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scsi: smartpqi: add heartbeat check

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check for controller lockups

Reviewed-by: Scott Benesh <scott.benesh@microsemi.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
2017-05-03 18:53:11 -05:00
committed by Martin K. Petersen
parent 061ef06a2d
commit 98f876674a
3 changed files with 143 additions and 47 deletions
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60
drivers/scsi/smartpqi/smartpqi.h
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@@ -490,7 +490,6 @@ struct pqi_raid_error_info {
#define PQI_EVENT_TYPE_LOGICAL_DEVICE 0x5
#define PQI_EVENT_TYPE_AIO_STATE_CHANGE 0xfd
#define PQI_EVENT_TYPE_AIO_CONFIG_CHANGE 0xfe
#define PQI_EVENT_TYPE_HEARTBEAT 0xff
#pragma pack()
@@ -635,6 +634,58 @@ struct pqi_encryption_info {
u32 encrypt_tweak_upper;
};
#pragma pack(1)
#define PQI_CONFIG_TABLE_SIGNATURE "CFGTABLE"
#define PQI_CONFIG_TABLE_MAX_LENGTH ((u16)~0)
/* configuration table section IDs */
#define PQI_CONFIG_TABLE_SECTION_GENERAL_INFO 0
#define PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES 1
#define PQI_CONFIG_TABLE_SECTION_FIRMWARE_ERRATA 2
#define PQI_CONFIG_TABLE_SECTION_DEBUG 3
#define PQI_CONFIG_TABLE_SECTION_HEARTBEAT 4
struct pqi_config_table {
u8 signature[8]; /* "CFGTABLE" */
__le32 first_section_offset; /* offset in bytes from the base */
/* address of this table to the */
/* first section */
};
struct pqi_config_table_section_header {
__le16 section_id; /* as defined by the */
/* PQI_CONFIG_TABLE_SECTION_* */
/* manifest constants above */
__le16 next_section_offset; /* offset in bytes from base */
/* address of the table of the */
/* next section or 0 if last entry */
};
struct pqi_config_table_general_info {
struct pqi_config_table_section_header header;
__le32 section_length; /* size of this section in bytes */
/* including the section header */
__le32 max_outstanding_requests; /* max. outstanding */
/* commands supported by */
/* the controller */
__le32 max_sg_size; /* max. transfer size of a single */
/* command */
__le32 max_sg_per_request; /* max. number of scatter-gather */
/* entries supported in a single */
/* command */
};
struct pqi_config_table_debug {
struct pqi_config_table_section_header header;
__le32 scratchpad;
};
struct pqi_config_table_heartbeat {
struct pqi_config_table_section_header header;
__le32 heartbeat_counter;
};
#define PQI_MAX_OUTSTANDING_REQUESTS ((u32)~0)
#define PQI_MAX_TRANSFER_SIZE (4 * 1024U * 1024U)
@@ -645,8 +696,6 @@ struct pqi_encryption_info {
#define PQI_HBA_BUS 2
#define PQI_MAX_BUS PQI_HBA_BUS
#pragma pack(1)
struct report_lun_header {
__be32 list_length;
u8 extended_response;
@@ -870,7 +919,6 @@ struct pqi_io_request {
struct list_head request_list_entry;
};
#define PQI_EVENT_HEARTBEAT 0
#define PQI_NUM_SUPPORTED_EVENTS 6
struct pqi_event {
@@ -943,7 +991,6 @@ struct pqi_ctrl_info {
u8 inbound_spanning_supported : 1;
u8 outbound_spanning_supported : 1;
u8 pqi_mode_enabled : 1;
u8 heartbeat_timer_started : 1;
u8 update_time_worker_scheduled : 1;
struct list_head scsi_device_list;
@@ -963,7 +1010,8 @@ struct pqi_ctrl_info {
atomic_t num_interrupts;
int previous_num_interrupts;
unsigned int num_heartbeats_requested;
u32 previous_heartbeat_count;
__le32 __iomem *heartbeat_counter;
struct timer_list heartbeat_timer;
struct semaphore sync_request_sem;