Date: Sun, 13 Aug 2006 15:03:48 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: nike_d@cytexbg.com Cc: freebsd-hackers@freebsd.org Subject: Re: linux ioremap equivalent on freebsd Message-ID: <20060813.150348.535841747.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>
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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
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