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 MAJ 1 69#define MIN 2 70#define BUILD 0 71#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ 72 __stringify(BUILD) 73 74MODULE_VERSION(DRV_VERSION); 75 76static struct scsi_transport_template *isci_transport_template; 77 78static const struct pci_device_id isci_id_table[] = { 79 { PCI_VDEVICE(INTEL, 0x1D61),}, 80 { PCI_VDEVICE(INTEL, 0x1D63),}, 81 { PCI_VDEVICE(INTEL, 0x1D65),}, 82 { PCI_VDEVICE(INTEL, 0x1D67),}, 83 { PCI_VDEVICE(INTEL, 0x1D69),}, 84 { PCI_VDEVICE(INTEL, 0x1D6B),}, 85 { PCI_VDEVICE(INTEL, 0x1D60),}, 86 { PCI_VDEVICE(INTEL, 0x1D62),}, 87 { PCI_VDEVICE(INTEL, 0x1D64),}, 88 { PCI_VDEVICE(INTEL, 0x1D66),}, 89 { PCI_VDEVICE(INTEL, 0x1D68),}, 90 { PCI_VDEVICE(INTEL, 0x1D6A),}, 91 {} 92}; 93 94MODULE_DEVICE_TABLE(pci, isci_id_table); 95 96/* linux isci specific settings */ 97 98unsigned char no_outbound_task_to = 2; 99module_param(no_outbound_task_to, byte, 0); 100MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)"); 101 102u16 ssp_max_occ_to = 20; 103module_param(ssp_max_occ_to, ushort, 0); 104MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)"); 105 106u16 stp_max_occ_to = 5; 107module_param(stp_max_occ_to, ushort, 0); 108MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)"); 109 110u16 ssp_inactive_to = 5; 111module_param(ssp_inactive_to, ushort, 0); 112MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)"); 113 114u16 stp_inactive_to = 5; 115module_param(stp_inactive_to, ushort, 0); 116MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)"); 117 118unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED; 119module_param(phy_gen, byte, 0); 120MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)"); 121 122unsigned char max_concurr_spinup; 123module_param(max_concurr_spinup, byte, 0); 124MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); 125 126uint cable_selection_override = CABLE_OVERRIDE_DISABLED; 127module_param(cable_selection_override, uint, 0); 128 129MODULE_PARM_DESC(cable_selection_override, 130 "This field indicates length of the SAS/SATA cable between " 131 "host and device. If any bits > 15 are set (default) " 132 "indicates \"use platform defaults\""); 133 134static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf) 135{ 136 struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev); 137 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); 138 struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha); 139 140 return sysfs_emit(buf, "%d\n", ihost->id); 141} 142 143static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL); 144 145static struct attribute *isci_host_attrs[] = { 146 &dev_attr_isci_id.attr, 147 NULL 148}; 149 150ATTRIBUTE_GROUPS(isci_host); 151 152static const struct attribute_group *isci_sdev_groups[] = { 153 &sas_ata_sdev_attr_group, 154 NULL 155}; 156 157static const struct scsi_host_template isci_sht = { 158 LIBSAS_SHT_BASE 159 .scan_finished = isci_host_scan_finished, 160 .scan_start = isci_host_start, 161 .can_queue = ISCI_CAN_QUEUE_VAL, 162 .sg_tablesize = SG_ALL, 163 .eh_abort_handler = sas_eh_abort_handler, 164 .shost_groups = isci_host_groups, 165 .sdev_groups = isci_sdev_groups, 166 .track_queue_depth = 1, 167}; 168 169static struct sas_domain_function_template isci_transport_ops = { 170 171 /* The class calls these to notify the LLDD of an event. */ 172 .lldd_port_formed = isci_port_formed, 173 .lldd_port_deformed = isci_port_deformed, 174 175 /* The class calls these when a device is found or gone. */ 176 .lldd_dev_found = isci_remote_device_found, 177 .lldd_dev_gone = isci_remote_device_gone, 178 179 .lldd_execute_task = isci_task_execute_task, 180 /* Task Management Functions. Must be called from process context. */ 181 .lldd_abort_task = isci_task_abort_task, 182 .lldd_abort_task_set = isci_task_abort_task_set, 183 .lldd_clear_task_set = isci_task_clear_task_set, 184 .