vcn_v4_0_mc_resume(9)
π vcn_v4_0_mc_resume β a.k.a. the "go tell the memory controller where stuff lives" era
okay so bestie, welcome to the Kernel API Manual β¨ β yes we're reading kernel docs for fun now, that's just who we are πββοΈ. This one's about vcn_v4_0_mc_resume, and honestly? it's a short one. a little snack. a lil amuse-bouche of a function π.
πΈ NAME πΈ
vcn_v4_0_mc_resume β memory controller programming, no cap π
β¨ SYNOPSIS β¨
void vcn_v4_0_mc_resume (struct amdgpu_vcn_inst *vinst );
that's it. that's the whole signature. short king energy π.
π¦ ARGUMENTS π¦
vinstβ the VCN instance, like, the actual one you're working with π. that's it, that's the whole argument list, she's low-maintenance.
π₯ DESCRIPTION π₯
So what does she do? The description literally says: "Let the VCN memory controller know it's offsets" π«Ά.
Translation into bestie-speak: this is the moment where the VCN memory controller gets clued in on its offsets. you're basically introducing the memory controller to its own address info. it's giving "hey girl, here's where you live" π β¨. That's the entire description. No extra lore, no secret features, nothing hidden. She's a single-purpose icon and we respect it π.
β SEE ALSO β
Kernel file lives at ./drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c β go read it, iykyk ππ
and then the whole friend group, in order, because we don't gatekeep:
vcn_v4_0_early_init(9)vcn_v4_0_sw_init(9)vcn_v4_0_sw_fini(9)vcn_v4_0_hw_init(9)vcn_v4_0_hw_fini(9)vcn_v4_0_suspend(9)vcn_v4_0_resume(9)vcn_v4_0_mc_resume_dpg_mode(9)vcn_v4_0_disable_static_power_gating(9)vcn_v4_0_enable_static_power_gating(9)vcn_v4_0_disable_clock_gating(9)vcn_v4_0_disable_clock_gating_dpg_mode(9)vcn_v4_0_enable_clock_gating(9)vcn_v4_0_start_dpg_mode(9)vcn_v4_0_start(9)vcn_v4_0_stop_dpg_mode(9)vcn_v4_0_stop(9)vcn_v4_0_pause_dpg_mode(9)vcn_v4_0_unified_ring_get_rptr(9)vcn_v4_0_unified_ring_get_wptr(9)vcn_v4_0_unified_ring_set_wptr(9)vcn_v4_0_set_unified_ring_funcs(9)vcn_v4_0_is_idle(9)vcn_v4_0_wait_for_idle(9)vcn_v4_0_set_clockgating_state(9)vcn_v4_0_set_ras_interrupt_state(9)vcn_v4_0_process_interrupt(9)vcn_v4_0_set_irq_funcs(9)
like, the whole ensemble cast fr fr ππ
π sign-off π
k bye bestie!! this page came straight out of ./drivers/gpu/drm/amd/amdgpu, dated October 2026 β yes, from the future, main character energy only β°π. slay, hydrate, and remember: the memory controller just wants to know its offsets πβ¨π«Ά
mwah 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