/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* @OSF_COPYRIGHT@
*/
-#include <cpus.h>
#include <mach_rt.h>
#include <mach_kdb.h>
#include <mach_kdp.h>
#include <mach_ldebug.h>
+#include <gprof.h>
+
+#include <mach/mach_types.h>
+#include <mach/kern_return.h>
+
+#include <kern/kern_types.h>
+#include <kern/startup.h>
+#include <kern/processor.h>
+#include <kern/cpu_number.h>
+#include <kern/cpu_data.h>
+#include <kern/assert.h>
+#include <kern/machine.h>
+
+#include <vm/vm_map.h>
+#include <vm/vm_kern.h>
+
+#include <profiling/profile-mk.h>
#include <i386/mp.h>
#include <i386/mp_events.h>
#include <i386/proc_reg.h>
#include <i386/machine_cpu.h>
#include <i386/misc_protos.h>
-#include <vm/vm_kern.h>
-#include <mach/mach_types.h>
-#include <mach/kern_return.h>
-#include <kern/startup.h>
-#include <kern/processor.h>
-#include <kern/cpu_number.h>
-#include <kern/cpu_data.h>
-#include <kern/assert.h>
+#include <i386/mtrr.h>
+#include <i386/postcode.h>
+#include <i386/perfmon.h>
+#include <i386/cpu_threads.h>
+#include <i386/mp_desc.h>
#if MP_DEBUG
#define PAUSE delay(1000000)
#define PAUSE
#endif /* MP_DEBUG */
+/*
+ * By default, use high vectors to leave vector space for systems
+ * with multiple I/O APIC's. However some systems that boot with
+ * local APIC disabled will hang in SMM when vectors greater than
+ * 0x5F are used. Those systems are not expected to have I/O APIC
+ * so 16 (0x50 - 0x40) vectors for legacy PIC support is perfect.
+ */
+#define LAPIC_DEFAULT_INTERRUPT_BASE 0xD0
+#define LAPIC_REDUCED_INTERRUPT_BASE 0x50
+/*
+ * Specific lapic interrupts are relative to this base:
+ */
+#define LAPIC_PERFCNT_INTERRUPT 0xB
+#define LAPIC_TIMER_INTERRUPT 0xC
+#define LAPIC_SPURIOUS_INTERRUPT 0xD
+#define LAPIC_INTERPROCESSOR_INTERRUPT 0xE
+#define LAPIC_ERROR_INTERRUPT 0xF
+
/* Initialize lapic_id so cpu_number() works on non SMP systems */
unsigned long lapic_id_initdata = 0;
unsigned long lapic_id = (unsigned long)&lapic_id_initdata;
-vm_offset_t lapic_start;
+vm_offset_t lapic_start;
+
+static i386_intr_func_t lapic_timer_func;
+static i386_intr_func_t lapic_pmi_func;
+
+/* TRUE if local APIC was enabled by the OS not by the BIOS */
+static boolean_t lapic_os_enabled = FALSE;
+
+/* Base vector for local APIC interrupt sources */
+int lapic_interrupt_base = LAPIC_DEFAULT_INTERRUPT_BASE;
-void lapic_init(void);
void slave_boot_init(void);
static void mp_kdp_wait(void);
boolean_t smp_initialized = FALSE;
decl_simple_lock_data(,mp_kdp_lock);
-decl_simple_lock_data(,mp_putc_lock);
+
+decl_mutex_data(static, mp_cpu_boot_lock);
/* Variables needed for MP rendezvous. */
static void (*mp_rv_setup_func)(void *arg);
static void (*mp_rv_teardown_func)(void *arg);
static void *mp_rv_func_arg;
static int mp_rv_ncpus;
-static volatile long mp_rv_waiters[2];
+static long mp_rv_waiters[2];
decl_simple_lock_data(,mp_rv_lock);
-int lapic_to_cpu[LAPIC_ID_MAX+1];
-int cpu_to_lapic[NCPUS];
+int lapic_to_cpu[MAX_CPUS];
+int cpu_to_lapic[MAX_CPUS];
static void
lapic_cpu_map_init(void)
{
int i;
- for (i = 0; i < NCPUS; i++)
- cpu_to_lapic[i] = -1;
- for (i = 0; i <= LAPIC_ID_MAX; i++)
+ for (i = 0; i < MAX_CPUS; i++) {
lapic_to_cpu[i] = -1;
+ cpu_to_lapic[i] = -1;
+ }
}
void
-lapic_cpu_map(int apic_id, int cpu_number)
+lapic_cpu_map(int apic_id, int cpu)
{
- cpu_to_lapic[cpu_number] = apic_id;
- lapic_to_cpu[apic_id] = cpu_number;
+ cpu_to_lapic[cpu] = apic_id;
+ lapic_to_cpu[apic_id] = cpu;
}
#ifdef MP_DEBUG
{
int i;
- for (i = 0; i < NCPUS; i++) {
+ for (i = 0; i < MAX_CPUS; i++) {
if (cpu_to_lapic[i] == -1)
continue;
kprintf("cpu_to_lapic[%d]: %d\n",
i, cpu_to_lapic[i]);
}
- for (i = 0; i <= LAPIC_ID_MAX; i++) {
+ for (i = 0; i < MAX_CPUS; i++) {
if (lapic_to_cpu[i] == -1)
continue;
kprintf("lapic_to_cpu[%d]: %d\n",
i, lapic_to_cpu[i]);
}
}
+#define LAPIC_CPU_MAP_DUMP() lapic_cpu_map_dump()
+#define LAPIC_DUMP() lapic_dump()
+#else
+#define LAPIC_CPU_MAP_DUMP()
+#define LAPIC_DUMP()
#endif /* MP_DEBUG */
#define LAPIC_REG(reg) \
#define LAPIC_REG_OFFSET(reg,off) \
(*((volatile int *)(lapic_start + LAPIC_##reg + (off))))
+#define LAPIC_VECTOR(src) \
+ (lapic_interrupt_base + LAPIC_##src##_INTERRUPT)
+
+#define LAPIC_ISR_IS_SET(base,src) \
+ (LAPIC_REG_OFFSET(ISR_BASE,((base+LAPIC_##src##_INTERRUPT)/32)*0x10) & \
+ (1 <<((base + LAPIC_##src##_INTERRUPT)%32)))
+
+#if GPROF
+/*
+ * Initialize dummy structs for profiling. These aren't used but
+ * allows hertz_tick() to be built with GPROF defined.
