[26] | 1 | /*
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| 2 | * TOPPERS/JSP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Just Standard Profile Kernel
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| 5 | *
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| 6 | * Copyright (C) 2000-2004 by Embedded and Real-Time Systems Laboratory
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| 7 | * Toyohashi Univ. of Technology, JAPAN
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| 8 | * Copyright (C) 2001-2004 by Industrial Technology Institute,
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| 9 | * Miyagi Prefectural Government, JAPAN
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| 10 | *
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| 11 | * ä¸è¨èä½æ¨©è
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| 12 | ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 13 | * ã«ãã£ã¦å
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| 14 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 15 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 16 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 17 | å¸ï¼ä»¥ä¸ï¼
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| 18 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 19 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 20 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 21 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 22 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 23 | * ç¨ã§ããå½¢ã§åé
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| 24 | å¸ããå ´åã«ã¯ï¼åé
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| 25 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 26 | * è
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| 27 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 28 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 29 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 30 | * ç¨ã§ããªãå½¢ã§åé
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| 31 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 32 | * ã¨ï¼
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| 33 | * (a) åé
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| 34 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 35 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 36 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 37 | * (b) åé
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| 38 | å¸ã®å½¢æ
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| 39 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 40 | * å ±åãããã¨ï¼
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| 41 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 42 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 43 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 44 | 責ãããã¨ï¼
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| 45 | *
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| 46 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 47 | ã
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| 48 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 49 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 50 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 51 | *
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| 52 | * @(#) $Id: pit.h,v 1.2 2004/10/07 17:10:56 honda Exp $
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| 53 | */
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| 54 |
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| 55 | /*
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| 56 | * ã¿ã¤ããã©ã¤ã
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| 57 | *ãããããMPC860Tå
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| 58 | èµã®å¨æå²è¾¼ã¿ã¿ã¤ãPITã使ç¨
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| 59 | */
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| 60 |
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| 61 | #ifndef _PIT_H_
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| 62 | #define _PIT_H_
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| 63 |
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| 64 | #include <mpc860_sil.h>
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| 65 |
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| 66 | /*
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| 67 | * SIUã®å
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| 68 | é¨å²è¾¼ã¿ã¬ãã«ï¼ããããã¿ã¼ã³ï¼
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| 69 | */
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| 70 | #define SIU_INT_PIT LEVEL_TO_BIT_PATTERN(INTLVL_PIT)
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| 71 |
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| 72 |
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| 73 | /*
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| 74 | * ã¿ã¤ãå¤ã®å
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| 75 | é¨è¡¨ç¾ã®å
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| 76 | */
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| 77 | typedef UH CLOCK;
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| 78 |
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| 79 | /*
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| 80 | * ã¿ã¤ãã«ä¾çµ¦ãããã¯ããã¯å¨æ³¢æ°[kHz]
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| 81 | * TIMER_CLOCK=SYSTEM_CLOCK[MHz] / 4
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| 82 | */
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| 83 | #define TIMER_CLOCK (SYSTEM_CLOCK * 1000 / 4)
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| 84 |
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| 85 | /*
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| 86 | * ã¿ã¤ãå¤ã®å
