drivers/scsi/pm8001/pm8001_ctl.c

   1 /*
   2  * PMC-Sierra 8001/8081/8088/8089 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  * @attr: device attribute (unused)
  51  * @buf: the buffer returned
  52  *
  53  * A sysfs 'read-only' shost attribute.
  54  */
  55 static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
  56         struct device_attribute *attr, char *buf)
  57 {
  58         struct Scsi_Host *shost = class_to_shost(cdev);
  59         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  60         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  61
  62         if (pm8001_ha->chip_id == chip_8001) {
  63                 return snprintf(buf, PAGE_SIZE, "%d\n",
  64                         pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
  65         } else {
  66                 return snprintf(buf, PAGE_SIZE, "%d\n",
  67                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
  68         }
  69 }
  70 static
  71 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
  72
  73 /**
  74  * controller_fatal_error_show - check controller is under fatal err
  75  * @cdev: pointer to embedded class device
  76  * @attr: device attribute (unused)
  77  * @buf: the buffer returned
  78  *
  79  * A sysfs 'read only' shost attribute.
  80  */
  81 static ssize_t controller_fatal_error_show(struct device *cdev,
  82                 struct device_attribute *attr, char *buf)
  83 {
  84         struct Scsi_Host *shost = class_to_shost(cdev);
  85         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  86         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  87
  88         return snprintf(buf, PAGE_SIZE, "%d\n",
  89                         pm8001_ha->controller_fatal_error);
  90 }
  91 static DEVICE_ATTR_RO(controller_fatal_error);
  92
  93 /**
  94  * pm8001_ctl_fw_version_show - firmware version
  95  * @cdev: pointer to embedded class device
  96  * @attr: device attribute (unused)
  97  * @buf: the buffer returned
  98  *
  99  * A sysfs 'read-only' shost attribute.
 100  */
 101 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
 102         struct device_attribute *attr, char *buf)
 103 {
 104         struct Scsi_Host *shost = class_to_shost(cdev);
 105         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 106         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 107
 108         if (pm8001_ha->chip_id == chip_8001) {
 109                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 110                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
 111                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
 112                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
 113                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
 114         } else {
 115                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 116                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
 117                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
 118                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
 119                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
 120         }
 121 }
 122 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
 123
 124 /**
 125  * pm8001_ctl_ila_version_show - ila version
 126  * @cdev: pointer to embedded class device
 127  * @attr: device attribute (unused)
 128  * @buf: the buffer returned
 129  *
 130  * A sysfs 'read-only' shost attribute.
 131  */
 132 static ssize_t pm8001_ctl_ila_version_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         if (pm8001_ha->chip_id != chip_8001) {
 140                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 141                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 24),
 142                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 16),
 143                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 8),
 144                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version));
 145         }
 146         return 0;
 147 }
 148 static DEVICE_ATTR(ila_version, 0444, pm8001_ctl_ila_version_show, NULL);
 149
 150 /**
 151  * pm8001_ctl_inactive_fw_version_show - Inacative firmware version number
 152  * @cdev: pointer to embedded class device
 153  * @attr: device attribute (unused)
 154  * @buf: the buffer returned
 155  *
 156  * A sysfs 'read-only' shost attribute.
 157  */
 158 static ssize_t pm8001_ctl_inactive_fw_version_show(struct device *cdev,
 159         struct device_attribute *attr, char *buf)
 160 {
 161         struct Scsi_Host *shost = class_to_shost(cdev);
 162         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 163         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 164
 165         if (pm8001_ha->chip_id != chip_8001) {
 166                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 167                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 24),
 168                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 16),
 169                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 8),
 170                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version));
 171         }
 172         return 0;
 173 }
 174 static
 175 DEVICE_ATTR(inc_fw_ver, 0444, pm8001_ctl_inactive_fw_version_show, NULL);
 176
 177 /**
 178  * pm8001_ctl_max_out_io_show - max outstanding io supported
 179  * @cdev: pointer to embedded class device
 180  * @attr: device attribute (unused)
 181  * @buf: the buffer returned
 182  *
 183  * A sysfs 'read-only' shost attribute.
