ref/dma_8h_source.html

#ifndef __LIBDRAGON_DMA_H

#define __LIBDRAGON_DMA_H


#include <stdbool.h>

#include <stdint.h>


#ifdef __cplusplus

extern "C" {

#endif


#define PI_DRAM_ADDR    ((volatile uint32_t*)0xA4600000)

#define PI_CART_ADDR    ((volatile uint32_t*)0xA4600004)

#define PI_RD_LEN       ((volatile uint32_t*)0xA4600008)

#define PI_WR_LEN       ((volatile uint32_t*)0xA460000C)

#define PI_STATUS       ((volatile uint32_t*)0xA4600010)


void dma_write_raw_async(const void *ram_address, unsigned long pi_address, unsigned long len);


void dma_write(const void * ram_address, unsigned long pi_address, unsigned long len);


void dma_read_raw_async(void *ram_address, unsigned long pi_address, unsigned long len);


void dma_read_async(void *ram_address, unsigned long pi_address, unsigned long len);


void dma_read(void * ram_address, unsigned long pi_address, unsigned long len);


void dma_wait(void);


uint32_t io_read(uint32_t pi_address);


void io_write(uint32_t pi_address, uint32_t data);


bool io_accessible(uint32_t pi_address);


__attribute__((deprecated("use dma_wait instead")))

volatile int dma_busy(void);


#ifdef __cplusplus

}

#endif


 /* dma */

#endif

dma_write
void dma_write(const void *ram_address, unsigned long pi_address, unsigned long len)
Write to a peripheral.
Definition dma.c:223

dma_write_raw_async
void dma_write_raw_async(const void *ram_address, unsigned long pi_address, unsigned long len)
Start writing data to a peripheral through PI DMA (low-level)
Definition dma.c:84

io_read
uint32_t io_read(uint32_t pi_address)
Read a 32 bit integer from a peripheral using the CPU.
Definition dma.c:230

dma_read
void dma_read(void *ram_address, unsigned long pi_address, unsigned long len)
Read data from a peripheral through PI DMA, waiting for completion.
Definition dma.c:216

io_accessible
bool io_accessible(uint32_t pi_address)
Check whether the specified PI address can be accessed doing I/O from CPU.
Definition dma.c:34

dma_read_async
void dma_read_async(void *ram_address, unsigned long pi_address, unsigned long len)
Start reading data from a peripheral through PI DMA.
Definition dma.c:148

dma_wait
void dma_wait(void)
Wait until an async DMA or I/O transfer is finished.
Definition dma.c:210

dma_busy
volatile int dma_busy(void)
Return whether the DMA controller is currently busy.
Definition dma.c:61

io_write
void io_write(uint32_t pi_address, uint32_t data)
Write a 32 bit integer to a peripheral using the CPU.
Definition dma.c:241

dma_read_raw_async
void dma_read_raw_async(void *ram_address, unsigned long pi_address, unsigned long len)
Start reading data from a peripheral through PI DMA (low-level)
Definition dma.c:66