectors = 32;
 280         cylinders = total_capacity / (heads * sectors);
 281         if (cylinders > 1024) {
 282                 heads = 255;
 283                 sectors = 63;
 284                 cylinders = total_capacity / (heads * sectors);
 285         }
 286         geom[0] = heads;
 287         geom[1] = sectors;
 288         geom[2] = cylinders;
 289         return 0;
 290 }
 291
 292 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 293 {
 294         struct pci_dev *pdev = acb->pdev;
 295         u16 dev_id;
 296         pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 297         acb->dev_id = dev_id;
 298         switch (dev_id) {
 299         case 0x1880: {
 300                 acb->adapter_type = ACB_ADAPTER_TYPE_C;
 301                 }
 302                 break;
 303         case 0x1201: {
 304                 acb->adapter_type = ACB_ADAPTER_TYPE_B;
 305                 }
 306                 break;
 307
 308         default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
 309         }
 310 }
 311
 312 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 313 {
 314         struct MessageUnit_A __iomem *reg = acb->pmuA;
 315         int i;
 316
 317         for (i = 0; i < 2000; i++) {
 318                 if (readl(&reg->outbound_intstatus) &
 319                                 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 320                         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 321                                 &reg->outbound_intstatus);
 322                         return true;
 323                 }
 324                 msleep(10);
 325         } /* max 20 seconds */
 326
 327         return false;
 328 }
 329
 330 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
 331 {
 332         struct MessageUnit_B *reg = acb->pmuB;
 333         int i;
 334
 335         for (i = 0; i < 2000; i++) {
 336                 if (readl(reg->iop2drv_doorbell)
 337                         & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 338                         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN,
 339                                         reg->iop2drv_doorbell);
 340                         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT,
 341                                         reg->drv2iop_doorbell);
 342                         return true;
 343                 }
 344                 msleep(10);
 345         } /* max 20 seconds */
 346
 347         return false;
 348 }
 349
 350 static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
 351 {
 352         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
 353         int i;
 354
 355         for (i = 0; i < 2000; i++) {
 356                 if (readl(&phbcmu->outbound_doorbell)
 357                                 & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 358                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR,
 359                                 &phbcmu->outbound_doorbell_clear); /*clear interrupt*/
 360                         return true;
 361                 }
 362                 msleep(10);
 363         } /* max 20 seconds */
 364
 365         return false;
 366 }
 367
 368 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 369 {
 370         struct MessageUnit_A __iomem *reg = acb->pmuA;
 371         int retry_count = 30;
 372         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 373         do {
 374                 if (arcmsr_hba_wait_msgint_ready(acb))
 375                         break;
 376                 else {
 377                         retry_count--;
 378                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 379                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 380                 }
 381         } while (retry_count != 0);
 382 }
 383
 384 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
 385 {
 386         struct MessageUnit_B *reg = acb->pmuB;
 387         int retry_count = 30;
 388         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 389         do {
 390                 if (arcmsr_hbb_wait_msgint_ready(acb))
 391                         break;
 392                 else {
 393                         retry_count--;
 394                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 395                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 396                 }
 397         } while (retry_count != 0);
 398 }
 399
 400 static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
 401 {
 402         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 403         int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 404         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 405         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 406         do {
 407                 if (arcmsr_hbc_wait_msgint_ready(pACB)) {
 408                         break;
 409                 } else {
 410                         retry_count--;
 411                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 412                         timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 413                 }
 414         } while (retry_count != 0);
 415         return;
 416 }
 417 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 418 {
 419         switch (acb->adapter_type) {
 420
 421         case ACB_ADAPTER_TYPE_A: {
 422                 arcmsr_flush_hba_cache(acb);
 423                 }
 424                 break;
 425
 426         case ACB_ADAPTER_TYPE_B: {
 427                 arcmsr_flush_hbb_cache(acb);
 428                 }
 429                 break;
 430         case ACB_ADAPTER_TYPE_C: {
 431                 arcmsr_flush_hbc_cache(acb);
 432                 }
 433         }
 434 }
 435
 436 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 437 {
 438         struct pci_dev *pdev = acb->pdev;
 439         void *dma_coherent;
 440         dma_addr_t dma_coherent_handle;
 441         struct CommandControlBlock *ccb_tmp;
 442         int i = 0, j = 0;
 443         dma_addr_t cdb_phyaddr;
 444         unsigned long roundup_ccbsize;
 445         unsigned long max_xfer_len;
 446         unsigned long max_sg_entrys;
 447         uint32_t  firm_config_version;
 448
 449         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 450                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 451                         acb->devstate[i][j] = ARECA_RAID_GONE;
 452
 453         max_xfer_len = ARCMSR_MAX_XFER_LEN;
 454         max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 455         firm_config_version = acb->firm_cfg_version;
 456         if((firm_config_version & 0xFF) >= 3){
 457                 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 458                 max_sg_entrys = (max_xfer_len/4096);
 459         }
 460         acb->host->max_sectors = max_xfer_len/512;
 461         acb->host->sg_tablesize = max_sg_entrys;
 462         roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 463         acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM;
 464         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 465         if(!dma_coherent){
 466                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error\n", acb->host->host_no);
 467                 return -ENOMEM;
 468         }
 469         acb->dma_coherent = dma_coherent;
 470         acb->dma_coherent_handle = dma_coherent_handle;
 471         memset(dma_coherent, 0, acb->uncache_size);
 472         ccb_tmp = dma_coherent;
 473         acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 474         for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 475                 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 476                 ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
 477                 acb->pccb_pool[i] = ccb_tmp;
 478                 ccb_tmp->acb = acb;
 479                 INIT_LIST_HEAD(&ccb_tmp->list);
 480                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 481                 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 482                 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 483         }
 484         return 0;
 485 }
 486
 487 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
 488 {
 489         struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 490         switch (acb->adapter_type) {
 491                 case ACB_ADAPTER_TYPE_A: {
 492
 493                         struct MessageUnit_A __iomem *reg  = acb->pmuA;
 494                         char *acb_dev_map = (char *)acb->device_map;
 495                         uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
 496                         char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
 497                         int target, lun;
 498                         struct scsi_device *psdev;
 499                         char diff;
 500
 501                         atomic_inc(&acb->rq_map_token);
 502                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 503                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 504                                         diff = (*acb_dev_map)^readb(devicemap);
 505                                         if (diff != 0) {
 506                                                 char temp;
 507                                                 *acb_dev_map = readb(devicemap);
 508                                                 temp =*acb_dev_map;
 509                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 510                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 511                                                                 scsi_add_device(acb->host, 0, target, lun);
 512                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 513                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 514                                                                 if (psdev != NULL ) {
 515                                                                         scsi_remove_device(psdev);
 516                                                                         scsi_device_put(psdev);
 517                                                                 }
 518                                                         }
 519                                                         temp >>= 1;
 520                                                         diff >>= 1;
 521                                                 }
 522                                         }
 523                                         devicemap++;
 524                                         acb_dev_map++;
 525                                 }
 526                         }
 527                         break;
 528                 }
 529
 530                 case ACB_ADAPTER_TYPE_B: {
 531                         struct MessageUnit_B *reg  = acb->pmuB;
 532                         char *acb_dev_map = (char *)acb->device_map;
 533                         uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
 534                         char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
 535                         int target, lun;
 536                         struct scsi_device *psdev;
 537                         char diff;
 538
 539                         atomic_inc(&acb->rq_map_token);
 540                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 541                                 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 542                                         diff = (*acb_dev_map)^readb(devicemap);
 543                                         if (diff != 0) {
 544                                                 char temp;
 545                                                 *acb_dev_map = readb(devicemap);
 546                                                 temp =*acb_dev_map;
 547                                                 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 548                                                         if((temp & 0x01)==1 && (diff & 0x01) == 1) {
 549                                                                 scsi_add_device(acb->host, 0, target, lun);
 550                                                         }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 551                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 552                                                                 if (psdev != NULL ) {
 553                                                                         scsi_remove_device(psdev);
 554                                                                         scsi_device_put(psdev);
 555                                                                 }
 556                                                         }
 557                                                         temp >>= 1;
 558                                                         diff >>= 1;
 559                                                 }
 560                                         }
 561                                         devicemap++;
 562                                         acb_dev_map++;
 563                                 }
 564                         }
 565                 }
 566                 break;
 567                 case ACB_ADAPTER_TYPE_C: {
 568                         struct MessageUnit_C *reg  = acb->pmuC;
 569                         char *acb_dev_map = (char *)acb->device_map;
 570                         uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 571                         char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 572                         int target, lun;
 573                         struct scsi_device *psdev;
 574                         char diff;
 575
 576                         atomic_inc(&acb->rq_map_token);
 577                         if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
 578                                 for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
 579                                         diff = (*acb_dev_map)^readb(devicemap);
 580                                         if (diff != 0) {
 581                                                 char temp;
 582                                                 *acb_dev_map = readb(devicemap);
 583                                                 temp = *acb_dev_map;
 584                                                 for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
 585                                                         if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
 586                                                                 scsi_add_device(acb->host, 0, target, lun);
 587                                                         } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 588                                                                 psdev = scsi_device_lookup(acb->host, 0, target, lun);
 589                                                                 if (psdev != NULL) {
 590                                                                         scsi_remove_device(psdev);
 591                                                                         scsi_device_put(psdev);
 592                                                                 }
 593                                                         }
 594                                                         temp >>= 1;
 595                                                         diff >>= 1;
 596                                                 }
 597                                         }
 598                                         devicemap++;
 599                                         acb_dev_map++;
 600                                 }
 601                         }
 602                 }
 603         }
 604 }
 605
 606 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 607 {
 608         struct Scsi_Host *host;
 609         struct AdapterControlBlock *acb;
 610         uint8_t bus,dev_fun;
 611         int error;
 612         error = pci_enable_device(pdev);
 613         if(error){
 614                 return -ENODEV;
 615         }
 616         host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 617         if(!host){
 618                 goto pci_disable_dev;
 619         }
 620         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 621         if(error){
 622                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 623                 if(error){
 624                         printk(KERN_WARNING
 625                                "scsi%d: No suitable DMA mask available\n",
 626                                host->host_no);
 627                         goto scsi_host_release;
 628                 }
 629         }
 630         init_waitqueue_head(&wait_q);
 631         bus = pdev->bus->number;
 632         dev_fun = pdev->devfn;
 633         acb = (struct AdapterControlBlock *) host->hostdata;
 634         memset(acb,0,sizeof(struct AdapterControlBlock));
 635         acb->pdev = pdev;
 636         acb->host = host;
 637         host->max_lun = ARCMSR_MAX_TARGETLUN;
 638         host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 639         host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 640         host->can_queue = ARCMSR_MAX_FREECCB_NUM;       /* max simultaneous cmds */
