r600_dma_get_wptr(9)

💖 r600_dma_get_wptr 💖

okay so this is a page from the Kernel API Manual (yes, the r600_dma_get_wptr(9) one, bestie, you're in the right place 🫶) and it's honestly such a little snack of a function. Let's get into it.

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✨ NAME ✨

r600_dma_get_wptr — get the current write pointer 👑

🌸 SYNOPSIS 🌸

uint32_t r600_dma_get_wptr (struct radeon_device *rdev , struct
       radeon_ring *ring );

like, it literally returns a uint32_t and takes two pointers, no cap 💅

🎀 ARGUMENTS 🎀

• rdev — radeon_device pointer 🖥️ (the device, the whole vibe)
• ring — radeon ring pointer 🌀 (the ring u care about)

🦋 DESCRIPTION 🦋

Get the current wptr from the hardware (r6xx+). ✨

that's it, that's the whole function. it grabs the current write pointer straight from the hardware, and it's giving r6xx-and-later energy only, iykyk 🌈

💜 SEE ALSO 💜

the kernel file lives at ./drivers/gpu/drm/radeon/r600_dma.c 📁 and honestly the whole friend group is iconic:

• r600_dma_get_rptr(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_fence_ring_emit(9)
• r600_dma_semaphore_ring_emit(9)
• r600_dma_ib_test(9)
• r600_dma_ring_ib_execute(9)
• r600_copy_dma(9)

go read them all, they ate 🔥

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ngl this page is from ./drivers/gpu/drm/radeon, dated October 2026 — so like, future vibes only 🕰️✨ mwah, stan this manpage, bye bestie 💖🎀🦋