amdsmi.h

/*
 * SPDX-License-Identifier: BSD-3-Clause
 * Copyright © 2012-2026 Inria.  All rights reserved.
 * Copyright (c) 2020, Advanced Micro Devices, Inc. All rights reserved.
 * Written by Advanced Micro Devices,
 * See COPYING in top-level directory.
 */
 
#ifndef HWLOC_AMDSMI_H
#define HWLOC_AMDSMI_H
 
#include "hwloc.h"
#include "hwloc/autogen/config.h"
#include "hwloc/helper.h"
 
#include <amd_smi/amdsmi.h>
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
static __hwloc_inline int
hwloc_amdsmi_get_device_cpuset(hwloc_topology_t topology,
                               amdsmi_processor_handle proc, hwloc_cpuset_t set)
{
  amdsmi_status_t ret;
  uint64_t bdfid = 0;
  unsigned domain, device, bus;
 
  if (!hwloc_topology_is_thissystem(topology)) {
    errno = EINVAL;
    return -1;
  }
 
  ret = amdsmi_get_gpu_bdf_id(proc, &bdfid);
  if (AMDSMI_STATUS_SUCCESS != ret) {
    errno = EINVAL;
    return -1;
  }
  domain = (bdfid>>32) & 0xffffffff;
  bus = ((bdfid & 0xffff)>>8) & 0xff;
  device = ((bdfid & 0xff)>>3) & 0x1f;
 
  return hwloc_get_pci_busid_cpuset(topology, set,
                                    domain, bus, device, 0);
}
 
static __hwloc_inline hwloc_obj_t
hwloc_amdsmi_get_device_osdev_by_index(hwloc_topology_t topology, uint32_t hip_id)
{
  hwloc_obj_t osdev = NULL;
  while ((osdev = hwloc_get_next_osdev(topology, osdev)) != NULL) {
    if ((osdev->attr->osdev.types & (HWLOC_OBJ_OSDEV_GPU|HWLOC_OBJ_OSDEV_COPROC)) /* assume future RSMI devices will be at least GPU or COPROC */
      && osdev->name
      && !strncmp("rsmi", osdev->name, 4)
      && atoi(osdev->name + 4) == (int) hip_id)
      return osdev;
  }
  return NULL;
}
 
static __hwloc_inline hwloc_obj_t
hwloc_amdsmi_get_device_osdev(hwloc_topology_t topology, amdsmi_processor_handle proc)
{
  amdsmi_status_t ret;
  amdsmi_enumeration_info_t enum_info;
 
  ret = amdsmi_get_gpu_enumeration_info(proc, &enum_info);
  if (AMDSMI_STATUS_SUCCESS != ret)
    return NULL;
 
  return hwloc_amdsmi_get_device_osdev_by_index(topology, enum_info.hip_id);
}
 
#ifdef __cplusplus
} /* extern "C" */
#endif
 
 
#endif /* HWLOC_AMDSMI_H */