X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fi386%2Fmach-generic%2Fprobe.c;h=d55fa7b187ab656f9c581b11c5dfc12f7186f82e;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=fdb25423c9111a5f9103f13409ed8635c8e5d6c7;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/i386/mach-generic/probe.c b/arch/i386/mach-generic/probe.c
index fdb25423c..d55fa7b18 100644
--- a/arch/i386/mach-generic/probe.c
+++ b/arch/i386/mach-generic/probe.c
@@ -17,6 +17,7 @@
 
 extern struct genapic apic_summit;
 extern struct genapic apic_bigsmp;
+extern struct genapic apic_es7000;
 extern struct genapic apic_default;
 
 struct genapic *genapic = &apic_default;
@@ -24,10 +25,30 @@ struct genapic *genapic = &apic_default;
 struct genapic *apic_probe[] __initdata = { 
 	&apic_summit,
 	&apic_bigsmp, 
+	&apic_es7000,
 	&apic_default,	/* must be last */
 	NULL,
 };
 
+static int cmdline_apic;
+
+void __init generic_bigsmp_probe(void)
+{
+	/*
+	 * This routine is used to switch to bigsmp mode when
+	 * - There is no apic= option specified by the user
+	 * - generic_apic_probe() has choosen apic_default as the sub_arch
+	 * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support
+	 */
+
+	if (!cmdline_apic && genapic == &apic_default)
+		if (apic_bigsmp.probe()) {
+			genapic = &apic_bigsmp;
+			printk(KERN_INFO "Overriding APIC driver with %s\n",
+			       genapic->name);
+		}
+}
+
 void __init generic_apic_probe(char *command_line) 
 { 
 	char *s;
@@ -50,6 +71,7 @@ void __init generic_apic_probe(char *command_line)
 		if (!changed)
 			printk(KERN_ERR "Unknown genapic `%s' specified.\n", s);
 		*p = old;
+		cmdline_apic = changed;
 	} 
 	for (i = 0; !changed && apic_probe[i]; i++) { 
 		if (apic_probe[i]->probe()) {
@@ -71,9 +93,11 @@ int __init mps_oem_check(struct mp_config_table *mpc, char *oem, char *productid
 	int i;
 	for (i = 0; apic_probe[i]; ++i) { 
 		if (apic_probe[i]->mps_oem_check(mpc,oem,productid)) { 
-			genapic = apic_probe[i];
-			printk(KERN_INFO "Switched to APIC driver `%s'.\n", 
-			       genapic->name);
+			if (!cmdline_apic) {
+				genapic = apic_probe[i];
+				printk(KERN_INFO "Switched to APIC driver `%s'.\n",
+				       genapic->name);
+			}
 			return 1;
 		} 
 	} 
@@ -85,9 +109,11 @@ 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 "Switched to APIC driver `%s'.\n", 
-			       genapic->name);
+			if (!cmdline_apic) {
+				genapic = apic_probe[i];
+				printk(KERN_INFO "Switched to APIC driver `%s'.\n",
+				       genapic->name);
+			}
 			return 1;
 		} 
 	}