IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[linux-2.6.git] / sound / oss / es1371.c
1 /*****************************************************************************/
2
3 /*
4  *      es1371.c  --  Creative Ensoniq ES1371.
5  *
6  *      Copyright (C) 1998-2001, 2003  Thomas Sailer (t.sailer@alumni.ethz.ch)
7  *
8  *      This program is free software; you can redistribute it and/or modify
9  *      it under the terms of the GNU General Public License as published by
10  *      the Free Software Foundation; either version 2 of the License, or
11  *      (at your option) any later version.
12  *
13  *      This program is distributed in the hope that it will be useful,
14  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *      GNU General Public License for more details.
17  *
18  *      You should have received a copy of the GNU General Public License
19  *      along with this program; if not, write to the Free Software
20  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  * Special thanks to Ensoniq
23  *
24  *  Supported devices:
25  *  /dev/dsp    standard /dev/dsp device, (mostly) OSS compatible
26  *  /dev/mixer  standard /dev/mixer device, (mostly) OSS compatible
27  *  /dev/dsp1   additional DAC, like /dev/dsp, but outputs to mixer "SYNTH" setting
28  *  /dev/midi   simple MIDI UART interface, no ioctl
29  *
30  *  NOTE: the card does not have any FM/Wavetable synthesizer, it is supposed
31  *  to be done in software. That is what /dev/dac is for. By now (Q2 1998)
32  *  there are several MIDI to PCM (WAV) packages, one of them is timidity.
33  *
34  *  Revision history
35  *    04.06.1998   0.1   Initial release
36  *                       Mixer stuff should be overhauled; especially optional AC97 mixer bits
37  *                       should be detected. This results in strange behaviour of some mixer
38  *                       settings, like master volume and mic.
39  *    08.06.1998   0.2   First release using Alan Cox' soundcore instead of miscdevice
40  *    03.08.1998   0.3   Do not include modversions.h
41  *                       Now mixer behaviour can basically be selected between
42  *                       "OSS documented" and "OSS actual" behaviour
43  *    31.08.1998   0.4   Fix realplayer problems - dac.count issues
44  *    27.10.1998   0.5   Fix joystick support
45  *                       -- Oliver Neukum (c188@org.chemie.uni-muenchen.de)
46  *    10.12.1998   0.6   Fix drain_dac trying to wait on not yet initialized DMA
47  *    23.12.1998   0.7   Fix a few f_file & FMODE_ bugs
48  *                       Don't wake up app until there are fragsize bytes to read/write
49  *    06.01.1999   0.8   remove the silly SA_INTERRUPT flag.
50  *                       hopefully killed the egcs section type conflict
51  *    12.03.1999   0.9   cinfo.blocks should be reset after GETxPTR ioctl.
52  *                       reported by Johan Maes <joma@telindus.be>
53  *    22.03.1999   0.10  return EAGAIN instead of EBUSY when O_NONBLOCK
54  *                       read/write cannot be executed
55  *    07.04.1999   0.11  implemented the following ioctl's: SOUND_PCM_READ_RATE, 
56  *                       SOUND_PCM_READ_CHANNELS, SOUND_PCM_READ_BITS; 
57  *                       Alpha fixes reported by Peter Jones <pjones@redhat.com>
58  *                       Another Alpha fix (wait_src_ready in init routine)
59  *                       reported by "Ivan N. Kokshaysky" <ink@jurassic.park.msu.ru>
60  *                       Note: joystick address handling might still be wrong on archs
61  *                       other than i386
62  *    15.06.1999   0.12  Fix bad allocation bug.
63  *                       Thanks to Deti Fliegl <fliegl@in.tum.de>
64  *    28.06.1999   0.13  Add pci_set_master
65  *    03.08.1999   0.14  adapt to Linus' new __setup/__initcall
66  *                       added kernel command line option "es1371=joystickaddr"
67  *                       removed CONFIG_SOUND_ES1371_JOYPORT_BOOT kludge
68  *    10.08.1999   0.15  (Re)added S/PDIF module option for cards revision >= 4.
69  *                       Initial version by Dave Platt <dplatt@snulbug.mtview.ca.us>.
70  *                       module_init/__setup fixes
71  *    08.16.1999   0.16  Joe Cotellese <joec@ensoniq.com>
72  *                       Added detection for ES1371 revision ID so that we can
73  *                       detect the ES1373 and later parts.
74  *                       added AC97 #defines for readability
75  *                       added a /proc file system for dumping hardware state
76  *                       updated SRC and CODEC w/r functions to accommodate bugs
77  *                       in some versions of the ES137x chips.
78  *    31.08.1999   0.17  add spin_lock_init
79  *                       replaced current->state = x with set_current_state(x)
80  *    03.09.1999   0.18  change read semantics for MIDI to match
81  *                       OSS more closely; remove possible wakeup race
82  *    21.10.1999   0.19  Round sampling rates, requested by
83  *                       Kasamatsu Kenichi <t29w0267@ip.media.kyoto-u.ac.jp>
84  *    27.10.1999   0.20  Added SigmaTel 3D enhancement string
85  *                       Codec ID printing changes
86  *    28.10.1999   0.21  More waitqueue races fixed
87  *                       Joe Cotellese <joec@ensoniq.com>
88  *                       Changed PCI detection routine so we can more easily
89  *                       detect ES137x chip and derivatives.
90  *    05.01.2000   0.22  Should now work with rev7 boards; patch by
91  *                       Eric Lemar, elemar@cs.washington.edu
92  *    08.01.2000   0.23  Prevent some ioctl's from returning bad count values on underrun/overrun;
93  *                       Tim Janik's BSE (Bedevilled Sound Engine) found this
94  *    07.02.2000   0.24  Use pci_alloc_consistent and pci_register_driver
95  *    07.02.2000   0.25  Use ac97_codec
96  *    01.03.2000   0.26  SPDIF patch by Mikael Bouillot <mikael.bouillot@bigfoot.com>
97  *                       Use pci_module_init
98  *    21.11.2000   0.27  Initialize dma buffers in poll, otherwise poll may return a bogus mask
99  *    12.12.2000   0.28  More dma buffer initializations, patch from
100  *                       Tjeerd Mulder <tjeerd.mulder@fujitsu-siemens.com>
101  *    05.01.2001   0.29  Hopefully updates will not be required anymore when Creative bumps
102  *                       the CT5880 revision.
103  *                       suggested by Stephan Müller <smueller@chronox.de>
104  *    31.01.2001   0.30  Register/Unregister gameport
105  *                       Fix SETTRIGGER non OSS API conformity
106  *    14.07.2001   0.31  Add list of laptops needing amplifier control
107  *    03.01.2003   0.32  open_mode fixes from Georg Acher <acher@in.tum.de>
108  */
109
110 /*****************************************************************************/
111       
112 #include <linux/interrupt.h>
113 #include <linux/module.h>
114 #include <linux/string.h>
115 #include <linux/ioport.h>
116 #include <linux/sched.h>
117 #include <linux/delay.h>
118 #include <linux/sound.h>
119 #include <linux/slab.h>
120 #include <linux/soundcard.h>
121 #include <linux/pci.h>
122 #include <linux/init.h>
123 #include <linux/poll.h>
124 #include <linux/bitops.h>
125 #include <linux/proc_fs.h>
126 #include <linux/spinlock.h>
127 #include <linux/smp_lock.h>
128 #include <linux/ac97_codec.h>
129 #include <linux/gameport.h>
130 #include <linux/wait.h>
131 #include <linux/dma-mapping.h>
132 #include <linux/mutex.h>
133
134 #include <asm/io.h>
135 #include <asm/page.h>
136 #include <asm/uaccess.h>
137
138 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
139 #define SUPPORT_JOYSTICK
140 #endif
141
142 /* --------------------------------------------------------------------- */
143
144 #undef OSS_DOCUMENTED_MIXER_SEMANTICS
145 #define ES1371_DEBUG
146 #define DBG(x) {}
147 /*#define DBG(x) {x}*/
148
149 /* --------------------------------------------------------------------- */
150
151 #ifndef PCI_VENDOR_ID_ENSONIQ
152 #define PCI_VENDOR_ID_ENSONIQ        0x1274    
153 #endif
154
155 #ifndef PCI_VENDOR_ID_ECTIVA
156 #define PCI_VENDOR_ID_ECTIVA         0x1102
157 #endif
158
159 #ifndef PCI_DEVICE_ID_ENSONIQ_ES1371
160 #define PCI_DEVICE_ID_ENSONIQ_ES1371 0x1371
161 #endif
162
163 #ifndef PCI_DEVICE_ID_ENSONIQ_CT5880
164 #define PCI_DEVICE_ID_ENSONIQ_CT5880 0x5880
165 #endif
166
167 #ifndef PCI_DEVICE_ID_ECTIVA_EV1938
168 #define PCI_DEVICE_ID_ECTIVA_EV1938 0x8938
169 #endif
170
171 /* ES1371 chip ID */
172 /* This is a little confusing because all ES1371 compatible chips have the
173    same DEVICE_ID, the only thing differentiating them is the REV_ID field.
174    This is only significant if you want to enable features on the later parts.
175    Yes, I know it's stupid and why didn't we use the sub IDs?
176 */
177 #define ES1371REV_ES1373_A  0x04
178 #define ES1371REV_ES1373_B  0x06
179 #define ES1371REV_CT5880_A  0x07
180 #define CT5880REV_CT5880_C  0x02
181 #define CT5880REV_CT5880_D  0x03
182 #define ES1371REV_ES1371_B  0x09
183 #define EV1938REV_EV1938_A  0x00
184 #define ES1371REV_ES1373_8  0x08
185
186 #define ES1371_MAGIC  ((PCI_VENDOR_ID_ENSONIQ<<16)|PCI_DEVICE_ID_ENSONIQ_ES1371)
187
188 #define ES1371_EXTENT             0x40
189 #define JOY_EXTENT                8
190
191 #define ES1371_REG_CONTROL        0x00
192 #define ES1371_REG_STATUS         0x04 /* on the 5880 it is control/status */
193 #define ES1371_REG_UART_DATA      0x08
194 #define ES1371_REG_UART_STATUS    0x09
195 #define ES1371_REG_UART_CONTROL   0x09
196 #define ES1371_REG_UART_TEST      0x0a
197 #define ES1371_REG_MEMPAGE        0x0c
198 #define ES1371_REG_SRCONV         0x10
199 #define ES1371_REG_CODEC          0x14
200 #define ES1371_REG_LEGACY         0x18
201 #define ES1371_REG_SERIAL_CONTROL 0x20
202 #define ES1371_REG_DAC1_SCOUNT    0x24
203 #define ES1371_REG_DAC2_SCOUNT    0x28
204 #define ES1371_REG_ADC_SCOUNT     0x2c
205
206 #define ES1371_REG_DAC1_FRAMEADR  0xc30
207 #define ES1371_REG_DAC1_FRAMECNT  0xc34
208 #define ES1371_REG_DAC2_FRAMEADR  0xc38
209 #define ES1371_REG_DAC2_FRAMECNT  0xc3c
210 #define ES1371_REG_ADC_FRAMEADR   0xd30
211 #define ES1371_REG_ADC_FRAMECNT   0xd34
212
213 #define ES1371_FMT_U8_MONO     0
214 #define ES1371_FMT_U8_STEREO   1
215 #define ES1371_FMT_S16_MONO    2
216 #define ES1371_FMT_S16_STEREO  3
217 #define ES1371_FMT_STEREO      1
218 #define ES1371_FMT_S16         2
219 #define ES1371_FMT_MASK        3
220
221 static const unsigned sample_size[] = { 1, 2, 2, 4 };
222 static const unsigned sample_shift[] = { 0, 1, 1, 2 };
223
224 #define CTRL_RECEN_B    0x08000000  /* 1 = don't mix analog in to digital out */
225 #define CTRL_SPDIFEN_B  0x04000000
226 #define CTRL_JOY_SHIFT  24
227 #define CTRL_JOY_MASK   3
228 #define CTRL_JOY_200    0x00000000  /* joystick base address */
229 #define CTRL_JOY_208    0x01000000
230 #define CTRL_JOY_210    0x02000000
231 #define CTRL_JOY_218    0x03000000
232 #define CTRL_GPIO_IN0   0x00100000  /* general purpose inputs/outputs */
233 #define CTRL_GPIO_IN1   0x00200000
234 #define CTRL_GPIO_IN2   0x00400000
235 #define CTRL_GPIO_IN3   0x00800000
236 #define CTRL_GPIO_OUT0  0x00010000
237 #define CTRL_GPIO_OUT1  0x00020000
238 #define CTRL_GPIO_OUT2  0x00040000
239 #define CTRL_GPIO_OUT3  0x00080000
240 #define CTRL_MSFMTSEL   0x00008000  /* MPEG serial data fmt: 0 = Sony, 1 = I2S */
241 #define CTRL_SYNCRES    0x00004000  /* AC97 warm reset */
242 #define CTRL_ADCSTOP    0x00002000  /* stop ADC transfers */
243 #define CTRL_PWR_INTRM  0x00001000  /* 1 = power level ints enabled */
244 #define CTRL_M_CB       0x00000800  /* recording source: 0 = ADC, 1 = MPEG */
245 #define CTRL_CCB_INTRM  0x00000400  /* 1 = CCB "voice" ints enabled */
246 #define CTRL_PDLEV0     0x00000000  /* power down level */
247 #define CTRL_PDLEV1     0x00000100
248 #define CTRL_PDLEV2     0x00000200
249 #define CTRL_PDLEV3     0x00000300
250 #define CTRL_BREQ       0x00000080  /* 1 = test mode (internal mem test) */
251 #define CTRL_DAC1_EN    0x00000040  /* enable DAC1 */
252 #define CTRL_DAC2_EN    0x00000020  /* enable DAC2 */
253 #define CTRL_ADC_EN     0x00000010  /* enable ADC */
254 #define CTRL_UART_EN    0x00000008  /* enable MIDI uart */
255 #define CTRL_JYSTK_EN   0x00000004  /* enable Joystick port */
256 #define CTRL_XTALCLKDIS 0x00000002  /* 1 = disable crystal clock input */
257 #define CTRL_PCICLKDIS  0x00000001  /* 1 = disable PCI clock distribution */
258
259
260 #define STAT_INTR       0x80000000  /* wired or of all interrupt bits */
261 #define CSTAT_5880_AC97_RST 0x20000000 /* CT5880 Reset bit */
262 #define STAT_EN_SPDIF   0x00040000  /* enable S/PDIF circuitry */
263 #define STAT_TS_SPDIF   0x00020000  /* test S/PDIF circuitry */
264 #define STAT_TESTMODE   0x00010000  /* test ASIC */
265 #define STAT_SYNC_ERR   0x00000100  /* 1 = codec sync error */
266 #define STAT_VC         0x000000c0  /* CCB int source, 0=DAC1, 1=DAC2, 2=ADC, 3=undef */
267 #define STAT_SH_VC      6
268 #define STAT_MPWR       0x00000020  /* power level interrupt */
269 #define STAT_MCCB       0x00000010  /* CCB int pending */
270 #define STAT_UART       0x00000008  /* UART int pending */
271 #define STAT_DAC1       0x00000004  /* DAC1 int pending */
272 #define STAT_DAC2       0x00000002  /* DAC2 int pending */
273 #define STAT_ADC        0x00000001  /* ADC int pending */
274
275 #define USTAT_RXINT     0x80        /* UART rx int pending */
276 #define USTAT_TXINT     0x04        /* UART tx int pending */
277 #define USTAT_TXRDY     0x02        /* UART tx ready */
278 #define USTAT_RXRDY     0x01        /* UART rx ready */
279
280 #define UCTRL_RXINTEN   0x80        /* 1 = enable RX ints */
281 #define UCTRL_TXINTEN   0x60        /* TX int enable field mask */
282 #define UCTRL_ENA_TXINT 0x20        /* enable TX int */
283 #define UCTRL_CNTRL     0x03        /* control field */
284 #define UCTRL_CNTRL_SWR 0x03        /* software reset command */
285
286 /* sample rate converter */
287 #define SRC_OKSTATE        1
288
289 #define SRC_RAMADDR_MASK   0xfe000000
290 #define SRC_RAMADDR_SHIFT  25
291 #define SRC_DAC1FREEZE     (1UL << 21)
292 #define SRC_DAC2FREEZE      (1UL << 20)
293 #define SRC_ADCFREEZE      (1UL << 19)
294
295
296 #define SRC_WE             0x01000000  /* read/write control for SRC RAM */
297 #define SRC_BUSY           0x00800000  /* SRC busy */
298 #define SRC_DIS            0x00400000  /* 1 = disable SRC */
299 #define SRC_DDAC1          0x00200000  /* 1 = disable accum update for DAC1 */
300 #define SRC_DDAC2          0x00100000  /* 1 = disable accum update for DAC2 */
301 #define SRC_DADC           0x00080000  /* 1 = disable accum update for ADC2 */
302 #define SRC_CTLMASK        0x00780000
303 #define SRC_RAMDATA_MASK   0x0000ffff
304 #define SRC_RAMDATA_SHIFT  0
305
306 #define SRCREG_ADC      0x78
307 #define SRCREG_DAC1     0x70
308 #define SRCREG_DAC2     0x74
309 #define SRCREG_VOL_ADC  0x6c
310 #define SRCREG_VOL_DAC1 0x7c
311 #define SRCREG_VOL_DAC2 0x7e
312
313 #define SRCREG_TRUNC_N     0x00
314 #define SRCREG_INT_REGS    0x01
315 #define SRCREG_ACCUM_FRAC  0x02
316 #define SRCREG_VFREQ_FRAC  0x03
317
318 #define CODEC_PIRD        0x00800000  /* 0 = write AC97 register */
319 #define CODEC_PIADD_MASK  0x007f0000
320 #define CODEC_PIADD_SHIFT 16
321 #define CODEC_PIDAT_MASK  0x0000ffff
322 #define CODEC_PIDAT_SHIFT 0
323
324 #define CODEC_RDY         0x80000000  /* AC97 read data valid */
325 #define CODEC_WIP         0x40000000  /* AC97 write in progress */
326 #define CODEC_PORD        0x00800000  /* 0 = write AC97 register */
327 #define CODEC_POADD_MASK  0x007f0000
328 #define CODEC_POADD_SHIFT 16
329 #define CODEC_PODAT_MASK  0x0000ffff
330 #define CODEC_PODAT_SHIFT 0
331
332
333 #define LEGACY_JFAST      0x80000000  /* fast joystick timing */
334 #define LEGACY_FIRQ       0x01000000  /* force IRQ */
335
336 #define SCTRL_DACTEST     0x00400000  /* 1 = DAC test, test vector generation purposes */
337 #define SCTRL_P2ENDINC    0x00380000  /*  */
338 #define SCTRL_SH_P2ENDINC 19
339 #define SCTRL_P2STINC     0x00070000  /*  */
340 #define SCTRL_SH_P2STINC  16
341 #define SCTRL_R1LOOPSEL   0x00008000  /* 0 = loop mode */
342 #define SCTRL_P2LOOPSEL   0x00004000  /* 0 = loop mode */
343 #define SCTRL_P1LOOPSEL   0x00002000  /* 0 = loop mode */
344 #define SCTRL_P2PAUSE     0x00001000  /* 1 = pause mode */
345 #define SCTRL_P1PAUSE     0x00000800  /* 1 = pause mode */
346 #define SCTRL_R1INTEN     0x00000400  /* enable interrupt */
347 #define SCTRL_P2INTEN     0x00000200  /* enable interrupt */
348 #define SCTRL_P1INTEN     0x00000100  /* enable interrupt */
349 #define SCTRL_P1SCTRLD    0x00000080  /* reload sample count register for DAC1 */
350 #define SCTRL_P2DACSEN    0x00000040  /* 1 = DAC2 play back last sample when disabled */
