63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
/*
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* Copyright (c) 2017 - 2018, Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include "runtime/os_interface/linux/drm_neo.h"
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#include "runtime/os_interface/linux/os_time_linux.h"
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#include "drm/i915_drm.h"
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#include <cstdio>
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namespace OCLRT {
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class DrmNullDevice : public Drm {
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friend Drm;
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friend DeviceFactory;
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public:
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int ioctl(unsigned long request, void *arg) override {
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if (request == DRM_IOCTL_I915_GETPARAM) {
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return Drm::ioctl(request, arg);
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} else if (request == DRM_IOCTL_I915_REG_READ) {
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struct drm_i915_reg_read *regArg = static_cast<struct drm_i915_reg_read *>(arg);
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// Handle only 36b timestamp
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if (regArg->offset == (TIMESTAMP_LOW_REG | 1)) {
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gpuTimestamp += 1000;
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regArg->val = gpuTimestamp & 0x0000000FFFFFFFFF;
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} else if (regArg->offset == TIMESTAMP_LOW_REG || regArg->offset == TIMESTAMP_HIGH_REG) {
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return -1;
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}
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return 0;
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} else {
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return 0;
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}
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}
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protected:
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DrmNullDevice(int fd) : Drm(fd), gpuTimestamp(0){};
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uint64_t gpuTimestamp;
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};
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}
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