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: erich@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 <asm/dma.h>
  61 #include <asm/io.h>
  62 #include <asm/system.h>
  63 #include <asm/uaccess.h>
  64 #include <scsi/scsi_host.h>
  65 #include <scsi/scsi.h>
  66 #include <scsi/scsi_cmnd.h>
  67 #include <scsi/scsi_tcq.h>
  68 #include <scsi/scsi_device.h>
  69 #include <scsi/scsi_transport.h>
  70 #include <scsi/scsicam.h>
  71 #include "arcmsr.h"
  72
  73 MODULE_AUTHOR("Erich Chen <erich@areca.com.tw>");
  74 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx) SATA RAID HOST Adapter");
  75 MODULE_LICENSE("Dual BSD/GPL");
  76 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
  77
  78 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd);
  79 static int arcmsr_abort(struct scsi_cmnd *);
  80 static int arcmsr_bus_reset(struct scsi_cmnd *);
  81 static int arcmsr_bios_param(struct scsi_device *sdev,
  82                                 struct block_device *bdev, sector_t capacity, int *info);
  83 static int arcmsr_queue_command(struct scsi_cmnd * cmd,
  84                                 void (*done) (struct scsi_cmnd *));
  85 static int arcmsr_probe(struct pci_dev *pdev,
  86                                 const struct pci_device_id *id);
  87 static void arcmsr_remove(struct pci_dev *pdev);
  88 static void arcmsr_shutdown(struct pci_dev *pdev);
  89 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
  90 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
  91 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
  92 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb);
  93 static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb);
  94 static const char *arcmsr_info(struct Scsi_Host *);
  95 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
  96
  97 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
  98 {
  99         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
 100                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
 101         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 102         return queue_depth;
 103 }
 104
 105 static struct scsi_host_template arcmsr_scsi_host_template = {
 106         .module                 = THIS_MODULE,
 107         .name                   = "ARCMSR ARECA SATA RAID HOST Adapter" ARCMSR_DRIVER_VERSION,
 108         .info                   = arcmsr_info,
 109         .queuecommand           = arcmsr_queue_command,
 110         .eh_abort_handler       = arcmsr_abort,
 111         .eh_bus_reset_handler   = arcmsr_bus_reset,
 112         .bios_param             = arcmsr_bios_param,
 113         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
 114         .can_queue              = ARCMSR_MAX_OUTSTANDING_CMD,
 115         .this_id                = ARCMSR_SCSI_INITIATOR_ID,
 116         .sg_tablesize           = ARCMSR_MAX_SG_ENTRIES,
 117         .max_sectors            = ARCMSR_MAX_XFER_SECTORS,
 118         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
 119         .use_clustering         = ENABLE_CLUSTERING,
 120         .shost_attrs            = arcmsr_host_attrs,
 121 };
 122
 123 static struct pci_device_id arcmsr_device_id_table[] = {
 124         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 125         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 126         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 127         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 128         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
 129         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 130         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 131         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
 132         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
 133         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
 134         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
 135         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
 136         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
 137         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
 138         {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
 139         {0, 0}, /* Terminating entry */
 140 };
 141 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 142 static struct pci_driver arcmsr_pci_driver = {
 143         .name                   = "arcmsr",
 144         .id_table               = arcmsr_device_id_table,
 145         .probe                  = arcmsr_probe,
 146         .remove                 = arcmsr_remove,
 147         .shutdown               = arcmsr_shutdown
 148 };
 149
 150 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id,
 151         struct pt_regs *regs)
 152 {
 153         irqreturn_t handle_state;
 154         struct AdapterControlBlock *acb;
 155         unsigned long flags;
 156
 157         acb = (struct AdapterControlBlock *)dev_id;
 158
 159         spin_lock_irqsave(acb->host->host_lock, flags);
 160         handle_state = arcmsr_interrupt(acb);
 161         spin_unlock_irqrestore(acb->host->host_lock, flags);
 162         return handle_state;
 163 }
 164
 165 static int arcmsr_bios_param(struct scsi_device *sdev,
 166                 struct block_device *bdev, sector_t capacity, int *geom)
 167 {
 168         int ret, heads, sectors, cylinders, total_capacity;
 169         unsigned char *buffer;/* return copy of block device's partition table */
 170
 171         buffer = scsi_bios_ptable(bdev);
 172         if (buffer) {
 173                 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
 174                 kfree(buffer);
 175                 if (ret != -1)
 176                         return ret;
 177         }
 178         total_capacity = capacity;
 179         heads = 64;
 180         sectors = 32;
 181         cylinders = total_capacity / (heads * sectors);
 182         if (cylinders > 1024) {
 183                 heads = 255;
 184                 sectors = 63;
 185                 cylinders = total_capacity / (heads * sectors);
 186         }
 187         geom[0] = heads;
 188         geom[1] = sectors;
 189         geom[2] = cylinders;
 190         return 0;
 191 }
 192
 193 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 194 {
 195         struct pci_dev *pdev = acb->pdev;
 196         struct MessageUnit __iomem *reg = acb->pmu;
 197         u32 ccb_phyaddr_hi32;
 198         void *dma_coherent;
 199         dma_addr_t dma_coherent_handle, dma_addr;
 200         struct CommandControlBlock *ccb_tmp;
 201         int i, j;
 202
 203         dma_coherent = dma_alloc_coherent(&pdev->dev,
 204                         ARCMSR_MAX_FREECCB_NUM *
 205                         sizeof (struct CommandControlBlock) + 0x20,
 206                         &dma_coherent_handle, GFP_KERNEL);
 207         if (!dma_coherent)
 208                 return -ENOMEM;
 209
 210         acb->dma_coherent = dma_coherent;
 211         acb->dma_coherent_handle = dma_coherent_handle;
 212
 213         if (((unsigned long)dma_coherent & 0x1F)) {
 214                 dma_coherent = dma_coherent +
 215                         (0x20 - ((unsigned long)dma_coherent & 0x1F));
 216                 dma_coherent_handle = dma_coherent_handle +
 217                         (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
 218         }
 219
 220         dma_addr = dma_coherent_handle;
 221         ccb_tmp = (struct CommandControlBlock *)dma_coherent;
 222         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
 223                 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
 224                 ccb_tmp->acb = acb;
 225                 acb->pccb_pool[i] = ccb_tmp;
 226                 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
 227                 dma_addr = dma_addr + sizeof (struct CommandControlBlock);
 228                 ccb_tmp++;
 229         }
 230
 231         acb->vir2phy_offset = (unsigned long)ccb_tmp -
 232                               (unsigned long)dma_addr;
 233         for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 234                 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 235                         acb->devstate[i][j] = ARECA_RAID_GOOD;
 236
 237         /*
 238         ** here we need to tell iop 331 our ccb_tmp.HighPart
 239         ** if ccb_tmp.HighPart is not zero
 240         */
 241         ccb_phyaddr_hi32 = (uint32_t) ((dma_coherent_handle >> 16) >> 16);
 242         if (ccb_phyaddr_hi32 != 0) {
 243                 writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->message_rwbuffer[0]);
 244                 writel(ccb_phyaddr_hi32, &reg->message_rwbuffer[1]);
