Home | History | Annotate | Line # | Download | only in pci
gcscaudio.c revision 1.16.2.1
      1 /*	$NetBSD: gcscaudio.c,v 1.16.2.1 2019/04/21 05:11:22 isaki 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 1.16.2.1 2019/04/21 05:11:22 isaki 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 #define GCSCAUDIO_FORMAT(aumode, ch, chmask) \
    219 	{ \
    220 		.mode		= (aumode), \
    221 		.encoding	= AUDIO_ENCODING_SLINEAR_LE, \
    222 		.validbits	= 16, \
    223 		.precision	= 16, \
    224 		.channels	= (ch), \
    225 		.channel_mask	= (chmask), \
    226 		.frequency_type	= 0, \
    227 		.frequency	= { 8000, 48000 }, \
    228 	}
    229 static const struct audio_format gcscaudio_formats_2ch =
    230 	GCSCAUDIO_FORMAT(AUMODE_PLAY | AUMODE_RECORD, 2, AUFMT_STEREO);
    231 
    232 static const struct audio_format gcscaudio_formats_4ch =
    233 	GCSCAUDIO_FORMAT(AUMODE_PLAY                , 4, AUFMT_SURROUND4);
    234 
    235 static const struct audio_format gcscaudio_formats_6ch =
    236 	GCSCAUDIO_FORMAT(AUMODE_PLAY                , 6, AUFMT_DOLBY_5_1);
    237 
    238 static int
    239 gcscaudio_match(device_t parent, cfdata_t match, void *aux)
    240 {
    241 	struct pci_attach_args *pa;
    242 
    243 	pa = (struct pci_attach_args *)aux;
    244 	if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD) &&
    245 	    (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_CS5536_AUDIO))
    246 		return 1;
    247 
    248 	return 0;
    249 }
    250 
    251 static int
    252 gcscaudio_append_formats(struct gcscaudio_softc *sc,
    253                          const struct audio_format *format)
    254 {
    255 	if (sc->sc_nformats >= GCSCAUDIO_MAXFORMATS) {
    256 		aprint_error_dev(sc->sc_dev, "too many formats\n");
    257 		return EINVAL;
    258 	}
    259 	sc->sc_formats[sc->sc_nformats++] = *format;
    260 	return 0;
    261 }
    262 
    263 static void
    264 gcscaudio_attach(device_t parent, device_t self, void *aux)
    265 {
    266 	struct gcscaudio_softc *sc;
    267 	struct pci_attach_args *pa;
    268 	const char *intrstr;
    269 	pci_intr_handle_t ih;
    270 	int rc, i;
    271 	char intrbuf[PCI_INTRSTR_LEN];
    272 
    273 	sc = device_private(self);
    274 
    275 	sc->sc_dev = self;
    276 
    277 	aprint_naive(": Audio controller\n");
    278 
    279 	pa = aux;
    280 	sc->sc_pc = pa->pa_pc;
    281 	sc->sc_pt = pa->pa_tag;
    282 	sc->sc_dmat = pa->pa_dmat;
    283 	LIST_INIT(&sc->sc_dmalist);
    284 	sc->sc_mch_split_buf = NULL;
    285 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    286 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    287 
    288 	aprint_normal(": AMD Geode CS5536 Audio\n");
    289 
    290 	if (pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
    291 	    &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios)) {
    292 		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
    293 		return;
    294 	}
    295 
    296 	if (pci_intr_map(pa, &ih)) {
    297 		aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
    298 		goto attach_failure_unmap;
    299 	}
    300 	intrstr = pci_intr_string(sc->sc_pc, ih, intrbuf, sizeof(intrbuf));
    301 
    302 	sc->sc_ih = pci_intr_establish_xname(sc->sc_pc, ih, IPL_AUDIO,
    303 	    gcscaudio_intr, sc, device_xname(self));
    304 	if (sc->sc_ih == NULL) {
    305 		aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
    306 		if (intrstr != NULL)
    307 			aprint_error(" at %s", intrstr);
    308 		aprint_error("\n");
    309 		goto attach_failure_unmap;
    310 	}
    311 
    312 	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
    313 
    314 
    315 	if (gcscaudio_allocate_dma(sc, sizeof(*sc->sc_prd.p_prdtables),
    316 	    (void **)&(sc->sc_prd.p_prdtables), sc->sc_prd.p_prdsegs, 1,
    317 	    &(sc->sc_prd.p_prdnseg), &(sc->sc_prd.p_prdmap)) != 0)
    318 		goto attach_failure_intr;
    319 
    320 	sc->host_if.arg = sc;
    321 	sc->host_if.attach = gcscaudio_attach_codec;
    322 	sc->host_if.read = gcscaudio_read_codec;
    323 	sc->host_if.write = gcscaudio_write_codec;
    324 	sc->host_if.reset = gcscaudio_reset_codec;
    325 	sc->host_if.spdif_event = gcscaudio_spdif_event_codec;
    326 
    327 	if ((rc = ac97_attach(&sc->host_if, self, &sc->sc_lock)) != 0) {
    328 		aprint_error_dev(sc->sc_dev,
    329 		    "can't attach codec (error=%d)\n", rc);
    330 		goto attach_failure_intr;
    331 	}
    332 
    333 	if (!pmf_device_register(self, NULL, gcscaudio_resume))
    334 		aprint_error_dev(self, "couldn't establish power handler\n");
    335 
    336 
    337 	sc->sc_nformats = 0;
    338 	gcscaudio_append_formats(sc, &gcscaudio_formats_2ch);
    339 
    340 	mutex_enter(&sc->sc_lock);
    341 	if (AC97_IS_4CH(sc->codec_if))
    342 		gcscaudio_append_formats(sc, &gcscaudio_formats_4ch);
    343 	if (AC97_IS_6CH(sc->codec_if))
    344 		gcscaudio_append_formats(sc, &gcscaudio_formats_6ch);
    345 	if (AC97_IS_FIXED_RATE(sc->codec_if)) {
