2 * linux/include/asm-arm/arch-pnx4008/dma.h
4 * PNX4008 DMA header file
7 * Copyright: MontaVista Software Inc. (c) 2005
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.
14 #ifndef __ASM_ARCH_DMA_H
15 #define __ASM_ARCH_DMA_H
19 #define MAX_DMA_ADDRESS 0xffffffff
21 #define MAX_DMA_CHANNELS 8
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)
61 DMA_BUFFER_ALLOCATED = 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,
73 PER_HS_UART_2_XMIT = 7,
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,
81 PER_PRNG_OUTFIFO = 15,
84 struct pnx4008_dma_ch_ctrl {
100 struct pnx4008_dma_ch_config {
111 struct pnx4008_dma_ll {
112 unsigned long src_addr;
113 unsigned long dest_addr;
115 unsigned long ch_ctrl;
116 struct pnx4008_dma_ll *next;
119 int (*free) (void *);
122 struct pnx4008_dma_config {
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;
132 int (*free) (void *);
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 *);
139 extern int pnx4008_request_channel(char *, int,
140 void (*)(int, int, 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 *,
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 *,
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 *);
162 #endif /* _ASM_ARCH_DMA_H */