LXR linux/include/uapi/rdma/efa-abi.h

   1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
   2/*
   3 * Copyright 2018-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
   4 */
   5
   6#ifndef EFA_ABI_USER_H
   7#define EFA_ABI_USER_H
   8
   9#include <linux/types.h>
  10
  11/*
  12 * Increment this value if any changes that break userspace ABI
  13 * compatibility are made.
  14 */
  15#define EFA_UVERBS_ABI_VERSION 1
  16
  17/*
  18 * Keep structs aligned to 8 bytes.
  19 * Keep reserved fields as arrays of __u8 named reserved_XXX where XXX is the
  20 * hex bit offset of the field.
  21 */
  22
  23enum {
  24        EFA_ALLOC_UCONTEXT_CMD_COMP_TX_BATCH  = 1 << 0,
  25        EFA_ALLOC_UCONTEXT_CMD_COMP_MIN_SQ_WR = 1 << 1,
  26};
  27
  28struct efa_ibv_alloc_ucontext_cmd {
  29        __u32 comp_mask;
  30        __u8 reserved_20[4];
  31};
  32
  33enum efa_ibv_user_cmds_supp_udata {
  34        EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0,
  35        EFA_USER_CMDS_SUPP_UDATA_CREATE_AH    = 1 << 1,
  36};
  37
  38struct efa_ibv_alloc_ucontext_resp {
  39        __u32 comp_mask;
  40        __u32 cmds_supp_udata_mask;
  41        __u16 sub_cqs_per_cq;
  42        __u16 inline_buf_size;
  43        __u32 max_llq_size; /* bytes */
  44        __u16 max_tx_batch; /* units of 64 bytes */
  45        __u16 min_sq_wr;
  46        __u8 reserved_a0[4];
  47};
  48
  49struct efa_ibv_alloc_pd_resp {
  50        __u32 comp_mask;
  51        __u16 pdn;
  52        __u8 reserved_30[2];
  53};
  54
  55struct efa_ibv_create_cq {
  56        __u32 comp_mask;
  57        __u32 cq_entry_size;
  58        __u16 num_sub_cqs;
  59        __u8 reserved_50[6];
  60};
  61
  62struct efa_ibv_create_cq_resp {
  63        __u32 comp_mask;
  64        __u8 reserved_20[4];
  65        __aligned_u64 q_mmap_key;
  66        __aligned_u64 q_mmap_size;
  67        __u16 cq_idx;
  68        __u8 reserved_d0[6];
  69};
  70
  71enum {
  72        EFA_QP_DRIVER_TYPE_SRD = 0,
  73};
  74
  75struct efa_ibv_create_qp {
  76        __u32 comp_mask;
  77        __u32 rq_ring_size; /* bytes */
  78        __u32 sq_ring_size; /* bytes */
  79        __u32 driver_qp_type;
  80};
  81
  82struct efa_ibv_create_qp_resp {
  83        __u32 comp_mask;
  84        /* the offset inside the page of the rq db */
  85        __u32 rq_db_offset;
  86        /* the offset inside the page of the sq db */
  87        __u32 sq_db_offset;
  88        /* the offset inside the page of descriptors buffer */
  89        __u32 llq_desc_offset;
  90        __aligned_u64 rq_mmap_key;
  91        __aligned_u64 rq_mmap_size;
  92        __aligned_u64 rq_db_mmap_key;
  93        __aligned_u64 sq_db_mmap_key;
  94        __aligned_u64 llq_desc_mmap_key;
  95        __u16 send_sub_cq_idx;
  96        __u16 recv_sub_cq_idx;
  97        __u8 reserved_1e0[4];
  98};
  99
 100struct efa_ibv_create_ah_resp {
 101        __u32 comp_mask;
 102        __u16 efa_address_handle;
 103        __u8 reserved_30[2];
 104};
 105
 106enum {
 107        EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
 108        EFA_QUERY_DEVICE_CAPS_RNR_RETRY = 1 << 1,
 109};
 110
 111struct efa_ibv_ex_query_device_resp {
 112        __u32 comp_mask;
 113        __u32 max_sq_wr;
 114        __u32 max_rq_wr;
 115        __u16 max_sq_sge;
 116        __u16 max_rq_sge;
 117        __u32 max_rdma_size;
 118        __u32 device_caps;
 119};
 120
 121#endif /* EFA_ABI_USER_H */
 122