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, 185 .lldd_lu_reset = isci_task_lu_reset, 186 .lldd_query_task = isci_task_query_task, 187 188 /* ata recovery called from ata-eh */ 189 .lldd_ata_check_ready = isci_ata_check_ready, 190 191 /* Port and Adapter management */ 192 .lldd_clear_nexus_port = isci_task_clear_nexus_port, 193 .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, 194 195 /* Phy management */ 196 .lldd_control_phy = isci_phy_control, 197 198 /* GPIO support */ 199 .lldd_write_gpio = isci_gpio_write, 200}; 201 202 203/****************************************************************************** 204* P R O T E C T E D M E T H O D S 205******************************************************************************/ 206 207 208 209/** 210 * isci_register_sas_ha() - This method initializes various lldd 211 * specific members of the sas_ha struct and calls the libsas 212 * sas_register_ha() function. 213 * @isci_host: This parameter specifies the lldd specific wrapper for the 214 * libsas sas_ha struct. 215 * 216 * This method returns an error code indicating success or failure. The user 217 * should check for possible memory allocation error return otherwise, a zero 218 * indicates success. 219 */ 220static int isci_register_sas_ha(struct isci_host *isci_host) 221{ 222 int i; 223 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); 224 struct asd_sas_phy **sas_phys; 225 struct asd_sas_port **sas_ports; 226 227 sas_phys = devm_kcalloc(&isci_host->pdev->dev, 228 SCI_MAX_PHYS, sizeof(void *), 229 GFP_KERNEL); 230 if (!sas_phys) 231 return -ENOMEM; 232 233 sas_ports = devm_kcalloc(&isci_host->pdev->dev, 234 SCI_MAX_PORTS, sizeof(void *), 235 GFP_KERNEL); 236 if (!sas_ports) 237 return -ENOMEM; 238 239 sas_ha->sas_ha_name = DRV_NAME; 240 sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; 241 242 for (i = 0; i < SCI_MAX_PHYS; i++) { 243 sas_phys[i] = &isci_host->phys[i].sas_phy; 244 sas_ports[i] = &isci_host->sas_ports[i]; 245 } 246 247 sas_ha->sas_phy = sas_phys; 248 sas_ha->sas_port = sas_ports; 249 sas_ha->num_phys = SCI_MAX_PHYS; 250 251 sas_ha->strict_wide_ports = 1; 252 253 return sas_register_ha(sas_ha); 254} 255 256static void isci_unregister(struct isci_host *isci_host) 257{ 258 struct Scsi_Host *shost; 259 260 if (!isci_host) 261 return; 262 263 shost = to_shost(isci_host); 264 sas_unregister_ha(&isci_host->sas_ha); 265 266 sas_remove_host(shost); 267 scsi_host_put(shost); 268} 269 270static int isci_pci_init(struct pci_dev *pdev) 271{ 272 int err, bar_num, bar_mask = 0; 273 void __iomem * const *iomap; 274 275 err = pcim_enable_device(pdev); 276 if (err) { 277 dev_err(&pdev->dev, 278 "failed enable PCI device %s!\n", 279 pci_name(pdev)); 280 return err; 281 } 282 283 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) 284 bar_mask |= 1 << (bar_num * 2); 285 286 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); 287 if (err) 288 return err; 289 290 iomap = pcim_iomap_table(pdev); 291 if (!iomap) 292 return -ENOMEM; 293 294 pci_set_master(pdev); 295 296 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 297 if (err) 298 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 299 return err; 300} 301 302static int num_controllers(struct pci_dev *pdev) 303{ 304 /* bar size alone can tell us if we are running with a dual controller 305 * part, no need to trust revision ids that might be under broken firmware 306 * control 307 */ 308 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); 309 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); 310 311 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && 312 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) 313 return SCI_MAX_CONTROLLERS; 314 else 315 return 1; 316} 317 318static int isci_setup_interrupts(struct pci_dev *pdev) 319{ 320 int err, i, num_msix; 321 struct isci_host *ihost; 322 struct isci_pci_info *pci_info = to_pci_info(pdev); 323 324 /* 325 * Determine the number of vectors associated with this 326 * PCI function. 