32 static void dmam_release(struct device *dev, void *res)  in dmam_release()  argument
36 	dma_free_attrs(dev, this->size, this->vaddr, this->dma_handle,  in dmam_release()
40 static int dmam_match(struct device *dev, void *res, void *match_data)  in dmam_match()  argument
61 void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,  in dmam_free_coherent()  argument
66 	dma_free_coherent(dev, size, vaddr, dma_handle);  in dmam_free_coherent()
67 	WARN_ON(devres_destroy(dev, dmam_release, dmam_match, &match_data));  in dmam_free_coherent()
85 void *dmam_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,  in dmam_alloc_attrs()  argument
95 	vaddr = dma_alloc_attrs(dev, size, dma_handle, gfp, attrs);  in dmam_alloc_attrs()
106 	devres_add(dev, dr);  in dmam_alloc_attrs()
112 static bool dma_go_direct(struct device *dev, dma_addr_t mask,  in dma_go_direct()  argument
118 	if (dev->dma_ops_bypass)  in dma_go_direct()
119 		return min_not_zero(mask, dev->bus_dma_limit) >=  in dma_go_direct()
120 			    dma_direct_get_required_mask(dev);  in dma_go_direct()
131 static inline bool dma_alloc_direct(struct device *dev,  in dma_alloc_direct()  argument
134 	return dma_go_direct(dev, dev->coherent_dma_mask, ops);  in dma_alloc_direct()
137 static inline bool dma_map_direct(struct device *dev,  in dma_map_direct()  argument
140 	return dma_go_direct(dev, *dev->dma_mask, ops);  in dma_map_direct()
143 dma_addr_t dma_map_page_attrs(struct device *dev, struct page *page,  in dma_map_page_attrs()  argument
147 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_map_page_attrs()
152 	if (WARN_ON_ONCE(!dev->dma_mask))  in dma_map_page_attrs()
155 	if (dma_map_direct(dev, ops) ||  in dma_map_page_attrs()
156 	    arch_dma_map_page_direct(dev, page_to_phys(page) + offset + size))  in dma_map_page_attrs()
157 		addr = dma_direct_map_page(dev, page, offset, size, dir, attrs);  in dma_map_page_attrs()
159 		addr = ops->map_page(dev, page, offset, size, dir, attrs);  in dma_map_page_attrs()
161 	debug_dma_map_page(dev, page, offset, size, dir, addr, attrs);  in dma_map_page_attrs()
167 void dma_unmap_page_attrs(struct device *dev, dma_addr_t addr, size_t size,  in dma_unmap_page_attrs()  argument
170 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_page_attrs()
173 	if (dma_map_direct(dev, ops) ||  in dma_unmap_page_attrs()
174 	    arch_dma_unmap_page_direct(dev, addr + size))  in dma_unmap_page_attrs()
175 		dma_direct_unmap_page(dev, addr, size, dir, attrs);  in dma_unmap_page_attrs()
177 		ops->unmap_page(dev, addr, size, dir, attrs);  in dma_unmap_page_attrs()
178 	debug_dma_unmap_page(dev, addr, size, dir);  in dma_unmap_page_attrs()
182 static int __dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,  in __dma_map_sg_attrs()  argument
185 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_map_sg_attrs()
190 	if (WARN_ON_ONCE(!dev->dma_mask))  in __dma_map_sg_attrs()
193 	if (dma_map_direct(dev, ops) ||  in __dma_map_sg_attrs()
194 	    arch_dma_map_sg_direct(dev, sg, nents))  in __dma_map_sg_attrs()
195 		ents = dma_direct_map_sg(dev, sg, nents, dir, attrs);  in __dma_map_sg_attrs()
197 		ents = ops->map_sg(dev, sg, nents, dir, attrs);  in __dma_map_sg_attrs()
201 		debug_dma_map_sg(dev, sg, nents, ents, dir, attrs);  in __dma_map_sg_attrs()
227 unsigned int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,  in dma_map_sg_attrs()  argument
232 	ret = __dma_map_sg_attrs(dev, sg, nents, dir, attrs);  in dma_map_sg_attrs()
266 int dma_map_sgtable(struct device *dev, struct sg_table *sgt,  in dma_map_sgtable()  argument
271 	nents = __dma_map_sg_attrs(dev, sgt->sgl, sgt->orig_nents, dir, attrs);  in dma_map_sgtable()
279 void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,  in dma_unmap_sg_attrs()  argument
283 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_sg_attrs()
286 	debug_dma_unmap_sg(dev, sg, nents, dir);  in dma_unmap_sg_attrs()