351 #define SCTRL_R1SEB       0x00000020  /* 1 = 16bit */
352 #define SCTRL_R1SMB       0x00000010  /* 1 = stereo */
353 #define SCTRL_R1FMT       0x00000030  /* format mask */
354 #define SCTRL_SH_R1FMT    4
355 #define SCTRL_P2SEB       0x00000008  /* 1 = 16bit */
356 #define SCTRL_P2SMB       0x00000004  /* 1 = stereo */
357 #define SCTRL_P2FMT       0x0000000c  /* format mask */
358 #define SCTRL_SH_P2FMT    2
359 #define SCTRL_P1SEB       0x00000002  /* 1 = 16bit */
360 #define SCTRL_P1SMB       0x00000001  /* 1 = stereo */
361 #define SCTRL_P1FMT       0x00000003  /* format mask */
362 #define SCTRL_SH_P1FMT    0
363
364
365 /* misc stuff */
366 #define POLL_COUNT   0x1000
367 #define FMODE_DAC         4           /* slight misuse of mode_t */
368
369 /* MIDI buffer sizes */
370
371 #define MIDIINBUF  256
372 #define MIDIOUTBUF 256
373
374 #define FMODE_MIDI_SHIFT 3
375 #define FMODE_MIDI_READ  (FMODE_READ << FMODE_MIDI_SHIFT)
376 #define FMODE_MIDI_WRITE (FMODE_WRITE << FMODE_MIDI_SHIFT)
377
378 #define ES1371_MODULE_NAME "es1371"
379 #define PFX ES1371_MODULE_NAME ": "
380
381 /* --------------------------------------------------------------------- */
382
383 struct es1371_state {
384         /* magic */
385         unsigned int magic;
386
387         /* list of es1371 devices */
388         struct list_head devs;
389
390         /* the corresponding pci_dev structure */
391         struct pci_dev *dev;
392
393         /* soundcore stuff */
394         int dev_audio;
395         int dev_dac;
396         int dev_midi;
397         
398         /* hardware resources */
399         unsigned long io; /* long for SPARC */
400         unsigned int irq;
401
402         /* PCI ID's */
403         u16 vendor;
404         u16 device;
405         u8 rev; /* the chip revision */
406
407         /* options */
408         int spdif_volume; /* S/PDIF output is enabled if != -1 */
409
410 #ifdef ES1371_DEBUG
411         /* debug /proc entry */
412         struct proc_dir_entry *ps;
413 #endif /* ES1371_DEBUG */
414
415         struct ac97_codec *codec;
416
417         /* wave stuff */
418         unsigned ctrl;
419         unsigned sctrl;
420         unsigned dac1rate, dac2rate, adcrate;
421
422         spinlock_t lock;
423         struct mutex open_mutex;
424         mode_t open_mode;
425         wait_queue_head_t open_wait;
426
427         struct dmabuf {
428                 void *rawbuf;
429                 dma_addr_t dmaaddr;
430                 unsigned buforder;
431                 unsigned numfrag;
432                 unsigned fragshift;
433                 unsigned hwptr, swptr;
434                 unsigned total_bytes;
435                 int count;
436                 unsigned error; /* over/underrun */
437                 wait_queue_head_t wait;
438                 /* redundant, but makes calculations easier */
439                 unsigned fragsize;
440                 unsigned dmasize;
441                 unsigned fragsamples;
442                 /* OSS stuff */
443                 unsigned mapped:1;
444                 unsigned ready:1;
445                 unsigned endcleared:1;
446                 unsigned enabled:1;
447                 unsigned ossfragshift;
448                 int ossmaxfrags;
449                 unsigned subdivision;
450         } dma_dac1, dma_dac2, dma_adc;
451
452         /* midi stuff */
453         struct {
454                 unsigned ird, iwr, icnt;
455                 unsigned ord, owr, ocnt;
456                 wait_queue_head_t iwait;
457                 wait_queue_head_t owait;
458                 unsigned char ibuf[MIDIINBUF];
459                 unsigned char obuf[MIDIOUTBUF];
460         } midi;
461
462 #ifdef SUPPORT_JOYSTICK
463         struct gameport *gameport;
464 #endif
465
466         struct mutex sem;
467 };
468
469 /* --------------------------------------------------------------------- */
470
471 static LIST_HEAD(devs);
472
473 /* --------------------------------------------------------------------- */
474
475 static inline unsigned ld2(unsigned int x)
476 {
477         unsigned r = 0;
478         
479         if (x >= 0x10000) {
480                 x >>= 16;
481                 r += 16;
482         }
483         if (x >= 0x100) {
484                 x >>= 8;
485                 r += 8;
486         }
487         if (x >= 0x10) {
488                 x >>= 4;
489                 r += 4;
490         }
491         if (x >= 4) {
492                 x >>= 2;
493                 r += 2;
494         }
495         if (x >= 2)
496                 r++;
497         return r;
498 }
499
500 /* --------------------------------------------------------------------- */
501
502 static unsigned wait_src_ready(struct es1371_state *s)
503 {
504         unsigned int t, r;
505
506         for (t = 0; t < POLL_COUNT; t++) {
507                 if (!((r = inl(s->io + ES1371_REG_SRCONV)) & SRC_BUSY))
508                         return r;
509                 udelay(1);
510         }
511         printk(KERN_DEBUG PFX "sample rate converter timeout r = 0x%08x\n", r);
512         return r;
513 }
514
515 static unsigned src_read(struct es1371_state *s, unsigned reg)
516 {
517         unsigned int temp,i,orig;
518
519         /* wait for ready */
520         temp = wait_src_ready (s);
521
522         /* we can only access the SRC at certain times, make sure
523            we're allowed to before we read */
524            
525         orig = temp;
526         /* expose the SRC state bits */
527         outl ( (temp & SRC_CTLMASK) | (reg << SRC_RAMADDR_SHIFT) | 0x10000UL,
528                s->io + ES1371_REG_SRCONV);
529
530         /* now, wait for busy and the correct time to read */
531         temp = wait_src_ready (s);
532
533         if ( (temp & 0x00870000UL ) != ( SRC_OKSTATE << 16 )){
534                 /* wait for the right state */
535                 for (i=0; i<POLL_COUNT; i++){
536                         temp = inl (s->io + ES1371_REG_SRCONV);
537                         if ( (temp & 0x00870000UL ) == ( SRC_OKSTATE << 16 ))
538                                 break;
539                 }
540         }
541
542         /* hide the state bits */
543         outl ((orig & SRC_CTLMASK) | (reg << SRC_RAMADDR_SHIFT), s->io + ES1371_REG_SRCONV);
544         return temp;
545                         
546                 
547 }
548
549 static void src_write(struct es1371_state *s, unsigned reg, unsigned data)
550 {
551       
552         unsigned int r;
553
554         r = wait_src_ready(s) & (SRC_DIS | SRC_DDAC1 | SRC_DDAC2 | SRC_DADC);
555         r |= (reg << SRC_RAMADDR_SHIFT) & SRC_RAMADDR_MASK;
556         r |= (data << SRC_RAMDATA_SHIFT) & SRC_RAMDATA_MASK;
557         outl(r | SRC_WE, s->io + ES1371_REG_SRCONV);
558
559 }
560
561 /* --------------------------------------------------------------------- */
562
563 /* most of the following here is black magic */
564 static void set_adc_rate(struct es1371_state *s, unsigned rate)
565 {
566         unsigned long flags;
567         unsigned int n, truncm, freq;
568
569         if (rate > 48000)
570                 rate = 48000;
571         if (rate < 4000)
572                 rate = 4000;
573         n = rate / 3000;
574         if ((1 << n) & ((1 << 15) | (1 << 13) | (1 << 11) | (1 << 9)))
575                 n--;
576         truncm = (21 * n - 1) | 1;
577         freq = ((48000UL << 15) / rate) * n;
578         s->adcrate = (48000UL << 15) / (freq / n);
579         spin_lock_irqsave(&s->lock, flags);
580         if (rate >= 24000) {
581                 if (truncm > 239)
582                         truncm = 239;
583                 src_write(s, SRCREG_ADC+SRCREG_TRUNC_N, 
584                           (((239 - truncm) >> 1) << 9) | (n << 4));
585         } else {
586                 if (truncm > 119)
587                         truncm = 119;
588                 src_write(s, SRCREG_ADC+SRCREG_TRUNC_N, 
589                           0x8000 | (((119 - truncm) >> 1) << 9) | (n << 4));
590         }               
591         src_write(s, SRCREG_ADC+SRCREG_INT_REGS, 
592                   (src_read(s, SRCREG_ADC+SRCREG_INT_REGS) & 0x00ff) |
593                   ((freq >> 5) & 0xfc00));
594         src_write(s, SRCREG_ADC+SRCREG_VFREQ_FRAC, freq & 0x7fff);
595         src_write(s, SRCREG_VOL_ADC, n << 8);
596         src_write(s, SRCREG_VOL_ADC+1, n << 8);
597         spin_unlock_irqrestore(&s->lock, flags);
598 }
599
600
601 static void set_dac1_rate(struct es1371_state *s, unsigned rate)
602 {
603         unsigned long flags;
604         unsigned int freq, r;
605
606         if (rate > 48000)
607                 rate = 48000;
608         if (rate < 4000)
609                 rate = 4000;
610         freq = ((rate << 15) + 1500) / 3000;
611         s->dac1rate = (freq * 3000 + 16384) >> 15;
612         spin_lock_irqsave(&s->lock, flags);
613         r = (wait_src_ready(s) & (SRC_DIS | SRC_DDAC2 | SRC_DADC)) | SRC_DDAC1;
614         outl(r, s->io + ES1371_REG_SRCONV);
615         src_write(s, SRCREG_DAC1+SRCREG_INT_REGS, 
616                   (src_read(s, SRCREG_DAC1+SRCREG_INT_REGS) & 0x00ff) |
617                   ((freq >> 5) & 0xfc00));
618         src_write(s, SRCREG_DAC1+SRCREG_VFREQ_FRAC, freq & 0x7fff);
619         r = (wait_src_ready(s) & (SRC_DIS | SRC_DDAC2 | SRC_DADC));
620         outl(r, s->io + ES1371_REG_SRCONV);
621         spin_unlock_irqrestore(&s->lock, flags);
622 }
623
624 static void set_dac2_rate(struct es1371_state *s, unsigned rate)
625 {
626         unsigned long flags;
627         unsigned int freq, r;
628
629         if (rate > 48000)
630                 rate = 48000;
631         if (rate < 4000)
632                 rate = 4000;
633         freq = ((rate << 15) + 1500) / 3000;
634         s->dac2rate = (freq * 3000 + 16384) >> 15;
635         spin_lock_irqsave(&s->lock, flags);
636         r = (wait_src_ready(s) & (SRC_DIS | SRC_DDAC1 | SRC_DADC)) | SRC_DDAC2;
637         outl(r, s->io + ES1371_REG_SRCONV);
638         src_write(s, SRCREG_DAC2+SRCREG_INT_REGS, 
639                   (src_read(s, SRCREG_DAC2+SRCREG_INT_REGS) & 0x00ff) |
640                   ((freq >> 5) & 0xfc00));
641         src_write(s, SRCREG_DAC2+SRCREG_VFREQ_FRAC, freq & 0x7fff);
642         r = (wait_src_ready(s) & (SRC_DIS | SRC_DDAC1 | SRC_DADC));
643         outl(r, s->io + ES1371_REG_SRCONV);
644         spin_unlock_irqrestore(&s->lock, flags);
645 }
646
647 /* --------------------------------------------------------------------- */
648
649 static void __devinit src_init(struct es1371_state *s)
650 {
651         unsigned int i;
652
653         /* before we enable or disable the SRC we need
654            to wait for it to become ready */
655         wait_src_ready(s);
656
657         outl(SRC_DIS, s->io + ES1371_REG_SRCONV);
658
659         for (i = 0; i < 0x80; i++)
660                 src_write(s, i, 0);
661
662         src_write(s, SRCREG_DAC1+SRCREG_TRUNC_N, 16 << 4);
663         src_write(s, SRCREG_DAC1+SRCREG_INT_REGS, 16 << 10);
664         src_write(s, SRCREG_DAC2+SRCREG_TRUNC_N, 16 << 4);
665         src_write(s, SRCREG_DAC2+SRCREG_INT_REGS, 16 << 10);
666         src_write(s, SRCREG_VOL_ADC, 1 << 12);
667         src_write(s, SRCREG_VOL_ADC+1, 1 << 12);
668         src_write(s, SRCREG_VOL_DAC1, 1 << 12);
669         src_write(s, SRCREG_VOL_DAC1+1, 1 << 12);
670         src_write(s, SRCREG_VOL_DAC2, 1 << 12);
671         src_write(s, SRCREG_VOL_DAC2+1, 1 << 12);
672         set_adc_rate(s, 22050);
673         set_dac1_rate(s, 22050);
674         set_dac2_rate(s, 22050);
675
676         /* WARNING:
677          * enabling the sample rate converter without properly programming
678          * its parameters causes the chip to lock up (the SRC busy bit will
679          * be stuck high, and I've found no way to rectify this other than
680          * power cycle)
681          */
682         wait_src_ready(s);
683         outl(0, s->io+ES1371_REG_SRCONV);
684 }
685
686 /* --------------------------------------------------------------------- */
687
688 static void wrcodec(struct ac97_codec *codec, u8 addr, u16 data)
689 {
690         struct es1371_state *s = (struct es1371_state *)codec->private_data;
691         unsigned long flags;
692         unsigned t, x;
693         
694         spin_lock_irqsave(&s->lock, flags);
695         for (t = 0; t < POLL_COUNT; t++)
696                 if (!(inl(s->io+ES1371_REG_CODEC) & CODEC_WIP))
697                         break;
698
699         /* save the current state for later */
700         x = wait_src_ready(s);
701
702         /* enable SRC state data in SRC mux */
703         outl((x & (SRC_DIS | SRC_DDAC1 | SRC_DDAC2 | SRC_DADC)) | 0x00010000,
704              s->io+ES1371_REG_SRCONV);
705
706         /* wait for not busy (state 0) first to avoid
707            transition states */
708         for (t=0; t<POLL_COUNT; t++){
709                 if((inl(s->io+ES1371_REG_SRCONV) & 0x00870000) ==0 )
710                     break;
711                 udelay(1);
712         }
713         
714         /* wait for a SAFE time to write addr/data and then do it, dammit */
715         for (t=0; t<POLL_COUNT; t++){
716                 if((inl(s->io+ES1371_REG_SRCONV) & 0x00870000) ==0x00010000)
717                     break;
718                 udelay(1);
719         }
720
721         outl(((addr << CODEC_POADD_SHIFT) & CODEC_POADD_MASK) |
722              ((data << CODEC_PODAT_SHIFT) & CODEC_PODAT_MASK), s->io+ES1371_REG_CODEC);
723
724         /* restore SRC reg */
725         wait_src_ready(s);
726         outl(x, s->io+ES1371_REG_SRCONV);
727         spin_unlock_irqrestore(&s->lock, flags);
728 }
729
730 static u16 rdcodec(struct ac97_codec *codec, u8 addr)
731 {
732         struct es1371_state *s = (struct es1371_state *)codec->private_data;
733         unsigned long flags;
734         unsigned t, x;
735
736         spin_lock_irqsave(&s->lock, flags);
737         
738         /* wait for WIP to go away */
739         for (t = 0; t < 0x1000; t++)
740                 if (!(inl(s->io+ES1371_REG_CODEC) & CODEC_WIP))
741                         break;
742
743         /* save the current state for later */
744         x = (wait_src_ready(s) & (SRC_DIS | SRC_DDAC1 | SRC_DDAC2 | SRC_DADC));
745
746         /* enable SRC state data in SRC mux */
747         outl( x | 0x00010000,
748               s->io+ES1371_REG_SRCONV);
749
750         /* wait for not busy (state 0) first to avoid
751            transition states */
752         for (t=0; t<POLL_COUNT; t++){
753                 if((inl(s->io+ES1371_REG_SRCONV) & 0x00870000) ==0 )
754                     break;
755                 udelay(1);
756         }
757         
758         /* wait for a SAFE time to write addr/data and then do it, dammit */
759         for (t=0; t<POLL_COUNT; t++){
760                 if((inl(s->io+ES1371_REG_SRCONV) & 0x00870000) ==0x00010000)
761                     break;
762                 udelay(1);
763         }
764
765         outl(((addr << CODEC_POADD_SHIFT) & CODEC_POADD_MASK) | CODEC_PORD, s->io+ES1371_REG_CODEC);
766         /* restore SRC reg */
767         wait_src_ready(s);
768         outl(x, s->io+ES1371_REG_SRCONV);
769
770         /* wait for WIP again */
771         for (t = 0; t < 0x1000; t++)
772                 if (!(inl(s->io+ES1371_REG_CODEC) & CODEC_WIP))
773                         break;
774         
775         /* now wait for the stinkin' data (RDY) */
776         for (t = 0; t < POLL_COUNT; t++)
777                 if ((x = inl(s->io+ES1371_REG_CODEC)) & CODEC_RDY)
778                         break;
779         
780         spin_unlock_irqrestore(&s->lock, flags);
781         return ((x & CODEC_PIDAT_MASK) >> CODEC_PIDAT_SHIFT);
782 }
783
784 /* --------------------------------------------------------------------- */
785
786 static inline void stop_adc(struct es1371_state *s)
787 {
788         unsigned long flags;
789
790         spin_lock_irqsave(&s->lock, flags);
791         s->ctrl &= ~CTRL_ADC_EN;
792         outl(s->ctrl, s->io+ES1371_REG_CONTROL);
793         spin_unlock_irqrestore(&s->lock, flags);
794 }       
795
796 static inline void stop_dac1(struct es1371_state *s)
797 {
798         unsigned long flags;
799
800         spin_lock_irqsave(&s->lock, flags);
801         s->ctrl &= ~CTRL_DAC1_EN;
802         outl(s->ctrl, s->io+ES1371_REG_CONTROL);
803         spin_unlock_irqrestore(&s->lock, flags);
804 }       
805
806 static inline void stop_dac2(struct es1371_state *s)
807 {
808         unsigned long flags;
809
810         spin_lock_irqsave(&s->lock, flags);
811         s->ctrl &= ~CTRL_DAC2_EN;
812         outl(s->ctrl, s->io+ES1371_REG_CONTROL);
813         spin_unlock_irqrestore(&s->lock, flags);
814 }       
815
816 static void start_dac1(struct es1371_state *s)
817 {
818         unsigned long flags;
819         unsigned fragremain, fshift;
820
