gmc_v7_0_mc_program(9)

💅 gmc_v7_0_mc_program 💅

okay so bestie, this is a page from the Kernel API Manual — yes it's a real manual page, yes it's for kernel devs, and yes you're gonna get it. it's called gmc_v7_0_mc_program, and it's the one that tells the GPU's memory controller where stuff lives. iconic behavior honestly.

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✨ NAME ✨

gmc_v7_0_mc_program — program the GPU memory controller 🧠✨

like, literally just vibe-check the memory controller and set it up.

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🫶 SYNOPSIS 🫶

void gmc_v7_0_mc_program (struct amdgpu_device *adev );

that's the whole signature. returns nothing (void), takes exactly one thing. no cap.

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🌸 ARGUMENTS 🌸

• adev — an amdgpu_device pointer 💖 that's the amdgpu device you're handing over. it's the main character here, she's the one you're programming.

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🎀 DESCRIPTION 🎀

so what does it actually do? it sets the location of vram, gart, and AGP in the GPU's physical address space (CIK). 🦋

that's it. that's the whole job. she maps out where those three things sit in the GPU's physical address space, and she does it for CIK. lowkey essential, highkey underrated. 💅

ngl this is the kind of function that looks tiny and then everything breaks if it's wrong. respect her.

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🔥 SEE ALSO 🔥

• the kernel file: ./drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
• gmc_v7_0_init_microcode(9)
• gmc_v7_0_mc_load_microcode(9)
• gmc_v7_0_mc_init(9)
• gmc_v7_0_flush_gpu_tlb_pasid(9)
• gmc_v7_0_flush_gpu_tlb(9)
• gmc_v7_0_set_fault_enable_default(9)
• gmc_v7_0_set_prt(9)
• gmc_v7_0_gart_enable(9)
• gmc_v7_0_gart_disable(9)
• gmc_v7_0_vm_decode_fault(9)

the whole gmc_v7_0 friend group fr fr, go read them all, iykyk 🧚💜

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🌷 ok that's the page!! sign-off time: this one lives under ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and she goes by gmc_v7_0_mc_program(9). slay, go program that memory controller bestie 💖🎀🌈