From 67b46d7b0f684ec9025057bb9004d4760be6593b Mon Sep 17 00:00:00 2001
From: jmz <jmz@FreeBSD.org>
Date: Mon, 27 Oct 1997 21:09:27 +0000
Subject: Use a MODE SELECT command to reset the block size, instead of calling
 the prepare_track() function, which caused fixation problems with some
 drives.

---
 sys/scsi/worm.c | 46 +++++++++++++++++++++++++++++++++-------------
 1 file changed, 33 insertions(+), 13 deletions(-)

(limited to 'sys/scsi/worm.c')

diff --git a/sys/scsi/worm.c b/sys/scsi/worm.c
index 6bbeddf..1f299d3 100644
--- a/sys/scsi/worm.c
+++ b/sys/scsi/worm.c
@@ -43,7 +43,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: worm.c,v 1.45 1997/09/02 20:06:41 bde Exp $
+ *      $Id: worm.c,v 1.46 1997/09/21 22:03:22 gibbs Exp $
  */
 
 #include "opt_bounce.h"
@@ -139,6 +139,7 @@ static errval worm_read_toc(struct scsi_link *sc_link,
 static errval worm_rezero_unit(struct scsi_link *sc_link);
 static errval worm_read_session_info(struct scsi_link *, struct wormio_session_info *);
 static int worm_sense_handler(struct scsi_xfer *);
+static errval worm_set_blksize(struct scsi_link *sc_link, int size);
 
 /* XXX should be moved out to an LKM */
 static errval rf4100_prepare_disk(struct scsi_link *, int dummy, int speed);
@@ -957,6 +958,31 @@ worm_sense_handler(struct scsi_xfer *xs)
     return SCSIRET_CONTINUE;
 }
 
+static errval 
+worm_set_blksize(struct scsi_link *sc_link, int size)
+{
+    struct scsi_mode_select scsi_cmd;
+    struct {
+	struct scsi_mode_header header;
+	struct blk_desc desc;
+    } dat;
+    bzero(&scsi_cmd, sizeof(scsi_cmd));
+    bzero(&dat, sizeof(dat));
+    scsi_cmd.op_code = MODE_SELECT;
+    scsi_cmd.length = sizeof(dat);
+    dat.header.blk_desc_len = sizeof(struct blk_desc);
+    scsi_uto3b(size, dat.desc.blklen);
+    return scsi_scsi_cmd(sc_link,
+			  (struct scsi_generic *) &scsi_cmd,
+			  sizeof(scsi_cmd),
+			  (u_char *) &dat,
+			  sizeof(dat),
+			  /*WORM_RETRIES*/ 4,
+			  5000,
+			  NULL,
+			  SCSI_DATA_OUT);
+}
+
 static void
 worm_drvinit(void *unused)
 {
@@ -1230,12 +1256,9 @@ rf4100_finalize_track(struct scsi_link *sc_link)
 			     60000, /* this may take a while */
 			     NULL,
 			     0);
-	if (!error) {
-	    struct wormio_prepare_track t;
-	    bzero (&t, sizeof (t));
-	    t.track_type = BLOCK_MODE_1;
-	    error = rf4100_prepare_track(sc_link, &t);
-	}
+	if (!error) 
+	    error = worm_set_blksize(sc_link, 2048);
+
 	return error;
 }
 
@@ -1532,12 +1555,9 @@ hp4020i_finalize_track(struct scsi_link *sc_link)
 			     60000, /* this may take a while */
 			     NULL,
 			     0);
-	if (!error) {
-	    struct wormio_prepare_track t;
-	    bzero (&t, sizeof (t));
-	    t.track_type = BLOCK_MODE_1;
-	    error = hp4020i_prepare_track(sc_link, &t);
-	}
+	if (!error) 
+	    error = worm_set_blksize(sc_link, 2048);
+
 	return error;
 }
 
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