xref: /netbsd/sys/dev/pci/esm.c (revision c4a72b64)
1 /*      $NetBSD: esm.c,v 1.16 2002/10/02 16:51:13 thorpej 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 1.16 2002/10/02 16:51:13 thorpej 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 CFATTACH_DECL(esm, sizeof(struct esm_softc),
148     esm_match, esm_attach, NULL, NULL);
149 
150 struct audio_hw_if esm_hw_if = {
151 	esm_open,
152 	esm_close,
153 	NULL,				/* drain */
154 	esm_query_encoding,
155 	esm_set_params,
156 	esm_round_blocksize,
157 	NULL,				/* commit_settings */
158 	esm_init_output,
159 	NULL,				/* init_input */
160 	NULL,				/* start_output */
161 	NULL,				/* start_input */
162 	esm_halt_output,
163 	esm_halt_input,
164 	NULL,				/* speaker_ctl */
165 	esm_getdev,
166 	NULL,				/* getfd */
167 	esm_set_port,
168 	esm_get_port,
169 	esm_query_devinfo,
170 	esm_malloc,
171 	esm_free,
172 	esm_round_buffersize,
173 	esm_mappage,
174 	esm_get_props,
175 	esm_trigger_output,
176 	esm_trigger_input,
177 	NULL,
178 };
179 
180 struct audio_device esm_device = {
181 	"ESS Maestro",
182 	"",
183 	"esm"
184 };
185 
186 
187 static audio_encoding_t esm_encoding[] = {
188 	{ 0, AudioEulinear, AUDIO_ENCODING_ULINEAR, 8, 0 },
189 	{ 1, AudioEmulaw, AUDIO_ENCODING_ULAW, 8,
190 		AUDIO_ENCODINGFLAG_EMULATED },
191 	{ 2, AudioEalaw, AUDIO_ENCODING_ALAW, 8, AUDIO_ENCODINGFLAG_EMULATED },
192 	{ 3, AudioEslinear, AUDIO_ENCODING_SLINEAR, 8, 0 },
193 	{ 4, AudioEslinear_le, AUDIO_ENCODING_SLINEAR_LE, 16, 0 },
194 	{ 5, AudioEulinear_le, AUDIO_ENCODING_ULINEAR_LE, 16,
195 		AUDIO_ENCODINGFLAG_EMULATED },
196 	{ 6, AudioEslinear_be, AUDIO_ENCODING_SLINEAR_BE, 16,
197 		AUDIO_ENCODINGFLAG_EMULATED },
198 	{ 7, AudioEulinear_be, AUDIO_ENCODING_ULINEAR_BE, 16,
199 		AUDIO_ENCODINGFLAG_EMULATED },
200 };
201 
202 #define MAESTRO_NENCODINGS 8
203 
204 
205 static const struct esm_quirks esm_quirks[] = {
206 	/* COMPAL 38W2 OEM Notebook, e.g. Dell INSPIRON 5000e */
207 	{ PCI_VENDOR_COMPAL, PCI_PRODUCT_COMPAL_38W2, ESM_QUIRKF_SWAPPEDCH },
208 
209 	/* COMPAQ Armada M700 Notebook */
210 	{ PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_M700, ESM_QUIRKF_SWAPPEDCH },
211 
212 	/* NEC Versa Pro LX VA26D */
213 	{ PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VA26D, ESM_QUIRKF_GPIO },
214 
215 	/* NEC Versa LX */
216 	{ PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VERSALX, ESM_QUIRKF_GPIO },
217 
218 	/* Toshiba Portege */
219 	{ PCI_VENDOR_TOSHIBA2, PCI_PRODUCT_TOSHIBA2_PORTEGE, ESM_QUIRKF_SWAPPEDCH }
220 };
221 
222 enum esm_quirk_flags
223 esm_get_quirks(pcireg_t subid)
224 {
225 	int i;
226 
227 	for (i = 0; i < (sizeof esm_quirks / sizeof esm_quirks[0]); i++) {
228 		if (PCI_VENDOR(subid) == esm_quirks[i].eq_vendor &&
229 		    PCI_PRODUCT(subid) == esm_quirks[i].eq_product) {
230 			return esm_quirks[i].eq_quirks;
231 		}
232 	}
233 
234 	return 0;
235 }
236 
237 
238 #ifdef AUDIO_DEBUG
239 struct esm_reg_info {
240 	int	offset;			/* register offset */
241 	int	width;			/* 1/2/4 bytes */
242 } dump_regs[] = {
243 	{ PORT_WAVCACHE_CTRL,		2 },
244 	{ PORT_HOSTINT_CTRL,		2 },
245 	{ PORT_HOSTINT_STAT,		2 },
246 	{ PORT_HWVOL_VOICE_SHADOW,	1 },
247 	{ PORT_HWVOL_VOICE,		1 },
248 	{ PORT_HWVOL_MASTER_SHADOW,	1 },
249 	{ PORT_HWVOL_MASTER,		1 },
250 	{ PORT_RINGBUS_CTRL,		4 },
251 	{ PORT_GPIO_DATA,		2 },
252 	{ PORT_GPIO_MASK,		2 },
253 	{ PORT_GPIO_DIR,		2 },
254 	{ PORT_ASSP_CTRL_A,		1 },
255 	{ PORT_ASSP_CTRL_B,		1 },
256 	{ PORT_ASSP_CTRL_C,		1 },
257 	{ PORT_ASSP_INT_STAT,		1 }
258 };
259 
260 static void
261 esm_dump_regs(struct esm_softc *ess)
262 {
263 	int i;
264 
265 	printf("%s registers:", ess->sc_dev.dv_xname);
266 	for (i = 0; i < (sizeof dump_regs / sizeof dump_regs[0]); i++) {
267 		if (i % 5 == 0)
268 			printf("\n");
269 		printf("0x%2.2x: ", dump_regs[i].offset);
270 		switch(dump_regs[i].width) {
271 		case 4:
272 			printf("%8.8x, ", bus_space_read_4(ess->st, ess->sh,
273 			    dump_regs[i].offset));
274 			break;
275 		case 2:
276 			printf("%4.4x,     ", bus_space_read_2(ess->st, ess->sh,
277 			    dump_regs[i].offset));
278 			break;
279 		default:
280 			printf("%2.2x,       ",
281 			    bus_space_read_1(ess->st, ess->sh,
282 			    dump_regs[i].offset));
283 		}
284 	}
285 	printf("\n");
286 }
287 #endif
288 
289 
290 /* -----------------------------
291  * Subsystems.
