xref: /freebsd/sys/dev/sound/pci/maestro3.c (revision 39beb93c)
1 /*-
2  * Copyright (c) 2001 Scott Long <scottl@freebsd.org>
3  * Copyright (c) 2001 Darrell Anderson <anderson@cs.duke.edu>
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 /*
29  * Maestro-3/Allegro FreeBSD pcm sound driver
30  *
31  * executive status summary:
32  * (+) /dev/dsp multiple concurrent play channels.
33  * (+) /dev/dsp config (speed, mono/stereo, 8/16 bit).
34  * (+) /dev/mixer sets left/right volumes.
35  * (+) /dev/dsp recording works.  Tested successfully with the cdrom channel
36  * (+) apm suspend/resume works, and works properly!.
37  * (-) hardware volme controls don't work =-(
38  * (-) setblocksize() does nothing.
39  *
40  * The real credit goes to:
41  *
42  * Zach Brown for his Linux driver core and helpful technical comments.
43  * <zab@zabbo.net>, http://www.zabbo.net/maestro3
44  *
45  * Cameron Grant created the pcm framework used here nearly verbatim.
46  * <cg@freebsd.org>, http://people.freebsd.org/~cg/template.c
47  *
48  * Taku YAMAMOTO for his Maestro-1/2 FreeBSD driver and sanity reference.
49  * <taku@cent.saitama-u.ac.jp>
50  *
51  * ESS docs explained a few magic registers and numbers.
52  * http://virgo.caltech.edu/~dmoore/maestro3.pdf.gz
53  */
54 
55 #include <dev/sound/pcm/sound.h>
56 #include <dev/sound/pcm/ac97.h>
57 
58 #include <dev/pci/pcireg.h>
59 #include <dev/pci/pcivar.h>
60 
61 #include <gnu/dev/sound/pci/maestro3_reg.h>
62 #include <gnu/dev/sound/pci/maestro3_dsp.h>
63 
64 SND_DECLARE_FILE("$FreeBSD$");
65 
66 /* -------------------------------------------------------------------- */
67 
68 enum {CHANGE=0, CALL=1, INTR=2, BORING=3, NONE=-1};
69 #ifndef M3_DEBUG_LEVEL
70 #define M3_DEBUG_LEVEL NONE
71 #endif
72 #define M3_DEBUG(level, _msg) {if ((level) <= M3_DEBUG_LEVEL) {printf _msg;}}
73 
74 /* -------------------------------------------------------------------- */
75 enum {
76 	ESS_ALLEGRO_1,
77 	ESS_MAESTRO3
78 };
79 
80 static struct m3_card_type {
81 	u_int32_t pci_id; int which; int delay1; int delay2; char *name;
82 } m3_card_types[] = {
83 	{ 0x1988125d, ESS_ALLEGRO_1, 50, 800, "ESS Technology Allegro-1" },
84 	{ 0x1998125d, ESS_MAESTRO3, 20, 500, "ESS Technology Maestro3" },
85 	{ 0x199a125d, ESS_MAESTRO3, 20, 500, "ESS Technology Maestro3" },
86 	{ 0, 0, 0, 0, NULL }
87 };
88 
89 #define M3_BUFSIZE_MIN	4096
90 #define M3_BUFSIZE_MAX	65536
91 #define M3_BUFSIZE_DEFAULT 4096
92 #define M3_PCHANS 4 /* create /dev/dsp0.[0-N] to use more than one */
93 #define M3_RCHANS 1
94 #define M3_MAXADDR ((1 << 27) - 1)
95 
96 struct sc_info;
97 
98 struct sc_pchinfo {
99 	u_int32_t	spd;
100 	u_int32_t	fmt;
101 	struct snd_dbuf	*buffer;
102 	struct pcm_channel	*channel;
103 	struct sc_info	*parent;
104 	u_int32_t	bufsize;
105 	u_int32_t	dac_data;
106 	u_int32_t	dac_idx;
107 	u_int32_t	active;
108 	u_int32_t	ptr;
109 	u_int32_t	prevptr;
110 };
111 
112 struct sc_rchinfo {
113 	u_int32_t	spd;
114 	u_int32_t	fmt;
115 	struct snd_dbuf	*buffer;
116 	struct pcm_channel	*channel;
117 	struct sc_info	*parent;
118 	u_int32_t	bufsize;
119 	u_int32_t	adc_data;
120 	u_int32_t	adc_idx;
121 	u_int32_t	active;
122 	u_int32_t	ptr;
123 	u_int32_t	prevptr;
124 };
125 
126 struct sc_info {
127 	device_t		dev;
128 	u_int32_t		type;
129 	int			which;
130 	int			delay1;
131 	int			delay2;
132 
133 	bus_space_tag_t		st;
134 	bus_space_handle_t	 sh;
135 	bus_dma_tag_t		parent_dmat;
136 
137 	struct resource		*reg;
138 	struct resource		*irq;
139 	int			regtype;
140 	int			regid;
141 	int			irqid;
142 	void			*ih;
143 
144 	struct sc_pchinfo	pch[M3_PCHANS];
145 	struct sc_rchinfo	rch[M3_RCHANS];
146 	int			pch_cnt;
147 	int			rch_cnt;
148 	int			pch_active_cnt;
149 	unsigned int		bufsz;
150 	u_int16_t		*savemem;
151 
152 	struct mtx		*sc_lock;
153 };
154 
155 #define M3_LOCK(_sc)		snd_mtxlock((_sc)->sc_lock)
156 #define M3_UNLOCK(_sc)		snd_mtxunlock((_sc)->sc_lock)
157 #define M3_LOCK_ASSERT(_sc)	snd_mtxassert((_sc)->sc_lock)
158 
159 /* -------------------------------------------------------------------- */
160 
161 /* play channel interface */
162 static void *m3_pchan_init(kobj_t, void *, struct snd_dbuf *, struct pcm_channel *, int);
163 static int m3_pchan_free(kobj_t, void *);
164 static int m3_pchan_setformat(kobj_t, void *, u_int32_t);
165 static int m3_pchan_setspeed(kobj_t, void *, u_int32_t);
166 static int m3_pchan_setblocksize(kobj_t, void *, u_int32_t);
167 static int m3_pchan_trigger(kobj_t, void *, int);
168 static int m3_pchan_trigger_locked(kobj_t, void *, int);
169 static u_int32_t m3_pchan_getptr_internal(struct sc_pchinfo *);
170 static u_int32_t m3_pchan_getptr(kobj_t, void *);
171 static struct pcmchan_caps *m3_pchan_getcaps(kobj_t, void *);
172 
173 /* record channel interface */
174 static void *m3_rchan_init(kobj_t, void *, struct snd_dbuf *, struct pcm_channel *, int);
175 static int m3_rchan_free(kobj_t, void *);
176 static int m3_rchan_setformat(kobj_t, void *, u_int32_t);
177 static int m3_rchan_setspeed(kobj_t, void *, u_int32_t);
178 static int m3_rchan_setblocksize(kobj_t, void *, u_int32_t);
179 static int m3_rchan_trigger(kobj_t, void *, int);
180 static int m3_rchan_trigger_locked(kobj_t, void *, int);
181 static u_int32_t m3_rchan_getptr_internal(struct sc_rchinfo *);
182 static u_int32_t m3_rchan_getptr(kobj_t, void *);
183 static struct pcmchan_caps *m3_rchan_getcaps(kobj_t, void *);
184 
185 static int m3_chan_active(struct sc_info *);
186 
187 /* talk to the codec - called from ac97.c */
188 static int	 m3_initcd(kobj_t, void *);
189 static int	 m3_rdcd(kobj_t, void *, int);
190 static int  	 m3_wrcd(kobj_t, void *, int, u_int32_t);
191 
192 /* stuff */
193 static void      m3_intr(void *);
194 static int       m3_power(struct sc_info *, int);
195 static int       m3_init(struct sc_info *);
196 static int       m3_uninit(struct sc_info *);
197 static u_int8_t	 m3_assp_halt(struct sc_info *);
198 static void	 m3_config(struct sc_info *);
199 static void	 m3_amp_enable(struct sc_info *);
200 static void	 m3_enable_ints(struct sc_info *);
201 static void	 m3_codec_reset(struct sc_info *);
202 
203 /* -------------------------------------------------------------------- */
204 /* Codec descriptor */
205 static kobj_method_t m3_codec_methods[] = {
206 	KOBJMETHOD(ac97_init,	m3_initcd),
207 	KOBJMETHOD(ac97_read,	m3_rdcd),
208 	KOBJMETHOD(ac97_write,	m3_wrcd),
209 	{ 0, 0 }
210 };
211 AC97_DECLARE(m3_codec);
212 
213 /* -------------------------------------------------------------------- */
214 /* channel descriptors */
215 
216 static u_int32_t m3_playfmt[] = {
217 	AFMT_U8,
218 	AFMT_STEREO | AFMT_U8,
219 	AFMT_S16_LE,
220 	AFMT_STEREO | AFMT_S16_LE,
221 	0
222 };
223 static struct pcmchan_caps m3_playcaps = {8000, 48000, m3_playfmt, 0};
224 
225 static kobj_method_t m3_pch_methods[] = {
