?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Document Linux Memory Policy
[linux-2.6/mini2440.git] / sound / oss / trident.c
blob96adc47917aa538b57c60ac67ef7f11fe6deb881
1 /*
2 * OSS driver for Linux 2.[46].x for
3 *
4 * Trident 4D-Wave
5 * SiS 7018
6 * ALi 5451
7 * Tvia/IGST CyberPro 5050
8 *
9 * Driver: Alan Cox <alan@redhat.com>
10 *
11 * Built from:
12 * Low level code: <audio@tridentmicro.com> from ALSA
13 * Framework: Thomas Sailer <sailer@ife.ee.ethz.ch>
14 * Extended by: Zach Brown <zab@redhat.com>
15 *
16 * Hacked up by:
17 * Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
18 * Ollie Lho <ollie@sis.com.tw> SiS 7018 Audio Core Support
19 * Ching-Ling Lee <cling-li@ali.com.tw> ALi 5451 Audio Core Support
20 * Matt Wu <mattwu@acersoftech.com.cn> ALi 5451 Audio Core Support
21 * Peter Wächtler <pwaechtler@loewe-komp.de> CyberPro5050 support
22 * Muli Ben-Yehuda <mulix@mulix.org>
23 *
24 *
25 * This program is free software; you can redistribute it and/or modify
26 * it under the terms of the GNU General Public License as published by
27 * the Free Software Foundation; either version 2 of the License, or
28 * (at your option) any later version.
29 *
30 * This program is distributed in the hope that it will be useful,
31 * but WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33 * GNU General Public License for more details.
34 *
35 * You should have received a copy of the GNU General Public License
36 * along with this program; if not, write to the Free Software
37 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
38 *
39 * History
40 * v0.14.10j
41 * January 3 2004 Eugene Teo <eugeneteo@eugeneteo.net>
42 * minor cleanup to use pr_debug instead of TRDBG since it is already
43 * defined in linux/kernel.h.
44 * v0.14.10i
45 * December 29 2003 Muli Ben-Yehuda <mulix@mulix.org>
46 * major cleanup for 2.6, fix a few error patch buglets
47 * with returning without properly cleaning up first,
48 * get rid of lock_kernel().
49 * v0.14.10h
50 * Sept 10 2002 Pascal Schmidt <der.eremit@email.de>
51 * added support for ALi 5451 joystick port
52 * v0.14.10g
53 * Sept 05 2002 Alan Cox <alan@redhat.com>
54 * adapt to new pci joystick attachment interface
55 * v0.14.10f
56 * July 24 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
57 * patch from Eric Lemar (via Ian Soboroff): in suspend and resume,
58 * fix wrong cast from pci_dev* to struct trident_card*.
59 * v0.14.10e
60 * July 19 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
61 * rewrite the DMA buffer allocation/deallcoation functions, to make it
62 * modular and fix a bug where we would call free_pages on memory
63 * obtained with pci_alloc_consistent. Also remove unnecessary #ifdef
64 * CONFIG_PROC_FS and various other cleanups.
65 * v0.14.10d
66 * July 19 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
67 * made several printk(KERN_NOTICE...) into TRDBG(...), to avoid spamming
68 * my syslog with hundreds of messages.
69 * v0.14.10c
70 * July 16 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
71 * Cleaned up Lei Hu's 0.4.10 driver to conform to Documentation/CodingStyle
72 * and the coding style used in the rest of the file.
73 * v0.14.10b
74 * June 23 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
75 * add a missing unlock_set_fmt, remove a superflous lock/unlock pair
76 * with nothing in between.
77 * v0.14.10a
78 * June 21 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
79 * use a debug macro instead of #ifdef CONFIG_DEBUG, trim to 80 columns
80 * per line, use 'do {} while (0)' in statement macros.
81 * v0.14.10
82 * June 6 2002 Lei Hu <Lei_hu@ali.com.tw>
83 * rewrite the part to read/write registers of audio codec for Ali5451
84 * v0.14.9e
85 * January 2 2002 Vojtech Pavlik <vojtech@ucw.cz> added gameport
86 * support to avoid resource conflict with pcigame.c
87 * v0.14.9d
88 * October 8 2001 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
89 * use set_current_state, properly release resources on failure in
90 * trident_probe, get rid of check_region
91 * v0.14.9c
92 * August 10 2001 Peter Wächtler <pwaechtler@loewe-komp.de>
93 * added support for Tvia (formerly Integraphics/IGST) CyberPro5050
94 * this chip is often found in settop boxes (combined video+audio)
95 * v0.14.9b
96 * Switch to static inline not extern inline (gcc 3)
97 * v0.14.9a
98 * Aug 6 2001 Alan Cox
99 * 0.14.9 crashed on rmmod due to a timer/bh left running. Simplified
100 * the existing logic (the BH doesn't help as ac97 is lock_irqsave)
101 * and used del_timer_sync to clean up
102 * Fixed a problem where the ALi change broke my generic card
103 * v0.14.9
104 * Jul 10 2001 Matt Wu
105 * Add H/W Volume Control
106 * v0.14.8a
107 * July 7 2001 Alan Cox
108 * Moved Matt Wu's ac97 register cache into the card structure
109 * v0.14.8
110 * Apr 30 2001 Matt Wu
111 * Set EBUF1 and EBUF2 to still mode
112 * Add dc97/ac97 reset function
113 * Fix power management: ali_restore_regs
114 * unreleased
115 * Mar 09 2001 Matt Wu
116 * Add cache for ac97 access
117 * v0.14.7
118 * Feb 06 2001 Matt Wu
119 * Fix ac97 initialization
120 * Fix bug: an extra tail will be played when playing
121 * Jan 05 2001 Matt Wu
122 * Implement multi-channels and S/PDIF in support for ALi 1535+
123 * v0.14.6
124 * Nov 1 2000 Ching-Ling Lee
125 * Fix the bug of memory leak when switching 5.1-channels to 2 channels.
126 * Add lock protection into dynamic changing format of data.
127 * Oct 18 2000 Ching-Ling Lee
128 * 5.1-channels support for ALi
129 * June 28 2000 Ching-Ling Lee
130 * S/PDIF out/in(playback/record) support for ALi 1535+, using /proc to be selected by user
131 * Simple Power Management support for ALi
132 * v0.14.5 May 23 2000 Ollie Lho
133 * Misc bug fix from the Net
134 * v0.14.4 May 20 2000 Aaron Holtzman
135 * Fix kfree'd memory access in release
136 * Fix race in open while looking for a free virtual channel slot
137 * remove open_wait wq (which appears to be unused)
138 * v0.14.3 May 10 2000 Ollie Lho
139 * fixed a small bug in trident_update_ptr, xmms 1.0.1 no longer uses 100% CPU
140 * v0.14.2 Mar 29 2000 Ching-Ling Lee
141 * Add clear to silence advance in trident_update_ptr
142 * fix invalid data of the end of the sound
143 * v0.14.1 Mar 24 2000 Ching-Ling Lee
144 * ALi 5451 support added, playback and recording O.K.
145 * ALi 5451 originally developed and structured based on sonicvibes, and
146 * suggested to merge into this file by Alan Cox.
147 * v0.14 Mar 15 2000 Ollie Lho
148 * 5.1 channel output support with channel binding. What's the Matrix ?
149 * v0.13.1 Mar 10 2000 Ollie Lho
150 * few minor bugs on dual codec support, needs more testing
151 * v0.13 Mar 03 2000 Ollie Lho
152 * new pci_* for 2.4 kernel, back ported to 2.2
153 * v0.12 Feb 23 2000 Ollie Lho
154 * Preliminary Recording support
155 * v0.11.2 Feb 19 2000 Ollie Lho
156 * removed incomplete full-dulplex support
157 * v0.11.1 Jan 28 2000 Ollie Lho
158 * small bug in setting sample rate for 4d-nx (reported by Aaron)
159 * v0.11 Jan 27 2000 Ollie Lho
160 * DMA bug, scheduler latency, second try
161 * v0.10 Jan 24 2000 Ollie Lho
162 * DMA bug fixed, found kernel scheduling problem
163 * v0.09 Jan 20 2000 Ollie Lho
164 * Clean up of channel register access routine (prepare for channel binding)
165 * v0.08 Jan 14 2000 Ollie Lho
166 * Isolation of AC97 codec code
167 * v0.07 Jan 13 2000 Ollie Lho
168 * Get rid of ugly old low level access routines (e.g. CHRegs.lp****)
169 * v0.06 Jan 11 2000 Ollie Lho
170 * Preliminary support for dual (more ?) AC97 codecs
171 * v0.05 Jan 08 2000 Luca Montecchiani <m.luca@iname.com>
172 * adapt to 2.3.x new __setup/__init call
173 * v0.04 Dec 31 1999 Ollie Lho
174 * Multiple Open, using Middle Loop Interrupt to smooth playback
175 * v0.03 Dec 24 1999 Ollie Lho
176 * mem leak in prog_dmabuf and dealloc_dmabuf removed
177 * v0.02 Dec 15 1999 Ollie Lho
178 * SiS 7018 support added, playback O.K.
179 * v0.01 Alan Cox et. al.
180 * Initial Release in kernel 2.3.30, does not work
181 *
182 * ToDo
183 * Clean up of low level channel register access code. (done)
184 * Fix the bug on dma buffer management in update_ptr, read/write, drain_dac (done)
185 * Dual AC97 codecs support (done)
186 * Recording support (done)
187 * Mmap support
188 * "Channel Binding" ioctl extension (done)
189 * new pci device driver interface for 2.4 kernel (done)
190 *
191 * Lock order (high->low)
192 * lock - hardware lock
193 * open_mutex - guard opens
194 * sem - guard dmabuf, write re-entry etc
195 */
196
197 #include <linux/module.h>
198 #include <linux/string.h>
199 #include <linux/ctype.h>
200 #include <linux/ioport.h>
201 #include <linux/sched.h>
202 #include <linux/delay.h>
203 #include <linux/sound.h>
204 #include <linux/slab.h>
205 #include <linux/soundcard.h>
206 #include <linux/pci.h>
207 #include <linux/init.h>
208 #include <linux/poll.h>
209 #include <linux/spinlock.h>
210 #include <linux/ac97_codec.h>
211 #include <linux/bitops.h>
212 #include <linux/proc_fs.h>
213 #include <linux/interrupt.h>
214 #include <linux/pm.h>
215 #include <linux/gameport.h>
216 #include <linux/kernel.h>
217 #include <linux/mutex.h>
218 #include <linux/mm.h>
219
220 #include <asm/uaccess.h>
221 #include <asm/io.h>
222 #include <asm/dma.h>
223
224 #if defined(CONFIG_ALPHA_NAUTILUS) || defined(CONFIG_ALPHA_GENERIC)
225 #include <asm/hwrpb.h>
226 #endif
227
228 #include "trident.h"
229
230 #define DRIVER_VERSION "0.14.10j-2.6"
231
232 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
233 #define SUPPORT_JOYSTICK 1
234 #endif
235
236 /* magic numbers to protect our data structures */
237 #define TRIDENT_CARD_MAGIC 0x5072696E /* "Prin" */
238 #define TRIDENT_STATE_MAGIC 0x63657373 /* "cess" */
239
240 #define TRIDENT_DMA_MASK 0x3fffffff /* DMA buffer mask for pci_alloc_consist */
241 #define ALI_DMA_MASK 0x7fffffff /* ALI Tridents have 31-bit DMA. Wow. */
242
243 #define NR_HW_CH 32
244
245 /* maximum number of AC97 codecs connected, AC97 2.0 defined 4, but 7018 and 4D-NX only
246 have 2 SDATA_IN lines (currently) */
247 #define NR_AC97 2
248
249 /* minor number of /dev/swmodem (temporary, experimental) */
250 #define SND_DEV_SWMODEM 7
251
252 static const unsigned ali_multi_channels_5_1[] = {
253 /*ALI_SURR_LEFT_CHANNEL, ALI_SURR_RIGHT_CHANNEL, */
254 ALI_CENTER_CHANNEL,
255 ALI_LEF_CHANNEL,
256 ALI_SURR_LEFT_CHANNEL,
257 ALI_SURR_RIGHT_CHANNEL
258 };
259
260 static const unsigned sample_size[] = { 1, 2, 2, 4 };
261 static const unsigned sample_shift[] = { 0, 1, 1, 2 };
262
263 static const char invalid_magic[] = KERN_CRIT "trident: invalid magic value in %s\n";
264
265 enum {
266 TRIDENT_4D_DX = 0,
267 TRIDENT_4D_NX,
268 SIS_7018,
269 ALI_5451,
270 CYBER5050
271 };
272
273 static char *card_names[] = {
274 "Trident 4DWave DX",
275 "Trident 4DWave NX",
276 "SiS 7018 PCI Audio",
277 "ALi Audio Accelerator",
278 "Tvia/IGST CyberPro 5050"
279 };
280
281 static struct pci_device_id trident_pci_tbl[] = {
282 {PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_TRIDENT_4DWAVE_DX),
283 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TRIDENT_4D_DX},
284 {PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_TRIDENT_4DWAVE_NX),
285 0, 0, TRIDENT_4D_NX},
286 {PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7018), 0, 0, SIS_7018},
287 {PCI_DEVICE(PCI_VENDOR_ID_ALI, PCI_DEVICE_ID_ALI_5451), 0, 0, ALI_5451},
288 {PCI_DEVICE(PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_5050),
289 0, 0, CYBER5050},
290 {0,}
291 };
292
293 MODULE_DEVICE_TABLE(pci, trident_pci_tbl);
294
295 /* "software" or virtual channel, an instance of opened /dev/dsp */
296 struct trident_state {
297 unsigned int magic;
298 struct trident_card *card; /* Card info */
299
300 /* file mode */
301 mode_t open_mode;
302
303 /* virtual channel number */
304 int virt;
305
306 struct dmabuf {
307 /* wave sample stuff */
308 unsigned int rate;
309 unsigned char fmt, enable;
310
311 /* hardware channel */
312 struct trident_channel *channel;
313
314 /* OSS buffer management stuff */
315 void *rawbuf;
316 dma_addr_t dma_handle;
317 unsigned buforder;
318 unsigned numfrag;
319 unsigned fragshift;
320
321 /* our buffer acts like a circular ring */
322 unsigned hwptr; /* where dma last started, updated by update_ptr */
323 unsigned swptr; /* where driver last clear/filled, updated by read/write */
324 int count; /* bytes to be comsumed or been generated by dma machine */
325 unsigned total_bytes; /* total bytes dmaed by hardware */
326
327 unsigned error; /* number of over/underruns */
328 /* put process on wait queue when no more space in buffer */
329 wait_queue_head_t wait;
330
331 /* redundant, but makes calculations easier */
332 unsigned fragsize;
333 unsigned dmasize;
334 unsigned fragsamples;
335
336 /* OSS stuff */
337 unsigned mapped:1;
338 unsigned ready:1;
339 unsigned endcleared:1;
340 unsigned update_flag;
341 unsigned ossfragshift;
342 int ossmaxfrags;
343 unsigned subdivision;
344
345 } dmabuf;
346
347 /* 5.1 channels */
348 struct trident_state *other_states[4];
349 int multi_channels_adjust_count;
350 unsigned chans_num;
351 unsigned long fmt_flag;
352 /* Guard against mmap/write/read races */
353 struct mutex sem;
354
355 };
356
357 /* hardware channels */
358 struct trident_channel {
359 int num; /* channel number */
360 u32 lba; /* Loop Begine Address, where dma buffer starts */
361 u32 eso; /* End Sample Offset, wehre dma buffer ends */
362 /* (in the unit of samples) */
363 u32 delta; /* delta value, sample rate / 48k for playback, */
364 /* 48k/sample rate for recording */
365 u16 attribute; /* control where PCM data go and come */
366 u16 fm_vol;
367 u32 control; /* signed/unsigned, 8/16 bits, mono/stereo */
368 };
369
370 struct trident_pcm_bank_address {
371 u32 start;
372 u32 stop;
373 u32 aint;
374 u32 aint_en;
375 };
376
377 static struct trident_pcm_bank_address bank_a_addrs = {
378 T4D_START_A,
379 T4D_STOP_A,
380 T4D_AINT_A,
381 T4D_AINTEN_A
382 };
383
384 static struct trident_pcm_bank_address bank_b_addrs = {
385 T4D_START_B,
386 T4D_STOP_B,
387 T4D_AINT_B,
388 T4D_AINTEN_B
389 };
390
391 struct trident_pcm_bank {
392 /* register addresses to control bank operations */
393 struct trident_pcm_bank_address *addresses;
394 /* each bank has 32 channels */
395 u32 bitmap; /* channel allocation bitmap */
396 struct trident_channel channels[32];
397 };
398
399 struct trident_card {
400 unsigned int magic;
401
402 /* We keep trident cards in a linked list */
403 struct trident_card *next;
404
405 /* single open lock mechanism, only used for recording */
406 struct mutex open_mutex;
407
408 /* The trident has a certain amount of cross channel interaction
409 so we use a single per card lock */
410 spinlock_t lock;
411
412 /* PCI device stuff */
413 struct pci_dev *pci_dev;
414 u16 pci_id;
415 u8 revision;
416
417 /* soundcore stuff */
418 int dev_audio;
419
420 /* structures for abstraction of hardware facilities, codecs, */
421 /* banks and channels */
422 struct ac97_codec *ac97_codec[NR_AC97];
423 struct trident_pcm_bank banks[NR_BANKS];
424 struct trident_state *states[NR_HW_CH];
425
426 /* hardware resources */
427 unsigned long iobase;
428 u32 irq;
429
430 /* Function support */
431 struct trident_channel *(*alloc_pcm_channel) (struct trident_card *);
432 struct trident_channel *(*alloc_rec_pcm_channel) (struct trident_card *);
433 void (*free_pcm_channel) (struct trident_card *, unsigned int chan);
434 void (*address_interrupt) (struct trident_card *);
435
436 /* Added by Matt Wu 01-05-2001 for spdif in */
437 int multi_channel_use_count;
438 int rec_channel_use_count;
439 u16 mixer_regs[64][NR_AC97]; /* Made card local by Alan */
440 int mixer_regs_ready;
441
442 /* Added for hardware volume control */
443 int hwvolctl;
444 struct timer_list timer;
445
446 /* Game port support */
447 struct gameport *gameport;
448 };
449
450 enum dmabuf_mode {
451 DM_PLAYBACK = 0,
452 DM_RECORD
453 };
454
455 /* table to map from CHANNELMASK to channel attribute for SiS 7018 */
456 static u16 mask2attr[] = {
457 PCM_LR, PCM_LR, SURR_LR, CENTER_LFE,
458 HSET, MIC, MODEM_LINE1, MODEM_LINE2,
459 I2S_LR, SPDIF_LR
460 };
461
462 /* table to map from channel attribute to CHANNELMASK for SiS 7018 */
463 static int attr2mask[] = {
464 DSP_BIND_MODEM1, DSP_BIND_MODEM2, DSP_BIND_FRONT, DSP_BIND_HANDSET,
465 DSP_BIND_I2S, DSP_BIND_CENTER_LFE, DSP_BIND_SURR, DSP_BIND_SPDIF
466 };
467
468 /* Added by Matt Wu 01-05-2001 for spdif in */
469 static int ali_close_multi_channels(void);
470 static void ali_delay(struct trident_card *card, int interval);
471 static void ali_detect_spdif_rate(struct trident_card *card);
472
473 static void ali_ac97_write(struct ac97_codec *codec, u8 reg, u16 val);
474 static u16 ali_ac97_read(struct ac97_codec *codec, u8 reg);
475
476 static struct trident_card *devs;
477
478 static void trident_ac97_set(struct ac97_codec *codec, u8 reg, u16 val);
479 static u16 trident_ac97_get(struct ac97_codec *codec, u8 reg);
480
481 static int trident_open_mixdev(struct inode *inode, struct file *file);
482 static int trident_ioctl_mixdev(struct inode *inode, struct file *file,