292  */
293 
294 /* Codec/Ringbus */
295 
296 /* -------------------------------------------------------------------- */
297 
298 int
299 esm_read_codec(void *sc, u_int8_t regno, u_int16_t *result)
300 {
301 	struct esm_softc *ess = sc;
302 	unsigned t;
303 
304 	/* We have to wait for a SAFE time to write addr/data */
305 	for (t = 0; t < 20; t++) {
306 		if ((bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
307 		    & CODEC_STAT_MASK) != CODEC_STAT_PROGLESS)
308 			break;
309 		delay(2);	/* 20.8us / 13 */
310 	}
311 	if (t == 20)
312 		printf("%s: esm_read_codec() PROGLESS timed out.\n",
313 		    ess->sc_dev.dv_xname);
314 
315 	bus_space_write_1(ess->st, ess->sh, PORT_CODEC_CMD,
316 	    CODEC_CMD_READ | regno);
317 	delay(21);	/* AC97 cycle = 20.8usec */
318 
319 	/* Wait for data retrieve */
320 	for (t = 0; t < 20; t++) {
321 		if ((bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
322 		    & CODEC_STAT_MASK) == CODEC_STAT_RW_DONE)
323 			break;
324 		delay(2);	/* 20.8us / 13 */
325 	}
326 	if (t == 20)
327 		/* Timed out, but perform dummy read. */
328 		printf("%s: esm_read_codec() RW_DONE timed out.\n",
329 		    ess->sc_dev.dv_xname);
330 
331 	*result = bus_space_read_2(ess->st, ess->sh, PORT_CODEC_REG);
332 
333 	return 0;
334 }
335 
336 int
337 esm_write_codec(void *sc, u_int8_t regno, u_int16_t data)
338 {
339 	struct esm_softc *ess = sc;
340 	unsigned t;
341 
342 	/* We have to wait for a SAFE time to write addr/data */
343 	for (t = 0; t < 20; t++) {
344 		if ((bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
345 		    & CODEC_STAT_MASK) != CODEC_STAT_PROGLESS)
346 			break;
347 		delay(2);	/* 20.8us / 13 */
348 	}
349 	if (t == 20) {
350 		/* Timed out. Abort writing. */
351 		printf("%s: esm_write_codec() PROGLESS timed out.\n",
352 		    ess->sc_dev.dv_xname);
353 		return -1;
354 	}
355 
356 	bus_space_write_2(ess->st, ess->sh, PORT_CODEC_REG, data);
357 	bus_space_write_1(ess->st, ess->sh, PORT_CODEC_CMD,
358 	    CODEC_CMD_WRITE | regno);
359 
360 	return 0;
361 }
362 
363 /* -------------------------------------------------------------------- */
364 
365 static inline void
366 ringbus_setdest(struct esm_softc *ess, int src, int dest)
367 {
368 	u_int32_t data;
369 
370 	data = bus_space_read_4(ess->st, ess->sh, PORT_RINGBUS_CTRL);
371 	data &= ~(0xfU << src);
372 	data |= (0xfU & dest) << src;
373 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, data);
374 }
375 
376 /* Wave Processor */
377 
378 static inline u_int16_t
379 wp_rdreg(struct esm_softc *ess, u_int16_t reg)
380 {
381 	bus_space_write_2(ess->st, ess->sh, PORT_DSP_INDEX, reg);
382 	return bus_space_read_2(ess->st, ess->sh, PORT_DSP_DATA);
383 }
384 
385 static inline void
386 wp_wrreg(struct esm_softc *ess, u_int16_t reg, u_int16_t data)
387 {
388 	bus_space_write_2(ess->st, ess->sh, PORT_DSP_INDEX, reg);
389 	bus_space_write_2(ess->st, ess->sh, PORT_DSP_DATA, data);
390 }
391 
392 static inline void
393 apu_setindex(struct esm_softc *ess, u_int16_t reg)
394 {
395 	int t;
396 
397 	wp_wrreg(ess, WPREG_CRAM_PTR, reg);
398 	/* Sometimes WP fails to set apu register index. */
399 	for (t = 0; t < 1000; t++) {
400 		if (bus_space_read_2(ess->st, ess->sh, PORT_DSP_DATA) == reg)
401 			break;
402 		bus_space_write_2(ess->st, ess->sh, PORT_DSP_DATA, reg);
403 	}
404 	if (t == 1000)
405 		printf("%s: apu_setindex() timed out.\n", ess->sc_dev.dv_xname);
406 }
407 
408 static inline u_int16_t
409 wp_rdapu(struct esm_softc *ess, int ch, u_int16_t reg)
410 {
411 	u_int16_t ret;
412 
413 	apu_setindex(ess, ((unsigned)ch << 4) + reg);
414 	ret = wp_rdreg(ess, WPREG_DATA_PORT);
415 	return ret;
416 }
417 
418 static inline void
419 wp_wrapu(struct esm_softc *ess, int ch, u_int16_t reg, u_int16_t data)
420 {
421 	int t;
422 
423 	DPRINTF(ESM_DEBUG_APU,
424 	    ("wp_wrapu(%p, ch=%d, reg=0x%x, data=0x%04x)\n",
425 	    ess, ch, reg, data));
426 
427 	apu_setindex(ess, ((unsigned)ch << 4) + reg);
428 	wp_wrreg(ess, WPREG_DATA_PORT, data);
429 	for (t = 0; t < 1000; t++) {
430 		if (bus_space_read_2(ess->st, ess->sh, PORT_DSP_DATA) == data)
431 			break;
432 		bus_space_write_2(ess->st, ess->sh, PORT_DSP_DATA, data);
433 	}
434 	if (t == 1000)
435 		printf("%s: wp_wrapu() timed out.\n", ess->sc_dev.dv_xname);
436 }
437 
438 static inline void
439 wp_settimer(struct esm_softc *ess, u_int freq)
440 {
441 	u_int clock = 48000 << 2;
442 	u_int prescale = 0, divide = (freq != 0) ? (clock / freq) : ~0;
443 
444 	RANGE(divide, WPTIMER_MINDIV, WPTIMER_MAXDIV);
445 
446 	for (; divide > 32 << 1; divide >>= 1)
447 		prescale++;
448 	divide = (divide + 1) >> 1;
449 
450 	for (; prescale < 7 && divide > 2 && !(divide & 1); divide >>= 1)
451 		prescale++;
452 
453 	DPRINTF(ESM_DEBUG_TIMER,
454 	    ("wp_settimer(%p, %u): clock = %u, prescale = %u, divide = %u\n",
455 	    ess, freq, clock, prescale, divide));
456 
457 	wp_wrreg(ess, WPREG_TIMER_ENABLE, 0);
458 	wp_wrreg(ess, WPREG_TIMER_FREQ,
459 	    (prescale << WP_TIMER_FREQ_PRESCALE_SHIFT) | (divide - 1));
460 	wp_wrreg(ess, WPREG_TIMER_ENABLE, 1);
461 }
462 
463 static inline void
464 wp_starttimer(struct esm_softc *ess)
465 {
466 	wp_wrreg(ess, WPREG_TIMER_START, 1);
