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auich.c revision 1.3.4.2
      1 /*	$NetBSD: auich.c,v 1.3.4.2 2002/02/11 20:09:55 jdolecek Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Copyright (c) 2000 Michael Shalayeff
     41  * All rights reserved.
     42  *
     43  * Redistribution and use in source and binary forms, with or without
     44  * modification, are permitted provided that the following conditions
     45  * are met:
     46  * 1. Redistributions of source code must retain the above copyright
     47  *    notice, this list of conditions and the following disclaimer.
     48  * 2. Redistributions in binary form must reproduce the above copyright
     49  *    notice, this list of conditions and the following disclaimer in the
     50  *    documentation and/or other materials provided with the distribution.
     51  * 3. The name of the author may not be used to endorse or promote products
     52  *    derived from this software without specific prior written permission.
     53  *
     54  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     55  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     56  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     57  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
     58  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     59  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     60  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     62  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     63  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     64  * THE POSSIBILITY OF SUCH DAMAGE.
     65  *
     66  *	from OpenBSD: ich.c,v 1.3 2000/08/11 06:17:18 mickey Exp
     67  */
     68 
     69 /* #define	ICH_DEBUG */
     70 /*
     71  * AC'97 audio found on Intel 810/820/440MX chipsets.
     72  *	http://developer.intel.com/design/chipsets/datashts/290655.htm
     73  *	http://developer.intel.com/design/chipsets/manuals/298028.htm
     74  *
     75  * TODO:
     76  *
     77  *	- Probe codecs for supported sample rates.
     78  *
     79  *	- Add support for the microphone input.
     80  */
     81 
     82 #include <sys/cdefs.h>
     83 __KERNEL_RCSID(0, "$NetBSD: auich.c,v 1.3.4.2 2002/02/11 20:09:55 jdolecek Exp $");
     84 
     85 #include <sys/param.h>
     86 #include <sys/systm.h>
     87 #include <sys/kernel.h>
     88 #include <sys/malloc.h>
     89 #include <sys/device.h>
     90 #include <sys/fcntl.h>
     91 #include <sys/proc.h>
     92 
     93 #include <uvm/uvm_extern.h>	/* for PAGE_SIZE */
     94 
     95 #include <dev/pci/pcidevs.h>
     96 #include <dev/pci/pcivar.h>
     97 #include <dev/pci/auichreg.h>
     98 
     99 #include <sys/audioio.h>
    100 #include <dev/audio_if.h>
    101 #include <dev/mulaw.h>
    102 #include <dev/auconv.h>
    103 
    104 #include <machine/bus.h>
    105 
    106 #include <dev/ic/ac97reg.h>
    107 #include <dev/ic/ac97var.h>
    108 
    109 struct auich_dma {
    110 	bus_dmamap_t map;
    111 	caddr_t addr;
    112 	bus_dma_segment_t segs[1];
    113 	int nsegs;
    114 	size_t size;
    115 	struct auich_dma *next;
    116 };
    117 
    118 #define	DMAADDR(p)	((p)->map->dm_segs[0].ds_addr)
    119 #define	KERNADDR(p)	((void *)((p)->addr))
    120 
    121 struct auich_cdata {
    122 	struct auich_dmalist ic_dmalist_pcmo[ICH_DMALIST_MAX];
    123 	struct auich_dmalist ic_dmalist_pcmi[ICH_DMALIST_MAX];
    124 	struct auich_dmalist ic_dmalist_mici[ICH_DMALIST_MAX];
    125 };
    126 
    127 #define	ICH_CDOFF(x)		offsetof(struct auich_cdata, x)
    128 #define	ICH_PCMO_OFF(x)		ICH_CDOFF(ic_dmalist_pcmo[(x)])
    129 #define	ICH_PCMI_OFF(x)		ICH_CDOFF(ic_dmalist_pcmi[(x)])
    130 #define	ICH_MICI_OFF(x)		ICH_CDOFF(ic_dmalist_mici[(x)])
    131 
    132 struct auich_softc {
    133 	struct device sc_dev;
    134 	void *sc_ih;
    135 
    136 	audio_device_t sc_audev;
    137 
    138 	bus_space_tag_t iot;
    139 	bus_space_handle_t mix_ioh;
    140 	bus_space_handle_t aud_ioh;
    141 	bus_dma_tag_t dmat;
    142 
    143 	struct ac97_codec_if *codec_if;
    144 	struct ac97_host_if host_if;
    145 
    146 	/* DMA scatter-gather lists. */
    147 	bus_dmamap_t sc_cddmamap;
    148 #define	sc_cddma	sc_cddmamap->dm_segs[0].ds_addr
    149 
    150 	struct auich_cdata *sc_cdata;
    151 #define	dmalist_pcmo	sc_cdata->ic_dmalist_pcmo
    152 #define	dmalist_pcmi	sc_cdata->ic_dmalist_pcmi
    153 #define	dmalist_mici	sc_cdata->ic_dmalist_mici
    154 
    155 	int	ptr_pcmo,
    156 		ptr_pcmi,
    157 		ptr_mici;
    158 
