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esa.c revision 1.44
      1 /* $NetBSD: esa.c,v 1.44 2008/01/27 01:57:03 jmcneill Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2001, 2002, 2006 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/cdefs.h>
     42 __KERNEL_RCSID(0, "$NetBSD: esa.c,v 1.44 2008/01/27 01:57:03 jmcneill Exp $");
     43 
     44 #include <sys/types.h>
     45 #include <sys/errno.h>
     46 #include <sys/null.h>
     47 #include <sys/param.h>
     48 #include <sys/systm.h>
     49 #include <sys/malloc.h>
     50 #include <sys/device.h>
     51 #include <sys/conf.h>
     52 #include <sys/exec.h>
     53 #include <sys/select.h>
     54 #include <sys/audioio.h>
     55 
     56 #include <sys/bus.h>
     57 #include <sys/intr.h>
     58 
     59 #include <dev/pci/pcidevs.h>
     60 #include <dev/pci/pcivar.h>
     61 
     62 #include <dev/audio_if.h>
     63 #include <dev/mulaw.h>
     64 #include <dev/auconv.h>
     65 #include <dev/ic/ac97var.h>
     66 #include <dev/ic/ac97reg.h>
     67 
     68 #include <dev/pci/esareg.h>
     69 #include <dev/pci/esadsp.h>
     70 #include <dev/pci/esavar.h>
     71 
     72 #define PCI_CBIO	0x10
     73 
     74 #define ESA_DAC_DATA	0x1100
     75 
     76 enum {
     77 	ESS_ALLEGRO1,
     78 	ESS_MAESTRO3
     79 };
     80 
     81 static const struct esa_card_type {
     82 	uint16_t pci_vendor_id;
     83 	uint16_t pci_product_id;
     84 	int type;
     85 	int delay1, delay2;
     86 } esa_card_types[] = {
     87 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_ALLEGRO1,
     88 	  ESS_ALLEGRO1, 50, 800 },
     89 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3,
     90 	  ESS_MAESTRO3, 20, 500 },
     91 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3_2,
     92 	  ESS_MAESTRO3, 20, 500 },
     93 	{ 0, 0, 0, 0, 0 }
     94 };
     95 
     96 static struct audio_device esa_device = {
     97 	"ESS Allegro",
     98 	"",
     99 	"esa"
    100 };
    101 
    102 static int		esa_match(struct device *, struct cfdata *, void *);
    103 static void		esa_attach(struct device *, struct device *, void *);
    104 static int		esa_detach(struct device *, int);
    105 
    106 /* audio(9) functions */
    107 static int		esa_query_encoding(void *, struct audio_encoding *);
    108 static int		esa_set_params(void *, int, int, audio_params_t *,
    109 				       audio_params_t *, stream_filter_list_t *,
    110 				       stream_filter_list_t *);
    111 static int		esa_round_blocksize(void *, int, int,
    112 					    const audio_params_t *);
    113 static int		esa_commit_settings(void *);
    114 static int		esa_halt_output(void *);
    115 static int		esa_halt_input(void *);
    116 static int		esa_set_port(void *, mixer_ctrl_t *);
    117 static int		esa_get_port(void *, mixer_ctrl_t *);
    118 static int		esa_query_devinfo(void *, mixer_devinfo_t *);
    119 static void *		esa_malloc(void *, int, size_t, struct malloc_type *,
    120 				   int);
    121 static void		esa_free(void *, void *, struct malloc_type *);
    122 static int		esa_getdev(void *, struct audio_device *);
    123 static size_t		esa_round_buffersize(void *, int, size_t);
    124 static int		esa_get_props(void *);
    125 static int		esa_trigger_output(void *, void *, void *, int,
    126 					   void (*)(void *), void *,
    127 					   const audio_params_t *);
    128 static int		esa_trigger_input(void *, void *, void *, int,
    129 					  void (*)(void *), void *,
    130 					  const audio_params_t *);
    131 
    132 static int		esa_intr(void *);
    133 static int		esa_allocmem(struct esa_softc *, size_t, size_t,
    134 				     struct esa_dma *);
    135 static int		esa_freemem(struct esa_softc *, struct esa_dma *);
    136 static paddr_t		esa_mappage(void *, void *, off_t, int);
    137 
    138 /* Supporting subroutines */
    139 static uint16_t		esa_read_assp(struct esa_softc *, uint16_t, uint16_t);
    140 static void		esa_write_assp(struct esa_softc *, uint16_t, uint16_t,
    141 				       uint16_t);
    142 static int		esa_init_codec(struct esa_softc *);
    143 static int		esa_attach_codec(void *, struct ac97_codec_if *);
    144 static int		esa_read_codec(void *, uint8_t, uint16_t *);
    145 static int		esa_write_codec(void *, uint8_t, uint16_t);
    146 static int		esa_reset_codec(void *);
    147 static enum ac97_host_flags	esa_flags_codec(void *);
    148 static int		esa_wait(struct esa_softc *);
    149 static int		esa_init(struct esa_softc *);
    150 static void		esa_config(struct esa_softc *);
    151 static uint8_t		esa_assp_halt(struct esa_softc *);
    152 static void		esa_codec_reset(struct esa_softc *);
    153 static int		esa_amp_enable(struct esa_softc *);
    154 static void		esa_enable_interrupts(struct esa_softc *);
    155 static uint32_t		esa_get_pointer(struct esa_softc *,
    156 					struct esa_channel *);
    157 
    158 /* list management */
    159 static int		esa_add_list(struct esa_voice *, struct esa_list *,
    160 				     uint16_t, int);
    161 static void		esa_remove_list(struct esa_voice *, struct esa_list *,
    162 					int);
    163 
    164 /* power management */
    165 static bool		esa_suspend(device_t);
    166 static bool		esa_resume(device_t);
    167 
    168 
    169 #define ESA_NENCODINGS 8
    170 static audio_encoding_t esa_encoding[ESA_NENCODINGS] = {
    171 	{ 0, AudioEulinear, AUDIO_ENCODING_ULINEAR, 8, 0 },
    172 	{ 1, AudioEmulaw, AUDIO_ENCODING_ULAW, 8,
    173 		AUDIO_ENCODINGFLAG_EMULATED },
    174 	{ 2, AudioEalaw, AUDIO_ENCODING_ALAW, 8, AUDIO_ENCODINGFLAG_EMULATED },
    175 	{ 3, AudioEslinear, AUDIO_ENCODING_SLINEAR, 8,
    176 		AUDIO_ENCODINGFLAG_EMULATED }, /* XXX: Are you sure? */
    177 	{ 4, AudioEslinear_le, AUDIO_ENCODING_SLINEAR_LE, 16, 0 },
    178 	{ 5, AudioEulinear_le, AUDIO_ENCODING_ULINEAR_LE, 16,
    179 		AUDIO_ENCODINGFLAG_EMULATED },
    180 	{ 6, AudioEslinear_be, AUDIO_ENCODING_SLINEAR_BE, 16,
    181 		AUDIO_ENCODINGFLAG_EMULATED },
    182 	{ 7, AudioEulinear_be, AUDIO_ENCODING_ULINEAR_BE, 16,
    183 		AUDIO_ENCODINGFLAG_EMULATED }
    184 };
    185 
    186 #define ESA_NFORMATS	4
    187 static const struct audio_format esa_formats[ESA_NFORMATS] = {
    188 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    189 	 2, AUFMT_STEREO, 0, {ESA_MINRATE, ESA_MAXRATE}},
    190 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    191 	 1, AUFMT_MONAURAL, 0, {ESA_MINRATE, ESA_MAXRATE}},
    192 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
    193 	 2, AUFMT_STEREO, 0, {ESA_MINRATE, ESA_MAXRATE}},
    194 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
    195 	 1, AUFMT_MONAURAL, 0, {ESA_MINRATE, ESA_MAXRATE}},
    196 };
    197 
    198 static const struct audio_hw_if esa_hw_if = {
    199 	NULL,			/* open */
    200 	NULL,			/* close */
    201 	NULL,			/* drain */
    202 	esa_query_encoding,
    203 	esa_set_params,
    204 	esa_round_blocksize,
    205 	esa_commit_settings,
    206 	NULL,			/* init_output */
    207 	NULL,			/* init_input */
    208 	NULL,			/* start_output */
    209 	NULL,			/* start_input */
    210 	esa_halt_output,
    211 	esa_halt_input,
    212 	NULL,			/* speaker_ctl */
    213 	esa_getdev,
    214 	NULL,			/* getfd */
    215 	esa_set_port,
    216 	esa_get_port,
    217 	esa_query_devinfo,
    218 	esa_malloc,
    219 	esa_free,
    220 	esa_round_buffersize,
    221 	esa_mappage,
    222 	esa_get_props,
    223 	esa_trigger_output,
    224 	esa_trigger_input,
    225 	NULL,	/* dev_ioctl */
    226 	NULL,	/* powerstate */
