24  * struct panthor_heap_chunk_header - Heap chunk header
28 	 * @next: Next heap chunk in the list.
42 	/** @node: Used to insert the heap chunk in panthor_heap::chunks. */
45 	/** @bo: Buffer object backing the heap chunk. */
59 	/** @chunk_size: Size of each chunk. */
123 				    struct panthor_heap_chunk *chunk)  in panthor_free_heap_chunk()  argument
126 	list_del(&chunk->node);  in panthor_free_heap_chunk()
130 	panthor_kernel_bo_destroy(chunk->bo);  in panthor_free_heap_chunk()
131 	kfree(chunk);  in panthor_free_heap_chunk()
139 	struct panthor_heap_chunk *chunk;  in panthor_alloc_heap_chunk()  local
143 	chunk = kmalloc(sizeof(*chunk), GFP_KERNEL);  in panthor_alloc_heap_chunk()
144 	if (!chunk)  in panthor_alloc_heap_chunk()
147 	chunk->bo = panthor_kernel_bo_create(ptdev, vm, heap->chunk_size,  in panthor_alloc_heap_chunk()
151 	if (IS_ERR(chunk->bo)) {  in panthor_alloc_heap_chunk()
152 		ret = PTR_ERR(chunk->bo);  in panthor_alloc_heap_chunk()
156 	ret = panthor_kernel_bo_vmap(chunk->bo);  in panthor_alloc_heap_chunk()
160 	hdr = chunk->bo->kmap;  in panthor_alloc_heap_chunk()
176 	panthor_kernel_bo_vunmap(chunk->bo);  in panthor_alloc_heap_chunk()
179 	list_add(&chunk->node, &heap->chunks);  in panthor_alloc_heap_chunk()
186 	panthor_kernel_bo_destroy(chunk->bo);  in panthor_alloc_heap_chunk()
189 	kfree(chunk);  in panthor_alloc_heap_chunk()
197 	struct panthor_heap_chunk *chunk, *tmp;  in panthor_free_heap_chunks()  local
199 	list_for_each_entry_safe(chunk, tmp, &heap->chunks, node)  in panthor_free_heap_chunks()
200 		panthor_free_heap_chunk(vm, heap, chunk);  in panthor_free_heap_chunks()
254  * @initial_chunk_count: Number of chunk allocated at initialization time.
256  * @chunk_size: The size of each chunk. Must be page-aligned and lie in the
262  * @first_chunk_gpu_va: Pointer holding the GPU address of the first chunk
355  * panthor_heap_return_chunk() - Return an unused heap chunk
358  * @chunk_gpu_va: The chunk VA to return.
360  * This function is used when a chunk allocated with panthor_heap_grow()
370 	struct panthor_heap_chunk *chunk, *tmp, *removed = NULL;  in panthor_heap_return_chunk()  local
387 	list_for_each_entry_safe(chunk, tmp, &heap->chunks, node) {  in panthor_heap_return_chunk()
388 		if (panthor_kernel_bo_gpuva(chunk->bo) == chunk_gpu_va) {  in panthor_heap_return_chunk()
389 			removed = chunk;  in panthor_heap_return_chunk()
390 			list_del(&chunk->node);  in panthor_heap_return_chunk()
398 		panthor_kernel_bo_destroy(chunk->bo);  in panthor_heap_return_chunk()
399 		kfree(chunk);  in panthor_heap_return_chunk()
416  * @new_chunk_gpu_va: Pointer used to return the chunk VA.
433 	struct panthor_heap_chunk *chunk;  in panthor_heap_grow()  local
465 	 * faulty so the job that triggered this tiler chunk allocation and all  in panthor_heap_grow()
473 	chunk = list_first_entry(&heap->chunks,  in panthor_heap_grow()
476 	*new_chunk_gpu_va = (panthor_kernel_bo_gpuva(chunk->bo) & GENMASK_ULL(63, 12)) |  in panthor_heap_grow()
575  * preventing any use of the heap context or the chunk attached to them