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      1 /*	$NetBSD: sysarch.h,v 1.15 2021/10/06 05:33:15 skrll Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996-1997 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 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 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 
     35 #ifndef _ARM_SYSARCH_H_
     36 #define _ARM_SYSARCH_H_
     37 
     38 #include <sys/cdefs.h>
     39 
     40 /*
     41  * Pickup definition of size_t and uintptr_t
     42  */
     43 #include <machine/ansi.h>
     44 #include <sys/stdint.h>
     45 #ifndef _KERNEL
     46 #include <stdbool.h>
     47 #endif
     48 
     49 #ifdef	_BSD_SIZE_T_
     50 typedef	_BSD_SIZE_T_ size_t;
     51 #undef	_BSD_SIZE_T_
     52 #endif
     53 
     54 /*
     55  * Architecture specific syscalls (arm)
     56  */
     57 
     58 #define ARM_SYNC_ICACHE		0
     59 #define ARM_DRAIN_WRITEBUF	1
     60 #define ARM_VFP_FPSCR		2
     61 #define ARM_FPU_USED		3
     62 
     63 struct arm_sync_icache_args {
     64 	uintptr_t	addr;		/* Virtual start address */
     65 	size_t		len;		/* Region size */
     66 };
     67 
     68 struct arm_vfp_fpscr_args {
     69 	uint32_t	fpscr_clear;	/* bits to clear */
     70 	uint32_t	fpscr_set;	/* bits to set */
     71 };
     72 
     73 struct arm_unaligned_faults_args {
     74 	bool		enabled;	/* unaligned faults are enabled */
     75 };
     76 
     77 #ifndef _KERNEL
     78 __BEGIN_DECLS
     79 int	arm_sync_icache(uintptr_t, size_t);
     80 int	arm_drain_writebuf(void);
     81 int	sysarch(int, void *);
     82 __END_DECLS
     83 #endif
     84 
     85 #endif /* !_ARM_SYSARCH_H_ */
     86