Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/core/subdev.c b/kernel/drivers/gpu/drm/nouveau/nvkm/core/subdev.c
new file mode 100644 (file)
index 0000000..c5fb3a7
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/core/subdev.c
@@ -0,0 +1,120 @@
+/*
+ * 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/subdev.h>
+#include <core/device.h>
+#include <core/option.h>
+
+struct nvkm_subdev *
+nvkm_subdev(void *obj, int idx)
+{
+       struct nvkm_object *object = nv_object(obj);
+       while (object && !nv_iclass(object, NV_SUBDEV_CLASS))
+               object = object->parent;
+       if (object == NULL || nv_subidx(nv_subdev(object)) != idx)
+               object = nv_device(obj)->subdev[idx];
+       return object ? nv_subdev(object) : NULL;
+}
+
+void
+nvkm_subdev_reset(struct nvkm_object *subdev)
+{
+       nv_trace(subdev, "resetting...\n");
+       nv_ofuncs(subdev)->fini(subdev, false);
+       nv_debug(subdev, "reset\n");
+}
+
+int
+nvkm_subdev_init(struct nvkm_subdev *subdev)
+{
+       int ret = nvkm_object_init(&subdev->object);
+       if (ret)
+               return ret;
+
+       nvkm_subdev_reset(&subdev->object);
+       return 0;
+}
+
+int
+_nvkm_subdev_init(struct nvkm_object *object)
+{
+       return nvkm_subdev_init(nv_subdev(object));
+}
+
+int
+nvkm_subdev_fini(struct nvkm_subdev *subdev, bool suspend)
+{
+       if (subdev->unit) {
+               nv_mask(subdev, 0x000200, subdev->unit, 0x00000000);
+               nv_mask(subdev, 0x000200, subdev->unit, subdev->unit);
+       }
+
+       return nvkm_object_fini(&subdev->object, suspend);
+}
+
+int
+_nvkm_subdev_fini(struct nvkm_object *object, bool suspend)
+{
+       return nvkm_subdev_fini(nv_subdev(object), suspend);
+}
+
+void
+nvkm_subdev_destroy(struct nvkm_subdev *subdev)
+{
+       int subidx = nv_hclass(subdev) & 0xff;
+       nv_device(subdev)->subdev[subidx] = NULL;
+       nvkm_object_destroy(&subdev->object);
+}
+
+void
+_nvkm_subdev_dtor(struct nvkm_object *object)
+{
+       nvkm_subdev_destroy(nv_subdev(object));
+}
+
+int
+nvkm_subdev_create_(struct nvkm_object *parent, struct nvkm_object *engine,
+                   struct nvkm_oclass *oclass, u32 pclass,
+                   const char *subname, const char *sysname,
+                   int size, void **pobject)
+{
+       struct nvkm_subdev *subdev;
+       int ret;
+
+       ret = nvkm_object_create_(parent, engine, oclass, pclass |
+                                 NV_SUBDEV_CLASS, size, pobject);
+       subdev = *pobject;
+       if (ret)
+               return ret;
+
+       __mutex_init(&subdev->mutex, subname, &oclass->lock_class_key);
+       subdev->name = subname;
+
+       if (parent) {
+               struct nvkm_device *device = nv_device(parent);
+               subdev->debug = nvkm_dbgopt(device->dbgopt, subname);
+               subdev->mmio  = nv_subdev(device)->mmio;
+       }
+
+       return 0;
+}