483 unsigned int cmd, unsigned long arg);
484
485 static void ali_ac97_set(struct trident_card *card, int secondary, u8 reg, u16 val);
486 static u16 ali_ac97_get(struct trident_card *card, int secondary, u8 reg);
487 static void ali_set_spdif_out_rate(struct trident_card *card, unsigned int rate);
488 static void ali_enable_special_channel(struct trident_state *stat);
489 static struct trident_channel *ali_alloc_rec_pcm_channel(struct trident_card *card);
490 static struct trident_channel *ali_alloc_pcm_channel(struct trident_card *card);
491 static void ali_free_pcm_channel(struct trident_card *card, unsigned int channel);
492 static int ali_setup_multi_channels(struct trident_card *card, int chan_nums);
493 static unsigned int ali_get_spdif_in_rate(struct trident_card *card);
494 static void ali_setup_spdif_in(struct trident_card *card);
495 static void ali_disable_spdif_in(struct trident_card *card);
496 static void ali_disable_special_channel(struct trident_card *card, int ch);
497 static void ali_setup_spdif_out(struct trident_card *card, int flag);
498 static int ali_write_5_1(struct trident_state *state,
499 const char __user *buffer,
500 int cnt_for_multi_channel, unsigned int *copy_count,
501 unsigned int *state_cnt);
502 static int ali_allocate_other_states_resources(struct trident_state *state,
503 int chan_nums);
504 static void ali_free_other_states_resources(struct trident_state *state);
505
506 #define seek_offset(dma_ptr, buffer, cnt, offset, copy_count) do { \
507 (dma_ptr) += (offset); \
508 (buffer) += (offset); \
509 (cnt) -= (offset); \
510 (copy_count) += (offset); \
511 } while (0)
512
513 static inline int lock_set_fmt(struct trident_state* state)
514 {
515 if (test_and_set_bit(0, &state->fmt_flag))
516 return -EFAULT;
517
518 return 0;
519 }
520
521 static inline void unlock_set_fmt(struct trident_state* state)
522 {
523 clear_bit(0, &state->fmt_flag);
524 }
525
526 static int
527 trident_enable_loop_interrupts(struct trident_card *card)
528 {
529 u32 global_control;
530
531 global_control = inl(TRID_REG(card, T4D_LFO_GC_CIR));
532
533 switch (card->pci_id) {
534 case PCI_DEVICE_ID_SI_7018:
535 global_control |= (ENDLP_IE | MIDLP_IE | BANK_B_EN);
536 break;
537 case PCI_DEVICE_ID_ALI_5451:
538 case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
539 case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
540 case PCI_DEVICE_ID_INTERG_5050:
541 global_control |= (ENDLP_IE | MIDLP_IE);
542 break;
543 default:
544 return 0;
545 }
546
547 outl(global_control, TRID_REG(card, T4D_LFO_GC_CIR));
548
549 pr_debug("trident: Enable Loop Interrupts, globctl = 0x%08X\n",
550 inl(TRID_REG(card, T4D_LFO_GC_CIR)));
551
552 return 1;
553 }
554
555 static int
556 trident_disable_loop_interrupts(struct trident_card *card)
557 {
558 u32 global_control;
559
560 global_control = inl(TRID_REG(card, T4D_LFO_GC_CIR));
561 global_control &= ~(ENDLP_IE | MIDLP_IE);
562 outl(global_control, TRID_REG(card, T4D_LFO_GC_CIR));
563
564 pr_debug("trident: Disabled Loop Interrupts, globctl = 0x%08X\n",
565 global_control);
566
567 return 1;
568 }
569
570 static void
571 trident_enable_voice_irq(struct trident_card *card, unsigned int channel)
572 {
573 unsigned int mask = 1 << (channel & 0x1f);
574 struct trident_pcm_bank *bank = &card->banks[channel >> 5];
575 u32 reg, addr = bank->addresses->aint_en;
576
577 reg = inl(TRID_REG(card, addr));
578 reg |= mask;
579 outl(reg, TRID_REG(card, addr));
580
581 #ifdef DEBUG
582 reg = inl(TRID_REG(card, addr));
583 pr_debug("trident: enabled IRQ on channel %d, %s = 0x%08x(addr:%X)\n",
584 channel, addr == T4D_AINTEN_B ? "AINTEN_B" : "AINTEN_A",
585 reg, addr);
586 #endif /* DEBUG */
587 }
588
589 static void
590 trident_disable_voice_irq(struct trident_card *card, unsigned int channel)
591 {
592 unsigned int mask = 1 << (channel & 0x1f);
593 struct trident_pcm_bank *bank = &card->banks[channel >> 5];
594 u32 reg, addr = bank->addresses->aint_en;
595
596 reg = inl(TRID_REG(card, addr));
597 reg &= ~mask;
598 outl(reg, TRID_REG(card, addr));
599
600 /* Ack the channel in case the interrupt was set before we disable it. */
601 outl(mask, TRID_REG(card, bank->addresses->aint));
602
603 #ifdef DEBUG
604 reg = inl(TRID_REG(card, addr));
605 pr_debug("trident: disabled IRQ on channel %d, %s = 0x%08x(addr:%X)\n",
606 channel, addr == T4D_AINTEN_B ? "AINTEN_B" : "AINTEN_A",
607 reg, addr);
608 #endif /* DEBUG */
609 }
610
611 static void
612 trident_start_voice(struct trident_card *card, unsigned int channel)
613 {
614 unsigned int mask = 1 << (channel & 0x1f);
615 struct trident_pcm_bank *bank = &card->banks[channel >> 5];
616 u32 addr = bank->addresses->start;
617
618 #ifdef DEBUG
619 u32 reg;
620 #endif /* DEBUG */
621
622 outl(mask, TRID_REG(card, addr));
623
624 #ifdef DEBUG
625 reg = inl(TRID_REG(card, addr));
626 pr_debug("trident: start voice on channel %d, %s = 0x%08x(addr:%X)\n",
627 channel, addr == T4D_START_B ? "START_B" : "START_A",
628 reg, addr);
629 #endif /* DEBUG */
630 }
631
632 static void
633 trident_stop_voice(struct trident_card *card, unsigned int channel)
634 {
635 unsigned int mask = 1 << (channel & 0x1f);
636 struct trident_pcm_bank *bank = &card->banks[channel >> 5];
637 u32 addr = bank->addresses->stop;
638
639 #ifdef DEBUG
640 u32 reg;
641 #endif /* DEBUG */
642
643 outl(mask, TRID_REG(card, addr));
644
645 #ifdef DEBUG
646 reg = inl(TRID_REG(card, addr));
647 pr_debug("trident: stop voice on channel %d, %s = 0x%08x(addr:%X)\n",
648 channel, addr == T4D_STOP_B ? "STOP_B" : "STOP_A",
649 reg, addr);
650 #endif /* DEBUG */
651 }
652
653 static u32
654 trident_get_interrupt_mask(struct trident_card *card, unsigned int channel)
655 {
656 struct trident_pcm_bank *bank = &card->banks[channel];
657 u32 addr = bank->addresses->aint;
658 return inl(TRID_REG(card, addr));
659 }
660
661 static int
662 trident_check_channel_interrupt(struct trident_card *card, unsigned int channel)
663 {
664 unsigned int mask = 1 << (channel & 0x1f);
665 u32 reg = trident_get_interrupt_mask(card, channel >> 5);
666
667 #ifdef DEBUG
668 if (reg & mask)
669 pr_debug("trident: channel %d has interrupt, %s = 0x%08x\n",
670 channel, reg == T4D_AINT_B ? "AINT_B" : "AINT_A",
671 reg);
672 #endif /* DEBUG */
673 return (reg & mask) ? 1 : 0;
674 }
675
676 static void
677 trident_ack_channel_interrupt(struct trident_card *card, unsigned int channel)
678 {
679 unsigned int mask = 1 << (channel & 0x1f);
680 struct trident_pcm_bank *bank = &card->banks[channel >> 5];
681 u32 reg, addr = bank->addresses->aint;
682
683 reg = inl(TRID_REG(card, addr));
684 reg &= mask;
685 outl(reg, TRID_REG(card, addr));
686
687 #ifdef DEBUG
688 reg = inl(TRID_REG(card, T4D_AINT_B));
689 pr_debug("trident: Ack channel %d interrupt, AINT_B = 0x%08x\n",
690 channel, reg);
691 #endif /* DEBUG */
692 }
693
694 static struct trident_channel *
695 trident_alloc_pcm_channel(struct trident_card *card)
696 {
697 struct trident_pcm_bank *bank;
698 int idx;
699
700 bank = &card->banks[BANK_B];
701
702 for (idx = 31; idx >= 0; idx--) {
703 if (!(bank->bitmap & (1 << idx))) {
704 struct trident_channel *channel = &bank->channels[idx];
705 bank->bitmap |= 1 << idx;
706 channel->num = idx + 32;
707 return channel;
708 }
709 }
710
711 /* no more free channels available */
712 printk(KERN_ERR "trident: no more channels available on Bank B.\n");
713 return NULL;
714 }
715
716 static void
717 trident_free_pcm_channel(struct trident_card *card, unsigned int channel)
718 {
719 int bank;
720 unsigned char b;
721
722 if (channel < 31 || channel > 63)
723 return;
724
725 if (card->pci_id == PCI_DEVICE_ID_TRIDENT_4DWAVE_DX ||
726 card->pci_id == PCI_DEVICE_ID_TRIDENT_4DWAVE_NX) {
727 b = inb(TRID_REG(card, T4D_REC_CH));
728 if ((b & ~0x80) == channel)
729 outb(0x0, TRID_REG(card, T4D_REC_CH));
730 }
731
732 bank = channel >> 5;
733 channel = channel & 0x1f;
734
735 card->banks[bank].bitmap &= ~(1 << (channel));
736 }
737
738 static struct trident_channel *
739 cyber_alloc_pcm_channel(struct trident_card *card)
740 {
741 struct trident_pcm_bank *bank;
742 int idx;
743
744 /* The cyberpro 5050 has only 32 voices and one bank */
745 /* .. at least they are not documented (if you want to call that
746 * crap documentation), perhaps broken ? */
747
748 bank = &card->banks[BANK_A];
749
750 for (idx = 31; idx >= 0; idx--) {
751 if (!(bank->bitmap & (1 << idx))) {
752 struct trident_channel *channel = &bank->channels[idx];
753 bank->bitmap |= 1 << idx;
754 channel->num = idx;
755 return channel;
756 }
757 }
758
759 /* no more free channels available */
760 printk(KERN_ERR "cyberpro5050: no more channels available on Bank A.\n");
761 return NULL;
762 }
763
764 static void
765 cyber_free_pcm_channel(struct trident_card *card, unsigned int channel)
766 {
767 if (channel > 31)
768 return;
769 card->banks[BANK_A].bitmap &= ~(1 << (channel));
770 }
771
772 static inline void
773 cyber_outidx(int port, int idx, int data)
774 {
775 outb(idx, port);
776 outb(data, port + 1);
777 }
778
779 static inline int
780 cyber_inidx(int port, int idx)
781 {
782 outb(idx, port);
783 return inb(port + 1);
784 }
785
786 static int
787 cyber_init_ritual(struct trident_card *card)
788 {
789 /* some black magic, taken from SDK samples */
790 /* remove this and nothing will work */
791 int portDat;
792 int ret = 0;
793 unsigned long flags;
794
795 /*
796 * Keep interrupts off for the configure - we don't want to
797 * clash with another cyberpro config event
798 */
799
800 spin_lock_irqsave(&card->lock, flags);
801 portDat = cyber_inidx(CYBER_PORT_AUDIO, CYBER_IDX_AUDIO_ENABLE);
802 /* enable, if it was disabled */
803 if ((portDat & CYBER_BMSK_AUENZ) != CYBER_BMSK_AUENZ_ENABLE) {
804 printk(KERN_INFO "cyberpro5050: enabling audio controller\n");
805 cyber_outidx(CYBER_PORT_AUDIO, CYBER_IDX_AUDIO_ENABLE,
806 portDat | CYBER_BMSK_AUENZ_ENABLE);
807 /* check again if hardware is enabled now */
808 portDat = cyber_inidx(CYBER_PORT_AUDIO, CYBER_IDX_AUDIO_ENABLE);
809 }
810 if ((portDat & CYBER_BMSK_AUENZ) != CYBER_BMSK_AUENZ_ENABLE) {
811 printk(KERN_ERR "cyberpro5050: initAudioAccess: no success\n");
812 ret = -1;
813 } else {
814 cyber_outidx(CYBER_PORT_AUDIO, CYBER_IDX_IRQ_ENABLE,
815 CYBER_BMSK_AUDIO_INT_ENABLE);
816 cyber_outidx(CYBER_PORT_AUDIO, 0xbf, 0x01);
817 cyber_outidx(CYBER_PORT_AUDIO, 0xba, 0x20);
818 cyber_outidx(CYBER_PORT_AUDIO, 0xbb, 0x08);
819 cyber_outidx(CYBER_PORT_AUDIO, 0xbf, 0x02);
820 cyber_outidx(CYBER_PORT_AUDIO, 0xb3, 0x06);
821 cyber_outidx(CYBER_PORT_AUDIO, 0xbf, 0x00);
822 }
823 spin_unlock_irqrestore(&card->lock, flags);
824 return ret;
825 }
826
827 /* called with spin lock held */
828
829 static int
830 trident_load_channel_registers(struct trident_card *card, u32 * data,
831 unsigned int channel)
832 {
833 int i;
834
835 if (channel > 63)
836 return 0;
837
838 /* select hardware channel to write */
839 outb(channel, TRID_REG(card, T4D_LFO_GC_CIR));
840
841 /* Output the channel registers, but don't write register
842 three to an ALI chip. */
843 for (i = 0; i < CHANNEL_REGS; i++) {
844 if (i == 3 && card->pci_id == PCI_DEVICE_ID_ALI_5451)
845 continue;
846 outl(data[i], TRID_REG(card, CHANNEL_START + 4 * i));
847 }
848 if (card->pci_id == PCI_DEVICE_ID_ALI_5451 ||
849 card->pci_id == PCI_DEVICE_ID_INTERG_5050) {
850 outl(ALI_EMOD_Still, TRID_REG(card, ALI_EBUF1));
851 outl(ALI_EMOD_Still, TRID_REG(card, ALI_EBUF2));
852 }
853 return 1;
854 }
855
856 /* called with spin lock held */
857 static int
858 trident_write_voice_regs(struct trident_state *state)
859 {
860 unsigned int data[CHANNEL_REGS + 1];
861 struct trident_channel *channel;
862
863 channel = state->dmabuf.channel;
864
865 data[1] = channel->lba;
866 data[4] = channel->control;
867
868 switch (state->card->pci_id) {
869 case PCI_DEVICE_ID_ALI_5451:
870 data[0] = 0; /* Current Sample Offset */
871 data[2] = (channel->eso << 16) | (channel->delta & 0xffff);
872 data[3] = 0;
873 break;
874 case PCI_DEVICE_ID_SI_7018:
875 case PCI_DEVICE_ID_INTERG_5050:
876 data[0] = 0; /* Current Sample Offset */
877 data[2] = (channel->eso << 16) | (channel->delta & 0xffff);
878 data[3] = (channel->attribute << 16) | (channel->fm_vol & 0xffff);
879 break;
880 case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
881 data[0] = 0; /* Current Sample Offset */
882 data[2] = (channel->eso << 16) | (channel->delta & 0xffff);
883 data[3] = channel->fm_vol & 0xffff;
884 break;
885 case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
886 data[0] = (channel->delta << 24);
887 data[2] = ((channel->delta << 16) & 0xff000000) |
888 (channel->eso & 0x00ffffff);
889 data[3] = channel->fm_vol & 0xffff;
890 break;
891 default:
892 return 0;
893 }
894
895 return trident_load_channel_registers(state->card, data, channel->num);
896 }
897
898 static int
899 compute_rate_play(u32 rate)
900 {
901 int delta;
902 /* We special case 44100 and 8000 since rounding with the equation
903 does not give us an accurate enough value. For 11025 and 22050
904 the equation gives us the best answer. All other frequencies will
905 also use the equation. JDW */
906 if (rate == 44100)
907 delta = 0xeb3;
908 else if (rate == 8000)
909 delta = 0x2ab;
910 else if (rate == 48000)
911 delta = 0x1000;
912 else
913 delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
914 return delta;
915 }
916
917 static int
918 compute_rate_rec(u32 rate)
919 {
920 int delta;
921
922 if (rate == 44100)
923 delta = 0x116a;
924 else if (rate == 8000)
925 delta = 0x6000;
926 else if (rate == 48000)
927 delta = 0x1000;
928 else
929 delta = ((48000 << 12) / rate) & 0x0000ffff;
930
931 return delta;
932 }
933
934 /* set playback sample rate */
935 static unsigned int
936 trident_set_dac_rate(struct trident_state *state, unsigned int rate)
937 {
938 struct dmabuf *dmabuf = &state->dmabuf;
939
940 if (rate > 48000)
941 rate = 48000;
942 if (rate < 4000)
943 rate = 4000;
944
945 dmabuf->rate = rate;
946 dmabuf->channel->delta = compute_rate_play(rate);
947
948 trident_write_voice_regs(state);
949
950 pr_debug("trident: called trident_set_dac_rate : rate = %d\n", rate);
951
952 return rate;
953 }
954
955 /* set recording sample rate */
956 static unsigned int
957 trident_set_adc_rate(struct trident_state *state, unsigned int rate)
958 {
959 struct dmabuf *dmabuf = &state->dmabuf;
960
961 if (rate > 48000)
962 rate = 48000;
963 if (rate < 4000)
964 rate = 4000;
965
966 dmabuf->rate = rate;
967 dmabuf->channel->delta = compute_rate_rec(rate);
968
969 trident_write_voice_regs(state);
970
971 pr_debug("trident: called trident_set_adc_rate : rate = %d\n", rate);
972
973 return rate;
974 }
975
976 /* prepare channel attributes for playback */
977 static void
978 trident_play_setup(struct trident_state *state)
979 {
980 struct dmabuf *dmabuf = &state->dmabuf;
981 struct trident_channel *channel = dmabuf->channel;
982
983 channel->lba = dmabuf->dma_handle;
984 channel->delta = compute_rate_play(dmabuf->rate);
985
986 channel->eso = dmabuf->dmasize >> sample_shift[dmabuf->fmt];
987 channel->eso -= 1;
988
989 if (state->card->pci_id != PCI_DEVICE_ID_SI_7018) {
990 channel->attribute = 0;
991 if (state->card->pci_id == PCI_DEVICE_ID_ALI_5451) {
992 if ((channel->num == ALI_SPDIF_IN_CHANNEL) ||
993 (channel->num == ALI_PCM_IN_CHANNEL))
994 ali_disable_special_channel(state->card, channel->num);
995 else if ((inl(TRID_REG(state->card, ALI_GLOBAL_CONTROL))
996 & ALI_SPDIF_OUT_CH_ENABLE)
997 && (channel->num == ALI_SPDIF_OUT_CHANNEL)) {
998 ali_set_spdif_out_rate(state->card,
999 state->dmabuf.rate);
1000 state->dmabuf.channel->delta = 0x1000;
1001 }
1002 }
1003 }
1004
1005 channel->fm_vol = 0x0;
1006
1007 channel->control = CHANNEL_LOOP;
1008 if (dmabuf->fmt & TRIDENT_FMT_16BIT) {
1009 /* 16-bits */
1010 channel->control |= CHANNEL_16BITS;
1011 /* signed */
1012 channel->control |= CHANNEL_SIGNED;
1013 }
1014 if (dmabuf->fmt & TRIDENT_FMT_STEREO)
1015 /* stereo */
1016 channel->control |= CHANNEL_STEREO;
1017
1018 pr_debug("trident: trident_play_setup, LBA = 0x%08x, Delta = 0x%08x, "
1019 "ESO = 0x%08x, Control = 0x%08x\n", channel->lba,
1020 channel->delta, channel->eso, channel->control);
1021
1022 trident_write_voice_regs(state);
1023 }
1024
1025 /* prepare channel attributes for recording */
1026 static void
1027 trident_rec_setup(struct trident_state *state)
1028 {
1029 u16 w;
1030 u8 bval;
1031
1032 struct trident_card *card = state->card;
1033 struct dmabuf *dmabuf = &state->dmabuf;
1034 struct trident_channel *channel = dmabuf->channel;
1035 unsigned int rate;
1036
1037 /* Enable AC-97 ADC (capture) */
1038 switch (card->pci_id) {
1039 case PCI_DEVICE_ID_ALI_5451:
1040 ali_enable_special_channel(state);
1041 break;
1042 case PCI_DEVICE_ID_SI_7018:
1043 /* for 7018, the ac97 is always in playback/record (duplex) mode */
1044 break;
1045 case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
1046 w = inb(TRID_REG(card, DX_ACR2_AC97_COM_STAT));
1047 outb(w | 0x48, TRID_REG(card, DX_ACR2_AC97_COM_STAT));
1048 /* enable and set record channel */
1049 outb(0x80 | channel->num, TRID_REG(card, T4D_REC_CH));
1050 break;
1051 case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
1052 w = inw(TRID_REG(card, T4D_MISCINT));
1053 outw(w | 0x1000, TRID_REG(card, T4D_MISCINT));
1054 /* enable and set record channel */
1055 outb(0x80 | channel->num, TRID_REG(card, T4D_REC_CH));
1056 break;
1057 case PCI_DEVICE_ID_INTERG_5050:
1058 /* don't know yet, using special channel 22 in GC1(0xd4)? */
1059 break;
1060 default:
1061 return;
1062 }
1063
1064 channel->lba = dmabuf->dma_handle;
1065 channel->delta = compute_rate_rec(dmabuf->rate);
1066 if ((card->pci_id == PCI_DEVICE_ID_ALI_5451) &&
1067 (channel->num == ALI_SPDIF_IN_CHANNEL)) {
1068 rate = ali_get_spdif_in_rate(card);
1069 if (rate == 0) {
1070 printk(KERN_WARNING "trident: ALi 5451 "
1071 "S/PDIF input setup error!\n");
1072 rate = 48000;
1073 }
1074 bval = inb(TRID_REG(card, ALI_SPDIF_CTRL));
1075 if (bval & 0x10) {
1076 outb(bval, TRID_REG(card, ALI_SPDIF_CTRL));
1077 printk(KERN_WARNING "trident: cleared ALi "
1078 "5451 S/PDIF parity error flag.\n");
1079 }
1080
1081 if (rate != 48000)
1082 channel->delta = ((rate << 12) / dmabuf->rate) & 0x0000ffff;
1083 }
1084
1085 channel->eso = dmabuf->dmasize >> sample_shift[dmabuf->fmt];
1086 channel->eso -= 1;
1087
1088 if (state->card->pci_id != PCI_DEVICE_ID_SI_7018) {
1089 channel->attribute = 0;
1090 }
1091
1092 channel->fm_vol = 0x0;
1093
1094 channel->control = CHANNEL_LOOP;
1095 if (dmabuf->fmt & TRIDENT_FMT_16BIT) {
1096 /* 16-bits */
1097 channel->control |= CHANNEL_16BITS;
1098 /* signed */
1099 channel->control |= CHANNEL_SIGNED;
1100 }
1101 if (dmabuf->fmt & TRIDENT_FMT_STEREO)
1102 /* stereo */
1103 channel->control |= CHANNEL_STEREO;
1104
1105 pr_debug("trident: trident_rec_setup, LBA = 0x%08x, Delat = 0x%08x, "
1106 "ESO = 0x%08x, Control = 0x%08x\n", channel->lba,
1107 channel->delta, channel->eso, channel->control);
1108
1109 trident_write_voice_regs(state);
1110 }
1111
1112 /* get current playback/recording dma buffer pointer (byte offset from LBA),
1113 called with spinlock held! */
1114 static inline unsigned
1115 trident_get_dma_addr(struct trident_state *state)
1116 {
1117 struct dmabuf *dmabuf = &state->dmabuf;
1118 u32 cso;
1119
1120 if (!dmabuf->enable)
1121 return 0;
1122
1123 outb(dmabuf->channel->num, TRID_REG(state->card, T4D_LFO_GC_CIR));
1124
1125 switch (state->card->pci_id) {
1126 case PCI_DEVICE_ID_ALI_5451:
1127 case PCI_DEVICE_ID_SI_7018:
1128 case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
1129 case PCI_DEVICE_ID_INTERG_5050:
1130 /* 16 bits ESO, CSO for 7018 and DX */
1131 cso = inw(TRID_REG(state->card, CH_DX_CSO_ALPHA_FMS + 2));
1132 break;
1133 case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
1134 /* 24 bits ESO, CSO for NX */
1135 cso = inl(TRID_REG(state->card, CH_NX_DELTA_CSO)) & 0x00ffffff;
1136 break;
1137 default:
1138 return 0;
1139 }
1140
1141 pr_debug("trident: trident_get_dma_addr: chip reported channel: %d, "
1142 "cso = 0x%04x\n", dmabuf->channel->num, cso);
1143
1144 /* ESO and CSO are in units of Samples, convert to byte offset */
1145 cso <<= sample_shift[dmabuf->fmt];
1146
1147 return (cso % dmabuf->dmasize);
1148 }
1149
1150 /* Stop recording (lock held) */
1151 static inline void
1152 __stop_adc(struct trident_state *state)
1153 {
1154 struct dmabuf *dmabuf = &state->dmabuf;
1155 unsigned int chan_num = dmabuf->channel->num;
1156 struct trident_card *card = state->card;
1157
1158 dmabuf->enable &= ~ADC_RUNNING;
1159 trident_stop_voice(card, chan_num);
1160 trident_disable_voice_irq(card, chan_num);
1161 }
1162
1163 static void
1164 stop_adc(struct trident_state *state)
1165 {
1166 struct trident_card *card = state->card;
1167 unsigned long flags;
1168
1169 spin_lock_irqsave(&card->lock, flags);
1170 __stop_adc(state);
1171 spin_unlock_irqrestore(&card->lock, flags);
1172 }
1173
1174 static void
1175 start_adc(struct trident_state *state)
1176 {
1177 struct dmabuf *dmabuf = &state->dmabuf;
1178 unsigned int chan_num = dmabuf->channel->num;
1179 struct trident_card *card = state->card;
1180 unsigned long flags;
1181
1182 spin_lock_irqsave(&card->lock, flags);
1183 if ((dmabuf->mapped ||
1184 dmabuf->count < (signed) dmabuf->dmasize) &&
1185 dmabuf->ready) {
1186 dmabuf->enable |= ADC_RUNNING;
1187 trident_enable_voice_irq(card, chan_num);
1188 trident_start_voice(card, chan_num);
1189 }
1190 spin_unlock_irqrestore(&card->lock, flags);
1191 }
1192
1193 /* stop playback (lock held) */
1194 static inline void
1195 __stop_dac(struct trident_state *state)
1196 {
1197 struct dmabuf *dmabuf = &state->dmabuf;
1198 unsigned int chan_num = dmabuf->channel->num;
1199 struct trident_card *card = state->card;
1200
1201 dmabuf->enable &= ~DAC_RUNNING;
1202 trident_stop_voice(card, chan_num);
1203 if (state->chans_num == 6) {
1204 trident_stop_voice(card, state->other_states[0]->
1205 dmabuf.channel->num);
1206 trident_stop_voice(card, state->other_states[1]->
1207 dmabuf.channel->num);
1208 trident_stop_voice(card, state->other_states[2]->
1209 dmabuf.channel->num);
1210 trident_stop_voice(card, state->other_states[3]->
1211 dmabuf.channel->num);
1212 }
1213 trident_disable_voice_irq(card, chan_num);
1214 }
1215
1216 static void
1217 stop_dac(struct trident_state *state)
1218 {
1219 struct trident_card *card = state->card;
1220 unsigned long flags;
1221
1222 spin_lock_irqsave(&card->lock, flags);
1223 __stop_dac(state);
1224 spin_unlock_irqrestore(&card->lock, flags);
1225 }
1226
1227 static void
1228 start_dac(struct trident_state *state)
1229 {
1230 struct dmabuf *dmabuf = &state->dmabuf;
1231 unsigned int chan_num = dmabuf->channel->num;
1232 struct trident_card *card = state->card;
1233 unsigned long flags;
1234
1235 spin_lock_irqsave(&card->lock, flags);
1236 if ((dmabuf->mapped || dmabuf->count > 0) && dmabuf->ready) {
1237 dmabuf->enable |= DAC_RUNNING;
1238 trident_enable_voice_irq(card, chan_num);
1239 trident_start_voice(card, chan_num);
1240 if (state->chans_num == 6) {
1241 trident_start_voice(card, state->other_states[0]->
1242 dmabuf.channel->num);
1243 trident_start_voice(card, state->other_states[1]->
1244 dmabuf.channel->num);
1245 trident_start_voice(card, state->other_states[2]->
1246 dmabuf.channel->num);
1247 trident_start_voice(card, state->other_states[3]->
1248 dmabuf.channel->num);
1249 }
1250 }
1251 spin_unlock_irqrestore(&card->lock, flags);
1252 }
1253
1254 #define DMABUF_DEFAULTORDER (15-PAGE_SHIFT)
1255 #define DMABUF_MINORDER 1
1256
1257 /* alloc a DMA buffer of with a buffer of this order */
1258 static int
1259 alloc_dmabuf(struct dmabuf *dmabuf, struct pci_dev *pci_dev, int order)
1260 {
1261 void *rawbuf = NULL;
1262 struct page *page, *pend;
1263
1264 if (!(rawbuf = pci_alloc_consistent(pci_dev, PAGE_SIZE << order,
1265 &dmabuf->dma_handle)))
1266 return -ENOMEM;
1267
1268 pr_debug("trident: allocated %ld (order = %d) bytes at %p\n",
1269 PAGE_SIZE << order, order, rawbuf);
1270
1271 dmabuf->ready = dmabuf->mapped = 0;
1272 dmabuf->rawbuf = rawbuf;
1273 dmabuf->buforder = order;
1274
1275 /* now mark the pages as reserved; otherwise */
1276 /* remap_pfn_range doesn't do what we want */
1277 pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1);
1278 for (page = virt_to_page(rawbuf); page <= pend; page++)
1279 SetPageReserved(page);
1280
1281 return 0;
1282 }
1283
1284 /* allocate the main DMA buffer, playback and recording buffer should be */
1285 /* allocated separately */
1286 static int
1287 alloc_main_dmabuf(struct trident_state *state)
1288 {
1289 struct dmabuf *dmabuf = &state->dmabuf;
1290 int order;
1291 int ret = -ENOMEM;
1292
1293 /* alloc as big a chunk as we can, FIXME: is this necessary ?? */
1294 for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) {
1295 if (!(ret = alloc_dmabuf(dmabuf, state->card->pci_dev, order)))
1296 return 0;
1297 /* else try again */
1298 }
1299 return ret;
1300 }
1301
1302 /* deallocate a DMA buffer */
1303 static void
1304 dealloc_dmabuf(struct dmabuf *dmabuf, struct pci_dev *pci_dev)
1305 {
1306 struct page *page, *pend;
1307
1308 if (dmabuf->rawbuf) {
1309 /* undo marking the pages as reserved */
1310 pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1);
1311 for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++)
1312 ClearPageReserved(page);
1313 pci_free_consistent(pci_dev, PAGE_SIZE << dmabuf->buforder,
1314 dmabuf->rawbuf, dmabuf->dma_handle);
1315 dmabuf->rawbuf = NULL;
1316 }
1317 dmabuf->mapped = dmabuf->ready = 0;
1318 }
1319
1320 static int
1321 prog_dmabuf(struct trident_state *state, enum dmabuf_mode rec)
1322 {
1323 struct dmabuf *dmabuf = &state->dmabuf;
1324 unsigned bytepersec;
1325 struct trident_state *s = state;
1326 unsigned bufsize, dma_nums;
1327 unsigned long flags;
1328 int ret, i, order;
1329
1330 if ((ret = lock_set_fmt(state)) < 0)
1331 return ret;
1332
1333 if (state->chans_num == 6)
1334 dma_nums = 5;
1335 else
1336 dma_nums = 1;
1337
1338 for (i = 0; i < dma_nums; i++) {
1339 if (i > 0) {
1340 s = state->other_states[i - 1];
1341 dmabuf = &s->dmabuf;
1342 dmabuf->fmt = state->dmabuf.fmt;
1343 dmabuf->rate = state->dmabuf.rate;
1344 }
1345
1346 spin_lock_irqsave(&s->card->lock, flags);
1347 dmabuf->hwptr = dmabuf->swptr = dmabuf->total_bytes = 0;
1348 dmabuf->count = dmabuf->error = 0;
1349 spin_unlock_irqrestore(&s->card->lock, flags);
1350
1351 /* allocate DMA buffer if not allocated yet */
1352 if (!dmabuf->rawbuf) {
1353 if (i == 0) {
1354 if ((ret = alloc_main_dmabuf(state))) {
1355 unlock_set_fmt(state);
1356 return ret;
1357 }
1358 } else {
1359 ret = -ENOMEM;
1360 order = state->dmabuf.buforder - 1;
1361 if (order >= DMABUF_MINORDER) {
1362 ret = alloc_dmabuf(dmabuf,
1363 state->card->pci_dev,
1364 order);
1365 }
1366 if (ret) {
1367 /* release the main DMA buffer */
1368 dealloc_dmabuf(&state->dmabuf, state->card->pci_dev);
1369 /* release the auxiliary DMA buffers */
1370 for (i -= 2; i >= 0; i--)
1371 dealloc_dmabuf(&state->other_states[i]->dmabuf,
1372 state->card->pci_dev);
1373 unlock_set_fmt(state);
1374 return ret;
1375 }
1376 }
1377 }
1378 /* FIXME: figure out all this OSS fragment stuff */
1379 bytepersec = dmabuf->rate << sample_shift[dmabuf->fmt];
1380 bufsize = PAGE_SIZE << dmabuf->buforder;
1381 if (dmabuf->ossfragshift) {
1382 if ((1000 << dmabuf->ossfragshift) < bytepersec)
1383 dmabuf->fragshift = ld2(bytepersec / 1000);
1384 else
1385 dmabuf->fragshift = dmabuf->ossfragshift;
1386 } else {
1387 /* lets hand out reasonable big ass buffers by default */
1388 dmabuf->fragshift = (dmabuf->buforder + PAGE_SHIFT - 2);
1389 }
1390 dmabuf->numfrag = bufsize >> dmabuf->fragshift;
1391 while (dmabuf->numfrag < 4 && dmabuf->fragshift > 3) {
1392 dmabuf->fragshift--;
1393 dmabuf->numfrag = bufsize >> dmabuf->fragshift;
1394 }
1395 dmabuf->fragsize = 1 << dmabuf->fragshift;
1396 if (dmabuf->ossmaxfrags >= 4 && dmabuf->ossmaxfrags < dmabuf->numfrag)
1397 dmabuf->numfrag = dmabuf->ossmaxfrags;
1398 dmabuf->fragsamples = dmabuf->fragsize >> sample_shift[dmabuf->fmt];
1399 dmabuf->dmasize = dmabuf->numfrag << dmabuf->fragshift;
1400
1401 memset(dmabuf->rawbuf, (dmabuf->fmt & TRIDENT_FMT_16BIT) ? 0 : 0x80,
1402 dmabuf->dmasize);
1403
1404 spin_lock_irqsave(&s->card->lock, flags);
1405 if (rec == DM_RECORD)
1406 trident_rec_setup(s);
1407 else /* DM_PLAYBACK */
1408 trident_play_setup(s);
1409
1410 spin_unlock_irqrestore(&s->card->lock, flags);
1411
1412 /* set the ready flag for the dma buffer */
1413 dmabuf->ready = 1;
1414
1415 pr_debug("trident: prog_dmabuf(%d), sample rate = %d, "
1416 "format = %d, numfrag = %d, fragsize = %d "
1417 "dmasize = %d\n", dmabuf->channel->num,
1418 dmabuf->rate, dmabuf->fmt, dmabuf->numfrag,
1419 dmabuf->fragsize, dmabuf->dmasize);
1420 }
1421 unlock_set_fmt(state);
1422 return 0;
1423 }
1424
1425
1426 static inline int prog_dmabuf_record(struct trident_state* state)
1427 {
1428 return prog_dmabuf(state, DM_RECORD);
1429 }
1430
1431 static inline int prog_dmabuf_playback(struct trident_state* state)
1432 {
1433 return prog_dmabuf(state, DM_PLAYBACK);
1434 }
1435
1436 /* we are doing quantum mechanics here, the buffer can only be empty, half or full filled i.e.
1437 |------------|------------| or |xxxxxxxxxxxx|------------| or |xxxxxxxxxxxx|xxxxxxxxxxxx|
1438 but we almost always get this
1439 |xxxxxx------|------------| or |xxxxxxxxxxxx|xxxxx-------|
1440 so we have to clear the tail space to "silence"
1441 |xxxxxx000000|------------| or |xxxxxxxxxxxx|xxxxxx000000|
1442 */
1443 static void
1444 trident_clear_tail(struct trident_state *state)
1445 {
1446 struct dmabuf *dmabuf = &state->dmabuf;
1447 unsigned swptr;
1448 unsigned char silence = (dmabuf->fmt & TRIDENT_FMT_16BIT) ? 0 : 0x80;
1449 unsigned int len;
1450 unsigned long flags;
1451
1452 spin_lock_irqsave(&state->card->lock, flags);
1453 swptr = dmabuf->swptr;
1454 spin_unlock_irqrestore(&state->card->lock, flags);
1455
1456 if (swptr == 0 || swptr == dmabuf->dmasize / 2 ||
1457 swptr == dmabuf->dmasize)
1458 return;
1459
1460 if (swptr < dmabuf->dmasize / 2)
1461 len = dmabuf->dmasize / 2 - swptr;
1462 else
1463 len = dmabuf->dmasize - swptr;
1464
1465 memset(dmabuf->rawbuf + swptr, silence, len);
1466 if (state->card->pci_id != PCI_DEVICE_ID_ALI_5451) {
1467 spin_lock_irqsave(&state->card->lock, flags);
1468 dmabuf->swptr += len;
1469 dmabuf->count += len;
1470 spin_unlock_irqrestore(&state->card->lock, flags);
1471 }
1472
1473 /* restart the dma machine in case it is halted */
1474 start_dac(state);
1475 }
1476
1477 static int
1478 drain_dac(struct trident_state *state, int nonblock)
1479 {
1480 DECLARE_WAITQUEUE(wait, current);
1481 struct dmabuf *dmabuf = &state->dmabuf;
1482 unsigned long flags;
1483 unsigned long tmo;
1484 int count;
1485 unsigned long diff = 0;
1486
1487 if (dmabuf->mapped || !dmabuf->ready)
1488 return 0;
1489
1490 add_wait_queue(&dmabuf->wait, &wait);
1491 for (;;) {
1492 /* It seems that we have to set the current state to TASK_INTERRUPTIBLE
1493 every time to make the process really go to sleep */
1494 set_current_state(TASK_INTERRUPTIBLE);
1495
1496 spin_lock_irqsave(&state->card->lock, flags);
1497 count = dmabuf->count;
1498 spin_unlock_irqrestore(&state->card->lock, flags);
1499
1500 if (count <= 0)
1501 break;
1502
1503 if (signal_pending(current))
1504 break;
1505
1506 if (nonblock) {
1507 remove_wait_queue(&dmabuf->wait, &wait);
1508 set_current_state(TASK_RUNNING);
1509 return -EBUSY;
1510 }
1511
1512 /* No matter how much data is left in the buffer, we have to wait until
1513 CSO == ESO/2 or CSO == ESO when address engine interrupts */
1514 if (state->card->pci_id == PCI_DEVICE_ID_ALI_5451 ||
1515 state->card->pci_id == PCI_DEVICE_ID_INTERG_5050) {
1516 diff = dmabuf->swptr - trident_get_dma_addr(state) + dmabuf->dmasize;
1517 diff = diff % (dmabuf->dmasize);
1518 tmo = (diff * HZ) / dmabuf->rate;
1519 } else {
1520 tmo = (dmabuf->dmasize * HZ) / dmabuf->rate;
1521 }
1522 tmo >>= sample_shift[dmabuf->fmt];
1523 if (!schedule_timeout(tmo ? tmo : 1) && tmo) {
1524 break;
1525 }
1526 }
1527 remove_wait_queue(&dmabuf->wait, &wait);
1528 set_current_state(TASK_RUNNING);
1529 if (signal_pending(current))
1530 return -ERESTARTSYS;
1531
1532 return 0;
1533 }
1534
1535 /* update buffer manangement pointers, especially, */
1536 /* dmabuf->count and dmabuf->hwptr */
1537 static void
1538 trident_update_ptr(struct trident_state *state)
1539 {
1540 struct dmabuf *dmabuf = &state->dmabuf;
1541 unsigned hwptr, swptr;
1542 int clear_cnt = 0;
1543 int diff;
1544 unsigned char silence;
1545 unsigned half_dmasize;
1546
1547 /* update hardware pointer */
1548 hwptr = trident_get_dma_addr(state);
1549 diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
1550 dmabuf->hwptr = hwptr;
1551 dmabuf->total_bytes += diff;
1552
1553 /* error handling and process wake up for ADC */
1554 if (dmabuf->enable == ADC_RUNNING) {
1555 if (dmabuf->mapped) {
1556 dmabuf->count -= diff;
1557 if (dmabuf->count >= (signed) dmabuf->fragsize)
1558 wake_up(&dmabuf->wait);
1559 } else {
1560 dmabuf->count += diff;
1561
1562 if (dmabuf->count < 0 ||
1563 dmabuf->count > dmabuf->dmasize) {
1564 /* buffer underrun or buffer overrun, */
1565 /* we have no way to recover it here, just */
1566 /* stop the machine and let the process */
1567 /* force hwptr and swptr to sync */
1568 __stop_adc(state);
1569 dmabuf->error++;
1570 }
1571 if (dmabuf->count < (signed) dmabuf->dmasize / 2)
1572 wake_up(&dmabuf->wait);
1573 }
1574 }
1575
1576 /* error handling and process wake up for DAC */
1577 if (dmabuf->enable == DAC_RUNNING) {
1578 if (dmabuf->mapped) {
1579 dmabuf->count += diff;
1580 if (dmabuf->count >= (signed) dmabuf->fragsize)
1581 wake_up(&dmabuf->wait);
1582 } else {
1583 dmabuf->count -= diff;
1584
1585 if (dmabuf->count < 0 ||
1586 dmabuf->count > dmabuf->dmasize) {
1587 /* buffer underrun or buffer overrun, we have no way to recover
1588 it here, just stop the machine and let the process force hwptr
1589 and swptr to sync */
1590 __stop_dac(state);
1591 dmabuf->error++;
1592 } else if (!dmabuf->endcleared) {
1593 swptr = dmabuf->swptr;
1594 silence = (dmabuf->fmt & TRIDENT_FMT_16BIT ? 0 : 0x80);
1595 if (dmabuf->update_flag & ALI_ADDRESS_INT_UPDATE) {
1596 /* We must clear end data of 1/2 dmabuf if needed.
