From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 1/6] drm/i915: Fix gen4 GPU reset
Date: Mon, 24 Nov 2014 14:57:29 +0200 [thread overview]
Message-ID: <20141124125729.GH10649@intel.com> (raw)
In-Reply-To: <20141122110515.GB28099@nuc-i3427.alporthouse.com>
On Sat, Nov 22, 2014 at 11:05:15AM +0000, Chris Wilson wrote:
> On Fri, Nov 21, 2014 at 09:54:25PM +0200, ville.syrjala@linux.intel.com wrote:
> > + /* assert reset for at least 20 usec */
> > + pci_write_config_byte(dev->pdev, I965_GDRST, GRDOM_RESET_ENABLE);
>
> Is this an UC write or do we need to post?
I believe config space writes should always be be non-posted.
>
> > + udelay(20);
> > pci_write_config_byte(dev->pdev, I965_GDRST, 0);
> -Chris
>
> --
> Chris Wilson, Intel Open Source Technology Centre
--
Ville Syrjälä
Intel OTC
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next prev parent reply other threads:[~2014-11-24 12:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-21 19:54 [PATCH 0/6] drm/i915: Implement gen3/4 GPU reset ville.syrjala
2014-11-21 19:54 ` [PATCH 1/6] drm/i915: Fix gen4 " ville.syrjala
2014-11-22 11:05 ` Chris Wilson
2014-11-24 12:57 ` Ville Syrjälä [this message]
2014-11-21 19:54 ` [PATCH 2/6] drm/i915: Restore the display config after a GPU reset on gen4 ville.syrjala
2014-11-21 19:54 ` [PATCH 3/6] drm/i915: Implement GPU reset for 915/945 ville.syrjala
2014-11-25 12:54 ` Daniel Vetter
2014-11-21 19:54 ` [PATCH 4/6] drm/i915: Implement GPU reset for g33 ville.syrjala
2014-11-21 19:54 ` [PATCH 5/6] drm/i915: Grab modeset locks for GPU rest on pre-ctg ville.syrjala
2014-11-21 20:49 ` Daniel Vetter
2014-11-21 21:10 ` Ville Syrjälä
2014-11-24 9:34 ` Daniel Vetter
2014-11-24 13:17 ` Ville Syrjälä
2014-11-24 16:28 ` [PATCH v2 " ville.syrjala
2014-11-21 19:54 ` [PATCH 6/6] drm/i915: Disable crtcs gracefully before GPU reset on gen3/4 ville.syrjala
2014-11-24 10:02 ` [PATCH 6/6] drm/i915: Disable crtcs gracefully before shuang.he
2014-11-24 16:28 ` [PATCH 7/6] drm/i915: Deal with video overlay on GPU reset ville.syrjala
2014-11-25 12:35 ` Daniel Vetter
2014-11-26 15:07 ` [PATCH v2 " ville.syrjala
2014-11-26 18:10 ` Daniel Vetter
2014-11-27 12:04 ` Dave Gordon
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