Date: Sun, 09 Apr 2006 18:53:35 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: mwm-keyword-freebsdhackers.102a7e@mired.org Cc: hackers@freebsd.org, babkin@users.sourceforge.net, ceri@submonkey.net, scottl@samsco.org Subject: Re: What's in a (device) name? Message-ID: <20060409.185335.105395062.imp@bsdimp.com> In-Reply-To: <17465.32905.727289.260996@bhuda.mired.org> References: <9399827.1657341144611794358.JavaMail.root@vms070.mailsrvcs.net> <17465.32905.727289.260996@bhuda.mired.org>
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In message: <17465.32905.727289.260996@bhuda.mired.org>
Mike Meyer <mwm-keyword-freebsdhackers.102a7e@mired.org> writes:
: The major problem with it is that todays bus architectures don't have
: stable device addresses. Instead of devices having a fixed address on
: the bus that the user sets, the addresses are assigned as the devices
: are discovered. This is pretty much a requirement if you want to sell
: hardware to 12:00 flashers. While that's not the market that FreeBSD
: deals with, it is the hardware that FreeBSD runs on.
usb assigns addresses dynamically. Everyone else does it basically
statically. PCI slot/device numbers are static, but extreme
configurations can change the bus number.
Warner
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