[Intel-gfx] [PATCH] drm/i915/guc: Media domain bit needed when notify GuC rc6 state

[yu.dai at intel.com]

From: Alex Dai <yu.dai at intel.com>

GuC expects two bits for Render and Media domain separately when
driver sends data via host2guc SAMPLE_FORCEWAKE. Bit 0 is for
Render and bit 1 is for Media domain.

v2: Keep sync with code for WaRsDoubleRc6WrlWithCoarsePowerGating

v1: Add parameters definition to avoid magic value

Signed-off-by: Alex Dai <yu.dai at intel.com>
---
 drivers/gpu/drm/i915/i915_guc_submission.c | 13 +++++++++++--
 drivers/gpu/drm/i915/intel_guc_fwif.h      |  3 +++
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 38b6ef4..036b42b 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -155,12 +155,21 @@ static int host2guc_sample_forcewake(struct intel_guc *guc,
 				     struct i915_guc_client *client)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+	struct drm_device *dev = dev_priv->dev;
 	u32 data[2];
 
 	data[0] = HOST2GUC_ACTION_SAMPLE_FORCEWAKE;
-	data[1] = (intel_enable_rc6(dev_priv->dev)) ? 1 : 0;
+	/* WaRsDisableCoarsePowerGating:skl,bxt */
+	if (!intel_enable_rc6(dev_priv->dev) ||
+	    (IS_BROXTON(dev) && (INTEL_REVID(dev) < BXT_REVID_B0)) ||
+	    (IS_SKL_GT3(dev) && (INTEL_REVID(dev) <= SKL_REVID_E0)) ||
+	    (IS_SKL_GT4(dev) && (INTEL_REVID(dev) <= SKL_REVID_E0)))
+		data[1] = 0;
+	else
+		/* bit 0 and 1 are for Render and Media domain separately */
+		data[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA;
 
-	return host2guc_action(guc, data, 2);
+	return host2guc_action(guc, data, ARRAY_SIZE(data));
 }
 
 /*
diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h
index 4029478..04ca777 100644
--- a/drivers/gpu/drm/i915/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/intel_guc_fwif.h
@@ -296,6 +296,9 @@ struct guc_context_desc {
 #define GUC_POWER_D2		3
 #define GUC_POWER_D3		4
 
+#define GUC_FORCEWAKE_RENDER	(1 << 0)
+#define GUC_FORCEWAKE_MEDIA	(1 << 1)
+
 /* This Action will be programmed in C180 - SOFT_SCRATCH_O_REG */
 enum host2guc_action {
 	HOST2GUC_ACTION_DEFAULT = 0x0,
-- 
1.9.1