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/*
* Copyright (C) 2010 ARM Limited. All rights reserved.
*
* 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 <errno.h>
#include <pthread.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include "gralloc_priv.h"
#include "alloc_device.h"
#include "framebuffer_device.h"
#include "gralloc_module_allocator_specific.h"
#if MALI_AFBC_GRALLOC == 1
#include "gralloc_buffer_priv.h"
#endif
#include "format_chooser.h"
static pthread_mutex_t s_map_lock = PTHREAD_MUTEX_INITIALIZER;
static int gralloc_device_open(const hw_module_t* module, const char* name, hw_device_t** device)
{
int status = -EINVAL;
if (!strncmp(name, GRALLOC_HARDWARE_GPU0, MALI_GRALLOC_HARDWARE_MAX_STR_LEN))
{
status = alloc_device_open(module, name, device);
}
else if (!strncmp(name, GRALLOC_HARDWARE_FB0, MALI_GRALLOC_HARDWARE_MAX_STR_LEN))
{
status = framebuffer_device_open(module, name, device);
}
return status;
}
static int gralloc_register_buffer(gralloc_module_t const* module, buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
{
AERR("Registering invalid buffer %p, returning error", handle);
return -EINVAL;
}
// if this handle was created in this process, then we keep it as is.
private_handle_t* hnd = (private_handle_t*)handle;
if (hnd->pid == getpid())
{
// If the handle is created and registered in the same process this is valid,
// but it could also be that application is registering twice which is illegal.
AWAR("Registering handle %p coming from the same process: %d.", hnd, hnd->pid);
}
int retval = -EINVAL;
pthread_mutex_lock(&s_map_lock);
hnd->pid = getpid();
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)
{
AERR( "Can't register buffer %p as it is a framebuffer", handle );
}
else if (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_UMP |
private_handle_t::PRIV_FLAGS_USES_ION))
{
retval = gralloc_backend_register(hnd);
}
else
{
AERR("registering non-UMP buffer not supported. flags = %d", hnd->flags );
}
pthread_mutex_unlock(&s_map_lock);
return retval;
}
static int gralloc_unregister_buffer(gralloc_module_t const* module, buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
{
AERR("unregistering invalid buffer %p, returning error", handle);
return -EINVAL;
}
private_handle_t* hnd = (private_handle_t*)handle;
AERR_IF(hnd->lockState & private_handle_t::LOCK_STATE_READ_MASK, "[unregister] handle %p still locked (state=%08x)", hnd, hnd->lockState);
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)
{
AERR( "Can't unregister buffer %p as it is a framebuffer", handle );
}
else if (hnd->pid == getpid()) // never unmap buffers that were not created in this process
{
pthread_mutex_lock(&s_map_lock);
if (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_UMP |
private_handle_t::PRIV_FLAGS_USES_ION))
{
gralloc_backend_unregister(hnd);
}
else
{
AERR("Unregistering unknown buffer is not supported. Flags = %d", hnd->flags);
}
#if MALI_AFBC_GRALLOC == 1
/*
* Close shared attribute region file descriptor. It might seem strange to "free"
* this here since this can happen in a client process, but free here is nothing
* but unmapping and closing the duplicated file descriptor. The original ashmem
* fd instance is still open until alloc_device_free() is called. Even sharing
* of gralloc buffers within the same process should have fds dup:ed.
*/
gralloc_buffer_attr_free( hnd );
#endif
hnd->base = 0;
hnd->lockState = 0;
hnd->writeOwner = 0;
pthread_mutex_unlock(&s_map_lock);
}
else
{
AERR( "Trying to unregister buffer %p from process %d that was not created in current process: %d", hnd, hnd->pid, getpid());
}
return 0;
}
static int gralloc_lock(gralloc_module_t const* module, buffer_handle_t handle, int usage, int l, int t, int w, int h, void** vaddr)
{
if (private_handle_t::validate(handle) < 0)
{
AERR("Locking invalid buffer %p, returning error", handle );
return -EINVAL;
}
private_handle_t* hnd = (private_handle_t*)handle;
if (hnd->flags & private_handle_t::PRIV_FLAGS_USES_UMP || hnd->flags & private_handle_t::PRIV_FLAGS_USES_ION)
{
hnd->writeOwner = usage & GRALLOC_USAGE_SW_WRITE_MASK;
}
if (usage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK))
{
*vaddr = (void*)hnd->base;
}
return 0;
}
static int gralloc_unlock(gralloc_module_t const* module, buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
{
AERR( "Unlocking invalid buffer %p, returning error", handle );
return -EINVAL;
}
private_handle_t* hnd = (private_handle_t*)handle;
if (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_UMP |
private_handle_t::PRIV_FLAGS_USES_ION)
&& hnd->writeOwner)
{
gralloc_backend_sync(hnd);
}
return 0;
}
// There is one global instance of the module
static struct hw_module_methods_t gralloc_module_methods =
{
open: gralloc_device_open
};
private_module_t::private_module_t()
{
#define INIT_ZERO(obj) (memset(&(obj),0,sizeof((obj))))
base.common.tag = HARDWARE_MODULE_TAG;
base.common.version_major = 1;
base.common.version_minor = 0;
base.common.id = GRALLOC_HARDWARE_MODULE_ID;
base.common.name = "Graphics Memory Allocator Module";
base.common.author = "ARM Ltd.";
base.common.methods = &gralloc_module_methods;
base.common.dso = NULL;
INIT_ZERO(base.common.reserved);
base.registerBuffer = gralloc_register_buffer;
base.unregisterBuffer = gralloc_unregister_buffer;
base.lock = gralloc_lock;
base.unlock = gralloc_unlock;
base.perform = NULL;
INIT_ZERO(base.reserved_proc);
framebuffer = NULL;
flags = 0;
numBuffers = 0;
bufferMask = 0;
pthread_mutex_init(&(lock), NULL);
currentBuffer = NULL;
INIT_ZERO(info);
INIT_ZERO(finfo);
xdpi = 0.0f;
ydpi = 0.0f;
fps = 0.0f;
swapInterval = 1;
initialize_blk_conf();
#undef INIT_ZERO
};
/*
* HAL_MODULE_INFO_SYM will be initialized using the default constructor
* implemented above
*/
struct private_module_t HAL_MODULE_INFO_SYM;
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