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  * @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         if (pm8001_ha->chip_id == chip_8001) {
  62                 return snprintf(buf, PAGE_SIZE, "%d\n",
  63                         pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
  64         } else {
  65                 return snprintf(buf, PAGE_SIZE, "%d\n",
  66                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
  67         }
  68 }
  69 static
  70 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
  71
  72 /**
  73  * controller_fatal_error_show - check controller is under fatal err
  74  * @cdev: pointer to embedded class device
  75  * @buf: the buffer returned
  76  *
  77  * A sysfs 'read only' shost attribute.
  78  */
  79 static ssize_t controller_fatal_error_show(struct device *cdev,
  80                 struct device_attribute *attr, char *buf)
  81 {
  82         struct Scsi_Host *shost = class_to_shost(cdev);
  83         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  84         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  85
  86         return snprintf(buf, PAGE_SIZE, "%d\n",
  87                         pm8001_ha->controller_fatal_error);
  88 }
  89 static DEVICE_ATTR_RO(controller_fatal_error);
  90
  91 /**
  92  * pm8001_ctl_fw_version_show - firmware version
  93  * @cdev: pointer to embedded class device
  94  * @buf: the buffer returned
  95  *
  96  * A sysfs 'read-only' shost attribute.
  97  */
  98 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
  99         struct device_attribute *attr, char *buf)
 100 {
 101         struct Scsi_Host *shost = class_to_shost(cdev);
 102         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 103         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 104
 105         if (pm8001_ha->chip_id == chip_8001) {
 106                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 107                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
 108                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
 109                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
 110                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
 111         } else {
 112                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 113                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
 114                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
 115                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
 116                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
 117         }
 118 }
 119 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
 120
 121 /**
 122  * pm8001_ctl_ila_version_show - ila version
 123  * @cdev: pointer to embedded class device
 124  * @buf: the buffer returned
 125  *
 126  * A sysfs 'read-only' shost attribute.
 127  */
 128 static ssize_t pm8001_ctl_ila_version_show(struct device *cdev,
 129         struct device_attribute *attr, char *buf)
 130 {
 131         struct Scsi_Host *shost = class_to_shost(cdev);
 132         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 133         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 134
 135         if (pm8001_ha->chip_id != chip_8001) {
 136                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 137                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 24),
 138                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 16),
 139                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 8),
 140                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version));
 141         }
 142         return 0;
 143 }
 144 static DEVICE_ATTR(ila_version, 0444, pm8001_ctl_ila_version_show, NULL);
 145
 146 /**
 147  * pm8001_ctl_inactive_fw_version_show - Inacative firmware version number
 148  * @cdev: pointer to embedded class device
 149  * @buf: the buffer returned
 150  *
 151  * A sysfs 'read-only' shost attribute.
 152  */
 153 static ssize_t pm8001_ctl_inactive_fw_version_show(struct device *cdev,
 154         struct device_attribute *attr, char *buf)
 155 {
 156         struct Scsi_Host *shost = class_to_shost(cdev);
 157         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 158         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 159
 160         if (pm8001_ha->chip_id != chip_8001) {
 161                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 162                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 24),
 163                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 16),
 164                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 8),
 165                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version));
 166         }
 167         return 0;
 168 }
 169 static
 170 DEVICE_ATTR(inc_fw_ver, 0444, pm8001_ctl_inactive_fw_version_show, NULL);
 171
 172 /**
 173  * pm8001_ctl_max_out_io_show - max outstanding io supported
 174  * @cdev: pointer to embedded class device
 175  * @buf: the buffer returned
 176  *
 177  * A sysfs 'read-only' shost attribute.
