sdma_v4_4_2_ring_test_ring(9)

okay bestie, welcome to the Kernel API Manual entry for sdma_v4_4_2_ring_test_ring(9) — manual name folded in near the top, exactly as requested, and we are already obsessed 💅✨

🌸 NAME 🌸

sdma_v4_4_2_ring_test_ring — simple async dma engine test. That’s the name, that’s the vibe, no cap.

✨ SYNOPSIS ✨

int sdma_v4_4_2_ring_test_ring (struct amdgpu_ring *ring );

💖 ARGUMENTS 💖

• ring — amdgpu_ring structure holding ring information. Basically the ring’s info package, and you’re handing it over. 🫶

🦋 DESCRIPTION 🦋

okay so here’s the tea: this function tests the DMA engine by writing — using it to write an value to memory. If it slays, it returns 0 for success; if it doesn’t, it returns error for failure. Periodt. 🔥

👑 SEE ALSO 👑

Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c is right here, bestie — and peep the whole squad:

• sdma_v4_4_2_init_microcode(9)
• sdma_v4_4_2_ring_get_rptr(9)
• sdma_v4_4_2_ring_get_wptr(9)
• sdma_v4_4_2_ring_set_wptr(9)
• sdma_v4_4_2_page_ring_get_wptr(9)
• sdma_v4_4_2_page_ring_set_wptr(9)
• sdma_v4_4_2_ring_emit_ib(9)
• sdma_v4_4_2_ring_emit_hdp_flush(9)
• sdma_v4_4_2_ring_emit_fence(9)
• sdma_v4_4_2_inst_gfx_stop(9)
• sdma_v4_4_2_inst_rlc_stop(9)
• sdma_v4_4_2_inst_page_stop(9)
• sdma_v4_4_2_inst_ctx_switch_enable(9)
• sdma_v4_4_2_inst_enable(9)
• sdma_v4_4_2_gfx_resume(9)
• sdma_v4_4_2_page_resume(9)
• sdma_v4_4_2_inst_rlc_resume(9)
• sdma_v4_4_2_inst_load_microcode(9)
• sdma_v4_4_2_inst_start(9)
• sdma_v4_4_2_ring_test_ib(9)
• sdma_v4_4_2_vm_copy_pte(9)
• sdma_v4_4_2_vm_write_pte(9)
• sdma_v4_4_2_vm_set_pte_pde(9)
• sdma_v4_4_2_ring_pad_ib(9)
• sdma_v4_4_2_ring_emit_pipeline_sync(9)
• sdma_v4_4_2_ring_emit_vm_flush(9)
• sdma_v4_4_2_emit_copy_buffer(9)
• sdma_v4_4_2_emit_fill_buffer(9)
• sdma_v4_4_2_update_reset_mask(9)

with all the love from the Kernel API Manual 💖 — source/version ./drivers/gpu/drm/amd/amdgpu, dated October 2026, for sdma_v4_4_2_ring_test_ring(9). bye bestie, go test that ring! 🌈