1#ifndef ___ASM_SPARC_DMA_MAPPING_H
 2#define ___ASM_SPARC_DMA_MAPPING_H
 3
 4#include <linux/scatterlist.h>
 5#include <linux/mm.h>
 6#include <linux/dma-debug.h>
 7
 8#define DMA_ERROR_CODE	(~(dma_addr_t)0x0)
 9
10extern int dma_supported(struct device *dev, u64 mask);
11
12#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
13#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
14
15extern struct dma_map_ops *dma_ops, pci32_dma_ops;
16extern struct bus_type pci_bus_type;
17
18static inline struct dma_map_ops *get_dma_ops(struct device *dev)
19{
20#if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
21	if (dev->bus == &pci_bus_type)
22		return &pci32_dma_ops;
23#endif
24	return dma_ops;
25}
26
27#include <asm-generic/dma-mapping-common.h>
28
29static inline void *dma_alloc_coherent(struct device *dev, size_t size,
30				       dma_addr_t *dma_handle, gfp_t flag)
31{
32	struct dma_map_ops *ops = get_dma_ops(dev);
33	void *cpu_addr;
34
35	cpu_addr = ops->alloc_coherent(dev, size, dma_handle, flag);
36	debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
37	return cpu_addr;
38}
39
40static inline void dma_free_coherent(struct device *dev, size_t size,
41				     void *cpu_addr, dma_addr_t dma_handle)
42{
43	struct dma_map_ops *ops = get_dma_ops(dev);
44
45	debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
46	ops->free_coherent(dev, size, cpu_addr, dma_handle);
47}
48
49static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
50{
51	return (dma_addr == DMA_ERROR_CODE);
52}
53
54static inline int dma_set_mask(struct device *dev, u64 mask)
55{
56#ifdef CONFIG_PCI
57	if (dev->bus == &pci_bus_type) {
58		if (!dev->dma_mask || !dma_supported(dev, mask))
59			return -EINVAL;
60		*dev->dma_mask = mask;
61		return 0;
62	}
63#endif
64	return -EINVAL;
65}
66
67#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef ___ASM_SPARC_DMA_MAPPING_H
 3#define ___ASM_SPARC_DMA_MAPPING_H
 4
 5extern const struct dma_map_ops *dma_ops;
 
 
 6
 7static inline const struct dma_map_ops *get_arch_dma_ops(void)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 8{
 9	/* sparc32 uses per-device dma_ops */
10	return IS_ENABLED(CONFIG_SPARC64) ? dma_ops : NULL;
 
 
 
 
 
 
 
11}
12
13#endif