From: deepak.s@linux.intel.com
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm/i915/chv: Implement WaDisableShadowRegForCpd
Date: Tue, 14 Apr 2015 15:58:54 +0530 [thread overview]
Message-ID: <1429007334-31245-1-git-send-email-deepak.s@linux.intel.com> (raw)
From: Deepak S <deepak.s@linux.intel.com>
This WA disable usage of shadow register during CPD/RC6 transactions on
CHV
Signed-off-by: Deepak S <deepak.s@linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_pm.c | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 9c97842..bcdb16b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6206,6 +6206,7 @@ enum skl_disp_power_wells {
#define GTFIFOCTL 0x120008
#define GT_FIFO_FREE_ENTRIES_MASK 0x7f
#define GT_FIFO_NUM_RESERVED_ENTRIES 20
+#define GT_FIFO_CTL_BLOCK_POLICY (3<<11)
#define HSW_IDICR 0x9008
#define IDIHASHMSK(x) (((x) & 0x3f) << 16)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 4dd8b41..b9d3c00 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6431,6 +6431,10 @@ static void cherryview_init_clock_gating(struct drm_device *dev)
/* WaDisableSDEUnitClockGating:chv */
I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
+
+ /* WaDisableShadowRegForCpd */
+ I915_WRITE(GTFIFOCTL, I915_READ(GTFIFOCTL) |
+ GT_FIFO_CTL_BLOCK_POLICY);
}
static void g4x_init_clock_gating(struct drm_device *dev)
--
1.9.1
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next reply other threads:[~2015-04-14 10:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-14 10:28 deepak.s [this message]
2015-04-14 10:59 ` [PATCH] drm/i915/chv: Implement WaDisableShadowRegForCpd Ville Syrjälä
2015-04-15 8:02 ` Deepak S
2015-04-15 8:46 ` [PATCH v2] " deepak.s
2015-04-15 11:18 ` Ville Syrjälä
2015-04-15 13:39 ` Deepak S
2015-04-15 14:11 ` [PATCH v3] " deepak.s
2015-04-15 18:39 ` Ville Syrjälä
2015-04-16 3:19 ` Deepak S
2015-04-16 3:21 ` [PATCH v4] " deepak.s
2015-04-16 21:05 ` shuang.he
2015-04-28 14:41 ` Jani Nikula
2015-04-16 2:36 ` [PATCH v3] " shuang.he
2015-04-15 18:19 ` [PATCH v2] " shuang.he
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