1 /* $NetBSD: cpu.h,v 1.1 2014/08/10 05:47:38 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _AARCH64_CPU_H_ 33 #define _AARCH64_CPU_H_ 34 35 #ifdef __aarch64__ 36 37 #if defined(_KERNEL) || defined(_KMEMUSER) 38 struct clockframe { 39 uintptr_t cf_pc; 40 uint32_t cf_psr; 41 int cf_intr_depth; 42 }; 43 44 #define CLKF_USERMODE(cf) (((cf)->cf_psr & 0x0f) == 0) 45 #define CLKF_PC(cf) ((cf)->cf_pc) 46 #define CLKF_INTR(cf) ((cf)->cf_intr_depth > 0) 47 48 #include <sys/cpu_data.h> 49 #include <sys/device_if.h> 50 #include <sys/intr.h> 51 52 struct cpu_info { 53 struct cpu_data ci_data; 54 device_t ci_dev; 55 cpuid_t ci_cpuid; 56 cpuid_t ci_gicid; // used for IPIs 57 struct lwp *ci_curlwp; 58 struct lwp *ci_softlwps[SOFTINT_COUNT]; 59 60 uint64_t ci_lastintr; 61 62 int ci_mtx_oldspl; 63 int ci_mtx_count; 64 65 int ci_want_resched; 66 int ci_cpl; 67 u_int ci_softints; 68 volatile u_int ci_astpending; 69 volatile u_int ci_intr_depth; 70 }; 71 72 static inline struct cpu_info * 73 curcpu(void) 74 { 75 struct cpu_info *ci; 76 __asm __volatile("mrs %0, tpidr_el1" : "=r"(ci)); 77 return ci; 78 } 79 80 #define curlwp (curcpu()->ci_curlwp) 81 82 static inline cpuid_t 83 cpu_number(void) 84 { 85 return curcpu()->ci_gicid; 86 } 87 88 void cpu_set_curpri(int); 89 void cpu_proc_fork(struct proc *, struct proc *); 90 void cpu_signotify(struct lwp *); 91 void cpu_need_proftick(struct lwp *l); 92 void cpu_boot_secondary_processors(void); 93 94 #define CPU_INFO_ITERATOR cpuid_t 95 #define CPU_INFO_FOREACH(cii, ci) \ 96 (cii) = 0; ((ci) = cpu_infos[cii]) != NULL; (cii)++ 97 98 static inline void 99 cpu_dosoftints(void) 100 { 101 extern void dosoftints(void); 102 struct cpu_info * const ci = curcpu(); 103 if (ci->ci_intr_depth == 0 104 && (ci->ci_data.cpu_softints >> ci->ci_cpl) > 0) 105 dosoftints(); 106 } 107 108 static inline bool 109 cpu_intr_p(void) 110 { 111 return curcpu()->ci_intr_depth > 0; 112 } 113 114 #endif /* _KERNEL || _KMEMUSER */ 115 116 #elif defined(__arm__) 117 118 #include <arm/cpu.h> 119 120 #endif 121 122 #endif /* _AARCH64_CPU_H_ */ 123