1597 According to 1/2 algorithm of Address Engine Interrupt,
1598 check the validation of the data of half dmasize. */
1599 half_dmasize = dmabuf->dmasize / 2;
1600 if ((diff = hwptr - half_dmasize) < 0)
1601 diff = hwptr;
1602 if ((dmabuf->count + diff) < half_dmasize) {
1603 //there is invalid data in the end of half buffer
1604 if ((clear_cnt = half_dmasize - swptr) < 0)
1605 clear_cnt += half_dmasize;
1606 //clear the invalid data
1607 memset(dmabuf->rawbuf + swptr, silence, clear_cnt);
1608 if (state->chans_num == 6) {
1609 clear_cnt = clear_cnt / 2;
1610 swptr = swptr / 2;
1611 memset(state->other_states[0]->dmabuf.rawbuf + swptr,
1612 silence, clear_cnt);
1613 memset(state->other_states[1]->dmabuf.rawbuf + swptr,
1614 silence, clear_cnt);
1615 memset(state->other_states[2]->dmabuf.rawbuf + swptr,
1616 silence, clear_cnt);
1617 memset(state->other_states[3]->dmabuf.rawbuf + swptr,
1618 silence, clear_cnt);
1619 }
1620 dmabuf->endcleared = 1;
1621 }
1622 } else if (dmabuf->count < (signed) dmabuf->fragsize) {
1623 clear_cnt = dmabuf->fragsize;
1624 if ((swptr + clear_cnt) > dmabuf->dmasize)
1625 clear_cnt = dmabuf->dmasize - swptr;
1626 memset(dmabuf->rawbuf + swptr, silence, clear_cnt);
1627 if (state->chans_num == 6) {
1628 clear_cnt = clear_cnt / 2;
1629 swptr = swptr / 2;
1630 memset(state->other_states[0]->dmabuf.rawbuf + swptr,
1631 silence, clear_cnt);
1632 memset(state->other_states[1]->dmabuf.rawbuf + swptr,
1633 silence, clear_cnt);
1634 memset(state->other_states[2]->dmabuf.rawbuf + swptr,
1635 silence, clear_cnt);
1636 memset(state->other_states[3]->dmabuf.rawbuf + swptr,
1637 silence, clear_cnt);
1638 }
1639 dmabuf->endcleared = 1;
1640 }
1641 }
1642 /* trident_update_ptr is called by interrupt handler or by process via
1643 ioctl/poll, we only wake up the waiting process when we have more
1644 than 1/2 buffer free (always true for interrupt handler) */
1645 if (dmabuf->count < (signed) dmabuf->dmasize / 2)
1646 wake_up(&dmabuf->wait);
1647 }
1648 }
1649 dmabuf->update_flag &= ~ALI_ADDRESS_INT_UPDATE;
1650 }
1651
1652 static void
1653 trident_address_interrupt(struct trident_card *card)
1654 {
1655 int i;
1656 struct trident_state *state;
1657 unsigned int channel;
1658
1659 /* Update the pointers for all channels we are running. */
1660 /* FIXME: should read interrupt status only once */
1661 for (i = 0; i < NR_HW_CH; i++) {
1662 channel = 63 - i;
1663 if (trident_check_channel_interrupt(card, channel)) {
1664 trident_ack_channel_interrupt(card, channel);
1665 if ((state = card->states[i]) != NULL) {
1666 trident_update_ptr(state);
1667 } else {
1668 printk(KERN_WARNING "trident: spurious channel "
1669 "irq %d.\n", channel);
1670 trident_stop_voice(card, channel);
1671 trident_disable_voice_irq(card, channel);
1672 }
1673 }
1674 }
1675 }
1676
1677 static void
1678 ali_hwvol_control(struct trident_card *card, int opt)
1679 {
1680 u16 dwTemp, volume[2], mute, diff, *pVol[2];
1681
1682 dwTemp = ali_ac97_read(card->ac97_codec[0], 0x02);
1683 mute = dwTemp & 0x8000;
1684 volume[0] = dwTemp & 0x001f;
1685 volume[1] = (dwTemp & 0x1f00) >> 8;
1686 if (volume[0] < volume[1]) {
1687 pVol[0] = &volume[0];
1688 pVol[1] = &volume[1];
1689 } else {
1690 pVol[1] = &volume[0];
1691 pVol[0] = &volume[1];
1692 }
1693 diff = *(pVol[1]) - *(pVol[0]);
1694
1695 if (opt == 1) { // MUTE
1696 dwTemp ^= 0x8000;
1697 ali_ac97_write(card->ac97_codec[0],
1698 0x02, dwTemp);
1699 } else if (opt == 2) { // Down
1700 if (mute)
1701 return;
1702 if (*(pVol[1]) < 0x001f) {
1703 (*pVol[1])++;
1704 *(pVol[0]) = *(pVol[1]) - diff;
1705 }
1706 dwTemp &= 0xe0e0;
1707 dwTemp |= (volume[0]) | (volume[1] << 8);
1708 ali_ac97_write(card->ac97_codec[0], 0x02, dwTemp);
1709 card->ac97_codec[0]->mixer_state[0] = ((32 - volume[0]) * 25 / 8) |
1710 (((32 - volume[1]) * 25 / 8) << 8);
1711 } else if (opt == 4) { // Up
1712 if (mute)
1713 return;
1714 if (*(pVol[0]) > 0) {
1715 (*pVol[0])--;
1716 *(pVol[1]) = *(pVol[0]) + diff;
1717 }
1718 dwTemp &= 0xe0e0;
1719 dwTemp |= (volume[0]) | (volume[1] << 8);
1720 ali_ac97_write(card->ac97_codec[0], 0x02, dwTemp);
1721 card->ac97_codec[0]->mixer_state[0] = ((32 - volume[0]) * 25 / 8) |
1722 (((32 - volume[1]) * 25 / 8) << 8);
1723 } else {
1724 /* Nothing needs doing */
1725 }
1726 }
1727
1728 /*
1729 * Re-enable reporting of vol change after 0.1 seconds
1730 */
1731
1732 static void
1733 ali_timeout(unsigned long ptr)
1734 {
1735 struct trident_card *card = (struct trident_card *) ptr;
1736 u16 temp = 0;
1737
1738 /* Enable GPIO IRQ (MISCINT bit 18h) */
1739 temp = inw(TRID_REG(card, T4D_MISCINT + 2));
1740 temp |= 0x0004;
1741 outw(temp, TRID_REG(card, T4D_MISCINT + 2));
1742 }
1743
1744 /*
1745 * Set up the timer to clear the vol change notification
1746 */
1747
1748 static void
1749 ali_set_timer(struct trident_card *card)
1750 {
1751 /* Add Timer Routine to Enable GPIO IRQ */
1752 del_timer(&card->timer); /* Never queue twice */
1753 card->timer.function = ali_timeout;
1754 card->timer.data = (unsigned long) card;
1755 card->timer.expires = jiffies + HZ / 10;
1756 add_timer(&card->timer);
1757 }
1758
1759 /*
1760 * Process a GPIO event
1761 */
1762
1763 static void
1764 ali_queue_task(struct trident_card *card, int opt)
1765 {
1766 u16 temp;
1767
1768 /* Disable GPIO IRQ (MISCINT bit 18h) */
1769 temp = inw(TRID_REG(card, T4D_MISCINT + 2));
1770 temp &= (u16) (~0x0004);
1771 outw(temp, TRID_REG(card, T4D_MISCINT + 2));
1772
1773 /* Adjust the volume */
1774 ali_hwvol_control(card, opt);
1775
1776 /* Set the timer for 1/10th sec */
1777 ali_set_timer(card);
1778 }
1779
1780 static void
1781 cyber_address_interrupt(struct trident_card *card)
1782 {
1783 int i, irq_status;
1784 struct trident_state *state;
1785 unsigned int channel;
1786
1787 /* Update the pointers for all channels we are running. */
1788 /* FIXED: read interrupt status only once */
1789 irq_status = inl(TRID_REG(card, T4D_AINT_A));
1790
1791 pr_debug("cyber_address_interrupt: irq_status 0x%X\n", irq_status);
1792
1793 for (i = 0; i < NR_HW_CH; i++) {
1794 channel = 31 - i;
1795 if (irq_status & (1 << channel)) {
1796 /* clear bit by writing a 1, zeroes are ignored */
1797 outl((1 << channel), TRID_REG(card, T4D_AINT_A));
1798
1799 pr_debug("cyber_interrupt: channel %d\n", channel);
1800
1801 if ((state = card->states[i]) != NULL) {
1802 trident_update_ptr(state);
1803 } else {
1804 printk(KERN_WARNING "cyber5050: spurious "
1805 "channel irq %d.\n", channel);
1806 trident_stop_voice(card, channel);
1807 trident_disable_voice_irq(card, channel);
1808 }
1809 }
1810 }
1811 }
1812
1813 static irqreturn_t
1814 trident_interrupt(int irq, void *dev_id)
1815 {
1816 struct trident_card *card = (struct trident_card *) dev_id;
1817 u32 event;
1818 u32 gpio;
1819
1820 spin_lock(&card->lock);
1821 event = inl(TRID_REG(card, T4D_MISCINT));
1822
1823 pr_debug("trident: trident_interrupt called, MISCINT = 0x%08x\n",
1824 event);
1825
1826 if (event & ADDRESS_IRQ) {
1827 card->address_interrupt(card);
1828 }
1829
1830 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
1831 /* GPIO IRQ (H/W Volume Control) */
1832 event = inl(TRID_REG(card, T4D_MISCINT));
1833 if (event & (1 << 25)) {
1834 gpio = inl(TRID_REG(card, ALI_GPIO));
1835 if (!timer_pending(&card->timer))
1836 ali_queue_task(card, gpio & 0x07);
1837 }
1838 event = inl(TRID_REG(card, T4D_MISCINT));
1839 outl(event | (ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
1840 TRID_REG(card, T4D_MISCINT));
1841 spin_unlock(&card->lock);
1842 return IRQ_HANDLED;
1843 }
1844
1845 /* manually clear interrupt status, bad hardware design, blame T^2 */
1846 outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
1847 TRID_REG(card, T4D_MISCINT));
1848 spin_unlock(&card->lock);
1849 return IRQ_HANDLED;
1850 }
1851
1852 /* in this loop, dmabuf.count signifies the amount of data that is waiting */
1853 /* to be copied to the user's buffer. it is filled by the dma machine and */
1854 /* drained by this loop. */
1855 static ssize_t
1856 trident_read(struct file *file, char __user *buffer, size_t count, loff_t * ppos)
1857 {
1858 struct trident_state *state = (struct trident_state *)file->private_data;
1859 struct dmabuf *dmabuf = &state->dmabuf;
1860 ssize_t ret = 0;
1861 unsigned long flags;
1862 unsigned swptr;
1863 int cnt;
1864
1865 pr_debug("trident: trident_read called, count = %zd\n", count);
1866
1867 VALIDATE_STATE(state);
1868
1869 if (dmabuf->mapped)
1870 return -ENXIO;
1871 if (!access_ok(VERIFY_WRITE, buffer, count))
1872 return -EFAULT;
1873
1874 mutex_lock(&state->sem);
1875 if (!dmabuf->ready && (ret = prog_dmabuf_record(state)))
1876 goto out;
1877
1878 while (count > 0) {
1879 spin_lock_irqsave(&state->card->lock, flags);
1880 if (dmabuf->count > (signed) dmabuf->dmasize) {
1881 /* buffer overrun, we are recovering from */
1882 /* sleep_on_timeout, resync hwptr and swptr, */
1883 /* make process flush the buffer */
1884 dmabuf->count = dmabuf->dmasize;
1885 dmabuf->swptr = dmabuf->hwptr;
1886 }
1887 swptr = dmabuf->swptr;
1888 cnt = dmabuf->dmasize - swptr;
1889 if (dmabuf->count < cnt)
1890 cnt = dmabuf->count;
1891 spin_unlock_irqrestore(&state->card->lock, flags);
1892
1893 if (cnt > count)
1894 cnt = count;
1895 if (cnt <= 0) {
1896 unsigned long tmo;
1897 /* buffer is empty, start the dma machine and */
1898 /* wait for data to be recorded */
1899 start_adc(state);
1900 if (file->f_flags & O_NONBLOCK) {
1901 if (!ret)
1902 ret = -EAGAIN;
1903 goto out;
1904 }
1905
1906 mutex_unlock(&state->sem);
1907 /* No matter how much space left in the buffer, */
1908 /* we have to wait until CSO == ESO/2 or CSO == ESO */
1909 /* when address engine interrupts */
1910 tmo = (dmabuf->dmasize * HZ) / (dmabuf->rate * 2);
1911 tmo >>= sample_shift[dmabuf->fmt];
1912 /* There are two situations when sleep_on_timeout returns, one is when
1913 the interrupt is serviced correctly and the process is waked up by
1914 ISR ON TIME. Another is when timeout is expired, which means that
1915 either interrupt is NOT serviced correctly (pending interrupt) or it
1916 is TOO LATE for the process to be scheduled to run (scheduler latency)
1917 which results in a (potential) buffer overrun. And worse, there is
1918 NOTHING we can do to prevent it. */
1919 if (!interruptible_sleep_on_timeout(&dmabuf->wait, tmo)) {
1920 pr_debug(KERN_ERR "trident: recording schedule timeout, "
1921 "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
1922 dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
1923 dmabuf->hwptr, dmabuf->swptr);
1924
1925 /* a buffer overrun, we delay the recovery until next time the
1926 while loop begin and we REALLY have space to record */
1927 }
1928 if (signal_pending(current)) {
1929 if (!ret)
1930 ret = -ERESTARTSYS;
1931 goto out;
1932 }
1933 mutex_lock(&state->sem);
1934 if (dmabuf->mapped) {
1935 if (!ret)
1936 ret = -ENXIO;
1937 goto out;
1938 }
1939 continue;
1940 }
1941
1942 if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) {
1943 if (!ret)
1944 ret = -EFAULT;
1945 goto out;
1946 }
1947
1948 swptr = (swptr + cnt) % dmabuf->dmasize;
1949
1950 spin_lock_irqsave(&state->card->lock, flags);
1951 dmabuf->swptr = swptr;
1952 dmabuf->count -= cnt;
1953 spin_unlock_irqrestore(&state->card->lock, flags);
1954
1955 count -= cnt;
1956 buffer += cnt;
1957 ret += cnt;
1958 start_adc(state);
1959 }
1960 out:
1961 mutex_unlock(&state->sem);
1962 return ret;
1963 }
1964
1965 /* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to
1966 the soundcard. it is drained by the dma machine and filled by this loop. */
1967
1968 static ssize_t
1969 trident_write(struct file *file, const char __user *buffer, size_t count, loff_t * ppos)
1970 {
1971 struct trident_state *state = (struct trident_state *)file->private_data;
1972 struct dmabuf *dmabuf = &state->dmabuf;
1973 ssize_t ret;
1974 unsigned long flags;
1975 unsigned swptr;
1976 int cnt;
1977 unsigned int state_cnt;
1978 unsigned int copy_count;
1979 int lret; /* for lock_set_fmt */
1980
1981 pr_debug("trident: trident_write called, count = %zd\n", count);
1982
1983 VALIDATE_STATE(state);
1984
1985 /*
1986 * Guard against an mmap or ioctl while writing
1987 */
1988
1989 mutex_lock(&state->sem);
1990
1991 if (dmabuf->mapped) {
1992 ret = -ENXIO;
1993 goto out;
1994 }
1995 if (!dmabuf->ready && (ret = prog_dmabuf_playback(state)))
1996 goto out;
1997
1998 if (!access_ok(VERIFY_READ, buffer, count)) {
1999 ret = -EFAULT;
2000 goto out;
2001 }
2002
2003 ret = 0;
2004
2005 while (count > 0) {
2006 spin_lock_irqsave(&state->card->lock, flags);
2007 if (dmabuf->count < 0) {
2008 /* buffer underrun, we are recovering from */
2009 /* sleep_on_timeout, resync hwptr and swptr */
2010 dmabuf->count = 0;
2011 dmabuf->swptr = dmabuf->hwptr;
2012 }
2013 swptr = dmabuf->swptr;
2014 cnt = dmabuf->dmasize - swptr;
2015 if (dmabuf->count + cnt > dmabuf->dmasize)
2016 cnt = dmabuf->dmasize - dmabuf->count;
2017 spin_unlock_irqrestore(&state->card->lock, flags);
2018
2019 if (cnt > count)
2020 cnt = count;
2021 if (cnt <= 0) {
2022 unsigned long tmo;
2023 /* buffer is full, start the dma machine and */
2024 /* wait for data to be played */
2025 start_dac(state);
2026 if (file->f_flags & O_NONBLOCK) {
2027 if (!ret)
2028 ret = -EAGAIN;
2029 goto out;
2030 }
2031 /* No matter how much data left in the buffer, */
2032 /* we have to wait until CSO == ESO/2 or CSO == ESO */
2033 /* when address engine interrupts */
2034 lock_set_fmt(state);
2035 tmo = (dmabuf->dmasize * HZ) / (dmabuf->rate * 2);
2036 tmo >>= sample_shift[dmabuf->fmt];
2037 unlock_set_fmt(state);
2038 mutex_unlock(&state->sem);
2039
2040 /* There are two situations when sleep_on_timeout */
2041 /* returns, one is when the interrupt is serviced */
2042 /* correctly and the process is waked up by ISR */
2043 /* ON TIME. Another is when timeout is expired, which */
2044 /* means that either interrupt is NOT serviced */
2045 /* correctly (pending interrupt) or it is TOO LATE */
2046 /* for the process to be scheduled to run */
2047 /* (scheduler latency) which results in a (potential) */
2048 /* buffer underrun. And worse, there is NOTHING we */
2049 /* can do to prevent it. */
2050 if (!interruptible_sleep_on_timeout(&dmabuf->wait, tmo)) {
2051 pr_debug(KERN_ERR "trident: playback schedule "
2052 "timeout, dmasz %u fragsz %u count %i "
2053 "hwptr %u swptr %u\n", dmabuf->dmasize,
2054 dmabuf->fragsize, dmabuf->count,
2055 dmabuf->hwptr, dmabuf->swptr);
2056
2057 /* a buffer underrun, we delay the recovery */
2058 /* until next time the while loop begin and */
2059 /* we REALLY have data to play */
2060 }
2061 if (signal_pending(current)) {
2062 if (!ret)
2063 ret = -ERESTARTSYS;
2064 goto out_nolock;
2065 }
2066 mutex_lock(&state->sem);
2067 if (dmabuf->mapped) {
2068 if (!ret)
2069 ret = -ENXIO;
2070 goto out;
2071 }
2072 continue;
2073 }
2074 if ((lret = lock_set_fmt(state)) < 0) {
2075 ret = lret;
2076 goto out;
2077 }
2078
2079 if (state->chans_num == 6) {
2080 copy_count = 0;
2081 state_cnt = 0;
2082 if (ali_write_5_1(state, buffer, cnt, &copy_count,
2083 &state_cnt) == -EFAULT) {
2084 if (state_cnt) {
2085 swptr = (swptr + state_cnt) % dmabuf->dmasize;
2086 spin_lock_irqsave(&state->card->lock, flags);
2087 dmabuf->swptr = swptr;
2088 dmabuf->count += state_cnt;
2089 dmabuf->endcleared = 0;
2090 spin_unlock_irqrestore(&state->card->lock, flags);
2091 }
2092 ret += copy_count;
2093 if (!ret)
2094 ret = -EFAULT;
2095 unlock_set_fmt(state);
2096 goto out;
2097 }
2098 } else {
2099 if (copy_from_user(dmabuf->rawbuf + swptr,
2100 buffer, cnt)) {
2101 if (!ret)
2102 ret = -EFAULT;
2103 unlock_set_fmt(state);
2104 goto out;
2105 }
2106 state_cnt = cnt;
2107 }
2108 unlock_set_fmt(state);
2109
2110 swptr = (swptr + state_cnt) % dmabuf->dmasize;
2111
2112 spin_lock_irqsave(&state->card->lock, flags);
2113 dmabuf->swptr = swptr;
2114 dmabuf->count += state_cnt;
2115 dmabuf->endcleared = 0;
2116 spin_unlock_irqrestore(&state->card->lock, flags);
2117
2118 count -= cnt;
2119 buffer += cnt;
2120 ret += cnt;
2121 start_dac(state);
2122 }
2123 out:
2124 mutex_unlock(&state->sem);
2125 out_nolock:
2126 return ret;
2127 }
2128
2129 /* No kernel lock - we have our own spinlock */
2130 static unsigned int
2131 trident_poll(struct file *file, struct poll_table_struct *wait)
2132 {
2133 struct trident_state *state = (struct trident_state *)file->private_data;
2134 struct dmabuf *dmabuf = &state->dmabuf;
2135 unsigned long flags;
2136 unsigned int mask = 0;
2137
2138 VALIDATE_STATE(state);
2139
2140 /*
2141 * Guard against a parallel poll and write causing multiple
2142 * prog_dmabuf events
2143 */
2144
2145 mutex_lock(&state->sem);
2146
2147 if (file->f_mode & FMODE_WRITE) {
2148 if (!dmabuf->ready && prog_dmabuf_playback(state)) {
2149 mutex_unlock(&state->sem);
2150 return 0;
2151 }
2152 poll_wait(file, &dmabuf->wait, wait);
2153 }
2154 if (file->f_mode & FMODE_READ) {
2155 if (!dmabuf->ready && prog_dmabuf_record(state)) {
2156 mutex_unlock(&state->sem);
2157 return 0;
2158 }
2159 poll_wait(file, &dmabuf->wait, wait);
2160 }
2161
2162 mutex_unlock(&state->sem);
2163
2164 spin_lock_irqsave(&state->card->lock, flags);
2165 trident_update_ptr(state);
2166 if (file->f_mode & FMODE_READ) {
2167 if (dmabuf->count >= (signed) dmabuf->fragsize)
2168 mask |= POLLIN | POLLRDNORM;
2169 }
2170 if (file->f_mode & FMODE_WRITE) {
2171 if (dmabuf->mapped) {
2172 if (dmabuf->count >= (signed) dmabuf->fragsize)
2173 mask |= POLLOUT | POLLWRNORM;
2174 } else {
2175 if ((signed) dmabuf->dmasize >= dmabuf->count +
2176 (signed) dmabuf->fragsize)
2177 mask |= POLLOUT | POLLWRNORM;
2178 }
2179 }
2180 spin_unlock_irqrestore(&state->card->lock, flags);
2181
2182 return mask;
2183 }
2184
2185 static int
2186 trident_mmap(struct file *file, struct vm_area_struct *vma)
2187 {
2188 struct trident_state *state = (struct trident_state *)file->private_data;
2189 struct dmabuf *dmabuf = &state->dmabuf;
2190 int ret = -EINVAL;
2191 unsigned long size;
2192
2193 VALIDATE_STATE(state);
2194
2195 /*
2196 * Lock against poll read write or mmap creating buffers. Also lock
2197 * a read or write against an mmap.
