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 static inline void sync(void)
29 __asm__ __volatile__ ("sync" : : : "memory");
33 * Given a physical address and a length, return a virtual address
34 * that can be used to access the memory range with the caching
35 * properties specified by "flags".
37 typedef unsigned long phys_addr_t;
39 #define MAP_NOCACHE (0)
40 #define MAP_WRCOMBINE (0)
41 #define MAP_WRBACK (0)
42 #define MAP_WRTHROUGH (0)
45 map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
51 * Take down a mapping set up by map_physmem().
53 static inline void unmap_physmem(void *vaddr, unsigned long flags)
58 extern unsigned char inb (unsigned char *port);
59 extern unsigned short inw (unsigned short *port);
60 extern unsigned inl (unsigned port);
62 #define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
63 #define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
64 #define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
66 #define __raw_readb(a) (*(volatile unsigned char *)(a))
67 #define __raw_readw(a) (*(volatile unsigned short *)(a))
68 #define __raw_readl(a) (*(volatile unsigned int *)(a))
72 asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
74 ({unsigned short val;\
75 asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
78 asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
80 #define writeb(addr,val)\
81 asm volatile ("stbio %1, 0(%0)" : : "r" (addr), "r" (val))
82 #define writew(addr,val)\
83 asm volatile ("sthio %1, 0(%0)" : : "r" (addr), "r" (val))
84 #define writel(addr,val)\
85 asm volatile ("stwio %1, 0(%0)" : : "r" (addr), "r" (val))
87 #define inb(addr) readb(addr)
88 #define inw(addr) readw(addr)
89 #define inl(addr) readl(addr)
90 #define outb(addr,val) writeb(addr,val)
91 #define outw(addr,val) writew(addr,val)
92 #define outl(addr,val) writel(addr,val)
94 static inline void insb (unsigned long port, void *dst, unsigned long count)
96 unsigned char *p = dst;
97 while (count--) *p++ = inb (port);
99 static inline void insw (unsigned long port, void *dst, unsigned long count)
101 unsigned short *p = dst;
102 while (count--) *p++ = inw (port);
104 static inline void insl (unsigned long port, void *dst, unsigned long count)
106 unsigned long *p = dst;
107 while (count--) *p++ = inl (port);
110 static inline void outsb (unsigned long port, const void *src, unsigned long count)
112 const unsigned char *p = src;
113 while (count--) outb (*p++, port);
116 static inline void outsw (unsigned long port, const void *src, unsigned long count)
118 const unsigned short *p = src;
119 while (count--) outw (*p++, port);
121 static inline void outsl (unsigned long port, const void *src, unsigned long count)
123 const unsigned long *p = src;
124 while (count--) outl (*p++, port);
127 #endif /* __ASM_NIOS2_IO_H_ */