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audioamd.c revision 1.24
      1  1.24   tsutsui /*	$NetBSD: audioamd.c,v 1.24 2009/09/17 12:38:11 tsutsui Exp $	*/
      2   1.1  augustss /*	NetBSD: am7930_sparc.c,v 1.44 1999/03/14 22:29:00 jonathan Exp 	*/
      3   1.1  augustss 
      4   1.1  augustss /*
      5   1.1  augustss  * Copyright (c) 1995 Rolf Grossmann
      6   1.1  augustss  * All rights reserved.
      7   1.1  augustss  *
      8   1.1  augustss  * Redistribution and use in source and binary forms, with or without
      9   1.1  augustss  * modification, are permitted provided that the following conditions
     10   1.1  augustss  * are met:
     11   1.1  augustss  * 1. Redistributions of source code must retain the above copyright
     12   1.1  augustss  *    notice, this list of conditions and the following disclaimer.
     13   1.1  augustss  * 2. Redistributions in binary form must reproduce the above copyright
     14   1.1  augustss  *    notice, this list of conditions and the following disclaimer in the
     15   1.1  augustss  *    documentation and/or other materials provided with the distribution.
     16   1.1  augustss  * 3. All advertising materials mentioning features or use of this software
     17   1.1  augustss  *    must display the following acknowledgement:
     18   1.1  augustss  *      This product includes software developed by Rolf Grossmann.
     19   1.1  augustss  * 4. The name of the author may not be used to endorse or promote products
     20   1.1  augustss  *    derived from this software without specific prior written permission
     21   1.1  augustss  *
     22   1.1  augustss  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23   1.1  augustss  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24   1.1  augustss  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25   1.1  augustss  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26   1.1  augustss  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27   1.1  augustss  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28   1.1  augustss  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29   1.1  augustss  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30   1.1  augustss  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31   1.1  augustss  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32   1.1  augustss  */
     33  1.17     lukem 
     34  1.17     lukem #include <sys/cdefs.h>
     35  1.24   tsutsui __KERNEL_RCSID(0, "$NetBSD: audioamd.c,v 1.24 2009/09/17 12:38:11 tsutsui Exp $");
     36   1.1  augustss 
     37   1.1  augustss #include "audio.h"
     38   1.1  augustss #if NAUDIO > 0
     39   1.1  augustss 
     40   1.1  augustss #include <sys/param.h>
     41   1.1  augustss #include <sys/systm.h>
     42   1.1  augustss #include <sys/errno.h>
     43   1.1  augustss #include <sys/device.h>
     44  1.22        ad #include <sys/bus.h>
     45  1.22        ad #include <sys/intr.h>
     46  1.23        ad #include <sys/mutex.h>
     47   1.1  augustss 
     48   1.1  augustss #include <machine/autoconf.h>
     49   1.1  augustss 
     50   1.1  augustss #include <sys/audioio.h>
     51   1.1  augustss #include <dev/audio_if.h>
     52   1.1  augustss 
     53   1.1  augustss #include <dev/ic/am7930reg.h>
     54   1.1  augustss #include <dev/ic/am7930var.h>
     55   1.3   mycroft #include <sparc/dev/audioamdvar.h>
     56   1.1  augustss 
     57   1.1  augustss #define AUDIO_ROM_NAME "audio"
