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freebsd-skq/sys/cam/scsi/scsi_sa.c
Poul-Henning Kamp c48d17750f Introduce two functions: physread() and physwrite() and use these directly 
in *devsw[] rather than the 46 local copies of the same functions.

(grog will do the same for vinum when he has time)
1999-05-07 07:03:47 +00:00

3144 lines
80 KiB
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/*
* Implementation of SCSI Sequential Access Peripheral driver for CAM.
*
* Copyright (c) 1997 Justin T. Gibbs
* All rights reserved.
*
* 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,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id: scsi_sa.c,v 1.21 1999/04/18 01:05:03 mjacob Exp $
*/
#include <sys/param.h>
#include <sys/queue.h>
#ifdef KERNEL
#include <sys/systm.h>
#include <sys/kernel.h>
#endif
#include <sys/types.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/mtio.h>
#include <sys/conf.h>
#include <sys/buf.h>
#include <sys/devicestat.h>
#include <machine/limits.h>
#ifndef KERNEL
#include <stdio.h>
#include <string.h>
#endif
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_extend.h>
#include <cam/cam_periph.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_debug.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <cam/scsi/scsi_sa.h>
#ifdef KERNEL
#include <opt_sa.h>
#ifndef SA_SPACE_TIMEOUT
#define SA_SPACE_TIMEOUT 1 * 60
#endif
#ifndef SA_REWIND_TIMEOUT
#define SA_REWIND_TIMEOUT 2 * 60
#endif
#ifndef SA_ERASE_TIMEOUT
#define SA_ERASE_TIMEOUT 4 * 60
#endif
/*
* Default to old FreeBSD behaviour of 2 filemarks
* at EOD for all (except QIC) devices.
*/
#ifndef SA_2FM_AT_EOD
#define SA_2FM_AT_EOD 1
#endif
#ifndef UNUSED_PARAMETER
#define UNUSED_PARAMETER(x) x = x
#endif
typedef enum {
SA_STATE_NORMAL
} sa_state;
typedef enum {
SA_CCB_BUFFER_IO,
SA_CCB_WAITING
} sa_ccb_types;
#define ccb_type ppriv_field0
#define ccb_bp ppriv_ptr1
typedef enum {
SA_FLAG_OPEN = 0x0001,
SA_FLAG_FIXED = 0x0002,
SA_FLAG_TAPE_LOCKED = 0x0004,
SA_FLAG_TAPE_MOUNTED = 0x0008,
SA_FLAG_TAPE_WP = 0x0010,
SA_FLAG_TAPE_WRITTEN = 0x0020,
SA_FLAG_EOM_PENDING = 0x0040,
SA_FLAG_EIO_PENDING = 0x0080,
SA_FLAG_EOF_PENDING = 0x0100,
SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
SA_FLAG_EOF_PENDING),
SA_FLAG_INVALID = 0x0200,
SA_FLAG_COMP_ENABLED = 0x0400,
SA_FLAG_COMP_UNSUPP = 0x0800
} sa_flags;
typedef enum {
SA_MODE_REWIND = 0x00,
SA_MODE_NOREWIND = 0x01,
SA_MODE_OFFLINE = 0x02
} sa_mode;
typedef enum {
SA_PARAM_NONE = 0x00,
SA_PARAM_BLOCKSIZE = 0x01,
SA_PARAM_DENSITY = 0x02,
SA_PARAM_COMPRESSION = 0x04,
SA_PARAM_BUFF_MODE = 0x08,
SA_PARAM_NUMBLOCKS = 0x10,
SA_PARAM_WP = 0x20,
SA_PARAM_SPEED = 0x40,
SA_PARAM_ALL = 0x7f
} sa_params;
typedef enum {
SA_QUIRK_NONE = 0x00,
SA_QUIRK_NOCOMP = 0x01, /* can't deal with compression at all */
SA_QUIRK_FIXED = 0x02, /* force fixed mode */
SA_QUIRK_VARIABLE = 0x04, /* force variable mode */
SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
SA_QUIRK_1FM = 0x10 /* No more than 1 File Mark at EOD */
} sa_quirks;
struct sa_softc {
sa_state state;
sa_flags flags;
sa_quirks quirks;
struct buf_queue_head buf_queue;
struct devstat device_stats;
int blk_gran;
int blk_mask;
int blk_shift;
u_int32_t max_blk;
u_int32_t min_blk;
u_int32_t comp_algorithm;
u_int32_t saved_comp_algorithm;
u_int32_t media_blksize;
u_int32_t last_media_blksize;
u_int32_t media_numblks;
u_int8_t media_density;
u_int8_t speed;
u_int8_t scsi_rev;
u_int8_t dsreg; /* mtio mt_dsreg, redux */
int buffer_mode;
int filemarks;
union ccb saved_ccb;
/*
* Relative to BOT Location.
*/
daddr_t fileno;
daddr_t blkno;
/*
* Latched Error Info
*/
struct {
struct scsi_sense_data _last_io_sense;
u_int32_t _last_io_resid;
u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
struct scsi_sense_data _last_ctl_sense;
u_int32_t _last_ctl_resid;
u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
#define last_io_sense errinfo._last_io_sense
#define last_io_resid errinfo._last_io_resid
#define last_io_cdb errinfo._last_io_cdb
#define last_ctl_sense errinfo._last_ctl_sense
#define last_ctl_resid errinfo._last_ctl_resid
#define last_ctl_cdb errinfo._last_ctl_cdb
} errinfo;
/*
* Misc other flags/state
*/
u_int32_t
: 31,
ctrl_mode : 1; /* control device open */
};
struct sa_quirk_entry {
struct scsi_inquiry_pattern inq_pat; /* matching pattern */
sa_quirks quirks; /* specific quirk type */
u_int32_t prefblk; /* preferred blocksize when in fixed mode */
};
static struct sa_quirk_entry sa_quirk_table[] =
{
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
"Python 25601*", "*"}, SA_QUIRK_NOCOMP, 0
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
"VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
"VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
"T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
"HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
"*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
"123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
" TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
" TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
"5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
},
{
{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
"51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
}
};
static d_open_t saopen;
static d_close_t saclose;
static d_strategy_t sastrategy;
static d_ioctl_t saioctl;
static periph_init_t sainit;
static periph_ctor_t saregister;
static periph_oninv_t saoninvalidate;
static periph_dtor_t sacleanup;
static periph_start_t sastart;
static void saasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg);
static void sadone(struct cam_periph *periph,
union ccb *start_ccb);
static int saerror(union ccb *ccb, u_int32_t cam_flags,
u_int32_t sense_flags);
static int sacheckeod(struct cam_periph *periph);
static int sagetparams(struct cam_periph *periph,
sa_params params_to_get,
u_int32_t *blocksize, u_int8_t *density,
u_int32_t *numblocks, int *buff_mode,
u_int8_t *write_protect, u_int8_t *speed,
int *comp_supported, int *comp_enabled,
u_int32_t *comp_algorithm,
struct scsi_data_compression_page *comp_page);
static int sasetparams(struct cam_periph *periph,
sa_params params_to_set,
u_int32_t blocksize, u_int8_t density,
u_int32_t comp_algorithm,
u_int32_t sense_flags);
static void saprevent(struct cam_periph *periph, int action);
static int sarewind(struct cam_periph *periph);
static int saspace(struct cam_periph *periph, int count,
scsi_space_code code);
static int samount(struct cam_periph *, int, dev_t);
static int saretension(struct cam_periph *periph);
static int sareservereleaseunit(struct cam_periph *periph,
int reserve);
static int saloadunload(struct cam_periph *periph, int load);
static int saerase(struct cam_periph *periph, int longerase);
static int sawritefilemarks(struct cam_periph *periph,
int nmarks, int setmarks);
static int sardpos(struct cam_periph *periph, int, u_int32_t *);
static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
static struct periph_driver sadriver =
{
sainit, "sa",
TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, sadriver);
/* units are bits 4-7, 16-21 (1024 units) */
#define SAUNIT(DEV) \
(((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
#define SAMODE(z) ((minor(z) & 0x3))
#define SADENSITY(z) (((minor(z) >> 2) & 0x3))
#define SA_IS_CTRL(z) (minor(z) & (1 << 29))
/* For 2.2-stable support */
#ifndef D_TAPE
#define D_TAPE 0
#endif
#define SA_CDEV_MAJOR 14
#define SA_BDEV_MAJOR 5
static struct cdevsw sa_cdevsw =
{
/*d_open*/ saopen,
/*d_close*/ saclose,
/*d_read*/ physread,
/*d_write*/ physwrite,
/*d_ioctl*/ saioctl,
/*d_stop*/ nostop,
/*d_reset*/ noreset,
/*d_devtotty*/ nodevtotty,
/*d_poll*/ seltrue,
/*d_mmap*/ nommap,
/*d_strategy*/ sastrategy,
/*d_name*/ "sa",
/*d_spare*/ NULL,
/*d_maj*/ -1,
/*d_dump*/ nodump,
/*d_psize*/ nopsize,
/*d_flags*/ D_TAPE,
/*d_maxio*/ 0,
/*b_maj*/ -1
};
static struct extend_array *saperiphs;
static int
saopen(dev_t dev, int flags, int fmt, struct proc *p)
{
struct cam_periph *periph;
struct sa_softc *softc;
int unit;
int mode;
int density;
int error;
int s;
unit = SAUNIT(dev);
mode = SAMODE(dev);
density = SADENSITY(dev);
periph = cam_extend_get(saperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct sa_softc *)periph->softc;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("saaopen: dev=0x%x (unit %d , mode %d, density %d)\n", dev,
unit, mode, density));
s = splsoftcam();
if (SA_IS_CTRL(dev)) {
softc->ctrl_mode = 1;
(void) splx(s);
return (0);
}
if (softc->flags & SA_FLAG_INVALID) {
splx(s);
return(ENXIO);
}
if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
splx(s);
return (error); /* error code from tsleep */
}
splx(s);
if ((softc->flags & SA_FLAG_OPEN) == 0) {
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
return(ENXIO);
if ((error = sareservereleaseunit(periph, TRUE)) != 0) {
cam_periph_unlock(periph);
cam_periph_release(periph);
return(error);
}
}
if (error == 0) {
if ((softc->flags & SA_FLAG_OPEN) != 0) {
error = EBUSY;
}
if (error == 0)
error = samount(periph, flags, dev);
/* Perform other checking... */
}
if (error == 0) {
saprevent(periph, PR_PREVENT);
softc->flags |= SA_FLAG_OPEN;
}
cam_periph_unlock(periph);
return (error);
}
static int
saclose(dev_t dev, int flag, int fmt, struct proc *p)
{
struct cam_periph *periph;
struct sa_softc *softc;
int unit;
int mode;
int error;
int closedbits = SA_FLAG_OPEN;
unit = SAUNIT(dev);
mode = SAMODE(dev);
periph = cam_extend_get(saperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct sa_softc *)periph->softc;
if (SA_IS_CTRL(dev)) {
softc->ctrl_mode = 0;
return (0);
}
if ((error = cam_periph_lock(periph, PRIBIO)) != 0) {
return (error); /* error code from tsleep */
}
/*
* See whether or not we need to write filemarks...
