* cpu routines common to all supported arm variants
*/
-#include <kern/kalloc.h>
#include <kern/machine.h>
#include <kern/cpu_number.h>
#include <kern/thread.h>
+#include <kern/percpu.h>
#include <kern/timer_queue.h>
+#include <kern/locks.h>
#include <arm/cpu_data.h>
#include <arm/cpuid.h>
#include <arm/caches_internal.h>
#include <pexpert/device_tree.h>
#include <sys/kdebug.h>
#include <arm/machine_routines.h>
+#include <arm/proc_reg.h>
#include <libkern/OSAtomic.h>
-#if KPERF
-void kperf_signal_handler(unsigned int cpu_number);
-#endif
-
-cpu_data_t BootCpuData;
+SECURITY_READ_ONLY_LATE(struct percpu_base) percpu_base;
+vm_address_t percpu_base_cur;
+cpu_data_t PERCPU_DATA(cpu_data);
cpu_data_entry_t CpuDataEntries[MAX_CPUS];
-struct processor BootProcessor;
+static lck_grp_t cpu_lck_grp;
+static lck_rw_t cpu_state_lock;
unsigned int real_ncpus = 1;
boolean_t idle_enable = FALSE;
uint64_t wake_abstime = 0x0ULL;
+#if defined(HAS_IPI)
+extern unsigned int gFastIPI;
+#endif /* defined(HAS_IPI) */
cpu_data_t *
cpu_datap(int cpu)
{
- assert(cpu < MAX_CPUS);
+ assert(cpu <= ml_get_max_cpu_number());
return CpuDataEntries[cpu].cpu_data_vaddr;
}
cpu_stat->vfp_shortv_cnt = 0;
cpu_stat->data_ex_cnt = cpu_data_ptr->cpu_stat.data_ex_cnt;
cpu_stat->instr_ex_cnt = cpu_data_ptr->cpu_stat.instr_ex_cnt;
- cpu_stat->pmi_cnt = cpu_data_ptr->cpu_stat.pmi_cnt;
+#if MONOTONIC
+ cpu_stat->pmi_cnt = cpu_data_ptr->cpu_monotonic.mtc_npmis;
+#endif /* MONOTONIC */
*count = PROCESSOR_CPU_STAT64_COUNT;
intr = ml_set_interrupts_enabled(FALSE);
cpu_data_ptr = getCpuDatap();
- if (cpu_data_ptr->idle_timer_notify != (void *)NULL) {
- ((idle_timer_t)cpu_data_ptr->idle_timer_notify)(cpu_data_ptr->idle_timer_refcon, &new_idle_timeout_ticks);
+ if (cpu_data_ptr->idle_timer_notify != NULL) {
+ cpu_data_ptr->idle_timer_notify(cpu_data_ptr->idle_timer_refcon, &new_idle_timeout_ticks);
if (new_idle_timeout_ticks != 0x0ULL) {
/* if a new idle timeout was requested set the new idle timer deadline */
clock_absolutetime_interval_to_deadline(new_idle_timeout_ticks, &cpu_data_ptr->idle_timer_deadline);
broadcastFunc xfunc;
void *xparam;
- __c11_atomic_thread_fence(memory_order_acquire_smp);
+ os_atomic_thread_fence(acquire);
/* Come back around if cpu_signal_internal is running on another CPU and has just
* added SIGPxcall to the pending mask, but hasn't yet assigned the call params.*/
if (cpu_data_ptr->cpu_xcall_p0 != NULL && cpu_data_ptr->cpu_xcall_p1 != NULL) {
xfunc = cpu_data_ptr->cpu_xcall_p0;
+ INTERRUPT_MASKED_DEBUG_START(xfunc, DBG_INTR_TYPE_IPI);
xparam = cpu_data_ptr->cpu_xcall_p1;
cpu_data_ptr->cpu_xcall_p0 = NULL;
cpu_data_ptr->cpu_xcall_p1 = NULL;
- __c11_atomic_thread_fence(memory_order_acq_rel_smp);
- hw_atomic_and_noret(&cpu_data_ptr->cpu_signal, ~SIGPxcall);
