vcn_v4_0_3_mc_resume(9)
π vcn_v4_0_3_mc_resume β from the Kernel API Manual, bestie
okay so picture this: it's a (9) kernel API page, the star of the show is vcn_v4_0_3_mc_resume, and honestly? it's giving "small function, big responsibility" energy. let's get into it β¨
πΈ NAME πΈ
vcn_v4_0_3_mc_resume β memory controller programming. that's the whole vibe. it programs the memory controller. slay. π
β¨ SYNOPSIS β¨
void vcn_v4_0_3_mc_resume (struct amdgpu_vcn_inst *vinst );
no return value, one argument, in and out. iconic behavior tbh π¦
π«Ά ARGUMENTS π«Ά
vinstβ the VCN instance. that's it, that's the parameter. it's the VCN instance and it is literally the main character here π
π DESCRIPTION π
so what does it actually do? it lets the VCN memory controller know its offsets. that's the description, fr fr β the function goes and tells the memory controller where its offsets are so everybody's on the same page. no cap, that's the entire documented job πβ¨
like yes bestie it's a short one. not every function needs a novel. some just show up, tell the memory controller its offsets, and leave. and that's valid π
π SEE ALSO π
the kernel file lives right here, go look at the source if you want the real tea:
- Kernel file
./drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c
and the whole friend group, in order, every single one of them π«Ά:
vcn_v4_0_3_early_init(9)vcn_v4_0_3_sw_init(9)vcn_v4_0_3_sw_fini(9)vcn_v4_0_3_hw_init(9)vcn_v4_0_3_hw_fini(9)vcn_v4_0_3_suspend(9)vcn_v4_0_3_resume(9)vcn_v4_0_3_mc_resume_dpg_mode(9)vcn_v4_0_3_disable_clock_gating(9)vcn_v4_0_3_disable_clock_gating_dpg_mode(9)vcn_v4_0_3_enable_clock_gating(9)vcn_v4_0_3_start_dpg_mode(9)vcn_v4_0_3_start(9)vcn_v4_0_3_stop_dpg_mode(9)vcn_v4_0_3_stop(9)vcn_v4_0_3_pause_dpg_mode(9)vcn_v4_0_3_unified_ring_get_rptr(9)vcn_v4_0_3_unified_ring_get_wptr(9)vcn_v4_0_3_unified_ring_set_wptr(9)vcn_v4_0_3_set_unified_ring_funcs(9)vcn_v4_0_3_is_idle(9)vcn_v4_0_3_wait_for_idle(9)vcn_v4_0_3_set_interrupt_state(9)vcn_v4_0_3_process_interrupt(9)vcn_v4_0_3_set_irq_funcs(9)
lowkey obsessed with how the "see also" list is longer than the actual description. balance. harmony. the ecosystem ππ
π§ cute lil sign-off π§
this whole page comes to you from ./drivers/gpu/drm/amd/amdgpu, dated October 2026 β mwah, go read the source bestie, it's all there π₯πβ
vcn_v4_0_3_mc_resume(9) π that's the page, that's the post, periodt π
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