*/
error = sacheckeod(periph);
if (error) {
xpt_print_path(periph->path);
printf("failure at writing filemarks - opting for safety\n");
mode = SA_MODE_OFFLINE;
}
/*
* Whatever we end up doing, allow users to eject tapes from here on.
*/
saprevent(periph, PR_ALLOW);
/*
* Decide how to end...
*/
switch (mode) {
default:
xpt_print_path(periph->path);
printf("unknown close mode %x- opting for safety\n", mode);
/* FALLTHROUGH */
case SA_MODE_OFFLINE:
sarewind(periph);
saloadunload(periph, FALSE);
closedbits |= SA_FLAG_TAPE_MOUNTED; /* not mounted now */
break;
case SA_MODE_REWIND:
sarewind(periph);
closedbits |= SA_FLAG_TAPE_MOUNTED; /* not mounted now */
break;
case SA_MODE_NOREWIND:
/*
* If we're not rewinding/unloading the tape, find out
* whether we need to back up over one of two filemarks
* we wrote (if we wrote two filemarks) so that appends
* from this point on will be sane.
*/
if ((softc->quirks & SA_QUIRK_2FM) &&
(softc->flags & SA_FLAG_TAPE_WRITTEN)) {
error = saspace(periph, -1, SS_FILEMARKS);
if (error) {
xpt_print_path(periph->path);
printf("unable to backspace over one of double"
" filemarks at EOD- opting for safety\n");
sarewind(periph);
saloadunload(periph, FALSE);
closedbits |= SA_FLAG_TAPE_MOUNTED;
}
}
break;
}
/*
* We wish to note here that there are no more filemarks to be written.
*/
softc->filemarks = 0;
softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
/*
* And we are no longer open for business.
*/
softc->flags &= ~closedbits;
/* release the device */
sareservereleaseunit(periph, FALSE);
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
/*
* Actually translate the requested transfer into one the physical driver
* can understand. The transfer is described by a buf and will include
* only one physical transfer.
*/
static void
sastrategy(struct buf *bp)
{
struct cam_periph *periph;
struct sa_softc *softc;
u_int unit;
int s;
if (SA_IS_CTRL(bp->b_dev)) {
bp->b_error = EINVAL;
goto bad;
}
unit = SAUNIT(bp->b_dev);
periph = cam_extend_get(saperiphs, unit);
if (periph == NULL) {
bp->b_error = ENXIO;
goto bad;
}
softc = (struct sa_softc *)periph->softc;
s = splsoftcam();
if (softc->flags & SA_FLAG_INVALID) {
splx(s);
bp->b_error = ENXIO;
goto bad;
}
splx(s);
/*
* If it's a null transfer, return immediatly
*/
if (bp->b_bcount == 0)
goto done;
/* valid request? */
if (softc->flags & SA_FLAG_FIXED) {
/*
* Fixed block device. The byte count must
* be a multiple of our block size.
*/
if (((softc->blk_mask != ~0) &&
((bp->b_bcount & softc->blk_mask) != 0)) ||
((softc->blk_mask == ~0) &&
((bp->b_bcount % softc->min_blk) != 0))) {
xpt_print_path(periph->path);
printf("Invalid request. Fixed block device "
"requests must be a multiple "
"of %d bytes\n", softc->min_blk);
bp->b_error = EINVAL;
goto bad;
}
} else if ((bp->b_bcount > softc->max_blk) ||
(bp->b_bcount < softc->min_blk) ||
(bp->b_bcount & softc->blk_mask) != 0) {
xpt_print_path(periph->path);
printf("Invalid request. Variable block device "
"requests must be ");
if (softc->blk_mask != 0) {
printf("a multiple of %d ", (0x1 << softc->blk_gran));
}
printf("between %d and %d bytes\n", softc->min_blk,
softc->max_blk);
bp->b_error = EINVAL;
goto bad;
}
/*
* Mask interrupts so that the device cannot be invalidated until
* after we are in the queue. Otherwise, we might not properly
* clean up one of the buffers.
*/
s = splbio();
/*
* Place it at the end of the queue.
*/
bufq_insert_tail(&softc->buf_queue, bp);
splx(s);
/*
* Schedule ourselves for performing the work.
*/
xpt_schedule(periph, 1);
return;
bad:
bp->b_flags |= B_ERROR;
done:
/*
* Correctly set the buf to indicate a completed xfer
*/
bp->b_resid = bp->b_bcount;
biodone(bp);
}
static int
saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p)
{
struct cam_periph *periph;
struct sa_softc *softc;
int didlockperiph = 0;
int s;
int unit;
int mode;
int density;
int error;
unit = SAUNIT(dev);
mode = SAMODE(dev);
density = SADENSITY(dev);
periph = cam_extend_get(saperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct sa_softc *)periph->softc;
/*
* Check for control mode accesses. We allow MTIOCGET and
* MTIOCERRSTAT (but need to be the only one open in order
* to clear latched status), and MTSETBSIZE, MTSETDNSTY
* and MTCOMP (but need to be the only one accessing this
* device to run those).
*/
if (SA_IS_CTRL(dev)) {
switch (cmd) {
case MTIOCGET:
break;
case MTIOCERRSTAT:
/*
* If the periph isn't already locked, lock it
* so our MTIOCERRSTAT can reset latched error stats.
*
* If the periph is already locked, skip it because
* we're just getting status and it'll be up to the
* other thread that has this device open to do
* an MTIOCERRSTAT that would clear latched status.
*/
s = splsoftcam();
if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
error = cam_periph_lock(periph, PRIBIO|PCATCH);
if (error != 0) {
splx(s);
return (error);
}
didlockperiph = 1;
}
break;
case MTSETBSIZ:
case MTSETDNSTY:
case MTCOMP:
/*
* We need to acquire the peripheral here rather
* than at open time because we are sharing writable
* access to data structures.
*/
s = splsoftcam();
error = cam_periph_lock(periph, PRIBIO|PCATCH);
if (error != 0) {
splx(s);
return (error);
}
didlockperiph = 1;
break;
default:
return (EINVAL);
}
}
/*
* Find the device that the user is talking about
*/
switch (cmd) {
case MTIOCGET:
{
struct mtget *g = (struct mtget *)arg;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("saioctl: MTIOGET\n"));
bzero(g, sizeof(struct mtget));
g->mt_type = MT_ISAR;
g->mt_density = softc->media_density;
g->mt_blksiz = softc->media_blksize;
if (softc->flags & SA_FLAG_COMP_UNSUPP) {
g->mt_comp = MT_COMP_UNSUPP;
g->mt_comp0 = MT_COMP_UNSUPP;
g->mt_comp1 = MT_COMP_UNSUPP;
g->mt_comp2 = MT_COMP_UNSUPP;
g->mt_comp3 = MT_COMP_UNSUPP;
} else if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
g->mt_comp = MT_COMP_DISABLED;
g->mt_comp0 = MT_COMP_DISABLED;
g->mt_comp1 = MT_COMP_DISABLED;
g->mt_comp2 = MT_COMP_DISABLED;
g->mt_comp3 = MT_COMP_DISABLED;
} else {
g->mt_comp = softc->comp_algorithm;
g->mt_comp0 = softc->comp_algorithm;
g->mt_comp1 = softc->comp_algorithm;
g->mt_comp2 = softc->comp_algorithm;
g->mt_comp3 = softc->comp_algorithm;
}
g->mt_density0 = softc->media_density;
g->mt_density1 = softc->media_density;
g->mt_density2 = softc->media_density;
g->mt_density3 = softc->media_density;
g->mt_blksiz0 = softc->media_blksize;
g->mt_blksiz1 = softc->media_blksize;
g->mt_blksiz2 = softc->media_blksize;
g->mt_blksiz3 = softc->media_blksize;
g->mt_fileno = softc->fileno;
g->mt_blkno = softc->blkno;
g->mt_dsreg = (short) softc->dsreg;
error = 0;
break;
}
case MTIOCERRSTAT:
{
struct scsi_tape_errors *sep =
&((union mterrstat *)arg)->scsi_errstat;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("saioctl: MTIOCERRSTAT\n"));
bzero(sep, sizeof(*sep));
sep->io_resid = softc->last_io_resid;
bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
sizeof (sep->io_sense));
bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
sizeof (sep->io_cdb));
sep->ctl_resid = softc->last_ctl_resid;
bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
sizeof (sep->ctl_sense));
bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
sizeof (sep->ctl_cdb));
if (SA_IS_CTRL(dev) == 0 || didlockperiph)
bzero((caddr_t) &softc->errinfo,
sizeof (softc->errinfo));
error = 0;
break;
}
case MTIOCTOP:
{
struct mtop *mt;
int count;
mt = (struct mtop *)arg;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("saioctl: op=0x%x count=0x%x\n",
mt->mt_op, mt->mt_count));
count = mt->mt_count;
switch (mt->mt_op) {
case MTWEOF: /* write an end-of-file marker */
error = sawritefilemarks(periph, count, FALSE);
break;
case MTWSS: /* write a setmark */
error = sawritefilemarks(periph, count, TRUE);
break;
case MTBSR: /* backward space record */
case MTFSR: /* forward space record */
case MTBSF: /* backward space file */
case MTFSF: /* forward space file */
case MTBSS: /* backward space setmark */
case MTFSS: /* forward space setmark */
case MTEOD: /* space to end of recorded medium */
{
int nmarks;
scsi_space_code spaceop = SS_FILEMARKS;
nmarks = softc->filemarks;
error = sacheckeod(periph);
if (error) {
xpt_print_path(periph->path);
printf("EOD check prior to spacing failed\n");
softc->flags |= SA_FLAG_EIO_PENDING;
break;
}
nmarks -= softc->filemarks;
switch(mt->mt_op) {
case MTBSR:
count = -count;
/* FALLTHROUGH */
case MTFSR:
spaceop = SS_BLOCKS;
break;
case MTBSF:
count = -count;
/* FALLTHROUGH */
case MTFSF:
break;
case MTBSS:
count = -count;
/* FALLTHROUGH */
case MTFSS:
spaceop = SS_SETMARKS;
break;
case MTEOD:
spaceop = SS_EOD;
count = 0;
nmarks = 0;
break;
default:
error = EINVAL;
break;
}
if (error)
break;
nmarks = softc->filemarks;
/*
* XXX: Why are we checking again?
