[RFC 05/21] drm/i915: Add helper functions to aid seqno -> request transition

[John.C.Harrison@Intel.com]

From: John Harrison <John.C.Harrison@Intel.com>

For: VIZ-4377
Signed-off-by: John.C.Harrison@Intel.com
---
 drivers/gpu/drm/i915/i915_drv.h         |   12 ++++++++++++
 drivers/gpu/drm/i915/intel_ringbuffer.h |    7 +++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e1858e7..62c9f66 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1946,6 +1946,18 @@ struct drm_i915_gem_request {
 
 void i915_gem_request_free(struct kref *req_ref);
 
+static inline uint32_t
+i915_gem_request_get_seqno(struct drm_i915_gem_request *req)
+{
+	return req ? req->seqno : 0;
+}
+
+static inline struct intel_engine_cs *
+i915_gem_request_get_ring(struct drm_i915_gem_request *req)
+{
+	return req ? req->ring : NULL;
+}
+
 static inline void
 i915_gem_request_reference(struct drm_i915_gem_request *req)
 {
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 96479c8..cc1b62f 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -435,6 +435,13 @@ static inline u32 intel_ring_get_seqno(struct intel_engine_cs *ring)
 	return ring->outstanding_lazy_seqno;
 }
 
+static inline struct drm_i915_gem_request *
+intel_ring_get_request(struct intel_engine_cs *ring)
+{
+	BUG_ON(ring->preallocated_lazy_request == NULL);
+	return ring->preallocated_lazy_request;
+}
+
 static inline void i915_trace_irq_get(struct intel_engine_cs *ring, u32 seqno)
 {
 	if (ring->trace_irq_seqno == 0 && ring->irq_get(ring))
-- 
1.7.9.5