327 */ 328 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; 329 330 err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX); 331 if (err < 0) 332 goto intx; 333 334 for (i = 0; i < num_msix; i++) { 335 int id = i / SCI_NUM_MSI_X_INT; 336 irq_handler_t isr; 337 338 ihost = pci_info->hosts[id]; 339 /* odd numbered vectors are error interrupts */ 340 if (i & 1) 341 isr = isci_error_isr; 342 else 343 isr = isci_msix_isr; 344 345 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i), 346 isr, 0, DRV_NAME"-msix", ihost); 347 if (!err) 348 continue; 349 350 dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); 351 while (i--) { 352 id = i / SCI_NUM_MSI_X_INT; 353 ihost = pci_info->hosts[id]; 354 devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), 355 ihost); 356 } 357 pci_free_irq_vectors(pdev); 358 goto intx; 359 } 360 return 0; 361 362 intx: 363 for_each_isci_host(i, ihost, pdev) { 364 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0), 365 isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", 366 ihost); 367 if (err) 368 break; 369 } 370 return err; 371} 372 373static void isci_user_parameters_get(struct sci_user_parameters *u) 374{ 375 int i; 376 377 for (i = 0; i < SCI_MAX_PHYS; i++) { 378 struct sci_phy_user_params *u_phy = &u->phys[i]; 379 380 u_phy->max_speed_generation = phy_gen; 381 382 /* we are not exporting these for now */ 383 u_phy->align_insertion_frequency = 0x7f; 384 u_phy->in_connection_align_insertion_frequency = 0xff; 385 u_phy->notify_enable_spin_up_insertion_frequency = 0x33; 386 } 387 388 u->stp_inactivity_timeout = stp_inactive_to; 389 u->ssp_inactivity_timeout = ssp_inactive_to; 390 u->stp_max_occupancy_timeout = stp_max_occ_to; 391 u->ssp_max_occupancy_timeout = ssp_max_occ_to; 392 u->no_outbound_task_timeout = no_outbound_task_to; 393 u->max_concurr_spinup = max_concurr_spinup; 394} 395 396static enum sci_status sci_user_parameters_set(struct isci_host *ihost, 397 struct sci_user_parameters *sci_parms) 398{ 399 u16 index; 400 401 /* 402 * Validate the user parameters. If they are not legal, then 403 * return a failure. 404 */ 405 for (index = 0; index < SCI_MAX_PHYS; index++) { 406 struct sci_phy_user_params *u; 407 408 u = &sci_parms->phys[index]; 409 410 if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && 411 (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) 412 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 413 414 if ((u->in_connection_align_insertion_frequency < 3) || 415 (u->align_insertion_frequency == 0) || 416 (u->notify_enable_spin_up_insertion_frequency == 0)) 417 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 418 } 419 420 if ((sci_parms->stp_inactivity_timeout == 0) || 421 (sci_parms->ssp_inactivity_timeout == 0) || 422 (sci_parms->stp_max_occupancy_timeout == 0) || 423 (sci_parms->ssp_max_occupancy_timeout == 0) || 424 (sci_parms->no_outbound_task_timeout == 0)) 425 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 426 427 memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); 428 429 return SCI_SUCCESS; 430} 431 432static void sci_oem_defaults(struct isci_host *ihost) 433{ 434 /* these defaults are overridden by the platform / firmware */ 435 struct sci_user_parameters *user = &ihost->user_parameters; 436 struct sci_oem_params *oem = &ihost->oem_parameters; 437 int i; 438 439 /* Default to APC mode. */ 440 oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; 441 442 /* Default to APC mode. */ 443 oem->controller.max_concurr_spin_up = 1; 444 445 /* Default to no SSC operation. */ 446 oem->controller.do_enable_ssc = false; 447 448 /* Default to short cables on all phys. */ 449 oem->controller.cable_selection_mask = 0; 450 451 /* Initialize all of the port parameter information to narrow ports. */ 452 for (i = 0; i < SCI_MAX_PORTS; i++) 453 oem->ports[i].phy_mask = 0; 454 455 /* Initialize all of the phy parameter information. */ 456 for (i = 0; i < SCI_MAX_PHYS; i++) { 457 /* Default to 3G (i.e. Gen 2). */ 458 user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; 459 460 /* the frequencies cannot be 0 */ 461 user->phys[i].align_insertion_frequency = 0x7f; 462 user->phys[i].in_connection_align_insertion_frequency = 0xff; 463 user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; 464 465 /* Previous Vitesse based expanders had a arbitration issue that 466 * is worked around by having the upper 32-bits of SAS address 467 * with a value greater then the Vitesse company identifier. 