pcpu.h revision 284265
1129198Scognet/*- 2129198Scognet * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 3129198Scognet * All rights reserved. 4129198Scognet * 5129198Scognet * Redistribution and use in source and binary forms, with or without 6129198Scognet * modification, are permitted provided that the following conditions 7129198Scognet * are met: 8129198Scognet * 1. Redistributions of source code must retain the above copyright 9129198Scognet * notice, this list of conditions and the following disclaimer. 10129198Scognet * 2. Redistributions in binary form must reproduce the above copyright 11129198Scognet * notice, this list of conditions and the following disclaimer in the 12129198Scognet * documentation and/or other materials provided with the distribution. 13129198Scognet * 14129198Scognet * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15129198Scognet * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16129198Scognet * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17129198Scognet * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18129198Scognet * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19129198Scognet * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20129198Scognet * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21129198Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22129198Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23129198Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24129198Scognet * SUCH DAMAGE. 25129198Scognet * 26129198Scognet * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27 27129198Scognet * $FreeBSD: head/sys/arm/include/pcpu.h 284265 2015-06-11 13:58:40Z andrew $ 28129198Scognet */ 29129198Scognet 30129198Scognet#ifndef _MACHINE_PCPU_H_ 31129198Scognet#define _MACHINE_PCPU_H_ 32129198Scognet 33129198Scognet#ifdef _KERNEL 34129198Scognet 35284265Sandrew#include <machine/acle-compat.h> 36239268Sgonzo#include <machine/cpuconf.h> 37129198Scognet 38129198Scognet#define ALT_STACK_SIZE 128 39129198Scognet 40129198Scognetstruct vmspace; 41129198Scognet 42181875Sjhb#endif /* _KERNEL */ 43181875Sjhb 44284265Sandrew#if __ARM_ARCH >= 6 45239268Sgonzo#define PCPU_MD_FIELDS \ 46239268Sgonzo unsigned int pc_vfpsid; \ 47239268Sgonzo unsigned int pc_vfpmvfr0; \ 48239268Sgonzo unsigned int pc_vfpmvfr1; \ 49249265Sglebius struct pmap *pc_curpmap; \ 50284109Sandrew char __pad[141] 51239268Sgonzo#else 52249265Sglebius#define PCPU_MD_FIELDS \ 53249265Sglebius char __pad[157] 54239268Sgonzo#endif 55129198Scognet 56181875Sjhb#ifdef _KERNEL 57181875Sjhb 58129198Scognetstruct pcb; 59129198Scognetstruct pcpu; 60129198Scognet 61129198Scognetextern struct pcpu *pcpup; 62261415Scognet 63284265Sandrew#if __ARM_ARCH >= 6 64261415Scognet#define CPU_MASK (0xf) 65261415Scognet 66261419Scognet#ifndef SMP 67261419Scognet#define get_pcpu() (pcpup) 68261419Scognet#else 69261415Scognet#define get_pcpu() __extension__ ({ \ 70261415Scognet int id; \ 71261415Scognet __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \ 72261415Scognet (pcpup + (id & CPU_MASK)); \ 73261415Scognet }) 74261419Scognet#endif 75261415Scognet 76261415Scognetstatic inline struct thread * 77261415Scognetget_curthread(void) 78239268Sgonzo{ 79261415Scognet void *ret; 80129198Scognet 81261415Scognet __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret)); 82261415Scognet return (ret); 83239268Sgonzo} 84167429Salc 85239268Sgonzostatic inline void 86261415Scognetset_curthread(struct thread *td) 87239268Sgonzo{ 88239268Sgonzo 89261415Scognet __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td)); 90239268Sgonzo} 91239268Sgonzo 92261415Scognet 93239268Sgonzostatic inline void * 94239268Sgonzoget_tls(void) 95239268Sgonzo{ 96239268Sgonzo void *tls; 97239268Sgonzo 98239268Sgonzo __asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls)); 99239268Sgonzo return (tls); 100239268Sgonzo} 101239268Sgonzo 102239268Sgonzostatic inline void 103239268Sgonzoset_tls(void *tls) 104239268Sgonzo{ 105239268Sgonzo 106239268Sgonzo __asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls)); 107239268Sgonzo} 108261415Scognet 109261415Scognet#define curthread get_curthread() 110261415Scognet 111239268Sgonzo#else 112239268Sgonzo#define get_pcpu() pcpup 113239268Sgonzo#endif 114239268Sgonzo 115239268Sgonzo#define PCPU_GET(member) (get_pcpu()->pc_ ## member) 116239268Sgonzo#define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 117170388Sjeff#define PCPU_INC(member) PCPU_ADD(member, 1) 118245202Scognet#define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 119245202Scognet#define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 120129198Scognet 121239268Sgonzovoid pcpu0_init(void); 122129198Scognet#endif /* _KERNEL */ 123129198Scognet 124129198Scognet#endif /* !_MACHINE_PCPU_H_ */ 125