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Disable SCSI interrupts while polling for the transfer to finish. This 

fixes spurious panics while booting my Hades. This bug could also occur
on a TT030.
This commit is contained in:
leo 1998-10-06 09:29:44 +00:00
parent 8a20859c2e
commit 05ebc10205
1 changed files with 10 additions and 7 deletions
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17
sys/arch/atari/dev/atari5380.c
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@ -1,4 +1,4 @@
/* $NetBSD: atari5380.c,v 1.28 1997/08/27 11:23:39 bouyer Exp $ */
/* $NetBSD: atari5380.c,v 1.29 1998/10/06 09:29:44 leo Exp $ */
/*
* Copyright (c) 1995 Leo Weppelman.
@ -375,11 +375,13 @@ tt_poll_edma(SC_REQ *reqp)
* 'dma_ready' to check errors and perform the bookkeeping.
*/
scsi_tt_idisable();
for (;;) {
delay(20);
if (--timeout <= 0) {
ncr_tprint(reqp, "timeout on polled transfer\n");
reqp->xs->error = XS_TIMEOUT;
scsi_tt_ienable();
return(0);
}
dmstat = GET_TT_REG(NCR5380_DMSTAT);
@ -397,6 +399,7 @@ tt_poll_edma(SC_REQ *reqp)
if (dmastat & (SD_BUSERR|SD_ZERO))
break;
}
scsi_tt_ienable();
return(1);
}
@ -597,6 +600,12 @@ extern int *nofault;
}
}
/*
* OK. No bus error occurred above. Clear the nofault flag
* so we no longer short-circuit bus errors.
*/
nofault = (int *) 0;
/*
* Schedule an interrupt
*/
@ -608,12 +617,6 @@ extern int *nofault;
*/
SCSI_DMA->s_dma_ctrl &= ~SD_ENABLE;
/*
* OK. No bus error occurred above. Clear the nofault flag
* so we no longer short-circuit bus errors.
*/
nofault = (int *) 0;
/*
* Update the DMA 'registers' to reflect that all bytes
* have been transfered and tell this to the 5380 too.