pcie_write_cmd(9)

🎀 NAME 🎀

okay so bestie, this is pcie_write_cmd(9) from the Kernel API Manual, and the function is pcie_write_cmd — its whole job is to issue controller command. Lowkey iconic, highkey useful 💖✨

✨ SYNOPSIS ✨

The exact signature, no cap — keep it character-for-character:

void pcie_write_cmd (struct controller *ctrl , u16 cmd , u16 mask );

🌸 ARGUMENTS 🌸

• ctrl — the controller you’re issuing the command to 🫶
• cmd — the command value that gets written to the slot control register 🎀
• mask — the bitmask of the slot control register that’s being modified ✨

🦋 SEE ALSO 🦋

If you’re doing the classic “one more manpage” spiral (relatable), here’s the kernel file and the whole friend group:

• Kernel file: ./drivers/pci/hotplug/pciehp_hpc.c
• pciehp_check_link_active(9)
• pciehp_card_present(9)
• pciehp_card_present_or_link_active(9)
• pciehp_set_indicators(9)
• pciehp_slot_reset(9)

okay bye bestie — source/version: ./drivers/pci/hotplug, date: October 2026. This pcie_write_cmd(9) page ate and left no crumbs 💅💋