/*
- * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 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
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
#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 <prng/entropy.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>
+#include <vm/vm_map.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)
+#define DBG(x...) kprintf("DBG: " x)
#else
#define DBG(x...)
#endif
-extern void wakeup(void *);
+#if MONOTONIC
+#include <kern/monotonic.h>
+#endif /* MONOTONIC */
-static int max_cpus_initialized = 0;
+extern void wakeup(void *);
-unsigned int LockTimeOut;
-unsigned int LockTimeOutTSC;
-unsigned int MutexSpin;
-uint64_t LastDebuggerEntryAllowance;
-uint64_t delay_spin_threshold;
+uint64_t LockTimeOut;
+uint64_t TLBTimeOut;
+uint64_t LockTimeOutTSC;
+uint32_t LockTimeOutUsec;
+uint64_t MutexSpin;
+uint64_t low_MutexSpin;
+int64_t high_MutexSpin;
+uint64_t LastDebuggerEntryAllowance;
+uint64_t delay_spin_threshold;
extern uint64_t panic_restart_timeout;
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;
+
+LCK_GRP_DECLARE(max_cpus_grp, "max_cpus");
+LCK_MTX_DECLARE(max_cpus_lock, &max_cpus_grp);
+static int max_cpus_initialized = 0;
#define MAX_CPUS_SET 0x1
#define MAX_CPUS_WAIT 0x2
/* IO memory map services */
/* Map memory map IO space */
-vm_offset_t ml_io_map(
- vm_offset_t phys_addr,
+vm_offset_t
+ml_io_map(
+ vm_offset_t phys_addr,
vm_size_t size)
{
- return(io_map(phys_addr,size,VM_WIMG_IO));
+ return io_map(phys_addr, size, VM_WIMG_IO);
}
/* boot memory allocation */
-vm_offset_t ml_static_malloc(
- __unused vm_size_t size)
+vm_offset_t
+ml_static_malloc(
+ __unused vm_size_t size)
{
- return((vm_offset_t)NULL);
+ return (vm_offset_t)NULL;
}
-void ml_get_bouncepool_info(vm_offset_t *phys_addr, vm_size_t *size)
+void
+ml_get_bouncepool_info(vm_offset_t *phys_addr, vm_size_t *size)
{
- *phys_addr = 0;
+ *phys_addr = 0;
*size = 0;
}
#else
return (vm_offset_t)((paddr) | LINEAR_KERNEL_ADDRESS);
#endif
-}
+}
+vm_offset_t
+ml_static_slide(
+ vm_offset_t vaddr)
+{
+ return VM_KERNEL_SLIDE(vaddr);
+}
/*
- * Routine: ml_static_mfree
- * Function:
+ * base must be page-aligned, and size must be a multiple of PAGE_SIZE
+ */
+kern_return_t
+ml_static_verify_page_protections(
+ uint64_t base, uint64_t size, vm_prot_t prot)
+{
+ vm_prot_t pageprot;
+ uint64_t offset;
+
+ DBG("ml_static_verify_page_protections: vaddr 0x%llx sz 0x%llx prot 0x%x\n", base, size, prot);
+
+ /*
+ * base must be within the static bounds, defined to be:
+ * (vm_kernel_stext, kc_highest_nonlinkedit_vmaddr)
+ */
+#if DEVELOPMENT || DEBUG || KASAN
+ assert(kc_highest_nonlinkedit_vmaddr > 0 && base > vm_kernel_stext && base < kc_highest_nonlinkedit_vmaddr);
+#else /* On release kernels, assume this is a protection mismatch failure. */
+ if (kc_highest_nonlinkedit_vmaddr == 0 || base < vm_kernel_stext || base >= kc_highest_nonlinkedit_vmaddr) {
+ return KERN_FAILURE;
+ }
+#endif
+
+ for (offset = 0; offset < size; offset += PAGE_SIZE) {
+ if (pmap_get_prot(kernel_pmap, base + offset, &pageprot) == KERN_FAILURE) {
+ return KERN_FAILURE;
+ }
+ if ((pageprot & prot) != prot) {
+ return KERN_FAILURE;
+ }
+ }
+
+ return KERN_SUCCESS;
+}
+
+vm_offset_t
+ml_static_unslide(
+ vm_offset_t vaddr)
+{
+ return VM_KERNEL_UNSLIDE(vaddr);
+}
+
+/*
+ * Reclaim memory, by virtual address, that was used in early boot that is no longer needed
+ * by the kernel.
