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gcscaudio.c revision 1.14
      1 /*	$NetBSD: gcscaudio.c,v 1.14 2014/03/29 19:28:24 christos 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 1.14 2014/03/29 19:28:24 christos 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 	device_t 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_NEW(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 	char intrbuf[PCI_INTRSTR_LEN];
    267 
    268 	sc = device_private(self);
    269 
    270 	sc->sc_dev = self;
    271 
    272 	aprint_naive(": Audio controller\n");
    273 
    274 	pa = aux;
    275 	sc->sc_pc = pa->pa_pc;
    276 	sc->sc_pt = pa->pa_tag;
    277 	sc->sc_dmat = pa->pa_dmat;
    278 	LIST_INIT(&sc->sc_dmalist);
    279 	sc->sc_mch_split_buf = NULL;
    280 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    281 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    282 
    283 	aprint_normal(": AMD Geode CS5536 Audio\n");
    284 
    285 	if (pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
    286 	    &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios)) {
    287 		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
    288 		return;
    289 	}
    290 
    291 	if (pci_intr_map(pa, &ih)) {
    292 		aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
    293 		goto attach_failure_unmap;
    294 	}
    295 	intrstr = pci_intr_string(sc->sc_pc, ih, intrbuf, sizeof(intrbuf));
    296 
    297 	sc->sc_ih = pci_intr_establish(sc->sc_pc, ih, IPL_AUDIO,
    298 	    gcscaudio_intr, sc);
    299 	if (sc->sc_ih == NULL) {
    300 		aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
    301 		if (intrstr != NULL)
    302 			aprint_error(" at %s", intrstr);
    303 		aprint_error("\n");
    304 		goto attach_failure_unmap;
    305 	}
    306 
    307 	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
    308 
    309 
    310 	if (gcscaudio_allocate_dma(sc, sizeof(*sc->sc_prd.p_prdtables),
    311 	    (void **)&(sc->sc_prd.p_prdtables), sc->sc_prd.p_prdsegs, 1,
    312 	    &(sc->sc_prd.p_prdnseg), &(sc->sc_prd.p_prdmap)) != 0)
    313 		goto attach_failure_intr;
    314 
    315 	sc->host_if.arg = sc;
    316 	sc->host_if.attach = gcscaudio_attach_codec;
    317 	sc->host_if.read = gcscaudio_read_codec;
    318 	sc->host_if.write = gcscaudio_write_codec;
    319 	sc->host_if.reset = gcscaudio_reset_codec;
    320 	sc->host_if.spdif_event = gcscaudio_spdif_event_codec;
    321 
    322 	if ((rc = ac97_attach(&sc->host_if, self, &sc->sc_lock)) != 0) {
    323 		aprint_error_dev(sc->sc_dev,
    324 		    "can't attach codec (error=%d)\n", rc);
    325 		goto attach_failure_intr;
    326 	}
    327 
    328 	if (!pmf_device_register(self, NULL, gcscaudio_resume))
    329 		aprint_error_dev(self, "couldn't establish power handler\n");
    330 
    331 
    332 	sc->sc_nformats = 0;
    333 	gcscaudio_append_formats(sc, &gcscaudio_formats_2ch);
    334 
    335 	mutex_enter(&sc->sc_lock);
    336 	if (AC97_IS_4CH(sc->codec_if))
    337 		gcscaudio_append_formats(sc, &gcscaudio_formats_4ch);
    338 	if (AC97_IS_6CH(sc->codec_if))
    339 		gcscaudio_append_formats(sc, &gcscaudio_formats_6ch);
    340 	if (AC97_IS_FIXED_RATE(sc->codec_if)) {
    341 		for (i = 0; i < sc->sc_nformats; i++) {
    342 			sc->sc_formats[i].frequency_type = 1;
    343 			sc->sc_formats[i].frequency[0] = 48000;
    344 		}
    345 	}
    346 	mutex_exit(&sc->sc_lock);
    347 
    348 	if ((rc = auconv_create_encodings(sc->sc_formats, sc->sc_nformats,
    349 	    &sc->sc_encodings)) != 0) {
    350 		aprint_error_dev(self,
    351 		    "auconv_create_encoding: error=%d\n", rc);
    352 		goto attach_failure_codec;
    353 	}
    354 
    355 	audio_attach_mi(&gcscaudio_hw_if, sc, sc->sc_dev);
    356 	return;
    357 
    358 attach_failure_codec:
    359 	sc->codec_if->vtbl->detach(sc->codec_if);
    360 attach_failure_intr:
    361 	pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
    362 attach_failure_unmap:
    363 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
    364 	return;
    365 }
    366 
    367 static int
    368 gcscaudio_attach_codec(void *arg, struct ac97_codec_if *codec_if)
    369 {
    370 	struct gcscaudio_softc *sc;
    371 
    372 	sc = (struct gcscaudio_softc *)arg;
    373 	sc->codec_if = codec_if;
    374 	return 0;
    375 }
    376 
    377 static int
    378 gcscaudio_reset_codec(void *arg)
    379 {
    380 	struct gcscaudio_softc *sc;
    381 	sc = (struct gcscaudio_softc *)arg;
    382 
    383 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    384 	    ACC_CODEC_CNTL_LNK_WRM_RST |
