OHCI(4)

📦
version 15.1 · 3 versions
, in freebsd 14.5, freebsd 15.1, nixpkgs unstable

💖 OHCI(4) — OHCI USB Host Controller driver 💖

okay so this is the OHCI(4) page from the Kernel Interfaces Manual, and it’s literally all about the ohci driver. bestie, it’s giving USB host controller realness 💅✨

🌸 NAME 🌸

ohci — OHCI USB Host Controller driver. that’s the name, no cap 🎀

✨ SYNOPSIS ✨

device ohci

that’s the whole synopsis, short and iconic 🫶

🦋 DESCRIPTION 🦋

okay so the ohci driver provides support for OHCI-type PCI based USB controllers. that’s its whole main character job 💖

🧸 HARDWARE 🧸

the ohci driver supports all OHCI v1.0 compliant controllers including:

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

look at that list, it ate 🔥

🔧 SYSCTL VARIABLES 🔧

the following variables are available as both sysctl(8) variables and loader(8) tunables:

  • hw.usb.ohci.debug — debug output level, where 0 is debugging disabled and larger values increase debug message verbosity. default is 0. so yeah, 0 means quiet mode, and bigger numbers mean more debug tea ☕👀

👑 SEE ALSO 👑

go check out ehci(4), uhci(4), and xhci(4) — the whole USB host controller friend group 🫶🌈

⭐ HISTORY ⭐

the ohci device driver first appeared in FreeBSD 3.0. vintage but still serving 💅

💜 AUTHORS 💜

the ohci driver was written by Lennart Augustsson <augustss@carlstedt.se> for the NetBSD project. slay, Lennart 🎀✨

mwah 💋 this page is from Debian, dated December 24, 2020, and it’s the OHCI(4) manual. bye bestie 🫶🌈

📦 where this page comes from