287 	if (dma_map_direct(dev, ops) ||  in dma_unmap_sg_attrs()
288 	    arch_dma_unmap_sg_direct(dev, sg, nents))  in dma_unmap_sg_attrs()
289 		dma_direct_unmap_sg(dev, sg, nents, dir, attrs);  in dma_unmap_sg_attrs()
291 		ops->unmap_sg(dev, sg, nents, dir, attrs);  in dma_unmap_sg_attrs()
295 dma_addr_t dma_map_resource(struct device *dev, phys_addr_t phys_addr,  in dma_map_resource()  argument
298 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_map_resource()
303 	if (WARN_ON_ONCE(!dev->dma_mask))  in dma_map_resource()
306 	if (dma_map_direct(dev, ops))  in dma_map_resource()
307 		addr = dma_direct_map_resource(dev, phys_addr, size, dir, attrs);  in dma_map_resource()
309 		addr = ops->map_resource(dev, phys_addr, size, dir, attrs);  in dma_map_resource()
311 	debug_dma_map_resource(dev, phys_addr, size, dir, addr, attrs);  in dma_map_resource()
316 void dma_unmap_resource(struct device *dev, dma_addr_t addr, size_t size,  in dma_unmap_resource()  argument
319 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_unmap_resource()
322 	if (!dma_map_direct(dev, ops) && ops->unmap_resource)  in dma_unmap_resource()
323 		ops->unmap_resource(dev, addr, size, dir, attrs);  in dma_unmap_resource()
324 	debug_dma_unmap_resource(dev, addr, size, dir);  in dma_unmap_resource()
328 void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size,  in dma_sync_single_for_cpu()  argument
331 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_single_for_cpu()
334 	if (dma_map_direct(dev, ops))  in dma_sync_single_for_cpu()
335 		dma_direct_sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
337 		ops->sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
338 	debug_dma_sync_single_for_cpu(dev, addr, size, dir);  in dma_sync_single_for_cpu()
342 void dma_sync_single_for_device(struct device *dev, dma_addr_t addr,  in dma_sync_single_for_device()  argument
345 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_single_for_device()
348 	if (dma_map_direct(dev, ops))  in dma_sync_single_for_device()
349 		dma_direct_sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
351 		ops->sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
352 	debug_dma_sync_single_for_device(dev, addr, size, dir);  in dma_sync_single_for_device()
356 void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,  in dma_sync_sg_for_cpu()  argument
359 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_sg_for_cpu()
362 	if (dma_map_direct(dev, ops))  in dma_sync_sg_for_cpu()
363 		dma_direct_sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
365 		ops->sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
366 	debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);  in dma_sync_sg_for_cpu()
370 void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,  in dma_sync_sg_for_device()  argument
373 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_sync_sg_for_device()
376 	if (dma_map_direct(dev, ops))  in dma_sync_sg_for_device()
377 		dma_direct_sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
379 		ops->sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
380 	debug_dma_sync_sg_for_device(dev, sg, nelems, dir);  in dma_sync_sg_for_device()
395 int dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt,  in dma_get_sgtable_attrs()  argument
399 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_sgtable_attrs()
401 	if (dma_alloc_direct(dev, ops))  in dma_get_sgtable_attrs()
402 		return dma_direct_get_sgtable(dev, sgt, cpu_addr, dma_addr,  in dma_get_sgtable_attrs()
406 	return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size, attrs);  in dma_get_sgtable_attrs()
415 pgprot_t dma_pgprot(struct device *dev, pgprot_t prot, unsigned long attrs)  in dma_pgprot()  argument
417 	if (dev_is_dma_coherent(dev))  in dma_pgprot()
437 bool dma_can_mmap(struct device *dev)  in dma_can_mmap()  argument
439 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_can_mmap()
