static mali_physical_memory_allocation_result block_allocator_allocate(void* ctx, mali_allocation_engine * engine, mali_memory_allocation * descriptor, u32* offset, mali_physical_memory_allocation * alloc_info)
{
block_allocator * info;
u32 left;
block_info * last_allocated = NULL;
mali_physical_memory_allocation_result result = MALI_MEM_ALLOC_NONE;
block_allocator_allocation *ret_allocation;
MALI_DEBUG_ASSERT_POINTER(ctx);
MALI_DEBUG_ASSERT_POINTER(descriptor);
MALI_DEBUG_ASSERT_POINTER(offset);
MALI_DEBUG_ASSERT_POINTER(alloc_info);
info = (block_allocator*)ctx;
left = descriptor->size - *offset;
MALI_DEBUG_ASSERT(0 != left);
if (_MALI_OSK_ERR_OK != _mali_osk_lock_wait(info->mutex, _MALI_OSK_LOCKMODE_RW)) return MALI_MEM_ALLOC_INTERNAL_FAILURE;
ret_allocation = _mali_osk_malloc( sizeof(block_allocator_allocation) );
if ( NULL == ret_allocation )
{
/* Failure; try another allocator by returning MALI_MEM_ALLOC_NONE */
_mali_osk_lock_signal(info->mutex, _MALI_OSK_LOCKMODE_RW);
return result;
}
ret_allocation->start_offset = *offset;
ret_allocation->mapping_length = 0;
while ((left > 0) && (info->first_free))
{
block_info * block;
u32 phys_addr;
u32 padding;
u32 current_mapping_size;
block = info->first_free;
info->first_free = info->first_free->next;
block->next = last_allocated;
last_allocated = block;
phys_addr = get_phys(info, block);
padding = *offset & (MALI_BLOCK_SIZE-1);
if (MALI_BLOCK_SIZE - padding < left)
{
current_mapping_size = MALI_BLOCK_SIZE - padding;
}
else
{
current_mapping_size = left;
}
if (_MALI_OSK_ERR_OK != mali_allocation_engine_map_physical(engine, descriptor, *offset, phys_addr + padding, info->cpu_usage_adjust, current_mapping_size))
{
MALI_DEBUG_PRINT(1, ("Mapping of physical memory failed\n"));
result = MALI_MEM_ALLOC_INTERNAL_FAILURE;
mali_allocation_engine_unmap_physical(engine, descriptor, ret_allocation->start_offset, ret_allocation->mapping_length, (_mali_osk_mem_mapregion_flags_t)0);
/* release all memory back to the pool */
while (last_allocated)
{
/* This relinks every block we've just allocated back into the free-list */
block = last_allocated->next;
last_allocated->next = info->first_free;
info->first_free = last_allocated;
last_allocated = block;
}
break;
}
*offset += current_mapping_size;
left -= current_mapping_size;
ret_allocation->mapping_length += current_mapping_size;
}
_mali_osk_lock_signal(info->mutex, _MALI_OSK_LOCKMODE_RW);
if (last_allocated)
{
if (left) result = MALI_MEM_ALLOC_PARTIAL;
else result = MALI_MEM_ALLOC_FINISHED;
/* Record all the information about this allocation */
ret_allocation->last_allocated = last_allocated;
ret_allocation->engine = engine;
ret_allocation->descriptor = descriptor;
alloc_info->ctx = info;
alloc_info->handle = ret_allocation;
alloc_info->release = block_allocator_release;
}
else
{
/* Free the allocation information - nothing to be passed back */
_mali_osk_free( ret_allocation );
}
return result;
}
static mali_physical_memory_allocation_result os_allocator_allocate(void* ctx, mali_allocation_engine * engine, mali_memory_allocation * descriptor, u32* offset, mali_physical_memory_allocation * alloc_info)
{
mali_physical_memory_allocation_result result = MALI_MEM_ALLOC_NONE;
u32 left;
os_allocator * info;
os_allocation * allocation;
int pages_allocated = 0;
_mali_osk_errcode_t err = _MALI_OSK_ERR_OK;
