56  * @vaddr: original vaddr return for the mapping and order in the lower bits
85 /* Allocate pages of size 1 << order with the given gfp_flags */
87 					unsigned int order)  in ttm_pool_alloc_page()  argument
94 	/* Don't set the __GFP_COMP flag for higher order allocations.  in ttm_pool_alloc_page()
98 	if (order)  in ttm_pool_alloc_page()
103 		p = alloc_pages_node(pool->nid, gfp_flags, order);  in ttm_pool_alloc_page()
105 			p->private = order;  in ttm_pool_alloc_page()
114 	if (order)  in ttm_pool_alloc_page()
117 	vaddr = dma_alloc_attrs(pool->dev, (1ULL << order) * PAGE_SIZE,  in ttm_pool_alloc_page()
130 	dma->vaddr = (unsigned long)vaddr | order;  in ttm_pool_alloc_page()
139 /* Reset the caching and pages of size 1 << order */
141 			       unsigned int order, struct page *p)  in ttm_pool_free_page()  argument
152 		set_pages_wb(p, 1 << order);  in ttm_pool_free_page()
156 		__free_pages(p, order);  in ttm_pool_free_page()
160 	if (order)  in ttm_pool_free_page()
165 	dma_free_attrs(pool->dev, (1UL << order) * PAGE_SIZE, vaddr, dma->addr,  in ttm_pool_free_page()
173 					   gfp_t gfp_flags, unsigned int order,  in ttm_pool_alloc_page()  argument
192 	if (bus_dmamap_create(dmat, (1ULL << order) * PAGE_SIZE, 1,  in ttm_pool_alloc_page()
193 	    (1ULL << order) * PAGE_SIZE, 0, flags | dmaflags, &dma->map))  in ttm_pool_alloc_page()
196 	if (bus_dmamem_alloc_range(dmat, (1ULL << order) * PAGE_SIZE,  in ttm_pool_alloc_page()
203 	if (bus_dmamem_alloc(dmat, (1ULL << order) * PAGE_SIZE,  in ttm_pool_alloc_page()
210 	    (1ULL << order) * PAGE_SIZE, flags)) {  in ttm_pool_alloc_page()
233 			       unsigned int order, struct vm_page *p)  in ttm_pool_free_page()  argument
242 		set_pages_wb(p, 1 << order);  in ttm_pool_free_page()
278 /* Map pages of 1 << order size and fill the DMA address array  */
279 static int ttm_pool_map(struct ttm_pool *pool, unsigned int order,  in ttm_pool_map()  argument
290 		size_t size = (1ULL << order) * PAGE_SIZE;  in ttm_pool_map()
297 	for (i = 1 << order; i ; --i) {  in ttm_pool_map()
305 /* Unmap pages of 1 << order size */
319 static int ttm_pool_map(struct ttm_pool *pool, unsigned int order,  in ttm_pool_map()  argument
329 	for (i = 1 << order; i ; --i) {  in ttm_pool_map()
347 	unsigned int i, num_pages = 1 << pt->order;  in ttm_pool_type_give()
364 	atomic_long_add(1 << pt->order, &allocated_pages);  in ttm_pool_type_give()
377 		atomic_long_sub(1 << pt->order, &allocated_pages);  in ttm_pool_type_take()
388 			       enum ttm_caching caching, unsigned int order)  in ttm_pool_type_init()  argument
392 	pt->order = order;  in ttm_pool_type_init()
413 		ttm_pool_free_page(pt->pool, pt->caching, pt->order, p);  in ttm_pool_type_fini()
422 /* Return the pool_type to use for the given caching and order */
425 						  unsigned int order)  in ttm_pool_select_type()  argument
428 		return &pool->caching[caching].orders[order];  in ttm_pool_select_type()
434 			return &pool->caching[caching].orders[order];  in ttm_pool_select_type()
437 			return &global_dma32_write_combined[order];  in ttm_pool_select_type()
439 		return &global_write_combined[order];  in ttm_pool_select_type()
442 			return &pool->caching[caching].orders[order];  in ttm_pool_select_type()
445 			return &global_dma32_uncached[order];  in ttm_pool_select_type()
447 		return &global_uncached[order];  in ttm_pool_select_type()
470 		ttm_pool_free_page(pt->pool, pt->caching, pt->order, p);  in ttm_pool_shrink()
471 		num_pages = 1 << pt->order;  in ttm_pool_shrink()
481 /* Return the allocation order based for a page */
496 static int ttm_pool_page_allocated(struct ttm_pool *pool, unsigned int order,  in ttm_pool_page_allocated()  argument
506 		r = ttm_pool_map(pool, order, p, dma_addr);  in ttm_pool_page_allocated()
511 	*num_pages -= 1 << order;  in ttm_pool_page_allocated()
512 	for (i = 1 << order; i; --i, ++(*pages), ++p, ++(*orders)) {  in ttm_pool_page_allocated()
514 		**orders = order;  in ttm_pool_page_allocated()
538 	unsigned int order;  in ttm_pool_free_range()  local
544 		order = tt->orders[i];  in ttm_pool_free_range()
545 		nr = (1UL << order);  in ttm_pool_free_range()
549 		pt = ttm_pool_select_type(pool, caching, order);  in ttm_pool_free_range()
553 			ttm_pool_free_page(pool, caching, order, *pages);  in ttm_pool_free_range()
579 	unsigned int order;  in ttm_pool_alloc()  local
600 	for (order = min_t(unsigned int, MAX_ORDER, __fls(num_pages));  in ttm_pool_alloc()
602 	     order = min_t(unsigned int, order, __fls(num_pages))) {  in ttm_pool_alloc()
606 		pt = ttm_pool_select_type(pool, tt->caching, order);  in ttm_pool_alloc()
616 				r = ttm_pool_page_allocated(pool, order, p,  in ttm_pool_alloc()
624 				if (num_pages < (1 << order))  in ttm_pool_alloc()
632 		while (num_pages >= (1 << order) &&  in ttm_pool_alloc()
633 		       (p = ttm_pool_alloc_page(pool, gfp_flags, order, tt->dmat))) {  in ttm_pool_alloc()
642 			r = ttm_pool_page_allocated(pool, order, p, &dma_addr,  in ttm_pool_alloc()
651 			if (order) {  in ttm_pool_alloc()
652 				--order;  in ttm_pool_alloc()
667 	ttm_pool_free_page(pool, page_caching, order, p);  in ttm_pool_alloc()
810 /* Print a nice header for the order */