From: Eric Anholt <eric@anholt.net>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: intel-gfx <intel-gfx@lists.freedesktop.org>
Subject: Re: [PATCH 9/9] drm/i915: swizzling support for snb/ivb
Date: Mon, 14 Nov 2011 08:19:54 -0800 [thread overview]
Message-ID: <87lirid6c5.fsf@eliezer.anholt.net> (raw)
In-Reply-To: <CAKMK7uF5=NBNsYSF0WmR0avcyo3=awWfFXiigxqUaLh4-sdEfw@mail.gmail.com>
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On Fri, 11 Nov 2011 21:18:31 +0100, Daniel Vetter <daniel@ffwll.ch> wrote:
> On Fri, Nov 11, 2011 at 20:58, Eric Anholt <eric@anholt.net> wrote:
> > Oh, yeah, swap. Good point, sounds like a plan. If you manage to get
> > reliable swapping of tiled data on 945g, I'll owe you all the beers.
>
> If you mean i945G as in desktop variant, patch 6/9 should fix the
> swizzle detection on that one - it can do bit17 swizzling, too. I'd be
> interested in whether this fixes all the swap issues, if you have that
> machine still around ...
>
> But as I've said there's also the gm45 bug which looks like a part of
> the main memory in not swizzled. On that topic: Do you still remember
> details about that machine where parts of the memory can be
> unswizzled?
The management engine/mismatched dimms issue making "L-shaped" memory
(part dual channel, part single channel) in the 945-gm45 era was never
handled (somewhere in g45-ilk era, there was a reg the BIOS could set
that would make L-shaped memory have consistent swizzling anyway). I
never found precise docs on how to figure out what the shape of the L
was -- I suspect you'd get to find out by poking at things like TOLUD
and experimenting with binding all the pages you can grab to find which
are swizzled.
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next prev parent reply other threads:[~2011-11-14 16:19 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-10 13:17 [PATCH 0/9] gpu hang and swizzle patches Daniel Vetter
2011-11-10 13:17 ` [PATCH 1/9] drm/i915: refactor debugfs open function Daniel Vetter
2011-11-10 19:25 ` Ben Widawsky
2011-11-10 13:18 ` [PATCH 2/9] drm/i915: refactor debugfs create functions Daniel Vetter
2011-11-10 19:26 ` Ben Widawsky
2011-11-10 13:18 ` [PATCH 3/9] drm/i915: add interface to simulate gpu hangs Daniel Vetter
2011-11-10 16:34 ` [PATCH] " Daniel Vetter
2011-12-02 22:21 ` Daniel Vetter
2011-12-03 1:33 ` Chris Wilson
2011-12-05 23:20 ` Ben Widawsky
2011-11-10 13:18 ` [PATCH 4/9] drm/i915: rework dev->first_error locking Daniel Vetter
2011-11-27 19:31 ` [PATCH] " Daniel Vetter
2011-11-10 13:18 ` [PATCH 5/9] drm/i915: destroy existing error_state when simulating a gpu hang Daniel Vetter
2011-11-10 13:18 ` [PATCH 6/9] drm/i915: fix swizzle detection for gen3 Daniel Vetter
2011-11-10 16:36 ` [PATCH] " Daniel Vetter
2011-11-10 13:18 ` [PATCH 7/9] drm/i915: add debugfs file for swizzling information Daniel Vetter
2011-11-10 16:39 ` [PATCH] " Daniel Vetter
2011-11-10 13:18 ` [PATCH 8/9] drm/i915: add gen6+ registers to i915_swizzle_info Daniel Vetter
2011-11-10 13:18 ` [PATCH 9/9] drm/i915: swizzling support for snb/ivb Daniel Vetter
2011-11-11 16:50 ` Eric Anholt
2011-11-11 17:22 ` Daniel Vetter
2011-11-11 19:37 ` Eric Anholt
2011-11-11 19:51 ` Daniel Vetter
2011-11-11 19:58 ` Eric Anholt
2011-11-11 20:18 ` Daniel Vetter
2011-11-14 16:19 ` Eric Anholt [this message]
2011-11-11 0:15 ` [PATCH 0/9] gpu hang and swizzle patches Chris Wilson
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