From: Ben Widawsky <ben@bwidawsk.net>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 10/10] drm/i915: Kill off actually requiring AGP
Date: Fri, 26 Oct 2012 13:52:22 -0700 [thread overview]
Message-ID: <20121026135222.1e5d3603@bwidawsk.net> (raw)
In-Reply-To: <20121025224731.GH5691@phenom.ffwll.local>
On Fri, 26 Oct 2012 00:47:31 +0200
Daniel Vetter <daniel@ffwll.ch> wrote:
> On Thu, Oct 25, 2012 at 03:39:08PM -0700, Jesse Barnes wrote:
> > > > It would be cool to actually remove the dep for pre-gen6. I
> > > > don't think we need this patch in either case.
> > > >
> > >
> > > Your linker is going to complain without it, unless I don't
> > > follow your meaning.
> >
> > I mean unless we split the driver into gen6+ and pre-gen6 (with a
> > config option or otherwise), we can't really kill the dependency
> > unless we actually pull the rest of the AGP stuff we need into
> > i915. I'd kind of like to do the latter, but the non-KMS configs
> > would break.
>
> Also, some kms config actually break because we've managed to ship
> userspace that uses kms, but in parts also still uses the legacy
> drmMap api. Which in our case means we need to have a working (but
> fake) agp driver around. This entire thing is one giant mess, but I
> think with the gen6+ stuff moved it's about as good as it will get.
> And I don't mind the old crap too much, we have an entire dungeon
> full of them in i915_dma.c, too ;-)
> -Daniel
The idea (as discussed on IRC) was to provide something like a
CONFIG_GEN6 which will properly detect and error out for older
platforms. This would allow embedded systems to save on the AGP size
when they are trying to store everything in flash.
Anyway, for now, I think we all agree that this is unnecessary, but if
someone building an embedded system with i915 graphics wants to save
roughly 500k of binary data size (and some smaller amount of runtime
memory)...
--
Ben Widawsky, Intel Open Source Technology Center
next prev parent reply other threads:[~2012-10-26 20:52 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-23 1:34 [PATCH 00/10] Kill AGP dependencies for Gen6+ Ben Widawsky
2012-10-23 1:34 ` [PATCH 01/10] drm/i915: No LLC_MLC for HSW Ben Widawsky
2012-10-23 10:15 ` Mika Kuoppala
2012-10-25 20:47 ` Jesse Barnes
2012-10-26 1:03 ` Ben Widawsky
2012-10-23 1:34 ` [PATCH 02/10] drm/i915: Add dev to ppgtt Ben Widawsky
2012-10-25 20:48 ` Jesse Barnes
2012-10-23 1:34 ` [PATCH 03/10] drm/i915: introduce gtt_pte_t Ben Widawsky
2012-10-25 20:49 ` Jesse Barnes
2012-10-23 1:34 ` [PATCH 04/10] drm/i915: Extract PPGTT pte encoding Ben Widawsky
2012-10-25 20:50 ` Jesse Barnes
2012-10-23 1:34 ` [PATCH 05/10] drm/i915: move more pte encoding to pte encode Ben Widawsky
2012-10-25 20:51 ` Jesse Barnes
2012-10-31 10:52 ` Daniel Vetter
2012-10-23 1:34 ` [PATCH 06/10] drm/i915: Stop using AGP layer for GEN6+ Ben Widawsky
2012-10-23 9:59 ` Chris Wilson
2012-10-23 14:57 ` Ben Widawsky
2012-10-23 14:58 ` Daniel Vetter
2012-10-23 19:57 ` Ben Widawsky
2012-10-23 20:03 ` Daniel Vetter
2012-10-23 20:27 ` Ben Widawsky
2012-10-25 20:55 ` Jesse Barnes
2012-10-25 20:54 ` Jesse Barnes
[not found] ` <878vaxwk61.fsf@gaia.fi.intel.com>
2012-10-24 17:56 ` Ben Widawsky
2012-10-26 20:54 ` [PATCH 06/10 v2] " Ben Widawsky
2012-10-29 2:08 ` [PATCH 6/9 v3] " Ben Widawsky
2012-10-31 9:57 ` Daniel Vetter
2012-10-31 15:51 ` Ben Widawsky
2012-10-31 10:37 ` [PATCH 06/10 v2] " Chris Wilson
2012-10-23 1:34 ` [PATCH 07/10] drm/i915: Calculate correct stolen size for GEN7+ Ben Widawsky
2012-10-25 21:06 ` Jesse Barnes
2012-10-25 22:15 ` Ben Widawsky
2012-10-25 22:39 ` Jesse Barnes
2012-10-23 1:34 ` [PATCH 08/10] drm/i915: Kill off now unused gen6+ AGP code Ben Widawsky
2012-10-25 21:07 ` Jesse Barnes
2012-10-23 1:34 ` [PATCH 09/10] drm/i915: flush system agent TLBs on SNB Ben Widawsky
2012-10-23 14:17 ` Jesse Barnes
2012-10-23 14:28 ` Daniel Vetter
2012-10-23 14:35 ` Jesse Barnes
2012-10-23 14:42 ` Ben Widawsky
2012-10-25 21:07 ` Jesse Barnes
2012-10-26 20:55 ` [PATCH 09/10 v2] " Ben Widawsky
2012-10-23 1:34 ` [PATCH 10/10] drm/i915: Kill off actually requiring AGP Ben Widawsky
2012-10-23 2:03 ` Ben Widawsky
2012-10-25 21:09 ` Jesse Barnes
2012-10-25 22:15 ` Ben Widawsky
2012-10-25 22:39 ` Jesse Barnes
2012-10-25 22:47 ` Daniel Vetter
2012-10-26 20:52 ` Ben Widawsky [this message]
2012-10-26 20:58 ` [PATCH 00/10] Kill AGP dependencies for Gen6+ Ben Widawsky
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