441 	if (dma_alloc_direct(dev, ops))  in dma_can_mmap()
442 		return dma_direct_can_mmap(dev);  in dma_can_mmap()
460 int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_attrs()  argument
464 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_mmap_attrs()
466 	if (dma_alloc_direct(dev, ops))  in dma_mmap_attrs()
467 		return dma_direct_mmap(dev, vma, cpu_addr, dma_addr, size,  in dma_mmap_attrs()
471 	return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs);  in dma_mmap_attrs()
475 u64 dma_get_required_mask(struct device *dev)  in dma_get_required_mask()  argument
477 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_required_mask()
479 	if (dma_alloc_direct(dev, ops))  in dma_get_required_mask()
480 		return dma_direct_get_required_mask(dev);  in dma_get_required_mask()
482 		return ops->get_required_mask(dev);  in dma_get_required_mask()
496 void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,  in dma_alloc_attrs()  argument
499 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_alloc_attrs()
502 	WARN_ON_ONCE(!dev->coherent_dma_mask);  in dma_alloc_attrs()
504 	if (dma_alloc_from_dev_coherent(dev, size, dma_handle, &cpu_addr))  in dma_alloc_attrs()
510 	if (dma_alloc_direct(dev, ops))  in dma_alloc_attrs()
511 		cpu_addr = dma_direct_alloc(dev, size, dma_handle, flag, attrs);  in dma_alloc_attrs()
513 		cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);  in dma_alloc_attrs()
517 	debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr, attrs);  in dma_alloc_attrs()
522 void dma_free_attrs(struct device *dev, size_t size, void *cpu_addr,  in dma_free_attrs()  argument
525 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_free_attrs()
527 	if (dma_release_from_dev_coherent(dev, get_order(size), cpu_addr))  in dma_free_attrs()
541 	debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);  in dma_free_attrs()
542 	if (dma_alloc_direct(dev, ops))  in dma_free_attrs()
543 		dma_direct_free(dev, size, cpu_addr, dma_handle, attrs);  in dma_free_attrs()
545 		ops->free(dev, size, cpu_addr, dma_handle, attrs);  in dma_free_attrs()
549 static struct page *__dma_alloc_pages(struct device *dev, size_t size,  in __dma_alloc_pages()  argument
552 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_alloc_pages()
554 	if (WARN_ON_ONCE(!dev->coherent_dma_mask))  in __dma_alloc_pages()
560 	if (dma_alloc_direct(dev, ops))  in __dma_alloc_pages()
561 		return dma_direct_alloc_pages(dev, size, dma_handle, dir, gfp);  in __dma_alloc_pages()
564 	return ops->alloc_pages(dev, size, dma_handle, dir, gfp);  in __dma_alloc_pages()
567 struct page *dma_alloc_pages(struct device *dev, size_t size,  in dma_alloc_pages()  argument
570 	struct page *page = __dma_alloc_pages(dev, size, dma_handle, dir, gfp);  in dma_alloc_pages()
573 		debug_dma_map_page(dev, page, 0, size, dir, *dma_handle, 0);  in dma_alloc_pages()
578 static void __dma_free_pages(struct device *dev, size_t size, struct page *page,  in __dma_free_pages()  argument
581 	const struct dma_map_ops *ops = get_dma_ops(dev);  in __dma_free_pages()
584 	if (dma_alloc_direct(dev, ops))  in __dma_free_pages()
585 		dma_direct_free_pages(dev, size, page, dma_handle, dir);  in __dma_free_pages()
587 		ops->free_pages(dev, size, page, dma_handle, dir);  in __dma_free_pages()
590 void dma_free_pages(struct device *dev, size_t size, struct page *page,  in dma_free_pages()  argument
593 	debug_dma_unmap_page(dev, dma_handle, size, dir);  in dma_free_pages()
594 	__dma_free_pages(dev, size, page, dma_handle, dir);  in dma_free_pages()
598 int dma_mmap_pages(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_pages()  argument
611 static struct sg_table *alloc_single_sgt(struct device *dev, size_t size,  in alloc_single_sgt()  argument
622 	page = __dma_alloc_pages(dev, size, &sgt->sgl->dma_address, dir, gfp);  in alloc_single_sgt()
