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| author | Vikas Chaudhary <vikas.chaudhary@qlogic.com> | 2011-08-12 02:51:28 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-08-27 08:36:46 -0600 |
| commit | 2944369144548432f3a5ffce7a2926bfb4ce4f0a (patch) | |
| tree | c42de87060c88ed22224e828fbd81a83f33a03e7 /include/scsi/scsi_host.h | |
| parent | 6085491c34b37fa806f70ccd3fb2bf08416e9e98 (diff) | |
| download | linux-2944369144548432f3a5ffce7a2926bfb4ce4f0a.tar.gz | |
[SCSI] scsi: Added support for adapter and firmware reset
Added new sysfs attr 'host_reset' in scsi_sysfs.c to perform adapter or firmware reset as suggested by Mike Christie here: http://marc.info/?l=linux-scsi&m=127359347111167&w=2 user/application can write "adapter" or "firmware" on this attr and it will call newly added function hook in scsi_host_template to call LDD adapter or firmware reset implementation. Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'include/scsi/scsi_host.h')
| -rw-r--r-- | include/scsi/scsi_host.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index f1f2644137b8..fc22ad9dba77 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -355,6 +355,19 @@ struct scsi_host_template { */ enum blk_eh_timer_return (*eh_timed_out)(struct scsi_cmnd *); + /* This is an optional routine that allows transport to initiate + * LLD adapter or firmware reset using sysfs attribute. + * + * Return values: 0 on success, -ve value on failure. + * + * Status: OPTIONAL + */ + + int (*host_reset)(struct Scsi_Host *shost, int reset_type); +#define SCSI_ADAPTER_RESET 1 +#define SCSI_FIRMWARE_RESET 2 + + /* * Name of proc directory */ |