/* $NetBSD: obio_mputmr.c,v 1.8 2013/06/16 17:47:54 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Microsoft * * 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 __KERNEL_RCSID(0, "$NetBSD: obio_mputmr.c,v 1.8 2013/06/16 17:47:54 matt Exp $"); #include "opt_omap.h" #include "opt_cpuoptions.h" #include #include #include #include #include #include #include #include #include #include #include #if defined(OMAP_2430) || defined(OMAP_2420) #include #endif #include typedef struct { uint gptn; bus_addr_t addr; uint intr; uint32_t clksel2; uint32_t fclken1; uint32_t iclken1; } gptimer_instance_t; /* XXX * this table can be used to initialize the GP Timers * until we use config(8) locators for CLKSEL2 values, you may want to edit here. */ #define GPT_ENTRY(n) { \ .gptn = (n), \ .addr = GPT ## n ## _BASE, \ .intr = IRQ_ ## GPT ## n, \ .clksel2 = OMAP2_CM_CLKSEL2_CORE_GPTn(n, \ CLKSEL2_CORE_GPT_SYS_CLK), \ .fclken1 = OMAP2_CM_FCLKEN1_CORE_EN_GPT ## n, \ .iclken1 = OMAP2_CM_ICLKEN1_CORE_EN_GPT ## n, \ } static const gptimer_instance_t gptimer_instance_tab[] = { GPT_ENTRY( 2), GPT_ENTRY( 3), GPT_ENTRY( 4), GPT_ENTRY( 5), GPT_ENTRY( 6), GPT_ENTRY( 7), GPT_ENTRY( 8), GPT_ENTRY( 9), GPT_ENTRY(10), GPT_ENTRY(11), #ifdef GPT12_BASE GPT_ENTRY(12), #endif }; #undef GPT_ENTRY static const gptimer_instance_t * gpt_lookup(struct obio_attach_args *); static void gpt_enable(struct mputmr_softc *, struct obio_attach_args *, const gptimer_instance_t *); static int obiomputmr_match(device_t, struct cfdata *, void *); static void obiomputmr_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(obiomputmr, sizeof(struct mputmr_softc), obiomputmr_match, obiomputmr_attach, NULL, NULL); static int obiomputmr_match(device_t parent, cfdata_t match, void *aux) { struct obio_attach_args *obio = aux; if (obio->obio_addr == -1 || obio->obio_intr == -1) panic("omapmputmr must have addr and intr specified in config."); if (obio->obio_size == 0) obio->obio_size = 256; /* Per the OMAP TRM. */ if (gpt_lookup(obio) != NULL) { /* We implicitly trust the config file. */ return 1; } KASSERT(obio->obio_addr != GPT2_BASE); return 0; } void obiomputmr_attach(device_t parent, device_t self, void *aux) { struct mputmr_softc *sc = device_private(self); struct obio_attach_args *obio = aux; int ints_per_sec; sc->sc_dev = self; sc->sc_iot = obio->obio_iot; sc->sc_intr = obio->obio_intr; if (bus_space_map(obio->obio_iot, obio->obio_addr, obio->obio_size, 0, &sc->sc_ioh)) panic("%s: Cannot map registers", device_xname(self)); switch (device_unit(self)) { /* XXX broken */ case 0: clock_sc = sc; ints_per_sec = hz; break; case 1: stat_sc = sc; ints_per_sec = profhz = stathz = STATHZ; break; case 2: ref_sc = sc; ints_per_sec = hz; /* Same rate as clock */ break; default: ints_per_sec = hz; /* Better value? */ break; } aprint_normal(": OMAP MPU Timer"); gpt_enable(sc, obio, gpt_lookup(obio)); aprint_normal("\n"); aprint_naive("\n"); #if defined(OMAP_2430) || defined(OMAP_2420) /* Stop the timer from counting, but keep the timer module working. */ bus_space_write_4(sc->sc_iot, sc->sc_ioh, MPU_CNTL_TIMER, MPU_CLOCK_ENABLE); #endif timer_factors tf; calc_timer_factors(ints_per_sec, &tf); switch (device_unit(self)) { /* XXX broken */ case 0: #ifndef ARM11_PMC counts_per_hz = tf.reload + 1; counts_per_usec = tf.counts_per_usec; #endif break; case 2: /* * The microtime reference clock for all practical purposes * just wraps around as an unsigned int. */ tf.reload = 0xffffffff; break; default: break; } #if defined(OMAP_2430) || defined(OMAP_2420) /* Set the reload value. */ bus_space_write_4(sc->sc_iot, sc->sc_ioh, MPU_LOAD_TIMER, tf.reload); /* Set the PTV and the other required bits and pieces. */ bus_space_write_4(sc->sc_iot, sc->sc_ioh, MPU_CNTL_TIMER, ( MPU_CLOCK_ENABLE | (tf.ptv << MPU_PTV_SHIFT) | MPU_AR | MPU_ST)); /* The clock is now running, but is not generating interrupts. */ #endif } static const gptimer_instance_t * gpt_lookup(struct obio_attach_args *obio) { const gptimer_instance_t *ip; uint i; for (i = 0, ip = gptimer_instance_tab; i < __arraycount(gptimer_instance_tab); i++, ip++) { if (ip->addr == obio->obio_addr && ip->intr == obio->obio_intr) return ip; } return NULL; } void gpt_enable( struct mputmr_softc *sc, struct obio_attach_args *obio, const gptimer_instance_t *ip) { KASSERT(ip != NULL); aprint_normal(" #%d", ip->gptn); #if defined(OMAP_2430) || defined(OMAP_2420) bus_space_handle_t ioh; uint32_t r; int err = bus_space_map(obio->obio_iot, OMAP2_CM_BASE, OMAP2_CM_SIZE, 0, &ioh); KASSERT(err == 0); r = bus_space_read_4(obio->obio_iot, ioh, OMAP2_CM_CLKSEL2_CORE); r |= ip->clksel2; bus_space_write_4(obio->obio_iot, ioh, OMAP2_CM_CLKSEL2_CORE, r); r = bus_space_read_4(obio->obio_iot, ioh, OMAP2_CM_FCLKEN1_CORE); r |= ip->fclken1; bus_space_write_4(obio->obio_iot, ioh, OMAP2_CM_FCLKEN1_CORE, r); r = bus_space_read_4(obio->obio_iot, ioh, OMAP2_CM_ICLKEN1_CORE); r |= ip->iclken1; bus_space_write_4(obio->obio_iot, ioh, OMAP2_CM_ICLKEN1_CORE, r); bus_space_unmap(obio->obio_iot, ioh, OMAP2_CM_SIZE); #endif }