821         spin_lock_irqsave(&s->lock, flags);
822         if (!(s->ctrl & CTRL_DAC1_EN) && (s->dma_dac1.mapped || s->dma_dac1.count > 0)
823             && s->dma_dac1.ready) {
824                 s->ctrl |= CTRL_DAC1_EN;
825                 s->sctrl = (s->sctrl & ~(SCTRL_P1LOOPSEL | SCTRL_P1PAUSE | SCTRL_P1SCTRLD)) | SCTRL_P1INTEN;
826                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
827                 fragremain = ((- s->dma_dac1.hwptr) & (s->dma_dac1.fragsize-1));
828                 fshift = sample_shift[(s->sctrl & SCTRL_P1FMT) >> SCTRL_SH_P1FMT];
829                 if (fragremain < 2*fshift)
830                         fragremain = s->dma_dac1.fragsize;
831                 outl((fragremain >> fshift) - 1, s->io+ES1371_REG_DAC1_SCOUNT);
832                 outl(s->ctrl, s->io+ES1371_REG_CONTROL);
833                 outl((s->dma_dac1.fragsize >> fshift) - 1, s->io+ES1371_REG_DAC1_SCOUNT);
834         }
835         spin_unlock_irqrestore(&s->lock, flags);
836 }       
837
838 static void start_dac2(struct es1371_state *s)
839 {
840         unsigned long flags;
841         unsigned fragremain, fshift;
842
843         spin_lock_irqsave(&s->lock, flags);
844         if (!(s->ctrl & CTRL_DAC2_EN) && (s->dma_dac2.mapped || s->dma_dac2.count > 0)
845             && s->dma_dac2.ready) {
846                 s->ctrl |= CTRL_DAC2_EN;
847                 s->sctrl = (s->sctrl & ~(SCTRL_P2LOOPSEL | SCTRL_P2PAUSE | SCTRL_P2DACSEN | 
848                                          SCTRL_P2ENDINC | SCTRL_P2STINC)) | SCTRL_P2INTEN |
849                         (((s->sctrl & SCTRL_P2FMT) ? 2 : 1) << SCTRL_SH_P2ENDINC) | 
850                         (0 << SCTRL_SH_P2STINC);
851                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
852                 fragremain = ((- s->dma_dac2.hwptr) & (s->dma_dac2.fragsize-1));
853                 fshift = sample_shift[(s->sctrl & SCTRL_P2FMT) >> SCTRL_SH_P2FMT];
854                 if (fragremain < 2*fshift)
855                         fragremain = s->dma_dac2.fragsize;
856                 outl((fragremain >> fshift) - 1, s->io+ES1371_REG_DAC2_SCOUNT);
857                 outl(s->ctrl, s->io+ES1371_REG_CONTROL);
858                 outl((s->dma_dac2.fragsize >> fshift) - 1, s->io+ES1371_REG_DAC2_SCOUNT);
859         }
860         spin_unlock_irqrestore(&s->lock, flags);
861 }       
862
863 static void start_adc(struct es1371_state *s)
864 {
865         unsigned long flags;
866         unsigned fragremain, fshift;
867
868         spin_lock_irqsave(&s->lock, flags);
869         if (!(s->ctrl & CTRL_ADC_EN) && (s->dma_adc.mapped || s->dma_adc.count < (signed)(s->dma_adc.dmasize - 2*s->dma_adc.fragsize))
870             && s->dma_adc.ready) {
871                 s->ctrl |= CTRL_ADC_EN;
872                 s->sctrl = (s->sctrl & ~SCTRL_R1LOOPSEL) | SCTRL_R1INTEN;
873                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
874                 fragremain = ((- s->dma_adc.hwptr) & (s->dma_adc.fragsize-1));
875                 fshift = sample_shift[(s->sctrl & SCTRL_R1FMT) >> SCTRL_SH_R1FMT];
876                 if (fragremain < 2*fshift)
877                         fragremain = s->dma_adc.fragsize;
878                 outl((fragremain >> fshift) - 1, s->io+ES1371_REG_ADC_SCOUNT);
879                 outl(s->ctrl, s->io+ES1371_REG_CONTROL);
880                 outl((s->dma_adc.fragsize >> fshift) - 1, s->io+ES1371_REG_ADC_SCOUNT);
881         }
882         spin_unlock_irqrestore(&s->lock, flags);
883 }       
884
885 /* --------------------------------------------------------------------- */
886
887 #define DMABUF_DEFAULTORDER (17-PAGE_SHIFT)
888 #define DMABUF_MINORDER 1
889
890
891 static inline void dealloc_dmabuf(struct es1371_state *s, struct dmabuf *db)
892 {
893         struct page *page, *pend;
894
895         if (db->rawbuf) {
896                 /* undo marking the pages as reserved */
897                 pend = virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);
898                 for (page = virt_to_page(db->rawbuf); page <= pend; page++)
899                         ClearPageReserved(page);
900                 pci_free_consistent(s->dev, PAGE_SIZE << db->buforder, db->rawbuf, db->dmaaddr);
901         }
902         db->rawbuf = NULL;
903         db->mapped = db->ready = 0;
904 }
905
906 static int prog_dmabuf(struct es1371_state *s, struct dmabuf *db, unsigned rate, unsigned fmt, unsigned reg)
907 {
908         int order;
909         unsigned bytepersec;
910         unsigned bufs;
911         struct page *page, *pend;
912
913         db->hwptr = db->swptr = db->total_bytes = db->count = db->error = db->endcleared = 0;
914         if (!db->rawbuf) {
915                 db->ready = db->mapped = 0;
916                 for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--)
917                         if ((db->rawbuf = pci_alloc_consistent(s->dev, PAGE_SIZE << order, &db->dmaaddr)))
918                                 break;
919                 if (!db->rawbuf)
920                         return -ENOMEM;
921                 db->buforder = order;
922                 /* now mark the pages as reserved; otherwise remap_pfn_range doesn't do what we want */
923                 pend = virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);
924                 for (page = virt_to_page(db->rawbuf); page <= pend; page++)
925                         SetPageReserved(page);
926         }
927         fmt &= ES1371_FMT_MASK;
928         bytepersec = rate << sample_shift[fmt];
929         bufs = PAGE_SIZE << db->buforder;
930         if (db->ossfragshift) {
931                 if ((1000 << db->ossfragshift) < bytepersec)
932                         db->fragshift = ld2(bytepersec/1000);
933                 else
934                         db->fragshift = db->ossfragshift;
935         } else {
936                 db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1));
937                 if (db->fragshift < 3)
938                         db->fragshift = 3;
939         }
940         db->numfrag = bufs >> db->fragshift;
941         while (db->numfrag < 4 && db->fragshift > 3) {
942                 db->fragshift--;
943                 db->numfrag = bufs >> db->fragshift;
944         }
945         db->fragsize = 1 << db->fragshift;
946         if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
947                 db->numfrag = db->ossmaxfrags;
948         db->fragsamples = db->fragsize >> sample_shift[fmt];
949         db->dmasize = db->numfrag << db->fragshift;
950         memset(db->rawbuf, (fmt & ES1371_FMT_S16) ? 0 : 0x80, db->dmasize);
951         outl((reg >> 8) & 15, s->io+ES1371_REG_MEMPAGE);
952         outl(db->dmaaddr, s->io+(reg & 0xff));
953         outl((db->dmasize >> 2)-1, s->io+((reg + 4) & 0xff));
954         db->enabled = 1;
955         db->ready = 1;
956         return 0;
957 }
958
959 static inline int prog_dmabuf_adc(struct es1371_state *s)
960 {
961         stop_adc(s);
962         return prog_dmabuf(s, &s->dma_adc, s->adcrate, (s->sctrl >> SCTRL_SH_R1FMT) & ES1371_FMT_MASK, 
963                            ES1371_REG_ADC_FRAMEADR);
964 }
965
966 static inline int prog_dmabuf_dac2(struct es1371_state *s)
967 {
968         stop_dac2(s);
969         return prog_dmabuf(s, &s->dma_dac2, s->dac2rate, (s->sctrl >> SCTRL_SH_P2FMT) & ES1371_FMT_MASK, 
970                            ES1371_REG_DAC2_FRAMEADR);
971 }
972
973 static inline int prog_dmabuf_dac1(struct es1371_state *s)
974 {
975         stop_dac1(s);
976         return prog_dmabuf(s, &s->dma_dac1, s->dac1rate, (s->sctrl >> SCTRL_SH_P1FMT) & ES1371_FMT_MASK,
977                            ES1371_REG_DAC1_FRAMEADR);
978 }
979
980 static inline unsigned get_hwptr(struct es1371_state *s, struct dmabuf *db, unsigned reg)
981 {
982         unsigned hwptr, diff;
983
984         outl((reg >> 8) & 15, s->io+ES1371_REG_MEMPAGE);
985         hwptr = (inl(s->io+(reg & 0xff)) >> 14) & 0x3fffc;
986         diff = (db->dmasize + hwptr - db->hwptr) % db->dmasize;
987         db->hwptr = hwptr;
988         return diff;
989 }
990
991 static inline void clear_advance(void *buf, unsigned bsize, unsigned bptr, unsigned len, unsigned char c)
992 {
993         if (bptr + len > bsize) {
994                 unsigned x = bsize - bptr;
995                 memset(((char *)buf) + bptr, c, x);
996                 bptr = 0;
997                 len -= x;
998         }
999         memset(((char *)buf) + bptr, c, len);
1000 }
1001
1002 /* call with spinlock held! */
1003 static void es1371_update_ptr(struct es1371_state *s)
1004 {
1005         int diff;
1006
1007         /* update ADC pointer */
1008         if (s->ctrl & CTRL_ADC_EN) {
1009                 diff = get_hwptr(s, &s->dma_adc, ES1371_REG_ADC_FRAMECNT);
1010                 s->dma_adc.total_bytes += diff;
1011                 s->dma_adc.count += diff;
1012                 if (s->dma_adc.count >= (signed)s->dma_adc.fragsize) 
1013                         wake_up(&s->dma_adc.wait);
1014                 if (!s->dma_adc.mapped) {
1015                         if (s->dma_adc.count > (signed)(s->dma_adc.dmasize - ((3 * s->dma_adc.fragsize) >> 1))) {
1016                                 s->ctrl &= ~CTRL_ADC_EN;
1017                                 outl(s->ctrl, s->io+ES1371_REG_CONTROL);
1018                                 s->dma_adc.error++;
1019                         }
1020                 }
1021         }
1022         /* update DAC1 pointer */
1023         if (s->ctrl & CTRL_DAC1_EN) {
1024                 diff = get_hwptr(s, &s->dma_dac1, ES1371_REG_DAC1_FRAMECNT);
1025                 s->dma_dac1.total_bytes += diff;
1026                 if (s->dma_dac1.mapped) {
1027                         s->dma_dac1.count += diff;
1028                         if (s->dma_dac1.count >= (signed)s->dma_dac1.fragsize)
1029                                 wake_up(&s->dma_dac1.wait);
1030                 } else {
1031                         s->dma_dac1.count -= diff;
1032                         if (s->dma_dac1.count <= 0) {
1033                                 s->ctrl &= ~CTRL_DAC1_EN;
1034                                 outl(s->ctrl, s->io+ES1371_REG_CONTROL);
1035                                 s->dma_dac1.error++;
1036                         } else if (s->dma_dac1.count <= (signed)s->dma_dac1.fragsize && !s->dma_dac1.endcleared) {
1037                                 clear_advance(s->dma_dac1.rawbuf, s->dma_dac1.dmasize, s->dma_dac1.swptr, 
1038                                               s->dma_dac1.fragsize, (s->sctrl & SCTRL_P1SEB) ? 0 : 0x80);
1039                                 s->dma_dac1.endcleared = 1;
1040                         }
1041                         if (s->dma_dac1.count + (signed)s->dma_dac1.fragsize <= (signed)s->dma_dac1.dmasize)
1042                                 wake_up(&s->dma_dac1.wait);
1043                 }
1044         }
1045         /* update DAC2 pointer */
1046         if (s->ctrl & CTRL_DAC2_EN) {
1047                 diff = get_hwptr(s, &s->dma_dac2, ES1371_REG_DAC2_FRAMECNT);
1048                 s->dma_dac2.total_bytes += diff;
1049                 if (s->dma_dac2.mapped) {
1050                         s->dma_dac2.count += diff;
1051                         if (s->dma_dac2.count >= (signed)s->dma_dac2.fragsize)
1052                                 wake_up(&s->dma_dac2.wait);
1053                 } else {
1054                         s->dma_dac2.count -= diff;
1055                         if (s->dma_dac2.count <= 0) {
1056                                 s->ctrl &= ~CTRL_DAC2_EN;
1057                                 outl(s->ctrl, s->io+ES1371_REG_CONTROL);
1058                                 s->dma_dac2.error++;
1059                         } else if (s->dma_dac2.count <= (signed)s->dma_dac2.fragsize && !s->dma_dac2.endcleared) {
1060                                 clear_advance(s->dma_dac2.rawbuf, s->dma_dac2.dmasize, s->dma_dac2.swptr, 
1061                                               s->dma_dac2.fragsize, (s->sctrl & SCTRL_P2SEB) ? 0 : 0x80);
1062                                 s->dma_dac2.endcleared = 1;
1063                         }
1064                         if (s->dma_dac2.count + (signed)s->dma_dac2.fragsize <= (signed)s->dma_dac2.dmasize)
1065                                 wake_up(&s->dma_dac2.wait);
1066                 }
1067         }
1068 }
1069
1070 /* hold spinlock for the following! */
1071 static void es1371_handle_midi(struct es1371_state *s)
1072 {
1073         unsigned char ch;
1074         int wake;
1075
1076         if (!(s->ctrl & CTRL_UART_EN))
1077                 return;
1078         wake = 0;
1079         while (inb(s->io+ES1371_REG_UART_STATUS) & USTAT_RXRDY) {
1080                 ch = inb(s->io+ES1371_REG_UART_DATA);
1081                 if (s->midi.icnt < MIDIINBUF) {
1082                         s->midi.ibuf[s->midi.iwr] = ch;
1083                         s->midi.iwr = (s->midi.iwr + 1) % MIDIINBUF;
1084                         s->midi.icnt++;
1085                 }
1086                 wake = 1;
1087         }
1088         if (wake)
1089                 wake_up(&s->midi.iwait);
1090         wake = 0;
1091         while ((inb(s->io+ES1371_REG_UART_STATUS) & USTAT_TXRDY) && s->midi.ocnt > 0) {
1092                 outb(s->midi.obuf[s->midi.ord], s->io+ES1371_REG_UART_DATA);
1093                 s->midi.ord = (s->midi.ord + 1) % MIDIOUTBUF;
1094                 s->midi.ocnt--;
1095                 if (s->midi.ocnt < MIDIOUTBUF-16)
1096                         wake = 1;
1097         }
1098         if (wake)
1099                 wake_up(&s->midi.owait);
1100         outb((s->midi.ocnt > 0) ? UCTRL_RXINTEN | UCTRL_ENA_TXINT : UCTRL_RXINTEN, s->io+ES1371_REG_UART_CONTROL);
1101 }
1102
1103 static irqreturn_t es1371_interrupt(int irq, void *dev_id)
1104 {
1105         struct es1371_state *s = (struct es1371_state *)dev_id;
1106         unsigned int intsrc, sctl;
1107         
1108         /* fastpath out, to ease interrupt sharing */
1109         intsrc = inl(s->io+ES1371_REG_STATUS);
1110         if (!(intsrc & 0x80000000))
1111                 return IRQ_NONE;
1112         spin_lock(&s->lock);
1113         /* clear audio interrupts first */
1114         sctl = s->sctrl;
1115         if (intsrc & STAT_ADC)
1116                 sctl &= ~SCTRL_R1INTEN;
1117         if (intsrc & STAT_DAC1)
1118                 sctl &= ~SCTRL_P1INTEN;
1119         if (intsrc & STAT_DAC2)
1120                 sctl &= ~SCTRL_P2INTEN;
1121         outl(sctl, s->io+ES1371_REG_SERIAL_CONTROL);
1122         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1123         es1371_update_ptr(s);
1124         es1371_handle_midi(s);
1125         spin_unlock(&s->lock);
1126         return IRQ_HANDLED;
1127 }
1128
1129 /* --------------------------------------------------------------------- */
1130
1131 static const char invalid_magic[] = KERN_CRIT PFX "invalid magic value\n";
1132
1133 #define VALIDATE_STATE(s)                         \
1134 ({                                                \
1135         if (!(s) || (s)->magic != ES1371_MAGIC) { \
1136                 printk(invalid_magic);            \
1137                 return -ENXIO;                    \
1138         }                                         \
1139 })
1140
1141 /* --------------------------------------------------------------------- */
1142
1143 /* Conversion table for S/PDIF PCM volume emulation through the SRC */
1144 /* dB-linear table of DAC vol values; -0dB to -46.5dB with mute */
1145 static const unsigned short DACVolTable[101] =
1146 {
1147         0x1000, 0x0f2a, 0x0e60, 0x0da0, 0x0cea, 0x0c3e, 0x0b9a, 0x0aff,
1148         0x0a6d, 0x09e1, 0x095e, 0x08e1, 0x086a, 0x07fa, 0x078f, 0x072a,
1149         0x06cb, 0x0670, 0x061a, 0x05c9, 0x057b, 0x0532, 0x04ed, 0x04ab,
1150         0x046d, 0x0432, 0x03fa, 0x03c5, 0x0392, 0x0363, 0x0335, 0x030b,
1151         0x02e2, 0x02bc, 0x0297, 0x0275, 0x0254, 0x0235, 0x0217, 0x01fb,
1152         0x01e1, 0x01c8, 0x01b0, 0x0199, 0x0184, 0x0170, 0x015d, 0x014b,
1153         0x0139, 0x0129, 0x0119, 0x010b, 0x00fd, 0x00f0, 0x00e3, 0x00d7,
1154         0x00cc, 0x00c1, 0x00b7, 0x00ae, 0x00a5, 0x009c, 0x0094, 0x008c,
1155         0x0085, 0x007e, 0x0077, 0x0071, 0x006b, 0x0066, 0x0060, 0x005b,
1156         0x0057, 0x0052, 0x004e, 0x004a, 0x0046, 0x0042, 0x003f, 0x003c,
1157         0x0038, 0x0036, 0x0033, 0x0030, 0x002e, 0x002b, 0x0029, 0x0027,
1158         0x0025, 0x0023, 0x0021, 0x001f, 0x001e, 0x001c, 0x001b, 0x0019,
1159         0x0018, 0x0017, 0x0016, 0x0014, 0x0000
1160 };
1161
1162 /*
1163  * when we are in S/PDIF mode, we want to disable any analog output so
1164  * we filter the mixer ioctls 
1165  */
1166 static int mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg)
1167 {
1168         struct es1371_state *s = (struct es1371_state *)codec->private_data;
1169         int val;
1170         unsigned long flags;
