geodecntr.c revision 1.2.6.2
1 1.2.6.2 yamt /* $NetBSD: geodecntr.c,v 1.2.6.2 2006/06/21 14:52:30 yamt Exp $ */ 2 1.2.6.2 yamt 3 1.2.6.2 yamt /*- 4 1.2.6.2 yamt * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 1.2.6.2 yamt * All rights reserved. 6 1.2.6.2 yamt * 7 1.2.6.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.2.6.2 yamt * by Frank Kardel inspired from the patches to FreeBSD by Poul Henning Kamp 9 1.2.6.2 yamt * 10 1.2.6.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.2.6.2 yamt * modification, are permitted provided that the following conditions 12 1.2.6.2 yamt * are met: 13 1.2.6.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.2.6.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.2.6.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.6.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.2.6.2 yamt * documentation and/or other materials provided with the distribution. 18 1.2.6.2 yamt * 3. All advertising materials mentioning features or use of this software 19 1.2.6.2 yamt * must display the following acknowledgement: 20 1.2.6.2 yamt * This product includes software developed by the NetBSD 21 1.2.6.2 yamt * Foundation, Inc. and its contributors. 22 1.2.6.2 yamt * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2.6.2 yamt * contributors may be used to endorse or promote products derived 24 1.2.6.2 yamt * from this software without specific prior written permission. 25 1.2.6.2 yamt * 26 1.2.6.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2.6.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2.6.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2.6.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2.6.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2.6.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2.6.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2.6.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2.6.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2.6.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2.6.2 yamt * POSSIBILITY OF SUCH DAMAGE. 37 1.2.6.2 yamt */ 38 1.2.6.2 yamt 39 1.2.6.2 yamt #include <sys/cdefs.h> 40 1.2.6.2 yamt __KERNEL_RCSID(0, "$NetBSD: geodecntr.c,v 1.2.6.2 2006/06/21 14:52:30 yamt Exp $"); 41 1.2.6.2 yamt 42 1.2.6.2 yamt #include <sys/param.h> 43 1.2.6.2 yamt #include <sys/systm.h> 44 1.2.6.2 yamt #include <sys/kernel.h> 45 1.2.6.2 yamt #include <sys/device.h> 46 1.2.6.2 yamt #include <machine/cpu.h> 47 1.2.6.2 yamt #include <sys/timetc.h> 48 1.2.6.2 yamt #include <machine/bus.h> 49 1.2.6.2 yamt #include <arch/i386/pci/geodevar.h> 50 1.2.6.2 yamt #include <arch/i386/pci/geodereg.h> 51 1.2.6.2 yamt 52 1.2.6.2 yamt struct geodecntr_softc { 53 1.2.6.2 yamt struct device sc_dev; 54 1.2.6.2 yamt struct geode_gcb_softc *sc_gcb_dev; 55 1.2.6.2 yamt struct timecounter sc_tc; 56 1.2.6.2 yamt }; 57 1.2.6.2 yamt 58 1.2.6.2 yamt static unsigned geode_get_timecount(struct timecounter *); 59 1.2.6.2 yamt 60 1.2.6.2 yamt static int attached = 0; 61 1.2.6.2 yamt 62 1.2.6.2 yamt static int 63 1.2.6.2 yamt geodecntr_match(struct device *parent, struct cfdata *match, void *aux) 64 1.2.6.2 yamt { 65 1.2.6.2 yamt return !attached; 66 1.2.6.2 yamt } 67 1.2.6.2 yamt 68 1.2.6.2 yamt /* 69 1.2.6.2 yamt * attach time counter 70 1.2.6.2 yamt */ 71 1.2.6.2 yamt static void 72 1.2.6.2 yamt geodecntr_attach(struct device *parent, struct device *self, void *aux) 73 1.2.6.2 yamt { 74 1.2.6.2 yamt struct geodecntr_softc *sc = (struct geodecntr_softc *) self; 75 1.2.6.2 yamt 76 1.2.6.2 yamt aprint_normal(": AMD Geode SC1100 27Mhz Counter\n"); 77 1.2.6.2 yamt 78 1.2.6.2 yamt sc->sc_gcb_dev = (struct geode_gcb_softc *)parent; 79 1.2.6.2 yamt 80 1.2.6.2 yamt /* 81 1.2.6.2 yamt * select 27MHz, no powerdown, no interrupt 82 1.2.6.2 yamt */ 83 1.2.6.2 yamt bus_space_write_1(sc->sc_gcb_dev->sc_iot, sc->sc_gcb_dev->sc_ioh, 84 1.2.6.2 yamt SC1100_GCB_TMCNFG_B, SC1100_TMCNFG_TMCLKSEL); 85 1.2.6.2 yamt 86 1.2.6.2 yamt memset(&sc->sc_tc, 0, sizeof(sc->sc_tc)); 87 1.2.6.2 yamt 88 1.2.6.2 yamt sc->sc_tc.tc_get_timecount = geode_get_timecount; 89 1.2.6.2 yamt sc->sc_tc.tc_poll_pps = NULL; 90 1.2.6.2 yamt sc->sc_tc.tc_counter_mask = 0xffffffff; 91 1.2.6.2 yamt sc->sc_tc.tc_frequency = 27000000; 92 1.2.6.2 yamt sc->sc_tc.tc_name = "geodecounter"; 93 1.2.6.2 yamt sc->sc_tc.tc_priv = sc; 94 1.2.6.2 yamt sc->sc_tc.tc_quality = 1000; 95 1.2.6.2 yamt 96 1.2.6.2 yamt tc_init(&sc->sc_tc); 97 1.2.6.2 yamt 98 1.2.6.2 yamt attached = 1; 99 1.2.6.2 yamt } 100 1.2.6.2 yamt 101 1.2.6.2 yamt /* 102 1.2.6.2 yamt * read counter 103 1.2.6.2 yamt */ 104 1.2.6.2 yamt static unsigned geode_get_timecount(struct timecounter *tc) 105 1.2.6.2 yamt { 106 1.2.6.2 yamt struct geodecntr_softc *sc = (struct geodecntr_softc *)tc->tc_priv; 107 1.2.6.2 yamt 108 1.2.6.2 yamt return bus_space_read_4(sc->sc_gcb_dev->sc_iot, sc->sc_gcb_dev->sc_ioh, SC1100_GCB_TMVALUE_L); 109 1.2.6.2 yamt } 110 1.2.6.2 yamt 111 1.2.6.2 yamt CFATTACH_DECL(geodecntr, sizeof(struct geodecntr_softc), 112 1.2.6.2 yamt geodecntr_match, geodecntr_attach, NULL, NULL); 113 1.2.6.2 yamt 114
Indexes created Sun Oct 26 21:10:03 GMT 2025