dma_channel Struct Reference

#include <dma.h>

Data Fields
char *	name
pxa_dma_prio	prio
void(*	irq_handler )(int, void *)
void *	data
spinlock_t	lock
const char *	device_id
atomic_t	chan_status
struct dma_register *	regs
struct dmasg *	sg
unsigned int	irq
struct dma_reg	ch [DMA_CHAN_COUNT]
puv3_dma_prio	prio
void(*	err_handler )(int, void *)
void *	private_data
size_t	max_len
size_t	actual_len
enum dma_channel_status	status
bool	desired_mode

Detailed Description

struct dma_channel - A DMA channel. : channel-private data : the maximum number of bytes the channel can move in one transaction (typically representing many USB maximum-sized packets) : how many bytes have been transferred : current channel status (updated e.g. on interrupt) : true if mode 1 is desired; false if mode 0 is desired

channels are associated with an endpoint for the duration of at least one usb transfer.

Definition at line 31 of file dma.c.

Field Documentation

size_t actual_len

Definition at line 129 of file musb_dma.h.

struct dma_reg ch[DMA_CHAN_COUNT]

Definition at line 100 of file dma.h.

atomic_t chan_status

Definition at line 165 of file dma.h.

void * data

Definition at line 35 of file dma.c.

bool desired_mode

Definition at line 131 of file musb_dma.h.

const char* device_id

Definition at line 164 of file dma.h.

void(* err_handler)(int, void *)

Definition at line 29 of file dma.c.

unsigned int irq

Definition at line 168 of file dma.h.

void(* irq_handler)(int, void *)

Definition at line 34 of file dma.c.

spinlock_t lock

Definition at line 36 of file dma.c.

size_t max_len

Definition at line 128 of file musb_dma.h.

char * name

Definition at line 32 of file dma.c.

puv3_dma_prio prio

Definition at line 27 of file dma.c.

pxa_dma_prio prio

Definition at line 33 of file dma.c.

void* private_data

Definition at line 126 of file musb_dma.h.

struct dma_register* regs

Definition at line 166 of file dma.h.

struct dmasg* sg

Definition at line 167 of file dma.h.

enum dma_channel_status status

Definition at line 130 of file musb_dma.h.

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The documentation for this struct was generated from the following files:

• arch/arm/plat-pxa/dma.c
• arch/blackfin/include/asm/dma.h
• arch/mips/include/asm/mach-rc32434/dma.h
• arch/unicore32/kernel/dma.c
• drivers/usb/musb/musb_dma.h