+ os_atomic_thread_fence(acq_rel);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPxcall, relaxed);
xfunc(xparam);
+ INTERRUPT_MASKED_DEBUG_END();
+ }
+ if (cpu_data_ptr->cpu_imm_xcall_p0 != NULL && cpu_data_ptr->cpu_imm_xcall_p1 != NULL) {
+ xfunc = cpu_data_ptr->cpu_imm_xcall_p0;
+ INTERRUPT_MASKED_DEBUG_START(xfunc, DBG_INTR_TYPE_IPI);
+ xparam = cpu_data_ptr->cpu_imm_xcall_p1;
+ cpu_data_ptr->cpu_imm_xcall_p0 = NULL;
+ cpu_data_ptr->cpu_imm_xcall_p1 = NULL;
+ os_atomic_thread_fence(acq_rel);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPxcallImm, relaxed);
+ xfunc(xparam);
+ INTERRUPT_MASKED_DEBUG_END();
}
}
-unsigned int
-cpu_broadcast_xcall(uint32_t *synch,
+static unsigned int
+cpu_broadcast_xcall_internal(unsigned int signal,
+ uint32_t *synch,
boolean_t self_xcall,
broadcastFunc func,
void *parm)
cpu_data_t *target_cpu_datap;
unsigned int failsig;
int cpu;
- int max_cpu;
+ int max_cpu = ml_get_max_cpu_number() + 1;
+
+ //yes, param ALSO cannot be NULL
+ assert(func);
+ assert(parm);
intr = ml_set_interrupts_enabled(FALSE);
cpu_data_ptr = getCpuDatap();
failsig = 0;
if (synch != NULL) {
- *synch = real_ncpus;
+ *synch = max_cpu;
assert_wait((event_t)synch, THREAD_UNINT);
}
- max_cpu = ml_get_max_cpu_number();
- for (cpu = 0; cpu <= max_cpu; cpu++) {
+ for (cpu = 0; cpu < max_cpu; cpu++) {
target_cpu_datap = (cpu_data_t *)CpuDataEntries[cpu].cpu_data_vaddr;
- if ((target_cpu_datap == NULL) || (target_cpu_datap == cpu_data_ptr)) {
+ if (target_cpu_datap == cpu_data_ptr) {
continue;
}
- if (KERN_SUCCESS != cpu_signal(target_cpu_datap, SIGPxcall, (void *)func, parm)) {
+ if ((target_cpu_datap == NULL) ||
+ KERN_SUCCESS != cpu_signal(target_cpu_datap, signal, (void *)func, parm)) {
failsig++;
}
}
(void) ml_set_interrupts_enabled(intr);
if (synch != NULL) {
- if (hw_atomic_sub(synch, (!self_xcall)? failsig + 1 : failsig) == 0) {
+ if (os_atomic_sub(synch, (!self_xcall) ? failsig + 1 : failsig, relaxed) == 0) {
clear_wait(current_thread(), THREAD_AWAKENED);
} else {
thread_block(THREAD_CONTINUE_NULL);
}
if (!self_xcall) {
- return real_ncpus - failsig - 1;
+ return max_cpu - failsig - 1;
} else {
- return real_ncpus - failsig;
+ return max_cpu - failsig;
}
}
-kern_return_t
-cpu_xcall(int cpu_number, broadcastFunc func, void *param)
+unsigned int
+cpu_broadcast_xcall(uint32_t *synch,
+ boolean_t self_xcall,
+ broadcastFunc func,
+ void *parm)
+{
+ return cpu_broadcast_xcall_internal(SIGPxcall, synch, self_xcall, func, parm);
+}
+
+struct cpu_broadcast_xcall_simple_data {
+ broadcastFunc func;
+ void* parm;
+ uint32_t sync;
+};
+
+static void
+cpu_broadcast_xcall_simple_cbk(void *parm)
+{
+ struct cpu_broadcast_xcall_simple_data *data = (struct cpu_broadcast_xcall_simple_data*)parm;
+
+ data->func(data->parm);
+
+ if (os_atomic_dec(&data->sync, relaxed) == 0) {
+ thread_wakeup((event_t)&data->sync);
+ }
+}
+
