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scsi: smartpqi: correct aio error path
set the internal flag that causes I/O to be sent down the RAID path when the AIO path is disabled 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
Martin K. Petersen
parent
3c50976f33
commit
376fb880a4
2 changed files with 285 additions and 68 deletions
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@ -785,11 +785,11 @@ struct pqi_scsi_dev {
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u8 is_physical_device : 1;
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u8 is_external_raid_device : 1;
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u8 target_lun_valid : 1;
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u8 aio_enabled : 1; /* only valid for physical disks */
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u8 device_gone : 1;
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u8 new_device : 1;
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u8 keep_device : 1;
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u8 volume_offline : 1;
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bool aio_enabled; /* only valid for physical disks */
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bool in_reset;
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bool device_offline;
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u8 vendor[8]; /* bytes 8-15 of inquiry data */
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@ -911,7 +911,9 @@ struct pqi_io_request {
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void (*io_complete_callback)(struct pqi_io_request *io_request,
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void *context);
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void *context;
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u8 raid_bypass : 1;
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int status;
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struct pqi_queue_group *queue_group;
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struct scsi_cmnd *scmd;
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void *error_info;
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struct pqi_sg_descriptor *sg_chain_buffer;
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@ -1019,6 +1021,10 @@ struct pqi_ctrl_info {
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atomic_t num_busy_threads;
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atomic_t num_blocked_threads;
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wait_queue_head_t block_requests_wait;
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struct list_head raid_bypass_retry_list;
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spinlock_t raid_bypass_retry_list_lock;
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struct work_struct raid_bypass_retry_work;
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};
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enum pqi_ctrl_mode {
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@ -63,6 +63,9 @@ static char *microsemi_branded_controller = "Microsemi Smart Family Controller";
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static void pqi_perform_lockup_action(void);
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static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
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static void pqi_complete_all_queued_raid_bypass_retries(
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struct pqi_ctrl_info *ctrl_info, int result);
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static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
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static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
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static void pqi_scan_start(struct Scsi_Host *shost);
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static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
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@ -74,7 +77,7 @@ static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
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static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
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struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
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unsigned int cdb_length, struct pqi_queue_group *queue_group,
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struct pqi_encryption_info *encryption_info);
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struct pqi_encryption_info *encryption_info, bool raid_bypass);
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/* for flags argument to pqi_submit_raid_request_synchronous() */
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#define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
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@ -227,6 +230,7 @@ static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
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{
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ctrl_info->block_requests = false;
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wake_up_all(&ctrl_info->block_requests_wait);
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pqi_retry_raid_bypass_requests(ctrl_info);
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scsi_unblock_requests(ctrl_info->scsi_host);
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}
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@ -445,6 +449,14 @@ static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
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buffer, buffer_length, pci_dir);
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}
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static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
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{
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io_request->scmd = NULL;
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io_request->status = 0;
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io_request->error_info = NULL;
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io_request->raid_bypass = false;
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}
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static struct pqi_io_request *pqi_alloc_io_request(
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struct pqi_ctrl_info *ctrl_info)
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{
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@ -462,9 +474,7 @@ static struct pqi_io_request *pqi_alloc_io_request(
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/* benignly racy */
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ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
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io_request->scmd = NULL;
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io_request->status = 0;
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io_request->error_info = NULL;
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pqi_reinit_io_request(io_request);
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return io_request;
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}
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@ -1678,8 +1688,8 @@ static bool pqi_is_supported_device(struct pqi_scsi_dev *device)
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/*
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* Only support the HBA controller itself as a RAID
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* controller. If it's a RAID controller other than
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* the HBA itself (an external RAID controller, MSA500
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* or similar), we don't support it.
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* the HBA itself (an external RAID controller, for
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* example), we don't support it.
