xref: /netbsd/sys/dev/pci/esm.c (revision bf9ec67e)
1 /*      $NetBSD: esm.c,v 1.13 2002/01/14 19:24:39 pooka Exp $      */
2 
3 /*-
4  * Copyright (c) 2000, 2001 Rene Hexel <rh@netbsd.org>
5  * All rights reserved.
6  *
7  * Copyright (c) 2000 Taku YAMAMOTO <taku@cent.saitama-u.ac.jp>
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  * Taku Id: maestro.c,v 1.12 2000/09/06 03:32:34 taku Exp
32  * FreeBSD: /c/ncvs/src/sys/dev/sound/pci/maestro.c,v 1.4 2000/12/18 01:36:35 cg Exp
33  */
34 
35 /*
36  * TODO:
37  *	- hardware volume support
38  *	- recording
39  *	- MIDI support
40  *	- joystick support
41  *
42  *
43  * Credits:
44  *
45  * This code is based on the FreeBSD driver written by Taku YAMAMOTO
46  *
47  *
48  * Original credits from the FreeBSD driver:
49  *
50  * Part of this code (especially in many magic numbers) was heavily inspired
51  * by the Linux driver originally written by
52  * Alan Cox <alan.cox@linux.org>, modified heavily by
53  * Zach Brown <zab@zabbo.net>.
54  *
55  * busdma()-ize and buffer size reduction were suggested by
56  * Cameron Grant <gandalf@vilnya.demon.co.uk>.
57  * Also he showed me the way to use busdma() suite.
58  *
59  * Internal speaker problems on NEC VersaPro's and Dell Inspiron 7500
60  * were looked at by
61  * Munehiro Matsuda <haro@tk.kubota.co.jp>,
62  * who brought patches based on the Linux driver with some simplification.
63  */
64 
65 #include <sys/cdefs.h>
66 __KERNEL_RCSID(0, "$NetBSD: esm.c,v 1.13 2002/01/14 19:24:39 pooka Exp $");
67 
68 #include <sys/param.h>
69 #include <sys/systm.h>
70 #include <sys/kernel.h>
71 #include <sys/malloc.h>
72 #include <sys/device.h>
73 
74 #include <machine/bus.h>
75 
76 #include <sys/audioio.h>
77 #include <dev/audio_if.h>
78 #include <dev/mulaw.h>
79 #include <dev/auconv.h>
80 #include <dev/ic/ac97var.h>
81 #include <dev/ic/ac97reg.h>
82 
83 #include <dev/pci/pcidevs.h>
84 #include <dev/pci/pcivar.h>
85 
86 #include <dev/pci/esmreg.h>
87 #include <dev/pci/esmvar.h>
88 
89 #define	PCI_CBIO		0x10	/* Configuration Base I/O Address */
90 
91 /* Debug */
92 #ifdef AUDIO_DEBUG
93 #define DPRINTF(l,x)	do { if (esm_debug & (l)) printf x; } while(0)
94 #define DUMPREG(x)	do { if (esm_debug & ESM_DEBUG_REG)	\
95 				 esm_dump_regs(x); } while(0)
96 int esm_debug = 0xfffc;
97 #define ESM_DEBUG_CODECIO	0x0001
98 #define ESM_DEBUG_IRQ		0x0002
99 #define ESM_DEBUG_DMA		0x0004
100 #define ESM_DEBUG_TIMER		0x0008
101 #define ESM_DEBUG_REG		0x0010
102 #define ESM_DEBUG_PARAM		0x0020
103 #define ESM_DEBUG_APU		0x0040
104 #define ESM_DEBUG_CODEC		0x0080
105 #define ESM_DEBUG_PCI		0x0100
106 #define ESM_DEBUG_RESUME	0x0200
107 #else
108 #define DPRINTF(x,y)	/* nothing */
109 #define DUMPREG(x)	/* nothing */
110 #endif
111 
112 #ifdef DIAGNOSTIC
113 #define RANGE(n, l, h)	if ((n) < (l) || (n) >= (h))			\
114 		printf (#n "=%d out of range (%d, %d) in "		\
115 		__FILE__ ", line %d\n", (n), (l), (h), __LINE__)
116 #else
117 #define RANGE(x,y,z)	/* nothing */
118 #endif
119 
120 #define inline __inline
121 
122 static inline void	 ringbus_setdest(struct esm_softc *, int, int);
123 
124 static inline u_int16_t	wp_rdreg(struct esm_softc *, u_int16_t);
125 static inline void	wp_wrreg(struct esm_softc *, u_int16_t, u_int16_t);
126 static inline u_int16_t	wp_rdapu(struct esm_softc *, int, u_int16_t);
127 static inline void	wp_wrapu(struct esm_softc *, int, u_int16_t,
128 			    u_int16_t);
129 static inline void	wp_settimer(struct esm_softc *, u_int);
130 static inline void	wp_starttimer(struct esm_softc *);
131 static inline void	wp_stoptimer(struct esm_softc *);
132 
133 static inline u_int16_t	wc_rdreg(struct esm_softc *, u_int16_t);
134 static inline void	wc_wrreg(struct esm_softc *, u_int16_t, u_int16_t);
135 static inline u_int16_t	wc_rdchctl(struct esm_softc *, int);
136 static inline void	wc_wrchctl(struct esm_softc *, int, u_int16_t);
137 
138 static inline u_int	calc_timer_freq(struct esm_chinfo*);
139 static void		set_timer(struct esm_softc *);
140 
141 static void		esmch_set_format(struct esm_chinfo *,
142 			    struct audio_params *p);
143 
144 /* Power Management */
145 void esm_powerhook(int, void *);
146 
147 struct cfattach esm_ca = {
148 	sizeof(struct esm_softc), esm_match, esm_attach
149 };
150 
151 struct audio_hw_if esm_hw_if = {
152 	esm_open,
153 	esm_close,
154 	NULL,				/* drain */
155 	esm_query_encoding,
156 	esm_set_params,
157 	esm_round_blocksize,
158 	NULL,				/* commit_settings */
159 	esm_init_output,
160 	NULL,				/* init_input */
161 	NULL,				/* start_output */
162 	NULL,				/* start_input */
163 	esm_halt_output,
164 	esm_halt_input,
165 	NULL,				/* speaker_ctl */
166 	esm_getdev,
167 	NULL,				/* getfd */
168 	esm_set_port,
169 	esm_get_port,
170 	esm_query_devinfo,
171 	esm_malloc,
172 	esm_free,
173 	esm_round_buffersize,
174 	esm_mappage,
175 	esm_get_props,
176 	esm_trigger_output,
177 	esm_trigger_input,
178 	NULL,
179 };
180 
181 struct audio_device esm_device = {
