/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
+ * 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,
* 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_LICENSE_HEADER_END@
+ *
+ * @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 _I386AT_MP_H_
-#define _I386AT_MP_H_
-
-#if !defined(NCPUS)
-#include <cpus.h>
-#endif /* !defined(NCPUS) */
+#ifndef _I386_MP_H_
+#define _I386_MP_H_
-#if NCPUS > 1
-
-#ifndef DEBUG
-#include <debug.h>
-#endif
-#if DEBUG
-#define MP_DEBUG 1
-#endif
+//#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>
-#define SPURIOUS_INTERRUPT 0xDD
-#define INTERPROCESS_INTERRUPT 0xDE
-#define APIC_ERROR_INTERRUPT 0xDF
+__BEGIN_DECLS
-#define LAPIC_ID_MAX (LAPIC_ID_MASK)
+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);
-#ifndef ASSEMBLER
-extern void lapic_dump(void);
-extern void lapic_interrupt(int interrupt, void *state);
-extern int lapic_to_cpu[];
-extern int cpu_to_lapic[];
-extern void lapic_cpu_map(int lapic, int cpu_num);
-#endif /* ASSEMBLER */
+extern void cpu_interrupt(int cpu);
+__END_DECLS
-#define CPU_NUMBER(r) \
- movl EXT(lapic_id),r; \
- movl 0(r),r; \
- shrl $(LAPIC_ID_SHIFT),r; \
- andl $(LAPIC_ID_MASK),r; \
- movl EXT(lapic_to_cpu)(,r,4),r
+extern unsigned int real_ncpus; /* real number of cpus */
+extern unsigned int max_ncpus; /* max number of cpus */
+decl_simple_lock_data(extern, kdb_lock); /* kdb lock */
+__BEGIN_DECLS
-#define MP_IPL SPL6 /* software interrupt level */
+extern void console_init(void);
+extern void *console_cpu_alloc(boolean_t boot_cpu);
+extern void console_cpu_free(void *console_buf);
-/* word describing the reason for the interrupt, one per cpu */
+extern int kdb_cpu; /* current cpu running kdb */
+extern int kdb_debug;
+extern int kdb_active[];
-#ifndef ASSEMBLER
-#include <kern/lock.h>
-extern int real_ncpus; /* real number of cpus */
-extern int wncpu; /* wanted number of cpus */
-decl_simple_lock_data(extern,kdb_lock) /* kdb lock */
-decl_simple_lock_data(extern,mp_putc_lock)
+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 volatile usimple_lock_t spinlock_timed_out;
+extern volatile uint32_t spinlock_owner_cpu;
+extern uint32_t spinlock_timeout_NMI(uintptr_t thread_addr);
-extern int kdb_cpu; /* current cpu running kdb */
-extern int kdb_debug;
-extern int kdb_is_slave[];
-extern int kdb_active[];
+extern uint64_t LastDebuggerEntryAllowance;
-extern volatile boolean_t mp_kdp_trap;
-extern void mp_trap_enter();
-extern void mp_trap_exit();
+extern void mp_kdp_enter(boolean_t proceed_on_failure);
+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(
+ 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);
+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_number())
+#define CPUMASK_OTHERS (CPUMASK_ALL & ~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
+} NMI_reason_t;
+extern void NMIPI_panic(cpumask_t cpus, NMI_reason_t reason);
+
+/* 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;
+ uint64_t time;
+ int cpu;
+ mp_event_t event;
} cpu_signal_event_t;
-#define LOG_NENTRIES 100
+#define LOG_NENTRIES 100
typedef struct {
- uint64_t count[MP_LAST];
- int next_entry;
- cpu_signal_event_t entry[LOG_NENTRIES];
+ 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[NCPUS];
-extern cpu_signal_event_log_t cpu_handle[NCPUS];
-
-#define DBGLOG(log,_cpu,_event) { \
- cpu_signal_event_log_t *logp = &log[cpu_number()]; \
- int next = logp->next_entry; \
- cpu_signal_event_t *eventp = &logp->entry[next]; \
- boolean_t spl = ml_set_interrupts_enabled(FALSE); \
- \
- 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); \
+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); \
}
-#else /* MP_DEBUG */
-#define DBGLOG(log,_cpu,_event)
-#endif /* MP_DEBUG */
-#endif /* ASSEMBLER */
-
-#define i_bit(bit, word) ((long)(*(word)) & ((long)1 << (bit)))
-
-
-/*
- * Device driver synchronization.
- *
- * at386_io_lock(op) and at386_io_unlock() are called
- * by device drivers when accessing H/W. The underlying
- * Processing is machine dependant. But the op argument
- * to the at386_io_lock is generic
- */
+#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]; \
+ \
+ if (*sig_logpp == NULL && \
+ kmem_alloc(kernel_map, \
+ (vm_offset_t *) sig_logpp, \
+ sizeof(cpu_signal_event_log_t)) != KERN_SUCCESS)\
+ panic("DBGLOG_CPU_INIT cpu_signal allocation failed\n");\
+ bzero(*sig_logpp, sizeof(cpu_signal_event_log_t)); \
+ if (*hdl_logpp == NULL && \
+ kmem_alloc(kernel_map, \
+ (vm_offset_t *) hdl_logpp, \
+ sizeof(cpu_signal_event_log_t)) != KERN_SUCCESS)\
+ panic("DBGLOG_CPU_INIT cpu_handle allocation failed\n");\
+ bzero(*hdl_logpp, sizeof(cpu_signal_event_log_t)); \
+}
+#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
-#define MP_DEV_OP_MAX 4
-#define MP_DEV_WAIT MP_DEV_OP_MAX /* Wait for the lock */
-/*
- * If the caller specifies an op value different than MP_DEV_WAIT, the
- * at386_io_lock function must return true if lock was successful else
- * false
- */
+#endif /* _I386_MP_H_ */
-#define MP_DEV_OP_START 0 /* If lock busy, register a pending start op */
-#define MP_DEV_OP_INTR 1 /* If lock busy, register a pending intr */
-#define MP_DEV_OP_TIMEO 2 /* If lock busy, register a pending timeout */
-#define MP_DEV_OP_CALLB 3 /* If lock busy, register a pending callback */
-
-#else /* NCPUS > 1 */
-#define at386_io_lock_state()
-#define at386_io_lock(op) (TRUE)
-#define at386_io_unlock()
-#define mp_trap_enter()
-#define mp_trap_exit()
-#include <i386/apic.h>
-#endif /* NCPUS > 1 */
-
-#if MACH_RT
-#define _DISABLE_PREEMPTION(r) \
- movl $ CPD_PREEMPTION_LEVEL,r ; \
- incl %gs:(r)
-
-#define _ENABLE_PREEMPTION(r) \
- movl $ CPD_PREEMPTION_LEVEL,r ; \
- decl %gs:(r) ; \
- jne 9f ; \
- pushl %eax ; \
- pushl %ecx ; \
- pushl %edx ; \
- call EXT(kernel_preempt_check) ; \
- popl %edx ; \
- popl %ecx ; \
- popl %eax ; \
-9:
-
-#define _ENABLE_PREEMPTION_NO_CHECK(r) \
- movl $ CPD_PREEMPTION_LEVEL,r ; \
- decl %gs:(r)
-
-#if MACH_ASSERT
-#define DISABLE_PREEMPTION(r) \
- pushl %eax; \
- pushl %ecx; \
- pushl %edx; \
- call EXT(_disable_preemption); \
- popl %edx; \
- popl %ecx; \
- popl %eax
-#define ENABLE_PREEMPTION(r) \
- pushl %eax; \
- pushl %ecx; \
- pushl %edx; \
- call EXT(_enable_preemption); \
- popl %edx; \
- popl %ecx; \
- popl %eax
-#define ENABLE_PREEMPTION_NO_CHECK(r) \
- pushl %eax; \
- pushl %ecx; \
- pushl %edx; \
- call EXT(_enable_preemption_no_check); \
- popl %edx; \
- popl %ecx; \
- popl %eax
-#if NCPUS > 1
-#define MP_DISABLE_PREEMPTION(r) \
- pushl %eax; \
- pushl %ecx; \
- pushl %edx; \
- call EXT(_mp_disable_preemption); \
- popl %edx; \
- popl %ecx; \
- popl %eax
-#define MP_ENABLE_PREEMPTION(r) \
- pushl %eax; \
- pushl %ecx; \
- pushl %edx; \
- call EXT(_mp_enable_preemption); \
- popl %edx; \
- popl %ecx; \
- popl %eax
-#define MP_ENABLE_PREEMPTION_NO_CHECK(r) \
- pushl %eax; \
- pushl %ecx; \
- pushl %edx; \
- call EXT(_mp_enable_preemption_no_check); \
- popl %edx; \
- popl %ecx; \
- popl %eax
-#else /* NCPUS > 1 */
-#define MP_DISABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION_NO_CHECK(r)
-#endif /* NCPUS > 1 */
-#else /* MACH_ASSERT */
-#define DISABLE_PREEMPTION(r) _DISABLE_PREEMPTION(r)
-#define ENABLE_PREEMPTION(r) _ENABLE_PREEMPTION(r)
-#define ENABLE_PREEMPTION_NO_CHECK(r) _ENABLE_PREEMPTION_NO_CHECK(r)
-#if NCPUS > 1
-#define MP_DISABLE_PREEMPTION(r) _DISABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION(r) _ENABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION_NO_CHECK(r) _ENABLE_PREEMPTION_NO_CHECK(r)
-#else /* NCPUS > 1 */
-#define MP_DISABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION_NO_CHECK(r)
-#endif /* NCPUS > 1 */
-#endif /* MACH_ASSERT */
-
-#else /* MACH_RT */
-#define DISABLE_PREEMPTION(r)
-#define ENABLE_PREEMPTION(r)
-#define ENABLE_PREEMPTION_NO_CHECK(r)
-#define MP_DISABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION(r)
-#define MP_ENABLE_PREEMPTION_NO_CHECK(r)
-#endif /* MACH_RT */
-
-#endif /* _I386AT_MP_H_ */
+#endif /* KERNEL_PRIVATE */
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