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 snprintf(buf, PAGE_SIZE, "%d\n",
  65                         pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
  66         } else {
  67                 return snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%d\n",
 195                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
 196         } else {
 197                 return snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%04d\n",
 219                         (u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
 220                         );
 221         } else {
 222                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 223                         (u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
 224                         );
 225         }
 226 }
 227 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
 228 /**
 229  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
 230  * hardware limitation
 231  * @cdev: pointer to embedded class device
 232  * @attr: device attribute (unused)
 233  * @buf: the buffer returned
 234  *
 235  * A sysfs 'read-only' shost attribute.
 236  */
 237 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
 238         struct device_attribute *attr, char *buf)
 239 {
 240         struct Scsi_Host *shost = class_to_shost(cdev);
 241         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 242         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 243
 244         if (pm8001_ha->chip_id == chip_8001) {
 245                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 246                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
 247                         );
 248         } else {
 249                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 250                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
 251                         );
 252         }
 253 }
 254 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
 255
 256 #define SAS_1_0 0x1
 257 #define SAS_1_1 0x2
 258 #define SAS_2_0 0x4
 259
 260 static ssize_t
 261 show_sas_spec_support_status(unsigned int mode, char *buf)
 262 {
 263         ssize_t len = 0;
 264
 265         if (mode & SAS_1_1)
 266                 len = sprintf(buf, "%s", "SAS1.1");
 267         if (mode & SAS_2_0)
 268                 len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
 269         len += sprintf(buf + len, "\n");
 270
 271         return len;
 272 }
 273
 274 /**
 275  * pm8001_ctl_sas_spec_support_show - sas spec supported
 276  * @cdev: pointer to embedded class device
 277  * @attr: device attribute (unused)
 278  * @buf: the buffer returned
 279  *
 280  * A sysfs 'read-only' shost attribute.
 281  */
 282 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
 283         struct device_attribute *attr, char *buf)
 284 {
 285         unsigned int mode;
 286         struct Scsi_Host *shost = class_to_shost(cdev);
 287         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 288         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 289         /* fe000000 means supports SAS2.1 */
 290         if (pm8001_ha->chip_id == chip_8001)
 291                 mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
 292                                                         0xfe000000)>>25;
 293         else
 294                 /* fe000000 means supports SAS2.1 */
 295                 mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
 296                                                         0xfe000000)>>25;
 297         return show_sas_spec_support_status(mode, buf);
 298 }
 299 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
 300                    pm8001_ctl_sas_spec_support_show, NULL);
 301
 302 /**
 303  * pm8001_ctl_host_sas_address_show - sas address
 304  * @cdev: pointer to embedded class device
 305  * @attr: device attribute (unused)
 306  * @buf: the buffer returned
 307  *
 308  * This is the controller sas address
 309  *
 310  * A sysfs 'read-only' shost attribute.
 311  */
 312 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
 313         struct device_attribute *attr, char *buf)
 314 {
 315         struct Scsi_Host *shost = class_to_shost(cdev);
 316         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 317         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 318         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
 319                         be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
 320 }
 321 static DEVICE_ATTR(host_sas_address, S_IRUGO,
 322                    pm8001_ctl_host_sas_address_show, NULL);
 323
 324 /**
 325  * pm8001_ctl_logging_level_show - logging level
 326  * @cdev: pointer to embedded class device
 327  * @attr: device attribute (unused)
 328  * @buf: the buffer returned
 329  *
 330  * A sysfs 'read/write' shost attribute.
 331  */
 332 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
 333         struct device_attribute *attr, char *buf)
 334 {
 335         struct Scsi_Host *shost = class_to_shost(cdev);
 336         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 337         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 338
 339         return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
 340 }
 341
 342 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
 343         struct device_attribute *attr, const char *buf, size_t count)
 344 {
 345         struct Scsi_Host *shost = class_to_shost(cdev);
 346         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 347         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 348         int val = 0;
 349
 350         if (sscanf(buf, "%x", &val) != 1)
 351                 return -EINVAL;
 352
 353         pm8001_ha->logging_level = val;
 354         return strlen(buf);
 355 }
 356
 357 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
 358         pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
 359 /**
 360  * pm8001_ctl_aap_log_show - aap1 event log
 361  * @cdev: pointer to embedded class device
 362  * @attr: device attribute (unused)
 363  * @buf: the buffer returned
 364  *
 365  * A sysfs 'read-only' shost attribute.
