Differential D9499 Diff 25109 head/sys/mips/broadcom/bhnd_nexus.c

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head/sys/mips/broadcom/bhnd_nexus.c

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				/*-
				* Copyright (c) 2015-2016 Landon Fuller <landon@freebsd.org>
				* 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,
				* without modification.
				* 2. Redistributions in binary form must reproduce at minimum a disclaimer
				* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
				* redistribution must be conditioned upon including a substantially
				* similar Disclaimer requirement for further binary redistribution.
				*
				* NO WARRANTY
				* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
				* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
				* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
				* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
				* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
				*
				* $FreeBSD$
				*/

				#include <sys/cdefs.h>
				__FBSDID("$FreeBSD$");

				/*
				* bhnd(4) driver mix-in providing shared common methods for
				* bhnd bus devices attached via a MIPS root nexus.
				*/

				#include <sys/param.h>
				#include <sys/systm.h>
				#include <sys/bus.h>
				#include <sys/kernel.h>
				#include <sys/module.h>
				#include <sys/rman.h>
				#include <sys/malloc.h>

				#include <machine/bus.h>

				#include <dev/bhnd/bhndvar.h>
				#include <dev/bhnd/bhnd_ids.h>

				#include "bcm_machdep.h"

				#include "bhnd_nexusvar.h"

				/**
				* Default bhnd_nexus implementation of BHND_BUS_ACTIVATE_RESOURCE().
				*/
				static int
				bhnd_nexus_activate_resource(device_t dev, device_t child, int type, int rid,
				struct bhnd_resource *r)
				{
				int error;

				/* Always direct */
				if ((error = bus_activate_resource(child, type, rid, r->res)))
				return (error);

				r->direct = true;
				return (0);
				}

				/**
				* Default bhnd_nexus implementation of BHND_BUS_DEACTIVATE_RESOURCE().
				*/
				static int
				bhnd_nexus_deactivate_resource(device_t dev, device_t child,
				int type, int rid, struct bhnd_resource *r)
				{
				int error;

				/* Always direct */
				KASSERT(r->direct, ("indirect resource delegated to bhnd_nexus\n"));

				if ((error = bus_deactivate_resource(child, type, rid, r->res)))
				return (error);

				r->direct = false;
				return (0);
				}

				/**
				* Default bhnd_nexus implementation of BHND_BUS_IS_HW_DISABLED().
				*/
				static bool
				bhnd_nexus_is_hw_disabled(device_t dev, device_t child)
				{
				struct bcm_platform *bp;
				struct bhnd_chipid *cid;

				bp = bcm_get_platform();
				cid = &bp->cid;

				/* The BCM4706 low-cost package leaves secondary GMAC cores
				* floating */
				if (cid->chip_id == BHND_CHIPID_BCM4706 &&
				cid->chip_pkg == BHND_PKGID_BCM4706L &&
				bhnd_get_device(child) == BHND_COREID_4706_GMAC &&
				bhnd_get_core_unit(child) != 0)
				{
				return (true);
				}

				return (false);
				}

				/**
				* Default bhnd_nexus implementation of BHND_BUS_AGET_ATTACH_TYPE().
				*/
				static bhnd_attach_type
				bhnd_nexus_get_attach_type(device_t dev, device_t child)
				{
				return (BHND_ATTACH_NATIVE);
				}

				/**
				* Default bhnd_nexus implementation of BHND_BUS_GET_CHIPID().
				*/
				static const struct bhnd_chipid *
				bhnd_nexus_get_chipid(device_t dev, device_t child)
				{
				return (&bcm_get_platform()->cid);
				}

				/**
				* Default bhnd_nexus implementation of BHND_BUS_GET_INTR_COUNT().
				*/
				static int
				bhnd_nexus_get_intr_count(device_t dev, device_t child)
				{
				// TODO: arch-specific interrupt handling.
				return (0);
				}

				/**
				* Default bhnd_nexus implementation of BHND_BUS_ASSIGN_INTR().
				*/
				static int
				bhnd_nexus_assign_intr(device_t dev, device_t child, int rid)
				{
				uint32_t ivec;
				int error;

				if ((error = bhnd_get_core_ivec(child, rid, &ivec)))
				return (error);

				return (bus_set_resource(child, SYS_RES_IRQ, rid, ivec, 1));
				}

				static device_method_t bhnd_nexus_methods[] = {
				/* bhnd interface */
				DEVMETHOD(bhnd_bus_activate_resource, bhnd_nexus_activate_resource),
				DEVMETHOD(bhnd_bus_deactivate_resource, bhnd_nexus_deactivate_resource),
				DEVMETHOD(bhnd_bus_is_hw_disabled, bhnd_nexus_is_hw_disabled),
				DEVMETHOD(bhnd_bus_get_attach_type, bhnd_nexus_get_attach_type),
				DEVMETHOD(bhnd_bus_get_chipid, bhnd_nexus_get_chipid),
				DEVMETHOD(bhnd_bus_get_intr_count, bhnd_nexus_get_intr_count),
				DEVMETHOD(bhnd_bus_assign_intr, bhnd_nexus_assign_intr),

				DEVMETHOD_END
				};

				DEFINE_CLASS_0(bhnd, bhnd_nexus_driver, bhnd_nexus_methods,
				sizeof(struct bhnd_softc));