SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/scsi/aacraid/aachba.c

   1 /*
   2  *      Adaptec AAC series RAID controller driver
   3  *      (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
   4  *
   5  * based on the old aacraid driver that is..
   6  * Adaptec aacraid device driver for Linux.
   7  *
   8  * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; see the file COPYING.  If not, write to
  22  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  */
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/types.h>
  29 #include <linux/pci.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/slab.h>
  32 #include <linux/completion.h>
  33 #include <linux/blkdev.h>
  34 #include <asm/semaphore.h>
  35 #include <asm/uaccess.h>
  36 #include <linux/highmem.h> /* For flush_kernel_dcache_page */
  37
  38 #include <scsi/scsi.h>
  39 #include <scsi/scsi_cmnd.h>
  40 #include <scsi/scsi_device.h>
  41 #include <scsi/scsi_host.h>
  42
  43 #include "aacraid.h"
  44
  45 /* values for inqd_pdt: Peripheral device type in plain English */
  46 #define INQD_PDT_DA     0x00    /* Direct-access (DISK) device */
  47 #define INQD_PDT_PROC   0x03    /* Processor device */
  48 #define INQD_PDT_CHNGR  0x08    /* Changer (jukebox, scsi2) */
  49 #define INQD_PDT_COMM   0x09    /* Communication device (scsi2) */
  50 #define INQD_PDT_NOLUN2 0x1f    /* Unknown Device (scsi2) */
  51 #define INQD_PDT_NOLUN  0x7f    /* Logical Unit Not Present */
  52
  53 #define INQD_PDT_DMASK  0x1F    /* Peripheral Device Type Mask */
  54 #define INQD_PDT_QMASK  0xE0    /* Peripheral Device Qualifer Mask */
  55
  56 /*
  57  *      Sense codes
  58  */
  59
  60 #define SENCODE_NO_SENSE                        0x00
  61 #define SENCODE_END_OF_DATA                     0x00
  62 #define SENCODE_BECOMING_READY                  0x04
  63 #define SENCODE_INIT_CMD_REQUIRED               0x04
  64 #define SENCODE_PARAM_LIST_LENGTH_ERROR         0x1A
  65 #define SENCODE_INVALID_COMMAND                 0x20
  66 #define SENCODE_LBA_OUT_OF_RANGE                0x21
  67 #define SENCODE_INVALID_CDB_FIELD               0x24
  68 #define SENCODE_LUN_NOT_SUPPORTED               0x25
  69 #define SENCODE_INVALID_PARAM_FIELD             0x26
  70 #define SENCODE_PARAM_NOT_SUPPORTED             0x26
  71 #define SENCODE_PARAM_VALUE_INVALID             0x26
  72 #define SENCODE_RESET_OCCURRED                  0x29
  73 #define SENCODE_LUN_NOT_SELF_CONFIGURED_YET     0x3E
  74 #define SENCODE_INQUIRY_DATA_CHANGED            0x3F
  75 #define SENCODE_SAVING_PARAMS_NOT_SUPPORTED     0x39
  76 #define SENCODE_DIAGNOSTIC_FAILURE              0x40
  77 #define SENCODE_INTERNAL_TARGET_FAILURE         0x44
  78 #define SENCODE_INVALID_MESSAGE_ERROR           0x49
  79 #define SENCODE_LUN_FAILED_SELF_CONFIG          0x4c
  80 #define SENCODE_OVERLAPPED_COMMAND              0x4E
  81
  82 /*
  83  *      Additional sense codes
  84  */
  85
  86 #define ASENCODE_NO_SENSE                       0x00
  87 #define ASENCODE_END_OF_DATA                    0x05
  88 #define ASENCODE_BECOMING_READY                 0x01
  89 #define ASENCODE_INIT_CMD_REQUIRED              0x02
  90 #define ASENCODE_PARAM_LIST_LENGTH_ERROR        0x00
  91 #define ASENCODE_INVALID_COMMAND                0x00
  92 #define ASENCODE_LBA_OUT_OF_RANGE               0x00
  93 #define ASENCODE_INVALID_CDB_FIELD              0x00
  94 #define ASENCODE_LUN_NOT_SUPPORTED              0x00
  95 #define ASENCODE_INVALID_PARAM_FIELD            0x00
  96 #define ASENCODE_PARAM_NOT_SUPPORTED            0x01
  97 #define ASENCODE_PARAM_VALUE_INVALID            0x02
  98 #define ASENCODE_RESET_OCCURRED                 0x00
  99 #define ASENCODE_LUN_NOT_SELF_CONFIGURED_YET    0x00
 100 #define ASENCODE_INQUIRY_DATA_CHANGED           0x03
 101 #define ASENCODE_SAVING_PARAMS_NOT_SUPPORTED    0x00
 102 #define ASENCODE_DIAGNOSTIC_FAILURE             0x80
 103 #define ASENCODE_INTERNAL_TARGET_FAILURE        0x00
 104 #define ASENCODE_INVALID_MESSAGE_ERROR          0x00
 105 #define ASENCODE_LUN_FAILED_SELF_CONFIG         0x00
 106 #define ASENCODE_OVERLAPPED_COMMAND             0x00
 107
 108 #define BYTE0(x) (unsigned char)(x)
 109 #define BYTE1(x) (unsigned char)((x) >> 8)
 110 #define BYTE2(x) (unsigned char)((x) >> 16)
 111 #define BYTE3(x) (unsigned char)((x) >> 24)
 112
 113 /*------------------------------------------------------------------------------
 114  *              S T R U C T S / T Y P E D E F S
 115  *----------------------------------------------------------------------------*/
 116 /* SCSI inquiry data */
 117 struct inquiry_data {
 118         u8 inqd_pdt;    /* Peripheral qualifier | Peripheral Device Type */
 119         u8 inqd_dtq;    /* RMB | Device Type Qualifier */
 120         u8 inqd_ver;    /* ISO version | ECMA version | ANSI-approved version */
 121         u8 inqd_rdf;    /* AENC | TrmIOP | Response data format */
 122         u8 inqd_len;    /* Additional length (n-4) */
 123         u8 inqd_pad1[2];/* Reserved - must be zero */
 124         u8 inqd_pad2;   /* RelAdr | WBus32 | WBus16 |  Sync  | Linked |Reserved| CmdQue | SftRe */
 125         u8 inqd_vid[8]; /* Vendor ID */
 126         u8 inqd_pid[16];/* Product ID */
 127         u8 inqd_prl[4]; /* Product Revision Level */
 128 };
 129
 130 /*
 131  *              M O D U L E   G L O B A L S
 132  */
 133
 134 static unsigned long aac_build_sg(struct scsi_cmnd* scsicmd, struct sgmap* sgmap);
 135 static unsigned long aac_build_sg64(struct scsi_cmnd* scsicmd, struct sgmap64* psg);
 136 static unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg);
 137 static int aac_send_srb_fib(struct scsi_cmnd* scsicmd);
 138 #ifdef AAC_DETAILED_STATUS_INFO
 139 static char *aac_get_status_string(u32 status);
 140 #endif
 141
 142 /*
 143  *      Non dasd selection is handled entirely in aachba now
 144  */
 145
 146 static int nondasd = -1;
 147 static int aac_cache = 0;
 148 static int dacmode = -1;
 149
 150 int aac_commit = -1;
 151 int startup_timeout = 180;
 152 int aif_timeout = 120;
 153
 154 module_param(nondasd, int, S_IRUGO|S_IWUSR);
 155 MODULE_PARM_DESC(nondasd, "Control scanning of hba for nondasd devices. 0=off, 1=on");
 156 module_param_named(cache, aac_cache, int, S_IRUGO|S_IWUSR);
 157 MODULE_PARM_DESC(cache, "Disable Queue Flush commands:\n\tbit 0 - Disable FUA in WRITE SCSI commands\n\tbit 1 - Disable SYNCHRONIZE_CACHE SCSI command\n\tbit 2 - Disable only if Battery not protecting Cache");
 158 module_param(dacmode, int, S_IRUGO|S_IWUSR);
 159 MODULE_PARM_DESC(dacmode, "Control whether dma addressing is using 64 bit DAC. 0=off, 1=on");
 160 module_param_named(commit, aac_commit, int, S_IRUGO|S_IWUSR);
 161 MODULE_PARM_DESC(commit, "Control whether a COMMIT_CONFIG is issued to the adapter for foreign arrays.\nThis is typically needed in systems that do not have a BIOS. 0=off, 1=on");
 162 module_param(startup_timeout, int, S_IRUGO|S_IWUSR);
 163 MODULE_PARM_DESC(startup_timeout, "The duration of time in seconds to wait for adapter to have it's kernel up and\nrunning. This is typically adjusted for large systems that do not have a BIOS.");
 164 module_param(aif_timeout, int, S_IRUGO|S_IWUSR);
 165 MODULE_PARM_DESC(aif_timeout, "The duration of time in seconds to wait for applications to pick up AIFs before\nderegistering them. This is typically adjusted for heavily burdened systems.");
 166
 167 int numacb = -1;
 168 module_param(numacb, int, S_IRUGO|S_IWUSR);
 169 MODULE_PARM_DESC(numacb, "Request a limit to the number of adapter control blocks (FIB) allocated. Valid values are 512 and down. Default is to use suggestion from Firmware.");
 170
 171 int acbsize = -1;
 172 module_param(acbsize, int, S_IRUGO|S_IWUSR);
 173 MODULE_PARM_DESC(acbsize, "Request a specific adapter control block (FIB) size. Valid values are 512, 2048, 4096 and 8192. Default is to use suggestion from Firmware.");
 174
 175 int update_interval = 30 * 60;
 176 module_param(update_interval, int, S_IRUGO|S_IWUSR);
 177 MODULE_PARM_DESC(update_interval, "Interval in seconds between time sync updates issued to adapter.");
 178
 179 int check_interval = 24 * 60 * 60;
 180 module_param(check_interval, int, S_IRUGO|S_IWUSR);
 181 MODULE_PARM_DESC(check_interval, "Interval in seconds between adapter health checks.");
 182
 183 int aac_check_reset = 1;
 184 module_param_named(check_reset, aac_check_reset, int, S_IRUGO|S_IWUSR);
 185 MODULE_PARM_DESC(aac_check_reset, "If adapter fails health check, reset the adapter. a value of -1 forces the reset to adapters programmed to ignore it.");
 186
 187 int expose_physicals = -1;
 188 module_param(expose_physicals, int, S_IRUGO|S_IWUSR);
 189 MODULE_PARM_DESC(expose_physicals, "Expose physical components of the arrays. -1=protect 0=off, 1=on");
 190
 191 int aac_reset_devices = 0;
 192 module_param_named(reset_devices, aac_reset_devices, int, S_IRUGO|S_IWUSR);
 193 MODULE_PARM_DESC(reset_devices, "Force an adapter reset at initialization.");
 194
 195 static inline int aac_valid_context(struct scsi_cmnd *scsicmd,
 196                 struct fib *fibptr) {
 197         struct scsi_device *device;
 198
 199         if (unlikely(!scsicmd || !scsicmd->scsi_done)) {
 200                 dprintk((KERN_WARNING "aac_valid_context: scsi command corrupt\n"));
 201                 aac_fib_complete(fibptr);
 202                 aac_fib_free(fibptr);
 203                 return 0;
 204         }
 205         scsicmd->SCp.phase = AAC_OWNER_MIDLEVEL;
 206         device = scsicmd->device;
 207         if (unlikely(!device || !scsi_device_online(device))) {
 208                 dprintk((KERN_WARNING "aac_valid_context: scsi device corrupt\n"));
 209                 aac_fib_complete(fibptr);
 210                 aac_fib_free(fibptr);
 211                 return 0;
 212         }
 213         return 1;
 214 }
 215
 216 /**
 217  *      aac_get_config_status   -       check the adapter configuration
 218  *      @common: adapter to query
 219  *
 220  *      Query config status, and commit the configuration if needed.
 221  */
 222 int aac_get_config_status(struct aac_dev *dev, int commit_flag)
 223 {
 224         int status = 0;
 225         struct fib * fibptr;
 226
 227         if (!(fibptr = aac_fib_alloc(dev)))
 228                 return -ENOMEM;
 229
 230         aac_fib_init(fibptr);
 231         {
 232                 struct aac_get_config_status *dinfo;
 233                 dinfo = (struct aac_get_config_status *) fib_data(fibptr);
 234
 235                 dinfo->command = cpu_to_le32(VM_ContainerConfig);
 236                 dinfo->type = cpu_to_le32(CT_GET_CONFIG_STATUS);
 237                 dinfo->count = cpu_to_le32(sizeof(((struct aac_get_config_status_resp *)NULL)->data));
 238         }
 239
 240         status = aac_fib_send(ContainerCommand,
 241                             fibptr,
 242                             sizeof (struct aac_get_config_status),
 243                             FsaNormal,
 244                             1, 1,
 245                             NULL, NULL);
 246         if (status < 0) {
 247                 printk(KERN_WARNING "aac_get_config_status: SendFIB failed.\n");
 248         } else {
 249                 struct aac_get_config_status_resp *reply
 250                   = (struct aac_get_config_status_resp *) fib_data(fibptr);
 251                 dprintk((KERN_WARNING
 252                   "aac_get_config_status: response=%d status=%d action=%d\n",
 253                   le32_to_cpu(reply->response),
 254                   le32_to_cpu(reply->status),
 255                   le32_to_cpu(reply->data.action)));
 256                 if ((le32_to_cpu(reply->response) != ST_OK) ||
 257                      (le32_to_cpu(reply->status) != CT_OK) ||
 258                      (le32_to_cpu(reply->data.action) > CFACT_PAUSE)) {
 259                         printk(KERN_WARNING "aac_get_config_status: Will not issue the Commit Configuration\n");
 260                         status = -EINVAL;
 261                 }
 262         }
 263         aac_fib_complete(fibptr);
 264         /* Send a CT_COMMIT_CONFIG to enable discovery of devices */
 265         if (status >= 0) {
 266                 if ((aac_commit == 1) || commit_flag) {
 267                         struct aac_commit_config * dinfo;
 268                         aac_fib_init(fibptr);
 269                         dinfo = (struct aac_commit_config *) fib_data(fibptr);
 270
 271                         dinfo->command = cpu_to_le32(VM_ContainerConfig);
 272                         dinfo->type = cpu_to_le32(CT_COMMIT_CONFIG);
 273
 274                         status = aac_fib_send(ContainerCommand,
 275                                     fibptr,
 276                                     sizeof (struct aac_commit_config),
 277                                     FsaNormal,
 278                                     1, 1,
 279                                     NULL, NULL);
 280                         aac_fib_complete(fibptr);
 281                 } else if (aac_commit == 0) {
 282                         printk(KERN_WARNING
 283                           "aac_get_config_status: Foreign device configurations are being ignored\n");
 284                 }
 285         }
 286         aac_fib_free(fibptr);
 287         return status;
 288 }
 289
 290 /**
 291  *      aac_get_containers      -       list containers
 292  *      @common: adapter to probe
 293  *
 294  *      Make a list of all containers on this controller
 295  */
 296 int aac_get_containers(struct aac_dev *dev)
 297 {
 298         struct fsa_dev_info *fsa_dev_ptr;
 299         u32 index;
 300         int status = 0;
 301         struct fib * fibptr;
 302         struct aac_get_container_count *dinfo;
 303         struct aac_get_container_count_resp *dresp;
 304         int maximum_num_containers = MAXIMUM_NUM_CONTAINERS;
 305
 306         if (!(fibptr = aac_fib_alloc(dev)))
 307                 return -ENOMEM;
 308
 309         aac_fib_init(fibptr);
 310         dinfo = (struct aac_get_container_count *) fib_data(fibptr);
 311         dinfo->command = cpu_to_le32(VM_ContainerConfig);
 312         dinfo->type = cpu_to_le32(CT_GET_CONTAINER_COUNT);
 313
 314         status = aac_fib_send(ContainerCommand,
 315                     fibptr,
 316                     sizeof (struct aac_get_container_count),
 317                     FsaNormal,
 318                     1, 1,
 319                     NULL, NULL);
 320         if (status >= 0) {
 321                 dresp = (struct aac_get_container_count_resp *)fib_data(fibptr);
 322                 maximum_num_containers = le32_to_cpu(dresp->ContainerSwitchEntries);
 323                 aac_fib_complete(fibptr);
 324         }
 325         aac_fib_free(fibptr);
 326
 327         if (maximum_num_containers < MAXIMUM_NUM_CONTAINERS)
 328                 maximum_num_containers = MAXIMUM_NUM_CONTAINERS;
 329         fsa_dev_ptr = kzalloc(sizeof(*fsa_dev_ptr) * maximum_num_containers,
 330                         GFP_KERNEL);
 331         if (!fsa_dev_ptr)
 332                 return -ENOMEM;
 333
 334         dev->fsa_dev = fsa_dev_ptr;
 335         dev->maximum_num_containers = maximum_num_containers;
 336
 337         for (index = 0; index < dev->maximum_num_containers; ) {
 338                 fsa_dev_ptr[index].devname[0] = '\0';
 339
 340                 status = aac_probe_container(dev, index);
 341
 342                 if (status < 0) {
 343                         printk(KERN_WARNING "aac_get_containers: SendFIB failed.\n");
 344                         break;
 345                 }
 346
 347                 /*
 348                  *      If there are no more containers, then stop asking.
