1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/gpu/mali400/r3p2/mali/linux/mali_sync.h b/drivers/gpu/mali400/r3p2/mali/linux/mali_sync.h
new file mode 100644
index 0000000..4415ec6
--- /dev/null
+++ b/drivers/gpu/mali400/r3p2/mali/linux/mali_sync.h
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+/**
+ * @file mali_sync.h
+ *
+ */
+
+#ifndef _MALI_SYNC_H_
+#define _MALI_SYNC_H_
+
+#ifdef CONFIG_SYNC
+
+#include <linux/seq_file.h>
+#include <linux/sync.h>
+
+#define MALI_SYNC_TIMED_FENCE_TIMEOUT 4000 /* 4s */
+
+/*
+ * Create a stream object.
+ * Built on top of timeline object.
+ * Exposed as a file descriptor.
+ * Life-time controlled via the file descriptor:
+ * - dup to add a ref
+ * - close to remove a ref
+ */
+_mali_osk_errcode_t mali_stream_create(const char * name, int * out_fd);
+
+/*
+ * Create a fence in a stream object
+ */
+struct sync_pt *mali_stream_create_point(int tl_fd);
+int mali_stream_create_fence(struct sync_pt *pt);
+int mali_stream_create_empty_fence(int tl_fd);
+
+/**
+ * Commit an empty timed fence
+ *
+ * This stops the timer of the empty fence and returns wether or not the fence
+ * is still suitable for use.
+ *
+ * Returns -ETIME if fence is already signalled, in which case it can not be
+ * used, or 0 when the timer was stopped and the fence is OK to use.
+ */
+int mali_sync_timed_commit(struct sync_pt *pt);
+
+/*
+ * Validate a fd to be a valid fence
+ * No reference is taken.
+ *
+ * This function is only usable to catch unintentional user errors early,
+ * it does not stop malicious code changing the fd after this function returns.
+ */
+_mali_osk_errcode_t mali_fence_validate(int fd);
+
+
+/* Returns true if the specified timeline is allocated by Mali */
+int mali_sync_timeline_is_ours(struct sync_timeline *timeline);
+
+/* Allocates a timeline for Mali
+ *
+ * One timeline should be allocated per API context.
+ */
+struct sync_timeline *mali_sync_timeline_alloc(const char *name);
+
+/* Allocates a sync point within the timeline.
+ *
+ * The timeline must be the one allocated by mali_sync_timeline_alloc
+ *
+ * Sync points must be triggered in *exactly* the same order as they are allocated.
+ */
+struct sync_pt *mali_sync_pt_alloc(struct sync_timeline *parent);
+
+/* Allocates a timed sync point within the timeline.
+ *
+ * The timeline must be the one allocated by mali_sync_timeline_alloc
+ *
+ * Sync points must be triggered in *exactly* the same order as they are allocated.
+ *
+ * Timed sync points should be backed by a proper event before reaching the
+ * timeout. If timeout is reached the fence will be signalled with an error (-ETIME).
+ */
+struct sync_pt *mali_sync_timed_pt_alloc(struct sync_timeline *parent);
+
+/* Signals a particular sync point
+ *
+ * Sync points must be triggered in *exactly* the same order as they are allocated.
+ *
+ * If they are signalled in the wrong order then a message will be printed in debug
+ * builds and otherwise attempts to signal order sync_pts will be ignored.
+ */
+void mali_sync_signal_pt(struct sync_pt *pt, int error);
+
+#endif /* CONFIG_SYNC */
+#endif /* _MALI_SYNC_H_ */