On 7/7/2020 2:52 PM, Michał Winiarski wrote:
From: Michał Winiarski <michal.winiar...@intel.com> Firmware "Selected" state is a transient state - we don't expect to see it after finishing driver probe, we even have asserts sprinkled over i915 to confirm whether that's the case. Unfortunately - we don't handle the transition out of "Selected" in case of GuC fetch error, leading those asserts to fire when calling "intel_huc_is_used()". Reported-by: Marcin Bernatowicz <marcin.bernatow...@intel.com> Signed-off-by: Michał Winiarski <michal.winiar...@intel.com> Cc: Chris Wilson <ch...@chris-wilson.co.uk> Cc: Daniele Ceraolo Spurio <daniele.ceraolospu...@intel.com> Cc: Marcin Bernatowicz <marcin.bernatow...@intel.com> Cc: Michal Wajdeczko <michal.wajdec...@intel.com> --- drivers/gpu/drm/i915/gt/uc/intel_uc.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c index 1c2d6358826c..993e9755f317 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c @@ -267,8 +267,14 @@ static void __uc_fetch_firmwares(struct intel_uc *uc) GEM_BUG_ON(!intel_uc_wants_guc(uc));err = intel_uc_fw_fetch(&uc->guc.fw);- if (err) + if (err) { + /* Make sure we transition out of transient "SELECTED" state */ + if (intel_uc_wants_huc(uc)) + intel_uc_fw_change_status(&uc->huc.fw, + INTEL_UC_FIRMWARE_ERROR);
I think that a debug message saying that we're disabling HuC because GuC FW was not found would be useful to make it clear that the error is not related to the HuC blob itself.
+ return; + }if (intel_uc_wants_huc(uc))intel_uc_fw_fetch(&uc->huc.fw);
It looks like this function could use a bit of rework for better onion unwinding because if we fail to fetch the HuC and we don't want GuC submission we should disable the GuC.
That's not an issue with this patch, so with the added debug log: Reviewed-by: Daniele Ceraolo Spurio<daniele.ceraolospu...@intel.com> Daniele _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
