28 static const struct snd_malloc_ops *snd_dma_get_ops(struct snd_dma_buffer *dmab);
31 static void *snd_dma_sg_fallback_alloc(struct snd_dma_buffer *dmab, size_t size);
34 static void *__snd_dma_alloc_pages(struct snd_dma_buffer *dmab, size_t size)  in __snd_dma_alloc_pages()  argument
36 	const struct snd_malloc_ops *ops = snd_dma_get_ops(dmab);  in __snd_dma_alloc_pages()
40 	return ops->alloc(dmab, size);  in __snd_dma_alloc_pages()
60 			    struct snd_dma_buffer *dmab)  in snd_dma_alloc_dir_pages()  argument
64 	if (WARN_ON(!dmab))  in snd_dma_alloc_dir_pages()
68 	dmab->dev.type = type;  in snd_dma_alloc_dir_pages()
69 	dmab->dev.dev = device;  in snd_dma_alloc_dir_pages()
70 	dmab->dev.dir = dir;  in snd_dma_alloc_dir_pages()
71 	dmab->bytes = 0;  in snd_dma_alloc_dir_pages()
72 	dmab->addr = 0;  in snd_dma_alloc_dir_pages()
73 	dmab->private_data = NULL;  in snd_dma_alloc_dir_pages()
74 	dmab->area = __snd_dma_alloc_pages(dmab, size);  in snd_dma_alloc_dir_pages()
75 	if (!dmab->area)  in snd_dma_alloc_dir_pages()
77 	dmab->bytes = size;  in snd_dma_alloc_dir_pages()
98 				 struct snd_dma_buffer *dmab)  in snd_dma_alloc_pages_fallback()  argument
102 	while ((err = snd_dma_alloc_pages(type, device, size, dmab)) < 0) {  in snd_dma_alloc_pages_fallback()
110 	if (! dmab->area)  in snd_dma_alloc_pages_fallback()
122 void snd_dma_free_pages(struct snd_dma_buffer *dmab)  in snd_dma_free_pages()  argument
124 	const struct snd_malloc_ops *ops = snd_dma_get_ops(dmab);  in snd_dma_free_pages()
127 		ops->free(dmab);  in snd_dma_free_pages()
157 	struct snd_dma_buffer *dmab;  in snd_devm_alloc_dir_pages()  local
164 	dmab = devres_alloc(__snd_release_pages, sizeof(*dmab), GFP_KERNEL);  in snd_devm_alloc_dir_pages()
165 	if (!dmab)  in snd_devm_alloc_dir_pages()
168 	err = snd_dma_alloc_dir_pages(type, dev, dir, size, dmab);  in snd_devm_alloc_dir_pages()
170 		devres_free(dmab);  in snd_devm_alloc_dir_pages()
174 	devres_add(dev, dmab);  in snd_devm_alloc_dir_pages()
175 	return dmab;  in snd_devm_alloc_dir_pages()
186 int snd_dma_buffer_mmap(struct snd_dma_buffer *dmab,  in snd_dma_buffer_mmap()  argument
191 	if (!dmab)  in snd_dma_buffer_mmap()
193 	ops = snd_dma_get_ops(dmab);  in snd_dma_buffer_mmap()
195 		return ops->mmap(dmab, area);  in snd_dma_buffer_mmap()
207 void snd_dma_buffer_sync(struct snd_dma_buffer *dmab,  in snd_dma_buffer_sync()  argument
212 	if (!dmab || !dmab->dev.need_sync)  in snd_dma_buffer_sync()
214 	ops = snd_dma_get_ops(dmab);  in snd_dma_buffer_sync()
216 		ops->sync(dmab, mode);  in snd_dma_buffer_sync()
228 dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab, size_t offset)  in snd_sgbuf_get_addr()  argument
230 	const struct snd_malloc_ops *ops = snd_dma_get_ops(dmab);  in snd_sgbuf_get_addr()
233 		return ops->get_addr(dmab, offset);  in snd_sgbuf_get_addr()
235 		return dmab->addr + offset;  in snd_sgbuf_get_addr()
246 struct page *snd_sgbuf_get_page(struct snd_dma_buffer *dmab, size_t offset)  in snd_sgbuf_get_page()  argument
248 	const struct snd_malloc_ops *ops = snd_dma_get_ops(dmab);  in snd_sgbuf_get_page()
