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drm/i915: Clear flushing lists on GPU reset 

Owain Ainsworth noticed that the reset code failed to clear the flushing
list leaving the driver in an inconsistent state following a hung GPU.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-09-19 12:21:28 +01:00
parent 9220434a87
commit 9375e446e7
3 changed files with 23 additions and 0 deletions
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6
drivers/gpu/drm/i915/i915_drv.c
View File

@ -385,6 +385,12 @@ int i965_reset(struct drm_device *dev, u8 flags)
*/
i915_gem_retire_requests(dev);
/* Remove anything from the flushing lists. The GPU cache is likely
* to be lost on reset along with the data, so simply move the
* lost bo to the inactive list.
*/
i915_gem_reset_flushing_list(dev);
/*
* Set the domains we want to reset (GRDOM/bits 2 and 3) as
* well as the reset bit (GR/bit 0). Setting the GR bit

1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -997,6 +997,7 @@ int i915_gem_object_get_fence_reg(struct drm_gem_object *obj,
int i915_gem_object_put_fence_reg(struct drm_gem_object *obj,
bool interruptible);
void i915_gem_retire_requests(struct drm_device *dev);
void i915_gem_reset_flushing_list(struct drm_device *dev);
void i915_gem_clflush_object(struct drm_gem_object *obj);
int i915_gem_object_set_domain(struct drm_gem_object *obj,
uint32_t read_domains,

16
drivers/gpu/drm/i915/i915_gem.c
View File

@ -1683,6 +1683,22 @@ i915_get_gem_seqno(struct drm_device *dev,
return ring->get_gem_seqno(dev, ring);
}
void i915_gem_reset_flushing_list(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
while (!list_empty(&dev_priv->mm.flushing_list)) {
struct drm_i915_gem_object *obj_priv;
obj_priv = list_first_entry(&dev_priv->mm.flushing_list,
struct drm_i915_gem_object,
list);
obj_priv->base.write_domain = 0;
i915_gem_object_move_to_inactive(&obj_priv->base);
}
}
/**
* This function clears the request list as sequence numbers are passed.
*/