     58   1.1  augustss 
     59   1.1  augustss #ifdef AUDIO_DEBUG
     60   1.1  augustss #define DPRINTF(x)      if (am7930debug) printf x
     61   1.1  augustss #define DPRINTFN(n,x)   if (am7930debug>(n)) printf x
     62   1.1  augustss #else
     63   1.1  augustss #define DPRINTF(x)
     64   1.1  augustss #define DPRINTFN(n,x)
     65   1.1  augustss #endif	/* AUDIO_DEBUG */
     66   1.1  augustss 
     67   1.1  augustss 
     68   1.1  augustss /* interrupt interfaces */
     69  1.20      kent int	am7930hwintr(void *);
     70   1.1  augustss struct auio *auiop;
     71  1.20      kent void	am7930swintr(void *);
     72   1.1  augustss 
     73  1.15        pk /* from amd7930intr.s: */
     74  1.15        pk void	amd7930_trap(void);
     75  1.15        pk 
     76   1.1  augustss /*
     77  1.20      kent  * interrupt-handler status
     78   1.1  augustss  */
     79   1.1  augustss struct am7930_intrhand {
     80  1.20      kent 	int	(*ih_fun)(void *);
     81   1.1  augustss 	void	*ih_arg;
     82   1.1  augustss };
     83   1.1  augustss 
     84   1.1  augustss struct audioamd_softc {
     85   1.1  augustss 	struct am7930_softc sc_am7930;	/* glue to MI code */
     86   1.1  augustss 
     87   1.1  augustss 	bus_space_tag_t sc_bt;		/* bus cookie */
     88   1.1  augustss 	bus_space_handle_t sc_bh;	/* device registers */
     89   1.1  augustss 
     90   1.1  augustss 	struct am7930_intrhand	sc_ih;	/* interrupt vector (hw or sw)  */
     91   1.1  augustss 	void	(*sc_rintr)(void*);	/* input completion intr handler */
     92   1.1  augustss 	void	*sc_rarg;		/* arg for sc_rintr() */
     93   1.1  augustss 	void	(*sc_pintr)(void*);	/* output completion intr handler */
     94   1.1  augustss 	void	*sc_parg;		/* arg for sc_pintr() */
     95   1.1  augustss 
     96   1.1  augustss 	/* sc_au is special in that the hardware interrupt handler uses it */
     97   1.1  augustss 	struct  auio sc_au;		/* recv and xmit buffers, etc */
     98   1.1  augustss #define sc_intrcnt	sc_au.au_intrcnt	/* statistics */
     99  1.14        pk 	void	*sc_sicookie;		/* softintr(9) cookie */
    100  1.23        ad 	kmutex_t	sc_lock;
    101   1.1  augustss };
    102   1.1  augustss 
    103  1.24   tsutsui int	audioamd_mainbus_match(device_t, cfdata_t, void *);
    104  1.24   tsutsui void	audioamd_mainbus_attach(device_t, device_t, void *);
    105  1.24   tsutsui int	audioamd_obio_match(device_t, cfdata_t, void *);
    106  1.24   tsutsui void	audioamd_obio_attach(device_t, device_t, void *);
    107  1.24   tsutsui int	audioamd_sbus_match(device_t, cfdata_t, void *);
    108  1.24   tsutsui void	audioamd_sbus_attach(device_t, device_t, void *);
    109  1.20      kent void	audioamd_attach(struct audioamd_softc *, int);
    110   1.1  augustss 
    111  1.11   thorpej CFATTACH_DECL(audioamd_mainbus, sizeof(struct audioamd_softc),
    112  1.12   thorpej     audioamd_mainbus_match, audioamd_mainbus_attach, NULL, NULL);
    113   1.1  augustss 
    114  1.13       jdc CFATTACH_DECL(audioamd_obio, sizeof(struct audioamd_softc),
    115  1.13       jdc     audioamd_obio_match, audioamd_obio_attach, NULL, NULL);
    116  1.13       jdc 
    117  1.11   thorpej CFATTACH_DECL(audioamd_sbus, sizeof(struct audioamd_softc),
    118  1.12   thorpej     audioamd_sbus_match, audioamd_sbus_attach, NULL, NULL);
    119   1.1  augustss 
    120   1.1  augustss /*
    121   1.1  augustss  * Define our interface into the am7930 MI driver.
