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 #include "pm8001_chips.h"
  45
  46 /* scsi host attributes */
  47
  48 /**
  49  * pm8001_ctl_mpi_interface_rev_show - MPI interface revision number
  50  * @cdev: pointer to embedded class device
  51  * @attr: device attribute (unused)
  52  * @buf: the buffer returned
  53  *
  54  * A sysfs 'read-only' shost attribute.
  55  */
  56 static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
  57         struct device_attribute *attr, char *buf)
  58 {
  59         struct Scsi_Host *shost = class_to_shost(cdev);
  60         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  61         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  62
  63         if (pm8001_ha->chip_id == chip_8001) {
  64                 return sysfs_emit(buf, "%d\n",
  65                         pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
  66         } else {
  67                 return sysfs_emit(buf, "%d\n",
  68                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
  69         }
  70 }
  71 static
  72 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
  73
  74 /**
  75  * controller_fatal_error_show - check controller is under fatal err
  76  * @cdev: pointer to embedded class device
  77  * @attr: device attribute (unused)
  78  * @buf: the buffer returned
  79  *
  80  * A sysfs 'read-only' shost attribute.
  81  */
  82 static ssize_t controller_fatal_error_show(struct device *cdev,
  83                 struct device_attribute *attr, char *buf)
  84 {
  85         struct Scsi_Host *shost = class_to_shost(cdev);
  86         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  87         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  88
  89         return sysfs_emit(buf, "%d\n",
  90                         pm8001_ha->controller_fatal_error);
  91 }
  92 static DEVICE_ATTR_RO(controller_fatal_error);
  93
  94 /**
  95  * pm8001_ctl_fw_version_show - firmware version
  96  * @cdev: pointer to embedded class device
  97  * @attr: device attribute (unused)
  98  * @buf: the buffer returned
  99  *
 100  * A sysfs 'read-only' shost attribute.
 101  */
 102 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
 103         struct device_attribute *attr, char *buf)
 104 {
 105         struct Scsi_Host *shost = class_to_shost(cdev);
 106         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 107         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 108
 109         if (pm8001_ha->chip_id == chip_8001) {
 110                 return sysfs_emit(buf, "%02x.%02x.%02x.%02x\n",
 111                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
 112                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
 113                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
 114                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
 115         } else {
 116                 return sysfs_emit(buf, "%02x.%02x.%02x.%02x\n",
 117                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
 118                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
 119                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
 120                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
 121         }
 122 }
 123 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
 124
 125 /**
 126  * pm8001_ctl_ila_version_show - ila version
 127  * @cdev: pointer to embedded class device
 128  * @attr: device attribute (unused)
 129  * @buf: the buffer returned
 130  *
 131  * A sysfs 'read-only' shost attribute.
 132  */
 133 static ssize_t pm8001_ctl_ila_version_show(struct device *cdev,
 134         struct device_attribute *attr, char *buf)
 135 {
 136         struct Scsi_Host *shost = class_to_shost(cdev);
 137         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 138         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 139
 140         if (pm8001_ha->chip_id != chip_8001) {
 141                 return sysfs_emit(buf, "%02x.%02x.%02x.%02x\n",
 142                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 24),
 143                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 16),
 144                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 8),
 145                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version));
 146         }
 147         return 0;
 148 }
 149 static DEVICE_ATTR(ila_version, 0444, pm8001_ctl_ila_version_show, NULL);
 150
 151 /**
 152  * pm8001_ctl_inactive_fw_version_show - Inactive firmware version number
 153  * @cdev: pointer to embedded class device
 154  * @attr: device attribute (unused)
 155  * @buf: the buffer returned
 156  *
 157  * A sysfs 'read-only' shost attribute.