251 		return ops->get_page(dmab, offset);  in snd_sgbuf_get_page()
253 		return virt_to_page(dmab->area + offset);  in snd_sgbuf_get_page()
266 unsigned int snd_sgbuf_get_chunk_size(struct snd_dma_buffer *dmab,  in snd_sgbuf_get_chunk_size()  argument
269 	const struct snd_malloc_ops *ops = snd_dma_get_ops(dmab);  in snd_sgbuf_get_chunk_size()
272 		return ops->get_chunk_size(dmab, ofs, size);  in snd_sgbuf_get_chunk_size()
321 static void *snd_dma_continuous_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_continuous_alloc()  argument
323 	return do_alloc_pages(dmab->dev.dev, size, &dmab->addr, false);  in snd_dma_continuous_alloc()
326 static void snd_dma_continuous_free(struct snd_dma_buffer *dmab)  in snd_dma_continuous_free()  argument
328 	do_free_pages(dmab->area, dmab->bytes, false);  in snd_dma_continuous_free()
331 static int snd_dma_continuous_mmap(struct snd_dma_buffer *dmab,  in snd_dma_continuous_mmap()  argument
335 			       dmab->addr >> PAGE_SHIFT,  in snd_dma_continuous_mmap()
349 static void *snd_dma_vmalloc_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_vmalloc_alloc()  argument
354 static void snd_dma_vmalloc_free(struct snd_dma_buffer *dmab)  in snd_dma_vmalloc_free()  argument
356 	vfree(dmab->area);  in snd_dma_vmalloc_free()
359 static int snd_dma_vmalloc_mmap(struct snd_dma_buffer *dmab,  in snd_dma_vmalloc_mmap()  argument
362 	return remap_vmalloc_range(area, dmab->area, 0);  in snd_dma_vmalloc_mmap()
365 #define get_vmalloc_page_addr(dmab, offset) \  argument
366 	page_to_phys(vmalloc_to_page((dmab)->area + (offset)))
368 static dma_addr_t snd_dma_vmalloc_get_addr(struct snd_dma_buffer *dmab,  in snd_dma_vmalloc_get_addr()  argument
371 	return get_vmalloc_page_addr(dmab, offset) + offset % PAGE_SIZE;  in snd_dma_vmalloc_get_addr()
374 static struct page *snd_dma_vmalloc_get_page(struct snd_dma_buffer *dmab,  in snd_dma_vmalloc_get_page()  argument
377 	return vmalloc_to_page(dmab->area + offset);  in snd_dma_vmalloc_get_page()
381 snd_dma_vmalloc_get_chunk_size(struct snd_dma_buffer *dmab,  in snd_dma_vmalloc_get_chunk_size()  argument
390 	addr = get_vmalloc_page_addr(dmab, start);  in snd_dma_vmalloc_get_chunk_size()
396 		if (get_vmalloc_page_addr(dmab, start) != addr)  in snd_dma_vmalloc_get_chunk_size()
417 static void *snd_dma_iram_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_iram_alloc()  argument
419 	struct device *dev = dmab->dev.dev;  in snd_dma_iram_alloc()
426 		dmab->private_data = pool;  in snd_dma_iram_alloc()
428 		p = gen_pool_dma_alloc_align(pool, size, &dmab->addr, PAGE_SIZE);  in snd_dma_iram_alloc()
436 	dmab->dev.type = SNDRV_DMA_TYPE_DEV;  in snd_dma_iram_alloc()
437 	return __snd_dma_alloc_pages(dmab, size);  in snd_dma_iram_alloc()
440 static void snd_dma_iram_free(struct snd_dma_buffer *dmab)  in snd_dma_iram_free()  argument
442 	struct gen_pool *pool = dmab->private_data;  in snd_dma_iram_free()
444 	if (pool && dmab->area)  in snd_dma_iram_free()
445 		gen_pool_free(pool, (unsigned long)dmab->area, dmab->bytes);  in snd_dma_iram_free()
