1 /* $NetBSD: sys_machdep.c,v 1.10 2008/04/27 18:58:44 matt 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 1.10 2008/04/27 18:58:44 matt 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(struct lwp *, const void *, register_t *); 59 static int arm32_drain_writebuf(struct lwp *, const void *, register_t *); 60 61 static int 62 arm32_sync_icache(struct lwp *l, const void *args, register_t *retval) 63 { 64 struct arm_sync_icache_args ua; 65 int error; 66 67 if ((error = copyin(args, &ua, sizeof(ua))) != 0) 68 return (error); 69 70 pmap_icache_sync_range(vm_map_pmap(&l->l_proc->p_vmspace->vm_map), 71 ua.addr, ua.addr + ua.len); 72 73 *retval = 0; 74 return(0); 75 } 76 77 static int 78 arm32_drain_writebuf(struct lwp *l, const void *args, register_t *retval) 79 { 80 /* No args. */ 81 82 cpu_drain_writebuf(); 83 84 *retval = 0; 85 return(0); 86 } 87 88 int 89 sys_sysarch(struct lwp *l, const struct sys_sysarch_args *uap, register_t *retval) 90 { 91 /* { 92 syscallarg(int) op; 93 syscallarg(void *) parms; 94 } */ 95 int error = 0; 96 97 switch(SCARG(uap, op)) { 98 case ARM_SYNC_ICACHE : 99 error = arm32_sync_icache(l, SCARG(uap, parms), retval); 100 break; 101 102 case ARM_DRAIN_WRITEBUF : 103 error = arm32_drain_writebuf(l, SCARG(uap, parms), retval); 104 break; 105 106 default: 107 error = EINVAL; 108 break; 109 } 110 return (error); 111 } 112 113 /* End of sys_machdep.c */ 114