Date: Mon, 16 Jan 2012 20:45:29 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r230232 - in projects/pseries: conf powerpc/pseries Message-ID: <201201162045.q0GKjTdS051161@svn.freebsd.org>
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Author: nwhitehorn Date: Mon Jan 16 20:45:29 2012 New Revision: 230232 URL: http://svn.freebsd.org/changeset/base/230232 Log: Add a root device for virtual devices. The lack of memory resources for these poses interesting challenges for integration into, say, uart(4). Added: projects/pseries/powerpc/pseries/vdevice.c (contents, props changed) Modified: projects/pseries/conf/files.powerpc Modified: projects/pseries/conf/files.powerpc ============================================================================== --- projects/pseries/conf/files.powerpc Mon Jan 16 20:42:56 2012 (r230231) +++ projects/pseries/conf/files.powerpc Mon Jan 16 20:45:29 2012 (r230232) @@ -220,6 +220,7 @@ powerpc/pseries/phyp_console.c optional powerpc/pseries/platform_chrp.c optional pseries powerpc/pseries/rtas_dev.c optional pseries powerpc/pseries/rtas_pci.c optional pseries pci +powerpc/pseries/vdevice.c optional pseries powerpc64 powerpc/pseries/xics.c optional pseries powerpc64 powerpc/psim/iobus.c optional psim powerpc/psim/ata_iobus.c optional ata psim Added: projects/pseries/powerpc/pseries/vdevice.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ projects/pseries/powerpc/pseries/vdevice.c Mon Jan 16 20:45:29 2012 (r230232) @@ -0,0 +1,131 @@ +/*- + * Copyright (c) 2011 Nathan Whitehorn + * 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("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/malloc.h> +#include <sys/bus.h> +#include <sys/cpu.h> +#include <machine/bus.h> + +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +static int vdevice_probe(device_t); +static int vdevice_attach(device_t); +static const struct ofw_bus_devinfo *vdevice_get_devinfo(device_t dev, + device_t child); + +static device_method_t vdevice_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, vdevice_probe), + DEVMETHOD(device_attach, vdevice_attach), + + /* Bus interface */ + DEVMETHOD(bus_add_child, bus_generic_add_child), + DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), + + /* ofw_bus interface */ + DEVMETHOD(ofw_bus_get_devinfo, vdevice_get_devinfo), + DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), + DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), + DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), + DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), + DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), + + DEVMETHOD_END +}; + +static driver_t vdevice_driver = { + "vdevice", + vdevice_methods, + 0 +}; + +static devclass_t vdevice_devclass; + +DRIVER_MODULE(vdevice, nexus, vdevice_driver, vdevice_devclass, 0, 0); + +static int +vdevice_probe(device_t dev) +{ + const char *name; + + name = ofw_bus_get_name(dev); + + if (name == NULL || strcmp(name, "vdevice") != 0) + return (ENXIO); + + if (!ofw_bus_is_compatible(dev, "IBM,vdevice")) + return (ENXIO); + + device_set_desc(dev, "POWER Hypervisor Virtual Device Root"); + + return (0); +} + +static int +vdevice_attach(device_t dev) +{ + phandle_t root, child; + device_t cdev; + struct ofw_bus_devinfo *dinfo; + + root = ofw_bus_get_node(dev); + + for (child = OF_child(root); child != 0; child = OF_peer(child)) { + dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO); + + if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) { + free(dinfo, M_DEVBUF); + continue; + } + cdev = device_add_child(dev, NULL, -1); + if (cdev == NULL) { + device_printf(dev, "<%s>: device_add_child failed\n", + dinfo->obd_name); + ofw_bus_gen_destroy_devinfo(dinfo); + free(dinfo, M_DEVBUF); + continue; + } + device_set_ivars(cdev, dinfo); + } + + return (bus_generic_attach(dev)); +} + +static const struct ofw_bus_devinfo * +vdevice_get_devinfo(device_t dev, device_t child) +{ + return (device_get_ivars(child)); +} +
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