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-rw-r--r--include/asm-powerpc/io.h59
1 files changed, 43 insertions, 16 deletions
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 89189488e286..8b627823f5f9 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -95,33 +95,60 @@ extern resource_size_t isa_mem_base;
#define IO_SET_SYNC_FLAG()
#endif
-#define DEF_MMIO_IN(name, type, insn) \
-static inline type name(const volatile type __iomem *addr) \
+/* gcc 4.0 and older doesn't have 'Z' constraint */
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ == 0)
+#define DEF_MMIO_IN_LE(name, size, insn) \
+static inline u##size name(const volatile u##size __iomem *addr) \
{ \
- type ret; \
- __asm__ __volatile__("sync;" insn ";twi 0,%0,0;isync" \
+ u##size ret; \
+ __asm__ __volatile__("sync;"#insn" %0,0,%1;twi 0,%0,0;isync" \
: "=r" (ret) : "r" (addr), "m" (*addr) : "memory"); \
return ret; \
}
-#define DEF_MMIO_OUT(name, type, insn) \
-static inline void name(volatile type __iomem *addr, type val) \
+#define DEF_MMIO_OUT_LE(name, size, insn) \
+static inline void name(volatile u##size __iomem *addr, u##size val) \
{ \
- __asm__ __volatile__("sync;" insn \
+ __asm__ __volatile__("sync;"#insn" %1,0,%2" \
: "=m" (*addr) : "r" (val), "r" (addr) : "memory"); \
IO_SET_SYNC_FLAG(); \
}
+#else /* newer gcc */
+#define DEF_MMIO_IN_LE(name, size, insn) \
+static inline u##size name(const volatile u##size __iomem *addr) \
+{ \
+ u##size ret; \
+ __asm__ __volatile__("sync;"#insn" %0,%y1;twi 0,%0,0;isync" \
+ : "=r" (ret) : "Z" (*addr) : "memory"); \
+ return ret; \
+}
+
+#define DEF_MMIO_OUT_LE(name, size, insn) \
+static inline void name(volatile u##size __iomem *addr, u##size val) \
+{ \
+ __asm__ __volatile__("sync;"#insn" %1,%y0" \
+ : "=Z" (*addr) : "r" (val) : "memory"); \
+ IO_SET_SYNC_FLAG(); \
+}
+#endif
+#define DEF_MMIO_IN_BE(name, size, insn) \
+static inline u##size name(const volatile u##size __iomem *addr) \
+{ \
+ u##size ret; \
+ __asm__ __volatile__("sync;"#insn"%U1%X1 %0,%1;twi 0,%0,0;isync"\
+ : "=r" (ret) : "m" (*addr) : "memory"); \
+ return ret; \
+}
-#define DEF_MMIO_IN_BE(name, size, insn) \
- DEF_MMIO_IN(name, u##size, __stringify(insn)"%U2%X2 %0,%2")
-#define DEF_MMIO_IN_LE(name, size, insn) \
- DEF_MMIO_IN(name, u##size, __stringify(insn)" %0,0,%1")
+#define DEF_MMIO_OUT_BE(name, size, insn) \
+static inline void name(volatile u##size __iomem *addr, u##size val) \
+{ \
+ __asm__ __volatile__("sync;"#insn"%U0%X0 %1,%0" \
+ : "=m" (*addr) : "r" (val) : "memory"); \
+ IO_SET_SYNC_FLAG(); \
+}
-#define DEF_MMIO_OUT_BE(name, size, insn) \
- DEF_MMIO_OUT(name, u##size, __stringify(insn)"%U0%X0 %1,%0")
-#define DEF_MMIO_OUT_LE(name, size, insn) \
- DEF_MMIO_OUT(name, u##size, __stringify(insn)" %1,0,%2")
DEF_MMIO_IN_BE(in_8, 8, lbz);
DEF_MMIO_IN_BE(in_be16, 16, lhz);
@@ -745,7 +772,7 @@ static inline void * bus_to_virt(unsigned long address)
#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
-#define clrsetbits_le16(addr, clear, set) clrsetbits(le32, addr, clear, set)
+#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)