On Fri, Aug 07, 2015 at 08:24:15PM +0100, Chris Wilson wrote:
> 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@xxxxxxxxxxxxxxxxxx>
Queued for -next, thanks for the patch.
-Daniel
> ---
> drivers/gpu/drm/i915/i915_drv.h | 1 +
> drivers/gpu/drm/i915/i915_gpu_error.c | 5 +++++
> 2 files changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 786ddd8b4e97..82d225786db2 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -488,6 +488,7 @@ 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 0110c2626859..21ae99e5b1ed 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -399,6 +399,7 @@ 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) {
> @@ -1341,6 +1342,10 @@ 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;
> }
> --
> 2.5.0
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
