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45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
#include <mini-os/wait.h>
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#include <xen/io/blkif.h>
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#include <mini-os/types.h>
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struct blkfront_dev;
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struct blkfront_aiocb
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{
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struct blkfront_dev *aio_dev;
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uint8_t *aio_buf;
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size_t aio_nbytes;
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off_t aio_offset;
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size_t total_bytes;
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uint8_t is_write;
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void *data;
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grant_ref_t gref[BLKIF_MAX_SEGMENTS_PER_REQUEST];
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int n;
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void (*aio_cb)(struct blkfront_aiocb *aiocb, int ret);
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};
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struct blkfront_info
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{
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uint64_t sectors;
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unsigned sector_size;
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int mode;
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int info;
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int barrier;
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int flush;
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};
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struct blkfront_dev *init_blkfront(char *nodename, struct blkfront_info *info);
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#ifdef HAVE_LIBC
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int blkfront_open(struct blkfront_dev *dev);
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#endif
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void blkfront_aio(struct blkfront_aiocb *aiocbp, int write);
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#define blkfront_aio_read(aiocbp) blkfront_aio(aiocbp, 0)
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#define blkfront_aio_write(aiocbp) blkfront_aio(aiocbp, 1)
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void blkfront_io(struct blkfront_aiocb *aiocbp, int write);
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#define blkfront_read(aiocbp) blkfront_io(aiocbp, 0)
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#define blkfront_write(aiocbp) blkfront_io(aiocbp, 1)
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void blkfront_aio_push_operation(struct blkfront_aiocb *aiocbp, uint8_t op);
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int blkfront_aio_poll(struct blkfront_dev *dev);
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void blkfront_sync(struct blkfront_dev *dev);
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void shutdown_blkfront(struct blkfront_dev *dev);
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extern struct wait_queue_head blkfront_queue;
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