intel_huc_fw_upload(9)

💖 intel_huc_fw_upload(9) 💖

okay so bestie, welcome to the Kernel API Manual page for intel_huc_fw_upload — yes it’s giving “firmware glow-up” energy, and we’re gonna read it together. No cap. 🫶

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✨ NAME ✨

intel_huc_fw_upload — load HuC uCode to device via DMA transfer 💅

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🌸 SYNOPSIS 🌸

int intel_huc_fw_upload (struct intel_huc *huc );

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🎀 ARGUMENTS 🎀

• huc — the intel_huc structure, aka the main character of this function’s story 👑

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🦋 DESCRIPTION 🦋

So like, this gets called from intel_uc_init_hw during driver load, resume from sleep and after a GPU reset. Three whole moments. Iconic. 🌈

Important vibe check: HuC must be loaded before GuC. That’s the rule, bestie — HuC first, GuC second, periodt. 💅

The firmware image should have already been fetched into memory, so this function only checks that the fetch succeeded, and then transfers the image to the h/w. Literally just a little “did it work? okay slay, send it” moment. ✨

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🔥 RETURN 🔥

non-zero code on error. That’s it. If something goes wrong, you get a non-zero code, and you can be like “not me getting an error 😭”.

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🌟 SEE ALSO 🌟

Kernel file ./drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c — go read it if you want the full lore. iykyk. 🧚

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cute sign-off: this whole page comes from the source/version ./drivers/gpu/drm/i915/gt/uc, dated October 2026, and it’s all about intel_huc_fw_upload(9). bye bestie, drink water and load your firmware in the right order 💜🦋