Merge branch 'bugzilla-11715' into test

[sfrench/cifs-2.6.git] / arch / x86 / kernel / early-quirks.c

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 24bb5faf5efaefedcb578d4f4f27415a015833c7..3ce029ffaa55b2085ef4de993b427f86a3cdfdb7 100644 (file)
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -95,6 +95,99 @@ static void __init nvidia_bugs(int num, int slot, int func)
 
 }
 
+#if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
+static u32 __init ati_ixp4x0_rev(int num, int slot, int func)
+{
+       u32 d;
+       u8  b;
+
+       b = read_pci_config_byte(num, slot, func, 0xac);
+       b &= ~(1<<5);
+       write_pci_config_byte(num, slot, func, 0xac, b);
+
+       d = read_pci_config(num, slot, func, 0x70);
+       d |= 1<<8;
+       write_pci_config(num, slot, func, 0x70, d);
+
+       d = read_pci_config(num, slot, func, 0x8);
+       d &= 0xff;
+       return d;
+}
+
+static void __init ati_bugs(int num, int slot, int func)
+{
+       u32 d;
+       u8  b;
+
+       if (acpi_use_timer_override)
+               return;
+
+       d = ati_ixp4x0_rev(num, slot, func);
+       if (d  < 0x82)
+               acpi_skip_timer_override = 1;
+       else {
+               /* check for IRQ0 interrupt swap */
+               outb(0x72, 0xcd6); b = inb(0xcd7);
+               if (!(b & 0x2))
+                       acpi_skip_timer_override = 1;
+       }
+
+       if (acpi_skip_timer_override) {
+               printk(KERN_INFO "SB4X0 revision 0x%x\n", d);
+               printk(KERN_INFO "Ignoring ACPI timer override.\n");
+               printk(KERN_INFO "If you got timer trouble "
+                      "try acpi_use_timer_override\n");
+       }
+}
+
+static u32 __init ati_sbx00_rev(int num, int slot, int func)
+{
+       u32 old, d;
+
+       d = read_pci_config(num, slot, func, 0x70);
+       old = d;
+       d &= ~(1<<8);
+       write_pci_config(num, slot, func, 0x70, d);
+       d = read_pci_config(num, slot, func, 0x8);
+       d &= 0xff;
+       write_pci_config(num, slot, func, 0x70, old);
+
+       return d;
+}
+
+static void __init ati_bugs_contd(int num, int slot, int func)
+{
+       u32 d, rev;
+
+       if (acpi_use_timer_override)
+               return;
+
+       rev = ati_sbx00_rev(num, slot, func);
+       if (rev > 0x13)
+               return;
+
+       /* check for IRQ0 interrupt swap */
+       d = read_pci_config(num, slot, func, 0x64);
+       if (!(d & (1<<14)))
+               acpi_skip_timer_override = 1;
+
+       if (acpi_skip_timer_override) {
+               printk(KERN_INFO "SB600 revision 0x%x\n", rev);
+               printk(KERN_INFO "Ignoring ACPI timer override.\n");
+               printk(KERN_INFO "If you got timer trouble "
+                      "try acpi_use_timer_override\n");
+       }
+}
+#else
+static void __init ati_bugs(int num, int slot, int func)
+{
+}
+
+static void __init ati_bugs_contd(int num, int slot, int func)
+{
+}
+#endif
+
 #ifdef CONFIG_DMAR
 static void __init intel_g33_dmar(int num, int slot, int func)
 {
@@ -128,6 +221,10 @@ static struct chipset early_qrk[] __initdata = {
          PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, via_bugs },
        { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB,
          PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config },
+       { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS,
+         PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs },
+       { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
+         PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs_contd },
 #ifdef CONFIG_DMAR
        { PCI_VENDOR_ID_INTEL, 0x29c0,
          PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, intel_g33_dmar },