cik_sdma_is_lockup(9)

💅 cik_sdma_is_lockup(9) 💅

okay so bestie, welcome to the Kernel API Manual page for cik_sdma_is_lockup(9). it’s giving “quick lil vibe check for the DMA engine,” and honestly? iconic. let’s get into it. 🦋

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🌸 NAME 🌸

cik_sdma_is_lockup — check if the DMA engine is locked up. literally that’s the assignment, no cap. ✨

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🎀 SYNOPSIS 🎀

bool cik_sdma_is_lockup (struct radeon_device *rdev , struct radeon_ring
*ring );

that’s the signature, periodt. 💅

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🫶 ARGUMENTS 🫶

• rdev — a radeon_device pointer. it’s the device handle, bestie. 🎀
• ring — a radeon_ring structure holding ring information. yes, the ring info lives here. ✨

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🔥 DESCRIPTION 🔥

so this one checks if the async DMA engine is locked up — specifically for CIK. if the engine appears to be locked up, it returns true; if not, it returns false. that’s the whole tea. ☕💀

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🌈 SEE ALSO 🌈

Kernel file ./drivers/gpu/drm/radeon/cik_sdma.c — and here’s the whole squad, fr fr:

• 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_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_vm_copy_pages(9)
• cik_sdma_vm_write_pages(9)
• cik_sdma_vm_set_pages(9)
• cik_sdma_vm_pad_ib(9)

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and that’s the whole page, bestie! 🎀 mwah 💋 this one comes from ./drivers/gpu/drm/radeon, dated October 2026, and yes — it’s literally the cik_sdma_is_lockup(9) manual page. slay. ✨👑