I've updated pciutils so it can work on PowerPC Macs running Mac OS X. It works on all Macs running Mac OS X 10.4 to macOS 13. I haven't tested on Apple Silicon Macs - that may require some changes if it can work. The only Power Mac I've tested it on so far is my Power Mac Quad G5. That one required adding endian swap for the U4 HT Bridge device. It might have issues on a Power Mac 8600 with the /chaos PCI controller since I've had issues with that from my "lspci for Open Firmware" code.
https://gist.github.com/joevt/e3cd4ff08aae06279134969c98ca3ab7
https://github.com/joevt/directhw
https://github.com/joevt/pciutils
https://gist.github.com/joevt/e3cd4ff08aae06279134969c98ca3ab7
https://github.com/joevt/directhw
https://github.com/joevt/pciutils
