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 #include <machine/frame.h> 37 38 #define ALT_STACK_SIZE 128 39 40 struct vmspace; 41 42 #endif /* _KERNEL */ 43 44 #ifdef VFP 45 #define PCPU_MD_FIELDS \ 46 unsigned int pc_cpu; \ 47 unsigned int pc_vfpsid; \ 48 unsigned int pc_vfpmvfr0; \ 49 unsigned int pc_vfpmvfr1; \ 50 struct thread *pc_vfpcthread; \ 51 struct pmap *pc_curpmap; \ 52 char __pad[133] 53 #else 54 #define PCPU_MD_FIELDS \ 55 char __pad[157] 56 #endif 57 58 #ifdef _KERNEL 59 60 struct pcb; 61 struct pcpu; 62 63 extern struct pcpu *pcpup; 64 #if ARM_ARCH_6 || ARM_ARCH_7A 65 /* or ARM_TP_ADDRESS mark REMOVE ME NOTE */ 66 static inline struct pcpu * 67 get_pcpu(void) 68 { 69 void *pcpu; 70 71 __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (pcpu)); 72 return (pcpu); 73 } 74 75 static inline void 76 set_pcpu(void *pcpu) 77 { 78 79 __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (pcpu)); 80 } 81 82 static inline void * 83 get_tls(void) 84 { 85 void *tls; 86 87 __asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls)); 88 return (tls); 89 } 90 91 static inline void 92 set_tls(void *tls) 93 { 94 95 __asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls)); 96 } 97 #else 98 #define get_pcpu() pcpup 99 #endif 100 101 #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 102 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 103 #define PCPU_INC(member) PCPU_ADD(member, 1) 104 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 105 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 106 107 void pcpu0_init(void); 108 #endif /* _KERNEL */ 109 110 #endif /* !_MACHINE_PCPU_H_ */ 111