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| author | Matt Gates <matthew.gates@hp.com> | 2012-05-01 11:43:06 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-05-10 09:16:25 +0100 |
| commit | 254f796b9f22b1944c64caabc356a56caaa2facd (patch) | |
| tree | 4c5ee6950b15456b0d11c3c36587fa659baf6632 /drivers/scsi/hpsa_cmd.h | |
| parent | 1d94f94d89848762306b4a8bd5e658c11828ab12 (diff) | |
| download | linux-254f796b9f22b1944c64caabc356a56caaa2facd.tar.gz linux-254f796b9f22b1944c64caabc356a56caaa2facd.tar.bz2 linux-254f796b9f22b1944c64caabc356a56caaa2facd.zip | |
[SCSI] hpsa: use multiple reply queues
Smart Arrays can support multiple reply queues onto which command
completions may be deposited. It can help performance quite a bit
to arrange for command completions to be processed on the same CPU
from which they were submitted to increase the likelihood of cache
hits.
Signed-off-by: Matt Gates <matthew.gates@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/hpsa_cmd.h')
| -rw-r--r-- | drivers/scsi/hpsa_cmd.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index 14b56c93cefa..43f163164b24 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -129,6 +129,7 @@ #define CFGTBL_Trans_Simple 0x00000002l #define CFGTBL_Trans_Performant 0x00000004l #define CFGTBL_Trans_use_short_tags 0x20000000l +#define CFGTBL_Trans_enable_directed_msix (1 << 30) #define CFGTBL_BusType_Ultra2 0x00000001l #define CFGTBL_BusType_Ultra3 0x00000002l @@ -380,8 +381,8 @@ struct TransTable_struct { u32 RepQCount; u32 RepQCtrAddrLow32; u32 RepQCtrAddrHigh32; - u32 RepQAddr0Low32; - u32 RepQAddr0High32; +#define MAX_REPLY_QUEUES 8 + struct vals32 RepQAddr[MAX_REPLY_QUEUES]; }; struct hpsa_pci_info { |