 158  */
 159 static ssize_t pm8001_ctl_inactive_fw_version_show(struct device *cdev,
 160         struct device_attribute *attr, char *buf)
 161 {
 162         struct Scsi_Host *shost = class_to_shost(cdev);
 163         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 164         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 165
 166         if (pm8001_ha->chip_id != chip_8001) {
 167                 return sysfs_emit(buf, "%02x.%02x.%02x.%02x\n",
 168                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 24),
 169                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 16),
 170                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 8),
 171                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version));
 172         }
 173         return 0;
 174 }
 175 static
 176 DEVICE_ATTR(inc_fw_ver, 0444, pm8001_ctl_inactive_fw_version_show, NULL);
 177
 178 /**
 179  * pm8001_ctl_max_out_io_show - max outstanding io supported
 180  * @cdev: pointer to embedded class device
 181  * @attr: device attribute (unused)
 182  * @buf: the buffer returned
 183  *
 184  * A sysfs 'read-only' shost attribute.
 185  */
 186 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
 187         struct device_attribute *attr, char *buf)
 188 {
 189         struct Scsi_Host *shost = class_to_shost(cdev);
 190         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 191         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 192
 193         if (pm8001_ha->chip_id == chip_8001) {
 194                 return sysfs_emit(buf, "%d\n",
 195                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
 196         } else {
 197                 return sysfs_emit(buf, "%d\n",
 198                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
 199         }
 200 }
 201 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
 202 /**
 203  * pm8001_ctl_max_devices_show - max devices support
 204  * @cdev: pointer to embedded class device
 205  * @attr: device attribute (unused)
 206  * @buf: the buffer returned
 207  *
 208  * A sysfs 'read-only' shost attribute.
 209  */
 210 static ssize_t pm8001_ctl_max_devices_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         if (pm8001_ha->chip_id == chip_8001) {
 218                 return sysfs_emit(buf, "%04d\n",
 219                         (u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16));
 220         } else {
 221                 return sysfs_emit(buf, "%04d\n",
 222                         (u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16));
 223         }
 224 }
 225 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
 226 /**
 227  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
 228  * hardware limitation
 229  * @cdev: pointer to embedded class device
 230  * @attr: device attribute (unused)
 231  * @buf: the buffer returned
 232  *
 233  * A sysfs 'read-only' shost attribute.
 234  */
 235 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
 236         struct device_attribute *attr, char *buf)
 237 {
 238         struct Scsi_Host *shost = class_to_shost(cdev);
 239         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 240         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 241
 242         if (pm8001_ha->chip_id == chip_8001) {
 243                 return sysfs_emit(buf, "%04d\n",
 244                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF);
 245         } else {
 246                 return sysfs_emit(buf, "%04d\n",
 247                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF);
 248         }
 249 }
 250 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
 251
 252 #define SAS_1_0 0x1
 253 #define SAS_1_1 0x2
 254 #define SAS_2_0 0x4
 255
 256 static ssize_t
 257 show_sas_spec_support_status(unsigned int mode, char *buf)
 258 {
 259         ssize_t len = 0;
 260
 261         if (mode & SAS_1_1)
 262                 len = sprintf(buf, "%s", "SAS1.1");
 263         if (mode & SAS_2_0)
 264                 len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
 265         len += sprintf(buf + len, "\n");
 266
 267         return len;
 268 }
 269
 270 /**
 271  * pm8001_ctl_sas_spec_support_show - sas spec supported
 272  * @cdev: pointer to embedded class device
 273  * @attr: device attribute (unused)
 274  * @buf: the buffer returned
 275  *
 276  * A sysfs 'read-only' shost attribute.
