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 "hw/pci/pci_device.h" 25 26 struct MSIMessage { 27 uint64_t address; 28 uint32_t data; 29 }; 30 31 extern bool msi_nonbroken; 32 33 void msi_set_message(PCIDevice *dev, MSIMessage msg); 34 MSIMessage msi_get_message(PCIDevice *dev, unsigned int vector); 35 bool msi_enabled(const PCIDevice *dev); 36 void msi_set_enabled(PCIDevice *dev); 37 int msi_init(struct PCIDevice *dev, uint8_t offset, 38 unsigned int nr_vectors, bool msi64bit, 39 bool msi_per_vector_mask, Error **errp); 40 void msi_uninit(struct PCIDevice *dev); 41 void msi_reset(PCIDevice *dev); 42 bool msi_is_masked(const PCIDevice *dev, unsigned int vector); 43 void msi_notify(PCIDevice *dev, unsigned int vector); 44 void msi_send_message(PCIDevice *dev, MSIMessage msg); 45 void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len); 46 unsigned int msi_nr_vectors_allocated(const PCIDevice *dev); 47 void msi_set_mask(PCIDevice *dev, int vector, bool mask, Error **errp); 48 49 static inline bool msi_present(const PCIDevice *dev) 50 { 51 return dev->cap_present & QEMU_PCI_CAP_MSI; 52 } 53 54 #endif /* QEMU_MSI_H */ 55