*/
void
ml_static_mfree(
addr64_t vaddr_cur;
ppnum_t ppn;
uint32_t freed_pages = 0;
+ vm_size_t map_size;
+
assert(vaddr >= VM_MIN_KERNEL_ADDRESS);
- assert((vaddr & (PAGE_SIZE-1)) == 0); /* must be page aligned */
+ assert((vaddr & (PAGE_SIZE - 1)) == 0); /* must be page aligned */
+
+ for (vaddr_cur = vaddr; vaddr_cur < round_page_64(vaddr + size);) {
+ map_size = pmap_query_pagesize(kernel_pmap, vaddr_cur);
+
+ /* just skip if nothing mapped here */
+ if (map_size == 0) {
+ vaddr_cur += PAGE_SIZE;
+ continue;
+ }
+
+ /*
+ * Can't free from the middle of a large page.
+ */
+ assert((vaddr_cur & (map_size - 1)) == 0);
- for (vaddr_cur = vaddr;
- vaddr_cur < round_page_64(vaddr+size);
- vaddr_cur += PAGE_SIZE) {
ppn = pmap_find_phys(kernel_pmap, vaddr_cur);
- if (ppn != (vm_offset_t)NULL) {
- kernel_pmap->stats.resident_count++;
- if (kernel_pmap->stats.resident_count >
- kernel_pmap->stats.resident_max) {
- kernel_pmap->stats.resident_max =
- kernel_pmap->stats.resident_count;
+ assert(ppn != (ppnum_t)NULL);
+
+ pmap_remove(kernel_pmap, vaddr_cur, vaddr_cur + map_size);
+ while (map_size > 0) {
+ if (++kernel_pmap->stats.resident_count > kernel_pmap->stats.resident_max) {
+ kernel_pmap->stats.resident_max = kernel_pmap->stats.resident_count;
}
- pmap_remove(kernel_pmap, vaddr_cur, vaddr_cur+PAGE_SIZE);
- assert(pmap_valid_page(ppn));
+ assert(pmap_valid_page(ppn));
if (IS_MANAGED_PAGE(ppn)) {
- vm_page_create(ppn,(ppn+1));
- vm_page_wire_count--;
+ vm_page_create(ppn, (ppn + 1));
freed_pages++;
}
+ map_size -= PAGE_SIZE;
+ vaddr_cur += PAGE_SIZE;
+ ppn++;
}
}
-#if DEBUG
+ vm_page_lockspin_queues();
+ vm_page_wire_count -= freed_pages;
+ vm_page_wire_count_initial -= freed_pages;
+ if (vm_page_wire_count_on_boot != 0) {
+ assert(vm_page_wire_count_on_boot >= freed_pages);
+ vm_page_wire_count_on_boot -= 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
}
+/* Change page protections for addresses previously loaded by efiboot */
+kern_return_t
+ml_static_protect(vm_offset_t vmaddr, vm_size_t size, vm_prot_t prot)
+{
+ boolean_t NX = !!!(prot & VM_PROT_EXECUTE), ro = !!!(prot & VM_PROT_WRITE);
+
+ assert(prot & VM_PROT_READ);
+
+ pmap_mark_range(kernel_pmap, vmaddr, size, NX, ro);
+
+ return KERN_SUCCESS;
+}
/* virtual to physical on wired pages */
-vm_offset_t ml_vtophys(
+vm_offset_t
+ml_vtophys(
vm_offset_t vaddr)
{
- return (vm_offset_t)kvtophys(vaddr);
+ return (vm_offset_t)kvtophys(vaddr);
}
/*
* the duration of the copy process.
