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[v3,4/6] drm/xe: Add helper to capture engine timestamp

Message ID 20240507224510.442971-5-lucas.demarchi@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/xe: Per client usage | expand

Commit Message

Lucas De Marchi May 7, 2024, 10:45 p.m. UTC 
Just like CTX_TIMESTAMP is used to calculate runtime, add a helper to
get the timestamp for the engine so it can be used to calculate the
"engine time" with the same unit as the runtime is recorded.

Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 drivers/gpu/drm/xe/xe_hw_engine.c | 5 +++++
 drivers/gpu/drm/xe/xe_hw_engine.h | 1 +
 2 files changed, 6 insertions(+)
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Patch

diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index de30b74bf253..734f43a35b48 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -1110,3 +1110,8 @@  const char *xe_hw_engine_class_to_str(enum xe_engine_class class)
 
 	return NULL;
 }
+
+u64 xe_hw_engine_read_timestamp(struct xe_hw_engine *hwe)
+{
+	return xe_mmio_read64_2x32(hwe->gt, RING_TIMESTAMP(hwe->mmio_base));
+}
diff --git a/drivers/gpu/drm/xe/xe_hw_engine.h b/drivers/gpu/drm/xe/xe_hw_engine.h
index 843de159e47c..7f2d27c0ba1a 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.h
+++ b/drivers/gpu/drm/xe/xe_hw_engine.h
@@ -68,5 +68,6 @@  static inline bool xe_hw_engine_is_valid(struct xe_hw_engine *hwe)
 }
 
 const char *xe_hw_engine_class_to_str(enum xe_engine_class class);
+u64 xe_hw_engine_read_timestamp(struct xe_hw_engine *hwe);
 
 #endif