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-rw-r--r--patches/i915-pipeline.patch76
1 files changed, 76 insertions, 0 deletions
diff --git a/patches/i915-pipeline.patch b/patches/i915-pipeline.patch
new file mode 100644
index 0000000..2bf2879
--- /dev/null
+++ b/patches/i915-pipeline.patch
@@ -0,0 +1,76 @@
+From 3b936797f5e4623ae1b80a5f0c4df30a17360bf5 Mon Sep 17 00:00:00 2001
+From: Chris Wilson <chris@chris-wilson.co.uk>
+Date: Thu, 17 Mar 2011 15:23:22 +0000
+Subject: drm/i915: Fix pipelined fencing
+
+Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34584
+Cc: Andy Whitcroft <apw@canonical.com>
+Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
+Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
+---
+diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
+index 36e66cc..10378a3 100644
+--- a/drivers/gpu/drm/i915/i915_gem.c
++++ b/drivers/gpu/drm/i915/i915_gem.c
+@@ -2544,8 +2544,25 @@ i915_gem_object_get_fence(struct drm_i915_gem_object *obj,
+ reg = &dev_priv->fence_regs[obj->fence_reg];
+ list_move_tail(&reg->lru_list, &dev_priv->mm.fence_list);
+
+- if (!obj->fenced_gpu_access && !obj->last_fenced_seqno)
+- pipelined = NULL;
++ if (obj->tiling_changed) {
++ ret = i915_gem_object_flush_fence(obj,
++ pipelined,
++ interruptible);
++ if (ret)
++ return ret;
++
++ if (!obj->fenced_gpu_access && !obj->last_fenced_seqno)
++ pipelined = NULL;
++
++ if (pipelined) {
++ reg->setup_seqno =
++ i915_gem_next_request_seqno(dev, pipelined);
++ obj->last_fenced_seqno = reg->setup_seqno;
++ obj->last_fenced_ring = pipelined;
++ }
++
++ goto update;
++ }
+
+ if (!pipelined) {
+ if (reg->setup_seqno) {
+@@ -2568,31 +2585,6 @@ i915_gem_object_get_fence(struct drm_i915_gem_object *obj,
+ interruptible);
+ if (ret)
+ return ret;
+- } else if (obj->tiling_changed) {
+- if (obj->fenced_gpu_access) {
+- if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) {
+- ret = i915_gem_flush_ring(obj->base.dev, obj->ring,
+- 0, obj->base.write_domain);
+- if (ret)
+- return ret;
+- }
+-
+- obj->fenced_gpu_access = false;
+- }
+- }
+-
+- if (!obj->fenced_gpu_access && !obj->last_fenced_seqno)
+- pipelined = NULL;
+- BUG_ON(!pipelined && reg->setup_seqno);
+-
+- if (obj->tiling_changed) {
+- if (pipelined) {
+- reg->setup_seqno =
+- i915_gem_next_request_seqno(dev, pipelined);
+- obj->last_fenced_seqno = reg->setup_seqno;
+- obj->last_fenced_ring = pipelined;
+- }
+- goto update;
+ }
+
+ return 0;
+--
+cgit v0.8.3-6-g21f6