f4c01f1508
ARM_TP_ADDRESS, where the tp will be stored. On CPUs that support it, a cache line will be allocated and locked for this address, so that it will never go to RAM. On CPUs that does not, a page is allocated for it (it will be a bit slower, and is wrong for SMP, but should be fine for UP). The tp is still stored in the mdthread struct, and at each context switch, ARM_TP_ADDRESS gets updated. Suggested by: davidxu
72 lines
2.4 KiB
C
72 lines
2.4 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 <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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#define ARM_TP_ADDRESS 0xe0000000 /* Magic */
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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 /* !_ARM_SYSARCH_H_ */
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