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1/*2 * This file is provided under a dual BSD/GPLv2 license. When using or3 * redistributing this file, you may do so under either license.4 *5 * GPL LICENSE SUMMARY6 *7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.8 *9 * This program is free software; you can redistribute it and/or modify10 * it under the terms of version 2 of the GNU General Public License as11 * published by the Free Software Foundation.12 *13 * This program is distributed in the hope that it will be useful, but14 * WITHOUT ANY WARRANTY; without even the implied warranty of15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU16 * General Public License for more details.17 *18 * You should have received a copy of the GNU General Public License19 * along with this program; if not, write to the Free Software20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.21 * The full GNU General Public License is included in this distribution22 * in the file called LICENSE.GPL.23 *24 * BSD LICENSE25 *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 without30 * modification, are permitted provided that the following conditions31 * are met:32 *33 * * Redistributions of source code must retain the above copyright34 * notice, this list of conditions and the following disclaimer.35 * * Redistributions in binary form must reproduce the above copyright36 * notice, this list of conditions and the following disclaimer in37 * the documentation and/or other materials provided with the38 * distribution.39 * * Neither the name of Intel Corporation nor the names of its40 * contributors may be used to endorse or promote products derived41 * from this software without specific prior written permission.42 *43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE53 * 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 70MODULE_VERSION(DRV_VERSION);71 72static struct scsi_transport_template *isci_transport_template;73 74static 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 90MODULE_DEVICE_TABLE(pci, isci_id_table);91 92/* linux isci specific settings */93 94unsigned char no_outbound_task_to = 2;95module_param(no_outbound_task_to, byte, 0);96MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)");97 98u16 ssp_max_occ_to = 20;99module_param(ssp_max_occ_to, ushort, 0);100MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)");101 102u16 stp_max_occ_to = 5;103module_param(stp_max_occ_to, ushort, 0);104MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)");105 106u16 ssp_inactive_to = 5;107module_param(ssp_inactive_to, ushort, 0);108MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)");109 110u16 stp_inactive_to = 5;111module_param(stp_inactive_to, ushort, 0);112MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)");113 114unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED;115module_param(phy_gen, byte, 0);116MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)");117 118unsigned char max_concurr_spinup;119module_param(max_concurr_spinup, byte, 0);120MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup");121 122uint cable_selection_override = CABLE_OVERRIDE_DISABLED;123module_param(cable_selection_override, uint, 0);124 125MODULE_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 130static 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 139static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL);140 141static struct attribute *isci_host_attrs[] = {142 &dev_attr_isci_id.attr,143 NULL144};145 146ATTRIBUTE_GROUPS(isci_host);147 148static const struct attribute_group *isci_sdev_groups[] = {149 &sas_ata_sdev_attr_group,150 NULL151};152 153static const struct scsi_host_template isci_sht = {154 LIBSAS_SHT_BASE155 .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 165static 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 S201******************************************************************************/202 203 204 205/**206 * isci_register_sas_ha() - This method initializes various lldd207 * specific members of the sas_ha struct and calls the libsas208 * sas_register_ha() function.209 * @isci_host: This parameter specifies the lldd specific wrapper for the210 * libsas sas_ha struct.211 *212 * This method returns an error code indicating success or failure. The user213 * should check for possible memory allocation error return otherwise, a zero214 * indicates success.215 */216static 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 252static 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 266static 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 298static int num_controllers(struct pci_dev *pdev)299{300 /* bar size alone can tell us if we are running with a dual controller301 * part, no need to trust revision ids that might be under broken firmware302 * control303 */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 else311 return 1;312}313 314static 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 this322 * 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 else339 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 369static 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 392static 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, then399 * 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 428static 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 that462 * is worked around by having the upper 32-bits of SAS address463 * 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 477static 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 590static 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 the628 * orom/efi parameter support is widely available629 */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 676static 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_SLEEP689static 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 703static 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#endif722 723static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume);724 725static 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 733static __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 751static __exit void isci_exit(void)752{753 pci_unregister_driver(&isci_pci_driver);754 sas_release_transport(isci_transport_template);755}756 757MODULE_DESCRIPTION("Intel(R) C600 Series Chipset SAS Controller driver");758MODULE_LICENSE("Dual BSD/GPL");759MODULE_FIRMWARE(ISCI_FW_NAME);760module_init(isci_init);761module_exit(isci_exit);762