drm/etnaviv: bring back progress check in job timeout handler

[sfrench/cifs-2.6.git] / drivers / gpu / drm / etnaviv / etnaviv_sched.c

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
index a74eb57af15bc65ba2ff4a2ed3906da29afe959b..50d6b88cb7aab3f99025829e1f544aae957d6d7f 100644 (file)
--- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
@@ -10,6 +10,7 @@
 #include "etnaviv_gem.h"
 #include "etnaviv_gpu.h"
 #include "etnaviv_sched.h"
+#include "state.xml.h"
 
 static int etnaviv_job_hang_limit = 0;
 module_param_named(job_hang_limit, etnaviv_job_hang_limit, int , 0444);
@@ -85,6 +86,29 @@ static void etnaviv_sched_timedout_job(struct drm_sched_job *sched_job)
 {
        struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
        struct etnaviv_gpu *gpu = submit->gpu;
+       u32 dma_addr;
+       int change;
+
+       /*
+        * If the GPU managed to complete this jobs fence, the timout is
+        * spurious. Bail out.
+        */
+       if (fence_completed(gpu, submit->out_fence->seqno))
+               return;
+
+       /*
+        * If the GPU is still making forward progress on the front-end (which
+        * should never loop) we shift out the timeout to give it a chance to
+        * finish the job.
+        */
+       dma_addr = gpu_read(gpu, VIVS_FE_DMA_ADDRESS);
+       change = dma_addr - gpu->hangcheck_dma_addr;
+       if (change < 0 || change > 16) {
+               gpu->hangcheck_dma_addr = dma_addr;
+               schedule_delayed_work(&sched_job->work_tdr,
+                                     sched_job->sched->timeout);
+               return;
+       }
 
        /* block scheduler */
        kthread_park(gpu->sched.thread);