1 files changed, 135 insertions, 77 deletions

diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index b1f68caf9a1d..dc5e996a8944 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -80,6 +80,10 @@ MODULE_VERSION(my_VERSION);
 /*
  *  Other private/forward protos...
  */
+static struct scsi_cmnd * mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i);
+static struct scsi_cmnd * mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i);
+static void     mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd);
+static int      SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *scmd);
 int             mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
 static void     mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq);
 int             mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
@@ -90,7 +94,6 @@ static void	mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx);
 static void     mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply);
 static int      mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd);
 static int      mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout );
-static int      SCPNT_TO_LOOKUP_IDX(struct scsi_cmnd *sc);
 
 static int      mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, int ctx2abort, ulong timeout);
 
@@ -658,12 +661,11 @@ mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
                 printk (MYIOC_s_ERR_FMT
                     "req_idx=%x req_idx_MR=%x mf=%p mr=%p sc=%p\n",
                     ioc->name, req_idx, req_idx_MR, mf, mr,
-                    hd->ScsiLookup[req_idx_MR]);
+                    mptscsih_get_scsi_lookup(ioc, req_idx_MR));
                 return 0;
         }
 
-        sc = hd->ScsiLookup[req_idx];
-        hd->ScsiLookup[req_idx] = NULL;
+        sc = mptscsih_getclear_scsi_lookup(ioc, req_idx);
         if (sc == NULL) {
                 MPIHeader_t *hdr = (MPIHeader_t *)mf;
 
@@ -969,48 +971,32 @@ static void
 mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd)
 {
         MPT_ADAPTER *ioc = hd->ioc;
-        struct scsi_cmnd        *SCpnt;
-        MPT_FRAME_HDR   *mf;
+        struct scsi_cmnd *sc;
+        SCSIIORequest_t *mf = NULL;
         int              ii;
-        int              max = ioc->req_depth;
-
-        dprintk(ioc, printk(MYIOC_s_DEBUG_FMT ": flush_ScsiLookup called\n", ioc->name));
-        for (ii= 0; ii < max; ii++) {
-                if ((SCpnt = hd->ScsiLookup[ii]) != NULL) {
-
-                        /* Command found.
-                         */
-
-                        /* Null ScsiLookup index
-                         */
-                        hd->ScsiLookup[ii] = NULL;
+        int              channel, id;
 
-                        mf = MPT_INDEX_2_MFPTR(ioc, ii);
-                        dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT ": flush: ScsiDone (mf=%p,sc=%p)\n",
-                            ioc->name, mf, SCpnt));
-
-                        /* Free Chain buffers */
-                        mptscsih_freeChainBuffers(ioc, ii);
-
-                        /* Free Message frames */
-                        mpt_free_msg_frame(ioc, mf);
-
-                        if ((unsigned char *)mf != SCpnt->host_scribble)
-                                continue;
-
-                        /* Set status, free OS resources (SG DMA buffers)
-                         * Do OS callback
-                         */
-                        scsi_dma_unmap(SCpnt);
-
-                        SCpnt->result = DID_RESET << 16;
-                        SCpnt->host_scribble = NULL;
-
-                        SCpnt->scsi_done(SCpnt);        /* Issue the command callback */
-                }
+        for (ii= 0; ii < ioc->req_depth; ii++) {
+                sc = mptscsih_getclear_scsi_lookup(ioc, ii);
+                if (!sc)
+                        continue;
+                mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
+                if (!mf)
+                        continue;
+                channel = mf->Bus;
+                id = mf->TargetID;
+                mptscsih_freeChainBuffers(ioc, ii);
+                mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
+                if ((unsigned char *)mf != sc->host_scribble)
+                        continue;
+                scsi_dma_unmap(sc);
+                sc->result = DID_RESET << 16;
+                sc->host_scribble = NULL;
+                sdev_printk(MYIOC_s_INFO_FMT, sc->device,
+                    "completing cmds: fw_channel %d, fw_id %d, sc=%p,"
+                    " mf = %p, idx=%x\n", ioc->name, channel, id, sc, mf, ii);
+                sc->scsi_done(sc);
         }
-
-        return;
 }
 
