drivers/scsi/arcmsr/arcmsr_hba.c

   1 /*
   2 *******************************************************************************
   3 **        O.S   : Linux
   4 **   FILE NAME  : arcmsr_hba.c
   5 **        BY    : Nick Cheng, C.L. Huang
   6 **   Description: SCSI RAID Device Driver for Areca RAID Controller
   7 *******************************************************************************
   8 ** Copyright (C) 2002 - 2014, Areca Technology Corporation All rights reserved
   9 **
  10 **     Web site: www.areca.com.tw
  11 **       E-mail: support@areca.com.tw
  12 **
  13 ** This program is free software; you can redistribute it and/or modify
  14 ** it under the terms of the GNU General Public License version 2 as
  15 ** published by the Free Software Foundation.
  16 ** This program is distributed in the hope that it will be useful,
  17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ** GNU General Public License for more details.
  20 *******************************************************************************
  21 ** Redistribution and use in source and binary forms, with or without
  22 ** modification, are permitted provided that the following conditions
  23 ** are met:
  24 ** 1. Redistributions of source code must retain the above copyright
  25 **    notice, this list of conditions and the following disclaimer.
  26 ** 2. Redistributions in binary form must reproduce the above copyright
  27 **    notice, this list of conditions and the following disclaimer in the
  28 **    documentation and/or other materials provided with the distribution.
  29 ** 3. The name of the author may not be used to endorse or promote products
  30 **    derived from this software without specific prior written permission.
  31 **
  32 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  33 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  34 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  35 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  36 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
  37 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  38 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
  39 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  40 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
  41 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  42 *******************************************************************************
  43 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
  44 **     Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
  45 *******************************************************************************
  46 */
  47 #include <linux/module.h>
  48 #include <linux/reboot.h>
  49 #include <linux/spinlock.h>
  50 #include <linux/pci_ids.h>
  51 #include <linux/interrupt.h>
  52 #include <linux/moduleparam.h>
  53 #include <linux/errno.h>
  54 #include <linux/types.h>
  55 #include <linux/delay.h>
  56 #include <linux/dma-mapping.h>
  57 #include <linux/timer.h>
  58 #include <linux/slab.h>
  59 #include <linux/pci.h>
  60 #include <linux/aer.h>
  61 #include <linux/circ_buf.h>
  62 #include <asm/dma.h>
  63 #include <asm/io.h>
  64 #include <linux/uaccess.h>
  65 #include <scsi/scsi_host.h>
  66 #include <scsi/scsi.h>
  67 #include <scsi/scsi_cmnd.h>
  68 #include <scsi/scsi_tcq.h>
  69 #include <scsi/scsi_device.h>
  70 #include <scsi/scsi_transport.h>
  71 #include <scsi/scsicam.h>
  72 #include "arcmsr.h"
  73 MODULE_AUTHOR("Nick Cheng, C.L. Huang <support@areca.com.tw>");
  74 MODULE_DESCRIPTION("Areca ARC11xx/12xx/16xx/188x SAS/SATA RAID Controller Driver");
  75 MODULE_LICENSE("Dual BSD/GPL");
  76 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
  77
  78 #define ARCMSR_SLEEPTIME        10
  79 #define ARCMSR_RETRYCOUNT       12
  80
  81 static wait_queue_head_t wait_q;
  82 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
  83                                         struct scsi_cmnd *cmd);
  84 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
  85 static int arcmsr_abort(struct scsi_cmnd *);
  86 static int arcmsr_bus_reset(struct scsi_cmnd *);
  87 static int arcmsr_bios_param(struct scsi_device *sdev,
  88                 struct block_device *bdev, sector_t capacity, int *info);
  89 static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
  90 static int arcmsr_probe(struct pci_dev *pdev,
  91                                 const struct pci_device_id *id);
  92 static int arcmsr_suspend(struct pci_dev *pdev, pm_message_t state);
  93 static int arcmsr_resume(struct pci_dev *pdev);
  94 static void arcmsr_remove(struct pci_dev *pdev);
  95 static void arcmsr_shutdown(struct pci_dev *pdev);
  96 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  97 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  98 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
  99 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
 100         u32 intmask_org);
 101 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
 102 static void arcmsr_hbaA_flush_cache(struct AdapterControlBlock *acb);
 103 static void arcmsr_hbaB_flush_cache(struct AdapterControlBlock *acb);
 104 static void arcmsr_request_device_map(struct timer_list *t);
 105 static void arcmsr_hbaA_request_device_map(struct AdapterControlBlock *acb);
 106 static void arcmsr_hbaB_request_device_map(struct AdapterControlBlock *acb);
 107 static void arcmsr_hbaC_request_device_map(struct AdapterControlBlock *acb);
 108 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
 109 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
 110 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
 111 static void arcmsr_hbaC_message_isr(struct AdapterControlBlock *pACB);
 112 static void arcmsr_hbaD_message_isr(struct AdapterControlBlock *acb);
 113 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
 114 static const char *arcmsr_info(struct Scsi_Host *);
 115 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 116 static void arcmsr_free_irq(struct pci_dev *, struct AdapterControlBlock *);
 117 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb);
 118 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
 119 {
 120         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 121                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 122         return scsi_change_queue_depth(sdev, queue_depth);
 123 }
 124
 125 static struct scsi_host_template arcmsr_scsi_host_template = {
 126         .module                 = THIS_MODULE,
 127         .name                   = "Areca SAS/SATA RAID driver",
 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_OUTSTANDING_CMD,
 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         .no_write_same          = 1,
 142 };
 143
 144 static struct pci_device_id arcmsr_device_id_table[] = {
 145         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110),
 146                 .driver_data = ACB_ADAPTER_TYPE_A},
 147         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120),
 148                 .driver_data = ACB_ADAPTER_TYPE_A},
 149         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130),
 150                 .driver_data = ACB_ADAPTER_TYPE_A},
 151         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160),
 152                 .driver_data = ACB_ADAPTER_TYPE_A},
 153         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170),
 154                 .driver_data = ACB_ADAPTER_TYPE_A},
 155         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200),
 156                 .driver_data = ACB_ADAPTER_TYPE_B},
 157         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201),
 158                 .driver_data = ACB_ADAPTER_TYPE_B},
 159         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202),
 160                 .driver_data = ACB_ADAPTER_TYPE_B},
 161         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1203),
 162                 .driver_data = ACB_ADAPTER_TYPE_B},
 163         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210),
 164                 .driver_data = ACB_ADAPTER_TYPE_A},
 165         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1214),
 166                 .driver_data = ACB_ADAPTER_TYPE_D},
 167         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220),
 168                 .driver_data = ACB_ADAPTER_TYPE_A},
 169         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230),
 170                 .driver_data = ACB_ADAPTER_TYPE_A},
 171         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260),
 172                 .driver_data = ACB_ADAPTER_TYPE_A},
 173         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270),
 174                 .driver_data = ACB_ADAPTER_TYPE_A},
 175         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280),
 176                 .driver_data = ACB_ADAPTER_TYPE_A},
 177         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380),
 178                 .driver_data = ACB_ADAPTER_TYPE_A},
 179         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381),
 180                 .driver_data = ACB_ADAPTER_TYPE_A},
 181         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680),
 182                 .driver_data = ACB_ADAPTER_TYPE_A},
 183         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681),
 184                 .driver_data = ACB_ADAPTER_TYPE_A},
 185         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880),
 186                 .driver_data = ACB_ADAPTER_TYPE_C},
 187         {0, 0}, /* Terminating entry */
 188 };
 189 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 190
 191 static struct pci_driver arcmsr_pci_driver = {
 192         .name                   = "arcmsr",
 193         .id_table                       = arcmsr_device_id_table,
 194         .probe                  = arcmsr_probe,
 195         .remove                 = arcmsr_remove,
 196         .suspend                = arcmsr_suspend,
 197         .resume                 = arcmsr_resume,
 198         .shutdown               = arcmsr_shutdown,
 199 };
 200 /*
 201 ****************************************************************************
 202 ****************************************************************************
 203 */
 204
 205 static void arcmsr_free_mu(struct AdapterControlBlock *acb)
 206 {
 207         switch (acb->adapter_type) {
 208         case ACB_ADAPTER_TYPE_B:
 209         case ACB_ADAPTER_TYPE_D: {
 210                 dma_free_coherent(&acb->pdev->dev, acb->roundup_ccbsize,
 211                         acb->dma_coherent2, acb->dma_coherent_handle2);
 212                 break;
 213         }
 214         }
 215 }
 216
 217 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 218 {
 219         struct pci_dev *pdev = acb->pdev;
 220         switch (acb->adapter_type){
 221         case ACB_ADAPTER_TYPE_A:{
 222                 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 223                 if (!acb->pmuA) {
 224                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 225                         return false;
 226                 }
 227                 break;
 228         }
 229         case ACB_ADAPTER_TYPE_B:{
 230                 void __iomem *mem_base0, *mem_base1;
 231                 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 232                 if (!mem_base0) {
 233                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 234                         return false;
 235                 }
 236                 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 237                 if (!mem_base1) {
 238                         iounmap(mem_base0);
 239                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 240                         return false;
 241                 }
 242                 acb->mem_base0 = mem_base0;
 243                 acb->mem_base1 = mem_base1;
 244                 break;
 245         }
 246         case ACB_ADAPTER_TYPE_C:{
 247                 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 248                 if (!acb->pmuC) {
 249                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 250                         return false;
 251                 }
 252                 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 253                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 254                         return true;
 255                 }
 256                 break;
 257         }
 258         case ACB_ADAPTER_TYPE_D: {
 259                 void __iomem *mem_base0;
 260                 unsigned long addr, range, flags;
 261
 262                 addr = (unsigned long)pci_resource_start(pdev, 0);
 263                 range = pci_resource_len(pdev, 0);
 264                 flags = pci_resource_flags(pdev, 0);
 265                 mem_base0 = ioremap(addr, range);
 266                 if (!mem_base0) {
 267                         pr_notice("arcmsr%d: memory mapping region fail\n",
 268                                 acb->host->host_no);
 269                         return false;
 270                 }
 271                 acb->mem_base0 = mem_base0;
 272                 break;
 273                 }
 274         }
 275         return true;
 276 }
 277
 278 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 279 {
 280         switch (acb->adapter_type) {
 281         case ACB_ADAPTER_TYPE_A:{
 282                 iounmap(acb->pmuA);
 283         }
 284         break;
 285         case ACB_ADAPTER_TYPE_B:{
 286                 iounmap(acb->mem_base0);
 287                 iounmap(acb->mem_base1);
 288         }
 289
 290         break;
 291         case ACB_ADAPTER_TYPE_C:{
 292                 iounmap(acb->pmuC);
 293         }
 294         break;
 295         case ACB_ADAPTER_TYPE_D:
 296                 iounmap(acb->mem_base0);
 297                 break;
 298         }
 299 }
 300
 301 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 302 {
 303         irqreturn_t handle_state;
 304         struct AdapterControlBlock *acb = dev_id;
 305
 306         handle_state = arcmsr_interrupt(acb);
 307         return handle_state;
 308 }
 309
 310 static int arcmsr_bios_param(struct scsi_device *sdev,
 311                 struct block_device *bdev, sector_t capacity, int *geom)
 312 {
 313         int ret, heads, sectors, cylinders, total_capacity;
 314         unsigned char *buffer;/* return copy of block device's partition table */
 315
 316         buffer = scsi_bios_ptable(bdev);
 317         if (buffer) {
 318                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 319                 kfree(buffer);
 320                 if (ret != -1)
 321                         return ret;
 322         }
 323         total_capacity = capacity;
 324         heads = 64;
 325         sectors = 32;
 326         cylinders = total_capacity / (heads * sectors);
 327         if (cylinders > 1024) {
 328                 heads = 255;
 329                 sectors = 63;
 330                 cylinders = total_capacity / (heads * sectors);
 331         }
 332         geom[0] = heads;
 333         geom[1] = sectors;
 334         geom[2] = cylinders;
 335         return 0;
 336 }
 337
 338 static uint8_t arcmsr_hbaA_wait_msgint_ready(struct AdapterControlBlock *acb)
 339 {
 340         struct MessageUnit_A __iomem *reg = acb->pmuA;
 341         int i;
 342
 343         for (i = 0; i < 2000; i++) {
 344                 if (readl(&reg->outbound_intstatus) &
 345                                 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 346                         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 347                                 &reg->outbound_intstatus);
 348                         return true;
 349                 }
 350                 msleep(10);
 351         } /* max 20 seconds */
 352
 353         return false;
 354 }
 355
 356 static uint8_t arcmsr_hbaB_wait_msgint_ready(struct AdapterControlBlock *acb)
 357 {
 358         struct MessageUnit_B *reg = acb->pmuB;
 359         int i;
 360
 361         for (i = 0; i < 2000; i++) {
 362                 if (readl(reg->iop2drv_doorbell)
 363                         & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 364                         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN,
 365                                         reg->iop2drv_doorbell);
 366                         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT,
 367                                         reg->drv2iop_doorbell);
 368                         return true;
 369                 }
 370                 msleep(10);
 371         } /* max 20 seconds */
 372
 373         return false;
 374 }
 375
 376 static uint8_t arcmsr_hbaC_wait_msgint_ready(struct AdapterControlBlock *pACB)
 377 {
 378         struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
 379         int i;
 380
 381         for (i = 0; i < 2000; i++) {
 382                 if (readl(&phbcmu->outbound_doorbell)
 383                                 & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 384                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR,
 385                                 &phbcmu->outbound_doorbell_clear); /*clear interrupt*/
 386                         return true;
 387                 }
 388                 msleep(10);
 389         } /* max 20 seconds */
 390
 391         return false;
 392 }
 393
 394 static bool arcmsr_hbaD_wait_msgint_ready(struct AdapterControlBlock *pACB)
 395 {
 396         struct MessageUnit_D *reg = pACB->pmuD;
 397         int i;
 398
 399         for (i = 0; i < 2000; i++) {
 400                 if (readl(reg->outbound_doorbell)
 401                         & ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE) {
 402                         writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE,
 403                                 reg->outbound_doorbell);
 404                         return true;
 405                 }
 406                 msleep(10);
 407         } /* max 20 seconds */
 408         return false;
 409 }
 410
 411 static void arcmsr_hbaA_flush_cache(struct AdapterControlBlock *acb)
 412 {
 413         struct MessageUnit_A __iomem *reg = acb->pmuA;
 414         int retry_count = 30;
 415         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 416         do {
 417                 if (arcmsr_hbaA_wait_msgint_ready(acb))
 418                         break;
 419                 else {
 420                         retry_count--;
 421                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 422                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 423                 }
 424         } while (retry_count != 0);
 425 }
 426
 427 static void arcmsr_hbaB_flush_cache(struct AdapterControlBlock *acb)
 428 {
 429         struct MessageUnit_B *reg = acb->pmuB;
 430         int retry_count = 30;
 431         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 432         do {
 433                 if (arcmsr_hbaB_wait_msgint_ready(acb))
 434                         break;
 435                 else {
 436                         retry_count--;
 437                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 438                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 439                 }
 440         } while (retry_count != 0);
 441 }
 442
 443 static void arcmsr_hbaC_flush_cache(struct AdapterControlBlock *pACB)
 444 {
 445         struct MessageUnit_C __iomem *reg = pACB->pmuC;
 446         int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 447         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 448         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 449         do {
 450                 if (arcmsr_hbaC_wait_msgint_ready(pACB)) {
 451                         break;
 452                 } else {
 453                         retry_count--;
 454                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 455                         timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 456                 }
 457         } while (retry_count != 0);
 458         return;
 459 }
 460
 461 static void arcmsr_hbaD_flush_cache(struct AdapterControlBlock *pACB)
 462 {
 463         int retry_count = 15;
 464         struct MessageUnit_D *reg = pACB->pmuD;
 465
 466         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, reg->inbound_msgaddr0);
 467         do {
 468                 if (arcmsr_hbaD_wait_msgint_ready(pACB))
 469                         break;
 470
 471                 retry_count--;
 472                 pr_notice("arcmsr%d: wait 'flush adapter "
 473                         "cache' timeout, retry count down = %d\n",
 474                         pACB->host->host_no, retry_count);
 475         } while (retry_count != 0);
 476 }
 477
 478 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 479 {
 480         switch (acb->adapter_type) {
 481
 482         case ACB_ADAPTER_TYPE_A: {
 483                 arcmsr_hbaA_flush_cache(acb);
 484                 }
 485                 break;
 486
 487         case ACB_ADAPTER_TYPE_B: {
 488                 arcmsr_hbaB_flush_cache(acb);
 489                 }
 490                 break;
 491         case ACB_ADAPTER_TYPE_C: {
 492                 arcmsr_hbaC_flush_cache(acb);
 493                 }
 494                 break;
 495         case ACB_ADAPTER_TYPE_D:
 496                 arcmsr_hbaD_flush_cache(acb);
 497                 break;
 498         }
 499 }
 500
 501 static bool arcmsr_alloc_io_queue(struct AdapterControlBlock *acb)
 502 {
 503         bool rtn = true;
 504         void *dma_coherent;
 505         dma_addr_t dma_coherent_handle;
 506         struct pci_dev *pdev = acb->pdev;
 507
 508         switch (acb->adapter_type) {
 509         case ACB_ADAPTER_TYPE_B: {
 510                 struct MessageUnit_B *reg;
 511                 acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_B), 32);
 512                 dma_coherent = dma_zalloc_coherent(&pdev->dev, acb->roundup_ccbsize,
 513                         &dma_coherent_handle, GFP_KERNEL);
 514                 if (!dma_coherent) {
 515                         pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
 516                         return false;
 517                 }
 518                 acb->dma_coherent_handle2 = dma_coherent_handle;
 519                 acb->dma_coherent2 = dma_coherent;
 520                 reg = (struct MessageUnit_B *)dma_coherent;
 521                 acb->pmuB = reg;
 522                 if (acb->pdev->device == PCI_DEVICE_ID_ARECA_1203) {
 523                         reg->drv2iop_doorbell = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_1203);
 524                         reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK_1203);
 525                         reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_1203);
 526                         reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK_1203);
 527                 } else {
 528                         reg->drv2iop_doorbell = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL);
 529                         reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK);
 530                         reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL);
 531                         reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK);
 532                 }
 533                 reg->message_wbuffer = MEM_BASE1(ARCMSR_MESSAGE_WBUFFER);