    227 };
    228 
    229 CFATTACH_DECL(esa, sizeof(struct esa_softc), esa_match, esa_attach,
    230     esa_detach, NULL);
    231 
    232 /*
    233  * audio(9) functions
    234  */
    235 
    236 static int
    237 esa_query_encoding(void *hdl, struct audio_encoding *ae)
    238 {
    239 
    240 	if (ae->index < 0 || ae->index >= ESA_NENCODINGS)
    241 		return EINVAL;
    242 	*ae = esa_encoding[ae->index];
    243 
    244 	return 0;
    245 }
    246 
    247 static int
    248 esa_set_params(void *hdl, int setmode, int usemode,
    249     audio_params_t *play, audio_params_t *rec, stream_filter_list_t *pfil,
    250     stream_filter_list_t *rfil)
    251 {
    252 	struct esa_voice *vc;
    253 	struct esa_channel *ch;
    254 	struct audio_params *p;
    255 	stream_filter_list_t *fil;
    256 	int mode, i;
    257 
    258 	vc = hdl;
    259 	for (mode = AUMODE_RECORD; mode != -1;
    260 	     mode = (mode == AUMODE_RECORD) ? AUMODE_PLAY : -1) {
    261 		if ((setmode & mode) == 0)
    262 			continue;
    263 
    264 		switch (mode) {
    265 		case AUMODE_PLAY:
    266 			p = play;
    267 			ch = &vc->play;
    268 			fil = pfil;
    269 			break;
    270 		case AUMODE_RECORD:
    271 			p = rec;
    272 			ch = &vc->rec;
    273 			fil = rfil;
    274 			break;
    275 		default:
    276 			return EINVAL;
    277 		}
    278 
    279 		if (p->sample_rate < ESA_MINRATE ||
    280 		    p->sample_rate > ESA_MAXRATE ||
    281 		    (p->precision != 8 && p->precision != 16) ||
    282 		    (p->channels < 1 || p->channels > 2))
    283 			return EINVAL;
    284 
    285 		i = auconv_set_converter(esa_formats, ESA_NFORMATS,
    286 					 mode, p, FALSE, fil);
    287 		if (i < 0)
    288 			return EINVAL;
    289 		if (fil->req_size > 0)
    290 			p = &fil->filters[0].param;
    291 		ch->mode = *p;
    292 	}
    293 
    294 	return 0;
    295 }
    296 
    297 static int
    298 esa_commit_settings(void *hdl)
    299 {
    300 	struct esa_voice *vc;
    301 	struct esa_softc *sc;
    302 	const audio_params_t *p;
    303 	const audio_params_t *r;
    304 	uint32_t data;
    305 	uint32_t freq;
    306 	int data_bytes;
    307 
    308 	vc = hdl;
    309 	sc = (struct esa_softc *)vc->parent;
    310 	p = &vc->play.mode;
    311 	r = &vc->rec.mode;
    312 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    313 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    314 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
    315 	    &~ 255;
    316 	/* playback */
    317 	vc->play.data_offset = ESA_DAC_DATA + (data_bytes * vc->index);
    318 	if (p->channels == 1)
    319 		data = 1;
    320 	else
    321 		data = 0;
    322 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    323 		       vc->play.data_offset + ESA_SRC3_MODE_OFFSET,
    324 		       data);
    325 	if (p->precision  == 8)
    326 		data = 1;
    327 	else
    328 		data = 0;
    329 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    330 		       vc->play.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
    331 		       data);
    332 	if ((freq = ((p->sample_rate << 15) + 24000) / 48000) != 0) {
    333 		freq--;
    334 	}
    335 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    336 		       vc->play.data_offset + ESA_CDATA_FREQUENCY, freq);
    337 
    338 	/* recording */
    339 	vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * vc->index) +
    340 			      (data_bytes / 2);
    341 	if (r->channels == 1)
    342 		data = 1;
    343 	else
    344 		data = 0;
    345 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    346 		       vc->rec.data_offset + ESA_SRC3_MODE_OFFSET,
    347 		       data);
    348 	if (r->precision == 8)
    349 		data = 1;
    350 	else
    351 		data = 0;
    352 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    353 		       vc->rec.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
    354 		       data);
    355 	if ((freq = ((r->sample_rate << 15) + 24000) / 48000) != 0) {
    356 		freq--;
    357 	}
    358 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    359 		       vc->rec.data_offset + ESA_CDATA_FREQUENCY, freq);
    360 
    361 	return 0;
    362 };
    363 
    364 static int
    365 esa_round_blocksize(void *hdl, int bs, int mode,
    366     const audio_params_t *param)
    367 {
    368 
    369 	return bs & ~0x20;	/* Be conservative; align to 32 bytes */
    370 }
    371 
    372 static int
    373 esa_halt_output(void *hdl)
    374 {
    375 	struct esa_voice *vc;
    376 	struct esa_softc *sc;
    377 	bus_space_tag_t iot;
    378 	bus_space_handle_t ioh;
    379 	uint16_t data;
    380 
    381 	vc = hdl;
    382 	sc = (struct esa_softc *)vc->parent;
    383 	iot = sc->sc_iot;
    384 	ioh = sc->sc_ioh;
    385 	if (vc->play.active == 0)
    386 		return 0;
    387 
    388 	vc->play.active = 0;
    389 
    390 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    391 		       ESA_CDATA_INSTANCE_READY + vc->play.data_offset, 0);
    392 
    393 	sc->sc_ntimers--;
    394 	if (sc->sc_ntimers == 0) {
    395 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    396 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
    397 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    398 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
    399 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    400 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    401 		    data & ~ESA_CLKRUN_GEN_ENABLE);
    402 	}
    403 
    404 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    405 		       ESA_KDATA_MIXER_TASK_NUMBER,
    406 		       sc->mixer_list.indexmap[vc->index]);
    407 	/* remove ourselves from the packed lists */
    408 	esa_remove_list(vc, &sc->mixer_list, vc->index);
    409 	esa_remove_list(vc, &sc->dma_list, vc->index);
    410 	esa_remove_list(vc, &sc->msrc_list, vc->index);
    411 
    412 	return 0;
    413 }
    414 
    415 static int
    416 esa_halt_input(void *hdl)
    417 {
    418 	struct esa_voice *vc;
    419 	struct esa_softc *sc;
    420 	bus_space_tag_t iot;
    421 	bus_space_handle_t ioh;
    422 	uint32_t data;
    423 
    424 	vc = hdl;
    425 	sc = (struct esa_softc *)vc->parent;
    426 	iot = sc->sc_iot;
    427 	ioh = sc->sc_ioh;
    428 	if (vc->rec.active == 0)
    429 		return 0;
    430 
    431 	vc->rec.active = 0;
    432 
    433 	sc->sc_ntimers--;
    434 	if (sc->sc_ntimers == 0) {
    435 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    436 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
    437 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    438 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
    439 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    440 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    441 				  data & ~ESA_CLKRUN_GEN_ENABLE);
    442 	}
    443 
    444 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, vc->rec.data_offset +
    445 		       ESA_CDATA_INSTANCE_READY, 0);
    446 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
    447 		       0);
    448 
    449 	/* remove ourselves from the packed lists */
    450 	esa_remove_list(vc, &sc->adc1_list, vc->index + ESA_NUM_VOICES);
    451 	esa_remove_list(vc, &sc->dma_list, vc->index + ESA_NUM_VOICES);
    452 	esa_remove_list(vc, &sc->msrc_list, vc->index + ESA_NUM_VOICES);
    453 
    454 	return 0;
    455 }
    456 
    457 static void *
    458 esa_malloc(void *hdl, int direction, size_t size,
    459     struct malloc_type *type, int flags)
