/*      $NetBSD: sysarch.h,v 1.15 2021/10/06 05:33:15 skrll Exp $       */

/*
 * Copyright (c) 1996-1997 Mark Brinicombe.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Mark Brinicombe.
 * 4. The name of the company nor the name of the author may be used to
 *    endorse or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _ARM_SYSARCH_H_
#define _ARM_SYSARCH_H_

#include <sys/cdefs.h>

/*
 * Pickup definition of size_t and uintptr_t
 */
#include <machine/ansi.h>
#include <sys/stdint.h>
#ifndef _KERNEL
#include <stdbool.h>
#endif

#ifdef  _BSD_SIZE_T_
typedef _BSD_SIZE_T_ size_t;
#undef  _BSD_SIZE_T_
#endif

/*
 * Architecture specific syscalls (arm)
 */

#define ARM_SYNC_ICACHE         0
#define ARM_DRAIN_WRITEBUF      1
#define ARM_VFP_FPSCR           2
#define ARM_FPU_USED            3

struct arm_sync_icache_args {
        uintptr_t       addr;           /* Virtual start address */
        size_t          len;            /* Region size */
};

struct arm_vfp_fpscr_args {
        uint32_t        fpscr_clear;    /* bits to clear */
        uint32_t        fpscr_set;      /* bits to set */
};

struct arm_unaligned_faults_args {
        bool            enabled;        /* unaligned faults are enabled */
};

#ifndef _KERNEL
__BEGIN_DECLS
int     arm_sync_icache(uintptr_t, size_t);
int     arm_drain_writebuf(void);
int     sysarch(int, void *);
__END_DECLS
#endif

#endif /* !_ARM_SYSARCH_H_ */