1 /* $NetBSD: sysarch.h,v 1.5 2003/09/11 09:40:12 kleink Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-4-Clause 5 * 6 * Copyright (c) 1996-1997 Mark Brinicombe. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Mark Brinicombe. 20 * 4. The name of the company nor the name of the author may be used to 21 * endorse or promote products derived from this software without specific 22 * prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 /* $FreeBSD$ */ 38 39 #ifndef _ARM_SYSARCH_H_ 40 #define _ARM_SYSARCH_H_ 41 42 #include <machine/armreg.h> 43 44 /* 45 * The ARM_TP_ADDRESS points to a special purpose page, which is used as local 46 * store for the ARM per-thread data and Restartable Atomic Sequences support. 47 * Put it just above the "high" vectors' page. 48 * The cpu_switch() code assumes ARM_RAS_START is ARM_TP_ADDRESS + 4, and 49 * ARM_RAS_END is ARM_TP_ADDRESS + 8, so if that ever changes, be sure to 50 * update the cpu_switch() (and cpu_throw()) code as well. 51 * In addition, code in arm/include/atomic.h and arm/arm/exception.S 52 * assumes that ARM_RAS_END is at ARM_RAS_START+4, so be sure to update those 53 * if ARM_RAS_END moves in relation to ARM_RAS_START (look for occurrences 54 * of ldr/str rm,[rn, #4]). 55 */ 56 57 /* ARM_TP_ADDRESS is needed for processors that don't support 58 * the exclusive-access opcodes introduced with ARMv6K. */ 59 #if __ARM_ARCH <= 5 60 #define ARM_TP_ADDRESS (ARM_VECTORS_HIGH + 0x1000) 61 #define ARM_RAS_START (ARM_TP_ADDRESS + 4) 62 #define ARM_RAS_END (ARM_TP_ADDRESS + 8) 63 #endif 64 65 #ifndef LOCORE 66 #ifndef __ASSEMBLER__ 67 68 /* 69 * Pickup definition of various __types. 70 */ 71 #include <sys/_types.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 #define ARM_GET_VFPSTATE 4 82 83 struct arm_sync_icache_args { 84 __uintptr_t addr; /* Virtual start address */ 85 __size_t len; /* Region size */ 86 }; 87 88 struct arm_get_vfpstate_args { 89 __size_t mc_vfp_size; 90 void *mc_vfp; 91 }; 92 93 #ifndef _KERNEL 94 __BEGIN_DECLS 95 int arm_sync_icache(unsigned int, int); 96 int arm_drain_writebuf(void); 97 int sysarch(int, void *); 98 __END_DECLS 99 #endif 100 101 #endif /* __ASSEMBLER__ */ 102 #endif /* LOCORE */ 103 104 #endif /* !_ARM_SYSARCH_H_ */ 105