sdma_v4_0_emit_fill_buffer(9)

💅 sdma_v4_0_emit_fill_buffer(9)

okay so bestie, welcome to the Kernel API Manual ✨ — this one's all about sdma_v4_0_emit_fill_buffer, and honestly? she's a whole vibe. she fills buffers. with the sDMA engine. that's the tweet. 🦋

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🌸 SYNOPSIS 🌸

void sdma_v4_0_emit_fill_buffer (struct amdgpu_ib *ib , uint32_t
src_data , uint64_t dst_offset , uint32_t byte_count );

like yes, that's the whole signature, no cap — void, so she doesn't even return anything to you. she just does it. main character energy fr fr 💅

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🎀 ARGUMENTS 🎀

• ib — the indirect buffer you're copying to. the canvas. the moment. 🖌️
• src_data — the actual value being written into the buffer. this is the ~content~ bestie, it's a uint32_t and it's iconic.
• dst_offset — the dst GPU address, as a uint64_t. where the magic lands. 📍
• byte_count — how many bytes to xfer. yes "xfer", yes that's the manpage's word, we keep the lore. a uint32_t of pure quantity. 🔢

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⭐ DESCRIPTION ⭐

Fill GPU buffers using the DMA engine, and specifically for VEGA10/12. that's it. that's the whole description. short, sweet, absolutely ate. 🔥

ngl it's giving "small function, big job" — she fills your GPU buffers via the DMA engine and then dips. 🧚

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👑 SEE ALSO 👑

• the kernel file itself, ./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c — go read the source, iykyk 🫶
• sdma_v4_0_init_microcode(9)
• sdma_v4_0_ring_get_rptr(9)
• sdma_v4_0_ring_get_wptr(9)
• sdma_v4_0_ring_set_wptr(9)
• sdma_v4_0_page_ring_get_wptr(9)
• sdma_v4_0_page_ring_set_wptr(9)
• sdma_v4_0_ring_emit_ib(9)
• sdma_v4_0_ring_emit_hdp_flush(9)
• sdma_v4_0_ring_emit_fence(9)
• sdma_v4_0_gfx_enable(9)
• sdma_v4_0_rlc_stop(9)
• sdma_v4_0_page_stop(9)
• sdma_v4_0_ctx_switch_enable(9)
• sdma_v4_0_enable(9)
• sdma_v4_0_gfx_resume(9)
• sdma_v4_0_page_resume(9)
• sdma_v4_0_rlc_resume(9)
• sdma_v4_0_load_microcode(9)
• sdma_v4_0_start(9)
• sdma_v4_0_ring_test_ring(9)
• sdma_v4_0_ring_test_ib(9)
• sdma_v4_0_vm_copy_pte(9)
• sdma_v4_0_vm_write_pte(9)
• sdma_v4_0_vm_set_pte_pde(9)
• sdma_v4_0_ring_pad_ib(9)
• sdma_v4_0_ring_emit_pipeline_sync(9)
• sdma_v4_0_ring_emit_vm_flush(9)
• sdma_v4_0_emit_copy_buffer(9) — her sister function, literally the copy counterpart, obsessed 💜

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ok that's the whole page bestie, every flag and every reference accounted for, no skips, no summaries, we keep the lore intact 💖

and that's a wrap! brought to you by the fine folks over at ./drivers/gpu/drm/amd/amdgpu, stamped October 2026 — mwah, slay, periodt 🌈⭐🎀