>From: vak@zebub.msk.su (Serge V.Vakulenko)

Date: Thu, 30 Sep 1993 15:13:17 +0300

Description:
	Old wt driver is too incomplete and buggy.
	It does not support Archive controllers, BSD-like
	tape ioctls, multiple tape controllers, different
	tape density etc.
Fix:
	This driver is a replacement of the old one.
	It was not tested on different controllers, though.

	This is the streamer tape driver for 386bsd and FreeBSD,
	which supports Wangtek and Archive controllers.
	It was developed as a replacement of the old Wangtek
	tape driver from CMU.

In comparison with the CMU driver, this version has the following enhancements:
1) Support for Archive SC402 and SC499 tape controllers added.
2) Support for up to three tape controllers on the same machine.
3) Support for BSD-style ioctls MTIOCGET, MTIOCTOP.
   Mt command now works adequately with this driver.
4) Asynchronous REWIND and FSF operations, close() will not wait
   until they finish.  The next open() will wait for it instead.
5) Use of WTQICMD ioctl is limited to ERASE and RETENS operations.
   This prevents the user from locking the tape driver by strange
   tape operations.
6) Tape density switching added.
7) The status of the process, blocked on the tape operation,
   is displayed at the WCHAN column of the `ps' command as:

	wtread    reading data from the tape
	wtwrite   writing data to the tape
	wtrfm     reading the tape marker
	wtwfm     writing the tape marker
	wtrew     rewinding the tape
	wterase   doing WTQICMD ERASE operation
	wtretens  doing WTQICMD RETENS operation
	wtorew    doing MTIOCTOP REW/OFFL operation
	wtorfm    doing MTIOCTOP FSF operation
	wtowfm    doing MTIOCTOP WEOF operation

Block interface (writing blocks less than 2048 bytes) is not functioning
pwoperly.  Use raw interface instead.

1 files changed, 74 insertions, 59 deletions

diff --git a/sys/i386/isa/wtreg.h b/sys/i386/isa/wtreg.h
index 8f79ca1..1f6c463 100644
--- a/sys/i386/isa/wtreg.h
+++ b/sys/i386/isa/wtreg.h
@@ -1,40 +1,27 @@
-/*-
- * Copyright (c) 1991 The Regents of the University of California.
- * All rights reserved.
+/*
+ * Streamer tape driver for 386bsd and FreeBSD.
+ * Supports Archive QIC-02 and Wangtek QIC-02/QIC-36 boards.
+ *
+ * Copyright (C) 1993 by:
+ *      Sergey Ryzhkov       <sir@kiae.su>
+ *      Serge Vakulenko      <vak@zebub.msk.su>
+ *
+ * Version 1.1, Fri Sep 24 02:14:42 MSD 1993
  *
- * 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.
+ * Placed in the public domain with NO WARRANTIES, not even the implied
+ * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  *
- * 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.
+ * Authors grant any other persons or organisations permission to use
+ * or modify this software as long as this message is kept with the software,
+ * all derivative works or modified versions.
  *
- *	@(#)wtreg.h	7.1 (Berkeley) 5/9/91
+ * This driver is derived from the old 386bsd Wangtek streamer tape driver,
+ * made by Robert Baron at CMU, based on Intel sources.
+ * Authors thank Robert Baron, CMU and Intel and retain here
+ * the original CMU copyright notice.
  */
 
 /*
- *
  * Copyright (c) 1989 Carnegie-Mellon University.
  * All rights reserved.
  *
@@ -61,35 +48,63 @@
  * rights to redistribute these changes.
  */
 
-/* 
- * HISTORY
- * $Log:	wtreg.h,v $
- * Revision 2.2.1.1  90/01/08  13:29:25  rvb
- * 	Add Intel copyright.
- * 	[90/01/08            rvb]
- * 
- * Revision 2.2  89/09/25  12:33:09  rvb
- * 	Driver was provided by Intel 9/18/89.
- * 	[89/09/23            rvb]
- * 
- */
+/* ioctl for direct QIC commands */
+#define WTQICMD         _IO('W', 0)
 
