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esa.c revision 1.62
      1 /* $NetBSD: esa.c,v 1.62 2018/12/09 11:14:02 jdolecek Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2001-2008 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 1.62 2018/12/09 11:14:02 jdolecek 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/kmem.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 #include <sys/bus.h>
     56 #include <sys/intr.h>
     57 
     58 #include <dev/audio_if.h>
     59 #include <dev/mulaw.h>
     60 #include <dev/auconv.h>
     61 
     62 #include <dev/ic/ac97var.h>
     63 #include <dev/ic/ac97reg.h>
     64 
     65 #include <dev/pci/pcidevs.h>
     66 #include <dev/pci/pcivar.h>
     67 #include <dev/pci/esareg.h>
     68 #include <dev/pci/esadsp.h>
     69 #include <dev/pci/esavar.h>
     70 
     71 #define PCI_CBIO	0x10
     72 
     73 #define ESA_DAC_DATA	0x1100
     74 
     75 enum {
     76 	ESS_ALLEGRO1,
     77 	ESS_MAESTRO3
     78 };
     79 
     80 static const struct esa_card_type {
     81 	uint16_t pci_vendor_id;
     82 	uint16_t pci_product_id;
     83 	int type;
     84 	int delay1, delay2;
     85 } esa_card_types[] = {
     86 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_ALLEGRO1,
     87 	  ESS_ALLEGRO1, 50, 800 },
     88 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3,
     89 	  ESS_MAESTRO3, 20, 500 },
     90 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3_2,
     91 	  ESS_MAESTRO3, 20, 500 },
     92 	{ 0, 0, 0, 0, 0 }
     93 };
     94 
     95 static struct audio_device esa_device = {
     96 	"ESS Allegro",
     97 	"",
     98 	"esa"
     99 };
    100 
    101 static int		esa_match(device_t, cfdata_t, void *);
    102 static void		esa_attach(device_t, device_t, void *);
    103 static int		esa_detach(device_t, int);
    104 static void		esa_childdet(device_t, device_t);
    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);
    120 static void		esa_free(void *, void *, size_t);
    121 static int		esa_getdev(void *, struct audio_device *);
    122 static size_t		esa_round_buffersize(void *, int, size_t);
    123 static int		esa_get_props(void *);
    124 static int		esa_trigger_output(void *, void *, void *, int,
    125 					   void (*)(void *), void *,
    126 					   const audio_params_t *);
    127 static int		esa_trigger_input(void *, void *, void *, int,
    128 					  void (*)(void *), void *,
    129 					  const audio_params_t *);
    130 static void		esa_get_locks(void *, kmutex_t **, kmutex_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, const pmf_qual_t *);
    166 static bool		esa_resume(device_t, const pmf_qual_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 	esa_get_locks,
    227 };
    228 
    229 CFATTACH_DECL2_NEW(esa, sizeof(struct esa_softc), esa_match, esa_attach,
    230     esa_detach, NULL, NULL, esa_childdet);
    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 = device_private(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 = device_private(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 = device_private(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 {
    460 	struct esa_voice *vc;
    461 	struct esa_softc *sc;
    462 	struct esa_dma *p;
    463 	int error;
    464 
    465 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
    466 	vc = hdl;
    467 	sc = device_private(vc->parent);
    468 	error = esa_allocmem(sc, size, 16, p);
    469 	if (error) {
    470 		kmem_free(p, sizeof(*p));
    471 		aprint_error_dev(sc->sc_dev,
    472 		    "%s: not enough memory\n", __func__);
    473 		return 0;
    474 	}
    475 	p->next = vc->dma;
    476 	vc->dma = p;
    477 
    478 	return KERNADDR(p);
    479 }
    480 
    481 static void
    482 esa_free(void *hdl, void *addr, size_t size)
    483 {
    484 	struct esa_voice *vc;
    485 	struct esa_softc *sc;
    486 	struct esa_dma *p;
    487 	struct esa_dma **pp;
    488 
    489 	vc = hdl;
    490 	sc = device_private(vc->parent);
    491 	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
    492 		if (KERNADDR(p) == addr) {
    493 			esa_freemem(sc, p);
    494 			*pp = p->next;
    495 			kmem_free(p, sizeof(*p));
    496 			return;
    497 		}
    498 }
    499 
    500 static int
    501 esa_getdev(void *hdl, struct audio_device *ret)
    502 {
    503 
    504 	*ret = esa_device;
    505 	return 0;
    506 }
    507 
    508 static int
    509 esa_set_port(void *hdl, mixer_ctrl_t *mc)
    510 {
    511 	struct esa_voice *vc;
    512 	struct esa_softc *sc;
    513 
    514 	vc = hdl;
    515 	sc = device_private(vc->parent);
    516 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc);
    517 }
    518 
    519 static int
    520 esa_get_port(void *hdl, mixer_ctrl_t *mc)
    521 {
    522 	struct esa_voice *vc;
    523 	struct esa_softc *sc;
    524 
    525 	vc = hdl;
    526 	sc = device_private(vc->parent);
    527 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc);
    528 }
    529 
    530 static int
    531 esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
    532 {
    533 	struct esa_voice *vc;
    534 	struct esa_softc *sc;
    535 
    536 	vc = hdl;
    537 	sc = device_private(vc->parent);
    538 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, di);
    539 }
    540 
    541 static size_t
    542 esa_round_buffersize(void *hdl, int direction, size_t bufsize)
    543 {
    544 
    545 	return bufsize;
    546 }
    547 
    548 static int
    549 esa_get_props(void *hdl)
    550 {
    551 
    552 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
    553 }
    554 
    555 static int
    556 esa_trigger_output(void *hdl, void *start, void *end, int blksize,
    557     void (*intr)(void *), void *intrarg, const audio_params_t *param)
    558 {
    559 	struct esa_voice *vc;
    560 	struct esa_softc *sc;
    561 	struct esa_dma *p;
    562 	bus_space_tag_t iot;
    563 	bus_space_handle_t ioh;
    564 	size_t size;
    565 	uint32_t data, bufaddr, i;
    566 	int data_bytes, dac_data, dsp_in_size;
    567 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
    568 
    569 	vc = hdl;
    570 	sc = device_private(vc->parent);
    571 	iot = sc->sc_iot;
    572 	ioh = sc->sc_ioh;
    573 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    574 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    575 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
    576 	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
    577 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
    578 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
