612 lines
16 KiB
C
612 lines
16 KiB
C
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/*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <asm/string.h>
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#include "isci.h"
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#include "task.h"
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#include "sci_controller_constants.h"
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#include "scic_remote_device.h"
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#include "sci_environment.h"
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static struct scsi_transport_template *isci_transport_template;
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struct kmem_cache *isci_kmem_cache;
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static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = {
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{ PCI_VDEVICE(INTEL, 0x1D61),},
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{ PCI_VDEVICE(INTEL, 0x1D63),},
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{ PCI_VDEVICE(INTEL, 0x1D65),},
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{ PCI_VDEVICE(INTEL, 0x1D67),},
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{ PCI_VDEVICE(INTEL, 0x1D69),},
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{ PCI_VDEVICE(INTEL, 0x1D6B),},
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{ PCI_VDEVICE(INTEL, 0x1D60),},
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{ PCI_VDEVICE(INTEL, 0x1D62),},
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{ PCI_VDEVICE(INTEL, 0x1D64),},
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{ PCI_VDEVICE(INTEL, 0x1D66),},
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{ PCI_VDEVICE(INTEL, 0x1D68),},
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{ PCI_VDEVICE(INTEL, 0x1D6A),},
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{}
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};
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static int __devinit isci_pci_probe(
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struct pci_dev *pdev,
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const struct pci_device_id *device_id_p);
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static void __devexit isci_pci_remove(struct pci_dev *pdev);
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MODULE_DEVICE_TABLE(pci, isci_id_table);
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static struct pci_driver isci_pci_driver = {
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.name = DRV_NAME,
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.id_table = isci_id_table,
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.probe = isci_pci_probe,
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.remove = __devexit_p(isci_pci_remove),
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};
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/* linux isci specific settings */
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#if defined(CONFIG_PBG_HBA_A0)
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int isci_si_rev = ISCI_SI_REVA0;
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#elif defined(CONFIG_PBG_HBA_A2)
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int isci_si_rev = ISCI_SI_REVA2;
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#else
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int isci_si_rev = ISCI_SI_REVB0;
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#endif
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module_param(isci_si_rev, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(isci_si_rev, "override default si rev (0: A0 1: A2 2: B0)");
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static struct scsi_host_template isci_sht = {
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.module = THIS_MODULE,
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.name = DRV_NAME,
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.queuecommand = sas_queuecommand,
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.target_alloc = sas_target_alloc,
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.slave_configure = sas_slave_configure,
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.slave_destroy = sas_slave_destroy,
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.scan_finished = isci_host_scan_finished,
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.scan_start = isci_host_scan_start,
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.change_queue_depth = sas_change_queue_depth,
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.change_queue_type = sas_change_queue_type,
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.bios_param = sas_bios_param,
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.can_queue = ISCI_CAN_QUEUE_VAL,
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.cmd_per_lun = 1,
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.this_id = -1,
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.sg_tablesize = SG_ALL,
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.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
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.use_clustering = ENABLE_CLUSTERING,
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.eh_device_reset_handler = sas_eh_device_reset_handler,
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.eh_bus_reset_handler = isci_bus_reset_handler,
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.slave_alloc = sas_slave_alloc,
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.target_destroy = sas_target_destroy,
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.ioctl = sas_ioctl,
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};
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static struct sas_domain_function_template isci_transport_ops = {
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/* The class calls these to notify the LLDD of an event. */
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.lldd_port_formed = isci_port_formed,
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.lldd_port_deformed = isci_port_deformed,
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/* The class calls these when a device is found or gone. */
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.lldd_dev_found = isci_remote_device_found,
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.lldd_dev_gone = isci_remote_device_gone,
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.lldd_execute_task = isci_task_execute_task,
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/* Task Management Functions. Must be called from process context. */
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.lldd_abort_task = isci_task_abort_task,
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.lldd_abort_task_set = isci_task_abort_task_set,
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.lldd_clear_aca = isci_task_clear_aca,
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.lldd_clear_task_set = isci_task_clear_task_set,
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.lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset,
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.lldd_lu_reset = isci_task_lu_reset,
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.lldd_query_task = isci_task_query_task,
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/* Port and Adapter management */
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.lldd_clear_nexus_port = isci_task_clear_nexus_port,
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.lldd_clear_nexus_ha = isci_task_clear_nexus_ha,
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/* Phy management */
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.lldd_control_phy = isci_phy_control,
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};
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/******************************************************************************
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* P R O T E C T E D M E T H O D S
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******************************************************************************/
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/**
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* isci_register_sas_ha() - This method initializes various lldd
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* specific members of the sas_ha struct and calls the libsas
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* sas_register_ha() function.
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* @isci_host: This parameter specifies the lldd specific wrapper for the
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* libsas sas_ha struct.
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*
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* This method returns an error code indicating sucess or failure. The user
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* should check for possible memory allocation error return otherwise, a zero
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* indicates success.
