diff options
author | Kevin Barnett <kevin.barnett@hpe.com> | 2017-05-03 18:52:58 -0500 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-12 20:48:02 -0400 |
commit | 7561a7e4412e515100ac195303531fc2621ac2db (patch) | |
tree | 5a414e3c4a03894e8c1e8b4c991bc48c1cb836fe /drivers/scsi/smartpqi/smartpqi.h | |
parent | 6a50d6ada03d8d9102a632d0e2db70cd9b6620f5 (diff) | |
download | linux-7561a7e4412e515100ac195303531fc2621ac2db.tar.bz2 |
scsi: smartpqi: enhance resets
- Block all I/O targeted at LUN reset device.
- Wait until all I/O targeted at LUN reset device has been
consumed by the controller.
- Issue LUN reset request.
- Wait until all outstanding I/Os and LUN reset completion
have been received by the host.
- Return to OS results of LUN reset request.
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>
Diffstat (limited to 'drivers/scsi/smartpqi/smartpqi.h')
-rw-r--r-- | drivers/scsi/smartpqi/smartpqi.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h index 02b31965bf6e..5b0c6fb3ceb1 100644 --- a/drivers/scsi/smartpqi/smartpqi.h +++ b/drivers/scsi/smartpqi/smartpqi.h @@ -734,6 +734,8 @@ struct pqi_scsi_dev { u8 new_device : 1; u8 keep_device : 1; u8 volume_offline : 1; + bool in_reset; + bool device_offline; u8 vendor[8]; /* bytes 8-15 of inquiry data */ u8 model[16]; /* bytes 16-31 of inquiry data */ u64 sas_address; @@ -761,6 +763,8 @@ struct pqi_scsi_dev { struct list_head new_device_list_entry; struct list_head add_list_entry; struct list_head delete_list_entry; + + atomic_t scsi_cmds_outstanding; }; /* VPD inquiry pages */ @@ -926,7 +930,9 @@ struct pqi_ctrl_info { struct Scsi_Host *scsi_host; struct mutex scan_mutex; - bool controller_online : 1; + struct mutex lun_reset_mutex; + bool controller_online; + bool block_requests; u8 inbound_spanning_supported : 1; u8 outbound_spanning_supported : 1; u8 pqi_mode_enabled : 1; @@ -953,7 +959,9 @@ struct pqi_ctrl_info { struct timer_list heartbeat_timer; struct semaphore sync_request_sem; - struct semaphore lun_reset_sem; + atomic_t num_busy_threads; + atomic_t num_blocked_threads; + wait_queue_head_t block_requests_wait; }; enum pqi_ctrl_mode { @@ -1092,6 +1100,7 @@ int pqi_add_sas_device(struct pqi_sas_node *pqi_sas_node, void pqi_remove_sas_device(struct pqi_scsi_dev *device); struct pqi_scsi_dev *pqi_find_device_by_sas_rphy( struct pqi_ctrl_info *ctrl_info, struct sas_rphy *rphy); +void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd); extern struct sas_function_template pqi_sas_transport_functions; |