include/uapi/rdma/efa-abi.h

   1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
   2 /*
   3  * Copyright 2018-2019 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
  23 enum efa_ibv_user_cmds_supp_udata {
  24         EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0,
  25         EFA_USER_CMDS_SUPP_UDATA_CREATE_AH    = 1 << 1,
  26 };
  27
  28 struct efa_ibv_alloc_ucontext_resp {
  29         __u32 comp_mask;
  30         __u32 cmds_supp_udata_mask;
  31         __u16 sub_cqs_per_cq;
  32         __u16 inline_buf_size;
  33         __u32 max_llq_size; /* bytes */
  34 };
  35
  36 struct efa_ibv_alloc_pd_resp {
  37         __u32 comp_mask;
  38         __u16 pdn;
  39         __u8 reserved_30[2];
  40 };
  41
  42 struct efa_ibv_create_cq {
  43         __u32 comp_mask;
  44         __u32 cq_entry_size;
  45         __u16 num_sub_cqs;
  46         __u8 reserved_50[6];
  47 };
  48
  49 struct efa_ibv_create_cq_resp {
  50         __u32 comp_mask;
  51         __u8 reserved_20[4];
  52         __aligned_u64 q_mmap_key;
  53         __aligned_u64 q_mmap_size;
  54         __u16 cq_idx;
  55         __u8 reserved_d0[6];
  56 };
  57
  58 enum {
  59         EFA_QP_DRIVER_TYPE_SRD = 0,
  60 };
  61
  62 struct efa_ibv_create_qp {
  63         __u32 comp_mask;
  64         __u32 rq_ring_size; /* bytes */
  65         __u32 sq_ring_size; /* bytes */
  66         __u32 driver_qp_type;
  67 };
  68
  69 struct efa_ibv_create_qp_resp {
  70         __u32 comp_mask;
  71         /* the offset inside the page of the rq db */
  72         __u32 rq_db_offset;
  73         /* the offset inside the page of the sq db */
  74         __u32 sq_db_offset;
  75         /* the offset inside the page of descriptors buffer */
  76         __u32 llq_desc_offset;
  77         __aligned_u64 rq_mmap_key;
  78         __aligned_u64 rq_mmap_size;
  79         __aligned_u64 rq_db_mmap_key;
  80         __aligned_u64 sq_db_mmap_key;
  81         __aligned_u64 llq_desc_mmap_key;
  82         __u16 send_sub_cq_idx;
  83         __u16 recv_sub_cq_idx;
  84         __u8 reserved_1e0[4];
  85 };
  86
  87 struct efa_ibv_create_ah_resp {
  88         __u32 comp_mask;
  89         __u16 efa_address_handle;
  90         __u8 reserved_30[2];
  91 };
  92
  93 enum {
  94         EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
  95 };
  96
  97 struct efa_ibv_ex_query_device_resp {
  98         __u32 comp_mask;
  99         __u32 max_sq_wr;
 100         __u32 max_rq_wr;
 101         __u16 max_sq_sge;
 102         __u16 max_rq_sge;
 103         __u32 max_rdma_size;
 104         __u32 device_caps;
 105 };
 106
 107 #endif /* EFA_ABI_USER_H */