Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / core / engine.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c b/kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c
new file mode 100644 (file)
index 0000000..6082017
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#include <core/engine.h>
+#include <core/device.h>
+#include <core/option.h>
+
+struct nvkm_engine *
+nvkm_engine(void *obj, int idx)
+{
+       obj = nvkm_subdev(obj, idx);
+       if (obj && nv_iclass(obj, NV_ENGINE_CLASS))
+               return nv_engine(obj);
+       return NULL;
+}
+
+int
+nvkm_engine_create_(struct nvkm_object *parent, struct nvkm_object *engobj,
+                   struct nvkm_oclass *oclass, bool enable,
+                   const char *iname, const char *fname,
+                   int length, void **pobject)
+{
+       struct nvkm_engine *engine;
+       int ret;
+
+       ret = nvkm_subdev_create_(parent, engobj, oclass, NV_ENGINE_CLASS,
+                                 iname, fname, length, pobject);
+       engine = *pobject;
+       if (ret)
+               return ret;
+
+       if (parent) {
+               struct nvkm_device *device = nv_device(parent);
+               int engidx = nv_engidx(engine);
+
+               if (device->disable_mask & (1ULL << engidx)) {
+                       if (!nvkm_boolopt(device->cfgopt, iname, false)) {
+                               nv_debug(engine, "engine disabled by hw/fw\n");
+                               return -ENODEV;
+                       }
+
+                       nv_warn(engine, "ignoring hw/fw engine disable\n");
+               }
+
+               if (!nvkm_boolopt(device->cfgopt, iname, enable)) {
+                       if (!enable)
+                               nv_warn(engine, "disabled, %s=1 to enable\n", iname);
+                       return -ENODEV;
+               }
+       }
+
+       INIT_LIST_HEAD(&engine->contexts);
+       spin_lock_init(&engine->lock);
+       return 0;
+}