STRUCT IRQ_CHIP_TYPE(9)

💅 struct irq_chip_type(9) — like, the whole vibe

okay bestie, welcome to the Kernel API Manual entry for struct irq_chip_type(9) — yes the (9) is part of the name, she's a section-9 girlie, we respect it 🎀

This is the generic interrupt chip instance for a flow type. Say that five times fast. Or don't, honestly, just keep reading 💖

---

✨ NAME ✨

struct irq_chip_type — generic interrupt chip instance for a flow type, no cap.

---

🦋 SYNOPSIS 🦋

struct irq_chip_type {
    struct irq_chip         chip;
    struct irq_chip_regs    regs;
    irq_flow_handler_t handler;
    u32 type;
    u32 mask_cache_priv;
    u32 *mask_cache;
 };

yes there's a little space before the closing brace, leave her alone, she's doing her best 😭 copy it exactly, character for character, fr fr.

---

👑 Members 👑

okay so this is the cast of characters, and honestly every single one of them is a main character:

• chip — the real interrupt chip, the one that actually provides the callbacks. she's the one doing the work while everyone else is like, standing there looking pretty 💅
• regs — register offsets for this chip. the map, the coordinates, the little address book 📍
• handler — the flow handler associated with this chip. she handles the flow, literally 🌊
• type — the flow types this chip can handle. like, her type. her literal type. get it? 🫶
• mask_cache_priv — cached mask register, private to the chip type. private! personal! don't touch her stuff 🙈
• mask_cache — a pointer to the cached mask register. not the register itself, a pointer to it. important distinction bestie, do not come for me ⭐

---

🌸 Description 🌸

so here's the tea: an irq_generic_chip can have several instances of irq_chip_type when it needs different functions and different register offsets for different flow types.

like, she's versatile. she contains multitudes. one generic chip, many chip types, each one serving a different flow type with its own functions and its own register offsets — it's giving "I contain multitudes" energy and honestly? obsessed ✨

no cap, this is the whole reason this struct exists — variety is the spice of interrupts 🌈

---

🔥 SEE ALSO 🔥

go read these next, bestie, iykyk:

• Kernel file ./include/linux/irq.h
• struct irq_common_data(9)
• struct irq_data(9)
• struct irq_chip(9)
• struct irq_chip_regs(9)
• struct irq_chip_generic(9)
• enum irq_gc_flags(9)
• struct irq_domain_chip_generic_info(9)

---

and that's the whole page, periodt 💜 this one lives in ./include/linux and the version you're looking at is dated October 2026 — shoutout to the kernel docs girlies keeping the API manual cute and current, mwah 🫶💖