1 /* 2 * This file is provided under a dual BSD/GPLv2 license. When using or 3 * redistributing this file, you may do so under either license. 4 * 5 * GPL LICENSE SUMMARY 6 * 7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21 * The full GNU General Public License is included in this distribution 22 * in the file called LICENSE.GPL. 23 * 24 * BSD LICENSE 25 * 26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 33 * * Redistributions of source code must retain the above copyright 34 * notice, this list of conditions and the following disclaimer. 35 * * Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in 37 * the documentation and/or other materials provided with the 38 * distribution. 39 * * Neither the name of Intel Corporation nor the names of its 40 * contributors may be used to endorse or promote products derived 41 * from this software without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <linux/kernel.h> 57 #include <linux/init.h> 58 #include <linux/module.h> 59 #include <linux/firmware.h> 60 #include <linux/efi.h> 61 #include <asm/string.h> 62 #include <scsi/scsi_host.h> 63 #include "host.h" 64 #include "isci.h" 65 #include "task.h" 66 #include "probe_roms.h" 67 68 #define DRV_VERSION "1.2.0" 69 70 MODULE_VERSION(DRV_VERSION); 71 72 static struct scsi_transport_template *isci_transport_template; 73 74 static const struct pci_device_id isci_id_table[] = { 75 { PCI_VDEVICE(INTEL, 0x1D61),}, 76 { PCI_VDEVICE(INTEL, 0x1D63),}, 77 { PCI_VDEVICE(INTEL, 0x1D65),}, 78 { PCI_VDEVICE(INTEL, 0x1D67),}, 79 { PCI_VDEVICE(INTEL, 0x1D69),}, 80 { PCI_VDEVICE(INTEL, 0x1D6B),}, 81 { PCI_VDEVICE(INTEL, 0x1D60),}, 82 { PCI_VDEVICE(INTEL, 0x1D62),}, 83 { PCI_VDEVICE(INTEL, 0x1D64),}, 84 { PCI_VDEVICE(INTEL, 0x1D66),}, 85 { PCI_VDEVICE(INTEL, 0x1D68),}, 86 { PCI_VDEVICE(INTEL, 0x1D6A),}, 87 {} 88 }; 89 90 MODULE_DEVICE_TABLE(pci, isci_id_table); 91 92 /* linux isci specific settings */ 93 94 unsigned char no_outbound_task_to = 2; 95 module_param(no_outbound_task_to, byte, 0); 96 MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)"); 97 98 u16 ssp_max_occ_to = 20; 99 module_param(ssp_max_occ_to, ushort, 0); 100 MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)"); 101 102 u16 stp_max_occ_to = 5; 103 module_param(stp_max_occ_to, ushort, 0); 104 MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)"); 105 106 u16 ssp_inactive_to = 5; 107 module_param(ssp_inactive_to, ushort, 0); 108 MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)"); 109 110 u16 stp_inactive_to = 5; 111 module_param(stp_inactive_to, ushort, 0); 112 MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)"); 113 114 unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED; 115 module_param(phy_gen, byte, 0); 116 MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)"); 117 118 unsigned char max_concurr_spinup; 119 module_param(max_concurr_spinup, byte, 0); 120 MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); 121 122 uint cable_selection_override = CABLE_OVERRIDE_DISABLED; 123 module_param(cable_selection_override, uint, 0); 124 125 MODULE_PARM_DESC(cable_selection_override, 126 "This field indicates length of the SAS/SATA cable between " 127 "host and device. If any bits > 15 are set (default) " 128 "indicates \"use platform defaults\""); 129 130 static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf) 131 { 132 struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev); 133 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); 134 struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha); 135 136 return sysfs_emit(buf, "%d\n", ihost->id); 137 } 138 139 static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL); 140 141 static struct attribute *isci_host_attrs[] = { 142 &dev_attr_isci_id.attr, 143 NULL 144 }; 145 146 ATTRIBUTE_GROUPS(isci_host); 147 148 static const struct attribute_group *isci_sdev_groups[] = { 149 &sas_ata_sdev_attr_group, 150 NULL 151 }; 152 153 static const struct scsi_host_template isci_sht = { 154 LIBSAS_SHT_BASE 155 .scan_finished = isci_host_scan_finished, 156 .scan_start = isci_host_start, 157 .can_queue = ISCI_CAN_QUEUE_VAL, 158 .sg_tablesize = SG_ALL, 159 .eh_abort_handler = sas_eh_abort_handler, 160 .shost_groups = isci_host_groups, 161 .sdev_groups = isci_sdev_groups, 162 .track_queue_depth = 1, 163 }; 164 165 static struct sas_domain_function_template isci_transport_ops = { 166 167 /* The class calls these to notify the LLDD of an event. */ 168 .lldd_port_formed = isci_port_formed, 169 .lldd_port_deformed = isci_port_deformed, 170 171 /* The class calls these when a device is found or gone. */ 172 .lldd_dev_found = isci_remote_device_found, 173 .lldd_dev_gone = isci_remote_device_gone, 174 175 .lldd_execute_task = isci_task_execute_task, 176 /* Task Management Functions. Must be called from process context. */ 177 .lldd_abort_task = isci_task_abort_task, 178 .lldd_abort_task_set = isci_task_abort_task_set, 179 .lldd_clear_task_set = isci_task_clear_task_set, 180 .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, 181 .lldd_lu_reset = isci_task_lu_reset, 182 .lldd_query_task = isci_task_query_task, 183 184 /* ata recovery called from ata-eh */ 185 .lldd_ata_check_ready = isci_ata_check_ready, 186 187 /* Port and Adapter management */ 188 .lldd_clear_nexus_port = isci_task_clear_nexus_port, 189 .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, 190 191 /* Phy management */ 192 .lldd_control_phy = isci_phy_control, 193 194 /* GPIO support */ 195 .lldd_write_gpio = isci_gpio_write, 196 }; 197 198 199 /****************************************************************************** 200 * P R O T E C T E D M E T H O D S 201 ******************************************************************************/ 202 203 204 205 /** 206 * isci_register_sas_ha() - This method initializes various lldd 207 * specific members of the sas_ha struct and calls the libsas 208 * sas_register_ha() function. 209 * @isci_host: This parameter specifies the lldd specific wrapper for the 210 * libsas sas_ha struct. 211 * 212 * This method returns an error code indicating success or failure. The user 213 * should check for possible memory allocation error return otherwise, a zero 214 * indicates success. 215 */ 216 static int isci_register_sas_ha(struct isci_host *isci_host) 217 { 218 int i; 219 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); 220 struct asd_sas_phy **sas_phys; 221 struct asd_sas_port **sas_ports; 222 223 sas_phys = devm_kcalloc(&isci_host->pdev->dev, 224 SCI_MAX_PHYS, sizeof(void *), 225 GFP_KERNEL); 226 if (!sas_phys) 227 return -ENOMEM; 228 229 sas_ports = devm_kcalloc(&isci_host->pdev->dev, 230 SCI_MAX_PORTS, sizeof(void *), 231 GFP_KERNEL); 232 if (!sas_ports) 233 return -ENOMEM; 234 235 sas_ha->sas_ha_name = DRV_NAME; 236 sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; 237 238 for (i = 0; i < SCI_MAX_PHYS; i++) { 239 sas_phys[i] = &isci_host->phys[i].sas_phy; 240 sas_ports[i] = &isci_host->sas_ports[i]; 241 } 242 243 sas_ha->sas_phy = sas_phys; 244 sas_ha->sas_port = sas_ports; 245 sas_ha->num_phys = SCI_MAX_PHYS; 246 247 sas_ha->strict_wide_ports = 1; 248 249 return sas_register_ha(sas_ha); 250 } 251 252 static void isci_unregister(struct isci_host *isci_host) 253 { 254 struct Scsi_Host *shost; 255 256 if (!isci_host) 257 return; 258 259 shost = to_shost(isci_host); 260 sas_unregister_ha(&isci_host->sas_ha); 261 262 sas_remove_host(shost); 263 scsi_host_put(shost); 264 } 265 266 static int isci_pci_init(struct pci_dev *pdev) 267 { 268 int err, bar_num, bar_mask = 0; 269 void __iomem * const *iomap; 270 271 err = pcim_enable_device(pdev); 272 if (err) { 273 dev_err(&pdev->dev, 274 "failed enable PCI device %s!\n", 275 pci_name(pdev)); 276 return err; 277 } 278 279 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) 280 bar_mask |= 1 << (bar_num * 2); 281 282 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); 283 if (err) 284 return err; 285 286 iomap = pcim_iomap_table(pdev); 287 if (!iomap) 288 return -ENOMEM; 289 290 pci_set_master(pdev); 291 292 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 293 if (err) 294 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 295 return err; 296 } 297 298 static int num_controllers(struct pci_dev *pdev) 299 { 300 /* bar size alone can tell us if we are running with a dual controller 301 * part, no need to trust revision ids that might be under broken firmware 302 * control 303 */ 304 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); 305 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); 306 307 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && 308 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) 309 return SCI_MAX_CONTROLLERS; 310 else 311 return 1; 312 } 313 314 static int isci_setup_interrupts(struct pci_dev *pdev) 315 { 316 int err, i, num_msix; 317 struct isci_host *ihost; 318 struct isci_pci_info *pci_info = to_pci_info(pdev); 319 320 /* 321 * Determine the number of vectors associated with this 322 * PCI function. 323 */ 324 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; 325 326 err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX); 327 if (err < 0) 328 goto intx; 329 330 for (i = 0; i < num_msix; i++) { 331 int id = i / SCI_NUM_MSI_X_INT; 332 irq_handler_t isr; 333 334 ihost = pci_info->hosts[id]; 335 /* odd numbered vectors are error interrupts */ 336 if (i & 1) 337 isr = isci_error_isr; 338 else 339 isr = isci_msix_isr; 340 341 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i), 342 isr, 0, DRV_NAME"-msix", ihost); 343 if (!err) 344 continue; 345 346 dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); 347 while (i--) { 348 id = i / SCI_NUM_MSI_X_INT; 349 ihost = pci_info->hosts[id]; 350 devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), 351 ihost); 352 } 353 pci_free_irq_vectors(pdev); 354 goto intx; 355 } 356 return 0; 357 358 intx: 359 for_each_isci_host(i, ihost, pdev) { 360 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0), 361 isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", 362 ihost); 363 if (err) 364 break; 365 } 366 return err; 367 } 368 369 static void isci_user_parameters_get(struct sci_user_parameters *u) 370 { 371 int i; 372 373 for (i = 0; i < SCI_MAX_PHYS; i++) { 374 struct sci_phy_user_params *u_phy = &u->phys[i]; 375 376 u_phy->max_speed_generation = phy_gen; 377 378 /* we are not exporting these for now */ 379 u_phy->align_insertion_frequency = 0x7f; 380 u_phy->in_connection_align_insertion_frequency = 0xff; 381 u_phy->notify_enable_spin_up_insertion_frequency = 0x33; 382 } 383 384 u->stp_inactivity_timeout = stp_inactive_to; 385 u->ssp_inactivity_timeout = ssp_inactive_to; 386 u->stp_max_occupancy_timeout = stp_max_occ_to; 387 u->ssp_max_occupancy_timeout = ssp_max_occ_to; 388 u->no_outbound_task_timeout = no_outbound_task_to; 389 u->max_concurr_spinup = max_concurr_spinup; 390 } 391 392 static enum sci_status sci_user_parameters_set(struct isci_host *ihost, 393 struct sci_user_parameters *sci_parms) 394 { 395 u16 index; 396 397 /* 398 * Validate the user parameters. If they are not legal, then 399 * return a failure. 