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1da177e4 LT |
1 | /* |
2 | ********************************************************************** | |
3 | * cardwi.c - PCM input HAL for emu10k1 driver | |
4 | * Copyright 1999, 2000 Creative Labs, Inc. | |
5 | * | |
6 | ********************************************************************** | |
7 | * | |
8 | * Date Author Summary of changes | |
9 | * ---- ------ ------------------ | |
10 | * October 20, 1999 Bertrand Lee base code release | |
11 | * | |
12 | ********************************************************************** | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or | |
15 | * modify it under the terms of the GNU General Public License as | |
16 | * published by the Free Software Foundation; either version 2 of | |
17 | * the License, or (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public | |
25 | * License along with this program; if not, write to the Free | |
26 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, | |
27 | * USA. | |
28 | * | |
29 | ********************************************************************** | |
30 | */ | |
31 | ||
32 | #include <linux/poll.h> | |
33 | #include "hwaccess.h" | |
34 | #include "timer.h" | |
35 | #include "recmgr.h" | |
36 | #include "audio.h" | |
37 | #include "cardwi.h" | |
38 | ||
39 | /** | |
40 | * query_format - returns a valid sound format | |
41 | * | |
42 | * This function will return a valid sound format as close | |
43 | * to the requested one as possible. | |
44 | */ | |
45 | static void query_format(int recsrc, struct wave_format *wave_fmt) | |
46 | { | |
47 | ||
48 | switch (recsrc) { | |
49 | case WAVERECORD_AC97: | |
50 | ||
51 | if ((wave_fmt->channels != 1) && (wave_fmt->channels != 2)) | |
52 | wave_fmt->channels = 2; | |
53 | ||
54 | if (wave_fmt->samplingrate >= (0xBB80 + 0xAC44) / 2) | |
55 | wave_fmt->samplingrate = 0xBB80; | |
56 | else if (wave_fmt->samplingrate >= (0xAC44 + 0x7D00) / 2) | |
57 | wave_fmt->samplingrate = 0xAC44; | |
58 | else if (wave_fmt->samplingrate >= (0x7D00 + 0x5DC0) / 2) | |
59 | wave_fmt->samplingrate = 0x7D00; | |
60 | else if (wave_fmt->samplingrate >= (0x5DC0 + 0x5622) / 2) | |
61 | wave_fmt->samplingrate = 0x5DC0; | |
62 | else if (wave_fmt->samplingrate >= (0x5622 + 0x3E80) / 2) | |
63 | wave_fmt->samplingrate = 0x5622; | |
64 | else if (wave_fmt->samplingrate >= (0x3E80 + 0x2B11) / 2) | |
65 | wave_fmt->samplingrate = 0x3E80; | |
66 | else if (wave_fmt->samplingrate >= (0x2B11 + 0x1F40) / 2) | |
67 | wave_fmt->samplingrate = 0x2B11; | |
68 | else | |
69 | wave_fmt->samplingrate = 0x1F40; | |
70 | ||
71 | switch (wave_fmt->id) { | |
72 | case AFMT_S16_LE: | |
73 | wave_fmt->bitsperchannel = 16; | |
74 | break; | |
75 | case AFMT_U8: | |
76 | wave_fmt->bitsperchannel = 8; | |
77 | break; | |
78 | default: | |
79 | wave_fmt->id = AFMT_S16_LE; | |
80 | wave_fmt->bitsperchannel = 16; | |
81 | break; | |
82 | } | |
83 | ||
84 | break; | |
85 | ||
86 | /* these can't be changed from the original values */ | |
87 | case WAVERECORD_MIC: | |
88 | case WAVERECORD_FX: | |
89 | break; | |
90 | ||
91 | default: | |
92 | BUG(); | |
