git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/arcmsr/arcmsr_hba.c

   1 /*
   2 *******************************************************************************
   3 **        O.S   : Linux
   4 **   FILE NAME  : arcmsr_hba.c
   5 **        BY    : Erich Chen
   6 **   Description: SCSI RAID Device Driver for
   7 **                ARECA RAID Host adapter
   8 *******************************************************************************
   9 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
  10 **
  11 **     Web site: www.areca.com.tw
  12 **       E-mail: support@areca.com.tw
  13 **
  14 ** This program is free software; you can redistribute it and/or modify
  15 ** it under the terms of the GNU General Public License version 2 as
  16 ** published by the Free Software Foundation.
  17 ** This program is distributed in the hope that it will be useful,
  18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ** GNU General Public License for more details.
  21 *******************************************************************************
  22 ** Redistribution and use in source and binary forms, with or without
  23 ** modification, are permitted provided that the following conditions
  24 ** are met:
  25 ** 1. Redistributions of source code must retain the above copyright
  26 **    notice, this list of conditions and the following disclaimer.
  27 ** 2. Redistributions in binary form must reproduce the above copyright
  28 **    notice, this list of conditions and the following disclaimer in the
  29 **    documentation and/or other materials provided with the distribution.
  30 ** 3. The name of the author may not be used to endorse or promote products
  31 **    derived from this software without specific prior written permission.
  32 **
  33 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  34 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  35 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  36 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  37 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
  38 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  39 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
  40 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  41 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
  42 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  43 *******************************************************************************
  44 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
  45 **     Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
  46 *******************************************************************************
  47 */
  48 #include <linux/module.h>
  49 #include <linux/reboot.h>
  50 #include <linux/spinlock.h>
  51 #include <linux/pci_ids.h>
  52 #include <linux/interrupt.h>
  53 #include <linux/moduleparam.h>
  54 #include <linux/errno.h>
  55 #include <linux/types.h>
  56 #include <linux/delay.h>
  57 #include <linux/dma-mapping.h>
  58 #include <linux/timer.h>
  59 #include <linux/pci.h>
  60 #include <linux/aer.h>
  61 #include <asm/dma.h>
  62 #include <asm/io.h>
  63 #include <asm/system.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
  74 MODULE_AUTHOR("Erich Chen <support@areca.com.tw>");
  75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter");
  76 MODULE_LICENSE("Dual BSD/GPL");
  77 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
  78
  79 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
  80                                         struct scsi_cmnd *cmd);
  81 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
  82 static int arcmsr_abort(struct scsi_cmnd *);
  83 static int arcmsr_bus_reset(struct scsi_cmnd *);
  84 static int arcmsr_bios_param(struct scsi_device *sdev,
  85                 struct block_device *bdev, sector_t capacity, int *info);
  86 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
  87                                         void (*done) (struct scsi_cmnd *));
  88 static int arcmsr_probe(struct pci_dev *pdev,
  89                                 const struct pci_device_id *id);
  90 static void arcmsr_remove(struct pci_dev *pdev);
  91 static void arcmsr_shutdown(struct pci_dev *pdev);
  92 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  93 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  94 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
  95 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
  96 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
  97 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
  98 static const char *arcmsr_info(struct Scsi_Host *);
  99 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 100 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
 101                                                                 int queue_depth)
 102 {
 103         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 104                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 105         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 106         return queue_depth;
 107 }
 108
 109 static struct scsi_host_template arcmsr_scsi_host_template = {
 110         .module                 = THIS_MODULE,
 111         .name                   = "ARCMSR ARECA SATA/SAS RAID HOST Adapter"
 112                                                         ARCMSR_DRIVER_VERSION,
 113         .info                   = arcmsr_info,
 114         .queuecommand           = arcmsr_queue_command,
 115         .eh_abort_handler       = arcmsr_abort,
 116         .eh_bus_reset_handler   = arcmsr_bus_reset,
 117         .bios_param             = arcmsr_bios_param,
 118         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 119         .can_queue              = ARCMSR_MAX_OUTSTANDING_CMD,
 120         .this_id                = ARCMSR_SCSI_INITIATOR_ID,
 121         .sg_tablesize           = ARCMSR_MAX_SG_ENTRIES,
 122         .max_sectors            = ARCMSR_MAX_XFER_SECTORS,
 123         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 124         .use_clustering         = ENABLE_CLUSTERING,
 125         .shost_attrs            = arcmsr_host_attrs,
 126 };
 127 #ifdef CONFIG_SCSI_ARCMSR_AER
 128 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev);
 129 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
 130                                                 pci_channel_state_t state);
 131
 132 static struct pci_error_handlers arcmsr_pci_error_handlers = {
 133         .error_detected         = arcmsr_pci_error_detected,
 134         .slot_reset             = arcmsr_pci_slot_reset,
 135 };
 136 #endif
 137 static struct pci_device_id arcmsr_device_id_table[] = {
 138         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 139         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 140         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 141         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 142         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
 143         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
 144         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
 145         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
 146         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 147         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 148         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
 149         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
 150         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
 151         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
 152         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
 153         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
 154         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
 155         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
 156         {0, 0}, /* Terminating entry */
 157 };
 158 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 159 static struct pci_driver arcmsr_pci_driver = {
 160         .name                   = "arcmsr",
 161         .id_table               = arcmsr_device_id_table,
 162         .probe                  = arcmsr_probe,
 163         .remove                 = arcmsr_remove,
 164         .shutdown               = arcmsr_shutdown,
 165         #ifdef CONFIG_SCSI_ARCMSR_AER
 166         .err_handler            = &arcmsr_pci_error_handlers,
 167         #endif
 168 };
 169
 170 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 171 {
 172         irqreturn_t handle_state;
 173         struct AdapterControlBlock *acb = dev_id;
 174
 175         spin_lock(acb->host->host_lock);
 176         handle_state = arcmsr_interrupt(acb);
 177         spin_unlock(acb->host->host_lock);
 178
 179         return handle_state;
 180 }
 181
 182 static int arcmsr_bios_param(struct scsi_device *sdev,
 183                 struct block_device *bdev, sector_t capacity, int *geom)
 184 {
 185         int ret, heads, sectors, cylinders, total_capacity;
 186         unsigned char *buffer;/* return copy of block device's partition table */
 187
 188         buffer = scsi_bios_ptable(bdev);
 189         if (buffer) {
 190                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 191                 kfree(buffer);
 192                 if (ret != -1)
 193                         return ret;
 194         }
 195         total_capacity = capacity;
 196         heads = 64;
 197         sectors = 32;
 198         cylinders = total_capacity / (heads * sectors);
 199         if (cylinders > 1024) {
 200                 heads = 255;
 201                 sectors = 63;
 202                 cylinders = total_capacity / (heads * sectors);
 203         }
 204         geom[0] = heads;
 205         geom[1] = sectors;
 206         geom[2] = cylinders;
 207         return 0;
 208 }
 209
 210 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 211 {
 212         struct pci_dev *pdev = acb->pdev;
 213         u16 dev_id;
 214         pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 215         switch (dev_id) {
 216         case 0x1201 : {
 217                 acb->adapter_type = ACB_ADAPTER_TYPE_B;
 218                 }
 219                 break;
 220
 221         default : acb->adapter_type = ACB_ADAPTER_TYPE_A;
 222         }
 223 }
 224
 225 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 226 {
 227
 228         switch (acb->adapter_type) {
 229
 230         case ACB_ADAPTER_TYPE_A: {
 231                 struct pci_dev *pdev = acb->pdev;
 232                 void *dma_coherent;
 233                 dma_addr_t dma_coherent_handle, dma_addr;
 234                 struct CommandControlBlock *ccb_tmp;
 235                 uint32_t intmask_org;
 236                 int i, j;
 237
 238                 acb->pmuA = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 239                 if (!acb->pmuA) {
 240                         printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n",
 241                                                         acb->host->host_no);
 242                         return -ENOMEM;
 243                 }
 244
 245                 dma_coherent = dma_alloc_coherent(&pdev->dev,
 246                         ARCMSR_MAX_FREECCB_NUM *
 247                         sizeof (struct CommandControlBlock) + 0x20,
 248                         &dma_coherent_handle, GFP_KERNEL);
 249
 250                 if (!dma_coherent) {
 251                         iounmap(acb->pmuA);
 252                         return -ENOMEM;
 253                 }
 254
 255                 acb->dma_coherent = dma_coherent;
 256                 acb->dma_coherent_handle = dma_coherent_handle;
 257
 258                 if (((unsigned long)dma_coherent & 0x1F)) {
 259                         dma_coherent = dma_coherent +
 260                                 (0x20 - ((unsigned long)dma_coherent & 0x1F));
 261                         dma_coherent_handle = dma_coherent_handle +
 262                                 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
 263                 }
 264
 265                 dma_addr = dma_coherent_handle;
 266                 ccb_tmp = (struct CommandControlBlock *)dma_coherent;
 267                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
 268                         ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
 269                         ccb_tmp->acb = acb;
 270                         acb->pccb_pool[i] = ccb_tmp;
 271                         list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 272                         dma_addr = dma_addr + sizeof(struct CommandControlBlock);
 273                         ccb_tmp++;
 274                 }
 275
 276                 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
 277                 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 278                         for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 279                                 acb->devstate[i][j] = ARECA_RAID_GONE;
 280
 281                 /*
 282                 ** here we need to tell iop 331 our ccb_tmp.HighPart
 283                 ** if ccb_tmp.HighPart is not zero
 284                 */
 285                 intmask_org = arcmsr_disable_outbound_ints(acb);
 286                 }
 287                 break;
 288
 289         case ACB_ADAPTER_TYPE_B: {
 290
 291                 struct pci_dev *pdev = acb->pdev;
