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esa.c revision 1.11
      1 /* $NetBSD: esa.c,v 1.11 2002/03/16 14:34:00 jmcneill Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2001, 2002 Jared D. McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     23  * 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  * ESS Allegro-1 / Maestro3 Audio Driver
     30  *
     31  * Based on the FreeBSD maestro3 driver and the NetBSD eap driver.
     32  * Original driver by Don Kim.
     33  *
     34  * The list management code could possibly be written better, but what
     35  * we have right now does the job nicely. Thanks to Zach Brown <zab (at) zabbo.net>
     36  * and Andrew MacDonald <amac (at) epsilon.yi.org> for helping me debug the
     37  * problems with the original list management code present in the Linux
     38  * driver.
     39  */
     40 
     41 #include <sys/types.h>
     42 #include <sys/errno.h>
     43 #include <sys/null.h>
     44 #include <sys/param.h>
     45 #include <sys/systm.h>
     46 #include <sys/malloc.h>
     47 #include <sys/device.h>
     48 #include <sys/conf.h>
     49 #include <sys/exec.h>
     50 #include <sys/select.h>
     51 #include <sys/audioio.h>
     52 
     53 #include <machine/bus.h>
     54 #include <machine/intr.h>
     55 
     56 #include <dev/pci/pcidevs.h>
     57 #include <dev/pci/pcivar.h>
     58 
     59 #include <dev/audio_if.h>
     60 #include <dev/mulaw.h>
     61 #include <dev/auconv.h>
     62 #include <dev/ic/ac97var.h>
     63 #include <dev/ic/ac97reg.h>
     64 
     65 #include <dev/pci/esareg.h>
     66 #include <dev/pci/esadsp.h>
     67 #include <dev/pci/esavar.h>
     68 
     69 #define PCI_CBIO	0x10
     70 
     71 #define ESA_DAC_DATA	0x1100
     72 
     73 enum {
     74 	ESS_ALLEGRO1,
     75 	ESS_MAESTRO3
     76 };
     77 
     78 static struct esa_card_type {
     79 	u_int16_t pci_vendor_id;
     80 	u_int16_t pci_product_id;
     81 	int type;
     82 	int delay1, delay2;
     83 } esa_card_types[] = {
     84 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_ALLEGRO1,
     85 	  ESS_ALLEGRO1, 50, 800 },
     86 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3,
     87 	  ESS_MAESTRO3, 20, 500 },
     88 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3_2,
     89 	  ESS_MAESTRO3, 20, 500 },
     90 	{ 0, 0, 0, 0, 0 }
     91 };
     92 
     93 struct audio_device esa_device = {
     94 	"ESS Allegro",
     95 	"",
     96 	"esa"
     97 };
     98 
     99 int		esa_match(struct device *, struct cfdata *, void *);
    100 void		esa_attach(struct device *, struct device *, void *);
    101 int		esa_detach(struct device *, int);
    102 
    103 /* audio(9) functions */
    104 int		esa_open(void *, int);
    105 void		esa_close(void *);
    106 int		esa_query_encoding(void *, struct audio_encoding *);
    107 int		esa_set_params(void *, int, int, struct audio_params *,
    108 			       struct audio_params *);
    109 int		esa_round_blocksize(void *, int);
    110 int		esa_commit_settings(void *);
    111 int		esa_halt_output(void *);
    112 int		esa_halt_input(void *);
    113 int		esa_set_port(void *, mixer_ctrl_t *);
    114 int		esa_get_port(void *, mixer_ctrl_t *);
    115 int		esa_query_devinfo(void *, mixer_devinfo_t *);
    116 void *		esa_malloc(void *, int, size_t, int, int);
    117 void		esa_free(void *, void *, int);
    118 int		esa_getdev(void *, struct audio_device *);
    119 size_t		esa_round_buffersize(void *, int, size_t);
    120 int		esa_get_props(void *);
    121 int		esa_trigger_output(void *, void *, void *, int,
    122 				   void (*)(void *), void *,
    123 				   struct audio_params *);
    124 int		esa_trigger_input(void *, void *, void *, int,
    125 				  void (*)(void *), void *,
    126 				  struct audio_params *);
    127 
    128 int		esa_intr(void *);
    129 int		esa_allocmem(struct esa_softc *, size_t, size_t,
    130 			     struct esa_dma *);
    131 int		esa_freemem(struct esa_softc *, struct esa_dma *);
    132 paddr_t		esa_mappage(void *addr, void *mem, off_t off, int prot);
    133 
    134 /* Supporting subroutines */
    135 u_int16_t	esa_read_assp(struct esa_softc *, u_int16_t, u_int16_t);
    136 void		esa_write_assp(struct esa_softc *, u_int16_t, u_int16_t,
    137 			       u_int16_t);
    138 int		esa_init_codec(struct esa_softc *);
    139 int		esa_attach_codec(void *, struct ac97_codec_if *);
    140 int		esa_read_codec(void *, u_int8_t, u_int16_t *);
    141 int		esa_write_codec(void *, u_int8_t, u_int16_t);
    142 void		esa_reset_codec(void *);
    143 enum ac97_host_flags	esa_flags_codec(void *);
    144 int		esa_wait(struct esa_softc *);
    145 int		esa_init(struct esa_softc *);
    146 void		esa_config(struct esa_softc *);
    147 u_int8_t	esa_assp_halt(struct esa_softc *);
    148 void		esa_codec_reset(struct esa_softc *);
    149 int		esa_amp_enable(struct esa_softc *);
    150 void		esa_enable_interrupts(struct esa_softc *);
    151 u_int32_t	esa_get_pointer(struct esa_softc *, struct esa_channel *);
    152 
    153 /* list management */
    154 int		esa_add_list(struct esa_voice *, struct esa_list *, u_int16_t,
    155 			     int);
    156 void		esa_remove_list(struct esa_voice *, struct esa_list *, int);
    157 
    158 /* power management */
    159 int		esa_power(struct esa_softc *, int);
    160 void		esa_powerhook(int, void *);
    161 int		esa_suspend(struct esa_softc *);
    162 int		esa_resume(struct esa_softc *);
    163 
    164 static audio_encoding_t esa_encoding[] = {
    165 	{ 0, AudioEulinear, AUDIO_ENCODING_ULINEAR, 8, 0 },
    166 	{ 1, AudioEmulaw, AUDIO_ENCODING_ULAW, 8,
    167 		AUDIO_ENCODINGFLAG_EMULATED },
    168 	{ 2, AudioEalaw, AUDIO_ENCODING_ALAW, 8, AUDIO_ENCODINGFLAG_EMULATED },
    169 	{ 3, AudioEslinear, AUDIO_ENCODING_SLINEAR, 8,
    170 		AUDIO_ENCODINGFLAG_EMULATED }, /* XXX: Are you sure? */
    171 	{ 4, AudioEslinear_le, AUDIO_ENCODING_SLINEAR_LE, 16, 0 },
    172 	{ 5, AudioEulinear_le, AUDIO_ENCODING_ULINEAR_LE, 16,
    173 		AUDIO_ENCODINGFLAG_EMULATED },
    174 	{ 6, AudioEslinear_be, AUDIO_ENCODING_SLINEAR_BE, 16,
    175 		AUDIO_ENCODINGFLAG_EMULATED },
    176 	{ 7, AudioEulinear_be, AUDIO_ENCODING_ULINEAR_BE, 16,
    177 		AUDIO_ENCODINGFLAG_EMULATED }
    178 };
    179 
    180 #define ESA_NENCODINGS 8
    181 
