diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/mvme162/timer')
| -rw-r--r-- | c/src/lib/libbsp/m68k/mvme162/timer/timer.c | 91 | ||||
| -rw-r--r-- | c/src/lib/libbsp/m68k/mvme162/timer/timerisr.s | 46 |
2 files changed, 0 insertions, 137 deletions
diff --git a/c/src/lib/libbsp/m68k/mvme162/timer/timer.c b/c/src/lib/libbsp/m68k/mvme162/timer/timer.c deleted file mode 100644 index c000fadd28..0000000000 --- a/c/src/lib/libbsp/m68k/mvme162/timer/timer.c +++ /dev/null @@ -1,91 +0,0 @@ -/* Timer_init() - * - * This routine initializes the Tick Timer 1 on the MVME162 board. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * NOTE: This routine will not work if the optimizer is enabled - * for some compilers. The multiple writes - * may be optimized away. - * - * It is important that the timer start/stop overhead be - * determined when porting or modifying this code. - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * Modifications of respective RTEMS file: COPYRIGHT (c) 1994. - * EISCAT Scientific Association. M.Savitski - * - * This material is a part of the MVME162 Board Support Package - * for the RTEMS executive. Its licensing policies are those of the - * RTEMS above. - * - * $Id$ - */ - - -#include <rtems.h> -#include <bsp.h> - -/* Periodic tick interval */ -#define TICK_INTERVAL 0x10000 -#define TIMER_INT_LEVEL 6 - -int Ttimer_val; -rtems_boolean Timer_driver_Find_average_overhead; - -rtems_isr timerisr(); - -void Timer_initialize() -{ - (void) set_vector( timerisr, (VECTOR_BASE >> 28) * 0x10 + 0x8, 0 ); - - Ttimer_val = 0; /* clear timer ISR count */ - lcsr->vector_base = 0x67800000; /* set vb, enable interrupts */ - lcsr->to_ctl = 0xE7; /* prescaler to 1 MHz (see Appendix A1) */ - lcsr->timer_cmp_1 = TICK_INTERVAL; - lcsr->timer_cnt_1 = 0; /* clear counter */ - lcsr->board_ctl |= 7; /* increment, reset-on-compare, clear-ovfl-cnt */ - - lcsr->intr_level[0] |= TIMER_INT_LEVEL; /* set int level */ - lcsr->intr_ena |= 0x01000000; /* enable tick timer 1 interrupt */ -} - -#define AVG_OVERHEAD 6 /* It typically takes 3.0 microseconds */ - /* (6 countdowns) to start/stop the timer. */ -#define LEAST_VALID 10 /* Don't trust a value lower than this */ - -int Read_timer() -{ - unsigned long total; - - total = (Ttimer_val * TICK_INTERVAL) + lcsr->timer_cnt_1; - - if ( Timer_driver_Find_average_overhead == 1 ) - return total; /* in one-half microsecond units */ - - if ( total < LEAST_VALID ) - return 0; /* below timer resolution */ - - return (total-AVG_OVERHEAD); /* in musec units */ -} - -rtems_status_code Empty_function( void ) -{ - return RTEMS_SUCCESSFUL; -} - -void Set_find_average_overhead( - rtems_boolean find_flag -) -{ - Timer_driver_Find_average_overhead = find_flag; -} diff --git a/c/src/lib/libbsp/m68k/mvme162/timer/timerisr.s b/c/src/lib/libbsp/m68k/mvme162/timer/timerisr.s deleted file mode 100644 index af31e4276b..0000000000 --- a/c/src/lib/libbsp/m68k/mvme162/timer/timerisr.s +++ /dev/null @@ -1,46 +0,0 @@ -/* timer_isr() - * - * This routine provides the ISR for the Z8036 timer on the MVME136 - * board. The timer is set up to generate an interrupt at maximum - * intervals. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * Modifications of respective RTEMS file: COPYRIGHT (c) 1994. - * EISCAT Scientific Association. M.Savitski - * - * This material is a part of the MVME162 Board Support Package - * for the RTEMS executive. Its licensing policies are those of the - * RTEMS above. - * - * $Id$ - */ - -#include "asm.h" - -BEGIN_CODE - -.set INTR_CLEAR_REG, 0xfff40074 | interrupt clear register -.set RELOAD, 0x01000000 | clear tick 1 interrupt - - PUBLIC (timerisr) -SYM (timerisr): - move.l a0, -(a7) | save a0 - movea.l #INTR_CLEAR_REG, a0 | a0 = addr of cmd status reg - ori.l #RELOAD, (a0) | reload countdown - addq.l #1, SYM (Ttimer_val) | increment timer value - move.l (a7)+, a0 | restore a0 - rte - -END_CODE -END |