kernel/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 <asm/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(unsigned long pacb);
 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 int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
 118 {
 119         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 120                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 121         return scsi_change_queue_depth(sdev, queue_depth);
 122 }
 123
 124 static struct scsi_host_template arcmsr_scsi_host_template = {
 125         .module                 = THIS_MODULE,
 126         .name                   = "Areca SAS/SATA RAID driver",
 127         .info                   = arcmsr_info,
 128         .queuecommand           = arcmsr_queue_command,
 129         .eh_abort_handler               = arcmsr_abort,
 130         .eh_bus_reset_handler   = arcmsr_bus_reset,
 131         .bios_param             = arcmsr_bios_param,
 132         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 133         .can_queue              = ARCMSR_MAX_OUTSTANDING_CMD,
 134         .this_id                        = ARCMSR_SCSI_INITIATOR_ID,
 135         .sg_tablesize                   = ARCMSR_DEFAULT_SG_ENTRIES,
 136         .max_sectors                    = ARCMSR_MAX_XFER_SECTORS_C,
 137         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 138         .use_clustering         = ENABLE_CLUSTERING,
 139         .shost_attrs            = arcmsr_host_attrs,
 140         .no_write_same          = 1,
 141 };
 142
 143 static struct pci_device_id arcmsr_device_id_table[] = {
 144         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110),
 145                 .driver_data = ACB_ADAPTER_TYPE_A},
 146         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120),
 147                 .driver_data = ACB_ADAPTER_TYPE_A},
 148         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130),
 149                 .driver_data = ACB_ADAPTER_TYPE_A},
 150         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160),
 151                 .driver_data = ACB_ADAPTER_TYPE_A},
 152         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170),
 153                 .driver_data = ACB_ADAPTER_TYPE_A},
 154         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200),
 155                 .driver_data = ACB_ADAPTER_TYPE_B},
 156         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201),
 157                 .driver_data = ACB_ADAPTER_TYPE_B},
 158         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202),
 159                 .driver_data = ACB_ADAPTER_TYPE_B},
 160         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210),
 161                 .driver_data = ACB_ADAPTER_TYPE_A},
 162         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1214),
 163                 .driver_data = ACB_ADAPTER_TYPE_D},
 164         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220),
 165                 .driver_data = ACB_ADAPTER_TYPE_A},
 166         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230),
 167                 .driver_data = ACB_ADAPTER_TYPE_A},
 168         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260),
 169                 .driver_data = ACB_ADAPTER_TYPE_A},
 170         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270),
 171                 .driver_data = ACB_ADAPTER_TYPE_A},
 172         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280),
 173                 .driver_data = ACB_ADAPTER_TYPE_A},
 174         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380),
 175                 .driver_data = ACB_ADAPTER_TYPE_A},
 176         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381),
 177                 .driver_data = ACB_ADAPTER_TYPE_A},
 178         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680),
 179                 .driver_data = ACB_ADAPTER_TYPE_A},
 180         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681),
 181                 .driver_data = ACB_ADAPTER_TYPE_A},
 182         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880),
 183                 .driver_data = ACB_ADAPTER_TYPE_C},
 184         {0, 0}, /* Terminating entry */
 185 };
 186 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 187
 188 static struct pci_driver arcmsr_pci_driver = {
 189         .name                   = "arcmsr",
 190         .id_table                       = arcmsr_device_id_table,
 191         .probe                  = arcmsr_probe,
 192         .remove                 = arcmsr_remove,
 193         .suspend                = arcmsr_suspend,
 194         .resume                 = arcmsr_resume,
 195         .shutdown               = arcmsr_shutdown,
 196 };
 197 /*
 198 ****************************************************************************
 199 ****************************************************************************
 200 */
 201
 202 static void arcmsr_free_mu(struct AdapterControlBlock *acb)
 203 {
 204         switch (acb->adapter_type) {
 205         case ACB_ADAPTER_TYPE_B:
 206         case ACB_ADAPTER_TYPE_D: {
 207                 dma_free_coherent(&acb->pdev->dev, acb->roundup_ccbsize,
 208                         acb->dma_coherent2, acb->dma_coherent_handle2);
 209                 break;
 210         }
 211         }
 212 }
 213
 214 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 215 {
 216         struct pci_dev *pdev = acb->pdev;
 217         switch (acb->adapter_type){
 218         case ACB_ADAPTER_TYPE_A:{
 219                 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 220                 if (!acb->pmuA) {
 221                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 222                         return false;
 223                 }
 224                 break;
 225         }
 226         case ACB_ADAPTER_TYPE_B:{
 227                 void __iomem *mem_base0, *mem_base1;
 228                 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 229                 if (!mem_base0) {
 230                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 231                         return false;
 232                 }
 233                 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 234                 if (!mem_base1) {
 235                         iounmap(mem_base0);
 236                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 237                         return false;
 238                 }
 239                 acb->mem_base0 = mem_base0;
 240                 acb->mem_base1 = mem_base1;
 241                 break;
 242         }
 243         case ACB_ADAPTER_TYPE_C:{
 244                 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 245                 if (!acb->pmuC) {
 246                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 247                         return false;
 248                 }
 249                 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 250                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
 251                         return true;
 252                 }
 253                 break;
 254         }
 255         case ACB_ADAPTER_TYPE_D: {
 256                 void __iomem *mem_base0;
 257                 unsigned long addr, range, flags;
 258
 259                 addr = (unsigned long)pci_resource_start(pdev, 0);
 260                 range = pci_resource_len(pdev, 0);
 261                 flags = pci_resource_flags(pdev, 0);
 262                 mem_base0 = ioremap(addr, range);
 263                 if (!mem_base0) {
 264                         pr_notice("arcmsr%d: memory mapping region fail\n",
 265                                 acb->host->host_no);
 266                         return false;
 267                 }
 268                 acb->mem_base0 = mem_base0;
 269                 break;
 270                 }
 271         }
 272         return true;
 273 }
 274
 275 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 276 {
 277         switch (acb->adapter_type) {
 278         case ACB_ADAPTER_TYPE_A:{
 279                 iounmap(acb->pmuA);
 280         }
 281         break;
 282         case ACB_ADAPTER_TYPE_B:{
 283                 iounmap(acb->mem_base0);
 284                 iounmap(acb->mem_base1);
 285         }
 286
 287         break;
 288         case ACB_ADAPTER_TYPE_C:{
 289                 iounmap(acb->pmuC);
 290         }
 291         break;
 292         case ACB_ADAPTER_TYPE_D:
 293                 iounmap(acb->mem_base0);
 294                 break;
 295         }
 296 }
 297
 298 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 299 {
 300         irqreturn_t handle_state;
 301         struct AdapterControlBlock *acb = dev_id;
 302
 303         handle_state = arcmsr_interrupt(acb);
 304         return handle_state;
 305 }
 306
 307 static int arcmsr_bios_param(struct scsi_device *sdev,
 308                 struct block_device *bdev, sector_t capacity, int *geom)
 309 {
 310         int ret, heads, sectors, cylinders, total_capacity;
 311         unsigned char *buffer;/* return copy of block device's partition table */
 312
 313         buffer = scsi_bios_ptable(bdev);
 314         if (buffer) {
 315                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 316                 kfree(buffer);
 317                 if (ret != -1)
 318                         return ret;
 319         }
 320         total_capacity = capacity;
 321         heads = 64;
 322         sectors = 32;
 323         cylinders = total_capacity / (heads * sectors);
 324         if (cylinders > 1024) {
 325                 heads = 255;
 326                 sectors = 63;
 327                 cylinders = total_capacity / (heads * sectors);
 328         }
 329         geom[0] = heads;
 330         geom[1] = sectors;
 331         geom[2] = cylinders;
 332         return 0;
 333 }
 334
 335 static uint8_t arcmsr_hbaA_wait_msgint_ready(struct AdapterControlBlock *acb)
 336 {
 337         struct MessageUnit_A __iomem *reg = acb->pmuA;
 338         int i;
 339
 340         for (i = 0; i < 2000; i++) {
 341                 if (readl(&reg->outbound_intstatus) &
 342                                 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 343                         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 344                                 &reg->outbound_intstatus);
 345                         return true;
 346                 }
 347                 msleep(10);
 348         } /* max 20 seconds */
 349
 350         return false;
 351 }
 352
 353 static uint8_t arcmsr_hbaB_wait_msgint_ready(struct AdapterControlBlock *acb)
 354 {
 355         struct MessageUnit_B *reg = acb->pmuB;
 356         int i;
 357
 358         for (i = 0; i < 2000; i++) {
 359                 if (readl(reg->iop2drv_doorbell)
 360                         & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 361                         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN,
 362                                         reg->iop2drv_doorbell);
 363                         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT,
 364                                         reg->drv2iop_doorbell);
 365                         return true;
 366                 }
 367                 msleep(10);
 368         } /* max 20 seconds */
 369
 370         return false;
 371 }
 372
 373 static uint8_t arcmsr_hbaC_wait_msgint_ready(struct AdapterControlBlock *pACB)
 374 {
 375         struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
 376         int i;
 377
 378         for (i = 0; i < 2000; i++) {
 379                 if (readl(&phbcmu->outbound_doorbell)
 380                                 & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
 381                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR,
 382                                 &phbcmu->outbound_doorbell_clear); /*clear interrupt*/
 383                         return true;
 384                 }
 385                 msleep(10);
 386         } /* max 20 seconds */
 387
 388         return false;
 389 }
 390
 391 static bool arcmsr_hbaD_wait_msgint_ready(struct AdapterControlBlock *pACB)
 392 {
 393         struct MessageUnit_D *reg = pACB->pmuD;
 394         int i;
 395
 396         for (i = 0; i < 2000; i++) {
 397                 if (readl(reg->outbound_doorbell)
 398                         & ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE) {
 399                         writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE,
 400                                 reg->outbound_doorbell);
 401                         return true;
 402                 }
 403                 msleep(10);
 404         } /* max 20 seconds */
 405         return false;
 406 }
 407
 408 static void arcmsr_hbaA_flush_cache(struct AdapterControlBlock *acb)
 409 {
 410         struct MessageUnit_A __iomem *reg = acb->pmuA;
 411         int retry_count = 30;
 412         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 413         do {
 414                 if (arcmsr_hbaA_wait_msgint_ready(acb))
 415                         break;
 416                 else {
 417                         retry_count--;
 418                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 419                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 420                 }
 421         } while (retry_count != 0);
 422 }
 423
 424 static void arcmsr_hbaB_flush_cache(struct AdapterControlBlock *acb)
 425 {
 426         struct MessageUnit_B *reg = acb->pmuB;
 427         int retry_count = 30;
 428         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 429         do {
 430                 if (arcmsr_hbaB_wait_msgint_ready(acb))
 431                         break;
 432                 else {
 433                         retry_count--;
 434                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 435                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 436                 }
 437         } while (retry_count != 0);
 438 }
 439
 440 static void arcmsr_hbaC_flush_cache(struct AdapterControlBlock *pACB)
 441 {
 442         struct MessageUnit_C __iomem *reg = pACB->pmuC;
 443         int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
 444         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 445         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 446         do {
 447                 if (arcmsr_hbaC_wait_msgint_ready(pACB)) {
 448                         break;
 449                 } else {
 450                         retry_count--;
 451                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 452                         timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
 453                 }
 454         } while (retry_count != 0);
 455         return;
 456 }
 457
 458 static void arcmsr_hbaD_flush_cache(struct AdapterControlBlock *pACB)
 459 {
 460         int retry_count = 15;
 461         struct MessageUnit_D *reg = pACB->pmuD;
 462
 463         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, reg->inbound_msgaddr0);
 464         do {
 465                 if (arcmsr_hbaD_wait_msgint_ready(pACB))
 466                         break;
 467
 468                 retry_count--;
 469                 pr_notice("arcmsr%d: wait 'flush adapter "
 470                         "cache' timeout, retry count down = %d\n",
 471                         pACB->host->host_no, retry_count);
 472         } while (retry_count != 0);
 473 }
 474
 475 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 476 {
 477         switch (acb->adapter_type) {
 478
 479         case ACB_ADAPTER_TYPE_A: {
 480                 arcmsr_hbaA_flush_cache(acb);
 481                 }
 482                 break;
 483
 484         case ACB_ADAPTER_TYPE_B: {
 485                 arcmsr_hbaB_flush_cache(acb);
 486                 }
 487                 break;
 488         case ACB_ADAPTER_TYPE_C: {
 489                 arcmsr_hbaC_flush_cache(acb);
 490                 }
 491                 break;
 492         case ACB_ADAPTER_TYPE_D:
 493                 arcmsr_hbaD_flush_cache(acb);
 494                 break;
 495         }
 496 }
 497
 498 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 499 {
 500         struct pci_dev *pdev = acb->pdev;
 501         void *dma_coherent;
 502         dma_addr_t dma_coherent_handle;
 503         struct CommandControlBlock *ccb_tmp;
 504         int i = 0, j = 0;
 505         dma_addr_t cdb_phyaddr;
 506         unsigned long roundup_ccbsize;
 507         unsigned long max_xfer_len;
 508         unsigned long max_sg_entrys;
 509         uint32_t  firm_config_version;
 510
 511         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 512                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 513                         acb->devstate[i][j] = ARECA_RAID_GONE;
 514
 515         max_xfer_len = ARCMSR_MAX_XFER_LEN;
 516         max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
 517         firm_config_version = acb->firm_cfg_version;
 518         if((firm_config_version & 0xFF) >= 3){
 519                 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
 520                 max_sg_entrys = (max_xfer_len/4096);
 521         }
 522         acb->host->max_sectors = max_xfer_len/512;
 523         acb->host->sg_tablesize = max_sg_entrys;
 524         roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
 525         acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM;
 526         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
 527         if(!dma_coherent){
 528                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error\n", acb->host->host_no);
 529                 return -ENOMEM;
 530         }
 531         acb->dma_coherent = dma_coherent;
 532         acb->dma_coherent_handle = dma_coherent_handle;
 533         memset(dma_coherent, 0, acb->uncache_size);
 534         ccb_tmp = dma_coherent;
 535         acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
 536         for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
 537                 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
 538                 switch (acb->adapter_type) {
 539                 case ACB_ADAPTER_TYPE_A:
 540                 case ACB_ADAPTER_TYPE_B:
 541                         ccb_tmp->cdb_phyaddr = cdb_phyaddr >> 5;
 542                         break;
 543                 case ACB_ADAPTER_TYPE_C:
 544                 case ACB_ADAPTER_TYPE_D:
 545                         ccb_tmp->cdb_phyaddr = cdb_phyaddr;
 546                         break;
 547                 }
 548                 acb->pccb_pool[i] = ccb_tmp;
 549                 ccb_tmp->acb = acb;
 550                 INIT_LIST_HEAD(&ccb_tmp->list);
 551                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 552                 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
 553                 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 554         }
 555         return 0;
 556 }
 557
 558 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
 559 {
 560         struct AdapterControlBlock *acb = container_of(work,
 561                 struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 562         char *acb_dev_map = (char *)acb->device_map;
 563         uint32_t __iomem *signature = NULL;
 564         char __iomem *devicemap = NULL;
 565         int target, lun;
 566         struct scsi_device *psdev;
 567         char diff, temp;
 568
 569         switch (acb->adapter_type) {
 570         case ACB_ADAPTER_TYPE_A: {
 571                 struct MessageUnit_A __iomem *reg  = acb->pmuA;
 572
 573                 signature = (uint32_t __iomem *)(&reg->message_rwbuffer[0]);
 574                 devicemap = (char __iomem *)(&reg->message_rwbuffer[21]);
 575                 break;
 576         }
 577         case ACB_ADAPTER_TYPE_B: {
 578                 struct MessageUnit_B *reg  = acb->pmuB;
 579
 580                 signature = (uint32_t __iomem *)(&reg->message_rwbuffer[0]);
 581                 devicemap = (char __iomem *)(&reg->message_rwbuffer[21]);
 582                 break;
 583         }
 584         case ACB_ADAPTER_TYPE_C: {
 585                 struct MessageUnit_C __iomem *reg  = acb->pmuC;
 586
 587                 signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 588                 devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 589                 break;
 590         }
 591         case ACB_ADAPTER_TYPE_D: {
 592                 struct MessageUnit_D *reg  = acb->pmuD;
 593
 594                 signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
 595                 devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 596                 break;
 597         }
 598         }
 599         atomic_inc(&acb->rq_map_token);
 600         if (readl(signature) != ARCMSR_SIGNATURE_GET_CONFIG)
 601                 return;
 602         for (target = 0; target < ARCMSR_MAX_TARGETID - 1;
 603                 target++) {
 604                 temp = readb(devicemap);
 605                 diff = (*acb_dev_map) ^ temp;
 606                 if (diff != 0) {
 607                         *acb_dev_map = temp;
 608                         for (lun = 0; lun < ARCMSR_MAX_TARGETLUN;
 609                                 lun++) {
 610                                 if ((diff & 0x01) == 1 &&
 611                                         (temp & 0x01) == 1) {
 612                                         scsi_add_device(acb->host,
 613                                                 0, target, lun);
 614                                 } else if ((diff & 0x01) == 1
 615                                         && (temp & 0x01) == 0) {
 616                                         psdev = scsi_device_lookup(acb->host,
 617                                                 0, target, lun);
 618                                         if (psdev != NULL) {
 619                                                 scsi_remove_device(psdev);
 620                                                 scsi_device_put(psdev);
 621                                         }
 622                                 }
 623                                 temp >>= 1;
 624                                 diff >>= 1;
 625                         }
 626                 }
 627                 devicemap++;
 628                 acb_dev_map++;
 629         }
 630 }
 631
 632 static int
 633 arcmsr_request_irq(struct pci_dev *pdev, struct AdapterControlBlock *acb)
 634 {
 635         int     i, j, r;
 636         struct msix_entry entries[ARCMST_NUM_MSIX_VECTORS];
 637
 638         for (i = 0; i < ARCMST_NUM_MSIX_VECTORS; i++)
 639                 entries[i].entry = i;
 640         r = pci_enable_msix_range(pdev, entries, 1, ARCMST_NUM_MSIX_VECTORS);
 641         if (r < 0)
 642                 goto msi_int;
 643         acb->msix_vector_count = r;
 644         for (i = 0; i < r; i++) {
 645                 if (request_irq(entries[i].vector,
 646                         arcmsr_do_interrupt, 0, "arcmsr", acb)) {
 647                         pr_warn("arcmsr%d: request_irq =%d failed!\n",
 648                                 acb->host->host_no, entries[i].vector);
 649                         for (j = 0 ; j < i ; j++)
 650                                 free_irq(entries[j].vector, acb);
 651                         pci_disable_msix(pdev);
 652                         goto msi_int;
 653                 }
 654                 acb->entries[i] = entries[i];
 655         }
 656         acb->acb_flags |= ACB_F_MSIX_ENABLED;
 657         pr_info("arcmsr%d: msi-x enabled\n", acb->host->host_no);
 658         return SUCCESS;
 659 msi_int:
 660         if (pci_enable_msi_exact(pdev, 1) < 0)
 661                 goto legacy_int;
 662         if (request_irq(pdev->irq, arcmsr_do_interrupt,
 663                 IRQF_SHARED, "arcmsr", acb)) {
