diff mbox

[1/2] drm/i915: Do a fuller init after reset

Message ID 1381770097-1450-1-git-send-email-benjamin.widawsky@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ben Widawsky Oct. 14, 2013, 5:01 p.m. UTC
From: Ben Widawsky <ben@bwidawsk.net>

I had this lying around from he original PPGTT series, and thought we
might try to get it in by itself.

It's convenient to just call i915_gem_init_hw at reset because we'll be
adding new things to that function, and having just one function to call
instead of reimplementing it in two places is nice.

In order to accommodate we cleanup ringbuffers in order to bring them
back up cleanly. Optionally, we could also teardown/re initialize the
default context but this was causing some problems on reset which I
wasn't able to fully debug, and is unnecessary with the previous context
init/enable split.

This essentially reverts:
commit 8e88a2bd5987178d16d53686197404e149e996d9
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Jun 19 18:40:00 2012 +0200

    drm/i915: don't call modeset_init_hw in i915_reset

It seems to work for me on ILK now. Perhaps it's due to:
commit 8a5c2ae753c588bcb2a4e38d1c6a39865dbf1ff3
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Thu Mar 28 13:57:19 2013 -0700

    drm/i915: fix ILK GPU reset for render

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_drv.c         | 29 ++++++++---------------------
 drivers/gpu/drm/i915/i915_gem.c         |  2 ++
 drivers/gpu/drm/i915/intel_ringbuffer.c |  4 +++-
 3 files changed, 13 insertions(+), 22 deletions(-)

Comments

Chris Wilson Oct. 14, 2013, 9:24 p.m. UTC | #1
On Mon, Oct 14, 2013 at 10:01:36AM -0700, Ben Widawsky wrote:
> From: Ben Widawsky <ben@bwidawsk.net>
> 
> I had this lying around from he original PPGTT series, and thought we
> might try to get it in by itself.

This conflicts with Mika's work to replay pending operations after the
reset. But I wholeheartedly agree with just being able to call
init_hw(). I'd suggest we punt this todo task to Mika :)
-Chris
Ben Widawsky Oct. 14, 2013, 10:07 p.m. UTC | #2
On Mon, Oct 14, 2013 at 10:24:17PM +0100, Chris Wilson wrote:
> On Mon, Oct 14, 2013 at 10:01:36AM -0700, Ben Widawsky wrote:
> > From: Ben Widawsky <ben@bwidawsk.net>
> > 
> > I had this lying around from he original PPGTT series, and thought we
> > might try to get it in by itself.
> 
> This conflicts with Mika's work to replay pending operations after the
> reset. But I wholeheartedly agree with just being able to call
> init_hw(). I'd suggest we punt this todo task to Mika :)
> -Chris
> 

The patch is 4 months old, and I didn't really do much other than
resolve conflicts and basic tests. Also hopefully there is nothing
fundamentally wrong with this so that he can't do that - it helps me in
the long run with ppgtt a bit.

I'll add Mika to the CC so he doesn't miss it, hopefully we needn't wait
for him.
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 59649c0..db84e24 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -744,30 +744,17 @@  int i915_reset(struct drm_device *dev)
 	 */
 	if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 			!dev_priv->ums.mm_suspended) {
-		struct intel_ring_buffer *ring;
-		int i;
-
+		bool hw_contexts_disabled = dev_priv->hw_contexts_disabled;
 		dev_priv->ums.mm_suspended = 0;
 
-		i915_gem_init_swizzling(dev);
-
-		for_each_ring(ring, dev_priv, i)
-			ring->init(ring);
-
-		i915_gem_context_init(dev);
-		if (dev_priv->mm.aliasing_ppgtt) {
-			ret = dev_priv->mm.aliasing_ppgtt->enable(dev);
-			if (ret)
-				i915_gem_cleanup_aliasing_ppgtt(dev);
-		}
-
-		/*
-		 * It would make sense to re-init all the other hw state, at
-		 * least the rps/rc6/emon init done within modeset_init_hw. For
-		 * some unknown reason, this blows up my ilk, so don't.
-		 */
-
+		ret = i915_gem_init_hw(dev);
+		if (!hw_contexts_disabled && dev_priv->hw_contexts_disabled)
+			DRM_ERROR("HW contexts didn't survive reset\n");
 		mutex_unlock(&dev->struct_mutex);
+		if (ret) {
+			DRM_ERROR("Failed hw init on reset %d\n", ret);
+			return ret;
+		}
 
 		drm_irq_uninstall(dev);
 		drm_irq_install(dev);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index c3f81c6..e57458e 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2406,6 +2406,8 @@  void i915_gem_reset(struct drm_device *dev)
 	for_each_ring(ring, dev_priv, i)
 		i915_gem_reset_ring_lists(dev_priv, ring);
 
+	i915_gem_cleanup_ringbuffer(dev);
+
 	i915_gem_restore_fences(dev);
 }
 
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 4e108fc..2dec134 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1324,7 +1324,7 @@  void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring)
 	/* Disable the ring buffer. The ring must be idle at this point */
 	dev_priv = ring->dev->dev_private;
 	ret = intel_ring_idle(ring);
-	if (ret)
+	if (ret && !i915_reset_in_progress(&dev_priv->gpu_error))
 		DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n",
 			  ring->name, ret);
 
@@ -1335,6 +1335,8 @@  void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring)
 	i915_gem_object_unpin(ring->obj);
 	drm_gem_object_unreference(&ring->obj->base);
 	ring->obj = NULL;
+	ring->preallocated_lazy_request = NULL;
+	ring->outstanding_lazy_seqno = 0;
 
 	if (ring->cleanup)
 		ring->cleanup(ring);