*/
error = sacheckeod(periph);
if (error)
break;
nmarks -= softc->filemarks;
error = saspace(periph, count - nmarks, spaceop);
/*
* At this point, clear that we've written the tape
* and that we've written any filemarks. We really
* don't know what the applications wishes to do next-
* the sacheckeod's will make sure we terminated the
* tape correctly if we'd been writing, but the next
* action the user application takes will set again
* whether we need to write filemarks.
*/
softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
softc->filemarks = 0;
break;
}
case MTREW: /* rewind */
(void) sacheckeod(periph);
error = sarewind(periph);
/* see above */
softc->flags &=
~SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_MOUNTED;
softc->filemarks = 0;
break;
case MTERASE: /* erase */
error = saerase(periph, count);
break;
case MTRETENS: /* re-tension tape */
error = saretension(periph);
break;
case MTOFFL: /* rewind and put the drive offline */
(void) sacheckeod(periph);
/* see above */
softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
softc->filemarks = 0;
/*
* Be sure to allow media removal before
* attempting the eject.
*/
saprevent(periph, PR_ALLOW);
error = sarewind(periph);
if (error == 0)
error = saloadunload(periph, FALSE);
else
break;
softc->flags &= ~SA_FLAG_TAPE_LOCKED;
softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
break;
case MTNOP: /* no operation, sets status only */
case MTCACHE: /* enable controller cache */
case MTNOCACHE: /* disable controller cache */
error = 0;
break;
case MTSETBSIZ: /* Set block size for device */
error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
0, 0, 0);
if (error == 0) {
softc->last_media_blksize =
softc->media_blksize;
softc->media_blksize = count;
if (count) {
softc->flags |= SA_FLAG_FIXED;
if (powerof2(count)) {
softc->blk_shift =
ffs(count) - 1;
softc->blk_mask = count - 1;
} else {
softc->blk_mask = ~0;
softc->blk_shift = 0;
}
/*
* Make the user's desire 'persistent'.
*/
softc->quirks &= ~SA_QUIRK_VARIABLE;
softc->quirks |= SA_QUIRK_FIXED;
} else {
softc->flags &= ~SA_FLAG_FIXED;
if (softc->max_blk == 0) {
softc->max_blk = ~0;
}
softc->blk_shift = 0;
if (softc->blk_gran != 0) {
softc->blk_mask =
softc->blk_gran - 1;
} else {
softc->blk_mask = 0;
}
/*
* Make the user's desire 'persistent'.
*/
softc->quirks |= SA_QUIRK_VARIABLE;
softc->quirks &= ~SA_QUIRK_FIXED;
}
}
break;
case MTSETDNSTY: /* Set density for device and mode */
if (count > UCHAR_MAX) {
error = EINVAL;
break;
} else {
error = sasetparams(periph, SA_PARAM_DENSITY,
0, count, 0, 0);
}
break;
case MTCOMP: /* enable compression */
/*
* Some devices don't support compression, and
* don't like it if you ask them for the
* compression page.
*/
if ((softc->quirks & SA_QUIRK_NOCOMP) ||
(softc->flags & SA_FLAG_COMP_UNSUPP)) {
error = ENODEV;
break;
}
error = sasetparams(periph, SA_PARAM_COMPRESSION,
0, 0, count, 0);
break;
default:
error = EINVAL;
}
break;
}
case MTIOCIEOT:
case MTIOCEEOT:
error = 0;
break;
case MTIOCRDSPOS:
error = sardpos(periph, 0, (u_int32_t *) arg);
break;
case MTIOCRDHPOS:
error = sardpos(periph, 1, (u_int32_t *) arg);
break;
case MTIOCSLOCATE:
error = sasetpos(periph, 0, (u_int32_t *) arg);
break;
case MTIOCHLOCATE:
error = sasetpos(periph, 1, (u_int32_t *) arg);
break;
default:
error = cam_periph_ioctl(periph, cmd, arg, saerror);
break;
}
if (didlockperiph) {
cam_periph_unlock(periph);
}
return (error);
}
static void
sainit(void)
{
cam_status status;
struct cam_path *path;
/*
* Create our extend array for storing the devices we attach to.
*/
saperiphs = cam_extend_new();
if (saperiphs == NULL) {
printf("sa: Failed to alloc extend array!\n");
return;
}
/*
* Install a global async callback.
*/
status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
if (status == CAM_REQ_CMP) {
/* Register the async callbacks of interrest */
struct ccb_setasync csa; /*
* This is an immediate CCB,
* so using the stack is OK
*/
xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_FOUND_DEVICE;
csa.callback = saasync;
csa.callback_arg = NULL;
xpt_action((union ccb *)&csa);
status = csa.ccb_h.status;
xpt_free_path(path);
}
if (status != CAM_REQ_CMP) {
printf("sa: Failed to attach master async callback "
"due to status 0x%x!\n", status);
} else {
/* If we were successfull, register our devsw */
cdevsw_add_generic(SA_BDEV_MAJOR, SA_CDEV_MAJOR, &sa_cdevsw);
}
}
static void
saoninvalidate(struct cam_periph *periph)
{
struct sa_softc *softc;
struct buf *q_bp;
struct ccb_setasync csa;
int s;
softc = (struct sa_softc *)periph->softc;
/*
* De-register any async callbacks.
*/
xpt_setup_ccb(&csa.ccb_h, periph->path,
/* priority */ 5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = 0;
csa.callback = saasync;
csa.callback_arg = periph;
xpt_action((union ccb *)&csa);
softc->flags |= SA_FLAG_INVALID;
/*
* Although the oninvalidate() routines are always called at
* splsoftcam, we need to be at splbio() here to keep the buffer
* queue from being modified while we traverse it.
*/
s = splbio();
/*
* Return all queued I/O with ENXIO.
* XXX Handle any transactions queued to the card
* with XPT_ABORT_CCB.
*/
while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
bufq_remove(&softc->buf_queue, q_bp);
q_bp->b_resid = q_bp->b_bcount;
q_bp->b_error = ENXIO;
q_bp->b_flags |= B_ERROR;
biodone(q_bp);
}
splx(s);
xpt_print_path(periph->path);
printf("lost device\n");
}
static void
sacleanup(struct cam_periph *periph)
{
struct sa_softc *softc;
softc = (struct sa_softc *)periph->softc;
devstat_remove_entry(&softc->device_stats);
cam_extend_release(saperiphs, periph->unit_number);
xpt_print_path(periph->path);
printf("removing device entry\n");
free(softc, M_DEVBUF);
}
static void
saasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg)
{
struct cam_periph *periph;
periph = (struct cam_periph *)callback_arg;
switch (code) {
case AC_FOUND_DEVICE:
{
struct ccb_getdev *cgd;
cam_status status;
cgd = (struct ccb_getdev *)arg;
if (cgd->pd_type != T_SEQUENTIAL)
break;
/*
* Allocate a peripheral instance for
* this device and start the probe
* process.
