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* [PATCH] drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission
@ 2019-10-28 21:25 don.hiatt
  2019-10-28 21:25 ` [Intel-gfx] " don.hiatt
                   ` (3 more replies)
  0 siblings, 4 replies; 20+ messages in thread
From: don.hiatt @ 2019-10-28 21:25 UTC (permalink / raw)
  To: intel-gfx

From: Don Hiatt <don.hiatt@intel.com>

On some platforms (e.g. KBL) that do not support GuC submission, but
the user enabled the GuC communication (e.g for HuC authentication)
calling the GuC EXIT_S_STATE action results in lose of ability to
enter RC6. We can remove the GuC suspend/remove entirely as we do
not need to save the GuC submission status.

v2: Do not suspend/resume the GuC on platforms that do not support
    Guc Submission.

Signed-off-by: Don Hiatt <don.hiatt@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_uc.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 3fdbc935d155..04031564f0b1 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -572,10 +572,19 @@ void intel_uc_runtime_suspend(struct intel_uc *uc)
 	if (!intel_guc_is_running(guc))
 		return;
 
+	/*
+	 * If GuC communciation is enabled but submission is not supported,
+	 * we do not need to suspend the GuC but we do need to disable the
+	 * GuC communication on suspend.
+	 */
+	if (!guc->submission_supported)
+		goto guc_disable_comm;
+
 	err = intel_guc_suspend(guc);
 	if (err)
 		DRM_DEBUG_DRIVER("Failed to suspend GuC, err=%d", err);
 
+guc_disable_comm:
 	guc_disable_communication(guc);
 }
 
@@ -605,6 +614,14 @@ static int __uc_resume(struct intel_uc *uc, bool enable_communication)
 	if (enable_communication)
 		guc_enable_communication(guc);
 
+	/*
+	 * If GuC communciation is enabled but submission is not supported,
+	 * we do not need to resume the GuC but we do need to enable the
+	 * GuC communication on resume (above).
+	 */
+	if (!guc->submission_supported)
+		return 0;
+
 	err = intel_guc_resume(guc);
 	if (err) {
 		DRM_DEBUG_DRIVER("Failed to resume GuC, err=%d", err);
-- 
2.20.1

_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 20+ messages in thread
* [PATCH] drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission
@ 2019-10-30 21:22 don.hiatt
  0 siblings, 0 replies; 20+ messages in thread
From: don.hiatt @ 2019-10-30 21:22 UTC (permalink / raw)
  To: intel-gfx

From: Don Hiatt <don.hiatt@intel.com>

On some platforms (e.g. KBL) that do not support GuC submission, but
the user enabled the GuC communication (e.g for HuC authentication)
calling the GuC EXIT_S_STATE action results in lose of ability to
enter RC6. We can remove the GuC suspend/resume entirely as we do
not need to save the GuC submission status.

v2: Do not suspend/resume the GuC on platforms that do not support
    Guc Submission.
v3: Fix typo, move suspend logic to remove goto.

Signed-off-by: Don Hiatt <don.hiatt@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc.c | 7 +++++++
 drivers/gpu/drm/i915/gt/uc/intel_uc.c  | 8 ++++++++
 2 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index f12959182182..070c3db8513a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -587,6 +587,13 @@ int intel_guc_suspend(struct intel_guc *guc)
 		GUC_POWER_D1, /* any value greater than GUC_POWER_D0 */
 	};
 
+	/*
+	 * If GuC communication is enabled but submission is not supported,
+	 * we do not need to suspend the GuC.
+	 */
+	if (!guc->submission_supported)
+		return 0;
+
 	/*
 	 * The ENTER_S_STATE action queues the save/restore operation in GuC FW
 	 * and then returns, so waiting on the H2G is not enough to guarantee
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 629b19377a29..e0b59dfbb901 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -605,6 +605,14 @@ static int __uc_resume(struct intel_uc *uc, bool enable_communication)
 	if (enable_communication)
 		guc_enable_communication(guc);
 