 641         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 642         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 643         host->unique_id = (bus << 8) | dev_fun;
 644         pci_set_drvdata(pdev, host);
 645         pci_set_master(pdev);
 646         error = pci_request_regions(pdev, "arcmsr");
 647         if(error){
 648                 goto scsi_host_release;
 649         }
 650         spin_lock_init(&acb->eh_lock);
 651         spin_lock_init(&acb->ccblist_lock);
 652         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 653                         ACB_F_MESSAGE_RQBUFFER_CLEARED |
 654                         ACB_F_MESSAGE_WQBUFFER_READED);
 655         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 656         INIT_LIST_HEAD(&acb->ccb_free_list);
 657         arcmsr_define_adapter_type(acb);
 658         error = arcmsr_remap_pciregion(acb);
 659         if(!error){
 660                 goto pci_release_regs;
 661         }
 662         error = arcmsr_get_firmware_spec(acb);
 663         if(!error){
 664                 goto unmap_pci_region;
 665         }
 666         error = arcmsr_alloc_ccb_pool(acb);
 667         if(error){
 668                 goto free_hbb_mu;
 669         }
 670         arcmsr_iop_init(acb);
 671         error = scsi_add_host(host, &pdev->dev);
 672         if(error){
 673                 goto RAID_controller_stop;
 674         }
 675         error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
 676         if(error){
 677                 goto scsi_host_remove;
 678         }
 679         host->irq = pdev->irq;
 680         scsi_scan_host(host);
 681         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 682         atomic_set(&acb->rq_map_token, 16);
 683         atomic_set(&acb->ante_token_value, 16);
 684         acb->fw_flag = FW_NORMAL;
 685         init_timer(&acb->eternal_timer);
 686         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 687         acb->eternal_timer.data = (unsigned long) acb;
 688         acb->eternal_timer.function = &arcmsr_request_device_map;
 689         add_timer(&acb->eternal_timer);
 690         if(arcmsr_alloc_sysfs_attr(acb))
 691                 goto out_free_sysfs;
 692         return 0;
 693 out_free_sysfs:
 694 scsi_host_remove:
 695         scsi_remove_host(host);
 696 RAID_controller_stop:
 697         arcmsr_stop_adapter_bgrb(acb);
 698         arcmsr_flush_adapter_cache(acb);
 699         arcmsr_free_ccb_pool(acb);
 700 free_hbb_mu:
 701         arcmsr_free_hbb_mu(acb);
 702 unmap_pci_region:
 703         arcmsr_unmap_pciregion(acb);
 704 pci_release_regs:
 705         pci_release_regions(pdev);
 706 scsi_host_release:
 707         scsi_host_put(host);
 708 pci_disable_dev:
 709         pci_disable_device(pdev);
 710         return -ENODEV;
 711 }
 712
 713 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 714 {
 715         struct MessageUnit_A __iomem *reg = acb->pmuA;
 716         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 717         if (!arcmsr_hba_wait_msgint_ready(acb)) {
 718                 printk(KERN_NOTICE
 719                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 720                         , acb->host->host_no);
 721                 return false;
 722         }
 723         return true;
 724 }
 725
 726 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 727 {
 728         struct MessageUnit_B *reg = acb->pmuB;
 729
 730         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 731         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 732                 printk(KERN_NOTICE
 733                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 734                         , acb->host->host_no);
 735                 return false;
 736         }
 737         return true;
 738 }
 739 static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
 740 {
 741         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
 742         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 743         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 744         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
 745                 printk(KERN_NOTICE
 746                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 747                         , pACB->host->host_no);
 748                 return false;
 749         }
 750         return true;
 751 }
 752 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 753 {
 754         uint8_t rtnval = 0;
 755         switch (acb->adapter_type) {
 756         case ACB_ADAPTER_TYPE_A: {
 757                 rtnval = arcmsr_abort_hba_allcmd(acb);
 758                 }
 759                 break;
 760
 761         case ACB_ADAPTER_TYPE_B: {
 762                 rtnval = arcmsr_abort_hbb_allcmd(acb);
 763                 }
 764                 break;
 765
 766         case ACB_ADAPTER_TYPE_C: {
 767                 rtnval = arcmsr_abort_hbc_allcmd(acb);
 768                 }
 769         }
 770         return rtnval;
 771 }
 772
 773 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
 774 {
 775         struct MessageUnit_B *reg = pacb->pmuB;
 776         writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
 777         if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
 778                 printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
 779                 return false;
 780         }
 781         return true;
 782 }
 783
 784 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 785 {
 786         struct scsi_cmnd *pcmd = ccb->pcmd;
 787
 788         scsi_dma_unmap(pcmd);
 789 }
 790
 791 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 792 {
 793         struct AdapterControlBlock *acb = ccb->acb;
 794         struct scsi_cmnd *pcmd = ccb->pcmd;
 795         unsigned long flags;
 796         atomic_dec(&acb->ccboutstandingcount);
 797         arcmsr_pci_unmap_dma(ccb);
 798         ccb->startdone = ARCMSR_CCB_DONE;
 799         spin_lock_irqsave(&acb->ccblist_lock, flags);
 800         list_add_tail(&ccb->list, &acb->ccb_free_list);
 801         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 802         pcmd->scsi_done(pcmd);
 803 }
 804
 805 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 806 {
 807
 808         struct scsi_cmnd *pcmd = ccb->pcmd;
 809         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 810         pcmd->result = DID_OK << 16;
 811         if (sensebuffer) {
 812                 int sense_data_length =
 813                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 814                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 815                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 816                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 817                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 818                 sensebuffer->Valid = 1;
 819         }
 820 }
 821
 822 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 823 {
 824         u32 orig_mask = 0;
 825         switch (acb->adapter_type) {
 826         case ACB_ADAPTER_TYPE_A : {
 827                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 828                 orig_mask = readl(&reg->outbound_intmask);
 829                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 830                                                 &reg->outbound_intmask);
 831                 }
 832                 break;
 833         case ACB_ADAPTER_TYPE_B : {
 834                 struct MessageUnit_B *reg = acb->pmuB;
 835                 orig_mask = readl(reg->iop2drv_doorbell_mask);
 836                 writel(0, reg->iop2drv_doorbell_mask);
 837                 }
 838                 break;
 839         case ACB_ADAPTER_TYPE_C:{
 840                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
 841                 /* disable all outbound interrupt */
 842                 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
 843                 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
 844                 }
 845                 break;
 846         }
 847         return orig_mask;
 848 }
 849
 850 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
 851                         struct CommandControlBlock *ccb, bool error)
 852 {
 853         uint8_t id, lun;
 854         id = ccb->pcmd->device->id;
 855         lun = ccb->pcmd->device->lun;
 856         if (!error) {
 857                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 858                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 859                 ccb->pcmd->result = DID_OK << 16;
 860                 arcmsr_ccb_complete(ccb);
 861         }else{
 862                 switch (ccb->arcmsr_cdb.DeviceStatus) {
 863                 case ARCMSR_DEV_SELECT_TIMEOUT: {
 864                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 865                         ccb->pcmd->result = DID_NO_CONNECT << 16;
 866                         arcmsr_ccb_complete(ccb);
 867                         }
 868                         break;
 869
 870                 case ARCMSR_DEV_ABORTED:
 871
 872                 case ARCMSR_DEV_INIT_FAIL: {
 873                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 874                         ccb->pcmd->result = DID_BAD_TARGET << 16;
 875                         arcmsr_ccb_complete(ccb);
 876                         }
 877                         break;
 878
 879                 case ARCMSR_DEV_CHECK_CONDITION: {
 880                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 881                         arcmsr_report_sense_info(ccb);
 882                         arcmsr_ccb_complete(ccb);
 883                         }
 884                         break;
 885
 886                 default:
 887                         printk(KERN_NOTICE
 888                                 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
 889                                 but got unknown DeviceStatus = 0x%x \n"
 890                                 , acb->host->host_no
 891                                 , id
 892                                 , lun
 893                                 , ccb->arcmsr_cdb.DeviceStatus);
 894                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 895                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
 896                                 arcmsr_ccb_complete(ccb);
 897                         break;
 898                 }
 899         }
 900 }
 901
 902 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
 903 {
 904         int id, lun;
 905         if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
 906                 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
 907                         struct scsi_cmnd *abortcmd = pCCB->pcmd;
 908                         if (abortcmd) {
 909                                 id = abortcmd->device->id;
 910                                 lun = abortcmd->device->lun;
 911                                 abortcmd->result |= DID_ABORT << 16;
 912                                 arcmsr_ccb_complete(pCCB);
 913                                 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
 914                                 acb->host->host_no, pCCB);
 915                         }
 916                         return;
 917                 }
 918                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 919                                 done acb = '0x%p'"
 920                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
 921                                 " ccboutstandingcount = %d \n"
 922                                 , acb->host->host_no
 923                                 , acb
 924                                 , pCCB
 925                                 , pCCB->acb
 926                                 , pCCB->startdone
 927                                 , atomic_read(&acb->ccboutstandingcount));
 928                   return;
 929         }
 930         arcmsr_report_ccb_state(acb, pCCB, error);
 931 }
 932
 933 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 934 {
 935         int i = 0;
 936         uint32_t flag_ccb;
 937         struct ARCMSR_CDB *pARCMSR_CDB;
 938         bool error;
 939         struct CommandControlBlock *pCCB;
 940         switch (acb->adapter_type) {
 941
 942         case ACB_ADAPTER_TYPE_A: {
 943                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 944                 uint32_t outbound_intstatus;
 945                 outbound_intstatus = readl(&reg->outbound_intstatus) &
 946                                         acb->outbound_int_enable;
 947                 /*clear and abort all outbound posted Q*/
 948                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
 949                 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 950                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 951                         pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
 952                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 953                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 954                         arcmsr_drain_donequeue(acb, pCCB, error);
 955                 }
 956                 }
 957                 break;
 958
 959         case ACB_ADAPTER_TYPE_B: {
 960                 struct MessageUnit_B *reg = acb->pmuB;
 961                 /*clear all outbound posted Q*/
 962                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
 963                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 964                         if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 965                                 writel(0, &reg->done_qbuffer[i]);
 966                                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
 967                                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 968                                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
 969                                 arcmsr_drain_donequeue(acb, pCCB, error);
 970                         }
 971                         reg->post_qbuffer[i] = 0;
 972                 }
 973                 reg->doneq_index = 0;
 974                 reg->postq_index = 0;
 975                 }
 976                 break;
 977         case ACB_ADAPTER_TYPE_C: {
 978                 struct MessageUnit_C *reg = acb->pmuC;
 979                 struct  ARCMSR_CDB *pARCMSR_CDB;
 980                 uint32_t flag_ccb, ccb_cdb_phy;
 981                 bool error;
 982                 struct CommandControlBlock *pCCB;
 983                 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 984                         /*need to do*/
 985                         flag_ccb = readl(&reg->outbound_queueport_low);
 986                         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
 987                         pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
 988                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
 989                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
 990                         arcmsr_drain_donequeue(acb, pCCB, error);
 991                 }
 992         }
 993         }
 994 }
 995 static void arcmsr_remove(struct pci_dev *pdev)
 996 {
 997         struct Scsi_Host *host = pci_get_drvdata(pdev);
 998         struct AdapterControlBlock *acb =
 999                 (struct AdapterControlBlock *) host->hostdata;
1000         int poll_count = 0;
1001         arcmsr_free_sysfs_attr(acb);
1002         scsi_remove_host(host);
1003         flush_work_sync(&acb->arcmsr_do_message_isr_bh);
1004         del_timer_sync(&acb->eternal_timer);
1005         arcmsr_disable_outbound_ints(acb);
1006         arcmsr_stop_adapter_bgrb(acb);
1007         arcmsr_flush_adapter_cache(acb);
1008         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1009         acb->acb_flags &= ~ACB_F_IOP_INITED;
1010
1011         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1012                 if (!atomic_read(&acb->ccboutstandingcount))
1013                         break;
1014                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1015                 msleep(25);
1016         }
1017
1018         if (atomic_read(&acb->ccboutstandingcount)) {
1019                 int i;
1020
1021                 arcmsr_abort_allcmd(acb);
1022                 arcmsr_done4abort_postqueue(acb);
1023                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1024                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
1025                         if (ccb->startdone == ARCMSR_CCB_START) {
1026                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1027                                 ccb->pcmd->result = DID_ABORT << 16;
1028                                 arcmsr_ccb_complete(ccb);
1029                         }
1030                 }
1031         }
1032         free_irq(pdev->irq, acb);
1033         arcmsr_free_ccb_pool(acb);
1034         arcmsr_free_hbb_mu(acb);
1035         arcmsr_unmap_pciregion(acb);
1036         pci_release_regions(pdev);
1037         scsi_host_put(host);
1038         pci_disable_device(pdev);
1039         pci_set_drvdata(pdev, NULL);
1040 }
1041
1042 static void arcmsr_shutdown(struct pci_dev *pdev)
1043 {
1044         struct Scsi_Host *host = pci_get_drvdata(pdev);
1045         struct AdapterControlBlock *acb =