    579 	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    580 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    581 
    582 	if (vc->play.active)
    583 		return EINVAL;
    584 
    585 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    586 		continue;
    587 	if (p == NULL) {
    588 		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n", __func__,
    589 		    start);
    590 		return EINVAL;
    591 	}
    592 
    593 	vc->play.active = 1;
    594 	vc->play.intr = intr;
    595 	vc->play.arg = intrarg;
    596 	vc->play.pos = 0;
    597 	vc->play.count = 0;
    598 	vc->play.buf = start;
    599 	vc->play.bufsize = size = (size_t)(((char *)end - (char *)start));
    600 	vc->play.blksize = blksize;
    601 	bufaddr = DMAADDR(p);
    602 	vc->play.start = bufaddr;
    603 
    604 #define LO(x) ((x) & 0x0000ffff)
    605 #define HI(x) ((x) >> 16)
    606 
    607 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    608 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    609 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    610 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    611 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    612 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    613 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    614 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    615 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    616 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    617 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    618 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    619 
    620 	/* DSP buffers */
    621 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    622 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    623 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    624 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    625 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    626 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    627 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    628 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    629 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    630 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    631 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    632 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    633 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    634 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    635 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    636 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    637 
    638 	/* Some per-client initializers */
    639 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    640 	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
    641 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    642 	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
    643 	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
    644 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    645 	    ESA_SRC3_DIRECTION_OFFSET + 22,
    646 	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
    647 	/* Tell it which way DMA is going */
    648 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    649 	    ESA_CDATA_DMA_CONTROL,
    650 	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
    651 	    ESA_DMAC_BLOCKF_SELECTOR);
    652 
    653 	/* Set an armload of static initializers */
    654 	for (i = 0; i < __arraycount(esa_playvals); i++)
    655 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    656 		    esa_playvals[i].addr, esa_playvals[i].val);
    657 
    658 	/* Put us in the packed task lists */
    659 	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
    660 		     vc->index);
    661 	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
    662 		     vc->index);
    663 	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
    664 		     vc->index);
    665 #undef LO
    666 #undef HI
    667 
    668 	sc->sc_ntimers++;
    669 
    670 	if (sc->sc_ntimers == 1) {
    671 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    672 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    673 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    674 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    675 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    676 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    677 		    data | ESA_CLKRUN_GEN_ENABLE);
    678 	}
    679 
    680 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    681 	    ESA_CDATA_INSTANCE_READY, 1);
    682 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    683 	    ESA_KDATA_MIXER_TASK_NUMBER,
    684 	    sc->mixer_list.indexmap[vc->index]);
    685 
    686 	return 0;
    687 }
    688 
    689 static int
    690 esa_trigger_input(void *hdl, void *start, void *end, int blksize,
    691     void (*intr)(void *), void *intrarg, const audio_params_t *param)
    692 {
    693 	struct esa_voice *vc;
    694 	struct esa_softc *sc;
    695 	struct esa_dma *p;
    696 	bus_space_tag_t iot;
    697 	bus_space_handle_t ioh;
    698 	uint32_t data, bufaddr, i;
    699 	size_t size;
    700 	int data_bytes, adc_data, dsp_in_size;
    701 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
    702 
    703 	vc = hdl;
    704 	sc = device_private(vc->parent);
    705 	iot = sc->sc_iot;
    706 	ioh = sc->sc_ioh;
    707 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    708 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    709 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
    710 	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
    711 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
    712 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
    713 	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    714 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    715 
    716 	vc->rec.data_offset = adc_data;
    717 
    718 	/* We only support 1 recording channel */
    719 	if (vc->index > 0)
    720 		return ENODEV;
    721 
    722 	if (vc->rec.active)
    723 		return EINVAL;
    724 
    725 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    726 		continue;
    727 	if (p == NULL) {
    728 		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n",
    729 		    __func__, start);
    730 		return EINVAL;
    731 	}
    732 
    733 	vc->rec.active = 1;
    734 	vc->rec.intr = intr;
    735 	vc->rec.arg = intrarg;
    736 	vc->rec.pos = 0;
    737 	vc->rec.count = 0;
    738 	vc->rec.buf = start;