+ */
+struct profile_vars _profile_vars;
+struct profile_vars *_profile_vars_cpus[MAX_CPUS] = { &_profile_vars };
+#define GPROF_INIT() \
+{ \
+ int i; \
+ \
+ /* Hack to initialize pointers to unused profiling structs */ \
+ for (i = 1; i < MAX_CPUS; i++) \
+ _profile_vars_cpus[i] = &_profile_vars; \
+}
+#else
+#define GPROF_INIT()
+#endif /* GPROF */
+
+extern void master_up(void);
void
smp_init(void)
-
{
int result;
vm_map_entry_t entry;
uint32_t hi;
boolean_t is_boot_processor;
boolean_t is_lapic_enabled;
+ vm_offset_t lapic_base;
+
+ simple_lock_init(&mp_kdp_lock, 0);
+ simple_lock_init(&mp_rv_lock, 0);
+ mutex_init(&mp_cpu_boot_lock, 0);
+ console_init();
/* Local APIC? */
- if ((cpuid_features() & CPUID_FEATURE_APIC) == 0)
+ if (!lapic_probe())
return;
- simple_lock_init(&mp_kdp_lock, ETAP_MISC_PRINTF);
- simple_lock_init(&mp_rv_lock, ETAP_MISC_PRINTF);
- simple_lock_init(&mp_putc_lock, ETAP_MISC_PRINTF);
-
/* Examine the local APIC state */
rdmsr(MSR_IA32_APIC_BASE, lo, hi);
is_boot_processor = (lo & MSR_IA32_APIC_BASE_BSP) != 0;
is_lapic_enabled = (lo & MSR_IA32_APIC_BASE_ENABLE) != 0;
- DBG("MSR_IA32_APIC_BASE 0x%x:0x%x %s %s\n", hi, lo,
+ lapic_base = (lo & MSR_IA32_APIC_BASE_BASE);
+ kprintf("MSR_IA32_APIC_BASE 0x%x %s %s\n", lapic_base,
is_lapic_enabled ? "enabled" : "disabled",
is_boot_processor ? "BSP" : "AP");
- assert(is_boot_processor);
- assert(is_lapic_enabled);
+ if (!is_boot_processor || !is_lapic_enabled)
+ panic("Unexpected local APIC state\n");
/* Establish a map to the local apic */
lapic_start = vm_map_min(kernel_map);
result = vm_map_find_space(kernel_map, &lapic_start,
round_page(LAPIC_SIZE), 0, &entry);
if (result != KERN_SUCCESS) {
- printf("smp_init: vm_map_find_entry FAILED (err=%d). "
- "Only supporting ONE cpu.\n", result);
- return;
+ panic("smp_init: vm_map_find_entry FAILED (err=%d)", result);
}
vm_map_unlock(kernel_map);
pmap_enter(pmap_kernel(),
lapic_start,
- (ppnum_t) i386_btop(i386_trunc_page(LAPIC_START)),
+ (ppnum_t) i386_btop(lapic_base),
VM_PROT_READ|VM_PROT_WRITE,
VM_WIMG_USE_DEFAULT,
TRUE);
lapic_id = (unsigned long)(lapic_start + LAPIC_ID);
+ if ((LAPIC_REG(VERSION)&LAPIC_VERSION_MASK) != 0x14) {
+ printf("Local APIC version not 0x14 as expected\n");
+ }
+
/* Set up the lapic_id <-> cpu_number map and add this boot processor */
lapic_cpu_map_init();
lapic_cpu_map((LAPIC_REG(ID)>>LAPIC_ID_SHIFT)&LAPIC_ID_MASK, 0);
lapic_init();
+ cpu_thread_init();
+
+ if (pmc_init() != KERN_SUCCESS)
+ printf("Performance counters not available\n");
+
+ GPROF_INIT();
+ DBGLOG_CPU_INIT(master_cpu);
+
slave_boot_init();
master_up();
}
-int
+static int
lapic_esr_read(void)
{
/* write-read register */
return LAPIC_REG(ERROR_STATUS);
}
-void
+static void
lapic_esr_clear(void)
{
LAPIC_REG(ERROR_STATUS) = 0;
LAPIC_REG(ERROR_STATUS) = 0;
}
-static char *DM[8] = {
+static const char *DM[8] = {
"Fixed",
"Lowest Priority",
"Invalid",
lapic_dump(void)
{
int i;
- char buf[128];
#define BOOL(a) ((a)?' ':'!')
