These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / subdev / bar / g84.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c
new file mode 100644 (file)
index 0000000..ef71713
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2015 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 <bskeggs@redhat.com>
+ */
+#include "nv50.h"
+
+#include <subdev/timer.h>
+
+void
+g84_bar_flush(struct nvkm_bar *bar)
+{
+       struct nvkm_device *device = bar->subdev.device;
+       unsigned long flags;
+       spin_lock_irqsave(&bar->lock, flags);
+       nvkm_wr32(device, 0x070000, 0x00000001);
+       nvkm_msec(device, 2000,
+               if (!(nvkm_rd32(device, 0x070000) & 0x00000002))
+                       break;
+       );
+       spin_unlock_irqrestore(&bar->lock, flags);
+}
+
+static const struct nvkm_bar_func
+g84_bar_func = {
+       .dtor = nv50_bar_dtor,
+       .oneinit = nv50_bar_oneinit,
+       .init = nv50_bar_init,
+       .kmap = nv50_bar_kmap,
+       .umap = nv50_bar_umap,
+       .flush = g84_bar_flush,
+};
+
+int
+g84_bar_new(struct nvkm_device *device, int index, struct nvkm_bar **pbar)
+{
+       return nv50_bar_new_(&g84_bar_func, device, index, 0x200, pbar);
+}