 292                 struct MessageUnit_B *reg;
 293                 void __iomem *mem_base0, *mem_base1;
 294                 void *dma_coherent;
 295                 dma_addr_t dma_coherent_handle, dma_addr;
 296                 uint32_t intmask_org;
 297                 struct CommandControlBlock *ccb_tmp;
 298                 int i, j;
 299
 300                 dma_coherent = dma_alloc_coherent(&pdev->dev,
 301                         ((ARCMSR_MAX_FREECCB_NUM *
 302                         sizeof(struct CommandControlBlock) + 0x20) +
 303                         sizeof(struct MessageUnit_B)),
 304                         &dma_coherent_handle, GFP_KERNEL);
 305                 if (!dma_coherent)
 306                         return -ENOMEM;
 307
 308                 acb->dma_coherent = dma_coherent;
 309                 acb->dma_coherent_handle = dma_coherent_handle;
 310
 311                 if (((unsigned long)dma_coherent & 0x1F)) {
 312                         dma_coherent = dma_coherent +
 313                                 (0x20 - ((unsigned long)dma_coherent & 0x1F));
 314                         dma_coherent_handle = dma_coherent_handle +
 315                                 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
 316                 }
 317
 318                 reg = (struct MessageUnit_B *)(dma_coherent +
 319                 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
 320
 321                 dma_addr = dma_coherent_handle;
 322                 ccb_tmp = (struct CommandControlBlock *)dma_coherent;
 323                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
 324                         ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
 325                         ccb_tmp->acb = acb;
 326                         acb->pccb_pool[i] = ccb_tmp;
 327                         list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 328                         dma_addr = dma_addr + sizeof(struct CommandControlBlock);
 329                         ccb_tmp++;
 330                 }
 331
 332                 reg = (struct MessageUnit_B *)(dma_coherent +
 333                 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
 334                 acb->pmuB = reg;
 335                 mem_base0 = ioremap(pci_resource_start(pdev, 0),
 336                                         pci_resource_len(pdev, 0));
 337                 if (!mem_base0)
 338                         goto out;
 339
 340                 mem_base1 = ioremap(pci_resource_start(pdev, 2),
 341                                         pci_resource_len(pdev, 2));
 342                 if (!mem_base1) {
 343                         iounmap(mem_base0);
 344                         goto out;
 345                 }
 346
 347                 reg->drv2iop_doorbell_reg = mem_base0 + ARCMSR_DRV2IOP_DOORBELL;
 348                 reg->drv2iop_doorbell_mask_reg = mem_base0 +
 349                                                 ARCMSR_DRV2IOP_DOORBELL_MASK;
 350                 reg->iop2drv_doorbell_reg = mem_base0 + ARCMSR_IOP2DRV_DOORBELL;
 351                 reg->iop2drv_doorbell_mask_reg = mem_base0 +
 352                                                 ARCMSR_IOP2DRV_DOORBELL_MASK;
 353                 reg->ioctl_wbuffer_reg = mem_base1 + ARCMSR_IOCTL_WBUFFER;
 354                 reg->ioctl_rbuffer_reg = mem_base1 + ARCMSR_IOCTL_RBUFFER;
 355                 reg->msgcode_rwbuffer_reg = mem_base1 + ARCMSR_MSGCODE_RWBUFFER;
 356
 357                 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
 358                 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 359                         for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 360                                 acb->devstate[i][j] = ARECA_RAID_GOOD;
 361
 362                 /*
 363                 ** here we need to tell iop 331 our ccb_tmp.HighPart
 364                 ** if ccb_tmp.HighPart is not zero
 365                 */
 366                 intmask_org = arcmsr_disable_outbound_ints(acb);
 367                 }
 368                 break;
 369         }
 370         return 0;
 371
 372 out:
 373         dma_free_coherent(&acb->pdev->dev,
 374                 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20,
 375                 acb->dma_coherent, acb->dma_coherent_handle);
 376         return -ENOMEM;
 377 }
 378
 379 static int arcmsr_probe(struct pci_dev *pdev,
 380         const struct pci_device_id *id)
 381 {
 382         struct Scsi_Host *host;
 383         struct AdapterControlBlock *acb;
 384         uint8_t bus, dev_fun;
 385         int error;
 386
 387         error = pci_enable_device(pdev);
 388         if (error)
 389                 goto out;
 390         pci_set_master(pdev);
 391
 392         host = scsi_host_alloc(&arcmsr_scsi_host_template,
 393                         sizeof(struct AdapterControlBlock));
 394         if (!host) {
 395                 error = -ENOMEM;
 396                 goto out_disable_device;
 397         }
 398         acb = (struct AdapterControlBlock *)host->hostdata;
 399         memset(acb, 0, sizeof (struct AdapterControlBlock));
 400
 401         error = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
 402         if (error) {
 403                 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 404                 if (error) {
 405                         printk(KERN_WARNING
 406                                "scsi%d: No suitable DMA mask available\n",
 407                                host->host_no);
 408                         goto out_host_put;
 409                 }
 410         }
 411         bus = pdev->bus->number;
 412         dev_fun = pdev->devfn;
 413         acb->host = host;
 414         acb->pdev = pdev;
 415         host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
 416         host->max_lun = ARCMSR_MAX_TARGETLUN;
 417         host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
 418         host->max_cmd_len = 16;    /*this is issue of 64bit LBA, over 2T byte*/
 419         host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
 420         host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
 421         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 422         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 423         host->unique_id = (bus << 8) | dev_fun;
 424         host->irq = pdev->irq;
 425         error = pci_request_regions(pdev, "arcmsr");
 426         if (error) {
 427                 goto out_host_put;
 428         }
 429         arcmsr_define_adapter_type(acb);
 430
 431         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 432                            ACB_F_MESSAGE_RQBUFFER_CLEARED |
 433                            ACB_F_MESSAGE_WQBUFFER_READED);
 434         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 435         INIT_LIST_HEAD(&acb->ccb_free_list);
 436
 437         error = arcmsr_alloc_ccb_pool(acb);
 438         if (error)
 439                 goto out_release_regions;
 440
 441         error = request_irq(pdev->irq, arcmsr_do_interrupt,
 442                             IRQF_SHARED, "arcmsr", acb);
 443         if (error)
 444                 goto out_free_ccb_pool;
 445
 446         arcmsr_iop_init(acb);
 447         pci_set_drvdata(pdev, host);
 448         if (strncmp(acb->firm_version, "V1.42", 5) >= 0)
 449                 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B;
 450
 451         error = scsi_add_host(host, &pdev->dev);
 452         if (error)
 453                 goto out_free_irq;
 454
 455         error = arcmsr_alloc_sysfs_attr(acb);
 456         if (error)
 457                 goto out_free_sysfs;
 458
 459         scsi_scan_host(host);
 460         #ifdef CONFIG_SCSI_ARCMSR_AER
 461         pci_enable_pcie_error_reporting(pdev);
 462         #endif
 463         return 0;
 464  out_free_sysfs:
 465  out_free_irq:
 466         free_irq(pdev->irq, acb);
 467  out_free_ccb_pool:
 468         arcmsr_free_ccb_pool(acb);
 469  out_release_regions:
 470         pci_release_regions(pdev);
 471  out_host_put:
 472         scsi_host_put(host);
 473  out_disable_device:
 474         pci_disable_device(pdev);
 475  out:
 476         return error;
 477 }
 478
 479 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 480 {
 481         struct MessageUnit_A __iomem *reg = acb->pmuA;
 482         uint32_t Index;
 483         uint8_t Retries = 0x00;
 484
 485         do {
 486                 for (Index = 0; Index < 100; Index++) {
 487                         if (readl(&reg->outbound_intstatus) &
 488                                         ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 489                                 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
 490                                         &reg->outbound_intstatus);
 491                                 return 0x00;
 492                         }
 493                         msleep(10);
 494                 }/*max 1 seconds*/
 495
 496         } while (Retries++ < 20);/*max 20 sec*/
 497         return 0xff;
 498 }
 499
 500 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
 501 {
 502         struct MessageUnit_B *reg = acb->pmuB;
 503         uint32_t Index;
 504         uint8_t Retries = 0x00;
 505
 506         do {
 507                 for (Index = 0; Index < 100; Index++) {
 508                         if (readl(reg->iop2drv_doorbell_reg)
 509                                 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 510                                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
 511                                         , reg->iop2drv_doorbell_reg);
 512                                 return 0x00;
 513                         }
 514                         msleep(10);
 515                 }/*max 1 seconds*/
 516
 517         } while (Retries++ < 20);/*max 20 sec*/
 518         return 0xff;
 519 }
 520
 521 static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 522 {
 523         struct MessageUnit_A __iomem *reg = acb->pmuA;
 524
 525         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 526         if (arcmsr_hba_wait_msgint_ready(acb))
 527                 printk(KERN_NOTICE
 528                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 529                         , acb->host->host_no);
 530 }
 531
 532 static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 533 {
 534         struct MessageUnit_B *reg = acb->pmuB;
 535
 536         writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg);
 537         if (arcmsr_hbb_wait_msgint_ready(acb))
 538                 printk(KERN_NOTICE
 539                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 540                         , acb->host->host_no);
 541 }
 542
 543 static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 544 {
 545         switch (acb->adapter_type) {
 546         case ACB_ADAPTER_TYPE_A: {
 547                 arcmsr_abort_hba_allcmd(acb);
 548                 }
 549                 break;
 550
 551         case ACB_ADAPTER_TYPE_B: {
 552                 arcmsr_abort_hbb_allcmd(acb);
 553                 }
 554         }
 555 }
 556
 557 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 558 {
 559         struct scsi_cmnd *pcmd = ccb->pcmd;
 560
 561         scsi_dma_unmap(pcmd);
 562 }
 563
 564 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
 565 {
 566         struct AdapterControlBlock *acb = ccb->acb;
 567         struct scsi_cmnd *pcmd = ccb->pcmd;
 568
 569         arcmsr_pci_unmap_dma(ccb);
 570         if (stand_flag == 1)
 571                 atomic_dec(&acb->ccboutstandingcount);
 572         ccb->startdone = ARCMSR_CCB_DONE;
 573         ccb->ccb_flags = 0;
 574         list_add_tail(&ccb->list, &acb->ccb_free_list);
 575         pcmd->scsi_done(pcmd);
 576 }
 577
 578 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 579 {
 580         struct MessageUnit_A __iomem *reg = acb->pmuA;
 581         int retry_count = 30;
 582
 583         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 584         do {
 585                 if (!arcmsr_hba_wait_msgint_ready(acb))
 586                         break;
 587                 else {
 588                         retry_count--;
 589                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 590                         timeout, retry count down = %d \n", acb->host->host_no, retry_count);
 591                 }
 592         } while (retry_count != 0);
 593 }
 594
 595 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
 596 {
 597         struct MessageUnit_B *reg = acb->pmuB;
 598         int retry_count = 30;
 599
 600         writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg);
 601         do {
 602                 if (!arcmsr_hbb_wait_msgint_ready(acb))
 603                         break;
 604                 else {
 605                         retry_count--;
 606                         printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
 607                         timeout,retry count down = %d \n", acb->host->host_no, retry_count);
 608                 }
 609         } while (retry_count != 0);
 610 }
 611
 612 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 613 {
 614         switch (acb->adapter_type) {
 615
 616         case ACB_ADAPTER_TYPE_A: {
 617                 arcmsr_flush_hba_cache(acb);
 618                 }
 619                 break;
 620
