Commit | Line | Data |
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9c57548f PM |
1 | /* |
2 | * arch/sh/kernel/io_generic.c | |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 2000 Niibe Yutaka | |
9c57548f | 5 | * Copyright (C) 2005 - 2007 Paul Mundt |
1da177e4 LT |
6 | * |
7 | * Generic I/O routine. These can be used where a machine specific version | |
8 | * is not required. | |
9 | * | |
10 | * This file is subject to the terms and conditions of the GNU General Public | |
11 | * License. See the file "COPYING" in the main directory of this archive | |
12 | * for more details. | |
1da177e4 | 13 | */ |
b66c1a39 | 14 | #include <linux/module.h> |
9c57548f | 15 | #include <linux/io.h> |
1da177e4 | 16 | #include <asm/machvec.h> |
1da177e4 | 17 | |
b66c1a39 PM |
18 | #ifdef CONFIG_CPU_SH3 |
19 | /* SH3 has a PCMCIA bug that needs a dummy read from area 6 for a | |
20 | * workaround. */ | |
1da177e4 | 21 | /* I'm not sure SH7709 has this kind of bug */ |
14866543 | 22 | #define dummy_read() __raw_readb(0xba000000) |
b66c1a39 PM |
23 | #else |
24 | #define dummy_read() | |
1da177e4 LT |
25 | #endif |
26 | ||
1da177e4 LT |
27 | unsigned long generic_io_base; |
28 | ||
b66c1a39 | 29 | u8 generic_inb(unsigned long port) |
1da177e4 | 30 | { |
14866543 | 31 | return __raw_readb(__ioport_map(port, 1)); |
1da177e4 LT |
32 | } |
33 | ||
b66c1a39 | 34 | u16 generic_inw(unsigned long port) |
1da177e4 | 35 | { |
14866543 | 36 | return __raw_readw(__ioport_map(port, 2)); |
1da177e4 LT |
37 | } |
38 | ||
b66c1a39 | 39 | u32 generic_inl(unsigned long port) |
1da177e4 | 40 | { |
14866543 | 41 | return __raw_readl(__ioport_map(port, 4)); |
1da177e4 LT |
42 | } |
43 | ||
b66c1a39 | 44 | u8 generic_inb_p(unsigned long port) |
1da177e4 | 45 | { |
b66c1a39 | 46 | unsigned long v = generic_inb(port); |
1da177e4 | 47 | |
14866543 | 48 | ctrl_delay(); |
1da177e4 LT |
49 | return v; |
50 | } | |
51 | ||
b66c1a39 | 52 | u16 generic_inw_p(unsigned long port) |
1da177e4 | 53 | { |
b66c1a39 | 54 | unsigned long v = generic_inw(port); |
1da177e4 | 55 | |
14866543 | 56 | ctrl_delay(); |
1da177e4 LT |
57 | return v; |
58 | } | |
59 | ||
b66c1a39 | 60 | u32 generic_inl_p(unsigned long port) |
1da177e4 | 61 | { |
b66c1a39 | 62 | unsigned long v = generic_inl(port); |
1da177e4 | 63 | |
14866543 | 64 | ctrl_delay(); |
1da177e4 LT |
65 | return v; |
66 | } | |
67 | ||
68 | /* | |
69 | * insb/w/l all read a series of bytes/words/longs from a fixed port | |
70 | * address. However as the port address doesn't change we only need to | |
71 | * convert the port address to real address once. | |
72 | */ | |
73 | ||
b66c1a39 | 74 | void generic_insb(unsigned long port, void *dst, unsigned long count) |
1da177e4 | 75 | { |
b66c1a39 PM |
76 | volatile u8 *port_addr; |
77 | u8 *buf = dst; | |
1da177e4 | 78 | |
fa43972f | 79 | port_addr = (volatile u8 __force *)__ioport_map(port, 1); |
b66c1a39 PM |
80 | while (count--) |
81 | *buf++ = *port_addr; | |
1da177e4 LT |
82 | } |
83 | ||
b66c1a39 | 84 | void generic_insw(unsigned long port, void *dst, unsigned long count) |
1da177e4 | 85 | { |
b66c1a39 PM |
86 | volatile u16 *port_addr; |
87 | u16 *buf = dst; | |
1da177e4 | 88 | |
fa43972f | 89 | port_addr = (volatile u16 __force *)__ioport_map(port, 2); |
b66c1a39 PM |
90 | while (count--) |
91 | *buf++ = *port_addr; | |
1da177e4 | 92 | |
b66c1a39 | 93 | dummy_read(); |
1da177e4 LT |
94 | } |
95 | ||
