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android_device_htc_click/libgralloc/gralloc.cpp
calimochoazucarado c76980ded8 Syncro with arco's work
2011-01-11 21:34:14 +01:00

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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.
*/
#include <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <cutils/ashmem.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include <linux/msm_hw3d.h>
#include <linux/android_pmem.h>
#include "gralloc_priv.h"
#include "allocator.h"
/*****************************************************************************/
// NOTE: must be the same than in oem.h
#define ALLOCATORREGION_RESERVED_SIZE (1200<<10)
#define FB_ARENA HW3D_EBI
static SimpleBestFitAllocator sAllocator;
static SimpleBestFitAllocator sAllocatorGPU(ALLOCATORREGION_RESERVED_SIZE);
/*****************************************************************************/
struct gralloc_context_t {
alloc_device_t device;
/* our private data here */
};
static int gralloc_alloc_buffer(alloc_device_t* dev,
size_t size, int usage, buffer_handle_t* pHandle);
/*****************************************************************************/
int fb_device_open(const hw_module_t* module, const char* name,
hw_device_t** device);
static int gralloc_device_open(const hw_module_t* module, const char* name,
hw_device_t** device);
extern int gralloc_lock(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
void** vaddr);
extern int gralloc_unlock(gralloc_module_t const* module,
buffer_handle_t handle);
extern int gralloc_register_buffer(gralloc_module_t const* module,
buffer_handle_t handle);
extern int gralloc_unregister_buffer(gralloc_module_t const* module,
buffer_handle_t handle);
extern int gralloc_perform(struct gralloc_module_t const* module,
int operation, ... );
/*****************************************************************************/
static struct hw_module_methods_t gralloc_module_methods = {
open: gralloc_device_open
};
struct private_module_t HAL_MODULE_INFO_SYM = {
base: {
common: {
tag: HARDWARE_MODULE_TAG,
version_major: 1,
version_minor: 0,
id: GRALLOC_HARDWARE_MODULE_ID,
name: "Graphics Memory Allocator Module",
author: "The Android Open Source Project",
methods: &gralloc_module_methods
},
registerBuffer: gralloc_register_buffer,
unregisterBuffer: gralloc_unregister_buffer,
lock: gralloc_lock,
unlock: gralloc_unlock,
perform: gralloc_perform,
},
framebuffer: 0,
flags: 0,
numBuffers: 0,
bufferMask: 0,
lock: PTHREAD_MUTEX_INITIALIZER,
currentBuffer: 0,
pmem_master: -1,
pmem_master_base: 0,
master_phys: 0,
gpu: -1,
gpu_base: 0,
fb_map_offset: 0
};
/*****************************************************************************/
static int gralloc_alloc_framebuffer_locked(alloc_device_t* dev,
size_t size, int usage, buffer_handle_t* pHandle)
{
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
// allocate the framebuffer
if (m->framebuffer == NULL) {
// initialize the framebuffer, the framebuffer is mapped once
// and forever.
int err = mapFrameBufferLocked(m);
if (err < 0) {
return err;
}
}
const uint32_t bufferMask = m->bufferMask;
const uint32_t numBuffers = m->numBuffers;
const size_t bufferSize = m->finfo.line_length * m->info.yres;
if (numBuffers == 1) {
// If we have only one buffer, we never use page-flipping. Instead,
// we return a regular buffer which will be memcpy'ed to the main
// screen when post is called.
int newUsage = (usage & ~GRALLOC_USAGE_HW_FB) | GRALLOC_USAGE_HW_2D;
return gralloc_alloc_buffer(dev, bufferSize, newUsage, pHandle);
}
if (bufferMask >= ((1LU<<numBuffers)-1)) {
// We ran out of buffers.
