freedreno: add bo cache

[platform/upstream/libdrm.git] / freedreno / kgsl / kgsl_bo.c

diff --git a/freedreno/kgsl/kgsl_bo.c b/freedreno/kgsl/kgsl_bo.c
index 0d019cb..585851c 100644 (file)
--- a/freedreno/kgsl/kgsl_bo.c
+++ b/freedreno/kgsl/kgsl_bo.c
@@ -80,9 +80,24 @@ static int kgsl_bo_offset(struct fd_bo *bo, uint64_t *offset)
 static int kgsl_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
 {
        uint32_t timestamp = kgsl_bo_get_timestamp(to_kgsl_bo(bo));
-       if (timestamp) {
-               fd_pipe_wait(pipe, timestamp);
+
+       if (op & DRM_FREEDRENO_PREP_NOSYNC) {
+               uint32_t current;
+               int ret;
+
+               ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), &current);
+               if (ret)
+                       return ret;
+
+               if (timestamp > current)
+                       return -EBUSY;
+
+               return 0;
        }
+
+       if (timestamp)
+               fd_pipe_wait(pipe, timestamp);
+
        return 0;
 }