 664                 pr_warn("arcmsr%d: request_irq =%d failed!\n",
 665                         acb->host->host_no, pdev->irq);
 666                 pci_disable_msi(pdev);
 667                 goto legacy_int;
 668         }
 669         acb->acb_flags |= ACB_F_MSI_ENABLED;
 670         pr_info("arcmsr%d: msi enabled\n", acb->host->host_no);
 671         return SUCCESS;
 672 legacy_int:
 673         if (request_irq(pdev->irq, arcmsr_do_interrupt,
 674                 IRQF_SHARED, "arcmsr", acb)) {
 675                 pr_warn("arcmsr%d: request_irq = %d failed!\n",
 676                         acb->host->host_no, pdev->irq);
 677                 return FAILED;
 678         }
 679         return SUCCESS;
 680 }
 681
 682 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 683 {
 684         struct Scsi_Host *host;
 685         struct AdapterControlBlock *acb;
 686         uint8_t bus,dev_fun;
 687         int error;
 688         error = pci_enable_device(pdev);
 689         if(error){
 690                 return -ENODEV;
 691         }
 692         host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
 693         if(!host){
 694                 goto pci_disable_dev;
 695         }
 696         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 697         if(error){
 698                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 699                 if(error){
 700                         printk(KERN_WARNING
 701                                "scsi%d: No suitable DMA mask available\n",
 702                                host->host_no);
 703                         goto scsi_host_release;
 704                 }
 705         }
 706         init_waitqueue_head(&wait_q);
 707         bus = pdev->bus->number;
 708         dev_fun = pdev->devfn;
 709         acb = (struct AdapterControlBlock *) host->hostdata;
 710         memset(acb,0,sizeof(struct AdapterControlBlock));
 711         acb->pdev = pdev;
 712         acb->host = host;
 713         host->max_lun = ARCMSR_MAX_TARGETLUN;
 714         host->max_id = ARCMSR_MAX_TARGETID;             /*16:8*/
 715         host->max_cmd_len = 16;                         /*this is issue of 64bit LBA ,over 2T byte*/
 716         host->can_queue = ARCMSR_MAX_OUTSTANDING_CMD;
 717         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 718         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 719         host->unique_id = (bus << 8) | dev_fun;
 720         pci_set_drvdata(pdev, host);
 721         pci_set_master(pdev);
 722         error = pci_request_regions(pdev, "arcmsr");
 723         if(error){
 724                 goto scsi_host_release;
 725         }
 726         spin_lock_init(&acb->eh_lock);
 727         spin_lock_init(&acb->ccblist_lock);
 728         spin_lock_init(&acb->postq_lock);
 729         spin_lock_init(&acb->doneq_lock);
 730         spin_lock_init(&acb->rqbuffer_lock);
 731         spin_lock_init(&acb->wqbuffer_lock);
 732         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 733                         ACB_F_MESSAGE_RQBUFFER_CLEARED |
 734                         ACB_F_MESSAGE_WQBUFFER_READED);
 735         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 736         INIT_LIST_HEAD(&acb->ccb_free_list);
 737         acb->adapter_type = id->driver_data;
 738         error = arcmsr_remap_pciregion(acb);
 739         if(!error){
 740                 goto pci_release_regs;
 741         }
 742         error = arcmsr_get_firmware_spec(acb);
 743         if(!error){
 744                 goto unmap_pci_region;
 745         }
 746         error = arcmsr_alloc_ccb_pool(acb);
 747         if(error){
 748                 goto free_hbb_mu;
 749         }
 750         error = scsi_add_host(host, &pdev->dev);
 751         if(error){
 752                 goto free_ccb_pool;
 753         }
 754         if (arcmsr_request_irq(pdev, acb) == FAILED)
 755                 goto scsi_host_remove;
 756         arcmsr_iop_init(acb);
 757         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 758         atomic_set(&acb->rq_map_token, 16);
 759         atomic_set(&acb->ante_token_value, 16);
 760         acb->fw_flag = FW_NORMAL;
 761         init_timer(&acb->eternal_timer);
 762         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 763         acb->eternal_timer.data = (unsigned long) acb;
 764         acb->eternal_timer.function = &arcmsr_request_device_map;
 765         add_timer(&acb->eternal_timer);
 766         if(arcmsr_alloc_sysfs_attr(acb))
 767                 goto out_free_sysfs;
 768         scsi_scan_host(host);
 769         return 0;
 770 out_free_sysfs:
 771         del_timer_sync(&acb->eternal_timer);
 772         flush_work(&acb->arcmsr_do_message_isr_bh);
 773         arcmsr_stop_adapter_bgrb(acb);
 774         arcmsr_flush_adapter_cache(acb);
 775         arcmsr_free_irq(pdev, acb);
 776 scsi_host_remove:
 777         scsi_remove_host(host);
 778 free_ccb_pool:
 779         arcmsr_free_ccb_pool(acb);
 780 free_hbb_mu:
 781         arcmsr_free_mu(acb);
 782 unmap_pci_region:
 783         arcmsr_unmap_pciregion(acb);
 784 pci_release_regs:
 785         pci_release_regions(pdev);
 786 scsi_host_release:
 787         scsi_host_put(host);
 788 pci_disable_dev:
 789         pci_disable_device(pdev);
 790         return -ENODEV;
 791 }
 792
 793 static void arcmsr_free_irq(struct pci_dev *pdev,
 794                 struct AdapterControlBlock *acb)
 795 {
 796         int i;
 797
 798         if (acb->acb_flags & ACB_F_MSI_ENABLED) {
 799                 free_irq(pdev->irq, acb);
 800                 pci_disable_msi(pdev);
 801         } else if (acb->acb_flags & ACB_F_MSIX_ENABLED) {
 802                 for (i = 0; i < acb->msix_vector_count; i++)
 803                         free_irq(acb->entries[i].vector, acb);
 804                 pci_disable_msix(pdev);
 805         } else
 806                 free_irq(pdev->irq, acb);
 807 }
 808
 809 static int arcmsr_suspend(struct pci_dev *pdev, pm_message_t state)
 810 {
 811         uint32_t intmask_org;
 812         struct Scsi_Host *host = pci_get_drvdata(pdev);
 813         struct AdapterControlBlock *acb =
 814                 (struct AdapterControlBlock *)host->hostdata;
 815
 816         intmask_org = arcmsr_disable_outbound_ints(acb);
 817         arcmsr_free_irq(pdev, acb);
 818         del_timer_sync(&acb->eternal_timer);
 819         flush_work(&acb->arcmsr_do_message_isr_bh);
 820         arcmsr_stop_adapter_bgrb(acb);
 821         arcmsr_flush_adapter_cache(acb);
 822         pci_set_drvdata(pdev, host);
 823         pci_save_state(pdev);
 824         pci_disable_device(pdev);
 825         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 826         return 0;
 827 }
 828
 829 static int arcmsr_resume(struct pci_dev *pdev)
 830 {
 831         int error;
 832         struct Scsi_Host *host = pci_get_drvdata(pdev);
 833         struct AdapterControlBlock *acb =
 834                 (struct AdapterControlBlock *)host->hostdata;
 835
 836         pci_set_power_state(pdev, PCI_D0);
 837         pci_enable_wake(pdev, PCI_D0, 0);
 838         pci_restore_state(pdev);
 839         if (pci_enable_device(pdev)) {
 840                 pr_warn("%s: pci_enable_device error\n", __func__);
 841                 return -ENODEV;
 842         }
 843         error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
 844         if (error) {
 845                 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 846                 if (error) {
 847                         pr_warn("scsi%d: No suitable DMA mask available\n",
 848                                host->host_no);
 849                         goto controller_unregister;
 850                 }
 851         }
 852         pci_set_master(pdev);
 853         if (arcmsr_request_irq(pdev, acb) == FAILED)
 854                 goto controller_stop;
 855         arcmsr_iop_init(acb);
 856         INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 857         atomic_set(&acb->rq_map_token, 16);
 858         atomic_set(&acb->ante_token_value, 16);
 859         acb->fw_flag = FW_NORMAL;
 860         init_timer(&acb->eternal_timer);
 861         acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
 862         acb->eternal_timer.data = (unsigned long) acb;
 863         acb->eternal_timer.function = &arcmsr_request_device_map;
 864         add_timer(&acb->eternal_timer);
 865         return 0;
 866 controller_stop:
 867         arcmsr_stop_adapter_bgrb(acb);
 868         arcmsr_flush_adapter_cache(acb);
 869 controller_unregister:
 870         scsi_remove_host(host);
 871         arcmsr_free_ccb_pool(acb);
 872         arcmsr_unmap_pciregion(acb);
 873         pci_release_regions(pdev);
 874         scsi_host_put(host);
 875         pci_disable_device(pdev);
 876         return -ENODEV;
 877 }
 878
 879 static uint8_t arcmsr_hbaA_abort_allcmd(struct AdapterControlBlock *acb)
 880 {
 881         struct MessageUnit_A __iomem *reg = acb->pmuA;
 882         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 883         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
 884                 printk(KERN_NOTICE
 885                         "arcmsr%d: wait 'abort all outstanding command' timeout\n"
 886                         , acb->host->host_no);
 887                 return false;
 888         }
 889         return true;
 890 }
 891
 892 static uint8_t arcmsr_hbaB_abort_allcmd(struct AdapterControlBlock *acb)
 893 {
 894         struct MessageUnit_B *reg = acb->pmuB;
 895
 896         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
 897         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
 898                 printk(KERN_NOTICE
 899                         "arcmsr%d: wait 'abort all outstanding command' timeout\n"
 900                         , acb->host->host_no);
 901                 return false;
 902         }
 903         return true;
 904 }
 905 static uint8_t arcmsr_hbaC_abort_allcmd(struct AdapterControlBlock *pACB)
 906 {
 907         struct MessageUnit_C __iomem *reg = pACB->pmuC;
 908         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 909         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
 910         if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
 911                 printk(KERN_NOTICE
 912                         "arcmsr%d: wait 'abort all outstanding command' timeout\n"
 913                         , pACB->host->host_no);
 914                 return false;
 915         }
 916         return true;
 917 }
 918
 919 static uint8_t arcmsr_hbaD_abort_allcmd(struct AdapterControlBlock *pACB)
 920 {
 921         struct MessageUnit_D *reg = pACB->pmuD;
 922
 923         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, reg->inbound_msgaddr0);
 924         if (!arcmsr_hbaD_wait_msgint_ready(pACB)) {
 925                 pr_notice("arcmsr%d: wait 'abort all outstanding "
 926                         "command' timeout\n", pACB->host->host_no);
 927                 return false;
 928         }
 929         return true;
 930 }
 931
 932 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 933 {
 934         uint8_t rtnval = 0;
 935         switch (acb->adapter_type) {
 936         case ACB_ADAPTER_TYPE_A: {
 937                 rtnval = arcmsr_hbaA_abort_allcmd(acb);
 938                 }
 939                 break;
 940
 941         case ACB_ADAPTER_TYPE_B: {
 942                 rtnval = arcmsr_hbaB_abort_allcmd(acb);
 943                 }
 944                 break;
 945
 946         case ACB_ADAPTER_TYPE_C: {
 947                 rtnval = arcmsr_hbaC_abort_allcmd(acb);
 948                 }
 949                 break;
 950
 951         case ACB_ADAPTER_TYPE_D:
 952                 rtnval = arcmsr_hbaD_abort_allcmd(acb);
 953                 break;
 954         }
 955         return rtnval;
 956 }
 957
 958 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 959 {
 960         struct scsi_cmnd *pcmd = ccb->pcmd;
 961
 962         scsi_dma_unmap(pcmd);
 963 }
 964
 965 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 966 {
 967         struct AdapterControlBlock *acb = ccb->acb;
 968         struct scsi_cmnd *pcmd = ccb->pcmd;
 969         unsigned long flags;
 970         atomic_dec(&acb->ccboutstandingcount);
 971         arcmsr_pci_unmap_dma(ccb);
 972         ccb->startdone = ARCMSR_CCB_DONE;
 973         spin_lock_irqsave(&acb->ccblist_lock, flags);
 974         list_add_tail(&ccb->list, &acb->ccb_free_list);
 975         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 976         pcmd->scsi_done(pcmd);
 977 }
 978
 979 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 980 {
 981
 982         struct scsi_cmnd *pcmd = ccb->pcmd;
 983         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 984         pcmd->result = DID_OK << 16;
 985         if (sensebuffer) {
 986                 int sense_data_length =
 987                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 988                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 989                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 990                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 991                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 992                 sensebuffer->Valid = 1;
 993         }
 994 }
 995
 996 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 997 {
 998         u32 orig_mask = 0;
 999         switch (acb->adapter_type) {
1000         case ACB_ADAPTER_TYPE_A : {
1001                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1002                 orig_mask = readl(&reg->outbound_intmask);
1003                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
1004                                                 &reg->outbound_intmask);
1005                 }
1006                 break;
1007         case ACB_ADAPTER_TYPE_B : {
1008                 struct MessageUnit_B *reg = acb->pmuB;
1009                 orig_mask = readl(reg->iop2drv_doorbell_mask);
1010                 writel(0, reg->iop2drv_doorbell_mask);
1011                 }
1012                 break;
1013         case ACB_ADAPTER_TYPE_C:{
1014                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1015                 /* disable all outbound interrupt */
1016                 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
1017                 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
1018                 }
1019                 break;
1020         case ACB_ADAPTER_TYPE_D: {
1021                 struct MessageUnit_D *reg = acb->pmuD;
1022                 /* disable all outbound interrupt */
1023                 writel(ARCMSR_ARC1214_ALL_INT_DISABLE, reg->pcief0_int_enable);
1024                 }
1025                 break;
1026         }
1027         return orig_mask;
1028 }
1029
1030 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
1031                         struct CommandControlBlock *ccb, bool error)
1032 {
1033         uint8_t id, lun;
1034         id = ccb->pcmd->device->id;
1035         lun = ccb->pcmd->device->lun;
1036         if (!error) {
1037                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
1038                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
1039                 ccb->pcmd->result = DID_OK << 16;
1040                 arcmsr_ccb_complete(ccb);
1041         }else{
1042                 switch (ccb->arcmsr_cdb.DeviceStatus) {
1043                 case ARCMSR_DEV_SELECT_TIMEOUT: {
1044                         acb->devstate[id][lun] = ARECA_RAID_GONE;
1045                         ccb->pcmd->result = DID_NO_CONNECT << 16;
1046                         arcmsr_ccb_complete(ccb);
1047                         }
1048                         break;
1049
1050                 case ARCMSR_DEV_ABORTED:
1051
1052                 case ARCMSR_DEV_INIT_FAIL: {
1053                         acb->devstate[id][lun] = ARECA_RAID_GONE;
1054                         ccb->pcmd->result = DID_BAD_TARGET << 16;
1055                         arcmsr_ccb_complete(ccb);
1056                         }
1057                         break;
1058
1059                 case ARCMSR_DEV_CHECK_CONDITION: {
1060                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
1061                         arcmsr_report_sense_info(ccb);
1062                         arcmsr_ccb_complete(ccb);
1063                         }
1064                         break;
1065
1066                 default:
1067                         printk(KERN_NOTICE
1068                                 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
1069                                 but got unknown DeviceStatus = 0x%x \n"
1070                                 , acb->host->host_no
1071                                 , id
1072                                 , lun
1073                                 , ccb->arcmsr_cdb.DeviceStatus);
1074                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
1075                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
1076                                 arcmsr_ccb_complete(ccb);
1077                         break;
1078                 }
1079         }
1080 }
1081
1082 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
1083 {
1084         int id, lun;
1085         if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
1086                 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
1087                         struct scsi_cmnd *abortcmd = pCCB->pcmd;
1088                         if (abortcmd) {
1089                                 id = abortcmd->device->id;
1090                                 lun = abortcmd->device->lun;
1091                                 abortcmd->result |= DID_ABORT << 16;
1092                                 arcmsr_ccb_complete(pCCB);
1093                                 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
1094                                 acb->host->host_no, pCCB);
1095                         }
1096                         return;
1097                 }
1098                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
1099                                 done acb = '0x%p'"
1100                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
1101                                 " ccboutstandingcount = %d \n"
1102                                 , acb->host->host_no
1103                                 , acb
1104                                 , pCCB
1105                                 , pCCB->acb
1106                                 , pCCB->startdone
1107                                 , atomic_read(&acb->ccboutstandingcount));
1108                   return;
1109         }
1110         arcmsr_report_ccb_state(acb, pCCB, error);
1111 }
1112
1113 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
1114 {
1115         int i = 0;
1116         uint32_t flag_ccb, ccb_cdb_phy;
1117         struct ARCMSR_CDB *pARCMSR_CDB;
1118         bool error;
1119         struct CommandControlBlock *pCCB;
1120         switch (acb->adapter_type) {
1121
1122         case ACB_ADAPTER_TYPE_A: {
1123                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1124                 uint32_t outbound_intstatus;
1125                 outbound_intstatus = readl(&reg->outbound_intstatus) &
1126                                         acb->outbound_int_enable;
1127                 /*clear and abort all outbound posted Q*/
1128                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
1129                 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
1130                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1131                         pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1132                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1133                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1134                         arcmsr_drain_donequeue(acb, pCCB, error);
1135                 }
1136                 }
1137                 break;
1138
1139         case ACB_ADAPTER_TYPE_B: {
1140                 struct MessageUnit_B *reg = acb->pmuB;
1141                 /*clear all outbound posted Q*/
1142                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
1143                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
1144                         flag_ccb = reg->done_qbuffer[i];
1145                         if (flag_ccb != 0) {
1146                                 reg->done_qbuffer[i] = 0;
1147                                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1148                                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1149                                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1150                                 arcmsr_drain_donequeue(acb, pCCB, error);
1151                         }
1152                         reg->post_qbuffer[i] = 0;
1153                 }
1154                 reg->doneq_index = 0;
1155                 reg->postq_index = 0;
1156                 }
1157                 break;
1158         case ACB_ADAPTER_TYPE_C: {
1159                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1160                 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1161                         /*need to do*/
1162                         flag_ccb = readl(&reg->outbound_queueport_low);
1163                         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1164                         pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
1165                         pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1166                         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1167                         arcmsr_drain_donequeue(acb, pCCB, error);
1168                 }
1169                 }
1170                 break;
1171         case ACB_ADAPTER_TYPE_D: {
1172                 struct MessageUnit_D  *pmu = acb->pmuD;
1173                 uint32_t outbound_write_pointer;
1174                 uint32_t doneq_index, index_stripped, addressLow, residual, toggle;
1175                 unsigned long flags;
1176
1177                 residual = atomic_read(&acb->ccboutstandingcount);
1178                 for (i = 0; i < residual; i++) {
1179                         spin_lock_irqsave(&acb->doneq_lock, flags);
1180                         outbound_write_pointer =
1181                                 pmu->done_qbuffer[0].addressLow + 1;
1182                         doneq_index = pmu->doneq_index;
1183                         if ((doneq_index & 0xFFF) !=
1184                                 (outbound_write_pointer & 0xFFF)) {
1185                                 toggle = doneq_index & 0x4000;
1186                                 index_stripped = (doneq_index & 0xFFF) + 1;
1187                                 index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
1188                                 pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
1189                                         ((toggle ^ 0x4000) + 1);
1190                                 doneq_index = pmu->doneq_index;
1191                                 spin_unlock_irqrestore(&acb->doneq_lock, flags);
1192                                 addressLow = pmu->done_qbuffer[doneq_index &
1193                                         0xFFF].addressLow;
1194                                 ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
1195                                 pARCMSR_CDB = (struct  ARCMSR_CDB *)
1196                                         (acb->vir2phy_offset + ccb_cdb_phy);
1197                                 pCCB = container_of(pARCMSR_CDB,
1198                                         struct CommandControlBlock, arcmsr_cdb);
1199                                 error = (addressLow &
1200                                         ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ?
