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https://github.com/intel/compute-runtime.git
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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>
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/*
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* Copyright (C) 2019-2020 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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#include "level_zero/tools/source/sysman/linux/os_sysman_imp.h"
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#include "level_zero/tools/source/sysman/linux/fs_access.h"
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namespace L0 {
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ze_result_t LinuxSysmanImp::init() {
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pFsAccess = FsAccess::create();
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UNRECOVERABLE_IF(nullptr == pFsAccess);
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pProcfsAccess = ProcfsAccess::create();
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UNRECOVERABLE_IF(nullptr == pProcfsAccess);
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Device *pDevice = Device::fromHandle(pParentSysmanImp->hCoreDevice);
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NEO::OSInterface &OsInterface = pDevice->getOsInterface();
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NEO::Drm *pDrm = OsInterface.get()->getDrm();
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int myDeviceFd = pDrm->getFileDescriptor();
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std::string myDeviceName;
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ze_result_t result = pProcfsAccess->getFileName(pProcfsAccess->myProcessId(), myDeviceFd, myDeviceName);
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if (ZE_RESULT_SUCCESS != result) {
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return result;
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}
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pSysfsAccess = SysfsAccess::create(myDeviceName);
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UNRECOVERABLE_IF(nullptr == pSysfsAccess);
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return ZE_RESULT_SUCCESS;
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}
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FsAccess &LinuxSysmanImp::getFsAccess() {
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UNRECOVERABLE_IF(nullptr == pFsAccess);
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return *pFsAccess;
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}
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ProcfsAccess &LinuxSysmanImp::getProcfsAccess() {
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UNRECOVERABLE_IF(nullptr == pProcfsAccess);
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return *pProcfsAccess;
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}
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SysfsAccess &LinuxSysmanImp::getSysfsAccess() {
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UNRECOVERABLE_IF(nullptr == pSysfsAccess);
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return *pSysfsAccess;
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}
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LinuxSysmanImp::LinuxSysmanImp(SysmanImp *pParentSysmanImp) {
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this->pParentSysmanImp = pParentSysmanImp;
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}
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LinuxSysmanImp::~LinuxSysmanImp() {
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if (nullptr != pSysfsAccess) {
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delete pSysfsAccess;
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}
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if (nullptr != pProcfsAccess) {
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delete pProcfsAccess;
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}
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if (nullptr != pFsAccess) {
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delete pFsAccess;
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}
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}
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OsSysman *OsSysman::create(SysmanImp *pParentSysmanImp) {
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LinuxSysmanImp *pLinuxSysmanImp = new LinuxSysmanImp(pParentSysmanImp);
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return static_cast<OsSysman *>(pLinuxSysmanImp);
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}
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} // namespace L0
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