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 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_PCPU_H_ 31 #define _MACHINE_PCPU_H_ 32 33 #include <machine/cpufunc.h> 34 #include <machine/slb.h> 35 #include <machine/tlb.h> 36 37 struct pmap; 38 #define CPUSAVE_LEN 9 39 40 #define PCPU_MD_COMMON_FIELDS \ 41 int pc_inside_intr; \ 42 struct pmap *pc_curpmap; /* current pmap */ \ 43 struct thread *pc_fputhread; /* current fpu user */ \ 44 struct thread *pc_vecthread; /* current vec user */ \ 45 uintptr_t pc_hwref; \ 46 uint32_t pc_pir; \ 47 int pc_bsp; \ 48 volatile int pc_awake; \ 49 uint32_t pc_ipimask; \ 50 register_t pc_tempsave[CPUSAVE_LEN]; \ 51 register_t pc_disisave[CPUSAVE_LEN]; \ 52 register_t pc_dbsave[CPUSAVE_LEN]; \ 53 void *pc_restore; 54 55 #define PCPU_MD_AIM32_FIELDS \ 56 /* char __pad[0] */ 57 58 #define PCPU_MD_AIM64_FIELDS \ 59 struct slb pc_slb[64]; \ 60 struct slb **pc_userslb; \ 61 register_t pc_slbsave[18]; \ 62 uint8_t pc_slbstack[1024]; \ 63 char __pad[1137] 64 65 #ifdef __powerpc64__ 66 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM64_FIELDS 67 #else 68 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM32_FIELDS 69 #endif 70 71 #define BOOKE_CRITSAVE_LEN (CPUSAVE_LEN + 2) 72 #define BOOKE_TLB_MAXNEST 3 73 #define BOOKE_TLB_SAVELEN 16 74 #define BOOKE_TLBSAVE_LEN (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST) 75 76 #define PCPU_MD_BOOKE_FIELDS \ 77 register_t pc_booke_critsave[BOOKE_CRITSAVE_LEN]; \ 78 register_t pc_booke_mchksave[CPUSAVE_LEN]; \ 79 register_t pc_booke_tlbsave[BOOKE_TLBSAVE_LEN]; \ 80 register_t pc_booke_tlb_level; \ 81 uint32_t *pc_booke_tlb_lock; \ 82 int pc_tid_next; \ 83 char __pad[173] 84 85 /* Definitions for register offsets within the exception tmp save areas */ 86 #define CPUSAVE_R27 0 /* where r27 gets saved */ 87 #define CPUSAVE_R28 1 /* where r28 gets saved */ 88 #define CPUSAVE_R29 2 /* where r29 gets saved */ 89 #define CPUSAVE_R30 3 /* where r30 gets saved */ 90 #define CPUSAVE_R31 4 /* where r31 gets saved */ 91 #define CPUSAVE_AIM_DAR 5 /* where SPR_DAR gets saved */ 92 #define CPUSAVE_AIM_DSISR 6 /* where SPR_DSISR gets saved */ 93 #define CPUSAVE_BOOKE_DEAR 5 /* where SPR_DEAR gets saved */ 94 #define CPUSAVE_BOOKE_ESR 6 /* where SPR_ESR gets saved */ 95 #define CPUSAVE_SRR0 7 /* where SRR0 gets saved */ 96 #define CPUSAVE_SRR1 8 /* where SRR1 gets saved */ 97 98 /* Book-E TLBSAVE is more elaborate */ 99 #define TLBSAVE_BOOKE_LR 0 100 #define TLBSAVE_BOOKE_CR 1 101 #define TLBSAVE_BOOKE_SRR0 2 102 #define TLBSAVE_BOOKE_SRR1 3 103 #define TLBSAVE_BOOKE_R20 4 104 #define TLBSAVE_BOOKE_R21 5 105 #define TLBSAVE_BOOKE_R22 6 106 #define TLBSAVE_BOOKE_R23 7 107 #define TLBSAVE_BOOKE_R24 8 108 #define TLBSAVE_BOOKE_R25 9 109 #define TLBSAVE_BOOKE_R26 10 110 #define TLBSAVE_BOOKE_R27 11 111 #define TLBSAVE_BOOKE_R28 12 112 #define TLBSAVE_BOOKE_R29 13 113 #define TLBSAVE_BOOKE_R30 14 114 #define TLBSAVE_BOOKE_R31 15 115 116 #ifdef AIM 117 #define PCPU_MD_FIELDS \ 118 PCPU_MD_COMMON_FIELDS \ 119 PCPU_MD_AIM_FIELDS 120 #endif 121 #if defined(BOOKE) 122 #define PCPU_MD_FIELDS \ 123 PCPU_MD_COMMON_FIELDS \ 124 PCPU_MD_BOOKE_FIELDS 125 #endif 126 127 /* 128 * Catch-all for ports (e.g. lsof, used by gtop) 129 */ 130 #ifndef PCPU_MD_FIELDS 131 #define PCPU_MD_FIELDS \ 132 int pc_md_placeholder[32] 133 #endif 134 135 #ifdef _KERNEL 136 137 #define pcpup ((struct pcpu *) powerpc_get_pcpup()) 138 139 static __inline __pure2 struct thread * 140 __curthread(void) 141 { 142 struct thread *td; 143 #ifdef __powerpc64__ 144 __asm __volatile("mr %0,13" : "=r"(td)); 145 #else 146 __asm __volatile("mr %0,2" : "=r"(td)); 147 #endif 148 return (td); 149 } 150 #define curthread (__curthread()) 151 152 #define PCPU_GET(member) (pcpup->pc_ ## member) 153 154 /* 155 * XXX The implementation of this operation should be made atomic 156 * with respect to preemption. 157 */ 158 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value)) 159 #define PCPU_INC(member) PCPU_ADD(member, 1) 160 #define PCPU_PTR(member) (&pcpup->pc_ ## member) 161 #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value)) 162 163 #endif /* _KERNEL */ 164 165 #endif /* !_MACHINE_PCPU_H_ */ 166