1201                                         true : false;
1202                                 arcmsr_drain_donequeue(acb, pCCB, error);
1203                                 writel(doneq_index,
1204                                         pmu->outboundlist_read_pointer);
1205                         } else {
1206                                 spin_unlock_irqrestore(&acb->doneq_lock, flags);
1207                                 mdelay(10);
1208                         }
1209                 }
1210                 pmu->postq_index = 0;
1211                 pmu->doneq_index = 0x40FF;
1212                 }
1213                 break;
1214         }
1215 }
1216
1217 static void arcmsr_remove(struct pci_dev *pdev)
1218 {
1219         struct Scsi_Host *host = pci_get_drvdata(pdev);
1220         struct AdapterControlBlock *acb =
1221                 (struct AdapterControlBlock *) host->hostdata;
1222         int poll_count = 0;
1223         arcmsr_free_sysfs_attr(acb);
1224         scsi_remove_host(host);
1225         flush_work(&acb->arcmsr_do_message_isr_bh);
1226         del_timer_sync(&acb->eternal_timer);
1227         arcmsr_disable_outbound_ints(acb);
1228         arcmsr_stop_adapter_bgrb(acb);
1229         arcmsr_flush_adapter_cache(acb);
1230         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1231         acb->acb_flags &= ~ACB_F_IOP_INITED;
1232
1233         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1234                 if (!atomic_read(&acb->ccboutstandingcount))
1235                         break;
1236                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1237                 msleep(25);
1238         }
1239
1240         if (atomic_read(&acb->ccboutstandingcount)) {
1241                 int i;
1242
1243                 arcmsr_abort_allcmd(acb);
1244                 arcmsr_done4abort_postqueue(acb);
1245                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1246                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
1247                         if (ccb->startdone == ARCMSR_CCB_START) {
1248                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1249                                 ccb->pcmd->result = DID_ABORT << 16;
1250                                 arcmsr_ccb_complete(ccb);
1251                         }
1252                 }
1253         }
1254         arcmsr_free_irq(pdev, acb);
1255         arcmsr_free_ccb_pool(acb);
1256         arcmsr_free_mu(acb);
1257         arcmsr_unmap_pciregion(acb);
1258         pci_release_regions(pdev);
1259         scsi_host_put(host);
1260         pci_disable_device(pdev);
1261 }
1262
1263 static void arcmsr_shutdown(struct pci_dev *pdev)
1264 {
1265         struct Scsi_Host *host = pci_get_drvdata(pdev);
1266         struct AdapterControlBlock *acb =
1267                 (struct AdapterControlBlock *)host->hostdata;
1268         del_timer_sync(&acb->eternal_timer);
1269         arcmsr_disable_outbound_ints(acb);
1270         arcmsr_free_irq(pdev, acb);
1271         flush_work(&acb->arcmsr_do_message_isr_bh);
1272         arcmsr_stop_adapter_bgrb(acb);
1273         arcmsr_flush_adapter_cache(acb);
1274 }
1275
1276 static int arcmsr_module_init(void)
1277 {
1278         int error = 0;
1279         error = pci_register_driver(&arcmsr_pci_driver);
1280         return error;
1281 }
1282
1283 static void arcmsr_module_exit(void)
1284 {
1285         pci_unregister_driver(&arcmsr_pci_driver);
1286 }
1287 module_init(arcmsr_module_init);
1288 module_exit(arcmsr_module_exit);
1289
1290 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1291                                                 u32 intmask_org)
1292 {
1293         u32 mask;
1294         switch (acb->adapter_type) {
1295
1296         case ACB_ADAPTER_TYPE_A: {
1297                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1298                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1299                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1300                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1301                 writel(mask, &reg->outbound_intmask);
1302                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1303                 }
1304                 break;
1305
1306         case ACB_ADAPTER_TYPE_B: {
1307                 struct MessageUnit_B *reg = acb->pmuB;
1308                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1309                         ARCMSR_IOP2DRV_DATA_READ_OK |
1310                         ARCMSR_IOP2DRV_CDB_DONE |
1311                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1312                 writel(mask, reg->iop2drv_doorbell_mask);
1313                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1314                 }
1315                 break;
1316         case ACB_ADAPTER_TYPE_C: {
1317                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1318                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1319                 writel(intmask_org & mask, &reg->host_int_mask);
1320                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1321                 }
1322                 break;
1323         case ACB_ADAPTER_TYPE_D: {
1324                 struct MessageUnit_D *reg = acb->pmuD;
1325
1326                 mask = ARCMSR_ARC1214_ALL_INT_ENABLE;
1327                 writel(intmask_org | mask, reg->pcief0_int_enable);
1328                 break;
1329                 }
1330         }
1331 }
1332
1333 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1334         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1335 {
1336         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1337         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1338         __le32 address_lo, address_hi;
1339         int arccdbsize = 0x30;
1340         __le32 length = 0;
1341         int i;
1342         struct scatterlist *sg;
1343         int nseg;
1344         ccb->pcmd = pcmd;
1345         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1346         arcmsr_cdb->TargetID = pcmd->device->id;
1347         arcmsr_cdb->LUN = pcmd->device->lun;
1348         arcmsr_cdb->Function = 1;
1349         arcmsr_cdb->msgContext = 0;
1350         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1351
1352         nseg = scsi_dma_map(pcmd);
1353         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1354                 return FAILED;
1355         scsi_for_each_sg(pcmd, sg, nseg, i) {
1356                 /* Get the physical address of the current data pointer */
1357                 length = cpu_to_le32(sg_dma_len(sg));
1358                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1359                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1360                 if (address_hi == 0) {
1361                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1362
1363                         pdma_sg->address = address_lo;
1364                         pdma_sg->length = length;
1365                         psge += sizeof (struct SG32ENTRY);
1366                         arccdbsize += sizeof (struct SG32ENTRY);
1367                 } else {
1368                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1369
1370                         pdma_sg->addresshigh = address_hi;
1371                         pdma_sg->address = address_lo;
1372                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1373                         psge += sizeof (struct SG64ENTRY);
1374                         arccdbsize += sizeof (struct SG64ENTRY);
1375                 }
1376         }
1377         arcmsr_cdb->sgcount = (uint8_t)nseg;
1378         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1379         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1380         if ( arccdbsize > 256)
1381                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1382         if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1383                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1384         ccb->arc_cdb_size = arccdbsize;
1385         return SUCCESS;
1386 }
1387
1388 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1389 {
1390         uint32_t cdb_phyaddr = ccb->cdb_phyaddr;
1391         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1392         atomic_inc(&acb->ccboutstandingcount);
1393         ccb->startdone = ARCMSR_CCB_START;
1394         switch (acb->adapter_type) {
1395         case ACB_ADAPTER_TYPE_A: {
1396                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1397
1398                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1399                         writel(cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1400                         &reg->inbound_queueport);
1401                 else
1402                         writel(cdb_phyaddr, &reg->inbound_queueport);
1403                 break;
1404         }
1405
1406         case ACB_ADAPTER_TYPE_B: {
1407                 struct MessageUnit_B *reg = acb->pmuB;
1408                 uint32_t ending_index, index = reg->postq_index;
1409
1410                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1411                 reg->post_qbuffer[ending_index] = 0;
1412                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1413                         reg->post_qbuffer[index] =
1414                                 cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE;
1415                 } else {
1416                         reg->post_qbuffer[index] = cdb_phyaddr;
1417                 }
1418                 index++;
1419                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1420                 reg->postq_index = index;
1421                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1422                 }
1423                 break;
1424         case ACB_ADAPTER_TYPE_C: {
1425                 struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
1426                 uint32_t ccb_post_stamp, arc_cdb_size;
1427
1428                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1429                 ccb_post_stamp = (cdb_phyaddr | ((arc_cdb_size - 1) >> 6) | 1);
1430                 if (acb->cdb_phyaddr_hi32) {
1431                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1432                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1433                 } else {
1434                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1435                 }
1436                 }
1437                 break;
1438         case ACB_ADAPTER_TYPE_D: {
1439                 struct MessageUnit_D  *pmu = acb->pmuD;
1440                 u16 index_stripped;
1441                 u16 postq_index, toggle;
1442                 unsigned long flags;
1443                 struct InBound_SRB *pinbound_srb;
1444
1445                 spin_lock_irqsave(&acb->postq_lock, flags);
1446                 postq_index = pmu->postq_index;
1447                 pinbound_srb = (struct InBound_SRB *)&(pmu->post_qbuffer[postq_index & 0xFF]);
1448                 pinbound_srb->addressHigh = dma_addr_hi32(cdb_phyaddr);
1449                 pinbound_srb->addressLow = dma_addr_lo32(cdb_phyaddr);
1450                 pinbound_srb->length = ccb->arc_cdb_size >> 2;
1451                 arcmsr_cdb->msgContext = dma_addr_lo32(cdb_phyaddr);
1452                 toggle = postq_index & 0x4000;
1453                 index_stripped = postq_index + 1;
1454                 index_stripped &= (ARCMSR_MAX_ARC1214_POSTQUEUE - 1);
1455                 pmu->postq_index = index_stripped ? (index_stripped | toggle) :
1456                         (toggle ^ 0x4000);
1457                 writel(postq_index, pmu->inboundlist_write_pointer);
1458                 spin_unlock_irqrestore(&acb->postq_lock, flags);
1459                 break;
1460                 }
1461         }
1462 }
1463
1464 static void arcmsr_hbaA_stop_bgrb(struct AdapterControlBlock *acb)
1465 {
1466         struct MessageUnit_A __iomem *reg = acb->pmuA;
1467         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1468         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1469         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
1470                 printk(KERN_NOTICE
1471                         "arcmsr%d: wait 'stop adapter background rebulid' timeout\n"
1472                         , acb->host->host_no);
1473         }
1474 }
1475
1476 static void arcmsr_hbaB_stop_bgrb(struct AdapterControlBlock *acb)
1477 {
1478         struct MessageUnit_B *reg = acb->pmuB;
1479         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1480         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1481
1482         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
1483                 printk(KERN_NOTICE
1484                         "arcmsr%d: wait 'stop adapter background rebulid' timeout\n"
1485                         , acb->host->host_no);
1486         }
1487 }
1488
1489 static void arcmsr_hbaC_stop_bgrb(struct AdapterControlBlock *pACB)
1490 {
1491         struct MessageUnit_C __iomem *reg = pACB->pmuC;
1492         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1493         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1494         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1495         if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
1496                 printk(KERN_NOTICE
1497                         "arcmsr%d: wait 'stop adapter background rebulid' timeout\n"
1498                         , pACB->host->host_no);
1499         }
1500         return;
1501 }
1502
1503 static void arcmsr_hbaD_stop_bgrb(struct AdapterControlBlock *pACB)
1504 {
1505         struct MessageUnit_D *reg = pACB->pmuD;
1506
1507         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1508         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, reg->inbound_msgaddr0);
1509         if (!arcmsr_hbaD_wait_msgint_ready(pACB))
1510                 pr_notice("arcmsr%d: wait 'stop adapter background rebulid' "
1511                         "timeout\n", pACB->host->host_no);
1512 }
1513
1514 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1515 {
1516         switch (acb->adapter_type) {
1517         case ACB_ADAPTER_TYPE_A: {
1518                 arcmsr_hbaA_stop_bgrb(acb);
1519                 }
1520                 break;
1521
1522         case ACB_ADAPTER_TYPE_B: {
1523                 arcmsr_hbaB_stop_bgrb(acb);
1524                 }
1525                 break;
1526         case ACB_ADAPTER_TYPE_C: {
1527                 arcmsr_hbaC_stop_bgrb(acb);
1528                 }
1529                 break;
1530         case ACB_ADAPTER_TYPE_D:
1531                 arcmsr_hbaD_stop_bgrb(acb);
1532                 break;
1533         }
1534 }
1535
1536 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1537 {
1538         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1539 }
1540
1541 static void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1542 {
1543         switch (acb->adapter_type) {
1544         case ACB_ADAPTER_TYPE_A: {
1545                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1546                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1547                 }
1548                 break;
1549
1550         case ACB_ADAPTER_TYPE_B: {
1551                 struct MessageUnit_B *reg = acb->pmuB;
1552                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1553                 }
1554                 break;
1555         case ACB_ADAPTER_TYPE_C: {
1556                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1557
1558                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1559                 }
1560                 break;
1561         case ACB_ADAPTER_TYPE_D: {
1562                 struct MessageUnit_D *reg = acb->pmuD;
1563                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
1564                         reg->inbound_doorbell);
1565                 }
1566                 break;
1567         }
1568 }
1569
1570 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1571 {
1572         switch (acb->adapter_type) {
1573         case ACB_ADAPTER_TYPE_A: {
1574                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1575                 /*
1576                 ** push inbound doorbell tell iop, driver data write ok
1577                 ** and wait reply on next hwinterrupt for next Qbuffer post
1578                 */
1579                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1580                 }
1581                 break;
1582
1583         case ACB_ADAPTER_TYPE_B: {
1584                 struct MessageUnit_B *reg = acb->pmuB;
1585                 /*
1586                 ** push inbound doorbell tell iop, driver data write ok
1587                 ** and wait reply on next hwinterrupt for next Qbuffer post
1588                 */
1589                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1590                 }
1591                 break;
1592         case ACB_ADAPTER_TYPE_C: {
1593                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1594                 /*
1595                 ** push inbound doorbell tell iop, driver data write ok
1596                 ** and wait reply on next hwinterrupt for next Qbuffer post
1597                 */
1598                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1599                 }
1600                 break;
1601         case ACB_ADAPTER_TYPE_D: {
1602                 struct MessageUnit_D *reg = acb->pmuD;
1603                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_IN_READY,
1604                         reg->inbound_doorbell);
1605                 }
1606                 break;
1607         }
1608 }
1609
1610 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1611 {
1612         struct QBUFFER __iomem *qbuffer = NULL;
1613         switch (acb->adapter_type) {
1614
1615         case ACB_ADAPTER_TYPE_A: {
1616                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1617                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1618                 }
1619                 break;
1620
1621         case ACB_ADAPTER_TYPE_B: {
1622                 struct MessageUnit_B *reg = acb->pmuB;
1623                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1624                 }
1625                 break;
1626         case ACB_ADAPTER_TYPE_C: {
1627                 struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
1628                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1629                 }
1630                 break;
1631         case ACB_ADAPTER_TYPE_D: {
1632                 struct MessageUnit_D *reg = acb->pmuD;