 621         case ACB_ADAPTER_TYPE_B: {
 622                 arcmsr_flush_hbb_cache(acb);
 623                 }
 624         }
 625 }
 626
 627 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 628 {
 629
 630         struct scsi_cmnd *pcmd = ccb->pcmd;
 631         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 632
 633         pcmd->result = DID_OK << 16;
 634         if (sensebuffer) {
 635                 int sense_data_length =
 636                         sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
 637                         ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
 638                 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
 639                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 640                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 641                 sensebuffer->Valid = 1;
 642         }
 643 }
 644
 645 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 646 {
 647         u32 orig_mask = 0;
 648         switch (acb->adapter_type) {
 649
 650         case ACB_ADAPTER_TYPE_A : {
 651                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 652                 orig_mask = readl(&reg->outbound_intmask)|\
 653                                 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
 654                 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 655                                                 &reg->outbound_intmask);
 656                 }
 657                 break;
 658
 659         case ACB_ADAPTER_TYPE_B : {
 660                 struct MessageUnit_B *reg = acb->pmuB;
 661                 orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \
 662                                         (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
 663                 writel(0, reg->iop2drv_doorbell_mask_reg);
 664                 }
 665                 break;
 666         }
 667         return orig_mask;
 668 }
 669
 670 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \
 671                         struct CommandControlBlock *ccb, uint32_t flag_ccb)
 672 {
 673
 674         uint8_t id, lun;
 675         id = ccb->pcmd->device->id;
 676         lun = ccb->pcmd->device->lun;
 677         if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
 678                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 679                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 680                         ccb->pcmd->result = DID_OK << 16;
 681                         arcmsr_ccb_complete(ccb, 1);
 682         } else {
 683                 switch (ccb->arcmsr_cdb.DeviceStatus) {
 684                 case ARCMSR_DEV_SELECT_TIMEOUT: {
 685                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 686                         ccb->pcmd->result = DID_NO_CONNECT << 16;
 687                         arcmsr_ccb_complete(ccb, 1);
 688                         }
 689                         break;
 690
 691                 case ARCMSR_DEV_ABORTED:
 692
 693                 case ARCMSR_DEV_INIT_FAIL: {
 694                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 695                         ccb->pcmd->result = DID_BAD_TARGET << 16;
 696                         arcmsr_ccb_complete(ccb, 1);
 697                         }
 698                         break;
 699
 700                 case ARCMSR_DEV_CHECK_CONDITION: {
 701                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 702                         arcmsr_report_sense_info(ccb);
 703                         arcmsr_ccb_complete(ccb, 1);
 704                         }
 705                         break;
 706
 707                 default:
 708                                 printk(KERN_NOTICE
 709                                         "arcmsr%d: scsi id = %d lun = %d"
 710                                         " isr get command error done, "
 711                                         "but got unknown DeviceStatus = 0x%x \n"
 712                                         , acb->host->host_no
 713                                         , id
 714                                         , lun
 715                                         , ccb->arcmsr_cdb.DeviceStatus);
 716                                         acb->devstate[id][lun] = ARECA_RAID_GONE;
 717                                         ccb->pcmd->result = DID_NO_CONNECT << 16;
 718                                         arcmsr_ccb_complete(ccb, 1);
 719                         break;
 720                 }
 721         }
 722 }
 723
 724 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb)
 725
 726 {
 727         struct CommandControlBlock *ccb;
 728
 729         ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5));
 730         if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
 731                 if (ccb->startdone == ARCMSR_CCB_ABORTED) {
 732                         struct scsi_cmnd *abortcmd = ccb->pcmd;
 733                         if (abortcmd) {
 734                                 abortcmd->result |= DID_ABORT << 16;
 735                                 arcmsr_ccb_complete(ccb, 1);
 736                                 printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \
 737                                 isr got aborted command \n", acb->host->host_no, ccb);
 738                         }
 739                 }
 740                 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 741                                 done acb = '0x%p'"
 742                                 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
 743                                 " ccboutstandingcount = %d \n"
 744                                 , acb->host->host_no
 745                                 , acb
 746                                 , ccb
 747                                 , ccb->acb
 748                                 , ccb->startdone
 749                                 , atomic_read(&acb->ccboutstandingcount));
 750                 }
 751         arcmsr_report_ccb_state(acb, ccb, flag_ccb);
 752 }
 753
 754 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 755 {
 756         int i = 0;
 757         uint32_t flag_ccb;
 758
 759         switch (acb->adapter_type) {
 760
 761         case ACB_ADAPTER_TYPE_A: {
 762                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 763                 uint32_t outbound_intstatus;
 764                 outbound_intstatus = readl(&reg->outbound_intstatus) &
 765                                         acb->outbound_int_enable;
 766                 /*clear and abort all outbound posted Q*/
 767                 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
 768                 while (((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 769                                 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
 770                         arcmsr_drain_donequeue(acb, flag_ccb);
 771                 }
 772                 }
 773                 break;
 774
 775         case ACB_ADAPTER_TYPE_B: {
 776                 struct MessageUnit_B *reg = acb->pmuB;
 777                 /*clear all outbound posted Q*/
 778                 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 779                         if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 780                                 writel(0, &reg->done_qbuffer[i]);
 781                                 arcmsr_drain_donequeue(acb, flag_ccb);
 782                         }
 783                         writel(0, &reg->post_qbuffer[i]);
 784                 }
 785                 reg->doneq_index = 0;
 786                 reg->postq_index = 0;
 787                 }
 788                 break;
 789         }
 790 }
 791 static void arcmsr_remove(struct pci_dev *pdev)
 792 {
 793         struct Scsi_Host *host = pci_get_drvdata(pdev);
 794         struct AdapterControlBlock *acb =
 795                 (struct AdapterControlBlock *) host->hostdata;
 796         int poll_count = 0;
 797
 798         arcmsr_free_sysfs_attr(acb);
 799         scsi_remove_host(host);
 800         arcmsr_stop_adapter_bgrb(acb);
 801         arcmsr_flush_adapter_cache(acb);
 802         arcmsr_disable_outbound_ints(acb);
 803         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
 804         acb->acb_flags &= ~ACB_F_IOP_INITED;
 805
 806         for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) {
 807                 if (!atomic_read(&acb->ccboutstandingcount))
 808                         break;
 809                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
 810                 msleep(25);
 811         }
 812
 813         if (atomic_read(&acb->ccboutstandingcount)) {
 814                 int i;
 815
 816                 arcmsr_abort_allcmd(acb);
 817                 arcmsr_done4abort_postqueue(acb);
 818                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
 819                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
 820                         if (ccb->startdone == ARCMSR_CCB_START) {
 821                                 ccb->startdone = ARCMSR_CCB_ABORTED;
 822                                 ccb->pcmd->result = DID_ABORT << 16;
 823                                 arcmsr_ccb_complete(ccb, 1);
 824                         }
 825                 }
 826         }
 827
 828         free_irq(pdev->irq, acb);
 829         arcmsr_free_ccb_pool(acb);
 830         pci_release_regions(pdev);
 831
 832         scsi_host_put(host);
 833
 834         pci_disable_device(pdev);
 835         pci_set_drvdata(pdev, NULL);
 836 }
 837
 838 static void arcmsr_shutdown(struct pci_dev *pdev)
 839 {
 840         struct Scsi_Host *host = pci_get_drvdata(pdev);
 841         struct AdapterControlBlock *acb =
 842                 (struct AdapterControlBlock *)host->hostdata;
 843
 844         arcmsr_stop_adapter_bgrb(acb);
 845         arcmsr_flush_adapter_cache(acb);
 846 }
 847
 848 static int arcmsr_module_init(void)
 849 {
 850         int error = 0;
 851
 852         error = pci_register_driver(&arcmsr_pci_driver);
 853         return error;
 854 }
 855
 856 static void arcmsr_module_exit(void)
 857 {
 858         pci_unregister_driver(&arcmsr_pci_driver);
 859 }
 860 module_init(arcmsr_module_init);
 861 module_exit(arcmsr_module_exit);
 862
 863 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \
 864                                                 u32 intmask_org)
 865 {
 866         u32 mask;
 867
 868         switch (acb->adapter_type) {
 869
 870         case ACB_ADAPTER_TYPE_A : {
 871                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 872                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
 873                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
 874                 writel(mask, &reg->outbound_intmask);
 875                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
 876                 }
 877                 break;
 878
 879         case ACB_ADAPTER_TYPE_B : {
 880                 struct MessageUnit_B *reg = acb->pmuB;
 881                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \
 882                         ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE);
 883                 writel(mask, reg->iop2drv_doorbell_mask_reg);
 884                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
 885                 }
 886         }
 887 }
 888
 889 static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
 890         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
 891 {
 892         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
 893         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
 894         __le32 address_lo, address_hi;
 895         int arccdbsize = 0x30;
 896         int nseg;
 897
 898         ccb->pcmd = pcmd;
 899         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
 900         arcmsr_cdb->Bus = 0;
 901         arcmsr_cdb->TargetID = pcmd->device->id;
 902         arcmsr_cdb->LUN = pcmd->device->lun;
 903         arcmsr_cdb->Function = 1;
 904         arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
 905         arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
 906         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
 907
 908         nseg = scsi_dma_map(pcmd);
 909         BUG_ON(nseg < 0);
 910
 911         if (nseg) {
 912                 __le32 length;
 913                 int i, cdb_sgcount = 0;
 914                 struct scatterlist *sg;
 915
 916                 /* map stor port SG list to our iop SG List. */
 917                 scsi_for_each_sg(pcmd, sg, nseg, i) {
 918                         /* Get the physical address of the current data pointer */
 919                         length = cpu_to_le32(sg_dma_len(sg));
 920                         address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
 921                         address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
 922                         if (address_hi == 0) {
 923                                 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
 924
 925                                 pdma_sg->address = address_lo;
 926                                 pdma_sg->length = length;
 927                                 psge += sizeof (struct SG32ENTRY);
 928                                 arccdbsize += sizeof (struct SG32ENTRY);
 929                         } else {