 366  */
 367 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
 368         struct device_attribute *attr, char *buf)
 369 {
 370         struct Scsi_Host *shost = class_to_shost(cdev);
 371         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 372         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 373         u8 *ptr = (u8 *)pm8001_ha->memoryMap.region[AAP1].virt_ptr;
 374         int i;
 375
 376         char *str = buf;
 377         int max = 2;
 378         for (i = 0; i < max; i++) {
 379                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 380                                "0x%08x 0x%08x\n",
 381                                pm8001_ctl_aap1_memmap(ptr, i, 0),
 382                                pm8001_ctl_aap1_memmap(ptr, i, 4),
 383                                pm8001_ctl_aap1_memmap(ptr, i, 8),
 384                                pm8001_ctl_aap1_memmap(ptr, i, 12),
 385                                pm8001_ctl_aap1_memmap(ptr, i, 16),
 386                                pm8001_ctl_aap1_memmap(ptr, i, 20),
 387                                pm8001_ctl_aap1_memmap(ptr, i, 24),
 388                                pm8001_ctl_aap1_memmap(ptr, i, 28));
 389         }
 390
 391         return str - buf;
 392 }
 393 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
 394 /**
 395  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
 396  * @cdev:pointer to embedded class device
 397  * @attr: device attribute (unused)
 398  * @buf: the buffer returned
 399  *
 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         u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
 413 #define IB_MEMMAP(c)    \
 414                 (*(u32 *)((u8 *)pm8001_ha->     \
 415                 memoryMap.region[ib_offset].virt_ptr +  \
 416                 pm8001_ha->evtlog_ib_offset + (c)))
 417
 418         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 419                 str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
 420                 start = start + 4;
 421         }
 422         pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
 423         if (((pm8001_ha->evtlog_ib_offset) % queue_size) == 0)
 424                 pm8001_ha->evtlog_ib_offset = 0;
 425
 426         return str - buf;
 427 }
 428
 429 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
 430 /**
 431  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
 432  * @cdev:pointer to embedded class device
 433  * @attr: device attribute (unused)
 434  * @buf: the buffer returned
 435  *
 436  * A sysfs 'read-only' shost attribute.
 437  */
 438
 439 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
 440         struct device_attribute *attr, char *buf)
 441 {
 442         struct Scsi_Host *shost = class_to_shost(cdev);
 443         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 444         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 445         int offset;
 446         char *str = buf;
 447         int start = 0;
 448         u32 ob_offset = pm8001_ha->ob_offset;
 449         u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
 450 #define OB_MEMMAP(c)    \
 451                 (*(u32 *)((u8 *)pm8001_ha->     \
 452                 memoryMap.region[ob_offset].virt_ptr +  \
 453                 pm8001_ha->evtlog_ob_offset + (c)))
 454
 455         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 456                 str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
 457                 start = start + 4;
 458         }
 459         pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
 460         if (((pm8001_ha->evtlog_ob_offset) % queue_size) == 0)
 461                 pm8001_ha->evtlog_ob_offset = 0;
 462
 463         return str - buf;
 464 }
 465 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
 466 /**
 467  * pm8001_ctl_bios_version_show - Bios version Display
 468  * @cdev:pointer to embedded class device
 469  * @attr: device attribute (unused)
 470  * @buf:the buffer returned
 471  *
 472  * A sysfs 'read-only' shost attribute.
 473  */
 474 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
 475         struct device_attribute *attr, char *buf)
 476 {
 477         struct Scsi_Host *shost = class_to_shost(cdev);
 478         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 479         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 480         char *str = buf;
 481         int bios_index;
 482         DECLARE_COMPLETION_ONSTACK(completion);
 483         struct pm8001_ioctl_payload payload;
 484
 485         pm8001_ha->nvmd_completion = &completion;
 486         payload.minor_function = 7;
 487         payload.offset = 0;
 488         payload.rd_length = 4096;
 489         payload.func_specific = kzalloc(4096, GFP_KERNEL);
 490         if (!payload.func_specific)
 491                 return -ENOMEM;
 492         if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
 493                 kfree(payload.func_specific);
 494                 return -ENOMEM;
 495         }
 496         wait_for_completion(&completion);
 497         for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
 498                 bios_index++)
 499                 str += sprintf(str, "%c",
 500                         *(payload.func_specific+bios_index));
 501         kfree(payload.func_specific);
 502         return str - buf;
 503 }
 504 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
 505 /**
 506  * event_log_size_show - event log size
 507  * @cdev: pointer to embedded class device
 508  * @attr: device attribute (unused)
 509  * @buf: the buffer returned
 510  *
 511  * A sysfs read  shost attribute.
