OHCI(4)

📦 version 12.2, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 OHCI 💖

okay so bestie, welcome to the ohci page from the Kernel Interfaces Manual — yes the manual name goes right here at the top, we're doing it, we're being ✨proper✨ for exactly one sentence 💅

🌸 NAME 🌸

ohci — the OHCI USB Host Controller driver, no cap 🦋

✨ SYNOPSIS ✨

device ohci

that's it. that's the whole vibe. one line and she's ready 👑

🎀 DESCRIPTION 🎀

so the ohci driver is literally the support system for OHCI-type PCI based USB controllers. that's the whole job description. she shows up, she handles your OHCI PCI USB controller, she goes home. main character energy fr fr 💖

🔥 HARDWARE 🔥

the ohci driver is not picky bestie — she supports all OHCI v1.0 compliant controllers, which includes every single one of these babies:

  • AcerLabs M5237 (Aladdin-V)
  • AMD-756
  • OPTi 82C861 (FireLink)
  • NEC uPD 9210
  • CMD Tech 670 (USB0670)
  • CMD Tech 673 (USB0673)
  • NVIDIA nForce3
  • Sun PCIO-2 (RIO USB)

eight icons. not one flop in the list. obsessed 😭💅

🌈 SYSCTL VARIABLES 🌈

these variables are available as both sysctl(8) variables and loader(8) tunables — double duty, she's versatile, she contains multitudes 🫶

  • hw.usb.ohci.debug — the debug output level. 0 means debugging is disabled, and larger values crank up the debug message verbosity. default is 0. so if you're getting nothing in your logs, that's not a bug bestie that's literally the default setting 🙈

🦋 SEE ALSO 🦋

the whole USB controller friend group, we love a supportive squad 💜

⭐ HISTORY ⭐

the ohci device driver first appeared in FreeBSD 3.0. she's vintage. she's iconic. she's been here since before you were born 💀✨

👑 AUTHORS 👑

the ohci driver was written by Lennart Augustsson <augustss@carlstedt.se> for the NetBSD project. absolute legend behaviour, we stan 🌸

and that's the page bestie, every flag, every controller, every default, nothing skipped, nothing invented, periodt 💅

this gem came from Debian, dated April 24, 2018, and it lives in the manual as OHCI(4) — take care of her, she's a classic 🎀🦋💖

📦 where this page comes from