400 */ 401 for (index = 0; index < SCI_MAX_PHYS; index++) { 402 struct sci_phy_user_params *u; 403 404 u = &sci_parms->phys[index]; 405 406 if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && 407 (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) 408 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 409 410 if ((u->in_connection_align_insertion_frequency < 3) || 411 (u->align_insertion_frequency == 0) || 412 (u->notify_enable_spin_up_insertion_frequency == 0)) 413 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 414 } 415 416 if ((sci_parms->stp_inactivity_timeout == 0) || 417 (sci_parms->ssp_inactivity_timeout == 0) || 418 (sci_parms->stp_max_occupancy_timeout == 0) || 419 (sci_parms->ssp_max_occupancy_timeout == 0) || 420 (sci_parms->no_outbound_task_timeout == 0)) 421 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 422 423 memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); 424 425 return SCI_SUCCESS; 426 } 427 428 static void sci_oem_defaults(struct isci_host *ihost) 429 { 430 /* these defaults are overridden by the platform / firmware */ 431 struct sci_user_parameters *user = &ihost->user_parameters; 432 struct sci_oem_params *oem = &ihost->oem_parameters; 433 int i; 434 435 /* Default to APC mode. */ 436 oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; 437 438 /* Default to APC mode. */ 439 oem->controller.max_concurr_spin_up = 1; 440 441 /* Default to no SSC operation. */ 442 oem->controller.do_enable_ssc = false; 443 444 /* Default to short cables on all phys. */ 445 oem->controller.cable_selection_mask = 0; 446 447 /* Initialize all of the port parameter information to narrow ports. */ 448 for (i = 0; i < SCI_MAX_PORTS; i++) 449 oem->ports[i].phy_mask = 0; 450 451 /* Initialize all of the phy parameter information. */ 452 for (i = 0; i < SCI_MAX_PHYS; i++) { 453 /* Default to 3G (i.e. Gen 2). */ 454 user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; 455 456 /* the frequencies cannot be 0 */ 457 user->phys[i].align_insertion_frequency = 0x7f; 458 user->phys[i].in_connection_align_insertion_frequency = 0xff; 459 user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; 460 461 /* Previous Vitesse based expanders had a arbitration issue that 462 * is worked around by having the upper 32-bits of SAS address 463 * with a value greater then the Vitesse company identifier. 464 * Hence, usage of 0x5FCFFFFF. 465 */ 466 oem->phys[i].sas_address.low = 0x1 + ihost->id; 467 oem->phys[i].sas_address.high = 0x5FCFFFFF; 468 } 469 470 user->stp_inactivity_timeout = 5; 471 user->ssp_inactivity_timeout = 5; 472 user->stp_max_occupancy_timeout = 5; 473 user->ssp_max_occupancy_timeout = 20; 474 user->no_outbound_task_timeout = 2; 475 } 476 477 static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) 478 { 479 struct isci_orom *orom = to_pci_info(pdev)->orom; 480 struct sci_user_parameters sci_user_params; 481 u8 oem_version = ISCI_ROM_VER_1_0; 482 struct isci_host *ihost; 483 struct Scsi_Host *shost; 484 int err, i; 485 486 ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); 487 if (!ihost) 488 return NULL; 489 490 