*/
status = cam_periph_alloc(saregister, saoninvalidate,
sacleanup, sastart,
"sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
saasync, AC_FOUND_DEVICE, cgd);
if (status != CAM_REQ_CMP
&& status != CAM_REQ_INPROG)
printf("saasync: Unable to probe new device "
"due to status 0x%x\n", status);
break;
}
case AC_LOST_DEVICE:
cam_periph_invalidate(periph);
break;
case AC_TRANSFER_NEG:
case AC_SENT_BDR:
case AC_SCSI_AEN:
case AC_UNSOL_RESEL:
case AC_BUS_RESET:
default:
break;
}
}
static cam_status
saregister(struct cam_periph *periph, void *arg)
{
struct sa_softc *softc;
struct ccb_setasync csa;
struct ccb_getdev *cgd;
caddr_t match;
cgd = (struct ccb_getdev *)arg;
if (periph == NULL) {
printf("saregister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
if (cgd == NULL) {
printf("saregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (struct sa_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
if (softc == NULL) {
printf("saregister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
bzero(softc, sizeof(*softc));
softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
softc->state = SA_STATE_NORMAL;
softc->fileno = (daddr_t) -1;
softc->blkno = (daddr_t) -1;
bufq_init(&softc->buf_queue);
periph->softc = softc;
cam_extend_set(saperiphs, periph->unit_number, periph);
/*
* See if this device has any quirks.
*/
match = cam_quirkmatch((caddr_t)&cgd->inq_data,
(caddr_t)sa_quirk_table,
sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
sizeof(*sa_quirk_table), scsi_inquiry_match);
if (match != NULL) {
softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
softc->last_media_blksize =
((struct sa_quirk_entry *)match)->prefblk;
#ifdef CAMDEBUG
xpt_print_path(periph->path);
printf("found quirk entry %d\n", (int)
(((struct sa_quirk_entry *) match) - sa_quirk_table));
#endif
} else
softc->quirks = SA_QUIRK_NONE;
/*
* The SA driver supports a blocksize, but we don't know the
* blocksize until we sense the media. So, set a flag to
* indicate that the blocksize is unavailable right now.
* We'll clear the flag as soon as we've done a read capacity.
*/
devstat_add_entry(&softc->device_stats, "sa",
periph->unit_number, 0,
DEVSTAT_BS_UNAVAILABLE,
cgd->pd_type | DEVSTAT_TYPE_IF_SCSI,
DEVSTAT_PRIORITY_SA);
/*
* Add an async callback so that we get
* notified if this device goes away.
*/
xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_LOST_DEVICE;
csa.callback = saasync;
csa.callback_arg = periph;
xpt_action((union ccb *)&csa);
xpt_announce_periph(periph, NULL);
return(CAM_REQ_CMP);
}
static void
sastart(struct cam_periph *periph, union ccb *start_ccb)
{
struct sa_softc *softc;
softc = (struct sa_softc *)periph->softc;
CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart"));
switch (softc->state) {
case SA_STATE_NORMAL:
{
/* Pull a buffer from the queue and get going on it */
struct buf *bp;
int s;
/*
* See if there is a buf with work for us to do..
*/
s = splbio();
bp = bufq_first(&softc->buf_queue);
if (periph->immediate_priority <= periph->pinfo.priority) {
CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
("queuing for immediate ccb\n"));
start_ccb->ccb_h.ccb_type = SA_CCB_WAITING;
SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
periph_links.sle);
periph->immediate_priority = CAM_PRIORITY_NONE;
splx(s);
wakeup(&periph->ccb_list);
} else if (bp == NULL) {
splx(s);
xpt_release_ccb(start_ccb);
} else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
struct buf *done_bp;
bufq_remove(&softc->buf_queue, bp);
bp->b_resid = bp->b_bcount;
bp->b_flags |= B_ERROR;
if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
if ((bp->b_flags & B_READ) == 0)
bp->b_error = ENOSPC;
else
bp->b_error = EIO;
}
if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
bp->b_error = EIO;
}
if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
bp->b_error = EIO;
}
done_bp = bp;
bp = bufq_first(&softc->buf_queue);
/*
* Only if we have no other buffers queued up
* do we clear the pending error flag.
*/
if (bp == NULL)
softc->flags &= ~SA_FLAG_ERR_PENDING;
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
("sastart- coping with pending error %x, %smore "
"buffers queued up\n",
(softc->flags & SA_FLAG_ERR_PENDING),
(bp == NULL)? "no " : " "));
splx(s);
xpt_release_ccb(start_ccb);
biodone(done_bp);
} else {
u_int32_t length;
bufq_remove(&softc->buf_queue, bp);
if ((softc->flags & SA_FLAG_FIXED) != 0) {
if (softc->blk_shift != 0) {
length =
bp->b_bcount >> softc->blk_shift;
} else if (softc->media_blksize != 0) {
length =
bp->b_bcount / softc->media_blksize;
} else {
bp->b_error = EIO;
xpt_print_path(periph->path);
printf("zero blocksize for "
"FIXED length writes?\n");
splx(s);
biodone(bp);
break;
}
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
("Fixed Record Count is %d\n", length));
} else {
length = bp->b_bcount;
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
("Variable Record Count is %d\n", length));
}
devstat_start_transaction(&softc->device_stats);
/*
* Some people have theorized that we should
* suppress illegal length indication if we are
* running in variable block mode so that we don't
* have to request sense every time our requested
* block size is larger than the written block.
* The residual information from the ccb allows
* us to identify this situation anyway. The only
* problem with this is that we will not get
* information about blocks that are larger than
* our read buffer unless we set the block size
* in the mode page to something other than 0.
*
* I believe that this is a non-issue. If user apps
* don't adjust their read size to match our record
* size, that's just life. Anyway, the typical usage
* would be to issue, e.g., 64KB reads and occasionally
* have to do deal with 512 byte or 1KB intermediate
* records.
*/
softc->dsreg = (bp->b_flags & B_READ)?
MTIO_DSREG_RD : MTIO_DSREG_WR;
scsi_sa_read_write(&start_ccb->csio,
/* No Retries */0,
sadone,
MSG_SIMPLE_Q_TAG,
bp->b_flags & B_READ,
/*SILI*/FALSE,
softc->flags & SA_FLAG_FIXED,
length,
bp->b_data,
bp->b_bcount,
SSD_FULL_SIZE,
120 * 60 * 1000); /* 2min */
start_ccb->ccb_h.ccb_type = SA_CCB_BUFFER_IO;
start_ccb->ccb_h.ccb_bp = bp;
bp = bufq_first(&softc->buf_queue);
splx(s);
xpt_action(start_ccb);
}
if (bp != NULL) {
/* Have more work to do, so ensure we stay scheduled */
xpt_schedule(periph, /* XXX priority */1);
}
break;
}
}
}
static void
sadone(struct cam_periph *periph, union ccb *done_ccb)
{
struct sa_softc *softc;
struct ccb_scsiio *csio;
softc = (struct sa_softc *)periph->softc;
csio = &done_ccb->csio;
switch (csio->ccb_h.ccb_type) {
case SA_CCB_BUFFER_IO:
{
struct buf *bp;
int error;
softc->dsreg = MTIO_DSREG_REST;
bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
error = 0;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
/*
* A retry was scheduled, so just return.
*/
return;
}
}
if (error == EIO) {
int s;
struct buf *q_bp;
/*
* Catastrophic error. Mark the tape as not mounted.
* Return all queued I/O with EIO, and unfreeze
* our queue so that future transactions that
* attempt to fix this problem can get to the
* device.
*
*/
s = splbio();
softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) {
bufq_remove(&softc->buf_queue, q_bp);
q_bp->b_resid = q_bp->b_bcount;
q_bp->b_error = EIO;
q_bp->b_flags |= B_ERROR;
biodone(q_bp);
}
splx(s);
}
if (error != 0) {
bp->b_resid = bp->b_bcount;
bp->b_error = error;
bp->b_flags |= B_ERROR;
cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
/*
* In the error case, position is updated in saerror.
*/
} else {
bp->b_resid = csio->resid;
bp->b_error = 0;
if (csio->resid != 0) {
bp->b_flags |= B_ERROR;
}
if ((bp->b_flags & B_READ) == 0) {
softc->flags |= SA_FLAG_TAPE_WRITTEN;
softc->filemarks = 0;
}
if (softc->blkno != (daddr_t) -1) {
if ((softc->flags & SA_FLAG_FIXED) != 0) {
u_int32_t l;
if (softc->blk_shift != 0) {
l = bp->b_bcount >>
softc->blk_shift;
} else {
l = bp->b_bcount /
softc->media_blksize;
}
softc->blkno += (daddr_t) l;
} else {
softc->blkno++;
}
}
}
#ifdef CAMDEBUG
if (error || bp->b_resid) {
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
("error %d resid %ld count %ld\n", error,
bp->b_resid, bp->b_bcount));
}
#endif
devstat_end_transaction(&softc->device_stats,
bp->b_bcount - bp->b_resid,
done_ccb->csio.tag_action & 0xf,
(bp->b_flags & B_READ) ? DEVSTAT_READ
: DEVSTAT_WRITE);
biodone(bp);
break;
}
case SA_CCB_WAITING:
{
/* Caller will release the CCB */
wakeup(&done_ccb->ccb_h.cbfcnp);
return;
}
}
xpt_release_ccb(done_ccb);
}
/*
* Mount the tape (make sure it's ready for I/O).
*/
static int
samount(struct cam_periph *periph, int oflags, dev_t dev)
{
struct sa_softc *softc;
union ccb *ccb;
struct ccb_scsiio *csio;
int error;
/*
* oflags can be checked for 'kind' of open (read-only check) - later
* dev can be checked for a control-mode or compression open - later
*/
UNUSED_PARAMETER(oflags);
UNUSED_PARAMETER(dev);
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, 1);
csio = &ccb->csio;
error = 0;
/*
* Determine if something has happend since the last
* open/mount that would invalidate a mount. This
* will also eat any pending UAs.
*/
scsi_test_unit_ready(csio, 1, sadone,
MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5000);
cam_periph_runccb(ccb, NULL, 0, 0, &softc->device_stats);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
}
if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
struct scsi_read_block_limits_data *rblim = NULL;
int comp_enabled, comp_supported;
u_int8_t write_protect, guessing = 0;
/*
* Clear out old state.
