Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / arch / arm / mach-ixp2000 / pci.c

diff --git a/arch/arm/mach-ixp2000/pci.c b/arch/arm/mach-ixp2000/pci.c
index 5ff2f27..d4bf1e1 100644 (file)
--- a/arch/arm/mach-ixp2000/pci.c
+++ b/arch/arm/mach-ixp2000/pci.c
@@ -28,7 +28,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/system.h>
-#include <asm/mach-types.h>
 #include <asm/hardware.h>
 
 #include <asm/mach/pci.h>
@@ -149,7 +148,7 @@ int ixp2000_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_re
        local_irq_save(flags);
        temp = *(IXP2000_PCI_CONTROL);
        if (temp & ((1 << 8) | (1 << 5))) {
-               ixp2000_reg_write(IXP2000_PCI_CONTROL, temp);
+               ixp2000_reg_wrb(IXP2000_PCI_CONTROL, temp);
        }
 
        temp = *(IXP2000_PCI_CMDSTAT);
@@ -179,8 +178,8 @@ clear_master_aborts(void)
 
        local_irq_save(flags);
        temp = *(IXP2000_PCI_CONTROL);
-       if (temp & ((1 << 8) | (1 << 5))) {     
-               ixp2000_reg_write(IXP2000_PCI_CONTROL, temp);
+       if (temp & ((1 << 8) | (1 << 5))) {
+               ixp2000_reg_wrb(IXP2000_PCI_CONTROL, temp);
        }
 
        temp = *(IXP2000_PCI_CMDSTAT);
@@ -198,6 +197,19 @@ clear_master_aborts(void)
 void __init
 ixp2000_pci_preinit(void)
 {
+#ifndef CONFIG_IXP2000_SUPPORT_BROKEN_PCI_IO
+       /*
+        * Configure the PCI unit to properly byteswap I/O transactions,
+        * and verify that it worked.
+        */
+       ixp2000_reg_write(IXP2000_PCI_CONTROL,
+                         (*IXP2000_PCI_CONTROL | PCI_CONTROL_IEE));
+
+       if ((*IXP2000_PCI_CONTROL & PCI_CONTROL_IEE) == 0)
+               panic("IXP2000: PCI I/O is broken on this ixp model, and "
+                       "the needed workaround has not been configured in");
+#endif
+
        hook_fault_code(16+6, ixp2000_pci_abort_handler, SIGBUS,
                                "PCI config cycle to non-existent device");
 }