 349                  */
 350                 if (++index >= status)
 351                         break;
 352         }
 353         return status;
 354 }
 355
 356 static void aac_internal_transfer(struct scsi_cmnd *scsicmd, void *data, unsigned int offset, unsigned int len)
 357 {
 358         void *buf;
 359         int transfer_len;
 360         struct scatterlist *sg = scsi_sglist(scsicmd);
 361
 362         buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
 363         transfer_len = min(sg->length, len + offset);
 364
 365         transfer_len -= offset;
 366         if (buf && transfer_len > 0)
 367                 memcpy(buf + offset, data, transfer_len);
 368
 369         flush_kernel_dcache_page(kmap_atomic_to_page(buf - sg->offset));
 370         kunmap_atomic(buf - sg->offset, KM_IRQ0);
 371
 372 }
 373
 374 static void get_container_name_callback(void *context, struct fib * fibptr)
 375 {
 376         struct aac_get_name_resp * get_name_reply;
 377         struct scsi_cmnd * scsicmd;
 378
 379         scsicmd = (struct scsi_cmnd *) context;
 380
 381         if (!aac_valid_context(scsicmd, fibptr))
 382                 return;
 383
 384         dprintk((KERN_DEBUG "get_container_name_callback[cpu %d]: t = %ld.\n", smp_processor_id(), jiffies));
 385         BUG_ON(fibptr == NULL);
 386
 387         get_name_reply = (struct aac_get_name_resp *) fib_data(fibptr);
 388         /* Failure is irrelevant, using default value instead */
 389         if ((le32_to_cpu(get_name_reply->status) == CT_OK)
 390          && (get_name_reply->data[0] != '\0')) {
 391                 char *sp = get_name_reply->data;
 392                 sp[sizeof(((struct aac_get_name_resp *)NULL)->data)-1] = '\0';
 393                 while (*sp == ' ')
 394                         ++sp;
 395                 if (*sp) {
 396                         char d[sizeof(((struct inquiry_data *)NULL)->inqd_pid)];
 397                         int count = sizeof(d);
 398                         char *dp = d;
 399                         do {
 400                                 *dp++ = (*sp) ? *sp++ : ' ';
 401                         } while (--count > 0);
 402                         aac_internal_transfer(scsicmd, d,
 403                           offsetof(struct inquiry_data, inqd_pid), sizeof(d));
 404                 }
 405         }
 406
 407         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
 408
 409         aac_fib_complete(fibptr);
 410         aac_fib_free(fibptr);
 411         scsicmd->scsi_done(scsicmd);
 412 }
 413
 414 /**
 415  *      aac_get_container_name  -       get container name, none blocking.
 416  */
 417 static int aac_get_container_name(struct scsi_cmnd * scsicmd)
 418 {
 419         int status;
 420         struct aac_get_name *dinfo;
 421         struct fib * cmd_fibcontext;
 422         struct aac_dev * dev;
 423
 424         dev = (struct aac_dev *)scsicmd->device->host->hostdata;
 425
 426         if (!(cmd_fibcontext = aac_fib_alloc(dev)))
 427                 return -ENOMEM;
 428
 429         aac_fib_init(cmd_fibcontext);
 430         dinfo = (struct aac_get_name *) fib_data(cmd_fibcontext);
 431
 432         dinfo->command = cpu_to_le32(VM_ContainerConfig);
 433         dinfo->type = cpu_to_le32(CT_READ_NAME);
 434         dinfo->cid = cpu_to_le32(scmd_id(scsicmd));
 435         dinfo->count = cpu_to_le32(sizeof(((struct aac_get_name_resp *)NULL)->data));
 436
 437         status = aac_fib_send(ContainerCommand,
 438                   cmd_fibcontext,
 439                   sizeof (struct aac_get_name),
 440                   FsaNormal,
 441                   0, 1,
 442                   (fib_callback)get_container_name_callback,
 443                   (void *) scsicmd);
 444
 445         /*
 446          *      Check that the command queued to the controller
 447          */
 448         if (status == -EINPROGRESS) {
 449                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
 450                 return 0;
 451         }
 452
 453         printk(KERN_WARNING "aac_get_container_name: aac_fib_send failed with status: %d.\n", status);
 454         aac_fib_complete(cmd_fibcontext);
 455         aac_fib_free(cmd_fibcontext);
 456         return -1;
 457 }
 458
 459 static int aac_probe_container_callback2(struct scsi_cmnd * scsicmd)
 460 {
 461         struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev;
 462
 463         if ((fsa_dev_ptr[scmd_id(scsicmd)].valid & 1))
 464                 return aac_scsi_cmd(scsicmd);
 465
 466         scsicmd->result = DID_NO_CONNECT << 16;
 467         scsicmd->scsi_done(scsicmd);
 468         return 0;
 469 }
 470
 471 static void _aac_probe_container2(void * context, struct fib * fibptr)
 472 {
 473         struct fsa_dev_info *fsa_dev_ptr;
 474         int (*callback)(struct scsi_cmnd *);
 475         struct scsi_cmnd * scsicmd = (struct scsi_cmnd *)context;
 476
 477
 478         if (!aac_valid_context(scsicmd, fibptr))
 479                 return;
 480
 481         scsicmd->SCp.Status = 0;
 482         fsa_dev_ptr = fibptr->dev->fsa_dev;
 483         if (fsa_dev_ptr) {
 484                 struct aac_mount * dresp = (struct aac_mount *) fib_data(fibptr);
 485                 fsa_dev_ptr += scmd_id(scsicmd);
 486
 487                 if ((le32_to_cpu(dresp->status) == ST_OK) &&
 488                     (le32_to_cpu(dresp->mnt[0].vol) != CT_NONE) &&
 489                     (le32_to_cpu(dresp->mnt[0].state) != FSCS_HIDDEN)) {
 490                         fsa_dev_ptr->valid = 1;
 491                         fsa_dev_ptr->type = le32_to_cpu(dresp->mnt[0].vol);
 492                         fsa_dev_ptr->size
 493                           = ((u64)le32_to_cpu(dresp->mnt[0].capacity)) +
 494                             (((u64)le32_to_cpu(dresp->mnt[0].capacityhigh)) << 32);
 495                         fsa_dev_ptr->ro = ((le32_to_cpu(dresp->mnt[0].state) & FSCS_READONLY) != 0);
 496                 }
 497                 if ((fsa_dev_ptr->valid & 1) == 0)
 498                         fsa_dev_ptr->valid = 0;
 499                 scsicmd->SCp.Status = le32_to_cpu(dresp->count);
 500         }
 501         aac_fib_complete(fibptr);
 502         aac_fib_free(fibptr);
 503         callback = (int (*)(struct scsi_cmnd *))(scsicmd->SCp.ptr);
 504         scsicmd->SCp.ptr = NULL;
 505         (*callback)(scsicmd);
 506         return;
 507 }
 508
 509 static void _aac_probe_container1(void * context, struct fib * fibptr)
 510 {
 511         struct scsi_cmnd * scsicmd;
 512         struct aac_mount * dresp;
 513         struct aac_query_mount *dinfo;
 514         int status;
 515
 516         dresp = (struct aac_mount *) fib_data(fibptr);
 517         dresp->mnt[0].capacityhigh = 0;
 518         if ((le32_to_cpu(dresp->status) != ST_OK) ||
 519             (le32_to_cpu(dresp->mnt[0].vol) != CT_NONE)) {
 520                 _aac_probe_container2(context, fibptr);
 521                 return;
 522         }
 523         scsicmd = (struct scsi_cmnd *) context;
 524
 525         if (!aac_valid_context(scsicmd, fibptr))
 526                 return;
 527
 528         aac_fib_init(fibptr);
 529
 530         dinfo = (struct aac_query_mount *)fib_data(fibptr);
 531
 532         dinfo->command = cpu_to_le32(VM_NameServe64);
 533         dinfo->count = cpu_to_le32(scmd_id(scsicmd));
 534         dinfo->type = cpu_to_le32(FT_FILESYS);
 535
 536         status = aac_fib_send(ContainerCommand,
 537                           fibptr,
 538                           sizeof(struct aac_query_mount),
 539                           FsaNormal,
 540                           0, 1,
 541                           _aac_probe_container2,
 542                           (void *) scsicmd);
 543         /*
 544          *      Check that the command queued to the controller
 545          */
 546         if (status == -EINPROGRESS)
 547                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
 548         else if (status < 0) {
 549                 /* Inherit results from VM_NameServe, if any */
 550                 dresp->status = cpu_to_le32(ST_OK);
 551                 _aac_probe_container2(context, fibptr);
 552         }
 553 }
 554
 555 static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(struct scsi_cmnd *))
 556 {
 557         struct fib * fibptr;
 558         int status = -ENOMEM;
 559
 560         if ((fibptr = aac_fib_alloc((struct aac_dev *)scsicmd->device->host->hostdata))) {
 561                 struct aac_query_mount *dinfo;
 562
 563                 aac_fib_init(fibptr);
 564
 565                 dinfo = (struct aac_query_mount *)fib_data(fibptr);
 566
 567                 dinfo->command = cpu_to_le32(VM_NameServe);
 568                 dinfo->count = cpu_to_le32(scmd_id(scsicmd));
 569                 dinfo->type = cpu_to_le32(FT_FILESYS);
 570                 scsicmd->SCp.ptr = (char *)callback;
 571
 572                 status = aac_fib_send(ContainerCommand,
 573                           fibptr,
 574                           sizeof(struct aac_query_mount),
 575                           FsaNormal,
 576                           0, 1,
 577                           _aac_probe_container1,
 578                           (void *) scsicmd);
 579                 /*
 580                  *      Check that the command queued to the controller
 581                  */
 582                 if (status == -EINPROGRESS) {
 583                         scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
 584                         return 0;
 585                 }
 586                 if (status < 0) {
 587                         scsicmd->SCp.ptr = NULL;
 588                         aac_fib_complete(fibptr);
 589                         aac_fib_free(fibptr);
 590                 }
 591         }
 592         if (status < 0) {
 593                 struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev;
 594                 if (fsa_dev_ptr) {
 595                         fsa_dev_ptr += scmd_id(scsicmd);
 596                         if ((fsa_dev_ptr->valid & 1) == 0) {
 597                                 fsa_dev_ptr->valid = 0;
 598                                 return (*callback)(scsicmd);
 599                         }
 600                 }
 601         }
 602         return status;
 603 }
 604
 605 /**
 606  *      aac_probe_container             -       query a logical volume
 607  *      @dev: device to query
 608  *      @cid: container identifier
 609  *
 610  *      Queries the controller about the given volume. The volume information
 611  *      is updated in the struct fsa_dev_info structure rather than returned.
 612  */
 613 static int aac_probe_container_callback1(struct scsi_cmnd * scsicmd)
 614 {
 615         scsicmd->device = NULL;
 616         return 0;
 617 }
 618
 619 int aac_probe_container(struct aac_dev *dev, int cid)
 620 {
 621         struct scsi_cmnd *scsicmd = kmalloc(sizeof(*scsicmd), GFP_KERNEL);
 622         struct scsi_device *scsidev = kmalloc(sizeof(*scsidev), GFP_KERNEL);
 623         int status;
 624
 625         if (!scsicmd || !scsidev) {
 626                 kfree(scsicmd);
 627                 kfree(scsidev);
 628                 return -ENOMEM;
 629         }
 630         scsicmd->list.next = NULL;
 631         scsicmd->scsi_done = (void (*)(struct scsi_cmnd*))aac_probe_container_callback1;
 632
 633         scsicmd->device = scsidev;
 634         scsidev->sdev_state = 0;
 635         scsidev->id = cid;
 636         scsidev->host = dev->scsi_host_ptr;
 637
 638         if (_aac_probe_container(scsicmd, aac_probe_container_callback1) == 0)
 639                 while (scsicmd->device == scsidev)
 640                         schedule();
 641         kfree(scsidev);
 642         status = scsicmd->SCp.Status;
 643         kfree(scsicmd);
 644         return status;
 645 }
 646
 647 /* Local Structure to set SCSI inquiry data strings */
 648 struct scsi_inq {
 649         char vid[8];         /* Vendor ID */
 650         char pid[16];        /* Product ID */
 651         char prl[4];         /* Product Revision Level */
 652 };
 653
 654 /**
 655  *      InqStrCopy      -       string merge
 656  *      @a:     string to copy from
 657  *      @b:     string to copy to
 658  *
 659  *      Copy a String from one location to another
 660  *      without copying \0
 661  */
 662
 663 static void inqstrcpy(char *a, char *b)
 664 {
 665
 666         while (*a != (char)0)
 667                 *b++ = *a++;
 668 }
 669
 670 static char *container_types[] = {
 671         "None",
 672         "Volume",
 673         "Mirror",
 674         "Stripe",
 675         "RAID5",
 676         "SSRW",
 677         "SSRO",
 678         "Morph",
 679         "Legacy",
 680         "RAID4",
 681         "RAID10",
 682         "RAID00",
 683         "V-MIRRORS",
 684         "PSEUDO R4",
 685         "RAID50",
 686         "RAID5D",
 687         "RAID5D0",
 688         "RAID1E",
 689         "RAID6",
 690         "RAID60",
 691         "Unknown"
 692 };
 693
 694 char * get_container_type(unsigned tindex)
 695 {
 696         if (tindex >= ARRAY_SIZE(container_types))
 697                 tindex = ARRAY_SIZE(container_types) - 1;
 698         return container_types[tindex];
 699 }
 700
 701 /* Function: setinqstr
 702  *
 703  * Arguments: [1] pointer to void [1] int
 704  *
 705  * Purpose: Sets SCSI inquiry data strings for vendor, product
 706  * and revision level. Allows strings to be set in platform dependant
 707  * files instead of in OS dependant driver source.