+	/*
+	 * If GuC communication is enabled but submission is not supported,
+	 * we do not need to resume the GuC but we do need to enable the
+	 * GuC communication on resume (above).
+	 */
+	if (!guc->submission_supported)
+		return 0;
+
 	err = intel_guc_resume(guc);
 	if (err) {
 		DRM_DEBUG_DRIVER("Failed to resume GuC, err=%d", err);
-- 
2.20.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 20+ messages in thread
* [PATCH] drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission
@ 2019-11-15 18:20 don.hiatt
  2019-11-15 22:02 ` Daniele Ceraolo Spurio
  0 siblings, 1 reply; 20+ messages in thread
From: don.hiatt @ 2019-11-15 18:20 UTC (permalink / raw)
  To: intel-gfx; +Cc: S . Zharkoff, KiteStramuort, Tomas Janousek

From: Don Hiatt <don.hiatt@intel.com>

On some platforms (e.g. KBL) that do not support GuC submission, but
the user enabled the GuC communication (e.g for HuC authentication)
calling the GuC EXIT_S_STATE action results in lose of ability to
enter RC6. We can remove the GuC suspend/resume entirely as we do
not need to save the GuC submission status.

Add intel_guc_submission_is_enabled() function to determine if
GuC submission is active.

v2: Do not suspend/resume the GuC on platforms that do not support
    Guc Submission.
v3: Fix typo, move suspend logic to remove goto.
v4: Use intel_guc_submission_is_enabled() to check GuC submission
    status.
v5: No need to look at engine to determine if submission is enabled.
    Squash fix + intel_guc_submission_is_enabled() patch into one.

Reported-by: KiteStramuort <kitestramuort@autistici.org>
Reported-by: S. Zharkoff <s.zharkoff@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111594
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111623
Fixes: f774f0964919 ("drm/i915/guc: Turn on GuC/HuC auto mode")
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceralo Spurio <daniele.ceraolospurio@intel.com>
Cc: Stuart Summers <stuart.summers@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Tomas Janousek <tomi@nomi.cz>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc.c | 7 +++++++
 drivers/gpu/drm/i915/gt/uc/intel_uc.c  | 8 ++++++++
 drivers/gpu/drm/i915/i915_drv.h        | 6 ++++++
 3 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 019ae6486e8d..92d9305c0d73 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -553,6 +553,13 @@ int intel_guc_suspend(struct intel_guc *guc)
 		GUC_POWER_D1, /* any value greater than GUC_POWER_D0 */
 	};
 
+	/*
+	 * If GuC communication is enabled but submission is not supported,
+	 * we do not need to suspend the GuC.
+	 */
+	if (!intel_guc_submission_is_enabled(guc))
+		return 0;
+
 	/*
 	 * The ENTER_S_STATE action queues the save/restore operation in GuC FW
 	 * and then returns, so waiting on the H2G is not enough to guarantee
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 629b19377a29..4dd43b99a334 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -605,6 +605,14 @@ static int __uc_resume(struct intel_uc *uc, bool enable_communication)
 	if (enable_communication)
 		guc_enable_communication(guc);
 
+	/*
+	 * If GuC communication is enabled but submission is not supported,
+	 * we do not need to resume the GuC but we do need to enable the
+	 * GuC communication on resume (above).
+	 */
+	if (!intel_guc_submission_is_enabled(guc))
+		return 0;
+
 	err = intel_guc_resume(guc);
 	if (err) {
 		DRM_DEBUG_DRIVER("Failed to resume GuC, err=%d", err);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7bc1d8c102b2..2b879472e760 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2044,4 +2044,10 @@ i915_coherent_map_type(struct drm_i915_private *i915)
 	return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
 }
 
+static inline bool intel_guc_submission_is_enabled(struct intel_guc *guc)
+{
+	return intel_guc_is_submission_supported(guc) &&
+		intel_guc_is_running(guc);
+}
+
 #endif
-- 
2.20.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 20+ messages in thread
* [PATCH] drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission
@ 2019-11-15 23:15 don.hiatt
  2019-11-16 10:04 ` Chris Wilson
  0 siblings, 1 reply; 20+ messages in thread
From: don.hiatt @ 2019-11-15 23:15 UTC (permalink / raw)
  To: intel-gfx; +Cc: S . Zharkoff, KiteStramuort, Tomas Janousek

From: Don Hiatt <don.hiatt@intel.com>

On some platforms (e.g. KBL) that do not support GuC submission, but
the user enabled the GuC communication (e.g for HuC authentication)
calling the GuC EXIT_S_STATE action results in lose of ability to
enter RC6. We can remove the GuC suspend/resume entirely as we do
not need to save the GuC submission status.

