295 lines
8.7 KiB
C++
295 lines
8.7 KiB
C++
/*
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* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Code Aurora Forum, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <cutils/log.h>
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#include <utils/RefBase.h>
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#include <fcntl.h>
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#include "gralloc_priv.h"
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#include "alloc_controller.h"
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#include "memalloc.h"
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#include "ionalloc.h"
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#include "pmemalloc.h"
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#include "ashmemalloc.h"
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using namespace gralloc;
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using android::sp;
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//Common functions
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static bool canFallback(int compositionType, int usage, bool triedSystem)
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{
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// Fallback to system heap when alloc fails unless
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// 1. Composition type is MDP
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// 2. Earlier alloc attempt was from system heap
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// 3. Contiguous heap requsted explicitly
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if(compositionType == MDP_COMPOSITION)
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return false;
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if(triedSystem)
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return false;
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if(usage &(GRALLOC_USAGE_PRIVATE_ADSP_HEAP|
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GRALLOC_USAGE_PRIVATE_EBI_HEAP |
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GRALLOC_USAGE_PRIVATE_SMI_HEAP))
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return false;
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//Return true by default
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return true;
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}
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sp<IAllocController> IAllocController::sController = NULL;
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sp<IAllocController> IAllocController::getInstance(bool useMasterHeap)
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{
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if(sController == NULL) {
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#ifdef USE_ION
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sController = new IonController();
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#else
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if(useMasterHeap)
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sController = new PmemAshmemController();
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else
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sController = new PmemKernelController();
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#endif
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}
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return sController;
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}
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//-------------- IonController-----------------------//
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IonController::IonController()
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{
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mIonAlloc = new IonAlloc();
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}
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int IonController::allocate(alloc_data& data, int usage,
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int compositionType)
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{
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int ionFlags = 0;
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int ret;
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//System heap cannot be uncached
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if (usage & GRALLOC_USAGE_PRIVATE_UNCACHED &&
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!(usage & GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP))
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data.uncached = true;
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else
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data.uncached = false;
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if(usage & GRALLOC_USAGE_PRIVATE_ADSP_HEAP)
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ionFlags |= 1 << ION_HEAP_ADSP_ID;
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if(usage & GRALLOC_USAGE_PRIVATE_SMI_HEAP)
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ionFlags |= 1 << ION_HEAP_SMI_ID;
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if(usage & GRALLOC_USAGE_PRIVATE_EBI_HEAP)
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ionFlags |= 1 << ION_HEAP_EBI_ID;
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if(usage & GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP)
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ionFlags |= 1 << ION_HEAP_SYSTEM_ID;
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// if no flags are set, default to
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// EBI heap, so that bypass can work
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// we can fall back to system heap if
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// we run out.
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if(!ionFlags)
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ionFlags = 1 << ION_HEAP_EBI_ID;
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data.flags = ionFlags;
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ret = mIonAlloc->alloc_buffer(data);
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// Fallback
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if(ret < 0 && canFallback(compositionType,
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usage,
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(ionFlags & ION_HEAP_SYSTEM_ID)))
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{
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LOGW("Falling back to system heap");
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data.flags = 1 << ION_HEAP_SYSTEM_ID;
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ret = mIonAlloc->alloc_buffer(data);
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}
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if(ret >= 0 )
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data.allocType = private_handle_t::PRIV_FLAGS_USES_ION;
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return ret;
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}
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sp<IMemAlloc> IonController::getAllocator(int flags)
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{
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sp<IMemAlloc> memalloc;
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if (flags & private_handle_t::PRIV_FLAGS_USES_ION) {
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memalloc = mIonAlloc;
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} else {
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LOGE("%s: Invalid flags passed: 0x%x", __FUNCTION__, flags);
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}
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return memalloc;
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}
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//-------------- PmemKernelController-----------------------//
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PmemKernelController::PmemKernelController()
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{
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mPmemAdspAlloc = new PmemKernelAlloc(DEVICE_PMEM_ADSP);
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// XXX: Right now, there is no need to maintain an instance
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// of the SMI allocator as we need it only in a few cases
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}
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PmemKernelController::~PmemKernelController()
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{
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}
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int PmemKernelController::allocate(alloc_data& data, int usage,
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int compositionType)
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{
