72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
//
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// Created by rick on 06-02-21.
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//
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#ifndef NEW_KERNEL_BLOCKDEV_H
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#define NEW_KERNEL_BLOCKDEV_H
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#include <sys/types.h>
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#include <myke/driver.h>
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#define BLOCK_DEV_ACCESS_OK 0
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#define BLOCK_DEV_ACCESS_ERR 1
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#define BLOCK_DEV_DIRECTION_READ 0
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#define BLOCK_DEV_DIRECTION_WRITE 1
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#define BLOCK_DEV_DRIVER_CHECK_OK 0
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#define BLOCK_DEV_DRIVER_CHECK_NO_MATCH 1
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#define BLOCK_DEV_REGISTER_DRIVER_OK 0
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#define BLOCK_DEV_REGISTER_DRIVER_FULL 1
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#define BLOCK_DEV_REGISTER_OK 0
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#define BLOCK_DEV_REGISTER_FULL 1
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typedef struct block_device block_device;
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typedef uint8_t (*block_device_driver_check_device)(const block_device *device, uint8_t *first_sector);
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typedef uint8_t (*block_device_driver_free)(const block_device *device);
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typedef uint8_t (*block_device_access)(const block_device *device, uint8_t direction, uint32_t lba, uint8_t sectors, void *target);
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struct block_dev_driver {
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char name[16];
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struct {
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uint8_t root_only: 1;
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} flags;
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block_device_driver_check_device check_device;
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block_device_driver_free free_device;
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} __attribute__((__aligned__(STRUCT_ALIGNMENT)));
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#define BLOCK_DEV_DRIVER(order) GENERIC_DRIVER(block_dev_driver, order)
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typedef struct block_device {
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struct {
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uint8_t present: 1;
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uint8_t scanned: 1;
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uint8_t unreadable: 1;
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uint8_t root_device: 1;
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uint8_t driver_installed: 1;
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} flags;
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char identifier[16];
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uint32_t num_lba;
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uint16_t block_size;
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block_device_access access;
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struct block_dev_driver *driver;
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void *device_info; // pointer to driver defined structure
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// todo device info
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} block_device;
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uint8_t block_dev_register(block_device *device);
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void block_dev_free(block_device *device);
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void block_dev_start_task();
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void block_dev_print_info();
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#endif //NEW_KERNEL_BLOCKDEV_H
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