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-rw-r--r--include/asm-ppc/io.h58
1 files changed, 57 insertions, 1 deletions
diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h
index 11dfa1c..91c9c1e 100644
--- a/include/asm-ppc/io.h
+++ b/include/asm-ppc/io.h
@@ -121,13 +121,43 @@ static inline void isync(void)
#define iobarrier_w() eieio()
/*
+ * Non ordered and non-swapping "raw" accessors
+ */
+#define __iomem
+#define PCI_FIX_ADDR(addr) (addr)
+
+static inline unsigned char __raw_readb(const volatile void __iomem *addr)
+{
+ return *(volatile unsigned char *)PCI_FIX_ADDR(addr);
+}
+static inline unsigned short __raw_readw(const volatile void __iomem *addr)
+{
+ return *(volatile unsigned short *)PCI_FIX_ADDR(addr);
+}
+static inline unsigned int __raw_readl(const volatile void __iomem *addr)
+{
+ return *(volatile unsigned int *)PCI_FIX_ADDR(addr);
+}
+static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
+{
+ *(volatile unsigned char *)PCI_FIX_ADDR(addr) = v;
+}
+static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
+{
+ *(volatile unsigned short *)PCI_FIX_ADDR(addr) = v;
+}
+static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
+{
+ *(volatile unsigned int *)PCI_FIX_ADDR(addr) = v;
+}
+
+/*
* 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
*
* Read operations have additional twi & isync to make sure the read
* is actually performed (i.e. the data has come back) before we start
* executing any following instructions.
*/
-#define __iomem
extern inline int in_8(const volatile unsigned char __iomem *addr)
{
int ret;
@@ -208,4 +238,30 @@ extern inline void out_be32(volatile unsigned __iomem *addr, int val)
__asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
}
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+typedef unsigned long phys_addr_t;
+
+#define MAP_NOCACHE (0)
+#define MAP_WRCOMBINE (0)
+#define MAP_WRBACK (0)
+#define MAP_WRTHROUGH (0)
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
+{
+ return (void *)paddr;
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
+{
+
+}
+
#endif