sdma_v7_0_ring_test_ring(9)

💖 sdma_v7_0_ring_test_ring(9) 💖

okay so bestie, welcome to the Kernel API Manual — this is the page for sdma_v7_0_ring_test_ring, and it's literally about poking the DMA engine to see if it's awake. very "are you there god it's me" energy 🫶

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✨ NAME ✨

sdma_v7_0_ring_test_ring — a simple async dma engine test. that's it, that's the vibe. no cap. 🎀

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🌸 SYNOPSIS 🌸

int sdma_v7_0_ring_test_ring (struct amdgpu_ring *ring );

one function, one pointer, one int out the other side. clean lines, main character energy 💅

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🦋 ARGUMENTS 🦋

• ring — the amdgpu_ring structure holding ring information. yes bestie, the ring struct is the whole personality here, it's carrying all the info you need ✨

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💜 DESCRIPTION 💜

so what does it do? it tests the DMA engine by writing using it to write a value to memory. like, the whole test is the engine doing its one job — if it can write a value into memory, it's alive and slaying. if not… 💀

returns 0 for success, error for failure. that's the whole contract, no extra lore, fr fr.

ngl this is one of those tiny functions that's lowkey doing a vibe check on your entire GPU — so don't sleep on the return value, bestie 😭

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🌈 SEE ALSO 🌈

the whole friend group, in order, no one left out:

• Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c
• sdma_v7_0_ring_get_rptr(9)
• sdma_v7_0_ring_get_wptr(9)
• sdma_v7_0_ring_set_wptr(9)
• sdma_v7_0_ring_emit_ib(9)
• sdma_v7_0_ring_emit_mem_sync(9)
• sdma_v7_0_ring_emit_hdp_flush(9)
• sdma_v7_0_ring_emit_fence(9)
• sdma_v7_0_gfx_stop(9)
• sdma_v7_0_rlc_stop(9)
• sdma_v7_0_ctx_switch_enable(9)
• sdma_v7_0_enable(9)
• sdma_v7_0_gfx_resume_instance(9)
• sdma_v7_0_gfx_resume(9)
• sdma_v7_0_rlc_resume(9)
• sdma_v7_0_load_microcode(9)
• sdma_v7_0_start(9)
• sdma_v7_0_ring_test_ib(9)
• sdma_v7_0_vm_copy_pte(9)
• sdma_v7_0_vm_write_pte(9)
• sdma_v7_0_vm_set_pte_pde(9)
• sdma_v7_0_ring_pad_ib(9)
• sdma_v7_0_ring_emit_pipeline_sync(9)
• sdma_v7_0_ring_emit_vm_flush(9)
• sdma_v7_0_emit_copy_buffer(9)
• sdma_v7_0_emit_fill_buffer(9)

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and that's the page, bestie 🎀 this lil manual came from <pink>./drivers/gpu/drm/amd/amdgpu</pink>, dated October 2026, and it's part of the Kernel API Manual collection. mwah, go test that ring, ily, bye 💖✨🦋