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102 lines
3.5 KiB
C
102 lines
3.5 KiB
C
/* $NetBSD: sysarch.h,v 1.5 2003/09/11 09:40:12 kleink Exp $ */
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/*-
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* Copyright (c) 1996-1997 Mark Brinicombe.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Brinicombe.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#ifndef _ARM_SYSARCH_H_
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#define _ARM_SYSARCH_H_
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#include <machine/armreg.h>
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/*
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* The ARM_TP_ADDRESS points to a special purpose page, which is used as local
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* store for the ARM per-thread data and Restartable Atomic Sequences support.
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* Put it just above the "high" vectors' page.
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* The cpu_switch() code assumes ARM_RAS_START is ARM_TP_ADDRESS + 4, and
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* ARM_RAS_END is ARM_TP_ADDRESS + 8, so if that ever changes, be sure to
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* update the cpu_switch() (and cpu_throw()) code as well.
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* In addition, code in arm/include/atomic.h and arm/include/asmacros.h
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* assumes that ARM_RAS_END is at ARM_RAS_START+4, so be sure to update those
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* if ARM_RAS_END moves in relation to ARM_RAS_START (look for occurrences
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* of ldr/str rm,[rn, #4]).
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*/
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/* ARM_TP_ADDRESS is needed for processors that don't support
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* the exclusive-access opcodes introduced with ARMv6K. */
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/* TODO: #if !defined(_HAVE_ARMv6K_INSTRUCTIONS) */
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#if !defined (__ARM_ARCH_7__) && \
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!defined (__ARM_ARCH_7A__) && \
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!defined (__ARM_ARCH_6K__) && \
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!defined (__ARM_ARCH_6ZK__)
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#define ARM_TP_ADDRESS (ARM_VECTORS_HIGH + 0x1000)
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#define ARM_RAS_START (ARM_TP_ADDRESS + 4)
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#define ARM_RAS_END (ARM_TP_ADDRESS + 8)
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#endif
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#ifndef LOCORE
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#ifndef __ASSEMBLER__
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#include <sys/cdefs.h>
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/*
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* Pickup definition of uintptr_t
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*/
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#include <sys/stdint.h>
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/*
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* Architecture specific syscalls (arm)
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*/
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#define ARM_SYNC_ICACHE 0
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#define ARM_DRAIN_WRITEBUF 1
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#define ARM_SET_TP 2
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#define ARM_GET_TP 3
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struct arm_sync_icache_args {
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uintptr_t addr; /* Virtual start address */
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size_t len; /* Region size */
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};
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#ifndef _KERNEL
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__BEGIN_DECLS
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int arm_sync_icache (u_int addr, int len);
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int arm_drain_writebuf (void);
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int sysarch(int, void *);
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__END_DECLS
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#endif
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#endif /* __ASSEMBLER__ */
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#endif /* LOCORE */
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#endif /* !_ARM_SYSARCH_H_ */
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