xe_uc_fw_get_upload_size(9)

💖 xe_uc_fw_get_upload_size 💖

okay so this is a page from the Kernel API Manual (section 9, kernel-space besties only ✨) and it's literally all about one little function that tells you how much firmware you're about to yeet into WOPCM. short page, big slay 🎀

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✨ NAME ✨

xe_uc_fw_get_upload_size — get the size of the firmware that needs to be uploaded, bestie 💅

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🦋 SYNOPSIS 🦋

u32 xe_uc_fw_get_upload_size (struct xe_uc_fw *uc_fw);

like, it hands you back a u32, and it takes exactly one thing. that's it. that's the whole vibe 🫶

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🌸 ARGUMENTS 🌸

• uc_fw — the uC firmware 💖 (yes that's the actual parameter, yes it's just a struct xe_uc_fw *, yes she's iconic)

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⭐ DESCRIPTION ⭐

so what does it do? it gets you the size of the firmware and the header that will be uploaded to WOPCM 🌈 lowkey that's the whole description, no cap. it's giving "one job, done well" energy 👑

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🔥 RETURN 🔥

• the upload firmware size 🎀 — the happy path, the main character moment, we love to see it
• zero on firmware fetch failure 💀 — not me getting a 0 back, that's your signal that fetching the firmware did not go great 🙈

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💜 SEE ALSO 💜

• Kernel file ./drivers/gpu/drm/xe/xe_uc_fw.h — go read the header bestie, iykyk 📖✨

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ngl this one's tiny but she matters 💅 everything lives in the Xe graphics driver tree and the header above is your bestie for context 🦋

so yeah, that's the whole page 🍓 hope your firmware fetch never returns zero, mwah 💋

source/version: ./drivers/gpu/drm/xe · dated October 2026 — ok that's the sign-off bestie, go touch some registers 💖🧚‍♀️✨