/*
- * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <mach/processor.h>
#include <kern/processor.h>
#include <kern/machine.h>
-#include <kern/cpu_data.h>
+
#include <kern/cpu_number.h>
#include <kern/thread.h>
+#include <kern/thread_call.h>
+#include <kern/policy_internal.h>
+
+#include <prng/random.h>
#include <i386/machine_cpu.h>
#include <i386/lapic.h>
-#include <i386/lock.h>
+#include <i386/bit_routines.h>
#include <i386/mp_events.h>
#include <i386/pmCPU.h>
#include <i386/trap.h>
#include <i386/pmap.h>
#include <i386/pmap_internal.h>
#include <i386/misc_protos.h>
-
+#include <kern/timer_queue.h>
+#if KPC
+#include <kern/kpc.h>
+#endif
+#include <architecture/i386/pio.h>
+#include <i386/cpu_data.h>
#if DEBUG
#define DBG(x...) kprintf("DBG: " x)
#else
#define DBG(x...)
#endif
+#if MONOTONIC
+#include <kern/monotonic.h>
+#endif /* MONOTONIC */
+
extern void wakeup(void *);
static int max_cpus_initialized = 0;
-unsigned int LockTimeOut;
-unsigned int LockTimeOutTSC;
-unsigned int MutexSpin;
+uint64_t LockTimeOut;
+uint64_t TLBTimeOut;
+uint64_t LockTimeOutTSC;
+uint32_t LockTimeOutUsec;
+uint64_t MutexSpin;
uint64_t LastDebuggerEntryAllowance;
uint64_t delay_spin_threshold;
boolean_t virtualized = FALSE;
+decl_simple_lock_data(static, ml_timer_evaluation_slock);
+uint32_t ml_timer_eager_evaluations;
+uint64_t ml_timer_eager_evaluation_max;
+static boolean_t ml_timer_evaluation_in_progress = FALSE;
+
+
#define MAX_CPUS_SET 0x1
#define MAX_CPUS_WAIT 0x2
}
pmap_remove(kernel_pmap, vaddr_cur, vaddr_cur+PAGE_SIZE);
assert(pmap_valid_page(ppn));
-
if (IS_MANAGED_PAGE(ppn)) {
vm_page_create(ppn,(ppn+1));
- vm_page_wire_count--;
freed_pages++;
}
}
}
+ vm_page_lockspin_queues();
+ vm_page_wire_count -= freed_pages;
+ vm_page_wire_count_initial -= freed_pages;
+ vm_page_unlock_queues();
+
#if DEBUG
kprintf("ml_static_mfree: Released 0x%x pages at VA %p, size:0x%llx, last ppn: 0x%x\n", freed_pages, (void *)vaddr, (uint64_t)size, ppn);
#endif
return nbytes;
}
+/*
+ * Routine: ml_validate_nofault
+ * Function: Validate that ths address range has a valid translations
+ * in the kernel pmap. If translations are present, they are
+ * assumed to be wired; i.e. no attempt is made to guarantee
+ * that the translation persist after the check.
+ * Returns: TRUE if the range is mapped and will not cause a fault,
+ * FALSE otherwise.
