1 files changed, 197 insertions, 0 deletions

diff --git a/sys/dev/pcf/envctrl.c b/sys/dev/pcf/envctrl.c
new file mode 100644
index 000000000000..25a163c77902
--- /dev/null
+++ b/sys/dev/pcf/envctrl.c
@@ -0,0 +1,197 @@
+/*-
+ * Copyright (c) 2004 Joerg Wunsch
+ *
+ * derived from sys/i386/isa/pcf.c which is:
+ *
+ * Copyright (c) 1998 Nicolas Souchu, Marc Bouget
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Device specific driver for the SUNW,envctrl device found on some
+ * UltraSPARC Sun systems.  This device is a Philips PCF8584 sitting
+ * on the Ebus2.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/resource.h>
+#include <sys/uio.h>
+
+#include <dev/ofw/ofw_bus.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <sys/rman.h>
+
+#include <dev/iicbus/iiconf.h>
+#include <dev/pcf/pcfvar.h>
+#include "iicbus_if.h"
+
+#undef PCF_DEFAULT_ADDR
+#define PCF_DEFAULT_ADDR	0x55 /* SUNW,pcf default */
+
+static int envctrl_probe(device_t);
+static int envctrl_attach(device_t);
+static int envctrl_detach(device_t);
+
+static device_method_t envctrl_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_probe,		envctrl_probe),
+	DEVMETHOD(device_attach,	envctrl_attach),
+	DEVMETHOD(device_detach,	envctrl_detach),
+
+	/* iicbus interface */
+	DEVMETHOD(iicbus_callback,	iicbus_null_callback),
+	DEVMETHOD(iicbus_repeated_start, pcf_repeated_start),
+	DEVMETHOD(iicbus_start,		pcf_start),
+	DEVMETHOD(iicbus_stop,		pcf_stop),
+	DEVMETHOD(iicbus_write,		pcf_write),
+	DEVMETHOD(iicbus_read,		pcf_read),
+	DEVMETHOD(iicbus_reset,		pcf_rst_card),
+	{ 0, 0 }
+};
+
+static devclass_t envctrl_devclass;
+
+static driver_t envctrl_driver = {
+	"envctrl",
+	envctrl_methods,
+	sizeof(struct pcf_softc),
+};
+
+static int
+envctrl_probe(device_t dev)
+{
+
+	if (strcmp("SUNW,envctrl", ofw_bus_get_name(dev)) == 0) {
+		device_set_desc(dev, "EBus SUNW,envctrl");
+		return (0);
+	}
+	return (ENXIO);
+}
+
+static int
+envctrl_attach(device_t dev)
+{
+	struct pcf_softc *sc;
+	int rv = ENXIO;
+
+	sc = DEVTOSOFTC(dev);
+	bzero(sc, sizeof(struct pcf_softc));
+
+	/* IO port is mandatory */
+	sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+						&sc->rid_ioport, RF_ACTIVE);
+	if (sc->res_ioport == 0) {
+		device_printf(dev, "cannot reserve I/O port range\n");
+		goto error;
+	}
+	sc->bt_ioport = rman_get_bustag(sc->res_ioport);
+	sc->bh_ioport = rman_get_bushandle(sc->res_ioport);
+
+	sc->pcf_flags = device_get_flags(dev);
+
+	if (!(sc->pcf_flags & IIC_POLLED)) {
+		sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->rid_irq,
+						     RF_ACTIVE);
+		if (sc->res_irq == 0) {
+			device_printf(dev, "can't reserve irq, polled mode.\n");
+			sc->pcf_flags |= IIC_POLLED;
+		}
+	}
+
+	/* reset the chip */
+	pcf_rst_card(dev, IIC_FASTEST, PCF_DEFAULT_ADDR, NULL);
+
+	rv = BUS_SETUP_INTR(device_get_parent(dev), dev, sc->res_irq,
+			    INTR_TYPE_NET /* | INTR_ENTROPY */,
+			    pcf_intr, sc, &sc->intr_cookie);
+	if (rv) {
+		device_printf(dev, "could not setup IRQ\n");
+		goto error;
+	}
+
+	if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
+		device_printf(dev, "could not allocate iicbus instance\n");
+
+	/* probe and attach the iicbus */
+	bus_generic_attach(dev);
+
+	return (0);
+
+error:
+	if (sc->res_irq != 0) {
+		bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq,
+					sc->res_irq);
+		bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
+				     sc->res_irq);
+	}
+	if (sc->res_ioport != 0) {
+		bus_deactivate_resource(dev, SYS_RES_MEMORY, sc->rid_ioport,
+					sc->res_ioport);
+		bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport,
+				     sc->res_ioport);
+	}
+	return (rv);
+}
+
+static int
+envctrl_detach(device_t dev)
+{
+	struct pcf_softc *sc;
+	int rv;
+
+	sc = DEVTOSOFTC(dev);
+
+	if ((rv = bus_generic_detach(dev)) != 0)
+		return (rv);
+
+	if ((rv = device_delete_child(dev, sc->iicbus)) != 0)
+		return (rv);
+
+	if (sc->res_irq != 0) {
+		BUS_TEARDOWN_INTR(device_get_parent(dev), dev, sc->res_irq,
+				  sc->intr_cookie);
+		bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq);
+		bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq);
+	}
+
+	bus_deactivate_resource(dev, SYS_RES_MEMORY, sc->rid_ioport, sc->res_ioport);
+	bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport, sc->res_ioport);
+
+	return (0);
+}
+
+DRIVER_MODULE(envctrl, ebus, envctrl_driver, envctrl_devclass, 0, 0);
+MODULE_DEPEND(envctrl, iicbus, PCF_MINVER, PCF_PREFVER, PCF_MAXVER);
+MODULE_VERSION(envctrl, PCF_MODVER);