From 9a520fd8ca393ffff253fcaaa595a354ff111759 Mon Sep 17 00:00:00 2001
From: Suresh Siddha <suresh.b.siddha@intel.com>
Date: Thu, 10 Jul 2008 11:16:46 -0700
Subject: [PATCH] --- yaml --- r: 112645 b: refs/heads/master c:
 d94d93ca5cc36cd78c532def62772c98fe8ba5d7 h: refs/heads/master i:   112643:
 6dd137809e8ab33771a28fa129dbc061e7cf7ddc v: v3

---
 [refs]                        |  2 +-
 trunk/arch/x86/kernel/i8259.c | 24 ++++++++++++++++++++++++
 trunk/include/asm-x86/i8259.h |  3 +++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index a23a4e083cc6..7535e3af8389 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 72b1e22dfcad1daca6906148fd956ffe404bb0bc
+refs/heads/master: d94d93ca5cc36cd78c532def62772c98fe8ba5d7
diff --git a/trunk/arch/x86/kernel/i8259.c b/trunk/arch/x86/kernel/i8259.c
index dc92b49d9204..4b8a53d841f7 100644
--- a/trunk/arch/x86/kernel/i8259.c
+++ b/trunk/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/trunk/include/asm-x86/i8259.h b/trunk/include/asm-x86/i8259.h
index 2f98df91f1f2..31112b6c595b 100644
--- a/trunk/include/asm-x86/i8259.h
+++ b/trunk/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__ */