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Andreas Klemm's tape erase patches from 1.1.5.1

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Submitted by:	andreas
This commit is contained in:
Jordan K. Hubbard 1994-10-28 13:19:42 +00:00
parent 94a92413cd
commit 7366bf01ab
3 changed files with 72 additions and 3 deletions
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20
sys/scsi/scsi_tape.h
View File

@ -21,7 +21,7 @@
/*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
* $Id: scsi_tape.h,v 1.8 1993/11/18 05:02:57 rgrimes Exp $
* $Id: scsi_tape.h,v 1.9 1994/09/28 20:16:42 se Exp $
*/
#ifndef SCSI_SCSI_TAPE_H
#define SCSI_SCSI_TAPE_H 1
@ -72,6 +72,23 @@ struct scsi_rewind
u_char control;
} rewind;
/*
** Tape erase - AKL: Andreas Klemm <andreas@knobel.gun.de>
*/
struct scsi_erase
{
u_char op_code;
u_char byte2;
#define SE_LONG 0x01 /*
** Archive Viper 2525 doesn't allow short
** erase, other tapes possibly don't allow
** that, too.
*/
#define SE_IMMED 0x02
u_char unused[3];
u_char control;
} erase;
struct scsi_load
{
u_char op_code;
@ -104,6 +121,7 @@ struct scsi_blk_limits
#define WRITE_COMMAND_TAPE 0x0a
#define WRITE_FILEMARKS 0x10
#define SPACE 0x11
#define ERASE 0x19 /* AKL */
#define LOAD_UNLOAD 0x1b /* same as above */

47
sys/scsi/st.c
View File

@ -12,7 +12,7 @@
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* $Id: st.c,v 1.20 1994/10/19 00:09:47 wollman Exp $
* $Id: st.c,v 1.21 1994/10/23 21:27:59 wollman Exp $
*/
/*
@ -153,6 +153,7 @@ static struct rogues gallery[] = /* ends with an all-null entry */
errval st_space __P((u_int32 unit, int32 number, u_int32 what, u_int32 flags));
errval st_rewind __P((u_int32 unit, boolean immed, u_int32 flags));
errval st_erase __P((u_int32 unit, boolean immed, u_int32 flags)); /* AKL */
errval st_mode_sense __P((u_int32 unit, u_int32 flags));
errval st_decide_mode __P((u_int32 unit, boolean first_read));
errval st_rd_blk_lim __P((u_int32 unit, u_int32 flags));
@ -1229,6 +1230,9 @@ stioctl(dev, cmd, arg, flag)
case MTREW: /* rewind */
errcode = st_rewind(unit, FALSE, flags);
break;
case MTERASE: /* erase - AKL */
errcode = st_erase(unit, FALSE, flags);
break;
case MTOFFL: /* rewind and put the drive offline */
st_unmount(unit, EJECT);
break;
@ -1795,6 +1799,47 @@ st_rewind(unit, immed, flags)
flags));
}
/*
** Erase the device - AKL: Andreas Klemm <andreas@knobel.gun.de>
*/
errval
st_erase(unit, immed, flags)
u_int32 unit, flags;
boolean immed;
{
struct scsi_erase scsi_cmd;
struct st_data *st = st_data[unit];
errval error;
int32 nmarks;
error = st_chkeod(unit, FALSE, &nmarks, flags);
if (error != ESUCCESS)
return (error);
/*
** AKL: Archive Viper 2525 technical manual 5.7 (ERASE 19h):
** tape has to be positioned to BOT first before erase command
** is issued or command is rejected. So we rewind the tape first
** and exit with an error, if the tape can't be rewinded.
*/
error = st_rewind(unit, FALSE, SCSI_SILENT);
if (error != ESUCCESS)
return (error);
st->flags &= ~ST_PER_ACTION;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = ERASE;
scsi_cmd.byte2 = SE_LONG; /* LONG_ERASE - AKL */
scsi_cmd.byte2 += immed ? SE_IMMED : 0; /* immed bit is here the 2nd! */
return (scsi_scsi_cmd(st->sc_link,
(struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd),
0,
0,
ST_RETRIES,
immed ? 5000 : 300000, /* 5 sec or 5 min */
NULL,
flags));
}
#ifdef NETBSD
#define SIGNAL_SHORT_READ
#else

8
sys/sys/mtio.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)mtio.h 8.1 (Berkeley) 6/2/93
* $Id$
* $Id: mtio.h,v 1.3 1994/08/02 07:53:17 davidg Exp $
*/
#ifndef _SYS_MTIO_H_
@ -72,6 +72,12 @@ struct mtop {
/* and range from 0 to 0x17. Sets the value for the openned mode only */
#define MTSETDNSTY 11
/*
** Tape erase function - AKL: Andreas Klemm <andreas@knobel.gun.de>
*/
#define MTERASE 12
#endif
/* structure for MTIOCGET - mag tape get status command */