Add a front-end for the `rtc' device which is a MC146818 compatible
clock found on the ISA bus (some USIIe, USIIi and USIIIi models) and EBus (USIII models) instead of a MK48Txx clock. Testet by: Matthew T. Lager" <freebsd@trinetworks.com> on Sun Fire V100, Xavier Beaudouin <kiwi@oav.net> on Netra X1 (initial version)
This commit is contained in:
Marius Strobl
parent
f46d4a6741
commit
906ca21abe
@ -103,6 +103,8 @@ sparc64/sparc64/ofw_bus.c standard
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sparc64/sparc64/ofw_machdep.c standard
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sparc64/sparc64/pmap.c standard
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sparc64/sparc64/prof_machdep.c optional profiling-routine
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sparc64/sparc64/rtc.c optional rtc ebus
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sparc64/sparc64/rtc.c optional rtc isa
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sparc64/sparc64/rwindow.c standard
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sparc64/sparc64/sc_machdep.c optional sc
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sparc64/sparc64/spitfire.c standard
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@ -128,6 +128,8 @@ device auxio # auxiliary I/O device
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device genclock # Generic clock interface
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device eeprom # eeprom (really a front-end for the MK48Txx)
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device mk48txx # Mostek MK48Txx clocks
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device rtc # rtc (really a front-end for the MC146818)
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device mc146818 # Motorola MC146818 and compatible clocks
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# Serial (COM) ports
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device sab # Siemens SAB82532 based serial ports
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@ -42,6 +42,8 @@ device fhc
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device genclock # Generic clock interface
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device eeprom # eeprom (really a front-end for the MK48Txx)
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device mk48txx # Mostek MK48Txx clocks
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device rtc # rtc (really a front-end for the MC146818)
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device mc146818 # Motorola MC146818 and compatible clocks
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#
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# Optional devices:
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181
sys/sparc64/sparc64/rtc.c
Normal file
181
sys/sparc64/sparc64/rtc.c
Normal file
@ -0,0 +1,181 @@
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/*
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* Copyright (c) 2004 Marius Strobl <marius@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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* 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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/*
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* The `rtc' device is a MC146818 compatible clock found on the ISA bus
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* and EBus. The EBus version also has an interrupt property so it could
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* be used to drive the statclock etc.
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*/
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#include "opt_isa.h"
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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/module.h>
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#include <sys/resource.h>
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#include <dev/ofw/ofw_bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <isa/isavar.h>
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#include <dev/mc146818/mc146818var.h>
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#include "clock_if.h"
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static devclass_t rtc_devclass;
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static int rtc_attach(device_t dev);
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static int rtc_ebus_probe(device_t dev);
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#ifdef DEV_ISA
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static int rtc_isa_probe(device_t dev);
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#endif
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static device_method_t rtc_ebus_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, rtc_ebus_probe),
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DEVMETHOD(device_attach, rtc_attach),
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/* clock interface */
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DEVMETHOD(clock_gettime, mc146818_gettime),
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DEVMETHOD(clock_settime, mc146818_settime),
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#ifdef notyet
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DEVMETHOD(clock_getsecs, mc146818_getsecs),
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#endif
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{ 0, 0 }
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};
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static driver_t rtc_ebus_driver = {
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"rtc",
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rtc_ebus_methods,
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sizeof(struct mc146818_softc),
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};
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DRIVER_MODULE(rtc, ebus, rtc_ebus_driver, rtc_devclass, 0, 0);
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#ifdef DEV_ISA
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static device_method_t rtc_isa_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, rtc_isa_probe),
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DEVMETHOD(device_attach, rtc_attach),
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/* clock interface */
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DEVMETHOD(clock_gettime, mc146818_gettime),
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DEVMETHOD(clock_settime, mc146818_settime),
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#ifdef notyet
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DEVMETHOD(clock_getsecs, mc146818_getsecs),
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#endif
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{ 0, 0 }
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};
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static driver_t rtc_isa_driver = {
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"rtc",
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rtc_isa_methods,
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sizeof(struct mc146818_softc),
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};
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DRIVER_MODULE(rtc, isa, rtc_isa_driver, rtc_devclass, 0, 0);
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#endif
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static int
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rtc_ebus_probe(device_t dev)
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{
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if (strcmp(ofw_bus_get_name(dev), "rtc") == 0) {
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device_set_desc(dev, "Real Time 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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#ifdef DEV_ISA
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static struct isa_pnp_id rtc_isa_ids[] = {
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{ 0x000bd041, "AT realtime clock" }, /* PNP0B00 */
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{ 0 }
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};
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static int
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rtc_isa_probe(device_t dev)
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{
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if (ISA_PNP_PROBE(device_get_parent(dev), dev, rtc_isa_ids) == 0) {
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device_set_desc(dev, "Real Time 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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#endif
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static int
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rtc_attach(device_t dev)
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{
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struct timespec ts;
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struct mc146818_softc *sc;
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struct resource *res;
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int error, rid;
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sc = device_get_softc(dev);
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bzero(sc, sizeof(struct mc146818_softc));
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rid = 0;
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res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, 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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sc->sc_bst = rman_get_bustag(res);
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sc->sc_bsh = rman_get_bushandle(res);
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/* The TOD clock year 0 is 0. */
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sc->sc_year0 = 0;
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/* Use default register read/write and century get/set functions. */
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sc->sc_flag = MC146818_NO_CENT_ADJUST;
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if ((error = mc146818_attach(dev)) != 0) {
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device_printf(dev, "cannot attach time of day clock\n");
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return (error);
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}
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if (bootverbose) {
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mc146818_gettime(dev, &ts);
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device_printf(dev, "current time: %ld.%09ld\n", (long)ts.tv_sec,
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ts.tv_nsec);
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}
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return (0);
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}
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