    159 	/* i/o buffer pointers */
    160 	u_int32_t pcmo_start, pcmo_p, pcmo_end;
    161 	int pcmo_blksize, pcmo_fifoe;
    162 
    163 	u_int32_t pcmi_start, pcmi_p, pcmi_end;
    164 	int pcmi_blksize, pcmi_fifoe;
    165 
    166 	u_int32_t mici_start, mici_p, mici_end;
    167 	int mici_blksize, mici_fifoe;
    168 
    169 	struct auich_dma *sc_dmas;
    170 
    171 	int  sc_fixed_rate;
    172 
    173 	void (*sc_pintr)(void *);
    174 	void *sc_parg;
    175 
    176 	void (*sc_rintr)(void *);
    177 	void *sc_rarg;
    178 
    179 	/* Power Management */
    180 	void *sc_powerhook;
    181 	int sc_suspend;
    182 	u_int16_t ext_status;
    183 };
    184 
    185 /* Debug */
    186 #ifdef AUDIO_DEBUG
    187 #define	DPRINTF(l,x)	do { if (auich_debug & (l)) printf x; } while(0)
    188 int auich_debug = 0xfffe;
    189 #define	ICH_DEBUG_CODECIO	0x0001
    190 #define	ICH_DEBUG_DMA		0x0002
    191 #define	ICH_DEBUG_PARAM		0x0004
    192 #else
    193 #define	DPRINTF(x,y)	/* nothing */
    194 #endif
    195 
    196 int	auich_match(struct device *, struct cfdata *, void *);
    197 void	auich_attach(struct device *, struct device *, void *);
    198 int	auich_intr(void *);
    199 
    200 struct cfattach auich_ca = {
    201 	sizeof(struct auich_softc), auich_match, auich_attach
    202 };
    203 
    204 int	auich_open(void *, int);
    205 void	auich_close(void *);
    206 int	auich_query_encoding(void *, struct audio_encoding *);
    207 int	auich_set_params(void *, int, int, struct audio_params *,
    208 	    struct audio_params *);
    209 int	auich_round_blocksize(void *, int);
    210 int	auich_halt_output(void *);
    211 int	auich_halt_input(void *);
    212 int	auich_getdev(void *, struct audio_device *);
    213 int	auich_set_port(void *, mixer_ctrl_t *);
    214 int	auich_get_port(void *, mixer_ctrl_t *);
    215 int	auich_query_devinfo(void *, mixer_devinfo_t *);
    216 void	*auich_allocm(void *, int, size_t, int, int);
    217 void	auich_freem(void *, void *, int);
    218 size_t	auich_round_buffersize(void *, int, size_t);
    219 paddr_t	auich_mappage(void *, void *, off_t, int);
    220 int	auich_get_props(void *);
    221 int	auich_trigger_output(void *, void *, void *, int, void (*)(void *),
    222 	    void *, struct audio_params *);
    223 int	auich_trigger_input(void *, void *, void *, int, void (*)(void *),
    224 	    void *, struct audio_params *);
    225 
    226 int	auich_alloc_cdata(struct auich_softc *);
    227 
    228 int	auich_allocmem(struct auich_softc *, size_t, size_t,
    229 	    struct auich_dma *);
    230 int	auich_freemem(struct auich_softc *, struct auich_dma *);
    231 
    232 void	auich_powerhook(int, void *);
    233 
    234 struct audio_hw_if auich_hw_if = {
    235 	auich_open,
    236 	auich_close,
    237 	NULL,			/* drain */
    238 	auich_query_encoding,
    239 	auich_set_params,
    240 	auich_round_blocksize,
    241 	NULL,			/* commit_setting */
    242 	NULL,			/* init_output */
    243 	NULL,			/* init_input */
    244 	NULL,			/* start_output */
    245 	NULL,			/* start_input */
    246 	auich_halt_output,
    247 	auich_halt_input,
    248 	NULL,			/* speaker_ctl */
    249 	auich_getdev,
    250 	NULL,			/* getfd */
    251 	auich_set_port,
    252 	auich_get_port,
    253 	auich_query_devinfo,
    254 	auich_allocm,
    255 	auich_freem,
    256 	auich_round_buffersize,
    257 	auich_mappage,
    258 	auich_get_props,
    259 	auich_trigger_output,
    260 	auich_trigger_input,
    261 	NULL,			/* dev_ioctl */
    262 };
    263 
    264 int	auich_attach_codec(void *, struct ac97_codec_if *);
    265 int	auich_read_codec(void *, u_int8_t, u_int16_t *);
    266 int	auich_write_codec(void *, u_int8_t, u_int16_t);
    267 void	auich_reset_codec(void *);
    268 
    269 static const struct auich_devtype {
    270 	int	product;
    271 	const char *name;
    272 	const char *shortname;
    273 } auich_devices[] = {
    274 	{ PCI_PRODUCT_INTEL_82801AA_ACA,
    275 	    "i82801AA (ICH) AC-97 Audio",	"ICH" },
    276 	{ PCI_PRODUCT_INTEL_82801AB_ACA,
    277 	    "i82801AB (ICH0) AC-97 Audio",	"ICH0" },
    278 	{ PCI_PRODUCT_INTEL_82801BA_ACA,
    279 	    "i82801BA (ICH2) AC-97 Audio",	"ICH2" },
    280 	{ PCI_PRODUCT_INTEL_82440MX_ACA,
    281 	    "i82440MX AC-97 Audio",		"440MX" },
    282 	{ PCI_PRODUCT_INTEL_82801CA_AC,
    283 	    "i82801CA AC-97 Audio",		"i830M" },
    284 
    285 	{ 0,
    286 	    NULL,			NULL },
    287 };
    288 
    289 static const struct auich_devtype *
    290 auich_lookup(struct pci_attach_args *pa)