    385 	    ACC_CODEC_CNTL_CMD_NEW);
    386 
    387 	if (gcscaudio_wait_ready_codec(sc, "reset timeout\n"))
    388 		return 1;
    389 
    390 	return 0;
    391 }
    392 
    393 static void
    394 gcscaudio_spdif_event_codec(void *arg, bool flag)
    395 {
    396 	struct gcscaudio_softc *sc;
    397 
    398 	sc = (struct gcscaudio_softc *)arg;
    399 	sc->sc_spdif = flag;
    400 }
    401 
    402 static int
    403 gcscaudio_wait_ready_codec(struct gcscaudio_softc *sc, const char *timeout_msg)
    404 {
    405 	int i;
    406 
    407 #define GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT	500
    408 	for (i = GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT; (i >= 0) &&
    409 	    (bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL) &
    410 	    ACC_CODEC_CNTL_CMD_NEW); i--)
    411 		delay(1);
    412 
    413 	if (i < 0) {
    414 		aprint_error_dev(sc->sc_dev, "%s", timeout_msg);
    415 		return 1;
    416 	}
    417 
    418 	return 0;
    419 }
    420 
    421 static int
    422 gcscaudio_write_codec(void *arg, uint8_t reg, uint16_t val)
    423 {
    424 	struct gcscaudio_softc *sc;
    425 
    426 	sc = (struct gcscaudio_softc *)arg;
    427 
    428 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    429 	    ACC_CODEC_CNTL_WRITE_CMD |
    430 	    ACC_CODEC_CNTL_CMD_NEW |
    431 	    ACC_CODEC_REG2ADDR(reg) |
    432 	    (val & ACC_CODEC_CNTL_CMD_DATA_MASK));
    433 
    434 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout\n"))
    435 		return 1;
    436 
    437 #ifdef GCSCAUDIO_CODEC_DEBUG
    438 	aprint_error_dev(sc->sc_dev, "codec write: reg=0x%02x, val=0x%04x\n",
    439 	    reg, val);
    440 #endif
    441 
    442 	return 0;
    443 }
    444 
    445 static int
    446 gcscaudio_read_codec(void *arg, uint8_t reg, uint16_t *val)
    447 {
    448 	struct gcscaudio_softc *sc;
    449 	uint32_t v;
    450 	int i;
    451 
    452 	sc = (struct gcscaudio_softc *)arg;
    453 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    454 	    ACC_CODEC_CNTL_READ_CMD | ACC_CODEC_CNTL_CMD_NEW |
    455 	    ACC_CODEC_REG2ADDR(reg));
    456 
    457 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout for reading"))
    458 		return 1;
    459 
    460 #define GCSCAUDIO_READ_CODEC_TIMEOUT	50
    461 	for (i = GCSCAUDIO_READ_CODEC_TIMEOUT; i >= 0; i--) {
    462 		v = bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_STATUS);
    463 		if ((v & ACC_CODEC_STATUS_STS_NEW) &&
    464 		    (ACC_CODEC_ADDR2REG(v) == reg))
    465 			break;
    466 
    467 		delay(10);
    468 	}
    469 
    470 	if (i < 0) {
    471 		aprint_error_dev(sc->sc_dev, "codec read timeout\n");
    472 		return 1;
    473 	}
    474 
    475 #ifdef GCSCAUDIO_CODEC_DEBUG
    476 	aprint_error_dev(sc->sc_dev, "codec read: reg=0x%02x, val=0x%04x\n",
    477 	    reg, v & ACC_CODEC_STATUS_STS_DATA_MASK);
    478 #endif
    479 
    480 	*val = v;
    481 	return 0;
    482 }
    483 
    484 static int
    485 gcscaudio_open(void *arg, int flags)
    486 {
    487 	struct gcscaudio_softc *sc;
    488 
    489 	sc = (struct gcscaudio_softc *)arg;
    490 	sc->codec_if->vtbl->lock(sc->codec_if);
    491 	return 0;
    492 }
    493 
    494 static void
    495 gcscaudio_close(void *arg)
    496 {
    497 	struct gcscaudio_softc *sc;
    498 
    499 	sc = (struct gcscaudio_softc *)arg;
    500 	sc->codec_if->vtbl->unlock(sc->codec_if);
    501 }
    502 
    503 static int
    504 gcscaudio_query_encoding(void *arg, struct audio_encoding *fp)
    505 {
    506 	struct gcscaudio_softc *sc;
    507 
    508 	sc = (struct gcscaudio_softc *)arg;
    509 	return auconv_query_encoding(sc->sc_encodings, fp);
    510 }
    511 
    512 static int
    513 gcscaudio_set_params_ch(struct gcscaudio_softc *sc,
    514                         struct gcscaudio_softc_ch *ch, int mode,
    515                         audio_params_t *p, stream_filter_list_t *fil)
    516 {
    517 	int error, idx;
    518 
    519 	if ((p->sample_rate < 8000) || (p->sample_rate > 48000))
    520 		return EINVAL;
    521 
    522 	if (p->precision != 8 && p->precision != 16)
    523 		return EINVAL;
    524 
    525 	if ((idx = auconv_set_converter(sc->sc_formats, sc->sc_nformats,
    526 	    mode, p, TRUE, fil)) < 0)
    527 		return EINVAL;
    528 
    529 	if (fil->req_size > 0)
    530 		p = &fil->filters[0].param;
    531 
    532 	if (mode == AUMODE_PLAY) {
    533 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    534 			/* setup rate of DAC */
    535 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    536 			    AC97_REG_PCM_FRONT_DAC_RATE, &p->sample_rate)) != 0)