2198 */
2199
2200 mutex_lock(&state->sem);
2201
2202 if (vma->vm_flags & VM_WRITE) {
2203 if ((ret = prog_dmabuf_playback(state)) != 0)
2204 goto out;
2205 } else if (vma->vm_flags & VM_READ) {
2206 if ((ret = prog_dmabuf_record(state)) != 0)
2207 goto out;
2208 } else
2209 goto out;
2210
2211 ret = -EINVAL;
2212 if (vma->vm_pgoff != 0)
2213 goto out;
2214 size = vma->vm_end - vma->vm_start;
2215 if (size > (PAGE_SIZE << dmabuf->buforder))
2216 goto out;
2217 ret = -EAGAIN;
2218 if (remap_pfn_range(vma, vma->vm_start,
2219 virt_to_phys(dmabuf->rawbuf) >> PAGE_SHIFT,
2220 size, vma->vm_page_prot))
2221 goto out;
2222 dmabuf->mapped = 1;
2223 ret = 0;
2224 out:
2225 mutex_unlock(&state->sem);
2226 return ret;
2227 }
2228
2229 static int
2230 trident_ioctl(struct inode *inode, struct file *file,
2231 unsigned int cmd, unsigned long arg)
2232 {
2233 struct trident_state *state = (struct trident_state *)file->private_data;
2234 struct dmabuf *dmabuf = &state->dmabuf;
2235 unsigned long flags;
2236 audio_buf_info abinfo;
2237 count_info cinfo;
2238 int val, mapped, ret = 0;
2239 struct trident_card *card = state->card;
2240 void __user *argp = (void __user *)arg;
2241 int __user *p = argp;
2242
2243 VALIDATE_STATE(state);
2244
2245
2246 mapped = ((file->f_mode & (FMODE_WRITE | FMODE_READ)) && dmabuf->mapped);
2247
2248 pr_debug("trident: trident_ioctl, command = %2d, arg = 0x%08x\n",
2249 _IOC_NR(cmd), arg ? *p : 0);
2250
2251 switch (cmd) {
2252 case OSS_GETVERSION:
2253 ret = put_user(SOUND_VERSION, p);
2254 break;
2255
2256 case SNDCTL_DSP_RESET:
2257 /* FIXME: spin_lock ? */
2258 if (file->f_mode & FMODE_WRITE) {
2259 stop_dac(state);
2260 synchronize_irq(card->irq);
2261 dmabuf->ready = 0;
2262 dmabuf->swptr = dmabuf->hwptr = 0;
2263 dmabuf->count = dmabuf->total_bytes = 0;
2264 }
2265 if (file->f_mode & FMODE_READ) {
2266 stop_adc(state);
2267 synchronize_irq(card->irq);
2268 dmabuf->ready = 0;
2269 dmabuf->swptr = dmabuf->hwptr = 0;
2270 dmabuf->count = dmabuf->total_bytes = 0;
2271 }
2272 break;
2273
2274 case SNDCTL_DSP_SYNC:
2275 if (file->f_mode & FMODE_WRITE)
2276 ret = drain_dac(state, file->f_flags & O_NONBLOCK);
2277 break;
2278
2279 case SNDCTL_DSP_SPEED: /* set smaple rate */
2280 if (get_user(val, p)) {
2281 ret = -EFAULT;
2282 break;
2283 }
2284 if (val >= 0) {
2285 if (file->f_mode & FMODE_WRITE) {
2286 stop_dac(state);
2287 dmabuf->ready = 0;
2288 spin_lock_irqsave(&state->card->lock, flags);
2289 trident_set_dac_rate(state, val);
2290 spin_unlock_irqrestore(&state->card->lock, flags);
2291 }
2292 if (file->f_mode & FMODE_READ) {
2293 stop_adc(state);
2294 dmabuf->ready = 0;
2295 spin_lock_irqsave(&state->card->lock, flags);
2296 trident_set_adc_rate(state, val);
2297 spin_unlock_irqrestore(&state->card->lock, flags);
2298 }
2299 }
2300 ret = put_user(dmabuf->rate, p);
2301 break;
2302
2303 case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
2304 if (get_user(val, p)) {
2305 ret = -EFAULT;
2306 break;
2307 }
2308 if ((ret = lock_set_fmt(state)) < 0)
2309 return ret;
2310
2311 if (file->f_mode & FMODE_WRITE) {
2312 stop_dac(state);
2313 dmabuf->ready = 0;
2314 if (val)
2315 dmabuf->fmt |= TRIDENT_FMT_STEREO;
2316 else
2317 dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
2318 }
2319 if (file->f_mode & FMODE_READ) {
2320 stop_adc(state);
2321 dmabuf->ready = 0;
2322 if (val)
2323 dmabuf->fmt |= TRIDENT_FMT_STEREO;
2324 else
2325 dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
2326 }
2327 unlock_set_fmt(state);
2328 break;
2329
2330 case SNDCTL_DSP_GETBLKSIZE:
2331 if (file->f_mode & FMODE_WRITE) {
2332 if ((val = prog_dmabuf_playback(state)))
2333 ret = val;
2334 else
2335 ret = put_user(dmabuf->fragsize, p);
2336 break;
2337 }
2338 if (file->f_mode & FMODE_READ) {
2339 if ((val = prog_dmabuf_record(state)))
2340 ret = val;
2341 else
2342 ret = put_user(dmabuf->fragsize, p);
2343 break;
2344 }
2345 /* neither READ nor WRITE? is this even possible? */
2346 ret = -EINVAL;
2347 break;
2348
2349
2350 case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format */
2351 ret = put_user(AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
2352 AFMT_U8, p);
2353 break;
2354
2355 case SNDCTL_DSP_SETFMT: /* Select sample format */
2356 if (get_user(val, p)) {
2357 ret = -EFAULT;
2358 break;
2359 }
2360 if ((ret = lock_set_fmt(state)) < 0)
2361 return ret;
2362
2363 if (val != AFMT_QUERY) {
2364 if (file->f_mode & FMODE_WRITE) {
2365 stop_dac(state);
2366 dmabuf->ready = 0;
2367 if (val == AFMT_S16_LE)
2368 dmabuf->fmt |= TRIDENT_FMT_16BIT;
2369 else
2370 dmabuf->fmt &= ~TRIDENT_FMT_16BIT;
2371 }
2372 if (file->f_mode & FMODE_READ) {
2373 stop_adc(state);
2374 dmabuf->ready = 0;
2375 if (val == AFMT_S16_LE)
2376 dmabuf->fmt |= TRIDENT_FMT_16BIT;
2377 else
2378 dmabuf->fmt &= ~TRIDENT_FMT_16BIT;
2379 }
2380 }
2381 unlock_set_fmt(state);
2382 ret = put_user((dmabuf->fmt & TRIDENT_FMT_16BIT) ? AFMT_S16_LE :
2383 AFMT_U8, p);
2384 break;
2385
2386 case SNDCTL_DSP_CHANNELS:
2387 if (get_user(val, p)) {
2388 ret = -EFAULT;
2389 break;
2390 }
2391 if (val != 0) {
2392 if ((ret = lock_set_fmt(state)) < 0)
2393 return ret;
2394
2395 if (file->f_mode & FMODE_WRITE) {
2396 stop_dac(state);
2397 dmabuf->ready = 0;
2398
2399 //prevent from memory leak
2400 if ((state->chans_num > 2) && (state->chans_num != val)) {
2401 ali_free_other_states_resources(state);
2402 state->chans_num = 1;
2403 }
2404
2405 if (val >= 2) {
2406
2407 dmabuf->fmt |= TRIDENT_FMT_STEREO;
2408 if ((val == 6) && (state->card->pci_id == PCI_DEVICE_ID_ALI_5451)) {
2409 if (card->rec_channel_use_count > 0) {
2410 printk(KERN_ERR "trident: Record is "
2411 "working on the card!\n");
2412 ret = -EBUSY;
2413 unlock_set_fmt(state);
2414 break;
2415 }
2416
2417 ret = ali_setup_multi_channels(state->card, 6);
2418 if (ret < 0) {
2419 unlock_set_fmt(state);
2420 break;
2421 }
2422 mutex_lock(&state->card->open_mutex);
2423 ret = ali_allocate_other_states_resources(state, 6);
2424 if (ret < 0) {
2425 mutex_unlock(&state->card->open_mutex);
2426 unlock_set_fmt(state);
2427 break;
2428 }
2429 state->card->multi_channel_use_count++;
2430 mutex_unlock(&state->card->open_mutex);
2431 } else
2432 val = 2; /*yield to 2-channels */
2433 } else
2434 dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
2435 state->chans_num = val;
2436 }
2437 if (file->f_mode & FMODE_READ) {
2438 stop_adc(state);
2439 dmabuf->ready = 0;
2440 if (val >= 2) {
2441 if (!((file->f_mode & FMODE_WRITE) &&
2442 (val == 6)))
2443 val = 2;
2444 dmabuf->fmt |= TRIDENT_FMT_STEREO;
2445 } else
2446 dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
2447 state->chans_num = val;
2448 }
2449 unlock_set_fmt(state);
2450 }
2451 ret = put_user(val, p);
2452 break;
2453
2454 case SNDCTL_DSP_POST:
2455 /* Cause the working fragment to be output */
2456 break;
2457
2458 case SNDCTL_DSP_SUBDIVIDE:
2459 if (dmabuf->subdivision) {
2460 ret = -EINVAL;
2461 break;
2462 }
2463 if (get_user(val, p)) {
2464 ret = -EFAULT;
2465 break;
2466 }
2467 if (val != 1 && val != 2 && val != 4) {
2468 ret = -EINVAL;
2469 break;
2470 }
2471 dmabuf->subdivision = val;
2472 break;
2473
2474 case SNDCTL_DSP_SETFRAGMENT:
2475 if (get_user(val, p)) {
2476 ret = -EFAULT;
2477 break;
2478 }
2479
2480 dmabuf->ossfragshift = val & 0xffff;
2481 dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
2482 if (dmabuf->ossfragshift < 4)
2483 dmabuf->ossfragshift = 4;
2484 if (dmabuf->ossfragshift > 15)
2485 dmabuf->ossfragshift = 15;
2486 if (dmabuf->ossmaxfrags < 4)
2487 dmabuf->ossmaxfrags = 4;
2488
2489 break;
2490
2491 case SNDCTL_DSP_GETOSPACE:
2492 if (!(file->f_mode & FMODE_WRITE)) {
2493 ret = -EINVAL;
2494 break;
2495 }
2496 if (!dmabuf->ready && (val = prog_dmabuf_playback(state)) != 0) {
2497 ret = val;
2498 break;
2499 }
2500 spin_lock_irqsave(&state->card->lock, flags);
2501 trident_update_ptr(state);
2502 abinfo.fragsize = dmabuf->fragsize;
2503 abinfo.bytes = dmabuf->dmasize - dmabuf->count;
2504 abinfo.fragstotal = dmabuf->numfrag;
2505 abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
2506 spin_unlock_irqrestore(&state->card->lock, flags);
2507 ret = copy_to_user(argp, &abinfo, sizeof (abinfo)) ?
2508 -EFAULT : 0;
2509 break;
2510
2511 case SNDCTL_DSP_GETISPACE:
2512 if (!(file->f_mode & FMODE_READ)) {
2513 ret = -EINVAL;
2514 break;
2515 }
2516 if (!dmabuf->ready && (val = prog_dmabuf_record(state)) != 0) {
2517 ret = val;
2518 break;
2519 }
2520 spin_lock_irqsave(&state->card->lock, flags);
2521 trident_update_ptr(state);
2522 abinfo.fragsize = dmabuf->fragsize;
2523 abinfo.bytes = dmabuf->count;
2524 abinfo.fragstotal = dmabuf->numfrag;
2525 abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
2526 spin_unlock_irqrestore(&state->card->lock, flags);
2527 ret = copy_to_user(argp, &abinfo, sizeof (abinfo)) ?
2528 -EFAULT : 0;
2529 break;
2530
2531 case SNDCTL_DSP_NONBLOCK:
2532 file->f_flags |= O_NONBLOCK;
2533 break;
2534
2535 case SNDCTL_DSP_GETCAPS:
2536 ret = put_user(DSP_CAP_REALTIME | DSP_CAP_TRIGGER |
2537 DSP_CAP_MMAP | DSP_CAP_BIND, p);
2538 break;
2539
2540 case SNDCTL_DSP_GETTRIGGER:
2541 val = 0;
2542 if ((file->f_mode & FMODE_READ) && dmabuf->enable)
2543 val |= PCM_ENABLE_INPUT;
2544 if ((file->f_mode & FMODE_WRITE) && dmabuf->enable)
2545 val |= PCM_ENABLE_OUTPUT;
2546 ret = put_user(val, p);
2547 break;
2548
2549 case SNDCTL_DSP_SETTRIGGER:
2550 if (get_user(val, p)) {
2551 ret = -EFAULT;
2552 break;
2553 }
2554 if (file->f_mode & FMODE_READ) {
2555 if (val & PCM_ENABLE_INPUT) {
2556 if (!dmabuf->ready &&
2557 (ret = prog_dmabuf_record(state)))
2558 break;
2559 start_adc(state);
2560 } else
2561 stop_adc(state);
2562 }
2563 if (file->f_mode & FMODE_WRITE) {
2564 if (val & PCM_ENABLE_OUTPUT) {
2565 if (!dmabuf->ready &&
2566 (ret = prog_dmabuf_playback(state)))
2567 break;
2568 start_dac(state);
2569 } else
2570 stop_dac(state);
2571 }
2572 break;
2573
2574 case SNDCTL_DSP_GETIPTR:
2575 if (!(file->f_mode & FMODE_READ)) {
2576 ret = -EINVAL;
2577 break;
2578 }
2579 if (!dmabuf->ready && (val = prog_dmabuf_record(state))
2580 != 0) {
2581 ret = val;
2582 break;
2583 }
2584 spin_lock_irqsave(&state->card->lock, flags);
2585 trident_update_ptr(state);
2586 cinfo.bytes = dmabuf->total_bytes;
2587 cinfo.blocks = dmabuf->count >> dmabuf->fragshift;
2588 cinfo.ptr = dmabuf->hwptr;
2589 if (dmabuf->mapped)
2590 dmabuf->count &= dmabuf->fragsize - 1;
2591 spin_unlock_irqrestore(&state->card->lock, flags);
2592 ret = copy_to_user(argp, &cinfo, sizeof (cinfo)) ?
2593 -EFAULT : 0;
2594 break;
2595
2596 case SNDCTL_DSP_GETOPTR:
2597 if (!(file->f_mode & FMODE_WRITE)) {
2598 ret = -EINVAL;
2599 break;
2600 }
2601 if (!dmabuf->ready && (val = prog_dmabuf_playback(state))
2602 != 0) {
2603 ret = val;
2604 break;
2605 }
2606
2607 spin_lock_irqsave(&state->card->lock, flags);
2608 trident_update_ptr(state);
2609 cinfo.bytes = dmabuf->total_bytes;
2610 cinfo.blocks = dmabuf->count >> dmabuf->fragshift;
2611 cinfo.ptr = dmabuf->hwptr;
2612 if (dmabuf->mapped)
2613 dmabuf->count &= dmabuf->fragsize - 1;
2614 spin_unlock_irqrestore(&state->card->lock, flags);
2615 ret = copy_to_user(argp, &cinfo, sizeof (cinfo)) ?
2616 -EFAULT : 0;
2617 break;
2618
2619 case SNDCTL_DSP_SETDUPLEX:
2620 ret = -EINVAL;
2621 break;
2622
2623 case SNDCTL_DSP_GETODELAY:
2624 if (!(file->f_mode & FMODE_WRITE)) {
2625 ret = -EINVAL;
2626 break;
2627 }
2628 if (!dmabuf->ready && (val = prog_dmabuf_playback(state)) != 0) {
2629 ret = val;
2630 break;
2631 }
2632 spin_lock_irqsave(&state->card->lock, flags);
2633 trident_update_ptr(state);
2634 val = dmabuf->count;
2635 spin_unlock_irqrestore(&state->card->lock, flags);
2636 ret = put_user(val, p);
2637 break;
2638
2639 case SOUND_PCM_READ_RATE:
2640 ret = put_user(dmabuf->rate, p);
2641 break;
2642
2643 case SOUND_PCM_READ_CHANNELS:
2644 ret = put_user((dmabuf->fmt & TRIDENT_FMT_STEREO) ? 2 : 1,
2645 p);
2646 break;
2647
2648 case SOUND_PCM_READ_BITS:
2649 ret = put_user((dmabuf->fmt & TRIDENT_FMT_16BIT) ? AFMT_S16_LE :
2650 AFMT_U8, p);
2651 break;
2652
2653 case SNDCTL_DSP_GETCHANNELMASK:
2654 ret = put_user(DSP_BIND_FRONT | DSP_BIND_SURR |
2655 DSP_BIND_CENTER_LFE, p);
2656 break;
2657
2658 case SNDCTL_DSP_BIND_CHANNEL:
2659 if (state->card->pci_id != PCI_DEVICE_ID_SI_7018) {
2660 ret = -EINVAL;
2661 break;
2662 }
2663
2664 if (get_user(val, p)) {
2665 ret = -EFAULT;
2666 break;
2667 }
2668 if (val == DSP_BIND_QUERY) {
2669 val = dmabuf->channel->attribute | 0x3c00;
2670 val = attr2mask[val >> 8];
2671 } else {
2672 dmabuf->ready = 0;
2673 if (file->f_mode & FMODE_READ)
2674 dmabuf->channel->attribute = (CHANNEL_REC |
2675 SRC_ENABLE);
2676 if (file->f_mode & FMODE_WRITE)
2677 dmabuf->channel->attribute = (CHANNEL_SPC_PB |
2678 SRC_ENABLE);
2679 dmabuf->channel->attribute |= mask2attr[ffs(val)];
2680 }
2681 ret = put_user(val, p);
2682 break;
2683
2684 case SNDCTL_DSP_MAPINBUF:
2685 case SNDCTL_DSP_MAPOUTBUF:
2686 case SNDCTL_DSP_SETSYNCRO:
2687 case SOUND_PCM_WRITE_FILTER:
2688 case SOUND_PCM_READ_FILTER:
2689 default:
2690 ret = -EINVAL;
2691 break;
2692
2693 }
2694 return ret;
2695 }
2696
2697 static int
2698 trident_open(struct inode *inode, struct file *file)
2699 {
2700 int i = 0;
2701 int minor = iminor(inode);
2702 struct trident_card *card = devs;
2703 struct trident_state *state = NULL;
2704 struct dmabuf *dmabuf = NULL;
2705 unsigned long flags;
2706
2707 /* Added by Matt Wu 01-05-2001 */
2708 /* TODO: there's some redundacy here wrt the check below */
2709 /* for multi_use_count > 0. Should we return -EBUSY or find */
2710 /* a different card? for now, don't break current behaviour */
2711 /* -- mulix */
2712 if (file->f_mode & FMODE_READ) {
2713 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
2714 if (card->multi_channel_use_count > 0)
2715 return -EBUSY;
2716 }
2717 }
2718
2719 /* find an available virtual channel (instance of /dev/dsp) */
2720 while (card != NULL) {
2721 mutex_lock(&card->open_mutex);
2722 if (file->f_mode & FMODE_READ) {
2723 /* Skip opens on cards that are in 6 channel mode */
2724 if (card->multi_channel_use_count > 0) {
2725 mutex_unlock(&card->open_mutex);
2726 card = card->next;
2727 continue;
2728 }
2729 }
2730 for (i = 0; i < NR_HW_CH; i++) {
2731 if (card->states[i] == NULL) {
2732 state = card->states[i] = kzalloc(sizeof(*state), GFP_KERNEL);
2733 if (state == NULL) {
2734 mutex_unlock(&card->open_mutex);
2735 return -ENOMEM;
2736 }
2737 mutex_init(&state->sem);
2738 dmabuf = &state->dmabuf;
2739 goto found_virt;
2740 }
2741 }
2742 mutex_unlock(&card->open_mutex);
2743 card = card->next;
2744 }
2745 /* no more virtual channel avaiable */
2746 if (!state) {
2747 return -ENODEV;
2748 }
2749 found_virt:
2750 /* found a free virtual channel, allocate hardware channels */
2751 if (file->f_mode & FMODE_READ)
2752 dmabuf->channel = card->alloc_rec_pcm_channel(card);
2753 else
2754 dmabuf->channel = card->alloc_pcm_channel(card);
2755
2756 if (dmabuf->channel == NULL) {
2757 kfree(card->states[i]);
2758 card->states[i] = NULL;
2759 return -ENODEV;
2760 }
2761
2762 /* initialize the virtual channel */
2763 state->virt = i;
2764 state->card = card;
2765 state->magic = TRIDENT_STATE_MAGIC;
2766 init_waitqueue_head(&dmabuf->wait);
2767 file->private_data = state;
2768
2769 /* set default sample format. According to OSS Programmer's */
2770 /* Guide /dev/dsp should be default to unsigned 8-bits, mono, */
2771 /* with sample rate 8kHz and /dev/dspW will accept 16-bits sample */
2772 if (file->f_mode & FMODE_WRITE) {
2773 dmabuf->fmt &= ~TRIDENT_FMT_MASK;
2774 if ((minor & 0x0f) == SND_DEV_DSP16)
2775 dmabuf->fmt |= TRIDENT_FMT_16BIT;
2776 dmabuf->ossfragshift = 0;
2777 dmabuf->ossmaxfrags = 0;
2778 dmabuf->subdivision = 0;
2779 if (card->pci_id == PCI_DEVICE_ID_SI_7018) {
2780 /* set default channel attribute to normal playback */
2781 dmabuf->channel->attribute = CHANNEL_PB;
2782 }
2783 spin_lock_irqsave(&card->lock, flags);
2784 trident_set_dac_rate(state, 8000);
2785 spin_unlock_irqrestore(&card->lock, flags);
2786 }
2787
2788 if (file->f_mode & FMODE_READ) {
2789 /* FIXME: Trident 4d can only record in signed 16-bits stereo, */
2790 /* 48kHz sample, to be dealed with in trident_set_adc_rate() ?? */
2791 dmabuf->fmt &= ~TRIDENT_FMT_MASK;
2792 if ((minor & 0x0f) == SND_DEV_DSP16)
2793 dmabuf->fmt |= TRIDENT_FMT_16BIT;
2794 dmabuf->ossfragshift = 0;
2795 dmabuf->ossmaxfrags = 0;
2796 dmabuf->subdivision = 0;
2797 if (card->pci_id == PCI_DEVICE_ID_SI_7018) {
2798 /* set default channel attribute to 0x8a80, record from
2799 PCM L/R FIFO and mono = (left + right + 1)/2 */
2800 dmabuf->channel->attribute = (CHANNEL_REC | PCM_LR |
2801 MONO_MIX);
2802 }
2803 spin_lock_irqsave(&card->lock, flags);
2804 trident_set_adc_rate(state, 8000);
2805 spin_unlock_irqrestore(&card->lock, flags);
2806
2807 /* Added by Matt Wu 01-05-2001 */
2808 if (card->pci_id == PCI_DEVICE_ID_ALI_5451)
2809 card->rec_channel_use_count++;
2810 }
2811
2812 state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
2813 mutex_unlock(&card->open_mutex);
2814
2815 pr_debug("trident: open virtual channel %d, hard channel %d\n",
2816 state->virt, dmabuf->channel->num);
2817
2818 return nonseekable_open(inode, file);
2819 }
2820
2821 static int
2822 trident_release(struct inode *inode, struct file *file)
2823 {
2824 struct trident_state *state = (struct trident_state *)file->private_data;
2825 struct trident_card *card;
2826 struct dmabuf *dmabuf;
2827
2828 VALIDATE_STATE(state);
2829
2830 card = state->card;
2831 dmabuf = &state->dmabuf;
2832
2833 if (file->f_mode & FMODE_WRITE) {
2834 trident_clear_tail(state);
2835 drain_dac(state, file->f_flags & O_NONBLOCK);
2836 }
2837
2838 pr_debug("trident: closing virtual channel %d, hard channel %d\n",
2839 state->virt, dmabuf->channel->num);
2840
2841 /* stop DMA state machine and free DMA buffers/channels */
2842 mutex_lock(&card->open_mutex);
2843
2844 if (file->f_mode & FMODE_WRITE) {
2845 stop_dac(state);
2846 dealloc_dmabuf(&state->dmabuf, state->card->pci_dev);
2847 state->card->free_pcm_channel(state->card, dmabuf->channel->num);
2848
2849 /* Added by Matt Wu */
2850 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
2851 if (state->chans_num > 2) {
2852 if (card->multi_channel_use_count-- < 0)
2853 card->multi_channel_use_count = 0;
2854 if (card->multi_channel_use_count == 0)
2855 ali_close_multi_channels();
2856 ali_free_other_states_resources(state);
2857 }