b66c1a39 | 96 | void generic_insl(unsigned long port, void *dst, unsigned long count) |
1da177e4 | 97 | { |
b66c1a39 PM |
98 | volatile u32 *port_addr; |
99 | u32 *buf = dst; | |
1da177e4 | 100 | |
fa43972f | 101 | port_addr = (volatile u32 __force *)__ioport_map(port, 4); |
b66c1a39 PM |
102 | while (count--) |
103 | *buf++ = *port_addr; | |
1da177e4 | 104 | |
b66c1a39 | 105 | dummy_read(); |
1da177e4 LT |
106 | } |
107 | ||
b66c1a39 | 108 | void generic_outb(u8 b, unsigned long port) |
1da177e4 | 109 | { |
14866543 | 110 | __raw_writeb(b, __ioport_map(port, 1)); |
1da177e4 LT |
111 | } |
112 | ||
b66c1a39 | 113 | void generic_outw(u16 b, unsigned long port) |
1da177e4 | 114 | { |
14866543 | 115 | __raw_writew(b, __ioport_map(port, 2)); |
1da177e4 LT |
116 | } |
117 | ||
b66c1a39 | 118 | void generic_outl(u32 b, unsigned long port) |
1da177e4 | 119 | { |
14866543 | 120 | __raw_writel(b, __ioport_map(port, 4)); |
1da177e4 LT |
121 | } |
122 | ||
b66c1a39 | 123 | void generic_outb_p(u8 b, unsigned long port) |
1da177e4 | 124 | { |
b66c1a39 | 125 | generic_outb(b, port); |
14866543 | 126 | ctrl_delay(); |
1da177e4 LT |
127 | } |
128 | ||
b66c1a39 | 129 | void generic_outw_p(u16 b, unsigned long port) |
1da177e4 | 130 | { |
b66c1a39 | 131 | generic_outw(b, port); |
14866543 | 132 | ctrl_delay(); |
1da177e4 LT |
133 | } |
134 | ||
b66c1a39 | 135 | void generic_outl_p(u32 b, unsigned long port) |
1da177e4 | 136 | { |
b66c1a39 | 137 | generic_outl(b, port); |
14866543 | 138 | ctrl_delay(); |
1da177e4 LT |
139 | } |
140 | ||
141 | /* | |
142 | * outsb/w/l all write a series of bytes/words/longs to a fixed port | |
143 | * address. However as the port address doesn't change we only need to | |
144 | * convert the port address to real address once. | |
145 | */ | |
b66c1a39 | 146 | void generic_outsb(unsigned long port, const void *src, unsigned long count) |
1da177e4 | 147 | { |
b66c1a39 PM |
148 | volatile u8 *port_addr; |
149 | const u8 *buf = src; | |
1da177e4 | 150 | |
e7cc9a73 | 151 | port_addr = (volatile u8 __force *)__ioport_map(port, 1); |
1da177e4 | 152 | |
b66c1a39 PM |
153 | while (count--) |
154 | *port_addr = *buf++; | |
1da177e4 LT |
155 | } |
156 | ||
b66c1a39 | 157 | void generic_outsw(unsigned long port, const void *src, unsigned long count) |
1da177e4 | 158 | { |
b66c1a39 PM |
159 | volatile u16 *port_addr; |
160 | const u16 *buf = src; | |
1da177e4 | 161 | |
e7cc9a73 | 162 | port_addr = (volatile u16 __force *)__ioport_map(port, 2); |
1da177e4 | 163 | |
b66c1a39 PM |
164 | while (count--) |
165 | *port_addr = *buf++; | |
1da177e4 | 166 | |
b66c1a39 | 167 | dummy_read(); |
1da177e4 LT |
168 | } |
169 | ||
b66c1a39 | 170 | void generic_outsl(unsigned long port, const void *src, unsigned long count) |
1da177e4 | 171 | { |
b66c1a39 PM |
172 | volatile u32 *port_addr; |
173 | const u32 *buf = src; | |
1da177e4 | 174 | |
e7cc9a73 | 175 | port_addr = (volatile u32 __force *)__ioport_map(port, 4); |
b66c1a39 PM |
176 | while (count--) |
177 | *port_addr = *buf++; | |
1da177e4 | 178 | |
b66c1a39 | 179 | dummy_read(); |
1da177e4 LT |
180 | } |
181 | ||
b66c1a39 | 182 | void __iomem *generic_ioport_map(unsigned long addr, unsigned int size) |
1da177e4 | 183 | { |
b66c1a39 | 184 | return (void __iomem *)(addr + generic_io_base); |
1da177e4 | 185 | } |
1da177e4 | 186 | |
b66c1a39 | 187 | void generic_ioport_unmap(void __iomem *addr) |
1da177e4 | 188 | { |
1da177e4 | 189 | } |