ihost->pdev = pdev; 491 ihost->id = id; 492 spin_lock_init(&ihost->scic_lock); 493 init_waitqueue_head(&ihost->eventq); 494 ihost->sas_ha.dev = &ihost->pdev->dev; 495 ihost->sas_ha.lldd_ha = ihost; 496 tasklet_init(&ihost->completion_tasklet, 497 isci_host_completion_routine, (unsigned long)ihost); 498 499 /* validate module parameters */ 500 /* TODO: kill struct sci_user_parameters and reference directly */ 501 sci_oem_defaults(ihost); 502 isci_user_parameters_get(&sci_user_params); 503 if (sci_user_parameters_set(ihost, &sci_user_params)) { 504 dev_warn(&pdev->dev, 505 "%s: sci_user_parameters_set failed\n", __func__); 506 return NULL; 507 } 508 509 /* sanity check platform (or 'firmware') oem parameters */ 510 if (orom) { 511 if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { 512 dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); 513 return NULL; 514 } 515 ihost->oem_parameters = orom->ctrl[id]; 516 oem_version = orom->hdr.version; 517 } 518 519 /* validate oem parameters (platform, firmware, or built-in defaults) */ 520 if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { 521 dev_warn(&pdev->dev, "oem parameter validation failed\n"); 522 return NULL; 523 } 524 525 for (i = 0; i < SCI_MAX_PORTS; i++) { 526 struct isci_port *iport = &ihost->ports[i]; 527 528 INIT_LIST_HEAD(&iport->remote_dev_list); 529 iport->isci_host = ihost; 530 } 531 532 for (i = 0; i < SCI_MAX_PHYS; i++) 533 isci_phy_init(&ihost->phys[i], ihost, i); 534 535 for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 536 struct isci_remote_device *idev = &ihost->devices[i]; 537 538 INIT_LIST_HEAD(&idev->node); 539 } 540 541 shost = scsi_host_alloc(&isci_sht, sizeof(void *)); 542 if (!shost) 543 return NULL; 544 545 dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " 546 "{%s, %s, %s, %s}\n", 547 (is_cable_select_overridden() ? "* " : ""), ihost->id, 548 lookup_cable_names(decode_cable_selection(ihost, 3)), 549 lookup_cable_names(decode_cable_selection(ihost, 2)), 550 lookup_cable_names(decode_cable_selection(ihost, 1)), 551 lookup_cable_names(decode_cable_selection(ihost, 0))); 552 553 err = isci_host_init(ihost); 554 if (err) 555 goto err_shost; 556 557 SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; 558 ihost->sas_ha.shost = shost; 559 shost->transportt = isci_transport_template; 560 561 shost->max_id = ~0; 562 shost->max_lun = ~0; 563 shost->max_cmd_len = MAX_COMMAND_SIZE; 564 565 /* turn on DIF support */ 566 scsi_host_set_prot(shost, 567 SHOST_DIF_TYPE1_PROTECTION | 568 SHOST_DIF_TYPE2_PROTECTION | 569 SHOST_DIF_TYPE3_PROTECTION); 570 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); 571 572 err = scsi_add_host(shost, &pdev->dev); 573 if (err) 574 goto err_shost; 575 576 err = isci_register_sas_ha(ihost); 577 if (err) 578 goto err_shost_remove; 579 580 return ihost; 581 582 err_shost_remove: 583 scsi_remove_host(shost); 584 err_shost: 585 scsi_host_put(shost); 586 587 return NULL; 588 } 589 590 static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 591 { 592 struct isci_pci_info *pci_info; 593 int err, i; 594 struct isci_host *isci_host; 595 const struct firmware *fw = NULL; 596 struct isci_orom *orom = NULL; 597 char *source = "(platform)"; 598 599 dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", 600 pdev->revision); 601 602 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); 603 if (!pci_info) 604 return -ENOMEM; 605 pci_set_drvdata(pdev, pci_info); 606 607 if (efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 608 orom = isci_get_efi_var(pdev); 609 610 if (!orom) 611 