    460 {
    461 	struct esa_voice *vc;
    462 	struct esa_softc *sc;
    463 	struct esa_dma *p;
    464 	int error;
    465 
    466 	p = malloc(sizeof(*p), type, flags);
    467 	if (p == NULL)
    468 		return NULL;
    469 	vc = hdl;
    470 	sc = (struct esa_softc *)vc->parent;
    471 	error = esa_allocmem(sc, size, 16, p);
    472 	if (error) {
    473 		free(p, type);
    474 		printf("%s: esa_malloc: not enough memory\n",
    475 		    sc->sc_dev.dv_xname);
    476 		return 0;
    477 	}
    478 	p->next = vc->dma;
    479 	vc->dma = p;
    480 
    481 	return KERNADDR(p);
    482 }
    483 
    484 static void
    485 esa_free(void *hdl, void *addr, struct malloc_type *type)
    486 {
    487 	struct esa_voice *vc;
    488 	struct esa_softc *sc;
    489 	struct esa_dma *p;
    490 	struct esa_dma **pp;
    491 
    492 	vc = hdl;
    493 	sc = (struct esa_softc *)vc->parent;
    494 	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
    495 		if (KERNADDR(p) == addr) {
    496 			esa_freemem(sc, p);
    497 			*pp = p->next;
    498 			free(p, type);
    499 			return;
    500 		}
    501 }
    502 
    503 static int
    504 esa_getdev(void *hdl, struct audio_device *ret)
    505 {
    506 
    507 	*ret = esa_device;
    508 	return 0;
    509 }
    510 
    511 static int
    512 esa_set_port(void *hdl, mixer_ctrl_t *mc)
    513 {
    514 	struct esa_voice *vc;
    515 	struct esa_softc *sc;
    516 
    517 	vc = hdl;
    518 	sc = (struct esa_softc *)vc->parent;
    519 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc);
    520 }
    521 
    522 static int
    523 esa_get_port(void *hdl, mixer_ctrl_t *mc)
    524 {
    525 	struct esa_voice *vc;
    526 	struct esa_softc *sc;
    527 
    528 	vc = hdl;
    529 	sc = (struct esa_softc *)vc->parent;
    530 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc);
    531 }
    532 
    533 static int
    534 esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
    535 {
    536 	struct esa_voice *vc;
    537 	struct esa_softc *sc;
    538 
    539 	vc = hdl;
    540 	sc = (struct esa_softc *)vc->parent;
    541 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, di);
    542 }
    543 
    544 static size_t
    545 esa_round_buffersize(void *hdl, int direction, size_t bufsize)
    546 {
    547 
    548 	return bufsize;
    549 }
    550 
    551 static int
    552 esa_get_props(void *hdl)
    553 {
    554 
    555 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
    556 }
    557 
    558 static int
    559 esa_trigger_output(void *hdl, void *start, void *end, int blksize,
    560     void (*intr)(void *), void *intrarg, const audio_params_t *param)
    561 {
    562 	struct esa_voice *vc;
    563 	struct esa_softc *sc;
    564 	struct esa_dma *p;
    565 	bus_space_tag_t iot;
    566 	bus_space_handle_t ioh;
    567 	size_t size;
    568 	uint32_t data, bufaddr, i;
    569 	int data_bytes, dac_data, dsp_in_size;
    570 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
    571 
    572 	vc = hdl;
    573 	sc = (struct esa_softc *)vc->parent;
    574 	iot = sc->sc_iot;
    575 	ioh = sc->sc_ioh;
    576 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    577 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    578 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
    579 	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
    580 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
    581 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
    582 	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    583 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    584 
    585 	if (vc->play.active)
    586 		return EINVAL;
    587 
    588 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    589 		continue;
    590 	if (p == NULL) {
    591 		printf("%s: esa_trigger_output: bad addr %p\n",
    592 		    sc->sc_dev.dv_xname, start);
    593 		return EINVAL;
    594 	}
    595 
    596 	vc->play.active = 1;
    597 	vc->play.intr = intr;
    598 	vc->play.arg = intrarg;
    599 	vc->play.pos = 0;
    600 	vc->play.count = 0;
    601 	vc->play.buf = start;
    602 	vc->play.bufsize = size = (size_t)(((char *)end - (char *)start));
    603 	vc->play.blksize = blksize;
    604 	bufaddr = DMAADDR(p);
    605 	vc->play.start = bufaddr;
    606 
    607 #define LO(x) ((x) & 0x0000ffff)
    608 #define HI(x) ((x) >> 16)
    609 
    610 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    611 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    612 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    613 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    614 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    615 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    616 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    617 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    618 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    619 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    620 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    621 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    622 
    623 	/* DSP buffers */
    624 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    625 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    626 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    627 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    628 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    629 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    630 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    631 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    632 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    633 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    634 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    635 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    636 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    637 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    638 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    639 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    640 
    641 	/* Some per-client initializers */
    642 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    643 	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
    644 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    645 	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
    646 	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
    647 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    648 	    ESA_SRC3_DIRECTION_OFFSET + 22,
    649 	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
    650 	/* Tell it which way DMA is going */
    651 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    652 	    ESA_CDATA_DMA_CONTROL,
    653 	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
    654 	    ESA_DMAC_BLOCKF_SELECTOR);
    655 
    656 	/* Set an armload of static initializers */
    657 	for (i = 0; i < (sizeof(esa_playvals) / sizeof(esa_playvals[0])); i++)
    658 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    659 		    esa_playvals[i].addr, esa_playvals[i].val);
    660 
    661 	/* Put us in the packed task lists */
    662 	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
    663 		     vc->index);
    664 	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
    665 		     vc->index);
    666 	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
    667 		     vc->index);
    668 #undef LO
    669 #undef HI
    670 
    671 	sc->sc_ntimers++;
    672 
    673 	if (sc->sc_ntimers == 1) {
    674 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    675 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    676 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    677 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    678 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    679 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    680 		    data | ESA_CLKRUN_GEN_ENABLE);
    681 	}
    682 
    683 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    684 	    ESA_CDATA_INSTANCE_READY, 1);
    685 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    686 	    ESA_KDATA_MIXER_TASK_NUMBER,
    687 	    sc->mixer_list.indexmap[vc->index]);
    688 
    689 	return 0;
    690 }
    691 
    692 static int
    693 esa_trigger_input(void *hdl, void *start, void *end, int blksize,
    694     void (*intr)(void *), void *intrarg, const audio_params_t *param)
    695 {
    696 	struct esa_voice *vc;
    697 	struct esa_softc *sc;
    698 	struct esa_dma *p;
    699 	bus_space_tag_t iot;
    700 	bus_space_handle_t ioh;
    701 	uint32_t data, bufaddr, i;
    702 	size_t size;
    703 	int data_bytes, adc_data, dsp_in_size;
    704 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
    705 
    706 	vc = hdl;
    707 	sc = (struct esa_softc *)vc->parent;
    708 	iot = sc->sc_iot;
    709 	ioh = sc->sc_ioh;
    710 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    711 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    712 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
    713 	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
    714 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
    715 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
    716 	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    717 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    718 
    719 	vc->rec.data_offset = adc_data;
    720 
    721 	/* We only support 1 recording channel */
    722 	if (vc->index > 0)
    723 		return ENODEV;
    724 
    725 	if (vc->rec.active)
    726 		return EINVAL;
    727 
    728 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    729 		continue;
    730 	if (p == NULL) {
    731 		printf("%s: esa_trigger_input: bad addr %p\n",
    732 		    sc->sc_dev.dv_xname, start);
    733 		return EINVAL;
    734 	}
    735 
    736 	vc->rec.active = 1;
    737 	vc->rec.intr = intr;
    738 	vc->rec.arg = intrarg;
    739 	vc->rec.pos = 0;
    740 	vc->rec.count = 0;
    741 	vc->rec.buf = start;
    742 	vc->rec.bufsize = size = (size_t)(((char *)end - (char *)start));
    743 	vc->rec.blksize = blksize;
    744 	bufaddr = DMAADDR(p);
    745 	vc->rec.start = bufaddr;
    746 
    747 #define LO(x) ((x) & 0x0000ffff)
    748 #define HI(x) ((x) >> 16)
    749 
    750 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    751 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    752 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    753 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    754 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    755 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    756 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    757 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    758 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    759 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    760 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    761 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    762 
    763 	/* DSP buffers */
    764 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    765 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    766 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    767 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    768 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    769 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    770 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    771 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    772 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    773 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    774 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    775 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    776 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    777 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    778 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    779 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    780 
    781 	/* Some per-client initializers */
    782 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    783 	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
    784 	/* Tell it which way DMA is going */
    785 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    786 	    ESA_CDATA_DMA_CONTROL,
    787 	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
    788 	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
    789 
    790 	/* Set an armload of static initializers */
    791 	for (i = 0; i < (sizeof(esa_recvals) / sizeof(esa_recvals[0])); i++)
    792 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    793 		    esa_recvals[i].addr, esa_recvals[i].val);
    794 
    795 	/* Put us in the packed task lists */
    796 	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
    797 		     vc->index + ESA_NUM_VOICES);
    798 	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
    799 		     vc->index + ESA_NUM_VOICES);
    800 	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
    801 		     vc->index + ESA_NUM_VOICES);
    802 #undef LO
    803 #undef HI
    804 
    805 	sc->sc_ntimers++;
    806 	if (sc->sc_ntimers == 1) {
    807 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    808 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    809 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    810 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    811 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    812 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    813 		    data | ESA_CLKRUN_GEN_ENABLE);
    814 	}
    815 
    816 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    817 	    ESA_CDATA_INSTANCE_READY, 1);
    818 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
    819 	    1);
    820 
    821 	return 0;
    822 }
    823 
    824 /* Interrupt handler */
    825 static int
    826 esa_intr(void *hdl)
    827 {
    828 	struct esa_softc *sc;
    829 	struct esa_voice *vc;
    830 	bus_space_tag_t iot;
    831 	bus_space_handle_t ioh;
    832 	uint8_t status;
    833 	uint32_t pos;
    834 	uint32_t diff;
    835 	uint32_t blksize;
    836 	int i;
    837 
    838 	sc = hdl;
    839 	iot = sc->sc_iot;
    840 	ioh = sc->sc_ioh;
    841 
    842 	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
    843 	if (status == 0xff)
    844 		return 0;
    845 
    846 	/* ack the interrupt */
    847 	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
    848 
    849 	if (status & ESA_HV_INT_PENDING) {
    850 		uint8_t event;
    851 
    852 		printf("%s: hardware volume interrupt\n", sc->sc_dev.dv_xname);
    853 		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
    854 		switch(event) {
    855 		case 0x99:
    856 		case 0xaa:
    857 		case 0x66:
    858 		case 0x88:
    859 			printf("%s: esa_intr: FIXME\n", sc->sc_dev.dv_xname);
    860 			break;
    861 		default:
    862 			printf("%s: unknown hwvol event 0x%02x\n",
    863 			    sc->sc_dev.dv_xname, event);
