diff options
| author | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 1999-10-28 19:59:28 +0000 |
|---|---|---|
| committer | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 1999-10-28 19:59:28 +0000 |
| commit | 285f8809474ef89dec537b3b4c39c14d080002d1 (patch) | |
| tree | 11ee19ca45cdd27a0cbbc9efe73834cf3d673178 /sys | |
| parent | 3b546b79efeab130bec997fd1a1a751a92eb52f4 (diff) | |
Downgrade to mode 2 first if we were udma > 2; from NetBSD. costa@ ok.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/ic/wdc.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/dev/ic/wdc.c b/sys/dev/ic/wdc.c index 270ebaff974..620c74a9ec7 100644 --- a/sys/dev/ic/wdc.c +++ b/sys/dev/ic/wdc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: wdc.c,v 1.10 1999/10/09 03:42:04 csapuntz Exp $ */ +/* $OpenBSD: wdc.c,v 1.11 1999/10/28 19:59:27 fgsch Exp $ */ /* $NetBSD: wdc.c,v 1.68 1999/06/23 19:00:17 bouyer Exp $ */ @@ -1045,6 +1045,16 @@ wdc_downgrade_mode(drvp) return 0; /* + * If we were using Ultra-DMA mode > 2, downgrade to mode 2 first. + * Maybe we didn't properly notice the cable type + */ + if ((drvp->drive_flags & DRIVE_UDMA) && drvp->UDMA_mode > 2) { + drvp->UDMA_mode = 2; + printf("%s: transfer error, downgrading to DMA mode %d\n", + drv_dev->dv_xname, drvp->UDMA_mode); + } + + /* * If we were using ultra-DMA, don't downgrade to multiword DMA * if we noticed a CRC error. It has been noticed that CRC errors * in ultra-DMA lead to silent data corruption in multiword DMA. |