    182 struct audio_hw_if esa_hw_if = {
    183 	esa_open,
    184 	esa_close,
    185 	NULL,			/* drain */
    186 	esa_query_encoding,
    187 	esa_set_params,
    188 	esa_round_blocksize,
    189 	esa_commit_settings,
    190 	NULL,			/* init_output */
    191 	NULL,			/* init_input */
    192 	NULL,			/* start_output */
    193 	NULL,			/* start_input */
    194 	esa_halt_output,
    195 	esa_halt_input,
    196 	NULL,			/* speaker_ctl */
    197 	esa_getdev,
    198 	NULL,			/* getfd */
    199 	esa_set_port,
    200 	esa_get_port,
    201 	esa_query_devinfo,
    202 	esa_malloc,
    203 	esa_free,
    204 	esa_round_buffersize,
    205 	esa_mappage,
    206 	esa_get_props,
    207 	esa_trigger_output,
    208 	esa_trigger_input
    209 };
    210 
    211 struct cfattach esa_ca = {
    212 	sizeof(struct esa_softc), esa_match, esa_attach,
    213 	esa_detach, /*esa_activate*/ NULL
    214 };
    215 
    216 /*
    217  * audio(9) functions
    218  */
    219 
    220 int
    221 esa_open(void *hdl, int flags)
    222 {
    223 
    224 	return (0);
    225 }
    226 
    227 void
    228 esa_close(void *hdl)
    229 {
    230 
    231 	return;
    232 }
    233 
    234 int
    235 esa_query_encoding(void *hdl, struct audio_encoding *ae)
    236 {
    237 
    238 	if (ae->index < 0 || ae->index >= ESA_NENCODINGS)
    239 		return (EINVAL);
    240 	*ae = esa_encoding[ae->index];
    241 
    242 	return (0);
    243 }
    244 
    245 int
    246 esa_set_params(void *hdl, int setmode, int usemode, struct audio_params *play,
    247 	       struct audio_params *rec)
    248 {
    249 	struct esa_voice *vc = hdl;
    250 	//struct esa_softc *sc = (struct esa_softc *)vc->parent;
    251 	struct esa_channel *ch;
    252 	struct audio_params *p;
    253 	int mode;
    254 
    255 	for (mode = AUMODE_RECORD; mode != -1;
    256 	     mode = (mode == AUMODE_RECORD) ? AUMODE_PLAY : -1) {
    257 		if ((setmode & mode) == 0)
    258 			continue;
    259 
    260 		switch (mode) {
    261 		case AUMODE_PLAY:
    262 			p = play;
    263 			ch = &vc->play;
    264 			break;
    265 		case AUMODE_RECORD:
    266 			p = rec;
    267 			ch = &vc->rec;
    268 			break;
    269 		}
    270 
    271 		if (p->sample_rate < ESA_MINRATE ||
    272 		    p->sample_rate > ESA_MAXRATE ||
    273 		    (p->precision != 8 && p->precision != 16) ||
    274 		    (p->channels < 1 && p->channels > 2))
    275 			return (EINVAL);
    276 
    277 		p->factor = 1;
    278 		p->sw_code = 0;
    279 
    280 		switch(p->encoding) {
    281 		case AUDIO_ENCODING_SLINEAR_BE:
    282 			if (p->precision == 16)
    283 				p->sw_code = swap_bytes;
    284 			else
    285 				p->sw_code = change_sign8;
    286 			break;
    287 		case AUDIO_ENCODING_SLINEAR_LE:
    288 			if (p->precision != 16)
    289 				p->sw_code = change_sign8;
    290 			break;
    291 		case AUDIO_ENCODING_ULINEAR_BE:
    292 			if (p->precision == 16) {
    293 				if (mode == AUMODE_PLAY)
    294 					p->sw_code =
    295 					    swap_bytes_change_sign16_le;
    296 				else
    297 					p->sw_code =
    298 					    change_sign16_swap_bytes_le;
    299 			}
    300 			break;
    301 		case AUDIO_ENCODING_ULINEAR_LE:
    302 			if (p->precision == 16)
    303 				p->sw_code = change_sign16_le;
    304 			break;
    305 		case AUDIO_ENCODING_ULAW:
    306 			if (mode == AUMODE_PLAY) {
    307 				p->factor = 2;
    308 				p->sw_code = mulaw_to_slinear16_le;
    309 			} else
    310 				p->sw_code = ulinear8_to_mulaw;
    311 			break;
    312 		case AUDIO_ENCODING_ALAW:
    313 			if (mode == AUMODE_PLAY) {
    314 				p->factor = 2;
    315 				p->sw_code = alaw_to_slinear16_le;
    316 			} else
    317 				p->sw_code = ulinear8_to_alaw;
    318 			break;
    319 		default:
    320 			return (EINVAL);
    321 		}
    322 
    323 		ch->mode = *p;
    324 	}
    325 
    326 	return (0);
    327 }
    328 
    329 int
    330 esa_commit_settings(void *hdl)
    331 {
    332 	struct esa_voice *vc = hdl;
    333 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    334 	struct audio_params *p = &vc->play.mode;
    335 	struct audio_params *r = &vc->rec.mode;
    336 	u_int32_t data;
    337 	u_int32_t freq;
    338 	int data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    339 			   (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    340 			   (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
    341 			   &~ 255;
    342 
    343 	/* playback */
    344 	vc->play.data_offset = ESA_DAC_DATA + (data_bytes * vc->index);
    345 	if (p->channels == 1)
    346 		data = 1;
    347 	else
    348 		data = 0;
    349 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    350 		       vc->play.data_offset + ESA_SRC3_MODE_OFFSET,
    351 		       data);
    352 	if (p->precision * p->factor == 8)
    353 		data = 1;
    354 	else
    355 		data = 0;
    356 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    357 		       vc->play.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
    358 		       data);
    359 	if ((freq = ((p->sample_rate << 15) + 24000) / 48000) != 0) {
    360 		freq--;
    361 	}
    362 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    363 		       vc->play.data_offset + ESA_CDATA_FREQUENCY, freq);
    364 
    365 	/* recording */
    366 	vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * vc->index) +
    367 			      (data_bytes / 2);
    368 	if (r->channels == 1)
    369 		data = 1;
    370 	else
    371 		data = 0;
    372 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    373 		       vc->rec.data_offset + ESA_SRC3_MODE_OFFSET,
    374 		       data);
    375 	if (r->precision * r->factor == 8)
    376 		data = 1;
    377 	else
    378 		data = 0;
    379 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    380 		       vc->rec.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
    381 		       data);
    382 	if ((freq = ((r->sample_rate << 15) + 24000) / 48000) != 0) {
    383 		freq--;
    384 	}
    385 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    386 		       vc->rec.data_offset + ESA_CDATA_FREQUENCY, freq);
    387 
    388 	return (0);
    389 };
    390 
    391 int
    392 esa_round_blocksize(void *hdl, int bs)
    393 {
    394 	struct esa_voice *vc = hdl;
    395 
    396 	/*
    397 	 * Surely there has to be a better solution...