226 	KOBJMETHOD(channel_init,		m3_pchan_init),
227 	KOBJMETHOD(channel_setformat,		m3_pchan_setformat),
228 	KOBJMETHOD(channel_setspeed,		m3_pchan_setspeed),
229 	KOBJMETHOD(channel_setblocksize,	m3_pchan_setblocksize),
230 	KOBJMETHOD(channel_trigger,		m3_pchan_trigger),
231 	KOBJMETHOD(channel_getptr,		m3_pchan_getptr),
232 	KOBJMETHOD(channel_getcaps,		m3_pchan_getcaps),
233 	KOBJMETHOD(channel_free,		m3_pchan_free),
234 	{ 0, 0 }
235 };
236 CHANNEL_DECLARE(m3_pch);
237 
238 static u_int32_t m3_recfmt[] = {
239 	AFMT_U8,
240 	AFMT_STEREO | AFMT_U8,
241 	AFMT_S16_LE,
242 	AFMT_STEREO | AFMT_S16_LE,
243 	0
244 };
245 static struct pcmchan_caps m3_reccaps = {8000, 48000, m3_recfmt, 0};
246 
247 static kobj_method_t m3_rch_methods[] = {
248 	KOBJMETHOD(channel_init,		m3_rchan_init),
249 	KOBJMETHOD(channel_setformat,		m3_rchan_setformat),
250 	KOBJMETHOD(channel_setspeed,		m3_rchan_setspeed),
251 	KOBJMETHOD(channel_setblocksize,	m3_rchan_setblocksize),
252 	KOBJMETHOD(channel_trigger,		m3_rchan_trigger),
253 	KOBJMETHOD(channel_getptr,		m3_rchan_getptr),
254 	KOBJMETHOD(channel_getcaps,		m3_rchan_getcaps),
255 	KOBJMETHOD(channel_free,		m3_rchan_free),
256 	{ 0, 0 }
257 };
258 CHANNEL_DECLARE(m3_rch);
259 
260 /* -------------------------------------------------------------------- */
261 /* some i/o convenience functions */
262 
263 #define m3_rd_1(sc, regno) bus_space_read_1(sc->st, sc->sh, regno)
264 #define m3_rd_2(sc, regno) bus_space_read_2(sc->st, sc->sh, regno)
265 #define m3_rd_4(sc, regno) bus_space_read_4(sc->st, sc->sh, regno)
266 #define m3_wr_1(sc, regno, data) bus_space_write_1(sc->st, sc->sh, regno, data)
267 #define m3_wr_2(sc, regno, data) bus_space_write_2(sc->st, sc->sh, regno, data)
268 #define m3_wr_4(sc, regno, data) bus_space_write_4(sc->st, sc->sh, regno, data)
269 #define m3_rd_assp_code(sc, index) \
270         m3_rd_assp(sc, MEMTYPE_INTERNAL_CODE, index)
271 #define m3_wr_assp_code(sc, index, data) \
272         m3_wr_assp(sc, MEMTYPE_INTERNAL_CODE, index, data)
273 #define m3_rd_assp_data(sc, index) \
274         m3_rd_assp(sc, MEMTYPE_INTERNAL_DATA, index)
275 #define m3_wr_assp_data(sc, index, data) \
276         m3_wr_assp(sc, MEMTYPE_INTERNAL_DATA, index, data)
277 
278 static __inline u_int16_t
279 m3_rd_assp(struct sc_info *sc, u_int16_t region, u_int16_t index)
280 {
281         m3_wr_2(sc, DSP_PORT_MEMORY_TYPE, region & MEMTYPE_MASK);
282         m3_wr_2(sc, DSP_PORT_MEMORY_INDEX, index);
283         return m3_rd_2(sc, DSP_PORT_MEMORY_DATA);
284 }
285 
286 static __inline void
287 m3_wr_assp(struct sc_info *sc, u_int16_t region, u_int16_t index,
288 	   u_int16_t data)
289 {
290         m3_wr_2(sc, DSP_PORT_MEMORY_TYPE, region & MEMTYPE_MASK);
291         m3_wr_2(sc, DSP_PORT_MEMORY_INDEX, index);
292         m3_wr_2(sc, DSP_PORT_MEMORY_DATA, data);
293 }
294 
295 static __inline int
296 m3_wait(struct sc_info *sc)
297 {
298 	int i;
299 
300 	for (i=0 ; i<20 ; i++) {
301 		if ((m3_rd_1(sc, CODEC_STATUS) & 1) == 0) {
302 			return 0;
303 		}
304 		DELAY(2);
305 	}
306 	return -1;
307 }
308 
309 /* -------------------------------------------------------------------- */
310 /* ac97 codec */
311 
312 static int
313 m3_initcd(kobj_t kobj, void *devinfo)
314 {
315 	struct sc_info *sc = (struct sc_info *)devinfo;
316 	u_int32_t data;
317 
318 	M3_DEBUG(CALL, ("m3_initcd\n"));
319 
320 	/* init ac-link */
321 
322 	data = m3_rd_1(sc, CODEC_COMMAND);
323 	return ((data & 0x1) ? 0 : 1);
324 }
325 
326 static int
327 m3_rdcd(kobj_t kobj, void *devinfo, int regno)
328 {
329 	struct sc_info *sc = (struct sc_info *)devinfo;
330 	u_int32_t data;
331 
332 	if (m3_wait(sc)) {
333 		device_printf(sc->dev, "m3_rdcd timed out.\n");
334 		return -1;
335 	}
336 	m3_wr_1(sc, CODEC_COMMAND, (regno & 0x7f) | 0x80);
337 	DELAY(50); /* ac97 cycle = 20.8 usec */
338 	if (m3_wait(sc)) {
339 		device_printf(sc->dev, "m3_rdcd timed out.\n");
340 		return -1;
341 	}
342 	data = m3_rd_2(sc, CODEC_DATA);
343 	return data;
344 }
345 
346 static int
347 m3_wrcd(kobj_t kobj, void *devinfo, int regno, u_int32_t data)
348 {
349 	struct sc_info *sc = (struct sc_info *)devinfo;
350 	if (m3_wait(sc)) {
351 		device_printf(sc->dev, "m3_wrcd timed out.\n");
352 		return -1;;
353 	}
354 	m3_wr_2(sc, CODEC_DATA, data);
355 	m3_wr_1(sc, CODEC_COMMAND, regno & 0x7f);
356 	DELAY(50); /* ac97 cycle = 20.8 usec */
357 	return 0;
358 }
359 
360 /* -------------------------------------------------------------------- */
361 /* play channel interface */
362 
363 #define LO(x) (((x) & 0x0000ffff)      )
364 #define HI(x) (((x) & 0xffff0000) >> 16)
365 
366 static void *
367 m3_pchan_init(kobj_t kobj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
368 {
369 	struct sc_info *sc = devinfo;
370 	struct sc_pchinfo *ch;
371 	u_int32_t bus_addr, i;
372 	int idx, data_bytes, dac_data;
373 	int dsp_in_size, dsp_out_size, dsp_in_buf, dsp_out_buf;
374 
375 	M3_LOCK(sc);
376 	idx = sc->pch_cnt; /* dac instance number, no active reuse! */
377         M3_DEBUG(CHANGE, ("m3_pchan_init(dac=%d)\n", idx));
378 
379 	if (dir != PCMDIR_PLAY) {
380 		M3_UNLOCK(sc);
381 		device_printf(sc->dev, "m3_pchan_init not PCMDIR_PLAY\n");
382 		return (NULL);
383 	}
384 
385 	data_bytes = (((MINISRC_TMP_BUFFER_SIZE & ~1) +
386 			   (MINISRC_IN_BUFFER_SIZE & ~1) +
387 			   (MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) &~ 255;
388 	dac_data = 0x1100 + (data_bytes * idx);
389 
390 	dsp_in_size = MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
391 	dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
392 	dsp_in_buf = dac_data + (MINISRC_TMP_BUFFER_SIZE/2);
393 	dsp_out_buf = dsp_in_buf + (dsp_in_size/2) + 1;
394 
395 	ch = &sc->pch[idx];
396 	ch->dac_idx = idx;
397 	ch->dac_data = dac_data;
398 	if (ch->dac_data + data_bytes/2 >= 0x1c00) {
399 		M3_UNLOCK(sc);
400 		device_printf(sc->dev, "m3_pchan_init: revb mem exhausted\n");
401 		return (NULL);
402 	}
403 
404 	ch->buffer = b;
405 	ch->parent = sc;
406 	ch->channel = c;
407 	ch->fmt = AFMT_U8;
408 	ch->spd = DSP_DEFAULT_SPEED;
409 	M3_UNLOCK(sc); /* XXX */
410 	if (sndbuf_alloc(ch->buffer, sc->parent_dmat, 0, sc->bufsz) != 0) {
411 		device_printf(sc->dev, "m3_pchan_init chn_allocbuf failed\n");
412 		return (NULL);
413 	}
414 	M3_LOCK(sc);
415 	ch->bufsize = sndbuf_getsize(ch->buffer);
416 
417 	/* host dma buffer pointers */
418 	bus_addr = sndbuf_getbufaddr(ch->buffer);
419 	if (bus_addr & 3) {
420 		device_printf(sc->dev, "m3_pchan_init unaligned bus_addr\n");
421 		bus_addr = (bus_addr + 4) & ~3;
422 	}
423 	m3_wr_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_ADDRL, LO(bus_addr));
424 	m3_wr_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_ADDRH, HI(bus_addr));
425 	m3_wr_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_END_PLUS_1L,
426 			LO(bus_addr + ch->bufsize));
427 	m3_wr_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_END_PLUS_1H,
