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
10struct 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
20int register_trapped_io(struct trapped_io *tiop);
21int handle_trapped_io(struct pt_regs *regs, unsigned long address);
22
23void __iomem *match_trapped_io_handler(struct list_head *list,
24 unsigned long offset,
25 unsigned long size);
26
27#ifdef CONFIG_HAS_IOMEM
28extern struct list_head trapped_mem;
29
30static 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
40extern struct list_head trapped_io;
41
42static 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
59