    739 	vc->rec.bufsize = size = (size_t)(((char *)end - (char *)start));
    740 	vc->rec.blksize = blksize;
    741 	bufaddr = DMAADDR(p);
    742 	vc->rec.start = bufaddr;
    743 
    744 #define LO(x) ((x) & 0x0000ffff)
    745 #define HI(x) ((x) >> 16)
    746 
    747 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    748 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    749 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    750 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    751 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    752 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    753 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    754 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    755 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    756 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    757 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    758 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    759 
    760 	/* DSP buffers */
    761 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    762 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    763 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    764 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    765 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    766 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    767 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    768 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    769 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    770 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    771 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    772 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    773 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    774 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    775 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    776 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    777 
    778 	/* Some per-client initializers */
    779 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    780 	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
    781 	/* Tell it which way DMA is going */
    782 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    783 	    ESA_CDATA_DMA_CONTROL,
    784 	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
    785 	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
    786 
    787 	/* Set an armload of static initializers */
    788 	for (i = 0; i < __arraycount(esa_recvals); i++)
    789 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    790 		    esa_recvals[i].addr, esa_recvals[i].val);
    791 
    792 	/* Put us in the packed task lists */
    793 	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
    794 		     vc->index + ESA_NUM_VOICES);
    795 	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
    796 		     vc->index + ESA_NUM_VOICES);
    797 	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
    798 		     vc->index + ESA_NUM_VOICES);
    799 #undef LO
    800 #undef HI
    801 
    802 	sc->sc_ntimers++;
    803 	if (sc->sc_ntimers == 1) {
    804 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    805 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    806 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    807 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    808 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    809 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    810 		    data | ESA_CLKRUN_GEN_ENABLE);
    811 	}
    812 
    813 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    814 	    ESA_CDATA_INSTANCE_READY, 1);
    815 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
    816 	    1);
    817 
    818 	return 0;
    819 }
    820 
    821 /* Interrupt handler */
    822 static int
    823 esa_intr(void *hdl)
    824 {
    825 	struct esa_softc *sc;
    826 	struct esa_voice *vc;
    827 	bus_space_tag_t iot;
    828 	bus_space_handle_t ioh;
    829 	uint8_t status;
    830 	uint32_t pos;
    831 	uint32_t diff;
    832 	uint32_t blksize;
    833 	int i;
    834 
    835 	sc = hdl;
    836 	mutex_spin_enter(&sc->sc_intr_lock);
    837 
    838 	iot = sc->sc_iot;
    839 	ioh = sc->sc_ioh;
    840 
    841 	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
    842 	if (status == 0xff) {
    843 		mutex_spin_exit(&sc->sc_intr_lock);
    844 		return 0;
    845 	}
    846 
    847 	/* ack the interrupt */
    848 	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
    849 
    850 	if (status & ESA_HV_INT_PENDING) {
    851 		uint8_t event;
    852 
    853 		aprint_normal_dev(sc->sc_dev, "hardware volume interrupt\n");
    854 		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
    855 		switch(event) {
    856 		case 0xaa:	/* volume up */
    857 			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
    858 			break;
    859 		case 0x66:	/* volume down */
    860 			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
    861 			break;
    862 		case 0x88:	/* mute */
    863 			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_TOGGLE);
    864 			break;
    865 		default:
    866 			aprint_normal_dev(sc->sc_dev,
    867 			    "unknown hwvol event 0x%02x\n", event);
    868 			break;
    869 		}
    870 		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
    871 	}
    872 
    873 	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
    874 	    (bus_space_read_1(iot, ioh,
    875 	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
    876 	    (bus_space_read_1(iot, ioh,
    877 	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0) {
    878 		mutex_spin_exit(&sc->sc_intr_lock);
    879 		return 1;
    880 	}
    881 
    882 	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
    883 	    ESA_DSP2HOST_REQ_TIMER);
    884 
    885 	for (i = 0; i < ESA_NUM_VOICES; i++) {
    886 		vc = &sc->voice[i];
    887 
    888 		if (vc->play.active) {
    889 			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
    890 			diff = (vc->play.bufsize + pos - vc->play.pos) %
    891 			    vc->play.bufsize;
    892 
    893 			vc->play.pos = pos;
    894 			vc->play.count += diff;
    895 			blksize = vc->play.blksize;
    896 
    897 			while (vc->play.count >= blksize) {
    898 				vc->play.count -= blksize;
    899 				(*vc->play.intr)(vc->play.arg);
    900 			}
    901 		}
    902 
    903 		if (vc->rec.active) {
    904 			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
    905 			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