467 }
468 
469 static inline void
470 wp_stoptimer(struct esm_softc *ess)
471 {
472 	wp_wrreg(ess, WPREG_TIMER_START, 0);
473 	bus_space_write_2(ess->st, ess->sh, PORT_INT_STAT, 1);
474 }
475 
476 /* WaveCache */
477 
478 static inline u_int16_t
479 wc_rdreg(struct esm_softc *ess, u_int16_t reg)
480 {
481 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_INDEX, reg);
482 	return bus_space_read_2(ess->st, ess->sh, PORT_WAVCACHE_DATA);
483 }
484 
485 static inline void
486 wc_wrreg(struct esm_softc *ess, u_int16_t reg, u_int16_t data)
487 {
488 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_INDEX, reg);
489 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_DATA, data);
490 }
491 
492 static inline u_int16_t
493 wc_rdchctl(struct esm_softc *ess, int ch)
494 {
495 	return wc_rdreg(ess, ch << 3);
496 }
497 
498 static inline void
499 wc_wrchctl(struct esm_softc *ess, int ch, u_int16_t data)
500 {
501 	wc_wrreg(ess, ch << 3, data);
502 }
503 
504 /* Power management */
505 
506 void
507 esm_power(struct esm_softc *ess, int status)
508 {
509 	pcireg_t data;
510 	int pmcapreg;
511 
512 	if (pci_get_capability(ess->pc, ess->tag, PCI_CAP_PWRMGMT,
513 	    &pmcapreg, 0)) {
514 		data = pci_conf_read(ess->pc, ess->tag, pmcapreg + 4);
515 		if ((data && PCI_PMCSR_STATE_MASK) != status)
516 			pci_conf_write(ess->pc, ess->tag, pmcapreg + 4, status);
517 	}
518 }
519 
520 
521 /* -----------------------------
522  * Controller.
523  */
524 
525 int
526 esm_attach_codec(void *sc, struct ac97_codec_if *codec_if)
527 {
528 	struct esm_softc *ess = sc;
529 
530 	ess->codec_if = codec_if;
531 
532 	return 0;
533 }
534 
535 void
536 esm_reset_codec(void *sc)
537 {
538 }
539 
540 
541 enum ac97_host_flags
542 esm_flags_codec(void *sc)
543 {
544 	struct esm_softc *ess = sc;
545 
546 	return ess->codec_flags;
547 }
548 
549 
550 void
551 esm_initcodec(struct esm_softc *ess)
552 {
553 	u_int16_t data;
554 
555 	DPRINTF(ESM_DEBUG_CODEC, ("esm_initcodec(%p)\n", ess));
556 
557 	if (bus_space_read_4(ess->st, ess->sh, PORT_RINGBUS_CTRL)
558 	    & RINGBUS_CTRL_ACLINK_ENABLED) {
559 		bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, 0);
560 		delay(104);	/* 20.8us * (4 + 1) */
561 	}
562 	/* XXX - 2nd codec should be looked at. */
563 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
564 	    RINGBUS_CTRL_AC97_SWRESET);
565 	delay(2);
566 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
567 	    RINGBUS_CTRL_ACLINK_ENABLED);
568 	delay(21);
569 
570 	esm_read_codec(ess, 0, &data);
571 	if (bus_space_read_1(ess->st, ess->sh, PORT_CODEC_STAT)
572 	    & CODEC_STAT_MASK) {
573 		bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, 0);
574 		delay(21);
575 
576 		/* Try cold reset. */
577 		printf("%s: will perform cold reset.\n", ess->sc_dev.dv_xname);
578 		data = bus_space_read_2(ess->st, ess->sh, PORT_GPIO_DIR);
579 		if (pci_conf_read(ess->pc, ess->tag, 0x58) & 1)
580 			data |= 0x10;
581 		data |= 0x009 &
582 		    ~bus_space_read_2(ess->st, ess->sh, PORT_GPIO_DATA);
583 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_MASK, 0xff6);
584 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DIR,
585 		    data | 0x009);
586 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA, 0x000);
587 		delay(2);
588 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA, 0x001);
589 		delay(1);
590 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA, 0x009);
591 		delay(500000);
592 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DIR, data);
593 		delay(84);	/* 20.8us * 4 */
594 		bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
595 		    RINGBUS_CTRL_ACLINK_ENABLED);
596 		delay(21);
597 	}
598 }
599 
600 void
601 esm_init(struct esm_softc *ess)
602 {
603 	/* Reset direct sound. */
604 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL,
605 	    HOSTINT_CTRL_DSOUND_RESET);
606 	delay(10000);
607 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL, 0);
608 	delay(10000);
609 
610 	/* Enable direct sound interruption. */
611 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL,
612 	    HOSTINT_CTRL_DSOUND_INT_ENABLED);
613 
614 	/* Setup Wave Processor. */
615 
616 	/* Enable WaveCache */
617 	wp_wrreg(ess, WPREG_WAVE_ROMRAM,
618 	    WP_WAVE_VIRTUAL_ENABLED | WP_WAVE_DRAM_ENABLED);
619 	bus_space_write_2(ess->st, ess->sh, PORT_WAVCACHE_CTRL,
620 	    WAVCACHE_ENABLED | WAVCACHE_WTSIZE_4MB);
621 
622 	/* Setup Codec/Ringbus. */
623 	esm_initcodec(ess);
624 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL,
625 	    RINGBUS_CTRL_RINGBUS_ENABLED | RINGBUS_CTRL_ACLINK_ENABLED);
626 
627 	wp_wrreg(ess, WPREG_BASE, 0x8500);	/* Parallel I/O */
628 	ringbus_setdest(ess, RINGBUS_SRC_ADC,
629 	    RINGBUS_DEST_STEREO | RINGBUS_DEST_DSOUND_IN);
630 	ringbus_setdest(ess, RINGBUS_SRC_DSOUND,
631 	    RINGBUS_DEST_STEREO | RINGBUS_DEST_DAC);
632 
633 	/* Setup ASSP. Needed for Dell Inspiron 7500? */
634 	bus_space_write_1(ess->st, ess->sh, PORT_ASSP_CTRL_B, 0x00);
635 	bus_space_write_1(ess->st, ess->sh, PORT_ASSP_CTRL_A, 0x03);
636 	bus_space_write_1(ess->st, ess->sh, PORT_ASSP_CTRL_C, 0x00);
637 
638 	/*
639 	 * Setup GPIO.
640 	 * There seems to be speciality with NEC systems.
