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      1 /*	$NetBSD: gcscaudio.c,v 1.20 2024/02/07 04:20:28 msaitoh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008 SHIMIZU Ryo
      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. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: gcscaudio.c,v 1.20 2024/02/07 04:20:28 msaitoh Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/kmem.h>
     35 #include <sys/device.h>
     36 #include <sys/queue.h>
     37 
     38 #include <dev/pci/pcidevs.h>
     39 #include <dev/pci/pcivar.h>
     40 
     41 #include <sys/audioio.h>
     42 #include <dev/audio/audio_if.h>
     43 
     44 #include <dev/ic/ac97reg.h>
     45 #include <dev/ic/ac97var.h>
     46 
     47 #include <dev/pci/gcscaudioreg.h>
     48 
     49 
     50 #define	GCSCAUDIO_NPRDTABLE	256	/* including a JMP-PRD for loop */
     51 #define	GCSCAUDIO_PRD_SIZE_MAX	65532	/* limited by CS5536 Controller */
     52 #define	GCSCAUDIO_BUFSIZE_MAX	(GCSCAUDIO_PRD_SIZE_MAX * (GCSCAUDIO_NPRDTABLE - 1))
     53 
     54 struct gcscaudio_prd {
     55 	/* PRD table for play/rec */
     56 	struct gcscaudio_prdtables {
     57 #define	PRD_TABLE_FRONT		0
     58 #define	PRD_TABLE_SURR		1
     59 #define	PRD_TABLE_CENTER	2
     60 #define	PRD_TABLE_LFE		3
     61 #define	PRD_TABLE_REC		4
     62 #define	PRD_TABLE_MAX		5
     63 		struct acc_prd prdtbl[PRD_TABLE_MAX][GCSCAUDIO_NPRDTABLE];
     64 	} *p_prdtables;
     65 	bus_dmamap_t p_prdmap;
     66 	bus_dma_segment_t p_prdsegs[1];
     67 	int p_prdnseg;
     68 };
     69 
     70 struct gcscaudio_dma {
     71 	LIST_ENTRY(gcscaudio_dma) list;
     72 	bus_dmamap_t map;
     73 	void *addr;
     74 	size_t size;
     75 	bus_dma_segment_t segs[1];
     76 	int nseg;
     77 };
     78 
     79 struct gcscaudio_softc_ch {
     80 	void (*ch_intr)(void *);
     81 	void *ch_intr_arg;
     82 	struct audio_params ch_params;
     83 };
     84 
     85 struct gcscaudio_softc {
     86 	device_t sc_dev;
     87 	kmutex_t sc_lock;
     88 	kmutex_t sc_intr_lock;
     89 	pci_chipset_tag_t sc_pc;
     90 	pcitag_t sc_pt;
     91 	void *sc_ih;
     92 	bus_space_tag_t sc_iot;
     93 	bus_space_handle_t sc_ioh;
     94 	bus_size_t sc_ios;
     95 	bus_dma_tag_t sc_dmat;
     96 
     97 	/* allocated DMA buffer list */
     98 	LIST_HEAD(, gcscaudio_dma) sc_dmalist;
     99 
    100 #define GCSCAUDIO_MAXFORMATS	4
    101 	struct audio_format sc_formats[GCSCAUDIO_MAXFORMATS];
    102 	int sc_nformats;
    103 
    104 	/* AC97 codec */
    105 	struct ac97_host_if host_if;
    106 	struct ac97_codec_if *codec_if;
    107 
    108 	/* input, output channels */
    109 	struct gcscaudio_softc_ch sc_play;
    110 	struct gcscaudio_softc_ch sc_rec;
    111 	struct gcscaudio_prd sc_prd;
    112 
    113 	/* multi channel splitter work; {4,6}ch stream to {2,4} DMA buffers */
    114 	void *sc_mch_split_buf;
    115 	void *sc_mch_split_start;
    116 	int sc_mch_split_off;
    117 	int sc_mch_split_size;
    118 	int sc_mch_split_blksize;
    119 	void (*sc_mch_splitter)(void *, void *, int, int);
    120 	bool sc_spdif;
    121 };
    122 
    123 /* for cfattach */
    124 static int gcscaudio_match(device_t, cfdata_t, void *);
    125 static void gcscaudio_attach(device_t, device_t, void *);
    126 
    127 /* for audio_hw_if */
    128 static int gcscaudio_open(void *, int);
    129 static void gcscaudio_close(void *);
    130 static int gcscaudio_query_format(void *, audio_format_query_t *);
    131 static int gcscaudio_set_format(void *, int,
    132                                 const audio_params_t *, const audio_params_t *,
    133                                 audio_filter_reg_t *, audio_filter_reg_t *);
    134 static int gcscaudio_round_blocksize(void *, int, int, const audio_params_t *);
    135 static int gcscaudio_halt_output(void *);
    136 static int gcscaudio_halt_input(void *);
    137 static int gcscaudio_getdev(void *, struct audio_device *);
    138 static int gcscaudio_set_port(void *, mixer_ctrl_t *);
    139 static int gcscaudio_get_port(void *, mixer_ctrl_t *);
    140 static int gcscaudio_query_devinfo(void *, mixer_devinfo_t *);
    141 static void *gcscaudio_malloc(void *, int, size_t);
    142 static void gcscaudio_free(void *, void *, size_t);
    143 static size_t gcscaudio_round_buffersize(void *, int, size_t);
    144 static int gcscaudio_get_props(void *);
    145 static int gcscaudio_trigger_output(void *, void *, void *, int,
    146                                     void (*)(void *), void *,
    147                                     const audio_params_t *);
    148 static int gcscaudio_trigger_input(void *, void *, void *, int,
    149                                    void (*)(void *), void *,
    150                                    const audio_params_t *);
    151 static void gcscaudio_get_locks(void *, kmutex_t **, kmutex_t **);
    152 static bool gcscaudio_resume(device_t, const pmf_qual_t *);
    153 static int gcscaudio_intr(void *);
    154 
    155 /* for codec_if */
    156 static int gcscaudio_attach_codec(void *, struct ac97_codec_if *);
    157 static int gcscaudio_write_codec(void *, uint8_t, uint16_t);
    158 static int gcscaudio_read_codec(void *, uint8_t, uint16_t *);
    159 static int gcscaudio_reset_codec(void *);
    160 static void gcscaudio_spdif_event_codec(void *, bool);
    161 
    162 /* misc */
