drm/i915: Report request restarts for both execlists/guc

As we now share the execlist_port[] tracking for both execlists/guc, we
can reset the inflight count on both and report which requests are being
restarted.

Suggested-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170425103835.31871-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 7df278f..7a5f164 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1148,14 +1148,11 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
        return ret;
 }
 
-static u32 port_seqno(struct execlist_port *port)
-{
-       return port->request ? port->request->global_seqno : 0;
-}
-
 static int gen8_init_common_ring(struct intel_engine_cs *engine)
 {
        struct drm_i915_private *dev_priv = engine->i915;
+       struct execlist_port *port = engine->execlist_port;
+       unsigned int n;
        int ret;
 
        ret = intel_mocs_init_engine(engine);
@@ -1176,16 +1173,22 @@ static int gen8_init_common_ring(struct intel_engine_cs *engine)
 
        /* After a GPU reset, we may have requests to replay */
        clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
-       if (!i915.enable_guc_submission && !execlists_elsp_idle(engine)) {
-               DRM_DEBUG_DRIVER("Restarting %s from requests [0x%x, 0x%x]\n",
-                                engine->name,
-                                port_seqno(&engine->execlist_port[0]),
-                                port_seqno(&engine->execlist_port[1]));
-               engine->execlist_port[0].count = 0;
-               engine->execlist_port[1].count = 0;
-               execlists_submit_ports(engine);
+
+       for (n = 0; n < ARRAY_SIZE(engine->execlist_port); n++) {
+               if (!port[n].request)
+                       break;
+
+               DRM_DEBUG_DRIVER("Restarting %s:%d from 0x%x\n",
+                                engine->name, n,
+                                port[n].request->global_seqno);
+
+               /* Discard the current inflight count */
+               port[n].count = 0;
        }
 
+       if (!i915.enable_guc_submission && !execlists_elsp_idle(engine))
+               execlists_submit_ports(engine);
+
        return 0;
 }