1171         unsigned int left, right;
1172
1173         VALIDATE_STATE(s);
1174         /* filter mixer ioctls to catch PCM and MASTER volume when in S/PDIF mode */
1175         if (s->spdif_volume == -1)
1176                 return codec->mixer_ioctl(codec, cmd, arg);
1177         switch (cmd) {
1178         case SOUND_MIXER_WRITE_VOLUME:
1179                 return 0;
1180
1181         case SOUND_MIXER_WRITE_PCM:   /* use SRC for PCM volume */
1182                 if (get_user(val, (int __user *)arg))
1183                         return -EFAULT;
1184                 right = ((val >> 8)  & 0xff);
1185                 left = (val  & 0xff);
1186                 if (right > 100)
1187                         right = 100;
1188                 if (left > 100)
1189                         left = 100;
1190                 s->spdif_volume = (right << 8) | left;
1191                 spin_lock_irqsave(&s->lock, flags);
1192                 src_write(s, SRCREG_VOL_DAC2, DACVolTable[100 - left]);
1193                 src_write(s, SRCREG_VOL_DAC2+1, DACVolTable[100 - right]);
1194                 spin_unlock_irqrestore(&s->lock, flags);
1195                 return 0;
1196         
1197         case SOUND_MIXER_READ_PCM:
1198                 return put_user(s->spdif_volume, (int __user *)arg);
1199         }
1200         return codec->mixer_ioctl(codec, cmd, arg);
1201 }
1202
1203 /* --------------------------------------------------------------------- */
1204
1205 /*
1206  * AC97 Mixer Register to Connections mapping of the Concert 97 board
1207  *
1208  * AC97_MASTER_VOL_STEREO   Line Out
1209  * AC97_MASTER_VOL_MONO     TAD Output
1210  * AC97_PCBEEP_VOL          none
1211  * AC97_PHONE_VOL           TAD Input (mono)
1212  * AC97_MIC_VOL             MIC Input (mono)
1213  * AC97_LINEIN_VOL          Line Input (stereo)
1214  * AC97_CD_VOL              CD Input (stereo)
1215  * AC97_VIDEO_VOL           none
1216  * AC97_AUX_VOL             Aux Input (stereo)
1217  * AC97_PCMOUT_VOL          Wave Output (stereo)
1218  */
1219
1220 static int es1371_open_mixdev(struct inode *inode, struct file *file)
1221 {
1222         int minor = iminor(inode);
1223         struct list_head *list;
1224         struct es1371_state *s;
1225
1226         for (list = devs.next; ; list = list->next) {
1227                 if (list == &devs)
1228                         return -ENODEV;
1229                 s = list_entry(list, struct es1371_state, devs);
1230                 if (s->codec->dev_mixer == minor)
1231                         break;
1232         }
1233         VALIDATE_STATE(s);
1234         file->private_data = s;
1235         return nonseekable_open(inode, file);
1236 }
1237
1238 static int es1371_release_mixdev(struct inode *inode, struct file *file)
1239 {
1240         struct es1371_state *s = (struct es1371_state *)file->private_data;
1241         
1242         VALIDATE_STATE(s);
1243         return 0;
1244 }
1245
1246 static int es1371_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
1247 {
1248         struct es1371_state *s = (struct es1371_state *)file->private_data;
1249         struct ac97_codec *codec = s->codec;
1250
1251         return mixdev_ioctl(codec, cmd, arg);
1252 }
1253
1254 static /*const*/ struct file_operations es1371_mixer_fops = {
1255         .owner          = THIS_MODULE,
1256         .llseek         = no_llseek,
1257         .ioctl          = es1371_ioctl_mixdev,
1258         .open           = es1371_open_mixdev,
1259         .release        = es1371_release_mixdev,
1260 };
1261
1262 /* --------------------------------------------------------------------- */
1263
1264 static int drain_dac1(struct es1371_state *s, int nonblock)
1265 {
1266         DECLARE_WAITQUEUE(wait, current);
1267         unsigned long flags;
1268         int count, tmo;
1269         
1270         if (s->dma_dac1.mapped || !s->dma_dac1.ready)
1271                 return 0;
1272         add_wait_queue(&s->dma_dac1.wait, &wait);
1273         for (;;) {
1274                 __set_current_state(TASK_INTERRUPTIBLE);
1275                 spin_lock_irqsave(&s->lock, flags);
1276                 count = s->dma_dac1.count;
1277                 spin_unlock_irqrestore(&s->lock, flags);
1278                 if (count <= 0)
1279                         break;
1280                 if (signal_pending(current))
1281                         break;
1282                 if (nonblock) {
1283                         remove_wait_queue(&s->dma_dac1.wait, &wait);
1284                         set_current_state(TASK_RUNNING);
1285                         return -EBUSY;
1286                 }
1287                 tmo = 3 * HZ * (count + s->dma_dac1.fragsize) / 2 / s->dac1rate;
1288                 tmo >>= sample_shift[(s->sctrl & SCTRL_P1FMT) >> SCTRL_SH_P1FMT];
1289                 if (!schedule_timeout(tmo + 1))
1290                         DBG(printk(KERN_DEBUG PFX "dac1 dma timed out??\n");)
1291         }
1292         remove_wait_queue(&s->dma_dac1.wait, &wait);
1293         set_current_state(TASK_RUNNING);
1294         if (signal_pending(current))
1295                 return -ERESTARTSYS;
1296         return 0;
1297 }
1298
1299 static int drain_dac2(struct es1371_state *s, int nonblock)
1300 {
1301         DECLARE_WAITQUEUE(wait, current);
1302         unsigned long flags;
1303         int count, tmo;
1304
1305         if (s->dma_dac2.mapped || !s->dma_dac2.ready)
1306                 return 0;
1307         add_wait_queue(&s->dma_dac2.wait, &wait);
1308         for (;;) {
1309                 __set_current_state(TASK_UNINTERRUPTIBLE);
1310                 spin_lock_irqsave(&s->lock, flags);
1311                 count = s->dma_dac2.count;
1312                 spin_unlock_irqrestore(&s->lock, flags);
1313                 if (count <= 0)
1314                         break;
1315                 if (signal_pending(current))
1316                         break;
1317                 if (nonblock) {
1318                         remove_wait_queue(&s->dma_dac2.wait, &wait);
1319                         set_current_state(TASK_RUNNING);
1320                         return -EBUSY;
1321                 }
1322                 tmo = 3 * HZ * (count + s->dma_dac2.fragsize) / 2 / s->dac2rate;
1323                 tmo >>= sample_shift[(s->sctrl & SCTRL_P2FMT) >> SCTRL_SH_P2FMT];
1324                 if (!schedule_timeout(tmo + 1))
1325                         DBG(printk(KERN_DEBUG PFX "dac2 dma timed out??\n");)
1326         }
1327         remove_wait_queue(&s->dma_dac2.wait, &wait);
1328         set_current_state(TASK_RUNNING);
1329         if (signal_pending(current))
1330                 return -ERESTARTSYS;
1331         return 0;
1332 }
1333
1334 /* --------------------------------------------------------------------- */
1335
1336 static ssize_t es1371_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
1337 {
1338         struct es1371_state *s = (struct es1371_state *)file->private_data;
1339         DECLARE_WAITQUEUE(wait, current);
1340         ssize_t ret = 0;
1341         unsigned long flags;
1342         unsigned swptr;
1343         int cnt;
1344
1345         VALIDATE_STATE(s);
1346         if (s->dma_adc.mapped)
1347                 return -ENXIO;
1348         if (!access_ok(VERIFY_WRITE, buffer, count))
1349                 return -EFAULT;
1350         mutex_lock(&s->sem);
1351         if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
1352                 goto out2;
1353         
1354         add_wait_queue(&s->dma_adc.wait, &wait);
1355         while (count > 0) {
1356                 spin_lock_irqsave(&s->lock, flags);
1357                 swptr = s->dma_adc.swptr;
1358                 cnt = s->dma_adc.dmasize-swptr;
1359                 if (s->dma_adc.count < cnt)
1360                         cnt = s->dma_adc.count;
1361                 if (cnt <= 0)
1362                         __set_current_state(TASK_INTERRUPTIBLE);
1363                 spin_unlock_irqrestore(&s->lock, flags);
1364                 if (cnt > count)
1365                         cnt = count;
1366                 if (cnt <= 0) {
1367                         if (s->dma_adc.enabled)
1368                                 start_adc(s);
1369                         if (file->f_flags & O_NONBLOCK) {
1370                                 if (!ret)
1371                                         ret = -EAGAIN;
1372                                 goto out;
1373                         }
1374                         mutex_unlock(&s->sem);
1375                         schedule();
1376                         if (signal_pending(current)) {
1377                                 if (!ret)
1378                                         ret = -ERESTARTSYS;
1379                                 goto out2;
1380                         }
1381                         mutex_lock(&s->sem);
1382                         if (s->dma_adc.mapped)
1383                         {
1384                                 ret = -ENXIO;
1385                                 goto out;
1386                         }
1387                         continue;
1388                 }
1389                 if (copy_to_user(buffer, s->dma_adc.rawbuf + swptr, cnt)) {
1390                         if (!ret)
1391                                 ret = -EFAULT;
1392                         goto out;
1393                 }
1394                 swptr = (swptr + cnt) % s->dma_adc.dmasize;
1395                 spin_lock_irqsave(&s->lock, flags);
1396                 s->dma_adc.swptr = swptr;
1397                 s->dma_adc.count -= cnt;
1398                 spin_unlock_irqrestore(&s->lock, flags);
1399                 count -= cnt;
1400                 buffer += cnt;
1401                 ret += cnt;
1402                 if (s->dma_adc.enabled)
1403                         start_adc(s);
1404         }
1405 out:
1406         mutex_unlock(&s->sem);
1407 out2:
1408         remove_wait_queue(&s->dma_adc.wait, &wait);
1409         set_current_state(TASK_RUNNING);
1410         return ret;
1411 }
1412
1413 static ssize_t es1371_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
1414 {
1415         struct es1371_state *s = (struct es1371_state *)file->private_data;
1416         DECLARE_WAITQUEUE(wait, current);
1417         ssize_t ret;
1418         unsigned long flags;
1419         unsigned swptr;
1420         int cnt;
1421
1422         VALIDATE_STATE(s);
1423         if (s->dma_dac2.mapped)
1424                 return -ENXIO;
1425         if (!access_ok(VERIFY_READ, buffer, count))
1426                 return -EFAULT;
1427         mutex_lock(&s->sem);
1428         if (!s->dma_dac2.ready && (ret = prog_dmabuf_dac2(s)))
1429                 goto out3;
1430         ret = 0;
1431         add_wait_queue(&s->dma_dac2.wait, &wait);
1432         while (count > 0) {
1433                 spin_lock_irqsave(&s->lock, flags);
1434                 if (s->dma_dac2.count < 0) {
1435                         s->dma_dac2.count = 0;
1436                         s->dma_dac2.swptr = s->dma_dac2.hwptr;
1437                 }
1438                 swptr = s->dma_dac2.swptr;
1439                 cnt = s->dma_dac2.dmasize-swptr;
1440                 if (s->dma_dac2.count + cnt > s->dma_dac2.dmasize)
1441                         cnt = s->dma_dac2.dmasize - s->dma_dac2.count;
1442                 if (cnt <= 0)
1443                         __set_current_state(TASK_INTERRUPTIBLE);
1444                 spin_unlock_irqrestore(&s->lock, flags);
1445                 if (cnt > count)
1446                         cnt = count;
1447                 if (cnt <= 0) {
1448                         if (s->dma_dac2.enabled)
1449                                 start_dac2(s);
1450                         if (file->f_flags & O_NONBLOCK) {
1451                                 if (!ret)
1452                                         ret = -EAGAIN;
1453                                 goto out;
1454                         }       
1455                         mutex_unlock(&s->sem);
1456                         schedule();
1457                         if (signal_pending(current)) {
1458                                 if (!ret)
1459                                         ret = -ERESTARTSYS;
1460                                 goto out2;
1461                         }
1462                         mutex_lock(&s->sem);
1463                         if (s->dma_dac2.mapped)
1464                         {
1465                                 ret = -ENXIO;
1466                                 goto out;
1467                         }
1468                         continue;
1469                 }
1470                 if (copy_from_user(s->dma_dac2.rawbuf + swptr, buffer, cnt)) {
1471                         if (!ret)
1472                                 ret = -EFAULT;
1473                         goto out;
1474                 }
1475                 swptr = (swptr + cnt) % s->dma_dac2.dmasize;
1476                 spin_lock_irqsave(&s->lock, flags);
1477                 s->dma_dac2.swptr = swptr;
1478                 s->dma_dac2.count += cnt;
1479                 s->dma_dac2.endcleared = 0;
1480                 spin_unlock_irqrestore(&s->lock, flags);
1481                 count -= cnt;
1482                 buffer += cnt;
1483                 ret += cnt;
1484                 if (s->dma_dac2.enabled)
1485                         start_dac2(s);
1486         }
1487 out:
1488         mutex_unlock(&s->sem);
1489 out2:
1490         remove_wait_queue(&s->dma_dac2.wait, &wait);
1491 out3:   
1492         set_current_state(TASK_RUNNING);
1493         return ret;
1494 }
1495
1496 /* No kernel lock - we have our own spinlock */
1497 static unsigned int es1371_poll(struct file *file, struct poll_table_struct *wait)
1498 {
1499         struct es1371_state *s = (struct es1371_state *)file->private_data;
1500         unsigned long flags;
1501         unsigned int mask = 0;
1502
1503         VALIDATE_STATE(s);
1504         if (file->f_mode & FMODE_WRITE) {
1505                 if (!s->dma_dac2.ready && prog_dmabuf_dac2(s))
1506                         return 0;
1507                 poll_wait(file, &s->dma_dac2.wait, wait);
1508         }
1509         if (file->f_mode & FMODE_READ) {
1510                 if (!s->dma_adc.ready && prog_dmabuf_adc(s))
1511                         return 0;
1512                 poll_wait(file, &s->dma_adc.wait, wait);
1513         }
1514         spin_lock_irqsave(&s->lock, flags);
1515         es1371_update_ptr(s);
1516         if (file->f_mode & FMODE_READ) {
1517                         if (s->dma_adc.count >= (signed)s->dma_adc.fragsize)
1518                                 mask |= POLLIN | POLLRDNORM;
1519         }
1520         if (file->f_mode & FMODE_WRITE) {
1521                 if (s->dma_dac2.mapped) {
1522                         if (s->dma_dac2.count >= (signed)s->dma_dac2.fragsize) 
1523                                 mask |= POLLOUT | POLLWRNORM;
1524                 } else {
1525                         if ((signed)s->dma_dac2.dmasize >= s->dma_dac2.count + (signed)s->dma_dac2.fragsize)
1526                                 mask |= POLLOUT | POLLWRNORM;
1527                 }
1528         }
1529         spin_unlock_irqrestore(&s->lock, flags);
1530         return mask;
1531 }
1532
1533 static int es1371_mmap(struct file *file, struct vm_area_struct *vma)
1534 {
1535         struct es1371_state *s = (struct es1371_state *)file->private_data;
1536         struct dmabuf *db;
1537         int ret = 0;
1538         unsigned long size;
1539
1540         VALIDATE_STATE(s);
1541         lock_kernel();
1542         mutex_lock(&s->sem);
1543         
1544         if (vma->vm_flags & VM_WRITE) {
1545                 if ((ret = prog_dmabuf_dac2(s)) != 0) {
1546                         goto out;
1547                 }
1548                 db = &s->dma_dac2;
1549         } else if (vma->vm_flags & VM_READ) {
1550                 if ((ret = prog_dmabuf_adc(s)) != 0) {
1551                         goto out;
1552                 }
1553                 db = &s->dma_adc;
1554         } else {
1555                 ret = -EINVAL;
1556                 goto out;
1557         }
1558         if (vma->vm_pgoff != 0) {
1559                 ret = -EINVAL;
1560                 goto out;
1561         }
1562         size = vma->vm_end - vma->vm_start;
1563         if (size > (PAGE_SIZE << db->buforder)) {
1564                 ret = -EINVAL;
1565                 goto out;
1566         }
1567         if (remap_pfn_range(vma, vma->vm_start,
1568                                 virt_to_phys(db->rawbuf) >> PAGE_SHIFT,
1569                                 size, vma->vm_page_prot)) {
1570                 ret = -EAGAIN;
1571                 goto out;
1572         }
1573         db->mapped = 1;
1574 out:
1575         mutex_unlock(&s->sem);
1576         unlock_kernel();
1577         return ret;
1578 }
1579
