cpu.h revision 1.15
1 /* $NetBSD: cpu.h,v 1.15 2019/11/21 19:23:58 ad 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 #ifdef _KERNEL_OPT 38 #include "opt_multiprocessor.h" 39 #endif 40 41 #include <sys/param.h> 42 43 #if defined(_KERNEL) || defined(_KMEMUSER) 44 #include <sys/evcnt.h> 45 46 #include <aarch64/frame.h> 47 #include <aarch64/armreg.h> 48 49 struct clockframe { 50 struct trapframe cf_tf; 51 }; 52 53 /* (spsr & 15) == SPSR_M_EL0T(64bit,0) or USER(32bit,0) */ 54 #define CLKF_USERMODE(cf) ((((cf)->cf_tf.tf_spsr) & 0x0f) == 0) 55 #define CLKF_PC(cf) ((cf)->cf_tf.tf_pc) 56 #define CLKF_INTR(cf) ((void)(cf), curcpu()->ci_intr_depth > 1) 57 58 /* 59 * LWP_PC: Find out the program counter for the given lwp. 60 */ 61 #define LWP_PC(l) ((l)->l_md.md_utf->tf_pc) 62 63 #include <sys/cpu_data.h> 64 #include <sys/device_if.h> 65 #include <sys/intr.h> 66 67 struct aarch64_cpufuncs { 68 void (*cf_set_ttbr0)(uint64_t); 69 }; 70 71 struct cpu_info { 72 struct cpu_data ci_data; 73 device_t ci_dev; 74 cpuid_t ci_cpuid; 75 struct lwp *ci_curlwp; 76 struct lwp *ci_softlwps[SOFTINT_COUNT]; 77 78 uint64_t ci_lastintr; 79 80 int ci_mtx_oldspl; 81 int ci_mtx_count; 82 83 int ci_want_resched; 84 int ci_cpl; 85 volatile u_int ci_softints; 86 volatile u_int ci_astpending; 87 volatile u_int ci_intr_depth; 88 89 /* event counters */ 90 struct evcnt ci_vfp_use; 91 struct evcnt ci_vfp_reuse; 92 struct evcnt ci_vfp_save; 93 struct evcnt ci_vfp_release; 94 95 /* interrupt controller */ 96 u_int ci_gic_redist; /* GICv3 redistributor index */ 97 uint64_t ci_gic_sgir; /* GICv3 SGIR target */ 98 99 /* ACPI */ 100 uint64_t ci_acpiid; /* ACPI Processor Unique ID */ 101 102 struct aarch64_sysctl_cpu_id ci_id; 103 104 struct aarch64_cache_info *ci_cacheinfo; 105 struct aarch64_cpufuncs ci_cpufuncs; 106 107 } __aligned(COHERENCY_UNIT); 108 109 static inline struct cpu_info * 110 curcpu(void) 111 { 112 struct cpu_info *ci; 113 __asm __volatile ("mrs %0, tpidr_el1" : "=r"(ci)); 114 return ci; 115 } 116 #define curlwp (curcpu()->ci_curlwp) 117 118 #define setsoftast(ci) atomic_or_uint(&(ci)->ci_astpending, __BIT(0)) 119 #define cpu_signotify(l) setsoftast((l)->l_cpu) 120 121 void cpu_proc_fork(struct proc *, struct proc *); 122 void cpu_need_proftick(struct lwp *l); 123 void cpu_boot_secondary_processors(void); 124 void cpu_mpstart(void); 125 void cpu_hatch(struct cpu_info *); 126 127 extern struct cpu_info *cpu_info[]; 128 extern uint64_t cpu_mpidr[]; /* MULTIPROCESSOR */ 129 bool cpu_hatched_p(u_int); /* MULTIPROCESSOR */ 130 131 #define CPU_INFO_ITERATOR cpuid_t 132 #ifdef MULTIPROCESSOR 133 #define cpu_number() (curcpu()->ci_index) 134 #define CPU_IS_PRIMARY(ci) ((ci)->ci_index == 0) 135 #define CPU_INFO_FOREACH(cii, ci) \ 136 cii = 0, ci = cpu_info[0]; \ 137 cii < (ncpu ? ncpu : 1) && (ci = cpu_info[cii]) != NULL; \ 138 cii++ 139 #else /* MULTIPROCESSOR */ 140 #define cpu_number() 0 141 #define CPU_IS_PRIMARY(ci) true 142 #define CPU_INFO_FOREACH(cii, ci) \ 143 cii = 0, __USE(cii), ci = curcpu(); ci != NULL; ci = NULL 144 #endif /* MULTIPROCESSOR */ 145 146 147 static inline void 148 cpu_dosoftints(void) 149 { 150 #if defined(__HAVE_FAST_SOFTINTS) && !defined(__HAVE_PIC_FAST_SOFTINTS) 151 void dosoftints(void); 152 struct cpu_info * const ci = curcpu(); 153 154 if (ci->ci_intr_depth == 0 && (ci->ci_softints >> ci->ci_cpl) > 0) 155 dosoftints(); 156 #endif 157 } 158 159 static inline bool 160 cpu_intr_p(void) 161 { 162 #ifdef __HAVE_PIC_FAST_SOFTINTS 163 if (ci->ci_cpl < IPL_VM) 164 return false; 165 #endif 166 return curcpu()->ci_intr_depth > 0; 167 } 168 169 void cpu_attach(device_t, cpuid_t); 170 171 #endif /* _KERNEL || _KMEMUSER */ 172 173 #elif defined(__arm__) 174 175 #include <arm/cpu.h> 176 177 #endif 178 179 #endif /* _AARCH64_CPU_H_ */ 180
Indexes created Sat Oct 25 16:10:12 GMT 2025