    346 		for (i = 0; i < sc->sc_nformats; i++) {
    347 			sc->sc_formats[i].frequency_type = 1;
    348 			sc->sc_formats[i].frequency[0] = 48000;
    349 		}
    350 	}
    351 	mutex_exit(&sc->sc_lock);
    352 
    353 	if ((rc = auconv_create_encodings(sc->sc_formats, sc->sc_nformats,
    354 	    &sc->sc_encodings)) != 0) {
    355 		aprint_error_dev(self,
    356 		    "auconv_create_encoding: error=%d\n", rc);
    357 		goto attach_failure_codec;
    358 	}
    359 
    360 	audio_attach_mi(&gcscaudio_hw_if, sc, sc->sc_dev);
    361 	return;
    362 
    363 attach_failure_codec:
    364 	sc->codec_if->vtbl->detach(sc->codec_if);
    365 attach_failure_intr:
    366 	pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
    367 attach_failure_unmap:
    368 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
    369 	return;
    370 }
    371 
    372 static int
    373 gcscaudio_attach_codec(void *arg, struct ac97_codec_if *codec_if)
    374 {
    375 	struct gcscaudio_softc *sc;
    376 
    377 	sc = (struct gcscaudio_softc *)arg;
    378 	sc->codec_if = codec_if;
    379 	return 0;
    380 }
    381 
    382 static int
    383 gcscaudio_reset_codec(void *arg)
    384 {
    385 	struct gcscaudio_softc *sc;
    386 	sc = (struct gcscaudio_softc *)arg;
    387 
    388 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    389 	    ACC_CODEC_CNTL_LNK_WRM_RST |
    390 	    ACC_CODEC_CNTL_CMD_NEW);
    391 
    392 	if (gcscaudio_wait_ready_codec(sc, "reset timeout\n"))
    393 		return 1;
    394 
    395 	return 0;
    396 }
    397 
    398 static void
    399 gcscaudio_spdif_event_codec(void *arg, bool flag)
    400 {
    401 	struct gcscaudio_softc *sc;
    402 
    403 	sc = (struct gcscaudio_softc *)arg;
    404 	sc->sc_spdif = flag;
    405 }
    406 
    407 static int
    408 gcscaudio_wait_ready_codec(struct gcscaudio_softc *sc, const char *timeout_msg)
    409 {
    410 	int i;
    411 
    412 #define GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT	500
    413 	for (i = GCSCAUDIO_WAIT_READY_CODEC_TIMEOUT; (i >= 0) &&
    414 	    (bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL) &
    415 	    ACC_CODEC_CNTL_CMD_NEW); i--)
    416 		delay(1);
    417 
    418 	if (i < 0) {
    419 		aprint_error_dev(sc->sc_dev, "%s", timeout_msg);
    420 		return 1;
    421 	}
    422 
    423 	return 0;
    424 }
    425 
    426 static int
    427 gcscaudio_write_codec(void *arg, uint8_t reg, uint16_t val)
    428 {
    429 	struct gcscaudio_softc *sc;
    430 
    431 	sc = (struct gcscaudio_softc *)arg;
    432 
    433 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    434 	    ACC_CODEC_CNTL_WRITE_CMD |
    435 	    ACC_CODEC_CNTL_CMD_NEW |
    436 	    ACC_CODEC_REG2ADDR(reg) |
    437 	    (val & ACC_CODEC_CNTL_CMD_DATA_MASK));
    438 
    439 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout\n"))
    440 		return 1;
    441 
    442 #ifdef GCSCAUDIO_CODEC_DEBUG
    443 	aprint_error_dev(sc->sc_dev, "codec write: reg=0x%02x, val=0x%04x\n",
    444 	    reg, val);
    445 #endif
    446 
    447 	return 0;
    448 }
    449 
    450 static int
    451 gcscaudio_read_codec(void *arg, uint8_t reg, uint16_t *val)
    452 {
    453 	struct gcscaudio_softc *sc;
    454 	uint32_t v;
    455 	int i;
    456 
    457 	sc = (struct gcscaudio_softc *)arg;
    458 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_CNTL,
    459 	    ACC_CODEC_CNTL_READ_CMD | ACC_CODEC_CNTL_CMD_NEW |
    460 	    ACC_CODEC_REG2ADDR(reg));
    461 
    462 	if (gcscaudio_wait_ready_codec(sc, "codec write timeout for reading"))
    463 		return 1;
    464 
    465 #define GCSCAUDIO_READ_CODEC_TIMEOUT	50
    466 	for (i = GCSCAUDIO_READ_CODEC_TIMEOUT; i >= 0; i--) {
    467 		v = bus_space_read_4(sc->sc_iot, sc->sc_ioh, ACC_CODEC_STATUS);
    468 		if ((v & ACC_CODEC_STATUS_STS_NEW) &&
    469 		    (ACC_CODEC_ADDR2REG(v) == reg))
    470 			break;
    471 
    472 		delay(10);
    473 	}
    474 
    475 	if (i < 0) {
    476 		aprint_error_dev(sc->sc_dev, "codec read timeout\n");
    477 		return 1;
    478 	}
    479 
    480 #ifdef GCSCAUDIO_CODEC_DEBUG
    481 	aprint_error_dev(sc->sc_dev, "codec read: reg=0x%02x, val=0x%04x\n",
    482 	    reg, v & ACC_CODEC_STATUS_STS_DATA_MASK);
    483 #endif
    484 
    485 	*val = v;
    486 	return 0;
    487 }
    488 
    489 static int
    490 gcscaudio_open(void *arg, int flags)
    491 {
    492 	struct gcscaudio_softc *sc;
    493 
    494 	sc = (struct gcscaudio_softc *)arg;
    495 	sc->codec_if->vtbl->lock(sc->codec_if);
    496 	return 0;
    497 }
    498 
    499 static void
    500 gcscaudio_close(void *arg)
    501 {
    502 	struct gcscaudio_softc *sc;
    503 
    504 	sc = (struct gcscaudio_softc *)arg;
    505 	sc->codec_if->vtbl->unlock(sc->codec_if);
    506 }
    507 
    508 static int
    509 gcscaudio_query_encoding(void *arg, struct audio_encoding *fp)
    510 {
    511 	struct gcscaudio_softc *sc;
    512 
