Merge sd stuff from NetBSD-current. Helps with LS-120, ZIP

More SCSI logic from NetBSD-current

Some tape fixes. ATAPI tapes do not work yet for most operations.

1 files changed, 303 insertions, 0 deletions

diff --git a/sys/scsi/sd_scsi.c b/sys/scsi/sd_scsi.c
new file mode 100644
index 00000000000..fb230f79d23
--- /dev/null
+++ b/sys/scsi/sd_scsi.c
@@ -0,0 +1,303 @@
+/*	$OpenBSD: sd_scsi.c,v 1.1 1999/07/25 07:09:19 csapuntz Exp $	*/
+/*	$NetBSD: sd_scsi.c,v 1.8 1998/10/08 20:21:13 thorpej Exp $	*/
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Charles M. Hannum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Originally written by Julian Elischer (julian@dialix.oz.au)
+ * for TRW Financial Systems for use under the MACH(2.5) operating system.
+ *
+ * TRW Financial Systems, in accordance with their agreement with Carnegie
+ * Mellon University, makes this software available to CMU to distribute
+ * or use in any manner that they see fit as long as this message is kept with
+ * the software. For this reason TFS also grants any other persons or
+ * organisations permission to use or modify this software.
+ *
+ * TFS supplies this software to be publicly redistributed
+ * on the understanding that TFS is not responsible for the correct
+ * functioning of this software in any circumstances.
+ *
+ * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/buf.h>
+#include <sys/malloc.h>
+#include <sys/errno.h>
+#include <sys/device.h>
+#include <sys/disk.h>
+#include <sys/conf.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_disk.h>
+#include <scsi/scsiconf.h>
+#include <scsi/sdvar.h>
+
+struct sd_scsibus_mode_sense_data {
+	struct scsi_mode_header header;
+	struct scsi_blk_desc blk_desc;
+	union scsi_disk_pages pages;
+};
+
+static int	sd_scsibus_mode_sense __P((struct sd_softc *,
+		    struct sd_scsibus_mode_sense_data *, int, int));
+static int	sd_scsibus_get_parms __P((struct sd_softc *,
+		    struct disk_parms *, int));
+static int	sd_scsibus_get_optparms __P((struct sd_softc *,
+		    struct disk_parms *, int));
+static void	sd_scsibus_flush __P((struct sd_softc *, int));
+
+const struct sd_ops sd_scsibus_ops = {
+	sd_scsibus_get_parms,
+	sd_scsibus_flush,
+};
+
+static int
+sd_scsibus_mode_sense(sd, scsi_sense, page, flags)
+	struct sd_softc *sd;
+	struct sd_scsibus_mode_sense_data *scsi_sense;
+	int page, flags;
+{
+	struct scsi_mode_sense scsi_cmd;
+
+	/*
+	 * Make sure the sense buffer is clean before we do
+	 * the mode sense, so that checks for bogus values of
+	 * 0 will work in case the mode sense fails.
+	 */
+	bzero(scsi_sense, sizeof(*scsi_sense));
+
+	bzero(&scsi_cmd, sizeof(scsi_cmd));
+	scsi_cmd.opcode = MODE_SENSE;
+	scsi_cmd.page = page;
+	scsi_cmd.length = 0x20;
+	/*
+	 * If the command worked, use the results to fill out
+	 * the parameter structure
+	 */
+	return (scsi_scsi_cmd(sd->sc_link,
+	    (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd),
+	    (u_char *)scsi_sense, sizeof(*scsi_sense),
+	    SDRETRIES, 6000, NULL, flags | SCSI_DATA_IN | SCSI_SILENT));
+}
+
+static int
+sd_scsibus_get_optparms(sd, dp, flags)
+	struct sd_softc *sd;
+	struct disk_parms *dp;
+	int flags;
+{
+	struct scsi_mode_sense scsi_cmd;
+	struct sd_scsibus_mode_sense_data scsi_sense;
+	u_long sectors;
+	int error;
+
+	dp->blksize = 512;
+	if ((sectors = scsi_size(sd->sc_link, flags)) == 0)
+		return (SDGP_RESULT_OFFLINE);		/* XXX? */
+
+	/* XXX
+	 * It is better to get the following params from the
+	 * mode sense page 6 only (optical device parameter page).
+	 * However, there are stupid optical devices which does NOT
+	 * support the page 6. Ghaa....
+	 */
+	bzero(&scsi_cmd, sizeof(scsi_cmd));
+	scsi_cmd.opcode = MODE_SENSE;
+	scsi_cmd.page = 0x3f;	/* all pages */
+	scsi_cmd.length = sizeof(struct scsi_mode_header) +
+	    sizeof(struct scsi_blk_desc);
+
+	if ((error = scsi_scsi_cmd(sd->sc_link,  
+	    (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd),  
+	    (u_char *)&scsi_sense, sizeof(scsi_sense), SDRETRIES,
+	    6000, NULL, flags | SCSI_DATA_IN)) != 0)
+		return (SDGP_RESULT_OFFLINE);		/* XXX? */
+
+	dp->blksize = _3btol(scsi_sense.blk_desc.blklen);
+	if (dp->blksize == 0) 
+		dp->blksize = 512;
+
+	/*
+	 * Create a pseudo-geometry.
