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[SCSI] mpt fusion: Usage of high priority request FIFO to send task management commands

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Added support for sending the task management requests through High priority
request FIFO instead of Doorbell writes when firmware support High priority
FIFO.

signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Acked-by: Eric Moore <Eric.Moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Prakash, Sathya
2007-08-14 16:08:40 +05:30
committed by James Bottomley
parent 232f08fc82
commit 7a195f464e
5 changed files with 75 additions and 28 deletions
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4
drivers/message/fusion/mptbase.h
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@@ -336,7 +336,8 @@ typedef struct _SYSIF_REGS
u32 Reserved2[2]; /* 38-3F reserved for future use */
u32 RequestFifo; /* 40 Request Post/Free FIFO */
u32 ReplyFifo; /* 44 Reply Post/Free FIFO */
u32 Reserved3[2]; /* 48-4F reserved for future use */
u32 RequestHiPriFifo; /* 48 Hi Priority Request FIFO */
u32 Reserved3; /* 4C-4F reserved for future use */
u32 HostIndex; /* 50 Host Index register */
u32 Reserved4[15]; /* 54-8F */
u32 Fubar; /* 90 For Fubar usage */
@@ -893,6 +894,7 @@ extern void mpt_device_driver_deregister(int cb_idx);
extern MPT_FRAME_HDR *mpt_get_msg_frame(int handle, MPT_ADAPTER *ioc);
extern void mpt_free_msg_frame(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf);
extern void mpt_put_msg_frame(int handle, MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf);
extern void mpt_put_msg_frame_hi_pri(int handle, MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf);
extern void mpt_add_sge(char *pAddr, u32 flagslength, dma_addr_t dma_addr);
extern int mpt_send_handshake_request(int handle, MPT_ADAPTER *ioc, int reqBytes, u32 *req, int sleepFlag);