diff options
author | Len Brown <len.brown@intel.com> | 2009-04-05 02:14:15 -0400 |
---|---|---|
committer | Len Brown <len.brown@intel.com> | 2009-04-05 02:14:15 -0400 |
commit | 478c6a43fcbc6c11609f8cee7c7b57223907754f (patch) | |
tree | a7f7952099da60d33032aed6de9c0c56c9f8779e /arch/x86/include/asm/smpboot_hooks.h | |
parent | 8a3f257c704e02aee9869decd069a806b45be3f1 (diff) | |
parent | 6bb597507f9839b13498781e481f5458aea33620 (diff) |
Merge branch 'linus' into release
Conflicts:
arch/x86/kernel/cpu/cpufreq/longhaul.c
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86/include/asm/smpboot_hooks.h')
-rw-r--r-- | arch/x86/include/asm/smpboot_hooks.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/x86/include/asm/smpboot_hooks.h b/arch/x86/include/asm/smpboot_hooks.h new file mode 100644 index 00000000000..1def6011490 --- /dev/null +++ b/arch/x86/include/asm/smpboot_hooks.h @@ -0,0 +1,61 @@ +/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws + * which needs to alter them. */ + +static inline void smpboot_clear_io_apic_irqs(void) +{ +#ifdef CONFIG_X86_IO_APIC + io_apic_irqs = 0; +#endif +} + +static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip) +{ + CMOS_WRITE(0xa, 0xf); + local_flush_tlb(); + pr_debug("1.\n"); + *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_high)) = + start_eip >> 4; + pr_debug("2.\n"); + *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_low)) = + start_eip & 0xf; + pr_debug("3.\n"); +} + +static inline void smpboot_restore_warm_reset_vector(void) +{ + /* + * Install writable page 0 entry to set BIOS data area. + */ + local_flush_tlb(); + + /* + * Paranoid: Set warm reset code and vector here back + * to default values. + */ + CMOS_WRITE(0, 0xf); + + *((volatile long *)phys_to_virt(apic->trampoline_phys_low)) = 0; +} + +static inline void __init smpboot_setup_io_apic(void) +{ +#ifdef CONFIG_X86_IO_APIC + /* + * Here we can be sure that there is an IO-APIC in the system. Let's + * go and set it up: + */ + if (!skip_ioapic_setup && nr_ioapics) + setup_IO_APIC(); + else { + nr_ioapics = 0; + localise_nmi_watchdog(); + } +#endif +} + +static inline void smpboot_clear_io_apic(void) +{ +#ifdef CONFIG_X86_IO_APIC + nr_ioapics = 0; +#endif +} |