2858 }
2859 }
2860 if (file->f_mode & FMODE_READ) {
2861 stop_adc(state);
2862 dealloc_dmabuf(&state->dmabuf, state->card->pci_dev);
2863 state->card->free_pcm_channel(state->card, dmabuf->channel->num);
2864
2865 /* Added by Matt Wu */
2866 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
2867 if (card->rec_channel_use_count-- < 0)
2868 card->rec_channel_use_count = 0;
2869 }
2870 }
2871
2872 card->states[state->virt] = NULL;
2873 kfree(state);
2874
2875 /* we're covered by the open_mutex */
2876 mutex_unlock(&card->open_mutex);
2877
2878 return 0;
2879 }
2880
2881 static /*const */ struct file_operations trident_audio_fops = {
2882 .owner = THIS_MODULE,
2883 .llseek = no_llseek,
2884 .read = trident_read,
2885 .write = trident_write,
2886 .poll = trident_poll,
2887 .ioctl = trident_ioctl,
2888 .mmap = trident_mmap,
2889 .open = trident_open,
2890 .release = trident_release,
2891 };
2892
2893 /* trident specific AC97 functions */
2894 /* Write AC97 codec registers */
2895 static void
2896 trident_ac97_set(struct ac97_codec *codec, u8 reg, u16 val)
2897 {
2898 struct trident_card *card = (struct trident_card *)codec->private_data;
2899 unsigned int address, mask, busy;
2900 unsigned short count = 0xffff;
2901 unsigned long flags;
2902 u32 data;
2903
2904 data = ((u32) val) << 16;
2905
2906 switch (card->pci_id) {
2907 default:
2908 case PCI_DEVICE_ID_SI_7018:
2909 address = SI_AC97_WRITE;
2910 mask = SI_AC97_BUSY_WRITE | SI_AC97_AUDIO_BUSY;
2911 if (codec->id)
2912 mask |= SI_AC97_SECONDARY;
2913 busy = SI_AC97_BUSY_WRITE;
2914 break;
2915 case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
2916 address = DX_ACR0_AC97_W;
2917 mask = busy = DX_AC97_BUSY_WRITE;
2918 break;
2919 case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
2920 address = NX_ACR1_AC97_W;
2921 mask = NX_AC97_BUSY_WRITE;
2922 if (codec->id)
2923 mask |= NX_AC97_WRITE_SECONDARY;
2924 busy = NX_AC97_BUSY_WRITE;
2925 break;
2926 case PCI_DEVICE_ID_INTERG_5050:
2927 address = SI_AC97_WRITE;
2928 mask = busy = SI_AC97_BUSY_WRITE;
2929 if (codec->id)
2930 mask |= SI_AC97_SECONDARY;
2931 break;
2932 }
2933
2934 spin_lock_irqsave(&card->lock, flags);
2935 do {
2936 if ((inw(TRID_REG(card, address)) & busy) == 0)
2937 break;
2938 } while (count--);
2939
2940 data |= (mask | (reg & AC97_REG_ADDR));
2941
2942 if (count == 0) {
2943 printk(KERN_ERR "trident: AC97 CODEC write timed out.\n");
2944 spin_unlock_irqrestore(&card->lock, flags);
2945 return;
2946 }
2947
2948 outl(data, TRID_REG(card, address));
2949 spin_unlock_irqrestore(&card->lock, flags);
2950 }
2951
2952 /* Read AC97 codec registers */
2953 static u16
2954 trident_ac97_get(struct ac97_codec *codec, u8 reg)
2955 {
2956 struct trident_card *card = (struct trident_card *)codec->private_data;
2957 unsigned int address, mask, busy;
2958 unsigned short count = 0xffff;
2959 unsigned long flags;
2960 u32 data;
2961
2962 switch (card->pci_id) {
2963 default:
2964 case PCI_DEVICE_ID_SI_7018:
2965 address = SI_AC97_READ;
2966 mask = SI_AC97_BUSY_READ | SI_AC97_AUDIO_BUSY;
2967 if (codec->id)
2968 mask |= SI_AC97_SECONDARY;
2969 busy = SI_AC97_BUSY_READ;
2970 break;
2971 case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
2972 address = DX_ACR1_AC97_R;
2973 mask = busy = DX_AC97_BUSY_READ;
2974 break;
2975 case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
2976 if (codec->id)
2977 address = NX_ACR3_AC97_R_SECONDARY;
2978 else
2979 address = NX_ACR2_AC97_R_PRIMARY;
2980 mask = NX_AC97_BUSY_READ;
2981 busy = NX_AC97_BUSY_READ | NX_AC97_BUSY_DATA;
2982 break;
2983 case PCI_DEVICE_ID_INTERG_5050:
2984 address = SI_AC97_READ;
2985 mask = busy = SI_AC97_BUSY_READ;
2986 if (codec->id)
2987 mask |= SI_AC97_SECONDARY;
2988 break;
2989 }
2990
2991 data = (mask | (reg & AC97_REG_ADDR));
2992
2993 spin_lock_irqsave(&card->lock, flags);
2994 outl(data, TRID_REG(card, address));
2995 do {
2996 data = inl(TRID_REG(card, address));
2997 if ((data & busy) == 0)
2998 break;
2999 } while (count--);
3000 spin_unlock_irqrestore(&card->lock, flags);
3001
3002 if (count == 0) {
3003 printk(KERN_ERR "trident: AC97 CODEC read timed out.\n");
3004 data = 0;
3005 }
3006 return ((u16) (data >> 16));
3007 }
3008
3009 /* rewrite ac97 read and write mixer register by hulei for ALI*/
3010 static int
3011 acquirecodecaccess(struct trident_card *card)
3012 {
3013 u16 wsemamask = 0x6000; /* bit 14..13 */
3014 u16 wsemabits;
3015 u16 wcontrol;
3016 int block = 0;
3017 int ncount = 25;
3018 while (1) {
3019 wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
3020 wsemabits = wcontrol & wsemamask;
3021
3022 if (wsemabits == 0x4000)
3023 return 1; /* 0x4000 is audio ,then success */
3024 if (ncount-- < 0)
3025 break;
3026 if (wsemabits == 0) {
3027 unlock:
3028 outl(((u32) (wcontrol & 0x1eff) | 0x00004000),
3029 TRID_REG(card, ALI_AC97_WRITE));
3030 continue;
3031 }
3032 udelay(20);
3033 }
3034 if (!block) {
3035 pr_debug("accesscodecsemaphore: try unlock\n");
3036 block = 1;
3037 goto unlock;
3038 }
3039 return 0;
3040 }
3041
3042 static void
3043 releasecodecaccess(struct trident_card *card)
3044 {
3045 unsigned long wcontrol;
3046 wcontrol = inl(TRID_REG(card, ALI_AC97_WRITE));
3047 outl((wcontrol & 0xffff1eff), TRID_REG(card, ALI_AC97_WRITE));
3048 }
3049
3050 static int
3051 waitforstimertick(struct trident_card *card)
3052 {
3053 unsigned long chk1, chk2;
3054 unsigned int wcount = 0xffff;
3055 chk1 = inl(TRID_REG(card, ALI_STIMER));
3056
3057 while (1) {
3058 chk2 = inl(TRID_REG(card, ALI_STIMER));
3059 if ((wcount > 0) && chk1 != chk2)
3060 return 1;
3061 if (wcount <= 0)
3062 break;
3063 udelay(50);
3064 }
3065 return 0;
3066 }
3067
3068 /* Read AC97 codec registers for ALi*/
3069 static u16
3070 ali_ac97_get(struct trident_card *card, int secondary, u8 reg)
3071 {
3072 unsigned int address, mask;
3073 unsigned int ncount;
3074 unsigned long aud_reg;
3075 u32 data;
3076 u16 wcontrol;
3077 unsigned long flags;
3078
3079 if (!card)
3080 BUG();
3081
3082 address = ALI_AC97_READ;
3083 if (card->revision == ALI_5451_V02) {
3084 address = ALI_AC97_WRITE;
3085 }
3086 mask = ALI_AC97_READ_ACTION | ALI_AC97_AUDIO_BUSY;
3087 if (secondary)
3088 mask |= ALI_AC97_SECONDARY;
3089
3090 spin_lock_irqsave(&card->lock, flags);
3091
3092 if (!acquirecodecaccess(card))
3093 printk(KERN_ERR "access codec fail\n");
3094
3095 wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
3096 wcontrol &= 0xfe00;
3097 wcontrol |= (0x8000 | reg);
3098 outw(wcontrol, TRID_REG(card, ALI_AC97_WRITE));
3099
3100 data = (mask | (reg & AC97_REG_ADDR));
3101
3102 if (!waitforstimertick(card)) {
3103 printk(KERN_ERR "ali_ac97_read: BIT_CLOCK is dead\n");
3104 goto releasecodec;
3105 }
3106
3107 udelay(20);
3108
3109 ncount = 10;
3110
3111 while (1) {
3112 if ((inw(TRID_REG(card, ALI_AC97_WRITE)) & ALI_AC97_BUSY_READ)
3113 != 0)
3114 break;
3115 if (ncount <= 0)
3116 break;
3117 if (ncount-- == 1) {
3118 pr_debug("ali_ac97_read :try clear busy flag\n");
3119 aud_reg = inl(TRID_REG(card, ALI_AC97_WRITE));
3120 outl((aud_reg & 0xffff7fff),
3121 TRID_REG(card, ALI_AC97_WRITE));
3122 }
3123 udelay(10);
3124 }
3125
3126 data = inl(TRID_REG(card, address));
3127
3128 spin_unlock_irqrestore(&card->lock, flags);
3129
3130 return ((u16) (data >> 16));
3131
3132 releasecodec:
3133 releasecodecaccess(card);
3134 spin_unlock_irqrestore(&card->lock, flags);
3135 printk(KERN_ERR "ali_ac97_read: AC97 CODEC read timed out.\n");
3136 return 0;
3137 }
3138
3139 /* Write AC97 codec registers for hulei*/
3140 static void
3141 ali_ac97_set(struct trident_card *card, int secondary, u8 reg, u16 val)
3142 {
3143 unsigned int address, mask;
3144 unsigned int ncount;
3145 u32 data;
3146 u16 wcontrol;
3147 unsigned long flags;
3148
3149 data = ((u32) val) << 16;
3150
3151 if (!card)
3152 BUG();
3153
3154 address = ALI_AC97_WRITE;
3155 mask = ALI_AC97_WRITE_ACTION | ALI_AC97_AUDIO_BUSY;
3156 if (secondary)
3157 mask |= ALI_AC97_SECONDARY;
3158 if (card->revision == ALI_5451_V02)
3159 mask |= ALI_AC97_WRITE_MIXER_REGISTER;
3160
3161 spin_lock_irqsave(&card->lock, flags);
3162 if (!acquirecodecaccess(card))
3163 printk(KERN_ERR "ali_ac97_write: access codec fail\n");
3164
3165 wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
3166 wcontrol &= 0xff00;
3167 wcontrol |= (0x8100 | reg); /* bit 8=1: (ali1535 )reserved/ */
3168 /* ali1535+ write */
3169 outl((data | wcontrol), TRID_REG(card, ALI_AC97_WRITE));
3170
3171 if (!waitforstimertick(card)) {
3172 printk(KERN_ERR "BIT_CLOCK is dead\n");
3173 goto releasecodec;
3174 }
3175
3176 ncount = 10;
3177 while (1) {
3178 wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
3179 if (!(wcontrol & 0x8000))
3180 break;
3181 if (ncount <= 0)
3182 break;
3183 if (ncount-- == 1) {
3184 pr_debug("ali_ac97_set :try clear busy flag!!\n");
3185 outw(wcontrol & 0x7fff,
3186 TRID_REG(card, ALI_AC97_WRITE));
3187 }
3188 udelay(10);
3189 }
3190
3191 releasecodec:
3192 releasecodecaccess(card);
3193 spin_unlock_irqrestore(&card->lock, flags);
3194 return;
3195 }
3196
3197 static void
3198 ali_enable_special_channel(struct trident_state *stat)
3199 {
3200 struct trident_card *card = stat->card;
3201 unsigned long s_channels;
3202
3203 s_channels = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
3204 s_channels |= (1 << stat->dmabuf.channel->num);
3205 outl(s_channels, TRID_REG(card, ALI_GLOBAL_CONTROL));
3206 }
3207
3208 static u16
3209 ali_ac97_read(struct ac97_codec *codec, u8 reg)
3210 {
3211 int id;
3212 u16 data;
3213 struct trident_card *card = NULL;
3214
3215 /* Added by Matt Wu */
3216 if (!codec)
3217 BUG();
3218
3219 card = (struct trident_card *) codec->private_data;
3220
3221 if (!card->mixer_regs_ready)
3222 return ali_ac97_get(card, codec->id, reg);
3223
3224 /*
3225 * FIXME: need to stop this caching some registers
3226 */
3227 if (codec->id)
3228 id = 1;
3229 else
3230 id = 0;
3231
3232 data = card->mixer_regs[reg / 2][id];
3233 return data;
3234 }
3235
3236 static void
3237 ali_ac97_write(struct ac97_codec *codec, u8 reg, u16 val)
3238 {
3239 int id;
3240 struct trident_card *card;
3241
3242 /* Added by Matt Wu */
3243 if (!codec)
3244 BUG();
3245
3246 card = (struct trident_card *) codec->private_data;
3247
3248 if (!card->mixer_regs_ready) {
3249 ali_ac97_set(card, codec->id, reg, val);
3250 return;
3251 }
3252
3253 if (codec->id)
3254 id = 1;
3255 else
3256 id = 0;
3257
3258 card->mixer_regs[reg / 2][id] = val;
3259 ali_ac97_set(card, codec->id, reg, val);
3260 }
3261
3262 /*
3263 flag: ALI_SPDIF_OUT_TO_SPDIF_OUT
3264 ALI_PCM_TO_SPDIF_OUT
3265 */
3266
3267 static void
3268 ali_setup_spdif_out(struct trident_card *card, int flag)
3269 {
3270 unsigned long spdif;
3271 unsigned char ch;
3272
3273 char temp;
3274 struct pci_dev *pci_dev = NULL;
3275
3276 pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
3277 pci_dev);
3278 if (pci_dev == NULL)
3279 return;
3280 pci_read_config_byte(pci_dev, 0x61, &temp);
3281 temp |= 0x40;
3282 pci_write_config_byte(pci_dev, 0x61, temp);
3283 pci_read_config_byte(pci_dev, 0x7d, &temp);
3284 temp |= 0x01;
3285 pci_write_config_byte(pci_dev, 0x7d, temp);
3286 pci_read_config_byte(pci_dev, 0x7e, &temp);
3287 temp &= (~0x20);
3288 temp |= 0x10;
3289 pci_write_config_byte(pci_dev, 0x7e, temp);
3290
3291 pci_dev_put(pci_dev);
3292
3293 ch = inb(TRID_REG(card, ALI_SCTRL));
3294 outb(ch | ALI_SPDIF_OUT_ENABLE, TRID_REG(card, ALI_SCTRL));
3295 ch = inb(TRID_REG(card, ALI_SPDIF_CTRL));
3296 outb(ch & ALI_SPDIF_OUT_CH_STATUS, TRID_REG(card, ALI_SPDIF_CTRL));
3297
3298 if (flag & ALI_SPDIF_OUT_TO_SPDIF_OUT) {
3299 spdif = inw(TRID_REG(card, ALI_GLOBAL_CONTROL));
3300 spdif |= ALI_SPDIF_OUT_CH_ENABLE;
3301 spdif &= ALI_SPDIF_OUT_SEL_SPDIF;
3302 outw(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
3303 spdif = inw(TRID_REG(card, ALI_SPDIF_CS));
3304 if (flag & ALI_SPDIF_OUT_NON_PCM)
3305 spdif |= 0x0002;
3306 else
3307 spdif &= (~0x0002);
3308 outw(spdif, TRID_REG(card, ALI_SPDIF_CS));
3309 } else {
3310 spdif = inw(TRID_REG(card, ALI_GLOBAL_CONTROL));
3311 spdif |= ALI_SPDIF_OUT_SEL_PCM;
3312 outw(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
3313 }
3314 }
3315
3316 static void
3317 ali_disable_special_channel(struct trident_card *card, int ch)
3318 {
3319 unsigned long sc;
3320
3321 sc = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
3322 sc &= ~(1 << ch);
3323 outl(sc, TRID_REG(card, ALI_GLOBAL_CONTROL));
3324 }
3325
3326 static void
3327 ali_disable_spdif_in(struct trident_card *card)
3328 {
3329 unsigned long spdif;
3330
3331 spdif = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
3332 spdif &= (~ALI_SPDIF_IN_SUPPORT);
3333 outl(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
3334
3335 ali_disable_special_channel(card, ALI_SPDIF_IN_CHANNEL);
3336 }
3337
3338 static void
3339 ali_setup_spdif_in(struct trident_card *card)
3340 {
3341 unsigned long spdif;
3342
3343 //Set SPDIF IN Supported
3344 spdif = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
3345 spdif |= ALI_SPDIF_IN_SUPPORT;
3346 outl(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
3347
3348 //Set SPDIF IN Rec
3349 spdif = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
3350 spdif |= ALI_SPDIF_IN_CH_ENABLE;
3351 outl(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
3352
3353 spdif = inb(TRID_REG(card, ALI_SPDIF_CTRL));
3354 spdif |= ALI_SPDIF_IN_CH_STATUS;
3355 outb(spdif, TRID_REG(card, ALI_SPDIF_CTRL));
3356 /*
3357 spdif = inb(TRID_REG(card, ALI_SPDIF_CTRL));
3358 spdif |= ALI_SPDIF_IN_FUNC_ENABLE;
3359 outb(spdif, TRID_REG(card, ALI_SPDIF_CTRL));
3360 */
3361 }
3362
3363 static void
3364 ali_delay(struct trident_card *card, int interval)
3365 {
3366 unsigned long begintimer, currenttimer;
3367
3368 begintimer = inl(TRID_REG(card, ALI_STIMER));
3369 currenttimer = inl(TRID_REG(card, ALI_STIMER));
3370
3371 while (currenttimer < begintimer + interval)
3372 currenttimer = inl(TRID_REG(card, ALI_STIMER));
3373 }
3374
3375 static void
3376 ali_detect_spdif_rate(struct trident_card *card)
3377 {
3378 u16 wval = 0;
3379 u16 count = 0;
3380 u8 bval = 0, R1 = 0, R2 = 0;
3381
3382 bval = inb(TRID_REG(card, ALI_SPDIF_CTRL));
3383 bval |= 0x02;
3384 outb(bval, TRID_REG(card, ALI_SPDIF_CTRL));
3385
3386 bval = inb(TRID_REG(card, ALI_SPDIF_CTRL + 1));
3387 bval |= 0x1F;
3388 outb(bval, TRID_REG(card, ALI_SPDIF_CTRL + 1));
3389
3390 while (((R1 < 0x0B) || (R1 > 0x0E)) && (R1 != 0x12) &&
3391 count <= 50000) {
3392 count++;
3393
3394 ali_delay(card, 6);
3395
3396 bval = inb(TRID_REG(card, ALI_SPDIF_CTRL + 1));
3397 R1 = bval & 0x1F;
3398 }
3399
3400 if (count > 50000) {
3401 printk(KERN_WARNING "trident: Error in "
3402 "ali_detect_spdif_rate!\n");
3403 return;
3404 }
3405
3406 count = 0;
3407
3408 while (count <= 50000) {
3409 count++;
3410
3411 ali_delay(card, 6);
3412
3413 bval = inb(TRID_REG(card, ALI_SPDIF_CTRL + 1));
3414 R2 = bval & 0x1F;
3415
3416 if (R2 != R1)
3417 R1 = R2;
3418 else
3419 break;
3420 }
3421
3422 if (count > 50000) {
3423 printk(KERN_WARNING "trident: Error in "
3424 "ali_detect_spdif_rate!\n");
3425 return;
3426 }
3427
3428 switch (R2) {
3429 case 0x0b:
3430 case 0x0c:
3431 case 0x0d:
3432 case 0x0e:
3433 wval = inw(TRID_REG(card, ALI_SPDIF_CTRL + 2));
3434 wval &= 0xE0F0;
3435 wval |= (u16) 0x09 << 8 | (u16) 0x05;
3436 outw(wval, TRID_REG(card, ALI_SPDIF_CTRL + 2));
3437
3438 bval = inb(TRID_REG(card, ALI_SPDIF_CS + 3)) & 0xF0;
3439 outb(bval | 0x02, TRID_REG(card, ALI_SPDIF_CS + 3));
3440 break;
3441
3442 case 0x12:
3443 wval = inw(TRID_REG(card, ALI_SPDIF_CTRL + 2));
3444 wval &= 0xE0F0;
3445 wval |= (u16) 0x0E << 8 | (u16) 0x08;
3446 outw(wval, TRID_REG(card, ALI_SPDIF_CTRL + 2));
3447
3448 bval = inb(TRID_REG(card, ALI_SPDIF_CS + 3)) & 0xF0;
3449 outb(bval | 0x03, TRID_REG(card, ALI_SPDIF_CS + 3));
3450 break;
3451
3452 default:
3453 break;
3454 }
3455
3456 }
3457
3458 static unsigned int
3459 ali_get_spdif_in_rate(struct trident_card *card)
3460 {
3461 u32 dwRate = 0;
3462 u8 bval = 0;
3463
3464 ali_detect_spdif_rate(card);
3465
3466 bval = inb(TRID_REG(card, ALI_SPDIF_CTRL));
3467 bval &= 0x7F;
3468 bval |= 0x40;
3469 outb(bval, TRID_REG(card, ALI_SPDIF_CTRL));
3470
3471 bval = inb(TRID_REG(card, ALI_SPDIF_CS + 3));
3472 bval &= 0x0F;
3473
3474 switch (bval) {
3475 case 0:
3476 dwRate = 44100;
3477 break;
3478 case 1:
3479 dwRate = 48000;
3480 break;
3481 case 2:
3482 dwRate = 32000;
3483 break;
3484 default:
3485 // Error occurs
3486 break;
3487 }
3488
3489 return dwRate;
3490
3491 }
3492
3493 static int
3494 ali_close_multi_channels(void)
3495 {
3496 char temp = 0;
3497 struct pci_dev *pci_dev = NULL;
3498
3499 pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
3500 pci_dev);
3501 if (pci_dev == NULL)
3502 return -1;
3503
3504 pci_read_config_byte(pci_dev, 0x59, &temp);
3505 temp &= ~0x80;
3506 pci_write_config_byte(pci_dev, 0x59, temp);
3507
3508 pci_dev_put(pci_dev);
3509
3510 pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101,
3511 NULL);
3512 if (pci_dev == NULL)
3513 return -1;
3514
3515 pci_read_config_byte(pci_dev, 0xB8, &temp);
3516 temp &= ~0x20;
3517 pci_write_config_byte(pci_dev, 0xB8, temp);
3518
3519 pci_dev_put(pci_dev);
3520
3521 return 0;
3522 }
3523
3524 static int
3525 ali_setup_multi_channels(struct trident_card *card, int chan_nums)
3526 {
3527 unsigned long dwValue;
3528 char temp = 0;
3529 struct pci_dev *pci_dev = NULL;
3530
3531 pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
3532 pci_dev);
3533 if (pci_dev == NULL)
3534 return -1;
3535 pci_read_config_byte(pci_dev, 0x59, &temp);
3536 temp |= 0x80;
3537 pci_write_config_byte(pci_dev, 0x59, temp);
3538
3539 pci_dev_put(pci_dev);
3540
3541 pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101,
3542 NULL);
3543 if (pci_dev == NULL)
3544 return -1;
3545 pci_read_config_byte(pci_dev, (int) 0xB8, &temp);
3546 temp |= 0x20;
3547 pci_write_config_byte(pci_dev, (int) 0xB8, (u8) temp);
3548
3549 pci_dev_put(pci_dev);
3550
3551 if (chan_nums == 6) {
3552 dwValue = inl(TRID_REG(card, ALI_SCTRL)) | 0x000f0000;
3553 outl(dwValue, TRID_REG(card, ALI_SCTRL));
3554 mdelay(4);
3555 dwValue = inl(TRID_REG(card, ALI_SCTRL));
3556 if (dwValue & 0x2000000) {
3557 ali_ac97_write(card->ac97_codec[0], 0x02, 8080);
3558 ali_ac97_write(card->ac97_codec[0], 0x36, 0);
3559 ali_ac97_write(card->ac97_codec[0], 0x38, 0);
3560 /*
3561 * On a board with a single codec you won't get the
3562 * surround. On other boards configure it.
