diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-firmware-sgi_uv')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-sgi_uv | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-sgi_uv b/Documentation/ABI/testing/sysfs-firmware-sgi_uv index 351b1f41b6bf..637c668cbe45 100644 --- a/Documentation/ABI/testing/sysfs-firmware-sgi_uv +++ b/Documentation/ABI/testing/sysfs-firmware-sgi_uv @@ -7,10 +7,25 @@ Description: Under that directory are a number of read-only attributes:: + archtype + hub_type + hubless partition_id coherence_id uv_type + The archtype entry contains the UV architecture type that + is used to select arch-dependent addresses and features. + It can be set via the OEM_ID in the ACPI MADT table or by + UVsystab entry both passed from UV BIOS. + + The hub_type entry is used to select the type of hub which is + similar to uv_type but encoded in a binary format. Include + the file uv_hub.h to get the definitions. + + The hubless entry basically is present and set only if there + is no hub. In this case the hub_type entry is not present. + The partition_id entry contains the partition id. UV systems can be partitioned into multiple physical machines, which each partition running a unique copy @@ -24,6 +39,7 @@ Description: The uv_type entry contains the hub revision number. This value can be used to identify the UV system version:: + "0.*" = Hubless UV ('*' is subtype) "3.0" = UV2 "5.0" = UV3 |