    291 {
    292 	const struct auich_devtype *d;
    293 
    294 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL)
    295 		return (NULL);
    296 
    297 	for (d = auich_devices; d->name != NULL; d++) {
    298 		if (PCI_PRODUCT(pa->pa_id) == d->product)
    299 			return (d);
    300 	}
    301 
    302 	return (NULL);
    303 }
    304 
    305 int
    306 auich_match(struct device *parent, struct cfdata *match, void *aux)
    307 {
    308 	struct pci_attach_args *pa = aux;
    309 
    310 	if (auich_lookup(pa) != NULL)
    311 		return (1);
    312 
    313 	return (0);
    314 }
    315 
    316 void
    317 auich_attach(struct device *parent, struct device *self, void *aux)
    318 {
    319 	struct auich_softc *sc = (struct auich_softc *)self;
    320 	struct pci_attach_args *pa = aux;
    321 	pci_intr_handle_t ih;
    322 	bus_size_t mix_size, aud_size;
    323 	pcireg_t csr;
    324 	const char *intrstr;
    325 	const struct auich_devtype *d;
    326 	u_int16_t ext_id, ext_status;
    327 
    328 	d = auich_lookup(pa);
    329 	if (d == NULL)
    330 		panic("auich_attach: impossible");
    331 
    332 	printf(": %s\n", d->name);
    333 
    334 	if (pci_mapreg_map(pa, ICH_NAMBAR, PCI_MAPREG_TYPE_IO, 0,
    335 			   &sc->iot, &sc->mix_ioh, NULL, &mix_size)) {
    336 		printf("%s: can't map codec i/o space\n",
    337 		    sc->sc_dev.dv_xname);
    338 		return;
    339 	}
    340 	if (pci_mapreg_map(pa, ICH_NABMBAR, PCI_MAPREG_TYPE_IO, 0,
    341 			   &sc->iot, &sc->aud_ioh, NULL, &aud_size)) {
    342 		printf("%s: can't map device i/o space\n",
    343 		    sc->sc_dev.dv_xname);
    344 		return;
    345 	}
    346 	sc->dmat = pa->pa_dmat;
    347 
    348 	/* enable bus mastering */
    349 	csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
    350 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
    351 	    csr | PCI_COMMAND_MASTER_ENABLE);
    352 
    353 	/* Map and establish the interrupt. */
    354 	if (pci_intr_map(pa, &ih)) {
    355 		printf("%s: can't map interrupt\n", sc->sc_dev.dv_xname);
    356 		return;
    357 	}
    358 	intrstr = pci_intr_string(pa->pa_pc, ih);
    359 	sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_AUDIO,
    360 	    auich_intr, sc);
    361 	if (sc->sc_ih == NULL) {
    362 		printf("%s: can't establish interrupt", sc->sc_dev.dv_xname);
    363 		if (intrstr != NULL)
    364 			printf(" at %s", intrstr);
    365 		printf("\n");
    366 		return;
    367 	}
    368 	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
    369 
    370 	sprintf(sc->sc_audev.name, "%s AC97", d->shortname);
    371 	sprintf(sc->sc_audev.version, "0x%02x", PCI_REVISION(pa->pa_class));
    372 	strcpy(sc->sc_audev.config, sc->sc_dev.dv_xname);
    373 
    374 	/* Set up DMA lists. */
    375 	sc->ptr_pcmo = sc->ptr_pcmi = sc->ptr_mici = 0;
    376 	auich_alloc_cdata(sc);
    377 
    378 	DPRINTF(ICH_DEBUG_DMA, ("auich_attach: lists %p %p %p\n",
    379 	    sc->dmalist_pcmo, sc->dmalist_pcmi, sc->dmalist_mici));
    380 
    381 	/* Reset codec and AC'97 */
    382 	auich_reset_codec(sc);
    383 
    384 	sc->host_if.arg = sc;
    385 	sc->host_if.attach = auich_attach_codec;
    386 	sc->host_if.read = auich_read_codec;
    387 	sc->host_if.write = auich_write_codec;
    388 	sc->host_if.reset = auich_reset_codec;
    389 
    390 	if (ac97_attach(&sc->host_if) != 0)
    391 		return;
    392 
    393 	auich_read_codec(sc, AC97_REG_EXTENDED_ID, &ext_id);
    394         if ((ext_id & (AC97_CODEC_DOES_VRA | AC97_CODEC_DOES_MICVRA)) != 0) {
    395 		auich_read_codec(sc, AC97_REG_EXTENDED_STATUS, &ext_status);
    396         	if ((ext_id & AC97_CODEC_DOES_VRA) !=0)
    397                 	ext_status |= AC97_ENAB_VRA;
    398         	if ((ext_id & AC97_CODEC_DOES_MICVRA) !=0)
    399                 	ext_status |= AC97_ENAB_MICVRA;
    400         	auich_write_codec(sc, AC97_REG_EXTENDED_STATUS, ext_status);
    401 		sc->sc_fixed_rate = 0;
    402 	} else {
    403 		sc->sc_fixed_rate = 48000;
    404 	}
    405 
    406 	audio_attach_mi(&auich_hw_if, sc, &sc->sc_dev);
    407 
    408 	/* Watch for power change */
    409 	sc->sc_suspend = PWR_RESUME;
    410 	sc->sc_powerhook = powerhook_establish(auich_powerhook, sc);
    411 }
    412 
    413 int
    414 auich_read_codec(void *v, u_int8_t reg, u_int16_t *val)
    415 {
    416 	struct auich_softc *sc = v;
    417 	int i;
    418 
    419 	/* wait for an access semaphore */
    420 	for (i = ICH_SEMATIMO; i-- &&
    421 	    bus_space_read_1(sc->iot, sc->aud_ioh, ICH_CAS) & 1; DELAY(1));
