aboutsummaryrefslogtreecommitdiff
path: root/include/asm-arm/arch-ebsa285/dma.h
blob: c43046eb8bc7cfc889c051606b653a3aca6d0565 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/*
 *  linux/include/asm-arm/arch-ebsa285/dma.h
 *
 *  Architecture DMA routines
 *
 *  Copyright (C) 1998,1999 Russell King
 *  Copyright (C) 1998,1999 Philip Blundell
 */
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H

/*
 * This is the maximum DMA address that can be DMAd to.
 */
#define MAX_DMA_ADDRESS		0xffffffff

/*
 * The 21285 has two internal DMA channels; we call these 8 and 9.
 * On CATS hardware we have an additional eight ISA dma channels
 * numbered 0..7.
 */
#define _ISA_DMA(x)		(0+(x))
#define _DC21285_DMA(x)		(8+(x))

#define MAX_DMA_CHANNELS	10

#define DMA_FLOPPY		_ISA_DMA(2)
#define DMA_ISA_CASCADE		_ISA_DMA(4)

#endif /* _ASM_ARCH_DMA_H */