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      1 /* $NetBSD: esa.c,v 1.66 2023/05/10 00:11:49 riastradh 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 1.66 2023/05/10 00:11:49 riastradh 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/audio_if.h>
     59 
     60 #include <dev/ic/ac97var.h>
     61 #include <dev/ic/ac97reg.h>
     62 
     63 #include <dev/pci/pcidevs.h>
     64 #include <dev/pci/pcivar.h>
     65 #include <dev/pci/esareg.h>
     66 #include <dev/pci/esadsp.h>
     67 #include <dev/pci/esavar.h>
     68 
     69 #define PCI_CBIO	0x10
     70 
     71 #define ESA_DAC_DATA	0x1100
     72 
     73 enum {
     74 	ESS_ALLEGRO1,
     75 	ESS_MAESTRO3
     76 };
     77 
     78 static const struct esa_card_type {
     79 	uint16_t pci_vendor_id;
     80 	uint16_t pci_product_id;
     81 	int type;
     82 	int delay1, delay2;
     83 } esa_card_types[] = {
     84 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_ALLEGRO1,
     85 	  ESS_ALLEGRO1, 50, 800 },
     86 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3,
     87 	  ESS_MAESTRO3, 20, 500 },
     88 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3_2,
     89 	  ESS_MAESTRO3, 20, 500 },
     90 	{ 0, 0, 0, 0, 0 }
     91 };
     92 
     93 static struct audio_device esa_device = {
     94 	"ESS Allegro",
     95 	"",
     96 	"esa"
     97 };
     98 
     99 static int		esa_match(device_t, cfdata_t, void *);
    100 static void		esa_attach(device_t, device_t, void *);
    101 static int		esa_detach(device_t, int);
    102 static void		esa_childdet(device_t, device_t);
    103 
    104 /* audio(9) functions */
    105 static int		esa_query_format(void *, audio_format_query_t *);
    106 static int		esa_set_format(void *, int,
    107 				       const audio_params_t *,
    108 				       const audio_params_t *,
    109 				       audio_filter_reg_t *,
    110 				       audio_filter_reg_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 int		esa_get_props(void *);
    123 static int		esa_trigger_output(void *, void *, void *, int,
    124 					   void (*)(void *), void *,
    125 					   const audio_params_t *);
    126 static int		esa_trigger_input(void *, void *, void *, int,
    127 					  void (*)(void *), void *,
    128 					  const audio_params_t *);
    129 static void		esa_get_locks(void *, kmutex_t **, kmutex_t **);
    130 
    131 static int		esa_intr(void *);
    132 static int		esa_allocmem(struct esa_softc *, size_t, size_t,
    133 				     struct esa_dma *);
    134 static int		esa_freemem(struct esa_softc *, struct esa_dma *);
    135 
    136 /* Supporting subroutines */
    137 static uint16_t		esa_read_assp(struct esa_softc *, uint16_t, uint16_t);
    138 static void		esa_write_assp(struct esa_softc *, uint16_t, uint16_t,
    139 				       uint16_t);
    140 static int		esa_init_codec(struct esa_softc *);
    141 static int		esa_attach_codec(void *, struct ac97_codec_if *);
    142 static int		esa_read_codec(void *, uint8_t, uint16_t *);
    143 static int		esa_write_codec(void *, uint8_t, uint16_t);
    144 static int		esa_reset_codec(void *);
    145 static enum ac97_host_flags	esa_flags_codec(void *);
    146 static int		esa_wait(struct esa_softc *);
    147 static int		esa_init(struct esa_softc *);
    148 static void		esa_config(struct esa_softc *);
    149 static uint8_t		esa_assp_halt(struct esa_softc *);
    150 static void		esa_codec_reset(struct esa_softc *);
    151 static int		esa_amp_enable(struct esa_softc *);
    152 static void		esa_enable_interrupts(struct esa_softc *);
    153 static uint32_t		esa_get_pointer(struct esa_softc *,
    154 					struct esa_channel *);
    155 
    156 /* list management */
    157 static int		esa_add_list(struct esa_voice *, struct esa_list *,
    158 				     uint16_t, int);
    159 static void		esa_remove_list(struct esa_voice *, struct esa_list *,
    160 					int);
    161 
    162 /* power management */
    163 static bool		esa_suspend(device_t, const pmf_qual_t *);
    164 static bool		esa_resume(device_t, const pmf_qual_t *);
    165 
    166 
    167 static const struct audio_format esa_formats[] = {
    168 	{
    169 		.mode		= AUMODE_PLAY | AUMODE_RECORD,
    170 		.encoding	= AUDIO_ENCODING_SLINEAR_LE,
    171 		.validbits	= 16,
    172 		.precision	= 16,
    173 		.channels	= 2,
    174 		.channel_mask	= AUFMT_STEREO,
    175 		.frequency_type	= 0,
    176 		.frequency	= { ESA_MINRATE, ESA_MAXRATE },
    177 	},
    178 };
    179 #define ESA_NFORMATS	__arraycount(esa_formats)
    180 
    181 static const struct audio_hw_if esa_hw_if = {
    182 	.query_format		= esa_query_format,
    183 	.set_format		= esa_set_format,
    184 	.round_blocksize	= esa_round_blocksize,
    185 	.commit_settings	= esa_commit_settings,
    186 	.halt_output		= esa_halt_output,
    187 	.halt_input		= esa_halt_input,
    188 	.getdev			= esa_getdev,
    189 	.set_port		= esa_set_port,
    190 	.get_port		= esa_get_port,
    191 	.query_devinfo		= esa_query_devinfo,
    192 	.allocm			= esa_malloc,
    193 	.freem			= esa_free,
    194 	.get_props		= esa_get_props,
    195 	.trigger_output		= esa_trigger_output,
    196 	.trigger_input		= esa_trigger_input,
    197 	.get_locks		= esa_get_locks,
    198 };
    199 
    200 CFATTACH_DECL2_NEW(esa, sizeof(struct esa_softc), esa_match, esa_attach,
    201     esa_detach, NULL, NULL, esa_childdet);
    202 
    203 /*
    204  * audio(9) functions
    205  */
    206 
    207 static int
    208 esa_query_format(void *hdl, audio_format_query_t *afp)
    209 {
    210 
    211 	return audio_query_format(esa_formats, ESA_NFORMATS, afp);
    212 }
    213 
    214 static int
    215 esa_set_format(void *hdl, int setmode,
    216     const audio_params_t *play, const audio_params_t *rec,
    217     audio_filter_reg_t *pfil, audio_filter_reg_t *rfil)
    218 {
    219 	struct esa_voice *vc;
    220 
    221 	vc = hdl;
    222 	if ((setmode & AUMODE_PLAY))
    223 		vc->play.mode = *play;
    224 	if ((setmode & AUMODE_RECORD))
    225 		vc->rec.mode = *rec;
    226 
    227 	return 0;
    228 }
    229 
    230 static int
    231 esa_commit_settings(void *hdl)
    232 {
    233 	struct esa_voice *vc;
    234 	struct esa_softc *sc;
    235 	const audio_params_t *p;
    236 	const audio_params_t *r;
    237 	uint32_t data;
    238 	uint32_t freq;
    239 	int data_bytes;
    240 
    241 	vc = hdl;
    242 	sc = device_private(vc->parent);
    243 	p = &vc->play.mode;
    244 	r = &vc->rec.mode;
    245 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    246 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    247 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
    248 	    &~ 255;
    249 	/* playback */
    250 	vc->play.data_offset = ESA_DAC_DATA + (data_bytes * vc->index);
    251 	if (p->channels == 1)
    252 		data = 1;
    253 	else
    254 		data = 0;
    255 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    256 		       vc->play.data_offset + ESA_SRC3_MODE_OFFSET,
    257 		       data);
    258 	if (p->precision  == 8)
    259 		data = 1;
    260 	else
    261 		data = 0;
    262 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    263 		       vc->play.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
    264 		       data);
    265 	if ((freq = ((p->sample_rate << 15) + 24000) / 48000) != 0) {
    266 		freq--;
    267 	}
    268 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    269 		       vc->play.data_offset + ESA_CDATA_FREQUENCY, freq);
    270 
    271 	/* recording */
    272 	vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * vc->index) +
    273 			      (data_bytes / 2);
    274 	if (r->channels == 1)
    275 		data = 1;
    276 	else
    277 		data = 0;
    278 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    279 		       vc->rec.data_offset + ESA_SRC3_MODE_OFFSET,
    280 		       data);
    281 	if (r->precision == 8)
    282 		data = 1;
    283 	else
    284 		data = 0;
    285 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    286 		       vc->rec.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
    287 		       data);
    288 	if ((freq = ((r->sample_rate << 15) + 24000) / 48000) != 0) {
    289 		freq--;
    290 	}
    291 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    292 		       vc->rec.data_offset + ESA_CDATA_FREQUENCY, freq);
    293 
    294 	return 0;
    295 };
    296 
    297 static int
    298 esa_round_blocksize(void *hdl, int bs, int mode,
    299     const audio_params_t *param)
    300 {
    301 
    302 	return bs & -0x20;	/* Be conservative; align to 32 bytes */
    303 }
    304 
    305 static int
    306 esa_halt_output(void *hdl)
    307 {
    308 	struct esa_voice *vc;
    309 	struct esa_softc *sc;
    310 	bus_space_tag_t iot;
    311 	bus_space_handle_t ioh;
    312 	uint16_t data;
    313 
    314 	vc = hdl;
    315 	sc = device_private(vc->parent);
    316 	iot = sc->sc_iot;
    317 	ioh = sc->sc_ioh;
    318 	if (vc->play.active == 0)
    319 		return 0;
    320 
    321 	vc->play.active = 0;
    322 
    323 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    324 		       ESA_CDATA_INSTANCE_READY + vc->play.data_offset, 0);
    325 
    326 	sc->sc_ntimers--;
    327 	if (sc->sc_ntimers == 0) {
    328 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    329 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
    330 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    331 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
    332 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    333 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    334 		    data & ~ESA_CLKRUN_GEN_ENABLE);
    335 	}
    336 
    337 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    338 		       ESA_KDATA_MIXER_TASK_NUMBER,
    339 		       sc->mixer_list.indexmap[vc->index]);
    340 	/* remove ourselves from the packed lists */
    341 	esa_remove_list(vc, &sc->mixer_list, vc->index);
    342 	esa_remove_list(vc, &sc->dma_list, vc->index);
    343 	esa_remove_list(vc, &sc->msrc_list, vc->index);
    344 
    345 	return 0;
    346 }
    347 
    348 static int
    349 esa_halt_input(void *hdl)
    350 {
    351 	struct esa_voice *vc;
    352 	struct esa_softc *sc;
    353 	bus_space_tag_t iot;
    354 	bus_space_handle_t ioh;
    355 	uint32_t data;
    356 
    357 	vc = hdl;
    358 	sc = device_private(vc->parent);
    359 	iot = sc->sc_iot;
    360 	ioh = sc->sc_ioh;
    361 	if (vc->rec.active == 0)
    362 		return 0;
    363 
    364 	vc->rec.active = 0;
    365 
    366 	sc->sc_ntimers--;
    367 	if (sc->sc_ntimers == 0) {
    368 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    369 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
    370 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    371 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
    372 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    373 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    374 				  data & ~ESA_CLKRUN_GEN_ENABLE);
    375 	}
    376 
    377 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, vc->rec.data_offset +
    378 		       ESA_CDATA_INSTANCE_READY, 0);
    379 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
    380 		       0);
    381 
    382 	/* remove ourselves from the packed lists */
    383 	esa_remove_list(vc, &sc->adc1_list, vc->index + ESA_NUM_VOICES);
    384 	esa_remove_list(vc, &sc->dma_list, vc->index + ESA_NUM_VOICES);
    385 	esa_remove_list(vc, &sc->msrc_list, vc->index + ESA_NUM_VOICES);
    386 
    387 	return 0;
    388 }
    389 
    390 static void *
    391 esa_malloc(void *hdl, int direction, size_t size)
    392 {
    393 	struct esa_voice *vc;
    394 	struct esa_softc *sc;
    395 	struct esa_dma *p;
    396 	int error;
    397 
    398 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
    399 	vc = hdl;
    400 	sc = device_private(vc->parent);
    401 	error = esa_allocmem(sc, size, 16, p);
    402 	if (error) {
    403 		kmem_free(p, sizeof(*p));
    404 		aprint_error_dev(sc->sc_dev,
    405 		    "%s: not enough memory\n", __func__);
    406 		return 0;
    407 	}
    408 	p->next = vc->dma;
    409 	vc->dma = p;
    410 
    411 	return KERNADDR(p);
    412 }
    413 
    414 static void
    415 esa_free(void *hdl, void *addr, size_t size)
    416 {
    417 	struct esa_voice *vc;
    418 	struct esa_softc *sc;
    419 	struct esa_dma *p;
    420 	struct esa_dma **pp;
    421 
    422 	vc = hdl;
    423 	sc = device_private(vc->parent);
    424 	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
    425 		if (KERNADDR(p) == addr) {
    426 			esa_freemem(sc, p);
    427 			*pp = p->next;
    428 			kmem_free(p, sizeof(*p));
    429 			return;
    430 		}
    431 }
    432 
    433 static int
    434 esa_getdev(void *hdl, struct audio_device *ret)
    435 {
    436 
    437 	*ret = esa_device;
    438 	return 0;
    439 }
    440 
    441 static int
    442 esa_set_port(void *hdl, mixer_ctrl_t *mc)
    443 {
    444 	struct esa_voice *vc;
    445 	struct esa_softc *sc;
    446 
    447 	vc = hdl;
    448 	sc = device_private(vc->parent);
    449 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc);
    450 }
    451 
    452 static int
    453 esa_get_port(void *hdl, mixer_ctrl_t *mc)
    454 {
    455 	struct esa_voice *vc;
    456 	struct esa_softc *sc;
    457 
    458 	vc = hdl;
    459 	sc = device_private(vc->parent);
    460 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc);
    461 }
    462 
    463 static int
    464 esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
    465 {
    466 	struct esa_voice *vc;
    467 	struct esa_softc *sc;
    468 
    469 	vc = hdl;
    470 	sc = device_private(vc->parent);
    471 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, di);
    472 }
    473 
    474 static int
    475 esa_get_props(void *hdl)
    476 {
    477 
    478 	return AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE |
    479 	    AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
    480 }
    481 
    482 static int
    483 esa_trigger_output(void *hdl, void *start, void *end, int blksize,