 930                                 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
 931
 932                                 pdma_sg->addresshigh = address_hi;
 933                                 pdma_sg->address = address_lo;
 934                                 pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
 935                                 psge += sizeof (struct SG64ENTRY);
 936                                 arccdbsize += sizeof (struct SG64ENTRY);
 937                         }
 938                         cdb_sgcount++;
 939                 }
 940                 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
 941                 arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
 942                 if ( arccdbsize > 256)
 943                         arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
 944         }
 945         if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
 946                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
 947                 ccb->ccb_flags |= CCB_FLAG_WRITE;
 948         }
 949 }
 950
 951 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
 952 {
 953         uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
 954         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
 955         atomic_inc(&acb->ccboutstandingcount);
 956         ccb->startdone = ARCMSR_CCB_START;
 957
 958         switch (acb->adapter_type) {
 959         case ACB_ADAPTER_TYPE_A: {
 960                 struct MessageUnit_A __iomem *reg = acb->pmuA;
 961
 962                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
 963                         writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
 964                         &reg->inbound_queueport);
 965                 else {
 966                                 writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
 967                 }
 968                 }
 969                 break;
 970
 971         case ACB_ADAPTER_TYPE_B: {
 972                 struct MessageUnit_B *reg = acb->pmuB;
 973                 uint32_t ending_index, index = reg->postq_index;
 974
 975                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
 976                 writel(0, &reg->post_qbuffer[ending_index]);
 977                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
 978                         writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
 979                                                  &reg->post_qbuffer[index]);
 980                 }
 981                 else {
 982                         writel(cdb_shifted_phyaddr, &reg->post_qbuffer[index]);
 983                 }
 984                 index++;
 985                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
 986                 reg->postq_index = index;
 987                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg);
 988                 }
 989                 break;
 990         }
 991 }
 992
 993 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
 994 {
 995         struct MessageUnit_A __iomem *reg = acb->pmuA;
 996         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
 997         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
 998
 999         if (arcmsr_hba_wait_msgint_ready(acb)) {
1000                 printk(KERN_NOTICE
1001                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1002                         , acb->host->host_no);
1003         }
1004 }
1005
1006 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1007 {
1008         struct MessageUnit_B *reg = acb->pmuB;
1009         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1010         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg);
1011
1012         if (arcmsr_hbb_wait_msgint_ready(acb)) {
1013                 printk(KERN_NOTICE
1014                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1015                         , acb->host->host_no);
1016         }
1017 }
1018
1019 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1020 {
1021         switch (acb->adapter_type) {
1022         case ACB_ADAPTER_TYPE_A: {
1023                 arcmsr_stop_hba_bgrb(acb);
1024                 }
1025                 break;
1026
1027         case ACB_ADAPTER_TYPE_B: {
1028                 arcmsr_stop_hbb_bgrb(acb);
1029                 }
1030                 break;
1031         }
1032 }
1033
1034 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1035 {
1036         switch (acb->adapter_type) {
1037         case ACB_ADAPTER_TYPE_A: {
1038                 iounmap(acb->pmuA);
1039                 break;
1040         }
1041         case ACB_ADAPTER_TYPE_B: {
1042                 struct MessageUnit_B *reg = acb->pmuB;
1043                 iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL);
1044                 iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER);
1045         }
1046         }
1047         dma_free_coherent(&acb->pdev->dev,
1048                 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
1049                 acb->dma_coherent,
1050                 acb->dma_coherent_handle);
1051 }
1052
1053 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1054 {
1055         switch (acb->adapter_type) {
1056         case ACB_ADAPTER_TYPE_A: {
1057                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1058                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1059                 }
1060                 break;
1061
1062         case ACB_ADAPTER_TYPE_B: {
1063                 struct MessageUnit_B *reg = acb->pmuB;
1064                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg);
1065                 }
1066                 break;
1067         }
1068 }
1069
1070 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1071 {
1072         switch (acb->adapter_type) {
1073         case ACB_ADAPTER_TYPE_A: {
1074                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1075                 /*
1076                 ** push inbound doorbell tell iop, driver data write ok
1077                 ** and wait reply on next hwinterrupt for next Qbuffer post
1078                 */
1079                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1080                 }
1081                 break;
1082
1083         case ACB_ADAPTER_TYPE_B: {
1084                 struct MessageUnit_B *reg = acb->pmuB;
1085                 /*
1086                 ** push inbound doorbell tell iop, driver data write ok
1087                 ** and wait reply on next hwinterrupt for next Qbuffer post
1088                 */
1089                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg);
1090                 }
1091                 break;
1092         }
1093 }
1094
1095 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1096 {
1097         struct QBUFFER __iomem *qbuffer = NULL;
1098
1099         switch (acb->adapter_type) {
1100
1101         case ACB_ADAPTER_TYPE_A: {
1102                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1103                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1104                 }
1105                 break;
1106
1107         case ACB_ADAPTER_TYPE_B: {
1108                 struct MessageUnit_B *reg = acb->pmuB;
1109                 qbuffer = (struct QBUFFER __iomem *)reg->ioctl_rbuffer_reg;
1110                 }
1111                 break;
1112         }
1113         return qbuffer;
1114 }
1115
1116 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1117 {
1118         struct QBUFFER __iomem *pqbuffer = NULL;
1119
1120         switch (acb->adapter_type) {
1121
1122         case ACB_ADAPTER_TYPE_A: {
1123                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1124                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1125                 }
1126                 break;
1127
1128         case ACB_ADAPTER_TYPE_B: {
1129                 struct MessageUnit_B  *reg = acb->pmuB;
1130                 pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg;
1131                 }
1132                 break;
1133         }
1134         return pqbuffer;
1135 }
1136
1137 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1138 {
1139         struct QBUFFER __iomem *prbuffer;
1140         struct QBUFFER *pQbuffer;
1141         uint8_t __iomem *iop_data;
1142         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1143
1144         rqbuf_lastindex = acb->rqbuf_lastindex;
1145         rqbuf_firstindex = acb->rqbuf_firstindex;
1146         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1147         iop_data = (uint8_t __iomem *)prbuffer->data;
1148         iop_len = prbuffer->data_len;
1149         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1);
1150
1151         if (my_empty_len >= iop_len)
1152         {
1153                 while (iop_len > 0) {
1154                         pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1155                         memcpy(pQbuffer, iop_data,1);
1156                         rqbuf_lastindex++;
1157                         rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1158                         iop_data++;
1159                         iop_len--;
1160                 }
1161                 acb->rqbuf_lastindex = rqbuf_lastindex;
1162                 arcmsr_iop_message_read(acb);
1163         }
1164
1165         else {
1166                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1167         }
1168 }
1169
1170 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1171 {
1172         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1173         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1174                 uint8_t *pQbuffer;
1175                 struct QBUFFER __iomem *pwbuffer;
1176                 uint8_t __iomem *iop_data;
1177                 int32_t allxfer_len = 0;
1178
1179                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1180                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1181                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1182
1183                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1184                                                         (allxfer_len < 124)) {
1185                         pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1186                         memcpy(iop_data, pQbuffer, 1);
1187                         acb->wqbuf_firstindex++;
1188                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1189                         iop_data++;
1190                         allxfer_len++;
1191                 }
1192                 pwbuffer->data_len = allxfer_len;
1193
1194                 arcmsr_iop_message_wrote(acb);
1195         }
1196
1197         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1198                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1199         }
1200 }
1201
1202 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1203 {
1204         uint32_t outbound_doorbell;
1205         struct MessageUnit_A __iomem *reg = acb->pmuA;
1206
1207         outbound_doorbell = readl(&reg->outbound_doorbell);
1208         writel(outbound_doorbell, &reg->outbound_doorbell);
1209         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1210                 arcmsr_iop2drv_data_wrote_handle(acb);
1211         }
1212
1213         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK)    {
1214                 arcmsr_iop2drv_data_read_handle(acb);
1215         }
1216 }
1217
1218 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1219 {
1220         uint32_t flag_ccb;
1221         struct MessageUnit_A __iomem *reg = acb->pmuA;
1222
1223         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1224                 arcmsr_drain_donequeue(acb, flag_ccb);
1225         }
1226 }
1227
1228 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1229 {
1230         uint32_t index;
1231         uint32_t flag_ccb;
1232         struct MessageUnit_B *reg = acb->pmuB;
1233
1234         index = reg->doneq_index;
1235
1236         while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1237                 writel(0, &reg->done_qbuffer[index]);
1238                 arcmsr_drain_donequeue(acb, flag_ccb);
1239                 index++;
1240                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1241                 reg->doneq_index = index;
1242         }
1243 }
1244
1245 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1246 {
1247         uint32_t outbound_intstatus;
1248         struct MessageUnit_A __iomem *reg = acb->pmuA;
1249
1250         outbound_intstatus = readl(&reg->outbound_intstatus) & \
1251                                                         acb->outbound_int_enable;
1252         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1253                 return 1;
1254         }
1255         writel(outbound_intstatus, &reg->outbound_intstatus);
1256         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1257                 arcmsr_hba_doorbell_isr(acb);
1258         }
1259         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1260                 arcmsr_hba_postqueue_isr(acb);
1261         }
1262         return 0;
1263 }
1264
1265 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1266 {
1267         uint32_t outbound_doorbell;
1268         struct MessageUnit_B *reg = acb->pmuB;
1269
1270         outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \
