[Intel-xe] [PATCH 1/2] drm/xe: Always write GEN12_RCU_MODE.GEN12_RCU_MODE_CCS_ENABLE for CCS engines

Matthew Brost matthew.brost at intel.com
Wed Apr 5 23:34:02 UTC 2023


If CCS0 was fused we did not write this register thus CCS engine were
not enabled resulting in driver load failures.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/xe/xe_hw_engine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index 63a4efd5edcc..4b56c35b988d 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -253,7 +253,7 @@ void xe_hw_engine_enable_ring(struct xe_hw_engine *hwe)
 	u32 ccs_mask =
 		xe_hw_engine_mask_per_class(hwe->gt, XE_ENGINE_CLASS_COMPUTE);
 
-	if (hwe->class == XE_ENGINE_CLASS_COMPUTE && ccs_mask & BIT(0))
+	if (hwe->class == XE_ENGINE_CLASS_COMPUTE && ccs_mask)
 		xe_mmio_write32(hwe->gt, GEN12_RCU_MODE.reg,
 				_MASKED_BIT_ENABLE(GEN12_RCU_MODE_CCS_ENABLE));
 
-- 
2.34.1



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