1633                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1634                 }
1635                 break;
1636         }
1637         return qbuffer;
1638 }
1639
1640 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1641 {
1642         struct QBUFFER __iomem *pqbuffer = NULL;
1643         switch (acb->adapter_type) {
1644
1645         case ACB_ADAPTER_TYPE_A: {
1646                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1647                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1648                 }
1649                 break;
1650
1651         case ACB_ADAPTER_TYPE_B: {
1652                 struct MessageUnit_B  *reg = acb->pmuB;
1653                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1654                 }
1655                 break;
1656         case ACB_ADAPTER_TYPE_C: {
1657                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1658                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1659                 }
1660                 break;
1661         case ACB_ADAPTER_TYPE_D: {
1662                 struct MessageUnit_D *reg = acb->pmuD;
1663                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1664                 }
1665                 break;
1666         }
1667         return pqbuffer;
1668 }
1669
1670 static uint32_t
1671 arcmsr_Read_iop_rqbuffer_in_DWORD(struct AdapterControlBlock *acb,
1672                 struct QBUFFER __iomem *prbuffer)
1673 {
1674         uint8_t *pQbuffer;
1675         uint8_t *buf1 = NULL;
1676         uint32_t __iomem *iop_data;
1677         uint32_t iop_len, data_len, *buf2 = NULL;
1678
1679         iop_data = (uint32_t __iomem *)prbuffer->data;
1680         iop_len = readl(&prbuffer->data_len);
1681         if (iop_len > 0) {
1682                 buf1 = kmalloc(128, GFP_ATOMIC);
1683                 buf2 = (uint32_t *)buf1;
1684                 if (buf1 == NULL)
1685                         return 0;
1686                 data_len = iop_len;
1687                 while (data_len >= 4) {
1688                         *buf2++ = readl(iop_data);
1689                         iop_data++;
1690                         data_len -= 4;
1691                 }
1692                 if (data_len)
1693                         *buf2 = readl(iop_data);
1694                 buf2 = (uint32_t *)buf1;
1695         }
1696         while (iop_len > 0) {
1697                 pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
1698                 *pQbuffer = *buf1;
1699                 acb->rqbuf_putIndex++;
1700                 /* if last, index number set it to 0 */
1701                 acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
1702                 buf1++;
1703                 iop_len--;
1704         }
1705         kfree(buf2);
1706         /* let IOP know data has been read */
1707         arcmsr_iop_message_read(acb);
1708         return 1;
1709 }
1710
1711 uint32_t
1712 arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *acb,
1713         struct QBUFFER __iomem *prbuffer) {
1714
1715         uint8_t *pQbuffer;
1716         uint8_t __iomem *iop_data;
1717         uint32_t iop_len;
1718
1719         if (acb->adapter_type & (ACB_ADAPTER_TYPE_C | ACB_ADAPTER_TYPE_D))
1720                 return arcmsr_Read_iop_rqbuffer_in_DWORD(acb, prbuffer);
1721         iop_data = (uint8_t __iomem *)prbuffer->data;
1722         iop_len = readl(&prbuffer->data_len);
1723         while (iop_len > 0) {
1724                 pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
1725                 *pQbuffer = readb(iop_data);
1726                 acb->rqbuf_putIndex++;
1727                 acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
1728                 iop_data++;
1729                 iop_len--;
1730         }
1731         arcmsr_iop_message_read(acb);
1732         return 1;
1733 }
1734
1735 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1736 {
1737         unsigned long flags;
1738         struct QBUFFER __iomem  *prbuffer;
1739         int32_t buf_empty_len;
1740
1741         spin_lock_irqsave(&acb->rqbuffer_lock, flags);
1742         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1743         buf_empty_len = (acb->rqbuf_putIndex - acb->rqbuf_getIndex - 1) &
1744                 (ARCMSR_MAX_QBUFFER - 1);
1745         if (buf_empty_len >= readl(&prbuffer->data_len)) {
1746                 if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
1747                         acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1748         } else
1749                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1750         spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
1751 }
1752
1753 static void arcmsr_write_ioctldata2iop_in_DWORD(struct AdapterControlBlock *acb)
1754 {
1755         uint8_t *pQbuffer;
1756         struct QBUFFER __iomem *pwbuffer;
1757         uint8_t *buf1 = NULL;
1758         uint32_t __iomem *iop_data;
1759         uint32_t allxfer_len = 0, data_len, *buf2 = NULL, data;
1760
1761         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1762                 buf1 = kmalloc(128, GFP_ATOMIC);
1763                 buf2 = (uint32_t *)buf1;
1764                 if (buf1 == NULL)
1765                         return;
1766
1767                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1768                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1769                 iop_data = (uint32_t __iomem *)pwbuffer->data;
1770                 while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
1771                         && (allxfer_len < 124)) {
1772                         pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
1773                         *buf1 = *pQbuffer;
1774                         acb->wqbuf_getIndex++;
1775                         acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
1776                         buf1++;
1777                         allxfer_len++;
1778                 }
1779                 data_len = allxfer_len;
1780                 buf1 = (uint8_t *)buf2;
1781                 while (data_len >= 4) {
1782                         data = *buf2++;
1783                         writel(data, iop_data);
1784                         iop_data++;
1785                         data_len -= 4;
1786                 }
1787                 if (data_len) {
1788                         data = *buf2;
1789                         writel(data, iop_data);
1790                 }
1791                 writel(allxfer_len, &pwbuffer->data_len);
1792                 kfree(buf1);
1793                 arcmsr_iop_message_wrote(acb);
1794         }
1795 }
1796
1797 void
1798 arcmsr_write_ioctldata2iop(struct AdapterControlBlock *acb)
1799 {
1800         uint8_t *pQbuffer;
1801         struct QBUFFER __iomem *pwbuffer;
1802         uint8_t __iomem *iop_data;
1803         int32_t allxfer_len = 0;
1804
1805         if (acb->adapter_type & (ACB_ADAPTER_TYPE_C | ACB_ADAPTER_TYPE_D)) {
1806                 arcmsr_write_ioctldata2iop_in_DWORD(acb);
1807                 return;
1808         }
1809         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1810                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1811                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1812                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1813                 while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
1814                         && (allxfer_len < 124)) {
1815                         pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
1816                         writeb(*pQbuffer, iop_data);
1817                         acb->wqbuf_getIndex++;
1818                         acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
1819                         iop_data++;
1820                         allxfer_len++;
1821                 }
1822                 writel(allxfer_len, &pwbuffer->data_len);
1823                 arcmsr_iop_message_wrote(acb);
1824         }
1825 }
1826
1827 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1828 {
1829         unsigned long flags;
1830
1831         spin_lock_irqsave(&acb->wqbuffer_lock, flags);
1832         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1833         if (acb->wqbuf_getIndex != acb->wqbuf_putIndex)
1834                 arcmsr_write_ioctldata2iop(acb);
1835         if (acb->wqbuf_getIndex == acb->wqbuf_putIndex)
1836                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1837         spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
1838 }
1839
1840 static void arcmsr_hbaA_doorbell_isr(struct AdapterControlBlock *acb)
1841 {
1842         uint32_t outbound_doorbell;
1843         struct MessageUnit_A __iomem *reg = acb->pmuA;
1844         outbound_doorbell = readl(&reg->outbound_doorbell);
1845         do {
1846                 writel(outbound_doorbell, &reg->outbound_doorbell);
1847                 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK)
1848                         arcmsr_iop2drv_data_wrote_handle(acb);
1849                 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK)
1850                         arcmsr_iop2drv_data_read_handle(acb);
1851                 outbound_doorbell = readl(&reg->outbound_doorbell);
1852         } while (outbound_doorbell & (ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK
1853                 | ARCMSR_OUTBOUND_IOP331_DATA_READ_OK));
1854 }
1855 static void arcmsr_hbaC_doorbell_isr(struct AdapterControlBlock *pACB)
1856 {
1857         uint32_t outbound_doorbell;
1858         struct MessageUnit_C __iomem *reg = pACB->pmuC;
1859         /*
1860         *******************************************************************
1861         **  Maybe here we need to check wrqbuffer_lock is lock or not
1862         **  DOORBELL: din! don!
1863         **  check if there are any mail need to pack from firmware
1864         *******************************************************************
1865         */
1866         outbound_doorbell = readl(&reg->outbound_doorbell);
1867         do {
1868                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
1869                 readl(&reg->outbound_doorbell_clear);
1870                 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK)
1871                         arcmsr_iop2drv_data_wrote_handle(pACB);
1872                 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK)
1873                         arcmsr_iop2drv_data_read_handle(pACB);
1874                 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE)
1875                         arcmsr_hbaC_message_isr(pACB);
1876                 outbound_doorbell = readl(&reg->outbound_doorbell);
1877         } while (outbound_doorbell & (ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK
1878                 | ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK
1879                 | ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE));
1880 }
1881
1882 static void arcmsr_hbaD_doorbell_isr(struct AdapterControlBlock *pACB)
1883 {
1884         uint32_t outbound_doorbell;
1885         struct MessageUnit_D  *pmu = pACB->pmuD;
1886
1887         outbound_doorbell = readl(pmu->outbound_doorbell);
1888         do {
1889                 writel(outbound_doorbell, pmu->outbound_doorbell);
1890                 if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE)
1891                         arcmsr_hbaD_message_isr(pACB);
1892                 if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK)
1893                         arcmsr_iop2drv_data_wrote_handle(pACB);
1894                 if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_DATA_READ_OK)
1895                         arcmsr_iop2drv_data_read_handle(pACB);
1896                 outbound_doorbell = readl(pmu->outbound_doorbell);
1897         } while (outbound_doorbell & (ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK
1898                 | ARCMSR_ARC1214_IOP2DRV_DATA_READ_OK
1899                 | ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE));
1900 }
1901
1902 static void arcmsr_hbaA_postqueue_isr(struct AdapterControlBlock *acb)
1903 {
1904         uint32_t flag_ccb;
1905         struct MessageUnit_A __iomem *reg = acb->pmuA;
1906         struct ARCMSR_CDB *pARCMSR_CDB;
1907         struct CommandControlBlock *pCCB;
1908         bool error;
1909         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1910                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1911                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1912                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1913                 arcmsr_drain_donequeue(acb, pCCB, error);
1914         }
1915 }
1916 static void arcmsr_hbaB_postqueue_isr(struct AdapterControlBlock *acb)
1917 {
1918         uint32_t index;
1919         uint32_t flag_ccb;
1920         struct MessageUnit_B *reg = acb->pmuB;
1921         struct ARCMSR_CDB *pARCMSR_CDB;
1922         struct CommandControlBlock *pCCB;
1923         bool error;
1924         index = reg->doneq_index;
1925         while ((flag_ccb = reg->done_qbuffer[index]) != 0) {
1926                 reg->done_qbuffer[index] = 0;
1927                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1928                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1929                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1930                 arcmsr_drain_donequeue(acb, pCCB, error);
1931                 index++;
1932                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1933                 reg->doneq_index = index;
1934         }
1935 }
1936
1937 static void arcmsr_hbaC_postqueue_isr(struct AdapterControlBlock *acb)
1938 {
1939         struct MessageUnit_C __iomem *phbcmu;
1940         struct ARCMSR_CDB *arcmsr_cdb;
1941         struct CommandControlBlock *ccb;
1942         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1943         int error;
1944
1945         phbcmu = acb->pmuC;
1946         /* areca cdb command done */
1947         /* Use correct offset and size for syncing */
1948
1949         while ((flag_ccb = readl(&phbcmu->outbound_queueport_low)) !=
1950                         0xFFFFFFFF) {
1951                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1952                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset
1953                         + ccb_cdb_phy);
1954                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock,
1955                         arcmsr_cdb);
1956                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
1957                         ? true : false;
1958                 /* check if command done with no error */
1959                 arcmsr_drain_donequeue(acb, ccb, error);
1960                 throttling++;
1961                 if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1962                         writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING,
1963                                 &phbcmu->inbound_doorbell);
1964                         throttling = 0;
1965                 }
1966         }
1967 }
1968
1969 static void arcmsr_hbaD_postqueue_isr(struct AdapterControlBlock *acb)
1970 {
1971         u32 outbound_write_pointer, doneq_index, index_stripped, toggle;
1972         uint32_t addressLow, ccb_cdb_phy;
1973         int error;
1974         struct MessageUnit_D  *pmu;
1975         struct ARCMSR_CDB *arcmsr_cdb;
1976         struct CommandControlBlock *ccb;
1977         unsigned long flags;
1978
1979         spin_lock_irqsave(&acb->doneq_lock, flags);
1980         pmu = acb->pmuD;
1981         outbound_write_pointer = pmu->done_qbuffer[0].addressLow + 1;
1982         doneq_index = pmu->doneq_index;
1983         if ((doneq_index & 0xFFF) != (outbound_write_pointer & 0xFFF)) {
1984                 do {
1985                         toggle = doneq_index & 0x4000;
1986                         index_stripped = (doneq_index & 0xFFF) + 1;
1987                         index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
1988                         pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
1989                                 ((toggle ^ 0x4000) + 1);
1990                         doneq_index = pmu->doneq_index;
1991                         addressLow = pmu->done_qbuffer[doneq_index &
1992                                 0xFFF].addressLow;
1993                         ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
1994                         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset
1995                                 + ccb_cdb_phy);
1996                         ccb = container_of(arcmsr_cdb,
1997                                 struct CommandControlBlock, arcmsr_cdb);
1998                         error = (addressLow & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
1999                                 ? true : false;
2000                         arcmsr_drain_donequeue(acb, ccb, error);
2001                         writel(doneq_index, pmu->outboundlist_read_pointer);
2002                 } while ((doneq_index & 0xFFF) !=
2003                         (outbound_write_pointer & 0xFFF));
2004         }
2005         writel(ARCMSR_ARC1214_OUTBOUND_LIST_INTERRUPT_CLEAR,
2006                 pmu->outboundlist_interrupt_cause);
2007         readl(pmu->outboundlist_interrupt_cause);
2008         spin_unlock_irqrestore(&acb->doneq_lock, flags);
2009 }
2010
2011 /*
2012 **********************************************************************************
2013 ** Handle a message interrupt
2014 **
2015 ** The only message interrupt we expect is in response to a query for the current adapter config.
2016 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
2017 **********************************************************************************
2018 */
2019 static void arcmsr_hbaA_message_isr(struct AdapterControlBlock *acb)
2020 {
2021         struct MessageUnit_A __iomem *reg  = acb->pmuA;
2022         /*clear interrupt and message state*/
2023         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
2024         schedule_work(&acb->arcmsr_do_message_isr_bh);
2025 }
2026 static void arcmsr_hbaB_message_isr(struct AdapterControlBlock *acb)
2027 {
2028         struct MessageUnit_B *reg  = acb->pmuB;
2029
2030         /*clear interrupt and message state*/
2031         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2032         schedule_work(&acb->arcmsr_do_message_isr_bh);
2033 }
2034 /*
2035 **********************************************************************************
2036 ** Handle a message interrupt
2037 **
2038 ** The only message interrupt we expect is in response to a query for the
2039 ** current adapter config.