    422 
    423 	if (i > 0) {
    424 		*val = bus_space_read_2(sc->iot, sc->mix_ioh, reg);
    425 		DPRINTF(ICH_DEBUG_CODECIO,
    426 		    ("auich_read_codec(%x, %x)\n", reg, *val));
    427 
    428 		return 0;
    429 	} else {
    430 		DPRINTF(ICH_DEBUG_CODECIO,
    431 		    ("%s: read_codec timeout\n", sc->sc_dev.dv_xname));
    432 		return -1;
    433 	}
    434 }
    435 
    436 int
    437 auich_write_codec(void *v, u_int8_t reg, u_int16_t val)
    438 {
    439 	struct auich_softc *sc = v;
    440 	int i;
    441 
    442 	DPRINTF(ICH_DEBUG_CODECIO, ("auich_write_codec(%x, %x)\n", reg, val));
    443 
    444 	/* wait for an access semaphore */
    445 	for (i = ICH_SEMATIMO; i-- &&
    446 	    bus_space_read_1(sc->iot, sc->aud_ioh, ICH_CAS) & 1; DELAY(1));
    447 
    448 	if (i > 0) {
    449 		bus_space_write_2(sc->iot, sc->mix_ioh, reg, val);
    450 		return 0;
    451 	} else {
    452 		DPRINTF(ICH_DEBUG_CODECIO,
    453 		    ("%s: write_codec timeout\n", sc->sc_dev.dv_xname));
    454 		return -1;
    455 	}
    456 }
    457 
    458 int
    459 auich_attach_codec(void *v, struct ac97_codec_if *cif)
    460 {
    461 	struct auich_softc *sc = v;
    462 
    463 	sc->codec_if = cif;
    464 	return 0;
    465 }
    466 
    467 void
    468 auich_reset_codec(void *v)
    469 {
    470 	struct auich_softc *sc = v;
    471 
    472 	bus_space_write_4(sc->iot, sc->aud_ioh, ICH_GCTRL, 0);
    473 	DELAY(10);
    474 	bus_space_write_4(sc->iot, sc->aud_ioh, ICH_GCTRL, ICH_CRESET);
    475 }
    476 
    477 int
    478 auich_open(void *v, int flags)
    479 {
    480 
    481 	return 0;
    482 }
    483 
    484 void
    485 auich_close(void *v)
    486 {
    487 	struct auich_softc *sc = v;
    488 
    489 	auich_halt_output(sc);
    490 	auich_halt_input(sc);
    491 
    492 	sc->sc_pintr = NULL;
    493 	sc->sc_rintr = NULL;
    494 }
    495 
    496 int
    497 auich_query_encoding(void *v, struct audio_encoding *aep)
    498 {
    499 
    500 #if 0 /* XXX Not until we emulate it. */
    501 	switch (aep->index) {
    502 	case 0:
    503 		strcpy(aep->name, AudioEulinear);
    504 		aep->encoding = AUDIO_ENCODING_ULINEAR;
    505 		aep->precision = 8;
    506 		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
    507 		return (0);
    508 #else
    509 	switch (aep->index + 1) {
    510 #endif
    511 	case 1:
    512 		strcpy(aep->name, AudioEmulaw);
    513 		aep->encoding = AUDIO_ENCODING_ULAW;
    514 		aep->precision = 8;
    515 		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
    516 		return (0);
    517 	case 2:
    518 		strcpy(aep->name, AudioEalaw);
    519 		aep->encoding = AUDIO_ENCODING_ALAW;
    520 		aep->precision = 8;
    521 		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
    522 		return (0);
    523 	case 3:
    524 		strcpy(aep->name, AudioEslinear);
    525 		aep->encoding = AUDIO_ENCODING_SLINEAR;
    526 		aep->precision = 8;
    527 		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
    528 		return (0);
    529 	case 4:
    530 		strcpy(aep->name, AudioEslinear_le);
    531 		aep->encoding = AUDIO_ENCODING_SLINEAR_LE;
    532 		aep->precision = 16;
    533 		aep->flags = 0;
    534 		return (0);
    535 	case 5:
    536 		strcpy(aep->name, AudioEulinear_le);
    537 		aep->encoding = AUDIO_ENCODING_ULINEAR_LE;
    538 		aep->precision = 16;
    539 		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
    540 		return (0);
    541 	case 6:
    542 		strcpy(aep->name, AudioEslinear_be);
    543 		aep->encoding = AUDIO_ENCODING_SLINEAR_BE;
    544 		aep->precision = 16;
    545 		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
    546 		return (0);
    547 	case 7:
    548 		strcpy(aep->name, AudioEulinear_be);
    549 		aep->encoding = AUDIO_ENCODING_ULINEAR_BE;
    550 		aep->precision = 16;
    551 		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
    552 		return (0);
    553 	default:
    554 		return (EINVAL);
    555 	}
    556 }
    557 
    558 int
    559 auich_set_params(void *v, int setmode, int usemode, struct audio_params *play,
    560     struct audio_params *rec)
    561 {
    562 	struct auich_softc *sc = v;
    563 	struct audio_params *p;
    564 	int mode;
    565 	u_int16_t val, rate, inout;
    566 
    567 	for (mode = AUMODE_RECORD; mode != -1;
    568 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
    569 		if ((setmode & mode) == 0)
    570 			continue;
    571 
    572 		p = mode == AUMODE_PLAY ? play : rec;
    573 		if (p == NULL)