428 			HI(bus_addr + ch->bufsize));
429 	m3_wr_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_CURRENTL,
430 			LO(bus_addr));
431 	m3_wr_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_CURRENTH,
432 			HI(bus_addr));
433 
434 	/* dsp buffers */
435 	m3_wr_assp_data(sc, ch->dac_data + CDATA_IN_BUF_BEGIN, dsp_in_buf);
436 	m3_wr_assp_data(sc, ch->dac_data + CDATA_IN_BUF_END_PLUS_1,
437 			dsp_in_buf + dsp_in_size/2);
438 	m3_wr_assp_data(sc, ch->dac_data + CDATA_IN_BUF_HEAD, dsp_in_buf);
439 	m3_wr_assp_data(sc, ch->dac_data + CDATA_IN_BUF_TAIL, dsp_in_buf);
440 	m3_wr_assp_data(sc, ch->dac_data + CDATA_OUT_BUF_BEGIN, dsp_out_buf);
441 	m3_wr_assp_data(sc, ch->dac_data + CDATA_OUT_BUF_END_PLUS_1,
442 			dsp_out_buf + dsp_out_size/2);
443 	m3_wr_assp_data(sc, ch->dac_data + CDATA_OUT_BUF_HEAD, dsp_out_buf);
444 	m3_wr_assp_data(sc, ch->dac_data + CDATA_OUT_BUF_TAIL, dsp_out_buf);
445 
446 	/* some per client initializers */
447 	m3_wr_assp_data(sc, ch->dac_data + SRC3_DIRECTION_OFFSET + 12,
448 			ch->dac_data + 40 + 8);
449 	m3_wr_assp_data(sc, ch->dac_data + SRC3_DIRECTION_OFFSET + 19,
450 			0x400 + MINISRC_COEF_LOC);
451 	/* enable or disable low pass filter? (0xff if rate> 45000) */
452 	m3_wr_assp_data(sc, ch->dac_data + SRC3_DIRECTION_OFFSET + 22, 0);
453 	/* tell it which way dma is going? */
454 	m3_wr_assp_data(sc, ch->dac_data + CDATA_DMA_CONTROL,
455 			DMACONTROL_AUTOREPEAT + DMAC_PAGE3_SELECTOR +
456 			DMAC_BLOCKF_SELECTOR);
457 
458 	/* set an armload of static initializers */
459 	for(i = 0 ; i < (sizeof(pv) / sizeof(pv[0])) ; i++) {
460 		m3_wr_assp_data(sc, ch->dac_data + pv[i].addr, pv[i].val);
461 	}
462 
463 	/* put us in the packed task lists */
464 	m3_wr_assp_data(sc, KDATA_INSTANCE0_MINISRC +
465 			(sc->pch_cnt + sc->rch_cnt),
466 			ch->dac_data >> DP_SHIFT_COUNT);
467 	m3_wr_assp_data(sc, KDATA_DMA_XFER0 + (sc->pch_cnt + sc->rch_cnt),
468 			ch->dac_data >> DP_SHIFT_COUNT);
469 	m3_wr_assp_data(sc, KDATA_MIXER_XFER0 + sc->pch_cnt,
470 			ch->dac_data >> DP_SHIFT_COUNT);
471 
472 	/* gotta start before stop */
473 	m3_pchan_trigger_locked(NULL, ch, PCMTRIG_START);
474 	/* silence noise on load */
475 	m3_pchan_trigger_locked(NULL, ch, PCMTRIG_STOP);
476 
477 	sc->pch_cnt++;
478 	M3_UNLOCK(sc);
479 
480 	return (ch);
481 }
482 
483 static int
484 m3_pchan_free(kobj_t kobj, void *chdata)
485 {
486 	struct sc_pchinfo *ch = chdata;
487 	struct sc_info *sc = ch->parent;
488 
489 	M3_LOCK(sc);
490         M3_DEBUG(CHANGE, ("m3_pchan_free(dac=%d)\n", ch->dac_idx));
491 
492 	/*
493 	 * should remove this exact instance from the packed lists, but all
494 	 * are released at once (and in a stopped state) so this is ok.
495 	 */
496 	m3_wr_assp_data(sc, KDATA_INSTANCE0_MINISRC +
497 			(sc->pch_cnt - 1) + sc->rch_cnt, 0);
498 	m3_wr_assp_data(sc, KDATA_DMA_XFER0 +
499 			(sc->pch_cnt - 1) + sc->rch_cnt, 0);
500 	m3_wr_assp_data(sc, KDATA_MIXER_XFER0 + (sc->pch_cnt-1), 0);
501 	sc->pch_cnt--;
502 	M3_UNLOCK(sc);
503 
504 	return (0);
505 }
506 
507 static int
508 m3_pchan_setformat(kobj_t kobj, void *chdata, u_int32_t format)
509 {
510 	struct sc_pchinfo *ch = chdata;
511 	struct sc_info *sc = ch->parent;
512 	u_int32_t data;
513 
514 	M3_LOCK(sc);
515 	M3_DEBUG(CHANGE,
516 		 ("m3_pchan_setformat(dac=%d, format=0x%x{%s-%s})\n",
517 		  ch->dac_idx, format,
518 		  format & (AFMT_U8|AFMT_S8) ? "8bit":"16bit",
519 		  format & AFMT_STEREO ? "STEREO":"MONO"));
520 
521 	/* mono word */
522         data = (format & AFMT_STEREO) ? 0 : 1;
523         m3_wr_assp_data(sc, ch->dac_data + SRC3_MODE_OFFSET, data);
524 
525         /* 8bit word */
526         data = ((format & AFMT_U8) || (format & AFMT_S8)) ? 1 : 0;
527         m3_wr_assp_data(sc, ch->dac_data + SRC3_WORD_LENGTH_OFFSET, data);
528 
529         ch->fmt = format;
530 	M3_UNLOCK(sc);
531 
532         return (0);
533 }
534 
535 static int
536 m3_pchan_setspeed(kobj_t kobj, void *chdata, u_int32_t speed)
537 {
538 	struct sc_pchinfo *ch = chdata;
539 	struct sc_info *sc = ch->parent;
540 	u_int32_t freq;
541 
542 	M3_LOCK(sc);
543 	M3_DEBUG(CHANGE, ("m3_pchan_setspeed(dac=%d, speed=%d)\n",
544 			  ch->dac_idx, speed));
545 
546         if ((freq = ((speed << 15) + 24000) / 48000) != 0) {
547                 freq--;
548         }
549 
550         m3_wr_assp_data(sc, ch->dac_data + CDATA_FREQUENCY, freq);
551 	ch->spd = speed;
552 	M3_UNLOCK(sc);
553 
554 	/* return closest possible speed */
555 	return (speed);
556 }
557 
558 static int
559 m3_pchan_setblocksize(kobj_t kobj, void *chdata, u_int32_t blocksize)
560 {
561 	struct sc_pchinfo *ch = chdata;
562 
563 	M3_DEBUG(CHANGE, ("m3_pchan_setblocksize(dac=%d, blocksize=%d)\n",
564 			  ch->dac_idx, blocksize));
565 
566 	return (sndbuf_getblksz(ch->buffer));
567 }
568 
569 static int
570 m3_pchan_trigger(kobj_t kobj, void *chdata, int go)
571 {
572 	struct sc_pchinfo *ch = chdata;
573 	struct sc_info *sc = ch->parent;
574 	int ret;
575 
576 	if (!PCMTRIG_COMMON(go))
577 		return (0);
578 
579 	M3_LOCK(sc);
580 	ret = m3_pchan_trigger_locked(kobj, chdata, go);
581 	M3_UNLOCK(sc);
582 
583 	return (ret);
584 }
585 
586 static int
587 m3_chan_active(struct sc_info *sc)
588 {
589 	int i, ret;
590 
591 	ret = 0;
592 
593 	for (i = 0; i < sc->pch_cnt; i++)
594 		ret += sc->pch[i].active;
595 
596 	for (i = 0; i < sc->rch_cnt; i++)
597 		ret += sc->rch[i].active;
598 
599 	return (ret);
600 }
601 
602 static int
603 m3_pchan_trigger_locked(kobj_t kobj, void *chdata, int go)
604 {
605 	struct sc_pchinfo *ch = chdata;
606 	struct sc_info *sc = ch->parent;
607 	u_int32_t data;
608 
609 	M3_LOCK_ASSERT(sc);
610 	M3_DEBUG(go == PCMTRIG_START ? CHANGE :
611 		 go == PCMTRIG_STOP ? CHANGE :
612 		 go == PCMTRIG_ABORT ? CHANGE :
613 		 CALL,
614 		 ("m3_pchan_trigger(dac=%d, go=0x%x{%s})\n", ch->dac_idx, go,
615 		  go == PCMTRIG_START ? "PCMTRIG_START" :
616 		  go == PCMTRIG_STOP ? "PCMTRIG_STOP" :
617 		  go == PCMTRIG_ABORT ? "PCMTRIG_ABORT" : "ignore"));
618 
619 	switch(go) {
620 	case PCMTRIG_START:
621 		if (ch->active) {
622 			return 0;
623 		}
624 		ch->active = 1;
625 		ch->ptr = 0;
626 		ch->prevptr = 0;
627 		sc->pch_active_cnt++;
628 
629 		/*[[inc_timer_users]]*/
630 		if (m3_chan_active(sc) == 1) {
631 	                m3_wr_assp_data(sc, KDATA_TIMER_COUNT_RELOAD, 240);
632         	        m3_wr_assp_data(sc, KDATA_TIMER_COUNT_CURRENT, 240);
633 	                data = m3_rd_2(sc, HOST_INT_CTRL);
634         	        m3_wr_2(sc, HOST_INT_CTRL, data | CLKRUN_GEN_ENABLE);
635 		}
636 
637                 m3_wr_assp_data(sc, ch->dac_data + CDATA_INSTANCE_READY, 1);
638                 m3_wr_assp_data(sc, KDATA_MIXER_TASK_NUMBER,
639 				sc->pch_active_cnt);
640 		break;
641 
642 	case PCMTRIG_STOP:
643 	case PCMTRIG_ABORT:
644 		if (ch->active == 0) {
645 			return 0;
646 		}