1580 static int es1371_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
1581 {
1582         struct es1371_state *s = (struct es1371_state *)file->private_data;
1583         unsigned long flags;
1584         audio_buf_info abinfo;
1585         count_info cinfo;
1586         int count;
1587         int val, mapped, ret;
1588         void __user *argp = (void __user *)arg;
1589         int __user *p = argp;
1590
1591         VALIDATE_STATE(s);
1592         mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac2.mapped) ||
1593                 ((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
1594         switch (cmd) {
1595         case OSS_GETVERSION:
1596                 return put_user(SOUND_VERSION, p);
1597
1598         case SNDCTL_DSP_SYNC:
1599                 if (file->f_mode & FMODE_WRITE)
1600                         return drain_dac2(s, 0/*file->f_flags & O_NONBLOCK*/);
1601                 return 0;
1602                 
1603         case SNDCTL_DSP_SETDUPLEX:
1604                 return 0;
1605
1606         case SNDCTL_DSP_GETCAPS:
1607                 return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER | DSP_CAP_MMAP, p);
1608                 
1609         case SNDCTL_DSP_RESET:
1610                 if (file->f_mode & FMODE_WRITE) {
1611                         stop_dac2(s);
1612                         synchronize_irq(s->irq);
1613                         s->dma_dac2.swptr = s->dma_dac2.hwptr = s->dma_dac2.count = s->dma_dac2.total_bytes = 0;
1614                 }
1615                 if (file->f_mode & FMODE_READ) {
1616                         stop_adc(s);
1617                         synchronize_irq(s->irq);
1618                         s->dma_adc.swptr = s->dma_adc.hwptr = s->dma_adc.count = s->dma_adc.total_bytes = 0;
1619                 }
1620                 return 0;
1621
1622         case SNDCTL_DSP_SPEED:
1623                 if (get_user(val, p))
1624                         return -EFAULT;
1625                 if (val >= 0) {
1626                         if (file->f_mode & FMODE_READ) {
1627                                 stop_adc(s);
1628                                 s->dma_adc.ready = 0;
1629                                 set_adc_rate(s, val);
1630                         }
1631                         if (file->f_mode & FMODE_WRITE) {
1632                                 stop_dac2(s);
1633                                 s->dma_dac2.ready = 0;
1634                                 set_dac2_rate(s, val);
1635                         }
1636                 }
1637                 return put_user((file->f_mode & FMODE_READ) ? s->adcrate : s->dac2rate, p);
1638
1639         case SNDCTL_DSP_STEREO:
1640                 if (get_user(val, p))
1641                         return -EFAULT;
1642                 if (file->f_mode & FMODE_READ) {
1643                         stop_adc(s);
1644                         s->dma_adc.ready = 0;
1645                         spin_lock_irqsave(&s->lock, flags);
1646                         if (val)
1647                                 s->sctrl |= SCTRL_R1SMB;
1648                         else
1649                                 s->sctrl &= ~SCTRL_R1SMB;
1650                         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1651                         spin_unlock_irqrestore(&s->lock, flags);
1652                 }
1653                 if (file->f_mode & FMODE_WRITE) {
1654                         stop_dac2(s);
1655                         s->dma_dac2.ready = 0;
1656                         spin_lock_irqsave(&s->lock, flags);
1657                         if (val)
1658                                 s->sctrl |= SCTRL_P2SMB;
1659                         else
1660                                 s->sctrl &= ~SCTRL_P2SMB;
1661                         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1662                         spin_unlock_irqrestore(&s->lock, flags);
1663                 }
1664                 return 0;
1665
1666         case SNDCTL_DSP_CHANNELS:
1667                 if (get_user(val, p))
1668                         return -EFAULT;
1669                 if (val != 0) {
1670                         if (file->f_mode & FMODE_READ) {
1671                                 stop_adc(s);
1672                                 s->dma_adc.ready = 0;
1673                                 spin_lock_irqsave(&s->lock, flags);
1674                                 if (val >= 2)
1675                                         s->sctrl |= SCTRL_R1SMB;
1676                                 else
1677                                         s->sctrl &= ~SCTRL_R1SMB;
1678                                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1679                                 spin_unlock_irqrestore(&s->lock, flags);
1680                         }
1681                         if (file->f_mode & FMODE_WRITE) {
1682                                 stop_dac2(s);
1683                                 s->dma_dac2.ready = 0;
1684                                 spin_lock_irqsave(&s->lock, flags);
1685                                 if (val >= 2)
1686                                         s->sctrl |= SCTRL_P2SMB;
1687                                 else
1688                                         s->sctrl &= ~SCTRL_P2SMB;
1689                                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1690                                 spin_unlock_irqrestore(&s->lock, flags);
1691                         }
1692                 }
1693                 return put_user((s->sctrl & ((file->f_mode & FMODE_READ) ? SCTRL_R1SMB : SCTRL_P2SMB)) ? 2 : 1, p);
1694                 
1695         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
1696                 return put_user(AFMT_S16_LE|AFMT_U8, p);
1697                 
1698         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
1699                 if (get_user(val, p))
1700                         return -EFAULT;
1701                 if (val != AFMT_QUERY) {
1702                         if (file->f_mode & FMODE_READ) {
1703                                 stop_adc(s);
1704                                 s->dma_adc.ready = 0;
1705                                 spin_lock_irqsave(&s->lock, flags);
1706                                 if (val == AFMT_S16_LE)
1707                                         s->sctrl |= SCTRL_R1SEB;
1708                                 else
1709                                         s->sctrl &= ~SCTRL_R1SEB;
1710                                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1711                                 spin_unlock_irqrestore(&s->lock, flags);
1712                         }
1713                         if (file->f_mode & FMODE_WRITE) {
1714                                 stop_dac2(s);
1715                                 s->dma_dac2.ready = 0;
1716                                 spin_lock_irqsave(&s->lock, flags);
1717                                 if (val == AFMT_S16_LE)
1718                                         s->sctrl |= SCTRL_P2SEB;
1719                                 else
1720                                         s->sctrl &= ~SCTRL_P2SEB;
1721                                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1722                                 spin_unlock_irqrestore(&s->lock, flags);
1723                         }
1724                 }
1725                 return put_user((s->sctrl & ((file->f_mode & FMODE_READ) ? SCTRL_R1SEB : SCTRL_P2SEB)) ? 
1726                                 AFMT_S16_LE : AFMT_U8, p);
1727                 
1728         case SNDCTL_DSP_POST:
1729                 return 0;
1730
1731         case SNDCTL_DSP_GETTRIGGER:
1732                 val = 0;
1733                 if (file->f_mode & FMODE_READ && s->ctrl & CTRL_ADC_EN) 
1734                         val |= PCM_ENABLE_INPUT;
1735                 if (file->f_mode & FMODE_WRITE && s->ctrl & CTRL_DAC2_EN) 
1736                         val |= PCM_ENABLE_OUTPUT;
1737                 return put_user(val, p);
1738                 
1739         case SNDCTL_DSP_SETTRIGGER:
1740                 if (get_user(val, p))
1741                         return -EFAULT;
1742                 if (file->f_mode & FMODE_READ) {
1743                         if (val & PCM_ENABLE_INPUT) {
1744                                 if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
1745                                         return ret;
1746                                 s->dma_adc.enabled = 1;
1747                                 start_adc(s);
1748                         } else {
1749                                 s->dma_adc.enabled = 0;
1750                                 stop_adc(s);
1751                         }
1752                 }
1753                 if (file->f_mode & FMODE_WRITE) {
1754                         if (val & PCM_ENABLE_OUTPUT) {
1755                                 if (!s->dma_dac2.ready && (ret = prog_dmabuf_dac2(s)))
1756                                         return ret;
1757                                 s->dma_dac2.enabled = 1;
1758                                 start_dac2(s);
1759                         } else {
1760                                 s->dma_dac2.enabled = 0;
1761                                 stop_dac2(s);
1762                         }
1763                 }
1764                 return 0;
1765
1766         case SNDCTL_DSP_GETOSPACE:
1767                 if (!(file->f_mode & FMODE_WRITE))
1768                         return -EINVAL;
1769                 if (!s->dma_dac2.ready && (val = prog_dmabuf_dac2(s)) != 0)
1770                         return val;
1771                 spin_lock_irqsave(&s->lock, flags);
1772                 es1371_update_ptr(s);
1773                 abinfo.fragsize = s->dma_dac2.fragsize;
1774                 count = s->dma_dac2.count;
1775                 if (count < 0)
1776                         count = 0;
1777                 abinfo.bytes = s->dma_dac2.dmasize - count;
1778                 abinfo.fragstotal = s->dma_dac2.numfrag;
1779                 abinfo.fragments = abinfo.bytes >> s->dma_dac2.fragshift;      
1780                 spin_unlock_irqrestore(&s->lock, flags);
1781                 return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
1782
1783         case SNDCTL_DSP_GETISPACE:
1784                 if (!(file->f_mode & FMODE_READ))
1785                         return -EINVAL;
1786                 if (!s->dma_adc.ready && (val = prog_dmabuf_adc(s)) != 0)
1787                         return val;
1788                 spin_lock_irqsave(&s->lock, flags);
1789                 es1371_update_ptr(s);
1790                 abinfo.fragsize = s->dma_adc.fragsize;
1791                 count = s->dma_adc.count;
1792                 if (count < 0)
1793                         count = 0;
1794                 abinfo.bytes = count;
1795                 abinfo.fragstotal = s->dma_adc.numfrag;
1796                 abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift;      
1797                 spin_unlock_irqrestore(&s->lock, flags);
1798                 return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
1799                 
1800         case SNDCTL_DSP_NONBLOCK:
1801                 file->f_flags |= O_NONBLOCK;
1802                 return 0;
1803
1804         case SNDCTL_DSP_GETODELAY:
1805                 if (!(file->f_mode & FMODE_WRITE))
1806                         return -EINVAL;
1807                 if (!s->dma_dac2.ready && (val = prog_dmabuf_dac2(s)) != 0)
1808                         return val;
1809                 spin_lock_irqsave(&s->lock, flags);
1810                 es1371_update_ptr(s);
1811                 count = s->dma_dac2.count;
1812                 spin_unlock_irqrestore(&s->lock, flags);
1813                 if (count < 0)
1814                         count = 0;
1815                 return put_user(count, p);
1816
1817         case SNDCTL_DSP_GETIPTR:
1818                 if (!(file->f_mode & FMODE_READ))
1819                         return -EINVAL;
1820                 if (!s->dma_adc.ready && (val = prog_dmabuf_adc(s)) != 0)
1821                         return val;
1822                 spin_lock_irqsave(&s->lock, flags);
1823                 es1371_update_ptr(s);
1824                 cinfo.bytes = s->dma_adc.total_bytes;
1825                 count = s->dma_adc.count;
1826                 if (count < 0)
1827                         count = 0;
1828                 cinfo.blocks = count >> s->dma_adc.fragshift;
1829                 cinfo.ptr = s->dma_adc.hwptr;
1830                 if (s->dma_adc.mapped)
1831                         s->dma_adc.count &= s->dma_adc.fragsize-1;
1832                 spin_unlock_irqrestore(&s->lock, flags);
1833                 if (copy_to_user(argp, &cinfo, sizeof(cinfo)))
1834                         return -EFAULT;
1835                 return 0;
1836
1837         case SNDCTL_DSP_GETOPTR:
1838                 if (!(file->f_mode & FMODE_WRITE))
1839                         return -EINVAL;
1840                 if (!s->dma_dac2.ready && (val = prog_dmabuf_dac2(s)) != 0)
1841                         return val;
1842                 spin_lock_irqsave(&s->lock, flags);
1843                 es1371_update_ptr(s);
1844                 cinfo.bytes = s->dma_dac2.total_bytes;
1845                 count = s->dma_dac2.count;
1846                 if (count < 0)
1847                         count = 0;
1848                 cinfo.blocks = count >> s->dma_dac2.fragshift;
1849                 cinfo.ptr = s->dma_dac2.hwptr;
1850                 if (s->dma_dac2.mapped)
1851                         s->dma_dac2.count &= s->dma_dac2.fragsize-1;
1852                 spin_unlock_irqrestore(&s->lock, flags);
1853                 if (copy_to_user(argp, &cinfo, sizeof(cinfo)))
1854                         return -EFAULT;
1855                 return 0;
1856
1857         case SNDCTL_DSP_GETBLKSIZE:
1858                 if (file->f_mode & FMODE_WRITE) {
1859                         if ((val = prog_dmabuf_dac2(s)))
1860                                 return val;
1861                         return put_user(s->dma_dac2.fragsize, p);
1862                 }
1863                 if ((val = prog_dmabuf_adc(s)))
1864                         return val;
1865                 return put_user(s->dma_adc.fragsize, p);
1866
1867         case SNDCTL_DSP_SETFRAGMENT:
1868                 if (get_user(val, p))
1869                         return -EFAULT;
1870                 if (file->f_mode & FMODE_READ) {
1871                         s->dma_adc.ossfragshift = val & 0xffff;
1872                         s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff;
1873                         if (s->dma_adc.ossfragshift < 4)
1874                                 s->dma_adc.ossfragshift = 4;
1875                         if (s->dma_adc.ossfragshift > 15)
1876                                 s->dma_adc.ossfragshift = 15;
1877                         if (s->dma_adc.ossmaxfrags < 4)
1878                                 s->dma_adc.ossmaxfrags = 4;
1879                 }
1880                 if (file->f_mode & FMODE_WRITE) {
1881                         s->dma_dac2.ossfragshift = val & 0xffff;
1882                         s->dma_dac2.ossmaxfrags = (val >> 16) & 0xffff;
1883                         if (s->dma_dac2.ossfragshift < 4)
1884                                 s->dma_dac2.ossfragshift = 4;
1885                         if (s->dma_dac2.ossfragshift > 15)
1886                                 s->dma_dac2.ossfragshift = 15;
1887                         if (s->dma_dac2.ossmaxfrags < 4)
1888                                 s->dma_dac2.ossmaxfrags = 4;
1889                 }
1890                 return 0;
1891
1892         case SNDCTL_DSP_SUBDIVIDE:
1893                 if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) ||
1894                     (file->f_mode & FMODE_WRITE && s->dma_dac2.subdivision))
1895                         return -EINVAL;
1896                 if (get_user(val, p))
1897                         return -EFAULT;
1898                 if (val != 1 && val != 2 && val != 4)
1899                         return -EINVAL;
1900                 if (file->f_mode & FMODE_READ)
1901                         s->dma_adc.subdivision = val;
1902                 if (file->f_mode & FMODE_WRITE)
1903                         s->dma_dac2.subdivision = val;
1904                 return 0;
1905
1906         case SOUND_PCM_READ_RATE:
1907                 return put_user((file->f_mode & FMODE_READ) ? s->adcrate : s->dac2rate, p);
1908
1909         case SOUND_PCM_READ_CHANNELS:
1910                 return put_user((s->sctrl & ((file->f_mode & FMODE_READ) ? SCTRL_R1SMB : SCTRL_P2SMB)) ? 2 : 1, p);
1911                 
1912         case SOUND_PCM_READ_BITS:
1913                 return put_user((s->sctrl & ((file->f_mode & FMODE_READ) ? SCTRL_R1SEB : SCTRL_P2SEB)) ? 16 : 8, p);
