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c7de829c WD |
1 | /* |
2 | * Memory mapped IO | |
3 | * | |
4 | * (C) Copyright 2002 | |
8bde7f77 | 5 | * Hyperion Entertainment, ThomasF@hyperion-entertainment.com |
c7de829c WD |
6 | * |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * You may also use this under a BSD license. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8bde7f77 | 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
c7de829c | 19 | * |
8bde7f77 | 20 | */ |
c7de829c WD |
21 | |
22 | #ifndef _MEMIO_H | |
23 | #define _MEMIO_H | |
24 | ||
25 | #include "short_types.h" | |
26 | ||
27 | #define IOBASE 0xFE000000 | |
28 | ||
29 | #define in_byte(from) read_byte( (uint8 *)(IOBASE | (from))) | |
30 | #define in_word(from) read_word_little((uint16 *)(IOBASE | (from))) | |
31 | #define in_long(from) read_long_little((uint32 *)(IOBASE | (from))) | |
32 | #define out_byte(to, val) write_byte((uint8 *)(IOBASE | (to)), val) | |
33 | #define out_word(to, val) write_word_little((uint16 *)(IOBASE | (to)), val) | |
34 | #define out_long(to, val) write_long_little((uint32 *)(IOBASE | (to)), val) | |
35 | ||
36 | ||
37 | static inline uint8 read_byte(volatile uint8 *from) | |
38 | { | |
39 | int x; | |
40 | asm volatile ("lbz %0,%1\n eieio\n sync" : "=r" (x) : "m" (*from)); | |
41 | return (uint8)x; | |
42 | } | |
43 | ||
44 | ||
45 | static inline void write_byte(volatile uint8 *to, uint8 x) | |
46 | { | |
47 | asm volatile ("stb %1,%0\n eieio\n sync" : "=m" (*to) : "r" (x)); | |
48 | } | |
49 | ||
50 | static inline uint16 read_word_little(volatile uint16 *from) | |
51 | { | |
52 | int x; | |
53 | asm volatile ("lhbrx %0,0,%1\n eieio\n sync" : "=r" (x) : "r" (from), "m" (*from)); | |
54 | return (uint16)x; | |
55 | } | |
56 | ||
57 | static inline uint16 read_word_big(volatile uint16 *from) | |
58 | { | |
59 | int x; | |
60 | asm volatile ("lhz %0,%1\n eieio\n sync" : "=r" (x) : "m" (*from)); | |
61 | return (uint16)x; | |
62 | } | |
63 | ||
64 | static inline void write_word_little(volatile uint16 *to, int x) | |
65 | { | |
66 | asm volatile ("sthbrx %1,0,%2\n eieio\n sync" : "=m" (*to) : "r" (x), "r" (to)); | |
67 | } | |
68 | ||
69 | static inline void write_word_big(volatile uint16 *to, int x) | |
70 | { | |
71 | asm volatile ("sth %1,%0\n eieio\n sync" : "=m" (*to) : "r" (x)); | |
72 | } | |
73 | ||
74 | static inline uint32 read_long_little(volatile uint32 *from) | |
75 | { | |
76 | unsigned long x; | |
77 | asm volatile ("lwbrx %0,0,%1\n eieio\n sync" : "=r" (x) : "r" (from), "m"(*from)); | |
78 | return (uint32)x; | |
79 | } | |
80 | ||
81 | static inline uint32 read_long_big(volatile uint32 *from) | |
82 | { | |
83 | unsigned long x; | |
84 | asm volatile ("lwz %0,%1\n eieio\n sync" : "=r" (x) : "m" (*from)); | |
85 | return (uint32)x; | |
86 | } | |
87 | ||
88 | static inline void write_long_little(volatile uint32 *to, uint32 x) | |
89 | { | |
90 | asm volatile ("stwbrx %1,0,%2\n eieio\n sync" : "=m" (*to) : "r" (x), "r" (to)); | |
91 | } | |
92 | ||
93 | static inline void write_long_big(volatile uint32 *to, uint32 x) | |
94 | { | |
95 | asm volatile ("stw %1,%0\n eieio\n sync" : "=m" (*to) : "r" (x)); | |
96 | } | |
97 | ||
98 | #define CONFIG_ADDR(bus, devfn, offset) \ | |
99 | write_long_big((uint32 *)0xFEC00CF8, \ | |
8bde7f77 WD |
100 | ((offset & 0xFC)<<24) | (devfn << 16) \ |
101 | | (bus<<8) | 0x80); | |
c7de829c WD |
102 | #define CONFIG_DATA(offset,mask) ((void *)(0xFEE00CFC+(offset & mask))) |
103 | ||
104 | ||
105 | uint8 pci_read_cfg_byte(int32 bus, int32 devfn, int32 offset); | |
106 | void pci_write_cfg_byte(int32 bus, int32 devfn, int32 offset, uint8 x); | |
107 | uint16 pci_read_cfg_word(int32 bus, int32 devfn, int32 offset); | |
108 | void pci_write_cfg_word(int32 bus, int32 devfn, int32 offset, uint16 x); | |
109 | uint32 pci_read_cfg_long(int32 bus, int32 devfn, int32 offset); | |
110 | void pci_write_cfg_long(int32 bus, int32 devfn, int32 offset, uint32 x); | |
111 | ||
112 | ||
113 | #endif |