/*
- * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <kern/cpu_data.h>
#include <kern/cpu_number.h>
#include <kern/thread.h>
+#include <kern/thread_call.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>
#if DEBUG
#define DBG(x...) kprintf("DBG: " x)
static int max_cpus_initialized = 0;
unsigned int LockTimeOut;
+unsigned int TLBTimeOut;
unsigned int LockTimeOutTSC;
unsigned int MutexSpin;
uint64_t LastDebuggerEntryAllowance;
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)
return get_interrupt_level() != 0;
}
+void ml_get_power_state(boolean_t *icp, boolean_t *pidlep) {
+ *icp = (get_interrupt_level() != 0);
+ /* These will be technically inaccurate for interrupts that occur
+ * successively within a single "idle exit" event, but shouldn't
+ * matter statistically.
+ */
+ *pidlep = (current_cpu_datap()->lcpu.package->num_idle == topoParms.nLThreadsPerPackage);
+}
+
/* Generate a fake interrupt */
void ml_cause_interrupt(void)
{
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);
}
}
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_chud == NULL)
goto failed;
+#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 (this_cpu_datap->lcpu.core == NULL)
#endif
chudxnu_cpu_free(this_cpu_datap->cpu_chud);
console_cpu_free(this_cpu_datap->cpu_console_buf);
+#if KPC
+ kpc_counterbuf_free(this_cpu_datap->cpu_kpc_buf[0]);
+ kpc_counterbuf_free(this_cpu_datap->cpu_kpc_buf[1]);
+ kpc_counterbuf_free(this_cpu_datap->cpu_kpc_shadow);
+ kpc_counterbuf_free(this_cpu_datap->cpu_kpc_reload);
+#endif
+
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;
{
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;
LockTimeOut = (uint32_t) abstime;
LockTimeOutTSC = (uint32_t) 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 (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)
mtxspin = USEC_PER_SEC>>4;
nanoseconds_to_absolutetime(prt * NSEC_PER_SEC, &panic_restart_timeout);
virtualized = ((cpuid_features() & CPUID_FEATURE_VMM) != 0);
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(void)
+ml_init_delay_spin_threshold(int threshold_us)
{
- nanoseconds_to_absolutetime(10ULL * NSEC_PER_USEC, &delay_spin_threshold);
+ nanoseconds_to_absolutetime(threshold_us * NSEC_PER_USEC, &delay_spin_threshold);
}
boolean_t
}
/*
- * This is called from the machine-independent routine cpu_up()
+ * This is called from the machine-independent layer
* to perform machine-dependent info updates. Defer to cpu_thread_init().
*/
void
}
/*
- * This is called from the machine-independent routine cpu_down()
+ * This is called from the machine-independent layer
* to perform machine-dependent info updates.
*/
void
ml_cpu_down(void)
{
+ i386_deactivate_cpu();
+
return;
}
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;
}
}
boolean_t machine_timeout_suspended(void) {
- return (virtualized || pmap_tlb_flush_timeout || spinlock_timed_out || panic_active() || mp_recent_debugger_activity());
+ return (virtualized || 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;
+}
+
+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;
}
projects / apple / xnu.git / blobdiff