[SCSI] mpt fusion: Usage of high priority request FIFO to send task management commands
Prakash, Sathya [Tue, 14 Aug 2007 10:38:40 +0000 (15:38 +0530)]
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/mptbase.c
drivers/message/fusion/mptbase.h
drivers/message/fusion/mptctl.c
drivers/message/fusion/mptsas.c
drivers/message/fusion/mptscsih.c

index 828f0ca..7ef86cb 100644 (file)
@@ -842,6 +842,38 @@ mpt_put_msg_frame(int handle, MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf)
        CHIPREG_WRITE32(&ioc->chip->RequestFifo, mf_dma_addr);
 }
 
+/**
+ *     mpt_put_msg_frame_hi_pri - Send a protocol specific MPT request frame
+ *     to a IOC using hi priority request queue.
+ *     @handle: Handle of registered MPT protocol driver
+ *     @ioc: Pointer to MPT adapter structure
+ *     @mf: Pointer to MPT request frame
+ *
+ *     This routine posts a MPT request frame to the request post FIFO of a
+ *     specific MPT adapter.
+ **/
+void
+mpt_put_msg_frame_hi_pri(int handle, MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf)
+{
+       u32 mf_dma_addr;
+       int req_offset;
+       u16      req_idx;       /* Request index */
+
+       /* ensure values are reset properly! */
+       mf->u.frame.hwhdr.msgctxu.fld.cb_idx = handle;
+       req_offset = (u8 *)mf - (u8 *)ioc->req_frames;
+       req_idx = req_offset / ioc->req_sz;
+       mf->u.frame.hwhdr.msgctxu.fld.req_idx = cpu_to_le16(req_idx);
+       mf->u.frame.hwhdr.msgctxu.fld.rsvd = 0;
+
+       DBG_DUMP_PUT_MSG_FRAME(ioc, (u32 *)mf);
+
+       mf_dma_addr = (ioc->req_frames_low_dma + req_offset);
+       dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "mf_dma_addr=%x req_idx=%d\n",
+               ioc->name, mf_dma_addr, req_idx));
+       CHIPREG_WRITE32(&ioc->chip->RequestHiPriFifo, mf_dma_addr);
+}
+
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 /**
  *     mpt_free_msg_frame - Place MPT request frame back on FreeQ.
@@ -7315,6 +7347,7 @@ EXPORT_SYMBOL(mpt_device_driver_register);
 EXPORT_SYMBOL(mpt_device_driver_deregister);
 EXPORT_SYMBOL(mpt_get_msg_frame);
 EXPORT_SYMBOL(mpt_put_msg_frame);
+EXPORT_SYMBOL(mpt_put_msg_frame_hi_pri);
 EXPORT_SYMBOL(mpt_free_msg_frame);
 EXPORT_SYMBOL(mpt_add_sge);
 EXPORT_SYMBOL(mpt_send_handshake_request);
index a8c8080..012be5e 100644 (file)
@@ -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);
index 89695e7..dce1e9c 100644 (file)
@@ -342,7 +342,7 @@ static int mptctl_bus_reset(MPT_IOCTL *ioctl)
        SCSITaskMgmt_t  *pScsiTm;
        MPT_SCSI_HOST   *hd;
        int              ii;
-       int              retval;
+       int              retval=0;
 
 
        ioctl->reset &= ~MPTCTL_RESET_OK;
@@ -395,12 +395,19 @@ static int mptctl_bus_reset(MPT_IOCTL *ioctl)
        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 @@ mptctl_do_mpt_command (struct mpt_ioctl_command karg, void __user *mfPtr)
 
                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
index b9c69bf..fe3b505 100644 (file)
@@ -623,13 +623,7 @@ mptsas_target_reset(MPT_ADAPTER *ioc, u8 channel, u8 id)
 
        DBG_DUMP_TM_REQUEST_FRAME(ioc, (u32 *)mf);
 
-       if (mpt_send_handshake_request(ioc->TaskCtx, ioc,
-           sizeof(SCSITaskMgmt_t), (u32 *)mf, NO_SLEEP)) {
-               mpt_free_msg_frame(ioc, mf);
-               dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "%s, tm handshake failed @%d!!\n",
-                   ioc->name,__FUNCTION__, __LINE__));
-               return 0;
-       }
+       mpt_put_msg_frame_hi_pri(ioc->TaskCtx, ioc, mf);
 
        return 1;
 }
index 5431529..b8b0598 100644 (file)
@@ -1717,12 +1717,18 @@ mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, i
 
        DBG_DUMP_TM_REQUEST_FRAME(ioc, (u32 *)pScsiTm);
 
-       if ((retval = mpt_send_handshake_request(hd->ioc->TaskCtx, hd->ioc,
-               sizeof(SCSITaskMgmt_t), (u32*)pScsiTm, CAN_SLEEP)) != 0) {
-               dfailprintk(hd->ioc, printk(MYIOC_s_ERR_FMT "send_handshake FAILED!"
+       if ((hd->ioc->facts.IOCCapabilities & MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q) &&
+           (hd->ioc->facts.MsgVersion >= MPI_VERSION_01_05))
+               mpt_put_msg_frame_hi_pri(hd->ioc->TaskCtx, hd->ioc, mf);
+       else {
+               retval = mpt_send_handshake_request(hd->ioc->TaskCtx, hd->ioc,
+                       sizeof(SCSITaskMgmt_t), (u32*)pScsiTm, CAN_SLEEP);
+               if (retval) {
+                       dfailprintk(hd->ioc, printk(MYIOC_s_ERR_FMT "send_handshake FAILED!"
                        " (hd %p, ioc %p, mf %p, rc=%d) \n", hd->ioc->name, hd,
                        hd->ioc, mf, retval));
-               goto fail_out;
+                       goto fail_out;
+               }
        }
 
        if(mptscsih_tm_wait_for_completion(hd, timeout) == FAILED) {