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kernel/linux-rt-4.4.41/arch/tile/include/hv/syscall_public.h 1.52 KB
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  /*
   * Copyright 2010 Tilera Corporation. All Rights Reserved.
   *
   *   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, version 2.
   *
   *   This program 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, GOOD TITLE or
   *   NON INFRINGEMENT.  See the GNU General Public License for
   *   more details.
   */
  
  /**
   * @file syscall.h
   * Indices for the hypervisor system calls that are intended to be called
   * directly, rather than only through hypervisor-generated "glue" code.
   */
  
  #ifndef _SYS_HV_INCLUDE_SYSCALL_PUBLIC_H
  #define _SYS_HV_INCLUDE_SYSCALL_PUBLIC_H
  
  /** Fast syscall flag bit location.  When this bit is set, the hypervisor
   *  handles the syscall specially.
   */
  #define HV_SYS_FAST_SHIFT                 14
  
  /** Fast syscall flag bit mask. */
  #define HV_SYS_FAST_MASK                  (1 << HV_SYS_FAST_SHIFT)
  
  /** Bit location for flagging fast syscalls that can be called from PL0. */
  #define HV_SYS_FAST_PLO_SHIFT             13
  
  /** Fast syscall allowing PL0 bit mask. */
  #define HV_SYS_FAST_PL0_MASK              (1 << HV_SYS_FAST_PLO_SHIFT)
  
  /** Perform an MF that waits for all victims to reach DRAM. */
  #define HV_SYS_fence_incoherent         (51 | HV_SYS_FAST_MASK \
                                         | HV_SYS_FAST_PL0_MASK)
  
  #endif /* !_SYS_HV_INCLUDE_SYSCALL_PUBLIC_H */