    484     void (*intr)(void *), void *intrarg, const audio_params_t *param)
    485 {
    486 	struct esa_voice *vc;
    487 	struct esa_softc *sc;
    488 	struct esa_dma *p;
    489 	bus_space_tag_t iot;
    490 	bus_space_handle_t ioh;
    491 	size_t size;
    492 	uint32_t data, bufaddr, i;
    493 	int data_bytes, dac_data, dsp_in_size;
    494 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
    495 
    496 	vc = hdl;
    497 	sc = device_private(vc->parent);
    498 	iot = sc->sc_iot;
    499 	ioh = sc->sc_ioh;
    500 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    501 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    502 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
    503 	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
    504 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
    505 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
    506 	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    507 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    508 
    509 	if (vc->play.active)
    510 		return EINVAL;
    511 
    512 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    513 		continue;
    514 	if (p == NULL) {
    515 		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n", __func__,
    516 		    start);
    517 		return EINVAL;
    518 	}
    519 
    520 	vc->play.active = 1;
    521 	vc->play.intr = intr;
    522 	vc->play.arg = intrarg;
    523 	vc->play.pos = 0;
    524 	vc->play.count = 0;
    525 	vc->play.buf = start;
    526 	vc->play.bufsize = size = (size_t)(((char *)end - (char *)start));
    527 	vc->play.blksize = blksize;
    528 	bufaddr = DMAADDR(p);
    529 	vc->play.start = bufaddr;
    530 
    531 #define LO(x) ((x) & 0x0000ffff)
    532 #define HI(x) ((x) >> 16)
    533 
    534 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    535 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    536 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    537 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    538 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    539 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    540 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    541 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    542 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    543 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    544 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    545 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    546 
    547 	/* DSP buffers */
    548 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    549 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    550 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    551 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    552 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    553 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    554 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    555 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    556 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    557 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    558 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    559 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    560 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    561 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    562 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    563 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    564 
    565 	/* Some per-client initializers */
    566 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    567 	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
    568 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    569 	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
    570 	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
    571 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    572 	    ESA_SRC3_DIRECTION_OFFSET + 22,
    573 	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
    574 	/* Tell it which way DMA is going */
    575 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    576 	    ESA_CDATA_DMA_CONTROL,
    577 	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
    578 	    ESA_DMAC_BLOCKF_SELECTOR);
    579 
    580 	/* Set an armload of static initializers */
    581 	for (i = 0; i < __arraycount(esa_playvals); i++)
    582 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    583 		    esa_playvals[i].addr, esa_playvals[i].val);
    584 
    585 	/* Put us in the packed task lists */
    586 	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
    587 		     vc->index);
    588 	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
    589 		     vc->index);
    590 	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
    591 		     vc->index);
    592 #undef LO
    593 #undef HI
    594 
    595 	sc->sc_ntimers++;
    596 
    597 	if (sc->sc_ntimers == 1) {
    598 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    599 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    600 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    601 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    602 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    603 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    604 		    data | ESA_CLKRUN_GEN_ENABLE);
    605 	}
    606 
    607 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
    608 	    ESA_CDATA_INSTANCE_READY, 1);
    609 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    610 	    ESA_KDATA_MIXER_TASK_NUMBER,
    611 	    sc->mixer_list.indexmap[vc->index]);
    612 
    613 	return 0;
    614 }
    615 
    616 static int
    617 esa_trigger_input(void *hdl, void *start, void *end, int blksize,
    618     void (*intr)(void *), void *intrarg, const audio_params_t *param)
    619 {
    620 	struct esa_voice *vc;
    621 	struct esa_softc *sc;
    622 	struct esa_dma *p;
    623 	bus_space_tag_t iot;
    624 	bus_space_handle_t ioh;
    625 	uint32_t data, bufaddr, i;
    626 	size_t size;
    627 	int data_bytes, adc_data, dsp_in_size;
    628 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
    629 
    630 	vc = hdl;
    631 	sc = device_private(vc->parent);
    632 	iot = sc->sc_iot;
    633 	ioh = sc->sc_ioh;
    634 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
    635 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
    636 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
    637 	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
    638 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
    639 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
    640 	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
    641 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
    642 
    643 	vc->rec.data_offset = adc_data;
    644 
    645 	/* We only support 1 recording channel */
    646 	if (vc->index > 0)
    647 		return ENODEV;
    648 
    649 	if (vc->rec.active)
    650 		return EINVAL;
    651 
    652 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