647 		ch->active = 0;
648 		sc->pch_active_cnt--;
649 
650 		/* XXX should the channel be drained? */
651 		/*[[dec_timer_users]]*/
652 		if (m3_chan_active(sc) == 0) {
653 	                m3_wr_assp_data(sc, KDATA_TIMER_COUNT_RELOAD, 0);
654         	        m3_wr_assp_data(sc, KDATA_TIMER_COUNT_CURRENT, 0);
655                 	data = m3_rd_2(sc, HOST_INT_CTRL);
656 	                m3_wr_2(sc, HOST_INT_CTRL, data & ~CLKRUN_GEN_ENABLE);
657 		}
658 
659                 m3_wr_assp_data(sc, ch->dac_data + CDATA_INSTANCE_READY, 0);
660                 m3_wr_assp_data(sc, KDATA_MIXER_TASK_NUMBER,
661 				sc->pch_active_cnt);
662 		break;
663 
664 	case PCMTRIG_EMLDMAWR:
665 		/* got play irq, transfer next buffer - ignore if using dma */
666 	case PCMTRIG_EMLDMARD:
667 		/* got rec irq, transfer next buffer - ignore if using dma */
668 	default:
669 		break;
670 	}
671 	return 0;
672 }
673 
674 static u_int32_t
675 m3_pchan_getptr_internal(struct sc_pchinfo *ch)
676 {
677 	struct sc_info *sc = ch->parent;
678 	u_int32_t hi, lo, bus_base, bus_crnt;
679 
680 	bus_base = sndbuf_getbufaddr(ch->buffer);
681 	hi = m3_rd_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_CURRENTH);
682         lo = m3_rd_assp_data(sc, ch->dac_data + CDATA_HOST_SRC_CURRENTL);
683         bus_crnt = lo | (hi << 16);
684 
685 	M3_DEBUG(CALL, ("m3_pchan_getptr(dac=%d) result=%d\n",
686 			ch->dac_idx, bus_crnt - bus_base));
687 
688 	return (bus_crnt - bus_base); /* current byte offset of channel */
689 }
690 
691 static u_int32_t
692 m3_pchan_getptr(kobj_t kobj, void *chdata)
693 {
694 	struct sc_pchinfo *ch = chdata;
695 	struct sc_info *sc = ch->parent;
696 	u_int32_t ptr;
697 
698 	M3_LOCK(sc);
699 	ptr = ch->ptr;
700 	M3_UNLOCK(sc);
701 
702 	return (ptr);
703 }
704 
705 static struct pcmchan_caps *
706 m3_pchan_getcaps(kobj_t kobj, void *chdata)
707 {
708 	struct sc_pchinfo *ch = chdata;
709 
710         M3_DEBUG(CALL, ("m3_pchan_getcaps(dac=%d)\n", ch->dac_idx));
711 
712 	return &m3_playcaps;
713 }
714 
715 /* -------------------------------------------------------------------- */
716 /* rec channel interface */
717 
718 static void *
719 m3_rchan_init(kobj_t kobj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
720 {
721 	struct sc_info *sc = devinfo;
722 	struct sc_rchinfo *ch;
723 	u_int32_t bus_addr, i;
724 
725 	int idx, data_bytes, adc_data;
726 	int dsp_in_size, dsp_out_size, dsp_in_buf, dsp_out_buf;
727 
728 	M3_LOCK(sc);
729 	idx = sc->rch_cnt; /* adc instance number, no active reuse! */
730         M3_DEBUG(CHANGE, ("m3_rchan_init(adc=%d)\n", idx));
731 
732 	if (dir != PCMDIR_REC) {
733 		M3_UNLOCK(sc);
734 		device_printf(sc->dev, "m3_pchan_init not PCMDIR_REC\n");
735 		return (NULL);
736 	}
737 
738 	data_bytes = (((MINISRC_TMP_BUFFER_SIZE & ~1) +
739 			   (MINISRC_IN_BUFFER_SIZE & ~1) +
740 			   (MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) &~ 255;
741 	adc_data = 0x1100 + (data_bytes * idx) + data_bytes/2;
742 	dsp_in_size = MINISRC_IN_BUFFER_SIZE + (0x10 * 2);
743 	dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
744 	dsp_in_buf = adc_data + (MINISRC_TMP_BUFFER_SIZE / 2);
745 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
746 
747 	ch = &sc->rch[idx];
748 	ch->adc_idx = idx;
749 	ch->adc_data = adc_data;
750 	if (ch->adc_data + data_bytes/2 >= 0x1c00) {
751 		M3_UNLOCK(sc);
752 		device_printf(sc->dev, "m3_rchan_init: revb mem exhausted\n");
753 		return (NULL);
754 	}
755 
756 	ch->buffer = b;
757 	ch->parent = sc;
758 	ch->channel = c;
759 	ch->fmt = AFMT_U8;
760 	ch->spd = DSP_DEFAULT_SPEED;
761 	M3_UNLOCK(sc); /* XXX */
762 	if (sndbuf_alloc(ch->buffer, sc->parent_dmat, 0, sc->bufsz) != 0) {
763 		device_printf(sc->dev, "m3_rchan_init chn_allocbuf failed\n");
764 		return (NULL);
765 	}
766 	M3_LOCK(sc);
767 	ch->bufsize = sndbuf_getsize(ch->buffer);
768 
769 	/* host dma buffer pointers */
770 	bus_addr = sndbuf_getbufaddr(ch->buffer);
771 	if (bus_addr & 3) {
772 		device_printf(sc->dev, "m3_rchan_init unaligned bus_addr\n");
773 		bus_addr = (bus_addr + 4) & ~3;
774 	}
775 	m3_wr_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_ADDRL, LO(bus_addr));
776 	m3_wr_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_ADDRH, HI(bus_addr));
777 	m3_wr_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_END_PLUS_1L,
778 			LO(bus_addr + ch->bufsize));
779 	m3_wr_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_END_PLUS_1H,
780 			HI(bus_addr + ch->bufsize));
781 	m3_wr_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_CURRENTL,
782 			LO(bus_addr));
783 	m3_wr_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_CURRENTH,
784 			HI(bus_addr));
785 
786 	/* dsp buffers */
787 	m3_wr_assp_data(sc, ch->adc_data + CDATA_IN_BUF_BEGIN, dsp_in_buf);
788 	m3_wr_assp_data(sc, ch->adc_data + CDATA_IN_BUF_END_PLUS_1,
789 			dsp_in_buf + dsp_in_size/2);
790 	m3_wr_assp_data(sc, ch->adc_data + CDATA_IN_BUF_HEAD, dsp_in_buf);
791 	m3_wr_assp_data(sc, ch->adc_data + CDATA_IN_BUF_TAIL, dsp_in_buf);
792 	m3_wr_assp_data(sc, ch->adc_data + CDATA_OUT_BUF_BEGIN, dsp_out_buf);
793 	m3_wr_assp_data(sc, ch->adc_data + CDATA_OUT_BUF_END_PLUS_1,
794 			dsp_out_buf + dsp_out_size/2);
795 	m3_wr_assp_data(sc, ch->adc_data + CDATA_OUT_BUF_HEAD, dsp_out_buf);
796 	m3_wr_assp_data(sc, ch->adc_data + CDATA_OUT_BUF_TAIL, dsp_out_buf);
797 
798 	/* some per client initializers */
799 	m3_wr_assp_data(sc, ch->adc_data + SRC3_DIRECTION_OFFSET + 12,
800 			ch->adc_data + 40 + 8);
801 	m3_wr_assp_data(sc, ch->adc_data + CDATA_DMA_CONTROL,
802 			DMACONTROL_DIRECTION + DMACONTROL_AUTOREPEAT +
803 			DMAC_PAGE3_SELECTOR + DMAC_BLOCKF_SELECTOR);
804 
805 	/* set an armload of static initializers */
806 	for(i = 0 ; i < (sizeof(rv) / sizeof(rv[0])) ; i++) {
807 		m3_wr_assp_data(sc, ch->adc_data + rv[i].addr, rv[i].val);
808 	}
809 
810 	/* put us in the packed task lists */
811 	m3_wr_assp_data(sc, KDATA_INSTANCE0_MINISRC +
812 			(sc->pch_cnt + sc->rch_cnt),
813 			ch->adc_data >> DP_SHIFT_COUNT);
814 	m3_wr_assp_data(sc, KDATA_DMA_XFER0 + (sc->pch_cnt + sc->rch_cnt),
815 			ch->adc_data >> DP_SHIFT_COUNT);
816 	m3_wr_assp_data(sc, KDATA_ADC1_XFER0 + sc->rch_cnt,
817 			ch->adc_data >> DP_SHIFT_COUNT);
818 
819 	/* gotta start before stop */
820 	m3_rchan_trigger_locked(NULL, ch, PCMTRIG_START);
821 	/* stop on init */
822 	m3_rchan_trigger_locked(NULL, ch, PCMTRIG_STOP);
823 
824 	sc->rch_cnt++;
825 	M3_UNLOCK(sc);
826 
827 	return (ch);
828 }
829 
830 static int
831 m3_rchan_free(kobj_t kobj, void *chdata)
832 {
833 	struct sc_rchinfo *ch = chdata;
834 	struct sc_info *sc = ch->parent;
835 
836 	M3_LOCK(sc);
837         M3_DEBUG(CHANGE, ("m3_rchan_free(adc=%d)\n", ch->adc_idx));
838 
839 	/*
840 	 * should remove this exact instance from the packed lists, but all
841 	 * are released at once (and in a stopped state) so this is ok.