*/
-vm_size_t ml_nofault_copy(
+vm_size_t
+ml_nofault_copy(
vm_offset_t virtsrc, vm_offset_t virtdst, vm_size_t size)
{
addr64_t cur_phys_dst, cur_phys_src;
uint32_t count, nbytes = 0;
while (size > 0) {
- if (!(cur_phys_src = kvtophys(virtsrc)))
+ if (!(cur_phys_src = kvtophys(virtsrc))) {
break;
- if (!(cur_phys_dst = kvtophys(virtdst)))
+ }
+ if (!(cur_phys_dst = kvtophys(virtdst))) {
break;
- if (!pmap_valid_page(i386_btop(cur_phys_dst)) || !pmap_valid_page(i386_btop(cur_phys_src)))
+ }
+ if (!pmap_valid_page(i386_btop(cur_phys_dst)) || !pmap_valid_page(i386_btop(cur_phys_src))) {
break;
+ }
count = (uint32_t)(PAGE_SIZE - (cur_phys_src & PAGE_MASK));
- if (count > (PAGE_SIZE - (cur_phys_dst & PAGE_MASK)))
+ if (count > (PAGE_SIZE - (cur_phys_dst & PAGE_MASK))) {
count = (uint32_t)(PAGE_SIZE - (cur_phys_dst & PAGE_MASK));
- if (count > size)
+ }
+ if (count > size) {
count = (uint32_t)size;
+ }
bcopy_phys(cur_phys_src, cur_phys_dst, count);
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 */
-void ml_init_interrupt(void)
+void
+ml_init_interrupt(void)
{
(void) ml_set_interrupts_enabled(TRUE);
}
/* Get Interrupts Enabled */
-boolean_t ml_get_interrupts_enabled(void)
+boolean_t
+ml_get_interrupts_enabled(void)
{
- unsigned long flags;
+ unsigned long flags;
- __asm__ volatile("pushf; pop %0" : "=r" (flags));
- return (flags & EFL_IF) != 0;
+ __asm__ volatile ("pushf; pop %0": "=r" (flags));
+ return (flags & EFL_IF) != 0;
}
/* Set Interrupts Enabled */
-boolean_t ml_set_interrupts_enabled(boolean_t enable)
+boolean_t
+ml_set_interrupts_enabled(boolean_t enable)
{
unsigned long flags;
boolean_t istate;
-
- __asm__ volatile("pushf; pop %0" : "=r" (flags));
+
+ __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");
+ __asm__ volatile ("sti;nop");
- if ((get_preemption_level() == 0) && (*ast_pending() & AST_URGENT))
- __asm__ volatile ("int $0xff");
- }
- else {
- if (istate)
- __asm__ volatile("cli");
+ if ((get_preemption_level() == 0) && (*ast_pending() & AST_URGENT)) {
+ __asm__ volatile ("int %0" :: "N" (T_PREEMPT));
+ }
+ } else {
+ if (istate) {
+ __asm__ volatile ("cli");
+ }
}
return istate;
}
+/* Early Set Interrupts Enabled */
+boolean_t
+ml_early_set_interrupts_enabled(boolean_t enable)
+{
+ if (enable == TRUE) {
+ kprintf("Caller attempted to enable interrupts too early in "
+ "kernel startup. Halting.\n");
+ hlt();
+ /*NOTREACHED*/
+ }
+
+ /* On x86, do not allow interrupts to be enabled very early */
+ return FALSE;
+}
+
/* Check if running at interrupt context */
-boolean_t ml_at_interrupt_context(void)
+boolean_t
+ml_at_interrupt_context(void)
{
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)
+__dead2
+void
+ml_cause_interrupt(void)
{
panic("ml_cause_interrupt not defined yet on Intel");
}
-void ml_thread_policy(
+/*
+ * 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,
+ __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);
}
}
/* Initialize Interrupts */
-void ml_install_interrupt_handler(
+void
+ml_install_interrupt_handler(
void *nub,
int source,
void *target,
IOInterruptHandler handler,
- void *refCon)
+ void *refCon)
{
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);
+ (IOInterruptHandler) handler, refCon);
(void) ml_set_interrupts_enabled(current_state);
-
- initialize_screen(NULL, kPEAcquireScreen);
}
void
machine_signal_idle(
- processor_t processor)
+ processor_t processor)
{
cpu_interrupt(processor->cpu_id);
}
+__dead2
+void
+machine_signal_idle_deferred(
+ __unused processor_t processor)
+{
+ panic("Unimplemented");
+}
+
+__dead2
+void
+machine_signal_idle_cancel(
+ __unused processor_t processor)
+{
+ panic("Unimplemented");
+}
+
static kern_return_t
register_cpu(
- uint32_t lapic_id,
+ uint32_t lapic_id,
processor_t *processor_out,
boolean_t boot_cpu )
{
- int target_cpu;
- cpu_data_t *this_cpu_datap;
+ int target_cpu;
+ cpu_data_t *this_cpu_datap;
this_cpu_datap = cpu_data_alloc(boot_cpu);
if (this_cpu_datap == NULL) {
}
target_cpu = this_cpu_datap->cpu_number;
assert((boot_cpu && (target_cpu == 0)) ||
- (!boot_cpu && (target_cpu != 0)));
+ (!boot_cpu && (target_cpu != 0)));
lapic_cpu_map(lapic_id, target_cpu);
/* The cpu_id is not known at registration phase. Just do
- * lapic_id for now
+ * lapic_id for now
*/
this_cpu_datap->cpu_phys_number = lapic_id;
this_cpu_datap->cpu_console_buf = console_cpu_alloc(boot_cpu);
- if (this_cpu_datap->cpu_console_buf == NULL)
+ 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 (this_cpu_datap->lcpu.core == NULL)
- goto failed;
-
-#if NCOPY_WINDOWS > 0
- this_cpu_datap->cpu_pmap = pmap_cpu_alloc(boot_cpu);
- if (this_cpu_datap->cpu_pmap == NULL)
- goto failed;
-#endif
-
- this_cpu_datap->cpu_processor = cpu_processor_alloc(boot_cpu);
- if (this_cpu_datap->cpu_processor == NULL)
+ if (this_cpu_datap->lcpu.core == NULL) {
goto failed;
- /*
- * processor_init() deferred to topology start
- * because "slot numbers" a.k.a. logical processor numbers
- * are not yet finalized.
