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cc: freebsd-current@freebsd.org
Subject: Re: CURRENT state of modules
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----- Original Message ----- 
From: "Norikatsu Shigemura" <nork@ninth-nine.com>
To: "toxa" <postfix@sendmail.ru>
Cc: <freebsd-current@freebsd.org>
Sent: Saturday, December 13, 2003 8:22 PM
Subject: Re: CURRENT state of modules



>
> This is a good question.
>
> 1. usb module has uhci and ochi drivers (and usb bus driver).
>    You cannot use *only* uhci or ochi with usb module.  So
>    uhci_load="YES" or ohci_load="YES" is not available.
>
> 2. device usb is USB Bus driver.  device uhci and ochi is
>    required device usb (USB Bus driver).
>
> ugen -+           +- uhci (Universal Host Controller Interface)
>       |           |
>       +--- usb ---+
>       |           |
> umas -+           +- ohci (Open Host Controller Intereface)
>

So if I understand you properly, I can load usb as module without having
device uhci or device ohci in kernel at all, and 'device ohci/uhci', when
included in the kernel, require 'device usb' in the kernel too because of
required usb bus which is in 'device usb'?
Am I right?

Thank you.