+ */
+
+boolean_t ml_validate_nofault(
+ vm_offset_t virtsrc, vm_size_t size)
+{
+ addr64_t cur_phys_src;
+ uint32_t count;
+
+ while (size > 0) {
+ if (!(cur_phys_src = kvtophys(virtsrc)))
+ return FALSE;
+ if (!pmap_valid_page(i386_btop(cur_phys_src)))
+ return FALSE;
+ count = (uint32_t)(PAGE_SIZE - (cur_phys_src & PAGE_MASK));
+ if (count > size)
+ count = (uint32_t)size;
+
+ virtsrc += count;
+ size -= count;
+ }
+
+ return TRUE;
+}
+
/* Interrupt handling */
/* Initialize Interrupts */
__asm__ volatile("pushf; pop %0" : "=r" (flags));
+ assert(get_interrupt_level() ? (enable == FALSE) : TRUE);
+
istate = ((flags & EFL_IF) != 0);
if (enable) {
__asm__ volatile("sti;nop");
if ((get_preemption_level() == 0) && (*ast_pending() & AST_URGENT))
- __asm__ volatile ("int $0xff");
+ __asm__ volatile ("int %0" :: "N" (T_PREEMPT));
}
else {
if (istate)
panic("ml_cause_interrupt not defined yet on Intel");
}
+/*
+ * TODO: transition users of this to kernel_thread_start_priority
+ * ml_thread_policy is an unsupported KPI
+ */
void ml_thread_policy(
thread_t thread,
__unused unsigned policy_id,
unsigned policy_info)
{
if (policy_info & MACHINE_NETWORK_WORKLOOP) {
- spl_t s = splsched();
+ thread_precedence_policy_data_t info;
+ __assert_only kern_return_t kret;
- thread_lock(thread);
+ info.importance = 1;
- set_priority(thread, thread->priority + 1);
-
- thread_unlock(thread);
- splx(s);
+ kret = thread_policy_set_internal(thread, THREAD_PRECEDENCE_POLICY,
+ (thread_policy_t)&info,
+ THREAD_PRECEDENCE_POLICY_COUNT);
+ assert(kret == KERN_SUCCESS);
}
}
{
boolean_t current_state;
- current_state = ml_get_interrupts_enabled();
+ current_state = ml_set_interrupts_enabled(FALSE);
PE_install_interrupt_handler(nub, source, target,
(IOInterruptHandler) handler, refCon);
cpu_interrupt(processor->cpu_id);
}
+void
+machine_signal_idle_deferred(
+ __unused processor_t processor)
+{
+ panic("Unimplemented");
+}
+
+void
+machine_signal_idle_cancel(
+ __unused processor_t processor)
+{
+ panic("Unimplemented");
+}
+
static kern_return_t
register_cpu(
uint32_t lapic_id,
if (this_cpu_datap->cpu_console_buf == NULL)
goto failed;
- this_cpu_datap->cpu_chud = chudxnu_cpu_alloc(boot_cpu);
- if (this_cpu_datap->cpu_chud == NULL)
+#if KPC
+ if (kpc_register_cpu(this_cpu_datap) != TRUE)
goto failed;
+#endif
if (!boot_cpu) {
cpu_thread_alloc(this_cpu_datap->cpu_number);
#if NCOPY_WINDOWS > 0
pmap_cpu_free(this_cpu_datap->cpu_pmap);
#endif
- chudxnu_cpu_free(this_cpu_datap->cpu_chud);
console_cpu_free(this_cpu_datap->cpu_console_buf);
+#if KPC
+ kpc_unregister_cpu(this_cpu_datap);
+#endif /* KPC */
+
return KERN_FAILURE;
}
/* fix the CPU id */
this_cpu_datap->cpu_id = cpu_id;
+ /* allocate and initialize other per-cpu structures */
+ if (!boot_cpu) {
+ mp_cpus_call_cpu_init(cpunum);
+ prng_cpu_init(cpunum);
+ }
+
/* output arg */
*processor_out = this_cpu_datap->cpu_processor;
return(machine_info.max_cpus);
}
+boolean_t
+ml_wants_panic_trap_to_debugger(void)
+{
+ return FALSE;
+}
+
+void
+ml_panic_trap_to_debugger(__unused const char *panic_format_str,
+ __unused va_list *panic_args,
+ __unused unsigned int reason,
+ __unused void *ctx,
+ __unused uint64_t panic_options_mask,
+ __unused unsigned long panic_caller)
+{
+ return;
+}
+
/*
* Routine: ml_init_lock_timeout
* Function:
{
uint64_t abstime;
uint32_t mtxspin;
+#if DEVELOPMENT || DEBUG
uint64_t default_timeout_ns = NSEC_PER_SEC>>2;
+#else
+ uint64_t default_timeout_ns = NSEC_PER_SEC>>1;
+#endif
uint32_t slto;
uint32_t prt;
if (PE_parse_boot_argn("slto_us", &slto, sizeof (slto)))
default_timeout_ns = slto * NSEC_PER_USEC;
- /* LockTimeOut is absolutetime, LockTimeOutTSC is in TSC ticks */
+ /*
+ * LockTimeOut is absolutetime, LockTimeOutTSC is in TSC ticks,
+ * and LockTimeOutUsec is in microseconds and it's 32-bits.
