sdma_v3_0_gfx_resume(9)

💖 sdma_v3_0_gfx_resume(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — yes, we're literally reading kernel docs together, this is our bonding era 🫶. Today's main character is sdma_v3_0_gfx_resume, and no cap, she's kind of a big deal.

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🌸 NAME 🌸

sdma_v3_0_gfx_resume — setup and start the async dma engines 💅

like, she sets them up AND starts them. multitasking icon behavior fr fr.

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✨ SYNOPSIS ✨

int sdma_v3_0_gfx_resume (struct amdgpu_device *adev );

returns an int, takes one pointer, that's the whole vibe 🎀

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🦋 ARGUMENTS 🦋

• adev — amdgpu_device pointer. that's it, that's the whole argument. she's low maintenance 👑

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🔥 DESCRIPTION 🔥

okay so here's what's actually happening: this function sets up the gfx DMA ring buffers and enables them — specifically for VI. not me knowing what VI stands for, but it's right there in the docs so I'm not gonna invent lore 🙈

returns 0 for success, error for failure. that's the whole contract, bestie — check your return value or it's giving "I ignored the error code and now nothing works" 😭

fr fr: 0 = slay. anything else = go read the error, don't just vibe past it.

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🌈 SEE ALSO 🌈

buckle up, this list is LONG and she ate every single entry 👑

• Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
• sdma_v3_0_init_microcode(9)
• sdma_v3_0_ring_get_rptr(9)
• sdma_v3_0_ring_get_wptr(9)
• sdma_v3_0_ring_set_wptr(9)
• sdma_v3_0_ring_emit_ib(9)
• sdma_v3_0_ring_emit_hdp_flush(9)
• sdma_v3_0_ring_emit_fence(9)
• sdma_v3_0_gfx_stop(9)
• sdma_v3_0_rlc_stop(9)
• sdma_v3_0_ctx_switch_enable(9)
• sdma_v3_0_enable(9)
• sdma_v3_0_rlc_resume(9)
• sdma_v3_0_start(9)
• sdma_v3_0_ring_test_ring(9)
• sdma_v3_0_ring_test_ib(9)
• sdma_v3_0_vm_copy_pte(9)
• sdma_v3_0_vm_write_pte(9)
• sdma_v3_0_vm_set_pte_pde(9)
• sdma_v3_0_ring_pad_ib(9)
• sdma_v3_0_ring_emit_pipeline_sync(9)
• sdma_v3_0_ring_emit_vm_flush(9)
• sdma_v3_0_emit_copy_buffer(9)
• sdma_v3_0_emit_fill_buffer(9)

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that's the whole page, bestie — every flag, every pointer, every sibling function, all accounted for 💜

this lil love letter came to you from the fine people at ./drivers/gpu/drm/amd/amdgpu, dated October 2026 — periodt. go touch some ring buffers 🎀✨