*/
softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
SA_FLAG_COMP_UNSUPP);
softc->filemarks = 0;
/*
* *Very* first off, make sure we're loaded to BOT.
*/
scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
FALSE, FALSE, 1, SSD_FULL_SIZE, 60000);
error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR,
&softc->device_stats);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
/*
* In case this doesn't work, do a REWIND instead
*/
if (error) {
scsi_rewind(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
FALSE, SSD_FULL_SIZE,
(SA_REWIND_TIMEOUT) * 60 * 1000);
error = cam_periph_runccb(ccb, saerror, 0, 0,
&softc->device_stats);
}
if (error) {
xpt_release_ccb(ccb);
goto exit;
}
/*
* Next off, determine block limits.
*/
rblim = (struct scsi_read_block_limits_data *)
malloc(sizeof(*rblim), M_TEMP, M_WAITOK);
/* it is safe to retry this */
scsi_read_block_limits(csio, 5, sadone, MSG_SIMPLE_Q_TAG,
rblim, SSD_FULL_SIZE, 5000);
error = cam_periph_runccb(ccb, saerror, 0,
SF_RETRY_UA, &softc->device_stats);
xpt_release_ccb(ccb);
if (error != 0) {
/*
* If it's less than SCSI-2, READ BLOCK LIMITS is not
* a MANDATORY command. Anyway- it doesn't matter-
* we can proceed anyway.
*/
softc->blk_gran = 0;
softc->max_blk = ~0;
softc->min_blk = 0;
} else {
if (softc->scsi_rev >= SCSI_REV_3) {
softc->blk_gran = RBL_GRAN(rblim);
} else {
softc->blk_gran = 0;
}
/*
* We take max_blk == min_blk to mean a default to
* fixed mode- but note that whatever we get out of
* sagetparams below will actually determine whether
* we are actually *in* fixed mode.
*/
softc->max_blk = scsi_3btoul(rblim->maximum);
softc->min_blk = scsi_2btoul(rblim->minimum);
}
/*
* Next, perform a mode sense to determine
* current density, blocksize, compression etc.
*/
error = sagetparams(periph, SA_PARAM_ALL,
&softc->media_blksize,
&softc->media_density,
&softc->media_numblks,
&softc->buffer_mode, &write_protect,
&softc->speed, &comp_supported,
&comp_enabled, &softc->comp_algorithm,
NULL);
if (error != 0) {
/*
* We could work a little harder here. We could
* adjust our attempts to get information. It
* might be an ancient tape drive. If someone
* nudges us, we'll do that.
*/
goto exit;
}
/*
* If no quirk has determined that this is a device that is
* preferred to be in fixed or variable mode, now is the time
* to find out.
*/
if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
guessing = 1;
/*
* This could be expensive to find out. Luckily we
* only need to do this once. If we start out in
* 'default' mode, try and set ourselves to one
* of the densities that would determine a wad
* of other stuff. Go from highest to lowest.
*/
if (softc->media_density == SCSI_DEFAULT_DENSITY) {
int i;
static u_int8_t ctry[] = {
SCSI_DENSITY_HALFINCH_PE,
SCSI_DENSITY_HALFINCH_6250C,
SCSI_DENSITY_HALFINCH_6250,
SCSI_DENSITY_HALFINCH_1600,
SCSI_DENSITY_HALFINCH_800,
SCSI_DENSITY_QIC_3080,
SCSI_DENSITY_QIC_1320,
SCSI_DENSITY_QIC_525_320,
SCSI_DENSITY_QIC_150,
SCSI_DENSITY_QIC_120,
SCSI_DENSITY_QIC_24,
SCSI_DENSITY_QIC_11_9TRK,
SCSI_DENSITY_QIC_11_4TRK,
0
};
for (i = 0; ctry[i]; i++) {
error = sasetparams(periph,
SA_PARAM_DENSITY, 0, ctry[i],
0, SF_NO_PRINT);
if (error == 0) {
softc->media_density = ctry[i];
break;
}
}
}
switch (softc->media_density) {
case SCSI_DENSITY_QIC_11_4TRK:
case SCSI_DENSITY_QIC_11_9TRK:
case SCSI_DENSITY_QIC_24:
case SCSI_DENSITY_QIC_120:
case SCSI_DENSITY_QIC_150:
case SCSI_DENSITY_QIC_525_320:
case SCSI_DENSITY_QIC_1320:
case SCSI_DENSITY_QIC_3080:
softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
softc->last_media_blksize = 512;
break;
default:
softc->last_media_blksize =
softc->media_blksize;
softc->quirks |= SA_QUIRK_VARIABLE;
break;
}
}
/*
* If no quirk has determined that this is a device that needs
* to have 2 Filemarks at EOD, now is the time to find out.
*/
if ((softc->quirks & SA_QUIRK_2FM) == 0) {
switch (softc->media_density) {
case SCSI_DENSITY_HALFINCH_800:
case SCSI_DENSITY_HALFINCH_1600:
case SCSI_DENSITY_HALFINCH_6250:
case SCSI_DENSITY_HALFINCH_6250C:
case SCSI_DENSITY_HALFINCH_PE:
softc->quirks |= SA_QUIRK_2FM;
break;
default:
break;
}
}
/*
* Now validate that some info we got makes sense.
*/
if ((softc->max_blk < softc->media_blksize) ||
(softc->min_blk > softc->media_blksize &&
softc->media_blksize)) {
xpt_print_path(ccb->ccb_h.path);
printf("BLOCK LIMITS (%d..%d) could not match current "
"block settings (%d)- adjusting\n", softc->min_blk,
softc->max_blk, softc->media_blksize);
softc->max_blk = softc->min_blk =
softc->media_blksize;
}
/*
* Now put ourselves into the right frame of mind based
* upon quirks...
*/
tryagain:
/*
* If we want to be in FIXED mode and our current blocksize
* is not equal to our last blocksize (if nonzero), try and
* set ourselves to this last blocksize (as the 'preferred'
* block size). The initial quirkmatch at registry sets the
* initial 'last' blocksize. If, for whatever reason, this
* 'last' blocksize is zero, set the blocksize to 512,
* or min_blk if that's larger.
*/
if ((softc->quirks & SA_QUIRK_FIXED) &&
(softc->media_blksize != softc->last_media_blksize)) {
softc->media_blksize = softc->last_media_blksize;
if (softc->media_blksize == 0) {
softc->media_blksize = 512;
if (softc->media_blksize < softc->min_blk) {
softc->media_blksize = softc->min_blk;
}
}
error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
softc->media_blksize, 0, 0, SF_NO_PRINT);
if (error) {
xpt_print_path(ccb->ccb_h.path);
printf("unable to set fixed blocksize to %d\n",
softc->media_blksize);
goto exit;
}
}
if ((softc->quirks & SA_QUIRK_VARIABLE) &&
(softc->media_blksize != 0)) {
softc->last_media_blksize = softc->media_blksize;
softc->media_blksize = 0;
error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
0, 0, 0, SF_NO_PRINT);
if (error) {
/*
* If this fails and we were guessing, just
* assume that we got it wrong and go try
* fixed block mode. Don't even check against
* density code at this point.
*/
if (guessing) {
softc->quirks &= ~SA_QUIRK_VARIABLE;
softc->quirks |= SA_QUIRK_FIXED;
if (softc->last_media_blksize == 0)
softc->last_media_blksize = 512;
goto tryagain;
}
xpt_print_path(ccb->ccb_h.path);
printf("unable to set variable blocksize\n");
goto exit;
}
}
/*
* Now that we have the current block size,
* set up some parameters for sastart's usage.
*/
if (softc->media_blksize) {
softc->flags |= SA_FLAG_FIXED;
if (powerof2(softc->media_blksize)) {
softc->blk_shift =
ffs(softc->media_blksize) - 1;
softc->blk_mask = softc->media_blksize - 1;
} else {
softc->blk_mask = ~0;
softc->blk_shift = 0;
}
} else {
/*
* The SCSI-3 spec allows 0 to mean "unspecified".
* The SCSI-1 spec allows 0 to mean 'infinite'.
*
* Either works here.
