drm_prime_sg...a_addr_array(9)

💅 drm_prime_sg_to_dma_addr_array 💅

okay bestie, welcome to the Kernel API Manual ✨ this one's a kernel function page, and it's lowkey a little workhorse — it takes your scatter-gather table and turns it into a dma addr array. no cap, that's the whole vibe. let's get into it 🫶

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🌸 NAME 🌸

drm_prime_sg_to_dma_addr_array — convert an sg table into a dma addr array

like... it literally does what it says on the tin 💖

✨ SYNOPSIS ✨

int drm_prime_sg_to_dma_addr_array (struct sg_table *sgt , dma_addr_t
*addrs , int max_entries );

that's the whole signature, keep it exactly like that, no editing bestie 🙈

🎀 ARGUMENTS 🎀

• sgt — the scatter-gather table we're converting. this is the thing you're pulling pages/addresses out of 🦋
• addrs — the array where the dma bus address of each page gets stored. it's the destination, the main character of storage here 👑
• max_entries — the size of both the passed-in arrays. yes, both. it's doing double duty, iconic 💅

💖 DESCRIPTION 💖

So here's the tea: this function exports an sg table into an array of addresses. that's it, that's the job 🍓

And drivers should use this in their drm_driver.gem_prime_import_sg_table implementation. fr fr, that's the intended spot for it — don't just sprinkle it around like glitter, put it where it belongs ✨

🦋 SEE ALSO 🦋

• Kernel file ./drivers/gpu/drm/drm_prime.c overview and lifetime rules(9)
• drm_gem_dmabuf_export(9)
• drm_gem_dmabuf_release(9)
• drm_gem_prime_fd_to_handle(9)
• drm_gem_prime_handle_to_dmabuf(9)
• drm_gem_prime_handle_to_fd(9)
• PRIME Helpers(9)
• drm_gem_map_attach(9)
• drm_gem_map_detach(9)
• drm_gem_map_dma_buf(9)
• drm_gem_unmap_dma_buf(9)
• drm_gem_dmabuf_vmap(9)
• drm_gem_dmabuf_vunmap(9)
• drm_gem_prime_mmap(9)
• drm_gem_dmabuf_mmap(9)
• drm_prime_pages_to_sg(9)
• drm_prime_get_contiguous_size(9)
• drm_gem_prime_export(9)
• drm_gem_is_prime_exported_dma_buf(9)
• drm_gem_prime_import_dev(9)
• drm_gem_prime_import(9)
• drm_prime_sg_to_page_array(9)
• drm_prime_gem_destroy(9)

like, that's the whole friend group right there — go read them too, iykyk 💜

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ok and that's a wrap on this one 🌈 every single cross-reference survived the vibe check, so go be a main character in drm_prime.c 🧚

sign-off time, bestie: this page lives under ./drivers/gpu/drm, and it's dated October 2026 🎀 periodt.