x86: move generic_processor_info to apic_32.c

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / apic_32.c

diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 65036bbaf0589df0dee76ce5b976ffb8614e95ab..a99398f712343bcc2b8740d2ec94321b2ba3ea5e 100644 (file)
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -1469,6 +1469,88 @@ void disconnect_bsp_APIC(int virt_wire_setup)
        }
 }
 
+unsigned int __cpuinitdata maxcpus = NR_CPUS;
+
+void __cpuinit generic_processor_info(int apicid, int version)
+{
+       int cpu;
+       cpumask_t tmp_map;
+       physid_mask_t phys_cpu;
+
+       /*
+        * Validate version
+        */
+       if (version == 0x0) {
+               printk(KERN_WARNING "BIOS bug, APIC version is 0 for CPU#%d! "
+                               "fixing up to 0x10. (tell your hw vendor)\n",
+                               version);
+               version = 0x10;
+       }
+       apic_version[apicid] = version;
+
+       phys_cpu = apicid_to_cpu_present(apicid);
+       physids_or(phys_cpu_present_map, phys_cpu_present_map, phys_cpu);
+
+       if (num_processors >= NR_CPUS) {
+               printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."
+                       "  Processor ignored.\n", NR_CPUS);
+               return;
+       }
+
+       if (num_processors >= maxcpus) {
+               printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
+                       " Processor ignored.\n", maxcpus);
+               return;
+       }
+
+       num_processors++;
+       cpus_complement(tmp_map, cpu_present_map);
+       cpu = first_cpu(tmp_map);
+
+       if (apicid == boot_cpu_physical_apicid)
+               /*
+                * x86_bios_cpu_apicid is required to have processors listed
+                * in same order as logical cpu numbers. Hence the first
+                * entry is BSP, and so on.
+                */
+               cpu = 0;
+
+       /*
+        * Would be preferable to switch to bigsmp when CONFIG_HOTPLUG_CPU=y
+        * but we need to work other dependencies like SMP_SUSPEND etc
+        * before this can be done without some confusion.
+        * if (CPU_HOTPLUG_ENABLED || num_processors > 8)
+        *       - Ashok Raj <ashok.raj@intel.com>
+        */
+       if (num_processors > 8) {
+               switch (boot_cpu_data.x86_vendor) {
+               case X86_VENDOR_INTEL:
+                       if (!APIC_XAPIC(version)) {
+                               def_to_bigsmp = 0;
+                               break;
+                       }
+                       /* If P4 and above fall through */
+               case X86_VENDOR_AMD:
+                       def_to_bigsmp = 1;
+               }
+       }
+#ifdef CONFIG_SMP
+       /* are we being called early in kernel startup? */
+       if (x86_cpu_to_apicid_early_ptr) {
+               u16 *cpu_to_apicid = x86_cpu_to_apicid_early_ptr;
+               u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr;
+
+               cpu_to_apicid[cpu] = apicid;
+               bios_cpu_apicid[cpu] = apicid;
+       } else {
+               per_cpu(x86_cpu_to_apicid, cpu) = apicid;
+               per_cpu(x86_bios_cpu_apicid, cpu) = apicid;
+       }
+#endif
+       cpu_set(cpu, cpu_possible_map);
+       cpu_set(cpu, cpu_present_map);
+}
+
 /*
  * Power management
  */