 184  */
 185 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
 186         struct device_attribute *attr, char *buf)
 187 {
 188         struct Scsi_Host *shost = class_to_shost(cdev);
 189         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 190         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 191
 192         if (pm8001_ha->chip_id == chip_8001) {
 193                 return snprintf(buf, PAGE_SIZE, "%d\n",
 194                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
 195         } else {
 196                 return snprintf(buf, PAGE_SIZE, "%d\n",
 197                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
 198         }
 199 }
 200 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
 201 /**
 202  * pm8001_ctl_max_devices_show - max devices support
 203  * @cdev: pointer to embedded class device
 204  * @attr: device attribute (unused)
 205  * @buf: the buffer returned
 206  *
 207  * A sysfs 'read-only' shost attribute.
 208  */
 209 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
 210         struct device_attribute *attr, char *buf)
 211 {
 212         struct Scsi_Host *shost = class_to_shost(cdev);
 213         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 214         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 215
 216         if (pm8001_ha->chip_id == chip_8001) {
 217                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 218                         (u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
 219                         );
 220         } else {
 221                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 222                         (u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
 223                         );
 224         }
 225 }
 226 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
 227 /**
 228  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
 229  * hardware limitation
 230  * @cdev: pointer to embedded class device
 231  * @attr: device attribute (unused)
 232  * @buf: the buffer returned
 233  *
 234  * A sysfs 'read-only' shost attribute.
 235  */
 236 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
 237         struct device_attribute *attr, char *buf)
 238 {
 239         struct Scsi_Host *shost = class_to_shost(cdev);
 240         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 241         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 242
 243         if (pm8001_ha->chip_id == chip_8001) {
 244                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 245                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
 246                         );
 247         } else {
 248                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 249                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
 250                         );
 251         }
 252 }
 253 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
 254
 255 #define SAS_1_0 0x1
 256 #define SAS_1_1 0x2
 257 #define SAS_2_0 0x4
 258
 259 static ssize_t
 260 show_sas_spec_support_status(unsigned int mode, char *buf)
 261 {
 262         ssize_t len = 0;
 263
 264         if (mode & SAS_1_1)
 265                 len = sprintf(buf, "%s", "SAS1.1");
 266         if (mode & SAS_2_0)
 267                 len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
 268         len += sprintf(buf + len, "\n");
 269
 270         return len;
 271 }
 272
 273 /**
 274  * pm8001_ctl_sas_spec_support_show - sas spec supported
 275  * @cdev: pointer to embedded class device
 276  * @attr: device attribute (unused)
 277  * @buf: the buffer returned
 278  *
 279  * A sysfs 'read-only' shost attribute.
 280  */
 281 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
 282         struct device_attribute *attr, char *buf)
 283 {
 284         unsigned int mode;
 285         struct Scsi_Host *shost = class_to_shost(cdev);
 286         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 287         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 288         /* fe000000 means supports SAS2.1 */
 289         if (pm8001_ha->chip_id == chip_8001)
 290                 mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
 291                                                         0xfe000000)>>25;
 292         else
 293                 /* fe000000 means supports SAS2.1 */
 294                 mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
 295                                                         0xfe000000)>>25;
 296         return show_sas_spec_support_status(mode, buf);
 297 }
 298 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
 299                    pm8001_ctl_sas_spec_support_show, NULL);
 300
 301 /**
 302  * pm8001_ctl_sas_address_show - sas address
 303  * @cdev: pointer to embedded class device
 304  * @attr: device attribute (unused)
 305  * @buf: the buffer returned
 306  *
 307  * This is the controller sas address
 308  *
 309  * A sysfs 'read-only' shost attribute.
 310  */
 311 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
 312         struct device_attribute *attr, char *buf)
 313 {
 314         struct Scsi_Host *shost = class_to_shost(cdev);
 315         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 316         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 317         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
 318                         be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
 319 }
 320 static DEVICE_ATTR(host_sas_address, S_IRUGO,
 321                    pm8001_ctl_host_sas_address_show, NULL);
 322
 323 /**
 324  * pm8001_ctl_logging_level_show - logging level
 325  * @cdev: pointer to embedded class device
 326  * @attr: device attribute (unused)
 327  * @buf: the buffer returned
 328  *
 329  * A sysfs 'read/write' shost attribute.
 330  */
 331 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
 332         struct device_attribute *attr, char *buf)
 333 {
 334         struct Scsi_Host *shost = class_to_shost(cdev);
 335         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 336         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 337
 338         return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
 339 }
 340
 341 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
 342         struct device_attribute *attr, const char *buf, size_t count)
 343 {
 344         struct Scsi_Host *shost = class_to_shost(cdev);
 345         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 346         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 347         int val = 0;
 348
 349         if (sscanf(buf, "%x", &val) != 1)
 350                 return -EINVAL;
 351
 352         pm8001_ha->logging_level = val;
 353         return strlen(buf);
 354 }
 355
 356 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
 357         pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
 358 /**
 359  * pm8001_ctl_aap_log_show - aap1 event log
 360  * @cdev: pointer to embedded class device
 361  * @attr: device attribute (unused)
 362  * @buf: the buffer returned
 363  *
 364  * A sysfs 'read-only' shost attribute.