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int ret = 0;
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bool adspFallback = false;
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// Try SMI first
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if ((usage & GRALLOC_USAGE_PRIVATE_SMI_HEAP) ||
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(usage & GRALLOC_USAGE_EXTERNAL_DISP) ||
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(usage & GRALLOC_USAGE_PROTECTED))
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{
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int tempFd = open(DEVICE_PMEM_SMIPOOL, O_RDWR, 0);
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if(tempFd > 0) {
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close(tempFd);
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sp<IMemAlloc> memalloc;
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memalloc = new PmemKernelAlloc(DEVICE_PMEM_SMIPOOL);
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ret = memalloc->alloc_buffer(data);
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if(ret >= 0)
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return ret;
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else {
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adspFallback = true;
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LOGW("Allocation from SMI failed, trying ADSP");
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}
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}
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}
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if ((usage & GRALLOC_USAGE_PRIVATE_ADSP_HEAP) || adspFallback) {
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ret = mPmemAdspAlloc->alloc_buffer(data);
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}
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return ret;
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}
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sp<IMemAlloc> PmemKernelController::getAllocator(int flags)
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{
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sp<IMemAlloc> memalloc;
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if (flags & private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP)
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memalloc = mPmemAdspAlloc;
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else {
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LOGE("%s: Invalid flags passed: 0x%x", __FUNCTION__, flags);
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memalloc = NULL;
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}
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return memalloc;
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}
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//-------------- PmemAshmmemController-----------------------//
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PmemAshmemController::PmemAshmemController()
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{
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mPmemUserspaceAlloc = new PmemUserspaceAlloc();
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mAshmemAlloc = new AshmemAlloc();
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mPmemKernelCtrl = new PmemKernelController();
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}
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PmemAshmemController::~PmemAshmemController()
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{
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}
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int PmemAshmemController::allocate(alloc_data& data, int usage,
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int compositionType)
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{
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int ret = 0;
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// Decide caching
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// Decide based on usage
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uint32_t uread = usage & GRALLOC_USAGE_SW_READ_MASK;
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uint32_t uwrite = usage & GRALLOC_USAGE_SW_WRITE_MASK;
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if (uread == GRALLOC_USAGE_SW_READ_OFTEN ||
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uwrite == GRALLOC_USAGE_SW_WRITE_OFTEN) {
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data.uncached = false;
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} else {
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data.uncached = true;
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}
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// Override if we explicitly need uncached buffers
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if (usage & GRALLOC_USAGE_PRIVATE_UNCACHED)
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data.uncached = true;
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// If ADSP or SMI is requested use the kernel controller
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if(usage & (GRALLOC_USAGE_PRIVATE_ADSP_HEAP|
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GRALLOC_USAGE_PRIVATE_SMI_HEAP)) {
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ret = mPmemKernelCtrl->allocate(data, usage, compositionType);
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if(ret < 0)
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LOGE("%s: Failed to allocate ADSP/SMI memory", __func__);
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else
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data.allocType = private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP;
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return ret;
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}
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if(usage & GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP) {
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ret = mAshmemAlloc->alloc_buffer(data);
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if(ret >= 0)
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data.allocType = private_handle_t::PRIV_FLAGS_USES_ASHMEM;
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return ret;
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}
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// if no memory specific flags are set,
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// default to EBI heap, so that bypass
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// can work. We can fall back to system
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// heap if we run out.
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ret = mPmemUserspaceAlloc->alloc_buffer(data);
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// Fallback
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if(ret >= 0 ) {
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data.allocType = private_handle_t::PRIV_FLAGS_USES_PMEM;
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} else if(ret < 0 && canFallback(compositionType, usage, false)) {
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LOGW("Falling back to ashmem");
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ret = mAshmemAlloc->alloc_buffer(data);
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if(ret >= 0)
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data.allocType = private_handle_t::PRIV_FLAGS_USES_ASHMEM;
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}
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return ret;
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}
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sp<IMemAlloc> PmemAshmemController::getAllocator(int flags)
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{
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sp<IMemAlloc> memalloc;
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if (flags & private_handle_t::PRIV_FLAGS_USES_PMEM)
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memalloc = mPmemUserspaceAlloc;
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else if (flags & private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP)
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memalloc = mPmemKernelCtrl->getAllocator(flags);
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else if (flags & private_handle_t::PRIV_FLAGS_USES_ASHMEM)
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memalloc = mAshmemAlloc;
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else {
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LOGE("%s: Invalid flags passed: 0x%x", __FUNCTION__, flags);
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memalloc = NULL;
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}
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return memalloc;
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}
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