 534                 reg->message_rbuffer = MEM_BASE1(ARCMSR_MESSAGE_RBUFFER);
 535                 reg->message_rwbuffer = MEM_BASE1(ARCMSR_MESSAGE_RWBUFFER);
 536                 }
 537                 break;
 538         case ACB_ADAPTER_TYPE_D: {
 539                 struct MessageUnit_D *reg;
 540
 541                 acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_D), 32);
 542                 dma_coherent = dma_zalloc_coherent(&pdev->dev, acb->roundup_ccbsize,
 543                         &dma_coherent_handle, GFP_KERNEL);
 544                 if (!dma_coherent) {
 545                         pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
 546                         return false;
 547                 }
 548                 acb->dma_coherent_handle2 = dma_coherent_handle;
 549                 acb->dma_coherent2 = dma_coherent;
 550                 reg = (struct MessageUnit_D *)dma_coherent;
 551                 acb->pmuD = reg;
 552                 reg->chip_id = MEM_BASE0(ARCMSR_ARC1214_CHIP_ID);
 553                 reg->cpu_mem_config = MEM_BASE0(ARCMSR_ARC1214_CPU_MEMORY_CONFIGURATION);
 554                 reg->i2o_host_interrupt_mask = MEM_BASE0(ARCMSR_ARC1214_I2_HOST_INTERRUPT_MASK);
 555                 reg->sample_at_reset = MEM_BASE0(ARCMSR_ARC1214_SAMPLE_RESET);
 556                 reg->reset_request = MEM_BASE0(ARCMSR_ARC1214_RESET_REQUEST);
 557                 reg->host_int_status = MEM_BASE0(ARCMSR_ARC1214_MAIN_INTERRUPT_STATUS);
 558                 reg->pcief0_int_enable = MEM_BASE0(ARCMSR_ARC1214_PCIE_F0_INTERRUPT_ENABLE);
 559                 reg->inbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE0);
 560                 reg->inbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE1);
 561                 reg->outbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE0);
 562                 reg->outbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE1);
 563                 reg->inbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_INBOUND_DOORBELL);
 564                 reg->outbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL);
 565                 reg->outbound_doorbell_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL_ENABLE);
 566                 reg->inboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_LOW);
 567                 reg->inboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_HIGH);
 568                 reg->inboundlist_write_pointer = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_WRITE_POINTER);
 569                 reg->outboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_LOW);
 570                 reg->outboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_HIGH);
 571                 reg->outboundlist_copy_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_COPY_POINTER);
 572                 reg->outboundlist_read_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_READ_POINTER);
 573                 reg->outboundlist_interrupt_cause = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_CAUSE);
 574                 reg->outboundlist_interrupt_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_ENABLE);
 575                 reg->message_wbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_WBUFFER);
 576                 reg->message_rbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RBUFFER);
 577                 reg->msgcode_rwbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RWBUFFER);
 578                 }
 579                 break;
 580         default:
 581                 break;
 582         }
 583         return rtn;
 584 }
 585
 586 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 587 {
 588         struct pci_dev *pdev = acb->pdev;
 589         void *dma_coherent;
 590         dma_addr_t dma_coherent_handle;
 591         struct CommandControlBlock *ccb_tmp;
 592         int i = 0, j = 0;
 593         dma_addr_t cdb_phyaddr;
 594         unsigned long roundup_ccbsize;
 595         unsigned long max_xfer_len;
 596         unsigned long max_sg_entrys;
 597         uint32_t  firm_config_version;
 598
 599         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 600                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 601                         acb->devstate[i][j] = ARECA_RAID_GONE;
 602
 603         max_xfer_len = ARCMSR_MAX_XFER_LEN;
 604         max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 605         firm_config_version = acb->firm_cfg_version;
 606         if((firm_config_version & 0xFF) >= 3){
 607                 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 608                 max_sg_entrys = (max_xfer_len/4096);
 609         }
 610         acb->host->max_sectors = max_xfer_len/512;
 611         acb->host->sg_tablesize = max_sg_entrys;
 612         roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 613         acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM;
 614         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 615         if(!dma_coherent){
 616                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error\n", acb->host->host_no);
 617                 return -ENOMEM;
 618         }
 619         acb->dma_coherent = dma_coherent;
 620         acb->dma_coherent_handle = dma_coherent_handle;
 621         memset(dma_coherent, 0, acb->uncache_size);
 622         ccb_tmp = dma_coherent;
 623         acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 624         for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 625                 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 626                 switch (acb->adapter_type) {
 627                 case ACB_ADAPTER_TYPE_A:
 628                 case ACB_ADAPTER_TYPE_B:
 629                         ccb_tmp->cdb_phyaddr = cdb_phyaddr >> 5;
 630                         break;
 631                 case ACB_ADAPTER_TYPE_C:
 632                 case ACB_ADAPTER_TYPE_D:
 633                         ccb_tmp->cdb_phyaddr = cdb_phyaddr;
 634                         break;
 635                 }
 636                 acb->pccb_pool[i] = ccb_tmp;
 637                 ccb_tmp->acb = acb;
 638                 INIT_LIST_HEAD(&ccb_tmp->list);
 639                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 640                 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 641                 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 642         }
 643         return 0;
 644 }
 645
 646 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
 647 {
 648         struct AdapterControlBlock *acb = container_of(work,
 649                 struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 650         char *acb_dev_map = (char *)acb->device_map;
 651         uint32_t __iomem *signature = NULL;
 652         char __iomem *devicemap = NULL;
 653         int target, lun;
 654         struct scsi_device *psdev;
 655         char diff, temp;
 656
 657         switch (acb->adapter_type) {
 658         case ACB_ADAPTER_TYPE_A: {
 659                 struct MessageUnit_A __iomem *reg  = acb->pmuA;
 660
 661                 signature = (uint32_t __iomem *)(&reg->message_rwbuffer[0]);
 662                 devicemap = (char __iomem *)(&reg->message_rwbuffer[21]);
 663                 break;
 664         }
 665         case ACB_ADAPTER_TYPE_B: {
 666                 struct MessageUnit_B *reg  = acb->pmuB;
 667
 668                 signature = (uint32_t __iomem *)(&reg->message_rwbuffer[0]);
 669                 devicemap = (char __iomem *)(&reg->message_rwbuffer[21]);
 670                 break;
 671         }
 672         case ACB_ADAPTER_TYPE_C: {
 673                 struct MessageUnit_C __iomem *reg  = acb->pmuC;
 674
 675                 signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 676                 devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 677                 break;
 678         }
 679         case ACB_ADAPTER_TYPE_D: {
 680                 struct MessageUnit_D *reg  = acb->pmuD;
 681
 682                 signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 683                 devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 684                 break;
 685         }
 686         }
 687         atomic_inc(&acb->rq_map_token);
 688         if (readl(signature) != ARCMSR_SIGNATURE_GET_CONFIG)
 689                 return;
 690         for (target = 0; target < ARCMSR_MAX_TARGETID - 1;
 691                 target++) {
 692                 temp = readb(devicemap);
 693                 diff = (*acb_dev_map) ^ temp;
 694                 if (diff != 0) {
 695                         *acb_dev_map = temp;
 696                         for (lun = 0; lun < ARCMSR_MAX_TARGETLUN;
 697                                 lun++) {
 698                                 if ((diff & 0x01) == 1 &&
 699                                         (temp & 0x01) == 1) {
 700                                         scsi_add_device(acb->host,
 701                                                 0, target, lun);
 702                                 } else if ((diff & 0x01) == 1
 703                                         && (temp & 0x01) == 0) {
 704                                         psdev = scsi_device_lookup(acb->host,
 705                                                 0, target, lun);
 706                                         if (psdev != NULL) {
 707                                                 scsi_remove_device(psdev);
 708                                                 scsi_device_put(psdev);
 709                                         }
 710                                 }
 711                                 temp >>= 1;
 712                                 diff >>= 1;
 713                         }
 714                 }
 715                 devicemap++;
 716                 acb_dev_map++;
 717         }
 718 }
 719
 720 static int
 721 arcmsr_request_irq(struct pci_dev *pdev, struct AdapterControlBlock *acb)
 722 {
 723         unsigned long flags;
 724         int nvec, i;
 725
 726         nvec = pci_alloc_irq_vectors(pdev, 1, ARCMST_NUM_MSIX_VECTORS,
 727                         PCI_IRQ_MSIX);
 728         if (nvec > 0) {
 729                 pr_info("arcmsr%d: msi-x enabled\n", acb->host->host_no);
 730                 flags = 0;
 731         } else {
 732                 nvec = pci_alloc_irq_vectors(pdev, 1, 1,
 733                                 PCI_IRQ_MSI | PCI_IRQ_LEGACY);
 734                 if (nvec < 1)
 735                         return FAILED;
 736
 737                 flags = IRQF_SHARED;
 738         }
 739
 740         acb->vector_count = nvec;
 741         for (i = 0; i < nvec; i++) {
 742                 if (request_irq(pci_irq_vector(pdev, i), arcmsr_do_interrupt,
 743                                 flags, "arcmsr", acb)) {
 744                         pr_warn("arcmsr%d: request_irq =%d failed!\n",
 745                                 acb->host->host_no, pci_irq_vector(pdev, i));
 746                         goto out_free_irq;
 747                 }
 748         }
 749
 750         return SUCCESS;
 751 out_free_irq:
 752         while (--i >= 0)
 753                 free_irq(pci_irq_vector(pdev, i), acb);
 754         pci_free_irq_vectors(pdev);
 755         return FAILED;
 756 }
 757
 758 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 759 {
 760         struct Scsi_Host *host;
 761         struct AdapterControlBlock *acb;
 762         uint8_t bus,dev_fun;
 763         int error;
 764         error = pci_enable_device(pdev);
 765         if(error){
 766                 return -ENODEV;
 767         }
 768         host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 769         if(!host){
 770                 goto pci_disable_dev;
 771         }
 772         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 773         if(error){
 774                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 775                 if(error){
 776                         printk(KERN_WARNING
 777                                "scsi%d: No suitable DMA mask available\n",
 778                                host->host_no);
 779                         goto scsi_host_release;
 780                 }
 781         }
 782         init_waitqueue_head(&wait_q);
 783         bus = pdev->bus->number;
 784         dev_fun = pdev->devfn;
 785         acb = (struct AdapterControlBlock *) host->hostdata;
 786         memset(acb,0,sizeof(struct AdapterControlBlock));
 787         acb->pdev = pdev;
 788         acb->host = host;
 789         host->max_lun = ARCMSR_MAX_TARGETLUN;
 790         host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 791         host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 792         host->can_queue = ARCMSR_MAX_OUTSTANDING_CMD;
 793         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 794         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 795         host->unique_id = (bus << 8) | dev_fun;
 796         pci_set_drvdata(pdev, host);
 797         pci_set_master(pdev);
 798         error = pci_request_regions(pdev, "arcmsr");
 799         if(error){
 800                 goto scsi_host_release;
 801         }
 802         spin_lock_init(&acb->eh_lock);
 803         spin_lock_init(&acb->ccblist_lock);
 804         spin_lock_init(&acb->postq_lock);
 805         spin_lock_init(&acb->doneq_lock);
 806         spin_lock_init(&acb->rqbuffer_lock);
 807         spin_lock_init(&acb->wqbuffer_lock);
 808         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 809                         ACB_F_MESSAGE_RQBUFFER_CLEARED |
 810                         ACB_F_MESSAGE_WQBUFFER_READED);
 811         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 812         INIT_LIST_HEAD(&acb->ccb_free_list);
 813         acb->adapter_type = id->driver_data;
 814         error = arcmsr_remap_pciregion(acb);
 815         if(!error){
 816                 goto pci_release_regs;
 817         }
 818         error = arcmsr_alloc_io_queue(acb);
 819         if (!error)
 820                 goto unmap_pci_region;
 821         error = arcmsr_get_firmware_spec(acb);
 822         if(!error){
 823                 goto free_hbb_mu;
 824         }
 825         error = arcmsr_alloc_ccb_pool(acb);
 826         if(error){
 827                 goto free_hbb_mu;
 828         }
 829         error = scsi_add_host(host, &pdev->dev);
 830         if(error){
 831                 goto free_ccb_pool;
 832         }
 833         if (arcmsr_request_irq(pdev, acb) == FAILED)
 834                 goto scsi_host_remove;
 835         arcmsr_iop_init(acb);
 836         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 837         atomic_set(&acb->rq_map_token, 16);
 838         atomic_set(&acb->ante_token_value, 16);
 839         acb->fw_flag = FW_NORMAL;
 840         timer_setup(&acb->eternal_timer, arcmsr_request_device_map, 0);
 841         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 842         add_timer(&acb->eternal_timer);
 843         if(arcmsr_alloc_sysfs_attr(acb))
 844                 goto out_free_sysfs;
 845         scsi_scan_host(host);
 846         return 0;
 847 out_free_sysfs:
 848         del_timer_sync(&acb->eternal_timer);
 849         flush_work(&acb->arcmsr_do_message_isr_bh);
 850         arcmsr_stop_adapter_bgrb(acb);
 851         arcmsr_flush_adapter_cache(acb);
 852         arcmsr_free_irq(pdev, acb);
 853 scsi_host_remove:
 854         scsi_remove_host(host);
 855 free_ccb_pool:
 856         arcmsr_free_ccb_pool(acb);
 857 free_hbb_mu:
 858         arcmsr_free_mu(acb);
 859 unmap_pci_region:
 860         arcmsr_unmap_pciregion(acb);
 861 pci_release_regs:
 862         pci_release_regions(pdev);
 863 scsi_host_release:
 864         scsi_host_put(host);
 865 pci_disable_dev:
 866         pci_disable_device(pdev);
 867         return -ENODEV;
 868 }
 869
 870 static void arcmsr_free_irq(struct pci_dev *pdev,
 871                 struct AdapterControlBlock *acb)
 872 {
 873         int i;
 874
 875         for (i = 0; i < acb->vector_count; i++)
 876                 free_irq(pci_irq_vector(pdev, i), acb);
 877         pci_free_irq_vectors(pdev);
 878 }
 879
 880 static int arcmsr_suspend(struct pci_dev *pdev, pm_message_t state)
 881 {
 882         uint32_t intmask_org;
 883         struct Scsi_Host *host = pci_get_drvdata(pdev);
 884         struct AdapterControlBlock *acb =
 885                 (struct AdapterControlBlock *)host->hostdata;
 886
 887         intmask_org = arcmsr_disable_outbound_ints(acb);
 888         arcmsr_free_irq(pdev, acb);
 889         del_timer_sync(&acb->eternal_timer);
 890         flush_work(&acb->arcmsr_do_message_isr_bh);
 891         arcmsr_stop_adapter_bgrb(acb);
 892         arcmsr_flush_adapter_cache(acb);
 893         pci_set_drvdata(pdev, host);
 894         pci_save_state(pdev);
 895         pci_disable_device(pdev);
 896         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 897         return 0;
 898 }
 899
 900 static int arcmsr_resume(struct pci_dev *pdev)
 901 {
 902         int error;
 903         struct Scsi_Host *host = pci_get_drvdata(pdev);
 904         struct AdapterControlBlock *acb =
 905                 (struct AdapterControlBlock *)host->hostdata;
 906
 907         pci_set_power_state(pdev, PCI_D0);
 908         pci_enable_wake(pdev, PCI_D0, 0);
 909         pci_restore_state(pdev);
 910         if (pci_enable_device(pdev)) {
 911                 pr_warn("%s: pci_enable_device error\n", __func__);
 912                 return -ENODEV;
 913         }
 914         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 915         if (error) {
 916                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 917                 if (error) {
 918                         pr_warn("scsi%d: No suitable DMA mask available\n",
 919                                host->host_no);
 920                         goto controller_unregister;
 921                 }
 922         }
 923         pci_set_master(pdev);
 924         if (arcmsr_request_irq(pdev, acb) == FAILED)
 925                 goto controller_stop;
 926         arcmsr_iop_init(acb);
 927         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 928         atomic_set(&acb->rq_map_token, 16);
 929         atomic_set(&acb->ante_token_value, 16);
 930         acb->fw_flag = FW_NORMAL;
 931         timer_setup(&acb->eternal_timer, arcmsr_request_device_map, 0);
 932         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 933         add_timer(&acb->eternal_timer);
 934         return 0;
 935 controller_stop:
 936         arcmsr_stop_adapter_bgrb(acb);
 937         arcmsr_flush_adapter_cache(acb);
 938 controller_unregister:
 939         scsi_remove_host(host);
 940         arcmsr_free_ccb_pool(acb);
 941         arcmsr_unmap_pciregion(acb);
 942         pci_release_regions(pdev);
 943         scsi_host_put(host);
 944         pci_disable_device(pdev);
 945         return -ENODEV;
 946 }
 947
 948 static uint8_t arcmsr_hbaA_abort_allcmd(struct AdapterControlBlock *acb)
 949 {
 950         struct MessageUnit_A __iomem *reg = acb->pmuA;
 951         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 952         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
 953                 printk(KERN_NOTICE
 954                         "arcmsr%d: wait 'abort all outstanding command' timeout\n"
 955                         , acb->host->host_no);
 956                 return false;
 957         }
 958         return true;
 959 }
 960
 961 static uint8_t arcmsr_hbaB_abort_allcmd(struct AdapterControlBlock *acb)
 962 {
 963         struct MessageUnit_B *reg = acb->pmuB;
 964
 965         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 966         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
 967                 printk(KERN_NOTICE
 968                         "arcmsr%d: wait 'abort all outstanding command' timeout\n"
 969                         , acb->host->host_no);
 970                 return false;
 971         }
 972         return true;
 973 }
 974 static uint8_t arcmsr_hbaC_abort_allcmd(struct AdapterControlBlock *pACB)
 975 {
 976         struct MessageUnit_C __iomem *reg = pACB->pmuC;
 977         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 978         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 979         if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
 980                 printk(KERN_NOTICE
 981                         "arcmsr%d: wait 'abort all outstanding command' timeout\n"
 982                         , pACB->host->host_no);
 983                 return false;
 984         }
 985         return true;
 986 }
 987
 988 static uint8_t arcmsr_hbaD_abort_allcmd(struct AdapterControlBlock *pACB)
 989 {
 990         struct MessageUnit_D *reg = pACB->pmuD;
 991
 992         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, reg->inbound_msgaddr0);
 993         if (!arcmsr_hbaD_wait_msgint_ready(pACB)) {
 994                 pr_notice("arcmsr%d: wait 'abort all outstanding "
 995                         "command' timeout\n", pACB->host->host_no);
 996                 return false;
 997         }
 998         return true;
 999 }
1000
1001 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
1002 {
1003         uint8_t rtnval = 0;
1004         switch (acb->adapter_type) {
1005         case ACB_ADAPTER_TYPE_A: {
1006                 rtnval = arcmsr_hbaA_abort_allcmd(acb);
1007                 }
1008                 break;
1009
1010         case ACB_ADAPTER_TYPE_B: {
1011                 rtnval = arcmsr_hbaB_abort_allcmd(acb);
1012                 }
1013                 break;
1014
1015         case ACB_ADAPTER_TYPE_C: {
1016                 rtnval = arcmsr_hbaC_abort_allcmd(acb);
1017                 }
1018                 break;
1019
1020         case ACB_ADAPTER_TYPE_D:
1021                 rtnval = arcmsr_hbaD_abort_allcmd(acb);
1022                 break;
1023         }
1024         return rtnval;
1025 }
1026
1027 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
1028 {
1029         struct scsi_cmnd *pcmd = ccb->pcmd;
1030
1031         scsi_dma_unmap(pcmd);
1032 }
1033
1034 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
1035 {
1036         struct AdapterControlBlock *acb = ccb->acb;
1037         struct scsi_cmnd *pcmd = ccb->pcmd;
1038         unsigned long flags;
1039         atomic_dec(&acb->ccboutstandingcount);
1040         arcmsr_pci_unmap_dma(ccb);
1041         ccb->startdone = ARCMSR_CCB_DONE;
1042         spin_lock_irqsave(&acb->ccblist_lock, flags);
1043         list_add_tail(&ccb->list, &acb->ccb_free_list);
1044         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
1045         pcmd->scsi_done(pcmd);
1046 }
1047
1048 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
1049 {
1050
1051         struct scsi_cmnd *pcmd = ccb->pcmd;
1052         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
1053         pcmd->result = DID_OK << 16;
1054         if (sensebuffer) {
1055                 int sense_data_length =
1056                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
1057                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
1058                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
1059                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
1060                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
1061                 sensebuffer->Valid = 1;
1062         }
1063 }
1064
1065 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
1066 {