- */
+ }
}
+ /*
+ * processor_init() deferred to topology start
+ * because "slot numbers" a.k.a. logical processor numbers
+ * are not yet finalized.
+ */
*processor_out = this_cpu_datap->cpu_processor;
return KERN_SUCCESS;
failed:
- cpu_processor_free(this_cpu_datap->cpu_processor);
-#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;
}
kern_return_t
ml_processor_register(
- cpu_id_t cpu_id,
- uint32_t lapic_id,
- processor_t *processor_out,
- boolean_t boot_cpu,
+ cpu_id_t cpu_id,
+ uint32_t lapic_id,
+ processor_t *processor_out,
+ boolean_t boot_cpu,
boolean_t start )
{
- static boolean_t done_topo_sort = FALSE;
- static uint32_t num_registered = 0;
+ static boolean_t done_topo_sort = FALSE;
+ static uint32_t num_registered = 0;
- /* Register all CPUs first, and track max */
- if( start == FALSE )
- {
- num_registered++;
+ /* Register all CPUs first, and track max */
+ if (start == FALSE) {
+ num_registered++;
- DBG( "registering CPU lapic id %d\n", lapic_id );
+ DBG( "registering CPU lapic id %d\n", lapic_id );
- return register_cpu( lapic_id, processor_out, boot_cpu );
- }
+ return register_cpu( lapic_id, processor_out, boot_cpu );
+ }
- /* Sort by topology before we start anything */
- if( !done_topo_sort )
- {
- DBG( "about to start CPUs. %d registered\n", num_registered );
+ /* Sort by topology before we start anything */
+ if (!done_topo_sort) {
+ DBG( "about to start CPUs. %d registered\n", num_registered );
+
+ cpu_topology_sort( num_registered );
+ done_topo_sort = TRUE;
+ }
- cpu_topology_sort( num_registered );
- done_topo_sort = TRUE;
- }
+ /* Assign the cpu ID */
+ uint32_t cpunum = -1;
+ cpu_data_t *this_cpu_datap = NULL;
- /* Assign the cpu ID */
- uint32_t cpunum = -1;
- cpu_data_t *this_cpu_datap = NULL;
+ /* find cpu num and pointer */
+ cpunum = ml_get_cpuid( lapic_id );
- /* find cpu num and pointer */
- cpunum = ml_get_cpuid( lapic_id );
+ if (cpunum == 0xFFFFFFFF) { /* never heard of it? */
+ panic( "trying to start invalid/unregistered CPU %d\n", lapic_id );
+ }
- if( cpunum == 0xFFFFFFFF ) /* never heard of it? */
- panic( "trying to start invalid/unregistered CPU %d\n", lapic_id );
+ this_cpu_datap = cpu_datap(cpunum);
- this_cpu_datap = cpu_datap(cpunum);
+ /* fix the CPU id */
+ this_cpu_datap->cpu_id = cpu_id;
- /* 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);
+ random_cpu_init(cpunum);
+ }
- /* output arg */
- *processor_out = this_cpu_datap->cpu_processor;
+ /* output arg */
+ *processor_out = this_cpu_datap->cpu_processor;
- /* OK, try and start this CPU */
- return cpu_topology_start_cpu( cpunum );
+ /* OK, try and start this CPU */
+ return cpu_topology_start_cpu( cpunum );
}
void
ml_cpu_get_info(ml_cpu_info_t *cpu_infop)
{
- boolean_t os_supports_sse;
+ boolean_t os_supports_sse;
i386_cpu_info_t *cpuid_infop;
- if (cpu_infop == NULL)
+ if (cpu_infop == NULL) {
return;
-
+ }
+
/*
* Are we supporting MMX/SSE/SSE2/SSE3?