    574 			continue;
    575 
    576 		inout = mode == AUMODE_PLAY ? ICH_PM_PCMO : ICH_PM_PCMI;
    577 
    578 		if ((p->sample_rate !=  8000) &&
    579 		    (p->sample_rate != 11025) &&
    580 		    (p->sample_rate != 16000) &&
    581 		    (p->sample_rate != 22050) &&
    582 		    (p->sample_rate != 32000) &&
    583 		    (p->sample_rate != 44100) &&
    584 		    (p->sample_rate != 48000))
    585 			return (EINVAL);
    586 
    587 		p->factor = 1;
    588 		p->sw_code = NULL;
    589 		switch (p->encoding) {
    590 		case AUDIO_ENCODING_SLINEAR_BE:
    591 			if (p->precision == 16)
    592 				p->sw_code = swap_bytes;
    593 			else {
    594 				if (mode == AUMODE_PLAY)
    595 					p->sw_code = linear8_to_linear16_le;
    596 				else
    597 					p->sw_code = linear16_to_linear8_le;
    598 			}
    599 			break;
    600 
    601 		case AUDIO_ENCODING_SLINEAR_LE:
    602 			if (p->precision != 16) {
    603 				if (mode == AUMODE_PLAY)
    604 					p->sw_code = linear8_to_linear16_le;
    605 				else
    606 					p->sw_code = linear16_to_linear8_le;
    607 			}
    608 			break;
    609 
    610 		case AUDIO_ENCODING_ULINEAR_BE:
    611 			if (p->precision == 16) {
    612 				if (mode == AUMODE_PLAY)
    613 					p->sw_code =
    614 					    swap_bytes_change_sign16_le;
    615 				else
    616 					p->sw_code =
    617 					    change_sign16_swap_bytes_le;
    618 			} else {
    619 				/*
    620 				 * XXX ulinear8_to_slinear16_le
    621 				 */
    622 				return (EINVAL);
    623 			}
    624 			break;
    625 
    626 		case AUDIO_ENCODING_ULINEAR_LE:
    627 			if (p->precision == 16)
    628 				p->sw_code = change_sign16_le;
    629 			else {
    630 				/*
    631 				 * XXX ulinear8_to_slinear16_le
    632 				 */
    633 				return (EINVAL);
    634 			}
    635 			break;
    636 
    637 		case AUDIO_ENCODING_ULAW:
    638 			if (mode == AUMODE_PLAY) {
    639 				p->factor = 2;
    640 				p->sw_code = mulaw_to_slinear16_le;
    641 			} else {
    642 				/*
    643 				 * XXX slinear16_le_to_mulaw
    644 				 */
    645 				return (EINVAL);
    646 			}
    647 			break;
    648 
    649 		case AUDIO_ENCODING_ALAW:
    650 			if (mode == AUMODE_PLAY) {
    651 				p->factor = 2;
    652 				p->sw_code = alaw_to_slinear16_le;
    653 			} else {
    654 				/*
    655 				 * XXX slinear16_le_to_alaw
    656 				 */
    657 				return (EINVAL);
    658 			}
    659 			break;
    660 
    661 		default:
    662 			return (EINVAL);
    663 		}
    664 
    665 		auich_read_codec(sc, AC97_REG_POWER, &val);
    666 		auich_write_codec(sc, AC97_REG_POWER, val | inout);
    667 
    668 		auich_write_codec(sc, AC97_REG_PCM_FRONT_DAC_RATE,
    669 		    sc->sc_fixed_rate ? sc->sc_fixed_rate : p->sample_rate);
    670 		auich_read_codec(sc, AC97_REG_PCM_FRONT_DAC_RATE, &rate);
    671 		p->sample_rate = rate;
    672 
    673 		auich_write_codec(sc, AC97_REG_POWER, val);
    674 	}
    675 
    676 	return (0);
    677 }
    678 
    679 int
    680 auich_round_blocksize(void *v, int blk)
    681 {
    682 
    683 	return (blk & ~0x3f);		/* keep good alignment */
    684 }
    685 
    686 int
    687 auich_halt_output(void *v)
    688 {
    689 	struct auich_softc *sc = v;
    690 
    691 	DPRINTF(ICH_DEBUG_DMA, ("%s: halt_output\n", sc->sc_dev.dv_xname));
    692 
    693 	bus_space_write_1(sc->iot, sc->aud_ioh, ICH_PCMO + ICH_CTRL, ICH_RR);
    694 
    695 	return (0);
    696 }
    697 
    698 int
    699 auich_halt_input(void *v)
    700 {
    701 	struct auich_softc *sc = v;
    702 
    703 	DPRINTF(ICH_DEBUG_DMA,
    704 	    ("%s: halt_input\n", sc->sc_dev.dv_xname));
    705 
    706 	/* XXX halt both unless known otherwise */
    707 
    708 	bus_space_write_1(sc->iot, sc->aud_ioh, ICH_PCMI + ICH_CTRL, ICH_RR);
    709 	bus_space_write_1(sc->iot, sc->aud_ioh, ICH_MICI + ICH_CTRL, ICH_RR);
    710 
    711 	return (0);
    712 }
    713 
    714 int
    715 auich_getdev(void *v, struct audio_device *adp)
    716 {
    717 	struct auich_softc *sc = v;
    718 
    719 	*adp = sc->sc_audev;
    720 	return (0);
    721 }
    722 
    723 int
    724 auich_set_port(void *v, mixer_ctrl_t *cp)
    725 {
    726 	struct auich_softc *sc = v;
    727 
    728 	return (sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp));
    729 }
    730 
    731 int
    732 auich_get_port(void *v, mixer_ctrl_t *cp)
    733 {
    734 	struct auich_softc *sc = v;
    735 
    736 	return (sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp));
    737 }
    738 
    739 int
