drivers/scsi/pm8001/pm8001_ctl.c

   1 /*
   2  * PMC-Sierra SPC 8001 SAS/SATA based host adapters driver
   3  *
   4  * Copyright (c) 2008-2009 USI Co., Ltd.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification.
  13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  14  *    substantially similar to the "NO WARRANTY" disclaimer below
  15  *    ("Disclaimer") and any redistribution must be conditioned upon
  16  *    including a substantially similar Disclaimer requirement for further
  17  *    binary redistribution.
  18  * 3. Neither the names of the above-listed copyright holders nor the names
  19  *    of any contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * Alternatively, this software may be distributed under the terms of the
  23  * GNU General Public License ("GPL") version 2 as published by the Free
  24  * Software Foundation.
  25  *
  26  * NO WARRANTY
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  30  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  31  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  36  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGES.
  38  *
  39  */
  40 #include <linux/firmware.h>
  41 #include <linux/slab.h>
  42 #include "pm8001_sas.h"
  43 #include "pm8001_ctl.h"
  44
  45 /* scsi host attributes */
  46
  47 /**
  48  * pm8001_ctl_mpi_interface_rev_show - MPI interface revision number
  49  * @cdev: pointer to embedded class device
  50  * @buf: the buffer returned
  51  *
  52  * A sysfs 'read-only' shost attribute.
  53  */
  54 static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
  55         struct device_attribute *attr, char *buf)
  56 {
  57         struct Scsi_Host *shost = class_to_shost(cdev);
  58         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  59         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  60
  61         return snprintf(buf, PAGE_SIZE, "%d\n",
  62                 pm8001_ha->main_cfg_tbl.interface_rev);
  63 }
  64 static
  65 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
  66
  67 /**
  68  * pm8001_ctl_fw_version_show - firmware version
  69  * @cdev: pointer to embedded class device
  70  * @buf: the buffer returned
  71  *
  72  * A sysfs 'read-only' shost attribute.
  73  */
  74 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
  75         struct device_attribute *attr, char *buf)
  76 {
  77         struct Scsi_Host *shost = class_to_shost(cdev);
  78         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  79         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  80
  81         return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
  82                        (u8)(pm8001_ha->main_cfg_tbl.firmware_rev >> 24),
  83                        (u8)(pm8001_ha->main_cfg_tbl.firmware_rev >> 16),
  84                        (u8)(pm8001_ha->main_cfg_tbl.firmware_rev >> 8),
  85                        (u8)(pm8001_ha->main_cfg_tbl.firmware_rev));
  86 }
  87 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
  88 /**
  89  * pm8001_ctl_max_out_io_show - max outstanding io supported
  90  * @cdev: pointer to embedded class device
  91  * @buf: the buffer returned
  92  *
  93  * A sysfs 'read-only' shost attribute.
  94  */
  95 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
  96         struct device_attribute *attr, char *buf)
  97 {
  98         struct Scsi_Host *shost = class_to_shost(cdev);
  99         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 100         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 101
 102         return snprintf(buf, PAGE_SIZE, "%d\n",
 103                         pm8001_ha->main_cfg_tbl.max_out_io);
 104 }
 105 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
 106 /**
 107  * pm8001_ctl_max_devices_show - max devices support
 108  * @cdev: pointer to embedded class device
 109  * @buf: the buffer returned
 110  *
 111  * A sysfs 'read-only' shost attribute.
 112  */
 113 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
 114         struct device_attribute *attr, char *buf)
 115 {
 116         struct Scsi_Host *shost = class_to_shost(cdev);
 117         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 118         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 119
 120         return snprintf(buf, PAGE_SIZE, "%04d\n",
 121                         (u16)(pm8001_ha->main_cfg_tbl.max_sgl >> 16));
 122 }
 123 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
 124 /**
 125  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
 126  * hardware limitation
 127  * @cdev: pointer to embedded class device
 128  * @buf: the buffer returned
 129  *
 130  * A sysfs 'read-only' shost attribute.
 131  */
 132 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
 133         struct device_attribute *attr, char *buf)
 134 {
 135         struct Scsi_Host *shost = class_to_shost(cdev);
 136         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 137         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 138
 139         return snprintf(buf, PAGE_SIZE, "%04d\n",
 140                         pm8001_ha->main_cfg_tbl.max_sgl & 0x0000FFFF);
 141 }
 142 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
 143
 144 #define SAS_1_0 0x1
 145 #define SAS_1_1 0x2
 146 #define SAS_2_0 0x4
 147
 148 static ssize_t
 149 show_sas_spec_support_status(unsigned int mode, char *buf)
 150 {
 151         ssize_t len = 0;
 152
 153         if (mode & SAS_1_1)
 154                 len = sprintf(buf, "%s", "SAS1.1");
 155         if (mode & SAS_2_0)
 156                 len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
 157         len += sprintf(buf + len, "\n");
 158
 159         return len;
 160 }
 161
 162 /**
 163  * pm8001_ctl_sas_spec_support_show - sas spec supported
 164  * @cdev: pointer to embedded class device
 165  * @buf: the buffer returned
 166  *
 167  * A sysfs 'read-only' shost attribute.