(LAPIC_REG(LVT_TIMER)&LAPIC_LVT_DS_PENDING)?"SendPending":"Idle",
BOOL(LAPIC_REG(LVT_TIMER)&LAPIC_LVT_MASKED),
(LAPIC_REG(LVT_TIMER)&LAPIC_LVT_PERIODIC)?"Periodic":"OneShot");
- kprintf("LVT_PERFCNT: Vector 0x%02x [%s][%s][%s] %s %cmasked\n",
+ kprintf(" Initial Count: 0x%08x \n", LAPIC_REG(TIMER_INITIAL_COUNT));
+ kprintf(" Current Count: 0x%08x \n", LAPIC_REG(TIMER_CURRENT_COUNT));
+ kprintf(" Divide Config: 0x%08x \n", LAPIC_REG(TIMER_DIVIDE_CONFIG));
+ kprintf("LVT_PERFCNT: Vector 0x%02x [%s] %s %cmasked\n",
LAPIC_REG(LVT_PERFCNT)&LAPIC_LVT_VECTOR_MASK,
DM[(LAPIC_REG(LVT_PERFCNT)>>LAPIC_LVT_DM_SHIFT)&LAPIC_LVT_DM_MASK],
- (LAPIC_REG(LVT_PERFCNT)&LAPIC_LVT_TM_LEVEL)?"Level":"Edge ",
- (LAPIC_REG(LVT_PERFCNT)&LAPIC_LVT_IP_PLRITY_LOW)?"Low ":"High",
(LAPIC_REG(LVT_PERFCNT)&LAPIC_LVT_DS_PENDING)?"SendPending":"Idle",
BOOL(LAPIC_REG(LVT_PERFCNT)&LAPIC_LVT_MASKED));
kprintf("LVT_LINT0: Vector 0x%02x [%s][%s][%s] %s %cmasked\n",
kprintf("\n");
}
+boolean_t
+lapic_probe(void)
+{
+ uint32_t lo;
+ uint32_t hi;
+
+ if (cpuid_features() & CPUID_FEATURE_APIC)
+ return TRUE;
+
+ if (cpuid_family() == 6 || cpuid_family() == 15) {
+ /*
+ * Mobile Pentiums:
+ * There may be a local APIC which wasn't enabled by BIOS.
+ * So we try to enable it explicitly.
+ */
+ rdmsr(MSR_IA32_APIC_BASE, lo, hi);
+ lo &= ~MSR_IA32_APIC_BASE_BASE;
+ lo |= MSR_IA32_APIC_BASE_ENABLE | LAPIC_START;
+ lo |= MSR_IA32_APIC_BASE_ENABLE;
+ wrmsr(MSR_IA32_APIC_BASE, lo, hi);
+
+ /*
+ * Re-initialize cpu features info and re-check.
+ */
+ set_cpu_model();
+ if (cpuid_features() & CPUID_FEATURE_APIC) {
+ printf("Local APIC discovered and enabled\n");
+ lapic_os_enabled = TRUE;
+ lapic_interrupt_base = LAPIC_REDUCED_INTERRUPT_BASE;
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
void
-lapic_init(void)
+lapic_shutdown(void)
{
- int value;
+ uint32_t lo;
+ uint32_t hi;
+ uint32_t value;
+
+ /* Shutdown if local APIC was enabled by OS */
+ if (lapic_os_enabled == FALSE)
+ return;
mp_disable_preemption();
+ /* ExtINT: masked */
+ if (get_cpu_number() == master_cpu) {
+ value = LAPIC_REG(LVT_LINT0);
+ value |= LAPIC_LVT_MASKED;
+ LAPIC_REG(LVT_LINT0) = value;
+ }
+
+ /* Timer: masked */
+ LAPIC_REG(LVT_TIMER) |= LAPIC_LVT_MASKED;
+
+ /* Perfmon: masked */
+ LAPIC_REG(LVT_PERFCNT) |= LAPIC_LVT_MASKED;
+
+ /* Error: masked */
+ LAPIC_REG(LVT_ERROR) |= LAPIC_LVT_MASKED;
+
+ /* APIC software disabled */
+ LAPIC_REG(SVR) &= ~LAPIC_SVR_ENABLE;
+
+ /* Bypass the APIC completely and update cpu features */
+ rdmsr(MSR_IA32_APIC_BASE, lo, hi);
+ lo &= ~MSR_IA32_APIC_BASE_ENABLE;
+ wrmsr(MSR_IA32_APIC_BASE, lo, hi);
+ set_cpu_model();
+
+ mp_enable_preemption();
+}
+
+void
+lapic_init(void)
+{
+ int value;
+
/* Set flat delivery model, logical processor id */
LAPIC_REG(DFR) = LAPIC_DFR_FLAT;
LAPIC_REG(LDR) = (get_cpu_number()) << LAPIC_LDR_SHIFT;
/* Accept all */
LAPIC_REG(TPR) = 0;
- LAPIC_REG(SVR) = SPURIOUS_INTERRUPT | LAPIC_SVR_ENABLE;
+ LAPIC_REG(SVR) = LAPIC_VECTOR(SPURIOUS) | LAPIC_SVR_ENABLE;
/* ExtINT */
if (get_cpu_number() == master_cpu) {
value = LAPIC_REG(LVT_LINT0);
+ value &= ~LAPIC_LVT_MASKED;
value |= LAPIC_LVT_DM_EXTINT;
LAPIC_REG(LVT_LINT0) = value;
}
+ /* Timer: unmasked, one-shot */
+ LAPIC_REG(LVT_TIMER) = LAPIC_VECTOR(TIMER);
+
+ /* Perfmon: unmasked */