 178  */
 179 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
 180         struct device_attribute *attr, char *buf)
 181 {
 182         struct Scsi_Host *shost = class_to_shost(cdev);
 183         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 184         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 185
 186         if (pm8001_ha->chip_id == chip_8001) {
 187                 return snprintf(buf, PAGE_SIZE, "%d\n",
 188                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
 189         } else {
 190                 return snprintf(buf, PAGE_SIZE, "%d\n",
 191                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
 192         }
 193 }
 194 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
 195 /**
 196  * pm8001_ctl_max_devices_show - max devices support
 197  * @cdev: pointer to embedded class device
 198  * @buf: the buffer returned
 199  *
 200  * A sysfs 'read-only' shost attribute.
 201  */
 202 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
 203         struct device_attribute *attr, char *buf)
 204 {
 205         struct Scsi_Host *shost = class_to_shost(cdev);
 206         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 207         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 208
 209         if (pm8001_ha->chip_id == chip_8001) {
 210                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 211                         (u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
 212                         );
 213         } else {
 214                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 215                         (u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
 216                         );
 217         }
 218 }
 219 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
 220 /**
 221  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
 222  * hardware limitation
 223  * @cdev: pointer to embedded class device
 224  * @buf: the buffer returned
 225  *
 226  * A sysfs 'read-only' shost attribute.
 227  */
 228 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
 229         struct device_attribute *attr, char *buf)
 230 {
 231         struct Scsi_Host *shost = class_to_shost(cdev);
 232         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 233         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 234
 235         if (pm8001_ha->chip_id == chip_8001) {
 236                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 237                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
 238                         );
 239         } else {
 240                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 241                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
 242                         );
 243         }
 244 }
 245 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
 246
 247 #define SAS_1_0 0x1
 248 #define SAS_1_1 0x2
 249 #define SAS_2_0 0x4
 250
 251 static ssize_t
 252 show_sas_spec_support_status(unsigned int mode, char *buf)
 253 {
 254         ssize_t len = 0;
 255
 256         if (mode & SAS_1_1)
 257                 len = sprintf(buf, "%s", "SAS1.1");
 258         if (mode & SAS_2_0)
 259                 len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
 260         len += sprintf(buf + len, "\n");
 261
 262         return len;
 263 }
 264
 265 /**
 266  * pm8001_ctl_sas_spec_support_show - sas spec supported
 267  * @cdev: pointer to embedded class device
 268  * @buf: the buffer returned
 269  *
 270  * A sysfs 'read-only' shost attribute.
 271  */
 272 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
 273         struct device_attribute *attr, char *buf)
 274 {
 275         unsigned int mode;
 276         struct Scsi_Host *shost = class_to_shost(cdev);
 277         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 278         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 279         /* fe000000 means supports SAS2.1 */
 280         if (pm8001_ha->chip_id == chip_8001)
 281                 mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
 282                                                         0xfe000000)>>25;
 283         else
 284                 /* fe000000 means supports SAS2.1 */
 285                 mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
 286                                                         0xfe000000)>>25;
 287         return show_sas_spec_support_status(mode, buf);
 288 }
 289 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
 290                    pm8001_ctl_sas_spec_support_show, NULL);
 291
 292 /**
 293  * pm8001_ctl_sas_address_show - sas address
 294  * @cdev: pointer to embedded class device
 295  * @buf: the buffer returned
 296  *
 297  * This is the controller sas address
 298  *
 299  * A sysfs 'read-only' shost attribute.
 300  */
 301 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
 302         struct device_attribute *attr, char *buf)
 303 {
 304         struct Scsi_Host *shost = class_to_shost(cdev);
 305         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 306         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 307         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
 308                         be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
 309 }
 310 static DEVICE_ATTR(host_sas_address, S_IRUGO,
 311                    pm8001_ctl_host_sas_address_show, NULL);
 312
 313 /**
 314  * pm8001_ctl_logging_level_show - logging level
 315  * @cdev: pointer to embedded class device
 316  * @buf: the buffer returned
 317  *
 318  * A sysfs 'read/write' shost attribute.