    537 				return error;
    538 
    539 			/* additional rate of DAC for Surround */
    540 			if ((p->channels >= 4) &&
    541 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    542 			    AC97_REG_PCM_SURR_DAC_RATE, &p->sample_rate)) != 0)
    543 				return error;
    544 
    545 			/* additional rate of DAC for LowFrequencyEffect */
    546 			if ((p->channels == 6) &&
    547 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    548 			    AC97_REG_PCM_LFE_DAC_RATE, &p->sample_rate)) != 0)
    549 				return error;
    550 		}
    551 	}
    552 
    553 	if (mode == AUMODE_RECORD) {
    554 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    555 			/* setup rate of ADC */
    556 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    557 			    AC97_REG_PCM_LR_ADC_RATE, &p->sample_rate)) != 0)
    558 				return error;
    559 		}
    560 	}
    561 
    562 	ch->ch_params = *p;
    563 	return 0;
    564 }
    565 
    566 static int
    567 gcscaudio_set_params(void *arg, int setmode, int usemode,
    568                      audio_params_t *play, audio_params_t *rec,
    569                      stream_filter_list_t *pfil, stream_filter_list_t *rfil)
    570 {
    571 	struct gcscaudio_softc *sc;
    572 	int error;
    573 
    574 	sc = (struct gcscaudio_softc *)arg;
    575 
    576 	if (setmode & AUMODE_PLAY) {
    577 		if ((error = gcscaudio_set_params_ch(sc, &sc->sc_play,
    578 		    AUMODE_PLAY, play, pfil)) != 0)
    579 			return error;
    580 	}
    581 	if (setmode & AUMODE_RECORD) {
    582 		if ((error = gcscaudio_set_params_ch(sc, &sc->sc_rec,
    583 		    AUMODE_RECORD, rec, rfil)) != 0)
    584 			return error;
    585 	}
    586 
    587 	return 0;
    588 }
    589 
    590 static int
    591 gcscaudio_round_blocksize(void *arg, int blk, int mode,
    592                           const audio_params_t *param)
    593 {
    594 	blk &= -4;
    595 	if (blk > GCSCAUDIO_PRD_SIZE_MAX)
    596 		blk = GCSCAUDIO_PRD_SIZE_MAX;
    597 
    598 	return blk;
    599 }
    600 
    601 static int
    602 gcscaudio_halt_output(void *arg)
    603 {
    604 	struct gcscaudio_softc *sc;
    605 
    606 	sc = (struct gcscaudio_softc *)arg;
    607 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
    608 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    609 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_CMD,
    610 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    611 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
    612 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    613 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
    614 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    615 	sc->sc_play.ch_intr = NULL;
    616 
    617 	/* channel splitter */
    618 	sc->sc_mch_splitter = NULL;
    619 	if (sc->sc_mch_split_buf)
    620 		gcscaudio_free(sc, sc->sc_mch_split_buf, sc->sc_mch_split_size);
    621 	sc->sc_mch_split_buf = NULL;
    622 
    623 	return 0;
    624 }
    625 
    626 static int
    627 gcscaudio_halt_input(void *arg)
    628 {
    629 	struct gcscaudio_softc *sc;
    630 
    631 	sc = (struct gcscaudio_softc *)arg;
    632 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
    633 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    634 	sc->sc_rec.ch_intr = NULL;
    635 	return 0;
    636 }
    637 
    638 static int
    639 gcscaudio_getdev(void *addr, struct audio_device *retp)
    640 {
    641 	*retp = gcscaudio_device;
    642 	return 0;
    643 }
    644 
    645 static int
    646 gcscaudio_set_port(void *addr, mixer_ctrl_t *cp)
    647 {
    648 	struct gcscaudio_softc *sc;
    649 
    650 	sc = addr;
    651 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp);
    652 }
    653 
    654 static int
    655 gcscaudio_get_port(void *addr, mixer_ctrl_t *cp)
    656 {
    657 	struct gcscaudio_softc *sc;
    658 
    659 	sc = addr;
    660 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp);
    661 }
    662 
    663 static int
    664 gcscaudio_query_devinfo(void *addr, mixer_devinfo_t *dip)
    665 {
    666 	struct gcscaudio_softc *sc;
    667 
    668 	sc = addr;
    669 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, dip);
    670 }
    671 
    672 static void *
    673 gcscaudio_malloc(void *arg, int direction, size_t size)
    674 {
    675 	struct gcscaudio_softc *sc;
    676 	struct gcscaudio_dma *p;
    677 	int error;
    678 
    679 	sc = (struct gcscaudio_softc *)arg;
    680 
    681 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
    682 	if (p == NULL)
