1 /*
2 * Port on Texas Instruments TMS320C6x architecture
3 *
4 * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
5 * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
6 *
7 * Modified for 2.6.34: Mark Salter <msalter@redhat.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13 #ifndef _ASM_C6X_TIMEX_H
14 #define _ASM_C6X_TIMEX_H
15
16 #define CLOCK_TICK_RATE ((1000 * 1000000UL) / 6)
17
18 /* 64-bit timestamp */
19 typedef unsigned long long cycles_t;
20
get_cycles(void)21 static inline cycles_t get_cycles(void)
22 {
23 unsigned l, h;
24
25 asm volatile (" dint\n"
26 " mvc .s2 TSCL,%0\n"
27 " mvc .s2 TSCH,%1\n"
28 " rint\n"
29 : "=b"(l), "=b"(h));
30 return ((cycles_t)h << 32) | l;
31 }
32
33 #endif /* _ASM_C6X_TIMEX_H */
34