2040 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
2041 **********************************************************************************
2042 */
2043 static void arcmsr_hbaC_message_isr(struct AdapterControlBlock *acb)
2044 {
2045         struct MessageUnit_C __iomem *reg  = acb->pmuC;
2046         /*clear interrupt and message state*/
2047         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
2048         schedule_work(&acb->arcmsr_do_message_isr_bh);
2049 }
2050
2051 static void arcmsr_hbaD_message_isr(struct AdapterControlBlock *acb)
2052 {
2053         struct MessageUnit_D *reg  = acb->pmuD;
2054
2055         writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE, reg->outbound_doorbell);
2056         readl(reg->outbound_doorbell);
2057         schedule_work(&acb->arcmsr_do_message_isr_bh);
2058 }
2059
2060 static int arcmsr_hbaA_handle_isr(struct AdapterControlBlock *acb)
2061 {
2062         uint32_t outbound_intstatus;
2063         struct MessageUnit_A __iomem *reg = acb->pmuA;
2064         outbound_intstatus = readl(&reg->outbound_intstatus) &
2065                 acb->outbound_int_enable;
2066         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
2067                 return IRQ_NONE;
2068         do {
2069                 writel(outbound_intstatus, &reg->outbound_intstatus);
2070                 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)
2071                         arcmsr_hbaA_doorbell_isr(acb);
2072                 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT)
2073                         arcmsr_hbaA_postqueue_isr(acb);
2074                 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)
2075                         arcmsr_hbaA_message_isr(acb);
2076                 outbound_intstatus = readl(&reg->outbound_intstatus) &
2077                         acb->outbound_int_enable;
2078         } while (outbound_intstatus & (ARCMSR_MU_OUTBOUND_DOORBELL_INT
2079                 | ARCMSR_MU_OUTBOUND_POSTQUEUE_INT
2080                 | ARCMSR_MU_OUTBOUND_MESSAGE0_INT));
2081         return IRQ_HANDLED;
2082 }
2083
2084 static int arcmsr_hbaB_handle_isr(struct AdapterControlBlock *acb)
2085 {
2086         uint32_t outbound_doorbell;
2087         struct MessageUnit_B *reg = acb->pmuB;
2088         outbound_doorbell = readl(reg->iop2drv_doorbell) &
2089                                 acb->outbound_int_enable;
2090         if (!outbound_doorbell)
2091                 return IRQ_NONE;
2092         do {
2093                 writel(~outbound_doorbell, reg->iop2drv_doorbell);
2094                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2095                 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK)
2096                         arcmsr_iop2drv_data_wrote_handle(acb);
2097                 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK)
2098                         arcmsr_iop2drv_data_read_handle(acb);
2099                 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE)
2100                         arcmsr_hbaB_postqueue_isr(acb);
2101                 if (outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE)
2102                         arcmsr_hbaB_message_isr(acb);
2103                 outbound_doorbell = readl(reg->iop2drv_doorbell) &
2104                         acb->outbound_int_enable;
2105         } while (outbound_doorbell & (ARCMSR_IOP2DRV_DATA_WRITE_OK
2106                 | ARCMSR_IOP2DRV_DATA_READ_OK
2107                 | ARCMSR_IOP2DRV_CDB_DONE
2108                 | ARCMSR_IOP2DRV_MESSAGE_CMD_DONE));
2109         return IRQ_HANDLED;
2110 }
2111
2112 static int arcmsr_hbaC_handle_isr(struct AdapterControlBlock *pACB)
2113 {
2114         uint32_t host_interrupt_status;
2115         struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
2116         /*
2117         *********************************************
2118         **   check outbound intstatus
2119         *********************************************
2120         */
2121         host_interrupt_status = readl(&phbcmu->host_int_status) &
2122                 (ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR |
2123                 ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR);
2124         if (!host_interrupt_status)
2125                 return IRQ_NONE;
2126         do {
2127                 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR)
2128                         arcmsr_hbaC_doorbell_isr(pACB);
2129                 /* MU post queue interrupts*/
2130                 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR)
2131                         arcmsr_hbaC_postqueue_isr(pACB);
2132                 host_interrupt_status = readl(&phbcmu->host_int_status);
2133         } while (host_interrupt_status & (ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR |
2134                 ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR));
2135         return IRQ_HANDLED;
2136 }
2137
2138 static irqreturn_t arcmsr_hbaD_handle_isr(struct AdapterControlBlock *pACB)
2139 {
2140         u32 host_interrupt_status;
2141         struct MessageUnit_D  *pmu = pACB->pmuD;
2142
2143         host_interrupt_status = readl(pmu->host_int_status) &
2144                 (ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
2145                 ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR);
2146         if (!host_interrupt_status)
2147                 return IRQ_NONE;
2148         do {
2149                 /* MU post queue interrupts*/
2150                 if (host_interrupt_status &
2151                         ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR)
2152                         arcmsr_hbaD_postqueue_isr(pACB);
2153                 if (host_interrupt_status &
2154                         ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR)
2155                         arcmsr_hbaD_doorbell_isr(pACB);
2156                 host_interrupt_status = readl(pmu->host_int_status);
2157         } while (host_interrupt_status &
2158                 (ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
2159                 ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR));
2160         return IRQ_HANDLED;
2161 }
2162
2163 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
2164 {
2165         switch (acb->adapter_type) {
2166         case ACB_ADAPTER_TYPE_A:
2167                 return arcmsr_hbaA_handle_isr(acb);
2168                 break;
2169         case ACB_ADAPTER_TYPE_B:
2170                 return arcmsr_hbaB_handle_isr(acb);
2171                 break;
2172         case ACB_ADAPTER_TYPE_C:
2173                 return arcmsr_hbaC_handle_isr(acb);
2174         case ACB_ADAPTER_TYPE_D:
2175                 return arcmsr_hbaD_handle_isr(acb);
2176         default:
2177                 return IRQ_NONE;
2178         }
2179 }
2180
2181 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
2182 {
2183         if (acb) {
2184                 /* stop adapter background rebuild */
2185                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
2186                         uint32_t intmask_org;
2187                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
2188                         intmask_org = arcmsr_disable_outbound_ints(acb);
2189                         arcmsr_stop_adapter_bgrb(acb);
2190                         arcmsr_flush_adapter_cache(acb);
2191                         arcmsr_enable_outbound_ints(acb, intmask_org);
2192                 }
2193         }
2194 }
2195
2196
2197 void arcmsr_clear_iop2drv_rqueue_buffer(struct AdapterControlBlock *acb)
2198 {
2199         uint32_t        i;
2200
2201         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
2202                 for (i = 0; i < 15; i++) {
2203                         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
2204                                 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
2205                                 acb->rqbuf_getIndex = 0;
2206                                 acb->rqbuf_putIndex = 0;
2207                                 arcmsr_iop_message_read(acb);
2208                                 mdelay(30);
2209                         } else if (acb->rqbuf_getIndex !=
2210                                    acb->rqbuf_putIndex) {
2211                                 acb->rqbuf_getIndex = 0;
2212                                 acb->rqbuf_putIndex = 0;
2213                                 mdelay(30);
2214                         } else
2215                                 break;
2216                 }
2217         }
2218 }
2219
2220 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
2221                 struct scsi_cmnd *cmd)
2222 {
2223         char *buffer;
2224         unsigned short use_sg;
2225         int retvalue = 0, transfer_len = 0;
2226         unsigned long flags;
2227         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
2228         uint32_t controlcode = (uint32_t)cmd->cmnd[5] << 24 |
2229                 (uint32_t)cmd->cmnd[6] << 16 |
2230                 (uint32_t)cmd->cmnd[7] << 8 |
2231                 (uint32_t)cmd->cmnd[8];
2232         struct scatterlist *sg;
2233
2234         use_sg = scsi_sg_count(cmd);
2235         sg = scsi_sglist(cmd);
2236         buffer = kmap_atomic(sg_page(sg)) + sg->offset;
2237         if (use_sg > 1) {
2238                 retvalue = ARCMSR_MESSAGE_FAIL;
2239                 goto message_out;
2240         }
2241         transfer_len += sg->length;
2242         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
2243                 retvalue = ARCMSR_MESSAGE_FAIL;
2244                 pr_info("%s: ARCMSR_MESSAGE_FAIL!\n", __func__);
2245                 goto message_out;
2246         }
2247         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *)buffer;
2248         switch (controlcode) {
2249         case ARCMSR_MESSAGE_READ_RQBUFFER: {
2250                 unsigned char *ver_addr;
2251                 uint8_t *ptmpQbuffer;
2252                 uint32_t allxfer_len = 0;
2253                 ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
2254                 if (!ver_addr) {
2255                         retvalue = ARCMSR_MESSAGE_FAIL;
2256                         pr_info("%s: memory not enough!\n", __func__);
2257                         goto message_out;
2258                 }
2259                 ptmpQbuffer = ver_addr;
2260                 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
2261                 if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) {
2262                         unsigned int tail = acb->rqbuf_getIndex;
2263                         unsigned int head = acb->rqbuf_putIndex;
2264                         unsigned int cnt_to_end = CIRC_CNT_TO_END(head, tail, ARCMSR_MAX_QBUFFER);
2265
2266                         allxfer_len = CIRC_CNT(head, tail, ARCMSR_MAX_QBUFFER);
2267                         if (allxfer_len > ARCMSR_API_DATA_BUFLEN)
2268                                 allxfer_len = ARCMSR_API_DATA_BUFLEN;
2269
2270                         if (allxfer_len <= cnt_to_end)
2271                                 memcpy(ptmpQbuffer, acb->rqbuffer + tail, allxfer_len);
2272                         else {
2273                                 memcpy(ptmpQbuffer, acb->rqbuffer + tail, cnt_to_end);
2274                                 memcpy(ptmpQbuffer + cnt_to_end, acb->rqbuffer, allxfer_len - cnt_to_end);
2275                         }
2276                         acb->rqbuf_getIndex = (acb->rqbuf_getIndex + allxfer_len) % ARCMSR_MAX_QBUFFER;
2277                 }
2278                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr,
2279                         allxfer_len);
2280                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
2281                         struct QBUFFER __iomem *prbuffer;
2282                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
2283                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
2284                         if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
2285                                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
2286                 }
2287                 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
2288                 kfree(ver_addr);
2289                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
2290                 if (acb->fw_flag == FW_DEADLOCK)
2291                         pcmdmessagefld->cmdmessage.ReturnCode =
2292                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2293                 else
2294                         pcmdmessagefld->cmdmessage.ReturnCode =
2295                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2296                 break;
2297         }
2298         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
2299                 unsigned char *ver_addr;
2300                 uint32_t user_len;
2301                 int32_t cnt2end;
2302                 uint8_t *pQbuffer, *ptmpuserbuffer;
2303
2304                 user_len = pcmdmessagefld->cmdmessage.Length;
2305                 if (user_len > ARCMSR_API_DATA_BUFLEN) {
2306                         retvalue = ARCMSR_MESSAGE_FAIL;
2307                         goto message_out;
2308                 }
2309
2310                 ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
2311                 if (!ver_addr) {
2312                         retvalue = ARCMSR_MESSAGE_FAIL;
2313                         goto message_out;
2314                 }
2315                 ptmpuserbuffer = ver_addr;
2316
2317                 memcpy(ptmpuserbuffer,
2318                         pcmdmessagefld->messagedatabuffer, user_len);
2319                 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
2320                 if (acb->wqbuf_putIndex != acb->wqbuf_getIndex) {
2321                         struct SENSE_DATA *sensebuffer =
2322                                 (struct SENSE_DATA *)cmd->sense_buffer;
2323                         arcmsr_write_ioctldata2iop(acb);
2324                         /* has error report sensedata */
2325                         sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
2326                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
2327                         sensebuffer->AdditionalSenseLength = 0x0A;
2328                         sensebuffer->AdditionalSenseCode = 0x20;
2329                         sensebuffer->Valid = 1;
2330                         retvalue = ARCMSR_MESSAGE_FAIL;
2331                 } else {
2332                         pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex];
2333                         cnt2end = ARCMSR_MAX_QBUFFER - acb->wqbuf_putIndex;
2334                         if (user_len > cnt2end) {
2335                                 memcpy(pQbuffer, ptmpuserbuffer, cnt2end);
2336                                 ptmpuserbuffer += cnt2end;
2337                                 user_len -= cnt2end;
2338                                 acb->wqbuf_putIndex = 0;
2339                                 pQbuffer = acb->wqbuffer;
2340                         }
2341                         memcpy(pQbuffer, ptmpuserbuffer, user_len);
2342                         acb->wqbuf_putIndex += user_len;
2343                         acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
2344                         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
2345                                 acb->acb_flags &=
2346                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
2347                                 arcmsr_write_ioctldata2iop(acb);
2348                         }
2349                 }
2350                 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
2351                 kfree(ver_addr);
2352                 if (acb->fw_flag == FW_DEADLOCK)
2353                         pcmdmessagefld->cmdmessage.ReturnCode =
2354                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2355                 else
2356                         pcmdmessagefld->cmdmessage.ReturnCode =
2357                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2358                 break;
2359         }
2360         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
2361                 uint8_t *pQbuffer = acb->rqbuffer;
2362
2363                 arcmsr_clear_iop2drv_rqueue_buffer(acb);
2364                 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
2365                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
2366                 acb->rqbuf_getIndex = 0;
2367                 acb->rqbuf_putIndex = 0;
2368                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
2369                 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
2370                 if (acb->fw_flag == FW_DEADLOCK)
2371                         pcmdmessagefld->cmdmessage.ReturnCode =
2372                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2373                 else
2374                         pcmdmessagefld->cmdmessage.ReturnCode =
2375                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2376                 break;
2377         }
2378         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
2379                 uint8_t *pQbuffer = acb->wqbuffer;
2380                 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
2381                 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
2382                         ACB_F_MESSAGE_WQBUFFER_READED);
2383                 acb->wqbuf_getIndex = 0;
2384                 acb->wqbuf_putIndex = 0;
2385                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
2386                 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
2387                 if (acb->fw_flag == FW_DEADLOCK)
2388                         pcmdmessagefld->cmdmessage.ReturnCode =
2389                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2390                 else
2391                         pcmdmessagefld->cmdmessage.ReturnCode =
2392                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2393                 break;
2394         }
2395         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
2396                 uint8_t *pQbuffer;
2397                 arcmsr_clear_iop2drv_rqueue_buffer(acb);
2398                 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
2399                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
2400                 acb->rqbuf_getIndex = 0;
2401                 acb->rqbuf_putIndex = 0;
2402                 pQbuffer = acb->rqbuffer;
2403                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
2404                 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
2405                 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
2406                 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
2407                         ACB_F_MESSAGE_WQBUFFER_READED);
2408                 acb->wqbuf_getIndex = 0;
2409                 acb->wqbuf_putIndex = 0;
2410                 pQbuffer = acb->wqbuffer;
2411                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
2412                 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
2413                 if (acb->fw_flag == FW_DEADLOCK)
2414                         pcmdmessagefld->cmdmessage.ReturnCode =
2415                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2416                 else
2417                         pcmdmessagefld->cmdmessage.ReturnCode =
2418                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2419                 break;
2420         }
2421         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
2422                 if (acb->fw_flag == FW_DEADLOCK)
2423                         pcmdmessagefld->cmdmessage.ReturnCode =
2424                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2425                 else
2426                         pcmdmessagefld->cmdmessage.ReturnCode =
2427                                 ARCMSR_MESSAGE_RETURNCODE_3F;
2428                 break;
2429         }
2430         case ARCMSR_MESSAGE_SAY_HELLO: {
2431                 int8_t *hello_string = "Hello! I am ARCMSR";
2432                 if (acb->fw_flag == FW_DEADLOCK)
2433                         pcmdmessagefld->cmdmessage.ReturnCode =
2434                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2435                 else
2436                         pcmdmessagefld->cmdmessage.ReturnCode =
2437                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2438                 memcpy(pcmdmessagefld->messagedatabuffer,
2439                         hello_string, (int16_t)strlen(hello_string));
2440                 break;
2441         }
2442         case ARCMSR_MESSAGE_SAY_GOODBYE: {
2443                 if (acb->fw_flag == FW_DEADLOCK)
2444                         pcmdmessagefld->cmdmessage.ReturnCode =
2445                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2446                 else
2447                         pcmdmessagefld->cmdmessage.ReturnCode =
2448                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2449                 arcmsr_iop_parking(acb);
2450                 break;
2451         }
2452         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: {
2453                 if (acb->fw_flag == FW_DEADLOCK)
2454                         pcmdmessagefld->cmdmessage.ReturnCode =
2455                                 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2456                 else
2457                         pcmdmessagefld->cmdmessage.ReturnCode =
2458                                 ARCMSR_MESSAGE_RETURNCODE_OK;
2459                 arcmsr_flush_adapter_cache(acb);
2460                 break;
2461         }
2462         default:
2463                 retvalue = ARCMSR_MESSAGE_FAIL;
2464                 pr_info("%s: unknown controlcode!\n", __func__);
2465         }
2466 message_out:
2467         if (use_sg) {
2468                 struct scatterlist *sg = scsi_sglist(cmd);
2469                 kunmap_atomic(buffer - sg->offset);
2470         }
2471         return retvalue;
2472 }
2473
2474 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
2475 {
2476         struct list_head *head = &acb->ccb_free_list;
2477         struct CommandControlBlock *ccb = NULL;
2478         unsigned long flags;
2479         spin_lock_irqsave(&acb->ccblist_lock, flags);
2480         if (!list_empty(head)) {
2481                 ccb = list_entry(head->next, struct CommandControlBlock, list);
2482                 list_del_init(&ccb->list);
2483         }else{
2484                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2485                 return NULL;
2486         }
2487         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2488         return ccb;
2489 }
2490
2491 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2492                 struct scsi_cmnd *cmd)
2493 {
2494         switch (cmd->cmnd[0]) {
2495         case INQUIRY: {
2496                 unsigned char inqdata[36];
2497                 char *buffer;
2498                 struct scatterlist *sg;
2499
2500                 if (cmd->device->lun) {
2501                         cmd->result = (DID_TIME_OUT << 16);
2502                         cmd->scsi_done(cmd);
2503                         return;
2504                 }
2505                 inqdata[0] = TYPE_PROCESSOR;
2506                 /* Periph Qualifier & Periph Dev Type */
2507                 inqdata[1] = 0;
2508                 /* rem media bit & Dev Type Modifier */
2509                 inqdata[2] = 0;
2510                 /* ISO, ECMA, & ANSI versions */
2511                 inqdata[4] = 31;
2512                 /* length of additional data */
2513                 strncpy(&inqdata[8], "Areca   ", 8);
2514                 /* Vendor Identification */
2515                 strncpy(&inqdata[16], "RAID controller ", 16);
2516                 /* Product Identification */
2517                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2518
2519                 sg = scsi_sglist(cmd);
2520                 buffer = kmap_atomic(sg_page(sg)) + sg->offset;
2521
2522                 memcpy(buffer, inqdata, sizeof(inqdata));
2523                 sg = scsi_sglist(cmd);
2524                 kunmap_atomic(buffer - sg->offset);
2525