842 	 */
843 	m3_wr_assp_data(sc, KDATA_INSTANCE0_MINISRC +
844 			(sc->rch_cnt - 1) + sc->pch_cnt, 0);
845 	m3_wr_assp_data(sc, KDATA_DMA_XFER0 +
846 			(sc->rch_cnt - 1) + sc->pch_cnt, 0);
847 	m3_wr_assp_data(sc, KDATA_ADC1_XFER0 + (sc->rch_cnt - 1), 0);
848 	sc->rch_cnt--;
849 	M3_UNLOCK(sc);
850 
851 	return (0);
852 }
853 
854 static int
855 m3_rchan_setformat(kobj_t kobj, void *chdata, u_int32_t format)
856 {
857 	struct sc_rchinfo *ch = chdata;
858 	struct sc_info *sc = ch->parent;
859 	u_int32_t data;
860 
861 	M3_LOCK(sc);
862 	M3_DEBUG(CHANGE,
863 		 ("m3_rchan_setformat(dac=%d, format=0x%x{%s-%s})\n",
864 		  ch->adc_idx, format,
865 		  format & (AFMT_U8|AFMT_S8) ? "8bit":"16bit",
866 		  format & AFMT_STEREO ? "STEREO":"MONO"));
867 
868 	/* mono word */
869         data = (format & AFMT_STEREO) ? 0 : 1;
870         m3_wr_assp_data(sc, ch->adc_data + SRC3_MODE_OFFSET, data);
871 
872         /* 8bit word */
873         data = ((format & AFMT_U8) || (format & AFMT_S8)) ? 1 : 0;
874         m3_wr_assp_data(sc, ch->adc_data + SRC3_WORD_LENGTH_OFFSET, data);
875         ch->fmt = format;
876 	M3_UNLOCK(sc);
877 
878         return (0);
879 }
880 
881 static int
882 m3_rchan_setspeed(kobj_t kobj, void *chdata, u_int32_t speed)
883 {
884 	struct sc_rchinfo *ch = chdata;
885 	struct sc_info *sc = ch->parent;
886 	u_int32_t freq;
887 
888 	M3_LOCK(sc);
889 	M3_DEBUG(CHANGE, ("m3_rchan_setspeed(adc=%d, speed=%d)\n",
890 			  ch->adc_idx, speed));
891 
892         if ((freq = ((speed << 15) + 24000) / 48000) != 0) {
893                 freq--;
894         }
895 
896         m3_wr_assp_data(sc, ch->adc_data + CDATA_FREQUENCY, freq);
897 	ch->spd = speed;
898 	M3_UNLOCK(sc);
899 
900 	/* return closest possible speed */
901 	return (speed);
902 }
903 
904 static int
905 m3_rchan_setblocksize(kobj_t kobj, void *chdata, u_int32_t blocksize)
906 {
907 	struct sc_rchinfo *ch = chdata;
908 
909 	M3_DEBUG(CHANGE, ("m3_rchan_setblocksize(adc=%d, blocksize=%d)\n",
910 			  ch->adc_idx, blocksize));
911 
912 	return (sndbuf_getblksz(ch->buffer));
913 }
914 
915 static int
916 m3_rchan_trigger(kobj_t kobj, void *chdata, int go)
917 {
918 	struct sc_rchinfo *ch = chdata;
919 	struct sc_info *sc = ch->parent;
920 	int ret;
921 
922 	if (!PCMTRIG_COMMON(go))
923 		return (0);
924 
925 	M3_LOCK(sc);
926 	ret = m3_rchan_trigger_locked(kobj, chdata, go);
927 	M3_UNLOCK(sc);
928 
929 	return (ret);
930 }
931 
932 static int
933 m3_rchan_trigger_locked(kobj_t kobj, void *chdata, int go)
934 {
935 	struct sc_rchinfo *ch = chdata;
936 	struct sc_info *sc = ch->parent;
937 	u_int32_t data;
938 
939 	M3_LOCK_ASSERT(sc);
940 	M3_DEBUG(go == PCMTRIG_START ? CHANGE :
941 		 go == PCMTRIG_STOP ? CHANGE :
942 		 go == PCMTRIG_ABORT ? CHANGE :
943 		 CALL,
944 		 ("m3_rchan_trigger(adc=%d, go=0x%x{%s})\n", ch->adc_idx, go,
945 		  go == PCMTRIG_START ? "PCMTRIG_START" :
946 		  go == PCMTRIG_STOP ? "PCMTRIG_STOP" :
947 		  go == PCMTRIG_ABORT ? "PCMTRIG_ABORT" : "ignore"));
948 
949 	switch(go) {
950 	case PCMTRIG_START:
951 		if (ch->active) {
952 			return 0;
953 		}
954 		ch->active = 1;
955 		ch->ptr = 0;
956 		ch->prevptr = 0;
957 
958 		/*[[inc_timer_users]]*/
959 		if (m3_chan_active(sc) == 1) {
960 	                m3_wr_assp_data(sc, KDATA_TIMER_COUNT_RELOAD, 240);
961         	        m3_wr_assp_data(sc, KDATA_TIMER_COUNT_CURRENT, 240);
962                 	data = m3_rd_2(sc, HOST_INT_CTRL);
963 	                m3_wr_2(sc, HOST_INT_CTRL, data | CLKRUN_GEN_ENABLE);
964 		}
965 
966                 m3_wr_assp_data(sc, KDATA_ADC1_REQUEST, 1);
967                 m3_wr_assp_data(sc, ch->adc_data + CDATA_INSTANCE_READY, 1);
968 		break;
969 
970 	case PCMTRIG_STOP:
971 	case PCMTRIG_ABORT:
972 		if (ch->active == 0) {
973 			return 0;
974 		}
975 		ch->active = 0;
976 
977 		/*[[dec_timer_users]]*/
978 		if (m3_chan_active(sc) == 0) {
979 	                m3_wr_assp_data(sc, KDATA_TIMER_COUNT_RELOAD, 0);
980         	        m3_wr_assp_data(sc, KDATA_TIMER_COUNT_CURRENT, 0);
981                 	data = m3_rd_2(sc, HOST_INT_CTRL);
982 	                m3_wr_2(sc, HOST_INT_CTRL, data & ~CLKRUN_GEN_ENABLE);
983 		}
984 
985                 m3_wr_assp_data(sc, ch->adc_data + CDATA_INSTANCE_READY, 0);
986                 m3_wr_assp_data(sc, KDATA_ADC1_REQUEST, 0);
987 		break;
988 
989 	case PCMTRIG_EMLDMAWR:
990 		/* got play irq, transfer next buffer - ignore if using dma */
991 	case PCMTRIG_EMLDMARD:
992 		/* got rec irq, transfer next buffer - ignore if using dma */
993 	default:
994 		break;
995 	}
996 	return 0;
997 }
998 
999 static u_int32_t
1000 m3_rchan_getptr_internal(struct sc_rchinfo *ch)
1001 {
1002 	struct sc_info *sc = ch->parent;
1003 	u_int32_t hi, lo, bus_base, bus_crnt;
1004 
1005 	bus_base = sndbuf_getbufaddr(ch->buffer);
1006 	hi = m3_rd_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_CURRENTH);
1007         lo = m3_rd_assp_data(sc, ch->adc_data + CDATA_HOST_SRC_CURRENTL);
1008         bus_crnt = lo | (hi << 16);
1009 
1010 	M3_DEBUG(CALL, ("m3_rchan_getptr(adc=%d) result=%d\n",
1011 			ch->adc_idx, bus_crnt - bus_base));
1012 
1013 	return (bus_crnt - bus_base); /* current byte offset of channel */
1014 }
1015 
1016 static u_int32_t
1017 m3_rchan_getptr(kobj_t kobj, void *chdata)
1018 {
1019 	struct sc_rchinfo *ch = chdata;
1020 	struct sc_info *sc = ch->parent;
1021 	u_int32_t ptr;
1022 
1023 	M3_LOCK(sc);
1024 	ptr = ch->ptr;
1025 	M3_UNLOCK(sc);
1026 
1027 	return (ptr);
1028 }
1029 
1030 static struct pcmchan_caps *
1031 m3_rchan_getcaps(kobj_t kobj, void *chdata)
1032 {
1033 	struct sc_rchinfo *ch = chdata;
1034 
1035         M3_DEBUG(CALL, ("m3_rchan_getcaps(adc=%d)\n", ch->adc_idx));
1036 
1037 	return &m3_reccaps;
1038 }
1039 
1040 /* -------------------------------------------------------------------- */
1041 /* The interrupt handler */
1042 
1043 static void
1044 m3_intr(void *p)
1045 {
1046 	struct sc_info *sc = (struct sc_info *)p;
1047 	struct sc_pchinfo *pch;
1048 	struct sc_rchinfo *rch;
1049 	u_int32_t status, ctl, i, delta;
1050 
1051 	M3_DEBUG(INTR, ("m3_intr\n"));
1052 
1053 	M3_LOCK(sc);
1054 	status = m3_rd_1(sc, HOST_INT_STATUS);
1055 	if (!status) {
1056 		M3_UNLOCK(sc);
1057 		return;
1058 	}
1059 
1060 	m3_wr_1(sc, HOST_INT_STATUS, 0xff); /* ack the int? */
1061 
1062 	if (status & HV_INT_PENDING) {
1063 		u_int8_t event;
1064 
1065 		event = m3_rd_1(sc, HW_VOL_COUNTER_MASTER);
1066 		switch (event) {
1067 		case 0x99:
1068 			mixer_hwvol_mute(sc->dev);
1069 			break;
1070 		case 0xaa:
1071 			mixer_hwvol_step(sc->dev, 1, 1);
1072 			break;
1073 		case 0x66:
1074 			mixer_hwvol_step(sc->dev, -1, -1);
1075 			break;
1076 		case 0x88:
1077 			break;
1078 		default:
1079 			device_printf(sc->dev, "Unknown HWVOL event\n");
1080 		}
1081 		m3_wr_1(sc, HW_VOL_COUNTER_MASTER, 0x88);
1082 
1083 	}
1084 
1085 	if (status & ASSP_INT_PENDING) {
1086 		ctl = m3_rd_1(sc, ASSP_CONTROL_B);
1087 		if (!(ctl & STOP_ASSP_CLOCK)) {
1088 			ctl = m3_rd_1(sc, ASSP_HOST_INT_STATUS);
1089 			if (ctl & DSP2HOST_REQ_TIMER) {
1090 				m3_wr_1(sc, ASSP_HOST_INT_STATUS,
1091 					DSP2HOST_REQ_TIMER);
1092 				/*[[ess_update_ptr]]*/