+ LAPIC_REG(LVT_PERFCNT) = LAPIC_VECTOR(PERFCNT);
+
lapic_esr_clear();
- LAPIC_REG(LVT_ERROR) = APIC_ERROR_INTERRUPT;
+ LAPIC_REG(LVT_ERROR) = LAPIC_VECTOR(ERROR);
- mp_enable_preemption();
}
+void
+lapic_set_timer_func(i386_intr_func_t func)
+{
+ lapic_timer_func = func;
+}
void
-lapic_end_of_interrupt(void)
+lapic_set_timer(
+ boolean_t interrupt,
+ lapic_timer_mode_t mode,
+ lapic_timer_divide_t divisor,
+ lapic_timer_count_t initial_count)
+{
+ boolean_t state;
+ uint32_t timer_vector;
+
+ state = ml_set_interrupts_enabled(FALSE);
+ timer_vector = LAPIC_REG(LVT_TIMER);
+ timer_vector &= ~(LAPIC_LVT_MASKED|LAPIC_LVT_PERIODIC);;
+ timer_vector |= interrupt ? 0 : LAPIC_LVT_MASKED;
+ timer_vector |= (mode == periodic) ? LAPIC_LVT_PERIODIC : 0;
+ LAPIC_REG(LVT_TIMER) = timer_vector;
+ LAPIC_REG(TIMER_DIVIDE_CONFIG) = divisor;
+ LAPIC_REG(TIMER_INITIAL_COUNT) = initial_count;
+ ml_set_interrupts_enabled(state);
+}
+
+void
+lapic_get_timer(
+ lapic_timer_mode_t *mode,
+ lapic_timer_divide_t *divisor,
+ lapic_timer_count_t *initial_count,
+ lapic_timer_count_t *current_count)
+{
+ boolean_t state;
+
+ state = ml_set_interrupts_enabled(FALSE);
+ if (mode)
+ *mode = (LAPIC_REG(LVT_TIMER) & LAPIC_LVT_PERIODIC) ?
+ periodic : one_shot;
+ if (divisor)
+ *divisor = LAPIC_REG(TIMER_DIVIDE_CONFIG) & LAPIC_TIMER_DIVIDE_MASK;
+ if (initial_count)
+ *initial_count = LAPIC_REG(TIMER_INITIAL_COUNT);
+ if (current_count)
+ *current_count = LAPIC_REG(TIMER_CURRENT_COUNT);
+ ml_set_interrupts_enabled(state);
+}
+
+void
+lapic_set_pmi_func(i386_intr_func_t func)
+{
+ lapic_pmi_func = func;
+}
+
+static inline void
+_lapic_end_of_interrupt(void)
{
LAPIC_REG(EOI) = 0;
}
void
+lapic_end_of_interrupt(void)
+{
+ _lapic_end_of_interrupt();
+}
+
+int
lapic_interrupt(int interrupt, void *state)
{
+ interrupt -= lapic_interrupt_base;
+ if (interrupt < 0)
+ return 0;
switch(interrupt) {
- case APIC_ERROR_INTERRUPT:
+ case LAPIC_PERFCNT_INTERRUPT:
+ if (lapic_pmi_func != NULL)
+ (*lapic_pmi_func)(
+ (struct i386_interrupt_state *) state);
+ /* Clear interrupt masked */
+ LAPIC_REG(LVT_PERFCNT) = LAPIC_VECTOR(PERFCNT);
+ _lapic_end_of_interrupt();
+ return 1;
+ case LAPIC_TIMER_INTERRUPT:
+ _lapic_end_of_interrupt();
+ if (lapic_timer_func != NULL)
+ (*lapic_timer_func)(
+ (struct i386_interrupt_state *) state);
+ return 1;
+ case LAPIC_ERROR_INTERRUPT:
+ lapic_dump();
panic("Local APIC error\n");
- break;
- case SPURIOUS_INTERRUPT:
+ _lapic_end_of_interrupt();
+ return 1;
+ case LAPIC_SPURIOUS_INTERRUPT:
kprintf("SPIV\n");
- break;
- case INTERPROCESS_INTERRUPT:
+ /* No EOI required here */
+ return 1;
+ case LAPIC_INTERPROCESSOR_INTERRUPT:
cpu_signal_handler((struct i386_interrupt_state *) state);
- break;
+ _lapic_end_of_interrupt();
+ return 1;
}
- lapic_end_of_interrupt();
+ return 0;
+}
+
+void
+lapic_smm_restore(void)
+{
+ boolean_t state;
+
+ if (lapic_os_enabled == FALSE)
+ return;
+
+ state = ml_set_interrupts_enabled(FALSE);
+
+ if (LAPIC_ISR_IS_SET(LAPIC_REDUCED_INTERRUPT_BASE, TIMER)) {
+ /*
+ * Bogus SMI handler enables interrupts but does not know about
+ * local APIC interrupt sources. When APIC timer counts down to
+ * zero while in SMM, local APIC will end up waiting for an EOI
+ * but no interrupt was delivered to the OS.
