1 files changed, 443 insertions, 0 deletions

diff --git a/libusal/scsi-bsd-os.c b/libusal/scsi-bsd-os.c
new file mode 100644
index 0000000..5719505
--- /dev/null
+++ b/libusal/scsi-bsd-os.c
@@ -0,0 +1,443 @@
+/*
+ * 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.
+ *
+ */
+
+/* @(#)scsi-bsd-os.c	1.28 04/01/15 Copyright 1997 J. Schilling */
+/*
+ *	Interface for the BSD/OS user-land raw SCSI implementation.
+ *
+ *	This is a hack, that tries to emulate the functionality
+ *	of the usal driver.
+ *
+ *	Warning: you may change this source, but if you do that
+ *	you need to change the _usal_version and _usal_auth* string below.
+ *	You may not return "schily" for an SCG_AUTHOR request anymore.
+ *	Choose your name instead of "schily" and make clear that the version
+ *	string is related to a modified source.
+ *
+ *	Copyright (c) 1997 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.
+ */
+
+#undef	sense
+
+#define	scsi_sense	bsdi_scsi_sense
+#define	scsi_inquiry	bsdi_scsi_inquiry
+
+/*
+ * Must use -I/sys...
+ * The next two files are in /sys/dev/scsi
+ */
+#include <dev/scsi/scsi.h>
+#include <dev/scsi/scsi_ioctl.h>
+
+/*
+ *	Warning: you may change this source, but if you do that
+ *	you need to change the _usal_version and _usal_auth* string below.
+ *	You may not return "schily" for an SCG_AUTHOR request anymore.
+ *	Choose your name instead of "schily" and make clear that the version
+ *	string is related to a modified source.
+ */
+static	char	_usal_trans_version[] = "scsi-bsd-os.c-1.28";	/* The version for this transport*/
+
+#define	MAX_SCG		16	/* Max # of SCSI controllers */
+#define	MAX_TGT		16
+#define	MAX_LUN		8
+
+struct usal_local {
+	short	usalfiles[MAX_SCG][MAX_TGT][MAX_LUN];
+};
+#define	usallocal(p)	((struct usal_local *)((p)->local))
+
+#include <machine/param.h>
+
+#define	MAX_DMA_BSDI	MAXPHYS		/* More makes problems */
+
+
+static	BOOL	usal_setup(SCSI *usalp, int f, int busno, int tgt, int tlun);
+
+/*
+ * Return version information for the low level SCSI transport code.
+ * This has been introduced to make it easier to trace down problems
+ * in applications.
+ */
+static char *
+usalo_version(SCSI *usalp, int what)
+{
+	if (usalp != (SCSI *)0) {
+		switch (what) {
+
+		case SCG_VERSION:
+			return (_usal_trans_version);
+		/*
+		 * If you changed this source, you are not allowed to
+		 * return "schily" for the SCG_AUTHOR request.
+		 */
+		case SCG_AUTHOR:
+			return (_usal_auth_cdrkit);
+		case SCG_SCCS_ID:
+			return (__sccsid);
+		}
+	}
+	return ((char *)0);
+}
+
+static int
+usalo_help(SCSI *usalp, FILE *f)
+{
+	__usal_help(f, "SCSIRAWCDB", "Generic SCSI for devices known by BSDi",
+		"", "devname:@,lun", "/dev/rsr0a:@,0", FALSE, TRUE);
+	return (0);
+}
+
+static int
+usalo_open(SCSI *usalp, char *device)
+{
+		int	busno	= usal_scsibus(usalp);
+		int	tgt	= usal_target(usalp);
+		int	tlun	= usal_lun(usalp);
+	register int	f;
+	register int	b;
+	register int	t;
+	register int	l;
+	register int	nopen = 0;
+	char		devname[64];
+
+	if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) {
+		errno = EINVAL;
+		if (usalp->errstr)
+			snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
+				"Illegal value for busno, target or lun '%d,%d,%d'",
+				busno, tgt, tlun);
+		return (-1);
+	}
+
+	if (usalp->local == NULL) {
+		usalp->local = malloc(sizeof (struct usal_local));
+		if (usalp->local == NULL)
+			return (0);
+
+		for (b = 0; b < MAX_SCG; b++) {
+			for (t = 0; t < MAX_TGT; t++) {
+				for (l = 0; l < MAX_LUN; l++)
+					usallocal(usalp)->usalfiles[b][t][l] = (short)-1;
+			}
+		}
+	}
+
+	if ((device != NULL && *device != '\0') || (busno == -2 && tgt == -2))
+		goto openbydev;
+
+	if (busno >= 0 && tgt >= 0 && tlun >= 0) {
+
+		snprintf(devname, sizeof (devname),
+					"/dev/su%d-%d-%d", busno, tgt, tlun);
+		f = open(devname, O_RDWR|O_NONBLOCK);
+		if (f < 0) {
+			goto openbydev;
+		}
+		usallocal(usalp)->usalfiles[busno][tgt][tlun] = f;
+		return (1);
+
+	} else for (b = 0; b < MAX_SCG; b++) {
+		for (t = 0; t < MAX_TGT; t++) {
+			for (l = 0; l < MAX_LUN; l++) {
+				snprintf(devname, sizeof (devname),
+						"/dev/su%d-%d-%d", b, t, l);
+				f = open(devname, O_RDWR|O_NONBLOCK);
+/*				fprintf(stderr, "open (%s) = %d\n", devname, f);*/
+
+				if (f < 0) {
+					if (errno != ENOENT &&
+					    errno != ENXIO &&
+					    errno != ENODEV) {
+						if (usalp->errstr)
+							snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
+								"Cannot open '%s'",
+								devname);
+						return (0);
+					}
+				} else {
+					if (usal_setup(usalp, f, b, t, l))
+						nopen++;
+				}
+			}
+		}
+	}
+	/*
+	 * Could not open /dev/su-* or got dev=devname:b,l,l / dev=devname:@,l
+	 * We do the apropriate tests and try our best.
