From f07a4c844da9f0ecae5bbee1ab94be56505f26f7 Mon Sep 17 00:00:00 2001
From: Thomas Bushnell <thomas@gnu.org>
Date: Tue, 25 Feb 1997 21:28:37 +0000
Subject: Initial source

---
 chips/audio_config.h | 130 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 chips/audio_config.h

(limited to 'chips/audio_config.h')

diff --git a/chips/audio_config.h b/chips/audio_config.h
new file mode 100644
index 0000000..bd2c0a0
--- /dev/null
+++ b/chips/audio_config.h
@@ -0,0 +1,130 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1992 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *  Here platform specific code to define sample_t & co
+ *  [to cope with weird DMA engines], and other customs
+ */
+#ifdef	FLAMINGO
+#define splaudio	splbio
+#define	sample_t	unsigned char	/* later */
+#define	samples_to_chars	bcopy
+#define	chars_to_samples	bcopy
+/* Sparse space ! */
+typedef struct {
+	volatile unsigned long	cr;	/* command register (wo) */
+/*#define ir cr				/* interrupt register (ro) */
+	volatile unsigned long	dr;	/* data register (rw) */
+	volatile unsigned long	dsr1;	/* D-channel status register 1 (ro) */
+	volatile unsigned long	der;	/* D-channel error register (ro) */
+	volatile unsigned long	dctb;	/* D-channel transmit register (wo) */
+/*#define dcrb dctb			/* D-channel receive register (ro) */
+	volatile unsigned long	bbtb;	/* Bb-channel transmit register (wo) */
+/*#define bbrb bbtb			/* Bb-channel receive register (ro) */
+	volatile unsigned long	bctb;	/* Bc-channel transmit register (wo)*/
+/*#define bcrb bctb			/* Bc-channel receive register (ro) */
+	volatile unsigned long	dsr2;	/* D-channel status register 2 (ro) */
+} amd79c30_padded_regs_t;
+
+/* give the chip 400ns in between accesses */
+#define	read_reg(r,v)				\
+	{ (v) = ((r) >> 8) & 0xff; delay(1); }
+
+#define write_reg(r,v)				\
+	{ (r) = (((v) & 0xff) << 8) |		\
+		 0x200000000L; /*bytemask*/	\
+		delay(1); wbflush();		\
+	}
+
+/* Write 16 bits of data from variable v to the data port of the audio chip */
+#define	WAMD16(regs, v)				\
+	{ write_reg((regs)->dr,v);		\
+	  write_reg((regs)->dr,v>>8); }
+
+#define mb() wbflush()
+
+#endif	/* FLAMINGO */
+
+
+#ifdef	MAXINE
+#define splaudio	splhigh
+typedef struct {
+	volatile unsigned char	cr;	/* command register (wo) */
+/*#define ir cr				/* interrupt register (ro) */
+	char				pad0[63];
+	volatile unsigned char	dr;	/* data register (rw) */
+	char				pad1[63];
+	volatile unsigned char	dsr1;	/* D-channel status register 1 (ro) */
+	char				pad2[63];
+	volatile unsigned char	der;	/* D-channel error register (ro) */
+	char				pad3[63];
+	volatile unsigned char	dctb;	/* D-channel transmit register (wo) */
+/*#define dcrb dctb			/* D-channel receive register (ro) */
+	char				pad4[63];
+	volatile unsigned char	bbtb;	/* Bb-channel transmit register (wo) */
+/*#define bbrb bbtb			/* Bb-channel receive register (ro) */
+	char				pad5[63];
+	volatile unsigned char	bctb;	/* Bc-channel transmit register (wo)*/
+/*#define bcrb bctb			/* Bc-channel receive register (ro) */
+	char				pad6[63];
+	volatile unsigned char	dsr2;	/* D-channel status register 2 (ro) */
+	char				pad7[63];
+} amd79c30_padded_regs_t;
+
+/* give the chip 400ns in between accesses */
+#define	read_reg(r,v)				\
+	{ (v) = (r); delay(1); }
+
+#define write_reg(r,v)				\
+	{ (r) = (v); delay(1); wbflush(); }
+
+/* Write 16 bits of data from variable v to the data port of the audio chip */
+#define	WAMD16(regs, v)				\
+	{ write_reg((regs)->dr,v);		\
+	  write_reg((regs)->dr,v>>8); }
+
+#define mb()
+
+#endif	/* MAXINE */
+
+
+#ifndef	sample_t
+#define	sample_t	unsigned char
+#define	samples_to_chars	bcopy
+#define	chars_to_samples	bcopy
+#endif
+
+/*
+ * More architecture-specific customizations
+ */
+#ifdef	alpha
+#define sample_rpt_int(x)	(((x)<<24)|((x)<<16)|((x)<<8)|((x)<<0))
+#define sample_rpt_long(x)	((sample_rpt_int(x)<<32)|sample_rpt_int(x))
+#endif
+
+#ifndef	sample_rpt_long
+#define sample_rpt_long(x)	(((x)<<24)|((x)<<16)|((x)<<8)|((x)<<0))
+#endif
+
-- 
cgit v1.2.3