[PATCH 5/5] drm/xe/oa: Enable OAM latency measurement

[Ashutosh Dixit]

Enable OAM latency measurement for Xe3+ platforms.

Bspec: 58840

v2: Introduce DRM_XE_OA_UNIT_TYPE_OAM_SAG

Signed-off-by: Ashutosh Dixit <ashutosh.dixit at intel.com>
---
 drivers/gpu/drm/xe/regs/xe_oa_regs.h |  3 +++
 drivers/gpu/drm/xe/xe_oa.c           | 11 ++++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/regs/xe_oa_regs.h b/drivers/gpu/drm/xe/regs/xe_oa_regs.h
index a79ad2da070c2..e693a50706f84 100644
--- a/drivers/gpu/drm/xe/regs/xe_oa_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_oa_regs.h
@@ -97,4 +97,7 @@
 #define OAM_STATUS(base)			XE_REG((base) + OAM_STATUS_OFFSET)
 #define OAM_MMIO_TRG(base)			XE_REG((base) + OAM_MMIO_TRG_OFFSET)
 
+#define OAM_COMPRESSION_T3_CONTROL		XE_REG(0x1c2e00)
+#define  OAM_LAT_MEASURE_ENABLE			REG_BIT(4)
+
 #endif
diff --git a/drivers/gpu/drm/xe/xe_oa.c b/drivers/gpu/drm/xe/xe_oa.c
index 35157424010bb..5aa68bd63b00d 100644
--- a/drivers/gpu/drm/xe/xe_oa.c
+++ b/drivers/gpu/drm/xe/xe_oa.c
@@ -844,6 +844,11 @@ static void xe_oa_disable_metric_set(struct xe_oa_stream *stream)
 
 	/* Reset PMON Enable to save power. */
 	xe_mmio_rmw32(mmio, XELPMP_SQCNT1, sqcnt1, 0);
+
+	if ((stream->oa_unit->type == DRM_XE_OA_UNIT_TYPE_OAM ||
+	     stream->oa_unit->type == DRM_XE_OA_UNIT_TYPE_OAM_SAG) &&
+	    GRAPHICS_VER(stream->oa->xe) >= 30)
+		xe_mmio_rmw32(mmio, OAM_COMPRESSION_T3_CONTROL, OAM_LAT_MEASURE_ENABLE, 0);
 }
 
 static void xe_oa_stream_destroy(struct xe_oa_stream *stream)
@@ -1111,9 +1116,13 @@ static int xe_oa_enable_metric_set(struct xe_oa_stream *stream)
 	 */
 	sqcnt1 = SQCNT1_PMON_ENABLE |
 		 (HAS_OA_BPC_REPORTING(stream->oa->xe) ? SQCNT1_OABPC : 0);
-
 	xe_mmio_rmw32(mmio, XELPMP_SQCNT1, 0, sqcnt1);
 
+	if ((stream->oa_unit->type == DRM_XE_OA_UNIT_TYPE_OAM ||
+	     stream->oa_unit->type == DRM_XE_OA_UNIT_TYPE_OAM_SAG) &&
+	    GRAPHICS_VER(stream->oa->xe) >= 30)
+		xe_mmio_rmw32(mmio, OAM_COMPRESSION_T3_CONTROL, 0, OAM_LAT_MEASURE_ENABLE);
+
 	/* Configure OAR/OAC */
 	if (stream->exec_q) {
 		ret = xe_oa_configure_oa_context(stream, true);
-- 
2.48.1