182 	"ESS Maestro",
183 	"",
184 	"esm"
185 };
186 
187 
188 static audio_encoding_t esm_encoding[] = {
189 	{ 0, AudioEulinear, AUDIO_ENCODING_ULINEAR, 8, 0 },
190 	{ 1, AudioEmulaw, AUDIO_ENCODING_ULAW, 8,
191 		AUDIO_ENCODINGFLAG_EMULATED },
192 	{ 2, AudioEalaw, AUDIO_ENCODING_ALAW, 8, AUDIO_ENCODINGFLAG_EMULATED },
193 	{ 3, AudioEslinear, AUDIO_ENCODING_SLINEAR, 8, 0 },
194 	{ 4, AudioEslinear_le, AUDIO_ENCODING_SLINEAR_LE, 16, 0 },
195 	{ 5, AudioEulinear_le, AUDIO_ENCODING_ULINEAR_LE, 16,
196 		AUDIO_ENCODINGFLAG_EMULATED },
197 	{ 6, AudioEslinear_be, AUDIO_ENCODING_SLINEAR_BE, 16,
198 		AUDIO_ENCODINGFLAG_EMULATED },
199 	{ 7, AudioEulinear_be, AUDIO_ENCODING_ULINEAR_BE, 16,
200 		AUDIO_ENCODINGFLAG_EMULATED },
201 };
202 
203 #define MAESTRO_NENCODINGS 8
204 
205 
206 static const struct esm_quirks esm_quirks[] = {
207 	/* COMPAL 38W2 OEM Notebook, e.g. Dell INSPIRON 5000e */
208 	{ PCI_VENDOR_COMPAL, PCI_PRODUCT_COMPAL_38W2, ESM_QUIRKF_SWAPPEDCH },
209 
210 	/* COMPAQ Armada M700 Notebook */
211 	{ PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_M700, ESM_QUIRKF_SWAPPEDCH },
212 
213 	/* NEC Versa Pro LX VA26D */
214 	{ PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VA26D, ESM_QUIRKF_GPIO },
215 
216 	/* NEC Versa LX */
217 	{ PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VERSALX, ESM_QUIRKF_GPIO },
218 
219 	/* Toshiba Portege */
220 	{ PCI_VENDOR_TOSHIBA2, PCI_PRODUCT_TOSHIBA2_PORTEGE, ESM_QUIRKF_SWAPPEDCH }
221 };
222 
223 enum esm_quirk_flags
224 esm_get_quirks(pcireg_t subid)
225 {
226 	int i;
227 
228 	for (i = 0; i < (sizeof esm_quirks / sizeof esm_quirks[0]); i++) {
229 		if (PCI_VENDOR(subid) == esm_quirks[i].eq_vendor &&
230 		    PCI_PRODUCT(subid) == esm_quirks[i].eq_product) {
231 			return esm_quirks[i].eq_quirks;
232 		}
233 	}
234 
235 	return 0;
236 }
237 
238 
239 #ifdef AUDIO_DEBUG
240 struct esm_reg_info {
241 	int	offset;			/* register offset */
242 	int	width;			/* 1/2/4 bytes */
243 } dump_regs[] = {
244 	{ PORT_WAVCACHE_CTRL,		2 },
245 	{ PORT_HOSTINT_CTRL,		2 },
246 	{ PORT_HOSTINT_STAT,		2 },
247 	{ PORT_HWVOL_VOICE_SHADOW,	1 },
248 	{ PORT_HWVOL_VOICE,		1 },
249 	{ PORT_HWVOL_MASTER_SHADOW,	1 },
250 	{ PORT_HWVOL_MASTER,		1 },
251 	{ PORT_RINGBUS_CTRL,		4 },
252 	{ PORT_GPIO_DATA,		2 },
253 	{ PORT_GPIO_MASK,		2 },
254 	{ PORT_GPIO_DIR,		2 },
255 	{ PORT_ASSP_CTRL_A,		1 },
256 	{ PORT_ASSP_CTRL_B,		1 },
257 	{ PORT_ASSP_CTRL_C,		1 },
258 	{ PORT_ASSP_INT_STAT,		1 }
259 };
260 
261 static void
262 esm_dump_regs(struct esm_softc *ess)
263 {
264 	int i;
265 
266 	printf("%s registers:", ess->sc_dev.dv_xname);
267 	for (i = 0; i < (sizeof dump_regs / sizeof dump_regs[0]); i++) {
268 		if (i % 5 == 0)
269 			printf("\n");
270 		printf("0x%2.2x: ", dump_regs[i].offset);
271 		switch(dump_regs[i].width) {
272 		case 4:
273 			printf("%8.8x, ", bus_space_read_4(ess->st, ess->sh,
274 			    dump_regs[i].offset));
275 			break;
276 		case 2:
277 			printf("%4.4x,     ", bus_space_read_2(ess->st, ess->sh,
278 			    dump_regs[i].offset));
279 			break;
280 		default:
281 			printf("%2.2x,       ",
282 			    bus_space_read_1(ess->st, ess->sh,
283 			    dump_regs[i].offset));
284 		}
285 	}
286 	printf("\n");
287 }
288 #endif
289 
290 
291 /* -----------------------------
292  * Subsystems.
293  */
294 
295 /* Codec/Ringbus */
296 
297 /* -------------------------------------------------------------------- */
298 
299 int
300 esm_read_codec(void *sc, u_int8_t regno, u_int16_t *result)
301 {
302 	struct esm_softc *ess = sc;
303 	unsigned t;
304 
305 	/* We have to wait for a SAFE time to write addr/data */
306 	for (t = 0; t < 20; t++) {
307 		if ((bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
308 		    & CODEC_STAT_MASK) != CODEC_STAT_PROGLESS)
309 			break;
310 		delay(2);	/* 20.8us / 13 */
311 	}
312 	if (t == 20)
313 		printf("%s: esm_read_codec() PROGLESS timed out.\n",
314 		    ess->sc_dev.dv_xname);
315 
316 	bus_space_write_1(ess->st, ess->sh, PORT_CODEC_CMD,
317 	    CODEC_CMD_READ | regno);
318 	delay(21);	/* AC97 cycle = 20.8usec */
319 
320 	/* Wait for data retrieve */
321 	for (t = 0; t < 20; t++) {
322 		if ((bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
323 		    & CODEC_STAT_MASK) == CODEC_STAT_RW_DONE)
324 			break;
325 		delay(2);	/* 20.8us / 13 */
326 	}
327 	if (t == 20)
328 		/* Timed out, but perform dummy read. */
329 		printf("%s: esm_read_codec() RW_DONE timed out.\n",
330 		    ess->sc_dev.dv_xname);
331 
332 	*result = bus_space_read_2(ess->st, ess->sh, PORT_CODEC_REG);
333 
334 	return 0;
335 }
336 
337 int
338 esm_write_codec(void *sc, u_int8_t regno, u_int16_t data)
339 {
340 	struct esm_softc *ess = sc;
341 	unsigned t;
342 
343 	/* We have to wait for a SAFE time to write addr/data */
344 	for (t = 0; t < 20; t++) {
345 		if ((bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
346 		    & CODEC_STAT_MASK) != CODEC_STAT_PROGLESS)
347 			break;
348 		delay(2);	/* 20.8us / 13 */
