cpu.h revision 1.1.28.6
1 /* $NetBSD: cpu.h,v 1.1.28.6 2018/11/26 01:52:16 pgoyette 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 cpu_info { 68 struct cpu_data ci_data; 69 device_t ci_dev; 70 cpuid_t ci_cpuid; 71 struct lwp *ci_curlwp; 72 struct lwp *ci_softlwps[SOFTINT_COUNT]; 73 74 uint64_t ci_lastintr; 75 76 int ci_mtx_oldspl; 77 int ci_mtx_count; 78 79 int ci_want_resched; 80 int ci_cpl; 81 volatile u_int ci_softints; 82 volatile u_int ci_astpending; 83 volatile u_int ci_intr_depth; 84 85 /* event counters */ 86 struct evcnt ci_vfp_use; 87 struct evcnt ci_vfp_reuse; 88 struct evcnt ci_vfp_save; 89 struct evcnt ci_vfp_release; 90 91 /* interrupt controller */ 92 u_int ci_gic_redist; /* GICv3 redistributor index */ 93 uint64_t ci_gic_sgir; /* GICv3 SGIR target */ 94 95 /* ACPI */ 96 uint64_t ci_acpiid; /* ACPI Processor Unique ID */ 97 98 struct aarch64_sysctl_cpu_id ci_id; 99 100 struct aarch64_cache_info *ci_cacheinfo; 101 102 } __aligned(COHERENCY_UNIT); 103 104 static inline struct cpu_info * 105 curcpu(void) 106 { 107 struct cpu_info *ci; 108 __asm __volatile ("mrs %0, tpidr_el1" : "=r"(ci)); 109 return ci; 110 } 111 #define curlwp (curcpu()->ci_curlwp) 112 113 #define setsoftast(ci) atomic_or_uint(&(ci)->ci_astpending, __BIT(0)) 114 #define cpu_signotify(l) setsoftast((l)->l_cpu) 115 116 void cpu_set_curpri(int); 117 void cpu_proc_fork(struct proc *, struct proc *); 118 void cpu_need_proftick(struct lwp *l); 119 void cpu_boot_secondary_processors(void); 120 void cpu_mpstart(void); 121 void cpu_hatch(struct cpu_info *); 122 123 extern struct cpu_info *cpu_info[]; 124 extern volatile u_int arm_cpu_hatched; /* MULTIPROCESSOR */ 125 extern uint64_t cpu_mpidr[]; /* MULTIPROCESSOR */ 126 127 #define CPU_INFO_ITERATOR cpuid_t 128 #ifdef MULTIPROCESSOR 129 #define cpu_number() (curcpu()->ci_index) 130 #define CPU_IS_PRIMARY(ci) ((ci)->ci_index == 0) 131 #define CPU_INFO_FOREACH(cii, ci) \ 132 cii = 0, ci = cpu_info[0]; \ 133 cii < (ncpu ? ncpu : 1) && (ci = cpu_info[cii]) != NULL; \ 134 cii++ 135 #else /* MULTIPROCESSOR */ 136 #define cpu_number() 0 137 #define CPU_IS_PRIMARY(ci) true 138 #define CPU_INFO_FOREACH(cii, ci) \ 139 cii = 0, __USE(cii), ci = curcpu(); ci != NULL; ci = NULL 140 #endif /* MULTIPROCESSOR */ 141 142 143 static inline void 144 cpu_dosoftints(void) 145 { 146 #if defined(__HAVE_FAST_SOFTINTS) && !defined(__HAVE_PIC_FAST_SOFTINTS) 147 void dosoftints(void); 148 struct cpu_info * const ci = curcpu(); 149 150 if (ci->ci_intr_depth == 0 && (ci->ci_softints >> ci->ci_cpl) > 0) 151 dosoftints(); 152 #endif 153 } 154 155 static inline bool 156 cpu_intr_p(void) 157 { 158 #ifdef __HAVE_PIC_FAST_SOFTINTS 159 if (ci->ci_cpl < IPL_VM) 160 return false; 161 #endif 162 return curcpu()->ci_intr_depth > 0; 163 } 164 165 void cpu_attach(device_t, cpuid_t); 166 167 #endif /* _KERNEL || _KMEMUSER */ 168 169 #elif defined(__arm__) 170 171 #include <arm/cpu.h> 172 173 #endif 174 175 #endif /* _AARCH64_CPU_H_ */ 176
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