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-rw-r--r--wodim/modes.c289
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diff --git a/wodim/modes.c b/wodim/modes.c
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+++ b/wodim/modes.c
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+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)modes.c 1.25 04/03/02 Copyright 1988, 1997-2001, 2004 J. Schilling */
+/*
+ * SCSI mode page handling
+ *
+ * Copyright (c) 1988, 1997-2001, 2004 J. Schilling
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <mconfig.h>
+#include <utypes.h>
+#include <standard.h>
+#include <schily.h>
+#include <usal/usalcmd.h>
+#include <usal/scsireg.h>
+#include <usal/scsitransp.h>
+
+#include "wodim.h"
+
+int scsi_compliant;
+
+static BOOL has_mode_page(SCSI *usalp, int page, char *pagename, int *lenp);
+BOOL get_mode_params(SCSI *usalp, int page, char *pagename, Uchar *modep,
+ Uchar *cmodep, Uchar *dmodep, Uchar *smodep, int *lenp);
+BOOL set_mode_params(SCSI *usalp, char *pagename, Uchar *modep, int len,
+ int save, int secsize);
+
+#define XXX
+
+#ifdef XXX
+static BOOL
+has_mode_page(SCSI *usalp, int page, char *pagename, int *lenp)
+{
+ Uchar mode[0x100];
+ int hdlen;
+ int len = 1; /* Nach SCSI Norm */
+ int try = 0;
+ struct scsi_mode_page_header *mp;
+
+ /*
+ * ATAPI drives (used e.g. by IOMEGA) from y2k have the worst firmware
+ * I've seen. They create DMA buffer overruns if we request less than
+ * 3 bytes with 6 byte mode sense which equals 4 byte with 10 byte mode
+ * sense. In order to prevent repeated bus resets, we remember this
+ * bug.
+ *
+ * IOMEGA claims that they are using Philips clone drives but a Philips
+ * drive I own does not have the problem.
+ */
+ if ((usalp->dflags & DRF_MODE_DMA_OVR) != 0)
+ len = sizeof (struct scsi_mode_header);
+again:
+ fillbytes((caddr_t)mode, sizeof (mode), '\0');
+ if (lenp)
+ *lenp = 0;
+
+ usalp->silent++;
+ (void) unit_ready(usalp);
+/* Maxoptix bringt Aborted cmd 0x0B mit code 0x4E (overlapping cmds)*/
+
+ /*
+ * The Matsushita CW-7502 will sometimes deliver a zeroed
+ * mode page 2A if "Page n default" is used instead of "current".
+ */
+ if (mode_sense(usalp, mode, len, page, 0) < 0) { /* Page n current */
+ usalp->silent--;
+ if (len < (int)sizeof (struct scsi_mode_header) && try == 0) {
+ len = sizeof (struct scsi_mode_header);
+ goto again;
+ }
+ return (FALSE);
+ } else {
+ if (len > 1 && try == 0) {
+ /*
+ * If we come here, we got a hard failure with the
+ * fist try. Remember this (IOMEGA USB) firmware bug.
+ */
+ if ((usalp->dflags & DRF_MODE_DMA_OVR) == 0) {
+ /* XXX if (!nowarn) */
+ errmsgno(EX_BAD,
+ "Warning: controller creates hard SCSI failure when retrieving %s page.\n",
+ pagename);
+ usalp->dflags |= DRF_MODE_DMA_OVR;
+ }
+ }
+ len = ((struct scsi_mode_header *)mode)->sense_data_len + 1;
+ }
+ /*
+ * ATAPI drives as used by IOMEGA may receive a SCSI bus device reset
+ * in between these two mode sense commands.