    906 			    vc->rec.bufsize;
    907 
    908 			vc->rec.pos = pos;
    909 			vc->rec.count += diff;
    910 			blksize = vc->rec.blksize;
    911 
    912 			while (vc->rec.count >= blksize) {
    913 				vc->rec.count -= blksize;
    914 				(*vc->rec.intr)(vc->rec.arg);
    915 			}
    916 		}
    917 	}
    918 
    919 	mutex_spin_exit(&sc->sc_intr_lock);
    920 	return 1;
    921 }
    922 
    923 static int
    924 esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
    925 	     struct esa_dma *p)
    926 {
    927 	int error;
    928 
    929 	p->size = size;
    930 	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
    931 				 p->segs, __arraycount(p->segs),
    932 				 &p->nsegs, BUS_DMA_WAITOK);
    933 	if (error)
    934 		return error;
    935 
    936 	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
    937 				&p->addr, BUS_DMA_WAITOK | BUS_DMA_COHERENT);
    938 	if (error)
    939 		goto free;
    940 
    941 	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
    942 				  BUS_DMA_WAITOK, &p->map);
    943 	if (error)
    944 		goto unmap;
    945 
    946 	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
    947 				BUS_DMA_WAITOK);
    948 	if (error)
    949 		goto destroy;
    950 
    951 	return 0;
    952 
    953 destroy:
    954 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    955 unmap:
    956 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    957 free:
    958 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    959 
    960 	return error;
    961 }
    962 
    963 static int
    964 esa_freemem(struct esa_softc *sc, struct esa_dma *p)
    965 {
    966 
    967 	bus_dmamap_unload(sc->sc_dmat, p->map);
    968 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    969 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    970 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    971 
    972 	return 0;
    973 }
    974 
    975 /*
    976  * Supporting Subroutines
    977  */
    978 
    979 static int
    980 esa_match(device_t dev, cfdata_t match, void *aux)
    981 {
    982 	struct pci_attach_args *pa;
    983 
    984 	pa = (struct pci_attach_args *)aux;
    985 	switch (PCI_VENDOR(pa->pa_id)) {
    986 	case PCI_VENDOR_ESSTECH:
    987 		switch(PCI_PRODUCT(pa->pa_id)) {
    988 		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
    989 		case PCI_PRODUCT_ESSTECH_MAESTRO3:
    990 		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
    991 			return 1;
    992 		}
    993 	}
    994 
    995 	return 0;
    996 }
    997 
    998 static void
    999 esa_attach(device_t parent, device_t self, void *aux)
   1000 {
   1001 	struct esa_softc *sc;
   1002 	struct pci_attach_args *pa;
   1003 	pcitag_t tag;
   1004 	pci_chipset_tag_t pc;
   1005 	pci_intr_handle_t ih;
   1006 	const struct esa_card_type *card;
   1007 	const char *intrstr;
   1008 	uint32_t data;
   1009 	int revision, i, error;
   1010 	char intrbuf[PCI_INTRSTR_LEN];
   1011 
   1012 	sc = device_private(self);
   1013 	pa = (struct pci_attach_args *)aux;
   1014 	tag = pa->pa_tag;
   1015 	pc = pa->pa_pc;
   1016 
   1017 	pci_aprint_devinfo(pa, "Audio controller");
   1018 
   1019 	revision = PCI_REVISION(pa->pa_class);
   1020 
   1021 	for (card = esa_card_types; card->pci_vendor_id; card++)
   1022 		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
   1023 		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
   1024 			sc->type = card->type;
   1025 			sc->delay1 = card->delay1;
   1026 			sc->delay2 = card->delay2;
   1027 			break;
   1028 		}
   1029 
   1030 	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
   1031 	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
   1032 	    | PCI_COMMAND_MASTER_ENABLE);
   1033 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
   1034 
   1035 	/* Map I/O register */
   1036 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
   1037 	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
   1038 		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
   1039 		return;
   1040 	}
   1041 
   1042 	/* Initialize softc */
   1043 	sc->sc_dev = self;
   1044 	sc->sc_tag = tag;
   1045 	sc->sc_pct = pc;
   1046 	sc->sc_dmat = pa->pa_dmat;
   1047 
   1048 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
   1049 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
   1050 
   1051 	/* Map and establish an interrupt */
   1052 	if (pci_intr_map(pa, &ih)) {
   1053 		aprint_error_dev(sc->sc_dev, "can't map interrupt\n");
   1054 		mutex_destroy(&sc->sc_lock);
   1055 		mutex_destroy(&sc->sc_intr_lock);
   1056 		return;
   1057 	}
   1058 	intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
   1059 	sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_AUDIO, esa_intr, sc,
   1060 	    device_xname(self));
   1061 	if (sc->sc_ih == NULL) {
   1062 		aprint_error_dev(sc->sc_dev, "can't establish interrupt");
   1063 		if (intrstr != NULL)
   1064 			aprint_error(" at %s", intrstr);
   1065 		aprint_error("\n");
   1066 		mutex_destroy(&sc->sc_lock);
   1067 		mutex_destroy(&sc->sc_intr_lock);
   1068 		return;
   1069 	}
   1070 	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
   1071 
   1072 	/* power up chip */
   1073 	if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
   1074 	    pci_activate_null)) && error != EOPNOTSUPP) {
   1075 		aprint_error_dev(sc->sc_dev, "cannot activate %d\n", error);
   1076 		mutex_destroy(&sc->sc_lock);
   1077 		mutex_destroy(&sc->sc_intr_lock);
   1078 		return;
   1079 	}
   1080 
   1081 	/* Init chip */
   1082 	if (esa_init(sc) == -1) {
   1083 		aprint_error_dev(sc->sc_dev,
   1084 		    "esa_attach: unable to initialize the card\n");
   1085 		mutex_destroy(&sc->sc_lock);
   1086 		mutex_destroy(&sc->sc_intr_lock);
   1087 		return;
   1088 	}
   1089 
   1090 	/* create suspend save area */
   1091 	sc->savememsz = sizeof(uint16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
   1092 	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
   1093 	sc->savemem = kmem_zalloc(sc->savememsz, KM_SLEEP);
   1094 
   1095 	/*
   1096 	 * Every card I've seen has had their channels swapped with respect
   1097 	 * to the mixer. Ie:
   1098 	 *  $ mixerctl -w outputs.master=0,191
   1099 	 * Would result in the _right_ speaker being turned off.
   1100 	 *
   1101 	 * So, we will swap the left and right mixer channels to compensate
   1102 	 * for this.
   1103 	 *
   1104 	 * XXX PR# 23620: The Dell C810 channels are not swapped. Match
   1105 	 *     on revision ID for now; this is probably wrong.
