r600_dma_fence_ring_emit(9)

💖 r600_dma_fence_ring_emit(9) 💖

okay so bestie, this page comes straight from the Kernel API Manual, and it's serving one very specific little function. let's get into it 💅

✨ NAME ✨

r600_dma_fence_ring_emit — emit a fence on the DMA ring 🎀

🌸 SYNOPSIS 🌸

the signature is literally giving:

void r600_dma_fence_ring_emit (struct radeon_device *rdev , struct
       radeon_fence *fence );

💅 ARGUMENTS 💅

• rdev — a radeon_device pointer, no cap 🫶
• fence — a radeon_fence fence object, iconic behavior fr fr ✨

🦋 DESCRIPTION 🦋

so what it does is add a DMA fence packet to the ring so the fence seq number gets written, plus a DMA trap packet to generate an interrupt if needed — and this is specifically for r6xx-r7xx, iykyk 💀🔥

🎀 SEE ALSO 🎀

kernel file: ./drivers/gpu/drm/radeon/r600_dma.c

the whole friend group is right here, bestie 💖

• r600_dma_get_rptr(9)
• r600_dma_get_wptr(9)
• r600_dma_set_wptr(9)
• r600_dma_stop(9)
• r600_dma_resume(9)
• r600_dma_fini(9)
• r600_dma_is_lockup(9)
• r600_dma_ring_test(9)
• r600_dma_semaphore_ring_emit(9)
• r600_dma_ib_test(9)
• r600_dma_ring_ib_execute(9)
• r600_copy_dma(9)

mwah 💋 source/version vibes: ./drivers/gpu/drm/radeon — October 2026 — r600_dma_fence_ring_emit(9) 🦋💜