3 * (C) COPYRIGHT ARM Limited. All rights reserved.
5 * This program is free software and is provided to you under the terms of the
6 * GNU General Public License version 2 as published by the Free Software
7 * Foundation, and any use by you of this program is subject to the terms
10 * A copy of the licence is included with the program, and can also be obtained
11 * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
12 * Boston, MA 02110-1301, USA.
21 * @file mali_kbase_sync.h
25 #ifndef MALI_KBASE_SYNC_H
26 #define MALI_KBASE_SYNC_H
29 #include <malisw/mali_malisw.h>
32 * Create a stream object.
33 * Built on top of timeline object.
34 * Exposed as a file descriptor.
35 * Life-time controlled via the file descriptor:
37 * - close to remove a ref
39 mali_error kbase_stream_create(const char *name, int *const out_fd);
42 * Create a fence in a stream object
44 int kbase_stream_create_fence(int tl_fd);
47 * Validate a fd to be a valid fence
48 * No reference is taken.
50 * This function is only usable to catch unintentional user errors early,
51 * it does not stop malicious code changing the fd after this function returns.
53 mali_error kbase_fence_validate(int fd);
55 /* Returns true if the specified timeline is allocated by Mali */
56 int kbase_sync_timeline_is_ours(struct sync_timeline *timeline);
58 /* Allocates a timeline for Mali
60 * One timeline should be allocated per API context.
62 struct sync_timeline *kbase_sync_timeline_alloc(const char *name);
64 /* Allocates a sync point within the timeline.
66 * The timeline must be the one allocated by kbase_sync_timeline_alloc
68 * Sync points must be triggered in *exactly* the same order as they are allocated.
70 struct sync_pt *kbase_sync_pt_alloc(struct sync_timeline *parent);
72 /* Signals a particular sync point
74 * Sync points must be triggered in *exactly* the same order as they are allocated.
76 * If they are signalled in the wrong order then a message will be printed in debug
77 * builds and otherwise attempts to signal order sync_pts will be ignored.
79 * result can be negative to indicate error, any other value is interpreted as success.
81 void kbase_sync_signal_pt(struct sync_pt *pt, int result);