36 static void dmam_release(struct device *dev, void *res)  in dmam_release()  argument
40 	dma_free_attrs(dev, this->size, this->vaddr, this->dma_handle,  in dmam_release()
44 static int dmam_match(struct device *dev, void *res, void *match_data)  in dmam_match()  argument
65 void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,  in dmam_free_coherent()  argument
70 	WARN_ON(devres_destroy(dev, dmam_release, dmam_match, &match_data));  in dmam_free_coherent()
71 	dma_free_coherent(dev, size, vaddr, dma_handle);  in dmam_free_coherent()
89 void *dmam_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,  in dmam_alloc_attrs()  argument
99 	vaddr = dma_alloc_attrs(dev, size, dma_handle, gfp, attrs);  in dmam_alloc_attrs()
110 	devres_add(dev, dr);  in dmam_alloc_attrs()
116 static bool dma_go_direct(struct device *dev, dma_addr_t mask,  in dma_go_direct()  argument
122 	if (dev->dma_ops_bypass)  in dma_go_direct()
123 		return min_not_zero(mask, dev->bus_dma_limit) >=  in dma_go_direct()
124 			    dma_direct_get_required_mask(dev);  in dma_go_direct()
135 static inline bool dma_alloc_direct(struct device *dev,  in dma_alloc_direct()  argument
138 	return dma_go_direct(dev, dev->coherent_dma_mask, ops);  in dma_alloc_direct()
141 static inline bool dma_map_direct(struct device *dev,  in dma_map_direct()  argument
144 	return dma_go_direct(dev, *dev->dma_mask, ops);  in dma_map_direct()
147 dma_addr_t dma_map_page_attrs(struct device *dev, struct page *page,  in dma_map_page_attrs()  argument
151 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_map_page_attrs()
156 	if (WARN_ON_ONCE(!dev->dma_mask))  in dma_map_page_attrs()
159 	if (dma_map_direct(dev, ops) ||  in dma_map_page_attrs()
160 	    arch_dma_map_page_direct(dev, page_to_phys(page) + offset + size))  in dma_map_page_attrs()
161 		addr = dma_direct_map_page(dev, page, offset, size, dir, attrs);  in dma_map_page_attrs()
163 		addr = ops->map_page(dev, page, offset, size, dir, attrs);  in dma_map_page_attrs()
165 	debug_dma_map_page(dev, page, offset, size, dir, addr, attrs);  in dma_map_page_attrs()
171 void dma_unmap_page_attrs(struct device *dev, dma_addr_t addr, size_t size,  in dma_unmap_page_attrs()  argument
174 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_page_attrs()
177 	if (dma_map_direct(dev, ops) ||  in dma_unmap_page_attrs()
178 	    arch_dma_unmap_page_direct(dev, addr + size))  in dma_unmap_page_attrs()
179 		dma_direct_unmap_page(dev, addr, size, dir, attrs);  in dma_unmap_page_attrs()
181 		ops->unmap_page(dev, addr, size, dir, attrs);  in dma_unmap_page_attrs()
182 	debug_dma_unmap_page(dev, addr, size, dir);  in dma_unmap_page_attrs()
186 static int __dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,  in __dma_map_sg_attrs()  argument
189 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_map_sg_attrs()
194 	if (WARN_ON_ONCE(!dev->dma_mask))  in __dma_map_sg_attrs()
197 	if (dma_map_direct(dev, ops) ||  in __dma_map_sg_attrs()
198 	    arch_dma_map_sg_direct(dev, sg, nents))  in __dma_map_sg_attrs()
199 		ents = dma_direct_map_sg(dev, sg, nents, dir, attrs);  in __dma_map_sg_attrs()
201 		ents = ops->map_sg(dev, sg, nents, dir, attrs);  in __dma_map_sg_attrs()
205 		debug_dma_map_sg(dev, sg, nents, ents, dir, attrs);  in __dma_map_sg_attrs()
231 unsigned int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,  in dma_map_sg_attrs()  argument
236 	ret = __dma_map_sg_attrs(dev, sg, nents, dir, attrs);  in dma_map_sg_attrs()
270 int dma_map_sgtable(struct device *dev, struct sg_table *sgt,  in dma_map_sgtable()  argument
275 	nents = __dma_map_sg_attrs(dev, sgt->sgl, sgt->orig_nents, dir, attrs);  in dma_map_sgtable()
283 void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,  in dma_unmap_sg_attrs()  argument
287 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_sg_attrs()