 /*
@@ -1032,16 +1018,14 @@ mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
 {
         SCSIIORequest_t *mf = NULL;
         int              ii;
-        int              max = hd->ioc->req_depth;
         struct scsi_cmnd *sc;
         struct scsi_lun  lun;
         MPT_ADAPTER *ioc = hd->ioc;
+        unsigned long   flags;
 
-        dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT ": search_running channel %d id %d lun %d max %d\n",
-            ioc->name, vdevice->vtarget->channel, vdevice->vtarget->id, vdevice->lun, max));
-
-        for (ii=0; ii < max; ii++) {
-                if ((sc = hd->ScsiLookup[ii]) != NULL) {
+        spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
+        for (ii = 0; ii < ioc->req_depth; ii++) {
+                if ((sc = ioc->ScsiLookup[ii]) != NULL) {
 
                         mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
                         if (mf == NULL)
@@ -1060,13 +1044,12 @@ mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
                             memcmp(lun.scsi_lun, mf->LUN, 8))
                                 continue;
 
-                        /* Cleanup
-                         */
-                        hd->ScsiLookup[ii] = NULL;
-                        mptscsih_freeChainBuffers(ioc, ii);
-                        mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
                         if ((unsigned char *)mf != sc->host_scribble)
                                 continue;
+                        ioc->ScsiLookup[ii] = NULL;
+                        spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
+                        mptscsih_freeChainBuffers(ioc, ii);
+                        mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
                         scsi_dma_unmap(sc);
                         sc->host_scribble = NULL;
                         sc->result = DID_NO_CONNECT << 16;
@@ -1074,8 +1057,10 @@ mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
                            "fw_id %d, sc=%p, mf = %p, idx=%x\n", ioc->name, vdevice->vtarget->channel,
                            vdevice->vtarget->id, sc, mf, ii);
                         sc->scsi_done(sc);
+                        spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
                 }
         }
+        spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
         return;
 }
 
@@ -1143,10 +1128,10 @@ mptscsih_remove(struct pci_dev *pdev)
 
         sz1=0;
 
-        if (hd->ScsiLookup != NULL) {
+        if (ioc->ScsiLookup != NULL) {
                 sz1 = ioc->req_depth * sizeof(void *);
-                kfree(hd->ScsiLookup);
-                hd->ScsiLookup = NULL;
+                kfree(ioc->ScsiLookup);
+                ioc->ScsiLookup = NULL;
         }
 
         dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
@@ -1463,7 +1448,7 @@ mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
         }
 
         SCpnt->host_scribble = (unsigned char *)mf;
-        hd->ScsiLookup[my_idx] = SCpnt;
+        mptscsih_set_scsi_lookup(ioc, my_idx, SCpnt);
 
         mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
         dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Issued SCSI cmd (%p) mf=%p idx=%d\n",
@@ -1472,7 +1457,6 @@ mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
         return 0;
 
  fail:
-        hd->ScsiLookup[my_idx] = NULL;
         mptscsih_freeChainBuffers(ioc, my_idx);
         mpt_free_msg_frame(ioc, mf);
         return SCSI_MLQUEUE_HOST_BUSY;
@@ -1834,7 +1818,7 @@ mptscsih_abort(struct scsi_cmnd * SCpnt)
 
         /* Find this command
          */
-        if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(SCpnt)) < 0) {
+        if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(ioc, SCpnt)) < 0) {
                 /* Cmd not found in ScsiLookup.
                  * Do OS callback.
                  */
@@ -1870,7 +1854,7 @@ mptscsih_abort(struct scsi_cmnd * SCpnt)
             vdevice->vtarget->channel, vdevice->vtarget->id, vdevice->lun,
             ctx2abort, mptscsih_get_tm_timeout(ioc));
 
