Mercurial > hg > graal-compiler
view src/os/linux/vm/gpu_linux.cpp @ 16674:70f47dbbcabd
Truffle/SourceAttribution: NodeUtil.displaySourceAttribution() outut revised for legibility.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Fri, 01 Aug 2014 16:28:06 -0700 |
parents | 66e3af78ea96 |
children |
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/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "runtime/gpu.hpp" #include "ptx/vm/gpu_ptx.hpp" #include "hsail/vm/gpu_hsail.hpp" #include "utilities/ostream.hpp" /* * Probe for CUDA device on PCI bus using /proc/bus/pci/devices. Do * not rely on CUDA tool kit being installed. We will check if CUDA * library is installed later. */ static unsigned int nvidia_vendor_id = 0x10de; static unsigned int amd_vendor_id = 0x1002; #define PCI_DRIVER_NAME_START_POS 255 jobject Gpu::probe_gpus(JNIEnv* env) { bool hsail = false; bool ptx = false; if (Hsail::register_natives(env)) { hsail = true; } /* * Open /proc/bus/pci/devices to look for the first GPU device. For * now, we will just find the first GPU device. Will need to revisit * this to support execution on multiple GPU devices, if they exist. */ FILE *pci_devices = fopen("/proc/bus/pci/devices", "r"); char contents[4096]; unsigned int bus_num_devfn_ign; unsigned int vendor; unsigned int device; const char *driver_name_string = "nvidia"; const int driver_name_string_len = strlen(driver_name_string); if (pci_devices == NULL) { tty->print_cr("*** Failed to open /proc/bus/pci/devices"); return NULL; } while (fgets(contents, sizeof(contents)-1, pci_devices)) { sscanf(contents, "%04x%04x%04x", &bus_num_devfn_ign, &vendor, &device); if (vendor == nvidia_vendor_id) { /* Check if this device is registered to be using nvidia driver */ if (strncmp(&contents[PCI_DRIVER_NAME_START_POS], driver_name_string, driver_name_string_len) == 0) { if (TraceGPUInteraction) { tty->print_cr("Found supported nVidia device [vendor=0x%04x, device=0x%04x]", vendor, device); } if (!ptx && Ptx::register_natives(env)) { ptx = true; } } } } // Close file pointer. fclose(pci_devices); const char* gpus = ""; if (ptx && hsail) { gpus = "PTX,HSAIL"; } else if (ptx) { gpus = "PTX"; } else if (hsail) { gpus = "HSAIL"; } return env->NewStringUTF(gpus); }