initial import of NetBSD tree

1 files changed, 204 insertions, 0 deletions

diff --git a/sys/arch/pmax/dev/scsi.c b/sys/arch/pmax/dev/scsi.c
new file mode 100644
index 00000000000..a5f0f310463
--- /dev/null
+++ b/sys/arch/pmax/dev/scsi.c
@@ -0,0 +1,204 @@
+/*	$NetBSD: scsi.c,v 1.4 1994/10/26 21:09:18 cgd Exp $	*/
+
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ralph Campbell.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	@(#)scsi.c	8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * SCSI utility routines for making SCSI device drivers easier.
+ */
+
+#include <sys/param.h>
+
+#include <pmax/dev/device.h>
+#include <pmax/dev/scsi.h>
+
+/*
+ * The error codes for class 0-6 sense data are class specific.
+ * The follow arrays of strings are used to print error messages.
+ */
+static char *Class0Errors[] = {
+	"No sense data",
+	"No index signal",
+	"No seek complete",
+	"Write fault",
+	"Drive not ready",
+	"Drive not selected",
+	"No Track 00",
+	"Multiple drives selected",
+	"No address acknowledged",
+	"Media not loaded",
+	"Insufficient capacity",
+	"Drive timeout",
+};
+static char *Class1Errors[] = {
+	"ID CRC error",
+	"Unrecoverable data error",
+	"ID address mark not found",
+	"Data address mark not found",
+	"Record not found",
+	"Seek error",
+	"DMA timeout error",
+	"Write protected",
+	"Correctable data check",
+	"Bad block found",
+	"Interleave error",
+	"Data transfer incomplete",
+	"Unformatted or bad format on drive",
+	"Self test failed",
+	"Defective track (media errors)",
+};
+static char *Class2Errors[] = {
+	"Invalid command",
+	"Illegal block address",
+	"Aborted",
+	"Volume overflow",
+};
+static char *Class7Errors[] = {
+	"No sense data",
+	"Recoverable error",
+	"Drive not ready",
+	"Media error",
+	"Hardware error",
+	"Illegal request",
+	"Unit attention",
+	"Write protected",
+	"Blank check error",
+	"Vendor error",
+	"Powerup failure",
+	"Abort",
+	"Equal",
+	"Overflow",
+	"Reserved14/miscompare",
+};
+static int scsiNumErrors[] = {
+	sizeof(Class0Errors) / sizeof(char *),
+	sizeof(Class1Errors) / sizeof(char *),
+	sizeof(Class2Errors) / sizeof(char *),
+	0, 0, 0, 0, 0,
+};
+static char **scsiErrors[] = {
+	Class0Errors,
+	Class1Errors,
+	Class2Errors,
+};
+
+/*
+ * Decode the sense data and print a suitable message.
+ */
+scsiPrintSense(sp, len)
+	register ScsiClass7Sense *sp;
+	int len;
+{
+	ScsiClass0Sense *sp0;
+	int class, code;
+
+	if (sp->error7 != 0x70) {
+		sp0 = (ScsiClass0Sense *)sp;
+		class = sp0->error >> 4;
+		code = sp0->error & 0xF;
+		if (code >= scsiNumErrors[class])
+			printf("sense error 0x%x", sp0->error);
+		else
+			printf("%s", scsiErrors[class][code]);
+		if (sp->valid)
+			printf(", blk %d", (sp0->highAddr << 16) |
+				(sp0->midAddr << 8) | sp0->lowAddr);
+	} else {
+		if (sp->key >= sizeof(Class7Errors) / sizeof(char *))
+			printf("sense class 7 error 0x%x", sp->key);
+		else
+			printf("%s", Class7Errors[sp->key]);
+		if (sp->fileMark)
+			printf(", file mark seen");
+		if (sp->endOfMedia)
+			printf(", end of media seen");
+		if (sp->badBlockLen)
+			printf(", block length mis-match");
+		if (sp->valid)
+			printf(", blk %d", (sp->info1 << 24) |
+				(sp->info2 << 16) | (sp->info3 << 8) |
+				sp->info4);
+	}
+	printf("\n");
+}
+
+/*
+ * Setup a command block for a SCSI Group0 command.
+ */
+void
+scsiGroup0Cmd(cmd, lun, block, count, c)
+	unsigned cmd;			/* group0 SCSI command */
+	unsigned lun;			/* Logical Unit Number */
+	register unsigned block;	/* starting block number for transfer */
+	unsigned count;			/* # of sectors/bytes to transfer */
+	register ScsiGroup0Cmd *c;	/* command to be filled in */
+{
+
+	c->command = cmd;
+	c->unitNumber = lun;
+	c->highAddr = block >> 16;
+	c->midAddr = block >> 8;
+	c->lowAddr = block;
+	c->blockCount = count;
+	c->control = 0;
+}
+
+/*
+ * Setup a command block for a SCSI Group1 command.
+ */
+void
+scsiGroup1Cmd(cmd, lun, block, count, c)
+	unsigned cmd;			/* group0 SCSI command */
+	unsigned lun;			/* Logical Unit Number */
+	register unsigned block;	/* starting block number for transfer */
+	unsigned count;			/* # of sectors/bytes to transfer */
+	register ScsiGroup1Cmd *c;	/* command to be filled in */
+{
+
+	c->command = cmd;
+	c->unitNumber = lun;
+	c->pad1 = 0;
+	c->highAddr = block >> 24;
+	c->midHighAddr = block >> 16;
+	c->midLowAddr = block >> 8;
+	c->lowAddr = block;
+	c->pad2 = 0;
+	c->highBlockCount = count >> 8;
+	c->lowBlockCount = count;
+	c->control = 0;
+}