In case of catastrophic errors GuC is able to initate engine
reset immediately, instead of waiting for timeout.
Signed-off-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
---
Hi all,
I am new in the subject, so please be polite if this is mistake.
Tests shows that it allows to save about 7 seconds on the machine
(Raptor Lake) in case of CAT.
I am not aware of scenario in which would be reasonable to keep
the engine in hung state.
On the other side I am not sure if there should not be constraints
on firmware version.
Regards
Andrzej
---
drivers/gpu/drm/i915/gt/uc/intel_guc.c | 2 +-
drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 27b09ba1d295fc..2adcdf13db1911 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -211,7 +211,7 @@ static u32 guc_ctl_debug_flags(struct intel_guc *guc)
static u32 guc_ctl_feature_flags(struct intel_guc *guc)
{
- u32 flags = 0;
+ u32 flags = GUC_CTL_ENABLE_ENGINE_RESET_ON_CAT;
if (!intel_guc_submission_is_used(guc))
flags |= GUC_CTL_DISABLE_SCHEDULER;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
index e7a7fb450f442a..96f3116e263cdf 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
@@ -109,6 +109,7 @@
#define GUC_CTL_FEATURE 2
#define GUC_CTL_ENABLE_SLPC BIT(2)
+#define GUC_CTL_ENABLE_ENGINE_RESET_ON_CAT BIT(8)
#define GUC_CTL_DISABLE_SCHEDULER BIT(14)
#define GUC_CTL_DEBUG 3
--
2.34.1
