diff options
| author | Salyzyn, Mark <Mark_Salyzyn@adaptec.com> | 2008-01-08 12:01:07 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-01-23 11:29:18 -0600 |
| commit | 95e852e1ef165560e85d3012127068c8f08b19a1 (patch) | |
| tree | 42963d0880b10f34c888ad55890b679ad8a5ccc2 /drivers/scsi/aacraid/aacraid.h | |
| parent | 9b161a4d3e83518323ce13822e55de70c630aa65 (diff) | |
[SCSI] aacraid: add parameter to control FUA and SYNCHRONIZE_CACHE policy
aacraid.cache parameter, Disable Queue Flush commands:
bit 0 - Disable FUA in WRITE SCSI commands
bit 1 - Disable SYNCHRONIZE_CACHE SCSI command
bit 2 - Disable only if Battery not protecting adapter supplied Cache
e.g.: aacraid.cache=7 will disable the FUA and SYNCHRONIZE_CACHE
commands if the adapter has reported that it's cache is battery backed
up.
This parameter permits experimentation with tradeoffs between
performance and caching policy.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/aacraid/aacraid.h')
| -rw-r--r-- | drivers/scsi/aacraid/aacraid.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index 734623af9c45..7bb3d9fde713 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -1016,6 +1016,7 @@ struct aac_dev * lets break them out so we don't have to do an AND to check them */ u8 nondasd_support; + u8 cache_protected; u8 dac_support; u8 raid_scsi_mode; u8 comm_interface; @@ -1770,6 +1771,7 @@ extern struct aac_common aac_config; #define AifEnConfigChange 3 /* Adapter configuration change */ #define AifEnContainerChange 4 /* Container configuration change */ #define AifEnDeviceFailure 5 /* SCSI device failed */ +#define AifEnBatteryEvent 14 /* Change in Battery State */ #define AifEnAddContainer 15 /* A new array was created */ #define AifEnDeleteContainer 16 /* A container was deleted */ #define AifEnExpEvent 23 /* Firmware Event Log */ |