11.13Sriastrad/* $NetBSD: mutex.h,v 1.13 2023/07/12 12:50:13 riastradh Exp $ */ 21.2Sad 31.2Sad/*- 41.2Sad * Copyright (c) 2002, 2007 The NetBSD Foundation, Inc. 51.2Sad * All rights reserved. 61.2Sad * 71.2Sad * This code is derived from software contributed to The NetBSD Foundation 81.2Sad * by Jason R. Thorpe and Andrew Doran. 91.2Sad * 101.2Sad * Redistribution and use in source and binary forms, with or without 111.2Sad * modification, are permitted provided that the following conditions 121.2Sad * are met: 131.2Sad * 1. Redistributions of source code must retain the above copyright 141.2Sad * notice, this list of conditions and the following disclaimer. 151.2Sad * 2. Redistributions in binary form must reproduce the above copyright 161.2Sad * notice, this list of conditions and the following disclaimer in the 171.2Sad * documentation and/or other materials provided with the distribution. 181.2Sad * 191.2Sad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 201.2Sad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 211.2Sad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 221.2Sad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 231.2Sad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 241.2Sad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 251.2Sad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 261.2Sad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 271.2Sad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 281.2Sad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 291.2Sad * POSSIBILITY OF SUCH DAMAGE. 301.2Sad */ 311.2Sad 321.2Sad#ifndef _SH3_MUTEX_H_ 331.2Sad#define _SH3_MUTEX_H_ 341.2Sad 351.13Sriastrad#include <sys/types.h> 361.13Sriastrad 371.2Sad#ifndef __MUTEX_PRIVATE 381.2Sad 391.2Sadstruct kmutex { 401.2Sad uintptr_t mtx_pad1; 411.2Sad}; 421.2Sad 431.2Sad#else /* __MUTEX_PRIVATE */ 441.2Sad 451.12Sriastrad#include <machine/intr.h> 461.12Sriastrad 471.2Sadstruct kmutex { 481.2Sad union { 491.2Sad /* Adaptive mutex */ 501.5Suwe volatile uintptr_t mtxa_owner; /* 0-3 */ 511.2Sad 521.5Suwe /* Spin mutex */ 531.2Sad struct { 541.5Suwe volatile uint8_t mtxs_dummy; 551.5Suwe ipl_cookie_t mtxs_ipl; 561.5Suwe __cpu_simple_lock_t mtxs_lock; 571.5Suwe volatile uint8_t mtxs_unused; 581.2Sad } s; 591.2Sad } u; 601.2Sad}; 611.2Sad 621.5Suwe#define mtx_owner u.mtxa_owner 631.5Suwe#define mtx_ipl u.s.mtxs_ipl 641.5Suwe#define mtx_lock u.s.mtxs_lock 651.5Suwe 661.5Suwe#define __HAVE_SIMPLE_MUTEXES 1 671.6Suwe#define __HAVE_MUTEX_STUBS 1 681.5Suwe 691.2Sad#endif /* __MUTEX_PRIVATE */ 701.2Sad 711.2Sad#endif /* _SH3_MUTEX_H_ */ 72