From owner-freebsd-hackers@FreeBSD.ORG  Sun Aug 13 21:04:16 2006
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
X-Original-To: freebsd-hackers@freebsd.org
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id A890E16A4E1
	for <freebsd-hackers@freebsd.org>; Sun, 13 Aug 2006 21:04:16 +0000 (UTC)
	(envelope-from imp@bsdimp.com)
Received: from harmony.bsdimp.com (vc4-2-0-87.dsl.netrack.net [199.45.160.85])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 3742C43D45
	for <freebsd-hackers@freebsd.org>; Sun, 13 Aug 2006 21:04:16 +0000 (GMT)
	(envelope-from imp@bsdimp.com)
Received: from localhost (localhost.village.org [127.0.0.1] (may be forged))
	by harmony.bsdimp.com (8.13.4/8.13.4) with ESMTP id k7DL3c07044827;
	Sun, 13 Aug 2006 15:03:38 -0600 (MDT) (envelope-from imp@bsdimp.com)
Date: Sun, 13 Aug 2006 15:03:48 -0600 (MDT)
Message-Id: <20060813.150348.535841747.imp@bsdimp.com>
To: nike_d@cytexbg.com
From: "M. Warner Losh" <imp@bsdimp.com>
In-Reply-To: <200608071735.43462.nike_d@cytexbg.com>
References: <44D735E5.4030809@FreeBSD.org>
	<200608071628.15316.nike_d@cytexbg.com>
	<200608071735.43462.nike_d@cytexbg.com>
X-Mailer: Mew version 4.2 on Emacs 21.3 / Mule 5.0 (SAKAKI)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0
	(harmony.bsdimp.com [127.0.0.1]);
	Sun, 13 Aug 2006 15:03:38 -0600 (MDT)
Cc: freebsd-hackers@freebsd.org
Subject: Re: linux ioremap equivalent on freebsd
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 13 Aug 2006 21:04:16 -0000

In message: <200608071735.43462.nike_d@cytexbg.com>
            Niki Denev <nike_d@cytexbg.com> writes:
: On Monday 07 August 2006 16:28, Niki Denev wrote:
: > On Monday 07 August 2006 15:45, Suleiman Souhlal wrote:
: > >
: > > I think the equivalent of linux's ioremap() in FreeBSD is pmap_mapdev().
: > >
: > > -- Suleiman
: >
: > Thanks!
: >
: > Is there a reason that there is no manual page about pmap_mapdev, and it's
: > not mentioned in the other pmap_* man pages?
: >
: 
: As far as i understand, there is no need for pmap_mapdev to be used for 
: reading memory from pci device, because it returns the same address as 
: pmap_get_virtual() ? (at least here :) ) Is this right?

Unless you are mapping very large areas, bus_alloc_resource +
rman_get_virtual is the right answer here.

Warner