 512  */
 513 static ssize_t event_log_size_show(struct device *cdev,
 514         struct device_attribute *attr, char *buf)
 515 {
 516         struct Scsi_Host *shost = class_to_shost(cdev);
 517         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 518         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 519
 520         return snprintf(buf, PAGE_SIZE, "%d\n",
 521                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size);
 522 }
 523 static DEVICE_ATTR_RO(event_log_size);
 524 /**
 525  * pm8001_ctl_iop_log_show - IOP event log
 526  * @cdev: pointer to embedded class device
 527  * @attr: device attribute (unused)
 528  * @buf: the buffer returned
 529  *
 530  * A sysfs 'read-only' shost attribute.
 531  */
 532 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 533         struct device_attribute *attr, char *buf)
 534 {
 535         struct Scsi_Host *shost = class_to_shost(cdev);
 536         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 537         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 538         char *str = buf;
 539         u32 read_size =
 540                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
 541         static u32 start, end, count;
 542         u32 max_read_times = 32;
 543         u32 max_count = (read_size * 1024) / (max_read_times * 4);
 544         u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
 545
 546         if ((count % max_count) == 0) {
 547                 start = 0;
 548                 end = max_read_times;
 549                 count = 0;
 550         } else {
 551                 start = end;
 552                 end = end + max_read_times;
 553         }
 554
 555         for (; start < end; start++)
 556                 str += sprintf(str, "%08x ", *(temp+start));
 557         count++;
 558         return str - buf;
 559 }
 560 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 561
 562 /**
 563  * pm8001_ctl_fatal_log_show - fatal error logging
 564  * @cdev:pointer to embedded class device
 565  * @attr: device attribute
 566  * @buf: the buffer returned
 567  *
 568  * A sysfs 'read-only' shost attribute.
 569  */
 570
 571 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
 572         struct device_attribute *attr, char *buf)
 573 {
 574         ssize_t count;
 575
 576         count = pm80xx_get_fatal_dump(cdev, attr, buf);
 577         return count;
 578 }
 579
 580 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
 581
 582 /**
 583  * non_fatal_log_show - non fatal error logging
 584  * @cdev:pointer to embedded class device
 585  * @attr: device attribute
 586  * @buf: the buffer returned
 587  *
 588  * A sysfs 'read-only' shost attribute.
 589  */
 590 static ssize_t non_fatal_log_show(struct device *cdev,
 591         struct device_attribute *attr, char *buf)
 592 {
 593         u32 count;
 594
 595         count = pm80xx_get_non_fatal_dump(cdev, attr, buf);
 596         return count;
 597 }
 598 static DEVICE_ATTR_RO(non_fatal_log);
 599
 600 static ssize_t non_fatal_count_show(struct device *cdev,
 601                 struct device_attribute *attr, char *buf)
 602 {
 603         struct Scsi_Host *shost = class_to_shost(cdev);
 604         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 605         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 606
 607         return snprintf(buf, PAGE_SIZE, "%08x",
 608                         pm8001_ha->non_fatal_count);
 609 }
 610
 611 static ssize_t non_fatal_count_store(struct device *cdev,
 612                 struct device_attribute *attr, const char *buf, size_t count)
 613 {
 614         struct Scsi_Host *shost = class_to_shost(cdev);
 615         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 616         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 617         int val = 0;
 618
 619         if (kstrtoint(buf, 16, &val) != 0)
 620                 return -EINVAL;
 621
 622         pm8001_ha->non_fatal_count = val;
 623         return strlen(buf);
 624 }
 625 static DEVICE_ATTR_RW(non_fatal_count);
 626
 627 /**
 628  * pm8001_ctl_gsm_log_show - gsm dump collection
 629  * @cdev:pointer to embedded class device
 630  * @attr: device attribute (unused)
 631  * @buf: the buffer returned
 632  *
 633  * A sysfs 'read-only' shost attribute.
