[SCSI] aic79xx: Sequencer update

Update sequencer code to Adaptec version 2.0.12-6.3.9.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/aic7xxx/aic79xx.h

@@ -75,8 +75,7 @@ struct scb_platform_data;
 #define INITIATOR_WILDCARD	(~0)
 #define	SCB_LIST_NULL		0xFF00
 #define	SCB_LIST_NULL_LE	(ahd_htole16(SCB_LIST_NULL))
-#define QOUTFIFO_ENTRY_VALID 0x8000
-#define QOUTFIFO_ENTRY_VALID_LE (ahd_htole16(0x8000))
+#define QOUTFIFO_ENTRY_VALID 0x80
 #define SCBID_IS_NULL(scbid) (((scbid) & 0xFF00 ) == SCB_LIST_NULL)
 
 #define SCSIID_TARGET(ahd, scsiid)	\
@@ -1053,6 +1052,13 @@ typedef uint8_t ahd_mode_state;
 
 typedef void ahd_callback_t (void *);
 
+struct ahd_completion
+{
+	uint16_t	tag;
+	uint8_t		sg_status;
+	uint8_t		valid_tag;
+};
+
 struct ahd_softc {
 	bus_space_tag_t           tags[2];
 	bus_space_handle_t        bshs[2];
@@ -1142,11 +1148,11 @@ struct ahd_softc {
 	struct seeprom_config	 *seep_config;
 
 	/* Command Queues */
+	struct ahd_completion	  *qoutfifo;
 	uint16_t		  qoutfifonext;
 	uint16_t		  qoutfifonext_valid_tag;
 	uint16_t		  qinfifonext;
 	uint16_t		  qinfifo[AHD_SCB_MAX];
-	uint16_t		 *qoutfifo;
 
 	/*
 	 * Our qfreeze count.  The sequencer compares

drivers/scsi/aic7xxx/aic79xx.reg

@@ -39,7 +39,7 @@
  *
  * $FreeBSD$
  */
-VERSION = "$Id: //depot/aic7xxx/aic7xxx/aic79xx.reg#70 $"
+VERSION = "$Id: //depot/aic7xxx/aic7xxx/aic79xx.reg#76 $"
 
 /*
  * This file is processed by the aic7xxx_asm utility for use in assembling
@@ -65,13 +65,6 @@ VERSION = "$Id: //depot/aic7xxx/aic7xxx/aic79xx.reg#70 $"
 		mvi	MODE_PTR, MK_MODE(src, dst);			\
 	}
 
-#define TOGGLE_DFF_MODE							\
-	if ((ahd->bugs & AHD_SET_MODE_BUG) != 0) {			\
-		call	toggle_dff_mode_work_around;			\
-	} else {							\
-		xor	MODE_PTR, MK_MODE(M_DFF1, M_DFF1);		\
-	}
-	
 #define RESTORE_MODE(mode)						\
 	if ((ahd->bugs & AHD_SET_MODE_BUG) != 0) {			\
 		mov	mode call set_mode_work_around;			\
@@ -1199,7 +1192,7 @@ register TARGPCISTAT {
 
