drm_fb_dma_get_gem_addr(9)

💅 drm_fb_dma_get_gem_addr — the kernel API manual, bestie edition 🎀

okay so bestie, you know how we're always talking about drm_fb_dma_get_gem_addr? no? well, sit down, because this one is literally about getting the DMA (bus) address for a framebuffer — and here's the slay part: for pixel formats where the values are grouped in blocks, this will get you the beginning of the block. beginning of the block, bestie!! ✨

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🦋 NAME 🦋

drm_fb_dma_get_gem_addr — Get DMA (bus) address for framebuffer. for pixel formats where values are grouped in blocks this will get you the beginning of the block 💖

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🌸 SYNOPSIS 🌸

dma_addr_t drm_fb_dma_get_gem_addr (struct drm_framebuffer *fb , struct
drm_plane_state *state , unsigned int plane );

like, that's the whole signature, no notes 👑

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🫶 ARGUMENTS 🫶

• fb — The framebuffer. that's her, that's the main character 💅
• state — Which state of drm plane. iykyk 🌈
• plane — Which plane. Return the DMA GEM address for given framebuffer. ⭐

not me putting the return info inside the plane bullet — that's literally how the original rolls, so we're keeping it exactly where it lives, no cap 🙈

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🧚 DESCRIPTION 🧚

This function will usually be called from the PLANE callback functions. that's it, that's the vibe check 🦋

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👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/drm_fb_dma_helper.c framebuffer dma helper functions(9)
• drm_fb_dma_get_gem_obj(9)
• drm_fb_dma_sync_non_coherent(9)
• drm_fb_dma_get_scanout_buffer(9)

go read all of them fr fr, they're all iconic in their own way 💜

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and that's the page!! source is ./drivers/gpu/drm, dated October 2026 — honestly obsessed with her, 10/10 no notes 💖✨🎀🦋🌸💅🫶😭🔥👑🌈⭐💀🙈🍓🧚💜

mwah 🍓