radeon_atrm_call(9)

💅 radeon_atrm_call(9) — from the Kernel API Manual, bestie

okay so picture this: you're deep in the kernel, it's giving graphics driver energy, and you need a chunk of the vbios. that's literally this function. welcome to radeon_atrm_call(9) 🎀

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✨ SYNOPSIS ✨

int radeon_atrm_call (acpi_handle atrm_handle , uint8_t *bios , int offset , int len );

she returns an int, she takes four things, she's booked and busy 🫶

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🌸 ARGUMENTS 🌸

• atrm_handle — the ACPI ATRM handle. yeah. that one. 🦋
• bios — pointer to the vbios image. this is where the goods go 💖
• offset — which offset of the vbios image data you wanna fetch, like picking where in the photo dump you start scrolling 🙈
• len — how much vbios image data you're fetching. the length. the vibe check of sizes ⭐

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🔥 DESCRIPTION 🔥

so what she does: she executes ATRM to fetch a chunk of the discrete vbios image on PX systems — and yes, that's on all asics, no exceptions, we love an inclusive icon 👑

and the return? the length of the buffer fetched. periodt. that's the whole flex 💅

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/radeon/radeon_bios.c — go read her, she's iconic
• radeon_acpi_vfct_match(9) — the sibling, the costar, the main character energy 💜

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ngl if you're here you're probably writing or debugging radeon bios code, and honestly? obsessed with your commitment 🧚

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and that's a wrap, bestie 💖 this lil page lives in ./drivers/gpu/drm/radeon, dated October 2026, and it's titled radeon_atrm_call(9) from the Kernel API Manual — slay, go fetch that vbios chunk 🍓✨