block_device Struct Reference
[Block Device]

A block device. More...

#include <device.h>

Collaboration diagram for block_device:

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Data Fields
uint32_t	nr_blocks
uint16_t	block_size
uint8_t	flags
void(*	prepare_req )(struct block_device *bdev, struct block_request *req, block_addr_t lba, block_len_t nr_blocks, enum block_operation operation)
struct block_request *(*	alloc_req )(struct block_device *bdev)
void(*	free_req )(struct block_device *bdev, struct block_request *req)
uint32_t(*	get_dev_id )(struct block_device *bdev)

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Detailed Description

A block device.

A block device can handle block-oriented requests like read and write. Each request operates on one or more blocks.

Definition at line 138 of file device.h.

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Field Documentation

struct block_request*(* block_device::alloc_req)(struct block_device *bdev) [read]

For internal use only.

Definition at line 153 of file device.h.

Referenced by block_alloc_request().

uint16_t block_device::block_size

For internal use only.

See also:

blkdev_get_block_size()

Definition at line 143 of file device.h.

Referenced by blkdev_get_block_size(), and blkdev_set_block_size().

uint8_t block_device::flags

Flags indicating the state of the device

Definition at line 146 of file device.h.

Referenced by dataflash_detect().

void(* block_device::free_req)(struct block_device *bdev, struct block_request *req)

For internal use only.

Definition at line 155 of file device.h.

Referenced by block_free_request().

uint32_t(* block_device::get_dev_id)(struct block_device *bdev)

For internal use only.

Definition at line 157 of file device.h.

uint32_t block_device::nr_blocks

The total number of blocks the device can hold

Definition at line 140 of file device.h.

Referenced by dataflash_detect().

void(* block_device::prepare_req)(struct block_device *bdev, struct block_request *req, block_addr_t lba, block_len_t nr_blocks, enum block_operation operation)

For internal use only.

Definition at line 148 of file device.h.

Referenced by block_prepare_req().

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

• include/block/device.h