+static unsigned int
+cpu_xcall_simple(boolean_t self_xcall,
+ broadcastFunc func,
+ void *parm,
+ bool immediate)
+{
+ struct cpu_broadcast_xcall_simple_data data = {};
+
+ data.func = func;
+ data.parm = parm;
+
+ return cpu_broadcast_xcall_internal(immediate ? SIGPxcallImm : SIGPxcall, &data.sync, self_xcall, cpu_broadcast_xcall_simple_cbk, &data);
+}
+
+unsigned int
+cpu_broadcast_immediate_xcall(uint32_t *synch,
+ boolean_t self_xcall,
+ broadcastFunc func,
+ void *parm)
+{
+ return cpu_broadcast_xcall_internal(SIGPxcallImm, synch, self_xcall, func, parm);
+}
+
+unsigned int
+cpu_broadcast_xcall_simple(boolean_t self_xcall,
+ broadcastFunc func,
+ void *parm)
+{
+ return cpu_xcall_simple(self_xcall, func, parm, false);
+}
+
+unsigned int
+cpu_broadcast_immediate_xcall_simple(boolean_t self_xcall,
+ broadcastFunc func,
+ void *parm)
+{
+ return cpu_xcall_simple(self_xcall, func, parm, true);
+}
+
+static kern_return_t
+cpu_xcall_internal(unsigned int signal, int cpu_number, broadcastFunc func, void *param)
{
cpu_data_t *target_cpu_datap;
return KERN_INVALID_ARGUMENT;
}
+ if (func == NULL || param == NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
target_cpu_datap = (cpu_data_t*)CpuDataEntries[cpu_number].cpu_data_vaddr;
if (target_cpu_datap == NULL) {
return KERN_INVALID_ARGUMENT;
}
- return cpu_signal(target_cpu_datap, SIGPxcall, (void*)func, param);
+ return cpu_signal(target_cpu_datap, signal, (void*)func, param);
+}
+
+kern_return_t
+cpu_xcall(int cpu_number, broadcastFunc func, void *param)
+{
+ return cpu_xcall_internal(SIGPxcall, cpu_number, func, param);
+}
+
+kern_return_t
+cpu_immediate_xcall(int cpu_number, broadcastFunc func, void *param)
+{
+ return cpu_xcall_internal(SIGPxcallImm, cpu_number, func, param);
}
static kern_return_t
Check_SIGPdisabled = 0;
}
- if (signal == SIGPxcall) {
+ if ((signal == SIGPxcall) || (signal == SIGPxcallImm)) {
do {
current_signals = target_proc->cpu_signal;
if ((current_signals & SIGPdisabled) == SIGPdisabled) {
-#if DEBUG || DEVELOPMENT
- target_proc->failed_signal = SIGPxcall;
- target_proc->failed_xcall = p0;
- OSIncrementAtomicLong(&target_proc->failed_signal_count);
-#endif
ml_set_interrupts_enabled(interruptible);
return KERN_FAILURE;
}
- swap_success = OSCompareAndSwap(current_signals & (~SIGPxcall), current_signals | SIGPxcall,
+ swap_success = OSCompareAndSwap(current_signals & (~signal), current_signals | signal,
&target_proc->cpu_signal);
+ if (!swap_success && (signal == SIGPxcallImm) && (target_proc->cpu_signal & SIGPxcallImm)) {
+ ml_set_interrupts_enabled(interruptible);
+ return KERN_ALREADY_WAITING;
+ }
+
/* Drain pending xcalls on this cpu; the CPU we're trying to xcall may in turn
* be trying to xcall us. Since we have interrupts disabled that can deadlock,
* so break the deadlock by draining pending xcalls. */