    122   1.1  augustss  */
    123   1.1  augustss 
    124  1.20      kent uint8_t	audioamd_codec_iread(struct am7930_softc *, int);
    125  1.20      kent uint16_t	audioamd_codec_iread16(struct am7930_softc *, int);
    126  1.20      kent uint8_t	audioamd_codec_dread(struct audioamd_softc *, int);
    127  1.20      kent void	audioamd_codec_iwrite(struct am7930_softc *, int, uint8_t);
    128  1.20      kent void	audioamd_codec_iwrite16(struct am7930_softc *, int, uint16_t);
    129  1.20      kent void	audioamd_codec_dwrite(struct audioamd_softc *, int, uint8_t);
    130  1.20      kent void	audioamd_onopen(struct am7930_softc *);
    131  1.20      kent void	audioamd_onclose(struct am7930_softc *);
    132   1.1  augustss 
    133   1.1  augustss struct am7930_glue audioamd_glue = {
    134   1.1  augustss 	audioamd_codec_iread,
    135   1.1  augustss 	audioamd_codec_iwrite,
    136   1.1  augustss 	audioamd_codec_iread16,
    137   1.1  augustss 	audioamd_codec_iwrite16,
    138   1.1  augustss 	audioamd_onopen,
    139   1.1  augustss 	audioamd_onclose,
    140   1.1  augustss 	0,
    141   1.1  augustss 	0,
    142   1.1  augustss 	0,
    143   1.1  augustss };
    144   1.1  augustss 
    145   1.1  augustss /*
    146   1.1  augustss  * Define our interface to the higher level audio driver.
    147   1.1  augustss  */
    148  1.20      kent int	audioamd_start_output(void *, void *, int, void (*)(void *), void *);
    149  1.20      kent int	audioamd_start_input(void *, void *, int, void (*)(void *), void *);
    150  1.20      kent int	audioamd_getdev(void *, struct audio_device *);
    151   1.1  augustss 
    152  1.19      yamt const struct audio_hw_if sa_hw_if = {
    153   1.1  augustss 	am7930_open,
    154   1.1  augustss 	am7930_close,
    155   1.1  augustss 	0,
    156   1.1  augustss 	am7930_query_encoding,
    157   1.1  augustss 	am7930_set_params,
    158   1.1  augustss 	am7930_round_blocksize,
    159   1.1  augustss 	am7930_commit_settings,
    160   1.1  augustss 	0,
    161   1.1  augustss 	0,
    162   1.1  augustss 	audioamd_start_output,		/* md */
    163   1.1  augustss 	audioamd_start_input,		/* md */
    164   1.1  augustss 	am7930_halt_output,
    165   1.1  augustss 	am7930_halt_input,
    166   1.1  augustss 	0,
    167   1.1  augustss 	audioamd_getdev,
    168   1.1  augustss 	0,
    169   1.1  augustss 	am7930_set_port,
    170   1.1  augustss 	am7930_get_port,
    171   1.1  augustss 	am7930_query_devinfo,
    172   1.1  augustss 	0,
    173   1.1  augustss 	0,
    174   1.1  augustss 	0,
    175  1.20      kent 	0,
    176   1.1  augustss 	am7930_get_props,
    177   1.7  augustss 	0,
    178   1.7  augustss 	0,
    179  1.20      kent 	0,
    180   1.1  augustss };
    181   1.1  augustss 
    182   1.1  augustss struct audio_device audioamd_device = {
    183   1.1  augustss 	"am7930",
    184   1.1  augustss 	"x",
    185   1.1  augustss 	"audioamd"
    186   1.1  augustss };
    187   1.1  augustss 
    188   1.1  augustss 
    189   1.1  augustss int
    190  1.24   tsutsui audioamd_mainbus_match(device_t parent, cfdata_t cf, void *aux)
    191   1.1  augustss {
    192  1.20      kent 	struct mainbus_attach_args *ma;
    193   1.1  augustss 
    194  1.20      kent 	ma = aux;
    195   1.1  augustss 	if (CPU_ISSUN4)
    196  1.20      kent 		return 0;
    197  1.20      kent 	return strcmp(AUDIO_ROM_NAME, ma->ma_name) == 0;
    198   1.1  augustss }
    199   1.1  augustss 
    200   1.1  augustss int
    201  1.24   tsutsui audioamd_obio_match(device_t parent, cfdata_t cf, void *aux)
    202  1.13       jdc {
    203  1.20      kent 	union obio_attach_args *uoba;
    204  1.13       jdc 
    205  1.20      kent 	uoba = aux;
    206  1.13       jdc 	if (uoba->uoba_isobio4 != 0)
    207  1.20      kent 		return 0;
    208  1.13       jdc 
    209  1.20      kent 	return strcmp("audio", uoba->uoba_sbus.sa_name) == 0;
    210  1.13       jdc }
    211  1.13       jdc 
    212  1.13       jdc int
    213  1.24   tsutsui audioamd_sbus_match(device_t parent, cfdata_t cf, void *aux)
    214   1.1  augustss {
    215  1.20      kent 	struct sbus_attach_args *sa;
    216   1.1  augustss 
    217  1.20      kent 	sa = aux;
    218  1.20      kent 	return strcmp(AUDIO_ROM_NAME, sa->sa_name) == 0;
    219   1.1  augustss }
    220   1.1  augustss 
    221   1.1  augustss void
    222  1.24   tsutsui audioamd_mainbus_attach(device_t parent, device_t self, void *aux)
    223   1.1  augustss {
    224  1.20      kent 	struct mainbus_attach_args *ma;
    225  1.20      kent 	struct audioamd_softc *sc;
    226   1.1  augustss 	bus_space_handle_t bh;
    227   1.1  augustss 
    228  1.20      kent 	ma = aux;
    229  1.24   tsutsui 	sc = device_private(self);
    230   1.1  augustss 	sc->sc_bt = ma->ma_bustag;
    231   1.1  augustss 
    232   1.8        pk 	if (bus_space_map(
    233   1.1  augustss 			ma->ma_bustag,
    234   1.1  augustss 			ma->ma_paddr,
    235   1.2   mycroft 			AM7930_DREG_SIZE,
    236   1.1  augustss 			BUS_SPACE_MAP_LINEAR,
    237   1.1  augustss 			&bh) != 0) {
    238  1.24   tsutsui 		printf("%s: cannot map registers\n", device_xname(self));
    239   1.1  augustss 		return;
    240   1.1  augustss 	}
    241   1.1  augustss 	sc->sc_bh = bh;
    242   1.1  augustss 	audioamd_attach(sc, ma->ma_pri);
    243   1.1  augustss }
    244   1.1  augustss 
    245  1.13       jdc void
    246  1.24   tsutsui audioamd_obio_attach(device_t parent, device_t self, void *aux)
    247  1.20      kent {
    248  1.20      kent 	union obio_attach_args *uoba;
    249  1.20      kent 	struct sbus_attach_args *sa;
    250  1.20      kent 	struct audioamd_softc *sc;
    251  1.13       jdc 	bus_space_handle_t bh;
    252  1.13       jdc 
    253  1.20      kent 	uoba = aux;
    254  1.20      kent 	sa = &uoba->uoba_sbus;
    255  1.24   tsutsui 	sc = device_private(self);
    256  1.13       jdc 	sc->sc_bt = sa->sa_bustag;
    257  1.13       jdc 
    258  1.13       jdc 	if (sbus_bus_map(sa->sa_bustag,
    259  1.13       jdc 			 sa->sa_slot, sa->sa_offset,
    260  1.13       jdc 			 AM7930_DREG_SIZE,
    261  1.13       jdc 			 0, &bh) != 0) {
    262  1.24   tsutsui 		printf("%s: cannot map registers\n", device_xname(self));
    263  1.13       jdc 		return;
    264  1.13       jdc 	}
    265  1.13       jdc 	sc->sc_bh = bh;
    266  1.13       jdc 	audioamd_attach(sc, sa->sa_pri);
    267  1.13       jdc }
    268   1.1  augustss 
    269   1.1  augustss void
    270  1.24   tsutsui audioamd_sbus_attach(device_t parent, device_t self, void *aux)
    271   1.1  augustss {
    272  1.20      kent 	struct sbus_attach_args *sa;
    273  1.20      kent 	struct audioamd_softc *sc;
    274   1.1  augustss 	bus_space_handle_t bh;
    275   1.1  augustss 
    276  1.20      kent 	sa = aux;
    277  1.24   tsutsui 	sc = device_private(self);
    278   1.1  augustss 	sc->sc_bt = sa->sa_bustag;
    279   1.1  augustss 
    280   1.8        pk 	if (sbus_bus_map(sa->sa_bustag,
    281   1.8        pk 			 sa->sa_slot, sa->sa_offset,
    282   1.8        pk 			 AM7930_DREG_SIZE,
    283   1.8        pk 			 0, &bh) != 0) {
    284  1.24   tsutsui 		printf("%s: cannot map registers\n", device_xname(self));
    285   1.1  augustss 		return;
    286   1.1  augustss 	}
    287   1.1  augustss 	sc->sc_bh = bh;
    288   1.1  augustss 	audioamd_attach(sc, sa->sa_pri);
    289   1.1  augustss }
    290   1.1  augustss 
    291   1.1  augustss void
    292  1.20      kent audioamd_attach(struct audioamd_softc *sc, int pri)
    293   1.1  augustss {
    294  1.24   tsutsui 	device_t self;
    295   1.1  augustss 
    296   1.1  augustss 	/*
    297   1.1  augustss 	 * Set up glue for MI code early; we use some of it here.
    298   1.1  augustss 	 */
    299  1.24   tsutsui 	self = &sc->sc_am7930.sc_dev;
    300   1.2   mycroft 	sc->sc_am7930.sc_glue = &audioamd_glue;
    301  1.23        ad 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_HIGH);
    302   1.1  augustss 
    303   1.2   mycroft 	am7930_init(&sc->sc_am7930, AUDIOAMD_POLL_MODE);
    304   1.1  augustss 
    305  1.14        pk 	auiop = &sc->sc_au;
    306  1.15        pk 
    307  1.15        pk 	/* Copy bus tag & handle for use by am7930_trap */
    308  1.15        pk 	sc->sc_au.au_bt = sc->sc_bt;
    309  1.15        pk 	sc->sc_au.au_bh = sc->sc_bh;
    310  1.23        ad 	(void)bus_intr_establish2(sc->sc_bt, pri, IPL_HIGH,
    311  1.15        pk 				  am7930hwintr, sc, amd7930_trap);
    312  1.14        pk 
    313  1.22        ad 	sc->sc_sicookie = softint_establish(SOFTINT_SERIAL, am7930swintr, sc);
    314  1.14        pk 	if (sc->sc_sicookie == NULL) {
    315  1.14        pk 		printf("\n%s: cannot establish software interrupt\n",
    316  1.24   tsutsui 			device_xname(self));
    317  1.14        pk 		return;
    318  1.14        pk 	}
    319  1.14        pk 
    320  1.14        pk 	printf(" softpri %d\n", IPL_SOFTAUDIO);
    321  1.14        pk 
    322   1.1  augustss 
    323   1.4       cgd 	evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
    324  1.24   tsutsui 	    device_xname(self), "intr");
    325   1.1  augustss 
    326  1.24   tsutsui 	audio_attach_mi(&sa_hw_if, sc, self);
    327   1.1  augustss }
    328   1.1  augustss 
    329   1.1  augustss 
    330   1.1  augustss void
    331  1.20      kent audioamd_onopen(struct am7930_softc *sc)
    332   1.1  augustss {
    333  1.20      kent 	struct audioamd_softc *mdsc;
    334   1.1  augustss 
    335  1.20      kent 	mdsc = (struct audioamd_softc *)sc;