+ */
+ _lapic_end_of_interrupt();
+
+ /*
+ * timer is one-shot, trigger another quick countdown to trigger
+ * another timer interrupt.
+ */
+ if (LAPIC_REG(TIMER_CURRENT_COUNT) == 0) {
+ LAPIC_REG(TIMER_INITIAL_COUNT) = 1;
+ }
+
+ kprintf("lapic_smm_restore\n");
+ }
+
+ ml_set_interrupts_enabled(state);
}
kern_return_t
{
int i = 1000;
- int lapic_id = cpu_to_lapic[slot_num];
+ int lapic = cpu_to_lapic[slot_num];
- if (slot_num == get_cpu_number())
- return KERN_SUCCESS;
+ assert(lapic != -1);
+
+ DBGLOG_CPU_INIT(slot_num);
- assert(lapic_id != -1);
+ DBG("intel_startCPU(%d) lapic_id=%d\n", slot_num, lapic);
+ DBG("IdlePTD(%p): 0x%x\n", &IdlePTD, (int) IdlePTD);
- DBG("intel_startCPU(%d) lapic_id=%d\n", slot_num, lapic_id);
+ /* Initialize (or re-initialize) the descriptor tables for this cpu. */
+ mp_desc_init(cpu_datap(slot_num), FALSE);
+
+ /* Serialize use of the slave boot stack. */
+ mutex_lock(&mp_cpu_boot_lock);
mp_disable_preemption();
+ if (slot_num == get_cpu_number()) {
+ mp_enable_preemption();
+ mutex_unlock(&mp_cpu_boot_lock);
+ return KERN_SUCCESS;
+ }
- LAPIC_REG(ICRD) = lapic_id << LAPIC_ICRD_DEST_SHIFT;
+ LAPIC_REG(ICRD) = lapic << LAPIC_ICRD_DEST_SHIFT;
LAPIC_REG(ICR) = LAPIC_ICR_DM_INIT;
delay(10000);
- LAPIC_REG(ICRD) = lapic_id << LAPIC_ICRD_DEST_SHIFT;
+ LAPIC_REG(ICRD) = lapic << LAPIC_ICRD_DEST_SHIFT;
LAPIC_REG(ICR) = LAPIC_ICR_DM_STARTUP|(MP_BOOT>>12);
delay(200);
+ LAPIC_REG(ICRD) = lapic << LAPIC_ICRD_DEST_SHIFT;
+ LAPIC_REG(ICR) = LAPIC_ICR_DM_STARTUP|(MP_BOOT>>12);
+ delay(200);
+
+#ifdef POSTCODE_DELAY
+ /* Wait much longer if postcodes are displayed for a delay period. */
+ i *= 10000;
+#endif
while(i-- > 0) {
- delay(10000);
- if (machine_slot[slot_num].running)
+ if (cpu_datap(slot_num)->cpu_running)
break;
+ delay(10000);
}
mp_enable_preemption();
+ mutex_unlock(&mp_cpu_boot_lock);
- if (!machine_slot[slot_num].running) {
+ if (!cpu_datap(slot_num)->cpu_running) {
DBG("Failed to start CPU %02d\n", slot_num);
- printf("Failed to start CPU %02d\n", slot_num);
+ printf("Failed to start CPU %02d, rebooting...\n", slot_num);
+ delay(1000000);
+ cpu_shutdown();
return KERN_SUCCESS;
} else {
DBG("Started CPU %02d\n", slot_num);
}
}
+extern char slave_boot_base[];
+extern char slave_boot_end[];
+extern void pstart(void);
+
void
slave_boot_init(void)
{
- extern char slave_boot_base[];
- extern char slave_boot_end[];
- extern void pstart(void);
-
- DBG("slave_base=%p slave_end=%p MP_BOOT P=%p V=%p\n",
- slave_boot_base, slave_boot_end, MP_BOOT, phystokv(MP_BOOT));
+ DBG("V(slave_boot_base)=%p P(slave_boot_base)=%p MP_BOOT=%p sz=0x%x\n",
+ slave_boot_base,
+ kvtophys((vm_offset_t) slave_boot_base),
+ MP_BOOT,
+ slave_boot_end-slave_boot_base);
/*
* Copy the boot entry code to the real-mode vector area MP_BOOT.