    740 auich_query_devinfo(void *v, mixer_devinfo_t *dp)
    741 {
    742 	struct auich_softc *sc = v;
    743 
    744 	return (sc->codec_if->vtbl->query_devinfo(sc->codec_if, dp));
    745 }
    746 
    747 void *
    748 auich_allocm(void *v, int direction, size_t size, int pool, int flags)
    749 {
    750 	struct auich_softc *sc = v;
    751 	struct auich_dma *p;
    752 	int error;
    753 
    754 	if (size > (ICH_DMALIST_MAX * ICH_DMASEG_MAX))
    755 		return (NULL);
    756 
    757 	p = malloc(sizeof(*p), pool, flags|M_ZERO);
    758 	if (p == NULL)
    759 		return (NULL);
    760 
    761 	error = auich_allocmem(sc, size, 0, p);
    762 	if (error) {
    763 		free(p, pool);
    764 		return (NULL);
    765 	}
    766 
    767 	p->next = sc->sc_dmas;
    768 	sc->sc_dmas = p;
    769 
    770 	return (KERNADDR(p));
    771 }
    772 
    773 void
    774 auich_freem(void *v, void *ptr, int pool)
    775 {
    776 	struct auich_softc *sc = v;
    777 	struct auich_dma *p, **pp;
    778 
    779 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->next) {
    780 		if (KERNADDR(p) == ptr) {
    781 			auich_freemem(sc, p);
    782 			*pp = p->next;
    783 			free(p, pool);
    784 			return;
    785 		}
    786 	}
    787 }
    788 
    789 size_t
    790 auich_round_buffersize(void *v, int direction, size_t size)
    791 {
    792 
    793 	if (size > (ICH_DMALIST_MAX * ICH_DMASEG_MAX))
    794 		size = ICH_DMALIST_MAX * ICH_DMASEG_MAX;
    795 
    796 	return size;
    797 }
    798 
    799 paddr_t
    800 auich_mappage(void *v, void *mem, off_t off, int prot)
    801 {
    802 	struct auich_softc *sc = v;
    803 	struct auich_dma *p;
    804 
    805 	if (off < 0)
    806 		return (-1);
    807 
    808 	for (p = sc->sc_dmas; p && KERNADDR(p) != mem; p = p->next)
    809 		;
    810 	if (!p)
    811 		return (-1);
    812 	return (bus_dmamem_mmap(sc->dmat, p->segs, p->nsegs,
    813 	    off, prot, BUS_DMA_WAITOK));
    814 }
    815 
    816 int
    817 auich_get_props(void *v)
    818 {
    819 
    820 	return (AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT |
    821 		AUDIO_PROP_FULLDUPLEX);
    822 }
    823 
    824 int
    825 auich_intr(void *v)
    826 {
    827 	struct auich_softc *sc = v;
    828 	int ret = 0, sts, gsts, i, qptr;
    829 
    830 	gsts = bus_space_read_2(sc->iot, sc->aud_ioh, ICH_GSTS);
    831 	DPRINTF(ICH_DEBUG_DMA, ("auich_intr: gsts=0x%x\n", gsts));
    832 
    833 	if (gsts & ICH_POINT) {
    834 		sts = bus_space_read_2(sc->iot, sc->aud_ioh, ICH_PCMO+ICH_STS);
    835 		DPRINTF(ICH_DEBUG_DMA,
    836 		    ("auich_intr: osts=0x%x\n", sts));
    837 
    838 		if (sts & ICH_FIFOE) {
    839 			printf("%s: fifo underrun # %u\n",
    840 			    sc->sc_dev.dv_xname, ++sc->pcmo_fifoe);
    841 		}
    842 
    843 		i = bus_space_read_1(sc->iot, sc->aud_ioh, ICH_PCMO + ICH_CIV);
    844 		if (sts & (ICH_LVBCI | ICH_CELV)) {
    845 			struct auich_dmalist *q;
    846 
    847 			qptr = sc->ptr_pcmo;
    848 
    849 			while (qptr != i) {
    850 				q = &sc->dmalist_pcmo[qptr];
    851 
    852 				q->base = sc->pcmo_p;
    853 				q->len = (sc->pcmo_blksize / 2) | ICH_DMAF_IOC;
    854 				DPRINTF(ICH_DEBUG_DMA,
    855 				    ("auich_intr: %p, %p = %x @ 0x%x\n",
    856 				    &sc->dmalist_pcmo[i], q,
    857 				    sc->pcmo_blksize / 2, sc->pcmo_p));
    858 
    859 				sc->pcmo_p += sc->pcmo_blksize;
    860 				if (sc->pcmo_p >= sc->pcmo_end)
    861 					sc->pcmo_p = sc->pcmo_start;
    862 
    863 				if (++qptr == ICH_DMALIST_MAX)
    864 					qptr = 0;
    865 			}
    866 
    867 			sc->ptr_pcmo = qptr;
    868 			bus_space_write_1(sc->iot, sc->aud_ioh,
    869 			    ICH_PCMO + ICH_LVI,
    870 			    (sc->ptr_pcmo - 1) & ICH_LVI_MASK);
    871 		}
    872 
    873 		if (sts & ICH_BCIS && sc->sc_pintr)
    874 			sc->sc_pintr(sc->sc_parg);
    875 
    876 		/* int ack */
    877 		bus_space_write_2(sc->iot, sc->aud_ioh, ICH_PCMO + ICH_STS,
    878 		    sts & (ICH_LVBCI | ICH_CELV | ICH_BCIS | ICH_FIFOE));
    879 		bus_space_write_2(sc->iot, sc->aud_ioh, ICH_GSTS, ICH_POINT);
    880 		ret++;
    881 	}
    882 
    883 	if (gsts & ICH_PIINT) {
    884 		sts = bus_space_read_2(sc->iot, sc->aud_ioh, ICH_PCMI+ICH_STS);
    885 		DPRINTF(ICH_DEBUG_DMA,
    886 		    ("auich_intr: ists=0x%x\n", sts));
    887 
    888 		if (sts & ICH_FIFOE) {
    889 			printf("%s: fifo overrun # %u\n",
    890 			    sc->sc_dev.dv_xname, ++sc->pcmi_fifoe);
    891 		}
    892 
    893 		i = bus_space_read_1(sc->iot, sc->aud_ioh, ICH_PCMI + ICH_CIV);
