X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fi386%2Fkernel%2Facpi%2Fearlyquirk.c;h=1649a175a206ab4bd6ed0add0040580ff83d036e;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=726a5ca4b1655c6449f8c56377e7cc6ca8f604ce;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/i386/kernel/acpi/earlyquirk.c b/arch/i386/kernel/acpi/earlyquirk.c
index 726a5ca4b..1649a175a 100644
--- a/arch/i386/kernel/acpi/earlyquirk.c
+++ b/arch/i386/kernel/acpi/earlyquirk.c
@@ -5,47 +5,72 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/acpi.h>
+
 #include <asm/pci-direct.h>
 #include <asm/acpi.h>
+#include <asm/apic.h>
+
+#ifdef CONFIG_ACPI
+
+static int nvidia_hpet_detected __initdata;
+
+static int __init nvidia_hpet_check(unsigned long phys, unsigned long size)
+{
+	nvidia_hpet_detected = 1;
+	return 0;
+}
+#endif
 
-static int __init check_bridge(int vendor, int device) 
+static int __init check_bridge(int vendor, int device)
 {
-	/* According to Nvidia all timer overrides are bogus. Just ignore
-	   them all. */
-	if (vendor == PCI_VENDOR_ID_NVIDIA) { 
-		acpi_skip_timer_override = 1; 		
+#ifdef CONFIG_ACPI
+	/* According to Nvidia all timer overrides are bogus unless HPET
+	   is enabled. */
+	if (vendor == PCI_VENDOR_ID_NVIDIA) {
+		nvidia_hpet_detected = 0;
+		acpi_table_parse(ACPI_HPET, nvidia_hpet_check);
+		if (nvidia_hpet_detected == 0) {
+			acpi_skip_timer_override = 1;
+		}
+	}
+#endif
+	if (vendor == PCI_VENDOR_ID_ATI && timer_over_8254 == 1) {
+		timer_over_8254 = 0;
+		printk(KERN_INFO "ATI board detected. Disabling timer routing "
+				"over 8254.\n");
 	}
 	return 0;
 }
-   
-void __init check_acpi_pci(void) 
-{ 
-	int num,slot,func; 
+
+void __init check_acpi_pci(void)
+{
+	int num, slot, func;
 
 	/* Assume the machine supports type 1. If not it will 
 	   always read ffffffff and should not have any side effect. */
 
 	/* Poor man's PCI discovery */
-	for (num = 0; num < 32; num++) { 
-		for (slot = 0; slot < 32; slot++) { 
-			for (func = 0; func < 8; func++) { 
+	for (num = 0; num < 32; num++) {
+		for (slot = 0; slot < 32; slot++) {
+			for (func = 0; func < 8; func++) {
 				u32 class;
 				u32 vendor;
-				class = read_pci_config(num,slot,func,
+				class = read_pci_config(num, slot, func,
 							PCI_CLASS_REVISION);
 				if (class == 0xffffffff)
-					break; 
+					break;
 
 				if ((class >> 16) != PCI_CLASS_BRIDGE_PCI)
-					continue; 
-				
-				vendor = read_pci_config(num, slot, func, 
+					continue;
+
+				vendor = read_pci_config(num, slot, func,
 							 PCI_VENDOR_ID);
-				
-				if (check_bridge(vendor&0xffff, vendor >> 16))
-					return; 
-			} 
-			
+
+				if (check_bridge(vendor & 0xffff, vendor >> 16))
+					return;
+			}
+
 		}
 	}
 }