* This is in page 1 which has been reserved for this purpose by
* machine_startup() from the boot processor.
* The slave boot code is responsible for switching to protected
- * mode and then jumping to the common startup, pstart().
+ * mode and then jumping to the common startup, _start().
*/
- bcopy(slave_boot_base,
- (char *)phystokv(MP_BOOT),
- slave_boot_end-slave_boot_base);
+ bcopy_phys((addr64_t) kvtophys((vm_offset_t) slave_boot_base),
+ (addr64_t) MP_BOOT,
+ slave_boot_end-slave_boot_base);
/*
* Zero a stack area above the boot code.
*/
- bzero((char *)(phystokv(MP_BOOTSTACK+MP_BOOT)-0x400), 0x400);
+ DBG("bzero_phys 0x%x sz 0x%x\n",MP_BOOTSTACK+MP_BOOT-0x400, 0x400);
+ bzero_phys((addr64_t)MP_BOOTSTACK+MP_BOOT-0x400, 0x400);
/*
* Set the location at the base of the stack to point to the
* common startup entry.
*/
- *((vm_offset_t *) phystokv(MP_MACH_START+MP_BOOT)) =
- kvtophys((vm_offset_t)&pstart);
+ DBG("writing 0x%x at phys 0x%x\n",
+ kvtophys((vm_offset_t) &pstart), MP_MACH_START+MP_BOOT);
+ ml_phys_write_word(MP_MACH_START+MP_BOOT,
+ kvtophys((vm_offset_t) &pstart));
/* Flush caches */
__asm__("wbinvd");
}
#if MP_DEBUG
-cpu_signal_event_log_t cpu_signal[NCPUS] = { 0, 0, 0 };
-cpu_signal_event_log_t cpu_handle[NCPUS] = { 0, 0, 0 };
+cpu_signal_event_log_t *cpu_signal[MAX_CPUS];
+cpu_signal_event_log_t *cpu_handle[MAX_CPUS];
MP_EVENT_NAME_DECL();
-void
-cpu_signal_dump_last(int cpu)
-{
- cpu_signal_event_log_t *logp = &cpu_signal[cpu];
- int last;
- cpu_signal_event_t *eventp;
-
- last = (logp->next_entry == 0) ?
- LOG_NENTRIES - 1 : logp->next_entry - 1;
-
- eventp = &logp->entry[last];
-
- kprintf("cpu%d: tsc=%lld cpu_signal(%d,%s)\n",
- cpu, eventp->time, eventp->cpu, mp_event_name[eventp->event]);
-}
-
-void
-cpu_handle_dump_last(int cpu)
-{
- cpu_signal_event_log_t *logp = &cpu_handle[cpu];
- int last;
- cpu_signal_event_t *eventp;
-
- last = (logp->next_entry == 0) ?
- LOG_NENTRIES - 1 : logp->next_entry - 1;
-
- eventp = &logp->entry[last];
-
- kprintf("cpu%d: tsc=%lld cpu_signal_handle%s\n",
- cpu, eventp->time, mp_event_name[eventp->event]);
-}
#endif /* MP_DEBUG */
void
-cpu_signal_handler(struct i386_interrupt_state *regs)
+cpu_signal_handler(__unused struct i386_interrupt_state *regs)
{
- register my_cpu;
+ int my_cpu;
volatile int *my_word;
#if MACH_KDB && MACH_ASSERT
int i=100;
mp_disable_preemption();
my_cpu = cpu_number();
- my_word = &cpu_data[my_cpu].cpu_signals;
+ my_word = ¤t_cpu_datap()->cpu_signals;
do {
#if MACH_KDB && MACH_ASSERT
mp_kdp_wait();
} else
#endif /* MACH_KDP */
- if (i_bit(MP_CLOCK, my_word)) {
- DBGLOG(cpu_handle,my_cpu,MP_CLOCK);
- i_bit_clear(MP_CLOCK, my_word);
- hardclock(regs);
- } else if (i_bit(MP_TLB_FLUSH, my_word)) {
+ if (i_bit(MP_TLB_FLUSH, my_word)) {
DBGLOG(cpu_handle,my_cpu,MP_TLB_FLUSH);
i_bit_clear(MP_TLB_FLUSH, my_word);
pmap_update_interrupt();
}
+#ifdef MP_DEBUG
+extern int max_lock_loops;
+#endif /* MP_DEBUG */
void
cpu_interrupt(int cpu)
{
if (smp_initialized) {
/* Wait for previous interrupt to be delivered... */
- while (LAPIC_REG(ICR) & LAPIC_ICR_DS_PENDING)
+#ifdef MP_DEBUG
+ int pending_busy_count = 0;
+ while (LAPIC_REG(ICR) & LAPIC_ICR_DS_PENDING) {
+ if (++pending_busy_count > max_lock_loops)
+ panic("cpus_interrupt() deadlock\n");
+#else
+ while (LAPIC_REG(ICR) & LAPIC_ICR_DS_PENDING) {
+#endif /* MP_DEBUG */
cpu_pause();
+ }
state = ml_set_interrupts_enabled(FALSE);
LAPIC_REG(ICRD) =
cpu_to_lapic[cpu] << LAPIC_ICRD_DEST_SHIFT;
LAPIC_REG(ICR) =
- INTERPROCESS_INTERRUPT | LAPIC_ICR_DM_FIXED;
+ LAPIC_VECTOR(INTERPROCESSOR) | LAPIC_ICR_DM_FIXED;
(void) ml_set_interrupts_enabled(state);
}
}
-void
-slave_clock(void)
-{
- int cpu;
-
- /*
- * Clock interrupts are chained from the boot processor
- * to the next logical processor that is running and from
- * there on to any further running processor etc.
