sdma_v5_2_start(9)

💖 sdma_v5_2_start(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for sdma_v5_2_start(9). this is the little function that sets up the async dma engines and gets them going — no cap, it’s giving “turn it on and make it slay” energy ✨

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🌸 NAME 🌸

sdma_v5_2_start — setup and start the async dma engines 💅

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✨ SYNOPSIS ✨

int sdma_v5_2_start (struct amdgpu_device *adev );

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💅 ARGUMENTS 💅

• adev — amdgpu_device pointer. that’s the whole vibe for this arg 🫶

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🔥 DESCRIPTION 🔥

Set up the DMA engines and enable them. Returns 0 for success, error for failure. literally that simple, and the function said what it said 💖

bestie this is kernel API territory, so treat the return value with respect — 0 is the good ending, an error is the “oop” ending 😭

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🦋 SEE ALSO 🦋

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

• sdma_v5_2_ring_get_rptr(9)
• sdma_v5_2_ring_get_wptr(9)
• sdma_v5_2_ring_set_wptr(9)
• sdma_v5_2_ring_emit_ib(9)
• sdma_v5_2_ring_emit_mem_sync(9)
• sdma_v5_2_ring_emit_hdp_flush(9)
• sdma_v5_2_ring_emit_fence(9)
• sdma_v5_2_gfx_stop(9)
• sdma_v5_2_rlc_stop(9)
• sdma_v5_2_ctx_switch_enable(9)
• sdma_v5_2_enable(9)
• sdma_v5_2_gfx_resume_instance(9)
• sdma_v5_2_gfx_resume(9)
• sdma_v5_2_rlc_resume(9)
• sdma_v5_2_load_microcode(9)
• sdma_v5_2_ring_test_ring(9)
• sdma_v5_2_ring_test_ib(9)
• sdma_v5_2_vm_copy_pte(9)
• sdma_v5_2_vm_write_pte(9)
• sdma_v5_2_vm_set_pte_pde(9)
• sdma_v5_2_ring_pad_ib(9)
• sdma_v5_2_ring_emit_pipeline_sync(9)
• sdma_v5_2_ring_emit_vm_flush(9)
• sdma_v5_2_emit_copy_buffer(9)
• sdma_v5_2_emit_fill_buffer(9)

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and that’s the whole page, bestie 🎀 signed off from ./drivers/gpu/drm/amd/amdgpu, dated October 2026 — periodt 💜