1067         u32 orig_mask = 0;
1068         switch (acb->adapter_type) {
1069         case ACB_ADAPTER_TYPE_A : {
1070                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1071                 orig_mask = readl(&reg->outbound_intmask);
1072                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
1073                                                 &reg->outbound_intmask);
1074                 }
1075                 break;
1076         case ACB_ADAPTER_TYPE_B : {
1077                 struct MessageUnit_B *reg = acb->pmuB;
1078                 orig_mask = readl(reg->iop2drv_doorbell_mask);
1079                 writel(0, reg->iop2drv_doorbell_mask);
1080                 }
1081                 break;
1082         case ACB_ADAPTER_TYPE_C:{
1083                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1084                 /* disable all outbound interrupt */
1085                 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
1086                 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
1087                 }
1088                 break;
1089         case ACB_ADAPTER_TYPE_D: {
1090                 struct MessageUnit_D *reg = acb->pmuD;
1091                 /* disable all outbound interrupt */
1092                 writel(ARCMSR_ARC1214_ALL_INT_DISABLE, reg->pcief0_int_enable);
1093                 }
1094                 break;
1095         }
1096         return orig_mask;
1097 }
1098
1099 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
1100                         struct CommandControlBlock *ccb, bool error)
1101 {
1102         uint8_t id, lun;
1103         id = ccb->pcmd->device->id;
1104         lun = ccb->pcmd->device->lun;
1105         if (!error) {
1106                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
1107                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
1108                 ccb->pcmd->result = DID_OK << 16;
1109                 arcmsr_ccb_complete(ccb);
1110         }else{
1111                 switch (ccb->arcmsr_cdb.DeviceStatus) {
1112                 case ARCMSR_DEV_SELECT_TIMEOUT: {
1113                         acb->devstate[id][lun] = ARECA_RAID_GONE;
1114                         ccb->pcmd->result = DID_NO_CONNECT << 16;
1115                         arcmsr_ccb_complete(ccb);
1116                         }
1117                         break;
1118
1119                 case ARCMSR_DEV_ABORTED:
1120
1121                 case ARCMSR_DEV_INIT_FAIL: {
1122                         acb->devstate[id][lun] = ARECA_RAID_GONE;
1123                         ccb->pcmd->result = DID_BAD_TARGET << 16;
1124                         arcmsr_ccb_complete(ccb);
1125                         }
1126                         break;
1127
1128                 case ARCMSR_DEV_CHECK_CONDITION: {
1129                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
1130                         arcmsr_report_sense_info(ccb);
1131                         arcmsr_ccb_complete(ccb);
1132                         }
1133                         break;
1134
1135                 default:
1136                         printk(KERN_NOTICE
1137                                 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
1138                                 but got unknown DeviceStatus = 0x%x \n"
1139                                 , acb->host->host_no
1140                                 , id
1141                                 , lun
1142                                 , ccb->arcmsr_cdb.DeviceStatus);
1143                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
1144                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
1145                                 arcmsr_ccb_complete(ccb);
1146                         break;
1147                 }
1148         }
1149 }
1150
1151 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
1152 {
1153         int id, lun;
1154         if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
1155                 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
1156                         struct scsi_cmnd *abortcmd = pCCB->pcmd;
1157                         if (abortcmd) {
1158                                 id = abortcmd->device->id;
1159                                 lun = abortcmd->device->lun;
1160                                 abortcmd->result |= DID_ABORT << 16;
1161                                 arcmsr_ccb_complete(pCCB);
1162                                 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
1163                                 acb->host->host_no, pCCB);
1164                         }
1165                         return;
1166                 }
1167                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
1168                                 done acb = '0x%p'"
1169                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
1170                                 " ccboutstandingcount = %d \n"
1171                                 , acb->host->host_no
1172                                 , acb
1173                                 , pCCB
1174                                 , pCCB->acb
1175                                 , pCCB->startdone
1176                                 , atomic_read(&acb->ccboutstandingcount));
1177                   return;
1178         }
1179         arcmsr_report_ccb_state(acb, pCCB, error);
1180 }
1181
1182 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
1183 {
1184         int i = 0;
1185         uint32_t flag_ccb, ccb_cdb_phy;
1186         struct ARCMSR_CDB *pARCMSR_CDB;
1187         bool error;
1188         struct CommandControlBlock *pCCB;
1189         switch (acb->adapter_type) {
1190
1191         case ACB_ADAPTER_TYPE_A: {
1192                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1193                 uint32_t outbound_intstatus;
1194                 outbound_intstatus = readl(&reg->outbound_intstatus) &
1195                                         acb->outbound_int_enable;
1196                 /*clear and abort all outbound posted Q*/
1197                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
1198                 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
1199                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1200                         pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1201                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1202                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1203                         arcmsr_drain_donequeue(acb, pCCB, error);
1204                 }
1205                 }
1206                 break;
1207
1208         case ACB_ADAPTER_TYPE_B: {
1209                 struct MessageUnit_B *reg = acb->pmuB;
1210                 /*clear all outbound posted Q*/
1211                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
1212                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
1213                         flag_ccb = reg->done_qbuffer[i];
1214                         if (flag_ccb != 0) {
1215                                 reg->done_qbuffer[i] = 0;
1216                                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1217                                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1218                                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1219                                 arcmsr_drain_donequeue(acb, pCCB, error);
1220                         }
1221                         reg->post_qbuffer[i] = 0;
1222                 }
1223                 reg->doneq_index = 0;
1224                 reg->postq_index = 0;
1225                 }
1226                 break;
1227         case ACB_ADAPTER_TYPE_C: {
1228                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1229                 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1230                         /*need to do*/
1231                         flag_ccb = readl(&reg->outbound_queueport_low);
1232                         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1233                         pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
1234                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1235                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1236                         arcmsr_drain_donequeue(acb, pCCB, error);
1237                 }
1238                 }
1239                 break;
1240         case ACB_ADAPTER_TYPE_D: {
1241                 struct MessageUnit_D  *pmu = acb->pmuD;
1242                 uint32_t outbound_write_pointer;
1243                 uint32_t doneq_index, index_stripped, addressLow, residual, toggle;
1244                 unsigned long flags;
1245
1246                 residual = atomic_read(&acb->ccboutstandingcount);
1247                 for (i = 0; i < residual; i++) {
1248                         spin_lock_irqsave(&acb->doneq_lock, flags);
1249                         outbound_write_pointer =
1250                                 pmu->done_qbuffer[0].addressLow + 1;
1251                         doneq_index = pmu->doneq_index;
1252                         if ((doneq_index & 0xFFF) !=
1253                                 (outbound_write_pointer & 0xFFF)) {
1254                                 toggle = doneq_index & 0x4000;
1255                                 index_stripped = (doneq_index & 0xFFF) + 1;
1256                                 index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
1257                                 pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
1258                                         ((toggle ^ 0x4000) + 1);
1259                                 doneq_index = pmu->doneq_index;
1260                                 spin_unlock_irqrestore(&acb->doneq_lock, flags);
1261                                 addressLow = pmu->done_qbuffer[doneq_index &
1262                                         0xFFF].addressLow;
1263                                 ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
1264                                 pARCMSR_CDB = (struct  ARCMSR_CDB *)
1265                                         (acb->vir2phy_offset + ccb_cdb_phy);
1266                                 pCCB = container_of(pARCMSR_CDB,
1267                                         struct CommandControlBlock, arcmsr_cdb);
1268                                 error = (addressLow &
1269                                         ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ?
1270                                         true : false;
1271                                 arcmsr_drain_donequeue(acb, pCCB, error);
1272                                 writel(doneq_index,
1273                                         pmu->outboundlist_read_pointer);
1274                         } else {
1275                                 spin_unlock_irqrestore(&acb->doneq_lock, flags);
1276                                 mdelay(10);
1277                         }
1278                 }
1279                 pmu->postq_index = 0;
1280                 pmu->doneq_index = 0x40FF;
1281                 }
1282                 break;
1283         }
1284 }
1285
1286 static void arcmsr_remove(struct pci_dev *pdev)
1287 {
1288         struct Scsi_Host *host = pci_get_drvdata(pdev);
1289         struct AdapterControlBlock *acb =
1290                 (struct AdapterControlBlock *) host->hostdata;
1291         int poll_count = 0;
1292         arcmsr_free_sysfs_attr(acb);
1293         scsi_remove_host(host);
1294         flush_work(&acb->arcmsr_do_message_isr_bh);
1295         del_timer_sync(&acb->eternal_timer);
1296         arcmsr_disable_outbound_ints(acb);
1297         arcmsr_stop_adapter_bgrb(acb);
1298         arcmsr_flush_adapter_cache(acb);
1299         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1300         acb->acb_flags &= ~ACB_F_IOP_INITED;
1301
1302         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1303                 if (!atomic_read(&acb->ccboutstandingcount))
1304                         break;
1305                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1306                 msleep(25);
1307         }
1308
1309         if (atomic_read(&acb->ccboutstandingcount)) {
1310                 int i;
1311
1312                 arcmsr_abort_allcmd(acb);
1313                 arcmsr_done4abort_postqueue(acb);
1314                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1315                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
1316                         if (ccb->startdone == ARCMSR_CCB_START) {
1317                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1318                                 ccb->pcmd->result = DID_ABORT << 16;
1319                                 arcmsr_ccb_complete(ccb);
1320                         }
1321                 }
1322         }
1323         arcmsr_free_irq(pdev, acb);
1324         arcmsr_free_ccb_pool(acb);
1325         arcmsr_free_mu(acb);
1326         arcmsr_unmap_pciregion(acb);
1327         pci_release_regions(pdev);
1328         scsi_host_put(host);
1329         pci_disable_device(pdev);
1330 }
1331
1332 static void arcmsr_shutdown(struct pci_dev *pdev)
1333 {
1334         struct Scsi_Host *host = pci_get_drvdata(pdev);
1335         struct AdapterControlBlock *acb =
1336                 (struct AdapterControlBlock *)host->hostdata;
1337         del_timer_sync(&acb->eternal_timer);
1338         arcmsr_disable_outbound_ints(acb);
1339         arcmsr_free_irq(pdev, acb);
1340         flush_work(&acb->arcmsr_do_message_isr_bh);
1341         arcmsr_stop_adapter_bgrb(acb);
1342         arcmsr_flush_adapter_cache(acb);
1343 }
1344
1345 static int arcmsr_module_init(void)
1346 {
1347         int error = 0;
1348         error = pci_register_driver(&arcmsr_pci_driver);
1349         return error;
1350 }
1351
1352 static void arcmsr_module_exit(void)
1353 {
1354         pci_unregister_driver(&arcmsr_pci_driver);
1355 }
1356 module_init(arcmsr_module_init);
1357 module_exit(arcmsr_module_exit);
1358
1359 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1360                                                 u32 intmask_org)
1361 {
1362         u32 mask;
1363         switch (acb->adapter_type) {
1364
1365         case ACB_ADAPTER_TYPE_A: {
1366                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1367                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1368                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1369                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1370                 writel(mask, &reg->outbound_intmask);
1371                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1372                 }
1373                 break;
1374
1375         case ACB_ADAPTER_TYPE_B: {
1376                 struct MessageUnit_B *reg = acb->pmuB;
1377                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1378                         ARCMSR_IOP2DRV_DATA_READ_OK |
1379                         ARCMSR_IOP2DRV_CDB_DONE |
1380                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1381                 writel(mask, reg->iop2drv_doorbell_mask);
1382                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1383                 }
1384                 break;
1385         case ACB_ADAPTER_TYPE_C: {
1386                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1387                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1388                 writel(intmask_org & mask, &reg->host_int_mask);
1389                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1390                 }
1391                 break;
1392         case ACB_ADAPTER_TYPE_D: {
1393                 struct MessageUnit_D *reg = acb->pmuD;
1394
1395                 mask = ARCMSR_ARC1214_ALL_INT_ENABLE;
1396                 writel(intmask_org | mask, reg->pcief0_int_enable);
1397                 break;
1398                 }
1399         }
1400 }
1401
1402 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1403         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1404 {
1405         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1406         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1407         __le32 address_lo, address_hi;
1408         int arccdbsize = 0x30;
1409         __le32 length = 0;
1410         int i;
1411         struct scatterlist *sg;
1412         int nseg;
1413         ccb->pcmd = pcmd;
1414         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1415         arcmsr_cdb->TargetID = pcmd->device->id;
1416         arcmsr_cdb->LUN = pcmd->device->lun;
1417         arcmsr_cdb->Function = 1;
1418         arcmsr_cdb->msgContext = 0;
1419         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1420
1421         nseg = scsi_dma_map(pcmd);
1422         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1423                 return FAILED;
1424         scsi_for_each_sg(pcmd, sg, nseg, i) {
1425                 /* Get the physical address of the current data pointer */
1426                 length = cpu_to_le32(sg_dma_len(sg));
1427                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1428                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1429                 if (address_hi == 0) {
1430                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1431
1432                         pdma_sg->address = address_lo;
1433                         pdma_sg->length = length;
1434                         psge += sizeof (struct SG32ENTRY);
1435                         arccdbsize += sizeof (struct SG32ENTRY);
1436                 } else {
1437                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1438
1439                         pdma_sg->addresshigh = address_hi;
1440                         pdma_sg->address = address_lo;
1441                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1442                         psge += sizeof (struct SG64ENTRY);
1443                         arccdbsize += sizeof (struct SG64ENTRY);
1444                 }
1445         }
1446         arcmsr_cdb->sgcount = (uint8_t)nseg;
1447         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1448         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1449         if ( arccdbsize > 256)
1450                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1451         if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1452                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1453         ccb->arc_cdb_size = arccdbsize;
1454         return SUCCESS;
1455 }
1456
1457 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1458 {
1459         uint32_t cdb_phyaddr = ccb->cdb_phyaddr;
1460         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1461         atomic_inc(&acb->ccboutstandingcount);
1462         ccb->startdone = ARCMSR_CCB_START;
1463         switch (acb->adapter_type) {
1464         case ACB_ADAPTER_TYPE_A: {
1465                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1466
1467                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1468                         writel(cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1469                         &reg->inbound_queueport);
1470                 else
1471                         writel(cdb_phyaddr, &reg->inbound_queueport);
1472                 break;
1473         }
1474
1475         case ACB_ADAPTER_TYPE_B: {
1476                 struct MessageUnit_B *reg = acb->pmuB;
1477                 uint32_t ending_index, index = reg->postq_index;
1478
1479                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1480                 reg->post_qbuffer[ending_index] = 0;
1481                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1482                         reg->post_qbuffer[index] =
1483                                 cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE;
1484                 } else {
1485                         reg->post_qbuffer[index] = cdb_phyaddr;
1486                 }
1487                 index++;
1488                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1489                 reg->postq_index = index;
1490                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1491                 }
1492                 break;
1493         case ACB_ADAPTER_TYPE_C: {
1494                 struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
1495                 uint32_t ccb_post_stamp, arc_cdb_size;
1496
1497                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1498                 ccb_post_stamp = (cdb_phyaddr | ((arc_cdb_size - 1) >> 6) | 1);
1499                 if (acb->cdb_phyaddr_hi32) {
1500                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1501                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1502                 } else {
1503                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1504                 }
1505                 }
1506                 break;
1507         case ACB_ADAPTER_TYPE_D: {
1508                 struct MessageUnit_D  *pmu = acb->pmuD;
1509                 u16 index_stripped;
1510                 u16 postq_index, toggle;
1511                 unsigned long flags;
1512                 struct InBound_SRB *pinbound_srb;
1513
1514                 spin_lock_irqsave(&acb->postq_lock, flags);
1515                 postq_index = pmu->postq_index;
1516                 pinbound_srb = (struct InBound_SRB *)&(pmu->post_qbuffer[postq_index & 0xFF]);
1517                 pinbound_srb->addressHigh = dma_addr_hi32(cdb_phyaddr);
1518                 pinbound_srb->addressLow = dma_addr_lo32(cdb_phyaddr);
1519                 pinbound_srb->length = ccb->arc_cdb_size >> 2;
1520                 arcmsr_cdb->msgContext = dma_addr_lo32(cdb_phyaddr);
1521                 toggle = postq_index & 0x4000;
1522                 index_stripped = postq_index + 1;
1523                 index_stripped &= (ARCMSR_MAX_ARC1214_POSTQUEUE - 1);
1524                 pmu->postq_index = index_stripped ? (index_stripped | toggle) :
1525                         (toggle ^ 0x4000);
1526                 writel(postq_index, pmu->inboundlist_write_pointer);
1527                 spin_unlock_irqrestore(&acb->postq_lock, flags);
1528                 break;
1529                 }
1530         }
1531 }
1532
1533 static void arcmsr_hbaA_stop_bgrb(struct AdapterControlBlock *acb)
1534 {
1535         struct MessageUnit_A __iomem *reg = acb->pmuA;
1536         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1537         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1538         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
1539                 printk(KERN_NOTICE
1540                         "arcmsr%d: wait 'stop adapter background rebulid' timeout\n"
1541                         , acb->host->host_no);
1542         }
1543 }
1544
1545 static void arcmsr_hbaB_stop_bgrb(struct AdapterControlBlock *acb)
1546 {
1547         struct MessageUnit_B *reg = acb->pmuB;
1548         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1549         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1550
1551         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
1552                 printk(KERN_NOTICE
1553                         "arcmsr%d: wait 'stop adapter background rebulid' timeout\n"
1554                         , acb->host->host_no);
1555         }
