b43: Add LP-PHY firmware loading support

[safe/jmp/linux-2.6] / arch / x86 / kernel / early-quirks.c

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 6b839b1..ebdb85c 100644 (file)
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -17,6 +17,7 @@
 #include <asm/io_apic.h>
 #include <asm/apic.h>
 #include <asm/iommu.h>
+#include <asm/gart.h>
 
 static void __init fix_hypertransport_config(int num, int slot, int func)
 {
@@ -95,7 +96,9 @@ static void __init nvidia_bugs(int num, int slot, int func)
 
 }
 
-static u32 ati_ixp4x0_rev(int num, int slot, int func)
+#if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
+#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;
@@ -112,10 +115,10 @@ static u32 ati_ixp4x0_rev(int num, int slot, int func)
        d &= 0xff;
        return d;
 }
+#endif
 
 static void __init ati_bugs(int num, int slot, int func)
 {
-#if defined(CONFIG_ACPI) && defined (CONFIG_X86_IO_APIC)
        u32 d;
        u8  b;
 
@@ -138,9 +141,56 @@ static void __init ati_bugs(int num, int slot, int func)
                printk(KERN_INFO "If you got timer trouble "
                       "try acpi_use_timer_override\n");
        }
-#endif
 }
 
+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
+
 #define QFLAG_APPLY_ONCE       0x1
 #define QFLAG_APPLIED          0x2
 #define QFLAG_DONE             (QFLAG_APPLY_ONCE|QFLAG_APPLIED)
@@ -153,6 +203,12 @@ struct chipset {
        void (*f)(int num, int slot, int func);
 };
 
+/*
+ * Only works for devices on the root bus. If you add any devices
+ * not on bus 0 readd another loop level in early_quirks(). But
+ * be careful because at least the Nvidia quirk here relies on
+ * only matching on bus 0.
+ */
 static struct chipset early_qrk[] __initdata = {
        { PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
          PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, nvidia_bugs },
@@ -162,6 +218,8 @@ static struct chipset early_qrk[] __initdata = {
          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 },
        {}
 };
 
@@ -217,17 +275,17 @@ static int __init check_dev_quirk(int num, int slot, int func)
 
 void __init early_quirks(void)
 {
-       int num, slot, func;
+       int slot, func;
 
        if (!early_pci_allowed())
                return;
 
        /* Poor man's PCI discovery */
-       for (num = 0; num < 32; num++)
-               for (slot = 0; slot < 32; slot++)
-                       for (func = 0; func < 8; func++) {
-                               /* Only probe function 0 on single fn devices */
-                               if (check_dev_quirk(num, slot, func))
-                                       break;
-                       }
+       /* Only scan the root bus */
+       for (slot = 0; slot < 32; slot++)
+               for (func = 0; func < 8; func++) {
+                       /* Only probe function 0 on single fn devices */
+                       if (check_dev_quirk(0, slot, func))
+                               break;
+               }
 }