*/
if (softc->max_blk == 0) {
softc->max_blk = ~0;
}
softc->blk_shift = 0;
if (softc->blk_gran != 0) {
softc->blk_mask = softc->blk_gran - 1;
} else {
softc->blk_mask = 0;
}
}
if (write_protect)
softc->flags |= SA_FLAG_TAPE_WP;
if (comp_supported) {
if (softc->saved_comp_algorithm == 0)
softc->saved_comp_algorithm =
softc->comp_algorithm;
softc->flags |= SA_FLAG_COMP_ENABLED;
} else
softc->flags |= SA_FLAG_COMP_UNSUPP;
if (softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) {
error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
0, 0, SF_NO_PRINT);
if (error == 0)
softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
}
if (error == 0) {
softc->flags |= SA_FLAG_TAPE_MOUNTED;
}
exit:
if (rblim != NULL)
free(rblim, M_TEMP);
if (error != 0) {
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
softc->dsreg = MTIO_DSREG_NIL;
} else {
softc->fileno = softc->blkno = 0;
softc->dsreg = MTIO_DSREG_REST;
}
#if SA_2FM_AT_EOD == 1
if ((softc->quirks & SA_QUIRK_1FM) == 0)
softc->quirks |= SA_QUIRK_2FM;
#endif
} else
xpt_release_ccb(ccb);
return (error);
}
static int
sacheckeod(struct cam_periph *periph)
{
int error;
int markswanted;
struct sa_softc *softc;
softc = (struct sa_softc *)periph->softc;
markswanted = 0;
if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
markswanted++;
if ((softc->quirks & (SA_QUIRK_2FM|SA_QUIRK_1FM)) ==
SA_QUIRK_2FM)
markswanted++;
}
if (softc->filemarks < markswanted) {
markswanted -= softc->filemarks;
error = sawritefilemarks(periph, markswanted, FALSE);
} else {
error = 0;
}
return (error);
}
static int
saerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
{
struct cam_periph *periph;
struct sa_softc *softc;
struct ccb_scsiio *csio;
struct scsi_sense_data *sense;
u_int32_t info, resid;
int error_code, sense_key, asc, ascq;
int error;
periph = xpt_path_periph(ccb->ccb_h.path);
softc = (struct sa_softc *)periph->softc;
csio = &ccb->csio;
sense = &csio->sense_data;
scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
error = 0;
if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) {
if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
info = scsi_4btoul(sense->info);
resid = info;
if ((softc->flags & SA_FLAG_FIXED) != 0)
resid *= softc->media_blksize;
} else {
resid = csio->dxfer_len;
info = resid;
if ((softc->flags & SA_FLAG_FIXED) != 0) {
if (softc->media_blksize)
info /= softc->media_blksize;
}
}
if (csio->ccb_h.ccb_type == SA_CCB_BUFFER_IO) {
bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
sizeof (struct scsi_sense_data));
bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
(int) csio->cdb_len);
softc->last_io_resid = resid;
} else {
bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
sizeof (struct scsi_sense_data));
bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
(int) csio->cdb_len);
softc->last_ctl_resid = resid;
}
}
if (((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR)
&& ((sense->flags & (SSD_EOM|SSD_FILEMARK|SSD_ILI)) != 0)
&& ((sense_key == SSD_KEY_NO_SENSE)
|| (sense_key == SSD_KEY_BLANK_CHECK))) {
int defer_action;
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
("Key 0x%x ASC/ASCQ 0x%x 0x%x flags 0x%x resid %d "
"dxfer_len %d\n", sense_key, asc, ascq,
sense->flags & ~SSD_KEY_RESERVED, resid,
csio->dxfer_len));
if (resid > 0 && resid < csio->dxfer_len &&
(softc->flags & SA_FLAG_FIXED) != 0)
defer_action = TRUE;
else
defer_action = FALSE;
if ((sense->flags & SSD_EOM) != 0
|| (sense_key == 0x8 /* BLANK CHECK*/)) {
csio->resid = resid;
if (defer_action) {
softc->flags |= SA_FLAG_EOM_PENDING;
} else {
if (csio->cdb_io.cdb_bytes[0] == SA_WRITE)
error = ENOSPC;
else
error = EIO;
}
}
if ((sense->flags & SSD_FILEMARK) != 0) {
csio->resid = resid;
if (defer_action)
softc->flags |= SA_FLAG_EOF_PENDING;
if (softc->fileno != (daddr_t) -1) {
softc->fileno++;
softc->blkno = 0;
}
}
if (sense->flags & SSD_ILI) {
if (info < 0) {
/*
* The record was too big.
*/
xpt_print_path(csio->ccb_h.path);
printf("%d-byte tape record bigger "
"than suplied read buffer\n",
csio->dxfer_len - info);
csio->resid = csio->dxfer_len;
error = EIO;
} else {
csio->resid = resid;
if ((softc->flags & SA_FLAG_FIXED) != 0) {
if (defer_action)
softc->flags |=
SA_FLAG_EIO_PENDING;
else
error = EIO;
} else if ((sense->flags & SSD_FILEMARK) == 0) {
if (softc->blkno != (daddr_t) -1) {
softc->blkno++;
}
}
}
}
}
if (error == 0)
error = cam_periph_error(ccb, cam_flags, sense_flags,
&softc->saved_ccb);
return (error);
}
static int
sagetparams(struct cam_periph *periph, sa_params params_to_get,
u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
struct scsi_data_compression_page *comp_page)
{
union ccb *ccb;
void *mode_buffer;
struct scsi_mode_header_6 *mode_hdr;
struct scsi_mode_blk_desc *mode_blk;
struct scsi_data_compression_page *ncomp_page;
int mode_buffer_len;
struct sa_softc *softc;
int error;
cam_status status;
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/ 1);
retry:
mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
if (params_to_get & SA_PARAM_COMPRESSION) {
if (softc->quirks & SA_QUIRK_NOCOMP) {
*comp_supported = FALSE;
params_to_get &= ~SA_PARAM_COMPRESSION;
} else
mode_buffer_len +=
sizeof(struct scsi_data_compression_page);
}
mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK);
bzero(mode_buffer, mode_buffer_len);
mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
if (params_to_get & SA_PARAM_COMPRESSION)
ncomp_page = (struct scsi_data_compression_page *)&mode_blk[1];
else
ncomp_page = NULL;
/* it is safe to retry this */
scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
SA_DATA_COMPRESSION_PAGE : SMS_VENDOR_SPECIFIC_PAGE,
mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000);
error = cam_periph_runccb(ccb, saerror, 0,
SF_NO_PRINT, &softc->device_stats);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
status = ccb->ccb_h.status & CAM_STATUS_MASK;
if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
/*
* Most likely doesn't support the compression
* page. Remember this for the future and attempt
* the request without asking for compression info.
*/
softc->quirks |= SA_QUIRK_NOCOMP;
free(mode_buffer, M_TEMP);
goto retry;
} else if (error == 0) {
struct scsi_data_compression_page *temp_comp_page;
temp_comp_page = NULL;
/*
* If the user only wants the compression information, and
* the device doesn't send back the block descriptor, it's
* no big deal. If the user wants more than just
* compression, though, and the device doesn't pass back the
* block descriptor, we need to send another mode sense to
* get the block descriptor.
*/
if ((mode_hdr->blk_desc_len == 0)
&& (params_to_get & SA_PARAM_COMPRESSION)
&& ((params_to_get & ~(SA_PARAM_COMPRESSION)) != 0)) {
/*
* Decrease the mode buffer length by the size of
* the compression page, to make sure the data
* there doesn't get overwritten.
*/
mode_buffer_len -= sizeof(*ncomp_page);
/*
* Now move the compression page that we presumably
* got back down the memory chunk a little bit so
* it doesn't get spammed.
*/
temp_comp_page =
(struct scsi_data_compression_page *)&mode_hdr[1];
bcopy(temp_comp_page, ncomp_page, sizeof(*ncomp_page));
/*
* Now, we issue another mode sense and just ask
* for the block descriptor, etc.
*/
scsi_mode_sense(&ccb->csio,
/*retries*/ 1,
/*cbfcnp*/ sadone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*dbd*/ FALSE,
/*page_code*/ SMS_PAGE_CTRL_CURRENT,
/*page*/ SMS_VENDOR_SPECIFIC_PAGE,
/*param_buf*/ mode_buffer,
/*param_len*/ mode_buffer_len,
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 5000);
error = cam_periph_runccb(ccb, saerror, /*cam_flags*/ 0,
/*sense_flags*/ 0,
&softc->device_stats);
if (error != 0)
goto sagetparamsexit;
}
if (params_to_get & SA_PARAM_BLOCKSIZE)
*blocksize = scsi_3btoul(mode_blk->blklen);
if (params_to_get & SA_PARAM_NUMBLOCKS)
*numblocks = scsi_3btoul(mode_blk->nblocks);
if (params_to_get & SA_PARAM_BUFF_MODE)
*buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
if (params_to_get & SA_PARAM_DENSITY)
*density = mode_blk->density;
if (params_to_get & SA_PARAM_WP)
*write_protect = (mode_hdr->dev_spec & SMH_SA_WP) ?
TRUE : FALSE;
if (params_to_get & SA_PARAM_SPEED)
*speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
if (params_to_get & SA_PARAM_COMPRESSION) {
*comp_supported =(ncomp_page->dce_and_dcc & SA_DCP_DCC)?
TRUE : FALSE;
*comp_enabled = (ncomp_page->dce_and_dcc & SA_DCP_DCE)?
TRUE : FALSE;
*comp_algorithm =
scsi_4btoul(ncomp_page->comp_algorithm);
if (comp_page != NULL)
bcopy(ncomp_page, comp_page,sizeof(*comp_page));
}
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
int idx;
char *xyz = mode_buffer;
xpt_print_path(periph->path);
printf("Mode Sense Data=");
for (idx = 0; idx < mode_buffer_len; idx++)
printf(" 0x%02x", xyz[idx] & 0xff);
printf("\n");
}
} else if (status == CAM_SCSI_STATUS_ERROR) {
/* Tell the user about the fatal error. */
scsi_sense_print(&ccb->csio);
}
sagetparamsexit:
xpt_release_ccb(ccb);
free(mode_buffer, M_TEMP);
return(error);
}
/*
* The purpose of this function is to set one of four different parameters
* for a tape drive:
* - blocksize
* - density
* - compression / compression algorithm
* - buffering mode
*
* The assumption is that this will be called from saioctl(), and therefore
* from a process context. Thus the waiting malloc calls below. If that
* assumption ever changes, the malloc calls should be changed to be
* NOWAIT mallocs.
*
* Any or all of the four parameters may be set when this function is
* called. It should handle setting more than one parameter at once.
*/
static int
sasetparams(struct cam_periph *periph, sa_params params_to_set,
u_int32_t blocksize, u_int8_t density, u_int32_t comp_algorithm,
u_int32_t sense_flags)
{
struct sa_softc *softc;
u_int32_t current_blocksize;
u_int32_t current_comp_algorithm;
u_int8_t current_density;
u_int8_t current_speed;
int comp_enabled, comp_supported;
void *mode_buffer;
int mode_buffer_len;
struct scsi_mode_header_6 *mode_hdr;
struct scsi_mode_blk_desc *mode_blk;
struct scsi_data_compression_page *comp_page;
struct scsi_data_compression_page *current_comp_page;
int buff_mode;
union ccb *ccb;
int error;
softc = (struct sa_softc *)periph->softc;
/* silence the compiler */
ccb = NULL;
current_comp_page = malloc(sizeof(*current_comp_page),M_TEMP, M_WAITOK);
/*
* Since it doesn't make sense to set the number of blocks, or
* write protection, we won't try to get the current value. We
* always want to get the blocksize, so we can set it back to the
* proper value.
