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From: Hans Petter Selasky <hselasky@c2i.net>
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Date: Thu, 22 Sep 2011 20:07:19 +0200
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Cc: "freebsd-drivers@freebsd.org" <freebsd-drivers@freebsd.org>,
	David Somayajulu <david.somayajulu@qlogic.com>
Subject: Re: Choosing between DELAY(useconds) and pause()
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On Thursday 22 September 2011 19:55:23 David Somayajulu wrote:
> It appears that the pause() function cannot be used in driver functions
> which are invoked early in the boot process. Is there is a kernel api
> which a device driver can use to determine whether to use pause() or
> DELAY(), for delays which are say greater than 10hz - may be even 1 hz ?

Maybe you want to use something like this:

if (cold)
 DELAY()
else
 pause()

In your code.

--HPS