1*de4da6cdSDmitry Chagin /*- 2*de4da6cdSDmitry Chagin * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3*de4da6cdSDmitry Chagin * 4*de4da6cdSDmitry Chagin * Copyright (C) 2005 TAKAHASHI Yoshihiro. All rights reserved. 5*de4da6cdSDmitry Chagin * 6*de4da6cdSDmitry Chagin * Redistribution and use in source and binary forms, with or without 7*de4da6cdSDmitry Chagin * modification, are permitted provided that the following conditions 8*de4da6cdSDmitry Chagin * are met: 9*de4da6cdSDmitry Chagin * 1. Redistributions of source code must retain the above copyright 10*de4da6cdSDmitry Chagin * notice, this list of conditions and the following disclaimer. 11*de4da6cdSDmitry Chagin * 2. Redistributions in binary form must reproduce the above copyright 12*de4da6cdSDmitry Chagin * notice, this list of conditions and the following disclaimer in the 13*de4da6cdSDmitry Chagin * documentation and/or other materials provided with the distribution. 14*de4da6cdSDmitry Chagin * 15*de4da6cdSDmitry Chagin * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16*de4da6cdSDmitry Chagin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17*de4da6cdSDmitry Chagin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18*de4da6cdSDmitry Chagin * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 19*de4da6cdSDmitry Chagin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20*de4da6cdSDmitry Chagin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21*de4da6cdSDmitry Chagin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22*de4da6cdSDmitry Chagin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23*de4da6cdSDmitry Chagin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24*de4da6cdSDmitry Chagin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25*de4da6cdSDmitry Chagin * SUCH DAMAGE. 26*de4da6cdSDmitry Chagin * 27*de4da6cdSDmitry Chagin * $FreeBSD$ 28*de4da6cdSDmitry Chagin */ 29*de4da6cdSDmitry Chagin 30*de4da6cdSDmitry Chagin /* 31*de4da6cdSDmitry Chagin * The outputs of the three timers are connected as follows: 32*de4da6cdSDmitry Chagin * 33*de4da6cdSDmitry Chagin * timer 0 -> irq 0 34*de4da6cdSDmitry Chagin * timer 1 -> dma chan 0 (for dram refresh) 35*de4da6cdSDmitry Chagin * timer 2 -> speaker (via keyboard controller) 36*de4da6cdSDmitry Chagin * 37*de4da6cdSDmitry Chagin * Timer 0 is used to call hardclock. 38*de4da6cdSDmitry Chagin * Timer 2 is used to generate console beeps. 39*de4da6cdSDmitry Chagin */ 40*de4da6cdSDmitry Chagin 41*de4da6cdSDmitry Chagin #ifndef _MACHINE_TIMERREG_H_ 42*de4da6cdSDmitry Chagin #define _MACHINE_TIMERREG_H_ 43*de4da6cdSDmitry Chagin 44*de4da6cdSDmitry Chagin #ifdef _KERNEL 45*de4da6cdSDmitry Chagin 46*de4da6cdSDmitry Chagin #include <dev/ic/i8253reg.h> 47*de4da6cdSDmitry Chagin 48*de4da6cdSDmitry Chagin #define IO_TIMER1 0x40 /* 8253 Timer #1 */ 49*de4da6cdSDmitry Chagin #define TIMER_CNTR0 (IO_TIMER1 + TIMER_REG_CNTR0) 50*de4da6cdSDmitry Chagin #define TIMER_CNTR1 (IO_TIMER1 + TIMER_REG_CNTR1) 51*de4da6cdSDmitry Chagin #define TIMER_CNTR2 (IO_TIMER1 + TIMER_REG_CNTR2) 52*de4da6cdSDmitry Chagin #define TIMER_MODE (IO_TIMER1 + TIMER_REG_MODE) 53*de4da6cdSDmitry Chagin 54*de4da6cdSDmitry Chagin #endif /* _KERNEL */ 55*de4da6cdSDmitry Chagin 56*de4da6cdSDmitry Chagin #endif /* _MACHINE_TIMERREG_H_ */ 57