Mali Bifrost DDK r0p0 KMD

Provenance:
 6fe4d9f9a (collaborate/EAC/b_r0p0)
 BX304L01B-BU-00000-r0p0-06rel0
 BX304L06A-BU-00000-r0p0-06rel0

Signed-off-by: Sidath Senanayake <sidaths@google.com>
Change-Id: I128cfe0586d31f83f3158a7ab98fa40dca4b4349

1 files changed, 76 insertions, 0 deletions

diff --git a/mali_kbase/mali_kbase_disjoint_events.c b/mali_kbase/mali_kbase_disjoint_events.c
new file mode 100644
index 0000000..f70bccc
--- /dev/null
+++ b/mali_kbase/mali_kbase_disjoint_events.c
@@ -0,0 +1,76 @@
+/*
+ *
+ * (C) COPYRIGHT 2014 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.
+ *
+ */
+
+
+
+/*
+ * Base kernel disjoint events helper functions
+ */
+
+#include <mali_kbase.h>
+
+void kbase_disjoint_init(struct kbase_device *kbdev)
+{
+	KBASE_DEBUG_ASSERT(kbdev != NULL);
+
+	atomic_set(&kbdev->disjoint_event.count, 0);
+	atomic_set(&kbdev->disjoint_event.state, 0);
+}
+
+/* increment the disjoint event count */
+void kbase_disjoint_event(struct kbase_device *kbdev)
+{
+	KBASE_DEBUG_ASSERT(kbdev != NULL);
+
+	atomic_inc(&kbdev->disjoint_event.count);
+}
+
+/* increment the state and the event counter */
+void kbase_disjoint_state_up(struct kbase_device *kbdev)
+{
+	KBASE_DEBUG_ASSERT(kbdev != NULL);
+
+	atomic_inc(&kbdev->disjoint_event.state);
+
+	kbase_disjoint_event(kbdev);
+}
+
+/* decrement the state */
+void kbase_disjoint_state_down(struct kbase_device *kbdev)
+{
+	KBASE_DEBUG_ASSERT(kbdev != NULL);
+	KBASE_DEBUG_ASSERT(atomic_read(&kbdev->disjoint_event.state) > 0);
+
+	kbase_disjoint_event(kbdev);
+
+	atomic_dec(&kbdev->disjoint_event.state);
+}
+
+/* increments the count only if the state is > 0 */
+void kbase_disjoint_event_potential(struct kbase_device *kbdev)
+{
+	KBASE_DEBUG_ASSERT(kbdev != NULL);
+
+	if (atomic_read(&kbdev->disjoint_event.state))
+		kbase_disjoint_event(kbdev);
+}
+
+u32 kbase_disjoint_event_get(struct kbase_device *kbdev)
+{
+	KBASE_DEBUG_ASSERT(kbdev != NULL);
+
+	return atomic_read(&kbdev->disjoint_event.count);
+}
+KBASE_EXPORT_TEST_API(kbase_disjoint_event_get);