1 /* $NetBSD: aurtc.c,v 1.5 2002/10/02 15:52:24 thorpej 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/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 42 #include <dev/clock_subr.h> 43 44 #include <evbmips/evbmips/clockvar.h> 45 #include <mips/alchemy/include/aureg.h> 46 #include <mips/alchemy/include/aubusvar.h> 47 48 static int aurtc_match(struct device *, struct cfdata *, void *); 49 static void aurtc_attach(struct device *, struct device *, void *); 50 51 static void aurtc_init(struct device *); 52 static void aurtc_get(struct device *, time_t, struct clocktime *); 53 static void aurtc_set(struct device *, struct clocktime *); 54 55 CFATTACH_DECL(aurtc, sizeof (struct device), 56 aurtc_match, aurtc_attach, NULL, NULL); 57 58 const struct clockfns aurtc_clockfns = { 59 aurtc_init, aurtc_get, aurtc_set, 60 }; 61 62 int 63 aurtc_match(struct device *parent, struct cfdata *match, void *aux) 64 { 65 struct aubus_attach_args *aa = aux; 66 67 if (strcmp(aa->aa_name, match->cf_name) == 0) 68 return (1); 69 70 return (0); 71 } 72 73 void 74 aurtc_attach(struct device *parent, struct device *self, void *aux) 75 { 76 77 printf(": Au1X00 programmable clock"); /* \n in clockattach */ 78 clockattach(self, &aurtc_clockfns); 79 } 80 81 void 82 aurtc_init(struct device *dev) 83 { 84 85 /* We don't use the aurtc for the hardclock interrupt. */ 86 } 87 88 /* 89 * Note the fake "aurtc" on the Alchemy pb1000 uses a different year base. 90 */ 91 #define PB1000_YEAR_OFFSET 100 92 93 /* 94 * Get the time of day, based on the clock's value and/or the base value. 95 */ 96 void 97 aurtc_get(struct device *dev, time_t base, struct clocktime *ct) 98 { 99 struct clock_ymdhms ymdhms; 100 time_t secs; 101 102 secs = *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PC_BASE + PC_COUNTER_READ_0); 103 104 clock_secs_to_ymdhms(secs, &ymdhms); 105 106 ct->sec = ymdhms.dt_sec; 107 ct->min = ymdhms.dt_min; 108 ct->hour = ymdhms.dt_hour; 109 ct->dow = ymdhms.dt_wday; 110 ct->day = ymdhms.dt_day; 111 ct->mon = ymdhms.dt_mon; 112 ct->year = ymdhms.dt_year - PB1000_YEAR_OFFSET; 113 } 114 115 /* 116 * Reset the TODR based on the time value. 117 */ 118 void 119 aurtc_set(struct device *dev, struct clocktime *ct) 120 { 121 struct clock_ymdhms ymdhms; 122 time_t secs; 123 124 ymdhms.dt_sec = ct->sec; 125 ymdhms.dt_min = ct->min; 126 ymdhms.dt_hour = ct->hour; 127 ymdhms.dt_wday = ct->dow; 128 ymdhms.dt_day = ct->day; 129 ymdhms.dt_mon = ct->mon; 130 ymdhms.dt_year = ct->year + PB1000_YEAR_OFFSET; 131 132 secs = clock_ymdhms_to_secs(&ymdhms); 133 134 *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PC_BASE + PC_COUNTER_READ_0) = secs; 135 } 136