 /*
  * LQ Packet In
- * The last LQ Packet received
+ * The last LQ Packet recieved
  */
 register LQIN {
 	address			0x020
@@ -3542,10 +3535,34 @@ scratch_ram {
 	COMPLETE_DMA_SCB_HEAD {
 		size		2
 	}
-	/* Counting semaphore to prevent new select-outs */
+	/*
+	 * tail of list of SCBs that have
+	 * completed but need to be uploaded
+	 * to the host prior to being completed.
+	 */
+	COMPLETE_DMA_SCB_TAIL {
+		size		2
+	}
+	/*
+	 * head of list of SCBs that have
+	 * been uploaded to the host, but cannot
+	 * be completed until the QFREEZE is in
+	 * full effect (i.e. no selections pending).
+	 */
+	COMPLETE_ON_QFREEZE_HEAD {
+		size		2
+	}
+	/*
+	 * Counting semaphore to prevent new select-outs
+	 * The queue is frozen so long as the sequencer
+	 * and kernel freeze counts differ.
+	 */
 	QFREEZE_COUNT {
 		size		2
 	}
+	KERNEL_QFREEZE_COUNT {
+		size		2
+	}
 	/*
 	 * Mode to restore on legacy idle loop exit.
 	 */
@@ -3624,6 +3641,17 @@ scratch_ram {
 	QOUTFIFO_ENTRY_VALID_TAG {
 		size		1
 	}
+	/*
+	 * Kernel and sequencer offsets into the queue of
+	 * incoming target mode command descriptors.  The
+	 * queue is full when the KERNEL_TQINPOS == TQINPOS.
+	 */
+	KERNEL_TQINPOS {
+		size		1
+	}
+	TQINPOS {                
+		size		1
+	}
 	/*
 	 * Base address of our shared data with the kernel driver in host
 	 * memory.  This includes the qoutfifo and target mode
@@ -3639,17 +3667,6 @@ scratch_ram {
 	QOUTFIFO_NEXT_ADDR {
 		size		4
 	}
-	/*
-	 * Kernel and sequencer offsets into the queue of
-	 * incoming target mode command descriptors.  The
-	 * queue is full when the KERNEL_TQINPOS == TQINPOS.
-	 */
-	KERNEL_TQINPOS {
-		size		1
-	}
-	TQINPOS {                
-		size		1
-	}
 	ARG_1 {
 		size		1
 		mask	SEND_MSG		0x80
@@ -3951,6 +3968,7 @@ const SG_PREFETCH_ADDR_MASK download
 const SG_SIZEOF download
 const PKT_OVERRUN_BUFOFFSET download
 const SCB_TRANSFER_SIZE	download
+const CACHELINE_MASK download
 
 /*
  * BIOS SCB offsets

drivers/scsi/aic7xxx/aic79xx_inline.h

@@ -839,7 +839,7 @@ ahd_sync_qoutfifo(struct ahd_softc *ahd, int op)
 {
 	ahd_dmamap_sync(ahd, ahd->shared_data_dmat, ahd->shared_data_map.dmamap,
 			/*offset*/0,
-			/*len*/AHD_SCB_MAX * sizeof(uint16_t), op);
+			/*len*/AHD_SCB_MAX * sizeof(struct ahd_completion), op);
 }
 
 static __inline void
@@ -871,8 +871,8 @@ ahd_check_cmdcmpltqueues(struct ahd_softc *ahd)
 	ahd_dmamap_sync(ahd, ahd->shared_data_dmat, ahd->shared_data_map.dmamap,
 			/*offset*/ahd->qoutfifonext * sizeof(*ahd->qoutfifo),
 			/*len*/sizeof(*ahd->qoutfifo), BUS_DMASYNC_POSTREAD);
-	if ((ahd->qoutfifo[ahd->qoutfifonext]
-	     & QOUTFIFO_ENTRY_VALID_LE) == ahd->qoutfifonext_valid_tag)
+	if (ahd->qoutfifo[ahd->qoutfifonext].valid_tag
+	  == ahd->qoutfifonext_valid_tag)
 		retval |= AHD_RUN_QOUTFIFO;
 #ifdef AHD_TARGET_MODE
 	if ((ahd->flags & AHD_TARGETROLE) != 0

drivers/scsi/aic7xxx/aic79xx_osm.c

@@ -1468,6 +1468,30 @@ ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
 	if ((tstate->auto_negotiate & mask) != 0) {
 		scb->flags |= SCB_AUTO_NEGOTIATE;
 		scb->hscb->control |= MK_MESSAGE;
+		} else if (cmd->cmnd[0] == INQUIRY
+			&& (tinfo->curr.offset != 0
+			 || tinfo->curr.width != MSG_EXT_WDTR_BUS_8_BIT
+			 || tinfo->curr.ppr_options != 0)
+			&& (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ)==0) {
+			/*
+			 * The SCSI spec requires inquiry
+			 * commands to complete without
+			 * reporting unit attention conditions.
+			 * Because of this, an inquiry command
+			 * that occurs just after a device is
+			 * reset will result in a data phase
+			 * with mismatched negotiated rates.
+			 * The core already forces a renegotiation
+			 * for reset events that are visible to
+			 * our controller or that we initiate,
+			 * but a third party device reset or a
+			 * hot-plug insertion can still cause this
+			 * issue.  Therefore, we force a re-negotiation
+			 * for every inquiry command unless we
+			 * are async.
+			 */
+			scb->flags |= SCB_NEGOTIATE;
+			scb->hscb->control |= MK_MESSAGE;
 	}
 
 	if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
@@ -2058,6 +2082,7 @@ ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
 	int    paused;
 	int    wait;
 	int    disconnected;
+	int    found;
 	ahd_mode_state saved_modes;
 	unsigned long flags;
 
