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48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
#ifndef _BLOCK_BLOCK_H
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#define _BLOCK_BLOCK_H
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#define BLOCK_SECTOR_SIZE 512
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#define MAX_BLOCK_DEVS 8
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typedef enum {
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REQ_READ = 0,
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REQ_WRITE = 1,
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REQ_FLUSH = 2
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} block_req_type_t;
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typedef struct block_request {
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block_req_type_t type;
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uint64_t sector;
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uint32_t sector_count;
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void* buffer;
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bool completed;
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int status;
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struct block_request* next;
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} block_request_t;
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typedef struct block_device {
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char name[32];
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uint32_t device_id;
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uint64_t total_sectors;
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uint32_t sector_size;
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bool read_only;
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int (*read_sectors)(struct block_device* dev, uint64_t sector, uint32_t count, void* buffer);
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int (*write_sectors)(struct block_device* dev, uint64_t sector, uint32_t count, const void* buffer);
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int (*flush)(struct block_device* dev);
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block_request_t* queue_head;
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block_request_t* queue_tail;
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} block_device_t;
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void block_init(void);
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int block_register_device(block_device_t* dev);
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block_device_t* block_get_device(const char* name);
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int block_submit_bio(const char* dev_name, block_req_type_t type, uint64_t sector, uint32_t count, void* buffer);
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size_t block_get_device_count(void);
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block_device_t* block_get_device_by_index(size_t index);
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#endif // _BLOCK_BLOCK_H
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