2526                 cmd->scsi_done(cmd);
2527         }
2528         break;
2529         case WRITE_BUFFER:
2530         case READ_BUFFER: {
2531                 if (arcmsr_iop_message_xfer(acb, cmd))
2532                         cmd->result = (DID_ERROR << 16);
2533                 cmd->scsi_done(cmd);
2534         }
2535         break;
2536         default:
2537                 cmd->scsi_done(cmd);
2538         }
2539 }
2540
2541 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2542         void (* done)(struct scsi_cmnd *))
2543 {
2544         struct Scsi_Host *host = cmd->device->host;
2545         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2546         struct CommandControlBlock *ccb;
2547         int target = cmd->device->id;
2548         cmd->scsi_done = done;
2549         cmd->host_scribble = NULL;
2550         cmd->result = 0;
2551         if (target == 16) {
2552                 /* virtual device for iop message transfer */
2553                 arcmsr_handle_virtual_command(acb, cmd);
2554                 return 0;
2555         }
2556         ccb = arcmsr_get_freeccb(acb);
2557         if (!ccb)
2558                 return SCSI_MLQUEUE_HOST_BUSY;
2559         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2560                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2561                 cmd->scsi_done(cmd);
2562                 return 0;
2563         }
2564         arcmsr_post_ccb(acb, ccb);
2565         return 0;
2566 }
2567
2568 static DEF_SCSI_QCMD(arcmsr_queue_command)
2569
2570 static bool arcmsr_hbaA_get_config(struct AdapterControlBlock *acb)
2571 {
2572         struct MessageUnit_A __iomem *reg = acb->pmuA;
2573         char *acb_firm_model = acb->firm_model;
2574         char *acb_firm_version = acb->firm_version;
2575         char *acb_device_map = acb->device_map;
2576         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2577         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2578         char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2579         int count;
2580         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2581         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
2582                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2583                         miscellaneous data' timeout \n", acb->host->host_no);
2584                 return false;
2585         }
2586         count = 8;
2587         while (count){
2588                 *acb_firm_model = readb(iop_firm_model);
2589                 acb_firm_model++;
2590                 iop_firm_model++;
2591                 count--;
2592         }
2593
2594         count = 16;
2595         while (count){
2596                 *acb_firm_version = readb(iop_firm_version);
2597                 acb_firm_version++;
2598                 iop_firm_version++;
2599                 count--;
2600         }
2601
2602         count=16;
2603         while(count){
2604                 *acb_device_map = readb(iop_device_map);
2605                 acb_device_map++;
2606                 iop_device_map++;
2607                 count--;
2608         }
2609         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2610                 acb->host->host_no,
2611                 acb->firm_model,
2612                 acb->firm_version);
2613         acb->signature = readl(&reg->message_rwbuffer[0]);
2614         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2615         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2616         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2617         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2618         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2619         return true;
2620 }
2621 static bool arcmsr_hbaB_get_config(struct AdapterControlBlock *acb)
2622 {
2623         struct MessageUnit_B *reg = acb->pmuB;
2624         struct pci_dev *pdev = acb->pdev;
2625         void *dma_coherent;
2626         dma_addr_t dma_coherent_handle;
2627         char *acb_firm_model = acb->firm_model;
2628         char *acb_firm_version = acb->firm_version;
2629         char *acb_device_map = acb->device_map;
2630         char __iomem *iop_firm_model;
2631         /*firm_model,15,60-67*/
2632         char __iomem *iop_firm_version;
2633         /*firm_version,17,68-83*/
2634         char __iomem *iop_device_map;
2635         /*firm_version,21,84-99*/
2636         int count;
2637
2638         acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_B), 32);
2639         dma_coherent = dma_alloc_coherent(&pdev->dev, acb->roundup_ccbsize,
2640                         &dma_coherent_handle, GFP_KERNEL);
2641         if (!dma_coherent){
2642                 printk(KERN_NOTICE
2643                         "arcmsr%d: dma_alloc_coherent got error for hbb mu\n",
2644                         acb->host->host_no);
2645                 return false;
2646         }
2647         acb->dma_coherent_handle2 = dma_coherent_handle;
2648         acb->dma_coherent2 = dma_coherent;
2649         reg = (struct MessageUnit_B *)dma_coherent;
2650         acb->pmuB = reg;
2651         reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2652         reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2653         reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2654         reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2655         reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2656         reg->message_rbuffer =  (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2657         reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2658         iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2659         iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2660         iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2661
2662         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2663         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
2664                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2665                         miscellaneous data' timeout \n", acb->host->host_no);
2666                 goto err_free_dma;
2667         }
2668         count = 8;
2669         while (count){
2670                 *acb_firm_model = readb(iop_firm_model);
2671                 acb_firm_model++;
2672                 iop_firm_model++;
2673                 count--;
2674         }
2675         count = 16;
2676         while (count){
2677                 *acb_firm_version = readb(iop_firm_version);
2678                 acb_firm_version++;
2679                 iop_firm_version++;
2680                 count--;
2681         }
2682
2683         count = 16;
2684         while(count){
2685                 *acb_device_map = readb(iop_device_map);
2686                 acb_device_map++;
2687                 iop_device_map++;
2688                 count--;
2689         }
2690
2691         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2692                 acb->host->host_no,
2693                 acb->firm_model,
2694                 acb->firm_version);
2695
2696         acb->signature = readl(&reg->message_rwbuffer[0]);
2697         /*firm_signature,1,00-03*/
2698         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2699         /*firm_request_len,1,04-07*/
2700         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2701         /*firm_numbers_queue,2,08-11*/
2702         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2703         /*firm_sdram_size,3,12-15*/
2704         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2705         /*firm_ide_channels,4,16-19*/
2706         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2707         /*firm_ide_channels,4,16-19*/
2708         return true;
2709 err_free_dma:
2710         dma_free_coherent(&acb->pdev->dev, acb->roundup_ccbsize,
2711                         acb->dma_coherent2, acb->dma_coherent_handle2);
2712         return false;
2713 }
2714
2715 static bool arcmsr_hbaC_get_config(struct AdapterControlBlock *pACB)
2716 {
2717         uint32_t intmask_org, Index, firmware_state = 0;
2718         struct MessageUnit_C __iomem *reg = pACB->pmuC;
2719         char *acb_firm_model = pACB->firm_model;
2720         char *acb_firm_version = pACB->firm_version;
2721         char __iomem *iop_firm_model = (char __iomem *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2722         char __iomem *iop_firm_version = (char __iomem *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2723         int count;
2724         /* disable all outbound interrupt */
2725         intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2726         writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2727         /* wait firmware ready */
2728         do {
2729                 firmware_state = readl(&reg->outbound_msgaddr1);
2730         } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2731         /* post "get config" instruction */
2732         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2733         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2734         /* wait message ready */
2735         for (Index = 0; Index < 2000; Index++) {
2736                 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2737                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2738                         break;
2739                 }
2740                 udelay(10);
2741         } /*max 1 seconds*/
2742         if (Index >= 2000) {
2743                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2744                         miscellaneous data' timeout \n", pACB->host->host_no);
2745                 return false;
2746         }
2747         count = 8;
2748         while (count) {
2749                 *acb_firm_model = readb(iop_firm_model);
2750                 acb_firm_model++;
2751                 iop_firm_model++;
2752                 count--;
2753         }
2754         count = 16;
2755         while (count) {
2756                 *acb_firm_version = readb(iop_firm_version);
2757                 acb_firm_version++;
2758                 iop_firm_version++;
2759                 count--;
2760         }
2761         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2762                 pACB->host->host_no,
2763                 pACB->firm_model,
2764                 pACB->firm_version);
2765         pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2766         pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2767         pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2768         pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2769         pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2770         /*all interrupt service will be enable at arcmsr_iop_init*/
2771         return true;
2772 }
2773
2774 static bool arcmsr_hbaD_get_config(struct AdapterControlBlock *acb)
2775 {
2776         char *acb_firm_model = acb->firm_model;
2777         char *acb_firm_version = acb->firm_version;
2778         char *acb_device_map = acb->device_map;
2779         char __iomem *iop_firm_model;
2780         char __iomem *iop_firm_version;
2781         char __iomem *iop_device_map;
2782         u32 count;
2783         struct MessageUnit_D *reg;
2784         void *dma_coherent2;
2785         dma_addr_t dma_coherent_handle2;
2786         struct pci_dev *pdev = acb->pdev;
2787
2788         acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_D), 32);
2789         dma_coherent2 = dma_alloc_coherent(&pdev->dev, acb->roundup_ccbsize,
2790                 &dma_coherent_handle2, GFP_KERNEL);
2791         if (!dma_coherent2) {
2792                 pr_notice("DMA allocation failed...\n");
2793                 return false;
2794         }
2795         memset(dma_coherent2, 0, acb->roundup_ccbsize);
2796         acb->dma_coherent_handle2 = dma_coherent_handle2;
2797         acb->dma_coherent2 = dma_coherent2;
2798         reg = (struct MessageUnit_D *)dma_coherent2;
2799         acb->pmuD = reg;
2800         reg->chip_id = acb->mem_base0 + ARCMSR_ARC1214_CHIP_ID;
2801         reg->cpu_mem_config = acb->mem_base0 +
2802                 ARCMSR_ARC1214_CPU_MEMORY_CONFIGURATION;
2803         reg->i2o_host_interrupt_mask = acb->mem_base0 +
2804                 ARCMSR_ARC1214_I2_HOST_INTERRUPT_MASK;
2805         reg->sample_at_reset = acb->mem_base0 + ARCMSR_ARC1214_SAMPLE_RESET;
2806         reg->reset_request = acb->mem_base0 + ARCMSR_ARC1214_RESET_REQUEST;
2807         reg->host_int_status = acb->mem_base0 +
2808                 ARCMSR_ARC1214_MAIN_INTERRUPT_STATUS;
2809         reg->pcief0_int_enable = acb->mem_base0 +
2810                 ARCMSR_ARC1214_PCIE_F0_INTERRUPT_ENABLE;
2811         reg->inbound_msgaddr0 = acb->mem_base0 +
2812                 ARCMSR_ARC1214_INBOUND_MESSAGE0;
2813         reg->inbound_msgaddr1 = acb->mem_base0 +
2814                 ARCMSR_ARC1214_INBOUND_MESSAGE1;
2815         reg->outbound_msgaddr0 = acb->mem_base0 +
2816                 ARCMSR_ARC1214_OUTBOUND_MESSAGE0;
2817         reg->outbound_msgaddr1 = acb->mem_base0 +
2818                 ARCMSR_ARC1214_OUTBOUND_MESSAGE1;
2819         reg->inbound_doorbell = acb->mem_base0 +
2820                 ARCMSR_ARC1214_INBOUND_DOORBELL;
2821         reg->outbound_doorbell = acb->mem_base0 +
2822                 ARCMSR_ARC1214_OUTBOUND_DOORBELL;
2823         reg->outbound_doorbell_enable = acb->mem_base0 +
2824                 ARCMSR_ARC1214_OUTBOUND_DOORBELL_ENABLE;
2825         reg->inboundlist_base_low = acb->mem_base0 +
2826                 ARCMSR_ARC1214_INBOUND_LIST_BASE_LOW;
2827         reg->inboundlist_base_high = acb->mem_base0 +
2828                 ARCMSR_ARC1214_INBOUND_LIST_BASE_HIGH;
2829         reg->inboundlist_write_pointer = acb->mem_base0 +
2830                 ARCMSR_ARC1214_INBOUND_LIST_WRITE_POINTER;
2831         reg->outboundlist_base_low = acb->mem_base0 +
2832                 ARCMSR_ARC1214_OUTBOUND_LIST_BASE_LOW;
2833         reg->outboundlist_base_high = acb->mem_base0 +
2834                 ARCMSR_ARC1214_OUTBOUND_LIST_BASE_HIGH;
2835         reg->outboundlist_copy_pointer = acb->mem_base0 +
2836                 ARCMSR_ARC1214_OUTBOUND_LIST_COPY_POINTER;
2837         reg->outboundlist_read_pointer = acb->mem_base0 +
2838                 ARCMSR_ARC1214_OUTBOUND_LIST_READ_POINTER;
2839         reg->outboundlist_interrupt_cause = acb->mem_base0 +
2840                 ARCMSR_ARC1214_OUTBOUND_INTERRUPT_CAUSE;
2841         reg->outboundlist_interrupt_enable = acb->mem_base0 +
2842                 ARCMSR_ARC1214_OUTBOUND_INTERRUPT_ENABLE;
2843         reg->message_wbuffer = acb->mem_base0 + ARCMSR_ARC1214_MESSAGE_WBUFFER;
2844         reg->message_rbuffer = acb->mem_base0 + ARCMSR_ARC1214_MESSAGE_RBUFFER;
2845         reg->msgcode_rwbuffer = acb->mem_base0 +
2846                 ARCMSR_ARC1214_MESSAGE_RWBUFFER;
2847         iop_firm_model = (char __iomem *)(&reg->msgcode_rwbuffer[15]);
2848         iop_firm_version = (char __iomem *)(&reg->msgcode_rwbuffer[17]);
2849         iop_device_map = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
2850         if (readl(acb->pmuD->outbound_doorbell) &
2851                 ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE) {
2852                 writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE,
2853                         acb->pmuD->outbound_doorbell);/*clear interrupt*/
2854         }
2855         /* post "get config" instruction */
2856         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, reg->inbound_msgaddr0);
2857         /* wait message ready */
2858         if (!arcmsr_hbaD_wait_msgint_ready(acb)) {
2859                 pr_notice("arcmsr%d: wait get adapter firmware "
2860                         "miscellaneous data timeout\n", acb->host->host_no);
2861                 dma_free_coherent(&acb->pdev->dev, acb->roundup_ccbsize,
2862                         acb->dma_coherent2, acb->dma_coherent_handle2);
2863                 return false;
2864         }
2865         count = 8;
2866         while (count) {
2867                 *acb_firm_model = readb(iop_firm_model);
2868                 acb_firm_model++;
2869                 iop_firm_model++;
2870                 count--;
2871         }
2872         count = 16;
2873         while (count) {
2874                 *acb_firm_version = readb(iop_firm_version);
2875                 acb_firm_version++;
2876                 iop_firm_version++;
2877                 count--;
2878         }
2879         count = 16;
2880         while (count) {
2881                 *acb_device_map = readb(iop_device_map);
2882                 acb_device_map++;
2883                 iop_device_map++;
2884                 count--;
2885         }
2886         acb->signature = readl(&reg->msgcode_rwbuffer[0]);
2887         /*firm_signature,1,00-03*/
2888         acb->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);
2889         /*firm_request_len,1,04-07*/
2890         acb->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]);
2891         /*firm_numbers_queue,2,08-11*/
2892         acb->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);
2893         /*firm_sdram_size,3,12-15*/
2894         acb->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);
2895         /*firm_hd_channels,4,16-19*/
2896         acb->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);
2897         pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
2898                 acb->host->host_no,
2899                 acb->firm_model,
2900                 acb->firm_version);
2901         return true;
2902 }
2903
2904 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2905 {
2906         bool rtn = false;
2907
2908         switch (acb->adapter_type) {
2909         case ACB_ADAPTER_TYPE_A:
2910                 rtn = arcmsr_hbaA_get_config(acb);
2911                 break;
2912         case ACB_ADAPTER_TYPE_B:
2913                 rtn = arcmsr_hbaB_get_config(acb);
2914                 break;
2915         case ACB_ADAPTER_TYPE_C:
2916                 rtn = arcmsr_hbaC_get_config(acb);
2917                 break;
2918         case ACB_ADAPTER_TYPE_D:
2919                 rtn = arcmsr_hbaD_get_config(acb);
2920                 break;
2921         default:
2922                 break;
2923         }
2924         if (acb->firm_numbers_queue > ARCMSR_MAX_OUTSTANDING_CMD)
2925                 acb->maxOutstanding = ARCMSR_MAX_OUTSTANDING_CMD;
2926         else
2927                 acb->maxOutstanding = acb->firm_numbers_queue - 1;
2928         acb->host->can_queue = acb->maxOutstanding;
2929         return rtn;
2930 }
2931
2932 static int arcmsr_hbaA_polling_ccbdone(struct AdapterControlBlock *acb,
2933         struct CommandControlBlock *poll_ccb)
2934 {
2935         struct MessageUnit_A __iomem *reg = acb->pmuA;
2936         struct CommandControlBlock *ccb;
2937         struct ARCMSR_CDB *arcmsr_cdb;
2938         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2939         int rtn;
2940         bool error;
2941         polling_hba_ccb_retry:
2942         poll_count++;
2943         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2944         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2945         while (1) {
2946                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2947                         if (poll_ccb_done){
2948                                 rtn = SUCCESS;
2949                                 break;
2950                         }else {
2951                                 msleep(25);
2952                                 if (poll_count > 100){
2953                                         rtn = FAILED;
2954                                         break;
2955                                 }
2956                                 goto polling_hba_ccb_retry;
2957                         }
2958                 }
2959                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2960                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2961                 poll_ccb_done |= (ccb == poll_ccb) ? 1 : 0;
2962                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2963                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2964                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2965                                         " poll command abort successfully \n"
2966                                         , acb->host->host_no
2967                                         , ccb->pcmd->device->id
2968                                         , (u32)ccb->pcmd->device->lun
2969                                         , ccb);
2970                                 ccb->pcmd->result = DID_ABORT << 16;
2971                                 arcmsr_ccb_complete(ccb);
2972                                 continue;
2973                         }
2974                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2975                                 " command done ccb = '0x%p'"
2976                                 "ccboutstandingcount = %d \n"
2977                                 , acb->host->host_no
2978                                 , ccb
2979                                 , atomic_read(&acb->ccboutstandingcount));
2980                         continue;
2981                 }
2982                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2983                 arcmsr_report_ccb_state(acb, ccb, error);
2984         }
2985         return rtn;
2986 }
2987
2988 static int arcmsr_hbaB_polling_ccbdone(struct AdapterControlBlock *acb,
2989                                         struct CommandControlBlock *poll_ccb)
2990 {
2991         struct MessageUnit_B *reg = acb->pmuB;
2992         struct ARCMSR_CDB *arcmsr_cdb;
2993         struct CommandControlBlock *ccb;
2994         uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2995         int index, rtn;
2996         bool error;
2997         polling_hbb_ccb_retry:
2998
2999         poll_count++;
3000         /* clear doorbell interrupt */
3001         writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
3002         while(1){
3003                 index = reg->doneq_index;
3004                 flag_ccb = reg->done_qbuffer[index];
3005                 if (flag_ccb == 0) {
3006                         if (poll_ccb_done){
3007                                 rtn = SUCCESS;
3008                                 break;
3009                         }else {
3010                                 msleep(25);
3011                                 if (poll_count > 100){
3012                                         rtn = FAILED;
3013                                         break;
3014                                 }
3015                                 goto polling_hbb_ccb_retry;
3016                         }
3017                 }
3018                 reg->done_qbuffer[index] = 0;
3019                 index++;
3020                 /*if last index number set it to 0 */
3021                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
3022                 reg->doneq_index = index;
3023                 /* check if command done with no error*/
3024                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
3025                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
3026                 poll_ccb_done |= (ccb == poll_ccb) ? 1 : 0;
3027                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
3028                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
3029                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
3030                                         " poll command abort successfully \n"
3031                                         ,acb->host->host_no
3032                                         ,ccb->pcmd->device->id
3033                                         ,(u32)ccb->pcmd->device->lun
3034                                         ,ccb);
3035                                 ccb->pcmd->result = DID_ABORT << 16;
3036                                 arcmsr_ccb_complete(ccb);
3037                                 continue;
3038                         }
3039                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
3040                                 " command done ccb = '0x%p'"
3041                                 "ccboutstandingcount = %d \n"
3042                                 , acb->host->host_no
3043                                 , ccb
