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/*
* Linux 2.6.32 and later Kernel module for VMware MVP Hypervisor Support
*
* Copyright (C) 2010-2012 VMware, Inc. 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 version 2 as published by
* the Free Software Foundation.
*
* 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. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#line 5
/**
* @file
*
* @brief bus-atomic operators.
*
* The 'atm' argument is the atomic memory cell being operated on and the
* remainder of the arguments are the values being applied to the atomic cell
* which is assumed to be located in shared normal memory. The operation is
* both atomic and visible to the default share-ability domain upon completion.
*
* The design of each macro is such that the compiler should check types
* correctly. For those macros that return a value, the return type should be
* the same as the 'atm' argument (with the exception of ATOMIC_SETIF which
* returns an int value of 0 or 1).
*
* Those names ending in 'M' return the modified value of 'atm'.
* Those names ending in 'O' return the original value of 'atm'.
* Those names ending in 'V' return void (ie, nothing).
*/
#ifndef _ATOMIC_H
#define _ATOMIC_H
#define INCLUDE_ALLOW_MVPD
#define INCLUDE_ALLOW_VMX
#define INCLUDE_ALLOW_MODULE
#define INCLUDE_ALLOW_MONITOR
#define INCLUDE_ALLOW_PV
#define INCLUDE_ALLOW_GPL
#define INCLUDE_ALLOW_HOSTUSER
#define INCLUDE_ALLOW_GUESTUSER
#include "include_check.h"
/*
* Wrap type 't' in an atomic struct.
* Eg, 'static ATOMIC(uint8) counter;'.
*
* The function macros use the atm_Normal member to clone the atom's type
* when the volatile semantic is not required. They use the atm_Volatl member
* when the volatile semantic is required.
*/
#define ATOMIC(t) union { t atm_Normal; t volatile atm_Volatl; }
/*
* Static atomic variable initialization.
* Eg, 'static ATOMIC(uint8) counter = ATOMIC_INI(35);'.
*/
#define ATOMIC_INI(v) { .atm_Normal = v }
/*
* Some commonly used atomic types.
*/
typedef ATOMIC(int32) AtmSInt32 __attribute__ ((aligned (4)));
typedef ATOMIC(uint32) AtmUInt32 __attribute__ ((aligned (4)));
typedef ATOMIC(uint64) AtmUInt64 __attribute__ ((aligned (8)));
/*
* Architecture-dependent implementations.
*/
#if defined(__COVERITY__)
#include "atomic_coverity.h"
#elif defined(__arm__)
#include "atomic_arm.h"
#elif defined(__i386) || defined(__x86_64)
#include "atomic_x86.h"
#endif
#endif
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