38d40ff10f
GICv3 ITS distinguishes between devices by using hardwired device IDs passed on the bus. This patch implements passing these IDs in qemu. SMMU is also known to use stream IDs, therefore this addition can also be useful for implementing platforms with SMMU. Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Changes from v1: - Added bus number to the stream ID - Added stream ID not only to MSI-X, but also to plain MSI. Some common code was made into msi_send_message() function. Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/*
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* msi.h
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*
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* Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QEMU_MSI_H
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#define QEMU_MSI_H
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#include "qemu-common.h"
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#include "hw/pci/pci.h"
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struct MSIMessage {
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uint64_t address;
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uint32_t data;
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};
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extern bool msi_supported;
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void msi_set_message(PCIDevice *dev, MSIMessage msg);
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MSIMessage msi_get_message(PCIDevice *dev, unsigned int vector);
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bool msi_enabled(const PCIDevice *dev);
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int msi_init(struct PCIDevice *dev, uint8_t offset,
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unsigned int nr_vectors, bool msi64bit, bool msi_per_vector_mask);
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void msi_uninit(struct PCIDevice *dev);
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void msi_reset(PCIDevice *dev);
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void msi_notify(PCIDevice *dev, unsigned int vector);
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void msi_send_message(PCIDevice *dev, MSIMessage msg);
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void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len);
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unsigned int msi_nr_vectors_allocated(const PCIDevice *dev);
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static inline bool msi_present(const PCIDevice *dev)
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{
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return dev->cap_present & QEMU_PCI_CAP_MSI;
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}
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#endif /* QEMU_MSI_H */
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