1 /* $NetBSD: sys_machdep.c,v 1.6 2003/07/15 00:24:42 lukem 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/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: sys_machdep.c,v 1.6 2003/07/15 00:24:42 lukem Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/proc.h> 49 #include <sys/mbuf.h> 50 #include <sys/mount.h> 51 #include <uvm/uvm_extern.h> 52 #include <sys/sysctl.h> 53 #include <sys/sa.h> 54 #include <sys/syscallargs.h> 55 56 #include <machine/sysarch.h> 57 58 /* Prototypes */ 59 static int arm32_sync_icache __P((struct proc *, char *, register_t *)); 60 static int arm32_drain_writebuf __P((struct proc *, char *, register_t *)); 61 62 static int 63 arm32_sync_icache(p, args, retval) 64 struct proc *p; 65 char *args; 66 register_t *retval; 67 { 68 struct arm_sync_icache_args ua; 69 int error; 70 71 if ((error = copyin(args, &ua, sizeof(ua))) != 0) 72 return (error); 73 74 cpu_icache_sync_range(ua.addr, ua.len); 75 76 *retval = 0; 77 return(0); 78 } 79 80 static int 81 arm32_drain_writebuf(p, args, retval) 82 struct proc *p; 83 char *args; 84 register_t *retval; 85 { 86 /* No args. */ 87 88 cpu_drain_writebuf(); 89 90 *retval = 0; 91 return(0); 92 } 93 94 int 95 sys_sysarch(l, v, retval) 96 struct lwp *l; 97 void *v; 98 register_t *retval; 99 { 100 struct sys_sysarch_args /* { 101 syscallarg(int) op; 102 syscallarg(void *) parms; 103 } */ *uap = v; 104 struct proc *p = l->l_proc; 105 int error = 0; 106 107 switch(SCARG(uap, op)) { 108 case ARM_SYNC_ICACHE : 109 error = arm32_sync_icache(p, SCARG(uap, parms), retval); 110 break; 111 112 case ARM_DRAIN_WRITEBUF : 113 error = arm32_drain_writebuf(p, SCARG(uap, parms), retval); 114 break; 115 116 default: 117 error = EINVAL; 118 break; 119 } 120 return (error); 121 } 122 123 /* End of sys_machdep.c */ 124