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*/
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if (pqi_is_hba_lunid(device->scsi3addr))
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is_supported = true;
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@ -2308,7 +2318,7 @@ static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
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}
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return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
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cdb, cdb_length, queue_group, encryption_info_ptr);
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cdb, cdb_length, queue_group, encryption_info_ptr, true);
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}
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#define PQI_STATUS_IDLE 0x0
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@ -2381,6 +2391,7 @@ static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
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device = io_request->scmd->device->hostdata;
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device->offload_enabled = false;
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device->aio_enabled = false;
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}
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static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
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@ -2500,9 +2511,11 @@ static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
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break;
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case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
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case PQI_AIO_STATUS_INVALID_DEVICE:
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device_offline = true;
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pqi_take_device_offline(scmd->device, "AIO");
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host_byte = DID_NO_CONNECT;
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if (!io_request->raid_bypass) {
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device_offline = true;
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pqi_take_device_offline(scmd->device, "AIO");
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host_byte = DID_NO_CONNECT;
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}
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scsi_status = SAM_STAT_CHECK_CONDITION;
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break;
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case PQI_AIO_STATUS_IO_ERROR:
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@ -2751,48 +2764,6 @@ static void pqi_event_worker(struct work_struct *work)
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pqi_schedule_rescan_worker(ctrl_info);
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}
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static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
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{
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unsigned int i;
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unsigned int path;
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struct pqi_queue_group *queue_group;
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unsigned long flags;
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struct pqi_io_request *io_request;
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struct pqi_io_request *next;
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struct scsi_cmnd *scmd;
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ctrl_info->controller_online = false;
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dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
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sis_shutdown_ctrl(ctrl_info);
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pci_disable_device(ctrl_info->pci_dev);
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pqi_perform_lockup_action();
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for (i = 0; i < ctrl_info->num_queue_groups; i++) {
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queue_group = &ctrl_info->queue_groups[i];
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for (path = 0; path < 2; path++) {
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spin_lock_irqsave(
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&queue_group->submit_lock[path], flags);
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list_for_each_entry_safe(io_request, next,
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&queue_group->request_list[path],
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request_list_entry) {
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scmd = io_request->scmd;
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if (scmd) {
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set_host_byte(scmd, DID_NO_CONNECT);
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pqi_scsi_done(scmd);
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}
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list_del(&io_request->request_list_entry);
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}
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spin_unlock_irqrestore(
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&queue_group->submit_lock[path], flags);
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}
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}
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}
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#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ)
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static void pqi_heartbeat_timer_handler(unsigned long data)
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@ -3461,9 +3432,11 @@ static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
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spin_lock_irqsave(&queue_group->submit_lock[path], flags);
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if (io_request)
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if (io_request) {
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io_request->queue_group = queue_group;
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list_add_tail(&io_request->request_list_entry,
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&queue_group->request_list[path]);
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}
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iq_pi = queue_group->iq_pi_copy[path];
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@ -3623,6 +3596,11 @@ static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
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goto out;
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}
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if (pqi_ctrl_offline(ctrl_info)) {
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rc = -ENXIO;
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goto out;
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}
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io_request = pqi_alloc_io_request(ctrl_info);
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put_unaligned_le16(io_request->index,
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@ -4509,21 +4487,18 @@ static void pqi_raid_io_complete(struct pqi_io_request *io_request,
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pqi_scsi_done(scmd);
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}
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static int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
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static int pqi_raid_submit_scsi_cmd_with_io_request(
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struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
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struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
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struct pqi_queue_group *queue_group)
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{
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int rc;
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size_t cdb_length;
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struct pqi_io_request *io_request;
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struct pqi_raid_path_request *request;
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io_request = pqi_alloc_io_request(ctrl_info);