    683 		return NULL;
    684 	p->size = size;
    685 
    686 	error = gcscaudio_allocate_dma(sc, size, &p->addr,
    687 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]), &p->nseg, &p->map);
    688 	if (error) {
    689 		kmem_free(p, sizeof(*p));
    690 		return NULL;
    691 	}
    692 
    693 	LIST_INSERT_HEAD(&sc->sc_dmalist, p, list);
    694 	return p->addr;
    695 }
    696 
    697 static void
    698 gcscaudio_free(void *arg, void *ptr, size_t size)
    699 {
    700 	struct gcscaudio_softc *sc;
    701 	struct gcscaudio_dma *p;
    702 
    703 	sc = (struct gcscaudio_softc *)arg;
    704 
    705 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    706 		if (p->addr == ptr) {
    707 			bus_dmamap_unload(sc->sc_dmat, p->map);
    708 			bus_dmamap_destroy(sc->sc_dmat, p->map);
    709 			bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    710 			bus_dmamem_free(sc->sc_dmat, p->segs, p->nseg);
    711 
    712 			LIST_REMOVE(p, list);
    713 			kmem_free(p, sizeof(*p));
    714 			break;
    715 		}
    716 	}
    717 }
    718 
    719 static paddr_t
    720 gcscaudio_mappage(void *arg, void *mem, off_t off, int prot)
    721 {
    722 	struct gcscaudio_softc *sc;
    723 	struct gcscaudio_dma *p;
    724 
    725 	if (off < 0)
    726 		return -1;
    727 
    728 	sc = (struct gcscaudio_softc *)arg;
    729 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    730 		if (p->addr == mem) {
    731 			return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nseg,
    732 			    off, prot, BUS_DMA_WAITOK);
    733 		}
    734 	}
    735 
    736 	return -1;
    737 }
    738 
    739 static size_t
    740 gcscaudio_round_buffersize(void *addr, int direction, size_t size)
    741 {
    742 	if (size > GCSCAUDIO_BUFSIZE_MAX)
    743 		size = GCSCAUDIO_BUFSIZE_MAX;
    744 
    745 	return size;
    746 }
    747 
    748 static int
    749 gcscaudio_get_props(void *addr)
    750 {
    751 	struct gcscaudio_softc *sc;
    752 	int props;
    753 
    754 	sc = (struct gcscaudio_softc *)addr;
    755 	props = AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
    756 	/*
    757 	 * Even if the codec is fixed-rate, set_param() succeeds for any sample
    758 	 * rate because of aurateconv.  Applications can't know what rate the
    759 	 * device can process in the case of mmap().
    760 	 */
    761 	if (!AC97_IS_FIXED_RATE(sc->codec_if))
    762 		props |= AUDIO_PROP_MMAP;
    763 	return props;
    764 }
    765 
    766 static int
    767 build_prdtables(struct gcscaudio_softc *sc, int prdidx,
    768                 void *addr, size_t size, int blksize, int blklen, int blkoff)
    769 {
    770 	struct gcscaudio_dma *p;
    771 	struct acc_prd *prdp;
    772 	bus_addr_t paddr;
    773 	int i;
    774 
    775 	/* get physical address of start */
    776 	paddr = (bus_addr_t)0;
    777 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    778 		if (p->addr == addr) {
    779 			paddr = p->map->dm_segs[0].ds_addr;
    780 			break;
    781 		}
    782 	}
    783 	if (!paddr) {
    784 		aprint_error_dev(sc->sc_dev, "bad addr %p\n", addr);
    785 		return EINVAL;
    786 	}
    787 
    788 #define PRDADDR(prdidx,idx) \
    789 	(sc->sc_prd.p_prdmap->dm_segs[0].ds_addr) + sizeof(struct acc_prd) * \
    790 	(((prdidx) * GCSCAUDIO_NPRDTABLE) + (idx))
    791 
    792 	/*
    793 	 * build PRD table
    794 	 *   prdtbl[] = <PRD0>, <PRD1>, <PRD2>, ..., <PRDn>, <jmp to PRD0>
    795 	 */
    796 	prdp = sc->sc_prd.p_prdtables->prdtbl[prdidx];
    797 	for (i = 0; size > 0; size -= blksize, i++) {
    798 		prdp[i].address = paddr + blksize * i + blkoff;
    799 		prdp[i].ctrlsize =
    800 		    (size < blklen ? size : blklen) | ACC_BMx_PRD_CTRL_EOP;
    801 	}
    802 	prdp[i].address = PRDADDR(prdidx, 0);
    803 	prdp[i].ctrlsize = ACC_BMx_PRD_CTRL_JMP;
    804 
    805 	bus_dmamap_sync(sc->sc_dmat, sc->sc_prd.p_prdmap, 0,
    806 	    sizeof(struct acc_prd) * i, BUS_DMASYNC_PREWRITE);
    807 
    808 	return 0;
    809 }
    810 
    811 static void
    812 split_buffer_4ch(void *dst, void *src, int size, int blksize)
    813 {
    814 	int left, i;
    815 	uint16_t *s, *d;
    816 
    817 	/*
    818 	 * src[blk0]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    819 	 * src[blk1]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    820 	 * src[blk2]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    821 	 *     :
    822 	 *
    823 	 *   rearrange to
    824 	 *
    825 	 * src[blk0]: L,R,L,R,L,R,L,R,..
    826 	 * src[blk1]: L,R,L,R,L,R,L,R,..
    827 	 * src[blk2]: L,R,L,R,L,R,L,R,..
