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Diffstat (limited to 'arch/xtensa/include/asm/timex.h')
-rw-r--r-- | arch/xtensa/include/asm/timex.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h new file mode 100644 index 000000000..3f2462f2d --- /dev/null +++ b/arch/xtensa/include/asm/timex.h @@ -0,0 +1,60 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2013 Tensilica Inc. + */ + +#ifndef _XTENSA_TIMEX_H +#define _XTENSA_TIMEX_H + +#include <asm/processor.h> + +#if XCHAL_NUM_TIMERS > 0 && \ + XTENSA_INT_LEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL +# define LINUX_TIMER 0 +# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT +#elif XCHAL_NUM_TIMERS > 1 && \ + XTENSA_INT_LEVEL(XCHAL_TIMER1_INTERRUPT) <= XCHAL_EXCM_LEVEL +# define LINUX_TIMER 1 +# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT +#elif XCHAL_NUM_TIMERS > 2 && \ + XTENSA_INT_LEVEL(XCHAL_TIMER2_INTERRUPT) <= XCHAL_EXCM_LEVEL +# define LINUX_TIMER 2 +# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT +#else +# error "Bad timer number for Linux configurations!" +#endif + +extern unsigned long ccount_freq; + +void local_timer_setup(unsigned cpu); + +/* + * Register access. + */ + +static inline unsigned long get_ccount (void) +{ + return xtensa_get_sr(ccount); +} + +static inline void set_ccount (unsigned long ccount) +{ + xtensa_set_sr(ccount, ccount); +} + +static inline unsigned long get_linux_timer (void) +{ + return xtensa_get_sr(SREG_CCOMPARE + LINUX_TIMER); +} + +static inline void set_linux_timer (unsigned long ccompare) +{ + xtensa_set_sr(ccompare, SREG_CCOMPARE + LINUX_TIMER); +} + +#include <asm-generic/timex.h> + +#endif /* _XTENSA_TIMEX_H */ |