* As distinct from whether the cpu has these capabilities.
*/
os_supports_sse = !!(get_cr4() & CR4_OSXMM);
- if (ml_fpu_avx_enabled())
+ if (ml_fpu_avx_enabled()) {
cpu_infop->vector_unit = 9;
- else if ((cpuid_features() & CPUID_FEATURE_SSE4_2) && os_supports_sse)
+ } else if ((cpuid_features() & CPUID_FEATURE_SSE4_2) && os_supports_sse) {
cpu_infop->vector_unit = 8;
- else if ((cpuid_features() & CPUID_FEATURE_SSE4_1) && os_supports_sse)
+ } else if ((cpuid_features() & CPUID_FEATURE_SSE4_1) && os_supports_sse) {
cpu_infop->vector_unit = 7;
- else if ((cpuid_features() & CPUID_FEATURE_SSSE3) && os_supports_sse)
+ } else if ((cpuid_features() & CPUID_FEATURE_SSSE3) && os_supports_sse) {
cpu_infop->vector_unit = 6;
- else if ((cpuid_features() & CPUID_FEATURE_SSE3) && os_supports_sse)
+ } else if ((cpuid_features() & CPUID_FEATURE_SSE3) && os_supports_sse) {
cpu_infop->vector_unit = 5;
- else if ((cpuid_features() & CPUID_FEATURE_SSE2) && os_supports_sse)
+ } else if ((cpuid_features() & CPUID_FEATURE_SSE2) && os_supports_sse) {
cpu_infop->vector_unit = 4;
- else if ((cpuid_features() & CPUID_FEATURE_SSE) && os_supports_sse)
+ } else if ((cpuid_features() & CPUID_FEATURE_SSE) && os_supports_sse) {
cpu_infop->vector_unit = 3;
- else if (cpuid_features() & CPUID_FEATURE_MMX)
+ } else if (cpuid_features() & CPUID_FEATURE_MMX) {
cpu_infop->vector_unit = 2;
- else
+ } else {
cpu_infop->vector_unit = 0;
+ }
cpuid_infop = cpuid_info();
- cpu_infop->cache_line_size = cpuid_infop->cache_linesize;
+ cpu_infop->cache_line_size = cpuid_infop->cache_linesize;
cpu_infop->l1_icache_size = cpuid_infop->cache_size[L1I];
cpu_infop->l1_dcache_size = cpuid_infop->cache_size[L1D];
-
- if (cpuid_infop->cache_size[L2U] > 0) {
- cpu_infop->l2_settings = 1;
- cpu_infop->l2_cache_size = cpuid_infop->cache_size[L2U];
- } else {
- cpu_infop->l2_settings = 0;
- cpu_infop->l2_cache_size = 0xFFFFFFFF;
- }
- if (cpuid_infop->cache_size[L3U] > 0) {
- cpu_infop->l3_settings = 1;
- cpu_infop->l3_cache_size = cpuid_infop->cache_size[L3U];
- } else {
- cpu_infop->l3_settings = 0;
- cpu_infop->l3_cache_size = 0xFFFFFFFF;
- }
+ if (cpuid_infop->cache_size[L2U] > 0) {
+ cpu_infop->l2_settings = 1;
+ cpu_infop->l2_cache_size = cpuid_infop->cache_size[L2U];
+ } else {
+ cpu_infop->l2_settings = 0;
+ cpu_infop->l2_cache_size = 0xFFFFFFFF;
+ }
+
+ if (cpuid_infop->cache_size[L3U] > 0) {
+ cpu_infop->l3_settings = 1;
+ cpu_infop->l3_cache_size = cpuid_infop->cache_size[L3U];
+ } else {
+ cpu_infop->l3_settings = 0;
+ cpu_infop->l3_cache_size = 0xFFFFFFFF;
+ }
}
-void
-ml_init_max_cpus(unsigned long max_cpus)
+int
+ml_early_cpu_max_number(void)
{
- boolean_t current_state;
+ int n = max_ncpus;
- current_state = ml_set_interrupts_enabled(FALSE);
- if (max_cpus_initialized != MAX_CPUS_SET) {
- if (max_cpus > 0 && max_cpus <= MAX_CPUS) {
+ assert(startup_phase >= STARTUP_SUB_TUNABLES);
+ if (max_cpus_from_firmware) {
+ n = MIN(n, max_cpus_from_firmware);
+ }
+ return n - 1;
+}
+
+void
+ml_set_max_cpus(unsigned int max_cpus)
+{
+ lck_mtx_lock(&max_cpus_lock);
+ if (max_cpus_initialized != MAX_CPUS_SET) {
+ if (max_cpus > 0 && max_cpus <= MAX_CPUS) {
/*
* Note: max_cpus is the number of enabled processors
* that ACPI found; max_ncpus is the maximum number
* that the kernel supports or that the "cpus="
* boot-arg has set. Here we take int minimum.
