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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
/*
* cx18 driver PCI memory mapped IO access routines
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
* Copyright (C) 2008 Andy Walls <awalls@radix.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
#include "cx18-driver.h"
#include "cx18-io.h"
#include "cx18-irq.h"
void cx18_log_statistics(struct cx18 *cx)
{
int i;
if (!(cx18_debug & CX18_DBGFLG_INFO))
return;
for (i = 0; i <= CX18_MAX_MMIO_RETRIES; i++)
CX18_DEBUG_INFO("retried_write[%d] = %d\n", i,
atomic_read(&cx->mmio_stats.retried_write[i]));
for (i = 0; i <= CX18_MAX_MMIO_RETRIES; i++)
CX18_DEBUG_INFO("retried_read[%d] = %d\n", i,
atomic_read(&cx->mmio_stats.retried_read[i]));
return;
}
void cx18_raw_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr)
{
int i;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
cx18_raw_writel_noretry(cx, val, addr);
if (val == cx18_raw_readl_noretry(cx, addr))
break;
}
cx18_log_write_retries(cx, i, addr);
}
u32 cx18_raw_readl_retry(struct cx18 *cx, const void __iomem *addr)
{
int i;
u32 val;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
val = cx18_raw_readl_noretry(cx, addr);
if (val != 0xffffffff) /* PCI bus read error */
break;
}
cx18_log_read_retries(cx, i, addr);
return val;
}
u16 cx18_raw_readw_retry(struct cx18 *cx, const void __iomem *addr)
{
int i;
u16 val;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
val = cx18_raw_readw_noretry(cx, addr);
if (val != 0xffff) /* PCI bus read error */
break;
}
cx18_log_read_retries(cx, i, addr);
return val;
}
void cx18_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr)
{
int i;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
cx18_writel_noretry(cx, val, addr);
if (val == cx18_readl_noretry(cx, addr))
break;
}
cx18_log_write_retries(cx, i, addr);
}
void _cx18_writel_expect(struct cx18 *cx, u32 val, void __iomem *addr,
u32 eval, u32 mask)
{
int i;
eval &= mask;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
cx18_writel_noretry(cx, val, addr);
if (eval == (cx18_readl_noretry(cx, addr) & mask))
break;
}
cx18_log_write_retries(cx, i, addr);
}
void cx18_writew_retry(struct cx18 *cx, u16 val, void __iomem *addr)
{
int i;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
cx18_writew_noretry(cx, val, addr);
if (val == cx18_readw_noretry(cx, addr))
break;
}
cx18_log_write_retries(cx, i, addr);
}
void cx18_writeb_retry(struct cx18 *cx, u8 val, void __iomem *addr)
{
int i;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
cx18_writeb_noretry(cx, val, addr);
if (val == cx18_readb_noretry(cx, addr))
break;
}
cx18_log_write_retries(cx, i, addr);
}
u32 cx18_readl_retry(struct cx18 *cx, const void __iomem *addr)
{
int i;
u32 val;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
val = cx18_readl_noretry(cx, addr);
if (val != 0xffffffff) /* PCI bus read error */
break;
}
cx18_log_read_retries(cx, i, addr);
return val;
}
u16 cx18_readw_retry(struct cx18 *cx, const void __iomem *addr)
{
int i;
u16 val;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
val = cx18_readw_noretry(cx, addr);
if (val != 0xffff) /* PCI bus read error */
break;
}
cx18_log_read_retries(cx, i, addr);
return val;
}
u8 cx18_readb_retry(struct cx18 *cx, const void __iomem *addr)
{
int i;
u8 val;
for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
val = cx18_readb_noretry(cx, addr);
if (val != 0xff) /* PCI bus read error */
break;
}
cx18_log_read_retries(cx, i, addr);
return val;
}
void cx18_memcpy_fromio(struct cx18 *cx, void *to,
const void __iomem *from, unsigned int len)
{
const u8 __iomem *src = from;
u8 *dst = to;
/* Align reads on the CX23418's addresses */
if ((len > 0) && ((unsigned long) src & 1)) {
*dst = cx18_readb(cx, src);
len--;
dst++;
src++;
}
if ((len > 1) && ((unsigned long) src & 2)) {
*((u16 *)dst) = cx18_raw_readw(cx, src);
len -= 2;
dst += 2;
src += 2;
}
while (len > 3) {
*((u32 *)dst) = cx18_raw_readl(cx, src);
len -= 4;
dst += 4;
src += 4;
}
if (len > 1) {
*((u16 *)dst) = cx18_raw_readw(cx, src);
len -= 2;
dst += 2;
src += 2;
}
if (len > 0)
*dst = cx18_readb(cx, src);
}
void cx18_memset_io(struct cx18 *cx, void __iomem *addr, int val, size_t count)
{
u8 __iomem *dst = addr;
u16 val2 = val | (val << 8);
u32 val4 = val2 | (val2 << 16);
/* Align writes on the CX23418's addresses */
if ((count > 0) && ((unsigned long)dst & 1)) {
cx18_writeb(cx, (u8) val, dst);
count--;
dst++;
}
if ((count > 1) && ((unsigned long)dst & 2)) {
cx18_writew(cx, val2, dst);
count -= 2;
dst += 2;
}
while (count > 3) {
cx18_writel(cx, val4, dst);
count -= 4;
dst += 4;
}
if (count > 1) {
cx18_writew(cx, val2, dst);
count -= 2;
dst += 2;
}
if (count > 0)
cx18_writeb(cx, (u8) val, dst);
}
void cx18_sw1_irq_enable(struct cx18 *cx, u32 val)
{
u32 r;
cx18_write_reg_expect(cx, val, SW1_INT_STATUS, ~val, val);
r = cx18_read_reg(cx, SW1_INT_ENABLE_PCI);
cx18_write_reg(cx, r | val, SW1_INT_ENABLE_PCI);
}
void cx18_sw1_irq_disable(struct cx18 *cx, u32 val)
{
u32 r;
r = cx18_read_reg(cx, SW1_INT_ENABLE_PCI);
cx18_write_reg(cx, r & ~val, SW1_INT_ENABLE_PCI);
}
void cx18_sw2_irq_enable(struct cx18 *cx, u32 val)
{
u32 r;
cx18_write_reg_expect(cx, val, SW2_INT_STATUS, ~val, val);
r = cx18_read_reg(cx, SW2_INT_ENABLE_PCI);
cx18_write_reg(cx, r | val, SW2_INT_ENABLE_PCI);
}
void cx18_sw2_irq_disable(struct cx18 *cx, u32 val)
{
u32 r;
r = cx18_read_reg(cx, SW2_INT_ENABLE_PCI);
cx18_write_reg(cx, r & ~val, SW2_INT_ENABLE_PCI);
}
void cx18_setup_page(struct cx18 *cx, u32 addr)
{
u32 val;
val = cx18_read_reg(cx, 0xD000F8);
val = (val & ~0x1f00) | ((addr >> 17) & 0x1f00);
cx18_write_reg(cx, val, 0xD000F8);
}
|
