This is a note to let you know that I've just added the patch titled
drm/i915: Consolidate condition for Wa_22011802037
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-consolidate-condition-for-wa_22011802037.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b16e4e493b1c02e6d3f9a7c3f522c5228f6a10fb
Author: Matt Roper <matthew.d.roper@xxxxxxxxx>
Date: Mon Aug 21 11:06:21 2023 -0700
drm/i915: Consolidate condition for Wa_22011802037
[ Upstream commit 28c46feec7f8760683ef08f12746630a3598173e ]
The workaround bounds for Wa_22011802037 are somewhat complex and are
replicated in several places throughout the code. Pull the condition
out to a helper function to prevent mistakes if this condition needs to
change again in the future.
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
Reviewed-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20230821180619.650007-12-matthew.d.roper@xxxxxxxxx
Stable-dep-of: 186bce682772 ("drm/i915/mtl: Update workaround 14018575942")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index e85d70a62123f..84a75c95f3f7d 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -1616,9 +1616,7 @@ static int __intel_engine_stop_cs(struct intel_engine_cs *engine,
* Wa_22011802037: Prior to doing a reset, ensure CS is
* stopped, set ring stop bit and prefetch disable bit to halt CS
*/
- if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
- (GRAPHICS_VER(engine->i915) >= 11 &&
- GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70)))
+ if (intel_engine_reset_needs_wa_22011802037(engine->gt))
intel_uncore_write_fw(uncore, RING_MODE_GEN7(engine->mmio_base),
_MASKED_BIT_ENABLE(GEN12_GFX_PREFETCH_DISABLE));
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 5a720e2523126..42e09f1589205 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -3001,9 +3001,7 @@ static void execlists_reset_prepare(struct intel_engine_cs *engine)
* Wa_22011802037: In addition to stopping the cs, we need
* to wait for any pending mi force wakeups
*/
- if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
- (GRAPHICS_VER(engine->i915) >= 11 &&
- GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70)))
+ if (intel_engine_reset_needs_wa_22011802037(engine->gt))
intel_engine_wait_for_pending_mi_fw(engine);
engine->execlists.reset_ccid = active_ccid(engine);
diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
index 5fa57a34cf4bb..3a3f71ce3cb77 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -1632,6 +1632,24 @@ void __intel_fini_wedge(struct intel_wedge_me *w)
w->gt = NULL;
}
+/*
+ * Wa_22011802037 requires that we (or the GuC) ensure that no command
+ * streamers are executing MI_FORCE_WAKE while an engine reset is initiated.
+ */
+bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt)
+{
+ if (GRAPHICS_VER(gt->i915) < 11)
+ return false;
+
+ if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0))
+ return true;
+
+ if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 70))
+ return false;
+
+ return true;
+}
+
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftest_reset.c"
#include "selftest_hangcheck.c"
diff --git a/drivers/gpu/drm/i915/gt/intel_reset.h b/drivers/gpu/drm/i915/gt/intel_reset.h
index 25c975b6e8fc0..f615b30b81c59 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.h
+++ b/drivers/gpu/drm/i915/gt/intel_reset.h
@@ -78,4 +78,6 @@ void __intel_fini_wedge(struct intel_wedge_me *w);
bool intel_has_gpu_reset(const struct intel_gt *gt);
bool intel_has_reset_engine(const struct intel_gt *gt);
+bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt);
+
#endif /* I915_RESET_H */
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 82a2ecc12b212..da967938fea58 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -288,9 +288,7 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc)
flags |= GUC_WA_DUAL_QUEUE;
/* Wa_22011802037: graphics version 11/12 */
- if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0) ||
- (GRAPHICS_VER(gt->i915) >= 11 &&
- GRAPHICS_VER_FULL(gt->i915) < IP_VER(12, 70)))
+ if (intel_engine_reset_needs_wa_22011802037(gt))
flags |= GUC_WA_PRE_PARSER;
/*
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 836e4d9d65ef6..7a3e02ea56639 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1690,9 +1690,7 @@ static void guc_engine_reset_prepare(struct intel_engine_cs *engine)
* Wa_22011802037: In addition to stopping the cs, we need
* to wait for any pending mi force wakeups
*/
- if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
- (GRAPHICS_VER(engine->i915) >= 11 &&
- GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70))) {
+ if (intel_engine_reset_needs_wa_22011802037(engine->gt)) {
intel_engine_stop_cs(engine);
intel_engine_wait_for_pending_mi_fw(engine);
}
