[PATCH 06/15] drm/xe: Add xe_hw_engine_write_ring_tail
Matthew Brost
matthew.brost at intel.com
Thu Jun 5 15:32:14 UTC 2025
ULLS for migration jobs need to directly set hw engine ring tail, add
function to support this.
Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
drivers/gpu/drm/xe/xe_hw_engine.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index 3439c8522d01..5ab024743504 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -304,6 +304,16 @@ void xe_hw_engine_mmio_write32(struct xe_hw_engine *hwe,
xe_mmio_write32(&hwe->gt->mmio, reg, val);
}
+/**
+ * xe_hw_engine_write_ring_tail() - Write ring tail
+ * @hwe: engine
+ * @val: desired 32-bit value to write
+ */
+void xe_hw_engine_write_ring_tail(struct xe_hw_engine *hwe, u32 val)
+{
+ xe_hw_engine_mmio_write32(hwe, RING_TAIL(0), val);
+}
+
/**
* xe_hw_engine_mmio_read32() - Read engine register
* @hwe: engine
--
2.34.1
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