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pci_decode: add <iommu> node to devices

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genodelabs/genode#5002
This commit is contained in:
Johannes Schlatow
2023-09-08 13:28:56 +02:00
parent e816020346
commit 7c5b59556a
1 changed files with 29 additions and 0 deletions
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29
repos/os/src/app/pci_decode/main.cc
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@@ -244,6 +244,35 @@ bus_t Main::parse_pci_function(Bdf bdf,
gen.attribute("size", rmrr.size);
});
});
/* XXX We currently only support unsegmented platforms with a single
* pci config space. Yet as soon as we do support those, we
* must assign the DMA-remapping hardware unit to the different pci
* segments resp. their devices.
*/
bool drhd_device_found = false;
drhd_list.for_each([&] (Drhd const & drhd) {
if (drhd_device_found) return;
bool device_match = false;
drhd.devices.for_each([&] (Drhd::Device const & device) {
if (device.bdf == bdf)
device_match = true;
});
if (device_match) {
drhd_device_found = true;
gen.node("io_mmu", [&] { gen.attribute("name", drhd.name()); });
}
});
if (!drhd_device_found) {
drhd_list.for_each([&] (Drhd const & drhd) {
if (drhd.scope == Drhd::Scope::INCLUDE_PCI_ALL)
gen.node("io_mmu", [&] { gen.attribute("name", drhd.name()); });
});
}
});
return subordinate_bus;