orom = isci_request_oprom(pdev); 612 613 for (i = 0; orom && i < num_controllers(pdev); i++) { 614 if (sci_oem_parameters_validate(&orom->ctrl[i], 615 orom->hdr.version)) { 616 dev_warn(&pdev->dev, 617 "[%d]: invalid oem parameters detected, falling back to firmware\n", i); 618 orom = NULL; 619 break; 620 } 621 } 622 623 if (!orom) { 624 source = "(firmware)"; 625 orom = isci_request_firmware(pdev, fw); 626 if (!orom) { 627 /* TODO convert this to WARN_TAINT_ONCE once the 628 * orom/efi parameter support is widely available 629 */ 630 dev_warn(&pdev->dev, 631 "Loading user firmware failed, using default " 632 "values\n"); 633 dev_warn(&pdev->dev, 634 "Default OEM configuration being used: 4 " 635 "narrow ports, and default SAS Addresses\n"); 636 } 637 } 638 639 if (orom) 640 dev_info(&pdev->dev, 641 "OEM SAS parameters (version: %u.%u) loaded %s\n", 642 (orom->hdr.version & 0xf0) >> 4, 643 (orom->hdr.version & 0xf), source); 644 645 pci_info->orom = orom; 646 647 err = isci_pci_init(pdev); 648 if (err) 649 return err; 650 651 for (i = 0; i < num_controllers(pdev); i++) { 652 struct isci_host *h = isci_host_alloc(pdev, i); 653 654 if (!h) { 655 err = -ENOMEM; 656 goto err_host_alloc; 657 } 658 pci_info->hosts[i] = h; 659 } 660 661 err = isci_setup_interrupts(pdev); 662 if (err) 663 goto err_host_alloc; 664 665 for_each_isci_host(i, isci_host, pdev) 666 scsi_scan_host(to_shost(isci_host)); 667 668 return 0; 669 670 err_host_alloc: 671 for_each_isci_host(i, isci_host, pdev) 672 isci_unregister(isci_host); 673 return err; 674 } 675 676 static void isci_pci_remove(struct pci_dev *pdev) 677 { 678 struct isci_host *ihost; 679 int i; 680 681 for_each_isci_host(i, ihost, pdev) { 682 wait_for_start(ihost); 683 isci_unregister(ihost); 684 isci_host_deinit(ihost); 685 } 686 } 687 688 #ifdef CONFIG_PM_SLEEP 689 static int isci_suspend(struct device *dev) 690 { 691 struct pci_dev *pdev = to_pci_dev(dev); 692 struct isci_host *ihost; 693 int i; 694 695 for_each_isci_host(i, ihost, pdev) { 696 sas_suspend_ha(&ihost->sas_ha); 697 isci_host_deinit(ihost); 698 } 699 700 return 0; 701 } 702 703 static int isci_resume(struct device *dev) 704 { 705 struct pci_dev *pdev = to_pci_dev(dev); 706 struct isci_host *ihost; 707 int i; 708 709 for_each_isci_host(i, ihost, pdev) { 710 sas_prep_resume_ha(&ihost->sas_ha); 711 712 isci_host_init(ihost); 713 isci_host_start(ihost->sas_ha.shost); 714 wait_for_start(ihost); 715 716 sas_resume_ha(&ihost->sas_ha); 717 } 718 719 return 0; 720 } 721 #endif 722 723 static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); 724 725 static struct pci_driver isci_pci_driver = { 726 .name = DRV_NAME, 727 .id_table = isci_id_table, 728 .probe = isci_pci_probe, 729 .remove = isci_pci_remove, 730 .driver.pm = &isci_pm_ops, 731 }; 732 733 static __init int isci_init(void) 734 { 735 int err; 736 737 pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", 738 DRV_NAME, DRV_VERSION); 739 740 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); 741 if (!isci_transport_template) 742 return -ENOMEM; 743 744 err = pci_register_driver(&isci_pci_driver); 745 if (err) 746 sas_release_transport(isci_transport_template); 747 748 return err; 749 } 750 751 static __exit void isci_exit(void) 752 { 753 pci_unregister_driver(&isci_pci_driver); 754 sas_release_transport(isci_transport_template); 755 } 756 757 MODULE_DESCRIPTION("Intel(R) C600 Series Chipset SAS Controller driver"); 758 MODULE_LICENSE("Dual BSD/GPL"); 759 MODULE_FIRMWARE(ISCI_FW_NAME); 760 module_init(isci_init); 761 module_exit(isci_exit); 762