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 vm_offset_t pc_qmap_addr; \ 51 void *pc_qmap_pte; \ 52 char __pad[133] 53 #else 54 #define PCPU_MD_FIELDS \ 55 vm_offset_t qmap_addr; \ 56 void *pc_qmap_pte; \ 57 char __pad[149] 58 #endif 59 60 #ifdef _KERNEL 61 62 struct pcb; 63 struct pcpu; 64 65 extern struct pcpu *pcpup; 66 67 #if __ARM_ARCH >= 6 68 #define CPU_MASK (0xf) 69 70 #ifndef SMP 71 #define get_pcpu() (pcpup) 72 #else 73 #define get_pcpu() __extension__ ({ \ 74 int id; \ 75 __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \ 76 (pcpup + (id & CPU_MASK)); \ 77 }) 78 #endif 79 80 static inline struct thread * 81 get_curthread(void) 82 { 83 void *ret; 84 85 __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret)); 86 return (ret); 87 } 88 89 static inline void 90 set_curthread(struct thread *td) 91 { 92 93 __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td)); 94 } 95 96 97 static inline void * 98 get_tls(void) 99 { 100 void *tls; 101 102 __asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls)); 103 return (tls); 104 } 105 106 static inline void 107 set_tls(void *tls) 108 { 109 110 __asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls)); 111 } 112 113 #define curthread get_curthread() 114 115 #else 116 #define get_pcpu() pcpup 117 #endif 118 119 #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 120 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 121 #define PCPU_INC(member) PCPU_ADD(member, 1) 122 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 123 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 124 125 void pcpu0_init(void); 126 #endif /* _KERNEL */ 127 128 #endif /* !_MACHINE_PCPU_H_ */ 129