Date: Mon, 22 Jul 2019 21:55:33 +0000 (UTC) From: Emmanuel Vadot <manu@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r350230 - head/sys/arm/ti Message-ID: <201907222155.x6MLtXpR082353@repo.freebsd.org>
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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 <manu@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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