1046                 (struct AdapterControlBlock *)host->hostdata;
1047         del_timer_sync(&acb->eternal_timer);
1048         arcmsr_disable_outbound_ints(acb);
1049         flush_work_sync(&acb->arcmsr_do_message_isr_bh);
1050         arcmsr_stop_adapter_bgrb(acb);
1051         arcmsr_flush_adapter_cache(acb);
1052 }
1053
1054 static int arcmsr_module_init(void)
1055 {
1056         int error = 0;
1057         error = pci_register_driver(&arcmsr_pci_driver);
1058         return error;
1059 }
1060
1061 static void arcmsr_module_exit(void)
1062 {
1063         pci_unregister_driver(&arcmsr_pci_driver);
1064 }
1065 module_init(arcmsr_module_init);
1066 module_exit(arcmsr_module_exit);
1067
1068 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1069                                                 u32 intmask_org)
1070 {
1071         u32 mask;
1072         switch (acb->adapter_type) {
1073
1074         case ACB_ADAPTER_TYPE_A: {
1075                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1076                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1077                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1078                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1079                 writel(mask, &reg->outbound_intmask);
1080                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1081                 }
1082                 break;
1083
1084         case ACB_ADAPTER_TYPE_B: {
1085                 struct MessageUnit_B *reg = acb->pmuB;
1086                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1087                         ARCMSR_IOP2DRV_DATA_READ_OK |
1088                         ARCMSR_IOP2DRV_CDB_DONE |
1089                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1090                 writel(mask, reg->iop2drv_doorbell_mask);
1091                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1092                 }
1093                 break;
1094         case ACB_ADAPTER_TYPE_C: {
1095                 struct MessageUnit_C *reg = acb->pmuC;
1096                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1097                 writel(intmask_org & mask, &reg->host_int_mask);
1098                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1099                 }
1100         }
1101 }
1102
1103 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1104         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1105 {
1106         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1107         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1108         __le32 address_lo, address_hi;
1109         int arccdbsize = 0x30;
1110         __le32 length = 0;
1111         int i;
1112         struct scatterlist *sg;
1113         int nseg;
1114         ccb->pcmd = pcmd;
1115         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1116         arcmsr_cdb->TargetID = pcmd->device->id;
1117         arcmsr_cdb->LUN = pcmd->device->lun;
1118         arcmsr_cdb->Function = 1;
1119         arcmsr_cdb->Context = 0;
1120         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1121
1122         nseg = scsi_dma_map(pcmd);
1123         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1124                 return FAILED;
1125         scsi_for_each_sg(pcmd, sg, nseg, i) {
1126                 /* Get the physical address of the current data pointer */
1127                 length = cpu_to_le32(sg_dma_len(sg));
1128                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1129                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1130                 if (address_hi == 0) {
1131                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1132
1133                         pdma_sg->address = address_lo;
1134                         pdma_sg->length = length;
1135                         psge += sizeof (struct SG32ENTRY);
1136                         arccdbsize += sizeof (struct SG32ENTRY);
1137                 } else {
1138                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1139
1140                         pdma_sg->addresshigh = address_hi;
1141                         pdma_sg->address = address_lo;
1142                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1143                         psge += sizeof (struct SG64ENTRY);
1144                         arccdbsize += sizeof (struct SG64ENTRY);
1145                 }
1146         }
1147         arcmsr_cdb->sgcount = (uint8_t)nseg;
1148         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1149         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1150         if ( arccdbsize > 256)
1151                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1152         if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1153                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1154         ccb->arc_cdb_size = arccdbsize;
1155         return SUCCESS;
1156 }
1157
1158 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1159 {
1160         uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1161         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1162         atomic_inc(&acb->ccboutstandingcount);
1163         ccb->startdone = ARCMSR_CCB_START;
1164         switch (acb->adapter_type) {
1165         case ACB_ADAPTER_TYPE_A: {
1166                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1167
1168                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1169                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1170                         &reg->inbound_queueport);
1171                 else {
1172                                 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1173                 }
1174                 }
1175                 break;
1176
1177         case ACB_ADAPTER_TYPE_B: {
1178                 struct MessageUnit_B *reg = acb->pmuB;
1179                 uint32_t ending_index, index = reg->postq_index;
1180
1181                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1182                 writel(0, &reg->post_qbuffer[ending_index]);
1183                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1184                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1185                                                  &reg->post_qbuffer[index]);
1186                 } else {
1187                         writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1188                 }
1189                 index++;
1190                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1191                 reg->postq_index = index;
1192                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1193                 }
1194                 break;
1195         case ACB_ADAPTER_TYPE_C: {
1196                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1197                 uint32_t ccb_post_stamp, arc_cdb_size;
1198
1199                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1200                 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1201                 if (acb->cdb_phyaddr_hi32) {
1202                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1203                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1204                 } else {
1205                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1206                 }
1207                 }
1208         }
1209 }
1210
1211 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1212 {
1213         struct MessageUnit_A __iomem *reg = acb->pmuA;
1214         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1215         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1216         if (!arcmsr_hba_wait_msgint_ready(acb)) {
1217                 printk(KERN_NOTICE
1218                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1219                         , acb->host->host_no);
1220         }
1221 }
1222
1223 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1224 {
1225         struct MessageUnit_B *reg = acb->pmuB;
1226         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1227         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1228
1229         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1230                 printk(KERN_NOTICE
1231                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1232                         , acb->host->host_no);
1233         }
1234 }
1235
1236 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1237 {
1238         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1239         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1240         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1241         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1242         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1243                 printk(KERN_NOTICE
1244                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1245                         , pACB->host->host_no);
1246         }
1247         return;
1248 }
1249 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1250 {
1251         switch (acb->adapter_type) {
1252         case ACB_ADAPTER_TYPE_A: {
1253                 arcmsr_stop_hba_bgrb(acb);
1254                 }
1255                 break;
1256
1257         case ACB_ADAPTER_TYPE_B: {
1258                 arcmsr_stop_hbb_bgrb(acb);
1259                 }
1260                 break;
1261         case ACB_ADAPTER_TYPE_C: {
1262                 arcmsr_stop_hbc_bgrb(acb);
1263                 }
1264         }
1265 }
1266
1267 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1268 {
1269         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1270 }
1271
1272 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1273 {
1274         switch (acb->adapter_type) {
1275         case ACB_ADAPTER_TYPE_A: {
1276                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1277                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1278                 }
1279                 break;
1280
1281         case ACB_ADAPTER_TYPE_B: {
1282                 struct MessageUnit_B *reg = acb->pmuB;
1283                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1284                 }
1285                 break;
1286         case ACB_ADAPTER_TYPE_C: {
1287                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1288                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1289                 }
1290         }
1291 }
1292
1293 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1294 {
1295         switch (acb->adapter_type) {
1296         case ACB_ADAPTER_TYPE_A: {
1297                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1298                 /*
1299                 ** push inbound doorbell tell iop, driver data write ok
1300                 ** and wait reply on next hwinterrupt for next Qbuffer post
1301                 */
1302                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1303                 }
1304                 break;
1305
1306         case ACB_ADAPTER_TYPE_B: {
1307                 struct MessageUnit_B *reg = acb->pmuB;
1308                 /*
1309                 ** push inbound doorbell tell iop, driver data write ok
1310                 ** and wait reply on next hwinterrupt for next Qbuffer post
1311                 */
1312                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1313                 }
1314                 break;
1315         case ACB_ADAPTER_TYPE_C: {
1316                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1317                 /*
1318                 ** push inbound doorbell tell iop, driver data write ok
1319                 ** and wait reply on next hwinterrupt for next Qbuffer post
1320                 */
1321                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1322                 }
1323                 break;
1324         }
1325 }
1326
1327 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1328 {
1329         struct QBUFFER __iomem *qbuffer = NULL;
1330         switch (acb->adapter_type) {
1331
1332         case ACB_ADAPTER_TYPE_A: {
1333                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1334                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1335                 }
1336                 break;
1337
1338         case ACB_ADAPTER_TYPE_B: {
1339                 struct MessageUnit_B *reg = acb->pmuB;
1340                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1341                 }
1342                 break;
1343         case ACB_ADAPTER_TYPE_C: {
1344                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1345                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1346                 }
1347         }
1348         return qbuffer;
1349 }
1350
1351 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1352 {
1353         struct QBUFFER __iomem *pqbuffer = NULL;
1354         switch (acb->adapter_type) {
1355
1356         case ACB_ADAPTER_TYPE_A: {
1357                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1358                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1359                 }
1360                 break;
1361
1362         case ACB_ADAPTER_TYPE_B: {
1363                 struct MessageUnit_B  *reg = acb->pmuB;
1364                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1365                 }
1366                 break;
1367         case ACB_ADAPTER_TYPE_C: {
1368                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1369                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1370         }
1371
1372         }
1373         return pqbuffer;
1374 }
1375
1376 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1377 {
1378         struct QBUFFER __iomem *prbuffer;
1379         struct QBUFFER *pQbuffer;
1380         uint8_t __iomem *iop_data;
1381         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1382         rqbuf_lastindex = acb->rqbuf_lastindex;
1383         rqbuf_firstindex = acb->rqbuf_firstindex;
1384         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1385         iop_data = (uint8_t __iomem *)prbuffer->data;
1386         iop_len = prbuffer->data_len;
1387         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1388
1389         if (my_empty_len >= iop_len)
1390         {
1391                 while (iop_len > 0) {
1392                         pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1393                         memcpy(pQbuffer, iop_data, 1);
1394                         rqbuf_lastindex++;
1395                         rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1396                         iop_data++;
1397                         iop_len--;
1398                 }
1399                 acb->rqbuf_lastindex = rqbuf_lastindex;
1400                 arcmsr_iop_message_read(acb);
1401         }
1402
1403         else {
1404                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1405         }
1406 }
1407
1408 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1409 {
1410         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1411         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1412                 uint8_t *pQbuffer;
1413                 struct QBUFFER __iomem *pwbuffer;
1414                 uint8_t __iomem *iop_data;
1415                 int32_t allxfer_len = 0;
1416
1417                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1418                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1419                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1420
1421                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1422                                                         (allxfer_len < 124)) {
1423                         pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1424                         memcpy(iop_data, pQbuffer, 1);
1425                         acb->wqbuf_firstindex++;
1426                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1427                         iop_data++;
1428                         allxfer_len++;
1429                 }
1430                 pwbuffer->data_len = allxfer_len;
1431
1432                 arcmsr_iop_message_wrote(acb);
1433         }
1434
1435         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1436                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1437         }
1438 }
1439
1440 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1441 {
1442         uint32_t outbound_doorbell;
1443         struct MessageUnit_A __iomem *reg = acb->pmuA;
1444         outbound_doorbell = readl(&reg->outbound_doorbell);
1445         writel(outbound_doorbell, &reg->outbound_doorbell);
1446         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1447                 arcmsr_iop2drv_data_wrote_handle(acb);
1448         }
1449
1450         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1451                 arcmsr_iop2drv_data_read_handle(acb);
1452         }
1453 }
1454 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1455 {
1456         uint32_t outbound_doorbell;
1457         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1458         /*
1459         *******************************************************************
1460         **  Maybe here we need to check wrqbuffer_lock is lock or not
1461         **  DOORBELL: din! don!
