cik_sdma_emit_fill_buffer(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cik_sdma_emit_fill_buffer — kernel API manual, section 9, bestie

Okay so picture this: you're deep in the kernel API manual (section 9, the driver-functions girlies ✨) and you stumble onto cik_sdma_emit_fill_buffer. That's our main character today. We're filling buffers. With the sDMA engine. It's giving hardware-accelerated glamour, no cap. 🎀

✨ NAME ✨

cik_sdma_emit_fill_buffer — literally fills a buffer using the sDMA engine 🦋

🌸 SYNOPSIS 🌸

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

Like, it returns nothing (void) and takes four things. That's it. That's the whole vibe check. 💜

🫶 ARGUMENTS 🫶

  • ib — the indirect buffer we're filling, bestie. This is the one getting the glow-up. ✨
  • src_data — the value to write into the buffer. The actual content. The personality, if you will. 💅
  • dst_offset — the dst GPU address. Where it's all going down. 📍
  • byte_count — number of bytes to xfer. How much we're moving. The dosage, lowkey. 🔥

👑 DESCRIPTION 👑

Fill GPU buffers using the DMA engine (CIK). That's the whole tea. ☕ The DMA engine does the heavy lifting so you don't have to, and honestly? Iconic behaviour. Not me being obsessed with a memory-fill function fr fr 😭

🌈 SEE ALSO 🌈

The source lives in the kernel file ./drivers/gpu/drm/amd/amdgpu/cik_sdma.c — go read it, iykyk 🧚

And here's the whole friend group, all present and accounted for, not one skipped (I would never 🙈):

Okay that's the whole page, periodt. 💖 This little beauty comes from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it's filed under cik_sdma_emit_fill_buffer(9). Go fill some buffers, bestie — slay. 🦋✨

📦 where this page comes from