1 /*
2 * arch/arm/mach-at91/include/mach/io.h
3 *
4 * Copyright (C) 2003 SAN People
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 as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #ifndef __ASM_ARCH_IO_H
22 #define __ASM_ARCH_IO_H
23
24 #include <mach/hardware.h>
25
26 #define IO_SPACE_LIMIT 0xFFFFFFFF
27
28 #define __io(a) __typesafe_io(a)
29 #define __mem_pci(a) (a)
30
31 #ifndef __ASSEMBLY__
32
at91_sys_read(unsigned int reg_offset)33 static inline unsigned int at91_sys_read(unsigned int reg_offset)
34 {
35 void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
36
37 return __raw_readl(addr + reg_offset);
38 }
39
at91_sys_write(unsigned int reg_offset,unsigned long value)40 static inline void at91_sys_write(unsigned int reg_offset, unsigned long value)
41 {
42 void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
43
44 __raw_writel(value, addr + reg_offset);
45 }
46
47 #endif
48
49 #endif
50