31 static void dmam_release(struct device *dev, void *res)  in dmam_release()  argument
35 	dma_free_attrs(dev, this->size, this->vaddr, this->dma_handle,  in dmam_release()
39 static int dmam_match(struct device *dev, void *res, void *match_data)  in dmam_match()  argument
60 void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,  in dmam_free_coherent()  argument
65 	dma_free_coherent(dev, size, vaddr, dma_handle);  in dmam_free_coherent()
66 	WARN_ON(devres_destroy(dev, dmam_release, dmam_match, &match_data));  in dmam_free_coherent()
84 void *dmam_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,  in dmam_alloc_attrs()  argument
94 	vaddr = dma_alloc_attrs(dev, size, dma_handle, gfp, attrs);  in dmam_alloc_attrs()
105 	devres_add(dev, dr);  in dmam_alloc_attrs()
111 static bool dma_go_direct(struct device *dev, dma_addr_t mask,  in dma_go_direct()  argument
117 	if (dev->dma_ops_bypass)  in dma_go_direct()
118 		return min_not_zero(mask, dev->bus_dma_limit) >=  in dma_go_direct()
119 			    dma_direct_get_required_mask(dev);  in dma_go_direct()
130 static inline bool dma_alloc_direct(struct device *dev,  in dma_alloc_direct()  argument
133 	return dma_go_direct(dev, dev->coherent_dma_mask, ops);  in dma_alloc_direct()
136 static inline bool dma_map_direct(struct device *dev,  in dma_map_direct()  argument
139 	return dma_go_direct(dev, *dev->dma_mask, ops);  in dma_map_direct()
142 dma_addr_t dma_map_page_attrs(struct device *dev, struct page *page,  in dma_map_page_attrs()  argument
146 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_map_page_attrs()
151 	if (WARN_ON_ONCE(!dev->dma_mask))  in dma_map_page_attrs()
154 	if (dma_map_direct(dev, ops) ||  in dma_map_page_attrs()
155 	    arch_dma_map_page_direct(dev, page_to_phys(page) + offset + size))  in dma_map_page_attrs()
156 		addr = dma_direct_map_page(dev, page, offset, size, dir, attrs);  in dma_map_page_attrs()
158 		addr = ops->map_page(dev, page, offset, size, dir, attrs);  in dma_map_page_attrs()
159 	debug_dma_map_page(dev, page, offset, size, dir, addr, attrs);  in dma_map_page_attrs()
165 void dma_unmap_page_attrs(struct device *dev, dma_addr_t addr, size_t size,  in dma_unmap_page_attrs()  argument
168 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_page_attrs()
171 	if (dma_map_direct(dev, ops) ||  in dma_unmap_page_attrs()
172 	    arch_dma_unmap_page_direct(dev, addr + size))  in dma_unmap_page_attrs()
173 		dma_direct_unmap_page(dev, addr, size, dir, attrs);  in dma_unmap_page_attrs()
175 		ops->unmap_page(dev, addr, size, dir, attrs);  in dma_unmap_page_attrs()
176 	debug_dma_unmap_page(dev, addr, size, dir);  in dma_unmap_page_attrs()
180 static int __dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,  in __dma_map_sg_attrs()  argument
183 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_map_sg_attrs()
188 	if (WARN_ON_ONCE(!dev->dma_mask))  in __dma_map_sg_attrs()
191 	if (dma_map_direct(dev, ops) ||  in __dma_map_sg_attrs()
192 	    arch_dma_map_sg_direct(dev, sg, nents))  in __dma_map_sg_attrs()
193 		ents = dma_direct_map_sg(dev, sg, nents, dir, attrs);  in __dma_map_sg_attrs()
195 		ents = ops->map_sg(dev, sg, nents, dir, attrs);  in __dma_map_sg_attrs()
198 		debug_dma_map_sg(dev, sg, nents, ents, dir, attrs);  in __dma_map_sg_attrs()
223 unsigned int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,  in dma_map_sg_attrs()  argument
228 	ret = __dma_map_sg_attrs(dev, sg, nents, dir, attrs);  in dma_map_sg_attrs()
259 int dma_map_sgtable(struct device *dev, struct sg_table *sgt,  in dma_map_sgtable()  argument
264 	nents = __dma_map_sg_attrs(dev, sgt->sgl, sgt->orig_nents, dir, attrs);  in dma_map_sgtable()
272 void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,  in dma_unmap_sg_attrs()  argument
