| /* |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| * The full GNU General Public License is included in this distribution |
| * in the file called LICENSE.GPL. |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/firmware.h> |
| #include <linux/efi.h> |
| #include <asm/string.h> |
| #include <scsi/scsi_host.h> |
| #include "host.h" |
| #include "isci.h" |
| #include "task.h" |
| #include "probe_roms.h" |
| |
| #define MAJ 1 |
| #define MIN 2 |
| #define BUILD 0 |
| #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ |
| __stringify(BUILD) |
| |
| MODULE_VERSION(DRV_VERSION); |
| |
| static struct scsi_transport_template *isci_transport_template; |
| |
| static const struct pci_device_id isci_id_table[] = { |
| { PCI_VDEVICE(INTEL, 0x1D61),}, |
| { PCI_VDEVICE(INTEL, 0x1D63),}, |
| { PCI_VDEVICE(INTEL, 0x1D65),}, |
| { PCI_VDEVICE(INTEL, 0x1D67),}, |
| { PCI_VDEVICE(INTEL, 0x1D69),}, |
| { PCI_VDEVICE(INTEL, 0x1D6B),}, |
| { PCI_VDEVICE(INTEL, 0x1D60),}, |
| { PCI_VDEVICE(INTEL, 0x1D62),}, |
| { PCI_VDEVICE(INTEL, 0x1D64),}, |
| { PCI_VDEVICE(INTEL, 0x1D66),}, |
| { PCI_VDEVICE(INTEL, 0x1D68),}, |
| { PCI_VDEVICE(INTEL, 0x1D6A),}, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, isci_id_table); |
| |
| /* linux isci specific settings */ |
| |
| unsigned char no_outbound_task_to = 2; |
| module_param(no_outbound_task_to, byte, 0); |
| MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)"); |
| |
| u16 ssp_max_occ_to = 20; |
| module_param(ssp_max_occ_to, ushort, 0); |
| MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)"); |
| |
| u16 stp_max_occ_to = 5; |
| module_param(stp_max_occ_to, ushort, 0); |
| MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)"); |
| |
| u16 ssp_inactive_to = 5; |
| module_param(ssp_inactive_to, ushort, 0); |
| MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)"); |
| |
| u16 stp_inactive_to = 5; |
| module_param(stp_inactive_to, ushort, 0); |
| MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)"); |
| |
| unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED; |
| module_param(phy_gen, byte, 0); |
| MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)"); |
| |
| unsigned char max_concurr_spinup; |
| module_param(max_concurr_spinup, byte, 0); |
| MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); |
| |
| uint cable_selection_override = CABLE_OVERRIDE_DISABLED; |
| module_param(cable_selection_override, uint, 0); |
| |
| MODULE_PARM_DESC(cable_selection_override, |
| "This field indicates length of the SAS/SATA cable between " |
| "host and device. If any bits > 15 are set (default) " |
| "indicates \"use platform defaults\""); |
| |
| static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev); |
| struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); |
| struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id); |
| } |
| |
| static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL); |
| |
| static struct device_attribute *isci_host_attrs[] = { |
| &dev_attr_isci_id, |
| NULL |
| }; |
| |
| static struct scsi_host_template isci_sht = { |
| |
| .module = THIS_MODULE, |
| .name = DRV_NAME, |
| .proc_name = DRV_NAME, |
| .queuecommand = sas_queuecommand, |
| .dma_need_drain = ata_scsi_dma_need_drain, |
| .target_alloc = sas_target_alloc, |
| .slave_configure = sas_slave_configure, |
| .scan_finished = isci_host_scan_finished, |
| .scan_start = isci_host_start, |
| .change_queue_depth = sas_change_queue_depth, |
| .bios_param = sas_bios_param, |
| .can_queue = ISCI_CAN_QUEUE_VAL, |
| .this_id = -1, |
