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From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 13/23] drm/i915/kbl: Add WaDisableDynamicCreditSharing
Date: Thu, 26 May 2016 18:29:36 +0300	[thread overview]
Message-ID: <1464276586-17939-14-git-send-email-mika.kuoppala@intel.com> (raw)
In-Reply-To: <1464276586-17939-1-git-send-email-mika.kuoppala@intel.com>

Bspec states that we need to turn off dynamic credit
sharing on kbl revid a0 and b0. This happens by writing bit 28
on 0x4ab8.

References: HSD#2225601, HSD#2226938, HSD#2225763
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h         | 2 ++
 drivers/gpu/drm/i915/intel_ringbuffer.c | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 14e0ec818ea4..e0441da08201 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1672,6 +1672,8 @@ enum skl_disp_power_wells {
 
 #define GEN7_TLB_RD_ADDR	_MMIO(0x4700)
 
+#define GAMT_CHKN_BIT_REG	_MMIO(0x4ab8)
+
 #if 0
 #define PRB0_TAIL	_MMIO(0x2030)
 #define PRB0_HEAD	_MMIO(0x2034)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 64922ae9bd69..402e0feb4cca 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1188,6 +1188,10 @@ static int kbl_init_workarounds(struct intel_engine_cs *engine)
 	if (ret)
 		return ret;
 
+	/* WaDisableDynamicCreditSharing:kbl */
+	if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
+		WA_SET_BIT(GAMT_CHKN_BIT_REG, (1 << 28));
+
 	/* WaDisableFenceDestinationToSLM:kbl (pre-prod) */
 	if (IS_KBL_REVID(dev_priv, KBL_REVID_A0, KBL_REVID_A0))
 		WA_SET_BIT_MASKED(HDC_CHICKEN0,
-- 
2.5.0

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  parent reply	other threads:[~2016-05-26 15:29 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-26 15:29 [PATCH 00/23] kbl and gen9 workarounds Mika Kuoppala
2016-05-26 15:29 ` [PATCH 01/23] drm/i915/kbl: Init " Mika Kuoppala
2016-05-26 15:29 ` [PATCH 02/23] drm/i915/kbl: Add REVID macro Mika Kuoppala
2016-05-26 15:29 ` [PATCH 03/23] drm/i915/kbl: Add WaSkipStolenMemoryFirstPage for A0 Mika Kuoppala
2016-05-26 15:29 ` [PATCH 04/23] drm/i915/gen9: Always apply WaForceContextSaveRestoreNonCoherent Mika Kuoppala
2016-05-26 15:29 ` [PATCH 05/23] drm/i915: Mimic skl with WaForceEnableNonCoherent Mika Kuoppala
2016-05-26 15:29 ` [PATCH 06/23] drm/i915/kbl: Add WaEnableGapsTsvCreditFix Mika Kuoppala
2016-05-27  8:14   ` Arun Siluvery
2016-05-26 15:29 ` [PATCH 07/23] drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0 Mika Kuoppala
2016-05-26 15:29 ` [PATCH 08/23] drm/i915/kbl: Add WaDisableSDEUnitClockGating Mika Kuoppala
2016-05-26 15:29 ` [PATCH 09/23] drm/i915/edp: Add WaKVMNotificationOnConfigChange:bdw, skl Mika Kuoppala
2016-05-27  8:18   ` Mika Kuoppala
2016-05-26 15:29 ` [PATCH 10/23] drm/i915/kbl: Add WaDisableLSQCROPERFforOCL Mika Kuoppala
2016-05-26 15:29 ` [PATCH 11/23] drm/i915/gen9: Enable must set chicken bits in config0 reg Mika Kuoppala
2016-05-26 15:29 ` [PATCH 12/23] drm/i915/kbl: Add WaDisableGamClockGating Mika Kuoppala
2016-05-26 15:29 ` Mika Kuoppala [this message]
2016-05-26 15:29 ` [PATCH 14/23] drm/i915: Add WaInsertDummyPushConstP for bxt and kbl Mika Kuoppala
2016-05-26 15:29 ` [PATCH 15/23] drm/i915/gen9: Add WaDisableSkipCaching Mika Kuoppala
2016-05-26 15:29 ` [PATCH 16/23] drm/i915/skl: Add WAC6entrylatency Mika Kuoppala
2016-05-26 15:29 ` [PATCH 17/23] drm/i915/kbl: Add WaForGAMHang Mika Kuoppala
2016-05-26 15:29 ` [PATCH 18/23] drm/i915: Add WaDisableGafsUnitClkGating for skl and kbl Mika Kuoppala
2016-05-26 15:29 ` [PATCH 19/23] drm/i915/kbl: Add WaDisableSbeCacheDispatchPortSharing Mika Kuoppala
2016-05-26 15:29 ` [PATCH 20/23] drm/i915/gen9: Set wa for display underrun issues with Y & Yf Tiling Mika Kuoppala
2016-05-26 16:53   ` [PATCH 20/23] drm/i915/gen9: Add WaEnableChickenDCPR Mika Kuoppala
2016-05-26 15:29 ` [PATCH 21/23] drm/i915/gen9: Set fbc watermarks disabled Mika Kuoppala
2016-05-26 15:53   ` Ville Syrjälä
2016-05-26 16:06     ` Ville Syrjälä
2016-05-26 16:54   ` [PATCH 21/23] drm/i915/gen9: Add WaFbcTurnOffFbcWatermark Mika Kuoppala
2016-05-26 15:29 ` [PATCH 22/23] drm/i915/gen9: Prevent fbc corruption/system hangs with high bw Mika Kuoppala
2016-05-26 16:54   ` [PATCH 22/23] drm/i915/gen9: Add WaFbcWakeMemOn Mika Kuoppala
2016-05-26 15:29 ` [PATCH 23/23] drm/i195/fbc: Enable wa to prevent fbc corruption with skl and kbl Mika Kuoppala
2016-05-26 16:55   ` [PATCH 23/23] drm/i195/fbc: Add WaFbcNukeOnHostModify Mika Kuoppala
2016-05-26 16:37 ` ✗ Ro.CI.BAT: warning for kbl and gen9 workarounds Patchwork
2016-05-26 17:37 ` ✗ Ro.CI.BAT: warning for kbl and gen9 workarounds (rev5) Patchwork
2016-06-06  7:51 ` [PATCH 00/23] kbl and gen9 workarounds Jani Nikula

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