2 * Copyright (C) 2010-2011, 2013-2014, 2016 ARM Limited. All rights reserved.
4 * This program is free software and is provided to you under the terms of the GNU General Public License version 2
5 * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
7 * A copy of the licence is included with the program, and can also be obtained from Free Software
8 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
11 #ifndef __MALI_TIMESTAMP_H__
12 #define __MALI_TIMESTAMP_H__
16 MALI_STATIC_INLINE _mali_osk_errcode_t _mali_timestamp_reset(void)
19 * reset counters and overflow flags
22 u32 mask = (1 << 0) | /* enable all three counters */
23 (0 << 1) | /* reset both Count Registers to 0x0 */
24 (1 << 2) | /* reset the Cycle Counter Register to 0x0 */
25 (0 << 3) | /* 1 = Cycle Counter Register counts every 64th processor clock cycle */
26 (0 << 4) | /* Count Register 0 interrupt enable */
27 (0 << 5) | /* Count Register 1 interrupt enable */
28 (0 << 6) | /* Cycle Counter interrupt enable */
29 (0 << 8) | /* Count Register 0 overflow flag (clear or write, flag on read) */
30 (0 << 9) | /* Count Register 1 overflow flag (clear or write, flag on read) */
31 (1 << 10); /* Cycle Counter Register overflow flag (clear or write, flag on read) */
33 __asm__ __volatile__("MCR p15, 0, %0, c15, c12, 0" : : "r"(mask));
35 return _MALI_OSK_ERR_OK;
38 MALI_STATIC_INLINE u64 _mali_timestamp_get(void)
42 /* this is for the clock cycles */
43 __asm__ __volatile__("MRC p15, 0, %0, c15, c12, 1" : "=r"(result));
48 #endif /* __MALI_TIMESTAMP_H__ */