---

yaml --- r: 53894 b: refs/heads/master c: 8339e9f h: refs/heads/master v: v3
git-mirror · May 2, 2007 · af5bd32 · af5bd32
1 parent f99e00d
commit af5bd32
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Showing 3 changed files with 26 additions and 6 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f2b218dd6199983b120a96bc6531c1b81f4090d8
+refs/heads/master: 8339e9fba33aa3205f541478c413982c0ac5a37f
diff --git a/trunk/arch/x86_64/kernel/apic.c b/trunk/arch/x86_64/kernel/apic.c
@@ -68,6 +68,28 @@ int using_apic_timer __read_mostly = 0;
 
 static void apic_pm_activate(void);
 
+void apic_wait_icr_idle(void)
+{
+	while (apic_read(APIC_ICR) & APIC_ICR_BUSY)
+		cpu_relax();
+}
+
+unsigned int safe_apic_wait_icr_idle(void)
+{
+	unsigned int send_status;
+	int timeout;
+
+	timeout = 0;
+	do {
+		send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY;
+		if (!send_status)
+			break;
+		udelay(100);
+	} while (timeout++ < 1000);
+
+	return send_status;
+}
+
 void enable_NMI_through_LVT0 (void * dummy)
 {
 	unsigned int v;

diff --git a/trunk/include/asm-x86_64/apic.h b/trunk/include/asm-x86_64/apic.h
@@ -2,6 +2,7 @@
 #define __ASM_APIC_H
 
 #include <linux/pm.h>
+#include <linux/delay.h>
 #include <asm/fixmap.h>
 #include <asm/apicdef.h>
 #include <asm/system.h>
@@ -47,11 +48,8 @@ static __inline unsigned int apic_read(unsigned long reg)
 	return *((volatile unsigned int *)(APIC_BASE+reg));
 }
 
-static __inline__ void apic_wait_icr_idle(void)
-{
-	while (apic_read( APIC_ICR ) & APIC_ICR_BUSY)
-		cpu_relax();
-}
+extern void apic_wait_icr_idle(void);
+extern unsigned int safe_apic_wait_icr_idle(void);
 
 static inline void ack_APIC_irq(void)
 {