349 	}
350 	if (t == 20) {
351 		/* Timed out. Abort writing. */
352 		printf("%s: esm_write_codec() PROGLESS timed out.\n",
353 		    ess->sc_dev.dv_xname);
354 		return -1;
355 	}
356 
357 	bus_space_write_2(ess->st, ess->sh, PORT_CODEC_REG, data);
358 	bus_space_write_1(ess->st, ess->sh, PORT_CODEC_CMD,
359 	    CODEC_CMD_WRITE | regno);
360 
361 	return 0;
362 }
363 
364 /* -------------------------------------------------------------------- */
365 
366 static inline void
367 ringbus_setdest(struct esm_softc *ess, int src, int dest)
368 {
369 	u_int32_t data;
370 
371 	data = bus_space_read_4(ess->st, ess->sh, PORT_RINGBUS_CTRL);
372 	data &= ~(0xfU << src);
373 	data |= (0xfU & dest) << src;
374 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, data);
375 }
376 
377 /* Wave Processor */
378 
379 static inline u_int16_t
380 wp_rdreg(struct esm_softc *ess, u_int16_t reg)
381 {
382 	bus_space_write_2(ess->st, ess->sh, PORT_DSP_INDEX, reg);
383 	return bus_space_read_2(ess->st, ess->sh, PORT_DSP_DATA);
384 }
385 
386 static inline void
387 wp_wrreg(struct esm_softc *ess, u_int16_t reg, u_int16_t data)
388 {
389 	bus_space_write_2(ess->st, ess->sh, PORT_DSP_INDEX, reg);
390 	bus_space_write_2(ess->st, ess->sh, PORT_DSP_DATA, data);
391 }
392 
393 static inline void
394 apu_setindex(struct esm_softc *ess, u_int16_t reg)
395 {
396 	int t;
397 
398 	wp_wrreg(ess, WPREG_CRAM_PTR, reg);
399 	/* Sometimes WP fails to set apu register index. */
400 	for (t = 0; t < 1000; t++) {
401 		if (bus_space_read_2(ess->st, ess->sh, PORT_DSP_DATA) == reg)
402 			break;
403 		bus_space_write_2(ess->st, ess->sh, PORT_DSP_DATA, reg);
404 	}
405 	if (t == 1000)
406 		printf("%s: apu_setindex() timed out.\n", ess->sc_dev.dv_xname);
407 }
408 
409 static inline u_int16_t
410 wp_rdapu(struct esm_softc *ess, int ch, u_int16_t reg)
411 {
412 	u_int16_t ret;
413 
414 	apu_setindex(ess, ((unsigned)ch << 4) + reg);
415 	ret = wp_rdreg(ess, WPREG_DATA_PORT);
416 	return ret;
417 }
418 
419 static inline void
420 wp_wrapu(struct esm_softc *ess, int ch, u_int16_t reg, u_int16_t data)
421 {
422 	int t;
423 
424 	DPRINTF(ESM_DEBUG_APU,
425 	    ("wp_wrapu(%p, ch=%d, reg=0x%x, data=0x%04x)\n",
426 	    ess, ch, reg, data));
427 
428 	apu_setindex(ess, ((unsigned)ch << 4) + reg);
429 	wp_wrreg(ess, WPREG_DATA_PORT, data);
430 	for (t = 0; t < 1000; t++) {
431 		if (bus_space_read_2(ess->st, ess->sh, PORT_DSP_DATA) == data)
432 			break;
433 		bus_space_write_2(ess->st, ess->sh, PORT_DSP_DATA, data);
434 	}
435 	if (t == 1000)
436 		printf("%s: wp_wrapu() timed out.\n", ess->sc_dev.dv_xname);
437 }
438 
439 static inline void
440 wp_settimer(struct esm_softc *ess, u_int freq)
441 {
442 	u_int clock = 48000 << 2;
443 	u_int prescale = 0, divide = (freq != 0) ? (clock / freq) : ~0;
444 
445 	RANGE(divide, WPTIMER_MINDIV, WPTIMER_MAXDIV);
446 
447 	for (; divide > 32 << 1; divide >>= 1)
448 		prescale++;
449 	divide = (divide + 1) >> 1;
450 
451 	for (; prescale < 7 && divide > 2 && !(divide & 1); divide >>= 1)
452 		prescale++;
453 
454 	DPRINTF(ESM_DEBUG_TIMER,
455 	    ("wp_settimer(%p, %u): clock = %u, prescale = %u, divide = %u\n",
456 	    ess, freq, clock, prescale, divide));
457 
458 	wp_wrreg(ess, WPREG_TIMER_ENABLE, 0);
459 	wp_wrreg(ess, WPREG_TIMER_FREQ,
460 	    (prescale << WP_TIMER_FREQ_PRESCALE_SHIFT) | (divide - 1));
461 	wp_wrreg(ess, WPREG_TIMER_ENABLE, 1);
462 }
463 
464 static inline void
465 wp_starttimer(struct esm_softc *ess)
466 {
467 	wp_wrreg(ess, WPREG_TIMER_START, 1);
468 }
469 
470 static inline void
471 wp_stoptimer(struct esm_softc *ess)
472 {
473 	wp_wrreg(ess, WPREG_TIMER_START, 0);
474 	bus_space_write_2(ess->st, ess->sh, PORT_INT_STAT, 1);
475 }
476 
477 /* WaveCache */
478 
479 static inline u_int16_t
480 wc_rdreg(struct esm_softc *ess, u_int16_t reg)
481 {
482 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_INDEX, reg);
483 	return bus_space_read_2(ess->st, ess->sh, PORT_WAVCACHE_DATA);
484 }
485 
486 static inline void
487 wc_wrreg(struct esm_softc *ess, u_int16_t reg, u_int16_t data)
488 {
489 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_INDEX, reg);
490 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_DATA, data);
491 }
492 
493 static inline u_int16_t
494 wc_rdchctl(struct esm_softc *ess, int ch)
495 {
496 	return wc_rdreg(ess, ch << 3);
497 }
498 
499 static inline void
500 wc_wrchctl(struct esm_softc *ess, int ch, u_int16_t data)
501 {
502 	wc_wrreg(ess, ch << 3, data);
503 }
504 
505 /* Power management */
506 
507 void
508 esm_power(struct esm_softc *ess, int status)
509 {
510 	pcireg_t data;
511 	int pmcapreg;
512 
513 	if (pci_get_capability(ess->pc, ess->tag, PCI_CAP_PWRMGMT,
514 	    &pmcapreg, 0)) {
515 		data = pci_conf_read(ess->pc, ess->tag, pmcapreg + 4);
516 		if ((data && PCI_PMCSR_STATE_MASK) != status)
517 			pci_conf_write(ess->pc, ess->tag, pmcapreg + 4, status);
518 	}
519 }
520 
521 
522 /* -----------------------------
523  * Controller.