641 	 */
642 	if (esm_get_quirks(ess->subid) & ESM_QUIRKF_GPIO) {
643 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_MASK,
644 		    0x9ff);
645 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DIR,
646 		    bus_space_read_2(ess->st, ess->sh, PORT_GPIO_DIR) |
647 			0x600);
648 		bus_space_write_2(ess->st, ess->sh, PORT_GPIO_DATA,
649 		    0x200);
650 	}
651 
652 	DUMPREG(ess);
653 }
654 
655 
656 /* Channel controller. */
657 
658 int
659 esm_init_output (void *sc, void *start, int size)
660 {
661 	struct esm_softc *ess = sc;
662 	struct esm_dma *p;
663 	u_int32_t data;
664 
665 	for (p = ess->sc_dmas; p && KERNADDR(p) != start; p = p->next)
666 		;
667 	if (!p) {
668 		printf("%s: esm_init_output: bad addr %p\n",
669 		    ess->sc_dev.dv_xname, start);
670 		return EINVAL;
671 	}
672 
673 	ess->pch.base = DMAADDR(p) & ~0xFFF;
674 
675 	DPRINTF(ESM_DEBUG_DMA, ("%s: pch.base = 0x%x\n",
676 		ess->sc_dev.dv_xname, ess->pch.base));
677 
678 	/* set DMA base address */
679 	for (data = WAVCACHE_PCMBAR; data < WAVCACHE_PCMBAR + 4; data++)
680 		wc_wrreg(ess, data, ess->pch.base >> WAVCACHE_BASEADDR_SHIFT);
681 
682 	return 0;
683 }
684 
685 
686 int
687 esm_trigger_output(void *sc, void *start, void *end, int blksize,
688     void (*intr)(void *), void *arg, struct audio_params *param)
689 {
690 	struct esm_softc *ess = sc;
691 	struct esm_chinfo *ch = &ess->pch;
692 	struct esm_dma *p;
693 	int pan = 0, choffset;
694 	int i, nch = 1;
695 	unsigned speed = ch->sample_rate, offset, wpwa, dv;
696 	size_t size;
697 	u_int16_t apuch = ch->num << 1;
698 
699 	DPRINTF(ESM_DEBUG_DMA,
700 	    ("esm_trigger_output(%p, %p, %p, 0x%x, %p, %p, %p)\n",
701 	    sc, start, end, blksize, intr, arg, param));
702 
703 #ifdef DIAGNOSTIC
704 	if (ess->pactive) {
705 		printf("%s: esm_trigger_output: already running",
706 		    ess->sc_dev.dv_xname);
707 		return EINVAL;
708 	}
709 #endif
710 
711 	ess->sc_pintr = intr;
712 	ess->sc_parg = arg;
713 	for (p = ess->sc_dmas; p && KERNADDR(p) != start; p = p->next)
714 		;
715 	if (!p) {
716 		printf("%s: esm_trigger_output: bad addr %p\n",
717 		    ess->sc_dev.dv_xname, start);
718 		return EINVAL;
719 	}
720 
721 	ess->pch.blocksize = blksize;
722 	ess->pch.apublk = blksize >> 1;
723 	ess->pactive = 1;
724 
725 	size = (size_t)(((caddr_t)end - (caddr_t)start) >> 1);
726 	choffset = DMAADDR(p) - ess->pch.base;
727 	offset = choffset >> 1;
728 	wpwa = APU_USE_SYSMEM | (offset >> 9);
729 
730 	DPRINTF(ESM_DEBUG_DMA,
731 	    ("choffs=0x%x, wpwa=0x%x, size=0x%x words\n",
732 	    choffset, wpwa, size));
733 
734 	switch (ch->aputype) {
735 	case APUTYPE_16BITSTEREO:
736 		ess->pch.apublk >>= 1;
737 		wpwa >>= 1;
738 		size >>= 1;
739 		offset >>= 1;
740 		/* FALLTHROUGH */
741 	case APUTYPE_8BITSTEREO:
742 		if (ess->codec_flags & AC97_HOST_SWAPPED_CHANNELS)
743 			pan = 8;
744 		else
745 			pan = -8;
746 		nch++;
747 		break;
748 	case APUTYPE_8BITLINEAR:
749 		ess->pch.apublk <<= 1;
750 		speed >>= 1;
751 		break;
752 	}
753 
754 	ess->pch.apubuf = size;
755 	ess->pch.nextirq = ess->pch.apublk;
756 
757 	set_timer(ess);
758 	wp_starttimer(ess);
759 
760 	dv = (((speed % 48000) << 16) + 24000) / 48000
761 	    + ((speed / 48000) << 16);
762 
763 	for (i = nch-1; i >= 0; i--) {
764 		wp_wrapu(ess, apuch + i, APUREG_WAVESPACE, wpwa & 0xff00);
765 		wp_wrapu(ess, apuch + i, APUREG_CURPTR, offset);
766 		wp_wrapu(ess, apuch + i, APUREG_ENDPTR, offset + size);
767 		wp_wrapu(ess, apuch + i, APUREG_LOOPLEN, size - 1);
768 		wp_wrapu(ess, apuch + i, APUREG_AMPLITUDE, 0xe800);
769 		wp_wrapu(ess, apuch + i, APUREG_POSITION, 0x8f00
770 		    | (RADIUS_CENTERCIRCLE << APU_RADIUS_SHIFT)
771 		    | ((PAN_FRONT + pan) << APU_PAN_SHIFT));
772 		wp_wrapu(ess, apuch + i, APUREG_FREQ_LOBYTE, APU_plus6dB
773 		    | ((dv & 0xff) << APU_FREQ_LOBYTE_SHIFT));
774 		wp_wrapu(ess, apuch + i, APUREG_FREQ_HIWORD, dv >> 8);
775 
776 		if (ch->aputype == APUTYPE_16BITSTEREO)
777 			wpwa |= APU_STEREO >> 1;
778 		pan = -pan;
779 	}
780 
781 	wc_wrchctl(ess, apuch, ch->wcreg_tpl);
782 	if (nch > 1)
783 		wc_wrchctl(ess, apuch + 1, ch->wcreg_tpl);
784 
785 	wp_wrapu(ess, apuch, APUREG_APUTYPE,
