f7a5c9d346
This is a MIPS4KC CPU with various embedded peripherals, including wireless and ethernet support. This commit includes the platform, UART, ethernet MAC and GPIO support. The interrupt-driven GPIO code is disabled for now pending GPIO changes from the submitter. Submitted by: Aleksandr Rybalko <ray@dlink.ua>
142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/*-
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* Copyright (c) 2010 Aleksandr Rybalko.
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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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#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/interrupt.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <mips/rt305x/rt305xreg.h>
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#include <mips/rt305x/rt305x_icvar.h>
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static int rt305x_ic_probe(device_t);
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static int rt305x_ic_attach(device_t);
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static int rt305x_ic_detach(device_t);
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static struct rt305x_ic_softc *rt305x_ic_softc = NULL;
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static int
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rt305x_ic_probe(device_t dev)
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{
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device_set_desc(dev, "RT305X Interrupt Controller driver");
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return (0);
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}
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static int
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rt305x_ic_attach(device_t dev)
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{
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struct rt305x_ic_softc *sc = device_get_softc(dev);
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int error = 0;
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KASSERT((device_get_unit(dev) == 0),
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("rt305x_ic: Only one Interrupt Controller module supported"));
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if (rt305x_ic_softc != NULL)
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return (ENXIO);
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rt305x_ic_softc = sc;
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/* Map control/status registers. */
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sc->mem_rid = 0;
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sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->mem_rid, RF_ACTIVE);
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if (sc->mem_res == NULL) {
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device_printf(dev, "couldn't map memory\n");
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error = ENXIO;
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rt305x_ic_detach(dev);
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return(error);
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}
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return (bus_generic_attach(dev));
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}
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static int
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rt305x_ic_detach(device_t dev)
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{
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struct rt305x_ic_softc *sc = device_get_softc(dev);
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bus_generic_detach(dev);
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if (sc->mem_res)
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
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sc->mem_res);
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return(0);
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}
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uint32_t
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rt305x_ic_get(uint32_t reg)
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{
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struct rt305x_ic_softc *sc = rt305x_ic_softc;
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if (!sc)
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return (0);
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return (bus_read_4(sc->mem_res, reg));
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}
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void
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rt305x_ic_set(uint32_t reg, uint32_t val)
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{
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struct rt305x_ic_softc *sc = rt305x_ic_softc;
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if (!sc)
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return;
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bus_write_4(sc->mem_res, reg, val);
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return;
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}
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static device_method_t rt305x_ic_methods[] = {
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DEVMETHOD(device_probe, rt305x_ic_probe),
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DEVMETHOD(device_attach, rt305x_ic_attach),
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DEVMETHOD(device_detach, rt305x_ic_detach),
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{0, 0},
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};
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static driver_t rt305x_ic_driver = {
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"rt305x_ic",
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rt305x_ic_methods,
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sizeof(struct rt305x_ic_softc),
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};
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static devclass_t rt305x_ic_devclass;
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DRIVER_MODULE(rt305x_ic, obio, rt305x_ic_driver, rt305x_ic_devclass, 0, 0);
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