/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
*
* 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.
*/
#include <limits.h>
#include <errno.h>
#include <pthread.h>
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/ashmem.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <cutils/ashmem.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include "gralloc_priv.h"
#include "gr.h"
#include "alloc_controller.h"
#include "memalloc.h"
#include <qdMetaData.h>
using namespace gralloc;
/*****************************************************************************/
// Return the type of allocator -
// these are used for mapping/unmapping
static IMemAlloc* getAllocator(int flags)
{
IMemAlloc* memalloc;
IAllocController* alloc_ctrl = IAllocController::getInstance();
memalloc = alloc_ctrl->getAllocator(flags);
return memalloc;
}
static int gralloc_map(gralloc_module_t const* module,
buffer_handle_t handle)
{
private_handle_t* hnd = (private_handle_t*)handle;
void *mappedAddress;
if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) &&
!(hnd->flags & private_handle_t::PRIV_FLAGS_SECURE_BUFFER)) {
size_t size = hnd->size;
IMemAlloc* memalloc = getAllocator(hnd->flags) ;
int err = memalloc->map_buffer(&mappedAddress, size,
hnd->offset, hnd->fd);
if(err || mappedAddress == MAP_FAILED) {
ALOGE("Could not mmap handle %p, fd=%d (%s)",
handle, hnd->fd, strerror(errno));
hnd->base = 0;
return -errno;
}
hnd->base = intptr_t(mappedAddress) + hnd->offset;
mappedAddress = MAP_FAILED;
size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
err = memalloc->map_buffer(&mappedAddress, size,
hnd->offset_metadata, hnd->fd_metadata);
if(err || mappedAddress == MAP_FAILED) {
ALOGE("Could not mmap handle %p, fd=%d (%s)",
handle, hnd->fd_metadata, strerror(errno));
hnd->base_metadata = 0;
return -errno;
}
hnd->base_metadata = intptr_t(mappedAddress) + hnd->offset_metadata;
}
return 0;
}
static int gralloc_unmap(gralloc_module_t const* module,
buffer_handle_t handle)
{
private_handle_t* hnd = (private_handle_t*)handle;
if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)) {
int err = -EINVAL;
void* base = (void*)hnd->base;
size_t size = hnd->size;
IMemAlloc* memalloc = getAllocator(hnd->flags) ;
if(memalloc != NULL) {
err = memalloc->unmap_buffer(base, size, hnd->offset);
if (err) {
ALOGE("Could not unmap memory at address %p", base);
}
base = (void*)hnd->base_metadata;
size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
err = memalloc->unmap_buffer(base, size, hnd->offset_metadata);
if (err) {
ALOGE("Could not unmap memory at address %p", base);
}
}
}
/* need to initialize the pointer to NULL otherwise unmapping for that
* buffer happens twice which leads to crash */
hnd->base = 0;
hnd->base_metadata = 0;
return 0;
}
/*****************************************************************************/
static pthread_mutex_t sMapLock = PTHREAD_MUTEX_INITIALIZER;
/*****************************************************************************/
int gralloc_register_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
// In this implementation, we don't need to do anything here
/* NOTE: we need to initialize the buffer as not mapped/not locked
* because it shouldn't when this function is called the first time
* in a new process. Ideally these flags shouldn't be part of the
* handle, but instead maintained in the kernel or at least
* out-of-line
*/
private_handle_t* hnd = (private_handle_t*)handle;
hnd->base = 0;
hnd->base_metadata = 0;
int err = gralloc_map(module, handle);
if (err) {
ALOGE("%s: gralloc_map failed", __FUNCTION__);
return err;
}
return 0;
}
int gralloc_unregister_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
/*
* If the buffer has been mapped during a lock operation, it's time
* to un-map it. It's an error to be here with a locked buffer.
* NOTE: the framebuffer is handled differently and is never unmapped.
*/
private_handle_t* hnd = (private_handle_t*)handle;
if (hnd->base != 0) {
gralloc_unmap(module, handle);
}
hnd->base = 0;
hnd->base_metadata = 0;
return 0;
}
int terminateBuffer(gralloc_module_t const* module,
private_handle_t* hnd)
{
/*
* If the buffer has been mapped during a lock operation, it's time
* to un-map it. It's an error to be here with a locked buffer.
*/
if (hnd->base != 0) {
// this buffer was mapped, unmap it now
if (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_PMEM |
private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP |
private_handle_t::PRIV_FLAGS_USES_ASHMEM |
private_handle_t::PRIV_FLAGS_USES_ION)) {
gralloc_unmap(module, hnd);
} else {
ALOGE("terminateBuffer: unmapping a non pmem/ashmem buffer flags = 0x%x",
hnd->flags);
gralloc_unmap(module, hnd);
}
}
return 0;
}
static int gralloc_map_and_invalidate (gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
int err = 0;
private_handle_t* hnd = (private_handle_t*)handle;
if (usage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) {
if (hnd->base == 0) {
// we need to map for real
pthread_mutex_t* const lock = &sMapLock;
pthread_mutex_lock(lock);
err = gralloc_map(module, handle);
pthread_mutex_unlock(lock);
}
//Invalidate if reading in software. No need to do this for the metadata
//buffer as it is only read/written in software.