    653 		continue;
    654 	if (p == NULL) {
    655 		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n",
    656 		    __func__, start);
    657 		return EINVAL;
    658 	}
    659 
    660 	vc->rec.active = 1;
    661 	vc->rec.intr = intr;
    662 	vc->rec.arg = intrarg;
    663 	vc->rec.pos = 0;
    664 	vc->rec.count = 0;
    665 	vc->rec.buf = start;
    666 	vc->rec.bufsize = size = (size_t)(((char *)end - (char *)start));
    667 	vc->rec.blksize = blksize;
    668 	bufaddr = DMAADDR(p);
    669 	vc->rec.start = bufaddr;
    670 
    671 #define LO(x) ((x) & 0x0000ffff)
    672 #define HI(x) ((x) >> 16)
    673 
    674 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    675 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
    676 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    677 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
    678 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    679 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
    680 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    681 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
    682 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    683 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
    684 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    685 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
    686 
    687 	/* DSP buffers */
    688 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    689 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
    690 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    691 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
    692 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    693 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
    694 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    695 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
    696 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    697 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
    698 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    699 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
    700 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    701 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
    702 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    703 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
    704 
    705 	/* Some per-client initializers */
    706 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    707 	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
    708 	/* Tell it which way DMA is going */
    709 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    710 	    ESA_CDATA_DMA_CONTROL,
    711 	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
    712 	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
    713 
    714 	/* Set an armload of static initializers */
    715 	for (i = 0; i < __arraycount(esa_recvals); i++)
    716 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    717 		    esa_recvals[i].addr, esa_recvals[i].val);
    718 
    719 	/* Put us in the packed task lists */
    720 	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
    721 		     vc->index + ESA_NUM_VOICES);
    722 	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
    723 		     vc->index + ESA_NUM_VOICES);
    724 	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
    725 		     vc->index + ESA_NUM_VOICES);
    726 #undef LO
    727 #undef HI
    728 
    729 	sc->sc_ntimers++;
    730 	if (sc->sc_ntimers == 1) {
    731 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    732 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
    733 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
    734 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
    735 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
    736 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
    737 		    data | ESA_CLKRUN_GEN_ENABLE);
    738 	}
    739 
    740 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
    741 	    ESA_CDATA_INSTANCE_READY, 1);
    742 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
    743 	    1);
    744 
    745 	return 0;
    746 }
    747 
    748 /* Interrupt handler */
    749 static int
    750 esa_intr(void *hdl)
    751 {
    752 	struct esa_softc *sc;
    753 	struct esa_voice *vc;
    754 	bus_space_tag_t iot;
    755 	bus_space_handle_t ioh;
    756 	uint8_t status;
    757 	uint32_t pos;
    758 	uint32_t diff;
    759 	uint32_t blksize;
    760 	int i;
    761 
    762 	sc = hdl;
    763 	mutex_spin_enter(&sc->sc_intr_lock);
    764 
    765 	iot = sc->sc_iot;
    766 	ioh = sc->sc_ioh;
    767 
    768 	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
    769 	if (status == 0xff) {
    770 		mutex_spin_exit(&sc->sc_intr_lock);
    771 		return 0;
    772 	}
    773 
    774 	/* ack the interrupt */
    775 	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
    776 
    777 	if (status & ESA_HV_INT_PENDING) {
    778 		uint8_t event;
    779 
    780 		aprint_normal_dev(sc->sc_dev, "hardware volume interrupt\n");
    781 		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
    782 		switch(event) {
    783 		case 0xaa:	/* volume up */
    784 			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
    785 			break;
    786 		case 0x66:	/* volume down */
    787 			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
    788 			break;
    789 		case 0x88:	/* mute */
    790 			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_TOGGLE);
    791 			break;
    792 		default:
    793 			aprint_normal_dev(sc->sc_dev,
    794 			    "unknown hwvol event 0x%02x\n", event);
    795 			break;
    796 		}
    797 		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
    798 	}
    799 
    800 	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
    801 	    (bus_space_read_1(iot, ioh,
    802 	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
    803 	    (bus_space_read_1(iot, ioh,
    804 	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0) {
    805 		mutex_spin_exit(&sc->sc_intr_lock);
    806 		return 1;
    807 	}
    808 
    809 	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
    810 	    ESA_DSP2HOST_REQ_TIMER);
    811 
    812 	for (i = 0; i < ESA_NUM_VOICES; i++) {
    813 		vc = &sc->voice[i];
    814 
    815 		if (vc->play.active) {
    816 			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
    817 			diff = (vc->play.bufsize + pos - vc->play.pos) %
    818 			    vc->play.bufsize;
    819 
    820 			vc->play.pos = pos;
    821 			vc->play.count += diff;
    822 			blksize = vc->play.blksize;
    823 
    824 			while (vc->play.count >= blksize) {
    825 				vc->play.count -= blksize;
    826 				(*vc->play.intr)(vc->play.arg);
    827 			}
    828 		}
    829 
    830 		if (vc->rec.active) {
    831 			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
    832 			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
    833 			    vc->rec.bufsize;
    834 
    835 			vc->rec.pos = pos;
    836 			vc->rec.count += diff;
