1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef _UAPI_LINUX_VIRTIO_RING_H
20#define _UAPI_LINUX_VIRTIO_RING_H
21#include <stdint.h>
22#include <linux/types.h>
23/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
24#include <linux/virtio_types.h>
25#define VRING_DESC_F_NEXT 1
26#define VRING_DESC_F_WRITE 2
27#define VRING_DESC_F_INDIRECT 4
28/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
29#define VRING_USED_F_NO_NOTIFY 1
30#define VRING_AVAIL_F_NO_INTERRUPT 1
31#define VIRTIO_RING_F_INDIRECT_DESC 28
32#define VIRTIO_RING_F_EVENT_IDX 29
33/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
34struct vring_desc {
35  __virtio64 addr;
36  __virtio32 len;
37  __virtio16 flags;
38/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
39  __virtio16 next;
40};
41struct vring_avail {
42  __virtio16 flags;
43/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
44  __virtio16 idx;
45  __virtio16 ring[];
46};
47struct vring_used_elem {
48/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
49  __virtio32 id;
50  __virtio32 len;
51};
52struct vring_used {
53/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
54  __virtio16 flags;
55  __virtio16 idx;
56  struct vring_used_elem ring[];
57};
58/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
59struct vring {
60  unsigned int num;
61  struct vring_desc * desc;
62  struct vring_avail * avail;
63/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
64  struct vring_used * used;
65};
66#define VRING_AVAIL_ALIGN_SIZE 2
67#define VRING_USED_ALIGN_SIZE 4
68/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
69#define VRING_DESC_ALIGN_SIZE 16
70#define vring_used_event(vr) ((vr)->avail->ring[(vr)->num])
71#define vring_avail_event(vr) (* (__virtio16 *) & (vr)->used->ring[(vr)->num])
72#endif
73/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
74