/* $OpenBSD: mcclock_isa.c,v 1.4 2022/10/15 14:58:54 jsg Exp $ */ /* $NetBSD: mcclock_isa.c,v 1.5 1996/12/05 01:39:29 cgd Exp $ */ /* * Copyright (c) 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include #include #include #include #include #include #include #include #include struct mcclock_isa_softc { struct mcclock_softc sc_mcclock; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; }; int mcclock_isa_match(struct device *, void *, void *); void mcclock_isa_attach(struct device *, struct device *, void *); const struct cfattach mcclock_isa_ca = { sizeof (struct mcclock_isa_softc), mcclock_isa_match, mcclock_isa_attach, }; void mcclock_isa_write(struct mcclock_softc *, u_int, u_int); u_int mcclock_isa_read(struct mcclock_softc *, u_int); const struct mcclock_busfns mcclock_isa_busfns = { mcclock_isa_write, mcclock_isa_read, }; int mcclock_isa_match(struct device *parent, void *match, void *aux) { struct isa_attach_args *ia = aux; bus_space_handle_t ioh; if ((ia->ia_iobase != IOBASEUNK && ia->ia_iobase != 0x70) || /* (ia->ia_iosize != 0 && ia->ia_iosize != 0x2) || XXX isa.c */ ia->ia_maddr != MADDRUNK || ia->ia_msize != 0 || ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK) return (0); if (bus_space_map(ia->ia_iot, 0x70, 0x2, 0, &ioh)) return (0); bus_space_unmap(ia->ia_iot, ioh, 0x2); ia->ia_iobase = 0x70; ia->ia_iosize = 0x2; return (1); } void mcclock_isa_attach(struct device *parent, struct device *self, void *aux) { struct isa_attach_args *ia = aux; struct mcclock_isa_softc *sc = (struct mcclock_isa_softc *)self; sc->sc_iot = ia->ia_iot; if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0, &sc->sc_ioh)) panic("mcclock_isa_attach: couldn't map clock I/O space"); mcclock_attach(&sc->sc_mcclock, &mcclock_isa_busfns); } void mcclock_isa_write(struct mcclock_softc *mcsc, u_int reg, u_int datum) { struct mcclock_isa_softc *sc = (struct mcclock_isa_softc *)mcsc; bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; bus_space_write_1(iot, ioh, 0, reg); bus_space_write_1(iot, ioh, 1, datum); } u_int mcclock_isa_read(struct mcclock_softc *mcsc, u_int reg) { struct mcclock_isa_softc *sc = (struct mcclock_isa_softc *)mcsc; bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; bus_space_write_1(iot, ioh, 0, reg); return bus_space_read_1(iot, ioh, 1); }