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Need to set BUS_DMA_COHERENT to BUS_DMA_NOCACHE on IBM ppc4xx CPUs. 

The "emac" interface now works properly again on my Walnut.  Much
thanks to Steve Woodford for tracking this down.
This commit is contained in:
simonb 2003-09-03 13:30:05 +00:00
parent 553d2b901f
commit 05c33c1c05
1 changed files with 9 additions and 1 deletions
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10
sys/arch/powerpc/include/bus.h
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@ -1,4 +1,4 @@
/* $NetBSD: bus.h,v 1.12 2003/07/25 10:12:44 scw Exp $ */ /* $NetBSD: bus.h,v 1.13 2003/09/03 13:30:05 simonb Exp $ */
/* $OpenBSD: bus.h,v 1.1 1997/10/13 10:53:42 pefo Exp $ */ /* $OpenBSD: bus.h,v 1.1 1997/10/13 10:53:42 pefo Exp $ */
/*- /*-
@ -104,6 +104,14 @@
#ifndef _POWERPC_BUS_H_ #ifndef _POWERPC_BUS_H_
#define _POWERPC_BUS_H_ #define _POWERPC_BUS_H_
#if defined(_KERNEL_OPT) && !defined(BUS_DMA_COHERENT)
#include "opt_ppcarch.h"
#if defined(PPC_IBM4XX)
#define BUS_DMA_COHERENT BUS_DMA_NOCACHE
#endif /* PPC_IBM4XX */
#endif /* _KERNEL_OPT && !BUS_DMA_COHERENT */
/* /*
* Bus access types. * Bus access types.
*/ */