786 	    (ch->aputype << APU_APUTYPE_SHIFT) | APU_DMA_ENABLED | 0xf);
787 	if (ch->wcreg_tpl & WAVCACHE_CHCTL_STEREO)
788 		wp_wrapu(ess, apuch + 1, APUREG_APUTYPE,
789 		    (ch->aputype << APU_APUTYPE_SHIFT) | APU_DMA_ENABLED | 0xf);
790 
791 	return 0;
792 }
793 
794 
795 int
796 esm_trigger_input(void *sc, void *start, void *end, int blksize,
797     void (*intr)(void *), void *arg, struct audio_params *param)
798 {
799 	return 0;
800 }
801 
802 
803 int
804 esm_halt_output(void *sc)
805 {
806 	struct esm_softc *ess = sc;
807 	struct esm_chinfo *ch = &ess->pch;
808 
809 	DPRINTF(ESM_DEBUG_PARAM, ("esm_halt_output(%p)\n", sc));
810 
811 	wp_wrapu(ess, (ch->num << 1), APUREG_APUTYPE,
812 	    APUTYPE_INACTIVE << APU_APUTYPE_SHIFT);
813 	wp_wrapu(ess, (ch->num << 1) + 1, APUREG_APUTYPE,
814 	    APUTYPE_INACTIVE << APU_APUTYPE_SHIFT);
815 
816 	ess->pactive = 0;
817 	if (!ess->ractive)
818 		wp_stoptimer(ess);
819 
820 	return 0;
821 }
822 
823 
824 int
825 esm_halt_input(void *sc)
826 {
827 	return 0;
828 }
829 
830 
831 static inline u_int
832 calc_timer_freq(struct esm_chinfo *ch)
833 {
834 	u_int freq;
835 
836 	freq = (ch->sample_rate + ch->apublk - 1) / ch->apublk;
837 
838 	DPRINTF(ESM_DEBUG_TIMER,
839 	    ("calc_timer_freq(%p): rate = %u, blk = 0x%x (0x%x): freq = %u\n",
840 	    ch, ch->sample_rate, ch->apublk, ch->blocksize, freq));
841 
842 	return freq;
843 }
844 
845 static void
846 set_timer(struct esm_softc *ess)
847 {
848 	unsigned freq = 0, freq2;
849 
850 	if (ess->pactive)
851 		freq = calc_timer_freq(&ess->pch);
852 
853 	if (ess->ractive) {
854 		freq2 = calc_timer_freq(&ess->rch);
855 		if (freq2 < freq)
856 			freq = freq2;
857 	}
858 
859 	for (; freq < MAESTRO_MINFREQ; freq <<= 1)
860 		;
861 
862 	if (freq > 0)
863 		wp_settimer(ess, freq);
864 }
865 
866 
867 static void
868 esmch_set_format(struct esm_chinfo *ch, struct audio_params *p)
869 {
870 	u_int16_t wcreg_tpl = (ch->base - 16) & WAVCACHE_CHCTL_ADDRTAG_MASK;
871 	u_int16_t aputype = APUTYPE_16BITLINEAR;
872 
873 	if (p->channels == 2) {
874 		wcreg_tpl |= WAVCACHE_CHCTL_STEREO;
875 		aputype++;
876 	}
877 	if (p->precision * p->factor == 8) {
878 		aputype += 2;
879 		if (p->encoding == AUDIO_ENCODING_ULINEAR)
880 			wcreg_tpl |= WAVCACHE_CHCTL_U8;
881 	}
882 	ch->wcreg_tpl = wcreg_tpl;
883 	ch->aputype = aputype;
884 	ch->sample_rate = p->sample_rate;
885 
886 	DPRINTF(ESM_DEBUG_PARAM, ("esmch_set_format: "
887 	    "numch=%d, prec=%d*%d, tpl=0x%x, aputype=%d, rate=%ld\n",
888 	    p->channels, p->precision, p->factor, wcreg_tpl, aputype,
889 	    p->sample_rate));
890 }
891 
892 
893 /*
894  * Audio interface glue functions
895  */
896 
897 int
898 esm_open(void *sc, int flags)
899 {
900 	DPRINTF(ESM_DEBUG_PARAM, ("esm_open(%p, 0x%x)\n", sc, flags));
901 
902 	return 0;
903 }
904 
905 
906 void
907 esm_close(void *sc)
908 {
909 	DPRINTF(ESM_DEBUG_PARAM, ("esm_close(%p)\n", sc));
910 }
911 
912 
913 int
914 esm_getdev (void *sc, struct audio_device *adp)
915 {
916 	*adp = esm_device;
917 	return 0;
918 }
919 
920 
921 int
922 esm_round_blocksize (void *sc, int blk)
923 {
924 	DPRINTF(ESM_DEBUG_PARAM,
925 	    ("esm_round_blocksize(%p, 0x%x)", sc, blk));
926 
927 	blk &= ~0x3f;		/* keep good alignment */
928 
929 	DPRINTF(ESM_DEBUG_PARAM, (" = 0x%x\n", blk));
930 
931 	return blk;
932 }
933 
934 
935 int
936 esm_query_encoding(void *sc, struct audio_encoding *fp)
937 {
938 	DPRINTF(ESM_DEBUG_PARAM,
939 	    ("esm_query_encoding(%p, %d)\n", sc, fp->index));
940 
941 	if (fp->index < 0 || fp->index >= MAESTRO_NENCODINGS)
942 		return EINVAL;
943 
944 	*fp = esm_encoding[fp->index];
945 	return 0;
946 }
947 
948 
949 int
950 esm_set_params(void *sc, int setmode, int usemode,
951 	struct audio_params *play, struct audio_params *rec)
952 {
953 	struct esm_softc *ess = sc;
954 	struct audio_params *p;
955 	int mode;
956 
957 	DPRINTF(ESM_DEBUG_PARAM,
958 	    ("esm_set_params(%p, 0x%x, 0x%x, %p, %p)\n",
959 	    sc, setmode, usemode, play, rec));
960 
961 	for (mode = AUMODE_RECORD; mode != -1;
962 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
963 		if ((setmode & mode) == 0)
964 			continue;
965 
966 		p = mode == AUMODE_PLAY ? play : rec;
967 
968 		if (p->sample_rate < 4000 || p->sample_rate > 48000 ||
