Home | History | Annotate | Line # | Download | only in pci
gcscaudio.c revision 1.9
      1 /*	$NetBSD: gcscaudio.c,v 1.9 2011/11/24 03:35:59 mrg Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008 SHIMIZU Ryo <ryo (at) nerv.org>
      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 1.9 2011/11/24 03:35:59 mrg 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_if.h>
     43 #include <dev/mulaw.h>
     44 #include <dev/auconv.h>
     45 #include <dev/ic/ac97reg.h>
     46 #include <dev/ic/ac97var.h>
     47 
     48 #include <dev/pci/gcscaudioreg.h>
     49 
     50 
     51 #define	GCSCAUDIO_NPRDTABLE	256	/* including a JMP-PRD for loop */
     52 #define	GCSCAUDIO_PRD_SIZE_MAX	65532	/* limited by CS5536 Controller */
     53 #define	GCSCAUDIO_BUFSIZE_MAX	(GCSCAUDIO_PRD_SIZE_MAX * (GCSCAUDIO_NPRDTABLE - 1))
     54 
     55 struct gcscaudio_prd {
     56 	/* PRD table for play/rec */
     57 	struct gcscaudio_prdtables {
     58 #define	PRD_TABLE_FRONT		0
     59 #define	PRD_TABLE_SURR		1
     60 #define	PRD_TABLE_CENTER	2
     61 #define	PRD_TABLE_LFE		3
     62 #define	PRD_TABLE_REC		4
     63 #define	PRD_TABLE_MAX		5
     64 		struct acc_prd prdtbl[PRD_TABLE_MAX][GCSCAUDIO_NPRDTABLE];
     65 	} *p_prdtables;
     66 	bus_dmamap_t p_prdmap;
     67 	bus_dma_segment_t p_prdsegs[1];
     68 	int p_prdnseg;
     69 };
     70 
     71 struct gcscaudio_dma {
     72 	LIST_ENTRY(gcscaudio_dma) list;
     73 	bus_dmamap_t map;
     74 	void *addr;
     75 	size_t size;
     76 	bus_dma_segment_t segs[1];
     77 	int nseg;
     78 };
     79 
     80 struct gcscaudio_softc_ch {
     81 	void (*ch_intr)(void *);
     82 	void *ch_intr_arg;
     83 	struct audio_params ch_params;
     84 };
     85 
     86 struct gcscaudio_softc {
     87 	struct device sc_dev;
     88 	kmutex_t sc_lock;
     89 	kmutex_t sc_intr_lock;
     90 	pci_chipset_tag_t sc_pc;
     91 	pcitag_t sc_pt;
     92 	void *sc_ih;
     93 	bus_space_tag_t sc_iot;
     94 	bus_space_handle_t sc_ioh;
     95 	bus_size_t sc_ios;
     96 	bus_dma_tag_t sc_dmat;
     97 
     98 	/* allocated DMA buffer list */
     99 	LIST_HEAD(, gcscaudio_dma) sc_dmalist;
    100 
    101 #define GCSCAUDIO_MAXFORMATS	4
    102 	struct audio_format sc_formats[GCSCAUDIO_MAXFORMATS];
    103 	int sc_nformats;
    104 	struct audio_encoding_set *sc_encodings;
    105 
    106 	/* AC97 codec */
    107 	struct ac97_host_if host_if;
    108 	struct ac97_codec_if *codec_if;
    109 
    110 	/* input, output channels */
    111 	struct gcscaudio_softc_ch sc_play;
    112 	struct gcscaudio_softc_ch sc_rec;
    113 	struct gcscaudio_prd sc_prd;
    114 
    115 	/* multi channel splitter work; {4,6}ch stream to {2,4} DMA buffers */
    116 	void *sc_mch_split_buf;
    117 	void *sc_mch_split_start;
    118 	int sc_mch_split_off;
    119 	int sc_mch_split_size;
    120 	int sc_mch_split_blksize;
    121 	void (*sc_mch_splitter)(void *, void *, int, int);
    122 	bool sc_spdif;
    123 };
    124 
    125 /* for cfattach */
    126 static int gcscaudio_match(device_t, cfdata_t, void *);
    127 static void gcscaudio_attach(device_t, device_t, void *);
    128 
    129 /* for audio_hw_if */
    130 static int gcscaudio_open(void *, int);
    131 static void gcscaudio_close(void *);
    132 static int gcscaudio_query_encoding(void *, struct audio_encoding *);
    133 static int gcscaudio_set_params(void *, int, int, audio_params_t *,
    134                                 audio_params_t *, stream_filter_list_t *,
    135                                 stream_filter_list_t *);
    136 static int gcscaudio_round_blocksize(void *, int, int, const audio_params_t *);
    137 static int gcscaudio_halt_output(void *);
    138 static int gcscaudio_halt_input(void *);
    139 static int gcscaudio_getdev(void *, struct audio_device *);
    140 static int gcscaudio_set_port(void *, mixer_ctrl_t *);
    141 static int gcscaudio_get_port(void *, mixer_ctrl_t *);
    142 static int gcscaudio_query_devinfo(void *, mixer_devinfo_t *);
    143 static void *gcscaudio_malloc(void *, int, size_t);
    144 static void gcscaudio_free(void *, void *, size_t);
    145 static size_t gcscaudio_round_buffersize(void *, int, size_t);
    146 static paddr_t gcscaudio_mappage(void *, void *, off_t, int);
    147 static int gcscaudio_get_props(void *);
    148 static int gcscaudio_trigger_output(void *, void *, void *, int,
    149                                     void (*)(void *), void *,
    150                                     const audio_params_t *);
    151 static int gcscaudio_trigger_input(void *, void *, void *, int,
    152                                    void (*)(void *), void *,
    153                                    const audio_params_t *);
    154 static void gcscaudio_get_locks(void *, kmutex_t **, kmutex_t **);
    155 static bool gcscaudio_resume(device_t, const pmf_qual_t *);
    156 static int gcscaudio_intr(void *);
    157 
    158 /* for codec_if */
    159 static int gcscaudio_attach_codec(void *, struct ac97_codec_if *);
    160 static int gcscaudio_write_codec(void *, uint8_t, uint16_t);
    161 static int gcscaudio_read_codec(void *, uint8_t, uint16_t *);
    162 static int gcscaudio_reset_codec(void *);
    163 static void gcscaudio_spdif_event_codec(void *, bool);
    164 
    165 /* misc */
    166 static int gcscaudio_append_formats(struct gcscaudio_softc *,
    167                                     const struct audio_format *);
    168 static int gcscaudio_wait_ready_codec(struct gcscaudio_softc *sc, const char *);
    169 static int gcscaudio_set_params_ch(struct gcscaudio_softc *,
    170                                    struct gcscaudio_softc_ch *, int,
    171                                    audio_params_t *, stream_filter_list_t *);
