aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sh/boards/overdrive/io.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/boards/overdrive/io.c')
-rw-r--r--arch/sh/boards/overdrive/io.c172
1 files changed, 0 insertions, 172 deletions
diff --git a/arch/sh/boards/overdrive/io.c b/arch/sh/boards/overdrive/io.c
deleted file mode 100644
index 4671b6b047b..00000000000
--- a/arch/sh/boards/overdrive/io.c
+++ /dev/null
@@ -1,172 +0,0 @@
1/*
2 * Copyright (C) 2000 David J. Mckay (david.mckay@st.com)
3 *
4 * May be copied or modified under the terms of the GNU General Public
5 * License. See linux/COPYING for more information.
6 *
7 * This file contains the I/O routines for use on the overdrive board
8 *
9 */
10
11#include <linux/types.h>
12#include <linux/delay.h>
13#include <asm/processor.h>
14#include <asm/io.h>
15#include <asm/addrspace.h>
16
17#include <asm/overdrive/overdrive.h>
18
19/*
20 * readX/writeX() are used to access memory mapped devices. On some
21 * architectures the memory mapped IO stuff needs to be accessed
22 * differently. On the SuperH architecture, we just read/write the
23 * memory location directly.
24 */
25
26#define dprintk(x...)
27
28/* Translates an IO address to where it is mapped in memory */
29
30#define io_addr(x) (((unsigned)(x))|PCI_GTIO_BASE)
31
32unsigned char od_inb(unsigned long port)
33{
34dprintk("od_inb(%x)\n", port);
35 return readb(io_addr(port)) & 0xff;
36}
37
38
39unsigned short od_inw(unsigned long port)
40{
41dprintk("od_inw(%x)\n", port);
42 return readw(io_addr(port)) & 0xffff;
43}
44
45unsigned int od_inl(unsigned long port)
46{
47dprintk("od_inl(%x)\n", port);
48 return readl(io_addr(port));
49}
50
51void od_outb(unsigned char value, unsigned long port)
52{
53dprintk("od_outb(%x, %x)\n", value, port);
54 writeb(value, io_addr(port));
55}
56
57void od_outw(unsigned short value, unsigned long port)
58{
59dprintk("od_outw(%x, %x)\n", value, port);
60 writew(value, io_addr(port));
61}
62
63void od_outl(unsigned int value, unsigned long port)
64{
65dprintk("od_outl(%x, %x)\n", value, port);
66 writel(value, io_addr(port));
67}
68
69/* This is horrible at the moment - needs more work to do something sensible */
70#define IO_DELAY() udelay(10)
71
72#define OUT_DELAY(x,type) \
73void od_out##x##_p(unsigned type value,unsigned long port){out##x(value,port);IO_DELAY();}
74
75#define IN_DELAY(x,type) \
76unsigned type od_in##x##_p(unsigned long port) {unsigned type tmp=in##x(port);IO_DELAY();return tmp;}
77
78
79OUT_DELAY(b,char)
80OUT_DELAY(w,short)
81OUT_DELAY(l,int)
82
83IN_DELAY(b,char)
84IN_DELAY(w,short)
85IN_DELAY(l,int)
86
87
88/* Now for the string version of these functions */
89void od_outsb(unsigned long port, const void *addr, unsigned long count)
90{
91 int i;
92 unsigned char *p = (unsigned char *) addr;
93
94 for (i = 0; i < count; i++, p++) {
95 outb(*p, port);
96 }
97}
98
99
100void od_insb(unsigned long port, void *addr, unsigned long count)
101{
102 int i;
103 unsigned char *p = (unsigned char *) addr;
104
105 for (i = 0; i < count; i++, p++) {
106 *p = inb(port);
107 }
108}
109
110/* For the 16 and 32 bit string functions, we have to worry about alignment.
111 * The SH does not do unaligned accesses, so we have to read as bytes and
112 * then write as a word or dword.
113 * This can be optimised a lot more, especially in the case where the data
114 * is aligned
115 */
116
117void od_outsw(unsigned long port, const void *addr, unsigned long count)
118{
119 int i;
120 unsigned short tmp;
121 unsigned char *p = (unsigned char *) addr;
122
123 for (i = 0; i < count; i++, p += 2) {
124 tmp = (*p) | ((*(p + 1)) << 8);
125 outw(tmp, port);
126 }
127}
128
129
130void od_insw(unsigned long port, void *addr, unsigned long count)
131{
132 int i;
133 unsigned short tmp;
134 unsigned char *p = (unsigned char *) addr;
135
136 for (i = 0; i < count; i++, p += 2) {
137 tmp = inw(port);
138 p[0] = tmp & 0xff;
139 p[1] = (tmp >> 8) & 0xff;
140 }
141}
142
143
144void od_outsl(unsigned long port, const void *addr, unsigned long count)
145{
146 int i;
147 unsigned tmp;
148 unsigned char *p = (unsigned char *) addr;
149
150 for (i = 0; i < count; i++, p += 4) {
151 tmp = (*p) | ((*(p + 1)) << 8) | ((*(p + 2)) << 16) |
152 ((*(p + 3)) << 24);
153 outl(tmp, port);
154 }
155}
156
157
158void od_insl(unsigned long port, void *addr, unsigned long count)
159{
160 int i;
161 unsigned tmp;
162 unsigned char *p = (unsigned char *) addr;
163
164 for (i = 0; i < count; i++, p += 4) {
165 tmp = inl(port);
166 p[0] = tmp & 0xff;
167 p[1] = (tmp >> 8) & 0xff;
168 p[2] = (tmp >> 16) & 0xff;
169 p[3] = (tmp >> 24) & 0xff;
170
171 }
172}