135069Speter/*- 2158502Speter * Copyright (c) Peter Wemm 335069Speter * All rights reserved. 435069Speter * 535069Speter * Redistribution and use in source and binary forms, with or without 635069Speter * modification, are permitted provided that the following conditions 735069Speter * are met: 835069Speter * 1. Redistributions of source code must retain the above copyright 935069Speter * notice, this list of conditions and the following disclaimer. 1035069Speter * 2. Redistributions in binary form must reproduce the above copyright 1135069Speter * notice, this list of conditions and the following disclaimer in the 1235069Speter * documentation and/or other materials provided with the distribution. 1335069Speter * 1435069Speter * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1535069Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1635069Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1735069Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1835069Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1935069Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2035069Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2135069Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2235069Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2335069Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2435069Speter * SUCH DAMAGE. 2535069Speter * 2650477Speter * $FreeBSD$ 2735069Speter */ 2835069Speter 2987702Sjhb#ifndef _MACHINE_PCPU_H_ 30166540Sbde#define _MACHINE_PCPU_H_ 3165557Sjasone 32143063Sjoerg#ifndef _SYS_CDEFS_H_ 33166540Sbde#error "sys/cdefs.h is a prerequisite for this file" 34143063Sjoerg#endif 35143063Sjoerg 3665557Sjasone#include <machine/segments.h> 3765557Sjasone#include <machine/tss.h> 3865557Sjasone 3935069Speter/* 4035069Speter * The SMP parts are setup in pmap.c and locore.s for the BSP, and 4135069Speter * mp_machdep.c sets up the data for the AP's to "see" when they awake. 4235069Speter * The reason for doing it via a struct is so that an array of pointers 4335069Speter * to each CPU's data can be set up for things like "check curproc on all 4435069Speter * other processors" 4535069Speter */ 46181775Skmacy 47216956Srwatson#if defined(XEN) 48216956Srwatson 49184198Skmacy/* These are peridically updated in shared_info, and then copied here. */ 50184198Skmacystruct shadow_time_info { 51184198Skmacy uint64_t tsc_timestamp; /* TSC at last update of time vals. */ 52184198Skmacy uint64_t system_timestamp; /* Time, in nanosecs, since boot. */ 53184198Skmacy uint32_t tsc_to_nsec_mul; 54184198Skmacy uint32_t tsc_to_usec_mul; 55184198Skmacy int tsc_shift; 56184198Skmacy uint32_t version; 57184198Skmacy}; 58184198Skmacy 59208742Sjhb#define PCPU_XEN_FIELDS \ 60208742Sjhb ; \ 61208742Sjhb u_int pc_cr3; /* track cr3 for R1/R3*/ \ 62208742Sjhb vm_paddr_t *pc_pdir_shadow; \ 63208742Sjhb uint64_t pc_processed_system_time; \ 64184198Skmacy struct shadow_time_info pc_shadow_time; \ 65256073Sgibbs char __pad[185] 66216956Srwatson 67255040Sgibbs#else /* !XEN */ 68216956Srwatson 69249265Sglebius#define PCPU_XEN_FIELDS \ 70249265Sglebius ; \ 71256073Sgibbs char __pad[233] 72216956Srwatson 73208742Sjhb#endif 74181775Skmacy 75181775Skmacy#define PCPU_MD_FIELDS \ 76181775Skmacy char pc_monitorbuf[128] __aligned(128); /* cache line */ \ 77181775Skmacy struct pcpu *pc_prvspace; /* Self-reference */ \ 78181775Skmacy struct pmap *pc_curpmap; \ 79181775Skmacy struct i386tss pc_common_tss; \ 80181775Skmacy struct segment_descriptor pc_common_tssd; \ 81181775Skmacy struct segment_descriptor *pc_tss_gdt; \ 82181775Skmacy