 245                 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
 246                 if (arcmsr_wait_msgint_ready(acb))
 247                         printk(KERN_NOTICE "arcmsr%d: "
 248                                "'set ccb high part physical address' timeout\n",
 249                                 acb->host->host_no);
 250         }
 251
 252         writel(readl(&reg->outbound_intmask) |
 253                         ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
 254                &reg->outbound_intmask);
 255         return 0;
 256 }
 257
 258 static int arcmsr_probe(struct pci_dev *pdev,
 259         const struct pci_device_id *id)
 260 {
 261         struct Scsi_Host *host;
 262         struct AdapterControlBlock *acb;
 263         uint8_t bus, dev_fun;
 264         int error;
 265
 266         error = pci_enable_device(pdev);
 267         if (error)
 268                 goto out;
 269         pci_set_master(pdev);
 270
 271         host = scsi_host_alloc(&arcmsr_scsi_host_template,
 272                         sizeof(struct AdapterControlBlock));
 273         if (!host) {
 274                 error = -ENOMEM;
 275                 goto out_disable_device;
 276         }
 277         acb = (struct AdapterControlBlock *)host->hostdata;
 278         memset(acb, 0, sizeof (struct AdapterControlBlock));
 279
 280         error = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
 281         if (error) {
 282                 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 283                 if (error) {
 284                         printk(KERN_WARNING
 285                                "scsi%d: No suitable DMA mask available\n",
 286                                host->host_no);
 287                         goto out_host_put;
 288                 }
 289         }
 290         bus = pdev->bus->number;
 291         dev_fun = pdev->devfn;
 292         acb->host = host;
 293         acb->pdev = pdev;
 294         host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
 295         host->max_lun = ARCMSR_MAX_TARGETLUN;
 296         host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
 297         host->max_cmd_len = 16;    /*this is issue of 64bit LBA, over 2T byte*/
 298         host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
 299         host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
 300         host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
 301         host->this_id = ARCMSR_SCSI_INITIATOR_ID;
 302         host->unique_id = (bus << 8) | dev_fun;
 303         host->irq = pdev->irq;
 304         error = pci_request_regions(pdev, "arcmsr");
 305         if (error)
 306                 goto out_host_put;
 307
 308         acb->pmu = ioremap(pci_resource_start(pdev, 0),
 309                            pci_resource_len(pdev, 0));
 310         if (!acb->pmu) {
 311                 printk(KERN_NOTICE "arcmsr%d: memory"
 312                         " mapping region fail \n", acb->host->host_no);
 313                 goto out_release_regions;
 314         }
 315         acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 316                            ACB_F_MESSAGE_RQBUFFER_CLEARED |
 317                            ACB_F_MESSAGE_WQBUFFER_READED);
 318         acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 319         INIT_LIST_HEAD(&acb->ccb_free_list);
 320
 321         error = arcmsr_alloc_ccb_pool(acb);
 322         if (error)
 323                 goto out_iounmap;
 324
 325         error = request_irq(pdev->irq, arcmsr_do_interrupt,
 326                         SA_INTERRUPT | SA_SHIRQ, "arcmsr", acb);
 327         if (error)
 328                 goto out_free_ccb_pool;
 329
 330         arcmsr_iop_init(acb);
 331         pci_set_drvdata(pdev, host);
 332
 333         error = scsi_add_host(host, &pdev->dev);
 334         if (error)
 335                 goto out_free_irq;
 336
 337         error = arcmsr_alloc_sysfs_attr(acb);
 338         if (error)
 339                 goto out_free_sysfs;
 340
 341         scsi_scan_host(host);
 342         return 0;
 343  out_free_sysfs:
 344  out_free_irq:
 345         free_irq(pdev->irq, acb);
 346  out_free_ccb_pool:
 347         arcmsr_free_ccb_pool(acb);
 348  out_iounmap:
 349         iounmap(acb->pmu);
 350  out_release_regions:
 351         pci_release_regions(pdev);
 352  out_host_put:
 353         scsi_host_put(host);
 354  out_disable_device:
 355         pci_disable_device(pdev);
 356  out:
 357         return error;
 358 }
 359
 360 static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 361 {
 362         struct MessageUnit __iomem *reg = acb->pmu;
 363
 364         writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
 365         if (arcmsr_wait_msgint_ready(acb))
 366                 printk(KERN_NOTICE
 367                         "arcmsr%d: wait 'abort all outstanding command' timeout \n"
 368                         , acb->host->host_no);
 369 }
 370
 371 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 372 {
 373         struct AdapterControlBlock *acb = ccb->acb;
 374         struct scsi_cmnd *pcmd = ccb->pcmd;
 375
 376         if (pcmd->use_sg != 0) {
 377                 struct scatterlist *sl;
 378
 379                 sl = (struct scatterlist *)pcmd->request_buffer;
 380                 pci_unmap_sg(acb->pdev, sl, pcmd->use_sg, pcmd->sc_data_direction);
 381         }
 382         else if (pcmd->request_bufflen != 0)
 383                 pci_unmap_single(acb->pdev,
 384                         pcmd->SCp.dma_handle,
 385                         pcmd->request_bufflen, pcmd->sc_data_direction);
 386 }
 387
 388 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
 389 {
 390         struct AdapterControlBlock *acb = ccb->acb;
 391         struct scsi_cmnd *pcmd = ccb->pcmd;
 392
 393         arcmsr_pci_unmap_dma(ccb);
 394         if (stand_flag == 1)
 395                 atomic_dec(&acb->ccboutstandingcount);
 396         ccb->startdone = ARCMSR_CCB_DONE;
 397         ccb->ccb_flags = 0;
 398         list_add_tail(&ccb->list, &acb->ccb_free_list);
 399         pcmd->scsi_done(pcmd);
 400 }
 401
 402 static void arcmsr_remove(struct pci_dev *pdev)
 403 {
 404         struct Scsi_Host *host = pci_get_drvdata(pdev);
 405         struct AdapterControlBlock *acb =
 406                 (struct AdapterControlBlock *) host->hostdata;
 407         struct MessageUnit __iomem *reg = acb->pmu;
 408         int poll_count = 0;
 409
 410         arcmsr_free_sysfs_attr(acb);
 411         scsi_remove_host(host);
 412         arcmsr_stop_adapter_bgrb(acb);
 413         arcmsr_flush_adapter_cache(acb);
 414         writel(readl(&reg->outbound_intmask) |
 415                 ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
 416                 &reg->outbound_intmask);
 417         acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
 418         acb->acb_flags &= ~ACB_F_IOP_INITED;
 419
 420         for (poll_count = 0; poll_count < 256; poll_count++) {
 421                 if (!atomic_read(&acb->ccboutstandingcount))
 422                         break;
 423                 arcmsr_interrupt(acb);
 424                 msleep(25);
 425         }
 426
 427         if (atomic_read(&acb->ccboutstandingcount)) {
 428                 int i;
 429
 430                 arcmsr_abort_allcmd(acb);
 431                 for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
 432                         readl(&reg->outbound_queueport);
 433                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
 434                         struct CommandControlBlock *ccb = acb->pccb_pool[i];
 435                         if (ccb->startdone == ARCMSR_CCB_START) {
 436                                 ccb->startdone = ARCMSR_CCB_ABORTED;
 437                                 ccb->pcmd->result = DID_ABORT << 16;
 438                                 arcmsr_ccb_complete(ccb, 1);
 439                         }
 440                 }
 441         }
 442
 443         free_irq(pdev->irq, acb);
 444         iounmap(acb->pmu);
 445         arcmsr_free_ccb_pool(acb);
 446         pci_release_regions(pdev);
 447
 448         scsi_host_put(host);
 449
 450         pci_disable_device(pdev);
 451         pci_set_drvdata(pdev, NULL);
 452 }
 453
 454 static void arcmsr_shutdown(struct pci_dev *pdev)
 455 {
 456         struct Scsi_Host *host = pci_get_drvdata(pdev);
 457         struct AdapterControlBlock *acb =
 458                 (struct AdapterControlBlock *)host->hostdata;
 459
 460         arcmsr_stop_adapter_bgrb(acb);
 461         arcmsr_flush_adapter_cache(acb);
 462 }
 463
 464 static int arcmsr_module_init(void)
 465 {
 466         int error = 0;
 467
 468         error = pci_register_driver(&arcmsr_pci_driver);
