1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_DMA_MAPPING_H
 3#define _ASM_DMA_MAPPING_H
 4
 5#include <linux/swiotlb.h>
 
 
 
 6
 7extern const struct dma_map_ops jazz_dma_ops;
 
 
 
 
 8
 9static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
10{
11#if defined(CONFIG_MACH_JAZZ)
12	return &jazz_dma_ops;
13#else
14	return NULL;
15#endif
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
16}
 
 
 
 
 
 
 
17
18#endif /* _ASM_DMA_MAPPING_H */

 
  1#ifndef _ASM_DMA_MAPPING_H
  2#define _ASM_DMA_MAPPING_H
  3
  4#include <asm/scatterlist.h>
  5#include <asm/dma-coherence.h>
  6#include <asm/cache.h>
  7#include <asm-generic/dma-coherent.h>
  8
  9#ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */
 10#include <dma-coherence.h>
 11#endif
 12
 13extern struct dma_map_ops *mips_dma_map_ops;
 14
 15static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 16{
 17	if (dev && dev->archdata.dma_ops)
 18		return dev->archdata.dma_ops;
 19	else
 20		return mips_dma_map_ops;
 21}
 22
 23static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
 24{
 25	if (!dev->dma_mask)
 26		return 0;
 27
 28	return addr + size <= *dev->dma_mask;
 29}
 30
 31static inline void dma_mark_clean(void *addr, size_t size) {}
 32
 33#include <asm-generic/dma-mapping-common.h>
 34
 35static inline int dma_supported(struct device *dev, u64 mask)
 36{
 37	struct dma_map_ops *ops = get_dma_ops(dev);
 38	return ops->dma_supported(dev, mask);
 39}
 40
 41static inline int dma_mapping_error(struct device *dev, u64 mask)
 42{
 43	struct dma_map_ops *ops = get_dma_ops(dev);
 44
 45	debug_dma_mapping_error(dev, mask);
 46	return ops->mapping_error(dev, mask);
 47}
 48
 49static inline int
 50dma_set_mask(struct device *dev, u64 mask)
 51{
 52	struct dma_map_ops *ops = get_dma_ops(dev);
 53
 54	if(!dev->dma_mask || !dma_supported(dev, mask))
 55		return -EIO;
 56
 57	if (ops->set_dma_mask)
 58		return ops->set_dma_mask(dev, mask);
 59
 60	*dev->dma_mask = mask;
 61
 62	return 0;
 63}
 64
 65extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 66	       enum dma_data_direction direction);
 67
 68#define dma_alloc_coherent(d,s,h,f)	dma_alloc_attrs(d,s,h,f,NULL)
 69
 70static inline void *dma_alloc_attrs(struct device *dev, size_t size,
 71				    dma_addr_t *dma_handle, gfp_t gfp,
 72				    struct dma_attrs *attrs)
 73{
 74	void *ret;
 75	struct dma_map_ops *ops = get_dma_ops(dev);
 76
 77	ret = ops->alloc(dev, size, dma_handle, gfp, attrs);
 78
 79	debug_dma_alloc_coherent(dev, size, *dma_handle, ret);
 80
 81	return ret;
 82}
 83
 84#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
 85
 86static inline void dma_free_attrs(struct device *dev, size_t size,
 87				  void *vaddr, dma_addr_t dma_handle,
 88				  struct dma_attrs *attrs)
 89{
 90	struct dma_map_ops *ops = get_dma_ops(dev);
 91
 92	ops->free(dev, size, vaddr, dma_handle, attrs);
 93
 94	debug_dma_free_coherent(dev, size, vaddr, dma_handle);
 95}
 96
 97
 98void *dma_alloc_noncoherent(struct device *dev, size_t size,
 99			   dma_addr_t *dma_handle, gfp_t flag);
100
101void dma_free_noncoherent(struct device *dev, size_t size,
102			 void *vaddr, dma_addr_t dma_handle);
103
104#endif /* _ASM_DMA_MAPPING_H */