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sys_machdep.c revision 1.7.20.1 
      1 /*	$NetBSD: sys_machdep.c,v 1.7.20.1 2007/01/30 13:49:33 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 1.7.20.1 2007/01/30 13:49:33 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