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-rw-r--r--c/src/lib/libbsp/nios2/nios2_iss/timer/timer.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/c/src/lib/libbsp/nios2/nios2_iss/timer/timer.c b/c/src/lib/libbsp/nios2/nios2_iss/timer/timer.c
deleted file mode 100644
index 18ddb2bf4f..0000000000
--- a/c/src/lib/libbsp/nios2/nios2_iss/timer/timer.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/* timer.c
- *
- * This file manages the benchmark timer used by the RTEMS Timing Test
- * Suite. Each measured time period is demarcated by calls to
- * Timer_initialize() and Read_timer(). Read_timer() usually returns
- * the number of microseconds since Timer_initialize() exitted.
- *
- * NOTE: It is important that the timer start/stop overhead be
- * determined when porting or modifying this code.
- *
- * COPYRIGHT (c) 2005-2006 Kolja Waschk rtemsdev/ixo.de
- * Derived from no_cpu/no_bsp/timer/timer.c 1.9,
- * COPYRIGHT (c) 1989-1999.
- * 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.com/license/LICENSE.
- *
- * $Id$
- */
-
-#define TIMER_WRAPS_AFTER_1MS 0
-
-#include <rtems.h>
-#include <rtems/score/cpu.h>
-#include <bsp.h>
-
-volatile uint32_t Timer_interrupts;
-rtems_boolean Timer_driver_Find_average_overhead;
-
-#define TIMER_REGS ((altera_avalon_timer_regs*)NIOS2_IO_BASE(TIMER_BASE))
-
-void timerisr( void )
-{
- TIMER_REGS->status = 0;
- Timer_interrupts++;
-}
-
-void Timer_initialize( void )
-{
- uint32_t old_ie;
-
- /* Disable timer interrupt, stop timer */
-
- TIMER_REGS->control = ALTERA_AVALON_TIMER_CONTROL_STOP_MSK;
-
- set_vector((nios2_isr_entry *)timerisr, TIMER_VECTOR, 1);
-
- /* Enable interrupt processing */
-
- NIOS2_IENABLE(1 << TIMER_VECTOR);
-
-#if TIMER_WRAPS_AFTER_1MS
- /* Writing to periodl/h resets the counter and eventually
- stops it. If the timer hasn't been configured with fixed
- period, set it to 1 ms now */
-
- TIMER_REGS->period_hi = (TIMER_FREQ/1000)>>16;
- TIMER_REGS->period_lo = (TIMER_FREQ/1000)&0xFFFF;
-#else
- /* Writing to periodl/h resets the counter and eventually
- stops it. Set max period */
-
- TIMER_REGS->period_hi = 0xFFFF;
- TIMER_REGS->period_lo = 0xFFFF;
-#endif
-
- /* For timers that can be stopped, writing to periodl/h
- also stopped the timer and we have to manually start it. */
-
- TIMER_REGS->control = ALTERA_AVALON_TIMER_CONTROL_ITO_MSK |
- ALTERA_AVALON_TIMER_CONTROL_CONT_MSK |
- ALTERA_AVALON_TIMER_CONTROL_START_MSK;
-
- /* This is the most safe place for resetting the overflow
- counter - just _after_ we reset the timer. Depending
- on the SOPC configuration, the counter may not be
- stoppable and it doesn't make sense to assume that
- there is any "safe" period before resetting. */
-
- Timer_interrupts = 0;
-}
-
-/*
- * The following controls the behavior of Read_timer().
- *
- * AVG_OVEREHAD is the overhead for starting and stopping the timer. It
- * is usually deducted from the number returned.
- *
- * LEAST_VALID is the lowest number this routine should trust. Numbers
- * below this are "noise" and zero is returned.
- */
-
-#define AVG_OVERHEAD 2 /* It typically takes 2 microseconds */
- /* to start/stop the timer. */
-
-#define LEAST_VALID AVG_OVERHEAD /* Don't trust a value lower than this */
-
-int Read_timer( void )
-{
- uint32_t timer_wraps;
- uint32_t timer_snap;
- uint32_t timer_ticks;
- uint32_t total;
- uint32_t old_ie;
-
- /* Hold timer */
- TIMER_REGS->control = ALTERA_AVALON_TIMER_CONTROL_STOP_MSK;
-
- /* Write to request snapshot of timer value */
- TIMER_REGS->snap_lo = 0;
- /* Get snapshot */
- timer_snap = ((TIMER_REGS->snap_hi)<<16) | TIMER_REGS->snap_lo;
- timer_wraps = Timer_interrupts;
-
- /* Restart timer */
- TIMER_REGS->control = ALTERA_AVALON_TIMER_CONTROL_START_MSK;
-
-#if TIMER_WRAPS_AFTER_1MS
- timer_ticks = (TIMER_FREQ / 1000) - 1 - timer_snap;
- total = timer_wraps * 1000;
-#else
- timer_ticks = 0xFFFFFFFF - timer_snap;
- total = timer_wraps * 0x80000000 / (TIMER_FREQ / 2000000L);
-#endif
- total += timer_ticks / (TIMER_FREQ / 1000000L);
-
- if(total < LEAST_VALID) return 0;
-
- if(Timer_driver_Find_average_overhead != TRUE) total-= AVG_OVERHEAD;
-
- return total;
-}
-
-/*
- * Empty function call used in loops to measure basic cost of looping
- * in Timing Test Suite.
- */
-
-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;
-}