1 /*- 2 * Copyright (c) 2017 Mark Johnston <markj@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _LINUX_HRTIMER_H_ 30 #define _LINUX_HRTIMER_H_ 31 32 #include <sys/_callout.h> 33 #include <sys/_mutex.h> 34 35 #include <linux/ktime.h> 36 #include <linux/timer.h> 37 38 enum hrtimer_mode { 39 HRTIMER_MODE_REL, 40 }; 41 42 enum hrtimer_restart { 43 HRTIMER_RESTART, 44 HRTIMER_NORESTART, 45 }; 46 47 struct hrtimer { 48 enum hrtimer_restart (*function)(struct hrtimer *); 49 struct mtx mtx; 50 struct callout callout; 51 uint32_t flags; 52 }; 53 54 #define hrtimer_active(hrtimer) linux_hrtimer_active(hrtimer) 55 #define hrtimer_cancel(hrtimer) linux_hrtimer_cancel(hrtimer) 56 #define hrtimer_init(hrtimer, clock, mode) do { \ 57 CTASSERT((clock) == CLOCK_MONOTONIC); \ 58 CTASSERT((mode) == HRTIMER_MODE_REL); \ 59 linux_hrtimer_init(hrtimer); \ 60 } while (0) 61 #define hrtimer_set_expires(hrtimer, time) \ 62 linux_hrtimer_set_expires(hrtimer, time) 63 #define hrtimer_start(hrtimer, time, mode) do { \ 64 CTASSERT((mode) == HRTIMER_MODE_REL); \ 65 linux_hrtimer_start(hrtimer, time); \ 66 } while (0) 67 #define hrtimer_start_range_ns(hrtimer, time, prec, mode) do { \ 68 CTASSERT((mode) == HRTIMER_MODE_REL); \ 69 linux_hrtimer_start_range_ns(hrtimer, time, prec); \ 70 } while (0) 71 72 bool linux_hrtimer_active(struct hrtimer *); 73 int linux_hrtimer_cancel(struct hrtimer *); 74 void linux_hrtimer_init(struct hrtimer *); 75 void linux_hrtimer_set_expires(struct hrtimer *, ktime_t); 76 void linux_hrtimer_start(struct hrtimer *, ktime_t); 77 void linux_hrtimer_start_range_ns(struct hrtimer *, ktime_t, int64_t); 78 79 #endif /* _LINUX_HRTIMER_H_ */ 80