    163 static int gcscaudio_append_formats(struct gcscaudio_softc *,
    164                                     const struct audio_format *);
    165 static int gcscaudio_wait_ready_codec(struct gcscaudio_softc *sc, const char *);
    166 static int gcscaudio_allocate_dma(struct gcscaudio_softc *, size_t, void **,
    167                                   bus_dma_segment_t *, int, int *,
    168                                   bus_dmamap_t *);
    169 
    170 
    171 CFATTACH_DECL_NEW(gcscaudio, sizeof (struct gcscaudio_softc),
    172     gcscaudio_match, gcscaudio_attach, NULL, NULL);
    173 
    174 
    175 static struct audio_device gcscaudio_device = {
    176 	"AMD Geode CS5536",
    177 	"",
    178 	"gcscaudio"
    179 };
    180 
    181 static const struct audio_hw_if gcscaudio_hw_if = {
    182 	.open			= gcscaudio_open,
    183 	.close			= gcscaudio_close,
    184 	.query_format		= gcscaudio_query_format,
    185 	.set_format		= gcscaudio_set_format,
    186 	.round_blocksize	= gcscaudio_round_blocksize,
    187 	.commit_settings	= NULL,
    188 	.init_output		= NULL,
    189 	.init_input		= NULL,
    190 	.start_output		= NULL,
    191 	.start_input		= NULL,
    192 	.halt_output		= gcscaudio_halt_output,
    193 	.halt_input		= gcscaudio_halt_input,
    194 	.speaker_ctl		= NULL,
    195 	.getdev			= gcscaudio_getdev,
    196 	.set_port		= gcscaudio_set_port,
    197 	.get_port		= gcscaudio_get_port,
    198 	.query_devinfo		= gcscaudio_query_devinfo,
    199 	.allocm			= gcscaudio_malloc,
    200 	.freem			= gcscaudio_free,
    201 	.round_buffersize	= gcscaudio_round_buffersize,
    202 	.get_props		= gcscaudio_get_props,
    203 	.trigger_output		= gcscaudio_trigger_output,
    204 	.trigger_input		= gcscaudio_trigger_input,
    205 	.dev_ioctl		= NULL,
    206 	.get_locks		= gcscaudio_get_locks,
    207 };
    208 
    209 #define GCSCAUDIO_FORMAT(aumode, ch, chmask) \
    210 	{ \
    211 		.mode		= (aumode), \
    212 		.encoding	= AUDIO_ENCODING_SLINEAR_LE, \
    213 		.validbits	= 16, \
    214 		.precision	= 16, \
    215 		.channels	= (ch), \
    216 		.channel_mask	= (chmask), \
    217 		.frequency_type	= 0, \
    218 		.frequency	= { 8000, 48000 }, \
    219 	}
    220 static const struct audio_format gcscaudio_formats_2ch =
    221 	GCSCAUDIO_FORMAT(AUMODE_PLAY | AUMODE_RECORD, 2, AUFMT_STEREO);
    222 
    223 static const struct audio_format gcscaudio_formats_4ch =
    224 	GCSCAUDIO_FORMAT(AUMODE_PLAY                , 4, AUFMT_SURROUND4);
    225 
    226 static const struct audio_format gcscaudio_formats_6ch =
    227 	GCSCAUDIO_FORMAT(AUMODE_PLAY                , 6, AUFMT_DOLBY_5_1);
    228 
    229 static int
    230 gcscaudio_match(device_t parent, cfdata_t match, void *aux)
    231 {
    232 	struct pci_attach_args *pa;
    233 
    234 	pa = (struct pci_attach_args *)aux;
    235 	if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD) &&
    236 	    (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_CS5536_AUDIO))
    237 		return 1;
    238 
    239 	return 0;
    240 }
    241 
    242 static int
    243 gcscaudio_append_formats(struct gcscaudio_softc *sc,
    244                          const struct audio_format *format)
    245 {
    246 	if (sc->sc_nformats >= GCSCAUDIO_MAXFORMATS) {
    247 		aprint_error_dev(sc->sc_dev, "too many formats\n");
    248 		return EINVAL;
    249 	}
    250 	sc->sc_formats[sc->sc_nformats++] = *format;
    251 	return 0;
    252 }
    253 
    254 static void
    255 gcscaudio_attach(device_t parent, device_t self, void *aux)
    256 {
    257 	struct gcscaudio_softc *sc;
    258 	struct pci_attach_args *pa;
    259 	const char *intrstr;
    260 	pci_intr_handle_t ih;
    261 	int rc, i;
    262 	char intrbuf[PCI_INTRSTR_LEN];
    263 
    264 	sc = device_private(self);
    265 
    266 	sc->sc_dev = self;
    267 
    268 	aprint_naive(": Audio controller\n");
    269 
    270 	pa = aux;
    271 	sc->sc_pc = pa->pa_pc;
    272 	sc->sc_pt = pa->pa_tag;
    273 	sc->sc_dmat = pa->pa_dmat;
    274 	LIST_INIT(&sc->sc_dmalist);
    275 	sc->sc_mch_split_buf = NULL;
    276 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    277 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    278 
    279 	aprint_normal(": AMD Geode CS5536 Audio\n");
    280 
    281 	if (pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
    282 	    &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios)) {
    283 		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
    284 		return;
    285 	}
    286 
    287 	if (pci_intr_map(pa, &ih)) {
    288 		aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
    289 		goto attach_failure_unmap;
    290 	}
    291 	intrstr = pci_intr_string(sc->sc_pc, ih, intrbuf, sizeof(intrbuf));
    292 
    293 	sc->sc_ih = pci_intr_establish_xname(sc->sc_pc, ih, IPL_AUDIO,
    294 	    gcscaudio_intr, sc, device_xname(self));
    295 	if (sc->sc_ih == NULL) {
    296 		aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
    297 		if (intrstr != NULL)
    298 			aprint_error(" at %s", intrstr);
    299 		aprint_error("\n");
    300 		goto attach_failure_unmap;
    301 	}
    302 
    303 	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
    304 
    305 
    306 	if (gcscaudio_allocate_dma(sc, sizeof(*sc->sc_prd.p_prdtables),
    307 	    (void **)&(sc->sc_prd.p_prdtables), sc->sc_prd.p_prdsegs, 1,
    308 	    &(sc->sc_prd.p_prdnseg), &(sc->sc_prd.p_prdmap)) != 0)
