From c786dcaf684d111bd92d6d6b0cfe1c56ba3de552 Mon Sep 17 00:00:00 2001
From: Miod Vallat <miod@cvs.openbsd.org>
Date: Mon, 7 Apr 2008 22:53:56 +0000
Subject: Simple com@ioc (with interrupt handling disabled until ioc interrupt
 code is written). Joint work with jsing@

---
 sys/arch/sgi/dev/com_ioc.c | 112 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 sys/arch/sgi/dev/com_ioc.c

(limited to 'sys/arch')

diff --git a/sys/arch/sgi/dev/com_ioc.c b/sys/arch/sgi/dev/com_ioc.c
new file mode 100644
index 00000000000..eae07cb9489
--- /dev/null
+++ b/sys/arch/sgi/dev/com_ioc.c
@@ -0,0 +1,112 @@
+/*	$OpenBSD: com_ioc.c,v 1.1 2008/04/07 22:53:55 miod Exp $ */
+
+/*
+ * Copyright (c) 2001-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
+ *
+ * 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.
+ *
+ * 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.
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/tty.h>
+
+#include <machine/autoconf.h>
+#include <mips64/archtype.h>
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/ic/comreg.h>
+#include <dev/ic/comvar.h>
+#include <dev/ic/ns16550reg.h>
+
+#include <sgi/pci/iocvar.h>
+
+int	com_ioc_probe(struct device *, void *, void *);
+void	com_ioc_attach(struct device *, struct device *, void *);
+
+struct cfattach com_ioc_ca = {
+	sizeof(struct com_softc), com_ioc_probe, com_ioc_attach
+};
+
+int
+com_ioc_probe(struct device *parent, void *match, void *aux)
+{
+	struct ioc_attach_args *iaa = aux;
+	bus_space_tag_t iot = iaa->iaa_memt;
+	bus_space_handle_t ioh;
+	int rv = 0, console;
+
+	console = iot->bus_base + iaa->iaa_base ==
+	    sys_config.cons_iot->bus_base + comconsaddr;
+
+	/* if it's in use as console, it's there. */
+	if (!(console && !comconsattached)) {
+		bus_space_map(iot, iaa->iaa_base, COM_NPORTS, 0, &ioh);
+		rv = comprobe1(iot, ioh);
+	} else
+		rv = 1;
+
+	return rv;
+}
+
+void
+com_ioc_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct com_softc *sc = (void *)self;
+	struct ioc_attach_args *iaa = aux;
+	bus_space_handle_t ioh;
+	int console;
+
+	console = iaa->iaa_memt->bus_base + iaa->iaa_base ==
+	    sys_config.cons_iot->bus_base + comconsaddr;
+
+	sc->sc_hwflags = 0;
+	sc->sc_swflags = 0;
+	sc->sc_iobase = iaa->iaa_base;
+	sc->sc_frequency = 22000000 / 3;
+	sc->sc_iot = iaa->iaa_memt;
+
+	/* if it's in use as console, it's there. */
+	if (!(console && !comconsattached)) {
+		if (bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS, 0,
+		    &ioh)) {
+			printf(": can't map registers\n");
+			return;
+		}
+	} else {
+		ioh = comconsioh;
+		if (comcnattach(sc->sc_iot, sc->sc_iobase, TTYDEF_SPEED,
+		    sc->sc_frequency, (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8))
+			panic("can't setup serial console");
+	}
+
+	sc->sc_ioh = ioh;
+
+	com_attach_subr(sc);
+
+#ifdef notyet
+	ioc_intr_establish(NULL, iaa->iaa_intr, IST_EDGE, IPL_TTY,
+	    comintr, (void *)sc, sc->sc_dev.dv_xname);
+#endif
+}
-- 
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