1462         **  check if there are any mail need to pack from firmware
1463         *******************************************************************
1464         */
1465         outbound_doorbell = readl(&reg->outbound_doorbell);
1466         writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1467         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1468                 arcmsr_iop2drv_data_wrote_handle(pACB);
1469         }
1470         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1471                 arcmsr_iop2drv_data_read_handle(pACB);
1472         }
1473         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1474                 arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
1475         }
1476         return;
1477 }
1478 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1479 {
1480         uint32_t flag_ccb;
1481         struct MessageUnit_A __iomem *reg = acb->pmuA;
1482         struct ARCMSR_CDB *pARCMSR_CDB;
1483         struct CommandControlBlock *pCCB;
1484         bool error;
1485         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1486                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1487                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1488                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1489                 arcmsr_drain_donequeue(acb, pCCB, error);
1490         }
1491 }
1492 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1493 {
1494         uint32_t index;
1495         uint32_t flag_ccb;
1496         struct MessageUnit_B *reg = acb->pmuB;
1497         struct ARCMSR_CDB *pARCMSR_CDB;
1498         struct CommandControlBlock *pCCB;
1499         bool error;
1500         index = reg->doneq_index;
1501         while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1502                 writel(0, &reg->done_qbuffer[index]);
1503                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1504                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1505                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1506                 arcmsr_drain_donequeue(acb, pCCB, error);
1507                 index++;
1508                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1509                 reg->doneq_index = index;
1510         }
1511 }
1512
1513 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1514 {
1515         struct MessageUnit_C *phbcmu;
1516         struct ARCMSR_CDB *arcmsr_cdb;
1517         struct CommandControlBlock *ccb;
1518         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1519         int error;
1520
1521         phbcmu = (struct MessageUnit_C *)acb->pmuC;
1522         /* areca cdb command done */
1523         /* Use correct offset and size for syncing */
1524
1525         while (readl(&phbcmu->host_int_status) &
1526         ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1527         /* check if command done with no error*/
1528         flag_ccb = readl(&phbcmu->outbound_queueport_low);
1529         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1530         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1531         ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1532         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1533         /* check if command done with no error */
1534         arcmsr_drain_donequeue(acb, ccb, error);
1535         if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1536                 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1537                 break;
1538         }
1539         throttling++;
1540         }
1541 }
1542 /*
1543 **********************************************************************************
1544 ** Handle a message interrupt
1545 **
1546 ** The only message interrupt we expect is in response to a query for the current adapter config.
1547 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1548 **********************************************************************************
1549 */
1550 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1551 {
1552         struct MessageUnit_A *reg  = acb->pmuA;
1553         /*clear interrupt and message state*/
1554         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1555         schedule_work(&acb->arcmsr_do_message_isr_bh);
1556 }
1557 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1558 {
1559         struct MessageUnit_B *reg  = acb->pmuB;
1560
1561         /*clear interrupt and message state*/
1562         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1563         schedule_work(&acb->arcmsr_do_message_isr_bh);
1564 }
1565 /*
1566 **********************************************************************************
1567 ** Handle a message interrupt
1568 **
1569 ** The only message interrupt we expect is in response to a query for the
1570 ** current adapter config.
1571 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1572 **********************************************************************************
1573 */
1574 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1575 {
1576         struct MessageUnit_C *reg  = acb->pmuC;
1577         /*clear interrupt and message state*/
1578         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1579         schedule_work(&acb->arcmsr_do_message_isr_bh);
1580 }
1581
1582 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1583 {
1584         uint32_t outbound_intstatus;
1585         struct MessageUnit_A __iomem *reg = acb->pmuA;
1586         outbound_intstatus = readl(&reg->outbound_intstatus) &
1587                 acb->outbound_int_enable;
1588         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1589                 return 1;
1590         }
1591         writel(outbound_intstatus, &reg->outbound_intstatus);
1592         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1593                 arcmsr_hba_doorbell_isr(acb);
1594         }
1595         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1596                 arcmsr_hba_postqueue_isr(acb);
1597         }
1598         if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)        {
1599                 /* messenger of "driver to iop commands" */
1600                 arcmsr_hba_message_isr(acb);
1601         }
1602         return 0;
1603 }
1604
1605 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1606 {
1607         uint32_t outbound_doorbell;
1608         struct MessageUnit_B *reg = acb->pmuB;
1609         outbound_doorbell = readl(reg->iop2drv_doorbell) &
1610                                 acb->outbound_int_enable;
1611         if (!outbound_doorbell)
1612                 return 1;
1613
1614         writel(~outbound_doorbell, reg->iop2drv_doorbell);
1615         /*in case the last action of doorbell interrupt clearance is cached,
1616         this action can push HW to write down the clear bit*/
1617         readl(reg->iop2drv_doorbell);
1618         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1619         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1620                 arcmsr_iop2drv_data_wrote_handle(acb);
1621         }
1622         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1623                 arcmsr_iop2drv_data_read_handle(acb);
1624         }
1625         if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1626                 arcmsr_hbb_postqueue_isr(acb);
1627         }
1628         if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1629                 /* messenger of "driver to iop commands" */
1630                 arcmsr_hbb_message_isr(acb);
1631         }
1632         return 0;
1633 }
1634
1635 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1636 {
1637         uint32_t host_interrupt_status;
1638         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1639         /*
1640         *********************************************
1641         **   check outbound intstatus
1642         *********************************************
1643         */
1644         host_interrupt_status = readl(&phbcmu->host_int_status);
1645         if (!host_interrupt_status) {
1646                 /*it must be share irq*/
1647                 return 1;
1648         }
1649         /* MU ioctl transfer doorbell interrupts*/
1650         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1651                 arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
1652         }
1653         /* MU post queue interrupts*/
1654         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1655                 arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
1656         }
1657         return 0;
1658 }
1659 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1660 {
1661         switch (acb->adapter_type) {
1662         case ACB_ADAPTER_TYPE_A: {
1663                 if (arcmsr_handle_hba_isr(acb)) {
1664                         return IRQ_NONE;
1665                 }
1666                 }
1667                 break;
1668
1669         case ACB_ADAPTER_TYPE_B: {
1670                 if (arcmsr_handle_hbb_isr(acb)) {
1671                         return IRQ_NONE;
1672                 }
1673                 }
1674                 break;
1675          case ACB_ADAPTER_TYPE_C: {
1676                 if (arcmsr_handle_hbc_isr(acb)) {
1677                         return IRQ_NONE;
1678                 }
1679                 }
1680         }
1681         return IRQ_HANDLED;
1682 }
1683
1684 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1685 {
1686         if (acb) {
1687                 /* stop adapter background rebuild */
1688                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1689                         uint32_t intmask_org;
1690                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1691                         intmask_org = arcmsr_disable_outbound_ints(acb);
1692                         arcmsr_stop_adapter_bgrb(acb);
1693                         arcmsr_flush_adapter_cache(acb);
1694                         arcmsr_enable_outbound_ints(acb, intmask_org);
1695                 }
1696         }
1697 }
1698
1699 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1700 {
1701         int32_t wqbuf_firstindex, wqbuf_lastindex;
1702         uint8_t *pQbuffer;
1703         struct QBUFFER __iomem *pwbuffer;
1704         uint8_t __iomem *iop_data;
1705         int32_t allxfer_len = 0;
1706         pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1707         iop_data = (uint8_t __iomem *)pwbuffer->data;
1708         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1709                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1710                 wqbuf_firstindex = acb->wqbuf_firstindex;
1711                 wqbuf_lastindex = acb->wqbuf_lastindex;
1712                 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1713                         pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1714                         memcpy(iop_data, pQbuffer, 1);
1715                         wqbuf_firstindex++;
1716                         wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1717                         iop_data++;
1718                         allxfer_len++;
1719                 }
1720                 acb->wqbuf_firstindex = wqbuf_firstindex;
1721                 pwbuffer->data_len = allxfer_len;
1722                 arcmsr_iop_message_wrote(acb);
1723         }
1724 }
1725
1726 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1727                                         struct scsi_cmnd *cmd)
1728 {
1729         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1730         int retvalue = 0, transfer_len = 0;
1731         char *buffer;
1732         struct scatterlist *sg;
1733         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1734                                                 (uint32_t ) cmd->cmnd[6] << 16 |
1735                                                 (uint32_t ) cmd->cmnd[7] << 8  |
1736                                                 (uint32_t ) cmd->cmnd[8];
1737                                                 /* 4 bytes: Areca io control code */
1738         sg = scsi_sglist(cmd);
1739         buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1740         if (scsi_sg_count(cmd) > 1) {
1741                 retvalue = ARCMSR_MESSAGE_FAIL;
1742                 goto message_out;
1743         }
1744         transfer_len += sg->length;
1745
1746         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1747                 retvalue = ARCMSR_MESSAGE_FAIL;
1748                 goto message_out;
1749         }
1750         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1751         switch(controlcode) {
1752
1753         case ARCMSR_MESSAGE_READ_RQBUFFER: {
1754                 unsigned char *ver_addr;
1755                 uint8_t *pQbuffer, *ptmpQbuffer;
1756                 int32_t allxfer_len = 0;
1757
1758                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1759                 if (!ver_addr) {
1760                         retvalue = ARCMSR_MESSAGE_FAIL;
1761                         goto message_out;
1762                 }
1763
1764                 ptmpQbuffer = ver_addr;
1765                 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1766                         && (allxfer_len < 1031)) {
1767                         pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1768                         memcpy(ptmpQbuffer, pQbuffer, 1);
1769                         acb->rqbuf_firstindex++;
1770                         acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1771                         ptmpQbuffer++;
1772                         allxfer_len++;
1773                 }
1774                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1775
1776                         struct QBUFFER __iomem *prbuffer;
1777                         uint8_t __iomem *iop_data;
1778                         int32_t iop_len;
1779
1780                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1781                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1782                         iop_data = prbuffer->data;
1783                         iop_len = readl(&prbuffer->data_len);
1784                         while (iop_len > 0) {
1785                                 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1786                                 acb->rqbuf_lastindex++;
1787                                 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1788                                 iop_data++;
1789                                 iop_len--;
1790                         }
1791                         arcmsr_iop_message_read(acb);
1792                 }
1793                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1794                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1795                 if(acb->fw_flag == FW_DEADLOCK) {
1796                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1797                 }else{
1798                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1799                 }
1800                 kfree(ver_addr);
1801                 }
1802                 break;
1803
1804         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1805                 unsigned char *ver_addr;
1806                 uint32_t user_len;
1807                 int32_t my_empty_len, wqbuf_firstindex, wqbuf_lastindex;
1808                 uint8_t *pQbuffer, *ptmpuserbuffer;
1809
1810                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1811                 if (!ver_addr) {
1812                         retvalue = ARCMSR_MESSAGE_FAIL;
