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

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>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index a8c80805e170..012be5ea906e 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -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);