   1106 	 */
   1107 	if (revision == 0x10 && sc->type == ESS_MAESTRO3)
   1108 		sc->codec_flags = 0;
   1109 	else
   1110 		sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
   1111 
   1112 	/* initialize list management structures */
   1113 	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
   1114 	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
   1115 	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
   1116 	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
   1117 	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
   1118 	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
   1119 	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
   1120 	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
   1121 
   1122 	/* initialize index maps */
   1123 	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
   1124 		sc->mixer_list.indexmap[i] = -1;
   1125 		sc->msrc_list.indexmap[i] = -1;
   1126 		sc->dma_list.indexmap[i] = -1;
   1127 		sc->adc1_list.indexmap[i] = -1;
   1128 	}
   1129 
   1130 	/* Attach AC97 host interface */
   1131 	sc->host_if.arg = sc;
   1132 	sc->host_if.attach = esa_attach_codec;
   1133 	sc->host_if.read = esa_read_codec;
   1134 	sc->host_if.write = esa_write_codec;
   1135 	sc->host_if.reset = esa_reset_codec;
   1136 	sc->host_if.flags = esa_flags_codec;
   1137 
   1138 	if (ac97_attach(&sc->host_if, self, &sc->sc_lock) != 0) {
   1139 		mutex_destroy(&sc->sc_lock);
   1140 		mutex_destroy(&sc->sc_intr_lock);
   1141 		return;
   1142 	}
   1143 
   1144 	/* Attach audio interface. */
   1145 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1146 		sc->voice[i].parent = sc->sc_dev;
   1147 		sc->voice[i].index = i;
   1148 		sc->sc_audiodev[i] =
   1149 		    audio_attach_mi(&esa_hw_if, &sc->voice[i], sc->sc_dev);
   1150 	}
   1151 
   1152 	if (!pmf_device_register(self, esa_suspend, esa_resume))
   1153 		aprint_error_dev(self, "couldn't establish power handler\n");
   1154 
   1155 	return;
   1156 }
   1157 
   1158 void
   1159 esa_childdet(device_t self, device_t child)
   1160 {
   1161 	struct esa_softc *sc = device_private(self);
   1162 	int i;
   1163 
   1164 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1165 		if (sc->sc_audiodev[i] == child) {
   1166 			sc->sc_audiodev[i] = NULL;
   1167 			break;
   1168 		}
   1169 	}
   1170 	KASSERT(i < ESA_NUM_VOICES);
   1171 }
   1172 
   1173 static int
   1174 esa_detach(device_t self, int flags)
   1175 {
   1176 	struct esa_softc *sc;
   1177 	int i;
   1178 
   1179 	sc = device_private(self);
   1180 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1181 		if (sc->sc_audiodev[i] != NULL)
   1182 			config_detach(sc->sc_audiodev[i], flags);
   1183 	}
   1184 
   1185 	if (sc->sc_ih != NULL)
   1186 		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
   1187 	if (sc->sc_ios)
   1188 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
   1189 
   1190 	kmem_free(sc->savemem, sc->savememsz);
   1191 	mutex_destroy(&sc->sc_lock);
   1192 	mutex_destroy(&sc->sc_intr_lock);
   1193 
   1194 	return 0;
   1195 }
   1196 
   1197 static uint16_t
   1198 esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
   1199 {
   1200 	uint16_t data;
   1201 	bus_space_tag_t iot;
   1202 	bus_space_handle_t ioh;
   1203 
   1204 	iot = sc->sc_iot;
   1205 	ioh = sc->sc_ioh;
   1206 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1207 	    region & ESA_MEMTYPE_MASK);
   1208 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1209 	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
   1210 
   1211 	return data;
   1212 }
   1213 
   1214 static void
   1215 esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
   1216 	       uint16_t data)
   1217 {
   1218 	bus_space_tag_t iot;
   1219 	bus_space_handle_t ioh;
   1220 
   1221 	iot = sc->sc_iot;
   1222 	ioh = sc->sc_ioh;
   1223 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1224 	    region & ESA_MEMTYPE_MASK);
   1225 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1226 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
   1227 
   1228 	return;
   1229 }
   1230 
   1231 static int
   1232 esa_init_codec(struct esa_softc *sc)
   1233 {
   1234 	bus_space_tag_t iot;
   1235 	bus_space_handle_t ioh;
   1236 	uint32_t data;
   1237 
   1238 	iot = sc->sc_iot;
   1239 	ioh = sc->sc_ioh;
   1240 	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
   1241 
   1242 	return (data & 0x1) ? 0 : 1;
   1243 }
   1244 
   1245 static int
   1246 esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
   1247 {
   1248 	struct esa_softc *sc;
   1249 
   1250 	sc = aux;
   1251 	sc->codec_if = codec_if;
   1252 
   1253 	return 0;
   1254 }
   1255 
   1256 static int
   1257 esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
   1258 {
   1259 	struct esa_softc *sc;
   1260 	bus_space_tag_t iot;
   1261 	bus_space_handle_t ioh;
   1262 
   1263 	sc = aux;
   1264 	iot = sc->sc_iot;
   1265 	ioh = sc->sc_ioh;
   1266 	if (esa_wait(sc))
   1267 		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
   1268 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
   1269 	delay(50);
   1270 	if (esa_wait(sc))
   1271 		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
   1272 	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
   1273 
   1274 	return 0;
   1275 }
   1276 
   1277 static int
   1278 esa_write_codec(void *aux, uint8_t reg, uint16_t data)
   1279 {
   1280 	struct esa_softc *sc;
   1281 	bus_space_tag_t iot;
   1282 	bus_space_handle_t ioh;
   1283 
   1284 	sc = aux;
   1285 	iot = sc->sc_iot;
   1286 	ioh = sc->sc_ioh;