    894 		if (sts & (ICH_LVBCI | ICH_CELV)) {
    895 			struct auich_dmalist *q;
    896 
    897 			qptr = sc->ptr_pcmi;
    898 
    899 			while (qptr != i) {
    900 				q = &sc->dmalist_pcmi[qptr];
    901 
    902 				q->base = sc->pcmi_p;
    903 				q->len = (sc->pcmi_blksize / 2) | ICH_DMAF_IOC;
    904 				DPRINTF(ICH_DEBUG_DMA,
    905 				    ("auich_intr: %p, %p = %x @ 0x%x\n",
    906 				    &sc->dmalist_pcmi[i], q,
    907 				    sc->pcmi_blksize / 2, sc->pcmi_p));
    908 
    909 				sc->pcmi_p += sc->pcmi_blksize;
    910 				if (sc->pcmi_p >= sc->pcmi_end)
    911 					sc->pcmi_p = sc->pcmi_start;
    912 
    913 				if (++qptr == ICH_DMALIST_MAX)
    914 					qptr = 0;
    915 			}
    916 
    917 			sc->ptr_pcmi = qptr;
    918 			bus_space_write_1(sc->iot, sc->aud_ioh,
    919 			    ICH_PCMI + ICH_LVI,
    920 			    (sc->ptr_pcmi - 1) & ICH_LVI_MASK);
    921 		}
    922 
    923 		if (sts & ICH_BCIS && sc->sc_rintr)
    924 			sc->sc_rintr(sc->sc_rarg);
    925 
    926 		/* int ack */
    927 		bus_space_write_2(sc->iot, sc->aud_ioh, ICH_PCMI + ICH_STS,
    928 		    sts & (ICH_LVBCI | ICH_CELV | ICH_BCIS | ICH_FIFOE));
    929 		bus_space_write_2(sc->iot, sc->aud_ioh, ICH_GSTS, ICH_POINT);
    930 		ret++;
    931 	}
    932 
    933 	if (gsts & ICH_MIINT) {
    934 		sts = bus_space_read_2(sc->iot, sc->aud_ioh, ICH_MICI+ICH_STS);
    935 		DPRINTF(ICH_DEBUG_DMA,
    936 		    ("auich_intr: ists=0x%x\n", sts));
    937 		if (sts & ICH_FIFOE)
    938 			printf("%s: fifo overrun\n", sc->sc_dev.dv_xname);
    939 
    940 		/* TODO mic input dma */
    941 
    942 		bus_space_write_2(sc->iot, sc->aud_ioh, ICH_GSTS, ICH_MIINT);
    943 	}
    944 
    945 	return ret;
    946 }
    947 
    948 int
    949 auich_trigger_output(void *v, void *start, void *end, int blksize,
    950     void (*intr)(void *), void *arg, struct audio_params *param)
    951 {
    952 	struct auich_softc *sc = v;
    953 	struct auich_dmalist *q;
    954 	struct auich_dma *p;
    955 	size_t size;
    956 
    957 	DPRINTF(ICH_DEBUG_DMA,
    958 	    ("auich_trigger_output(%p, %p, %d, %p, %p, %p)\n",
    959 	    start, end, blksize, intr, arg, param));
    960 
    961 	sc->sc_pintr = intr;
    962 	sc->sc_parg = arg;
    963 
    964 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
    965 		;
    966 	if (!p) {
    967 		printf("auich_trigger_output: bad addr %p\n", start);
    968 		return (EINVAL);
    969 	}
    970 
    971 	size = (size_t)((caddr_t)end - (caddr_t)start);
    972 
    973 	/*
    974 	 * The logic behind this is:
    975 	 * setup one buffer to play, then LVI dump out the rest
    976 	 * to the scatter-gather chain.
    977 	 */
    978 	sc->pcmo_start = DMAADDR(p);
    979 	sc->pcmo_p = sc->pcmo_start + blksize;
    980 	sc->pcmo_end = sc->pcmo_start + size;
    981 	sc->pcmo_blksize = blksize;
    982 
    983 	sc->ptr_pcmo = 0;
    984 	q = &sc->dmalist_pcmo[sc->ptr_pcmo];
    985 	q->base = sc->pcmo_start;
    986 	q->len = (blksize / 2) | ICH_DMAF_IOC;
    987 	if (++sc->ptr_pcmo == ICH_DMALIST_MAX)
    988 		sc->ptr_pcmo = 0;
    989 
    990 	bus_space_write_4(sc->iot, sc->aud_ioh, ICH_PCMO + ICH_BDBAR,
    991 	    sc->sc_cddma + ICH_PCMO_OFF(0));
    992 	bus_space_write_1(sc->iot, sc->aud_ioh, ICH_PCMO + ICH_CTRL,
    993 	    ICH_IOCE | ICH_FEIE | ICH_LVBIE | ICH_RPBM);
    994 	bus_space_write_1(sc->iot, sc->aud_ioh, ICH_PCMO + ICH_LVI,
    995 	    (sc->ptr_pcmo - 1) & ICH_LVI_MASK);
    996 
    997 	return (0);
    998 }
    999 
   1000 int
   1001 auich_trigger_input(v, start, end, blksize, intr, arg, param)
   1002 	void *v;
   1003 	void *start, *end;
   1004 	int blksize;
   1005 	void (*intr)(void *);
   1006 	void *arg;
   1007 	struct audio_params *param;
   1008 {
   1009 	struct auich_softc *sc = v;
   1010 	struct auich_dmalist *q;
   1011 	struct auich_dma *p;
   1012 	size_t size;
   1013 
   1014 	DPRINTF(ICH_DEBUG_DMA,
   1015 	    ("auich_trigger_input(%p, %p, %d, %p, %p, %p)\n",
   1016 	    start, end, blksize, intr, arg, param));
   1017 
   1018 	sc->sc_rintr = intr;
   1019 	sc->sc_rarg = arg;
   1020 
   1021 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
   1022 		;
   1023 	if (!p) {
   1024 		printf("auich_trigger_input: bad addr %p\n", start);
   1025 		return (EINVAL);
   1026 	}
   1027 
   1028 	size = (size_t)((caddr_t)end - (caddr_t)start);
   1029 
   1030 	/*
   1031 	 * The logic behind this is:
   1032 	 * setup one buffer to play, then LVI dump out the rest
   1033 	 * to the scatter-gather chain.
