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When doing the cacheflush for MIPS1, adjust the length to account for 

an unaligned buffer.  The last word of the buffer was not getting flushed
if the buffer was unaligned and fit in a single DMA segment.  Now dump(8)
works on both MIPS1 and MIPS3 DECstations.
This commit is contained in:
mhitch 2000-11-05 21:02:13 +00:00
parent 392621627b
commit d458239a94
1 changed files with 3 additions and 2 deletions
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5
sys/dev/tc/asc_ioasic.c
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@ -1,4 +1,4 @@
/* $NetBSD: asc_ioasic.c,v 1.22 2000/09/28 03:11:29 mhitch Exp $ */
/* $NetBSD: asc_ioasic.c,v 1.23 2000/11/05 21:02:13 mhitch Exp $ */
/*
* Copyright 1996 The Board of Trustees of The Leland Stanford
@ -174,7 +174,8 @@ asic_dma_start(asc, state, cp, flag, len, off)
/* If not R4K, need to invalidate cache lines for both physical segments */
if (!CPUISMIPS3 && flag == ASCDMA_READ) {
MachFlushDCache(MIPS_PHYS_TO_KSEG0(phys),
nphys == 0xffffffff ? len : NBPG - (phys & (NBPG - 1)));
nphys == 0xffffffff ? len + ((vaddr_t)cp & 7) :
NBPG - (phys & (NBPG - 1)));
if (nphys != 0xffffffff)
MachFlushDCache(MIPS_PHYS_TO_KSEG0(nphys),
NBPG); /* XXX */