524  */
525 
526 int
527 esm_attach_codec(void *sc, struct ac97_codec_if *codec_if)
528 {
529 	struct esm_softc *ess = sc;
530 
531 	ess->codec_if = codec_if;
532 
533 	return 0;
534 }
535 
536 void
537 esm_reset_codec(void *sc)
538 {
539 }
540 
541 
542 enum ac97_host_flags
543 esm_flags_codec(void *sc)
544 {
545 	struct esm_softc *ess = sc;
546 
547 	return ess->codec_flags;
548 }
549 
550 
551 void
552 esm_initcodec(struct esm_softc *ess)
553 {
554 	u_int16_t data;
555 
556 	DPRINTF(ESM_DEBUG_CODEC, ("esm_initcodec(%p)\n", ess));
557 
558 	if (bus_space_read_4(ess->st, ess->sh, PORT_RINGBUS_CTRL)
559 	    & RINGBUS_CTRL_ACLINK_ENABLED) {
560 		bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, 0);
561 		delay(104);	/* 20.8us * (4 + 1) */
562 	}
563 	/* XXX - 2nd codec should be looked at. */
564 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
565 	    RINGBUS_CTRL_AC97_SWRESET);
566 	delay(2);
567 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
568 	    RINGBUS_CTRL_ACLINK_ENABLED);
569 	delay(21);
570 
571 	esm_read_codec(ess, 0, &data);
572 	if (bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
573 	    & CODEC_STAT_MASK) {
574 		bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, 0);
575 		delay(21);
576 
577 		/* Try cold reset. */
578 		printf("%s: will perform cold reset.\n", ess->sc_dev.dv_xname);
579 		data = bus_space_read_2(ess->st, ess->sh, PORT_GPIO_DIR);
580 		if (pci_conf_read(ess->pc, ess->tag, 0x58) & 1)
581 			data |= 0x10;
582 		data |= 0x009 &
583 		    ~bus_space_read_2(ess->st, ess->sh, PORT_GPIO_DATA);
584 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_MASK, 0xff6);
585 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DIR,
586 		    data | 0x009);
587 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA, 0x000);
588 		delay(2);
589 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA, 0x001);
590 		delay(1);
591 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA, 0x009);
592 		delay(500000);
593 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DIR, data);
594 		delay(84);	/* 20.8us * 4 */
595 		bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
596 		    RINGBUS_CTRL_ACLINK_ENABLED);
597 		delay(21);
598 	}
599 }
600 
601 void
602 esm_init(struct esm_softc *ess)
603 {
604 	/* Reset direct sound. */
605 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL,
606 	    HOSTINT_CTRL_DSOUND_RESET);
607 	delay(10000);
608 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL, 0);
609 	delay(10000);
610 
611 	/* Enable direct sound interruption. */
612 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL,
613 	    HOSTINT_CTRL_DSOUND_INT_ENABLED);
614 
615 	/* Setup Wave Processor. */
616 
617 	/* Enable WaveCache */
618 	wp_wrreg(ess, WPREG_WAVE_ROMRAM,
619 	    WP_WAVE_VIRTUAL_ENABLED | WP_WAVE_DRAM_ENABLED);
620 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_CTRL,
621 	    WAVCACHE_ENABLED | WAVCACHE_WTSIZE_4MB);
622 
623 	/* Setup Codec/Ringbus. */
624 	esm_initcodec(ess);
625 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
626 	    RINGBUS_CTRL_RINGBUS_ENABLED | RINGBUS_CTRL_ACLINK_ENABLED);
627 
628 	wp_wrreg(ess, WPREG_BASE, 0x8500);	/* Parallel I/O */
629 	ringbus_setdest(ess, RINGBUS_SRC_ADC,
630 	    RINGBUS_DEST_STEREO | RINGBUS_DEST_DSOUND_IN);
631 	ringbus_setdest(ess, RINGBUS_SRC_DSOUND,
632 	    RINGBUS_DEST_STEREO | RINGBUS_DEST_DAC);
633 
634 	/* Setup ASSP. Needed for Dell Inspiron 7500? */
635 	bus_space_write_1(ess->st, ess->sh, PORT_ASSP_CTRL_B, 0x00);
636 	bus_space_write_1(ess->st, ess->sh, PORT_ASSP_CTRL_A, 0x03);
637 	bus_space_write_1(ess->st, ess->sh, PORT_ASSP_CTRL_C, 0x00);
638 
639 	/*
640 	 * Setup GPIO.
641 	 * There seems to be speciality with NEC systems.
642 	 */
643 	if (esm_get_quirks(ess->subid) & ESM_QUIRKF_GPIO) {
644 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_MASK,
645 		    0x9ff);
646 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DIR,
647 		    bus_space_read_2(ess->st, ess->sh, PORT_GPIO_DIR) |
648 			0x600);
649 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA,
650 		    0x200);
651 	}
652 
653 	DUMPREG(ess);
654 }
655 
656 
657 /* Channel controller. */
658 
659 int
660 esm_init_output (void *sc, void *start, int size)
661 {
662 	struct esm_softc *ess = sc;
663 	struct esm_dma *p;
664 	u_int32_t data;
665 
666 	for (p = ess->sc_dmas; p && KERNADDR(p) != start; p = p->next)
667 		;
668 	if (!p) {
669 		printf("%s: esm_init_output: bad addr %p\n",
670 		    ess->sc_dev.dv_xname, start);
671 		return EINVAL;
672 	}
673 
674 	ess->pch.base = DMAADDR(p) & ~0xFFF;
675 
676 	DPRINTF(ESM_DEBUG_DMA, ("%s: pch.base = 0x%x\n",
677 		ess->sc_dev.dv_xname, ess->pch.base));
678 
679 	/* set DMA base address */
680 	for (data = WAVCACHE_PCMBAR; data < WAVCACHE_PCMBAR + 4; data++)
681 		wc_wrreg(ess, data, ess->pch.base >> WAVCACHE_BASEADDR_SHIFT);
682 
683 	return 0;
684 }
685 
686 
687 int
688 esm_trigger_output(void *sc, void *start, void *end, int blksize,
689     void (*intr)(void *), void *arg, struct audio_params *param)
690 {
691 	struct esm_softc *ess = sc;
692 	struct esm_chinfo *ch = &ess->pch;
693 	struct esm_dma *p;
694 	int pan = 0, choffset;
695 	int i, nch = 1;
696 	unsigned speed = ch->sample_rate, offset, wpwa, dv;
697 	size_t size;
698 	u_int16_t apuch = ch->num << 1;
699 
700 	DPRINTF(ESM_DEBUG_DMA,
701 	    ("esm_trigger_output(%p, %p, %p, 0x%x, %p, %p, %p)\n",
702 	    sc, start, end, blksize, intr, arg, param));