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io_request->io_complete_callback = pqi_raid_io_complete;
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io_request->scmd = scmd;
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scmd->host_scribble = (unsigned char *)io_request;
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request = io_request->iu;
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memset(request, 0,
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offsetof(struct pqi_raid_path_request, sg_descriptors));
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@ -4602,6 +4577,183 @@ static int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
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return 0;
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}
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static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
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struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
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struct pqi_queue_group *queue_group)
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{
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struct pqi_io_request *io_request;
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io_request = pqi_alloc_io_request(ctrl_info);
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return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
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device, scmd, queue_group);
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}
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static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
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{
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if (!pqi_ctrl_blocked(ctrl_info))
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schedule_work(&ctrl_info->raid_bypass_retry_work);
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}
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static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
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{
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struct scsi_cmnd *scmd;
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struct pqi_ctrl_info *ctrl_info;
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if (!io_request->raid_bypass)
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return false;
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scmd = io_request->scmd;
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if ((scmd->result & 0xff) == SAM_STAT_GOOD)
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return false;
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if (host_byte(scmd->result) == DID_NO_CONNECT)
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return false;
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ctrl_info = shost_to_hba(scmd->device->host);
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if (pqi_ctrl_offline(ctrl_info))
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return false;
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return true;
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}
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static inline void pqi_add_to_raid_bypass_retry_list(
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struct pqi_ctrl_info *ctrl_info,
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struct pqi_io_request *io_request, bool at_head)
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{
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unsigned long flags;
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spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
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if (at_head)
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list_add(&io_request->request_list_entry,
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&ctrl_info->raid_bypass_retry_list);
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else
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list_add_tail(&io_request->request_list_entry,
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&ctrl_info->raid_bypass_retry_list);
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spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
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}
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static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
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void *context)
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{
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struct scsi_cmnd *scmd;
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scmd = io_request->scmd;
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pqi_free_io_request(io_request);
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pqi_scsi_done(scmd);
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}
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static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
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{
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struct scsi_cmnd *scmd;
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struct pqi_ctrl_info *ctrl_info;
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io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
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scmd = io_request->scmd;
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scmd->result = 0;
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ctrl_info = shost_to_hba(scmd->device->host);
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pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
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pqi_schedule_bypass_retry(ctrl_info);
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}
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static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
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{
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struct scsi_cmnd *scmd;
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struct pqi_scsi_dev *device;
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struct pqi_ctrl_info *ctrl_info;
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struct pqi_queue_group *queue_group;
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scmd = io_request->scmd;
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device = scmd->device->hostdata;
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if (pqi_device_in_reset(device)) {
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pqi_free_io_request(io_request);
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set_host_byte(scmd, DID_RESET);
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pqi_scsi_done(scmd);
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return 0;
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}
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ctrl_info = shost_to_hba(scmd->device->host);
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queue_group = io_request->queue_group;
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pqi_reinit_io_request(io_request);
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return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
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device, scmd, queue_group);
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}
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static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
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struct pqi_ctrl_info *ctrl_info)
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{
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unsigned long flags;
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struct pqi_io_request *io_request;
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spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
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io_request = list_first_entry_or_null(
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&ctrl_info->raid_bypass_retry_list,
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struct pqi_io_request, request_list_entry);
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if (io_request)
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list_del(&io_request->request_list_entry);
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spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
