diff options
author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
---|---|---|
committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/x86/include/asm/smpboot_hooks.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/x86/include/asm/smpboot_hooks.h')
-rw-r--r-- | arch/x86/include/asm/smpboot_hooks.h | 68 |
1 files changed, 68 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 00000000..49adfd7b --- /dev/null +++ b/arch/x86/include/asm/smpboot_hooks.h @@ -0,0 +1,68 @@ +/* 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) +{ + unsigned long flags; + + spin_lock_irqsave(&rtc_lock, flags); + CMOS_WRITE(0xa, 0xf); + spin_unlock_irqrestore(&rtc_lock, flags); + 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) +{ + unsigned long flags; + + /* + * 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. + */ + spin_lock_irqsave(&rtc_lock, flags); + CMOS_WRITE(0, 0xf); + spin_unlock_irqrestore(&rtc_lock, flags); + + *((volatile u32 *)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; + } +#endif +} + +static inline void smpboot_clear_io_apic(void) +{ +#ifdef CONFIG_X86_IO_APIC + nr_ioapics = 0; +#endif +} |