    828 	 *     :
    829 	 * dst[blk0]: SL,SR,SL,SR,SL,SR,SL,SR,..
    830 	 * dst[blk1]: SL,SR,SL,SR,SL,SR,SL,SR,..
    831 	 * dst[blk2]: SL,SR,SL,SR,SL,SR,SL,SR,..
    832 	 *     :
    833 	 */
    834 	for (left = size; left > 0; left -= blksize) {
    835 		s = (uint16_t *)src;
    836 		d = (uint16_t *)dst;
    837 		for (i = 0; i < blksize / sizeof(uint16_t) / 4; i++) {
    838 			/* L,R,SL,SR -> SL,SR */
    839 			s++;
    840 			s++;
    841 			*d++ = *s++;
    842 			*d++ = *s++;
    843 		}
    844 
    845 		s = (uint16_t *)src;
    846 		d = (uint16_t *)src;
    847 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    848 			/* L,R,SL,SR -> L,R */
    849 			*d++ = *s++;
    850 			*d++ = *s++;
    851 			s++;
    852 			s++;
    853 		}
    854 
    855 		src = (char *)src + blksize;
    856 		dst = (char *)dst + blksize;
    857 	}
    858 }
    859 
    860 static void
    861 split_buffer_6ch(void *dst, void *src, int size, int blksize)
    862 {
    863 	int left, i;
    864 	uint16_t *s, *d, *dc, *dl;
    865 
    866 	/*
    867 	 * by default, treat as WAV style 5.1ch order
    868 	 *   5.1ch(WAV): L R C LFE SL SR
    869 	 *   5.1ch(AAC): C L R SL SR LFE
    870 	 *        :
    871 	 */
    872 
    873 	/*
    874 	 * src[blk0]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    875 	 * src[blk1]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    876 	 * src[blk2]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    877 	 *     :
    878 	 * src[N-1] : L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    879 	 *
    880 	 *   rearrange to
    881 	 *
    882 	 * src[blk0]: L,R,L,R,..
    883 	 * src[blk1]: L,R,L,R,..
    884 	 * src[blk2]: L,R,L,R,..
    885 	 *     :
    886 	 *
    887 	 * dst[blk0]: SL,SR,SL,SR,..
    888 	 * dst[blk1]: SL,SR,SL,SR,..
    889 	 * dst[blk2]: SL,SR,SL,SR,..
    890 	 *     :
    891 	 *
    892 	 * dst[N/2+0]: C,C,C,..
    893 	 * dst[N/2+1]: C,C,C,..
    894 	 *     :
    895 	 *
    896 	 * dst[N/2+N/4+0]: LFE,LFE,LFE,..
    897 	 * dst[N/2+N/4+1]: LFE,LFE,LFE,..
    898 	 *     :
    899 	 */
    900 
    901 	for (left = size; left > 0; left -= blksize) {
    902 		s = (uint16_t *)src;
    903 		d = (uint16_t *)dst;
    904 		dc = (uint16_t *)((char *)dst + blksize / 2);
    905 		dl = (uint16_t *)((char *)dst + blksize / 2 + blksize / 4);
    906 		for (i = 0; i < blksize / sizeof(uint16_t) / 6; i++) {
    907 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    908 			/*
    909 			 * AAC: [C,L,R,SL,SR,LFE]
    910 			 *  => [SL,SR]
    911 			 *  => [C]
    912 			 *  => [LFE]
    913 			 */
    914 			*dc++ = s[0];	/* C */
    915 			*dl++ = s[5];	/* LFE */
    916 			*d++ = s[3];	/* SL */
    917 			*d++ = s[4];	/* SR */
    918 #else
    919 			/*
    920 			 * WAV: [L,R,C,LFE,SL,SR]
    921 			 *  => [SL,SR]
    922 			 *  => [C]
    923 			 *  => [LFE]
    924 			 */
    925 			*dc++ = s[2];	/* C */
    926 			*dl++ = s[3];	/* LFE */
    927 			*d++ = s[4];	/* SL */
    928 			*d++ = s[5];	/* SR */
    929 #endif
    930 			s += 6;
    931 		}
    932 
    933 		s = (uint16_t *)src;
    934 		d = (uint16_t *)src;
    935 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    936 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    937 			/* AAC: [C,L,R,SL,SR,LFE] => [L,R] */
    938 			*d++ = s[1];
    939 			*d++ = s[2];
    940 #else
    941 			/* WAV: [L,R,C,LFE,SL,SR] => [L,R] */
    942 			*d++ = s[0];
    943 			*d++ = s[1];
    944 #endif
    945 			s += 6;
    946 		}
    947 
    948 		src = (char *)src + blksize;
    949 		dst = (char *)dst + blksize;
    950 	}
    951 }
    952 
    953 static void
    954 channel_splitter(struct gcscaudio_softc *sc)
    955 {
    956 	int splitsize, left;
    957 	void *src, *dst;
    958 
    959 	if (sc->sc_mch_splitter == NULL)
    960 		return;
    961 
    962 	left = sc->sc_mch_split_size - sc->sc_mch_split_off;
    963 	splitsize = sc->sc_mch_split_blksize;
    964 	if (left < splitsize)
    965 		splitsize = left;
    966 
    967 	src = (char *)sc->sc_mch_split_start + sc->sc_mch_split_off;
    968 	dst = (char *)sc->sc_mch_split_buf + sc->sc_mch_split_off;
    969 
    970 	sc->sc_mch_splitter(dst, src, splitsize, sc->sc_mch_split_blksize);
    971 
    972 	sc->sc_mch_split_off += sc->sc_mch_split_blksize;
    973 	if (sc->sc_mch_split_off >= sc->sc_mch_split_size)
    974 		sc->sc_mch_split_off = 0;
    975 }
    976 
    977 static int
    978 gcscaudio_trigger_output(void *addr, void *start, void *end, int blksize,
    979                          void (*intr)(void *), void *arg,
    980                          const audio_params_t *param)
    981 {
    982 	struct gcscaudio_softc *sc;
    983 	size_t size;
    984 
    985 	sc = (struct gcscaudio_softc *)addr;
    986 	sc->sc_play.ch_intr = intr;
    987 	sc->sc_play.ch_intr_arg = arg;
    988 	size = (char *)end - (char *)start;
    989 
