[PATCH] [2/4 try 4] x86_64: apic support for extended apic interrupt LVT

Jacob Shin jacob.w.shin at gmail.com
Wed May 31 18:05:19 CEST 2006


Add support for extended APIC LVT found in future AMD processors.

Signed-off-by: Jacob Shin <jacob.shin at amd.com>

---
 arch/x86_64/kernel/apic.c |   10 ++++------
 include/asm-x86_64/apic.h |   11 ++++++++++-
 2 files changed, 14 insertions(+), 7 deletions(-)

Index: linux/arch/x86_64/kernel/apic.c
===================================================================
--- linux.orig/arch/x86_64/kernel/apic.c
+++ linux/arch/x86_64/kernel/apic.c
@@ -908,15 +908,13 @@ int setup_profiling_timer(unsigned int m
 	return -EINVAL;
 }

-#ifdef CONFIG_X86_MCE_AMD
-void setup_threshold_lvt(unsigned long lvt_off)
+void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
+			    unsigned char msg_type, unsigned char mask)
 {
-	unsigned int v = 0;
-	unsigned long reg = (lvt_off << 4) + 0x500;
-	v |= THRESHOLD_APIC_VECTOR;
+	unsigned long reg = (lvt_off << 4) + K8_APIC_EXT_LVT_BASE;
+	unsigned int  v   = (mask << 16) | (msg_type << 8) | vector;
 	apic_write(reg, v);
 }
-#endif /* CONFIG_X86_MCE_AMD */

 #undef APIC_DIVISOR

Index: linux/include/asm-x86_64/apic.h
===================================================================
--- linux.orig/include/asm-x86_64/apic.h
+++ linux/include/asm-x86_64/apic.h
@@ -85,9 +85,18 @@ extern void disable_APIC_timer(void);
 extern void enable_APIC_timer(void);
 extern void clustered_apic_check(void);

+extern void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
+				   unsigned char msg_type, unsigned char mask);
+
+#define K8_APIC_EXT_LVT_BASE    0x500
+#define K8_APIC_EXT_INT_MSG_FIX 0x0
+#define K8_APIC_EXT_INT_MSG_SMI 0x2
+#define K8_APIC_EXT_INT_MSG_NMI 0x4
+#define K8_APIC_EXT_INT_MSG_EXT 0x7
+#define K8_APIC_EXT_LVT_ENTRY_THRESHOLD    0
+
 extern int disable_timer_pin_1;

-extern void setup_threshold_lvt(unsigned long lvt_off);

 void smp_send_timer_broadcast_ipi(void);
 void switch_APIC_timer_to_ipi(void *cpumask);



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