/* $NetBSD: obio_timer.c,v 1.6 2025/12/19 13:03:51 nia Exp $ */ /* adapted from: * NetBSD: obio_mputmr.c,v 1.3 2008/08/27 11:03:10 matt Exp */ /* * Based on omap_mputmr.c * Based on i80321_timer.c and arch/arm/sa11x0/sa11x0_ost.c * * Copyright (c) 1997 Mark Brinicombe. * Copyright (c) 1997 Causality Limited. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by IWAMOTO Toshihiro and Ichiro FUKUHARA. * * 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 NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. * * Copyright (c) 2001, 2002 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe for Wasabi Systems, Inc. * * 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 for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC * 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. * * Copyright (c) 2007 Microsoft * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR OR CONTRIBUTERS 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. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: obio_timer.c,v 1.6 2025/12/19 13:03:51 nia Exp $"); #include "opt_cpuoptions.h" #include "opt_gemini.h" #include "locators.h" #include <sys/types.h> #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/time.h> #include <sys/device.h> #include <dev/clock_subr.h> #include <sys/bus.h> #include <machine/intr.h> #include <arm/gemini/gemini_reg.h> #include <arm/gemini/gemini_obiovar.h> #include <arm/gemini/gemini_timervar.h> #if STATHZ != HZ # error system clock HZ and stat clock STATHZ must be same #endif #ifndef GEMINI_TIMER_CLOCK_FREQ # error Specify the timer frequency in Hz with option GEMINI_TIMER_CLOCK_FREQ #endif static int obiotimer_match(device_t, struct cfdata *, void *); static void obiotimer_attach(device_t, device_t, void *); struct geminitmr_softc xsc; typedef struct { uint timerno; bus_addr_t addr; uint intr; } obiotimer_instance_t; /* XXX * this table can be used to match the GP Timers * until we use config(8) locators to distinguish between * gemini "sub-timers". */ #define GPT_ENTRY(n, i) { \ .timerno = (n), \ .addr = GEMINI_TIMER_BASE, \ .intr = i, \ } static const obiotimer_instance_t obiotimer_instance_tab[] = { GPT_ENTRY(1, 14), GPT_ENTRY(2, 15), GPT_ENTRY(3, 16), }; #undef GPT_ENTRY #define GPTIMER_INSTANCE_CNT __arraycount(obiotimer_instance_tab) static const obiotimer_instance_t * obiotimer_lookup(struct obio_attach_args *); static void obiotimer_enable(struct geminitmr_softc *, struct obio_attach_args *, const obiotimer_instance_t *); static int obiotimer_match(device_t, struct cfdata *, void *); static void obiotimer_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(obiotimer, sizeof(struct geminitmr_softc), obiotimer_match, obiotimer_attach, NULL, NULL); static int obiotimer_match(device_t parent, struct cfdata *match, void *aux) { struct obio_attach_args *obio = aux; if ((obio->obio_addr == OBIOCF_ADDR_DEFAULT) || (obio->obio_intr == OBIOCF_INTR_DEFAULT)) panic("geminitmr must have addr and intr specified in config."); if (obiotimer_lookup(obio) == NULL) return 0; return 1; } void obiotimer_attach(device_t parent, device_t self, void *aux) { struct geminitmr_softc *sc = device_private(self); struct obio_attach_args *obio = aux; const obiotimer_instance_t *ip; #ifndef GEMINI_SLAVE static int once=1; #endif ip = obiotimer_lookup(obio); if (ip == NULL) panic("%s: bad lookup", device_xname(self)); /* should not fail since we already matched */ sc->sc_timerno = ip->timerno; sc->sc_iot = obio->obio_iot; sc->sc_intr = obio->obio_intr; sc->sc_addr = obio->obio_addr; sc->sc_size = (obio->obio_size == OBIOCF_SIZE_DEFAULT) ? (GEMINI_TIMER_INTRMASK + 4) : obio->obio_size; if (bus_space_map(sc->sc_iot, sc->sc_addr, sc->sc_size, 0, &sc->sc_ioh)) panic("%s: Cannot map registers", device_xname(self)); obiotimer_enable(sc, obio, obiotimer_lookup(obio)); aprint_normal("\n"); aprint_naive("\n"); #ifndef GEMINI_SLAVE if (once) { once = 0; bus_space_write_4(sc->sc_iot, sc->sc_ioh, GEMINI_TIMER_TMCR, 0); bus_space_write_4(sc->sc_iot, sc->sc_ioh, GEMINI_TIMER_INTRMASK, (uint32_t)~TIMER_INTRMASK_Resv); bus_space_write_4(sc->sc_iot, sc->sc_ioh, GEMINI_TIMER_INTRSTATE, 0); } #endif switch (sc->sc_timerno) { case 1: #ifndef GEMINI_SLAVE /* * timer #1 is the combined system clock and stat clock * for the Master or Single Gemini CPU * it gets started later */ profhz = stathz = hz; stat_sc = clock_sc = sc; #endif break; case 2: #ifdef GEMINI_SLAVE /* * timer #2 is the combined system clock and stat clock * for the Slave Gemini CPU * it gets started later */ profhz = stathz = hz; stat_sc = clock_sc = sc; #endif break; case 3: /* * Timer #3 is used for microtime reference clock and delay() * autoloading, non-interrupting, just wraps around * we start it now to make delay() available */ ref_sc = sc; #ifndef GEMINI_SLAVE gemini_microtime_init(); #endif break; default: panic("bad gemini timer number %d\n", sc->sc_timerno); break; } } static const obiotimer_instance_t * obiotimer_lookup(struct obio_attach_args *obio) { const obiotimer_instance_t *ip; uint i; for (i = 0, ip = obiotimer_instance_tab; i < GPTIMER_INSTANCE_CNT; i++, ip++) { if (ip->addr == obio->obio_addr && ip->intr == obio->obio_intr) return ip; } return NULL; } void obiotimer_enable( struct geminitmr_softc *sc, struct obio_attach_args *obio, const obiotimer_instance_t *ip) { /* nothing to do */ }