    172 static int gcscaudio_allocate_dma(struct gcscaudio_softc *, size_t, void **,
    173                                   bus_dma_segment_t *, int, int *,
    174                                   bus_dmamap_t *);
    175 
    176 
    177 CFATTACH_DECL(gcscaudio, sizeof (struct gcscaudio_softc),
    178     gcscaudio_match, gcscaudio_attach, NULL, NULL);
    179 
    180 
    181 static struct audio_device gcscaudio_device = {
    182 	"AMD Geode CS5536",
    183 	"",
    184 	"gcscaudio"
    185 };
    186 
    187 static const struct audio_hw_if gcscaudio_hw_if = {
    188 	.open			= gcscaudio_open,
    189 	.close			= gcscaudio_close,
    190 	.drain			= NULL,
    191 	.query_encoding		= gcscaudio_query_encoding,
    192 	.set_params		= gcscaudio_set_params,
    193 	.round_blocksize	= gcscaudio_round_blocksize,
    194 	.commit_settings	= NULL,
    195 	.init_output		= NULL,
    196 	.init_input		= NULL,
    197 	.start_output		= NULL,
    198 	.start_input		= NULL,
    199 	.halt_output		= gcscaudio_halt_output,
    200 	.halt_input		= gcscaudio_halt_input,
    201 	.speaker_ctl		= NULL,
    202 	.getdev			= gcscaudio_getdev,
    203 	.setfd			= NULL,
    204 	.set_port		= gcscaudio_set_port,
    205 	.get_port		= gcscaudio_get_port,
    206 	.query_devinfo		= gcscaudio_query_devinfo,
    207 	.allocm			= gcscaudio_malloc,
    208 	.freem			= gcscaudio_free,
    209 	.round_buffersize	= gcscaudio_round_buffersize,
    210 	.mappage		= gcscaudio_mappage,
    211 	.get_props		= gcscaudio_get_props,
    212 	.trigger_output		= gcscaudio_trigger_output,
    213 	.trigger_input		= gcscaudio_trigger_input,
    214 	.dev_ioctl		= NULL,
    215 	.get_locks		= gcscaudio_get_locks,
    216 };
    217 
    218 static const struct audio_format gcscaudio_formats_2ch = {
    219 	NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    220 	2, AUFMT_STEREO, 0, {8000, 48000}
    221 };
    222 
    223 static const struct audio_format gcscaudio_formats_4ch = {
    224 	NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    225 	4, AUFMT_SURROUND4, 0, {8000, 48000}
    226 };
    227 
    228 static const struct audio_format gcscaudio_formats_6ch = {
    229 	NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    230 	6, AUFMT_DOLBY_5_1, 0, {8000, 48000}
    231 };
    232 
    233 static int
    234 gcscaudio_match(device_t parent, cfdata_t match, void *aux)
    235 {
    236 	struct pci_attach_args *pa;
    237 
    238 	pa = (struct pci_attach_args *)aux;
    239 	if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD) &&
    240 	    (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_CS5536_AUDIO))
    241 		return 1;
    242 
    243 	return 0;
    244 }
    245 
    246 static int
    247 gcscaudio_append_formats(struct gcscaudio_softc *sc,
    248                          const struct audio_format *format)
    249 {
    250 	if (sc->sc_nformats >= GCSCAUDIO_MAXFORMATS) {
    251 		aprint_error_dev(&sc->sc_dev, "too many formats\n");
    252 		return EINVAL;
    253 	}
    254 	sc->sc_formats[sc->sc_nformats++] = *format;
    255 	return 0;
    256 }
    257 
    258 static void
    259 gcscaudio_attach(device_t parent, device_t self, void *aux)
    260 {
    261 	struct gcscaudio_softc *sc;
    262 	struct pci_attach_args *pa;
    263 	const char *intrstr;
    264 	pci_intr_handle_t ih;
    265 	int rc, i;
    266 
    267 	sc = device_private(self);
    268 
    269 	aprint_naive(": Audio controller\n");
    270 
    271 	pa = aux;
    272 	sc->sc_pc = pa->pa_pc;
    273 	sc->sc_pt = pa->pa_tag;
    274 	sc->sc_dmat = pa->pa_dmat;
    275 	LIST_INIT(&sc->sc_dmalist);
    276 	sc->sc_mch_split_buf = NULL;
    277 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    278 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    279 
    280 	aprint_normal(": AMD Geode CS5536 Audio\n");
    281 
    282 	if (pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
    283 	    &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios)) {
    284 		aprint_error_dev(&sc->sc_dev, "can't map i/o space\n");
    285 		return;
    286 	}
    287 
    288 	if (pci_intr_map(pa, &ih)) {
    289 		aprint_error_dev(&sc->sc_dev, "couldn't map interrupt\n");
    290 		goto attach_failure_unmap;
    291 	}
    292 	intrstr = pci_intr_string(sc->sc_pc, ih);
    293 
    294 	sc->sc_ih = pci_intr_establish(sc->sc_pc, ih, IPL_AUDIO,
    295 	    gcscaudio_intr, sc);
    296 	if (sc->sc_ih == NULL) {
    297 		aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt");
    298 		if (intrstr != NULL)
    299 			aprint_error(" at %s", intrstr);
    300 		aprint_error("\n");
    301 		goto attach_failure_unmap;
    302 	}
    303 
    304 	aprint_normal_dev(&sc->sc_dev, "interrupting at %s\n", intrstr);
    305 
    306 
    307 	if (gcscaudio_allocate_dma(sc, sizeof(*sc->sc_prd.p_prdtables),
    308 	    (void **)&(sc->sc_prd.p_prdtables), sc->sc_prd.p_prdsegs, 1,
    309 	    &(sc->sc_prd.p_prdnseg), &(sc->sc_prd.p_prdmap)) != 0)
    310 		goto attach_failure_intr;
    311 
    312 	sc->host_if.arg = sc;
    313 	sc->host_if.attach = gcscaudio_attach_codec;
    314 	sc->host_if.read = gcscaudio_read_codec;
    315 	sc->host_if.write = gcscaudio_write_codec;
    316 	sc->host_if.reset = gcscaudio_reset_codec;
    317 	sc->host_if.spdif_event = gcscaudio_spdif_event_codec;
    318 
    319 	if ((rc = ac97_attach(&sc->host_if, self, &sc->sc_lock)) != 0) {
    320 		aprint_error_dev(&sc->sc_dev,
    321 		    "can't attach codec (error=%d)\n", rc);
    322 		goto attach_failure_intr;
    323 	}
    324 
    325 	if (!pmf_device_register(self, NULL, gcscaudio_resume))
    326 		aprint_error_dev(self, "couldn't establish power handler\n");
    327 
    328 