- if (!swap_success && (current_proc->cpu_signal & SIGPxcall)) {
+ if (!swap_success && (current_proc->cpu_signal & signal)) {
cpu_handle_xcall(current_proc);
}
} while (!swap_success);
- target_proc->cpu_xcall_p0 = p0;
- target_proc->cpu_xcall_p1 = p1;
+ if (signal == SIGPxcallImm) {
+ target_proc->cpu_imm_xcall_p0 = p0;
+ target_proc->cpu_imm_xcall_p1 = p1;
+ } else {
+ target_proc->cpu_xcall_p0 = p0;
+ target_proc->cpu_xcall_p1 = p1;
+ }
} else {
do {
current_signals = target_proc->cpu_signal;
if ((Check_SIGPdisabled != 0) && (current_signals & Check_SIGPdisabled) == SIGPdisabled) {
-#if DEBUG || DEVELOPMENT
- target_proc->failed_signal = signal;
- OSIncrementAtomicLong(&target_proc->failed_signal_count);
-#endif
ml_set_interrupts_enabled(interruptible);
return KERN_FAILURE;
}
if (!(target_proc->cpu_signal & SIGPdisabled)) {
if (defer) {
+#if defined(HAS_IPI)
+ if (gFastIPI) {
+ ml_cpu_signal_deferred(target_proc->cpu_phys_id);
+ } else {
+ PE_cpu_signal_deferred(getCpuDatap()->cpu_id, target_proc->cpu_id);
+ }
+#else
PE_cpu_signal_deferred(getCpuDatap()->cpu_id, target_proc->cpu_id);
+#endif /* defined(HAS_IPI) */
} else {
+#if defined(HAS_IPI)
+ if (gFastIPI) {
+ ml_cpu_signal(target_proc->cpu_phys_id);
+ } else {
+ PE_cpu_signal(getCpuDatap()->cpu_id, target_proc->cpu_id);
+ }
+#else
PE_cpu_signal(getCpuDatap()->cpu_id, target_proc->cpu_id);
+#endif /* defined(HAS_IPI) */
}
}
{
/* TODO: Should we care about the state of a core as far as squashing deferred IPIs goes? */
if (!(target_proc->cpu_signal & SIGPdisabled)) {
+#if defined(HAS_IPI)
+ if (gFastIPI) {
+ ml_cpu_signal_retract(target_proc->cpu_phys_id);
+ } else {
+ PE_cpu_signal_cancel(getCpuDatap()->cpu_id, target_proc->cpu_id);
+ }
+#else
PE_cpu_signal_cancel(getCpuDatap()->cpu_id, target_proc->cpu_id);
+#endif /* defined(HAS_IPI) */
}
}
cpu_data_t *cpu_data_ptr = getCpuDatap();
unsigned int cpu_signal;
-
cpu_data_ptr->cpu_stat.ipi_cnt++;
cpu_data_ptr->cpu_stat.ipi_cnt_wake++;
+ SCHED_STATS_INC(ipi_count);
- SCHED_STATS_IPI(current_processor());
-
- cpu_signal = hw_atomic_or(&cpu_data_ptr->cpu_signal, 0);
+ cpu_signal = os_atomic_or(&cpu_data_ptr->cpu_signal, 0, relaxed);
if ((!(cpu_signal & SIGPdisabled)) && (disable_signal == TRUE)) {
- (void)hw_atomic_or(&cpu_data_ptr->cpu_signal, SIGPdisabled);
+ os_atomic_or(&cpu_data_ptr->cpu_signal, SIGPdisabled, relaxed);
} else if ((cpu_signal & SIGPdisabled) && (disable_signal == FALSE)) {
- (void)hw_atomic_and(&cpu_data_ptr->cpu_signal, ~SIGPdisabled);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPdisabled, relaxed);
}
while (cpu_signal & ~SIGPdisabled) {
if (cpu_signal & SIGPdec) {
- (void)hw_atomic_and(&cpu_data_ptr->cpu_signal, ~SIGPdec);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPdec, relaxed);
+ INTERRUPT_MASKED_DEBUG_START(rtclock_intr, DBG_INTR_TYPE_IPI);