   1287 	if (esa_wait(sc)) {
   1288 		aprint_error_dev(sc->sc_dev, "esa_write_codec: timed out\n");
   1289 		return -1;
   1290 	}
   1291 	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
   1292 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
   1293 	delay(50);
   1294 
   1295 	return 0;
   1296 }
   1297 
   1298 static int
   1299 esa_reset_codec(void *aux)
   1300 {
   1301 
   1302 	return 0;
   1303 }
   1304 
   1305 static enum ac97_host_flags
   1306 esa_flags_codec(void *aux)
   1307 {
   1308 	struct esa_softc *sc;
   1309 
   1310 	sc = aux;
   1311 	return sc->codec_flags;
   1312 }
   1313 
   1314 static int
   1315 esa_wait(struct esa_softc *sc)
   1316 {
   1317 	int i, val;
   1318 	bus_space_tag_t iot;
   1319 	bus_space_handle_t ioh;
   1320 
   1321 	iot = sc->sc_iot;
   1322 	ioh = sc->sc_ioh;
   1323 	for (i = 0; i < 20; i++) {
   1324 		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
   1325 		if ((val & 1) == 0)
   1326 			return 0;
   1327 		delay(2);
   1328 	}
   1329 
   1330 	return -1;
   1331 }
   1332 
   1333 static int
   1334 esa_init(struct esa_softc *sc)
   1335 {
   1336 	struct esa_voice *vc;
   1337 	bus_space_tag_t iot;
   1338 	bus_space_handle_t ioh;
   1339 	pcitag_t tag;
   1340 	pci_chipset_tag_t pc;
   1341 	uint32_t data, i, size;
   1342 	uint8_t reset_state;
   1343 	int data_bytes;
   1344 
   1345 	iot = sc->sc_iot;
   1346 	ioh = sc->sc_ioh;
   1347 	tag = sc->sc_tag;
   1348 	pc = sc->sc_pct;
   1349 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
   1350 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
   1351 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
   1352 
   1353 	mutex_spin_enter(&sc->sc_intr_lock);
   1354 
   1355 	/* Disable legacy emulation */
   1356 	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
   1357 	data |= DISABLE_LEGACY;
   1358 	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
   1359 
   1360 	esa_config(sc);
   1361 
   1362 	reset_state = esa_assp_halt(sc);
   1363 
   1364 	esa_init_codec(sc);
   1365 	esa_codec_reset(sc);
   1366 
   1367 	/* Zero kernel and mixer data */
   1368 	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
   1369 	for (i = 0; i < size / 2; i++) {
   1370 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1371 		    ESA_KDATA_BASE_ADDR + i, 0);
   1372 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1373 		    ESA_KDATA_BASE_ADDR2 + i, 0);
   1374 	}
   1375 
   1376 	/* Init DMA pointer */
   1377 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
   1378 	    ESA_KDATA_DMA_XFER0);
   1379 
   1380 	/* Write kernel code into memory */
   1381 	for (i = 0; i < __arraycount(esa_assp_kernel_image); i++)
   1382 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1383 		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
   1384 
   1385 	for (i = 0; i < __arraycount(esa_assp_minisrc_image); i++)
   1386 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
   1387 		    esa_assp_minisrc_image[i]);
   1388 
   1389 	/* Write the coefficients for the low pass filter */
   1390 	for (i = 0; i < __arraycount(esa_minisrc_lpf_image); i++)
   1391 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1392 		    0x400 + ESA_MINISRC_COEF_LOC + i,
   1393 		    esa_minisrc_lpf_image[i]);
   1394 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1395 	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
   1396 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
   1397 	/* Init the mixer number */
   1398 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1399 	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
   1400 	/* Extreme kernel master volume */
   1401 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1402 	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
   1403 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1404 	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
   1405 
   1406 	if (esa_amp_enable(sc))
   1407 		return -1;
   1408 
   1409 	/* Zero entire DAC/ADC area */
   1410 	for (i = 0x1100; i < 0x1c00; i++)
   1411 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
   1412 
   1413 	/* set some sane defaults */
   1414 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1415 		vc = &sc->voice[i];
   1416 		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
   1417 		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
   1418 	}
   1419 
   1420 	esa_enable_interrupts(sc);
   1421 
   1422 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1423 	    reset_state | ESA_REGB_ENABLE_RESET);
   1424 
   1425 	mutex_spin_exit(&sc->sc_intr_lock);
   1426 
   1427 	return 0;
   1428 }
   1429 
   1430 static void
   1431 esa_config(struct esa_softc *sc)
   1432 {
   1433 	bus_space_tag_t iot;
   1434 	bus_space_handle_t ioh;
   1435 	pcitag_t tag;
   1436 	pci_chipset_tag_t pc;
   1437 	uint32_t data;
   1438 
   1439 	iot = sc->sc_iot;
   1440 	ioh = sc->sc_ioh;
   1441 	tag = sc->sc_tag;
   1442 	pc = sc->sc_pct;
   1443 
   1444 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1445 	data &= ESA_REDUCED_DEBOUNCE;
   1446 	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
   1447 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1448 
   1449 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
   1450 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1451 	data &= ~ESA_INT_CLK_SELECT;
   1452 	if (sc->type == ESS_MAESTRO3) {
   1453 		data &= ~ESA_INT_CLK_MULT_ENABLE;
   1454 		data |= ESA_INT_CLK_SRC_NOT_PCI;
   1455 	}
   1456 	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
   1457 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1458 