 319  */
 320 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
 321         struct device_attribute *attr, char *buf)
 322 {
 323         struct Scsi_Host *shost = class_to_shost(cdev);
 324         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 325         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 326
 327         return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
 328 }
 329 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
 330         struct device_attribute *attr, const char *buf, size_t count)
 331 {
 332         struct Scsi_Host *shost = class_to_shost(cdev);
 333         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 334         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 335         int val = 0;
 336
 337         if (sscanf(buf, "%x", &val) != 1)
 338                 return -EINVAL;
 339
 340         pm8001_ha->logging_level = val;
 341         return strlen(buf);
 342 }
 343
 344 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
 345         pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
 346 /**
 347  * pm8001_ctl_aap_log_show - aap1 event log
 348  * @cdev: pointer to embedded class device
 349  * @buf: the buffer returned
 350  *
 351  * A sysfs 'read-only' shost attribute.
 352  */
 353 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
 354         struct device_attribute *attr, char *buf)
 355 {
 356         struct Scsi_Host *shost = class_to_shost(cdev);
 357         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 358         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 359         int i;
 360 #define AAP1_MEMMAP(r, c) \
 361         (*(u32 *)((u8*)pm8001_ha->memoryMap.region[AAP1].virt_ptr + (r) * 32 \
 362         + (c)))
 363
 364         char *str = buf;
 365         int max = 2;
 366         for (i = 0; i < max; i++) {
 367                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 368                                "0x%08x 0x%08x\n",
 369                                AAP1_MEMMAP(i, 0),
 370                                AAP1_MEMMAP(i, 4),
 371                                AAP1_MEMMAP(i, 8),
 372                                AAP1_MEMMAP(i, 12),
 373                                AAP1_MEMMAP(i, 16),
 374                                AAP1_MEMMAP(i, 20),
 375                                AAP1_MEMMAP(i, 24),
 376                                AAP1_MEMMAP(i, 28));
 377         }
 378
 379         return str - buf;
 380 }
 381 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
 382 /**
 383  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
 384  * @cdev:pointer to embedded class device
 385  * @buf: the buffer returned
 386  * A sysfs 'read-only' shost attribute.
 387  */
 388 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
 389         struct device_attribute *attr, char *buf)
 390 {
 391         struct Scsi_Host *shost = class_to_shost(cdev);
 392         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 393         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 394         int offset;
 395         char *str = buf;
 396         int start = 0;
 397 #define IB_MEMMAP(c)    \
 398                 (*(u32 *)((u8 *)pm8001_ha->     \
 399                 memoryMap.region[IB].virt_ptr + \
 400                 pm8001_ha->evtlog_ib_offset + (c)))
 401
 402         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 403                 str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
 404                 start = start + 4;
 405         }
 406         pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
 407         if (((pm8001_ha->evtlog_ib_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 408                 pm8001_ha->evtlog_ib_offset = 0;
 409
 410         return str - buf;
 411 }
 412
 413 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
 414 /**
 415  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
 416  * @cdev:pointer to embedded class device
 417  * @buf: the buffer returned
 418  * A sysfs 'read-only' shost attribute.
 419  */
 420
 421 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
 422         struct device_attribute *attr, char *buf)
 423 {
 424         struct Scsi_Host *shost = class_to_shost(cdev);
 425         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 426         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 427         int offset;
 428         char *str = buf;
 429         int start = 0;
 430 #define OB_MEMMAP(c)    \
 431                 (*(u32 *)((u8 *)pm8001_ha->     \
 432                 memoryMap.region[OB].virt_ptr + \
 433                 pm8001_ha->evtlog_ob_offset + (c)))
 434
 435         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 436                 str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
 437                 start = start + 4;
 438         }
 439         pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
 440         if (((pm8001_ha->evtlog_ob_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 441                 pm8001_ha->evtlog_ob_offset = 0;
 442
 443         return str - buf;
 444 }
 445 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
 446 /**
 447  * pm8001_ctl_bios_version_show - Bios version Display
 448  * @cdev:pointer to embedded class device
 449  * @buf:the buffer returned
 450  * A sysfs 'read-only' shost attribute.
