summaryrefslogtreecommitdiffstats
path: root/arch/x86
diff options
context:
space:
mode:
authorJack Steiner <steiner@sgi.com>2011-11-29 15:00:58 -0600
committerIngo Molnar <mingo@elte.hu>2011-12-05 11:49:52 +0100
commitb495e039b4ce2ce4a96b3006004faf082f4d50e2 (patch)
treea5f9d380c24799abab1c69a80d0791e901db745f /arch/x86
parent69682b625a043b567873e6cda397969b502f0054 (diff)
downloadop-kernel-dev-b495e039b4ce2ce4a96b3006004faf082f4d50e2.zip
op-kernel-dev-b495e039b4ce2ce4a96b3006004faf082f4d50e2.tar.gz
x86, UV: Fix UV2 hub part number
There was a mixup when the SGI UV2 hub chip was sent to be fabricated, and it ended up with the wrong part number in the HRP_NODE_ID mmr. Future versions of the chip will (may) have the correct part number. Change the UV infrastructure to recognize both part numbers as valid IDs of a UV2 hub chip. Signed-off-by: Jack Steiner <steiner@sgi.com> Link: http://lkml.kernel.org/r/20111129210058.GA20452@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/uv/uv_mmrs.h1
-rw-r--r--arch/x86/kernel/apic/x2apic_uv_x.c2
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/uv/uv_mmrs.h b/arch/x86/include/asm/uv/uv_mmrs.h
index 10474fb..cf1d736 100644
--- a/arch/x86/include/asm/uv/uv_mmrs.h
+++ b/arch/x86/include/asm/uv/uv_mmrs.h
@@ -57,6 +57,7 @@
#define UV1_HUB_PART_NUMBER 0x88a5
#define UV2_HUB_PART_NUMBER 0x8eb8
+#define UV2_HUB_PART_NUMBER_X 0x1111
/* Compat: if this #define is present, UV headers support UV2 */
#define UV2_HUB_IS_SUPPORTED 1
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 62ae300..9d59bba 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -93,6 +93,8 @@ static int __init early_get_pnodeid(void)
if (node_id.s.part_number == UV2_HUB_PART_NUMBER)
uv_min_hub_revision_id += UV2_HUB_REVISION_BASE - 1;
+ if (node_id.s.part_number == UV2_HUB_PART_NUMBER_X)
+ uv_min_hub_revision_id += UV2_HUB_REVISION_BASE - 1;
uv_hub_info->hub_revision = uv_min_hub_revision_id;
pnode = (node_id.s.node_id >> 1) & ((1 << m_n_config.s.n_skt) - 1);
OpenPOWER on IntegriCloud