amdgpu_devi...irect_wreg64(9)

✨ amdgpu_devi...irect_wreg64(9) ✨

okay so this is a page straight out of the Kernel API Manual (yes, the kernel has its own manual, she's iconic) and today's main character is amdgpu_device_indirect_wreg64 💅

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🎀 NAME 🎀

amdgpu_device_indirect_wreg64 — write a 64bits indirect register address ✨

Like, that's literally the whole job. She writes a 64-bit indirect register address. No cap. 🫶

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🌸 SYNOPSIS 🌸

void amdgpu_device_indirect_wreg64 (struct amdgpu_device *adev , u32 reg_addr , u64 reg_data );

that's the whole signature bestie, she's lowkey elegant about it 🦋

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💖 ARGUMENTS 💖

• adev — amdgpu_device pointer 👑 this is your ticket to the GPU's whole vibe, you literally cannot do anything without her
• reg_addr — indirect register offset 📍 where you're pointing, the address part of the situation
• reg_data — indirect register data 🍓 the actual 64-bit payload you're yeeting in there

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🌈 SEE ALSO 🌈

the whole friend group fr fr, they all hang out in the kernel file:

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_reg_access.c — that's home base, where the code actually lives 💀
• amdgpu_device_rreg(9)
• amdgpu_mm_rreg8(9)
• amdgpu_device_xcc_rreg(9)
• amdgpu_mm_wreg8(9)
• amdgpu_device_wreg(9)
• amdgpu_mm_wreg_mmio_rlc(9)
• amdgpu_device_xcc_wreg(9)
• amdgpu_device_indirect_rreg(9)
• amdgpu_device_indirect_rreg64(9)
• amdgpu_device_indirect_wreg(9)

ok like not me listing the entire squad 😭 every single one of them, no skips, we don't leave anyone out of the group chat 💜

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heads up bestie: this is the 64-bit indirect write — read those SEE ALSO entries before you go poking registers, iykyk 🙈

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and that's the page!! brought to you by ./drivers/gpu/drm/amd/amdgpu (the source, periodt), dated October 2026, filed under amdgpu_devi...irect_wreg64(9) — slay, go write some registers responsibly 🧚‍♀️⭐