diff options
Diffstat (limited to 'sys/dev/ata/ata.c')
| -rw-r--r-- | sys/dev/ata/ata.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/sys/dev/ata/ata.c b/sys/dev/ata/ata.c index b9ce6f180b8..5a235e9102b 100644 --- a/sys/dev/ata/ata.c +++ b/sys/dev/ata/ata.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ata.c,v 1.9 2001/01/29 02:18:33 niklas Exp $ */ +/* $OpenBSD: ata.c,v 1.10 2001/03/25 13:11:55 csapuntz Exp $ */ /* $NetBSD: ata.c,v 1.9 1999/04/15 09:41:09 bouyer Exp $ */ /* * Copyright (c) 1998 Manuel Bouyer. All rights reserved. @@ -196,6 +196,30 @@ ata_set_mode(drvp, mode, flags) } void +ata_dmaerr(drvp) + struct ata_drive_datas *drvp; +{ + /* + * Downgrade decision: if we get NERRS_MAX in NXFER. + * We start with n_dmaerrs set to NERRS_MAX-1 so that the + * first error within the first NXFER ops will immediatly trigger + * a downgrade. + * If we got an error and n_xfers is bigger than NXFER reset counters. + */ + drvp->n_dmaerrs++; + if (drvp->n_dmaerrs >= NERRS_MAX && drvp->n_xfers <= NXFER) { + wdc_downgrade_mode(drvp); + drvp->n_dmaerrs = NERRS_MAX-1; + drvp->n_xfers = 0; + return; + } + if (drvp->n_xfers > NXFER) { + drvp->n_dmaerrs = 1; /* just got an error */ + drvp->n_xfers = 1; /* restart counting from this error */ + } +} + +void ata_perror(drvp, errno, buf) struct ata_drive_datas *drvp; int errno; |