    309 		goto attach_failure_intr;
    310 
    311 	sc->host_if.arg = sc;
    312 	sc->host_if.attach = gcscaudio_attach_codec;
    313 	sc->host_if.read = gcscaudio_read_codec;
    314 	sc->host_if.write = gcscaudio_write_codec;
    315 	sc->host_if.reset = gcscaudio_reset_codec;
    316 	sc->host_if.spdif_event = gcscaudio_spdif_event_codec;
    317 
    318 	if ((rc = ac97_attach(&sc->host_if, self, &sc->sc_lock)) != 0) {
    319 		aprint_error_dev(sc->sc_dev,
    320 		    "can't attach codec (error=%d)\n", rc);
    321 		goto attach_failure_intr;
    322 	}
    323 
    324 	if (!pmf_device_register(self, NULL, gcscaudio_resume))
    325 		aprint_error_dev(self, "couldn't establish power handler\n");
    326 
    327 
    328 	sc->sc_nformats = 0;
    329 	gcscaudio_append_formats(sc, &gcscaudio_formats_2ch);
    330 
    331 	mutex_enter(&sc->sc_lock);
    332 	if (AC97_IS_4CH(sc->codec_if))
    333 		gcscaudio_append_formats(sc, &gcscaudio_formats_4ch);
    334 	if (AC97_IS_6CH(sc->codec_if))
    335 		gcscaudio_append_formats(sc, &gcscaudio_formats_6ch);
    336 	if (AC97_IS_FIXED_RATE(sc->codec_if)) {
    337 		for (i = 0; i < sc->sc_nformats; i++) {
    338 			sc->sc_formats[i].frequency_type = 1;
    339 			sc->sc_formats[i].frequency[0] = 48000;
    340 		}
    341 	}
    342 	mutex_exit(&sc->sc_lock);
    343 
    344 	audio_attach_mi(&gcscaudio_hw_if, sc, sc->sc_dev);
    345 	return;
    346 
    347 attach_failure_intr:
    348 	pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
    349 attach_failure_unmap:
    350 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
    351 	return;
    352 }
    353 
    354 static int
    355 gcscaudio_attach_codec(void *arg, struct ac97_codec_if *codec_if)
    356 {
    357 	struct gcscaudio_softc *sc;
    358 
    359 	sc = (struct gcscaudio_softc *)arg;
    360 	sc->codec_if = codec_if;
    361 	return 0;
    362 }
    363 
    364 static int
    365 gcscaudio_reset_codec(void *arg)
    366 {
    367 	struct gcscaudio_softc *sc;
    368 	sc = (struct gcscaudio_softc *)arg;
    369 
    370 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    371 	    ACC_CODEC_CNTL_LNK_WRM_RST |
    372 	    ACC_CODEC_CNTL_CMD_NEW);
    373 
    374 	if (gcscaudio_wait_ready_codec(sc, "reset timeout\n"))
    375 		return 1;
    376 
    377 	return 0;
    378 }
    379 
    380 static void
    381 gcscaudio_spdif_event_codec(void *arg, bool flag)
    382 {
    383 	struct gcscaudio_softc *sc;
    384 
    385 	sc = (struct gcscaudio_softc *)arg;
    386 	sc->sc_spdif = flag;
    387 }
    388 
    389 static int
    390 gcscaudio_wait_ready_codec(struct gcscaudio_softc *sc, const char *timeout_msg)
    391 {
    392 	int i;
    393 
    394 #define GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT	500
    395 	for (i = GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT; (i >= 0) &&
    396 	    (bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL) &
    397 	    ACC_CODEC_CNTL_CMD_NEW); i--)
    398 		delay(1);
    399 
    400 	if (i < 0) {
    401 		aprint_error_dev(sc->sc_dev, "%s", timeout_msg);
    402 		return 1;
    403 	}
    404 
    405 	return 0;
    406 }
    407 
    408 static int
    409 gcscaudio_write_codec(void *arg, uint8_t reg, uint16_t val)
    410 {
    411 	struct gcscaudio_softc *sc;
    412 
    413 	sc = (struct gcscaudio_softc *)arg;
    414 
    415 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    416 	    ACC_CODEC_CNTL_WRITE_CMD |
    417 	    ACC_CODEC_CNTL_CMD_NEW |
    418 	    ACC_CODEC_REG2ADDR(reg) |
    419 	    (val & ACC_CODEC_CNTL_CMD_DATA_MASK));
    420 
    421 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout\n"))
    422 		return 1;
    423 
    424 #ifdef GCSCAUDIO_CODEC_DEBUG
    425 	aprint_error_dev(sc->sc_dev, "codec write: reg=0x%02x, val=0x%04x\n",
    426 	    reg, val);
    427 #endif
    428 
    429 	return 0;
    430 }
    431 
    432 static int
    433 gcscaudio_read_codec(void *arg, uint8_t reg, uint16_t *val)
    434 {
    435 	struct gcscaudio_softc *sc;
    436 	uint32_t v;
    437 	int i;
    438 
    439 	sc = (struct gcscaudio_softc *)arg;
    440 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    441 	    ACC_CODEC_CNTL_READ_CMD | ACC_CODEC_CNTL_CMD_NEW |
    442 	    ACC_CODEC_REG2ADDR(reg));
    443 
    444 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout for reading"))
    445 		return 1;
    446 
    447 #define GCSCAUDIO_READ_CODEC_TIMEOUT	50
    448 	for (i = GCSCAUDIO_READ_CODEC_TIMEOUT; i >= 0; i--) {
    449 		v = bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_STATUS);
    450 		if ((v & ACC_CODEC_STATUS_STS_NEW) &&
    451 		    (ACC_CODEC_ADDR2REG(v) == reg))
    452 			break;
    453 
    454 		delay(10);
    455 	}
    456 
    457 	if (i < 0) {
    458 		aprint_error_dev(sc->sc_dev, "codec read timeout\n");
    459 		return 1;
    460 	}
    461 
    462 #ifdef GCSCAUDIO_CODEC_DEBUG
    463 	aprint_error_dev(sc->sc_dev, "codec read: reg=0x%02x, val=0x%04x\n",
    464 	    reg, v & ACC_CODEC_STATUS_STS_DATA_MASK);
    465 #endif
    466 
    467 	*val = v;
    468 	return 0;
    469 }
    470 
    471 static int
    472 gcscaudio_open(void *arg, int flags)
    473 {
    474 	struct gcscaudio_softc *sc;
    475 
    476 	sc = (struct gcscaudio_softc *)arg;
    477 	sc->codec_if->vtbl->lock(sc->codec_if);
    478 	return 0;
    479 }
