1 files changed, 90 insertions, 0 deletions
diff --git a/driver/product/kernel/drivers/gpu/arm/midgard/mali_kbase_context.h b/driver/product/kernel/drivers/gpu/arm/midgard/mali_kbase_context.h
new file mode 100755
index 0000000..a3f5bb0
--- /dev/null
+++ b/driver/product/kernel/drivers/gpu/arm/midgard/mali_kbase_context.h
@@ -0,0 +1,90 @@
+/*
+ *
+ * (C) COPYRIGHT 2011-2016 ARM Limited. All rights reserved.
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms
+ * of such GNU licence.
+ *
+ * A copy of the licence is included with the program, and can also be obtained
+ * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ *
+ */
+
+
+
+#ifndef _KBASE_CONTEXT_H_
+#define _KBASE_CONTEXT_H_
+
+#include <linux/atomic.h>
+
+
+int kbase_context_set_create_flags(struct kbase_context *kctx, u32 flags);
+
+/**
+ * kbase_ctx_flag - Check if @flag is set on @kctx
+ * @kctx: Pointer to kbase context to check
+ * @flag: Flag to check
+ *
+ * Return: true if @flag is set on @kctx, false if not.
+ */
+static inline bool kbase_ctx_flag(struct kbase_context *kctx,
+				      enum kbase_context_flags flag)
+{
+	return atomic_read(&kctx->flags) & flag;
+}
+
+/**
+ * kbase_ctx_flag_clear - Clear @flag on @kctx
+ * @kctx: Pointer to kbase context
+ * @flag: Flag to clear
+ *
+ * Clear the @flag on @kctx. This is done atomically, so other flags being
+ * cleared or set at the same time will be safe.
+ *
+ * Some flags have locking requirements, check the documentation for the
+ * respective flags.
+ */
+static inline void kbase_ctx_flag_clear(struct kbase_context *kctx,
+					enum kbase_context_flags flag)
+{
+#if KERNEL_VERSION(4, 3, 0) > LINUX_VERSION_CODE
+	/*
+	 * Earlier kernel versions doesn't have atomic_andnot() or
+	 * atomic_and(). atomic_clear_mask() was only available on some
+	 * architectures and removed on arm in v3.13 on arm and arm64.
+	 *
+	 * Use a compare-exchange loop to clear the flag on pre 4.3 kernels,
+	 * when atomic_andnot() becomes available.
+	 */
+	int old, new;
+
+	do {
+		old = atomic_read(&kctx->flags);
+		new = old & ~flag;
+
+	} while (atomic_cmpxchg(&kctx->flags, old, new) != old);
+#else
+	atomic_andnot(flag, &kctx->flags);
+#endif
+}
+
+/**
+ * kbase_ctx_flag_set - Set @flag on @kctx
+ * @kctx: Pointer to kbase context
+ * @flag: Flag to clear
+ *
+ * Set the @flag on @kctx. This is done atomically, so other flags being
+ * cleared or set at the same time will be safe.
+ *
+ * Some flags have locking requirements, check the documentation for the
+ * respective flags.
+ */
+static inline void kbase_ctx_flag_set(struct kbase_context *kctx,
+				      enum kbase_context_flags flag)
+{
+	atomic_or(flag, &kctx->flags);
+}
+#endif /* _KBASE_CONTEXT_H_ */