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| 87 | é¨è¡¨ç¾ã¨ããªç§ã»Î¼ç§åä½ã¨ã®å¤æ
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| 88 | */
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| 89 | #define TO_CLOCK(nume, deno) (TIMER_CLOCK * (nume) / (deno))
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| 90 | #define TO_USEC(clock) ((clock) * 1000 / TIMER_CLOCK)
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| 91 | #define CLOCK_PER_TICK ((CLOCK) (TO_CLOCK(TIC_NUME, TIC_DENO) - 1))
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| 92 |
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| 93 | /*
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| 94 | * è¨å®ã§ããæ大ã®ã¿ã¤ãå¨æï¼åä½ã¯å
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| 95 | é¨è¡¨ç¾ï¼
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| 96 | */
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| 97 | #define MAX_CLOCK ((CLOCK) 0xffffu)
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| 98 |
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| 99 | /*
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| 100 | * ã¿ã¤ãã®ç¾å¨å¤ãå²è¾¼ã¿çºçåã®å¤ã¨ã¿ãªããã®å¤æ
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| 101 | */
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| 102 | #define GET_TOLERANCE 100 /* å¦çé
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| 103 | ãã®è¦ç©ãå¤ï¼åä½ã¯å
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| 104 | é¨è¡¨ç¾ï¼*/
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| 105 | #define BEFORE_IREQ(clock) \
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| 106 | ((clock) >= TO_CLOCK(TIC_NUME, TIC_DENO) - GET_TOLERANCE)
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| 107 |
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| 108 | /*
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| 109 | * ã³ã³ããã¼ã«ã¬ã¸ã¹ã¿ã®å®ç¾©
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| 110 | */
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| 111 |
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| 112 | /* å¨æå²è¾¼ã¿ã¹ãã¼ã¿ã¹ããã³å¶å¾¡ã¬ã¸ã¹ã¿ */
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| 113 | #define PISCR (VH *)(IMMR_BASE + 0x240)
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| 114 | #define PISCRK (VW *)(IMMR_BASE + 0x340) /* ãã¼ã¬ã¸ã¹ã¿ */
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| 115 | #define PISCR_PIRQ 0xff00 /* å¨æå²è¾¼ã¿è¦æ±ã¬ãã«ããã */
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| 116 | #define PISCR_PS BIT8_16 /* å¨æå²è¾¼ã¿ã¹ãã¼ã¿ã¹ */
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| 117 | #define PISCR_PIE BIT13_16 /* å¨æå²è¾¼ã¿ã¤ãã¼ãã« */
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| 118 | #define PISCR_PITF BIT14_16 /* PITããªã¼ãºã»ã¤ãã¼ãã« */
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| 119 | #define PISCR_PTE BIT15_16 /* å¨æã¿ã¤ãã»ã¤ãã¼ãã« */
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| 120 |
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| 121 | /* PITã«ã¦ã³ãã¬ã¸ã¹ã¿ï¼ä¸ä½2ãã¤ãã®ã¿ï¼ */
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| 122 | #define PITC (VH *)(IMMR_BASE + 0x244)
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| 123 | #define PITCK (VW *)(IMMR_BASE + 0x344) /* ãã¼ã¬ã¸ã¹ã¿ */
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| 124 |
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| 125 | /* PITã¬ã¸ã¹ã¿ï¼ä¸ä½2ãã¤ãã®ã¿ï¼ */
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| 126 | #define PITR (VH *)(IMMR_BASE + 0x248)
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| 127 |
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| 128 |
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| 129 |
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| 130 | #ifndef _MACRO_ONLY
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| 131 |
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| 132 | /*
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| 133 | * å
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| 134 | é¨ã¬ã¸ã¹ã¿ä¿è·ã®ããã¯ã¨ã¢ã³ããã¯
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| 135 | */
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| 136 |
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| 137 | /* PISCRãã㯠*/
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| 138 | Inline void
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| 139 | lock_piscr()
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| 140 | {
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| 141 | /* å¤ã¯UNLOCK_KEY以å¤ã§ããã°è¯ã */
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| 142 | mpc860_wrw_mem(PISCRK, 0);
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| 143 | }
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| 144 |
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| 145 | /* PISCRã¢ã³ãã㯠*/
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| 146 | Inline void
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| 147 | unlock_piscr()
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| 148 | {
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| 149 | mpc860_wrw_mem(PISCRK, UNLOCK_KEY);
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| 150 | }
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| 151 |
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| 152 | /* PITCãã㯠*/
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| 153 | Inline void
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| 154 | lock_pitc()
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| 155 | {
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| 156 | /* å¤ã¯UNLOCK_KEY以å¤ã§ããã°è¯ã */
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| 157 | mpc860_wrw_mem(PITCK, 0);