    329 	sc->sc_nformats = 0;
    330 	gcscaudio_append_formats(sc, &gcscaudio_formats_2ch);
    331 	if (AC97_IS_4CH(sc->codec_if))
    332 		gcscaudio_append_formats(sc, &gcscaudio_formats_4ch);
    333 	if (AC97_IS_6CH(sc->codec_if))
    334 		gcscaudio_append_formats(sc, &gcscaudio_formats_6ch);
    335 	if (AC97_IS_FIXED_RATE(sc->codec_if)) {
    336 		for (i = 0; i < sc->sc_nformats; i++) {
    337 			sc->sc_formats[i].frequency_type = 1;
    338 			sc->sc_formats[i].frequency[0] = 48000;
    339 		}
    340 	}
    341 
    342 	if ((rc = auconv_create_encodings(sc->sc_formats, sc->sc_nformats,
    343 	    &sc->sc_encodings)) != 0) {
    344 		aprint_error_dev(self,
    345 		    "auconv_create_encoding: error=%d\n", rc);
    346 		goto attach_failure_codec;
    347 	}
    348 
    349 	audio_attach_mi(&gcscaudio_hw_if, sc, &sc->sc_dev);
    350 	sc->codec_if->vtbl->unlock(sc->codec_if);
    351 	return;
    352 
    353 attach_failure_codec:
    354 	sc->codec_if->vtbl->detach(sc->codec_if);
    355 attach_failure_intr:
    356 	pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
    357 attach_failure_unmap:
    358 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
    359 	return;
    360 }
    361 
    362 static int
    363 gcscaudio_attach_codec(void *arg, struct ac97_codec_if *codec_if)
    364 {
    365 	struct gcscaudio_softc *sc;
    366 
    367 	sc = (struct gcscaudio_softc *)arg;
    368 	sc->codec_if = codec_if;
    369 	return 0;
    370 }
    371 
    372 static int
    373 gcscaudio_reset_codec(void *arg)
    374 {
    375 	struct gcscaudio_softc *sc;
    376 	sc = (struct gcscaudio_softc *)arg;
    377 
    378 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    379 	    ACC_CODEC_CNTL_LNK_WRM_RST |
    380 	    ACC_CODEC_CNTL_CMD_NEW);
    381 
    382 	if (gcscaudio_wait_ready_codec(sc, "reset timeout\n"))
    383 		return 1;
    384 
    385 	return 0;
    386 }
    387 
    388 static void
    389 gcscaudio_spdif_event_codec(void *arg, bool flag)
    390 {
    391 	struct gcscaudio_softc *sc;
    392 
    393 	sc = (struct gcscaudio_softc *)arg;
    394 	sc->sc_spdif = flag;
    395 }
    396 
    397 static int
    398 gcscaudio_wait_ready_codec(struct gcscaudio_softc *sc, const char *timeout_msg)
    399 {
    400 	int i;
    401 
    402 #define GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT	500
    403 	for (i = GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT; (i >= 0) &&
    404 	    (bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL) &
    405 	    ACC_CODEC_CNTL_CMD_NEW); i--)
    406 		delay(1);
    407 
    408 	if (i < 0) {
    409 		aprint_error_dev(&sc->sc_dev, "%s", timeout_msg);
    410 		return 1;
    411 	}
    412 
    413 	return 0;
    414 }
    415 
    416 static int
    417 gcscaudio_write_codec(void *arg, uint8_t reg, uint16_t val)
    418 {
    419 	struct gcscaudio_softc *sc;
    420 
    421 	sc = (struct gcscaudio_softc *)arg;
    422 
    423 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    424 	    ACC_CODEC_CNTL_WRITE_CMD |
    425 	    ACC_CODEC_CNTL_CMD_NEW |
    426 	    ACC_CODEC_REG2ADDR(reg) |
    427 	    (val & ACC_CODEC_CNTL_CMD_DATA_MASK));
    428 
    429 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout\n"))
    430 		return 1;
    431 
    432 #ifdef GCSCAUDIO_CODEC_DEBUG
    433 	aprint_error_dev(&sc->sc_dev, "codec write: reg=0x%02x, val=0x%04x\n",
    434 	    reg, val);
    435 #endif
    436 
    437 	return 0;
    438 }
    439 
    440 static int
    441 gcscaudio_read_codec(void *arg, uint8_t reg, uint16_t *val)
    442 {
    443 	struct gcscaudio_softc *sc;
    444 	uint32_t v;
    445 	int i;
    446 
    447 	sc = (struct gcscaudio_softc *)arg;
    448 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    449 	    ACC_CODEC_CNTL_READ_CMD | ACC_CODEC_CNTL_CMD_NEW |
    450 	    ACC_CODEC_REG2ADDR(reg));
    451 
    452 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout for reading"))
    453 		return 1;
    454 
    455 #define GCSCAUDIO_READ_CODEC_TIMEOUT	50
    456 	for (i = GCSCAUDIO_READ_CODEC_TIMEOUT; i >= 0; i--) {
    457 		v = bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_STATUS);
    458 		if ((v & ACC_CODEC_STATUS_STS_NEW) &&
    459 		    (ACC_CODEC_ADDR2REG(v) == reg))
    460 			break;
    461 
    462 		delay(10);
    463 	}
    464 
    465 	if (i < 0) {
    466 		aprint_error_dev(&sc->sc_dev, "codec read timeout\n");
    467 		return 1;
    468 	}
    469 
    470 #ifdef GCSCAUDIO_CODEC_DEBUG
    471 	aprint_error_dev(&sc->sc_dev, "codec read: reg=0x%02x, val=0x%04x\n",
    472 	    reg, v & ACC_CODEC_STATUS_STS_DATA_MASK);
    473 #endif
    474 
    475 	*val = v;
    476 	return 0;
    477 }
    478 
    479 static int
    480 gcscaudio_open(void *arg, int flags)
    481 {
    482 	struct gcscaudio_softc *sc;
    483 
    484 	sc = (struct gcscaudio_softc *)arg;
    485 	sc->codec_if->vtbl->lock(sc->codec_if);
    486 	return 0;
    487 }
    488 
    489 static void
    490 gcscaudio_close(void *arg)
    491 {
    492 	struct gcscaudio_softc *sc;
    493 
    494 	sc = (struct gcscaudio_softc *)arg;
    495 	sc->codec_if->vtbl->unlock(sc->codec_if);
    496 }
    497 
    498 static int
    499 gcscaudio_query_encoding(void *arg, struct audio_encoding *fp)
    500 {
    501 	struct gcscaudio_softc *sc;
    502 
    503 	sc = (struct gcscaudio_softc *)arg;
    504 	return auconv_query_encoding(sc->sc_encodings, fp);
    505 }
    506 
    507 static int
    508 gcscaudio_set_params_ch(struct gcscaudio_softc *sc,
    509                         struct gcscaudio_softc_ch *ch, int mode,
    510                         audio_params_t *p, stream_filter_list_t *fil)
    511 {
    512 	int error, idx;
    513 