-        if (SCPNT_TO_LOOKUP_IDX(SCpnt) == scpnt_idx &&
+        if (SCPNT_TO_LOOKUP_IDX(ioc, SCpnt) == scpnt_idx &&
             SCpnt->serial_number == sn)
                 retval = FAILED;
 
@@ -2551,21 +2535,101 @@ mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR
         }
 }
 
-static int
-SCPNT_TO_LOOKUP_IDX(struct scsi_cmnd *sc)
+/**
+ * mptscsih_get_scsi_lookup
+ *
+ * retrieves scmd entry from ScsiLookup[] array list
+ *
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @i: index into the array
+ *
+ * Returns the scsi_cmd pointer
+ *
+ **/
+static struct scsi_cmnd *
+mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i)
 {
-        MPT_SCSI_HOST *hd;
-        int i;
+        unsigned long   flags;
+        struct scsi_cmnd *scmd;
+
+        spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
+        scmd = ioc->ScsiLookup[i];
+        spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
+
+        return scmd;
+}
+
+/**
+ * mptscsih_getclear_scsi_lookup
+ *
+ * retrieves and clears scmd entry from ScsiLookup[] array list
+ *
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @i: index into the array
+ *
+ * Returns the scsi_cmd pointer
+ *
+ **/
+static struct scsi_cmnd *
+mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i)
+{
+        unsigned long   flags;
+        struct scsi_cmnd *scmd;
+
+        spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
+        scmd = ioc->ScsiLookup[i];
+        ioc->ScsiLookup[i] = NULL;
+        spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
+
+        return scmd;
+}
+
+/**
+ * mptscsih_set_scsi_lookup
+ *
+ * writes a scmd entry into the ScsiLookup[] array list
+ *
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @i: index into the array
+ * @scmd: scsi_cmnd pointer
+ *
+ **/
+static void
+mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd)
+{
+        unsigned long   flags;
 
-        hd = shost_priv(sc->device->host);
+        spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
+        ioc->ScsiLookup[i] = scmd;
+        spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
+}
+
+/**
+ * SCPNT_TO_LOOKUP_IDX
+ *
+ * search's for a given scmd in the ScsiLookup[] array list
+ *
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @scmd: scsi_cmnd pointer
+ *
+ **/
+static int
+SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *sc)
+{
+        unsigned long   flags;
+        int i, index=-1;
 
-        for (i = 0; i < hd->ioc->req_depth; i++) {
-                if (hd->ScsiLookup[i] == sc) {
-                        return i;
+        spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
+        for (i = 0; i < ioc->req_depth; i++) {
+                if (ioc->ScsiLookup[i] == sc) {
+                        index = i;
+                        goto out;
                 }
         }
 
-        return -1;
+ out:
+        spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
+        return index;
 }
 
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
@@ -2574,7 +2638,6 @@ mptscsih_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
 {
         MPT_SCSI_HOST   *hd;
         unsigned long    flags;
-        int             ii;
 
         dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
             ": IOC %s_reset routed to SCSI host driver!\n",
@@ -2630,11 +2693,6 @@ mptscsih_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
                  * Init all control structures.
                  */
 
-                /* ScsiLookup initialization
-                 */
-                for (ii=0; ii < ioc->req_depth; ii++)
-                        hd->ScsiLookup[ii] = NULL;
-
                 /* 2. Chain Buffer initialization
                  */
 
@@ -2772,7 +2830,7 @@ mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
 
         del_timer(&hd->timer);
         req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
-        hd->ScsiLookup[req_idx] = NULL;
+        mptscsih_set_scsi_lookup(ioc, req_idx, NULL);
         pReq = (SCSIIORequest_t *) mf;
 
         if (mf != hd->cmdPtr) {