*/
error = sagetparams(periph, params_to_set | SA_PARAM_BLOCKSIZE |
SA_PARAM_SPEED, &current_blocksize,
&current_density, NULL, &buff_mode, NULL,
&current_speed, &comp_supported, &comp_enabled,
&current_comp_algorithm, current_comp_page);
if (error != 0) {
free(current_comp_page, M_TEMP);
return(error);
}
mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
if (params_to_set & SA_PARAM_COMPRESSION)
mode_buffer_len += sizeof(struct scsi_data_compression_page);
mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK);
bzero(mode_buffer, mode_buffer_len);
mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
if (params_to_set & SA_PARAM_COMPRESSION) {
comp_page = (struct scsi_data_compression_page *)&mode_blk[1];
bcopy(current_comp_page, comp_page, sizeof(*comp_page));
} else
comp_page = NULL;
/*
* If the caller wants us to set the blocksize, use the one they
* pass in. Otherwise, use the blocksize we got back from the
* mode select above.
*/
if (params_to_set & SA_PARAM_BLOCKSIZE)
scsi_ulto3b(blocksize, mode_blk->blklen);
else
scsi_ulto3b(current_blocksize, mode_blk->blklen);
/*
* Set density if requested, else preserve old density.
* SCSI_SAME_DENSITY only applies to SCSI-2 or better
* devices, else density we've latched up in our softc.
*/
if (params_to_set & SA_PARAM_DENSITY) {
mode_blk->density = density;
} else if (softc->scsi_rev > SCSI_REV_CCS) {
mode_blk->density = SCSI_SAME_DENSITY;
} else {
mode_blk->density = softc->media_density;
}
/*
* For mode selects, these two fields must be zero.
*/
mode_hdr->data_length = 0;
mode_hdr->medium_type = 0;
/* set the speed to the current value */
mode_hdr->dev_spec = current_speed;
/* set single-initiator buffering mode */
mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
/*
* First, if the user wants us to set the compression algorithm or
* just turn compression on, check to make sure that this drive
* supports compression.
*/
if ((params_to_set & SA_PARAM_COMPRESSION)
&& (current_comp_page->dce_and_dcc & SA_DCP_DCC)) {
/*
* If the compression algorithm is 0, disable compression.
* If the compression algorithm is non-zero, enable
* compression and set the compression type to the
* specified compression algorithm, unless the algorithm is
* MT_COMP_ENABLE. In that case, we look at the
* compression algorithm that is currently set and if it is
* non-zero, we leave it as-is. If it is zero, and we have
* saved a compression algorithm from a time when
* compression was enabled before, set the compression to
* the saved value.
*/
if (comp_algorithm == 0) {
/* disable compression */
comp_page->dce_and_dcc &= ~SA_DCP_DCE;
} else {
/* enable compression */
comp_page->dce_and_dcc |= SA_DCP_DCE;
/* enable decompression */
comp_page->dde_and_red |= SA_DCP_DDE;
if (comp_algorithm != MT_COMP_ENABLE) {
/* set the compression algorithm */
scsi_ulto4b(comp_algorithm,
comp_page->comp_algorithm);
} else if ((scsi_4btoul(comp_page->comp_algorithm) == 0)
&& (softc->saved_comp_algorithm != 0)) {
scsi_ulto4b(softc->saved_comp_algorithm,
comp_page->comp_algorithm);
}
}
} else if (params_to_set & SA_PARAM_COMPRESSION) {
/*
* The drive doesn't support compression, so turn off the
* set compression bit.
*/
params_to_set &= ~SA_PARAM_COMPRESSION;
/*
* Should probably do something other than a printf...like
* set a flag in the softc saying that this drive doesn't
* support compression.
*/
xpt_print_path(periph->path);
printf("sasetparams: device does not support compression\n");
/*
* If that was the only thing the user wanted us to set,
* clean up allocated resources and return with 'operation
* not supported'.
*/
if (params_to_set == SA_PARAM_NONE) {
free(mode_buffer, M_TEMP);
return(ENODEV);
}
/*
* That wasn't the only thing the user wanted us to set.
* So, decrease the stated mode buffer length by the size
* of the compression mode page.
*/
mode_buffer_len -= sizeof(*comp_page);
}
ccb = cam_periph_getccb(periph, /*priority*/ 1);
scsi_mode_select(&ccb->csio,
/*retries*/1,
/*cbfcnp*/ sadone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*scsi_page_fmt*/(params_to_set & SA_PARAM_COMPRESSION)?
TRUE : FALSE,
/*save_pages*/ FALSE,
/*param_buf*/ mode_buffer,
/*param_len*/ mode_buffer_len,
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 5000);
error = cam_periph_runccb(ccb, saerror, /*cam_flags*/ 0,
sense_flags, &softc->device_stats);
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO) ||
params_to_set == SA_PARAM_BUFF_MODE) {
int idx;
char *xyz = mode_buffer;
xpt_print_path(periph->path);
printf("Err%d, Mode Select Data=", error);
for (idx = 0; idx < mode_buffer_len; idx++)
printf(" 0x%02x", xyz[idx] & 0xff);
printf("\n");
}
if (error == 0) {
xpt_release_ccb(ccb);
} else {
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
/*
* If we were setting the blocksize, and that failed, we
* want to set it to its original value. If we weren't
* setting the blocksize, we don't want to change it.
*/
scsi_ulto3b(current_blocksize, mode_blk->blklen);
/*
* Set density if requested, else preserve old density.
* SCSI_SAME_DENSITY only applies to SCSI-2 or better
* devices, else density we've latched up in our softc.
*/
if (params_to_set & SA_PARAM_DENSITY) {
mode_blk->density = current_density;
} else if (softc->scsi_rev > SCSI_REV_CCS) {
mode_blk->density = SCSI_SAME_DENSITY;
} else {
mode_blk->density = softc->media_density;
}
if (params_to_set & SA_PARAM_COMPRESSION)
bcopy(current_comp_page, comp_page,
sizeof(struct scsi_data_compression_page));
/*
* The retry count is the only CCB field that might have been
* changed that we care about, so reset it back to 1.
*/
ccb->ccb_h.retry_count = 1;
cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
xpt_release_ccb(ccb);
}
if (current_comp_page != NULL)
free(current_comp_page, M_TEMP);
if (params_to_set & SA_PARAM_COMPRESSION) {
if (error) {
softc->flags &= ~SA_FLAG_COMP_ENABLED;
softc->saved_comp_algorithm = softc->comp_algorithm;
softc->comp_algorithm = 0;
} else {
softc->flags |= SA_FLAG_COMP_ENABLED;
softc->comp_algorithm = comp_algorithm;
}
}
free(mode_buffer, M_TEMP);
return(error);
}
static void
saprevent(struct cam_periph *periph, int action)
{
struct sa_softc *softc;
union ccb *ccb;
int error, sf;
softc = (struct sa_softc *)periph->softc;
if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
return;
if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
return;
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO))
sf = 0;
else
sf = SF_QUIET_IR;
ccb = cam_periph_getccb(periph, 1);
/* It is safe to retry this operation */
scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
SSD_FULL_SIZE, 60000);
/*
* We can be quiet about illegal requests.
*/
error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
if (error == 0) {
if (action == PR_ALLOW)
softc->flags &= ~SA_FLAG_TAPE_LOCKED;
else
softc->flags |= SA_FLAG_TAPE_LOCKED;
}
xpt_release_ccb(ccb);
}
static int
sarewind(struct cam_periph *periph)
{
union ccb *ccb;
struct sa_softc *softc;
int error;
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/1);
/* It is safe to retry this operation */
scsi_rewind(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
SSD_FULL_SIZE, (SA_REWIND_TIMEOUT) * 60 * 1000);
softc->dsreg = MTIO_DSREG_REW;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
xpt_release_ccb(ccb);
if (error == 0)
softc->fileno = softc->blkno = (daddr_t) 0;
else
softc->fileno = softc->blkno = (daddr_t) -1;
return (error);
}
static int
saspace(struct cam_periph *periph, int count, scsi_space_code code)
{
union ccb *ccb;
struct sa_softc *softc;
int error;
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/1);
/* This cannot be retried */
scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
SSD_FULL_SIZE, (SA_SPACE_TIMEOUT) * 60 * 1000);
softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
xpt_release_ccb(ccb);
/*
* If a spacing operation has failed, we need to invalidate
* this mount.
*
* If the spacing operation was setmarks or to end of recorded data,
* we no longer know our relative position.
*
* We are not managing residuals here (really).
*/
if (error) {
softc->fileno = softc->blkno = (daddr_t) -1;
} else if (code == SS_SETMARKS || code == SS_EOD) {
softc->fileno = softc->blkno = (daddr_t) -1;
} else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
softc->fileno += count;
softc->blkno = 0;
} else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
softc->blkno += count;
}
return (error);
}
static int
sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
{
union ccb *ccb;
struct sa_softc *softc;
int error;
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/1);
softc->dsreg = MTIO_DSREG_FMK;
/* this *must* not be retried */
scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000);
softc->dsreg = MTIO_DSREG_REST;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
/*
* XXXX: Get back the actual number of filemarks written
* XXXX: (there can be a residual).