    837 			blksize = vc->rec.blksize;
    838 
    839 			while (vc->rec.count >= blksize) {
    840 				vc->rec.count -= blksize;
    841 				(*vc->rec.intr)(vc->rec.arg);
    842 			}
    843 		}
    844 	}
    845 
    846 	mutex_spin_exit(&sc->sc_intr_lock);
    847 	return 1;
    848 }
    849 
    850 static int
    851 esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
    852 	     struct esa_dma *p)
    853 {
    854 	int error;
    855 
    856 	p->size = size;
    857 	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
    858 				 p->segs, __arraycount(p->segs),
    859 				 &p->nsegs, BUS_DMA_WAITOK);
    860 	if (error)
    861 		return error;
    862 
    863 	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
    864 				&p->addr, BUS_DMA_WAITOK | BUS_DMA_COHERENT);
    865 	if (error)
    866 		goto free;
    867 
    868 	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
    869 				  BUS_DMA_WAITOK, &p->map);
    870 	if (error)
    871 		goto unmap;
    872 
    873 	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
    874 				BUS_DMA_WAITOK);
    875 	if (error)
    876 		goto destroy;
    877 
    878 	return 0;
    879 
    880 destroy:
    881 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    882 unmap:
    883 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    884 free:
    885 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    886 
    887 	return error;
    888 }
    889 
    890 static int
    891 esa_freemem(struct esa_softc *sc, struct esa_dma *p)
    892 {
    893 
    894 	bus_dmamap_unload(sc->sc_dmat, p->map);
    895 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    896 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    897 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
    898 
    899 	return 0;
    900 }
    901 
    902 /*
    903  * Supporting Subroutines
    904  */
    905 
    906 static int
    907 esa_match(device_t dev, cfdata_t match, void *aux)
    908 {
    909 	struct pci_attach_args *pa;
    910 
    911 	pa = (struct pci_attach_args *)aux;
    912 	switch (PCI_VENDOR(pa->pa_id)) {
    913 	case PCI_VENDOR_ESSTECH:
    914 		switch(PCI_PRODUCT(pa->pa_id)) {
    915 		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
    916 		case PCI_PRODUCT_ESSTECH_MAESTRO3:
    917 		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
    918 			return 1;
    919 		}
    920 	}
    921 
    922 	return 0;
    923 }
    924 
    925 static void
    926 esa_attach(device_t parent, device_t self, void *aux)
    927 {
    928 	struct esa_softc *sc;
    929 	struct pci_attach_args *pa;
    930 	pcitag_t tag;
    931 	pci_chipset_tag_t pc;
    932 	pci_intr_handle_t ih;
    933 	const struct esa_card_type *card;
    934 	const char *intrstr;
    935 	uint32_t data;
    936 	int revision, i, error;
    937 	char intrbuf[PCI_INTRSTR_LEN];
    938 
    939 	sc = device_private(self);
    940 	pa = (struct pci_attach_args *)aux;
    941 	tag = pa->pa_tag;
    942 	pc = pa->pa_pc;
    943 
    944 	pci_aprint_devinfo(pa, "Audio controller");
    945 
    946 	revision = PCI_REVISION(pa->pa_class);
    947 
    948 	for (card = esa_card_types; card->pci_vendor_id; card++)
    949 		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
    950 		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
    951 			sc->type = card->type;
    952 			sc->delay1 = card->delay1;
    953 			sc->delay2 = card->delay2;
    954 			break;
    955 		}
    956 
    957 	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
    958 	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
    959 	    | PCI_COMMAND_MASTER_ENABLE);
    960 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
    961 
    962 	/* Map I/O register */
    963 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
    964 	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
    965 		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
    966 		return;
    967 	}
    968 
    969 	/* Initialize softc */
    970 	sc->sc_dev = self;
    971 	sc->sc_tag = tag;
    972 	sc->sc_pct = pc;
    973 	sc->sc_dmat = pa->pa_dmat;
    974 
    975 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    976 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    977 
    978 	/* Map and establish an interrupt */
    979 	if (pci_intr_map(pa, &ih)) {
    980 		aprint_error_dev(sc->sc_dev, "can't map interrupt\n");
    981 		mutex_destroy(&sc->sc_lock);
    982 		mutex_destroy(&sc->sc_intr_lock);
    983 		return;
    984 	}
    985 	intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
    986 	sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_AUDIO, esa_intr, sc,
    987 	    device_xname(self));
    988 	if (sc->sc_ih == NULL) {
    989 		aprint_error_dev(sc->sc_dev, "can't establish interrupt");
    990 		if (intrstr != NULL)
    991 			aprint_error(" at %s", intrstr);
    992 		aprint_error("\n");
    993 		mutex_destroy(&sc->sc_lock);
    994 		mutex_destroy(&sc->sc_intr_lock);
    995 		return;
    996 	}
    997 	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
    998 
    999 	/* power up chip */
   1000 	if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
   1001 	    pci_activate_null)) && error != EOPNOTSUPP) {
   1002 		aprint_error_dev(sc->sc_dev, "cannot activate %d\n", error);
   1003 		mutex_destroy(&sc->sc_lock);
   1004 		mutex_destroy(&sc->sc_intr_lock);
   1005 		return;
   1006 	}
   1007 
   1008 	/* Init chip */
   1009 	if (esa_init(sc) == -1) {
   1010 		aprint_error_dev(sc->sc_dev,
   1011 		    "esa_attach: unable to initialize the card\n");
   1012 		mutex_destroy(&sc->sc_lock);
   1013 		mutex_destroy(&sc->sc_intr_lock);
   1014 		return;
   1015 	}
   1016 
   1017 	/* create suspend save area */
   1018 	sc->savememsz = sizeof(uint16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
   1019 	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
   1020 	sc->savemem = kmem_zalloc(sc->savememsz, KM_SLEEP);
   1021 
   1022 	/*
   1023 	 * Every card I've seen has had their channels swapped with respect
   1024 	 * to the mixer. Ie:
   1025 	 *  $ mixerctl -w outputs.master=0,191
   1026 	 * Would result in the _right_ speaker being turned off.
   1027 	 *
   1028 	 * So, we will swap the left and right mixer channels to compensate
   1029 	 * for this.
   1030 	 *
   1031 	 * XXX PR# 23620: The Dell C810 channels are not swapped. Match
   1032 	 *     on revision ID for now; this is probably wrong.
   1033 	 */
   1034 	if (revision == 0x10 && sc->type == ESS_MAESTRO3)
   1035 		sc->codec_flags = 0;
   1036 	else
   1037 		sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
   1038 
   1039 	/* initialize list management structures */
   1040 	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
   1041 	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
   1042 	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
   1043 	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
   1044 	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
   1045 	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