struct segment_descriptor *pc_fsgs_gdt; \ 83181775Skmacy int pc_currentldt; \ 84181775Skmacy u_int pc_acpi_id; /* ACPI CPU id */ \ 85181775Skmacy u_int pc_apic_id; \ 86208507Sjhb int pc_private_tss; /* Flag indicating private tss*/\ 87256073Sgibbs u_int pc_cmci_mask; /* MCx banks for CMCI */ \ 88256073Sgibbs u_int pc_vcpu_id /* Xen vCPU ID */ \ 89208742Sjhb PCPU_XEN_FIELDS 9035069Speter 91181875Sjhb#ifdef _KERNEL 92181875Sjhb 93166540Sbde#ifdef lint 94166540Sbde 95104291Sphkextern struct pcpu *pcpup; 96104291Sphk 97166540Sbde#define PCPU_GET(member) (pcpup->pc_ ## member) 98184198Skmacy#define PCPU_ADD(member, val) (pcpup->pc_ ## member += (val)) 99170291Sattilio#define PCPU_INC(member) PCPU_ADD(member, 1) 100166540Sbde#define PCPU_PTR(member) (&pcpup->pc_ ## member) 101166540Sbde#define PCPU_SET(member, val) (pcpup->pc_ ## member = (val)) 102166540Sbde 103166540Sbde#elif defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) 104166540Sbde 10587702Sjhb/* 10687702Sjhb * Evaluates to the byte offset of the per-cpu variable name. 10787702Sjhb */ 10887702Sjhb#define __pcpu_offset(name) \ 10987702Sjhb __offsetof(struct pcpu, name) 11087702Sjhb 11187702Sjhb/* 11287702Sjhb * Evaluates to the type of the per-cpu variable name. 11387702Sjhb */ 11487702Sjhb#define __pcpu_type(name) \ 11587702Sjhb __typeof(((struct pcpu *)0)->name) 11687702Sjhb 11787702Sjhb/* 11887702Sjhb * Evaluates to the address of the per-cpu variable name. 11987702Sjhb */ 120122833Sbde#define __PCPU_PTR(name) __extension__ ({ \ 12187702Sjhb __pcpu_type(name) *__p; \ 12287702Sjhb \ 12387702Sjhb __asm __volatile("movl %%fs:%1,%0; addl %2,%0" \ 12487702Sjhb : "=r" (__p) \ 12587702Sjhb : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace))), \ 12687702Sjhb "i" (__pcpu_offset(name))); \ 12787702Sjhb \ 12887702Sjhb __p; \ 12987702Sjhb}) 13087702Sjhb 13187702Sjhb/* 13287702Sjhb * Evaluates to the value of the per-cpu variable name. 13387702Sjhb */ 134122833Sbde#define __PCPU_GET(name) __extension__ ({ \ 135166540Sbde __pcpu_type(name) __res; \ 136166540Sbde struct __s { \ 137196816Sjulian u_char __b[MIN(sizeof(__res), 4)]; \ 138166540Sbde } __s; \ 13987702Sjhb \ 140166540Sbde if (sizeof(__res) == 1 || sizeof(__res) == 2 || \ 141166540Sbde sizeof(__res) == 4) { \ 142166536Sbde __asm __volatile("mov %%fs:%1,%0" \ 143166536Sbde : "=r" (__s) \ 144166536Sbde : "m" (*(struct __s *)(__pcpu_offset(name)))); \ 145166540Sbde *(struct __s *)(void *)&__res = __s; \ 14687702Sjhb } else { \ 147166540Sbde __res = *__PCPU_PTR(name); \ 14887702Sjhb } \ 149166540Sbde __res; \ 15087702Sjhb}) 15187702Sjhb 15287702Sjhb/* 153170291Sattilio * Adds a value of the per-cpu counter name. The implementation 154170291Sattilio * must be atomic with respect to interrupts. 155170291Sattilio */ 156170291Sattilio#define __PCPU_ADD(name, val) do { \ 157170291Sattilio __pcpu_type(name) __val; \ 158170291Sattilio struct __s { \ 159196816Sjulian u_char __b[MIN(sizeof(__val), 4)]; \ 160170291Sattilio } __s; \ 161170291Sattilio \ 162170291Sattilio __val = (val); \ 163170291Sattilio if (sizeof(__val) == 1 || sizeof(__val) == 2 || \ 164170291Sattilio sizeof(__val) == 4) { \ 165170291Sattilio __s = *(struct __s *)(void *)&__val; \ 166170291Sattilio __asm __volatile("add %1,%%fs:%0" \ 167170291Sattilio : "=m" (*(struct __s *)(__pcpu_offset(name))) \ 168170291Sattilio : "r" (__s)); \ 169170291Sattilio } else \ 170170291Sattilio *__PCPU_PTR(name) += __val; \ 171170291Sattilio} while (0) 172170291Sattilio 173170291Sattilio/* 174167429Salc * Increments the value of the per-cpu counter name. The implementation 175167429Salc * must be atomic with respect to interrupts. 