diff options
| author | Jack Steiner <steiner@sgi.com> | 2008-03-28 14:12:06 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:41:33 +0200 |
| commit | ae261868658773538ddda829c50224e5851c2342 (patch) | |
| tree | c6176e3c2bffae7307f32900a723e49efb2d6246 /arch/x86/kernel/genapic_64.c | |
| parent | 05f2d12c3563dea8c81b301f9f3cf7919af23b13 (diff) | |
x86: add functions to determine if platform is a UV platform
Add functions that can be used to determine if an x86_64
system is a SGI "UV" system. UV systems come in 3 types and
are identified by the OEM ID in the MADT.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/genapic_64.c')
| -rw-r--r-- | arch/x86/kernel/genapic_64.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/x86/kernel/genapic_64.c b/arch/x86/kernel/genapic_64.c index 4ae7b644026..c873f60c74a 100644 --- a/arch/x86/kernel/genapic_64.c +++ b/arch/x86/kernel/genapic_64.c @@ -33,6 +33,8 @@ EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid); struct genapic __read_mostly *genapic = &apic_flat; +static enum uv_system_type uv_system_type; + /* * Check the APIC IDs in bios_cpu_apicid and choose the APIC mode. */ @@ -64,3 +66,26 @@ void send_IPI_self(int vector) { __send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL); } + +int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) +{ + if (!strcmp(oem_id, "SGI")) { + if (!strcmp(oem_table_id, "UVL")) + uv_system_type = UV_LEGACY_APIC; + else if (!strcmp(oem_table_id, "UVX")) + uv_system_type = UV_X2APIC; + else if (!strcmp(oem_table_id, "UVH")) + uv_system_type = UV_NON_UNIQUE_APIC; + } + return 0; +} + +enum uv_system_type get_uv_system_type(void) +{ + return uv_system_type; +} + +int is_uv_system(void) +{ + return uv_system_type != UV_NONE; +} |