From 181bdcaf2c32b9280bcbeccb84fc5fb74ad7d24b Mon Sep 17 00:00:00 2001
From: Matt Roper <matthew.d.roper@intel.com>
Date: Wed, 11 Mar 2020 09:22:56 -0700
Subject: drm/i915: Add Wa_1209644611:icl,ehl
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Git-commit: aa64f8e1cf235f2e36615dba57c2c50d06181f84
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

On gen11 the XY_FAST_COPY_BLT command has some size restrictions on its
usage.  Although this instruction is mainly used by userspace, i915 also
uses it to copy object contents during some selftests, so let's ensure
the restrictions are followed.

Bspec: 6544
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200311162300.1838847-3-matthew.d.roper@intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/i915/gem/i915_gem_object_blt.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
index 39b8a055d80a..e00792158f13 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
@@ -196,6 +196,17 @@ int i915_gem_object_fill_blt(struct drm_i915_gem_object *obj,
 	return err;
 }
 
+/* Wa_1209644611:icl,ehl */
+static bool wa_1209644611_applies(struct drm_i915_private *i915, u32 size)
+{
+	u32 height = size >> PAGE_SHIFT;
+
+	if (!IS_GEN(i915, 11))
+		return false;
+
+	return height % 4 == 3 && height <= 8;
+}
+
 struct i915_vma *intel_emit_vma_copy_blt(struct intel_context *ce,
 					 struct i915_vma *src,
 					 struct i915_vma *dst)
@@ -237,7 +248,8 @@ struct i915_vma *intel_emit_vma_copy_blt(struct intel_context *ce,
 		size = min_t(u64, rem, block_size);
 		GEM_BUG_ON(size >> PAGE_SHIFT > S16_MAX);
 
-		if (INTEL_GEN(i915) >= 9) {
+		if (INTEL_GEN(i915) >= 9 &&
+		    !wa_1209644611_applies(i915, size)) {
 			*cmd++ = GEN9_XY_FAST_COPY_BLT_CMD | (10 - 2);
 			*cmd++ = BLT_DEPTH_32 | PAGE_SIZE;
 			*cmd++ = 0;
-- 
2.28.0