From 546a39546c64ad7e73796c5508ef5487af42cae2 Mon Sep 17 00:00:00 2001 From: Aurelien Jacquiot Date: Tue, 4 Oct 2011 11:05:33 -0400 Subject: C6X: time management Original port to early 2.6 kernel using TI COFF toolchain. Brought up to date by Mark Salter Signed-off-by: Aurelien Jacquiot Signed-off-by: Mark Salter Reviewed-by: Thomas Gleixner Acked-by: Arnd Bergmann --- arch/c6x/include/asm/timer64.h | 6 ++++++ arch/c6x/include/asm/timex.h | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 arch/c6x/include/asm/timer64.h create mode 100644 arch/c6x/include/asm/timex.h (limited to 'arch/c6x/include') diff --git a/arch/c6x/include/asm/timer64.h b/arch/c6x/include/asm/timer64.h new file mode 100644 index 000000000000..bbe27bb9887e --- /dev/null +++ b/arch/c6x/include/asm/timer64.h @@ -0,0 +1,6 @@ +#ifndef _C6X_TIMER64_H +#define _C6X_TIMER64_H + +extern void __init timer64_init(void); + +#endif /* _C6X_TIMER64_H */ diff --git a/arch/c6x/include/asm/timex.h b/arch/c6x/include/asm/timex.h new file mode 100644 index 000000000000..508c3ec971f9 --- /dev/null +++ b/arch/c6x/include/asm/timex.h @@ -0,0 +1,33 @@ +/* + * Port on Texas Instruments TMS320C6x architecture + * + * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated + * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) + * + * Modified for 2.6.34: Mark Salter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _ASM_C6X_TIMEX_H +#define _ASM_C6X_TIMEX_H + +#define CLOCK_TICK_RATE ((1000 * 1000000UL) / 6) + +/* 64-bit timestamp */ +typedef unsigned long long cycles_t; + +static inline cycles_t get_cycles(void) +{ + unsigned l, h; + + asm volatile (" dint\n" + " mvc .s2 TSCL,%0\n" + " mvc .s2 TSCH,%1\n" + " rint\n" + : "=b"(l), "=b"(h)); + return ((cycles_t)h << 32) | l; +} + +#endif /* _ASM_C6X_TIMEX_H */ -- cgit