mirror of
https://github.com/intel/compute-runtime.git
synced 2025-12-30 01:35:20 +08:00
7c489ac60d
Implemented function level reset.
Implementation is:
Make sure we are root (otherwise, return insufficient permissions)
Make sure no one has the device open
(otherwise, return hande object in use)
Close our file handle
Unbind the device from the kernel driver
Make sure no one still has the device open
(otherwise, kill them)
Perform function level reset (FLR)
Rebind the device to the kernel driver
Change-Id: Ic57b95487e73b5a5f2d03e619d813bf4199adf40
Signed-off-by: Bill Jordan <bill.jordan@intel.com>
111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
/*
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* Copyright (C) 2020 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#pragma once
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#include "level_zero/ze_api.h"
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#include "level_zero/zet_api.h"
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#include <fstream>
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#include <iostream>
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#include <list>
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#include <sstream>
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#include <string>
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#include <sys/stat.h>
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#include <sys/sysmacros.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <vector>
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namespace L0 {
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class FsAccess {
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public:
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static FsAccess *create();
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~FsAccess() = default;
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ze_result_t canRead(const std::string file);
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ze_result_t canWrite(const std::string file);
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ze_result_t read(const std::string file, std::string &val);
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ze_result_t read(const std::string file, std::vector<std::string> &val);
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ze_result_t write(const std::string file, const std::string val);
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ze_result_t readSymLink(const std::string path, std::string &buf);
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ze_result_t getRealPath(const std::string path, std::string &buf);
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ze_result_t listDirectory(const std::string path, std::vector<std::string> &list);
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std::string getBaseName(const std::string path);
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std::string getDirName(const std::string path);
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ze_bool_t fileExists(const std::string file);
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protected:
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FsAccess();
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};
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class ProcfsAccess : private FsAccess {
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public:
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static ProcfsAccess *create();
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~ProcfsAccess() = default;
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ze_result_t listProcesses(std::vector<::pid_t> &list);
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::pid_t myProcessId();
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ze_result_t getFileDescriptors(const ::pid_t pid, std::vector<int> &list);
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ze_result_t getFileName(const ::pid_t pid, const int fd, std::string &val);
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private:
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ProcfsAccess() = default;
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std::string fullPath(const ::pid_t pid);
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std::string fdDirPath(const ::pid_t pid);
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std::string fullFdPath(const ::pid_t pid, const int fd);
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static const std::string procDir;
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static const std::string fdDir;
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};
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class SysfsAccess : private FsAccess {
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public:
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static SysfsAccess *create(const std::string file);
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~SysfsAccess() = default;
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ze_result_t canRead(const std::string file);
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ze_result_t canWrite(const std::string file);
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ze_result_t read(const std::string file, std::string &val);
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ze_result_t read(const std::string file, int &val);
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ze_result_t read(const std::string file, double &val);
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ze_result_t read(const std::string file, std::vector<std::string> &val);
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ze_result_t write(const std::string file, const std::string val);
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ze_result_t write(const std::string file, const int val);
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ze_result_t write(const std::string file, const double val);
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ze_result_t readSymLink(const std::string path, std::string &buf);
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ze_result_t getRealPath(const std::string path, std::string &buf);
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ze_result_t bindDevice(const std::string device);
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ze_result_t unbindDevice(const std::string device);
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ze_bool_t fileExists(const std::string file);
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ze_bool_t isMyDeviceFile(const std::string dev);
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private:
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SysfsAccess() = delete;
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SysfsAccess(const std::string file);
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std::string fullPath(const std::string file);
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std::vector<std::string> deviceNames;
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std::string dirname;
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static const std::string drmPath;
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static const std::string devicesPath;
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static const std::string primaryDevName;
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static const std::string drmDriverDevNodeDir;
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static const std::string intelGpuBindEntry;
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static const std::string intelGpuUnbindEntry;
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};
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} // namespace L0
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