diff options
author | Jack Steiner <steiner@sgi.com> | 2010-01-12 16:09:04 -0500 |
---|---|---|
committer | H. Peter Anvin <hpa@zytor.com> | 2010-01-15 14:08:55 -0500 |
commit | 7a1110e861b2666ac09f5708d6fbe71d18ce64bb (patch) | |
tree | 2958eb36de538330534c94ccfc5960133b3a4633 /arch/x86/kernel/apic/x2apic_uv_x.c | |
parent | e68266b7001a4e29af083716f0c36c0d6dbb1b39 (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/kernel/apic/x2apic_uv_x.c')
-rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index b8bb869a661..0e48de9ff86 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c | |||
@@ -36,6 +36,8 @@ DEFINE_PER_CPU(int, x2apic_extra_bits); | |||
36 | 36 | ||
37 | static enum uv_system_type uv_system_type; | 37 | static enum uv_system_type uv_system_type; |
38 | static u64 gru_start_paddr, gru_end_paddr; | 38 | static u64 gru_start_paddr, gru_end_paddr; |
39 | int uv_min_hub_revision_id; | ||
40 | EXPORT_SYMBOL_GPL(uv_min_hub_revision_id); | ||
39 | 41 | ||
40 | static inline bool is_GRU_range(u64 start, u64 end) | 42 | static inline bool is_GRU_range(u64 start, u64 end) |
41 | { | 43 | { |
@@ -55,6 +57,10 @@ static int early_get_nodeid(void) | |||
55 | mmr = early_ioremap(UV_LOCAL_MMR_BASE | UVH_NODE_ID, sizeof(*mmr)); | 57 | mmr = early_ioremap(UV_LOCAL_MMR_BASE | UVH_NODE_ID, sizeof(*mmr)); |
56 | node_id.v = *mmr; | 58 | node_id.v = *mmr; |
57 | early_iounmap(mmr, sizeof(*mmr)); | 59 | early_iounmap(mmr, sizeof(*mmr)); |
60 | |||
61 | /* Currently, all blades have same revision number */ | ||
62 | uv_min_hub_revision_id = node_id.s.revision; | ||
63 | |||
58 | return node_id.s.node_id; | 64 | return node_id.s.node_id; |
59 | } | 65 | } |
60 | 66 | ||