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_VDUSE_H_ 20 #define _UAPI_VDUSE_H_ 21 #include <linux/types.h> 22 #define VDUSE_BASE 0x81 23 #define VDUSE_API_VERSION 0 24 #define VDUSE_GET_API_VERSION _IOR(VDUSE_BASE, 0x00, __u64) 25 #define VDUSE_SET_API_VERSION _IOW(VDUSE_BASE, 0x01, __u64) 26 struct vduse_dev_config { 27 #define VDUSE_NAME_MAX 256 28 char name[VDUSE_NAME_MAX]; 29 __u32 vendor_id; 30 __u32 device_id; 31 __u64 features; 32 __u32 vq_num; 33 __u32 vq_align; 34 __u32 reserved[13]; 35 __u32 config_size; 36 __u8 config[]; 37 }; 38 #define VDUSE_CREATE_DEV _IOW(VDUSE_BASE, 0x02, struct vduse_dev_config) 39 #define VDUSE_DESTROY_DEV _IOW(VDUSE_BASE, 0x03, char[VDUSE_NAME_MAX]) 40 struct vduse_iotlb_entry { 41 __u64 offset; 42 __u64 start; 43 __u64 last; 44 #define VDUSE_ACCESS_RO 0x1 45 #define VDUSE_ACCESS_WO 0x2 46 #define VDUSE_ACCESS_RW 0x3 47 __u8 perm; 48 }; 49 #define VDUSE_IOTLB_GET_FD _IOWR(VDUSE_BASE, 0x10, struct vduse_iotlb_entry) 50 #define VDUSE_DEV_GET_FEATURES _IOR(VDUSE_BASE, 0x11, __u64) 51 struct vduse_config_data { 52 __u32 offset; 53 __u32 length; 54 __u8 buffer[]; 55 }; 56 #define VDUSE_DEV_SET_CONFIG _IOW(VDUSE_BASE, 0x12, struct vduse_config_data) 57 #define VDUSE_DEV_INJECT_CONFIG_IRQ _IO(VDUSE_BASE, 0x13) 58 struct vduse_vq_config { 59 __u32 index; 60 __u16 max_size; 61 __u16 reserved[13]; 62 }; 63 #define VDUSE_VQ_SETUP _IOW(VDUSE_BASE, 0x14, struct vduse_vq_config) 64 struct vduse_vq_state_split { 65 __u16 avail_index; 66 }; 67 struct vduse_vq_state_packed { 68 __u16 last_avail_counter; 69 __u16 last_avail_idx; 70 __u16 last_used_counter; 71 __u16 last_used_idx; 72 }; 73 struct vduse_vq_info { 74 __u32 index; 75 __u32 num; 76 __u64 desc_addr; 77 __u64 driver_addr; 78 __u64 device_addr; 79 union { 80 struct vduse_vq_state_split split; 81 struct vduse_vq_state_packed packed; 82 }; 83 __u8 ready; 84 }; 85 #define VDUSE_VQ_GET_INFO _IOWR(VDUSE_BASE, 0x15, struct vduse_vq_info) 86 struct vduse_vq_eventfd { 87 __u32 index; 88 #define VDUSE_EVENTFD_DEASSIGN - 1 89 int fd; 90 }; 91 #define VDUSE_VQ_SETUP_KICKFD _IOW(VDUSE_BASE, 0x16, struct vduse_vq_eventfd) 92 #define VDUSE_VQ_INJECT_IRQ _IOW(VDUSE_BASE, 0x17, __u32) 93 struct vduse_iova_umem { 94 __u64 uaddr; 95 __u64 iova; 96 __u64 size; 97 __u64 reserved[3]; 98 }; 99 #define VDUSE_IOTLB_REG_UMEM _IOW(VDUSE_BASE, 0x18, struct vduse_iova_umem) 100 #define VDUSE_IOTLB_DEREG_UMEM _IOW(VDUSE_BASE, 0x19, struct vduse_iova_umem) 101 struct vduse_iova_info { 102 __u64 start; 103 __u64 last; 104 #define VDUSE_IOVA_CAP_UMEM (1 << 0) 105 __u64 capability; 106 __u64 reserved[3]; 107 }; 108 #define VDUSE_IOTLB_GET_INFO _IOWR(VDUSE_BASE, 0x1a, struct vduse_iova_info) 109 enum vduse_req_type { 110 VDUSE_GET_VQ_STATE, 111 VDUSE_SET_STATUS, 112 VDUSE_UPDATE_IOTLB, 113 }; 114 struct vduse_vq_state { 115 __u32 index; 116 union { 117 struct vduse_vq_state_split split; 118 struct vduse_vq_state_packed packed; 119 }; 120 }; 121 struct vduse_dev_status { 122 __u8 status; 123 }; 124 struct vduse_iova_range { 125 __u64 start; 126 __u64 last; 127 }; 128 struct vduse_dev_request { 129 __u32 type; 130 __u32 request_id; 131 __u32 reserved[4]; 132 union { 133 struct vduse_vq_state vq_state; 134 struct vduse_dev_status s; 135 struct vduse_iova_range iova; 136 __u32 padding[32]; 137 }; 138 }; 139 struct vduse_dev_response { 140 __u32 request_id; 141 #define VDUSE_REQ_RESULT_OK 0x00 142 #define VDUSE_REQ_RESULT_FAILED 0x01 143 __u32 result; 144 __u32 reserved[4]; 145 union { 146 struct vduse_vq_state vq_state; 147 __u32 padding[32]; 148 }; 149 }; 150 #endif 151