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scsi: smartpqi: add kdump support

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Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kevin Barnett
2016-08-31 14:54:41 -05:00
committed by Martin K. Petersen
parent 14bb215d09
commit ff6abb7383
4 changed files with 57 additions and 3 deletions
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35
drivers/scsi/smartpqi/smartpqi_init.c
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@@ -153,6 +153,18 @@ static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
}
static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
struct pqi_ctrl_info *ctrl_info)
{
return sis_read_driver_scratch(ctrl_info);
}
static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
enum pqi_ctrl_mode mode)
{
sis_write_driver_scratch(ctrl_info, mode);
}
#define PQI_RESCAN_WORK_INTERVAL (10 * HZ)
static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
@@ -5266,10 +5278,30 @@ out:
return rc;
}
static int pqi_kdump_init(struct pqi_ctrl_info *ctrl_info)
{
if (!sis_is_firmware_running(ctrl_info))
return -ENXIO;
if (pqi_get_ctrl_mode(ctrl_info) == PQI_MODE) {
sis_disable_msix(ctrl_info);
if (pqi_reset(ctrl_info) == 0)
sis_reenable_sis_mode(ctrl_info);
}
return 0;
}
static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
{
int rc;
if (reset_devices) {
rc = pqi_kdump_init(ctrl_info);
if (rc)
return rc;
}
/*
* When the controller comes out of reset, it is always running
* in legacy SIS mode. This is so that it can be compatible
@@ -5343,6 +5375,7 @@ static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
/* From here on, we are running in PQI mode. */
ctrl_info->pqi_mode_enabled = true;
pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
rc = pqi_alloc_admin_queues(ctrl_info);
if (rc) {
@@ -5878,6 +5911,8 @@ static void __attribute__((unused)) verify_structures(void)
sis_ctrl_to_host_doorbell) != 0x9c);
BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
sis_ctrl_to_host_doorbell_clear) != 0xa0);
BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
sis_driver_scratch) != 0xb0);
BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
sis_firmware_status) != 0xbc);
BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,