1271                                                         acb->outbound_int_enable;
1272         if (!outbound_doorbell)
1273                 return 1;
1274
1275         writel(~outbound_doorbell, reg->iop2drv_doorbell_reg);
1276
1277         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK)   {
1278                 arcmsr_iop2drv_data_wrote_handle(acb);
1279         }
1280         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1281                 arcmsr_iop2drv_data_read_handle(acb);
1282         }
1283         if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1284                 arcmsr_hbb_postqueue_isr(acb);
1285         }
1286
1287         return 0;
1288 }
1289
1290 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1291 {
1292         switch (acb->adapter_type) {
1293         case ACB_ADAPTER_TYPE_A: {
1294                 if (arcmsr_handle_hba_isr(acb)) {
1295                         return IRQ_NONE;
1296                 }
1297                 }
1298                 break;
1299
1300         case ACB_ADAPTER_TYPE_B: {
1301                 if (arcmsr_handle_hbb_isr(acb)) {
1302                         return IRQ_NONE;
1303                 }
1304                 }
1305                 break;
1306         }
1307         return IRQ_HANDLED;
1308 }
1309
1310 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1311 {
1312         if (acb) {
1313                 /* stop adapter background rebuild */
1314                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1315                         uint32_t intmask_org;
1316                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1317                         intmask_org = arcmsr_disable_outbound_ints(acb);
1318                         arcmsr_stop_adapter_bgrb(acb);
1319                         arcmsr_flush_adapter_cache(acb);
1320                         arcmsr_enable_outbound_ints(acb, intmask_org);
1321                 }
1322         }
1323 }
1324
1325 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1326 {
1327         int32_t wqbuf_firstindex, wqbuf_lastindex;
1328         uint8_t *pQbuffer;
1329         struct QBUFFER __iomem *pwbuffer;
1330         uint8_t __iomem *iop_data;
1331         int32_t allxfer_len = 0;
1332
1333         pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1334         iop_data = (uint8_t __iomem *)pwbuffer->data;
1335         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1336                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1337                 wqbuf_firstindex = acb->wqbuf_firstindex;
1338                 wqbuf_lastindex = acb->wqbuf_lastindex;
1339                 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1340                         pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1341                         memcpy(iop_data, pQbuffer, 1);
1342                         wqbuf_firstindex++;
1343                         wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1344                         iop_data++;
1345                         allxfer_len++;
1346                 }
1347                 acb->wqbuf_firstindex = wqbuf_firstindex;
1348                 pwbuffer->data_len = allxfer_len;
1349                 arcmsr_iop_message_wrote(acb);
1350         }
1351 }
1352
1353 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
1354                                         struct scsi_cmnd *cmd)
1355 {
1356         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1357         int retvalue = 0, transfer_len = 0;
1358         char *buffer;
1359         struct scatterlist *sg;
1360         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1361                                                 (uint32_t ) cmd->cmnd[6] << 16 |
1362                                                 (uint32_t ) cmd->cmnd[7] << 8  |
1363                                                 (uint32_t ) cmd->cmnd[8];
1364                                                 /* 4 bytes: Areca io control code */
1365
1366         sg = scsi_sglist(cmd);
1367         buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1368         if (scsi_sg_count(cmd) > 1) {
1369                 retvalue = ARCMSR_MESSAGE_FAIL;
1370                 goto message_out;
1371         }
1372         transfer_len += sg->length;
1373
1374         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1375                 retvalue = ARCMSR_MESSAGE_FAIL;
1376                 goto message_out;
1377         }
1378         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1379         switch(controlcode) {
1380
1381         case ARCMSR_MESSAGE_READ_RQBUFFER: {
1382                 unsigned long *ver_addr;
1383                 dma_addr_t buf_handle;
1384                 uint8_t *pQbuffer, *ptmpQbuffer;
1385                 int32_t allxfer_len = 0;
1386
1387                 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
1388                 if (!ver_addr) {
1389                         retvalue = ARCMSR_MESSAGE_FAIL;
1390                         goto message_out;
1391                 }
1392                 ptmpQbuffer = (uint8_t *) ver_addr;
1393                 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1394                         && (allxfer_len < 1031)) {
1395                         pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1396                         memcpy(ptmpQbuffer, pQbuffer, 1);
1397                         acb->rqbuf_firstindex++;
1398                         acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1399                         ptmpQbuffer++;
1400                         allxfer_len++;
1401                 }
1402                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1403
1404                         struct QBUFFER __iomem *prbuffer;
1405                         uint8_t __iomem *iop_data;
1406                         int32_t iop_len;
1407
1408                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1409                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1410                         iop_data = prbuffer->data;
1411                         iop_len = readl(&prbuffer->data_len);
1412                         while (iop_len > 0) {
1413                                 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1414                                 acb->rqbuf_lastindex++;
1415                                 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1416                                 iop_data++;
1417                                 iop_len--;
1418                         }
1419                         arcmsr_iop_message_read(acb);
1420                 }
1421                 memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len);
1422                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1423                 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1424                 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
1425                 }
1426                 break;
1427
1428         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1429                 unsigned long *ver_addr;
1430                 dma_addr_t buf_handle;
1431                 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1432                 uint8_t *pQbuffer, *ptmpuserbuffer;
1433
1434                 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
1435                 if (!ver_addr) {
1436                         retvalue = ARCMSR_MESSAGE_FAIL;
1437                         goto message_out;
1438                 }
1439                 ptmpuserbuffer = (uint8_t *)ver_addr;
1440                 user_len = pcmdmessagefld->cmdmessage.Length;
1441                 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1442                 wqbuf_lastindex = acb->wqbuf_lastindex;
1443                 wqbuf_firstindex = acb->wqbuf_firstindex;
1444                 if (wqbuf_lastindex != wqbuf_firstindex) {
1445                         struct SENSE_DATA *sensebuffer =
1446                                 (struct SENSE_DATA *)cmd->sense_buffer;
1447                         arcmsr_post_ioctldata2iop(acb);
1448                         /* has error report sensedata */
1449                         sensebuffer->ErrorCode = 0x70;
1450                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
1451                         sensebuffer->AdditionalSenseLength = 0x0A;
1452                         sensebuffer->AdditionalSenseCode = 0x20;
1453                         sensebuffer->Valid = 1;
1454                         retvalue = ARCMSR_MESSAGE_FAIL;
1455                 } else {
1456                         my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1457                                 &(ARCMSR_MAX_QBUFFER - 1);
1458                         if (my_empty_len >= user_len) {
1459                                 while (user_len > 0) {
1460                                         pQbuffer =
1461                                         &acb->wqbuffer[acb->wqbuf_lastindex];
1462                                         memcpy(pQbuffer, ptmpuserbuffer, 1);
1463                                         acb->wqbuf_lastindex++;
1464                                         acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1465                                         ptmpuserbuffer++;
1466                                         user_len--;
1467                                 }
1468                                 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1469                                         acb->acb_flags &=
1470                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1471                                         arcmsr_post_ioctldata2iop(acb);
1472                                 }
1473                         } else {
1474                                 /* has error report sensedata */
1475                                 struct SENSE_DATA *sensebuffer =
1476                                         (struct SENSE_DATA *)cmd->sense_buffer;
1477                                 sensebuffer->ErrorCode = 0x70;
1478                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1479                                 sensebuffer->AdditionalSenseLength = 0x0A;
1480                                 sensebuffer->AdditionalSenseCode = 0x20;
1481                                 sensebuffer->Valid = 1;
1482                                 retvalue = ARCMSR_MESSAGE_FAIL;
1483                         }
1484                         }
1485                         pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
1486                 }
1487                 break;
1488
1489         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1490                 uint8_t *pQbuffer = acb->rqbuffer;
1491
1492                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1493                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1494                         arcmsr_iop_message_read(acb);
1495                 }
1496                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1497                 acb->rqbuf_firstindex = 0;
1498                 acb->rqbuf_lastindex = 0;
1499                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1500                 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1501                 }
1502                 break;
1503
1504         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1505                 uint8_t *pQbuffer = acb->wqbuffer;
1506
1507                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1508                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1509                         arcmsr_iop_message_read(acb);
1510                 }
1511                 acb->acb_flags |=
1512                         (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1513                                 ACB_F_MESSAGE_WQBUFFER_READED);
1514                 acb->wqbuf_firstindex = 0;
1515                 acb->wqbuf_lastindex = 0;
1516                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1517                 pcmdmessagefld->cmdmessage.ReturnCode =
1518                         ARCMSR_MESSAGE_RETURNCODE_OK;
1519                 }
1520                 break;
1521
1522         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1523                 uint8_t *pQbuffer;
1524
1525                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1526                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1527                         arcmsr_iop_message_read(acb);
1528                 }
1529                 acb->acb_flags |=
1530                         (ACB_F_MESSAGE_WQBUFFER_CLEARED
1531                         | ACB_F_MESSAGE_RQBUFFER_CLEARED
1532                         | ACB_F_MESSAGE_WQBUFFER_READED);
1533                 acb->rqbuf_firstindex = 0;
1534                 acb->rqbuf_lastindex = 0;
1535                 acb->wqbuf_firstindex = 0;
1536                 acb->wqbuf_lastindex = 0;
1537                 pQbuffer = acb->rqbuffer;
1538                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1539                 pQbuffer = acb->wqbuffer;
1540                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1541                 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1542                 }
1543                 break;
1544
