ENUM RZG3S_PCIE_CONTROLLER_ID(9)

💅 enum rzg3s_pcie_controller_id 💅

okay so bestie, this page lives in the Kernel API Manual and it's giving "tiny header file that punches way above its weight" energy. It's literally just an enum — enum rzg3s_pcie_controller_id — and its whole personality is naming the RZ/G3S PCIe controller IDs so nobody has to write cursed magic numbers in the driver. no cap. ✨

---

🌸 SYNOPSIS 🌸

like, this is the whole thing, she's small but she's iconic:

enum rzg3s_pcie_controller_id {
    RZG3S_PCIE_CONTROLLER_ID_0 ,
    RZG3S_PCIE_CONTROLLER_ID_1 ,
    RZG3S_PCIE_CONTROLLER_ID_MAX

};

yes the trailing spaces and the blank line before the closing brace are canon, we don't touch the source 💅

---

🎀 Constants 🎀

bestie these are the three members, that's the whole squad:

• RZG3S_PCIE_CONTROLLER_ID_0 — PCIe controller 0 🥇 the main character, first in line
• RZG3S_PCIE_CONTROLLER_ID_1 — PCIe controller 1 🌈 the second one, also valid, also slaying
• RZG3S_PCIE_CONTROLLER_ID_MAX — Max PCIe controllers 👑 the sentinel bestie at the end, it's giving "this is how many we got", not an actual controller, ok? do not index with this one 🙈

fr fr, RZG3S_PCIE_CONTROLLER_ID_MAX is the upper boundary vibe, not a real controller ID. treat it like the fence at the end of the garden, not a flowerbed.

---

🦋 SEE ALSO 🦋

the whole friend group, all defined in the kernel file ./drivers/pci/controller/pcie-rzg3s-host.c as an enum:

• rzg3s_sysc_link_mode(9)
• struct rzg3s_sysc_function(9)
• enum rzg3s_sysc_func_id(9)
• struct rzg3s_sysc_info(9)
• struct rzg3s_sysc(9)
• struct rzg3s_pcie_msi(9)
• struct rzg3s_pcie_soc_data(9)
• struct rzg3s_pcie_port(9)
• struct rzg3s_pcie_host(9)

go read them, iykyk 💖

---

okay that's the whole page, she's short and she ate 🍓 this came out of ./drivers/pci/controller, October 2026 era, filed under the Kernel API Manual — and you got the whole enum rzg3s_pcie_controller_id(9) tea in one sitting. mwah 💋 🧚‍♀️