| .sg_tablesize = SG_ALL, |
| .max_sectors = SCSI_DEFAULT_MAX_SECTORS, |
| .eh_abort_handler = sas_eh_abort_handler, |
| .eh_device_reset_handler = sas_eh_device_reset_handler, |
| .eh_target_reset_handler = sas_eh_target_reset_handler, |
| .target_destroy = sas_target_destroy, |
| .ioctl = sas_ioctl, |
| #ifdef CONFIG_COMPAT |
| .compat_ioctl = sas_ioctl, |
| #endif |
| .shost_attrs = isci_host_attrs, |
| .track_queue_depth = 1, |
| }; |
| |
| static struct sas_domain_function_template isci_transport_ops = { |
| |
| /* The class calls these to notify the LLDD of an event. */ |
| .lldd_port_formed = isci_port_formed, |
| .lldd_port_deformed = isci_port_deformed, |
| |
| /* The class calls these when a device is found or gone. */ |
| .lldd_dev_found = isci_remote_device_found, |
| .lldd_dev_gone = isci_remote_device_gone, |
| |
| .lldd_execute_task = isci_task_execute_task, |
| /* Task Management Functions. Must be called from process context. */ |
| .lldd_abort_task = isci_task_abort_task, |
| .lldd_abort_task_set = isci_task_abort_task_set, |
| .lldd_clear_aca = isci_task_clear_aca, |
| .lldd_clear_task_set = isci_task_clear_task_set, |
| .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, |
| .lldd_lu_reset = isci_task_lu_reset, |
| .lldd_query_task = isci_task_query_task, |
| |
| /* ata recovery called from ata-eh */ |
| .lldd_ata_check_ready = isci_ata_check_ready, |
| |
| /* Port and Adapter management */ |
| .lldd_clear_nexus_port = isci_task_clear_nexus_port, |
| .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, |
| |
| /* Phy management */ |
| .lldd_control_phy = isci_phy_control, |
| |
| /* GPIO support */ |
| .lldd_write_gpio = isci_gpio_write, |
| }; |
| |
| |
| /****************************************************************************** |
| * P R O T E C T E D M E T H O D S |
| ******************************************************************************/ |
| |
| |
| |
| /** |
| * isci_register_sas_ha() - This method initializes various lldd |
| * specific members of the sas_ha struct and calls the libsas |
| * sas_register_ha() function. |
| * @isci_host: This parameter specifies the lldd specific wrapper for the |
| * libsas sas_ha struct. |
| * |
| * This method returns an error code indicating success or failure. The user |
| * should check for possible memory allocation error return otherwise, a zero |
| * indicates success. |
| */ |
| static int isci_register_sas_ha(struct isci_host *isci_host) |
| { |
| int i; |
| struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); |
| struct asd_sas_phy **sas_phys; |
| struct asd_sas_port **sas_ports; |
| |
| sas_phys = devm_kcalloc(&isci_host->pdev->dev, |
| SCI_MAX_PHYS, sizeof(void *), |
| GFP_KERNEL); |
| if (!sas_phys) |
| return -ENOMEM; |
| |
| sas_ports = devm_kcalloc(&isci_host->pdev->dev, |
| SCI_MAX_PORTS, sizeof(void *), |
| GFP_KERNEL); |
| if (!sas_ports) |
| return -ENOMEM; |
| |
| sas_ha->sas_ha_name = DRV_NAME; |
| sas_ha->lldd_module = THIS_MODULE; |
| sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; |
| |
| for (i = 0; i < SCI_MAX_PHYS; i++) { |
| sas_phys[i] = &isci_host->phys[i].sas_phy; |
| sas_ports[i] = &isci_host->sas_ports[i]; |
| } |
| |
| sas_ha->sas_phy = sas_phys; |
| sas_ha->sas_port = sas_ports; |
| sas_ha->num_phys = SCI_MAX_PHYS; |
| |
| sas_ha->strict_wide_ports = 1; |
| |
| sas_register_ha(sas_ha); |
| |
| return 0; |
| } |
| |
| static void isci_unregister(struct isci_host *isci_host) |
| { |
| struct Scsi_Host *shost; |
| |
| if (!isci_host) |
| return; |
| |
| shost = to_shost(isci_host); |