    398 	 */
    399 	vc->play.blksize = vc->rec.blksize = 4096;
    400 
    401 	return (vc->play.blksize);
    402 }
    403 
    404 int
    405 esa_halt_output(void *hdl)
    406 {
    407 	struct esa_voice *vc = hdl;
    408 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    409 	bus_space_tag_t iot = sc->sc_iot;
    410 	bus_space_handle_t ioh = sc->sc_ioh;
    411 	u_int16_t data;
    412 
    413 	if (vc->play.active == 0)
    414 		return (0);
    415 
    416 	vc->play.active = 0;
    417 
    418 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    419 		       ESA_CDATA_INSTANCE_READY + vc->play.data_offset, 0);
    420 
    421 	sc->sc_ntimers--;
    422 	if (sc->sc_ntimers == 0) {
    423 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    424 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
    425 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    426 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
    427 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    428 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    429 		    data & ~ESA_CLKRUN_GEN_ENABLE);
    430 	}
    431 
    432 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    433 		       ESA_KDATA_MIXER_TASK_NUMBER,
    434 		       sc->mixer_list.indexmap[vc->index]);
    435 	/* remove ourselves from the packed lists */
    436 	esa_remove_list(vc, &sc->mixer_list, vc->index);
    437 	esa_remove_list(vc, &sc->dma_list, vc->index);
    438 	esa_remove_list(vc, &sc->msrc_list, vc->index);
    439 
    440 	return (0);
    441 }
    442 
    443 int
    444 esa_halt_input(void *hdl)
    445 {
    446 	struct esa_voice *vc = hdl;
    447 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    448 	bus_space_tag_t iot = sc->sc_iot;
    449 	bus_space_handle_t ioh = sc->sc_ioh;
    450 	u_int32_t data;
    451 
    452 	if (vc->rec.active == 0)
    453 		return (0);
    454 
    455 	vc->rec.active = 0;
    456 
    457 	sc->sc_ntimers--;
    458 	if (sc->sc_ntimers == 0) {
    459 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    460 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
    461 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    462 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
    463 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    464 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    465 				  data & ~ESA_CLKRUN_GEN_ENABLE);
    466 	}
    467 
    468 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, vc->rec.data_offset +
    469 		       ESA_CDATA_INSTANCE_READY, 0);
    470 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
    471 		       0);
    472 
    473 	/* remove ourselves from the packed lists */
    474 	esa_remove_list(vc, &sc->adc1_list, vc->index + ESA_NUM_VOICES);
    475 	esa_remove_list(vc, &sc->dma_list, vc->index + ESA_NUM_VOICES);
    476 	esa_remove_list(vc, &sc->msrc_list, vc->index + ESA_NUM_VOICES);
    477 
    478 	return (0);
    479 }
    480 
    481 void *
    482 esa_malloc(void *hdl, int direction, size_t size, int type, int flags)
    483 {
    484 	struct esa_voice *vc = hdl;
    485 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    486 	struct esa_dma *p;
    487 	int error;
    488 
    489 	p = malloc(sizeof(*p), type, flags);
    490 	if (!p)
    491 		return (0);
    492 	error = esa_allocmem(sc, size, 16, p);
    493 	if (error) {
    494 		free(p, type);
    495 		printf("%s: esa_malloc: not enough memory\n",
    496 		    sc->sc_dev.dv_xname);
    497 		return (0);
    498 	}
    499 	p->next = vc->dma;
    500 	vc->dma = p;
    501 
    502 	return (KERNADDR(p));
    503 }
    504 
    505 void
    506 esa_free(void *hdl, void *addr, int type)
    507 {
    508 	struct esa_voice *vc = hdl;
    509 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    510 	struct esa_dma *p;
    511 	struct esa_dma **pp;
    512 
    513 	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
    514 		if (KERNADDR(p) == addr) {
    515 			esa_freemem(sc, p);
    516 			*pp = p->next;
    517 			free(p, type);
    518 			return;
    519 		}
    520 }
    521 
    522 int
    523 esa_getdev(void *hdl, struct audio_device *ret)
    524 {
    525 
    526 	*ret = esa_device;
    527 
    528 	return (0);
    529 }
    530 
    531 int
    532 esa_set_port(void *hdl, mixer_ctrl_t *mc)
    533 {
    534 	struct esa_voice *vc = hdl;
    535 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    536 
    537 	return (sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc));
    538 }
    539 
    540 int
    541 esa_get_port(void *hdl, mixer_ctrl_t *mc)
    542 {
    543 	struct esa_voice *vc = hdl;
    544 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    545 
    546 	return (sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc));
    547 }
    548 
    549 int
    550 esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
    551 {
    552 	struct esa_voice *vc = hdl;
    553 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    554 
    555 	return (sc->codec_if->vtbl->query_devinfo(sc->codec_if, di));
    556 }
    557 
    558 size_t
    559 esa_round_buffersize(void *hdl, int direction, size_t bufsize)
    560 {
    561 	struct esa_voice *vc = hdl;
    562 
    563 	/*
    564 	 * We must be able to do better than this...