    514 	if ((p->sample_rate < 8000) || (p->sample_rate > 48000))
    515 		return EINVAL;
    516 
    517 	if (p->precision != 8 && p->precision != 16)
    518 		return EINVAL;
    519 
    520 	if ((idx = auconv_set_converter(sc->sc_formats, sc->sc_nformats,
    521 	    mode, p, TRUE, fil)) < 0)
    522 		return EINVAL;
    523 
    524 	if (fil->req_size > 0)
    525 		p = &fil->filters[0].param;
    526 
    527 	if (mode == AUMODE_PLAY) {
    528 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    529 			/* setup rate of DAC/ADC */
    530 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    531 			    AC97_REG_PCM_LR_ADC_RATE, &p->sample_rate)) != 0)
    532 				return error;
    533 
    534 			/* additional rate of DAC for Surround */
    535 			if ((p->channels >= 4) &&
    536 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    537 			    AC97_REG_PCM_SURR_DAC_RATE, &p->sample_rate)) != 0)
    538 				return error;
    539 
    540 			/* additional rate of DAC for LowFrequencyEffect */
    541 			if ((p->channels == 6) &&
    542 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    543 			    AC97_REG_PCM_LFE_DAC_RATE, &p->sample_rate)) != 0)
    544 				return error;
    545 		}
    546 	}
    547 
    548 	if (mode == AUMODE_RECORD) {
    549 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    550 			/* setup rate of DAC/ADC */
    551 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    552 			    AC97_REG_PCM_FRONT_DAC_RATE, &p->sample_rate)) != 0)
    553 				return error;
    554 		}
    555 	}
    556 
    557 	ch->ch_params = *p;
    558 	return 0;
    559 }
    560 
    561 static int
    562 gcscaudio_set_params(void *arg, int setmode, int usemode,
    563                      audio_params_t *play, audio_params_t *rec,
    564                      stream_filter_list_t *pfil, stream_filter_list_t *rfil)
    565 {
    566 	struct gcscaudio_softc *sc;
    567 	int error;
    568 
    569 	sc = (struct gcscaudio_softc *)arg;
    570 
    571 	if (setmode & AUMODE_PLAY) {
    572 		if ((error = gcscaudio_set_params_ch(sc, &sc->sc_play,
    573 		    AUMODE_PLAY, play, pfil)) != 0)
    574 			return error;
    575 	}
    576 	if (setmode & AUMODE_RECORD) {
    577 		if ((error = gcscaudio_set_params_ch(sc, &sc->sc_rec,
    578 		    AUMODE_RECORD, rec, rfil)) != 0)
    579 			return error;
    580 	}
    581 
    582 	return 0;
    583 }
    584 
    585 static int
    586 gcscaudio_round_blocksize(void *arg, int blk, int mode,
    587                           const audio_params_t *param)
    588 {
    589 	blk &= -4;
    590 	if (blk > GCSCAUDIO_PRD_SIZE_MAX)
    591 		blk = GCSCAUDIO_PRD_SIZE_MAX;
    592 
    593 	return blk;
    594 }
    595 
    596 static int
    597 gcscaudio_halt_output(void *arg)
    598 {
    599 	struct gcscaudio_softc *sc;
    600 
    601 	sc = (struct gcscaudio_softc *)arg;
    602 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
    603 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    604 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_CMD,
    605 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    606 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
    607 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    608 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
    609 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    610 	sc->sc_play.ch_intr = NULL;
    611 
    612 	/* channel splitter */
    613 	sc->sc_mch_splitter = NULL;
    614 	if (sc->sc_mch_split_buf)
    615 		gcscaudio_free(sc, sc->sc_mch_split_buf, sc->sc_mch_split_size);
    616 	sc->sc_mch_split_buf = NULL;
    617 
    618 	return 0;
    619 }
    620 
    621 static int
    622 gcscaudio_halt_input(void *arg)
    623 {
    624 	struct gcscaudio_softc *sc;
    625 
    626 	sc = (struct gcscaudio_softc *)arg;
    627 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
    628 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    629 	sc->sc_rec.ch_intr = NULL;
    630 	return 0;
    631 }
    632 
    633 static int
    634 gcscaudio_getdev(void *addr, struct audio_device *retp)
    635 {
    636 	*retp = gcscaudio_device;
    637 	return 0;
    638 }
    639 
    640 static int
    641 gcscaudio_set_port(void *addr, mixer_ctrl_t *cp)
    642 {
    643 	struct gcscaudio_softc *sc;
    644 
    645 	sc = addr;
    646 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp);
    647 }
    648 
    649 static int
    650 gcscaudio_get_port(void *addr, mixer_ctrl_t *cp)
    651 {
    652 	struct gcscaudio_softc *sc;
    653 
    654 	sc = addr;
    655 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp);
    656 }
    657 
    658 static int
    659 gcscaudio_query_devinfo(void *addr, mixer_devinfo_t *dip)
    660 {
    661 	struct gcscaudio_softc *sc;
    662 
    663 	sc = addr;
    664 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, dip);
    665 }
    666 
    667 static void *
    668 gcscaudio_malloc(void *arg, int direction, size_t size)
    669 {
    670 	struct gcscaudio_softc *sc;
    671 	struct gcscaudio_dma *p;
    672 	int error;
    673 
    674 	sc = (struct gcscaudio_softc *)arg;
    675 
    676 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
    677 	if (p == NULL)
    678 		return NULL;
    679 	p->size = size;
    680 
    681 	error = gcscaudio_allocate_dma(sc, size, &p->addr,
    682 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]), &p->nseg, &p->map);
    683 	if (error) {
    684 		kmem_free(p, sizeof(*p));
    685 		return NULL;
    686 	}
    687 
    688 	LIST_INSERT_HEAD(&sc->sc_dmalist, p, list);
    689 	return p->addr;
    690 }
    691 
    692 static void
    693 gcscaudio_free(void *arg, void *ptr, size_t size)
    694 {
    695 	struct gcscaudio_softc *sc;
