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/arch/sh/include/asm/dma-register.h

http://github.com/mirrors/linux
C Header | 50 lines | 34 code | 4 blank | 12 comment | 0 complexity | 50e58bddc796913273ab3eb6cab177e6 MD5 | raw file
 1/* SPDX-License-Identifier: GPL-2.0
 2 *
 3 * Common header for the legacy SH DMA driver and the new dmaengine driver
 4 *
 5 * extracted from arch/sh/include/asm/dma-sh.h:
 6 *
 7 * Copyright (C) 2000  Takashi YOSHII
 8 * Copyright (C) 2003  Paul Mundt
 9 */
10#ifndef DMA_REGISTER_H
11#define DMA_REGISTER_H
12
13/* DMA registers */
14#define SAR	0x00	/* Source Address Register */
15#define DAR	0x04	/* Destination Address Register */
16#define TCR	0x08	/* Transfer Count Register */
17#define CHCR	0x0C	/* Channel Control Register */
18#define DMAOR	0x40	/* DMA Operation Register */
19
20/* DMAOR definitions */
21#define DMAOR_AE	0x00000004	/* Address Error Flag */
22#define DMAOR_NMIF	0x00000002
23#define DMAOR_DME	0x00000001	/* DMA Master Enable */
24
25/* Definitions for the SuperH DMAC */
26#define REQ_L	0x00000000
27#define REQ_E	0x00080000
28#define RACK_H	0x00000000
29#define RACK_L	0x00040000
30#define ACK_R	0x00000000
31#define ACK_W	0x00020000
32#define ACK_H	0x00000000
33#define ACK_L	0x00010000
34#define DM_INC	0x00004000	/* Destination addresses are incremented */
35#define DM_DEC	0x00008000	/* Destination addresses are decremented */
36#define DM_FIX	0x0000c000	/* Destination address is fixed */
37#define SM_INC	0x00001000	/* Source addresses are incremented */
38#define SM_DEC	0x00002000	/* Source addresses are decremented */
39#define SM_FIX	0x00003000	/* Source address is fixed */
40#define RS_IN	0x00000200
41#define RS_OUT	0x00000300
42#define RS_AUTO	0x00000400	/* Auto Request */
43#define RS_ERS	0x00000800	/* DMA extended resource selector */
44#define TS_BLK	0x00000040
45#define TM_BUR	0x00000020
46#define CHCR_DE	0x00000001	/* DMA Enable */
47#define CHCR_TE	0x00000002	/* Transfer End Flag */
48#define CHCR_IE	0x00000004	/* Interrupt Enable */
49
50#endif