blob: 3c0d569233e2693933ea667075a362fe7535e3ec [file] [log] [blame]
Wolfgang Denk7b64fef2006-10-24 14:21:16 +02001/*
2 * Copyright (C) 2006 Atmel Corporation
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22#ifndef __ASM_AVR32_IO_H
23#define __ASM_AVR32_IO_H
24
25#ifdef __KERNEL__
26
27/*
28 * Generic IO read/write. These perform native-endian accesses. Note
29 * that some architectures will want to re-define __raw_{read,write}w.
30 */
31extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
32extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
33extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
34
35extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
36extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
37extern void __raw_readsl(unsigned int addr, void *data, int longlen);
38
39#define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
40#define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
41#define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
42
43#define __raw_readb(a) (*(volatile unsigned char *)(a))
44#define __raw_readw(a) (*(volatile unsigned short *)(a))
45#define __raw_readl(a) (*(volatile unsigned int *)(a))
46
47/* As long as I/O is only performed in P4 (or possibly P3), we're safe */
48#define writeb(v,a) __raw_writeb(v,a)
49#define writew(v,a) __raw_writew(v,a)
50#define writel(v,a) __raw_writel(v,a)
51
52#define readb(a) __raw_readb(a)
53#define readw(a) __raw_readw(a)
54#define readl(a) __raw_readl(a)
55
56/*
57 * Bad read/write accesses...
58 */
59extern void __readwrite_bug(const char *fn);
60
61#define IO_SPACE_LIMIT 0xffffffff
62
63/*
64 * All I/O is memory mapped, so these macros doesn't make very much sense
65 */
66#define outb(v,p) __raw_writeb(v, p)
67#define outw(v,p) __raw_writew(cpu_to_le16(v),p)
68#define outl(v,p) __raw_writel(cpu_to_le32(v),p)
69
70#define inb(p) ({ unsigned int __v = __raw_readb(p); __v; })
71#define inw(p) ({ unsigned int __v = __le16_to_cpu(__raw_readw(p)); __v; })
72#define inl(p) ({ unsigned int __v = __le32_to_cpu(__raw_readl(p)); __v; })
73
74#include <asm/addrspace.h>
75
76/* virt_to_phys will only work when address is in P1 or P2 */
77static __inline__ unsigned long virt_to_phys(volatile void *address)
78{
79 return PHYSADDR(address);
80}
81
82static __inline__ void * phys_to_virt(unsigned long address)
83{
84 return (void *)P1SEGADDR(address);
85}
86
87#define cached(addr) ((void *)P1SEGADDR(addr))
88#define uncached(addr) ((void *)P2SEGADDR(addr))
89
90#endif /* __KERNEL__ */
91
Haiying Wang3a197b22007-02-21 16:52:31 +010092static inline void sync(void)
93{
94}
95
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020096#endif /* __ASM_AVR32_IO_H */