1914
1915         case SOUND_PCM_WRITE_FILTER:
1916         case SNDCTL_DSP_SETSYNCRO:
1917         case SOUND_PCM_READ_FILTER:
1918                 return -EINVAL;
1919                 
1920         }
1921         return mixdev_ioctl(s->codec, cmd, arg);
1922 }
1923
1924 static int es1371_open(struct inode *inode, struct file *file)
1925 {
1926         int minor = iminor(inode);
1927         DECLARE_WAITQUEUE(wait, current);
1928         unsigned long flags;
1929         struct list_head *list;
1930         struct es1371_state *s;
1931
1932         for (list = devs.next; ; list = list->next) {
1933                 if (list == &devs)
1934                         return -ENODEV;
1935                 s = list_entry(list, struct es1371_state, devs);
1936                 if (!((s->dev_audio ^ minor) & ~0xf))
1937                         break;
1938         }
1939         VALIDATE_STATE(s);
1940         file->private_data = s;
1941         /* wait for device to become free */
1942         mutex_lock(&s->open_mutex);
1943         while (s->open_mode & file->f_mode) {
1944                 if (file->f_flags & O_NONBLOCK) {
1945                         mutex_unlock(&s->open_mutex);
1946                         return -EBUSY;
1947                 }
1948                 add_wait_queue(&s->open_wait, &wait);
1949                 __set_current_state(TASK_INTERRUPTIBLE);
1950                 mutex_unlock(&s->open_mutex);
1951                 schedule();
1952                 remove_wait_queue(&s->open_wait, &wait);
1953                 set_current_state(TASK_RUNNING);
1954                 if (signal_pending(current))
1955                         return -ERESTARTSYS;
1956                 mutex_lock(&s->open_mutex);
1957         }
1958         if (file->f_mode & FMODE_READ) {
1959                 s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags = s->dma_adc.subdivision = 0;
1960                 s->dma_adc.enabled = 1;
1961                 set_adc_rate(s, 8000);
1962         }
1963         if (file->f_mode & FMODE_WRITE) {
1964                 s->dma_dac2.ossfragshift = s->dma_dac2.ossmaxfrags = s->dma_dac2.subdivision = 0;
1965                 s->dma_dac2.enabled = 1;
1966                 set_dac2_rate(s, 8000);
1967         }
1968         spin_lock_irqsave(&s->lock, flags);
1969         if (file->f_mode & FMODE_READ) {
1970                 s->sctrl &= ~SCTRL_R1FMT;
1971                 if ((minor & 0xf) == SND_DEV_DSP16)
1972                         s->sctrl |= ES1371_FMT_S16_MONO << SCTRL_SH_R1FMT;
1973                 else
1974                         s->sctrl |= ES1371_FMT_U8_MONO << SCTRL_SH_R1FMT;
1975         }
1976         if (file->f_mode & FMODE_WRITE) {
1977                 s->sctrl &= ~SCTRL_P2FMT;
1978                 if ((minor & 0xf) == SND_DEV_DSP16)
1979                         s->sctrl |= ES1371_FMT_S16_MONO << SCTRL_SH_P2FMT;
1980                 else
1981                         s->sctrl |= ES1371_FMT_U8_MONO << SCTRL_SH_P2FMT;
1982         }
1983         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
1984         spin_unlock_irqrestore(&s->lock, flags);
1985         s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
1986         mutex_unlock(&s->open_mutex);
1987         mutex_init(&s->sem);
1988         return nonseekable_open(inode, file);
1989 }
1990
1991 static int es1371_release(struct inode *inode, struct file *file)
1992 {
1993         struct es1371_state *s = (struct es1371_state *)file->private_data;
1994
1995         VALIDATE_STATE(s);
1996         lock_kernel();
1997         if (file->f_mode & FMODE_WRITE)
1998                 drain_dac2(s, file->f_flags & O_NONBLOCK);
1999         mutex_lock(&s->open_mutex);
2000         if (file->f_mode & FMODE_WRITE) {
2001                 stop_dac2(s);
2002                 dealloc_dmabuf(s, &s->dma_dac2);
2003         }
2004         if (file->f_mode & FMODE_READ) {
2005                 stop_adc(s);
2006                 dealloc_dmabuf(s, &s->dma_adc);
2007         }
2008         s->open_mode &= ~(file->f_mode & (FMODE_READ|FMODE_WRITE));
2009         mutex_unlock(&s->open_mutex);
2010         wake_up(&s->open_wait);
2011         unlock_kernel();
2012         return 0;
2013 }
2014
2015 static /*const*/ struct file_operations es1371_audio_fops = {
2016         .owner          = THIS_MODULE,
2017         .llseek         = no_llseek,
2018         .read           = es1371_read,
2019         .write          = es1371_write,
2020         .poll           = es1371_poll,
2021         .ioctl          = es1371_ioctl,
2022         .mmap           = es1371_mmap,
2023         .open           = es1371_open,
2024         .release        = es1371_release,
2025 };
2026
2027 /* --------------------------------------------------------------------- */
2028
2029 static ssize_t es1371_write_dac(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
2030 {
2031         struct es1371_state *s = (struct es1371_state *)file->private_data;
2032         DECLARE_WAITQUEUE(wait, current);
2033         ssize_t ret = 0;
2034         unsigned long flags;
2035         unsigned swptr;
2036         int cnt;
2037
2038         VALIDATE_STATE(s);
2039         if (s->dma_dac1.mapped)
2040                 return -ENXIO;
2041         if (!s->dma_dac1.ready && (ret = prog_dmabuf_dac1(s)))
2042                 return ret;
2043         if (!access_ok(VERIFY_READ, buffer, count))
2044                 return -EFAULT;
2045         add_wait_queue(&s->dma_dac1.wait, &wait);
2046         while (count > 0) {
2047                 spin_lock_irqsave(&s->lock, flags);
2048                 if (s->dma_dac1.count < 0) {
2049                         s->dma_dac1.count = 0;
2050                         s->dma_dac1.swptr = s->dma_dac1.hwptr;
2051                 }
2052                 swptr = s->dma_dac1.swptr;
2053                 cnt = s->dma_dac1.dmasize-swptr;
2054                 if (s->dma_dac1.count + cnt > s->dma_dac1.dmasize)
2055                         cnt = s->dma_dac1.dmasize - s->dma_dac1.count;
2056                 if (cnt <= 0)
2057                         __set_current_state(TASK_INTERRUPTIBLE);
2058                 spin_unlock_irqrestore(&s->lock, flags);
2059                 if (cnt > count)
2060                         cnt = count;
2061                 if (cnt <= 0) {
2062                         if (s->dma_dac1.enabled)
2063                                 start_dac1(s);
2064                         if (file->f_flags & O_NONBLOCK) {
2065                                 if (!ret)
2066                                         ret = -EAGAIN;
2067                                 break;
2068                         }
2069                         schedule();
2070                         if (signal_pending(current)) {
2071                                 if (!ret)
2072                                         ret = -ERESTARTSYS;
2073                                 break;
2074                         }
2075                         continue;
2076                 }
2077                 if (copy_from_user(s->dma_dac1.rawbuf + swptr, buffer, cnt)) {
2078                         if (!ret)
2079                                 ret = -EFAULT;
2080                         break;
2081                 }
2082                 swptr = (swptr + cnt) % s->dma_dac1.dmasize;
2083                 spin_lock_irqsave(&s->lock, flags);
2084                 s->dma_dac1.swptr = swptr;
2085                 s->dma_dac1.count += cnt;
2086                 s->dma_dac1.endcleared = 0;
2087                 spin_unlock_irqrestore(&s->lock, flags);
2088                 count -= cnt;
2089                 buffer += cnt;
2090                 ret += cnt;
2091                 if (s->dma_dac1.enabled)
2092                         start_dac1(s);
2093         }
2094         remove_wait_queue(&s->dma_dac1.wait, &wait);
2095         set_current_state(TASK_RUNNING);
2096         return ret;
2097 }
2098
2099 /* No kernel lock - we have our own spinlock */
2100 static unsigned int es1371_poll_dac(struct file *file, struct poll_table_struct *wait)
2101 {
2102         struct es1371_state *s = (struct es1371_state *)file->private_data;
2103         unsigned long flags;
2104         unsigned int mask = 0;
2105
2106         VALIDATE_STATE(s);
2107         if (!s->dma_dac1.ready && prog_dmabuf_dac1(s))
2108                 return 0;
2109         poll_wait(file, &s->dma_dac1.wait, wait);
2110         spin_lock_irqsave(&s->lock, flags);
2111         es1371_update_ptr(s);
2112         if (s->dma_dac1.mapped) {
2113                 if (s->dma_dac1.count >= (signed)s->dma_dac1.fragsize)
2114                         mask |= POLLOUT | POLLWRNORM;
2115         } else {
2116                 if ((signed)s->dma_dac1.dmasize >= s->dma_dac1.count + (signed)s->dma_dac1.fragsize)
2117                         mask |= POLLOUT | POLLWRNORM;
2118         }
2119         spin_unlock_irqrestore(&s->lock, flags);
2120         return mask;
2121 }
2122
2123 static int es1371_mmap_dac(struct file *file, struct vm_area_struct *vma)
2124 {
2125         struct es1371_state *s = (struct es1371_state *)file->private_data;
2126         int ret;
2127         unsigned long size;
2128
2129         VALIDATE_STATE(s);
2130         if (!(vma->vm_flags & VM_WRITE))
2131                 return -EINVAL;
2132         lock_kernel();
2133         if ((ret = prog_dmabuf_dac1(s)) != 0)
2134                 goto out;
2135         ret = -EINVAL;
2136         if (vma->vm_pgoff != 0)
2137                 goto out;
2138         size = vma->vm_end - vma->vm_start;
2139         if (size > (PAGE_SIZE << s->dma_dac1.buforder))
2140                 goto out;
2141         ret = -EAGAIN;
2142         if (remap_pfn_range(vma, vma->vm_start,
2143                         virt_to_phys(s->dma_dac1.rawbuf) >> PAGE_SHIFT,
2144                         size, vma->vm_page_prot))
2145                 goto out;
2146         s->dma_dac1.mapped = 1;
2147         ret = 0;
2148 out:
2149         unlock_kernel();
2150         return ret;
2151 }
2152
2153 static int es1371_ioctl_dac(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
2154 {
2155         struct es1371_state *s = (struct es1371_state *)file->private_data;
2156         unsigned long flags;
2157         audio_buf_info abinfo;
2158         count_info cinfo;
2159         int count;
2160         int val, ret;
2161         int __user *p = (int __user *)arg;
2162
2163         VALIDATE_STATE(s);
2164         switch (cmd) {
2165         case OSS_GETVERSION:
2166                 return put_user(SOUND_VERSION, p);
2167
2168         case SNDCTL_DSP_SYNC:
2169                 return drain_dac1(s, 0/*file->f_flags & O_NONBLOCK*/);
2170                 
2171         case SNDCTL_DSP_SETDUPLEX:
2172                 return -EINVAL;
2173
2174         case SNDCTL_DSP_GETCAPS:
2175                 return put_user(DSP_CAP_REALTIME | DSP_CAP_TRIGGER | DSP_CAP_MMAP, p);
2176                 
2177         case SNDCTL_DSP_RESET:
2178                 stop_dac1(s);
2179                 synchronize_irq(s->irq);
2180                 s->dma_dac1.swptr = s->dma_dac1.hwptr = s->dma_dac1.count = s->dma_dac1.total_bytes = 0;
2181                 return 0;
2182
2183         case SNDCTL_DSP_SPEED:
2184                 if (get_user(val, p))
2185                         return -EFAULT;
2186                 if (val >= 0) {
2187                         stop_dac1(s);
2188                         s->dma_dac1.ready = 0;
2189                         set_dac1_rate(s, val);
2190                 }
2191                 return put_user(s->dac1rate, p);
2192
2193         case SNDCTL_DSP_STEREO:
2194                 if (get_user(val, p))
2195                         return -EFAULT;
2196                 stop_dac1(s);
2197                 s->dma_dac1.ready = 0;
2198                 spin_lock_irqsave(&s->lock, flags);
2199                 if (val)
2200                         s->sctrl |= SCTRL_P1SMB;
2201                 else
2202                         s->sctrl &= ~SCTRL_P1SMB;
2203                 outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
2204                 spin_unlock_irqrestore(&s->lock, flags);
2205                 return 0;
2206
2207         case SNDCTL_DSP_CHANNELS:
2208                 if (get_user(val, p))
2209                         return -EFAULT;
2210                 if (val != 0) {
2211                         stop_dac1(s);
2212                         s->dma_dac1.ready = 0;
2213                         spin_lock_irqsave(&s->lock, flags);
2214                         if (val >= 2)
2215                                 s->sctrl |= SCTRL_P1SMB;
2216                         else
2217                                 s->sctrl &= ~SCTRL_P1SMB;
2218                         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
2219                         spin_unlock_irqrestore(&s->lock, flags);
2220                 }
2221                 return put_user((s->sctrl & SCTRL_P1SMB) ? 2 : 1, p);
2222                 
2223         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
2224                 return put_user(AFMT_S16_LE|AFMT_U8, p);
2225                 
2226         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
2227                 if (get_user(val, p))
2228                         return -EFAULT;
2229                 if (val != AFMT_QUERY) {
2230                         stop_dac1(s);
2231                         s->dma_dac1.ready = 0;
2232                         spin_lock_irqsave(&s->lock, flags);
2233                         if (val == AFMT_S16_LE)
2234                                 s->sctrl |= SCTRL_P1SEB;
2235                         else
2236                                 s->sctrl &= ~SCTRL_P1SEB;
2237                         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
2238                         spin_unlock_irqrestore(&s->lock, flags);
2239                 }
2240                 return put_user((s->sctrl & SCTRL_P1SEB) ? AFMT_S16_LE : AFMT_U8, p);
2241
2242         case SNDCTL_DSP_POST:
2243                 return 0;
2244
2245         case SNDCTL_DSP_GETTRIGGER:
2246                 return put_user((s->ctrl & CTRL_DAC1_EN) ? PCM_ENABLE_OUTPUT : 0, p);
2247                                                 
2248         case SNDCTL_DSP_SETTRIGGER:
2249                 if (get_user(val, p))
2250                         return -EFAULT;
2251                 if (val & PCM_ENABLE_OUTPUT) {
2252                         if (!s->dma_dac1.ready && (ret = prog_dmabuf_dac1(s)))
2253                                 return ret;
2254                         s->dma_dac1.enabled = 1;
2255                         start_dac1(s);
2256                 } else {
2257                         s->dma_dac1.enabled = 0;
2258                         stop_dac1(s);
2259                 }
2260                 return 0;
2261
2262         case SNDCTL_DSP_GETOSPACE:
2263                 if (!s->dma_dac1.ready && (val = prog_dmabuf_dac1(s)) != 0)
2264                         return val;
2265                 spin_lock_irqsave(&s->lock, flags);
2266                 es1371_update_ptr(s);
2267                 abinfo.fragsize = s->dma_dac1.fragsize;
2268                 count = s->dma_dac1.count;
2269                 if (count < 0)
2270                         count = 0;
2271                 abinfo.bytes = s->dma_dac1.dmasize - count;
2272                 abinfo.fragstotal = s->dma_dac1.numfrag;
2273                 abinfo.fragments = abinfo.bytes >> s->dma_dac1.fragshift;      
2274                 spin_unlock_irqrestore(&s->lock, flags);
2275                 return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
2276
2277         case SNDCTL_DSP_NONBLOCK:
2278                 file->f_flags |= O_NONBLOCK;
2279                 return 0;
2280
2281         case SNDCTL_DSP_GETODELAY:
2282                 if (!s->dma_dac1.ready && (val = prog_dmabuf_dac1(s)) != 0)
2283                         return val;
2284                 spin_lock_irqsave(&s->lock, flags);
2285                 es1371_update_ptr(s);
2286                 count = s->dma_dac1.count;
2287                 spin_unlock_irqrestore(&s->lock, flags);
2288                 if (count < 0)
2289                         count = 0;
2290                 return put_user(count, p);
2291
2292         case SNDCTL_DSP_GETOPTR:
2293                 if (!s->dma_dac1.ready && (val = prog_dmabuf_dac1(s)) != 0)
2294                         return val;
2295                 spin_lock_irqsave(&s->lock, flags);
2296                 es1371_update_ptr(s);
2297                 cinfo.bytes = s->dma_dac1.total_bytes;
2298                 count = s->dma_dac1.count;
2299                 if (count < 0)
2300                         count = 0;
2301                 cinfo.blocks = count >> s->dma_dac1.fragshift;
2302                 cinfo.ptr = s->dma_dac1.hwptr;
2303                 if (s->dma_dac1.mapped)
2304                         s->dma_dac1.count &= s->dma_dac1.fragsize-1;
