static void
ncr5380_minphys(struct buf *bp)
{
if (bp->b_bcount > MIN_PHYS)
bp->b_bcount = MIN_PHYS;
minphys(bp);
}
void
wdc_atapi_minphys (struct buf *bp, struct scsi_link *sl)
{
if (bp->b_bcount > MAX_SIZE)
bp->b_bcount = MAX_SIZE;
minphys(bp);
}
void
umass_scsi_minphys(struct buf *bp, struct scsi_link *sl)
{
if (bp->b_bcount > UMASS_MAX_TRANSFER_SIZE)
bp->b_bcount = UMASS_MAX_TRANSFER_SIZE;
minphys(bp);
}
static void
wdc_atapi_minphys(struct buf *bp)
{
if (bp->b_bcount > MAX_SIZE)
bp->b_bcount = MAX_SIZE;
minphys(bp);
}
static void
se_minphys(struct buf *bp)
{
if (bp->b_bcount > MAX_DMA_LEN)
bp->b_bcount = MAX_DMA_LEN;
minphys(bp);
}
/*
* default minphys routine for esc based controllers
*/
void
esc_minphys(struct buf *bp)
{
/*
* No max transfer at this level.
*/
minphys(bp);
}
void
spifi_minphys(struct buf *bp)
{
if (bp->b_bcount > 64 * 1024)
bp->b_bcount = 64 * 1024;
minphys(bp);
}
/*
* Adjust the size of a transfer.
*/
static void
ldminphys(struct buf *bp)
{
struct ld_softc *sc;
sc = device_lookup(&ld_cd, DISKUNIT(bp->b_dev));
if (bp->b_bcount > sc->sc_maxxfer)
bp->b_bcount = sc->sc_maxxfer;
minphys(bp);
}
Static void
umass_scsipi_minphys(struct buf *bp)
{
#ifdef DIAGNOSTIC
if (bp->b_bcount <= 0) {
printf("umass_scsipi_minphys count(%d) <= 0\n",
bp->b_bcount);
bp->b_bcount = UMASS_MAX_TRANSFER_SIZE;
}
#endif
if (bp->b_bcount > UMASS_MAX_TRANSFER_SIZE)
bp->b_bcount = UMASS_MAX_TRANSFER_SIZE;
minphys(bp);
}
/*
* limit the transfer as required.
*/
void
asc_minphys(struct buf *bp)
{
#if 0
/*
* We must limit the DMA xfer size
*/
if (bp->b_bcount > MAX_DMA_LEN) {
printf("asc: Reducing DMA length\n");
bp->b_bcount = MAX_DMA_LEN;
}
#endif
minphys(bp);
}
void
ahd_minphys(struct buf *bp, struct scsi_link *sl)
{
/*
* Even though the card can transfer up to 16megs per command
* we are limited by the number of segments in the dma segment
* list that we can hold. The worst case is that all pages are
* discontinuous physically, hence the "page per segment" limit
* enforced here.
*/
if (bp->b_bcount > ((AHD_NSEG - 1) * PAGE_SIZE)) {
bp->b_bcount = ((AHD_NSEG - 1) * PAGE_SIZE);
}
minphys(bp);
}
static void
sw_minphys(struct buf *bp)
{
if (bp->b_bcount > MAX_DMA_LEN) {
#ifdef DEBUG
if (sw_debug) {
printf("sw_minphys len = 0x%x.\n", MAX_DMA_LEN);
Debugger();
}
#endif
bp->b_bcount = MAX_DMA_LEN;
}
minphys(bp);
}
/* ARGSUSED */
static int
_raw_maxfbas(dev_t dev, int flag, nsc_size_t *ptr)
{
struct buf *bp;
if (flag == NSC_CACHEBLK)
*ptr = 1;
else {
if (nsc_rawmaxfbas == 0) {
bp = getrbuf(KM_SLEEP);
bp->b_bcount = 4096 * 512;
minphys(bp);
nsc_rawmaxfbas = FBA_NUM(bp->b_bcount);
freerbuf(bp);
}
*ptr = nsc_rawmaxfbas;
}
return (0);
}
