LXR linux/drivers/gpu/drm/amd/amdgpu/ta_xgmi

   1/*
   2 * Copyright 2018 Advanced Micro Devices, Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 */
  23
  24#ifndef _TA_XGMI_IF_H
  25#define _TA_XGMI_IF_H
  26
  27/* Responses have bit 31 set */
  28#define RSP_ID_MASK (1U << 31)
  29#define RSP_ID(cmdId) (((uint32_t)(cmdId)) | RSP_ID_MASK)
  30
  31enum ta_command_xgmi {
  32        TA_COMMAND_XGMI__INITIALIZE                     = 0x00,
  33        TA_COMMAND_XGMI__GET_NODE_ID                    = 0x01,
  34        TA_COMMAND_XGMI__GET_HIVE_ID                    = 0x02,
  35        TA_COMMAND_XGMI__GET_GET_TOPOLOGY_INFO          = 0x03,
  36        TA_COMMAND_XGMI__SET_TOPOLOGY_INFO              = 0x04,
  37        TA_COMMAND_XGMI__GET_PEER_LINKS                 = 0x0B
  38};
  39
  40/* XGMI related enumerations */
  41/**********************************************************/;
  42enum ta_xgmi_connected_nodes {
  43        TA_XGMI__MAX_CONNECTED_NODES                    = 64
  44};
  45
  46enum ta_xgmi_status {
  47        TA_XGMI_STATUS__SUCCESS                         = 0x00,
  48        TA_XGMI_STATUS__GENERIC_FAILURE                 = 0x01,
  49        TA_XGMI_STATUS__NULL_POINTER                    = 0x02,
  50        TA_XGMI_STATUS__INVALID_PARAMETER               = 0x03,
  51        TA_XGMI_STATUS__NOT_INITIALIZED                 = 0x04,
  52        TA_XGMI_STATUS__INVALID_NODE_NUM                = 0x05,
  53        TA_XGMI_STATUS__INVALID_NODE_ID                 = 0x06,
  54        TA_XGMI_STATUS__INVALID_TOPOLOGY                = 0x07,
  55        TA_XGMI_STATUS__FAILED_ID_GEN                   = 0x08,
  56        TA_XGMI_STATUS__FAILED_TOPOLOGY_INIT            = 0x09,
  57        TA_XGMI_STATUS__SET_SHARING_ERROR               = 0x0A
  58};
  59
  60enum ta_xgmi_assigned_sdma_engine {
  61        TA_XGMI_ASSIGNED_SDMA_ENGINE__NOT_ASSIGNED      = -1,
  62        TA_XGMI_ASSIGNED_SDMA_ENGINE__SDMA0             = 0,
  63        TA_XGMI_ASSIGNED_SDMA_ENGINE__SDMA1             = 1,
  64        TA_XGMI_ASSIGNED_SDMA_ENGINE__SDMA2             = 2,
  65        TA_XGMI_ASSIGNED_SDMA_ENGINE__SDMA3             = 3,
  66        TA_XGMI_ASSIGNED_SDMA_ENGINE__SDMA4             = 4,
  67        TA_XGMI_ASSIGNED_SDMA_ENGINE__SDMA5             = 5
  68};
  69
  70/* input/output structures for XGMI commands */
  71/**********************************************************/
  72struct ta_xgmi_node_info {
  73        uint64_t                                node_id;
  74        uint8_t                                 num_hops;
  75        uint8_t                                 is_sharing_enabled;
  76        enum ta_xgmi_assigned_sdma_engine       sdma_engine;
  77};
  78
  79struct ta_xgmi_peer_link_info {
  80        uint64_t                                node_id;
  81        uint8_t                                 num_links;
  82};
  83
  84struct ta_xgmi_cmd_initialize_output {
  85        uint32_t        status;
  86};
  87
  88struct ta_xgmi_cmd_get_node_id_output {
  89        uint64_t        node_id;
  90};
  91
  92struct ta_xgmi_cmd_get_hive_id_output {
  93        uint64_t        hive_id;
  94};
  95
  96struct ta_xgmi_cmd_get_topology_info_input {
  97        uint32_t                        num_nodes;
  98        struct ta_xgmi_node_info        nodes[TA_XGMI__MAX_CONNECTED_NODES];
  99};
 100
 101struct ta_xgmi_cmd_get_topology_info_output {
 102        uint32_t                        num_nodes;
 103        struct ta_xgmi_node_info        nodes[TA_XGMI__MAX_CONNECTED_NODES];
 104};
 105
 106struct ta_xgmi_cmd_get_peer_link_info_output {
 107        uint32_t                        num_nodes;
 108        struct ta_xgmi_peer_link_info   nodes[TA_XGMI__MAX_CONNECTED_NODES];
 109};
 110
 111struct ta_xgmi_cmd_set_topology_info_input {
 112        uint32_t                        num_nodes;
 113        struct ta_xgmi_node_info        nodes[TA_XGMI__MAX_CONNECTED_NODES];
 114};
 115
 116/**********************************************************/
 117/* Common input structure for XGMI callbacks */
 118union ta_xgmi_cmd_input {
 119        struct ta_xgmi_cmd_get_topology_info_input      get_topology_info;
 120        struct ta_xgmi_cmd_set_topology_info_input      set_topology_info;
 121};
 122
 123/* Common output structure for XGMI callbacks */
 124union ta_xgmi_cmd_output {
 125        struct ta_xgmi_cmd_initialize_output            initialize;
 126        struct ta_xgmi_cmd_get_node_id_output           get_node_id;
 127        struct ta_xgmi_cmd_get_hive_id_output           get_hive_id;
 128        struct ta_xgmi_cmd_get_topology_info_output     get_topology_info;
 129        struct ta_xgmi_cmd_get_peer_link_info_output    get_link_info;
 130};
 131/**********************************************************/
 132
 133struct ta_xgmi_shared_memory {
 134        uint32_t                        cmd_id;
 135        uint32_t                        resp_id;
 136        enum ta_xgmi_status             xgmi_status;
 137        uint8_t                         flag_extend_link_record;
 138        uint8_t                         reserved0[3];
 139        union ta_xgmi_cmd_input         xgmi_in_message;
 140        union ta_xgmi_cmd_output        xgmi_out_message;
 141};
 142
 143#endif   //_TA_XGMI_IF_H
 144