703 
704 #ifdef DIAGNOSTIC
705 	if (ess->pactive) {
706 		printf("%s: esm_trigger_output: already running",
707 		    ess->sc_dev.dv_xname);
708 		return EINVAL;
709 	}
710 #endif
711 
712 	ess->sc_pintr = intr;
713 	ess->sc_parg = arg;
714 	for (p = ess->sc_dmas; p && KERNADDR(p) != start; p = p->next)
715 		;
716 	if (!p) {
717 		printf("%s: esm_trigger_output: bad addr %p\n",
718 		    ess->sc_dev.dv_xname, start);
719 		return EINVAL;
720 	}
721 
722 	ess->pch.blocksize = blksize;
723 	ess->pch.apublk = blksize >> 1;
724 	ess->pactive = 1;
725 
726 	size = (size_t)(((caddr_t)end - (caddr_t)start) >> 1);
727 	choffset = DMAADDR(p) - ess->pch.base;
728 	offset = choffset >> 1;
729 	wpwa = APU_USE_SYSMEM | (offset >> 9);
730 
731 	DPRINTF(ESM_DEBUG_DMA,
732 	    ("choffs=0x%x, wpwa=0x%x, size=0x%x words\n",
733 	    choffset, wpwa, size));
734 
735 	switch (ch->aputype) {
736 	case APUTYPE_16BITSTEREO:
737 		ess->pch.apublk >>= 1;
738 		wpwa >>= 1;
739 		size >>= 1;
740 		offset >>= 1;
741 		/* FALLTHROUGH */
742 	case APUTYPE_8BITSTEREO:
743 		if (ess->codec_flags & AC97_HOST_SWAPPED_CHANNELS)
744 			pan = 8;
745 		else
746 			pan = -8;
747 		nch++;
748 		break;
749 	case APUTYPE_8BITLINEAR:
750 		ess->pch.apublk <<= 1;
751 		speed >>= 1;
752 		break;
753 	}
754 
755 	ess->pch.apubuf = size;
756 	ess->pch.nextirq = ess->pch.apublk;
757 
758 	set_timer(ess);
759 	wp_starttimer(ess);
760 
761 	dv = (((speed % 48000) << 16) + 24000) / 48000
762 	    + ((speed / 48000) << 16);
763 
764 	for (i = nch-1; i >= 0; i--) {
765 		wp_wrapu(ess, apuch + i, APUREG_WAVESPACE, wpwa & 0xff00);
766 		wp_wrapu(ess, apuch + i, APUREG_CURPTR, offset);
767 		wp_wrapu(ess, apuch + i, APUREG_ENDPTR, offset + size);
768 		wp_wrapu(ess, apuch + i, APUREG_LOOPLEN, size - 1);
769 		wp_wrapu(ess, apuch + i, APUREG_AMPLITUDE, 0xe800);
770 		wp_wrapu(ess, apuch + i, APUREG_POSITION, 0x8f00
771 		    | (RADIUS_CENTERCIRCLE << APU_RADIUS_SHIFT)
772 		    | ((PAN_FRONT + pan) << APU_PAN_SHIFT));
773 		wp_wrapu(ess, apuch + i, APUREG_FREQ_LOBYTE, APU_plus6dB
774 		    | ((dv & 0xff) << APU_FREQ_LOBYTE_SHIFT));
775 		wp_wrapu(ess, apuch + i, APUREG_FREQ_HIWORD, dv >> 8);
776 
777 		if (ch->aputype == APUTYPE_16BITSTEREO)
778 			wpwa |= APU_STEREO >> 1;
779 		pan = -pan;
780 	}
781 
782 	wc_wrchctl(ess, apuch, ch->wcreg_tpl);
783 	if (nch > 1)
784 		wc_wrchctl(ess, apuch + 1, ch->wcreg_tpl);
785 
786 	wp_wrapu(ess, apuch, APUREG_APUTYPE,
787 	    (ch->aputype << APU_APUTYPE_SHIFT) | APU_DMA_ENABLED | 0xf);
788 	if (ch->wcreg_tpl & WAVCACHE_CHCTL_STEREO)
789 		wp_wrapu(ess, apuch + 1, APUREG_APUTYPE,
790 		    (ch->aputype << APU_APUTYPE_SHIFT) | APU_DMA_ENABLED | 0xf);
791 
792 	return 0;
793 }
794 
795 
796 int
797 esm_trigger_input(void *sc, void *start, void *end, int blksize,
798     void (*intr)(void *), void *arg, struct audio_params *param)
799 {
800 	return 0;
801 }
802 
803 
804 int
805 esm_halt_output(void *sc)
806 {
807 	struct esm_softc *ess = sc;
808 	struct esm_chinfo *ch = &ess->pch;
809 
810 	DPRINTF(ESM_DEBUG_PARAM, ("esm_halt_output(%p)\n", sc));
811 
812 	wp_wrapu(ess, (ch->num << 1), APUREG_APUTYPE,
813 	    APUTYPE_INACTIVE << APU_APUTYPE_SHIFT);
814 	wp_wrapu(ess, (ch->num << 1) + 1, APUREG_APUTYPE,
815 	    APUTYPE_INACTIVE << APU_APUTYPE_SHIFT);
816 
817 	ess->pactive = 0;
818 	if (!ess->ractive)
819 		wp_stoptimer(ess);
820 
821 	return 0;
822 }
823 
824 
825 int
826 esm_halt_input(void *sc)
827 {
828 	return 0;
829 }
830 
831 
832 static inline u_int
833 calc_timer_freq(struct esm_chinfo *ch)
834 {
835 	u_int freq;
836 
837 	freq = (ch->sample_rate + ch->apublk - 1) / ch->apublk;
838 
839 	DPRINTF(ESM_DEBUG_TIMER,
840 	    ("calc_timer_freq(%p): rate = %u, blk = 0x%x (0x%x): freq = %u\n",
841 	    ch, ch->sample_rate, ch->apublk, ch->blocksize, freq));
842 
843 	return freq;
844 }
845 
846 static void
847 set_timer(struct esm_softc *ess)
848 {
849 	unsigned freq = 0, freq2;
850 
851 	if (ess->pactive)
852 		freq = calc_timer_freq(&ess->pch);
853 
854 	if (ess->ractive) {
855 		freq2 = calc_timer_freq(&ess->rch);
856 		if (freq2 < freq)
857 			freq = freq2;
858 	}
859 
860 	for (; freq < MAESTRO_MINFREQ; freq <<= 1)
861 		;
862 
863 	if (freq > 0)
864 		wp_settimer(ess, freq);
865 }
866 
867 
868 static void
869 esmch_set_format(struct esm_chinfo *ch, struct audio_params *p)
870 {
871 	u_int16_t wcreg_tpl = (ch->base - 16) & WAVCACHE_CHCTL_ADDRTAG_MASK;
872 	u_int16_t aputype = APUTYPE_16BITLINEAR;
873 
874 	if (p->channels == 2) {
875 		wcreg_tpl |= WAVCACHE_CHCTL_STEREO;
876 		aputype++;
877 	}
878 	if (p->precision * p->factor == 8) {
879 		aputype += 2;
880 		if (p->encoding == AUDIO_ENCODING_ULINEAR)
881 			wcreg_tpl |= WAVCACHE_CHCTL_U8;
882 	}
883 	ch->wcreg_tpl = wcreg_tpl;
884 	ch->aputype = aputype;
885 	ch->sample_rate = p->sample_rate;
886 
887 	DPRINTF(ESM_DEBUG_PARAM, ("esmch_set_format: "
888 	    "numch=%d, prec=%d*%d, tpl=0x%x, aputype=%d, rate=%ld\n",
889 	    p->channels, p->precision, p->factor, wcreg_tpl, aputype,
890 	    p->sample_rate));
891 }
892 
893 
894 /*
895  * Audio interface glue functions
896  */
897 
898 int
899 esm_open(void *sc, int flags)
900 {
901 	DPRINTF(ESM_DEBUG_PARAM, ("esm_open(%p, 0x%x)\n", sc, flags));
902 
903 	return 0;
904 }
905 
906 
907 void
908 esm_close(void *sc)
909 {
910 	DPRINTF(ESM_DEBUG_PARAM, ("esm_close(%p)\n", sc));
911 }
912 
913 
914 int
915 esm_getdev (void *sc, struct audio_device *adp)
