Re: [PATCH 2/2] drm/i915/guc: Extend w/a 14019159160

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On 6/21/2024 5:46 PM, John.C.Harrison@xxxxxxxxx wrote:
From: John Harrison <John.C.Harrison@xxxxxxxxx>

There is a new part to an existing workaround, so enable that piece as
well.

v2: Extend even further.
v3: Drop DG2 as there are CI failures still to resolve. Also re-order
the parameters to a function to reduce excessive line wrapping.

LGTM,

Reviewed-by: Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>


Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
---
  drivers/gpu/drm/i915/gt/uc/abi/guc_klvs_abi.h |  1 +
  drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c    | 18 +++++++++---------
  2 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_klvs_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_klvs_abi.h
index 37ff539a6963d..0c709e6c15be7 100644
--- a/drivers/gpu/drm/i915/gt/uc/abi/guc_klvs_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_klvs_abi.h
@@ -107,6 +107,7 @@ enum {
  enum {
  	GUC_WORKAROUND_KLV_SERIALIZED_RA_MODE				= 0x9001,
  	GUC_WORKAROUND_KLV_BLOCK_INTERRUPTS_WHEN_MGSR_BLOCKED		= 0x9002,
+	GUC_WORKAROUND_KLV_AVOID_GFX_CLEAR_WHILE_ACTIVE			= 0x9006,
  };
#endif /* _ABI_GUC_KLVS_ABI_H */
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
index f1fe5f9054538..46fabbfc775e0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
@@ -815,8 +815,7 @@ guc_capture_prep_lists(struct intel_guc *guc)
  	return PAGE_ALIGN(total_size);
  }
-static void guc_waklv_enable_simple(struct intel_guc *guc,
-				    u32 klv_id, u32 *offset, u32 *remain)
+static void guc_waklv_enable_simple(struct intel_guc *guc, u32 *offset, u32 *remain, u32 klv_id)
  {
  	u32 size;
  	u32 klv_entry[] = {
@@ -850,19 +849,20 @@ static void guc_waklv_init(struct intel_guc *guc)
  	remain = guc_ads_waklv_size(guc);
/* Wa_14019159160 */
-	if (IS_GFX_GT_IP_RANGE(gt, IP_VER(12, 70), IP_VER(12, 74)))
-		guc_waklv_enable_simple(guc,
-					GUC_WORKAROUND_KLV_SERIALIZED_RA_MODE,
-					&offset, &remain);
+	if (IS_GFX_GT_IP_RANGE(gt, IP_VER(12, 70), IP_VER(12, 74))) {
+		guc_waklv_enable_simple(guc, &offset, &remain,
+					GUC_WORKAROUND_KLV_SERIALIZED_RA_MODE);
+		guc_waklv_enable_simple(guc, &offset, &remain,
+					GUC_WORKAROUND_KLV_AVOID_GFX_CLEAR_WHILE_ACTIVE);
+	}
/* Wa_16021333562 */
  	if ((GUC_FIRMWARE_VER(guc) >= MAKE_GUC_VER(70, 21, 1)) &&
  	    (IS_GFX_GT_IP_RANGE(gt, IP_VER(12, 70), IP_VER(12, 74)) ||
  	     IS_MEDIA_GT_IP_RANGE(gt, IP_VER(13, 0), IP_VER(13, 0)) ||
  	     IS_DG2(gt->i915)))
-		guc_waklv_enable_simple(guc,
-					GUC_WORKAROUND_KLV_BLOCK_INTERRUPTS_WHEN_MGSR_BLOCKED,
-					&offset, &remain);
+		guc_waklv_enable_simple(guc, &offset, &remain,
+					GUC_WORKAROUND_KLV_BLOCK_INTERRUPTS_WHEN_MGSR_BLOCKED);
size = guc_ads_waklv_size(guc) - remain;
  	if (!size)



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