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authorConstantine Sapuntzakis <csapuntz@cvs.openbsd.org>1999-10-29 17:12:24 +0000
committerConstantine Sapuntzakis <csapuntz@cvs.openbsd.org>1999-10-29 17:12:24 +0000
commit8f834281bc16d80d431d1a68ce79845ab3c833ec (patch)
tree44da11bc84d3dd3e933e2ef0a512a6981aa5adcd
parent32279f3de9f8fa6dd4dcccde68242ff3024156fc (diff)
Added diagnostic: "length 0 transfer in data phase"
Changed SCSI XS_TIMEOUT error to SCSI XS_RESET error to better reflect that we had to reset the bus Don't downgrade DMA modes if the transfer that failed wasn't using DMA
-rw-r--r--sys/dev/atapiscsi/atapiscsi.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/sys/dev/atapiscsi/atapiscsi.c b/sys/dev/atapiscsi/atapiscsi.c
index a4c0d025ca0..74370f81976 100644
--- a/sys/dev/atapiscsi/atapiscsi.c
+++ b/sys/dev/atapiscsi/atapiscsi.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: atapiscsi.c,v 1.15 1999/10/29 01:15:16 deraadt Exp $ */
+/* $OpenBSD: atapiscsi.c,v 1.16 1999/10/29 17:12:23 csapuntz Exp $ */
/*
* This code is derived from code with the copyright below.
@@ -753,8 +753,11 @@ wdc_atapi_intr_drq(chp, xfer, irq)
WDCDEBUG_PRINT(("PHASE_DATA\n"), DEBUG_INTR);
- if (len == 0)
+ if (len == 0) {
+ printf("wdc_atapi_intr_drq: length 0 transfer in "
+ "data phase\n");
goto abort_data;
+ }
if (xfer->c_bcount >= len) {
/* Common case */
@@ -808,7 +811,7 @@ wdc_atapi_intr_drq(chp, xfer, irq)
drvp->n_dmaerrs++;
}
- sc_xfer->error = XS_TIMEOUT;
+ sc_xfer->error = XS_RESET;
wdc_atapi_reset(chp, xfer);
return (1);
@@ -1121,6 +1124,7 @@ wdc_atapi_done(chp, xfer)
struct scsi_xfer *sc_xfer = xfer->cmd;
int need_done = xfer->c_flags & C_NEEDDONE;
struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive];
+ int doing_dma = xfer->c_flags & C_DMA;
WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n",
chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive,
@@ -1131,9 +1135,12 @@ wdc_atapi_done(chp, xfer)
if (drvp->n_dmaerrs ||
(sc_xfer->error != XS_NOERROR && sc_xfer->error != XS_SENSE &&
sc_xfer->error != XS_SHORTSENSE)) {
+#if 0
printf("wdc_atapi_done: sc_xfer->error %d\n", sc_xfer->error);
+#endif
drvp->n_dmaerrs = 0;
- wdc_downgrade_mode(drvp);
+ if (doing_dma)
+ wdc_downgrade_mode(drvp);
}
if (need_done) {