    864 			break;
    865 		}
    866 		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
    867 	}
    868 
    869 	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
    870 	    (bus_space_read_1(iot, ioh,
    871 	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
    872 	    (bus_space_read_1(iot, ioh,
    873 	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0)
    874 		return 1;
    875 
    876 	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
    877 	    ESA_DSP2HOST_REQ_TIMER);
    878 
    879 	for (i = 0; i < ESA_NUM_VOICES; i++) {
    880 		vc = &sc->voice[i];
    881 
    882 		if (vc->play.active) {
    883 			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
    884 			diff = (vc->play.bufsize + pos - vc->play.pos) %
    885 			    vc->play.bufsize;
    886 
    887 			vc->play.pos = pos;
    888 			vc->play.count += diff;
    889 			blksize = vc->play.blksize;
    890 
    891 			while (vc->play.count >= blksize) {
    892 				vc->play.count -= blksize;
    893 				(*vc->play.intr)(vc->play.arg);
    894 			}
    895 		}
    896 
    897 		if (vc->rec.active) {
    898 			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
    899 			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
    900 			    vc->rec.bufsize;
    901 
    902 			vc->rec.pos = pos;
    903 			vc->rec.count += diff;
    904 			blksize = vc->rec.blksize;
    905 
    906 			while (vc->rec.count >= blksize) {
    907 				vc->rec.count -= blksize;
    908 				(*vc->rec.intr)(vc->rec.arg);
    909 			}
    910 		}
    911 	}
    912 
    913 	return 1;
    914 }
    915 
    916 static int
    917 esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
    918 	     struct esa_dma *p)
    919 {
    920 	int error;
    921 
    922 	p->size = size;
    923 	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
    924 				 p->segs, sizeof(p->segs) / sizeof(p->segs[0]),
    925 				 &p->nsegs, BUS_DMA_NOWAIT);
    926 	if (error)
    927 		return error;
    928 
    929 	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
    930 				&p->addr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
    931 	if (error)
    932 		goto free;
    933 
    934 	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
    935 				  BUS_DMA_NOWAIT, &p->map);
    936 	if (error)
    937 		goto unmap;
    938 
    939 	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
    940 				BUS_DMA_NOWAIT);
    941 	if (error)
    942 		goto destroy;
    943 
    944 	return 0;
    945 
    946 destroy:
    947 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    948 unmap:
    949 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    950 free:
    951 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    952 
    953 	return error;
    954 }
    955 
    956 static int
    957 esa_freemem(struct esa_softc *sc, struct esa_dma *p)
    958 {
    959 
    960 	bus_dmamap_unload(sc->sc_dmat, p->map);
    961 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    962 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    963 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    964 
    965 	return 0;
    966 }
    967 
    968 /*
    969  * Supporting Subroutines
    970  */
    971 
    972 static int
    973 esa_match(struct device *dev, struct cfdata *match, void *aux)
    974 {
    975 	struct pci_attach_args *pa;
    976 
    977 	pa = (struct pci_attach_args *)aux;
    978 	switch (PCI_VENDOR(pa->pa_id)) {
    979 	case PCI_VENDOR_ESSTECH:
    980 		switch(PCI_PRODUCT(pa->pa_id)) {
    981 		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
    982 		case PCI_PRODUCT_ESSTECH_MAESTRO3:
    983 		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
    984 			return 1;
    985 		}
    986 	}
    987 
    988 	return 0;
    989 }
    990 
    991 static void
    992 esa_attach(struct device *parent, struct device *self, void *aux)
    993 {
    994 	struct esa_softc *sc;
    995 	struct pci_attach_args *pa;
    996 	pcitag_t tag;
    997 	pci_chipset_tag_t pc;
    998 	pci_intr_handle_t ih;
    999 	const struct esa_card_type *card;
   1000 	const char *intrstr;
   1001 	uint32_t data;
   1002 	char devinfo[256];
   1003 	int revision, len;
   1004 	int i;
   1005 	int error;
   1006 
   1007 	sc = (struct esa_softc *)self;
   1008 	pa = (struct pci_attach_args *)aux;
   1009 	tag = pa->pa_tag;
   1010 	pc = pa->pa_pc;
   1011 	aprint_naive(": Audio controller\n");
   1012 
   1013 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
   1014 	revision = PCI_REVISION(pa->pa_class);
   1015 	aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision);
   1016 
   1017 	for (card = esa_card_types; card->pci_vendor_id; card++)
   1018 		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
   1019 		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
   1020 			sc->type = card->type;
   1021 			sc->delay1 = card->delay1;
   1022 			sc->delay2 = card->delay2;
   1023 			break;
   1024 		}
   1025 
   1026 	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
   1027 	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
   1028 	    | PCI_COMMAND_MASTER_ENABLE);
   1029 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
   1030 
   1031 	/* Map I/O register */
   1032 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
   1033 	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
   1034 		aprint_error("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
   1035 		return;
   1036 	}
   1037 
   1038 	/* Initialize softc */
   1039 	sc->sc_tag = tag;
   1040 	sc->sc_pct = pc;
   1041 	sc->sc_dmat = pa->pa_dmat;
   1042 
   1043 	/* Map and establish an interrupt */
   1044 	if (pci_intr_map(pa, &ih)) {
   1045 		aprint_error("%s: can't map interrupt\n", sc->sc_dev.dv_xname);
   1046 		return;
   1047 	}
   1048 	intrstr = pci_intr_string(pc, ih);
   1049 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, esa_intr, self);
   1050 	if (sc->sc_ih == NULL) {
   1051 		aprint_error("%s: can't establish interrupt",
   1052 		    sc->sc_dev.dv_xname);
   1053 		if (intrstr != NULL)
   1054 			aprint_normal(" at %s", intrstr);
   1055 		aprint_normal("\n");
   1056 		return;
   1057 	}
   1058 	aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
   1059 
   1060 	/* power up chip */
   1061 	if ((error = pci_activate(pa->pa_pc, pa->pa_tag, sc,
   1062 	    pci_activate_null)) && error != EOPNOTSUPP) {
   1063 		aprint_error("%s: cannot activate %d\n", sc->sc_dev.dv_xname,
   1064 		    error);
   1065 		return;
   1066 	}
   1067 
   1068 	/* Init chip */
   1069 	if (esa_init(sc) == -1) {
   1070 		aprint_error("%s: esa_attach: unable to initialize the card\n",
   1071 		    sc->sc_dev.dv_xname);
   1072 		return;
   1073 	}
   1074 
   1075 	/* create suspend save area */
   1076 	len = sizeof(uint16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
   1077 	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
   1078 	sc->savemem = (uint16_t *)malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
   1079 	if (sc->savemem == NULL) {
   1080 		aprint_error("%s: unable to allocate suspend buffer\n",
   1081 		    sc->sc_dev.dv_xname);
   1082 		return;
   1083 	}
   1084 
   1085 	/*
   1086 	 * Every card I've seen has had their channels swapped with respect
   1087 	 * to the mixer. Ie:
   1088 	 *  $ mixerctl -w outputs.master=0,191
   1089 	 * Would result in the _right_ speaker being turned off.
   1090 	 *
   1091 	 * So, we will swap the left and right mixer channels to compensate
   1092 	 * for this.
