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/*
* Copyright (C) 2013 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 <ump/ump_ref_drv.h>
static int s_ump_is_open = 0;
int gralloc_backend_register(private_handle_t* hnd)
{
int retval = -EINVAL;
switch (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_UMP |
private_handle_t::PRIV_FLAGS_USES_ION))
{
case private_handle_t::PRIV_FLAGS_USES_UMP:
if (!s_ump_is_open)
{
ump_result res = ump_open(); // MJOLL-4012: UMP implementation needs a ump_close() for each ump_open
if (res != UMP_OK)
{
AERR("Failed to open UMP library with res=%d", res);
}
s_ump_is_open = 1;
}
if (s_ump_is_open)
{
hnd->ump_mem_handle = ump_handle_create_from_secure_id(hnd->ump_id);
if (UMP_INVALID_MEMORY_HANDLE != (ump_handle)hnd->ump_mem_handle)
{
hnd->base = ump_mapped_pointer_get(hnd->ump_mem_handle);
if (0 != hnd->base)
{
hnd->lockState = private_handle_t::LOCK_STATE_MAPPED;
hnd->writeOwner = 0;
hnd->lockState = 0;
return 0;
}
else
{
AERR("Failed to map UMP handle %p", hnd->ump_mem_handle );
}
ump_reference_release((ump_handle)hnd->ump_mem_handle);
}
else
{
AERR("Failed to create UMP handle %p", hnd->ump_mem_handle );
}
}
break;
case private_handle_t::PRIV_FLAGS_USES_ION:
AERR("Gralloc does not support DMA_BUF. Unable to map memory for handle %p", hnd );
break;
}
return retval;
}
void gralloc_backend_unregister(private_handle_t* hnd)
{
switch (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_UMP |
private_handle_t::PRIV_FLAGS_USES_ION))
{
case private_handle_t::PRIV_FLAGS_USES_UMP:
ump_mapped_pointer_release((ump_handle)hnd->ump_mem_handle);
hnd->base = 0;
ump_reference_release((ump_handle)hnd->ump_mem_handle);
hnd->ump_mem_handle = UMP_INVALID_MEMORY_HANDLE;
break;
case private_handle_t::PRIV_FLAGS_USES_ION:
AERR( "Can't unregister DMA_BUF buffer for hnd %p. Not supported", hnd );
break;
}
}
void gralloc_backend_sync(private_handle_t* hnd)
{
switch (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_UMP |
private_handle_t::PRIV_FLAGS_USES_ION))
{
case private_handle_t::PRIV_FLAGS_USES_UMP:
ump_cpu_msync_now((ump_handle)hnd->ump_mem_handle, UMP_MSYNC_CLEAN_AND_INVALIDATE, (void*)hnd->base, hnd->size);
break;
case private_handle_t::PRIV_FLAGS_USES_ION:
AERR( "Buffer %p is DMA_BUF type but it is not supported", hnd );
break;
}
}
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