import newer wscons source from netbsd.

art@ said it will make his life easier in alpha
rhands@ said it is not used in powerpc for now
bjc@ said that it would make vax port easier
mickey@ said other platforms can use it, and it's faster

1 files changed, 118 insertions, 0 deletions

diff --git a/sys/dev/wscons/wseventvar.h b/sys/dev/wscons/wseventvar.h
new file mode 100644
index 00000000000..e613db4018b
--- /dev/null
+++ b/sys/dev/wscons/wseventvar.h
@@ -0,0 +1,118 @@
+/* $OpenBSD: wseventvar.h,v 1.1 2000/05/16 23:49:12 mickey Exp $ */
+/* $NetBSD: wseventvar.h,v 1.1 1998/03/22 14:24:03 drochner Exp $ */
+
+/*
+ * Copyright (c) 1996, 1997 Christopher G. Demetriou.  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 Christopher G. Demetriou
+ *	for the NetBSD Project.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without 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.
+ */
+
+/*
+ * 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.
+ *
+ *	@(#)event_var.h	8.1 (Berkeley) 6/11/93
+ */
+
+/*
+ * Internal "wscons_event" queue 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 or similar devices.
+ */
+
+/* WSEVENT_QSIZE should be a power of two so that `%' is fast */
+#define	WSEVENT_QSIZE	256	/* may need tuning; this uses 2k */
+
+struct wseventvar {
+	u_int	get;		/* get (read) index (modified synchronously) */
+	volatile u_int put;	/* put (write) index (modified by interrupt) */
+	struct selinfo sel;	/* process selecting */
+	struct proc *io;	/* process that opened queue (can get SIGIO) */
+	int	wanted;		/* wake up on input ready */
+	int	async;		/* send SIGIO on input ready */
+	struct wscons_event *q;	/* circular buffer (queue) of events */
+};
+
+#define	splwsevent()	spltty()
+
+#define	WSEVENT_WAKEUP(ev) { \
+	selwakeup(&(ev)->sel); \
+	if ((ev)->wanted) { \
+		(ev)->wanted = 0; \
+		wakeup((caddr_t)(ev)); \
+	} \
+	if ((ev)->async) \
+		psignal((ev)->io, SIGIO); \
+}
+
+void	wsevent_init __P((struct wseventvar *));
+void	wsevent_fini __P((struct wseventvar *));
+int	wsevent_read __P((struct wseventvar *, struct uio *, int));
+int	wsevent_poll __P((struct wseventvar *, int, struct proc *));
+
+/*
+ * PWSEVENT is set just above PSOCK, which is just above TTIPRI, on the
+ * theory that mouse and keyboard `user' input should be quick.
+ */
+#define	PWSEVENT	23