rw_mmr.h 944 B

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  1. /*
  2. * This file is subject to the terms and conditions of the GNU General Public
  3. * License. See the file "COPYING" in the main directory of this archive
  4. * for more details.
  5. *
  6. * Copyright (C) 2002-2006 Silicon Graphics, Inc. All Rights Reserved.
  7. */
  8. #ifndef _ASM_IA64_SN_RW_MMR_H
  9. #define _ASM_IA64_SN_RW_MMR_H
  10. /*
  11. * This file that access MMRs via uncached physical addresses.
  12. * pio_phys_read_mmr - read an MMR
  13. * pio_phys_write_mmr - write an MMR
  14. * pio_atomic_phys_write_mmrs - atomically write 1 or 2 MMRs with psr.ic=0
  15. * Second MMR will be skipped if address is NULL
  16. *
  17. * Addresses passed to these routines should be uncached physical addresses
  18. * ie., 0x80000....
  19. */
  20. extern long pio_phys_read_mmr(volatile long *mmr);
  21. extern void pio_phys_write_mmr(volatile long *mmr, long val);
  22. extern void pio_atomic_phys_write_mmrs(volatile long *mmr1, long val1, volatile long *mmr2, long val2);
  23. #endif /* _ASM_IA64_SN_RW_MMR_H */