916 {
917 	*adp = esm_device;
918 	return 0;
919 }
920 
921 
922 int
923 esm_round_blocksize (void *sc, int blk)
924 {
925 	DPRINTF(ESM_DEBUG_PARAM,
926 	    ("esm_round_blocksize(%p, 0x%x)", sc, blk));
927 
928 	blk &= ~0x3f;		/* keep good alignment */
929 
930 	DPRINTF(ESM_DEBUG_PARAM, (" = 0x%x\n", blk));
931 
932 	return blk;
933 }
934 
935 
936 int
937 esm_query_encoding(void *sc, struct audio_encoding *fp)
938 {
939 	DPRINTF(ESM_DEBUG_PARAM,
940 	    ("esm_query_encoding(%p, %d)\n", sc, fp->index));
941 
942 	if (fp->index < 0 || fp->index >= MAESTRO_NENCODINGS)
943 		return EINVAL;
944 
945 	*fp = esm_encoding[fp->index];
946 	return 0;
947 }
948 
949 
950 int
951 esm_set_params(void *sc, int setmode, int usemode,
952 	struct audio_params *play, struct audio_params *rec)
953 {
954 	struct esm_softc *ess = sc;
955 	struct audio_params *p;
956 	int mode;
957 
958 	DPRINTF(ESM_DEBUG_PARAM,
959 	    ("esm_set_params(%p, 0x%x, 0x%x, %p, %p)\n",
960 	    sc, setmode, usemode, play, rec));
961 
962 	for (mode = AUMODE_RECORD; mode != -1;
963 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
964 		if ((setmode & mode) == 0)
965 			continue;
966 
967 		p = mode == AUMODE_PLAY ? play : rec;
968 
969 		if (p->sample_rate < 4000 || p->sample_rate > 48000 ||
970 		    (p->precision != 8 && p->precision != 16) ||
971 		    (p->channels != 1 && p->channels != 2))
972 			return EINVAL;
973 
974 		p->factor = 1;
975 		p->sw_code = 0;
976 		switch (p->encoding) {
977 		case AUDIO_ENCODING_SLINEAR_BE:
978 			if (p->precision == 16)
979 				p->sw_code = swap_bytes;
980 			else
981 				p->sw_code = change_sign8;
982 			break;
983 		case AUDIO_ENCODING_SLINEAR_LE:
984 			if (p->precision != 16)
985 				p->sw_code = change_sign8;
986 			break;
987 		case AUDIO_ENCODING_ULINEAR_BE:
988 			if (p->precision == 16) {
989 				if (mode == AUMODE_PLAY)
990 					p->sw_code = swap_bytes_change_sign16_le;
991 				else
992 					p->sw_code = change_sign16_swap_bytes_le;
993 			}
994 			break;
995 		case AUDIO_ENCODING_ULINEAR_LE:
996 			if (p->precision == 16)
997 				p->sw_code = change_sign16_le;
998 			break;
999 		case AUDIO_ENCODING_ULAW:
1000 			if (mode == AUMODE_PLAY) {
1001 				p->factor = 2;
1002 				p->sw_code = mulaw_to_slinear16_le;
1003 			} else
1004 				p->sw_code = ulinear8_to_mulaw;
1005 			break;
1006 		case AUDIO_ENCODING_ALAW:
1007 			if (mode == AUMODE_PLAY) {
1008 				p->factor = 2;
1009 				p->sw_code = alaw_to_slinear16_le;
1010 			} else
1011 				p->sw_code = ulinear8_to_alaw;
1012 			break;
1013 		default:
1014 			return EINVAL;
1015 		}
1016 	}
1017 
1018 	if (setmode & AUMODE_PLAY)
1019 		esmch_set_format(&ess->pch, play);
1020 
1021 	if (setmode & AUMODE_RECORD)
1022 		esmch_set_format(&ess->rch, rec);
1023 
1024 	return 0;
1025 }
1026 
1027 
1028 int
1029 esm_set_port(void *sc, mixer_ctrl_t *cp)
1030 {
1031 	struct esm_softc *ess = sc;
1032 
1033 	return (ess->codec_if->vtbl->mixer_set_port(ess->codec_if, cp));
1034 }
1035 
1036 
1037 int
1038 esm_get_port(void *sc, mixer_ctrl_t *cp)
1039 {
1040 	struct esm_softc *ess = sc;
1041 
1042 	return (ess->codec_if->vtbl->mixer_get_port(ess->codec_if, cp));
1043 }
1044 
1045 
1046 int
1047 esm_query_devinfo(void *sc, mixer_devinfo_t *dip)
1048 {
1049 	struct esm_softc *ess = sc;
1050 
1051 	return (ess->codec_if->vtbl->query_devinfo(ess->codec_if, dip));
1052 }
1053 
1054 
1055 void *
1056 esm_malloc(void *sc, int direction, size_t size, int pool, int flags)
1057 {
1058 	struct esm_softc *ess = sc;
1059 	struct esm_dma *p;
1060 	int error;
1061 
1062 	DPRINTF(ESM_DEBUG_DMA,
1063 	    ("esm_malloc(%p, %d, 0x%x, 0x%x, 0x%x)",
1064 	    sc, direction, size, pool, flags));
1065 
1066 	p = malloc(sizeof(*p), pool, flags);
1067 	if (!p)
1068 		return 0;
1069 	error = esm_allocmem(ess, size, 16, p);
1070 	if (error) {
1071 		free(p, pool);
1072 		DPRINTF(ESM_DEBUG_DMA, (" = 0 (ENOMEM)\n"));
1073 		return 0;
1074 	}
1075 	p->next = ess->sc_dmas;
1076 	ess->sc_dmas = p;
1077 
1078 	DPRINTF(ESM_DEBUG_DMA,
1079 	    (": KERNADDR(%p) = %p (DMAADDR 0x%x)\n", p, KERNADDR(p), (int)DMAADDR(p)));
1080 
1081 	return KERNADDR(p);
1082 }
1083 
1084 
1085 void
1086 esm_free(void *sc, void *ptr, int pool)
1087 {
1088 	struct esm_softc *ess = sc;
1089 	struct esm_dma *p, **pp;
1090 
1091 	DPRINTF(ESM_DEBUG_DMA,
1092 	    ("esm_free(%p, %p, 0x%x)\n",
1093 	    sc, ptr, pool));
1094 
1095 	for (pp = &ess->sc_dmas; (p = *pp) != NULL; pp = &p->next) {
1096 		if (KERNADDR(p) == ptr) {
1097 			esm_freemem(ess, p);
1098 			*pp = p->next;
1099 			free(p, pool);
1100 			return;
1101 		}
1102 	}
1103 }
1104 
1105 
1106 size_t
1107 esm_round_buffersize(void *sc, int direction, size_t size)
1108 {
1109 	return size;
1110 }
1111 
1112 
1113 paddr_t
1114 esm_mappage(void *sc, void *mem, off_t off, int prot)
1115 {
1116 	struct esm_softc *ess = sc;
1117 	struct esm_dma *p;
1118 
1119 	DPRINTF(ESM_DEBUG_DMA,
1120 	    ("esm_mappage(%p, %p, 0x%lx, 0x%x)\n",
1121 	    sc, mem, (unsigned long)off, prot));
1122 
1123 	if (off < 0)
1124 		return (-1);
1125 
1126 	for (p = ess->sc_dmas; p && KERNADDR(p) != mem; p = p->next)
1127 		;
1128 	if (!p)
1129 		return (-1);
1130 	return bus_dmamem_mmap(ess->dmat, p->segs, p->nsegs, off,
1131 	    prot, BUS_DMA_WAITOK);
1132 }
1133 
1134 
1135 int
1136 esm_get_props(void *sc)
1137 {
1138 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
1139 }
1140 
1141 
1142 /* -----------------------------
1143  * Bus space.