    480 
    481 static void
    482 gcscaudio_close(void *arg)
    483 {
    484 	struct gcscaudio_softc *sc;
    485 
    486 	sc = (struct gcscaudio_softc *)arg;
    487 	sc->codec_if->vtbl->unlock(sc->codec_if);
    488 }
    489 
    490 static int
    491 gcscaudio_query_format(void *arg, audio_format_query_t *afp)
    492 {
    493 	struct gcscaudio_softc *sc;
    494 
    495 	sc = (struct gcscaudio_softc *)arg;
    496 	return audio_query_format(sc->sc_formats, sc->sc_nformats, afp);
    497 }
    498 
    499 static int
    500 gcscaudio_set_format(void *arg, int setmode,
    501                      const audio_params_t *play, const audio_params_t *rec,
    502                      audio_filter_reg_t *pfil, audio_filter_reg_t *rfil)
    503 {
    504 	struct gcscaudio_softc *sc;
    505 	int rate;
    506 	int error;
    507 
    508 	sc = (struct gcscaudio_softc *)arg;
    509 
    510 	if (setmode & AUMODE_PLAY) {
    511 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    512 			/* setup rate of DAC */
    513 			rate = play->sample_rate;
    514 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    515 			    AC97_REG_PCM_FRONT_DAC_RATE, &rate)) != 0)
    516 				return error;
    517 
    518 			/* additional rate of DAC for Surround */
    519 			rate = play->sample_rate;
    520 			if ((play->channels >= 4) &&
    521 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    522 			    AC97_REG_PCM_SURR_DAC_RATE, &rate)) != 0)
    523 				return error;
    524 
    525 			/* additional rate of DAC for LowFrequencyEffect */
    526 			rate = play->sample_rate;
    527 			if ((play->channels == 6) &&
    528 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    529 			    AC97_REG_PCM_LFE_DAC_RATE, &rate)) != 0)
    530 				return error;
    531 		}
    532 		sc->sc_play.ch_params = *rec;
    533 	}
    534 	if (setmode & AUMODE_RECORD) {
    535 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    536 			/* setup rate of ADC */
    537 			rate = rec->sample_rate;
    538 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    539 			    AC97_REG_PCM_LR_ADC_RATE, &rate)) != 0)
    540 				return error;
    541 		}
    542 		sc->sc_rec.ch_params = *rec;
    543 	}
    544 
    545 	return 0;
    546 }
    547 
    548 static int
    549 gcscaudio_round_blocksize(void *arg, int blk, int mode,
    550                           const audio_params_t *param)
    551 {
    552 
    553 	if (blk > GCSCAUDIO_PRD_SIZE_MAX)
    554 		blk = GCSCAUDIO_PRD_SIZE_MAX;
    555 	blk = rounddown(blk, param->channels * param->precision / NBBY);
    556 
    557 	return blk;
    558 }
    559 
    560 static int
    561 gcscaudio_halt_output(void *arg)
    562 {
    563 	struct gcscaudio_softc *sc;
    564 
    565 	sc = (struct gcscaudio_softc *)arg;
    566 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
    567 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    568 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_CMD,
    569 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    570 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
    571 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    572 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
    573 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    574 	sc->sc_play.ch_intr = NULL;
    575 
    576 	/* channel splitter */
    577 	sc->sc_mch_splitter = NULL;
    578 	if (sc->sc_mch_split_buf)
    579 		gcscaudio_free(sc, sc->sc_mch_split_buf, sc->sc_mch_split_size);
    580 	sc->sc_mch_split_buf = NULL;
    581 
    582 	return 0;
    583 }
    584 
    585 static int
    586 gcscaudio_halt_input(void *arg)
    587 {
    588 	struct gcscaudio_softc *sc;
    589 
    590 	sc = (struct gcscaudio_softc *)arg;
    591 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
    592 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    593 	sc->sc_rec.ch_intr = NULL;
    594 	return 0;
    595 }
    596 
    597 static int
    598 gcscaudio_getdev(void *addr, struct audio_device *retp)
    599 {
    600 	*retp = gcscaudio_device;
    601 	return 0;
    602 }
    603 
    604 static int
    605 gcscaudio_set_port(void *addr, mixer_ctrl_t *cp)
    606 {
    607 	struct gcscaudio_softc *sc;
    608 
    609 	sc = addr;
    610 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp);
    611 }
    612 
    613 static int
    614 gcscaudio_get_port(void *addr, mixer_ctrl_t *cp)
    615 {
    616 	struct gcscaudio_softc *sc;
    617 
    618 	sc = addr;
    619 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp);
    620 }
    621 
    622 static int
    623 gcscaudio_query_devinfo(void *addr, mixer_devinfo_t *dip)
    624 {
    625 	struct gcscaudio_softc *sc;
    626 
    627 	sc = addr;
    628 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, dip);
    629 }
    630 
    631 static void *
    632 gcscaudio_malloc(void *arg, int direction, size_t size)
    633 {
    634 	struct gcscaudio_softc *sc;
    635 	struct gcscaudio_dma *p;
    636 	int error;
    637 
    638 	sc = (struct gcscaudio_softc *)arg;
    639 
    640 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
    641 	p->size = size;
    642 
    643 	error = gcscaudio_allocate_dma(sc, size, &p->addr,
    644 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]), &p->nseg, &p->map);
    645 	if (error) {
    646 		kmem_free(p, sizeof(*p));
    647 		return NULL;
    648 	}