   1034 	 */
   1035 	sc->pcmi_start = DMAADDR(p);
   1036 	sc->pcmi_p = sc->pcmi_start + blksize;
   1037 	sc->pcmi_end = sc->pcmi_start + size;
   1038 	sc->pcmi_blksize = blksize;
   1039 
   1040 	sc->ptr_pcmi = 0;
   1041 	q = &sc->dmalist_pcmi[sc->ptr_pcmi];
   1042 	q->base = sc->pcmi_start;
   1043 	q->len = (blksize / 2) | ICH_DMAF_IOC;
   1044 	if (++sc->ptr_pcmi == ICH_DMALIST_MAX)
   1045 		sc->ptr_pcmi = 0;
   1046 
   1047 	bus_space_write_4(sc->iot, sc->aud_ioh, ICH_PCMI + ICH_BDBAR,
   1048 	    sc->sc_cddma + ICH_PCMI_OFF(0));
   1049 	bus_space_write_1(sc->iot, sc->aud_ioh, ICH_PCMI + ICH_CTRL,
   1050 	    ICH_IOCE | ICH_FEIE | ICH_LVBIE | ICH_RPBM);
   1051 	bus_space_write_1(sc->iot, sc->aud_ioh, ICH_PCMI + ICH_LVI,
   1052 	    (sc->ptr_pcmi - 1) & ICH_LVI_MASK);
   1053 
   1054 	return (0);
   1055 }
   1056 
   1057 int
   1058 auich_allocmem(struct auich_softc *sc, size_t size, size_t align,
   1059     struct auich_dma *p)
   1060 {
   1061 	int error;
   1062 
   1063 	p->size = size;
   1064 	error = bus_dmamem_alloc(sc->dmat, p->size, align, 0,
   1065 				 p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
   1066 				 &p->nsegs, BUS_DMA_NOWAIT);
   1067 	if (error)
   1068 		return (error);
   1069 
   1070 	error = bus_dmamem_map(sc->dmat, p->segs, p->nsegs, p->size,
   1071 			       &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
   1072 	if (error)
   1073 		goto free;
   1074 
   1075 	error = bus_dmamap_create(sc->dmat, p->size, 1, p->size,
   1076 				  0, BUS_DMA_NOWAIT, &p->map);
   1077 	if (error)
   1078 		goto unmap;
   1079 
   1080 	error = bus_dmamap_load(sc->dmat, p->map, p->addr, p->size, NULL,
   1081 				BUS_DMA_NOWAIT);
   1082 	if (error)
   1083 		goto destroy;
   1084 	return (0);
   1085 
   1086  destroy:
   1087 	bus_dmamap_destroy(sc->dmat, p->map);
   1088  unmap:
   1089 	bus_dmamem_unmap(sc->dmat, p->addr, p->size);
   1090  free:
   1091 	bus_dmamem_free(sc->dmat, p->segs, p->nsegs);
   1092 	return (error);
   1093 }
   1094 
   1095 int
   1096 auich_freemem(struct auich_softc *sc, struct auich_dma *p)
   1097 {
   1098 
   1099 	bus_dmamap_unload(sc->dmat, p->map);
   1100 	bus_dmamap_destroy(sc->dmat, p->map);
   1101 	bus_dmamem_unmap(sc->dmat, p->addr, p->size);
   1102 	bus_dmamem_free(sc->dmat, p->segs, p->nsegs);
   1103 	return (0);
   1104 }
   1105 
   1106 int
   1107 auich_alloc_cdata(struct auich_softc *sc)
   1108 {
   1109 	bus_dma_segment_t seg;
   1110 	int error, rseg;
   1111 
   1112 	/*
   1113 	 * Allocate the control data structure, and create and load the
   1114 	 * DMA map for it.
   1115 	 */
   1116 	if ((error = bus_dmamem_alloc(sc->dmat,
   1117 				      sizeof(struct auich_cdata),
   1118 				      PAGE_SIZE, 0, &seg, 1, &rseg, 0)) != 0) {
   1119 		printf("%s: unable to allocate control data, error = %d\n",
   1120 		    sc->sc_dev.dv_xname, error);
   1121 		goto fail_0;
   1122 	}
   1123 
   1124 	if ((error = bus_dmamem_map(sc->dmat, &seg, rseg,
   1125 				    sizeof(struct auich_cdata),
   1126 				    (caddr_t *) &sc->sc_cdata,
   1127 				    BUS_DMA_COHERENT)) != 0) {
   1128 		printf("%s: unable to map control data, error = %d\n",
   1129 		    sc->sc_dev.dv_xname, error);
   1130 		goto fail_1;
   1131 	}
   1132 
   1133 	if ((error = bus_dmamap_create(sc->dmat, sizeof(struct auich_cdata), 1,
   1134 				       sizeof(struct auich_cdata), 0, 0,
   1135 				       &sc->sc_cddmamap)) != 0) {
   1136 		printf("%s: unable to create control data DMA map, "
   1137 		    "error = %d\n", sc->sc_dev.dv_xname, error);
   1138 		goto fail_2;
   1139 	}
   1140 
   1141 	if ((error = bus_dmamap_load(sc->dmat, sc->sc_cddmamap,
   1142 				     sc->sc_cdata, sizeof(struct auich_cdata),
   1143 				     NULL, 0)) != 0) {
   1144 		printf("%s: unable tp load control data DMA map, "
   1145 		    "error = %d\n", sc->sc_dev.dv_xname, error);
   1146 		goto fail_3;
   1147 	}
   1148 
   1149 	return (0);
   1150 
   1151  fail_3:
   1152 	bus_dmamap_destroy(sc->dmat, sc->sc_cddmamap);
   1153  fail_2:
   1154 	bus_dmamem_unmap(sc->dmat, (caddr_t) sc->sc_cdata,
   1155 	    sizeof(struct auich_cdata));
   1156  fail_1:
   1157 	bus_dmamem_free(sc->dmat, &seg, rseg);
   1158  fail_0:
   1159 	return (error);
   1160 }
   1161 
   1162 void
   1163 auich_powerhook(int why, void *addr)
   1164 {
   1165 	struct auich_softc *sc = (struct auich_softc *)addr;
   1166 
   1167 	switch (why) {
   1168 	case PWR_SUSPEND:
   1169 	case PWR_STANDBY:
   1170 		/* Power down */
   1171 		DPRINTF(1, ("%s: power down\n", sc->sc_dev.dv_xname));
   1172 		sc->sc_suspend = why;
   1173 		auich_read_codec(sc, AC97_REG_EXTENDED_STATUS, &sc->ext_status);
   1174 		break;
   1175 
   1176 	case PWR_RESUME:
   1177 		/* Wake up */
   1178 		DPRINTF(1, ("%s: power resume\n", sc->sc_dev.dv_xname));
   1179 		if (sc->sc_suspend == PWR_RESUME) {
   1180 			printf("%s: resume without suspend.\n",
   1181 			    sc->sc_dev.dv_xname);
   1182 			sc->sc_suspend = why;
   1183 			return;
   1184 		}
   1185 		sc->sc_suspend = why;
   1186 		auich_reset_codec(sc);
   1187 		DELAY(1000);
   1188 		(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
   1189 		auich_write_codec(sc, AC97_REG_EXTENDED_STATUS, sc->ext_status);
   1190 		break;
   1191 
   1192 	case PWR_SOFTSUSPEND:
   1193 	case PWR_SOFTSTANDBY:
   1194 	case PWR_SOFTRESUME:
   1195 		break;
   1196 	}
   1197 }
   1198