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b1526421 AW |
1 | /* |
2 | * cx18 driver PCI memory mapped IO access routines | |
3 | * | |
4 | * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> | |
5 | * Copyright (C) 2008 Andy Walls <awalls@radix.net> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
20 | * 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #ifndef CX18_IO_H | |
24 | #define CX18_IO_H | |
25 | ||
26 | #include "cx18-driver.h" | |
27 | ||
c641d09c AW |
28 | static inline void cx18_io_delay(struct cx18 *cx) |
29 | { | |
30 | if (cx->options.mmio_ndelay) | |
31 | ndelay(cx->options.mmio_ndelay); | |
32 | } | |
b1526421 | 33 | |
d267d851 AW |
34 | /* |
35 | * Readback and retry of MMIO access for reliability: | |
36 | * The concept was suggested by Steve Toth <stoth@linuxtv.org>. | |
37 | * The implmentation is the fault of Andy Walls <awalls@radix.net>. | |
38 | */ | |
39 | ||
40 | /* Statistics gathering */ | |
41 | static inline | |
06869713 | 42 | void cx18_log_write_retries(struct cx18 *cx, int i, const void __iomem *addr) |
d267d851 | 43 | { |
f7823f8f AW |
44 | if (i > CX18_MAX_MMIO_WR_RETRIES) |
45 | i = CX18_MAX_MMIO_WR_RETRIES; | |
d267d851 AW |
46 | atomic_inc(&cx->mmio_stats.retried_write[i]); |
47 | return; | |
48 | } | |
49 | ||
50 | static inline | |
06869713 | 51 | void cx18_log_read_retries(struct cx18 *cx, int i, const void __iomem *addr) |
d267d851 | 52 | { |
f7823f8f AW |
53 | if (i > CX18_MAX_MMIO_RD_RETRIES) |
54 | i = CX18_MAX_MMIO_RD_RETRIES; | |
d267d851 AW |
55 | atomic_inc(&cx->mmio_stats.retried_read[i]); |
56 | return; | |
57 | } | |
58 | ||
59 | void cx18_log_statistics(struct cx18 *cx); | |
60 | ||
c641d09c | 61 | /* Non byteswapping memory mapped IO */ |
d267d851 AW |
62 | static inline |
63 | void cx18_raw_writel_noretry(struct cx18 *cx, u32 val, void __iomem *addr) | |
c641d09c AW |
64 | { |
65 | __raw_writel(val, addr); | |
66 | cx18_io_delay(cx); | |
67 | } | |
b1526421 | 68 | |
d267d851 AW |
69 | void cx18_raw_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr); |
70 | ||
71 | static inline void cx18_raw_writel(struct cx18 *cx, u32 val, void __iomem *addr) | |
72 | { | |
73 | if (cx18_retry_mmio) | |
74 | cx18_raw_writel_retry(cx, val, addr); | |
75 | else | |
76 | cx18_raw_writel_noretry(cx, val, addr); | |
77 | } | |
78 | ||
79 | ||
80 | static inline | |
81 | u32 cx18_raw_readl_noretry(struct cx18 *cx, const void __iomem *addr) | |
c641d09c AW |
82 | { |
83 | u32 ret = __raw_readl(addr); | |
84 | cx18_io_delay(cx); | |
85 | return ret; | |
86 | } | |
b1526421 | 87 | |
d267d851 AW |
88 | u32 cx18_raw_readl_retry(struct cx18 *cx, const void __iomem *addr); |
89 | ||
90 | static inline u32 cx18_raw_readl(struct cx18 *cx, const void __iomem *addr) | |
91 | { | |
92 | if (cx18_retry_mmio) | |
93 | return cx18_raw_readl_retry(cx, addr); | |
94 | ||
95 | return cx18_raw_readl_noretry(cx, addr); | |
96 | } | |
97 | ||
98 | ||
99 | static inline | |
100 | u16 cx18_raw_readw_noretry(struct cx18 *cx, const void __iomem *addr) | |
c641d09c AW |
101 | { |
102 | u16 ret = __raw_readw(addr); | |
103 | cx18_io_delay(cx); | |
104 | return ret; | |
105 | } | |
b1526421 | 106 | |
d267d851 AW |
107 | u16 cx18_raw_readw_retry(struct cx18 *cx, const void __iomem *addr); |
108 | ||
109 | static inline u16 cx18_raw_readw(struct cx18 *cx, const void __iomem *addr) | |
110 | { | |
111 | if (cx18_retry_mmio) | |
112 | return cx18_raw_readw_retry(cx, addr); | |
113 | ||
114 | return cx18_raw_readw_noretry(cx, addr); | |
115 | } | |
116 | ||
117 | ||
c641d09c | 118 | /* Normal memory mapped IO */ |
d267d851 AW |
119 | static inline |
120 | void cx18_writel_noretry(struct cx18 *cx, u32 val, void __iomem *addr) | |
c641d09c AW |
121 | { |
122 | writel(val, addr); | |
123 | cx18_io_delay(cx); | |
124 | } | |
b1526421 | 125 | |
d267d851 AW |
126 | void cx18_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr); |
127 | ||
128 | static inline void cx18_writel(struct cx18 *cx, u32 val, void __iomem *addr) | |
129 | { | |
130 | if (cx18_retry_mmio) | |
131 | cx18_writel_retry(cx, val, addr); | |
132 | else | |
133 | cx18_writel_noretry(cx, val, addr); | |
134 | } | |
135 | ||
f056d29e AW |
136 | void _cx18_writel_expect(struct cx18 *cx, u32 val, void __iomem *addr, |
137 | u32 eval, u32 mask); | |
d267d851 AW |
138 | |
139 | static inline | |
140 | void cx18_writew_noretry(struct cx18 *cx, u16 val, void __iomem *addr) | |
c641d09c AW |
141 | { |
142 | writew(val, addr); | |
143 | cx18_io_delay(cx); | |
144 | } | |
145 | ||
d267d851 AW |
146 | void cx18_writew_retry(struct cx18 *cx, u16 val, void __iomem *addr); |
147 | ||
148 | static inline void cx18_writew(struct cx18 *cx, u16 val, void __iomem *addr) | |
149 | { | |
150 | if (cx18_retry_mmio) | |
151 | cx18_writew_retry(cx, val, addr); | |
152 | else | |
153 | cx18_writew_noretry(cx, val, addr); | |
154 | } | |
155 | ||
156 | ||
157 | static inline | |
158 | void cx18_writeb_noretry(struct cx18 *cx, u8 val, void __iomem *addr) | |
c641d09c AW |
159 | { |
160 | writeb(val, addr); | |
161 | cx18_io_delay(cx); | |
162 | } | |
163 | ||
d267d851 AW |
164 | void cx18_writeb_retry(struct cx18 *cx, u8 val, void __iomem *addr); |
165 | ||
166 | static inline void cx18_writeb(struct cx18 *cx, u8 val, void __iomem *addr) | |
167 | { | |
168 | if (cx18_retry_mmio) | |
169 | cx18_writeb_retry(cx, val, addr); | |
170 | else | |
171 | cx18_writeb_noretry(cx, val, addr); | |
172 | } | |
173 | ||
174 | ||
175 | static inline u32 cx18_readl_noretry(struct cx18 *cx, const void __iomem *addr) | |
c641d09c AW |
176 | { |
177 | u32 ret = readl(addr); | |
178 | cx18_io_delay(cx); | |
179 | return ret; | |
180 | } | |
181 | ||
d267d851 AW |
182 | u32 cx18_readl_retry(struct cx18 *cx, const void __iomem *addr); |
183 | ||
184 | static inline u32 cx18_readl(struct cx18 *cx, const void __iomem *addr) | |
185 | { | |
186 | if (cx18_retry_mmio) | |
187 | return cx18_readl_retry(cx, addr); | |
188 | ||
189 | return cx18_readl_noretry(cx, addr); | |
190 | } | |
191 | ||
192 | ||
193 | static inline u16 cx18_readw_noretry(struct cx18 *cx, const void __iomem *addr) | |
194 | { | |
195 | u16 ret = readw(addr); | |
196 | cx18_io_delay(cx); | |
197 | return ret; | |
198 | } | |
199 | ||
200 | u16 cx18_readw_retry(struct cx18 *cx, const void __iomem *addr); | |
201 | ||
202 | static inline u16 cx18_readw(struct cx18 *cx, const void __iomem *addr) | |
203 | { | |
204 | if (cx18_retry_mmio) | |
205 | return cx18_readw_retry(cx, addr); | |
206 | ||
207 | return cx18_readw_noretry(cx, addr); | |
208 | } | |
209 | ||
210 | ||
211 | static inline u8 cx18_readb_noretry(struct cx18 *cx, const void __iomem *addr) | |
c641d09c AW |
212 | { |
213 | u8 ret = readb(addr); | |