276 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_sg_attrs()
279 	debug_dma_unmap_sg(dev, sg, nents, dir);  in dma_unmap_sg_attrs()
280 	if (dma_map_direct(dev, ops) ||  in dma_unmap_sg_attrs()
281 	    arch_dma_unmap_sg_direct(dev, sg, nents))  in dma_unmap_sg_attrs()
282 		dma_direct_unmap_sg(dev, sg, nents, dir, attrs);  in dma_unmap_sg_attrs()
284 		ops->unmap_sg(dev, sg, nents, dir, attrs);  in dma_unmap_sg_attrs()
288 dma_addr_t dma_map_resource(struct device *dev, phys_addr_t phys_addr,  in dma_map_resource()  argument
291 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_map_resource()
296 	if (WARN_ON_ONCE(!dev->dma_mask))  in dma_map_resource()
299 	if (dma_map_direct(dev, ops))  in dma_map_resource()
300 		addr = dma_direct_map_resource(dev, phys_addr, size, dir, attrs);  in dma_map_resource()
302 		addr = ops->map_resource(dev, phys_addr, size, dir, attrs);  in dma_map_resource()
304 	debug_dma_map_resource(dev, phys_addr, size, dir, addr, attrs);  in dma_map_resource()
309 void dma_unmap_resource(struct device *dev, dma_addr_t addr, size_t size,  in dma_unmap_resource()  argument
312 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_resource()
315 	if (!dma_map_direct(dev, ops) && ops->unmap_resource)  in dma_unmap_resource()
316 		ops->unmap_resource(dev, addr, size, dir, attrs);  in dma_unmap_resource()
317 	debug_dma_unmap_resource(dev, addr, size, dir);  in dma_unmap_resource()
321 void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size,  in dma_sync_single_for_cpu()  argument
324 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_single_for_cpu()
327 	if (dma_map_direct(dev, ops))  in dma_sync_single_for_cpu()
328 		dma_direct_sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
330 		ops->sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
331 	debug_dma_sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
335 void dma_sync_single_for_device(struct device *dev, dma_addr_t addr,  in dma_sync_single_for_device()  argument
338 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_single_for_device()
341 	if (dma_map_direct(dev, ops))  in dma_sync_single_for_device()
342 		dma_direct_sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
344 		ops->sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
345 	debug_dma_sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
349 void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,  in dma_sync_sg_for_cpu()  argument
352 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_sg_for_cpu()
355 	if (dma_map_direct(dev, ops))  in dma_sync_sg_for_cpu()
356 		dma_direct_sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
358 		ops->sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
359 	debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
363 void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,  in dma_sync_sg_for_device()  argument
366 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_sg_for_device()
369 	if (dma_map_direct(dev, ops))  in dma_sync_sg_for_device()
370 		dma_direct_sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
372 		ops->sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
373 	debug_dma_sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
388 int dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt,  in dma_get_sgtable_attrs()  argument
392 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_sgtable_attrs()
394 	if (dma_alloc_direct(dev, ops))  in dma_get_sgtable_attrs()
395 		return dma_direct_get_sgtable(dev, sgt, cpu_addr, dma_addr,  in dma_get_sgtable_attrs()
399 	return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size, attrs);  in dma_get_sgtable_attrs()
408 pgprot_t dma_pgprot(struct device *dev, pgprot_t prot, unsigned long attrs)  in dma_pgprot()  argument
410 	if (force_dma_unencrypted(dev))  in dma_pgprot()