1556 }
1557
1558 static void arcmsr_hbaC_stop_bgrb(struct AdapterControlBlock *pACB)
1559 {
1560         struct MessageUnit_C __iomem *reg = pACB->pmuC;
1561         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1562         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1563         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1564         if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
1565                 printk(KERN_NOTICE
1566                         "arcmsr%d: wait 'stop adapter background rebulid' timeout\n"
1567                         , pACB->host->host_no);
1568         }
1569         return;
1570 }
1571
1572 static void arcmsr_hbaD_stop_bgrb(struct AdapterControlBlock *pACB)
1573 {
1574         struct MessageUnit_D *reg = pACB->pmuD;
1575
1576         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1577         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, reg->inbound_msgaddr0);
1578         if (!arcmsr_hbaD_wait_msgint_ready(pACB))
1579                 pr_notice("arcmsr%d: wait 'stop adapter background rebulid' "
1580                         "timeout\n", pACB->host->host_no);
1581 }
1582
1583 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1584 {
1585         switch (acb->adapter_type) {
1586         case ACB_ADAPTER_TYPE_A: {
1587                 arcmsr_hbaA_stop_bgrb(acb);
1588                 }
1589                 break;
1590
1591         case ACB_ADAPTER_TYPE_B: {
1592                 arcmsr_hbaB_stop_bgrb(acb);
1593                 }
1594                 break;
1595         case ACB_ADAPTER_TYPE_C: {
1596                 arcmsr_hbaC_stop_bgrb(acb);
1597                 }
1598                 break;
1599         case ACB_ADAPTER_TYPE_D:
1600                 arcmsr_hbaD_stop_bgrb(acb);
1601                 break;
1602         }
1603 }
1604
1605 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1606 {
1607         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1608 }
1609
1610 static void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1611 {
1612         switch (acb->adapter_type) {
1613         case ACB_ADAPTER_TYPE_A: {
1614                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1615                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1616                 }
1617                 break;
1618
1619         case ACB_ADAPTER_TYPE_B: {
1620                 struct MessageUnit_B *reg = acb->pmuB;
1621                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1622                 }
1623                 break;
1624         case ACB_ADAPTER_TYPE_C: {
1625                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1626
1627                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1628                 }
1629                 break;
1630         case ACB_ADAPTER_TYPE_D: {
1631                 struct MessageUnit_D *reg = acb->pmuD;
1632                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
1633                         reg->inbound_doorbell);
1634                 }
1635                 break;
1636         }
1637 }
1638
1639 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1640 {
1641         switch (acb->adapter_type) {
1642         case ACB_ADAPTER_TYPE_A: {
1643                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1644                 /*
1645                 ** push inbound doorbell tell iop, driver data write ok
1646                 ** and wait reply on next hwinterrupt for next Qbuffer post
1647                 */
1648                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1649                 }
1650                 break;
1651
1652         case ACB_ADAPTER_TYPE_B: {
1653                 struct MessageUnit_B *reg = acb->pmuB;
1654                 /*
1655                 ** push inbound doorbell tell iop, driver data write ok
1656                 ** and wait reply on next hwinterrupt for next Qbuffer post
1657                 */
1658                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1659                 }
1660                 break;
1661         case ACB_ADAPTER_TYPE_C: {
1662                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1663                 /*
1664                 ** push inbound doorbell tell iop, driver data write ok
1665                 ** and wait reply on next hwinterrupt for next Qbuffer post
1666                 */
1667                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1668                 }
1669                 break;
1670         case ACB_ADAPTER_TYPE_D: {
1671                 struct MessageUnit_D *reg = acb->pmuD;
1672                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_IN_READY,
1673                         reg->inbound_doorbell);
1674                 }
1675                 break;
1676         }
1677 }
1678
1679 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1680 {
1681         struct QBUFFER __iomem *qbuffer = NULL;
1682         switch (acb->adapter_type) {
1683
1684         case ACB_ADAPTER_TYPE_A: {
1685                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1686                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1687                 }
1688                 break;
1689
1690         case ACB_ADAPTER_TYPE_B: {
1691                 struct MessageUnit_B *reg = acb->pmuB;
1692                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1693                 }
1694                 break;
1695         case ACB_ADAPTER_TYPE_C: {
1696                 struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
1697                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1698                 }
1699                 break;
1700         case ACB_ADAPTER_TYPE_D: {
1701                 struct MessageUnit_D *reg = acb->pmuD;
1702                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1703                 }
1704                 break;
1705         }
1706         return qbuffer;
1707 }
1708
1709 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1710 {
1711         struct QBUFFER __iomem *pqbuffer = NULL;
1712         switch (acb->adapter_type) {
1713
1714         case ACB_ADAPTER_TYPE_A: {
1715                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1716                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1717                 }
1718                 break;
1719
1720         case ACB_ADAPTER_TYPE_B: {
1721                 struct MessageUnit_B  *reg = acb->pmuB;
1722                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1723                 }
1724                 break;
1725         case ACB_ADAPTER_TYPE_C: {
1726                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1727                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1728                 }
1729                 break;
1730         case ACB_ADAPTER_TYPE_D: {
1731                 struct MessageUnit_D *reg = acb->pmuD;
1732                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1733                 }
1734                 break;
1735         }
1736         return pqbuffer;
1737 }
1738
1739 static uint32_t
1740 arcmsr_Read_iop_rqbuffer_in_DWORD(struct AdapterControlBlock *acb,
1741                 struct QBUFFER __iomem *prbuffer)
1742 {
1743         uint8_t *pQbuffer;
1744         uint8_t *buf1 = NULL;
1745         uint32_t __iomem *iop_data;
1746         uint32_t iop_len, data_len, *buf2 = NULL;
1747
1748         iop_data = (uint32_t __iomem *)prbuffer->data;
1749         iop_len = readl(&prbuffer->data_len);
1750         if (iop_len > 0) {
1751                 buf1 = kmalloc(128, GFP_ATOMIC);
1752                 buf2 = (uint32_t *)buf1;
1753                 if (buf1 == NULL)
1754                         return 0;
1755                 data_len = iop_len;
1756                 while (data_len >= 4) {
1757                         *buf2++ = readl(iop_data);
1758                         iop_data++;
1759                         data_len -= 4;
1760                 }
1761                 if (data_len)
1762                         *buf2 = readl(iop_data);
1763                 buf2 = (uint32_t *)buf1;
1764         }
1765         while (iop_len > 0) {
1766                 pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
1767                 *pQbuffer = *buf1;
1768                 acb->rqbuf_putIndex++;
1769                 /* if last, index number set it to 0 */
1770                 acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
1771                 buf1++;
1772                 iop_len--;
1773         }
1774         kfree(buf2);
1775         /* let IOP know data has been read */
1776         arcmsr_iop_message_read(acb);
1777         return 1;
1778 }
1779
1780 uint32_t
1781 arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *acb,
1782         struct QBUFFER __iomem *prbuffer) {
1783
1784         uint8_t *pQbuffer;
1785         uint8_t __iomem *iop_data;
1786         uint32_t iop_len;
1787
1788         if (acb->adapter_type & (ACB_ADAPTER_TYPE_C | ACB_ADAPTER_TYPE_D))
1789                 return arcmsr_Read_iop_rqbuffer_in_DWORD(acb, prbuffer);
1790         iop_data = (uint8_t __iomem *)prbuffer->data;
1791         iop_len = readl(&prbuffer->data_len);
1792         while (iop_len > 0) {
1793                 pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
1794                 *pQbuffer = readb(iop_data);
1795                 acb->rqbuf_putIndex++;
1796                 acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
1797                 iop_data++;
1798                 iop_len--;
1799         }
1800         arcmsr_iop_message_read(acb);
1801         return 1;
1802 }
1803
1804 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1805 {
1806         unsigned long flags;
1807         struct QBUFFER __iomem  *prbuffer;
1808         int32_t buf_empty_len;
1809
1810         spin_lock_irqsave(&acb->rqbuffer_lock, flags);
1811         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1812         buf_empty_len = (acb->rqbuf_putIndex - acb->rqbuf_getIndex - 1) &
1813                 (ARCMSR_MAX_QBUFFER - 1);
1814         if (buf_empty_len >= readl(&prbuffer->data_len)) {
1815                 if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
1816                         acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1817         } else
1818                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1819         spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
1820 }
1821
1822 static void arcmsr_write_ioctldata2iop_in_DWORD(struct AdapterControlBlock *acb)
1823 {
1824         uint8_t *pQbuffer;
1825         struct QBUFFER __iomem *pwbuffer;
1826         uint8_t *buf1 = NULL;
1827         uint32_t __iomem *iop_data;
1828         uint32_t allxfer_len = 0, data_len, *buf2 = NULL, data;
1829
1830         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1831                 buf1 = kmalloc(128, GFP_ATOMIC);
1832                 buf2 = (uint32_t *)buf1;
1833                 if (buf1 == NULL)
1834                         return;
1835
1836                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1837                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1838                 iop_data = (uint32_t __iomem *)pwbuffer->data;
1839                 while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
1840                         && (allxfer_len < 124)) {
1841                         pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
1842                         *buf1 = *pQbuffer;
1843                         acb->wqbuf_getIndex++;
1844                         acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
1845                         buf1++;
1846                         allxfer_len++;
1847                 }
1848                 data_len = allxfer_len;
1849                 buf1 = (uint8_t *)buf2;
1850                 while (data_len >= 4) {
1851                         data = *buf2++;
1852                         writel(data, iop_data);
1853                         iop_data++;
1854                         data_len -= 4;
1855                 }
1856                 if (data_len) {
1857                         data = *buf2;
1858                         writel(data, iop_data);
1859                 }
1860                 writel(allxfer_len, &pwbuffer->data_len);
1861                 kfree(buf1);
1862                 arcmsr_iop_message_wrote(acb);
1863         }
1864 }
1865
1866 void
1867 arcmsr_write_ioctldata2iop(struct AdapterControlBlock *acb)
1868 {
1869         uint8_t *pQbuffer;
1870         struct QBUFFER __iomem *pwbuffer;
1871         uint8_t __iomem *iop_data;
1872         int32_t allxfer_len = 0;
1873
1874         if (acb->adapter_type & (ACB_ADAPTER_TYPE_C | ACB_ADAPTER_TYPE_D)) {
1875                 arcmsr_write_ioctldata2iop_in_DWORD(acb);
1876                 return;
1877         }
1878         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1879                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1880                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1881                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1882                 while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
1883                         && (allxfer_len < 124)) {
1884                         pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
1885                         writeb(*pQbuffer, iop_data);
1886                         acb->wqbuf_getIndex++;
1887                         acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
1888                         iop_data++;
1889                         allxfer_len++;
1890                 }
1891                 writel(allxfer_len, &pwbuffer->data_len);
1892                 arcmsr_iop_message_wrote(acb);
1893         }
1894 }
1895
1896 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1897 {
1898         unsigned long flags;
1899
1900         spin_lock_irqsave(&acb->wqbuffer_lock, flags);
1901         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1902         if (acb->wqbuf_getIndex != acb->wqbuf_putIndex)
1903                 arcmsr_write_ioctldata2iop(acb);
1904         if (acb->wqbuf_getIndex == acb->wqbuf_putIndex)
1905                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1906         spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
1907 }
1908
1909 static void arcmsr_hbaA_doorbell_isr(struct AdapterControlBlock *acb)
1910 {
1911         uint32_t outbound_doorbell;
1912         struct MessageUnit_A __iomem *reg = acb->pmuA;
1913         outbound_doorbell = readl(&reg->outbound_doorbell);
1914         do {
1915                 writel(outbound_doorbell, &reg->outbound_doorbell);
1916                 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK)
1917                         arcmsr_iop2drv_data_wrote_handle(acb);
1918                 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK)
1919                         arcmsr_iop2drv_data_read_handle(acb);
1920                 outbound_doorbell = readl(&reg->outbound_doorbell);
1921         } while (outbound_doorbell & (ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK
1922                 | ARCMSR_OUTBOUND_IOP331_DATA_READ_OK));
1923 }
1924 static void arcmsr_hbaC_doorbell_isr(struct AdapterControlBlock *pACB)
1925 {
1926         uint32_t outbound_doorbell;
1927         struct MessageUnit_C __iomem *reg = pACB->pmuC;
1928         /*
1929         *******************************************************************
1930         **  Maybe here we need to check wrqbuffer_lock is lock or not
1931         **  DOORBELL: din! don!
1932         **  check if there are any mail need to pack from firmware
1933         *******************************************************************
1934         */
1935         outbound_doorbell = readl(&reg->outbound_doorbell);
1936         do {
1937                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
1938                 readl(&reg->outbound_doorbell_clear);
1939                 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK)
1940                         arcmsr_iop2drv_data_wrote_handle(pACB);
1941                 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK)
1942                         arcmsr_iop2drv_data_read_handle(pACB);
1943                 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE)
1944                         arcmsr_hbaC_message_isr(pACB);
1945                 outbound_doorbell = readl(&reg->outbound_doorbell);
1946         } while (outbound_doorbell & (ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK
1947                 | ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK
1948                 | ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE));
1949 }
1950
1951 static void arcmsr_hbaD_doorbell_isr(struct AdapterControlBlock *pACB)
1952 {
1953         uint32_t outbound_doorbell;
1954         struct MessageUnit_D  *pmu = pACB->pmuD;
1955
1956         outbound_doorbell = readl(pmu->outbound_doorbell);
1957         do {
1958                 writel(outbound_doorbell, pmu->outbound_doorbell);
1959                 if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE)
1960                         arcmsr_hbaD_message_isr(pACB);
1961                 if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK)
1962                         arcmsr_iop2drv_data_wrote_handle(pACB);
1963                 if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_DATA_READ_OK)
1964                         arcmsr_iop2drv_data_read_handle(pACB);
1965                 outbound_doorbell = readl(pmu->outbound_doorbell);
1966         } while (outbound_doorbell & (ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK
1967                 | ARCMSR_ARC1214_IOP2DRV_DATA_READ_OK
1968                 | ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE));
1969 }
1970
1971 static void arcmsr_hbaA_postqueue_isr(struct AdapterControlBlock *acb)
1972 {
1973         uint32_t flag_ccb;
1974         struct MessageUnit_A __iomem *reg = acb->pmuA;
1975         struct ARCMSR_CDB *pARCMSR_CDB;
1976         struct CommandControlBlock *pCCB;
1977         bool error;
1978         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1979                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1980                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1981                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1982                 arcmsr_drain_donequeue(acb, pCCB, error);
1983         }
1984 }
1985 static void arcmsr_hbaB_postqueue_isr(struct AdapterControlBlock *acb)
1986 {
1987         uint32_t index;
1988         uint32_t flag_ccb;
1989         struct MessageUnit_B *reg = acb->pmuB;
1990         struct ARCMSR_CDB *pARCMSR_CDB;
1991         struct CommandControlBlock *pCCB;
1992         bool error;
1993         index = reg->doneq_index;
1994         while ((flag_ccb = reg->done_qbuffer[index]) != 0) {
1995                 reg->done_qbuffer[index] = 0;
1996                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1997                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1998                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1999                 arcmsr_drain_donequeue(acb, pCCB, error);
2000                 index++;
2001                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2002                 reg->doneq_index = index;
2003         }
2004 }
2005
2006 static void arcmsr_hbaC_postqueue_isr(struct AdapterControlBlock *acb)
2007 {
2008         struct MessageUnit_C __iomem *phbcmu;
2009         struct ARCMSR_CDB *arcmsr_cdb;
2010         struct CommandControlBlock *ccb;
2011         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
2012         int error;
2013
2014         phbcmu = acb->pmuC;
2015         /* areca cdb command done */
2016         /* Use correct offset and size for syncing */
2017
2018         while ((flag_ccb = readl(&phbcmu->outbound_queueport_low)) !=
2019                         0xFFFFFFFF) {
2020                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2021                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset
2022                         + ccb_cdb_phy);
2023                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock,
2024                         arcmsr_cdb);
2025                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
2026                         ? true : false;
2027                 /* check if command done with no error */
2028                 arcmsr_drain_donequeue(acb, ccb, error);
2029                 throttling++;
2030                 if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
2031                         writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING,
2032                                 &phbcmu->inbound_doorbell);
2033                         throttling = 0;
2034                 }
2035         }
2036 }
2037
2038 static void arcmsr_hbaD_postqueue_isr(struct AdapterControlBlock *acb)
2039 {
2040         u32 outbound_write_pointer, doneq_index, index_stripped, toggle;
2041         uint32_t addressLow, ccb_cdb_phy;
2042         int error;
2043         struct MessageUnit_D  *pmu;
2044         struct ARCMSR_CDB *arcmsr_cdb;
2045         struct CommandControlBlock *ccb;
2046         unsigned long flags;
2047
2048         spin_lock_irqsave(&acb->doneq_lock, flags);
2049         pmu = acb->pmuD;
2050         outbound_write_pointer = pmu->done_qbuffer[0].addressLow + 1;
2051         doneq_index = pmu->doneq_index;
2052         if ((doneq_index & 0xFFF) != (outbound_write_pointer & 0xFFF)) {
2053                 do {
2054                         toggle = doneq_index & 0x4000;
2055                         index_stripped = (doneq_index & 0xFFF) + 1;
2056                         index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
2057                         pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
2058                                 ((toggle ^ 0x4000) + 1);
2059                         doneq_index = pmu->doneq_index;
2060                         addressLow = pmu->done_qbuffer[doneq_index &
2061                                 0xFFF].addressLow;
2062                         ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
2063                         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset
2064                                 + ccb_cdb_phy);
2065                         ccb = container_of(arcmsr_cdb,
2066                                 struct CommandControlBlock, arcmsr_cdb);
2067                         error = (addressLow & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
2068                                 ? true : false;
2069                         arcmsr_drain_donequeue(acb, ccb, error);
2070                         writel(doneq_index, pmu->outboundlist_read_pointer);
2071                 } while ((doneq_index & 0xFFF) !=
2072                         (outbound_write_pointer & 0xFFF));
2073         }
2074         writel(ARCMSR_ARC1214_OUTBOUND_LIST_INTERRUPT_CLEAR,
2075                 pmu->outboundlist_interrupt_cause);
2076         readl(pmu->outboundlist_interrupt_cause);
2077         spin_unlock_irqrestore(&acb->doneq_lock, flags);
2078 }
2079
2080 /*
2081 **********************************************************************************
2082 ** Handle a message interrupt
2083 **
2084 ** The only message interrupt we expect is in response to a query for the current adapter config.
