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-rw-r--r--c/src/lib/libcpu/mips/timer/timer.c113
1 files changed, 0 insertions, 113 deletions
diff --git a/c/src/lib/libcpu/mips/timer/timer.c b/c/src/lib/libcpu/mips/timer/timer.c
deleted file mode 100644
index da5291a48a..0000000000
--- a/c/src/lib/libcpu/mips/timer/timer.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/**
- * @file
- * @brief IDT 4650 Timer Driver.
- *
- * This file manages the benchmark timer used by the RTEMS Timing Test
- * Suite.
- */
-
-/*
- * Author: Craig Lebakken <craigl@transition.com>
- *
- * COPYRIGHT (c) 1996 by Transition Networks Inc.
- *
- * To anyone who acknowledges that this file is provided "AS IS"
- * without any express or implied warranty:
- * permission to use, copy, modify, and distribute this file
- * for any purpose is hereby granted without fee, provided that
- * the above copyright notice and this notice appears in all
- * copies, and that the name of Transition Networks not be used in
- * advertising or publicity pertaining to distribution of the
- * software without specific, written prior permission.
- * Transition Networks makes no representations about the suitability
- * of this software for any purpose.
- *
- * derived from src/lib/libbsp/no_cpu/no_bsp/timer/timer.c
- *
- * 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.org/license/LICENSE.
- */
-
-#include <rtems.h>
-#include <rtems/btimer.h>
-
-#define CLOCKS_PER_MICROSECOND ( CPU_CLOCK_RATE_MHZ )
-#define TIMER_MAX_VALUE 0xffffffff
-
-extern uint32_t mips_read_timer( void );
-
-static bool benchmark_timer_find_average_overhead;
-static uint32_t benchmark_timer_initial_value = 0;
-
-void benchmark_timer_initialize( void )
-{
- benchmark_timer_initial_value = mips_read_timer();
- /*
- * Somehow start the timer
- */
-
- /* Timer on 4650 is always running */
-}
-
-/*
- * The following controls the behavior of benchmark_timer_read().
- *
- * 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 8 /* It typically takes X.X microseconds */
- /* (Y countdowns) to start/stop the timer. */
- /* This value is in cycles. */
-#define LEAST_VALID 1 /* Don't trust a clicks value lower than this */
-
-benchmark_timer_t benchmark_timer_read( void )
-{
- uint64_t clicks;
- uint32_t total;
-
- /*
- * Read the timer and see how many clicks it has been since we started.
- */
-
- clicks = mips_read_timer(); /* XXX: read some HW here */
- if (clicks < benchmark_timer_initial_value)
- {
- clicks += TIMER_MAX_VALUE;
- }
- clicks -= benchmark_timer_initial_value;
-
- /*
- * Total is calculated by taking into account the number of timer overflow
- * interrupts since the timer was initialized and clicks since the last
- * interrupts.
- */
-#if 0 /* leave total in number of cycles */
- total = clicks / CLOCKS_PER_MICROSECOND;
-#else
- total = clicks;
-#endif
-
- if ( benchmark_timer_find_average_overhead == 1 )
- return total; /* in # cycles units */
- else {
- if ( total < LEAST_VALID )
- return 0; /* below timer resolution */
- /*
- * leave total in cycles
- */
- return (total - AVG_OVERHEAD);
- }
-}
-
-void benchmark_timer_disable_subtracting_average_overhead(bool find_flag)
-{
- benchmark_timer_find_average_overhead = find_flag;
-}