sdma_v5_2_ring_get_rptr(9)

💖 sdma_v5_2_ring_get_rptr — get the current read pointer 💖

okay so bestie, this one's from the Kernel API Manual (the sdma_v5_2_ring_get_rptr(9) corner of it), and honestly it's a little baby function that punches way above its weight. let's get into it ✨

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🌸 NAME 🌸

sdma_v5_2_ring_get_rptr — literally just get the current read pointer. that's the whole vibe. that's the job. 🎀

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🦋 SYNOPSIS 🦋

uint64_t sdma_v5_2_ring_get_rptr (struct amdgpu_ring *ring );

like, you hand it a ring, it hands you back a uint64_t. transactional. iconic. 💅

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💜 ARGUMENTS 💜

• ring — an amdgpu ring pointer. that's it. that's the whole guest list. 🫶

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🔥 DESCRIPTION 🔥

so what it actually does: it gets the current rptr (that's the read pointer, iykyk) from the hardware, and it's specifically the NAVI10+ flavour of that move. no cap, that's the entire description. short queen. 👑

ngl it's a one-liner of a function, but the read pointer is main character energy in a ring buffer, so don't sleep on it 💀

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c — go read the source bestie, it's all there 📖
• sdma_v5_2_ring_get_wptr(9)
• sdma_v5_2_ring_set_wptr(9)
• sdma_v5_2_ring_emit_ib(9)
• sdma_v5_2_ring_emit_mem_sync(9)
• sdma_v5_2_ring_emit_hdp_flush(9)
• sdma_v5_2_ring_emit_fence(9)
• sdma_v5_2_gfx_stop(9)
• sdma_v5_2_rlc_stop(9)
• sdma_v5_2_ctx_switch_enable(9)
• sdma_v5_2_enable(9)
• sdma_v5_2_gfx_resume_instance(9)
• sdma_v5_2_gfx_resume(9)
• sdma_v5_2_rlc_resume(9)
• sdma_v5_2_load_microcode(9)
• sdma_v5_2_start(9)
• sdma_v5_2_ring_test_ring(9)
• sdma_v5_2_ring_test_ib(9)
• sdma_v5_2_vm_copy_pte(9)
• sdma_v5_2_vm_write_pte(9)
• sdma_v5_2_vm_set_pte_pde(9)
• sdma_v5_2_ring_pad_ib(9)
• sdma_v5_2_ring_emit_pipeline_sync(9)
• sdma_v5_2_ring_emit_vm_flush(9)
• sdma_v5_2_emit_copy_buffer(9)
• sdma_v5_2_emit_fill_buffer(9)

like, that's the whole friend group right there — every single one of them, no skips 🌈

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so that's the page, bestie!! 🌸 this cutie lives in ./drivers/gpu/drm/amd/amdgpu, the manual's dated October 2026, and it's the Kernel API Manual edition — mwah, go get that rptr 💅✨🫶