1545         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1546                 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
1547                 }
1548                 break;
1549
1550         case ARCMSR_MESSAGE_SAY_HELLO: {
1551                 int8_t *hello_string = "Hello! I am ARCMSR";
1552
1553                 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1554                         , (int16_t)strlen(hello_string));
1555                 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1556                 }
1557                 break;
1558
1559         case ARCMSR_MESSAGE_SAY_GOODBYE:
1560                 arcmsr_iop_parking(acb);
1561                 break;
1562
1563         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1564                 arcmsr_flush_adapter_cache(acb);
1565                 break;
1566
1567         default:
1568                 retvalue = ARCMSR_MESSAGE_FAIL;
1569         }
1570         message_out:
1571         sg = scsi_sglist(cmd);
1572         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1573         return retvalue;
1574 }
1575
1576 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1577 {
1578         struct list_head *head = &acb->ccb_free_list;
1579         struct CommandControlBlock *ccb = NULL;
1580
1581         if (!list_empty(head)) {
1582                 ccb = list_entry(head->next, struct CommandControlBlock, list);
1583                 list_del(head->next);
1584         }
1585         return ccb;
1586 }
1587
1588 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
1589                 struct scsi_cmnd *cmd)
1590 {
1591         switch (cmd->cmnd[0]) {
1592         case INQUIRY: {
1593                 unsigned char inqdata[36];
1594                 char *buffer;
1595                 struct scatterlist *sg;
1596
1597                 if (cmd->device->lun) {
1598                         cmd->result = (DID_TIME_OUT << 16);
1599                         cmd->scsi_done(cmd);
1600                         return;
1601                 }
1602                 inqdata[0] = TYPE_PROCESSOR;
1603                 /* Periph Qualifier & Periph Dev Type */
1604                 inqdata[1] = 0;
1605                 /* rem media bit & Dev Type Modifier */
1606                 inqdata[2] = 0;
1607                 /* ISO, ECMA, & ANSI versions */
1608                 inqdata[4] = 31;
1609                 /* length of additional data */
1610                 strncpy(&inqdata[8], "Areca   ", 8);
1611                 /* Vendor Identification */
1612                 strncpy(&inqdata[16], "RAID controller ", 16);
1613                 /* Product Identification */
1614                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
1615
1616                 sg = scsi_sglist(cmd);
1617                 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1618
1619                 memcpy(buffer, inqdata, sizeof(inqdata));
1620                 sg = scsi_sglist(cmd);
1621                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1622
1623                 cmd->scsi_done(cmd);
1624         }
1625         break;
1626         case WRITE_BUFFER:
1627         case READ_BUFFER: {
1628                 if (arcmsr_iop_message_xfer(acb, cmd))
1629                         cmd->result = (DID_ERROR << 16);
1630                 cmd->scsi_done(cmd);
1631         }
1632         break;
1633         default:
1634                 cmd->scsi_done(cmd);
1635         }
1636 }
1637
1638 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
1639         void (* done)(struct scsi_cmnd *))
1640 {
1641         struct Scsi_Host *host = cmd->device->host;
1642         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
1643         struct CommandControlBlock *ccb;
1644         int target = cmd->device->id;
1645         int lun = cmd->device->lun;
1646
1647         cmd->scsi_done = done;
1648         cmd->host_scribble = NULL;
1649         cmd->result = 0;
1650         if (acb->acb_flags & ACB_F_BUS_RESET) {
1651                 printk(KERN_NOTICE "arcmsr%d: bus reset"
1652                         " and return busy \n"
1653                         , acb->host->host_no);
1654                 return SCSI_MLQUEUE_HOST_BUSY;
1655         }
1656         if (target == 16) {
1657                 /* virtual device for iop message transfer */
1658                 arcmsr_handle_virtual_command(acb, cmd);
1659                 return 0;
1660         }
1661         if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
1662                 uint8_t block_cmd;
1663
1664                 block_cmd = cmd->cmnd[0] & 0x0f;
1665                 if (block_cmd == 0x08 || block_cmd == 0x0a) {
1666                         printk(KERN_NOTICE
1667                                 "arcmsr%d: block 'read/write'"
1668                                 "command with gone raid volume"
1669                                 " Cmd = %2x, TargetId = %d, Lun = %d \n"
1670                                 , acb->host->host_no
1671                                 , cmd->cmnd[0]
1672                                 , target, lun);
1673                         cmd->result = (DID_NO_CONNECT << 16);
1674                         cmd->scsi_done(cmd);
1675                         return 0;
1676                 }
1677         }
1678         if (atomic_read(&acb->ccboutstandingcount) >=
1679                         ARCMSR_MAX_OUTSTANDING_CMD)
1680                 return SCSI_MLQUEUE_HOST_BUSY;
1681
1682         ccb = arcmsr_get_freeccb(acb);
1683         if (!ccb)
1684                 return SCSI_MLQUEUE_HOST_BUSY;
1685
1686         arcmsr_build_ccb(acb, ccb, cmd);
1687         arcmsr_post_ccb(acb, ccb);
1688         return 0;
1689 }
1690
1691 static void arcmsr_get_hba_config(struct AdapterControlBlock *acb)
1692 {
1693         struct MessageUnit_A __iomem *reg = acb->pmuA;
1694         char *acb_firm_model = acb->firm_model;
1695         char *acb_firm_version = acb->firm_version;
1696         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
1697         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
1698         int count;
1699
1700         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
1701         if (arcmsr_hba_wait_msgint_ready(acb)) {
1702                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
1703                         miscellaneous data' timeout \n", acb->host->host_no);
1704         }
1705
1706         count = 8;
1707         while (count) {
1708                 *acb_firm_model = readb(iop_firm_model);
1709                 acb_firm_model++;
1710                 iop_firm_model++;
1711                 count--;
1712         }
1713
1714         count = 16;
1715         while (count) {
1716                 *acb_firm_version = readb(iop_firm_version);
1717                 acb_firm_version++;
1718                 iop_firm_version++;
1719                 count--;
1720         }
1721
1722         printk(KERN_INFO        "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
1723                 , acb->host->host_no
1724                 , acb->firm_version);
1725
1726         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
1727         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
1728         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
1729         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
1730 }
1731
1732 static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
1733 {
1734         struct MessageUnit_B *reg = acb->pmuB;
1735         uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg;
1736         char *acb_firm_model = acb->firm_model;
1737         char *acb_firm_version = acb->firm_version;
1738         char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]);
1739         /*firm_model,15,60-67*/
1740         char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]);
1741         /*firm_version,17,68-83*/
1742         int count;
1743
1744         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg);
1745         if (arcmsr_hbb_wait_msgint_ready(acb)) {
1746                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
1747                         miscellaneous data' timeout \n", acb->host->host_no);
1748         }
1749
1750         count = 8;
1751         while (count)
1752         {
1753                 *acb_firm_model = readb(iop_firm_model);
1754                 acb_firm_model++;
1755                 iop_firm_model++;
1756                 count--;
1757         }
1758
1759         count = 16;
1760         while (count)
1761         {
1762                 *acb_firm_version = readb(iop_firm_version);
1763                 acb_firm_version++;
1764                 iop_firm_version++;
1765                 count--;
1766         }
1767
1768         printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n",
1769                         acb->host->host_no,
1770                         acb->firm_version);
1771
1772         lrwbuffer++;
1773         acb->firm_request_len = readl(lrwbuffer++);
1774         /*firm_request_len,1,04-07*/
1775         acb->firm_numbers_queue = readl(lrwbuffer++);
1776         /*firm_numbers_queue,2,08-11*/
1777         acb->firm_sdram_size = readl(lrwbuffer++);
1778         /*firm_sdram_size,3,12-15*/
1779         acb->firm_hd_channels = readl(lrwbuffer);
1780         /*firm_ide_channels,4,16-19*/
1781 }
1782
1783 static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
1784 {
1785         switch (acb->adapter_type) {
1786         case ACB_ADAPTER_TYPE_A: {
1787                 arcmsr_get_hba_config(acb);
1788                 }
1789                 break;
1790
1791         case ACB_ADAPTER_TYPE_B: {
1792                 arcmsr_get_hbb_config(acb);
1793                 }
1794                 break;
1795         }
1796 }
1797
1798 static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
1799         struct CommandControlBlock *poll_ccb)
1800 {
1801         struct MessageUnit_A __iomem *reg = acb->pmuA;
1802         struct CommandControlBlock *ccb;
1803         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
1804
1805         polling_hba_ccb_retry:
1806         poll_count++;
1807         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
1808         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
1809         while (1) {
1810                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
1811                         if (poll_ccb_done)
1812                                 break;
1813                         else {
1814                                 msleep(25);
1815                                 if (poll_count > 100)
1816                                         break;
1817                                 goto polling_hba_ccb_retry;
1818                         }
1819                 }
1820                 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5));
1821                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
1822                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
1823                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
1824                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
1825                                         " poll command abort successfully \n"
1826                                         , acb->host->host_no
1827                                         , ccb->pcmd->device->id
1828                                         , ccb->pcmd->device->lun
1829                                         , ccb);
1830                                 ccb->pcmd->result = DID_ABORT << 16;
1831                                 arcmsr_ccb_complete(ccb, 1);
1832                                 poll_ccb_done = 1;
1833                                 continue;
1834                         }
1835                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
1836                                 " command done ccb = '0x%p'"
1837                                 "ccboutstandingcount = %d \n"
1838                                 , acb->host->host_no
1839                                 , ccb
1840                                 , atomic_read(&acb->ccboutstandingcount));
1841                         continue;
1842                 }
1843                 arcmsr_report_ccb_state(acb, ccb, flag_ccb);
1844         }
1845 }
1846
1847 static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \
1848                                         struct CommandControlBlock *poll_ccb)
1849 {
1850                 struct MessageUnit_B *reg = acb->pmuB;
1851                 struct CommandControlBlock *ccb;
1852                 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
1853                 int index;
1854
1855         polling_hbb_ccb_retry:
1856                 poll_count++;
1857                 /* clear doorbell interrupt */
1858                 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg);
1859                 while (1) {
1860                         index = reg->doneq_index;
1861                         if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
1862                                 if (poll_ccb_done)
1863                                         break;
1864                                 else {
1865                                         msleep(25);
1866                                         if (poll_count > 100)
1867                                                 break;
1868                                         goto polling_hbb_ccb_retry;
1869                                 }
1870                         }
