drm/i915: Convert __wait_seqno() to __wait_request()

Now that all code above is using request structures instead of seqno values, it
is possible to convert  __wait_seqno() itself. Internally, it is still calling
i915_seqno_passed(), this will be updated later in the series. This step is just
changing the parameter list and function name.

For: VIZ-4377
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Thomas Daniel <Thomas.Daniel@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

3 files changed, 24 insertions, 30 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9a9372a42c97..69a0e00039c6 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2625,7 +2625,7 @@ int __i915_add_request(struct intel_engine_cs *ring,
                        u32 *seqno);
 #define i915_add_request(ring, seqno) \
         __i915_add_request(ring, NULL, NULL, seqno)
-int __i915_wait_seqno(struct intel_engine_cs *ring, u32 seqno,
+int __i915_wait_request(struct drm_i915_gem_request *req,
                         unsigned reset_counter,
                         bool interruptible,
                         s64 *timeout,
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 1089f0ff5ee3..3f56f50900bd 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1189,10 +1189,9 @@ static bool can_wait_boost(struct drm_i915_file_private *file_priv)
 }
 
 /**
- * __i915_wait_seqno - wait until execution of seqno has finished
- * @ring: the ring expected to report seqno
- * @seqno: duh!
- * @reset_counter: reset sequence associated with the given seqno
+ * __i915_wait_request - wait until execution of request has finished
+ * @req: duh!
+ * @reset_counter: reset sequence associated with the given request
  * @interruptible: do an interruptible wait (normally yes)
  * @timeout: in - how long to wait (NULL forever); out - how much time remaining
  *
@@ -1203,15 +1202,16 @@ static bool can_wait_boost(struct drm_i915_file_private *file_priv)
  * reset_counter _must_ be read before, and an appropriate smp_rmb must be
  * inserted.
  *
- * Returns 0 if the seqno was found within the alloted time. Else returns the
+ * Returns 0 if the request was found within the alloted time. Else returns the
  * errno with remaining time filled in timeout argument.
  */
-int __i915_wait_seqno(struct intel_engine_cs *ring, u32 seqno,
+int __i915_wait_request(struct drm_i915_gem_request *req,
                         unsigned reset_counter,
                         bool interruptible,
                         s64 *timeout,
                         struct drm_i915_file_private *file_priv)
 {
+        struct intel_engine_cs *ring = i915_gem_request_get_ring(req);
         struct drm_device *dev = ring->dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
         const bool irq_test_in_progress =
@@ -1223,7 +1223,8 @@ int __i915_wait_seqno(struct intel_engine_cs *ring, u32 seqno,
 
         WARN(!intel_irqs_enabled(dev_priv), "IRQs disabled");
 
-        if (i915_seqno_passed(ring->get_seqno(ring, true), seqno))
+        if (i915_seqno_passed(ring->get_seqno(ring, true),
+                              i915_gem_request_get_seqno(req)))
                 return 0;
 
         timeout_expire = timeout ? jiffies + nsecs_to_jiffies((u64)*timeout) : 0;
@@ -1240,7 +1241,8 @@ int __i915_wait_seqno(struct intel_engine_cs *ring, u32 seqno,
                 return -ENODEV;
 
         /* Record current time in case interrupted by signal, or wedged */
-        trace_i915_gem_request_wait_begin(ring, seqno);
+        trace_i915_gem_request_wait_begin(i915_gem_request_get_ring(req),
+                                          i915_gem_request_get_seqno(req));
         before = ktime_get_raw_ns();
         for (;;) {
                 struct timer_list timer;
@@ -1259,7 +1261,8 @@ int __i915_wait_seqno(struct intel_engine_cs *ring, u32 seqno,
                         break;
                 }
 
