diff options
Diffstat (limited to 'drivers/scsi/isci/init.c')
| -rw-r--r-- | drivers/scsi/isci/init.c | 777 |
1 files changed, 777 insertions, 0 deletions
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c new file mode 100644 index 0000000000..6277162a02 --- /dev/null +++ b/drivers/scsi/isci/init.c @@ -0,0 +1,777 @@ +/* + * 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 attribute *isci_host_attrs[] = { + &dev_attr_isci_id.attr, + NULL +}; + +ATTRIBUTE_GROUPS(isci_host); + +static const 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, + .slave_alloc = sas_slave_alloc, + .target_destroy = sas_target_destroy, + .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif + .shost_groups = isci_host_groups, + .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_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->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; + + return sas_register_ha(sas_ha); +} + +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.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); + } + + return 0; +} + +static int isci_resume(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_prep_resume_ha(&ihost->sas_ha); + + isci_host_init(ihost); + isci_host_start(ihost->sas_ha.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); |