From: Eugeni Dodonov <eugeni.dodonov@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: Eugeni Dodonov <eugeni.dodonov@intel.com>
Subject: [PATCH 21/21] drm/i915: enable RC6 workaround on Haswell
Date: Thu, 28 Jun 2012 15:55:49 -0300 [thread overview]
Message-ID: <1340909749-15249-22-git-send-email-eugeni.dodonov@intel.com> (raw)
In-Reply-To: <1340909749-15249-1-git-send-email-eugeni.dodonov@intel.com>
For Haswell, on some of the early hardware revisions, it is possible to
run into issues when RC6 state is enabled and when pipes change state.
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 5 +++++
drivers/gpu/drm/i915/intel_pm.c | 9 +++++++++
2 files changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 78b6ba4..fd55e91 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4512,4 +4512,9 @@
#define SFUSE_STRAP_DDIC_DETECTED (1<<1)
#define SFUSE_STRAP_DDID_DETECTED (1<<0)
+#define WM_DBG 0x45280
+#define WM_DBG_DISALLOW_MULTIPLE_LP (1<<0)
+#define WM_DBG_DISALLOW_MAXFIFO (1<<1)
+#define WM_DBG_DISALLOW_SPRITE (1<<2)
+
#endif /* _I915_REG_H_ */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 0ccdb96..cc8628c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3601,6 +3601,15 @@ static void haswell_init_clock_gating(struct drm_device *dev)
/* WaDisable4x2SubspanOptimization */
I915_WRITE(CACHE_MODE_1,
_MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE));
+
+ /* Work-around rc6 issue */
+ I915_WRITE(WM_DBG,
+ I915_READ(WM_DBG) |
+ WM_DBG_DISALLOW_MULTIPLE_LP |
+ WM_DBG_DISALLOW_SPRITE |
+ WM_DBG_DISALLOW_MAXFIFO
+ );
+
}
static void ivybridge_init_clock_gating(struct drm_device *dev)
--
1.7.11.1
next prev parent reply other threads:[~2012-06-28 18:55 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-28 18:55 [PATCH 00/21] More Haswell patches Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 01/21] drm/i915: Move DP structs to shared location Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 02/21] drm/i915: Add support for DDI control DP outputs Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 03/21] drm/i915: Add DP Helper functions for Haswell Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 04/21] drm/i915: Haswell specific code for the DP Link Training Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 05/21] drm/i915: Disable DDI Pipe Control on HSW while disabling pipe Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 06/21] drm/i915: Hook DP init in ddi module Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 07/21] drm/i915: re-initialize DDI buffer translations after resume Eugeni Dodonov
2012-07-04 20:07 ` Paulo Zanoni
2012-07-04 20:35 ` Daniel Vetter
2012-07-04 23:13 ` Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 08/21] drm/i915: simplify FDI RX check for LPT Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 09/21] drm/i915: account for only one transcoder on LPT Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 10/21] drm/i915: introduce lpt_enable_pch and cpt_enable_pch Eugeni Dodonov
2012-07-04 18:21 ` Paulo Zanoni
2012-07-06 20:47 ` Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 11/21] drm/i915: program FDI_RX TP and FDI delays Eugeni Dodonov
2012-07-04 21:15 ` Paulo Zanoni
2012-07-04 23:15 ` [PATCH 10/31] " Eugeni Dodonov
2012-07-05 12:58 ` Paulo Zanoni
2012-07-05 13:12 ` Daniel Vetter
2012-06-28 18:55 ` [PATCH 12/21] drm/i915: support Haswell-style force waking Eugeni Dodonov
2012-06-28 19:38 ` Daniel Vetter
2012-06-28 20:06 ` Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 13/21] drm/i915: add RPS configuration for Haswell Eugeni Dodonov
2012-06-29 9:56 ` Daniel Vetter
2012-06-29 13:49 ` Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 14/21] drm/i915: Add EDP Registers " Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 15/21] drm/i915: Timing initialization for eDP on HSW Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 16/21] drm/i915: Modesetting for eDP on HSw Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 17/21] drm/i915: Hook eDP initialization on DDI A Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 18/21] drm/i915: introduce haswell_init_clock_gating Eugeni Dodonov
2012-06-28 18:55 ` [PATCH 19/21] drm/i915: prevent bogus intel_update_fbc notifications Eugeni Dodonov
2012-06-28 19:24 ` Daniel Vetter
2012-06-28 20:11 ` Eugeni Dodonov
2012-07-04 17:41 ` Paulo Zanoni
2012-07-04 23:19 ` Eugeni Dodonov
2012-07-05 7:47 ` Daniel Vetter
2012-06-28 18:55 ` [PATCH 20/21] drm/i915: fix PIPE_WM_LINETIME definition Eugeni Dodonov
2012-06-28 19:39 ` Daniel Vetter
2012-06-28 18:55 ` Eugeni Dodonov [this message]
2012-06-28 19:23 ` [PATCH 21/21] drm/i915: enable RC6 workaround on Haswell Daniel Vetter
2012-06-28 20:10 ` Eugeni Dodonov
2012-06-28 19:22 ` [PATCH 00/21] More Haswell patches Paulo Zanoni
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