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2025-09-19kern: pci: Implement PCI leaf drivers + AHCI stubIan Moffett
This commit introduces the support for having PCI specific device drivers while providing a tiny AHCI stub that logs the existence of the host bus adapter. The PCI bus itself has a driver for enumerating the devices and associating a specific driver to it, the device drivers themselve must advertise themselves to the PCI driver. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-09-19kernel: pci: Add PCI lookup routineIan Moffett
This commit adds a new 'lookup_type_t' for representing the various kinds of lookups one can perform on the PCI bus. The actual code to drive the lookups is exposed as the pci_bus_lookup() routine. When doing a lookup of a PCI device, you must specify the kind of lookup to perform. If a PCI_LU_CLASSREV is requested, only the PCI class and subclass fields in the PCI lookup are used. If the PCI_LU_VENDEV is requested, only the PCI vendor ID and device ID are used in the lookup. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-09-19kern: pci: Add 'class' and 'subclass' to deviceIan Moffett
This commit adds the PCI class and revion (subclass) IDs to the PCI device descriptor provided by L5. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-09-18kern: pci: Implement device list as TAILQIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-09-18kern: pci: Add initial bus enumerationIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-09-18kern: io: Add initial PCI CAM driverIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>