initial import of NetBSD tree

1 files changed, 189 insertions, 0 deletions

diff --git a/sys/arch/mac68k/dev/asc.c b/sys/arch/mac68k/dev/asc.c
new file mode 100644
index 00000000000..b487e47786b
--- /dev/null
+++ b/sys/arch/mac68k/dev/asc.c
@@ -0,0 +1,189 @@
+/*	$NetBSD: asc.c,v 1.8 1995/09/21 03:36:25 briggs Exp $	*/
+
+/*-
+ * Copyright (C) 1993	Allen K. Briggs, Chris P. Caputo,
+ *			Michael L. Finch, Bradley A. Grantham, and
+ *			Lawrence A. Kesteloot
+ * 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 Alice Group.
+ * 4. The names of the Alice Group or any of its members may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``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 ALICE GROUP 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.
+ */
+
+/*
+ * ASC driver code and asc_ringbell() support
+ */
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <sys/errno.h>
+#include <sys/time.h>
+#include <sys/systm.h>
+#include <sys/param.h>
+#include <sys/device.h>
+#include <machine/cpu.h>
+
+
+/* Global ASC location */
+volatile unsigned char *ASCBase = (unsigned char *) 0x14000;
+
+
+/* bell support data */
+static int bell_freq = 1880;
+static int bell_length = 10;
+static int bell_volume = 100;
+static int bell_ringing = 0;
+
+static int ascprobe __P((struct device *, struct cfdata *, void *));
+static void ascattach __P((struct device *, struct device *, void *));
+extern int matchbyname __P((struct device *, void *, void *));
+
+struct cfdriver asccd =
+{NULL, "asc", matchbyname, ascattach,
+DV_DULL, sizeof(struct device), NULL, 0};
+
+static int
+ascprobe(parent, cf, aux)
+	struct device *parent;
+	struct cfdata *cf;
+	void   *aux;
+{
+	if (strcmp(*((char **) aux), asccd.cd_name))
+		return 0;
+
+	return 1;
+}
+
+
+static void
+ascattach(parent, dev, aux)
+	struct device *parent, *dev;
+	void   *aux;
+{
+	printf(" Apple sound chip.\n");
+
+	ASCBase = IOBase + ASCBase;
+}
+
+int 
+asc_setbellparams(
+    int freq,
+    int length,
+    int volume)
+{
+	/* I only perform these checks for sanity. */
+	/* I suppose someone might want a bell that rings */
+	/* all day, but then the can make kernel mods themselves. */
+
+	if (freq < 10 || freq > 40000)
+		return (EINVAL);
+	if (length < 0 || length > 3600)
+		return (EINVAL);
+	if (volume < 0 || volume > 100)
+		return (EINVAL);
+
+	bell_freq = freq;
+	bell_length = length;
+	bell_volume = volume;
+
+	return (0);
+}
+
+
+int 
+asc_getbellparams(
+    int *freq,
+    int *length,
+    int *volume)
+{
+	*freq = bell_freq;
+	*length = bell_length;
+	*volume = bell_volume;
+
+	return (0);
+}
+
+
+void 
+asc_bellstop(
+    int param)
+{
+	if (bell_ringing > 1000 || bell_ringing < 0)
+		panic("bell got out of synch?????");
+	if (--bell_ringing == 0) {
+		ASCBase[0x801] = 0;
+	}
+	/* disable ASC */
+}
+
+
+int 
+asc_ringbell()
+{
+	int     i;
+	unsigned long freq;
+
+	if (bell_ringing == 0) {
+		for (i = 0; i < 0x800; i++)
+			ASCBase[i] = 0;
+
+		for (i = 0; i < 256; i++) {
+			ASCBase[i] = i / 4;
+			ASCBase[i + 512] = i / 4;
+			ASCBase[i + 1024] = i / 4;
+			ASCBase[i + 1536] = i / 4;
+		}		/* up part of wave, four voices ? */
+		for (i = 0; i < 256; i++) {
+			ASCBase[i + 256] = 0x3f - (i / 4);
+			ASCBase[i + 768] = 0x3f - (i / 4);
+			ASCBase[i + 1280] = 0x3f - (i / 4);
+			ASCBase[i + 1792] = 0x3f - (i / 4);
+		}		/* down part of wave, four voices ? */
+
+		/* Fix this.  Need to find exact ASC sampling freq */
+		freq = 65536 * bell_freq / 466;
+
+		/* printf("beep: from %d, %02x %02x %02x %02x\n",
+		 * cur_beep.freq, (freq >> 24) & 0xff, (freq >> 16) & 0xff,
+		 * (freq >> 8) & 0xff, (freq) & 0xff); */
+		for (i = 0; i < 8; i++) {
+			ASCBase[0x814 + 8 * i] = (freq >> 24) & 0xff;
+			ASCBase[0x815 + 8 * i] = (freq >> 16) & 0xff;
+			ASCBase[0x816 + 8 * i] = (freq >> 8) & 0xff;
+			ASCBase[0x817 + 8 * i] = (freq) & 0xff;
+		}		/* frequency; should put cur_beep.freq in here
+				 * somewhere. */
+
+		ASCBase[0x807] = 3;	/* 44 ? */
+		ASCBase[0x806] = 255 * bell_volume / 100;
+		ASCBase[0x805] = 0;
+		ASCBase[0x80f] = 0;
+		ASCBase[0x802] = 2;	/* sampled */
+		ASCBase[0x801] = 2;	/* enable sampled */
+	}
+	bell_ringing++;
+	timeout((void *) asc_bellstop, 0, bell_length);
+}