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From: Sagar Arun Kamble <sagar.a.kamble@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH v2 2/7] drm/i915: WaRsDisableCoarsePowerGating
Date: Sat, 12 Sep 2015 10:17:51 +0530	[thread overview]
Message-ID: <1442033276-2191-3-git-send-email-sagar.a.kamble@intel.com> (raw)
In-Reply-To: <1442033276-2191-1-git-send-email-sagar.a.kamble@intel.com>

WaRsDisableCoarsePowerGating: Coarse Power Gating (CPG) needs to be
disabled for platforms prior to BXT B0 and SKL GT3/GT4 till E0.

v2: Added GT3/GT4 Check.

Change-Id: Ia3c4c16e050c88d3e259f601054875c812d69c3a
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 1f6b5bb..c93d3a7 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4853,11 +4853,14 @@ static void gen9_enable_rc6(struct drm_device *dev)
 
 	/*
 	 * 3b: Enable Coarse Power Gating only when RC6 is enabled.
-	 * WaDisableRenderPowerGating:skl,bxt - Render PG need to be disabled with RC6.
+	 * WaRsDisableCoarsePowerGating:skl,bxt - Render/Media PG need to be disabled with RC6.
 	 */
-	I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
-			GEN9_MEDIA_PG_ENABLE : 0);
-
+	if ((IS_BROXTON(dev) && (INTEL_REVID(dev) < BXT_REVID_B0)) ||
+		((IS_SKL_GT3(dev) || IS_SKL_GT4(dev)) && (INTEL_REVID(dev) <= SKL_REVID_E0)))
+		I915_WRITE(GEN9_PG_ENABLE, 0);
+	else
+		I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
+				(GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE) : 0);
 
 	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
 
-- 
1.9.1

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  parent reply	other threads:[~2015-09-12  4:46 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-12  4:47 [PATCH v2 0/7] Gen9 RC6, Turbo, Coarse Power Gating Fixes Sagar Arun Kamble
2015-09-12  4:47 ` [PATCH v2 1/7] drm/i915: Add IS_SKL_GT3 and IS_SKL_GT4 macro Sagar Arun Kamble
2015-09-21 18:49   ` Yu Dai
2015-09-12  4:47 ` Sagar Arun Kamble [this message]
2015-09-21 18:49   ` [PATCH v2 2/7] drm/i915: WaRsDisableCoarsePowerGating Yu Dai
2015-09-23  8:49   ` Daniel Vetter
2015-09-12  4:47 ` [PATCH v2 3/7] drm/i915: WaRsUseTimeoutMode Sagar Arun Kamble
2015-09-21 18:49   ` Yu Dai
2015-09-21 21:47     ` O'Rourke, Tom
2015-09-23  8:50   ` Daniel Vetter
2015-09-23  9:33     ` Kamble, Sagar A
2015-09-23  9:36     ` [PATCH 1/1] drm/i915: Update Promotion timer for RC6 TO Mode Sagar Arun Kamble
2015-09-24 21:11       ` O'Rourke, Tom
2015-09-30 10:43         ` [PATCH v2 " Sagar Arun Kamble
2015-09-30 16:38           ` O'Rourke, Tom
2015-10-01  8:21           ` Daniel Vetter
2015-09-12  4:47 ` [PATCH v2 4/7] drm/i915: WaRsDoubleRc6WrlWithCoarsePowerGating Sagar Arun Kamble
2015-09-21 18:50   ` Yu Dai
2015-09-23  8:51   ` Daniel Vetter
2015-09-12  4:47 ` [PATCH v2 5/7] drm/i915: Program GuC MAX IDLE Count Sagar Arun Kamble
2015-09-21 18:50   ` Yu Dai
2015-09-12  4:47 ` [PATCH v2 6/7] drm/i915/guc: Notify coarse power gating configuration to GuC properly Sagar Arun Kamble
2015-09-21 16:51   ` Yu Dai
2015-09-22 22:51     ` Yu Dai
2015-09-21 18:59   ` Yu Dai
2015-09-12  4:47 ` [PATCH v2 7/7] drm/i915/bxt: WaGsvDisableTurbo Sagar Arun Kamble
2015-09-21 11:24   ` [PATCH v3 1/1] " Sagar Arun Kamble
2015-09-21 18:50   ` [PATCH v2 7/7] " Yu Dai
2015-09-23  6:32     ` Kamble, Sagar A
2015-09-23  8:53     ` Daniel Vetter

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