    513 	sc = (struct gcscaudio_softc *)arg;
    514 	return auconv_query_encoding(sc->sc_encodings, fp);
    515 }
    516 
    517 static int
    518 gcscaudio_set_params_ch(struct gcscaudio_softc *sc,
    519                         struct gcscaudio_softc_ch *ch, int mode,
    520                         audio_params_t *p, stream_filter_list_t *fil)
    521 {
    522 	int error, idx;
    523 
    524 	if ((p->sample_rate < 8000) || (p->sample_rate > 48000))
    525 		return EINVAL;
    526 
    527 	if (p->precision != 8 && p->precision != 16)
    528 		return EINVAL;
    529 
    530 	if ((idx = auconv_set_converter(sc->sc_formats, sc->sc_nformats,
    531 	    mode, p, TRUE, fil)) < 0)
    532 		return EINVAL;
    533 
    534 	if (fil->req_size > 0)
    535 		p = &fil->filters[0].param;
    536 
    537 	if (mode == AUMODE_PLAY) {
    538 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    539 			/* setup rate of DAC */
    540 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    541 			    AC97_REG_PCM_FRONT_DAC_RATE, &p->sample_rate)) != 0)
    542 				return error;
    543 
    544 			/* additional rate of DAC for Surround */
    545 			if ((p->channels >= 4) &&
    546 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    547 			    AC97_REG_PCM_SURR_DAC_RATE, &p->sample_rate)) != 0)
    548 				return error;
    549 
    550 			/* additional rate of DAC for LowFrequencyEffect */
    551 			if ((p->channels == 6) &&
    552 			    (error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    553 			    AC97_REG_PCM_LFE_DAC_RATE, &p->sample_rate)) != 0)
    554 				return error;
    555 		}
    556 	}
    557 
    558 	if (mode == AUMODE_RECORD) {
    559 		if (!AC97_IS_FIXED_RATE(sc->codec_if)) {
    560 			/* setup rate of ADC */
    561 			if ((error = sc->codec_if->vtbl->set_rate(sc->codec_if,
    562 			    AC97_REG_PCM_LR_ADC_RATE, &p->sample_rate)) != 0)
    563 				return error;
    564 		}
    565 	}
    566 
    567 	ch->ch_params = *p;
    568 	return 0;
    569 }
    570 
    571 static int
    572 gcscaudio_set_params(void *arg, int setmode, int usemode,
    573                      audio_params_t *play, audio_params_t *rec,
    574                      stream_filter_list_t *pfil, stream_filter_list_t *rfil)
    575 {
    576 	struct gcscaudio_softc *sc;
    577 	int error;
    578 
    579 	sc = (struct gcscaudio_softc *)arg;
    580 
    581 	if (setmode & AUMODE_PLAY) {
    582 		if ((error = gcscaudio_set_params_ch(sc, &sc->sc_play,
    583 		    AUMODE_PLAY, play, pfil)) != 0)
    584 			return error;
    585 	}
    586 	if (setmode & AUMODE_RECORD) {
    587 		if ((error = gcscaudio_set_params_ch(sc, &sc->sc_rec,
    588 		    AUMODE_RECORD, rec, rfil)) != 0)
    589 			return error;
    590 	}
    591 
    592 	return 0;
    593 }
    594 
    595 static int
    596 gcscaudio_round_blocksize(void *arg, int blk, int mode,
    597                           const audio_params_t *param)
    598 {
    599 	blk &= -4;
    600 	if (blk > GCSCAUDIO_PRD_SIZE_MAX)
    601 		blk = GCSCAUDIO_PRD_SIZE_MAX;
    602 
    603 	return blk;
    604 }
    605 
    606 static int
    607 gcscaudio_halt_output(void *arg)
    608 {
    609 	struct gcscaudio_softc *sc;
    610 
    611 	sc = (struct gcscaudio_softc *)arg;
    612 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
    613 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    614 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_CMD,
    615 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    616 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
    617 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    618 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
    619 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    620 	sc->sc_play.ch_intr = NULL;
    621 
    622 	/* channel splitter */
    623 	sc->sc_mch_splitter = NULL;
    624 	if (sc->sc_mch_split_buf)
    625 		gcscaudio_free(sc, sc->sc_mch_split_buf, sc->sc_mch_split_size);
    626 	sc->sc_mch_split_buf = NULL;
    627 
    628 	return 0;
    629 }
    630 
    631 static int
    632 gcscaudio_halt_input(void *arg)
    633 {
    634 	struct gcscaudio_softc *sc;
    635 
    636 	sc = (struct gcscaudio_softc *)arg;
    637 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
    638 	    ACC_BMx_CMD_BM_CTL_DISABLE);
    639 	sc->sc_rec.ch_intr = NULL;
    640 	return 0;
    641 }
    642 
    643 static int
    644 gcscaudio_getdev(void *addr, struct audio_device *retp)
    645 {
    646 	*retp = gcscaudio_device;
    647 	return 0;
    648 }
    649 
    650 static int
    651 gcscaudio_set_port(void *addr, mixer_ctrl_t *cp)
    652 {
    653 	struct gcscaudio_softc *sc;
    654 
    655 	sc = addr;
    656 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp);
    657 }
    658 
    659 static int
    660 gcscaudio_get_port(void *addr, mixer_ctrl_t *cp)
    661 {
    662 	struct gcscaudio_softc *sc;
    663 
    664 	sc = addr;
