include/linux/swiotlb.h

1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/dma-direction.h>
48  * struct io_tlb_pool - IO TLB memory pool descriptor
50  *		range check to see if the memory was in fact allocated by this
53  *		range check to see if the memory was in fact allocated by this
88  * struct io_tlb_mem - Software IO TLB allocator
90  * @pool:	IO TLB memory pool descriptor (if not dynamic).
98  * @pools:	List of IO TLB memory pool descriptors (if dynamic).
99  * @dyn_alloc:	Dynamic IO TLB pool allocation work.
103  * @used_hiwater: The high water mark for total_used.  Used only for reporting
131  * swiotlb_find_pool() - find swiotlb pool to which a physical address belongs
145 	struct io_tlb_mem *mem = dev->dma_io_tlb_mem;  in swiotlb_find_pool()
157 	 * dev->dma_uses_io_tlb here and mem->pools in __swiotlb_find_pool().  in swiotlb_find_pool()
162 	if (READ_ONCE(dev->dma_uses_io_tlb))  in swiotlb_find_pool()
165 	if (paddr >= mem->defpool.start && paddr < mem->defpool.end)  in swiotlb_find_pool()
166 		return &mem->defpool;  in swiotlb_find_pool()
174 	struct io_tlb_mem *mem = dev->dma_io_tlb_mem;  in is_swiotlb_force_bounce()
176 	return mem && mem->force_bounce;  in is_swiotlb_force_bounce()
290 	return dev->dma_io_tlb_mem->for_alloc;  in is_swiotlb_for_alloc()