    990 	switch (sc->sc_play.ch_params.channels) {
    991 	case 2:
    992 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
    993 		    blksize, 0))
    994 			return EINVAL;
    995 
    996 		if (!AC97_IS_4CH(sc->codec_if)) {
    997 			/*
    998 			 * output 2ch PCM to FRONT.LR(BM0)
    999 			 *
   1000 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
   1001 			 *
   1002 			 */
   1003 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1004 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1005 
   1006 			/* start DMA transfer */
   1007 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1008 			    ACC_BMx_CMD_WRITE |
   1009 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1010 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1011 		} else {
   1012 			/*
   1013 			 * output same PCM to FRONT.LR(BM0) and SURROUND.LR(BM6).
   1014 			 * CENTER(BM4) and LFE(BM7) doesn't sound.
   1015 			 *
   1016 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
   1017 			 *                             BM6: (same of BM0)
   1018 			 *                             BM4: none
   1019 			 *                             BM7: none
   1020 			 */
   1021 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1022 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1023 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1024 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1025 
   1026 			/* start DMA transfer */
   1027 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1028 			    ACC_BMx_CMD_WRITE |
   1029 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1030 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1031 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1032 			    ACC_BMx_CMD_WRITE |
   1033 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1034 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1035 		}
   1036 		break;
   1037 	case 4:
   1038 		/*
   1039 		 * output 4ch PCM split to FRONT.LR(BM0) and SURROUND.LR(BM6).
   1040 		 * CENTER(BM4) and LFE(BM7) doesn't sound.
   1041 		 *
   1042 		 * rearrange ordered channel to continuous per channel
   1043 		 *
   1044 		 *   4ch: L,R,SL,SR,L,R,SL,SR,... => BM0: L,R,L,R,...
   1045 		 *                                   BM6: SL,SR,SL,SR,...
   1046 		 *                                   BM4: none
   1047 		 *                                   BM7: none
   1048 		 */
   1049 		if (sc->sc_mch_split_buf)
   1050 			gcscaudio_free(sc, sc->sc_mch_split_buf,
   1051 			    sc->sc_mch_split_size);
   1052 
   1053 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
   1054 		    size)) == NULL)
   1055 			return ENOMEM;
   1056 
   1057 		/*
   1058 		 * 1st and 2nd blocks are split immediately.
   1059 		 * Other blocks will be split synchronous with intr.
   1060 		 */
   1061 		split_buffer_4ch(sc->sc_mch_split_buf, start, blksize * 2,
   1062 		    blksize);
   1063 
   1064 		sc->sc_mch_split_start = start;
   1065 		sc->sc_mch_split_size = size;
   1066 		sc->sc_mch_split_blksize = blksize;
   1067 		sc->sc_mch_split_off = (blksize * 2) % size;
   1068 		sc->sc_mch_splitter = split_buffer_4ch;	/* split function */
   1069 
   1070 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
   1071 		    blksize / 2, 0))
   1072 			return EINVAL;
   1073 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1074 		    size, blksize, blksize / 2, 0))
   1075 			return EINVAL;
   1076 
   1077 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1078 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1079 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1080 		    PRDADDR(PRD_TABLE_SURR, 0));
   1081 
   1082 		/* start DMA transfer */
   1083 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1084 		    ACC_BMx_CMD_WRITE |
   1085 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1086 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1087 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1088 		    ACC_BMx_CMD_WRITE |
   1089 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1090 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1091 		break;
   1092 	case 6:
   1093 		/*
   1094 		 * output 6ch PCM split to
   1095 		 * FRONT.LR(BM0), SURROUND.LR(BM6), CENTER(BM4) and LFE(BM7)
   1096 		 *
   1097 		 * rearrange ordered channel to continuous per channel
   1098 		 *
   1099 		 *   5.1ch: L,R,C,LFE,SL,SR,... => BM0: L,R,...
   1100 		 *                                 BM4: C,...
   1101 		 *                                 BM6: SL,SR,...
   1102 		 *                                 BM7: LFE,...
   1103 		 *
   1104 		 */
   1105 		if (sc->sc_mch_split_buf)
   1106 			gcscaudio_free(sc, sc->sc_mch_split_buf,
   1107 			    sc->sc_mch_split_size);
   1108 
   1109 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
   1110 		    size)) == NULL)
   1111 			return ENOMEM;
   1112 
   1113 		/*
   1114 		 * 1st and 2nd blocks are split immediately.
