dma.c File Reference

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <asm/mach-jz4740/dma.h>
#include <asm/mach-jz4740/base.h>

Go to the source code of this file.

Data Structures
struct	jz4740_dma_chan

Macros
#define	JZ_REG_DMA_SRC_ADDR(x)   (0x00 + (x) * 0x20)
#define	JZ_REG_DMA_DST_ADDR(x)   (0x04 + (x) * 0x20)
#define	JZ_REG_DMA_TRANSFER_COUNT(x)   (0x08 + (x) * 0x20)
#define	JZ_REG_DMA_REQ_TYPE(x)   (0x0C + (x) * 0x20)
#define	JZ_REG_DMA_STATUS_CTRL(x)   (0x10 + (x) * 0x20)
#define	JZ_REG_DMA_CMD(x)   (0x14 + (x) * 0x20)
#define	JZ_REG_DMA_DESC_ADDR(x)   (0x18 + (x) * 0x20)
#define	JZ_REG_DMA_CTRL   0x300
#define	JZ_REG_DMA_IRQ   0x304
#define	JZ_REG_DMA_DOORBELL   0x308
#define	JZ_REG_DMA_DOORBELL_SET   0x30C
#define	JZ_DMA_STATUS_CTRL_NO_DESC   BIT(31)
#define	JZ_DMA_STATUS_CTRL_DESC_INV   BIT(6)
#define	JZ_DMA_STATUS_CTRL_ADDR_ERR   BIT(4)
#define	JZ_DMA_STATUS_CTRL_TRANSFER_DONE   BIT(3)
#define	JZ_DMA_STATUS_CTRL_HALT   BIT(2)
#define	JZ_DMA_STATUS_CTRL_COUNT_TERMINATE   BIT(1)
#define	JZ_DMA_STATUS_CTRL_ENABLE   BIT(0)
#define	JZ_DMA_CMD_SRC_INC   BIT(23)
#define	JZ_DMA_CMD_DST_INC   BIT(22)
#define	JZ_DMA_CMD_RDIL_MASK   (0xf << 16)
#define	JZ_DMA_CMD_SRC_WIDTH_MASK   (0x3 << 14)
#define	JZ_DMA_CMD_DST_WIDTH_MASK   (0x3 << 12)
#define	JZ_DMA_CMD_INTERVAL_LENGTH_MASK   (0x7 << 8)
#define	JZ_DMA_CMD_BLOCK_MODE   BIT(7)
#define	JZ_DMA_CMD_DESC_VALID   BIT(4)
#define	JZ_DMA_CMD_DESC_VALID_MODE   BIT(3)
#define	JZ_DMA_CMD_VALID_IRQ_ENABLE   BIT(2)
#define	JZ_DMA_CMD_TRANSFER_IRQ_ENABLE   BIT(1)
#define	JZ_DMA_CMD_LINK_ENABLE   BIT(0)
#define	JZ_DMA_CMD_FLAGS_OFFSET   22
#define	JZ_DMA_CMD_RDIL_OFFSET   16
#define	JZ_DMA_CMD_SRC_WIDTH_OFFSET   14
#define	JZ_DMA_CMD_DST_WIDTH_OFFSET   12
#define	JZ_DMA_CMD_TRANSFER_SIZE_OFFSET   8
#define	JZ_DMA_CMD_MODE_OFFSET   7
#define	JZ_DMA_CTRL_PRIORITY_MASK   (0x3 << 8)
#define	JZ_DMA_CTRL_HALT   BIT(3)
#define	JZ_DMA_CTRL_ADDRESS_ERROR   BIT(2)
#define	JZ_DMA_CTRL_ENABLE   BIT(0)
#define	JZ4740_DMA_CHANNEL(_id)   { .id = _id }

