Mercurial > hg > truffle
view src/os/linux/vm/gpu_linux.cpp @ 16524:a08a58d0736b
[SPARC] Emit compareAndSwap for AtomicInteger and AtomicLong, Removing o7 register from usable ones, as this register is always overwritten, when using Call or JumpAndLink instructions in SPARC, even callee does not overwrite explicitly, implicit exception is defined when doing integer division, parameter constraint narrowed to only register on Unary2Op, Fix SPARCTestOp, as it did a compare instead of an and with condition codes
author | Stefan Anzinger <stefan.anzinger@gmail.com> |
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date | Tue, 15 Jul 2014 19:07:29 -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); }