2305                 spin_unlock_irqrestore(&s->lock, flags);
2306                 if (copy_to_user((void __user *)arg, &cinfo, sizeof(cinfo)))
2307                         return -EFAULT;
2308                 return 0;
2309
2310         case SNDCTL_DSP_GETBLKSIZE:
2311                 if ((val = prog_dmabuf_dac1(s)))
2312                         return val;
2313                 return put_user(s->dma_dac1.fragsize, p);
2314
2315         case SNDCTL_DSP_SETFRAGMENT:
2316                 if (get_user(val, p))
2317                         return -EFAULT;
2318                 s->dma_dac1.ossfragshift = val & 0xffff;
2319                 s->dma_dac1.ossmaxfrags = (val >> 16) & 0xffff;
2320                 if (s->dma_dac1.ossfragshift < 4)
2321                         s->dma_dac1.ossfragshift = 4;
2322                 if (s->dma_dac1.ossfragshift > 15)
2323                         s->dma_dac1.ossfragshift = 15;
2324                 if (s->dma_dac1.ossmaxfrags < 4)
2325                         s->dma_dac1.ossmaxfrags = 4;
2326                 return 0;
2327
2328         case SNDCTL_DSP_SUBDIVIDE:
2329                 if (s->dma_dac1.subdivision)
2330                         return -EINVAL;
2331                 if (get_user(val, p))
2332                         return -EFAULT;
2333                 if (val != 1 && val != 2 && val != 4)
2334                         return -EINVAL;
2335                 s->dma_dac1.subdivision = val;
2336                 return 0;
2337
2338         case SOUND_PCM_READ_RATE:
2339                 return put_user(s->dac1rate, p);
2340
2341         case SOUND_PCM_READ_CHANNELS:
2342                 return put_user((s->sctrl & SCTRL_P1SMB) ? 2 : 1, p);
2343
2344         case SOUND_PCM_READ_BITS:
2345                 return put_user((s->sctrl & SCTRL_P1SEB) ? 16 : 8, p);
2346
2347         case SOUND_PCM_WRITE_FILTER:
2348         case SNDCTL_DSP_SETSYNCRO:
2349         case SOUND_PCM_READ_FILTER:
2350                 return -EINVAL;
2351                 
2352         }
2353         return mixdev_ioctl(s->codec, cmd, arg);
2354 }
2355
2356 static int es1371_open_dac(struct inode *inode, struct file *file)
2357 {
2358         int minor = iminor(inode);
2359         DECLARE_WAITQUEUE(wait, current);
2360         unsigned long flags;
2361         struct list_head *list;
2362         struct es1371_state *s;
2363
2364         for (list = devs.next; ; list = list->next) {
2365                 if (list == &devs)
2366                         return -ENODEV;
2367                 s = list_entry(list, struct es1371_state, devs);
2368                 if (!((s->dev_dac ^ minor) & ~0xf))
2369                         break;
2370         }
2371         VALIDATE_STATE(s);
2372         /* we allow opening with O_RDWR, most programs do it although they will only write */
2373 #if 0
2374         if (file->f_mode & FMODE_READ)
2375                 return -EPERM;
2376 #endif
2377         if (!(file->f_mode & FMODE_WRITE))
2378                 return -EINVAL;
2379         file->private_data = s;
2380         /* wait for device to become free */
2381         mutex_lock(&s->open_mutex);
2382         while (s->open_mode & FMODE_DAC) {
2383                 if (file->f_flags & O_NONBLOCK) {
2384                         mutex_unlock(&s->open_mutex);
2385                         return -EBUSY;
2386                 }
2387                 add_wait_queue(&s->open_wait, &wait);
2388                 __set_current_state(TASK_INTERRUPTIBLE);
2389                 mutex_unlock(&s->open_mutex);
2390                 schedule();
2391                 remove_wait_queue(&s->open_wait, &wait);
2392                 set_current_state(TASK_RUNNING);
2393                 if (signal_pending(current))
2394                         return -ERESTARTSYS;
2395                 mutex_lock(&s->open_mutex);
2396         }
2397         s->dma_dac1.ossfragshift = s->dma_dac1.ossmaxfrags = s->dma_dac1.subdivision = 0;
2398         s->dma_dac1.enabled = 1;
2399         set_dac1_rate(s, 8000);
2400         spin_lock_irqsave(&s->lock, flags);
2401         s->sctrl &= ~SCTRL_P1FMT;
2402         if ((minor & 0xf) == SND_DEV_DSP16)
2403                 s->sctrl |= ES1371_FMT_S16_MONO << SCTRL_SH_P1FMT;
2404         else
2405                 s->sctrl |= ES1371_FMT_U8_MONO << SCTRL_SH_P1FMT;
2406         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
2407         spin_unlock_irqrestore(&s->lock, flags);
2408         s->open_mode |= FMODE_DAC;
2409         mutex_unlock(&s->open_mutex);
2410         return nonseekable_open(inode, file);
2411 }
2412
2413 static int es1371_release_dac(struct inode *inode, struct file *file)
2414 {
2415         struct es1371_state *s = (struct es1371_state *)file->private_data;
2416
2417         VALIDATE_STATE(s);
2418         lock_kernel();
2419         drain_dac1(s, file->f_flags & O_NONBLOCK);
2420         mutex_lock(&s->open_mutex);
2421         stop_dac1(s);
2422         dealloc_dmabuf(s, &s->dma_dac1);
2423         s->open_mode &= ~FMODE_DAC;
2424         mutex_unlock(&s->open_mutex);
2425         wake_up(&s->open_wait);
2426         unlock_kernel();
2427         return 0;
2428 }
2429
2430 static /*const*/ struct file_operations es1371_dac_fops = {
2431         .owner          = THIS_MODULE,
2432         .llseek         = no_llseek,
2433         .write          = es1371_write_dac,
2434         .poll           = es1371_poll_dac,
2435         .ioctl          = es1371_ioctl_dac,
2436         .mmap           = es1371_mmap_dac,
2437         .open           = es1371_open_dac,
2438         .release        = es1371_release_dac,
2439 };
2440
2441 /* --------------------------------------------------------------------- */
2442
2443 static ssize_t es1371_midi_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
2444 {
2445         struct es1371_state *s = (struct es1371_state *)file->private_data;
2446         DECLARE_WAITQUEUE(wait, current);
2447         ssize_t ret;
2448         unsigned long flags;
2449         unsigned ptr;
2450         int cnt;
2451
2452         VALIDATE_STATE(s);
2453         if (!access_ok(VERIFY_WRITE, buffer, count))
2454                 return -EFAULT;
2455         if (count == 0)
2456                 return 0;
2457         ret = 0;
2458         add_wait_queue(&s->midi.iwait, &wait);
2459         while (count > 0) {
2460                 spin_lock_irqsave(&s->lock, flags);
2461                 ptr = s->midi.ird;
2462                 cnt = MIDIINBUF - ptr;
2463                 if (s->midi.icnt < cnt)
2464                         cnt = s->midi.icnt;
2465                 if (cnt <= 0)
2466                         __set_current_state(TASK_INTERRUPTIBLE);
2467                 spin_unlock_irqrestore(&s->lock, flags);
2468                 if (cnt > count)
2469                         cnt = count;
2470                 if (cnt <= 0) {
2471                         if (file->f_flags & O_NONBLOCK) {
2472                                 if (!ret)
2473                                         ret = -EAGAIN;
2474                                 break;
2475                         }
2476                         schedule();
2477                         if (signal_pending(current)) {
2478                                 if (!ret)
2479                                         ret = -ERESTARTSYS;
2480                                 break;
2481                         }
2482                         continue;
2483                 }
2484                 if (copy_to_user(buffer, s->midi.ibuf + ptr, cnt)) {
2485                         if (!ret)
2486                                 ret = -EFAULT;
2487                         break;
2488                 }
2489                 ptr = (ptr + cnt) % MIDIINBUF;
2490                 spin_lock_irqsave(&s->lock, flags);
2491                 s->midi.ird = ptr;
2492                 s->midi.icnt -= cnt;
2493                 spin_unlock_irqrestore(&s->lock, flags);
2494                 count -= cnt;
2495                 buffer += cnt;
2496                 ret += cnt;
2497                 break;
2498         }
2499         __set_current_state(TASK_RUNNING);
2500         remove_wait_queue(&s->midi.iwait, &wait);
2501         return ret;
2502 }
2503
2504 static ssize_t es1371_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
2505 {
2506         struct es1371_state *s = (struct es1371_state *)file->private_data;
2507         DECLARE_WAITQUEUE(wait, current);
2508         ssize_t ret;
2509         unsigned long flags;
2510         unsigned ptr;
2511         int cnt;
2512
2513         VALIDATE_STATE(s);
2514         if (!access_ok(VERIFY_READ, buffer, count))
2515                 return -EFAULT;
2516         if (count == 0)
2517                 return 0;
2518         ret = 0;
2519         add_wait_queue(&s->midi.owait, &wait);
2520         while (count > 0) {
2521                 spin_lock_irqsave(&s->lock, flags);
2522                 ptr = s->midi.owr;
2523                 cnt = MIDIOUTBUF - ptr;
2524                 if (s->midi.ocnt + cnt > MIDIOUTBUF)
2525                         cnt = MIDIOUTBUF - s->midi.ocnt;
2526                 if (cnt <= 0) {
2527                         __set_current_state(TASK_INTERRUPTIBLE);
2528                         es1371_handle_midi(s);
2529                 }
2530                 spin_unlock_irqrestore(&s->lock, flags);
2531                 if (cnt > count)
2532                         cnt = count;
2533                 if (cnt <= 0) {
2534                         if (file->f_flags & O_NONBLOCK) {
2535                                 if (!ret)
2536                                         ret = -EAGAIN;
2537                                 break;
2538                         }
2539                         schedule();
2540                         if (signal_pending(current)) {
2541                                 if (!ret)
2542                                         ret = -ERESTARTSYS;
2543                                 break;
2544                         }
2545                         continue;
2546                 }
2547                 if (copy_from_user(s->midi.obuf + ptr, buffer, cnt)) {
2548                         if (!ret)
2549                                 ret = -EFAULT;
2550                         break;
2551                 }
2552                 ptr = (ptr + cnt) % MIDIOUTBUF;
2553                 spin_lock_irqsave(&s->lock, flags);
2554                 s->midi.owr = ptr;
2555                 s->midi.ocnt += cnt;
2556                 spin_unlock_irqrestore(&s->lock, flags);
2557                 count -= cnt;
2558                 buffer += cnt;
2559                 ret += cnt;
2560                 spin_lock_irqsave(&s->lock, flags);
2561                 es1371_handle_midi(s);
2562                 spin_unlock_irqrestore(&s->lock, flags);
2563         }
2564         __set_current_state(TASK_RUNNING);
2565         remove_wait_queue(&s->midi.owait, &wait);
2566         return ret;
2567 }
2568
2569 /* No kernel lock - we have our own spinlock */
2570 static unsigned int es1371_midi_poll(struct file *file, struct poll_table_struct *wait)
2571 {
2572         struct es1371_state *s = (struct es1371_state *)file->private_data;
2573         unsigned long flags;
2574         unsigned int mask = 0;
2575
2576         VALIDATE_STATE(s);
2577         if (file->f_mode & FMODE_WRITE)
2578                 poll_wait(file, &s->midi.owait, wait);
2579         if (file->f_mode & FMODE_READ)
2580                 poll_wait(file, &s->midi.iwait, wait);
2581         spin_lock_irqsave(&s->lock, flags);
2582         if (file->f_mode & FMODE_READ) {
2583                 if (s->midi.icnt > 0)
2584                         mask |= POLLIN | POLLRDNORM;
2585         }
2586         if (file->f_mode & FMODE_WRITE) {
2587                 if (s->midi.ocnt < MIDIOUTBUF)
2588                         mask |= POLLOUT | POLLWRNORM;
2589         }
2590         spin_unlock_irqrestore(&s->lock, flags);
2591         return mask;
2592 }
2593
2594 static int es1371_midi_open(struct inode *inode, struct file *file)
2595 {
2596         int minor = iminor(inode);
2597         DECLARE_WAITQUEUE(wait, current);
2598         unsigned long flags;
2599         struct list_head *list;
2600         struct es1371_state *s;
2601
2602         for (list = devs.next; ; list = list->next) {
2603                 if (list == &devs)
2604                         return -ENODEV;
2605                 s = list_entry(list, struct es1371_state, devs);
2606                 if (s->dev_midi == minor)
2607                         break;
2608         }
2609         VALIDATE_STATE(s);
2610         file->private_data = s;
2611         /* wait for device to become free */
2612         mutex_lock(&s->open_mutex);
2613         while (s->open_mode & (file->f_mode << FMODE_MIDI_SHIFT)) {
2614                 if (file->f_flags & O_NONBLOCK) {
2615                         mutex_unlock(&s->open_mutex);
2616                         return -EBUSY;
2617                 }
2618                 add_wait_queue(&s->open_wait, &wait);
2619                 __set_current_state(TASK_INTERRUPTIBLE);
2620                 mutex_unlock(&s->open_mutex);
2621                 schedule();
2622                 remove_wait_queue(&s->open_wait, &wait);
2623                 set_current_state(TASK_RUNNING);
2624                 if (signal_pending(current))
2625                         return -ERESTARTSYS;
2626                 mutex_lock(&s->open_mutex);
2627         }
2628         spin_lock_irqsave(&s->lock, flags);
2629         if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) {
2630                 s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
2631                 s->midi.ord = s->midi.owr = s->midi.ocnt = 0;
2632                 outb(UCTRL_CNTRL_SWR, s->io+ES1371_REG_UART_CONTROL);
2633                 outb(0, s->io+ES1371_REG_UART_CONTROL);
2634                 outb(0, s->io+ES1371_REG_UART_TEST);
2635         }
2636         if (file->f_mode & FMODE_READ) {
2637                 s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
2638         }
2639         if (file->f_mode & FMODE_WRITE) {
2640                 s->midi.ord = s->midi.owr = s->midi.ocnt = 0;
2641         }
2642         s->ctrl |= CTRL_UART_EN;
2643         outl(s->ctrl, s->io+ES1371_REG_CONTROL);
2644         es1371_handle_midi(s);
2645         spin_unlock_irqrestore(&s->lock, flags);
2646         s->open_mode |= (file->f_mode << FMODE_MIDI_SHIFT) & (FMODE_MIDI_READ | FMODE_MIDI_WRITE);
2647         mutex_unlock(&s->open_mutex);
2648         return nonseekable_open(inode, file);
2649 }
2650
2651 static int es1371_midi_release(struct inode *inode, struct file *file)
2652 {
2653         struct es1371_state *s = (struct es1371_state *)file->private_data;
2654         DECLARE_WAITQUEUE(wait, current);
2655         unsigned long flags;
2656         unsigned count, tmo;
2657
2658         VALIDATE_STATE(s);
2659         lock_kernel();
2660         if (file->f_mode & FMODE_WRITE) {
2661                 add_wait_queue(&s->midi.owait, &wait);
2662                 for (;;) {
2663                         __set_current_state(TASK_INTERRUPTIBLE);
2664                         spin_lock_irqsave(&s->lock, flags);
2665                         count = s->midi.ocnt;
2666                         spin_unlock_irqrestore(&s->lock, flags);
2667                         if (count <= 0)
2668                                 break;
2669                         if (signal_pending(current))
2670                                 break;
2671                         if (file->f_flags & O_NONBLOCK)
2672                                 break;
2673                         tmo = (count * HZ) / 3100;
2674                         if (!schedule_timeout(tmo ? : 1) && tmo)
2675                                 printk(KERN_DEBUG PFX "midi timed out??\n");
2676                 }
2677                 remove_wait_queue(&s->midi.owait, &wait);
2678                 set_current_state(TASK_RUNNING);
2679         }
2680         mutex_lock(&s->open_mutex);
2681         s->open_mode &= ~((file->f_mode << FMODE_MIDI_SHIFT) & (FMODE_MIDI_READ|FMODE_MIDI_WRITE));
2682         spin_lock_irqsave(&s->lock, flags);
2683         if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) {
2684                 s->ctrl &= ~CTRL_UART_EN;
2685                 outl(s->ctrl, s->io+ES1371_REG_CONTROL);
2686         }
2687         spin_unlock_irqrestore(&s->lock, flags);
2688         mutex_unlock(&s->open_mutex);
2689         wake_up(&s->open_wait);
2690         unlock_kernel();
2691         return 0;
2692 }
2693
2694 static /*const*/ struct file_operations es1371_midi_fops = {
2695         .owner          = THIS_MODULE,
2696         .llseek         = no_llseek,
2697         .read           = es1371_midi_read,
2698         .write          = es1371_midi_write,
2699         .poll           = es1371_midi_poll,
2700         .open           = es1371_midi_open,