290 	debug_dma_unmap_sg(dev, sg, nents, dir);  in dma_unmap_sg_attrs()
291 	if (dma_map_direct(dev, ops) ||  in dma_unmap_sg_attrs()
292 	    arch_dma_unmap_sg_direct(dev, sg, nents))  in dma_unmap_sg_attrs()
293 		dma_direct_unmap_sg(dev, sg, nents, dir, attrs);  in dma_unmap_sg_attrs()
295 		ops->unmap_sg(dev, sg, nents, dir, attrs);  in dma_unmap_sg_attrs()
299 dma_addr_t dma_map_resource(struct device *dev, phys_addr_t phys_addr,  in dma_map_resource()  argument
302 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_map_resource()
307 	if (WARN_ON_ONCE(!dev->dma_mask))  in dma_map_resource()
310 	if (dma_map_direct(dev, ops))  in dma_map_resource()
311 		addr = dma_direct_map_resource(dev, phys_addr, size, dir, attrs);  in dma_map_resource()
313 		addr = ops->map_resource(dev, phys_addr, size, dir, attrs);  in dma_map_resource()
315 	debug_dma_map_resource(dev, phys_addr, size, dir, addr, attrs);  in dma_map_resource()
320 void dma_unmap_resource(struct device *dev, dma_addr_t addr, size_t size,  in dma_unmap_resource()  argument
323 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_resource()
326 	if (!dma_map_direct(dev, ops) && ops->unmap_resource)  in dma_unmap_resource()
327 		ops->unmap_resource(dev, addr, size, dir, attrs);  in dma_unmap_resource()
328 	debug_dma_unmap_resource(dev, addr, size, dir);  in dma_unmap_resource()
332 void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size,  in dma_sync_single_for_cpu()  argument
335 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_single_for_cpu()
338 	if (dma_map_direct(dev, ops))  in dma_sync_single_for_cpu()
339 		dma_direct_sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
341 		ops->sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
342 	debug_dma_sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
346 void dma_sync_single_for_device(struct device *dev, dma_addr_t addr,  in dma_sync_single_for_device()  argument
349 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_single_for_device()
352 	if (dma_map_direct(dev, ops))  in dma_sync_single_for_device()
353 		dma_direct_sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
355 		ops->sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
356 	debug_dma_sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
360 void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,  in dma_sync_sg_for_cpu()  argument
363 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_sg_for_cpu()
366 	if (dma_map_direct(dev, ops))  in dma_sync_sg_for_cpu()
367 		dma_direct_sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
369 		ops->sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
370 	debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
374 void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,  in dma_sync_sg_for_device()  argument
377 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_sg_for_device()
380 	if (dma_map_direct(dev, ops))  in dma_sync_sg_for_device()
381 		dma_direct_sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
383 		ops->sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
384 	debug_dma_sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
399 int dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt,  in dma_get_sgtable_attrs()  argument
403 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_sgtable_attrs()
405 	if (dma_alloc_direct(dev, ops))  in dma_get_sgtable_attrs()
406 		return dma_direct_get_sgtable(dev, sgt, cpu_addr, dma_addr,  in dma_get_sgtable_attrs()
410 	return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size, attrs);  in dma_get_sgtable_attrs()
419 pgprot_t dma_pgprot(struct device *dev, pgprot_t prot, unsigned long attrs)  in dma_pgprot()  argument
421 	if (dev_is_dma_coherent(dev))  in dma_pgprot()
438 bool dma_can_mmap(struct device *dev)  in dma_can_mmap()  argument
440 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_can_mmap()
