#include <sys/types.h>
#include <stdio.h>
#include <stddef.h>
#include <port.h>
#include <dma.h>
#include <interrupt.h>
#include <list.h>

dma.c에 대한 include 의존 그래프

매크로
#define	DMA_DISABLE(ch)
	Disable selected DMA channel (ch) 더 자세히 ...

#define	DMA_ENABLE(ch)
	Enable selected DMA channel (ch) 더 자세히 ...

#define	DMA_RESET_PTR(ch)
	Reset type pointer of DMAC. 더 자세히 ...

#define	DMA_SET_PAGE(ch, addr)
	Address(32 Bits) can be devided into a page(64KB unit) and its offset. Update the buffer information to trnasfer data via the DMA. 더 자세히 ...

#define	DMA_SET_ADDRESS(ch, addr)

#define	DMA_SET_MODE(ch, mode)
	Update DMA mode, ch >> 2 ==> 0 : 8 Bits, 1 : 16 Bits. 더 자세히 ...

#define	DMA_SET_TX_SIZE(ch, cnt)
	of bytes to be transfered 더 자세히 ...

#define	DMA_CTRL_FROM_CH(ch) (((ch) >> 2) ? DMA_16BIT : DMA_8BIT)

함수
struct dma_ctrl_port_entry_t *	dma_get_ctrl_port (int type)
	type 에 해당하는 DMA 제어 포트 정보를 가져온다. 더 자세히 ...

struct dma_port_entry_t *	dma_get_port (int channel)
	channel 에 해당하는 port 를 가져온다. 더 자세히 ...

void	dma_init (int ch, int mode, unsigned long address, int count)
	DMA Controller 를 초기화 한다. 더 자세히 ...

int	dma_is_done (int ch)
	DMA 가 종료 되었는지 확인한다. 더 자세히 ...

매크로 문서화

#define DMA_CTRL_FROM_CH ( ch) (((ch) >> 2) ? DMA_16BIT : DMA_8BIT)

#define DMA_DISABLE ( ch)

값:

do { \
        outb(dma_ctrl[(ch)>>2].single_mask, DMA_MASK_DISABLE_CH|(ch)); \
} while (0)

Disable selected DMA channel (ch)

#define DMA_ENABLE ( ch)

값:

do { \
        outb(dma_ctrl[(ch)>>2].single_mask, (ch)); \
} while (0)

Enable selected DMA channel (ch)

#define DMA_RESET_PTR ( ch)

값:

do { \
        outb(dma_ctrl[(ch) >> 2].byte_ptr, 0x00); \
} while (0)

Reset type pointer of DMAC.

#define DMA_SET_ADDRESS	(	ch,
		addr
	)

값:

do { \
        outb(dma_port[ch].address, ((addr) & 0x000000FF)); \
        outb(dma_port[ch].address, ((addr) & 0x0000FF00) >> 8); \
} while (0)

#define DMA_SET_MODE	(	ch,
		mode
	)

값:

do { \
        outb(dma_ctrl[(ch)>>2].write_mode, (mode) | (ch)); \
} while (0)

Update DMA mode, ch >> 2 ==> 0 : 8 Bits, 1 : 16 Bits.

#define DMA_SET_PAGE	(	ch,
		addr
	)

값:

do { \
        outb(dma_port[ch].page, (((addr) & 0x00FF0000) >> 16)); \
} while (0)

Address(32 Bits) can be devided into a page(64KB unit) and its offset. Update the buffer information to trnasfer data via the DMA.

#define DMA_SET_TX_SIZE	(	ch,
		cnt
	)

값:

do { \
        outb(dma_port[ch].count, ((unsigned short)(cnt) & 0x00FF)); \
        outb(dma_port[ch].count, ((unsigned short)(cnt) & 0xFF00) >> 8); \
} while (0)

매크로

of bytes to be transfered

함수

매크로 문서화

of bytes to be transfered