 469         return error;
 470 }
 471
 472 static void arcmsr_module_exit(void)
 473 {
 474         pci_unregister_driver(&arcmsr_pci_driver);
 475 }
 476 module_init(arcmsr_module_init);
 477 module_exit(arcmsr_module_exit);
 478
 479 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 480 {
 481         struct MessageUnit __iomem *reg = acb->pmu;
 482         u32 orig_mask = readl(&reg->outbound_intmask);
 483
 484         writel(orig_mask | ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
 485                         &reg->outbound_intmask);
 486         return orig_mask;
 487 }
 488
 489 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
 490                 u32 orig_mask)
 491 {
 492         struct MessageUnit __iomem *reg = acb->pmu;
 493         u32 mask;
 494
 495         mask = orig_mask & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
 496                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
 497         writel(mask, &reg->outbound_intmask);
 498 }
 499
 500 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 501 {
 502         struct MessageUnit __iomem *reg=acb->pmu;
 503
 504         writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 505         if (arcmsr_wait_msgint_ready(acb))
 506                 printk(KERN_NOTICE
 507                         "arcmsr%d: wait 'flush adapter cache' timeout \n"
 508                         , acb->host->host_no);
 509 }
 510
 511 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
 512 {
 513         struct scsi_cmnd *pcmd = ccb->pcmd;
 514         struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
 515
 516         pcmd->result = DID_OK << 16;
 517         if (sensebuffer) {
 518                 int sense_data_length =
 519                         sizeof (struct SENSE_DATA) < sizeof (pcmd->sense_buffer)
 520                         ? sizeof (struct SENSE_DATA) : sizeof (pcmd->sense_buffer);
 521                 memset(sensebuffer, 0, sizeof (pcmd->sense_buffer));
 522                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
 523                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
 524                 sensebuffer->Valid = 1;
 525         }
 526 }
 527
 528 static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb)
 529 {
 530         struct MessageUnit __iomem *reg = acb->pmu;
 531         uint32_t Index;
 532         uint8_t Retries = 0x00;
 533
 534         do {
 535                 for (Index = 0; Index < 100; Index++) {
 536                         if (readl(&reg->outbound_intstatus)
 537                                 & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
 538                                 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT
 539                                         , &reg->outbound_intstatus);
 540                                 return 0x00;
 541                         }
 542                         msleep_interruptible(10);
 543                 }/*max 1 seconds*/
 544         } while (Retries++ < 20);/*max 20 sec*/
 545         return 0xff;
 546 }
 547
 548 static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
 549         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
 550 {
 551         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
 552         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
 553         uint32_t address_lo, address_hi;
 554         int arccdbsize = 0x30;
 555
 556         ccb->pcmd = pcmd;
 557         memset(arcmsr_cdb, 0, sizeof (struct ARCMSR_CDB));
 558         arcmsr_cdb->Bus = 0;
 559         arcmsr_cdb->TargetID = pcmd->device->id;
 560         arcmsr_cdb->LUN = pcmd->device->lun;
 561         arcmsr_cdb->Function = 1;
 562         arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
 563         arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
 564         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
 565         if (pcmd->use_sg) {
 566                 int length, sgcount, i, cdb_sgcount = 0;
 567                 struct scatterlist *sl;
 568
 569                 /* Get Scatter Gather List from scsiport. */
 570                 sl = (struct scatterlist *) pcmd->request_buffer;
 571                 sgcount = pci_map_sg(acb->pdev, sl, pcmd->use_sg,
 572                                 pcmd->sc_data_direction);
 573                 /* map stor port SG list to our iop SG List. */
 574                 for (i = 0; i < sgcount; i++) {
 575                         /* Get the physical address of the current data pointer */
 576                         length = cpu_to_le32(sg_dma_len(sl));
 577                         address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sl)));
 578                         address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sl)));
 579                         if (address_hi == 0) {
 580                                 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
 581
 582                                 pdma_sg->address = address_lo;
 583                                 pdma_sg->length = length;
 584                                 psge += sizeof (struct SG32ENTRY);
 585                                 arccdbsize += sizeof (struct SG32ENTRY);
 586                         } else {
 587                                 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
 588
 589                                 pdma_sg->addresshigh = address_hi;
 590                                 pdma_sg->address = address_lo;
 591                                 pdma_sg->length = length|IS_SG64_ADDR;
 592                                 psge += sizeof (struct SG64ENTRY);
 593                                 arccdbsize += sizeof (struct SG64ENTRY);
 594                         }
 595                         sl++;
 596                         cdb_sgcount++;
 597                 }
 598                 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
 599                 arcmsr_cdb->DataLength = pcmd->request_bufflen;
 600                 if ( arccdbsize > 256)
 601                         arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
 602         } else if (pcmd->request_bufflen) {
 603                 dma_addr_t dma_addr;
 604                 dma_addr = pci_map_single(acb->pdev, pcmd->request_buffer,
 605                                 pcmd->request_bufflen, pcmd->sc_data_direction);
 606                 pcmd->SCp.dma_handle = dma_addr;
 607                 address_lo = cpu_to_le32(dma_addr_lo32(dma_addr));
 608                 address_hi = cpu_to_le32(dma_addr_hi32(dma_addr));
 609                 if (address_hi == 0) {
 610                         struct  SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
 611                         pdma_sg->address = address_lo;
 612                         pdma_sg->length = pcmd->request_bufflen;
 613                 } else {
 614                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
 615                         pdma_sg->addresshigh = address_hi;
 616                         pdma_sg->address = address_lo;
 617                         pdma_sg->length = pcmd->request_bufflen|IS_SG64_ADDR;
 618                 }
 619                 arcmsr_cdb->sgcount = 1;
 620                 arcmsr_cdb->DataLength = pcmd->request_bufflen;
 621         }
 622         if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
 623                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
 624                 ccb->ccb_flags |= CCB_FLAG_WRITE;
 625         }
 626 }
 627
 628 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
 629 {
 630         struct MessageUnit __iomem *reg = acb->pmu;
 631         uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
 632         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
 633
 634         atomic_inc(&acb->ccboutstandingcount);
 635         ccb->startdone = ARCMSR_CCB_START;
 636         if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
 637                 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
 638                         &reg->inbound_queueport);
 639         else
 640                 writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
 641 }
 642
 643 void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb)
 644 {
 645         struct MessageUnit __iomem *reg = acb->pmu;
 646         struct QBUFFER __iomem *pwbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
 647         uint8_t __iomem *iop_data = (uint8_t __iomem *) pwbuffer->data;
 648         int32_t allxfer_len = 0;
 649
 650         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
 651                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
 652                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
