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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/ozone/platform/drm/host/drm_device_handle.h" | 5 #include "ui/ozone/platform/drm/host/drm_device_handle.h" |
6 | 6 |
7 #include <fcntl.h> | 7 #include <fcntl.h> |
8 #include <xf86drm.h> | 8 #include <xf86drm.h> |
9 #include <xf86drmMode.h> | 9 #include <xf86drmMode.h> |
10 | 10 |
11 #include "base/files/file_path.h" | 11 #include "base/files/file_path.h" |
12 #include "base/posix/eintr_wrapper.h" | 12 #include "base/posix/eintr_wrapper.h" |
13 #include "base/threading/thread_restrictions.h" | 13 #include "base/threading/thread_restrictions.h" |
14 | 14 |
15 namespace ui { | 15 namespace ui { |
16 | 16 |
17 namespace { | 17 namespace { |
18 | 18 |
19 bool Authenticate(int fd) { | 19 bool Authenticate(int fd) { |
20 drm_magic_t magic; | 20 drm_magic_t magic; |
21 memset(&magic, 0, sizeof(magic)); | 21 memset(&magic, 0, sizeof(magic)); |
22 // We need to make sure the DRM device has enough privilege. Use the DRM | 22 // We need to make sure the DRM device has enough privilege. Use the DRM |
23 // authentication logic to figure out if the device has enough permissions. | 23 // authentication logic to figure out if the device has enough permissions. |
24 return !drmGetMagic(fd, &magic) && !drmAuthMagic(fd, magic); | 24 return !drmGetMagic(fd, &magic) && !drmAuthMagic(fd, magic); |
25 } | 25 } |
26 | 26 |
27 } // namespace | 27 } // namespace |
28 | 28 |
29 DrmDeviceHandle::DrmDeviceHandle() { | 29 DrmDeviceHandle::DrmDeviceHandle() : is_vgem_(false) { |
30 } | 30 } |
31 | 31 |
32 DrmDeviceHandle::~DrmDeviceHandle() { | 32 DrmDeviceHandle::~DrmDeviceHandle() { |
33 if (file_.is_valid()) | 33 if (file_.is_valid()) |
34 base::ThreadRestrictions::AssertIOAllowed(); | 34 base::ThreadRestrictions::AssertIOAllowed(); |
35 } | 35 } |
36 | 36 |
37 bool DrmDeviceHandle::Initialize(const base::FilePath& path) { | 37 bool DrmDeviceHandle::Initialize(const base::FilePath& path, bool is_vgem) { |
38 CHECK(path.DirName() == base::FilePath("/dev/dri")); | 38 CHECK(path.DirName() == base::FilePath("/dev/dri")); |
39 base::ThreadRestrictions::AssertIOAllowed(); | 39 base::ThreadRestrictions::AssertIOAllowed(); |
| 40 is_vgem_ = is_vgem; |
40 bool print_warning = true; | 41 bool print_warning = true; |
41 while (true) { | 42 while (true) { |
42 file_.reset(); | 43 file_.reset(); |
43 int fd = HANDLE_EINTR(open(path.value().c_str(), O_RDWR | O_CLOEXEC)); | 44 int fd = HANDLE_EINTR(open(path.value().c_str(), O_RDWR | O_CLOEXEC)); |
44 if (fd < 0) { | 45 if (fd < 0) { |
45 PLOG(ERROR) << "Failed to open " << path.value(); | 46 PLOG(ERROR) << "Failed to open " << path.value(); |
46 return false; | 47 return false; |
47 } | 48 } |
48 | 49 |
49 file_.reset(fd); | 50 file_.reset(fd); |
| 51 if (is_vgem_) |
| 52 break; |
50 | 53 |
51 if (Authenticate(file_.get())) | 54 if (Authenticate(file_.get())) |
52 break; | 55 break; |
53 | 56 |
54 LOG_IF(WARNING, print_warning) << "Failed to authenticate " << path.value(); | 57 LOG_IF(WARNING, print_warning) << "Failed to authenticate " << path.value(); |
55 print_warning = false; | 58 print_warning = false; |
56 usleep(100000); | 59 usleep(100000); |
57 } | 60 } |
58 | 61 |
59 VLOG(1) << "Succeeded authenticating " << path.value(); | 62 VLOG(1) << "Succeeded authenticating " << path.value(); |
60 return true; | 63 return true; |
61 } | 64 } |
62 | 65 |
63 bool DrmDeviceHandle::IsValid() const { | 66 bool DrmDeviceHandle::IsValid() const { |
64 return file_.is_valid(); | 67 return file_.is_valid(); |
65 } | 68 } |
66 | 69 |
67 base::ScopedFD DrmDeviceHandle::PassFD() { | 70 base::ScopedFD DrmDeviceHandle::PassFD() { |
68 return file_.Pass(); | 71 return file_.Pass(); |
69 } | 72 } |
70 | 73 |
71 } // namespace ui | 74 } // namespace ui |
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