2085 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
2086 **********************************************************************************
2087 */
2088 static void arcmsr_hbaA_message_isr(struct AdapterControlBlock *acb)
2089 {
2090         struct MessageUnit_A __iomem *reg  = acb->pmuA;
2091         /*clear interrupt and message state*/
2092         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
2093         schedule_work(&acb->arcmsr_do_message_isr_bh);
2094 }
2095 static void arcmsr_hbaB_message_isr(struct AdapterControlBlock *acb)
2096 {
2097         struct MessageUnit_B *reg  = acb->pmuB;
2098
2099         /*clear interrupt and message state*/
2100         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2101         schedule_work(&acb->arcmsr_do_message_isr_bh);
2102 }
2103 /*
2104 **********************************************************************************
2105 ** Handle a message interrupt
2106 **
2107 ** The only message interrupt we expect is in response to a query for the
2108 ** current adapter config.
2109 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
2110 **********************************************************************************
2111 */
2112 static void arcmsr_hbaC_message_isr(struct AdapterControlBlock *acb)
2113 {
2114         struct MessageUnit_C __iomem *reg  = acb->pmuC;
2115         /*clear interrupt and message state*/
2116         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
2117         schedule_work(&acb->arcmsr_do_message_isr_bh);
2118 }
2119
2120 static void arcmsr_hbaD_message_isr(struct AdapterControlBlock *acb)
2121 {
2122         struct MessageUnit_D *reg  = acb->pmuD;
2123
2124         writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE, reg->outbound_doorbell);
2125         readl(reg->outbound_doorbell);
2126         schedule_work(&acb->arcmsr_do_message_isr_bh);
2127 }
2128
2129 static int arcmsr_hbaA_handle_isr(struct AdapterControlBlock *acb)
2130 {
2131         uint32_t outbound_intstatus;
2132         struct MessageUnit_A __iomem *reg = acb->pmuA;
2133         outbound_intstatus = readl(&reg->outbound_intstatus) &
2134                 acb->outbound_int_enable;
2135         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
2136                 return IRQ_NONE;
2137         do {
2138                 writel(outbound_intstatus, &reg->outbound_intstatus);
2139                 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)
2140                         arcmsr_hbaA_doorbell_isr(acb);
2141                 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT)
2142                         arcmsr_hbaA_postqueue_isr(acb);
2143                 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)
2144                         arcmsr_hbaA_message_isr(acb);
2145                 outbound_intstatus = readl(&reg->outbound_intstatus) &
2146                         acb->outbound_int_enable;
2147         } while (outbound_intstatus & (ARCMSR_MU_OUTBOUND_DOORBELL_INT
2148                 | ARCMSR_MU_OUTBOUND_POSTQUEUE_INT
2149                 | ARCMSR_MU_OUTBOUND_MESSAGE0_INT));
2150         return IRQ_HANDLED;
2151 }
2152
2153 static int arcmsr_hbaB_handle_isr(struct AdapterControlBlock *acb)
2154 {
2155         uint32_t outbound_doorbell;
2156         struct MessageUnit_B *reg = acb->pmuB;
2157         outbound_doorbell = readl(reg->iop2drv_doorbell) &
2158                                 acb->outbound_int_enable;
2159         if (!outbound_doorbell)
2160                 return IRQ_NONE;
2161         do {
2162                 writel(~outbound_doorbell, reg->iop2drv_doorbell);
2163                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2164                 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK)
2165                         arcmsr_iop2drv_data_wrote_handle(acb);
2166                 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK)
2167                         arcmsr_iop2drv_data_read_handle(acb);
2168                 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE)
2169                         arcmsr_hbaB_postqueue_isr(acb);
2170                 if (outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE)
2171                         arcmsr_hbaB_message_isr(acb);
2172                 outbound_doorbell = readl(reg->iop2drv_doorbell) &
2173                         acb->outbound_int_enable;
2174         } while (outbound_doorbell & (ARCMSR_IOP2DRV_DATA_WRITE_OK
2175                 | ARCMSR_IOP2DRV_DATA_READ_OK
2176                 | ARCMSR_IOP2DRV_CDB_DONE
2177                 | ARCMSR_IOP2DRV_MESSAGE_CMD_DONE));
2178         return IRQ_HANDLED;
2179 }
2180
2181 static int arcmsr_hbaC_handle_isr(struct AdapterControlBlock *pACB)
2182 {
2183         uint32_t host_interrupt_status;
2184         struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
2185         /*
2186         *********************************************
2187         **   check outbound intstatus
2188         *********************************************
2189         */
2190         host_interrupt_status = readl(&phbcmu->host_int_status) &
2191                 (ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR |
2192                 ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR);
2193         if (!host_interrupt_status)
2194                 return IRQ_NONE;
2195         do {
2196                 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR)
2197                         arcmsr_hbaC_doorbell_isr(pACB);
2198                 /* MU post queue interrupts*/
2199                 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR)
2200                         arcmsr_hbaC_postqueue_isr(pACB);
2201                 host_interrupt_status = readl(&phbcmu->host_int_status);
2202         } while (host_interrupt_status & (ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR |
2203                 ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR));
2204         return IRQ_HANDLED;
2205 }
2206
2207 static irqreturn_t arcmsr_hbaD_handle_isr(struct AdapterControlBlock *pACB)
2208 {
2209         u32 host_interrupt_status;
2210         struct MessageUnit_D  *pmu = pACB->pmuD;
2211
2212         host_interrupt_status = readl(pmu->host_int_status) &
2213                 (ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
2214                 ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR);
2215         if (!host_interrupt_status)
2216                 return IRQ_NONE;
2217         do {
2218                 /* MU post queue interrupts*/
2219                 if (host_interrupt_status &
2220                         ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR)
2221                         arcmsr_hbaD_postqueue_isr(pACB);
2222                 if (host_interrupt_status &
2223                         ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR)
2224                         arcmsr_hbaD_doorbell_isr(pACB);
2225                 host_interrupt_status = readl(pmu->host_int_status);
2226         } while (host_interrupt_status &
2227                 (ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
2228                 ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR));
2229         return IRQ_HANDLED;
2230 }
2231
2232 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
2233 {
2234         switch (acb->adapter_type) {
2235         case ACB_ADAPTER_TYPE_A:
2236                 return arcmsr_hbaA_handle_isr(acb);
2237                 break;
2238         case ACB_ADAPTER_TYPE_B:
2239                 return arcmsr_hbaB_handle_isr(acb);
2240                 break;
2241         case ACB_ADAPTER_TYPE_C:
2242                 return arcmsr_hbaC_handle_isr(acb);
2243         case ACB_ADAPTER_TYPE_D:
2244                 return arcmsr_hbaD_handle_isr(acb);
2245         default:
2246                 return IRQ_NONE;
2247         }
2248 }
2249
2250 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
2251 {
2252         if (acb) {
2253                 /* stop adapter background rebuild */
2254                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
2255                         uint32_t intmask_org;
2256                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
2257                         intmask_org = arcmsr_disable_outbound_ints(acb);
2258                         arcmsr_stop_adapter_bgrb(acb);
2259                         arcmsr_flush_adapter_cache(acb);
2260                         arcmsr_enable_outbound_ints(acb, intmask_org);
2261                 }
2262         }
2263 }
2264
2265
2266 void arcmsr_clear_iop2drv_rqueue_buffer(struct AdapterControlBlock *acb)
2267 {
2268         uint32_t        i;
2269
2270         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
2271                 for (i = 0; i < 15; i++) {
2272                         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
2273                                 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
2274                                 acb->rqbuf_getIndex = 0;
2275                                 acb->rqbuf_putIndex = 0;
2276                                 arcmsr_iop_message_read(acb);
2277                                 mdelay(30);
2278                         } else if (acb->rqbuf_getIndex !=
2279                                    acb->rqbuf_putIndex) {
2280                                 acb->rqbuf_getIndex = 0;
2281                                 acb->rqbuf_putIndex = 0;
2282                                 mdelay(30);
2283                         } else
2284                                 break;
2285                 }
2286         }
2287 }
2288
2289 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
2290                 struct scsi_cmnd *cmd)
2291 {
2292         char *buffer;
2293         unsigned short use_sg;
2294         int retvalue = 0, transfer_len = 0;
2295         unsigned long flags;
2296         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
2297         uint32_t controlcode = (uint32_t)cmd->cmnd[5] << 24 |
2298                 (uint32_t)cmd->cmnd[6] << 16 |
2299                 (uint32_t)cmd->cmnd[7] << 8 |
2300                 (uint32_t)cmd->cmnd[8];
2301         struct scatterlist *sg;
2302
2303         use_sg = scsi_sg_count(cmd);
2304         sg = scsi_sglist(cmd);
2305         buffer = kmap_atomic(sg_page(sg)) + sg->offset;
2306         if (use_sg > 1) {
2307                 retvalue = ARCMSR_MESSAGE_FAIL;
2308                 goto message_out;
2309         }
2310         transfer_len += sg->length;
2311         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
2312                 retvalue = ARCMSR_MESSAGE_FAIL;
2313                 pr_info("%s: ARCMSR_MESSAGE_FAIL!\n", __func__);
2314                 goto message_out;
2315         }
2316         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *)buffer;
2317         switch (controlcode) {
2318         case ARCMSR_MESSAGE_READ_RQBUFFER: {
2319                 unsigned char *ver_addr;
2320                 uint8_t *ptmpQbuffer;
2321                 uint32_t allxfer_len = 0;
2322                 ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
2323                 if (!ver_addr) {
2324                         retvalue = ARCMSR_MESSAGE_FAIL;
2325                         pr_info("%s: memory not enough!\n", __func__);
2326                         goto message_out;
2327                 }
2328                 ptmpQbuffer = ver_addr;
2329                 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
2330                 if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) {
2331                         unsigned int tail = acb->rqbuf_getIndex;
2332                         unsigned int head = acb->rqbuf_putIndex;
2333                         unsigned int cnt_to_end = CIRC_CNT_TO_END(head, tail, ARCMSR_MAX_QBUFFER);
2334
2335                         allxfer_len = CIRC_CNT(head, tail, ARCMSR_MAX_QBUFFER);
2336                         if (allxfer_len > ARCMSR_API_DATA_BUFLEN)
2337                                 allxfer_len = ARCMSR_API_DATA_BUFLEN;
2338
2339                         if (allxfer_len <= cnt_to_end)
2340                                 memcpy(ptmpQbuffer, acb->rqbuffer + tail, allxfer_len);
2341                         else {
2342                                 memcpy(ptmpQbuffer, acb->rqbuffer + tail, cnt_to_end);
2343                                 memcpy(ptmpQbuffer + cnt_to_end, acb->rqbuffer, allxfer_len - cnt_to_end);
2344                         }
2345                         acb->rqbuf_getIndex = (acb->rqbuf_getIndex + allxfer_len) % ARCMSR_MAX_QBUFFER;
2346                 }
2347                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr,
2348                         allxfer_len);
2349                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
2350                         struct QBUFFER __iomem *prbuffer;
2351                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
2352                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
2353                         if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
2354                                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
2355                 }
2356                 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
2357                 kfree(ver_addr);
2358                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
2359                 if (acb->fw_flag == FW_DEADLOCK)
2360                         pcmdmessagefld->cmdmessage.ReturnCode =
2361                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2362                 else
2363                         pcmdmessagefld->cmdmessage.ReturnCode =
2364                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2365                 break;
2366         }
2367         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
2368                 unsigned char *ver_addr;
2369                 uint32_t user_len;
2370                 int32_t cnt2end;
2371                 uint8_t *pQbuffer, *ptmpuserbuffer;
2372
2373                 user_len = pcmdmessagefld->cmdmessage.Length;
2374                 if (user_len > ARCMSR_API_DATA_BUFLEN) {
2375                         retvalue = ARCMSR_MESSAGE_FAIL;
2376                         goto message_out;
2377                 }
2378
2379                 ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
2380                 if (!ver_addr) {
2381                         retvalue = ARCMSR_MESSAGE_FAIL;
2382                         goto message_out;
2383                 }
2384                 ptmpuserbuffer = ver_addr;
2385
2386                 memcpy(ptmpuserbuffer,
2387                         pcmdmessagefld->messagedatabuffer, user_len);
2388                 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
2389                 if (acb->wqbuf_putIndex != acb->wqbuf_getIndex) {
2390                         struct SENSE_DATA *sensebuffer =
2391                                 (struct SENSE_DATA *)cmd->sense_buffer;
2392                         arcmsr_write_ioctldata2iop(acb);
2393                         /* has error report sensedata */
2394                         sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
2395                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
2396                         sensebuffer->AdditionalSenseLength = 0x0A;
2397                         sensebuffer->AdditionalSenseCode = 0x20;
2398                         sensebuffer->Valid = 1;
2399                         retvalue = ARCMSR_MESSAGE_FAIL;
2400                 } else {
2401                         pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex];
2402                         cnt2end = ARCMSR_MAX_QBUFFER - acb->wqbuf_putIndex;
2403                         if (user_len > cnt2end) {
2404                                 memcpy(pQbuffer, ptmpuserbuffer, cnt2end);
2405                                 ptmpuserbuffer += cnt2end;
2406                                 user_len -= cnt2end;
2407                                 acb->wqbuf_putIndex = 0;
2408                                 pQbuffer = acb->wqbuffer;
2409                         }
2410                         memcpy(pQbuffer, ptmpuserbuffer, user_len);
2411                         acb->wqbuf_putIndex += user_len;
2412                         acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
2413                         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
2414                                 acb->acb_flags &=
2415                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
2416                                 arcmsr_write_ioctldata2iop(acb);
2417                         }
2418                 }
2419                 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
2420                 kfree(ver_addr);
2421                 if (acb->fw_flag == FW_DEADLOCK)
2422                         pcmdmessagefld->cmdmessage.ReturnCode =
2423                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2424                 else
2425                         pcmdmessagefld->cmdmessage.ReturnCode =
2426                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2427                 break;
2428         }
2429         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
2430                 uint8_t *pQbuffer = acb->rqbuffer;
2431
2432                 arcmsr_clear_iop2drv_rqueue_buffer(acb);
2433                 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
2434                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
2435                 acb->rqbuf_getIndex = 0;
2436                 acb->rqbuf_putIndex = 0;
2437                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
2438                 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
2439                 if (acb->fw_flag == FW_DEADLOCK)
2440                         pcmdmessagefld->cmdmessage.ReturnCode =
2441                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2442                 else
2443                         pcmdmessagefld->cmdmessage.ReturnCode =
2444                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2445                 break;
2446         }
2447         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
2448                 uint8_t *pQbuffer = acb->wqbuffer;
2449                 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
2450                 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
2451                         ACB_F_MESSAGE_WQBUFFER_READED);
2452                 acb->wqbuf_getIndex = 0;
2453                 acb->wqbuf_putIndex = 0;
2454                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
2455                 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
2456                 if (acb->fw_flag == FW_DEADLOCK)
2457                         pcmdmessagefld->cmdmessage.ReturnCode =
2458                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2459                 else
2460                         pcmdmessagefld->cmdmessage.ReturnCode =
2461                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2462                 break;
2463         }
2464         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
2465                 uint8_t *pQbuffer;
2466                 arcmsr_clear_iop2drv_rqueue_buffer(acb);
2467                 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
2468                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
2469                 acb->rqbuf_getIndex = 0;
2470                 acb->rqbuf_putIndex = 0;
2471                 pQbuffer = acb->rqbuffer;
2472                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
2473                 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
2474                 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
2475                 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
2476                         ACB_F_MESSAGE_WQBUFFER_READED);
2477                 acb->wqbuf_getIndex = 0;
2478                 acb->wqbuf_putIndex = 0;
2479                 pQbuffer = acb->wqbuffer;
2480                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
2481                 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
2482                 if (acb->fw_flag == FW_DEADLOCK)
2483                         pcmdmessagefld->cmdmessage.ReturnCode =
2484                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2485                 else
2486                         pcmdmessagefld->cmdmessage.ReturnCode =
2487                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2488                 break;
2489         }
2490         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
2491                 if (acb->fw_flag == FW_DEADLOCK)
2492                         pcmdmessagefld->cmdmessage.ReturnCode =
2493                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2494                 else
2495                         pcmdmessagefld->cmdmessage.ReturnCode =
2496                                 ARCMSR_MESSAGE_RETURNCODE_3F;
2497                 break;
2498         }
2499         case ARCMSR_MESSAGE_SAY_HELLO: {
2500                 int8_t *hello_string = "Hello! I am ARCMSR";
2501                 if (acb->fw_flag == FW_DEADLOCK)
2502                         pcmdmessagefld->cmdmessage.ReturnCode =
2503                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2504                 else
2505                         pcmdmessagefld->cmdmessage.ReturnCode =
2506                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2507                 memcpy(pcmdmessagefld->messagedatabuffer,
2508                         hello_string, (int16_t)strlen(hello_string));
2509                 break;
2510         }
2511         case ARCMSR_MESSAGE_SAY_GOODBYE: {
2512                 if (acb->fw_flag == FW_DEADLOCK)
2513                         pcmdmessagefld->cmdmessage.ReturnCode =
2514                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2515                 else
2516                         pcmdmessagefld->cmdmessage.ReturnCode =
2517                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2518                 arcmsr_iop_parking(acb);
2519                 break;
2520         }
2521         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: {
2522                 if (acb->fw_flag == FW_DEADLOCK)
2523                         pcmdmessagefld->cmdmessage.ReturnCode =
2524                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2525                 else
2526                         pcmdmessagefld->cmdmessage.ReturnCode =
2527                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2528                 arcmsr_flush_adapter_cache(acb);
2529                 break;
2530         }
2531         default:
2532                 retvalue = ARCMSR_MESSAGE_FAIL;
2533                 pr_info("%s: unknown controlcode!\n", __func__);
2534         }
2535 message_out:
2536         if (use_sg) {
2537                 struct scatterlist *sg = scsi_sglist(cmd);
2538                 kunmap_atomic(buffer - sg->offset);
2539         }
2540         return retvalue;
2541 }
2542
2543 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
2544 {
2545         struct list_head *head = &acb->ccb_free_list;
2546         struct CommandControlBlock *ccb = NULL;
2547         unsigned long flags;