1093 				goto m3_handle_channel_intr;
1094 			}
1095 		}
1096 	}
1097 
1098 	goto m3_handle_channel_intr_out;
1099 
1100 m3_handle_channel_intr:
1101 	for (i=0 ; i<sc->pch_cnt ; i++) {
1102 		pch = &sc->pch[i];
1103 		if (pch->active) {
1104 			pch->ptr = m3_pchan_getptr_internal(pch);
1105 			delta = pch->bufsize + pch->ptr - pch->prevptr;
1106 			delta %= pch->bufsize;
1107 			if (delta < sndbuf_getblksz(pch->buffer))
1108 				continue;
1109 			pch->prevptr = pch->ptr;
1110 			M3_UNLOCK(sc);
1111 			chn_intr(pch->channel);
1112 			M3_LOCK(sc);
1113 		}
1114 	}
1115 	for (i=0 ; i<sc->rch_cnt ; i++) {
1116 		rch = &sc->rch[i];
1117 		if (rch->active) {
1118 			rch->ptr = m3_rchan_getptr_internal(rch);
1119 			delta = rch->bufsize + rch->ptr - rch->prevptr;
1120 			delta %= rch->bufsize;
1121 			if (delta < sndbuf_getblksz(rch->buffer))
1122 				continue;
1123 			rch->prevptr = rch->ptr;
1124 			M3_UNLOCK(sc);
1125 			chn_intr(rch->channel);
1126 			M3_LOCK(sc);
1127 		}
1128 	}
1129 
1130 m3_handle_channel_intr_out:
1131 	M3_UNLOCK(sc);
1132 }
1133 
1134 /* -------------------------------------------------------------------- */
1135 /* stuff */
1136 
1137 static int
1138 m3_power(struct sc_info *sc, int state)
1139 {
1140 	u_int32_t data;
1141 
1142 	M3_DEBUG(CHANGE, ("m3_power(%d)\n", state));
1143 	M3_LOCK_ASSERT(sc);
1144 
1145 	data = pci_read_config(sc->dev, 0x34, 1);
1146 	if (pci_read_config(sc->dev, data, 1) == 1) {
1147 		pci_write_config(sc->dev, data + 4, state, 1);
1148 	}
1149 
1150 	return 0;
1151 }
1152 
1153 static int
1154 m3_init(struct sc_info *sc)
1155 {
1156 	u_int32_t data, i, size;
1157 	u_int8_t reset_state;
1158 
1159 	M3_LOCK_ASSERT(sc);
1160         M3_DEBUG(CHANGE, ("m3_init\n"));
1161 
1162 	/* diable legacy emulations. */
1163 	data = pci_read_config(sc->dev, PCI_LEGACY_AUDIO_CTRL, 2);
1164 	data |= DISABLE_LEGACY;
1165 	pci_write_config(sc->dev, PCI_LEGACY_AUDIO_CTRL, data, 2);
1166 
1167 	m3_config(sc);
1168 
1169 	reset_state = m3_assp_halt(sc);
1170 
1171 	m3_codec_reset(sc);
1172 
1173 	/* [m3_assp_init] */
1174 	/* zero kernel data */
1175 	size = REV_B_DATA_MEMORY_UNIT_LENGTH * NUM_UNITS_KERNEL_DATA;
1176 	for(i = 0 ; i < size / 2 ; i++) {
1177 		m3_wr_assp_data(sc, KDATA_BASE_ADDR + i, 0);
1178 	}
1179 	/* zero mixer data? */
1180 	size = REV_B_DATA_MEMORY_UNIT_LENGTH * NUM_UNITS_KERNEL_DATA;
1181 	for(i = 0 ; i < size / 2 ; i++) {
1182 		m3_wr_assp_data(sc, KDATA_BASE_ADDR2 + i, 0);
1183 	}
1184 	/* init dma pointer */
1185 	m3_wr_assp_data(sc, KDATA_CURRENT_DMA,
1186 			KDATA_DMA_XFER0);
1187 	/* write kernel into code memory */
1188 	size = sizeof(assp_kernel_image);
1189 	for(i = 0 ; i < size / 2; i++) {
1190 		m3_wr_assp_code(sc, REV_B_CODE_MEMORY_BEGIN + i,
1191 				assp_kernel_image[i]);
1192 	}
1193 	/*
1194 	 * We only have this one client and we know that 0x400 is free in
1195 	 * our kernel's mem map, so lets just drop it there.  It seems that
1196 	 * the minisrc doesn't need vectors, so we won't bother with them..
1197 	 */
1198 	size = sizeof(assp_minisrc_image);
1199 	for(i = 0 ; i < size / 2; i++) {
1200 		m3_wr_assp_code(sc, 0x400 + i, assp_minisrc_image[i]);
1201 	}
1202 	/* write the coefficients for the low pass filter? */
1203 	size = sizeof(minisrc_lpf_image);
1204 	for(i = 0; i < size / 2 ; i++) {
1205 		m3_wr_assp_code(sc,0x400 + MINISRC_COEF_LOC + i,
1206 				minisrc_lpf_image[i]);
1207 	}
1208 	m3_wr_assp_code(sc, 0x400 + MINISRC_COEF_LOC + size, 0x8000);
1209 	/* the minisrc is the only thing on our task list */
1210 	m3_wr_assp_data(sc, KDATA_TASK0, 0x400);
1211 	/* init the mixer number */
1212 	m3_wr_assp_data(sc, KDATA_MIXER_TASK_NUMBER, 0);
1213 	/* extreme kernel master volume */
1214 	m3_wr_assp_data(sc, KDATA_DAC_LEFT_VOLUME, ARB_VOLUME);
1215 	m3_wr_assp_data(sc, KDATA_DAC_RIGHT_VOLUME, ARB_VOLUME);
1216 
1217 	m3_amp_enable(sc);
1218 
1219 	/* [m3_assp_client_init] (only one client at index 0) */
1220 	for (i=0x1100 ; i<0x1c00 ; i++) {
1221 		m3_wr_assp_data(sc, i, 0); /* zero entire dac/adc area */
1222 	}
1223 
1224 	/* [m3_assp_continue] */
1225 	m3_wr_1(sc, DSP_PORT_CONTROL_REG_B, reset_state | REGB_ENABLE_RESET);
1226 
1227 	return 0;
1228 }
1229 
1230 static int
1231 m3_uninit(struct sc_info *sc)
1232 {
1233         M3_DEBUG(CHANGE, ("m3_uninit\n"));
1234 	return 0;
1235 }
1236 
1237 /* -------------------------------------------------------------------- */
1238 /* Probe and attach the card */
1239 
1240 static int
1241 m3_pci_probe(device_t dev)
1242 {
1243 	struct m3_card_type *card;
1244 
1245 	M3_DEBUG(CALL, ("m3_pci_probe(0x%x)\n", pci_get_devid(dev)));
1246 
1247 	for (card = m3_card_types ; card->pci_id ; card++) {
1248 		if (pci_get_devid(dev) == card->pci_id) {
1249 			device_set_desc(dev, card->name);
1250 			return BUS_PROBE_DEFAULT;
1251 		}
1252 	}
1253 	return ENXIO;
1254 }
1255 
1256 static int
1257 m3_pci_attach(device_t dev)
1258 {
1259 	struct sc_info *sc;
1260 	struct ac97_info *codec = NULL;
1261 	u_int32_t data;
1262 	char status[SND_STATUSLEN];
1263 	struct m3_card_type *card;
1264 	int i, len, dacn, adcn;
1265 
1266 	M3_DEBUG(CALL, ("m3_pci_attach\n"));
1267 
1268 	sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
1269 	sc->dev = dev;
1270 	sc->type = pci_get_devid(dev);
1271 	sc->sc_lock = snd_mtxcreate(device_get_nameunit(dev),
1272 	    "snd_maestro3 softc");
1273 	for (card = m3_card_types ; card->pci_id ; card++) {
1274 		if (sc->type == card->pci_id) {
1275 			sc->which = card->which;
1276 			sc->delay1 = card->delay1;
1277 			sc->delay2 = card->delay2;
1278 			break;
1279 		}
1280 	}
1281 
1282 	if (resource_int_value(device_get_name(dev), device_get_unit(dev),
1283 	    "dac", &i) == 0) {
1284 	    	if (i < 1)
1285 			dacn = 1;
1286 		else if (i > M3_PCHANS)
1287 			dacn = M3_PCHANS;
1288 		else
1289 			dacn = i;
1290 	} else
1291 		dacn = M3_PCHANS;
1292 
1293 	adcn = M3_RCHANS;
1294 
1295 	data = pci_read_config(dev, PCIR_COMMAND, 2);
1296 	data |= (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN);
1297 	pci_write_config(dev, PCIR_COMMAND, data, 2);
1298 
1299 	sc->regid = PCIR_BAR(0);
1300 	sc->regtype = SYS_RES_MEMORY;
1301 	sc->reg = bus_alloc_resource_any(dev, sc->regtype, &sc->regid,
1302 					 RF_ACTIVE);
1303 	if (!sc->reg) {
1304 		sc->regtype = SYS_RES_IOPORT;
1305 		sc->reg = bus_alloc_resource_any(dev, sc->regtype, &sc->regid,
1306 						 RF_ACTIVE);
1307 	}
1308 	if (!sc->reg) {
1309 		device_printf(dev, "unable to allocate register space\n");
1310 		goto bad;
1311 	}
1312 	sc->st = rman_get_bustag(sc->reg);
1313 	sc->sh = rman_get_bushandle(sc->reg);
1314 
1315 	sc->irqid = 0;
1316 	sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqid,
1317 					 RF_ACTIVE | RF_SHAREABLE);
1318 	if (!sc->irq) {
1319 		device_printf(dev, "unable to allocate interrupt\n");
1320 		goto bad;
1321 	}
1322 
1323 	if (snd_setup_intr(dev, sc->irq, INTR_MPSAFE, m3_intr, sc, &sc->ih)) {
1324 		device_printf(dev, "unable to setup interrupt\n");
1325 		goto bad;
1326 	}
1327 
1328 	sc->bufsz = pcm_getbuffersize(dev, M3_BUFSIZE_MIN, M3_BUFSIZE_DEFAULT,
1329 	    M3_BUFSIZE_MAX);
1330 
1331 	if (bus_dma_tag_create(
1332 	    bus_get_dma_tag(dev),	/* parent */