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| 158 | }
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| 159 |
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| 160 | /* PITCã¢ã³ãã㯠*/
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| 161 | Inline void
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| 162 | unlock_pitc()
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| 163 | {
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| 164 | mpc860_wrw_mem(PITCK, UNLOCK_KEY);
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| 165 | }
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| 166 |
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| 167 | /*
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| 168 | * ã¿ã¤ãã¹ã¿ã¼ã
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| 169 | */
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| 170 | Inline void
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| 171 | pit_start()
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| 172 | {
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| 173 | unlock_piscr(); /* PISCRã¢ã³ãã㯠*/
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| 174 | mpc860_orh_mem(PISCR, PISCR_PTE);
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| 175 | lock_piscr(); /* PISCRãã㯠*/
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| 176 | }
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| 177 |
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| 178 | /*
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| 179 | * ã¿ã¤ãä¸æåæ¢
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| 180 | */
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| 181 | Inline void
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| 182 | pit_stop()
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| 183 | {
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| 184 | unlock_piscr(); /* PISCRã¢ã³ãã㯠*/
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| 185 | mpc860_andh_mem(PISCR, ~PISCR_PTE);
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| 186 | lock_piscr(); /* PISCRãã㯠*/
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| 187 | }
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| 188 |
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| 189 | /*
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| 190 | * ã¿ã¤ãå²è¾¼ã¿è¦æ±ã®ã¯ãªã¢
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| 191 | * PISCRã¬ã¸ã¹ã¿ã®PSãããã«1ãæ¸ãè¾¼ã
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| 192 | */
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| 193 | Inline void
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| 194 | pit_int_clear()
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| 195 | {
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| 196 | /*
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| 197 | * SILã使ç¨ããã¨ãã®ãã°æ©è½ããªãã«
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| 198 | */
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| 199 | #ifdef SIL_DEBUG
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| 200 | BOOL sil_debug_tmp = sil_debug_on;
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| 201 | sil_debug_on = FALSE;
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| 202 | #endif /* SIL_DEBUG */
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| 203 |
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| 204 | unlock_piscr(); /* PISCRã¢ã³ãã㯠*/
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| 205 | mpc860_orh_mem(PISCR, PISCR_PS);
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| 206 | lock_piscr(); /* PISCRãã㯠*/
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| 207 |
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| 208 | /*
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| 209 | * SILã使ç¨ããã¨ãã®ãã°æ©è½ã復å
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| 210 |
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| 211 | */
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| 212 | #ifdef SIL_DEBUG
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| 213 | sil_debug_on = sil_debug_tmp;
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| 214 | #endif /* SIL_DEBUG */
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| 215 |
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| 216 | }
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| 217 |
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| 218 |
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| 219 | /*
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| 220 | * ã¿ã¤ãã®èµ·åå¦ç
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| 221 | *
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| 222 | * ã¿ã¤ããåæåãï¼å¨æçãªã¿ã¤ãå²è¾¼ã¿è¦æ±ãçºçãããï¼
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| 223 | */
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| 224 | Inline void
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| 225 | pit_initialize()
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| 226 | {
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| 227 | VH piscr;
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| 228 | VW sccr;
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| 229 |
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| 230 | /* ã¿ã¤ãä¸éå¤=å¤æ°ã®æ大å¤ãªã®ã§ãã§ãã¯ã¯çç¥ */
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| 231 |
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| 232 | pit_stop(); /* ã¿ã¤ãåæ¢ */
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| 233 |
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| 234 | /*
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| 235 | * ã¿ã¤ãé¢é£ã®è¨å®