 451  */
 452 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
 453         struct device_attribute *attr, char *buf)
 454 {
 455         struct Scsi_Host *shost = class_to_shost(cdev);
 456         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 457         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 458         char *str = buf;
 459         int bios_index;
 460         DECLARE_COMPLETION_ONSTACK(completion);
 461         struct pm8001_ioctl_payload payload;
 462
 463         pm8001_ha->nvmd_completion = &completion;
 464         payload.minor_function = 7;
 465         payload.offset = 0;
 466         payload.length = 4096;
 467         payload.func_specific = kzalloc(4096, GFP_KERNEL);
 468         if (!payload.func_specific)
 469                 return -ENOMEM;
 470         if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
 471                 kfree(payload.func_specific);
 472                 return -ENOMEM;
 473         }
 474         wait_for_completion(&completion);
 475         for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
 476                 bios_index++)
 477                 str += sprintf(str, "%c",
 478                         *(payload.func_specific+bios_index));
 479         kfree(payload.func_specific);
 480         return str - buf;
 481 }
 482 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
 483 /**
 484  * event_log_size_show - event log size
 485  * @cdev: pointer to embedded class device
 486  * @buf: the buffer returned
 487  *
 488  * A sysfs read  shost attribute.
 489  */
 490 static ssize_t event_log_size_show(struct device *cdev,
 491         struct device_attribute *attr, char *buf)
 492 {
 493         struct Scsi_Host *shost = class_to_shost(cdev);
 494         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 495         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 496
 497         return snprintf(buf, PAGE_SIZE, "%d\n",
 498                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size);
 499 }
 500 static DEVICE_ATTR_RO(event_log_size);
 501 /**
 502  * pm8001_ctl_aap_log_show - IOP event log
 503  * @cdev: pointer to embedded class device
 504  * @buf: the buffer returned
 505  *
 506  * A sysfs 'read-only' shost attribute.
 507  */
 508 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 509         struct device_attribute *attr, char *buf)
 510 {
 511         struct Scsi_Host *shost = class_to_shost(cdev);
 512         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 513         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 514         char *str = buf;
 515         u32 read_size =
 516                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
 517         static u32 start, end, count;
 518         u32 max_read_times = 32;
 519         u32 max_count = (read_size * 1024) / (max_read_times * 4);
 520         u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
 521
 522         if ((count % max_count) == 0) {
 523                 start = 0;
 524                 end = max_read_times;
 525                 count = 0;
 526         } else {
 527                 start = end;
 528                 end = end + max_read_times;
 529         }
 530
 531         for (; start < end; start++)
 532                 str += sprintf(str, "%08x ", *(temp+start));
 533         count++;
 534         return str - buf;
 535 }
 536 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 537
 538 /**
 539  ** pm8001_ctl_fatal_log_show - fatal error logging
 540  ** @cdev:pointer to embedded class device
 541  ** @buf: the buffer returned
 542  **
 543  ** A sysfs 'read-only' shost attribute.
 544  **/
 545
 546 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
 547         struct device_attribute *attr, char *buf)
 548 {
 549         ssize_t count;
 550
 551         count = pm80xx_get_fatal_dump(cdev, attr, buf);
 552         return count;
 553 }
 554
 555 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
 556
 557
 558 /**
 559  ** pm8001_ctl_gsm_log_show - gsm dump collection
 560  ** @cdev:pointer to embedded class device
 561  ** @buf: the buffer returned
 562  **A sysfs 'read-only' shost attribute.
