Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
  [POWERPC] Add memchr() to the bootwrapper
  [POWERPC] Implement logging of unhandled signals
  [POWERPC] Add legacy serial support for OPB with flattened device tree
  [POWERPC] Use 1TB segments
  [POWERPC] XilinxFB: Allow fixed framebuffer base address
  [POWERPC] XilinxFB: Add support for custom screen resolution
  [POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
  [POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
  [POWERPC] 4xx: Kilauea defconfig file
  [POWERPC] 4xx: Kilauea DTS
  [POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
  [POWERPC] 4xx: Add AMCC 405EX support to cputable.c
  [POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
  [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
  [POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
  [POWERPC] 85xx: Killed <asm/mpc85xx.h>
  [POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
  [POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
  [POWERPC] mpc8272ads: Remove muram from the CPM reg property.
  [POWERPC] Make clockevents work on PPC601 processors
  ...

Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.

1 files changed, 49 insertions, 0 deletions

diff --git a/arch/powerpc/boot/io.h b/arch/powerpc/boot/io.h
index 32974ed49e0..ccaedaec50d 100644
--- a/arch/powerpc/boot/io.h
+++ b/arch/powerpc/boot/io.h
@@ -1,5 +1,8 @@
 #ifndef _IO_H
 #define __IO_H
+
+#include "types.h"
+
 /*
  * Low-level I/O routines.
  *
@@ -20,6 +23,37 @@ static inline void out_8(volatile unsigned char *addr, int val)
                              : "=m" (*addr) : "r" (val));
 }
 
+static inline unsigned in_le16(const volatile u16 *addr)
+{
+        unsigned ret;
+
+        __asm__ __volatile__("lhbrx %0,0,%1; twi 0,%0,0; isync"
+                             : "=r" (ret) : "r" (addr), "m" (*addr));
+
+        return ret;
+}
+
+static inline unsigned in_be16(const volatile u16 *addr)
+{
+        unsigned ret;
+
+        __asm__ __volatile__("lhz%U1%X1 %0,%1; twi 0,%0,0; isync"
+                             : "=r" (ret) : "m" (*addr));
+        return ret;
+}
+
+static inline void out_le16(volatile u16 *addr, int val)
+{
+        __asm__ __volatile__("sthbrx %1,0,%2; sync" : "=m" (*addr)
+                             : "r" (val), "r" (addr));
+}
+
+static inline void out_be16(volatile u16 *addr, int val)
+{
+        __asm__ __volatile__("sth%U0%X0 %1,%0; sync"
+                             : "=m" (*addr) : "r" (val));
+}
+
 static inline unsigned in_le32(const volatile unsigned *addr)
 {
         unsigned ret;
@@ -50,4 +84,19 @@ static inline void out_be32(volatile unsigned *addr, int val)
                              : "=m" (*addr) : "r" (val));
 }
 
+static inline void sync(void)
+{
+        asm volatile("sync" : : : "memory");
+}
+
+static inline void eieio(void)
+{
+        asm volatile("eieio" : : : "memory");
+}
+
+static inline void barrier(void)
+{
+        asm volatile("" : : : "memory");
+}
+
 #endif /* _IO_H */