pcpu.h revision 176877
1/*- 2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 3 * Copyright (c) Peter Wemm <peter@netplex.com.au> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: head/sys/powerpc/include/pcpu.h 176877 2008-03-06 16:59:36Z marcel $ 28 */ 29 30#ifndef _MACHINE_PCPU_H_ 31#define _MACHINE_PCPU_H_ 32 33#ifdef _KERNEL 34#include <machine/cpufunc.h> 35 36struct pmap; 37#define CPUSAVE_LEN 8 38 39#define PCPU_MD_COMMON_FIELDS \ 40 int pc_inside_intr; \ 41 struct pmap *pc_curpmap; /* current pmap */ \ 42 struct thread *pc_fputhread; /* current fpu user */ \ 43 register_t pc_tempsave[CPUSAVE_LEN]; \ 44 register_t pc_disisave[CPUSAVE_LEN]; \ 45 register_t pc_dbsave[CPUSAVE_LEN]; 46 47#define PCPU_MD_AIM_FIELDS 48 49#define BOOKE_CRITSAVE_LEN (CPUSAVE_LEN + 2) 50#define BOOKE_TLB_MAXNEST 3 51#define BOOKE_TLB_SAVELEN 16 52#define BOOKE_TLBSAVE_LEN (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST) 53 54#define PCPU_MD_BOOKE_FIELDS \ 55 register_t pc_booke_critsave[BOOKE_CRITSAVE_LEN]; \ 56 register_t pc_booke_mchksave[CPUSAVE_LEN]; \ 57 register_t pc_booke_tlbsave[BOOKE_TLBSAVE_LEN]; \ 58 register_t pc_booke_tlb_level; 59 60/* Definitions for register offsets within the exception tmp save areas */ 61#define CPUSAVE_R28 0 /* where r28 gets saved */ 62#define CPUSAVE_R29 1 /* where r29 gets saved */ 63#define CPUSAVE_R30 2 /* where r30 gets saved */ 64#define CPUSAVE_R31 3 /* where r31 gets saved */ 65#define CPUSAVE_AIM_DAR 4 /* where SPR_DAR gets saved */ 66#define CPUSAVE_AIM_DSISR 5 /* where SPR_DSISR gets saved */ 67#define CPUSAVE_BOOKE_DEAR 4 /* where SPR_DEAR gets saved */ 68#define CPUSAVE_BOOKE_ESR 5 /* where SPR_ESR gets saved */ 69#define CPUSAVE_SRR0 6 /* where SRR0 gets saved */ 70#define CPUSAVE_SRR1 7 /* where SRR1 gets saved */ 71 72/* Book-E TLBSAVE is more elaborate */ 73#define TLBSAVE_BOOKE_LR 0 74#define TLBSAVE_BOOKE_CR 1 75#define TLBSAVE_BOOKE_SRR0 2 76#define TLBSAVE_BOOKE_SRR1 3 77#define TLBSAVE_BOOKE_R20 4 78#define TLBSAVE_BOOKE_R21 5 79#define TLBSAVE_BOOKE_R22 6 80#define TLBSAVE_BOOKE_R23 7 81#define TLBSAVE_BOOKE_R24 8 82#define TLBSAVE_BOOKE_R25 9 83#define TLBSAVE_BOOKE_R26 10 84#define TLBSAVE_BOOKE_R27 11 85#define TLBSAVE_BOOKE_R28 12 86#define TLBSAVE_BOOKE_R29 13 87#define TLBSAVE_BOOKE_R30 14 88#define TLBSAVE_BOOKE_R31 15 89 90#ifndef COMPILING_LINT 91#ifdef AIM 92#define PCPU_MD_FIELDS \ 93 PCPU_MD_COMMON_FIELDS \ 94 PCPU_MD_AIM_FIELDS 95#endif 96#ifdef E500 97#define PCPU_MD_FIELDS \ 98 PCPU_MD_COMMON_FIELDS \ 99 PCPU_MD_BOOKE_FIELDS 100#endif 101#else 102#define PCPU_MD_FIELDS \ 103 PCPU_MD_COMMON_FIELDS \ 104 PCPU_MD_AIM_FIELDS \ 105 PCPU_MD_BOOKE_FIELDS 106#endif 107/* 108 * Catch-all for ports (e.g. lsof, used by gtop) 109 */ 110#ifndef PCPU_MD_FIELDS 111#define PCPU_MD_FIELDS \ 112 int pc_md_placeholder 113#endif 114 115#define PCPUP ((struct pcpu *) powerpc_get_pcpup()) 116 117#define PCPU_GET(member) (PCPUP->pc_ ## member) 118 119/* 120 * XXX The implementation of this operation should be made atomic 121 * with respect to preemption. 122 */ 123#define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value)) 124#define PCPU_INC(member) PCPU_ADD(member, 1) 125#define PCPU_PTR(member) (&PCPUP->pc_ ## member) 126#define PCPU_SET(member,value) (PCPUP->pc_ ## member = (value)) 127 128#endif /* _KERNEL */ 129 130#endif /* !_MACHINE_PCPU_H_ */ 131