diff options
Diffstat (limited to 'include/asm-sh/io_trapped.h')
-rw-r--r-- | include/asm-sh/io_trapped.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/asm-sh/io_trapped.h b/include/asm-sh/io_trapped.h new file mode 100644 index 000000000000..f1251d4f0ba9 --- /dev/null +++ b/include/asm-sh/io_trapped.h | |||
@@ -0,0 +1,58 @@ | |||
1 | #ifndef __ASM_SH_IO_TRAPPED_H | ||
2 | #define __ASM_SH_IO_TRAPPED_H | ||
3 | |||
4 | #include <linux/list.h> | ||
5 | #include <linux/ioport.h> | ||
6 | #include <asm/page.h> | ||
7 | |||
8 | #define IO_TRAPPED_MAGIC 0xfeedbeef | ||
9 | |||
10 | struct trapped_io { | ||
11 | unsigned int magic; | ||
12 | struct resource *resource; | ||
13 | unsigned int num_resources; | ||
14 | unsigned int minimum_bus_width; | ||
15 | struct list_head list; | ||
16 | void __iomem *virt_base; | ||
17 | } __aligned(PAGE_SIZE); | ||
18 | |||
19 | #ifdef CONFIG_IO_TRAPPED | ||
20 | int register_trapped_io(struct trapped_io *tiop); | ||
21 | int handle_trapped_io(struct pt_regs *regs, unsigned long address); | ||
22 | |||
23 | void __iomem *match_trapped_io_handler(struct list_head *list, | ||
24 | unsigned long offset, | ||
25 | unsigned long size); | ||
26 | |||
27 | #ifdef CONFIG_HAS_IOMEM | ||
28 | extern struct list_head trapped_mem; | ||
29 | |||
30 | static inline void __iomem * | ||
31 | __ioremap_trapped(unsigned long offset, unsigned long size) | ||
32 | { | ||
33 | return match_trapped_io_handler(&trapped_mem, offset, size); | ||
34 | } | ||
35 | #else | ||
36 | #define __ioremap_trapped(offset, size) NULL | ||
37 | #endif | ||
38 | |||
39 | #ifdef CONFIG_HAS_IOPORT | ||
40 | extern struct list_head trapped_io; | ||
41 | |||
42 | static inline void __iomem * | ||
43 | __ioport_map_trapped(unsigned long offset, unsigned long size) | ||
44 | { | ||
45 | return match_trapped_io_handler(&trapped_io, offset, size); | ||
46 | } | ||
47 | #else | ||
48 | #define __ioport_map_trapped(offset, size) NULL | ||
49 | #endif | ||
50 | |||
51 | #else | ||
52 | #define register_trapped_io(tiop) (-1) | ||
53 | #define handle_trapped_io(tiop, address) 0 | ||
54 | #define __ioremap_trapped(offset, size) NULL | ||
55 | #define __ioport_map_trapped(offset, size) NULL | ||
56 | #endif | ||
57 | |||
58 | #endif /* __ASM_SH_IO_TRAPPED_H */ | ||