   1115 		 * Other block will be split synchronous with intr.
   1116 		 */
   1117 		split_buffer_6ch(sc->sc_mch_split_buf, start, blksize * 2,
   1118 		    blksize);
   1119 
   1120 		sc->sc_mch_split_start = start;
   1121 		sc->sc_mch_split_size = size;
   1122 		sc->sc_mch_split_blksize = blksize;
   1123 		sc->sc_mch_split_off = (blksize * 2) % size;
   1124 		sc->sc_mch_splitter = split_buffer_6ch;	/* split function */
   1125 
   1126 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
   1127 		    blksize / 3, 0))
   1128 			return EINVAL;
   1129 		if (build_prdtables(sc, PRD_TABLE_CENTER, sc->sc_mch_split_buf,
   1130 		    size, blksize, blksize / 3, blksize / 2))
   1131 			return EINVAL;
   1132 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1133 		    size, blksize, blksize / 3, 0))
   1134 			return EINVAL;
   1135 		if (build_prdtables(sc, PRD_TABLE_LFE, sc->sc_mch_split_buf,
   1136 		    size, blksize, blksize / 3, blksize / 2 + blksize / 4))
   1137 			return EINVAL;
   1138 
   1139 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1140 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1141 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_PRD,
   1142 		    PRDADDR(PRD_TABLE_CENTER, 0));
   1143 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1144 		    PRDADDR(PRD_TABLE_SURR, 0));
   1145 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_PRD,
   1146 		    PRDADDR(PRD_TABLE_LFE, 0));
   1147 
   1148 		/* start DMA transfer */
   1149 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1150 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1151 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1152 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM4_CMD,
   1153 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1154 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1155 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1156 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1157 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1158 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
   1159 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1160 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1161 		break;
   1162 	}
   1163 
   1164 	return 0;
   1165 }
   1166 
   1167 static int
   1168 gcscaudio_trigger_input(void *addr, void *start, void *end, int blksize,
   1169                         void (*intr)(void *), void *arg,
   1170                         const audio_params_t *param)
   1171 {
   1172 	struct gcscaudio_softc *sc;
   1173 	size_t size;
   1174 
   1175 	sc = (struct gcscaudio_softc *)addr;
   1176 	sc->sc_rec.ch_intr = intr;
   1177 	sc->sc_rec.ch_intr_arg = arg;
   1178 	size = (char *)end - (char *)start;
   1179 
   1180 	if (build_prdtables(sc, PRD_TABLE_REC, start, size, blksize, blksize, 0))
   1181 		return EINVAL;
   1182 
   1183 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_PRD,
   1184 	    PRDADDR(PRD_TABLE_REC, 0));
   1185 
   1186 	/* start transfer */
   1187 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
   1188 	    ACC_BMx_CMD_READ |
   1189 	    ACC_BMx_CMD_BYTE_ORD_EL |
   1190 	    ACC_BMx_CMD_BM_CTL_ENABLE);
   1191 
   1192 	return 0;
   1193 }
   1194 
   1195 static void
   1196 gcscaudio_get_locks(void *arg, kmutex_t **intr, kmutex_t **thread)
   1197 {
   1198 	struct gcscaudio_softc *sc;
   1199 
   1200 	sc = (struct gcscaudio_softc *)arg;
   1201 
   1202 	*intr = &sc->sc_intr_lock;
   1203 	*thread = &sc->sc_lock;
   1204 }
   1205 
   1206 static int
   1207 gcscaudio_intr(void *arg)
   1208 {
   1209 	struct gcscaudio_softc *sc;
   1210 	uint16_t intr;
   1211 	uint8_t bmstat;
   1212 	int nintr;
   1213 
   1214 	nintr = 0;
   1215 	sc = (struct gcscaudio_softc *)arg;
   1216 
   1217 	mutex_spin_enter(&sc->sc_intr_lock);
   1218 
   1219 	intr = bus_space_read_2(sc->sc_iot, sc->sc_ioh, ACC_IRQ_STATUS);
   1220 	if (intr == 0)
   1221 		goto done;
   1222 
   1223 	/* Front output */
   1224 	if (intr & ACC_IRQ_STATUS_BM0_IRQ_STS) {
   1225 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_STATUS);
   1226 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1227 			aprint_normal_dev(sc->sc_dev, "BM0: Bus Master Error\n");
   1228 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1229 			aprint_normal_dev(sc->sc_dev, "BM0: NO End of Page?\n");
   1230 
   1231 		if (sc->sc_play.ch_intr) {
   1232 			sc->sc_play.ch_intr(sc->sc_play.ch_intr_arg);
   1233 			channel_splitter(sc);
   1234 		}
   1235 		nintr++;
   1236 	}
   1237 
   1238 	/* Center output */
   1239 	if (intr & ACC_IRQ_STATUS_BM4_IRQ_STS) {
