[PATCH v3 1/1] drm/xe/xe2: Introduce performance changes

[Akshata Jahagirdar]

Add Compression Performance Improvement Changes in Xe2

v2: Rebase

v3: Rebase, updated as per latest changes on bspec,
    Removed unnecessary default actions (Matt)
    formatting nits (Tejas)

v4: Formatting nits, removed default set action for bit 14 (Matt)

Bspec: 72161
Signed-off-by: Akshata Jahagirdar <akshata.jahagirdar at intel.com>
---
 drivers/gpu/drm/xe/regs/xe_gt_regs.h | 3 +++
 drivers/gpu/drm/xe/xe_tuning.c       | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
index 3b87f95f9ecf..c50643ab4c84 100644
--- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
@@ -367,6 +367,9 @@
 #define XEHP_L3NODEARBCFG			XE_REG_MCR(0xb0b4)
 #define   XEHP_LNESPARE				REG_BIT(19)
 
+#define L3SQCREG2				XE_REG_MCR(0xb104)
+#define   COMPMEMRD256BOVRFETCHEN		REG_BIT(20)
+
 #define L3SQCREG3				XE_REG_MCR(0xb108)
 #define   COMPPWOVERFETCHEN			REG_BIT(28)
 
diff --git a/drivers/gpu/drm/xe/xe_tuning.c b/drivers/gpu/drm/xe/xe_tuning.c
index 77d4eec0118d..3817b7743b0c 100644
--- a/drivers/gpu/drm/xe/xe_tuning.c
+++ b/drivers/gpu/drm/xe/xe_tuning.c
@@ -45,6 +45,11 @@ static const struct xe_rtp_entry_sr gt_tunings[] = {
 	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(2001, XE_RTP_END_VERSION_UNDEFINED)),
 	  XE_RTP_ACTIONS(SET(L3SQCREG3, COMPPWOVERFETCHEN))
 	},
+	{ XE_RTP_NAME("Tuning: L2 Overfetch Compressible Only"),
+	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(2001, XE_RTP_END_VERSION_UNDEFINED)),
+	  XE_RTP_ACTIONS(SET(L3SQCREG2,
+			     COMPMEMRD256BOVRFETCHEN))
+	},
 	{}
 };
 
-- 
2.34.1