2701         .release        = es1371_midi_release,
2702 };
2703
2704 /* --------------------------------------------------------------------- */
2705
2706 /*
2707  * for debugging purposes, we'll create a proc device that dumps the
2708  * CODEC chipstate
2709  */
2710
2711 #ifdef ES1371_DEBUG
2712 static int proc_es1371_dump (char *buf, char **start, off_t fpos, int length, int *eof, void *data)
2713 {
2714         struct es1371_state *s;
2715         int cnt, len = 0;
2716
2717         if (list_empty(&devs))
2718                 return 0;
2719         s = list_entry(devs.next, struct es1371_state, devs);
2720         /* print out header */
2721         len += sprintf(buf + len, "\t\tCreative ES137x Debug Dump-o-matic\n");
2722
2723         /* print out CODEC state */
2724         len += sprintf (buf + len, "AC97 CODEC state\n");
2725         for (cnt=0; cnt <= 0x7e; cnt = cnt +2)
2726                 len+= sprintf (buf + len, "reg:0x%02x  val:0x%04x\n", cnt, rdcodec(s->codec, cnt));
2727
2728         if (fpos >=len){
2729                 *start = buf;
2730                 *eof =1;
2731                 return 0;
2732         }
2733         *start = buf + fpos;
2734         if ((len -= fpos) > length)
2735                 return length;
2736         *eof =1;
2737         return len;
2738
2739 }
2740 #endif /* ES1371_DEBUG */
2741
2742 /* --------------------------------------------------------------------- */
2743
2744 /* maximum number of devices; only used for command line params */
2745 #define NR_DEVICE 5
2746
2747 static int spdif[NR_DEVICE];
2748 static int nomix[NR_DEVICE];
2749 static int amplifier[NR_DEVICE];
2750
2751 static unsigned int devindex;
2752
2753 module_param_array(spdif, bool, NULL, 0);
2754 MODULE_PARM_DESC(spdif, "if 1 the output is in S/PDIF digital mode");
2755 module_param_array(nomix, bool, NULL, 0);
2756 MODULE_PARM_DESC(nomix, "if 1 no analog audio is mixed to the digital output");
2757 module_param_array(amplifier, bool, NULL, 0);
2758 MODULE_PARM_DESC(amplifier, "Set to 1 if the machine needs the amp control enabling (many laptops)");
2759
2760 MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
2761 MODULE_DESCRIPTION("ES1371 AudioPCI97 Driver");
2762 MODULE_LICENSE("GPL");
2763
2764
2765 /* --------------------------------------------------------------------- */
2766
2767 static struct initvol {
2768         int mixch;
2769         int vol;
2770 } initvol[] __devinitdata = {
2771         { SOUND_MIXER_WRITE_LINE, 0x4040 },
2772         { SOUND_MIXER_WRITE_CD, 0x4040 },
2773         { MIXER_WRITE(SOUND_MIXER_VIDEO), 0x4040 },
2774         { SOUND_MIXER_WRITE_LINE1, 0x4040 },
2775         { SOUND_MIXER_WRITE_PCM, 0x4040 },
2776         { SOUND_MIXER_WRITE_VOLUME, 0x4040 },
2777         { MIXER_WRITE(SOUND_MIXER_PHONEOUT), 0x4040 },
2778         { SOUND_MIXER_WRITE_OGAIN, 0x4040 },
2779         { MIXER_WRITE(SOUND_MIXER_PHONEIN), 0x4040 },
2780         { SOUND_MIXER_WRITE_SPEAKER, 0x4040 },
2781         { SOUND_MIXER_WRITE_MIC, 0x4040 },
2782         { SOUND_MIXER_WRITE_RECLEV, 0x4040 },
2783         { SOUND_MIXER_WRITE_IGAIN, 0x4040 }
2784 };
2785
2786 static struct
2787 {
2788         short svid, sdid;
2789 } amplifier_needed[] = 
2790 {
2791         { 0x107B, 0x2150 },             /* Gateway Solo 2150 */
2792         { 0x13BD, 0x100C },             /* Mebius PC-MJ100V */
2793         { 0x1102, 0x5938 },             /* Targa Xtender 300 */
2794         { 0x1102, 0x8938 },             /* IPC notebook */
2795         { PCI_ANY_ID, PCI_ANY_ID }
2796 };
2797
2798 #ifdef SUPPORT_JOYSTICK
2799
2800 static int __devinit es1371_register_gameport(struct es1371_state *s)
2801 {
2802         struct gameport *gp;
2803         int gpio;
2804
2805         for (gpio = 0x218; gpio >= 0x200; gpio -= 0x08)
2806                 if (request_region(gpio, JOY_EXTENT, "es1371"))
2807                         break;
2808
2809         if (gpio < 0x200) {
2810                 printk(KERN_ERR PFX "no free joystick address found\n");
2811                 return -EBUSY;
2812         }
2813
2814         s->gameport = gp = gameport_allocate_port();
2815         if (!gp) {
2816                 printk(KERN_ERR PFX "can not allocate memory for gameport\n");
2817                 release_region(gpio, JOY_EXTENT);
2818                 return -ENOMEM;
2819         }
2820
2821         gameport_set_name(gp, "ESS1371 Gameport");
2822         gameport_set_phys(gp, "isa%04x/gameport0", gpio);
2823         gp->dev.parent = &s->dev->dev;
2824         gp->io = gpio;
2825
2826         s->ctrl |= CTRL_JYSTK_EN | (((gpio >> 3) & CTRL_JOY_MASK) << CTRL_JOY_SHIFT);
2827         outl(s->ctrl, s->io + ES1371_REG_CONTROL);
2828
2829         gameport_register_port(gp);
2830
2831         return 0;
2832 }
2833
2834 static inline void es1371_unregister_gameport(struct es1371_state *s)
2835 {
2836         if (s->gameport) {
2837                 int gpio = s->gameport->io;
2838                 gameport_unregister_port(s->gameport);
2839                 release_region(gpio, JOY_EXTENT);
2840
2841         }
2842 }
2843
2844 #else
2845 static inline int es1371_register_gameport(struct es1371_state *s) { return -ENOSYS; }
2846 static inline void es1371_unregister_gameport(struct es1371_state *s) { }
2847 #endif /* SUPPORT_JOYSTICK */
2848
2849
2850 static int __devinit es1371_probe(struct pci_dev *pcidev, const struct pci_device_id *pciid)
2851 {
2852         struct es1371_state *s;
2853         mm_segment_t fs;
2854         int i, val, res = -1;
2855         int idx;
2856         unsigned long tmo;
2857         signed long tmo2;
2858         unsigned int cssr;
2859
2860         if ((res=pci_enable_device(pcidev)))
2861                 return res;
2862
2863         if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_IO))
2864                 return -ENODEV;
2865         if (pcidev->irq == 0) 
2866                 return -ENODEV;
2867         i = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
2868         if (i) {
2869                 printk(KERN_WARNING "es1371: architecture does not support 32bit PCI busmaster DMA\n");
2870                 return i;
2871         }
2872         if (!(s = kmalloc(sizeof(struct es1371_state), GFP_KERNEL))) {
2873                 printk(KERN_WARNING PFX "out of memory\n");
2874                 return -ENOMEM;
2875         }
2876         memset(s, 0, sizeof(struct es1371_state));
2877         
2878         s->codec = ac97_alloc_codec();
2879         if(s->codec == NULL)
2880                 goto err_codec;
2881                 
2882         init_waitqueue_head(&s->dma_adc.wait);
2883         init_waitqueue_head(&s->dma_dac1.wait);
2884         init_waitqueue_head(&s->dma_dac2.wait);
2885         init_waitqueue_head(&s->open_wait);
2886         init_waitqueue_head(&s->midi.iwait);
2887         init_waitqueue_head(&s->midi.owait);
2888         mutex_init(&s->open_mutex);
2889         spin_lock_init(&s->lock);
2890         s->magic = ES1371_MAGIC;
2891         s->dev = pcidev;
2892         s->io = pci_resource_start(pcidev, 0);
2893         s->irq = pcidev->irq;
2894         s->vendor = pcidev->vendor;
2895         s->device = pcidev->device;
2896         pci_read_config_byte(pcidev, PCI_REVISION_ID, &s->rev);
2897         s->codec->private_data = s;
2898         s->codec->id = 0;
2899         s->codec->codec_read = rdcodec;
2900         s->codec->codec_write = wrcodec;
2901         printk(KERN_INFO PFX "found chip, vendor id 0x%04x device id 0x%04x revision 0x%02x\n",
2902                s->vendor, s->device, s->rev);
2903         if (!request_region(s->io, ES1371_EXTENT, "es1371")) {
2904                 printk(KERN_ERR PFX "io ports %#lx-%#lx in use\n", s->io, s->io+ES1371_EXTENT-1);
2905                 res = -EBUSY;
2906                 goto err_region;
2907         }
2908         if ((res=request_irq(s->irq, es1371_interrupt, IRQF_SHARED, "es1371",s))) {
2909                 printk(KERN_ERR PFX "irq %u in use\n", s->irq);
2910                 goto err_irq;
2911         }
2912         printk(KERN_INFO PFX "found es1371 rev %d at io %#lx irq %u\n",
2913                s->rev, s->io, s->irq);
2914         /* register devices */
2915         if ((res=(s->dev_audio = register_sound_dsp(&es1371_audio_fops,-1)))<0)
2916                 goto err_dev1;
2917         if ((res=(s->codec->dev_mixer = register_sound_mixer(&es1371_mixer_fops, -1))) < 0)
2918                 goto err_dev2;
2919         if ((res=(s->dev_dac = register_sound_dsp(&es1371_dac_fops, -1))) < 0)
2920                 goto err_dev3;
2921         if ((res=(s->dev_midi = register_sound_midi(&es1371_midi_fops, -1)))<0 )
2922                 goto err_dev4;
2923 #ifdef ES1371_DEBUG
2924         /* initialize the debug proc device */
2925         s->ps = create_proc_read_entry("es1371",0,NULL,proc_es1371_dump,NULL);
2926 #endif /* ES1371_DEBUG */
2927         
2928         /* initialize codec registers */
2929         s->ctrl = 0;
2930
2931         /* Check amplifier requirements */
2932         
2933         if (amplifier[devindex])
2934                 s->ctrl |= CTRL_GPIO_OUT0;
2935         else for(idx = 0; amplifier_needed[idx].svid != PCI_ANY_ID; idx++)
2936         {
2937                 if(pcidev->subsystem_vendor == amplifier_needed[idx].svid &&
2938                    pcidev->subsystem_device == amplifier_needed[idx].sdid)
2939                 {
2940                         s->ctrl |= CTRL_GPIO_OUT0;   /* turn internal amplifier on */
2941                         printk(KERN_INFO PFX "Enabling internal amplifier.\n");
2942                 }
2943         }
2944
2945         s->sctrl = 0;
2946         cssr = 0;
2947         s->spdif_volume = -1;
2948         /* check to see if s/pdif mode is being requested */
2949         if (spdif[devindex]) {
2950                 if (s->rev >= 4) {
2951                         printk(KERN_INFO PFX "enabling S/PDIF output\n");
2952                         s->spdif_volume = 0;
2953                         cssr |= STAT_EN_SPDIF;
2954                         s->ctrl |= CTRL_SPDIFEN_B;
2955                         if (nomix[devindex]) /* don't mix analog inputs to s/pdif output */
2956                                 s->ctrl |= CTRL_RECEN_B;
2957                 } else {
2958                         printk(KERN_ERR PFX "revision %d does not support S/PDIF\n", s->rev);
2959                 }
2960         }
2961         /* initialize the chips */
2962         outl(s->ctrl, s->io+ES1371_REG_CONTROL);
2963         outl(s->sctrl, s->io+ES1371_REG_SERIAL_CONTROL);
2964         outl(LEGACY_JFAST, s->io+ES1371_REG_LEGACY);
2965         pci_set_master(pcidev);  /* enable bus mastering */
2966         /* if we are a 5880 turn on the AC97 */
2967         if (s->vendor == PCI_VENDOR_ID_ENSONIQ &&
2968             ((s->device == PCI_DEVICE_ID_ENSONIQ_CT5880 && s->rev >= CT5880REV_CT5880_C) || 
2969              (s->device == PCI_DEVICE_ID_ENSONIQ_ES1371 && s->rev == ES1371REV_CT5880_A) || 
2970              (s->device == PCI_DEVICE_ID_ENSONIQ_ES1371 && s->rev == ES1371REV_ES1373_8))) { 
2971                 cssr |= CSTAT_5880_AC97_RST;
2972                 outl(cssr, s->io+ES1371_REG_STATUS);
2973                 /* need to delay around 20ms(bleech) to give
2974                    some CODECs enough time to wakeup */
2975                 tmo = jiffies + (HZ / 50) + 1;
2976                 for (;;) {
2977                         tmo2 = tmo - jiffies;
2978                         if (tmo2 <= 0)
2979                                 break;
2980                         schedule_timeout(tmo2);
2981                 }
2982         }
2983         /* AC97 warm reset to start the bitclk */
2984         outl(s->ctrl | CTRL_SYNCRES, s->io+ES1371_REG_CONTROL);
2985         udelay(2);
2986         outl(s->ctrl, s->io+ES1371_REG_CONTROL);
2987         /* init the sample rate converter */
2988         src_init(s);
2989         /* codec init */
2990         if (!ac97_probe_codec(s->codec)) {
2991                 res = -ENODEV;
2992                 goto err_gp;
2993         }
2994         /* set default values */
2995
2996         fs = get_fs();
2997         set_fs(KERNEL_DS);
2998         val = SOUND_MASK_LINE;
2999         mixdev_ioctl(s->codec, SOUND_MIXER_WRITE_RECSRC, (unsigned long)&val);
3000         for (i = 0; i < sizeof(initvol)/sizeof(initvol[0]); i++) {
3001                 val = initvol[i].vol;
3002                 mixdev_ioctl(s->codec, initvol[i].mixch, (unsigned long)&val);
3003         }
3004         /* mute master and PCM when in S/PDIF mode */
3005         if (s->spdif_volume != -1) {
3006                 val = 0x0000;
3007                 s->codec->mixer_ioctl(s->codec, SOUND_MIXER_WRITE_VOLUME, (unsigned long)&val);
3008                 s->codec->mixer_ioctl(s->codec, SOUND_MIXER_WRITE_PCM, (unsigned long)&val);
3009         }
3010         set_fs(fs);
3011         /* turn on S/PDIF output driver if requested */
3012         outl(cssr, s->io+ES1371_REG_STATUS);
3013
3014         es1371_register_gameport(s);
3015
3016         /* store it in the driver field */
3017         pci_set_drvdata(pcidev, s);
3018         /* put it into driver list */
3019         list_add_tail(&s->devs, &devs);
3020         /* increment devindex */
3021         if (devindex < NR_DEVICE-1)
3022                 devindex++;
3023         return 0;
3024
3025  err_gp:
3026 #ifdef ES1371_DEBUG
3027         if (s->ps)
3028                 remove_proc_entry("es1371", NULL);
3029 #endif
3030         unregister_sound_midi(s->dev_midi);
3031  err_dev4:
3032         unregister_sound_dsp(s->dev_dac);
3033  err_dev3:
3034         unregister_sound_mixer(s->codec->dev_mixer);
3035  err_dev2:
3036         unregister_sound_dsp(s->dev_audio);
3037  err_dev1:
3038         printk(KERN_ERR PFX "cannot register misc device\n");
3039         free_irq(s->irq, s);
3040  err_irq:
3041         release_region(s->io, ES1371_EXTENT);
3042  err_region:
3043  err_codec:
3044         ac97_release_codec(s->codec);
3045         kfree(s);
3046         return res;
3047 }
3048
3049 static void __devexit es1371_remove(struct pci_dev *dev)
3050 {
3051         struct es1371_state *s = pci_get_drvdata(dev);
3052
3053         if (!s)
3054                 return;
3055         list_del(&s->devs);
3056 #ifdef ES1371_DEBUG
3057         if (s->ps)
3058                 remove_proc_entry("es1371", NULL);
3059 #endif /* ES1371_DEBUG */
3060         outl(0, s->io+ES1371_REG_CONTROL); /* switch everything off */
3061         outl(0, s->io+ES1371_REG_SERIAL_CONTROL); /* clear serial interrupts */
3062         synchronize_irq(s->irq);
3063         free_irq(s->irq, s);
3064         es1371_unregister_gameport(s);
3065         release_region(s->io, ES1371_EXTENT);
3066         unregister_sound_dsp(s->dev_audio);
3067         unregister_sound_mixer(s->codec->dev_mixer);
3068         unregister_sound_dsp(s->dev_dac);
3069         unregister_sound_midi(s->dev_midi);
3070         ac97_release_codec(s->codec);
3071         kfree(s);
3072         pci_set_drvdata(dev, NULL);
3073 }
3074
3075 static struct pci_device_id id_table[] = {
3076         { PCI_VENDOR_ID_ENSONIQ, PCI_DEVICE_ID_ENSONIQ_ES1371, PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
3077         { PCI_VENDOR_ID_ENSONIQ, PCI_DEVICE_ID_ENSONIQ_CT5880, PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
3078         { PCI_VENDOR_ID_ECTIVA, PCI_DEVICE_ID_ECTIVA_EV1938, PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
3079         { 0, }
3080 };
3081
3082 MODULE_DEVICE_TABLE(pci, id_table);
3083
3084 static struct pci_driver es1371_driver = {
3085         .name           = "es1371",
3086         .id_table       = id_table,
3087         .probe          = es1371_probe,
3088         .remove         = __devexit_p(es1371_remove),
3089 };
3090
3091 static int __init init_es1371(void)
3092 {
3093         printk(KERN_INFO PFX "version v0.32 time " __TIME__ " " __DATE__ "\n");
3094         return pci_register_driver(&es1371_driver);
3095 }
3096
3097 static void __exit cleanup_es1371(void)
3098 {
3099         printk(KERN_INFO PFX "unloading\n");
3100         pci_unregister_driver(&es1371_driver);
3101 }
3102
3103 module_init(init_es1371);
3104 module_exit(cleanup_es1371);
3105
3106 /* --------------------------------------------------------------------- */
3107
3108 #ifndef MODULE
3109
3110 /* format is: es1371=[spdif,[nomix,[amplifier]]] */
3111
3112 static int __init es1371_setup(char *str)
3113 {
3114         static unsigned __initdata nr_dev = 0;
3115
3116         if (nr_dev >= NR_DEVICE)
3117                 return 0;
3118
3119         (void)
3120         ((get_option(&str, &spdif[nr_dev]) == 2)
3121          && (get_option(&str, &nomix[nr_dev]) == 2)
3122          && (get_option(&str, &amplifier[nr_dev])));
3123
3124         nr_dev++;
3125         return 1;
3126 }
3127
3128 __setup("es1371=", es1371_setup);
3129
3130 #endif /* MODULE */