xref: /openbmc/linux/kernel/dma/debug.h (revision c4f7ac64) 
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2008 Advanced Micro Devices, Inc.
4  *
5  * Author: Joerg Roedel <joerg.roedel@amd.com>
6  */
7 
8 #ifndef _KERNEL_DMA_DEBUG_H
9 #define _KERNEL_DMA_DEBUG_H
10 
11 #ifdef CONFIG_DMA_API_DEBUG
12 extern void debug_dma_map_page(struct device *dev, struct page *page,
13 			       size_t offset, size_t size,
14 			       int direction, dma_addr_t dma_addr);
15 
16 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
17 				 size_t size, int direction);
18 
19 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
20 			     int nents, int mapped_ents, int direction);
21 
22 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
23 			       int nelems, int dir);
24 
25 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
26 				     dma_addr_t dma_addr, void *virt);
27 
28 extern void debug_dma_free_coherent(struct device *dev, size_t size,
29 				    void *virt, dma_addr_t addr);
30 
31 extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
32 				   size_t size, int direction,
33 				   dma_addr_t dma_addr);
34 
35 extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
36 				     size_t size, int direction);
37 
38 extern void debug_dma_sync_single_for_cpu(struct device *dev,
39 					  dma_addr_t dma_handle, size_t size,
40 					  int direction);
41 
42 extern void debug_dma_sync_single_for_device(struct device *dev,
43 					     dma_addr_t dma_handle,
44 					     size_t size, int direction);
45 
46 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
47 				      struct scatterlist *sg,
48 				      int nelems, int direction);
49 
50 extern void debug_dma_sync_sg_for_device(struct device *dev,
51 					 struct scatterlist *sg,
52 					 int nelems, int direction);
53 #else /* CONFIG_DMA_API_DEBUG */
54 static inline void debug_dma_map_page(struct device *dev, struct page *page,
55 				      size_t offset, size_t size,
56 				      int direction, dma_addr_t dma_addr)
57 {
58 }
59 
60 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
61 					size_t size, int direction)
62 {
63 }
64 
65 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
66 				    int nents, int mapped_ents, int direction)
67 {
68 }
69 
70 static inline void debug_dma_unmap_sg(struct device *dev,
71 				      struct scatterlist *sglist,
72 				      int nelems, int dir)
73 {
74 }
75 
76 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
77 					    dma_addr_t dma_addr, void *virt)
78 {
79 }
80 
81 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
82 					   void *virt, dma_addr_t addr)
83 {
84 }
85 
86 static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
87 					  size_t size, int direction,
88 					  dma_addr_t dma_addr)
89 {
90 }
91 
92 static inline void debug_dma_unmap_resource(struct device *dev,
93 					    dma_addr_t dma_addr, size_t size,
94 					    int direction)
95 {
96 }
97 
98 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
99 						 dma_addr_t dma_handle,
100 						 size_t size, int direction)
101 {
102 }
103 
104 static inline void debug_dma_sync_single_for_device(struct device *dev,
105 						    dma_addr_t dma_handle,
106 						    size_t size, int direction)
107 {
108 }
109 
110 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
111 					     struct scatterlist *sg,
112 					     int nelems, int direction)
113 {
114 }
115 
116 static inline void debug_dma_sync_sg_for_device(struct device *dev,
117 						struct scatterlist *sg,
118 						int nelems, int direction)
119 {
120 }
121 #endif /* CONFIG_DMA_API_DEBUG */
122 #endif /* _KERNEL_DMA_DEBUG_H */
123