[Intel-xe] [PATCH V3] drm/xe/xe2: Add workaround 14019449301

[Tejas Upadhyay]

This workaround applies to Xe2_LPM

V3(MattR):
  - Reorder reg and wa placement
  - Add base parameter to reg macro for better definition
V2(MattR):
  - Change name of register
  - Loop for all engines
  - Driver permanent WA, applies to all steps

Signed-off-by: Tejas Upadhyay <tejas.upadhyay at intel.com>
---
 drivers/gpu/drm/xe/regs/xe_engine_regs.h | 3 +++
 drivers/gpu/drm/xe/xe_wa.c               | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/xe/regs/xe_engine_regs.h b/drivers/gpu/drm/xe/regs/xe_engine_regs.h
index b57dec17eb2d..0035cfb89cf2 100644
--- a/drivers/gpu/drm/xe/regs/xe_engine_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_engine_regs.h
@@ -112,6 +112,9 @@
 #define RING_EXECLIST_CONTROL(base)		XE_REG((base) + 0x550)
 #define	  EL_CTRL_LOAD				REG_BIT(0)
 
+#define VDBOX_CGCTL3F08(base)			XE_REG((base) + 0x3f08)
+#define   CG3DDISHRS_CLKGATE_DIS		REG_BIT(5)
+
 #define VDBOX_CGCTL3F10(base)			XE_REG((base) + 0x3f10)
 #define   IECPUNIT_CLKGATE_DIS			REG_BIT(22)
 
diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
index d03e6674519f..aea03a56c797 100644
--- a/drivers/gpu/drm/xe/xe_wa.c
+++ b/drivers/gpu/drm/xe/xe_wa.c
@@ -273,6 +273,14 @@ static const struct xe_rtp_entry_sr gt_was[] = {
 			 SET(XEHPC_L3CLOS_MASK(3), ~0))
 	},
 
+	/* Xe2_LPM */
+
+	{ XE_RTP_NAME("14019449301"),
+	  XE_RTP_RULES(MEDIA_VERSION(2000), ENGINE_CLASS(VIDEO_DECODE)),
+	  XE_RTP_ACTIONS(SET(VDBOX_CGCTL3F08(0), CG3DDISHRS_CLKGATE_DIS)),
+	  XE_RTP_ENTRY_FLAG(FOREACH_ENGINE),
+	},
+
 	{}
 };
 
-- 
2.25.1