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wdenk507bbe32004-04-18 21:13:41 +00001/*
2 * include/asm-microblaze/io.h -- Misc I/O operations
3 *
4 * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au>
5 * Copyright (C) 2001,02 NEC Corporation
6 * Copyright (C) 2001,02 Miles Bader <miles@gnu.org>
7 *
8 * This file is subject to the terms and conditions of the GNU General
9 * Public License. See the file COPYING in the main directory of this
10 * archive for more details.
11 *
12 * Written by Miles Bader <miles@gnu.org>
13 * Microblaze port by John Williams
14 */
15
16#ifndef __MICROBLAZE_IO_H__
17#define __MICROBLAZE_IO_H__
18
19#define IO_SPACE_LIMIT 0xFFFFFFFF
20
21#define readb(addr) \
22 ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
23#define readw(addr) \
24 ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
25#define readl(addr) \
26 ({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; })
27
28#define writeb(b, addr) \
29 (void)((*(volatile unsigned char *) (addr)) = (b))
30#define writew(b, addr) \
31 (void)((*(volatile unsigned short *) (addr)) = (b))
32#define writel(b, addr) \
33 (void)((*(volatile unsigned int *) (addr)) = (b))
34
35#define memset_io(a,b,c) memset((void *)(a),(b),(c))
36#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
37#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
38
39#define inb(addr) readb (addr)
40#define inw(addr) readw (addr)
41#define inl(addr) readl (addr)
42#define outb(x, addr) ((void) writeb (x, addr))
43#define outw(x, addr) ((void) writew (x, addr))
44#define outl(x, addr) ((void) writel (x, addr))
45
46/* Some #definitions to keep strange Xilinx code happy */
47#define in_8(addr) readb (addr)
48#define in_be16(addr) readw (addr)
49#define in_be32(addr) readl (addr)
50
51#define out_8(addr,x ) outb (x,addr)
52#define out_be16(addr,x ) outw (x,addr)
53#define out_be32(addr,x ) outl (x,addr)
54
55
56#define inb_p(port) inb((port))
57#define outb_p(val, port) outb((val), (port))
58#define inw_p(port) inw((port))
59#define outw_p(val, port) outw((val), (port))
60#define inl_p(port) inl((port))
61#define outl_p(val, port) outl((val), (port))
62
63/* Some defines to keep the MTD flash drivers happy */
64
65#define __raw_readb readb
66#define __raw_readw readw
67#define __raw_readl readl
68#define __raw_writeb writeb
69#define __raw_writew writew
70#define __raw_writel writel
71
72static inline void io_insb (unsigned long port, void *dst, unsigned long count)
73{
74 unsigned char *p = dst;
75 while (count--)
76 *p++ = inb (port);
77}
78static inline void io_insw (unsigned long port, void *dst, unsigned long count)
79{
80 unsigned short *p = dst;
81 while (count--)
82 *p++ = inw (port);
83}
84static inline void io_insl (unsigned long port, void *dst, unsigned long count)
85{
86 unsigned long *p = dst;
87 while (count--)
88 *p++ = inl (port);
89}
90
91static inline void
92io_outsb (unsigned long port, const void *src, unsigned long count)
93{
94 const unsigned char *p = src;
95 while (count--)
96 outb (*p++, port);
97}
98static inline void
99io_outsw (unsigned long port, const void *src, unsigned long count)
100{
101 const unsigned short *p = src;
102 while (count--)
103 outw (*p++, port);
104}
105static inline void
106io_outsl (unsigned long port, const void *src, unsigned long count)
107{
108 const unsigned long *p = src;
109 while (count--)
110 outl (*p++, port);
111}
112
113#define outsb(a,b,l) io_outsb(a,b,l)
114#define outsw(a,b,l) io_outsw(a,b,l)
115#define outsl(a,b,l) io_outsl(a,b,l)
116
117#define insb(a,b,l) io_insb(a,b,l)
118#define insw(a,b,l) io_insw(a,b,l)
119#define insl(a,b,l) io_insl(a,b,l)
120
121
122#define iounmap(addr) ((void)0)
123#define ioremap(physaddr, size) (physaddr)
124#define ioremap_nocache(physaddr, size) (physaddr)
125#define ioremap_writethrough(physaddr, size) (physaddr)
126#define ioremap_fullcache(physaddr, size) (physaddr)
127
128#endif /* __MICROBLAZE_IO_H__ */