return -ENOMEM;
}
// create a "fake" handles for it
intptr_t vaddr = intptr_t(m->framebuffer->base);
private_handle_t* hnd = new private_handle_t(dup(m->framebuffer->fd), size,
private_handle_t::PRIV_FLAGS_USES_PMEM |
private_handle_t::PRIV_FLAGS_FRAMEBUFFER);
// find a free slot
for (uint32_t i=0 ; i<numBuffers ; i++) {
if ((bufferMask & (1LU<<i)) == 0) {
m->bufferMask |= (1LU<<i);
break;
}
vaddr += bufferSize;
}
hnd->base = vaddr;
hnd->offset = vaddr - intptr_t(m->framebuffer->base);
*pHandle = hnd;
return 0;
}
static int gralloc_alloc_framebuffer(alloc_device_t* dev,
size_t size, int usage, buffer_handle_t* pHandle)
{
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
pthread_mutex_lock(&m->lock);
int err = gralloc_alloc_framebuffer_locked(dev, size, usage, pHandle);
pthread_mutex_unlock(&m->lock);
return err;
}
static int init_pmem_area_locked(private_module_t* m)
{
int err = 0;
int master_fd = open("/dev/pmem", O_RDWR, 0);
if (master_fd >= 0) {
size_t size;
pmem_region region;
if (ioctl(master_fd, PMEM_GET_TOTAL_SIZE, &region) < 0) {
LOGE("PMEM_GET_TOTAL_SIZE failed, limp mode");
size = 8<<20; // 8 MiB
} else {
size = region.len;
}
sAllocator.setSize(size);
void* base = mmap(0, size,
PROT_READ|PROT_WRITE, MAP_SHARED, master_fd, 0);
if (base == MAP_FAILED) {
err = -errno;
base = 0;
close(master_fd);
master_fd = -1;
}
m->pmem_master = master_fd;
m->pmem_master_base = base;
} else {
err = -errno;
}
return err;
}
static int init_pmem_area(private_module_t* m)
{
pthread_mutex_lock(&m->lock);
int err = m->pmem_master;
if (err == -1) {
// first time, try to initialize pmem
err = init_pmem_area_locked(m);
if (err) {
m->pmem_master = err;
}
} else if (err < 0) {
// pmem couldn't be initialized, never use it
} else {
// pmem OK
err = 0;
}
pthread_mutex_unlock(&m->lock);
return err;
}
static int init_gpu_area_locked(private_module_t* m)
{
int err = 0;
int gpu = open("/dev/msm_hw3dm", O_RDWR, 0);
LOGE_IF(gpu<0, "could not open hw3dm (%s)", strerror(errno));
if (gpu >= 0) {
struct hw3d_region regions[HW3D_NUM_REGIONS];
if (ioctl(gpu, HW3D_GET_REGIONS, regions) < 0) {
LOGE("HW3D_GET_REGIONS failed (%s)", strerror(errno));
err = -errno;
} else {
LOGD("smi: offset=%08lx, len=%08lx, phys=%p",
regions[HW3D_SMI].map_offset,
regions[HW3D_SMI].len,
regions[HW3D_SMI].phys);
LOGD("ebi: offset=%08lx, len=%08lx, phys=%p",
regions[HW3D_EBI].map_offset,
regions[HW3D_EBI].len,
regions[HW3D_EBI].phys);
LOGD("reg: offset=%08lx, len=%08lx, phys=%p",
regions[HW3D_REGS].map_offset,
regions[HW3D_REGS].len,
regions[HW3D_REGS].phys);
void* base = mmap(0, ALLOCATORREGION_RESERVED_SIZE,
PROT_READ|PROT_WRITE, MAP_SHARED,
gpu, regions[FB_ARENA].map_offset);
if (base == MAP_FAILED) {
LOGE("mmap EBI1 (%s)", strerror(errno));
err = -errno;
base = 0;
close(gpu);
gpu = -1;
}
m->fb_map_offset = regions[FB_ARENA].map_offset;
m->gpu = gpu;
m->gpu_base = base;
}
} else {
err = -errno;
m->gpu = 0;
m->gpu_base = 0;
}
return err;
}
static int init_gpu_area(private_module_t* m)
{
pthread_mutex_lock(&m->lock);
int err = m->gpu;
if (err == -1) {
// first time, try to initialize gpu
err = init_gpu_area_locked(m);
if (err) {
m->gpu = err;
}
} else if (err < 0) {
// gpu couldn't be initialized, never use it
} else {
// gpu OK
err = 0;
}
pthread_mutex_unlock(&m->lock);
return err;
}
static int gralloc_alloc_buffer(alloc_device_t* dev,
size_t size, int usage, buffer_handle_t* pHandle)
{
int err = 0;
int flags = 0;
int fd = -1;
int gpu_fd = -1;
void* base = 0;
int offset = 0;
size = roundUpToPageSize(size);
if (usage & GRALLOC_USAGE_HW_TEXTURE) {
// enable pmem in that case, so our software GL can fallback to
// the copybit module.
