/* $NetBSD: timer_isa.c,v 1.7 2003/08/07 16:26:50 agc Exp $ */ /* $OpenBSD: clock_mc.c,v 1.9 1998/03/16 09:38:26 pefo Exp $ */ /* NetBSD: clock_mc.c,v 1.2 1995/06/28 04:30:30 cgd Exp */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department and Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah Hdr: clock.c 1.18 91/01/21 * * @(#)clock.c 8.1 (Berkeley) 6/10/93 */ /* * Copyright (c) 1988 University of Utah. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department and Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah Hdr: clock.c 1.18 91/01/21 * * @(#)clock.c 8.1 (Berkeley) 6/10/93 */ #include __KERNEL_RCSID(0, "$NetBSD: timer_isa.c,v 1.7 2003/08/07 16:26:50 agc Exp $"); #include #include #include #include #include #include #include #include #include #include #include #define TIMER_IOSIZE 4 #define TIMER_IRQ 0 struct timer_isa_softc { struct device sc_dev; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; }; /* Definition of the driver for autoconfig. */ int timer_isa_match __P((struct device *, struct cfdata *, void *)); void timer_isa_attach __P((struct device *, struct device *, void *)); CFATTACH_DECL(timer_isa, sizeof(struct timer_isa_softc), timer_isa_match, timer_isa_attach, NULL, NULL); /* ISA timer access code */ void timer_isa_init __P((struct device *)); struct timerfns timerfns_isa = { timer_isa_init }; int timer_isa_conf = 0; int timer_isa_match(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct isa_attach_args *ia = aux; bus_space_handle_t ioh; if (ia->ia_nio < 1 || (ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT && ia->ia_io[0].ir_addr != IO_TIMER1)) return (0); if (ia->ia_niomem > 0 && (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT)) return (0); if (ia->ia_nirq > 0 && (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT && ia->ia_irq[0].ir_irq != TIMER_IRQ)) return (0); if (ia->ia_ndrq > 0 && (ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT)) return (0); if (!timer_isa_conf) return (0); if (bus_space_map(ia->ia_iot, IO_TIMER1, TIMER_IOSIZE, 0, &ioh)) return (0); bus_space_unmap(ia->ia_iot, ioh, TIMER_IOSIZE); ia->ia_nio = 1; ia->ia_io[0].ir_addr = IO_TIMER1; ia->ia_io[0].ir_size = TIMER_IOSIZE; ia->ia_niomem = 0; ia->ia_nirq = 0; ia->ia_ndrq = 0; return (1); } void timer_isa_attach(parent, self, aux) struct device *parent; struct device *self; void *aux; { struct timer_isa_softc *sc = (struct timer_isa_softc *)self; struct isa_attach_args *ia = aux; void *ih; printf("\n"); sc->sc_iot = ia->ia_iot; if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, ia->ia_io[0].ir_size, 0, &sc->sc_ioh)) panic("timer_isa_attach: couldn't map clock I/O space"); ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_PULSE, IPL_CLOCK, (int (*)(void *))hardclock, NULL /* clockframe is hardcoded */); if (ih == NULL) printf("%s: can't establish interrupt\n", sc->sc_dev.dv_xname); timerattach(&sc->sc_dev, &timerfns_isa); } void timer_isa_init(self) struct device *self; { struct timer_isa_softc *sc = (struct timer_isa_softc *)self; bus_space_write_1(sc->sc_iot, sc->sc_ioh, TIMER_MODE, TIMER_SEL0 | TIMER_16BIT | TIMER_RATEGEN); bus_space_write_1(sc->sc_iot, sc->sc_ioh, TIMER_CNTR0, TIMER_DIV(hz) % 256); bus_space_write_1(sc->sc_iot, sc->sc_ioh, TIMER_CNTR0, TIMER_DIV(hz) / 256); }