1 /*- 2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27 27 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_PCPU_H_ 31 #define _MACHINE_PCPU_H_ 32 33 #ifdef _KERNEL 34 35 #include <machine/cpuconf.h> 36 37 #define ALT_STACK_SIZE 128 38 39 struct vmspace; 40 41 #endif /* _KERNEL */ 42 43 #ifdef VFP 44 #define PCPU_MD_FIELDS \ 45 unsigned int pc_cpu; \ 46 unsigned int pc_vfpsid; \ 47 unsigned int pc_vfpmvfr0; \ 48 unsigned int pc_vfpmvfr1; \ 49 struct thread *pc_vfpcthread; \ 50 struct pmap *pc_curpmap; \ 51 char __pad[133] 52 #else 53 #define PCPU_MD_FIELDS \ 54 char __pad[157] 55 #endif 56 57 #ifdef _KERNEL 58 59 struct pcb; 60 struct pcpu; 61 62 extern struct pcpu *pcpup; 63 #if ARM_ARCH_6 || ARM_ARCH_7A 64 /* or ARM_TP_ADDRESS mark REMOVE ME NOTE */ 65 static inline struct pcpu * 66 get_pcpu(void) 67 { 68 void *pcpu; 69 70 __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (pcpu)); 71 return (pcpu); 72 } 73 74 static inline void 75 set_pcpu(void *pcpu) 76 { 77 78 __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (pcpu)); 79 } 80 81 static inline void * 82 get_tls(void) 83 { 84 void *tls; 85 86 __asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls)); 87 return (tls); 88 } 89 90 static inline void 91 set_tls(void *tls) 92 { 93 94 __asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls)); 95 } 96 #else 97 #define get_pcpu() pcpup 98 #endif 99 100 #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 101 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 102 #define PCPU_INC(member) PCPU_ADD(member, 1) 103 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 104 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 105 106 void pcpu0_init(void); 107 #endif /* _KERNEL */ 108 109 #endif /* !_MACHINE_PCPU_H_ */ 110