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 struct thread *pc_htmthread; /* current htm user */ \ 49 uintptr_t pc_hwref; \ 50 int pc_bsp; \ 51 volatile int pc_awake; \ 52 uint32_t pc_ipimask; \ 53 register_t pc_tempsave[CPUSAVE_LEN]; \ 54 register_t pc_disisave[CPUSAVE_LEN]; \ 55 register_t pc_dbsave[CPUSAVE_LEN]; \ 56 void *pc_restore; \ 57 vm_offset_t pc_qmap_addr; 58 59 #define PCPU_MD_AIM32_FIELDS \ 60 struct pvo_entry *qmap_pvo; \ 61 struct mtx qmap_lock; \ 62 char __pad[128]; 63 64 #define PCPU_MD_AIM64_FIELDS \ 65 struct slb slb[64]; \ 66 struct slb **userslb; \ 67 register_t slbsave[18]; \ 68 uint8_t slbstack[1024]; \ 69 struct pvo_entry *qmap_pvo; \ 70 struct mtx qmap_lock; \ 71 char __pad[1345]; 72 73 #ifdef __powerpc64__ 74 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM64_FIELDS 75 #else 76 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM32_FIELDS 77 #endif 78 79 #define BOOKE_CRITSAVE_LEN (CPUSAVE_LEN + 2) 80 #define BOOKE_TLB_MAXNEST 3 81 #define BOOKE_TLB_SAVELEN 16 82 #define BOOKE_TLBSAVE_LEN (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST) 83 84 #ifdef __powerpc64__ 85 #define BOOKE_PCPU_PAD 901 86 #else 87 #define BOOKE_PCPU_PAD 429 88 #endif 89 #define PCPU_MD_BOOKE_FIELDS \ 90 register_t critsave[BOOKE_CRITSAVE_LEN]; \ 91 register_t mchksave[CPUSAVE_LEN]; \ 92 register_t tlbsave[BOOKE_TLBSAVE_LEN]; \ 93 register_t tlb_level; \ 94 uintptr_t *tlb_lock; \ 95 int tid_next; \ 96 char __pad[BOOKE_PCPU_PAD]; 97 98 /* Definitions for register offsets within the exception tmp save areas */ 99 #define CPUSAVE_R27 0 /* where r27 gets saved */ 100 #define CPUSAVE_R28 1 /* where r28 gets saved */ 101 #define CPUSAVE_R29 2 /* where r29 gets saved */ 102 #define CPUSAVE_R30 3 /* where r30 gets saved */ 103 #define CPUSAVE_R31 4 /* where r31 gets saved */ 104 #define CPUSAVE_AIM_DAR 5 /* where SPR_DAR gets saved */ 105 #define CPUSAVE_AIM_DSISR 6 /* where SPR_DSISR gets saved */ 106 #define CPUSAVE_BOOKE_DEAR 5 /* where SPR_DEAR gets saved */ 107 #define CPUSAVE_BOOKE_ESR 6 /* where SPR_ESR gets saved */ 108 #define CPUSAVE_SRR0 7 /* where SRR0 gets saved */ 109 #define CPUSAVE_SRR1 8 /* where SRR1 gets saved */ 110 #define BOOKE_CRITSAVE_SRR0 9 /* where real SRR0 gets saved (critical) */ 111 #define BOOKE_CRITSAVE_SRR1 10 /* where real SRR0 gets saved (critical) */ 112 113 /* Book-E TLBSAVE is more elaborate */ 114 #define TLBSAVE_BOOKE_LR 0 115 #define TLBSAVE_BOOKE_CR 1 116 #define TLBSAVE_BOOKE_SRR0 2 117 #define TLBSAVE_BOOKE_SRR1 3 118 #define TLBSAVE_BOOKE_R20 4 119 #define TLBSAVE_BOOKE_R21 5 120 #define TLBSAVE_BOOKE_R22 6 121 #define TLBSAVE_BOOKE_R23 7 122 #define TLBSAVE_BOOKE_R24 8 123 #define TLBSAVE_BOOKE_R25 9 124 #define TLBSAVE_BOOKE_R26 10 125 #define TLBSAVE_BOOKE_R27 11 126 #define TLBSAVE_BOOKE_R28 12 127 #define TLBSAVE_BOOKE_R29 13 128 #define TLBSAVE_BOOKE_R30 14 129 #define TLBSAVE_BOOKE_R31 15 130 131 #define PCPU_MD_FIELDS \ 132 PCPU_MD_COMMON_FIELDS \ 133 union { \ 134 struct { \ 135 PCPU_MD_AIM_FIELDS \ 136 } pc_aim; \ 137 struct { \ 138 PCPU_MD_BOOKE_FIELDS \ 139 } pc_booke; \ 140 } 141 142 #ifdef _KERNEL 143 144 #define pcpup (get_pcpu()) 145 146 static __inline __pure2 struct thread * 147 __curthread(void) 148 { 149 struct thread *td; 150 #ifdef __powerpc64__ 151 __asm __volatile("mr %0,13" : "=r"(td)); 152 #else 153 __asm __volatile("mr %0,2" : "=r"(td)); 154 #endif 155 return (td); 156 } 157 #define curthread (__curthread()) 158 159 #define PCPU_GET(member) (pcpup->pc_ ## member) 160 161 /* 162 * XXX The implementation of this operation should be made atomic 163 * with respect to preemption. 164 */ 165 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value)) 166 #define PCPU_INC(member) PCPU_ADD(member, 1) 167 #define PCPU_PTR(member) (&pcpup->pc_ ## member) 168 #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value)) 169 170 #endif /* _KERNEL */ 171 172 #endif /* !_MACHINE_PCPU_H_ */ 173