195 lines
6.5 KiB
C
195 lines
6.5 KiB
C
/* $NetBSD: mcclock_isa.c,v 1.10 2005/12/11 12:16:39 christos Exp $ */
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/* $OpenBSD: clock_mc.c,v 1.9 1998/03/16 09:38:26 pefo Exp $ */
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/* NetBSD: clock_mc.c,v 1.2 1995/06/28 04:30:30 cgd Exp */
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/*
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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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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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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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* 3. 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: Utah Hdr: clock.c 1.18 91/01/21
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*
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* @(#)clock.c 8.1 (Berkeley) 6/10/93
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*/
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/*
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* Copyright (c) 1988 University of Utah.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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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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* 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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* 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: Utah Hdr: clock.c 1.18 91/01/21
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*
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* @(#)clock.c 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mcclock_isa.c,v 1.10 2005/12/11 12:16:39 christos Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/clock_subr.h>
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#include <dev/ic/mc146818reg.h>
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#include <dev/ic/mc146818var.h>
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#include <arc/isa/mcclock_isavar.h>
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int mcclock_isa_match(struct device *, struct cfdata *, void *);
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void mcclock_isa_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(mcclock_isa, sizeof(struct mc146818_softc),
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mcclock_isa_match, mcclock_isa_attach, NULL, NULL);
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/* Deskstation clock access code */
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static u_int mc_isa_read(struct mc146818_softc *, u_int);
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static void mc_isa_write(struct mc146818_softc *, u_int, u_int);
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int mcclock_isa_conf = 0;
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int
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mcclock_isa_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_handle_t ioh;
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if (ia->ia_nio < 1 ||
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(ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT &&
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ia->ia_io[0].ir_addr != 0x70))
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return 0;
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if (ia->ia_niomem > 0 &&
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(ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM))
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return 0;
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if (ia->ia_nirq > 0 &&
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(ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ))
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return 0;
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if (ia->ia_ndrq > 0 &&
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(ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ))
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return 0;
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if (!mcclock_isa_conf)
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return 0;
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if (bus_space_map(ia->ia_iot, 0x70, 0x02, 0, &ioh))
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return 0;
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bus_space_unmap(ia->ia_iot, ioh, 0x02);
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ia->ia_nio = 1;
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ia->ia_io[0].ir_addr = 0x70;
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ia->ia_io[0].ir_size = 0x02;
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ia->ia_niomem = 0;
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ia->ia_nirq = 0;
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ia->ia_ndrq = 0;
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return 1;
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}
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void
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mcclock_isa_attach(struct device *parent, struct device *self, void *aux)
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{
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struct mc146818_softc *sc = (void *)self;
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struct isa_attach_args *ia = aux;
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sc->sc_bst = ia->ia_iot;
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if (bus_space_map(sc->sc_bst, ia->ia_io[0].ir_addr,
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ia->ia_io[0].ir_size, 0, &sc->sc_bsh))
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panic("mcclock_isa_attach: couldn't map clock I/O space");
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sc->sc_year0 = 1980;
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sc->sc_mcread = mc_isa_read;
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sc->sc_mcwrite = mc_isa_write;
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mc146818_attach(sc);
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printf("\n");
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/* Turn interrupts off, just in case. */
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mc_isa_write(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
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todr_attach(&sc->sc_handle);
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}
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u_int
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mc_isa_read(struct mc146818_softc *sc, u_int reg)
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{
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bus_space_write_1(sc->sc_bst, sc->sc_bsh, 0, reg);
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return bus_space_read_1(sc->sc_bst, sc->sc_bsh, 1);
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}
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void
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mc_isa_write(struct mc146818_softc *sc, u_int reg, u_int datum)
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{
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bus_space_write_1(sc->sc_bst, sc->sc_bsh, 0, reg);
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bus_space_write_1(sc->sc_bst, sc->sc_bsh, 1, datum);
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}
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