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clock.c revision 1.4.24.1
      1  1.4.24.1  jdolecek /*	$NetBSD: clock.c,v 1.4.24.1 2017/12/03 11:36:00 jdolecek Exp $	*/
      2       1.1       cdi 
      3       1.1       cdi /*-
      4       1.1       cdi  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      5       1.1       cdi  * All rights reserved.
      6       1.1       cdi  *
      7       1.1       cdi  * This code is derived from software contributed to The NetBSD Foundation
      8       1.1       cdi  * by Manuel Bouyer.
      9       1.1       cdi  *
     10       1.1       cdi  * Redistribution and use in source and binary forms, with or without
     11       1.1       cdi  * modification, are permitted provided that the following conditions
     12       1.1       cdi  * are met:
     13       1.1       cdi  * 1. Redistributions of source code must retain the above copyright
     14       1.1       cdi  *    notice, this list of conditions and the following disclaimer.
     15       1.1       cdi  * 2. Redistributions in binary form must reproduce the above copyright
     16       1.1       cdi  *    notice, this list of conditions and the following disclaimer in the
     17       1.1       cdi  *    documentation and/or other materials provided with the distribution.
     18       1.1       cdi  *
     19       1.1       cdi  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20       1.1       cdi  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21       1.1       cdi  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22       1.1       cdi  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23       1.1       cdi  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24       1.1       cdi  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25       1.1       cdi  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26       1.1       cdi  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27       1.1       cdi  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28       1.1       cdi  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29       1.1       cdi  * POSSIBILITY OF SUCH DAMAGE.
     30       1.1       cdi  */
     31       1.1       cdi 
     32       1.2   tsutsui #include <sys/param.h>
     33       1.1       cdi #include <sys/types.h>
     34       1.1       cdi #include <lib/libsa/stand.h>
     35       1.2   tsutsui #include <lib/libkern/libkern.h>
     36       1.2   tsutsui 
     37       1.2   tsutsui #include <netinet/in.h>
     38       1.2   tsutsui #include <netinet/in_systm.h>
     39       1.2   tsutsui #include <lib/libsa/net.h>
     40       1.2   tsutsui 
     41  1.4.24.1  jdolecek #include <dev/clock_subr.h>
     42       1.2   tsutsui #include <dev/ic/mc146818reg.h>
     43       1.2   tsutsui 
     44       1.2   tsutsui #include <mips/cpuregs.h>
     45       1.1       cdi 
     46       1.1       cdi #include "boot.h"
     47       1.1       cdi 
     48       1.1       cdi #define DELAY_CALIBRATE	1000
     49       1.1       cdi 
     50       1.2   tsutsui #define MCCLOCK_BASE	0x10000070
     51       1.2   tsutsui #define MCCLOCK_REG	0
     52       1.2   tsutsui #define MCCLOCK_DATA	1
     53       1.2   tsutsui 
     54       1.1       cdi void
     55       1.1       cdi delay(int ms)
     56       1.1       cdi {
     57       1.1       cdi 	/*
     58       1.1       cdi 	 * XXX need *real* clock calibration.
     59       1.1       cdi 	 */
     60       1.1       cdi 	volatile register int N = ms * DELAY_CALIBRATE;
     61       1.1       cdi 	for (; --N;)
     62       1.2   tsutsui 		__insn_barrier();
     63       1.2   tsutsui }
     64       1.2   tsutsui 
     65       1.4   tsutsui satime_t
     66       1.2   tsutsui getsecs(void)
     67       1.2   tsutsui {
     68       1.2   tsutsui 	volatile uint8_t *mcclock_reg, *mcclock_data;
     69       1.2   tsutsui 	u_int sec;
     70       1.2   tsutsui 
     71       1.2   tsutsui 	mcclock_reg  = (void *)MIPS_PHYS_TO_KSEG1(MCCLOCK_BASE + MCCLOCK_REG);
     72       1.2   tsutsui 	mcclock_data = (void *)MIPS_PHYS_TO_KSEG1(MCCLOCK_BASE + MCCLOCK_DATA);
     73       1.2   tsutsui 
     74       1.2   tsutsui 	*mcclock_reg = MC_SEC;
     75       1.2   tsutsui 	sec  = bcdtobin(*mcclock_data);
     76       1.2   tsutsui 	*mcclock_reg = MC_MIN;
     77       1.2   tsutsui 	sec += bcdtobin(*mcclock_data) * 60;
     78       1.2   tsutsui 	*mcclock_reg = MC_HOUR;
     79       1.2   tsutsui 	sec += bcdtobin(*mcclock_data) * 60 * 60;
     80       1.2   tsutsui 
     81       1.4   tsutsui 	return (satime_t)sec;
     82       1.1       cdi }
     83