x86: Add UV partition call v4

Add a bios call to return partitioning related info.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 47 insertions, 11 deletions

diff --git a/arch/x86/kernel/bios_uv.c b/arch/x86/kernel/bios_uv.c
index 5481eb59f78..f0dfe6f17e7 100644
--- a/arch/x86/kernel/bios_uv.c
+++ b/arch/x86/kernel/bios_uv.c
@@ -23,6 +23,7 @@
 #include <asm/efi.h>
 #include <linux/io.h>
 #include <asm/uv/bios.h>
+#include <asm/uv/uv_hub.h>
 
 struct uv_systab uv_systab;
 
@@ -65,14 +66,47 @@ s64 uv_bios_call_reentrant(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
         return ret;
 }
 
-long
-x86_bios_freq_base(unsigned long clock_type, unsigned long *ticks_per_second,
-                                        unsigned long *drift_info)
+
+long sn_partition_id;
+EXPORT_SYMBOL_GPL(sn_partition_id);
+long uv_coherency_id;
+EXPORT_SYMBOL_GPL(uv_coherency_id);
+long uv_region_size;
+EXPORT_SYMBOL_GPL(uv_region_size);
+int uv_type;
+
+
+s64 uv_bios_get_sn_info(int fc, int *uvtype, long *partid, long *coher,
+                long *region)
+{
+        s64 ret;
+        u64 v0, v1;
+        union partition_info_u part;
+
+        ret = uv_bios_call_irqsave(UV_BIOS_GET_SN_INFO, fc,
+                                (u64)(&v0), (u64)(&v1), 0, 0);
+        if (ret != BIOS_STATUS_SUCCESS)
+                return ret;
+
+        part.val = v0;
+        if (uvtype)
+                *uvtype = part.hub_version;
+        if (partid)
+                *partid = part.partition_id;
+        if (coher)
+                *coher = part.coherence_id;
+        if (region)
+                *region = part.region_size;
+        return ret;
+}
+
+
+s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second)
 {
         return uv_bios_call(UV_BIOS_FREQ_BASE, clock_type,
-                                (u64)ticks_per_second, 0, 0, 0);
+                           (u64)ticks_per_second, 0, 0, 0);
 }
-EXPORT_SYMBOL_GPL(x86_bios_freq_base);
+EXPORT_SYMBOL_GPL(uv_bios_freq_base);
 
 
 #ifdef CONFIG_EFI
diff --git a/arch/x86/kernel/genx2apic_uv_x.c b/arch/x86/kernel/genx2apic_uv_x.c
index aa2e5e15bf6..bfd532843df 100644
--- a/arch/x86/kernel/genx2apic_uv_x.c
+++ b/arch/x86/kernel/genx2apic_uv_x.c
@@ -341,12 +341,12 @@ static __init void map_mmioh_high(int max_pnode)
 
 static __init void uv_rtc_init(void)
 {
-        long status, ticks_per_sec, drift;
+        long status;
+        u64 ticks_per_sec;
 
-        status =
-            x86_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,
-                                        &drift);
-        if (status != 0 || ticks_per_sec < 100000) {
+        status = uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK,
+                                        &ticks_per_sec);
+        if (status != BIOS_STATUS_SUCCESS || ticks_per_sec < 100000) {
                 printk(KERN_WARNING
                         "unable to determine platform RTC clock frequency, "
                         "guessing.\n");
@@ -428,6 +428,8 @@ void __init uv_system_init(void)
                        ~((1 << n_val) - 1)) << m_val;
 
         uv_bios_init();
+        uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,
+                            &uv_coherency_id, &uv_region_size);
         uv_rtc_init();
 
         for_each_present_cpu(cpu) {
@@ -449,7 +451,7 @@ void __init uv_system_init(void)
                 uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
                 uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
                 uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
-                uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
+                uv_cpu_hub_info(cpu)->coherency_domain_number = uv_coherency_id;
                 uv_node_to_blade[nid] = blade;
                 uv_cpu_to_blade[cpu] = blade;
                 max_pnode = max(pnode, max_pnode);