Index: ui/ozone/platform/drm/gpu/client_native_pixmap_vgem.cc |
diff --git a/ui/ozone/platform/drm/gpu/client_native_pixmap_vgem.cc b/ui/ozone/platform/drm/gpu/client_native_pixmap_vgem.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3997ff4f0a074e426d70245e7751fc8c26375187 |
--- /dev/null |
+++ b/ui/ozone/platform/drm/gpu/client_native_pixmap_vgem.cc |
@@ -0,0 +1,104 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "ui/ozone/platform/drm/gpu/client_native_pixmap_vgem.h" |
+ |
+#include <fcntl.h> |
+#include <sys/mman.h> |
+#include <xf86drm.h> |
+ |
+#include "base/trace_event/trace_event.h" |
+ |
+#if defined(OZONE_USE_VGEM_MAP) |
reveman
2015/08/06 12:08:35
why would you be building this file if VGEM is not
dshwang
2015/08/06 13:59:17
Done. This file is compiled if only OZONE_USE_VGEM
|
+#include <vgem_drm.h> |
+#endif |
+ |
+namespace ui { |
+ |
+ClientNativePixmapVgem::ClientNativePixmapVgem( |
+ const gfx::NativePixmapHandle& handle, |
+ const base::FileDescriptor& vgem_handle, |
+ const gfx::Size& size, |
+ gfx::BufferFormat format) |
+ : vgem_bo_handle_(0), |
+ dma_buf_(handle.fd.fd), |
+ vgem_fd_(vgem_handle), |
+ size_(size), |
+ format_(format), |
+ stride_(handle.stride), |
+ mmap_ptr_(nullptr) { |
+ DCHECK(vgem_fd_.fd >= 0); |
reveman
2015/08/06 12:08:35
DCHECK_GT
dshwang
2015/08/06 13:59:17
Done.
|
+ DCHECK(dma_buf_.get() >= 0); |
reveman
2015/08/06 12:08:35
DCHECK_GT
dshwang
2015/08/06 13:59:17
Done.
|
+} |
+ |
+bool ClientNativePixmapVgem::Initialize() { |
+ DCHECK(vgem_fd_.fd); |
reveman
2015/08/06 12:08:35
why another dcheck here that is different from cto
dshwang
2015/08/06 13:59:17
Done. removed Initialize()
|
+ int ret = drmPrimeFDToHandle(vgem_fd_.fd, dma_buf_.get(), &vgem_bo_handle_); |
+ if (ret) { |
+ PLOG(ERROR) << "drmPrimeFDToHandle failed, handle:" << vgem_bo_handle_; |
+ return false; |
+ } |
+ return true; |
+} |
+ |
+ClientNativePixmapVgem::~ClientNativePixmapVgem() { |
+ if (vgem_bo_handle_) { |
reveman
2015/08/06 12:08:35
note that this would be cleaner if you removed Ini
dshwang
2015/08/06 13:59:17
Got it. Resolve it via Create(). Done.
|
+ struct drm_gem_close close; |
+ memset(&close, 0, sizeof(close)); |
reveman
2015/08/06 12:08:35
= { 0 } above instead?
dshwang
2015/08/06 13:59:17
good idea. I copied the code from linux :)
|
+ close.handle = vgem_bo_handle_; |
+ int ret = drmIoctl(vgem_fd_.fd, DRM_IOCTL_GEM_CLOSE, &close); |
+ if (ret) |
+ PLOG(ERROR) << "fail to free a vgem buffer. error:" << ret; |
+ vgem_bo_handle_ = 0; |
+ } |
+} |
+ |
+bool ClientNativePixmapVgem::Map(void** data) { |
+#if defined(OZONE_USE_VGEM_MAP) |
+ TRACE_EVENT0("gpu", "ClientNativePixmapVgem::Map"); |
+ DCHECK(!mmap_ptr_); |
+ DCHECK(vgem_bo_handle_); |
+ |
+ struct drm_mode_map_dumb mmap_arg; |
+ memset(&mmap_arg, 0, sizeof(mmap_arg)); |
+ mmap_arg.handle = vgem_bo_handle_; |
+ |
+ int ret = drmIoctl(vgem_fd_.fd, DRM_IOCTL_VGEM_MODE_MAP_DUMB, &mmap_arg); |
+ if (ret) { |
+ PLOG(ERROR) << "fail to map a vgem buffer. error:" << ret; |
+ return false; |
+ } |
+ DCHECK(mmap_arg.offset); |
+ |
+ size_t size = stride_ * size_.height(); |
+ mmap_ptr_ = mmap(nullptr, size, (PROT_READ | PROT_WRITE), MAP_SHARED, |
reveman
2015/08/06 12:08:35
can we keep it consistently mapped instead of doin
dshwang
2015/08/06 13:59:17
Good idea. It's possible at least in Intel Core ar
|
+ vgem_fd_.fd, mmap_arg.offset); |
+ DCHECK(mmap_ptr_ != MAP_FAILED); |
+ *data = mmap_ptr_; |
+ return true; |
+#else |
+ NOTREACHED(); |
+ return false; |
+#endif |
+} |
+ |
+void ClientNativePixmapVgem::Unmap() { |
+#if defined(OZONE_USE_VGEM_MAP) |
+ TRACE_EVENT0("gpu", "ClientNativePixmapVgem::Unmap"); |
+ DCHECK(mmap_ptr_); |
+ DCHECK(vgem_bo_handle_); |
+ |
+ size_t size = stride_ * size_.height(); |
+ int ret = munmap(mmap_ptr_, size); |
+ DCHECK(!ret); |
+ mmap_ptr_ = nullptr; |
+#else |
+ NOTREACHED(); |
+#endif |
+} |
+void ClientNativePixmapVgem::GetStride(int* stride) const { |
+ *stride = stride_; |
+} |
+ |
+} // namespace ui |