468 * Hence, usage of 0x5FCFFFFF. 469 */ 470 oem->phys[i].sas_address.low = 0x1 + ihost->id; 471 oem->phys[i].sas_address.high = 0x5FCFFFFF; 472 } 473 474 user->stp_inactivity_timeout = 5; 475 user->ssp_inactivity_timeout = 5; 476 user->stp_max_occupancy_timeout = 5; 477 user->ssp_max_occupancy_timeout = 20; 478 user->no_outbound_task_timeout = 2; 479} 480 481static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) 482{ 483 struct isci_orom *orom = to_pci_info(pdev)->orom; 484 struct sci_user_parameters sci_user_params; 485 u8 oem_version = ISCI_ROM_VER_1_0; 486 struct isci_host *ihost; 487 struct Scsi_Host *shost; 488 int err, i; 489 490 ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); 491 if (!ihost) 492 return NULL; 493 494 ihost->pdev = pdev; 495 ihost->id = id; 496 spin_lock_init(&ihost->scic_lock); 497 init_waitqueue_head(&ihost->eventq); 498 ihost->sas_ha.dev = &ihost->pdev->dev; 499 ihost->sas_ha.lldd_ha = ihost; 500 tasklet_init(&ihost->completion_tasklet, 501 isci_host_completion_routine, (unsigned long)ihost); 502 503 /* validate module parameters */ 504 /* TODO: kill struct sci_user_parameters and reference directly */ 505 sci_oem_defaults(ihost); 506 isci_user_parameters_get(&sci_user_params); 507 if (sci_user_parameters_set(ihost, &sci_user_params)) { 508 dev_warn(&pdev->dev, 509 "%s: sci_user_parameters_set failed\n", __func__); 510 return NULL; 511 } 512 513 /* sanity check platform (or 'firmware') oem parameters */ 514 if (orom) { 515 if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { 516 dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); 517 return NULL; 518 } 519 ihost->oem_parameters = orom->ctrl[id]; 520 oem_version = orom->hdr.version; 521 } 522 523 /* validate oem parameters (platform, firmware, or built-in defaults) */ 524 if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { 525 dev_warn(&pdev->dev, "oem parameter validation failed\n"); 526 return NULL; 527 } 528 529 for (i = 0; i < SCI_MAX_PORTS; i++) { 530 struct isci_port *iport = &ihost->ports[i]; 531 532 INIT_LIST_HEAD(&iport->remote_dev_list); 533 iport->isci_host = ihost; 534 } 535 536 for (i = 0; i < SCI_MAX_PHYS; i++) 537 isci_phy_init(&ihost->phys[i], ihost, i); 538 539 for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 540 struct isci_remote_device *idev = &ihost->devices[i]; 541 542 INIT_LIST_HEAD(&idev->node); 543 } 544 545 shost = scsi_host_alloc(&isci_sht, sizeof(void *)); 546 if (!shost) 547 return NULL; 548 549 dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " 550 "{%s, %s, %s, %s}\n", 551 (is_cable_select_overridden() ? "* " : ""), ihost->id, 552 lookup_cable_names(decode_cable_selection(ihost, 3)), 553 lookup_cable_names(decode_cable_selection(ihost, 2)), 554 lookup_cable_names(decode_cable_selection(ihost, 1)), 555 lookup_cable_names(decode_cable_selection(ihost, 0))); 556 557 err = isci_host_init(ihost); 558 if (err) 559 goto err_shost; 560 561 SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; 562 ihost->sas_ha.shost = shost; 563 shost->transportt = isci_transport_template; 564 565 shost->max_id = ~0; 566 shost->max_lun = ~0; 567 shost->max_cmd_len = MAX_COMMAND_SIZE; 568 569 /* turn on DIF support */ 570 scsi_host_set_prot(shost, 571 SHOST_DIF_TYPE1_PROTECTION | 572 SHOST_DIF_TYPE2_PROTECTION | 573 SHOST_DIF_TYPE3_PROTECTION); 574 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); 575 576 err = scsi_add_host(shost, &pdev->dev); 577 if (err) 578 goto err_shost; 579 580 err = isci_register_sas_ha(ihost); 581 if (err) 582 goto err_shost_remove; 583 584 return ihost; 585 586 err_shost_remove: 587 scsi_remove_host(shost); 588 err_shost: 589 scsi_host_put(shost); 590 591 return NULL; 592} 593 594static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 