1144  */
1145 
1146 int
1147 esm_intr(void *sc)
1148 {
1149 	struct esm_softc *ess = sc;
1150 	u_int16_t status;
1151 	u_int16_t pos;
1152 	int ret = 0;
1153 
1154 	status = bus_space_read_1(ess->st, ess->sh, PORT_HOSTINT_STAT);
1155 	if (!status)
1156 		return 0;
1157 
1158 	/* Acknowledge all. */
1159 	bus_space_write_2(ess->st, ess->sh, PORT_INT_STAT, 1);
1160 	bus_space_write_1(ess->st, ess->sh, PORT_HOSTINT_STAT, 0);
1161 #if 0	/* XXX - HWVOL */
1162 	if (status & HOSTINT_STAT_HWVOL) {
1163 		u_int delta;
1164 		delta = bus_space_read_1(ess->st, ess->sh, PORT_HWVOL_MASTER)
1165 		    - 0x88;
1166 		if (delta & 0x11)
1167 			mixer_set(device_get_softc(ess->dev),
1168 			    SOUND_MIXER_VOLUME, 0);
1169 		else {
1170 			mixer_set(device_get_softc(ess->dev),
1171 			    SOUND_MIXER_VOLUME,
1172 			    mixer_get(device_get_softc(ess->dev),
1173 				SOUND_MIXER_VOLUME)
1174 			    + ((delta >> 5) & 0x7) - 4
1175 			    + ((delta << 7) & 0x700) - 0x400);
1176 		}
1177 		bus_space_write_1(ess->st, ess->sh, PORT_HWVOL_MASTER, 0x88);
1178 		ret++;
1179 	}
1180 #endif	/* XXX - HWVOL */
1181 
1182 	if (ess->pactive) {
1183 		pos = wp_rdapu(ess, ess->pch.num << 1, APUREG_CURPTR);
1184 
1185 		DPRINTF(ESM_DEBUG_IRQ, (" %4.4x/%4.4x ", pos,
1186 		    wp_rdapu(ess, (ess->pch.num<<1)+1, APUREG_CURPTR)));
1187 
1188 		if (pos >= ess->pch.nextirq &&
1189 		    pos - ess->pch.nextirq < ess->pch.apubuf / 2) {
1190 			ess->pch.nextirq += ess->pch.apublk;
1191 
1192 			if (ess->pch.nextirq >= ess->pch.apubuf)
1193 				ess->pch.nextirq = 0;
1194 
1195 			if (ess->sc_pintr) {
1196 				DPRINTF(ESM_DEBUG_IRQ, ("P\n"));
1197 				ess->sc_pintr(ess->sc_parg);
1198 			}
1199 
1200 		}
1201 		ret++;
1202 	}
1203 
1204 	if (ess->ractive) {
1205 		pos = wp_rdapu(ess, ess->rch.num << 1, APUREG_CURPTR);
1206 
1207 		DPRINTF(ESM_DEBUG_IRQ, (" %4.4x/%4.4x ", pos,
1208 		    wp_rdapu(ess, (ess->rch.num<<1)+1, APUREG_CURPTR)));
1209 
1210 		if (pos >= ess->rch.nextirq &&
1211 		    pos - ess->rch.nextirq < ess->rch.apubuf / 2) {
1212 			ess->rch.nextirq += ess->rch.apublk;
1213 
1214 			if (ess->rch.nextirq >= ess->rch.apubuf)
1215 				ess->rch.nextirq = 0;
1216 
1217 			if (ess->sc_rintr) {
1218 				DPRINTF(ESM_DEBUG_IRQ, ("R\n"));
1219 				ess->sc_rintr(ess->sc_parg);
1220 			}
1221 
1222 		}
1223 		ret++;
1224 	}
1225 
1226 	return ret;
1227 }
1228 
1229 
1230 int
1231 esm_allocmem(struct esm_softc *sc, size_t size, size_t align,
1232     struct esm_dma *p)
1233 {
1234 	int error;
1235 
1236 	p->size = size;
1237 	error = bus_dmamem_alloc(sc->dmat, p->size, align, 0,
1238 				 p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
1239 				 &p->nsegs, BUS_DMA_NOWAIT);
1240 	if (error)
1241 		return error;
1242 
1243 	error = bus_dmamem_map(sc->dmat, p->segs, p->nsegs, p->size,
1244 			       &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
1245 	if (error)
1246 		goto free;
1247 
1248 	error = bus_dmamap_create(sc->dmat, p->size, 1, p->size,
1249 				  0, BUS_DMA_NOWAIT, &p->map);
1250 	if (error)
1251 		goto unmap;
1252 
1253 	error = bus_dmamap_load(sc->dmat, p->map, p->addr, p->size, NULL,
1254 				BUS_DMA_NOWAIT);
1255 	if (error)
1256 		goto destroy;
1257 
1258 	return 0;
1259 
1260  destroy:
1261 	bus_dmamap_destroy(sc->dmat, p->map);
1262  unmap:
1263 	bus_dmamem_unmap(sc->dmat, p->addr, p->size);
1264  free:
1265 	bus_dmamem_free(sc->dmat, p->segs, p->nsegs);
1266 
1267 	return error;
1268 }
1269 
1270 
1271 int
1272 esm_freemem(struct esm_softc *sc, struct esm_dma *p)
1273 {
1274 	bus_dmamap_unload(sc->dmat, p->map);
1275 	bus_dmamap_destroy(sc->dmat, p->map);
1276 	bus_dmamem_unmap(sc->dmat, p->addr, p->size);
1277 	bus_dmamem_free(sc->dmat, p->segs, p->nsegs);
1278 	return 0;
1279 }
1280 
1281 
1282 int
1283 esm_match(struct device *dev, struct cfdata *match, void *aux)
1284 {
1285 	struct pci_attach_args *pa = (struct pci_attach_args *) aux;
1286 
1287 	switch (PCI_VENDOR(pa->pa_id)) {
1288 	case PCI_VENDOR_ESSTECH:
1289 		switch (PCI_PRODUCT(pa->pa_id)) {
1290 		case PCI_PRODUCT_ESSTECH_MAESTRO1:
1291 		case PCI_PRODUCT_ESSTECH_MAESTRO2:
1292 		case PCI_PRODUCT_ESSTECH_MAESTRO2E:
1293 			return 1;
1294 		}
1295 
1296 	case PCI_VENDOR_ESSTECH2:
1297 		switch (PCI_PRODUCT(pa->pa_id)) {
1298 		case PCI_PRODUCT_ESSTECH2_MAESTRO1:
1299 			return 1;
1300 		}
1301 	}
1302 	return 0;
1303 }
1304 
1305 void
1306 esm_attach(struct device *parent, struct device *self, void *aux)
1307 {
1308 	struct esm_softc *ess = (struct esm_softc *)self;
1309 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
1310 	pci_chipset_tag_t pc = pa->pa_pc;
1311 	pcitag_t tag = pa->pa_tag;
1312 	pci_intr_handle_t ih;
1313 	pcireg_t csr, data;
1314 	u_int16_t codec_data;
1315 	const char *intrstr;
1316 	int revision;
1317 	char devinfo[256];
1318 
1319 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
1320 	revision = PCI_REVISION(pa->pa_class);
1321 	printf(": %s (rev. 0x%02x)\n", devinfo, revision);
1322 
1323 	/* Enable the device. */
1324 	csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
1325 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
1326 	    csr | PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE);
1327 
1328 	/* Map I/O register */
1329 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
1330 	    &ess->st, &ess->sh, NULL, NULL)) {
1331 		printf("%s: can't map i/o space\n", ess->sc_dev.dv_xname);
1332 		return;
1333 	}
1334 
1335 	/* Initialize softc */
1336 	ess->pch.num = 0;
1337 	ess->rch.num = 2;
1338 	ess->dmat = pa->pa_dmat;
1339 	ess->tag = tag;
1340 	ess->pc = pc;
1341 	ess->subid = pci_conf_read(pc, tag, PCI_SUBSYS_ID_REG);
1342 
1343 	DPRINTF(ESM_DEBUG_PCI,
1344 	    ("%s: sub-system vendor 0x%4.4x, product 0x%4.4x\n",
1345 	    ess->sc_dev.dv_xname,
1346 	    PCI_VENDOR(ess->subid), PCI_PRODUCT(ess->subid)));
1347 
1348 	/* Map and establish the interrupt. */
1349 	if (pci_intr_map(pa, &ih)) {
1350 		printf("%s: can't map interrupt\n", ess->sc_dev.dv_xname);
1351 		return;
1352 	}
1353 	intrstr = pci_intr_string(pc, ih);
1354 	ess->ih = pci_intr_establish(pc, ih, IPL_AUDIO, esm_intr, self);
1355 	if (ess->ih == NULL) {
1356 		printf("%s: can't establish interrupt", ess->sc_dev.dv_xname);
1357 		if (intrstr != NULL)
1358 			printf(" at %s", intrstr);
1359 		printf("\n");
1360 		return;
1361 	}
1362 	printf("%s: interrupting at %s\n", ess->sc_dev.dv_xname, intrstr);
1363 
1364 	/*
1365 	 * Setup PCI config registers
1366 	 */
1367 
1368 	/* set to power state D0 */
1369 	esm_power(ess, PCI_PMCSR_STATE_D0);
1370 	delay(100000);
1371 
1372 	/* Disable all legacy emulations. */
1373 	data = pci_conf_read(pc, tag, CONF_LEGACY);
1374 	pci_conf_write(pc, tag, CONF_LEGACY, data | LEGACY_DISABLED);
1375 
1376 	/* Disconnect from CHI. (Makes Dell inspiron 7500 work?)
