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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 <string.h>
#include <errno.h>
#include <pthread.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include <sys/ioctl.h>
#include "alloc_device.h"
#include "gralloc_priv.h"
#include "gralloc_helper.h"
#include "framebuffer_device.h"
#include <ump/ump.h>
#include <ump/ump_ref_drv.h>
#if GRALLOC_SIMULATE_FAILURES
#include <cutils/properties.h>
/* system property keys for controlling simulated UMP allocation failures */
#define PROP_MALI_TEST_GRALLOC_FAIL_FIRST "mali.test.gralloc.fail_first"
#define PROP_MALI_TEST_GRALLOC_FAIL_INTERVAL "mali.test.gralloc.fail_interval"
static int __ump_alloc_should_fail()
{
static unsigned int call_count = 0;
unsigned int first_fail = 0;
int fail_period = 0;
int fail = 0;
++call_count;
/* read the system properties that control failure simulation */
{
char prop_value[PROPERTY_VALUE_MAX];
if (property_get(PROP_MALI_TEST_GRALLOC_FAIL_FIRST, prop_value, "0") > 0)
{
sscanf(prop_value, "%11u", &first_fail);
}
if (property_get(PROP_MALI_TEST_GRALLOC_FAIL_INTERVAL, prop_value, "0") > 0)
{
sscanf(prop_value, "%11u", &fail_period);
}
}
/* failure simulation is enabled by setting the first_fail property to non-zero */
if (first_fail > 0)
{
LOGI("iteration %u (fail=%u, period=%u)\n", call_count, first_fail, fail_period);
fail = (call_count == first_fail) ||
(call_count > first_fail && fail_period > 0 && 0 == (call_count - first_fail) % fail_period);
if (fail)
{
AERR("failed ump_ref_drv_allocate on iteration #%d\n", call_count);
}
}
return fail;
}
#endif
int alloc_backend_alloc(alloc_device_t* dev, size_t size, int usage, buffer_handle_t* pHandle)
{
{
ump_handle ump_mem_handle;
void *cpu_ptr;
ump_secure_id ump_id;
ump_alloc_constraints constraints;
size = round_up_to_page_size(size);
if( (usage&GRALLOC_USAGE_SW_READ_MASK) == GRALLOC_USAGE_SW_READ_OFTEN )
{
constraints = UMP_REF_DRV_CONSTRAINT_USE_CACHE;
}
else
{
constraints = UMP_REF_DRV_CONSTRAINT_NONE;
}
#ifdef GRALLOC_SIMULATE_FAILURES
/* if the failure condition matches, fail this iteration */
if (__ump_alloc_should_fail())
{
ump_mem_handle = UMP_INVALID_MEMORY_HANDLE;
}
else
#endif
{
/* protected memory not supported in UMP */
if (!(usage & GRALLOC_USAGE_PROTECTED))
{
ump_mem_handle = ump_ref_drv_allocate(size, constraints);
if (UMP_INVALID_MEMORY_HANDLE != ump_mem_handle)
{
cpu_ptr = ump_mapped_pointer_get(ump_mem_handle);
if (NULL != cpu_ptr)
{
ump_id = ump_secure_id_get(ump_mem_handle);
if (UMP_INVALID_SECURE_ID != ump_id)
{
private_handle_t* hnd = new private_handle_t(private_handle_t::PRIV_FLAGS_USES_UMP,
usage,
size,
cpu_ptr,
private_handle_t::LOCK_STATE_MAPPED,
ump_id,
ump_mem_handle);
if (NULL != hnd)
{
*pHandle = hnd;
return 0;
}
else
{
AERR( "gralloc_alloc_buffer() failed to allocate handle. ump_handle = %p, ump_id = %d", ump_mem_handle, ump_id );
}
}
else
{
AERR( "gralloc_alloc_buffer() failed to retrieve valid secure id. ump_handle = %p", ump_mem_handle );
}
ump_mapped_pointer_release(ump_mem_handle);
}
else
{
AERR( "gralloc_alloc_buffer() failed to map UMP memory. ump_handle = %p", ump_mem_handle );
}
ump_reference_release(ump_mem_handle);
}
else
{
AERR( "gralloc_alloc_buffer() failed to allocate UMP memory. size:%d constraints: %d", size, constraints );
}
}
else
{
AERR( "gralloc_alloc_buffer() protected UMP memory is not supported.");
}
}
return -1;
}
}
int alloc_backend_alloc_framebuffer(private_module_t* m, private_handle_t* hnd)
{
hnd->ump_id = m->framebuffer->ump_id;
/* create a backing ump memory handle if the framebuffer is exposed as a secure ID */
if ( (int)UMP_INVALID_SECURE_ID != hnd->ump_id )
{
hnd->ump_mem_handle = ump_handle_create_from_secure_id( hnd->ump_id );
if ( UMP_INVALID_MEMORY_HANDLE == hnd->ump_mem_handle )
{
AERR("unable to create UMP handle from secure ID %i\n", hnd->ump_id);
return -1;
}
}
return 0;
}
void alloc_backend_alloc_free(private_handle_t const* hnd, private_module_t* m)
{
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)
{
if ( UMP_INVALID_MEMORY_HANDLE != hnd->ump_mem_handle )
{
ump_reference_release((ump_handle)hnd->ump_mem_handle);
}
}
else if (hnd->flags & private_handle_t::PRIV_FLAGS_USES_UMP)
{
/* Buffer might be unregistered so we need to check for invalid ump handle*/
if ( UMP_INVALID_MEMORY_HANDLE != hnd->ump_mem_handle )
{
ump_mapped_pointer_release((ump_handle)hnd->ump_mem_handle);
ump_reference_release((ump_handle)hnd->ump_mem_handle);
}
}
else if ( hnd->flags & private_handle_t::PRIV_FLAGS_USES_ION )
{
AERR( "Can't free dma_buf memory for handle:%p. Not supported.", hnd);
}
}
int alloc_backend_open(alloc_device_t *dev)
{
ump_result ump_res = ump_open();
if (UMP_OK != ump_res)
{
AERR( "UMP open failed with %d", ump_res );
return -1;
}
return 0;
}
int alloc_backend_close(struct hw_device_t *device)
{
alloc_device_t* dev = reinterpret_cast<alloc_device_t*>(device);
if (dev)
{
ump_close(); // Our UMP memory refs will be released automatically here...
}
return 0;
}
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