1813                         goto message_out;
1814                 }
1815                 if(acb->fw_flag == FW_DEADLOCK) {
1816                         pcmdmessagefld->cmdmessage.ReturnCode =
1817                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1818                 }else{
1819                         pcmdmessagefld->cmdmessage.ReturnCode =
1820                         ARCMSR_MESSAGE_RETURNCODE_OK;
1821                 }
1822                 ptmpuserbuffer = ver_addr;
1823                 user_len = pcmdmessagefld->cmdmessage.Length;
1824                 if (user_len > 1032) {
1825                         retvalue = ARCMSR_MESSAGE_FAIL;
1826                         kfree(ver_addr);
1827                         goto message_out;
1828                 }
1829                 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1830                 wqbuf_lastindex = acb->wqbuf_lastindex;
1831                 wqbuf_firstindex = acb->wqbuf_firstindex;
1832                 if (wqbuf_lastindex != wqbuf_firstindex) {
1833                         struct SENSE_DATA *sensebuffer =
1834                                 (struct SENSE_DATA *)cmd->sense_buffer;
1835                         arcmsr_post_ioctldata2iop(acb);
1836                         /* has error report sensedata */
1837                         sensebuffer->ErrorCode = 0x70;
1838                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
1839                         sensebuffer->AdditionalSenseLength = 0x0A;
1840                         sensebuffer->AdditionalSenseCode = 0x20;
1841                         sensebuffer->Valid = 1;
1842                         retvalue = ARCMSR_MESSAGE_FAIL;
1843                 } else {
1844                         my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1845                                 &(ARCMSR_MAX_QBUFFER - 1);
1846                         if (my_empty_len >= user_len) {
1847                                 while (user_len > 0) {
1848                                         pQbuffer =
1849                                         &acb->wqbuffer[acb->wqbuf_lastindex];
1850                                         memcpy(pQbuffer, ptmpuserbuffer, 1);
1851                                         acb->wqbuf_lastindex++;
1852                                         acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1853                                         ptmpuserbuffer++;
1854                                         user_len--;
1855                                 }
1856                                 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1857                                         acb->acb_flags &=
1858                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1859                                         arcmsr_post_ioctldata2iop(acb);
1860                                 }
1861                         } else {
1862                                 /* has error report sensedata */
1863                                 struct SENSE_DATA *sensebuffer =
1864                                         (struct SENSE_DATA *)cmd->sense_buffer;
1865                                 sensebuffer->ErrorCode = 0x70;
1866                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1867                                 sensebuffer->AdditionalSenseLength = 0x0A;
1868                                 sensebuffer->AdditionalSenseCode = 0x20;
1869                                 sensebuffer->Valid = 1;
1870                                 retvalue = ARCMSR_MESSAGE_FAIL;
1871                         }
1872                         }
1873                         kfree(ver_addr);
1874                 }
1875                 break;
1876
1877         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1878                 uint8_t *pQbuffer = acb->rqbuffer;
1879                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1880                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1881                         arcmsr_iop_message_read(acb);
1882                 }
1883                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1884                 acb->rqbuf_firstindex = 0;
1885                 acb->rqbuf_lastindex = 0;
1886                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1887                 if(acb->fw_flag == FW_DEADLOCK) {
1888                         pcmdmessagefld->cmdmessage.ReturnCode =
1889                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1890                 }else{
1891                         pcmdmessagefld->cmdmessage.ReturnCode =
1892                         ARCMSR_MESSAGE_RETURNCODE_OK;
1893                 }
1894                 }
1895                 break;
1896
1897         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1898                 uint8_t *pQbuffer = acb->wqbuffer;
1899                 if(acb->fw_flag == FW_DEADLOCK) {
1900                         pcmdmessagefld->cmdmessage.ReturnCode =
1901                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1902                 }else{
1903                         pcmdmessagefld->cmdmessage.ReturnCode =
1904                         ARCMSR_MESSAGE_RETURNCODE_OK;
1905                 }
1906
1907                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1908                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1909                         arcmsr_iop_message_read(acb);
1910                 }
1911                 acb->acb_flags |=
1912                         (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1913                                 ACB_F_MESSAGE_WQBUFFER_READED);
1914                 acb->wqbuf_firstindex = 0;
1915                 acb->wqbuf_lastindex = 0;
1916                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1917                 }
1918                 break;
1919
1920         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1921                 uint8_t *pQbuffer;
1922
1923                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1924                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1925                         arcmsr_iop_message_read(acb);
1926                 }
1927                 acb->acb_flags |=
1928                         (ACB_F_MESSAGE_WQBUFFER_CLEARED
1929                         | ACB_F_MESSAGE_RQBUFFER_CLEARED
1930                         | ACB_F_MESSAGE_WQBUFFER_READED);
1931                 acb->rqbuf_firstindex = 0;
1932                 acb->rqbuf_lastindex = 0;
1933                 acb->wqbuf_firstindex = 0;
1934                 acb->wqbuf_lastindex = 0;
1935                 pQbuffer = acb->rqbuffer;
1936                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1937                 pQbuffer = acb->wqbuffer;
1938                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1939                 if(acb->fw_flag == FW_DEADLOCK) {
1940                         pcmdmessagefld->cmdmessage.ReturnCode =
1941                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1942                 }else{
1943                         pcmdmessagefld->cmdmessage.ReturnCode =
1944                         ARCMSR_MESSAGE_RETURNCODE_OK;
1945                 }
1946                 }
1947                 break;
1948
1949         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1950                 if(acb->fw_flag == FW_DEADLOCK) {
1951                         pcmdmessagefld->cmdmessage.ReturnCode =
1952                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1953                 }else{
1954                         pcmdmessagefld->cmdmessage.ReturnCode =
1955                         ARCMSR_MESSAGE_RETURNCODE_3F;
1956                 }
1957                 break;
1958                 }
1959         case ARCMSR_MESSAGE_SAY_HELLO: {
1960                 int8_t *hello_string = "Hello! I am ARCMSR";
1961                 if(acb->fw_flag == FW_DEADLOCK) {
1962                         pcmdmessagefld->cmdmessage.ReturnCode =
1963                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1964                 }else{
1965                         pcmdmessagefld->cmdmessage.ReturnCode =
1966                         ARCMSR_MESSAGE_RETURNCODE_OK;
1967                 }
1968                 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1969                         , (int16_t)strlen(hello_string));
1970                 }
1971                 break;
1972
1973         case ARCMSR_MESSAGE_SAY_GOODBYE:
1974                 if(acb->fw_flag == FW_DEADLOCK) {
1975                         pcmdmessagefld->cmdmessage.ReturnCode =
1976                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1977                 }
1978                 arcmsr_iop_parking(acb);
1979                 break;
1980
1981         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1982                 if(acb->fw_flag == FW_DEADLOCK) {
1983                         pcmdmessagefld->cmdmessage.ReturnCode =
1984                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1985                 }
1986                 arcmsr_flush_adapter_cache(acb);
1987                 break;
1988
1989         default:
1990                 retvalue = ARCMSR_MESSAGE_FAIL;
1991         }
1992         message_out:
1993         sg = scsi_sglist(cmd);
1994         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1995         return retvalue;
1996 }
1997
1998 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1999 {
2000         struct list_head *head = &acb->ccb_free_list;
2001         struct CommandControlBlock *ccb = NULL;
2002         unsigned long flags;
2003         spin_lock_irqsave(&acb->ccblist_lock, flags);
2004         if (!list_empty(head)) {
2005                 ccb = list_entry(head->next, struct CommandControlBlock, list);
2006                 list_del_init(&ccb->list);
2007         }else{
2008                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2009                 return 0;
2010         }
2011         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2012         return ccb;
2013 }
2014
2015 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2016                 struct scsi_cmnd *cmd)
2017 {
2018         switch (cmd->cmnd[0]) {
2019         case INQUIRY: {
2020                 unsigned char inqdata[36];
2021                 char *buffer;
2022                 struct scatterlist *sg;
2023
2024                 if (cmd->device->lun) {
2025                         cmd->result = (DID_TIME_OUT << 16);
2026                         cmd->scsi_done(cmd);
2027                         return;
2028                 }
2029                 inqdata[0] = TYPE_PROCESSOR;
2030                 /* Periph Qualifier & Periph Dev Type */
2031                 inqdata[1] = 0;
2032                 /* rem media bit & Dev Type Modifier */
2033                 inqdata[2] = 0;
2034                 /* ISO, ECMA, & ANSI versions */
2035                 inqdata[4] = 31;
2036                 /* length of additional data */
2037                 strncpy(&inqdata[8], "Areca   ", 8);
2038                 /* Vendor Identification */
2039                 strncpy(&inqdata[16], "RAID controller ", 16);
2040                 /* Product Identification */
2041                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2042
2043                 sg = scsi_sglist(cmd);
2044                 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
2045
2046                 memcpy(buffer, inqdata, sizeof(inqdata));
2047                 sg = scsi_sglist(cmd);
2048                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2049
2050                 cmd->scsi_done(cmd);
2051         }
2052         break;
2053         case WRITE_BUFFER:
2054         case READ_BUFFER: {
2055                 if (arcmsr_iop_message_xfer(acb, cmd))
2056                         cmd->result = (DID_ERROR << 16);
2057                 cmd->scsi_done(cmd);
2058         }
2059         break;
2060         default:
2061                 cmd->scsi_done(cmd);
2062         }
2063 }
2064
2065 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2066         void (* done)(struct scsi_cmnd *))
2067 {
2068         struct Scsi_Host *host = cmd->device->host;
2069         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2070         struct CommandControlBlock *ccb;
2071         int target = cmd->device->id;
2072         cmd->scsi_done = done;
2073         cmd->host_scribble = NULL;
2074         cmd->result = 0;
2075         if (target == 16) {
2076                 /* virtual device for iop message transfer */
2077                 arcmsr_handle_virtual_command(acb, cmd);
2078                 return 0;
2079         }
2080         if (atomic_read(&acb->ccboutstandingcount) >=
2081                         ARCMSR_MAX_OUTSTANDING_CMD)
2082                 return SCSI_MLQUEUE_HOST_BUSY;
2083         ccb = arcmsr_get_freeccb(acb);
2084         if (!ccb)
2085                 return SCSI_MLQUEUE_HOST_BUSY;
2086         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2087                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2088                 cmd->scsi_done(cmd);
2089                 return 0;
2090         }
2091         arcmsr_post_ccb(acb, ccb);
2092         return 0;
2093 }
2094
2095 static DEF_SCSI_QCMD(arcmsr_queue_command)
2096
2097 static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2098 {
2099         struct MessageUnit_A __iomem *reg = acb->pmuA;
2100         char *acb_firm_model = acb->firm_model;
2101         char *acb_firm_version = acb->firm_version;
2102         char *acb_device_map = acb->device_map;
2103         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2104         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2105         char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2106         int count;
2107         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2108         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2109                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2110                         miscellaneous data' timeout \n", acb->host->host_no);
2111                 return false;
2112         }
2113         count = 8;
2114         while (count){
2115                 *acb_firm_model = readb(iop_firm_model);
2116                 acb_firm_model++;
2117                 iop_firm_model++;
2118                 count--;
2119         }
2120
2121         count = 16;
2122         while (count){
2123                 *acb_firm_version = readb(iop_firm_version);
2124                 acb_firm_version++;
2125                 iop_firm_version++;
2126                 count--;
2127         }
2128
2129         count=16;
2130         while(count){
2131                 *acb_device_map = readb(iop_device_map);
2132                 acb_device_map++;
2133                 iop_device_map++;
2134                 count--;
2135         }
2136         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2137                 acb->host->host_no,
2138                 acb->firm_version,
2139                 acb->firm_model);
2140         acb->signature = readl(&reg->message_rwbuffer[0]);
2141         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2142         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2143         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2144         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2145         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2146         return true;
2147 }
2148 static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2149 {
2150         struct MessageUnit_B *reg = acb->pmuB;
