Headers: move arch_*.h to urcu/arch/*.h

[urcu.git] / urcu / arch / ppc.h

diff --git a/urcu/arch/ppc.h b/urcu/arch/ppc.h
new file mode 100644 (file)
index 0000000..d7317bb
--- /dev/null
+++ b/urcu/arch/ppc.h
@@ -0,0 +1,73 @@
+#ifndef _URCU_ARCH_PPC_H
+#define _URCU_ARCH_PPC_H
+
+/*
+ * arch_ppc.h: trivial definitions for the powerpc architecture.
+ *
+ * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
+ * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <urcu/compiler.h>
+#include <urcu/config.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+/* Include size of POWER5+ L3 cache lines: 256 bytes */
+#define CAA_CACHE_LINE_SIZE    256
+
+#define cmm_mb()    asm volatile("sync":::"memory")
+
+#define mftbl()                                                \
+       ({                                              \
+               unsigned long rval;                     \
+               asm volatile("mftbl %0" : "=r" (rval)); \
+               rval;                                   \
+       })
+
+#define mftbu()                                                \
+       ({                                              \
+               unsigned long rval;                     \
+               asm volatile("mftbu %0" : "=r" (rval)); \
+               rval;                                   \
+       })
+
+typedef unsigned long long cycles_t;
+
+static inline cycles_t caa_get_cycles (void)
+{
+       long h, l;
+
+       for (;;) {
+               h = mftbu();
+               cmm_barrier();
+               l = mftbl();
+               cmm_barrier();
+               if (mftbu() == h)
+                       return (((cycles_t) h) << 32) + l;
+       }
+}
+
+#ifdef __cplusplus 
+}
+#endif
+
+#include <urcu/arch/generic.h>
+
+#endif /* _URCU_ARCH_PPC_H */