amdgpu_gart_map_gfx9_mqd(9)

💖 amdgpu_gart_map_gfx9_mqd(9) 💖

okay bestie, welcome to the Kernel API Manual — this one's all about amdgpu_gart_map_gfx9_mqd, and honestly? It's giving “small function, very specific job” energy. 🎀

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✨ NAME ✨

amdgpu_gart_map_gfx9_mqd — maps the mqd and ctrl_stack dma_addresses into GART entries 🦋

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🌸 SYNOPSIS 🌸

void amdgpu_gart_map_gfx9_mqd (struct amdgpu_device *adev , uint64_t
offset , int pages , dma_addr_t *dma_addr , uint64_t flags );

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💅 ARGUMENTS 💅

• adev — an amdgpu_device pointer, aka the main character device reference 👑
• offset — the offset into the GPU's gart aperture, so like... where in the aperture we're putting things 📍
• pages — the number of pages to bind, count ‘em 🔢
• dma_addr — the DMA addresses of pages, plural, she's got a list 💌
• flags — page table entry flags, the little extra settings ✨

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🧚 DESCRIPTION 🧚

So what this does is map the MQD and control stack addresses into GART entries with the correct memory types on gfxv9. Periodt. 💀

The MQD takes up the first 4KB and is followed by the control stack. The MQD is using UC (uncached) memory, while the control stack is using NC (non-coherent) memory. Different vibes, different memory types, both handled. 🫶

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🌈 SEE ALSO 🌈

Kernel file: ./drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c

• amdgpu_gart_dummy_page_init(9)
• amdgpu_gart_dummy_page_fini(9)
• amdgpu_gart_table_ram_alloc(9)
• amdgpu_gart_table_ram_free(9)
• amdgpu_gart_table_vram_alloc(9)
• amdgpu_gart_table_vram_free(9)
• amdgpu_gart_unbind(9)
• amdgpu_gart_map(9)
• amdgpu_gart_map_vram_range(9)
• amdgpu_gart_bind(9)
• amdgpu_gart_invalidate_tlb(9)
• amdgpu_gart_init(9)

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and that’s the whole page, bestie — bye from the Kernel API Manual, brought to you by ./drivers/gpu/drm/amd/amdgpu, dated October 2026. slay, mwah 💋🎀✨