*/
if (error == 0 && nmarks) {
struct sa_softc *softc = (struct sa_softc *)periph->softc;
softc->filemarks += nmarks;
}
xpt_release_ccb(ccb);
/*
* Update relative positions (if we're doing that).
*/
if (error) {
softc->fileno = softc->blkno = (daddr_t) -1;
} else if (softc->fileno != (daddr_t) -1) {
softc->fileno += nmarks;
softc->blkno = 0;
}
return (error);
}
static int
sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
{
struct scsi_tape_position_data loc;
union ccb *ccb;
struct sa_softc *softc;
int error;
/*
* First flush any pending writes...
*/
error = sawritefilemarks(periph, 0, 0);
/*
* The latter case is for 'write protected' tapes
* which are too stupid to recognize a zero count
* for writing filemarks as a no-op.
*/
if (error != 0 && error != EACCES)
return (error);
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/1);
scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
hard, &loc, SSD_FULL_SIZE, 5000);
softc->dsreg = MTIO_DSREG_RBSY;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
if (error == 0) {
if (loc.flags & SA_RPOS_UNCERTAIN) {
error = EINVAL; /* nothing is certain */
} else {
*blkptr = scsi_4btoul(loc.firstblk);
}
}
xpt_release_ccb(ccb);
return (error);
}
static int
sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
{
union ccb *ccb;
struct sa_softc *softc;
int error;
/*
* First flush any pending writes...
*/
error = sawritefilemarks(periph, 0, 0);
/*
* The latter case is for 'write protected' tapes
* which are too stupid to recognize a zero count
* for writing filemarks as a no-op.
*/
if (error != 0 && error != EACCES)
return (error);
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/1);
scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000);
softc->dsreg = MTIO_DSREG_POS;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
xpt_release_ccb(ccb);
/*
* Note relative file && block number position now unknown (if
* these things ever start being maintained in this driver).
*
* Do this for any kind of error (to be safe).
*/
softc->fileno = softc->blkno = (daddr_t) -1;
return (error);
}
static int
saretension(struct cam_periph *periph)
{
union ccb *ccb;
struct sa_softc *softc;
int error;
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/1);
/* It is safe to retry this operation */
scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
FALSE, TRUE, TRUE, SSD_FULL_SIZE, (SA_ERASE_TIMEOUT) * 60 * 1000);
softc->dsreg = MTIO_DSREG_TEN;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
xpt_release_ccb(ccb);
if (error == 0)
softc->fileno = softc->blkno = (daddr_t) 0;
else
softc->fileno = softc->blkno = (daddr_t) -1;
return(error);
}
static int
sareservereleaseunit(struct cam_periph *periph, int reserve)
{
union ccb *ccb;
struct sa_softc *softc;
int error, sflag;
softc = (struct sa_softc *)periph->softc;
/*
* We set SF_RETRY_UA, since this is often the first command run
* when a tape device is opened, and there may be a unit attention
* condition pending.
*/
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO))
sflag = SF_RETRY_UA;
else
sflag = SF_RETRY_UA|SF_QUIET_IR;
ccb = cam_periph_getccb(periph, 1);
/* It is safe to retry this operation */
scsi_reserve_release_unit(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
FALSE, 0, SSD_FULL_SIZE, 5000, reserve);
softc->dsreg = MTIO_DSREG_RBSY;
error = cam_periph_runccb(ccb, saerror, 0, sflag, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
xpt_release_ccb(ccb);
/*
* If the error was Illegal Request, then the device doesn't support
* RESERVE/RELEASE. This is not an error.
*/
if (error == EINVAL) {
error = 0;
}
return (error);
}
static int
saloadunload(struct cam_periph *periph, int load)
{
union ccb *ccb;
struct sa_softc *softc;
int error;
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/1);
/* It is safe to retry this operation */
scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
FALSE, FALSE, load, SSD_FULL_SIZE, 60000);
softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
xpt_release_ccb(ccb);
if (error || load == 0)
softc->fileno = softc->blkno = (daddr_t) -1;
else if (error == 0)
softc->fileno = softc->blkno = (daddr_t) 0;
return (error);
}
static int
saerase(struct cam_periph *periph, int longerase)
{
union ccb *ccb;
struct sa_softc *softc;
int error;
softc = (struct sa_softc *)periph->softc;
ccb = cam_periph_getccb(periph, /*priority*/ 1);
scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
SSD_FULL_SIZE, (SA_ERASE_TIMEOUT) * 60 * 1000);
softc->dsreg = MTIO_DSREG_ZER;
error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
softc->dsreg = MTIO_DSREG_REST;
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
xpt_release_ccb(ccb);
return (error);
}
#endif /* KERNEL */
/*
* Read tape block limits command.
*/
void
scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action,
struct scsi_read_block_limits_data *rlimit_buf,
u_int8_t sense_len, u_int32_t timeout)
{
struct scsi_read_block_limits *scsi_cmd;
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/CAM_DIR_IN,
tag_action,
/*data_ptr*/(u_int8_t *)rlimit_buf,
/*dxfer_len*/sizeof(*rlimit_buf),
sense_len,
sizeof(*scsi_cmd),
timeout);
scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->opcode = READ_BLOCK_LIMITS;
}
void
scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int readop, int sli,
int fixed, u_int32_t length, u_int8_t *data_ptr,
u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
{
struct scsi_sa_rw *scsi_cmd;
scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
scsi_cmd->sli_fixed = 0;
if (sli && readop)
scsi_cmd->sli_fixed |= SAR_SLI;
if (fixed)
scsi_cmd->sli_fixed |= SARW_FIXED;
scsi_ulto3b(length, scsi_cmd->length);
scsi_cmd->control = 0;
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/readop ? CAM_DIR_IN : CAM_DIR_OUT,
tag_action,
data_ptr,
dxfer_len,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
void
scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int immediate, int eot,
int reten, int load, u_int8_t sense_len,
u_int32_t timeout)
{
struct scsi_load_unload *scsi_cmd;
scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->opcode = LOAD_UNLOAD;
if (immediate)
scsi_cmd->immediate = SLU_IMMED;
if (eot)
scsi_cmd->eot_reten_load |= SLU_EOT;
if (reten)
scsi_cmd->eot_reten_load |= SLU_RETEN;
if (load)
scsi_cmd->eot_reten_load |= SLU_LOAD;
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/CAM_DIR_NONE,
tag_action,
/*data_ptr*/NULL,
/*dxfer_len*/0,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
void
scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int immediate, u_int8_t sense_len,
u_int32_t timeout)
{
struct scsi_rewind *scsi_cmd;
scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->opcode = REWIND;
if (immediate)
scsi_cmd->immediate = SREW_IMMED;
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/CAM_DIR_NONE,
tag_action,
/*data_ptr*/NULL,
/*dxfer_len*/0,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
void
scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, scsi_space_code code,
u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
{
struct scsi_space *scsi_cmd;
scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
scsi_cmd->opcode = SPACE;
scsi_cmd->code = code;
scsi_ulto3b(count, scsi_cmd->count);
scsi_cmd->control = 0;
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/CAM_DIR_NONE,
tag_action,
/*data_ptr*/NULL,
/*dxfer_len*/0,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
void
scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int immediate, int setmark,
u_int32_t num_marks, u_int8_t sense_len,
u_int32_t timeout)
{
struct scsi_write_filemarks *scsi_cmd;
scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->opcode = WRITE_FILEMARKS;
if (immediate)
scsi_cmd->byte2 |= SWFMRK_IMMED;
if (setmark)
scsi_cmd->byte2 |= SWFMRK_WSMK;
scsi_ulto3b(num_marks, scsi_cmd->num_marks);
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/CAM_DIR_NONE,
tag_action,
/*data_ptr*/NULL,
/*dxfer_len*/0,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
/*
* The reserve and release unit commands differ only by their opcodes.
*/
void
scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int third_party,
int third_party_id, u_int8_t sense_len,
u_int32_t timeout, int reserve)
{
struct scsi_reserve_release_unit *scsi_cmd;
scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
if (reserve)
scsi_cmd->opcode = RESERVE_UNIT;
else
scsi_cmd->opcode = RELEASE_UNIT;
if (third_party) {
scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
scsi_cmd->lun_thirdparty |=
((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
}
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/ CAM_DIR_NONE,
tag_action,
/*data_ptr*/ NULL,
/*dxfer_len*/ 0,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
void
scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int immediate, int long_erase,
u_int8_t sense_len, u_int32_t timeout)
{
struct scsi_erase *scsi_cmd;
scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->opcode = ERASE;
if (immediate)
scsi_cmd->lun_imm_long |= SE_IMMED;
if (long_erase)
scsi_cmd->lun_imm_long |= SE_LONG;
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/ CAM_DIR_NONE,
tag_action,
/*data_ptr*/ NULL,
/*dxfer_len*/ 0,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
/*
* Read Tape Position command.
*/
void
scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int hardsoft,
struct scsi_tape_position_data *sbp,
u_int8_t sense_len, u_int32_t timeout)
{
struct scsi_tape_read_position *scmd;
cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
(u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
bzero(scmd, sizeof(*scmd));
scmd->opcode = READ_POSITION;
scmd->byte1 = hardsoft;
}
/*
* Set Tape Position command.
*/
void
scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, int hardsoft, u_int32_t blkno,
u_int8_t sense_len, u_int32_t timeout)
{
struct scsi_tape_locate *scmd;
cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
(u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
bzero(scmd, sizeof(*scmd));
scmd->opcode = LOCATE;
if (hardsoft)
scmd->byte1 |= SA_SPOS_BT;
scsi_ulto4b(blkno, scmd->blkaddr);
}
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