   1046 	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
   1047 	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
   1048 
   1049 	/* initialize index maps */
   1050 	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
   1051 		sc->mixer_list.indexmap[i] = -1;
   1052 		sc->msrc_list.indexmap[i] = -1;
   1053 		sc->dma_list.indexmap[i] = -1;
   1054 		sc->adc1_list.indexmap[i] = -1;
   1055 	}
   1056 
   1057 	/* Attach AC97 host interface */
   1058 	sc->host_if.arg = sc;
   1059 	sc->host_if.attach = esa_attach_codec;
   1060 	sc->host_if.read = esa_read_codec;
   1061 	sc->host_if.write = esa_write_codec;
   1062 	sc->host_if.reset = esa_reset_codec;
   1063 	sc->host_if.flags = esa_flags_codec;
   1064 
   1065 	if (ac97_attach(&sc->host_if, self, &sc->sc_lock) != 0) {
   1066 		mutex_destroy(&sc->sc_lock);
   1067 		mutex_destroy(&sc->sc_intr_lock);
   1068 		return;
   1069 	}
   1070 
   1071 	/* Attach audio interface. */
   1072 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1073 		sc->voice[i].parent = sc->sc_dev;
   1074 		sc->voice[i].index = i;
   1075 		sc->sc_audiodev[i] =
   1076 		    audio_attach_mi(&esa_hw_if, &sc->voice[i], sc->sc_dev);
   1077 	}
   1078 
   1079 	if (!pmf_device_register(self, esa_suspend, esa_resume))
   1080 		aprint_error_dev(self, "couldn't establish power handler\n");
   1081 
   1082 	return;
   1083 }
   1084 
   1085 void
   1086 esa_childdet(device_t self, device_t child)
   1087 {
   1088 	struct esa_softc *sc = device_private(self);
   1089 	int i;
   1090 
   1091 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1092 		if (sc->sc_audiodev[i] == child) {
   1093 			sc->sc_audiodev[i] = NULL;
   1094 			break;
   1095 		}
   1096 	}
   1097 	KASSERT(i < ESA_NUM_VOICES);
   1098 }
   1099 
   1100 static int
   1101 esa_detach(device_t self, int flags)
   1102 {
   1103 	struct esa_softc *sc = device_private(self);
   1104 	int error;
   1105 
   1106 	error = config_detach_children(self, flags);
   1107 	if (error)
   1108 		return error;
   1109 
   1110 	if (sc->sc_ih != NULL)
   1111 		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
   1112 	if (sc->sc_ios)
   1113 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
   1114 
   1115 	kmem_free(sc->savemem, sc->savememsz);
   1116 	mutex_destroy(&sc->sc_lock);
   1117 	mutex_destroy(&sc->sc_intr_lock);
   1118 
   1119 	return 0;
   1120 }
   1121 
   1122 static uint16_t
   1123 esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
   1124 {
   1125 	uint16_t data;
   1126 	bus_space_tag_t iot;
   1127 	bus_space_handle_t ioh;
   1128 
   1129 	iot = sc->sc_iot;
   1130 	ioh = sc->sc_ioh;
   1131 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1132 	    region & ESA_MEMTYPE_MASK);
   1133 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1134 	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
   1135 
   1136 	return data;
   1137 }
   1138 
   1139 static void
   1140 esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
   1141 	       uint16_t data)
   1142 {
   1143 	bus_space_tag_t iot;
   1144 	bus_space_handle_t ioh;
   1145 
   1146 	iot = sc->sc_iot;
   1147 	ioh = sc->sc_ioh;
   1148 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
   1149 	    region & ESA_MEMTYPE_MASK);
   1150 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
   1151 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
   1152 
   1153 	return;
   1154 }
   1155 
   1156 static int
   1157 esa_init_codec(struct esa_softc *sc)
   1158 {
   1159 	bus_space_tag_t iot;
   1160 	bus_space_handle_t ioh;
   1161 	uint32_t data;
   1162 
   1163 	iot = sc->sc_iot;
   1164 	ioh = sc->sc_ioh;
   1165 	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
   1166 
   1167 	return (data & 0x1) ? 0 : 1;
   1168 }
   1169 
   1170 static int
   1171 esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
   1172 {
   1173 	struct esa_softc *sc;
   1174 
   1175 	sc = aux;
   1176 	sc->codec_if = codec_if;
   1177 
   1178 	return 0;
   1179 }
   1180 
   1181 static int
   1182 esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
   1183 {
   1184 	struct esa_softc *sc;
   1185 	bus_space_tag_t iot;
   1186 	bus_space_handle_t ioh;
   1187 
   1188 	sc = aux;
   1189 	iot = sc->sc_iot;
   1190 	ioh = sc->sc_ioh;
   1191 	if (esa_wait(sc))
   1192 		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
   1193 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
   1194 	delay(50);
   1195 	if (esa_wait(sc))
   1196 		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
   1197 	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
   1198 
   1199 	return 0;
   1200 }
   1201 
   1202 static int
   1203 esa_write_codec(void *aux, uint8_t reg, uint16_t data)
   1204 {
   1205 	struct esa_softc *sc;
   1206 	bus_space_tag_t iot;
   1207 	bus_space_handle_t ioh;
   1208 
   1209 	sc = aux;
   1210 	iot = sc->sc_iot;
   1211 	ioh = sc->sc_ioh;
   1212 	if (esa_wait(sc)) {
   1213 		aprint_error_dev(sc->sc_dev, "esa_write_codec: timed out\n");
   1214 		return -1;
   1215 	}
   1216 	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
   1217 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
   1218 	delay(50);
   1219 
   1220 	return 0;
   1221 }
   1222 
   1223 static int
   1224 esa_reset_codec(void *aux)
   1225 {
   1226 
   1227 	return 0;
   1228 }
   1229 
   1230 static enum ac97_host_flags
   1231 esa_flags_codec(void *aux)
   1232 {
   1233 	struct esa_softc *sc;
   1234 
   1235 	sc = aux;
   1236 	return sc->codec_flags;
   1237 }
   1238 
   1239 static int
   1240 esa_wait(struct esa_softc *sc)
   1241 {
   1242 	int i, val;
   1243 	bus_space_tag_t iot;
   1244 	bus_space_handle_t ioh;
   1245 
   1246 	iot = sc->sc_iot;
   1247 	ioh = sc->sc_ioh;
   1248 	for (i = 0; i < 20; i++) {
   1249 		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
   1250 		if ((val & 1) == 0)
   1251 			return 0;
   1252 		delay(2);
   1253 	}
   1254 
   1255 	return -1;
   1256 }
   1257 
   1258 static int
   1259 esa_init(struct esa_softc *sc)
   1260 {
   1261 	struct esa_voice *vc;
   1262 	bus_space_tag_t iot;
   1263 	bus_space_handle_t ioh;
   1264 	pcitag_t tag;
   1265 	pci_chipset_tag_t pc;
   1266 	uint32_t data, i, size;
   1267 	uint8_t reset_state;
   1268 	int data_bytes;
   1269 
   1270 	iot = sc->sc_iot;
   1271 	ioh = sc->sc_ioh;
   1272 	tag = sc->sc_tag;
   1273 	pc = sc->sc_pct;
   1274 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
   1275 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
   1276 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
   1277 
   1278 	mutex_spin_enter(&sc->sc_intr_lock);
   1279 
   1280 	/* Disable legacy emulation */
   1281 	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
   1282 	data |= DISABLE_LEGACY;
   1283 	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
   1284 
   1285 	esa_config(sc);
   1286 
   1287 	reset_state = esa_assp_halt(sc);
   1288 
   1289 	esa_init_codec(sc);
   1290 	esa_codec_reset(sc);
   1291 
   1292 	/* Zero kernel and mixer data */
   1293 	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
