sdma_v2_4_emit_fill_buffer(9)

✨ NAME ✨

okay so bestie, this page lives in the Kernel API Manual, and the main character is sdma_v2_4_emit_fill_buffer — it's literally the “fill buffer using the sDMA engine” function 💅

🌸 SYNOPSIS 🌸

void sdma_v2_4_emit_fill_buffer (struct amdgpu_ib *ib , uint32_t
       src_data , uint64_t dst_offset , uint32_t byte_count );

🎀 ARGUMENTS 🎀

• ib — the indirect buffer you're copying to 🫶
• src_data — the value that gets written into the buffer, no cap ✨
• dst_offset — the dst GPU address, and yes bestie it's dst, not dest 💖
• byte_count — number of bytes to xfer 🌈

🦋 DESCRIPTION 🦋

Fill GPU buffers using the DMA engine (VI). That's the whole vibe — it's giving “DMA engine says fill it,” and honestly? Iconic. 💅

👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
• sdma_v2_4_init_microcode(9)
• sdma_v2_4_ring_get_rptr(9)
• sdma_v2_4_ring_get_wptr(9)
• sdma_v2_4_ring_set_wptr(9)
• sdma_v2_4_ring_emit_ib(9)
• sdma_v2_4_ring_emit_hdp_flush(9)
• sdma_v2_4_ring_emit_fence(9)
• sdma_v2_4_gfx_stop(9)
• sdma_v2_4_rlc_stop(9)
• sdma_v2_4_enable(9)
• sdma_v2_4_gfx_resume(9)
• sdma_v2_4_rlc_resume(9)
• sdma_v2_4_start(9)
• sdma_v2_4_ring_test_ring(9)
• sdma_v2_4_ring_test_ib(9)
• sdma_v2_4_vm_copy_pte(9)
• sdma_v2_4_vm_write_pte(9)
• sdma_v2_4_vm_set_pte_pde(9)
• sdma_v2_4_ring_pad_ib(9)
• sdma_v2_4_ring_emit_pipeline_sync(9)
• sdma_v2_4_ring_emit_vm_flush(9)
• sdma_v2_4_emit_copy_buffer(9)

and that's the whole page, bestie 🫶 huge shoutout to the source/version crew over at ./drivers/gpu/drm/amd/amdgpu, and this one's dated October 2026 — periodt 💖✨