drm/i915: Fix startup failure in LRC mode after recent init changes
A previous commit introduced engine init changes:
commit 372ee59699d9 ("drm/i915: Only init engines once")
This broke execlists as intel_lr_context_render_state_init was trying to emit
commands to the RCS for the default context before the ring->init_hw was called.
Made a new gen8_init_rcs_context function and assign in to render ring
init_context. Moved call to intel_logical_ring_workarounds_emit into
gen8_init_rcs_context to maintain previous functionality.
Moved call to render_state_init from lr_context_deferred_create into
gen8_init_rcs_context, and modified deferred_create to call ring->init_context
for non-default contexts.
Modified i915_gem_context_enable to call ring->init_context for the default
context.
So init_context will now always be called when the hw is ready - in
i915_gem_context_enable for the default context and in lr_context_deferred_create
for other contexts.
Signed-off-by: Thomas Daniel <thomas.daniel@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 3c3a9ff..5cd2b97 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -408,14 +408,25 @@
BUG_ON(!dev_priv->ring[RCS].default_context);
- if (i915.enable_execlists)
- return 0;
+ if (i915.enable_execlists) {
+ for_each_ring(ring, dev_priv, i) {
+ if (ring->init_context) {
+ ret = ring->init_context(ring,
+ ring->default_context);
+ if (ret) {
+ DRM_ERROR("ring init context: %d\n",
+ ret);
+ return ret;
+ }
+ }
+ }
- for_each_ring(ring, dev_priv, i) {
- ret = i915_switch_context(ring, ring->default_context);
- if (ret)
- return ret;
- }
+ } else
+ for_each_ring(ring, dev_priv, i) {
+ ret = i915_switch_context(ring, ring->default_context);
+ if (ret)
+ return ret;
+ }
return 0;
}