tonga_ih_irq_init(9)

💖 tonga_ih_irq_init 💖

okay so welcome to the Kernel API Manual bestie, today we're looking at tonga_ih_irq_init(9) — the interrupt ring's glow-up era ✨

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🌸 NAME 🌸

tonga_ih_irq_init — init and enable the interrupt ring, no cap 🎀

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✨ SYNOPSIS ✨

int tonga_ih_irq_init (struct amdgpu_device *adev );

like, it takes exactly one thing and gives you back an int, that's the whole vibe 💅

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🦋 ARGUMENTS 🦋

• adev — an amdgpu_device pointer. that's it. that's the argument. she's carrying the whole device in her bag 🫶

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🔥 DESCRIPTION 🔥

so here's the tea ☕ — this function allocates a ring buffer for the interrupt controller, enables the RLC, disables interrupts, then enables the IH ring buffer and enables it (VI). literally the full get-ready-with-me routine 💖

she gets called at device load and reume (yes that's how it's spelled in the source, love her anyway 😭). returns 0 for success, and errors for failure — so check your return value, bestie, don't just ignore it 🙈

🎀 nothing in this one is deprecated or dangerous, she's just doing her ring-buffer admin and minding her business

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👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/amd/amdgpu/tonga_ih.c
• tonga_ih_enable_interrupts(9)
• tonga_ih_disable_interrupts(9)
• tonga_ih_irq_disable(9)
• tonga_ih_get_wptr(9)
• tonga_ih_decode_iv(9)
• tonga_ih_set_rptr(9)

the whole tonga_ih friend group, they all link up, iykyk 🌈

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and that's the page!! 🧚 this one lives under ./drivers/gpu/drm/amd/amdgpu, dated October 2026, in the Kernel API Manual — mwah, slay, periodt 💅⭐💜