    565 	 */
    566 	vc->play.bufsize = vc->rec.bufsize = 65536;
    567 
    568 	return (vc->play.bufsize);
    569 }
    570 
    571 int
    572 esa_get_props(void *hdl)
    573 {
    574 
    575 	return (AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX);
    576 }
    577 
    578 int
    579 esa_trigger_output(void *hdl, void *start, void *end, int blksize,
    580 			void (*intr)(void *), void *intrarg,
    581 			struct audio_params *param)
    582 {
    583 	struct esa_voice *vc = hdl;
    584 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    585 	struct esa_dma *p;
    586 	bus_space_tag_t iot = sc->sc_iot;
    587 	bus_space_handle_t ioh = sc->sc_ioh;
    588 	u_int32_t data;
    589 	u_int32_t bufaddr;
    590 	u_int32_t i;
    591 	size_t size;
    592 
    593 	int data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    594 			   (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    595 			   (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
    596 			   &~ 255;
    597 	int dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
    598 	int dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
    599 	int dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
    600 	int dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    601 	int dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    602 
    603 	if (vc->play.active)
    604 		return (EINVAL);
    605 
    606 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    607 		;
    608 	if (!p) {
    609 		printf("%s: esa_trigger_output: bad addr %p\n",
    610 		    sc->sc_dev.dv_xname, start);
    611 		return (EINVAL);
    612 	}
    613 
    614 	vc->play.active = 1;
    615 	vc->play.intr = intr;
    616 	vc->play.arg = intrarg;
    617 	vc->play.pos = 0;
    618 	vc->play.count = 0;
    619 	vc->play.buf = start;
    620 	size = (size_t)(((caddr_t)end - (caddr_t)start));
    621 	bufaddr = DMAADDR(p);
    622 	vc->play.start = bufaddr;
    623 
    624 #define LO(x) ((x) & 0x0000ffff)
    625 #define HI(x) ((x) >> 16)
    626 
    627 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    628 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    629 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    630 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    631 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    632 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    633 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    634 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    635 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    636 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    637 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    638 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    639 
    640 	/* DSP buffers */
    641 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    642 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    643 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    644 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    645 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    646 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    647 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    648 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    649 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    650 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    651 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    652 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    653 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    654 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    655 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    656 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    657 
    658 	/* Some per-client initializers */
    659 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    660 	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
    661 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    662 	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
    663 	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
    664 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    665 	    ESA_SRC3_DIRECTION_OFFSET + 22,
    666 	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
    667 	/* Tell it which way DMA is going */
    668 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    669 	    ESA_CDATA_DMA_CONTROL,
    670 	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
    671 	    ESA_DMAC_BLOCKF_SELECTOR);
    672 
    673 	/* Set an armload of static initializers */
    674 	for (i = 0; i < (sizeof(esa_playvals) / sizeof(esa_playvals[0])); i++)
    675 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    676 		    esa_playvals[i].addr, esa_playvals[i].val);
    677 
    678 	/* Put us in the packed task lists */
    679 	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
    680 		     vc->index);
    681 	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
    682 		     vc->index);
    683 	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
    684 		     vc->index);
    685 #undef LO
    686 #undef HI
    687 
    688 	/* XXX */
    689 	//esa_commit_settings(vc);
    690 
    691 	sc->sc_ntimers++;
    692 
    693 	if (sc->sc_ntimers == 1) {
    694 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    695 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    696 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    697 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    698 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    699 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    700 		    data | ESA_CLKRUN_GEN_ENABLE);
    701 	}
    702 
    703 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    704 	    ESA_CDATA_INSTANCE_READY, 1);
    705 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    706 	    ESA_KDATA_MIXER_TASK_NUMBER,
    707 	    sc->mixer_list.indexmap[vc->index]);
    708 
    709 	return (0);
    710 }
    711 
    712 int
    713 esa_trigger_input(void *hdl, void *start, void *end, int blksize,
    714 			void (*intr)(void *), void *intrarg,
    715 			struct audio_params *param)
    716 {
    717 	struct esa_voice *vc = hdl;
    718 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
    719 	struct esa_dma *p;
    720 	bus_space_tag_t iot = sc->sc_iot;
    721 	bus_space_handle_t ioh = sc->sc_ioh;
    722 	u_int32_t data;
    723 	u_int32_t bufaddr;
    724 	u_int32_t i;
    725 	size_t size;
    726 	int data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    727 			   (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    728 			   (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
    729 			   &~ 255;
    730 	int adc_data = ESA_DAC_DATA + (data_bytes * vc->index) +
    731 		       (data_bytes / 2);
    732 	int dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
    733 	int dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
    734 	int dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    735 	int dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    736 	vc->rec.data_offset = adc_data;
    737 
    738 	/* We only support 1 recording channel */
    739 	if (vc->index > 0)
    740 		return (ENODEV);
    741 
    742 	if (vc->rec.active)
    743 		return (EINVAL);
    744 
    745 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    746 		;
    747 	if (!p) {
    748 		printf("%s: esa_trigger_input: bad addr %p\n",
    749 		    sc->sc_dev.dv_xname, start);
    750 		return (EINVAL);
    751 	}
    752 
    753 	vc->rec.active = 1;
    754 	vc->rec.intr = intr;
    755 	vc->rec.arg = intrarg;
    756 	vc->rec.pos = 0;
    757 	vc->rec.count = 0;
    758 	vc->rec.buf = start;
    759 	size = (size_t)(((caddr_t)end - (caddr_t)start));
    760 	bufaddr = DMAADDR(p);
    761 	vc->rec.start = bufaddr;
    762 
    763 #define LO(x) ((x) & 0x0000ffff)
    764 #define HI(x) ((x) >> 16)
    765 
    766 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    767 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    768 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    769 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    770 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    771 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    772 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    773 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    774 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    775 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    776 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    777 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    778 
    779 	/* DSP buffers */
    780 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    781 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    782 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    783 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    784 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    785 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    786 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    787 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    788 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    789 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    790 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    791 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    792 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    793 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    794 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    795 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    796 
    797 	/* Some per-client initializers */
    798 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    799 	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
    800 	/* Tell it which way DMA is going */
