diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/score603e/timer/timer.c')
-rw-r--r-- | c/src/lib/libbsp/powerpc/score603e/timer/timer.c | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/c/src/lib/libbsp/powerpc/score603e/timer/timer.c b/c/src/lib/libbsp/powerpc/score603e/timer/timer.c deleted file mode 100644 index f1f131273c..0000000000 --- a/c/src/lib/libbsp/powerpc/score603e/timer/timer.c +++ /dev/null @@ -1,77 +0,0 @@ -/* timer.c - * - * This file implements a benchmark timer using the General Purpose Timer. - * - * Notes: - * - * BSP_TIMER_AVG_OVERHEAD and BSP_TIMER_LEAST_VALID are required to be - * provided in bsp.h - * - * COPYRIGHT (c) 1989-2009. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <assert.h> - -#include <bsp.h> -#include <rtems/btimer.h> - -uint64_t Timer_driver_Start_time; - -bool benchmark_timer_find_average_overhead; - -/* - * benchmark_timer_initialize - */ - -void benchmark_timer_initialize() -{ - - /* - * Timer runs long and accurate enough not to require an interrupt. - */ - - Timer_driver_Start_time = PPC_Get_timebase_register(); -} - -/* - * benchmark_timer_read - */ - -benchmark_timer_t benchmark_timer_read() -{ - uint64_t clicks; - uint64_t total64; - uint32_t total; - - /* approximately CLOCK_SPEED clicks per microsecond */ - - clicks = PPC_Get_timebase_register(); - - assert( clicks > Timer_driver_Start_time ); - - total64 = clicks - Timer_driver_Start_time; - - assert( total64 <= 0xffffffff ); /* fits into a uint32_t */ - - total = (uint32_t) total64; - - if ( benchmark_timer_find_average_overhead == true ) - return total; /* in "clicks" of the decrementer units */ - - if ( total < BSP_TIMER_LEAST_VALID ) - return 0; /* below timer resolution */ - - return BSP_Convert_decrementer(total - BSP_TIMER_AVG_OVERHEAD); -} - -void benchmark_timer_disable_subtracting_average_overhead( - bool find_flag -) -{ - benchmark_timer_find_average_overhead = find_flag; -} |