 277  */
 278 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
 279         struct device_attribute *attr, char *buf)
 280 {
 281         unsigned int mode;
 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         /* fe000000 means supports SAS2.1 */
 286         if (pm8001_ha->chip_id == chip_8001)
 287                 mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
 288                                                         0xfe000000)>>25;
 289         else
 290                 /* fe000000 means supports SAS2.1 */
 291                 mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
 292                                                         0xfe000000)>>25;
 293         return show_sas_spec_support_status(mode, buf);
 294 }
 295 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
 296                    pm8001_ctl_sas_spec_support_show, NULL);
 297
 298 /**
 299  * pm8001_ctl_host_sas_address_show - sas address
 300  * @cdev: pointer to embedded class device
 301  * @attr: device attribute (unused)
 302  * @buf: the buffer returned
 303  *
 304  * This is the controller sas address
 305  *
 306  * A sysfs 'read-only' shost attribute.
 307  */
 308 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
 309         struct device_attribute *attr, char *buf)
 310 {
 311         struct Scsi_Host *shost = class_to_shost(cdev);
 312         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 313         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 314         return sysfs_emit(buf, "0x%016llx\n",
 315                         be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
 316 }
 317 static DEVICE_ATTR(host_sas_address, S_IRUGO,
 318                    pm8001_ctl_host_sas_address_show, NULL);
 319
 320 /**
 321  * pm8001_ctl_logging_level_show - logging level
 322  * @cdev: pointer to embedded class device
 323  * @attr: device attribute (unused)
 324  * @buf: the buffer returned
 325  *
 326  * A sysfs 'read/write' shost attribute.
 327  */
 328 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
 329         struct device_attribute *attr, char *buf)
 330 {
 331         struct Scsi_Host *shost = class_to_shost(cdev);
 332         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 333         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 334
 335         return sysfs_emit(buf, "%08xh\n", pm8001_ha->logging_level);
 336 }
 337
 338 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
 339         struct device_attribute *attr, const char *buf, size_t count)
 340 {
 341         struct Scsi_Host *shost = class_to_shost(cdev);
 342         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 343         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 344         int val = 0;
 345
 346         if (sscanf(buf, "%x", &val) != 1)
 347                 return -EINVAL;
 348
 349         pm8001_ha->logging_level = val;
 350         return strlen(buf);
 351 }
 352
 353 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
 354         pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
 355 /**
 356  * pm8001_ctl_aap_log_show - aap1 event log
 357  * @cdev: pointer to embedded class device
 358  * @attr: device attribute (unused)
 359  * @buf: the buffer returned
 360  *
 361  * A sysfs 'read-only' shost attribute.
 362  */
 363 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
 364         struct device_attribute *attr, char *buf)
 365 {
 366         struct Scsi_Host *shost = class_to_shost(cdev);
 367         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 368         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 369         u8 *ptr = (u8 *)pm8001_ha->memoryMap.region[AAP1].virt_ptr;
 370         int i;
 371
 372         char *str = buf;
 373         int max = 2;
 374         for (i = 0; i < max; i++) {
 375                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 376                                "0x%08x 0x%08x\n",
 377                                pm8001_ctl_aap1_memmap(ptr, i, 0),
 378                                pm8001_ctl_aap1_memmap(ptr, i, 4),
 379                                pm8001_ctl_aap1_memmap(ptr, i, 8),
 380                                pm8001_ctl_aap1_memmap(ptr, i, 12),
 381                                pm8001_ctl_aap1_memmap(ptr, i, 16),
 382                                pm8001_ctl_aap1_memmap(ptr, i, 20),
 383                                pm8001_ctl_aap1_memmap(ptr, i, 24),
 384                                pm8001_ctl_aap1_memmap(ptr, i, 28));
 385         }
 386
 387         return str - buf;
 388 }
 389 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
 390 /**
 391  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
 392  * @cdev:pointer to embedded class device
 393  * @attr: device attribute (unused)
 394  * @buf: the buffer returned
 395  *
 396  * A sysfs 'read-only' shost attribute.