    665 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp);
    666 }
    667 
    668 static int
    669 gcscaudio_query_devinfo(void *addr, mixer_devinfo_t *dip)
    670 {
    671 	struct gcscaudio_softc *sc;
    672 
    673 	sc = addr;
    674 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, dip);
    675 }
    676 
    677 static void *
    678 gcscaudio_malloc(void *arg, int direction, size_t size)
    679 {
    680 	struct gcscaudio_softc *sc;
    681 	struct gcscaudio_dma *p;
    682 	int error;
    683 
    684 	sc = (struct gcscaudio_softc *)arg;
    685 
    686 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
    687 	p->size = size;
    688 
    689 	error = gcscaudio_allocate_dma(sc, size, &p->addr,
    690 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]), &p->nseg, &p->map);
    691 	if (error) {
    692 		kmem_free(p, sizeof(*p));
    693 		return NULL;
    694 	}
    695 
    696 	LIST_INSERT_HEAD(&sc->sc_dmalist, p, list);
    697 	return p->addr;
    698 }
    699 
    700 static void
    701 gcscaudio_free(void *arg, void *ptr, size_t size)
    702 {
    703 	struct gcscaudio_softc *sc;
    704 	struct gcscaudio_dma *p;
    705 
    706 	sc = (struct gcscaudio_softc *)arg;
    707 
    708 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    709 		if (p->addr == ptr) {
    710 			bus_dmamap_unload(sc->sc_dmat, p->map);
    711 			bus_dmamap_destroy(sc->sc_dmat, p->map);
    712 			bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    713 			bus_dmamem_free(sc->sc_dmat, p->segs, p->nseg);
    714 
    715 			LIST_REMOVE(p, list);
    716 			kmem_free(p, sizeof(*p));
    717 			break;
    718 		}
    719 	}
    720 }
    721 
    722 static paddr_t
    723 gcscaudio_mappage(void *arg, void *mem, off_t off, int prot)
    724 {
    725 	struct gcscaudio_softc *sc;
    726 	struct gcscaudio_dma *p;
    727 
    728 	if (off < 0)
    729 		return -1;
    730 
    731 	sc = (struct gcscaudio_softc *)arg;
    732 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    733 		if (p->addr == mem) {
    734 			return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nseg,
    735 			    off, prot, BUS_DMA_WAITOK);
    736 		}
    737 	}
    738 
    739 	return -1;
    740 }
    741 
    742 static size_t
    743 gcscaudio_round_buffersize(void *addr, int direction, size_t size)
    744 {
    745 	if (size > GCSCAUDIO_BUFSIZE_MAX)
    746 		size = GCSCAUDIO_BUFSIZE_MAX;
    747 
    748 	return size;
    749 }
    750 
    751 static int
    752 gcscaudio_get_props(void *addr)
    753 {
    754 	struct gcscaudio_softc *sc;
    755 	int props;
    756 
    757 	sc = (struct gcscaudio_softc *)addr;
    758 	props = AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
    759 	/*
    760 	 * Even if the codec is fixed-rate, set_param() succeeds for any sample
    761 	 * rate because of aurateconv.  Applications can't know what rate the
    762 	 * device can process in the case of mmap().
    763 	 */
    764 	if (!AC97_IS_FIXED_RATE(sc->codec_if))
    765 		props |= AUDIO_PROP_MMAP;
    766 	return props;
    767 }
    768 
    769 static int
    770 build_prdtables(struct gcscaudio_softc *sc, int prdidx,
    771                 void *addr, size_t size, int blksize, int blklen, int blkoff)
    772 {
    773 	struct gcscaudio_dma *p;
    774 	struct acc_prd *prdp;
    775 	bus_addr_t paddr;
    776 	int i;
    777 
    778 	/* get physical address of start */
    779 	paddr = (bus_addr_t)0;
    780 	LIST_FOREACH(p, &sc->sc_dmalist, list) {
    781 		if (p->addr == addr) {
    782 			paddr = p->map->dm_segs[0].ds_addr;
    783 			break;
    784 		}
    785 	}
    786 	if (!paddr) {
    787 		aprint_error_dev(sc->sc_dev, "bad addr %p\n", addr);
    788 		return EINVAL;
    789 	}
    790 
    791 #define PRDADDR(prdidx,idx) \
    792 	(sc->sc_prd.p_prdmap->dm_segs[0].ds_addr) + sizeof(struct acc_prd) * \
    793 	(((prdidx) * GCSCAUDIO_NPRDTABLE) + (idx))
    794 
    795 	/*
    796 	 * build PRD table
    797 	 *   prdtbl[] = <PRD0>, <PRD1>, <PRD2>, ..., <PRDn>, <jmp to PRD0>
    798 	 */
    799 	prdp = sc->sc_prd.p_prdtables->prdtbl[prdidx];
    800 	for (i = 0; size > 0; size -= blksize, i++) {
    801 		prdp[i].address = paddr + blksize * i + blkoff;
    802 		prdp[i].ctrlsize =
    803 		    (size < blklen ? size : blklen) | ACC_BMx_PRD_CTRL_EOP;
    804 	}
    805 	prdp[i].address = PRDADDR(prdidx, 0);
    806 	prdp[i].ctrlsize = ACC_BMx_PRD_CTRL_JMP;
    807 
    808 	bus_dmamap_sync(sc->sc_dmat, sc->sc_prd.p_prdmap, 0,
    809 	    sizeof(struct acc_prd) * i, BUS_DMASYNC_PREWRITE);
    810 
    811 	return 0;
    812 }
    813 
    814 static void
    815 split_buffer_4ch(void *dst, void *src, int size, int blksize)
    816 {
    817 	int left, i;
    818 	uint16_t *s, *d;
    819 
    820 	/*
    821 	 * src[blk0]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    822 	 * src[blk1]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    823 	 * src[blk2]: L,R,SL,SR,L,R,SL,SR,L,R,SL,SR,....