412 	if (dev_is_dma_coherent(dev))  in dma_pgprot()
432 bool dma_can_mmap(struct device *dev)  in dma_can_mmap()  argument
434 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_can_mmap()
436 	if (dma_alloc_direct(dev, ops))  in dma_can_mmap()
437 		return dma_direct_can_mmap(dev);  in dma_can_mmap()
455 int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_attrs()  argument
459 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_mmap_attrs()
461 	if (dma_alloc_direct(dev, ops))  in dma_mmap_attrs()
462 		return dma_direct_mmap(dev, vma, cpu_addr, dma_addr, size,  in dma_mmap_attrs()
466 	return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs);  in dma_mmap_attrs()
470 u64 dma_get_required_mask(struct device *dev)  in dma_get_required_mask()  argument
472 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_required_mask()
474 	if (dma_alloc_direct(dev, ops))  in dma_get_required_mask()
475 		return dma_direct_get_required_mask(dev);  in dma_get_required_mask()
477 		return ops->get_required_mask(dev);  in dma_get_required_mask()
491 void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,  in dma_alloc_attrs()  argument
494 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_alloc_attrs()
497 	WARN_ON_ONCE(!dev->coherent_dma_mask);  in dma_alloc_attrs()
499 	if (dma_alloc_from_dev_coherent(dev, size, dma_handle, &cpu_addr))  in dma_alloc_attrs()
505 	if (dma_alloc_direct(dev, ops))  in dma_alloc_attrs()
506 		cpu_addr = dma_direct_alloc(dev, size, dma_handle, flag, attrs);  in dma_alloc_attrs()
508 		cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);  in dma_alloc_attrs()
512 	debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr, attrs);  in dma_alloc_attrs()
517 void dma_free_attrs(struct device *dev, size_t size, void *cpu_addr,  in dma_free_attrs()  argument
520 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_free_attrs()
522 	if (dma_release_from_dev_coherent(dev, get_order(size), cpu_addr))  in dma_free_attrs()
536 	debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);  in dma_free_attrs()
537 	if (dma_alloc_direct(dev, ops))  in dma_free_attrs()
538 		dma_direct_free(dev, size, cpu_addr, dma_handle, attrs);  in dma_free_attrs()
540 		ops->free(dev, size, cpu_addr, dma_handle, attrs);  in dma_free_attrs()
544 static struct page *__dma_alloc_pages(struct device *dev, size_t size,  in __dma_alloc_pages()  argument
547 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_alloc_pages()
549 	if (WARN_ON_ONCE(!dev->coherent_dma_mask))  in __dma_alloc_pages()
555 	if (dma_alloc_direct(dev, ops))  in __dma_alloc_pages()
556 		return dma_direct_alloc_pages(dev, size, dma_handle, dir, gfp);  in __dma_alloc_pages()
559 	return ops->alloc_pages(dev, size, dma_handle, dir, gfp);  in __dma_alloc_pages()
562 struct page *dma_alloc_pages(struct device *dev, size_t size,  in dma_alloc_pages()  argument
565 	struct page *page = __dma_alloc_pages(dev, size, dma_handle, dir, gfp);  in dma_alloc_pages()
568 		debug_dma_map_page(dev, page, 0, size, dir, *dma_handle, 0);  in dma_alloc_pages()
573 static void __dma_free_pages(struct device *dev, size_t size, struct page *page,  in __dma_free_pages()  argument
576 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_free_pages()
579 	if (dma_alloc_direct(dev, ops))  in __dma_free_pages()
580 		dma_direct_free_pages(dev, size, page, dma_handle, dir);  in __dma_free_pages()
582 		ops->free_pages(dev, size, page, dma_handle, dir);  in __dma_free_pages()
585 void dma_free_pages(struct device *dev, size_t size, struct page *page,  in dma_free_pages()  argument
588 	debug_dma_unmap_page(dev, dma_handle, size, dir);  in dma_free_pages()
589 	__dma_free_pages(dev, size, page, dma_handle, dir);  in dma_free_pages()