 365  */
 366 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
 367         struct device_attribute *attr, char *buf)
 368 {
 369         struct Scsi_Host *shost = class_to_shost(cdev);
 370         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 371         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 372         int i;
 373 #define AAP1_MEMMAP(r, c) \
 374         (*(u32 *)((u8*)pm8001_ha->memoryMap.region[AAP1].virt_ptr + (r) * 32 \
 375         + (c)))
 376
 377         char *str = buf;
 378         int max = 2;
 379         for (i = 0; i < max; i++) {
 380                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 381                                "0x%08x 0x%08x\n",
 382                                AAP1_MEMMAP(i, 0),
 383                                AAP1_MEMMAP(i, 4),
 384                                AAP1_MEMMAP(i, 8),
 385                                AAP1_MEMMAP(i, 12),
 386                                AAP1_MEMMAP(i, 16),
 387                                AAP1_MEMMAP(i, 20),
 388                                AAP1_MEMMAP(i, 24),
 389                                AAP1_MEMMAP(i, 28));
 390         }
 391
 392         return str - buf;
 393 }
 394 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
 395 /**
 396  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
 397  * @cdev:pointer to embedded class device
 398  * @attr: device attribute (unused)
 399  * @buf: the buffer returned
 400  * A sysfs 'read-only' shost attribute.
 401  */
 402 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
 403         struct device_attribute *attr, char *buf)
 404 {
 405         struct Scsi_Host *shost = class_to_shost(cdev);
 406         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 407         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 408         int offset;
 409         char *str = buf;
 410         int start = 0;
 411         u32 ib_offset = pm8001_ha->ib_offset;
 412 #define IB_MEMMAP(c)    \
 413                 (*(u32 *)((u8 *)pm8001_ha->     \
 414                 memoryMap.region[ib_offset].virt_ptr +  \
 415                 pm8001_ha->evtlog_ib_offset + (c)))
 416
 417         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 418                 str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
 419                 start = start + 4;
 420         }
 421         pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
 422         if (((pm8001_ha->evtlog_ib_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 423                 pm8001_ha->evtlog_ib_offset = 0;
 424
 425         return str - buf;
 426 }
 427
 428 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
 429 /**
 430  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
 431  * @cdev:pointer to embedded class device
 432  * @attr: device attribute (unused)
 433  * @buf: the buffer returned
 434  * A sysfs 'read-only' shost attribute.
 435  */
 436
 437 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
 438         struct device_attribute *attr, char *buf)
 439 {
 440         struct Scsi_Host *shost = class_to_shost(cdev);
 441         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 442         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 443         int offset;
 444         char *str = buf;
 445         int start = 0;
 446         u32 ob_offset = pm8001_ha->ob_offset;
 447 #define OB_MEMMAP(c)    \
 448                 (*(u32 *)((u8 *)pm8001_ha->     \
 449                 memoryMap.region[ob_offset].virt_ptr +  \
 450                 pm8001_ha->evtlog_ob_offset + (c)))
 451
 452         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 453                 str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
 454                 start = start + 4;
 455         }
 456         pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
 457         if (((pm8001_ha->evtlog_ob_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 458                 pm8001_ha->evtlog_ob_offset = 0;
 459
 460         return str - buf;
 461 }
 462 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
 463 /**
 464  * pm8001_ctl_bios_version_show - Bios version Display
 465  * @cdev:pointer to embedded class device
 466  * @attr: device attribute (unused)
 467  * @buf:the buffer returned
 468  * A sysfs 'read-only' shost attribute.
