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drm/i915: Only print an message if there was an error

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Only report an error if the GPU has actually detected one, otherwise we
are just hung.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Chris Wilson 2010-05-27 13:18:12 +01:00 committed by Eric Anholt
parent e20f9c64c7
commit 35aed2e6be
1 changed files with 24 additions and 14 deletions
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38
drivers/gpu/drm/i915/i915_irq.c
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@ -692,24 +692,13 @@ void i915_destroy_error_state(struct drm_device *dev)
i915_error_state_free(dev, error);
}
/**
* i915_handle_error - handle an error interrupt
* @dev: drm device
*
* Do some basic checking of regsiter state at error interrupt time and
* dump it to the syslog. Also call i915_capture_error_state() to make
* sure we get a record and make it available in debugfs. Fire a uevent
* so userspace knows something bad happened (should trigger collection
* of a ring dump etc.).
*/
static void i915_handle_error(struct drm_device *dev, bool wedged)
static void i915_report_and_clear_eir(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 eir = I915_READ(EIR);
u32 pipea_stats = I915_READ(PIPEASTAT);
u32 pipeb_stats = I915_READ(PIPEBSTAT);
i915_capture_error_state(dev);
if (!eir)
return;
printk(KERN_ERR "render error detected, EIR: 0x%08x\n",
eir);
@ -755,6 +744,9 @@ static void i915_handle_error(struct drm_device *dev, bool wedged)
}
if (eir & I915_ERROR_MEMORY_REFRESH) {
u32 pipea_stats = I915_READ(PIPEASTAT);
u32 pipeb_stats = I915_READ(PIPEBSTAT);
printk(KERN_ERR "memory refresh error\n");
printk(KERN_ERR "PIPEASTAT: 0x%08x\n",
pipea_stats);
@ -811,6 +803,24 @@ static void i915_handle_error(struct drm_device *dev, bool wedged)
I915_WRITE(EMR, I915_READ(EMR) | eir);
I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
}
}
/**
* i915_handle_error - handle an error interrupt
* @dev: drm device
*
* Do some basic checking of regsiter state at error interrupt time and
* dump it to the syslog. Also call i915_capture_error_state() to make
* sure we get a record and make it available in debugfs. Fire a uevent
* so userspace knows something bad happened (should trigger collection
* of a ring dump etc.).
*/
static void i915_handle_error(struct drm_device *dev, bool wedged)
{
struct drm_i915_private *dev_priv = dev->dev_private;
i915_capture_error_state(dev);
i915_report_and_clear_eir(dev);
if (wedged) {
atomic_set(&dev_priv->mm.wedged, 1);