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authorJack Steiner <steiner@sgi.com>2010-01-12 15:09:04 -0600
committerH. Peter Anvin <hpa@zytor.com>2010-01-15 11:08:55 -0800
commit7a1110e861b2666ac09f5708d6fbe71d18ce64bb (patch)
tree2958eb36de538330534c94ccfc5960133b3a4633 /arch/x86/include
parente68266b7001a4e29af083716f0c36c0d6dbb1b39 (diff)
x86, uv: Add function retrieving node controller revision number
Add function for determining the revision id of the SGI UV node controller chip (HUB). This function is needed in a subsequent patch. Signed-off-by: Jack Steiner <steiner@sgi.com> LKML-Reference: <20100112210904.GA24546@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include')
-rw-r--r--arch/x86/include/asm/uv/uv_hub.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h
index bc54fa965af..40be813fefb 100644
--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -495,5 +495,17 @@ static inline void uv_hub_send_ipi(int pnode, int apicid, int vector)
uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
}
+/*
+ * Get the minimum revision number of the hub chips within the partition.
+ * 1 - initial rev 1.0 silicon
+ * 2 - rev 2.0 production silicon
+ */
+static inline int uv_get_min_hub_revision_id(void)
+{
+ extern int uv_min_hub_revision_id;
+
+ return uv_min_hub_revision_id;
+}
+
#endif /* CONFIG_X86_64 */
#endif /* _ASM_X86_UV_UV_HUB_H */