+ */
+ (void) unit_ready(usalp);
+ if (mode_sense(usalp, mode, len, page, 0) < 0) { /* Page n current */
+ usalp->silent--;
+ return (FALSE);
+ }
+ usalp->silent--;
+
+ if (usalp->verbose)
+ usal_prbytes("Mode Sense Data", mode, len - usal_getresid(usalp));
+ hdlen = sizeof (struct scsi_mode_header) +
+ ((struct scsi_mode_header *)mode)->blockdesc_len;
+ mp = (struct scsi_mode_page_header *)(mode + hdlen);
+ if (usalp->verbose)
+ usal_prbytes("Mode Page Data", (Uchar *)mp, mp->p_len+2);
+
+ if (mp->p_len == 0) {
+ if (!scsi_compliant && try == 0) {
+ len = hdlen;
+ /*
+ * add sizeof page header (page # + len byte)
+ * (should normaly result in len == 14)
+ * this allowes to work with:
+ * Quantum Q210S (wants at least 13)
+ * MD2x (wants at least 4)
+ */
+ len += 2;
+ try++;
+ goto again;
+ }
+ /* XXX if (!nowarn) */
+ errmsgno(EX_BAD,
+ "Warning: controller returns zero sized %s page.\n",
+ pagename);
+ }
+ if (!scsi_compliant &&
+ (len < (int)(mp->p_len + hdlen + 2))) {
+ len = mp->p_len + hdlen + 2;
+
+ /* XXX if (!nowarn) */
+ errmsgno(EX_BAD,
+ "Warning: controller returns wrong size for %s page.\n",
+ pagename);
+ }
+ if (mp->p_code != page) {
+ /* XXX if (!nowarn) */
+ errmsgno(EX_BAD,
+ "Warning: controller returns wrong page %X for %s page (%X).\n",
+ mp->p_code, pagename, page);
+ return (FALSE);
+ }
+
+ if (lenp)
+ *lenp = len;
+ return (mp->p_len > 0);
+}
+#endif
+
+BOOL
+get_mode_params(SCSI *usalp, int page, char *pagename, Uchar *modep,
+ Uchar *cmodep, Uchar *dmodep, Uchar *smodep, int *lenp)
+{
+ int len;
+ BOOL ret = TRUE;
+
+#ifdef XXX
+ if (lenp)
+ *lenp = 0;
+ if (!has_mode_page(usalp, page, pagename, &len)) {
+ if (!usalp->silent) errmsgno(EX_BAD,
+ "Warning: controller does not support %s page.\n",
+ pagename);
+ return (FALSE);
+ }
+ if (lenp)
+ *lenp = len;
+#else
+ if (lenp == 0)
+ len = 0xFF;
+#endif
+
+ if (modep) {
+ fillbytes(modep, 0x100, '\0');
+ usalp->silent++;
+ (void) unit_ready(usalp);
+ usalp->silent--;
+ if (mode_sense(usalp, modep, len, page, 0) < 0) { /* Page x current */
+ errmsgno(EX_BAD, "Cannot get %s data.\n", pagename);
+ ret = FALSE;
+ } else if (usalp->verbose) {
+ usal_prbytes("Mode Sense Data", modep, len - usal_getresid(usalp));
+ }
+ }
+
+ if (cmodep) {
+ fillbytes(cmodep, 0x100, '\0');
+ usalp->silent++;
+ (void) unit_ready(usalp);
+ usalp->silent--;
+ if (mode_sense(usalp, cmodep, len, page, 1) < 0) { /* Page x change */
+ errmsgno(EX_BAD, "Cannot get %s mask.\n", pagename);
+ ret = FALSE;
+ } else if (usalp->verbose) {
+ usal_prbytes("Mode Sense Data", cmodep, len - usal_getresid(usalp));
+ }
+ }
+
+ if (dmodep) {
+ fillbytes(dmodep, 0x100, '\0');
+ usalp->silent++;
+ (void) unit_ready(usalp);
+ usalp->silent--;
+ if (mode_sense(usalp, dmodep, len, page, 2) < 0) { /* Page x default */
+ errmsgno(EX_BAD, "Cannot get default %s data.\n",
+ pagename);
+ ret = FALSE;
+ } else if (usalp->verbose) {
+ usal_prbytes("Mode Sense Data", dmodep, len - usal_getresid(usalp));
+ }
+ }
+
+ if (smodep) {
+ fillbytes(smodep, 0x100, '\0');
+ usalp->silent++;
+ (void) unit_ready(usalp);
+ usalp->silent--;
+ if (mode_sense(usalp, smodep, len, page, 3) < 0) { /* Page x saved */
+ errmsgno(EX_BAD, "Cannot get saved %s data.\n", pagename);
+ ret = FALSE;
+ } else if (usalp->verbose) {
+ usal_prbytes("Mode Sense Data", smodep, len - usal_getresid(usalp));
+ }
+ }
+
+ return (ret);
+}
+
+BOOL
+set_mode_params(SCSI *usalp, char *pagename, Uchar *modep, int len, int save,
+ int secsize)
+{
+ int i;
+
+ ((struct scsi_modesel_header *)modep)->sense_data_len = 0;
+ ((struct scsi_modesel_header *)modep)->res2 = 0;
+
+ i = ((struct scsi_mode_header *)modep)->blockdesc_len;
+ if (i > 0) {
+ i_to_3_byte(
+ ((struct scsi_mode_data *)modep)->blockdesc.nlblock,
+ 0);
+ if (secsize >= 0)
+ i_to_3_byte(((struct scsi_mode_data *)modep)->blockdesc.lblen,
+ secsize);
+ }
+
+ usalp->silent++;
+ (void) unit_ready(usalp);
+ usalp->silent--;
+ if (save == 0 || mode_select(usalp, modep, len, save, usalp->inq->data_format >= 2) < 0) {
+ usalp->silent++;
+ (void) unit_ready(usalp);
+ usalp->silent--;
+ if (mode_select(usalp, modep, len, 0, usalp->inq->data_format >= 2) < 0) {
+ if (usalp->silent == 0) {
+ errmsgno(EX_BAD,
+ "Warning: using default %s data.\n",
+ pagename);
+ usal_prbytes("Mode Select Data", modep, len);
+ }
+ return (FALSE);
+ }
+ }
+ return (TRUE);
+}
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