f75615f26f
drivers. The BMIPS32/BMIPS3300 cores use a register layout distinct from the MIPS74K core, and are only found on siba(4) devices. Reviewed by: mizhka Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D7791
124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/*-
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* Copyright (c) 2016 Landon Fuller <landonf@FreeBSD.org>
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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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*/
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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/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/bhnd/bhnd.h>
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#include "bcm_bmipsreg.h"
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/*
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* BMIPS32 and BMIPS3300 core driver.
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*
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* These cores are only found on siba(4) chipsets, allowing
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* us to assume the availability of siba interrupt registers.
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*/
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static const struct bhnd_device bcm_bmips_devs[] = {
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BHND_DEVICE(BCM, MIPS33, NULL, NULL, BHND_DF_SOC),
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BHND_DEVICE_END
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};
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struct bcm_bmips_softc {
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device_t dev;
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struct resource *mem_res;
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int mem_rid;
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};
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static int
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bcm_bmips_probe(device_t dev)
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{
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const struct bhnd_device *id;
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id = bhnd_device_lookup(dev, bcm_bmips_devs,
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sizeof(bcm_bmips_devs[0]));
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if (id == NULL)
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return (ENXIO);
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bhnd_set_default_core_desc(dev);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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bcm_bmips_attach(device_t dev)
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{
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struct bcm_bmips_softc *sc;
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sc = device_get_softc(dev);
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sc->dev = dev;
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/* Allocate bus resources */
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sc->mem_rid = 0;
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sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
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RF_ACTIVE);
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if (sc->mem_res == NULL)
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return (ENXIO);
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return (0);
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}
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static int
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bcm_bmips_detach(device_t dev)
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{
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struct bcm_bmips_softc *sc;
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sc = device_get_softc(dev);
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem_res);
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return (0);
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}
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static device_method_t bcm_bmips_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, bcm_bmips_probe),
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DEVMETHOD(device_attach, bcm_bmips_attach),
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DEVMETHOD(device_detach, bcm_bmips_detach),
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DEVMETHOD_END
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};
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static devclass_t bcm_mips_devclass;
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DEFINE_CLASS_0(bcm_mips, bcm_bmips_driver, bcm_bmips_methods, sizeof(struct bcm_bmips_softc));
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EARLY_DRIVER_MODULE(bcm_bmips, bhnd, bcm_bmips_driver, bcm_mips_devclass, 0, 0, BUS_PASS_CPU + BUS_PASS_ORDER_EARLY);
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MODULE_VERSION(bcm_bmips, 1);
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MODULE_DEPEND(bcm_bmips, bhnd, 1, 1, 1);
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