    336  1.23        ad 
    337   1.1  augustss 	/* reset pdma state */
    338  1.23        ad 	mutex_spin_enter(&mdsc->sc_lock);
    339   1.1  augustss 	mdsc->sc_rintr = 0;
    340   1.1  augustss 	mdsc->sc_rarg = 0;
    341   1.1  augustss 	mdsc->sc_pintr = 0;
    342   1.1  augustss 	mdsc->sc_parg = 0;
    343   1.1  augustss 	mdsc->sc_au.au_rdata = 0;
    344   1.1  augustss 	mdsc->sc_au.au_pdata = 0;
    345  1.23        ad 	mutex_spin_exit(&mdsc->sc_lock);
    346   1.1  augustss }
    347   1.1  augustss 
    348   1.1  augustss 
    349   1.1  augustss void
    350  1.20      kent audioamd_onclose(struct am7930_softc *sc)
    351   1.1  augustss {
    352   1.1  augustss 	/* On sparc, just do the chipset-level halt. */
    353   1.1  augustss 	am7930_halt_input(sc);
    354   1.1  augustss 	am7930_halt_output(sc);
    355   1.1  augustss }
    356   1.1  augustss 
    357   1.1  augustss int
    358  1.20      kent audioamd_start_output(void *addr, void *p, int cc,
    359  1.20      kent 		      void (*intr)(void *), void *arg)
    360   1.1  augustss {
    361  1.20      kent 	struct audioamd_softc *sc;
    362   1.1  augustss 
    363   1.1  augustss 	DPRINTFN(1, ("sa_start_output: cc=%d %p (%p)\n", cc, intr, arg));
    364  1.20      kent 	sc = addr;
    365  1.23        ad 
    366  1.23        ad 	mutex_spin_enter(&sc->sc_lock);
    367  1.18   mycroft 	audioamd_codec_iwrite(&sc->sc_am7930,
    368  1.20      kent 	    AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE);
    369   1.1  augustss 	sc->sc_pintr = intr;
    370   1.1  augustss 	sc->sc_parg = arg;
    371   1.1  augustss 	sc->sc_au.au_pdata = p;
    372   1.1  augustss 	sc->sc_au.au_pend = (char *)p + cc - 1;
    373  1.23        ad 	mutex_spin_exit(&sc->sc_lock);
    374  1.23        ad 
    375  1.23        ad 	DPRINTF(("sa_start_output: started intrs.\n"));
    376   1.1  augustss 	return(0);
    377   1.1  augustss }
    378   1.1  augustss 
    379   1.1  augustss int
    380  1.20      kent audioamd_start_input(void *addr, void *p, int cc,
    381  1.20      kent 		     void (*intr)(void *), void *arg)
    382   1.1  augustss {
    383  1.20      kent 	struct audioamd_softc *sc;
    384   1.1  augustss 
    385   1.1  augustss 	DPRINTFN(1, ("sa_start_input: cc=%d %p (%p)\n", cc, intr, arg));
    386  1.20      kent 	sc = addr;
    387  1.23        ad 
    388  1.23        ad 	mutex_spin_enter(&sc->sc_lock);
    389  1.18   mycroft 	audioamd_codec_iwrite(&sc->sc_am7930,
    390  1.20      kent 	    AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE);
    391   1.1  augustss 	sc->sc_rintr = intr;
    392   1.1  augustss 	sc->sc_rarg = arg;
    393   1.1  augustss 	sc->sc_au.au_rdata = p;
    394   1.1  augustss 	sc->sc_au.au_rend = (char *)p + cc -1;
    395  1.23        ad 	mutex_spin_exit(&sc->sc_lock);
    396  1.23        ad 
    397  1.23        ad 	DPRINTF(("sa_start_input: started intrs.\n"));
    398  1.23        ad 
    399   1.1  augustss 	return(0);
    400   1.1  augustss }
    401   1.1  augustss 
    402   1.1  augustss 
    403   1.1  augustss /*
    404   1.1  augustss  * Pseudo-DMA support: either C or locore assember.
