dma.c File Reference

#include <linux/module.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <asm/dma.h>
#include <asm/gpio-regs.h>
#include <asm/irc-regs.h>
#include <asm/cpu-irqs.h>

Go to the source code of this file.

Data Structures
struct	frv_dma_channel

Macros
#define	FRV_DMA_FLAGS_RESERVED   0x01
#define	FRV_DMA_FLAGS_INUSE   0x02
#define	FRV_DMA_FLAGS_PAUSED   0x04
#define	__get_DMAC(IO, X)   ({ *(volatile unsigned long *)((IO) + DMAC_##X##x); })
#define	__set_DMAC(IO, X, V)
#define	___set_DMAC(IO, X, V)
#define	frv_clear_dma_inprogress(channel)   atomic_clear_mask(1 << (channel), &frv_dma_inprogress);
#define	frv_set_dma_inprogress(channel)   atomic_set_mask(1 << (channel), &frv_dma_inprogress);

Functions
void __init	frv_dma_init (void)
int	frv_dma_open (const char *devname, unsigned long dmamask, int dmacap, dma_irq_handler_t handler, unsigned long irq_flags, void *data)
	EXPORT_SYMBOL (frv_dma_open)
void	frv_dma_close (int dma)
	EXPORT_SYMBOL (frv_dma_close)
void	frv_dma_config (int dma, unsigned long ccfr, unsigned long cctr, unsigned long apr)
	EXPORT_SYMBOL (frv_dma_config)
void	frv_dma_start (int dma, unsigned long sba, unsigned long dba, unsigned long pix, unsigned long six, unsigned long bcl)
	EXPORT_SYMBOL (frv_dma_start)
void	frv_dma_restart_circular (int dma, unsigned long six)
	EXPORT_SYMBOL (frv_dma_restart_circular)
void	frv_dma_stop (int dma)
	EXPORT_SYMBOL (frv_dma_stop)
int	is_frv_dma_interrupting (int dma)
	EXPORT_SYMBOL (is_frv_dma_interrupting)
void	frv_dma_dump (int dma)
	EXPORT_SYMBOL (frv_dma_dump)
void	frv_dma_pause_all (void)
	EXPORT_SYMBOL (frv_dma_pause_all)
void	frv_dma_resume_all (void)
	EXPORT_SYMBOL (frv_dma_resume_all)
void	frv_dma_status_clear (int dma)
	EXPORT_SYMBOL (frv_dma_status_clear)

Variables
unsigned long	frv_dma_inprogress

Macro Definition Documentation

#define ___set_DMAC	(		IO,
			X,
			V
	)

Value:

do {                                \
    *(volatile unsigned long *)((IO) + DMAC_##X##x) = (V);  \
} while(0)

Definition at line 47 of file dma.c.

#define __get_DMAC	(		IO,
			X
	)		({ *(volatile unsigned long *)((IO) + DMAC_##X##x); })

Definition at line 39 of file dma.c.

#define __set_DMAC	(		IO,
			X,
			V
	)

Value:

do {                                \
    *(volatile unsigned long *)((IO) + DMAC_##X##x) = (V);  \
    mb();                           \
} while(0)

Definition at line 41 of file dma.c.

#define frv_clear_dma_inprogress

(

channel

)

atomic_clear_mask(1 << (channel), &frv_dma_inprogress);

Definition at line 114 of file dma.c.

#define FRV_DMA_FLAGS_INUSE   0x02

Definition at line 25 of file dma.c.

#define FRV_DMA_FLAGS_PAUSED   0x04

Definition at line 26 of file dma.c.

#define FRV_DMA_FLAGS_RESERVED   0x01

Definition at line 24 of file dma.c.

#define frv_set_dma_inprogress

(

channel

)

atomic_set_mask(1 << (channel), &frv_dma_inprogress);

Definition at line 117 of file dma.c.

Function Documentation

EXPORT_SYMBOL

(

frv_dma_open

)

EXPORT_SYMBOL

(

frv_dma_close

)

EXPORT_SYMBOL

(

frv_dma_config

)

EXPORT_SYMBOL

(

frv_dma_start

)

EXPORT_SYMBOL

(

frv_dma_restart_circular

)

EXPORT_SYMBOL

(

frv_dma_stop

)

EXPORT_SYMBOL

(

is_frv_dma_interrupting

)

EXPORT_SYMBOL

(

frv_dma_dump

)

EXPORT_SYMBOL

(

frv_dma_pause_all

)

EXPORT_SYMBOL

(

frv_dma_resume_all

)

EXPORT_SYMBOL

(

frv_dma_status_clear

)

void frv_dma_close

(

int

dma

)

Definition at line 239 of file dma.c.

void frv_dma_config	(	int	dma,
		unsigned long	ccfr,
		unsigned long	cctr,
		unsigned long	apr
	)

Definition at line 260 of file dma.c.

void frv_dma_dump

(

int

dma

)

Definition at line 355 of file dma.c.

void __init frv_dma_init

(

void

)

Definition at line 139 of file dma.c.

int frv_dma_open	(	const char *	devname,
		unsigned long	dmamask,
		int	dmacap,
		dma_irq_handler_t	handler,
		unsigned long	irq_flags,
		void *	data
	)

Definition at line 169 of file dma.c.

void frv_dma_pause_all

(

void

)

Definition at line 377 of file dma.c.

void frv_dma_restart_circular	(	int	dma,
		unsigned long	six
	)

Definition at line 302 of file dma.c.

void frv_dma_resume_all

(

void

)

Definition at line 418 of file dma.c.

void frv_dma_start	(	int	dma,
		unsigned long	sba,
		unsigned long	dba,
		unsigned long	pix,
		unsigned long	six,
		unsigned long	bcl
	)

Definition at line 277 of file dma.c.

void frv_dma_status_clear

(

int

dma

)

Definition at line 454 of file dma.c.

void frv_dma_stop

(

int

dma

)

Definition at line 321 of file dma.c.

int is_frv_dma_interrupting

(

int

dma

)

Definition at line 341 of file dma.c.

Variable Documentation

unsigned long frv_dma_inprogress

Definition at line 112 of file dma.c.