contrib/ofed/libibverbs/ibverbs.h

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #ifndef IB_VERBS_H
  35 #define IB_VERBS_H
  36
  37 #include <pthread.h>
  38
  39 #include <infiniband/driver.h>
  40
  41 #define INIT            __attribute__((constructor))
  42
  43 #define DEFAULT_ABI     "IBVERBS_1.1"
  44
  45 #define symver(name, api, ver) asm(".symver " #name "," #api "@" #ver)
  46 #define default_symver(name, api)                                              \
  47         asm(".symver " #name "," #api "@@" DEFAULT_ABI)
  48 #define private_symver(name, api)                                              \
  49         asm(".symver " #name "," #api "@@IBVERBS_PRIVATE_14")
  50
  51 #define PFX             "libibverbs: "
  52
  53 struct ibv_abi_compat_v2 {
  54         struct ibv_comp_channel channel;
  55         pthread_mutex_t         in_use;
  56 };
  57
  58 extern int abi_ver;
  59
  60 int ibverbs_init(struct ibv_device ***list);
  61
  62 struct verbs_ex_private {
  63         struct ibv_cq_ex *(*create_cq_ex)(struct ibv_context *context,
  64                                           struct ibv_cq_init_attr_ex *init_attr);
  65 };
  66
  67 #define IBV_INIT_CMD(cmd, size, opcode)                                 \
  68         do {                                                            \
  69                 if (abi_ver > 2)                                        \
  70                         (cmd)->command = IB_USER_VERBS_CMD_##opcode;    \
  71                 else                                                    \
  72                         (cmd)->command = IB_USER_VERBS_CMD_##opcode##_V2; \
  73                 (cmd)->in_words  = (size) / 4;                          \
  74                 (cmd)->out_words = 0;                                   \
  75         } while (0)
  76
  77 #define IBV_INIT_CMD_RESP(cmd, size, opcode, out, outsize)              \
  78         do {                                                            \
  79                 if (abi_ver > 2)                                        \
  80                         (cmd)->command = IB_USER_VERBS_CMD_##opcode;    \
  81                 else                                                    \
  82                         (cmd)->command = IB_USER_VERBS_CMD_##opcode##_V2; \
  83                 (cmd)->in_words  = (size) / 4;                          \
  84                 (cmd)->out_words = (outsize) / 4;                       \
  85                 (cmd)->response  = (uintptr_t) (out);                   \
  86         } while (0)
  87
  88 #define IBV_INIT_CMD_RESP_EX_V(cmd, cmd_size, size, opcode, out, resp_size,\
  89                 outsize)                                                   \
  90         do {                                                               \
  91                 size_t c_size = cmd_size - sizeof(struct ex_hdr);          \
  92                 if (abi_ver > 2)                                           \
  93                         (cmd)->hdr.command = IB_USER_VERBS_CMD_##opcode;   \
  94                 else                                                       \
  95                         (cmd)->hdr.command =                               \
  96                                 IB_USER_VERBS_CMD_##opcode##_V2;           \
  97                 (cmd)->hdr.in_words  = ((c_size) / 8);                     \
  98                 (cmd)->hdr.out_words = ((resp_size) / 8);                  \
  99                 (cmd)->hdr.provider_in_words   = (((size) - (cmd_size))/8);\
 100                 (cmd)->hdr.provider_out_words  =                           \
 101                              (((outsize) - (resp_size)) / 8);              \
 102                 (cmd)->hdr.response  = (uintptr_t) (out);                  \
 103                 (cmd)->hdr.reserved = 0;                                   \
 104         } while (0)
 105
 106 #define IBV_INIT_CMD_RESP_EX_VCMD(cmd, cmd_size, size, opcode, out, outsize) \
 107         IBV_INIT_CMD_RESP_EX_V(cmd, cmd_size, size, opcode, out,             \
 108                         sizeof(*(out)), outsize)
 109
 110 #define IBV_INIT_CMD_RESP_EX(cmd, size, opcode, out, outsize)                \
 111         IBV_INIT_CMD_RESP_EX_V(cmd, sizeof(*(cmd)), size, opcode, out,    \
 112                         sizeof(*(out)), outsize)
 113
 114 #define IBV_INIT_CMD_EX(cmd, size, opcode)                                   \
 115         IBV_INIT_CMD_RESP_EX_V(cmd, sizeof(*(cmd)), size, opcode, NULL, 0, 0)
 116
 117 #endif /* IB_VERBS_H */