969 		    (p->precision != 8 && p->precision != 16) ||
970 		    (p->channels != 1 && p->channels != 2))
971 			return EINVAL;
972 
973 		p->factor = 1;
974 		p->sw_code = 0;
975 		switch (p->encoding) {
976 		case AUDIO_ENCODING_SLINEAR_BE:
977 			if (p->precision == 16)
978 				p->sw_code = swap_bytes;
979 			else
980 				p->sw_code = change_sign8;
981 			break;
982 		case AUDIO_ENCODING_SLINEAR_LE:
983 			if (p->precision != 16)
984 				p->sw_code = change_sign8;
985 			break;
986 		case AUDIO_ENCODING_ULINEAR_BE:
987 			if (p->precision == 16) {
988 				if (mode == AUMODE_PLAY)
989 					p->sw_code = swap_bytes_change_sign16_le;
990 				else
991 					p->sw_code = change_sign16_swap_bytes_le;
992 			}
993 			break;
994 		case AUDIO_ENCODING_ULINEAR_LE:
995 			if (p->precision == 16)
996 				p->sw_code = change_sign16_le;
997 			break;
998 		case AUDIO_ENCODING_ULAW:
999 			if (mode == AUMODE_PLAY) {
1000 				p->factor = 2;
1001 				p->sw_code = mulaw_to_slinear16_le;
1002 			} else
1003 				p->sw_code = ulinear8_to_mulaw;
1004 			break;
1005 		case AUDIO_ENCODING_ALAW:
1006 			if (mode == AUMODE_PLAY) {
1007 				p->factor = 2;
1008 				p->sw_code = alaw_to_slinear16_le;
1009 			} else
1010 				p->sw_code = ulinear8_to_alaw;
1011 			break;
1012 		default:
1013 			return EINVAL;
1014 		}
1015 	}
1016 
1017 	if (setmode & AUMODE_PLAY)
1018 		esmch_set_format(&ess->pch, play);
1019 
1020 	if (setmode & AUMODE_RECORD)
1021 		esmch_set_format(&ess->rch, rec);
1022 
1023 	return 0;
1024 }
1025 
1026 
1027 int
1028 esm_set_port(void *sc, mixer_ctrl_t *cp)
1029 {
1030 	struct esm_softc *ess = sc;
1031 
1032 	return (ess->codec_if->vtbl->mixer_set_port(ess->codec_if, cp));
1033 }
1034 
1035 
1036 int
1037 esm_get_port(void *sc, mixer_ctrl_t *cp)
1038 {
1039 	struct esm_softc *ess = sc;
1040 
1041 	return (ess->codec_if->vtbl->mixer_get_port(ess->codec_if, cp));
1042 }
1043 
1044 
1045 int
1046 esm_query_devinfo(void *sc, mixer_devinfo_t *dip)
1047 {
1048 	struct esm_softc *ess = sc;
1049 
1050 	return (ess->codec_if->vtbl->query_devinfo(ess->codec_if, dip));
1051 }
1052 
1053 
1054 void *
1055 esm_malloc(void *sc, int direction, size_t size, int pool, int flags)
1056 {
1057 	struct esm_softc *ess = sc;
1058 	struct esm_dma *p;
1059 	int error;
1060 
1061 	DPRINTF(ESM_DEBUG_DMA,
1062 	    ("esm_malloc(%p, %d, 0x%x, 0x%x, 0x%x)",
1063 	    sc, direction, size, pool, flags));
1064 
1065 	p = malloc(sizeof(*p), pool, flags);
1066 	if (!p)
1067 		return 0;
1068 	error = esm_allocmem(ess, size, 16, p);
1069 	if (error) {
1070 		free(p, pool);
1071 		DPRINTF(ESM_DEBUG_DMA, (" = 0 (ENOMEM)\n"));
1072 		return 0;
1073 	}
1074 	p->next = ess->sc_dmas;
1075 	ess->sc_dmas = p;
1076 
1077 	DPRINTF(ESM_DEBUG_DMA,
1078 	    (": KERNADDR(%p) = %p (DMAADDR 0x%x)\n", p, KERNADDR(p), (int)DMAADDR(p)));
1079 
1080 	return KERNADDR(p);
1081 }
1082 
1083 
1084 void
1085 esm_free(void *sc, void *ptr, int pool)
1086 {
1087 	struct esm_softc *ess = sc;
1088 	struct esm_dma *p, **pp;
1089 
1090 	DPRINTF(ESM_DEBUG_DMA,
1091 	    ("esm_free(%p, %p, 0x%x)\n",
1092 	    sc, ptr, pool));
1093 
1094 	for (pp = &ess->sc_dmas; (p = *pp) != NULL; pp = &p->next) {
1095 		if (KERNADDR(p) == ptr) {
1096 			esm_freemem(ess, p);
1097 			*pp = p->next;
1098 			free(p, pool);
1099 			return;
1100 		}
1101 	}
1102 }
1103 
1104 
1105 size_t
1106 esm_round_buffersize(void *sc, int direction, size_t size)
1107 {
1108 	return size;
1109 }
1110 
1111 
1112 paddr_t
1113 esm_mappage(void *sc, void *mem, off_t off, int prot)
1114 {
1115 	struct esm_softc *ess = sc;
1116 	struct esm_dma *p;
1117 
1118 	DPRINTF(ESM_DEBUG_DMA,
1119 	    ("esm_mappage(%p, %p, 0x%lx, 0x%x)\n",
1120 	    sc, mem, (unsigned long)off, prot));
1121 
1122 	if (off < 0)
1123 		return (-1);
1124 
1125 	for (p = ess->sc_dmas; p && KERNADDR(p) != mem; p = p->next)
1126 		;
1127 	if (!p)
1128 		return (-1);
1129 	return bus_dmamem_mmap(ess->dmat, p->segs, p->nsegs, off,
1130 	    prot, BUS_DMA_WAITOK);
1131 }
1132 
1133 
1134 int
1135 esm_get_props(void *sc)
1136 {
1137 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
1138 }
1139 
1140 
1141 /* -----------------------------
1142  * Bus space.