    801 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    802 	    ESA_CDATA_DMA_CONTROL,
    803 	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
    804 	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
    805 
    806 	/* Set an armload of static initializers */
    807 	for (i = 0; i < (sizeof(esa_recvals) / sizeof(esa_recvals[0])); i++)
    808 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    809 		    esa_recvals[i].addr, esa_recvals[i].val);
    810 
    811 	/* Put us in the packed task lists */
    812 	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
    813 		     vc->index + ESA_NUM_VOICES);
    814 	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
    815 		     vc->index + ESA_NUM_VOICES);
    816 	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
    817 		     vc->index + ESA_NUM_VOICES);
    818 #undef LO
    819 #undef HI
    820 
    821 	/* XXX */
    822 	//esa_commit_settings(vc);
    823 
    824 	sc->sc_ntimers++;
    825 	if (sc->sc_ntimers == 1) {
    826 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    827 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    828 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    829 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    830 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    831 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    832 		    data | ESA_CLKRUN_GEN_ENABLE);
    833 	}
    834 
    835 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    836 	    ESA_CDATA_INSTANCE_READY, 1);
    837 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
    838 	    1);
    839 
    840 	return (0);
    841 }
    842 
    843 /* Interrupt handler */
    844 
    845 int
    846 esa_intr(void *hdl)
    847 {
    848 	struct esa_softc *sc = hdl;
    849 	struct esa_voice *vc;
    850 	bus_space_tag_t iot = sc->sc_iot;
    851 	bus_space_handle_t ioh = sc->sc_ioh;
    852 	u_int8_t status, ctl;
    853 	u_int32_t pos;
    854 	u_int32_t diff;
    855 	u_int32_t play_blksize, play_bufsize;
    856 	u_int32_t rec_blksize, rec_bufsize;
    857 	int i;
    858 
    859 	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
    860 	if (status == 0xff)
    861 		return (0);
    862 
    863 	/* ack the interrupt */
    864 	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
    865 
    866 	if (status & ESA_HV_INT_PENDING) {
    867 		u_int8_t event;
    868 
    869 		printf("%s: hardware volume interrupt\n", sc->sc_dev.dv_xname);
    870 		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
    871 		switch(event) {
    872 		case 0x99:
    873 		case 0xaa:
    874 		case 0x66:
    875 		case 0x88:
    876 			printf("%s: esa_intr: FIXME\n", sc->sc_dev.dv_xname);
    877 			break;
    878 		default:
    879 			printf("%s: unknown hwvol event 0x%02x\n",
    880 			    sc->sc_dev.dv_xname, event);
    881 			break;
    882 		}
    883 		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
    884 	}
    885 
    886 	if (status & ESA_ASSP_INT_PENDING) {
    887 		ctl = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_B);
    888 		if (!(ctl & ESA_STOP_ASSP_CLOCK)) {
    889 			ctl = bus_space_read_1(iot, ioh,
    890 					       ESA_ASSP_HOST_INT_STATUS);
    891 			if (ctl & ESA_DSP2HOST_REQ_TIMER) {
    892 				bus_space_write_1(iot, ioh,
    893 				    ESA_ASSP_HOST_INT_STATUS,
    894 				    ESA_DSP2HOST_REQ_TIMER);
    895 				for (i = 0; i < ESA_NUM_VOICES; i++) {
    896 					vc = &sc->voice[i];
    897 					if (vc->play.active) {
    898 						play_blksize = vc->play.blksize;
    899 						play_bufsize = vc->play.bufsize;
    900 						pos = esa_get_pointer(sc, &vc->play)
    901 						    % play_bufsize;
    902 						diff = (play_bufsize + pos - vc->play.pos)
    903 						    % play_bufsize;
    904 						vc->play.pos = pos;
    905 						vc->play.count += diff;
    906 						while(vc->play.count >= play_blksize) {
    907 							vc->play.count -= play_blksize;
    908 							(*vc->play.intr)(vc->play.arg);
    909 						}
    910 					}
    911 					if (vc->rec.active) {
    912 						rec_blksize = vc->rec.blksize;
    913 						rec_bufsize = vc->rec.bufsize;
    914 						pos = esa_get_pointer(sc, &vc->rec)
    915 						    % rec_bufsize;
    916 						diff = (rec_bufsize + pos - vc->rec.pos)
    917 						    % rec_bufsize;
    918 						vc->rec.pos = pos;
    919 						vc->rec.count += diff;
    920 						while(vc->rec.count >= rec_blksize) {
    921 							vc->rec.count -= rec_blksize;
    922 							(*vc->rec.intr)(vc->rec.arg);
    923 						}
    924 					}
    925 				}
    926 			}
    927 		}
    928 	}
    929 
    930 	return (1);
    931 }
    932 
    933 int
    934 esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
    935 		struct esa_dma *p)
    936 {
    937 	int error;
    938 
    939 	p->size = size;
    940 	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
    941 				 p->segs, sizeof(p->segs) / sizeof(p->segs[0]),
    942 				 &p->nsegs, BUS_DMA_NOWAIT);
    943 	if (error)
    944 		return (error);
    945 
    946 	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
    947 				&p->addr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
    948 	if (error)
    949 		goto free;
    950 
    951 	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
    952 				  BUS_DMA_NOWAIT, &p->map);
    953 	if (error)
    954 		goto unmap;
    955 
    956 	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
    957 				BUS_DMA_NOWAIT);
    958 	if (error)
    959 		goto destroy;
    960 
    961 	return (0);
    962 
    963 destroy:
    964 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    965 unmap:
    966 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    967 free:
    968 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    969 
    970 	return (error);
    971 }
    972 
    973 int
    974 esa_freemem(struct esa_softc *sc, struct esa_dma *p)
    975 {
    976 
    977 	bus_dmamap_unload(sc->sc_dmat, p->map);
    978 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    979 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    980 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    981 
    982 	return (0);
    983 }
    984 
    985 /*
    986  * Supporting Subroutines
    987  */
    988 
    989 int
    990 esa_match(struct device *dev, struct cfdata *match, void *aux)
    991 {
    992 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
    993 
    994 	switch(PCI_VENDOR(pa->pa_id)) {
    995 	case PCI_VENDOR_ESSTECH:
    996 		switch(PCI_PRODUCT(pa->pa_id)) {
    997 		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
    998 		case PCI_PRODUCT_ESSTECH_MAESTRO3:
    999 		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
   1000 			return (1);
   1001 		}
   1002 	}
   1003 
   1004 	return (0);
   1005 }
   1006 
   1007 void
   1008 esa_attach(struct device *parent, struct device *self, void *aux)
   1009 {
   1010 	struct esa_softc *sc = (struct esa_softc *)self;
   1011 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
   1012 	pcitag_t tag = pa->pa_tag;
   1013 	pci_chipset_tag_t pc = pa->pa_pc;
   1014 	pci_intr_handle_t ih;
   1015 	struct esa_card_type *card;
   1016 	const char *intrstr;
   1017 	u_int32_t data;
   1018 	char devinfo[256];
   1019 	int revision, len;
   1020 	int i;
   1021 
   1022 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
   1023 	revision = PCI_REVISION(pa->pa_class);
   1024 	printf(": %s (rev. 0x%02x)\n", devinfo, revision);
   1025 
   1026 	for (card = esa_card_types; card->pci_vendor_id; card++)
   1027 		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
   1028 		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
   1029 			sc->type = card->type;
   1030 			sc->delay1 = card->delay1;
   1031 			sc->delay2 = card->delay2;
   1032 			break;
   1033 		}
   1034 
   1035 	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
   1036 	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
   1037 	    | PCI_COMMAND_MASTER_ENABLE);
   1038 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
   1039 
   1040 	/* Map I/O register */
   1041 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
   1042 	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
   1043 		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
   1044 		return;
   1045 	}
   1046 
   1047 	/* Initialize softc */
   1048 	sc->sc_tag = tag;
   1049 	sc->sc_pct = pc;
   1050 	sc->sc_dmat = pa->pa_dmat;
   1051 
   1052 	/* Map and establish an interrupt */
   1053 	if (pci_intr_map(pa, &ih)) {
   1054 		printf("%s: can't map interrupt\n", sc->sc_dev.dv_xname);
   1055 		return;
   1056 	}
   1057 	intrstr = pci_intr_string(pc, ih);
   1058 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, esa_intr, self);
   1059 	if (sc->sc_ih == NULL) {
   1060 		printf("%s: can't establish interrupt", sc->sc_dev.dv_xname);
   1061 		if (intrstr != NULL)
   1062 			printf(" at %s", intrstr);
   1063 		printf("\n");
   1064 		return;
   1065 	}
   1066 	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
   1067 
   1068 	/* Power up chip */
   1069 	esa_power(sc, PCI_PMCSR_STATE_D0);
   1070 
   1071 	/* Init chip */
   1072 	if (esa_init(sc) == -1) {
   1073 		printf("%s: esa_attach: unable to initialize the card\n",
   1074 		    sc->sc_dev.dv_xname);
   1075 		return;
   1076 	}
   1077 
   1078 	/* create suspend save area */
   1079 	len = sizeof(u_int16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
   1080 	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
   1081 	sc->savemem = (u_int16_t *)malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
   1082 	if (sc->savemem == NULL) {
   1083 		printf("%s: unable to allocate suspend buffer\n",
   1084 		    sc->sc_dev.dv_xname);
   1085 		return;
   1086 	}
   1087 
   1088 	/*
   1089 	 * Every card I've seen has had their channels swapped with respect
   1090 	 * to the mixer. Ie:
   1091 	 *  $ mixerctl -w outputs.master=0,191
   1092 	 * Would result in the _right_ speaker being turned off.