    649 
    650 	LIST_INSERT_HEAD(&sc->sc_dmalist, p, list);
    651 	return p->addr;
    652 }
    653 
    654 static void
    655 gcscaudio_free(void *arg, void *ptr, size_t size)
    656 {
    657 	struct gcscaudio_softc *sc;
    658 	struct gcscaudio_dma *p;
    659 
    660 	sc = (struct gcscaudio_softc *)arg;
    661 
    662 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    663 		if (p->addr == ptr) {
    664 			bus_dmamap_unload(sc->sc_dmat, p->map);
    665 			bus_dmamap_destroy(sc->sc_dmat, p->map);
    666 			bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    667 			bus_dmamem_free(sc->sc_dmat, p->segs, p->nseg);
    668 
    669 			LIST_REMOVE(p, list);
    670 			kmem_free(p, sizeof(*p));
    671 			break;
    672 		}
    673 	}
    674 }
    675 
    676 static size_t
    677 gcscaudio_round_buffersize(void *addr, int direction, size_t size)
    678 {
    679 	if (size > GCSCAUDIO_BUFSIZE_MAX)
    680 		size = GCSCAUDIO_BUFSIZE_MAX;
    681 
    682 	return size;
    683 }
    684 
    685 static int
    686 gcscaudio_get_props(void *addr)
    687 {
    688 
    689 	return AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE |
    690 	    AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
    691 }
    692 
    693 static int
    694 build_prdtables(struct gcscaudio_softc *sc, int prdidx,
    695                 void *addr, size_t size, int blksize, int blklen, int blkoff)
    696 {
    697 	struct gcscaudio_dma *p;
    698 	struct acc_prd *prdp;
    699 	bus_addr_t paddr;
    700 	int i;
    701 
    702 	/* get physical address of start */
    703 	paddr = (bus_addr_t)0;
    704 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    705 		if (p->addr == addr) {
    706 			paddr = p->map->dm_segs[0].ds_addr;
    707 			break;
    708 		}
    709 	}
    710 	if (!paddr) {
    711 		aprint_error_dev(sc->sc_dev, "bad addr %p\n", addr);
    712 		return EINVAL;
    713 	}
    714 
    715 #define PRDADDR(prdidx,idx) \
    716 	(sc->sc_prd.p_prdmap->dm_segs[0].ds_addr) + sizeof(struct acc_prd) * \
    717 	(((prdidx) * GCSCAUDIO_NPRDTABLE) + (idx))
    718 
    719 	/*
    720 	 * build PRD table
    721 	 *   prdtbl[] = <PRD0>, <PRD1>, <PRD2>, ..., <PRDn>, <jmp to PRD0>
    722 	 */
    723 	prdp = sc->sc_prd.p_prdtables->prdtbl[prdidx];
    724 	for (i = 0; size > 0; size -= blksize, i++) {
    725 		prdp[i].address = paddr + blksize * i + blkoff;
    726 		prdp[i].ctrlsize =
    727 		    (size < blklen ? size : blklen) | ACC_BMx_PRD_CTRL_EOP;
    728 	}
    729 	prdp[i].address = PRDADDR(prdidx, 0);
    730 	prdp[i].ctrlsize = ACC_BMx_PRD_CTRL_JMP;
    731 
    732 	bus_dmamap_sync(sc->sc_dmat, sc->sc_prd.p_prdmap, 0,
    733 	    sizeof(struct acc_prd) * i, BUS_DMASYNC_PREWRITE);
    734 
    735 	return 0;
    736 }
    737 
    738 static void
    739 split_buffer_4ch(void *dst, void *src, int size, int blksize)
    740 {
    741 	int left, i;
    742 	uint16_t *s, *d;
    743 
    744 	/*
    745 	 * src[blk0]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    746 	 * src[blk1]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    747 	 * src[blk2]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    748 	 *     :
    749 	 *
    750 	 *   rearrange to
    751 	 *
    752 	 * src[blk0]: L,R,L,R,L,R,L,R,..
    753 	 * src[blk1]: L,R,L,R,L,R,L,R,..
    754 	 * src[blk2]: L,R,L,R,L,R,L,R,..
    755 	 *     :
    756 	 * dst[blk0]: SL,SR,SL,SR,SL,SR,SL,SR,..
    757 	 * dst[blk1]: SL,SR,SL,SR,SL,SR,SL,SR,..
    758 	 * dst[blk2]: SL,SR,SL,SR,SL,SR,SL,SR,..
    759 	 *     :
    760 	 */
    761 	for (left = size; left > 0; left -= blksize) {
    762 		s = (uint16_t *)src;
    763 		d = (uint16_t *)dst;
    764 		for (i = 0; i < blksize / sizeof(uint16_t) / 4; i++) {
    765 			/* L,R,SL,SR -> SL,SR */
    766 			s++;
    767 			s++;
    768 			*d++ = *s++;
    769 			*d++ = *s++;
    770 		}
    771 
    772 		s = (uint16_t *)src;
    773 		d = (uint16_t *)src;
    774 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    775 			/* L,R,SL,SR -> L,R */
    776 			*d++ = *s++;
    777 			*d++ = *s++;
    778 			s++;
    779 			s++;
    780 		}
    781 
    782 		src = (char *)src + blksize;
    783 		dst = (char *)dst + blksize;
    784 	}
    785 }
    786 
    787 static void
    788 split_buffer_6ch(void *dst, void *src, int size, int blksize)
    789 {
    790 	int left, i;
    791 	uint16_t *s, *d, *dc, *dl;
    792 
    793 	/*
    794 	 * by default, treat as WAV style 5.1ch order
    795 	 *   5.1ch(WAV): L R C LFE SL SR
    796 	 *   5.1ch(AAC): C L R SL SR LFE
    797 	 *        :
    798 	 */
    799 
    800 	/*
    801 	 * src[blk0]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    802 	 * src[blk1]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    803 	 * src[blk2]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    804 	 *     :
    805 	 * src[N-1] : L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    806 	 *
    807 	 *   rearrange to
    808 	 *
    809 	 * src[blk0]: L,R,L,R,..
    810 	 * src[blk1]: L,R,L,R,..
    811 	 * src[blk2]: L,R,L,R,..
    812 	 *     :
    813 	 *
    814 	 * dst[blk0]: SL,SR,SL,SR,..
    815 	 * dst[blk1]: SL,SR,SL,SR,..
    816 	 * dst[blk2]: SL,SR,SL,SR,..
    817 	 *     :
    818 	 *
    819 	 * dst[N/2+0]: C,C,C,..
    820 	 * dst[N/2+1]: C,C,C,..
    821 	 *     :
    822 	 *
    823 	 * dst[N/2+N/4+0]: LFE,LFE,LFE,..