| sas_unregister_ha(&isci_host->sas_ha); |
| |
| sas_remove_host(shost); |
| scsi_host_put(shost); |
| } |
| |
| static int isci_pci_init(struct pci_dev *pdev) |
| { |
| int err, bar_num, bar_mask = 0; |
| void __iomem * const *iomap; |
| |
| err = pcim_enable_device(pdev); |
| if (err) { |
| dev_err(&pdev->dev, |
| "failed enable PCI device %s!\n", |
| pci_name(pdev)); |
| return err; |
| } |
| |
| for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) |
| bar_mask |= 1 << (bar_num * 2); |
| |
| err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); |
| if (err) |
| return err; |
| |
| iomap = pcim_iomap_table(pdev); |
| if (!iomap) |
| return -ENOMEM; |
| |
| pci_set_master(pdev); |
| |
| err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
| if (err) |
| err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
| return err; |
| } |
| |
| static int num_controllers(struct pci_dev *pdev) |
| { |
| /* bar size alone can tell us if we are running with a dual controller |
| * part, no need to trust revision ids that might be under broken firmware |
| * control |
| */ |
| resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); |
| resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); |
| |
| if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && |
| smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) |
| return SCI_MAX_CONTROLLERS; |
| else |
| return 1; |
| } |
| |
| static int isci_setup_interrupts(struct pci_dev *pdev) |
| { |
| int err, i, num_msix; |
| struct isci_host *ihost; |
| struct isci_pci_info *pci_info = to_pci_info(pdev); |
| |
| /* |
| * Determine the number of vectors associated with this |
| * PCI function. |
| */ |
| num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; |
| |
| err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX); |
| if (err < 0) |
| goto intx; |
| |
| for (i = 0; i < num_msix; i++) { |
| int id = i / SCI_NUM_MSI_X_INT; |
| irq_handler_t isr; |
| |
| ihost = pci_info->hosts[id]; |
| /* odd numbered vectors are error interrupts */ |
| if (i & 1) |
| isr = isci_error_isr; |
| else |
| isr = isci_msix_isr; |
| |
| err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i), |
| isr, 0, DRV_NAME"-msix", ihost); |
| if (!err) |
| continue; |
| |
| dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); |
| while (i--) { |
| id = i / SCI_NUM_MSI_X_INT; |
| ihost = pci_info->hosts[id]; |
| devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), |
| ihost); |
| } |
| pci_free_irq_vectors(pdev); |
| goto intx; |
| } |
| return 0; |
| |
| intx: |
| for_each_isci_host(i, ihost, pdev) { |
| err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0), |
| isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", |
| ihost); |
| if (err) |
| break; |
| } |
| return err; |
| } |
| |
| static void isci_user_parameters_get(struct sci_user_parameters *u) |
| { |
| int i; |
| |
| for (i = 0; i < SCI_MAX_PHYS; i++) { |
| struct sci_phy_user_params *u_phy = &u->phys[i]; |
| |
| u_phy->max_speed_generation = phy_gen; |
| |
| /* we are not exporting these for now */ |
| u_phy->align_insertion_frequency = 0x7f; |
| u_phy->in_connection_align_insertion_frequency = 0xff; |
| u_phy->notify_enable_spin_up_insertion_frequency = 0x33; |
| } |
| |
| u->stp_inactivity_timeout = stp_inactive_to; |
| u->ssp_inactivity_timeout = ssp_inactive_to; |
| u->stp_max_occupancy_timeout = stp_max_occ_to; |
| u->ssp_max_occupancy_timeout = ssp_max_occ_to; |
| u->no_outbound_task_timeout = no_outbound_task_to; |
| u->max_concurr_spinup = max_concurr_spinup; |
| } |
| |