1143  */
1144 
1145 int
1146 esm_intr(void *sc)
1147 {
1148 	struct esm_softc *ess = sc;
1149 	u_int16_t status;
1150 	u_int16_t pos;
1151 	int ret = 0;
1152 
1153 	status = bus_space_read_1(ess->st, ess->sh, PORT_HOSTINT_STAT);
1154 	if (!status)
1155 		return 0;
1156 
1157 	/* Acknowledge all. */
1158 	bus_space_write_2(ess->st, ess->sh, PORT_INT_STAT, 1);
1159 	bus_space_write_1(ess->st, ess->sh, PORT_HOSTINT_STAT, 0);
1160 #if 0	/* XXX - HWVOL */
1161 	if (status & HOSTINT_STAT_HWVOL) {
1162 		u_int delta;
1163 		delta = bus_space_read_1(ess->st, ess->sh, PORT_HWVOL_MASTER)
1164 		    - 0x88;
1165 		if (delta & 0x11)
1166 			mixer_set(device_get_softc(ess->dev),
1167 			    SOUND_MIXER_VOLUME, 0);
1168 		else {
1169 			mixer_set(device_get_softc(ess->dev),
1170 			    SOUND_MIXER_VOLUME,
1171 			    mixer_get(device_get_softc(ess->dev),
1172 				SOUND_MIXER_VOLUME)
1173 			    + ((delta >> 5) & 0x7) - 4
1174 			    + ((delta << 7) & 0x700) - 0x400);
1175 		}
1176 		bus_space_write_1(ess->st, ess->sh, PORT_HWVOL_MASTER, 0x88);
1177 		ret++;
1178 	}
1179 #endif	/* XXX - HWVOL */
1180 
1181 	if (ess->pactive) {
1182 		pos = wp_rdapu(ess, ess->pch.num << 1, APUREG_CURPTR);
1183 
1184 		DPRINTF(ESM_DEBUG_IRQ, (" %4.4x/%4.4x ", pos,
1185 		    wp_rdapu(ess, (ess->pch.num<<1)+1, APUREG_CURPTR)));
1186 
1187 		if (pos >= ess->pch.nextirq &&
1188 		    pos - ess->pch.nextirq < ess->pch.apubuf / 2) {
1189 			ess->pch.nextirq += ess->pch.apublk;
1190 
1191 			if (ess->pch.nextirq >= ess->pch.apubuf)
1192 				ess->pch.nextirq = 0;
1193 
1194 			if (ess->sc_pintr) {
1195 				DPRINTF(ESM_DEBUG_IRQ, ("P\n"));
1196 				ess->sc_pintr(ess->sc_parg);
1197 			}
1198 
1199 		}
1200 		ret++;
1201 	}
1202 
1203 	if (ess->ractive) {
1204 		pos = wp_rdapu(ess, ess->rch.num << 1, APUREG_CURPTR);
1205 
1206 		DPRINTF(ESM_DEBUG_IRQ, (" %4.4x/%4.4x ", pos,
1207 		    wp_rdapu(ess, (ess->rch.num<<1)+1, APUREG_CURPTR)));
1208 
1209 		if (pos >= ess->rch.nextirq &&
1210 		    pos - ess->rch.nextirq < ess->rch.apubuf / 2) {
1211 			ess->rch.nextirq += ess->rch.apublk;
1212 
1213 			if (ess->rch.nextirq >= ess->rch.apubuf)
1214 				ess->rch.nextirq = 0;
1215 
1216 			if (ess->sc_rintr) {
1217 				DPRINTF(ESM_DEBUG_IRQ, ("R\n"));
1218 				ess->sc_rintr(ess->sc_parg);
1219 			}
1220 
1221 		}
1222 		ret++;
1223 	}
1224 
1225 	return ret;
1226 }
1227 
1228 
1229 int
1230 esm_allocmem(struct esm_softc *sc, size_t size, size_t align,
1231     struct esm_dma *p)
1232 {
1233 	int error;
1234 
1235 	p->size = size;
1236 	error = bus_dmamem_alloc(sc->dmat, p->size, align, 0,
1237 				 p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
1238 				 &p->nsegs, BUS_DMA_NOWAIT);
1239 	if (error)
1240 		return error;
1241 
1242 	error = bus_dmamem_map(sc->dmat, p->segs, p->nsegs, p->size,
1243 			       &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
1244 	if (error)
1245 		goto free;
1246 
1247 	error = bus_dmamap_create(sc->dmat, p->size, 1, p->size,
1248 				  0, BUS_DMA_NOWAIT, &p->map);
1249 	if (error)
1250 		goto unmap;
1251 
1252 	error = bus_dmamap_load(sc->dmat, p->map, p->addr, p->size, NULL,
1253 				BUS_DMA_NOWAIT);
1254 	if (error)
1255 		goto destroy;
1256 
1257 	return 0;
1258 
1259  destroy:
1260 	bus_dmamap_destroy(sc->dmat, p->map);
1261  unmap:
1262 	bus_dmamem_unmap(sc->dmat, p->addr, p->size);
1263  free:
1264 	bus_dmamem_free(sc->dmat, p->segs, p->nsegs);
1265 
1266 	return error;
1267 }
1268 
1269 
1270 int
1271 esm_freemem(struct esm_softc *sc, struct esm_dma *p)
1272 {
1273 	bus_dmamap_unload(sc->dmat, p->map);
1274 	bus_dmamap_destroy(sc->dmat, p->map);
1275 	bus_dmamem_unmap(sc->dmat, p->addr, p->size);
1276 	bus_dmamem_free(sc->dmat, p->segs, p->nsegs);
1277 	return 0;
1278 }
1279 
1280 
1281 int
1282 esm_match(struct device *dev, struct cfdata *match, void *aux)
1283 {
1284 	struct pci_attach_args *pa = (struct pci_attach_args *) aux;
1285 
1286 	switch (PCI_VENDOR(pa->pa_id)) {
1287 	case PCI_VENDOR_ESSTECH:
1288 		switch (PCI_PRODUCT(pa->pa_id)) {
1289 		case PCI_PRODUCT_ESSTECH_MAESTRO1:
1290 		case PCI_PRODUCT_ESSTECH_MAESTRO2:
1291 		case PCI_PRODUCT_ESSTECH_MAESTRO2E:
1292 			return 1;
1293 		}
1294 
1295 	case PCI_VENDOR_ESSTECH2:
1296 		switch (PCI_PRODUCT(pa->pa_id)) {
1297 		case PCI_PRODUCT_ESSTECH2_MAESTRO1:
1298 			return 1;
1299 		}
1300 	}
1301 	return 0;
1302 }
1303 
1304 void
1305 esm_attach(struct device *parent, struct device *self, void *aux)
1306 {
1307 	struct esm_softc *ess = (struct esm_softc *)self;
1308 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
1309 	pci_chipset_tag_t pc = pa->pa_pc;
1310 	pcitag_t tag = pa->pa_tag;
1311 	pci_intr_handle_t ih;
1312 	pcireg_t csr, data;
1313 	u_int16_t codec_data;
1314 	const char *intrstr;
1315 	int revision;
1316 	char devinfo[256];
1317 
1318 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
1319 	revision = PCI_REVISION(pa->pa_class);
1320 	printf(": %s (rev. 0x%02x)\n", devinfo, revision);
1321 
1322 	/* Enable the device. */
1323 	csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
1324 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
1325 	    csr | PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE);
1326 
1327 	/* Map I/O register */
1328 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
1329 	    &ess->st, &ess->sh, NULL, NULL)) {
1330 		printf("%s: can't map i/o space\n", ess->sc_dev.dv_xname);
1331 		return;
1332 	}
1333 
1334 	/* Initialize softc */
1335 	ess->pch.num = 0;
1336 	ess->rch.num = 2;
1337 	ess->dmat = pa->pa_dmat;
1338 	ess->tag = tag;
1339 	ess->pc = pc;
1340 	ess->subid = pci_conf_read(pc, tag, PCI_SUBSYS_ID_REG);
1341 
1342 	DPRINTF(ESM_DEBUG_PCI,
1343 	    ("%s: sub-system vendor 0x%4.4x, product 0x%4.4x\n",
1344 	    ess->sc_dev.dv_xname,
1345 	    PCI_VENDOR(ess->subid), PCI_PRODUCT(ess->subid)));
1346 
1347 	/* Map and establish the interrupt. */
1348 	if (pci_intr_map(pa, &ih)) {
1349 		printf("%s: can't map interrupt\n", ess->sc_dev.dv_xname);
1350 		return;
1351 	}
1352 	intrstr = pci_intr_string(pc, ih);
1353 	ess->ih = pci_intr_establish(pc, ih, IPL_AUDIO, esm_intr, self);
1354 	if (ess->ih == NULL) {
1355 		printf("%s: can't establish interrupt", ess->sc_dev.dv_xname);
1356 		if (intrstr != NULL)
1357 			printf(" at %s", intrstr);
1358 		printf("\n");
1359 		return;
1360 	}
1361 	printf("%s: interrupting at %s\n", ess->sc_dev.dv_xname, intrstr);
1362 
1363 	/*
1364 	 * Setup PCI config registers
1365 	 */
1366 
1367 	/* set to power state D0 */
1368 	esm_power(ess, PCI_PMCSR_STATE_D0);
1369 	delay(100000);
1370 
1371 	/* Disable all legacy emulations. */
1372 	data = pci_conf_read(pc, tag, CONF_LEGACY);
1373 	pci_conf_write(pc, tag, CONF_LEGACY, data | LEGACY_DISABLED);
1374 
1375 	/* Disconnect from CHI. (Makes Dell inspiron 7500 work?)
