1de4da6cdSDmitry Chagin /*- 2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 3de4da6cdSDmitry Chagin * 4de4da6cdSDmitry Chagin * Copyright (C) 2005 TAKAHASHI Yoshihiro. All rights reserved. 5de4da6cdSDmitry Chagin * 6de4da6cdSDmitry Chagin * Redistribution and use in source and binary forms, with or without 7de4da6cdSDmitry Chagin * modification, are permitted provided that the following conditions 8de4da6cdSDmitry Chagin * are met: 9de4da6cdSDmitry Chagin * 1. Redistributions of source code must retain the above copyright 10de4da6cdSDmitry Chagin * notice, this list of conditions and the following disclaimer. 11de4da6cdSDmitry Chagin * 2. Redistributions in binary form must reproduce the above copyright 12de4da6cdSDmitry Chagin * notice, this list of conditions and the following disclaimer in the 13de4da6cdSDmitry Chagin * documentation and/or other materials provided with the distribution. 14de4da6cdSDmitry Chagin * 15de4da6cdSDmitry Chagin * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16de4da6cdSDmitry Chagin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17de4da6cdSDmitry Chagin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18de4da6cdSDmitry Chagin * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 19de4da6cdSDmitry Chagin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20de4da6cdSDmitry Chagin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21de4da6cdSDmitry Chagin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22de4da6cdSDmitry Chagin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23de4da6cdSDmitry Chagin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24de4da6cdSDmitry Chagin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25de4da6cdSDmitry Chagin * SUCH DAMAGE. 26de4da6cdSDmitry Chagin */ 27de4da6cdSDmitry Chagin 28de4da6cdSDmitry Chagin /* 29de4da6cdSDmitry Chagin * The outputs of the three timers are connected as follows: 30de4da6cdSDmitry Chagin * 31de4da6cdSDmitry Chagin * timer 0 -> irq 0 32de4da6cdSDmitry Chagin * timer 1 -> dma chan 0 (for dram refresh) 33de4da6cdSDmitry Chagin * timer 2 -> speaker (via keyboard controller) 34de4da6cdSDmitry Chagin * 35de4da6cdSDmitry Chagin * Timer 0 is used to call hardclock. 36de4da6cdSDmitry Chagin * Timer 2 is used to generate console beeps. 37de4da6cdSDmitry Chagin */ 38de4da6cdSDmitry Chagin 39de4da6cdSDmitry Chagin #ifndef _MACHINE_TIMERREG_H_ 40de4da6cdSDmitry Chagin #define _MACHINE_TIMERREG_H_ 41de4da6cdSDmitry Chagin 42de4da6cdSDmitry Chagin #ifdef _KERNEL 43de4da6cdSDmitry Chagin 44de4da6cdSDmitry Chagin #include <dev/ic/i8253reg.h> 45de4da6cdSDmitry Chagin 46de4da6cdSDmitry Chagin #define IO_TIMER1 0x40 /* 8253 Timer #1 */ 47de4da6cdSDmitry Chagin #define TIMER_CNTR0 (IO_TIMER1 + TIMER_REG_CNTR0) 48de4da6cdSDmitry Chagin #define TIMER_CNTR1 (IO_TIMER1 + TIMER_REG_CNTR1) 49de4da6cdSDmitry Chagin #define TIMER_CNTR2 (IO_TIMER1 + TIMER_REG_CNTR2) 50de4da6cdSDmitry Chagin #define TIMER_MODE (IO_TIMER1 + TIMER_REG_MODE) 51de4da6cdSDmitry Chagin 52de4da6cdSDmitry Chagin #endif /* _KERNEL */ 53de4da6cdSDmitry Chagin 54de4da6cdSDmitry Chagin #endif /* _MACHINE_TIMERREG_H_ */ 55