auto import from //depot/cupcake/@135843
diff --git a/opengl/libs/EGL/gpu.cpp b/opengl/libs/EGL/gpu.cpp
new file mode 100644
index 0000000..3f9fd63
--- /dev/null
+++ b/opengl/libs/EGL/gpu.cpp
@@ -0,0 +1,212 @@
+/*
+ ** Copyright 2007, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ ** http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#define LOG_TAG "EGL"
+
+#include <ctype.h>
+#include <string.h>
+#include <errno.h>
+
+#include <sys/ioctl.h>
+
+#if HAVE_ANDROID_OS
+#include <linux/android_pmem.h>
+#endif
+
+#include <cutils/log.h>
+#include <cutils/properties.h>
+
+#include <utils/IMemory.h>
+#include <utils/threads.h>
+#include <utils/IServiceManager.h>
+#include <utils/IPCThreadState.h>
+#include <utils/Parcel.h>
+
+#include <ui/EGLDisplaySurface.h>
+#include <ui/ISurfaceComposer.h>
+
+#include "hooks.h"
+#include "egl_impl.h"
+
+// ----------------------------------------------------------------------------
+namespace android {
+// ----------------------------------------------------------------------------
+
+/*
+ * we provide our own allocators for the GPU regions, these
+ * allocators go through surfaceflinger
+ */
+
+static Mutex gRegionsLock;
+static request_gpu_t gRegions;
+static sp<ISurfaceComposer> gSurfaceManager;
+ISurfaceComposer* GLES_localSurfaceManager = 0;
+
+extern egl_connection_t gEGLImpl[2];
+
+const sp<ISurfaceComposer>& getSurfaceFlinger()
+{
+ Mutex::Autolock _l(gRegionsLock);
+
+ /*
+ * There is a little bit of voodoo magic here. We want to access
+ * surfaceflinger for allocating GPU regions, however, when we are
+ * running as part of surfaceflinger, we want to bypass the
+ * service manager because surfaceflinger might not be registered yet.
+ * SurfaceFlinger will populate "GLES_localSurfaceManager" with its
+ * own address, so we can just use that.
+ */
+ if (gSurfaceManager == 0) {
+ if (GLES_localSurfaceManager) {
+ // we're running in SurfaceFlinger's context
+ gSurfaceManager = GLES_localSurfaceManager;
+ } else {
+ // we're a remote process or not part of surfaceflinger,
+ // go through the service manager
+ sp<IServiceManager> sm = defaultServiceManager();
+ if (sm != NULL) {
+ sp<IBinder> binder = sm->getService(String16("SurfaceFlinger"));
+ gSurfaceManager = interface_cast<ISurfaceComposer>(binder);
+ }
+ }
+ }
+ return gSurfaceManager;
+}
+
+class GPURevokeRequester : public BnGPUCallback
+{
+public:
+ virtual void gpuLost() {
+ LOGD("CONTEXT_LOST: Releasing GPU upon request from SurfaceFlinger.");
+ gEGLImpl[IMPL_HARDWARE].hooks = &gHooks[IMPL_CONTEXT_LOST];
+ }
+};
+
+static sp<GPURevokeRequester> gRevokerCallback;
+
+
+request_gpu_t* gpu_acquire(void* user)
+{
+ sp<ISurfaceComposer> server( getSurfaceFlinger() );
+
+ Mutex::Autolock _l(gRegionsLock);
+ if (server == NULL) {
+ return 0;
+ }
+
+ ISurfaceComposer::gpu_info_t info;
+
+ if (gRevokerCallback == 0)
+ gRevokerCallback = new GPURevokeRequester();
+
+ status_t err = server->requestGPU(gRevokerCallback, &info);
+ if (err != NO_ERROR) {
+ LOGD("requestGPU returned %d", err);
+ return 0;
+ }
+
+ bool failed = false;
+ request_gpu_t* gpu = &gRegions;
+ memset(gpu, 0, sizeof(*gpu));
+
+ if (info.regs != 0) {
+ sp<IMemoryHeap> heap(info.regs->getMemory());
+ if (heap != 0) {
+ int fd = heap->heapID();
+ gpu->regs.fd = fd;
+ gpu->regs.base = info.regs->pointer();
+ gpu->regs.size = info.regs->size();
+ gpu->regs.user = info.regs.get();
+#if HAVE_ANDROID_OS
+ struct pmem_region region;
+ if (ioctl(fd, PMEM_GET_PHYS, ®ion) >= 0)
+ gpu->regs.phys = (void*)region.offset;
+#endif
+ info.regs->incStrong(gpu);
+ } else {
+ LOGE("GPU register handle %p is invalid!", info.regs.get());
+ failed = true;
+ }
+ }
+
+ for (size_t i=0 ; i<info.count && !failed ; i++) {
+ sp<IMemory>& region(info.regions[i].region);
+ if (region != 0) {
+ sp<IMemoryHeap> heap(region->getMemory());
+ if (heap != 0) {
+ const int fd = heap->heapID();
+ gpu->gpu[i].fd = fd;
+ gpu->gpu[i].base = region->pointer();
+ gpu->gpu[i].size = region->size();
+ gpu->gpu[i].user = region.get();
+ gpu->gpu[i].offset = info.regions[i].reserved;
+#if HAVE_ANDROID_OS
+ struct pmem_region reg;
+ if (ioctl(fd, PMEM_GET_PHYS, ®) >= 0)
+ gpu->gpu[i].phys = (void*)reg.offset;
+#endif
+ region->incStrong(gpu);
+ } else {
+ LOGE("GPU region handle [%d, %p] is invalid!", i, region.get());
+ failed = true;
+ }
+ }
+ }
+
+ if (failed) {
+ // something went wrong, clean up everything!
+ if (gpu->regs.user) {
+ static_cast<IMemory*>(gpu->regs.user)->decStrong(gpu);
+ for (size_t i=0 ; i<info.count ; i++) {
+ if (gpu->gpu[i].user) {
+ static_cast<IMemory*>(gpu->gpu[i].user)->decStrong(gpu);
+ }
+ }
+ }
+ }
+
+ gpu->count = info.count;
+ return gpu;
+}
+
+int gpu_release(void*, request_gpu_t* gpu)
+{
+ sp<IMemory> regs;
+
+ { // scope for lock
+ Mutex::Autolock _l(gRegionsLock);
+ regs = static_cast<IMemory*>(gpu->regs.user);
+ gpu->regs.user = 0;
+ if (regs != 0) regs->decStrong(gpu);
+
+ for (int i=0 ; i<gpu->count ; i++) {
+ sp<IMemory> r(static_cast<IMemory*>(gpu->gpu[i].user));
+ gpu->gpu[i].user = 0;
+ if (r != 0) r->decStrong(gpu);
+ }
+ }
+
+ // there is a special transaction to relinquish the GPU
+ // (it will happen automatically anyway if we don't do this)
+ Parcel data, reply;
+ // NOTE: this transaction does not require an interface token
+ regs->asBinder()->transact(1000, data, &reply);
+ return 1;
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+// ----------------------------------------------------------------------------