+	 */
+openbydev:
+	if (nopen == 0) {
+		if (device == NULL || device[0] == '\0')
+			return (0);
+		f = open(device, O_RDWR|O_NONBLOCK);
+		if (f < 0) {
+			if (usalp->errstr)
+				snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
+					"Cannot open '%s'",
+					device);
+			return (0);
+		}
+		if (tlun == -2) {	/* If 'lun' is not known, we reject */
+			close(f);
+			errno = EINVAL;
+			return (0);
+		}
+		busno = 0;		/* use fake number, we cannot get it */
+		tgt   = 0;		/* use fake number, we cannot get it */
+		usal_settarget(usalp, busno, tgt, tlun);
+		/* 'lun' has been specified on command line */
+		if (usal_setup(usalp, f, busno, tgt, tlun))
+			nopen++;
+	}
+	return (nopen);
+}
+
+static int
+usalo_close(SCSI *usalp)
+{
+	register int	f;
+	register int	b;
+	register int	t;
+	register int	l;
+
+	if (usalp->local == NULL)
+		return (-1);
+
+	for (b = 0; b < MAX_SCG; b++) {
+		for (t = 0; t < MAX_TGT; t++) {
+			for (l = 0; l < MAX_LUN; l++) {
+				f = usallocal(usalp)->usalfiles[b][t][l];
+				if (f >= 0)
+					close(f);
+				usallocal(usalp)->usalfiles[b][t][l] = (short)-1;
+			}
+		}
+	}
+	return (0);
+}
+
+static BOOL
+usal_setup(SCSI *usalp, int f, int busno, int tgt, int tlun)
+{
+	int	Bus;
+	int	Target;
+	int	Lun;
+	BOOL	onetarget = FALSE;
+
+	if (usal_scsibus(usalp) >= 0 && usal_target(usalp) >= 0 && usal_lun(usalp) >= 0)
+		onetarget = TRUE;
+
+	/*
+	 * Unfortunately there is no way to get the right values from kernel.
+	 */
+	Bus	= busno;
+	Target	= tgt;
+	Lun	= tlun;
+
+	if (usalp->debug > 0) {
+		fprintf((FILE *)usalp->errfile,
+			"Bus: %d Target: %d Lun: %d\n", Bus, Target, Lun);
+	}
+
+	if (Bus >= MAX_SCG || Target >= MAX_TGT || Lun >= MAX_LUN) {
+		close(f);
+		return (FALSE);
+	}
+
+	if (usallocal(usalp)->usalfiles[Bus][Target][Lun] == (short)-1)
+		usallocal(usalp)->usalfiles[Bus][Target][Lun] = (short)f;
+
+	if (onetarget) {
+		if (Bus == busno && Target == tgt && Lun == tlun) {
+			return (TRUE);
+		} else {
+			usallocal(usalp)->usalfiles[Bus][Target][Lun] = (short)-1;
+			close(f);
+		}
+	}
+	return (FALSE);
+}
+
+static long
+usalo_maxdma(SCSI *usalp, long amt)
+{
+	long maxdma = MAX_DMA_BSDI;
+
+	return (maxdma);
+}
+
+static void *
+usalo_getbuf(SCSI *usalp, long amt)
+{
+	if (usalp->debug > 0) {
+		fprintf((FILE *)usalp->errfile,
+			"usalo_getbuf: %ld bytes\n", amt);
+	}
+	usalp->bufbase = malloc((size_t)(amt));
+	return (usalp->bufbase);
+}
+
+static void
+usalo_freebuf(SCSI *usalp)
+{
+	if (usalp->bufbase)
+		free(usalp->bufbase);
+	usalp->bufbase = NULL;
+}
+
+static BOOL
+usalo_havebus(SCSI *usalp, int busno)
+{
+	register int	t;
+	register int	l;
+
+	if (busno < 0 || busno >= MAX_SCG)
+		return (FALSE);
+
