EBUS(4)

🌸 EBUS(4) — bestie's guide to the SPARC EBus 🌸

so this lil page lives in the Kernel Interfaces Manual, and it's literally your intro to SPARC EBus bus support and drivers 💅 lowercase "introduction," very chill, very demure.

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✨ NAME ✨

EBus — introduction to SPARC EBus bus support and drivers 🦋

okay so this is the whole entire vibe: it's the intro page, the meet-cute, the "hey bestie here's what EBus even is" of it all. support + drivers, both mentioned, both important, no cap.

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⭐ SYNOPSIS ⭐

ebus* at pci?

that's it, that's the whole synopsis 🎀 the * and the ? are doing their little wildcard thing, and yes you keep them exactly like that, do not touch, they're iconic.

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💖 DESCRIPTION 💖

okay so picture this: the EBus bus was designed to give you the ability to put ISA and traditional Intel-style peripherals into a SPARC based system — and it does it with a minimal amount of glue logic ✨ like, barely any glue. so little glue. slay for efficiency honestly.

typically — not always, typically — it's implemented in the PCIO IC from SME, which is also out here implementing a hme(4) compatible PCI network device ('network') 🫶 so that one chip is really doing the most, main character energy fr fr.

and the EBus has four DMA channels 👑 four!! similar to the DMA you see in the esp(4) SCSI DMA 🌈 so if you already know how that DMA works, you already know this DMA's whole deal. iykyk.

no warnings on this one bestie, it's a nice short lore page 💜 but like, do keep the details straight — hme(4) and esp(4) are real references and they're staying right there.

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🎀 SEE ALSO 🎀

• Sun Microelectronics, Peripheral Component Interconnect Input Output Controller, Part No.: 802-7837-01, http://www.sun.com/oem/products/manuals/802-7837.pdf, March 1997.

like, go read the actual spec if you want the full ✨lore✨ — it's the PCIO doc, part number and everything, character for character, because we don't play about citations 💅

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and that's the page!! short, sweet, four DMA channels of pure potential 🦋💖✨

sign-off time: this beauty comes to you from Debian, dated March 13, 2002, and the header at the top was EBUS(4) — mwah, love that for us 🍓🧚‍♀️💜