1333 	    2, 0,		/* alignment, boundary */
1334 	    M3_MAXADDR,		/* lowaddr */
1335 	    BUS_SPACE_MAXADDR,	/* highaddr */
1336 	    NULL, NULL,		/* filtfunc, filtfuncarg */
1337 	    sc->bufsz,		/* maxsize */
1338 	    1,			/* nsegments */
1339 	    0x3ffff,		/* maxsegz */
1340 	    0,			/* flags */
1341 	    NULL,		/* lockfunc */
1342 	    NULL,		/* lockfuncarg */
1343 	    &sc->parent_dmat) != 0) {
1344 		device_printf(dev, "unable to create dma tag\n");
1345 		goto bad;
1346 	}
1347 
1348 	M3_LOCK(sc);
1349 	m3_power(sc, 0); /* power up */
1350 	/* init chip */
1351 	i = m3_init(sc);
1352 	M3_UNLOCK(sc);
1353 	if (i == -1) {
1354 		device_printf(dev, "unable to initialize the card\n");
1355 		goto bad;
1356 	}
1357 
1358 	/* create/init mixer */
1359 	codec = AC97_CREATE(dev, sc, m3_codec);
1360 	if (codec == NULL) {
1361 		device_printf(dev, "ac97_create error\n");
1362 		goto bad;
1363 	}
1364 	if (mixer_init(dev, ac97_getmixerclass(), codec)) {
1365 		device_printf(dev, "mixer_init error\n");
1366 		goto bad;
1367 	}
1368 
1369 	m3_enable_ints(sc);
1370 
1371 	if (pcm_register(dev, sc, dacn, adcn)) {
1372 		device_printf(dev, "pcm_register error\n");
1373 		goto bad;
1374 	}
1375 	for (i=0 ; i<dacn ; i++) {
1376 		if (pcm_addchan(dev, PCMDIR_PLAY, &m3_pch_class, sc)) {
1377 			device_printf(dev, "pcm_addchan (play) error\n");
1378 			goto bad;
1379 		}
1380 	}
1381 	for (i=0 ; i<adcn ; i++) {
1382 		if (pcm_addchan(dev, PCMDIR_REC, &m3_rch_class, sc)) {
1383 			device_printf(dev, "pcm_addchan (rec) error\n");
1384 			goto bad;
1385 		}
1386 	}
1387  	snprintf(status, SND_STATUSLEN, "at %s 0x%lx irq %ld %s",
1388 	    (sc->regtype == SYS_RES_IOPORT)? "io" : "memory",
1389 	    rman_get_start(sc->reg), rman_get_start(sc->irq),
1390 	    PCM_KLDSTRING(snd_maestro3));
1391 	if (pcm_setstatus(dev, status)) {
1392 		device_printf(dev, "attach: pcm_setstatus error\n");
1393 		goto bad;
1394 	}
1395 
1396 	mixer_hwvol_init(dev);
1397 
1398 	/* Create the buffer for saving the card state during suspend */
1399 	len = sizeof(u_int16_t) * (REV_B_CODE_MEMORY_LENGTH +
1400 	    REV_B_DATA_MEMORY_LENGTH);
1401 	sc->savemem = (u_int16_t*)malloc(len, M_DEVBUF, M_WAITOK | M_ZERO);
1402 
1403 	return 0;
1404 
1405  bad:
1406 	if (codec)
1407 		ac97_destroy(codec);
1408 	if (sc->ih)
1409 		bus_teardown_intr(dev, sc->irq, sc->ih);
1410 	if (sc->irq)
1411 		bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
1412 	if (sc->reg)
1413 		bus_release_resource(dev, sc->regtype, sc->regid, sc->reg);
1414 	if (sc->parent_dmat)
1415 		bus_dma_tag_destroy(sc->parent_dmat);
1416 	if (sc->sc_lock)
1417 		snd_mtxfree(sc->sc_lock);
1418 	free(sc, M_DEVBUF);
1419 	return ENXIO;
1420 }
1421 
1422 static int
1423 m3_pci_detach(device_t dev)
1424 {
1425 	struct sc_info *sc = pcm_getdevinfo(dev);
1426 	int r;
1427 
1428 	M3_DEBUG(CALL, ("m3_pci_detach\n"));
1429 
1430 	if ((r = pcm_unregister(dev)) != 0) {
1431 		return r;
1432 	}
1433 
1434 	M3_LOCK(sc);
1435 	m3_uninit(sc); /* shutdown chip */
1436 	m3_power(sc, 3); /* power off */
1437 	M3_UNLOCK(sc);
1438 
1439 	bus_teardown_intr(dev, sc->irq, sc->ih);
1440 	bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
1441 	bus_release_resource(dev, sc->regtype, sc->regid, sc->reg);
1442 	bus_dma_tag_destroy(sc->parent_dmat);
1443 
1444 	free(sc->savemem, M_DEVBUF);
1445 	snd_mtxfree(sc->sc_lock);
1446 	free(sc, M_DEVBUF);
1447 	return 0;
1448 }
1449 
1450 static int
1451 m3_pci_suspend(device_t dev)
1452 {
1453 	struct sc_info *sc = pcm_getdevinfo(dev);
1454 	int i, index = 0;
1455 
1456         M3_DEBUG(CHANGE, ("m3_pci_suspend\n"));
1457 
1458 	M3_LOCK(sc);
1459 	for (i=0 ; i<sc->pch_cnt ; i++) {
1460 		if (sc->pch[i].active) {
1461 			m3_pchan_trigger_locked(NULL, &sc->pch[i],
1462 			    PCMTRIG_STOP);
1463 		}
1464 	}
1465 	for (i=0 ; i<sc->rch_cnt ; i++) {
1466 		if (sc->rch[i].active) {
1467 			m3_rchan_trigger_locked(NULL, &sc->rch[i],
1468 			    PCMTRIG_STOP);
1469 		}
1470 	}
1471 	DELAY(10 * 1000); /* give things a chance to stop */
1472 
1473 	/* Disable interrupts */
1474 	m3_wr_2(sc, HOST_INT_CTRL, 0);
1475 	m3_wr_1(sc, ASSP_CONTROL_C, 0);
1476 
1477 	m3_assp_halt(sc);
1478 
1479 	/* Save the state of the ASSP */
1480 	for (i = REV_B_CODE_MEMORY_BEGIN; i <= REV_B_CODE_MEMORY_END; i++)
1481 		sc->savemem[index++] = m3_rd_assp_code(sc, i);
1482 	for (i = REV_B_DATA_MEMORY_BEGIN; i <= REV_B_DATA_MEMORY_END; i++)
1483 		sc->savemem[index++] = m3_rd_assp_data(sc, i);
1484 
1485 	/* Power down the card to D3 state */
1486 	m3_power(sc, 3);
1487 	M3_UNLOCK(sc);
1488 
1489 	return 0;
1490 }
1491 
1492 static int
1493 m3_pci_resume(device_t dev)
1494 {
1495 	struct sc_info *sc = pcm_getdevinfo(dev);
1496 	int i, index = 0;
1497 	u_int8_t reset_state;
1498 
1499 	M3_DEBUG(CHANGE, ("m3_pci_resume\n"));
1500 
1501 	M3_LOCK(sc);
1502 	/* Power the card back to D0 */
1503 	m3_power(sc, 0);
1504 
1505 	m3_config(sc);
1506 
1507 	reset_state = m3_assp_halt(sc);
1508 
1509 	m3_codec_reset(sc);
1510 
1511 	/* Restore the ASSP state */
1512 	for (i = REV_B_CODE_MEMORY_BEGIN; i <= REV_B_CODE_MEMORY_END; i++)
1513 		m3_wr_assp_code(sc, i, sc->savemem[index++]);
1514 	for (i = REV_B_DATA_MEMORY_BEGIN; i <= REV_B_DATA_MEMORY_END; i++)
1515 		m3_wr_assp_data(sc, i, sc->savemem[index++]);
1516 
1517 	/* Restart the DMA engine */
1518 	m3_wr_assp_data(sc, KDATA_DMA_ACTIVE, 0);
1519 
1520 	/* [m3_assp_continue] */
1521 	m3_wr_1(sc, DSP_PORT_CONTROL_REG_B, reset_state | REGB_ENABLE_RESET);
1522 
1523 	m3_amp_enable(sc);
1524 
1525 	m3_enable_ints(sc);
1526 
1527 	M3_UNLOCK(sc); /* XXX */
1528 	if (mixer_reinit(dev) == -1) {
1529 		device_printf(dev, "unable to reinitialize the mixer\n");
1530 		return (ENXIO);
1531 	}
1532 	M3_LOCK(sc);
1533 
1534 	/* Turn the channels back on */
1535 	for (i=0 ; i<sc->pch_cnt ; i++) {
1536 		if (sc->pch[i].active) {
1537 			m3_pchan_trigger_locked(NULL, &sc->pch[i],
1538 			    PCMTRIG_START);
1539 		}
1540 	}
1541 	for (i=0 ; i<sc->rch_cnt ; i++) {
1542 		if (sc->rch[i].active) {
1543 			m3_rchan_trigger_locked(NULL, &sc->rch[i],
1544 			    PCMTRIG_START);
1545 		}
1546 	}
1547 
1548 	M3_UNLOCK(sc);
1549 	return 0;
1550 }
1551 
1552 static int
1553 m3_pci_shutdown(device_t dev)
1554 {
1555 	struct sc_info *sc = pcm_getdevinfo(dev);
1556 
1557 	M3_DEBUG(CALL, ("m3_pci_shutdown\n"));
1558 
1559 	M3_LOCK(sc);
1560 	m3_power(sc, 3); /* power off */
1561 	M3_UNLOCK(sc);
1562 
1563 	return 0;
1564 }
1565 
1566 static u_int8_t
1567 m3_assp_halt(struct sc_info *sc)
1568 {
1569 	u_int8_t data, reset_state;
1570 
1571 	M3_LOCK_ASSERT(sc);
1572 
1573 	data = m3_rd_1(sc, DSP_PORT_CONTROL_REG_B);
1574 	reset_state = data & ~REGB_STOP_CLOCK; /* remember for continue */
1575         DELAY(10 * 1000);
1576 	m3_wr_1(sc, DSP_PORT_CONTROL_REG_B, reset_state & ~REGB_ENABLE_RESET);
1577         DELAY(10 * 1000); /* necessary? */
1578 
1579 	return reset_state;
1580 }
1581 
1582 static void
1583 m3_config(struct sc_info *sc)
1584 {
1585 	u_int32_t data, hv_cfg;
1586 	int hint;
1587 
1588 	M3_LOCK_ASSERT(sc);
1589 
1590 	M3_UNLOCK(sc);
1591 	/*
1592 	 * The volume buttons can be wired up via two different sets of pins.
