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Annotation of sys/arch/arm/arm/sys_machdep.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: sys_machdep.c,v 1.3 2004/05/19 03:17:07 drahn Exp $   */
        !             2: /*     $NetBSD: sys_machdep.c,v 1.6 2003/07/15 00:24:42 lukem Exp $    */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1995-1997 Mark Brinicombe.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. All advertising materials mentioning features or use of this software
        !            17:  *    must display the following acknowledgement:
        !            18:  *     This product includes software developed by Mark Brinicombe
        !            19:  * 4. The name of the company nor the name of the author may be used to
        !            20:  *    endorse or promote products derived from this software without specific
        !            21:  *    prior written permission.
        !            22:  *
        !            23:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
        !            24:  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
        !            25:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            26:  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
        !            27:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            28:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            29:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            33:  * SUCH DAMAGE.
        !            34:  *
        !            35:  * RiscBSD kernel project
        !            36:  *
        !            37:  * sys_machdep.c
        !            38:  *
        !            39:  * Machine dependant syscalls
        !            40:  *
        !            41:  * Created      : 10/01/96
        !            42:  */
        !            43:
        !            44: #include <sys/param.h>
        !            45: #include <sys/systm.h>
        !            46: #include <sys/proc.h>
        !            47: #include <sys/mbuf.h>
        !            48: #include <sys/mount.h>
        !            49: #include <uvm/uvm_extern.h>
        !            50: #include <sys/sysctl.h>
        !            51: #include <sys/syscallargs.h>
        !            52:
        !            53: #include <machine/sysarch.h>
        !            54:
        !            55: /* Prototypes */
        !            56: static int arm32_sync_icache (struct proc *, char *, register_t *);
        !            57: static int arm32_drain_writebuf (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(p, v, retval)
        !            93:        struct proc *p;
        !            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:        int error = 0;
        !           102:
        !           103:        switch(SCARG(uap, op)) {
        !           104:        case ARM_SYNC_ICACHE :
        !           105:                error = arm32_sync_icache(p, SCARG(uap, parms), retval);
        !           106:                break;
        !           107:
        !           108:        case ARM_DRAIN_WRITEBUF :
        !           109:                error = arm32_drain_writebuf(p, SCARG(uap, parms), retval);
        !           110:                break;
        !           111:
        !           112:        default:
        !           113:                error = EINVAL;
        !           114:                break;
        !           115:        }
        !           116:        return (error);
        !           117: }
        !           118:
        !           119: /* End of sys_machdep.c */