1376 	 * Enable posted write.
1377 	 * Prefer PCI timing rather than that of ISA.
1378 	 * Don't swap L/R. */
1379 	data = pci_conf_read(pc, tag, CONF_MAESTRO);
1380 	data |= MAESTRO_CHIBUS | MAESTRO_POSTEDWRITE | MAESTRO_DMA_PCITIMING;
1381 	data &= ~MAESTRO_SWAP_LR;
1382 	pci_conf_write(pc, tag, CONF_MAESTRO, data);
1383 
1384 	/* initialize sound chip */
1385 	esm_init(ess);
1386 
1387 	esm_read_codec(ess, 0, &codec_data);
1388 	if (codec_data == 0x80) {
1389 		printf("%s: PT101 codec detected!\n", ess->sc_dev.dv_xname);
1390 		return;
1391 	}
1392 
1393 	/*
1394 	 * Some cards and Notebooks appear to have left and right channels
1395 	 * reversed.  Check if there is a corresponding quirk entry for
1396 	 * the subsystem vendor and product and if so, set the appropriate
1397 	 * codec flag.
1398 	 */
1399 	if (esm_get_quirks(ess->subid) & ESM_QUIRKF_SWAPPEDCH) {
1400 		ess->codec_flags |= AC97_HOST_SWAPPED_CHANNELS;
1401 	}
1402 	ess->codec_flags |= AC97_HOST_DONT_READ;
1403 
1404 	/* initialize AC97 host interface */
1405 	ess->host_if.arg = self;
1406 	ess->host_if.attach = esm_attach_codec;
1407 	ess->host_if.read = esm_read_codec;
1408 	ess->host_if.write = esm_write_codec;
1409 	ess->host_if.reset = esm_reset_codec;
1410 	ess->host_if.flags = esm_flags_codec;
1411 
1412 	if (ac97_attach(&ess->host_if) != 0)
1413 		return;
1414 
1415 	audio_attach_mi(&esm_hw_if, self, &ess->sc_dev);
1416 
1417 	ess->esm_suspend = PWR_RESUME;
1418 	ess->esm_powerhook = powerhook_establish(esm_powerhook, ess);
1419 }
1420 
1421 /* Power Hook */
1422 void
1423 esm_powerhook(why, v)
1424 	int why;
1425 	void *v;
1426 {
1427 	struct esm_softc *ess = (struct esm_softc *)v;
1428 
1429 	DPRINTF(ESM_DEBUG_PARAM,
1430 	("%s: ESS maestro 2E why=%d\n", ess->sc_dev.dv_xname, why));
1431 	switch (why) {
1432 		case PWR_SUSPEND:
1433 		case PWR_STANDBY:
1434 			ess->esm_suspend = why;
1435 			esm_suspend(ess);
1436 			DPRINTF(ESM_DEBUG_RESUME, ("esm_suspend\n"));
1437 			break;
1438 
1439 		case PWR_RESUME:
1440 			ess->esm_suspend = why;
1441 			esm_resume(ess);
1442 			DPRINTF(ESM_DEBUG_RESUME, ("esm_resumed\n"));
1443 			break;
1444 	}
1445 }
1446 
1447 int
1448 esm_suspend(struct esm_softc *ess)
1449 {
1450 	int x;
1451 
1452 	x = splaudio();
1453 	wp_stoptimer(ess);
1454 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL, 0);
1455 
1456 	esm_halt_output(ess);
1457 	esm_halt_input(ess);
1458 	splx(x);
1459 
1460 	/* Power down everything except clock. */
1461 	esm_write_codec(ess, AC97_REG_POWER, 0xdf00);
1462 	delay(20);
1463 	bus_space_write_4(ess->st, ess->sh, PORT_RINGBUS_CTRL, 0);
1464 	delay(1);
1465 	esm_power(ess, PCI_PMCSR_STATE_D3);
1466 
1467 	return 0;
1468 }
1469 
1470 int
1471 esm_resume(struct esm_softc *ess)
1472 {
1473 	int x;
1474 
1475 	esm_power(ess, PCI_PMCSR_STATE_D0);
1476 	delay(100000);
1477 	esm_init(ess);
1478 
1479 	(*ess->codec_if->vtbl->restore_ports)(ess->codec_if);
1480 #if 0
1481 	if (mixer_reinit(dev)) {
1482 		printf("%s: unable to reinitialize the mixer\n",
1483 		    ess->sc_dev.dv_xname);
1484 		return ENXIO;
1485 	}
1486 #endif
1487 
1488 	x = splaudio();
1489 #if TODO
1490 	if (ess->pactive)
1491 		esm_start_output(ess);
1492 	if (ess->ractive)
1493 		esm_start_input(ess);
1494 #endif
1495 	if (ess->pactive || ess->ractive) {
1496 		set_timer(ess);
1497 		wp_starttimer(ess);
1498 	}
1499 	splx(x);
1500 	return 0;
1501 }
1502 
1503 #if 0
1504 int
1505 esm_shutdown(struct esm_softc *ess)
1506 {
1507 	int i;
1508 
1509 	wp_stoptimer(ess);
1510 	bus_space_write_2(ess->st, ess->sh, PORT_HOSTINT_CTRL, 0);
1511 
1512 	esm_halt_output(ess);
1513 	esm_halt_input(ess);
1514 
1515 	return 0;
1516 }
1517 #endif
1518