    824 	 *     :
    825 	 *
    826 	 *   rearrange to
    827 	 *
    828 	 * src[blk0]: L,R,L,R,L,R,L,R,..
    829 	 * src[blk1]: L,R,L,R,L,R,L,R,..
    830 	 * src[blk2]: L,R,L,R,L,R,L,R,..
    831 	 *     :
    832 	 * dst[blk0]: SL,SR,SL,SR,SL,SR,SL,SR,..
    833 	 * dst[blk1]: SL,SR,SL,SR,SL,SR,SL,SR,..
    834 	 * dst[blk2]: SL,SR,SL,SR,SL,SR,SL,SR,..
    835 	 *     :
    836 	 */
    837 	for (left = size; left > 0; left -= blksize) {
    838 		s = (uint16_t *)src;
    839 		d = (uint16_t *)dst;
    840 		for (i = 0; i < blksize / sizeof(uint16_t) / 4; i++) {
    841 			/* L,R,SL,SR -> SL,SR */
    842 			s++;
    843 			s++;
    844 			*d++ = *s++;
    845 			*d++ = *s++;
    846 		}
    847 
    848 		s = (uint16_t *)src;
    849 		d = (uint16_t *)src;
    850 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    851 			/* L,R,SL,SR -> L,R */
    852 			*d++ = *s++;
    853 			*d++ = *s++;
    854 			s++;
    855 			s++;
    856 		}
    857 
    858 		src = (char *)src + blksize;
    859 		dst = (char *)dst + blksize;
    860 	}
    861 }
    862 
    863 static void
    864 split_buffer_6ch(void *dst, void *src, int size, int blksize)
    865 {
    866 	int left, i;
    867 	uint16_t *s, *d, *dc, *dl;
    868 
    869 	/*
    870 	 * by default, treat as WAV style 5.1ch order
    871 	 *   5.1ch(WAV): L R C LFE SL SR
    872 	 *   5.1ch(AAC): C L R SL SR LFE
    873 	 *        :
    874 	 */
    875 
    876 	/*
    877 	 * src[blk0]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    878 	 * src[blk1]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    879 	 * src[blk2]: L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    880 	 *     :
    881 	 * src[N-1] : L,R,C,LFE,SL,SR,L,R,C,LFE,SL,SR,...
    882 	 *
    883 	 *   rearrange to
    884 	 *
    885 	 * src[blk0]: L,R,L,R,..
    886 	 * src[blk1]: L,R,L,R,..
    887 	 * src[blk2]: L,R,L,R,..
    888 	 *     :
    889 	 *
    890 	 * dst[blk0]: SL,SR,SL,SR,..
    891 	 * dst[blk1]: SL,SR,SL,SR,..
    892 	 * dst[blk2]: SL,SR,SL,SR,..
    893 	 *     :
    894 	 *
    895 	 * dst[N/2+0]: C,C,C,..
    896 	 * dst[N/2+1]: C,C,C,..
    897 	 *     :
    898 	 *
    899 	 * dst[N/2+N/4+0]: LFE,LFE,LFE,..
    900 	 * dst[N/2+N/4+1]: LFE,LFE,LFE,..
    901 	 *     :
    902 	 */
    903 
    904 	for (left = size; left > 0; left -= blksize) {
    905 		s = (uint16_t *)src;
    906 		d = (uint16_t *)dst;
    907 		dc = (uint16_t *)((char *)dst + blksize / 2);
    908 		dl = (uint16_t *)((char *)dst + blksize / 2 + blksize / 4);
    909 		for (i = 0; i < blksize / sizeof(uint16_t) / 6; i++) {
    910 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    911 			/*
    912 			 * AAC: [C,L,R,SL,SR,LFE]
    913 			 *  => [SL,SR]
    914 			 *  => [C]
    915 			 *  => [LFE]
    916 			 */
    917 			*dc++ = s[0];	/* C */
    918 			*dl++ = s[5];	/* LFE */
    919 			*d++ = s[3];	/* SL */
    920 			*d++ = s[4];	/* SR */
    921 #else
    922 			/*
    923 			 * WAV: [L,R,C,LFE,SL,SR]
    924 			 *  => [SL,SR]
    925 			 *  => [C]
    926 			 *  => [LFE]
    927 			 */
    928 			*dc++ = s[2];	/* C */
    929 			*dl++ = s[3];	/* LFE */
    930 			*d++ = s[4];	/* SL */
    931 			*d++ = s[5];	/* SR */
    932 #endif
    933 			s += 6;
    934 		}
    935 
    936 		s = (uint16_t *)src;
    937 		d = (uint16_t *)src;
    938 		for (i = 0; i < blksize / sizeof(uint16_t) / 2 / 2; i++) {
    939 #ifdef GCSCAUDIO_5_1CH_AAC_ORDER
    940 			/* AAC: [C,L,R,SL,SR,LFE] => [L,R] */
    941 			*d++ = s[1];
    942 			*d++ = s[2];
    943 #else
    944 			/* WAV: [L,R,C,LFE,SL,SR] => [L,R] */
    945 			*d++ = s[0];
    946 			*d++ = s[1];
    947 #endif
    948 			s += 6;
    949 		}
    950 
    951 		src = (char *)src + blksize;
    952 		dst = (char *)dst + blksize;
    953 	}
    954 }
    955 
    956 static void
    957 channel_splitter(struct gcscaudio_softc *sc)
    958 {
    959 	int splitsize, left;
    960 	void *src, *dst;
    961 
    962 	if (sc->sc_mch_splitter == NULL)
    963 		return;
    964 
    965 	left = sc->sc_mch_split_size - sc->sc_mch_split_off;
    966 	splitsize = sc->sc_mch_split_blksize;
    967 	if (left < splitsize)
    968 		splitsize = left;
    969 
    970 	src = (char *)sc->sc_mch_split_start + sc->sc_mch_split_off;
    971 	dst = (char *)sc->sc_mch_split_buf + sc->sc_mch_split_off;
    972 
    973 	sc->sc_mch_splitter(dst, src, splitsize, sc->sc_mch_split_blksize);
    974 
    975 	sc->sc_mch_split_off += sc->sc_mch_split_blksize;
    976 	if (sc->sc_mch_split_off >= sc->sc_mch_split_size)
    977 		sc->sc_mch_split_off = 0;
    978 }
    979 
    980 static int
    981 gcscaudio_trigger_output(void *addr, void *start, void *end, int blksize,
    982                          void (*intr)(void *), void *arg,
    983                          const audio_params_t *param)