    824 	 * dst[N/2+N/4+1]: LFE,LFE,LFE,..
    825 	 *     :
    826 	 */
    827 
    828 	for (left = size; left > 0; left -= blksize) {
    829 		s = (uint16_t *)src;
    830 		d = (uint16_t *)dst;
    831 		dc = (uint16_t *)((char *)dst + blksize / 2);
    832 		dl = (uint16_t *)((char *)dst + blksize / 2 + blksize / 4);
    833 		for (i = 0; i < blksize / sizeof(uint16_t) / 6; i++) {
    834 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    835 			/*
    836 			 * AAC: [C,L,R,SL,SR,LFE]
    837 			 *  => [SL,SR]
    838 			 *  => [C]
    839 			 *  => [LFE]
    840 			 */
    841 			*dc++ = s[0];	/* C */
    842 			*dl++ = s[5];	/* LFE */
    843 			*d++ = s[3];	/* SL */
    844 			*d++ = s[4];	/* SR */
    845 #else
    846 			/*
    847 			 * WAV: [L,R,C,LFE,SL,SR]
    848 			 *  => [SL,SR]
    849 			 *  => [C]
    850 			 *  => [LFE]
    851 			 */
    852 			*dc++ = s[2];	/* C */
    853 			*dl++ = s[3];	/* LFE */
    854 			*d++ = s[4];	/* SL */
    855 			*d++ = s[5];	/* SR */
    856 #endif
    857 			s += 6;
    858 		}
    859 
    860 		s = (uint16_t *)src;
    861 		d = (uint16_t *)src;
    862 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    863 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    864 			/* AAC: [C,L,R,SL,SR,LFE] => [L,R] */
    865 			*d++ = s[1];
    866 			*d++ = s[2];
    867 #else
    868 			/* WAV: [L,R,C,LFE,SL,SR] => [L,R] */
    869 			*d++ = s[0];
    870 			*d++ = s[1];
    871 #endif
    872 			s += 6;
    873 		}
    874 
    875 		src = (char *)src + blksize;
    876 		dst = (char *)dst + blksize;
    877 	}
    878 }
    879 
    880 static void
    881 channel_splitter(struct gcscaudio_softc *sc)
    882 {
    883 	int splitsize, left;
    884 	void *src, *dst;
    885 
    886 	if (sc->sc_mch_splitter == NULL)
    887 		return;
    888 
    889 	left = sc->sc_mch_split_size - sc->sc_mch_split_off;
    890 	splitsize = sc->sc_mch_split_blksize;
    891 	if (left < splitsize)
    892 		splitsize = left;
    893 
    894 	src = (char *)sc->sc_mch_split_start + sc->sc_mch_split_off;
    895 	dst = (char *)sc->sc_mch_split_buf + sc->sc_mch_split_off;
    896 
    897 	sc->sc_mch_splitter(dst, src, splitsize, sc->sc_mch_split_blksize);
    898 
    899 	sc->sc_mch_split_off += sc->sc_mch_split_blksize;
    900 	if (sc->sc_mch_split_off >= sc->sc_mch_split_size)
    901 		sc->sc_mch_split_off = 0;
    902 }
    903 
    904 static int
    905 gcscaudio_trigger_output(void *addr, void *start, void *end, int blksize,
    906                          void (*intr)(void *), void *arg,
    907                          const audio_params_t *param)
    908 {
    909 	struct gcscaudio_softc *sc;
    910 	size_t size;
    911 
    912 	sc = (struct gcscaudio_softc *)addr;
    913 	sc->sc_play.ch_intr = intr;
    914 	sc->sc_play.ch_intr_arg = arg;
    915 	size = (char *)end - (char *)start;
    916 
    917 	switch (sc->sc_play.ch_params.channels) {
    918 	case 2:
    919 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
    920 		    blksize, 0))
    921 			return EINVAL;
    922 
    923 		if (!AC97_IS_4CH(sc->codec_if)) {
    924 			/*
    925 			 * output 2ch PCM to FRONT.LR(BM0)
    926 			 *
    927 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
    928 			 *
    929 			 */
    930 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
    931 			    PRDADDR(PRD_TABLE_FRONT, 0));
    932 
    933 			/* start DMA transfer */
    934 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
    935 			    ACC_BMx_CMD_WRITE |
    936 			    ACC_BMx_CMD_BYTE_ORD_EL |
    937 			    ACC_BMx_CMD_BM_CTL_ENABLE);
    938 		} else {
    939 			/*
    940 			 * output same PCM to FRONT.LR(BM0) and SURROUND.LR(BM6).
    941 			 * CENTER(BM4) and LFE(BM7) doesn't sound.
    942 			 *
    943 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
    944 			 *                             BM6: (same of BM0)
    945 			 *                             BM4: none
    946 			 *                             BM7: none
    947 			 */
    948 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
    949 			    PRDADDR(PRD_TABLE_FRONT, 0));
    950 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
    951 			    PRDADDR(PRD_TABLE_FRONT, 0));
    952 
    953 			/* start DMA transfer */
    954 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
    955 			    ACC_BMx_CMD_WRITE |
    956 			    ACC_BMx_CMD_BYTE_ORD_EL |
    957 			    ACC_BMx_CMD_BM_CTL_ENABLE);
    958 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
    959 			    ACC_BMx_CMD_WRITE |
    960 			    ACC_BMx_CMD_BYTE_ORD_EL |
    961 			    ACC_BMx_CMD_BM_CTL_ENABLE);
    962 		}
    963 		break;
    964 	case 4:
    965 		/*
    966 		 * output 4ch PCM split to FRONT.LR(BM0) and SURROUND.LR(BM6).
    967 		 * CENTER(BM4) and LFE(BM7) doesn't sound.
    968 		 *
    969 		 * rearrange ordered channel to continuous per channel
    970 		 *
    971 		 *   4ch: L,R,SL,SR,L,R,SL,SR,... => BM0: L,R,L,R,...
    972 		 *                                   BM6: SL,SR,SL,SR,...
    973 		 *                                   BM4: none
    974 		 *                                   BM7: none
    975 		 */
    976 		if (sc->sc_mch_split_buf)
    977 			gcscaudio_free(sc, sc->sc_mch_split_buf,
    978 			    sc->sc_mch_split_size);
    979 
    980 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
    981 		    size)) == NULL)
    982 			return ENOMEM;
    983 
    984 		/*
    985 		 * 1st and 2nd blocks are split immediately.
