2 * Header for the new SH dmaengine driver
4 * Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
13 #include <linux/list.h>
14 #include <linux/dmaengine.h>
16 /* Used by slave DMA clients to request DMA to/from a specific peripheral */
17 struct sh_dmae_slave {
18 unsigned int slave_id; /* Set by the platform */
19 struct device *dma_dev; /* Set by the platform */
20 const struct sh_dmae_slave_config *config; /* Set by the driver */
24 u32 sar; /* SAR / source address */
25 u32 dar; /* DAR / destination address */
26 u32 tcr; /* TCR / transfer count */
30 struct sh_dmae_regs hw;
31 struct list_head node;
32 struct dma_async_tx_descriptor async_tx;
33 enum dma_data_direction direction;
40 struct sh_dmae_slave_config {
41 unsigned int slave_id;
47 struct sh_dmae_channel {
50 unsigned int dmars_bit;
53 struct sh_dmae_pdata {
54 const struct sh_dmae_slave_config *slave;
56 const struct sh_dmae_channel *channel;
58 unsigned int ts_low_shift;
59 unsigned int ts_low_mask;
60 unsigned int ts_high_shift;
61 unsigned int ts_high_mask;
62 const unsigned int *ts_shift;
65 unsigned int chcr_offset;
68 unsigned int dmaor_is_32bit:1;
69 unsigned int needs_tend_set:1;
70 unsigned int no_dmars:1;
80 #define TEND 0x18 /* USB-DMAC */
82 /* DMAOR definitions */
83 #define DMAOR_AE 0x00000004
84 #define DMAOR_NMIF 0x00000002
85 #define DMAOR_DME 0x00000001
87 /* Definitions for the SuperH DMAC */
88 #define REQ_L 0x00000000
89 #define REQ_E 0x00080000
90 #define RACK_H 0x00000000
91 #define RACK_L 0x00040000
92 #define ACK_R 0x00000000
93 #define ACK_W 0x00020000
94 #define ACK_H 0x00000000
95 #define ACK_L 0x00010000
96 #define DM_INC 0x00004000
97 #define DM_DEC 0x00008000
98 #define DM_FIX 0x0000c000
99 #define SM_INC 0x00001000
100 #define SM_DEC 0x00002000
101 #define SM_FIX 0x00003000
102 #define RS_IN 0x00000200
103 #define RS_OUT 0x00000300
104 #define TS_BLK 0x00000040
105 #define TM_BUR 0x00000020
106 #define CHCR_DE 0x00000001
107 #define CHCR_TE 0x00000002
108 #define CHCR_IE 0x00000004