sync to 0616, retaining local diffs

1 files changed, 112 insertions, 0 deletions

diff --git a/sys/arch/alpha/tc/mcclock_ioasic.c b/sys/arch/alpha/tc/mcclock_ioasic.c
new file mode 100644
index 00000000000..340a75f82c1
--- /dev/null
+++ b/sys/arch/alpha/tc/mcclock_ioasic.c
@@ -0,0 +1,112 @@
+/*	$NetBSD: mcclock_ioasic.c,v 1.2 1996/04/17 22:22:58 cgd Exp $	*/
+
+/*
+ * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Chris G. Demetriou
+ *
+ * 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 the
+ * rights to redistribute these changes.
+ */
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <alpha/alpha/clockvar.h>
+#include <alpha/alpha/mcclockvar.h>
+#include <dev/ic/mc146818reg.h>
+#include <dev/tc/tcreg.h>
+#include <dev/tc/tcvar.h> 
+#include <dev/tc/ioasicvar.h>                   /* XXX */
+
+struct mcclock_ioasic_clockdatum {
+	u_char	datum;
+	char	pad[3];
+};
+
+struct mcclock_ioasic_softc {
+	struct mcclock_softc	sc_mcclock;
+
+	struct mcclock_ioasic_clockdatum *sc_dp;
+};
+
+int	mcclock_ioasic_match __P((struct device *, void *, void *));
+void	mcclock_ioasic_attach __P((struct device *, struct device *, void *));
+
+struct cfattach mcclock_ioasic_ca = {
+	sizeof (struct mcclock_ioasic_softc), mcclock_ioasic_match,
+	    mcclock_ioasic_attach, 
+};
+
+void	mcclock_ioasic_write __P((struct mcclock_softc *, u_int, u_int));
+u_int	mcclock_ioasic_read __P((struct mcclock_softc *, u_int));
+
+const struct mcclock_busfns mcclock_ioasic_busfns = {
+	mcclock_ioasic_write, mcclock_ioasic_read,
+};
+
+int
+mcclock_ioasic_match(parent, match, aux)
+	struct device *parent;
+	void *match, *aux;
+{
+	struct ioasicdev_attach_args *d = aux;
+
+	if (strncmp("TOY_RTC ", d->iada_modname, TC_ROM_LLEN))
+		return (0);
+
+	return (1);
+}
+
+void
+mcclock_ioasic_attach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct ioasicdev_attach_args *ioasicdev = aux;
+	struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)self;
+
+	sc->sc_dp = (struct mcclock_ioasic_clockdatum *)ioasicdev->iada_addr;
+
+	mcclock_attach(&sc->sc_mcclock, &mcclock_ioasic_busfns);
+}
+
+void
+mcclock_ioasic_write(dev, reg, datum)
+	struct mcclock_softc *dev;
+	u_int reg, datum;
+{
+	struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev;
+
+	sc->sc_dp[reg].datum = datum;
+}
+
+u_int
+mcclock_ioasic_read(dev, reg)
+	struct mcclock_softc *dev;
+	u_int reg;
+{
+	struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev;
+
+	return (sc->sc_dp[reg].datum);
+}