    984 {
    985 	struct gcscaudio_softc *sc;
    986 	size_t size;
    987 
    988 	sc = (struct gcscaudio_softc *)addr;
    989 	sc->sc_play.ch_intr = intr;
    990 	sc->sc_play.ch_intr_arg = arg;
    991 	size = (char *)end - (char *)start;
    992 
    993 	switch (sc->sc_play.ch_params.channels) {
    994 	case 2:
    995 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
    996 		    blksize, 0))
    997 			return EINVAL;
    998 
    999 		if (!AC97_IS_4CH(sc->codec_if)) {
   1000 			/*
   1001 			 * output 2ch PCM to FRONT.LR(BM0)
   1002 			 *
   1003 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
   1004 			 *
   1005 			 */
   1006 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1007 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1008 
   1009 			/* start DMA transfer */
   1010 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1011 			    ACC_BMx_CMD_WRITE |
   1012 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1013 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1014 		} else {
   1015 			/*
   1016 			 * output same PCM to FRONT.LR(BM0) and SURROUND.LR(BM6).
   1017 			 * CENTER(BM4) and LFE(BM7) doesn't sound.
   1018 			 *
   1019 			 * 2ch: L,R,L,R,L,R,L,R,... => BM0: L,R,L,R,L,R,L,R,...
   1020 			 *                             BM6: (same of BM0)
   1021 			 *                             BM4: none
   1022 			 *                             BM7: none
   1023 			 */
   1024 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1025 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1026 			bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1027 			    PRDADDR(PRD_TABLE_FRONT, 0));
   1028 
   1029 			/* start DMA transfer */
   1030 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1031 			    ACC_BMx_CMD_WRITE |
   1032 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1033 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1034 			bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1035 			    ACC_BMx_CMD_WRITE |
   1036 			    ACC_BMx_CMD_BYTE_ORD_EL |
   1037 			    ACC_BMx_CMD_BM_CTL_ENABLE);
   1038 		}
   1039 		break;
   1040 	case 4:
   1041 		/*
   1042 		 * output 4ch PCM split to FRONT.LR(BM0) and SURROUND.LR(BM6).
   1043 		 * CENTER(BM4) and LFE(BM7) doesn't sound.
   1044 		 *
   1045 		 * rearrange ordered channel to continuous per channel
   1046 		 *
   1047 		 *   4ch: L,R,SL,SR,L,R,SL,SR,... => BM0: L,R,L,R,...
   1048 		 *                                   BM6: SL,SR,SL,SR,...
   1049 		 *                                   BM4: none
   1050 		 *                                   BM7: none
   1051 		 */
   1052 		if (sc->sc_mch_split_buf)
   1053 			gcscaudio_free(sc, sc->sc_mch_split_buf,
   1054 			    sc->sc_mch_split_size);
   1055 
   1056 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
   1057 		    size)) == NULL)
   1058 			return ENOMEM;
   1059 
   1060 		/*
   1061 		 * 1st and 2nd blocks are split immediately.
   1062 		 * Other blocks will be split synchronous with intr.
   1063 		 */
   1064 		split_buffer_4ch(sc->sc_mch_split_buf, start, blksize * 2,
   1065 		    blksize);
   1066 
   1067 		sc->sc_mch_split_start = start;
   1068 		sc->sc_mch_split_size = size;
   1069 		sc->sc_mch_split_blksize = blksize;
   1070 		sc->sc_mch_split_off = (blksize * 2) % size;
   1071 		sc->sc_mch_splitter = split_buffer_4ch;	/* split function */
   1072 
   1073 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
   1074 		    blksize / 2, 0))
   1075 			return EINVAL;
   1076 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1077 		    size, blksize, blksize / 2, 0))
   1078 			return EINVAL;
   1079 
   1080 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1081 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1082 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1083 		    PRDADDR(PRD_TABLE_SURR, 0));
   1084 
   1085 		/* start DMA transfer */
   1086 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_CMD,
   1087 		    ACC_BMx_CMD_WRITE |
   1088 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1089 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1090 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_CMD,
   1091 		    ACC_BMx_CMD_WRITE |
   1092 		    ACC_BMx_CMD_BYTE_ORD_EL |
   1093 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1094 		break;
   1095 	case 6:
   1096 		/*
   1097 		 * output 6ch PCM split to
   1098 		 * FRONT.LR(BM0), SURROUND.LR(BM6), CENTER(BM4) and LFE(BM7)
   1099 		 *
   1100 		 * rearrange ordered channel to continuous per channel
   1101 		 *
   1102 		 *   5.1ch: L,R,C,LFE,SL,SR,... => BM0: L,R,...
   1103 		 *                                 BM4: C,...
   1104 		 *                                 BM6: SL,SR,...
   1105 		 *                                 BM7: LFE,...
