From 66666e50fcd69d80117d7d243ce02e1f774cbaf5 Mon Sep 17 00:00:00 2001
From: Jack Steiner <steiner@sgi.com>
Date: Thu, 2 Apr 2009 16:59:03 -0700
Subject: sgi-gru: add macros for using the UV hub to send interrupts

Add macros for using the UV hub to send interrupts.  Change the IPI code
to use these macros.  These macros will also be used in additional patches
that will follow.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/x86/include/asm/uv/uv_hub.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'arch/x86/include/asm/uv')

diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h
index 466ac8d09b15..d3a98ea1062e 100644
--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -17,6 +17,7 @@
 #include <linux/timer.h>
 #include <asm/types.h>
 #include <asm/percpu.h>
+#include <asm/uv/uv_mmrs.h>
 
 
 /*
@@ -398,6 +399,7 @@ static inline void uv_set_scir_bits(unsigned char value)
 		uv_write_local_mmr8(uv_hub_info->scir.offset, value);
 	}
 }
+
 static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value)
 {
 	if (uv_cpu_hub_info(cpu)->scir.state != value) {
@@ -406,5 +408,15 @@ static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value)
 	}
 }
 
+static inline void uv_hub_send_ipi(int pnode, int apicid, int vector)
+{
+	unsigned long val;
+
+	val = (1UL << UVH_IPI_INT_SEND_SHFT) |
+			((apicid & 0x3f) << UVH_IPI_INT_APIC_ID_SHFT) |
+			(vector << UVH_IPI_INT_VECTOR_SHFT);
+	uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
+}
+
 #endif /* CONFIG_X86_64 */
 #endif /* _ASM_X86_UV_UV_HUB_H */
-- 
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