initial import of NetBSD tree

1 files changed, 319 insertions, 0 deletions

diff --git a/sys/dev/isa/sb.c b/sys/dev/isa/sb.c
new file mode 100644
index 00000000000..a2715cf53b1
--- /dev/null
+++ b/sys/dev/isa/sb.c
@@ -0,0 +1,319 @@
+/*	$NetBSD: sb.c,v 1.27 1995/07/19 19:58:53 brezak Exp $	*/
+
+/*
+ * Copyright (c) 1991-1993 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the Computer Systems
+ *	Engineering Group at Lawrence Berkeley Laboratory.
+ * 4. Neither the name of the University nor of the Laboratory may be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/syslog.h>
+#include <sys/device.h>
+#include <sys/proc.h>
+
+#include <machine/cpu.h>
+#include <machine/pio.h>
+
+#include <sys/audioio.h>
+#include <dev/audio_if.h>
+#include <dev/mulaw.h>
+
+#include <dev/isa/isavar.h>
+#include <dev/isa/isadmavar.h>
+
+#include <dev/isa/sbdspvar.h>
+#include <dev/isa/sbreg.h>
+
+#ifdef AUDIO_DEBUG
+extern void Dprintf __P((const char *, ...));
+#define DPRINTF(x)	if (sbdebug) Dprintf x
+int	sbdebug = 0;
+#else
+#define DPRINTF(x)
+#endif
+
+struct sb_softc {
+	struct	device sc_dev;		/* base device */
+	struct	isadev sc_id;		/* ISA device */
+	void	*sc_ih;			/* interrupt vectoring */
+
+	struct	sbdsp_softc sc_sbdsp;
+};
+
+int	sbprobe();
+void	sbattach __P((struct device *, struct device *, void *));
+
+struct cfdriver sbcd = {
+	NULL, "sb", sbprobe, sbattach, DV_DULL, sizeof(struct sbdsp_softc)
+};
+
+struct audio_device sb_device = {
+	"SoundBlaster",
+	"x",
+	"sb"
+};
+
+int	sbopen __P((dev_t, int));
+
+int	sbprobe();
+void	sbattach();
+
+int	sb_getdev __P((void *, struct audio_device *));
+
+/*
+ * Define our interface to the higher level audio driver.
+ */
+
+struct audio_hw_if sb_hw_if = {
+	sbopen,
+	sbdsp_close,
+	NULL,
+	sbdsp_set_in_sr,
+	sbdsp_get_in_sr,
+	sbdsp_set_out_sr,
+	sbdsp_get_out_sr,
+	sbdsp_query_encoding,
+	sbdsp_set_encoding,
+	sbdsp_get_encoding,
+	sbdsp_set_precision,
+	sbdsp_get_precision,
+	sbdsp_set_channels,
+	sbdsp_get_channels,
+	sbdsp_round_blocksize,
+	sbdsp_set_out_port,
+	sbdsp_get_out_port,
+	sbdsp_set_in_port,
+	sbdsp_get_in_port,
+	sbdsp_commit_settings,
+	sbdsp_get_silence,
+	mulaw_expand,
+	mulaw_compress,
+	sbdsp_dma_output,
+	sbdsp_dma_input,
+	sbdsp_haltdma,
+	sbdsp_haltdma,
+	sbdsp_contdma,
+	sbdsp_contdma,
+	sbdsp_speaker_ctl,
+	sb_getdev,
+	sbdsp_setfd,
+	sbdsp_mixer_set_port,
+	sbdsp_mixer_get_port,
+	sbdsp_mixer_query_devinfo,
+	0,	/* not full-duplex */
+	0
+};
+
+/*
+ * Probe / attach routines.
+ */
+
+/*
+ * Probe for the soundblaster hardware.
+ */
+int
+sbprobe(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	register struct sbdsp_softc *sc = (void *)self;
+	register struct isa_attach_args *ia = aux;
+	register u_short iobase = ia->ia_iobase;
+	static u_char irq_conf[11] = {
+	    -1, -1, 0x01, -1, -1, 0x02, -1, 0x04, -1, 0x01, 0x08
+	};
+
+	if (!SB_BASE_VALID(ia->ia_iobase)) {
+		printf("sb: configured iobase %d invalid\n", ia->ia_iobase);
+		return 0;
+	}
+	sc->sc_iobase = iobase;
+	if (sbdsp_probe(sc) == 0) {
+		DPRINTF(("sb: sbdsp probe failed\n"));
+		return 0;
+	}
+		
+	/*
+	 * Cannot auto-discover DMA channel.