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*/
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static int isci_register_sas_ha(struct isci_host *isci_host)
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{
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int i;
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struct sas_ha_struct *sas_ha = &(isci_host->sas_ha);
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struct asd_sas_phy **sas_phys;
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struct asd_sas_port **sas_ports;
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sas_phys = devm_kzalloc(&isci_host->pdev->dev,
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SCI_MAX_PHYS * sizeof(void *),
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GFP_KERNEL);
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if (!sas_phys)
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return -ENOMEM;
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sas_ports = devm_kzalloc(&isci_host->pdev->dev,
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SCI_MAX_PORTS * sizeof(void *),
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GFP_KERNEL);
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if (!sas_ports)
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return -ENOMEM;
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/*----------------- Libsas Initialization Stuff----------------------
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* Set various fields in the sas_ha struct:
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*/
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sas_ha->sas_ha_name = DRV_NAME;
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sas_ha->lldd_module = THIS_MODULE;
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sas_ha->sas_addr = &(isci_host->sas_addr[0]);
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/* set the array of phy and port structs. */
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for (i = 0; i < SCI_MAX_PHYS; i++) {
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sas_phys[i] = &(isci_host->phys[i].sas_phy);
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sas_ports[i] = &(isci_host->sas_ports[i]);
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}
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sas_ha->sas_phy = sas_phys;
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sas_ha->sas_port = sas_ports;
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sas_ha->num_phys = SCI_MAX_PHYS;
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sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL;
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sas_ha->lldd_max_execute_num = 1;
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sas_ha->strict_wide_ports = 1;
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sas_register_ha(sas_ha);
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return 0;
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}
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static void isci_unregister_sas_ha(struct isci_host *isci_host)
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{
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if (!isci_host)
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return;
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sas_unregister_ha(&(isci_host->sas_ha));
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sas_remove_host(isci_host->shost);
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scsi_remove_host(isci_host->shost);
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scsi_host_put(isci_host->shost);
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}
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static int __devinit isci_pci_init(struct pci_dev *pdev)
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{
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int err, bar_num, bar_mask;
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void __iomem * const *iomap;
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err = pcim_enable_device(pdev);
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if (err) {
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dev_err(&pdev->dev,
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"failed enable PCI device %s!\n",
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pci_name(pdev));
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return err;
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}
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for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++)
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bar_mask |= 1 << (bar_num * 2);
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err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME);
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if (err)
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return err;
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iomap = pcim_iomap_table(pdev);
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if (!iomap)
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return -ENOMEM;
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pci_set_master(pdev);
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err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
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if (err) {
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err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
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if (err)
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return err;
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}
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err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
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if (err) {
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err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
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if (err)
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return err;
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}
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return 0;
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}
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static struct isci_host *isci_host_by_id(struct pci_dev *pdev, int id)
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{
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struct isci_host *h;
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for_each_isci_host(h, pdev)
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if (h->id == id)
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return h;
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return NULL;
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}
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static int num_controllers(struct pci_dev *pdev)
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{
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/* bar size alone can tell us if we are running with a dual controller
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* part, no need to trust revision ids that might be under broken firmware
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* control
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*/
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resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2);
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resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2);
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if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS &&
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smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS)
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return SCI_MAX_CONTROLLERS;
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else
