/arch/arm/mach-pnx4008/include/mach/dma.h

  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 */