drm/xe/mtl: Add some initial MTL workarounds

This adds a handful of workarounds that apply to production steppings of
MTL:
 - Wa_14018575942
 - Wa_22016670082
 - Wa_14017856879
 - Wa_18019271663

Wa_22016670082 is currently only applied to the primary GT at the
moment, but may need to be extended to the media GT in the future if a
pending update to the workaround database gets finalized.

OOB workarounds will need to be implemented separately in future patches
for Wa_14016712196, Wa_16018063123, and Wa_18013179988.
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://lore.kernel.org/r/20230608181217.2385932-1-matthew.d.roper@intel.comSigned-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/regs/xe_gt_regs.h

@@ -133,6 +133,9 @@
 #define VFG_PREEMPTION_CHICKEN			XE_REG(0x83b4, XE_REG_OPTION_MASKED)
 #define   POLYGON_TRIFAN_LINELOOP_DISABLE	REG_BIT(4)
 
+#define SQCNT1					XE_REG_MCR(0x8718)
+#define   ENFORCE_RAR				REG_BIT(23)
+
 #define XEHP_SQCM				XE_REG_MCR(0x8724)
 #define   EN_32B_ACCESS				REG_BIT(30)
 
@@ -268,7 +271,9 @@
 #define RENDER_MOD_CTRL				XE_REG_MCR(0xcf2c)
 #define COMP_MOD_CTRL				XE_REG_MCR(0xcf30)
 #define XEHP_VDBX_MOD_CTRL			XE_REG_MCR(0xcf34)
+#define XELPMP_VDBX_MOD_CTRL			XE_REG(0xcf34)
 #define XEHP_VEBX_MOD_CTRL			XE_REG_MCR(0xcf38)
+#define XELPMP_VEBX_MOD_CTRL			XE_REG(0xcf38)
 #define   FORCE_MISS_FTLB			REG_BIT(3)
 
 #define XEHP_GAMSTLB_CTRL			XE_REG_MCR(0xcf4c)
@@ -302,6 +307,9 @@
 #define   THREAD_EX_ARB_MODE			REG_GENMASK(3, 2)
 #define   THREAD_EX_ARB_MODE_RR_AFTER_DEP	REG_FIELD_PREP(THREAD_EX_ARB_MODE, 0x2)
 
+#define ROW_CHICKEN3				XE_REG_MCR(0xe49c, XE_REG_OPTION_MASKED)
+#define   DIS_FIX_EOT1_FLUSH			REG_BIT(9)
+
 #define ROW_CHICKEN				XE_REG_MCR(0xe4f0, XE_REG_OPTION_MASKED)
 #define   UGM_BACKUP_MODE			REG_BIT(13)
 #define   MDQ_ARBITRATION_MODE			REG_BIT(12)

drivers/gpu/drm/xe/xe_wa.c

@@ -236,6 +236,22 @@ static const struct xe_rtp_entry_sr gt_was[] = {
 	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1270, 1271), GRAPHICS_STEP(A0, B0)),
 	  XE_RTP_ACTIONS(CLR(MISCCPCTL, DOP_CLOCK_GATE_RENDER_ENABLE))
 	},
+	{ XE_RTP_NAME("14018575942"),
+	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1270, 1271)),
+	  XE_RTP_ACTIONS(SET(RENDER_MOD_CTRL, FORCE_MISS_FTLB),
+			 SET(COMP_MOD_CTRL, FORCE_MISS_FTLB))
+	},
+	{ XE_RTP_NAME("22016670082"),
+	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1270, 1271)),
+	  XE_RTP_ACTIONS(SET(SQCNT1, ENFORCE_RAR))
+	},
+
+	/* Xe_LPM+ */
+	{ XE_RTP_NAME("14018575942"),
+	  XE_RTP_RULES(MEDIA_VERSION(1300)),
+	  XE_RTP_ACTIONS(SET(XELPMP_VDBX_MOD_CTRL, FORCE_MISS_FTLB),
+			 SET(XELPMP_VEBX_MOD_CTRL, FORCE_MISS_FTLB))
+	},
 
 	{}
 };
@@ -502,6 +518,14 @@ static const struct xe_rtp_entry_sr engine_was[] = {
 		       GRAPHICS_STEP(B0, C0)),
 	  XE_RTP_ACTIONS(SET(CACHE_MODE_SS, DISABLE_ECC))
 	},
+
+	/* Xe_LPG */
+	{ XE_RTP_NAME("14017856879"),
+	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1270, 1271),
+		       FUNC(xe_rtp_match_first_render_or_compute)),
+	  XE_RTP_ACTIONS(SET(ROW_CHICKEN3, DIS_FIX_EOT1_FLUSH))
+	},
+
 	{}
 };
 
@@ -580,6 +604,13 @@ static const struct xe_rtp_entry_sr lrc_was[] = {
 	  XE_RTP_RULES(PLATFORM(DG2)),
 	  XE_RTP_ACTIONS(SET(CACHE_MODE_1, MSAA_OPTIMIZATION_REDUC_DISABLE))
 	},
+
+	/* Xe_LPG */
+	{ XE_RTP_NAME("18019271663"),
+	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1270, 1271)),
+	  XE_RTP_ACTIONS(SET(CACHE_MODE_1, MSAA_OPTIMIZATION_REDUC_DISABLE))
+	},
+
 	{}
 };