libgomp/config/gcn/icv-device.c

   1 /* Copyright (C) 2015-2024 Free Software Foundation, Inc.
   2    Contributed by Mentor Embedded.
   3
   4    This file is part of the GNU Offloading and Multi Processing Library
   5    (libgomp).
   6
   7    Libgomp is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3, or (at your option)
  10    any later version.
  11
  12    Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
  13    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  14    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15    more details.
  16
  17    Under Section 7 of GPL version 3, you are granted additional
  18    permissions described in the GCC Runtime Library Exception, version
  19    3.1, as published by the Free Software Foundation.
  20
  21    You should have received a copy of the GNU General Public License and
  22    a copy of the GCC Runtime Library Exception along with this program;
  23    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24    <http://www.gnu.org/licenses/>.  */
  25
  26 /* This file defines OpenMP API entry points that accelerator targets are
  27    expected to replace.  */
  28
  29 #include "libgomp.h"
  30
  31 /* This is set to the ICV values of current GPU during device initialization,
  32    when the offload image containing this libgomp portion is loaded.  */
  33 volatile struct gomp_offload_icvs GOMP_ADDITIONAL_ICVS;
  34
  35 void
  36 omp_set_default_device (int device_num __attribute__((unused)))
  37 {
  38 }
  39
  40 int
  41 omp_get_default_device (void)
  42 {
  43   return GOMP_ADDITIONAL_ICVS.default_device;
  44 }
  45
  46 int
  47 omp_get_initial_device (void)
  48 {
  49   return GOMP_DEVICE_HOST_FALLBACK;
  50 }
  51
  52 int
  53 omp_get_num_devices (void)
  54 {
  55   return 0;
  56 }
  57
  58 int
  59 omp_is_initial_device (void)
  60 {
  61   /* AMD GCN is an accelerator-only target.  */
  62   return 0;
  63 }
  64
  65 int
  66 omp_get_device_num (void)
  67 {
  68   return GOMP_ADDITIONAL_ICVS.device_num;
  69 }
  70
  71 int
  72 omp_get_max_teams (void)
  73 {
  74   return GOMP_ADDITIONAL_ICVS.nteams;
  75 }
  76
  77 void
  78 omp_set_num_teams (int num_teams)
  79 {
  80   if (num_teams >= 0)
  81     GOMP_ADDITIONAL_ICVS.nteams = num_teams;
  82 }
  83
  84 int
  85 omp_get_teams_thread_limit (void)
  86 {
  87   return GOMP_ADDITIONAL_ICVS.teams_thread_limit;
  88 }
  89
  90 void
  91 omp_set_teams_thread_limit (int thread_limit)
  92 {
  93   if (thread_limit >= 0)
  94     GOMP_ADDITIONAL_ICVS.teams_thread_limit = thread_limit;
  95 }
  96
  97 ialias (omp_set_default_device)
  98 ialias (omp_get_default_device)
  99 ialias (omp_get_initial_device)
 100 ialias (omp_get_num_devices)
 101 ialias (omp_is_initial_device)
 102 ialias (omp_get_device_num)
 103 ialias (omp_get_max_teams)
 104 ialias (omp_set_num_teams)
 105 ialias (omp_get_teams_thread_limit)
 106 ialias (omp_set_teams_thread_limit)