From 9d6ae322642d37555bc67ba89152b17be46b5393 Mon Sep 17 00:00:00 2001
From: gibbs <gibbs@FreeBSD.org>
Date: Sat, 31 Aug 2002 06:51:15 +0000
Subject: [PATCH] Enable card interrupts in our OSM rather than in the core.
 This ensures that we don't enter our interrupt handler until all OSM
 components it might reference have been fully initialized during attach.

Remove vestiges of untagged queue handling.

Add hints to ahd_get_scb() so it knows what type of SCB collision
management to perform for each new transaction.

Properly disable/enable IU_REQ with changes in tagged queuing and
disconnection settings passed in by CAM.
---
 sys/dev/aic7xxx/aic79xx_osm.c | 48 +++++++++++++++++++++--------------
 1 file changed, 29 insertions(+), 19 deletions(-)

diff --git a/sys/dev/aic7xxx/aic79xx_osm.c b/sys/dev/aic7xxx/aic79xx_osm.c
index 2d6f466818e..944c3079ea4 100644
--- a/sys/dev/aic7xxx/aic79xx_osm.c
+++ b/sys/dev/aic7xxx/aic79xx_osm.c
@@ -1,7 +1,8 @@
 /*
  * Bus independent FreeBSD shim for the aic7xxx based adaptec SCSI controllers
  *
- * Copyright (c) 1994-2001 Justin T. Gibbs.
+ * Copyright (c) 1994-2002 Justin T. Gibbs.
+ * Copyright (c) 2001-2002 Adaptec Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -28,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#15 $
+ * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#22 $
  *
  * $FreeBSD$
  */
@@ -170,13 +171,15 @@ ahd_attach(struct ahd_softc *ahd)
 fail:
 	ahd->platform_data->sim = sim;
 	ahd->platform_data->path = path;
-	ahd_unlock(ahd, &s);
-
-	if (count != 0)
+	if (count != 0) {
 		/* We have to wait until after any system dumps... */
 		ahd->platform_data->eh =
 		    EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
 					  ahd, SHUTDOWN_PRI_DEFAULT);
+		ahd_intr_enable(ahd, TRUE);
+	}
+
+	ahd_unlock(ahd, &s);
 
 	return (count);
 }
@@ -208,16 +211,6 @@ ahd_done(struct ahd_softc *ahd, struct scb *scb)
 
 	ccb = scb->io_ctx;
 	LIST_REMOVE(scb, pending_links);
-	if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
-		struct scb_tailq *untagged_q;
-		int target_offset;
-
-		target_offset = SCB_GET_TARGET_OFFSET(ahd, scb);
-		untagged_q = &ahd->untagged_queues[target_offset];
-		TAILQ_REMOVE(untagged_q, scb, links.tqe);
-		scb->flags &= ~SCB_UNTAGGEDQ;
-		ahd_run_untagged_queue(ahd, untagged_q);
-	}
 
 	untimeout(ahd_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch);
 
@@ -415,6 +408,9 @@ ahd_action(struct cam_sim *sim, union ccb *ccb)
 	{
 		struct	scb *scb;
 		struct	hardware_scb *hscb;	
+		struct	ahd_initiator_tinfo *tinfo;
+		struct	ahd_tmode_tstate *tstate;
+		u_int	col_idx;
 
 		if ((ahd->flags & AHD_INITIATORROLE) == 0
 		 && (ccb->ccb_h.func_code == XPT_SCSI_IO
@@ -428,7 +424,17 @@ ahd_action(struct cam_sim *sim, union ccb *ccb)
 		 * get an scb to use.
 		 */
 		ahd_lock(ahd, &s);
-		if ((scb = ahd_get_scb(ahd)) == NULL) {
+		tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
+					    target_id, &tstate);
+		if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
+		 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
+		 || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
+			col_idx = AHD_NEVER_COL_IDX;
+		} else {
+			col_idx = AHD_BUILD_COL_IDX(target_id,
+						    ccb->ccb_h.target_lun);
+		}
+		if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
 	
 			xpt_freeze_simq(sim, /*count*/1);
 			ahd->flags |= AHD_RESOURCE_SHORTAGE;
@@ -818,7 +824,9 @@ ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 	}
 
 	if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
-	 || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)) {
+	 || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
+	 || ((cts->valid & CCB_TRANS_TQ_VALID) != 0)
+	 || ((cts->valid & CCB_TRANS_DISC_VALID) != 0)) {
 		u_int ppr_options;
 		u_int maxsync;
 
@@ -830,6 +838,10 @@ ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 				    | MSG_EXT_PPR_DT_REQ;
 		}
 
+		if ((*tagenable & devinfo.target_mask) == 0
+		 || (*discenable & devinfo.target_mask) == 0)
+			ppr_options &= ~MSG_EXT_PPR_IU_REQ;
+
 		ahd_find_syncrate(ahd, &cts->sync_period,
 				  &ppr_options, maxsync);
 		ahd_validate_offset(ahd, /*tinfo limit*/NULL,
@@ -1131,8 +1143,6 @@ ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 		    timeout(ahd_timeout, (caddr_t)scb, time);
 	}
 
-	scb->flags |= SCB_ACTIVE;
-
 	if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
 		/* Define a mapping from our tag to the SCB. */
 		ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
-- 
2.45.2