 563  **/
 564 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
 565         struct device_attribute *attr, char *buf)
 566 {
 567         ssize_t count;
 568
 569         count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
 570         return count;
 571 }
 572
 573 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 574
 575 #define FLASH_CMD_NONE      0x00
 576 #define FLASH_CMD_UPDATE    0x01
 577 #define FLASH_CMD_SET_NVMD    0x02
 578
 579 struct flash_command {
 580      u8      command[8];
 581      int     code;
 582 };
 583
 584 static struct flash_command flash_command_table[] =
 585 {
 586      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 587      {"update",      FLASH_CMD_UPDATE},
 588      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 589 };
 590
 591 struct error_fw {
 592      char    *reason;
 593      int     err_code;
 594 };
 595
 596 static struct error_fw flash_error_table[] =
 597 {
 598      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 599      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 600      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 601      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 602      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 603      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 604      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 605      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 606      {"Flash in progress",              FLASH_IN_PROGRESS},
 607      {"Image file size Error",          FAIL_FILE_SIZE},
 608      {"Input parameter error",          FAIL_PARAMETERS},
 609      {"Out of memory",                  FAIL_OUT_MEMORY},
 610      {"OK", 0}  /* Last entry err_code = 0. */
 611 };
 612
 613 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 614 {
 615         struct pm8001_ioctl_payload     *payload;
 616         DECLARE_COMPLETION_ONSTACK(completion);
 617         u8              *ioctlbuffer;
 618         u32             ret;
 619         u32             length = 1024 * 5 + sizeof(*payload) - 1;
 620
 621         if (pm8001_ha->fw_image->size > 4096) {
 622                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 623                 return -EFAULT;
 624         }
 625
 626         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 627         if (!ioctlbuffer) {
 628                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 629                 return -ENOMEM;
 630         }
 631         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 632         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 633                                 pm8001_ha->fw_image->size);
 634         payload->length = pm8001_ha->fw_image->size;
 635         payload->id = 0;
 636         payload->minor_function = 0x1;
 637         pm8001_ha->nvmd_completion = &completion;
 638         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 639         if (ret) {
 640                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 641                 goto out;
 642         }
 643         wait_for_completion(&completion);
 644 out:
 645         kfree(ioctlbuffer);
 646         return ret;
 647 }
 648
 649 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 650 {
 651         struct pm8001_ioctl_payload     *payload;
 652         DECLARE_COMPLETION_ONSTACK(completion);
 653         u8              *ioctlbuffer;
 654         struct fw_control_info  *fwControl;
 655         u32             partitionSize, partitionSizeTmp;
 656         u32             loopNumber, loopcount;
 657         struct pm8001_fw_image_header *image_hdr;
 658         u32             sizeRead = 0;
 659         u32             ret = 0;
 660         u32             length = 1024 * 16 + sizeof(*payload) - 1;
 661
 662         if (pm8001_ha->fw_image->size < 28) {
 663                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 664                 return -EFAULT;
 665         }
 666         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 667         if (!ioctlbuffer) {
 668                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 669                 return -ENOMEM;
 670         }
 671         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 672         while (sizeRead < pm8001_ha->fw_image->size) {
 673                 partitionSizeTmp =
 674                         *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
 675                 partitionSize = be32_to_cpu(partitionSizeTmp);
 676                 loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
 677                                         IOCTL_BUF_SIZE);
 678                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 679                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 680                         payload->length = 1024*16;
 681                         payload->id = 0;
 682                         fwControl =
 683                               (struct fw_control_info *)&payload->func_specific;
 684                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 685                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 686                         fwControl->retcode = 0;/* OUT */
 687                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 688
 689                 /* for the last chunk of data in case file size is not even with
 690                 4k, load only the rest*/
 691                 if (((loopcount-loopNumber) == 1) &&
 692                         ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
 693                         fwControl->len =
 694                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 695                         memcpy((u8 *)fwControl->buffer,
 696                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 697                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
