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| author | Shameer Kolothum <skolothumtho@nvidia.com> | 2025-08-29 09:25:25 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2025-09-16 17:31:54 +0100 |
| commit | 01e9a18730e6f56f713ed074603a8b0f2982ed26 (patch) | |
| tree | 37b82d50b58dcb26a898d6448244845d2089598d /scripts/lib/kdoc/kdoc_parser.py | |
| parent | 0e6a5bfb0eb17f57fb923b7905bd1435204bdd62 (diff) | |
| download | qemu-01e9a18730e6f56f713ed074603a8b0f2982ed26.zip qemu-01e9a18730e6f56f713ed074603a8b0f2982ed26.tar.gz qemu-01e9a18730e6f56f713ed074603a8b0f2982ed26.tar.bz2 | |
hw/arm/virt-acpi-build: Update IORT for multiple smmuv3 devices
With the soon to be introduced user-creatable SMMUv3 devices for
virt, it is possible to have multiple SMMUv3 devices associated
with different PCIe root complexes.
Update IORT nodes accordingly.
An example IORT Id mappings for a Qemu virt machine with two
PCIe Root Complexes each assocaited with a SMMUv3 will
be something like below,
-device arm-smmuv3,primary-bus=pcie.0,id=smmuv3.0
-device arm-smmuv3,primary-bus=pcie.1,id=smmuv3.1
...
+--------------------+ +--------------------+
| Root Complex 0 | | Root Complex 1 |
| | | |
| Requestor IDs | | Requestor IDs |
| 0x0000 - 0x00FF | | 0x0100 - 0x01FF |
+---------+----------+ +---------+----------+
| |
| |
| Stream ID Mapping |
v v
+--------------------+ +--------------------+
| SMMUv3 Node 0 | | SMMUv3 Node 1 |
| | | |
| Stream IDs 0x0000- | | Stream IDs 0x0100- |
| 0x00FF mapped from | | 0x01FF mapped from |
| RC0 Requestor IDs | | RC1 Requestor IDs |
+--------------------+ +--------------------+
| |
| |
+----------------+---------------+
|
|Device ID Mapping
v
+----------------------------+
| ITS Node 0 |
| |
| Device IDs: |
| 0x0000 - 0x00FF (from RC0) |
| 0x0100 - 0x01FF (from RC1) |
| 0x0200 - 0xFFFF (No SMMU) |
+----------------------------+
Tested-by: Nathan Chen <nathanc@nvidia.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Signed-off-by: Shameer Kolothum <skolothumtho@nvidia.com>
Reviewed-by: Donald Dutile <ddutile@redhat.com>
Message-id: 20250829082543.7680-4-skolothumtho@nvidia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'scripts/lib/kdoc/kdoc_parser.py')
0 files changed, 0 insertions, 0 deletions