sdma_v5_0_start(9)
β¨ NAME β¨
sdma_v5_0_start β bestie, this is the one that sets up and starts the async dma engines π
so like, real talk, this page lives in the Kernel API Manual, and it's all about one single function. that's it. that's the whole vibe. π¦
πΈ SYNOPSIS πΈ
int sdma_v5_0_start (struct amdgpu_device *adev );
yep, that's the whole signature. one argument, returns an int. iconic behavior honestly π
π«Ά ARGUMENTS π«Ά
adevβ anamdgpu_devicepointer. that's the whole thing, she just needs the device and she's off π
π₯ DESCRIPTION π₯
okay so here's the tea β β sdma_v5_0_start sets up the DMA engines and then enables them (this is the NAVI10 squad, iykyk).
and the return situation? it returns 0 for success, or an error for failure. no cap, that's it. not me being obsessed with a function that just... does its job π§
π SEE ALSO π
the kernel file where all the magic lives:
./drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
and bestie, the whole friend group π«Ά β every single one of these:
sdma_v5_0_init_microcode(9)sdma_v5_0_ring_get_rptr(9)sdma_v5_0_ring_get_wptr(9)sdma_v5_0_ring_set_wptr(9)sdma_v5_0_ring_emit_ib(9)sdma_v5_0_ring_emit_mem_sync(9)sdma_v5_0_ring_emit_hdp_flush(9)sdma_v5_0_ring_emit_fence(9)sdma_v5_0_gfx_stop(9)sdma_v5_0_rlc_stop(9)sdma_v5_0_ctx_switch_enable(9)sdma_v5_0_enable(9)sdma_v5_0_gfx_resume_instance(9)sdma_v5_0_gfx_resume(9)sdma_v5_0_rlc_resume(9)sdma_v5_0_load_microcode(9)sdma_v5_0_ring_test_ring(9)sdma_v5_0_ring_test_ib(9)sdma_v5_0_vm_copy_pte(9)sdma_v5_0_vm_write_pte(9)sdma_v5_0_vm_set_pte_pde(9)sdma_v5_0_ring_pad_ib(9)sdma_v5_0_ring_emit_pipeline_sync(9)sdma_v5_0_ring_emit_vm_flush(9)sdma_v5_0_emit_copy_buffer(9)sdma_v5_0_emit_fill_buffer(9)
like, the whole squad showed up. main character energy all around π
π reminder bestie: 0 means slay, anything else means something went wrong. don't @ me.
okay and for the lil sign-off π β this whole thing comes from ./drivers/gpu/drm/amd/amdgpu, it's dated October 2026, and it's a proud member of the Kernel API Manual family. periodt. ππΈ
ily, go read your kernel source, mwah π«Άβ¨
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms