Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
[linux-2.6] / include / asm-arm / arch-pnx4008 / dma.h
1 /*
2  *  linux/include/asm-arm/arch-pnx4008/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_ADDRESS         0xffffffff
20
21 #define MAX_DMA_CHANNELS        8
22
23 #define DMAC_BASE               IO_ADDRESS(PNX4008_DMA_CONFIG_BASE)
24 #define DMAC_INT_STAT           (DMAC_BASE + 0x0000)
25 #define DMAC_INT_TC_STAT        (DMAC_BASE + 0x0004)
26 #define DMAC_INT_TC_CLEAR       (DMAC_BASE + 0x0008)
27 #define DMAC_INT_ERR_STAT       (DMAC_BASE + 0x000c)
28 #define DMAC_INT_ERR_CLEAR      (DMAC_BASE + 0x0010)
29 #define DMAC_SOFT_SREQ          (DMAC_BASE + 0x0024)
30 #define DMAC_CONFIG             (DMAC_BASE + 0x0030)
31 #define DMAC_Cx_SRC_ADDR(c)     (DMAC_BASE + 0x0100 + (c) * 0x20)
32 #define DMAC_Cx_DEST_ADDR(c)    (DMAC_BASE + 0x0104 + (c) * 0x20)
33 #define DMAC_Cx_LLI(c)          (DMAC_BASE + 0x0108 + (c) * 0x20)
34 #define DMAC_Cx_CONTROL(c)      (DMAC_BASE + 0x010c + (c) * 0x20)
35 #define DMAC_Cx_CONFIG(c)       (DMAC_BASE + 0x0110 + (c) * 0x20)
36
37 enum {
38         WIDTH_BYTE = 0,
39         WIDTH_HWORD,
40         WIDTH_WORD
41 };
42
43 enum {
44         FC_MEM2MEM_DMA,
45         FC_MEM2PER_DMA,
46         FC_PER2MEM_DMA,
47         FC_PER2PER_DMA,
48         FC_PER2PER_DPER,
49         FC_MEM2PER_PER,
50         FC_PER2MEM_PER,
51         FC_PER2PER_SPER
52 };
53
54 enum {
55         DMA_INT_UNKNOWN = 0,
56         DMA_ERR_INT = 1,
57         DMA_TC_INT = 2,
58 };
59
60 enum {
61         DMA_BUFFER_ALLOCATED = 1,
62         DMA_HAS_LL = 2,
63 };
64
65 enum {
66         PER_CAM_DMA_1 = 0,
67         PER_NDF_FLASH = 1,
68         PER_MBX_SLAVE_FIFO = 2,
69         PER_SPI2_REC_XMIT = 3,
70         PER_MS_SD_RX_XMIT = 4,
71         PER_HS_UART_1_XMIT = 5,
72         PER_HS_UART_1_RX = 6,
73         PER_HS_UART_2_XMIT = 7,
74         PER_HS_UART_2_RX = 8,
75         PER_HS_UART_7_XMIT = 9,
76         PER_HS_UART_7_RX = 10,
77         PER_SPI1_REC_XMIT = 11,
78         PER_MLC_NDF_SREC = 12,
79         PER_CAM_DMA_2 = 13,
80         PER_PRNG_INFIFO = 14,
81         PER_PRNG_OUTFIFO = 15,
82 };
83
84 struct pnx4008_dma_ch_ctrl {
85         int tc_mask;
86         int cacheable;
87         int bufferable;
88         int priv_mode;
89         int di;
90         int si;
91         int dest_ahb1;
92         int src_ahb1;
93         int dwidth;
94         int swidth;
95         int dbsize;
96         int sbsize;
97         int tr_size;
98 };
99
100 struct pnx4008_dma_ch_config {
101         int halt;
102         int active;
103         int lock;
104         int itc;
105         int ie;
106         int flow_cntrl;
107         int dest_per;
108         int src_per;
109 };
110
111 struct pnx4008_dma_ll {
112         unsigned long src_addr;
113         unsigned long dest_addr;
114         u32 next_dma;
115         unsigned long ch_ctrl;
116         struct pnx4008_dma_ll *next;
117         int flags;
118         void *alloc_data;
119         int (*free) (void *);
120 };
121
122 struct pnx4008_dma_config {
123         int is_ll;
124         unsigned long src_addr;
125         unsigned long dest_addr;
126         unsigned long ch_ctrl;
127         unsigned long ch_cfg;
128         struct pnx4008_dma_ll *ll;
129         u32 ll_dma;
130         int flags;
131         void *alloc_data;
132         int (*free) (void *);
133 };
134
135 extern struct pnx4008_dma_ll *pnx4008_alloc_ll_entry(dma_addr_t *);
136 extern void pnx4008_free_ll_entry(struct pnx4008_dma_ll *, dma_addr_t);
137 extern void pnx4008_free_ll(u32 ll_dma, struct pnx4008_dma_ll *);
138
139 extern int pnx4008_request_channel(char *, int,
140                                    void (*)(int, int, void *),
141                                    void *);
142 extern void pnx4008_free_channel(int);
143 extern int pnx4008_config_dma(int, int, int);
144 extern int pnx4008_dma_pack_control(const struct pnx4008_dma_ch_ctrl *,
145                                     unsigned long *);
146 extern int pnx4008_dma_parse_control(unsigned long,
147                                      struct pnx4008_dma_ch_ctrl *);
148 extern int pnx4008_dma_pack_config(const struct pnx4008_dma_ch_config *,
149                                    unsigned long *);
150 extern int pnx4008_dma_parse_config(unsigned long,
151                                     struct pnx4008_dma_ch_config *);
152 extern int pnx4008_config_channel(int, struct pnx4008_dma_config *);
153 extern int pnx4008_channel_get_config(int, struct pnx4008_dma_config *);
154 extern int pnx4008_dma_ch_enable(int);
155 extern int pnx4008_dma_ch_disable(int);
156 extern int pnx4008_dma_ch_enabled(int);
157 extern void pnx4008_dma_split_head_entry(struct pnx4008_dma_config *,
158                                          struct pnx4008_dma_ch_ctrl *);
159 extern void pnx4008_dma_split_ll_entry(struct pnx4008_dma_ll *,
160                                        struct pnx4008_dma_ch_ctrl *);
161
162 #endif                          /* _ASM_ARCH_DMA_H */