Merge branch 'topic/hda' into for-linus

[pandora-kernel.git] / arch / x86 / kernel / apic / x2apic_uv_x.c

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 1248318..2bda693 100644 (file)
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -19,6 +19,7 @@
 #include <linux/timer.h>
 #include <linux/cpu.h>
 #include <linux/init.h>
+#include <linux/io.h>
 
 #include <asm/uv/uv_mmrs.h>
 #include <asm/uv/uv_hub.h>
@@ -34,6 +35,17 @@ DEFINE_PER_CPU(int, x2apic_extra_bits);
 
 static enum uv_system_type uv_system_type;
 
+static int early_get_nodeid(void)
+{
+       union uvh_node_id_u node_id;
+       unsigned long *mmr;
+
+       mmr = early_ioremap(UV_LOCAL_MMR_BASE | UVH_NODE_ID, sizeof(*mmr));
+       node_id.v = *mmr;
+       early_iounmap(mmr, sizeof(*mmr));
+       return node_id.s.node_id;
+}
+
 static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
        if (!strcmp(oem_id, "SGI")) {
@@ -42,6 +54,8 @@ static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
                else if (!strcmp(oem_table_id, "UVX"))
                        uv_system_type = UV_X2APIC;
                else if (!strcmp(oem_table_id, "UVH")) {
+                       __get_cpu_var(x2apic_extra_bits) =
+                               early_get_nodeid() << (UV_APIC_PNODE_SHIFT - 1);
                        uv_system_type = UV_NON_UNIQUE_APIC;
                        return 1;
                }
@@ -549,7 +563,8 @@ void __init uv_system_init(void)
        unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
        int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
        int max_pnode = 0;
-       unsigned long mmr_base, present;
+       unsigned long mmr_base, present, paddr;
+       unsigned short pnode_mask;
 
        map_low_mmrs();
 
@@ -592,6 +607,7 @@ void __init uv_system_init(void)
                }
        }
 
+       pnode_mask = (1 << n_val) - 1;
        node_id.v = uv_read_local_mmr(UVH_NODE_ID);
        gnode_upper = (((unsigned long)node_id.s.node_id) &
                       ~((1 << n_val) - 1)) << m_val;
@@ -615,7 +631,7 @@ void __init uv_system_init(void)
                uv_cpu_hub_info(cpu)->numa_blade_id = blade;
                uv_cpu_hub_info(cpu)->blade_processor_id = lcpu;
                uv_cpu_hub_info(cpu)->pnode = pnode;
-               uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) - 1;
+               uv_cpu_hub_info(cpu)->pnode_mask = pnode_mask;
                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;
@@ -631,6 +647,17 @@ void __init uv_system_init(void)
                        lcpu, blade);
        }
 
+       /* Add blade/pnode info for nodes without cpus */
+       for_each_online_node(nid) {
+               if (uv_node_to_blade[nid] >= 0)
+                       continue;
+               paddr = node_start_pfn(nid) << PAGE_SHIFT;
+               paddr = uv_soc_phys_ram_to_gpa(paddr);
+               pnode = (paddr >> m_val) & pnode_mask;
+               blade = boot_pnode_to_blade(pnode);
+               uv_node_to_blade[nid] = blade;
+       }
+
        map_gru_high(max_pnode);
        map_mmr_high(max_pnode);
        map_config_high(max_pnode);