1 /* $NetBSD: sys_machdep.c,v 1.8 2007/02/09 21:55:02 ad 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 1.8 2007/02/09 21:55:02 ad 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/syscallargs.h> 54 55 #include <machine/sysarch.h> 56 57 /* Prototypes */ 58 static int arm32_sync_icache __P((struct proc *, char *, register_t *)); 59 static int arm32_drain_writebuf __P((struct proc *, char *, register_t *)); 60 61 static int 62 arm32_sync_icache(p, args, retval) 63 struct proc *p; 64 char *args; 65 register_t *retval; 66 { 67 struct arm_sync_icache_args ua; 68 int error; 69 70 if ((error = copyin(args, &ua, sizeof(ua))) != 0) 71 return (error); 72 73 cpu_icache_sync_range(ua.addr, ua.len); 74 75 *retval = 0; 76 return(0); 77 } 78 79 static int 80 arm32_drain_writebuf(p, args, retval) 81 struct proc *p; 82 char *args; 83 register_t *retval; 84 { 85 /* No args. */ 86 87 cpu_drain_writebuf(); 88 89 *retval = 0; 90 return(0); 91 } 92 93 int 94 sys_sysarch(l, v, retval) 95 struct lwp *l; 96 void *v; 97 register_t *retval; 98 { 99 struct sys_sysarch_args /* { 100 syscallarg(int) op; 101 syscallarg(void *) parms; 102 } */ *uap = v; 103 struct proc *p = l->l_proc; 104 int error = 0; 105 106 switch(SCARG(uap, op)) { 107 case ARM_SYNC_ICACHE : 108 error = arm32_sync_icache(p, SCARG(uap, parms), retval); 109 break; 110 111 case ARM_DRAIN_WRITEBUF : 112 error = arm32_drain_writebuf(p, SCARG(uap, parms), retval); 113 break; 114 115 default: 116 error = EINVAL; 117 break; 118 } 119 return (error); 120 } 121 122 /* End of sys_machdep.c */ 123