Merge branch 'osc' into release

[pandora-kernel.git] / arch / arm / mach-footbridge / common.c

diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 36ff06d..41febc7 100644 (file)
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -28,12 +28,17 @@
 
 #include "common.h"
 
-extern void __init isa_init_irq(unsigned int irq);
-
 unsigned int mem_fclk_21285 = 50000000;
 
 EXPORT_SYMBOL(mem_fclk_21285);
 
+static void __init early_fclk(char **arg)
+{
+       mem_fclk_21285 = simple_strtoul(*arg, arg, 0);
+}
+
+__early_param("mem_fclk_21285=", early_fclk);
+
 static int __init parse_tag_memclk(const struct tag *tag)
 {
        mem_fclk_21285 = tag->u.memclk.fmemclk;
@@ -196,6 +201,11 @@ void __init footbridge_map_io(void)
 
 #ifdef CONFIG_FOOTBRIDGE_ADDIN
 
+static inline unsigned long fb_bus_sdram_offset(void)
+{
+       return *CSR_PCISDRAMBASE & 0xfffffff0;
+}
+
 /*
  * These two functions convert virtual addresses to PCI addresses and PCI
  * addresses to virtual addresses.  Note that it is only legal to use these
@@ -205,14 +215,13 @@ unsigned long __virt_to_bus(unsigned long res)
 {
        WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory);
 
-       return (res - PAGE_OFFSET) + (*CSR_PCISDRAMBASE & 0xfffffff0);
+       return res + (fb_bus_sdram_offset() - PAGE_OFFSET);
 }
 EXPORT_SYMBOL(__virt_to_bus);
 
 unsigned long __bus_to_virt(unsigned long res)
 {
-       res -= (*CSR_PCISDRAMBASE & 0xfffffff0);
-       res += PAGE_OFFSET;
+       res = res - (fb_bus_sdram_offset() - PAGE_OFFSET);
 
        WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory);
 
@@ -220,4 +229,16 @@ unsigned long __bus_to_virt(unsigned long res)
 }
 EXPORT_SYMBOL(__bus_to_virt);
 
+unsigned long __pfn_to_bus(unsigned long pfn)
+{
+       return __pfn_to_phys(pfn) + (fb_bus_sdram_offset() - PHYS_OFFSET));
+}
+EXPORT_SYMBOL(__pfn_to_bus);
+
+unsigned long __bus_to_pfn(unsigned long bus)
+{
+       return __phys_to_pfn(bus - (fb_bus_sdram_offset() - PHYS_OFFSET));
+}
+EXPORT_SYMBOL(__bus_to_pfn);
+
 #endif