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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
Michal Simek53ea9812008-07-11 10:10:31 +020019#include <asm/types.h>
20
wdenk507bbe32004-04-18 21:13:41 +000021#define IO_SPACE_LIMIT 0xFFFFFFFF
22
23#define readb(addr) \
24 ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
25#define readw(addr) \
26 ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
27#define readl(addr) \
Michal Simek1fbd0c32011-10-18 11:33:07 +020028 ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
wdenk507bbe32004-04-18 21:13:41 +000029
30#define writeb(b, addr) \
31 (void)((*(volatile unsigned char *) (addr)) = (b))
32#define writew(b, addr) \
33 (void)((*(volatile unsigned short *) (addr)) = (b))
34#define writel(b, addr) \
35 (void)((*(volatile unsigned int *) (addr)) = (b))
36
37#define memset_io(a,b,c) memset((void *)(a),(b),(c))
38#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
39#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
40
41#define inb(addr) readb (addr)
42#define inw(addr) readw (addr)
43#define inl(addr) readl (addr)
44#define outb(x, addr) ((void) writeb (x, addr))
45#define outw(x, addr) ((void) writew (x, addr))
46#define outl(x, addr) ((void) writel (x, addr))
47
48/* Some #definitions to keep strange Xilinx code happy */
49#define in_8(addr) readb (addr)
50#define in_be16(addr) readw (addr)
51#define in_be32(addr) readl (addr)
52
53#define out_8(addr,x ) outb (x,addr)
54#define out_be16(addr,x ) outw (x,addr)
55#define out_be32(addr,x ) outl (x,addr)
56
57
58#define inb_p(port) inb((port))
59#define outb_p(val, port) outb((val), (port))
60#define inw_p(port) inw((port))
61#define outw_p(val, port) outw((val), (port))
62#define inl_p(port) inl((port))
63#define outl_p(val, port) outl((val), (port))
64
65/* Some defines to keep the MTD flash drivers happy */
66
67#define __raw_readb readb
68#define __raw_readw readw
69#define __raw_readl readl
70#define __raw_writeb writeb
71#define __raw_writew writew
72#define __raw_writel writel
73
74static inline void io_insb (unsigned long port, void *dst, unsigned long count)
75{
76 unsigned char *p = dst;
77 while (count--)
78 *p++ = inb (port);
79}
80static inline void io_insw (unsigned long port, void *dst, unsigned long count)
81{
82 unsigned short *p = dst;
83 while (count--)
84 *p++ = inw (port);
85}
86static inline void io_insl (unsigned long port, void *dst, unsigned long count)
87{
88 unsigned long *p = dst;
89 while (count--)
90 *p++ = inl (port);
91}
92
93static inline void
94io_outsb (unsigned long port, const void *src, unsigned long count)
95{
96 const unsigned char *p = src;
97 while (count--)
98 outb (*p++, port);
99}
100static inline void
101io_outsw (unsigned long port, const void *src, unsigned long count)
102{
103 const unsigned short *p = src;
104 while (count--)
105 outw (*p++, port);
106}
107static inline void
108io_outsl (unsigned long port, const void *src, unsigned long count)
109{
110 const unsigned long *p = src;
111 while (count--)
112 outl (*p++, port);
113}
114
115#define outsb(a,b,l) io_outsb(a,b,l)
116#define outsw(a,b,l) io_outsw(a,b,l)
117#define outsl(a,b,l) io_outsl(a,b,l)
118
119#define insb(a,b,l) io_insb(a,b,l)
120#define insw(a,b,l) io_insw(a,b,l)
121#define insl(a,b,l) io_insl(a,b,l)
122
123
124#define iounmap(addr) ((void)0)
125#define ioremap(physaddr, size) (physaddr)
126#define ioremap_nocache(physaddr, size) (physaddr)
127#define ioremap_writethrough(physaddr, size) (physaddr)
128#define ioremap_fullcache(physaddr, size) (physaddr)
129
Haiying Wang3a197b22007-02-21 16:52:31 +0100130static inline void sync(void)
131{
132}
133
Haavard Skinnemoen4d7d6932007-12-13 12:56:33 +0100134/*
135 * Given a physical address and a length, return a virtual address
136 * that can be used to access the memory range with the caching
137 * properties specified by "flags".
138 */
Haavard Skinnemoen4d7d6932007-12-13 12:56:33 +0100139#define MAP_NOCACHE (0)
140#define MAP_WRCOMBINE (0)
141#define MAP_WRBACK (0)
142#define MAP_WRTHROUGH (0)
143
144static inline void *
145map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
146{
147 return (void *)paddr;
148}
149
150/*
151 * Take down a mapping set up by map_physmem().
152 */
153static inline void unmap_physmem(void *vaddr, unsigned long flags)
154{
155
156}
157
Kumar Gala65e43a12008-12-13 17:20:27 -0600158static inline phys_addr_t virt_to_phys(void * vaddr)
159{
160 return (phys_addr_t)(vaddr);
161}
162
wdenk507bbe32004-04-18 21:13:41 +0000163#endif /* __MICROBLAZE_IO_H__ */