Date: Tue, 29 Nov 2011 13:04:14 -0500 From: Jung-uk Kim <jkim@FreeBSD.org> To: freebsd-x11@FreeBSD.org, gljennjohn@googlemail.com Cc: Luigi Rizzo <rizzo@iet.unipi.it> Subject: Re: suggested xorg-compatible video HW for FreeBSD/amd64 ? Message-ID: <201111291304.15998.jkim@FreeBSD.org> In-Reply-To: <20111129100035.24025c26@ernst.jennejohn.org> References: <20111128092008.GA58668@onelab2.iet.unipi.it> <alpine.BSF.2.00.1111281838240.12923@wonkity.com> <20111129100035.24025c26@ernst.jennejohn.org>
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On Tuesday 29 November 2011 04:00 am, Gary Jennejohn wrote: > On Mon, 28 Nov 2011 18:46:23 -0700 (MST) > > Warren Block <wblock@wonkity.com> wrote: > > On Mon, 28 Nov 2011, Kevin Oberman wrote: > > > Just a quick reminder as it seems to be forgotten too > > > often...radeonhd has not been supported or updated in a long > > > time and is generally a bad choice. Modern Radeon (4xxx) is > > > supported much better with the ati driver which is still > > > getting some love. > > > > > > Since Radeon is open-source, you might expect good support, but > > > it also depends on kernel mode setting and requires custom KMS > > > DRI code in the kernel which I am not sure anyone is working on > > > for FreeBSD. > > > > > > Maybe when the Intel KMS is completed... > > > > The Foundation has expressed interest in funding someone to work > > on it. http://forums.freebsd.org/showthread.php?t=27255 > > > > Spread the word. > > > > Kostik Belousov has said he won't be workin on the radeon driver. > > Don't know why. If anyone can be found to work on it, I'm pretty > > sure a bunch of people would be willing to individually > > contribute additional funding or hardware. > > I don't think he wants to take on TTM. Could also be that he > doesn't have any hardware, which would IMO be a major problem for > whomever takes this on considering the rate at which AMD/ATI brings > new chips to market. High-end cards, which are usually the first > to market, can be quite expensive. I believe major hurdle is porting TTM but the future of this API is not so bright. In fact, X.org ATI driver uses GEM API now and it is internally mapped to TTM calls by Linux DRM (aka "GEM-ified TTM manager"). Unfortunately, as always, I don't see clear plans from Linux/X.org developers. I can only guess few possibilities. 1. Linux/X.org folks drop GEM-ified TTM and use native GEM calls. 2. Linux/X.org folks drop GEM-ified TTM and use native TTM calls. 3. Linux/X.org folks re-invent new wheels (again). 4. No change. My guess is #1 is most likely scenario in the near future. Even if Linux/X.org folks don't do it, we may be able to implement it without TTM because X.org ATI driver uses GEM API already and we do not have AMD/ATI Catalyst driver for FreeBSD anyway. So, I guess we have two choices ATM: 1. Fully porting TTM, GEM-ified TTM, and KMS. 2. Replacing GEM-ified TTM with GEM and porting KMS. BTW, I am not volunteering. ;-) Jung-uk Kim
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