    696 	struct gcscaudio_dma *p;
    697 
    698 	sc = (struct gcscaudio_softc *)arg;
    699 
    700 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    701 		if (p->addr == ptr) {
    702 			bus_dmamap_unload(sc->sc_dmat, p->map);
    703 			bus_dmamap_destroy(sc->sc_dmat, p->map);
    704 			bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    705 			bus_dmamem_free(sc->sc_dmat, p->segs, p->nseg);
    706 
    707 			LIST_REMOVE(p, list);
    708 			kmem_free(p, sizeof(*p));
    709 			break;
    710 		}
    711 	}
    712 }
    713 
    714 static paddr_t
    715 gcscaudio_mappage(void *arg, void *mem, off_t off, int prot)
    716 {
    717 	struct gcscaudio_softc *sc;
    718 	struct gcscaudio_dma *p;
    719 
    720 	if (off < 0)
    721 		return -1;
    722 
    723 	sc = (struct gcscaudio_softc *)arg;
    724 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    725 		if (p->addr == mem) {
    726 			return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nseg,
    727 			    off, prot, BUS_DMA_WAITOK);
    728 		}
    729 	}
    730 
    731 	return -1;
    732 }
    733 
    734 static size_t
    735 gcscaudio_round_buffersize(void *addr, int direction, size_t size)
    736 {
    737 	if (size > GCSCAUDIO_BUFSIZE_MAX)
    738 		size = GCSCAUDIO_BUFSIZE_MAX;
    739 
    740 	return size;
    741 }
    742 
    743 static int
    744 gcscaudio_get_props(void *addr)
    745 {
    746 	struct gcscaudio_softc *sc;
    747 	int props;
    748 
    749 	sc = (struct gcscaudio_softc *)addr;
    750 	props = AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
    751 	/*
    752 	 * Even if the codec is fixed-rate, set_param() succeeds for any sample
    753 	 * rate because of aurateconv.  Applications can't know what rate the
    754 	 * device can process in the case of mmap().
    755 	 */
    756 	if (!AC97_IS_FIXED_RATE(sc->codec_if))
    757 		props |= AUDIO_PROP_MMAP;
    758 	return props;
    759 }
    760 
    761 static int
    762 build_prdtables(struct gcscaudio_softc *sc, int prdidx,
    763                 void *addr, size_t size, int blksize, int blklen, int blkoff)
    764 {
    765 	struct gcscaudio_dma *p;
    766 	struct acc_prd *prdp;
    767 	bus_addr_t paddr;
    768 	int i;
    769 
    770 	/* get physical address of start */
    771 	paddr = (bus_addr_t)0;
    772 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    773 		if (p->addr == addr) {
    774 			paddr = p->map->dm_segs[0].ds_addr;
    775 			break;
    776 		}
    777 	}
    778 	if (!paddr) {
    779 		aprint_error_dev(&sc->sc_dev,
    780 		    "bad addr %p\n", addr);
    781 		return EINVAL;
    782 	}
    783 
    784 #define PRDADDR(prdidx,idx) \
    785 	(sc->sc_prd.p_prdmap->dm_segs[0].ds_addr) + sizeof(struct acc_prd) * \
    786 	(((prdidx) * GCSCAUDIO_NPRDTABLE) + (idx))
    787 
    788 	/*
    789 	 * build PRD table
    790 	 *   prdtbl[] = <PRD0>, <PRD1>, <PRD2>, ..., <PRDn>, <jmp to PRD0>
    791 	 */
    792 	prdp = sc->sc_prd.p_prdtables->prdtbl[prdidx];
    793 	for (i = 0; size > 0; size -= blksize, i++) {
    794 		prdp[i].address = paddr + blksize * i + blkoff;
    795 		prdp[i].ctrlsize =
    796 		    (size < blklen ? size : blklen) | ACC_BMx_PRD_CTRL_EOP;
    797 	}
    798 	prdp[i].address = PRDADDR(prdidx, 0);
    799 	prdp[i].ctrlsize = ACC_BMx_PRD_CTRL_JMP;
    800 
    801 	bus_dmamap_sync(sc->sc_dmat, sc->sc_prd.p_prdmap, 0,
    802 	    sizeof(struct acc_prd) * i, BUS_DMASYNC_PREWRITE);
    803 
    804 	return 0;
    805 }
    806 
    807 static void
    808 split_buffer_4ch(void *dst, void *src, int size, int blksize)
    809 {
    810 	int left, i;
    811 	uint16_t *s, *d;
    812 
    813 	/*
    814 	 * src[blk0]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    815 	 * src[blk1]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    816 	 * src[blk2]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    817 	 *     :
    818 	 *
    819 	 *   rearrange to
    820 	 *
    821 	 * src[blk0]: L,R,L,R,L,R,L,R,..
    822 	 * src[blk1]: L,R,L,R,L,R,L,R,..
    823 	 * src[blk2]: L,R,L,R,L,R,L,R,..
    824 	 *     :
    825 	 * dst[blk0]: SL,SR,SL,SR,SL,SR,SL,SR,..
    826 	 * dst[blk1]: SL,SR,SL,SR,SL,SR,SL,SR,..
    827 	 * dst[blk2]: SL,SR,SL,SR,SL,SR,SL,SR,..
    828 	 *     :
    829 	 */
    830 	for (left = size; left > 0; left -= blksize) {
    831 		s = (uint16_t *)src;
    832 		d = (uint16_t *)dst;
    833 		for (i = 0; i < blksize / sizeof(uint16_t) / 4; i++) {
    834 			/* L,R,SL,SR -> SL,SR */
    835 			s++;
    836 			s++;
    837 			*d++ = *s++;
    838 			*d++ = *s++;
    839 		}
    840 
    841 		s = (uint16_t *)src;
    842 		d = (uint16_t *)src;
    843 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    844 			/* L,R,SL,SR -> L,R */
    845 			*d++ = *s++;
    846 			*d++ = *s++;
    847 			s++;
    848 			s++;
    849 		}
    850 
    851 		src = (char *)src + blksize;
    852 		dst = (char *)dst + blksize;
    853 	}
    854 }
    855 
    856 static void
    857 split_buffer_6ch(void *dst, void *src, int size, int blksize)
    858 {
    859 	int left, i;
    860 	uint16_t *s, *d, *dc, *dl;
    861 
    862 	/*
    863 	 * by default, treat as WAV style 5.1ch order
    864 	 *   5.1ch(WAV): L R C LFE SL SR
    865 	 *   5.1ch(AAC): C L R SL SR LFE
    866 	 *        :
    867 	 */
    868 
    869 	/*
    870 	 * src[blk0]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    871 	 * src[blk1]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    872 	 * src[blk2]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    873 	 *     :
    874 	 * src[N-1] : L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    875 	 *
    876 	 *   rearrange to
    877 	 *
    878 	 * src[blk0]: L,R,L,R,..
