1 /*
2  *  linux/include/asm-arm/arch-ebsa285/io.h
3  *
4  *  Copyright (C) 1997-1999 Russell King
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  *  Modifications:
11  *   06-12-1997	RMK	Created.
12  *   07-04-1999	RMK	Major cleanup
13  */
14 #ifndef __ASM_ARM_ARCH_IO_H
15 #define __ASM_ARM_ARCH_IO_H
16 
17 #define IO_SPACE_LIMIT 0xffff
18 
19 /*
20  * Translation of various region addresses to virtual addresses
21  */
22 #define __io(a)			(PCIO_BASE + (a))
23 #if 1
24 #define __mem_pci(a)		((unsigned long)(a))
25 #define __mem_isa(a)		(PCIMEM_BASE + (unsigned long)(a))
26 #else
27 
___mem_pci(unsigned long a)28 static inline unsigned long ___mem_pci(unsigned long a)
29 {
30 	if (a <= 0xc0000000 || a >= 0xe0000000)
31 		BUG();
32 	return a;
33 }
34 
___mem_isa(unsigned long a)35 static inline unsigned long ___mem_isa(unsigned long a)
36 {
37 	if (a >= 16*1048576)
38 		BUG();
39 	return PCIMEM_BASE + a;
40 }
41 #define __mem_pci(a)		___mem_pci((unsigned long)(a))
42 #define __mem_isa(a)		___mem_isa((unsigned long)(a))
43 #endif
44 
45 /*
46  * Generic virtual read/write
47  */
48 #define __arch_getw(a)		(*(volatile unsigned short *)(a))
49 #define __arch_putw(v,a)	(*(volatile unsigned short *)(a) = (v))
50 
51 #define iomem_valid_addr(iomem,sz)	(1)
52 #define iomem_to_phys(iomem)		(iomem)
53 
54 #endif
55