1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
/*
* PeeCeeI.c: The emerging standard...
*
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
*/
#include <linux/module.h>
#include <asm/io.h>
#include <asm/byteorder.h>
void outsb(unsigned long __addr, const void *src, unsigned long count)
{
void __iomem *addr = (void __iomem *) __addr;
const u8 *p = src;
while (count--)
outb(*p++, addr);
}
EXPORT_SYMBOL(outsb);
void outsw(unsigned long __addr, const void *src, unsigned long count)
{
void __iomem *addr = (void __iomem *) __addr;
while (count--) {
__raw_writew(*(u16 *)src, addr);
src += sizeof(u16);
}
}
EXPORT_SYMBOL(outsw);
void outsl(unsigned long __addr, const void *src, unsigned long count)
{
void __iomem *addr = (void __iomem *) __addr;
u32 l, l2;
if (!count)
return;
switch (((unsigned long)src) & 0x3) {
case 0x0:
/* src is naturally aligned */
while (count--) {
__raw_writel(*(u32 *)src, addr);
src += sizeof(u32);
}
break;
case 0x2:
/* 2-byte alignment */
while (count--) {
l = (*(u16 *)src) << 16;
l |= *(u16 *)(src + sizeof(u16));
__raw_writel(l, addr);
src += sizeof(u32);
}
break;
case 0x1:
/* Hold three bytes in l each time, grab a byte from l2 */
l = (*(u8 *)src) << 24;
l |= (*(u16 *)(src + sizeof(u8))) << 8;
src += sizeof(u8) + sizeof(u16);
while (count--) {
l2 = *(u32 *)src;
l |= (l2 >> 24);
__raw_writel(l, addr);
l = l2 << 8;
src += sizeof(u32);
}
break;
case 0x3:
/* Hold a byte in l each time, grab 3 bytes from l2 */
l = (*(u8 *)src) << 24;
src += sizeof(u8);
while (count--) {
l2 = *(u32 *)src;
l |= (l2 >> 8);
__raw_writel(l, addr);
l = l2 << 24;
src += sizeof(u32);
}
break;
}
}
EXPORT_SYMBOL(outsl);
void insb(unsigned long __addr, void *dst, unsigned long count)
{
void __iomem *addr = (void __iomem *) __addr;
if (count) {
u32 *pi;
u8 *pb = dst;
while ((((unsigned long)pb) & 0x3) && count--)
*pb++ = inb(addr);
pi = (u32 *)pb;
while (count >= 4) {
u32 w;
w = (inb(addr) << 24);
w |= (inb(addr) << 16);
w |= (inb(addr) << 8);
w |= (inb(addr) << 0);
*pi++ = w;
count -= 4;
}
pb = (u8 *)pi;
while (count--)
*pb++ = inb(addr);
}
}
EXPORT_SYMBOL(insb);
void insw(unsigned long __addr, void *dst, unsigned long count)
{
void __iomem *addr = (void __iomem *) __addr;
if (count) {
u16 *ps = dst;
u32 *pi;
if (((unsigned long)ps) & 0x2) {
*ps++ = le16_to_cpu(inw(addr));
count--;
}
pi = (u32 *)ps;
while (count >= 2) {
u32 w;
w = (le16_to_cpu(inw(addr)) << 16);
w |= (le16_to_cpu(inw(addr)) << 0);
*pi++ = w;
count -= 2;
}
ps = (u16 *)pi;
if (count)
*ps = le16_to_cpu(inw(addr));
}
}
EXPORT_SYMBOL(insw);
void insl(unsigned long __addr, void *dst, unsigned long count)
{
void __iomem *addr = (void __iomem *) __addr;
if (count) {
if ((((unsigned long)dst) & 0x3) == 0) {
u32 *pi = dst;
while (count--)
*pi++ = le32_to_cpu(inl(addr));
} else {
u32 l = 0, l2, *pi;
u16 *ps;
u8 *pb;
switch (((unsigned long)dst) & 3) {
case 0x2:
ps = dst;
count -= 1;
l = le32_to_cpu(inl(addr));
*ps++ = l;
pi = (u32 *)ps;
while (count--) {
l2 = le32_to_cpu(inl(addr));
*pi++ = (l << 16) | (l2 >> 16);
l = l2;
}
ps = (u16 *)pi;
*ps = l;
break;
case 0x1:
pb = dst;
count -= 1;
l = le32_to_cpu(inl(addr));
*pb++ = l >> 24;
ps = (u16 *)pb;
*ps++ = ((l >> 8) & 0xffff);
pi = (u32 *)ps;
while (count--) {
l2 = le32_to_cpu(inl(addr));
*pi++ = (l << 24) | (l2 >> 8);
l = l2;
}
pb = (u8 *)pi;
*pb = l;
break;
case 0x3:
pb = (u8 *)dst;
count -= 1;
l = le32_to_cpu(inl(addr));
*pb++ = l >> 24;
pi = (u32 *)pb;
while (count--) {
l2 = le32_to_cpu(inl(addr));
*pi++ = (l << 8) | (l2 >> 24);
l = l2;
}
ps = (u16 *)pi;
*ps++ = ((l >> 8) & 0xffff);
pb = (u8 *)ps;
*pb = l;
break;
}
}
}
}
EXPORT_SYMBOL(insl);
|
