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-rw-r--r--include/asm-sh64/dma.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/include/asm-sh64/dma.h b/include/asm-sh64/dma.h
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1#ifndef __ASM_SH64_DMA_H
2#define __ASM_SH64_DMA_H
3
4/*
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 *
9 * include/asm-sh64/dma.h
10 *
11 * Copyright (C) 2000, 2001 Paolo Alberelli
12 * Copyright (C) 2003 Paul Mundt
13 *
14 */
15
16#include <linux/mm.h>
17#include <asm/io.h>
18#include <asm/pgtable.h>
19
20#define MAX_DMA_CHANNELS 4
21
22/*
23 * SH5 can DMA in any memory area.
24 *
25 * The static definition is dodgy because it should limit
26 * the highest DMA-able address based on the actual
27 * Physical memory available. This is actually performed
28 * at run time in defining the memory allowed to DMA_ZONE.
29 */
30#define MAX_DMA_ADDRESS ~(NPHYS_MASK)
31
32#define DMA_MODE_READ 0
33#define DMA_MODE_WRITE 1
34
35#ifdef CONFIG_PCI
36extern int isa_dma_bridge_buggy;
37#else
38#define isa_dma_bridge_buggy (0)
39#endif
40
41#endif /* __ASM_SH64_DMA_H */