   1106 		 *
   1107 		 */
   1108 		if (sc->sc_mch_split_buf)
   1109 			gcscaudio_free(sc, sc->sc_mch_split_buf,
   1110 			    sc->sc_mch_split_size);
   1111 
   1112 		if ((sc->sc_mch_split_buf = gcscaudio_malloc(sc, AUMODE_PLAY,
   1113 		    size)) == NULL)
   1114 			return ENOMEM;
   1115 
   1116 		/*
   1117 		 * 1st and 2nd blocks are split immediately.
   1118 		 * Other block will be split synchronous with intr.
   1119 		 */
   1120 		split_buffer_6ch(sc->sc_mch_split_buf, start, blksize * 2,
   1121 		    blksize);
   1122 
   1123 		sc->sc_mch_split_start = start;
   1124 		sc->sc_mch_split_size = size;
   1125 		sc->sc_mch_split_blksize = blksize;
   1126 		sc->sc_mch_split_off = (blksize * 2) % size;
   1127 		sc->sc_mch_splitter = split_buffer_6ch;	/* split function */
   1128 
   1129 		if (build_prdtables(sc, PRD_TABLE_FRONT, start, size, blksize,
   1130 		    blksize / 3, 0))
   1131 			return EINVAL;
   1132 		if (build_prdtables(sc, PRD_TABLE_CENTER, sc->sc_mch_split_buf,
   1133 		    size, blksize, blksize / 3, blksize / 2))
   1134 			return EINVAL;
   1135 		if (build_prdtables(sc, PRD_TABLE_SURR, sc->sc_mch_split_buf,
   1136 		    size, blksize, blksize / 3, 0))
   1137 			return EINVAL;
   1138 		if (build_prdtables(sc, PRD_TABLE_LFE, sc->sc_mch_split_buf,
   1139 		    size, blksize, blksize / 3, blksize / 2 + blksize / 4))
   1140 			return EINVAL;
   1141 
   1142 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM0_PRD,
   1143 		    PRDADDR(PRD_TABLE_FRONT, 0));
   1144 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM4_PRD,
   1145 		    PRDADDR(PRD_TABLE_CENTER, 0));
   1146 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM6_PRD,
   1147 		    PRDADDR(PRD_TABLE_SURR, 0));
   1148 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM7_PRD,
   1149 		    PRDADDR(PRD_TABLE_LFE, 0));
   1150 
   1151 		/* start DMA transfer */
   1152 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_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_BM4_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_BM6_CMD,
   1159 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1160 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1161 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_CMD,
   1162 		    ACC_BMx_CMD_WRITE | ACC_BMx_CMD_BYTE_ORD_EL |
   1163 		    ACC_BMx_CMD_BM_CTL_ENABLE);
   1164 		break;
   1165 	}
   1166 
   1167 	return 0;
   1168 }
   1169 
   1170 static int
   1171 gcscaudio_trigger_input(void *addr, void *start, void *end, int blksize,
   1172                         void (*intr)(void *), void *arg,
   1173                         const audio_params_t *param)
   1174 {
   1175 	struct gcscaudio_softc *sc;
   1176 	size_t size;
   1177 
   1178 	sc = (struct gcscaudio_softc *)addr;
   1179 	sc->sc_rec.ch_intr = intr;
   1180 	sc->sc_rec.ch_intr_arg = arg;
   1181 	size = (char *)end - (char *)start;
   1182 
   1183 	if (build_prdtables(sc, PRD_TABLE_REC, start, size, blksize, blksize, 0))
   1184 		return EINVAL;
   1185 
   1186 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ACC_BM1_PRD,
   1187 	    PRDADDR(PRD_TABLE_REC, 0));
   1188 
   1189 	/* start transfer */
   1190 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_CMD,
   1191 	    ACC_BMx_CMD_READ |
   1192 	    ACC_BMx_CMD_BYTE_ORD_EL |
   1193 	    ACC_BMx_CMD_BM_CTL_ENABLE);
   1194 
   1195 	return 0;
   1196 }
   1197 
   1198 static void
   1199 gcscaudio_get_locks(void *arg, kmutex_t **intr, kmutex_t **thread)
   1200 {
   1201 	struct gcscaudio_softc *sc;
   1202 
   1203 	sc = (struct gcscaudio_softc *)arg;
   1204 
   1205 	*intr = &sc->sc_intr_lock;
   1206 	*thread = &sc->sc_lock;
   1207 }
   1208 
   1209 static int
   1210 gcscaudio_intr(void *arg)
   1211 {
   1212 	struct gcscaudio_softc *sc;
   1213 	uint16_t intr;
   1214 	uint8_t bmstat;
   1215 	int nintr;
   1216 
   1217 	nintr = 0;
   1218 	sc = (struct gcscaudio_softc *)arg;
   1219 
   1220 	mutex_spin_enter(&sc->sc_intr_lock);
   1221 
   1222 	intr = bus_space_read_2(sc->sc_iot, sc->sc_ioh, ACC_IRQ_STATUS);
   1223 	if (intr == 0)
   1224 		goto done;
   1225 
   1226 	/* Front output */
   1227 	if (intr & ACC_IRQ_STATUS_BM0_IRQ_STS) {
   1228 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM0_STATUS);
   1229 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1230 			aprint_normal_dev(sc->sc_dev, "BM0: Bus Master Error\n");
   1231 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1232 			aprint_normal_dev(sc->sc_dev, "BM0: NO End of Page?\n");
   1233 
   1234 		if (sc->sc_play.ch_intr) {
   1235 			sc->sc_play.ch_intr(sc->sc_play.ch_intr_arg);
   1236 			channel_splitter(sc);
   1237 		}
   1238 		nintr++;
   1239 	}
   1240 
   1241 	/* Center output */
   1242 	if (intr & ACC_IRQ_STATUS_BM4_IRQ_STS) {
   1243 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM4_STATUS);
   1244 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1245 			aprint_normal_dev(sc->sc_dev, "BM4: Bus Master Error\n");
   1246 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1247 			aprint_normal_dev(sc->sc_dev, "BM4: NO End of Page?\n");
   1248 
   1249 		nintr++;
   1250 	}
   1251 
   1252 	/* Surround output */
   1253 	if (intr & ACC_IRQ_STATUS_BM6_IRQ_STS) {
   1254 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM6_STATUS);
   1255 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1256 			aprint_normal_dev(sc->sc_dev, "BM6: Bus Master Error\n");
   1257 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1258 			aprint_normal_dev(sc->sc_dev, "BM6: NO End of Page?\n");
   1259 
   1260 		nintr++;
   1261 	}
   1262 
   1263 	/* LowFrequencyEffect output */
   1264 	if (intr & ACC_IRQ_STATUS_BM7_IRQ_STS) {
   1265 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM7_STATUS);
   1266 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1267 			aprint_normal_dev(sc->sc_dev, "BM7: Bus Master Error\n");
   1268 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1269 			aprint_normal_dev(sc->sc_dev, "BM7: NO End of Page?\n");
   1270 
   1271 		nintr++;
   1272 	}
   1273 
   1274 	/* record */
   1275 	if (intr & ACC_IRQ_STATUS_BM1_IRQ_STS) {
   1276 		bmstat = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ACC_BM1_STATUS);
   1277 		if (bmstat & ACC_BMx_STATUS_BM_EOP_ERR)
   1278 			aprint_normal_dev(sc->sc_dev, "BM1: Bus Master Error\n");
   1279 		if (!(bmstat & ACC_BMx_STATUS_EOP))
   1280 			aprint_normal_dev(sc->sc_dev, "BM1: NO End of Page?\n");
   1281 
   1282 		if (sc->sc_rec.ch_intr) {
   1283 			sc->sc_rec.ch_intr(sc->sc_rec.ch_intr_arg);
   1284 		}
   1285 		nintr++;
   1286 	}
   1287 
   1288 #ifdef GCSCAUDIO_DEBUG
   1289 	if (intr & ACC_IRQ_STATUS_IRQ_STS)
   1290 		aprint_normal_dev(sc->sc_dev, "Codec GPIO IRQ Status\n");
   1291 	if (intr & ACC_IRQ_STATUS_WU_IRQ_STS)
   1292 		aprint_normal_dev(sc->sc_dev, "Codec GPIO Wakeup IRQ Status\n");
   1293 	if (intr & ACC_IRQ_STATUS_BM2_IRQ_STS)
   1294 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 2 IRQ Status\n");
   1295 	if (intr & ACC_IRQ_STATUS_BM3_IRQ_STS)
   1296 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 3 IRQ Status\n");
   1297 	if (intr & ACC_IRQ_STATUS_BM5_IRQ_STS)
   1298 		aprint_normal_dev(sc->sc_dev, "Audio Bus Master 5 IRQ Status\n");
   1299 #endif
   1300 
   1301 done:
   1302 	mutex_spin_exit(&sc->sc_intr_lock);
   1303 
   1304 	return nintr ? 1 : 0;
   1305 }
   1306 
   1307 static bool
   1308 gcscaudio_resume(device_t dv, const pmf_qual_t *qual)
   1309 {
   1310 	struct gcscaudio_softc *sc = device_private(dv);
   1311 
   1312 	gcscaudio_reset_codec(sc);
   1313 	DELAY(1000);
   1314 	(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
   1315 
   1316 	return true;
   1317 }
   1318 
   1319 static int
   1320 gcscaudio_allocate_dma(struct gcscaudio_softc *sc, size_t size, void **addrp,
   1321                        bus_dma_segment_t *seglist, int nseg, int *rsegp,
   1322                        bus_dmamap_t *mapp)
   1323 {
   1324 	int error;
   1325 
   1326 	if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, seglist,
   1327 	    nseg, rsegp, BUS_DMA_WAITOK)) != 0) {
   1328 		aprint_error_dev(sc->sc_dev,
   1329 		    "unable to allocate DMA buffer, error=%d\n", error);
   1330 		goto fail_alloc;
   1331 	}
   1332 
   1333 	if ((error = bus_dmamem_map(sc->sc_dmat, seglist, nseg, size, addrp,
   1334 	    BUS_DMA_WAITOK | BUS_DMA_COHERENT)) != 0) {
   1335 		aprint_error_dev(sc->sc_dev,
   1336 		    "unable to map DMA buffer, error=%d\n",
   1337 		    error);
   1338 		goto fail_map;
   1339 	}
   1340 
   1341 	if ((error = bus_dmamap_create(sc->sc_dmat, size, nseg, size, 0,
   1342 	    BUS_DMA_WAITOK, mapp)) != 0) {
   1343 		aprint_error_dev(sc->sc_dev,
   1344 		    "unable to create DMA map, error=%d\n", error);
   1345 		goto fail_create;
   1346 	}
   1347 
   1348 	if ((error = bus_dmamap_load(sc->sc_dmat, *mapp, *addrp, size, NULL,
   1349 	    BUS_DMA_WAITOK)) != 0) {
   1350 		aprint_error_dev(sc->sc_dev,
   1351 		    "unable to load DMA map, error=%d\n", error);
   1352 		goto fail_load;
   1353 	}
   1354 
   1355 	return 0;
   1356 
   1357 fail_load:
   1358 	bus_dmamap_destroy(sc->sc_dmat, *mapp);
   1359 fail_create:
   1360 	bus_dmamem_unmap(sc->sc_dmat, *addrp, size);
   1361 fail_map:
   1362 	bus_dmamem_free(sc->sc_dmat, seglist, nseg);
   1363 fail_alloc:
   1364 	return error;
   1365 }
   1366