214 | cx18_io_delay(cx); | |
215 | return ret; | |
216 | } | |
217 | ||
d267d851 AW |
218 | u8 cx18_readb_retry(struct cx18 *cx, const void __iomem *addr); |
219 | ||
220 | static inline u8 cx18_readb(struct cx18 *cx, const void __iomem *addr) | |
221 | { | |
222 | if (cx18_retry_mmio) | |
223 | return cx18_readb_retry(cx, addr); | |
224 | ||
225 | return cx18_readb_noretry(cx, addr); | |
226 | } | |
227 | ||
228 | ||
229 | static inline | |
230 | u32 cx18_write_sync_noretry(struct cx18 *cx, u32 val, void __iomem *addr) | |
231 | { | |
232 | cx18_writel_noretry(cx, val, addr); | |
233 | return cx18_readl_noretry(cx, addr); | |
234 | } | |
235 | ||
236 | static inline | |
237 | u32 cx18_write_sync_retry(struct cx18 *cx, u32 val, void __iomem *addr) | |
238 | { | |
239 | cx18_writel_retry(cx, val, addr); | |
240 | return cx18_readl_retry(cx, addr); | |
241 | } | |
242 | ||
c641d09c AW |
243 | static inline u32 cx18_write_sync(struct cx18 *cx, u32 val, void __iomem *addr) |
244 | { | |
d267d851 AW |
245 | if (cx18_retry_mmio) |
246 | return cx18_write_sync_retry(cx, val, addr); | |
247 | ||
248 | return cx18_write_sync_noretry(cx, val, addr); | |
c641d09c | 249 | } |
b1526421 | 250 | |
d267d851 | 251 | |
ee2d64f5 | 252 | static inline |
b1526421 | 253 | void cx18_memcpy_fromio(struct cx18 *cx, void *to, |
ee2d64f5 AW |
254 | const void __iomem *from, unsigned int len) |
255 | { | |
256 | memcpy_fromio(to, from, len); | |
257 | } | |
258 | ||
b1526421 AW |
259 | void cx18_memset_io(struct cx18 *cx, void __iomem *addr, int val, size_t count); |
260 | ||
d267d851 | 261 | |
c641d09c | 262 | /* Access "register" region of CX23418 memory mapped I/O */ |
d267d851 AW |
263 | static inline void cx18_write_reg_noretry(struct cx18 *cx, u32 val, u32 reg) |
264 | { | |
265 | cx18_writel_noretry(cx, val, cx->reg_mem + reg); | |
266 | } | |
267 | ||
268 | static inline void cx18_write_reg_retry(struct cx18 *cx, u32 val, u32 reg) | |
269 | { | |
270 | cx18_writel_retry(cx, val, cx->reg_mem + reg); | |
271 | } | |
272 | ||
c641d09c AW |
273 | static inline void cx18_write_reg(struct cx18 *cx, u32 val, u32 reg) |
274 | { | |
d267d851 AW |
275 | if (cx18_retry_mmio) |
276 | cx18_write_reg_retry(cx, val, reg); | |
277 | else | |
278 | cx18_write_reg_noretry(cx, val, reg); | |
279 | } | |
280 | ||
f056d29e AW |
281 | static inline void _cx18_write_reg_expect(struct cx18 *cx, u32 val, u32 reg, |
282 | u32 eval, u32 mask) | |
283 | { | |
284 | _cx18_writel_expect(cx, val, cx->reg_mem + reg, eval, mask); | |
285 | } | |
286 | ||
287 | static inline void cx18_write_reg_expect(struct cx18 *cx, u32 val, u32 reg, | |
288 | u32 eval, u32 mask) | |
289 | { | |
290 | if (cx18_retry_mmio) | |
291 | _cx18_write_reg_expect(cx, val, reg, eval, mask); | |
292 | else | |
293 | cx18_write_reg_noretry(cx, val, reg); | |
294 | } | |
295 | ||
d267d851 AW |
296 | |
297 | static inline u32 cx18_read_reg_noretry(struct cx18 *cx, u32 reg) | |
298 | { | |
299 | return cx18_readl_noretry(cx, cx->reg_mem + reg); | |
300 | } | |
301 | ||
302 | static inline u32 cx18_read_reg_retry(struct cx18 *cx, u32 reg) | |
303 | { | |
304 | return cx18_readl_retry(cx, cx->reg_mem + reg); | |
c641d09c AW |
305 | } |
306 | ||
307 | static inline u32 cx18_read_reg(struct cx18 *cx, u32 reg) | |
308 | { | |
d267d851 AW |
309 | if (cx18_retry_mmio) |
310 | return cx18_read_reg_retry(cx, reg); | |
