Author: manu
Date: Mon Jul 22 21:55:33 2019
New Revision: 350230
URL: https://svnweb.freebsd.org/changeset/base/350230
Log:
arm: ti: Add a driver for ti,sysc bus
ti,sysc is a simple-bus like driver.
Add a driver for it so child nodes can attach.
Added:
head/sys/arm/ti/ti_sysc.c (contents, props changed)
Modified:
head/sys/arm/ti/files.ti
Modified: head/sys/arm/ti/files.ti
==============================================================================
--- head/sys/arm/ti/files.ti Mon Jul 22 21:53:58 2019 (r350229)
+++ head/sys/arm/ti/files.ti Mon Jul 22 21:55:33 2019 (r350230)
@@ -16,6 +16,7 @@ arm/ti/ti_gpio_if.m optional
gpio
arm/ti/ti_i2c.c optional ti_i2c
arm/ti/ti_sdhci.c optional sdhci
arm/ti/ti_spi.c optional ti_spi
+arm/ti/ti_sysc.c standard
dev/uart/uart_dev_ti8250.c optional uart
dev/uart/uart_dev_ns8250.c optional uart
Added: head/sys/arm/ti/ti_sysc.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/ti/ti_sysc.c Mon Jul 22 21:55:33 2019 (r350230)
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 2019 Emmanuel Vadot <m...@freebsd.org>
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/fbio.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <sys/resource.h>
+#include <machine/bus.h>
+#include <vm/vm.h>
+#include <vm/vm_extern.h>
+#include <vm/vm_kern.h>
+#include <vm/pmap.h>
+
+#include <dev/fdt/simplebus.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+static struct ofw_compat_data compat_data[] = {
+ { "ti,sysc", 1 },
+ { NULL, 0 }
+};
+
+struct ti_sysc_softc {
+ struct simplebus_softc sc;
+ device_t dev;
+};
+
+static int ti_sysc_probe(device_t dev);
+static int ti_sysc_attach(device_t dev);
+static int ti_sysc_detach(device_t dev);
+
+static int
+ti_sysc_probe(device_t dev)
+{
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
+ return (ENXIO);
+
+ device_set_desc(dev, "TI SYSC Interconnect");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+ti_sysc_attach(device_t dev)
+{
+ struct ti_sysc_softc *sc;
+ device_t cdev;
+ phandle_t node, child;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+ node = ofw_bus_get_node(dev);
+
+ simplebus_init(dev, node);
+ if (simplebus_fill_ranges(node, &sc->sc) < 0) {
+ device_printf(dev, "could not get ranges\n");
+ return (ENXIO);
+ }
+
+ for (child = OF_child(node); child > 0; child = OF_peer(child)) {
+ cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
+ if (cdev != NULL)
+ device_probe_and_attach(cdev);
+ }
+
+ return (bus_generic_attach(dev));
+}
+
+static int
+ti_sysc_detach(device_t dev)
+{
+
+ return (EBUSY);
+}
+
+static device_method_t ti_sysc_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, ti_sysc_probe),
+ DEVMETHOD(device_attach, ti_sysc_attach),
+ DEVMETHOD(device_detach, ti_sysc_detach),
+
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_1(ti_sysc, ti_sysc_driver, ti_sysc_methods,
+ sizeof(struct ti_sysc_softc), simplebus_driver);
+
+static devclass_t ti_sysc_devclass;
+
+EARLY_DRIVER_MODULE(ti_sysc, simplebus, ti_sysc_driver,
+ti_sysc_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
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