xref: /openbsd/sys/dev/pci/drm/include/linux/io-mapping.h (revision c06a237e) 
1 /* Public domain. */
2 
3 #ifndef _LINUX_IO_MAPPING_H
4 #define _LINUX_IO_MAPPING_H
5 
6 #include <linux/types.h>
7 
8 struct io_mapping {
9 	resource_size_t base;
10 	unsigned long size;
11 	void *iomem;
12 };
13 
14 static inline void *
io_mapping_map_wc(struct io_mapping * map,unsigned long off,unsigned long size)15 io_mapping_map_wc(struct io_mapping *map, unsigned long off, unsigned long size)
16 {
17 	return ((uint8_t *)map->iomem + off);
18 }
19 
20 static inline void
io_mapping_unmap(void * va)21 io_mapping_unmap(void *va)
22 {
23 }
24 
25 static inline void *
io_mapping_map_local_wc(struct io_mapping * map,unsigned long off)26 io_mapping_map_local_wc(struct io_mapping *map, unsigned long off)
27 {
28 	return ((uint8_t *)map->iomem + off);
29 }
30 
31 static inline void
io_mapping_unmap_local(void * va)32 io_mapping_unmap_local(void *va)
33 {
34 }
35 
36 static inline void *
io_mapping_map_atomic_wc(struct io_mapping * map,unsigned long off)37 io_mapping_map_atomic_wc(struct io_mapping *map, unsigned long off)
38 {
39 	return ((uint8_t *)map->iomem + off);
40 }
41 
42 static inline void
io_mapping_unmap_atomic(void * va)43 io_mapping_unmap_atomic(void *va)
44 {
45 }
46 
47 #endif
48