1 /* $NetBSD: aurtc.c,v 1.7 2005/12/11 12:18:06 christos Exp $ */ 2 3 /* 4 * Copyright 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: aurtc.c,v 1.7 2005/12/11 12:18:06 christos Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 45 #include <dev/clock_subr.h> 46 47 #include <evbmips/evbmips/clockvar.h> 48 #include <mips/alchemy/include/aureg.h> 49 #include <mips/alchemy/include/aubusvar.h> 50 51 static int aurtc_match(struct device *, struct cfdata *, void *); 52 static void aurtc_attach(struct device *, struct device *, void *); 53 54 static void aurtc_init(struct device *); 55 static void aurtc_get(struct device *, time_t, struct clocktime *); 56 static void aurtc_set(struct device *, struct clocktime *); 57 58 CFATTACH_DECL(aurtc, sizeof (struct device), 59 aurtc_match, aurtc_attach, NULL, NULL); 60 61 const struct clockfns aurtc_clockfns = { 62 aurtc_init, aurtc_get, aurtc_set, 63 }; 64 65 int 66 aurtc_match(struct device *parent, struct cfdata *match, void *aux) 67 { 68 struct aubus_attach_args *aa = aux; 69 70 if (strcmp(aa->aa_name, match->cf_name) == 0) 71 return (1); 72 73 return (0); 74 } 75 76 void 77 aurtc_attach(struct device *parent, struct device *self, void *aux) 78 { 79 80 printf(": Au1X00 programmable clock"); /* \n in clockattach */ 81 clockattach(self, &aurtc_clockfns); 82 } 83 84 void 85 aurtc_init(struct device *dev) 86 { 87 88 /* We don't use the aurtc for the hardclock interrupt. */ 89 } 90 91 /* 92 * Note the fake "aurtc" on the Alchemy pb1000 uses a different year base. 93 */ 94 #define PB1000_YEAR_OFFSET 100 95 96 /* 97 * Get the time of day, based on the clock's value and/or the base value. 98 */ 99 void 100 aurtc_get(struct device *dev, time_t base, struct clocktime *ct) 101 { 102 struct clock_ymdhms ymdhms; 103 time_t secs; 104 105 secs = *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PC_BASE + PC_COUNTER_READ_0); 106 107 clock_secs_to_ymdhms(secs, &ymdhms); 108 109 ct->sec = ymdhms.dt_sec; 110 ct->min = ymdhms.dt_min; 111 ct->hour = ymdhms.dt_hour; 112 ct->dow = ymdhms.dt_wday; 113 ct->day = ymdhms.dt_day; 114 ct->mon = ymdhms.dt_mon; 115 ct->year = ymdhms.dt_year - PB1000_YEAR_OFFSET; 116 } 117 118 /* 119 * Reset the TODR based on the time value. 120 */ 121 void 122 aurtc_set(struct device *dev, struct clocktime *ct) 123 { 124 struct clock_ymdhms ymdhms; 125 time_t secs; 126 127 ymdhms.dt_sec = ct->sec; 128 ymdhms.dt_min = ct->min; 129 ymdhms.dt_hour = ct->hour; 130 ymdhms.dt_wday = ct->dow; 131 ymdhms.dt_day = ct->day; 132 ymdhms.dt_mon = ct->mon; 133 ymdhms.dt_year = ct->year + PB1000_YEAR_OFFSET; 134 135 secs = clock_ymdhms_to_secs(&ymdhms); 136 137 *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PC_BASE + PC_COUNTER_READ_0) = secs; 138 } 139