 708  */
 709
 710 static void setinqstr(struct aac_dev *dev, void *data, int tindex)
 711 {
 712         struct scsi_inq *str;
 713
 714         str = (struct scsi_inq *)(data); /* cast data to scsi inq block */
 715         memset(str, ' ', sizeof(*str));
 716
 717         if (dev->supplement_adapter_info.AdapterTypeText[0]) {
 718                 char * cp = dev->supplement_adapter_info.AdapterTypeText;
 719                 int c;
 720                 if ((cp[0] == 'A') && (cp[1] == 'O') && (cp[2] == 'C'))
 721                         inqstrcpy("SMC", str->vid);
 722                 else {
 723                         c = sizeof(str->vid);
 724                         while (*cp && *cp != ' ' && --c)
 725                                 ++cp;
 726                         c = *cp;
 727                         *cp = '\0';
 728                         inqstrcpy (dev->supplement_adapter_info.AdapterTypeText,
 729                                    str->vid);
 730                         *cp = c;
 731                         while (*cp && *cp != ' ')
 732                                 ++cp;
 733                 }
 734                 while (*cp == ' ')
 735                         ++cp;
 736                 /* last six chars reserved for vol type */
 737                 c = 0;
 738                 if (strlen(cp) > sizeof(str->pid)) {
 739                         c = cp[sizeof(str->pid)];
 740                         cp[sizeof(str->pid)] = '\0';
 741                 }
 742                 inqstrcpy (cp, str->pid);
 743                 if (c)
 744                         cp[sizeof(str->pid)] = c;
 745         } else {
 746                 struct aac_driver_ident *mp = aac_get_driver_ident(dev->cardtype);
 747
 748                 inqstrcpy (mp->vname, str->vid);
 749                 /* last six chars reserved for vol type */
 750                 inqstrcpy (mp->model, str->pid);
 751         }
 752
 753         if (tindex < ARRAY_SIZE(container_types)){
 754                 char *findit = str->pid;
 755
 756                 for ( ; *findit != ' '; findit++); /* walk till we find a space */
 757                 /* RAID is superfluous in the context of a RAID device */
 758                 if (memcmp(findit-4, "RAID", 4) == 0)
 759                         *(findit -= 4) = ' ';
 760                 if (((findit - str->pid) + strlen(container_types[tindex]))
 761                  < (sizeof(str->pid) + sizeof(str->prl)))
 762                         inqstrcpy (container_types[tindex], findit + 1);
 763         }
 764         inqstrcpy ("V1.0", str->prl);
 765 }
 766
 767 static void get_container_serial_callback(void *context, struct fib * fibptr)
 768 {
 769         struct aac_get_serial_resp * get_serial_reply;
 770         struct scsi_cmnd * scsicmd;
 771
 772         BUG_ON(fibptr == NULL);
 773
 774         scsicmd = (struct scsi_cmnd *) context;
 775         if (!aac_valid_context(scsicmd, fibptr))
 776                 return;
 777
 778         get_serial_reply = (struct aac_get_serial_resp *) fib_data(fibptr);
 779         /* Failure is irrelevant, using default value instead */
 780         if (le32_to_cpu(get_serial_reply->status) == CT_OK) {
 781                 char sp[13];
 782                 /* EVPD bit set */
 783                 sp[0] = INQD_PDT_DA;
 784                 sp[1] = scsicmd->cmnd[2];
 785                 sp[2] = 0;
 786                 sp[3] = snprintf(sp+4, sizeof(sp)-4, "%08X",
 787                   le32_to_cpu(get_serial_reply->uid));
 788                 aac_internal_transfer(scsicmd, sp, 0, sizeof(sp));
 789         }
 790
 791         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
 792
 793         aac_fib_complete(fibptr);
 794         aac_fib_free(fibptr);
 795         scsicmd->scsi_done(scsicmd);
 796 }
 797
 798 /**
 799  *      aac_get_container_serial - get container serial, none blocking.
 800  */
 801 static int aac_get_container_serial(struct scsi_cmnd * scsicmd)
 802 {
 803         int status;
 804         struct aac_get_serial *dinfo;
 805         struct fib * cmd_fibcontext;
 806         struct aac_dev * dev;
 807
 808         dev = (struct aac_dev *)scsicmd->device->host->hostdata;
 809
 810         if (!(cmd_fibcontext = aac_fib_alloc(dev)))
 811                 return -ENOMEM;
 812
 813         aac_fib_init(cmd_fibcontext);
 814         dinfo = (struct aac_get_serial *) fib_data(cmd_fibcontext);
 815
 816         dinfo->command = cpu_to_le32(VM_ContainerConfig);
 817         dinfo->type = cpu_to_le32(CT_CID_TO_32BITS_UID);
 818         dinfo->cid = cpu_to_le32(scmd_id(scsicmd));
 819
 820         status = aac_fib_send(ContainerCommand,
 821                   cmd_fibcontext,
 822                   sizeof (struct aac_get_serial),
 823                   FsaNormal,
 824                   0, 1,
 825                   (fib_callback) get_container_serial_callback,
 826                   (void *) scsicmd);
 827
 828         /*
 829          *      Check that the command queued to the controller
 830          */
 831         if (status == -EINPROGRESS) {
 832                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
 833                 return 0;
 834         }
 835
 836         printk(KERN_WARNING "aac_get_container_serial: aac_fib_send failed with status: %d.\n", status);
 837         aac_fib_complete(cmd_fibcontext);
 838         aac_fib_free(cmd_fibcontext);
 839         return -1;
 840 }
 841
 842 /* Function: setinqserial
 843  *
 844  * Arguments: [1] pointer to void [1] int
 845  *
 846  * Purpose: Sets SCSI Unit Serial number.
 847  *          This is a fake. We should read a proper
 848  *          serial number from the container. <SuSE>But
 849  *          without docs it's quite hard to do it :-)
 850  *          So this will have to do in the meantime.</SuSE>
 851  */
 852
 853 static int setinqserial(struct aac_dev *dev, void *data, int cid)
 854 {
 855         /*
 856          *      This breaks array migration.
 857          */
 858         return snprintf((char *)(data), sizeof(struct scsi_inq) - 4, "%08X%02X",
 859                         le32_to_cpu(dev->adapter_info.serial[0]), cid);
 860 }
 861
 862 static inline void set_sense(struct sense_data *sense_data, u8 sense_key,
 863         u8 sense_code, u8 a_sense_code, u8 bit_pointer, u16 field_pointer)
 864 {
 865         u8 *sense_buf = (u8 *)sense_data;
 866         /* Sense data valid, err code 70h */
 867         sense_buf[0] = 0x70; /* No info field */
 868         sense_buf[1] = 0;       /* Segment number, always zero */
 869
 870         sense_buf[2] = sense_key;       /* Sense key */
 871
 872         sense_buf[12] = sense_code;     /* Additional sense code */
 873         sense_buf[13] = a_sense_code;   /* Additional sense code qualifier */
 874
 875         if (sense_key == ILLEGAL_REQUEST) {
 876                 sense_buf[7] = 10;      /* Additional sense length */
 877
 878                 sense_buf[15] = bit_pointer;
 879                 /* Illegal parameter is in the parameter block */
 880                 if (sense_code == SENCODE_INVALID_CDB_FIELD)
 881                         sense_buf[15] |= 0xc0;/* Std sense key specific field */
 882                 /* Illegal parameter is in the CDB block */
 883                 sense_buf[16] = field_pointer >> 8;     /* MSB */
 884                 sense_buf[17] = field_pointer;          /* LSB */
 885         } else
 886                 sense_buf[7] = 6;       /* Additional sense length */
 887 }
 888
 889 static int aac_bounds_32(struct aac_dev * dev, struct scsi_cmnd * cmd, u64 lba)
 890 {
 891         if (lba & 0xffffffff00000000LL) {
 892                 int cid = scmd_id(cmd);
 893                 dprintk((KERN_DEBUG "aacraid: Illegal lba\n"));
 894                 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
 895                         SAM_STAT_CHECK_CONDITION;
 896                 set_sense(&dev->fsa_dev[cid].sense_data,
 897                   HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
 898                   ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
 899                 memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
 900                        min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
 901                              SCSI_SENSE_BUFFERSIZE));
 902                 cmd->scsi_done(cmd);
 903                 return 1;
 904         }
 905         return 0;
 906 }
 907
 908 static int aac_bounds_64(struct aac_dev * dev, struct scsi_cmnd * cmd, u64 lba)
 909 {
 910         return 0;
 911 }
 912
 913 static void io_callback(void *context, struct fib * fibptr);
 914
 915 static int aac_read_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count)
 916 {
 917         u16 fibsize;
 918         struct aac_raw_io *readcmd;
 919         aac_fib_init(fib);
 920         readcmd = (struct aac_raw_io *) fib_data(fib);
 921         readcmd->block[0] = cpu_to_le32((u32)(lba&0xffffffff));
 922         readcmd->block[1] = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
 923         readcmd->count = cpu_to_le32(count<<9);
 924         readcmd->cid = cpu_to_le16(scmd_id(cmd));
 925         readcmd->flags = cpu_to_le16(IO_TYPE_READ);
 926         readcmd->bpTotal = 0;
 927         readcmd->bpComplete = 0;
 928
 929         aac_build_sgraw(cmd, &readcmd->sg);
 930         fibsize = sizeof(struct aac_raw_io) + ((le32_to_cpu(readcmd->sg.count) - 1) * sizeof (struct sgentryraw));
 931         BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
 932         /*
 933          *      Now send the Fib to the adapter
 934          */
 935         return aac_fib_send(ContainerRawIo,
 936                           fib,
 937                           fibsize,
 938                           FsaNormal,
 939                           0, 1,
 940                           (fib_callback) io_callback,
 941                           (void *) cmd);
 942 }
 943
 944 static int aac_read_block64(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count)
 945 {
 946         u16 fibsize;
 947         struct aac_read64 *readcmd;
 948         aac_fib_init(fib);
 949         readcmd = (struct aac_read64 *) fib_data(fib);
 950         readcmd->command = cpu_to_le32(VM_CtHostRead64);
 951         readcmd->cid = cpu_to_le16(scmd_id(cmd));
 952         readcmd->sector_count = cpu_to_le16(count);
 953         readcmd->block = cpu_to_le32((u32)(lba&0xffffffff));
 954         readcmd->pad   = 0;
 955         readcmd->flags = 0;
 956
 957         aac_build_sg64(cmd, &readcmd->sg);
 958         fibsize = sizeof(struct aac_read64) +
 959                 ((le32_to_cpu(readcmd->sg.count) - 1) *
 960                  sizeof (struct sgentry64));
 961         BUG_ON (fibsize > (fib->dev->max_fib_size -
 962                                 sizeof(struct aac_fibhdr)));
 963         /*
 964          *      Now send the Fib to the adapter
 965          */
 966         return aac_fib_send(ContainerCommand64,
 967                           fib,
 968                           fibsize,
 969                           FsaNormal,
 970                           0, 1,
 971                           (fib_callback) io_callback,
 972                           (void *) cmd);
 973 }
 974
 975 static int aac_read_block(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count)
 976 {
 977         u16 fibsize;
 978         struct aac_read *readcmd;
 979         aac_fib_init(fib);
 980         readcmd = (struct aac_read *) fib_data(fib);
 981         readcmd->command = cpu_to_le32(VM_CtBlockRead);
 982         readcmd->cid = cpu_to_le32(scmd_id(cmd));
 983         readcmd->block = cpu_to_le32((u32)(lba&0xffffffff));
 984         readcmd->count = cpu_to_le32(count * 512);
 985
 986         aac_build_sg(cmd, &readcmd->sg);
 987         fibsize = sizeof(struct aac_read) +
 988                         ((le32_to_cpu(readcmd->sg.count) - 1) *
 989                          sizeof (struct sgentry));
 990         BUG_ON (fibsize > (fib->dev->max_fib_size -
 991                                 sizeof(struct aac_fibhdr)));
 992         /*
 993          *      Now send the Fib to the adapter
 994          */
 995         return aac_fib_send(ContainerCommand,
 996                           fib,
 997                           fibsize,
 998                           FsaNormal,
 999                           0, 1,
1000                           (fib_callback) io_callback,
1001                           (void *) cmd);
1002 }
1003
1004 static int aac_write_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count, int fua)
1005 {
1006         u16 fibsize;
1007         struct aac_raw_io *writecmd;
1008         aac_fib_init(fib);
1009         writecmd = (struct aac_raw_io *) fib_data(fib);
1010         writecmd->block[0] = cpu_to_le32((u32)(lba&0xffffffff));
1011         writecmd->block[1] = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
1012         writecmd->count = cpu_to_le32(count<<9);
1013         writecmd->cid = cpu_to_le16(scmd_id(cmd));
1014         writecmd->flags = (fua && ((aac_cache & 5) != 1) &&
1015           (((aac_cache & 5) != 5) || !fib->dev->cache_protected)) ?