2548         spin_lock_irqsave(&acb->ccblist_lock, flags);
2549         if (!list_empty(head)) {
2550                 ccb = list_entry(head->next, struct CommandControlBlock, list);
2551                 list_del_init(&ccb->list);
2552         }else{
2553                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2554                 return NULL;
2555         }
2556         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2557         return ccb;
2558 }
2559
2560 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2561                 struct scsi_cmnd *cmd)
2562 {
2563         switch (cmd->cmnd[0]) {
2564         case INQUIRY: {
2565                 unsigned char inqdata[36];
2566                 char *buffer;
2567                 struct scatterlist *sg;
2568
2569                 if (cmd->device->lun) {
2570                         cmd->result = (DID_TIME_OUT << 16);
2571                         cmd->scsi_done(cmd);
2572                         return;
2573                 }
2574                 inqdata[0] = TYPE_PROCESSOR;
2575                 /* Periph Qualifier & Periph Dev Type */
2576                 inqdata[1] = 0;
2577                 /* rem media bit & Dev Type Modifier */
2578                 inqdata[2] = 0;
2579                 /* ISO, ECMA, & ANSI versions */
2580                 inqdata[4] = 31;
2581                 /* length of additional data */
2582                 strncpy(&inqdata[8], "Areca   ", 8);
2583                 /* Vendor Identification */
2584                 strncpy(&inqdata[16], "RAID controller ", 16);
2585                 /* Product Identification */
2586                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2587
2588                 sg = scsi_sglist(cmd);
2589                 buffer = kmap_atomic(sg_page(sg)) + sg->offset;
2590
2591                 memcpy(buffer, inqdata, sizeof(inqdata));
2592                 sg = scsi_sglist(cmd);
2593                 kunmap_atomic(buffer - sg->offset);
2594
2595                 cmd->scsi_done(cmd);
2596         }
2597         break;
2598         case WRITE_BUFFER:
2599         case READ_BUFFER: {
2600                 if (arcmsr_iop_message_xfer(acb, cmd))
2601                         cmd->result = (DID_ERROR << 16);
2602                 cmd->scsi_done(cmd);
2603         }
2604         break;
2605         default:
2606                 cmd->scsi_done(cmd);
2607         }
2608 }
2609
2610 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2611         void (* done)(struct scsi_cmnd *))
2612 {
2613         struct Scsi_Host *host = cmd->device->host;
2614         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2615         struct CommandControlBlock *ccb;
2616         int target = cmd->device->id;
2617         cmd->scsi_done = done;
2618         cmd->host_scribble = NULL;
2619         cmd->result = 0;
2620         if (target == 16) {
2621                 /* virtual device for iop message transfer */
2622                 arcmsr_handle_virtual_command(acb, cmd);
2623                 return 0;
2624         }
2625         ccb = arcmsr_get_freeccb(acb);
2626         if (!ccb)
2627                 return SCSI_MLQUEUE_HOST_BUSY;
2628         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2629                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2630                 cmd->scsi_done(cmd);
2631                 return 0;
2632         }
2633         arcmsr_post_ccb(acb, ccb);
2634         return 0;
2635 }
2636
2637 static DEF_SCSI_QCMD(arcmsr_queue_command)
2638
2639 static bool arcmsr_hbaA_get_config(struct AdapterControlBlock *acb)
2640 {
2641         struct MessageUnit_A __iomem *reg = acb->pmuA;
2642         char *acb_firm_model = acb->firm_model;
2643         char *acb_firm_version = acb->firm_version;
2644         char *acb_device_map = acb->device_map;
2645         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2646         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2647         char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2648         int count;
2649         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2650         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
2651                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2652                         miscellaneous data' timeout \n", acb->host->host_no);
2653                 return false;
2654         }
2655         count = 8;
2656         while (count){
2657                 *acb_firm_model = readb(iop_firm_model);
2658                 acb_firm_model++;
2659                 iop_firm_model++;
2660                 count--;
2661         }
2662
2663         count = 16;
2664         while (count){
2665                 *acb_firm_version = readb(iop_firm_version);
2666                 acb_firm_version++;
2667                 iop_firm_version++;
2668                 count--;
2669         }
2670
2671         count=16;
2672         while(count){
2673                 *acb_device_map = readb(iop_device_map);
2674                 acb_device_map++;
2675                 iop_device_map++;
2676                 count--;
2677         }
2678         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2679                 acb->host->host_no,
2680                 acb->firm_model,
2681                 acb->firm_version);
2682         acb->signature = readl(&reg->message_rwbuffer[0]);
2683         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2684         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2685         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2686         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2687         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2688         return true;
2689 }
2690 static bool arcmsr_hbaB_get_config(struct AdapterControlBlock *acb)
2691 {
2692         struct MessageUnit_B *reg = acb->pmuB;
2693         char *acb_firm_model = acb->firm_model;
2694         char *acb_firm_version = acb->firm_version;
2695         char *acb_device_map = acb->device_map;
2696         char __iomem *iop_firm_model;
2697         /*firm_model,15,60-67*/
2698         char __iomem *iop_firm_version;
2699         /*firm_version,17,68-83*/
2700         char __iomem *iop_device_map;
2701         /*firm_version,21,84-99*/
2702         int count;
2703
2704         iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2705         iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2706         iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2707
2708         arcmsr_wait_firmware_ready(acb);
2709         writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
2710         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
2711                 printk(KERN_ERR "arcmsr%d: can't set driver mode.\n", acb->host->host_no);
2712                 return false;
2713         }
2714         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2715         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
2716                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2717                         miscellaneous data' timeout \n", acb->host->host_no);
2718                 return false;
2719         }
2720         count = 8;
2721         while (count){
2722                 *acb_firm_model = readb(iop_firm_model);
2723                 acb_firm_model++;
2724                 iop_firm_model++;
2725                 count--;
2726         }
2727         count = 16;
2728         while (count){
2729                 *acb_firm_version = readb(iop_firm_version);
2730                 acb_firm_version++;
2731                 iop_firm_version++;
2732                 count--;
2733         }
2734
2735         count = 16;
2736         while(count){
2737                 *acb_device_map = readb(iop_device_map);
2738                 acb_device_map++;
2739                 iop_device_map++;
2740                 count--;
2741         }
2742
2743         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2744                 acb->host->host_no,
2745                 acb->firm_model,
2746                 acb->firm_version);
2747
2748         acb->signature = readl(&reg->message_rwbuffer[0]);
2749         /*firm_signature,1,00-03*/
2750         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2751         /*firm_request_len,1,04-07*/
2752         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2753         /*firm_numbers_queue,2,08-11*/
2754         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2755         /*firm_sdram_size,3,12-15*/
2756         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2757         /*firm_ide_channels,4,16-19*/
2758         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2759         /*firm_ide_channels,4,16-19*/
2760         return true;
2761 }
2762
2763 static bool arcmsr_hbaC_get_config(struct AdapterControlBlock *pACB)
2764 {
2765         uint32_t intmask_org, Index, firmware_state = 0;
2766         struct MessageUnit_C __iomem *reg = pACB->pmuC;
2767         char *acb_firm_model = pACB->firm_model;
2768         char *acb_firm_version = pACB->firm_version;
2769         char __iomem *iop_firm_model = (char __iomem *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2770         char __iomem *iop_firm_version = (char __iomem *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2771         int count;
2772         /* disable all outbound interrupt */
2773         intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2774         writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2775         /* wait firmware ready */
2776         do {
2777                 firmware_state = readl(&reg->outbound_msgaddr1);
2778         } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2779         /* post "get config" instruction */
2780         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2781         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2782         /* wait message ready */
2783         for (Index = 0; Index < 2000; Index++) {
2784                 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2785                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2786                         break;
2787                 }
2788                 udelay(10);
2789         } /*max 1 seconds*/
2790         if (Index >= 2000) {
2791                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2792                         miscellaneous data' timeout \n", pACB->host->host_no);
2793                 return false;
2794         }
2795         count = 8;
2796         while (count) {
2797                 *acb_firm_model = readb(iop_firm_model);
2798                 acb_firm_model++;
2799                 iop_firm_model++;
2800                 count--;
2801         }
2802         count = 16;
2803         while (count) {
2804                 *acb_firm_version = readb(iop_firm_version);
2805                 acb_firm_version++;
2806                 iop_firm_version++;
2807                 count--;
2808         }
2809         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2810                 pACB->host->host_no,
2811                 pACB->firm_model,
2812                 pACB->firm_version);
2813         pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2814         pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2815         pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2816         pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2817         pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2818         /*all interrupt service will be enable at arcmsr_iop_init*/
2819         return true;
2820 }
2821
2822 static bool arcmsr_hbaD_get_config(struct AdapterControlBlock *acb)
2823 {
2824         char *acb_firm_model = acb->firm_model;
2825         char *acb_firm_version = acb->firm_version;
2826         char *acb_device_map = acb->device_map;
2827         char __iomem *iop_firm_model;
2828         char __iomem *iop_firm_version;
2829         char __iomem *iop_device_map;
2830         u32 count;
2831         struct MessageUnit_D *reg = acb->pmuD;
2832
2833         iop_firm_model = (char __iomem *)(&reg->msgcode_rwbuffer[15]);
2834         iop_firm_version = (char __iomem *)(&reg->msgcode_rwbuffer[17]);
2835         iop_device_map = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
2836         if (readl(acb->pmuD->outbound_doorbell) &
2837                 ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE) {
2838                 writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE,
2839                         acb->pmuD->outbound_doorbell);/*clear interrupt*/
2840         }
2841         /* post "get config" instruction */
2842         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, reg->inbound_msgaddr0);
2843         /* wait message ready */
2844         if (!arcmsr_hbaD_wait_msgint_ready(acb)) {
2845                 pr_notice("arcmsr%d: wait get adapter firmware "
2846                         "miscellaneous data timeout\n", acb->host->host_no);
2847                 return false;
2848         }
2849         count = 8;
2850         while (count) {
2851                 *acb_firm_model = readb(iop_firm_model);
2852                 acb_firm_model++;
2853                 iop_firm_model++;
2854                 count--;
2855         }
2856         count = 16;
2857         while (count) {
2858                 *acb_firm_version = readb(iop_firm_version);
2859                 acb_firm_version++;
2860                 iop_firm_version++;
2861                 count--;
2862         }
2863         count = 16;
2864         while (count) {
2865                 *acb_device_map = readb(iop_device_map);
2866                 acb_device_map++;
2867                 iop_device_map++;
2868                 count--;
2869         }
2870         acb->signature = readl(&reg->msgcode_rwbuffer[0]);
2871         /*firm_signature,1,00-03*/
2872         acb->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);
2873         /*firm_request_len,1,04-07*/
2874         acb->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]);
2875         /*firm_numbers_queue,2,08-11*/
2876         acb->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);
2877         /*firm_sdram_size,3,12-15*/
2878         acb->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);
2879         /*firm_hd_channels,4,16-19*/
2880         acb->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);
2881         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2882                 acb->host->host_no,
2883                 acb->firm_model,
2884                 acb->firm_version);
2885         return true;
2886 }
2887
2888 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2889 {
2890         bool rtn = false;
2891
2892         switch (acb->adapter_type) {
2893         case ACB_ADAPTER_TYPE_A:
2894                 rtn = arcmsr_hbaA_get_config(acb);
2895                 break;
2896         case ACB_ADAPTER_TYPE_B:
2897                 rtn = arcmsr_hbaB_get_config(acb);
2898                 break;
2899         case ACB_ADAPTER_TYPE_C:
2900                 rtn = arcmsr_hbaC_get_config(acb);
2901                 break;
2902         case ACB_ADAPTER_TYPE_D:
2903                 rtn = arcmsr_hbaD_get_config(acb);
2904                 break;
2905         default:
2906                 break;
2907         }
2908         if (acb->firm_numbers_queue > ARCMSR_MAX_OUTSTANDING_CMD)
2909                 acb->maxOutstanding = ARCMSR_MAX_OUTSTANDING_CMD;
2910         else
2911                 acb->maxOutstanding = acb->firm_numbers_queue - 1;
2912         acb->host->can_queue = acb->maxOutstanding;
2913         return rtn;
2914 }
2915
2916 static int arcmsr_hbaA_polling_ccbdone(struct AdapterControlBlock *acb,
2917         struct CommandControlBlock *poll_ccb)
2918 {
2919         struct MessageUnit_A __iomem *reg = acb->pmuA;
2920         struct CommandControlBlock *ccb;
2921         struct ARCMSR_CDB *arcmsr_cdb;
2922         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2923         int rtn;
2924         bool error;
2925         polling_hba_ccb_retry:
2926         poll_count++;
2927         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2928         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2929         while (1) {
2930                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2931                         if (poll_ccb_done){
2932                                 rtn = SUCCESS;
2933                                 break;
2934                         }else {
2935                                 msleep(25);
2936                                 if (poll_count > 100){
2937                                         rtn = FAILED;
2938                                         break;
2939                                 }
2940                                 goto polling_hba_ccb_retry;
2941                         }
2942                 }
2943                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2944                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2945                 poll_ccb_done |= (ccb == poll_ccb) ? 1 : 0;
2946                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2947                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2948                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2949                                         " poll command abort successfully \n"
2950                                         , acb->host->host_no
2951                                         , ccb->pcmd->device->id
2952                                         , (u32)ccb->pcmd->device->lun
2953                                         , ccb);
2954                                 ccb->pcmd->result = DID_ABORT << 16;
2955                                 arcmsr_ccb_complete(ccb);
2956                                 continue;
2957                         }
2958                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2959                                 " command done ccb = '0x%p'"
2960                                 "ccboutstandingcount = %d \n"
2961                                 , acb->host->host_no
2962                                 , ccb
2963                                 , atomic_read(&acb->ccboutstandingcount));
2964                         continue;
2965                 }
2966                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2967                 arcmsr_report_ccb_state(acb, ccb, error);
2968         }
2969         return rtn;
2970 }
2971
2972 static int arcmsr_hbaB_polling_ccbdone(struct AdapterControlBlock *acb,
2973                                         struct CommandControlBlock *poll_ccb)
2974 {
2975         struct MessageUnit_B *reg = acb->pmuB;
2976         struct ARCMSR_CDB *arcmsr_cdb;
2977         struct CommandControlBlock *ccb;
2978         uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2979         int index, rtn;
2980         bool error;
2981         polling_hbb_ccb_retry:
2982
2983         poll_count++;
2984         /* clear doorbell interrupt */
2985         writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2986         while(1){
2987                 index = reg->doneq_index;
2988                 flag_ccb = reg->done_qbuffer[index];
2989                 if (flag_ccb == 0) {
2990                         if (poll_ccb_done){
2991                                 rtn = SUCCESS;
2992                                 break;
2993                         }else {
2994                                 msleep(25);
2995                                 if (poll_count > 100){
2996                                         rtn = FAILED;
2997                                         break;
2998                                 }
2999                                 goto polling_hbb_ccb_retry;
3000                         }
3001                 }
3002                 reg->done_qbuffer[index] = 0;
3003                 index++;
3004                 /*if last index number set it to 0 */
3005                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
3006                 reg->doneq_index = index;
3007                 /* check if command done with no error*/
3008                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
3009                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
3010                 poll_ccb_done |= (ccb == poll_ccb) ? 1 : 0;
3011                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
3012                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
3013                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
3014                                         " poll command abort successfully \n"
3015                                         ,acb->host->host_no
3016                                         ,ccb->pcmd->device->id
3017                                         ,(u32)ccb->pcmd->device->lun
3018                                         ,ccb);
3019                                 ccb->pcmd->result = DID_ABORT << 16;
3020                                 arcmsr_ccb_complete(ccb);
3021                                 continue;
3022                         }
3023                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
3024                                 " command done ccb = '0x%p'"
3025                                 "ccboutstandingcount = %d \n"
3026                                 , acb->host->host_no
3027                                 , ccb
3028                                 , atomic_read(&acb->ccboutstandingcount));
3029                         continue;
3030                 }
3031                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
3032                 arcmsr_report_ccb_state(acb, ccb, error);
3033         }
3034         return rtn;
3035 }
3036
3037 static int arcmsr_hbaC_polling_ccbdone(struct AdapterControlBlock *acb,
3038                 struct CommandControlBlock *poll_ccb)
3039 {
3040         struct MessageUnit_C __iomem *reg = acb->pmuC;
3041         uint32_t flag_ccb, ccb_cdb_phy;
3042         struct ARCMSR_CDB *arcmsr_cdb;
3043         bool error;
3044         struct CommandControlBlock *pCCB;
3045         uint32_t poll_ccb_done = 0, poll_count = 0;
3046         int rtn;
3047 polling_hbc_ccb_retry:
3048         poll_count++;
3049         while (1) {
3050                 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
3051                         if (poll_ccb_done) {
3052                                 rtn = SUCCESS;
3053                                 break;
3054                         } else {
3055                                 msleep(25);
3056                                 if (poll_count > 100) {
3057                                         rtn = FAILED;
3058                                         break;
3059                                 }
3060                                 goto polling_hbc_ccb_retry;
3061                         }
3062                 }
3063                 flag_ccb = readl(&reg->outbound_queueport_low);
3064                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
3065                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
3066                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
3067                 poll_ccb_done |= (pCCB == poll_ccb) ? 1 : 0;
3068                 /* check ifcommand done with no error*/
3069                 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