| static enum sci_status sci_user_parameters_set(struct isci_host *ihost, |
| struct sci_user_parameters *sci_parms) |
| { |
| u16 index; |
| |
| /* |
| * Validate the user parameters. If they are not legal, then |
| * return a failure. |
| */ |
| for (index = 0; index < SCI_MAX_PHYS; index++) { |
| struct sci_phy_user_params *u; |
| |
| u = &sci_parms->phys[index]; |
| |
| if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && |
| (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) |
| return SCI_FAILURE_INVALID_PARAMETER_VALUE; |
| |
| if ((u->in_connection_align_insertion_frequency < 3) || |
| (u->align_insertion_frequency == 0) || |
| (u->notify_enable_spin_up_insertion_frequency == 0)) |
| return SCI_FAILURE_INVALID_PARAMETER_VALUE; |
| } |
| |
| if ((sci_parms->stp_inactivity_timeout == 0) || |
| (sci_parms->ssp_inactivity_timeout == 0) || |
| (sci_parms->stp_max_occupancy_timeout == 0) || |
| (sci_parms->ssp_max_occupancy_timeout == 0) || |
| (sci_parms->no_outbound_task_timeout == 0)) |
| return SCI_FAILURE_INVALID_PARAMETER_VALUE; |
| |
| memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); |
| |
| return SCI_SUCCESS; |
| } |
| |
| static void sci_oem_defaults(struct isci_host *ihost) |
| { |
| /* these defaults are overridden by the platform / firmware */ |
| struct sci_user_parameters *user = &ihost->user_parameters; |
| struct sci_oem_params *oem = &ihost->oem_parameters; |
| int i; |
| |
| /* Default to APC mode. */ |
| oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; |
| |
| /* Default to APC mode. */ |
| oem->controller.max_concurr_spin_up = 1; |
| |
| /* Default to no SSC operation. */ |
| oem->controller.do_enable_ssc = false; |
| |
| /* Default to short cables on all phys. */ |
| oem->controller.cable_selection_mask = 0; |
| |
| /* Initialize all of the port parameter information to narrow ports. */ |
| for (i = 0; i < SCI_MAX_PORTS; i++) |
| oem->ports[i].phy_mask = 0; |
| |
| /* Initialize all of the phy parameter information. */ |
| for (i = 0; i < SCI_MAX_PHYS; i++) { |
| /* Default to 3G (i.e. Gen 2). */ |
| user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; |
| |
| /* the frequencies cannot be 0 */ |
| user->phys[i].align_insertion_frequency = 0x7f; |
| user->phys[i].in_connection_align_insertion_frequency = 0xff; |
| user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; |
| |
| /* Previous Vitesse based expanders had a arbitration issue that |
| * is worked around by having the upper 32-bits of SAS address |
| * with a value greater then the Vitesse company identifier. |
| * Hence, usage of 0x5FCFFFFF. |
| */ |
| oem->phys[i].sas_address.low = 0x1 + ihost->id; |
| oem->phys[i].sas_address.high = 0x5FCFFFFF; |
| } |
| |
| user->stp_inactivity_timeout = 5; |
| user->ssp_inactivity_timeout = 5; |
| user->stp_max_occupancy_timeout = 5; |
| user->ssp_max_occupancy_timeout = 20; |
| user->no_outbound_task_timeout = 2; |
| } |
| |
| static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) |
| { |
| struct isci_orom *orom = to_pci_info(pdev)->orom; |
| struct sci_user_parameters sci_user_params; |
| u8 oem_version = ISCI_ROM_VER_1_0; |
| struct isci_host *ihost; |
| struct Scsi_Host *shost; |
| int err, i; |
| |
| ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); |
| if (!ihost) |
| return NULL; |
| |
| ihost->pdev = pdev; |
| ihost->id = id; |
| spin_lock_init(&ihost->scic_lock); |
| init_waitqueue_head(&ihost->eventq); |
| ihost->sas_ha.dev = &ihost->pdev->dev; |
| ihost->sas_ha.lldd_ha = ihost; |
| tasklet_init(&ihost->completion_tasklet, |
