/*
* Queue a transfer request, and if possible, hand it to the controller.
*/
void
rastrategy(struct buf *bp)
{
struct ra_softc *ra = mscp_device_lookup(bp->b_dev);
int b;
/*
* Make sure this is a reasonable drive to use.
*/
if (ra == NULL) {
bp->b_error = ENXIO;
goto done;
}
/*
* If drive is open `raw' or reading label, let it at it.
*/
if (ra->ra_state == DK_RDLABEL) {
/* Make some statistics... /bqt */
b = splbio();
disk_busy(&ra->ra_disk);
splx(b);
mscp_strategy(bp, device_parent(ra->ra_dev));
return;
}
/* If disk is not online, try to put it online */
if (ra->ra_state == DK_CLOSED)
if (ra_putonline(bp->b_dev, ra) == MSCP_FAILED) {
bp->b_error = EIO;
goto done;
}
/*
* Determine the size of the transfer, and make sure it is
* within the boundaries of the partition.
*/
if (bounds_check_with_label(&ra->ra_disk, bp, ra->ra_wlabel) <= 0)
goto done;
/* Make some statistics... /bqt */
b = splbio();
disk_busy(&ra->ra_disk);
splx(b);
mscp_strategy(bp, device_parent(ra->ra_dev));
return;
done:
biodone(bp);
}
/*
* Queue a transfer request, and if possible, hand it to the controller.
*
* This routine is broken into two so that the internal version
* udastrat1() can be called by the (nonexistent, as yet) bad block
* revectoring routine.
*/
void
rxstrategy(struct buf *bp)
{
int unit;
struct rx_softc *rx;
int b;
/*
* Make sure this is a reasonable drive to use.
*/
unit = DISKUNIT(bp->b_dev);
if ((rx = device_lookup_private(&rx_cd, unit)) == NULL) {
bp->b_error = ENXIO;
goto done;
}
/* If disk is not online, try to put it online */
if (rx->ra_state == DK_CLOSED)
if (rx_putonline(rx) == MSCP_FAILED) {
bp->b_error = EIO;
goto done;
}
/*
* Determine the size of the transfer, and make sure it is
* within the boundaries of the partition.
*/
if (bp->b_blkno >= rx->ra_disk.dk_label->d_secperunit) {
bp->b_resid = bp->b_bcount;
goto done;
}
/* Make some statistics... /bqt */
b = splbio();
disk_busy(&rx->ra_disk);
splx(b);
mscp_strategy(bp, device_parent(rx->ra_dev));
return;
done:
biodone(bp);
}
void
mtstrategy(struct buf *bp)
{
int unit;
struct mt_softc *mt;
/*
* Make sure this is a reasonable drive to use.
*/
unit = mtunit(bp->b_dev);
if ((mt = device_lookup_private(&mt_cd, unit)) == NULL) {
bp->b_error = ENXIO;
biodone(bp);
return;
}
mt->mt_waswrite = bp->b_flags & B_READ ? 0 : 1;
mscp_strategy(bp, device_parent(mt->mt_dev));
return;
}