x86: make generic arch support NUMAQ

... so it could fall back to normal numa and we'd reduce the impact of the
NUMAQ subarch.

NUMAQ depends on GENERICARCH
also decouple genericarch numa from acpi.
also make it fall back to bigsmp if apicid > 8.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 70 insertions, 3 deletions

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 7591325e616d..1cc7a4b8643f 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -49,15 +49,73 @@ static int __init mpf_checksum(unsigned char *mp, int len)
 }
 
 #ifdef CONFIG_X86_NUMAQ
+int found_numaq;
 /*
  * Have to match translation table entries to main table entries by counter
  * hence the mpc_record variable .... can't see a less disgusting way of
  * doing this ....
  */
+struct mpc_config_translation {
+        unsigned char mpc_type;
+        unsigned char trans_len;
+        unsigned char trans_type;
+        unsigned char trans_quad;
+        unsigned char trans_global;
+        unsigned char trans_local;
+        unsigned short trans_reserved;
+};
+
 
 static int mpc_record;
 static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY]
     __cpuinitdata;
+
+static inline int generate_logical_apicid(int quad, int phys_apicid)
+{
+        return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1);
+}
+
+
+static inline int mpc_apic_id(struct mpc_config_processor *m,
+                        struct mpc_config_translation *translation_record)
+{
+        int quad = translation_record->trans_quad;
+        int logical_apicid = generate_logical_apicid(quad, m->mpc_apicid);
+
+        printk(KERN_DEBUG "Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n",
+               m->mpc_apicid,
+               (m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8,
+               (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4,
+               m->mpc_apicver, quad, logical_apicid);
+        return logical_apicid;
+}
+
+int mp_bus_id_to_node[MAX_MP_BUSSES];
+
+int mp_bus_id_to_local[MAX_MP_BUSSES];
+
+static void mpc_oem_bus_info(struct mpc_config_bus *m, char *name,
+        struct mpc_config_translation *translation)
+{
+        int quad = translation->trans_quad;
+        int local = translation->trans_local;
+
+        mp_bus_id_to_node[m->mpc_busid] = quad;
+        mp_bus_id_to_local[m->mpc_busid] = local;
+        printk(KERN_INFO "Bus #%d is %s (node %d)\n",
+               m->mpc_busid, name, quad);
+}
+
+int quad_local_to_mp_bus_id [NR_CPUS/4][4];
+static void mpc_oem_pci_bus(struct mpc_config_bus *m,
+        struct mpc_config_translation *translation)
+{
+        int quad = translation->trans_quad;
+        int local = translation->trans_local;
+
+        quad_local_to_mp_bus_id[quad][local] = m->mpc_busid;
+}
+
 #endif
 
 static void __cpuinit MP_processor_info(struct mpc_config_processor *m)
@@ -321,11 +379,11 @@ static void __init smp_read_mpc_oem(struct mp_config_oemtable *oemtable,
         }
 }
 
-static inline void mps_oem_check(struct mp_config_table *mpc, char *oem,
+void numaq_mps_oem_check(struct mp_config_table *mpc, char *oem,
                                  char *productid)
 {
         if (strncmp(oem, "IBM NUMA", 8))
-                printk("Warning!  May not be a NUMA-Q system!\n");
+                printk("Warning!  Not a NUMA-Q system!\n");
         else
                 found_numaq = 1;
 
@@ -388,7 +446,16 @@ static int __init smp_read_mpc(struct mp_config_table *mpc, unsigned early)
                 return 0;
 
 #ifdef CONFIG_X86_32
-        mps_oem_check(mpc, oem, str);
+        /*
+         * need to make sure summit and es7000's mps_oem_check is safe to be
+         * called early via genericarch 's mps_oem_check
+         */
+        if (early) {
+#ifdef CONFIG_X86_NUMAQ
+                numaq_mps_oem_check(mpc, oem, str);
+#endif
+        } else
+                mps_oem_check(mpc, oem, str);
 #endif
 
         /* save the local APIC address, it might be non-default */