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authorPaul Mundt <lethal@linux-sh.org>2008-07-29 08:01:19 -0400
committerPaul Mundt <lethal@linux-sh.org>2008-07-29 08:01:19 -0400
commitda2014a2b080e7f3024a4eb6917d47069ad9620b (patch)
treecfde12c6d4b5baa222966b14a676f107992cf786 /arch/sh/boards/mach-se/770x/io.c
parent71b8064e7df5698520d73b4c1566a3dbc98eb9ef (diff)
sh: Shuffle the board directories in to mach groups.
This flattens out the board directories in to individual mach groups, we will use this for getting rid of unneeded directories, simplifying the build system, and becoming more coherent with the refactored arch/sh/include topology. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards/mach-se/770x/io.c')
-rw-r--r--arch/sh/boards/mach-se/770x/io.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-se/770x/io.c b/arch/sh/boards/mach-se/770x/io.c
new file mode 100644
index 000000000000..b1ec085b8673
--- /dev/null
+++ b/arch/sh/boards/mach-se/770x/io.c
@@ -0,0 +1,156 @@
1/*
2 * Copyright (C) 2000 Kazumoto Kojima
3 *
4 * I/O routine for Hitachi SolutionEngine.
5 */
6#include <linux/kernel.h>
7#include <linux/types.h>
8#include <asm/io.h>
9#include <asm/se.h>
10
11/* MS7750 requires special versions of in*, out* routines, since
12 PC-like io ports are located at upper half byte of 16-bit word which
13 can be accessed only with 16-bit wide. */
14
15static inline volatile __u16 *
16port2adr(unsigned int port)
17{
18 if (port & 0xff000000)
19 return ( volatile __u16 *) port;
20 if (port >= 0x2000)
21 return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
22 else if (port >= 0x1000)
23 return (volatile __u16 *) (PA_83902 + (port << 1));
24 else
25 return (volatile __u16 *) (PA_SUPERIO + (port << 1));
26}
27
28static inline int
29shifted_port(unsigned long port)
30{
31 /* For IDE registers, value is not shifted */
32 if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)
33 return 0;
34 else
35 return 1;
36}
37
38unsigned char se_inb(unsigned long port)
39{
40 if (shifted_port(port))
41 return (*port2adr(port) >> 8);
42 else
43 return (*port2adr(port))&0xff;
44}
45
46unsigned char se_inb_p(unsigned long port)
47{
48 unsigned long v;
49
50 if (shifted_port(port))
51 v = (*port2adr(port) >> 8);
52 else
53 v = (*port2adr(port))&0xff;
54 ctrl_delay();
55 return v;
56}
57
58unsigned short se_inw(unsigned long port)
59{
60 if (port >= 0x2000)
61 return *port2adr(port);
62 else
63 maybebadio(port);
64 return 0;
65}
66
67unsigned int se_inl(unsigned long port)
68{
69 maybebadio(port);
70 return 0;
71}
72
73void se_outb(unsigned char value, unsigned long port)
74{
75 if (shifted_port(port))
76 *(port2adr(port)) = value << 8;
77 else
78 *(port2adr(port)) = value;
79}
80
81void se_outb_p(unsigned char value, unsigned long port)
82{
83 if (shifted_port(port))
84 *(port2adr(port)) = value << 8;
85 else
86 *(port2adr(port)) = value;
87 ctrl_delay();
88}
89
90void se_outw(unsigned short value, unsigned long port)
91{
92 if (port >= 0x2000)
93 *port2adr(port) = value;
94 else
95 maybebadio(port);
96}
97
98void se_outl(unsigned int value, unsigned long port)
99{
100 maybebadio(port);
101}
102
103void se_insb(unsigned long port, void *addr, unsigned long count)
104{
105 volatile __u16 *p = port2adr(port);
106 __u8 *ap = addr;
107
108 if (shifted_port(port)) {
109 while (count--)
110 *ap++ = *p >> 8;
111 } else {
112 while (count--)
113 *ap++ = *p;
114 }
115}
116
117void se_insw(unsigned long port, void *addr, unsigned long count)
118{
119 volatile __u16 *p = port2adr(port);
120 __u16 *ap = addr;
121 while (count--)
122 *ap++ = *p;
123}
124
125void se_insl(unsigned long port, void *addr, unsigned long count)
126{
127 maybebadio(port);
128}
129
130void se_outsb(unsigned long port, const void *addr, unsigned long count)
131{
132 volatile __u16 *p = port2adr(port);
133 const __u8 *ap = addr;
134
135 if (shifted_port(port)) {
136 while (count--)
137 *p = *ap++ << 8;
138 } else {
139 while (count--)
140 *p = *ap++;
141 }
142}
143
144void se_outsw(unsigned long port, const void *addr, unsigned long count)
145{
146 volatile __u16 *p = port2adr(port);
147 const __u16 *ap = addr;
148
149 while (count--)
150 *p = *ap++;
151}
152
153void se_outsl(unsigned long port, const void *addr, unsigned long count)
154{
155 maybebadio(port);
156}