+ */
+ LockTimeOutUsec = (uint32_t) (default_timeout_ns / NSEC_PER_USEC);
nanoseconds_to_absolutetime(default_timeout_ns, &abstime);
- LockTimeOut = (uint32_t) abstime;
- LockTimeOutTSC = (uint32_t) tmrCvt(abstime, tscFCvtn2t);
+ LockTimeOut = abstime;
+ LockTimeOutTSC = tmrCvt(abstime, tscFCvtn2t);
+
+ /*
+ * TLBTimeOut dictates the TLB flush timeout period. It defaults to
+ * LockTimeOut but can be overriden separately. In particular, a
+ * zero value inhibits the timeout-panic and cuts a trace evnt instead
+ * - see pmap_flush_tlbs().
+ */
+ if (PE_parse_boot_argn("tlbto_us", &slto, sizeof (slto))) {
+ default_timeout_ns = slto * NSEC_PER_USEC;
+ nanoseconds_to_absolutetime(default_timeout_ns, &abstime);
+ TLBTimeOut = (uint32_t) abstime;
+ } else {
+ TLBTimeOut = LockTimeOut;
+ }
+
+#if DEVELOPMENT || DEBUG
+ reportphyreaddelayabs = LockTimeOut >> 1;
+#endif
+ if (PE_parse_boot_argn("phyreadmaxus", &slto, sizeof (slto))) {
+ default_timeout_ns = slto * NSEC_PER_USEC;
+ nanoseconds_to_absolutetime(default_timeout_ns, &abstime);
+ reportphyreaddelayabs = abstime;
+ }
if (PE_parse_boot_argn("mtxspin", &mtxspin, sizeof (mtxspin))) {
if (mtxspin > USEC_PER_SEC>>4)
nanoseconds_to_absolutetime(4ULL * NSEC_PER_SEC, &LastDebuggerEntryAllowance);
if (PE_parse_boot_argn("panic_restart_timeout", &prt, sizeof (prt)))
nanoseconds_to_absolutetime(prt * NSEC_PER_SEC, &panic_restart_timeout);
+
virtualized = ((cpuid_features() & CPUID_FEATURE_VMM) != 0);
+ if (virtualized) {
+ int vti;
+
+ if (!PE_parse_boot_argn("vti", &vti, sizeof (vti)))
+ vti = 6;
+ printf("Timeouts adjusted for virtualization (<<%d)\n", vti);
+ kprintf("Timeouts adjusted for virtualization (<<%d):\n", vti);
+#define VIRTUAL_TIMEOUT_INFLATE64(_timeout) \
+MACRO_BEGIN \
+ kprintf("%24s: 0x%016llx ", #_timeout, _timeout); \
+ _timeout <<= vti; \
+ kprintf("-> 0x%016llx\n", _timeout); \
+MACRO_END
+#define VIRTUAL_TIMEOUT_INFLATE32(_timeout) \
+MACRO_BEGIN \
+ kprintf("%24s: 0x%08x ", #_timeout, _timeout); \
+ if ((_timeout <<vti) >> vti == _timeout) \
+ _timeout <<= vti; \
+ else \
+ _timeout = ~0; /* cap rather than overflow */ \
+ kprintf("-> 0x%08x\n", _timeout); \
+MACRO_END
+ VIRTUAL_TIMEOUT_INFLATE32(LockTimeOutUsec);
+ VIRTUAL_TIMEOUT_INFLATE64(LockTimeOut);
+ VIRTUAL_TIMEOUT_INFLATE64(LockTimeOutTSC);
+ VIRTUAL_TIMEOUT_INFLATE64(TLBTimeOut);
+ VIRTUAL_TIMEOUT_INFLATE64(MutexSpin);
+ VIRTUAL_TIMEOUT_INFLATE64(reportphyreaddelayabs);
+ }
+
interrupt_latency_tracker_setup();
+ simple_lock_init(&ml_timer_evaluation_slock, 0);
}
/*
* Threshold above which we should attempt to block
* instead of spinning for clock_delay_until().
*/
+
void
ml_init_delay_spin_threshold(int threshold_us)
{
current_cpu_datap()->cpu_ldt == KERNEL_LDT)
return;
-#if defined(__i386__)
- /*
- * If 64bit this requires a mode switch (and back).
