drm/i915: Convert 'flip_queued_seqno' into 'flip_queued_request'
Converted the flip_queued_seqno value to be a request structure as part of the
on going seqno to request changes. This includes reference counting the request
being saved away to ensure it can not be retired and freed while the flip code
is still waiting on it.
For: VIZ-4377
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Thomas Daniel <Thomas.Daniel@intel.com>
[danvet: Again get rid of the _irq request unref by simply moving that
into the unpin worker. Doesn't matter when we hang onto the request
for a bit longer, and in the unpin worker we already grab the
dev->struct_mutex anyway.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 4619873..3a25a7be 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -544,11 +544,11 @@
if (work->flip_queued_ring) {
seq_printf(m, "Flip queued on %s at seqno %u, next seqno %u [current breadcrumb %u], completed? %d\n",
work->flip_queued_ring->name,
- work->flip_queued_seqno,
+ i915_gem_request_get_seqno(work->flip_queued_req),
dev_priv->next_seqno,
work->flip_queued_ring->get_seqno(work->flip_queued_ring, true),
i915_seqno_passed(work->flip_queued_ring->get_seqno(work->flip_queued_ring, true),
- work->flip_queued_seqno));
+ i915_gem_request_get_seqno(work->flip_queued_req)));
} else
seq_printf(m, "Flip not associated with any ring\n");
seq_printf(m, "Flip queued on frame %d, (was ready on frame %d), now %d\n",
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0eaa1f4..766cea7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9128,6 +9128,11 @@
drm_gem_object_unreference(&work->old_fb_obj->base);
intel_update_fbc(dev);
+
+ if (work->flip_queued_req)
+ i915_gem_request_unreference(work->flip_queued_req);
+ work->flip_queued_req = NULL;
+ work->flip_queued_ring = NULL;
mutex_unlock(&dev->struct_mutex);
intel_frontbuffer_flip_complete(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
@@ -9736,10 +9741,14 @@
return false;
if (work->flip_ready_vblank == 0) {
- if (work->flip_queued_ring &&
- !i915_seqno_passed(work->flip_queued_ring->get_seqno(work->flip_queued_ring, true),
- work->flip_queued_seqno))
- return false;
+ if (work->flip_queued_ring) {
+ uint32_t s1 = work->flip_queued_ring->get_seqno(
+ work->flip_queued_ring, true);
+ uint32_t s2 = i915_gem_request_get_seqno(
+ work->flip_queued_req);
+ if (!i915_seqno_passed(s1, s2))
+ return false;
+ }
work->flip_ready_vblank = drm_vblank_count(dev, intel_crtc->pipe);
}
@@ -9903,8 +9912,8 @@
if (ret)
goto cleanup_unpin;
- work->flip_queued_seqno =
- i915_gem_request_get_seqno(obj->last_write_req);
+ i915_gem_request_assign(&work->flip_queued_req,
+ obj->last_write_req);
work->flip_queued_ring = obj->ring;
} else {
ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, ring,
@@ -9912,8 +9921,8 @@
if (ret)
goto cleanup_unpin;
- work->flip_queued_seqno =
- i915_gem_request_get_seqno(intel_ring_get_request(ring));
+ i915_gem_request_assign(&work->flip_queued_req,
+ intel_ring_get_request(ring));
work->flip_queued_ring = ring;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 6f87e3c..a3c7e14f 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -708,7 +708,7 @@
u32 flip_count;
u32 gtt_offset;
struct intel_engine_cs *flip_queued_ring;
- u32 flip_queued_seqno;
+ struct drm_i915_gem_request *flip_queued_req;
int flip_queued_vblank;
int flip_ready_vblank;
bool enable_stall_check;