 168  */
 169 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
 170         struct device_attribute *attr, char *buf)
 171 {
 172         unsigned int mode;
 173         struct Scsi_Host *shost = class_to_shost(cdev);
 174         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 175         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 176         mode = (pm8001_ha->main_cfg_tbl.ctrl_cap_flag & 0xfe000000)>>25;
 177         return show_sas_spec_support_status(mode, buf);
 178 }
 179 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
 180                    pm8001_ctl_sas_spec_support_show, NULL);
 181
 182 /**
 183  * pm8001_ctl_sas_address_show - sas address
 184  * @cdev: pointer to embedded class device
 185  * @buf: the buffer returned
 186  *
 187  * This is the controller sas address
 188  *
 189  * A sysfs 'read-only' shost attribute.
 190  */
 191 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
 192         struct device_attribute *attr, char *buf)
 193 {
 194         struct Scsi_Host *shost = class_to_shost(cdev);
 195         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 196         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 197         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
 198                         be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
 199 }
 200 static DEVICE_ATTR(host_sas_address, S_IRUGO,
 201                    pm8001_ctl_host_sas_address_show, NULL);
 202
 203 /**
 204  * pm8001_ctl_logging_level_show - logging level
 205  * @cdev: pointer to embedded class device
 206  * @buf: the buffer returned
 207  *
 208  * A sysfs 'read/write' shost attribute.
 209  */
 210 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
 211         struct device_attribute *attr, char *buf)
 212 {
 213         struct Scsi_Host *shost = class_to_shost(cdev);
 214         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 215         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 216
 217         return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
 218 }
 219 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
 220         struct device_attribute *attr, const char *buf, size_t count)
 221 {
 222         struct Scsi_Host *shost = class_to_shost(cdev);
 223         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 224         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 225         int val = 0;
 226
 227         if (sscanf(buf, "%x", &val) != 1)
 228                 return -EINVAL;
 229
 230         pm8001_ha->logging_level = val;
 231         return strlen(buf);
 232 }
 233
 234 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
 235         pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
 236 /**
 237  * pm8001_ctl_aap_log_show - aap1 event log
 238  * @cdev: pointer to embedded class device
 239  * @buf: the buffer returned
 240  *
 241  * A sysfs 'read-only' shost attribute.
 242  */
 243 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
 244         struct device_attribute *attr, char *buf)
 245 {
 246         struct Scsi_Host *shost = class_to_shost(cdev);
 247         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 248         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 249         int i;
 250 #define AAP1_MEMMAP(r, c) \
 251         (*(u32 *)((u8*)pm8001_ha->memoryMap.region[AAP1].virt_ptr + (r) * 32 \
 252         + (c)))
 253
 254         char *str = buf;
 255         int max = 2;
 256         for (i = 0; i < max; i++) {
 257                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 258                                "0x%08x 0x%08x\n",
 259                                AAP1_MEMMAP(i, 0),
 260                                AAP1_MEMMAP(i, 4),
 261                                AAP1_MEMMAP(i, 8),
 262                                AAP1_MEMMAP(i, 12),
 263                                AAP1_MEMMAP(i, 16),
 264                                AAP1_MEMMAP(i, 20),
 265                                AAP1_MEMMAP(i, 24),
 266                                AAP1_MEMMAP(i, 28));
 267         }
 268
 269         return str - buf;
 270 }
 271 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
 272 /**
 273  * pm8001_ctl_aap_log_show - IOP event log
 274  * @cdev: pointer to embedded class device
 275  * @buf: the buffer returned
 276  *
 277  * A sysfs 'read-only' shost attribute.
