7 #include <linux/dma-mapping.h>
219 	struct etnaviv_vram_mapping *mapping;  in etnaviv_gem_get_vram_mapping()  local
221 	list_for_each_entry(mapping, &obj->vram_list, obj_node) {  in etnaviv_gem_get_vram_mapping()
222 		if (mapping->context == context)  in etnaviv_gem_get_vram_mapping()
223 			return mapping;  in etnaviv_gem_get_vram_mapping()
229 void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping)  in etnaviv_gem_mapping_unreference()  argument
231 	struct etnaviv_gem_object *etnaviv_obj = mapping->object;  in etnaviv_gem_mapping_unreference()
234 	WARN_ON(mapping->use == 0);  in etnaviv_gem_mapping_unreference()
235 	mapping->use -= 1;  in etnaviv_gem_mapping_unreference()
246 	struct etnaviv_vram_mapping *mapping;  in etnaviv_gem_mapping_get()  local
251 	mapping = etnaviv_gem_get_vram_mapping(etnaviv_obj, mmu_context);  in etnaviv_gem_mapping_get()
252 	if (mapping) {  in etnaviv_gem_mapping_get()
257 		 * the MMU owns this mapping to close this race.  in etnaviv_gem_mapping_get()
259 		if (mapping->use == 0) {  in etnaviv_gem_mapping_get()
261 			if (mapping->context == mmu_context)  in etnaviv_gem_mapping_get()
262 				if (va && mapping->iova != va) {  in etnaviv_gem_mapping_get()
263 					etnaviv_iommu_reap_mapping(mapping);  in etnaviv_gem_mapping_get()
264 					mapping = NULL;  in etnaviv_gem_mapping_get()
266 					mapping->use += 1;  in etnaviv_gem_mapping_get()
269 				mapping = NULL;  in etnaviv_gem_mapping_get()
271 			if (mapping)  in etnaviv_gem_mapping_get()
274 			mapping->use += 1;  in etnaviv_gem_mapping_get()
286 	 * See if we have a reaped vram mapping we can re-use before  in etnaviv_gem_mapping_get()
287 	 * allocating a fresh mapping.  in etnaviv_gem_mapping_get()
289 	mapping = etnaviv_gem_get_vram_mapping(etnaviv_obj, NULL);  in etnaviv_gem_mapping_get()
290 	if (!mapping) {  in etnaviv_gem_mapping_get()
291 		mapping = kzalloc(sizeof(*mapping), GFP_KERNEL);  in etnaviv_gem_mapping_get()
292 		if (!mapping) {  in etnaviv_gem_mapping_get()
297 		INIT_LIST_HEAD(&mapping->scan_node);  in etnaviv_gem_mapping_get()
298 		mapping->object = etnaviv_obj;  in etnaviv_gem_mapping_get()
300 		list_del(&mapping->obj_node);  in etnaviv_gem_mapping_get()
303 	mapping->use = 1;  in etnaviv_gem_mapping_get()
307 				    mapping, va);  in etnaviv_gem_mapping_get()
309 		kfree(mapping);  in etnaviv_gem_mapping_get()
311 		list_add_tail(&mapping->obj_node, &etnaviv_obj->vram_list);  in etnaviv_gem_mapping_get()
321 	return mapping;  in etnaviv_gem_mapping_get()
491 	struct etnaviv_vram_mapping *mapping, *tmp;  in etnaviv_gem_free_object()  local
500 	list_for_each_entry_safe(mapping, tmp, &etnaviv_obj->vram_list,  in etnaviv_gem_free_object()
502 		struct etnaviv_iommu_context *context = mapping->context;  in etnaviv_gem_free_object()
504 		WARN_ON(mapping->use);  in etnaviv_gem_free_object()
507 			etnaviv_iommu_unmap_gem(context, mapping);  in etnaviv_gem_free_object()
509 		list_del(&mapping->obj_node);  in etnaviv_gem_free_object()
510 		kfree(mapping);  in etnaviv_gem_free_object()