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return io_request;
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}
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static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
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{
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int rc;
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struct pqi_io_request *io_request;
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pqi_ctrl_busy(ctrl_info);
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while (1) {
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if (pqi_ctrl_blocked(ctrl_info))
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break;
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io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
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if (!io_request)
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break;
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rc = pqi_retry_raid_bypass(io_request);
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if (rc) {
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pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
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true);
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pqi_schedule_bypass_retry(ctrl_info);
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break;
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}
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}
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pqi_ctrl_unbusy(ctrl_info);
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}
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static void pqi_raid_bypass_retry_worker(struct work_struct *work)
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{
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struct pqi_ctrl_info *ctrl_info;
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ctrl_info = container_of(work, struct pqi_ctrl_info,
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raid_bypass_retry_work);
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pqi_retry_raid_bypass_requests(ctrl_info);
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}
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static void pqi_complete_all_queued_raid_bypass_retries(
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struct pqi_ctrl_info *ctrl_info, int result)
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{
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unsigned long flags;
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struct pqi_io_request *io_request;
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struct pqi_io_request *next;
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struct scsi_cmnd *scmd;
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spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
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list_for_each_entry_safe(io_request, next,
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&ctrl_info->raid_bypass_retry_list, request_list_entry) {
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list_del(&io_request->request_list_entry);
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scmd = io_request->scmd;
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pqi_free_io_request(io_request);
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scmd->result = result;
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pqi_scsi_done(scmd);
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}
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spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
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}
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static void pqi_aio_io_complete(struct pqi_io_request *io_request,
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void *context)
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{
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@ -4611,6 +4763,10 @@ static void pqi_aio_io_complete(struct pqi_io_request *io_request,
|
|||
scsi_dma_unmap(scmd);
|
||||
if (io_request->status == -EAGAIN)
|
||||
set_host_byte(scmd, DID_IMM_RETRY);
|
||||
else if (pqi_raid_bypass_retry_needed(io_request)) {
|
||||
pqi_queue_raid_bypass_retry(io_request);
|
||||
return;
|
||||
}
|
||||
pqi_free_io_request(io_request);
|
||||
pqi_scsi_done(scmd);
|
||||
}
|
||||
|
|
@ -4620,13 +4776,13 @@ static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
|
|||
struct pqi_queue_group *queue_group)
|
||||
{
|
||||
return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
|
||||
scmd->cmnd, scmd->cmd_len, queue_group, NULL);
|
||||
scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
|
||||
}
|
||||
|
||||
static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
|
||||
struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
|
||||
unsigned int cdb_length, struct pqi_queue_group *queue_group,
|
||||
struct pqi_encryption_info *encryption_info)
|
||||
struct pqi_encryption_info *encryption_info, bool raid_bypass)
|
||||
{
|
||||
int rc;
|
||||
struct pqi_io_request *io_request;
|
||||
|
|
@ -4635,8 +4791,7 @@ static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
|
|||
io_request = pqi_alloc_io_request(ctrl_info);
|
||||
io_request->io_complete_callback = pqi_aio_io_complete;
|
||||
io_request->scmd = scmd;
|
||||
|
||||
scmd->host_scribble = (unsigned char *)io_request;
|
||||
io_request->raid_bypass = raid_bypass;
|
||||
|
||||
request = io_request->iu;
|
||||
memset(request, 0,
|
||||
|
|
@ -4761,11 +4916,8 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost,
|
|||
!blk_rq_is_passthrough(scmd->request)) {
|
||||
rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
|
||||
scmd, queue_group);
|
||||
if (rc == 0 ||
|
||||
rc == SCSI_MLQUEUE_HOST_BUSY ||
|
||||
rc == SAM_STAT_CHECK_CONDITION ||
|
||||
rc == SAM_STAT_RESERVATION_CONFLICT)
|
||||
raid_bypassed = true;
|
||||
if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
|
||||
raid_bypassed = true;
|
||||
}
|
||||
if (!raid_bypassed)
|
||||
rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
|
||||
|
|
@ -6159,6 +6311,11 @@ static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
|
|||
PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
|
||||
init_waitqueue_head(&ctrl_info->block_requests_wait);
|
||||
|
||||
INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
|
||||
spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
|
||||
INIT_WORK(&ctrl_info->raid_bypass_retry_work,
|
||||
pqi_raid_bypass_retry_worker);
|
||||
|
||||
ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
|
||||
ctrl_info->irq_mode = IRQ_MODE_NONE;
|
||||
ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
|
||||
|
|
@ -6228,6 +6385,60 @@ static void pqi_perform_lockup_action(void)
|
|||
}
|
||||
}
|
||||
|
||||
static void pqi_complete_all_queued_requests(struct pqi_ctrl_info *ctrl_info,
|
||||
int result)
|
||||
{
|
||||
unsigned int i;
|
||||
unsigned int path;
|
||||
struct pqi_queue_group *queue_group;
|
||||
unsigned long flags;
|
||||
struct pqi_io_request *io_request;
|
||||
struct pqi_io_request *next;
|
||||
struct scsi_cmnd *scmd;
|
||||
|
||||
for (i = 0; i < ctrl_info->num_queue_groups; i++) {
|
||||
queue_group = &ctrl_info->queue_groups[i];
|
||||
|
||||
for (path = 0; path < 2; path++) {
|
||||
spin_lock_irqsave(
|
||||
&queue_group->submit_lock[path], flags);
|
||||
|
||||
list_for_each_entry_safe(io_request, next,
|
||||
&queue_group->request_list[path],
|
||||
request_list_entry) {
|
||||
|
||||
scmd = io_request->scmd;
|
||||
if (scmd) {
|
||||
scmd->result = result;
|
||||
pqi_scsi_done(scmd);
|
||||
}
|
||||
|
||||
list_del(&io_request->request_list_entry);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(
|
||||
&queue_group->submit_lock[path], flags);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void pqi_fail_all_queued_requests(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
pqi_complete_all_queued_requests(ctrl_info, DID_NO_CONNECT << 16);
|
||||
pqi_complete_all_queued_raid_bypass_retries(ctrl_info,
|
||||
DID_NO_CONNECT << 16);
|
||||
}
|
||||
|
||||
static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
ctrl_info->controller_online = false;
|
||||
sis_shutdown_ctrl(ctrl_info);
|
||||
pci_disable_device(ctrl_info->pci_dev);
|
||||
dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
|
||||
pqi_perform_lockup_action();
|
||||
pqi_fail_all_queued_requests(ctrl_info);
|
||||
}
|
||||
|
||||
static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
|
||||
const struct pci_device_id *id)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in a new issue