arch/tile/include/hv/syscall_public.h

   1 /*
   2  * Copyright 2010 Tilera Corporation. All Rights Reserved.
   3  *
   4  *   This program is free software; you can redistribute it and/or
   5  *   modify it under the terms of the GNU General Public License
   6  *   as published by the Free Software Foundation, version 2.
   7  *
   8  *   This program is distributed in the hope that it will be useful, but
   9  *   WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  11  *   NON INFRINGEMENT.  See the GNU General Public License for
  12  *   more details.
  13  */
  14
  15 /**
  16  * @file syscall.h
  17  * Indices for the hypervisor system calls that are intended to be called
  18  * directly, rather than only through hypervisor-generated "glue" code.
  19  */
  20
  21 #ifndef _SYS_HV_INCLUDE_SYSCALL_PUBLIC_H
  22 #define _SYS_HV_INCLUDE_SYSCALL_PUBLIC_H
  23
  24 /** Fast syscall flag bit location.  When this bit is set, the hypervisor
  25  *  handles the syscall specially.
  26  */
  27 #define HV_SYS_FAST_SHIFT                 14
  28
  29 /** Fast syscall flag bit mask. */
  30 #define HV_SYS_FAST_MASK                  (1 << HV_SYS_FAST_SHIFT)
  31
  32 /** Bit location for flagging fast syscalls that can be called from PL0. */
  33 #define HV_SYS_FAST_PLO_SHIFT             13
  34
  35 /** Fast syscall allowing PL0 bit mask. */
  36 #define HV_SYS_FAST_PL0_MASK              (1 << HV_SYS_FAST_PLO_SHIFT)
  37
  38 /** Perform an MF that waits for all victims to reach DRAM. */
  39 #define HV_SYS_fence_incoherent         (51 | HV_SYS_FAST_MASK \
  40                                        | HV_SYS_FAST_PL0_MASK)
  41
  42 #endif /* !_SYS_HV_INCLUDE_SYSCALL_PUBLIC_H */