442 	if (dma_alloc_direct(dev, ops))  in dma_can_mmap()
443 		return dma_direct_can_mmap(dev);  in dma_can_mmap()
461 int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_attrs()  argument
465 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_mmap_attrs()
467 	if (dma_alloc_direct(dev, ops))  in dma_mmap_attrs()
468 		return dma_direct_mmap(dev, vma, cpu_addr, dma_addr, size,  in dma_mmap_attrs()
472 	return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs);  in dma_mmap_attrs()
476 u64 dma_get_required_mask(struct device *dev)  in dma_get_required_mask()  argument
478 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_required_mask()
480 	if (dma_alloc_direct(dev, ops))  in dma_get_required_mask()
481 		return dma_direct_get_required_mask(dev);  in dma_get_required_mask()
483 		return ops->get_required_mask(dev);  in dma_get_required_mask()
497 void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,  in dma_alloc_attrs()  argument
500 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_alloc_attrs()
503 	WARN_ON_ONCE(!dev->coherent_dma_mask);  in dma_alloc_attrs()
513 	if (dma_alloc_from_dev_coherent(dev, size, dma_handle, &cpu_addr))  in dma_alloc_attrs()
519 	if (dma_alloc_direct(dev, ops))  in dma_alloc_attrs()
520 		cpu_addr = dma_direct_alloc(dev, size, dma_handle, flag, attrs);  in dma_alloc_attrs()
522 		cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);  in dma_alloc_attrs()
526 	debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr, attrs);  in dma_alloc_attrs()
531 void dma_free_attrs(struct device *dev, size_t size, void *cpu_addr,  in dma_free_attrs()  argument
534 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_free_attrs()
536 	if (dma_release_from_dev_coherent(dev, get_order(size), cpu_addr))  in dma_free_attrs()
550 	debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);  in dma_free_attrs()
551 	if (dma_alloc_direct(dev, ops))  in dma_free_attrs()
552 		dma_direct_free(dev, size, cpu_addr, dma_handle, attrs);  in dma_free_attrs()
554 		ops->free(dev, size, cpu_addr, dma_handle, attrs);  in dma_free_attrs()
558 static struct page *__dma_alloc_pages(struct device *dev, size_t size,  in __dma_alloc_pages()  argument
561 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_alloc_pages()
563 	if (WARN_ON_ONCE(!dev->coherent_dma_mask))  in __dma_alloc_pages()
571 	if (dma_alloc_direct(dev, ops))  in __dma_alloc_pages()
572 		return dma_direct_alloc_pages(dev, size, dma_handle, dir, gfp);  in __dma_alloc_pages()
575 	return ops->alloc_pages(dev, size, dma_handle, dir, gfp);  in __dma_alloc_pages()
578 struct page *dma_alloc_pages(struct device *dev, size_t size,  in dma_alloc_pages()  argument
581 	struct page *page = __dma_alloc_pages(dev, size, dma_handle, dir, gfp);  in dma_alloc_pages()
584 		debug_dma_map_page(dev, page, 0, size, dir, *dma_handle, 0);  in dma_alloc_pages()
589 static void __dma_free_pages(struct device *dev, size_t size, struct page *page,  in __dma_free_pages()  argument
592 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_free_pages()
595 	if (dma_alloc_direct(dev, ops))  in __dma_free_pages()
596 		dma_direct_free_pages(dev, size, page, dma_handle, dir);  in __dma_free_pages()
598 		ops->free_pages(dev, size, page, dma_handle, dir);  in __dma_free_pages()
601 void dma_free_pages(struct device *dev, size_t size, struct page *page,  in dma_free_pages()  argument
604 	debug_dma_unmap_page(dev, dma_handle, size, dir);  in dma_free_pages()
605 	__dma_free_pages(dev, size, page, dma_handle, dir);  in dma_free_pages()
609 int dma_mmap_pages(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_pages()  argument
622 static struct sg_table *alloc_single_sgt(struct device *dev, size_t size,  in alloc_single_sgt()  argument
633 	page = __dma_alloc_pages(dev, size, &sgt->sgl->dma_address, dir, gfp);  in alloc_single_sgt()