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return 1;
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}
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static int isci_setup_interrupts(struct pci_dev *pdev)
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{
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int err, i, num_msix;
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struct isci_pci_info *pci_info = to_pci_info(pdev);
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/*
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* Determine the number of vectors associated with this
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* PCI function.
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*/
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num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT;
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for (i = 0; i < num_msix; i++)
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pci_info->msix_entries[i].entry = i;
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err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix);
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if (err)
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goto intx;
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for (i = 0; i < num_msix; i++) {
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int id = i / SCI_NUM_MSI_X_INT;
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struct msix_entry *msix = &pci_info->msix_entries[i];
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struct isci_host *isci_host = isci_host_by_id(pdev, id);
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BUG_ON(!isci_host);
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/* @todo: need to handle error case. */
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err = devm_request_irq(&pdev->dev, msix->vector, isci_isr, 0,
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DRV_NAME"-msix", isci_host);
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if (!err)
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continue;
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dev_info(&pdev->dev, "msix setup failed falling back to intx\n");
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while (i--) {
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id = i / SCI_NUM_MSI_X_INT;
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isci_host = isci_host_by_id(pdev, id);
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msix = &pci_info->msix_entries[i];
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|
|
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_legacy_isr,
|
||
|
|
IRQF_SHARED, DRV_NAME"-intx", pdev);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* isci_parse_oem_parameters() - This method will take OEM parameters
|
||
|
|
* from the module init parameters and copy them to oem_params. This will
|
||
|
|
* only copy values that are not set to the module parameter default values
|
||
|
|
* @oem_parameters: This parameter specifies the controller default OEM
|
||
|
|
* parameters. It is expected that this has been initialized to the default
|
||
|
|
* parameters for the controller
|
||
|
|
*
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
enum sci_status isci_parse_oem_parameters(union scic_oem_parameters *oem_params,
|
||
|
|
int scu_index,
|
||
|
|
struct isci_firmware *fw)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
/* check for valid inputs */
|
||
|
|
if (!(scu_index >= 0
|
||
|
|
&& scu_index < SCI_MAX_CONTROLLERS
|
||
|
|
&& oem_params != NULL)) {
|
||
|
|
return SCI_FAILURE;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < SCI_MAX_PHYS; i++) {
|
||
|
|
int array_idx = i + (SCI_MAX_PHYS * scu_index);
|
||
|
|
u64 sas_addr = fw->sas_addrs[array_idx];
|
||
|
|
|
||
|
|
if (sas_addr != 0) {
|
||
|
|
oem_params->sds1.phys[i].sas_address.low =
|
||
|
|
(u32)(sas_addr & 0xffffffff);
|
||
|
|
oem_params->sds1.phys[i].sas_address.high =
|
||
|
|
(u32)((sas_addr >> 32) & 0xffffffff);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < SCI_MAX_PORTS; i++) {
|
||
|
|
int array_idx = i + (SCI_MAX_PORTS * scu_index);
|
||
|
|
u32 pmask = fw->phy_masks[array_idx];
|
||
|
|
|
||
|
|
oem_params->sds1.ports[i].phy_mask = pmask;
|
||
|
|
}
|
||
|
|
|
||
|
|
return SCI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* isci_parse_user_parameters() - This method will take user parameters
|
||
|
|
* from the module init parameters and copy them to user_params. This will
|
||
|
|
* only copy values that are not set to the module parameter default values
|
||
|
|
* @user_parameters: This parameter specifies the controller default user
|
||
|
|
* parameters. It is expected that this has been initialized to the default
|
||
|
|
* parameters for the controller
|
||
|
|
*
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
enum sci_status isci_parse_user_parameters(
|
||
|
|
union scic_user_parameters *user_params,
|
||
|
|
int scu_index,
|
||
|
|
struct isci_firmware *fw)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (!(scu_index >= 0
|
||
|
|
&& scu_index < SCI_MAX_CONTROLLERS
|
||
|
|
&& user_params != NULL)) {
|
||
|
|
return SCI_FAILURE;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < SCI_MAX_PORTS; i++) {
|
||
|
|
int array_idx = i + (SCI_MAX_PORTS * scu_index);
|
||
|
|
u32 gen = fw->phy_gens[array_idx];
|
||
|
|
|
||
|
|
user_params->sds1.phys[i].max_speed_generation = gen;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return SCI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
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), 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;
|
||
|
|
|
||
|
|
return isci_host;
|
||
|
|
|
||
|
|
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;
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
h->next = pci_info->hosts;
|
||
|
|
pci_info->hosts = h;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = isci_setup_interrupts(pdev);
|
||
|
|
if (err)
|
||
|
|
goto err_host_alloc;
|
||
|
|
|
||
|
|
for_each_isci_host(isci_host, pdev)
|
||
|
|
scsi_scan_host(isci_host->shost);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_host_alloc:
|
||
|
|
for_each_isci_host(isci_host, pdev)
|
||
|
|
isci_unregister_sas_ha(isci_host);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __devexit isci_pci_remove(struct pci_dev *pdev)
|
||
|
|
{
|
||
|
|
struct isci_host *isci_host;
|
||
|
|
|
||
|
|
for_each_isci_host(isci_host, pdev) {
|
||
|
|
isci_unregister_sas_ha(isci_host);
|
||
|
|
isci_host_deinit(isci_host);
|
||
|
|
scic_controller_disable_interrupts(isci_host->core_controller);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static __init int isci_init(void)
|
||
|
|
{
|
||
|
|
int err = -ENOMEM;
|
||
|
|
|
||
|
|
pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME);
|
||
|
|
|
||
|
|
isci_kmem_cache = kmem_cache_create(DRV_NAME,
|
||
|
|
sizeof(struct isci_remote_device) +
|
||
|
|
scic_remote_device_get_object_size(),
|
||
|
|
0, 0, NULL);
|
||
|
|
if (!isci_kmem_cache)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
isci_transport_template = sas_domain_attach_transport(&isci_transport_ops);
|
||
|
|
if (!isci_transport_template)
|
||
|
|
goto err_kmem;
|
||
|
|
|
||
|
|
err = pci_register_driver(&isci_pci_driver);
|
||
|
|
if (err)
|
||
|
|
goto err_sas;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_sas:
|
||
|
|
sas_release_transport(isci_transport_template);
|
||
|
|
err_kmem:
|
||
|
|
kmem_cache_destroy(isci_kmem_cache);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __exit void isci_exit(void)
|
||
|
|
{
|
||
|
|
pci_unregister_driver(&isci_pci_driver);
|
||
|
|
sas_release_transport(isci_transport_template);
|
||
|
|
kmem_cache_destroy(isci_kmem_cache);
|
||
|
|
}
|
||
|
|
|
||
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
||
|
|
MODULE_FIRMWARE(ISCI_FW_NAME);
|
||
|
|
module_init(isci_init);
|
||
|
|
module_exit(isci_exit);
|