1016                 cpu_to_le16(IO_TYPE_WRITE|IO_SUREWRITE) :
1017                 cpu_to_le16(IO_TYPE_WRITE);
1018         writecmd->bpTotal = 0;
1019         writecmd->bpComplete = 0;
1020
1021         aac_build_sgraw(cmd, &writecmd->sg);
1022         fibsize = sizeof(struct aac_raw_io) + ((le32_to_cpu(writecmd->sg.count) - 1) * sizeof (struct sgentryraw));
1023         BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
1024         /*
1025          *      Now send the Fib to the adapter
1026          */
1027         return aac_fib_send(ContainerRawIo,
1028                           fib,
1029                           fibsize,
1030                           FsaNormal,
1031                           0, 1,
1032                           (fib_callback) io_callback,
1033                           (void *) cmd);
1034 }
1035
1036 static int aac_write_block64(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count, int fua)
1037 {
1038         u16 fibsize;
1039         struct aac_write64 *writecmd;
1040         aac_fib_init(fib);
1041         writecmd = (struct aac_write64 *) fib_data(fib);
1042         writecmd->command = cpu_to_le32(VM_CtHostWrite64);
1043         writecmd->cid = cpu_to_le16(scmd_id(cmd));
1044         writecmd->sector_count = cpu_to_le16(count);
1045         writecmd->block = cpu_to_le32((u32)(lba&0xffffffff));
1046         writecmd->pad   = 0;
1047         writecmd->flags = 0;
1048
1049         aac_build_sg64(cmd, &writecmd->sg);
1050         fibsize = sizeof(struct aac_write64) +
1051                 ((le32_to_cpu(writecmd->sg.count) - 1) *
1052                  sizeof (struct sgentry64));
1053         BUG_ON (fibsize > (fib->dev->max_fib_size -
1054                                 sizeof(struct aac_fibhdr)));
1055         /*
1056          *      Now send the Fib to the adapter
1057          */
1058         return aac_fib_send(ContainerCommand64,
1059                           fib,
1060                           fibsize,
1061                           FsaNormal,
1062                           0, 1,
1063                           (fib_callback) io_callback,
1064                           (void *) cmd);
1065 }
1066
1067 static int aac_write_block(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count, int fua)
1068 {
1069         u16 fibsize;
1070         struct aac_write *writecmd;
1071         aac_fib_init(fib);
1072         writecmd = (struct aac_write *) fib_data(fib);
1073         writecmd->command = cpu_to_le32(VM_CtBlockWrite);
1074         writecmd->cid = cpu_to_le32(scmd_id(cmd));
1075         writecmd->block = cpu_to_le32((u32)(lba&0xffffffff));
1076         writecmd->count = cpu_to_le32(count * 512);
1077         writecmd->sg.count = cpu_to_le32(1);
1078         /* ->stable is not used - it did mean which type of write */
1079
1080         aac_build_sg(cmd, &writecmd->sg);
1081         fibsize = sizeof(struct aac_write) +
1082                 ((le32_to_cpu(writecmd->sg.count) - 1) *
1083                  sizeof (struct sgentry));
1084         BUG_ON (fibsize > (fib->dev->max_fib_size -
1085                                 sizeof(struct aac_fibhdr)));
1086         /*
1087          *      Now send the Fib to the adapter
1088          */
1089         return aac_fib_send(ContainerCommand,
1090                           fib,
1091                           fibsize,
1092                           FsaNormal,
1093                           0, 1,
1094                           (fib_callback) io_callback,
1095                           (void *) cmd);
1096 }
1097
1098 static struct aac_srb * aac_scsi_common(struct fib * fib, struct scsi_cmnd * cmd)
1099 {
1100         struct aac_srb * srbcmd;
1101         u32 flag;
1102         u32 timeout;
1103
1104         aac_fib_init(fib);
1105         switch(cmd->sc_data_direction){
1106         case DMA_TO_DEVICE:
1107                 flag = SRB_DataOut;
1108                 break;
1109         case DMA_BIDIRECTIONAL:
1110                 flag = SRB_DataIn | SRB_DataOut;
1111                 break;
1112         case DMA_FROM_DEVICE:
1113                 flag = SRB_DataIn;
1114                 break;
1115         case DMA_NONE:
1116         default:        /* shuts up some versions of gcc */
1117                 flag = SRB_NoDataXfer;
1118                 break;
1119         }
1120
1121         srbcmd = (struct aac_srb*) fib_data(fib);
1122         srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);
1123         srbcmd->channel  = cpu_to_le32(aac_logical_to_phys(scmd_channel(cmd)));
1124         srbcmd->id       = cpu_to_le32(scmd_id(cmd));
1125         srbcmd->lun      = cpu_to_le32(cmd->device->lun);
1126         srbcmd->flags    = cpu_to_le32(flag);
1127         timeout = cmd->timeout_per_command/HZ;
1128         if (timeout == 0)
1129                 timeout = 1;
1130         srbcmd->timeout  = cpu_to_le32(timeout);  // timeout in seconds
1131         srbcmd->retry_limit = 0; /* Obsolete parameter */
1132         srbcmd->cdb_size = cpu_to_le32(cmd->cmd_len);
1133         return srbcmd;
1134 }
1135
1136 static void aac_srb_callback(void *context, struct fib * fibptr);
1137
1138 static int aac_scsi_64(struct fib * fib, struct scsi_cmnd * cmd)
1139 {
1140         u16 fibsize;
1141         struct aac_srb * srbcmd = aac_scsi_common(fib, cmd);
1142
1143         aac_build_sg64(cmd, (struct sgmap64*) &srbcmd->sg);
1144         srbcmd->count = cpu_to_le32(scsi_bufflen(cmd));
1145
1146         memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
1147         memcpy(srbcmd->cdb, cmd->cmnd, cmd->cmd_len);
1148         /*
1149          *      Build Scatter/Gather list
1150          */
1151         fibsize = sizeof (struct aac_srb) - sizeof (struct sgentry) +
1152                 ((le32_to_cpu(srbcmd->sg.count) & 0xff) *
1153                  sizeof (struct sgentry64));
1154         BUG_ON (fibsize > (fib->dev->max_fib_size -
1155                                 sizeof(struct aac_fibhdr)));
1156
1157         /*
1158          *      Now send the Fib to the adapter
1159          */
1160         return aac_fib_send(ScsiPortCommand64, fib,
1161                                 fibsize, FsaNormal, 0, 1,
1162                                   (fib_callback) aac_srb_callback,
1163                                   (void *) cmd);
1164 }
1165
1166 static int aac_scsi_32(struct fib * fib, struct scsi_cmnd * cmd)
1167 {
1168         u16 fibsize;
1169         struct aac_srb * srbcmd = aac_scsi_common(fib, cmd);
1170
1171         aac_build_sg(cmd, (struct sgmap*)&srbcmd->sg);
1172         srbcmd->count = cpu_to_le32(scsi_bufflen(cmd));
1173
1174         memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
1175         memcpy(srbcmd->cdb, cmd->cmnd, cmd->cmd_len);
1176         /*
1177          *      Build Scatter/Gather list
1178          */
1179         fibsize = sizeof (struct aac_srb) +
1180                 (((le32_to_cpu(srbcmd->sg.count) & 0xff) - 1) *
1181                  sizeof (struct sgentry));
1182         BUG_ON (fibsize > (fib->dev->max_fib_size -
1183                                 sizeof(struct aac_fibhdr)));
1184
1185         /*
1186          *      Now send the Fib to the adapter
1187          */
1188         return aac_fib_send(ScsiPortCommand, fib, fibsize, FsaNormal, 0, 1,
1189                                   (fib_callback) aac_srb_callback, (void *) cmd);
1190 }
1191
1192 static int aac_scsi_32_64(struct fib * fib, struct scsi_cmnd * cmd)
1193 {
1194         if ((sizeof(dma_addr_t) > 4) &&
1195          (num_physpages > (0xFFFFFFFFULL >> PAGE_SHIFT)) &&
1196          (fib->dev->adapter_info.options & AAC_OPT_SGMAP_HOST64))
1197                 return FAILED;
1198         return aac_scsi_32(fib, cmd);
1199 }
1200
1201 int aac_get_adapter_info(struct aac_dev* dev)
1202 {
1203         struct fib* fibptr;
1204         int rcode;
1205         u32 tmp;
1206         struct aac_adapter_info *info;
1207         struct aac_bus_info *command;
1208         struct aac_bus_info_response *bus_info;
1209
1210         if (!(fibptr = aac_fib_alloc(dev)))
1211                 return -ENOMEM;
1212
1213         aac_fib_init(fibptr);
1214         info = (struct aac_adapter_info *) fib_data(fibptr);
1215         memset(info,0,sizeof(*info));
1216
1217         rcode = aac_fib_send(RequestAdapterInfo,
1218                          fibptr,
1219                          sizeof(*info),
1220                          FsaNormal,
1221                          -1, 1, /* First `interrupt' command uses special wait */
1222                          NULL,
1223                          NULL);
1224
1225         if (rcode < 0) {
1226                 aac_fib_complete(fibptr);
1227                 aac_fib_free(fibptr);
1228                 return rcode;
1229         }
1230         memcpy(&dev->adapter_info, info, sizeof(*info));
1231
1232         if (dev->adapter_info.options & AAC_OPT_SUPPLEMENT_ADAPTER_INFO) {
1233                 struct aac_supplement_adapter_info * sinfo;
1234
1235                 aac_fib_init(fibptr);
1236
1237                 sinfo = (struct aac_supplement_adapter_info *) fib_data(fibptr);
1238
1239                 memset(sinfo,0,sizeof(*sinfo));
1240
1241                 rcode = aac_fib_send(RequestSupplementAdapterInfo,
1242                                  fibptr,
1243                                  sizeof(*sinfo),
1244                                  FsaNormal,
1245                                  1, 1,
1246                                  NULL,
1247                                  NULL);
1248
1249                 if (rcode >= 0)
1250                         memcpy(&dev->supplement_adapter_info, sinfo, sizeof(*sinfo));
1251         }
1252
1253
1254         /*
1255          * GetBusInfo
1256          */
1257
1258         aac_fib_init(fibptr);
1259
1260         bus_info = (struct aac_bus_info_response *) fib_data(fibptr);
1261
1262         memset(bus_info, 0, sizeof(*bus_info));
1263
1264         command = (struct aac_bus_info *)bus_info;
1265
1266         command->Command = cpu_to_le32(VM_Ioctl);
1267         command->ObjType = cpu_to_le32(FT_DRIVE);
1268         command->MethodId = cpu_to_le32(1);
1269         command->CtlCmd = cpu_to_le32(GetBusInfo);
1270
1271         rcode = aac_fib_send(ContainerCommand,
1272                          fibptr,
1273                          sizeof (*bus_info),
1274                          FsaNormal,
1275                          1, 1,
1276                          NULL, NULL);
1277
1278         /* reasoned default */
1279         dev->maximum_num_physicals = 16;
1280         if (rcode >= 0 && le32_to_cpu(bus_info->Status) == ST_OK) {
1281                 dev->maximum_num_physicals = le32_to_cpu(bus_info->TargetsPerBus);
1282                 dev->maximum_num_channels = le32_to_cpu(bus_info->BusCount);
1283         }
1284
1285         if (!dev->in_reset) {
1286                 char buffer[16];
1287                 tmp = le32_to_cpu(dev->adapter_info.kernelrev);
1288                 printk(KERN_INFO "%s%d: kernel %d.%d-%d[%d] %.*s\n",
1289                         dev->name,
1290                         dev->id,
1291                         tmp>>24,
1292                         (tmp>>16)&0xff,
1293                         tmp&0xff,
1294                         le32_to_cpu(dev->adapter_info.kernelbuild),
1295                         (int)sizeof(dev->supplement_adapter_info.BuildDate),
1296                         dev->supplement_adapter_info.BuildDate);
1297                 tmp = le32_to_cpu(dev->adapter_info.monitorrev);
1298                 printk(KERN_INFO "%s%d: monitor %d.%d-%d[%d]\n",
1299                         dev->name, dev->id,
1300                         tmp>>24,(tmp>>16)&0xff,tmp&0xff,
1301                         le32_to_cpu(dev->adapter_info.monitorbuild));
1302                 tmp = le32_to_cpu(dev->adapter_info.biosrev);
1303                 printk(KERN_INFO "%s%d: bios %d.%d-%d[%d]\n",
1304                         dev->name, dev->id,
1305                         tmp>>24,(tmp>>16)&0xff,tmp&0xff,
1306                         le32_to_cpu(dev->adapter_info.biosbuild));
1307                 buffer[0] = '\0';
1308                 if (aac_show_serial_number(
1309                   shost_to_class(dev->scsi_host_ptr), buffer))
1310                         printk(KERN_INFO "%s%d: serial %s",
1311                           dev->name, dev->id, buffer);
1312                 if (dev->supplement_adapter_info.VpdInfo.Tsid[0]) {
1313                         printk(KERN_INFO "%s%d: TSID %.*s\n",
1314                           dev->name, dev->id,
1315                           (int)sizeof(dev->supplement_adapter_info.VpdInfo.Tsid),
1316                           dev->supplement_adapter_info.VpdInfo.Tsid);
1317                 }
1318                 if (!aac_check_reset || ((aac_check_reset != 1) &&
1319                   (dev->supplement_adapter_info.SupportedOptions2 &
1320                   AAC_OPTION_IGNORE_RESET))) {
1321                         printk(KERN_INFO "%s%d: Reset Adapter Ignored\n",
1322                           dev->name, dev->id);
1323                 }
1324         }
1325
1326         dev->cache_protected = 0;
1327         dev->jbod = ((dev->supplement_adapter_info.FeatureBits &
1328                 AAC_FEATURE_JBOD) != 0);
1329         dev->nondasd_support = 0;
1330         dev->raid_scsi_mode = 0;
1331         if(dev->adapter_info.options & AAC_OPT_NONDASD)
1332                 dev->nondasd_support = 1;
1333
1334         /*
1335          * If the firmware supports ROMB RAID/SCSI mode and we are currently
1336          * in RAID/SCSI mode, set the flag. For now if in this mode we will
1337          * force nondasd support on. If we decide to allow the non-dasd flag
1338          * additional changes changes will have to be made to support
1339          * RAID/SCSI.  the function aac_scsi_cmd in this module will have to be
1340          * changed to support the new dev->raid_scsi_mode flag instead of
1341          * leaching off of the dev->nondasd_support flag. Also in linit.c the
1342          * function aac_detect will have to be modified where it sets up the
1343          * max number of channels based on the aac->nondasd_support flag only.
1344          */
1345         if ((dev->adapter_info.options & AAC_OPT_SCSI_MANAGED) &&
1346             (dev->adapter_info.options & AAC_OPT_RAID_SCSI_MODE)) {
1347                 dev->nondasd_support = 1;
1348                 dev->raid_scsi_mode = 1;
1349         }
1350         if (dev->raid_scsi_mode != 0)
1351                 printk(KERN_INFO "%s%d: ROMB RAID/SCSI mode enabled\n",
1352                                 dev->name, dev->id);
1353
1354         if (nondasd != -1)
1355                 dev->nondasd_support = (nondasd!=0);
1356         if(dev->nondasd_support != 0) {
1357                 printk(KERN_INFO "%s%d: Non-DASD support enabled.\n",dev->name, dev->id);
1358         }
1359
1360         dev->dac_support = 0;
1361         if( (sizeof(dma_addr_t) > 4) && (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)){
1362                 printk(KERN_INFO "%s%d: 64bit support enabled.\n", dev->name, dev->id);
1363                 dev->dac_support = 1;
1364         }
1365
1366         if(dacmode != -1) {
1367                 dev->dac_support = (dacmode!=0);
1368         }
1369         if(dev->dac_support != 0) {
1370                 if (!pci_set_dma_mask(dev->pdev, DMA_64BIT_MASK) &&
1371                         !pci_set_consistent_dma_mask(dev->pdev, DMA_64BIT_MASK)) {
1372                         printk(KERN_INFO"%s%d: 64 Bit DAC enabled\n",
1373                                 dev->name, dev->id);
1374                 } else if (!pci_set_dma_mask(dev->pdev, DMA_32BIT_MASK) &&
1375                         !pci_set_consistent_dma_mask(dev->pdev, DMA_32BIT_MASK)) {
1376                         printk(KERN_INFO"%s%d: DMA mask set failed, 64 Bit DAC disabled\n",
1377                                 dev->name, dev->id);
1378                         dev->dac_support = 0;
1379                 } else {
1380                         printk(KERN_WARNING"%s%d: No suitable DMA available.\n",
1381                                 dev->name, dev->id);
1382                         rcode = -ENOMEM;
1383                 }
1384         }
1385         /*
1386          * Deal with configuring for the individualized limits of each packet
1387          * interface.