1871                         writel(0, &reg->done_qbuffer[index]);
1872                         index++;
1873                         /*if last index number set it to 0 */
1874                         index %= ARCMSR_MAX_HBB_POSTQUEUE;
1875                         reg->doneq_index = index;
1876                         /* check ifcommand done with no error*/
1877                         ccb = (struct CommandControlBlock *)\
1878       (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1879                         poll_ccb_done = (ccb == poll_ccb) ? 1:0;
1880                         if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
1881                                 if (ccb->startdone == ARCMSR_CCB_ABORTED) {
1882                                         printk(KERN_NOTICE "arcmsr%d: \
1883                 scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n"
1884                                                 ,acb->host->host_no
1885                                                 ,ccb->pcmd->device->id
1886                                                 ,ccb->pcmd->device->lun
1887                                                 ,ccb);
1888                                         ccb->pcmd->result = DID_ABORT << 16;
1889                                         arcmsr_ccb_complete(ccb, 1);
1890                                         continue;
1891                                 }
1892                                 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
1893                                         " command done ccb = '0x%p'"
1894                                         "ccboutstandingcount = %d \n"
1895                                         , acb->host->host_no
1896                                         , ccb
1897                                         , atomic_read(&acb->ccboutstandingcount));
1898                                 continue;
1899                         }
1900                         arcmsr_report_ccb_state(acb, ccb, flag_ccb);
1901                 }       /*drain reply FIFO*/
1902 }
1903
1904 static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \
1905                                         struct CommandControlBlock *poll_ccb)
1906 {
1907         switch (acb->adapter_type) {
1908
1909         case ACB_ADAPTER_TYPE_A: {
1910                 arcmsr_polling_hba_ccbdone(acb,poll_ccb);
1911                 }
1912                 break;
1913
1914         case ACB_ADAPTER_TYPE_B: {
1915                 arcmsr_polling_hbb_ccbdone(acb,poll_ccb);
1916                 }
1917         }
1918 }
1919
1920 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
1921 {
1922         uint32_t cdb_phyaddr, ccb_phyaddr_hi32;
1923         dma_addr_t dma_coherent_handle;
1924         /*
1925         ********************************************************************
1926         ** here we need to tell iop 331 our freeccb.HighPart
1927         ** if freeccb.HighPart is not zero
1928         ********************************************************************
1929         */
1930         dma_coherent_handle = acb->dma_coherent_handle;
1931         cdb_phyaddr = (uint32_t)(dma_coherent_handle);
1932         ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
1933         /*
1934         ***********************************************************************
1935         **    if adapter type B, set window of "post command Q"
1936         ***********************************************************************
1937         */
1938         switch (acb->adapter_type) {
1939
1940         case ACB_ADAPTER_TYPE_A: {
1941                 if (ccb_phyaddr_hi32 != 0) {
1942                         struct MessageUnit_A __iomem *reg = acb->pmuA;
1943                         uint32_t intmask_org;
1944                         intmask_org = arcmsr_disable_outbound_ints(acb);
1945                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
1946                                                 &reg->message_rwbuffer[0]);
1947                         writel(ccb_phyaddr_hi32, &reg->message_rwbuffer[1]);
1948                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
1949                                                         &reg->inbound_msgaddr0);
1950                         if (arcmsr_hba_wait_msgint_ready(acb)) {
1951                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
1952                                 part physical address timeout\n",
1953                                 acb->host->host_no);
1954                                 return 1;
1955                         }
1956                         arcmsr_enable_outbound_ints(acb, intmask_org);
1957                 }
1958                 }
1959                 break;
1960
1961         case ACB_ADAPTER_TYPE_B: {
1962                 unsigned long post_queue_phyaddr;
1963                 uint32_t __iomem *rwbuffer;
1964
1965                 struct MessageUnit_B *reg = acb->pmuB;
1966                 uint32_t intmask_org;
1967                 intmask_org = arcmsr_disable_outbound_ints(acb);
1968                 reg->postq_index = 0;
1969                 reg->doneq_index = 0;
1970                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg);
1971                 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1972                         printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
1973                                 acb->host->host_no);
1974                         return 1;
1975                 }
1976                 post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \
1977                 sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ;
1978                 rwbuffer = reg->msgcode_rwbuffer_reg;
1979                 /* driver "set config" signature */
1980                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
1981                 /* normal should be zero */
1982                 writel(ccb_phyaddr_hi32, rwbuffer++);
1983                 /* postQ size (256 + 8)*4        */
1984                 writel(post_queue_phyaddr, rwbuffer++);
1985                 /* doneQ size (256 + 8)*4        */
1986                 writel(post_queue_phyaddr + 1056, rwbuffer++);
1987                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
1988                 writel(1056, rwbuffer);
1989
1990                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg);
1991                 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1992                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
1993                         timeout \n",acb->host->host_no);
1994                         return 1;
1995                 }
1996
1997                 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg);
1998                 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1999                         printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\
2000                         ,acb->host->host_no);
2001                         return 1;
2002                 }
2003                 arcmsr_enable_outbound_ints(acb, intmask_org);
2004                 }
2005                 break;
2006         }
2007         return 0;
2008 }
2009
2010 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2011 {
2012         uint32_t firmware_state = 0;
2013
2014         switch (acb->adapter_type) {
2015
2016         case ACB_ADAPTER_TYPE_A: {
2017                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2018                 do {
2019                         firmware_state = readl(&reg->outbound_msgaddr1);
2020                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2021                 }
2022                 break;
2023
2024         case ACB_ADAPTER_TYPE_B: {
2025                 struct MessageUnit_B *reg = acb->pmuB;
2026                 do {
2027                         firmware_state = readl(reg->iop2drv_doorbell_reg);
2028                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2029                 }
2030                 break;
2031         }
2032 }
2033
2034 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2035 {
2036         struct MessageUnit_A __iomem *reg = acb->pmuA;
2037         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2038         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2039         if (arcmsr_hba_wait_msgint_ready(acb)) {
2040                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2041                                 rebulid' timeout \n", acb->host->host_no);
2042         }
2043 }
2044
2045 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2046 {
2047         struct MessageUnit_B *reg = acb->pmuB;
2048         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2049         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg);
2050         if (arcmsr_hbb_wait_msgint_ready(acb)) {
2051                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2052                                 rebulid' timeout \n",acb->host->host_no);
2053         }
2054 }
2055
2056 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2057 {
2058         switch (acb->adapter_type) {
2059         case ACB_ADAPTER_TYPE_A:
2060                 arcmsr_start_hba_bgrb(acb);
2061                 break;
2062         case ACB_ADAPTER_TYPE_B:
2063                 arcmsr_start_hbb_bgrb(acb);
2064                 break;
2065         }
2066 }
2067
2068 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2069 {
2070         switch (acb->adapter_type) {
2071         case ACB_ADAPTER_TYPE_A: {
2072                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2073                 uint32_t outbound_doorbell;
2074                 /* empty doorbell Qbuffer if door bell ringed */
2075                 outbound_doorbell = readl(&reg->outbound_doorbell);
2076                 /*clear doorbell interrupt */
2077                 writel(outbound_doorbell, &reg->outbound_doorbell);
2078                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2079                 }
2080                 break;
2081
2082         case ACB_ADAPTER_TYPE_B: {
2083                 struct MessageUnit_B *reg = acb->pmuB;
2084                 /*clear interrupt and message state*/
2085                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg);
2086                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg);
2087                 /* let IOP know data has been read */
2088                 }
2089                 break;
2090         }
2091 }
2092
2093 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2094 {
2095         uint32_t intmask_org;
2096
2097         arcmsr_wait_firmware_ready(acb);
2098         arcmsr_iop_confirm(acb);
2099        /* disable all outbound interrupt */
2100        intmask_org = arcmsr_disable_outbound_ints(acb);
2101         arcmsr_get_firmware_spec(acb);
2102         /*start background rebuild*/
2103         arcmsr_start_adapter_bgrb(acb);
2104         /* empty doorbell Qbuffer if door bell ringed */
2105         arcmsr_clear_doorbell_queue_buffer(acb);
2106         /* enable outbound Post Queue,outbound doorbell Interrupt */
2107         arcmsr_enable_outbound_ints(acb, intmask_org);
2108         acb->acb_flags |= ACB_F_IOP_INITED;
2109 }
2110
2111 static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
2112 {
2113         struct CommandControlBlock *ccb;
2114         uint32_t intmask_org;
2115         int i = 0;
2116
2117         if (atomic_read(&acb->ccboutstandingcount) != 0) {
2118                 /* talk to iop 331 outstanding command aborted */
2119                 arcmsr_abort_allcmd(acb);
2120
2121                 /* wait for 3 sec for all command aborted*/
2122                 ssleep(3);
2123
2124                 /* disable all outbound interrupt */
2125                 intmask_org = arcmsr_disable_outbound_ints(acb);
2126                 /* clear all outbound posted Q */
2127                 arcmsr_done4abort_postqueue(acb);
2128                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2129                         ccb = acb->pccb_pool[i];
2130                         if (ccb->startdone == ARCMSR_CCB_START) {
2131                                 ccb->startdone = ARCMSR_CCB_ABORTED;
2132                                 arcmsr_ccb_complete(ccb, 1);
2133                         }
2134                 }
2135                 /* enable all outbound interrupt */
2136                 arcmsr_enable_outbound_ints(acb, intmask_org);
2137         }
2138 }
2139
2140 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2141 {
2142         struct AdapterControlBlock *acb =
2143                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2144         int i;
2145
2146         acb->num_resets++;
2147         acb->acb_flags |= ACB_F_BUS_RESET;
2148         for (i = 0; i < 400; i++) {
2149                 if (!atomic_read(&acb->ccboutstandingcount))
2150                         break;
2151                 arcmsr_interrupt(acb);/* FIXME: need spinlock */
2152                 msleep(25);
2153         }
2154         arcmsr_iop_reset(acb);
2155         acb->acb_flags &= ~ACB_F_BUS_RESET;
2156         return SUCCESS;
2157 }
2158
2159 static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
2160                 struct CommandControlBlock *ccb)
2161 {
2162         u32 intmask;
2163
2164         ccb->startdone = ARCMSR_CCB_ABORTED;
2165
2166         /*
2167         ** Wait for 3 sec for all command done.
