implement get_cpu_clock() for s390/s390x

[fio.git] / arch / arch-ppc.h

diff --git a/arch/arch-ppc.h b/arch/arch-ppc.h
index 4d7710520dc06574c64f74793551d85842cd4b8b..e73093df86f5f25ed68c44e4e3662d1ab3210891 100644 (file)
--- a/arch/arch-ppc.h
+++ b/arch/arch-ppc.h
@@ -1,7 +1,7 @@
 #ifndef ARCH_PPC_H
 #define ARCH_PPH_H
 
-#define ARCH   (arch_ppc)
+#define FIO_ARCH       (arch_ppc)
 
 #ifndef __NR_ioprio_set
 #define __NR_ioprio_set                273
@@ -21,11 +21,52 @@
 #define nop    do { } while (0)
 
 #ifdef __powerpc64__
-#define read_barrier() \
-       __asm__ __volatile__ ("lwsync" : : : "memory")
+#define read_barrier() __asm__ __volatile__ ("lwsync" : : : "memory")
 #else
-#define read_barrier() \
-       __asm__ __volatile__ ("sync" : : : "memory")
+#define read_barrier() __asm__ __volatile__ ("sync" : : : "memory")
 #endif
 
+#define write_barrier()        __asm__ __volatile__ ("sync" : : : "memory")
+
+static inline int __ilog2(unsigned long bitmask)
+{
+       int lz;
+
+       asm ("cntlzw %0,%1" : "=r" (lz) : "r" (bitmask));
+       return 31 - lz;
+}
+
+static inline int arch_ffz(unsigned long bitmask)
+{
+       if ((bitmask = ~bitmask) == 0)
+               return 32;
+       return  __ilog2(bitmask & -bitmask);
+}
+
+static inline unsigned long long get_cpu_clock(void)
+{
+       unsigned int tbl, tbu0, tbu1;
+       unsigned long long ret;
+
+       do {
+               __asm__ __volatile__ ("mftbu %0" : "=r"(tbu0));
+               __asm__ __volatile__ ("mftb %0"  : "=r"(tbl) );
+               __asm__ __volatile__ ("mftbu %0" : "=r"(tbu1));
+       } while (tbu0 != tbu1);
+
+       ret = (((unsigned long long)tbu0) << 32) | tbl;
+       return ret;
+}
+
+#define ARCH_HAVE_INIT
+extern int tsc_reliable;
+static inline int arch_init(char *envp[])
+{
+       tsc_reliable = 1;
+       return 0;
+}
+
+#define ARCH_HAVE_FFZ
+#define ARCH_HAVE_CPU_CLOCK
+
 #endif