 469  */
 470 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
 471         struct device_attribute *attr, char *buf)
 472 {
 473         struct Scsi_Host *shost = class_to_shost(cdev);
 474         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 475         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 476         char *str = buf;
 477         int bios_index;
 478         DECLARE_COMPLETION_ONSTACK(completion);
 479         struct pm8001_ioctl_payload payload;
 480
 481         pm8001_ha->nvmd_completion = &completion;
 482         payload.minor_function = 7;
 483         payload.offset = 0;
 484         payload.rd_length = 4096;
 485         payload.func_specific = kzalloc(4096, GFP_KERNEL);
 486         if (!payload.func_specific)
 487                 return -ENOMEM;
 488         if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
 489                 kfree(payload.func_specific);
 490                 return -ENOMEM;
 491         }
 492         wait_for_completion(&completion);
 493         for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
 494                 bios_index++)
 495                 str += sprintf(str, "%c",
 496                         *(payload.func_specific+bios_index));
 497         kfree(payload.func_specific);
 498         return str - buf;
 499 }
 500 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
 501 /**
 502  * event_log_size_show - event log size
 503  * @cdev: pointer to embedded class device
 504  * @attr: device attribute (unused)
 505  * @buf: the buffer returned
 506  *
 507  * A sysfs read  shost attribute.
 508  */
 509 static ssize_t event_log_size_show(struct device *cdev,
 510         struct device_attribute *attr, char *buf)
 511 {
 512         struct Scsi_Host *shost = class_to_shost(cdev);
 513         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 514         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 515
 516         return snprintf(buf, PAGE_SIZE, "%d\n",
 517                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size);
 518 }
 519 static DEVICE_ATTR_RO(event_log_size);
 520 /**
 521  * pm8001_ctl_aap_log_show - IOP event log
 522  * @cdev: pointer to embedded class device
 523  * @attr: device attribute (unused)
 524  * @buf: the buffer returned
 525  *
 526  * A sysfs 'read-only' shost attribute.
 527  */
 528 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 529         struct device_attribute *attr, char *buf)
 530 {
 531         struct Scsi_Host *shost = class_to_shost(cdev);
 532         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 533         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 534         char *str = buf;
 535         u32 read_size =
 536                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
 537         static u32 start, end, count;
 538         u32 max_read_times = 32;
 539         u32 max_count = (read_size * 1024) / (max_read_times * 4);
 540         u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
 541
 542         if ((count % max_count) == 0) {
 543                 start = 0;
 544                 end = max_read_times;
 545                 count = 0;
 546         } else {
 547                 start = end;
 548                 end = end + max_read_times;
 549         }
 550
 551         for (; start < end; start++)
 552                 str += sprintf(str, "%08x ", *(temp+start));
 553         count++;
 554         return str - buf;
 555 }
 556 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 557
 558 /**
 559  ** pm8001_ctl_fatal_log_show - fatal error logging
 560  ** @cdev:pointer to embedded class device
 561  ** @attr: device attribute
 562  ** @buf: the buffer returned
 563  **
 564  ** A sysfs 'read-only' shost attribute.
 565  **/
 566
 567 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
 568         struct device_attribute *attr, char *buf)
 569 {
 570         ssize_t count;
 571
 572         count = pm80xx_get_fatal_dump(cdev, attr, buf);
 573         return count;
 574 }
 575
 576 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
 577
 578 /**
 579  ** non_fatal_log_show - non fatal error logging
 580  ** @cdev:pointer to embedded class device
 581  ** @attr: device attribute
 582  ** @buf: the buffer returned
 583  **
 584  ** A sysfs 'read-only' shost attribute.
 585  **/
 586 static ssize_t non_fatal_log_show(struct device *cdev,
 587         struct device_attribute *attr, char *buf)
 588 {
 589         u32 count;
 590
 591         count = pm80xx_get_non_fatal_dump(cdev, attr, buf);
 592         return count;
 593 }
 594 static DEVICE_ATTR_RO(non_fatal_log);
 595
 596 static ssize_t non_fatal_count_show(struct device *cdev,
 597                 struct device_attribute *attr, char *buf)
 598 {
 599         struct Scsi_Host *shost = class_to_shost(cdev);
 600         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 601         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 602
 603         return snprintf(buf, PAGE_SIZE, "%08x",
 604                         pm8001_ha->non_fatal_count);
 605 }
 606
 607 static ssize_t non_fatal_count_store(struct device *cdev,
 608                 struct device_attribute *attr, const char *buf, size_t count)
 609 {
 610         struct Scsi_Host *shost = class_to_shost(cdev);
 611         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 612         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 613         int val = 0;
 614
 615         if (kstrtoint(buf, 16, &val) != 0)
 616                 return -EINVAL;
 617
 618         pm8001_ha->non_fatal_count = val;
 619         return strlen(buf);
 620 }
 621 static DEVICE_ATTR_RW(non_fatal_count);
 622
 623 /**
 624  ** pm8001_ctl_gsm_log_show - gsm dump collection
 625  ** @cdev:pointer to embedded class device
 626  ** @attr: device attribute (unused)
 627  ** @buf: the buffer returned
 628  ** A sysfs 'read-only' shost attribute.
 629  **/
 630 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
 631         struct device_attribute *attr, char *buf)
 632 {
 633         ssize_t count;
 634
 635         count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
 636         return count;
 637 }
 638
 639 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 640
 641 #define FLASH_CMD_NONE      0x00
 642 #define FLASH_CMD_UPDATE    0x01
 643 #define FLASH_CMD_SET_NVMD    0x02
 644
 645 struct flash_command {
 646      u8      command[8];
 647      int     code;
 648 };
 649
 650 static struct flash_command flash_command_table[] =
 651 {
 652      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 653      {"update",      FLASH_CMD_UPDATE},
 654      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 655 };
 656
 657 struct error_fw {
 658      char    *reason;
 659      int     err_code;
 660 };
 661
 662 static struct error_fw flash_error_table[] =
 663 {
 664      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 665      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 666      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 667      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 668      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 669      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 670      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 671      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 672      {"Flash in progress",              FLASH_IN_PROGRESS},
 673      {"Image file size Error",          FAIL_FILE_SIZE},
 674      {"Input parameter error",          FAIL_PARAMETERS},
 675      {"Out of memory",                  FAIL_OUT_MEMORY},
 676      {"OK", 0}  /* Last entry err_code = 0. */
 677 };
 678
 679 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 680 {
 681         struct pm8001_ioctl_payload     *payload;
 682         DECLARE_COMPLETION_ONSTACK(completion);
 683         u8              *ioctlbuffer;
 684         u32             ret;
 685         u32             length = 1024 * 5 + sizeof(*payload) - 1;
 686
 687         if (pm8001_ha->fw_image->size > 4096) {
 688                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 689                 return -EFAULT;
 690         }
 691
 692         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 693         if (!ioctlbuffer) {
 694                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 695                 return -ENOMEM;
 696         }
 697         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 698         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 699                                 pm8001_ha->fw_image->size);
 700         payload->wr_length = pm8001_ha->fw_image->size;
 701         payload->id = 0;
 702         payload->minor_function = 0x1;
 703         pm8001_ha->nvmd_completion = &completion;
 704         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 705         if (ret) {
 706                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 707                 goto out;
 708         }
 709         wait_for_completion(&completion);
 710 out:
 711         kfree(ioctlbuffer);
 712         return ret;
 713 }
 714
 715 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 716 {
 717         struct pm8001_ioctl_payload     *payload;
 718         DECLARE_COMPLETION_ONSTACK(completion);
 719         u8              *ioctlbuffer;
 720         struct fw_control_info  *fwControl;
 721         u32             partitionSize, partitionSizeTmp;
 722         u32             loopNumber, loopcount;
 723         struct pm8001_fw_image_header *image_hdr;
 724         u32             sizeRead = 0;
 725         u32             ret = 0;
 726         u32             length = 1024 * 16 + sizeof(*payload) - 1;
 727
 728         if (pm8001_ha->fw_image->size < 28) {
 729                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 730                 return -EFAULT;
 731         }
 732         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 733         if (!ioctlbuffer) {
 734                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 735                 return -ENOMEM;
 736         }
 737         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 738         while (sizeRead < pm8001_ha->fw_image->size) {
 739                 partitionSizeTmp =
 740                         *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
 741                 partitionSize = be32_to_cpu(partitionSizeTmp);
 742                 loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
 743                                         IOCTL_BUF_SIZE);
 744                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 745                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 746                         payload->wr_length = 1024*16;
 747                         payload->id = 0;
 748                         fwControl =
 749                               (struct fw_control_info *)&payload->func_specific;
 750                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 751                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 752                         fwControl->retcode = 0;/* OUT */
 753                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 754
 755                 /* for the last chunk of data in case file size is not even with
 756                 4k, load only the rest*/
 757                 if (((loopcount-loopNumber) == 1) &&
 758                         ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
 759                         fwControl->len =
 760                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 761                         memcpy((u8 *)fwControl->buffer,
 762                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 763                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
 764                         sizeRead +=