   1240 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM4_STATUS);
   1241 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1242 			aprint_normal_dev(sc->sc_dev, "BM4: Bus Master Error\n");
   1243 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1244 			aprint_normal_dev(sc->sc_dev, "BM4: NO End of Page?\n");
   1245 
   1246 		nintr++;
   1247 	}
   1248 
   1249 	/* Surround output */
   1250 	if (intr & ACC_IRQ_STATUS_BM6_IRQ_STS) {
   1251 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_STATUS);
   1252 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1253 			aprint_normal_dev(sc->sc_dev, "BM6: Bus Master Error\n");
   1254 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1255 			aprint_normal_dev(sc->sc_dev, "BM6: NO End of Page?\n");
   1256 
   1257 		nintr++;
   1258 	}
   1259 
   1260 	/* LowFrequencyEffect output */
   1261 	if (intr & ACC_IRQ_STATUS_BM7_IRQ_STS) {
   1262 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_STATUS);
   1263 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1264 			aprint_normal_dev(sc->sc_dev, "BM7: Bus Master Error\n");
   1265 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1266 			aprint_normal_dev(sc->sc_dev, "BM7: NO End of Page?\n");
   1267 
   1268 		nintr++;
   1269 	}
   1270 
   1271 	/* record */
   1272 	if (intr & ACC_IRQ_STATUS_BM1_IRQ_STS) {
   1273 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_STATUS);
   1274 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1275 			aprint_normal_dev(sc->sc_dev, "BM1: Bus Master Error\n");
   1276 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1277 			aprint_normal_dev(sc->sc_dev, "BM1: NO End of Page?\n");
   1278 
   1279 		if (sc->sc_rec.ch_intr) {
   1280 			sc->sc_rec.ch_intr(sc->sc_rec.ch_intr_arg);
   1281 		}
   1282 		nintr++;
   1283 	}
   1284 
   1285 #ifdef GCSCAUDIO_DEBUG
   1286 	if (intr & ACC_IRQ_STATUS_IRQ_STS)
   1287 		aprint_normal_dev(sc->sc_dev, "Codec GPIO IRQ Status\n");
   1288 	if (intr & ACC_IRQ_STATUS_WU_IRQ_STS)
   1289 		aprint_normal_dev(sc->sc_dev, "Codec GPIO Wakeup IRQ Status\n");
   1290 	if (intr & ACC_IRQ_STATUS_BM2_IRQ_STS)
   1291 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 2 IRQ Status\n");
   1292 	if (intr & ACC_IRQ_STATUS_BM3_IRQ_STS)
   1293 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 3 IRQ Status\n");
   1294 	if (intr & ACC_IRQ_STATUS_BM5_IRQ_STS)
   1295 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 5 IRQ Status\n");
   1296 #endif
   1297 
   1298 done:
   1299 	mutex_spin_exit(&sc->sc_intr_lock);
   1300 
   1301 	return nintr ? 1 : 0;
   1302 }
   1303 
   1304 static bool
   1305 gcscaudio_resume(device_t dv, const pmf_qual_t *qual)
   1306 {
   1307 	struct gcscaudio_softc *sc = device_private(dv);
   1308 
   1309 	gcscaudio_reset_codec(sc);
   1310 	DELAY(1000);
   1311 	(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
   1312 
   1313 	return true;
   1314 }
   1315 
   1316 static int
   1317 gcscaudio_allocate_dma(struct gcscaudio_softc *sc, size_t size, void **addrp,
   1318                        bus_dma_segment_t *seglist, int nseg, int *rsegp,
   1319                        bus_dmamap_t *mapp)
   1320 {
   1321 	int error;
   1322 
   1323 	if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, seglist,
   1324 	    nseg, rsegp, BUS_DMA_WAITOK)) != 0) {
   1325 		aprint_error_dev(sc->sc_dev,
   1326 		    "unable to allocate DMA buffer, error=%d\n", error);
   1327 		goto fail_alloc;
   1328 	}
   1329 
   1330 	if ((error = bus_dmamem_map(sc->sc_dmat, seglist, nseg, size, addrp,
   1331 	    BUS_DMA_WAITOK | BUS_DMA_COHERENT)) != 0) {
   1332 		aprint_error_dev(sc->sc_dev,
   1333 		    "unable to map DMA buffer, error=%d\n",
   1334 		    error);
   1335 		goto fail_map;
   1336 	}
   1337 
   1338 	if ((error = bus_dmamap_create(sc->sc_dmat, size, nseg, size, 0,
   1339 	    BUS_DMA_WAITOK, mapp)) != 0) {
   1340 		aprint_error_dev(sc->sc_dev,
   1341 		    "unable to create DMA map, error=%d\n", error);
   1342 		goto fail_create;
   1343 	}
   1344 
   1345 	if ((error = bus_dmamap_load(sc->sc_dmat, *mapp, *addrp, size, NULL,
   1346 	    BUS_DMA_WAITOK)) != 0) {
   1347 		aprint_error_dev(sc->sc_dev,
   1348 		    "unable to load DMA map, error=%d\n", error);
   1349 		goto fail_load;
   1350 	}
   1351 
   1352 	return 0;
   1353 
   1354 fail_load:
   1355 	bus_dmamap_destroy(sc->sc_dmat, *mapp);
   1356 fail_create:
   1357 	bus_dmamem_unmap(sc->sc_dmat, *addrp, size);
   1358 fail_map:
   1359 	bus_dmamem_free(sc->sc_dmat, seglist, nseg);
   1360 fail_alloc:
   1361 	return error;
   1362 }
   1363