 634  */
 635 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
 636         struct device_attribute *attr, char *buf)
 637 {
 638         ssize_t count;
 639
 640         count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
 641         return count;
 642 }
 643
 644 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 645
 646 #define FLASH_CMD_NONE      0x00
 647 #define FLASH_CMD_UPDATE    0x01
 648 #define FLASH_CMD_SET_NVMD    0x02
 649
 650 struct flash_command {
 651      u8      command[8];
 652      int     code;
 653 };
 654
 655 static const struct flash_command flash_command_table[] = {
 656      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 657      {"update",      FLASH_CMD_UPDATE},
 658      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 659 };
 660
 661 struct error_fw {
 662      char    *reason;
 663      int     err_code;
 664 };
 665
 666 static const struct error_fw flash_error_table[] = {
 667      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 668      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 669      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 670      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 671      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 672      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 673      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 674      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 675      {"Flash in progress",              FLASH_IN_PROGRESS},
 676      {"Image file size Error",          FAIL_FILE_SIZE},
 677      {"Input parameter error",          FAIL_PARAMETERS},
 678      {"Out of memory",                  FAIL_OUT_MEMORY},
 679      {"OK", 0}  /* Last entry err_code = 0. */
 680 };
 681
 682 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 683 {
 684         struct pm8001_ioctl_payload     *payload;
 685         DECLARE_COMPLETION_ONSTACK(completion);
 686         u8              *ioctlbuffer;
 687         u32             ret;
 688         u32             length = 1024 * 5 + sizeof(*payload) - 1;
 689
 690         if (pm8001_ha->fw_image->size > 4096) {
 691                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 692                 return -EFAULT;
 693         }
 694
 695         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 696         if (!ioctlbuffer) {
 697                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 698                 return -ENOMEM;
 699         }
 700         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 701         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 702                                 pm8001_ha->fw_image->size);
 703         payload->wr_length = pm8001_ha->fw_image->size;
 704         payload->id = 0;
 705         payload->minor_function = 0x1;
 706         pm8001_ha->nvmd_completion = &completion;
 707         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 708         if (ret) {
 709                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 710                 goto out;
 711         }
 712         wait_for_completion(&completion);
 713 out:
 714         kfree(ioctlbuffer);
 715         return ret;
 716 }
 717
 718 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 719 {
 720         struct pm8001_ioctl_payload     *payload;
 721         DECLARE_COMPLETION_ONSTACK(completion);
 722         u8              *ioctlbuffer;
 723         struct fw_control_info  *fwControl;
 724         __be32          partitionSizeTmp;
 725         u32             partitionSize;
 726         u32             loopNumber, loopcount;
 727         struct pm8001_fw_image_header *image_hdr;
 728         u32             sizeRead = 0;
 729         u32             ret = 0;
 730         u32             length = 1024 * 16 + sizeof(*payload) - 1;
 731         u32             fc_len;
 732         u8              *read_buf;
 733
 734         if (pm8001_ha->fw_image->size < 28) {
 735                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 736                 return -EFAULT;
 737         }
 738         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 739         if (!ioctlbuffer) {
 740                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 741                 return -ENOMEM;
 742         }
 743         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 744         while (sizeRead < pm8001_ha->fw_image->size) {
 745                 partitionSizeTmp =
 746                         *(__be32 *)((u8 *)&image_hdr->image_length + sizeRead);
 747                 partitionSize = be32_to_cpu(partitionSizeTmp);
 748                 loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
 749                                         IOCTL_BUF_SIZE);
 750                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 751                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 752                         payload->wr_length = 1024*16;
 753                         payload->id = 0;
 754                         fwControl =
 755                               (struct fw_control_info *)&payload->func_specific;
 756                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 757                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 758                         fwControl->retcode = 0;/* OUT */
 759                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 760
 761                         /*
 762                          * for the last chunk of data in case file size is
 763                          * not even with 4k, load only the rest
 764                          */
 765
 766                         read_buf  = (u8 *)pm8001_ha->fw_image->data + sizeRead;
 767                         fc_len = (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 768
 769                         if (loopcount - loopNumber == 1 && fc_len) {
 770                                 fwControl->len = fc_len;
 771                                 memcpy((u8 *)fwControl->buffer, read_buf, fc_len);
 772                                 sizeRead += fc_len;
 773                         } else {
 774                                 memcpy((u8 *)fwControl->buffer, read_buf, IOCTL_BUF_SIZE);