    405   1.1  augustss  */
    406   1.1  augustss 
    407   1.1  augustss int
    408  1.20      kent am7930hwintr(void *v)
    409   1.1  augustss {
    410  1.20      kent 	struct audioamd_softc *sc;
    411  1.20      kent 	struct auio *au;
    412  1.20      kent 	uint8_t *d, *e;
    413   1.1  augustss 	int k;
    414   1.1  augustss 
    415  1.20      kent 	sc = v;
    416  1.20      kent 	au = &sc->sc_au;
    417  1.23        ad 	mutex_spin_enter(&sc->sc_lock);
    418  1.23        ad 
    419   1.1  augustss 	/* clear interrupt */
    420   1.1  augustss 	k = audioamd_codec_dread(sc, AM7930_DREG_IR);
    421  1.14        pk 	if ((k & (AM7930_IR_DTTHRSH|AM7930_IR_DRTHRSH|AM7930_IR_DSRI|
    422  1.23        ad 		  AM7930_IR_DERI|AM7930_IR_BBUFF)) == 0) {
    423  1.23        ad 		mutex_spin_exit(&sc->sc_lock);
    424  1.20      kent 		return 0;
    425  1.23        ad 	}
    426   1.1  augustss 
    427   1.1  augustss 	/* receive incoming data */
    428   1.1  augustss 	d = au->au_rdata;
    429   1.1  augustss 	e = au->au_rend;
    430   1.1  augustss 	if (d && d <= e) {
    431   1.1  augustss 		*d = audioamd_codec_dread(sc, AM7930_DREG_BBRB);
    432   1.1  augustss 		au->au_rdata++;
    433   1.1  augustss 		if (d == e) {
    434   1.1  augustss 			DPRINTFN(1, ("am7930hwintr: swintr(r) requested"));
    435  1.22        ad 			softint_schedule(sc->sc_sicookie);
    436   1.1  augustss 		}
    437   1.1  augustss 	}
    438   1.1  augustss 
    439   1.1  augustss 	/* send outgoing data */
    440   1.1  augustss 	d = au->au_pdata;
    441   1.1  augustss 	e = au->au_pend;
    442   1.1  augustss 	if (d && d <= e) {
    443   1.1  augustss 		audioamd_codec_dwrite(sc, AM7930_DREG_BBTB, *d);
    444   1.1  augustss 		au->au_pdata++;
    445   1.1  augustss 		if (d == e) {
    446   1.1  augustss 			DPRINTFN(1, ("am7930hwintr: swintr(p) requested"));
    447  1.22        ad 			softint_schedule(sc->sc_sicookie);
    448   1.1  augustss 		}
    449   1.1  augustss 	}
    450   1.1  augustss 
    451   1.9  gmcgarry 	au->au_intrcnt.ev_count++;
    452  1.23        ad 	mutex_spin_exit(&sc->sc_lock);
    453  1.23        ad 
    454  1.20      kent 	return 1;
    455   1.1  augustss }
    456   1.1  augustss 
    457  1.14        pk void
    458  1.20      kent am7930swintr(void *sc0)
    459   1.1  augustss {
    460  1.20      kent 	struct audioamd_softc *sc;
    461   1.1  augustss 	struct auio *au;
    462  1.23        ad 	bool pint;
    463   1.1  augustss 
    464  1.20      kent 	sc = sc0;
    465   1.1  augustss 	DPRINTFN(1, ("audiointr: sc=%p\n", sc););
    466   1.1  augustss 
    467   1.1  augustss 	au = &sc->sc_au;
    468  1.23        ad 	mutex_spin_enter(&sc->sc_lock);
    469   1.1  augustss 	if (au->au_rdata > au->au_rend && sc->sc_rintr != NULL) {
    470  1.23        ad 		mutex_spin_exit(&sc->sc_lock);
    471   1.1  augustss 		(*sc->sc_rintr)(sc->sc_rarg);
    472  1.23        ad 		mutex_spin_enter(&sc->sc_lock);
    473   1.1  augustss 	}
    474  1.23        ad 	pint = (au->au_pdata > au->au_pend && sc->sc_pintr != NULL);
    475  1.23        ad 	mutex_spin_exit(&sc->sc_lock);
    476  1.23        ad 	if (pint)
    477   1.1  augustss 		(*sc->sc_pintr)(sc->sc_parg);
    478   1.1  augustss }
    479   1.1  augustss 
    480   1.1  augustss 
    481   1.1  augustss /* indirect write */