-                if (i915_seqno_passed(ring->get_seqno(ring, false), seqno)) {
+                if (i915_seqno_passed(ring->get_seqno(ring, false),
+                                      i915_gem_request_get_seqno(req))) {
                         ret = 0;
                         break;
                 }
@@ -1291,7 +1294,8 @@ int __i915_wait_seqno(struct intel_engine_cs *ring, u32 seqno,
                 }
         }
         now = ktime_get_raw_ns();
-        trace_i915_gem_request_wait_end(ring, seqno);
+        trace_i915_gem_request_wait_end(i915_gem_request_get_ring(req),
+                                        i915_gem_request_get_seqno(req));
 
         if (!irq_test_in_progress)
                 ring->irq_put(ring);
@@ -1338,8 +1342,8 @@ i915_wait_request(struct drm_i915_gem_request *req)
 
         reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
         i915_gem_request_reference(req);
-        ret = __i915_wait_seqno(req->ring, i915_gem_request_get_seqno(req),
-                                reset_counter, interruptible, NULL, NULL);
+        ret = __i915_wait_request(req, reset_counter,
+                                  interruptible, NULL, NULL);
         i915_gem_request_unreference(req);
         return ret;
 }
@@ -1395,7 +1399,6 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
         struct drm_i915_gem_request *req;
         struct drm_device *dev = obj->base.dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_engine_cs *ring = obj->ring;
         unsigned reset_counter;
         int ret;
 
@@ -1417,8 +1420,7 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
         reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
         i915_gem_request_reference(req);
         mutex_unlock(&dev->struct_mutex);
-        ret = __i915_wait_seqno(ring, i915_gem_request_get_seqno(req),
-                                reset_counter, true, NULL, file_priv);
+        ret = __i915_wait_request(req, reset_counter, true, NULL, file_priv);
         mutex_lock(&dev->struct_mutex);
         i915_gem_request_unreference(req);
         if (ret)
@@ -2917,9 +2919,7 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
         struct drm_i915_gem_wait *args = data;
         struct drm_i915_gem_object *obj;
         struct drm_i915_gem_request *req;
-        struct intel_engine_cs *ring = NULL;
         unsigned reset_counter;
-        u32 seqno = 0;
         int ret = 0;
 
         if (args->flags != 0)
@@ -2944,9 +2944,6 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
                 goto out;
 
         req = obj->last_read_req;
-        seqno = i915_gem_request_get_seqno(req);
-        WARN_ON(seqno == 0);
-        ring = obj->ring;
 
         /* Do this after OLR check to make sure we make forward progress polling
          * on this IOCTL with a timeout <=0 (like busy ioctl)
@@ -2961,8 +2958,8 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
         i915_gem_request_reference(req);
         mutex_unlock(&dev->struct_mutex);
 
-        ret = __i915_wait_seqno(ring, seqno, reset_counter, true, &args->timeout_ns,
-                           file->driver_priv);
+        ret = __i915_wait_request(req, reset_counter, true, &args->timeout_ns,
+                                  file->driver_priv);
         mutex_lock(&dev->struct_mutex);
         i915_gem_request_unreference(req);
         mutex_unlock(&dev->struct_mutex);
@@ -4127,9 +4124,7 @@ i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
         if (target == NULL)
                 return 0;
 
-        ret = __i915_wait_seqno(i915_gem_request_get_ring(target),
-                                i915_gem_request_get_seqno(target),
-                                reset_counter, true, NULL, NULL);
+        ret = __i915_wait_request(target, reset_counter, true, NULL, NULL);
         if (ret == 0)
                 queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0);
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 61c402485f36..0eaa1f48efcf 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9618,10 +9618,9 @@ static void intel_mmio_flip_work_func(struct work_struct *work)
 
         mmio_flip = &crtc->mmio_flip;
         if (mmio_flip->req)
-                WARN_ON(__i915_wait_seqno(i915_gem_request_get_ring(mmio_flip->req),
-                                          i915_gem_request_get_seqno(mmio_flip->req),
-                                          crtc->reset_counter,
-                                          false, NULL, NULL) != 0);
+                WARN_ON(__i915_wait_request(mmio_flip->req,
+                                            crtc->reset_counter,
+                                            false, NULL, NULL) != 0);
 
         intel_do_mmio_flip(crtc);
         if (mmio_flip->req) {