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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2015-08-07 20:24:15 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-08-14 17:50:41 +0200 |
| commit | eb5be9d0e7e78fd2b9f34c63dd2535ab6f985739 (patch) | |
| tree | 2307042a7d026c1433993d9e4443c14252afaf5f | |
| parent | 031a8936dc660e7ae2485eb7493eba1876cf25fe (diff) | |
| download | lwn-eb5be9d0e7e78fd2b9f34c63dd2535ab6f985739.tar.gz lwn-eb5be9d0e7e78fd2b9f34c63dd2535ab6f985739.zip | |
drm/i915: Report IOMMU enabled status for GPU hangs
The IOMMU for Intel graphics has historically had many issues resulting
in random GPU hangs. Lets include its status when capturing the GPU hang
error state for post-mortem analysis.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gpu_error.c | 5 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index a8ac36dbf24b..5283db90477c 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -484,6 +484,7 @@ struct drm_i915_error_state { struct timeval time; char error_msg[128]; + int iommu; u32 reset_count; u32 suspend_count; diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index 6f4256918f76..41d0739e6fdf 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -369,6 +369,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m, err_printf(m, "Reset count: %u\n", error->reset_count); err_printf(m, "Suspend count: %u\n", error->suspend_count); err_printf(m, "PCI ID: 0x%04x\n", dev->pdev->device); + err_printf(m, "IOMMU enabled?: %d\n", error->iommu); err_printf(m, "EIR: 0x%08x\n", error->eir); err_printf(m, "IER: 0x%08x\n", error->ier); if (INTEL_INFO(dev)->gen >= 8) { @@ -1266,6 +1267,10 @@ static void i915_error_capture_msg(struct drm_device *dev, static void i915_capture_gen_state(struct drm_i915_private *dev_priv, struct drm_i915_error_state *error) { + error->iommu = -1; +#ifdef CONFIG_INTEL_IOMMU + error->iommu = intel_iommu_gfx_mapped; +#endif error->reset_count = i915_reset_count(&dev_priv->gpu_error); error->suspend_count = dev_priv->suspend_count; } |