iceland_ih_irq_init(9)

💅 iceland_ih_irq_init(9) — init & enable the interrupt ring

okay so bestie, welcome to the Kernel API Manual, section 9, and today's main character is iceland_ih_irq_init — the little function that gets the interrupt ring up and running. it's giving "setup queen" energy and honestly? iconic. 🎀

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✨ SYNOPSIS ✨

int iceland_ih_irq_init (struct amdgpu_device *adev );

literally the whole signature, no cap. it takes one thing and gives you back an int — we love a simple relationship. 🫶

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🌸 ARGUMENTS 🌸

• adev — an amdgpu_device pointer. that's it, that's the whole argument list, she travels light. 💅

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🦋 DESCRIPTION 🦋

so here's the vibe check: this function initialises and enables the interrupt ring. the glow-up happens in this order, bestie, don't skip steps:

1. allocate a ring buffer for the interrupt controller 🔥
2. enable the RLC
3. disable interrupts
4. enable the IH ring buffer and enable it (VI) ✨

it gets called at device load and reume. yes, reume. that's how it's spelled on the page, i'm not fixing it, i'm just the messenger 😭

returns 0 for success, and errors for failure. so like — if you get 0, slay. if not, something's not slaying. 💀

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👑 SEE ALSO 👑

kernel file ./drivers/gpu/drm/amd/amdgpu/iceland_ih.c — go read the source, iykyk 📖

• iceland_ih_enable_interrupts(9)
• iceland_ih_disable_interrupts(9)
• iceland_ih_irq_disable(9)
• iceland_ih_get_wptr(9)
• iceland_ih_decode_iv(9)
• iceland_ih_set_rptr(9)

the whole interrupt squad, fr fr. go say hi to all of them. 🌈

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mwah 💖 this page came to you from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, section 9 of the Kernel API Manual — thanks for reading, bestie, go init some rings responsibly ✨🧚