irq_setup_generic_chip(9)

💅 irq_setup_generic_chip(9) — from the Kernel API Manual, bestie

okay so picture this: it's a kernel API manual page, it's called irq_setup_generic_chip(9), and it's here to help you set up a whole range of interrupts with one generic chip. no cap. let's get into it 🎀

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✨ NAME ✨

irq_setup_generic_chip — setup a range of interrupts with a generic chip. literally that's the whole job description 💖

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🌸 SYNOPSIS 🌸

void irq_setup_generic_chip (struct irq_chip_generic *gc , u32 msk ,
       enum irq_gc_flags flags , unsigned int clr , unsigned int set );

like, five arguments, one function, zero drama 🦋

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🧚 ARGUMENTS 🧚

• gc — the generic irq chip that's holding all the data. it's the main character here, it has everything 👑
• msk — a bitmask holding the irqs to initialize, and those are relative to gc->irq_base (iykyk 👀)
• flags — flags for initialization. the vibe-setters, basically ✨
• clr — the IRQ_* bits to clear 🧹
• set — the IRQ_* bits to set ✅

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💫 DESCRIPTION 💫

So it sets up a maximum of 32 interrupts, starting from gc->irq_base. Slay.

Heads up though, bestie: this initializes all interrupts to the primary irq_chip_type and its associated handler. that's not a side note, that's the whole situation 💀

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🔥 SEE ALSO 🔥

the kernel file ./kernel/irq/generic-chip.c and honestly a whole friend group of functions:

• irq_gc_noop(9)
• irq_gc_mask_disable_reg(9)
• irq_gc_mask_set_bit(9)
• irq_gc_mask_clr_bit(9)
• irq_gc_unmask_enable_reg(9)
• irq_gc_ack_set_bit(9)
• irq_gc_ack_clr_bit(9)
• irq_gc_mask_disable_and_ack_set(9)
• irq_gc_eoi(9)
• irq_gc_set_wake(9)
• irq_alloc_generic_chip(9)
• irq_domain_alloc_generic_chips(9)
• irq_domain_remove_generic_chips(9)
• __irq_alloc_domain_generic_chips(9)
• irq_get_domain_generic_chip(9)
• irq_setup_alt_chip(9)
• irq_remove_generic_chip(9)

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and that's the page, periodt 💅 sign-off time: this one lives in ./kernel/irq, it's dated October 2026, and it came straight out of the Kernel API Manual. go set up some interrupts, you gorgeous genius 🫶🌸