1 /* $NetBSD: sys_machdep.c,v 1.5 2003/01/17 22:28:49 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1995-1997 Mark Brinicombe. 5 * All rights reserved. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Mark Brinicombe 18 * 4. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * RiscBSD kernel project 35 * 36 * sys_machdep.c 37 * 38 * Machine dependant syscalls 39 * 40 * Created : 10/01/96 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/proc.h> 46 #include <sys/mbuf.h> 47 #include <sys/mount.h> 48 #include <uvm/uvm_extern.h> 49 #include <sys/sysctl.h> 50 #include <sys/sa.h> 51 #include <sys/syscallargs.h> 52 53 #include <machine/sysarch.h> 54 55 /* Prototypes */ 56 static int arm32_sync_icache __P((struct proc *, char *, register_t *)); 57 static int arm32_drain_writebuf __P((struct proc *, char *, register_t *)); 58 59 static int 60 arm32_sync_icache(p, args, retval) 61 struct proc *p; 62 char *args; 63 register_t *retval; 64 { 65 struct arm_sync_icache_args ua; 66 int error; 67 68 if ((error = copyin(args, &ua, sizeof(ua))) != 0) 69 return (error); 70 71 cpu_icache_sync_range(ua.addr, ua.len); 72 73 *retval = 0; 74 return(0); 75 } 76 77 static int 78 arm32_drain_writebuf(p, args, retval) 79 struct proc *p; 80 char *args; 81 register_t *retval; 82 { 83 /* No args. */ 84 85 cpu_drain_writebuf(); 86 87 *retval = 0; 88 return(0); 89 } 90 91 int 92 sys_sysarch(l, v, retval) 93 struct lwp *l; 94 void *v; 95 register_t *retval; 96 { 97 struct sys_sysarch_args /* { 98 syscallarg(int) op; 99 syscallarg(void *) parms; 100 } */ *uap = v; 101 struct proc *p = l->l_proc; 102 int error = 0; 103 104 switch(SCARG(uap, op)) { 105 case ARM_SYNC_ICACHE : 106 error = arm32_sync_icache(p, SCARG(uap, parms), retval); 107 break; 108 109 case ARM_DRAIN_WRITEBUF : 110 error = arm32_drain_writebuf(p, SCARG(uap, parms), retval); 111 break; 112 113 default: 114 error = EINVAL; 115 break; 116 } 117 return (error); 118 } 119 120 /* End of sys_machdep.c */ 121