1 /* 2 * linux/drivers/scsi/esas2r/esas2r_main.c 3 * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers 4 * 5 * Copyright (c) 2001-2013 ATTO Technology, Inc. 6 * (mailto:linuxdrivers@attotech.com) 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * as published by the Free Software Foundation; either version 2 11 * of the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * NO WARRANTY 19 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 20 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 21 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 22 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 23 * solely responsible for determining the appropriateness of using and 24 * distributing the Program and assumes all risks associated with its 25 * exercise of rights under this Agreement, including but not limited to 26 * the risks and costs of program errors, damage to or loss of data, 27 * programs or equipment, and unavailability or interruption of operations. 28 * 29 * DISCLAIMER OF LIABILITY 30 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 31 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 33 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 34 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 35 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 36 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 37 * 38 * You should have received a copy of the GNU General Public License 39 * along with this program; if not, write to the Free Software 40 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 41 * USA. 42 */ 43 44 #include "esas2r.h" 45 46 MODULE_DESCRIPTION(ESAS2R_DRVR_NAME ": " ESAS2R_LONGNAME " driver"); 47 MODULE_AUTHOR("ATTO Technology, Inc."); 48 MODULE_LICENSE("GPL"); 49 MODULE_VERSION(ESAS2R_VERSION_STR); 50 51 /* global definitions */ 52 53 static int found_adapters; 54 struct esas2r_adapter *esas2r_adapters[MAX_ADAPTERS]; 55 56 #define ESAS2R_VDA_EVENT_PORT1 54414 57 #define ESAS2R_VDA_EVENT_PORT2 54415 58 #define ESAS2R_VDA_EVENT_SOCK_COUNT 2 59 esas2r_adapter_from_kobj(struct kobject * kobj)60 static struct esas2r_adapter *esas2r_adapter_from_kobj(struct kobject *kobj) 61 { 62 struct device *dev = container_of(kobj, struct device, kobj); 63 struct Scsi_Host *host = class_to_shost(dev); 64 65 return (struct esas2r_adapter *)host->hostdata; 66 } 67 read_fw(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)68 static ssize_t read_fw(struct file *file, struct kobject *kobj, 69 struct bin_attribute *attr, 70 char *buf, loff_t off, size_t count) 71 { 72 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 73 74 return esas2r_read_fw(a, buf, off, count); 75 } 76 write_fw(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)77 static ssize_t write_fw(struct file *file, struct kobject *kobj, 78 struct bin_attribute *attr, 79 char *buf, loff_t off, size_t count) 80 { 81 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 82 83 return esas2r_write_fw(a, buf, off, count); 84 } 85 read_fs(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)86 static ssize_t read_fs(struct file *file, struct kobject *kobj, 87 struct bin_attribute *attr, 88 char *buf, loff_t off, size_t count) 89 { 90 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 91 92 return esas2r_read_fs(a, buf, off, count); 93 } 94 write_fs(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)95 static ssize_t write_fs(struct file *file, struct kobject *kobj, 96 struct bin_attribute *attr, 97 char *buf, loff_t off, size_t count) 98 { 99 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 100 int length = min(sizeof(struct esas2r_ioctl_fs), count); 101 int result = 0; 102 103 result = esas2r_write_fs(a, buf, off, count); 104 105 if (result < 0) 106 result = 0; 107 108 return length; 109 } 110 read_vda(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)111 static ssize_t read_vda(struct file *file, struct kobject *kobj, 112 struct bin_attribute *attr, 113 char *buf, loff_t off, size_t count) 114 { 115 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 116 117 return esas2r_read_vda(a, buf, off, count); 118 } 119 write_vda(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)120 static ssize_t write_vda(struct file *file, struct kobject *kobj, 121 struct bin_attribute *attr, 122 char *buf, loff_t off, size_t count) 123 { 124 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 125 126 return esas2r_write_vda(a, buf, off, count); 127 } 128 read_live_nvram(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)129 static ssize_t read_live_nvram(struct file *file, struct kobject *kobj, 130 struct bin_attribute *attr, 131 char *buf, loff_t off, size_t count) 132 { 133 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 134 int length = min_t(size_t, sizeof(struct esas2r_sas_nvram), PAGE_SIZE); 135 136 memcpy(buf, a->nvram, length); 137 return length; 138 } 139 write_live_nvram(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)140 static ssize_t write_live_nvram(struct file *file, struct kobject *kobj, 141 struct bin_attribute *attr, 142 char *buf, loff_t off, size_t count) 143 { 144 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 145 struct esas2r_request *rq; 146 int result = -EFAULT; 147 148 rq = esas2r_alloc_request(a); 149 if (rq == NULL) 150 return -ENOMEM; 151 152 if (esas2r_write_params(a, rq, (struct esas2r_sas_nvram *)buf)) 153 result = count; 154 155 esas2r_free_request(a, rq); 156 157 return result; 158 } 159 read_default_nvram(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)160 static ssize_t read_default_nvram(struct file *file, struct kobject *kobj, 161 struct bin_attribute *attr, 162 char *buf, loff_t off, size_t count) 163 { 164 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 165 166 esas2r_nvram_get_defaults(a, (struct esas2r_sas_nvram *)buf); 167 168 return sizeof(struct esas2r_sas_nvram); 169 } 170 read_hw(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)171 static ssize_t read_hw(struct file *file, struct kobject *kobj, 172 struct bin_attribute *attr, 173 char *buf, loff_t off, size_t count) 174 { 175 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 176 int length = min_t(size_t, sizeof(struct atto_ioctl), PAGE_SIZE); 177 178 if (!a->local_atto_ioctl) 179 return -ENOMEM; 180 181 if (handle_hba_ioctl(a, a->local_atto_ioctl) != IOCTL_SUCCESS) 182 return -ENOMEM; 183 184 memcpy(buf, a->local_atto_ioctl, length); 185 186 return length; 187 } 188 write_hw(struct file * file,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)189 static ssize_t write_hw(struct file *file, struct kobject *kobj, 190 struct bin_attribute *attr, 191 char *buf, loff_t off, size_t count) 192 { 193 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 194 int length = min(sizeof(struct atto_ioctl), count); 195 196 if (!a->local_atto_ioctl) { 197 a->local_atto_ioctl = kmalloc(sizeof(struct atto_ioctl), 198 GFP_KERNEL); 199 if (a->local_atto_ioctl == NULL) { 200 esas2r_log(ESAS2R_LOG_WARN, 201 "write_hw kzalloc failed for %zu bytes", 202 sizeof(struct atto_ioctl)); 203 return -ENOMEM; 204 } 205 } 206 207 memset(a->local_atto_ioctl, 0, sizeof(struct atto_ioctl)); 208 memcpy(a->local_atto_ioctl, buf, length); 209 210 return length; 211 } 212 213 #define ESAS2R_RW_BIN_ATTR(_name) \ 214 struct bin_attribute bin_attr_ ## _name = { \ 215 .attr = \ 216 { .name = __stringify(_name), .mode = S_IRUSR | S_IWUSR }, \ 217 .size = 0, \ 218 .read = read_ ## _name, \ 219 .write = write_ ## _name } 220 221 ESAS2R_RW_BIN_ATTR(fw); 222 ESAS2R_RW_BIN_ATTR(fs); 223 ESAS2R_RW_BIN_ATTR(vda); 224 ESAS2R_RW_BIN_ATTR(hw); 225 ESAS2R_RW_BIN_ATTR(live_nvram); 226 227 struct bin_attribute bin_attr_default_nvram = { 228 .attr = { .name = "default_nvram", .mode = S_IRUGO }, 229 .size = 0, 230 .read = read_default_nvram, 231 .write = NULL 232 }; 233 234 static const struct scsi_host_template driver_template = { 235 .module = THIS_MODULE, 236 .show_info = esas2r_show_info, 237 .name = ESAS2R_LONGNAME, 238 .info = esas2r_info, 239 .ioctl = esas2r_ioctl, 240 .queuecommand = esas2r_queuecommand, 241 .eh_abort_handler = esas2r_eh_abort, 242 .eh_device_reset_handler = esas2r_device_reset, 243 .eh_bus_reset_handler = esas2r_bus_reset, 244 .eh_host_reset_handler = esas2r_host_reset, 245 .eh_target_reset_handler = esas2r_target_reset, 246 .can_queue = 128, 247 .this_id = -1, 248 .sg_tablesize = SG_CHUNK_SIZE, 249 .cmd_per_lun = 250 ESAS2R_DEFAULT_CMD_PER_LUN, 251 .proc_name = ESAS2R_DRVR_NAME, 252 .change_queue_depth = scsi_change_queue_depth, 253 .max_sectors = 0xFFFF, 254 }; 255 256 int sgl_page_size = 512; 257 module_param(sgl_page_size, int, 0); 258 MODULE_PARM_DESC(sgl_page_size, 259 "Scatter/gather list (SGL) page size in number of S/G " 260 "entries. If your application is doing a lot of very large " 261 "transfers, you may want to increase the SGL page size. " 262 "Default 512."); 263 264 int num_sg_lists = 1024; 265 module_param(num_sg_lists, int, 0); 266 MODULE_PARM_DESC(num_sg_lists, 267 "Number of scatter/gather lists. Default 1024."); 268 269 int sg_tablesize = SG_CHUNK_SIZE; 270 module_param(sg_tablesize, int, 0); 271 MODULE_PARM_DESC(sg_tablesize, 272 "Maximum number of entries in a scatter/gather table."); 273 274 int num_requests = 256; 275 module_param(num_requests, int, 0); 276 MODULE_PARM_DESC(num_requests, 277 "Number of requests. Default 256."); 278 279 int num_ae_requests = 4; 280 module_param(num_ae_requests, int, 0); 281 MODULE_PARM_DESC(num_ae_requests, 282 "Number of VDA asynchronous event requests. Default 4."); 283 284 int cmd_per_lun = ESAS2R_DEFAULT_CMD_PER_LUN; 285 module_param(cmd_per_lun, int, 0); 286 MODULE_PARM_DESC(cmd_per_lun, 287 "Maximum number of commands per LUN. Default " 288 DEFINED_NUM_TO_STR(ESAS2R_DEFAULT_CMD_PER_LUN) "."); 289 290 int can_queue = 128; 291 module_param(can_queue, int, 0); 292 MODULE_PARM_DESC(can_queue, 293 "Maximum number of commands per adapter. Default 128."); 294 295 int esas2r_max_sectors = 0xFFFF; 296 module_param(esas2r_max_sectors, int, 0); 297 MODULE_PARM_DESC(esas2r_max_sectors, 298 "Maximum number of disk sectors in a single data transfer. " 299 "Default 65535 (largest possible setting)."); 300 301 int interrupt_mode = 1; 302 module_param(interrupt_mode, int, 0); 303 MODULE_PARM_DESC(interrupt_mode, 304 "Defines the interrupt mode to use. 0 for legacy" 305 ", 1 for MSI. Default is MSI (1)."); 306 307 static const struct pci_device_id 308 esas2r_pci_table[] = { 309 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x0049, 310 0, 311 0, 0 }, 312 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004A, 313 0, 314 0, 0 }, 315 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004B, 316 0, 317 0, 0 }, 318 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004C, 319 0, 320 0, 0 }, 321 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004D, 322 0, 323 0, 0 }, 324 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004E, 325 0, 326 0, 0 }, 327 { 0, 0, 0, 0, 328 0, 329 0, 0 } 330 }; 331 332 MODULE_DEVICE_TABLE(pci, esas2r_pci_table); 333 334 static int 335 esas2r_probe(struct pci_dev *pcid, const struct pci_device_id *id); 336 337 static void 338 esas2r_remove(struct pci_dev *pcid); 339 340 static struct pci_driver 341 esas2r_pci_driver = { 342 .name = ESAS2R_DRVR_NAME, 343 .id_table = esas2r_pci_table, 344 .probe = esas2r_probe, 345 .remove = esas2r_remove, 346 .driver.pm = &esas2r_pm_ops, 347 }; 348 esas2r_probe(struct pci_dev * pcid,const struct pci_device_id * id)349 static int esas2r_probe(struct pci_dev *pcid, 350 const struct pci_device_id *id) 351 { 352 struct Scsi_Host *host = NULL; 353 struct esas2r_adapter *a; 354 int err; 355 356 size_t host_alloc_size = sizeof(struct esas2r_adapter) 357 + ((num_requests) + 358 1) * sizeof(struct esas2r_request); 359 360 esas2r_log_dev(ESAS2R_LOG_DEBG, &(pcid->dev), 361 "esas2r_probe() 0x%02x 0x%02x 0x%02x 0x%02x", 362 pcid->vendor, 363 pcid->device, 364 pcid->subsystem_vendor, 365 pcid->subsystem_device); 366 367 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), 368 "before pci_enable_device() " 369 "enable_cnt: %d", 370 pcid->enable_cnt.counter); 371 372 err = pci_enable_device(pcid); 373 if (err != 0) { 374 esas2r_log_dev(ESAS2R_LOG_CRIT, &(pcid->dev), 375 "pci_enable_device() FAIL (%d)", 376 err); 377 return -ENODEV; 378 } 379 380 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), 381 "pci_enable_device() OK"); 382 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), 383 "after pci_enable_device() enable_cnt: %d", 384 pcid->enable_cnt.counter); 385 386 host = scsi_host_alloc(&driver_template, host_alloc_size); 387 if (host == NULL) { 388 esas2r_log(ESAS2R_LOG_CRIT, "scsi_host_alloc() FAIL"); 389 return -ENODEV; 390 } 391 392 memset(host->hostdata, 0, host_alloc_size); 393 394 a = (struct esas2r_adapter *)host->hostdata; 395 396 esas2r_log(ESAS2R_LOG_INFO, "scsi_host_alloc() OK host: %p", host); 397 398 /* override max LUN and max target id */ 399 400 host->max_id = ESAS2R_MAX_ID + 1; 401 host->max_lun = 255; 402 403 /* we can handle 16-byte CDbs */ 404 405 host->max_cmd_len = 16; 406 407 host->can_queue = can_queue; 408 host->cmd_per_lun = cmd_per_lun; 409 host->this_id = host->max_id + 1; 410 host->max_channel = 0; 411 host->unique_id = found_adapters; 412 host->sg_tablesize = sg_tablesize; 413 host->max_sectors = esas2r_max_sectors; 414 415 /* set to bus master for BIOses that don't do it for us */ 416 417 esas2r_log(ESAS2R_LOG_INFO, "pci_set_master() called"); 418 419 pci_set_master(pcid); 420 421 if (!esas2r_init_adapter(host, pcid, found_adapters)) { 422 esas2r_log(ESAS2R_LOG_CRIT, 423 "unable to initialize device at PCI bus %x:%x", 424 pcid->bus->number, 425 pcid->devfn); 426 427 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 428 "scsi_host_put() called"); 429 430 scsi_host_put(host); 431 432 return 0; 433 434 } 435 436 esas2r_log(ESAS2R_LOG_INFO, "pci_set_drvdata(%p, %p) called", pcid, 437 host->hostdata); 438 439 pci_set_drvdata(pcid, host); 440 441 esas2r_log(ESAS2R_LOG_INFO, "scsi_add_host() called"); 442 443 err = scsi_add_host(host, &pcid->dev); 444 445 if (err) { 446 esas2r_log(ESAS2R_LOG_CRIT, "scsi_add_host returned %d", err); 447 esas2r_log_dev(ESAS2R_LOG_CRIT, &(host->shost_gendev), 448 "scsi_add_host() FAIL"); 449 450 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 451 "scsi_host_put() called"); 452 453 scsi_host_put(host); 454 455 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 456 "pci_set_drvdata(%p, NULL) called", 457 pcid); 458 459 pci_set_drvdata(pcid, NULL); 460 461 return -ENODEV; 462 } 463 464 465 esas2r_fw_event_on(a); 466 467 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 468 "scsi_scan_host() called"); 469 470 scsi_scan_host(host); 471 472 /* Add sysfs binary files */ 473 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fw)) 474 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 475 "Failed to create sysfs binary file: fw"); 476 else 477 a->sysfs_fw_created = 1; 478 479 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fs)) 480 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 481 "Failed to create sysfs binary file: fs"); 482 else 483 a->sysfs_fs_created = 1; 484 485 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_vda)) 486 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 487 "Failed to create sysfs binary file: vda"); 488 else 489 a->sysfs_vda_created = 1; 490 491 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_hw)) 492 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 493 "Failed to create sysfs binary file: hw"); 494 else 495 a->sysfs_hw_created = 1; 496 497 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_live_nvram)) 498 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 499 "Failed to create sysfs binary file: live_nvram"); 500 else 501 a->sysfs_live_nvram_created = 1; 502 503 if (sysfs_create_bin_file(&host->shost_dev.kobj, 504 &bin_attr_default_nvram)) 505 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 506 "Failed to create sysfs binary file: default_nvram"); 507 else 508 a->sysfs_default_nvram_created = 1; 509 510 found_adapters++; 511 512 return 0; 513 } 514 esas2r_remove(struct pci_dev * pdev)515 static void esas2r_remove(struct pci_dev *pdev) 516 { 517 struct Scsi_Host *host = pci_get_drvdata(pdev); 518 struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; 519 520 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 521 "esas2r_remove(%p) called; " 522 "host:%p", pdev, 523 host); 524 525 esas2r_kill_adapter(a->index); 526 found_adapters--; 527 } 528 esas2r_init(void)529 static int __init esas2r_init(void) 530 { 531 int i; 532 533 esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); 534 535 /* verify valid parameters */ 536 537 if (can_queue < 1) { 538 esas2r_log(ESAS2R_LOG_WARN, 539 "warning: can_queue must be at least 1, value " 540 "forced."); 541 can_queue = 1; 542 } else if (can_queue > 2048) { 543 esas2r_log(ESAS2R_LOG_WARN, 544 "warning: can_queue must be no larger than 2048, " 545 "value forced."); 546 can_queue = 2048; 547 } 548 549 if (cmd_per_lun < 1) { 550 esas2r_log(ESAS2R_LOG_WARN, 551 "warning: cmd_per_lun must be at least 1, value " 552 "forced."); 553 cmd_per_lun = 1; 554 } else if (cmd_per_lun > 2048) { 555 esas2r_log(ESAS2R_LOG_WARN, 556 "warning: cmd_per_lun must be no larger than " 557 "2048, value forced."); 558 cmd_per_lun = 2048; 559 } 560 561 if (sg_tablesize < 32) { 562 esas2r_log(ESAS2R_LOG_WARN, 563 "warning: sg_tablesize must be at least 32, " 564 "value forced."); 565 sg_tablesize = 32; 566 } 567 568 if (esas2r_max_sectors < 1) { 569 esas2r_log(ESAS2R_LOG_WARN, 570 "warning: esas2r_max_sectors must be at least " 571 "1, value forced."); 572 esas2r_max_sectors = 1; 573 } else if (esas2r_max_sectors > 0xffff) { 574 esas2r_log(ESAS2R_LOG_WARN, 575 "warning: esas2r_max_sectors must be no larger " 576 "than 0xffff, value forced."); 577 esas2r_max_sectors = 0xffff; 578 } 579 580 sgl_page_size &= ~(ESAS2R_SGL_ALIGN - 1); 581 582 if (sgl_page_size < SGL_PG_SZ_MIN) 583 sgl_page_size = SGL_PG_SZ_MIN; 584 else if (sgl_page_size > SGL_PG_SZ_MAX) 585 sgl_page_size = SGL_PG_SZ_MAX; 586 587 if (num_sg_lists < NUM_SGL_MIN) 588 num_sg_lists = NUM_SGL_MIN; 589 else if (num_sg_lists > NUM_SGL_MAX) 590 num_sg_lists = NUM_SGL_MAX; 591 592 if (num_requests < NUM_REQ_MIN) 593 num_requests = NUM_REQ_MIN; 594 else if (num_requests > NUM_REQ_MAX) 595 num_requests = NUM_REQ_MAX; 596 597 if (num_ae_requests < NUM_AE_MIN) 598 num_ae_requests = NUM_AE_MIN; 599 else if (num_ae_requests > NUM_AE_MAX) 600 num_ae_requests = NUM_AE_MAX; 601 602 /* set up other globals */ 603 604 for (i = 0; i < MAX_ADAPTERS; i++) 605 esas2r_adapters[i] = NULL; 606 607 return pci_register_driver(&esas2r_pci_driver); 608 } 609 610 /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */ 611 static const struct file_operations esas2r_proc_fops = { 612 .compat_ioctl = compat_ptr_ioctl, 613 .unlocked_ioctl = esas2r_proc_ioctl, 614 }; 615 616 static const struct proc_ops esas2r_proc_ops = { 617 .proc_lseek = default_llseek, 618 .proc_ioctl = esas2r_proc_ioctl, 619 #ifdef CONFIG_COMPAT 620 .proc_compat_ioctl = compat_ptr_ioctl, 621 #endif 622 }; 623 624 static struct Scsi_Host *esas2r_proc_host; 625 static int esas2r_proc_major; 626 esas2r_proc_ioctl(struct file * fp,unsigned int cmd,unsigned long arg)627 long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) 628 { 629 return esas2r_ioctl_handler(esas2r_proc_host->hostdata, 630 cmd, (void __user *)arg); 631 } 632 esas2r_exit(void)633 static void __exit esas2r_exit(void) 634 { 635 esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); 636 637 if (esas2r_proc_major > 0) { 638 struct proc_dir_entry *proc_dir; 639 640 esas2r_log(ESAS2R_LOG_INFO, "unregister proc"); 641 642 proc_dir = scsi_template_proc_dir(esas2r_proc_host->hostt); 643 if (proc_dir) 644 remove_proc_entry(ATTONODE_NAME, proc_dir); 645 unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME); 646 647 esas2r_proc_major = 0; 648 } 649 650 esas2r_log(ESAS2R_LOG_INFO, "pci_unregister_driver() called"); 651 652 pci_unregister_driver(&esas2r_pci_driver); 653 } 654 esas2r_show_info(struct seq_file * m,struct Scsi_Host * sh)655 int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh) 656 { 657 struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; 658 659 struct esas2r_target *t; 660 int dev_count = 0; 661 662 esas2r_log(ESAS2R_LOG_DEBG, "esas2r_show_info (%p,%d)", m, sh->host_no); 663 664 seq_printf(m, ESAS2R_LONGNAME "\n" 665 "Driver version: "ESAS2R_VERSION_STR "\n" 666 "Flash version: %s\n" 667 "Firmware version: %s\n" 668 "Copyright "ESAS2R_COPYRIGHT_YEARS "\n" 669 "http://www.attotech.com\n" 670 "\n", 671 a->flash_rev, 672 a->fw_rev[0] ? a->fw_rev : "(none)"); 673 674 675 seq_printf(m, "Adapter information:\n" 676 "--------------------\n" 677 "Model: %s\n" 678 "SAS address: %02X%02X%02X%02X:%02X%02X%02X%02X\n", 679 esas2r_get_model_name(a), 680 a->nvram->sas_addr[0], 681 a->nvram->sas_addr[1], 682 a->nvram->sas_addr[2], 683 a->nvram->sas_addr[3], 684 a->nvram->sas_addr[4], 685 a->nvram->sas_addr[5], 686 a->nvram->sas_addr[6], 687 a->nvram->sas_addr[7]); 688 689 seq_puts(m, "\n" 690 "Discovered devices:\n" 691 "\n" 692 " # Target ID\n" 693 "---------------\n"); 694 695 for (t = a->targetdb; t < a->targetdb_end; t++) 696 if (t->buffered_target_state == TS_PRESENT) { 697 seq_printf(m, " %3d %3d\n", 698 ++dev_count, 699 (u16)(uintptr_t)(t - a->targetdb)); 700 } 701 702 if (dev_count == 0) 703 seq_puts(m, "none\n"); 704 705 seq_putc(m, '\n'); 706 return 0; 707 708 } 709 esas2r_info(struct Scsi_Host * sh)710 const char *esas2r_info(struct Scsi_Host *sh) 711 { 712 struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; 713 static char esas2r_info_str[512]; 714 715 esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), 716 "esas2r_info() called"); 717 718 /* 719 * if we haven't done so already, register as a char driver 720 * and stick a node under "/proc/scsi/esas2r/ATTOnode" 721 */ 722 723 if (esas2r_proc_major <= 0) { 724 esas2r_proc_host = sh; 725 726 esas2r_proc_major = register_chrdev(0, ESAS2R_DRVR_NAME, 727 &esas2r_proc_fops); 728 729 esas2r_log_dev(ESAS2R_LOG_DEBG, &(sh->shost_gendev), 730 "register_chrdev (major %d)", 731 esas2r_proc_major); 732 733 if (esas2r_proc_major > 0) { 734 struct proc_dir_entry *proc_dir; 735 struct proc_dir_entry *pde = NULL; 736 737 proc_dir = scsi_template_proc_dir(sh->hostt); 738 if (proc_dir) 739 pde = proc_create(ATTONODE_NAME, 0, proc_dir, 740 &esas2r_proc_ops); 741 742 if (!pde) { 743 esas2r_log_dev(ESAS2R_LOG_WARN, 744 &(sh->shost_gendev), 745 "failed to create_proc_entry"); 746 esas2r_proc_major = -1; 747 } 748 } 749 } 750 751 sprintf(esas2r_info_str, 752 ESAS2R_LONGNAME " (bus 0x%02X, device 0x%02X, IRQ 0x%02X)" 753 " driver version: "ESAS2R_VERSION_STR " firmware version: " 754 "%s\n", 755 a->pcid->bus->number, a->pcid->devfn, a->pcid->irq, 756 a->fw_rev[0] ? a->fw_rev : "(none)"); 757 758 return esas2r_info_str; 759 } 760 761 /* Callback for building a request scatter/gather list */ get_physaddr_from_sgc(struct esas2r_sg_context * sgc,u64 * addr)762 static u32 get_physaddr_from_sgc(struct esas2r_sg_context *sgc, u64 *addr) 763 { 764 u32 len; 765 766 if (likely(sgc->cur_offset == sgc->exp_offset)) { 767 /* 768 * the normal case: caller used all bytes from previous call, so 769 * expected offset is the same as the current offset. 770 */ 771 772 if (sgc->sgel_count < sgc->num_sgel) { 773 /* retrieve next segment, except for first time */ 774 if (sgc->exp_offset > (u8 *)0) { 775 /* advance current segment */ 776 sgc->cur_sgel = sg_next(sgc->cur_sgel); 777 ++(sgc->sgel_count); 778 } 779 780 781 len = sg_dma_len(sgc->cur_sgel); 782 (*addr) = sg_dma_address(sgc->cur_sgel); 783 784 /* save the total # bytes returned to caller so far */ 785 sgc->exp_offset += len; 786 787 } else { 788 len = 0; 789 } 790 } else if (sgc->cur_offset < sgc->exp_offset) { 791 /* 792 * caller did not use all bytes from previous call. need to 793 * compute the address based on current segment. 794 */ 795 796 len = sg_dma_len(sgc->cur_sgel); 797 (*addr) = sg_dma_address(sgc->cur_sgel); 798 799 sgc->exp_offset -= len; 800 801 /* calculate PA based on prev segment address and offsets */ 802 *addr = *addr + 803 (sgc->cur_offset - sgc->exp_offset); 804 805 sgc->exp_offset += len; 806 807 /* re-calculate length based on offset */ 808 len = lower_32_bits( 809 sgc->exp_offset - sgc->cur_offset); 810 } else { /* if ( sgc->cur_offset > sgc->exp_offset ) */ 811 /* 812 * we don't expect the caller to skip ahead. 813 * cur_offset will never exceed the len we return 814 */ 815 len = 0; 816 } 817 818 return len; 819 } 820 esas2r_queuecommand(struct Scsi_Host * host,struct scsi_cmnd * cmd)821 int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) 822 { 823 struct esas2r_adapter *a = 824 (struct esas2r_adapter *)cmd->device->host->hostdata; 825 struct esas2r_request *rq; 826 struct esas2r_sg_context sgc; 827 unsigned bufflen; 828 829 /* Assume success, if it fails we will fix the result later. */ 830 cmd->result = DID_OK << 16; 831 832 if (unlikely(test_bit(AF_DEGRADED_MODE, &a->flags))) { 833 cmd->result = DID_NO_CONNECT << 16; 834 scsi_done(cmd); 835 return 0; 836 } 837 838 rq = esas2r_alloc_request(a); 839 if (unlikely(rq == NULL)) { 840 esas2r_debug("esas2r_alloc_request failed"); 841 return SCSI_MLQUEUE_HOST_BUSY; 842 } 843 844 rq->cmd = cmd; 845 bufflen = scsi_bufflen(cmd); 846 847 if (likely(bufflen != 0)) { 848 if (cmd->sc_data_direction == DMA_TO_DEVICE) 849 rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD); 850 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 851 rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD); 852 } 853 854 memcpy(rq->vrq->scsi.cdb, cmd->cmnd, cmd->cmd_len); 855 rq->vrq->scsi.length = cpu_to_le32(bufflen); 856 rq->target_id = cmd->device->id; 857 rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); 858 rq->sense_buf = cmd->sense_buffer; 859 rq->sense_len = SCSI_SENSE_BUFFERSIZE; 860 861 esas2r_sgc_init(&sgc, a, rq, NULL); 862 863 sgc.length = bufflen; 864 sgc.cur_offset = NULL; 865 866 sgc.cur_sgel = scsi_sglist(cmd); 867 sgc.exp_offset = NULL; 868 sgc.num_sgel = scsi_dma_map(cmd); 869 sgc.sgel_count = 0; 870 871 if (unlikely(sgc.num_sgel < 0)) { 872 esas2r_free_request(a, rq); 873 return SCSI_MLQUEUE_HOST_BUSY; 874 } 875 876 sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_from_sgc; 877 878 if (unlikely(!esas2r_build_sg_list(a, rq, &sgc))) { 879 scsi_dma_unmap(cmd); 880 esas2r_free_request(a, rq); 881 return SCSI_MLQUEUE_HOST_BUSY; 882 } 883 884 esas2r_debug("start request %p to %d:%d\n", rq, (int)cmd->device->id, 885 (int)cmd->device->lun); 886 887 esas2r_start_request(a, rq); 888 889 return 0; 890 } 891 complete_task_management_request(struct esas2r_adapter * a,struct esas2r_request * rq)892 static void complete_task_management_request(struct esas2r_adapter *a, 893 struct esas2r_request *rq) 894 { 895 (*rq->task_management_status_ptr) = rq->req_stat; 896 esas2r_free_request(a, rq); 897 } 898 899 /* 900 * Searches the specified queue for the specified queue for the command 901 * to abort. 