1 /*
2 *
3 * (C) COPYRIGHT 2014-2015 ARM Limited. All rights reserved.
4 *
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
8 * of such GNU licence.
9 *
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.
13 *
14 */
15
16
17
18 #ifndef _KBASE_BACKEND_TIME_H_
19 #define _KBASE_BACKEND_TIME_H_
20
21 /**
22 * kbase_backend_get_gpu_time() - Get current GPU time
23 * @kbdev: Device pointer
24 * @cycle_counter: Pointer to u64 to store cycle counter in
25 * @system_time: Pointer to u64 to store system time in
26 * @ts: Pointer to struct timespec64 to store current monotonic
27 * time in
28 */
29 void kbase_backend_get_gpu_time(struct kbase_device *kbdev, u64 *cycle_counter,
30 u64 *system_time, struct timespec64 *ts);
31
32 /**
33 * kbase_wait_write_flush() - Wait for GPU write flush
34 * @kctx: Context pointer
35 *
36 * Wait 1000 GPU clock cycles. This delay is known to give the GPU time to flush
37 * its write buffer.
38 *
39 * If GPU resets occur then the counters are reset to zero, the delay may not be
40 * as expected.
41 *
42 * This function is only in use for BASE_HW_ISSUE_6367
43 */
44 #ifdef CONFIG_MALI_NO_MALI
kbase_wait_write_flush(struct kbase_context * kctx)45 static inline void kbase_wait_write_flush(struct kbase_context *kctx)
46 {
47 }
48 #else
49 void kbase_wait_write_flush(struct kbase_context *kctx);
50 #endif
51
52 #endif /* _KBASE_BACKEND_TIME_H_ */
53