Functions
struct jz4740_dma_chan *	jz4740_dma_request (void *dev, const char *name)
	EXPORT_SYMBOL_GPL (jz4740_dma_request)
void	jz4740_dma_configure (struct jz4740_dma_chan *dma, const struct jz4740_dma_config *config)
	EXPORT_SYMBOL_GPL (jz4740_dma_configure)
void	jz4740_dma_set_src_addr (struct jz4740_dma_chan *dma, dma_addr_t src)
	EXPORT_SYMBOL_GPL (jz4740_dma_set_src_addr)
void	jz4740_dma_set_dst_addr (struct jz4740_dma_chan *dma, dma_addr_t dst)
	EXPORT_SYMBOL_GPL (jz4740_dma_set_dst_addr)
void	jz4740_dma_set_transfer_count (struct jz4740_dma_chan *dma, uint32_t count)
	EXPORT_SYMBOL_GPL (jz4740_dma_set_transfer_count)
void	jz4740_dma_set_complete_cb (struct jz4740_dma_chan *dma, jz4740_dma_complete_callback_t cb)
	EXPORT_SYMBOL_GPL (jz4740_dma_set_complete_cb)
void	jz4740_dma_free (struct jz4740_dma_chan *dma)
	EXPORT_SYMBOL_GPL (jz4740_dma_free)
void	jz4740_dma_enable (struct jz4740_dma_chan *dma)
	EXPORT_SYMBOL_GPL (jz4740_dma_enable)
void	jz4740_dma_disable (struct jz4740_dma_chan *dma)
	EXPORT_SYMBOL_GPL (jz4740_dma_disable)
uint32_t	jz4740_dma_get_residue (const struct jz4740_dma_chan *dma)
	EXPORT_SYMBOL_GPL (jz4740_dma_get_residue)
	arch_initcall (jz4740_dma_init)

Variables
struct jz4740_dma_chan	jz4740_dma_channels []

Macro Definition Documentation

#define JZ4740_DMA_CHANNEL

(

_id

)

{ .id = _id }

Definition at line 107 of file dma.c.

#define JZ_DMA_CMD_BLOCK_MODE   BIT(7)

Definition at line 52 of file dma.c.

#define JZ_DMA_CMD_DESC_VALID   BIT(4)

Definition at line 53 of file dma.c.

#define JZ_DMA_CMD_DESC_VALID_MODE   BIT(3)

Definition at line 54 of file dma.c.

#define JZ_DMA_CMD_DST_INC   BIT(22)

Definition at line 47 of file dma.c.

#define JZ_DMA_CMD_DST_WIDTH_MASK   (0x3 << 12)

Definition at line 50 of file dma.c.

#define JZ_DMA_CMD_DST_WIDTH_OFFSET   12

Definition at line 62 of file dma.c.

#define JZ_DMA_CMD_FLAGS_OFFSET   22

Definition at line 59 of file dma.c.

#define JZ_DMA_CMD_INTERVAL_LENGTH_MASK   (0x7 << 8)

Definition at line 51 of file dma.c.

#define JZ_DMA_CMD_LINK_ENABLE   BIT(0)

Definition at line 57 of file dma.c.

#define JZ_DMA_CMD_MODE_OFFSET   7

Definition at line 64 of file dma.c.

#define JZ_DMA_CMD_RDIL_MASK   (0xf << 16)

Definition at line 48 of file dma.c.

#define JZ_DMA_CMD_RDIL_OFFSET   16

Definition at line 60 of file dma.c.

#define JZ_DMA_CMD_SRC_INC   BIT(23)

Definition at line 46 of file dma.c.

#define JZ_DMA_CMD_SRC_WIDTH_MASK   (0x3 << 14)

Definition at line 49 of file dma.c.

#define JZ_DMA_CMD_SRC_WIDTH_OFFSET   14

Definition at line 61 of file dma.c.

#define JZ_DMA_CMD_TRANSFER_IRQ_ENABLE   BIT(1)

Definition at line 56 of file dma.c.

#define JZ_DMA_CMD_TRANSFER_SIZE_OFFSET   8

Definition at line 63 of file dma.c.

#define JZ_DMA_CMD_VALID_IRQ_ENABLE   BIT(2)

Definition at line 55 of file dma.c.

#define JZ_DMA_CTRL_ADDRESS_ERROR   BIT(2)

Definition at line 68 of file dma.c.

#define JZ_DMA_CTRL_ENABLE   BIT(0)

Definition at line 69 of file dma.c.

#define JZ_DMA_CTRL_HALT   BIT(3)

Definition at line 67 of file dma.c.

#define JZ_DMA_CTRL_PRIORITY_MASK   (0x3 << 8)

Definition at line 66 of file dma.c.

#define JZ_DMA_STATUS_CTRL_ADDR_ERR   BIT(4)

Definition at line 40 of file dma.c.

#define JZ_DMA_STATUS_CTRL_COUNT_TERMINATE   BIT(1)

Definition at line 43 of file dma.c.