 775                                 sizeRead += IOCTL_BUF_SIZE;
 776                         }
 777
 778                         pm8001_ha->nvmd_completion = &completion;
 779                         ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 780                         if (ret) {
 781                                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 782                                 goto out;
 783                         }
 784                         wait_for_completion(&completion);
 785                         if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
 786                                 pm8001_ha->fw_status = fwControl->retcode;
 787                                 ret = -EFAULT;
 788                                 goto out;
 789                         }
 790                 }
 791         }
 792 out:
 793         kfree(ioctlbuffer);
 794         return ret;
 795 }
 796 static ssize_t pm8001_store_update_fw(struct device *cdev,
 797                                       struct device_attribute *attr,
 798                                       const char *buf, size_t count)
 799 {
 800         struct Scsi_Host *shost = class_to_shost(cdev);
 801         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 802         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 803         char *cmd_ptr, *filename_ptr;
 804         int res, i;
 805         int flash_command = FLASH_CMD_NONE;
 806         int ret;
 807
 808         if (!capable(CAP_SYS_ADMIN))
 809                 return -EACCES;
 810
 811         /* this test protects us from running two flash processes at once,
 812          * so we should start with this test */
 813         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
 814                 return -EINPROGRESS;
 815         pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 816
 817         cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
 818         if (!cmd_ptr) {
 819                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 820                 return -ENOMEM;
 821         }
 822
 823         filename_ptr = cmd_ptr + count;
 824         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 825         if (res != 2) {
 826                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 827                 ret = -EINVAL;
 828                 goto out;
 829         }
 830
 831         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 832                 if (!memcmp(flash_command_table[i].command,
 833                                  cmd_ptr, strlen(cmd_ptr))) {
 834                         flash_command = flash_command_table[i].code;
 835                         break;
 836                 }
 837         }
 838         if (flash_command == FLASH_CMD_NONE) {
 839                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 840                 ret = -EINVAL;
 841                 goto out;
 842         }
 843
 844         ret = request_firmware(&pm8001_ha->fw_image,
 845                                filename_ptr,
 846                                pm8001_ha->dev);
 847
 848         if (ret) {
 849                 pm8001_dbg(pm8001_ha, FAIL,
 850                            "Failed to load firmware image file %s, error %d\n",
 851                            filename_ptr, ret);
 852                 pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
 853                 goto out;
 854         }
 855
 856         if (FLASH_CMD_UPDATE == flash_command)
 857                 ret = pm8001_update_flash(pm8001_ha);
 858         else
 859                 ret = pm8001_set_nvmd(pm8001_ha);
 860
 861         release_firmware(pm8001_ha->fw_image);
 862 out:
 863         kfree(cmd_ptr);
 864
 865         if (ret)
 866                 return ret;
 867
 868         pm8001_ha->fw_status = FLASH_OK;
 869         return count;
 870 }
 871
 872 static ssize_t pm8001_show_update_fw(struct device *cdev,
 873                                      struct device_attribute *attr, char *buf)
 874 {
 875         int i;
 876         struct Scsi_Host *shost = class_to_shost(cdev);
 877         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 878         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 879
 880         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 881                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 882                         break;
 883         }
 884         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 885                 pm8001_ha->fw_status = FLASH_OK;
 886
 887         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 888                         flash_error_table[i].err_code,
 889                         flash_error_table[i].reason);
 890 }
 891 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 892         pm8001_show_update_fw, pm8001_store_update_fw);
 893
 894 static const char *const mpiStateText[] = {
 895         "MPI is not initialized",
 896         "MPI is successfully initialized",
 897         "MPI termination is in progress",
 898         "MPI initialization failed with error in [31:16]"
 899 };
 900
 901 /**
 902  * ctl_mpi_state_show - controller MPI state check
 903  * @cdev: pointer to embedded class device
 904  * @attr: device attribute (unused)
 905  * @buf: the buffer returned
 906  *
 907  * A sysfs 'read-only' shost attribute.
 908  */
 909 static ssize_t ctl_mpi_state_show(struct device *cdev,
 910                 struct device_attribute *attr, char *buf)
 911 {
 912         struct Scsi_Host *shost = class_to_shost(cdev);
 913         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 914         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 915         unsigned int mpidw0;
 916
 917         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 918         return sysfs_emit(buf, "%s\n", mpiStateText[mpidw0 & 0x0003]);
 919 }
 920 static DEVICE_ATTR_RO(ctl_mpi_state);
 921
 922 /**
 923  * ctl_hmi_error_show - controller MPI initialization fails
 924  * @cdev: pointer to embedded class device
 925  * @attr: device attribute (unused)
 926  * @buf: the buffer returned
 927  *
 928  * A sysfs 'read-only' shost attribute.