 653                         && (allxfer_len < 124)) {
 654                         writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
 655                         acb->wqbuf_firstindex++;
 656                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
 657                         iop_data++;
 658                         allxfer_len++;
 659                 }
 660                 writel(allxfer_len, &pwbuffer->data_len);
 661                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK
 662                         , &reg->inbound_doorbell);
 663         }
 664 }
 665
 666 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
 667 {
 668         struct MessageUnit __iomem *reg = acb->pmu;
 669
 670         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
 671         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
 672         if (arcmsr_wait_msgint_ready(acb))
 673                 printk(KERN_NOTICE
 674                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
 675                         , acb->host->host_no);
 676 }
 677
 678 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
 679 {
 680         dma_free_coherent(&acb->pdev->dev,
 681                 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
 682                 acb->dma_coherent,
 683                 acb->dma_coherent_handle);
 684 }
 685
 686 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
 687 {
 688         struct MessageUnit __iomem *reg = acb->pmu;
 689         struct CommandControlBlock *ccb;
 690         uint32_t flag_ccb, outbound_intstatus, outbound_doorbell;
 691
 692         outbound_intstatus = readl(&reg->outbound_intstatus)
 693                 & acb->outbound_int_enable;
 694         writel(outbound_intstatus, &reg->outbound_intstatus);
 695         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
 696                 outbound_doorbell = readl(&reg->outbound_doorbell);
 697                 writel(outbound_doorbell, &reg->outbound_doorbell);
 698                 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
 699                         struct QBUFFER __iomem * prbuffer =
 700                                 (struct QBUFFER __iomem *) &reg->message_rbuffer;
 701                         uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
 702                         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
 703
 704                         rqbuf_lastindex = acb->rqbuf_lastindex;
 705                         rqbuf_firstindex = acb->rqbuf_firstindex;
 706                         iop_len = readl(&prbuffer->data_len);
 707                         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1)
 708                                         &(ARCMSR_MAX_QBUFFER - 1);
 709                         if (my_empty_len >= iop_len) {
 710                                 while (iop_len > 0) {
 711                                         acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
 712                                         acb->rqbuf_lastindex++;
 713                                         acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
 714                                         iop_data++;
 715                                         iop_len--;
 716                                 }
 717                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
 718                                         &reg->inbound_doorbell);
 719                         } else
 720                                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
 721                 }
 722                 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
 723                         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
 724                         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
 725                                 struct QBUFFER __iomem * pwbuffer =
 726                                                 (struct QBUFFER __iomem *) &reg->message_wbuffer;
 727                                 uint8_t __iomem * iop_data = (uint8_t __iomem *) pwbuffer->data;
 728                                 int32_t allxfer_len = 0;
 729
 730                                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
 731                                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
 732                                         && (allxfer_len < 124)) {
 733                                         writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
 734                                         acb->wqbuf_firstindex++;
 735                                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
 736                                         iop_data++;
 737                                         allxfer_len++;
 738                                 }
 739                                 writel(allxfer_len, &pwbuffer->data_len);
 740                                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK,
 741                                         &reg->inbound_doorbell);
 742                         }
 743                         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
 744                                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
 745                 }
 746         }
 747         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
 748                 int id, lun;
 749                 /*
 750                 ****************************************************************
 751                 **               areca cdb command done
 752                 ****************************************************************
 753                 */
 754                 while (1) {
 755                         if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF)
 756                                 break;/*chip FIFO no ccb for completion already*/
 757                         /* check if command done with no error*/
 758                         ccb = (struct CommandControlBlock *)(acb->vir2phy_offset +
 759                                 (flag_ccb << 5));
 760                         if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
 761                                 if (ccb->startdone == ARCMSR_CCB_ABORTED) {
 762                                         struct scsi_cmnd *abortcmd=ccb->pcmd;
 763                                         if (abortcmd) {
 764                                         abortcmd->result |= DID_ABORT >> 16;
 765                                         arcmsr_ccb_complete(ccb, 1);
 766                                         printk(KERN_NOTICE
 767                                                 "arcmsr%d: ccb='0x%p' isr got aborted command \n"
 768                                                 , acb->host->host_no, ccb);
 769                                         }
 770                                         continue;
 771                                 }
 772                                 printk(KERN_NOTICE
 773                                         "arcmsr%d: isr get an illegal ccb command done acb='0x%p'"
 774                                         "ccb='0x%p' ccbacb='0x%p' startdone = 0x%x"
 775                                         " ccboutstandingcount=%d \n"
 776                                         , acb->host->host_no
 777                                         , acb
 778                                         , ccb
 779                                         , ccb->acb
 780                                         , ccb->startdone
 781                                         , atomic_read(&acb->ccboutstandingcount));
 782                                 continue;
 783                         }
 784                         id = ccb->pcmd->device->id;
 785                         lun = ccb->pcmd->device->lun;
 786                         if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
 787                                 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
 788                                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
 789                                 ccb->pcmd->result = DID_OK << 16;
 790                                 arcmsr_ccb_complete(ccb, 1);
 791                         } else {
 792                                 switch(ccb->arcmsr_cdb.DeviceStatus) {
 793                                 case ARCMSR_DEV_SELECT_TIMEOUT: {
 794                                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 795                                                 ccb->pcmd->result = DID_TIME_OUT << 16;
 796                                                 arcmsr_ccb_complete(ccb, 1);