 278  */
 279 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 280         struct device_attribute *attr, char *buf)
 281 {
 282         struct Scsi_Host *shost = class_to_shost(cdev);
 283         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 284         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 285 #define IOP_MEMMAP(r, c) \
 286         (*(u32 *)((u8*)pm8001_ha->memoryMap.region[IOP].virt_ptr + (r) * 32 \
 287         + (c)))
 288         int i;
 289         char *str = buf;
 290         int max = 2;
 291         for (i = 0; i < max; i++) {
 292                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 293                                "0x%08x 0x%08x\n",
 294                                IOP_MEMMAP(i, 0),
 295                                IOP_MEMMAP(i, 4),
 296                                IOP_MEMMAP(i, 8),
 297                                IOP_MEMMAP(i, 12),
 298                                IOP_MEMMAP(i, 16),
 299                                IOP_MEMMAP(i, 20),
 300                                IOP_MEMMAP(i, 24),
 301                                IOP_MEMMAP(i, 28));
 302         }
 303
 304         return str - buf;
 305 }
 306 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 307
 308 #define FLASH_CMD_NONE      0x00
 309 #define FLASH_CMD_UPDATE    0x01
 310 #define FLASH_CMD_SET_NVMD    0x02
 311
 312 struct flash_command {
 313      u8      command[8];
 314      int     code;
 315 };
 316
 317 static struct flash_command flash_command_table[] =
 318 {
 319      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 320      {"update",      FLASH_CMD_UPDATE},
 321      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 322 };
 323
 324 struct error_fw {
 325      char    *reason;
 326      int     err_code;
 327 };
 328
 329 static struct error_fw flash_error_table[] =
 330 {
 331      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 332      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 333      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 334      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 335      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 336      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 337      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 338      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 339      {"Flash in progress",              FLASH_IN_PROGRESS},
 340      {"Image file size Error",          FAIL_FILE_SIZE},
 341      {"Input parameter error",          FAIL_PARAMETERS},
 342      {"Out of memory",                  FAIL_OUT_MEMORY},
 343      {"OK", 0}  /* Last entry err_code = 0. */
 344 };
 345
 346 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 347 {
 348         struct pm8001_ioctl_payload     *payload;
 349         DECLARE_COMPLETION_ONSTACK(completion);
 350         u8              *ioctlbuffer = NULL;
 351         u32             length = 0;
 352         u32             ret = 0;
 353
 354         length = 1024 * 5 + sizeof(*payload) - 1;
 355         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 356         if (!ioctlbuffer)
 357                 return -ENOMEM;
 358         if ((pm8001_ha->fw_image->size <= 0) ||
 359             (pm8001_ha->fw_image->size > 4096)) {
 360                 ret = FAIL_FILE_SIZE;
 361                 goto out;
 362         }
 363         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 364         memcpy((u8 *)payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 365                                 pm8001_ha->fw_image->size);
 366         payload->length = pm8001_ha->fw_image->size;
 367         payload->id = 0;
 368         pm8001_ha->nvmd_completion = &completion;
 369         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 370         wait_for_completion(&completion);
 371 out:
 372         kfree(ioctlbuffer);
 373         return ret;
 374 }
 375
 376 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 377 {
 378         struct pm8001_ioctl_payload     *payload;
 379         DECLARE_COMPLETION_ONSTACK(completion);
 380         u8              *ioctlbuffer = NULL;
 381         u32             length = 0;
 382         struct fw_control_info  *fwControl;
 383         u32             loopNumber, loopcount = 0;
 384         u32             sizeRead = 0;
 385         u32             partitionSize, partitionSizeTmp;
 386         u32             ret = 0;
 387         u32             partitionNumber = 0;
 388         struct pm8001_fw_image_header *image_hdr;
 389
 390         length = 1024 * 16 + sizeof(*payload) - 1;
 391         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 392         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 393         if (!ioctlbuffer)
 394                 return -ENOMEM;
 395         if (pm8001_ha->fw_image->size < 28) {
 396                 ret = FAIL_FILE_SIZE;
 397                 goto out;
 398         }
 399
 400         while (sizeRead < pm8001_ha->fw_image->size) {
 401                 partitionSizeTmp =
 402                         *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
 403                 partitionSize = be32_to_cpu(partitionSizeTmp);
 404                 loopcount = (partitionSize + HEADER_LEN)/IOCTL_BUF_SIZE;
 405                 if (loopcount % IOCTL_BUF_SIZE)
 406                         loopcount++;
 407                 if (loopcount == 0)
 408                         loopcount++;
 409                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 410                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 411                         payload->length = 1024*16;
 412                         payload->id = 0;
 413                         fwControl =
 414                               (struct fw_control_info *)payload->func_specific;
 415                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 416                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 417                         fwControl->retcode = 0;/* OUT */
 418                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 419
 420                 /* for the last chunk of data in case file size is not even with