448 static int snd_dma_iram_mmap(struct snd_dma_buffer *dmab,  in snd_dma_iram_mmap()  argument
453 			       dmab->addr >> PAGE_SHIFT,  in snd_dma_iram_mmap()
468 static void *snd_dma_dev_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_dev_alloc()  argument
470 	return dma_alloc_coherent(dmab->dev.dev, size, &dmab->addr, DEFAULT_GFP);  in snd_dma_dev_alloc()
473 static void snd_dma_dev_free(struct snd_dma_buffer *dmab)  in snd_dma_dev_free()  argument
475 	dma_free_coherent(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);  in snd_dma_dev_free()
478 static int snd_dma_dev_mmap(struct snd_dma_buffer *dmab,  in snd_dma_dev_mmap()  argument
481 	return dma_mmap_coherent(dmab->dev.dev, area,  in snd_dma_dev_mmap()
482 				 dmab->area, dmab->addr, dmab->bytes);  in snd_dma_dev_mmap()
496 static void *snd_dma_wc_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_wc_alloc()  argument
498 	return do_alloc_pages(dmab->dev.dev, size, &dmab->addr, true);  in snd_dma_wc_alloc()
501 static void snd_dma_wc_free(struct snd_dma_buffer *dmab)  in snd_dma_wc_free()  argument
503 	do_free_pages(dmab->area, dmab->bytes, true);  in snd_dma_wc_free()
506 static int snd_dma_wc_mmap(struct snd_dma_buffer *dmab,  in snd_dma_wc_mmap()  argument
510 	return snd_dma_continuous_mmap(dmab, area);  in snd_dma_wc_mmap()
513 static void *snd_dma_wc_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_wc_alloc()  argument
515 	return dma_alloc_wc(dmab->dev.dev, size, &dmab->addr, DEFAULT_GFP);  in snd_dma_wc_alloc()
518 static void snd_dma_wc_free(struct snd_dma_buffer *dmab)  in snd_dma_wc_free()  argument
520 	dma_free_wc(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);  in snd_dma_wc_free()
523 static int snd_dma_wc_mmap(struct snd_dma_buffer *dmab,  in snd_dma_wc_mmap()  argument
526 	return dma_mmap_wc(dmab->dev.dev, area,  in snd_dma_wc_mmap()
527 			   dmab->area, dmab->addr, dmab->bytes);  in snd_dma_wc_mmap()
540 static void *snd_dma_noncontig_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_noncontig_alloc()  argument
545 	sgt = dma_alloc_noncontiguous(dmab->dev.dev, size, dmab->dev.dir,  in snd_dma_noncontig_alloc()
548 	if (!sgt && !get_dma_ops(dmab->dev.dev)) {  in snd_dma_noncontig_alloc()
549 		if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG)  in snd_dma_noncontig_alloc()
550 			dmab->dev.type = SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK;  in snd_dma_noncontig_alloc()
552 			dmab->dev.type = SNDRV_DMA_TYPE_DEV_SG_FALLBACK;  in snd_dma_noncontig_alloc()
553 		return snd_dma_sg_fallback_alloc(dmab, size);  in snd_dma_noncontig_alloc()
559 	dmab->dev.need_sync = dma_need_sync(dmab->dev.dev,  in snd_dma_noncontig_alloc()
561 	p = dma_vmap_noncontiguous(dmab->dev.dev, size, sgt);  in snd_dma_noncontig_alloc()
563 		dmab->private_data = sgt;  in snd_dma_noncontig_alloc()
565 		dmab->addr = snd_sgbuf_get_addr(dmab, 0);  in snd_dma_noncontig_alloc()
567 		dma_free_noncontiguous(dmab->dev.dev, size, sgt, dmab->dev.dir);  in snd_dma_noncontig_alloc()
572 static void snd_dma_noncontig_free(struct snd_dma_buffer *dmab)  in snd_dma_noncontig_free()  argument
