cpu.h revision 210100
1/* $OpenBSD: cpu.h,v 1.4 1998/09/15 10:50:12 pefo Exp $ */ 2 3/*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell and Rick Macklem. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR 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 * Copyright (C) 1989 Digital Equipment Corporation. 35 * Permission to use, copy, modify, and distribute this software and 36 * its documentation for any purpose and without fee is hereby granted, 37 * provided that the above copyright notice appears in all copies. 38 * Digital Equipment Corporation makes no representations about the 39 * suitability of this software for any purpose. It is provided "as is" 40 * without express or implied warranty. 41 * 42 * from: @(#)cpu.h 8.4 (Berkeley) 1/4/94 43 * JNPR: cpu.h,v 1.9.2.2 2007/09/10 08:23:46 girish 44 * $FreeBSD: head/sys/mips/include/cpu.h 210100 2010-07-15 01:58:20Z imp $ 45 */ 46 47#ifndef _MACHINE_CPU_H_ 48#define _MACHINE_CPU_H_ 49 50#include <machine/endian.h> 51 52/* BEGIN: these are going away */ 53 54#define SR_KSU_MASK 0x00000018 55#define SR_KSU_USER 0x00000010 56#define SR_KSU_SUPER 0x00000008 57#define SR_KSU_KERNEL 0x00000000 58 59#define soft_int_mask(softintr) (1 << ((softintr) + 8)) 60#define hard_int_mask(hardintr) (1 << ((hardintr) + 10)) 61 62/* END: These are going away */ 63 64/* 65 * The first TLB entry that write random hits. 66 * TLB entry 0 maps the kernel stack of the currently running thread 67 * TLB entry 1 maps the pcpu area of processor (only for SMP builds) 68 */ 69#define KSTACK_TLB_ENTRY 0 70#ifdef SMP 71#define PCPU_TLB_ENTRY 1 72#define VMWIRED_ENTRIES 2 73#else 74#define VMWIRED_ENTRIES 1 75#endif /* SMP */ 76 77/* 78 * The number of process id entries. 79 */ 80#define VMNUM_PIDS 256 81 82/* 83 * Exported definitions unique to mips cpu support. 84 */ 85 86#ifndef _LOCORE 87#include <machine/cpufunc.h> 88#include <machine/frame.h> 89 90#define TRAPF_USERMODE(framep) (((framep)->sr & SR_KSU_USER) != 0) 91#define TRAPF_PC(framep) ((framep)->pc) 92#define cpu_getstack(td) ((td)->td_frame->sp) 93#define cpu_setstack(td, nsp) ((td)->td_frame->sp = (nsp)) 94#define cpu_spinwait() /* nothing */ 95 96/* 97 * A machine-independent interface to the CPU's counter. 98 */ 99static __inline uint64_t 100get_cyclecount(void) 101{ 102 return (mips_rd_count()); 103} 104#endif /* !_LOCORE */ 105 106#if defined(_KERNEL) && !defined(_LOCORE) 107 108extern char btext[]; 109extern char etext[]; 110 111void swi_vm(void *); 112void cpu_halt(void); 113void cpu_reset(void); 114 115#endif /* _KERNEL */ 116#endif /* !_MACHINE_CPU_H_ */ 117