93 | break; | |
94 | } | |
95 | ||
96 | wave_fmt->bytesperchannel = wave_fmt->bitsperchannel >> 3; | |
97 | wave_fmt->bytespersample = wave_fmt->channels * wave_fmt->bytesperchannel; | |
98 | wave_fmt->bytespersec = wave_fmt->bytespersample * wave_fmt->samplingrate; | |
99 | wave_fmt->bytespervoicesample = wave_fmt->bytespersample; | |
100 | } | |
101 | ||
102 | static int alloc_buffer(struct emu10k1_card *card, struct wavein_buffer *buffer) | |
103 | { | |
104 | buffer->addr = pci_alloc_consistent(card->pci_dev, buffer->size * buffer->cov, | |
105 | &buffer->dma_handle); | |
106 | if (buffer->addr == NULL) | |
107 | return -1; | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
112 | static void free_buffer(struct emu10k1_card *card, struct wavein_buffer *buffer) | |
113 | { | |
114 | if (buffer->addr != NULL) | |
115 | pci_free_consistent(card->pci_dev, buffer->size * buffer->cov, | |
116 | buffer->addr, buffer->dma_handle); | |
117 | } | |
118 | ||
119 | int emu10k1_wavein_open(struct emu10k1_wavedevice *wave_dev) | |
120 | { | |
121 | struct emu10k1_card *card = wave_dev->card; | |
122 | struct wiinst *wiinst = wave_dev->wiinst; | |
123 | struct wiinst **wiinst_tmp = NULL; | |
124 | u16 delay; | |
125 | unsigned long flags; | |
126 | ||
127 | DPF(2, "emu10k1_wavein_open()\n"); | |
128 | ||
129 | switch (wiinst->recsrc) { | |
130 | case WAVERECORD_AC97: | |
131 | wiinst_tmp = &card->wavein.ac97; | |
132 | break; | |
133 | case WAVERECORD_MIC: | |
134 | wiinst_tmp = &card->wavein.mic; | |
135 | break; | |
136 | case WAVERECORD_FX: | |
137 | wiinst_tmp = &card->wavein.fx; | |
138 | break; | |
139 | default: | |
140 | BUG(); | |
141 | break; | |
142 | } | |
143 | ||
144 | spin_lock_irqsave(&card->lock, flags); | |
145 | if (*wiinst_tmp != NULL) { | |
146 | spin_unlock_irqrestore(&card->lock, flags); | |
147 | return -1; | |
148 | } | |
149 | ||
150 | *wiinst_tmp = wiinst; | |
151 | spin_unlock_irqrestore(&card->lock, flags); | |
152 | ||
153 | /* handle 8 bit recording */ | |
154 | if (wiinst->format.bytesperchannel == 1) { | |
155 | if (wiinst->buffer.size > 0x8000) { | |
156 | wiinst->buffer.size = 0x8000; | |
157 | wiinst->buffer.sizeregval = 0x1f; | |
158 | } else | |
159 | wiinst->buffer.sizeregval += 4; | |
160 | ||
161 | wiinst->buffer.cov = 2; | |
162 | } else | |
163 | wiinst->buffer.cov = 1; | |
164 | ||
165 | if (alloc_buffer(card, &wiinst->buffer) < 0) { | |
166 | ERROR(); | |
167 | return -1; | |
168 | } | |
169 | ||
170 | emu10k1_set_record_src(card, wiinst); | |
171 | ||
172 | emu10k1_reset_record(card, &wiinst->buffer); | |
173 | ||
174 | wiinst->buffer.hw_pos = 0; | |
175 | wiinst->buffer.pos = 0; | |
176 | wiinst->buffer.bytestocopy = 0; | |
177 | ||
178 | delay = (48000 * wiinst->buffer.fragment_size) / wiinst->format.bytespersec; | |
179 | ||
180 | emu10k1_timer_install(card, &wiinst->timer, delay / 2); | |
181 | ||
182 | wiinst->state = WAVE_STATE_OPEN; | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | void emu10k1_wavein_close(struct emu10k1_wavedevice *wave_dev) | |
188 | { | |
189 | struct emu10k1_card *card = wave_dev->card; | |
190 | struct wiinst *wiinst = wave_dev->wiinst; | |