1388          */
1389         dev->a_ops.adapter_scsi = (dev->dac_support)
1390           ? ((aac_get_driver_ident(dev->cardtype)->quirks & AAC_QUIRK_SCSI_32)
1391                                 ? aac_scsi_32_64
1392                                 : aac_scsi_64)
1393                                 : aac_scsi_32;
1394         if (dev->raw_io_interface) {
1395                 dev->a_ops.adapter_bounds = (dev->raw_io_64)
1396                                         ? aac_bounds_64
1397                                         : aac_bounds_32;
1398                 dev->a_ops.adapter_read = aac_read_raw_io;
1399                 dev->a_ops.adapter_write = aac_write_raw_io;
1400         } else {
1401                 dev->a_ops.adapter_bounds = aac_bounds_32;
1402                 dev->scsi_host_ptr->sg_tablesize = (dev->max_fib_size -
1403                         sizeof(struct aac_fibhdr) -
1404                         sizeof(struct aac_write) + sizeof(struct sgentry)) /
1405                                 sizeof(struct sgentry);
1406                 if (dev->dac_support) {
1407                         dev->a_ops.adapter_read = aac_read_block64;
1408                         dev->a_ops.adapter_write = aac_write_block64;
1409                         /*
1410                          * 38 scatter gather elements
1411                          */
1412                         dev->scsi_host_ptr->sg_tablesize =
1413                                 (dev->max_fib_size -
1414                                 sizeof(struct aac_fibhdr) -
1415                                 sizeof(struct aac_write64) +
1416                                 sizeof(struct sgentry64)) /
1417                                         sizeof(struct sgentry64);
1418                 } else {
1419                         dev->a_ops.adapter_read = aac_read_block;
1420                         dev->a_ops.adapter_write = aac_write_block;
1421                 }
1422                 dev->scsi_host_ptr->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
1423                 if(!(dev->adapter_info.options & AAC_OPT_NEW_COMM)) {
1424                         /*
1425                          * Worst case size that could cause sg overflow when
1426                          * we break up SG elements that are larger than 64KB.
1427                          * Would be nice if we could tell the SCSI layer what
1428                          * the maximum SG element size can be. Worst case is
1429                          * (sg_tablesize-1) 4KB elements with one 64KB
1430                          * element.
1431                          *      32bit -> 468 or 238KB   64bit -> 424 or 212KB
1432                          */
1433                         dev->scsi_host_ptr->max_sectors =
1434                           (dev->scsi_host_ptr->sg_tablesize * 8) + 112;
1435                 }
1436         }
1437
1438         aac_fib_complete(fibptr);
1439         aac_fib_free(fibptr);
1440
1441         return rcode;
1442 }
1443
1444
1445 static void io_callback(void *context, struct fib * fibptr)
1446 {
1447         struct aac_dev *dev;
1448         struct aac_read_reply *readreply;
1449         struct scsi_cmnd *scsicmd;
1450         u32 cid;
1451
1452         scsicmd = (struct scsi_cmnd *) context;
1453
1454         if (!aac_valid_context(scsicmd, fibptr))
1455                 return;
1456
1457         dev = fibptr->dev;
1458         cid = scmd_id(scsicmd);
1459
1460         if (nblank(dprintk(x))) {
1461                 u64 lba;
1462                 switch (scsicmd->cmnd[0]) {
1463                 case WRITE_6:
1464                 case READ_6:
1465                         lba = ((scsicmd->cmnd[1] & 0x1F) << 16) |
1466                             (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
1467                         break;
1468                 case WRITE_16:
1469                 case READ_16:
1470                         lba = ((u64)scsicmd->cmnd[2] << 56) |
1471                               ((u64)scsicmd->cmnd[3] << 48) |
1472                               ((u64)scsicmd->cmnd[4] << 40) |
1473                               ((u64)scsicmd->cmnd[5] << 32) |
1474                               ((u64)scsicmd->cmnd[6] << 24) |
1475                               (scsicmd->cmnd[7] << 16) |
1476                               (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
1477                         break;
1478                 case WRITE_12:
1479                 case READ_12:
1480                         lba = ((u64)scsicmd->cmnd[2] << 24) |
1481                               (scsicmd->cmnd[3] << 16) |
1482                               (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
1483                         break;
1484                 default:
1485                         lba = ((u64)scsicmd->cmnd[2] << 24) |
1486                                (scsicmd->cmnd[3] << 16) |
1487                                (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
1488                         break;
1489                 }
1490                 printk(KERN_DEBUG
1491                   "io_callback[cpu %d]: lba = %llu, t = %ld.\n",
1492                   smp_processor_id(), (unsigned long long)lba, jiffies);
1493         }
1494
1495         BUG_ON(fibptr == NULL);
1496
1497         scsi_dma_unmap(scsicmd);
1498
1499         readreply = (struct aac_read_reply *)fib_data(fibptr);
1500         if (le32_to_cpu(readreply->status) == ST_OK)
1501                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
1502         else {
1503 #ifdef AAC_DETAILED_STATUS_INFO
1504                 printk(KERN_WARNING "io_callback: io failed, status = %d\n",
1505                   le32_to_cpu(readreply->status));
1506 #endif
1507                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
1508                 set_sense(&dev->fsa_dev[cid].sense_data,
1509                   HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
1510                   ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
1511                 memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
1512                        min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
1513                              SCSI_SENSE_BUFFERSIZE));
1514         }
1515         aac_fib_complete(fibptr);
1516         aac_fib_free(fibptr);
1517
1518         scsicmd->scsi_done(scsicmd);
1519 }
1520
1521 static int aac_read(struct scsi_cmnd * scsicmd)
1522 {
1523         u64 lba;
1524         u32 count;
1525         int status;
1526         struct aac_dev *dev;
1527         struct fib * cmd_fibcontext;
1528
1529         dev = (struct aac_dev *)scsicmd->device->host->hostdata;
1530         /*
1531          *      Get block address and transfer length
1532          */
1533         switch (scsicmd->cmnd[0]) {
1534         case READ_6:
1535                 dprintk((KERN_DEBUG "aachba: received a read(6) command on id %d.\n", scmd_id(scsicmd)));
1536
1537                 lba = ((scsicmd->cmnd[1] & 0x1F) << 16) |
1538                         (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
1539                 count = scsicmd->cmnd[4];
1540
1541                 if (count == 0)
1542                         count = 256;
1543                 break;
1544         case READ_16:
1545                 dprintk((KERN_DEBUG "aachba: received a read(16) command on id %d.\n", scmd_id(scsicmd)));
1546
1547                 lba =   ((u64)scsicmd->cmnd[2] << 56) |
1548                         ((u64)scsicmd->cmnd[3] << 48) |
1549                         ((u64)scsicmd->cmnd[4] << 40) |
1550                         ((u64)scsicmd->cmnd[5] << 32) |
1551                         ((u64)scsicmd->cmnd[6] << 24) |
1552                         (scsicmd->cmnd[7] << 16) |
1553                         (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
1554                 count = (scsicmd->cmnd[10] << 24) |
1555                         (scsicmd->cmnd[11] << 16) |
1556                         (scsicmd->cmnd[12] << 8) | scsicmd->cmnd[13];
1557                 break;
1558         case READ_12:
1559                 dprintk((KERN_DEBUG "aachba: received a read(12) command on id %d.\n", scmd_id(scsicmd)));
1560
1561                 lba = ((u64)scsicmd->cmnd[2] << 24) |
1562                         (scsicmd->cmnd[3] << 16) |
1563                         (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
1564                 count = (scsicmd->cmnd[6] << 24) |
1565                         (scsicmd->cmnd[7] << 16) |
1566                         (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
1567                 break;
1568         default:
1569                 dprintk((KERN_DEBUG "aachba: received a read(10) command on id %d.\n", scmd_id(scsicmd)));
1570
1571                 lba = ((u64)scsicmd->cmnd[2] << 24) |
1572                         (scsicmd->cmnd[3] << 16) |
1573                         (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
1574                 count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
1575                 break;
1576         }
1577         dprintk((KERN_DEBUG "aac_read[cpu %d]: lba = %llu, t = %ld.\n",
1578           smp_processor_id(), (unsigned long long)lba, jiffies));
1579         if (aac_adapter_bounds(dev,scsicmd,lba))
1580                 return 0;
1581         /*
1582          *      Alocate and initialize a Fib
1583          */
1584         if (!(cmd_fibcontext = aac_fib_alloc(dev))) {
1585                 return -1;
1586         }
1587
1588         status = aac_adapter_read(cmd_fibcontext, scsicmd, lba, count);
1589
1590         /*
1591          *      Check that the command queued to the controller
1592          */
1593         if (status == -EINPROGRESS) {
1594                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
1595                 return 0;
1596         }
1597
1598         printk(KERN_WARNING "aac_read: aac_fib_send failed with status: %d.\n", status);
1599         /*
1600          *      For some reason, the Fib didn't queue, return QUEUE_FULL
1601          */
1602         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_TASK_SET_FULL;
1603         scsicmd->scsi_done(scsicmd);
1604         aac_fib_complete(cmd_fibcontext);
1605         aac_fib_free(cmd_fibcontext);
1606         return 0;
1607 }
1608
1609 static int aac_write(struct scsi_cmnd * scsicmd)
1610 {
1611         u64 lba;
1612         u32 count;
1613         int fua;
1614         int status;
1615         struct aac_dev *dev;
1616         struct fib * cmd_fibcontext;
1617
1618         dev = (struct aac_dev *)scsicmd->device->host->hostdata;
1619         /*
1620          *      Get block address and transfer length
1621          */
1622         if (scsicmd->cmnd[0] == WRITE_6)        /* 6 byte command */
1623         {
1624                 lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
1625                 count = scsicmd->cmnd[4];
1626                 if (count == 0)
1627                         count = 256;
1628                 fua = 0;
1629         } else if (scsicmd->cmnd[0] == WRITE_16) { /* 16 byte command */
1630                 dprintk((KERN_DEBUG "aachba: received a write(16) command on id %d.\n", scmd_id(scsicmd)));
1631
1632                 lba =   ((u64)scsicmd->cmnd[2] << 56) |
1633                         ((u64)scsicmd->cmnd[3] << 48) |
1634                         ((u64)scsicmd->cmnd[4] << 40) |
1635                         ((u64)scsicmd->cmnd[5] << 32) |
1636                         ((u64)scsicmd->cmnd[6] << 24) |
1637                         (scsicmd->cmnd[7] << 16) |
1638                         (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
1639                 count = (scsicmd->cmnd[10] << 24) | (scsicmd->cmnd[11] << 16) |
1640                         (scsicmd->cmnd[12] << 8) | scsicmd->cmnd[13];
1641                 fua = scsicmd->cmnd[1] & 0x8;
1642         } else if (scsicmd->cmnd[0] == WRITE_12) { /* 12 byte command */
1643                 dprintk((KERN_DEBUG "aachba: received a write(12) command on id %d.\n", scmd_id(scsicmd)));
1644
1645                 lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16)
1646                     | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
1647                 count = (scsicmd->cmnd[6] << 24) | (scsicmd->cmnd[7] << 16)
1648                       | (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
1649                 fua = scsicmd->cmnd[1] & 0x8;
1650         } else {
1651                 dprintk((KERN_DEBUG "aachba: received a write(10) command on id %d.\n", scmd_id(scsicmd)));
1652                 lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
1653                 count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
1654                 fua = scsicmd->cmnd[1] & 0x8;
1655         }
1656         dprintk((KERN_DEBUG "aac_write[cpu %d]: lba = %llu, t = %ld.\n",
1657           smp_processor_id(), (unsigned long long)lba, jiffies));
1658         if (aac_adapter_bounds(dev,scsicmd,lba))
1659                 return 0;
1660         /*
1661          *      Allocate and initialize a Fib then setup a BlockWrite command
1662          */
1663         if (!(cmd_fibcontext = aac_fib_alloc(dev))) {
1664                 scsicmd->result = DID_ERROR << 16;
1665                 scsicmd->scsi_done(scsicmd);
1666                 return 0;
1667         }
1668
1669         status = aac_adapter_write(cmd_fibcontext, scsicmd, lba, count, fua);
1670
1671         /*
1672          *      Check that the command queued to the controller
1673          */
1674         if (status == -EINPROGRESS) {
1675                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
1676                 return 0;
1677         }
1678
1679         printk(KERN_WARNING "aac_write: aac_fib_send failed with status: %d\n", status);
1680         /*
1681          *      For some reason, the Fib didn't queue, return QUEUE_FULL
1682          */
1683         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_TASK_SET_FULL;
1684         scsicmd->scsi_done(scsicmd);
1685
1686         aac_fib_complete(cmd_fibcontext);
1687         aac_fib_free(cmd_fibcontext);
1688         return 0;
1689 }
1690
1691 static void synchronize_callback(void *context, struct fib *fibptr)
1692 {
1693         struct aac_synchronize_reply *synchronizereply;
1694         struct scsi_cmnd *cmd;
1695
1696         cmd = context;
1697
1698         if (!aac_valid_context(cmd, fibptr))
1699                 return;
1700
1701         dprintk((KERN_DEBUG "synchronize_callback[cpu %d]: t = %ld.\n",
1702                                 smp_processor_id(), jiffies));
1703         BUG_ON(fibptr == NULL);
1704
1705
1706         synchronizereply = fib_data(fibptr);
1707         if (le32_to_cpu(synchronizereply->status) == CT_OK)
1708                 cmd->result = DID_OK << 16 |
1709                         COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
1710         else {
1711                 struct scsi_device *sdev = cmd->device;
1712                 struct aac_dev *dev = fibptr->dev;
1713                 u32 cid = sdev_id(sdev);
1714                 printk(KERN_WARNING
1715                      "synchronize_callback: synchronize failed, status = %d\n",
1716                      le32_to_cpu(synchronizereply->status));
1717                 cmd->result = DID_OK << 16 |
1718                         COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
1719                 set_sense(&dev->fsa_dev[cid].sense_data,
1720                   HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
1721                   ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
1722                 memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
1723                        min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
1724                              SCSI_SENSE_BUFFERSIZE));
1725         }
1726
1727         aac_fib_complete(fibptr);
1728         aac_fib_free(fibptr);
1729         cmd->scsi_done(cmd);
1730 }
1731
1732 static int aac_synchronize(struct scsi_cmnd *scsicmd)
1733 {
1734         int status;
1735         struct fib *cmd_fibcontext;
1736         struct aac_synchronize *synchronizecmd;
1737         struct scsi_cmnd *cmd;
1738         struct scsi_device *sdev = scsicmd->device;
1739         int active = 0;
1740         struct aac_dev *aac;
1741         u64 lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) |
1742                 (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
1743         u32 count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
1744         unsigned long flags;
1745
1746         /*
1747          * Wait for all outstanding queued commands to complete to this
1748          * specific target (block).
