/* * 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 "pci.h" struct MSIMessage { uint64_t address; uint32_t data; }; extern bool msi_supported; void msi_set_message(PCIDevice *dev, MSIMessage msg); 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 */