4.104.114.95
Last change
on this file since 424ee2ba was
424ee2ba,
checked in by Joel Sherrill <joel.sherrill@…>, on 08/31/08 at 16:47:17
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2008-08-31 Joel Sherrill <joel.sherrill@…>
- timer/timer.c: Rename timer driver methods to follow RTEMS
programming conventions.
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-
Property mode set to
100644
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File size:
1.2 KB
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Line | |
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1 | /* |
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2 | * Timer Init |
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3 | * |
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4 | * Use the last DMA timer (DTIM3) as the diagnostic timer. |
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5 | * |
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6 | * Author: W. Eric Norum <norume@aps.anl.gov> |
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7 | * |
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8 | * COPYRIGHT (c) 2005. |
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9 | * On-Line Applications Research Corporation (OAR). |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.rtems.com/license/LICENSE. |
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14 | */ |
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15 | |
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16 | #include <rtems.h> |
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17 | #include <bsp.h> |
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18 | |
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19 | void |
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20 | benchmark_timerinitialize(void) |
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21 | { |
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22 | int preScaleDivisor = bsp_get_CPU_clock_speed() / 1000000; |
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23 | int div = MCF5282_TIMER_DTMR_CLK_DIV1; |
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24 | |
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25 | if (preScaleDivisor > 256) { |
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26 | preScaleDivisor /= 16; |
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27 | div = MCF5282_TIMER_DTMR_CLK_DIV16; |
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28 | } |
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29 | MCF5282_TIMER3_DTMR = 0; |
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30 | MCF5282_TIMER3_DTMR = MCF5282_TIMER_DTMR_PS(preScaleDivisor - 1) | div | |
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31 | MCF5282_TIMER_DTMR_RST; |
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32 | } |
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33 | |
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34 | /* |
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35 | * Return timer value in microsecond units |
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36 | */ |
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37 | int |
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38 | benchmark_timerread(void) |
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39 | { |
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40 | return MCF5282_TIMER3_DTCN; |
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41 | } |
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42 | |
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43 | /* |
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44 | * Empty function call used in loops to measure basic cost of looping |
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45 | * in Timing Test Suite. |
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46 | */ |
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47 | rtems_status_code |
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48 | benchmark_timerempty_function(void) |
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49 | { |
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50 | return RTEMS_SUCCESSFUL; |
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51 | } |
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52 | |
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53 | void |
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54 | benchmark_timerdisable_subtracting_average_overhead(rtems_boolean find_flag) |
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55 | { |
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56 | } |
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