1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Port on Texas Instruments TMS320C6x architecture
4 *
5 * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
6 * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
7 *
8 * Modified for 2.6.34: Mark Salter <msalter@redhat.com>
9 */
10 #ifndef _ASM_C6X_TIMEX_H
11 #define _ASM_C6X_TIMEX_H
12
13 #define CLOCK_TICK_RATE ((1000 * 1000000UL) / 6)
14
15 /* 64-bit timestamp */
16 typedef unsigned long long cycles_t;
17
18 static inline cycles_t get_cycles(void)
19 {
20 unsigned l, h;
21
22 asm volatile (" dint\n"
23 " mvc .s2 TSCL,%0\n"
24 " mvc .s2 TSCH,%1\n"
25 " rint\n"
26 : "=b"(l), "=b"(h));
27 return ((cycles_t)h << 32) | l;
28 }
29
30 #endif /* _ASM_C6X_TIMEX_H */