X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fx86%2Fkernel%2Fgenapic_64.c;h=6c9bfc9e1e95cbc5f8aa2273bd06f9eb75c2ca11;hb=40874491f9e9a4cb08eaf663dbe018bf5671975a;hp=47496a40e84f5526d332398d1a2e895f74bb8484;hpb=250c22777fe1ccd7ac588579a6c16db4c0161cc5;p=safe%2Fjmp%2Flinux-2.6

diff --git a/arch/x86/kernel/genapic_64.c b/arch/x86/kernel/genapic_64.c
index 47496a4..6c9bfc9 100644
--- a/arch/x86/kernel/genapic_64.c
+++ b/arch/x86/kernel/genapic_64.c
@@ -15,52 +15,64 @@
 #include <linux/kernel.h>
 #include <linux/ctype.h>
 #include <linux/init.h>
+#include <linux/hardirq.h>
+#include <linux/dmar.h>
 
 #include <asm/smp.h>
 #include <asm/ipi.h>
 #include <asm/genapic.h>
 
-#ifdef CONFIG_ACPI
-#include <acpi/acpi_bus.h>
-#endif
-
-/* which logical CPU number maps to which CPU (physical APIC ID) */
-u8 x86_cpu_to_apicid[NR_CPUS] __read_mostly
-					= { [0 ... NR_CPUS-1] = BAD_APICID };
-EXPORT_SYMBOL(x86_cpu_to_apicid);
-
-u8 x86_cpu_to_log_apicid[NR_CPUS]	= { [0 ... NR_CPUS-1] = BAD_APICID };
+extern struct genapic apic_flat;
+extern struct genapic apic_physflat;
+extern struct genapic apic_x2xpic_uv_x;
+extern struct genapic apic_x2apic_phys;
+extern struct genapic apic_x2apic_cluster;
 
 struct genapic __read_mostly *genapic = &apic_flat;
 
+static struct genapic *apic_probe[] __initdata = {
+	&apic_x2apic_uv_x,
+	&apic_x2apic_phys,
+	&apic_x2apic_cluster,
+	&apic_physflat,
+	NULL,
+};
+
 /*
  * Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
  */
 void __init setup_apic_routing(void)
 {
-#ifdef CONFIG_ACPI
-	/*
-	 * Quirk: some x86_64 machines can only use physical APIC mode
-	 * regardless of how many processors are present (x86_64 ES7000
-	 * is an example).
-	 */
-	if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID &&
-			(acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL))
-		genapic = &apic_physflat;
-	else
-#endif
-
-	if (cpus_weight(cpu_possible_map) <= 8)
-		genapic = &apic_flat;
-	else
-		genapic = &apic_physflat;
+	if (genapic == &apic_x2apic_phys || genapic == &apic_x2apic_cluster) {
+		if (!intr_remapping_enabled)
+			genapic = &apic_flat;
+	}
 
-	printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name);
+	if (genapic == &apic_flat) {
+		if (max_physical_apicid >= 8)
+			genapic = &apic_physflat;
+		printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name);
+	}
 }
 
 /* Same for both flat and physical. */
 
-void send_IPI_self(int vector)
+void apic_send_IPI_self(int vector)
 {
 	__send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
 }
+
+int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	int i;
+
+	for (i = 0; apic_probe[i]; ++i) {
+		if (apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id)) {
+			genapic = apic_probe[i];
+			printk(KERN_INFO "Setting APIC routing to %s.\n",
+				genapic->name);
+			return 1;
+		}
+	}
+	return 0;
+}