initial import of NetBSD tree

1 files changed, 88 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/event_var.h b/sys/arch/sun3/dev/event_var.h
new file mode 100644
index 00000000000..463a4eb2f8c
--- /dev/null
+++ b/sys/arch/sun3/dev/event_var.h
@@ -0,0 +1,88 @@
+/*	$NetBSD: event_var.h,v 1.3 1994/11/21 21:30:47 gwr 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.
+ *
+ *	from: @(#)event_var.h	8.1 (Berkeley) 6/11/93
+ *	from: Hdr: event_var.h,v 1.5 92/11/26 01:11:51 torek Exp  (LBL)
+ */
+
+/*
+ * Internal `Firm_event' interface for the keyboard and mouse drivers.
+ * The drivers are expected not to place events in the queue above spltty(),
+ * i.e., are expected to run off serial ports.
+ */
+
+/* EV_QSIZE should be a power of two so that `%' is fast */
+#define	EV_QSIZE	256	/* may need tuning; this uses 2k */
+
+struct evvar {
+	u_int	ev_get;		/* get (read) index (modified synchronously) */
+	volatile u_int ev_put;	/* put (write) index (modified by interrupt) */
+	struct	selinfo ev_sel;	/* process selecting */
+	struct	proc *ev_io;	/* process that opened queue (can get SIGIO) */
+	char	ev_wanted;	/* wake up on input ready */
+	char	ev_async;	/* send SIGIO on input ready */
+	struct	firm_event *ev_q;/* circular buffer (queue) of events */
+};
+
+#define	splev()	spltty()
+
+#define	EV_WAKEUP(ev) { \
+	selwakeup(&(ev)->ev_sel); \
+	if ((ev)->ev_wanted) { \
+		(ev)->ev_wanted = 0; \
+		wakeup((caddr_t)(ev)); \
+	} \
+	if ((ev)->ev_async) \
+		psignal((ev)->ev_io, SIGIO); \
+}
+
+void	ev_init __P((struct evvar *));
+void	ev_fini __P((struct evvar *));
+int	ev_read __P((struct evvar *, struct uio *, int));
+int	ev_select __P((struct evvar *, int, struct proc *));
+
+/*
+ * PEVENT is set just above PSOCK, which is just above TTIPRI, on the
+ * theory that mouse and keyboard `user' input should be quick.
+ */
+#define	PEVENT	23