1a9643ea8Slogwang /*- 2*22ce4affSfengbojiang * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3*22ce4affSfengbojiang * 4a9643ea8Slogwang * Copyright (C) 2005 TAKAHASHI Yoshihiro. All rights reserved. 5a9643ea8Slogwang * 6a9643ea8Slogwang * Redistribution and use in source and binary forms, with or without 7a9643ea8Slogwang * modification, are permitted provided that the following conditions 8a9643ea8Slogwang * are met: 9a9643ea8Slogwang * 1. Redistributions of source code must retain the above copyright 10a9643ea8Slogwang * notice, this list of conditions and the following disclaimer. 11a9643ea8Slogwang * 2. Redistributions in binary form must reproduce the above copyright 12a9643ea8Slogwang * notice, this list of conditions and the following disclaimer in the 13a9643ea8Slogwang * documentation and/or other materials provided with the distribution. 14a9643ea8Slogwang * 15a9643ea8Slogwang * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16a9643ea8Slogwang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17a9643ea8Slogwang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18a9643ea8Slogwang * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 19a9643ea8Slogwang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20a9643ea8Slogwang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21a9643ea8Slogwang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22a9643ea8Slogwang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23a9643ea8Slogwang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24a9643ea8Slogwang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25a9643ea8Slogwang * SUCH DAMAGE. 26a9643ea8Slogwang * 27a9643ea8Slogwang * $FreeBSD$ 28a9643ea8Slogwang */ 29a9643ea8Slogwang 30a9643ea8Slogwang /* 31a9643ea8Slogwang * The outputs of the three timers are connected as follows: 32a9643ea8Slogwang * 33a9643ea8Slogwang * timer 0 -> irq 0 34a9643ea8Slogwang * timer 1 -> dma chan 0 (for dram refresh) 35a9643ea8Slogwang * timer 2 -> speaker (via keyboard controller) 36a9643ea8Slogwang * 37a9643ea8Slogwang * Timer 0 is used to call hardclock. 38a9643ea8Slogwang * Timer 2 is used to generate console beeps. 39a9643ea8Slogwang */ 40a9643ea8Slogwang 41a9643ea8Slogwang #ifndef _MACHINE_TIMERREG_H_ 42a9643ea8Slogwang #define _MACHINE_TIMERREG_H_ 43a9643ea8Slogwang 44a9643ea8Slogwang #ifdef _KERNEL 45a9643ea8Slogwang 46a9643ea8Slogwang #include <dev/ic/i8253reg.h> 47a9643ea8Slogwang 48a9643ea8Slogwang #define IO_TIMER1 0x40 /* 8253 Timer #1 */ 49a9643ea8Slogwang #define TIMER_CNTR0 (IO_TIMER1 + TIMER_REG_CNTR0) 50a9643ea8Slogwang #define TIMER_CNTR1 (IO_TIMER1 + TIMER_REG_CNTR1) 51a9643ea8Slogwang #define TIMER_CNTR2 (IO_TIMER1 + TIMER_REG_CNTR2) 52a9643ea8Slogwang #define TIMER_MODE (IO_TIMER1 + TIMER_REG_MODE) 53a9643ea8Slogwang 54a9643ea8Slogwang #endif /* _KERNEL */ 55a9643ea8Slogwang 56a9643ea8Slogwang #endif /* _MACHINE_TIMERREG_H_ */ 57