1 files changed, 54 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/enabled.c b/drivers/gpu/nvgpu/common/enabled.c
new file mode 100644
index 00000000..06cbbe34
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/enabled.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2017, 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/enabled.h>
+#include <nvgpu/bitops.h>
+
+#include "gk20a/gk20a.h"
+
+int nvgpu_init_enabled_flags(struct gk20a *g)
+{
+        /*
+         * Zero all flags initially. Flags that should be set to non-zero states
+         * can be done so during driver init.
+         */
+        g->enabled_flags = nvgpu_kzalloc(g,
+                                         BITS_TO_LONGS(NVGPU_MAX_ENABLED_BITS) *
+                                         sizeof(unsigned long));
+        if (!g->enabled_flags)
+                return -ENOMEM;
+
+        return 0;
+}
+
+bool nvgpu_is_enabled(struct gk20a *g, int flag)
+{
+        return test_bit(flag, g->enabled_flags);
+}
+
+bool __nvgpu_set_enabled(struct gk20a *g, int flag, bool state)
+{
+        if (state)
+                return test_and_set_bit(flag, g->enabled_flags);
+        else
+                return test_and_clear_bit(flag, g->enabled_flags);
+}