From: sagar.a.kamble@intel.com
To: intel-gfx@lists.freedesktop.org
Cc: Sagar Kamble <sagar.a.kamble@intel.com>
Subject: [PATCH 2/2] drm/i915: Disable Render power gating
Date: Fri, 10 Apr 2015 14:11:30 +0530 [thread overview]
Message-ID: <1428655290-836-2-git-send-email-sagar.a.kamble@intel.com> (raw)
In-Reply-To: <1428655290-836-1-git-send-email-sagar.a.kamble@intel.com>
From: Sagar Kamble <sagar.a.kamble@intel.com>
When RC6 along with Render power gating is enabled, GPU hang
happens due to lack of synchronization between GTI and Render reset.
Change-Id: If1614206341eb52a21eadae8c5ebb2655029b50c
Signed-off-by: Sagar Kamble <sagar.a.kamble@intel.com>
Conflicts:
drivers/gpu/drm/i915/intel_pm.c
---
drivers/gpu/drm/i915/intel_pm.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 9975401..f080710 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4350,9 +4350,12 @@ static void gen9_enable_rc6(struct drm_device *dev)
GEN6_RC_CTL_EI_MODE(1) |
rc6_mask);
- /* 3b: Enable Coarse Power Gating only when RC6 is enabled */
+ /*
+ * 3b: Enable Coarse Power Gating only when RC6 is enabled.
+ * WaDisableRenderPowerGating - Render PG need to be disabled with RC6.
+ */
I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
- (GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE) : 0);
+ GEN9_MEDIA_PG_ENABLE : 0);
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
--
1.8.5
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next prev parent reply other threads:[~2015-04-10 8:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 8:41 [PATCH 1/2] drm/i915: Naming constants to be written to GEN9_PG_ENABLE sagar.a.kamble
2015-04-10 8:41 ` sagar.a.kamble [this message]
2015-04-10 8:50 ` [PATCH 2/2] drm/i915: Disable Render power gating Damien Lespiau
2015-04-10 11:11 ` Damien Lespiau
2015-04-10 12:02 ` [PATCH 1/1] " sagar.a.kamble
2015-04-10 14:16 ` Daniel Vetter
2015-04-12 5:58 ` [PATCH v2 " sagar.a.kamble
2015-04-13 9:24 ` Daniel Vetter
2015-04-10 8:57 ` [PATCH 1/2] drm/i915: Naming constants to be written to GEN9_PG_ENABLE Damien Lespiau
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