58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
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#ifndef _KERNEL_DRIVERS_STORAGE_VIRTIO_BLOCK_H
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#define _KERNEL_DRIVERS_STORAGE_VIRTIO_BLOCK_H
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#include <drivers/driver_manager.h>
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#include <drivers/virtio/virtio.h>
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#include <libkern/types.h>
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#include <mem/kmalloc.h>
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#define VIRTIO_BLK_T_IN (0)
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#define VIRTIO_BLK_T_OUT (1)
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#define VIRTIO_BLK_T_FLUSH (4)
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#define VIRTIO_BLK_T_DISCARD (11)
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#define VIRTIO_BLK_T_WRITE_ZEROES (13)
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// Status values
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#define VIRTIO_BLK_S_OK (0)
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#define VIRTIO_BLK_S_IOERR (1)
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#define VIRTIO_BLK_S_UNSUPP (2)
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// Feature bits
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#define VIRTIO_BLK_F_SIZE_MAX (1)
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#define VIRTIO_BLK_F_SEG_MAX (2)
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#define VIRTIO_BLK_F_GEOMETRY (4)
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#define VIRTIO_BLK_F_RO (5)
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#define VIRTIO_BLK_F_BLK_SIZE (6)
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#define VIRTIO_BLK_F_FLUSH (9)
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#define VIRTIO_BLK_F_TOPOLOGY (10)
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#define VIRTIO_BLK_F_CONFIG_WCE (11)
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#define VIRTIO_BLK_F_DISCARD (13)
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#define VIRTIO_BLK_F_WRITE_ZEROES (14)
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struct block_dev {
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virtio_queue_desc_t queue_desc;
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void* ptr;
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uint32_t idx;
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uint32_t ack_used_idx;
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virtio_buffer_desc_t buffer_desc;
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};
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typedef struct block_dev block_dev_t;
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typedef struct {
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uint32_t blktype;
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uint32_t reserved;
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uint64_t sector;
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} block_header_t;
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typedef struct {
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uint8_t status;
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} block_status_t;
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typedef struct {
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block_header_t header;
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block_status_t status;
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uint16_t head;
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uint16_t watcher;
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} block_request_t;
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#endif //_KERNEL_DRIVERS_STORAGE_VIRTIO_BLOCK_H
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