    986 		 * Other blocks will be split synchronous with intr.
    987 		 */
    988 		split_buffer_4ch(sc->sc_mch_split_buf, start, blksize * 2,
    989 		    blksize);
    990 
    991 		sc->sc_mch_split_start = start;
    992 		sc->sc_mch_split_size = size;
    993 		sc->sc_mch_split_blksize = blksize;
    994 		sc->sc_mch_split_off = (blksize * 2) % size;
    995 		sc->sc_mch_splitter = split_buffer_4ch;	/* split function */
    996 
    997 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
    998 		    blksize / 2, 0))
    999 			return EINVAL;
   1000 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1001 		    size, blksize, blksize / 2, 0))
   1002 			return EINVAL;
   1003 
   1004 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1005 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1006 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1007 		    PRDADDR(PRD_TABLE_SURR, 0));
   1008 
   1009 		/* start DMA transfer */
   1010 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1011 		    ACC_BMx_CMD_WRITE |
   1012 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1013 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1014 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1015 		    ACC_BMx_CMD_WRITE |
   1016 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1017 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1018 		break;
   1019 	case 6:
   1020 		/*
   1021 		 * output 6ch PCM split to
   1022 		 * FRONT.LR(BM0), SURROUND.LR(BM6), CENTER(BM4) and LFE(BM7)
   1023 		 *
   1024 		 * rearrange ordered channel to continuous per channel
   1025 		 *
   1026 		 *   5.1ch: L,R,C,LFE,SL,SR,... => BM0: L,R,...
   1027 		 *                                 BM4: C,...
   1028 		 *                                 BM6: SL,SR,...
   1029 		 *                                 BM7: LFE,...
   1030 		 *
   1031 		 */
   1032 		if (sc->sc_mch_split_buf)
   1033 			gcscaudio_free(sc, sc->sc_mch_split_buf,
   1034 			    sc->sc_mch_split_size);
   1035 
   1036 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
   1037 		    size)) == NULL)
   1038 			return ENOMEM;
   1039 
   1040 		/*
   1041 		 * 1st and 2nd blocks are split immediately.
   1042 		 * Other block will be split synchronous with intr.
   1043 		 */
   1044 		split_buffer_6ch(sc->sc_mch_split_buf, start, blksize * 2,
   1045 		    blksize);
   1046 
   1047 		sc->sc_mch_split_start = start;
   1048 		sc->sc_mch_split_size = size;
   1049 		sc->sc_mch_split_blksize = blksize;
   1050 		sc->sc_mch_split_off = (blksize * 2) % size;
   1051 		sc->sc_mch_splitter = split_buffer_6ch;	/* split function */
   1052 
   1053 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
   1054 		    blksize / 3, 0))
   1055 			return EINVAL;
   1056 		if (build_prdtables(sc, PRD_TABLE_CENTER, sc->sc_mch_split_buf,
   1057 		    size, blksize, blksize / 3, blksize / 2))
   1058 			return EINVAL;
   1059 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1060 		    size, blksize, blksize / 3, 0))
   1061 			return EINVAL;
   1062 		if (build_prdtables(sc, PRD_TABLE_LFE, sc->sc_mch_split_buf,
   1063 		    size, blksize, blksize / 3, blksize / 2 + blksize / 4))
   1064 			return EINVAL;
   1065 
   1066 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1067 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1068 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_PRD,
   1069 		    PRDADDR(PRD_TABLE_CENTER, 0));
   1070 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1071 		    PRDADDR(PRD_TABLE_SURR, 0));
   1072 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_PRD,
   1073 		    PRDADDR(PRD_TABLE_LFE, 0));
   1074 
   1075 		/* start DMA transfer */
   1076 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1077 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1078 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1079 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM4_CMD,
   1080 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1081 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1082 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1083 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1084 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1085 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
   1086 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1087 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1088 		break;
   1089 	}
   1090 
   1091 	return 0;
   1092 }
   1093 
   1094 static int
   1095 gcscaudio_trigger_input(void *addr, void *start, void *end, int blksize,
   1096                         void (*intr)(void *), void *arg,
   1097                         const audio_params_t *param)
   1098 {
   1099 	struct gcscaudio_softc *sc;
   1100 	size_t size;
   1101 
   1102 	sc = (struct gcscaudio_softc *)addr;
   1103 	sc->sc_rec.ch_intr = intr;
   1104 	sc->sc_rec.ch_intr_arg = arg;
   1105 	size = (char *)end - (char *)start;
   1106 
   1107 	if (build_prdtables(sc, PRD_TABLE_REC, start, size, blksize, blksize, 0))
   1108 		return EINVAL;
   1109 
   1110 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_PRD,
   1111 	    PRDADDR(PRD_TABLE_REC, 0));
   1112 
   1113 	/* start transfer */
   1114 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
   1115 	    ACC_BMx_CMD_READ |
   1116 	    ACC_BMx_CMD_BYTE_ORD_EL |
   1117 	    ACC_BMx_CMD_BM_CTL_ENABLE);
   1118 
   1119 	return 0;
   1120 }
   1121 
   1122 static void
   1123 gcscaudio_get_locks(void *arg, kmutex_t **intr, kmutex_t **thread)
   1124 {
   1125 	struct gcscaudio_softc *sc;
   1126 
   1127 	sc = (struct gcscaudio_softc *)arg;
   1128 
   1129 	*intr = &sc->sc_intr_lock;
   1130 	*thread = &sc->sc_lock;
   1131 }