902 * 903 * Return 0 on failure, 1 if command was not found, 2 if command was found 904 */ esas2r_check_active_queue(struct esas2r_adapter * a,struct esas2r_request ** abort_request,struct scsi_cmnd * cmd,struct list_head * queue)905 static int esas2r_check_active_queue(struct esas2r_adapter *a, 906 struct esas2r_request **abort_request, 907 struct scsi_cmnd *cmd, 908 struct list_head *queue) 909 { 910 bool found = false; 911 struct esas2r_request *ar = *abort_request; 912 struct esas2r_request *rq; 913 struct list_head *element, *next; 914 915 list_for_each_safe(element, next, queue) { 916 917 rq = list_entry(element, struct esas2r_request, req_list); 918 919 if (rq->cmd == cmd) { 920 921 /* Found the request. See what to do with it. */ 922 if (queue == &a->active_list) { 923 /* 924 * We are searching the active queue, which 925 * means that we need to send an abort request 926 * to the firmware. 927 */ 928 ar = esas2r_alloc_request(a); 929 if (ar == NULL) { 930 esas2r_log_dev(ESAS2R_LOG_WARN, 931 &(a->host->shost_gendev), 932 "unable to allocate an abort request for cmd %p", 933 cmd); 934 return 0; /* Failure */ 935 } 936 937 /* 938 * Task management request must be formatted 939 * with a lock held. 940 */ 941 ar->sense_len = 0; 942 ar->vrq->scsi.length = 0; 943 ar->target_id = rq->target_id; 944 ar->vrq->scsi.flags |= cpu_to_le32( 945 (u8)le32_to_cpu(rq->vrq->scsi.flags)); 946 947 memset(ar->vrq->scsi.cdb, 0, 948 sizeof(ar->vrq->scsi.cdb)); 949 950 ar->vrq->scsi.flags |= cpu_to_le32( 951 FCP_CMND_TRM); 952 ar->vrq->scsi.u.abort_handle = 953 rq->vrq->scsi.handle; 954 } else { 955 /* 956 * The request is pending but not active on 957 * the firmware. Just free it now and we'll 958 * report the successful abort below. 959 */ 960 list_del_init(&rq->req_list); 961 esas2r_free_request(a, rq); 962 } 963 964 found = true; 965 break; 966 } 967 968 } 969 970 if (!found) 971 return 1; /* Not found */ 972 973 return 2; /* found */ 974 975 976 } 977 esas2r_eh_abort(struct scsi_cmnd * cmd)978 int esas2r_eh_abort(struct scsi_cmnd *cmd) 979 { 980 struct esas2r_adapter *a = 981 (struct esas2r_adapter *)cmd->device->host->hostdata; 982 struct esas2r_request *abort_request = NULL; 983 unsigned long flags; 984 struct list_head *queue; 985 int result; 986 987 esas2r_log(ESAS2R_LOG_INFO, "eh_abort (%p)", cmd); 988 989 if (test_bit(AF_DEGRADED_MODE, &a->flags)) { 990 cmd->result = DID_ABORT << 16; 991 992 scsi_set_resid(cmd, 0); 993 994 scsi_done(cmd); 995 996 return SUCCESS; 997 } 998 999 spin_lock_irqsave(&a->queue_lock, flags); 1000 1001 /* 1002 * Run through the defer and active queues looking for the request 1003 * to abort. 1004 */ 1005 1006 queue = &a->defer_list; 1007 1008 check_active_queue: 1009 1010 result = esas2r_check_active_queue(a, &abort_request, cmd, queue); 1011 1012 if (!result) { 1013 spin_unlock_irqrestore(&a->queue_lock, flags); 1014 return FAILED; 1015 } else if (result == 2 && (queue == &a->defer_list)) { 1016 queue = &a->active_list; 1017 goto check_active_queue; 1018 } 1019 1020 spin_unlock_irqrestore(&a->queue_lock, flags); 1021 1022 if (abort_request) { 1023 u8 task_management_status = RS_PENDING; 1024 1025 /* 1026 * the request is already active, so we need to tell 1027 * the firmware to abort it and wait for the response. 1028 */ 1029 1030 abort_request->comp_cb = complete_task_management_request; 1031 abort_request->task_management_status_ptr = 1032 &task_management_status; 1033 1034 esas2r_start_request(a, abort_request); 1035 1036 if (atomic_read(&a->disable_cnt) == 0) 1037 esas2r_do_deferred_processes(a); 1038 1039 while (task_management_status == RS_PENDING) 1040 msleep(10); 1041 1042 /* 1043 * Once we get here, the original request will have been 1044 * completed by the firmware and the abort request will have 1045 * been cleaned up. we're done! 1046 */ 1047 1048 return SUCCESS; 1049 } 1050 1051 /* 1052 * If we get here, either we found the inactive request and 1053 * freed it, or we didn't find it at all. Either way, success! 1054 */ 1055 1056 cmd->result = DID_ABORT << 16; 1057 1058 scsi_set_resid(cmd, 0); 1059 1060 scsi_done(cmd); 1061 1062 return SUCCESS; 1063 } 1064 esas2r_host_bus_reset(struct scsi_cmnd * cmd,bool host_reset)1065 static int esas2r_host_bus_reset(struct scsi_cmnd *cmd, bool host_reset) 1066 { 1067 struct esas2r_adapter *a = 1068 (struct esas2r_adapter *)cmd->device->host->hostdata; 1069 1070 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1071 return FAILED; 1072 1073 if (host_reset) 1074 esas2r_reset_adapter(a); 1075 else 1076 esas2r_reset_bus(a); 1077 1078 /* above call sets the AF_OS_RESET flag. wait for it to clear. */ 1079 1080 while (test_bit(AF_OS_RESET, &a->flags)) { 1081 msleep(10); 1082 1083 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1084 return FAILED; 1085 } 1086 1087 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1088 return FAILED; 1089 1090 return SUCCESS; 1091 } 1092 esas2r_host_reset(struct scsi_cmnd * cmd)1093 int esas2r_host_reset(struct scsi_cmnd *cmd) 1094 { 1095 esas2r_log(ESAS2R_LOG_INFO, "host_reset (%p)", cmd); 1096 1097 return esas2r_host_bus_reset(cmd, true); 1098 } 1099 esas2r_bus_reset(struct scsi_cmnd * cmd)1100 int esas2r_bus_reset(struct scsi_cmnd *cmd) 1101 { 1102 esas2r_log(ESAS2R_LOG_INFO, "bus_reset (%p)", cmd); 1103 1104 return esas2r_host_bus_reset(cmd, false); 1105 } 1106 esas2r_dev_targ_reset(struct scsi_cmnd * cmd,bool target_reset)1107 static int esas2r_dev_targ_reset(struct scsi_cmnd *cmd, bool target_reset) 1108 { 1109 struct esas2r_adapter *a = 1110 (struct esas2r_adapter *)cmd->device->host->hostdata; 1111 struct esas2r_request *rq; 1112 u8 task_management_status = RS_PENDING; 1113 bool completed; 1114 1115 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1116 return FAILED; 1117 1118 retry: 1119 rq = esas2r_alloc_request(a); 1120 if (rq == NULL) { 1121 if (target_reset) { 1122 esas2r_log(ESAS2R_LOG_CRIT, 1123 "unable to allocate a request for a " 1124 "target reset (%d)!", 1125 cmd->device->id); 1126 } else { 1127 esas2r_log(ESAS2R_LOG_CRIT, 1128 "unable to allocate a request for a " 1129 "device reset (%d:%llu)!", 1130 cmd->device->id, 1131 cmd->device->lun); 1132 } 1133 1134 1135 return FAILED; 1136 } 1137 1138 rq->target_id = cmd->device->id; 1139 rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); 1140 rq->req_stat = RS_PENDING; 1141 1142 rq->comp_cb = complete_task_management_request; 1143 rq->task_management_status_ptr = &task_management_status; 1144 1145 if (target_reset) { 1146 esas2r_debug("issuing target reset (%p) to id %d", rq, 1147 cmd->device->id); 1148 completed = esas2r_send_task_mgmt(a, rq, 0x20); 1149 } else { 1150 esas2r_debug("issuing device reset (%p) to id %d lun %d", rq, 1151 cmd->device->id, cmd->device->lun); 1152 completed = esas2r_send_task_mgmt(a, rq, 0x10); 1153 } 1154 1155 if (completed) { 1156 /* Task management cmd completed right away, need to free it. */ 1157 1158 esas2r_free_request(a, rq); 1159 } else { 1160 /* 1161 * Wait for firmware to complete the request. Completion 1162 * callback will free it. 1163 */ 1164 while (task_management_status == RS_PENDING) 1165 msleep(10); 1166 } 1167 1168 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1169 return FAILED; 1170 1171 if (task_management_status == RS_BUSY) { 1172 /* 1173 * Busy, probably because we are flashing. Wait a bit and 1174 * try again. 