574 	dma_vunmap_noncontiguous(dmab->dev.dev, dmab->area);  in snd_dma_noncontig_free()
575 	dma_free_noncontiguous(dmab->dev.dev, dmab->bytes, dmab->private_data,  in snd_dma_noncontig_free()
576 			       dmab->dev.dir);  in snd_dma_noncontig_free()
579 static int snd_dma_noncontig_mmap(struct snd_dma_buffer *dmab,  in snd_dma_noncontig_mmap()  argument
582 	return dma_mmap_noncontiguous(dmab->dev.dev, area,  in snd_dma_noncontig_mmap()
583 				      dmab->bytes, dmab->private_data);  in snd_dma_noncontig_mmap()
586 static void snd_dma_noncontig_sync(struct snd_dma_buffer *dmab,  in snd_dma_noncontig_sync()  argument
590 		if (dmab->dev.dir == DMA_TO_DEVICE)  in snd_dma_noncontig_sync()
592 		invalidate_kernel_vmap_range(dmab->area, dmab->bytes);  in snd_dma_noncontig_sync()
593 		dma_sync_sgtable_for_cpu(dmab->dev.dev, dmab->private_data,  in snd_dma_noncontig_sync()
594 					 dmab->dev.dir);  in snd_dma_noncontig_sync()
596 		if (dmab->dev.dir == DMA_FROM_DEVICE)  in snd_dma_noncontig_sync()
598 		flush_kernel_vmap_range(dmab->area, dmab->bytes);  in snd_dma_noncontig_sync()
599 		dma_sync_sgtable_for_device(dmab->dev.dev, dmab->private_data,  in snd_dma_noncontig_sync()
600 					    dmab->dev.dir);  in snd_dma_noncontig_sync()
604 static inline void snd_dma_noncontig_iter_set(struct snd_dma_buffer *dmab,  in snd_dma_noncontig_iter_set()  argument
608 	struct sg_table *sgt = dmab->private_data;  in snd_dma_noncontig_iter_set()
614 static dma_addr_t snd_dma_noncontig_get_addr(struct snd_dma_buffer *dmab,  in snd_dma_noncontig_get_addr()  argument
619 	snd_dma_noncontig_iter_set(dmab, &iter.base, offset);  in snd_dma_noncontig_get_addr()
624 static struct page *snd_dma_noncontig_get_page(struct snd_dma_buffer *dmab,  in snd_dma_noncontig_get_page()  argument
629 	snd_dma_noncontig_iter_set(dmab, &iter, offset);  in snd_dma_noncontig_get_page()
635 snd_dma_noncontig_get_chunk_size(struct snd_dma_buffer *dmab,  in snd_dma_noncontig_get_chunk_size()  argument
644 	snd_dma_noncontig_iter_set(dmab, &iter.base, start);  in snd_dma_noncontig_get_chunk_size()
676 static void *snd_dma_sg_wc_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_sg_wc_alloc()  argument
678 	void *p = snd_dma_noncontig_alloc(dmab, size);  in snd_dma_sg_wc_alloc()
679 	struct sg_table *sgt = dmab->private_data;  in snd_dma_sg_wc_alloc()
684 	if (dmab->dev.type != SNDRV_DMA_TYPE_DEV_WC_SG)  in snd_dma_sg_wc_alloc()
691 static void snd_dma_sg_wc_free(struct snd_dma_buffer *dmab)  in snd_dma_sg_wc_free()  argument
693 	struct sg_table *sgt = dmab->private_data;  in snd_dma_sg_wc_free()
698 	snd_dma_noncontig_free(dmab);  in snd_dma_sg_wc_free()
701 static int snd_dma_sg_wc_mmap(struct snd_dma_buffer *dmab,  in snd_dma_sg_wc_mmap()  argument
705 	return dma_mmap_noncontiguous(dmab->dev.dev, area,  in snd_dma_sg_wc_mmap()
706 				      dmab->bytes, dmab->private_data);  in snd_dma_sg_wc_mmap()
726 static void __snd_dma_sg_fallback_free(struct snd_dma_buffer *dmab,  in __snd_dma_sg_fallback_free()  argument
