qemu/hw/acpi/viot.h
Jean-Philippe Brucker 1f85d74ac5 hw/acpi: Add VIOT table
Add a function that generates a Virtual I/O Translation table (VIOT),
describing the topology of paravirtual IOMMUs. The table is created if a
virtio-iommu device is present. It contains a virtio-iommu node and PCI
Range nodes for endpoints managed by the IOMMU. By default, a single
node describes all PCI devices. When passing the
"default_bus_bypass_iommu" machine option and "bypass_iommu" PXB option,
only buses that do not bypass the IOMMU are described by PCI Range
nodes.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Message-Id: <20211026182024.2642038-2-jean-philippe@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-11-01 18:49:10 -04:00

14 lines
340 B
C

/*
* ACPI Virtual I/O Translation Table implementation
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef VIOT_H
#define VIOT_H
void build_viot(MachineState *ms, GArray *table_data, BIOSLinker *linker,
uint16_t virtio_iommu_bdf, const char *oem_id,
const char *oem_table_id);
#endif /* VIOT_H */