x86: Move the 64-bit Intel specific parts out of setup_64.c

Create a separate intel_64.c file in the cpu/ dir for
the useful parts to live in.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

2 files changed, 98 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index ef065c1a2e1a..b7a11924fed7 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_X86_32)	+= cyrix.o
 obj-$(CONFIG_X86_32)    += centaur.o
 obj-$(CONFIG_X86_32)    += transmeta.o
 obj-$(CONFIG_X86_32)    += intel.o
+obj-$(CONFIG_X86_64)    += intel_64.o
 obj-$(CONFIG_X86_32)    += umc.o
 
 obj-$(CONFIG_X86_MCE)   += mcheck/
diff --git a/arch/x86/kernel/cpu/intel_64.c b/arch/x86/kernel/cpu/intel_64.c
new file mode 100644
index 000000000000..e5f929f6c3d4
--- /dev/null
+++ b/arch/x86/kernel/cpu/intel_64.c
@@ -0,0 +1,97 @@
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <asm/processor.h>
+#include <asm/ptrace.h>
+#include <asm/topology.h>
+#include <asm/numa_64.h>
+
+void __cpuinit early_init_intel(struct cpuinfo_x86 *c)
+{
+        if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
+            (c->x86 == 0x6 && c->x86_model >= 0x0e))
+                set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+}
+
+/*
+ * find out the number of processor cores on the die
+ */
+static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c)
+{
+        unsigned int eax, t;
+
+        if (c->cpuid_level < 4)
+                return 1;
+
+        cpuid_count(4, 0, &eax, &t, &t, &t);
+
+        if (eax & 0x1f)
+                return ((eax >> 26) + 1);
+        else
+                return 1;
+}
+
+static void __cpuinit srat_detect_node(void)
+{
+#ifdef CONFIG_NUMA
+        unsigned node;
+        int cpu = smp_processor_id();
+        int apicid = hard_smp_processor_id();
+
+        /* Don't do the funky fallback heuristics the AMD version employs
+           for now. */
+        node = apicid_to_node[apicid];
+        if (node == NUMA_NO_NODE || !node_online(node))
+                node = first_node(node_online_map);
+        numa_set_node(cpu, node);
+
+        printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node);
+#endif
+}
+
+void __cpuinit init_intel(struct cpuinfo_x86 *c)
+{
+        /* Cache sizes */
+        unsigned n;
+
+        init_intel_cacheinfo(c);
+        if (c->cpuid_level > 9) {
+                unsigned eax = cpuid_eax(10);
+                /* Check for version and the number of counters */
+                if ((eax & 0xff) && (((eax>>8) & 0xff) > 1))
+                        set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON);
+        }
+
+        if (cpu_has_ds) {
+                unsigned int l1, l2;
+                rdmsr(MSR_IA32_MISC_ENABLE, l1, l2);
+                if (!(l1 & (1<<11)))
+                        set_cpu_cap(c, X86_FEATURE_BTS);
+                if (!(l1 & (1<<12)))
+                        set_cpu_cap(c, X86_FEATURE_PEBS);
+        }
+
+
+        if (cpu_has_bts)
+                ds_init_intel(c);
+
+        n = c->extended_cpuid_level;
+        if (n >= 0x80000008) {
+                unsigned eax = cpuid_eax(0x80000008);
+                c->x86_virt_bits = (eax >> 8) & 0xff;
+                c->x86_phys_bits = eax & 0xff;
+                /* CPUID workaround for Intel 0F34 CPU */
+                if (c->x86_vendor == X86_VENDOR_INTEL &&
+                    c->x86 == 0xF && c->x86_model == 0x3 &&
+                    c->x86_mask == 0x4)
+                        c->x86_phys_bits = 36;
+        }
+
+        if (c->x86 == 15)
+                c->x86_cache_alignment = c->x86_clflush_size * 2;
+        if (c->x86 == 6)
+                set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+        set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
+        c->x86_max_cores = intel_num_cpu_cores(c);
+
+        srat_detect_node();
+}