729 	bool wc = dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK;  in __snd_dma_sg_fallback_free()
739 static void *snd_dma_sg_fallback_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_sg_fallback_alloc()  argument
745 	bool wc = dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK;  in snd_dma_sg_fallback_alloc()
760 		p = do_alloc_pages(dmab->dev.dev, PAGE_SIZE, &sgbuf->addrs[i], wc);  in snd_dma_sg_fallback_alloc()
769 	dmab->private_data = sgbuf;  in snd_dma_sg_fallback_alloc()
771 	dmab->addr = snd_sgbuf_get_addr(dmab, 0);  in snd_dma_sg_fallback_alloc()
775 	__snd_dma_sg_fallback_free(dmab, sgbuf);  in snd_dma_sg_fallback_alloc()
779 static void snd_dma_sg_fallback_free(struct snd_dma_buffer *dmab)  in snd_dma_sg_fallback_free()  argument
781 	vunmap(dmab->area);  in snd_dma_sg_fallback_free()
782 	__snd_dma_sg_fallback_free(dmab, dmab->private_data);  in snd_dma_sg_fallback_free()
785 static int snd_dma_sg_fallback_mmap(struct snd_dma_buffer *dmab,  in snd_dma_sg_fallback_mmap()  argument
788 	struct snd_dma_sg_fallback *sgbuf = dmab->private_data;  in snd_dma_sg_fallback_mmap()
790 	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK)  in snd_dma_sg_fallback_mmap()
809 static void *snd_dma_noncoherent_alloc(struct snd_dma_buffer *dmab, size_t size)  in snd_dma_noncoherent_alloc()  argument
813 	p = dma_alloc_noncoherent(dmab->dev.dev, size, &dmab->addr,  in snd_dma_noncoherent_alloc()
814 				  dmab->dev.dir, DEFAULT_GFP);  in snd_dma_noncoherent_alloc()
816 		dmab->dev.need_sync = dma_need_sync(dmab->dev.dev, dmab->addr);  in snd_dma_noncoherent_alloc()
820 static void snd_dma_noncoherent_free(struct snd_dma_buffer *dmab)  in snd_dma_noncoherent_free()  argument
822 	dma_free_noncoherent(dmab->dev.dev, dmab->bytes, dmab->area,  in snd_dma_noncoherent_free()
823 			     dmab->addr, dmab->dev.dir);  in snd_dma_noncoherent_free()
826 static int snd_dma_noncoherent_mmap(struct snd_dma_buffer *dmab,  in snd_dma_noncoherent_mmap()  argument
830 	return dma_mmap_pages(dmab->dev.dev, area,  in snd_dma_noncoherent_mmap()
832 			      virt_to_page(dmab->area));  in snd_dma_noncoherent_mmap()
835 static void snd_dma_noncoherent_sync(struct snd_dma_buffer *dmab,  in snd_dma_noncoherent_sync()  argument
839 		if (dmab->dev.dir != DMA_TO_DEVICE)  in snd_dma_noncoherent_sync()
840 			dma_sync_single_for_cpu(dmab->dev.dev, dmab->addr,  in snd_dma_noncoherent_sync()
841 						dmab->bytes, dmab->dev.dir);  in snd_dma_noncoherent_sync()
843 		if (dmab->dev.dir != DMA_FROM_DEVICE)  in snd_dma_noncoherent_sync()
844 			dma_sync_single_for_device(dmab->dev.dev, dmab->addr,  in snd_dma_noncoherent_sync()
845 						   dmab->bytes, dmab->dev.dir);  in snd_dma_noncoherent_sync()
882 static const struct snd_malloc_ops *snd_dma_get_ops(struct snd_dma_buffer *dmab)  in snd_dma_get_ops()  argument
884 	if (WARN_ON_ONCE(!dmab))  in snd_dma_get_ops()
886 	if (WARN_ON_ONCE(dmab->dev.type <= SNDRV_DMA_TYPE_UNKNOWN ||  in snd_dma_get_ops()
887 			 dmab->dev.type >= ARRAY_SIZE(snd_dma_ops)))  in snd_dma_get_ops()
889 	return snd_dma_ops[dmab->dev.type];  in snd_dma_get_ops()