1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 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, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)sys_machdep.c 5.5 (Berkeley) 1/19/91 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/proc.h> 42 #include <sys/sysproto.h> 43 #include <sys/syscall.h> 44 #include <sys/sysent.h> 45 46 #include <machine/sysarch.h> 47 48 #ifndef _SYS_SYSPROTO_H_ 49 struct sysarch_args { 50 int op; 51 char *parms; 52 }; 53 #endif 54 55 /* Prototypes */ 56 static int arm32_sync_icache (struct thread *, void *); 57 static int arm32_drain_writebuf(struct thread *, void *); 58 59 static int 60 arm32_sync_icache(struct thread *td, void *args) 61 { 62 struct arm_sync_icache_args ua; 63 int error; 64 65 if ((error = copyin(args, &ua, sizeof(ua))) != 0) 66 return (error); 67 68 cpu_icache_sync_range(ua.addr, ua.len); 69 70 td->td_retval[0] = 0; 71 return (0); 72 } 73 74 static int 75 arm32_drain_writebuf(struct thread *td, void *args) 76 { 77 /* No args. */ 78 79 td->td_retval[0] = 0; 80 cpu_drain_writebuf(); 81 return (0); 82 } 83 84 static int 85 arm32_set_tp(struct thread *td, void *args) 86 { 87 88 td->td_md.md_tp = args; 89 return (0); 90 } 91 92 static int 93 arm32_get_tp(struct thread *td, void *args) 94 { 95 96 td->td_retval[0] = (uint32_t)td->td_md.md_tp; 97 return (0); 98 } 99 100 int 101 sysarch(td, uap) 102 struct thread *td; 103 register struct sysarch_args *uap; 104 { 105 int error; 106 107 switch (uap->op) { 108 case ARM_SYNC_ICACHE : 109 error = arm32_sync_icache(td, uap->parms); 110 break; 111 case ARM_DRAIN_WRITEBUF : 112 error = arm32_drain_writebuf(td, uap->parms); 113 break; 114 case ARM_SET_TP: 115 error = arm32_set_tp(td, uap->parms); 116 break; 117 case ARM_GET_TP: 118 error = arm32_get_tp(td, uap->parms); 119 break; 120 default: 121 error = EINVAL; 122 break; 123 } 124 return (error); 125 } 126