/* * 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 #include #include #include #include #include #include "isci.h" #include "task.h" #include "sci_controller_constants.h" #include "scic_remote_device.h" #include "sci_environment.h" #include "probe_roms.h" static struct scsi_transport_template *isci_transport_template; static DEFINE_PCI_DEVICE_TABLE(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),}, {} }; struct isci_firmware *isci_firmware; static int __devinit isci_pci_probe( struct pci_dev *pdev, const struct pci_device_id *device_id_p); static void __devexit isci_pci_remove(struct pci_dev *pdev); MODULE_DEVICE_TABLE(pci, isci_id_table); static struct pci_driver isci_pci_driver = { .name = DRV_NAME, .id_table = isci_id_table, .probe = isci_pci_probe, .remove = __devexit_p(isci_pci_remove), }; /* linux isci specific settings */ #if defined(CONFIG_PBG_HBA_A0) int isci_si_rev = ISCI_SI_REVA0; #elif defined(CONFIG_PBG_HBA_A2) int isci_si_rev = ISCI_SI_REVA2; #else int isci_si_rev = ISCI_SI_REVB0; #endif module_param(isci_si_rev, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(isci_si_rev, "override default si rev (0: A0 1: A2 2: B0)"); static struct scsi_host_template isci_sht = { .module = THIS_MODULE, .name = DRV_NAME, .proc_name = DRV_NAME, .queuecommand = sas_queuecommand, .target_alloc = sas_target_alloc, .slave_configure = sas_slave_configure, .slave_destroy = sas_slave_destroy, .scan_finished = isci_host_scan_finished, .scan_start = isci_host_scan_start, .change_queue_depth = sas_change_queue_depth, .change_queue_type = sas_change_queue_type, .bios_param = sas_bios_param, .can_queue = ISCI_CAN_QUEUE_VAL, .cmd_per_lun = 1, .this_id = -1, .sg_tablesize = SG_ALL, .max_sectors = SCSI_DEFAULT_MAX_SECTORS, .use_clustering = ENABLE_CLUSTERING, .eh_device_reset_handler = sas_eh_device_reset_handler, .eh_bus_reset_handler = isci_bus_reset_handler, .slave_alloc = sas_slave_alloc, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, }; 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, /* 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, }; /****************************************************************************** * 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 sucess 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_kzalloc(&isci_host->pdev->dev, SCI_MAX_PHYS * sizeof(void *), GFP_KERNEL); if (!sas_phys) return -ENOMEM; sas_ports = devm_kzalloc(&isci_host->pdev->dev, SCI_MAX_PORTS * sizeof(void *), GFP_KERNEL); if (!sas_ports) return -ENOMEM; /*----------------- Libsas Initialization Stuff---------------------- * Set various fields in the sas_ha struct: */ sas_ha->sas_ha_name = DRV_NAME; sas_ha->lldd_module = THIS_MODULE; sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; /* set the array of phy and port structs. */ 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->lldd_queue_size = ISCI_CAN_QUEUE_VAL; sas_ha->lldd_max_execute_num = 1; sas_ha->strict_wide_ports = 1; sas_register_ha(sas_ha); return 0; } 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 void isci_unregister(struct isci_host *isci_host) { struct Scsi_Host *shost; if (!isci_host) return; shost = isci_host->shost; device_remove_file(&shost->shost_dev, &dev_attr_isci_id); sas_unregister_ha(&isci_host->sas_ha); sas_remove_host(isci_host->shost); scsi_remove_host(isci_host->shost); scsi_host_put(isci_host->shost); } static int __devinit isci_pci_init(struct pci_dev *pdev) { int err, bar_num, bar_mask; 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 = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); if (err) { err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) return err; } err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); if (err) { err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) return err; } return 0; } 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_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; for (i = 0; i < num_msix; i++) pci_info->msix_entries[i].entry = i; err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix); if (err) goto intx; for (i = 0; i < num_msix; i++) { int id = i / SCI_NUM_MSI_X_INT; struct msix_entry *msix = &pci_info->msix_entries[i]; struct isci_host *isci_host = pci_info->hosts[id]; irq_handler_t isr; /* odd numbered vectors are error interrupts */ if (i & 1) isr = isci_error_isr; else isr = isci_msix_isr; BUG_ON(!isci_host); err = devm_request_irq(&pdev->dev, msix->vector, isr, 0, DRV_NAME"-msix", isci_host); if (!err) continue; dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); while (i--) { id = i / SCI_NUM_MSI_X_INT; isci_host = pci_info->hosts[id]; msix = &pci_info->msix_entries[i]; devm_free_irq(&pdev->dev, msix->vector, isci_host); } pci_disable_msix(pdev); goto intx; } return 0; intx: err = devm_request_irq(&pdev->dev, pdev->irq, isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", pdev); return err; } static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) { struct isci_host *isci_host; struct Scsi_Host *shost; int err; isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host) + SCI_MAX_REMOTE_DEVICES * (sizeof(struct isci_remote_device) + scic_remote_device_get_object_size()), GFP_KERNEL); if (!isci_host) return NULL; isci_host->pdev = pdev; isci_host->id = id; shost = scsi_host_alloc(&isci_sht, sizeof(void *)); if (!shost) return NULL; isci_host->shost = shost; err = isci_host_init(isci_host); if (err) goto err_shost; SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha; isci_host->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; err = scsi_add_host(shost, &pdev->dev); if (err) goto err_shost; err = isci_register_sas_ha(isci_host); if (err) goto err_shost_remove; err = device_create_file(&shost->shost_dev, &dev_attr_isci_id); if (err) goto err_unregister_ha; return isci_host; err_unregister_ha: sas_unregister_ha(&(isci_host->sas_ha)); err_shost_remove: scsi_remove_host(shost); err_shost: scsi_host_put(shost); return NULL; } static void check_si_rev(struct pci_dev *pdev) { if (num_controllers(pdev) > 1) isci_si_rev = ISCI_SI_REVB0; else { switch (pdev->revision) { case 0: case 1: /* if the id is ambiguous don't update isci_si_rev */ break; case 3: isci_si_rev = ISCI_SI_REVA2; break; default: case 4: isci_si_rev = ISCI_SI_REVB0; break; } } dev_info(&pdev->dev, "driver configured for %s silicon (rev: %d)\n", isci_si_rev == ISCI_SI_REVA0 ? "A0" : isci_si_rev == ISCI_SI_REVA2 ? "A2" : "B0", pdev->revision); } static int __devinit 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; check_si_rev(pdev); pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); if (!pci_info) return -ENOMEM; pci_set_drvdata(pdev, pci_info); if (efi_enabled) { /* do EFI parsing here */ orom = NULL; } else orom = isci_request_oprom(pdev); if (!orom) { 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, "sas parameters (version: %#x) loaded\n", orom->hdr.version); 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(isci_host->shost); return 0; err_host_alloc: for_each_isci_host(i, isci_host, pdev) isci_unregister(isci_host); return err; } static void __devexit isci_pci_remove(struct pci_dev *pdev) { struct isci_host *isci_host; int i; for_each_isci_host(i, isci_host, pdev) { isci_unregister(isci_host); isci_host_deinit(isci_host); scic_controller_disable_interrupts(isci_host->core_controller); } } static __init int isci_init(void) { int err; pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME); 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);