 797                                         }
 798                                         break;
 799                                 case ARCMSR_DEV_ABORTED:
 800                                 case ARCMSR_DEV_INIT_FAIL: {
 801                                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 802                                                 ccb->pcmd->result = DID_BAD_TARGET << 16;
 803                                                 arcmsr_ccb_complete(ccb, 1);
 804                                         }
 805                                         break;
 806                                 case ARCMSR_DEV_CHECK_CONDITION: {
 807                                                 acb->devstate[id][lun] = ARECA_RAID_GOOD;
 808                                                 arcmsr_report_sense_info(ccb);
 809                                                 arcmsr_ccb_complete(ccb, 1);
 810                                         }
 811                                         break;
 812                                 default:
 813                                         printk(KERN_NOTICE
 814                                                 "arcmsr%d: scsi id=%d lun=%d"
 815                                                 " isr get command error done,"
 816                                                 "but got unknown DeviceStatus = 0x%x \n"
 817                                                 , acb->host->host_no
 818                                                 , id
 819                                                 , lun
 820                                                 , ccb->arcmsr_cdb.DeviceStatus);
 821                                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
 822                                                 ccb->pcmd->result = DID_NO_CONNECT << 16;
 823                                                 arcmsr_ccb_complete(ccb, 1);
 824                                         break;
 825                                 }
 826                         }
 827                 }/*drain reply FIFO*/
 828         }
 829         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
 830                 return IRQ_NONE;
 831         return IRQ_HANDLED;
 832 }
 833
 834 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
 835 {
 836         if (acb) {
 837                 /* stop adapter background rebuild */
 838                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
 839                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
 840                         arcmsr_stop_adapter_bgrb(acb);
 841                         arcmsr_flush_adapter_cache(acb);
 842                 }
 843         }
 844 }
 845
 846 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd)
 847 {
 848         struct MessageUnit __iomem *reg = acb->pmu;
 849         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
 850         int retvalue = 0, transfer_len = 0;
 851         char *buffer;
 852         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
 853                                                 (uint32_t ) cmd->cmnd[6] << 16 |
 854                                                 (uint32_t ) cmd->cmnd[7] << 8  |
 855                                                 (uint32_t ) cmd->cmnd[8];
 856                                         /* 4 bytes: Areca io control code */
 857         if (cmd->use_sg) {
 858                 struct scatterlist *sg = (struct scatterlist *)cmd->request_buffer;
 859
 860                 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
 861                 if (cmd->use_sg > 1) {
 862                         retvalue = ARCMSR_MESSAGE_FAIL;
 863                         goto message_out;
 864                 }
 865                 transfer_len += sg->length;
 866         } else {
 867                 buffer = cmd->request_buffer;
 868                 transfer_len = cmd->request_bufflen;
 869         }
 870         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
 871                 retvalue = ARCMSR_MESSAGE_FAIL;
 872                 goto message_out;
 873         }
 874         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
 875         switch(controlcode) {
 876         case ARCMSR_MESSAGE_READ_RQBUFFER: {
 877                         unsigned long *ver_addr;
 878                         dma_addr_t buf_handle;
 879                         uint8_t *pQbuffer, *ptmpQbuffer;
 880                         int32_t allxfer_len = 0;
 881
 882                         ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
 883                         if (!ver_addr) {
 884                                 retvalue = ARCMSR_MESSAGE_FAIL;
 885                                 goto message_out;
 886                         }
 887                         ptmpQbuffer = (uint8_t *) ver_addr;
 888                         while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
 889                                 && (allxfer_len < 1031)) {
 890                                 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
 891                                 memcpy(ptmpQbuffer, pQbuffer, 1);
 892                                 acb->rqbuf_firstindex++;
 893                                 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
 894                                 ptmpQbuffer++;
 895                                 allxfer_len++;
 896                         }
 897                         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
 898                                 struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
 899                                                         &reg->message_rbuffer;
 900                                 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
 901                                 int32_t iop_len;
 902
 903                                 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
 904                                 iop_len = readl(&prbuffer->data_len);
 905                                 while (iop_len > 0) {
 906                                         acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
 907                                         acb->rqbuf_lastindex++;
 908                                         acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
 909                                         iop_data++;
 910                                         iop_len--;
 911                                 }
 912                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
 913                                                 &reg->inbound_doorbell);
 914                         }
 915                         memcpy(pcmdmessagefld->messagedatabuffer,
 916                                 (uint8_t *)ver_addr, allxfer_len);
 917                         pcmdmessagefld->cmdmessage.Length = allxfer_len;
 918                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
 919                         pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
 920                 }
 921                 break;
 922         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
 923                         unsigned long *ver_addr;
 924                         dma_addr_t buf_handle;
 925                         int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
 926                         uint8_t *pQbuffer, *ptmpuserbuffer;
 927
 928                         ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
 929                         if (!ver_addr) {
 930                                 retvalue = ARCMSR_MESSAGE_FAIL;
 931                                 goto message_out;
 932                         }
 933                         ptmpuserbuffer = (uint8_t *)ver_addr;
 934                         user_len = pcmdmessagefld->cmdmessage.Length;
 935                         memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
 936                         wqbuf_lastindex = acb->wqbuf_lastindex;
 937                         wqbuf_firstindex = acb->wqbuf_firstindex;
 938                         if (wqbuf_lastindex != wqbuf_firstindex) {
 939                                 struct SENSE_DATA *sensebuffer =
 940                                         (struct SENSE_DATA *)cmd->sense_buffer;
 941                                 arcmsr_post_Qbuffer(acb);
 942                                 /* has error report sensedata */
 943                                 sensebuffer->ErrorCode = 0x70;
 944                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
 945                                 sensebuffer->AdditionalSenseLength = 0x0A;
 946                                 sensebuffer->AdditionalSenseCode = 0x20;
