drm/i915: Subsume intel_ctx_submit_request in to drm_i915_gem_request
Move all remaining elements that were unique to execlists queue items
in to the associated request.
Issue: VIZ-4274
v2: Rebase. Fixed issue of overzealous freeing of request.
v3: Removed re-addition of cleanup work queue (found by Daniel Vetter)
v4: Rebase.
v5: Actual removal of intel_ctx_submit_request. Update both tail and postfix
pointer in __i915_add_request (found by Thomas Daniel)
v6: Removed unrelated changes
Signed-off-by: Nick Hoath <nicholas.hoath@intel.com>
Reviewed-by: Thomas Daniel <thomas.daniel@intel.com>
[danvet: Reformat comment with strange linebreaks.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 81d102a..3a32e0d 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2116,6 +2116,26 @@
struct list_head client_list;
uint32_t uniq;
+
+ /**
+ * The ELSP only accepts two elements at a time, so we queue
+ * context/tail pairs on a given queue (ring->execlist_queue) until the
+ * hardware is available. The queue serves a double purpose: we also use
+ * it to keep track of the up to 2 contexts currently in the hardware
+ * (usually one in execution and the other queued up by the GPU): We
+ * only remove elements from the head of the queue when the hardware
+ * informs us that an element has been completed.
+ *
+ * All accesses to the queue are mediated by a spinlock
+ * (ring->execlist_lock).
+ */
+
+ /** Execlist link in the submission queue.*/
+ struct list_head execlist_link;
+
+ /** Execlists no. of times this request has been sent to the ELSP */
+ int elsp_submitted;
+
};
void i915_gem_request_free(struct kref *req_ref);