   1093 	 *
   1094 	 * XXX PR# 23620: The Dell C810 channels are not swapped. Match
   1095 	 *     on revision ID for now; this is probably wrong.
   1096 	 */
   1097 	if (revision == 0x10 && sc->type == ESS_MAESTRO3)
   1098 		sc->codec_flags = 0;
   1099 	else
   1100 		sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
   1101 
   1102 
   1103 	/* Attach AC97 host interface */
   1104 	sc->host_if.arg = self;
   1105 	sc->host_if.attach = esa_attach_codec;
   1106 	sc->host_if.read = esa_read_codec;
   1107 	sc->host_if.write = esa_write_codec;
   1108 	sc->host_if.reset = esa_reset_codec;
   1109 	sc->host_if.flags = esa_flags_codec;
   1110 
   1111 	if (ac97_attach(&sc->host_if, self) != 0)
   1112 		return;
   1113 
   1114 	/* initialize list management structures */
   1115 	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
   1116 	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
   1117 	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
   1118 	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
   1119 	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
   1120 	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
   1121 	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
   1122 	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
   1123 
   1124 	/* initialize index maps */
   1125 	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
   1126 		sc->mixer_list.indexmap[i] = -1;
   1127 		sc->msrc_list.indexmap[i] = -1;
   1128 		sc->dma_list.indexmap[i] = -1;
   1129 		sc->adc1_list.indexmap[i] = -1;
   1130 	}
   1131 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1132 		sc->voice[i].parent = (struct device *)sc;
   1133 		sc->voice[i].index = i;
   1134 		sc->sc_audiodev[i] =
   1135 		    audio_attach_mi(&esa_hw_if, &sc->voice[i], &sc->sc_dev);
   1136 	}
   1137 
   1138 	if (!pmf_device_register(self, esa_suspend, esa_resume))
   1139 		aprint_error_dev(self, "couldn't establish power handler\n");
   1140 
   1141 	return;
   1142 }
   1143 
   1144 static int
   1145 esa_detach(struct device *self, int flags)
   1146 {
   1147 	struct esa_softc *sc;
   1148 	int i;
   1149 
   1150 	sc = (struct esa_softc *)self;
   1151 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1152 		if (sc->sc_audiodev[i] != NULL)
   1153 			config_detach(sc->sc_audiodev[i], flags);
   1154 	}
   1155 
   1156 	if (sc->sc_ih != NULL)
   1157 		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
   1158 	if (sc->sc_ios)
   1159 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
   1160 
   1161 	free(sc->savemem, M_DEVBUF);
   1162 
   1163 	return 0;
   1164 }
   1165 
   1166 static uint16_t
   1167 esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
   1168 {
   1169 	uint16_t data;
   1170 	bus_space_tag_t iot;
   1171 	bus_space_handle_t ioh;
   1172 
   1173 	iot = sc->sc_iot;
   1174 	ioh = sc->sc_ioh;
   1175 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1176 	    region & ESA_MEMTYPE_MASK);
   1177 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1178 	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
   1179 
   1180 	return data;
   1181 }
   1182 
   1183 static void
   1184 esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
   1185 	       uint16_t data)
   1186 {
   1187 	bus_space_tag_t iot;
   1188 	bus_space_handle_t ioh;
   1189 
   1190 	iot = sc->sc_iot;
   1191 	ioh = sc->sc_ioh;
   1192 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1193 	    region & ESA_MEMTYPE_MASK);
   1194 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1195 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
   1196 
   1197 	return;
   1198 }
   1199 
   1200 static int
   1201 esa_init_codec(struct esa_softc *sc)
   1202 {
   1203 	bus_space_tag_t iot;
   1204 	bus_space_handle_t ioh;
   1205 	uint32_t data;
   1206 
   1207 	iot = sc->sc_iot;
   1208 	ioh = sc->sc_ioh;
   1209 	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
   1210 
   1211 	return (data & 0x1) ? 0 : 1;
   1212 }
   1213 
   1214 static int
   1215 esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
   1216 {
   1217 	struct esa_softc *sc;
   1218 
   1219 	sc = aux;
   1220 	sc->codec_if = codec_if;
   1221 
   1222 	return 0;
   1223 }
   1224 
   1225 static int
   1226 esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
   1227 {
   1228 	struct esa_softc *sc;
   1229 	bus_space_tag_t iot;
   1230 	bus_space_handle_t ioh;
   1231 
   1232 	sc = aux;
   1233 	iot = sc->sc_iot;
   1234 	ioh = sc->sc_ioh;
   1235 	if (esa_wait(sc))
   1236 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
   1237 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
   1238 	delay(50);
   1239 	if (esa_wait(sc))
   1240 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
   1241 	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
   1242 
   1243 	return 0;
   1244 }
   1245 
   1246 static int
   1247 esa_write_codec(void *aux, uint8_t reg, uint16_t data)
   1248 {
   1249 	struct esa_softc *sc;
   1250 	bus_space_tag_t iot;
   1251 	bus_space_handle_t ioh;
   1252 
   1253 	sc = aux;
   1254 	iot = sc->sc_iot;
   1255 	ioh = sc->sc_ioh;
   1256 	if (esa_wait(sc)) {
   1257 		printf("%s: esa_write_codec: timed out\n", sc->sc_dev.dv_xname);
   1258 		return -1;
   1259 	}
   1260 	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
   1261 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
   1262 	delay(50);
   1263 
   1264 	return 0;
   1265 }
   1266 
   1267 static int
   1268 esa_reset_codec(void *aux)
   1269 {
   1270 
   1271 	return 0;
   1272 }
   1273 
   1274 static enum ac97_host_flags
   1275 esa_flags_codec(void *aux)
   1276 {
   1277 	struct esa_softc *sc;
   1278 
   1279 	sc = aux;
   1280 	return sc->codec_flags;
   1281 }
   1282 
   1283 static int
   1284 esa_wait(struct esa_softc *sc)
   1285 {
   1286 	int i, val;
   1287 	bus_space_tag_t iot;
   1288 	bus_space_handle_t ioh;
   1289 
   1290 	iot = sc->sc_iot;
   1291 	ioh = sc->sc_ioh;
   1292 	for (i = 0; i < 20; i++) {
   1293 		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
   1294 		if ((val & 1) == 0)
   1295 			return 0;
   1296 		delay(2);
   1297 	}
   1298 
   1299 	return -1;
   1300 }
   1301 
   1302 static int
   1303 esa_init(struct esa_softc *sc)
   1304 {
   1305 	struct esa_voice *vc;
   1306 	bus_space_tag_t iot;
   1307 	bus_space_handle_t ioh;
   1308 	pcitag_t tag;
   1309 	pci_chipset_tag_t pc;
   1310 	uint32_t data, i, size;
   1311 	uint8_t reset_state;
   1312 	int data_bytes;
   1313 
   1314 	iot = sc->sc_iot;
   1315 	ioh = sc->sc_ioh;
   1316 	tag = sc->sc_tag;
   1317 	pc = sc->sc_pct;
   1318 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
   1319 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
   1320 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
   1321 
   1322 	/* Disable legacy emulation */
   1323 	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
   1324 	data |= DISABLE_LEGACY;
   1325 	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
   1326 
   1327 	esa_config(sc);
   1328 