#define JZ_DMA_STATUS_CTRL_DESC_INV   BIT(6)

Definition at line 39 of file dma.c.

#define JZ_DMA_STATUS_CTRL_ENABLE   BIT(0)

Definition at line 44 of file dma.c.

#define JZ_DMA_STATUS_CTRL_HALT   BIT(2)

Definition at line 42 of file dma.c.

#define JZ_DMA_STATUS_CTRL_NO_DESC   BIT(31)

Definition at line 38 of file dma.c.

#define JZ_DMA_STATUS_CTRL_TRANSFER_DONE   BIT(3)

Definition at line 41 of file dma.c.

#define JZ_REG_DMA_CMD

(

x

)

(0x14 + (x) * 0x20)

Definition at line 30 of file dma.c.

#define JZ_REG_DMA_CTRL   0x300

Definition at line 33 of file dma.c.

#define JZ_REG_DMA_DESC_ADDR

(

x

)

(0x18 + (x) * 0x20)

Definition at line 31 of file dma.c.

#define JZ_REG_DMA_DOORBELL   0x308

Definition at line 35 of file dma.c.

#define JZ_REG_DMA_DOORBELL_SET   0x30C

Definition at line 36 of file dma.c.

#define JZ_REG_DMA_DST_ADDR

(

x

)

(0x04 + (x) * 0x20)

Definition at line 26 of file dma.c.

#define JZ_REG_DMA_IRQ   0x304

Definition at line 34 of file dma.c.

#define JZ_REG_DMA_REQ_TYPE

(

x

)

(0x0C + (x) * 0x20)

Definition at line 28 of file dma.c.

#define JZ_REG_DMA_SRC_ADDR

(

x

)

(0x00 + (x) * 0x20)

Definition at line 25 of file dma.c.

#define JZ_REG_DMA_STATUS_CTRL

(

x

)

(0x10 + (x) * 0x20)

Definition at line 29 of file dma.c.

#define JZ_REG_DMA_TRANSFER_COUNT

(

x

)

(0x08 + (x) * 0x20)

Definition at line 27 of file dma.c.

Function Documentation

arch_initcall

(

jz4740_dma_init

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_request

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_configure

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_set_src_addr

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_set_dst_addr

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_set_transfer_count

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_set_complete_cb

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_free

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_enable

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_disable

)

EXPORT_SYMBOL_GPL

(

jz4740_dma_get_residue

)

void jz4740_dma_configure	(	struct jz4740_dma_chan *	dma,
		const struct jz4740_dma_config *	config
	)

Definition at line 145 of file dma.c.

void jz4740_dma_disable

(

struct jz4740_dma_chan *

dma

)

Definition at line 228 of file dma.c.

void jz4740_dma_enable

(

struct jz4740_dma_chan *

dma

)

Definition at line 215 of file dma.c.

void jz4740_dma_free

(

struct jz4740_dma_chan *

dma

)

Definition at line 207 of file dma.c.

uint32_t jz4740_dma_get_residue

(

const struct jz4740_dma_chan *

dma

)

Definition at line 235 of file dma.c.

struct jz4740_dma_chan* jz4740_dma_request ( void *  dev, const char *  name  )

read

Definition at line 118 of file dma.c.

void jz4740_dma_set_complete_cb	(	struct jz4740_dma_chan *	dma,
		jz4740_dma_complete_callback_t	cb
	)

Definition at line 200 of file dma.c.

void jz4740_dma_set_dst_addr	(	struct jz4740_dma_chan *	dma,
		dma_addr_t	dst
	)

Definition at line 187 of file dma.c.

void jz4740_dma_set_src_addr	(	struct jz4740_dma_chan *	dma,
		dma_addr_t	src
	)

Definition at line 181 of file dma.c.

void jz4740_dma_set_transfer_count	(	struct jz4740_dma_chan *	dma,
		uint32_t	count
	)

Definition at line 193 of file dma.c.

Variable Documentation

struct jz4740_dma_chan jz4740_dma_channels[]

Initial value:

= {
    JZ4740_DMA_CHANNEL(0),
    JZ4740_DMA_CHANNEL(1),
    JZ4740_DMA_CHANNEL(2),
    JZ4740_DMA_CHANNEL(3),
    JZ4740_DMA_CHANNEL(4),
    JZ4740_DMA_CHANNEL(5),
}

Definition at line 109 of file dma.c.