diff options
Diffstat (limited to 'arch/x86/kernel/apic_64.c')
| -rw-r--r-- | arch/x86/kernel/apic_64.c | 70 |
1 files changed, 30 insertions, 40 deletions
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c index 5910020c3f2..1e3d32e27c1 100644 --- a/arch/x86/kernel/apic_64.c +++ b/arch/x86/kernel/apic_64.c @@ -43,7 +43,7 @@ #include <mach_ipi.h> #include <mach_apic.h> -int disable_apic_timer __cpuinitdata; +static int disable_apic_timer __cpuinitdata; static int apic_calibrate_pmtmr __initdata; int disable_apic; @@ -56,6 +56,9 @@ EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok); */ int apic_verbosity; +/* Have we found an MP table */ +int smp_found_config; + static struct resource lapic_resource = { .name = "Local APIC", .flags = IORESOURCE_MEM | IORESOURCE_BUSY, @@ -87,9 +90,6 @@ static unsigned long apic_phys; unsigned long mp_lapic_addr; -DEFINE_PER_CPU(u16, x86_bios_cpu_apicid) = BAD_APICID; -EXPORT_PER_CPU_SYMBOL(x86_bios_cpu_apicid); - unsigned int __cpuinitdata maxcpus = NR_CPUS; /* * Get the LAPIC version @@ -417,37 +417,13 @@ void __init setup_boot_APIC_clock(void) lapic_clockevent.features &= ~CLOCK_EVT_FEAT_DUMMY; else printk(KERN_WARNING "APIC timer registered as dummy," - " due to nmi_watchdog=1!\n"); + " due to nmi_watchdog=%d!\n", nmi_watchdog); setup_APIC_timer(); } -/* - * AMD C1E enabled CPUs have a real nasty problem: Some BIOSes set the - * C1E flag only in the secondary CPU, so when we detect the wreckage - * we already have enabled the boot CPU local apic timer. Check, if - * disable_apic_timer is set and the DUMMY flag is cleared. If yes, - * set the DUMMY flag again and force the broadcast mode in the - * clockevents layer. - */ -static void __cpuinit check_boot_apic_timer_broadcast(void) -{ - if (!disable_apic_timer || - (lapic_clockevent.features & CLOCK_EVT_FEAT_DUMMY)) - return; - - printk(KERN_INFO "AMD C1E detected late. Force timer broadcast.\n"); - lapic_clockevent.features |= CLOCK_EVT_FEAT_DUMMY; - - local_irq_enable(); - clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_FORCE, - &boot_cpu_physical_apicid); - local_irq_disable(); -} - void __cpuinit setup_secondary_APIC_clock(void) { - check_boot_apic_timer_broadcast(); setup_APIC_timer(); } @@ -534,7 +510,7 @@ int setup_profiling_timer(unsigned int multiplier) */ void clear_local_APIC(void) { - int maxlvt = lapic_get_maxlvt(); + int maxlvt; u32 v; /* APIC hasn't been mapped yet */ @@ -850,7 +826,6 @@ static void __cpuinit lapic_setup_esr(void) void __cpuinit end_local_APIC_setup(void) { lapic_setup_esr(); - nmi_watchdog_default(); setup_apic_nmi_watchdog(NULL); apic_pm_activate(); } @@ -875,7 +850,7 @@ static int __init detect_init_APIC(void) void __init early_init_lapic_mapping(void) { - unsigned long apic_phys; + unsigned long phys_addr; /* * If no local APIC can be found then go out @@ -884,11 +859,11 @@ void __init early_init_lapic_mapping(void) if (!smp_found_config) return; - apic_phys = mp_lapic_addr; + phys_addr = mp_lapic_addr; - set_fixmap_nocache(FIX_APIC_BASE, apic_phys); + set_fixmap_nocache(FIX_APIC_BASE, phys_addr); apic_printk(APIC_VERBOSE, "mapped APIC to %16lx (%16lx)\n", - APIC_BASE, apic_phys); + APIC_BASE, phys_addr); /* * Fetch the APIC ID of the BSP in case we have a @@ -942,7 +917,9 @@ int __init APIC_init_uniprocessor(void) verify_local_APIC(); - phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid); + connect_bsp_APIC(); + + physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map); apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid)); setup_local_APIC(); @@ -954,6 +931,8 @@ int __init APIC_init_uniprocessor(void) if (!skip_ioapic_setup && nr_ioapics) enable_IO_APIC(); + if (!smp_found_config || skip_ioapic_setup || !nr_ioapics) + localise_nmi_watchdog(); end_local_APIC_setup(); if (smp_found_config && !skip_ioapic_setup && nr_ioapics) @@ -1021,6 +1000,14 @@ asmlinkage void smp_error_interrupt(void) irq_exit(); } +/** + * * connect_bsp_APIC - attach the APIC to the interrupt system + * */ +void __init connect_bsp_APIC(void) +{ + enable_apic_mode(); +} + void disconnect_bsp_APIC(int virt_wire_setup) { /* Go back to Virtual Wire compatibility mode */ @@ -1090,10 +1077,13 @@ void __cpuinit generic_processor_info(int apicid, int version) */ cpu = 0; } + if (apicid > max_physical_apicid) + max_physical_apicid = apicid; + /* are we being called early in kernel startup? */ - if (x86_cpu_to_apicid_early_ptr) { - u16 *cpu_to_apicid = x86_cpu_to_apicid_early_ptr; - u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr; + if (early_per_cpu_ptr(x86_cpu_to_apicid)) { + u16 *cpu_to_apicid = early_per_cpu_ptr(x86_cpu_to_apicid); + u16 *bios_cpu_apicid = early_per_cpu_ptr(x86_bios_cpu_apicid); cpu_to_apicid[cpu] = apicid; bios_cpu_apicid[cpu] = apicid; @@ -1269,7 +1259,7 @@ __cpuinit int apic_is_clustered_box(void) if ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) && !is_vsmp_box()) return 0; - bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr; + bios_cpu_apicid = early_per_cpu_ptr(x86_bios_cpu_apicid); bitmap_zero(clustermap, NUM_APIC_CLUSTERS); for (i = 0; i < NR_CPUS; i++) { |