[Intel-gfx] [PATCH 14/17] drm/i915/icl: update ddb entry start/end mask during hw ddb readout

[Paulo Zanoni]

From: Mahesh Kumar <mahesh1.kumar at intel.com>

Gen11/ICL onward ddb entry start/end mask is increased from 10 bits to
11 bits. This patch make changes to use proper mask for ICL+ during
hardware ddb value readout.

Signed-off-by: Mahesh Kumar <mahesh1.kumar at intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index d4cd631377da..84a5b13fdee2 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3860,10 +3860,18 @@ static unsigned int skl_cursor_allocation(int num_active)
 	return 8;
 }
 
-static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
+static void skl_ddb_entry_init_from_hw(struct drm_i915_private *dev_priv,
+				       struct skl_ddb_entry *entry, u32 reg)
 {
-	entry->start = reg & 0x3ff;
-	entry->end = (reg >> 16) & 0x3ff;
+	uint16_t mask;
+
+	if (INTEL_GEN(dev_priv) >= 11)
+		mask = 0x7ff;
+	else
+		mask = 0x3ff;
+	entry->start = reg & mask;
+	entry->end = (reg >> 16) & mask;
+
 	if (entry->end)
 		entry->end += 1;
 }
@@ -3894,7 +3902,9 @@ void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
 			else
 				val = I915_READ(CUR_BUF_CFG(pipe));
 
-			skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane_id], val);
+			skl_ddb_entry_init_from_hw(dev_priv,
+						   &ddb->plane[pipe][plane_id],
+						   val);
 		}
 
 		intel_display_power_put(dev_priv, power_domain);
-- 
2.14.3