1/*
2 *  arch/arm/mach-pnx4008/include/mach/dma.h
3 *
4 *  PNX4008 DMA header file
5 *
6 *  Author:	Vitaly Wool
7 *  Copyright:	MontaVista Software Inc. (c) 2005
8 *
9 *  This program is free software; you can redistribute it and/or modify
10 *  it under the terms of the GNU General Public License version 2 as
11 *  published by the Free Software Foundation.
12 */
13
14#ifndef __ASM_ARCH_DMA_H
15#define __ASM_ARCH_DMA_H
16
17#include "platform.h"
18
19#define MAX_DMA_CHANNELS	8
20
21#define DMAC_BASE		IO_ADDRESS(PNX4008_DMA_CONFIG_BASE)
22#define DMAC_INT_STAT		(DMAC_BASE + 0x0000)
23#define DMAC_INT_TC_STAT	(DMAC_BASE + 0x0004)
24#define DMAC_INT_TC_CLEAR	(DMAC_BASE + 0x0008)
25#define DMAC_INT_ERR_STAT	(DMAC_BASE + 0x000c)
26#define DMAC_INT_ERR_CLEAR	(DMAC_BASE + 0x0010)
27#define DMAC_SOFT_SREQ		(DMAC_BASE + 0x0024)
28#define DMAC_CONFIG		(DMAC_BASE + 0x0030)
29#define DMAC_Cx_SRC_ADDR(c)	(DMAC_BASE + 0x0100 + (c) * 0x20)
30#define DMAC_Cx_DEST_ADDR(c)	(DMAC_BASE + 0x0104 + (c) * 0x20)
31#define DMAC_Cx_LLI(c)		(DMAC_BASE + 0x0108 + (c) * 0x20)
32#define DMAC_Cx_CONTROL(c)	(DMAC_BASE + 0x010c + (c) * 0x20)
33#define DMAC_Cx_CONFIG(c)	(DMAC_BASE + 0x0110 + (c) * 0x20)
34
35enum {
36	WIDTH_BYTE = 0,
37	WIDTH_HWORD,
38	WIDTH_WORD
39};
40
41enum {
42	FC_MEM2MEM_DMA,
43	FC_MEM2PER_DMA,
44	FC_PER2MEM_DMA,
45	FC_PER2PER_DMA,
46	FC_PER2PER_DPER,
47	FC_MEM2PER_PER,
48	FC_PER2MEM_PER,
49	FC_PER2PER_SPER
50};
51
52enum {
53	DMA_INT_UNKNOWN = 0,
54	DMA_ERR_INT = 1,
55	DMA_TC_INT = 2,
56};
57
58enum {
59	DMA_BUFFER_ALLOCATED = 1,
60	DMA_HAS_LL = 2,
61};
62
63enum {
64	PER_CAM_DMA_1 = 0,
65	PER_NDF_FLASH = 1,
66	PER_MBX_SLAVE_FIFO = 2,
67	PER_SPI2_REC_XMIT = 3,
68	PER_MS_SD_RX_XMIT = 4,
69	PER_HS_UART_1_XMIT = 5,
70	PER_HS_UART_1_RX = 6,
71	PER_HS_UART_2_XMIT = 7,
72	PER_HS_UART_2_RX = 8,
73	PER_HS_UART_7_XMIT = 9,
74	PER_HS_UART_7_RX = 10,
75	PER_SPI1_REC_XMIT = 11,
76	PER_MLC_NDF_SREC = 12,
77	PER_CAM_DMA_2 = 13,
78	PER_PRNG_INFIFO = 14,
79	PER_PRNG_OUTFIFO = 15,
80};
81
82struct pnx4008_dma_ch_ctrl {
83	int tc_mask;
84	int cacheable;
85	int bufferable;
86	int priv_mode;
87	int di;
88	int si;
89	int dest_ahb1;
90	int src_ahb1;
91	int dwidth;
92	int swidth;
93	int dbsize;
94	int sbsize;
95	int tr_size;
96};
97
98struct pnx4008_dma_ch_config {
99	int halt;
100	int active;
101	int lock;
102	int itc;
103	int ie;
104	int flow_cntrl;
105	int dest_per;
106	int src_per;
107};
108
109struct pnx4008_dma_ll {
110	unsigned long src_addr;
111	unsigned long dest_addr;
112	u32 next_dma;
113	unsigned long ch_ctrl;
114	struct pnx4008_dma_ll *next;
115	int flags;
116	void *alloc_data;
117	int (*free) (void *);
118};
119
120struct pnx4008_dma_config {
121	int is_ll;
122	unsigned long src_addr;
123	unsigned long dest_addr;
124	unsigned long ch_ctrl;
125	unsigned long ch_cfg;
126	struct pnx4008_dma_ll *ll;
127	u32 ll_dma;
128	int flags;
129	void *alloc_data;
130	int (*free) (void *);
131};
132
133extern struct pnx4008_dma_ll *pnx4008_alloc_ll_entry(dma_addr_t *);
134extern void pnx4008_free_ll_entry(struct pnx4008_dma_ll *, dma_addr_t);
135extern void pnx4008_free_ll(u32 ll_dma, struct pnx4008_dma_ll *);
136
137extern int pnx4008_request_channel(char *, int,
138				   void (*)(int, int, void *),
139				   void *);
140extern void pnx4008_free_channel(int);
141extern int pnx4008_config_dma(int, int, int);
142extern int pnx4008_dma_pack_control(const struct pnx4008_dma_ch_ctrl *,
143				    unsigned long *);
144extern int pnx4008_dma_parse_control(unsigned long,
145				     struct pnx4008_dma_ch_ctrl *);
146extern int pnx4008_dma_pack_config(const struct pnx4008_dma_ch_config *,
147				   unsigned long *);
148extern int pnx4008_dma_parse_config(unsigned long,
149				    struct pnx4008_dma_ch_config *);
150extern int pnx4008_config_channel(int, struct pnx4008_dma_config *);
151extern int pnx4008_channel_get_config(int, struct pnx4008_dma_config *);
152extern int pnx4008_dma_ch_enable(int);
153extern int pnx4008_dma_ch_disable(int);
154extern int pnx4008_dma_ch_enabled(int);
155extern void pnx4008_dma_split_head_entry(struct pnx4008_dma_config *,
156					 struct pnx4008_dma_ch_ctrl *);
157extern void pnx4008_dma_split_ll_entry(struct pnx4008_dma_ll *,
158				       struct pnx4008_dma_ch_ctrl *);
159
160#endif				/* _ASM_ARCH_DMA_H */
161