Add intel_guc_submission_is_enabled() function to determine if
GuC submission is active.

v2: Do not suspend/resume the GuC on platforms that do not support
    Guc Submission.
v3: Fix typo, move suspend logic to remove goto.
v4: Use intel_guc_submission_is_enabled() to check GuC submission
    status.
v5: No need to look at engine to determine if submission is enabled.
    Squash fix + intel_guc_submission_is_enabled() patch into one.
v6: Move resume check into intel_guc_resume() for symmetry.
    Fix commit Fixes tag.

Reported-by: KiteStramuort <kitestramuort@autistici.org>
Reported-by: S. Zharkoff <s.zharkoff@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111594
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111623
Fixes: ffd5ce22faa4 ("drm/i915/guc: Updates for GuC 32.0.3 firmware")
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceralo Spurio <daniele.ceraolospurio@intel.com>
Cc: Stuart Summers <stuart.summers@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Tomas Janousek <tomi@nomi.cz>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc.c | 15 +++++++++++++++
 drivers/gpu/drm/i915/i915_drv.h        |  6 ++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 019ae6486e8d..3ee4a4e7689d 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -553,6 +553,13 @@ int intel_guc_suspend(struct intel_guc *guc)
 		GUC_POWER_D1, /* any value greater than GUC_POWER_D0 */
 	};
 
+	/*
+	 * If GuC communication is enabled but submission is not supported,
+	 * we do not need to suspend the GuC.
+	 */
+	if (!intel_guc_submission_is_enabled(guc))
+		return 0;
+
 	/*
 	 * The ENTER_S_STATE action queues the save/restore operation in GuC FW
 	 * and then returns, so waiting on the H2G is not enough to guarantee
@@ -610,6 +617,14 @@ int intel_guc_resume(struct intel_guc *guc)
 		GUC_POWER_D0,
 	};
 
+	/*
+	 * If GuC communication is enabled but submission is not supported,
+	 * we do not need to resume the GuC but we do need to enable the
+	 * GuC communication on resume (above).
+	 */
+	if (!intel_guc_submission_is_enabled(guc))
+		return 0;
+
 	return intel_guc_send(guc, action, ARRAY_SIZE(action));
 }
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7bc1d8c102b2..2b879472e760 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2044,4 +2044,10 @@ i915_coherent_map_type(struct drm_i915_private *i915)
 	return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
 }
 
+static inline bool intel_guc_submission_is_enabled(struct intel_guc *guc)
+{
+	return intel_guc_is_submission_supported(guc) &&
+		intel_guc_is_running(guc);
+}
+
 #endif
-- 
2.20.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 20+ messages in thread
end of thread, other threads:[~2019-11-16 10:05 UTC | newest]

Thread overview: 20+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-10-28 21:25 [PATCH] drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission don.hiatt
2019-10-28 21:25 ` [Intel-gfx] " don.hiatt
2019-10-29  0:58 ` ✗ Fi.CI.BAT: failure for " Patchwork
2019-10-29  0:58   ` [Intel-gfx] " Patchwork
2019-10-29 12:33 ` [PATCH] " Michal Wajdeczko
2019-10-29 12:33   ` [Intel-gfx] " Michal Wajdeczko
2019-10-29 21:15   ` Hiatt, Don
2019-10-29 21:15     ` [Intel-gfx] " Hiatt, Don
2019-10-30  7:25   ` Tomas Janousek
2019-10-30  7:25     ` [Intel-gfx] " Tomas Janousek
2019-10-30  7:53 ` ✗ Fi.CI.BUILD: failure for drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission (rev2) Patchwork
2019-10-30  7:53   ` [Intel-gfx] " Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2019-10-30 21:22 [PATCH] drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission don.hiatt
2019-11-15 18:20 don.hiatt
2019-11-15 22:02 ` Daniele Ceraolo Spurio
2019-11-15 22:22   ` Hiatt, Don
2019-11-15 23:10     ` Daniele Ceraolo Spurio
2019-11-15 23:15       ` Hiatt, Don
2019-11-15 23:15 don.hiatt
2019-11-16 10:04 ` Chris Wilson

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