initial import of NetBSD tree

1 files changed, 82 insertions, 0 deletions

diff --git a/sys/arch/sparc/sparc/vaddrs.h b/sys/arch/sparc/sparc/vaddrs.h
new file mode 100644
index 00000000000..e6d02bf0c95
--- /dev/null
+++ b/sys/arch/sparc/sparc/vaddrs.h
@@ -0,0 +1,82 @@
+/*	$NetBSD: vaddrs.h,v 1.5 1994/12/06 08:34:14 deraadt Exp $ */
+
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Lawrence Berkeley Laboratory.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    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.
+ *
+ *	@(#)vaddrs.h	8.1 (Berkeley) 6/11/93
+ */
+
+/*
+ * Special (fixed) virtual addresses on the SPARC.
+ *
+ * IO virtual space begins at 0xfe000000 (a segment boundary) and
+ * continues up to the DMVA edge at 0xff000000.  (The upper all-1s
+ * byte is special since some of the hardware supplies this to pad
+ * a 24-bit address space out to 32 bits.  This is a legacy of the
+ * IBM PC AT bus, actually, just so you know who to blame.)
+ *
+ * We reserve several pages at the base of our IO virtual space
+ * for `oft-used' devices which must be present anyway in order to
+ * configure.  In particular, we want the counter-timer register and
+ * the Zilog ZSCC serial port chips to be mapped at fixed VAs to make
+ * microtime() and the zs hardware interrupt handlers faster.
+ *
+ * Ideally, we should map the interrupt enable register here as well,
+ * but that would require allocating pmegs in locore.s, so instead we
+ * use one of the two `wasted' pages at KERNBASE+2*NBPG (see locore.s).
+ */
+
+#ifndef IODEV_0
+#define	IODEV_0	0xfe000000	/* must match VM_MAX_KERNEL_ADDRESS */
+
+#define	TIMERREG_VA	(IODEV_0)
+#define	ZS0_VA		(IODEV_0 + 1*NBPG)
+#define	ZS1_VA		(IODEV_0 + 2*NBPG)
+#define	AUXREG_VA	(IODEV_0 + 3*NBPG)
+#define	TMPMAP_VA	(IODEV_0 + 4*NBPG)
+#define	MSGBUF_VA	(IODEV_0 + 5*NBPG)
+#define	IODEV_BASE	(IODEV_0 + 6*NBPG)
+#define	IODEV_END	0xff000000		/* 16 MB of iospace */
+
+#define	DVMA_BASE	0xfff00000
+#define	DVMA_END	0xfffc0000
+
+#endif /* IODEV_0 */