1175 */ 1176 msleep(100); 1177 goto retry; 1178 } 1179 1180 return SUCCESS; 1181 } 1182 esas2r_device_reset(struct scsi_cmnd * cmd)1183 int esas2r_device_reset(struct scsi_cmnd *cmd) 1184 { 1185 esas2r_log(ESAS2R_LOG_INFO, "device_reset (%p)", cmd); 1186 1187 return esas2r_dev_targ_reset(cmd, false); 1188 1189 } 1190 esas2r_target_reset(struct scsi_cmnd * cmd)1191 int esas2r_target_reset(struct scsi_cmnd *cmd) 1192 { 1193 esas2r_log(ESAS2R_LOG_INFO, "target_reset (%p)", cmd); 1194 1195 return esas2r_dev_targ_reset(cmd, true); 1196 } 1197 esas2r_log_request_failure(struct esas2r_adapter * a,struct esas2r_request * rq)1198 void esas2r_log_request_failure(struct esas2r_adapter *a, 1199 struct esas2r_request *rq) 1200 { 1201 u8 reqstatus = rq->req_stat; 1202 1203 if (reqstatus == RS_SUCCESS) 1204 return; 1205 1206 if (rq->vrq->scsi.function == VDA_FUNC_SCSI) { 1207 if (reqstatus == RS_SCSI_ERROR) { 1208 if (rq->func_rsp.scsi_rsp.sense_len >= 13) { 1209 esas2r_log(ESAS2R_LOG_WARN, 1210 "request failure - SCSI error %x ASC:%x ASCQ:%x CDB:%x", 1211 rq->sense_buf[2], rq->sense_buf[12], 1212 rq->sense_buf[13], 1213 rq->vrq->scsi.cdb[0]); 1214 } else { 1215 esas2r_log(ESAS2R_LOG_WARN, 1216 "request failure - SCSI error CDB:%x\n", 1217 rq->vrq->scsi.cdb[0]); 1218 } 1219 } else if ((rq->vrq->scsi.cdb[0] != INQUIRY 1220 && rq->vrq->scsi.cdb[0] != REPORT_LUNS) 1221 || (reqstatus != RS_SEL 1222 && reqstatus != RS_SEL2)) { 1223 if ((reqstatus == RS_UNDERRUN) && 1224 (rq->vrq->scsi.cdb[0] == INQUIRY)) { 1225 /* Don't log inquiry underruns */ 1226 } else { 1227 esas2r_log(ESAS2R_LOG_WARN, 1228 "request failure - cdb:%x reqstatus:%d target:%d", 1229 rq->vrq->scsi.cdb[0], reqstatus, 1230 rq->target_id); 1231 } 1232 } 1233 } 1234 } 1235 esas2r_wait_request(struct esas2r_adapter * a,struct esas2r_request * rq)1236 void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq) 1237 { 1238 u32 starttime; 1239 u32 timeout; 1240 1241 starttime = jiffies_to_msecs(jiffies); 1242 timeout = rq->timeout ? rq->timeout : 5000; 1243 1244 while (true) { 1245 esas2r_polled_interrupt(a); 1246 1247 if (rq->req_stat != RS_STARTED) 1248 break; 1249 1250 schedule_timeout_interruptible(msecs_to_jiffies(100)); 1251 1252 if ((jiffies_to_msecs(jiffies) - starttime) > timeout) { 1253 esas2r_hdebug("request TMO"); 1254 esas2r_bugon(); 1255 1256 rq->req_stat = RS_TIMEOUT; 1257 1258 esas2r_local_reset_adapter(a); 1259 return; 1260 } 1261 } 1262 } 1263 esas2r_map_data_window(struct esas2r_adapter * a,u32 addr_lo)1264 u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo) 1265 { 1266 u32 offset = addr_lo & (MW_DATA_WINDOW_SIZE - 1); 1267 u32 base = addr_lo & -(signed int)MW_DATA_WINDOW_SIZE; 1268 1269 if (a->window_base != base) { 1270 esas2r_write_register_dword(a, MVR_PCI_WIN1_REMAP, 1271 base | MVRPW1R_ENABLE); 1272 esas2r_flush_register_dword(a, MVR_PCI_WIN1_REMAP); 1273 a->window_base = base; 1274 } 1275 1276 return offset; 1277 } 1278 1279 /* Read a block of data from chip memory */ esas2r_read_mem_block(struct esas2r_adapter * a,void * to,u32 from,u32 size)1280 bool esas2r_read_mem_block(struct esas2r_adapter *a, 1281 void *to, 1282 u32 from, 1283 u32 size) 1284 { 1285 u8 *end = (u8 *)to; 1286 1287 while (size) { 1288 u32 len; 1289 u32 offset; 1290 u32 iatvr; 1291 1292 iatvr = (from & -(signed int)MW_DATA_WINDOW_SIZE); 1293 1294 esas2r_map_data_window(a, iatvr); 1295 1296 offset = from & (MW_DATA_WINDOW_SIZE - 1); 1297 len = size; 1298 1299 if (len > MW_DATA_WINDOW_SIZE - offset) 1300 len = MW_DATA_WINDOW_SIZE - offset; 1301 1302 from += len; 1303 size -= len; 1304 1305 while (len--) { 1306 *end++ = esas2r_read_data_byte(a, offset); 1307 offset++; 1308 } 1309 } 1310 1311 return true; 1312 } 1313 esas2r_nuxi_mgt_data(u8 function,void * data)1314 void esas2r_nuxi_mgt_data(u8 function, void *data) 1315 { 1316 struct atto_vda_grp_info *g; 1317 struct atto_vda_devinfo *d; 1318 struct atto_vdapart_info *p; 1319 struct atto_vda_dh_info *h; 1320 struct atto_vda_metrics_info *m; 1321 struct atto_vda_schedule_info *s; 1322 struct atto_vda_buzzer_info *b; 1323 u8 i; 1324 1325 switch (function) { 1326 case VDAMGT_BUZZER_INFO: 1327 case VDAMGT_BUZZER_SET: 1328 1329 b = (struct atto_vda_buzzer_info *)data; 1330 1331 b->duration = le32_to_cpu(b->duration); 1332 break; 1333 1334 case VDAMGT_SCHEDULE_INFO: 1335 case VDAMGT_SCHEDULE_EVENT: 1336 1337 s = (struct atto_vda_schedule_info *)data; 1338 1339 s->id = le32_to_cpu(s->id); 1340 1341 break; 1342 1343 case VDAMGT_DEV_INFO: 1344 case VDAMGT_DEV_CLEAN: 1345 case VDAMGT_DEV_PT_INFO: 1346 case VDAMGT_DEV_FEATURES: 1347 case VDAMGT_DEV_PT_FEATURES: 1348 case VDAMGT_DEV_OPERATION: 1349 1350 d = (struct atto_vda_devinfo *)data; 1351 1352 d->capacity = le64_to_cpu(d->capacity); 1353 d->block_size = le32_to_cpu(d->block_size); 1354 d->ses_dev_index = le16_to_cpu(d->ses_dev_index); 1355 d->target_id = le16_to_cpu(d->target_id); 1356 d->lun = le16_to_cpu(d->lun); 1357 d->features = le16_to_cpu(d->features); 1358 break; 1359 1360 case VDAMGT_GRP_INFO: 1361 case VDAMGT_GRP_CREATE: 1362 case VDAMGT_GRP_DELETE: 1363 case VDAMGT_ADD_STORAGE: 1364 case VDAMGT_MEMBER_ADD: 1365 case VDAMGT_GRP_COMMIT: 1366 case VDAMGT_GRP_REBUILD: 1367 case VDAMGT_GRP_COMMIT_INIT: 1368 case VDAMGT_QUICK_RAID: 1369 case VDAMGT_GRP_FEATURES: 1370 case VDAMGT_GRP_COMMIT_INIT_AUTOMAP: 1371 case VDAMGT_QUICK_RAID_INIT_AUTOMAP: 1372 case VDAMGT_SPARE_LIST: 1373 case VDAMGT_SPARE_ADD: 1374 case VDAMGT_SPARE_REMOVE: 1375 case VDAMGT_LOCAL_SPARE_ADD: 1376 case VDAMGT_GRP_OPERATION: 1377 1378 g = (struct atto_vda_grp_info *)data; 1379 1380 g->capacity = le64_to_cpu(g->capacity); 1381 g->block_size = le32_to_cpu(g->block_size); 1382 g->interleave = le32_to_cpu(g->interleave); 1383 g->features = le16_to_cpu(g->features); 1384 1385 for (i = 0; i < 32; i++) 1386 g->members[i] = le16_to_cpu(g->members[i]); 1387 1388 break; 1389 1390 case VDAMGT_PART_INFO: 1391 case VDAMGT_PART_MAP: 1392 case VDAMGT_PART_UNMAP: 1393 case VDAMGT_PART_AUTOMAP: 1394 case VDAMGT_PART_SPLIT: 1395 case VDAMGT_PART_MERGE: 1396 1397 p = (struct atto_vdapart_info *)data; 1398 1399 p->part_size = le64_to_cpu(p->part_size); 1400 p->start_lba = le32_to_cpu(p->start_lba); 1401 p->block_size = le32_to_cpu(p->block_size); 1402 p->target_id = le16_to_cpu(p->target_id); 1403 break; 1404 1405 case VDAMGT_DEV_HEALTH_REQ: 1406 1407 h = (struct atto_vda_dh_info *)data; 1408 1409 h->med_defect_cnt = le32_to_cpu(h->med_defect_cnt); 1410 h->info_exc_cnt = le32_to_cpu(h->info_exc_cnt); 1411 break; 1412 1413 case VDAMGT_DEV_METRICS: 1414 1415 m = (struct atto_vda_metrics_info *)data; 1416 1417 for (i = 0; i < 32; i++) 1418 m->dev_indexes[i] = le16_to_cpu(m->dev_indexes[i]); 1419 1420 break; 1421 1422 default: 1423 break; 1424 } 1425 } 1426 esas2r_nuxi_cfg_data(u8 function,void * data)1427 void esas2r_nuxi_cfg_data(u8 function, void *data) 1428 { 1429 struct atto_vda_cfg_init *ci; 1430 1431 switch (function) { 1432 case VDA_CFG_INIT: 1433 case VDA_CFG_GET_INIT: 1434 case VDA_CFG_GET_INIT2: 1435 1436 ci = (struct atto_vda_cfg_init *)data; 1437 1438 ci->date_time.year = le16_to_cpu(ci->date_time.year); 1439 ci->sgl_page_size = le32_to_cpu(ci->sgl_page_size); 1440 ci->vda_version = le32_to_cpu(ci->vda_version); 1441 ci->epoch_time = le32_to_cpu(ci->epoch_time); 1442 ci->ioctl_tunnel = le32_to_cpu(ci->ioctl_tunnel); 1443 ci->num_targets_backend = le32_to_cpu(ci->num_targets_backend); 1444 break; 1445 1446 default: 1447 break; 1448 } 1449 } 1450 esas2r_nuxi_ae_data(union atto_vda_ae * ae)1451 void esas2r_nuxi_ae_data(union atto_vda_ae *ae) 1452 { 1453 struct atto_vda_ae_raid *r = &ae->raid; 1454 struct atto_vda_ae_lu *l = &ae->lu; 1455 1456 switch (ae->hdr.bytype) { 1457 case VDAAE_HDR_TYPE_RAID: 1458 1459 r->dwflags = le32_to_cpu(r->dwflags); 1460 break; 1461 1462 case VDAAE_HDR_TYPE_LU: 1463 1464 l->dwevent = le32_to_cpu(l->dwevent); 1465 l->wphys_target_id = le16_to_cpu(l->wphys_target_id); 1466 l->id.tgtlun.wtarget_id = le16_to_cpu(l->id.tgtlun.wtarget_id); 1467 1468 if (l->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id) 1469 + sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) { 1470 l->id.tgtlun_raid.dwinterleave 1471 = le32_to_cpu(l->id.tgtlun_raid.dwinterleave); 1472 l->id.tgtlun_raid.dwblock_size 1473 = le32_to_cpu(l->id.tgtlun_raid.dwblock_size); 1474 } 1475 1476 break; 1477 1478 case VDAAE_HDR_TYPE_DISK: 1479 default: 1480 break; 1481 } 1482 } 1483 esas2r_free_request(struct esas2r_adapter * a,struct esas2r_request * rq)1484 void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq) 1485 { 1486 unsigned long flags; 1487 1488 esas2r_rq_destroy_request(rq, a); 1489 spin_lock_irqsave(&a->request_lock, flags); 1490 list_add(&rq->comp_list, &a->avail_request); 1491 spin_unlock_irqrestore(&a->request_lock, flags); 1492 } 1493 esas2r_alloc_request(struct esas2r_adapter * a)1494 struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a) 1495 { 1496 struct esas2r_request *rq; 1497 unsigned long flags; 1498 1499 spin_lock_irqsave(&a->request_lock, flags); 1500 1501 if (unlikely(list_empty(&a->avail_request))) { 1502 spin_unlock_irqrestore(&a->request_lock, flags); 1503 return NULL; 1504 } 1505 1506 rq = list_first_entry(&a->avail_request, struct esas2r_request, 1507 comp_list); 1508 list_del(&rq->comp_list); 1509 spin_unlock_irqrestore(&a->request_lock, flags); 1510 esas2r_rq_init_request(rq, a); 1511 1512 return rq; 1513 1514 } 1515 esas2r_complete_request_cb(struct esas2r_adapter * a,struct esas2r_request * rq)1516 void esas2r_complete_request_cb(struct esas2r_adapter *a, 1517 struct esas2r_request *rq) 1518 { 1519 esas2r_debug("completing request %p\n", rq); 1520 1521 scsi_dma_unmap(rq->cmd); 1522 1523 if (unlikely(rq->req_stat != RS_SUCCESS)) { 1524 esas2r_debug("[%x STATUS %x:%x (%x)]", rq->target_id, 1525 rq->req_stat, 1526 rq->func_rsp.scsi_rsp.scsi_stat, 1527 rq->cmd); 1528 1529 rq->cmd->result = 1530 ((esas2r_req_status_to_error(rq->req_stat) << 16) 1531 | rq->func_rsp.scsi_rsp.scsi_stat); 1532 1533 if (rq->req_stat == RS_UNDERRUN) 1534 scsi_set_resid(rq->cmd, 1535 le32_to_cpu(rq->func_rsp.scsi_rsp. 1536 residual_length)); 1537 else 1538 scsi_set_resid(rq->cmd, 0); 1539 } 1540 1541 scsi_done(rq->cmd); 1542 1543 esas2r_free_request(a, rq); 1544 } 1545 1546 /* Run tasklet to handle stuff outside of interrupt context. */ esas2r_adapter_tasklet(unsigned long context)1547 void esas2r_adapter_tasklet(unsigned long context) 1548 { 1549 struct esas2r_adapter *a = (struct esas2r_adapter *)context; 1550 1551 if (unlikely(test_bit(AF2_TIMER_TICK, &a->flags2))) { 1552 clear_bit(AF2_TIMER_TICK, &a->flags2); 1553 esas2r_timer_tick(a); 1554 } 1555 1556 if (likely(test_bit(AF2_INT_PENDING, &a->flags2))) { 1557 clear_bit(AF2_INT_PENDING, &a->flags2); 1558 esas2r_adapter_interrupt(a); 1559 } 1560 1561 if (esas2r_is_tasklet_pending(a)) 1562 esas2r_do_tasklet_tasks(a); 1563 1564 if (esas2r_is_tasklet_pending(a) 1565 || (test_bit(AF2_INT_PENDING, &a->flags2)) 1566 || (test_bit(AF2_TIMER_TICK, &a->flags2))) { 1567 clear_bit(AF_TASKLET_SCHEDULED, &a->flags); 1568 esas2r_schedule_tasklet(a); 1569 } else { 1570 clear_bit(AF_TASKLET_SCHEDULED, &a->flags); 1571 } 1572 } 1573 1574 static void esas2r_timer_callback(struct timer_list *t); 1575 esas2r_kickoff_timer(struct esas2r_adapter * a)1576 void esas2r_kickoff_timer(struct esas2r_adapter *a) 1577 { 1578 timer_setup(&a->timer, esas2r_timer_callback, 0); 1579 1580 a->timer.expires = jiffies + 1581 msecs_to_jiffies(100); 1582 1583 add_timer(&a->timer); 1584 } 1585 esas2r_timer_callback(struct timer_list * t)1586 static void esas2r_timer_callback(struct timer_list *t) 1587 { 1588 struct esas2r_adapter *a = from_timer(a, t, timer); 1589 1590 set_bit(AF2_TIMER_TICK, &a->flags2); 1591 1592 esas2r_schedule_tasklet(a); 1593 1594 esas2r_kickoff_timer(a); 1595 } 1596 1597 /* 1598 * Firmware events need to be handled outside of interrupt context 1599 * so we schedule a delayed_work to handle them. 1600 */ 1601 1602 static void esas2r_free_fw_event(struct esas2r_fw_event_work * fw_event)1603 esas2r_free_fw_event(struct esas2r_fw_event_work *fw_event) 1604 { 1605 unsigned long flags; 1606 struct esas2r_adapter *a = fw_event->a; 1607 1608 spin_lock_irqsave(&a->fw_event_lock, flags); 1609 list_del(&fw_event->list); 1610 kfree(fw_event); 1611 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1612 } 1613 1614 void esas2r_fw_event_off(struct esas2r_adapter * a)1615 esas2r_fw_event_off(struct esas2r_adapter *a) 1616 { 1617 unsigned long flags; 1618 1619 spin_lock_irqsave(&a->fw_event_lock, flags); 1620 a->fw_events_off = 1; 1621 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1622 } 1623 1624 void esas2r_fw_event_on(struct esas2r_adapter * a)1625 esas2r_fw_event_on(struct esas2r_adapter *a) 1626 { 1627 unsigned long flags; 1628 1629 spin_lock_irqsave(&a->fw_event_lock, flags); 1630 a->fw_events_off = 0; 1631 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1632 } 1633 esas2r_add_device(struct esas2r_adapter * a,u16 target_id)1634 static void esas2r_add_device(struct esas2r_adapter *a, u16 target_id) 1635 { 1636 int ret; 1637 struct scsi_device *scsi_dev; 1638 1639 scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); 1640 1641 if (scsi_dev) { 1642 esas2r_log_dev( 1643 ESAS2R_LOG_WARN, 1644 &(scsi_dev-> 1645 sdev_gendev), 1646 "scsi device already exists at id %d", target_id); 1647 1648 scsi_device_put(scsi_dev); 1649 } else { 1650 esas2r_log_dev( 1651 ESAS2R_LOG_INFO, 1652 &(a->host-> 