2151         struct pci_dev *pdev = acb->pdev;
2152         void *dma_coherent;
2153         dma_addr_t dma_coherent_handle;
2154         char *acb_firm_model = acb->firm_model;
2155         char *acb_firm_version = acb->firm_version;
2156         char *acb_device_map = acb->device_map;
2157         char __iomem *iop_firm_model;
2158         /*firm_model,15,60-67*/
2159         char __iomem *iop_firm_version;
2160         /*firm_version,17,68-83*/
2161         char __iomem *iop_device_map;
2162         /*firm_version,21,84-99*/
2163         int count;
2164         dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2165         if (!dma_coherent){
2166                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2167                 return false;
2168         }
2169         acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2170         reg = (struct MessageUnit_B *)dma_coherent;
2171         acb->pmuB = reg;
2172         reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2173         reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2174         reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2175         reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2176         reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2177         reg->message_rbuffer =  (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2178         reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2179         iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2180         iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2181         iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2182
2183         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2184         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2185                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2186                         miscellaneous data' timeout \n", acb->host->host_no);
2187                 return false;
2188         }
2189         count = 8;
2190         while (count){
2191                 *acb_firm_model = readb(iop_firm_model);
2192                 acb_firm_model++;
2193                 iop_firm_model++;
2194                 count--;
2195         }
2196         count = 16;
2197         while (count){
2198                 *acb_firm_version = readb(iop_firm_version);
2199                 acb_firm_version++;
2200                 iop_firm_version++;
2201                 count--;
2202         }
2203
2204         count = 16;
2205         while(count){
2206                 *acb_device_map = readb(iop_device_map);
2207                 acb_device_map++;
2208                 iop_device_map++;
2209                 count--;
2210         }
2211
2212         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2213                 acb->host->host_no,
2214                 acb->firm_version,
2215                 acb->firm_model);
2216
2217         acb->signature = readl(&reg->message_rwbuffer[1]);
2218         /*firm_signature,1,00-03*/
2219         acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2220         /*firm_request_len,1,04-07*/
2221         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2222         /*firm_numbers_queue,2,08-11*/
2223         acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2224         /*firm_sdram_size,3,12-15*/
2225         acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2226         /*firm_ide_channels,4,16-19*/
2227         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2228         /*firm_ide_channels,4,16-19*/
2229         return true;
2230 }
2231
2232 static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2233 {
2234         uint32_t intmask_org, Index, firmware_state = 0;
2235         struct MessageUnit_C *reg = pACB->pmuC;
2236         char *acb_firm_model = pACB->firm_model;
2237         char *acb_firm_version = pACB->firm_version;
2238         char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2239         char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2240         int count;
2241         /* disable all outbound interrupt */
2242         intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2243         writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2244         /* wait firmware ready */
2245         do {
2246                 firmware_state = readl(&reg->outbound_msgaddr1);
2247         } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2248         /* post "get config" instruction */
2249         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2250         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2251         /* wait message ready */
2252         for (Index = 0; Index < 2000; Index++) {
2253                 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2254                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2255                         break;
2256                 }
2257                 udelay(10);
2258         } /*max 1 seconds*/
2259         if (Index >= 2000) {
2260                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2261                         miscellaneous data' timeout \n", pACB->host->host_no);
2262                 return false;
2263         }
2264         count = 8;
2265         while (count) {
2266                 *acb_firm_model = readb(iop_firm_model);
2267                 acb_firm_model++;
2268                 iop_firm_model++;
2269                 count--;
2270         }
2271         count = 16;
2272         while (count) {
2273                 *acb_firm_version = readb(iop_firm_version);
2274                 acb_firm_version++;
2275                 iop_firm_version++;
2276                 count--;
2277         }
2278         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2279                 pACB->host->host_no,
2280                 pACB->firm_version,
2281                 pACB->firm_model);
2282         pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2283         pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2284         pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2285         pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2286         pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2287         /*all interrupt service will be enable at arcmsr_iop_init*/
2288         return true;
2289 }
2290 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2291 {
2292         if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2293                 return arcmsr_get_hba_config(acb);
2294         else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2295                 return arcmsr_get_hbb_config(acb);
2296         else
2297                 return arcmsr_get_hbc_config(acb);
2298 }
2299
2300 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2301         struct CommandControlBlock *poll_ccb)
2302 {
2303         struct MessageUnit_A __iomem *reg = acb->pmuA;
2304         struct CommandControlBlock *ccb;
2305         struct ARCMSR_CDB *arcmsr_cdb;
2306         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2307         int rtn;
2308         bool error;
2309         polling_hba_ccb_retry:
2310         poll_count++;
2311         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2312         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2313         while (1) {
2314                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2315                         if (poll_ccb_done){
2316                                 rtn = SUCCESS;
2317                                 break;
2318                         }else {
2319                                 msleep(25);
2320                                 if (poll_count > 100){
2321                                         rtn = FAILED;
2322                                         break;
2323                                 }
2324                                 goto polling_hba_ccb_retry;
2325                         }
2326                 }
2327                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2328                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2329                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2330                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2331                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2332                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2333                                         " poll command abort successfully \n"
2334                                         , acb->host->host_no
2335                                         , ccb->pcmd->device->id
2336                                         , ccb->pcmd->device->lun
2337                                         , ccb);
2338                                 ccb->pcmd->result = DID_ABORT << 16;
2339                                 arcmsr_ccb_complete(ccb);
2340                                 continue;
2341                         }
2342                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2343                                 " command done ccb = '0x%p'"
2344                                 "ccboutstandingcount = %d \n"
2345                                 , acb->host->host_no
2346                                 , ccb
2347                                 , atomic_read(&acb->ccboutstandingcount));
2348                         continue;
2349                 }
2350                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2351                 arcmsr_report_ccb_state(acb, ccb, error);
2352         }
2353         return rtn;
2354 }
2355
2356 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2357                                         struct CommandControlBlock *poll_ccb)
2358 {
2359         struct MessageUnit_B *reg = acb->pmuB;
2360         struct ARCMSR_CDB *arcmsr_cdb;
2361         struct CommandControlBlock *ccb;
2362         uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2363         int index, rtn;
2364         bool error;
2365         polling_hbb_ccb_retry:
2366
2367         poll_count++;
2368         /* clear doorbell interrupt */
2369         writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2370         while(1){
2371                 index = reg->doneq_index;
2372                 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2373                         if (poll_ccb_done){
2374                                 rtn = SUCCESS;
2375                                 break;
2376                         }else {
2377                                 msleep(25);
2378                                 if (poll_count > 100){
2379                                         rtn = FAILED;
2380                                         break;
2381                                 }
2382                                 goto polling_hbb_ccb_retry;
2383                         }
2384                 }
2385                 writel(0, &reg->done_qbuffer[index]);
2386                 index++;
2387                 /*if last index number set it to 0 */
2388                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2389                 reg->doneq_index = index;
2390                 /* check if command done with no error*/
2391                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2392                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2393                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2394                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2395                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2396                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2397                                         " poll command abort successfully \n"
2398                                         ,acb->host->host_no
2399                                         ,ccb->pcmd->device->id
2400                                         ,ccb->pcmd->device->lun
2401                                         ,ccb);
2402                                 ccb->pcmd->result = DID_ABORT << 16;
2403                                 arcmsr_ccb_complete(ccb);
2404                                 continue;
2405                         }
2406                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2407                                 " command done ccb = '0x%p'"
2408                                 "ccboutstandingcount = %d \n"
2409                                 , acb->host->host_no
2410                                 , ccb
2411                                 , atomic_read(&acb->ccboutstandingcount));
2412                         continue;
2413                 }
2414                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2415                 arcmsr_report_ccb_state(acb, ccb, error);
2416         }
2417         return rtn;
2418 }
2419
2420 static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2421 {
2422         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2423         uint32_t flag_ccb, ccb_cdb_phy;
2424         struct ARCMSR_CDB *arcmsr_cdb;
2425         bool error;
2426         struct CommandControlBlock *pCCB;
2427         uint32_t poll_ccb_done = 0, poll_count = 0;
2428         int rtn;
2429 polling_hbc_ccb_retry:
2430         poll_count++;
2431         while (1) {
2432                 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2433                         if (poll_ccb_done) {
2434                                 rtn = SUCCESS;
2435                                 break;
2436                         } else {
2437                                 msleep(25);
2438                                 if (poll_count > 100) {
2439                                         rtn = FAILED;
2440                                         break;
2441                                 }
2442                                 goto polling_hbc_ccb_retry;
2443                         }
2444                 }
2445                 flag_ccb = readl(&reg->outbound_queueport_low);
2446                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2447                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2448                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2449                 poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2450                 /* check ifcommand done with no error*/
2451                 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2452                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2453                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2454                                         " poll command abort successfully \n"
2455                                         , acb->host->host_no
2456                                         , pCCB->pcmd->device->id
2457                                         , pCCB->pcmd->device->lun
2458                                         , pCCB);
2459                                         pCCB->pcmd->result = DID_ABORT << 16;
2460                                         arcmsr_ccb_complete(pCCB);
2461                                 continue;
2462                         }
2463                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2464                                 " command done ccb = '0x%p'"
2465                                 "ccboutstandingcount = %d \n"
2466                                 , acb->host->host_no
2467                                 , pCCB
2468                                 , atomic_read(&acb->ccboutstandingcount));
2469                         continue;
2470                 }
2471                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2472                 arcmsr_report_ccb_state(acb, pCCB, error);
