1 /*- 2 * Copyright (c) 2022 The FreeBSD Foundation 3 * 4 * This software was developed by Andrew Turner under sponsorship from 5 * the FreeBSD Foundation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 31 #include <sys/param.h> 32 33 #include <machine/atomic.h> 34 #include <machine/ifunc.h> 35 36 int casueword32_llsc(volatile uint32_t *, uint32_t, uint32_t *, uint32_t); 37 int casueword32_lse(volatile uint32_t *, uint32_t, uint32_t *, uint32_t); 38 39 int casueword_llsc(volatile u_long *, u_long, u_long *, u_long); 40 int casueword_lse(volatile u_long *, u_long, u_long *, u_long); 41 42 DEFINE_IFUNC(, int, casueword32, (volatile uint32_t *base, uint32_t oldval, 43 uint32_t *oldvalp, uint32_t newval)) 44 { 45 if (lse_supported) 46 return (casueword32_lse); 47 48 return (casueword32_llsc); 49 } 50 51 DEFINE_IFUNC(, int, casueword, (volatile u_long *base, u_long oldval, 52 u_long *oldvalp, u_long newval)) 53 { 54 if (lse_supported) 55 return (casueword_lse); 56 57 return (casueword_llsc); 58 } 59