+	 */
+	dp->heads = 64;
+	dp->sectors = 32;
+	dp->cyls = sectors / (dp->heads * dp->sectors);
+	dp->disksize = sectors;
+
+	return (SDGP_RESULT_OK);
+}
+
+/*
+ * Get the scsi driver to send a full inquiry to the * device and use the
+ * results to fill out the disk parameter structure.
+ */
+static int
+sd_scsibus_get_parms(sd, dp, flags)
+	struct sd_softc *sd;
+	struct disk_parms *dp;
+	int flags;
+{
+	struct sd_scsibus_mode_sense_data scsi_sense;
+	u_long sectors;
+	int page;
+	int error;
+
+	dp->rot_rate = 3600;		/* XXX any way of getting this? */
+
+	/*
+	 * If offline, the SDEV_MEDIA_LOADED flag will be
+	 * cleared by the caller if necessary.
+	 */
+	if (sd->type == T_OPTICAL)
+		return (sd_scsibus_get_optparms(sd, dp, flags));
+
+	if ((error = sd_scsibus_mode_sense(sd, &scsi_sense, page = 4,
+	    flags)) == 0) {
+		SC_DEBUG(sd->sc_link, SDEV_DB3,
+		    ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
+		    _3btol(scsi_sense.pages.rigid_geometry.ncyl),
+		    scsi_sense.pages.rigid_geometry.nheads,
+		    _2btol(scsi_sense.pages.rigid_geometry.st_cyl_wp),
+		    _2btol(scsi_sense.pages.rigid_geometry.st_cyl_rwc),
+		    _2btol(scsi_sense.pages.rigid_geometry.land_zone)));
+
+		/*
+		 * KLUDGE!! (for zone recorded disks)
+		 * give a number of sectors so that sec * trks * cyls
+		 * is <= disk_size
+		 * can lead to wasted space! THINK ABOUT THIS !
+		 */
+		dp->heads = scsi_sense.pages.rigid_geometry.nheads;
+		dp->cyls = _3btol(scsi_sense.pages.rigid_geometry.ncyl);
+		dp->blksize = _3btol(scsi_sense.blk_desc.blklen);
+
+		if (dp->heads == 0 || dp->cyls == 0)
+			goto fake_it;
+
+		if (dp->blksize == 0)
+			dp->blksize = 512;
+
+		sectors = scsi_size(sd->sc_link, flags);
+		dp->disksize = sectors;
+		sectors /= (dp->heads * dp->cyls);
+		dp->sectors = sectors;	/* XXX dubious on SCSI */
+
+		return (SDGP_RESULT_OK);
+	}
+
+	if ((error = sd_scsibus_mode_sense(sd, &scsi_sense, page = 5,
+	    flags)) == 0) {
+		dp->heads = scsi_sense.pages.flex_geometry.nheads;
+		dp->cyls = _2btol(scsi_sense.pages.flex_geometry.ncyl);
+		dp->blksize = _3btol(scsi_sense.blk_desc.blklen);
+		dp->sectors = scsi_sense.pages.flex_geometry.ph_sec_tr;
+		dp->disksize = dp->heads * dp->cyls * dp->sectors;
+		if (dp->disksize == 0)
+			goto fake_it;
+
+		if (dp->blksize == 0)
+			dp->blksize = 512;
+
+		return (SDGP_RESULT_OK);
+	}
+
+fake_it:
+	if ((sd->sc_link->quirks & SDEV_NOMODESENSE) == 0) {
+		if (error == 0)
+			printf("%s: mode sense (%d) returned nonsense",
+			    sd->sc_dev.dv_xname, page);
+		else
+			printf("%s: could not mode sense (4/5)",
+			    sd->sc_dev.dv_xname);
+		printf("; using fictitious geometry\n");
+	}
+	/*
+	 * use adaptec standard fictitious geometry
+	 * this depends on which controller (e.g. 1542C is
+	 * different. but we have to put SOMETHING here..)
+	 */
+	sectors = scsi_size(sd->sc_link, flags);
+	dp->heads = 64;
+	dp->sectors = 32;
+	dp->cyls = sectors / (64 * 32);
+	dp->blksize = 512;
+	dp->disksize = sectors;
+	return (SDGP_RESULT_OK);
+}
+
+static void
+sd_scsibus_flush(sd, flags)
+	struct sd_softc *sd;
+	int flags;
+{
+	struct scsi_link *sc_link = sd->sc_link;
+	struct scsi_synchronize_cache sync_cmd;
+
+	/*
+	 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE.
+	 * We issue with address 0 length 0, which should be
+	 * interpreted by the device as "all remaining blocks
+	 * starting at address 0".  We ignore ILLEGAL REQUEST
+	 * in the event that the command is not supported by
+	 * the device, and poll for completion so that we know
+	 * that the cache has actually been flushed.
+	 *
+	 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE
+	 * command, as indicated by our quirks flags.
+	 *
+	 * XXX What about older devices?
+	 */
+	if ((sc_link->scsi_version & SID_ANSII) >= 2 &&
+	    (sc_link->quirks & SDEV_NOSYNCCACHE) == 0) {
+		bzero(&sync_cmd, sizeof(sync_cmd));
+		sync_cmd.opcode = SYNCHRONIZE_CACHE;
+
+		if (scsi_scsi_cmd(sc_link,
+		    (struct scsi_generic *)&sync_cmd, sizeof(sync_cmd),
+		    NULL, 0, SDRETRIES, 100000, NULL,
+		    flags|SCSI_IGNORE_ILLEGAL_REQUEST))
+			printf("%s: WARNING: cache synchronization failed\n",
+			    sd->sc_dev.dv_xname);
+		else
+			sd->flags |= SDF_FLUSHING;
+	}
+}