593 int dma_mmap_pages(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_pages()  argument
606 static struct sg_table *alloc_single_sgt(struct device *dev, size_t size,  in alloc_single_sgt()  argument
617 	page = __dma_alloc_pages(dev, size, &sgt->sgl->dma_address, dir, gfp);  in alloc_single_sgt()
630 struct sg_table *dma_alloc_noncontiguous(struct device *dev, size_t size,  in dma_alloc_noncontiguous()  argument
633 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_alloc_noncontiguous()
640 		sgt = ops->alloc_noncontiguous(dev, size, dir, gfp, attrs);  in dma_alloc_noncontiguous()
642 		sgt = alloc_single_sgt(dev, size, dir, gfp);  in dma_alloc_noncontiguous()
646 		debug_dma_map_sg(dev, sgt->sgl, sgt->orig_nents, 1, dir, attrs);  in dma_alloc_noncontiguous()
652 static void free_single_sgt(struct device *dev, size_t size,  in free_single_sgt()  argument
655 	__dma_free_pages(dev, size, sg_page(sgt->sgl), sgt->sgl->dma_address,  in free_single_sgt()
661 void dma_free_noncontiguous(struct device *dev, size_t size,  in dma_free_noncontiguous()  argument
664 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_free_noncontiguous()
666 	debug_dma_unmap_sg(dev, sgt->sgl, sgt->orig_nents, dir);  in dma_free_noncontiguous()
668 		ops->free_noncontiguous(dev, size, sgt, dir);  in dma_free_noncontiguous()
670 		free_single_sgt(dev, size, sgt, dir);  in dma_free_noncontiguous()
674 void *dma_vmap_noncontiguous(struct device *dev, size_t size,  in dma_vmap_noncontiguous()  argument
677 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_vmap_noncontiguous()
686 void dma_vunmap_noncontiguous(struct device *dev, void *vaddr)  in dma_vunmap_noncontiguous()  argument
688 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_vunmap_noncontiguous()
695 int dma_mmap_noncontiguous(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_noncontiguous()  argument
698 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_mmap_noncontiguous()
708 	return dma_mmap_pages(dev, vma, size, sg_page(sgt->sgl));  in dma_mmap_noncontiguous()
712 int dma_supported(struct device *dev, u64 mask)  in dma_supported()  argument
714 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_supported()
721 		return dma_direct_supported(dev, mask);  in dma_supported()
724 	return ops->dma_supported(dev, mask);  in dma_supported()
729 void arch_dma_set_mask(struct device *dev, u64 mask);
731 #define arch_dma_set_mask(dev, mask)	do { } while (0)  argument
734 int dma_set_mask(struct device *dev, u64 mask)  in dma_set_mask()  argument
742 	if (!dev->dma_mask || !dma_supported(dev, mask))  in dma_set_mask()
745 	arch_dma_set_mask(dev, mask);  in dma_set_mask()
746 	*dev->dma_mask = mask;  in dma_set_mask()
752 int dma_set_coherent_mask(struct device *dev, u64 mask)  in dma_set_coherent_mask()  argument
760 	if (!dma_supported(dev, mask))  in dma_set_coherent_mask()
763 	dev->coherent_dma_mask = mask;  in dma_set_coherent_mask()
769 size_t dma_max_mapping_size(struct device *dev)  in dma_max_mapping_size()  argument
771 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_max_mapping_size()
774 	if (dma_map_direct(dev, ops))  in dma_max_mapping_size()
775 		size = dma_direct_max_mapping_size(dev);  in dma_max_mapping_size()
777 		size = ops->max_mapping_size(dev);  in dma_max_mapping_size()
783 bool dma_need_sync(struct device *dev, dma_addr_t dma_addr)  in dma_need_sync()  argument
785 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_need_sync()
787 	if (dma_map_direct(dev, ops))  in dma_need_sync()
788 		return dma_direct_need_sync(dev, dma_addr);  in dma_need_sync()
793 unsigned long dma_get_merge_boundary(struct device *dev)  in dma_get_merge_boundary()  argument
795 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_merge_boundary()
800 	return ops->get_merge_boundary(dev);  in dma_get_merge_boundary()