 947                                 sensebuffer->Valid = 1;
 948                                 retvalue = ARCMSR_MESSAGE_FAIL;
 949                         } else {
 950                                 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
 951                                                 &(ARCMSR_MAX_QBUFFER - 1);
 952                                 if (my_empty_len >= user_len) {
 953                                         while (user_len > 0) {
 954                                                 pQbuffer =
 955                                                 &acb->wqbuffer[acb->wqbuf_lastindex];
 956                                                 memcpy(pQbuffer, ptmpuserbuffer, 1);
 957                                                 acb->wqbuf_lastindex++;
 958                                                 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
 959                                                 ptmpuserbuffer++;
 960                                                 user_len--;
 961                                         }
 962                                         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
 963                                                 acb->acb_flags &=
 964                                                         ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
 965                                                 arcmsr_post_Qbuffer(acb);
 966                                         }
 967                                 } else {
 968                                         /* has error report sensedata */
 969                                         struct SENSE_DATA *sensebuffer =
 970                                                 (struct SENSE_DATA *)cmd->sense_buffer;
 971                                         sensebuffer->ErrorCode = 0x70;
 972                                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
 973                                         sensebuffer->AdditionalSenseLength = 0x0A;
 974                                         sensebuffer->AdditionalSenseCode = 0x20;
 975                                         sensebuffer->Valid = 1;
 976                                         retvalue = ARCMSR_MESSAGE_FAIL;
 977                                 }
 978                         }
 979                         pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
 980                 }
 981                 break;
 982         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
 983                         uint8_t *pQbuffer = acb->rqbuffer;
 984
 985                         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
 986                                 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
 987                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
 988                                         &reg->inbound_doorbell);
 989                         }
 990                         acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
 991                         acb->rqbuf_firstindex = 0;
 992                         acb->rqbuf_lastindex = 0;
 993                         memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
 994                         pcmdmessagefld->cmdmessage.ReturnCode =
 995                                 ARCMSR_MESSAGE_RETURNCODE_OK;
 996                 }
 997                 break;
 998         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
 999                         uint8_t *pQbuffer = acb->wqbuffer;
1000
1001                         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1002                                 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1003                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
1004                                                 , &reg->inbound_doorbell);
1005                         }
1006                         acb->acb_flags |=
1007                                 (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1008                                         ACB_F_MESSAGE_WQBUFFER_READED);
1009                         acb->wqbuf_firstindex = 0;
1010                         acb->wqbuf_lastindex = 0;
1011                         memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1012                         pcmdmessagefld->cmdmessage.ReturnCode =
1013                                 ARCMSR_MESSAGE_RETURNCODE_OK;
1014                 }
1015                 break;
1016         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1017                         uint8_t *pQbuffer;
1018
1019                         if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1020                                 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1021                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
1022                                                 , &reg->inbound_doorbell);
1023                         }
1024                         acb->acb_flags |=
1025                                 (ACB_F_MESSAGE_WQBUFFER_CLEARED
1026                                 | ACB_F_MESSAGE_RQBUFFER_CLEARED
1027                                 | ACB_F_MESSAGE_WQBUFFER_READED);
1028                         acb->rqbuf_firstindex = 0;
1029                         acb->rqbuf_lastindex = 0;
1030                         acb->wqbuf_firstindex = 0;
1031                         acb->wqbuf_lastindex = 0;
1032                         pQbuffer = acb->rqbuffer;
1033                         memset(pQbuffer, 0, sizeof (struct QBUFFER));
1034                         pQbuffer = acb->wqbuffer;
1035                         memset(pQbuffer, 0, sizeof (struct QBUFFER));
1036                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1037                 }
1038                 break;
1039         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1040                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
1041                 }
1042                 break;
1043         case ARCMSR_MESSAGE_SAY_HELLO: {
1044                         int8_t * hello_string = "Hello! I am ARCMSR";
1045
1046                         memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1047                                 , (int16_t)strlen(hello_string));
1048                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1049                 }
1050                 break;
1051         case ARCMSR_MESSAGE_SAY_GOODBYE:
1052                 arcmsr_iop_parking(acb);
1053                 break;
1054         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1055                 arcmsr_flush_adapter_cache(acb);
1056                 break;
1057         default:
1058                 retvalue = ARCMSR_MESSAGE_FAIL;
1059         }
1060  message_out:
1061         if (cmd->use_sg) {
1062                 struct scatterlist *sg;
1063
1064                 sg = (struct scatterlist *) cmd->request_buffer;
1065                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1066         }
1067         return retvalue;
1068 }
1069
1070 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1071 {
1072         struct list_head *head = &acb->ccb_free_list;
1073         struct CommandControlBlock *ccb = NULL;
1074
1075         if (!list_empty(head)) {
1076                 ccb = list_entry(head->next, struct CommandControlBlock, list);
1077                 list_del(head->next);
1078         }
1079         return ccb;
1080 }
1081
1082 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
1083                 struct scsi_cmnd *cmd)
1084 {
1085         switch (cmd->cmnd[0]) {
1086         case INQUIRY: {
1087                 unsigned char inqdata[36];
1088                 char *buffer;
1089
1090                 if (cmd->device->lun) {
1091                         cmd->result = (DID_TIME_OUT << 16);
1092                         cmd->scsi_done(cmd);
1093                         return;
1094                 }
1095                 inqdata[0] = TYPE_PROCESSOR;
1096                 /* Periph Qualifier & Periph Dev Type */
1097                 inqdata[1] = 0;
1098                 /* rem media bit & Dev Type Modifier */
1099                 inqdata[2] = 0;
1100                 /* ISO,ECMA,& ANSI versions */
1101                 inqdata[4] = 31;
1102                 /* length of additional data */
1103                 strncpy(&inqdata[8], "Areca   ", 8);
1104                 /* Vendor Identification */
1105                 strncpy(&inqdata[16], "RAID controller ", 16);
1106                 /* Product Identification */
1107                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
1108                 if (cmd->use_sg) {
