141 lines
4.4 KiB
C
141 lines
4.4 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1994 Gordon W. Ross
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* Copyright (c) 1993 Adam Glass
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* Copyright (c) 1996 Paul Kranenburg
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* Copyright (c) 1996
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* The President and Fellows of Harvard College. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Harvard University.
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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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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*
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* This product includes software developed by Paul Kranenburg.
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* This product includes software developed by Harvard University.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* from: @(#)clock.c 8.1 (Berkeley) 6/11/93
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* from: NetBSD: clock.c,v 1.41 2001/07/24 19:29:25 eeh Exp
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*
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* $FreeBSD$
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*/
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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/kernel.h>
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#include <sys/malloc.h>
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#include <sys/resource.h>
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#include <machine/bus.h>
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#include <machine/idprom.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <ofw/openfirm.h>
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#include <machine/eeprom.h>
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#include <mk48txx/mk48txxreg.h>
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#include <sparc64/sbus/sbusvar.h>
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#include "clock_if.h"
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static int eeprom_sbus_probe(device_t);
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static int eeprom_sbus_attach(device_t);
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static device_method_t eeprom_sbus_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, eeprom_sbus_probe),
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DEVMETHOD(device_attach, eeprom_sbus_attach),
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/* clock interface */
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DEVMETHOD(clock_gettime, mk48txx_gettime),
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DEVMETHOD(clock_settime, mk48txx_settime),
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{ 0, 0 }
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};
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static driver_t eeprom_sbus_driver = {
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"eeprom",
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eeprom_sbus_methods,
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0,
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};
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DRIVER_MODULE(eeprom, sbus, eeprom_sbus_driver, eeprom_devclass, 0, 0);
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static int
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eeprom_sbus_probe(device_t dev)
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{
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if (strcmp("eeprom", sbus_get_name(dev)) == 0) {
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device_set_desc(dev, "SBus EEPROM/clock");
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return (0);
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}
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return (ENXIO);
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}
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/*
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* Attach a clock (really `eeprom') to the sbus.
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*
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* This is mapped read-only on NetBSD for safety, but this is not possible
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* with the current FreeBSD bus code.
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*
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* the MK48T02 is 2K. the MK48T08 is 8K, and the MK48T59 is supposed to be
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* identical to it.
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*/
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static int
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eeprom_sbus_attach(device_t dev)
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{
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struct resource *res;
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int rid, error;
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rid = 0;
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res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0UL, ~0UL, 1,
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RF_ACTIVE);
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if (res == NULL) {
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device_printf(dev, "could not allocate resources\n");
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return (ENXIO);
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}
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error = eeprom_attach(dev, sbus_get_node(dev), rman_get_bustag(res),
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rman_get_bushandle(res));
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return (error);
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}
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