1749          */
1750         spin_lock_irqsave(&sdev->list_lock, flags);
1751         list_for_each_entry(cmd, &sdev->cmd_list, list)
1752                 if (cmd->SCp.phase == AAC_OWNER_FIRMWARE) {
1753                         u64 cmnd_lba;
1754                         u32 cmnd_count;
1755
1756                         if (cmd->cmnd[0] == WRITE_6) {
1757                                 cmnd_lba = ((cmd->cmnd[1] & 0x1F) << 16) |
1758                                         (cmd->cmnd[2] << 8) |
1759                                         cmd->cmnd[3];
1760                                 cmnd_count = cmd->cmnd[4];
1761                                 if (cmnd_count == 0)
1762                                         cmnd_count = 256;
1763                         } else if (cmd->cmnd[0] == WRITE_16) {
1764                                 cmnd_lba = ((u64)cmd->cmnd[2] << 56) |
1765                                         ((u64)cmd->cmnd[3] << 48) |
1766                                         ((u64)cmd->cmnd[4] << 40) |
1767                                         ((u64)cmd->cmnd[5] << 32) |
1768                                         ((u64)cmd->cmnd[6] << 24) |
1769                                         (cmd->cmnd[7] << 16) |
1770                                         (cmd->cmnd[8] << 8) |
1771                                         cmd->cmnd[9];
1772                                 cmnd_count = (cmd->cmnd[10] << 24) |
1773                                         (cmd->cmnd[11] << 16) |
1774                                         (cmd->cmnd[12] << 8) |
1775                                         cmd->cmnd[13];
1776                         } else if (cmd->cmnd[0] == WRITE_12) {
1777                                 cmnd_lba = ((u64)cmd->cmnd[2] << 24) |
1778                                         (cmd->cmnd[3] << 16) |
1779                                         (cmd->cmnd[4] << 8) |
1780                                         cmd->cmnd[5];
1781                                 cmnd_count = (cmd->cmnd[6] << 24) |
1782                                         (cmd->cmnd[7] << 16) |
1783                                         (cmd->cmnd[8] << 8) |
1784                                         cmd->cmnd[9];
1785                         } else if (cmd->cmnd[0] == WRITE_10) {
1786                                 cmnd_lba = ((u64)cmd->cmnd[2] << 24) |
1787                                         (cmd->cmnd[3] << 16) |
1788                                         (cmd->cmnd[4] << 8) |
1789                                         cmd->cmnd[5];
1790                                 cmnd_count = (cmd->cmnd[7] << 8) |
1791                                         cmd->cmnd[8];
1792                         } else
1793                                 continue;
1794                         if (((cmnd_lba + cmnd_count) < lba) ||
1795                           (count && ((lba + count) < cmnd_lba)))
1796                                 continue;
1797                         ++active;
1798                         break;
1799                 }
1800
1801         spin_unlock_irqrestore(&sdev->list_lock, flags);
1802
1803         /*
1804          *      Yield the processor (requeue for later)
1805          */
1806         if (active)
1807                 return SCSI_MLQUEUE_DEVICE_BUSY;
1808
1809         aac = (struct aac_dev *)sdev->host->hostdata;
1810         if (aac->in_reset)
1811                 return SCSI_MLQUEUE_HOST_BUSY;
1812
1813         /*
1814          *      Allocate and initialize a Fib
1815          */
1816         if (!(cmd_fibcontext = aac_fib_alloc(aac)))
1817                 return SCSI_MLQUEUE_HOST_BUSY;
1818
1819         aac_fib_init(cmd_fibcontext);
1820
1821         synchronizecmd = fib_data(cmd_fibcontext);
1822         synchronizecmd->command = cpu_to_le32(VM_ContainerConfig);
1823         synchronizecmd->type = cpu_to_le32(CT_FLUSH_CACHE);
1824         synchronizecmd->cid = cpu_to_le32(scmd_id(scsicmd));
1825         synchronizecmd->count =
1826              cpu_to_le32(sizeof(((struct aac_synchronize_reply *)NULL)->data));
1827
1828         /*
1829          *      Now send the Fib to the adapter
1830          */
1831         status = aac_fib_send(ContainerCommand,
1832                   cmd_fibcontext,
1833                   sizeof(struct aac_synchronize),
1834                   FsaNormal,
1835                   0, 1,
1836                   (fib_callback)synchronize_callback,
1837                   (void *)scsicmd);
1838
1839         /*
1840          *      Check that the command queued to the controller
1841          */
1842         if (status == -EINPROGRESS) {
1843                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
1844                 return 0;
1845         }
1846
1847         printk(KERN_WARNING
1848                 "aac_synchronize: aac_fib_send failed with status: %d.\n", status);
1849         aac_fib_complete(cmd_fibcontext);
1850         aac_fib_free(cmd_fibcontext);
1851         return SCSI_MLQUEUE_HOST_BUSY;
1852 }
1853
1854 /**
1855  *      aac_scsi_cmd()          -       Process SCSI command
1856  *      @scsicmd:               SCSI command block
1857  *
1858  *      Emulate a SCSI command and queue the required request for the
1859  *      aacraid firmware.
1860  */
1861
1862 int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
1863 {
1864         u32 cid;
1865         struct Scsi_Host *host = scsicmd->device->host;
1866         struct aac_dev *dev = (struct aac_dev *)host->hostdata;
1867         struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev;
1868
1869         if (fsa_dev_ptr == NULL)
1870                 return -1;
1871         /*
1872          *      If the bus, id or lun is out of range, return fail
1873          *      Test does not apply to ID 16, the pseudo id for the controller
1874          *      itself.
1875          */
1876         cid = scmd_id(scsicmd);
1877         if (cid != host->this_id) {
1878                 if (scmd_channel(scsicmd) == CONTAINER_CHANNEL) {
1879                         if((cid >= dev->maximum_num_containers) ||
1880                                         (scsicmd->device->lun != 0)) {
1881                                 scsicmd->result = DID_NO_CONNECT << 16;
1882                                 scsicmd->scsi_done(scsicmd);
1883                                 return 0;
1884                         }
1885
1886                         /*
1887                          *      If the target container doesn't exist, it may have
1888                          *      been newly created
1889                          */
1890                         if ((fsa_dev_ptr[cid].valid & 1) == 0) {
1891                                 switch (scsicmd->cmnd[0]) {
1892                                 case SERVICE_ACTION_IN:
1893                                         if (!(dev->raw_io_interface) ||
1894                                             !(dev->raw_io_64) ||
1895                                             ((scsicmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
1896                                                 break;
1897                                 case INQUIRY:
1898                                 case READ_CAPACITY:
1899                                 case TEST_UNIT_READY:
1900                                         if (dev->in_reset)
1901                                                 return -1;
1902                                         return _aac_probe_container(scsicmd,
1903                                                         aac_probe_container_callback2);
1904                                 default:
1905                                         break;
1906                                 }
1907                         }
1908                 } else {  /* check for physical non-dasd devices */
1909                         if (dev->nondasd_support || expose_physicals ||
1910                                         dev->jbod) {
1911                                 if (dev->in_reset)
1912                                         return -1;
1913                                 return aac_send_srb_fib(scsicmd);
1914                         } else {
1915                                 scsicmd->result = DID_NO_CONNECT << 16;
1916                                 scsicmd->scsi_done(scsicmd);
1917                                 return 0;
1918                         }
1919                 }
1920         }
1921         /*
1922          * else Command for the controller itself
1923          */
1924         else if ((scsicmd->cmnd[0] != INQUIRY) &&       /* only INQUIRY & TUR cmnd supported for controller */
1925                 (scsicmd->cmnd[0] != TEST_UNIT_READY))
1926         {
1927                 dprintk((KERN_WARNING "Only INQUIRY & TUR command supported for controller, rcvd = 0x%x.\n", scsicmd->cmnd[0]));
1928                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
1929                 set_sense(&dev->fsa_dev[cid].sense_data,
1930                   ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
1931                   ASENCODE_INVALID_COMMAND, 0, 0);
1932                 memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
1933                        min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
1934                              SCSI_SENSE_BUFFERSIZE));
1935                 scsicmd->scsi_done(scsicmd);
1936                 return 0;
1937         }
1938
1939
1940         /* Handle commands here that don't really require going out to the adapter */
1941         switch (scsicmd->cmnd[0]) {
1942         case INQUIRY:
1943         {
1944                 struct inquiry_data inq_data;
1945
1946                 dprintk((KERN_DEBUG "INQUIRY command, ID: %d.\n", cid));
1947                 memset(&inq_data, 0, sizeof (struct inquiry_data));
1948
1949                 if (scsicmd->cmnd[1] & 0x1) {
1950                         char *arr = (char *)&inq_data;
1951
1952                         /* EVPD bit set */
1953                         arr[0] = (scmd_id(scsicmd) == host->this_id) ?
1954                           INQD_PDT_PROC : INQD_PDT_DA;
1955                         if (scsicmd->cmnd[2] == 0) {
1956                                 /* supported vital product data pages */
1957                                 arr[3] = 2;
1958                                 arr[4] = 0x0;
1959                                 arr[5] = 0x80;
1960                                 arr[1] = scsicmd->cmnd[2];
1961                                 aac_internal_transfer(scsicmd, &inq_data, 0,
1962                                   sizeof(inq_data));
1963                                 scsicmd->result = DID_OK << 16 |
1964                                   COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
1965                         } else if (scsicmd->cmnd[2] == 0x80) {
1966                                 /* unit serial number page */
1967                                 arr[3] = setinqserial(dev, &arr[4],
1968                                   scmd_id(scsicmd));
1969                                 arr[1] = scsicmd->cmnd[2];
1970                                 aac_internal_transfer(scsicmd, &inq_data, 0,
1971                                   sizeof(inq_data));
1972                                 return aac_get_container_serial(scsicmd);
1973                         } else {
1974                                 /* vpd page not implemented */
1975                                 scsicmd->result = DID_OK << 16 |
1976                                   COMMAND_COMPLETE << 8 |
1977                                   SAM_STAT_CHECK_CONDITION;
1978                                 set_sense(&dev->fsa_dev[cid].sense_data,
1979                                   ILLEGAL_REQUEST, SENCODE_INVALID_CDB_FIELD,
1980                                   ASENCODE_NO_SENSE, 7, 2);
1981                                 memcpy(scsicmd->sense_buffer,
1982                                   &dev->fsa_dev[cid].sense_data,
1983                                   min_t(size_t,
1984                                         sizeof(dev->fsa_dev[cid].sense_data),
1985                                         SCSI_SENSE_BUFFERSIZE));
1986                         }
1987                         scsicmd->scsi_done(scsicmd);
1988                         return 0;
1989                 }
1990                 inq_data.inqd_ver = 2;  /* claim compliance to SCSI-2 */
1991                 inq_data.inqd_rdf = 2;  /* A response data format value of two indicates that the data shall be in the format specified in SCSI-2 */
1992                 inq_data.inqd_len = 31;
1993                 /*Format for "pad2" is  RelAdr | WBus32 | WBus16 |  Sync  | Linked |Reserved| CmdQue | SftRe */
1994                 inq_data.inqd_pad2= 0x32 ;       /*WBus16|Sync|CmdQue */
1995                 /*
1996                  *      Set the Vendor, Product, and Revision Level
1997                  *      see: <vendor>.c i.e. aac.c
1998                  */
1999                 if (cid == host->this_id) {
2000                         setinqstr(dev, (void *) (inq_data.inqd_vid), ARRAY_SIZE(container_types));
2001                         inq_data.inqd_pdt = INQD_PDT_PROC;      /* Processor device */
2002                         aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
2003                         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2004                         scsicmd->scsi_done(scsicmd);
2005                         return 0;
2006                 }
2007                 if (dev->in_reset)
2008                         return -1;
2009                 setinqstr(dev, (void *) (inq_data.inqd_vid), fsa_dev_ptr[cid].type);
2010                 inq_data.inqd_pdt = INQD_PDT_DA;        /* Direct/random access device */
2011                 aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
2012                 return aac_get_container_name(scsicmd);
2013         }
2014         case SERVICE_ACTION_IN:
2015                 if (!(dev->raw_io_interface) ||
2016                     !(dev->raw_io_64) ||
