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[SCSI] hpsa: use multiple reply queues

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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>
This commit is contained in:
Matt Gates
2012-05-01 11:43:06 -05:00
committed by James Bottomley
parent 1d94f94d89
commit 254f796b9f
3 changed files with 153 additions and 73 deletions
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5
drivers/scsi/hpsa_cmd.h
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@@ -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 {