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