   1093 	 *
   1094 	 * So, we will swap the left and right mixer channels to compensate
   1095 	 * for this.
   1096 	 */
   1097 	sc->codec_flags |= AC97_HOST_SWAPPED_CHANNELS;
   1098 	sc->codec_flags |= AC97_HOST_DONT_READ;
   1099 
   1100 	/* Attach AC97 host interface */
   1101 	sc->host_if.arg = self;
   1102 	sc->host_if.attach = esa_attach_codec;
   1103 	sc->host_if.read = esa_read_codec;
   1104 	sc->host_if.write = esa_write_codec;
   1105 	sc->host_if.reset = esa_reset_codec;
   1106 	sc->host_if.flags = esa_flags_codec;
   1107 
   1108 	if (ac97_attach(&sc->host_if) != 0)
   1109 		return;
   1110 
   1111 	/* initialize list management structures */
   1112 	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
   1113 	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
   1114 	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
   1115 	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
   1116 	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
   1117 	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
   1118 	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
   1119 	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
   1120 
   1121 	/* initialize index maps */
   1122 	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
   1123 		sc->mixer_list.indexmap[i] = -1;
   1124 		sc->msrc_list.indexmap[i] = -1;
   1125 		sc->dma_list.indexmap[i] = -1;
   1126 		sc->adc1_list.indexmap[i] = -1;
   1127 	}
   1128 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1129 		sc->voice[i].parent = (struct device *)sc;
   1130 		sc->voice[i].index = i;
   1131 		sc->sc_audiodev[i] =
   1132 		    audio_attach_mi(&esa_hw_if, &sc->voice[i], &sc->sc_dev);
   1133 	}
   1134 
   1135 	sc->powerhook = powerhook_establish(esa_powerhook, sc);
   1136 	if (sc->powerhook == NULL)
   1137 		printf("%s: WARNING: unable to establish powerhook\n",
   1138 		    sc->sc_dev.dv_xname);
   1139 
   1140 	return;
   1141 }
   1142 
   1143 int
   1144 esa_detach(struct device *self, int flags)
   1145 {
   1146 	struct esa_softc *sc = (struct esa_softc *)self;
   1147 	int i;
   1148 
   1149 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1150 		if (sc->sc_audiodev[i] != NULL)
   1151 			config_detach(sc->sc_audiodev[i], flags);
   1152 	}
   1153 
   1154 	if (sc->sc_ih != NULL)
   1155 		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
   1156 	if (sc->sc_ios)
   1157 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
   1158 
   1159 	free(sc->savemem, M_DEVBUF);
   1160 
   1161 	return (0);
   1162 }
   1163 
   1164 u_int16_t
   1165 esa_read_assp(struct esa_softc *sc, u_int16_t region, u_int16_t index)
   1166 {
   1167 	u_int16_t data;
   1168 	bus_space_tag_t iot = sc->sc_iot;
   1169 	bus_space_handle_t ioh = sc->sc_ioh;
   1170 
   1171 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1172 	    region & ESA_MEMTYPE_MASK);
   1173 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1174 	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
   1175 
   1176 	return (data);
   1177 }
   1178 
   1179 void
   1180 esa_write_assp(struct esa_softc *sc, u_int16_t region, u_int16_t index,
   1181 		u_int16_t data)
   1182 {
   1183 	bus_space_tag_t iot = sc->sc_iot;
   1184 	bus_space_handle_t ioh = sc->sc_ioh;
   1185 
   1186 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1187 	    region & ESA_MEMTYPE_MASK);
   1188 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1189 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
   1190 
   1191 	return;
   1192 }
   1193 
   1194 int
   1195 esa_init_codec(struct esa_softc *sc)
   1196 {
   1197 	bus_space_tag_t iot = sc->sc_iot;
   1198 	bus_space_handle_t ioh = sc->sc_ioh;
   1199 	u_int32_t data;
   1200 
   1201 	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
   1202 
   1203 	return ((data & 0x1) ? 0 : 1);
   1204 }
   1205 
   1206 int
   1207 esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
   1208 {
   1209 	struct esa_softc *sc = aux;
   1210 
   1211 	sc->codec_if = codec_if;
   1212 
   1213 	return (0);
   1214 }
   1215 
   1216 int
   1217 esa_read_codec(void *aux, u_int8_t reg, u_int16_t *result)
   1218 {
   1219 	struct esa_softc *sc = aux;
   1220 	bus_space_tag_t iot = sc->sc_iot;
   1221 	bus_space_handle_t ioh = sc->sc_ioh;
   1222 
   1223 	if (esa_wait(sc))
   1224 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
   1225 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
   1226 	delay(50);
   1227 	if (esa_wait(sc))
   1228 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
   1229 	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
   1230 
   1231 	return (0);
   1232 }
   1233 
   1234 int
   1235 esa_write_codec(void *aux, u_int8_t reg, u_int16_t data)
   1236 {
   1237 	struct esa_softc *sc = aux;
   1238 	bus_space_tag_t iot = sc->sc_iot;
   1239 	bus_space_handle_t ioh = sc->sc_ioh;
   1240 
   1241 	if (esa_wait(sc)) {
   1242 		printf("%s: esa_write_codec: timed out\n", sc->sc_dev.dv_xname);
   1243 		return (-1);
   1244 	}
   1245 	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
   1246 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
   1247 	delay(50);
   1248 
   1249 	return (0);
   1250 }
   1251 
   1252 void
   1253 esa_reset_codec(void *aux)
   1254 {
   1255 
   1256 	return;
   1257 }
   1258 
   1259 enum ac97_host_flags
   1260 esa_flags_codec(void *aux)
   1261 {
   1262 	struct esa_softc *sc = aux;
   1263 
   1264 	return (sc->codec_flags);
   1265 }
   1266 
   1267 int
   1268 esa_wait(struct esa_softc *sc)
   1269 {
   1270 	int i, val;
   1271 	bus_space_tag_t iot = sc->sc_iot;
   1272 	bus_space_handle_t ioh = sc->sc_ioh;
   1273 
   1274 	for (i = 0; i < 20; i++) {
   1275 		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
   1276 		if ((val & 1) == 0)
   1277 			return (0);
   1278 		delay(2);
   1279 	}
   1280 
   1281 	return (-1);
   1282 }
   1283 
   1284 int
   1285 esa_init(struct esa_softc *sc)
   1286 {
   1287 	struct esa_voice *vc;
   1288 	bus_space_tag_t iot = sc->sc_iot;
   1289 	bus_space_handle_t ioh = sc->sc_ioh;
   1290 	pcitag_t tag = sc->sc_tag;
   1291 	pci_chipset_tag_t pc = sc->sc_pct;
   1292 	u_int32_t data, i, size;
   1293 	u_int8_t reset_state;
   1294 	int data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
   1295 			   (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
   1296 			   (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
   1297 			   &~ 255;
   1298 
   1299 	/* Disable legacy emulation */
   1300 	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
   1301 	data |= DISABLE_LEGACY;
   1302 	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
   1303 
   1304 	esa_config(sc);
   1305 
   1306 	reset_state = esa_assp_halt(sc);
   1307 
   1308 	esa_init_codec(sc);
   1309 	esa_codec_reset(sc);
   1310 
   1311 	/* Zero kernel and mixer data */
   1312 	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
   1313 	for (i = 0; i < size / 2; i++) {
   1314 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1315 		    ESA_KDATA_BASE_ADDR + i, 0);
