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| author | Sumit Saxena <sumit.saxena@avagotech.com> | 2016-01-28 21:04:25 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-02-23 21:27:02 -0500 |
| commit | 18365b138508bfbce0405f9904639fa3b7caf3c9 (patch) | |
| tree | d776d9ff2aff21a03b8c910565d2c725b418fe76 /drivers/scsi/megaraid/megaraid_sas.h | |
| parent | 2c048351c8e3e2b90b3c8b9dea3ee1b709853a9d (diff) | |
| download | talos-obmc-linux-18365b138508bfbce0405f9904639fa3b7caf3c9.tar.gz talos-obmc-linux-18365b138508bfbce0405f9904639fa3b7caf3c9.zip | |
megaraid_sas: Task management support
This patch adds task management for SCSI commands. Added functions are
task abort and target reset.
1. Currently, megaraid_sas driver performs controller reset when any IO
times out. With task management support added, task abort and target
reset will be tried to recover timed out IO. If task management fails,
then controller reset will be performaned. If the task management
request times out, fail the request and escalate to the next
level (controller reset).
2. mr_device_priv_data will be allocated for all generations of
controller, but is_tm_capable flag will never be set for
controllers (prior to Invader series) as firmware support is not
available for task management.
3. Task management capable firmware will set is_tm_capable flag in
firmware API.
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index dcc6ff8a9d5c..0fcb15643087 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -1520,6 +1520,15 @@ union megasas_frame { u8 raw_bytes[64]; }; +/** + * struct MR_PRIV_DEVICE - sdev private hostdata + * @is_tm_capable: firmware managed tm_capable flag + * @tm_busy: TM request is in progress + */ +struct MR_PRIV_DEVICE { + bool is_tm_capable; + bool tm_busy; +}; struct megasas_cmd; union megasas_evt_class_locale { @@ -2073,4 +2082,8 @@ void megasas_return_mfi_mpt_pthr(struct megasas_instance *instance, int megasas_cmd_type(struct scsi_cmnd *cmd); void megasas_setup_jbod_map(struct megasas_instance *instance); +void megasas_update_sdev_properties(struct scsi_device *sdev); +int megasas_reset_fusion(struct Scsi_Host *shost, int reason); +int megasas_task_abort_fusion(struct scsi_cmnd *scmd); +int megasas_reset_target_fusion(struct scsi_cmnd *scmd); #endif /*LSI_MEGARAID_SAS_H */ |