IMemAlloc* memalloc = getAllocator(hnd->flags) ;
err = memalloc->clean_buffer((void*)hnd->base,
hnd->size, hnd->offset, hnd->fd,
CACHE_INVALIDATE);
if ((usage & GRALLOC_USAGE_SW_WRITE_MASK) &&
!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)) {
// Mark the buffer to be flushed after cpu read/write
hnd->flags |= private_handle_t::PRIV_FLAGS_NEEDS_FLUSH;
}
} else {
hnd->flags |= private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH;
}
return err;
}
int gralloc_lock(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
void** vaddr)
{
private_handle_t* hnd = (private_handle_t*)handle;
int err = gralloc_map_and_invalidate(module, handle, usage, l, t, w, h);
if(!err)
*vaddr = (void*)hnd->base;
return err;
}
int gralloc_lock_ycbcr(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
struct android_ycbcr *ycbcr)
{
private_handle_t* hnd = (private_handle_t*)handle;
int err = gralloc_map_and_invalidate(module, handle, usage, l, t, w, h);
int ystride, cstride;
if(!err) {
//hnd->format holds our implementation defined format
//HAL_PIXEL_FORMAT_YCrCb_420_SP is the only one set right now.
switch (hnd->format) {
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
ystride = ALIGN(hnd->width, 16);
ycbcr->y = (void*)hnd->base;
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height + 1);
ycbcr->ystride = ystride;
ycbcr->cstride = ystride;
ycbcr->chroma_step = 2;
memset(ycbcr->reserved, 0, sizeof(ycbcr->reserved));
break;
// YCbCr_420_SP
case HAL_PIXEL_FORMAT_NV12:
ystride = ALIGN(hnd->width, 16);
ycbcr->y = (void*)hnd->base;
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height + 1);
ycbcr->ystride = ystride;
ycbcr->cstride = ystride;
ycbcr->chroma_step = 2;
memset(ycbcr->reserved, 0, sizeof(ycbcr->reserved));
break;
// YCrCb_420_P
case HAL_PIXEL_FORMAT_YV12:
ystride = ALIGN(hnd->width, 16);
cstride = ALIGN(ystride / 2, 16);
ycbcr->y = (void*)hnd->base;
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height
+ cstride * hnd->height / 2);
ycbcr->ystride = ystride;
ycbcr->cstride = cstride;
ycbcr->chroma_step = 1;
memset(ycbcr->reserved, 0, sizeof(ycbcr->reserved));
break;
default:
ALOGD("%s: Invalid format passed: 0x%x", __FUNCTION__,
hnd->format);
err = -EINVAL;
}
}
return err;
}
int gralloc_unlock(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
int err = 0;
private_handle_t* hnd = (private_handle_t*)handle;
IMemAlloc* memalloc = getAllocator(hnd->flags);
if (hnd->flags & private_handle_t::PRIV_FLAGS_NEEDS_FLUSH) {
err = memalloc->clean_buffer((void*)hnd->base,
hnd->size, hnd->offset, hnd->fd,
CACHE_CLEAN_AND_INVALIDATE);
hnd->flags &= ~private_handle_t::PRIV_FLAGS_NEEDS_FLUSH;
} else if(hnd->flags & private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH) {
hnd->flags &= ~private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH;
} else {
//Probably a round about way to do this, but this avoids adding new
//flags
err = memalloc->clean_buffer((void*)hnd->base,
hnd->size, hnd->offset, hnd->fd,
CACHE_INVALIDATE);
}
return err;
}
/*****************************************************************************/
int gralloc_perform(struct gralloc_module_t const* module,
int operation, ... )
{
int res = -EINVAL;
va_list args;
va_start(args, operation);
switch (operation) {
case GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER:
{
int fd = va_arg(args, int);
size_t size = va_arg(args, size_t);
size_t offset = va_arg(args, size_t);
void* base = va_arg(args, void*);
int width = va_arg(args, int);
int height = va_arg(args, int);
int format = va_arg(args, int);
native_handle_t** handle = va_arg(args, native_handle_t**);
int memoryFlags __attribute__((__unused__)) = va_arg(args, int);
private_handle_t* hnd = (private_handle_t*)native_handle_create(
private_handle_t::sNumFds, private_handle_t::sNumInts);
hnd->magic = private_handle_t::sMagic;
hnd->fd = fd;
hnd->flags = private_handle_t::PRIV_FLAGS_USES_ION;
hnd->size = size;
hnd->offset = offset;
hnd->base = intptr_t(base) + offset;
hnd->gpuaddr = 0;
hnd->width = width;
hnd->height = height;
hnd->format = format;
*handle = (native_handle_t *)hnd;
res = 0;
break;
}
#ifdef QCOM_BSP
case GRALLOC_MODULE_PERFORM_UPDATE_BUFFER_GEOMETRY:
{
int width = va_arg(args, int);
int height = va_arg(args, int);
int format = va_arg(args, int);
private_handle_t* hnd = va_arg(args, private_handle_t*);
if (private_handle_t::validate(hnd)) {
return res;
}
hnd->width = width;
hnd->height = height;
hnd->format = format;
res = 0;
}
break;
#endif
case GRALLOC_MODULE_PERFORM_GET_STRIDE:
{
int width = va_arg(args, int);
int format = va_arg(args, int);
int *stride = va_arg(args, int *);
*stride = AdrenoMemInfo::getInstance().getStride(width, format);
res = 0;
} break;
case GRALLOC_MODULE_PERFORM_GET_CUSTOM_STRIDE_FROM_HANDLE:
{
private_handle_t* hnd = va_arg(args, private_handle_t*);
int *stride = va_arg(args, int *);
if (private_handle_t::validate(hnd)) {
return res;
}
MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
if(metadata && metadata->operation & UPDATE_BUFFER_GEOMETRY) {
*stride = metadata->bufferDim.sliceWidth;
} else {
*stride = hnd->width;
}
res = 0;
} break;
default:
break;
}
va_end(args);
return res;
}