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 USER_BLK_DRV_CMD_INC_H 20 #define USER_BLK_DRV_CMD_INC_H 21 #include <linux/types.h> 22 #define UBLK_CMD_GET_QUEUE_AFFINITY 0x01 23 #define UBLK_CMD_GET_DEV_INFO 0x02 24 #define UBLK_CMD_ADD_DEV 0x04 25 #define UBLK_CMD_DEL_DEV 0x05 26 #define UBLK_CMD_START_DEV 0x06 27 #define UBLK_CMD_STOP_DEV 0x07 28 #define UBLK_CMD_SET_PARAMS 0x08 29 #define UBLK_CMD_GET_PARAMS 0x09 30 #define UBLK_CMD_START_USER_RECOVERY 0x10 31 #define UBLK_CMD_END_USER_RECOVERY 0x11 32 #define UBLK_IO_FETCH_REQ 0x20 33 #define UBLK_IO_COMMIT_AND_FETCH_REQ 0x21 34 #define UBLK_IO_NEED_GET_DATA 0x22 35 #define UBLK_IO_RES_OK 0 36 #define UBLK_IO_RES_NEED_GET_DATA 1 37 #define UBLK_IO_RES_ABORT (- ENODEV) 38 #define UBLKSRV_CMD_BUF_OFFSET 0 39 #define UBLKSRV_IO_BUF_OFFSET 0x80000000 40 #define UBLK_MAX_QUEUE_DEPTH 4096 41 #define UBLK_F_SUPPORT_ZERO_COPY (1ULL << 0) 42 #define UBLK_F_URING_CMD_COMP_IN_TASK (1ULL << 1) 43 #define UBLK_F_NEED_GET_DATA (1UL << 2) 44 #define UBLK_F_USER_RECOVERY (1UL << 3) 45 #define UBLK_F_USER_RECOVERY_REISSUE (1UL << 4) 46 #define UBLK_S_DEV_DEAD 0 47 #define UBLK_S_DEV_LIVE 1 48 #define UBLK_S_DEV_QUIESCED 2 49 struct ublksrv_ctrl_cmd { 50 __u32 dev_id; 51 __u16 queue_id; 52 __u16 len; 53 __u64 addr; 54 __u64 data[2]; 55 }; 56 struct ublksrv_ctrl_dev_info { 57 __u16 nr_hw_queues; 58 __u16 queue_depth; 59 __u16 state; 60 __u16 pad0; 61 __u32 max_io_buf_bytes; 62 __u32 dev_id; 63 __s32 ublksrv_pid; 64 __u32 pad1; 65 __u64 flags; 66 __u64 ublksrv_flags; 67 __u64 reserved0; 68 __u64 reserved1; 69 __u64 reserved2; 70 }; 71 #define UBLK_IO_OP_READ 0 72 #define UBLK_IO_OP_WRITE 1 73 #define UBLK_IO_OP_FLUSH 2 74 #define UBLK_IO_OP_DISCARD 3 75 #define UBLK_IO_OP_WRITE_SAME 4 76 #define UBLK_IO_OP_WRITE_ZEROES 5 77 #define UBLK_IO_F_FAILFAST_DEV (1U << 8) 78 #define UBLK_IO_F_FAILFAST_TRANSPORT (1U << 9) 79 #define UBLK_IO_F_FAILFAST_DRIVER (1U << 10) 80 #define UBLK_IO_F_META (1U << 11) 81 #define UBLK_IO_F_FUA (1U << 13) 82 #define UBLK_IO_F_NOUNMAP (1U << 15) 83 #define UBLK_IO_F_SWAP (1U << 16) 84 struct ublksrv_io_desc { 85 __u32 op_flags; 86 __u32 nr_sectors; 87 __u64 start_sector; 88 __u64 addr; 89 }; 90 struct ublksrv_io_cmd { 91 __u16 q_id; 92 __u16 tag; 93 __s32 result; 94 __u64 addr; 95 }; 96 struct ublk_param_basic { 97 #define UBLK_ATTR_READ_ONLY (1 << 0) 98 #define UBLK_ATTR_ROTATIONAL (1 << 1) 99 #define UBLK_ATTR_VOLATILE_CACHE (1 << 2) 100 #define UBLK_ATTR_FUA (1 << 3) 101 __u32 attrs; 102 __u8 logical_bs_shift; 103 __u8 physical_bs_shift; 104 __u8 io_opt_shift; 105 __u8 io_min_shift; 106 __u32 max_sectors; 107 __u32 chunk_sectors; 108 __u64 dev_sectors; 109 __u64 virt_boundary_mask; 110 }; 111 struct ublk_param_discard { 112 __u32 discard_alignment; 113 __u32 discard_granularity; 114 __u32 max_discard_sectors; 115 __u32 max_write_zeroes_sectors; 116 __u16 max_discard_segments; 117 __u16 reserved0; 118 }; 119 struct ublk_params { 120 __u32 len; 121 #define UBLK_PARAM_TYPE_BASIC (1 << 0) 122 #define UBLK_PARAM_TYPE_DISCARD (1 << 1) 123 __u32 types; 124 struct ublk_param_basic basic; 125 struct ublk_param_discard discard; 126 }; 127 #endif 128