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5c952cf0 WD |
1 | /* |
2 | * (C) Copyright 2004, Psyent Corporation <www.psyent.com> | |
3 | * Scott McNutt <smcnutt@psyent.com> | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #ifndef __ASM_NIOS2_IO_H_ | |
25 | #define __ASM_NIOS2_IO_H_ | |
26 | ||
3a197b2f HW |
27 | static inline void sync(void) |
28 | { | |
29 | __asm__ __volatile__ ("sync" : : : "memory"); | |
30 | } | |
5c952cf0 | 31 | |
4d7d6936 HS |
32 | /* |
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". | |
36 | */ | |
37 | typedef unsigned long phys_addr_t; | |
38 | ||
39 | #define MAP_NOCACHE (0) | |
40 | #define MAP_WRCOMBINE (0) | |
41 | #define MAP_WRBACK (0) | |
42 | #define MAP_WRTHROUGH (0) | |
43 | ||
44 | static inline void * | |
45 | map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) | |
46 | { | |
47 | return (void *)paddr; | |
48 | } | |
49 | ||
50 | /* | |
51 | * Take down a mapping set up by map_physmem(). | |
52 | */ | |
53 | static inline void unmap_physmem(void *vaddr, unsigned long flags) | |
54 | { | |
55 | ||
56 | } | |
57 | ||
5c952cf0 WD |
58 | extern unsigned char inb (unsigned char *port); |
59 | extern unsigned short inw (unsigned short *port); | |
60 | extern unsigned inl (unsigned port); | |
0c1c117c | 61 | |
812711ce HS |
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)) | |
65 | ||
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)) | |
69 | ||
0c1c117c WD |
70 | #define readb(addr)\ |
71 | ({unsigned char val;\ | |
72 | asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) | |
73 | #define readw(addr)\ | |
74 | ({unsigned short val;\ | |
75 | asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) | |
76 | #define readl(addr)\ | |
77 | ({unsigned long val;\ | |
78 | asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) | |
c2ced000 | 79 | |
0c1c117c | 80 | #define writeb(addr,val)\ |
c2ced000 | 81 | asm volatile ("stbio %1, 0(%0)" : : "r" (addr), "r" (val)) |
0c1c117c | 82 | #define writew(addr,val)\ |
c2ced000 | 83 | asm volatile ("sthio %1, 0(%0)" : : "r" (addr), "r" (val)) |
0c1c117c | 84 | #define writel(addr,val)\ |
c2ced000 | 85 | asm volatile ("stwio %1, 0(%0)" : : "r" (addr), "r" (val)) |
0c1c117c WD |
86 | |
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) | |
93 | ||
94 | static inline void insb (unsigned long port, void *dst, unsigned long count) | |
95 | { | |
96 | unsigned char *p = dst; | |
97 | while (count--) *p++ = inb (port); | |
98 | } | |
99 | static inline void insw (unsigned long port, void *dst, unsigned long count) | |
100 | { | |
101 | unsigned short *p = dst; | |
102 | while (count--) *p++ = inw (port); | |
103 | } | |
104 | static inline void insl (unsigned long port, void *dst, unsigned long count) | |
105 | { | |
106 | unsigned long *p = dst; | |
107 | while (count--) *p++ = inl (port); | |
108 | } | |
109 | ||
110 | static inline void outsb (unsigned long port, const void *src, unsigned long count) | |
111 | { | |
112 | const unsigned char *p = src; | |
113 | while (count--) outb (*p++, port); | |
114 | } | |
115 | ||
116 | static inline void outsw (unsigned long port, const void *src, unsigned long count) | |
117 | { | |
118 | const unsigned short *p = src; | |
119 | while (count--) outw (*p++, port); | |
120 | } | |
121 | static inline void outsl (unsigned long port, const void *src, unsigned long count) | |
122 | { | |
123 | const unsigned long *p = src; | |
124 | while (count--) outl (*p++, port); | |
125 | } | |
5c952cf0 WD |
126 | |
127 | #endif /* __ASM_NIOS2_IO_H_ */ |