rtclock_intr(FALSE);
+ INTERRUPT_MASKED_DEBUG_END();
}
#if KPERF
- if (cpu_signal & SIGPkptimer) {
- (void)hw_atomic_and(&cpu_data_ptr->cpu_signal, ~SIGPkptimer);
- kperf_signal_handler((unsigned int)cpu_data_ptr->cpu_number);
+ if (cpu_signal & SIGPkppet) {
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPkppet, relaxed);
+ extern void kperf_signal_handler(void);
+ INTERRUPT_MASKED_DEBUG_START(kperf_signal_handler, DBG_INTR_TYPE_IPI);
+ kperf_signal_handler();
+ INTERRUPT_MASKED_DEBUG_END();
}
-#endif
- if (cpu_signal & SIGPxcall) {
+#endif /* KPERF */
+ if (cpu_signal & (SIGPxcall | SIGPxcallImm)) {
cpu_handle_xcall(cpu_data_ptr);
}
if (cpu_signal & SIGPast) {
- (void)hw_atomic_and(&cpu_data_ptr->cpu_signal, ~SIGPast);
- ast_check(cpu_data_ptr->cpu_processor);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPast, relaxed);
+ INTERRUPT_MASKED_DEBUG_START(ast_check, DBG_INTR_TYPE_IPI);
+ ast_check(current_processor());
+ INTERRUPT_MASKED_DEBUG_END();
}
if (cpu_signal & SIGPdebug) {
- (void)hw_atomic_and(&cpu_data_ptr->cpu_signal, ~SIGPdebug);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPdebug, relaxed);
+ INTERRUPT_MASKED_DEBUG_START(DebuggerXCall, DBG_INTR_TYPE_IPI);
DebuggerXCall(cpu_data_ptr->cpu_int_state);
+ INTERRUPT_MASKED_DEBUG_END();
}
-#if __ARM_SMP__ && defined(ARMA7)
+#if defined(ARMA7)
if (cpu_signal & SIGPLWFlush) {
- (void)hw_atomic_and(&cpu_data_ptr->cpu_signal, ~SIGPLWFlush);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPLWFlush, relaxed);
+ INTERRUPT_MASKED_DEBUG_START(cache_xcall_handler, DBG_INTR_TYPE_IPI);
cache_xcall_handler(LWFlush);
+ INTERRUPT_MASKED_DEBUG_END();
}
if (cpu_signal & SIGPLWClean) {
- (void)hw_atomic_and(&cpu_data_ptr->cpu_signal, ~SIGPLWClean);
+ os_atomic_andnot(&cpu_data_ptr->cpu_signal, SIGPLWClean, relaxed);
+ INTERRUPT_MASKED_DEBUG_START(cache_xcall_handler, DBG_INTR_TYPE_IPI);
cache_xcall_handler(LWClean);
+ INTERRUPT_MASKED_DEBUG_END();
}
#endif
- cpu_signal = hw_atomic_or(&cpu_data_ptr->cpu_signal, 0);
+ cpu_signal = os_atomic_or(&cpu_data_ptr->cpu_signal, 0, relaxed);
}
}
void
-cpu_exit_wait(int cpu)
-{
- if (cpu != master_cpu) {
+cpu_exit_wait(int cpu_id)
+{
+#if USE_APPLEARMSMP
+ if (!ml_is_quiescing()) {
+ // For runtime disable (non S2R) the CPU will shut down immediately.
+ ml_topology_cpu_t *cpu = &ml_get_topology_info()->cpus[cpu_id];
+ assert(cpu && cpu->cpu_IMPL_regs);
+ volatile uint64_t *cpu_sts = (void *)(cpu->cpu_IMPL_regs + CPU_PIO_CPU_STS_OFFSET);
+
+ // Poll the "CPU running state" field until it is 0 (off)
+ while ((*cpu_sts & CPU_PIO_CPU_STS_cpuRunSt_mask) != 0x00) {
+ __builtin_arm_dsb(DSB_ISH);
+ }
+ return;
+ }
+#endif /* USE_APPLEARMSMP */
+
+ if (cpu_id != master_cpu) {
+ // For S2R, ml_arm_sleep() will do some extra polling after setting ARM_CPU_ON_SLEEP_PATH.