 397  */
 398 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
 399         struct device_attribute *attr, char *buf)
 400 {
 401         struct Scsi_Host *shost = class_to_shost(cdev);
 402         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 403         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 404         int offset;
 405         char *str = buf;
 406         int start = 0;
 407         u32 ib_offset = pm8001_ha->ib_offset;
 408         u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
 409 #define IB_MEMMAP(c)    \
 410                 (*(u32 *)((u8 *)pm8001_ha->     \
 411                 memoryMap.region[ib_offset].virt_ptr +  \
 412                 pm8001_ha->evtlog_ib_offset + (c)))
 413
 414         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 415                 str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
 416                 start = start + 4;
 417         }
 418         pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
 419         if (((pm8001_ha->evtlog_ib_offset) % queue_size) == 0)
 420                 pm8001_ha->evtlog_ib_offset = 0;
 421
 422         return str - buf;
 423 }
 424
 425 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
 426 /**
 427  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
 428  * @cdev:pointer to embedded class device
 429  * @attr: device attribute (unused)
 430  * @buf: the buffer returned
 431  *
 432  * A sysfs 'read-only' shost attribute.
 433  */
 434
 435 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
 436         struct device_attribute *attr, char *buf)
 437 {
 438         struct Scsi_Host *shost = class_to_shost(cdev);
 439         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 440         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 441         int offset;
 442         char *str = buf;
 443         int start = 0;
 444         u32 ob_offset = pm8001_ha->ob_offset;
 445         u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
 446 #define OB_MEMMAP(c)    \
 447                 (*(u32 *)((u8 *)pm8001_ha->     \
 448                 memoryMap.region[ob_offset].virt_ptr +  \
 449                 pm8001_ha->evtlog_ob_offset + (c)))
 450
 451         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 452                 str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
 453                 start = start + 4;
 454         }
 455         pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
 456         if (((pm8001_ha->evtlog_ob_offset) % queue_size) == 0)
 457                 pm8001_ha->evtlog_ob_offset = 0;
 458
 459         return str - buf;
 460 }
 461 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
 462 /**
 463  * pm8001_ctl_bios_version_show - Bios version Display
 464  * @cdev:pointer to embedded class device
 465  * @attr: device attribute (unused)
 466  * @buf:the buffer returned
 467  *
 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 sysfs_emit(buf, "%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_iop_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 sysfs_emit(buf, "%08x\n",
 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  *
 629  * A sysfs 'read-only' shost attribute.
 630  */
 631 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
 632         struct device_attribute *attr, char *buf)
 633 {
 634         ssize_t count;
 635
 636         count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
 637         return count;
 638 }
 639
 640 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 641
 642 #define FLASH_CMD_NONE      0x00
 643 #define FLASH_CMD_UPDATE    0x01
 644 #define FLASH_CMD_SET_NVMD    0x02
 645
 646 struct flash_command {
 647      u8      command[8];
 648      int     code;
 649 };
 650
 651 static const struct flash_command flash_command_table[] = {
 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 const struct error_fw flash_error_table[] = {
 663      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 664      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 665      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 666      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 667      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 668      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 669      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 670      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 671      {"Flash in progress",              FLASH_IN_PROGRESS},
 672      {"Image file size Error",          FAIL_FILE_SIZE},
 673      {"Input parameter error",          FAIL_PARAMETERS},
 674      {"Out of memory",                  FAIL_OUT_MEMORY},
 675      {"OK", 0}  /* Last entry err_code = 0. */
 676 };
 677
 678 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 679 {
 680         struct pm8001_ioctl_payload     *payload;
 681         DECLARE_COMPLETION_ONSTACK(completion);
 682         u8              *ioctlbuffer;
 683         u32             ret;
 684         u32             length = 1024 * 5 + sizeof(*payload) - 1;
 685
 686         if (pm8001_ha->fw_image->size > 4096) {
 687                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 688                 return -EFAULT;
 689         }
 690
 691         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 692         if (!ioctlbuffer) {