MALI_DEBUG_ASSERT_POINTER(ctx);
MALI_DEBUG_ASSERT_POINTER(engine);
MALI_DEBUG_ASSERT_POINTER(descriptor);
MALI_DEBUG_ASSERT_POINTER(offset);
MALI_DEBUG_ASSERT_POINTER(alloc_info);
info = (os_allocator*)ctx;
left = descriptor->size - *offset;
if (_MALI_OSK_ERR_OK != _mali_osk_lock_wait(info->mutex, _MALI_OSK_LOCKMODE_RW)) return MALI_MEM_ALLOC_INTERNAL_FAILURE;
/** @note this code may not work on Linux, or may require a more complex Linux implementation */
allocation = _mali_osk_malloc(sizeof(os_allocation));
if (NULL != allocation)
{
/* MALI_SEC */
//u32 os_mem_max_usage = info->num_pages_max * _MALI_OSK_CPU_PAGE_SIZE;
allocation->offset_start = *offset;
allocation->num_pages = ((left + _MALI_OSK_CPU_PAGE_SIZE - 1) & ~(_MALI_OSK_CPU_PAGE_SIZE - 1)) >> _MALI_OSK_CPU_PAGE_ORDER;
MALI_DEBUG_PRINT(6, ("Allocating page array of size %d bytes\n", allocation->num_pages * sizeof(struct page*)));
/* MALI_SEC */
while (left > 0)
{
err = mali_allocation_engine_map_physical(engine, descriptor, *offset, MALI_MEMORY_ALLOCATION_OS_ALLOCATED_PHYSADDR_MAGIC, info->cpu_usage_adjust, _MALI_OSK_CPU_PAGE_SIZE);
if ( _MALI_OSK_ERR_OK != err)
{
if ( _MALI_OSK_ERR_NOMEM == err)
{
/* 'Partial' allocation (or, out-of-memory on first page) */
break;
}
MALI_DEBUG_PRINT(1, ("Mapping of physical memory failed\n"));
/* Fatal error, cleanup any previous pages allocated. */
if ( pages_allocated > 0 )
{
mali_allocation_engine_unmap_physical( engine, descriptor, allocation->offset_start, _MALI_OSK_CPU_PAGE_SIZE*pages_allocated, _MALI_OSK_MEM_MAPREGION_FLAG_OS_ALLOCATED_PHYSADDR );
/* (*offset) doesn't need to be restored; it will not be used by the caller on failure */
}
pages_allocated = 0;
result = MALI_MEM_ALLOC_INTERNAL_FAILURE;
break;
}
/* Loop iteration */
if (left < _MALI_OSK_CPU_PAGE_SIZE) left = 0;
else left -= _MALI_OSK_CPU_PAGE_SIZE;
pages_allocated++;
*offset += _MALI_OSK_CPU_PAGE_SIZE;
}
if (left) MALI_PRINT(("Out of memory. Mali memory allocated: %d kB Configured maximum OS memory usage: %d kB\n",
(info->num_pages_allocated * _MALI_OSK_CPU_PAGE_SIZE)/1024, (info->num_pages_max* _MALI_OSK_CPU_PAGE_SIZE)/1024));
/* Loop termination; decide on result */
if (pages_allocated)
{
MALI_DEBUG_PRINT(6, ("Allocated %d pages\n", pages_allocated));
if (left) result = MALI_MEM_ALLOC_PARTIAL;
else result = MALI_MEM_ALLOC_FINISHED;
/* Some OS do not perform a full cache flush (including all outer caches) for uncached mapped memory.
* They zero the memory through a cached mapping, then flush the inner caches but not the outer caches.
* This is required for MALI to have the correct view of the memory.
*/
_mali_osk_cache_ensure_uncached_range_flushed( (void *)descriptor, allocation->offset_start, pages_allocated *_MALI_OSK_CPU_PAGE_SIZE );
allocation->num_pages = pages_allocated;
allocation->engine = engine; /* Necessary to make the engine's unmap call */
allocation->descriptor = descriptor; /* Necessary to make the engine's unmap call */
info->num_pages_allocated += pages_allocated;
MALI_DEBUG_PRINT(6, ("%d out of %d pages now allocated\n", info->num_pages_allocated, info->num_pages_max));
alloc_info->ctx = info;
alloc_info->handle = allocation;
alloc_info->release = os_allocator_release;
}
else
{
MALI_DEBUG_PRINT(6, ("Releasing pages array due to no pages allocated\n"));
_mali_osk_free( allocation );
}
}