1653 shost_gendev), 1654 "scsi_add_device() called for 0:%d:0", 1655 target_id); 1656 1657 ret = scsi_add_device(a->host, 0, target_id, 0); 1658 if (ret) { 1659 esas2r_log_dev( 1660 ESAS2R_LOG_CRIT, 1661 &(a->host-> 1662 shost_gendev), 1663 "scsi_add_device failed with %d for id %d", 1664 ret, target_id); 1665 } 1666 } 1667 } 1668 esas2r_remove_device(struct esas2r_adapter * a,u16 target_id)1669 static void esas2r_remove_device(struct esas2r_adapter *a, u16 target_id) 1670 { 1671 struct scsi_device *scsi_dev; 1672 1673 scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); 1674 1675 if (scsi_dev) { 1676 scsi_device_set_state(scsi_dev, SDEV_OFFLINE); 1677 1678 esas2r_log_dev( 1679 ESAS2R_LOG_INFO, 1680 &(scsi_dev-> 1681 sdev_gendev), 1682 "scsi_remove_device() called for 0:%d:0", 1683 target_id); 1684 1685 scsi_remove_device(scsi_dev); 1686 1687 esas2r_log_dev( 1688 ESAS2R_LOG_INFO, 1689 &(scsi_dev-> 1690 sdev_gendev), 1691 "scsi_device_put() called"); 1692 1693 scsi_device_put(scsi_dev); 1694 } else { 1695 esas2r_log_dev( 1696 ESAS2R_LOG_WARN, 1697 &(a->host->shost_gendev), 1698 "no target found at id %d", 1699 target_id); 1700 } 1701 } 1702 1703 /* 1704 * Sends a firmware asynchronous event to anyone who happens to be 1705 * listening on the defined ATTO VDA event ports. 1706 */ esas2r_send_ae_event(struct esas2r_fw_event_work * fw_event)1707 static void esas2r_send_ae_event(struct esas2r_fw_event_work *fw_event) 1708 { 1709 struct esas2r_vda_ae *ae = (struct esas2r_vda_ae *)fw_event->data; 1710 char *type; 1711 1712 switch (ae->vda_ae.hdr.bytype) { 1713 case VDAAE_HDR_TYPE_RAID: 1714 type = "RAID group state change"; 1715 break; 1716 1717 case VDAAE_HDR_TYPE_LU: 1718 type = "Mapped destination LU change"; 1719 break; 1720 1721 case VDAAE_HDR_TYPE_DISK: 1722 type = "Physical disk inventory change"; 1723 break; 1724 1725 case VDAAE_HDR_TYPE_RESET: 1726 type = "Firmware reset"; 1727 break; 1728 1729 case VDAAE_HDR_TYPE_LOG_INFO: 1730 type = "Event Log message (INFO level)"; 1731 break; 1732 1733 case VDAAE_HDR_TYPE_LOG_WARN: 1734 type = "Event Log message (WARN level)"; 1735 break; 1736 1737 case VDAAE_HDR_TYPE_LOG_CRIT: 1738 type = "Event Log message (CRIT level)"; 1739 break; 1740 1741 case VDAAE_HDR_TYPE_LOG_FAIL: 1742 type = "Event Log message (FAIL level)"; 1743 break; 1744 1745 case VDAAE_HDR_TYPE_NVC: 1746 type = "NVCache change"; 1747 break; 1748 1749 case VDAAE_HDR_TYPE_TLG_INFO: 1750 type = "Time stamped log message (INFO level)"; 1751 break; 1752 1753 case VDAAE_HDR_TYPE_TLG_WARN: 1754 type = "Time stamped log message (WARN level)"; 1755 break; 1756 1757 case VDAAE_HDR_TYPE_TLG_CRIT: 1758 type = "Time stamped log message (CRIT level)"; 1759 break; 1760 1761 case VDAAE_HDR_TYPE_PWRMGT: 1762 type = "Power management"; 1763 break; 1764 1765 case VDAAE_HDR_TYPE_MUTE: 1766 type = "Mute button pressed"; 1767 break; 1768 1769 case VDAAE_HDR_TYPE_DEV: 1770 type = "Device attribute change"; 1771 break; 1772 1773 default: 1774 type = "Unknown"; 1775 break; 1776 } 1777 1778 esas2r_log(ESAS2R_LOG_WARN, 1779 "An async event of type \"%s\" was received from the firmware. The event contents are:", 1780 type); 1781 esas2r_log_hexdump(ESAS2R_LOG_WARN, &ae->vda_ae, 1782 ae->vda_ae.hdr.bylength); 1783 1784 } 1785 1786 static void esas2r_firmware_event_work(struct work_struct * work)1787 esas2r_firmware_event_work(struct work_struct *work) 1788 { 1789 struct esas2r_fw_event_work *fw_event = 1790 container_of(work, struct esas2r_fw_event_work, work.work); 1791 1792 struct esas2r_adapter *a = fw_event->a; 1793 1794 u16 target_id = *(u16 *)&fw_event->data[0]; 1795 1796 if (a->fw_events_off) 1797 goto done; 1798 1799 switch (fw_event->type) { 1800 case fw_event_null: 1801 break; /* do nothing */ 1802 1803 case fw_event_lun_change: 1804 esas2r_remove_device(a, target_id); 1805 esas2r_add_device(a, target_id); 1806 break; 1807 1808 case fw_event_present: 1809 esas2r_add_device(a, target_id); 1810 break; 1811 1812 case fw_event_not_present: 1813 esas2r_remove_device(a, target_id); 1814 break; 1815 1816 case fw_event_vda_ae: 1817 esas2r_send_ae_event(fw_event); 1818 break; 1819 } 1820 1821 done: 1822 esas2r_free_fw_event(fw_event); 1823 } 1824 esas2r_queue_fw_event(struct esas2r_adapter * a,enum fw_event_type type,void * data,int data_sz)1825 void esas2r_queue_fw_event(struct esas2r_adapter *a, 1826 enum fw_event_type type, 1827 void *data, 1828 int data_sz) 1829 { 1830 struct esas2r_fw_event_work *fw_event; 1831 unsigned long flags; 1832 1833 fw_event = kzalloc(sizeof(struct esas2r_fw_event_work), GFP_ATOMIC); 1834 if (!fw_event) { 1835 esas2r_log(ESAS2R_LOG_WARN, 1836 "esas2r_queue_fw_event failed to alloc"); 1837 return; 1838 } 1839 1840 if (type == fw_event_vda_ae) { 1841 struct esas2r_vda_ae *ae = 1842 (struct esas2r_vda_ae *)fw_event->data; 1843 1844 ae->signature = ESAS2R_VDA_EVENT_SIG; 1845 ae->bus_number = a->pcid->bus->number; 1846 ae->devfn = a->pcid->devfn; 1847 memcpy(&ae->vda_ae, data, sizeof(ae->vda_ae)); 1848 } else { 1849 memcpy(fw_event->data, data, data_sz); 1850 } 1851 1852 fw_event->type = type; 1853 fw_event->a = a; 1854 1855 spin_lock_irqsave(&a->fw_event_lock, flags); 1856 list_add_tail(&fw_event->list, &a->fw_event_list); 1857 INIT_DELAYED_WORK(&fw_event->work, esas2r_firmware_event_work); 1858 queue_delayed_work_on( 1859 smp_processor_id(), a->fw_event_q, &fw_event->work, 1860 msecs_to_jiffies(1)); 1861 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1862 } 1863 esas2r_target_state_changed(struct esas2r_adapter * a,u16 targ_id,u8 state)1864 void esas2r_target_state_changed(struct esas2r_adapter *a, u16 targ_id, 1865 u8 state) 1866 { 1867 if (state == TS_LUN_CHANGE) 1868 esas2r_queue_fw_event(a, fw_event_lun_change, &targ_id, 1869 sizeof(targ_id)); 1870 else if (state == TS_PRESENT) 1871 esas2r_queue_fw_event(a, fw_event_present, &targ_id, 1872 sizeof(targ_id)); 1873 else if (state == TS_NOT_PRESENT) 1874 esas2r_queue_fw_event(a, fw_event_not_present, &targ_id, 1875 sizeof(targ_id)); 1876 } 1877 1878 /* Translate status to a Linux SCSI mid-layer error code */ esas2r_req_status_to_error(u8 req_stat)1879 int esas2r_req_status_to_error(u8 req_stat) 1880 { 1881 switch (req_stat) { 1882 case RS_OVERRUN: 1883 case RS_UNDERRUN: 1884 case RS_SUCCESS: 1885 /* 1886 * NOTE: SCSI mid-layer wants a good status for a SCSI error, because 1887 * it will check the scsi_stat value in the completion anyway. 1888 */ 1889 case RS_SCSI_ERROR: 1890 return DID_OK; 1891 1892 case RS_SEL: 1893 case RS_SEL2: 1894 return DID_NO_CONNECT; 1895 1896 case RS_RESET: 1897 return DID_RESET; 1898 1899 case RS_ABORTED: 1900 return DID_ABORT; 1901 1902 case RS_BUSY: 1903 return DID_BUS_BUSY; 1904 } 1905 1906 /* everything else is just an error. */ 1907 1908 return DID_ERROR; 1909 } 1910 1911 module_init(esas2r_init); 1912 module_exit(esas2r_exit); 1913