595{ 596 struct isci_pci_info *pci_info; 597 int err, i; 598 struct isci_host *isci_host; 599 const struct firmware *fw = NULL; 600 struct isci_orom *orom = NULL; 601 char *source = "(platform)"; 602 603 dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", 604 pdev->revision); 605 606 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); 607 if (!pci_info) 608 return -ENOMEM; 609 pci_set_drvdata(pdev, pci_info); 610 611 if (efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 612 orom = isci_get_efi_var(pdev); 613 614 if (!orom) 615 orom = isci_request_oprom(pdev); 616 617 for (i = 0; orom && i < num_controllers(pdev); i++) { 618 if (sci_oem_parameters_validate(&orom->ctrl[i], 619 orom->hdr.version)) { 620 dev_warn(&pdev->dev, 621 "[%d]: invalid oem parameters detected, falling back to firmware\n", i); 622 orom = NULL; 623 break; 624 } 625 } 626 627 if (!orom) { 628 source = "(firmware)"; 629 orom = isci_request_firmware(pdev, fw); 630 if (!orom) { 631 /* TODO convert this to WARN_TAINT_ONCE once the 632 * orom/efi parameter support is widely available 633 */ 634 dev_warn(&pdev->dev, 635 "Loading user firmware failed, using default " 636 "values\n"); 637 dev_warn(&pdev->dev, 638 "Default OEM configuration being used: 4 " 639 "narrow ports, and default SAS Addresses\n"); 640 } 641 } 642 643 if (orom) 644 dev_info(&pdev->dev, 645 "OEM SAS parameters (version: %u.%u) loaded %s\n", 646 (orom->hdr.version & 0xf0) >> 4, 647 (orom->hdr.version & 0xf), source); 648 649 pci_info->orom = orom; 650 651 err = isci_pci_init(pdev); 652 if (err) 653 return err; 654 655 for (i = 0; i < num_controllers(pdev); i++) { 656 struct isci_host *h = isci_host_alloc(pdev, i); 657 658 if (!h) { 659 err = -ENOMEM; 660 goto err_host_alloc; 661 } 662 pci_info->hosts[i] = h; 663 } 664 665 err = isci_setup_interrupts(pdev); 666 if (err) 667 goto err_host_alloc; 668 669 for_each_isci_host(i, isci_host, pdev) 670 scsi_scan_host(to_shost(isci_host)); 671 672 return 0; 673 674 err_host_alloc: 675 for_each_isci_host(i, isci_host, pdev) 676 isci_unregister(isci_host); 677 return err; 678} 679 680static void isci_pci_remove(struct pci_dev *pdev) 681{ 682 struct isci_host *ihost; 683 int i; 684 685 for_each_isci_host(i, ihost, pdev) { 686 wait_for_start(ihost); 687 isci_unregister(ihost); 688 isci_host_deinit(ihost); 689 } 690} 691 692#ifdef CONFIG_PM_SLEEP 693static int isci_suspend(struct device *dev) 694{ 695 struct pci_dev *pdev = to_pci_dev(dev); 696 struct isci_host *ihost; 697 int i; 698 699 for_each_isci_host(i, ihost, pdev) { 700 sas_suspend_ha(&ihost->sas_ha); 701 isci_host_deinit(ihost); 702 } 703 704 return 0; 705} 706 707static int isci_resume(struct device *dev) 708{ 709 struct pci_dev *pdev = to_pci_dev(dev); 710 struct isci_host *ihost; 711 int i; 712 713 for_each_isci_host(i, ihost, pdev) { 714 sas_prep_resume_ha(&ihost->sas_ha); 715 716 isci_host_init(ihost); 717 isci_host_start(ihost->sas_ha.shost); 718 wait_for_start(ihost); 719 720 sas_resume_ha(&ihost->sas_ha); 721 } 722 723 return 0; 724} 725#endif 726 727static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); 728 729static struct pci_driver isci_pci_driver = { 730 .name = DRV_NAME, 731 .id_table = isci_id_table, 732 .probe = isci_pci_probe, 733 .remove = isci_pci_remove, 734 .driver.pm = &isci_pm_ops, 735}; 736 737static __init int isci_init(void) 738{ 739 int err; 740 741 pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", 742 DRV_NAME, DRV_VERSION); 743 744 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); 745 if (!isci_transport_template) 746 return -ENOMEM; 747 748 err = pci_register_driver(&isci_pci_driver); 749 if (err) 750 sas_release_transport(isci_transport_template); 751 752 return err; 753} 754 755static __exit void isci_exit(void) 756{ 757 pci_unregister_driver(&isci_pci_driver); 758 sas_release_transport(isci_transport_template); 759} 760 761MODULE_LICENSE("Dual BSD/GPL"); 762MODULE_FIRMWARE(ISCI_FW_NAME); 763module_init(isci_init); 764module_exit(isci_exit); 765