   1459 	if (sc->type == ESS_ALLEGRO1) {
   1460 		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
   1461 		data |= ESA_IN_CLK_12MHZ_SELECT;
   1462 		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
   1463 	}
   1464 
   1465 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
   1466 	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
   1467 	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
   1468 	data |= ESA_ASSP_0_WS_ENABLE;
   1469 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
   1470 
   1471 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
   1472 
   1473 	return;
   1474 }
   1475 
   1476 static uint8_t
   1477 esa_assp_halt(struct esa_softc *sc)
   1478 {
   1479 	bus_space_tag_t iot;
   1480 	bus_space_handle_t ioh;
   1481 	uint8_t data, reset_state;
   1482 
   1483 	iot = sc->sc_iot;
   1484 	ioh = sc->sc_ioh;
   1485 	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
   1486 	reset_state = data & ~ESA_REGB_STOP_CLOCK;
   1487 	delay(10000);
   1488 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1489 			reset_state & ~ESA_REGB_ENABLE_RESET);
   1490 	delay(10000);
   1491 
   1492 	return reset_state;
   1493 }
   1494 
   1495 static void
   1496 esa_codec_reset(struct esa_softc *sc)
   1497 {
   1498 	bus_space_tag_t iot;
   1499 	bus_space_handle_t ioh;
   1500 	uint16_t data, dir;
   1501 	int retry;
   1502 
   1503 	iot = sc->sc_iot;
   1504 	ioh = sc->sc_ioh;
   1505 	retry = 0;
   1506 	do {
   1507 		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1508 		dir = data | 0x10; /* assuming pci bus master? */
   1509 
   1510 		/* remote codec config */
   1511 		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
   1512 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
   1513 		    data & ~ESA_SECOND_CODEC_ID_MASK);
   1514 		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
   1515 		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
   1516 		    data & ~ESA_COMMAND_ADDR_OUT);
   1517 		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
   1518 		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
   1519 		    data & ~ESA_STATUS_ADDR_IN);
   1520 
   1521 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1522 				  ESA_IO_SRAM_ENABLE);
   1523 		delay(20);
   1524 
   1525 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1526 		    dir & ~ESA_GPO_PRIMARY_AC97);
   1527 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
   1528 				  ~ESA_GPO_PRIMARY_AC97);
   1529 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
   1530 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1531 		    dir | ESA_GPO_PRIMARY_AC97);
   1532 		delay(sc->delay1 * 1000);
   1533 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
   1534 				  ESA_GPO_PRIMARY_AC97);
   1535 		delay(5);
   1536 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1537 		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
   1538 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1539 		delay(sc->delay2 * 1000);
   1540 
   1541 		esa_read_codec(sc, 0x7c, &data);
   1542 		if ((data == 0) || (data == 0xffff)) {
   1543 			retry++;
   1544 			if (retry > 3) {
   1545 				aprint_error_dev(sc->sc_dev,
   1546 				    "esa_codec_reset: failed\n");
   1547 				break;
   1548 			}
   1549 			aprint_normal_dev(sc->sc_dev,
   1550 			    "esa_codec_reset: retrying\n");
   1551 		} else
   1552 			retry = 0;
   1553 	} while (retry);
   1554 
   1555 	return;
   1556 }
   1557 
   1558 static int
   1559 esa_amp_enable(struct esa_softc *sc)
   1560 {
   1561 	bus_space_tag_t iot;
   1562 	bus_space_handle_t ioh;
   1563 	uint32_t gpo, polarity_port, polarity;
   1564 	uint16_t data;
   1565 
   1566 	iot = sc->sc_iot;
   1567 	ioh = sc->sc_ioh;
   1568 	switch (sc->type) {
   1569 	case ESS_ALLEGRO1:
   1570 		polarity_port = 0x1800;
   1571 		break;
   1572 	case ESS_MAESTRO3:
   1573 		polarity_port = 0x1100;
   1574 		break;
   1575 	default:
   1576 		aprint_error_dev(sc->sc_dev,
   1577 		    "esa_amp_enable: Unknown chip type!!!\n");
   1578 		return 1;
   1579 	}
   1580 
   1581 	gpo = (polarity_port >> 8) & 0x0f;
   1582 	polarity = polarity_port >> 12;
   1583 	polarity = !polarity;	/* Enable */
   1584 	polarity = polarity << gpo;
   1585 	gpo = 1 << gpo;
   1586 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
   1587 	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1588 	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
   1589 	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
   1590 	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
   1591 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1592 
   1593 	return 0;
   1594 }
   1595 
   1596 static void
   1597 esa_enable_interrupts(struct esa_softc *sc)
   1598 {
   1599 	bus_space_tag_t iot;
   1600 	bus_space_handle_t ioh;
   1601 	uint8_t data;
   1602 
   1603 	iot = sc->sc_iot;
   1604 	ioh = sc->sc_ioh;
   1605 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
   1606 	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
   1607 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
   1608 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
   1609 	    data | ESA_ASSP_HOST_INT_ENABLE);
   1610 }
   1611 
   1612 /*
   1613  * List management
   1614  */
   1615 static int
   1616 esa_add_list(struct esa_voice *vc, struct esa_list *el,
   1617 	     uint16_t val, int index)
   1618 {
   1619 	struct esa_softc *sc;
   1620 
   1621 	sc = device_private(vc->parent);
   1622 	el->indexmap[index] = el->currlen;
   1623 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1624 		       el->mem_addr + el->currlen,