 929  */
 930 static ssize_t ctl_hmi_error_show(struct device *cdev,
 931                 struct device_attribute *attr, char *buf)
 932 {
 933         struct Scsi_Host *shost = class_to_shost(cdev);
 934         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 935         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 936         unsigned int mpidw0;
 937
 938         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 939         return sysfs_emit(buf, "0x%08x\n", (mpidw0 >> 16));
 940 }
 941 static DEVICE_ATTR_RO(ctl_hmi_error);
 942
 943 /**
 944  * ctl_raae_count_show - controller raae count check
 945  * @cdev: pointer to embedded class device
 946  * @attr: device attribute (unused)
 947  * @buf: the buffer returned
 948  *
 949  * A sysfs 'read-only' shost attribute.
 950  */
 951 static ssize_t ctl_raae_count_show(struct device *cdev,
 952                 struct device_attribute *attr, char *buf)
 953 {
 954         struct Scsi_Host *shost = class_to_shost(cdev);
 955         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 956         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 957         unsigned int raaecnt;
 958
 959         raaecnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 12);
 960         return sysfs_emit(buf, "0x%08x\n", raaecnt);
 961 }
 962 static DEVICE_ATTR_RO(ctl_raae_count);
 963
 964 /**
 965  * ctl_iop0_count_show - controller iop0 count check
 966  * @cdev: pointer to embedded class device
 967  * @attr: device attribute (unused)
 968  * @buf: the buffer returned
 969  *
 970  * A sysfs 'read-only' shost attribute.
 971  */
 972 static ssize_t ctl_iop0_count_show(struct device *cdev,
 973                 struct device_attribute *attr, char *buf)
 974 {
 975         struct Scsi_Host *shost = class_to_shost(cdev);
 976         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 977         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 978         unsigned int iop0cnt;
 979
 980         iop0cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 16);
 981         return sysfs_emit(buf, "0x%08x\n", iop0cnt);
 982 }
 983 static DEVICE_ATTR_RO(ctl_iop0_count);
 984
 985 /**
 986  * ctl_iop1_count_show - controller iop1 count check
 987  * @cdev: pointer to embedded class device
 988  * @attr: device attribute (unused)
 989  * @buf: the buffer returned
 990  *
 991  * A sysfs 'read-only' shost attribute.
 992  */
 993 static ssize_t ctl_iop1_count_show(struct device *cdev,
 994                 struct device_attribute *attr, char *buf)
 995 {
 996         struct Scsi_Host *shost = class_to_shost(cdev);
 997         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 998         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 999         unsigned int iop1cnt;
1000
1001         iop1cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 20);
1002         return sysfs_emit(buf, "0x%08x\n", iop1cnt);
1003
1004 }
1005 static DEVICE_ATTR_RO(ctl_iop1_count);
1006
1007 static struct attribute *pm8001_host_attrs[] = {
1008         &dev_attr_interface_rev.attr,
1009         &dev_attr_controller_fatal_error.attr,
1010         &dev_attr_fw_version.attr,
1011         &dev_attr_update_fw.attr,
1012         &dev_attr_aap_log.attr,
1013         &dev_attr_iop_log.attr,
1014         &dev_attr_fatal_log.attr,
1015         &dev_attr_non_fatal_log.attr,
1016         &dev_attr_non_fatal_count.attr,
1017         &dev_attr_gsm_log.attr,
1018         &dev_attr_max_out_io.attr,
1019         &dev_attr_max_devices.attr,
1020         &dev_attr_max_sg_list.attr,
1021         &dev_attr_sas_spec_support.attr,
1022         &dev_attr_logging_level.attr,
1023         &dev_attr_event_log_size.attr,
1024         &dev_attr_host_sas_address.attr,
1025         &dev_attr_bios_version.attr,
1026         &dev_attr_ib_log.attr,
1027         &dev_attr_ob_log.attr,
1028         &dev_attr_ila_version.attr,
1029         &dev_attr_inc_fw_ver.attr,
1030         &dev_attr_ctl_mpi_state.attr,
1031         &dev_attr_ctl_hmi_error.attr,
1032         &dev_attr_ctl_raae_count.attr,
1033         &dev_attr_ctl_iop0_count.attr,
1034         &dev_attr_ctl_iop1_count.attr,
1035         NULL,
1036 };
1037
1038 static const struct attribute_group pm8001_host_attr_group = {
1039         .attrs = pm8001_host_attrs
1040 };
1041
1042 const struct attribute_group *pm8001_host_groups[] = {
1043         &pm8001_host_attr_group,
1044         NULL
1045 };