flags |= private_handle_t::PRIV_FLAGS_USES_PMEM;
}
if (usage & GRALLOC_USAGE_HW_2D) {
flags |= private_handle_t::PRIV_FLAGS_USES_PMEM;
}
if ((flags & private_handle_t::PRIV_FLAGS_USES_PMEM) == 0) {
try_ashmem:
fd = ashmem_create_region("gralloc-buffer", size);
if (fd < 0) {
LOGE("couldn't create ashmem (%s)", strerror(errno));
err = -errno;
}
} else if ((usage & GRALLOC_USAGE_HW_RENDER) == 0) {
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
err = init_pmem_area(m);
if (err == 0) {
// PMEM buffers are always mmapped
base = m->pmem_master_base;
offset = sAllocator.allocate(size);
if (offset < 0) {
// no more pmem memory
err = -ENOMEM;
} else {
struct pmem_region sub = { offset, size };
// now create the "sub-heap"
fd = open("/dev/pmem", O_RDWR, 0);
err = fd < 0 ? fd : 0;
// and connect to it
if (err == 0)
err = ioctl(fd, PMEM_CONNECT, m->pmem_master);
// and make it available to the client process
if (err == 0)
err = ioctl(fd, PMEM_MAP, &sub);
if (err < 0) {
err = -errno;
close(fd);
sAllocator.deallocate(offset);
fd = -1;
}
memset((char*)base + offset, 0, size);
//LOGD_IF(!err, "allocating pmem size=%d, offset=%d", size, offset);
}
} else {
if ((usage & GRALLOC_USAGE_HW_2D) == 0) {
// the caller didn't request PMEM, so we can try something else
flags &= ~private_handle_t::PRIV_FLAGS_USES_PMEM;
err = 0;
goto try_ashmem;
} else {
LOGE("couldn't open pmem (%s)", strerror(errno));
}
}
} else {
// looks like we want 3D...
flags &= ~private_handle_t::PRIV_FLAGS_USES_PMEM;
flags |= private_handle_t::PRIV_FLAGS_USES_GPU;
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
err = init_gpu_area(m);
if (err == 0) {
// GPU buffers are always mmapped
base = m->gpu_base;
// When a process holding GPU surfaces gets killed, it may take
// up to a few seconds until SurfaceFlinger is notified and can
// release the memory. So it's useful to wait a little bit here.
long sleeptime = 0;
int retry = 8; // roughly 5 seconds
do {
offset = sAllocatorGPU.allocate(size);
if (offset < 0) {
// no more pmem memory
LOGW("%d KiB allocation failed in GPU memory, retrying...",
size/1024);
err = -ENOMEM;
sleeptime += 250000;
usleep(sleeptime);
} else {
LOGD("allocating GPU size=%d, offset=%d", size, offset);
fd = open("/dev/null", O_RDONLY); // just so marshalling doesn't fail
gpu_fd = m->gpu;
memset((char*)base + offset, 0, size);
err = 0;
}
} while ((err == -ENOMEM) && (retry-- > 0));
} else {
// not enough memory, try ashmem
flags &= ~private_handle_t::PRIV_FLAGS_USES_GPU;
err = 0;
goto try_ashmem;
}
}
if (err == 0) {
private_handle_t* hnd = new private_handle_t(fd, size, flags);
if (base == NULL) {
gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>(
dev->common.module);
err = mapBuffer(module, hnd);
if (err == 0) {
*pHandle = hnd;
}
} else {
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
hnd->offset = offset;
hnd->base = int(base)+offset;
hnd->gpu_fd = gpu_fd;
hnd->map_offset = m->fb_map_offset;
*pHandle = hnd;
}
}
LOGE_IF(err, "gralloc failed err=%s", strerror(-err));
return err;
}
/*****************************************************************************/
static int gralloc_alloc(alloc_device_t* dev,
int w, int h, int format, int usage,
buffer_handle_t* pHandle, int* pStride)
{
if (!pHandle || !pStride)
return -EINVAL;
size_t size, stride;
