Re: [PATCH v3] drm/i915: Add Guc/HuC firmware details to error state

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On Fri, 20 Oct 2017 13:44:04 +0200, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:

Quoting Joonas Lahtinen (2017-10-20 10:41:57)
On Thu, 2017-10-19 at 20:23 +0000, Michal Wajdeczko wrote:
> @@ -774,6 +793,11 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
>       err_print_capabilities(m, &error->device_info);
>       err_print_params(m, &error->params);
>
> +     if (error->device_info.has_guc) {
> +             intel_uc_fw_dump(&error->guc_fw, &p);
> +             intel_uc_fw_dump(&error->huc_fw, &p);
> +     }

I might use "error->{g,h}uc_fw.path" as the condition, for both
individually. We will have DMC here in the future, too.

That's the type of predicate I was looking for. If we can tell when the
fw has been loaded just by looking at the uc_fw struct, please do so.

If you want to include uc fw info only when fw was loaded at capture moment,
then we can look directly at its "load_status" field:

	if (error->guc_fw.load_status == INTEL_UC_FIRMWARE_SUCCESS)

But what if fw was loaded earlier, before error capture is started?
Don't we want to capture whole driver configuration?

Michal
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