   1625 		       val);
   1626 
   1627 	return el->currlen++;
   1628 }
   1629 
   1630 static void
   1631 esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
   1632 {
   1633 	struct esa_softc *sc;
   1634 	uint16_t val;
   1635 	int lastindex;
   1636 	int vindex;
   1637 	int i;
   1638 
   1639 	sc = device_private(vc->parent);
   1640 	lastindex = el->currlen - 1;
   1641 	vindex = el->indexmap[index];
   1642 
   1643 	/* reset our virtual index */
   1644 	el->indexmap[index] = -1;
   1645 
   1646 	if (vindex != lastindex) {
   1647 		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1648 				    el->mem_addr + lastindex);
   1649 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1650 			       el->mem_addr + vindex,
   1651 			       val);
   1652 		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
   1653 			if (el->indexmap[i] == lastindex)
   1654 				break;
   1655 		if (i >= ESA_NUM_VOICES * 2)
   1656 			aprint_error_dev(sc->sc_dev,
   1657 			    "esa_remove_list: invalid task index\n");
   1658 		else
   1659 			el->indexmap[i] = vindex;
   1660 	}
   1661 
   1662 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1663 		       el->mem_addr + lastindex, 0);
   1664 	el->currlen--;
   1665 
   1666 	return;
   1667 }
   1668 
   1669 static bool
   1670 esa_suspend(device_t dv, const pmf_qual_t *qual)
   1671 {
   1672 	struct esa_softc *sc = device_private(dv);
   1673 	bus_space_tag_t iot = sc->sc_iot;
   1674 	bus_space_handle_t ioh = sc->sc_ioh;
   1675 	int i, index;
   1676 
   1677 	index = 0;
   1678 
   1679 	mutex_enter(&sc->sc_lock);
   1680 	mutex_spin_enter(&sc->sc_intr_lock);
   1681 
   1682 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
   1683 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
   1684 
   1685 	esa_assp_halt(sc);
   1686 
   1687 	/* Save ASSP state */
   1688 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1689 	    i++)
   1690 		sc->savemem[index++] = esa_read_assp(sc,
   1691 		    ESA_MEMTYPE_INTERNAL_CODE, i);
   1692 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1693 	    i++)
   1694 		sc->savemem[index++] = esa_read_assp(sc,
   1695 		    ESA_MEMTYPE_INTERNAL_DATA, i);
   1696 
   1697 	mutex_spin_exit(&sc->sc_intr_lock);
   1698 	mutex_exit(&sc->sc_lock);
   1699 
   1700 	return true;
   1701 }
   1702 
   1703 static bool
   1704 esa_resume(device_t dv, const pmf_qual_t *qual)
   1705 {
   1706 	struct esa_softc *sc = device_private(dv);
   1707 	bus_space_tag_t iot = sc->sc_iot;
   1708 	bus_space_handle_t ioh = sc->sc_ioh;
   1709 	int i, index;
   1710 	uint8_t reset_state;
   1711 	pcireg_t data;
   1712 
   1713 	index = 0;
   1714 
   1715 	delay(10000);
   1716 
   1717 	mutex_enter(&sc->sc_lock);
   1718 	mutex_spin_enter(&sc->sc_intr_lock);
   1719 
   1720 	data = pci_conf_read(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL);
   1721 	pci_conf_write(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL,
   1722 	    data | DISABLE_LEGACY);
   1723 
   1724 	bus_space_write_4(iot, ioh, ESA_PCI_ACPI_CONTROL, ESA_PCI_ACPI_D0);
   1725 
   1726 	esa_config(sc);
   1727 
   1728 	reset_state = esa_assp_halt(sc);
   1729 
   1730 	esa_init_codec(sc);
   1731 	esa_codec_reset(sc);
   1732 
   1733 	/* restore ASSP */
   1734 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1735 	    i++)
   1736 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
   1737 		    sc->savemem[index++]);
   1738 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1739 	    i++)
   1740 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
   1741 		    sc->savemem[index++]);
   1742 
   1743 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
   1744 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1745 	    reset_state | ESA_REGB_ENABLE_RESET);
   1746 
   1747 	esa_enable_interrupts(sc);
   1748 	esa_amp_enable(sc);
   1749 
   1750 	mutex_spin_exit(&sc->sc_intr_lock);
   1751 
   1752 	/* Finally, power up AC97 codec */
   1753 	delay(1000);
   1754 
   1755 	sc->codec_if->vtbl->restore_ports(sc->codec_if);
   1756 
   1757 	mutex_exit(&sc->sc_lock);
   1758 
   1759 	return true;
   1760 }
   1761 
   1762 static uint32_t
   1763 esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
   1764 {
   1765 	uint16_t hi, lo;
   1766 	uint32_t addr;
   1767 	int data_offset;
   1768 
   1769 	data_offset = ch->data_offset;
   1770 	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1771 	    ESA_CDATA_HOST_SRC_CURRENTH);
   1772 	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1773 	    ESA_CDATA_HOST_SRC_CURRENTL);
   1774 
   1775 	addr = lo | ((uint32_t)hi << 16);
   1776 	return (addr - ch->start);
   1777 }
   1778 
   1779 static paddr_t
   1780 esa_mappage(void *addr, void *mem, off_t off, int prot)
   1781 {
   1782 	struct esa_voice *vc;
   1783 	struct esa_softc *sc;
   1784 	struct esa_dma *p;
   1785 
   1786 	vc = addr;
   1787 	sc = device_private(vc->parent);
   1788 	if (off < 0)
   1789 		return -1;
   1790 	for (p = vc->dma; p && KERNADDR(p) != mem; p = p->next)
   1791 		continue;
   1792 	if (p == NULL)
   1793 		return -1;
   1794 	return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs,
   1795 			       off, prot, BUS_DMA_WAITOK);
   1796 }
   1797 
   1798 static void
   1799 esa_get_locks(void *addr, kmutex_t **intr, kmutex_t **proc)
   1800 {
   1801 	struct esa_voice *vc;
   1802 	struct esa_softc *sc;
   1803 
   1804 	vc = addr;
   1805 	sc = device_private(vc->parent);
   1806 
   1807 	*intr = &sc->sc_intr_lock;
   1808 	*proc = &sc->sc_lock;
   1809 }
   1810