int bpp = 0;
switch (format) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
bpp = 4;
break;
case HAL_PIXEL_FORMAT_RGB_888:
bpp = 3;
break;
case HAL_PIXEL_FORMAT_RGB_565:
case HAL_PIXEL_FORMAT_RGBA_5551:
case HAL_PIXEL_FORMAT_RGBA_4444:
bpp = 2;
break;
default:
return -EINVAL;
}
if (usage & GRALLOC_USAGE_HW_RENDER) {
/* buffers MUST be aligned to the NEXT 8 pixels multiple any other
* alignments will fail do to assumptions in the driver */
const int pixelAlignment = 8;
const int mask = pixelAlignment - 1;
stride = (w + mask) & ~mask;
size = stride * h * bpp;
} else {
const int align = 4;
size_t bpr = (w*bpp + (align-1)) & ~(align-1);
size = bpr * h;
stride = bpr / bpp;
}
int err;
if (usage & GRALLOC_USAGE_HW_FB) {
err = gralloc_alloc_framebuffer(dev, size, usage, pHandle);
} else {
err = gralloc_alloc_buffer(dev, size, usage, pHandle);
}
if (err < 0) {
return err;
}
*pStride = stride;
return 0;
}
static int gralloc_free(alloc_device_t* dev,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t const* hnd = reinterpret_cast<private_handle_t const*>(handle);
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
// free this buffer
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
const size_t bufferSize = m->finfo.line_length * m->info.yres;
int index = (hnd->base - m->framebuffer->base) / bufferSize;
m->bufferMask &= ~(1<<index);
} else {
if (hnd->flags & private_handle_t::PRIV_FLAGS_USES_PMEM) {
if (hnd->fd >= 0) {
struct pmem_region sub = { hnd->offset, hnd->size };
int err = ioctl(hnd->fd, PMEM_UNMAP, &sub);
LOGE_IF(err<0, "PMEM_UNMAP failed (%s), "
"fd=%d, sub.offset=%lu, sub.size=%lu",
strerror(errno), hnd->fd, hnd->offset, hnd->size);
if (err == 0) {
// we can't deallocate the memory in case of UNMAP failure
// because it would give that process access to someone else's
// surfaces, which would be a security breach.
sAllocator.deallocate(hnd->offset);
}
}
} else if (hnd->flags & private_handle_t::PRIV_FLAGS_USES_GPU) {
LOGD("freeing GPU buffer at %d", hnd->offset);
sAllocatorGPU.deallocate(hnd->offset);
}
gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>(
dev->common.module);
terminateBuffer(module, const_cast<private_handle_t*>(hnd));
}
close(hnd->fd);
delete hnd;
return 0;
}
/*****************************************************************************/
static int gralloc_close(struct hw_device_t *dev)
{
gralloc_context_t* ctx = reinterpret_cast<gralloc_context_t*>(dev);
if (ctx) {
/* TODO: keep a list of all buffer_handle_t created, and free them
* all here.
*/
free(ctx);
}
return 0;
}
int gralloc_device_open(const hw_module_t* module, const char* name,
hw_device_t** device)
{
int status = -EINVAL;
if (!strcmp(name, GRALLOC_HARDWARE_GPU0)) {
gralloc_context_t *dev;
dev = (gralloc_context_t*)malloc(sizeof(*dev));
/* initialize our state here */
memset(dev, 0, sizeof(*dev));
/* initialize the procs */
dev->device.common.tag = HARDWARE_DEVICE_TAG;
dev->device.common.version = 0;
dev->device.common.module = const_cast<hw_module_t*>(module);
dev->device.common.close = gralloc_close;
dev->device.alloc = gralloc_alloc;
dev->device.free = gralloc_free;
*device = &dev->device.common;
status = 0;
} else {
status = fb_device_open(module, name, device);
}
return status;
}
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