1 /* $NetBSD: clock_pcc.c,v 1.2 1996/09/12 05:10:46 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 30 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Glue for the Peripheral Channel Controller timers and the 41 * Mostek clock chip found on the MVME-147. 42 */ 43 44 #include <sys/param.h> 45 #include <sys/kernel.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 49 #include <machine/psl.h> 50 #include <machine/cpu.h> 51 52 #include <mvme68k/mvme68k/clockreg.h> 53 #include <mvme68k/mvme68k/clockvar.h> 54 55 #include <mvme68k/dev/pccreg.h> 56 #include <mvme68k/dev/pccvar.h> 57 58 int clock_pcc_match __P((struct device *, void *, void *)); 59 void clock_pcc_attach __P((struct device *, struct device *, void *)); 60 int clock_pcc_profintr __P((void *)); 61 int clock_pcc_statintr __P((void *)); 62 void clock_pcc_initclocks __P((int, int)); 63 void clock_pcc_shutdown __P((void *)); 64 65 u_char clock_pcc_lvl; 66 67 struct cfattach clock_pcc_ca = { 68 sizeof(struct device), clock_pcc_match, clock_pcc_attach 69 }; 70 71 int 72 clock_pcc_match(parent, match, aux) 73 struct device *parent; 74 void *match, *aux; 75 { 76 struct cfdata *cf = match; 77 struct pcc_attach_args *pa = aux; 78 static int clock_pcc_matched; 79 80 /* Only one clock, please. */ 81 if (clock_pcc_matched) 82 return (0); 83 84 if (strcmp(pa->pa_name, clock_cd.cd_name)) 85 return (0); 86 87 clock_pcc_matched = 1; 88 pa->pa_ipl = cf->pcccf_ipl; 89 90 return (1); 91 } 92 93 void 94 clock_pcc_attach(parent, self, aux) 95 struct device *parent, *self; 96 void *aux; 97 { 98 struct pcc_attach_args *pa = aux; 99 caddr_t nvram, clockregs; 100 101 if (pa->pa_ipl != CLOCK_LEVEL) 102 panic("clock_pcc_attach: wrong interrupt level"); 103 104 nvram = PCC_VADDR(pa->pa_offset); 105 clockregs = PCC_VADDR(pa->pa_offset + PCC_RTC_OFF); 106 107 /* Do common portions of clock config. */ 108 clock_config(self, clockregs, nvram, MK48T02_SIZE, 109 clock_pcc_initclocks); 110 111 /* Ensure our interrupts get disabled at shutdown time. */ 112 (void)shutdownhook_establish(clock_pcc_shutdown, NULL); 113 114 /* Attach the interrupt handlers. */ 115 pccintr_establish(PCCV_TIMER1, clock_pcc_profintr, pa->pa_ipl, NULL); 116 pccintr_establish(PCCV_TIMER2, clock_pcc_statintr, pa->pa_ipl, NULL); 117 clock_pcc_lvl = pa->pa_ipl | PCC_IENABLE | PCC_TIMERACK; 118 } 119 120 void 121 clock_pcc_initclocks(proftick, stattick) 122 int proftick, stattick; 123 { 124 125 sys_pcc->t1_pload = pcc_timer_us2lim(proftick); 126 sys_pcc->t1_cr = PCC_TIMERCLEAR; 127 sys_pcc->t1_cr = PCC_TIMERSTART; 128 sys_pcc->t1_int = clock_pcc_lvl; 129 130 sys_pcc->t2_pload = pcc_timer_us2lim(stattick); 131 sys_pcc->t2_cr = PCC_TIMERCLEAR; 132 sys_pcc->t2_cr = PCC_TIMERSTART; 133 sys_pcc->t2_int = clock_pcc_lvl; 134 } 135 136 int 137 clock_pcc_profintr(frame) 138 void *frame; 139 { 140 141 sys_pcc->t1_int = clock_pcc_lvl; 142 hardclock(frame); 143 clock_profcnt.ev_count++; 144 return (1); 145 } 146 147 int 148 clock_pcc_statintr(frame) 149 void *frame; 150 { 151 152 /* Disable the timer interrupt while we handle it. */ 153 sys_pcc->t2_int = 0; 154 155 statclock((struct clockframe *)frame); 156 157 sys_pcc->t2_pload = 158 pcc_timer_us2lim(CLOCK_NEWINT(clock_statvar, clock_statmin)); 159 sys_pcc->t2_cr = PCC_TIMERCLEAR; 160 sys_pcc->t2_cr = PCC_TIMERSTART; 161 sys_pcc->t2_int = clock_pcc_lvl; 162 163 clock_statcnt.ev_count++; 164 return (1); 165 } 166 167 /* ARGSUSED */ 168 void 169 clock_pcc_shutdown(arg) 170 void *arg; 171 { 172 173 /* Make sure the timer interrupts are turned off. */ 174 sys_pcc->t1_cr = PCC_TIMERCLEAR; 175 sys_pcc->t1_int = 0; 176 sys_pcc->t2_cr = PCC_TIMERCLEAR; 177 sys_pcc->t2_int = 0; 178 } 179