1/* 2 * Copyright (c) 2015 Martin Lucina. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 14 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26#include <sys/cdefs.h> 27#include <sys/param.h> 28#include <sys/cpu.h> 29#include <sys/kernel.h> 30#include <sys/module.h> 31#include <sys/timetc.h> 32 33#include "bmktc_user.h" 34 35MODULE(MODULE_CLASS_MISC, bmktc, NULL); 36 37static u_int 38bmktc_get(struct timecounter *tc) 39{ 40 41 return rumpcomp_bmktc_gettime(); 42} 43 44static struct timecounter bmktc = { 45 .tc_get_timecount = bmktc_get, 46 .tc_poll_pps = NULL, 47 .tc_counter_mask = ~0, 48 .tc_frequency = 1000000000ULL, 49 .tc_name = "bmktc", 50 .tc_quality = 100, 51}; 52 53static int 54bmktc_modcmd(modcmd_t cmd, void *arg) 55{ 56 57 switch (cmd) { 58 case MODULE_CMD_INIT: 59 tc_init(&bmktc); 60 break; 61 62 case MODULE_CMD_FINI: 63 tc_detach(&bmktc); 64 break; 65 66 default: 67 return ENOTTY; 68 } 69 70 return 0; 71} 72