2473         }
2474         return rtn;
2475 }
2476 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2477                                         struct CommandControlBlock *poll_ccb)
2478 {
2479         int rtn = 0;
2480         switch (acb->adapter_type) {
2481
2482         case ACB_ADAPTER_TYPE_A: {
2483                 rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2484                 }
2485                 break;
2486
2487         case ACB_ADAPTER_TYPE_B: {
2488                 rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2489                 }
2490                 break;
2491         case ACB_ADAPTER_TYPE_C: {
2492                 rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2493                 }
2494         }
2495         return rtn;
2496 }
2497
2498 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2499 {
2500         uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2501         dma_addr_t dma_coherent_handle;
2502         /*
2503         ********************************************************************
2504         ** here we need to tell iop 331 our freeccb.HighPart
2505         ** if freeccb.HighPart is not zero
2506         ********************************************************************
2507         */
2508         dma_coherent_handle = acb->dma_coherent_handle;
2509         cdb_phyaddr = (uint32_t)(dma_coherent_handle);
2510         cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
2511         acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2512         /*
2513         ***********************************************************************
2514         **    if adapter type B, set window of "post command Q"
2515         ***********************************************************************
2516         */
2517         switch (acb->adapter_type) {
2518
2519         case ACB_ADAPTER_TYPE_A: {
2520                 if (cdb_phyaddr_hi32 != 0) {
2521                         struct MessageUnit_A __iomem *reg = acb->pmuA;
2522                         uint32_t intmask_org;
2523                         intmask_org = arcmsr_disable_outbound_ints(acb);
2524                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2525                                                 &reg->message_rwbuffer[0]);
2526                         writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2527                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2528                                                         &reg->inbound_msgaddr0);
2529                         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2530                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2531                                 part physical address timeout\n",
2532                                 acb->host->host_no);
2533                                 return 1;
2534                         }
2535                         arcmsr_enable_outbound_ints(acb, intmask_org);
2536                 }
2537                 }
2538                 break;
2539
2540         case ACB_ADAPTER_TYPE_B: {
2541                 unsigned long post_queue_phyaddr;
2542                 uint32_t __iomem *rwbuffer;
2543
2544                 struct MessageUnit_B *reg = acb->pmuB;
2545                 uint32_t intmask_org;
2546                 intmask_org = arcmsr_disable_outbound_ints(acb);
2547                 reg->postq_index = 0;
2548                 reg->doneq_index = 0;
2549                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2550                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2551                         printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2552                                 acb->host->host_no);
2553                         return 1;
2554                 }
2555                 post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2556                 rwbuffer = reg->message_rwbuffer;
2557                 /* driver "set config" signature */
2558                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2559                 /* normal should be zero */
2560                 writel(cdb_phyaddr_hi32, rwbuffer++);
2561                 /* postQ size (256 + 8)*4        */
2562                 writel(post_queue_phyaddr, rwbuffer++);
2563                 /* doneQ size (256 + 8)*4        */
2564                 writel(post_queue_phyaddr + 1056, rwbuffer++);
2565                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
2566                 writel(1056, rwbuffer);
2567
2568                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2569                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2570                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2571                         timeout \n",acb->host->host_no);
2572                         return 1;
2573                 }
2574                 arcmsr_hbb_enable_driver_mode(acb);
2575                 arcmsr_enable_outbound_ints(acb, intmask_org);
2576                 }
2577                 break;
2578         case ACB_ADAPTER_TYPE_C: {
2579                 if (cdb_phyaddr_hi32 != 0) {
2580                         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2581
2582                         printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
2583                                         acb->adapter_index, cdb_phyaddr_hi32);
2584                         writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2585                         writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2586                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2587                         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2588                         if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2589                                 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2590                                 timeout \n", acb->host->host_no);
2591                                 return 1;
2592                         }
2593                 }
2594                 }
2595         }
2596         return 0;
2597 }
2598
2599 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2600 {
2601         uint32_t firmware_state = 0;
2602         switch (acb->adapter_type) {
2603
2604         case ACB_ADAPTER_TYPE_A: {
2605                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2606                 do {
2607                         firmware_state = readl(&reg->outbound_msgaddr1);
2608                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2609                 }
2610                 break;
2611
2612         case ACB_ADAPTER_TYPE_B: {
2613                 struct MessageUnit_B *reg = acb->pmuB;
2614                 do {
2615                         firmware_state = readl(reg->iop2drv_doorbell);
2616                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2617                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2618                 }
2619                 break;
2620         case ACB_ADAPTER_TYPE_C: {
2621                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2622                 do {
2623                         firmware_state = readl(&reg->outbound_msgaddr1);
2624                 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2625                 }
2626         }
2627 }
2628
2629 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2630 {
2631         struct MessageUnit_A __iomem *reg = acb->pmuA;
2632         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2633                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2634                 return;
2635         } else {
2636                 acb->fw_flag = FW_NORMAL;
2637                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2638                         atomic_set(&acb->rq_map_token, 16);
2639                 }
2640                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2641                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2642                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2643                         return;
2644                 }
2645                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2646                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2647         }
2648         return;
2649 }
2650
2651 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2652 {
2653         struct MessageUnit_B __iomem *reg = acb->pmuB;
2654         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2655                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2656                 return;
2657         } else {
2658                 acb->fw_flag = FW_NORMAL;
2659                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2660                         atomic_set(&acb->rq_map_token, 16);
2661                 }
2662                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2663                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2664                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2665                         return;
2666                 }
2667                 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2668                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2669         }
2670         return;
2671 }
2672
2673 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2674 {
2675         struct MessageUnit_C __iomem *reg = acb->pmuC;
2676         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
2677                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2678                 return;
2679         } else {
2680                 acb->fw_flag = FW_NORMAL;
2681                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2682                         atomic_set(&acb->rq_map_token, 16);
2683                 }
2684                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2685                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2686                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2687                         return;
2688                 }
2689                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2690                 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2691                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2692         }
2693         return;
2694 }
2695
2696 static void arcmsr_request_device_map(unsigned long pacb)
2697 {
2698         struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2699         switch (acb->adapter_type) {
2700                 case ACB_ADAPTER_TYPE_A: {
2701                         arcmsr_request_hba_device_map(acb);
2702                 }
2703                 break;
2704                 case ACB_ADAPTER_TYPE_B: {
2705                         arcmsr_request_hbb_device_map(acb);
2706                 }
2707                 break;
2708                 case ACB_ADAPTER_TYPE_C: {
2709                         arcmsr_request_hbc_device_map(acb);
2710                 }
2711         }
2712 }
2713
2714 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2715 {
2716         struct MessageUnit_A __iomem *reg = acb->pmuA;
2717         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2718         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2719         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2720                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2721                                 rebulid' timeout \n", acb->host->host_no);
2722         }
2723 }
2724
2725 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2726 {
2727         struct MessageUnit_B *reg = acb->pmuB;
2728         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2729         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2730         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2731                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2732                                 rebulid' timeout \n",acb->host->host_no);
2733         }
2734 }
2735
2736 static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2737 {
2738         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2739         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2740         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2741         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2742         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2743                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2744                                 rebulid' timeout \n", pACB->host->host_no);
2745         }
2746         return;
2747 }
2748 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2749 {
2750         switch (acb->adapter_type) {
2751         case ACB_ADAPTER_TYPE_A:
2752                 arcmsr_start_hba_bgrb(acb);
2753                 break;
2754         case ACB_ADAPTER_TYPE_B:
2755                 arcmsr_start_hbb_bgrb(acb);
2756                 break;
2757         case ACB_ADAPTER_TYPE_C:
2758                 arcmsr_start_hbc_bgrb(acb);
2759         }
2760 }
2761
2762 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2763 {
2764         switch (acb->adapter_type) {
2765         case ACB_ADAPTER_TYPE_A: {
2766                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2767                 uint32_t outbound_doorbell;
2768                 /* empty doorbell Qbuffer if door bell ringed */
2769                 outbound_doorbell = readl(&reg->outbound_doorbell);
2770                 /*clear doorbell interrupt */
2771                 writel(outbound_doorbell, &reg->outbound_doorbell);
2772                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2773                 }
2774                 break;
2775
2776         case ACB_ADAPTER_TYPE_B: {
2777                 struct MessageUnit_B *reg = acb->pmuB;
2778                 /*clear interrupt and message state*/
2779                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2780                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2781                 /* let IOP know data has been read */
2782                 }
2783                 break;
2784         case ACB_ADAPTER_TYPE_C: {
2785                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2786                 uint32_t outbound_doorbell;
2787                 /* empty doorbell Qbuffer if door bell ringed */
2788                 outbound_doorbell = readl(&reg->outbound_doorbell);
2789                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2790                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2791                 }
2792         }
2793 }
2794
2795 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2796 {
2797         switch (acb->adapter_type) {
2798         case ACB_ADAPTER_TYPE_A:
2799                 return;
2800         case ACB_ADAPTER_TYPE_B:
2801                 {
2802                         struct MessageUnit_B *reg = acb->pmuB;
2803                         writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2804                         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2805                                 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2806                                 return;
2807                         }
2808                 }
2809                 break;
2810         case ACB_ADAPTER_TYPE_C:
2811                 return;
2812         }
2813         return;
2814 }
2815
2816 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2817 {
2818         uint8_t value[64];
