Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/i386/include/pcpu.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) Peter Wemm 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _MACHINE_PCPU_H_ 32 #define _MACHINE_PCPU_H_ 33 34 #ifndef _SYS_CDEFS_H_ 35 #error "sys/cdefs.h is a prerequisite for this file" 36 #endif 37 38 #include <machine/segments.h> 39 #include <machine/tss.h> 40 41 #include <sys/_lock.h> 42 #include <sys/_mutex.h> 43 44 /* 45 * The SMP parts are setup in pmap.c and machdep.c for the BSP, and 46 * pmap.c and mp_machdep.c sets up the data for the AP's to "see" when 47 * they awake. The reason for doing it via a struct is so that an 48 * array of pointers to each CPU's data can be set up for things like 49 * "check curproc on all other processors" 50 */ 51 52 #define PCPU_MD_FIELDS \ 53 char pc_monitorbuf[128] __aligned(128); /* cache line */ \ 54 struct pcpu *pc_prvspace; /* Self-reference */ \ 55 struct pmap *pc_curpmap; \ 56 struct segment_descriptor pc_common_tssd; \ 57 struct segment_descriptor *pc_tss_gdt; \ 58 struct segment_descriptor *pc_fsgs_gdt; \ 59 struct i386tss *pc_common_tssp; \ 60 u_int pc_kesp0; \ 61 u_int pc_trampstk; \ 62 int pc_currentldt; \ 63 u_int pc_acpi_id; /* ACPI CPU id */ \ 64 u_int pc_apic_id; \ 65 int pc_private_tss; /* Flag indicating private tss*/\ 66 u_int pc_cmci_mask; /* MCx banks for CMCI */ \ 67 u_int pc_vcpu_id; /* Xen vCPU ID */ \ 68 struct mtx pc_cmap_lock; \ 69 void *pc_cmap_pte1; \ 70 void *pc_cmap_pte2; \ 71 caddr_t pc_cmap_addr1; \ 72 caddr_t pc_cmap_addr2; \ 73 vm_offset_t pc_qmap_addr; /* KVA for temporary mappings */\ 74 vm_offset_t pc_copyout_maddr; \ 75 vm_offset_t pc_copyout_saddr; \ 76 struct mtx pc_copyout_mlock; \ 77 struct sx pc_copyout_slock; \ 78 char *pc_copyout_buf; \ 79 vm_offset_t pc_pmap_eh_va; \ 80 caddr_t pc_pmap_eh_ptep; \ 81 uint32_t pc_smp_tlb_done; /* TLB op acknowledgement */ \ 82 uint32_t pc_ibpb_set; \ 83 void *pc_mds_buf; \ 84 void *pc_mds_buf64; \ 85 uint32_t pc_pad[4]; \ 86 uint8_t pc_mds_tmp[64]; \ 87 char __pad[3522] 88 89 #ifdef _KERNEL 90 91 #if defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) 92 93 /* 94 * Evaluates to the byte offset of the per-cpu variable name. 95 */ 96 #define __pcpu_offset(name) \ 97 __offsetof(struct pcpu, name) 98 99 /* 100 * Evaluates to the type of the per-cpu variable name. 101 */ 102 #define __pcpu_type(name) \ 103 __typeof(((struct pcpu *)0)->name) 104 105 /* 106 * Evaluates to the address of the per-cpu variable name. 107 */ 108 #define __PCPU_PTR(name) __extension__ ({ \ 109 __pcpu_type(name) *__p; \ 110 \ 111 __asm __volatile("movl %%fs:%1,%0; addl %2,%0" \ 112 : "=r" (__p) \ 113 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace))), \ 114 "i" (__pcpu_offset(name))); \ 115 \ 116 __p; \ 117 }) 118 119 /* 120 * Evaluates to the value of the per-cpu variable name. 121 */ 122 #define __PCPU_GET(name) __extension__ ({ \ 123 __pcpu_type(name) __res; \ 124 struct __s { \ 125 u_char __b[MIN(sizeof(__res), 4)]; \ 126 } __s; \ 127 \ 128 if (sizeof(__res) == 1 || sizeof(__res) == 2 || \ 129 sizeof(__res) == 4) { \ 130 __asm __volatile("mov %%fs:%1,%0" \ 131 : "=r" (__s) \ 132 : "m" (*(struct __s *)(__pcpu_offset(name)))); \ 133 *(struct __s *)(void *)&__res = __s; \ 134 } else { \ 135 __res = *__PCPU_PTR(name); \ 136 } \ 137 __res; \ 138 }) 139 140 /* 141 * Adds a value of the per-cpu counter name. The implementation 142 * must be atomic with respect to interrupts. 