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5c952cf0 WD |
1 | /* |
2 | * (C) Copyright 2004, Psyent Corporation <www.psyent.com> | |
3 | * Scott McNutt <smcnutt@psyent.com> | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
5c952cf0 WD |
6 | */ |
7 | ||
8 | #ifndef __ASM_NIOS2_IO_H_ | |
9 | #define __ASM_NIOS2_IO_H_ | |
10 | ||
3a197b2f HW |
11 | static inline void sync(void) |
12 | { | |
13 | __asm__ __volatile__ ("sync" : : : "memory"); | |
14 | } | |
5c952cf0 | 15 | |
4d7d6936 HS |
16 | /* |
17 | * Given a physical address and a length, return a virtual address | |
18 | * that can be used to access the memory range with the caching | |
19 | * properties specified by "flags". | |
20 | */ | |
4d7d6936 HS |
21 | #define MAP_NOCACHE (0) |
22 | #define MAP_WRCOMBINE (0) | |
23 | #define MAP_WRBACK (0) | |
24 | #define MAP_WRTHROUGH (0) | |
25 | ||
26 | static inline void * | |
27 | map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) | |
28 | { | |
29 | return (void *)paddr; | |
30 | } | |
31 | ||
32 | /* | |
33 | * Take down a mapping set up by map_physmem(). | |
34 | */ | |
35 | static inline void unmap_physmem(void *vaddr, unsigned long flags) | |
36 | { | |
37 | ||
38 | } | |
39 | ||
65e43a10 KG |
40 | static inline phys_addr_t virt_to_phys(void * vaddr) |
41 | { | |
42 | return (phys_addr_t)(vaddr); | |
43 | } | |
44 | ||
5c952cf0 WD |
45 | extern unsigned char inb (unsigned char *port); |
46 | extern unsigned short inw (unsigned short *port); | |
47 | extern unsigned inl (unsigned port); | |
0c1c117c | 48 | |
812711ce HS |
49 | #define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v)) |
50 | #define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v)) | |
51 | #define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v)) | |
52 | ||
53 | #define __raw_readb(a) (*(volatile unsigned char *)(a)) | |
54 | #define __raw_readw(a) (*(volatile unsigned short *)(a)) | |
55 | #define __raw_readl(a) (*(volatile unsigned int *)(a)) | |
56 | ||
0c1c117c WD |
57 | #define readb(addr)\ |
58 | ({unsigned char val;\ | |
59 | asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) | |
60 | #define readw(addr)\ | |
61 | ({unsigned short val;\ | |
62 | asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) | |
63 | #define readl(addr)\ | |
64 | ({unsigned long val;\ | |
65 | asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) | |
c2ced000 | 66 | |
3ea0037f SM |
67 | #define writeb(val,addr)\ |
68 | asm volatile ("stbio %0, 0(%1)" : : "r" (val), "r" (addr)) | |
69 | #define writew(val,addr)\ | |
70 | asm volatile ("sthio %0, 0(%1)" : : "r" (val), "r" (addr)) | |
71 | #define writel(val,addr)\ | |
72 | asm volatile ("stwio %0, 0(%1)" : : "r" (val), "r" (addr)) | |
0c1c117c WD |
73 | |
74 | #define inb(addr) readb(addr) | |
75 | #define inw(addr) readw(addr) | |
76 | #define inl(addr) readl(addr) | |
3ea0037f SM |
77 | #define outb(val, addr) writeb(val,addr) |
78 | #define outw(val, addr) writew(val,addr) | |
79 | #define outl(val, addr) writel(val,addr) | |
0c1c117c WD |
80 | |
81 | static inline void insb (unsigned long port, void *dst, unsigned long count) | |
82 | { | |
83 | unsigned char *p = dst; | |
84 | while (count--) *p++ = inb (port); | |
85 | } | |
86 | static inline void insw (unsigned long port, void *dst, unsigned long count) | |
87 | { | |
88 | unsigned short *p = dst; | |
89 | while (count--) *p++ = inw (port); | |
90 | } | |
91 | static inline void insl (unsigned long port, void *dst, unsigned long count) | |
92 | { | |
93 | unsigned long *p = dst; | |
94 | while (count--) *p++ = inl (port); | |
95 | } | |
96 | ||
97 | static inline void outsb (unsigned long port, const void *src, unsigned long count) | |
98 | { | |
99 | const unsigned char *p = src; | |
100 | while (count--) outb (*p++, port); | |
101 | } | |
102 | ||
103 | static inline void outsw (unsigned long port, const void *src, unsigned long count) | |
104 | { | |
105 | const unsigned short *p = src; | |
106 | while (count--) outw (*p++, port); | |
107 | } | |
108 | static inline void outsl (unsigned long port, const void *src, unsigned long count) | |
109 | { | |
110 | const unsigned long *p = src; | |
111 | while (count--) outl (*p++, port); | |
112 | } | |
5c952cf0 WD |
113 | |
114 | #endif /* __ASM_NIOS2_IO_H_ */ |