191 | unsigned long flags; | |
192 | ||
193 | DPF(2, "emu10k1_wavein_close()\n"); | |
194 | ||
195 | emu10k1_wavein_stop(wave_dev); | |
196 | ||
197 | emu10k1_timer_uninstall(card, &wiinst->timer); | |
198 | ||
199 | free_buffer(card, &wiinst->buffer); | |
200 | ||
201 | spin_lock_irqsave(&card->lock, flags); | |
202 | switch (wave_dev->wiinst->recsrc) { | |
203 | case WAVERECORD_AC97: | |
204 | card->wavein.ac97 = NULL; | |
205 | break; | |
206 | case WAVERECORD_MIC: | |
207 | card->wavein.mic = NULL; | |
208 | break; | |
209 | case WAVERECORD_FX: | |
210 | card->wavein.fx = NULL; | |
211 | break; | |
212 | default: | |
213 | BUG(); | |
214 | break; | |
215 | } | |
216 | spin_unlock_irqrestore(&card->lock, flags); | |
217 | ||
218 | wiinst->state = WAVE_STATE_CLOSED; | |
219 | } | |
220 | ||
221 | void emu10k1_wavein_start(struct emu10k1_wavedevice *wave_dev) | |
222 | { | |
223 | struct emu10k1_card *card = wave_dev->card; | |
224 | struct wiinst *wiinst = wave_dev->wiinst; | |
225 | ||
226 | DPF(2, "emu10k1_wavein_start()\n"); | |
227 | ||
228 | emu10k1_start_record(card, &wiinst->buffer); | |
229 | emu10k1_timer_enable(wave_dev->card, &wiinst->timer); | |
230 | ||
231 | wiinst->state |= WAVE_STATE_STARTED; | |
232 | } | |
233 | ||
234 | void emu10k1_wavein_stop(struct emu10k1_wavedevice *wave_dev) | |
235 | { | |
236 | struct emu10k1_card *card = wave_dev->card; | |
237 | struct wiinst *wiinst = wave_dev->wiinst; | |
238 | ||
239 | DPF(2, "emu10k1_wavein_stop()\n"); | |
240 | ||
241 | if (!(wiinst->state & WAVE_STATE_STARTED)) | |
242 | return; | |
243 | ||
244 | emu10k1_timer_disable(card, &wiinst->timer); | |
245 | emu10k1_stop_record(card, &wiinst->buffer); | |
246 | ||
247 | wiinst->state &= ~WAVE_STATE_STARTED; | |
248 | } | |
249 | ||
250 | int emu10k1_wavein_setformat(struct emu10k1_wavedevice *wave_dev, struct wave_format *format) | |
251 | { | |
252 | struct emu10k1_card *card = wave_dev->card; | |
253 | struct wiinst *wiinst = wave_dev->wiinst; | |
254 | u16 delay; | |
255 | ||
256 | DPF(2, "emu10k1_wavein_setformat()\n"); | |
257 | ||
258 | if (wiinst->state & WAVE_STATE_STARTED) | |
259 | return -1; | |
260 | ||
261 | query_format(wiinst->recsrc, format); | |
262 | ||
263 | if ((wiinst->format.samplingrate != format->samplingrate) | |
264 | || (wiinst->format.bitsperchannel != format->bitsperchannel) | |
265 | || (wiinst->format.channels != format->channels)) { | |
266 | ||
267 | wiinst->format = *format; | |
268 | ||
269 | if (wiinst->state == WAVE_STATE_CLOSED) | |
270 | return 0; | |
271 | ||
272 | wiinst->buffer.size *= wiinst->buffer.cov; | |
273 | ||
274 | if (wiinst->format.bytesperchannel == 1) { | |
275 | wiinst->buffer.cov = 2; | |
276 | wiinst->buffer.size /= wiinst->buffer.cov; | |
277 | } else | |
278 | wiinst->buffer.cov = 1; | |
279 | ||
280 | emu10k1_timer_uninstall(card, &wiinst->timer); | |
281 | ||
282 | delay = (48000 * wiinst->buffer.fragment_size) / wiinst->format.bytespersec; | |
283 | ||
284 | emu10k1_timer_install(card, &wiinst->timer, delay / 2); | |
285 | } | |
286 | ||
287 | return 0; | |
288 | } | |
289 | ||