+	if (usalp->local == NULL)
+		return (FALSE);
+
+	for (t = 0; t < MAX_TGT; t++) {
+		for (l = 0; l < MAX_LUN; l++)
+			if (usallocal(usalp)->usalfiles[busno][t][l] >= 0)
+				return (TRUE);
+	}
+	return (FALSE);
+}
+
+static int
+usalo_fileno(SCSI *usalp, int busno, int tgt, int tlun)
+{
+	if (busno < 0 || busno >= MAX_SCG ||
+	    tgt < 0 || tgt >= MAX_TGT ||
+	    tlun < 0 || tlun >= MAX_LUN)
+		return (-1);
+
+	if (usalp->local == NULL)
+		return (-1);
+
+	return ((int)usallocal(usalp)->usalfiles[busno][tgt][tlun]);
+}
+
+static int
+usalo_initiator_id(SCSI *usalp)
+{
+	return (-1);
+}
+
+static int
+usalo_isatapi(SCSI *usalp)
+{
+	return (FALSE);
+}
+
+static int
+usalo_reset(SCSI *usalp, int what)
+{
+	/*
+	 * Cannot reset on BSD/OS
+	 */
+	errno = EINVAL;
+	return (-1);
+}
+
+static int
+usalo_send(SCSI *usalp)
+{
+	struct usal_cmd	*sp = usalp->scmd;
+	scsi_user_cdb_t	suc;
+	int		ret = 0;
+
+/*	fprintf((FILE *)usalp->errfile, "f: %d\n", f);*/
+	if (usalp->fd < 0) {
+		sp->error = SCG_FATAL;
+		return (0);
+	}
+
+	/* Zero the structure... */
+	fillbytes(&suc, sizeof (suc), '\0');
+
+	/* Read or write? */
+	if (sp->flags & SCG_RECV_DATA) {
+		suc.suc_flags |= SUC_READ;
+	} else if (sp->size > 0) {
+		suc.suc_flags |= SUC_WRITE;
+	}
+
+	suc.suc_timeout = sp->timeout;
+
+	suc.suc_cdblen = sp->cdb_len;
+	movebytes(sp->cdb.cmd_cdb, suc.suc_cdb, suc.suc_cdblen);
+
+	suc.suc_datalen = sp->size;
+	suc.suc_data = sp->addr;
+
+	if (ioctl(usalp->fd, SCSIRAWCDB, &suc) < 0) {
+		ret  = -1;
+		sp->ux_errno = geterrno();
+		if (sp->ux_errno != ENOTTY)
+			ret = 0;
+	} else {
+		sp->ux_errno = 0;
+		if (suc.suc_sus.sus_status != STS_GOOD)
+			sp->ux_errno = EIO;
+	}
+	fillbytes(&sp->scb, sizeof (sp->scb), '\0');
+	fillbytes(&sp->u_sense.cmd_sense, sizeof (sp->u_sense.cmd_sense), '\0');
+#if 0
+	/*
+	 * Unfortunalety, BSD/OS has no idea of DMA residual count.
+	 */
+	sp->resid = req.datalen - req.datalen_used;
+	sp->sense_count = req.senselen_used;
+#else
+	sp->resid = 0;
+	sp->sense_count = sizeof (suc.suc_sus.sus_sense);
+#endif
+	if (sp->sense_count > SCG_MAX_SENSE)
+		sp->sense_count = SCG_MAX_SENSE;
+	movebytes(suc.suc_sus.sus_sense, sp->u_sense.cmd_sense, sp->sense_count);
+	sp->u_scb.cmd_scb[0] = suc.suc_sus.sus_status;
+
+	switch (suc.suc_sus.sus_status) {
+
+	case STS_GOOD:
+				sp->error = SCG_NO_ERROR;	break;
+	case STS_CMD_TERMINATED:sp->error = SCG_TIMEOUT;	break;
+	case STS_BUSY:		sp->error = SCG_RETRYABLE;	break;
+	case STS_CHECKCOND:	sp->error = SCG_RETRYABLE;	break;
+	case STS_QUEUE_FULL:	sp->error = SCG_RETRYABLE;	break;
+	default:		sp->error = SCG_FATAL;		break;
+	}
+
+	return (ret);
+}
+
+#define	sense	u_sense.Sense
+
+#undef scsi_sense
+#undef scsi_inquiry