7 #include <linux/dma-mapping.h>
218 	struct etnaviv_vram_mapping *mapping;  in etnaviv_gem_get_vram_mapping()  local
220 	list_for_each_entry(mapping, &obj->vram_list, obj_node) {  in etnaviv_gem_get_vram_mapping()
221 		if (mapping->context == context)  in etnaviv_gem_get_vram_mapping()
222 			return mapping;  in etnaviv_gem_get_vram_mapping()
228 void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping)  in etnaviv_gem_mapping_unreference()  argument
230 	struct etnaviv_gem_object *etnaviv_obj = mapping->object;  in etnaviv_gem_mapping_unreference()
233 	WARN_ON(mapping->use == 0);  in etnaviv_gem_mapping_unreference()
234 	mapping->use -= 1;  in etnaviv_gem_mapping_unreference()
245 	struct etnaviv_vram_mapping *mapping;  in etnaviv_gem_mapping_get()  local
250 	mapping = etnaviv_gem_get_vram_mapping(etnaviv_obj, mmu_context);  in etnaviv_gem_mapping_get()
251 	if (mapping) {  in etnaviv_gem_mapping_get()
256 		 * the MMU owns this mapping to close this race.  in etnaviv_gem_mapping_get()
258 		if (mapping->use == 0) {  in etnaviv_gem_mapping_get()
260 			if (mapping->context == mmu_context)  in etnaviv_gem_mapping_get()
261 				mapping->use += 1;  in etnaviv_gem_mapping_get()
263 				mapping = NULL;  in etnaviv_gem_mapping_get()
265 			if (mapping)  in etnaviv_gem_mapping_get()
268 			mapping->use += 1;  in etnaviv_gem_mapping_get()
280 	 * See if we have a reaped vram mapping we can re-use before  in etnaviv_gem_mapping_get()
281 	 * allocating a fresh mapping.  in etnaviv_gem_mapping_get()
283 	mapping = etnaviv_gem_get_vram_mapping(etnaviv_obj, NULL);  in etnaviv_gem_mapping_get()
284 	if (!mapping) {  in etnaviv_gem_mapping_get()
285 		mapping = kzalloc(sizeof(*mapping), GFP_KERNEL);  in etnaviv_gem_mapping_get()
286 		if (!mapping) {  in etnaviv_gem_mapping_get()
291 		INIT_LIST_HEAD(&mapping->scan_node);  in etnaviv_gem_mapping_get()
292 		mapping->object = etnaviv_obj;  in etnaviv_gem_mapping_get()
294 		list_del(&mapping->obj_node);  in etnaviv_gem_mapping_get()
297 	mapping->use = 1;  in etnaviv_gem_mapping_get()
301 				    mapping, va);  in etnaviv_gem_mapping_get()
303 		kfree(mapping);  in etnaviv_gem_mapping_get()
305 		list_add_tail(&mapping->obj_node, &etnaviv_obj->vram_list);  in etnaviv_gem_mapping_get()
315 	return mapping;  in etnaviv_gem_mapping_get()
485 	struct etnaviv_vram_mapping *mapping, *tmp;  in etnaviv_gem_free_object()  local
494 	list_for_each_entry_safe(mapping, tmp, &etnaviv_obj->vram_list,  in etnaviv_gem_free_object()
496 		struct etnaviv_iommu_context *context = mapping->context;  in etnaviv_gem_free_object()
498 		WARN_ON(mapping->use);  in etnaviv_gem_free_object()
501 			etnaviv_iommu_unmap_gem(context, mapping);  in etnaviv_gem_free_object()
503 		list_del(&mapping->obj_node);  in etnaviv_gem_free_object()
504 		kfree(mapping);  in etnaviv_gem_free_object()