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 */ 34 struct 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 }; 41 struct vring_avail { 42 __virtio16 flags; 43 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 44 __virtio16 idx; 45 __virtio16 ring[]; 46 }; 47 struct vring_used_elem { 48 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 49 __virtio32 id; 50 __virtio32 len; 51 }; 52 struct 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 */ 59 struct 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