 421                 4k, load only the rest*/
 422                 if (((loopcount-loopNumber) == 1) &&
 423                         ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
 424                         fwControl->len =
 425                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 426                         memcpy((u8 *)fwControl->buffer,
 427                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 428                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
 429                         sizeRead +=
 430                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 431                 } else {
 432                         memcpy((u8 *)fwControl->buffer,
 433                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 434                                 IOCTL_BUF_SIZE);
 435                         sizeRead += IOCTL_BUF_SIZE;
 436                 }
 437
 438                 pm8001_ha->nvmd_completion = &completion;
 439                 ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 440                 wait_for_completion(&completion);
 441                 if (ret || (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS)) {
 442                         ret = fwControl->retcode;
 443                         kfree(ioctlbuffer);
 444                         ioctlbuffer = NULL;
 445                         break;
 446                 }
 447         }
 448         if (ret)
 449                 break;
 450         partitionNumber++;
 451 }
 452 out:
 453         kfree(ioctlbuffer);
 454         return ret;
 455 }
 456 static ssize_t pm8001_store_update_fw(struct device *cdev,
 457                                       struct device_attribute *attr,
 458                                       const char *buf, size_t count)
 459 {
 460         struct Scsi_Host *shost = class_to_shost(cdev);
 461         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 462         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 463         char *cmd_ptr, *filename_ptr;
 464         int res, i;
 465         int flash_command = FLASH_CMD_NONE;
 466         int err = 0;
 467         if (!capable(CAP_SYS_ADMIN))
 468                 return -EACCES;
 469
 470         cmd_ptr = kzalloc(count*2, GFP_KERNEL);
 471
 472         if (!cmd_ptr) {
 473                 err = FAIL_OUT_MEMORY;
 474                 goto out;
 475         }
 476
 477         filename_ptr = cmd_ptr + count;
 478         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 479         if (res != 2) {
 480                 err = FAIL_PARAMETERS;
 481                 goto out1;
 482         }
 483
 484         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 485                 if (!memcmp(flash_command_table[i].command,
 486                                  cmd_ptr, strlen(cmd_ptr))) {
 487                         flash_command = flash_command_table[i].code;
 488                         break;
 489                 }
 490         }
 491         if (flash_command == FLASH_CMD_NONE) {
 492                 err = FAIL_PARAMETERS;
 493                 goto out1;
 494         }
 495
 496         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS) {
 497                 err = FLASH_IN_PROGRESS;
 498                 goto out1;
 499         }
 500         err = request_firmware(&pm8001_ha->fw_image,
 501                                filename_ptr,
 502                                pm8001_ha->dev);
 503
 504         if (err) {
 505                 PM8001_FAIL_DBG(pm8001_ha,
 506                         pm8001_printk("Failed to load firmware image file %s,"
 507                         " error %d\n", filename_ptr, err));
 508                 err = FAIL_OPEN_BIOS_FILE;
 509                 goto out1;
 510         }
 511
 512         switch (flash_command) {
 513         case FLASH_CMD_UPDATE:
 514                 pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 515                 err = pm8001_update_flash(pm8001_ha);
 516                 break;
 517         case FLASH_CMD_SET_NVMD:
 518                 pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 519                 err = pm8001_set_nvmd(pm8001_ha);
 520                 break;
 521         default:
 522                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 523                 err = FAIL_PARAMETERS;
 524                 break;
 525         }
 526         release_firmware(pm8001_ha->fw_image);
 527 out1:
 528         kfree(cmd_ptr);
 529 out:
 530         pm8001_ha->fw_status = err;
 531
 532         if (!err)
 533                 return count;
 534         else
 535                 return -err;
 536 }
 537
 538 static ssize_t pm8001_show_update_fw(struct device *cdev,
 539                                      struct device_attribute *attr, char *buf)
 540 {
 541         int i;
 542         struct Scsi_Host *shost = class_to_shost(cdev);
 543         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 544         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 545
 546         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 547                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 548                         break;
 549         }
 550         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 551                 pm8001_ha->fw_status = FLASH_OK;
 552
 553         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 554                         flash_error_table[i].err_code,
 555                         flash_error_table[i].reason);
 556 }
 557
 558 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUGO,
 559         pm8001_show_update_fw, pm8001_store_update_fw);
 560 struct device_attribute *pm8001_host_attrs[] = {
 561         &dev_attr_interface_rev,
 562         &dev_attr_fw_version,
 563         &dev_attr_update_fw,
 564         &dev_attr_aap_log,
 565         &dev_attr_iop_log,
 566         &dev_attr_max_out_io,
 567         &dev_attr_max_devices,
 568         &dev_attr_max_sg_list,
 569         &dev_attr_sas_spec_support,
 570         &dev_attr_logging_level,
 571         &dev_attr_host_sas_address,
 572         NULL,
 573 };
 574