From 6cf20a0128fab5368937d719bcd9ec1b233491b7 Mon Sep 17 00:00:00 2001
From: Oscar Mateo <oscar.mateo@intel.com>
Date: Thu, 7 Sep 2017 08:40:05 -0700
Subject: [PATCH] drm/i915: Transform WaDisableI2mCycleOnWRPort into a simple reg write
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Git-commit: 6cf20a0128fab5368937d719bcd9ec1b233491b7
Patch-mainline: v4.15-rc1
References: FATE#322643 bsc#1055900
GAMT_CHKN_BIT_REG does not live in the context.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1504798809-5653-2-git-send-email-oscar.mateo@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/intel_engine_cs.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1075,10 +1075,11 @@ static int cnl_init_workarounds(struct i
struct drm_i915_private *dev_priv = engine->i915;
int ret;
- /* WaDisableI2mCycleOnWRPort: cnl (pre-prod) */
+ /* WaDisableI2mCycleOnWRPort:cnl (pre-prod) */
if (IS_CNL_REVID(dev_priv, CNL_REVID_B0, CNL_REVID_B0))
- WA_SET_BIT(GAMT_CHKN_BIT_REG,
- GAMT_CHKN_DISABLE_I2M_CYCLE_ON_WR_PORT);
+ I915_WRITE(GAMT_CHKN_BIT_REG,
+ (I915_READ(GAMT_CHKN_BIT_REG) |
+ GAMT_CHKN_DISABLE_I2M_CYCLE_ON_WR_PORT));
/* WaForceContextSaveRestoreNonCoherent:cnl */
WA_SET_BIT_MASKED(CNL_HDC_CHICKEN0,