drivers/infiniband/hw/mthca/mthca_wqe.h

   1 /*
   2  * Copyright (c) 2005 Cisco Systems. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef MTHCA_WQE_H
  34 #define MTHCA_WQE_H
  35
  36 #include <linux/types.h>
  37
  38 enum {
  39         MTHCA_NEXT_DBD          = 1 << 7,
  40         MTHCA_NEXT_FENCE        = 1 << 6,
  41         MTHCA_NEXT_CQ_UPDATE    = 1 << 3,
  42         MTHCA_NEXT_EVENT_GEN    = 1 << 2,
  43         MTHCA_NEXT_SOLICIT      = 1 << 1,
  44         MTHCA_NEXT_IP_CSUM      = 1 << 4,
  45         MTHCA_NEXT_TCP_UDP_CSUM = 1 << 5,
  46
  47         MTHCA_MLX_VL15          = 1 << 17,
  48         MTHCA_MLX_SLR           = 1 << 16
  49 };
  50
  51 enum {
  52         MTHCA_INVAL_LKEY                        = 0x100,
  53         MTHCA_TAVOR_MAX_WQES_PER_RECV_DB        = 256,
  54         MTHCA_ARBEL_MAX_WQES_PER_SEND_DB        = 255
  55 };
  56
  57 struct mthca_next_seg {
  58         __be32 nda_op;          /* [31:6] next WQE [4:0] next opcode */
  59         __be32 ee_nds;          /* [31:8] next EE  [7] DBD [6] F [5:0] next WQE size */
  60         __be32 flags;           /* [3] CQ [2] Event [1] Solicit */
  61         __be32 imm;             /* immediate data */
  62 };
  63
  64 struct mthca_tavor_ud_seg {
  65         u32    reserved1;
  66         __be32 lkey;
  67         __be64 av_addr;
  68         u32    reserved2[4];
  69         __be32 dqpn;
  70         __be32 qkey;
  71         u32    reserved3[2];
  72 };
  73
  74 struct mthca_arbel_ud_seg {
  75         __be32 av[8];
  76         __be32 dqpn;
  77         __be32 qkey;
  78         u32    reserved[2];
  79 };
  80
  81 struct mthca_bind_seg {
  82         __be32 flags;           /* [31] Atomic [30] rem write [29] rem read */
  83         u32    reserved;
  84         __be32 new_rkey;
  85         __be32 lkey;
  86         __be64 addr;
  87         __be64 length;
  88 };
  89
  90 struct mthca_raddr_seg {
  91         __be64 raddr;
  92         __be32 rkey;
  93         u32    reserved;
  94 };
  95
  96 struct mthca_atomic_seg {
  97         __be64 swap_add;
  98         __be64 compare;
  99 };
 100
 101 struct mthca_data_seg {
 102         __be32 byte_count;
 103         __be32 lkey;
 104         __be64 addr;
 105 };
 106
 107 struct mthca_mlx_seg {
 108         __be32 nda_op;
 109         __be32 nds;
 110         __be32 flags;           /* [17] VL15 [16] SLR [14:12] static rate
 111                                    [11:8] SL [3] C [2] E */
 112         __be16 rlid;
 113         __be16 vcrc;
 114 };
 115
 116 static __always_inline void mthca_set_data_seg(struct mthca_data_seg *dseg,
 117                                                struct ib_sge *sg)
 118 {
 119         dseg->byte_count = cpu_to_be32(sg->length);
 120         dseg->lkey       = cpu_to_be32(sg->lkey);
 121         dseg->addr       = cpu_to_be64(sg->addr);
 122 }
 123
 124 static __always_inline void mthca_set_data_seg_inval(struct mthca_data_seg *dseg)
 125 {
 126         dseg->byte_count = 0;
 127         dseg->lkey       = cpu_to_be32(MTHCA_INVAL_LKEY);
 128         dseg->addr       = 0;
 129 }
 130
 131 #endif /* MTHCA_WQE_H */