diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/dmv177/timer/timer.c')
-rw-r--r-- | c/src/lib/libbsp/powerpc/dmv177/timer/timer.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/c/src/lib/libbsp/powerpc/dmv177/timer/timer.c b/c/src/lib/libbsp/powerpc/dmv177/timer/timer.c deleted file mode 100644 index 674e2cf5a8..0000000000 --- a/c/src/lib/libbsp/powerpc/dmv177/timer/timer.c +++ /dev/null @@ -1,132 +0,0 @@ -/* timer.c - * - * This file implements a benchmark timer using the General Purpose Timer on - * the MEC. - * - * The license and distribution terms for this file are in - * the file LICENSE in this distribution or at - * http://www.OARcorp.com/rtems/license.html. - * - * $Id$ - */ - -#include <assert.h> - -#include <bsp.h> - -rtems_unsigned64 Timer_driver_Start_time; - -rtems_boolean Timer_driver_Find_average_overhead; - -/*PAGE - * - * Timer_initialize - * - * This routine initializes the timer. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * Return values: NONE - * - */ - -void Timer_initialize() -{ - /* - * Timer runs long and accurate enough not to require an interrupt. - */ - - - Timer_driver_Start_time = PPC_Get_timebase_register(); - - -} - -#define AVG_OVERHEAD 24 /* It typically takes 24 instructions */ - /* to start/stop the timer. */ -#define LEAST_VALID 1 /* Don't trust a value lower than this */ - -/* PAGE - * - * Read_timer - * - * This routine reads the timer. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * Return values: timer in ms units - * - */ - -int Read_timer() -{ - rtems_unsigned64 clicks; - rtems_unsigned64 total64; - rtems_unsigned32 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 unsigned32 */ - - total = (rtems_unsigned32) total64; - - if ( Timer_driver_Find_average_overhead == 1 ) - return total; /* in one microsecond units */ - - if ( total < LEAST_VALID ) - return 0; /* below timer resolution */ - - return total - AVG_OVERHEAD; -} - -/* PAGE - * - * Empty_function - * - * This routine is called during the idle loop. - * - * Input parameters: NONE - * - * Output parameters: - * status code of successful - * - * Return values: NONE - * - */ - -rtems_status_code Empty_function( void ) -{ - return RTEMS_SUCCESSFUL; -} - -/* PAGE - * - * Set_find_average_overhead - * - * This routine sets a global boolean to the value passed in. - * - * Input parameters: - * find_flag - flag to indicate to find the average overhead. - * - * Output parameters: NONE - * - * Return values: NONE - * - */ - -void Set_find_average_overhead( - rtems_boolean find_flag -) -{ - Timer_driver_Find_average_overhead = find_flag; -} |