2819         int i, count = 0;
2820         struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2821         struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2822         u32 temp = 0;
2823         /* backup pci config data */
2824         printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2825         for (i = 0; i < 64; i++) {
2826                 pci_read_config_byte(acb->pdev, i, &value[i]);
2827         }
2828         /* hardware reset signal */
2829         if ((acb->dev_id == 0x1680)) {
2830                 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2831         } else if ((acb->dev_id == 0x1880)) {
2832                 do {
2833                         count++;
2834                         writel(0xF, &pmuC->write_sequence);
2835                         writel(0x4, &pmuC->write_sequence);
2836                         writel(0xB, &pmuC->write_sequence);
2837                         writel(0x2, &pmuC->write_sequence);
2838                         writel(0x7, &pmuC->write_sequence);
2839                         writel(0xD, &pmuC->write_sequence);
2840                 } while ((((temp = readl(&pmuC->host_diagnostic)) | ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2841                 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2842         } else {
2843                 pci_write_config_byte(acb->pdev, 0x84, 0x20);
2844         }
2845         msleep(2000);
2846         /* write back pci config data */
2847         for (i = 0; i < 64; i++) {
2848                 pci_write_config_byte(acb->pdev, i, value[i]);
2849         }
2850         msleep(1000);
2851         return;
2852 }
2853 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2854 {
2855         uint32_t intmask_org;
2856         /* disable all outbound interrupt */
2857         intmask_org = arcmsr_disable_outbound_ints(acb);
2858         arcmsr_wait_firmware_ready(acb);
2859         arcmsr_iop_confirm(acb);
2860         /*start background rebuild*/
2861         arcmsr_start_adapter_bgrb(acb);
2862         /* empty doorbell Qbuffer if door bell ringed */
2863         arcmsr_clear_doorbell_queue_buffer(acb);
2864         arcmsr_enable_eoi_mode(acb);
2865         /* enable outbound Post Queue,outbound doorbell Interrupt */
2866         arcmsr_enable_outbound_ints(acb, intmask_org);
2867         acb->acb_flags |= ACB_F_IOP_INITED;
2868 }
2869
2870 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2871 {
2872         struct CommandControlBlock *ccb;
2873         uint32_t intmask_org;
2874         uint8_t rtnval = 0x00;
2875         int i = 0;
2876         unsigned long flags;
2877
2878         if (atomic_read(&acb->ccboutstandingcount) != 0) {
2879                 /* disable all outbound interrupt */
2880                 intmask_org = arcmsr_disable_outbound_ints(acb);
2881                 /* talk to iop 331 outstanding command aborted */
2882                 rtnval = arcmsr_abort_allcmd(acb);
2883                 /* clear all outbound posted Q */
2884                 arcmsr_done4abort_postqueue(acb);
2885                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2886                         ccb = acb->pccb_pool[i];
2887                         if (ccb->startdone == ARCMSR_CCB_START) {
2888                                 scsi_dma_unmap(ccb->pcmd);
2889                                 ccb->startdone = ARCMSR_CCB_DONE;
2890                                 ccb->ccb_flags = 0;
2891                                 spin_lock_irqsave(&acb->ccblist_lock, flags);
2892                                 list_add_tail(&ccb->list, &acb->ccb_free_list);
2893                                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2894                         }
2895                 }
2896                 atomic_set(&acb->ccboutstandingcount, 0);
2897                 /* enable all outbound interrupt */
2898                 arcmsr_enable_outbound_ints(acb, intmask_org);
2899                 return rtnval;
2900         }
2901         return rtnval;
2902 }
2903
2904 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2905 {
2906         struct AdapterControlBlock *acb;
2907         uint32_t intmask_org, outbound_doorbell;
2908         int retry_count = 0;
2909         int rtn = FAILED;
2910         acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2911         printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2912         acb->num_resets++;
2913
2914         switch(acb->adapter_type){
2915                 case ACB_ADAPTER_TYPE_A:{
2916                         if (acb->acb_flags & ACB_F_BUS_RESET){
2917                                 long timeout;
2918                                 printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
2919                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2920                                 if (timeout) {
2921                                         return SUCCESS;
2922                                 }
2923                         }
2924                         acb->acb_flags |= ACB_F_BUS_RESET;
2925                         if (!arcmsr_iop_reset(acb)) {
2926                                 struct MessageUnit_A __iomem *reg;
2927                                 reg = acb->pmuA;
2928                                 arcmsr_hardware_reset(acb);
2929                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
2930 sleep_again:
2931                                 ssleep(ARCMSR_SLEEPTIME);
2932                                 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2933                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
2934                                         if (retry_count > ARCMSR_RETRYCOUNT) {
2935                                                 acb->fw_flag = FW_DEADLOCK;
2936                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
2937                                                 return FAILED;
2938                                         }
2939                                         retry_count++;
2940                                         goto sleep_again;
2941                                 }
2942                                 acb->acb_flags |= ACB_F_IOP_INITED;
2943                                 /* disable all outbound interrupt */
2944                                 intmask_org = arcmsr_disable_outbound_ints(acb);
2945                                 arcmsr_get_firmware_spec(acb);
2946                                 arcmsr_start_adapter_bgrb(acb);
2947                                 /* clear Qbuffer if door bell ringed */
2948                                 outbound_doorbell = readl(&reg->outbound_doorbell);
2949                                 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2950                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2951                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
2952                                 arcmsr_enable_outbound_ints(acb, intmask_org);
2953                                 atomic_set(&acb->rq_map_token, 16);
2954                                 atomic_set(&acb->ante_token_value, 16);
2955                                 acb->fw_flag = FW_NORMAL;
2956                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2957                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2958                                 rtn = SUCCESS;
2959                                 printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
2960                         } else {
2961                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2962                                 atomic_set(&acb->rq_map_token, 16);
2963                                 atomic_set(&acb->ante_token_value, 16);
2964                                 acb->fw_flag = FW_NORMAL;
2965                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2966                                 rtn = SUCCESS;
2967                         }
2968                         break;
2969                 }
2970                 case ACB_ADAPTER_TYPE_B:{
2971                         acb->acb_flags |= ACB_F_BUS_RESET;
2972                         if (!arcmsr_iop_reset(acb)) {
2973                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2974                                 rtn = FAILED;
2975                         } else {
2976                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2977                                 atomic_set(&acb->rq_map_token, 16);
2978                                 atomic_set(&acb->ante_token_value, 16);
2979                                 acb->fw_flag = FW_NORMAL;
2980                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2981                                 rtn = SUCCESS;
2982                         }
2983                         break;
2984                 }
2985                 case ACB_ADAPTER_TYPE_C:{
2986                         if (acb->acb_flags & ACB_F_BUS_RESET) {
2987                                 long timeout;
2988                                 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
2989                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2990                                 if (timeout) {
2991                                         return SUCCESS;
2992                                 }
2993                         }
2994                         acb->acb_flags |= ACB_F_BUS_RESET;
2995                         if (!arcmsr_iop_reset(acb)) {
2996                                 struct MessageUnit_C __iomem *reg;
2997                                 reg = acb->pmuC;
2998                                 arcmsr_hardware_reset(acb);
2999                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3000 sleep:
3001                                 ssleep(ARCMSR_SLEEPTIME);
3002                                 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3003                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3004                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3005                                                 acb->fw_flag = FW_DEADLOCK;
3006                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3007                                                 return FAILED;
3008                                         }
3009                                         retry_count++;
3010                                         goto sleep;
3011                                 }
3012                                 acb->acb_flags |= ACB_F_IOP_INITED;
3013                                 /* disable all outbound interrupt */
3014                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3015                                 arcmsr_get_firmware_spec(acb);
3016                                 arcmsr_start_adapter_bgrb(acb);
3017                                 /* clear Qbuffer if door bell ringed */
3018                                 outbound_doorbell = readl(&reg->outbound_doorbell);
3019                                 writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3020                                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3021                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3022                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3023                                 atomic_set(&acb->rq_map_token, 16);
3024                                 atomic_set(&acb->ante_token_value, 16);
3025                                 acb->fw_flag = FW_NORMAL;
3026                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3027                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3028                                 rtn = SUCCESS;
3029                                 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3030                         } else {
3031                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3032                                 atomic_set(&acb->rq_map_token, 16);
3033                                 atomic_set(&acb->ante_token_value, 16);
3034                                 acb->fw_flag = FW_NORMAL;
3035                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3036                                 rtn = SUCCESS;
3037                         }
3038                         break;
3039                 }
3040         }
3041         return rtn;
3042 }
3043
3044 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3045                 struct CommandControlBlock *ccb)
3046 {
3047         int rtn;
3048         rtn = arcmsr_polling_ccbdone(acb, ccb);
3049         return rtn;
3050 }
3051
3052 static int arcmsr_abort(struct scsi_cmnd *cmd)
3053 {
3054         struct AdapterControlBlock *acb =
3055                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3056         int i = 0;
3057         int rtn = FAILED;
3058         printk(KERN_NOTICE
3059                 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3060                 acb->host->host_no, cmd->device->id, cmd->device->lun);
3061         acb->acb_flags |= ACB_F_ABORT;
3062         acb->num_aborts++;
3063         /*
3064         ************************************************
3065         ** the all interrupt service routine is locked
3066         ** we need to handle it as soon as possible and exit
3067         ************************************************
3068         */
3069         if (!atomic_read(&acb->ccboutstandingcount))
3070                 return rtn;
3071
3072         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3073                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3074                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3075                         ccb->startdone = ARCMSR_CCB_ABORTED;
3076                         rtn = arcmsr_abort_one_cmd(acb, ccb);
3077                         break;
3078                 }
3079         }
3080         acb->acb_flags &= ~ACB_F_ABORT;
3081         return rtn;
3082 }
3083
3084 static const char *arcmsr_info(struct Scsi_Host *host)
3085 {
3086         struct AdapterControlBlock *acb =
3087                 (struct AdapterControlBlock *) host->hostdata;
3088         static char buf[256];
3089         char *type;
3090         int raid6 = 1;
3091         switch (acb->pdev->device) {
3092         case PCI_DEVICE_ID_ARECA_1110:
3093         case PCI_DEVICE_ID_ARECA_1200:
3094         case PCI_DEVICE_ID_ARECA_1202:
3095         case PCI_DEVICE_ID_ARECA_1210:
3096                 raid6 = 0;
3097                 /*FALLTHRU*/
3098         case PCI_DEVICE_ID_ARECA_1120:
3099         case PCI_DEVICE_ID_ARECA_1130:
3100         case PCI_DEVICE_ID_ARECA_1160:
3101         case PCI_DEVICE_ID_ARECA_1170:
3102         case PCI_DEVICE_ID_ARECA_1201:
3103         case PCI_DEVICE_ID_ARECA_1220:
3104         case PCI_DEVICE_ID_ARECA_1230:
3105         case PCI_DEVICE_ID_ARECA_1260:
3106         case PCI_DEVICE_ID_ARECA_1270:
3107         case PCI_DEVICE_ID_ARECA_1280:
3108                 type = "SATA";
3109                 break;
3110         case PCI_DEVICE_ID_ARECA_1380:
3111         case PCI_DEVICE_ID_ARECA_1381:
3112         case PCI_DEVICE_ID_ARECA_1680:
3113         case PCI_DEVICE_ID_ARECA_1681:
3114         case PCI_DEVICE_ID_ARECA_1880:
3115                 type = "SAS";
3116                 break;
3117         default:
3118                 type = "X-TYPE";
3119                 break;
3120         }
3121         sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3122                         type, raid6 ? "( RAID6 capable)" : "",
3123                         ARCMSR_DRIVER_VERSION);
3124         return buf;
3125 }