635 struct sg_table *dma_alloc_noncontiguous(struct device *dev, size_t size,  in dma_alloc_noncontiguous()  argument
638 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_alloc_noncontiguous()
645 		sgt = ops->alloc_noncontiguous(dev, size, dir, gfp, attrs);  in dma_alloc_noncontiguous()
647 		sgt = alloc_single_sgt(dev, size, dir, gfp);  in dma_alloc_noncontiguous()
651 		debug_dma_map_sg(dev, sgt->sgl, sgt->orig_nents, 1, dir, attrs);  in dma_alloc_noncontiguous()
657 static void free_single_sgt(struct device *dev, size_t size,  in free_single_sgt()  argument
660 	__dma_free_pages(dev, size, sg_page(sgt->sgl), sgt->sgl->dma_address,  in free_single_sgt()
666 void dma_free_noncontiguous(struct device *dev, size_t size,  in dma_free_noncontiguous()  argument
669 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_free_noncontiguous()
671 	debug_dma_unmap_sg(dev, sgt->sgl, sgt->orig_nents, dir);  in dma_free_noncontiguous()
673 		ops->free_noncontiguous(dev, size, sgt, dir);  in dma_free_noncontiguous()
675 		free_single_sgt(dev, size, sgt, dir);  in dma_free_noncontiguous()
679 void *dma_vmap_noncontiguous(struct device *dev, size_t size,  in dma_vmap_noncontiguous()  argument
682 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_vmap_noncontiguous()
691 void dma_vunmap_noncontiguous(struct device *dev, void *vaddr)  in dma_vunmap_noncontiguous()  argument
693 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_vunmap_noncontiguous()
700 int dma_mmap_noncontiguous(struct device *dev, struct vm_area_struct *vma,  in dma_mmap_noncontiguous()  argument
703 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_mmap_noncontiguous()
713 	return dma_mmap_pages(dev, vma, size, sg_page(sgt->sgl));  in dma_mmap_noncontiguous()
717 static int dma_supported(struct device *dev, u64 mask)  in dma_supported()  argument
719 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_supported()
726 		return dma_direct_supported(dev, mask);  in dma_supported()
729 	return ops->dma_supported(dev, mask);  in dma_supported()
732 bool dma_pci_p2pdma_supported(struct device *dev)  in dma_pci_p2pdma_supported()  argument
734 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_pci_p2pdma_supported()
751 void arch_dma_set_mask(struct device *dev, u64 mask);
753 #define arch_dma_set_mask(dev, mask)	do { } while (0)  argument
756 int dma_set_mask(struct device *dev, u64 mask)  in dma_set_mask()  argument
764 	if (!dev->dma_mask || !dma_supported(dev, mask))  in dma_set_mask()
767 	arch_dma_set_mask(dev, mask);  in dma_set_mask()
768 	*dev->dma_mask = mask;  in dma_set_mask()
773 int dma_set_coherent_mask(struct device *dev, u64 mask)  in dma_set_coherent_mask()  argument
781 	if (!dma_supported(dev, mask))  in dma_set_coherent_mask()
784 	dev->coherent_dma_mask = mask;  in dma_set_coherent_mask()
789 size_t dma_max_mapping_size(struct device *dev)  in dma_max_mapping_size()  argument
791 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_max_mapping_size()
794 	if (dma_map_direct(dev, ops))  in dma_max_mapping_size()
795 		size = dma_direct_max_mapping_size(dev);  in dma_max_mapping_size()
797 		size = ops->max_mapping_size(dev);  in dma_max_mapping_size()
803 size_t dma_opt_mapping_size(struct device *dev)  in dma_opt_mapping_size()  argument
805 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_opt_mapping_size()
811 	return min(dma_max_mapping_size(dev), size);  in dma_opt_mapping_size()
815 bool dma_need_sync(struct device *dev, dma_addr_t dma_addr)  in dma_need_sync()  argument
817 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_need_sync()
819 	if (dma_map_direct(dev, ops))  in dma_need_sync()
820 		return dma_direct_need_sync(dev, dma_addr);  in dma_need_sync()
825 unsigned long dma_get_merge_boundary(struct device *dev)  in dma_get_merge_boundary()  argument
827 	const struct dma_map_ops *ops = get_dma_ops(dev);  in dma_get_merge_boundary()
832 	return ops->get_merge_boundary(dev);  in dma_get_merge_boundary()