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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 | /* * Copyright (c) 2000-2019 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * Mach Operating System * Copyright (c) 1991,1990 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* */ #ifdef KERNEL_PRIVATE #ifndef _I386_MP_H_ #define _I386_MP_H_ //#define MP_DEBUG 1 #include <i386/apic.h> #include <i386/mp_events.h> #include <machine/limits.h> #define MAX_CPUS 64 /* 8 * sizeof(cpumask_t) */ #ifndef ASSEMBLER #include <stdint.h> #include <sys/cdefs.h> #include <mach/boolean.h> #include <mach/kern_return.h> #include <mach/i386/thread_status.h> #include <mach/vm_types.h> #include <kern/simple_lock.h> #include <kern/assert.h> #ifdef XNU_KERNEL_PRIVATE #include <vm/vm_kern_xnu.h> #endif __BEGIN_DECLS extern kern_return_t intel_startCPU(int slot_num); extern kern_return_t intel_startCPU_fast(int slot_num); extern void i386_init_slave(void) __dead2; extern void i386_init_slave_fast(void) __dead2; extern void smp_init(void); extern void cpu_interrupt(int cpu); __END_DECLS extern unsigned int real_ncpus; /* real number of cpus */ extern unsigned int max_ncpus; /* max number of cpus */ extern unsigned int max_cpus_from_firmware; /* actual max cpus, from firmware (ACPI) */ decl_simple_lock_data(extern, kdb_lock); /* kdb lock */ __BEGIN_DECLS extern void console_init(void); extern void *console_cpu_alloc(boolean_t boot_cpu); extern void console_cpu_free(void *console_buf); extern int kdb_cpu; /* current cpu running kdb */ extern int kdb_debug; extern int kdb_active[]; extern volatile boolean_t mp_kdp_trap; extern volatile boolean_t mp_kdp_is_NMI; extern volatile boolean_t force_immediate_debugger_NMI; extern volatile boolean_t pmap_tlb_flush_timeout; extern uint64_t LastDebuggerEntryAllowance; extern void mp_kdp_enter(boolean_t proceed_on_failure, bool is_stackshot); extern void mp_kdp_exit(void); extern boolean_t mp_kdp_all_cpus_halted(void); extern boolean_t mp_recent_debugger_activity(void); extern void kernel_spin(uint64_t spin_ns); /* * All cpu rendezvous: */ extern void mp_rendezvous( void (*setup_func)(void *), void (*action_func)(void *), void (*teardown_func)(void *), void *arg); extern void mp_rendezvous_no_intrs( void (*action_func)(void *), void *arg); extern void mp_rendezvous_break_lock(void); extern void mp_rendezvous_lock(void); extern void mp_rendezvous_unlock(void); /* * All cpu broadcast. * Called from thread context, this blocks until all active cpus have * run action_func: */ extern void mp_broadcast( void (*action_func)(void *), void *arg); #if MACH_KDP typedef long (*kdp_x86_xcpu_func_t) (void *arg0, void *arg1, uint16_t lcpu); extern long kdp_x86_xcpu_invoke(const uint16_t lcpu, kdp_x86_xcpu_func_t func, void *arg0, void *arg1, uint64_t timeout); typedef enum {KDP_XCPU_NONE = 0xffff, KDP_CURRENT_LCPU = 0xfffe} kdp_cpu_t; #endif typedef uint32_t cpu_t; typedef volatile uint64_t cpumask_t; static_assert(sizeof(cpumask_t) * CHAR_BIT >= MAX_CPUS, "cpumask_t bitvector is too small for current MAX_CPUS value"); static inline cpumask_t cpu_to_cpumask(cpu_t cpu) { return (cpu < MAX_CPUS) ? (1ULL << cpu) : 0; } #define CPUMASK_ALL 0xffffffffffffffffULL #define CPUMASK_SELF cpu_to_cpumask((cpu_t)cpu_number()) #define CPUMASK_OTHERS (CPUMASK_ALL & ~CPUMASK_SELF) #define CPUMASK_REAL_OTHERS (((1ULL << real_ncpus) - 