From 1f85d74ac542d57559babbe0525633837e9fd52f Mon Sep 17 00:00:00 2001 From: Jean-Philippe Brucker Date: Tue, 26 Oct 2021 19:20:20 +0100 Subject: 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 Tested-by: Eric Auger Signed-off-by: Jean-Philippe Brucker Message-Id: <20211026182024.2642038-2-jean-philippe@linaro.org> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/acpi/viot.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 hw/acpi/viot.h (limited to 'hw/acpi/viot.h') diff --git a/hw/acpi/viot.h b/hw/acpi/viot.h new file mode 100644 index 0000000000..9fe565bb87 --- /dev/null +++ b/hw/acpi/viot.h @@ -0,0 +1,13 @@ +/* + * 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 */ -- cgit 1.4.1