2017                     ((scsicmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
2018                         break;
2019         {
2020                 u64 capacity;
2021                 char cp[13];
2022
2023                 dprintk((KERN_DEBUG "READ CAPACITY_16 command.\n"));
2024                 capacity = fsa_dev_ptr[cid].size - 1;
2025                 cp[0] = (capacity >> 56) & 0xff;
2026                 cp[1] = (capacity >> 48) & 0xff;
2027                 cp[2] = (capacity >> 40) & 0xff;
2028                 cp[3] = (capacity >> 32) & 0xff;
2029                 cp[4] = (capacity >> 24) & 0xff;
2030                 cp[5] = (capacity >> 16) & 0xff;
2031                 cp[6] = (capacity >> 8) & 0xff;
2032                 cp[7] = (capacity >> 0) & 0xff;
2033                 cp[8] = 0;
2034                 cp[9] = 0;
2035                 cp[10] = 2;
2036                 cp[11] = 0;
2037                 cp[12] = 0;
2038                 aac_internal_transfer(scsicmd, cp, 0,
2039                   min_t(size_t, scsicmd->cmnd[13], sizeof(cp)));
2040                 if (sizeof(cp) < scsicmd->cmnd[13]) {
2041                         unsigned int len, offset = sizeof(cp);
2042
2043                         memset(cp, 0, offset);
2044                         do {
2045                                 len = min_t(size_t, scsicmd->cmnd[13] - offset,
2046                                                 sizeof(cp));
2047                                 aac_internal_transfer(scsicmd, cp, offset, len);
2048                         } while ((offset += len) < scsicmd->cmnd[13]);
2049                 }
2050
2051                 /* Do not cache partition table for arrays */
2052                 scsicmd->device->removable = 1;
2053
2054                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2055                 scsicmd->scsi_done(scsicmd);
2056
2057                 return 0;
2058         }
2059
2060         case READ_CAPACITY:
2061         {
2062                 u32 capacity;
2063                 char cp[8];
2064
2065                 dprintk((KERN_DEBUG "READ CAPACITY command.\n"));
2066                 if (fsa_dev_ptr[cid].size <= 0x100000000ULL)
2067                         capacity = fsa_dev_ptr[cid].size - 1;
2068                 else
2069                         capacity = (u32)-1;
2070
2071                 cp[0] = (capacity >> 24) & 0xff;
2072                 cp[1] = (capacity >> 16) & 0xff;
2073                 cp[2] = (capacity >> 8) & 0xff;
2074                 cp[3] = (capacity >> 0) & 0xff;
2075                 cp[4] = 0;
2076                 cp[5] = 0;
2077                 cp[6] = 2;
2078                 cp[7] = 0;
2079                 aac_internal_transfer(scsicmd, cp, 0, sizeof(cp));
2080                 /* Do not cache partition table for arrays */
2081                 scsicmd->device->removable = 1;
2082
2083                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2084                 scsicmd->scsi_done(scsicmd);
2085
2086                 return 0;
2087         }
2088
2089         case MODE_SENSE:
2090         {
2091                 char mode_buf[7];
2092                 int mode_buf_length = 4;
2093
2094                 dprintk((KERN_DEBUG "MODE SENSE command.\n"));
2095                 mode_buf[0] = 3;        /* Mode data length */
2096                 mode_buf[1] = 0;        /* Medium type - default */
2097                 mode_buf[2] = 0;        /* Device-specific param,
2098                                            bit 8: 0/1 = write enabled/protected
2099                                            bit 4: 0/1 = FUA enabled */
2100                 if (dev->raw_io_interface && ((aac_cache & 5) != 1))
2101                         mode_buf[2] = 0x10;
2102                 mode_buf[3] = 0;        /* Block descriptor length */
2103                 if (((scsicmd->cmnd[2] & 0x3f) == 8) ||
2104                   ((scsicmd->cmnd[2] & 0x3f) == 0x3f)) {
2105                         mode_buf[0] = 6;
2106                         mode_buf[4] = 8;
2107                         mode_buf[5] = 1;
2108                         mode_buf[6] = ((aac_cache & 6) == 2)
2109                                 ? 0 : 0x04; /* WCE */
2110                         mode_buf_length = 7;
2111                         if (mode_buf_length > scsicmd->cmnd[4])
2112                                 mode_buf_length = scsicmd->cmnd[4];
2113                 }
2114                 aac_internal_transfer(scsicmd, mode_buf, 0, mode_buf_length);
2115                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2116                 scsicmd->scsi_done(scsicmd);
2117
2118                 return 0;
2119         }
2120         case MODE_SENSE_10:
2121         {
2122                 char mode_buf[11];
2123                 int mode_buf_length = 8;
2124
2125                 dprintk((KERN_DEBUG "MODE SENSE 10 byte command.\n"));
2126                 mode_buf[0] = 0;        /* Mode data length (MSB) */
2127                 mode_buf[1] = 6;        /* Mode data length (LSB) */
2128                 mode_buf[2] = 0;        /* Medium type - default */
2129                 mode_buf[3] = 0;        /* Device-specific param,
2130                                            bit 8: 0/1 = write enabled/protected
2131                                            bit 4: 0/1 = FUA enabled */
2132                 if (dev->raw_io_interface && ((aac_cache & 5) != 1))
2133                         mode_buf[3] = 0x10;
2134                 mode_buf[4] = 0;        /* reserved */
2135                 mode_buf[5] = 0;        /* reserved */
2136                 mode_buf[6] = 0;        /* Block descriptor length (MSB) */
2137                 mode_buf[7] = 0;        /* Block descriptor length (LSB) */
2138                 if (((scsicmd->cmnd[2] & 0x3f) == 8) ||
2139                   ((scsicmd->cmnd[2] & 0x3f) == 0x3f)) {
2140                         mode_buf[1] = 9;
2141                         mode_buf[8] = 8;
2142                         mode_buf[9] = 1;
2143                         mode_buf[10] = ((aac_cache & 6) == 2)
2144                                 ? 0 : 0x04; /* WCE */
2145                         mode_buf_length = 11;
2146                         if (mode_buf_length > scsicmd->cmnd[8])
2147                                 mode_buf_length = scsicmd->cmnd[8];
2148                 }
2149                 aac_internal_transfer(scsicmd, mode_buf, 0, mode_buf_length);
2150
2151                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2152                 scsicmd->scsi_done(scsicmd);
2153
2154                 return 0;
2155         }
2156         case REQUEST_SENSE:
2157                 dprintk((KERN_DEBUG "REQUEST SENSE command.\n"));
2158                 memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data, sizeof (struct sense_data));
2159                 memset(&dev->fsa_dev[cid].sense_data, 0, sizeof (struct sense_data));
2160                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2161                 scsicmd->scsi_done(scsicmd);
2162                 return 0;
2163
2164         case ALLOW_MEDIUM_REMOVAL:
2165                 dprintk((KERN_DEBUG "LOCK command.\n"));
2166                 if (scsicmd->cmnd[4])
2167                         fsa_dev_ptr[cid].locked = 1;
2168                 else
2169                         fsa_dev_ptr[cid].locked = 0;
2170
2171                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2172                 scsicmd->scsi_done(scsicmd);
2173                 return 0;
2174         /*
2175          *      These commands are all No-Ops
2176          */
2177         case TEST_UNIT_READY:
2178         case RESERVE:
2179         case RELEASE:
2180         case REZERO_UNIT:
2181         case REASSIGN_BLOCKS:
2182         case SEEK_10:
2183         case START_STOP:
2184                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2185                 scsicmd->scsi_done(scsicmd);
2186                 return 0;
2187         }
2188
2189         switch (scsicmd->cmnd[0])
2190         {
2191                 case READ_6:
2192                 case READ_10:
2193                 case READ_12:
2194                 case READ_16:
2195                         if (dev->in_reset)
2196                                 return -1;
2197                         /*
2198                          *      Hack to keep track of ordinal number of the device that
2199                          *      corresponds to a container. Needed to convert
2200                          *      containers to /dev/sd device names
2201                          */
2202
2203                         if (scsicmd->request->rq_disk)
2204                                 strlcpy(fsa_dev_ptr[cid].devname,
2205                                 scsicmd->request->rq_disk->disk_name,
2206                                 min(sizeof(fsa_dev_ptr[cid].devname),
2207                                 sizeof(scsicmd->request->rq_disk->disk_name) + 1));
2208
2209                         return aac_read(scsicmd);
2210
2211                 case WRITE_6:
2212                 case WRITE_10:
2213                 case WRITE_12:
2214                 case WRITE_16:
2215                         if (dev->in_reset)
2216                                 return -1;
2217                         return aac_write(scsicmd);
2218
2219                 case SYNCHRONIZE_CACHE:
2220                         if (((aac_cache & 6) == 6) && dev->cache_protected) {
2221                                 scsicmd->result = DID_OK << 16 |
2222                                         COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
2223                                 scsicmd->scsi_done(scsicmd);
2224                                 return 0;
2225                         }
2226                         /* Issue FIB to tell Firmware to flush it's cache */
2227                         if ((aac_cache & 6) != 2)
2228                                 return aac_synchronize(scsicmd);
2229                         /* FALLTHRU */
2230                 default:
2231                         /*
2232                          *      Unhandled commands
2233                          */
2234                         dprintk((KERN_WARNING "Unhandled SCSI Command: 0x%x.\n", scsicmd->cmnd[0]));
2235                         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
2236                         set_sense(&dev->fsa_dev[cid].sense_data,
2237                           ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
2238                           ASENCODE_INVALID_COMMAND, 0, 0);
2239                         memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
2240                                 min_t(size_t,
2241                                       sizeof(dev->fsa_dev[cid].sense_data),
2242                                       SCSI_SENSE_BUFFERSIZE));
2243                         scsicmd->scsi_done(scsicmd);
2244                         return 0;
2245         }
2246 }
2247
2248 static int query_disk(struct aac_dev *dev, void __user *arg)
2249 {
2250         struct aac_query_disk qd;
2251         struct fsa_dev_info *fsa_dev_ptr;
2252
2253         fsa_dev_ptr = dev->fsa_dev;
2254         if (!fsa_dev_ptr)
2255                 return -EBUSY;
2256         if (copy_from_user(&qd, arg, sizeof (struct aac_query_disk)))
2257                 return -EFAULT;
2258         if (qd.cnum == -1)
2259                 qd.cnum = qd.id;
2260         else if ((qd.bus == -1) && (qd.id == -1) && (qd.lun == -1))
2261         {
2262                 if (qd.cnum < 0 || qd.cnum >= dev->maximum_num_containers)
2263                         return -EINVAL;
2264                 qd.instance = dev->scsi_host_ptr->host_no;
2265                 qd.bus = 0;
2266                 qd.id = CONTAINER_TO_ID(qd.cnum);
2267                 qd.lun = CONTAINER_TO_LUN(qd.cnum);
2268         }
2269         else return -EINVAL;
2270
2271         qd.valid = fsa_dev_ptr[qd.cnum].valid != 0;
2272         qd.locked = fsa_dev_ptr[qd.cnum].locked;
2273         qd.deleted = fsa_dev_ptr[qd.cnum].deleted;
2274
2275         if (fsa_dev_ptr[qd.cnum].devname[0] == '\0')
2276                 qd.unmapped = 1;
2277         else
2278                 qd.unmapped = 0;
2279
2280         strlcpy(qd.name, fsa_dev_ptr[qd.cnum].devname,
2281           min(sizeof(qd.name), sizeof(fsa_dev_ptr[qd.cnum].devname) + 1));
2282
2283         if (copy_to_user(arg, &qd, sizeof (struct aac_query_disk)))
2284                 return -EFAULT;
2285         return 0;
2286 }
2287
2288 static int force_delete_disk(struct aac_dev *dev, void __user *arg)
2289 {
2290         struct aac_delete_disk dd;
2291         struct fsa_dev_info *fsa_dev_ptr;
2292
2293         fsa_dev_ptr = dev->fsa_dev;
2294         if (!fsa_dev_ptr)
2295                 return -EBUSY;
2296
2297         if (copy_from_user(&dd, arg, sizeof (struct aac_delete_disk)))
2298                 return -EFAULT;
2299
2300         if (dd.cnum >= dev->maximum_num_containers)
2301                 return -EINVAL;
2302         /*
2303          *      Mark this container as being deleted.
2304          */
2305         fsa_dev_ptr[dd.cnum].deleted = 1;
2306         /*
2307          *      Mark the container as no longer valid
2308          */
2309         fsa_dev_ptr[dd.cnum].valid = 0;
2310         return 0;
2311 }
2312
2313 static int delete_disk(struct aac_dev *dev, void __user *arg)
2314 {
2315         struct aac_delete_disk dd;
2316         struct fsa_dev_info *fsa_dev_ptr;
2317
2318         fsa_dev_ptr = dev->fsa_dev;
2319         if (!fsa_dev_ptr)
2320                 return -EBUSY;
2321
2322         if (copy_from_user(&dd, arg, sizeof (struct aac_delete_disk)))
2323                 return -EFAULT;
2324
2325         if (dd.cnum >= dev->maximum_num_containers)
2326                 return -EINVAL;
2327         /*
2328          *      If the container is locked, it can not be deleted by the API.
2329          */
2330         if (fsa_dev_ptr[dd.cnum].locked)
2331                 return -EBUSY;
2332         else {
2333                 /*
2334                  *      Mark the container as no longer being valid.