   1316 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1317 		    ESA_KDATA_BASE_ADDR2 + i, 0);
   1318 	}
   1319 
   1320 	/* Init DMA pointer */
   1321 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
   1322 	    ESA_KDATA_DMA_XFER0);
   1323 
   1324 	/* Write kernel code into memory */
   1325 	size = sizeof(esa_assp_kernel_image);
   1326 	for (i = 0; i < size / 2; i++)
   1327 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1328 		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
   1329 
   1330 	size = sizeof(esa_assp_minisrc_image);
   1331 	for (i = 0; i < size / 2; i++)
   1332 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
   1333 		    esa_assp_minisrc_image[i]);
   1334 
   1335 	/* Write the coefficients for the low pass filter */
   1336 	size = sizeof(esa_minisrc_lpf_image);
   1337 	for (i = 0; i < size / 2; i++)
   1338 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1339 		    0x400 + ESA_MINISRC_COEF_LOC + i, esa_minisrc_lpf_image[i]);
   1340 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1341 	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
   1342 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
   1343 	/* Init the mixer number */
   1344 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1345              ESA_KDATA_MIXER_TASK_NUMBER, 0);
   1346 	/* Extreme kernel master volume */
   1347 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1348 	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
   1349 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1350             ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
   1351 
   1352 	if (esa_amp_enable(sc))
   1353 		return (-1);
   1354 
   1355 	/* Zero entire DAC/ADC area */
   1356 	for (i = 0x1100; i < 0x1c00; i++)
   1357 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
   1358 
   1359 	/* set some sane defaults */
   1360 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1361 		vc = &sc->voice[i];
   1362 		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
   1363 		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
   1364 	}
   1365 
   1366 	esa_enable_interrupts(sc);
   1367 
   1368 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1369 	    reset_state | ESA_REGB_ENABLE_RESET);
   1370 
   1371 	return (0);
   1372 }
   1373 
   1374 void
   1375 esa_config(struct esa_softc *sc)
   1376 {
   1377 	bus_space_tag_t iot = sc->sc_iot;
   1378 	bus_space_handle_t ioh = sc->sc_ioh;
   1379 	pcitag_t tag = sc->sc_tag;
   1380 	pci_chipset_tag_t pc = sc->sc_pct;
   1381 	u_int32_t data;
   1382 
   1383 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1384 	data &= ESA_REDUCED_DEBOUNCE;
   1385 	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
   1386 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1387 
   1388 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
   1389 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1390 	data &= ~ESA_INT_CLK_SELECT;
   1391 	if (sc->type == ESS_MAESTRO3) {
   1392 		data &= ~ESA_INT_CLK_MULT_ENABLE;
   1393 		data |= ESA_INT_CLK_SRC_NOT_PCI;
   1394 	}
   1395 	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
   1396 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1397 
   1398 	if (sc->type == ESS_ALLEGRO1) {
   1399 		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
   1400 		data |= ESA_IN_CLK_12MHZ_SELECT;
   1401 		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
   1402 	}
   1403 
   1404 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
   1405 	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
   1406 	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
   1407 	data |= ESA_ASSP_0_WS_ENABLE;
   1408 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
   1409 
   1410 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
   1411 
   1412 	return;
   1413 }
   1414 
   1415 u_int8_t
   1416 esa_assp_halt(struct esa_softc *sc)
   1417 {
   1418 	bus_space_tag_t iot = sc->sc_iot;
   1419 	bus_space_handle_t ioh = sc->sc_ioh;
   1420 	u_int8_t data, reset_state;
   1421 
   1422 	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
   1423 	reset_state = data & ~ESA_REGB_STOP_CLOCK;
   1424 	delay(10000);		/* XXX use tsleep */
   1425 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1426 			reset_state & ~ESA_REGB_ENABLE_RESET);
   1427 	delay(10000);		/* XXX use tsleep */
   1428 
   1429 	return (reset_state);
   1430 }
   1431 
   1432 void
   1433 esa_codec_reset(struct esa_softc *sc)
   1434 {
   1435 	bus_space_tag_t iot = sc->sc_iot;
   1436 	bus_space_handle_t ioh = sc->sc_ioh;
   1437 	u_int16_t data, dir;
   1438 	int retry = 0;
   1439 
   1440 	do {
   1441 		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1442 		dir = data | 0x10; /* assuming pci bus master? */
   1443 
   1444 		/* remote codec config */
   1445 		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
   1446 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
   1447 		    data & ~ESA_SECOND_CODEC_ID_MASK);
   1448 		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
   1449 		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
   1450 		    data & ~ESA_COMMAND_ADDR_OUT);
   1451 		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
   1452 		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
   1453 		    data & ~ESA_STATUS_ADDR_IN);
   1454 
   1455 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1456 				  ESA_IO_SRAM_ENABLE);
   1457 		delay(20);
   1458 
   1459 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1460 		    dir & ~ESA_GPO_PRIMARY_AC97);
   1461 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
   1462 				  ~ESA_GPO_PRIMARY_AC97);
   1463 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
   1464 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1465 		    dir | ESA_GPO_PRIMARY_AC97);
   1466 		delay(sc->delay1 * 1000);
   1467 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
   1468 				  ESA_GPO_PRIMARY_AC97);
   1469 		delay(5);
   1470 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1471 		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
   1472 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1473 		delay(sc->delay2 * 1000);
   1474 
   1475 		esa_read_codec(sc, 0x7c, &data);
   1476 		if ((data == 0) || (data == 0xffff)) {
   1477 			retry++;
   1478 			if (retry > 3) {
   1479 				printf("%s: esa_codec_reset: failed\n",
   1480 				    sc->sc_dev.dv_xname);
   1481 				break;
   1482 			}
   1483 			printf("%s: esa_codec_reset: retrying\n",
   1484 			    sc->sc_dev.dv_xname);
   1485 		} else
   1486 			retry = 0;
   1487 	} while (retry);
   1488 
   1489 	return;
   1490 }
   1491 
   1492 int
   1493 esa_amp_enable(struct esa_softc *sc)
   1494 {
   1495 	bus_space_tag_t iot = sc->sc_iot;
   1496 	bus_space_handle_t ioh = sc->sc_ioh;
   1497 	u_int32_t gpo, polarity_port, polarity;
   1498 	u_int16_t data;
   1499 
   1500 	switch (sc->type) {
   1501 	case ESS_ALLEGRO1:
   1502 		polarity_port = 0x1800;