cpu_data_t *cpu_data_ptr;
- cpu_data_ptr = CpuDataEntries[cpu].cpu_data_vaddr;
+ cpu_data_ptr = CpuDataEntries[cpu_id].cpu_data_vaddr;
while (!((*(volatile unsigned int*)&cpu_data_ptr->cpu_sleep_token) == ARM_CPU_ON_SLEEP_PATH)) {
}
;
cpu_data_ptr = getCpuDatap();
started = ((cpu_data_ptr->cpu_flags & StartedState) == StartedState);
- if (cpu_data_ptr->cpu_cache_dispatch != (cache_dispatch_t) NULL) {
+ if (cpu_data_ptr->cpu_cache_dispatch != NULL) {
platform_cache_init();
}
+
+ /* Note: this calls IOCPURunPlatformActiveActions when resuming on boot cpu */
PE_cpu_machine_init(cpu_data_ptr->cpu_id, !started);
+
cpu_data_ptr->cpu_flags |= StartedState;
ml_init_interrupt();
}
-processor_t
-cpu_processor_alloc(boolean_t is_boot_cpu)
-{
- processor_t proc;
-
- if (is_boot_cpu) {
- return &BootProcessor;
- }
-
- proc = kalloc(sizeof(*proc));
- if (!proc) {
- return NULL;
- }
-
- bzero((void *) proc, sizeof(*proc));
- return proc;
-}
-
-void
-cpu_processor_free(processor_t proc)
-{
- if (proc != NULL && proc != &BootProcessor) {
- kfree(proc, sizeof(*proc));
- }
-}
-
processor_t
current_processor(void)
{
- return getCpuDatap()->cpu_processor;
+ return PERCPU_GET(processor);
}
processor_t
{
cpu_data_t *cpu_data = cpu_datap(cpu);
if (cpu_data != NULL) {
- return cpu_data->cpu_processor;
+ return PERCPU_GET_RELATIVE(processor, cpu_data, cpu_data);
} else {
return NULL;
}
cpu_data_t *
processor_to_cpu_datap(processor_t processor)
{
- cpu_data_t *target_cpu_datap;
-
- assert(processor->cpu_id < MAX_CPUS);
+ assert(processor->cpu_id <= ml_get_max_cpu_number());
assert(CpuDataEntries[processor->cpu_id].cpu_data_vaddr != NULL);
- target_cpu_datap = (cpu_data_t*)CpuDataEntries[processor->cpu_id].cpu_data_vaddr;
- assert(target_cpu_datap->cpu_processor == processor);
+ return PERCPU_GET_RELATIVE(cpu_data, processor, processor);
+}
+
+__startup_func
+static void
+cpu_data_startup_init(void)
+{
+ vm_size_t size = percpu_section_size() * (ml_get_cpu_count() - 1);
+
+ percpu_base.size = percpu_section_size();
+ if (ml_get_cpu_count() == 1) {
+ percpu_base.start = VM_MAX_KERNEL_ADDRESS;
+ return;
+ }
+
+ /*
+ * The memory needs to be physically contiguous because it contains
+ * cpu_data_t structures sometimes accessed during reset
+ * with the MMU off.
+ *
+ * kmem_alloc_contig() can't be used early, at the time STARTUP_SUB_PERCPU
+ * normally runs, so we instead steal the memory for the PERCPU subsystem
+ * even earlier.
