1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 5 * Copyright (c) Peter Wemm <peter@netplex.com.au> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _MACHINE_PCPU_H_ 33 #define _MACHINE_PCPU_H_ 34 35 #include <machine/cpufunc.h> 36 #include <machine/slb.h> 37 #include <machine/tlb.h> 38 39 struct pmap; 40 struct pvo_entry; 41 #define CPUSAVE_LEN 9 42 43 #define PCPU_MD_COMMON_FIELDS \ 44 int pc_inside_intr; \ 45 struct pmap *pc_curpmap; /* current pmap */ \ 46 struct thread *pc_fputhread; /* current fpu user */ \ 47 struct thread *pc_vecthread; /* current vec user */ \ 48 uintptr_t pc_hwref; \ 49 int pc_bsp; \ 50 volatile int pc_awake; \ 51 uint32_t pc_ipimask; \ 52 register_t pc_tempsave[CPUSAVE_LEN]; \ 53 register_t pc_disisave[CPUSAVE_LEN]; \ 54 register_t pc_dbsave[CPUSAVE_LEN]; \ 55 void *pc_restore; \ 56 vm_offset_t pc_qmap_addr; 57 58 #define PCPU_MD_AIM32_FIELDS \ 59 struct pvo_entry *qmap_pvo; \ 60 struct mtx qmap_lock; \ 61 char __pad[128]; 62 63 #define PCPU_MD_AIM64_FIELDS \ 64 struct slb slb[64]; \ 65 struct slb **userslb; \ 66 register_t slbsave[18]; \ 67 uint8_t slbstack[1024]; \ 68 struct pvo_entry *qmap_pvo; \ 69 struct mtx qmap_lock; \ 70 char __pad[1345]; 71 72 #ifdef __powerpc64__ 73 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM64_FIELDS 74 #else 75 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM32_FIELDS 76 #endif 77 78 #define BOOKE_CRITSAVE_LEN (CPUSAVE_LEN + 2) 79 #define BOOKE_TLB_MAXNEST 3 80 #define BOOKE_TLB_SAVELEN 16 81 #define BOOKE_TLBSAVE_LEN (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST) 82 83 #ifdef __powerpc64__ 84 #define BOOKE_PCPU_PAD 901 85 #else 86 #define BOOKE_PCPU_PAD 429 87 #endif 88 #define PCPU_MD_BOOKE_FIELDS \ 89 register_t critsave[BOOKE_CRITSAVE_LEN]; \ 90 register_t mchksave[CPUSAVE_LEN]; \ 91 register_t tlbsave[BOOKE_TLBSAVE_LEN]; \ 92 register_t tlb_level; \ 93 uintptr_t *tlb_lock; \ 94 int tid_next; \ 95 char __pad[BOOKE_PCPU_PAD]; 96 97 /* Definitions for register offsets within the exception tmp save areas */ 98 #define CPUSAVE_R27 0 /* where r27 gets saved */ 99 #define CPUSAVE_R28 1 /* where r28 gets saved */ 100 #define CPUSAVE_R29 2 /* where r29 gets saved */ 101 #define CPUSAVE_R30 3 /* where r30 gets saved */ 102 #define CPUSAVE_R31 4 /* where r31 gets saved */ 103 #define CPUSAVE_AIM_DAR 5 /* where SPR_DAR gets saved */ 104 #define CPUSAVE_AIM_DSISR 6 /* where SPR_DSISR gets saved */ 105 #define CPUSAVE_BOOKE_DEAR 5 /* where SPR_DEAR gets saved */ 106 #define CPUSAVE_BOOKE_ESR 6 /* where SPR_ESR gets saved */ 107 #define CPUSAVE_SRR0 7 /* where SRR0 gets saved */ 108 #define CPUSAVE_SRR1 8 /* where SRR1 gets saved */ 109 #define BOOKE_CRITSAVE_SRR0 9 /* where real SRR0 gets saved (critical) */ 110 #define BOOKE_CRITSAVE_SRR1 10 /* where real SRR0 gets saved (critical) */ 111 112 /* Book-E TLBSAVE is more elaborate */ 113 #define TLBSAVE_BOOKE_LR 0 114 #define TLBSAVE_BOOKE_CR 1 115 #define TLBSAVE_BOOKE_SRR0 2 116 #define TLBSAVE_BOOKE_SRR1 3 117 #define TLBSAVE_BOOKE_R20 4 118 #define TLBSAVE_BOOKE_R21 5 119 #define TLBSAVE_BOOKE_R22 6 120 #define TLBSAVE_BOOKE_R23 7 121 #define TLBSAVE_BOOKE_R24 8 122 #define TLBSAVE_BOOKE_R25 9 123 #define TLBSAVE_BOOKE_R26 10 124 #define TLBSAVE_BOOKE_R27 11 125 #define TLBSAVE_BOOKE_R28 12 126 #define TLBSAVE_BOOKE_R29 13 127 #define TLBSAVE_BOOKE_R30 14 128 #define TLBSAVE_BOOKE_R31 15 129 130 #define PCPU_MD_FIELDS \ 131 PCPU_MD_COMMON_FIELDS \ 132 union { \ 133 struct { \ 134 PCPU_MD_AIM_FIELDS \ 135 } pc_aim; \ 136 struct { \ 137 PCPU_MD_BOOKE_FIELDS \ 138 } pc_booke; \ 139 } 140 141 #ifdef _KERNEL 142 143 #define pcpup (get_pcpu()) 144 145 static __inline __pure2 struct thread * 146 __curthread(void) 147 { 148 struct thread *td; 149 #ifdef __powerpc64__ 150 __asm __volatile("mr %0,13" : "=r"(td)); 151 #else 152 __asm __volatile("mr %0,2" : "=r"(td)); 153 #endif 154 return (td); 155 } 156 #define curthread (__curthread()) 157 158 #define PCPU_GET(member) (pcpup->pc_ ## member) 159 160 /* 161 * XXX The implementation of this operation should be made atomic 162 * with respect to preemption. 163 */ 164 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value)) 165 #define PCPU_INC(member) PCPU_ADD(member, 1) 166 #define PCPU_PTR(member) (&pcpup->pc_ ## member) 167 #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value)) 168 169 #endif /* _KERNEL */ 170 171 #endif /* !_MACHINE_PCPU_H_ */ 172