1 files changed, 87 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/posix/io.c b/drivers/gpu/nvgpu/os/posix/io.c
new file mode 100644
index 00000000..7bab8af6
--- /dev/null
+++ b/drivers/gpu/nvgpu/os/posix/io.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#include <nvgpu/io.h>
+#include <nvgpu/io_usermode.h>
+#include <nvgpu/bug.h>
+
+/*
+ * For now none of these make sense to execute in userspace. Eventually we
+ * may want to use these to verify certain register read/write sequences
+ * but for now, just hang.
+ */
+
+void nvgpu_writel(struct gk20a *g, u32 r, u32 v)
+{
+        BUG();
+}
+
+void nvgpu_writel_relaxed(struct gk20a *g, u32 r, u32 v)
+{
+        BUG();
+}
+
+u32 nvgpu_readl(struct gk20a *g, u32 r)
+{
+        BUG();
+
+        return 0;
+}
+
+u32 __nvgpu_readl(struct gk20a *g, u32 r)
+{
+        BUG();
+
+        return 0;
+}
+
+void nvgpu_writel_loop(struct gk20a *g, u32 r, u32 v)
+{
+        BUG();
+}
+
+void nvgpu_bar1_writel(struct gk20a *g, u32 b, u32 v)
+{
+        BUG();
+}
+
+u32 nvgpu_bar1_readl(struct gk20a *g, u32 b)
+{
+        BUG();
+
+        return 0;
+}
+
+bool nvgpu_io_exists(struct gk20a *g)
+{
+        return false;
+}
+
+bool nvgpu_io_valid_reg(struct gk20a *g, u32 r)
+{
+        return false;
+}
+
+void nvgpu_usermode_writel(struct gk20a *g, u32 r, u32 v)
+{
+        BUG();
+}