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/*
* Copyright (C) 2008 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 "SurfaceFlinger"
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <math.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <cutils/log.h>
#include <cutils/properties.h>
#include <utils/MemoryDealer.h>
#include <utils/MemoryBase.h>
#include <utils/MemoryHeapPmem.h>
#include <utils/MemoryHeapBase.h>
#include "GPUHardware/GPUHardware.h"
#include "SurfaceFlinger.h"
#include "VRamHeap.h"
#if HAVE_ANDROID_OS
#include <linux/android_pmem.h>
#endif
namespace android {
// ---------------------------------------------------------------------------
/*
* Amount of memory we reserve for surface, per client in PMEM
* (PMEM is used for 2D acceleration)
* 8 MB of address space per client should be enough.
*/
static const int PMEM_SIZE = int(8 * 1024 * 1024);
int SurfaceHeapManager::global_pmem_heap = 0;
// ---------------------------------------------------------------------------
SurfaceHeapManager::SurfaceHeapManager(const sp<SurfaceFlinger>& flinger,
size_t clientHeapSize)
: mFlinger(flinger), mClientHeapSize(clientHeapSize)
{
SurfaceHeapManager::global_pmem_heap = 1;
}
SurfaceHeapManager::~SurfaceHeapManager()
{
}
void SurfaceHeapManager::onFirstRef()
{
if (global_pmem_heap) {
const char* device = "/dev/pmem";
mPMemHeap = new PMemHeap(device, PMEM_SIZE);
if (mPMemHeap->base() == MAP_FAILED) {
mPMemHeap.clear();
global_pmem_heap = 0;
}
}
}
sp<MemoryDealer> SurfaceHeapManager::createHeap(
uint32_t flags,
pid_t client_pid,
const sp<MemoryDealer>& defaultAllocator)
{
sp<MemoryDealer> dealer;
if (flags & ISurfaceComposer::eGPU) {
// don't grant GPU memory if GPU is disabled
char value[PROPERTY_VALUE_MAX];
property_get("debug.egl.hw", value, "1");
if (atoi(value) == 0) {
flags &= ~ISurfaceComposer::eGPU;
}
}
if (flags & ISurfaceComposer::eGPU) {
// FIXME: this is msm7201A specific, where gpu surfaces may not be secure
if (!(flags & ISurfaceComposer::eSecure)) {
// if GPU doesn't work, we try eHardware
flags |= ISurfaceComposer::eHardware;
// asked for GPU memory, try that first
dealer = mFlinger->getGPU()->request(client_pid);
}
}
if (dealer == NULL) {
if (defaultAllocator != NULL)
// if a default allocator is given, use that
dealer = defaultAllocator;
}
if (dealer == NULL) {
// always try h/w accelerated memory first
if (global_pmem_heap) {
const sp<PMemHeap>& heap(mPMemHeap);
if (dealer == NULL && heap != NULL) {
dealer = new MemoryDealer(
heap->createClientHeap(),
heap->getAllocator());
}
}
}
if (dealer == NULL) {
// return the ashmem allocator (software rendering)
dealer = new MemoryDealer(mClientHeapSize, 0, "SFNativeHeap");
}
return dealer;
}
sp<SimpleBestFitAllocator> SurfaceHeapManager::getAllocator(int type) const
{
Mutex::Autolock _l(mLock);
sp<SimpleBestFitAllocator> allocator;
// this is only used for debugging
switch (type) {
case NATIVE_MEMORY_TYPE_PMEM:
if (mPMemHeap != 0) {
allocator = mPMemHeap->getAllocator();
}
break;
}
return allocator;
}
// ---------------------------------------------------------------------------
PMemHeap::PMemHeap(const char* const device, size_t size, size_t reserved)
: MemoryHeapBase(device, size)
{
//LOGD("%s, %p, mFD=%d", __PRETTY_FUNCTION__, this, heapID());
if (base() != MAP_FAILED) {
//LOGD("%s, %u bytes", device, virtualSize());
if (reserved == 0)
reserved = virtualSize();
mAllocator = new SimpleBestFitAllocator(reserved);
}
}
PMemHeap::~PMemHeap() {
//LOGD("%s, %p, mFD=%d", __PRETTY_FUNCTION__, this, heapID());
}
sp<MemoryHeapPmem> PMemHeap::createClientHeap() {
sp<MemoryHeapBase> parentHeap(this);
return new MemoryHeapPmem(parentHeap);
}
// ---------------------------------------------------------------------------
}; // namespace android
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