   1132 
   1133 static int
   1134 gcscaudio_intr(void *arg)
   1135 {
   1136 	struct gcscaudio_softc *sc;
   1137 	uint16_t intr;
   1138 	uint8_t bmstat;
   1139 	int nintr;
   1140 
   1141 	nintr = 0;
   1142 	sc = (struct gcscaudio_softc *)arg;
   1143 
   1144 	mutex_spin_enter(&sc->sc_intr_lock);
   1145 
   1146 	intr = bus_space_read_2(sc->sc_iot, sc->sc_ioh, ACC_IRQ_STATUS);
   1147 	if (intr == 0)
   1148 		goto done;
   1149 
   1150 	/* Front output */
   1151 	if (intr & ACC_IRQ_STATUS_BM0_IRQ_STS) {
   1152 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_STATUS);
   1153 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1154 			aprint_normal_dev(sc->sc_dev, "BM0: Bus Master Error\n");
   1155 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1156 			aprint_normal_dev(sc->sc_dev, "BM0: NO End of Page?\n");
   1157 
   1158 		if (sc->sc_play.ch_intr) {
   1159 			sc->sc_play.ch_intr(sc->sc_play.ch_intr_arg);
   1160 			channel_splitter(sc);
   1161 		}
   1162 		nintr++;
   1163 	}
   1164 
   1165 	/* Center output */
   1166 	if (intr & ACC_IRQ_STATUS_BM4_IRQ_STS) {
   1167 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM4_STATUS);
   1168 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1169 			aprint_normal_dev(sc->sc_dev, "BM4: Bus Master Error\n");
   1170 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1171 			aprint_normal_dev(sc->sc_dev, "BM4: NO End of Page?\n");
   1172 
   1173 		nintr++;
   1174 	}
   1175 
   1176 	/* Surround output */
   1177 	if (intr & ACC_IRQ_STATUS_BM6_IRQ_STS) {
   1178 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_STATUS);
   1179 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1180 			aprint_normal_dev(sc->sc_dev, "BM6: Bus Master Error\n");
   1181 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1182 			aprint_normal_dev(sc->sc_dev, "BM6: NO End of Page?\n");
   1183 
   1184 		nintr++;
   1185 	}
   1186 
   1187 	/* LowFrequencyEffect output */
   1188 	if (intr & ACC_IRQ_STATUS_BM7_IRQ_STS) {
   1189 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_STATUS);
   1190 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1191 			aprint_normal_dev(sc->sc_dev, "BM7: Bus Master Error\n");
   1192 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1193 			aprint_normal_dev(sc->sc_dev, "BM7: NO End of Page?\n");
   1194 
   1195 		nintr++;
   1196 	}
   1197 
   1198 	/* record */
   1199 	if (intr & ACC_IRQ_STATUS_BM1_IRQ_STS) {
   1200 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_STATUS);
   1201 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1202 			aprint_normal_dev(sc->sc_dev, "BM1: Bus Master Error\n");
   1203 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1204 			aprint_normal_dev(sc->sc_dev, "BM1: NO End of Page?\n");
   1205 
   1206 		if (sc->sc_rec.ch_intr) {
   1207 			sc->sc_rec.ch_intr(sc->sc_rec.ch_intr_arg);
   1208 		}
   1209 		nintr++;
   1210 	}
   1211 
   1212 #ifdef GCSCAUDIO_DEBUG
   1213 	if (intr & ACC_IRQ_STATUS_IRQ_STS)
   1214 		aprint_normal_dev(sc->sc_dev, "Codec GPIO IRQ Status\n");
   1215 	if (intr & ACC_IRQ_STATUS_WU_IRQ_STS)
   1216 		aprint_normal_dev(sc->sc_dev, "Codec GPIO Wakeup IRQ Status\n");
   1217 	if (intr & ACC_IRQ_STATUS_BM2_IRQ_STS)
   1218 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 2 IRQ Status\n");
   1219 	if (intr & ACC_IRQ_STATUS_BM3_IRQ_STS)
   1220 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 3 IRQ Status\n");
   1221 	if (intr & ACC_IRQ_STATUS_BM5_IRQ_STS)
   1222 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 5 IRQ Status\n");
   1223 #endif
   1224 
   1225 done:
   1226 	mutex_spin_exit(&sc->sc_intr_lock);
   1227 
   1228 	return nintr ? 1 : 0;
   1229 }
   1230 
   1231 static bool
   1232 gcscaudio_resume(device_t dv, const pmf_qual_t *qual)
   1233 {
   1234 	struct gcscaudio_softc *sc = device_private(dv);
   1235 
   1236 	gcscaudio_reset_codec(sc);
   1237 	DELAY(1000);
   1238 	(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
   1239 
   1240 	return true;
   1241 }
   1242 
   1243 static int
   1244 gcscaudio_allocate_dma(struct gcscaudio_softc *sc, size_t size, void **addrp,
   1245                        bus_dma_segment_t *seglist, int nseg, int *rsegp,
   1246                        bus_dmamap_t *mapp)
   1247 {
   1248 	int error;
   1249 
   1250 	if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, seglist,
   1251 	    nseg, rsegp, BUS_DMA_WAITOK)) != 0) {
   1252 		aprint_error_dev(sc->sc_dev,
   1253 		    "unable to allocate DMA buffer, error=%d\n", error);
   1254 		goto fail_alloc;
   1255 	}
   1256 
   1257 	if ((error = bus_dmamem_map(sc->sc_dmat, seglist, nseg, size, addrp,
   1258 	    BUS_DMA_WAITOK | BUS_DMA_COHERENT)) != 0) {
   1259 		aprint_error_dev(sc->sc_dev,
   1260 		    "unable to map DMA buffer, error=%d\n",
   1261 		    error);
   1262 		goto fail_map;
   1263 	}
   1264 
   1265 	if ((error = bus_dmamap_create(sc->sc_dmat, size, nseg, size, 0,
   1266 	    BUS_DMA_WAITOK, mapp)) != 0) {
   1267 		aprint_error_dev(sc->sc_dev,
   1268 		    "unable to create DMA map, error=%d\n", error);
   1269 		goto fail_create;
   1270 	}
   1271 
   1272 	if ((error = bus_dmamap_load(sc->sc_dmat, *mapp, *addrp, size, NULL,
   1273 	    BUS_DMA_WAITOK)) != 0) {
   1274 		aprint_error_dev(sc->sc_dev,
   1275 		    "unable to load DMA map, error=%d\n", error);
   1276 		goto fail_load;
   1277 	}
   1278 
   1279 	return 0;
   1280 
   1281 fail_load:
   1282 	bus_dmamap_destroy(sc->sc_dmat, *mapp);
   1283 fail_create:
   1284 	bus_dmamem_unmap(sc->sc_dmat, *addrp, size);
   1285 fail_map:
   1286 	bus_dmamem_free(sc->sc_dmat, seglist, nseg);
   1287 fail_alloc:
   1288 	return error;
   1289 }
   1290