1 files changed, 59 insertions, 0 deletions
diff --git a/include/asm-ppc64/memory.h b/include/asm-ppc64/memory.h
new file mode 100644
index 00000000000..56e09face9a
--- /dev/null
+++ b/include/asm-ppc64/memory.h
@@ -0,0 +1,59 @@
+#ifndef _ASM_PPC64_MEMORY_H_ 
+#define _ASM_PPC64_MEMORY_H_ 
+
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/config.h>
+
+/*
+ * Arguably the bitops and *xchg operations don't imply any memory barrier
+ * or SMP ordering, but in fact a lot of drivers expect them to imply
+ * both, since they do on x86 cpus.
+ */
+#ifdef CONFIG_SMP
+#define EIEIO_ON_SMP	"eieio\n"
+#define ISYNC_ON_SMP	"\n\tisync"
+#else
+#define EIEIO_ON_SMP
+#define ISYNC_ON_SMP
+#endif
+
+static inline void eieio(void)
+{
+	__asm__ __volatile__ ("eieio" : : : "memory");
+}
+
+static inline void isync(void)
+{
+	__asm__ __volatile__ ("isync" : : : "memory");
+}
+
+#ifdef CONFIG_SMP
+#define eieio_on_smp()	eieio()
+#define isync_on_smp()	isync()
+#else
+#define eieio_on_smp()	__asm__ __volatile__("": : :"memory")
+#define isync_on_smp()	__asm__ __volatile__("": : :"memory")
+#endif
+
+/* Macros for adjusting thread priority (hardware multi-threading) */
+#define HMT_very_low()    asm volatile("or 31,31,31   # very low priority")
+#define HMT_low()	asm volatile("or 1,1,1		# low priority")
+#define HMT_medium_low()  asm volatile("or 6,6,6      # medium low priority")
+#define HMT_medium()	asm volatile("or 2,2,2		# medium priority")
+#define HMT_medium_high() asm volatile("or 5,5,5      # medium high priority")
+#define HMT_high()	asm volatile("or 3,3,3		# high priority")
+
+#define HMT_VERY_LOW    "\tor   31,31,31        # very low priority\n"
+#define HMT_LOW		"\tor	1,1,1		# low priority\n"
+#define HMT_MEDIUM_LOW  "\tor   6,6,6           # medium low priority\n"
+#define HMT_MEDIUM	"\tor	2,2,2		# medium priority\n"
+#define HMT_MEDIUM_HIGH "\tor   5,5,5           # medium high priority\n"
+#define HMT_HIGH	"\tor	3,3,3		# high priority\n"
+
+#endif