2 * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
3 * Scott McNutt <smcnutt@psyent.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #ifndef __ASM_NIOS2_IO_H_
25 #define __ASM_NIOS2_IO_H_
27 #define sync() asm volatile ("sync" : : : "memory");
29 extern unsigned char inb (unsigned char *port);
30 extern unsigned short inw (unsigned short *port);
31 extern unsigned inl (unsigned port);
35 asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
37 ({unsigned short val;\
38 asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
41 asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
42 #define writeb(addr,val)\
43 asm volatile ("stbio %0, 0(%1)" : : "r" (addr), "r" (val))
44 #define writew(addr,val)\
45 asm volatile ("sthio %0, 0(%1)" : : "r" (addr), "r" (val))
46 #define writel(addr,val)\
47 asm volatile ("stwio %0, 0(%1)" : : "r" (addr), "r" (val))
49 #define inb(addr) readb(addr)
50 #define inw(addr) readw(addr)
51 #define inl(addr) readl(addr)
52 #define outb(addr,val) writeb(addr,val)
53 #define outw(addr,val) writew(addr,val)
54 #define outl(addr,val) writel(addr,val)
56 static inline void insb (unsigned long port, void *dst, unsigned long count)
58 unsigned char *p = dst;
59 while (count--) *p++ = inb (port);
61 static inline void insw (unsigned long port, void *dst, unsigned long count)
63 unsigned short *p = dst;
64 while (count--) *p++ = inw (port);
66 static inline void insl (unsigned long port, void *dst, unsigned long count)
68 unsigned long *p = dst;
69 while (count--) *p++ = inl (port);
72 static inline void outsb (unsigned long port, const void *src, unsigned long count)
74 const unsigned char *p = src;
75 while (count--) outb (*p++, port);
78 static inline void outsw (unsigned long port, const void *src, unsigned long count)
80 const unsigned short *p = src;
81 while (count--) outw (*p++, port);
83 static inline void outsl (unsigned long port, const void *src, unsigned long count)
85 const unsigned long *p = src;
86 while (count--) outl (*p++, port);
89 #endif /* __ASM_NIOS2_IO_H_ */