    879 	 * src[blk1]: L,R,L,R,..
    880 	 * src[blk2]: L,R,L,R,..
    881 	 *     :
    882 	 *
    883 	 * dst[blk0]: SL,SR,SL,SR,..
    884 	 * dst[blk1]: SL,SR,SL,SR,..
    885 	 * dst[blk2]: SL,SR,SL,SR,..
    886 	 *     :
    887 	 *
    888 	 * dst[N/2+0]: C,C,C,..
    889 	 * dst[N/2+1]: C,C,C,..
    890 	 *     :
    891 	 *
    892 	 * dst[N/2+N/4+0]: LFE,LFE,LFE,..
    893 	 * dst[N/2+N/4+1]: LFE,LFE,LFE,..
    894 	 *     :
    895 	 */
    896 
    897 	for (left = size; left > 0; left -= blksize) {
    898 		s = (uint16_t *)src;
    899 		d = (uint16_t *)dst;
    900 		dc = (uint16_t *)((char *)dst + blksize / 2);
    901 		dl = (uint16_t *)((char *)dst + blksize / 2 + blksize / 4);
    902 		for (i = 0; i < blksize / sizeof(uint16_t) / 6; i++) {
    903 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    904 			/*
    905 			 * AAC: [C,L,R,SL,SR,LFE]
    906 			 *  => [SL,SR]
    907 			 *  => [C]
    908 			 *  => [LFE]
    909 			 */
    910 			*dc++ = s[0];	/* C */
    911 			*dl++ = s[5];	/* LFE */
    912 			*d++ = s[3];	/* SL */
    913 			*d++ = s[4];	/* SR */
    914 #else
    915 			/*
    916 			 * WAV: [L,R,C,LFE,SL,SR]
    917 			 *  => [SL,SR]
    918 			 *  => [C]
    919 			 *  => [LFE]
    920 			 */
    921 			*dc++ = s[2];	/* C */
    922 			*dl++ = s[3];	/* LFE */
    923 			*d++ = s[4];	/* SL */
    924 			*d++ = s[5];	/* SR */
    925 #endif
    926 			s += 6;
    927 		}
    928 
    929 		s = (uint16_t *)src;
    930 		d = (uint16_t *)src;
    931 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    932 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    933 			/* AAC: [C,L,R,SL,SR,LFE] => [L,R] */
    934 			*d++ = s[1];
    935 			*d++ = s[2];
    936 #else
    937 			/* WAV: [L,R,C,LFE,SL,SR] => [L,R] */
    938 			*d++ = s[0];
    939 			*d++ = s[1];
    940 #endif
    941 			s += 6;
    942 		}
    943 
    944 		src = (char *)src + blksize;
    945 		dst = (char *)dst + blksize;
    946 	}
    947 }
    948 
    949 static void
    950 channel_splitter(struct gcscaudio_softc *sc)
    951 {
    952 	int splitsize, left;
    953 	void *src, *dst;
    954 
    955 	if (sc->sc_mch_splitter == NULL)
    956 		return;
    957 
    958 	left = sc->sc_mch_split_size - sc->sc_mch_split_off;
    959 	splitsize = sc->sc_mch_split_blksize;
    960 	if (left < splitsize)
    961 		splitsize = left;
    962 
    963 	src = (char *)sc->sc_mch_split_start + sc->sc_mch_split_off;
    964 	dst = (char *)sc->sc_mch_split_buf + sc->sc_mch_split_off;
    965 
    966 	sc->sc_mch_splitter(dst, src, splitsize, sc->sc_mch_split_blksize);
    967 
    968 	sc->sc_mch_split_off += sc->sc_mch_split_blksize;
    969 	if (sc->sc_mch_split_off >= sc->sc_mch_split_size)
    970 		sc->sc_mch_split_off = 0;
    971 }
    972 
    973 static int
    974 gcscaudio_trigger_output(void *addr, void *start, void *end, int blksize,
    975                          void (*intr)(void *), void *arg,
    976                          const audio_params_t *param)
    977 {
    978 	struct gcscaudio_softc *sc;
    979 	size_t size;
    980 
    981 	sc = (struct gcscaudio_softc *)addr;
    982 	sc->sc_play.ch_intr = intr;
    983 	sc->sc_play.ch_intr_arg = arg;
    984 	size = (char *)end - (char *)start;
    985 
    986 	switch (sc->sc_play.ch_params.channels) {
    987 	case 2:
    988 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
    989 		    blksize, 0))
    990 			return EINVAL;
    991 
    992 		if (!AC97_IS_4CH(sc->codec_if)) {
    993 			/*
    994 			 * output 2ch PCM to FRONT.LR(BM0)
    995 			 *
    996 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
    997 			 *
    998 			 */
    999 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1000 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1001 
   1002 			/* start DMA transfer */
   1003 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1004 			    ACC_BMx_CMD_WRITE |
   1005 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1006 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1007 		} else {
   1008 			/*
   1009 			 * output same PCM to FRONT.LR(BM0) and SURROUND.LR(BM6).
   1010 			 * CENTER(BM4) and LFE(BM7) doesn't sound.
   1011 			 *
   1012 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
   1013 			 *                             BM6: (same of BM0)
   1014 			 *                             BM4: none
   1015 			 *                             BM7: none
   1016 			 */
   1017 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1018 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1019 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1020 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1021 
   1022 			/* start DMA transfer */
   1023 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1024 			    ACC_BMx_CMD_WRITE |
   1025 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1026 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1027 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1028 			    ACC_BMx_CMD_WRITE |
   1029 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1030 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1031 		}
   1032 		break;
   1033 	case 4:
   1034 		/*
   1035 		 * output 4ch PCM split to FRONT.LR(BM0) and SURROUND.LR(BM6).
   1036 		 * CENTER(BM4) and LFE(BM7) doesn't sound.
   1037 		 *
   1038 		 * rearrange ordered channel to continuous per channel
   1039 		 *
   1040 		 *   4ch: L,R,SL,SR,L,R,SL,SR,... => BM0: L,R,L,R,...
   1041 		 *                                   BM6: SL,SR,SL,SR,...
