si_dma_ring_get_wptr(9)

💫 si_dma_ring_get_wptr(9) — like, the Kernel API Manual, bestie 💫

Okay so real talk: this is a page from the Kernel API Manual, and it's all about grabbing the current write pointer. Short, sweet, and lowkey iconic. Let's get into it 🫶

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🌸 NAME 🌸

si_dma_ring_get_wptr — get the current write pointer ✨

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🎀 SYNOPSIS 🎀

uint64_t si_dma_ring_get_wptr (struct amdgpu_ring *ring );

That's the whole vibe. One function, one pointer, one uint64_t coming back at you 💅

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🦋 ARGUMENTS 🦋

• ring — an amdgpu ring pointer. That's it, that's the arg 🪩

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💖 DESCRIPTION 💖

Get the current wptr from the hardware (SI). No cap, that's literally the whole description — it's giving "short and mysterious" and we respect it 🔥

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🌈 SEE ALSO 🌈

Kernel file: ./drivers/gpu/drm/amd/amdgpu/si_dma.c

And the whole friend group of related calls 👑:

• si_dma_ring_get_rptr(9)
• si_dma_ring_emit_fence(9)
• si_dma_ring_test_ring(9)
• si_dma_ring_test_ib(9)
• si_dma_vm_copy_pte(9)
• si_dma_vm_write_pte(9)
• si_dma_vm_set_pte_pde(9)
• si_dma_ring_pad_ib(9)
• si_dma_ring_emit_pipeline_sync(9)
• si_dma_ring_emit_vm_flush(9)
• si_dma_emit_copy_buffer(9)
• si_dma_emit_fill_buffer(9)

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Bestie note: this page is from ./drivers/gpu/drm/amd/amdgpu, and the manual footer says October 2026 — so yeah, it's timestamped and everything, periodt 💅✨

Stay slay, read your pointers, and don't forget to check the rptr too 🧚💜