   1294 	for (i = 0; i < size / 2; i++) {
   1295 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1296 		    ESA_KDATA_BASE_ADDR + i, 0);
   1297 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1298 		    ESA_KDATA_BASE_ADDR2 + i, 0);
   1299 	}
   1300 
   1301 	/* Init DMA pointer */
   1302 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
   1303 	    ESA_KDATA_DMA_XFER0);
   1304 
   1305 	/* Write kernel code into memory */
   1306 	for (i = 0; i < __arraycount(esa_assp_kernel_image); i++)
   1307 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1308 		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
   1309 
   1310 	for (i = 0; i < __arraycount(esa_assp_minisrc_image); i++)
   1311 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
   1312 		    esa_assp_minisrc_image[i]);
   1313 
   1314 	/* Write the coefficients for the low pass filter */
   1315 	for (i = 0; i < __arraycount(esa_minisrc_lpf_image); i++)
   1316 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1317 		    0x400 + ESA_MINISRC_COEF_LOC + i,
   1318 		    esa_minisrc_lpf_image[i]);
   1319 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
   1320 	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
   1321 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
   1322 	/* Init the mixer number */
   1323 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1324 	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
   1325 	/* Extreme kernel master volume */
   1326 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1327 	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
   1328 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1329 	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
   1330 
   1331 	if (esa_amp_enable(sc))
   1332 		return -1;
   1333 
   1334 	/* Zero entire DAC/ADC area */
   1335 	for (i = 0x1100; i < 0x1c00; i++)
   1336 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
   1337 
   1338 	/* set some sane defaults */
   1339 	for (i = 0; i < ESA_NUM_VOICES; i++) {
   1340 		vc = &sc->voice[i];
   1341 		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
   1342 		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
   1343 	}
   1344 
   1345 	esa_enable_interrupts(sc);
   1346 
   1347 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1348 	    reset_state | ESA_REGB_ENABLE_RESET);
   1349 
   1350 	mutex_spin_exit(&sc->sc_intr_lock);
   1351 
   1352 	return 0;
   1353 }
   1354 
   1355 static void
   1356 esa_config(struct esa_softc *sc)
   1357 {
   1358 	bus_space_tag_t iot;
   1359 	bus_space_handle_t ioh;
   1360 	pcitag_t tag;
   1361 	pci_chipset_tag_t pc;
   1362 	uint32_t data;
   1363 
   1364 	iot = sc->sc_iot;
   1365 	ioh = sc->sc_ioh;
   1366 	tag = sc->sc_tag;
   1367 	pc = sc->sc_pct;
   1368 
   1369 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1370 	data &= ESA_REDUCED_DEBOUNCE;
   1371 	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
   1372 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1373 
   1374 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
   1375 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
   1376 	data &= ~ESA_INT_CLK_SELECT;
   1377 	if (sc->type == ESS_MAESTRO3) {
   1378 		data &= ~ESA_INT_CLK_MULT_ENABLE;
   1379 		data |= ESA_INT_CLK_SRC_NOT_PCI;
   1380 	}
   1381 	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
   1382 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
   1383 
   1384 	if (sc->type == ESS_ALLEGRO1) {
   1385 		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
   1386 		data |= ESA_IN_CLK_12MHZ_SELECT;
   1387 		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
   1388 	}
   1389 
   1390 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
   1391 	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
   1392 	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
   1393 	data |= ESA_ASSP_0_WS_ENABLE;
   1394 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
   1395 
   1396 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
   1397 
   1398 	return;
   1399 }
   1400 
   1401 static uint8_t
   1402 esa_assp_halt(struct esa_softc *sc)
   1403 {
   1404 	bus_space_tag_t iot;
   1405 	bus_space_handle_t ioh;
   1406 	uint8_t data, reset_state;
   1407 
   1408 	iot = sc->sc_iot;
   1409 	ioh = sc->sc_ioh;
   1410 	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
   1411 	reset_state = data & ~ESA_REGB_STOP_CLOCK;
   1412 	delay(10000);
   1413 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1414 			reset_state & ~ESA_REGB_ENABLE_RESET);
   1415 	delay(10000);
   1416 
   1417 	return reset_state;
   1418 }
   1419 
   1420 static void
   1421 esa_codec_reset(struct esa_softc *sc)
   1422 {
   1423 	bus_space_tag_t iot;
   1424 	bus_space_handle_t ioh;
   1425 	uint16_t data, dir;
   1426 	int retry;
   1427 
   1428 	iot = sc->sc_iot;
   1429 	ioh = sc->sc_ioh;
   1430 	retry = 0;
   1431 	do {
   1432 		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1433 		dir = data | 0x10; /* assuming pci bus master? */
   1434 
   1435 		/* remote codec config */
   1436 		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
   1437 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
   1438 		    data & ~ESA_SECOND_CODEC_ID_MASK);
   1439 		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
   1440 		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
   1441 		    data & ~ESA_COMMAND_ADDR_OUT);
   1442 		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
   1443 		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
   1444 		    data & ~ESA_STATUS_ADDR_IN);
   1445 
   1446 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1447 				  ESA_IO_SRAM_ENABLE);
   1448 		delay(20);
   1449 
   1450 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1451 		    dir & ~ESA_GPO_PRIMARY_AC97);
   1452 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
   1453 				  ~ESA_GPO_PRIMARY_AC97);
   1454 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
   1455 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
   1456 		    dir | ESA_GPO_PRIMARY_AC97);
   1457 		delay(sc->delay1 * 1000);
   1458 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
   1459 				  ESA_GPO_PRIMARY_AC97);
   1460 		delay(5);
   1461 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
   1462 		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
   1463 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1464 		delay(sc->delay2 * 1000);
   1465 
   1466 		esa_read_codec(sc, 0x7c, &data);
   1467 		if ((data == 0) || (data == 0xffff)) {
   1468 			retry++;
   1469 			if (retry > 3) {
   1470 				aprint_error_dev(sc->sc_dev,
   1471 				    "esa_codec_reset: failed\n");
   1472 				break;
   1473 			}
   1474 			aprint_normal_dev(sc->sc_dev,
   1475 			    "esa_codec_reset: retrying\n");
   1476 		} else
   1477 			retry = 0;
   1478 	} while (retry);
   1479 
   1480 	return;
   1481 }
   1482 
   1483 static int
   1484 esa_amp_enable(struct esa_softc *sc)
   1485 {
   1486 	bus_space_tag_t iot;