143 */ 144 #define __PCPU_ADD(name, val) do { \ 145 __pcpu_type(name) __val; \ 146 struct __s { \ 147 u_char __b[MIN(sizeof(__val), 4)]; \ 148 } __s; \ 149 \ 150 __val = (val); \ 151 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \ 152 sizeof(__val) == 4) { \ 153 __s = *(struct __s *)(void *)&__val; \ 154 __asm __volatile("add %1,%%fs:%0" \ 155 : "=m" (*(struct __s *)(__pcpu_offset(name))) \ 156 : "r" (__s)); \ 157 } else \ 158 *__PCPU_PTR(name) += __val; \ 159 } while (0) 160 161 /* 162 * Increments the value of the per-cpu counter name. The implementation 163 * must be atomic with respect to interrupts. 164 */ 165 #define __PCPU_INC(name) do { \ 166 CTASSERT(sizeof(__pcpu_type(name)) == 1 || \ 167 sizeof(__pcpu_type(name)) == 2 || \ 168 sizeof(__pcpu_type(name)) == 4); \ 169 if (sizeof(__pcpu_type(name)) == 1) { \ 170 __asm __volatile("incb %%fs:%0" \ 171 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\ 172 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\ 173 } else if (sizeof(__pcpu_type(name)) == 2) { \ 174 __asm __volatile("incw %%fs:%0" \ 175 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\ 176 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\ 177 } else if (sizeof(__pcpu_type(name)) == 4) { \ 178 __asm __volatile("incl %%fs:%0" \ 179 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\ 180 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\ 181 } \ 182 } while (0) 183 184 /* 185 * Sets the value of the per-cpu variable name to value val. 186 */ 187 #define __PCPU_SET(name, val) do { \ 188 __pcpu_type(name) __val; \ 189 struct __s { \ 190 u_char __b[MIN(sizeof(__val), 4)]; \ 191 } __s; \ 192 \ 193 __val = (val); \ 194 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \ 195 sizeof(__val) == 4) { \ 196 __s = *(struct __s *)(void *)&__val; \ 197 __asm __volatile("mov %1,%%fs:%0" \ 198 : "=m" (*(struct __s *)(__pcpu_offset(name))) \ 199 : "r" (__s)); \ 200 } else { \ 201 *__PCPU_PTR(name) = __val; \ 202 } \ 203 } while (0) 204 205 #define get_pcpu() __extension__ ({ \ 206 struct pcpu *__pc; \ 207 \ 208 __asm __volatile("movl %%fs:%1,%0" \ 209 : "=r" (__pc) \ 210 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace)))); \ 211 __pc; \ 212 }) 213 214 #define PCPU_GET(member) __PCPU_GET(pc_ ## member) 215 #define PCPU_ADD(member, val) __PCPU_ADD(pc_ ## member, val) 216 #define PCPU_INC(member) __PCPU_INC(pc_ ## member) 217 #define PCPU_PTR(member) __PCPU_PTR(pc_ ## member) 218 #define PCPU_SET(member, val) __PCPU_SET(pc_ ## member, val) 219 220 #define IS_BSP() (PCPU_GET(cpuid) == 0) 221 222 #else /* defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) */ 223 224 #error "this file needs to be ported to your compiler" 225 226 #endif /* __GNUCLIKE_ASM etc. */ 227 228 #endif /* _KERNEL */ 229 230 #endif /* !_MACHINE_PCPU_H_ */
Cache object: 030c32c9c9bf99a1b4eda8b0d8f2955e
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]