UMP_KERNEL_API_EXPORT ump_dd_status_code ump_dd_meminfo_set(ump_dd_handle memh, void* args)
{
ump_dd_mem * mem;
ump_secure_id secure_id;
DEBUG_ASSERT_POINTER(memh);
secure_id = ump_dd_secure_id_get(memh);
_mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
if (0 == ump_descriptor_mapping_get(device.secure_id_map, (int)secure_id, (void**)&mem))
{
device.backend->set(mem, args);
}
else
{
_mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
DBG_MSG(1, ("Failed to look up mapping in ump_meminfo_set(). ID: %u\n", (ump_secure_id)secure_id));
return UMP_DD_INVALID;
}
_mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
return UMP_DD_SUCCESS;
}
/// マップしたファイルのサイズを返します。マップに失敗したか、 map() を実行していなかった場合は 0 を返します。このときデバッグビルドならばアサートします。
int getFilesize()
{
DEBUG_ASSERT(file_descriptor_ != -1);
DEBUG_ASSERT_POINTER(buffer_);
return filesize_;
}
_mali_osk_errcode_t _ump_ukk_allocate( _ump_uk_allocate_s *user_interaction )
{
ump_session_data * session_data = NULL;
ump_dd_mem *new_allocation = NULL;
ump_session_memory_list_element * session_memory_element = NULL;
int map_id;
DEBUG_ASSERT_POINTER( user_interaction );
DEBUG_ASSERT_POINTER( user_interaction->ctx );
session_data = (ump_session_data *) user_interaction->ctx;
session_memory_element = _mali_osk_calloc( 1, sizeof(ump_session_memory_list_element));
if (NULL == session_memory_element)
{
DBG_MSG(1, ("Failed to allocate ump_session_memory_list_element in ump_ioctl_allocate()\n"));
return _MALI_OSK_ERR_NOMEM;
}
new_allocation = _mali_osk_calloc( 1, sizeof(ump_dd_mem));
if (NULL==new_allocation)
{
_mali_osk_free(session_memory_element);
DBG_MSG(1, ("Failed to allocate ump_dd_mem in _ump_ukk_allocate()\n"));
return _MALI_OSK_ERR_NOMEM;
}
/* Create a secure ID for this allocation */
_mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
map_id = ump_descriptor_mapping_allocate_mapping(device.secure_id_map, (void*)new_allocation);
if (map_id < 0)
{
_mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
_mali_osk_free(session_memory_element);
_mali_osk_free(new_allocation);
DBG_MSG(1, ("Failed to allocate secure ID in ump_ioctl_allocate()\n"));
return - _MALI_OSK_ERR_INVALID_FUNC;
}
/* Initialize the part of the new_allocation that we know so for */
new_allocation->secure_id = (ump_secure_id)map_id;
_mali_osk_atomic_init(&new_allocation->ref_count,1);
if ( 0==(UMP_REF_DRV_UK_CONSTRAINT_USE_CACHE & user_interaction->constraints) )
new_allocation->is_cached = 0;
else new_allocation->is_cached = 1;
/* special case a size of 0, we should try to emulate what malloc does in this case, which is to return a valid pointer that must be freed, but can't be dereferences */
if (0 == user_interaction->size)
{
user_interaction->size = 1; /* emulate by actually allocating the minimum block size */
}
new_allocation->size_bytes = UMP_SIZE_ALIGN(user_interaction->size); /* Page align the size */
new_allocation->lock_usage = UMP_NOT_LOCKED;
/* Now, ask the active memory backend to do the actual memory allocation */
if (!device.backend->allocate( device.backend->ctx, new_allocation ) )
{
DBG_MSG(3, ("OOM: No more UMP memory left. Failed to allocate memory in ump_ioctl_allocate(). Size: %lu, requested size: %lu\n", new_allocation->size_bytes, (unsigned long)user_interaction->size));
ump_descriptor_mapping_free(device.secure_id_map, map_id);
_mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
_mali_osk_free(new_allocation);
_mali_osk_free(session_memory_element);
return _MALI_OSK_ERR_INVALID_FUNC;
}
new_allocation->hw_device = _UMP_UK_USED_BY_CPU;
new_allocation->ctx = device.backend->ctx;
new_allocation->release_func = device.backend->release;
_mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
/* Initialize the session_memory_element, and add it to the session object */
session_memory_element->mem = new_allocation;
_mali_osk_lock_wait(session_data->lock, _MALI_OSK_LOCKMODE_RW);
_mali_osk_list_add(&(session_memory_element->list), &(session_data->list_head_session_memory_list));
_mali_osk_lock_signal(session_data->lock, _MALI_OSK_LOCKMODE_RW);
user_interaction->secure_id = new_allocation->secure_id;
user_interaction->size = new_allocation->size_bytes;
DBG_MSG(3, ("UMP memory allocated. ID: %u, size: %lu\n", new_allocation->secure_id, new_allocation->size_bytes));
return _MALI_OSK_ERR_OK;
}
/// マップしたメモリ領域へのポインタを返します。マップに失敗したか、 map() を実行していなかった場合は 0 を返します。このときデバッグビルドならばアサートします。
void *getBuffer()
{
DEBUG_ASSERT(file_descriptor_ != -1);
DEBUG_ASSERT_POINTER(buffer_);
return buffer_;
}