Blind partial support for IOC4 chip, found on IO8 and IO9 base I/O boards on

Origin 350 and Tezro systems. While this chip provides serial ports, an ATAPI
interface and a PS/2 keyboard and mouse interface, this code currently only
attempts to support the serial ports.

1 files changed, 123 insertions, 0 deletions

diff --git a/sys/arch/sgi/dev/com_iof.c b/sys/arch/sgi/dev/com_iof.c
new file mode 100644
index 00000000000..66e61bfc47a
--- /dev/null
+++ b/sys/arch/sgi/dev/com_iof.c
@@ -0,0 +1,123 @@
+/*	$OpenBSD: com_iof.c,v 1.1 2009/08/18 19:34:15 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 <machine/bus.h>
+
+#include <dev/ic/comreg.h>
+#include <dev/ic/comvar.h>
+#include <dev/ic/ns16550reg.h>
+
+#include <sgi/pci/iofvar.h>
+
+int	com_iof_probe(struct device *, void *, void *);
+void	com_iof_attach(struct device *, struct device *, void *);
+
+struct cfattach com_iof_ca = {
+	sizeof(struct com_softc), com_iof_probe, com_iof_attach
+};
+
+extern struct cfdriver com_cd;
+
+int
+com_iof_probe(struct device *parent, void *match, void *aux)
+{
+	struct iof_attach_args *iaa = aux;
+	bus_space_tag_t iot = iaa->iaa_memt;
+	bus_space_handle_t ioh;
+	int rv = 0, console;
+
+	if (strcmp(iaa->iaa_name, com_cd.cd_name) != 0)
+		return 0;
+
+	console = iaa->iaa_memh + iaa->iaa_base ==
+	    comconsiot->bus_base + comconsaddr;
+
+	/* if it's in use as console, it's there. */
+	if (!(console && !comconsattached)) {
+		if (bus_space_subregion(iot, iaa->iaa_memh,
+		    iaa->iaa_base, COM_NPORTS, &ioh) == 0)
+			rv = comprobe1(iot, ioh);
+	} else
+		rv = 1;
+
+	return rv;
+}
+
+void
+com_iof_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct com_softc *sc = (void *)self;
+	struct iof_attach_args *iaa = aux;
+	bus_space_handle_t ioh;
+	int console;
+
+	console = iaa->iaa_memh + iaa->iaa_base ==
+	    comconsiot->bus_base + comconsaddr;
+
+	sc->sc_hwflags = 0;
+	sc->sc_swflags = 0;
+	sc->sc_frequency = 22000000 / 3;
+
+	/* if it's in use as console, it's there. */
+	if (!(console && !comconsattached)) {
+		sc->sc_iot = iaa->iaa_memt;
+		sc->sc_iobase = iaa->iaa_base;
+
+		if (bus_space_subregion(iaa->iaa_memt, iaa->iaa_memh,
+		    iaa->iaa_base, COM_NPORTS, &ioh) != 0) {
+			printf(": can't map registers\n");
+			return;
+		}
+	} else {
+		/*
+		 * If we are the console, reuse the existing bus_space
+		 * information, so that comcnattach() invokes bus_space_map()
+		 * with correct parameters.
+		 */
+		sc->sc_iot = comconsiot;
+		sc->sc_iobase = comconsaddr;
+
+		if (comcnattach(sc->sc_iot, sc->sc_iobase, TTYDEF_SPEED,
+		    sc->sc_frequency, (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8))
+			panic("can't setup serial console");
+		ioh = comconsioh;
+	}
+
+	sc->sc_ioh = ioh;
+
+	com_attach_subr(sc);
+
+	iof_intr_establish(parent, iaa->iaa_dev, IPL_TTY, comintr,
+	    (void *)sc, sc->sc_dev.dv_xname);
+}