3070                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
3071                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
3072                                         " poll command abort successfully \n"
3073                                         , acb->host->host_no
3074                                         , pCCB->pcmd->device->id
3075                                         , (u32)pCCB->pcmd->device->lun
3076                                         , pCCB);
3077                                         pCCB->pcmd->result = DID_ABORT << 16;
3078                                         arcmsr_ccb_complete(pCCB);
3079                                 continue;
3080                         }
3081                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
3082                                 " command done ccb = '0x%p'"
3083                                 "ccboutstandingcount = %d \n"
3084                                 , acb->host->host_no
3085                                 , pCCB
3086                                 , atomic_read(&acb->ccboutstandingcount));
3087                         continue;
3088                 }
3089                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
3090                 arcmsr_report_ccb_state(acb, pCCB, error);
3091         }
3092         return rtn;
3093 }
3094
3095 static int arcmsr_hbaD_polling_ccbdone(struct AdapterControlBlock *acb,
3096                                 struct CommandControlBlock *poll_ccb)
3097 {
3098         bool error;
3099         uint32_t poll_ccb_done = 0, poll_count = 0, flag_ccb, ccb_cdb_phy;
3100         int rtn, doneq_index, index_stripped, outbound_write_pointer, toggle;
3101         unsigned long flags;
3102         struct ARCMSR_CDB *arcmsr_cdb;
3103         struct CommandControlBlock *pCCB;
3104         struct MessageUnit_D *pmu = acb->pmuD;
3105
3106 polling_hbaD_ccb_retry:
3107         poll_count++;
3108         while (1) {
3109                 spin_lock_irqsave(&acb->doneq_lock, flags);
3110                 outbound_write_pointer = pmu->done_qbuffer[0].addressLow + 1;
3111                 doneq_index = pmu->doneq_index;
3112                 if ((outbound_write_pointer & 0xFFF) == (doneq_index & 0xFFF)) {
3113                         spin_unlock_irqrestore(&acb->doneq_lock, flags);
3114                         if (poll_ccb_done) {
3115                                 rtn = SUCCESS;
3116                                 break;
3117                         } else {
3118                                 msleep(25);
3119                                 if (poll_count > 40) {
3120                                         rtn = FAILED;
3121                                         break;
3122                                 }
3123                                 goto polling_hbaD_ccb_retry;
3124                         }
3125                 }
3126                 toggle = doneq_index & 0x4000;
3127                 index_stripped = (doneq_index & 0xFFF) + 1;
3128                 index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
3129                 pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
3130                                 ((toggle ^ 0x4000) + 1);
3131                 doneq_index = pmu->doneq_index;
3132                 spin_unlock_irqrestore(&acb->doneq_lock, flags);
3133                 flag_ccb = pmu->done_qbuffer[doneq_index & 0xFFF].addressLow;
3134                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
3135                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset +
3136                         ccb_cdb_phy);
3137                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock,
3138                         arcmsr_cdb);
3139                 poll_ccb_done |= (pCCB == poll_ccb) ? 1 : 0;
3140                 if ((pCCB->acb != acb) ||
3141                         (pCCB->startdone != ARCMSR_CCB_START)) {
3142                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
3143                                 pr_notice("arcmsr%d: scsi id = %d "
3144                                         "lun = %d ccb = '0x%p' poll command "
3145                                         "abort successfully\n"
3146                                         , acb->host->host_no
3147                                         , pCCB->pcmd->device->id
3148                                         , (u32)pCCB->pcmd->device->lun
3149                                         , pCCB);
3150                                 pCCB->pcmd->result = DID_ABORT << 16;
3151                                 arcmsr_ccb_complete(pCCB);
3152                                 continue;
3153                         }
3154                         pr_notice("arcmsr%d: polling an illegal "
3155                                 "ccb command done ccb = '0x%p' "
3156                                 "ccboutstandingcount = %d\n"
3157                                 , acb->host->host_no
3158                                 , pCCB
3159                                 , atomic_read(&acb->ccboutstandingcount));
3160                         continue;
3161                 }
3162                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
3163                         ? true : false;
3164                 arcmsr_report_ccb_state(acb, pCCB, error);
3165         }
3166         return rtn;
3167 }
3168
3169 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
3170                                         struct CommandControlBlock *poll_ccb)
3171 {
3172         int rtn = 0;
3173         switch (acb->adapter_type) {
3174
3175         case ACB_ADAPTER_TYPE_A: {
3176                 rtn = arcmsr_hbaA_polling_ccbdone(acb, poll_ccb);
3177                 }
3178                 break;
3179
3180         case ACB_ADAPTER_TYPE_B: {
3181                 rtn = arcmsr_hbaB_polling_ccbdone(acb, poll_ccb);
3182                 }
3183                 break;
3184         case ACB_ADAPTER_TYPE_C: {
3185                 rtn = arcmsr_hbaC_polling_ccbdone(acb, poll_ccb);
3186                 }
3187                 break;
3188         case ACB_ADAPTER_TYPE_D:
3189                 rtn = arcmsr_hbaD_polling_ccbdone(acb, poll_ccb);
3190                 break;
3191         }
3192         return rtn;
3193 }
3194
3195 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
3196 {
3197         uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
3198         dma_addr_t dma_coherent_handle;
3199
3200         /*
3201         ********************************************************************
3202         ** here we need to tell iop 331 our freeccb.HighPart
3203         ** if freeccb.HighPart is not zero
3204         ********************************************************************
3205         */
3206         switch (acb->adapter_type) {
3207         case ACB_ADAPTER_TYPE_B:
3208         case ACB_ADAPTER_TYPE_D:
3209                 dma_coherent_handle = acb->dma_coherent_handle2;
3210                 break;
3211         default:
3212                 dma_coherent_handle = acb->dma_coherent_handle;
3213                 break;
3214         }
3215         cdb_phyaddr = lower_32_bits(dma_coherent_handle);
3216         cdb_phyaddr_hi32 = upper_32_bits(dma_coherent_handle);
3217         acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
3218         /*
3219         ***********************************************************************
3220         **    if adapter type B, set window of "post command Q"
3221         ***********************************************************************
3222         */
3223         switch (acb->adapter_type) {
3224
3225         case ACB_ADAPTER_TYPE_A: {
3226                 if (cdb_phyaddr_hi32 != 0) {
3227                         struct MessageUnit_A __iomem *reg = acb->pmuA;
3228                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
3229                                                 &reg->message_rwbuffer[0]);
3230                         writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
3231                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
3232                                                         &reg->inbound_msgaddr0);
3233                         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
3234                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
3235                                 part physical address timeout\n",
3236                                 acb->host->host_no);
3237                                 return 1;
3238                         }
3239                 }
3240                 }
3241                 break;
3242
3243         case ACB_ADAPTER_TYPE_B: {
3244                 uint32_t __iomem *rwbuffer;
3245
3246                 struct MessageUnit_B *reg = acb->pmuB;
3247                 reg->postq_index = 0;
3248                 reg->doneq_index = 0;
3249                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
3250                 if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3251                         printk(KERN_NOTICE "arcmsr%d: cannot set driver mode\n", \
3252                                 acb->host->host_no);
3253                         return 1;
3254                 }
3255                 rwbuffer = reg->message_rwbuffer;
3256                 /* driver "set config" signature */
3257                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
3258                 /* normal should be zero */
3259                 writel(cdb_phyaddr_hi32, rwbuffer++);
3260                 /* postQ size (256 + 8)*4        */
3261                 writel(cdb_phyaddr, rwbuffer++);
3262                 /* doneQ size (256 + 8)*4        */
3263                 writel(cdb_phyaddr + 1056, rwbuffer++);
3264                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
3265                 writel(1056, rwbuffer);
3266
3267                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
3268                 if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3269                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
3270                         timeout \n",acb->host->host_no);
3271                         return 1;
3272                 }
3273                 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
3274                 if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3275                         pr_err("arcmsr%d: can't set driver mode.\n",
3276                                 acb->host->host_no);
3277                         return 1;
3278                 }
3279                 }
3280                 break;
3281         case ACB_ADAPTER_TYPE_C: {
3282                 if (cdb_phyaddr_hi32 != 0) {
3283                         struct MessageUnit_C __iomem *reg = acb->pmuC;
3284
3285                         printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
3286                                         acb->adapter_index, cdb_phyaddr_hi32);
3287                         writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
3288                         writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
3289                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
3290                         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
3291                         if (!arcmsr_hbaC_wait_msgint_ready(acb)) {
3292                                 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
3293                                 timeout \n", acb->host->host_no);
3294                                 return 1;
3295                         }
3296                 }
3297                 }
3298                 break;
3299         case ACB_ADAPTER_TYPE_D: {
3300                 uint32_t __iomem *rwbuffer;
3301                 struct MessageUnit_D *reg = acb->pmuD;
3302                 reg->postq_index = 0;
3303                 reg->doneq_index = 0;
3304                 rwbuffer = reg->msgcode_rwbuffer;
3305                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
3306                 writel(cdb_phyaddr_hi32, rwbuffer++);
3307                 writel(cdb_phyaddr, rwbuffer++);
3308                 writel(cdb_phyaddr + (ARCMSR_MAX_ARC1214_POSTQUEUE *
3309                         sizeof(struct InBound_SRB)), rwbuffer++);
3310                 writel(0x100, rwbuffer);
3311                 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, reg->inbound_msgaddr0);
3312                 if (!arcmsr_hbaD_wait_msgint_ready(acb)) {
3313                         pr_notice("arcmsr%d: 'set command Q window' timeout\n",
3314                                 acb->host->host_no);
3315                         return 1;
3316                 }
3317                 }
3318                 break;
3319         }
3320         return 0;
3321 }
3322
3323 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
3324 {
3325         uint32_t firmware_state = 0;
3326         switch (acb->adapter_type) {
3327
3328         case ACB_ADAPTER_TYPE_A: {
3329                 struct MessageUnit_A __iomem *reg = acb->pmuA;
3330                 do {
3331                         firmware_state = readl(&reg->outbound_msgaddr1);
3332                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
3333                 }
3334                 break;
3335
3336         case ACB_ADAPTER_TYPE_B: {
3337                 struct MessageUnit_B *reg = acb->pmuB;
3338                 do {
3339                         firmware_state = readl(reg->iop2drv_doorbell);
3340                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
3341                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
3342                 }
3343                 break;
3344         case ACB_ADAPTER_TYPE_C: {
3345                 struct MessageUnit_C __iomem *reg = acb->pmuC;
3346                 do {
3347                         firmware_state = readl(&reg->outbound_msgaddr1);
3348                 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
3349                 }
3350                 break;
3351         case ACB_ADAPTER_TYPE_D: {
3352                 struct MessageUnit_D *reg = acb->pmuD;
3353                 do {
3354                         firmware_state = readl(reg->outbound_msgaddr1);
3355                 } while ((firmware_state &
3356                         ARCMSR_ARC1214_MESSAGE_FIRMWARE_OK) == 0);
3357                 }
3358                 break;
3359         }
3360 }
3361
3362 static void arcmsr_hbaA_request_device_map(struct AdapterControlBlock *acb)
3363 {
3364         struct MessageUnit_A __iomem *reg = acb->pmuA;
3365         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
3366                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3367                 return;
3368         } else {
3369                 acb->fw_flag = FW_NORMAL;
3370                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
3371                         atomic_set(&acb->rq_map_token, 16);
3372                 }
3373                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
3374                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3375                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3376                         return;
3377                 }
3378                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
3379                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3380         }
3381         return;
3382 }
3383
3384 static void arcmsr_hbaB_request_device_map(struct AdapterControlBlock *acb)
3385 {
3386         struct MessageUnit_B *reg = acb->pmuB;
3387         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
3388                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3389                 return;
3390         } else {
3391                 acb->fw_flag = FW_NORMAL;
3392                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
3393                         atomic_set(&acb->rq_map_token, 16);
3394                 }
3395                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
3396                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3397                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3398                         return;
3399                 }
3400                 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
3401                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3402         }
3403         return;
3404 }
3405
3406 static void arcmsr_hbaC_request_device_map(struct AdapterControlBlock *acb)
3407 {
3408         struct MessageUnit_C __iomem *reg = acb->pmuC;
3409         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
3410                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3411                 return;
3412         } else {
3413                 acb->fw_flag = FW_NORMAL;
3414                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
3415                         atomic_set(&acb->rq_map_token, 16);
3416                 }
3417                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
3418                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3419                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3420                         return;
3421                 }
3422                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
3423                 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
3424                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3425         }
3426         return;
3427 }
3428
3429 static void arcmsr_hbaD_request_device_map(struct AdapterControlBlock *acb)
3430 {
3431         struct MessageUnit_D *reg = acb->pmuD;
3432
3433         if (unlikely(atomic_read(&acb->rq_map_token) == 0) ||
3434                 ((acb->acb_flags & ACB_F_BUS_RESET) != 0) ||
3435                 ((acb->acb_flags & ACB_F_ABORT) != 0)) {
3436                 mod_timer(&acb->eternal_timer,
3437                         jiffies + msecs_to_jiffies(6 * HZ));
3438         } else {
3439                 acb->fw_flag = FW_NORMAL;
3440                 if (atomic_read(&acb->ante_token_value) ==
3441                         atomic_read(&acb->rq_map_token)) {
3442                         atomic_set(&acb->rq_map_token, 16);
3443                 }
3444                 atomic_set(&acb->ante_token_value,
3445                         atomic_read(&acb->rq_map_token));
3446                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3447                         mod_timer(&acb->eternal_timer, jiffies +
3448                                 msecs_to_jiffies(6 * HZ));
3449                         return;
3450                 }
3451                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG,
3452                         reg->inbound_msgaddr0);
3453                 mod_timer(&acb->eternal_timer, jiffies +
3454                         msecs_to_jiffies(6 * HZ));
3455         }
3456 }
3457
3458 static void arcmsr_request_device_map(struct timer_list *t)
3459 {
3460         struct AdapterControlBlock *acb = from_timer(acb, t, eternal_timer);
3461         switch (acb->adapter_type) {
3462                 case ACB_ADAPTER_TYPE_A: {
3463                         arcmsr_hbaA_request_device_map(acb);
3464                 }
3465                 break;
3466                 case ACB_ADAPTER_TYPE_B: {
3467                         arcmsr_hbaB_request_device_map(acb);
3468                 }
3469                 break;
3470                 case ACB_ADAPTER_TYPE_C: {
3471                         arcmsr_hbaC_request_device_map(acb);
3472                 }
3473                 break;
3474                 case ACB_ADAPTER_TYPE_D:
3475                         arcmsr_hbaD_request_device_map(acb);
3476                 break;
3477         }
3478 }
3479
3480 static void arcmsr_hbaA_start_bgrb(struct AdapterControlBlock *acb)
3481 {
3482         struct MessageUnit_A __iomem *reg = acb->pmuA;
3483         acb->acb_flags |= ACB_F_MSG_START_BGRB;
3484         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
3485         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
3486                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
3487                                 rebulid' timeout \n", acb->host->host_no);
3488         }
3489 }
3490
3491 static void arcmsr_hbaB_start_bgrb(struct AdapterControlBlock *acb)
3492 {
3493         struct MessageUnit_B *reg = acb->pmuB;
3494         acb->acb_flags |= ACB_F_MSG_START_BGRB;
3495         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
3496         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3497                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
3498                                 rebulid' timeout \n",acb->host->host_no);
3499         }
3500 }
3501
3502 static void arcmsr_hbaC_start_bgrb(struct AdapterControlBlock *pACB)
3503 {
3504         struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
3505         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
3506         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
3507         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
3508         if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
3509                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
3510                                 rebulid' timeout \n", pACB->host->host_no);
3511         }
3512         return;
3513 }
3514
3515 static void arcmsr_hbaD_start_bgrb(struct AdapterControlBlock *pACB)
3516 {
3517         struct MessageUnit_D *pmu = pACB->pmuD;
3518
3519         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
3520         writel(ARCMSR_INBOUND_MESG0_START_BGRB, pmu->inbound_msgaddr0);
3521         if (!arcmsr_hbaD_wait_msgint_ready(pACB)) {
3522                 pr_notice("arcmsr%d: wait 'start adapter "
3523                         "background rebulid' timeout\n", pACB->host->host_no);
3524         }
3525 }
3526
3527 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
3528 {
3529         switch (acb->adapter_type) {
3530         case ACB_ADAPTER_TYPE_A:
3531                 arcmsr_hbaA_start_bgrb(acb);
3532                 break;
3533         case ACB_ADAPTER_TYPE_B:
3534                 arcmsr_hbaB_start_bgrb(acb);
3535                 break;
3536         case ACB_ADAPTER_TYPE_C:
3537                 arcmsr_hbaC_start_bgrb(acb);
3538                 break;
3539         case ACB_ADAPTER_TYPE_D:
3540                 arcmsr_hbaD_start_bgrb(acb);
3541                 break;
3542         }
3543 }
3544
3545 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
3546 {
3547         switch (acb->adapter_type) {
3548         case ACB_ADAPTER_TYPE_A: {
3549                 struct MessageUnit_A __iomem *reg = acb->pmuA;
3550                 uint32_t outbound_doorbell;
3551                 /* empty doorbell Qbuffer if door bell ringed */
3552                 outbound_doorbell = readl(&reg->outbound_doorbell);
3553                 /*clear doorbell interrupt */
3554                 writel(outbound_doorbell, &reg->outbound_doorbell);
3555                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
3556                 }
3557                 break;
3558
3559         case ACB_ADAPTER_TYPE_B: {
3560                 struct MessageUnit_B *reg = acb->pmuB;
3561                 /*clear interrupt and message state*/
3562                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