   1487 	bus_space_handle_t ioh;
   1488 	uint32_t gpo, polarity_port, polarity;
   1489 	uint16_t data;
   1490 
   1491 	iot = sc->sc_iot;
   1492 	ioh = sc->sc_ioh;
   1493 	switch (sc->type) {
   1494 	case ESS_ALLEGRO1:
   1495 		polarity_port = 0x1800;
   1496 		break;
   1497 	case ESS_MAESTRO3:
   1498 		polarity_port = 0x1100;
   1499 		break;
   1500 	default:
   1501 		aprint_error_dev(sc->sc_dev,
   1502 		    "esa_amp_enable: Unknown chip type!!!\n");
   1503 		return 1;
   1504 	}
   1505 
   1506 	gpo = (polarity_port >> 8) & 0x0f;
   1507 	polarity = polarity_port >> 12;
   1508 	polarity = !polarity;	/* Enable */
   1509 	polarity = polarity << gpo;
   1510 	gpo = 1 << gpo;
   1511 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
   1512 	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
   1513 	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
   1514 	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
   1515 	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
   1516 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
   1517 
   1518 	return 0;
   1519 }
   1520 
   1521 static void
   1522 esa_enable_interrupts(struct esa_softc *sc)
   1523 {
   1524 	bus_space_tag_t iot;
   1525 	bus_space_handle_t ioh;
   1526 	uint8_t data;
   1527 
   1528 	iot = sc->sc_iot;
   1529 	ioh = sc->sc_ioh;
   1530 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
   1531 	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
   1532 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
   1533 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
   1534 	    data | ESA_ASSP_HOST_INT_ENABLE);
   1535 }
   1536 
   1537 /*
   1538  * List management
   1539  */
   1540 static int
   1541 esa_add_list(struct esa_voice *vc, struct esa_list *el,
   1542 	     uint16_t val, int index)
   1543 {
   1544 	struct esa_softc *sc;
   1545 
   1546 	sc = device_private(vc->parent);
   1547 	el->indexmap[index] = el->currlen;
   1548 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1549 		       el->mem_addr + el->currlen,
   1550 		       val);
   1551 
   1552 	return el->currlen++;
   1553 }
   1554 
   1555 static void
   1556 esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
   1557 {
   1558 	struct esa_softc *sc;
   1559 	uint16_t val;
   1560 	int lastindex;
   1561 	int vindex;
   1562 	int i;
   1563 
   1564 	sc = device_private(vc->parent);
   1565 	lastindex = el->currlen - 1;
   1566 	vindex = el->indexmap[index];
   1567 
   1568 	/* reset our virtual index */
   1569 	el->indexmap[index] = -1;
   1570 
   1571 	if (vindex != lastindex) {
   1572 		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1573 				    el->mem_addr + lastindex);
   1574 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1575 			       el->mem_addr + vindex,
   1576 			       val);
   1577 		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
   1578 			if (el->indexmap[i] == lastindex)
   1579 				break;
   1580 		if (i >= ESA_NUM_VOICES * 2)
   1581 			aprint_error_dev(sc->sc_dev,
   1582 			    "esa_remove_list: invalid task index\n");
   1583 		else
   1584 			el->indexmap[i] = vindex;
   1585 	}
   1586 
   1587 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
   1588 		       el->mem_addr + lastindex, 0);
   1589 	el->currlen--;
   1590 
   1591 	return;
   1592 }
   1593 
   1594 static bool
   1595 esa_suspend(device_t dv, const pmf_qual_t *qual)
   1596 {
   1597 	struct esa_softc *sc = device_private(dv);
   1598 	bus_space_tag_t iot = sc->sc_iot;
   1599 	bus_space_handle_t ioh = sc->sc_ioh;
   1600 	int i, index;
   1601 
   1602 	index = 0;
   1603 
   1604 	mutex_enter(&sc->sc_lock);
   1605 	mutex_spin_enter(&sc->sc_intr_lock);
   1606 
   1607 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
   1608 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
   1609 
   1610 	esa_assp_halt(sc);
   1611 
   1612 	/* Save ASSP state */
   1613 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1614 	    i++)
   1615 		sc->savemem[index++] = esa_read_assp(sc,
   1616 		    ESA_MEMTYPE_INTERNAL_CODE, i);
   1617 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1618 	    i++)
   1619 		sc->savemem[index++] = esa_read_assp(sc,
   1620 		    ESA_MEMTYPE_INTERNAL_DATA, i);
   1621 
   1622 	mutex_spin_exit(&sc->sc_intr_lock);
   1623 	mutex_exit(&sc->sc_lock);
   1624 
   1625 	return true;
   1626 }
   1627 
   1628 static bool
   1629 esa_resume(device_t dv, const pmf_qual_t *qual)
   1630 {
   1631 	struct esa_softc *sc = device_private(dv);
   1632 	bus_space_tag_t iot = sc->sc_iot;
   1633 	bus_space_handle_t ioh = sc->sc_ioh;
   1634 	int i, index;
   1635 	uint8_t reset_state;
   1636 	pcireg_t data;
   1637 
   1638 	index = 0;
   1639 
   1640 	delay(10000);
   1641 
   1642 	mutex_enter(&sc->sc_lock);
   1643 	mutex_spin_enter(&sc->sc_intr_lock);
   1644 
   1645 	data = pci_conf_read(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL);
   1646 	pci_conf_write(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL,
   1647 	    data | DISABLE_LEGACY);
   1648 
   1649 	bus_space_write_4(iot, ioh, ESA_PCI_ACPI_CONTROL, ESA_PCI_ACPI_D0);
   1650 
   1651 	esa_config(sc);
   1652 
   1653 	reset_state = esa_assp_halt(sc);
   1654 
   1655 	esa_init_codec(sc);
   1656 	esa_codec_reset(sc);
   1657 
   1658 	/* restore ASSP */
   1659 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
   1660 	    i++)
   1661 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
   1662 		    sc->savemem[index++]);
   1663 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
   1664 	    i++)
   1665 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
   1666 		    sc->savemem[index++]);
   1667 
   1668 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
   1669 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
   1670 	    reset_state | ESA_REGB_ENABLE_RESET);
   1671 
   1672 	esa_enable_interrupts(sc);
   1673 	esa_amp_enable(sc);
   1674 
   1675 	mutex_spin_exit(&sc->sc_intr_lock);
   1676 
   1677 	/* Finally, power up AC97 codec */
   1678 	delay(1000);
   1679 
   1680 	sc->codec_if->vtbl->restore_ports(sc->codec_if);
   1681 
   1682 	mutex_exit(&sc->sc_lock);
   1683 
   1684 	return true;
   1685 }
   1686 
   1687 static uint32_t
   1688 esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
   1689 {
   1690 	uint16_t hi, lo;
   1691 	uint32_t addr;
   1692 	int data_offset;
   1693 
   1694 	data_offset = ch->data_offset;
   1695 	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1696 	    ESA_CDATA_HOST_SRC_CURRENTH);
   1697 	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
   1698 	    ESA_CDATA_HOST_SRC_CURRENTL);
   1699 
   1700 	addr = lo | ((uint32_t)hi << 16);
   1701 	return (addr - ch->start);
   1702 }
   1703 
   1704 static void
   1705 esa_get_locks(void *addr, kmutex_t **intr, kmutex_t **proc)
   1706 {
   1707 	struct esa_voice *vc;
   1708 	struct esa_softc *sc;
   1709 
   1710 	vc = addr;
   1711 	sc = device_private(vc->parent);
   1712 
   1713 	*intr = &sc->sc_intr_lock;
   1714 	*proc = &sc->sc_lock;
   1715 }
   1716