1109                         struct scatterlist *sg;
1110
1111                         sg = (struct scatterlist *) cmd->request_buffer;
1112                         buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
1113                 } else {
1114                         buffer = cmd->request_buffer;
1115                 }
1116                 memcpy(buffer, inqdata, sizeof(inqdata));
1117                 if (cmd->use_sg) {
1118                         struct scatterlist *sg;
1119
1120                         sg = (struct scatterlist *) cmd->request_buffer;
1121                         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1122                 }
1123                 cmd->scsi_done(cmd);
1124         }
1125         break;
1126         case WRITE_BUFFER:
1127         case READ_BUFFER: {
1128                 if (arcmsr_iop_message_xfer(acb, cmd))
1129                         cmd->result = (DID_ERROR << 16);
1130                 cmd->scsi_done(cmd);
1131         }
1132         break;
1133         default:
1134                 cmd->scsi_done(cmd);
1135         }
1136 }
1137
1138 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
1139         void (* done)(struct scsi_cmnd *))
1140 {
1141         struct Scsi_Host *host = cmd->device->host;
1142         struct AdapterControlBlock *acb =
1143                 (struct AdapterControlBlock *) host->hostdata;
1144         struct CommandControlBlock *ccb;
1145         int target = cmd->device->id;
1146         int lun = cmd->device->lun;
1147
1148         cmd->scsi_done = done;
1149         cmd->host_scribble = NULL;
1150         cmd->result = 0;
1151         if (acb->acb_flags & ACB_F_BUS_RESET) {
1152                 printk(KERN_NOTICE "arcmsr%d: bus reset"
1153                         " and return busy \n"
1154                         , acb->host->host_no);
1155                 return SCSI_MLQUEUE_HOST_BUSY;
1156         }
1157         if(target == 16) {
1158                 /* virtual device for iop message transfer */
1159                 arcmsr_handle_virtual_command(acb, cmd);
1160                 return 0;
1161         }
1162         if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
1163                 uint8_t block_cmd;
1164
1165                 block_cmd = cmd->cmnd[0] & 0x0f;
1166                 if (block_cmd == 0x08 || block_cmd == 0x0a) {
1167                         printk(KERN_NOTICE
1168                                 "arcmsr%d: block 'read/write'"
1169                                 "command with gone raid volume"
1170                                 " Cmd=%2x, TargetId=%d, Lun=%d \n"
1171                                 , acb->host->host_no
1172                                 , cmd->cmnd[0]
1173                                 , target, lun);
1174                         cmd->result = (DID_NO_CONNECT << 16);
1175                         cmd->scsi_done(cmd);
1176                         return 0;
1177                 }
1178         }
1179         if (atomic_read(&acb->ccboutstandingcount) >=
1180                         ARCMSR_MAX_OUTSTANDING_CMD)
1181                 return SCSI_MLQUEUE_HOST_BUSY;
1182
1183         ccb = arcmsr_get_freeccb(acb);
1184         if (!ccb)
1185                 return SCSI_MLQUEUE_HOST_BUSY;
1186         arcmsr_build_ccb(acb, ccb, cmd);
1187         arcmsr_post_ccb(acb, ccb);
1188         return 0;
1189 }
1190
1191 static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
1192 {
1193         struct MessageUnit __iomem *reg = acb->pmu;
1194         char *acb_firm_model = acb->firm_model;
1195         char *acb_firm_version = acb->firm_version;
1196         char __iomem *iop_firm_model = (char __iomem *) &reg->message_rwbuffer[15];
1197         char __iomem *iop_firm_version = (char __iomem *) &reg->message_rwbuffer[17];
1198         int count;
1199
1200         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
1201         if (arcmsr_wait_msgint_ready(acb))
1202                 printk(KERN_NOTICE
1203                         "arcmsr%d: wait "
1204                         "'get adapter firmware miscellaneous data' timeout \n"
1205                         , acb->host->host_no);
1206         count = 8;
1207         while (count) {
1208                 *acb_firm_model = readb(iop_firm_model);
1209                 acb_firm_model++;
1210                 iop_firm_model++;
1211                 count--;
1212         }
1213         count = 16;
1214         while (count) {
1215                 *acb_firm_version = readb(iop_firm_version);
1216                 acb_firm_version++;
1217                 iop_firm_version++;
1218                 count--;
1219         }
1220         printk(KERN_INFO
1221                 "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
1222                 , acb->host->host_no
1223                 , acb->firm_version);
1224         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
1225         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
1226         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
1227         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
1228 }
1229
1230 static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
1231         struct CommandControlBlock *poll_ccb)
1232 {
1233         struct MessageUnit __iomem *reg = acb->pmu;
1234         struct CommandControlBlock *ccb;
1235         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
1236         int id, lun;
1237
1238  polling_ccb_retry:
1239         poll_count++;
1240         outbound_intstatus = readl(&reg->outbound_intstatus)
1241                                         & acb->outbound_int_enable;
1242         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
1243         while (1) {
1244                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
1245                         if (poll_ccb_done)
1246                                 break;
1247                         else {
1248                                 msleep(25);
1249                                 if (poll_count > 100)
1250                                         break;
1251                                 goto polling_ccb_retry;
1252                         }
1253                 }
1254                 ccb = (struct CommandControlBlock *)
1255                         (acb->vir2phy_offset + (flag_ccb << 5));
1256                 if ((ccb->acb != acb) ||
1257                         (ccb->startdone != ARCMSR_CCB_START)) {
1258                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) ||
1259                                 (ccb == poll_ccb)) {
1260                                 printk(KERN_NOTICE
1261                                         "arcmsr%d: scsi id=%d lun=%d ccb='0x%p'"
1262                                         " poll command abort successfully \n"
1263                                         , acb->host->host_no
1264                                         , ccb->pcmd->device->id
1265                                         , ccb->pcmd->device->lun
1266                                         , ccb);
1267                                 ccb->pcmd->result = DID_ABORT << 16;
1268                                 arcmsr_ccb_complete(ccb, 1);
1269                                 poll_ccb_done = 1;
1270                                 continue;
1271                         }
1272                         printk(KERN_NOTICE
1273                                 "arcmsr%d: polling get an illegal ccb"
1274                                 " command done ccb='0x%p'"
1275                                 "ccboutstandingcount=%d \n"
1276                                 , acb->host->host_no
1277                                 , ccb
1278                                 , atomic_read(&acb->ccboutstandingcount));
1279                         continue;
1280                 }
1281                 id = ccb->pcmd->device->id;
1282                 lun = ccb->pcmd->device->lun;
1283                 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
1284                         if (acb->devstate[id][lun] == ARECA_RAID_GONE)
1285                                 acb->devstate[id][lun] = ARECA_RAID_GOOD;
1286                         ccb->pcmd->result = DID_OK << 16;
1287                         arcmsr_ccb_complete(ccb, 1);
1288                 } else {
1289                         switch(ccb->arcmsr_cdb.DeviceStatus) {
1290                         case ARCMSR_DEV_SELECT_TIMEOUT: {
1291                                         acb->devstate[id][lun] = ARECA_RAID_GONE;
1292                                         ccb->pcmd->result = DID_TIME_OUT << 16;
1293                                         arcmsr_ccb_complete(ccb, 1);
1294                                 }
1295                                 break;
