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 #include <machine/cpu.h> 34 #include <machine/cpufunc.h> 35 36 #define ALT_STACK_SIZE 128 37 38 typedef int (*pcpu_bp_harden)(void); 39 typedef int (*pcpu_ssbd)(int); 40 struct debug_monitor_state; 41 42 #define PCPU_MD_FIELDS \ 43 u_int pc_acpi_id; /* ACPI CPU id */ \ 44 u_int pc_midr; /* stored MIDR value */ \ 45 uint64_t pc_clock; \ 46 pcpu_bp_harden pc_bp_harden; \ 47 pcpu_ssbd pc_ssbd; \ 48 struct pmap *pc_curpmap; \ 49 struct pmap *pc_curvmpmap; \ 50 /* Store as two u_int values to preserve KBI */ \ 51 uint64_t pc_mpidr; \ 52 u_int pc_bcast_tlbi_workaround; \ 53 char __pad[197] 54 55 #ifdef _KERNEL 56 57 struct pcb; 58 struct pcpu; 59 60 register struct pcpu *pcpup __asm ("x18"); 61 62 static inline struct pcpu * 63 get_pcpu(void) 64 { 65 struct pcpu *pcpu; 66 67 __asm __volatile("mov %0, x18" : "=&r"(pcpu)); 68 return (pcpu); 69 } 70 71 static inline struct thread * 72 get_curthread(void) 73 { 74 struct thread *td; 75 76 __asm __volatile("ldr %0, [x18]" : "=&r"(td)); 77 return (td); 78 } 79 80 #define curthread get_curthread() 81 82 #define PCPU_GET(member) (pcpup->pc_ ## member) 83 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value)) 84 #define PCPU_PTR(member) (&pcpup->pc_ ## member) 85 #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value)) 86 87 #define PCPU_GET_MPIDR(pc) ((pc)->pc_mpidr) 88 89 #endif /* _KERNEL */ 90 91 #endif /* !_MACHINE_PCPU_H_ */ 92