-/*
- *
- *  Copyright 1988, 1989 by Intel Corporation
- *
- */
+/* QIC-02 commands allowed for WTQICMD */
+#define QIC_ERASE       0x22
+#define QIC_RETENS      0x24
 
-/*
- *  wtioctl.h
- *   defines ioctl parameters for direct QIC commands
- */
+/* internal QIC-02 commands */
+#define QIC_RDDATA      0x80    /* read data */
+#define QIC_READFM      0xa0    /* read file mark */
+#define QIC_WRTDATA     0x40    /* write data */
+#define QIC_WRITEFM     0x60    /* write file mark */
+#define QIC_RDSTAT      0xc0    /* read status command */
+#define QIC_REWIND      0x21    /* rewind command (position+bot) */
+#define QIC_FMT11       0x26    /* set format QIC-11 */
+#define QIC_FMT24       0x27    /* set format QIC-24 */
+#define QIC_FMT120      0x28    /* set format QIC-120 */
+#define QIC_FMT150      0x29    /* set format QIC-150 */
+
+/* tape driver flags */
+#define TPINUSE         0x0001  /* tape is already open */
+#define TPREAD          0x0002  /* tape is only open for reading */
+#define TPWRITE         0x0004  /* tape is only open for writing */
+#define TPSTART         0x0008  /* tape must be rewound and reset */
+#define TPRMARK         0x0010  /* read file mark command outstanding */
+#define TPWMARK         0x0020  /* write file mark command outstanding */
+#define TPREW           0x0040  /* rewind command outstanding */
+#define TPEXCEP         0x0080  /* i/o exception flag */
+#define TPVOL           0x0100  /* read file mark or hit end of tape */
+#define TPWO            0x0200  /* write command outstanding */
+#define TPRO            0x0400  /* read command outstanding */
+#define TPWANY          0x0800  /* write command requested */
+#define TPRANY          0x1000  /* read command requested */
+#define TPWP            0x2000  /* write protect error seen */
+#define TPTIMER         0x4000  /* timer() is active */
+#define TPACTIVE        0x8000  /* dma i/o active */
 
-#define	WTIOC	('W'<<8)
-#define	WTQICMD	(WTIOC|0)
+/* controller error register bits */
+#define TP_FIL          0x0001  /* File mark detected */
+#define TP_BNL          0x0002  /* Block not located */
+#define TP_UDA          0x0004  /* Unrecoverable data error */
+#define TP_EOM          0x0008  /* End of media */
+#define TP_WRP          0x0010  /* Write protected cartridge */
+#define TP_USL          0x0020  /* Unselected drive */
+#define TP_CNI          0x0040  /* Cartridge not in place */
+#define TP_ST0          0x0080  /* Status byte 0 bits */
+#define TP_ST0MASK      0x00ff  /* Status byte 0 mask */
+#define TP_POR          0x0100  /* Power on/reset occurred */
+#define TP_RES1         0x0200  /* Reserved for end of media */
+#define TP_RES2         0x0400  /* Reserved for bus parity */
+#define TP_BOM          0x0800  /* Beginning of media */
+#define	TP_MBD		0x1000	/* Marginal block detected */
+#define	TP_NDT		0x2000	/* No data detected */
+#define TP_ILL          0x4000  /* Illegal command - should not happen! */
+#define	TP_ST1		0x8000	/* Status byte 1 bits */
+#define TP_ST1MASK      0xff00  /* Status byte 1 mask */
 
-/* QIC commands allowed */
-#define	SELECT	0x01
-#define	REWIND	0x21
-#define	ERASE	0x22
-#define	RETENS	0x24
+/* formats for printing flags and error values */
+#define WTDS_BITS "\20\1inuse\2read\3write\4start\5rmark\6wmark\7rew\10excep\11vol\12wo\13ro\14wany\15rany\16wp\17timer\20active"
+#define WTER_BITS "\20\1eof\2bnl\3uda\4eom\5wrp\6usl\7cni\11por\12res1\13res2\14bom\15mbd\16ndt\17ill"