/*- * Copyright (c) 2014 Ian Lepore <ian@freebsd.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _ARM_MPCORE_TIMERVAR_H_ #define _ARM_MPCORE_TIMERVAR_H_ /* * This value, passed to arm_tmr_change_frequency() any time before the mpcore * timer device attaches, informs the driver that the mpcore clock frequency can * change on the fly, and thus can't be used as a timecounter. The hardware can * still be used as an eventtimer, as long as each frequency change is * communicated to it with calls to arm_tmr_change_frequency(). */ #define ARM_TMR_FREQUENCY_VARIES -1ULL /* * Inform the mpcore timer driver of a new clock frequency. This can be called * both before and after the mpcore timer driver attaches. */ void arm_tmr_change_frequency(uint64_t newfreq); #endif |