   1042 		 *                                   BM4: none
   1043 		 *                                   BM7: none
   1044 		 */
   1045 		if (sc->sc_mch_split_buf)
   1046 			gcscaudio_free(sc, sc->sc_mch_split_buf,
   1047 			    sc->sc_mch_split_size);
   1048 
   1049 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
   1050 		    size)) == NULL)
   1051 			return ENOMEM;
   1052 
   1053 		/*
   1054 		 * 1st and 2nd blocks are split immediately.
   1055 		 * Other blocks will be split synchronous with intr.
   1056 		 */
   1057 		split_buffer_4ch(sc->sc_mch_split_buf, start, blksize * 2,
   1058 		    blksize);
   1059 
   1060 		sc->sc_mch_split_start = start;
   1061 		sc->sc_mch_split_size = size;
   1062 		sc->sc_mch_split_blksize = blksize;
   1063 		sc->sc_mch_split_off = (blksize * 2) % size;
   1064 		sc->sc_mch_splitter = split_buffer_4ch;	/* split function */
   1065 
   1066 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
   1067 		    blksize / 2, 0))
   1068 			return EINVAL;
   1069 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1070 		    size, blksize, blksize / 2, 0))
   1071 			return EINVAL;
   1072 
   1073 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1074 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1075 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1076 		    PRDADDR(PRD_TABLE_SURR, 0));
   1077 
   1078 		/* start DMA transfer */
   1079 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1080 		    ACC_BMx_CMD_WRITE |
   1081 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1082 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1083 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1084 		    ACC_BMx_CMD_WRITE |
   1085 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1086 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1087 		break;
   1088 	case 6:
   1089 		/*
   1090 		 * output 6ch PCM split to
   1091 		 * FRONT.LR(BM0), SURROUND.LR(BM6), CENTER(BM4) and LFE(BM7)
   1092 		 *
   1093 		 * rearrange ordered channel to continuous per channel
   1094 		 *
   1095 		 *   5.1ch: L,R,C,LFE,SL,SR,... => BM0: L,R,...
   1096 		 *                                 BM4: C,...
   1097 		 *                                 BM6: SL,SR,...
   1098 		 *                                 BM7: LFE,...
   1099 		 *
   1100 		 */
   1101 		if (sc->sc_mch_split_buf)
   1102 			gcscaudio_free(sc, sc->sc_mch_split_buf,
   1103 			    sc->sc_mch_split_size);
   1104 
   1105 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
   1106 		    size)) == NULL)
   1107 			return ENOMEM;
   1108 
   1109 		/*
   1110 		 * 1st and 2nd blocks are split immediately.
   1111 		 * Other block will be split synchronous with intr.
   1112 		 */
   1113 		split_buffer_6ch(sc->sc_mch_split_buf, start, blksize * 2,
   1114 		    blksize);
   1115 
   1116 		sc->sc_mch_split_start = start;
   1117 		sc->sc_mch_split_size = size;
   1118 		sc->sc_mch_split_blksize = blksize;
   1119 		sc->sc_mch_split_off = (blksize * 2) % size;
   1120 		sc->sc_mch_splitter = split_buffer_6ch;	/* split function */
   1121 
   1122 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
   1123 		    blksize / 3, 0))
   1124 			return EINVAL;
   1125 		if (build_prdtables(sc, PRD_TABLE_CENTER, sc->sc_mch_split_buf,
   1126 		    size, blksize, blksize / 3, blksize / 2))
   1127 			return EINVAL;
   1128 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1129 		    size, blksize, blksize / 3, 0))
   1130 			return EINVAL;
   1131 		if (build_prdtables(sc, PRD_TABLE_LFE, sc->sc_mch_split_buf,
   1132 		    size, blksize, blksize / 3, blksize / 2 + blksize / 4))
   1133 			return EINVAL;
   1134 
   1135 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1136 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1137 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_PRD,
   1138 		    PRDADDR(PRD_TABLE_CENTER, 0));
   1139 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1140 		    PRDADDR(PRD_TABLE_SURR, 0));
   1141 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_PRD,
   1142 		    PRDADDR(PRD_TABLE_LFE, 0));
   1143 
   1144 		/* start DMA transfer */
   1145 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1146 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1147 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1148 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM4_CMD,
   1149 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1150 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1151 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1152 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1153 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1154 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
   1155 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1156 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1157 		break;
   1158 	}
   1159 
   1160 	return 0;
   1161 }
   1162 
   1163 static int
   1164 gcscaudio_trigger_input(void *addr, void *start, void *end, int blksize,
   1165                         void (*intr)(void *), void *arg,
   1166                         const audio_params_t *param)
   1167 {
   1168 	struct gcscaudio_softc *sc;
   1169 	size_t size;
   1170 
   1171 	sc = (struct gcscaudio_softc *)addr;
   1172 	sc->sc_rec.ch_intr = intr;
   1173 	sc->sc_rec.ch_intr_arg = arg;
   1174 	size = (char *)end - (char *)start;
   1175 
   1176 	if (build_prdtables(sc, PRD_TABLE_REC, start, size, blksize, blksize, 0))
   1177 		return EINVAL;
   1178 
   1179 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_PRD,
   1180 	    PRDADDR(PRD_TABLE_REC, 0));
   1181 
   1182 	/* start transfer */
   1183 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
   1184 	    ACC_BMx_CMD_READ |
   1185 	    ACC_BMx_CMD_BYTE_ORD_EL |
   1186 	    ACC_BMx_CMD_BM_CTL_ENABLE);
   1187 
   1188 	return 0;
   1189 }
   1190 
   1191 static void
   1192 gcscaudio_get_locks(void *arg, kmutex_t **intr, kmutex_t **thread)