3563                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
3564                 /* let IOP know data has been read */
3565                 }
3566                 break;
3567         case ACB_ADAPTER_TYPE_C: {
3568                 struct MessageUnit_C __iomem *reg = acb->pmuC;
3569                 uint32_t outbound_doorbell, i;
3570                 /* empty doorbell Qbuffer if door bell ringed */
3571                 outbound_doorbell = readl(&reg->outbound_doorbell);
3572                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
3573                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3574                 for (i = 0; i < 200; i++) {
3575                         msleep(20);
3576                         outbound_doorbell = readl(&reg->outbound_doorbell);
3577                         if (outbound_doorbell &
3578                                 ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
3579                                 writel(outbound_doorbell,
3580                                         &reg->outbound_doorbell_clear);
3581                                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK,
3582                                         &reg->inbound_doorbell);
3583                         } else
3584                                 break;
3585                 }
3586                 }
3587                 break;
3588         case ACB_ADAPTER_TYPE_D: {
3589                 struct MessageUnit_D *reg = acb->pmuD;
3590                 uint32_t outbound_doorbell, i;
3591                 /* empty doorbell Qbuffer if door bell ringed */
3592                 outbound_doorbell = readl(reg->outbound_doorbell);
3593                 writel(outbound_doorbell, reg->outbound_doorbell);
3594                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
3595                         reg->inbound_doorbell);
3596                 for (i = 0; i < 200; i++) {
3597                         msleep(20);
3598                         outbound_doorbell = readl(reg->outbound_doorbell);
3599                         if (outbound_doorbell &
3600                                 ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK) {
3601                                 writel(outbound_doorbell,
3602                                         reg->outbound_doorbell);
3603                                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
3604                                         reg->inbound_doorbell);
3605                         } else
3606                                 break;
3607                 }
3608                 }
3609                 break;
3610         }
3611 }
3612
3613 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
3614 {
3615         switch (acb->adapter_type) {
3616         case ACB_ADAPTER_TYPE_A:
3617                 return;
3618         case ACB_ADAPTER_TYPE_B:
3619                 {
3620                         struct MessageUnit_B *reg = acb->pmuB;
3621                         writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
3622                         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3623                                 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
3624                                 return;
3625                         }
3626                 }
3627                 break;
3628         case ACB_ADAPTER_TYPE_C:
3629                 return;
3630         }
3631         return;
3632 }
3633
3634 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
3635 {
3636         uint8_t value[64];
3637         int i, count = 0;
3638         struct MessageUnit_A __iomem *pmuA = acb->pmuA;
3639         struct MessageUnit_C __iomem *pmuC = acb->pmuC;
3640         struct MessageUnit_D *pmuD = acb->pmuD;
3641
3642         /* backup pci config data */
3643         printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
3644         for (i = 0; i < 64; i++) {
3645                 pci_read_config_byte(acb->pdev, i, &value[i]);
3646         }
3647         /* hardware reset signal */
3648         if ((acb->dev_id == 0x1680)) {
3649                 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
3650         } else if ((acb->dev_id == 0x1880)) {
3651                 do {
3652                         count++;
3653                         writel(0xF, &pmuC->write_sequence);
3654                         writel(0x4, &pmuC->write_sequence);
3655                         writel(0xB, &pmuC->write_sequence);
3656                         writel(0x2, &pmuC->write_sequence);
3657                         writel(0x7, &pmuC->write_sequence);
3658                         writel(0xD, &pmuC->write_sequence);
3659                 } while (((readl(&pmuC->host_diagnostic) & ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
3660                 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
3661         } else if ((acb->dev_id == 0x1214)) {
3662                 writel(0x20, pmuD->reset_request);
3663         } else {
3664                 pci_write_config_byte(acb->pdev, 0x84, 0x20);
3665         }
3666         msleep(2000);
3667         /* write back pci config data */
3668         for (i = 0; i < 64; i++) {
3669                 pci_write_config_byte(acb->pdev, i, value[i]);
3670         }
3671         msleep(1000);
3672         return;
3673 }
3674 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
3675 {
3676         uint32_t intmask_org;
3677         /* disable all outbound interrupt */
3678         intmask_org = arcmsr_disable_outbound_ints(acb);
3679         arcmsr_wait_firmware_ready(acb);
3680         arcmsr_iop_confirm(acb);
3681         /*start background rebuild*/
3682         arcmsr_start_adapter_bgrb(acb);
3683         /* empty doorbell Qbuffer if door bell ringed */
3684         arcmsr_clear_doorbell_queue_buffer(acb);
3685         arcmsr_enable_eoi_mode(acb);
3686         /* enable outbound Post Queue,outbound doorbell Interrupt */
3687         arcmsr_enable_outbound_ints(acb, intmask_org);
3688         acb->acb_flags |= ACB_F_IOP_INITED;
3689 }
3690
3691 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
3692 {
3693         struct CommandControlBlock *ccb;
3694         uint32_t intmask_org;
3695         uint8_t rtnval = 0x00;
3696         int i = 0;
3697         unsigned long flags;
3698
3699         if (atomic_read(&acb->ccboutstandingcount) != 0) {
3700                 /* disable all outbound interrupt */
3701                 intmask_org = arcmsr_disable_outbound_ints(acb);
3702                 /* talk to iop 331 outstanding command aborted */
3703                 rtnval = arcmsr_abort_allcmd(acb);
3704                 /* clear all outbound posted Q */
3705                 arcmsr_done4abort_postqueue(acb);
3706                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3707                         ccb = acb->pccb_pool[i];
3708                         if (ccb->startdone == ARCMSR_CCB_START) {
3709                                 scsi_dma_unmap(ccb->pcmd);
3710                                 ccb->startdone = ARCMSR_CCB_DONE;
3711                                 ccb->ccb_flags = 0;
3712                                 spin_lock_irqsave(&acb->ccblist_lock, flags);
3713                                 list_add_tail(&ccb->list, &acb->ccb_free_list);
3714                                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
3715                         }
3716                 }
3717                 atomic_set(&acb->ccboutstandingcount, 0);
3718                 /* enable all outbound interrupt */
3719                 arcmsr_enable_outbound_ints(acb, intmask_org);
3720                 return rtnval;
3721         }
3722         return rtnval;
3723 }
3724
3725 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
3726 {
3727         struct AdapterControlBlock *acb;
3728         uint32_t intmask_org, outbound_doorbell;
3729         int retry_count = 0;
3730         int rtn = FAILED;
3731         acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
3732         printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
3733         acb->num_resets++;
3734
3735         switch(acb->adapter_type){
3736                 case ACB_ADAPTER_TYPE_A:{
3737                         if (acb->acb_flags & ACB_F_BUS_RESET){
3738                                 long timeout;
3739                                 printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
3740                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3741                                 if (timeout) {
3742                                         return SUCCESS;
3743                                 }
3744                         }
3745                         acb->acb_flags |= ACB_F_BUS_RESET;
3746                         if (!arcmsr_iop_reset(acb)) {
3747                                 struct MessageUnit_A __iomem *reg;
3748                                 reg = acb->pmuA;
3749                                 arcmsr_hardware_reset(acb);
3750                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3751 sleep_again:
3752                                 ssleep(ARCMSR_SLEEPTIME);
3753                                 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
3754                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3755                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3756                                                 acb->fw_flag = FW_DEADLOCK;
3757                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3758                                                 return FAILED;
3759                                         }
3760                                         retry_count++;
3761                                         goto sleep_again;
3762                                 }
3763                                 acb->acb_flags |= ACB_F_IOP_INITED;
3764                                 /* disable all outbound interrupt */
3765                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3766                                 arcmsr_get_firmware_spec(acb);
3767                                 arcmsr_start_adapter_bgrb(acb);
3768                                 /* clear Qbuffer if door bell ringed */
3769                                 outbound_doorbell = readl(&reg->outbound_doorbell);
3770                                 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
3771                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
3772                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3773                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3774                                 atomic_set(&acb->rq_map_token, 16);
3775                                 atomic_set(&acb->ante_token_value, 16);
3776                                 acb->fw_flag = FW_NORMAL;
3777                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3778                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3779                                 rtn = SUCCESS;
3780                                 printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
3781                         } else {
3782                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3783                                 atomic_set(&acb->rq_map_token, 16);
3784                                 atomic_set(&acb->ante_token_value, 16);
3785                                 acb->fw_flag = FW_NORMAL;
3786                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3787                                 rtn = SUCCESS;
3788                         }
3789                         break;
3790                 }
3791                 case ACB_ADAPTER_TYPE_B:{
3792                         acb->acb_flags |= ACB_F_BUS_RESET;
3793                         if (!arcmsr_iop_reset(acb)) {
3794                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3795                                 rtn = FAILED;
3796                         } else {
3797                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3798                                 atomic_set(&acb->rq_map_token, 16);
3799                                 atomic_set(&acb->ante_token_value, 16);
3800                                 acb->fw_flag = FW_NORMAL;
3801                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3802                                 rtn = SUCCESS;
3803                         }
3804                         break;
3805                 }
3806                 case ACB_ADAPTER_TYPE_C:{
3807                         if (acb->acb_flags & ACB_F_BUS_RESET) {
3808                                 long timeout;
3809                                 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
3810                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3811                                 if (timeout) {
3812                                         return SUCCESS;
3813                                 }
3814                         }
3815                         acb->acb_flags |= ACB_F_BUS_RESET;
3816                         if (!arcmsr_iop_reset(acb)) {
3817                                 struct MessageUnit_C __iomem *reg;
3818                                 reg = acb->pmuC;
3819                                 arcmsr_hardware_reset(acb);
3820                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3821 sleep:
3822                                 ssleep(ARCMSR_SLEEPTIME);
3823                                 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3824                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3825                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3826                                                 acb->fw_flag = FW_DEADLOCK;
3827                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3828                                                 return FAILED;
3829                                         }
3830                                         retry_count++;
3831                                         goto sleep;
3832                                 }
3833                                 acb->acb_flags |= ACB_F_IOP_INITED;
3834                                 /* disable all outbound interrupt */
3835                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3836                                 arcmsr_get_firmware_spec(acb);
3837                                 arcmsr_start_adapter_bgrb(acb);
3838                                 /* clear Qbuffer if door bell ringed */
3839                                 arcmsr_clear_doorbell_queue_buffer(acb);
3840                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3841                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3842                                 atomic_set(&acb->rq_map_token, 16);
3843                                 atomic_set(&acb->ante_token_value, 16);
3844                                 acb->fw_flag = FW_NORMAL;
3845                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3846                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3847                                 rtn = SUCCESS;
3848                                 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3849                         } else {
3850                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3851                                 atomic_set(&acb->rq_map_token, 16);
3852                                 atomic_set(&acb->ante_token_value, 16);
3853                                 acb->fw_flag = FW_NORMAL;
3854                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3855                                 rtn = SUCCESS;
3856                         }
3857                         break;
3858                 }
3859                 case ACB_ADAPTER_TYPE_D: {
3860                         if (acb->acb_flags & ACB_F_BUS_RESET) {
3861                                 long timeout;
3862                                 pr_notice("arcmsr: there is an bus reset"
3863                                         " eh proceeding.......\n");
3864                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags
3865                                         & ACB_F_BUS_RESET) == 0, 220 * HZ);
3866                                 if (timeout)
3867                                         return SUCCESS;
3868                         }
3869                         acb->acb_flags |= ACB_F_BUS_RESET;
3870                         if (!arcmsr_iop_reset(acb)) {
3871                                 struct MessageUnit_D *reg;
3872                                 reg = acb->pmuD;
3873                                 arcmsr_hardware_reset(acb);
3874                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3875                         nap:
3876                                 ssleep(ARCMSR_SLEEPTIME);
3877                                 if ((readl(reg->sample_at_reset) & 0x80) != 0) {
3878                                         pr_err("arcmsr%d: waiting for "
3879                                                 "hw bus reset return, retry=%d\n",
3880                                                 acb->host->host_no, retry_count);
3881                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3882                                                 acb->fw_flag = FW_DEADLOCK;
3883                                                 pr_err("arcmsr%d: waiting for hw bus"
3884                                                         " reset return, "
3885                                                         "RETRY TERMINATED!!\n",
3886                                                         acb->host->host_no);
3887                                                 return FAILED;
3888                                         }
3889                                         retry_count++;
3890                                         goto nap;
3891                                 }
3892                                 acb->acb_flags |= ACB_F_IOP_INITED;
3893                                 /* disable all outbound interrupt */
3894                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3895                                 arcmsr_get_firmware_spec(acb);
3896                                 arcmsr_start_adapter_bgrb(acb);
3897                                 arcmsr_clear_doorbell_queue_buffer(acb);
3898                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3899                                 atomic_set(&acb->rq_map_token, 16);
3900                                 atomic_set(&acb->ante_token_value, 16);
3901                                 acb->fw_flag = FW_NORMAL;
3902                                 mod_timer(&acb->eternal_timer,
3903                                         jiffies + msecs_to_jiffies(6 * HZ));
3904                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3905                                 rtn = SUCCESS;
3906                                 pr_err("arcmsr: scsi bus reset "
3907                                         "eh returns with success\n");
3908                         } else {
3909                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3910                                 atomic_set(&acb->rq_map_token, 16);
3911                                 atomic_set(&acb->ante_token_value, 16);
3912                                 acb->fw_flag = FW_NORMAL;
3913                                 mod_timer(&acb->eternal_timer,
3914                                         jiffies + msecs_to_jiffies(6 * HZ));
3915                                 rtn = SUCCESS;
3916                         }
3917                         break;
3918                 }
3919         }
3920         return rtn;
3921 }
3922
3923 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3924                 struct CommandControlBlock *ccb)
3925 {
3926         int rtn;
3927         rtn = arcmsr_polling_ccbdone(acb, ccb);
3928         return rtn;
3929 }
3930
3931 static int arcmsr_abort(struct scsi_cmnd *cmd)
3932 {
3933         struct AdapterControlBlock *acb =
3934                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3935         int i = 0;
3936         int rtn = FAILED;
3937         uint32_t intmask_org;
3938
3939         printk(KERN_NOTICE
3940                 "arcmsr%d: abort device command of scsi id = %d lun = %d\n",
3941                 acb->host->host_no, cmd->device->id, (u32)cmd->device->lun);
3942         acb->acb_flags |= ACB_F_ABORT;
3943         acb->num_aborts++;
3944         /*
3945         ************************************************
3946         ** the all interrupt service routine is locked
3947         ** we need to handle it as soon as possible and exit
3948         ************************************************
3949         */
3950         if (!atomic_read(&acb->ccboutstandingcount)) {
3951                 acb->acb_flags &= ~ACB_F_ABORT;
3952                 return rtn;
3953         }
3954
3955         intmask_org = arcmsr_disable_outbound_ints(acb);
3956         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3957                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3958                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3959                         ccb->startdone = ARCMSR_CCB_ABORTED;
3960                         rtn = arcmsr_abort_one_cmd(acb, ccb);
3961                         break;
3962                 }
3963         }
3964         acb->acb_flags &= ~ACB_F_ABORT;
3965         arcmsr_enable_outbound_ints(acb, intmask_org);
3966         return rtn;
3967 }
3968
3969 static const char *arcmsr_info(struct Scsi_Host *host)
3970 {
3971         struct AdapterControlBlock *acb =
3972                 (struct AdapterControlBlock *) host->hostdata;
3973         static char buf[256];
3974         char *type;
3975         int raid6 = 1;
3976         switch (acb->pdev->device) {
3977         case PCI_DEVICE_ID_ARECA_1110:
3978         case PCI_DEVICE_ID_ARECA_1200:
3979         case PCI_DEVICE_ID_ARECA_1202:
3980         case PCI_DEVICE_ID_ARECA_1210:
3981                 raid6 = 0;
3982                 /*FALLTHRU*/
3983         case PCI_DEVICE_ID_ARECA_1120:
3984         case PCI_DEVICE_ID_ARECA_1130:
3985         case PCI_DEVICE_ID_ARECA_1160:
3986         case PCI_DEVICE_ID_ARECA_1170:
3987         case PCI_DEVICE_ID_ARECA_1201:
3988         case PCI_DEVICE_ID_ARECA_1203:
3989         case PCI_DEVICE_ID_ARECA_1220:
3990         case PCI_DEVICE_ID_ARECA_1230:
3991         case PCI_DEVICE_ID_ARECA_1260:
3992         case PCI_DEVICE_ID_ARECA_1270:
3993         case PCI_DEVICE_ID_ARECA_1280:
3994                 type = "SATA";
3995                 break;
3996         case PCI_DEVICE_ID_ARECA_1214:
3997         case PCI_DEVICE_ID_ARECA_1380:
3998         case PCI_DEVICE_ID_ARECA_1381:
3999         case PCI_DEVICE_ID_ARECA_1680:
4000         case PCI_DEVICE_ID_ARECA_1681:
4001         case PCI_DEVICE_ID_ARECA_1880:
4002                 type = "SAS/SATA";
4003                 break;
4004         default:
4005                 type = "unknown";
4006                 raid6 = 0;
4007                 break;
4008         }
4009         sprintf(buf, "Areca %s RAID Controller %s\narcmsr version %s\n",
4010                 type, raid6 ? "(RAID6 capable)" : "", ARCMSR_DRIVER_VERSION);
4011         return buf;
4012 }