/** @file
* MSI - Message signalled interrupts support.
*/
/*
* Copyright (C) 2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___VBox_msi_h
#define ___VBox_msi_h
/* Constants for Intel APIC MSI messages */
#define VBOX_MSI_DATA_VECTOR_SHIFT 0
/**
* MSI region, actually same as LAPIC MMIO region, but listens on bus,
* not CPU, accesses.
*/
/* dedicated cpu */
/* lowest priority */
/* Offsets in MSI PCI capability structure (VBOX_PCI_CAP_ID_MSI) */
/* We implement MSI with per-vector masking */
/**
* MSI-X different from MSI by the fact that dedicated physical page
* (in device memory) is assigned for MSI-X table, and Pending Bit Array (PBA),
* which is recommended to be separated from the main table by at least 2K.
*/
/* Size of a MSI-X page */
/* Pending interrupts (PBA) */
/* Size of MSI-X PCI capability */
/* Offsets in MSI-X PCI capability structure (VBOX_PCI_CAP_ID_MSIX) */
/* Size of single MSI-X table entry */
#endif