 698                         sizeRead +=
 699                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 700                 } else {
 701                         memcpy((u8 *)fwControl->buffer,
 702                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 703                                 IOCTL_BUF_SIZE);
 704                         sizeRead += IOCTL_BUF_SIZE;
 705                 }
 706
 707                 pm8001_ha->nvmd_completion = &completion;
 708                 ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 709                 if (ret) {
 710                         pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 711                         goto out;
 712                 }
 713                 wait_for_completion(&completion);
 714                 if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
 715                         pm8001_ha->fw_status = fwControl->retcode;
 716                         ret = -EFAULT;
 717                         goto out;
 718                 }
 719                 }
 720         }
 721 out:
 722         kfree(ioctlbuffer);
 723         return ret;
 724 }
 725 static ssize_t pm8001_store_update_fw(struct device *cdev,
 726                                       struct device_attribute *attr,
 727                                       const char *buf, size_t count)
 728 {
 729         struct Scsi_Host *shost = class_to_shost(cdev);
 730         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 731         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 732         char *cmd_ptr, *filename_ptr;
 733         int res, i;
 734         int flash_command = FLASH_CMD_NONE;
 735         int ret;
 736
 737         if (!capable(CAP_SYS_ADMIN))
 738                 return -EACCES;
 739
 740         /* this test protects us from running two flash processes at once,
 741          * so we should start with this test */
 742         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
 743                 return -EINPROGRESS;
 744         pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 745
 746         cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
 747         if (!cmd_ptr) {
 748                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 749                 return -ENOMEM;
 750         }
 751
 752         filename_ptr = cmd_ptr + count;
 753         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 754         if (res != 2) {
 755                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 756                 ret = -EINVAL;
 757                 goto out;
 758         }
 759
 760         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 761                 if (!memcmp(flash_command_table[i].command,
 762                                  cmd_ptr, strlen(cmd_ptr))) {
 763                         flash_command = flash_command_table[i].code;
 764                         break;
 765                 }
 766         }
 767         if (flash_command == FLASH_CMD_NONE) {
 768                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 769                 ret = -EINVAL;
 770                 goto out;
 771         }
 772
 773         ret = request_firmware(&pm8001_ha->fw_image,
 774                                filename_ptr,
 775                                pm8001_ha->dev);
 776
 777         if (ret) {
 778                 PM8001_FAIL_DBG(pm8001_ha,
 779                         pm8001_printk(
 780                         "Failed to load firmware image file %s, error %d\n",
 781                         filename_ptr, ret));
 782                 pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
 783                 goto out;
 784         }
 785
 786         if (FLASH_CMD_UPDATE == flash_command)
 787                 ret = pm8001_update_flash(pm8001_ha);
 788         else
 789                 ret = pm8001_set_nvmd(pm8001_ha);
 790
 791         release_firmware(pm8001_ha->fw_image);
 792 out:
 793         kfree(cmd_ptr);
 794
 795         if (ret)
 796                 return ret;
 797
 798         pm8001_ha->fw_status = FLASH_OK;
 799         return count;
 800 }
 801
 802 static ssize_t pm8001_show_update_fw(struct device *cdev,
 803                                      struct device_attribute *attr, char *buf)
 804 {
 805         int i;
 806         struct Scsi_Host *shost = class_to_shost(cdev);
 807         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 808         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 809
 810         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 811                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 812                         break;
 813         }
 814         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 815                 pm8001_ha->fw_status = FLASH_OK;
 816
 817         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 818                         flash_error_table[i].err_code,
 819                         flash_error_table[i].reason);
 820 }
 821
 822 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 823         pm8001_show_update_fw, pm8001_store_update_fw);
 824 struct device_attribute *pm8001_host_attrs[] = {
 825         &dev_attr_interface_rev,
 826         &dev_attr_controller_fatal_error,
 827         &dev_attr_fw_version,
 828         &dev_attr_update_fw,
 829         &dev_attr_aap_log,
 830         &dev_attr_iop_log,
 831         &dev_attr_fatal_log,
 832         &dev_attr_gsm_log,
 833         &dev_attr_max_out_io,
 834         &dev_attr_max_devices,
 835         &dev_attr_max_sg_list,
 836         &dev_attr_sas_spec_support,
 837         &dev_attr_logging_level,
 838         &dev_attr_event_log_size,
 839         &dev_attr_host_sas_address,
 840         &dev_attr_bios_version,
 841         &dev_attr_ib_log,
 842         &dev_attr_ob_log,
 843         &dev_attr_ila_version,
 844         &dev_attr_inc_fw_ver,
 845         NULL,
 846 };
 847