 693                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 694                 return -ENOMEM;
 695         }
 696         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 697         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 698                                 pm8001_ha->fw_image->size);
 699         payload->wr_length = pm8001_ha->fw_image->size;
 700         payload->id = 0;
 701         payload->minor_function = 0x1;
 702         pm8001_ha->nvmd_completion = &completion;
 703         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 704         if (ret) {
 705                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 706                 goto out;
 707         }
 708         wait_for_completion(&completion);
 709 out:
 710         kfree(ioctlbuffer);
 711         return ret;
 712 }
 713
 714 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 715 {
 716         struct pm8001_ioctl_payload     *payload;
 717         DECLARE_COMPLETION_ONSTACK(completion);
 718         u8              *ioctlbuffer;
 719         struct fw_control_info  *fwControl;
 720         __be32          partitionSizeTmp;
 721         u32             partitionSize;
 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         u32             fc_len;
 728         u8              *read_buf;
 729
 730         if (pm8001_ha->fw_image->size < 28) {
 731                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 732                 return -EFAULT;
 733         }
 734         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 735         if (!ioctlbuffer) {
 736                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 737                 return -ENOMEM;
 738         }
 739         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 740         while (sizeRead < pm8001_ha->fw_image->size) {
 741                 partitionSizeTmp =
 742                         *(__be32 *)((u8 *)&image_hdr->image_length + sizeRead);
 743                 partitionSize = be32_to_cpu(partitionSizeTmp);
 744                 loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
 745                                         IOCTL_BUF_SIZE);
 746                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 747                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 748                         payload->wr_length = 1024*16;
 749                         payload->id = 0;
 750                         fwControl =
 751                               (struct fw_control_info *)&payload->func_specific;
 752                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 753                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 754                         fwControl->retcode = 0;/* OUT */
 755                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 756
 757                         /*
 758                          * for the last chunk of data in case file size is
 759                          * not even with 4k, load only the rest
 760                          */
 761
 762                         read_buf  = (u8 *)pm8001_ha->fw_image->data + sizeRead;
 763                         fc_len = (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 764
 765                         if (loopcount - loopNumber == 1 && fc_len) {
 766                                 fwControl->len = fc_len;
 767                                 memcpy((u8 *)fwControl->buffer, read_buf, fc_len);
 768                                 sizeRead += fc_len;
 769                         } else {
 770                                 memcpy((u8 *)fwControl->buffer, read_buf, IOCTL_BUF_SIZE);
 771                                 sizeRead += IOCTL_BUF_SIZE;
 772                         }
 773
 774                         pm8001_ha->nvmd_completion = &completion;
 775                         ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 776                         if (ret) {
 777                                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 778                                 goto out;
 779                         }
 780                         wait_for_completion(&completion);
 781                         if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
 782                                 pm8001_ha->fw_status = fwControl->retcode;
 783                                 ret = -EFAULT;
 784                                 goto out;
 785                         }
 786                 }
 787         }
 788 out:
 789         kfree(ioctlbuffer);
 790         return ret;
 791 }
 792 static ssize_t pm8001_store_update_fw(struct device *cdev,
 793                                       struct device_attribute *attr,
 794                                       const char *buf, size_t count)
 795 {
 796         struct Scsi_Host *shost = class_to_shost(cdev);
 797         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 798         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 799         char *cmd_ptr, *filename_ptr;
 800         int res, i;
 801         int flash_command = FLASH_CMD_NONE;
 802         int ret;
 803
 804         if (!capable(CAP_SYS_ADMIN))
 805                 return -EACCES;
 806
 807         /* this test protects us from running two flash processes at once,