290 | void emu10k1_wavein_getxfersize(struct wiinst *wiinst, u32 * size) | |
291 | { | |
292 | struct wavein_buffer *buffer = &wiinst->buffer; | |
293 | ||
294 | *size = buffer->bytestocopy; | |
295 | ||
296 | if (wiinst->mmapped) | |
297 | return; | |
298 | ||
299 | if (*size > buffer->size) { | |
300 | *size = buffer->size; | |
301 | buffer->pos = buffer->hw_pos; | |
302 | buffer->bytestocopy = buffer->size; | |
303 | DPF(1, "buffer overrun\n"); | |
304 | } | |
305 | } | |
306 | ||
e45f4676 | 307 | static int copy_block(u8 __user *dst, u8 * src, u32 str, u32 len, u8 cov) |
1da177e4 | 308 | { |
e45f4676 JG |
309 | if (cov == 1) { |
310 | if (__copy_to_user(dst, src + str, len)) | |
311 | return -EFAULT; | |
312 | } else { | |
1da177e4 LT |
313 | u8 byte; |
314 | u32 i; | |
315 | ||
316 | src += 1 + 2 * str; | |
317 | ||
318 | for (i = 0; i < len; i++) { | |
319 | byte = src[2 * i] ^ 0x80; | |
e45f4676 JG |
320 | if (__copy_to_user(dst + i, &byte, 1)) |
321 | return -EFAULT; | |
1da177e4 LT |
322 | } |
323 | } | |
e45f4676 JG |
324 | |
325 | return 0; | |
1da177e4 LT |
326 | } |
327 | ||
e45f4676 | 328 | int emu10k1_wavein_xferdata(struct wiinst *wiinst, u8 __user *data, u32 * size) |
1da177e4 LT |
329 | { |
330 | struct wavein_buffer *buffer = &wiinst->buffer; | |
331 | u32 sizetocopy, sizetocopy_now, start; | |
332 | unsigned long flags; | |
e45f4676 | 333 | int ret; |
1da177e4 LT |
334 | |
335 | sizetocopy = min_t(u32, buffer->size, *size); | |
336 | *size = sizetocopy; | |
337 | ||
338 | if (!sizetocopy) | |
e45f4676 | 339 | return 0; |
1da177e4 LT |
340 | |
341 | spin_lock_irqsave(&wiinst->lock, flags); | |
342 | start = buffer->pos; | |
343 | buffer->pos += sizetocopy; | |
344 | buffer->pos %= buffer->size; | |
345 | buffer->bytestocopy -= sizetocopy; | |
346 | sizetocopy_now = buffer->size - start; | |
347 | ||
348 | spin_unlock_irqrestore(&wiinst->lock, flags); | |
349 | ||
350 | if (sizetocopy > sizetocopy_now) { | |
351 | sizetocopy -= sizetocopy_now; | |
352 | ||
e45f4676 JG |
353 | ret = copy_block(data, buffer->addr, start, sizetocopy_now, |
354 | buffer->cov); | |
355 | if (ret == 0) | |
356 | ret = copy_block(data + sizetocopy_now, buffer->addr, 0, | |
357 | sizetocopy, buffer->cov); | |
1da177e4 | 358 | } else { |
e45f4676 JG |
359 | ret = copy_block(data, buffer->addr, start, sizetocopy, |
360 | buffer->cov); | |
1da177e4 | 361 | } |
e45f4676 JG |
362 | |
363 | return ret; | |
1da177e4 LT |
364 | } |
365 | ||
366 | void emu10k1_wavein_update(struct emu10k1_card *card, struct wiinst *wiinst) | |
367 | { | |
368 | u32 hw_pos; | |
369 | u32 diff; | |
370 | ||
371 | /* There is no actual start yet */ | |
372 | if (!(wiinst->state & WAVE_STATE_STARTED)) { | |
373 | hw_pos = wiinst->buffer.hw_pos; | |
374 | } else { | |
375 | /* hw_pos in byte units */ | |
376 | hw_pos = sblive_readptr(card, wiinst->buffer.idxreg, 0) / wiinst->buffer.cov; | |
377 | } | |
378 | ||
379 | diff = (wiinst->buffer.size + hw_pos - wiinst->buffer.hw_pos) % wiinst->buffer.size; | |
380 | wiinst->total_recorded += diff; | |
381 | wiinst->buffer.bytestocopy += diff; | |
382 | ||
383 | wiinst->buffer.hw_pos = hw_pos; | |
384 | } |