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Linux kernel mirror (for testing)
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linux
1#ifndef __ASM_CPU_SH3_DMA_H
2#define __ASM_CPU_SH3_DMA_H
3
4
5#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
6 defined(CONFIG_CPU_SUBTYPE_SH7721) || \
7 defined(CONFIG_CPU_SUBTYPE_SH7709)
8#define SH_DMAC_BASE 0xa4010020
9
10#define DMTE0_IRQ 48
11#define DMTE1_IRQ 49
12#define DMTE2_IRQ 50
13#define DMTE3_IRQ 51
14#define DMTE4_IRQ 76
15#define DMTE5_IRQ 77
16
17#else
18#define SH_DMAC_BASE 0xa4000020
19#endif
20
21/* Definitions for the SuperH DMAC */
22#define TM_BURST 0x00000020
23#define TS_8 0x00000000
24#define TS_16 0x00000008
25#define TS_32 0x00000010
26#define TS_128 0x00000018
27
28#define CHCR_TS_MASK 0x18
29#define CHCR_TS_SHIFT 3
30
31#define DMAOR_INIT DMAOR_DME
32
33/*
34 * The SuperH DMAC supports a number of transmit sizes, we list them here,
35 * with their respective values as they appear in the CHCR registers.
36 */
37enum {
38 XMIT_SZ_8BIT,
39 XMIT_SZ_16BIT,
40 XMIT_SZ_32BIT,
41 XMIT_SZ_128BIT,
42};
43
44static unsigned int ts_shift[] __maybe_unused = {
45 [XMIT_SZ_8BIT] = 0,
46 [XMIT_SZ_16BIT] = 1,
47 [XMIT_SZ_32BIT] = 2,
48 [XMIT_SZ_128BIT] = 4,
49};
50
51#endif /* __ASM_CPU_SH3_DMA_H */