3563 */
3564 if (card->ac97_codec[1] != NULL) {
3565 ali_ac97_write(card->ac97_codec[1], 0x36, 0);
3566 ali_ac97_write(card->ac97_codec[1], 0x38, 0);
3567 ali_ac97_write(card->ac97_codec[1], 0x02, 0x0606);
3568 ali_ac97_write(card->ac97_codec[1], 0x18, 0x0303);
3569 ali_ac97_write(card->ac97_codec[1], 0x74, 0x3);
3570 }
3571 return 1;
3572 }
3573 }
3574 return -EINVAL;
3575 }
3576
3577 static void
3578 ali_free_pcm_channel(struct trident_card *card, unsigned int channel)
3579 {
3580 int bank;
3581
3582 if (channel > 31)
3583 return;
3584
3585 bank = channel >> 5;
3586 channel = channel & 0x1f;
3587
3588 card->banks[bank].bitmap &= ~(1 << (channel));
3589 }
3590
3591 static int
3592 ali_allocate_other_states_resources(struct trident_state *state, int chan_nums)
3593 {
3594 struct trident_card *card = state->card;
3595 struct trident_state *s;
3596 int i, state_count = 0;
3597 struct trident_pcm_bank *bank;
3598 struct trident_channel *channel;
3599 unsigned long num;
3600
3601 bank = &card->banks[BANK_A];
3602
3603 if (chan_nums != 6)
3604 return 0;
3605
3606 for (i = 0; (i < ALI_CHANNELS) && (state_count != 4); i++) {
3607 if (card->states[i])
3608 continue;
3609
3610 num = ali_multi_channels_5_1[state_count];
3611 if (!(bank->bitmap & (1 << num))) {
3612 bank->bitmap |= 1 << num;
3613 channel = &bank->channels[num];
3614 channel->num = num;
3615 } else {
3616 state_count--;
3617 for (; state_count >= 0; state_count--) {
3618 kfree(state->other_states[state_count]);
3619 num = ali_multi_channels_5_1[state_count];
3620 ali_free_pcm_channel(card, num);
3621 }
3622 return -EBUSY;
3623 }
3624 s = card->states[i] = kzalloc(sizeof(*state), GFP_KERNEL);
3625 if (!s) {
3626 num = ali_multi_channels_5_1[state_count];
3627 ali_free_pcm_channel(card, num);
3628 state_count--;
3629 for (; state_count >= 0; state_count--) {
3630 num = ali_multi_channels_5_1[state_count];
3631 ali_free_pcm_channel(card, num);
3632 kfree(state->other_states[state_count]);
3633 }
3634 return -ENOMEM;
3635 }
3636
3637 s->dmabuf.channel = channel;
3638 s->dmabuf.ossfragshift = s->dmabuf.ossmaxfrags =
3639 s->dmabuf.subdivision = 0;
3640 init_waitqueue_head(&s->dmabuf.wait);
3641 s->magic = card->magic;
3642 s->card = card;
3643 s->virt = i;
3644 ali_enable_special_channel(s);
3645 state->other_states[state_count++] = s;
3646 }
3647
3648 if (state_count != 4) {
3649 state_count--;
3650 for (; state_count >= 0; state_count--) {
3651 kfree(state->other_states[state_count]);
3652 num = ali_multi_channels_5_1[state_count];
3653 ali_free_pcm_channel(card, num);
3654 }
3655 return -EBUSY;
3656 }
3657 return 0;
3658 }
3659
3660 #ifdef CONFIG_PM
3661 /* save registers for ALi Power Management */
3662 static struct ali_saved_registers {
3663 unsigned long global_regs[ALI_GLOBAL_REGS];
3664 unsigned long channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
3665 unsigned mixer_regs[ALI_MIXER_REGS];
3666 } ali_registers;
3667
3668 static void
3669 ali_save_regs(struct trident_card *card)
3670 {
3671 unsigned long flags;
3672 int i, j;
3673
3674 spin_lock_irqsave(&card->lock, flags);
3675
3676 ali_registers.global_regs[0x2c] = inl(TRID_REG(card, T4D_MISCINT));
3677 //ali_registers.global_regs[0x20] = inl(TRID_REG(card,T4D_START_A));
3678 ali_registers.global_regs[0x21] = inl(TRID_REG(card, T4D_STOP_A));
3679
3680 //disable all IRQ bits
3681 outl(ALI_DISABLE_ALL_IRQ, TRID_REG(card, T4D_MISCINT));
3682
3683 for (i = 1; i < ALI_MIXER_REGS; i++)
3684 ali_registers.mixer_regs[i] = ali_ac97_read(card->ac97_codec[0],
3685 i * 2);
3686
3687 for (i = 0; i < ALI_GLOBAL_REGS; i++) {
3688 if ((i * 4 == T4D_MISCINT) || (i * 4 == T4D_STOP_A))
3689 continue;
3690 ali_registers.global_regs[i] = inl(TRID_REG(card, i * 4));
3691 }
3692
3693 for (i = 0; i < ALI_CHANNELS; i++) {
3694 outb(i, TRID_REG(card, T4D_LFO_GC_CIR));
3695 for (j = 0; j < ALI_CHANNEL_REGS; j++)
3696 ali_registers.channel_regs[i][j] = inl(TRID_REG(card,
3697 j * 4 + 0xe0));
3698 }
3699
3700 //Stop all HW channel
3701 outl(ALI_STOP_ALL_CHANNELS, TRID_REG(card, T4D_STOP_A));
3702
3703 spin_unlock_irqrestore(&card->lock, flags);
3704 }
3705
3706 static void
3707 ali_restore_regs(struct trident_card *card)
3708 {
3709 unsigned long flags;
3710 int i, j;
3711
3712 spin_lock_irqsave(&card->lock, flags);
3713
3714 for (i = 1; i < ALI_MIXER_REGS; i++)
3715 ali_ac97_write(card->ac97_codec[0], i * 2,
3716 ali_registers.mixer_regs[i]);
3717
3718 for (i = 0; i < ALI_CHANNELS; i++) {
3719 outb(i, TRID_REG(card, T4D_LFO_GC_CIR));
3720 for (j = 0; j < ALI_CHANNEL_REGS; j++)
3721 outl(ali_registers.channel_regs[i][j],
3722 TRID_REG(card, j * 4 + 0xe0));
3723 }
3724
3725 for (i = 0; i < ALI_GLOBAL_REGS; i++) {
3726 if ((i * 4 == T4D_MISCINT) || (i * 4 == T4D_STOP_A) ||
3727 (i * 4 == T4D_START_A))
3728 continue;
3729 outl(ali_registers.global_regs[i], TRID_REG(card, i * 4));
3730 }
3731
3732 //start HW channel
3733 outl(ali_registers.global_regs[0x20], TRID_REG(card, T4D_START_A));
3734 //restore IRQ enable bits
3735 outl(ali_registers.global_regs[0x2c], TRID_REG(card, T4D_MISCINT));
3736
3737 spin_unlock_irqrestore(&card->lock, flags);
3738 }
3739
3740 static int
3741 trident_suspend(struct pci_dev *dev, pm_message_t unused)
3742 {
3743 struct trident_card *card = pci_get_drvdata(dev);
3744
3745 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
3746 ali_save_regs(card);
3747 }
3748 return 0;
3749 }
3750
3751 static int
3752 trident_resume(struct pci_dev *dev)
3753 {
3754 struct trident_card *card = pci_get_drvdata(dev);
3755
3756 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
3757 ali_restore_regs(card);
3758 }
3759 return 0;
3760 }
3761 #endif
3762
3763 static struct trident_channel *
3764 ali_alloc_pcm_channel(struct trident_card *card)
3765 {
3766 struct trident_pcm_bank *bank;
3767 int idx;
3768
3769 bank = &card->banks[BANK_A];
3770
3771 if (inl(TRID_REG(card, ALI_GLOBAL_CONTROL)) &
3772 (ALI_SPDIF_OUT_CH_ENABLE)) {
3773 idx = ALI_SPDIF_OUT_CHANNEL;
3774 if (!(bank->bitmap & (1 << idx))) {
3775 struct trident_channel *channel = &bank->channels[idx];
3776 bank->bitmap |= 1 << idx;
3777 channel->num = idx;
3778 return channel;
3779 }
3780 }
3781
3782 for (idx = ALI_PCM_OUT_CHANNEL_FIRST; idx <= ALI_PCM_OUT_CHANNEL_LAST;
3783 idx++) {
3784 if (!(bank->bitmap & (1 << idx))) {
3785 struct trident_channel *channel = &bank->channels[idx];
3786 bank->bitmap |= 1 << idx;
3787 channel->num = idx;
3788 return channel;
3789 }
3790 }
3791
3792 /* no more free channels avaliable */
3793 #if 0
3794 printk(KERN_ERR "ali: no more channels available on Bank A.\n");
3795 #endif /* 0 */
3796 return NULL;
3797 }
3798
3799 static struct trident_channel *
3800 ali_alloc_rec_pcm_channel(struct trident_card *card)
3801 {
3802 struct trident_pcm_bank *bank;
3803 int idx;
3804
3805 if (inl(TRID_REG(card, ALI_GLOBAL_CONTROL)) & ALI_SPDIF_IN_SUPPORT)
3806 idx = ALI_SPDIF_IN_CHANNEL;
3807 else
3808 idx = ALI_PCM_IN_CHANNEL;
3809
3810 bank = &card->banks[BANK_A];
3811
3812 if (!(bank->bitmap & (1 << idx))) {
3813 struct trident_channel *channel = &bank->channels[idx];
3814 bank->bitmap |= 1 << idx;
3815 channel->num = idx;
3816 return channel;
3817 }
3818
3819 /* no free recordable channels avaliable */
3820 #if 0
3821 printk(KERN_ERR "ali: no recordable channels available on Bank A.\n");
3822 #endif /* 0 */
3823 return NULL;
3824 }
3825
3826 static void
3827 ali_set_spdif_out_rate(struct trident_card *card, unsigned int rate)
3828 {
3829 unsigned char ch_st_sel;
3830 unsigned short status_rate;
3831
3832 switch (rate) {
3833 case 44100:
3834 status_rate = 0;
3835 break;
3836 case 32000:
3837 status_rate = 0x300;
3838 break;
3839 case 48000:
3840 default:
3841 status_rate = 0x200;
3842 break;
3843 }
3844
3845 /* select spdif_out */
3846 ch_st_sel = inb(TRID_REG(card, ALI_SPDIF_CTRL)) & ALI_SPDIF_OUT_CH_STATUS;
3847
3848 ch_st_sel |= 0x80; /* select right */
3849 outb(ch_st_sel, TRID_REG(card, ALI_SPDIF_CTRL));
3850 outb(status_rate | 0x20, TRID_REG(card, ALI_SPDIF_CS + 2));
3851
3852 ch_st_sel &= (~0x80); /* select left */
3853 outb(ch_st_sel, TRID_REG(card, ALI_SPDIF_CTRL));
3854 outw(status_rate | 0x10, TRID_REG(card, ALI_SPDIF_CS + 2));
3855 }
3856
3857 static void
3858 ali_address_interrupt(struct trident_card *card)
3859 {
3860 int i, channel;
3861 struct trident_state *state;
3862 u32 mask, channel_mask;
3863
3864 mask = trident_get_interrupt_mask(card, 0);
3865 for (i = 0; i < NR_HW_CH; i++) {
3866 if ((state = card->states[i]) == NULL)
3867 continue;
3868 channel = state->dmabuf.channel->num;
3869 if ((channel_mask = 1 << channel) & mask) {
3870 mask &= ~channel_mask;
3871 trident_ack_channel_interrupt(card, channel);
3872 udelay(100);
3873 state->dmabuf.update_flag |= ALI_ADDRESS_INT_UPDATE;
3874 trident_update_ptr(state);
3875 }
3876 }
3877 if (mask) {
3878 for (i = 0; i < NR_HW_CH; i++) {
3879 if (mask & (1 << i)) {
3880 printk("ali: spurious channel irq %d.\n", i);
3881 trident_ack_channel_interrupt(card, i);
3882 trident_stop_voice(card, i);
3883 trident_disable_voice_irq(card, i);
3884 }
3885 }
3886 }
3887 }
3888
3889 /* Updating the values of counters of other_states' DMAs without lock
3890 protection is no harm because all DMAs of multi-channels and interrupt
3891 depend on a master state's DMA, and changing the counters of the master
3892 state DMA is protected by a spinlock.
3893 */
3894 static int
3895 ali_write_5_1(struct trident_state *state, const char __user *buf,
3896 int cnt_for_multi_channel, unsigned int *copy_count,
3897 unsigned int *state_cnt)
3898 {
3899
3900 struct dmabuf *dmabuf = &state->dmabuf;
3901 struct dmabuf *dmabuf_temp;
3902 const char __user *buffer = buf;
3903 unsigned swptr, other_dma_nums, sample_s;
3904 unsigned int i, loop;
3905
3906 other_dma_nums = 4;
3907 sample_s = sample_size[dmabuf->fmt] >> 1;
3908 swptr = dmabuf->swptr;
3909
3910 if ((i = state->multi_channels_adjust_count) > 0) {
3911 if (i == 1) {
3912 if (copy_from_user(dmabuf->rawbuf + swptr,
3913 buffer, sample_s))
3914 return -EFAULT;
3915 seek_offset(swptr, buffer, cnt_for_multi_channel,
3916 sample_s, *copy_count);
3917 i--;
3918 (*state_cnt) += sample_s;
3919 state->multi_channels_adjust_count++;
3920 } else
3921 i = i - (state->chans_num - other_dma_nums);
3922 for (; (i < other_dma_nums) && (cnt_for_multi_channel > 0); i++) {
3923 dmabuf_temp = &state->other_states[i]->dmabuf;
3924 if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
3925 buffer, sample_s))
3926 return -EFAULT;
3927 seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
3928 sample_s, *copy_count);
3929 }
3930 if (cnt_for_multi_channel == 0)
3931 state->multi_channels_adjust_count += i;
3932 }
3933 if (cnt_for_multi_channel > 0) {
3934 loop = cnt_for_multi_channel / (state->chans_num * sample_s);
3935 for (i = 0; i < loop; i++) {
3936 if (copy_from_user(dmabuf->rawbuf + swptr, buffer,
3937 sample_s * 2))
3938 return -EFAULT;
3939 seek_offset(swptr, buffer, cnt_for_multi_channel,
3940 sample_s * 2, *copy_count);
3941 (*state_cnt) += (sample_s * 2);
3942
3943 dmabuf_temp = &state->other_states[0]->dmabuf;
3944 if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
3945 buffer, sample_s))
3946 return -EFAULT;
3947 seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
3948 sample_s, *copy_count);
3949
3950 dmabuf_temp = &state->other_states[1]->dmabuf;
3951 if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
3952 buffer, sample_s))
3953 return -EFAULT;
3954 seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
3955 sample_s, *copy_count);
3956
3957 dmabuf_temp = &state->other_states[2]->dmabuf;
3958 if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
3959 buffer, sample_s))
3960 return -EFAULT;
3961 seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
3962 sample_s, *copy_count);
3963
3964 dmabuf_temp = &state->other_states[3]->dmabuf;
3965 if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
3966 buffer, sample_s))
3967 return -EFAULT;
3968 seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
3969 sample_s, *copy_count);
3970 }
3971
3972 if (cnt_for_multi_channel > 0) {
3973 state->multi_channels_adjust_count = cnt_for_multi_channel / sample_s;
3974
3975 if (copy_from_user(dmabuf->rawbuf + swptr, buffer, sample_s))
3976 return -EFAULT;
3977 seek_offset(swptr, buffer, cnt_for_multi_channel,
3978 sample_s, *copy_count);
3979 (*state_cnt) += sample_s;
3980
3981 if (cnt_for_multi_channel > 0) {
3982 if (copy_from_user(dmabuf->rawbuf + swptr,
3983 buffer, sample_s))
3984 return -EFAULT;
3985 seek_offset(swptr, buffer, cnt_for_multi_channel,
3986 sample_s, *copy_count);
3987 (*state_cnt) += sample_s;
3988
3989 if (cnt_for_multi_channel > 0) {
3990 int diff = state->chans_num - other_dma_nums;
3991 loop = state->multi_channels_adjust_count - diff;
3992 for (i = 0; i < loop; i++) {
3993 dmabuf_temp = &state->other_states[i]->dmabuf;
3994 if (copy_from_user(dmabuf_temp->rawbuf +
3995 dmabuf_temp->swptr,
3996 buffer, sample_s))
3997 return -EFAULT;
3998 seek_offset(dmabuf_temp->swptr, buffer,
3999 cnt_for_multi_channel,
4000 sample_s, *copy_count);
4001 }
4002 }
4003 }
4004 } else
4005 state->multi_channels_adjust_count = 0;
4006 }
4007 for (i = 0; i < other_dma_nums; i++) {
4008 dmabuf_temp = &state->other_states[i]->dmabuf;
4009 dmabuf_temp->swptr = dmabuf_temp->swptr % dmabuf_temp->dmasize;
4010 }
4011 return *state_cnt;
4012 }
4013
4014 static void
4015 ali_free_other_states_resources(struct trident_state *state)
4016 {
4017 int i;
4018 struct trident_card *card = state->card;
4019 struct trident_state *s;
4020 unsigned other_states_count;
4021
4022 other_states_count = state->chans_num - 2; /* except PCM L/R channels */
4023 for (i = 0; i < other_states_count; i++) {
4024 s = state->other_states[i];
4025 dealloc_dmabuf(&s->dmabuf, card->pci_dev);
4026 ali_disable_special_channel(s->card, s->dmabuf.channel->num);
4027 state->card->free_pcm_channel(s->card, s->dmabuf.channel->num);
4028 card->states[s->virt] = NULL;
4029 kfree(s);
4030 }
4031 }
4032
4033 static struct proc_dir_entry *res;
4034
4035 static int
4036 ali_write_proc(struct file *file, const char __user *buffer, unsigned long count, void *data)
4037 {
4038 struct trident_card *card = (struct trident_card *) data;
4039 unsigned long flags;
4040 char c;
4041
4042 if (count < 0)
4043 return -EINVAL;
4044 if (count == 0)
4045 return 0;
4046 if (get_user(c, buffer))
4047 return -EFAULT;
4048
4049 spin_lock_irqsave(&card->lock, flags);
4050 switch (c) {
4051 case '0':
4052 ali_setup_spdif_out(card, ALI_PCM_TO_SPDIF_OUT);
4053 ali_disable_special_channel(card, ALI_SPDIF_OUT_CHANNEL);
4054 break;
4055 case '1':
4056 ali_setup_spdif_out(card, ALI_SPDIF_OUT_TO_SPDIF_OUT |
4057 ALI_SPDIF_OUT_PCM);
4058 break;
4059 case '2':
4060 ali_setup_spdif_out(card, ALI_SPDIF_OUT_TO_SPDIF_OUT |
4061 ALI_SPDIF_OUT_NON_PCM);
4062 break;
4063 case '3':
4064 ali_disable_spdif_in(card); //default
4065 break;
4066 case '4':
4067 ali_setup_spdif_in(card);
4068 break;
4069 }
4070 spin_unlock_irqrestore(&card->lock, flags);
4071
4072 return count;
4073 }
4074
4075 /* OSS /dev/mixer file operation methods */
4076 static int
4077 trident_open_mixdev(struct inode *inode, struct file *file)
4078 {
4079 int i = 0;
4080 int minor = iminor(inode);
4081 struct trident_card *card = devs;
4082
4083 for (card = devs; card != NULL; card = card->next)
4084 for (i = 0; i < NR_AC97; i++)
4085 if (card->ac97_codec[i] != NULL &&
4086 card->ac97_codec[i]->dev_mixer == minor)
4087 goto match;
4088
4089 if (!card) {
4090 return -ENODEV;
4091 }
4092 match:
4093 file->private_data = card->ac97_codec[i];
4094
4095 return nonseekable_open(inode, file);
4096 }
4097
4098 static int
4099 trident_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd,
4100 unsigned long arg)
4101 {
4102 struct ac97_codec *codec = (struct ac97_codec *) file->private_data;
4103
4104 return codec->mixer_ioctl(codec, cmd, arg);
4105 }
4106
4107 static /*const */ struct file_operations trident_mixer_fops = {
4108 .owner = THIS_MODULE,
4109 .llseek = no_llseek,
4110 .ioctl = trident_ioctl_mixdev,
4111 .open = trident_open_mixdev,
4112 };
4113
4114 static int
4115 ali_reset_5451(struct trident_card *card)
4116 {
4117 struct pci_dev *pci_dev = NULL;
4118 unsigned int dwVal;
4119 unsigned short wCount, wReg;
4120
4121 pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
4122 pci_dev);
4123 if (pci_dev == NULL)
4124 return -1;
4125
4126 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
4127 pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
4128 udelay(5000);
4129 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
4130 pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
4131 udelay(5000);
4132 pci_dev_put(pci_dev);
4133
4134 pci_dev = card->pci_dev;
4135 if (pci_dev == NULL)
4136 return -1;
4137
4138 pci_read_config_dword(pci_dev, 0x44, &dwVal);
4139 pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
4140 udelay(500);
4141 pci_read_config_dword(pci_dev, 0x44, &dwVal);
4142 pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
4143 udelay(5000);
4144
4145 /* TODO: recognize if we have a PM capable codec and only do this */
4146 /* if the codec is PM capable */
4147 wCount = 2000;
4148 while (wCount--) {
4149 wReg = ali_ac97_get(card, 0, AC97_POWER_CONTROL);
4150 if ((wReg & 0x000f) == 0x000f)
4151 return 0;
4152 udelay(5000);
4153 }
4154 /* This is non fatal if you have a non PM capable codec.. */
4155 return 0;
4156 }
4157
4158 /* AC97 codec initialisation. */
4159 static int __devinit
4160 trident_ac97_init(struct trident_card *card)
4161 {
4162 int num_ac97 = 0;
4163 unsigned long ready_2nd = 0;
4164 struct ac97_codec *codec;
4165 int i = 0;
4166
4167 /* initialize controller side of AC link, and find out if secondary codes
4168 really exist */
4169 switch (card->pci_id) {
4170 case PCI_DEVICE_ID_ALI_5451:
4171 if (ali_reset_5451(card)) {
4172 printk(KERN_ERR "trident_ac97_init: error "
4173 "resetting 5451.\n");
4174 return -1;
4175 }
4176 outl(0x80000001, TRID_REG(card, ALI_GLOBAL_CONTROL));
4177 outl(0x00000000, TRID_REG(card, T4D_AINTEN_A));
4178 outl(0xffffffff, TRID_REG(card, T4D_AINT_A));
4179 outl(0x00000000, TRID_REG(card, T4D_MUSICVOL_WAVEVOL));
4180 outb(0x10, TRID_REG(card, ALI_MPUR2));
4181 ready_2nd = inl(TRID_REG(card, ALI_SCTRL));
4182 ready_2nd &= 0x3fff;
4183 outl(ready_2nd | PCMOUT | 0x8000, TRID_REG(card, ALI_SCTRL));
4184 ready_2nd = inl(TRID_REG(card, ALI_SCTRL));
4185 ready_2nd &= SI_AC97_SECONDARY_READY;
4186 if (card->revision < ALI_5451_V02)
4187 ready_2nd = 0;
4188 break;
4189 case PCI_DEVICE_ID_SI_7018:
4190 /* disable AC97 GPIO interrupt */
4191 outl(0x00, TRID_REG(card, SI_AC97_GPIO));
4192 /* when power up the AC link is in cold reset mode so stop it */
4193 outl(PCMOUT | SURROUT | CENTEROUT | LFEOUT | SECONDARY_ID,
4194 TRID_REG(card, SI_SERIAL_INTF_CTRL));
4195 /* it take a long time to recover from a cold reset */
4196 /* (especially when you have more than one codec) */
4197 udelay(2000);
4198 ready_2nd = inl(TRID_REG(card, SI_SERIAL_INTF_CTRL));
4199 ready_2nd &= SI_AC97_SECONDARY_READY;
4200 break;
4201 case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
4202 /* playback on */
4203 outl(DX_AC97_PLAYBACK, TRID_REG(card, DX_ACR2_AC97_COM_STAT));
4204 break;
4205 case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
4206 /* enable AC97 Output Slot 3,4 (PCM Left/Right Playback) */
4207 outl(NX_AC97_PCM_OUTPUT, TRID_REG(card, NX_ACR0_AC97_COM_STAT));
4208 ready_2nd = inl(TRID_REG(card, NX_ACR0_AC97_COM_STAT));
4209 ready_2nd &= NX_AC97_SECONDARY_READY;
4210 break;
4211 case PCI_DEVICE_ID_INTERG_5050:
4212 /* disable AC97 GPIO interrupt */
4213 outl(0x00, TRID_REG(card, SI_AC97_GPIO));
4214 /* when power up, the AC link is in cold reset mode, so stop it */
4215 outl(PCMOUT | SURROUT | CENTEROUT | LFEOUT,
4216 TRID_REG(card, SI_SERIAL_INTF_CTRL));
4217 /* it take a long time to recover from a cold reset (especially */
4218 /* when you have more than one codec) */
4219 udelay(2000);
4220 ready_2nd = inl(TRID_REG(card, SI_SERIAL_INTF_CTRL));
4221 ready_2nd &= SI_AC97_SECONDARY_READY;
4222 break;
4223 }
4224
4225 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
4226 if ((codec = ac97_alloc_codec()) == NULL)
4227 return -ENOMEM;
4228
4229 /* initialize some basic codec information, other fields */
4230 /* will be filled in ac97_probe_codec */
4231 codec->private_data = card;
4232 codec->id = num_ac97;
4233
4234 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
4235 codec->codec_read = ali_ac97_read;
4236 codec->codec_write = ali_ac97_write;
4237 } else {
4238 codec->codec_read = trident_ac97_get;
4239 codec->codec_write = trident_ac97_set;
4240 }
4241
4242 if (ac97_probe_codec(codec) == 0)
4243 break;
4244
4245 codec->dev_mixer = register_sound_mixer(&trident_mixer_fops, -1);
4246 if (codec->dev_mixer < 0) {
4247 printk(KERN_ERR "trident: couldn't register mixer!\n");
4248 ac97_release_codec(codec);
4249 break;
4250 }
4251
4252 card->ac97_codec[num_ac97] = codec;
4253
4254 /* if there is no secondary codec at all, don't probe any more */
4255 if (!ready_2nd)
4256 break;
4257 }
4258
4259 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
4260 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
4261 if (card->ac97_codec[num_ac97] == NULL)
4262 break;
4263 for (i = 0; i < 64; i++) {
4264 u16 reg = ali_ac97_get(card, num_ac97, i * 2);
4265 card->mixer_regs[i][num_ac97] = reg;
4266 }
4267 }
4268 }
4269 return num_ac97 + 1;
4270 }
4271
4272 #ifdef SUPPORT_JOYSTICK
4273 /* Gameport functions for the cards ADC gameport */
4274
4275 static unsigned char trident_game_read(struct gameport *gameport)
4276 {
4277 struct trident_card *card = gameport->port_data;
4278
4279 return inb(TRID_REG(card, T4D_GAME_LEG));
4280 }
4281
4282 static void trident_game_trigger(struct gameport *gameport)
4283 {
4284 struct trident_card *card = gameport->port_data;
4285
4286 outb(0xff, TRID_REG(card, T4D_GAME_LEG));
4287 }
4288
4289 static int trident_game_cooked_read(struct gameport *gameport,
4290 int *axes, int *buttons)
4291 {
4292 struct trident_card *card = gameport->port_data;
4293 int i;
4294
4295 *buttons = (~inb(TRID_REG(card, T4D_GAME_LEG)) >> 4) & 0xf;
4296
4297 for (i = 0; i < 4; i++) {
4298 axes[i] = inw(TRID_REG(card, T4D_GAME_AXD) + i * sizeof (u16));
4299 if (axes[i] == 0xffff)
4300 axes[i] = -1;
4301 }
4302
4303 return 0;
4304 }
4305
4306 static int trident_game_open(struct gameport *gameport, int mode)
4307 {
4308 struct trident_card *card = gameport->port_data;
4309
4310 switch (mode) {
4311 case GAMEPORT_MODE_COOKED:
4312 outb(0x80, TRID_REG(card, T4D_GAME_CR));
4313 msleep(20);
4314 return 0;
4315 case GAMEPORT_MODE_RAW:
4316 outb(0x00, TRID_REG(card, T4D_GAME_CR));
4317 return 0;
4318 default:
4319 return -1;
4320 }
4321
4322 return 0;
4323 }
4324
4325 static int __devinit trident_register_gameport(struct trident_card *card)
4326 {
4327 struct gameport *gp;
4328
4329 card->gameport = gp = gameport_allocate_port();
4330 if (!gp) {
4331 printk(KERN_ERR "trident: can not allocate memory for gameport\n");
4332 return -ENOMEM;
4333 }
4334
4335 gameport_set_name(gp, "Trident 4DWave");
4336 gameport_set_phys(gp, "pci%s/gameport0", pci_name(card->pci_dev));
4337 gp->read = trident_game_read;
4338 gp->trigger = trident_game_trigger;
4339 gp->cooked_read = trident_game_cooked_read;
4340 gp->open = trident_game_open;
4341 gp->fuzz = 64;
4342 gp->port_data = card;
4343
4344 gameport_register_port(gp);
4345
4346 return 0;
4347 }
4348
4349 static inline void trident_unregister_gameport(struct trident_card *card)
4350 {
4351 if (card->gameport)
4352 gameport_unregister_port(card->gameport);
4353 }
4354
4355 #else
4356 static inline int trident_register_gameport(struct trident_card *card) { return -ENOSYS; }
4357 static inline void trident_unregister_gameport(struct trident_card *card) { }
4358 #endif /* SUPPORT_JOYSTICK */
4359
4360 /* install the driver, we do not allocate hardware channel nor DMA buffer */
4361 /* now, they are defered until "ACCESS" time (in prog_dmabuf called by */
4362 /* open/read/write/ioctl/mmap) */
4363 static int __devinit
4364 trident_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
4365 {
4366 unsigned long iobase;
4367 struct trident_card *card;
4368 u8 bits;
4369 u8 revision;
4370 int i = 0;
4371 u16 temp;
4372 struct pci_dev *pci_dev_m1533 = NULL;
4373 int rc = -ENODEV;
4374 u64 dma_mask;
4375
4376 if (pci_enable_device(pci_dev))
4377 goto out;
4378
4379 if (pci_dev->device == PCI_DEVICE_ID_ALI_5451)
4380 dma_mask = ALI_DMA_MASK;
4381 else
4382 dma_mask = TRIDENT_DMA_MASK;
4383 if (pci_set_dma_mask(pci_dev, dma_mask)) {
4384 printk(KERN_ERR "trident: architecture does not support"
4385 " %s PCI busmaster DMA\n",
4386 pci_dev->device == PCI_DEVICE_ID_ALI_5451 ?
4387 "32-bit" : "30-bit");
4388 goto out;
4389 }
4390 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &revision);
4391
4392 if (pci_id->device == PCI_DEVICE_ID_INTERG_5050)
4393 iobase = pci_resource_start(pci_dev, 1);
4394 else
4395 iobase = pci_resource_start(pci_dev, 0);
4396
4397 if (!request_region(iobase, 256, card_names[pci_id->driver_data])) {
4398 printk(KERN_ERR "trident: can't allocate I/O space at "
4399 "0x%4.4lx\n", iobase);
4400 goto out;
4401 }
4402
4403 rc = -ENOMEM;
4404 if ((card = kzalloc(sizeof(*card), GFP_KERNEL)) == NULL) {
4405 printk(KERN_ERR "trident: out of memory\n");
4406 goto out_release_region;
4407 }
4408
4409 init_timer(&card->timer);
4410 card->iobase = iobase;
4411 card->pci_dev = pci_dev_get(pci_dev);
4412 card->pci_id = pci_id->device;
4413 card->revision = revision;
4414 card->irq = pci_dev->irq;
4415 card->next = devs;
4416 card->magic = TRIDENT_CARD_MAGIC;
4417 card->banks[BANK_A].addresses = &bank_a_addrs;
4418 card->banks[BANK_A].bitmap = 0UL;
4419 card->banks[BANK_B].addresses = &bank_b_addrs;
4420 card->banks[BANK_B].bitmap = 0UL;
4421
4422 mutex_init(&card->open_mutex);
4423 spin_lock_init(&card->lock);
4424 init_timer(&card->timer);
4425
4426 devs = card;
4427
4428 pci_set_master(pci_dev);
4429
4430 printk(KERN_INFO "trident: %s found at IO 0x%04lx, IRQ %d\n",
4431 card_names[pci_id->driver_data], card->iobase, card->irq);
4432
4433 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
4434 /* ALi channel Management */
4435 card->alloc_pcm_channel = ali_alloc_pcm_channel;
4436 card->alloc_rec_pcm_channel = ali_alloc_rec_pcm_channel;
4437 card->free_pcm_channel = ali_free_pcm_channel;
4438
4439 card->address_interrupt = ali_address_interrupt;
4440
4441 /* Added by Matt Wu 01-05-2001 for spdif in */
4442 card->multi_channel_use_count = 0;
4443 card->rec_channel_use_count = 0;
4444
4445 /* ALi SPDIF OUT function */
4446 if (card->revision == ALI_5451_V02) {
4447 ali_setup_spdif_out(card, ALI_PCM_TO_SPDIF_OUT);
4448 res = create_proc_entry("ALi5451", 0, NULL);
4449 if (res) {
4450 res->write_proc = ali_write_proc;
4451 res->data = card;
4452 }
4453 }
4454
4455 /* Add H/W Volume Control By Matt Wu Jul. 06, 2001 */
4456 card->hwvolctl = 0;
4457 pci_dev_m1533 = pci_get_device(PCI_VENDOR_ID_AL,
4458 PCI_DEVICE_ID_AL_M1533,
4459 pci_dev_m1533);
4460 rc = -ENODEV;
4461 if (pci_dev_m1533 == NULL)
4462 goto out_proc_fs;
4463 pci_read_config_byte(pci_dev_m1533, 0x63, &bits);
4464 if (bits & (1 << 5))
4465 card->hwvolctl = 1;
4466 if (card->hwvolctl) {
4467 /* Clear m1533 pci cfg 78h bit 30 to zero, which makes
4468 GPIO11/12/13 work as ACGP_UP/DOWN/MUTE. */
4469 pci_read_config_byte(pci_dev_m1533, 0x7b, &bits);
4470 bits &= 0xbf; /*clear bit 6 */
4471 pci_write_config_byte(pci_dev_m1533, 0x7b, bits);
4472 }
4473 pci_dev_put(pci_dev_m1533);
4474
4475 } else if (card->pci_id == PCI_DEVICE_ID_INTERG_5050) {
4476 card->alloc_pcm_channel = cyber_alloc_pcm_channel;
4477 card->alloc_rec_pcm_channel = cyber_alloc_pcm_channel;
4478 card->free_pcm_channel = cyber_free_pcm_channel;
4479 card->address_interrupt = cyber_address_interrupt;
4480 cyber_init_ritual(card);
4481 } else {
4482 card->alloc_pcm_channel = trident_alloc_pcm_channel;
4483 card->alloc_rec_pcm_channel = trident_alloc_pcm_channel;
4484 card->free_pcm_channel = trident_free_pcm_channel;
4485 card->address_interrupt = trident_address_interrupt;
4486 }
4487
4488 /* claim our irq */
4489 rc = -ENODEV;
4490 if (request_irq(card->irq, &trident_interrupt, IRQF_SHARED,
4491 card_names[pci_id->driver_data], card)) {
4492 printk(KERN_ERR "trident: unable to allocate irq %d\n",
4493 card->irq);
4494 goto out_proc_fs;
4495 }
4496 /* register /dev/dsp */
4497 if ((card->dev_audio = register_sound_dsp(&trident_audio_fops, -1)) < 0) {
4498 printk(KERN_ERR "trident: couldn't register DSP device!\n");
4499 goto out_free_irq;
4500 }
4501 card->mixer_regs_ready = 0;
4502 /* initialize AC97 codec and register /dev/mixer */
4503 if (trident_ac97_init(card) <= 0) {
4504 /* unregister audio devices */
4505 for (i = 0; i < NR_AC97; i++) {
4506 if (card->ac97_codec[i] != NULL) {
4507 struct ac97_codec* codec = card->ac97_codec[i];
4508 unregister_sound_mixer(codec->dev_mixer);
4509 ac97_release_codec(codec);
4510 }
4511 }
4512 goto out_unregister_sound_dsp;
4513 }
4514 card->mixer_regs_ready = 1;
4515 outl(0x00, TRID_REG(card, T4D_MUSICVOL_WAVEVOL));
4516
4517 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
4518 /* Add H/W Volume Control By Matt Wu Jul. 06, 2001 */
4519 if (card->hwvolctl) {
4520 /* Enable GPIO IRQ (MISCINT bit 18h) */
4521 temp = inw(TRID_REG(card, T4D_MISCINT + 2));
4522 temp |= 0x0004;
4523 outw(temp, TRID_REG(card, T4D_MISCINT + 2));
4524
4525 /* Enable H/W Volume Control GLOVAL CONTROL bit 0 */
4526 temp = inw(TRID_REG(card, ALI_GLOBAL_CONTROL));
4527 temp |= 0x0001;
4528 outw(temp, TRID_REG(card, ALI_GLOBAL_CONTROL));
4529
4530 }
4531 if (card->revision == ALI_5451_V02)
4532 ali_close_multi_channels();
4533 /* edited by HMSEO for GT sound */
4534 #if defined(CONFIG_ALPHA_NAUTILUS) || defined(CONFIG_ALPHA_GENERIC)
4535 {
4536 u16 ac97_data;
4537 extern struct hwrpb_struct *hwrpb;
4538
4539 if ((hwrpb->sys_type) == 201) {
4540 printk(KERN_INFO "trident: Running on Alpha system "
4541 "type Nautilus\n");
4542 ac97_data = ali_ac97_get(card, 0, AC97_POWER_CONTROL);
4543 ali_ac97_set(card, 0, AC97_POWER_CONTROL,
4544 ac97_data | ALI_EAPD_POWER_DOWN);
4545 }
4546 }
4547 #endif /* CONFIG_ALPHA_NAUTILUS || CONFIG_ALPHA_GENERIC */
4548 /* edited by HMSEO for GT sound */
4549 }
4550 rc = 0;
4551 pci_set_drvdata(pci_dev, card);
4552
4553 /* Enable Address Engine Interrupts */
4554 trident_enable_loop_interrupts(card);
4555
4556 /* Register gameport */
4557 trident_register_gameport(card);
4558
4559 out:
4560 return rc;
4561
4562 out_unregister_sound_dsp:
4563 unregister_sound_dsp(card->dev_audio);
4564 out_free_irq:
4565 free_irq(card->irq, card);
4566 out_proc_fs:
4567 pci_dev_put(card->pci_dev);
4568 if (res) {
4569 remove_proc_entry("ALi5451", NULL);
4570 res = NULL;
4571 }
4572 kfree(card);
4573 devs = NULL;
4574 out_release_region:
4575 release_region(iobase, 256);
4576 return rc;
4577 }
4578
4579 static void __devexit
4580 trident_remove(struct pci_dev *pci_dev)
4581 {
4582 int i;
4583 struct trident_card *card = pci_get_drvdata(pci_dev);
4584
4585 /*
4586 * Kill running timers before unload. We can't have them
4587 * going off after rmmod!
4588 */
4589 if (card->hwvolctl)
4590 del_timer_sync(&card->timer);
4591
4592 /* ALi S/PDIF and Power Management */
4593 if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
4594 ali_setup_spdif_out(card, ALI_PCM_TO_SPDIF_OUT);
4595 ali_disable_special_channel(card, ALI_SPDIF_OUT_CHANNEL);
4596 ali_disable_spdif_in(card);
4597 remove_proc_entry("ALi5451", NULL);
4598 }
4599
4600 /* Unregister gameport */
4601 trident_unregister_gameport(card);
4602
4603 /* Kill interrupts, and SP/DIF */
4604 trident_disable_loop_interrupts(card);
4605
4606 /* free hardware resources */
4607 free_irq(card->irq, card);
4608 release_region(card->iobase, 256);
4609
4610 /* unregister audio devices */
4611 for (i = 0; i < NR_AC97; i++)
4612 if (card->ac97_codec[i] != NULL) {
4613 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
4614 ac97_release_codec(card->ac97_codec[i]);
4615 }
4616 unregister_sound_dsp(card->dev_audio);
4617
4618 pci_set_drvdata(pci_dev, NULL);
4619 pci_dev_put(card->pci_dev);
4620 kfree(card);
4621 }
4622
4623 MODULE_AUTHOR("Alan Cox, Aaron Holtzman, Ollie Lho, Ching Ling Lee, Muli Ben-Yehuda");
4624 MODULE_DESCRIPTION("Trident 4DWave/SiS 7018/ALi 5451 and Tvia/IGST CyberPro5050 PCI "
4625 "Audio Driver");
4626 MODULE_LICENSE("GPL");
4627
4628 #define TRIDENT_MODULE_NAME "trident"
4629
4630 static struct pci_driver trident_pci_driver = {
4631 .name = TRIDENT_MODULE_NAME,
4632 .id_table = trident_pci_tbl,
4633 .probe = trident_probe,
4634 .remove = __devexit_p(trident_remove),
4635 #ifdef CONFIG_PM
4636 .suspend = trident_suspend,
4637 .resume = trident_resume
4638 #endif
4639 };
4640
4641 static int __init
4642 trident_init_module(void)
4643 {
4644 printk(KERN_INFO "Trident 4DWave/SiS 7018/ALi 5451,Tvia CyberPro "
4645 "5050 PCI Audio, version " DRIVER_VERSION ", " __TIME__ " "
4646 __DATE__ "\n");
4647
4648 return pci_register_driver(&trident_pci_driver);
4649 }
4650
4651 static void __exit
4652 trident_cleanup_module(void)
4653 {
4654 pci_unregister_driver(&trident_pci_driver);
4655 }
4656
4657 module_init(trident_init_module);
4658 module_exit(trident_cleanup_module);
Support for the Chinese Samsung S3C2440 based development boards