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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright (c) 2017, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
// Intentionally included after xf86 headers so that they in-turn include libdrm version of drm.h
// that doesn't use keyword "virtual" for a variable name. Not doing so leads to the kernel version
// of drm.h being included causing compilation to fail
#include <drm/msm_drm.h>
#include <algorithm>
#include <iterator>
#include "drm_master.h"
#define __CLASS__ "DRMMaster"
using std::mutex;
using std::lock_guard;
using std::begin;
using std::copy;
using std::end;
using std::fill;
namespace drm_utils {
DRMLogger *DRMLogger::s_instance = nullptr;
DRMMaster *DRMMaster::s_instance = nullptr;
mutex DRMMaster::s_lock;
int DRMMaster::GetInstance(DRMMaster **master) {
lock_guard<mutex> obj(s_lock);
if (!s_instance) {
s_instance = new DRMMaster();
if (s_instance->Init() < 0) {
delete s_instance;
s_instance = nullptr;
return -ENODEV;
}
}
*master = s_instance;
return 0;
}
void DRMMaster::DestroyInstance() {
lock_guard<mutex> obj(s_lock);
delete s_instance;
s_instance = nullptr;
}
int DRMMaster::Init() {
dev_fd_ = drmOpen("msm_drm", nullptr);
if (dev_fd_ < 0) {
DRM_LOGE("drmOpen failed with error %d", dev_fd_);
return -ENODEV;
}
return 0;
}
DRMMaster::~DRMMaster() {
drmClose(dev_fd_);
dev_fd_ = -1;
}
int DRMMaster::CreateFbId(const DRMBuffer &drm_buffer, uint32_t *fb_id) {
uint32_t gem_handle = 0;
int ret = drmPrimeFDToHandle(dev_fd_, drm_buffer.fd, &gem_handle);
if (ret) {
DRM_LOGE("drmPrimeFDToHandle failed with error %d", ret);
return ret;
}
struct drm_mode_fb_cmd2 cmd2 {};
cmd2.width = drm_buffer.width;
cmd2.height = drm_buffer.height;
cmd2.pixel_format = drm_buffer.drm_format;
cmd2.flags = DRM_MODE_FB_MODIFIERS;
fill(begin(cmd2.handles), begin(cmd2.handles) + drm_buffer.num_planes, gem_handle);
copy(begin(drm_buffer.stride), end(drm_buffer.stride), begin(cmd2.pitches));
copy(begin(drm_buffer.offset), end(drm_buffer.offset), begin(cmd2.offsets));
fill(begin(cmd2.modifier), begin(cmd2.modifier) + drm_buffer.num_planes,
drm_buffer.drm_format_modifier);
if ((ret = drmIoctl(dev_fd_, DRM_IOCTL_MODE_ADDFB2, &cmd2))) {
DRM_LOGE("DRM_IOCTL_MODE_ADDFB2 failed with error %d", ret);
} else {
*fb_id = cmd2.fb_id;
}
struct drm_gem_close gem_close = {};
gem_close.handle = gem_handle;
int ret1 = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
if (ret1) {
DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret1);
return ret1;
}
return ret;
}
int DRMMaster::RemoveFbId(uint32_t fb_id) {
int ret = 0;
#ifdef DRM_IOCTL_MSM_RMFB2
ret = drmIoctl(dev_fd_, DRM_IOCTL_MSM_RMFB2, &fb_id);
if (ret) {
DRM_LOGE("drmIoctl::DRM_IOCTL_MSM_RMFB2 failed for fb_id %d with error %d", fb_id, errno);
}
#else
ret = drmModeRmFB(dev_fd_, fb_id);
if (ret) {
DRM_LOGE("drmModeRmFB failed for fb_id %d with error %d", fb_id, ret);
}
#endif
return ret;
}
} // namespace drm_utils
|