   1329 	reset_state = esa_assp_halt(sc);
   1330 
   1331 	esa_init_codec(sc);
   1332 	esa_codec_reset(sc);
   1333 
   1334 	/* Zero kernel and mixer data */
   1335 	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
   1336 	for (i = 0; i < size / 2; i++) {
   1337 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1338 		    ESA_KDATA_BASE_ADDR + i, 0);
   1339 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1340 		    ESA_KDATA_BASE_ADDR2 + i, 0);
   1341 	}
   1342 
   1343 	/* Init DMA pointer */
   1344 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
   1345 	    ESA_KDATA_DMA_XFER0);
   1346 
   1347 	/* Write kernel code into memory */
   1348 	size = sizeof(esa_assp_kernel_image);
   1349 	for (i = 0; i < size / 2; i++)
   1350 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1351 		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
   1352 
   1353 	size = sizeof(esa_assp_minisrc_image);
   1354 	for (i = 0; i < size / 2; i++)
   1355 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
   1356 		    esa_assp_minisrc_image[i]);
   1357 
   1358 	/* Write the coefficients for the low pass filter */
   1359 	size = sizeof(esa_minisrc_lpf_image);
   1360 	for (i = 0; i < size / 2; i++)
   1361 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1362 		    0x400 + ESA_MINISRC_COEF_LOC + i, esa_minisrc_lpf_image[i]);
   1363 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1364 	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
   1365 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
   1366 	/* Init the mixer number */
   1367 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1368 	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
   1369 	/* Extreme kernel master volume */
   1370 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1371 	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
   1372 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1373 	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
   1374 
   1375 	if (esa_amp_enable(sc))
   1376 		return -1;
   1377 
   1378 	/* Zero entire DAC/ADC area */
   1379 	for (i = 0x1100; i < 0x1c00; i++)
   1380 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
   1381 
   1382 	/* set some sane defaults */
   1383 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1384 		vc = &sc->voice[i];
   1385 		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
   1386 		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
   1387 	}
   1388 
   1389 	esa_enable_interrupts(sc);
   1390 
   1391 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1392 	    reset_state | ESA_REGB_ENABLE_RESET);
   1393 
   1394 	return 0;
   1395 }
   1396 
   1397 static void
   1398 esa_config(struct esa_softc *sc)
   1399 {
   1400 	bus_space_tag_t iot;
   1401 	bus_space_handle_t ioh;
   1402 	pcitag_t tag;
   1403 	pci_chipset_tag_t pc;
   1404 	uint32_t data;
   1405 
   1406 	iot = sc->sc_iot;
   1407 	ioh = sc->sc_ioh;
   1408 	tag = sc->sc_tag;
   1409 	pc = sc->sc_pct;
   1410 
   1411 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1412 	data &= ESA_REDUCED_DEBOUNCE;
   1413 	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
   1414 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1415 
   1416 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
   1417 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1418 	data &= ~ESA_INT_CLK_SELECT;
   1419 	if (sc->type == ESS_MAESTRO3) {
   1420 		data &= ~ESA_INT_CLK_MULT_ENABLE;
   1421 		data |= ESA_INT_CLK_SRC_NOT_PCI;
   1422 	}
   1423 	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
   1424 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1425 
   1426 	if (sc->type == ESS_ALLEGRO1) {
   1427 		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
   1428 		data |= ESA_IN_CLK_12MHZ_SELECT;
   1429 		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
   1430 	}
   1431 
   1432 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
   1433 	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
   1434 	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
   1435 	data |= ESA_ASSP_0_WS_ENABLE;
   1436 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
   1437 
   1438 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
   1439 
   1440 	return;
   1441 }
   1442 
   1443 static uint8_t
   1444 esa_assp_halt(struct esa_softc *sc)
   1445 {
   1446 	bus_space_tag_t iot;
   1447 	bus_space_handle_t ioh;
   1448 	uint8_t data, reset_state;
   1449 
   1450 	iot = sc->sc_iot;
   1451 	ioh = sc->sc_ioh;
   1452 	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
   1453 	reset_state = data & ~ESA_REGB_STOP_CLOCK;
   1454 	delay(10000);
   1455 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1456 			reset_state & ~ESA_REGB_ENABLE_RESET);
   1457 	delay(10000);
   1458 
   1459 	return reset_state;
   1460 }
   1461 
   1462 static void
   1463 esa_codec_reset(struct esa_softc *sc)
   1464 {
   1465 	bus_space_tag_t iot;
   1466 	bus_space_handle_t ioh;
   1467 	uint16_t data, dir;
   1468 	int retry;
   1469 
   1470 	iot = sc->sc_iot;
   1471 	ioh = sc->sc_ioh;
   1472 	retry = 0;
   1473 	do {
   1474 		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1475 		dir = data | 0x10; /* assuming pci bus master? */
   1476 
   1477 		/* remote codec config */
   1478 		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
   1479 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
   1480 		    data & ~ESA_SECOND_CODEC_ID_MASK);
   1481 		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
   1482 		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
   1483 		    data & ~ESA_COMMAND_ADDR_OUT);
   1484 		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
   1485 		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
   1486 		    data & ~ESA_STATUS_ADDR_IN);
   1487 
   1488 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1489 				  ESA_IO_SRAM_ENABLE);
   1490 		delay(20);
   1491 
   1492 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1493 		    dir & ~ESA_GPO_PRIMARY_AC97);
   1494 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
   1495 				  ~ESA_GPO_PRIMARY_AC97);
   1496 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
   1497 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1498 		    dir | ESA_GPO_PRIMARY_AC97);
   1499 		delay(sc->delay1 * 1000);
   1500 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
   1501 				  ESA_GPO_PRIMARY_AC97);
   1502 		delay(5);
   1503 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1504 		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
   1505 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1506 		delay(sc->delay2 * 1000);
   1507 
   1508 		esa_read_codec(sc, 0x7c, &data);
   1509 		if ((data == 0) || (data == 0xffff)) {
   1510 			retry++;
   1511 			if (retry > 3) {
   1512 				printf("%s: esa_codec_reset: failed\n",
   1513 				    sc->sc_dev.dv_xname);
   1514 				break;
   1515 			}
   1516 			printf("%s: esa_codec_reset: retrying\n",
   1517 			    sc->sc_dev.dv_xname);
   1518 		} else
   1519 			retry = 0;