| isci_host_completion_routine, (unsigned long)ihost); |
| |
| /* validate module parameters */ |
| /* TODO: kill struct sci_user_parameters and reference directly */ |
| sci_oem_defaults(ihost); |
| isci_user_parameters_get(&sci_user_params); |
| if (sci_user_parameters_set(ihost, &sci_user_params)) { |
| dev_warn(&pdev->dev, |
| "%s: sci_user_parameters_set failed\n", __func__); |
| return NULL; |
| } |
| |
| /* sanity check platform (or 'firmware') oem parameters */ |
| if (orom) { |
| if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { |
| dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); |
| return NULL; |
| } |
| ihost->oem_parameters = orom->ctrl[id]; |
| oem_version = orom->hdr.version; |
| } |
| |
| /* validate oem parameters (platform, firmware, or built-in defaults) */ |
| if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { |
| dev_warn(&pdev->dev, "oem parameter validation failed\n"); |
| return NULL; |
| } |
| |
| for (i = 0; i < SCI_MAX_PORTS; i++) { |
| struct isci_port *iport = &ihost->ports[i]; |
| |
| INIT_LIST_HEAD(&iport->remote_dev_list); |
| iport->isci_host = ihost; |
| } |
| |
| for (i = 0; i < SCI_MAX_PHYS; i++) |
| isci_phy_init(&ihost->phys[i], ihost, i); |
| |
| for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { |
| struct isci_remote_device *idev = &ihost->devices[i]; |
| |
| INIT_LIST_HEAD(&idev->node); |
| } |
| |
| shost = scsi_host_alloc(&isci_sht, sizeof(void *)); |
| if (!shost) |
| return NULL; |
| |
| dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " |
| "{%s, %s, %s, %s}\n", |
| (is_cable_select_overridden() ? "* " : ""), ihost->id, |
| lookup_cable_names(decode_cable_selection(ihost, 3)), |
| lookup_cable_names(decode_cable_selection(ihost, 2)), |
| lookup_cable_names(decode_cable_selection(ihost, 1)), |
| lookup_cable_names(decode_cable_selection(ihost, 0))); |
| |
| err = isci_host_init(ihost); |
| if (err) |
| goto err_shost; |
| |
| SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; |
| ihost->sas_ha.core.shost = shost; |
| shost->transportt = isci_transport_template; |
| |
| shost->max_id = ~0; |
| shost->max_lun = ~0; |
| shost->max_cmd_len = MAX_COMMAND_SIZE; |
| |
| /* turn on DIF support */ |
| scsi_host_set_prot(shost, |
| SHOST_DIF_TYPE1_PROTECTION | |
| SHOST_DIF_TYPE2_PROTECTION | |
| SHOST_DIF_TYPE3_PROTECTION); |
| scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); |
| |
| err = scsi_add_host(shost, &pdev->dev); |
| if (err) |
| goto err_shost; |
| |
| err = isci_register_sas_ha(ihost); |
| if (err) |
| goto err_shost_remove; |
| |
| return ihost; |
| |
| err_shost_remove: |
| scsi_remove_host(shost); |
| err_shost: |
| scsi_host_put(shost); |
| |
| return NULL; |
| } |
| |
| static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| { |
| struct isci_pci_info *pci_info; |
| int err, i; |
| struct isci_host *isci_host; |
| const struct firmware *fw = NULL; |
| struct isci_orom *orom = NULL; |
| char *source = "(platform)"; |
| |
| dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", |
| pdev->revision); |
| |
| pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); |
| if (!pci_info) |
| return -ENOMEM; |
| pci_set_drvdata(pdev, pci_info); |
| |
| if (efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) |
| orom = isci_get_efi_var(pdev); |
| |
| if (!orom) |
| orom = isci_request_oprom(pdev); |
| |
| for (i = 0; orom && i < num_controllers(pdev); i++) { |
| if (sci_oem_parameters_validate(&orom->ctrl[i], |
| orom->hdr.version)) { |
| dev_warn(&pdev->dev, |
| "[%d]: invalid oem parameters detected, falling back to firmware\n", i); |
