123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
//===- AMDGPUArchLinux.cpp - list AMDGPU installed ------*- C++ -*---------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a tool for detecting name of AMDGPU installed in system
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// using HSA on Linux. This tool is used by AMDGPU OpenMP and HIP driver.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/Version.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/DynamicLibrary.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/raw_ostream.h"
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#include <memory>
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#include <string>
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#include <vector>
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using namespace llvm;
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typedef enum {
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HSA_STATUS_SUCCESS = 0x0,
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} hsa_status_t;
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typedef enum {
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HSA_DEVICE_TYPE_CPU = 0,
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HSA_DEVICE_TYPE_GPU = 1,
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} hsa_device_type_t;
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typedef enum {
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HSA_AGENT_INFO_NAME = 0,
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HSA_AGENT_INFO_DEVICE = 17,
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} hsa_agent_info_t;
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typedef struct hsa_agent_s {
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uint64_t handle;
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} hsa_agent_t;
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hsa_status_t (*hsa_init)();
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hsa_status_t (*hsa_shut_down)();
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hsa_status_t (*hsa_agent_get_info)(hsa_agent_t, hsa_agent_info_t, void *);
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hsa_status_t (*hsa_iterate_agents)(hsa_status_t (*)(hsa_agent_t, void *),
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void *);
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constexpr const char *DynamicHSAPath = "libhsa-runtime64.so";
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llvm::Error loadHSA() {
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std::string ErrMsg;
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auto DynlibHandle = std::make_unique<llvm::sys::DynamicLibrary>(
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llvm::sys::DynamicLibrary::getPermanentLibrary(DynamicHSAPath, &ErrMsg));
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if (!DynlibHandle->isValid()) {
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return llvm::createStringError(llvm::inconvertibleErrorCode(),
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"Failed to 'dlopen' %s", DynamicHSAPath);
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}
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#define DYNAMIC_INIT(SYMBOL) \
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{ \
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void *SymbolPtr = DynlibHandle->getAddressOfSymbol(#SYMBOL); \
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if (!SymbolPtr) \
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return llvm::createStringError(llvm::inconvertibleErrorCode(), \
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"Failed to 'dlsym' " #SYMBOL); \
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SYMBOL = reinterpret_cast<decltype(SYMBOL)>(SymbolPtr); \
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}
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DYNAMIC_INIT(hsa_init);
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DYNAMIC_INIT(hsa_shut_down);
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DYNAMIC_INIT(hsa_agent_get_info);
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DYNAMIC_INIT(hsa_iterate_agents);
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#undef DYNAMIC_INIT
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return llvm::Error::success();
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}
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static hsa_status_t iterateAgentsCallback(hsa_agent_t Agent, void *Data) {
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hsa_device_type_t DeviceType;
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hsa_status_t Status =
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hsa_agent_get_info(Agent, HSA_AGENT_INFO_DEVICE, &DeviceType);
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// continue only if device type if GPU
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if (Status != HSA_STATUS_SUCCESS || DeviceType != HSA_DEVICE_TYPE_GPU) {
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return Status;
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}
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std::vector<std::string> *GPUs =
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static_cast<std::vector<std::string> *>(Data);
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char GPUName[64];
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Status = hsa_agent_get_info(Agent, HSA_AGENT_INFO_NAME, GPUName);
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if (Status != HSA_STATUS_SUCCESS) {
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return Status;
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}
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GPUs->push_back(GPUName);
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return HSA_STATUS_SUCCESS;
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}
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int printGPUsByHSA() {
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// Attempt to load the HSA runtime.
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if (llvm::Error Err = loadHSA()) {
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logAllUnhandledErrors(std::move(Err), llvm::errs());
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return 1;
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}
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hsa_status_t Status = hsa_init();
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if (Status != HSA_STATUS_SUCCESS) {
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return 1;
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}
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std::vector<std::string> GPUs;
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Status = hsa_iterate_agents(iterateAgentsCallback, &GPUs);
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if (Status != HSA_STATUS_SUCCESS) {
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return 1;
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}
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for (const auto &GPU : GPUs)
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llvm::outs() << GPU << '\n';
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if (GPUs.size() < 1)
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return 1;
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hsa_shut_down();
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return 0;
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}
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