*/
- machine_info.max_cpus = (integer_t)MIN(max_cpus, max_ncpus);
+ machine_info.max_cpus = (integer_t)MIN(max_cpus, max_ncpus);
}
- if (max_cpus_initialized == MAX_CPUS_WAIT)
- wakeup((event_t)&max_cpus_initialized);
- max_cpus_initialized = MAX_CPUS_SET;
- }
- (void) ml_set_interrupts_enabled(current_state);
+ if (max_cpus_initialized == MAX_CPUS_WAIT) {
+ thread_wakeup((event_t) &max_cpus_initialized);
+ }
+ max_cpus_initialized = MAX_CPUS_SET;
+ }
+ lck_mtx_unlock(&max_cpus_lock);
}
-int
-ml_get_max_cpus(void)
+unsigned int
+ml_wait_max_cpus(void)
+{
+ lck_mtx_lock(&max_cpus_lock);
+ while (max_cpus_initialized != MAX_CPUS_SET) {
+ max_cpus_initialized = MAX_CPUS_WAIT;
+ lck_mtx_sleep(&max_cpus_lock, LCK_SLEEP_DEFAULT, &max_cpus_initialized, THREAD_UNINT);
+ }
+ lck_mtx_unlock(&max_cpus_lock);
+ return machine_info.max_cpus;
+}
+
+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;
+}
+
+static uint64_t
+virtual_timeout_inflate64(unsigned int vti, uint64_t timeout, uint64_t max_timeout)
+{
+ if (vti >= 64) {
+ return max_timeout;
+ }
+
+ if ((timeout << vti) >> vti != timeout) {
+ return max_timeout;
+ }
+
+ if ((timeout << vti) > max_timeout) {
+ return max_timeout;
+ }
+
+ return timeout << vti;
+}
+
+static uint32_t
+virtual_timeout_inflate32(unsigned int vti, uint32_t timeout, uint32_t max_timeout)
{
- boolean_t current_state;
+ if (vti >= 32) {
+ return max_timeout;
+ }
- current_state = ml_set_interrupts_enabled(FALSE);
- if (max_cpus_initialized != MAX_CPUS_SET) {
- max_cpus_initialized = MAX_CPUS_WAIT;
- assert_wait((event_t)&max_cpus_initialized, THREAD_UNINT);
- (void)thread_block(THREAD_CONTINUE_NULL);
- }
- (void) ml_set_interrupts_enabled(current_state);
- return(machine_info.max_cpus);
+ if ((timeout << vti) >> vti != timeout) {
+ return max_timeout;
+ }
+
+ return timeout << vti;
+}
+
+/*
+ * Some timeouts are later adjusted or used in calculations setting
+ * other values. In order to avoid overflow, cap the max timeout as
+ * 2^47ns (~39 hours).
+ */
+static const uint64_t max_timeout_ns = 1ULL << 47;
+
+/*
+ * Inflate a timeout in absolutetime.
+ */
+static uint64_t
+virtual_timeout_inflate_abs(unsigned int vti, uint64_t timeout)
+{
+ uint64_t max_timeout;
+ nanoseconds_to_absolutetime(max_timeout_ns, &max_timeout);
+ return virtual_timeout_inflate64(vti, timeout, max_timeout);
+}
+
+/*
+ * Inflate a value in TSC ticks.
+ */
+static uint64_t
+virtual_timeout_inflate_tsc(unsigned int vti, uint64_t timeout)
+{
+ const uint64_t max_timeout = tmrCvt(max_timeout_ns, tscFCvtn2t);
+ return virtual_timeout_inflate64(vti, timeout, max_timeout);
+}
+
+/*
+ * Inflate a timeout in microseconds.
