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Add in block position/block locate functions.

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This commit is contained in:
Matt Jacob 1998-12-18 04:31:43 +00:00
parent d902101e8e
commit b5c6d4c555
1 changed files with 141 additions and 21 deletions
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162
sys/cam/scsi/scsi_sa.c
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@ -25,7 +25,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: scsi_sa.c,v 1.7 1998/12/11 07:19:36 mjacob Exp $
* $Id: scsi_sa.c,v 1.8 1998/12/17 18:56:23 mjacob Exp $
*/
#include <sys/param.h>
@ -218,6 +218,9 @@ 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 =
{
@ -792,6 +795,18 @@ saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p)
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;
@ -2274,41 +2289,105 @@ sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
ccb = cam_periph_getccb(periph, /*priority*/1);
scsi_write_filemarks(&ccb->csio,
/*retries*/1,
/*cbcfp*/sadone,
MSG_SIMPLE_Q_TAG,
/*immediate*/FALSE,
setmarks,
nmarks,
SSD_FULL_SIZE,
60000);
scsi_write_filemarks(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000);
error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0,
/*sense_flags*/0, &softc->device_stats);
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,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
/*
* XXXX: Actually, we need to get back the actual number of filemarks
* XXXX: written (there can be a residual).
*/
if (error == 0) {
struct sa_softc *softc;
softc = (struct sa_softc *)periph->softc;
if (error == 0 && nmarks) {
struct sa_softc *softc = (struct sa_softc *)periph->softc;
softc->filemarks += nmarks;
}
xpt_release_ccb(ccb);
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);
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, 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);
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, 0);
xpt_release_ccb(ccb);
/*
* XXX: Note relative file && block number position now unknown (if
* XXX: these things ever start being maintained in this driver).
*/
return (error);
}
static int
saretension(struct cam_periph *periph)
{
@ -2712,3 +2791,44 @@ scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
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);
}