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
msi_present(const PCIDevice * dev)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