Glue for com at ebus. From NetBSD, hacked to fit our com.

1 files changed, 171 insertions, 0 deletions

diff --git a/sys/arch/sparc64/dev/com_ebus.c b/sys/arch/sparc64/dev/com_ebus.c
new file mode 100644
index 00000000000..1344f13c3a5
--- /dev/null
+++ b/sys/arch/sparc64/dev/com_ebus.c
@@ -0,0 +1,171 @@
+/*	$OpenBSD: com_ebus.c,v 1.1 2001/09/29 03:13:49 art Exp $	*/
+/*	$NetBSD: com_ebus.c,v 1.6 2001/07/24 19:27:10 eeh Exp $	*/
+
+/*
+ * Copyright (c) 1999, 2000 Matthew R. Green
+ * 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. 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.
+ */
+
+/*
+ * NS Super I/O PC87332VLJ "com" to ebus attachment
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/tty.h>
+#include <sys/conf.h>
+
+#include <machine/bus.h>
+#include <machine/autoconf.h>
+#include <machine/openfirm.h>
+
+#include <sparc64/dev/ebusreg.h>
+#include <sparc64/dev/ebusvar.h>
+
+#include <dev/cons.h>
+#include <dev/ic/comvar.h>
+#include <dev/sun/kbd_ms_ttyvar.h>
+
+#include "kbd.h"
+#include "ms.h"
+
+cdev_decl(com); /* XXX this belongs elsewhere */
+
+int	com_ebus_match __P((struct device *, void *, void *));
+void	com_ebus_attach __P((struct device *, struct device *, void *));
+int	com_ebus_isconsole __P((int node));
+
+struct cfattach com_ebus_ca = {
+	sizeof(struct com_softc), com_ebus_match, com_ebus_attach
+};
+
+static char *com_names[] = {
+	"su",
+	"su_pnp",
+	NULL
+};
+
+int
+com_ebus_match(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct ebus_attach_args *ea = aux;
+	int i;
+
+	for (i=0; com_names[i]; i++)
+		if (strcmp(ea->ea_name, com_names[i]) == 0)
+			return (1);
+
+	if (strcmp(ea->ea_name, "serial") == 0) {
+		char compat[80];
+
+		/* Could be anything. */
+		if ((i = OF_getproplen(ea->ea_node, "compatible")) &&
+			OF_getprop(ea->ea_node, "compatible", compat,
+				sizeof(compat)) == i) {
+			if (strcmp(compat, "su16550") == 0 || 
+				strcmp(compat, "su") == 0) {
+				return (1);
+			}
+		}
+	}
+	return (0);
+}
+
+int
+com_ebus_isconsole(node)
+	int node;
+{
+	if (node == OF_instance_to_package(OF_stdin())) {
+		return (1);
+	}
+
+	if (node == OF_instance_to_package(OF_stdout())) { 
+		return (1);
+	}
+	return (0);
+}
+
+/* XXXART - was 1846200 */
+#define BAUD_BASE       (1843200)
+
+void
+com_ebus_attach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct com_softc *sc = (void *)self;
+	struct ebus_attach_args *ea = aux;
+	int i;
+
+	sc->sc_iot = ea->ea_bustag;
+	sc->sc_iobase = EBUS_PADDR_FROM_REG(&ea->ea_regs[0]);
+	/*
+	 * Addresses that shoud be supplied by the prom:
+	 *	- normal com registers
+	 *	- ns873xx configuration registers
+	 *	- DMA space
+	 * The `com' driver does not use DMA accesses, so we can
+	 * ignore that for now.  We should enable the com port in
+	 * the ns873xx registers here. XXX
+	 *
+	 * Use the prom address if there.
+	 */
+	if (ea->ea_nvaddrs)
+		sc->sc_ioh = (bus_space_handle_t)ea->ea_vaddrs[0];
+	else if (ebus_bus_map(sc->sc_iot, 0,
+			      EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
+			      ea->ea_regs[0].size,
+			      BUS_SPACE_MAP_LINEAR,
+			      0, &sc->sc_ioh) != 0) {
+		printf(": can't map register space\n");
+                return;
+	}
+	sc->sc_hwflags = 0;
+	sc->sc_swflags = 0;
+	sc->sc_frequency = BAUD_BASE;
+
+	for (i = 0; i < ea->ea_nintrs; i++)
+		bus_intr_establish(ea->ea_bustag, ea->ea_intrs[i],
+		    IPL_TTY, 0, comintr, sc);
+
+	if (com_ebus_isconsole(ea->ea_node)) {
+		comconsioh = sc->sc_ioh;
+		/* Attach com as the console. */
+		if (comcnattach(sc->sc_iot, sc->sc_iobase, 9600,
+		    sc->sc_frequency,
+		    ((TTYDEF_CFLAG & ~(CSIZE | PARENB))|CREAD | CS8 | HUPCL))) {
+			printf("Error: comcnattach failed\n");
+		}
+	}
+	/* Now attach the driver */
+	com_attach_subr(sc);
+}
+