* als4000 can't do 48k properly (perhaps it really can't at all!).

Set maxspeed to 44.1k instead.
* Add locking / MPSAFE
* Fix recording

Submitted by:	Ariff Abdullah <skywizard@MyBSD.org.my>

sys/dev/sound/pci/als4000.c

@@ -75,6 +75,7 @@ struct sc_info {
 	struct resource		*reg, *irq;
 	int			regid, irqid;
 	void			*ih;
+	struct mtx		*lock;
 
 	unsigned int		bufsz;
 	struct sc_chinfo	pch, rch;
@@ -90,7 +91,11 @@ static u_int32_t als_format[] = {
         0
 };
 
-static struct pcmchan_caps als_caps = { 4000, 48000, als_format, 0 };
+/*
+ * I don't believe this rotten soundcard can do 48k, really,
+ * trust me.
+ */
+static struct pcmchan_caps als_caps = { 4000, 44100, als_format, 0 };
 
 /* ------------------------------------------------------------------------- */
 /* Register Utilities */
@@ -199,6 +204,7 @@ alschan_init(kobj_t obj, void *devinfo,
 	struct	sc_info	*sc = devinfo;
 	struct	sc_chinfo *ch;
 
+	snd_mtxlock(sc->lock);
 	if (dir == PCMDIR_PLAY) {
 		ch = &sc->pch;
 		ch->gcr_fifo_status = ALS_GCR_FIFO0_STATUS;
@@ -214,8 +220,10 @@ alschan_init(kobj_t obj, void *devinfo,
 	ch->speed = DSP_DEFAULT_SPEED;
 	ch->buffer = b;
 	if (sndbuf_alloc(ch->buffer, sc->parent_dmat, sc->bufsz) != 0) {
+		snd_mtxunlock(sc->lock);
 		return NULL;
 	}
+	snd_mtxunlock(sc->lock);
 	return ch;
 }
 
@@ -223,8 +231,11 @@ static int
 alschan_setformat(kobj_t obj, void *data, u_int32_t format)
 {
 	struct	sc_chinfo *ch = data;
+	struct  sc_info *sc = ch->parent;
 
+	snd_mtxlock(sc->lock);
 	ch->format = format;
+	snd_mtxunlock(sc->lock);
 	return 0;
 }
 
@@ -234,15 +245,18 @@ alschan_setspeed(kobj_t obj, void *data, u_int32_t speed)
 	struct	sc_chinfo *ch = data, *other;
 	struct  sc_info *sc = ch->parent;
 
+	snd_mtxlock(sc->lock);
 	other = (ch->dir == PCMDIR_PLAY) ? &sc->rch : &sc->pch;
 
 	/* Deny request if other dma channel is active */
 	if (other->dma_active) {
 		ch->speed = other->speed;
+		snd_mtxunlock(sc->lock);
 		return other->speed;
 	}
 
 	ch->speed = speed;
+	snd_mtxunlock(sc->lock);
 	return speed;
 }
 
@@ -263,10 +277,13 @@ static int
 alschan_getptr(kobj_t obj, void *data)
 {
 	struct sc_chinfo *ch = data;
+	struct sc_info *sc = ch->parent;
 	int32_t pos, sz;
 
+	snd_mtxlock(sc->lock);
 	pos = als_gcr_rd(ch->parent, ch->gcr_fifo_status) & 0xffff;
 	sz  = sndbuf_getsize(ch->buffer);
+	snd_mtxunlock(sc->lock);
 	return (2 * sz - pos - 1) % sz;
 }
 
@@ -378,7 +395,9 @@ static int
 alspchan_trigger(kobj_t obj, void *data, int go)
 {
 	struct	sc_chinfo *ch = data;
+	struct  sc_info *sc = ch->parent;
 
+	snd_mtxlock(sc->lock);
 	switch(go) {
 	case PCMTRIG_START:
 		als_playback_start(ch);
@@ -387,6 +406,7 @@ alspchan_trigger(kobj_t obj, void *data, int go)
 		als_playback_stop(ch);
 		break;
 	}
+	snd_mtxunlock(sc->lock);
 	return 0;
 }
 
@@ -468,7 +488,9 @@ static int
 alsrchan_trigger(kobj_t obj, void *data, int go)
 {
 	struct	sc_chinfo *ch = data;
+	struct  sc_info *sc = ch->parent;
 
+	snd_mtxlock(sc->lock);
 	switch(go) {
 	case PCMTRIG_START:
 		als_capture_start(ch);
@@ -477,6 +499,7 @@ alsrchan_trigger(kobj_t obj, void *data, int go)
 		als_capture_stop(ch);
 		break;
 	}
+	snd_mtxunlock(sc->lock);
 	return 0;
 }
 
@@ -574,7 +597,7 @@ static int
 alsmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
 {
 	struct sc_info *sc = mix_getdevinfo(m);
-	u_int32_t i, l, r;
+	u_int32_t i, l, r, mask;
 
 	for (i = l = r = 0; i < SOUND_MIXER_NRDEVICES; i++) {
 		if (src & (1 << i)) {
@@ -583,8 +606,24 @@ alsmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
 		}
 	}
 
-	als_mix_wr(sc, SB16_IMASK_L, l);
+	/* ALS mixer is really an SB16 mixer */
-	als_mix_wr(sc, SB16_IMASK_R, r);
+
+	mask = 0;
+	
+	if (src & SOUND_MASK_MIC)
+		mask |= 0x01;
+		
+	if (src & SOUND_MASK_CD)
+		mask |= 0x06;
+		
+	if (src & SOUND_MASK_LINE)
+		mask |= 0x18;
+		
+	if (src & SOUND_MASK_SYNTH)
+		mask |= 0x60;
+		
+	als_mix_wr(sc, SB16_IMASK_L, l|mask);
+	als_mix_wr(sc, SB16_IMASK_R, r|mask);
 	return src;
 }
 
@@ -605,13 +644,20 @@ als_intr(void *p)
 	struct sc_info *sc = (struct sc_info *)p;
 	u_int8_t intr, sb_status;
 
+	snd_mtxlock(sc->lock);
 	intr = als_intr_rd(sc);
 
-	if (intr & 0x80)
+	if (intr & 0x80) {
+		snd_mtxunlock(sc->lock);
 		chn_intr(sc->pch.channel);
+		snd_mtxlock(sc->lock);
+	}
 
-	if (intr & 0x40)
+	if (intr & 0x40) {
+		snd_mtxunlock(sc->lock);
 		chn_intr(sc->rch.channel);
+		snd_mtxlock(sc->lock);
+	}
 
 	/* ACK interrupt in PCI core */
 	als_intr_wr(sc, intr);
@@ -627,6 +673,8 @@ als_intr(void *p)
 		als_ack_read(sc, ALS_MIDI_DATA);
 	if (sb_status & ALS_IRQ_CR1E)
 		als_ack_read(sc, ALS_CR1E_ACK_PORT);
+
+	snd_mtxunlock(sc->lock);
 	return;
 }
 
@@ -708,6 +756,10 @@ als_resource_free(device_t dev, struct sc_info *sc)
 		bus_dma_tag_destroy(sc->parent_dmat);
 		sc->parent_dmat = 0;
 	}
+	if (sc->lock) {
+		snd_mtxfree(sc->lock);
+		sc->lock = NULL;
+	}
 }
 
 static int
@@ -730,7 +782,7 @@ als_resource_grab(device_t dev, struct sc_info *sc)
 		goto bad;
 	}
 
-	if (bus_setup_intr(dev, sc->irq, INTR_TYPE_AV, als_intr,
+	if (snd_setup_intr(dev, sc->irq, INTR_MPSAFE, als_intr,
 			   sc, &sc->ih)) {
 		device_printf(dev, "unable to setup interrupt\n");
 		goto bad;
@@ -745,8 +797,8 @@ als_resource_grab(device_t dev, struct sc_info *sc)
 			       /*filter*/NULL, /*filterarg*/NULL,
 			       /*maxsize*/sc->bufsz,
 			       /*nsegments*/1, /*maxsegz*/0x3ffff,
-			       /*flags*/0, /*lockfunc*/busdma_lock_mutex,
+			       /*flags*/0, /*lockfunc*/NULL,
-			       /*lockarg*/&Giant, &sc->parent_dmat) != 0) {
+			       /*lockarg*/NULL, &sc->parent_dmat) != 0) {
 		device_printf(dev, "unable to create dma tag\n");
 		goto bad;
 	}
@@ -768,6 +820,7 @@ als_pci_attach(device_t dev)
 		return ENXIO;
 	}
 
+	sc->lock = snd_mtxcreate(device_get_nameunit(dev), "sound softc");
 	sc->dev = dev;
 
 	data = pci_read_config(dev, PCIR_COMMAND, 2);
@@ -851,9 +904,11 @@ als_pci_suspend(device_t dev)
 {
 	struct sc_info *sc = pcm_getdevinfo(dev);
 
+	snd_mtxlock(sc->lock);
 	sc->pch.dma_was_active = als_playback_stop(&sc->pch);
 	sc->rch.dma_was_active = als_capture_stop(&sc->rch);
 	als_uninit(sc);
+	snd_mtxunlock(sc->lock);
 	return 0;
 }
 
@@ -862,13 +917,17 @@ als_pci_resume(device_t dev)
 {
 	struct sc_info *sc = pcm_getdevinfo(dev);
 
+	snd_mtxlock(sc->lock);
+
 	if (als_init(sc) != 0) {
 		device_printf(dev, "unable to reinitialize the card\n");
+		snd_mtxunlock(sc->lock);
 		return ENXIO;
 	}
 
 	if (mixer_reinit(dev) != 0) {
 		device_printf(dev, "unable to reinitialize the mixer\n");
+		snd_mtxunlock(sc->lock);
 		return ENXIO;
 	}
 
@@ -879,6 +938,8 @@ als_pci_resume(device_t dev)
 	if (sc->rch.dma_was_active) {
 		als_capture_start(&sc->rch);
 	}
+
+	snd_mtxunlock(sc->lock);
 	return 0;
 }