@@ -2176,7 +2201,8 @@ ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
 	last_phase = ahd_inb(ahd, LASTPHASE);
 	saved_scbptr = ahd_get_scbptr(ahd);
 	active_scbptr = saved_scbptr;
-	if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
+	if (disconnected && ((last_phase != P_BUSFREE) || 
+			     (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0)) {
 		struct scb *bus_scb;
 
 		bus_scb = ahd_lookup_scb(ahd, active_scbptr);
@@ -2194,28 +2220,41 @@ ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
 	 * bus or is in the disconnected state.
 	 */
 	saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
-	if (last_phase != P_BUSFREE
-	 && (SCB_GET_TAG(pending_scb) == active_scbptr
+	if (SCB_GET_TAG(pending_scb) == active_scbptr
 	     || (flag == SCB_DEVICE_RESET
-		 && SCSIID_TARGET(ahd, saved_scsiid) == scmd_id(cmd)))) {
+		 && SCSIID_TARGET(ahd, saved_scsiid) == scmd_id(cmd))) {
 
 		/*
 		 * We're active on the bus, so assert ATN
 		 * and hope that the target responds.
 		 */
 		pending_scb = ahd_lookup_scb(ahd, active_scbptr);
-		pending_scb->flags |= SCB_RECOVERY_SCB|flag;
+		pending_scb->flags |= SCB_RECOVERY_SCB|SCB_DEVICE_RESET;
 		ahd_outb(ahd, MSG_OUT, HOST_MSG);
 		ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
-		scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
+		scmd_printk(KERN_INFO, cmd, "BDR message in message buffer\n");
 		wait = TRUE;
+	} else if (last_phase != P_BUSFREE
+		   && ahd_inb(ahd, SCSIPHASE) == 0) {
+		/*
+		 * SCB is not identified, there
+		 * is no pending REQ, and the sequencer
+		 * has not seen a busfree.  Looks like
+		 * a stuck connection waiting to
+		 * go busfree.  Reset the bus.
+		 */
+		found = ahd_reset_channel(ahd, cmd->device->channel + 'A',
+					  /*Initiate Reset*/TRUE);
+		printf("%s: Issued Channel %c Bus Reset. "
+		       "%d SCBs aborted\n", ahd_name(ahd),
+		       cmd->device->channel + 'A', found);
 	} else if (disconnected) {
 
 		/*
 		 * Actually re-queue this SCB in an attempt
 		 * to select the device before it reconnects.
 		 */
-		pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
+		pending_scb->flags |= SCB_RECOVERY_SCB|flag;
 		ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
 		pending_scb->hscb->cdb_len = 0;
 		pending_scb->hscb->task_attribute = 0;
@@ -2296,16 +2335,17 @@ done:
 		timer.expires = jiffies + (5 * HZ);
 		timer.function = ahd_linux_sem_timeout;
 		add_timer(&timer);
-		printf("Recovery code sleeping\n");
+		printf("%s: Recovery code sleeping\n", ahd_name(ahd));
 		down(&ahd->platform_data->eh_sem);
-		printf("Recovery code awake\n");
+		printf("%s: Recovery code awake\n", ahd_name(ahd));
         	ret = del_timer_sync(&timer);
 		if (ret == 0) {
-			printf("Timer Expired\n");
+			printf("%s: Timer Expired (active %d)\n",
+			       ahd_name(ahd), dev->active);
 			retval = FAILED;
 		}
 	}
-		ahd_unlock(ahd, &flags);
+	ahd_unlock(ahd, &flags);
 	return (retval);
 }