1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * Copyright (c) 2014 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * 9 * Portions of this software were developed by Andrew Turner 10 * under sponsorship from the FreeBSD Foundation 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 37 * from: FreeBSD: src/sys/i386/include/cpu.h,v 1.62 2001/06/29 38 * $FreeBSD$ 39 */ 40 41 #ifndef _MACHINE_CPU_H_ 42 #define _MACHINE_CPU_H_ 43 44 #include <machine/atomic.h> 45 #include <machine/frame.h> 46 47 #define TRAPF_PC(tfp) ((tfp)->tf_lr) 48 #define TRAPF_USERMODE(tfp) (((tfp)->tf_elr & (1ul << 63)) == 0) 49 50 #define cpu_getstack(td) ((td)->td_frame->tf_sp) 51 #define cpu_setstack(td, sp) ((td)->td_frame->tf_sp = (sp)) 52 #define cpu_spinwait() /* nothing */ 53 54 /* Extract CPU affinity levels 0-3 */ 55 #define CPU_AFF0(mpidr) (u_int)(((mpidr) >> 0) & 0xff) 56 #define CPU_AFF1(mpidr) (u_int)(((mpidr) >> 8) & 0xff) 57 #define CPU_AFF2(mpidr) (u_int)(((mpidr) >> 16) & 0xff) 58 #define CPU_AFF3(mpidr) (u_int)(((mpidr) >> 32) & 0xff) 59 #define CPU_AFF_MASK 0xff00ffffffUL /* Mask affinity fields in MPIDR_EL1 */ 60 61 #ifdef _KERNEL 62 63 extern char btext[]; 64 extern char etext[]; 65 66 extern uint64_t __cpu_affinity[]; 67 68 void cpu_halt(void) __dead2; 69 void cpu_reset(void) __dead2; 70 void fork_trampoline(void); 71 void identify_cpu(void); 72 void swi_vm(void *v); 73 74 #define CPU_AFFINITY(cpu) __cpu_affinity[(cpu)] 75 76 static __inline uint64_t 77 get_cyclecount(void) 78 { 79 80 /* TODO: This is bogus */ 81 return (1); 82 } 83 84 #define ADDRESS_TRANSLATE_FUNC(stage) \ 85 static inline uint64_t \ 86 arm64_address_translate_ ##stage (uint64_t addr) \ 87 { \ 88 uint64_t ret; \ 89 \ 90 __asm __volatile( \ 91 "at " __STRING(stage) ", %1 \n" \ 92 "mrs %0, par_el1" : "=r"(ret) : "r"(addr)); \ 93 \ 94 return (ret); \ 95 } 96 97 ADDRESS_TRANSLATE_FUNC(s1e0r) 98 ADDRESS_TRANSLATE_FUNC(s1e0w) 99 ADDRESS_TRANSLATE_FUNC(s1e1r) 100 ADDRESS_TRANSLATE_FUNC(s1e1w) 101 102 #endif 103 104 #endif /* !_MACHINE_CPU_H_ */ 105