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102 lines
3.0 KiB
102 lines
3.0 KiB
/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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*** To edit the content of this header, modify the corresponding
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*** source file (e.g. under external/kernel-headers/original/) then
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*** run bionic/libc/kernel/tools/update_all.py
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***
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*** Any manual change here will be lost the next time this script will
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*** be run. You've been warned!
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***
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****************************************************************************
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****************************************************************************/
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#ifndef _LINUX_VIRTIO_BLK_H
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#define _LINUX_VIRTIO_BLK_H
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#include <linux/types.h>
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#include <linux/virtio_ids.h>
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#include <linux/virtio_config.h>
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#include <linux/virtio_types.h>
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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_TOPOLOGY 10
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#define VIRTIO_BLK_F_MQ 12
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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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#ifndef VIRTIO_BLK_NO_LEGACY
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#define VIRTIO_BLK_F_BARRIER 0
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#define VIRTIO_BLK_F_SCSI 7
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#define VIRTIO_BLK_F_FLUSH 9
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#define VIRTIO_BLK_F_CONFIG_WCE 11
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#define VIRTIO_BLK_F_WCE VIRTIO_BLK_F_FLUSH
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#endif
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#define VIRTIO_BLK_ID_BYTES 20
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struct virtio_blk_config {
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__virtio64 capacity;
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__virtio32 size_max;
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__virtio32 seg_max;
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struct virtio_blk_geometry {
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__virtio16 cylinders;
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__u8 heads;
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__u8 sectors;
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} geometry;
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__virtio32 blk_size;
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__u8 physical_block_exp;
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__u8 alignment_offset;
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__virtio16 min_io_size;
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__virtio32 opt_io_size;
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__u8 wce;
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__u8 unused;
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__virtio16 num_queues;
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__virtio32 max_discard_sectors;
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__virtio32 max_discard_seg;
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__virtio32 discard_sector_alignment;
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__virtio32 max_write_zeroes_sectors;
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__virtio32 max_write_zeroes_seg;
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__u8 write_zeroes_may_unmap;
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__u8 unused1[3];
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} __attribute__((packed));
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#define VIRTIO_BLK_T_IN 0
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#define VIRTIO_BLK_T_OUT 1
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#ifndef VIRTIO_BLK_NO_LEGACY
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#define VIRTIO_BLK_T_SCSI_CMD 2
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#endif
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#define VIRTIO_BLK_T_FLUSH 4
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#define VIRTIO_BLK_T_GET_ID 8
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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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#ifndef VIRTIO_BLK_NO_LEGACY
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#define VIRTIO_BLK_T_BARRIER 0x80000000
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#endif
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struct virtio_blk_outhdr {
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__virtio32 type;
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__virtio32 ioprio;
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__virtio64 sector;
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};
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#define VIRTIO_BLK_WRITE_ZEROES_FLAG_UNMAP 0x00000001
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struct virtio_blk_discard_write_zeroes {
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__le64 sector;
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__le32 num_sectors;
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__le32 flags;
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};
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#ifndef VIRTIO_BLK_NO_LEGACY
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struct virtio_scsi_inhdr {
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__virtio32 errors;
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__virtio32 data_len;
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__virtio32 sense_len;
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__virtio32 residual;
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};
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#endif
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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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#endif
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