+ */
+ percpu_base.start = (vm_offset_t)pmap_steal_memory(round_page(size));
+ bzero((void *)percpu_base.start, round_page(size));
- return target_cpu_datap;
+ percpu_base.start -= percpu_section_start();
+ percpu_base.end = percpu_base.start + size - 1;
+ percpu_base_cur = percpu_base.start;
}
+STARTUP(PMAP_STEAL, STARTUP_RANK_FIRST, cpu_data_startup_init);
cpu_data_t *
cpu_data_alloc(boolean_t is_boot_cpu)
{
- cpu_data_t *cpu_data_ptr = NULL;
+ cpu_data_t *cpu_data_ptr = NULL;
+ vm_address_t base;
if (is_boot_cpu) {
- cpu_data_ptr = &BootCpuData;
+ cpu_data_ptr = PERCPU_GET_MASTER(cpu_data);
} else {
- if ((kmem_alloc(kernel_map, (vm_offset_t *)&cpu_data_ptr, sizeof(cpu_data_t), VM_KERN_MEMORY_CPU)) != KERN_SUCCESS) {
- goto cpu_data_alloc_error;
- }
-
- bzero((void *)cpu_data_ptr, sizeof(cpu_data_t));
+ base = os_atomic_add_orig(&percpu_base_cur,
+ percpu_section_size(), relaxed);
+ cpu_data_ptr = PERCPU_GET_WITH_BASE(base, cpu_data);
cpu_stack_alloc(cpu_data_ptr);
}
- cpu_data_ptr->cpu_processor = cpu_processor_alloc(is_boot_cpu);
- if (cpu_data_ptr->cpu_processor == (struct processor *)NULL) {
- goto cpu_data_alloc_error;
- }
-
return cpu_data_ptr;
-
-cpu_data_alloc_error:
- panic("cpu_data_alloc() failed\n");
- return (cpu_data_t *)NULL;
}
ast_t *
return getCpuDatap()->cpu_number;
}
+vm_offset_t
+current_percpu_base(void)
+{
+ return current_thread()->machine.pcpu_data_base;
+}
+
uint64_t
ml_get_wake_timebase(void)
{
return wake_abstime;
}
+
+bool
+ml_cpu_signal_is_enabled(void)
+{
+ return !(getCpuDatap()->cpu_signal & SIGPdisabled);
+}
+
+bool
+ml_cpu_can_exit(__unused int cpu_id)
+{
+ /* processor_exit() is always allowed on the S2R path */
+ if (ml_is_quiescing()) {
+ return true;
+ }
+#if HAS_CLUSTER && USE_APPLEARMSMP
+ /*
+ * Cyprus and newer chips can disable individual non-boot CPUs. The
+ * implementation polls cpuX_IMPL_CPU_STS, which differs on older chips.
+ */
+ if (CpuDataEntries[cpu_id].cpu_data_vaddr != &BootCpuData) {
+ return true;
+ }
+#endif
+ return false;
+}
+
+void
+ml_cpu_init_state(void)
+{
+ lck_grp_init(&cpu_lck_grp, "cpu_lck_grp", LCK_GRP_ATTR_NULL);
+ lck_rw_init(&cpu_state_lock, &cpu_lck_grp, LCK_ATTR_NULL);
+}
+
+#ifdef USE_APPLEARMSMP
+
+void
+ml_cpu_begin_state_transition(int cpu_id)
+{
+ lck_rw_lock_exclusive(&cpu_state_lock);
+ CpuDataEntries[cpu_id].cpu_data_vaddr->in_state_transition = true;
+ lck_rw_unlock_exclusive(&cpu_state_lock);
+}
+
+void
+ml_cpu_end_state_transition(int cpu_id)
+{
+ lck_rw_lock_exclusive(&cpu_state_lock);
+ CpuDataEntries[cpu_id].cpu_data_vaddr->in_state_transition = false;
+ lck_rw_unlock_exclusive(&cpu_state_lock);
+}
+
+void
+ml_cpu_begin_loop(void)
+{
+ lck_rw_lock_shared(&cpu_state_lock);
+}
+
+void
+ml_cpu_end_loop(void)
+{
+ lck_rw_unlock_shared(&cpu_state_lock);
+}
+
+#else /* USE_APPLEARMSMP */
+
+void
+ml_cpu_begin_state_transition(__unused int cpu_id)
+{
+}
+
+void
+ml_cpu_end_state_transition(__unused int cpu_id)
+{
+}
+
+void
+ml_cpu_begin_loop(void)
+{
+}
+
+void
+ml_cpu_end_loop(void)
+{
+}
+
+#endif /* USE_APPLEARMSMP */
projects / apple / xnu.git / blobdiff