- */
- if (cpu_mode_is64bit())
- ml_64bit_lldt(selector);
- else
- lldt(selector);
-#else
lldt(selector);
-#endif
current_cpu_datap()->cpu_ldt = selector;
}
}
}
+#if KASAN
+vm_offset_t ml_stack_base(void);
+vm_size_t ml_stack_size(void);
+
+vm_offset_t
+ml_stack_base(void)
+{
+ if (ml_at_interrupt_context()) {
+ return current_cpu_datap()->cpu_int_stack_top - INTSTACK_SIZE;
+ } else {
+ return current_thread()->kernel_stack;
+ }
+}
+
+vm_size_t
+ml_stack_size(void)
+{
+ if (ml_at_interrupt_context()) {
+ return INTSTACK_SIZE;
+ } else {
+ return kernel_stack_size;
+ }
+}
+#endif
+
void
kernel_preempt_check(void)
{
}
boolean_t machine_timeout_suspended(void) {
- return (virtualized || pmap_tlb_flush_timeout || spinlock_timed_out || panic_active() || mp_recent_debugger_activity());
+ return (pmap_tlb_flush_timeout || spinlock_timed_out || panic_active() || mp_recent_debugger_activity() || ml_recent_wake());
+}
+
+/* Eagerly evaluate all pending timer and thread callouts
+ */
+void ml_timer_evaluate(void) {
+ KERNEL_DEBUG_CONSTANT(DECR_TIMER_RESCAN|DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ uint64_t te_end, te_start = mach_absolute_time();
+ simple_lock(&ml_timer_evaluation_slock);
+ ml_timer_evaluation_in_progress = TRUE;
+ thread_call_delayed_timer_rescan_all();
+ mp_cpus_call(CPUMASK_ALL, ASYNC, timer_queue_expire_rescan, NULL);
+ ml_timer_evaluation_in_progress = FALSE;
+ ml_timer_eager_evaluations++;
+ te_end = mach_absolute_time();
+ ml_timer_eager_evaluation_max = MAX(ml_timer_eager_evaluation_max, (te_end - te_start));
+ simple_unlock(&ml_timer_evaluation_slock);
+
+ KERNEL_DEBUG_CONSTANT(DECR_TIMER_RESCAN|DBG_FUNC_END, 0, 0, 0, 0, 0);
+}
+
+boolean_t
+ml_timer_forced_evaluation(void) {
+ return ml_timer_evaluation_in_progress;
+}
+
+/* 32-bit right-rotate n bits */
+static inline uint32_t ror32(uint32_t val, const unsigned int n)
+{
+ __asm__ volatile("rorl %%cl,%0" : "=r" (val) : "0" (val), "c" (n));
+ return val;
+}
+
+void
+ml_entropy_collect(void)
+{
+ uint32_t tsc_lo, tsc_hi;
+ uint32_t *ep;
+
+ assert(cpu_number() == master_cpu);
+
+ /* update buffer pointer cyclically */
+ if (EntropyData.index_ptr - EntropyData.buffer == ENTROPY_BUFFER_SIZE)
+ ep = EntropyData.index_ptr = EntropyData.buffer;
+ else
+ ep = EntropyData.index_ptr++;
+
+ rdtsc_nofence(tsc_lo, tsc_hi);
+ *ep = ror32(*ep, 9) ^ tsc_lo;
+}
+
+uint64_t
+ml_energy_stat(__unused thread_t t) {
+ return 0;
+}
+
+void
+ml_gpu_stat_update(uint64_t gpu_ns_delta) {
+ current_thread()->machine.thread_gpu_ns += gpu_ns_delta;
+}
+
+uint64_t
+ml_gpu_stat(thread_t t) {
+ return t->machine.thread_gpu_ns;
+}
+
+int plctrace_enabled = 0;
+
+void _disable_preemption(void) {
+ disable_preemption_internal();
+}
+
+void _enable_preemption(void) {
+ enable_preemption_internal();
+}
+
+void plctrace_disable(void) {
+ plctrace_enabled = 0;
+}
+
+static boolean_t ml_quiescing;
+
+void ml_set_is_quiescing(boolean_t quiescing)
+{
+ assert(FALSE == ml_get_interrupts_enabled());
+ ml_quiescing = quiescing;
+}
+
+boolean_t ml_is_quiescing(void)
+{
+ assert(FALSE == ml_get_interrupts_enabled());
+ return (ml_quiescing);
+}
+
+uint64_t ml_get_booter_memory_size(void)
+{
+ return (0);
}
projects / apple / xnu.git / blobdiff