/*
* linux/include/asm-arm/arch-pnx4008/dma.h
*
* PNX4008 DMA header file
*
* Author: Vitaly Wool
* Copyright: MontaVista Software Inc. (c) 2005
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H
#include "platform.h"
#define MAX_DMA_ADDRESS 0xffffffff
#define MAX_DMA_CHANNELS 8
#define DMAC_BASE IO_ADDRESS(PNX4008_DMA_CONFIG_BASE)
#define DMAC_INT_STAT (DMAC_BASE + 0x0000)
#define DMAC_INT_TC_STAT (DMAC_BASE + 0x0004)
#define DMAC_INT_TC_CLEAR (DMAC_BASE + 0x0008)
#define DMAC_INT_ERR_STAT (DMAC_BASE + 0x000c)
#define DMAC_INT_ERR_CLEAR (DMAC_BASE + 0x0010)
#define DMAC_SOFT_SREQ (DMAC_BASE + 0x0024)
#define DMAC_CONFIG (DMAC_BASE + 0x0030)
#define DMAC_Cx_SRC_ADDR(c) (DMAC_BASE + 0x0100 + (c) * 0x20)
#define DMAC_Cx_DEST_ADDR(c) (DMAC_BASE + 0x0104 + (c) * 0x20)
#define DMAC_Cx_LLI(c) (DMAC_BASE + 0x0108 + (c) * 0x20)
#define DMAC_Cx_CONTROL(c) (DMAC_BASE + 0x010c + (c) * 0x20)
#define DMAC_Cx_CONFIG(c) (DMAC_BASE + 0x0110 + (c) * 0x20)
enum {
WIDTH_BYTE = 0,
WIDTH_HWORD,
WIDTH_WORD
};
enum {
FC_MEM2MEM_DMA,
FC_MEM2PER_DMA,
FC_PER2MEM_DMA,
FC_PER2PER_DMA,
FC_PER2PER_DPER,
FC_MEM2PER_PER,
FC_PER2MEM_PER,
FC_PER2PER_SPER
};
enum {
DMA_INT_UNKNOWN = 0,
DMA_ERR_INT = 1,
DMA_TC_INT = 2,
};
enum {
DMA_BUFFER_ALLOCATED = 1,
DMA_HAS_LL = 2,
};
enum {
PER_CAM_DMA_1 = 0,
PER_NDF_FLASH = 1,
PER_MBX_SLAVE_FIFO = 2,
PER_SPI2_REC_XMIT = 3,
PER_MS_SD_RX_XMIT = 4,
PER_HS_UART_1_XMIT = 5,
PER_HS_UART_1_RX = 6,
PER_HS_UART_2_XMIT = 7,
PER_HS_UART_2_RX = 8,
PER_HS_UART_7_XMIT = 9,
PER_HS_UART_7_RX = 10,
PER_SPI1_REC_XMIT = 11,
PER_MLC_NDF_SREC = 12,
PER_CAM_DMA_2 = 13,
PER_PRNG_INFIFO = 14,
PER_PRNG_OUTFIFO = 15,
};
struct pnx4008_dma_ch_ctrl {
int tc_mask;
int cacheable;
int bufferable;
int priv_mode;
int di;
int si;
int dest_ahb1;
int src_ahb1;
int dwidth;
int swidth;
int dbsize;
int sbsize;
int tr_size;
};
struct pnx4008_dma_ch_config {
int halt;
int active;
int lock;
int itc;
int ie;
int flow_cntrl;
int dest_per;
int src_per;
};
struct pnx4008_dma_ll {
unsigned long src_addr;
unsigned long dest_addr;
u32 next_dma;
unsigned long ch_ctrl;
struct pnx4008_dma_ll *next;
int flags;
void *alloc_data;
int (*free) (void *);
};
struct pnx4008_dma_config {
int is_ll;
unsigned long src_addr;
unsigned long dest_addr;
unsigned long ch_ctrl;
unsigned long ch_cfg;
struct pnx4008_dma_ll *ll;
u32 ll_dma;
int flags;
void *alloc_data;
int (*free) (void *);
};
extern struct pnx4008_dma_ll *pnx4008_alloc_ll_entry(dma_addr_t *);
extern void pnx4008_free_ll_entry(struct pnx4008_dma_ll *, dma_addr_t);
extern void pnx4008_free_ll(u32 ll_dma, struct pnx4008_dma_ll *);
extern int pnx4008_request_channel(char *, int,
void (*)(int, int, void *, struct pt_regs *),
void *);
extern void pnx4008_free_channel(int);
extern int pnx4008_config_dma(int, int, int);
extern int pnx4008_dma_pack_control(const struct pnx4008_dma_ch_ctrl *,
unsigned long *);
extern int pnx4008_dma_parse_control(unsigned long,
struct pnx4008_dma_ch_ctrl *);
extern int pnx4008_dma_pack_config(const struct pnx4008_dma_ch_config *,
unsigned long *);
extern int pnx4008_dma_parse_config(unsigned long,
struct pnx4008_dma_ch_config *);
extern int pnx4008_config_channel(int, struct pnx4008_dma_config *);
extern int pnx4008_channel_get_config(int, struct pnx4008_dma_config *);
extern int pnx4008_dma_ch_enable(int);
extern int pnx4008_dma_ch_disable(int);
extern int pnx4008_dma_ch_enabled(int);
extern void pnx4008_dma_split_head_entry(struct pnx4008_dma_config *,
struct pnx4008_dma_ch_ctrl *);
extern void pnx4008_dma_split_ll_entry(struct pnx4008_dma_ll *,
struct pnx4008_dma_ch_ctrl *);
#endif /* _ASM_ARCH_DMA_H */
