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Message-ID: <20130409172820.GC27612@phenom.ffwll.local>
Date: Tue, 9 Apr 2013 19:28:20 +0200
From: Daniel Vetter <daniel@...ll.ch>
To: Richard Cochran <richardcochran@...il.com>
Cc: Tomas Melin <tomas.melin@....fi>, linux-kernel@...r.kernel.org,
dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>
Subject: Re: Re: drm/i915: new warning (regression) in 3.7.10 and 3.8.3
On Tue, Apr 09, 2013 at 03:21:35PM +0200, Richard Cochran wrote:
> On Tue, Apr 09, 2013 at 02:50:03PM +0200, Daniel Vetter wrote:
> >
> > This should be fixed with the above mentioned patch. The issue is that the
> > bios fumbles around with the output configuration behind our backs, so the
> > new paranoid modeset code in 3.7+ freaks out about the state mismatch
> > between sw and hw.
> >
> > The patch above should detect this situation and undo any bios-induced
> > damage.
>
> Even with the patch, I still am seeing the issue (in 3.8).
Indeed, there's still a bug there with the state checking. Can you please
test the below patch?
Thanks, Daniel
commit d206df2685801a832a728c7dca13428a6f5bf3ef
Author: Daniel Vetter <daniel.vetter@...ll.ch>
Date: Tue Apr 9 19:25:12 2013 +0200
drm/i915: don't check inconstent modeset state when force-restoring
It will be only consistent once we've restored all the crtcs. Since a
bunch of other callers also want to just restore a single crtc, add a
boolean to disable checking only where it doesn't make sense.
Note that intel_modeset_setup_hw_state already has a call to
intel_modeset_check_state at the end, so we don't reduce the amount of
checking.
References: https://lkml.org/lkml/2013/3/16/60
Cc: Tomas Melin <tomas.melin@....fi>
Cc: Richard Cochran <richardcochran@...il.com>
Cc: stable@...r.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@...ll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8809813..1e29201 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7916,9 +7916,9 @@ intel_modeset_check_state(struct drm_device *dev)
}
}
-int intel_set_mode(struct drm_crtc *crtc,
- struct drm_display_mode *mode,
- int x, int y, struct drm_framebuffer *fb)
+static int __intel_set_mode(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ int x, int y, struct drm_framebuffer *fb)
{
struct drm_device *dev = crtc->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
@@ -8012,8 +8012,6 @@ done:
if (ret && crtc->enabled) {
crtc->hwmode = *saved_hwmode;
crtc->mode = *saved_mode;
- } else {
- intel_modeset_check_state(dev);
}
out:
@@ -8022,9 +8020,27 @@ out:
return ret;
}
-void intel_crtc_restore_mode(struct drm_crtc *crtc)
+int intel_set_mode(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ int x, int y, struct drm_framebuffer *fb)
+{
+ int ret;
+
+ ret = __intel_set_mode(crtc, mode, x, y, fb);
+
+ if (ret == 0)
+ intel_modeset_check_state(crtc->dev);
+
+ return ret;
+}
+
+void intel_crtc_restore_mode(struct drm_crtc *crtc,
+ bool check)
{
- intel_set_mode(crtc, &crtc->mode, crtc->x, crtc->y, crtc->fb);
+ __intel_set_mode(crtc, &crtc->mode, crtc->x, crtc->y, crtc->fb);
+
+ if (check)
+ intel_modeset_check_state(crtc->dev);
}
#undef for_each_intel_crtc_masked
@@ -9336,7 +9352,7 @@ setup_pipes:
for_each_pipe(pipe) {
struct drm_crtc *crtc =
dev_priv->pipe_to_crtc_mapping[pipe];
- intel_crtc_restore_mode(crtc);
+ intel_crtc_restore_mode(crtc, false);
}
list_for_each_entry(plane, &dev->mode_config.plane_list, head)
intel_plane_restore(plane);
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 173add1..99b9f09 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2466,7 +2466,7 @@ intel_dp_set_property(struct drm_connector *connector,
done:
if (intel_encoder->base.crtc)
- intel_crtc_restore_mode(intel_encoder->base.crtc);
+ intel_crtc_restore_mode(intel_encoder->base.crtc, true);
return 0;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index d7bd031..d7b1094 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -540,7 +540,7 @@ struct intel_set_config {
extern int intel_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
int x, int y, struct drm_framebuffer *old_fb);
extern void intel_modeset_disable(struct drm_device *dev);
-extern void intel_crtc_restore_mode(struct drm_crtc *crtc);
+extern void intel_crtc_restore_mode(struct drm_crtc *crtc, bool check);
extern void intel_crtc_load_lut(struct drm_crtc *crtc);
extern void intel_crtc_update_dpms(struct drm_crtc *crtc);
extern void intel_encoder_destroy(struct drm_encoder *encoder);
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index ee4a8da..de07bd4 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -942,7 +942,7 @@ intel_hdmi_set_property(struct drm_connector *connector,
done:
if (intel_dig_port->base.base.crtc)
- intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
+ intel_crtc_restore_mode(intel_dig_port->base.base.crtc, true);
return 0;
}
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index ca2d903..4e80e76 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -666,7 +666,7 @@ static int intel_lvds_set_property(struct drm_connector *connector,
* If the CRTC is enabled, the display will be changed
* according to the new panel fitting mode.
*/
- intel_crtc_restore_mode(crtc);
+ intel_crtc_restore_mode(crtc, true);
}
}
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index f6a9f4a..777d0d4 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -2044,7 +2044,7 @@ set_value:
done:
if (intel_sdvo->base.base.crtc)
- intel_crtc_restore_mode(intel_sdvo->base.base.crtc);
+ intel_crtc_restore_mode(intel_sdvo->base.base.crtc, true);
return 0;
#undef CHECK_PROPERTY
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 6673726..bbe2925 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1481,7 +1481,7 @@ intel_tv_set_property(struct drm_connector *connector, struct drm_property *prop
}
if (changed && crtc)
- intel_crtc_restore_mode(crtc);
+ intel_crtc_restore_mode(crtc, true);
out:
return ret;
}
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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