1593 	 * This presents a problem since we can't tell which way it's
1594 	 * configured.  Allow the user to set a hint in order to twiddle
1595 	 * the proper bits.
1596 	 */
1597 	if (resource_int_value(device_get_name(sc->dev),
1598 	                       device_get_unit(sc->dev),
1599 			       "hwvol_config", &hint) == 0)
1600 		hv_cfg = (hint > 0) ? HV_BUTTON_FROM_GD : 0;
1601 	else
1602 		hv_cfg = HV_BUTTON_FROM_GD;
1603 	M3_LOCK(sc);
1604 
1605 	data = pci_read_config(sc->dev, PCI_ALLEGRO_CONFIG, 4);
1606 	data &= ~HV_BUTTON_FROM_GD;
1607 	data |= REDUCED_DEBOUNCE | HV_CTRL_ENABLE | hv_cfg;
1608 	data |= PM_CTRL_ENABLE | CLK_DIV_BY_49 | USE_PCI_TIMING;
1609 	pci_write_config(sc->dev, PCI_ALLEGRO_CONFIG, data, 4);
1610 
1611 	m3_wr_1(sc, ASSP_CONTROL_B, RESET_ASSP);
1612 	data = pci_read_config(sc->dev, PCI_ALLEGRO_CONFIG, 4);
1613 	data &= ~INT_CLK_SELECT;
1614 	if (sc->which == ESS_MAESTRO3) {
1615 		data &= ~INT_CLK_MULT_ENABLE;
1616 		data |= INT_CLK_SRC_NOT_PCI;
1617 	}
1618 	data &= ~(CLK_MULT_MODE_SELECT | CLK_MULT_MODE_SELECT_2);
1619 	pci_write_config(sc->dev, PCI_ALLEGRO_CONFIG, data, 4);
1620 
1621 	if (sc->which == ESS_ALLEGRO_1) {
1622 		data = pci_read_config(sc->dev, PCI_USER_CONFIG, 4);
1623 		data |= IN_CLK_12MHZ_SELECT;
1624 		pci_write_config(sc->dev, PCI_USER_CONFIG, data, 4);
1625 	}
1626 
1627 	data = m3_rd_1(sc, ASSP_CONTROL_A);
1628 	data &= ~(DSP_CLK_36MHZ_SELECT | ASSP_CLK_49MHZ_SELECT);
1629 	data |= ASSP_CLK_49MHZ_SELECT; /*XXX assumes 49MHZ dsp XXX*/
1630 	data |= ASSP_0_WS_ENABLE;
1631 	m3_wr_1(sc, ASSP_CONTROL_A, data);
1632 
1633 	m3_wr_1(sc, ASSP_CONTROL_B, RUN_ASSP);
1634 }
1635 
1636 static void
1637 m3_enable_ints(struct sc_info *sc)
1638 {
1639 	u_int8_t data;
1640 
1641 	m3_wr_2(sc, HOST_INT_CTRL, ASSP_INT_ENABLE | HV_INT_ENABLE);
1642 	data = m3_rd_1(sc, ASSP_CONTROL_C);
1643 	m3_wr_1(sc, ASSP_CONTROL_C, data | ASSP_HOST_INT_ENABLE);
1644 }
1645 
1646 static void
1647 m3_amp_enable(struct sc_info *sc)
1648 {
1649 	u_int32_t gpo, polarity_port, polarity;
1650 	u_int16_t data;
1651 
1652 	M3_LOCK_ASSERT(sc);
1653 
1654 	switch (sc->which) {
1655         case ESS_ALLEGRO_1:
1656                 polarity_port = 0x1800;
1657                 break;
1658 	case ESS_MAESTRO3:
1659                 polarity_port = 0x1100;
1660                 break;
1661         default:
1662 		panic("bad sc->which");
1663 	}
1664 	gpo = (polarity_port >> 8) & 0x0f;
1665 	polarity = polarity_port >> 12;
1666 	polarity = !polarity; /* enable */
1667 	polarity = polarity << gpo;
1668 	gpo = 1 << gpo;
1669 	m3_wr_2(sc, GPIO_MASK, ~gpo);
1670 	data = m3_rd_2(sc, GPIO_DIRECTION);
1671 	m3_wr_2(sc, GPIO_DIRECTION, data | gpo);
1672 	data = GPO_SECONDARY_AC97 | GPO_PRIMARY_AC97 | polarity;
1673 	m3_wr_2(sc, GPIO_DATA, data);
1674 	m3_wr_2(sc, GPIO_MASK, ~0);
1675 }
1676 
1677 static void
1678 m3_codec_reset(struct sc_info *sc)
1679 {
1680 	u_int16_t data, dir;
1681 	int retry = 0;
1682 
1683 	M3_LOCK_ASSERT(sc);
1684 	do {
1685 		data = m3_rd_2(sc, GPIO_DIRECTION);
1686 		dir = data | 0x10; /* assuming pci bus master? */
1687 
1688 		/* [[remote_codec_config]] */
1689 		data = m3_rd_2(sc, RING_BUS_CTRL_B);
1690 		m3_wr_2(sc, RING_BUS_CTRL_B, data & ~SECOND_CODEC_ID_MASK);
1691 		data = m3_rd_2(sc, SDO_OUT_DEST_CTRL);
1692 		m3_wr_2(sc, SDO_OUT_DEST_CTRL, data & ~COMMAND_ADDR_OUT);
1693 		data = m3_rd_2(sc, SDO_IN_DEST_CTRL);
1694 		m3_wr_2(sc, SDO_IN_DEST_CTRL, data & ~STATUS_ADDR_IN);
1695 
1696 		m3_wr_2(sc, RING_BUS_CTRL_A, IO_SRAM_ENABLE);
1697 		DELAY(20);
1698 
1699 		m3_wr_2(sc, GPIO_DIRECTION, dir & ~GPO_PRIMARY_AC97);
1700 		m3_wr_2(sc, GPIO_MASK, ~GPO_PRIMARY_AC97);
1701 		m3_wr_2(sc, GPIO_DATA, 0);
1702 		m3_wr_2(sc, GPIO_DIRECTION, dir | GPO_PRIMARY_AC97);
1703 		DELAY(sc->delay1 * 1000); /*delay1 (ALLEGRO:50, MAESTRO3:20)*/
1704 		m3_wr_2(sc, GPIO_DATA, GPO_PRIMARY_AC97);
1705 		DELAY(5);
1706 		m3_wr_2(sc, RING_BUS_CTRL_A, IO_SRAM_ENABLE |
1707 		    SERIAL_AC_LINK_ENABLE);
1708 		m3_wr_2(sc, GPIO_MASK, ~0);
1709 		DELAY(sc->delay2 * 1000); /*delay2 (ALLEGRO:800, MAESTRO3:500)*/
1710 
1711 		/* [[try read vendor]] */
1712 		data = m3_rdcd(NULL, sc, 0x7c);
1713 		if ((data == 0) || (data == 0xffff)) {
1714 			retry++;
1715 			if (retry > 3) {
1716 				device_printf(sc->dev, "Codec reset failed\n");
1717 				break;
1718 			}
1719 			device_printf(sc->dev, "Codec reset retry\n");
1720 		} else retry = 0;
1721 	} while (retry);
1722 }
1723 
1724 static device_method_t m3_methods[] = {
1725 	DEVMETHOD(device_probe,		m3_pci_probe),
1726 	DEVMETHOD(device_attach,	m3_pci_attach),
1727 	DEVMETHOD(device_detach,	m3_pci_detach),
1728 	DEVMETHOD(device_suspend,       m3_pci_suspend),
1729 	DEVMETHOD(device_resume,        m3_pci_resume),
1730 	DEVMETHOD(device_shutdown,      m3_pci_shutdown),
1731 	{ 0, 0 }
1732 };
1733 
1734 static driver_t m3_driver = {
1735 	"pcm",
1736 	m3_methods,
1737 	PCM_SOFTC_SIZE,
1738 };
1739 
1740 DRIVER_MODULE(snd_maestro3, pci, m3_driver, pcm_devclass, 0, 0);
1741 MODULE_DEPEND(snd_maestro3, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
1742 MODULE_VERSION(snd_maestro3, 1);
1743