   1520 	} while (retry);
   1521 
   1522 	return;
   1523 }
   1524 
   1525 static int
   1526 esa_amp_enable(struct esa_softc *sc)
   1527 {
   1528 	bus_space_tag_t iot;
   1529 	bus_space_handle_t ioh;
   1530 	uint32_t gpo, polarity_port, polarity;
   1531 	uint16_t data;
   1532 
   1533 	iot = sc->sc_iot;
   1534 	ioh = sc->sc_ioh;
   1535 	switch (sc->type) {
   1536 	case ESS_ALLEGRO1:
   1537 		polarity_port = 0x1800;
   1538 		break;
   1539 	case ESS_MAESTRO3:
   1540 		polarity_port = 0x1100;
   1541 		break;
   1542 	default:
   1543 		printf("%s: esa_amp_enable: Unknown chip type!!!\n",
   1544 		    sc->sc_dev.dv_xname);
   1545 		return 1;
   1546 	}
   1547 
   1548 	gpo = (polarity_port >> 8) & 0x0f;
   1549 	polarity = polarity_port >> 12;
   1550 	polarity = !polarity;	/* Enable */
   1551 	polarity = polarity << gpo;
   1552 	gpo = 1 << gpo;
   1553 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
   1554 	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1555 	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
   1556 	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
   1557 	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
   1558 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1559 
   1560 	return 0;
   1561 }
   1562 
   1563 static void
   1564 esa_enable_interrupts(struct esa_softc *sc)
   1565 {
   1566 	bus_space_tag_t iot;
   1567 	bus_space_handle_t ioh;
   1568 	uint8_t data;
   1569 
   1570 	iot = sc->sc_iot;
   1571 	ioh = sc->sc_ioh;
   1572 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
   1573 	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
   1574 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
   1575 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
   1576 	    data | ESA_ASSP_HOST_INT_ENABLE);
   1577 }
   1578 
   1579 /*
   1580  * List management
   1581  */
   1582 static int
   1583 esa_add_list(struct esa_voice *vc, struct esa_list *el,
   1584 	     uint16_t val, int index)
   1585 {
   1586 	struct esa_softc *sc;
   1587 
   1588 	sc = (struct esa_softc *)vc->parent;
   1589 	el->indexmap[index] = el->currlen;
   1590 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1591 		       el->mem_addr + el->currlen,
   1592 		       val);
   1593 
   1594 	return el->currlen++;
   1595 }
   1596 
   1597 static void
   1598 esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
   1599 {
   1600 	struct esa_softc *sc;
   1601 	uint16_t val;
   1602 	int lastindex;
   1603 	int vindex;
   1604 	int i;
   1605 
   1606 	sc = (struct esa_softc *)vc->parent;
   1607 	lastindex = el->currlen - 1;
   1608 	vindex = el->indexmap[index];
   1609 
   1610 	/* reset our virtual index */
   1611 	el->indexmap[index] = -1;
   1612 
   1613 	if (vindex != lastindex) {
   1614 		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1615 				    el->mem_addr + lastindex);
   1616 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1617 			       el->mem_addr + vindex,
   1618 			       val);
   1619 		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
   1620 			if (el->indexmap[i] == lastindex)
   1621 				break;
   1622 		if (i >= ESA_NUM_VOICES * 2)
   1623 			printf("%s: esa_remove_list: invalid task index\n",
   1624 			       sc->sc_dev.dv_xname);
   1625 		else
   1626 			el->indexmap[i] = vindex;
   1627 	}
   1628 
   1629 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1630 		       el->mem_addr + lastindex, 0);
   1631 	el->currlen--;
   1632 
   1633 	return;
   1634 }
   1635 
   1636 static bool
   1637 esa_suspend(device_t dv)
   1638 {
   1639 	struct esa_softc *sc = device_private(dv);
   1640 	bus_space_tag_t iot = sc->sc_iot;
   1641 	bus_space_handle_t ioh = sc->sc_ioh;
   1642 	int i, index;
   1643 
   1644 	index = 0;
   1645 
   1646 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
   1647 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
   1648 
   1649 	esa_assp_halt(sc);
   1650 
   1651 	/* Save ASSP state */
   1652 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1653 	    i++)
   1654 		sc->savemem[index++] = esa_read_assp(sc,
   1655 		    ESA_MEMTYPE_INTERNAL_CODE, i);
   1656 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1657 	    i++)
   1658 		sc->savemem[index++] = esa_read_assp(sc,
   1659 		    ESA_MEMTYPE_INTERNAL_DATA, i);
   1660 
   1661 	return true;
   1662 }
   1663 
   1664 static bool
   1665 esa_resume(device_t dv)
   1666 {
   1667 	struct esa_softc *sc = device_private(dv);
   1668 	bus_space_tag_t iot = sc->sc_iot;
   1669 	bus_space_handle_t ioh = sc->sc_ioh;
   1670 	int i, index;
   1671 	uint8_t reset_state;
   1672 	pcireg_t data;
   1673 
   1674 	index = 0;
   1675 
   1676 	delay(10000);
   1677 
   1678 	data = pci_conf_read(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL);
   1679 	pci_conf_write(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL,
   1680 	    data | DISABLE_LEGACY);
   1681 
   1682 	bus_space_write_4(iot, ioh, ESA_PCI_ACPI_CONTROL, ESA_PCI_ACPI_D0);
   1683 
   1684 	esa_config(sc);
   1685 
   1686 	reset_state = esa_assp_halt(sc);
   1687 
   1688 	esa_init_codec(sc);
   1689 	esa_codec_reset(sc);
   1690 
   1691 	/* restore ASSP */
   1692 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1693 	    i++)
   1694 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
   1695 		    sc->savemem[index++]);
   1696 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1697 	    i++)
   1698 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
   1699 		    sc->savemem[index++]);
   1700 
   1701 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
   1702 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1703 	    reset_state | ESA_REGB_ENABLE_RESET);
   1704 
   1705 	esa_enable_interrupts(sc);
   1706 	esa_amp_enable(sc);
   1707 
   1708 	/* Finally, power up AC97 codec */
   1709 	delay(1000);
   1710 	sc->codec_if->vtbl->restore_ports(sc->codec_if);
   1711 
   1712 	return true;
   1713 }
   1714 
   1715 static uint32_t
   1716 esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
   1717 {
   1718 	uint16_t hi, lo;
   1719 	uint32_t addr;
   1720 	int data_offset;
   1721 
   1722 	data_offset = ch->data_offset;
   1723 	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1724 	    ESA_CDATA_HOST_SRC_CURRENTH);
   1725 	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1726 	    ESA_CDATA_HOST_SRC_CURRENTL);
   1727 
   1728 	addr = lo | ((uint32_t)hi << 16);
   1729 	return (addr - ch->start);
   1730 }
   1731 
   1732 static paddr_t
   1733 esa_mappage(void *addr, void *mem, off_t off, int prot)
   1734 {
   1735 	struct esa_voice *vc;
   1736 	struct esa_softc *sc;
   1737 	struct esa_dma *p;
   1738 
   1739 	vc = addr;
   1740 	sc = (struct esa_softc *)vc->parent;
   1741 	if (off < 0)
   1742 		return -1;
   1743 	for (p = vc->dma; p && KERNADDR(p) != mem; p = p->next)
   1744 		continue;
   1745 	if (p == NULL)
   1746 		return -1;
   1747 	return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs,
   1748 			       off, prot, BUS_DMA_WAITOK);
   1749 }
   1750