The core code that enumerates, configures, and manages devices on the PCI, PCI-X, and PCI Express buses found in essentially every modern computer. It is the foundation that individual PCI device drivers (network cards, GPUs, NVMe controllers, and so on) plug into, rather than a driver for any single piece of hardware.
This is not actually a driver directory; it is the kernel's PCI subsystem itself, providing bus enumeration, resource allocation, hotplug, power management, and host bridge support that every PCI device driver depends on. Removing or deprecating it is not meaningful — it is core infrastructure underpinning virtually all modern Linux systems.
repository signals
265files
170,432source lines
2,937commits, 5y
+81,215 / −33,926lines added / removed, 5y
508authors, 5y
monthly commits · 2021-04-21 → 2026-04-21 · 2,937 total · active in 61/61 months
sources
No sources cited.
codex reasoning notes (technical)
Not a driver directory: contains PCI core / enumeration / host-side subsystem infrastructure and generic support code, not a single hardware driver implementation.