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/*

 * msi.h

 *

 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>

 *                    VA Linux Systems Japan K.K.

 *

 * 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; either version 2 of the License, or

 * (at your option) any later version.

 * 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; if not, see <http://www.gnu.org/licenses/>.

 */

#ifndef QEMU_MSI_H

#define QEMU_MSI_H

#include "qemu-common.h"

#include "hw/pci/pci.h"

struct MSIMessage {

    uint64_t address;

    uint32_t data;

};

extern bool msi_supported;

void msi_set_message(PCIDevice *dev, MSIMessage msg);

MSIMessage msi_get_message(PCIDevice *dev, unsigned int vector);

bool msi_enabled(const PCIDevice *dev);

int msi_init(struct PCIDevice *dev, uint8_t offset,

             unsigned int nr_vectors, bool msi64bit, bool msi_per_vector_mask);

void msi_uninit(struct PCIDevice *dev);

void msi_reset(PCIDevice *dev);

void msi_notify(PCIDevice *dev, unsigned int vector);

void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len);

unsigned int msi_nr_vectors_allocated(const PCIDevice *dev);

static inline bool msi_present(const PCIDevice *dev)

{

    return dev->cap_present & QEMU_PCI_CAP_MSI;

}

#endif /* QEMU_MSI_H */