From: Daniel Vetter <daniel@ffwll.ch>
To: Intel Graphics Development <intel-gfx@lists.freedesktop.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Subject: Re: [PATCH 4/4] drm/i915: enable forcewake voodoo also for gen6
Date: Mon, 30 Jan 2012 23:33:43 +0100 [thread overview]
Message-ID: <20120130223343.GG4360@phenom.ffwll.local> (raw)
In-Reply-To: <1327496640-6735-4-git-send-email-daniel.vetter@ffwll.ch>
On Wed, Jan 25, 2012 at 02:04:00PM +0100, Daniel Vetter wrote:
> We still have reports of missed irqs even on Sandybridge with the
> HWSTAM workaround in place. Testing by the bug reporter gets rid of
> them with the forcewake voodoo and no HWSTAM writes.
>
> Because I've slightly botched the rebasing I've left out the ACTHD
> readback which is also required to get IVB working. Seems to still
> work on the tester's machine, so I think we should go with the more
> minmal approach on SNB. Especially since I've only found weak evidence
> for holding forcewake while waiting for an interrupt to arrive, but
> none for the ACTHD readback.
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45181
> Tested-by: Nicolas Kalkhof nkalkhof()at()web.de
> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Another bug reporter just confirmed that this patch gets rid of 'missed
IRQ?' quasi-hangs on snb. Unfortunately there's still another bug left to
squash, which hangs the gpu ...
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45332
--
Daniel Vetter
Mail: daniel@ffwll.ch
Mobile: +41 (0)79 365 57 48
next prev parent reply other threads:[~2012-01-30 22:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-25 13:03 [PATCH 1/4] drm/i915: outstanding_lazy_request is a u32 Daniel Vetter
2012-01-25 13:03 ` [PATCH 2/4] drm/i915: fixup seqno allocation logic for lazy_request Daniel Vetter
2012-01-25 14:17 ` Chris Wilson
2012-01-25 15:32 ` [PATCH] " Daniel Vetter
2012-01-25 15:46 ` Chris Wilson
2012-01-26 13:55 ` Daniel Vetter
2012-01-25 13:03 ` [PATCH 3/4] drm/i915: adjust ring->add_request to no longer pass back the seqno Daniel Vetter
2012-01-25 15:33 ` [PATCH] " Daniel Vetter
2012-01-25 13:04 ` [PATCH 4/4] drm/i915: enable forcewake voodoo also for gen6 Daniel Vetter
2012-01-30 22:33 ` Daniel Vetter [this message]
2012-02-08 10:00 ` Chris Wilson
2012-02-13 10:00 ` Daniel Vetter
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