646 struct sg_table *dma_alloc_noncontiguous(struct device *dev, size_t size,  in dma_alloc_noncontiguous()  argument
649 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_alloc_noncontiguous()
658 		sgt = ops->alloc_noncontiguous(dev, size, dir, gfp, attrs);  in dma_alloc_noncontiguous()
660 		sgt = alloc_single_sgt(dev, size, dir, gfp);  in dma_alloc_noncontiguous()
664 		debug_dma_map_sg(dev, sgt->sgl, sgt->orig_nents, 1, dir, attrs);  in dma_alloc_noncontiguous()
670 static void free_single_sgt(struct device *dev, size_t size,  in free_single_sgt()  argument
673 	__dma_free_pages(dev, size, sg_page(sgt->sgl), sgt->sgl->dma_address,  in free_single_sgt()
679 void dma_free_noncontiguous(struct device *dev, size_t size,  in dma_free_noncontiguous()  argument
682 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_free_noncontiguous()
684 	debug_dma_unmap_sg(dev, sgt->sgl, sgt->orig_nents, dir);  in dma_free_noncontiguous()
686 		ops->free_noncontiguous(dev, size, sgt, dir);  in dma_free_noncontiguous()
688 		free_single_sgt(dev, size, sgt, dir);  in dma_free_noncontiguous()
692 void *dma_vmap_noncontiguous(struct device *dev, size_t size,  in dma_vmap_noncontiguous()  argument
695 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_vmap_noncontiguous()
704 void dma_vunmap_noncontiguous(struct device *dev, void *vaddr)  in dma_vunmap_noncontiguous()  argument
706 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_vunmap_noncontiguous()
713 int dma_mmap_noncontiguous(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_noncontiguous()  argument
716 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_mmap_noncontiguous()
726 	return dma_mmap_pages(dev, vma, size, sg_page(sgt->sgl));  in dma_mmap_noncontiguous()
730 static int dma_supported(struct device *dev, u64 mask)  in dma_supported()  argument
732 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_supported()
739 		return dma_direct_supported(dev, mask);  in dma_supported()
742 	return ops->dma_supported(dev, mask);  in dma_supported()
745 bool dma_pci_p2pdma_supported(struct device *dev)  in dma_pci_p2pdma_supported()  argument
747 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_pci_p2pdma_supported()
763 int dma_set_mask(struct device *dev, u64 mask)  in dma_set_mask()  argument
771 	if (!dev->dma_mask || !dma_supported(dev, mask))  in dma_set_mask()
774 	arch_dma_set_mask(dev, mask);  in dma_set_mask()
775 	*dev->dma_mask = mask;  in dma_set_mask()
780 int dma_set_coherent_mask(struct device *dev, u64 mask)  in dma_set_coherent_mask()  argument
788 	if (!dma_supported(dev, mask))  in dma_set_coherent_mask()
791 	dev->coherent_dma_mask = mask;  in dma_set_coherent_mask()
796 size_t dma_max_mapping_size(struct device *dev)  in dma_max_mapping_size()  argument
798 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_max_mapping_size()
801 	if (dma_map_direct(dev, ops))  in dma_max_mapping_size()
802 		size = dma_direct_max_mapping_size(dev);  in dma_max_mapping_size()
804 		size = ops->max_mapping_size(dev);  in dma_max_mapping_size()
810 size_t dma_opt_mapping_size(struct device *dev)  in dma_opt_mapping_size()  argument
812 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_opt_mapping_size()
818 	return min(dma_max_mapping_size(dev), size);  in dma_opt_mapping_size()
822 bool dma_need_sync(struct device *dev, dma_addr_t dma_addr)  in dma_need_sync()  argument
824 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_need_sync()
826 	if (dma_map_direct(dev, ops))  in dma_need_sync()
827 		return dma_direct_need_sync(dev, dma_addr);  in dma_need_sync()
832 unsigned long dma_get_merge_boundary(struct device *dev)  in dma_get_merge_boundary()  argument
834 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_merge_boundary()
839 	return ops->get_merge_boundary(dev);  in dma_get_merge_boundary()