 765                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 766                 } else {
 767                         memcpy((u8 *)fwControl->buffer,
 768                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 769                                 IOCTL_BUF_SIZE);
 770                         sizeRead += IOCTL_BUF_SIZE;
 771                 }
 772
 773                 pm8001_ha->nvmd_completion = &completion;
 774                 ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 775                 if (ret) {
 776                         pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 777                         goto out;
 778                 }
 779                 wait_for_completion(&completion);
 780                 if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
 781                         pm8001_ha->fw_status = fwControl->retcode;
 782                         ret = -EFAULT;
 783                         goto out;
 784                 }
 785                 }
 786         }
 787 out:
 788         kfree(ioctlbuffer);
 789         return ret;
 790 }
 791 static ssize_t pm8001_store_update_fw(struct device *cdev,
 792                                       struct device_attribute *attr,
 793                                       const char *buf, size_t count)
 794 {
 795         struct Scsi_Host *shost = class_to_shost(cdev);
 796         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 797         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 798         char *cmd_ptr, *filename_ptr;
 799         int res, i;
 800         int flash_command = FLASH_CMD_NONE;
 801         int ret;
 802
 803         if (!capable(CAP_SYS_ADMIN))
 804                 return -EACCES;
 805
 806         /* this test protects us from running two flash processes at once,
 807          * so we should start with this test */
 808         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
 809                 return -EINPROGRESS;
 810         pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 811
 812         cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
 813         if (!cmd_ptr) {
 814                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 815                 return -ENOMEM;
 816         }
 817
 818         filename_ptr = cmd_ptr + count;
 819         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 820         if (res != 2) {
 821                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 822                 ret = -EINVAL;
 823                 goto out;
 824         }
 825
 826         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 827                 if (!memcmp(flash_command_table[i].command,
 828                                  cmd_ptr, strlen(cmd_ptr))) {
 829                         flash_command = flash_command_table[i].code;
 830                         break;
 831                 }
 832         }
 833         if (flash_command == FLASH_CMD_NONE) {
 834                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 835                 ret = -EINVAL;
 836                 goto out;
 837         }
 838
 839         ret = request_firmware(&pm8001_ha->fw_image,
 840                                filename_ptr,
 841                                pm8001_ha->dev);
 842
 843         if (ret) {
 844                 pm8001_dbg(pm8001_ha, FAIL,
 845                            "Failed to load firmware image file %s, error %d\n",
 846                            filename_ptr, ret);
 847                 pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
 848                 goto out;
 849         }
 850
 851         if (FLASH_CMD_UPDATE == flash_command)
 852                 ret = pm8001_update_flash(pm8001_ha);
 853         else
 854                 ret = pm8001_set_nvmd(pm8001_ha);
 855
 856         release_firmware(pm8001_ha->fw_image);
 857 out:
 858         kfree(cmd_ptr);
 859
 860         if (ret)
 861                 return ret;
 862
 863         pm8001_ha->fw_status = FLASH_OK;
 864         return count;
 865 }
 866
 867 static ssize_t pm8001_show_update_fw(struct device *cdev,
 868                                      struct device_attribute *attr, char *buf)
 869 {
 870         int i;
 871         struct Scsi_Host *shost = class_to_shost(cdev);
 872         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 873         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 874
 875         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 876                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 877                         break;
 878         }
 879         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 880                 pm8001_ha->fw_status = FLASH_OK;
 881
 882         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 883                         flash_error_table[i].err_code,
 884                         flash_error_table[i].reason);
 885 }
 886
 887 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 888         pm8001_show_update_fw, pm8001_store_update_fw);
 889 struct device_attribute *pm8001_host_attrs[] = {
 890         &dev_attr_interface_rev,
 891         &dev_attr_controller_fatal_error,
 892         &dev_attr_fw_version,
 893         &dev_attr_update_fw,
 894         &dev_attr_aap_log,
 895         &dev_attr_iop_log,
 896         &dev_attr_fatal_log,
 897         &dev_attr_non_fatal_log,
 898         &dev_attr_non_fatal_count,
 899         &dev_attr_gsm_log,
 900         &dev_attr_max_out_io,
 901         &dev_attr_max_devices,
 902         &dev_attr_max_sg_list,
 903         &dev_attr_sas_spec_support,
 904         &dev_attr_logging_level,
 905         &dev_attr_event_log_size,
 906         &dev_attr_host_sas_address,
 907         &dev_attr_bios_version,
 908         &dev_attr_ib_log,
 909         &dev_attr_ob_log,
 910         &dev_attr_ila_version,
 911         &dev_attr_inc_fw_ver,
 912         NULL,
 913 };
 914