- */
- mp_disable_preemption();
- for (cpu=cpu_number()+1; cpu<NCPUS; cpu++)
- if (machine_slot[cpu].running) {
- i386_signal_cpu(cpu, MP_CLOCK, ASYNC);
- mp_enable_preemption();
- return;
- }
- mp_enable_preemption();
-
-}
-
void
i386_signal_cpu(int cpu, mp_event_t event, mp_sync_t mode)
{
- volatile int *signals = &cpu_data[cpu].cpu_signals;
- uint64_t timeout;
+ volatile int *signals = &cpu_datap(cpu)->cpu_signals;
+ uint64_t tsc_timeout;
- if (!cpu_data[cpu].cpu_status)
+ if (!cpu_datap(cpu)->cpu_running)
return;
DBGLOG(cpu_signal, cpu, event);
cpu_interrupt(cpu);
if (mode == SYNC) {
again:
- timeout = rdtsc64() + (1000*1000*1000);
- while (i_bit(event, signals) && rdtsc64() < timeout) {
+ tsc_timeout = rdtsc64() + (1000*1000*1000);
+ while (i_bit(event, signals) && rdtsc64() < tsc_timeout) {
cpu_pause();
}
if (i_bit(event, signals)) {
void
i386_signal_cpus(mp_event_t event, mp_sync_t mode)
{
- int cpu;
- int my_cpu = cpu_number();
+ unsigned int cpu;
+ unsigned int my_cpu = cpu_number();
- for (cpu = 0; cpu < NCPUS; cpu++) {
- if (cpu == my_cpu || !machine_slot[cpu].running)
+ for (cpu = 0; cpu < real_ncpus; cpu++) {
+ if (cpu == my_cpu || !cpu_datap(cpu)->cpu_running)
continue;
i386_signal_cpu(cpu, event, mode);
}
int
i386_active_cpus(void)
{
- int cpu;
- int ncpus = 0;
+ unsigned int cpu;
+ unsigned int ncpus = 0;
- for (cpu = 0; cpu < NCPUS; cpu++) {
- if (machine_slot[cpu].running)
+ for (cpu = 0; cpu < real_ncpus; cpu++) {
+ if (cpu_datap(cpu)->cpu_running)
ncpus++;
}
return(ncpus);
mp_rv_setup_func(mp_rv_func_arg);
/* spin on entry rendezvous */
atomic_incl(&mp_rv_waiters[0], 1);
- while (mp_rv_waiters[0] < mp_rv_ncpus)
+ while (*((volatile long *) &mp_rv_waiters[0]) < mp_rv_ncpus)
cpu_pause();
/* action function */
if (mp_rv_action_func != NULL)
mp_rv_action_func(mp_rv_func_arg);
/* spin on exit rendezvous */
atomic_incl(&mp_rv_waiters[1], 1);
- while (mp_rv_waiters[1] < mp_rv_ncpus)
+ while (*((volatile long *) &mp_rv_waiters[1]) < mp_rv_ncpus)
cpu_pause();
/* teardown function */
if (mp_rv_teardown_func != NULL)
#if MACH_KDP
volatile boolean_t mp_kdp_trap = FALSE;
long mp_kdp_ncpus;
+boolean_t mp_kdp_state;
+
void
mp_kdp_enter(void)
{
- int cpu;
- int ncpus;
- int my_cpu = cpu_number();
- boolean_t state;
- uint64_t timeout;
+ unsigned int cpu;
+ unsigned int ncpus;
+ unsigned int my_cpu = cpu_number();
+ uint64_t tsc_timeout;
DBG("mp_kdp_enter()\n");
* In case of races, only one cpu is allowed to enter kdp after
* stopping others.
