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 pmap *pc_curpmap; \ 50 char __pad[137] 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 #if ARM_ARCH_6 || ARM_ARCH_7A 63 /* or ARM_TP_ADDRESS mark REMOVE ME NOTE */ 64 65 #define CPU_MASK (0xf) 66 67 #ifndef SMP 68 #define get_pcpu() (pcpup) 69 #else 70 #define get_pcpu() __extension__ ({ \ 71 int id; \ 72 __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \ 73 (pcpup + (id & CPU_MASK)); \ 74 }) 75 #endif 76 77 static inline struct thread * 78 get_curthread(void) 79 { 80 void *ret; 81 82 __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret)); 83 return (ret); 84 } 85 86 static inline void 87 set_curthread(struct thread *td) 88 { 89 90 __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td)); 91 } 92 93 94 static inline void * 95 get_tls(void) 96 { 97 void *tls; 98 99 __asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls)); 100 return (tls); 101 } 102 103 static inline void 104 set_tls(void *tls) 105 { 106 107 __asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls)); 108 } 109 110 #define curthread get_curthread() 111 112 #else 113 #define get_pcpu() pcpup 114 #endif 115 116 #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 117 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 118 #define PCPU_INC(member) PCPU_ADD(member, 1) 119 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 120 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 121 122 void pcpu0_init(void); 123 #endif /* _KERNEL */ 124 125 #endif /* !_MACHINE_PCPU_H_ */ 126