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/acle-compat.h> 36 #include <machine/cpuconf.h> 37 38 #define ALT_STACK_SIZE 128 39 40 struct vmspace; 41 42 #endif /* _KERNEL */ 43 44 #if __ARM_ARCH >= 6 45 #define PCPU_MD_FIELDS \ 46 unsigned int pc_vfpsid; \ 47 unsigned int pc_vfpmvfr0; \ 48 unsigned int pc_vfpmvfr1; \ 49 struct pmap *pc_curpmap; \ 50 char __pad[141] 51 #else 52 #define PCPU_MD_FIELDS \ 53 char __pad[157] 54 #endif 55 56 #ifdef _KERNEL 57 58 struct pcb; 59 struct pcpu; 60 61 extern struct pcpu *pcpup; 62 63 #if __ARM_ARCH >= 6 64 #define CPU_MASK (0xf) 65 66 #ifndef SMP 67 #define get_pcpu() (pcpup) 68 #else 69 #define get_pcpu() __extension__ ({ \ 70 int id; \ 71 __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \ 72 (pcpup + (id & CPU_MASK)); \ 73 }) 74 #endif 75 76 static inline struct thread * 77 get_curthread(void) 78 { 79 void *ret; 80 81 __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret)); 82 return (ret); 83 } 84 85 static inline void 86 set_curthread(struct thread *td) 87 { 88 89 __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td)); 90 } 91 92 93 static inline void * 94 get_tls(void) 95 { 96 void *tls; 97 98 __asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls)); 99 return (tls); 100 } 101 102 static inline void 103 set_tls(void *tls) 104 { 105 106 __asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls)); 107 } 108 109 #define curthread get_curthread() 110 111 #else 112 #define get_pcpu() pcpup 113 #endif 114 115 #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 116 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 117 #define PCPU_INC(member) PCPU_ADD(member, 1) 118 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 119 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 120 121 void pcpu0_init(void); 122 #endif /* _KERNEL */ 123 124 #endif /* !_MACHINE_PCPU_H_ */ 125