134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/*-
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* Copyright (c) 2017-2018 QCM Technologies.
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* Copyright (c) 2017-2018 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "opt_platform.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#ifdef FDT
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#endif
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struct opal_i2cm_softc
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{
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};
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static int opal_i2cm_attach(device_t);
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static int opal_i2cm_probe(device_t);
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static const struct ofw_bus_devinfo *
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opal_i2cm_get_devinfo(device_t, device_t);
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static device_method_t opal_i2cm_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, opal_i2cm_probe),
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DEVMETHOD(device_attach, opal_i2cm_attach),
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/* ofw_bus interface */
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DEVMETHOD(ofw_bus_get_devinfo, opal_i2cm_get_devinfo),
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DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
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DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
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DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
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DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
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DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
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DEVMETHOD_END
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};
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static devclass_t opal_i2cm_devclass;
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static int
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opal_i2cm_probe(device_t dev)
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{
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if (!(ofw_bus_is_compatible(dev, "ibm,centaur-i2cm") ||
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ofw_bus_is_compatible(dev, "ibm,power8-i2cm")))
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return (ENXIO);
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device_set_desc(dev, "centaur-i2cm");
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return (0);
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}
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static int
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opal_i2cm_attach(device_t dev)
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{
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phandle_t child;
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device_t cdev;
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struct ofw_bus_devinfo *dinfo;
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for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
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child = OF_peer(child)) {
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dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
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if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
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free(dinfo, M_DEVBUF);
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continue;
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}
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cdev = device_add_child(dev, NULL, -1);
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if (cdev == NULL) {
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device_printf(dev, "<%s>: device_add_child failed\n",
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dinfo->obd_name);
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ofw_bus_gen_destroy_devinfo(dinfo);
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free(dinfo, M_DEVBUF);
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continue;
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}
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device_set_ivars(cdev, dinfo);
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}
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return (bus_generic_attach(dev));
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}
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static const struct ofw_bus_devinfo *
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opal_i2cm_get_devinfo(device_t dev, device_t child)
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{
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return (device_get_ivars(child));
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}
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DEFINE_CLASS_0(opal_i2cm, opal_i2cm_driver, opal_i2cm_methods,
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sizeof(struct opal_i2cm_softc));
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DRIVER_MODULE(opal_i2cm, powernv_xscom, opal_i2cm_driver, opal_i2cm_devclass, NULL,
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NULL);
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DRIVER_MODULE(opal_i2cm, powernv_centaur, opal_i2cm_driver, opal_i2cm_devclass, NULL,
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NULL);
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