-/*
- * 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.
- */
-extern inline int in_8(volatile unsigned char *addr)
-{
- int ret;
-
- __asm__ __volatile__(
- "lbz%U1%X1 %0,%1;\n"
- "twi 0,%0,0;\n"
- "isync" : "=r" (ret) : "m" (*addr));
- return ret;
-}
-
-extern inline void out_8(volatile unsigned char *addr, int val)
-{
- __asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
-}
-
-extern inline int in_le16(volatile unsigned short *addr)
-{
- int ret;
-
- __asm__ __volatile__("lhbrx %0,0,%1;\n"
- "twi 0,%0,0;\n"
- "isync" : "=r" (ret) :
- "r" (addr), "m" (*addr));
- return ret;
-}
-
-extern inline int in_be16(volatile unsigned short *addr)
-{
- int ret;
-
- __asm__ __volatile__("lhz%U1%X1 %0,%1;\n"
- "twi 0,%0,0;\n"
- "isync" : "=r" (ret) : "m" (*addr));
- return ret;
-}
-
-extern inline void out_le16(volatile unsigned short *addr, int val)
-{
- __asm__ __volatile__("sthbrx %1,0,%2; eieio" : "=m" (*addr) :
- "r" (val), "r" (addr));
-}
-
-extern inline void out_be16(volatile unsigned short *addr, int val)
-{
- __asm__ __volatile__("sth%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
-}
-
-extern inline unsigned in_le32(volatile unsigned *addr)
-{
- unsigned ret;
-
- __asm__ __volatile__("lwbrx %0,0,%1;\n"
- "twi 0,%0,0;\n"
- "isync" : "=r" (ret) :
- "r" (addr), "m" (*addr));
- return ret;
-}
-
-extern inline unsigned in_be32(volatile unsigned *addr)
-{
- unsigned ret;
-
- __asm__ __volatile__("lwz%U1%X1 %0,%1;\n"
- "twi 0,%0,0;\n"
- "isync" : "=r" (ret) : "m" (*addr));
- return ret;
-}
-
-extern inline void out_le32(volatile unsigned *addr, int val)
-{
- __asm__ __volatile__("stwbrx %1,0,%2; eieio" : "=m" (*addr) :
- "r" (val), "r" (addr));
-}
-
-extern inline void out_be32(volatile unsigned *addr, int val)
-{
- __asm__ __volatile__("stw%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
-}
-
-static inline int check_signature(unsigned long io_addr,