 808          * so we should start with this test */
 809         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
 810                 return -EINPROGRESS;
 811         pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 812
 813         cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
 814         if (!cmd_ptr) {
 815                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 816                 return -ENOMEM;
 817         }
 818
 819         filename_ptr = cmd_ptr + count;
 820         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 821         if (res != 2) {
 822                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 823                 ret = -EINVAL;
 824                 goto out;
 825         }
 826
 827         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 828                 if (!memcmp(flash_command_table[i].command,
 829                                  cmd_ptr, strlen(cmd_ptr))) {
 830                         flash_command = flash_command_table[i].code;
 831                         break;
 832                 }
 833         }
 834         if (flash_command == FLASH_CMD_NONE) {
 835                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 836                 ret = -EINVAL;
 837                 goto out;
 838         }
 839
 840         ret = request_firmware(&pm8001_ha->fw_image,
 841                                filename_ptr,
 842                                pm8001_ha->dev);
 843
 844         if (ret) {
 845                 pm8001_dbg(pm8001_ha, FAIL,
 846                            "Failed to load firmware image file %s, error %d\n",
 847                            filename_ptr, ret);
 848                 pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
 849                 goto out;
 850         }
 851
 852         if (FLASH_CMD_UPDATE == flash_command)
 853                 ret = pm8001_update_flash(pm8001_ha);
 854         else
 855                 ret = pm8001_set_nvmd(pm8001_ha);
 856
 857         release_firmware(pm8001_ha->fw_image);
 858 out:
 859         kfree(cmd_ptr);
 860
 861         if (ret)
 862                 return ret;
 863
 864         pm8001_ha->fw_status = FLASH_OK;
 865         return count;
 866 }
 867
 868 static ssize_t pm8001_show_update_fw(struct device *cdev,
 869                                      struct device_attribute *attr, char *buf)
 870 {
 871         int i;
 872         struct Scsi_Host *shost = class_to_shost(cdev);
 873         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 874         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 875
 876         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 877                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 878                         break;
 879         }
 880         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 881                 pm8001_ha->fw_status = FLASH_OK;
 882
 883         return sysfs_emit(buf, "status=%x %s\n",
 884                           flash_error_table[i].err_code,
 885                           flash_error_table[i].reason);
 886 }
 887 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 888         pm8001_show_update_fw, pm8001_store_update_fw);
 889
 890 static const char *const mpiStateText[] = {
 891         "MPI is not initialized",
 892         "MPI is successfully initialized",
 893         "MPI termination is in progress",
 894         "MPI initialization failed with error in [31:16]"
 895 };
 896
 897 /**
 898  * ctl_mpi_state_show - controller MPI state check
 899  * @cdev: pointer to embedded class device
 900  * @attr: device attribute (unused)
 901  * @buf: the buffer returned
 902  *
 903  * A sysfs 'read-only' shost attribute.
 904  */
 905 static ssize_t ctl_mpi_state_show(struct device *cdev,
 906                 struct device_attribute *attr, char *buf)
 907 {
 908         struct Scsi_Host *shost = class_to_shost(cdev);
 909         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 910         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 911         unsigned int mpidw0;
 912
 913         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 914         return sysfs_emit(buf, "%s\n", mpiStateText[mpidw0 & 0x0003]);
 915 }
 916 static DEVICE_ATTR_RO(ctl_mpi_state);
 917
 918 /**
 919  * ctl_hmi_error_show - controller MPI initialization fails
 920  * @cdev: pointer to embedded class device
 921  * @attr: device attribute (unused)
 922  * @buf: the buffer returned
 923  *
 924  * A sysfs 'read-only' shost attribute.
 925  */
 926 static ssize_t ctl_hmi_error_show(struct device *cdev,
 927                 struct device_attribute *attr, char *buf)
 928 {
 929         struct Scsi_Host *shost = class_to_shost(cdev);
 930         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 931         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 932         unsigned int mpidw0;
 933
 934         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 935         return sysfs_emit(buf, "0x%08x\n", (mpidw0 >> 16));
 936 }
 937 static DEVICE_ATTR_RO(ctl_hmi_error);
 938
 939 /**
 940  * ctl_raae_count_show - controller raae count check
 941  * @cdev: pointer to embedded class device
 942  * @attr: device attribute (unused)
 943  * @buf: the buffer returned
 944  *
 945  * A sysfs 'read-only' shost attribute.
