1 /* SPDX-License-Identifier: GPL-2.0 */
9 #include <linux/dma-mapping.h>
16 	void *(*alloc)(struct device *dev, size_t size,
19 	void (*free)(struct device *dev, size_t size, void *vaddr,
21 	struct page *(*alloc_pages)(struct device *dev, size_t size,
24 	void (*free_pages)(struct device *dev, size_t size, struct page *vaddr,
26 	void *(*alloc_noncoherent)(struct device *dev, size_t size,
29 	void (*free_noncoherent)(struct device *dev, size_t size, void *vaddr,
35 			void *cpu_addr, dma_addr_t dma_addr, size_t size,
38 	dma_addr_t (*map_page)(struct device *dev, struct page *page,
39 			unsigned long offset, size_t size,
42 			size_t size, enum dma_data_direction dir,
53 			size_t size, enum dma_data_direction dir,
56 			size_t size, enum dma_data_direction dir,
59 			size_t size, enum dma_data_direction dir);
61 			dma_addr_t dma_handle, size_t size,
67 	void (*cache_sync)(struct device *dev, void *vaddr, size_t size,
81 #include <asm/dma-mapping.h>
85 	if (dev->dma_ops)  in get_dma_ops()
86 		return dev->dma_ops;  in get_dma_ops()
87 	return get_arch_dma_ops(dev->bus);  in get_dma_ops()
93 	dev->dma_ops = dma_ops;  in set_dma_ops()
111 	if (dev && dev->cma_area)  in dev_get_cma_area()
112 		return dev->cma_area;  in dev_get_cma_area()
117 int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
120 struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
122 bool dma_release_from_contiguous(struct device *dev, struct page *pages,
124 struct page *dma_alloc_contiguous(struct device *dev, size_t size, gfp_t gfp);
125 void dma_free_contiguous(struct device *dev, struct page *page, size_t size);
127 void dma_contiguous_early_fixup(phys_addr_t base, unsigned long size);
136 static inline int dma_contiguous_reserve_area(phys_addr_t size,  in dma_contiguous_reserve_area()  argument
140 	return -ENOSYS;  in dma_contiguous_reserve_area()
142 static inline struct page *dma_alloc_from_contiguous(struct device *dev,  in dma_alloc_from_contiguous()
148 		struct page *pages, int count)  in dma_release_from_contiguous()
153 static inline struct page *dma_alloc_contiguous(struct device *dev, size_t size,  in dma_alloc_contiguous()  argument
158 static inline void dma_free_contiguous(struct device *dev, struct page *page,  in dma_free_contiguous()  argument
159 		size_t size)  in dma_free_contiguous()  argument
161 	__free_pages(page, get_order(size));  in dma_free_contiguous()
173 		dma_addr_t device_addr, size_t size);
175 int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size,
179 		void *cpu_addr, size_t size, int *ret);
181 void *dma_alloc_from_global_coherent(struct device *dev, ssize_t size,
185 		size_t size, int *ret);
189 		phys_addr_t phys_addr, dma_addr_t device_addr, size_t size)  in dma_declare_coherent_memory()  argument
191 	return -ENOSYS;  in dma_declare_coherent_memory()
194 #define dma_alloc_from_dev_coherent(dev, size, handle, ret) (0)  argument
200 		ssize_t size, dma_addr_t *dma_handle)  in dma_alloc_from_global_coherent()  argument
209 		void *cpu_addr, size_t size, int *ret)  in dma_mmap_from_global_coherent()  argument
216 		void *cpu_addr, dma_addr_t dma_addr, size_t size,
219 		void *cpu_addr, dma_addr_t dma_addr, size_t size,
221 struct page *dma_common_alloc_pages(struct device *dev, size_t size,
223 void dma_common_free_pages(struct device *dev, size_t size, struct page *vaddr,
226 struct page **dma_common_find_pages(void *cpu_addr);
227 void *dma_common_contiguous_remap(struct page *page, size_t size, pgprot_t prot,
229 void *dma_common_pages_remap(struct page **pages, size_t size, pgprot_t prot,
231 void dma_common_free_remap(void *cpu_addr, size_t size);
233 struct page *dma_alloc_from_pool(struct device *dev, size_t size,
236 bool dma_free_from_pool(struct device *dev, void *start, size_t size);
239 #include <asm/dma-coherence.h>
245 	return dev->dma_coherent;  in dev_is_dma_coherent()
254 void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
256 void arch_dma_free(struct device *dev, size_t size, void *cpu_addr,
261  * Page protection so that devices that can't snoop CPU caches can use the
283 	return prot;	/* no protection bits supported without page tables */  in dma_pgprot()
288 void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
291 static inline void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,  in arch_sync_dma_for_device()  argument
298 void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
301 static inline void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,  in arch_sync_dma_for_cpu()  argument
316 void arch_dma_prep_coherent(struct page *page, size_t size);
318 static inline void arch_dma_prep_coherent(struct page *page, size_t size)  in arch_dma_prep_coherent()  argument
324 void arch_dma_mark_clean(phys_addr_t paddr, size_t size);
326 static inline void arch_dma_mark_clean(phys_addr_t paddr, size_t size)  in arch_dma_mark_clean()  argument
331 void *arch_dma_set_uncached(void *addr, size_t size);
332 void arch_dma_clear_uncached(void *addr, size_t size);
335 void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
339 		u64 size, const struct iommu_ops *iommu, bool coherent)  in arch_setup_dma_ops()  argument