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linux/drivers/scsi/isci/init.c
Christoph Hellwig efc3c1df5f scsi: remove ->change_queue_type method 
Since we got rid of ordered tag support in 2010 the prime use case of
switching on and off ordered tags has been obsolete.  The other function
of enabling/disabling tagging entirely has only been correctly implemented
by the 53c700 driver and isn't generally useful.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
2014-12-04 09:55:45 +01:00

812 lines
22 KiB
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/*
* 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);
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,
.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,
.cmd_per_lun = 1,
.this_id = -1,
.sg_tablesize = SG_ALL,
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
.use_clustering = ENABLE_CLUSTERING,
.eh_abort_handler = sas_eh_abort_handler,
.eh_device_reset_handler = sas_eh_device_reset_handler,
.eh_bus_reset_handler = sas_eh_bus_reset_handler,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.shost_attrs = isci_host_attrs,
.use_blk_tags = 1,
.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_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;
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;
sas_unregister_ha(&isci_host->sas_ha);
shost = to_shost(isci_host);
sas_remove_host(shost);
scsi_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 = 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_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;
for (i = 0; i < num_msix; i++)
pci_info->msix_entries[i].entry = i;
err = pci_enable_msix_exact(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];
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, msix->vector, 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];
msix = &pci_info->msix_entries[i];
devm_free_irq(&pdev->dev, msix->vector, ihost);
}
pci_disable_msix(pdev);
goto intx;
}
return 0;
intx:
for_each_isci_host(i, ihost, pdev) {
err = devm_request_irq(&pdev->dev, pdev->irq, 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)
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;
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_enabled(EFI_RUNTIME_SERVICES))
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;
/* turn on DIF support */
scsi_host_set_prot(to_shost(h),
SHOST_DIF_TYPE1_PROTECTION |
SHOST_DIF_TYPE2_PROTECTION |
SHOST_DIF_TYPE3_PROTECTION);
scsi_host_set_guard(to_shost(h), SHOST_DIX_GUARD_CRC);
}
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);
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