[PATCH v5] drm/xe/guc: Enable w/a 14022293748 and 22019794406

[Daniele Ceraolo Spurio]

From: Julia Filipchuk <julia.filipchuk at intel.com>

Enable workarounds for HW bug where render engine reset fails. Given
that we're bumping the minimun required GuC version to 70.29, we're
guaranteed to always have support for this KLV in the GuC.

v2: Enable KLV correctly for either workaround (Lucas)
v4: Add check for minimum supported GuC firmware version. Enable w/a for
hw version 20.01 too. (Daniele)
v5 (Daniele): remove now unneeded fw type and version checks (JohnH)

Signed-off-by: Julia Filipchuk <julia.filipchuk at intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: John Harrison <John.C.Harrison at Intel.com>
---
 drivers/gpu/drm/xe/abi/guc_klvs_abi.h | 1 +
 drivers/gpu/drm/xe/xe_guc_ads.c       | 6 ++++++
 drivers/gpu/drm/xe/xe_wa_oob.rules    | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/xe/abi/guc_klvs_abi.h b/drivers/gpu/drm/xe/abi/guc_klvs_abi.h
index 8f9f60b28306..6b30743a2f6c 100644
--- a/drivers/gpu/drm/xe/abi/guc_klvs_abi.h
+++ b/drivers/gpu/drm/xe/abi/guc_klvs_abi.h
@@ -351,6 +351,7 @@ enum xe_guc_klv_ids {
 	GUC_WORKAROUND_KLV_ID_GAM_PFQ_SHADOW_TAIL_POLLING				= 0x9005,
 	GUC_WORKAROUND_KLV_ID_DISABLE_MTP_DURING_ASYNC_COMPUTE				= 0x9007,
 	GUC_WA_KLV_NP_RD_WRITE_TO_CLEAR_RCSM_AT_CGP_LATE_RESTORE			= 0x9008,
+	GUC_WORKAROUND_KLV_ID_BACK_TO_BACK_RCS_ENGINE_RESET				= 0x9009,
 };
 
 #endif
diff --git a/drivers/gpu/drm/xe/xe_guc_ads.c b/drivers/gpu/drm/xe/xe_guc_ads.c
index 1c60b685dbc6..d1902a8581ca 100644
--- a/drivers/gpu/drm/xe/xe_guc_ads.c
+++ b/drivers/gpu/drm/xe/xe_guc_ads.c
@@ -24,6 +24,7 @@
 #include "xe_map.h"
 #include "xe_mmio.h"
 #include "xe_platform_types.h"
+#include "xe_uc_fw.h"
 #include "xe_wa.h"
 
 /* Slack of a few additional entries per engine */
@@ -367,6 +368,11 @@ static void guc_waklv_init(struct xe_guc_ads *ads)
 					  0xC40,
 					  &offset, &remain);
 
+	if (XE_WA(gt, 14022293748) || XE_WA(gt, 22019794406))
+		guc_waklv_enable_simple(ads,
+					GUC_WORKAROUND_KLV_ID_BACK_TO_BACK_RCS_ENGINE_RESET,
+					&offset, &remain);
+
 	size = guc_ads_waklv_size(ads) - remain;
 	if (!size)
 		return;
diff --git a/drivers/gpu/drm/xe/xe_wa_oob.rules b/drivers/gpu/drm/xe/xe_wa_oob.rules
index 540d38603f32..5cf27ff27ce6 100644
--- a/drivers/gpu/drm/xe/xe_wa_oob.rules
+++ b/drivers/gpu/drm/xe/xe_wa_oob.rules
@@ -27,6 +27,10 @@
 16022287689	GRAPHICS_VERSION(2001)
 		GRAPHICS_VERSION(2004)
 13011645652	GRAPHICS_VERSION(2004)
+14022293748	GRAPHICS_VERSION(2001)
+		GRAPHICS_VERSION(2004)
+22019794406	GRAPHICS_VERSION(2001)
+		GRAPHICS_VERSION(2004)
 22019338487	MEDIA_VERSION(2000)
 		GRAPHICS_VERSION(2001)
 22019338487_display	PLATFORM(LUNARLAKE)
-- 
2.43.0