1296                         case ARCMSR_DEV_ABORTED:
1297                         case ARCMSR_DEV_INIT_FAIL: {
1298                                         acb->devstate[id][lun] = ARECA_RAID_GONE;
1299                                         ccb->pcmd->result = DID_BAD_TARGET << 16;
1300                                         arcmsr_ccb_complete(ccb, 1);
1301                                 }
1302                                 break;
1303                         case ARCMSR_DEV_CHECK_CONDITION: {
1304                                         acb->devstate[id][lun] = ARECA_RAID_GOOD;
1305                                         arcmsr_report_sense_info(ccb);
1306                                         arcmsr_ccb_complete(ccb, 1);
1307                                 }
1308                                 break;
1309                         default:
1310                                 printk(KERN_NOTICE
1311                                         "arcmsr%d: scsi id=%d lun=%d"
1312                                         " polling and getting command error done"
1313                                         "but got unknown DeviceStatus = 0x%x \n"
1314                                         , acb->host->host_no
1315                                         , id
1316                                         , lun
1317                                         , ccb->arcmsr_cdb.DeviceStatus);
1318                                 acb->devstate[id][lun] = ARECA_RAID_GONE;
1319                                 ccb->pcmd->result = DID_BAD_TARGET << 16;
1320                                 arcmsr_ccb_complete(ccb, 1);
1321                                 break;
1322                         }
1323                 }
1324         }
1325 }
1326
1327 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
1328 {
1329         struct MessageUnit __iomem *reg = acb->pmu;
1330         uint32_t intmask_org, mask, outbound_doorbell, firmware_state = 0;
1331
1332         do {
1333                 firmware_state = readl(&reg->outbound_msgaddr1);
1334         } while (!(firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK));
1335         intmask_org = readl(&reg->outbound_intmask)
1336                         | ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
1337         arcmsr_get_firmware_spec(acb);
1338
1339         acb->acb_flags |= ACB_F_MSG_START_BGRB;
1340         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
1341         if (arcmsr_wait_msgint_ready(acb)) {
1342                 printk(KERN_NOTICE "arcmsr%d: "
1343                         "wait 'start adapter background rebulid' timeout\n",
1344                         acb->host->host_no);
1345         }
1346
1347         outbound_doorbell = readl(&reg->outbound_doorbell);
1348         writel(outbound_doorbell, &reg->outbound_doorbell);
1349         writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1350         mask = ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE
1351                         | ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
1352         writel(intmask_org & mask, &reg->outbound_intmask);
1353         acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1354         acb->acb_flags |= ACB_F_IOP_INITED;
1355 }
1356
1357 static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
1358 {
1359         struct MessageUnit __iomem *reg = acb->pmu;
1360         struct CommandControlBlock *ccb;
1361         uint32_t intmask_org;
1362         int i = 0;
1363
1364         if (atomic_read(&acb->ccboutstandingcount) != 0) {
1365                 /* talk to iop 331 outstanding command aborted */
1366                 arcmsr_abort_allcmd(acb);
1367                 /* wait for 3 sec for all command aborted*/
1368                 msleep_interruptible(3000);
1369                 /* disable all outbound interrupt */
1370                 intmask_org = arcmsr_disable_outbound_ints(acb);
1371                 /* clear all outbound posted Q */
1372                 for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
1373                         readl(&reg->outbound_queueport);
1374                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1375                         ccb = acb->pccb_pool[i];
1376                         if ((ccb->startdone == ARCMSR_CCB_START) ||
1377                                 (ccb->startdone == ARCMSR_CCB_ABORTED)) {
1378                                 ccb->startdone = ARCMSR_CCB_ABORTED;
1379                                 ccb->pcmd->result = DID_ABORT << 16;
1380                                 arcmsr_ccb_complete(ccb, 1);
1381                         }
1382                 }
1383                 /* enable all outbound interrupt */
1384                 arcmsr_enable_outbound_ints(acb, intmask_org);
1385         }
1386         atomic_set(&acb->ccboutstandingcount, 0);
1387 }
1388
1389 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
1390 {
1391         struct AdapterControlBlock *acb =
1392                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
1393         int i;
1394
1395         acb->num_resets++;
1396         acb->acb_flags |= ACB_F_BUS_RESET;
1397         for (i = 0; i < 400; i++) {
1398                 if (!atomic_read(&acb->ccboutstandingcount))
1399                         break;
1400                 arcmsr_interrupt(acb);
1401                 msleep(25);
1402         }
1403         arcmsr_iop_reset(acb);
1404         acb->acb_flags &= ~ACB_F_BUS_RESET;
1405         return SUCCESS;
1406 }
1407
1408 static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
1409                 struct CommandControlBlock *ccb)
1410 {
1411         u32 intmask;
1412
1413         ccb->startdone = ARCMSR_CCB_ABORTED;
1414
1415         /*
1416         ** Wait for 3 sec for all command done.
1417         */
1418         msleep_interruptible(3000);
1419
1420         intmask = arcmsr_disable_outbound_ints(acb);
1421         arcmsr_polling_ccbdone(acb, ccb);
1422         arcmsr_enable_outbound_ints(acb, intmask);
1423 }
1424
1425 static int arcmsr_abort(struct scsi_cmnd *cmd)
1426 {
1427         struct AdapterControlBlock *acb =
1428                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
1429         int i = 0;
1430
1431         printk(KERN_NOTICE
1432                 "arcmsr%d: abort device command of scsi id=%d lun=%d \n",
1433                 acb->host->host_no, cmd->device->id, cmd->device->lun);
1434         acb->num_aborts++;
1435
1436         /*
1437         ************************************************
1438         ** the all interrupt service routine is locked
1439         ** we need to handle it as soon as possible and exit
1440         ************************************************
1441         */
1442         if (!atomic_read(&acb->ccboutstandingcount))
1443                 return SUCCESS;
1444
1445         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1446                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
1447                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
1448                         arcmsr_abort_one_cmd(acb, ccb);
1449                         break;
1450                 }
1451         }
1452
1453         return SUCCESS;
1454 }
1455
1456 static const char *arcmsr_info(struct Scsi_Host *host)
1457 {
1458         struct AdapterControlBlock *acb =
1459                 (struct AdapterControlBlock *) host->hostdata;
1460         static char buf[256];
1461         char *type;
1462         int raid6 = 1;
1463
1464         switch (acb->pdev->device) {
1465         case PCI_DEVICE_ID_ARECA_1110:
1466         case PCI_DEVICE_ID_ARECA_1210:
1467                 raid6 = 0;
1468                 /*FALLTHRU*/
1469         case PCI_DEVICE_ID_ARECA_1120:
1470         case PCI_DEVICE_ID_ARECA_1130:
1471         case PCI_DEVICE_ID_ARECA_1160:
1472         case PCI_DEVICE_ID_ARECA_1170:
1473         case PCI_DEVICE_ID_ARECA_1220:
1474         case PCI_DEVICE_ID_ARECA_1230:
1475         case PCI_DEVICE_ID_ARECA_1260:
1476         case PCI_DEVICE_ID_ARECA_1270:
1477         case PCI_DEVICE_ID_ARECA_1280:
1478                 type = "SATA";
1479                 break;
1480         case PCI_DEVICE_ID_ARECA_1380:
1481         case PCI_DEVICE_ID_ARECA_1381:
1482         case PCI_DEVICE_ID_ARECA_1680:
1483         case PCI_DEVICE_ID_ARECA_1681:
1484                 type = "SAS";
1485                 break;
1486         default:
1487                 type = "X-TYPE";
1488                 break;
1489         }
1490         sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n        %s",
1491                         type, raid6 ? "( RAID6 capable)" : "",
1492                         ARCMSR_DRIVER_VERSION);
1493         return buf;
1494 }
1495
1496