rocm-systems/projects/rdc/rdci/src/RdciTopologyLinkSubSystem.cc

/*
Copyright (c) 2024 - present Advanced Micro Devices, Inc. All rights reserved.
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of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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*/
#include "RdciTopologyLinkSubSystem.h"

#include <getopt.h>
#include <signal.h>
#include <unistd.h>

#include "common/rdc_utils.h"
#include "rdc/rdc.h"
#include "rdc_lib/RdcException.h"
#include "rdc_lib/rdc_common.h"
namespace amd {
namespace rdc {
RdciTopologyLinkSubSystem::RdciTopologyLinkSubSystem() : topology_ops_(TOPOLOGY_UNKNOWN) {}

void RdciTopologyLinkSubSystem::parse_cmd_opts(int argc, char** argv) {
  const int HOST_OPTIONS = 1000;
  const struct option long_options[] = {{"host", required_argument, nullptr, HOST_OPTIONS},
                                        {"help", optional_argument, nullptr, 'h'},
                                        {"unauth", optional_argument, nullptr, 'u'},
                                        {"gpu_index", required_argument, nullptr, 'i'},
                                        {nullptr, 0, nullptr, 0}};
  int option_index = 0;
  int opt = 0;
  while ((opt = getopt_long(argc, argv, "hui:", long_options, &option_index)) != -1) {
    {
      switch (opt) {
        case HOST_OPTIONS:
          ip_port_ = optarg;
          break;
        case 'h':
          show_help();
          break;
        case 'u':
          use_auth_ = false;
          break;
        case 'i':
          if (!IsNumber(optarg)) {
            show_help();
            throw RdcException(RDC_ST_BAD_PARAMETER, "The field group index needs to be a number");
          }
          topology_ops_ = TOPOLOGY_INDEX;
          group_index_ = std::stoi(optarg);
          is_group_index_set = true;
          break;
        default:
          show_help();
          throw RdcException(RDC_ST_BAD_PARAMETER, "Unknown command line options");
      }
    }
  }
  if (is_group_index_set == false) {
    show_help();
    throw RdcException(RDC_ST_BAD_PARAMETER, "Need to specify the group index to notify");
  }
}

void RdciTopologyLinkSubSystem::show_help() const {
  std::cout << " topo -- Used to  topology will show how the GPU connected.\n\n";
  std::cout << "Usage\n";
  std::cout << "    rdci topo [--host <IP/FQDN>:port] [--reg] -g <groupId>\n";
  std::cout << "\nFlags:\n";
  show_common_usage();
  std::cout << "  -i  --index                      display the topology"
            << "information for GPU index 0 .\n";
}

static const char* topology_link_type_to_str(rdc_topology_link_type_t type) {
  if (type == RDC_IOLINK_TYPE_PCIEXPRESS) return "Connected via PCIe \t";
  if (type == RDC_IOLINK_TYPE_XGMI) return "Connected via XGMI \t";
  return "N/A \t\t\t";
}

void RdciTopologyLinkSubSystem::process() {
  rdc_status_t result = RDC_ST_OK;
  uint32_t gpu_index_list[RDC_MAX_NUM_DEVICES];
  uint32_t count = 0;
  result = rdc_device_get_all(rdc_handle_, gpu_index_list, &count);
  if (result != RDC_ST_OK) {
    throw RdcException(result, "Error to find devices on the system.");
  }
  if (group_index_ >= count) {
    throw RdcException(
        result, "Fail to get " + std::to_string(group_index_) + " to the topology gpu index");
  }
  switch (topology_ops_) {
    case TOPOLOGY_INDEX: {
      rdc_device_topology_t topology;
      result = rdc_device_topology_get(rdc_handle_, group_index_, &topology);
      if (result == RDC_ST_OK) {
        std::cout << "+-----------------------+"
                  << "-----------------------------"
                  << "------------------+\n";
        std::cout << "| GPU ID: " << group_index_ << "\t\t"
                  << "| Topology Information \t\t\t\t|\n";
        std::cout << "+=======================+"
                  << "============================="
                  << "==================+\n";
        std::cout << "+-----------------------+"
                  << "-----------------------------"
                  << "------------------+\n";
        for (uint32_t i = 0; i < topology.num_of_gpus; i++) {
          if (group_index_ == i) continue;
          std::cout << "| To GPU " << i << "\t\t"
                    << "| " << topology_link_type_to_str(topology.link_infos[i].link_type)
                    << "\t\t\t|\n";
        }
        std::cout << "+-----------------------+"
                  << "-----------------------------"
                  << "------------------+\n";
      }
      break;
    }
    default:
      throw RdcException(RDC_ST_BAD_PARAMETER, "Unknown command");
      break;
  }
}
}  // namespace rdc
}  // namespace amd