sba_map_single(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sba_map_single(9) — like, the Kernel API Manual page, bestie 🎀

okay so picture this: you're a driver, you've got one (1) buffer, and you need it to be DMA-able. that's the whole plot. this is sba_map_single, and it maps one buffer and hands you back the IOVA for DMA. one. single. buffer. main character energy, no ensemble cast 💅

✨ SYNOPSIS ✨

dma_addr_t sba_map_single (struct device *dev , phys_addr_t addr ,
size_t size , enum dma_data_direction direction );

like literally that's the whole signature, copy it exactly please, we don't freestyle function signatures in this house 🫶

🌸 ARGUMENTS 🌸

  • dev — the instance of PCI owned by the driver that's asking. like, whose driver is this? this one's. 👑
  • addr — the driver buffer to map. the buffer in question. the one. the only.
  • size — number of bytes to map in that driver buffer. count 'em 🔢
  • direction — R/W or both. that's it, that's the option set, we contain multitudes 🌈

💖 DESCRIPTION 💖

ngl the entire description is a redirect, and honestly? iconic. go read:

Documentation/core-api/dma-api-howto.rst

that's the whole vibe check. it's giving "see attached" but make it kernel docs 😭

🦋 SEE ALSO 🦋

okay bestie, buckle up, because this list is long and we are NOT skipping a single one of these. every single one. periodt.

the kernel file is ./drivers/parisc/sba_iommu.c, and then, in this exact order:

that's nineteen besties and we love every one of them, no cap 🌟

ok and before you go — huge shoutout to ./drivers/parisc, dropping this masterpiece in October 2026 💖 the whole sba family ate and left absolutely no crumbs, fr fr 🧚✨
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