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#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"

/*

 * Various operational modes for SMT

 * Off    : never run threaded

 * On     : always run threaded

 * Dynamic: Allow the system to switch modes as needed

 */

#define SMT_OFF      0

#define SMT_ON       1

#define SMT_DYNAMIC  2

#endif