sdma_v5_2_emit_fill_buffer(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v5_2_emit_fill_buffer — from the Kernel API Manual, bestie

okay so bestie, gather round, because today we're talking about sdma_v5_2_emit_fill_buffer — a function living its best life in the Kernel API Manual (section 9, the kernel-API girlies 🎀). This is the "fill buffer using the sDMA engine" one. Yes, that's what it does, and no, that's not the whole story, keep reading 💖

✨ NAME ✨

sdma_v5_2_emit_fill_buffer — literally just fill buffer using the sDMA engine. It's giving utility function with main character energy. 🦋

🌸 SYNOPSIS 🌸

void sdma_v5_2_emit_fill_buffer (struct amdgpu_ib *ib , uint32_t
src_data , uint64_t dst_offset , uint32_t byte_count );

yep, that's the whole signature — returns void, takes four things, no notes. 🫶

🧚 ARGUMENTS 🧚

  • ib — the indirect buffer to fill. this is your canvas, your little scratchpad of commands 💜
  • src_data — the value to write to buffer. this is the actual juice going in there ✨
  • dst_offset — the dst GPU address. where the magic lands, iykyk 📍
  • byte_count — number of bytes to xfer. how much of the good stuff we're moving, no cap 💫

🔥 DESCRIPTION 🔥

Fill GPU buffers using the DMA engine. That's it, that's the vibe — you hand it an indirect buffer, a value, a GPU address and a byte count, and the sDMA engine gets to work. Lowkey iconic that it's this simple. 👑

no cap, this is the entire description in the original too — some functions are three words and a dream and that's fine 💅

🌈 SEE ALSO 🌈

the friend group 🫶 — first up, the kernel file where this all lives:

  • Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c

and then the whole squad of related functions, not me listing them all, but here we go, every single one:

and that's the whole page, bestie, you ate that 🍓 anyway mwah, this one's dated October 2026, straight outta the ./drivers/gpu/drm/amd/amdgpu directory, Kernel API Manual edition — go read the source, ily, bye 💜✨

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