2335                  */
2336                 fsa_dev_ptr[dd.cnum].valid = 0;
2337                 fsa_dev_ptr[dd.cnum].devname[0] = '\0';
2338                 return 0;
2339         }
2340 }
2341
2342 int aac_dev_ioctl(struct aac_dev *dev, int cmd, void __user *arg)
2343 {
2344         switch (cmd) {
2345         case FSACTL_QUERY_DISK:
2346                 return query_disk(dev, arg);
2347         case FSACTL_DELETE_DISK:
2348                 return delete_disk(dev, arg);
2349         case FSACTL_FORCE_DELETE_DISK:
2350                 return force_delete_disk(dev, arg);
2351         case FSACTL_GET_CONTAINERS:
2352                 return aac_get_containers(dev);
2353         default:
2354                 return -ENOTTY;
2355         }
2356 }
2357
2358 /**
2359  *
2360  * aac_srb_callback
2361  * @context: the context set in the fib - here it is scsi cmd
2362  * @fibptr: pointer to the fib
2363  *
2364  * Handles the completion of a scsi command to a non dasd device
2365  *
2366  */
2367
2368 static void aac_srb_callback(void *context, struct fib * fibptr)
2369 {
2370         struct aac_dev *dev;
2371         struct aac_srb_reply *srbreply;
2372         struct scsi_cmnd *scsicmd;
2373
2374         scsicmd = (struct scsi_cmnd *) context;
2375
2376         if (!aac_valid_context(scsicmd, fibptr))
2377                 return;
2378
2379         BUG_ON(fibptr == NULL);
2380
2381         dev = fibptr->dev;
2382
2383         srbreply = (struct aac_srb_reply *) fib_data(fibptr);
2384
2385         scsicmd->sense_buffer[0] = '\0';  /* Initialize sense valid flag to false */
2386         /*
2387          *      Calculate resid for sg
2388          */
2389
2390         scsi_set_resid(scsicmd, scsi_bufflen(scsicmd)
2391                        - le32_to_cpu(srbreply->data_xfer_length));
2392
2393         scsi_dma_unmap(scsicmd);
2394
2395         /*
2396          * First check the fib status
2397          */
2398
2399         if (le32_to_cpu(srbreply->status) != ST_OK){
2400                 int len;
2401                 printk(KERN_WARNING "aac_srb_callback: srb failed, status = %d\n", le32_to_cpu(srbreply->status));
2402                 len = min_t(u32, le32_to_cpu(srbreply->sense_data_size),
2403                             SCSI_SENSE_BUFFERSIZE);
2404                 scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
2405                 memcpy(scsicmd->sense_buffer, srbreply->sense_data, len);
2406         }
2407
2408         /*
2409          * Next check the srb status
2410          */
2411         switch( (le32_to_cpu(srbreply->srb_status))&0x3f){
2412         case SRB_STATUS_ERROR_RECOVERY:
2413         case SRB_STATUS_PENDING:
2414         case SRB_STATUS_SUCCESS:
2415                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
2416                 break;
2417         case SRB_STATUS_DATA_OVERRUN:
2418                 switch(scsicmd->cmnd[0]){
2419                 case  READ_6:
2420                 case  WRITE_6:
2421                 case  READ_10:
2422                 case  WRITE_10:
2423                 case  READ_12:
2424                 case  WRITE_12:
2425                 case  READ_16:
2426                 case  WRITE_16:
2427                         if (le32_to_cpu(srbreply->data_xfer_length) < scsicmd->underflow) {
2428                                 printk(KERN_WARNING"aacraid: SCSI CMD underflow\n");
2429                         } else {
2430                                 printk(KERN_WARNING"aacraid: SCSI CMD Data Overrun\n");
2431                         }
2432                         scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
2433                         break;
2434                 case INQUIRY: {
2435                         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
2436                         break;
2437                 }
2438                 default:
2439                         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
2440                         break;
2441                 }
2442                 break;
2443         case SRB_STATUS_ABORTED:
2444                 scsicmd->result = DID_ABORT << 16 | ABORT << 8;
2445                 break;
2446         case SRB_STATUS_ABORT_FAILED:
2447                 // Not sure about this one - but assuming the hba was trying to abort for some reason
2448                 scsicmd->result = DID_ERROR << 16 | ABORT << 8;
2449                 break;
2450         case SRB_STATUS_PARITY_ERROR:
2451                 scsicmd->result = DID_PARITY << 16 | MSG_PARITY_ERROR << 8;
2452                 break;
2453         case SRB_STATUS_NO_DEVICE:
2454         case SRB_STATUS_INVALID_PATH_ID:
2455         case SRB_STATUS_INVALID_TARGET_ID:
2456         case SRB_STATUS_INVALID_LUN:
2457         case SRB_STATUS_SELECTION_TIMEOUT:
2458                 scsicmd->result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
2459                 break;
2460
2461         case SRB_STATUS_COMMAND_TIMEOUT:
2462         case SRB_STATUS_TIMEOUT:
2463                 scsicmd->result = DID_TIME_OUT << 16 | COMMAND_COMPLETE << 8;
2464                 break;
2465
2466         case SRB_STATUS_BUSY:
2467                 scsicmd->result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
2468                 break;
2469
2470         case SRB_STATUS_BUS_RESET:
2471                 scsicmd->result = DID_RESET << 16 | COMMAND_COMPLETE << 8;
2472                 break;
2473
2474         case SRB_STATUS_MESSAGE_REJECTED:
2475                 scsicmd->result = DID_ERROR << 16 | MESSAGE_REJECT << 8;
2476                 break;
2477         case SRB_STATUS_REQUEST_FLUSHED:
2478         case SRB_STATUS_ERROR:
2479         case SRB_STATUS_INVALID_REQUEST:
2480         case SRB_STATUS_REQUEST_SENSE_FAILED:
2481         case SRB_STATUS_NO_HBA:
2482         case SRB_STATUS_UNEXPECTED_BUS_FREE:
2483         case SRB_STATUS_PHASE_SEQUENCE_FAILURE:
2484         case SRB_STATUS_BAD_SRB_BLOCK_LENGTH:
2485         case SRB_STATUS_DELAYED_RETRY:
2486         case SRB_STATUS_BAD_FUNCTION:
2487         case SRB_STATUS_NOT_STARTED:
2488         case SRB_STATUS_NOT_IN_USE:
2489         case SRB_STATUS_FORCE_ABORT:
2490         case SRB_STATUS_DOMAIN_VALIDATION_FAIL:
2491         default:
2492 #ifdef AAC_DETAILED_STATUS_INFO
2493                 printk("aacraid: SRB ERROR(%u) %s scsi cmd 0x%x - scsi status 0x%x\n",
2494                         le32_to_cpu(srbreply->srb_status) & 0x3F,
2495                         aac_get_status_string(
2496                                 le32_to_cpu(srbreply->srb_status) & 0x3F),
2497                         scsicmd->cmnd[0],
2498                         le32_to_cpu(srbreply->scsi_status));
2499 #endif
2500                 scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
2501                 break;
2502         }
2503         if (le32_to_cpu(srbreply->scsi_status) == SAM_STAT_CHECK_CONDITION) {
2504                 int len;
2505                 scsicmd->result |= SAM_STAT_CHECK_CONDITION;
2506                 len = min_t(u32, le32_to_cpu(srbreply->sense_data_size),
2507                             SCSI_SENSE_BUFFERSIZE);
2508 #ifdef AAC_DETAILED_STATUS_INFO
2509                 printk(KERN_WARNING "aac_srb_callback: check condition, status = %d len=%d\n",
2510                                         le32_to_cpu(srbreply->status), len);
2511 #endif
2512                 memcpy(scsicmd->sense_buffer, srbreply->sense_data, len);
2513         }
2514         /*
2515          * OR in the scsi status (already shifted up a bit)
2516          */
2517         scsicmd->result |= le32_to_cpu(srbreply->scsi_status);
2518
2519         aac_fib_complete(fibptr);
2520         aac_fib_free(fibptr);
2521         scsicmd->scsi_done(scsicmd);
2522 }
2523
2524 /**
2525  *
2526  * aac_send_scb_fib
2527  * @scsicmd: the scsi command block
2528  *
2529  * This routine will form a FIB and fill in the aac_srb from the
2530  * scsicmd passed in.
2531  */
2532
2533 static int aac_send_srb_fib(struct scsi_cmnd* scsicmd)
2534 {
2535         struct fib* cmd_fibcontext;
2536         struct aac_dev* dev;
2537         int status;
2538
2539         dev = (struct aac_dev *)scsicmd->device->host->hostdata;
2540         if (scmd_id(scsicmd) >= dev->maximum_num_physicals ||
2541                         scsicmd->device->lun > 7) {
2542                 scsicmd->result = DID_NO_CONNECT << 16;
2543                 scsicmd->scsi_done(scsicmd);
2544                 return 0;
2545         }
2546
2547         /*
2548          *      Allocate and initialize a Fib then setup a BlockWrite command
2549          */
2550         if (!(cmd_fibcontext = aac_fib_alloc(dev))) {
2551                 return -1;
2552         }
2553         status = aac_adapter_scsi(cmd_fibcontext, scsicmd);
2554
2555         /*
2556          *      Check that the command queued to the controller
2557          */
2558         if (status == -EINPROGRESS) {
2559                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
2560                 return 0;
2561         }
2562
2563         printk(KERN_WARNING "aac_srb: aac_fib_send failed with status: %d\n", status);
2564         aac_fib_complete(cmd_fibcontext);
2565         aac_fib_free(cmd_fibcontext);
2566
2567         return -1;
2568 }
2569
2570 static unsigned long aac_build_sg(struct scsi_cmnd* scsicmd, struct sgmap* psg)
2571 {
2572         struct aac_dev *dev;
2573         unsigned long byte_count = 0;
2574         int nseg;
2575
2576         dev = (struct aac_dev *)scsicmd->device->host->hostdata;
2577         // Get rid of old data
2578         psg->count = 0;
2579         psg->sg[0].addr = 0;
2580         psg->sg[0].count = 0;
2581
2582         nseg = scsi_dma_map(scsicmd);
2583         BUG_ON(nseg < 0);
2584         if (nseg) {
2585                 struct scatterlist *sg;
2586                 int i;
2587
2588                 psg->count = cpu_to_le32(nseg);
2589
2590                 scsi_for_each_sg(scsicmd, sg, nseg, i) {
2591                         psg->sg[i].addr = cpu_to_le32(sg_dma_address(sg));
2592                         psg->sg[i].count = cpu_to_le32(sg_dma_len(sg));
2593                         byte_count += sg_dma_len(sg);
2594                 }
2595                 /* hba wants the size to be exact */
2596                 if (byte_count > scsi_bufflen(scsicmd)) {
2597                         u32 temp = le32_to_cpu(psg->sg[i-1].count) -
2598                                 (byte_count - scsi_bufflen(scsicmd));
2599                         psg->sg[i-1].count = cpu_to_le32(temp);
2600                         byte_count = scsi_bufflen(scsicmd);
2601                 }
2602                 /* Check for command underflow */
2603                 if(scsicmd->underflow && (byte_count < scsicmd->underflow)){
2604                         printk(KERN_WARNING"aacraid: cmd len %08lX cmd underflow %08X\n",
2605                                         byte_count, scsicmd->underflow);
2606                 }
2607         }
2608         return byte_count;
2609 }
2610
2611
2612 static unsigned long aac_build_sg64(struct scsi_cmnd* scsicmd, struct sgmap64* psg)
2613 {
2614         struct aac_dev *dev;
2615         unsigned long byte_count = 0;
2616         u64 addr;
2617         int nseg;
2618
2619         dev = (struct aac_dev *)scsicmd->device->host->hostdata;
2620         // Get rid of old data
2621         psg->count = 0;
2622         psg->sg[0].addr[0] = 0;
2623         psg->sg[0].addr[1] = 0;
2624         psg->sg[0].count = 0;
2625
2626         nseg = scsi_dma_map(scsicmd);
2627         BUG_ON(nseg < 0);
2628         if (nseg) {
2629                 struct scatterlist *sg;
2630                 int i;
2631
2632                 scsi_for_each_sg(scsicmd, sg, nseg, i) {
2633                         int count = sg_dma_len(sg);
2634                         addr = sg_dma_address(sg);
2635                         psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
2636                         psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
2637                         psg->sg[i].count = cpu_to_le32(count);
2638                         byte_count += count;
2639                 }
2640                 psg->count = cpu_to_le32(nseg);
2641                 /* hba wants the size to be exact */
2642                 if (byte_count > scsi_bufflen(scsicmd)) {
2643                         u32 temp = le32_to_cpu(psg->sg[i-1].count) -
2644                                 (byte_count - scsi_bufflen(scsicmd));
2645                         psg->sg[i-1].count = cpu_to_le32(temp);
2646                         byte_count = scsi_bufflen(scsicmd);
2647                 }
2648                 /* Check for command underflow */
2649                 if(scsicmd->underflow && (byte_count < scsicmd->underflow)){
2650                         printk(KERN_WARNING"aacraid: cmd len %08lX cmd underflow %08X\n",
2651                                         byte_count, scsicmd->underflow);
2652                 }
2653         }
2654         return byte_count;
2655 }
2656
2657 static unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg)
2658 {
2659         unsigned long byte_count = 0;
2660         int nseg;
2661
2662         // Get rid of old data
2663         psg->count = 0;
2664         psg->sg[0].next = 0;
2665         psg->sg[0].prev = 0;
2666         psg->sg[0].addr[0] = 0;
2667         psg->sg[0].addr[1] = 0;
2668         psg->sg[0].count = 0;
2669         psg->sg[0].flags = 0;
2670
2671         nseg = scsi_dma_map(scsicmd);
2672         BUG_ON(nseg < 0);
2673         if (nseg) {
2674                 struct scatterlist *sg;
2675                 int i;
2676
2677                 scsi_for_each_sg(scsicmd, sg, nseg, i) {
2678                         int count = sg_dma_len(sg);
2679                         u64 addr = sg_dma_address(sg);
2680                         psg->sg[i].next = 0;
2681                         psg->sg[i].prev = 0;
2682                         psg->sg[i].addr[1] = cpu_to_le32((u32)(addr>>32));
2683                         psg->sg[i].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
2684                         psg->sg[i].count = cpu_to_le32(count);
2685                         psg->sg[i].flags = 0;
2686                         byte_count += count;
2687                 }
2688                 psg->count = cpu_to_le32(nseg);
2689                 /* hba wants the size to be exact */
2690                 if (byte_count > scsi_bufflen(scsicmd)) {
2691                         u32 temp = le32_to_cpu(psg->sg[i-1].count) -
2692                                 (byte_count - scsi_bufflen(scsicmd));
2693                         psg->sg[i-1].count = cpu_to_le32(temp);
2694                         byte_count = scsi_bufflen(scsicmd);
2695                 }
2696                 /* Check for command underflow */
2697                 if(scsicmd->underflow && (byte_count < scsicmd->underflow)){
2698                         printk(KERN_WARNING"aacraid: cmd len %08lX cmd underflow %08X\n",
2699                                         byte_count, scsicmd->underflow);
2700                 }
2701         }
2702         return byte_count;
2703 }
2704
2705 #ifdef AAC_DETAILED_STATUS_INFO
2706
2707 struct aac_srb_status_info {
2708         u32     status;
2709         char    *str;
2710 };
2711
2712
2713 static struct aac_srb_status_info srb_status_info[] = {
2714         { SRB_STATUS_PENDING,           "Pending Status"},
2715         { SRB_STATUS_SUCCESS,           "Success"},
2716         { SRB_STATUS_ABORTED,           "Aborted Command"},
2717         { SRB_STATUS_ABORT_FAILED,      "Abort Failed"},
2718         { SRB_STATUS_ERROR,             "Error Event"},
2719         { SRB_STATUS_BUSY,              "Device Busy"},
2720         { SRB_STATUS_INVALID_REQUEST,   "Invalid Request"},
2721         { SRB_STATUS_INVALID_PATH_ID,   "Invalid Path ID"},
2722         { SRB_STATUS_NO_DEVICE,         "No Device"},
2723         { SRB_STATUS_TIMEOUT,           "Timeout"},
2724         { SRB_STATUS_SELECTION_TIMEOUT, "Selection Timeout"},
2725         { SRB_STATUS_COMMAND_TIMEOUT,   "Command Timeout"},
2726         { SRB_STATUS_MESSAGE_REJECTED,  "Message Rejected"},
2727         { SRB_STATUS_BUS_RESET,         "Bus Reset"},
2728         { SRB_STATUS_PARITY_ERROR,      "Parity Error"},
2729         { SRB_STATUS_REQUEST_SENSE_FAILED,"Request Sense Failed"},
2730         { SRB_STATUS_NO_HBA,            "No HBA"},
2731         { SRB_STATUS_DATA_OVERRUN,      "Data Overrun/Data Underrun"},
2732         { SRB_STATUS_UNEXPECTED_BUS_FREE,"Unexpected Bus Free"},
2733         { SRB_STATUS_PHASE_SEQUENCE_FAILURE,"Phase Error"},
2734         { SRB_STATUS_BAD_SRB_BLOCK_LENGTH,"Bad Srb Block Length"},
2735         { SRB_STATUS_REQUEST_FLUSHED,   "Request Flushed"},
2736         { SRB_STATUS_DELAYED_RETRY,     "Delayed Retry"},
2737         { SRB_STATUS_INVALID_LUN,       "Invalid LUN"},
2738         { SRB_STATUS_INVALID_TARGET_ID, "Invalid TARGET ID"},
2739         { SRB_STATUS_BAD_FUNCTION,      "Bad Function"},
2740         { SRB_STATUS_ERROR_RECOVERY,    "Error Recovery"},
2741         { SRB_STATUS_NOT_STARTED,       "Not Started"},
2742         { SRB_STATUS_NOT_IN_USE,        "Not In Use"},
2743         { SRB_STATUS_FORCE_ABORT,       "Force Abort"},
2744         { SRB_STATUS_DOMAIN_VALIDATION_FAIL,"Domain Validation Failure"},
2745         { 0xff,                         "Unknown Error"}
2746 };
2747
2748 char *aac_get_status_string(u32 status)
2749 {
2750         int i;
2751
2752         for (i = 0; i < ARRAY_SIZE(srb_status_info); i++)
2753                 if (srb_status_info[i].status == status)
2754                         return srb_status_info[i].str;
2755
2756         return "Bad Status Code";
2757 }
2758
2759 #endif