+	 */
+	if (ISSBPROCLASS(sc)) {
+		if (!SBP_DRQ_VALID(ia->ia_drq)) {
+			printf("sb: configured dma chan %d invalid\n", ia->ia_drq);
+			return 0;
+		}
+		if (ISSB16CLASS(sc)) {
+			sbdsp_mix_write(sc, SBP_SET_DRQ, 
+					1 << ia->ia_drq);
+		}
+	}
+	else {
+		if (!SB_DRQ_VALID(ia->ia_drq)) {
+			printf("sb: configured dma chan %d invalid\n", ia->ia_drq);
+			return 0;
+		}
+	}
+	
+#ifdef NEWCONFIG
+	/*
+	 * If the IRQ wasn't compiled in, auto-detect it.
+	 */
+	if (ia->ia_irq == IRQUNK) {
+		ia->ia_irq = isa_discoverintr(sbforceintr, aux);
+		sbdsp_reset(sc);
+		if (ISSBPROCLASS(sc)) {
+			if (!SBP_IRQ_VALID(ia->ia_irq)) {
+				printf("sb: couldn't auto-detect interrupt");
+				return 0;
+			}
+		}
+		else {
+			if (!SB_IRQ_VALID(ia->ia_irq)) {
+				printf("sb: couldn't auto-detect interrupt");
+				return 0;
+			}
+		}
+	} else
+#endif
+	if (ISSBPROCLASS(sc)) {
+		if (!SBP_IRQ_VALID(ia->ia_irq)) {
+			printf("sb: configured irq %d invalid\n", ia->ia_irq);
+			return 0;
+		}
+		if (ISSB16CLASS(sc)) {
+			sbdsp_mix_write(sc, SBP_SET_IRQ, 
+					irq_conf[ia->ia_irq]);
+		}
+	}
+	else {
+		if (!SB_IRQ_VALID(ia->ia_irq)) {
+			printf("sb: configured irq %d invalid\n", ia->ia_irq);
+			return 0;
+		}
+	}
+
+	sc->sc_irq = ia->ia_irq;
+	sc->sc_drq = ia->ia_drq;
+	
+	if (ISSBPROCLASS(sc))
+		ia->ia_iosize = SBP_NPORT;
+	else
+		ia->ia_iosize = SB_NPORT;
+	return 1;
+}
+
+#ifdef NEWCONFIG
+void
+sbforceintr(aux)
+	void *aux;
+{
+	static char dmabuf;
+	struct isa_attach_args *ia = aux;
+	u_short iobase = ia->ia_iobase;
+
+	/*
+	 * Set up a DMA read of one byte.
+	 * XXX Note that at this point we haven't called 
+	 * at_setup_dmachan().  This is okay because it just
+	 * allocates a buffer in case it needs to make a copy,
+	 * and it won't need to make a copy for a 1 byte buffer.
+	 * (I think that calling at_setup_dmachan() should be optional;
+	 * if you don't call it, it will be called the first time
+	 * it is needed (and you pay the latency).  Also, you might
+	 * never need the buffer anyway.)
+	 */
+	at_dma(B_READ, &dmabuf, 1, ia->ia_drq);
+	if (sbdsp_wdsp(iobase, SB_DSP_RDMA) == 0) {
+		(void)sbdsp_wdsp(iobase, 0);
+		(void)sbdsp_wdsp(iobase, 0);
+	}
+}
+#endif
+
+/*
+ * Attach hardware to driver, attach hardware driver to audio
+ * pseudo-device driver .
+ */
+void
+sbattach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	register struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
+	struct isa_attach_args *ia = (struct isa_attach_args *)aux;
+	register u_short iobase = ia->ia_iobase;
+	int err;
+	
+	sc->sc_ih = isa_intr_establish(ia->ia_irq, ISA_IST_EDGE, ISA_IPL_AUDIO,
+				       sbdsp_intr, sc);
+
+	sbdsp_attach(sc);
+
+	sprintf(sb_device.version, "%d.%d", 
+		SBVER_MAJOR(sc->sc_model),
+		SBVER_MINOR(sc->sc_model));
+
+	if ((err = audio_hardware_attach(&sb_hw_if, sc)) != 0)
+		printf("sb: could not attach to audio pseudo-device driver (%d)\n", err);
+}
+
+/*
+ * Various routines to interface to higher level audio driver
+ */
+
+int
+sbopen(dev, flags)
+    dev_t dev;
+    int flags;
+{
+    struct sbdsp_softc *sc;
+    int unit = AUDIOUNIT(dev);
+    
+    if (unit >= sbcd.cd_ndevs)
+	return ENODEV;
+    
+    sc = sbcd.cd_devs[unit];
+    if (!sc)
+	return ENXIO;
+    
+    return sbdsp_open(sc, dev, flags);
+}
+
+int
+sb_getdev(addr, retp)
+	void *addr;
+	struct audio_device *retp;
+{
+	*retp = sb_device;
+	return 0;
+}