+ */
+static uint32_t
+virtual_timeout_inflate_us(unsigned int vti, uint64_t timeout)
+{
+ const uint32_t max_timeout = ~0;
+ return virtual_timeout_inflate32(vti, timeout, max_timeout);
+}
+
+uint64_t
+ml_get_timebase_entropy(void)
+{
+ return __builtin_ia32_rdtsc();
}
/*
void
ml_init_lock_timeout(void)
{
- uint64_t abstime;
- uint32_t mtxspin;
- uint64_t default_timeout_ns = NSEC_PER_SEC>>2;
- uint32_t slto;
- uint32_t prt;
+ 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)))
+ 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);
- if (PE_parse_boot_argn("mtxspin", &mtxspin, sizeof (mtxspin))) {
- if (mtxspin > USEC_PER_SEC>>4)
- mtxspin = USEC_PER_SEC>>4;
- nanoseconds_to_absolutetime(mtxspin*NSEC_PER_USEC, &abstime);
+ /*
+ * 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 {
- nanoseconds_to_absolutetime(10*NSEC_PER_USEC, &abstime);
+ 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("phywritemaxus", &slto, sizeof(slto))) {
+ nanoseconds_to_absolutetime((uint64_t)slto * NSEC_PER_USEC, &abstime);
+ reportphywritedelayabs = abstime;
+ }
+
+ if (PE_parse_boot_argn("tracephyreadus", &slto, sizeof(slto))) {
+ nanoseconds_to_absolutetime((uint64_t)slto * NSEC_PER_USEC, &abstime);
+ tracephyreaddelayabs = abstime;
+ }
+
+ if (PE_parse_boot_argn("tracephywriteus", &slto, sizeof(slto))) {
+ nanoseconds_to_absolutetime((uint64_t)slto * NSEC_PER_USEC, &abstime);
+ tracephywritedelayabs = abstime;
+ }
+
+ if (PE_parse_boot_argn("mtxspin", &mtxspin, sizeof(mtxspin))) {
+ if (mtxspin > USEC_PER_SEC >> 4) {
+ mtxspin = USEC_PER_SEC >> 4;
+ }
+ nanoseconds_to_absolutetime(mtxspin * NSEC_PER_USEC, &abstime);
+ } else {
+ nanoseconds_to_absolutetime(10 * NSEC_PER_USEC, &abstime);
}
MutexSpin = (unsigned int)abstime;
+ low_MutexSpin = MutexSpin;
+ /*
+ * high_MutexSpin should be initialized as low_MutexSpin * real_ncpus, but
+ * real_ncpus is not set at this time
+ */
+ high_MutexSpin = -1;
nanoseconds_to_absolutetime(4ULL * NSEC_PER_SEC, &LastDebuggerEntryAllowance);
- if (PE_parse_boot_argn("panic_restart_timeout", &prt, sizeof (prt)))
+ 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) {
+ unsigned 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_INFLATE_ABS(_timeout) \
+MACRO_BEGIN \
+ kprintf("%24s: 0x%016llx ", #_timeout, _timeout); \
+ _timeout = virtual_timeout_inflate_abs(vti, _timeout); \
+ kprintf("-> 0x%016llx\n", _timeout); \
+MACRO_END
+
+#define VIRTUAL_TIMEOUT_INFLATE_TSC(_timeout) \
+MACRO_BEGIN \
+ kprintf("%24s: 0x%016llx ", #_timeout, _timeout); \
+ _timeout = virtual_timeout_inflate_tsc(vti, _timeout); \
+ kprintf("-> 0x%016llx\n", _timeout); \
+MACRO_END
+#define VIRTUAL_TIMEOUT_INFLATE_US(_timeout) \
+MACRO_BEGIN \
+ kprintf("%24s: 0x%08x ", #_timeout, _timeout); \
+ _timeout = virtual_timeout_inflate_us(vti, _timeout); \
+ kprintf("-> 0x%08x\n", _timeout); \
+MACRO_END
+ VIRTUAL_TIMEOUT_INFLATE_US(LockTimeOutUsec);
+ VIRTUAL_TIMEOUT_INFLATE_ABS(LockTimeOut);
+ VIRTUAL_TIMEOUT_INFLATE_TSC(LockTimeOutTSC);
+ VIRTUAL_TIMEOUT_INFLATE_ABS(TLBTimeOut);
+ VIRTUAL_TIMEOUT_INFLATE_ABS(MutexSpin);
+ VIRTUAL_TIMEOUT_INFLATE_ABS(low_MutexSpin);
+ VIRTUAL_TIMEOUT_INFLATE_ABS(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(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
return (interval < delay_spin_threshold) ? TRUE : FALSE;
}
+TUNABLE(uint32_t, yield_delay_us, "yield_delay_us", 0);
+
+void
+ml_delay_on_yield(void)
+{
+#if DEVELOPMENT || DEBUG
+ if (yield_delay_us) {
+ delay(yield_delay_us);
+ }
+#endif
+}
+
/*
- * 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;
}