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| 236 | */
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| 237 |
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| 238 | /* ã¯ããã¯ã½ã¼ã¹é¸æãåå¨æ¯è¨å® */
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| 239 | unlock_sccr(); /* SCCRã¢ã³ãã㯠*/
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| 240 | sccr = mpc860_rew_mem(SCCR);
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| 241 | sccr = (sccr & ~SCCR_RTDIV) /* ãªã¢ã«ã¿ã¤ã ã¯ããã¯åå¨:4 */
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| 242 | | SCCR_RTSEL; /* ã¯ããã¯ã½ã¼ã¹ï¼EXTCLK */
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| 243 | mpc860_wrw_mem(SCCR, sccr);
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| 244 | lock_sccr(); /* SCCRãã㯠*/
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| 245 |
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| 246 |
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| 247 | /* ã«ã¦ã³ã¿ç®æ¨å¤è¨å® */
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| 248 | unlock_pitc(); /* PITCã¢ã³ãã㯠*/
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| 249 | mpc860_wrh_mem(PITC, CLOCK_PER_TICK);
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| 250 | lock_pitc(); /* PITCãã㯠*/
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| 251 |
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| 252 |
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| 253 | unlock_piscr(); /* PISCRã¢ã³ãã㯠*/
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| 254 | piscr = mpc860_reh_mem(PISCR);
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| 255 | piscr = (piscr & ~PISCR_PIRQ)
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| 256 | | (SIU_INT_PIT << 8) /* å²è¾¼ã¿ã¬ãã«è¨å® */
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| 257 | | PISCR_PIE; /* PITå²è¾¼ã¿è¨±å¯ */
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| 258 | mpc860_wrh_mem(PISCR, piscr);
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| 259 | lock_piscr(); /* PISCRãã㯠*/
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| 260 | }
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| 261 |
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| 262 | /*
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| 263 | * ã¿ã¤ãã®åæ¢å¦ç
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| 264 | *
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| 265 | * ãã¿ã¤ãã®åä½ãåæ¢ãããï¼
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| 266 | */
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| 267 | Inline void
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| 268 | pit_terminate()
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| 269 | {
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| 270 | pit_stop(); /* ã¿ã¤ããåæ¢ */
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| 271 | pit_int_clear(); /* å²ãè¾¼ã¿è¦æ±ãã¯ãªã¢ */
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| 272 |
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| 273 | unlock_piscr(); /* PISCRã¢ã³ãã㯠*/
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| 274 | mpc860_andh_mem(PISCR, ~PISCR_PIE); /* ã¿ã¤ãå²è¾¼ã¿ãç¦æ¢ */
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| 275 | lock_piscr(); /* PISCRãã㯠*/
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| 276 |
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| 277 | /* æ¬å½ã¯ã¿ã¤ãã¸ã®ã¯ããã¯ä¾çµ¦ãåæ¢ãã */
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| 278 | }
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| 279 |
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| 280 | /*
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| 281 | * ã¿ã¤ãã®ç¾å¨å¤ã®èªåºã
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| 282 | *ãããå²è¾¼ã¿ç¦æ¢åºéä¸ã§å¼ã³åºããã¨
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| 283 | */
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| 284 | Inline CLOCK
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| 285 | pit_get_current()
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| 286 | {
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| 287 | CLOCK pitr;
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| 288 |
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| 289 | pitr = mpc860_reh_mem(PITR);
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| 290 | return(CLOCK_PER_TICK - pitr);
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| 291 | }
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| 292 |
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| 293 | /*
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| 294 | * ã¿ã¤ãå²è¾¼ã¿è¦æ±ã®ãã§ãã¯
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| 295 | */
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| 296 | Inline BOOL
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| 297 | pit_fetch_interrupt()
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| 298 | {
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| 299 | VH piscr;
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| 300 |
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| 301 | /* èªã¿åºããªã®ã§ãã¢ã³ããã¯ããªãã¦è¯ã */
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| 302 | piscr = mpc860_reh_mem(PISCR);
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| 303 | return(piscr & PISCR_PS);
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| 304 | }
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| 305 |
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| 306 | #endif /* _MACRO_ONLY */
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| 307 | #endif /* _PIT_H_ */
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| 308 | /* end of file */
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