initial import of NetBSD tree

1 files changed, 64 insertions, 0 deletions

diff --git a/sys/arch/mvme68k/dev/scc.h b/sys/arch/mvme68k/dev/scc.h
new file mode 100644
index 00000000000..4d94f6c3fde
--- /dev/null
+++ b/sys/arch/mvme68k/dev/scc.h
@@ -0,0 +1,64 @@
+/*	$NetBSD: scc.h,v 1.1.1.1 1995/07/25 23:12:07 chuck Exp $	*/
+
+/*
+ * Copyright (c) 1993 Paul Mackerras.
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+/*
+ * SCC I/O register definitions
+ */
+
+#define PCLK_FREQ	8333333		/* XXX */
+
+struct scc {
+	unsigned char cr;
+	unsigned char dr;
+};
+
+struct sccregs {
+	volatile struct scc *s_adr;
+	unsigned char s_val[16];
+};
+
+#define ZREAD0(scc)	((scc)->s_adr->cr)
+#define ZREAD(scc, n)	((scc)->s_adr->cr = n, (scc)->s_adr->cr)
+#define ZREADD(scc)	((scc)->s_adr->dr)
+
+#define ZWRITE0(scc, v)	((scc)->s_adr->cr = v)
+#define ZWRITE(scc, n, v) (ZWRITE0(scc, n), ZWRITE0(scc, (scc)->s_val[n] = v))
+#define ZWRITED(scc, v)	((scc)->s_adr->dr = v)
+
+#define ZBIS(scc, n, v)	(ZWRITE(scc, n, (scc)->s_val[n] | (v)))
+#define ZBIC(scc, n, v)	(ZWRITE(scc, n, (scc)->s_val[n] & ~(v)))
+
+#define SCC_RXFULL	1	/* bits in rr0 */
+#define SCC_TXRDY	4
+#define SCC_DCD		8
+#define SCC_CTS		0x20
+
+#define SCC_RCVEN	1	/* bits in wr3 */
+
+#define SCC_RTS		2	/* bits in wr5 */
+#define SCC_DTR		0x80