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gerrit-public.fairphone.software / kernel / msm-5.4 / b84ca92e1672432aac43cccaaa572881e7cc9fdd / . / arch / sparc / include / asm / dma-mapping.h
blob: 5b1b52a04ad6283fb67308d9bf84b08494870140 [file] [log] [blame]
Sam Ravnborga439fe52008-07-27 23:00:59 +0200[diff] [blame]1#ifndef ___ASM_SPARC_DMA_MAPPING_H
2#define ___ASM_SPARC_DMA_MAPPING_H
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]3
4#include <linux/scatterlist.h>
5#include <linux/mm.h>
FUJITA Tomonori02f7a182009-08-10 11:53:13 +0900[diff] [blame]6#include <linux/dma-debug.h>
FUJITA Tomonorib9f69f42009-05-14 16:23:08 +0000[diff] [blame]7
8#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
9
Sam Ravnborgf05a6862014-05-16 23:25:50 +0200[diff] [blame]10int dma_supported(struct device *dev, u64 mask);
FUJITA Tomonorib9f69f42009-05-14 16:23:08 +0000[diff] [blame]11
FUJITA Tomonorib9f69f42009-05-14 16:23:08 +0000[diff] [blame]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)
FUJITA Tomonorib9f69f42009-05-14 16:23:08 +0000[diff] [blame]14
Sam Ravnborg87e677c2012-05-26 15:56:03 +0200[diff] [blame]15extern struct dma_map_ops *dma_ops;
16extern struct dma_map_ops *leon_dma_ops;
17extern struct dma_map_ops pci32_dma_ops;
18
FUJITA Tomonoriee664a92009-08-10 11:53:16 +0900[diff] [blame]19extern struct bus_type pci_bus_type;
FUJITA Tomonori02f7a182009-08-10 11:53:13 +0900[diff] [blame]20
21static inline struct dma_map_ops *get_dma_ops(struct device *dev)
22{
Andreas Larssonb84ca922014-09-08 09:48:52 +0200[diff] [blame^]23#ifdef CONFIG_SPARC_LEON
Sam Ravnborg87e677c2012-05-26 15:56:03 +0200[diff] [blame]24 if (sparc_cpu_model == sparc_leon)
25 return leon_dma_ops;
Andreas Larssonb84ca922014-09-08 09:48:52 +0200[diff] [blame^]26#endif
27#if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
28 if (dev->bus == &pci_bus_type)
FUJITA Tomonoriee664a92009-08-10 11:53:16 +0900[diff] [blame]29 return &pci32_dma_ops;
30#endif
FUJITA Tomonori02f7a182009-08-10 11:53:13 +0900[diff] [blame]31 return dma_ops;
32}
33
34#include <asm-generic/dma-mapping-common.h>
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]35
Andrzej Pietrasiewiczc4162582012-03-27 14:56:55 +0200[diff] [blame]36#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
37
38static inline void *dma_alloc_attrs(struct device *dev, size_t size,
39 dma_addr_t *dma_handle, gfp_t flag,
40 struct dma_attrs *attrs)
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]41{
FUJITA Tomonori02f7a182009-08-10 11:53:13 +0900[diff] [blame]42 struct dma_map_ops *ops = get_dma_ops(dev);
FUJITA Tomonori451d7402009-08-10 11:53:17 +0900[diff] [blame]43 void *cpu_addr;
FUJITA Tomonori02f7a182009-08-10 11:53:13 +0900[diff] [blame]44
Andrzej Pietrasiewiczc4162582012-03-27 14:56:55 +0200[diff] [blame]45 cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
FUJITA Tomonori451d7402009-08-10 11:53:17 +0900[diff] [blame]46 debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
47 return cpu_addr;
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]48}
49
Andrzej Pietrasiewiczc4162582012-03-27 14:56:55 +0200[diff] [blame]50#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
51
52static inline void dma_free_attrs(struct device *dev, size_t size,
53 void *cpu_addr, dma_addr_t dma_handle,
54 struct dma_attrs *attrs)
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]55{
FUJITA Tomonori02f7a182009-08-10 11:53:13 +0900[diff] [blame]56 struct dma_map_ops *ops = get_dma_ops(dev);
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]57
FUJITA Tomonori451d7402009-08-10 11:53:17 +0900[diff] [blame]58 debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
Andrzej Pietrasiewiczc4162582012-03-27 14:56:55 +0200[diff] [blame]59 ops->free(dev, size, cpu_addr, dma_handle, attrs);
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]60}
61
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]62static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
63{
Shuah Khan5d346d12012-10-25 18:31:42 -0600[diff] [blame]64 debug_dma_mapping_error(dev, dma_addr);
FUJITA Tomonorid6986412009-05-14 16:23:11 +0000[diff] [blame]65 return (dma_addr == DMA_ERROR_CODE);
66}
67
FUJITA Tomonori34900422010-03-10 15:23:35 -0800[diff] [blame]68static inline int dma_set_mask(struct device *dev, u64 mask)
69{
70#ifdef CONFIG_PCI
71 if (dev->bus == &pci_bus_type) {
72 if (!dev->dma_mask || !dma_supported(dev, mask))
73 return -EINVAL;
74 *dev->dma_mask = mask;
75 return 0;
76 }
77#endif
78 return -EINVAL;
79}
80
Sam Ravnborga439fe52008-07-27 23:00:59 +0200[diff] [blame]81#endif