    482   1.1  augustss void
    483  1.20      kent audioamd_codec_iwrite(struct am7930_softc *sc, int reg, uint8_t val)
    484   1.1  augustss {
    485  1.20      kent 	struct audioamd_softc *mdsc;
    486   1.2   mycroft 
    487  1.20      kent 	mdsc = (struct audioamd_softc *)sc;
    488   1.2   mycroft 	audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg);
    489   1.2   mycroft 	audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val);
    490   1.1  augustss }
    491   1.1  augustss 
    492   1.1  augustss void
    493  1.20      kent audioamd_codec_iwrite16(struct am7930_softc *sc, int reg, uint16_t val)
    494   1.1  augustss {
    495  1.20      kent 	struct audioamd_softc *mdsc;
    496   1.2   mycroft 
    497  1.20      kent 	mdsc = (struct audioamd_softc *)sc;
    498   1.2   mycroft 	audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg);
    499   1.2   mycroft 	audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val);
    500   1.2   mycroft 	audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val>>8);
    501   1.1  augustss }
    502   1.1  augustss 
    503   1.1  augustss 
    504   1.1  augustss /* indirect read */
    505  1.20      kent uint8_t
    506  1.20      kent audioamd_codec_iread(struct am7930_softc *sc, int reg)
    507   1.1  augustss {
    508  1.20      kent 	struct audioamd_softc *mdsc;
    509   1.2   mycroft 
    510  1.20      kent 	mdsc = (struct audioamd_softc *)sc;
    511   1.2   mycroft 	audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg);
    512   1.2   mycroft 	return (audioamd_codec_dread(mdsc, AM7930_DREG_DR));
    513   1.1  augustss }
    514   1.1  augustss 
    515  1.20      kent uint16_t
    516  1.20      kent audioamd_codec_iread16(struct am7930_softc *sc, int reg)
    517   1.1  augustss {
    518  1.20      kent 	struct audioamd_softc *mdsc;
    519  1.20      kent 	uint8_t lo, hi;
    520   1.2   mycroft 
    521  1.20      kent 	mdsc = (struct audioamd_softc *)sc;
    522   1.2   mycroft 	audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg);
    523   1.2   mycroft 	lo = audioamd_codec_dread(mdsc, AM7930_DREG_DR);
    524   1.2   mycroft 	hi = audioamd_codec_dread(mdsc, AM7930_DREG_DR);
    525  1.20      kent 	return (hi << 8) | lo;
    526   1.1  augustss }
    527   1.1  augustss 
    528   1.1  augustss /* direct read */
    529  1.20      kent uint8_t
    530  1.20      kent audioamd_codec_dread(struct audioamd_softc *sc, int reg)
    531   1.2   mycroft {
    532  1.20      kent 
    533  1.20      kent 	return bus_space_read_1(sc->sc_bt, sc->sc_bh, reg);
    534   1.2   mycroft }
    535   1.2   mycroft 
    536   1.2   mycroft /* direct write */
    537   1.2   mycroft void
    538  1.20      kent audioamd_codec_dwrite(struct audioamd_softc *sc, int reg, uint8_t val)
    539   1.1  augustss {
    540  1.20      kent 
    541   1.2   mycroft 	bus_space_write_1(sc->sc_bt, sc->sc_bh, reg, val);
    542   1.2   mycroft }
    543   1.2   mycroft 
    544   1.2   mycroft int
    545  1.20      kent audioamd_getdev(void *addr, struct audio_device *retp)
    546   1.2   mycroft {
    547   1.2   mycroft 
    548   1.2   mycroft 	*retp = audioamd_device;
    549  1.20      kent 	return 0;
    550   1.1  augustss }
    551   1.1  augustss 
    552   1.1  augustss #endif /* NAUDIO > 0 */
    553