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add BUS_DMA_PREFETCHABLE flag for bus_dmamem_map(), analog to

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BUS_SPACE_MAP_PREFETCHABLE
This commit is contained in:
macallan 2013-02-04 13:18:35 +00:00
parent c3af88d3bf
commit 1a51a963cb
1 changed files with 3 additions and 1 deletions
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4
sys/sys/bus_proto.h
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@ -1,4 +1,4 @@
/* $NetBSD: bus_proto.h,v 1.6 2011/08/17 10:46:38 martin Exp $ */
/* $NetBSD: bus_proto.h,v 1.7 2013/02/04 13:18:35 macallan Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 2001, 2007 The NetBSD Foundation, Inc.
@ -319,6 +319,8 @@ bool bus_space_handle_is_equal(bus_space_tag_t, bus_space_handle_t,
#define BUS_DMA_READ 0x100 /* mapping is device -> memory only */
#define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */
#define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */
#define BUS_DMA_PREFETCHABLE 0x800 /* hint: map non-cached but allow
* things like write combining */
/* Operations performed by bus_dmamap_sync(). */
#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */