1 /* 2 * Copyright (c) 2007 Artur Grabowski <art@openbsd.org> 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #ifndef _MACHINE_MPLOCK_H_ 18 #define _MACHINE_MPLOCK_H_ 19 20 struct __mp_lock { 21 volatile struct cpu_info *mpl_cpu; 22 volatile int mpl_count; 23 }; 24 25 #ifndef _LOCORE 26 27 void __mp_lock_init(struct __mp_lock *); 28 void __mp_lock(struct __mp_lock *); 29 void __mp_unlock(struct __mp_lock *); 30 int __mp_release_all(struct __mp_lock *); 31 int __mp_release_all_but_one(struct __mp_lock *); 32 void __mp_acquire_count(struct __mp_lock *, int); 33 int __mp_lock_held(struct __mp_lock *); 34 35 #endif 36 37 #endif 38