From: Arun Siluvery <arun.siluvery@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Subject: [PATCH v1 1/2] drm/i915:skl: Add WaEnableGapsTsvCreditFix
Date: Mon, 3 Aug 2015 20:24:56 +0100 [thread overview]
Message-ID: <1438629897-2993-2-git-send-email-arun.siluvery@linux.intel.com> (raw)
In-Reply-To: <1438629897-2993-1-git-send-email-arun.siluvery@linux.intel.com>
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 3 +++
drivers/gpu/drm/i915/intel_pm.c | 6 ++++++
2 files changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 77967ca..8991cd5 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6849,6 +6849,9 @@ enum skl_disp_power_wells {
#define GEN7_MISCCPCTL (0x9424)
#define GEN7_DOP_CLOCK_GATE_ENABLE (1<<0)
+#define GEN8_GARBCNTL 0xB004
+#define GEN9_GAPS_TSV_CREDIT_DISABLE (1<<7)
+
/* IVYBRIDGE DPF */
#define GEN7_L3CDERRST1 0xB008 /* L3CD Error Status 1 */
#define HSW_L3CDERRST11 0xB208 /* L3CD Error Status register 1 slice 1 */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c23cab6..9152113 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -106,6 +106,12 @@ static void skl_init_clock_gating(struct drm_device *dev)
/* WaDisableLSQCROPERFforOCL:skl */
I915_WRITE(GEN8_L3SQCREG4, I915_READ(GEN8_L3SQCREG4) |
GEN8_LQSC_RO_PERF_DIS);
+
+ /* WaEnableGapsTsvCreditFix:skl */
+ if (IS_SKYLAKE(dev) && (INTEL_REVID(dev) >= SKL_REVID_C0)) {
+ I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
+ GEN9_GAPS_TSV_CREDIT_DISABLE));
+ }
}
static void bxt_init_clock_gating(struct drm_device *dev)
--
1.9.1
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next prev parent reply other threads:[~2015-08-03 19:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-03 19:24 [PATCH v1 0/2] Add SKL Workarounds Arun Siluvery
2015-08-03 19:24 ` Arun Siluvery [this message]
2015-08-03 23:01 ` [PATCH v1 1/2] drm/i915:skl: Add WaEnableGapsTsvCreditFix Ben Widawsky
2015-08-04 8:58 ` Mika Kuoppala
2015-08-04 9:01 ` Siluvery, Arun
2015-08-05 9:17 ` Daniel Vetter
2015-08-05 13:36 ` Joonas Lahtinen
2015-08-03 19:24 ` [PATCH v1 2/2] drm/i915:gen9: Add disable gather at set shader w/a Arun Siluvery
2015-08-03 23:21 ` Ben Widawsky
2015-08-04 9:29 ` Siluvery, Arun
2015-08-04 10:21 ` [PATCH v2 " Arun Siluvery
2015-08-04 21:06 ` Ben Widawsky
2015-08-05 14:45 ` Mika Kuoppala
2015-08-05 15:18 ` Siluvery, Arun
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