cik_sdma_enable(9)

✨ cik_sdma_enable ✨

okay so this is a page from the Kernel API Manual, section 9, and bestie… it's a little one but she's important 💖

---

🌸 NAME 🌸

cik_sdma_enable — stop the async dma engines

like yes, the name says enable and the description says stop, don't come for her, that's literally what the page says 🫶

---

🎀 SYNOPSIS 🎀

void cik_sdma_enable (struct radeon_device *rdev , bool enable );

returns void, so no return value to check, no drama, she just does the thing 💅

---

🦋 ARGUMENTS 🦋

• rdev — a radeon_device pointer, i.e. your whole radeon device situation 👑
• enable — the enable/disable toggle for the DMA MEs, highkey just a bool doing bool things ✨

---

💜 DESCRIPTION 💜

Halt or unhalt the async dma engines (CIK).

that's the whole vibe: enable flips them, and the async DMA engines on CIK go from halted to unhalted (or the other way around, no cap) 🔥

---

🌈 SEE ALSO 🌈

the kernel file ./drivers/gpu/drm/radeon/cik_sdma.c and honestly the entire friend group:

• cik_sdma_get_rptr(9)
• cik_sdma_get_wptr(9)
• cik_sdma_set_wptr(9)
• cik_sdma_ring_ib_execute(9)
• cik_sdma_hdp_flush_ring_emit(9)
• cik_sdma_fence_ring_emit(9)
• cik_sdma_semaphore_ring_emit(9)
• cik_sdma_gfx_stop(9)
• cik_sdma_rlc_stop(9)
• cik_sdma_ctx_switch_enable(9)
• cik_sdma_gfx_resume(9)
• cik_sdma_rlc_resume(9)
• cik_sdma_load_microcode(9)
• cik_sdma_resume(9)
• cik_sdma_fini(9)
• cik_copy_dma(9)
• cik_sdma_ring_test(9)
• cik_sdma_ib_test(9)
• cik_sdma_is_lockup(9)
• cik_sdma_vm_copy_pages(9)
• cik_sdma_vm_write_pages(9)
• cik_sdma_vm_set_pages(9)
• cik_sdma_vm_pad_ib(9)

every single one, exactly as listed, go read them, iykyk 📚

---

ngl the whole page is short but she ate — halt/unhalt, one bool, no cap 💀

---

and that's the tea 🍓 this one lives in ./drivers/gpu/drm/radeon, dated October 2026, filed under cik_sdma_enable(9) in the Kernel API Manual — mwah, stan, periodt 💖🧚‍♀️