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platform_drv: document PCI device naming after BDF

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Issue #4812
This commit is contained in:
Christian Helmuth
2023-04-19 16:47:35 +02:00
parent c705bdd6a9
commit 5cb06b5f1c
1 changed files with 6 additions and 0 deletions
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6
repos/os/src/drivers/platform/README
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@ -67,6 +67,12 @@ operate with global names of physical resources.
Policy for PCI devices Policy for PCI devices
---------------------- ----------------------
PCI devices are named according to their bus-device-function triple as
hexadecimal BB:DD.F (see example below). Thus, dedicated devices can easily
be selected by name in policies.
! <device name="00:03.0" type="pci"...>
Policies for PCI devices do not necessarily need to state the name of Policies for PCI devices do not necessarily need to state the name of
the device, but can either state a class of devices, or a vendor/device the device, but can either state a class of devices, or a vendor/device
pair of identifiers inside a pci sub-node: pair of identifiers inside a pci sub-node: