1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/*
* Copyright (C) 2017-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include "shared/source/os_interface/linux/drm_neo.h"
#include "shared/source/os_interface/linux/os_time_linux.h"
#include "drm/i915_drm.h"
#include <cstdio>
namespace NEO {
class DrmNullDevice : public Drm {
public:
int ioctl(unsigned long request, void *arg) override {
if (request == DRM_IOCTL_I915_GETPARAM || request == DRM_IOCTL_I915_QUERY) {
return Drm::ioctl(request, arg);
} else if (request == DRM_IOCTL_I915_REG_READ) {
struct drm_i915_reg_read *regArg = static_cast<struct drm_i915_reg_read *>(arg);
// Handle only 36b timestamp
if (regArg->offset == (TIMESTAMP_LOW_REG | 1)) {
gpuTimestamp += 1000;
regArg->val = gpuTimestamp & 0x0000000FFFFFFFFF;
} else if (regArg->offset == TIMESTAMP_LOW_REG || regArg->offset == TIMESTAMP_HIGH_REG) {
return -1;
}
return 0;
} else {
return 0;
}
}
DrmNullDevice(std::unique_ptr<HwDeviceId> hwDeviceId, RootDeviceEnvironment &rootDeviceEnvironment) : Drm(std::move(hwDeviceId), rootDeviceEnvironment), gpuTimestamp(0){};
protected:
uint64_t gpuTimestamp;
};
} // namespace NEO
|
