commit 7a195f464e0692607aca8150c8489a838fab684b
author Prakash, Sathya <sathya.prakash@lsi.com> Tue Aug 14 16:08:40 2007 +0530
committer James Bottomley <jejb@mulgrave.localdomain> Fri Oct 12 14:40:40 2007 -0400
tree 55368ee04d0ad6209fae6fe375b977046488c4b6
parent 232f08fc82b15fdcaffc68c558115bfb2b34db86

[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>

drivers/message/fusion/mptctl.c

diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index 89695e7..dce1e9c 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -342,7 +342,7 @@
 	SCSITaskMgmt_t	*pScsiTm;
 	MPT_SCSI_HOST	*hd;
 	int		 ii;
-	int		 retval;
+	int		 retval=0;
 
 
 	ioctl->reset &= ~MPTCTL_RESET_OK;
@@ -395,12 +395,19 @@
 	DBG_DUMP_TM_REQUEST_FRAME(ioctl->ioc, (u32 *)mf);
 
 	ioctl->wait_done=0;
-	if ((retval = mpt_send_handshake_request(mptctl_id, ioctl->ioc,
-	     sizeof(SCSITaskMgmt_t), (u32*)pScsiTm, CAN_SLEEP)) != 0) {
-		dfailprintk(ioctl->ioc, printk(MYIOC_s_ERR_FMT "_send_handshake FAILED!"
-			" (hd %p, ioc %p, mf %p) \n", hd->ioc->name, hd,
-			hd->ioc, mf));
-		goto mptctl_bus_reset_done;
+
+	if ((ioctl->ioc->facts.IOCCapabilities & MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q) &&
+	    (ioctl->ioc->facts.MsgVersion >= MPI_VERSION_01_05))
+		mpt_put_msg_frame_hi_pri(mptctl_id, ioctl->ioc, mf);
+	else {
+		retval = mpt_send_handshake_request(mptctl_id, ioctl->ioc,
+			sizeof(SCSITaskMgmt_t), (u32*)pScsiTm, CAN_SLEEP);
+		if (retval != 0) {
+			dfailprintk(ioctl->ioc, printk(MYIOC_s_ERR_FMT "_send_handshake FAILED!"
+				" (hd %p, ioc %p, mf %p) \n", hd->ioc->name, hd,
+				hd->ioc, mf));
+			goto mptctl_bus_reset_done;
+		}
 	}
 
 	/* Now wait for the command to complete */
@@ -2187,15 +2194,20 @@
 
 		DBG_DUMP_TM_REQUEST_FRAME(ioc, (u32 *)mf);
 
-		if (mpt_send_handshake_request(mptctl_id, ioc,
-			sizeof(SCSITaskMgmt_t), (u32*)mf,
-			CAN_SLEEP) != 0) {
-			dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "_send_handshake FAILED!"
-				" (ioc %p, mf %p) \n", ioc->name,
-				ioc, mf));
-			mptctl_free_tm_flags(ioc);
-			rc = -ENODATA;
-			goto done_free_mem;
+		if ((ioc->facts.IOCCapabilities & MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q) &&
+		    (ioc->facts.MsgVersion >= MPI_VERSION_01_05))
+			mpt_put_msg_frame_hi_pri(mptctl_id, ioc, mf);
+		else {
+			rc =mpt_send_handshake_request(mptctl_id, ioc,
+				sizeof(SCSITaskMgmt_t), (u32*)mf, CAN_SLEEP);
+			if (rc != 0) {
+				dfailprintk(ioc, printk(MYIOC_s_ERR_FMT
+				    "_send_handshake FAILED! (ioc %p, mf %p)\n",
+				    ioc->name, ioc, mf));
+				mptctl_free_tm_flags(ioc);
+				rc = -ENODATA;
+				goto done_free_mem;
+			}
 		}
 
 	} else