* The following are required for parts of the kernel
* that cannot resolve these functions as inlines:
*/
-extern thread_t current_act(void);
+extern thread_t current_act(void) __attribute__((const));
thread_t
current_act(void)
{
- return(current_thread_fast());
+ return current_thread_fast();
}
#undef current_thread
-extern thread_t current_thread(void);
+extern thread_t current_thread(void) __attribute__((const));
thread_t
current_thread(void)
{
- return(current_thread_fast());
+ return current_thread_fast();
}
-boolean_t ml_is64bit(void) {
-
- return (cpu_mode_is64bit());
+boolean_t
+ml_is64bit(void)
+{
+ return cpu_mode_is64bit();
}
-boolean_t ml_thread_is64bit(thread_t thread) {
-
- return (thread_is_64bit(thread));
+boolean_t
+ml_thread_is64bit(thread_t thread)
+{
+ return thread_is_64bit_addr(thread);
}
-boolean_t ml_state_is64bit(void *saved_state) {
-
+boolean_t
+ml_state_is64bit(void *saved_state)
+{
return is_saved_state64(saved_state);
}
-void ml_cpu_set_ldt(int selector)
+void
+ml_cpu_set_ldt(int selector)
{
/*
* Avoid loading the LDT
* if we're setting the KERNEL LDT and it's already set.
*/
if (selector == KERNEL_LDT &&
- current_cpu_datap()->cpu_ldt == KERNEL_LDT)
+ 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;
}
-void ml_fp_setvalid(boolean_t value)
+void
+ml_fp_setvalid(boolean_t value)
{
- fp_setvalid(value);
+ fp_setvalid(value);
}
-uint64_t ml_cpu_int_event_time(void)
+uint64_t
+ml_cpu_int_event_time(void)
{
return current_cpu_datap()->cpu_int_event_time;
}
-vm_offset_t ml_stack_remaining(void)
+vm_offset_t
+ml_stack_remaining(void)
{
uintptr_t local = (uintptr_t) &local;
if (ml_at_interrupt_context() != 0) {
- return (local - (current_cpu_datap()->cpu_int_stack_top - INTSTACK_SIZE));
+ return local - (current_cpu_datap()->cpu_int_stack_top - INTSTACK_SIZE);
} else {
- return (local - current_thread()->kernel_stack);
+ return local - current_thread()->kernel_stack;
}
}
+#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 intr;
+ boolean_t intr;
unsigned long flags;
assert(get_preemption_level() == 0);
- __asm__ volatile("pushf; pop %0" : "=r" (flags));
-
- intr = ((flags & EFL_IF) != 0);
-
- if ((*ast_pending() & AST_URGENT) && intr == TRUE) {
+ if (__improbable(*ast_pending() & AST_URGENT)) {
/*
- * can handle interrupts and preemptions
+ * can handle interrupts and preemptions
* at this point
*/
+ __asm__ volatile ("pushf; pop %0" : "=r" (flags));
+
+ intr = ((flags & EFL_IF) != 0);
/*
* now cause the PRE-EMPTION trap
*/
- __asm__ volatile ("int %0" :: "N" (T_PREEMPT));
+ if (intr == TRUE) {
+ __asm__ volatile ("int %0" :: "N" (T_PREEMPT));
+ }
}
}
-boolean_t machine_timeout_suspended(void) {
- return (virtualized || pmap_tlb_flush_timeout || spinlock_timed_out || panic_active() || mp_recent_debugger_activity());
+boolean_t
+machine_timeout_suspended(void)
+{
+ 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, LCK_GRP_NULL);
+ 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;
+}
+
+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)
+{
+ ml_quiescing = quiescing;
+}
+
+boolean_t
+ml_is_quiescing(void)
+{
+ return ml_quiescing;
+}
+
+uint64_t
+ml_get_booter_memory_size(void)
+{
+ return 0;
+}
+
+void
+machine_lockdown(void)
+{
+ x86_64_protect_data_const();
+}
+
+bool
+ml_cpu_can_exit(__unused int cpu_id)
+{
+ return true;
+}
+
+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)
+{
+}
+
+size_t
+ml_get_vm_reserved_regions(bool vm_is64bit, struct vm_reserved_region **regions)
+{
+#pragma unused(vm_is64bit)
+ assert(regions != NULL);
+
+ *regions = NULL;
+ return 0;
}
projects / apple / xnu.git / blobdiff