LXR qemu/hw/pci/msi.h

   1/*
   2 * msi.h
   3 *
   4 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
   5 *                    VA Linux Systems Japan K.K.
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16
  17 * You should have received a copy of the GNU General Public License along
  18 * with this program; if not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21#ifndef QEMU_MSI_H
  22#define QEMU_MSI_H
  23
  24#include "qemu-common.h"
  25#include "hw/pci/pci.h"
  26
  27struct MSIMessage {
  28    uint64_t address;
  29    uint32_t data;
  30};
  31
  32extern bool msi_supported;
  33
  34void msi_set_message(PCIDevice *dev, MSIMessage msg);
  35MSIMessage msi_get_message(PCIDevice *dev, unsigned int vector);
  36bool msi_enabled(const PCIDevice *dev);
  37int msi_init(struct PCIDevice *dev, uint8_t offset,
  38             unsigned int nr_vectors, bool msi64bit, bool msi_per_vector_mask);
  39void msi_uninit(struct PCIDevice *dev);
  40void msi_reset(PCIDevice *dev);
  41void msi_notify(PCIDevice *dev, unsigned int vector);
  42void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len);
  43unsigned int msi_nr_vectors_allocated(const PCIDevice *dev);
  44
  45static inline bool msi_present(const PCIDevice *dev)
  46{
  47    return dev->cap_present & QEMU_PCI_CAP_MSI;
  48}
  49
  50#endif /* QEMU_MSI_H */
  51