311 | ||
312 | return cx18_read_reg_noretry(cx, reg); | |
313 | } | |
314 | ||
315 | ||
316 | static inline u32 cx18_write_reg_sync_noretry(struct cx18 *cx, u32 val, u32 reg) | |
317 | { | |
318 | return cx18_write_sync_noretry(cx, val, cx->reg_mem + reg); | |
319 | } | |
320 | ||
321 | static inline u32 cx18_write_reg_sync_retry(struct cx18 *cx, u32 val, u32 reg) | |
322 | { | |
323 | return cx18_write_sync_retry(cx, val, cx->reg_mem + reg); | |
c641d09c AW |
324 | } |
325 | ||
326 | static inline u32 cx18_write_reg_sync(struct cx18 *cx, u32 val, u32 reg) | |
327 | { | |
d267d851 AW |
328 | if (cx18_retry_mmio) |
329 | return cx18_write_reg_sync_retry(cx, val, reg); | |
330 | ||
331 | return cx18_write_reg_sync_noretry(cx, val, reg); | |
c641d09c AW |
332 | } |
333 | ||
d267d851 | 334 | |
c641d09c | 335 | /* Access "encoder memory" region of CX23418 memory mapped I/O */ |
d267d851 AW |
336 | static inline void cx18_write_enc_noretry(struct cx18 *cx, u32 val, u32 addr) |
337 | { | |
338 | cx18_writel_noretry(cx, val, cx->enc_mem + addr); | |
339 | } | |
340 | ||
341 | static inline void cx18_write_enc_retry(struct cx18 *cx, u32 val, u32 addr) | |
342 | { | |
343 | cx18_writel_retry(cx, val, cx->enc_mem + addr); | |
344 | } | |
345 | ||
c641d09c AW |
346 | static inline void cx18_write_enc(struct cx18 *cx, u32 val, u32 addr) |
347 | { | |
d267d851 AW |
348 | if (cx18_retry_mmio) |
349 | cx18_write_enc_retry(cx, val, addr); | |
350 | else | |
351 | cx18_write_enc_noretry(cx, val, addr); | |
352 | } | |
353 | ||
354 | ||
355 | static inline u32 cx18_read_enc_noretry(struct cx18 *cx, u32 addr) | |
356 | { | |
357 | return cx18_readl_noretry(cx, cx->enc_mem + addr); | |
358 | } | |
359 | ||
360 | static inline u32 cx18_read_enc_retry(struct cx18 *cx, u32 addr) | |
361 | { | |
362 | return cx18_readl_retry(cx, cx->enc_mem + addr); | |
c641d09c AW |
363 | } |
364 | ||
365 | static inline u32 cx18_read_enc(struct cx18 *cx, u32 addr) | |
366 | { | |
d267d851 AW |
367 | if (cx18_retry_mmio) |
368 | return cx18_read_enc_retry(cx, addr); | |
369 | ||
370 | return cx18_read_enc_noretry(cx, addr); | |
371 | } | |
372 | ||
373 | static inline | |
374 | u32 cx18_write_enc_sync_noretry(struct cx18 *cx, u32 val, u32 addr) | |
375 | { | |
376 | return cx18_write_sync_noretry(cx, val, cx->enc_mem + addr); | |
c641d09c AW |
377 | } |
378 | ||
d267d851 AW |
379 | static inline |
380 | u32 cx18_write_enc_sync_retry(struct cx18 *cx, u32 val, u32 addr) | |
c641d09c | 381 | { |
d267d851 | 382 | return cx18_write_sync_retry(cx, val, cx->enc_mem + addr); |
c641d09c AW |
383 | } |
384 | ||
d267d851 AW |
385 | static inline |
386 | u32 cx18_write_enc_sync(struct cx18 *cx, u32 val, u32 addr) | |
387 | { | |
388 | if (cx18_retry_mmio) | |
389 | return cx18_write_enc_sync_retry(cx, val, addr); | |
390 | ||
391 | return cx18_write_enc_sync_noretry(cx, val, addr); | |
392 | } | |
c641d09c | 393 | |
b1526421 AW |
394 | void cx18_sw1_irq_enable(struct cx18 *cx, u32 val); |
395 | void cx18_sw1_irq_disable(struct cx18 *cx, u32 val); | |
396 | void cx18_sw2_irq_enable(struct cx18 *cx, u32 val); | |
397 | void cx18_sw2_irq_disable(struct cx18 *cx, u32 val); | |
d20ceecd | 398 | void cx18_sw2_irq_disable_cpu(struct cx18 *cx, u32 val); |
b1526421 AW |
399 | void cx18_setup_page(struct cx18 *cx, u32 addr); |
400 | ||
b1526421 | 401 | #endif /* CX18_IO_H */ |