*/
- state = ml_set_interrupts_enabled(FALSE);
+ mp_kdp_state = ml_set_interrupts_enabled(FALSE);
simple_lock(&mp_kdp_lock);
while (mp_kdp_trap) {
simple_unlock(&mp_kdp_lock);
mp_kdp_ncpus = 1; /* self */
mp_kdp_trap = TRUE;
simple_unlock(&mp_kdp_lock);
- (void) ml_set_interrupts_enabled(state);
/* Deliver a nudge to other cpus, counting how many */
DBG("mp_kdp_enter() signaling other processors\n");
- for (ncpus = 1, cpu = 0; cpu < NCPUS; cpu++) {
- if (cpu == my_cpu || !machine_slot[cpu].running)
+ for (ncpus = 1, cpu = 0; cpu < real_ncpus; cpu++) {
+ if (cpu == my_cpu || !cpu_datap(cpu)->cpu_running)
continue;
ncpus++;
i386_signal_cpu(cpu, MP_KDP, ASYNC);
/* Wait other processors to spin. */
DBG("mp_kdp_enter() waiting for (%d) processors to suspend\n", ncpus);
- timeout = rdtsc64() + (1000*1000*1000);
- while (*((volatile long *) &mp_kdp_ncpus) != ncpus
- && rdtsc64() < timeout) {
+ tsc_timeout = rdtsc64() + (1000*1000*1000);
+ while (*((volatile unsigned int *) &mp_kdp_ncpus) != ncpus
+ && rdtsc64() < tsc_timeout) {
cpu_pause();
}
DBG("mp_kdp_enter() %d processors done %s\n",
mp_kdp_ncpus, (mp_kdp_ncpus == ncpus) ? "OK" : "timed out");
+ postcode(MP_KDP_ENTER);
}
static void
mp_kdp_wait(void)
{
+ boolean_t state;
+
+ state = ml_set_interrupts_enabled(TRUE);
DBG("mp_kdp_wait()\n");
atomic_incl(&mp_kdp_ncpus, 1);
while (mp_kdp_trap) {
}
atomic_decl(&mp_kdp_ncpus, 1);
DBG("mp_kdp_wait() done\n");
+ (void) ml_set_interrupts_enabled(state);
}
void
cpu_pause();
}
DBG("mp_kdp_exit() done\n");
+ (void) ml_set_interrupts_enabled(mp_kdp_state);
+ postcode(0);
}
#endif /* MACH_KDP */
-void
-lapic_test(void)
-{
- int cpu = 1;
-
- lapic_dump();
- i_bit_set(0, &cpu_data[cpu].cpu_signals);
- cpu_interrupt(1);
-}
-
/*ARGSUSED*/
void
init_ast_check(
- processor_t processor)
+ __unused processor_t processor)
{
}
cause_ast_check(
processor_t processor)
{
- int cpu = processor->slot_num;
+ int cpu = PROCESSOR_DATA(processor, slot_num);
if (cpu != cpu_number()) {
i386_signal_cpu(cpu, MP_AST, ASYNC);
void
remote_kdb(void)
{
- int my_cpu = cpu_number();
- int cpu;
+ unsigned int my_cpu = cpu_number();
+ unsigned int cpu;
mp_disable_preemption();
- for (cpu = 0; cpu < NCPUS; cpu++) {
- if (cpu == my_cpu || !machine_slot[cpu].running)
+ for (cpu = 0; cpu < real_ncpus; cpu++) {
+ if (cpu == my_cpu || !cpu_datap(cpu)->cpu_running)
continue;
i386_signal_cpu(cpu, MP_KDB, SYNC);
}
clear_kdb_intr(void)
{
mp_disable_preemption();
- i_bit_clear(MP_KDB, &cpu_data[cpu_number()].cpu_signals);
+ i_bit_clear(MP_KDB, ¤t_cpu_datap()->cpu_signals);
mp_enable_preemption();
}
+/*
+ * i386_init_slave() is called from pstart.
+ * We're in the cpu's interrupt stack with interrupts disabled.
+ */
void
-slave_machine_init(void)
+i386_init_slave(void)
{
- int my_cpu;
+ postcode(I386_INIT_SLAVE);
/* Ensure that caching and write-through are enabled */
set_cr0(get_cr0() & ~(CR0_NW|CR0_CD));
- mp_disable_preemption();
- my_cpu = get_cpu_number();
-
- DBG("slave_machine_init() CPU%d: phys (%d) active.\n",
- my_cpu, get_cpu_phys_number());
+ DBG("i386_init_slave() CPU%d: phys (%d) active.\n",
+ get_cpu_number(), get_cpu_phys_number());
lapic_init();
+ LAPIC_DUMP();
+ LAPIC_CPU_MAP_DUMP();
+
+ mtrr_update_cpu();
+
+ pat_init();
+
+ cpu_init();
+
+ slave_main();
+
+ panic("i386_init_slave() returned from slave_main()");
+}
+
+void
+slave_machine_init(void)
+{
+ /*
+ * Here in process context.
+ */
+ DBG("slave_machine_init() CPU%d\n", get_cpu_number());
+
init_fpu();
- cpu_machine_init();
+ cpu_thread_init();
- mp_enable_preemption();
+ pmc_init();
-#ifdef MP_DEBUG
- lapic_dump();
- lapic_cpu_map_dump();
-#endif /* MP_DEBUG */
+ cpu_machine_init();
+ clock_init();
}
#undef cpu_number()
projects / apple / xnu.git / blobdiff