1 /* $NetBSD: sysarch.h,v 1.5 2003/09/11 09:40:12 kleink 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 /* $FreeBSD$ */ 36 37 #ifndef _ARM_SYSARCH_H_ 38 #define _ARM_SYSARCH_H_ 39 40 #include <machine/armreg.h> 41 42 /* 43 * The ARM_TP_ADDRESS points to a special purpose page, which is used as local 44 * store for the ARM per-thread data and Restartable Atomic Sequences support. 45 * Put it just above the "high" vectors' page. 46 * The cpu_switch() code assumes ARM_RAS_START is ARM_TP_ADDRESS + 4, and 47 * ARM_RAS_END is ARM_TP_ADDRESS + 8, so if that ever changes, be sure to 48 * update the cpu_switch() (and cpu_throw()) code as well. 49 * In addition, code in arm/include/atomic.h and arm/arm/exception.S 50 * assumes that ARM_RAS_END is at ARM_RAS_START+4, so be sure to update those 51 * if ARM_RAS_END moves in relation to ARM_RAS_START (look for occurrences 52 * of ldr/str rm,[rn, #4]). 53 */ 54 55 /* ARM_TP_ADDRESS is needed for processors that don't support 56 * the exclusive-access opcodes introduced with ARMv6K. */ 57 #if __ARM_ARCH <= 5 58 #define ARM_TP_ADDRESS (ARM_VECTORS_HIGH + 0x1000) 59 #define ARM_RAS_START (ARM_TP_ADDRESS + 4) 60 #define ARM_RAS_END (ARM_TP_ADDRESS + 8) 61 #endif 62 63 #ifndef LOCORE 64 #ifndef __ASSEMBLER__ 65 66 #include <sys/cdefs.h> 67 68 /* 69 * Pickup definition of uintptr_t 70 */ 71 #include <sys/stdint.h> 72 73 /* 74 * Architecture specific syscalls (arm) 75 */ 76 77 #define ARM_SYNC_ICACHE 0 78 #define ARM_DRAIN_WRITEBUF 1 79 #define ARM_SET_TP 2 80 #define ARM_GET_TP 3 81 82 struct arm_sync_icache_args { 83 uintptr_t addr; /* Virtual start address */ 84 size_t len; /* Region size */ 85 }; 86 87 #ifndef _KERNEL 88 __BEGIN_DECLS 89 int arm_sync_icache (u_int addr, int len); 90 int arm_drain_writebuf (void); 91 int sysarch(int, void *); 92 __END_DECLS 93 #endif 94 95 #endif /* __ASSEMBLER__ */ 96 #endif /* LOCORE */ 97 98 #endif /* !_ARM_SYSARCH_H_ */ 99