   1193 {
   1194 	struct gcscaudio_softc *sc;
   1195 
   1196 	sc = (struct gcscaudio_softc *)arg;
   1197 
   1198 	*intr = &sc->sc_intr_lock;
   1199 	*thread = &sc->sc_lock;
   1200 }
   1201 
   1202 static int
   1203 gcscaudio_intr(void *arg)
   1204 {
   1205 	struct gcscaudio_softc *sc;
   1206 	uint16_t intr;
   1207 	uint8_t bmstat;
   1208 	int nintr;
   1209 
   1210 	nintr = 0;
   1211 	sc = (struct gcscaudio_softc *)arg;
   1212 
   1213 	mutex_spin_enter(&sc->sc_intr_lock);
   1214 
   1215 	intr = bus_space_read_2(sc->sc_iot, sc->sc_ioh, ACC_IRQ_STATUS);
   1216 	if (intr == 0)
   1217 		goto done;
   1218 
   1219 	/* Front output */
   1220 	if (intr & ACC_IRQ_STATUS_BM0_IRQ_STS) {
   1221 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_STATUS);
   1222 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1223 			aprint_normal_dev(&sc->sc_dev, "BM0: Bus Master Error\n");
   1224 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1225 			aprint_normal_dev(&sc->sc_dev, "BM0: NO End of Page?\n");
   1226 
   1227 		if (sc->sc_play.ch_intr) {
   1228 			sc->sc_play.ch_intr(sc->sc_play.ch_intr_arg);
   1229 			channel_splitter(sc);
   1230 		}
   1231 		nintr++;
   1232 	}
   1233 
   1234 	/* Center output */
   1235 	if (intr & ACC_IRQ_STATUS_BM4_IRQ_STS) {
   1236 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM4_STATUS);
   1237 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1238 			aprint_normal_dev(&sc->sc_dev, "BM4: Bus Master Error\n");
   1239 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1240 			aprint_normal_dev(&sc->sc_dev, "BM4: NO End of Page?\n");
   1241 
   1242 		nintr++;
   1243 	}
   1244 
   1245 	/* Surround output */
   1246 	if (intr & ACC_IRQ_STATUS_BM6_IRQ_STS) {
   1247 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_STATUS);
   1248 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1249 			aprint_normal_dev(&sc->sc_dev, "BM6: Bus Master Error\n");
   1250 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1251 			aprint_normal_dev(&sc->sc_dev, "BM6: NO End of Page?\n");
   1252 
   1253 		nintr++;
   1254 	}
   1255 
   1256 	/* LowFrequencyEffect output */
   1257 	if (intr & ACC_IRQ_STATUS_BM7_IRQ_STS) {
   1258 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_STATUS);
   1259 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1260 			aprint_normal_dev(&sc->sc_dev, "BM7: Bus Master Error\n");
   1261 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1262 			aprint_normal_dev(&sc->sc_dev, "BM7: NO End of Page?\n");
   1263 
   1264 		nintr++;
   1265 	}
   1266 
   1267 	/* record */
   1268 	if (intr & ACC_IRQ_STATUS_BM1_IRQ_STS) {
   1269 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_STATUS);
   1270 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1271 			aprint_normal_dev(&sc->sc_dev, "BM1: Bus Master Error\n");
   1272 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1273 			aprint_normal_dev(&sc->sc_dev, "BM1: NO End of Page?\n");
   1274 
   1275 		if (sc->sc_rec.ch_intr) {
   1276 			sc->sc_rec.ch_intr(sc->sc_rec.ch_intr_arg);
   1277 		}
   1278 		nintr++;
   1279 	}
   1280 
   1281 #ifdef GCSCAUDIO_DEBUG
   1282 	if (intr & ACC_IRQ_STATUS_IRQ_STS)
   1283 		aprint_normal_dev(&sc->sc_dev, "Codec GPIO IRQ Status\n");
   1284 	if (intr & ACC_IRQ_STATUS_WU_IRQ_STS)
   1285 		aprint_normal_dev(&sc->sc_dev, "Codec GPIO Wakeup IRQ Status\n");
   1286 	if (intr & ACC_IRQ_STATUS_BM2_IRQ_STS)
   1287 		aprint_normal_dev(&sc->sc_dev, "Audio Bus Master 2 IRQ Status\n");
   1288 	if (intr & ACC_IRQ_STATUS_BM3_IRQ_STS)
   1289 		aprint_normal_dev(&sc->sc_dev, "Audio Bus Master 3 IRQ Status\n");
   1290 	if (intr & ACC_IRQ_STATUS_BM5_IRQ_STS)
   1291 		aprint_normal_dev(&sc->sc_dev, "Audio Bus Master 5 IRQ Status\n");
   1292 #endif
   1293 
   1294 done:
   1295 	mutex_spin_exit(&sc->sc_intr_lock);
   1296 
   1297 	return nintr ? 1 : 0;
   1298 }
   1299 
   1300 static bool
   1301 gcscaudio_resume(device_t dv, const pmf_qual_t *qual)
   1302 {
   1303 	struct gcscaudio_softc *sc = device_private(dv);
   1304 
   1305 	gcscaudio_reset_codec(sc);
   1306 	DELAY(1000);
   1307 	(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
   1308 
   1309 	return true;
   1310 }
   1311 
   1312 static int
   1313 gcscaudio_allocate_dma(struct gcscaudio_softc *sc, size_t size, void **addrp,
   1314                        bus_dma_segment_t *seglist, int nseg, int *rsegp,
   1315                        bus_dmamap_t *mapp)
   1316 {
   1317 	int error;
   1318 
   1319 	if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, seglist,
   1320 	    nseg, rsegp, BUS_DMA_WAITOK)) != 0) {
   1321 		aprint_error_dev(&sc->sc_dev,
   1322 		    "unable to allocate DMA buffer, error=%d\n", error);
   1323 		goto fail_alloc;
   1324 	}
   1325 
   1326 	if ((error = bus_dmamem_map(sc->sc_dmat, seglist, nseg, size, addrp,
   1327 	    BUS_DMA_WAITOK | BUS_DMA_COHERENT)) != 0) {
   1328 		aprint_error_dev(&sc->sc_dev,
   1329 		    "unable to map DMA buffer, error=%d\n",
   1330 		    error);
   1331 		goto fail_map;
   1332 	}
   1333 
   1334 	if ((error = bus_dmamap_create(sc->sc_dmat, size, nseg, size, 0,
   1335 	    BUS_DMA_WAITOK, mapp)) != 0) {
   1336 		aprint_error_dev(&sc->sc_dev,
   1337 		    "unable to create DMA map, error=%d\n", error);
   1338 		goto fail_create;
   1339 	}
   1340 
   1341 	if ((error = bus_dmamap_load(sc->sc_dmat, *mapp, *addrp, size, NULL,
   1342 	    BUS_DMA_WAITOK)) != 0) {
   1343 		aprint_error_dev(&sc->sc_dev,
   1344 		    "unable to load DMA map, error=%d\n", error);
   1345 		goto fail_load;
   1346 	}
   1347 
   1348 	return 0;
   1349 
   1350 fail_load:
   1351 	bus_dmamap_destroy(sc->sc_dmat, *mapp);
   1352 fail_create:
   1353 	bus_dmamem_unmap(sc->sc_dmat, *addrp, size);
   1354 fail_map:
   1355 	bus_dmamem_free(sc->sc_dmat, seglist, nseg);
   1356 fail_alloc:
   1357 	return error;
   1358 }
   1359