2168         */
2169         ssleep(3);
2170
2171         intmask = arcmsr_disable_outbound_ints(acb);
2172         arcmsr_polling_ccbdone(acb, ccb);
2173         arcmsr_enable_outbound_ints(acb, intmask);
2174 }
2175
2176 static int arcmsr_abort(struct scsi_cmnd *cmd)
2177 {
2178         struct AdapterControlBlock *acb =
2179                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2180         int i = 0;
2181
2182         printk(KERN_NOTICE
2183                 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
2184                 acb->host->host_no, cmd->device->id, cmd->device->lun);
2185         acb->num_aborts++;
2186         /*
2187         ************************************************
2188         ** the all interrupt service routine is locked
2189         ** we need to handle it as soon as possible and exit
2190         ************************************************
2191         */
2192         if (!atomic_read(&acb->ccboutstandingcount))
2193                 return SUCCESS;
2194
2195         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2196                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
2197                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
2198                         arcmsr_abort_one_cmd(acb, ccb);
2199                         break;
2200                 }
2201         }
2202
2203         return SUCCESS;
2204 }
2205
2206 static const char *arcmsr_info(struct Scsi_Host *host)
2207 {
2208         struct AdapterControlBlock *acb =
2209                 (struct AdapterControlBlock *) host->hostdata;
2210         static char buf[256];
2211         char *type;
2212         int raid6 = 1;
2213
2214         switch (acb->pdev->device) {
2215         case PCI_DEVICE_ID_ARECA_1110:
2216         case PCI_DEVICE_ID_ARECA_1200:
2217         case PCI_DEVICE_ID_ARECA_1202:
2218         case PCI_DEVICE_ID_ARECA_1210:
2219                 raid6 = 0;
2220                 /*FALLTHRU*/
2221         case PCI_DEVICE_ID_ARECA_1120:
2222         case PCI_DEVICE_ID_ARECA_1130:
2223         case PCI_DEVICE_ID_ARECA_1160:
2224         case PCI_DEVICE_ID_ARECA_1170:
2225         case PCI_DEVICE_ID_ARECA_1201:
2226         case PCI_DEVICE_ID_ARECA_1220:
2227         case PCI_DEVICE_ID_ARECA_1230:
2228         case PCI_DEVICE_ID_ARECA_1260:
2229         case PCI_DEVICE_ID_ARECA_1270:
2230         case PCI_DEVICE_ID_ARECA_1280:
2231                 type = "SATA";
2232                 break;
2233         case PCI_DEVICE_ID_ARECA_1380:
2234         case PCI_DEVICE_ID_ARECA_1381:
2235         case PCI_DEVICE_ID_ARECA_1680:
2236         case PCI_DEVICE_ID_ARECA_1681:
2237                 type = "SAS";
2238                 break;
2239         default:
2240                 type = "X-TYPE";
2241                 break;
2242         }
2243         sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
2244                         type, raid6 ? "( RAID6 capable)" : "",
2245                         ARCMSR_DRIVER_VERSION);
2246         return buf;
2247 }
2248 #ifdef CONFIG_SCSI_ARCMSR_AER
2249 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev)
2250 {
2251         struct Scsi_Host *host = pci_get_drvdata(pdev);
2252         struct AdapterControlBlock *acb =
2253                 (struct AdapterControlBlock *) host->hostdata;
2254         uint32_t intmask_org;
2255         int i, j;
2256
2257         if (pci_enable_device(pdev)) {
2258                 return PCI_ERS_RESULT_DISCONNECT;
2259         }
2260         pci_set_master(pdev);
2261         intmask_org = arcmsr_disable_outbound_ints(acb);
2262         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
2263                            ACB_F_MESSAGE_RQBUFFER_CLEARED |
2264                            ACB_F_MESSAGE_WQBUFFER_READED);
2265         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
2266         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
2267                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
2268                         acb->devstate[i][j] = ARECA_RAID_GONE;
2269
2270         arcmsr_wait_firmware_ready(acb);
2271         arcmsr_iop_confirm(acb);
2272        /* disable all outbound interrupt */
2273         arcmsr_get_firmware_spec(acb);
2274         /*start background rebuild*/
2275         arcmsr_start_adapter_bgrb(acb);
2276         /* empty doorbell Qbuffer if door bell ringed */
2277         arcmsr_clear_doorbell_queue_buffer(acb);
2278         /* enable outbound Post Queue,outbound doorbell Interrupt */
2279         arcmsr_enable_outbound_ints(acb, intmask_org);
2280         acb->acb_flags |= ACB_F_IOP_INITED;
2281
2282         pci_enable_pcie_error_reporting(pdev);
2283         return PCI_ERS_RESULT_RECOVERED;
2284 }
2285
2286 static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev)
2287 {
2288         struct Scsi_Host *host = pci_get_drvdata(pdev);
2289         struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata;
2290         struct CommandControlBlock *ccb;
2291         uint32_t intmask_org;
2292         int i = 0;
2293
2294         if (atomic_read(&acb->ccboutstandingcount) != 0) {
2295                 /* talk to iop 331 outstanding command aborted */
2296                 arcmsr_abort_allcmd(acb);
2297                 /* wait for 3 sec for all command aborted*/
2298                 ssleep(3);
2299                 /* disable all outbound interrupt */
2300                 intmask_org = arcmsr_disable_outbound_ints(acb);
2301                 /* clear all outbound posted Q */
2302                 arcmsr_done4abort_postqueue(acb);
2303                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2304                         ccb = acb->pccb_pool[i];
2305                         if (ccb->startdone == ARCMSR_CCB_START) {
2306                                 ccb->startdone = ARCMSR_CCB_ABORTED;
2307                                 arcmsr_ccb_complete(ccb, 1);
2308                         }
2309                 }
2310                 /* enable all outbound interrupt */
2311                 arcmsr_enable_outbound_ints(acb, intmask_org);
2312         }
2313         pci_disable_device(pdev);
2314 }
2315
2316 static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev)
2317 {
2318                         struct Scsi_Host *host = pci_get_drvdata(pdev);
2319                         struct AdapterControlBlock *acb = \
2320                                 (struct AdapterControlBlock *)host->hostdata;
2321
2322                         arcmsr_stop_adapter_bgrb(acb);
2323                         arcmsr_flush_adapter_cache(acb);
2324 }
2325
2326 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
2327                                                 pci_channel_state_t state)
2328 {
2329         switch (state) {
2330         case pci_channel_io_frozen:
2331                         arcmsr_pci_ers_need_reset_forepart(pdev);
2332                         return PCI_ERS_RESULT_NEED_RESET;
2333         case pci_channel_io_perm_failure:
2334                         arcmsr_pci_ers_disconnect_forepart(pdev);
2335                         return PCI_ERS_RESULT_DISCONNECT;
2336                         break;
2337         default:
2338                         return PCI_ERS_RESULT_NEED_RESET;
2339           }
2340 }
2341 #endif