 946  */
 947 static ssize_t ctl_raae_count_show(struct device *cdev,
 948                 struct device_attribute *attr, char *buf)
 949 {
 950         struct Scsi_Host *shost = class_to_shost(cdev);
 951         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 952         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 953         unsigned int raaecnt;
 954
 955         raaecnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 12);
 956         return sysfs_emit(buf, "0x%08x\n", raaecnt);
 957 }
 958 static DEVICE_ATTR_RO(ctl_raae_count);
 959
 960 /**
 961  * ctl_iop0_count_show - controller iop0 count check
 962  * @cdev: pointer to embedded class device
 963  * @attr: device attribute (unused)
 964  * @buf: the buffer returned
 965  *
 966  * A sysfs 'read-only' shost attribute.
 967  */
 968 static ssize_t ctl_iop0_count_show(struct device *cdev,
 969                 struct device_attribute *attr, char *buf)
 970 {
 971         struct Scsi_Host *shost = class_to_shost(cdev);
 972         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 973         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 974         unsigned int iop0cnt;
 975
 976         iop0cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 16);
 977         return sysfs_emit(buf, "0x%08x\n", iop0cnt);
 978 }
 979 static DEVICE_ATTR_RO(ctl_iop0_count);
 980
 981 /**
 982  * ctl_iop1_count_show - controller iop1 count check
 983  * @cdev: pointer to embedded class device
 984  * @attr: device attribute (unused)
 985  * @buf: the buffer returned
 986  *
 987  * A sysfs 'read-only' shost attribute.
 988  */
 989 static ssize_t ctl_iop1_count_show(struct device *cdev,
 990                 struct device_attribute *attr, char *buf)
 991 {
 992         struct Scsi_Host *shost = class_to_shost(cdev);
 993         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 994         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 995         unsigned int iop1cnt;
 996
 997         iop1cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 20);
 998         return sysfs_emit(buf, "0x%08x\n", iop1cnt);
 999
1000 }
1001 static DEVICE_ATTR_RO(ctl_iop1_count);
1002
1003 static struct attribute *pm8001_host_attrs[] = {
1004         &dev_attr_interface_rev.attr,
1005         &dev_attr_controller_fatal_error.attr,
1006         &dev_attr_fw_version.attr,
1007         &dev_attr_update_fw.attr,
1008         &dev_attr_aap_log.attr,
1009         &dev_attr_iop_log.attr,
1010         &dev_attr_fatal_log.attr,
1011         &dev_attr_non_fatal_log.attr,
1012         &dev_attr_non_fatal_count.attr,
1013         &dev_attr_gsm_log.attr,
1014         &dev_attr_max_out_io.attr,
1015         &dev_attr_max_devices.attr,
1016         &dev_attr_max_sg_list.attr,
1017         &dev_attr_sas_spec_support.attr,
1018         &dev_attr_logging_level.attr,
1019         &dev_attr_event_log_size.attr,
1020         &dev_attr_host_sas_address.attr,
1021         &dev_attr_bios_version.attr,
1022         &dev_attr_ib_log.attr,
1023         &dev_attr_ob_log.attr,
1024         &dev_attr_ila_version.attr,
1025         &dev_attr_inc_fw_ver.attr,
1026         &dev_attr_ctl_mpi_state.attr,
1027         &dev_attr_ctl_hmi_error.attr,
1028         &dev_attr_ctl_raae_count.attr,
1029         &dev_attr_ctl_iop0_count.attr,
1030         &dev_attr_ctl_iop1_count.attr,
1031         NULL,
1032 };
1033
1034 static const struct attribute_group pm8001_host_attr_group = {
1035         .attrs = pm8001_host_attrs
1036 };
1037
1038 const struct attribute_group *pm8001_host_groups[] = {
1039         &pm8001_host_attr_group,
1040         NULL
1041 };