3044                                 , atomic_read(&acb->ccboutstandingcount));
3045                         continue;
3046                 }
3047                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
3048                 arcmsr_report_ccb_state(acb, ccb, error);
3049         }
3050         return rtn;
3051 }
3052
3053 static int arcmsr_hbaC_polling_ccbdone(struct AdapterControlBlock *acb,
3054                 struct CommandControlBlock *poll_ccb)
3055 {
3056         struct MessageUnit_C __iomem *reg = acb->pmuC;
3057         uint32_t flag_ccb, ccb_cdb_phy;
3058         struct ARCMSR_CDB *arcmsr_cdb;
3059         bool error;
3060         struct CommandControlBlock *pCCB;
3061         uint32_t poll_ccb_done = 0, poll_count = 0;
3062         int rtn;
3063 polling_hbc_ccb_retry:
3064         poll_count++;
3065         while (1) {
3066                 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
3067                         if (poll_ccb_done) {
3068                                 rtn = SUCCESS;
3069                                 break;
3070                         } else {
3071                                 msleep(25);
3072                                 if (poll_count > 100) {
3073                                         rtn = FAILED;
3074                                         break;
3075                                 }
3076                                 goto polling_hbc_ccb_retry;
3077                         }
3078                 }
3079                 flag_ccb = readl(&reg->outbound_queueport_low);
3080                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
3081                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
3082                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
3083                 poll_ccb_done |= (pCCB == poll_ccb) ? 1 : 0;
3084                 /* check ifcommand done with no error*/
3085                 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
3086                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
3087                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
3088                                         " poll command abort successfully \n"
3089                                         , acb->host->host_no
3090                                         , pCCB->pcmd->device->id
3091                                         , (u32)pCCB->pcmd->device->lun
3092                                         , pCCB);
3093                                         pCCB->pcmd->result = DID_ABORT << 16;
3094                                         arcmsr_ccb_complete(pCCB);
3095                                 continue;
3096                         }
3097                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
3098                                 " command done ccb = '0x%p'"
3099                                 "ccboutstandingcount = %d \n"
3100                                 , acb->host->host_no
3101                                 , pCCB
3102                                 , atomic_read(&acb->ccboutstandingcount));
3103                         continue;
3104                 }
3105                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
3106                 arcmsr_report_ccb_state(acb, pCCB, error);
3107         }
3108         return rtn;
3109 }
3110
3111 static int arcmsr_hbaD_polling_ccbdone(struct AdapterControlBlock *acb,
3112                                 struct CommandControlBlock *poll_ccb)
3113 {
3114         bool error;
3115         uint32_t poll_ccb_done = 0, poll_count = 0, flag_ccb, ccb_cdb_phy;
3116         int rtn, doneq_index, index_stripped, outbound_write_pointer, toggle;
3117         unsigned long flags;
3118         struct ARCMSR_CDB *arcmsr_cdb;
3119         struct CommandControlBlock *pCCB;
3120         struct MessageUnit_D *pmu = acb->pmuD;
3121
3122 polling_hbaD_ccb_retry:
3123         poll_count++;
3124         while (1) {
3125                 spin_lock_irqsave(&acb->doneq_lock, flags);
3126                 outbound_write_pointer = pmu->done_qbuffer[0].addressLow + 1;
3127                 doneq_index = pmu->doneq_index;
3128                 if ((outbound_write_pointer & 0xFFF) == (doneq_index & 0xFFF)) {
3129                         spin_unlock_irqrestore(&acb->doneq_lock, flags);
3130                         if (poll_ccb_done) {
3131                                 rtn = SUCCESS;
3132                                 break;
3133                         } else {
3134                                 msleep(25);
3135                                 if (poll_count > 40) {
3136                                         rtn = FAILED;
3137                                         break;
3138                                 }
3139                                 goto polling_hbaD_ccb_retry;
3140                         }
3141                 }
3142                 toggle = doneq_index & 0x4000;
3143                 index_stripped = (doneq_index & 0xFFF) + 1;
3144                 index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
3145                 pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
3146                                 ((toggle ^ 0x4000) + 1);
3147                 doneq_index = pmu->doneq_index;
3148                 spin_unlock_irqrestore(&acb->doneq_lock, flags);
3149                 flag_ccb = pmu->done_qbuffer[doneq_index & 0xFFF].addressLow;
3150                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
3151                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset +
3152                         ccb_cdb_phy);
3153                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock,
3154                         arcmsr_cdb);
3155                 poll_ccb_done |= (pCCB == poll_ccb) ? 1 : 0;
3156                 if ((pCCB->acb != acb) ||
3157                         (pCCB->startdone != ARCMSR_CCB_START)) {
3158                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
3159                                 pr_notice("arcmsr%d: scsi id = %d "
3160                                         "lun = %d ccb = '0x%p' poll command "
3161                                         "abort successfully\n"
3162                                         , acb->host->host_no
3163                                         , pCCB->pcmd->device->id
3164                                         , (u32)pCCB->pcmd->device->lun
3165                                         , pCCB);
3166                                 pCCB->pcmd->result = DID_ABORT << 16;
3167                                 arcmsr_ccb_complete(pCCB);
3168                                 continue;
3169                         }
3170                         pr_notice("arcmsr%d: polling an illegal "
3171                                 "ccb command done ccb = '0x%p' "
3172                                 "ccboutstandingcount = %d\n"
3173                                 , acb->host->host_no
3174                                 , pCCB
3175                                 , atomic_read(&acb->ccboutstandingcount));
3176                         continue;
3177                 }
3178                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
3179                         ? true : false;
3180                 arcmsr_report_ccb_state(acb, pCCB, error);
3181         }
3182         return rtn;
3183 }
3184
3185 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
3186                                         struct CommandControlBlock *poll_ccb)
3187 {
3188         int rtn = 0;
3189         switch (acb->adapter_type) {
3190
3191         case ACB_ADAPTER_TYPE_A: {
3192                 rtn = arcmsr_hbaA_polling_ccbdone(acb, poll_ccb);
3193                 }
3194                 break;
3195
3196         case ACB_ADAPTER_TYPE_B: {
3197                 rtn = arcmsr_hbaB_polling_ccbdone(acb, poll_ccb);
3198                 }
3199                 break;
3200         case ACB_ADAPTER_TYPE_C: {
3201                 rtn = arcmsr_hbaC_polling_ccbdone(acb, poll_ccb);
3202                 }
3203                 break;
3204         case ACB_ADAPTER_TYPE_D:
3205                 rtn = arcmsr_hbaD_polling_ccbdone(acb, poll_ccb);
3206                 break;
3207         }
3208         return rtn;
3209 }
3210
3211 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
3212 {
3213         uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
3214         dma_addr_t dma_coherent_handle;
3215
3216         /*
3217         ********************************************************************
3218         ** here we need to tell iop 331 our freeccb.HighPart
3219         ** if freeccb.HighPart is not zero
3220         ********************************************************************
3221         */
3222         switch (acb->adapter_type) {
3223         case ACB_ADAPTER_TYPE_B:
3224         case ACB_ADAPTER_TYPE_D:
3225                 dma_coherent_handle = acb->dma_coherent_handle2;
3226                 break;
3227         default:
3228                 dma_coherent_handle = acb->dma_coherent_handle;
3229                 break;
3230         }
3231         cdb_phyaddr = lower_32_bits(dma_coherent_handle);
3232         cdb_phyaddr_hi32 = upper_32_bits(dma_coherent_handle);
3233         acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
3234         /*
3235         ***********************************************************************
3236         **    if adapter type B, set window of "post command Q"
3237         ***********************************************************************
3238         */
3239         switch (acb->adapter_type) {
3240
3241         case ACB_ADAPTER_TYPE_A: {
3242                 if (cdb_phyaddr_hi32 != 0) {
3243                         struct MessageUnit_A __iomem *reg = acb->pmuA;
3244                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
3245                                                 &reg->message_rwbuffer[0]);
3246                         writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
3247                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
3248                                                         &reg->inbound_msgaddr0);
3249                         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
3250                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
3251                                 part physical address timeout\n",
3252                                 acb->host->host_no);
3253                                 return 1;
3254                         }
3255                 }
3256                 }
3257                 break;
3258
3259         case ACB_ADAPTER_TYPE_B: {
3260                 uint32_t __iomem *rwbuffer;
3261
3262                 struct MessageUnit_B *reg = acb->pmuB;
3263                 reg->postq_index = 0;
3264                 reg->doneq_index = 0;
3265                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
3266                 if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3267                         printk(KERN_NOTICE "arcmsr%d: cannot set driver mode\n", \
3268                                 acb->host->host_no);
3269                         return 1;
3270                 }
3271                 rwbuffer = reg->message_rwbuffer;
3272                 /* driver "set config" signature */
3273                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
3274                 /* normal should be zero */
3275                 writel(cdb_phyaddr_hi32, rwbuffer++);
3276                 /* postQ size (256 + 8)*4        */
3277                 writel(cdb_phyaddr, rwbuffer++);
3278                 /* doneQ size (256 + 8)*4        */
3279                 writel(cdb_phyaddr + 1056, rwbuffer++);
3280                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
3281                 writel(1056, rwbuffer);
3282
3283                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
3284                 if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3285                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
3286                         timeout \n",acb->host->host_no);
3287                         return 1;
3288                 }
3289                 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
3290                 if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3291                         pr_err("arcmsr%d: can't set driver mode.\n",
3292                                 acb->host->host_no);
3293                         return 1;
3294                 }
3295                 }
3296                 break;
3297         case ACB_ADAPTER_TYPE_C: {
3298                 if (cdb_phyaddr_hi32 != 0) {
3299                         struct MessageUnit_C __iomem *reg = acb->pmuC;
3300
3301                         printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
3302                                         acb->adapter_index, cdb_phyaddr_hi32);
3303                         writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
3304                         writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
3305                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
3306                         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
3307                         if (!arcmsr_hbaC_wait_msgint_ready(acb)) {
3308                                 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
3309                                 timeout \n", acb->host->host_no);
3310                                 return 1;
3311                         }
3312                 }
3313                 }
3314                 break;
3315         case ACB_ADAPTER_TYPE_D: {
3316                 uint32_t __iomem *rwbuffer;
3317                 struct MessageUnit_D *reg = acb->pmuD;
3318                 reg->postq_index = 0;
3319                 reg->doneq_index = 0;
3320                 rwbuffer = reg->msgcode_rwbuffer;
3321                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
3322                 writel(cdb_phyaddr_hi32, rwbuffer++);
3323                 writel(cdb_phyaddr, rwbuffer++);
3324                 writel(cdb_phyaddr + (ARCMSR_MAX_ARC1214_POSTQUEUE *
3325                         sizeof(struct InBound_SRB)), rwbuffer++);
3326                 writel(0x100, rwbuffer);
3327                 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, reg->inbound_msgaddr0);
3328                 if (!arcmsr_hbaD_wait_msgint_ready(acb)) {
3329                         pr_notice("arcmsr%d: 'set command Q window' timeout\n",
3330                                 acb->host->host_no);
3331                         return 1;
3332                 }
3333                 }
3334                 break;
3335         }
3336         return 0;
3337 }
3338
3339 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
3340 {
3341         uint32_t firmware_state = 0;
3342         switch (acb->adapter_type) {
3343
3344         case ACB_ADAPTER_TYPE_A: {
3345                 struct MessageUnit_A __iomem *reg = acb->pmuA;
3346                 do {
3347                         firmware_state = readl(&reg->outbound_msgaddr1);
3348                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
3349                 }
3350                 break;
3351
3352         case ACB_ADAPTER_TYPE_B: {
3353                 struct MessageUnit_B *reg = acb->pmuB;
3354                 do {
3355                         firmware_state = readl(reg->iop2drv_doorbell);
3356                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
3357                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
3358                 }
3359                 break;
3360         case ACB_ADAPTER_TYPE_C: {
3361                 struct MessageUnit_C __iomem *reg = acb->pmuC;
3362                 do {
3363                         firmware_state = readl(&reg->outbound_msgaddr1);
3364                 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
3365                 }
3366                 break;
3367         case ACB_ADAPTER_TYPE_D: {
3368                 struct MessageUnit_D *reg = acb->pmuD;
3369                 do {
3370                         firmware_state = readl(reg->outbound_msgaddr1);
3371                 } while ((firmware_state &
3372                         ARCMSR_ARC1214_MESSAGE_FIRMWARE_OK) == 0);
3373                 }
3374                 break;
3375         }
3376 }
3377
3378 static void arcmsr_hbaA_request_device_map(struct AdapterControlBlock *acb)
3379 {
3380         struct MessageUnit_A __iomem *reg = acb->pmuA;
3381         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
3382                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3383                 return;
3384         } else {
3385                 acb->fw_flag = FW_NORMAL;
3386                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
3387                         atomic_set(&acb->rq_map_token, 16);
3388                 }
3389                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
3390                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3391                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3392                         return;
3393                 }
3394                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
3395                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3396         }
3397         return;
3398 }
3399
3400 static void arcmsr_hbaB_request_device_map(struct AdapterControlBlock *acb)
3401 {
3402         struct MessageUnit_B *reg = acb->pmuB;
3403         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
3404                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3405                 return;
3406         } else {
3407                 acb->fw_flag = FW_NORMAL;
3408                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
3409                         atomic_set(&acb->rq_map_token, 16);
3410                 }
3411                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
3412                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3413                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3414                         return;
3415                 }
3416                 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
3417                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3418         }
3419         return;
3420 }
3421
3422 static void arcmsr_hbaC_request_device_map(struct AdapterControlBlock *acb)
3423 {
3424         struct MessageUnit_C __iomem *reg = acb->pmuC;
3425         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
3426                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3427                 return;
3428         } else {
3429                 acb->fw_flag = FW_NORMAL;
3430                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
3431                         atomic_set(&acb->rq_map_token, 16);
3432                 }
3433                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
3434                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3435                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3436                         return;
3437                 }
3438                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
3439                 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
3440                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3441         }
3442         return;
3443 }
3444
3445 static void arcmsr_hbaD_request_device_map(struct AdapterControlBlock *acb)
3446 {
3447         struct MessageUnit_D *reg = acb->pmuD;
3448
3449         if (unlikely(atomic_read(&acb->rq_map_token) == 0) ||
3450                 ((acb->acb_flags & ACB_F_BUS_RESET) != 0) ||
3451                 ((acb->acb_flags & ACB_F_ABORT) != 0)) {
3452                 mod_timer(&acb->eternal_timer,
3453                         jiffies + msecs_to_jiffies(6 * HZ));
3454         } else {
3455                 acb->fw_flag = FW_NORMAL;
3456                 if (atomic_read(&acb->ante_token_value) ==
3457                         atomic_read(&acb->rq_map_token)) {
3458                         atomic_set(&acb->rq_map_token, 16);
3459                 }
3460                 atomic_set(&acb->ante_token_value,
3461                         atomic_read(&acb->rq_map_token));
3462                 if (atomic_dec_and_test(&acb->rq_map_token)) {
3463                         mod_timer(&acb->eternal_timer, jiffies +
3464                                 msecs_to_jiffies(6 * HZ));
3465                         return;
3466                 }
3467                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG,
3468                         reg->inbound_msgaddr0);
3469                 mod_timer(&acb->eternal_timer, jiffies +
3470                         msecs_to_jiffies(6 * HZ));
3471         }
3472 }
3473
3474 static void arcmsr_request_device_map(unsigned long pacb)
3475 {
3476         struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
3477         switch (acb->adapter_type) {
3478                 case ACB_ADAPTER_TYPE_A: {
3479                         arcmsr_hbaA_request_device_map(acb);
3480                 }
3481                 break;
3482                 case ACB_ADAPTER_TYPE_B: {
3483                         arcmsr_hbaB_request_device_map(acb);
3484                 }
3485                 break;
3486                 case ACB_ADAPTER_TYPE_C: {
3487                         arcmsr_hbaC_request_device_map(acb);
3488                 }
3489                 break;
3490                 case ACB_ADAPTER_TYPE_D:
3491                         arcmsr_hbaD_request_device_map(acb);
3492                 break;
3493         }
3494 }
3495
3496 static void arcmsr_hbaA_start_bgrb(struct AdapterControlBlock *acb)
3497 {
3498         struct MessageUnit_A __iomem *reg = acb->pmuA;
3499         acb->acb_flags |= ACB_F_MSG_START_BGRB;
3500         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
3501         if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
3502                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
3503                                 rebulid' timeout \n", acb->host->host_no);
3504         }
3505 }
3506
3507 static void arcmsr_hbaB_start_bgrb(struct AdapterControlBlock *acb)
3508 {
3509         struct MessageUnit_B *reg = acb->pmuB;
3510         acb->acb_flags |= ACB_F_MSG_START_BGRB;
3511         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
3512         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3513                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
3514                                 rebulid' timeout \n",acb->host->host_no);
3515         }
3516 }
3517
3518 static void arcmsr_hbaC_start_bgrb(struct AdapterControlBlock *pACB)
3519 {
3520         struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
3521         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
3522         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
3523         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
3524         if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
3525                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
3526                                 rebulid' timeout \n", pACB->host->host_no);
3527         }
3528         return;
3529 }
3530
3531 static void arcmsr_hbaD_start_bgrb(struct AdapterControlBlock *pACB)
3532 {
3533         struct MessageUnit_D *pmu = pACB->pmuD;
3534
3535         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
3536         writel(ARCMSR_INBOUND_MESG0_START_BGRB, pmu->inbound_msgaddr0);
3537         if (!arcmsr_hbaD_wait_msgint_ready(pACB)) {
3538                 pr_notice("arcmsr%d: wait 'start adapter "
3539                         "background rebulid' timeout\n", pACB->host->host_no);
3540         }
3541 }
3542
3543 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
3544 {
3545         switch (acb->adapter_type) {
3546         case ACB_ADAPTER_TYPE_A:
3547                 arcmsr_hbaA_start_bgrb(acb);
3548                 break;
3549         case ACB_ADAPTER_TYPE_B:
3550                 arcmsr_hbaB_start_bgrb(acb);
3551                 break;
3552         case ACB_ADAPTER_TYPE_C:
3553                 arcmsr_hbaC_start_bgrb(acb);
3554                 break;
3555         case ACB_ADAPTER_TYPE_D:
3556                 arcmsr_hbaD_start_bgrb(acb);
3557                 break;
3558         }
3559 }
3560
3561 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
3562 {
3563         switch (acb->adapter_type) {
3564         case ACB_ADAPTER_TYPE_A: {
3565                 struct MessageUnit_A __iomem *reg = acb->pmuA;
3566                 uint32_t outbound_doorbell;
3567                 /* empty doorbell Qbuffer if door bell ringed */
3568                 outbound_doorbell = readl(&reg->outbound_doorbell);
3569                 /*clear doorbell interrupt */
3570                 writel(outbound_doorbell, &reg->outbound_doorbell);
3571                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
3572                 }
3573                 break;
3574
3575         case ACB_ADAPTER_TYPE_B: {
3576                 struct MessageUnit_B *reg = acb->pmuB;
3577                 /*clear interrupt and message state*/
3578                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
3579                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
3580                 /* let IOP know data has been read */
3581                 }
3582                 break;
3583         case ACB_ADAPTER_TYPE_C: {
3584                 struct MessageUnit_C __iomem *reg = acb->pmuC;
3585                 uint32_t outbound_doorbell, i;
3586                 /* empty doorbell Qbuffer if door bell ringed */
3587                 outbound_doorbell = readl(&reg->outbound_doorbell);
3588                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
3589                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3590                 for (i = 0; i < 200; i++) {
3591                         msleep(20);
3592                         outbound_doorbell = readl(&reg->outbound_doorbell);
3593                         if (outbound_doorbell &
3594                                 ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
3595                                 writel(outbound_doorbell,
3596                                         &reg->outbound_doorbell_clear);
3597                                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK,
3598                                         &reg->inbound_doorbell);
3599                         } else
3600                                 break;
3601                 }
3602                 }
3603                 break;
3604         case ACB_ADAPTER_TYPE_D: {
3605                 struct MessageUnit_D *reg = acb->pmuD;
3606                 uint32_t outbound_doorbell, i;
3607                 /* empty doorbell Qbuffer if door bell ringed */
3608                 outbound_doorbell = readl(reg->outbound_doorbell);
3609                 writel(outbound_doorbell, reg->outbound_doorbell);
3610                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
3611                         reg->inbound_doorbell);
3612                 for (i = 0; i < 200; i++) {
3613                         msleep(20);
3614                         outbound_doorbell = readl(reg->outbound_doorbell);
3615                         if (outbound_doorbell &
3616                                 ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK) {
3617                                 writel(outbound_doorbell,
3618                                         reg->outbound_doorbell);
3619                                 writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
3620                                         reg->inbound_doorbell);
3621                         } else
3622                                 break;
3623                 }
3624                 }
3625                 break;
3626         }
3627 }
3628
3629 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
3630 {
3631         switch (acb->adapter_type) {
3632         case ACB_ADAPTER_TYPE_A:
3633                 return;
3634         case ACB_ADAPTER_TYPE_B:
3635                 {
3636                         struct MessageUnit_B *reg = acb->pmuB;
3637                         writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
3638                         if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
3639                                 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
3640                                 return;
3641                         }
3642                 }
3643                 break;
3644         case ACB_ADAPTER_TYPE_C:
3645                 return;
3646         }
3647         return;
3648 }
3649
3650 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
3651 {
3652         uint8_t value[64];
3653         int i, count = 0;
3654         struct MessageUnit_A __iomem *pmuA = acb->pmuA;
3655         struct MessageUnit_C __iomem *pmuC = acb->pmuC;
3656         struct MessageUnit_D *pmuD = acb->pmuD;
3657
3658         /* backup pci config data */
3659         printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
3660         for (i = 0; i < 64; i++) {
3661                 pci_read_config_byte(acb->pdev, i, &value[i]);
3662         }
3663         /* hardware reset signal */
3664         if ((acb->dev_id == 0x1680)) {
3665                 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
3666         } else if ((acb->dev_id == 0x1880)) {
3667                 do {
3668                         count++;
3669                         writel(0xF, &pmuC->write_sequence);
3670                         writel(0x4, &pmuC->write_sequence);
3671                         writel(0xB, &pmuC->write_sequence);
3672                         writel(0x2, &pmuC->write_sequence);
3673                         writel(0x7, &pmuC->write_sequence);
3674                         writel(0xD, &pmuC->write_sequence);
3675                 } while (((readl(&pmuC->host_diagnostic) & ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
3676                 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
3677         } else if ((acb->dev_id == 0x1214)) {
3678                 writel(0x20, pmuD->reset_request);
3679         } else {
3680                 pci_write_config_byte(acb->pdev, 0x84, 0x20);
3681         }
3682         msleep(2000);
3683         /* write back pci config data */
3684         for (i = 0; i < 64; i++) {
3685                 pci_write_config_byte(acb->pdev, i, value[i]);
3686         }
3687         msleep(1000);
3688         return;
3689 }
3690 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
3691 {
3692         uint32_t intmask_org;
3693         /* disable all outbound interrupt */
3694         intmask_org = arcmsr_disable_outbound_ints(acb);
3695         arcmsr_wait_firmware_ready(acb);
3696         arcmsr_iop_confirm(acb);
3697         /*start background rebuild*/
3698         arcmsr_start_adapter_bgrb(acb);
3699         /* empty doorbell Qbuffer if door bell ringed */
3700         arcmsr_clear_doorbell_queue_buffer(acb);
3701         arcmsr_enable_eoi_mode(acb);
3702         /* enable outbound Post Queue,outbound doorbell Interrupt */
3703         arcmsr_enable_outbound_ints(acb, intmask_org);
3704         acb->acb_flags |= ACB_F_IOP_INITED;
3705 }
3706
3707 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
3708 {
3709         struct CommandControlBlock *ccb;
3710         uint32_t intmask_org;
3711         uint8_t rtnval = 0x00;
3712         int i = 0;
3713         unsigned long flags;
3714
3715         if (atomic_read(&acb->ccboutstandingcount) != 0) {
3716                 /* disable all outbound interrupt */
3717                 intmask_org = arcmsr_disable_outbound_ints(acb);
3718                 /* talk to iop 331 outstanding command aborted */
3719                 rtnval = arcmsr_abort_allcmd(acb);
3720                 /* clear all outbound posted Q */
3721                 arcmsr_done4abort_postqueue(acb);
3722                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3723                         ccb = acb->pccb_pool[i];
3724                         if (ccb->startdone == ARCMSR_CCB_START) {
3725                                 scsi_dma_unmap(ccb->pcmd);
3726                                 ccb->startdone = ARCMSR_CCB_DONE;
3727                                 ccb->ccb_flags = 0;
3728                                 spin_lock_irqsave(&acb->ccblist_lock, flags);
3729                                 list_add_tail(&ccb->list, &acb->ccb_free_list);
3730                                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
3731                         }
3732                 }
3733                 atomic_set(&acb->ccboutstandingcount, 0);
3734                 /* enable all outbound interrupt */
3735                 arcmsr_enable_outbound_ints(acb, intmask_org);
3736                 return rtnval;
3737         }
3738         return rtnval;
3739 }
3740
3741 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
3742 {
3743         struct AdapterControlBlock *acb;
3744         uint32_t intmask_org, outbound_doorbell;
3745         int retry_count = 0;
3746         int rtn = FAILED;
3747         acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
3748         printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
3749         acb->num_resets++;
3750
3751         switch(acb->adapter_type){
3752                 case ACB_ADAPTER_TYPE_A:{
3753                         if (acb->acb_flags & ACB_F_BUS_RESET){
3754                                 long timeout;
3755                                 printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
3756                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3757                                 if (timeout) {
3758                                         return SUCCESS;
3759                                 }
3760                         }
3761                         acb->acb_flags |= ACB_F_BUS_RESET;
3762                         if (!arcmsr_iop_reset(acb)) {
3763                                 struct MessageUnit_A __iomem *reg;
3764                                 reg = acb->pmuA;
3765                                 arcmsr_hardware_reset(acb);
3766                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3767 sleep_again:
3768                                 ssleep(ARCMSR_SLEEPTIME);
3769                                 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
3770                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3771                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3772                                                 acb->fw_flag = FW_DEADLOCK;
3773                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3774                                                 return FAILED;
3775                                         }
3776                                         retry_count++;
3777                                         goto sleep_again;
3778                                 }
3779                                 acb->acb_flags |= ACB_F_IOP_INITED;
3780                                 /* disable all outbound interrupt */
3781                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3782                                 arcmsr_get_firmware_spec(acb);
3783                                 arcmsr_start_adapter_bgrb(acb);
3784                                 /* clear Qbuffer if door bell ringed */
3785                                 outbound_doorbell = readl(&reg->outbound_doorbell);
3786                                 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
3787                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
3788                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3789                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3790                                 atomic_set(&acb->rq_map_token, 16);
3791                                 atomic_set(&acb->ante_token_value, 16);
3792                                 acb->fw_flag = FW_NORMAL;
3793                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3794                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3795                                 rtn = SUCCESS;
3796                                 printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
3797                         } else {
3798                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3799                                 atomic_set(&acb->rq_map_token, 16);
3800                                 atomic_set(&acb->ante_token_value, 16);
3801                                 acb->fw_flag = FW_NORMAL;
3802                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3803                                 rtn = SUCCESS;
3804                         }
3805                         break;
3806                 }
3807                 case ACB_ADAPTER_TYPE_B:{
3808                         acb->acb_flags |= ACB_F_BUS_RESET;
3809                         if (!arcmsr_iop_reset(acb)) {
3810                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3811                                 rtn = FAILED;
3812                         } else {
3813                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3814                                 atomic_set(&acb->rq_map_token, 16);
3815                                 atomic_set(&acb->ante_token_value, 16);
3816                                 acb->fw_flag = FW_NORMAL;
3817                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3818                                 rtn = SUCCESS;
3819                         }
3820                         break;
3821                 }
3822                 case ACB_ADAPTER_TYPE_C:{
3823                         if (acb->acb_flags & ACB_F_BUS_RESET) {
3824                                 long timeout;
3825                                 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
3826                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3827                                 if (timeout) {
3828                                         return SUCCESS;
3829                                 }
3830                         }
3831                         acb->acb_flags |= ACB_F_BUS_RESET;
3832                         if (!arcmsr_iop_reset(acb)) {
3833                                 struct MessageUnit_C __iomem *reg;
3834                                 reg = acb->pmuC;
3835                                 arcmsr_hardware_reset(acb);
3836                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3837 sleep:
3838                                 ssleep(ARCMSR_SLEEPTIME);
3839                                 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3840                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3841                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3842                                                 acb->fw_flag = FW_DEADLOCK;
3843                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3844                                                 return FAILED;
3845                                         }
3846                                         retry_count++;
3847                                         goto sleep;
3848                                 }
3849                                 acb->acb_flags |= ACB_F_IOP_INITED;
3850                                 /* disable all outbound interrupt */
3851                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3852                                 arcmsr_get_firmware_spec(acb);
3853                                 arcmsr_start_adapter_bgrb(acb);
3854                                 /* clear Qbuffer if door bell ringed */
3855                                 arcmsr_clear_doorbell_queue_buffer(acb);
3856                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3857                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3858                                 atomic_set(&acb->rq_map_token, 16);
3859                                 atomic_set(&acb->ante_token_value, 16);
3860                                 acb->fw_flag = FW_NORMAL;
3861                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3862                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3863                                 rtn = SUCCESS;
3864                                 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3865                         } else {
3866                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3867                                 atomic_set(&acb->rq_map_token, 16);
3868                                 atomic_set(&acb->ante_token_value, 16);
3869                                 acb->fw_flag = FW_NORMAL;
3870                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3871                                 rtn = SUCCESS;
3872                         }
3873                         break;
3874                 }
3875                 case ACB_ADAPTER_TYPE_D: {
3876                         if (acb->acb_flags & ACB_F_BUS_RESET) {
3877                                 long timeout;
3878                                 pr_notice("arcmsr: there is an bus reset"
3879                                         " eh proceeding.......\n");
3880                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags
3881                                         & ACB_F_BUS_RESET) == 0, 220 * HZ);
3882                                 if (timeout)
3883                                         return SUCCESS;
3884                         }
3885                         acb->acb_flags |= ACB_F_BUS_RESET;
3886                         if (!arcmsr_iop_reset(acb)) {
3887                                 struct MessageUnit_D *reg;
3888                                 reg = acb->pmuD;
3889                                 arcmsr_hardware_reset(acb);
3890                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3891                         nap:
3892                                 ssleep(ARCMSR_SLEEPTIME);
3893                                 if ((readl(reg->sample_at_reset) & 0x80) != 0) {
3894                                         pr_err("arcmsr%d: waiting for "
3895                                                 "hw bus reset return, retry=%d\n",
3896                                                 acb->host->host_no, retry_count);
3897                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3898                                                 acb->fw_flag = FW_DEADLOCK;
3899                                                 pr_err("arcmsr%d: waiting for hw bus"
3900                                                         " reset return, "
3901                                                         "RETRY TERMINATED!!\n",
3902                                                         acb->host->host_no);
3903                                                 return FAILED;
3904                                         }
3905                                         retry_count++;
3906                                         goto nap;
3907                                 }
3908                                 acb->acb_flags |= ACB_F_IOP_INITED;
3909                                 /* disable all outbound interrupt */
3910                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3911                                 arcmsr_get_firmware_spec(acb);
3912                                 arcmsr_start_adapter_bgrb(acb);
3913                                 arcmsr_clear_doorbell_queue_buffer(acb);
3914                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3915                                 atomic_set(&acb->rq_map_token, 16);
3916                                 atomic_set(&acb->ante_token_value, 16);
3917                                 acb->fw_flag = FW_NORMAL;
3918                                 mod_timer(&acb->eternal_timer,
3919                                         jiffies + msecs_to_jiffies(6 * HZ));
3920                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3921                                 rtn = SUCCESS;
3922                                 pr_err("arcmsr: scsi bus reset "
3923                                         "eh returns with success\n");
3924                         } else {
3925                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3926                                 atomic_set(&acb->rq_map_token, 16);
3927                                 atomic_set(&acb->ante_token_value, 16);
3928                                 acb->fw_flag = FW_NORMAL;
3929                                 mod_timer(&acb->eternal_timer,
3930                                         jiffies + msecs_to_jiffies(6 * HZ));
3931                                 rtn = SUCCESS;
3932                         }
3933                         break;
3934                 }
3935         }
3936         return rtn;
3937 }
3938
3939 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3940                 struct CommandControlBlock *ccb)
3941 {
3942         int rtn;
3943         rtn = arcmsr_polling_ccbdone(acb, ccb);
3944         return rtn;
3945 }
3946
3947 static int arcmsr_abort(struct scsi_cmnd *cmd)
3948 {
3949         struct AdapterControlBlock *acb =
3950                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3951         int i = 0;
3952         int rtn = FAILED;
3953         uint32_t intmask_org;
3954
3955         printk(KERN_NOTICE
3956                 "arcmsr%d: abort device command of scsi id = %d lun = %d\n",
3957                 acb->host->host_no, cmd->device->id, (u32)cmd->device->lun);
3958         acb->acb_flags |= ACB_F_ABORT;
3959         acb->num_aborts++;
3960         /*
3961         ************************************************
3962         ** the all interrupt service routine is locked
3963         ** we need to handle it as soon as possible and exit
3964         ************************************************
3965         */
3966         if (!atomic_read(&acb->ccboutstandingcount)) {
3967                 acb->acb_flags &= ~ACB_F_ABORT;
3968                 return rtn;
3969         }
3970
3971         intmask_org = arcmsr_disable_outbound_ints(acb);
3972         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3973                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3974                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3975                         ccb->startdone = ARCMSR_CCB_ABORTED;
3976                         rtn = arcmsr_abort_one_cmd(acb, ccb);
3977                         break;
3978                 }
3979         }
3980         acb->acb_flags &= ~ACB_F_ABORT;
3981         arcmsr_enable_outbound_ints(acb, intmask_org);
3982         return rtn;
3983 }
3984
3985 static const char *arcmsr_info(struct Scsi_Host *host)
3986 {
3987         struct AdapterControlBlock *acb =
3988                 (struct AdapterControlBlock *) host->hostdata;
3989         static char buf[256];
3990         char *type;
3991         int raid6 = 1;
3992         switch (acb->pdev->device) {
3993         case PCI_DEVICE_ID_ARECA_1110:
3994         case PCI_DEVICE_ID_ARECA_1200:
3995         case PCI_DEVICE_ID_ARECA_1202:
3996         case PCI_DEVICE_ID_ARECA_1210:
3997                 raid6 = 0;
3998                 /*FALLTHRU*/
3999         case PCI_DEVICE_ID_ARECA_1120:
4000         case PCI_DEVICE_ID_ARECA_1130:
4001         case PCI_DEVICE_ID_ARECA_1160:
4002         case PCI_DEVICE_ID_ARECA_1170:
4003         case PCI_DEVICE_ID_ARECA_1201:
4004         case PCI_DEVICE_ID_ARECA_1220:
4005         case PCI_DEVICE_ID_ARECA_1230:
4006         case PCI_DEVICE_ID_ARECA_1260:
4007         case PCI_DEVICE_ID_ARECA_1270:
4008         case PCI_DEVICE_ID_ARECA_1280:
4009                 type = "SATA";
4010                 break;
4011         case PCI_DEVICE_ID_ARECA_1214:
4012         case PCI_DEVICE_ID_ARECA_1380:
4013         case PCI_DEVICE_ID_ARECA_1381:
4014         case PCI_DEVICE_ID_ARECA_1680:
4015         case PCI_DEVICE_ID_ARECA_1681:
4016         case PCI_DEVICE_ID_ARECA_1880:
4017                 type = "SAS/SATA";
4018                 break;
4019         default:
4020                 type = "unknown";
4021                 raid6 = 0;
4022                 break;
4023         }
4024         sprintf(buf, "Areca %s RAID Controller %s\narcmsr version %s\n",
4025                 type, raid6 ? "(RAID6 capable)" : "", ARCMSR_DRIVER_VERSION);
4026         return buf;
4027 }