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| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2008-07-10 11:16:46 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-12 08:44:55 +0200 |
| commit | d94d93ca5cc36cd78c532def62772c98fe8ba5d7 (patch) | |
| tree | 4f388f1005784e70947ffa4c3eadd24eb76b05ae | |
| parent | 72b1e22dfcad1daca6906148fd956ffe404bb0bc (diff) | |
| download | blackbird-op-linux-d94d93ca5cc36cd78c532def62772c98fe8ba5d7.tar.gz blackbird-op-linux-d94d93ca5cc36cd78c532def62772c98fe8ba5d7.zip | |
x64, x2apic/intr-remap: 8259 specific mask/unmask routines
8259 specific mask/unmask routines which be used later while enabling
interrupt-remapping.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: akpm@linux-foundation.org
Cc: arjan@linux.intel.com
Cc: andi@firstfloor.org
Cc: ebiederm@xmission.com
Cc: jbarnes@virtuousgeek.org
Cc: steiner@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/i8259.c | 24 | ||||
| -rw-r--r-- | include/asm-x86/i8259.h | 3 |
2 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index dc92b49d9204..4b8a53d841f7 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c @@ -282,6 +282,30 @@ static int __init i8259A_init_sysfs(void) device_initcall(i8259A_init_sysfs); +void mask_8259A(void) +{ + unsigned long flags; + + spin_lock_irqsave(&i8259A_lock, flags); + + outb(0xff, PIC_MASTER_IMR); /* mask all of 8259A-1 */ + outb(0xff, PIC_SLAVE_IMR); /* mask all of 8259A-2 */ + + spin_unlock_irqrestore(&i8259A_lock, flags); +} + +void unmask_8259A(void) +{ + unsigned long flags; + + spin_lock_irqsave(&i8259A_lock, flags); + + outb(cached_master_mask, PIC_MASTER_IMR); /* restore master IRQ mask */ + outb(cached_slave_mask, PIC_SLAVE_IMR); /* restore slave IRQ mask */ + + spin_unlock_irqrestore(&i8259A_lock, flags); +} + void init_8259A(int auto_eoi) { unsigned long flags; diff --git a/include/asm-x86/i8259.h b/include/asm-x86/i8259.h index 2f98df91f1f2..31112b6c595b 100644 --- a/include/asm-x86/i8259.h +++ b/include/asm-x86/i8259.h @@ -57,4 +57,7 @@ static inline void outb_pic(unsigned char value, unsigned int port) extern struct irq_chip i8259A_chip; +extern void mask_8259A(void); +extern void unmask_8259A(void); + #endif /* __ASM_I8259_H__ */ |