176167429Salc */ 177170291Sattilio#define __PCPU_INC(name) do { \ 178167429Salc CTASSERT(sizeof(__pcpu_type(name)) == 1 || \ 179167429Salc sizeof(__pcpu_type(name)) == 2 || \ 180167429Salc sizeof(__pcpu_type(name)) == 4); \ 181167429Salc if (sizeof(__pcpu_type(name)) == 1) { \ 182167429Salc __asm __volatile("incb %%fs:%0" \ 183167429Salc : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\ 184167429Salc : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\ 185167429Salc } else if (sizeof(__pcpu_type(name)) == 2) { \ 186167429Salc __asm __volatile("incw %%fs:%0" \ 187167429Salc : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\ 188167429Salc : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\ 189167429Salc } else if (sizeof(__pcpu_type(name)) == 4) { \ 190167429Salc __asm __volatile("incl %%fs:%0" \ 191167429Salc : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\ 192167429Salc : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\ 193167429Salc } \ 194167429Salc} while (0) 195167429Salc 196167429Salc/* 19787702Sjhb * Sets the value of the per-cpu variable name to value val. 19887702Sjhb */ 199196811Sjulian#define __PCPU_SET(name, val) do { \ 200166540Sbde __pcpu_type(name) __val; \ 201166540Sbde struct __s { \ 202196811Sjulian u_char __b[MIN(sizeof(__val), 4)]; \ 203166540Sbde } __s; \ 20487702Sjhb \ 205166540Sbde __val = (val); \ 206166536Sbde if (sizeof(__val) == 1 || sizeof(__val) == 2 || \ 207166536Sbde sizeof(__val) == 4) { \ 208166536Sbde __s = *(struct __s *)(void *)&__val; \ 209166536Sbde __asm __volatile("mov %1,%%fs:%0" \ 210166536Sbde : "=m" (*(struct __s *)(__pcpu_offset(name))) \ 211166536Sbde : "r" (__s)); \ 21287702Sjhb } else { \ 21387702Sjhb *__PCPU_PTR(name) = __val; \ 21487702Sjhb } \ 215196811Sjulian} while (0) 21687702Sjhb 21787702Sjhb#define PCPU_GET(member) __PCPU_GET(pc_ ## member) 218170291Sattilio#define PCPU_ADD(member, val) __PCPU_ADD(pc_ ## member, val) 219170291Sattilio#define PCPU_INC(member) __PCPU_INC(pc_ ## member) 22087702Sjhb#define PCPU_PTR(member) __PCPU_PTR(pc_ ## member) 22187702Sjhb#define PCPU_SET(member, val) __PCPU_SET(pc_ ## member, val) 22287702Sjhb 223238792Skib#define OFFSETOF_CURTHREAD 0 224238792Skib#ifdef __clang__ 225238792Skib#pragma clang diagnostic push 226238792Skib#pragma clang diagnostic ignored "-Wnull-dereference" 227238792Skib#endif 228210623Sjhbstatic __inline __pure2 struct thread * 229122931Speter__curthread(void) 230122931Speter{ 231122931Speter struct thread *td; 232122931Speter 233238792Skib __asm("movl %%fs:%1,%0" : "=r" (td) 234238792Skib : "m" (*(char *)OFFSETOF_CURTHREAD)); 235122931Speter return (td); 236122931Speter} 237238792Skib#ifdef __clang__ 238238792Skib#pragma clang diagnostic pop 239238792Skib#endif 240166540Sbde#define curthread (__curthread()) 241122931Speter 242238792Skib#define OFFSETOF_CURPCB 16 243238792Skibstatic __inline __pure2 struct pcb * 244238792Skib__curpcb(void) 245238792Skib{ 246238792Skib struct pcb *pcb; 247238792Skib 248238792Skib __asm("movl %%fs:%1,%0" : "=r" (pcb) : "m" (*(char *)OFFSETOF_CURPCB)); 249238792Skib return (pcb); 250238792Skib} 251238792Skib#define curpcb (__curpcb()) 252238792Skib 253166540Sbde#else /* !lint || defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) */ 254100079Smarkm 255166540Sbde#error "this file needs to be ported to your compiler" 25681763Sobrien 257166540Sbde#endif /* lint, etc. */ 258166540Sbde 259166540Sbde#endif /* _KERNEL */ 260166540Sbde 261166540Sbde#endif /* !_MACHINE_PCPU_H_ */ 262