[PATCH 1/2] drm/i915: Mark order of mmio to CCID/PP_DIR with switch_context()

[Chris Wilson <chris@chris-wilson.co.uk>]

When using CS commands, PP_DIR is not sampled until the context is
loaded, but when doing manual mmio after reset we load the context
before the mm. Let's switch this over for consistency.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 65811e2fa7da..4051fb55a2cf 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -574,16 +574,7 @@ static void reset_ring(struct intel_engine_cs *engine,
 		struct intel_context *ce = request->hw_context;
 		struct i915_hw_ppgtt *ppgtt;
 
-		if (ce->state) {
-			I915_WRITE(CCID,
-				   i915_ggtt_offset(ce->state) |
-				   BIT(8) /* must be set! */ |
-				   CCID_EXTENDED_STATE_SAVE |
-				   CCID_EXTENDED_STATE_RESTORE |
-				   CCID_EN);
-		}
-
-		ppgtt = request->gem_context->ppgtt ?: engine->i915->mm.aliasing_ppgtt;
+		ppgtt = request->gem_context->ppgtt ?: dev_priv->mm.aliasing_ppgtt;
 		if (ppgtt) {
 			u32 pd_offset = ppgtt->pd.base.ggtt_offset << 10;
 
@@ -600,6 +591,16 @@ static void reset_ring(struct intel_engine_cs *engine,
 			ppgtt->pd_dirty_rings &= ~intel_engine_flag(engine);
 		}
 
+		if (ce->state) {
+			I915_WRITE(CCID,
+				   i915_ggtt_offset(ce->state) |
+				   BIT(8) /* must be set! */ |
+				   CCID_EXTENDED_STATE_SAVE |
+				   CCID_EXTENDED_STATE_RESTORE |
+				   CCID_EN);
+		}
+
+
 		/* If the rq hung, jump to its breadcrumb and skip the batch */
 		if (request->fence.error == -EIO)
 			request->ring->head = request->postfix;
-- 
2.17.1

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