   1503 		break;
   1504 	case ESS_MAESTRO3:
   1505 		polarity_port = 0x1100;
   1506 		break;
   1507 	default:
   1508 		printf("%s: esa_amp_enable: Unknown chip type!!!\n",
   1509 		    sc->sc_dev.dv_xname);
   1510 		return (1);
   1511 	}
   1512 
   1513 	gpo = (polarity_port >> 8) & 0x0f;
   1514 	polarity = polarity_port >> 12;
   1515 	polarity = !polarity;	/* Enable */
   1516 	polarity = polarity << gpo;
   1517 	gpo = 1 << gpo;
   1518 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
   1519 	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1520 	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
   1521 	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
   1522 	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
   1523 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1524 
   1525 	return (0);
   1526 }
   1527 
   1528 void
   1529 esa_enable_interrupts(struct esa_softc *sc)
   1530 {
   1531 	bus_space_tag_t iot = sc->sc_iot;
   1532 	bus_space_handle_t ioh = sc->sc_ioh;
   1533 	u_int8_t data;
   1534 
   1535 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
   1536 	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
   1537 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
   1538 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
   1539 	    data | ESA_ASSP_HOST_INT_ENABLE);
   1540 }
   1541 
   1542 /*
   1543  * List management
   1544  */
   1545 int
   1546 esa_add_list(struct esa_voice *vc, struct esa_list *el,
   1547 	     u_int16_t val, int index)
   1548 {
   1549 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
   1550 
   1551 	el->indexmap[index] = el->currlen;
   1552 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1553 		       el->mem_addr + el->currlen,
   1554 		       val);
   1555 
   1556 	return (el->currlen++);
   1557 }
   1558 
   1559 void
   1560 esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
   1561 {
   1562 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
   1563 	u_int16_t val;
   1564 	int lastindex = el->currlen - 1;
   1565 	int vindex = el->indexmap[index];
   1566 	int i;
   1567 
   1568 	/* reset our virtual index */
   1569 	el->indexmap[index] = -1;
   1570 
   1571 	if (vindex != lastindex) {
   1572 		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1573 				    el->mem_addr + lastindex);
   1574 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1575 			       el->mem_addr + vindex,
   1576 			       val);
   1577 		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
   1578 			if (el->indexmap[i] == lastindex)
   1579 				break;
   1580 		if (i >= ESA_NUM_VOICES * 2)
   1581 			printf("%s: esa_remove_list: invalid task index\n",
   1582 			       sc->sc_dev.dv_xname);
   1583 		else
   1584 			el->indexmap[i] = vindex;
   1585 	}
   1586 
   1587 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1588 		       el->mem_addr + lastindex, 0);
   1589 	el->currlen--;
   1590 
   1591 	return;
   1592 }
   1593 
   1594 int
   1595 esa_power(struct esa_softc *sc, int state)
   1596 {
   1597 	pcitag_t tag = sc->sc_tag;
   1598 	pci_chipset_tag_t pc = sc->sc_pct;
   1599 	pcireg_t data;
   1600 	int pmcapreg;
   1601 
   1602 	if (pci_get_capability(pc, tag, PCI_CAP_PWRMGMT, &pmcapreg, 0)) {
   1603 		data = pci_conf_read(pc, tag, pmcapreg + 4);
   1604 		if ((data && PCI_PMCSR_STATE_MASK) != state)
   1605 			pci_conf_write(pc, tag, pmcapreg + 4, state);
   1606 	}
   1607 
   1608 	return (0);
   1609 }
   1610 
   1611 void
   1612 esa_powerhook(int why, void *hdl)
   1613 {
   1614 	struct esa_softc *sc = (struct esa_softc *)hdl;
   1615 
   1616 	switch (why) {
   1617 	case PWR_SUSPEND:
   1618 	case PWR_STANDBY:
   1619 		esa_suspend(sc);
   1620 		break;
   1621 	case PWR_RESUME:
   1622 		esa_resume(sc);
   1623 		(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
   1624 		break;
   1625 	}
   1626 }
   1627 
   1628 int
   1629 esa_suspend(struct esa_softc *sc)
   1630 {
   1631 	bus_space_tag_t iot = sc->sc_iot;
   1632 	bus_space_handle_t ioh = sc->sc_ioh;
   1633 	int x, i, index;
   1634 
   1635 	index = 0;
   1636 
   1637 	x = splaudio();
   1638 	for (i = 0; i < ESA_NUM_VOICES; i++)
   1639 		esa_halt_output(&sc->voice[i]);
   1640 	delay(10000);
   1641 	splx(x);
   1642 
   1643 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
   1644 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
   1645 
   1646 	esa_assp_halt(sc);
   1647 
   1648 	/* Save ASSP state */
   1649 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1650 	    i++)
   1651 		sc->savemem[index++] = esa_read_assp(sc,
   1652 		    ESA_MEMTYPE_INTERNAL_CODE, i);
   1653 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1654 	    i++)
   1655 		sc->savemem[index++] = esa_read_assp(sc,
   1656 		    ESA_MEMTYPE_INTERNAL_DATA, i);
   1657 
   1658 	esa_power(sc, PCI_PMCSR_STATE_D3);
   1659 
   1660 	return (0);
   1661 }
   1662 
   1663 int
   1664 esa_resume(struct esa_softc *sc) {
   1665 	bus_space_tag_t iot = sc->sc_iot;
   1666 	bus_space_handle_t ioh = sc->sc_ioh;
   1667 	int i, index;
   1668 	u_int8_t reset_state;
   1669 
   1670 	index = 0;
   1671 
   1672 	esa_power(sc, PCI_PMCSR_STATE_D0);
   1673 	delay(10000);
   1674 
   1675 	esa_config(sc);
   1676 
   1677 	reset_state = esa_assp_halt(sc);
   1678 
   1679 	esa_codec_reset(sc);
   1680 
   1681 	/* restore ASSP */
   1682 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1683 	    i++)
   1684 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
   1685 		    sc->savemem[index++]);
   1686 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1687 	    i++)
   1688 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
   1689 		    sc->savemem[index++]);
   1690 
   1691 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
   1692 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1693 	    reset_state | ESA_REGB_ENABLE_RESET);
   1694 
   1695 	esa_enable_interrupts(sc);
   1696 	esa_amp_enable(sc);
   1697 
   1698 	return (0);
   1699 }
   1700 
   1701 u_int32_t
   1702 esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
   1703 {
   1704 	u_int16_t hi = 0, lo = 0;
   1705 	u_int32_t addr;
   1706 	int data_offset = ch->data_offset;
   1707 
   1708 	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1709 	    ESA_CDATA_HOST_SRC_CURRENTH);
   1710 	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1711 	    ESA_CDATA_HOST_SRC_CURRENTL);
   1712 
   1713 	addr = lo | ((u_int32_t)hi << 16);
   1714 	return (addr - ch->start);
   1715 }
   1716 
   1717 paddr_t
   1718 esa_mappage(void *addr, void *mem, off_t off, int prot)
   1719 {
   1720 	struct esa_voice *vc = addr;
   1721 	struct esa_softc *sc = (struct esa_softc *)vc->parent;
   1722 	struct esa_dma *p;
   1723 
   1724 	if (off < 0)
   1725 		return (-1);
   1726 	for (p = vc->dma; p && KERNADDR(p) != mem; p = p->next)
   1727 		;
   1728 	if (!p)
   1729 		return (-1);
   1730 	return (bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs,
   1731 				off, prot, BUS_DMA_WAITOK));
   1732 }
   1733