1) & ~CPUMASK_SELF) /* Initialation routing called at processor registration */ extern void mp_cpus_call_cpu_init(int cpu); /* * Invoke a function (possibly NULL) on a set of cpus specified by a mask. * The mask may include the local cpu. * If the mode is: * - ASYNC: other cpus make their calls in parallel * - SYNC: the calls are performed serially in logical cpu order * - NOSYNC: the calls are queued * Unless the mode is NOSYNC, mp_cpus_call() returns when the function has been * called on all specified cpus. * The return value is the number of cpus where the call was made or queued. * The action function is called with interrupts disabled. */ extern cpu_t mp_cpus_call( cpumask_t cpus, mp_sync_t mode, void (*action_func)(void *), void *arg); extern cpu_t mp_cpus_call1( cpumask_t cpus, mp_sync_t mode, void (*action_func)(void *, void*), void *arg0, void *arg1, cpumask_t *cpus_calledp); typedef enum { NONE = 0, SPINLOCK_TIMEOUT, TLB_FLUSH_TIMEOUT, CROSSCALL_TIMEOUT, INTERRUPT_WATCHDOG, PTE_CORRUPTION } NMI_reason_t; extern NMI_reason_t NMI_panic_reason; extern void NMIPI_panic(cpumask_t cpus, NMI_reason_t reason); extern long NMI_pte_corruption_callback(void *arg0, void *arg1, uint16_t lcpu); /* Interrupt a set of cpus, forcing an exit out of non-root mode */ extern void mp_cpus_kick(cpumask_t cpus); /* * Power-management-specific SPI to: * - register a callout function, and * - request the callout (if registered) on a given cpu. */ extern void PM_interrupt_register(void (*fn)(void)); extern void cpu_PM_interrupt(int cpu); __END_DECLS #if MP_DEBUG typedef struct { uint64_t time; int cpu; mp_event_t event; } cpu_signal_event_t; #define LOG_NENTRIES 100 typedef struct { uint64_t count[MP_LAST]; int next_entry; cpu_signal_event_t entry[LOG_NENTRIES]; } cpu_signal_event_log_t; extern cpu_signal_event_log_t *cpu_signal[]; extern cpu_signal_event_log_t *cpu_handle[]; #define DBGLOG(log, _cpu, _event) { \ boolean_t spl = ml_set_interrupts_enabled(FALSE); \ cpu_signal_event_log_t *logp = log[cpu_number()]; \ int next = logp->next_entry; \ cpu_signal_event_t *eventp = &logp->entry[next]; \ \ logp->count[_event]++; \ \ eventp->time = rdtsc64(); \ eventp->cpu = _cpu; \ eventp->event = _event; \ if (next == (LOG_NENTRIES - 1)) \ logp->next_entry = 0; \ else \ logp->next_entry++; \ \ (void) ml_set_interrupts_enabled(spl); \ } #define DBGLOG_CPU_INIT(cpu) { \ cpu_signal_event_log_t **sig_logpp = &cpu_signal[cpu]; \ cpu_signal_event_log_t **hdl_logpp = &cpu_handle[cpu]; \ vm_size_t log_size = round_page(sizeof(cpu_signal_event_log_t)); \ kma_flags_t log_flags = KMA_NOFAIL | KMA_KOBJECT | \ KMA_PERMANENT | KMA_ZERO; \ \ if (*sig_logpp == NULL) { \ kmem_alloc(kernel_map, (vm_offset_t *)sig_logpp, \ log_size, log_flags, VM_KERN_MEMORY_DIAG); \ } \ if (*sig_logpp == NULL) { \ kmem_alloc(kernel_map, (vm_offset_t *)hdl_logpp, \ log_size, log_flags, VM_KERN_MEMORY_DIAG); \ } \ } #else /* MP_DEBUG */ #define DBGLOG(log, _cpu, _event) #define DBGLOG_CPU_INIT(cpu) #endif /* MP_DEBUG */ #endif /* ASSEMBLER */ #ifdef ASSEMBLER #define i_bit(bit, word) ((long)(*(word)) & (1L << (bit))) #else __attribute__((always_inline)) static inline long i_bit_impl(long word, long bit) { long bitmask = 1L << bit; return word & bitmask; } #define i_bit(bit, word) i_bit_impl((long)(*(word)), bit) #endif #endif /* _I386_MP_H_ */ #endif /* KERNEL_PRIVATE */ |