| orom = NULL; |
| break; |
| } |
| } |
| |
| if (!orom) { |
| source = "(firmware)"; |
| orom = isci_request_firmware(pdev, fw); |
| if (!orom) { |
| /* TODO convert this to WARN_TAINT_ONCE once the |
| * orom/efi parameter support is widely available |
| */ |
| dev_warn(&pdev->dev, |
| "Loading user firmware failed, using default " |
| "values\n"); |
| dev_warn(&pdev->dev, |
| "Default OEM configuration being used: 4 " |
| "narrow ports, and default SAS Addresses\n"); |
| } |
| } |
| |
| if (orom) |
| dev_info(&pdev->dev, |
| "OEM SAS parameters (version: %u.%u) loaded %s\n", |
| (orom->hdr.version & 0xf0) >> 4, |
| (orom->hdr.version & 0xf), source); |
| |
| pci_info->orom = orom; |
| |
| err = isci_pci_init(pdev); |
| if (err) |
| return err; |
| |
| for (i = 0; i < num_controllers(pdev); i++) { |
| struct isci_host *h = isci_host_alloc(pdev, i); |
| |
| if (!h) { |
| err = -ENOMEM; |
| goto err_host_alloc; |
| } |
| pci_info->hosts[i] = h; |
| } |
| |
| err = isci_setup_interrupts(pdev); |
| if (err) |
| goto err_host_alloc; |
| |
| for_each_isci_host(i, isci_host, pdev) |
| scsi_scan_host(to_shost(isci_host)); |
| |
| return 0; |
| |
| err_host_alloc: |
| for_each_isci_host(i, isci_host, pdev) |
| isci_unregister(isci_host); |
| return err; |
| } |
| |
| static void isci_pci_remove(struct pci_dev *pdev) |
| { |
| struct isci_host *ihost; |
| int i; |
| |
| for_each_isci_host(i, ihost, pdev) { |
| wait_for_start(ihost); |
| isci_unregister(ihost); |
| isci_host_deinit(ihost); |
| } |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int isci_suspend(struct device *dev) |
| { |
| struct pci_dev *pdev = to_pci_dev(dev); |
| struct isci_host *ihost; |
| int i; |
| |
| for_each_isci_host(i, ihost, pdev) { |
| sas_suspend_ha(&ihost->sas_ha); |
| isci_host_deinit(ihost); |
| } |
| |
| pci_save_state(pdev); |
| pci_disable_device(pdev); |
| pci_set_power_state(pdev, PCI_D3hot); |
| |
| return 0; |
| } |
| |
| static int isci_resume(struct device *dev) |
| { |
| struct pci_dev *pdev = to_pci_dev(dev); |
| struct isci_host *ihost; |
| int rc, i; |
| |
| pci_set_power_state(pdev, PCI_D0); |
| pci_restore_state(pdev); |
| |
| rc = pcim_enable_device(pdev); |
| if (rc) { |
| dev_err(&pdev->dev, |
| "enabling device failure after resume(%d)\n", rc); |
| return rc; |
| } |
| |
| pci_set_master(pdev); |
| |
| for_each_isci_host(i, ihost, pdev) { |
| sas_prep_resume_ha(&ihost->sas_ha); |
| |
| isci_host_init(ihost); |
| isci_host_start(ihost->sas_ha.core.shost); |
| wait_for_start(ihost); |
| |
| sas_resume_ha(&ihost->sas_ha); |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); |
| |
| static struct pci_driver isci_pci_driver = { |
| .name = DRV_NAME, |
| .id_table = isci_id_table, |
| .probe = isci_pci_probe, |
| .remove = isci_pci_remove, |
| .driver.pm = &isci_pm_ops, |
| }; |
| |
| static __init int isci_init(void) |
| { |
| int err; |
| |
| pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", |
| DRV_NAME, DRV_VERSION); |
| |
| isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); |
| if (!isci_transport_template) |
| return -ENOMEM; |
| |
| err = pci_register_driver(&isci_pci_driver); |
| if (err) |
| sas_release_transport(isci_transport_template); |
| |
| return err; |
| } |
| |
| static __exit void isci_exit(void) |
| { |
| pci_unregister_driver(&isci_pci_driver); |
| sas_release_transport(isci_transport_template); |
| } |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_FIRMWARE(ISCI_FW_NAME); |
| module_init(isci_init); |
| module_exit(isci_exit); |