1377 	 * Enable posted write.
1378 	 * Prefer PCI timing rather than that of ISA.
1379 	 * Don't swap L/R. */
1380 	data = pci_conf_read(pc, tag, CONF_MAESTRO);
1381 	data |= MAESTRO_CHIBUS | MAESTRO_POSTEDWRITE | MAESTRO_DMA_PCITIMING;
1382 	data &= ~MAESTRO_SWAP_LR;
1383 	pci_conf_write(pc, tag, CONF_MAESTRO, data);
1384 
1385 	/* initialize sound chip */
1386 	esm_init(ess);
1387 
1388 	esm_read_codec(ess, 0, &codec_data);
1389 	if (codec_data == 0x80) {
1390 		printf("%s: PT101 codec detected!\n", ess->sc_dev.dv_xname);
1391 		return;
1392 	}
1393 
1394 	/*
1395 	 * Some cards and Notebooks appear to have left and right channels
1396 	 * reversed.  Check if there is a corresponding quirk entry for
1397 	 * the subsystem vendor and product and if so, set the appropriate
1398 	 * codec flag.
1399 	 */
1400 	if (esm_get_quirks(ess->subid) & ESM_QUIRKF_SWAPPEDCH) {
1401 		ess->codec_flags |= AC97_HOST_SWAPPED_CHANNELS;
1402 	}
1403 	ess->codec_flags |= AC97_HOST_DONT_READ;
1404 
1405 	/* initialize AC97 host interface */
1406 	ess->host_if.arg = self;
1407 	ess->host_if.attach = esm_attach_codec;
1408 	ess->host_if.read = esm_read_codec;
1409 	ess->host_if.write = esm_write_codec;
1410 	ess->host_if.reset = esm_reset_codec;
1411 	ess->host_if.flags = esm_flags_codec;
1412 
1413 	if (ac97_attach(&ess->host_if) != 0)
1414 		return;
1415 
1416 	audio_attach_mi(&esm_hw_if, self, &ess->sc_dev);
1417 
1418 	ess->esm_suspend = PWR_RESUME;
1419 	ess->esm_powerhook = powerhook_establish(esm_powerhook, ess);
1420 }
1421 
1422 /* Power Hook */
1423 void
1424 esm_powerhook(why, v)
1425 	int why;
1426 	void *v;
1427 {
1428 	struct esm_softc *ess = (struct esm_softc *)v;
1429 
1430 	DPRINTF(ESM_DEBUG_PARAM,
1431 	("%s: ESS maestro 2E why=%d\n", ess->sc_dev.dv_xname, why));
1432 	switch (why) {
1433 		case PWR_SUSPEND:
1434 		case PWR_STANDBY:
1435 			ess->esm_suspend = why;
1436 			esm_suspend(ess);
1437 			DPRINTF(ESM_DEBUG_RESUME, ("esm_suspend\n"));
1438 			break;
1439 
1440 		case PWR_RESUME:
1441 			ess->esm_suspend = why;
1442 			esm_resume(ess);
1443 			DPRINTF(ESM_DEBUG_RESUME, ("esm_resumed\n"));
1444 			break;
1445 	}
1446 }
1447 
1448 int
1449 esm_suspend(struct esm_softc *ess)
1450 {
1451 	int x;
1452 
1453 	x = splaudio();
1454 	wp_stoptimer(ess);
1455 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL, 0);
1456 
1457 	esm_halt_output(ess);
1458 	esm_halt_input(ess);
1459 	splx(x);
1460 
1461 	/* Power down everything except clock. */
1462 	esm_write_codec(ess, AC97_REG_POWER, 0xdf00);
1463 	delay(20);
1464 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, 0);
1465 	delay(1);
1466 	esm_power(ess, PCI_PMCSR_STATE_D3);
1467 
1468 	return 0;
1469 }
1470 
1471 int
1472 esm_resume(struct esm_softc *ess)
1473 {
1474 	int x;
1475 
1476 	esm_power(ess, PCI_PMCSR_STATE_D0);
1477 	delay(100000);
1478 	esm_init(ess);
1479 
1480 	(*ess->codec_if->vtbl->restore_ports)(ess->codec_if);
1481 #if 0
1482 	if (mixer_reinit(dev)) {
1483 		printf("%s: unable to reinitialize the mixer\n",
1484 		    ess->sc_dev.dv_xname);
1485 		return ENXIO;
1486 	}
1487 #endif
1488 
1489 	x = splaudio();
1490 #if TODO
1491 	if (ess->pactive)
1492 		esm_start_output(ess);
1493 	if (ess->ractive)
1494 		esm_start_input(ess);
1495 #endif
1496 	if (ess->pactive || ess->ractive) {
1497 		set_timer(ess);
1498 		wp_starttimer(ess);
1499 	}
1500 	splx(x);
1501 	return 0;
1502 }
1503 
1504 #if 0
1505 int
1506 esm_shutdown(struct esm_softc *ess)
1507 {
1508 	int i;
1509 
1510 	wp_stoptimer(ess);
1511 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL, 0);
1512 
1513 	esm_halt_output(ess);
1514 	esm_halt_input(ess);
1515 
1516 	return 0;
1517 }
1518 #endif
1519