[353] | 1 | /*
|
---|
| 2 | * TOPPERS/SSP Kernel
|
---|
| 3 | * Smallest Set Profile Kernel
|
---|
| 4 | *
|
---|
| 5 | * Copyright (C) 2013-2015 by Embedded and Real-Time Systems Laboratory
|
---|
| 6 | * Graduate School of Information Science, Nagoya Univ., JAPAN
|
---|
| 7 | * Copyright (C) 2018 by Naoki Saito
|
---|
| 8 | * Nagoya Municipal Industrial Research Institute, JAPAN
|
---|
| 9 | *
|
---|
| 10 | * ä¸è¨èä½æ¨©è
|
---|
| 11 | ã¯ï¼ä»¥ä¸ã®(1)ã(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
|
---|
| 12 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
|
---|
| 13 | * å¤ã»åé
|
---|
| 14 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
|
---|
| 15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
|
---|
| 16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
|
---|
| 17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
|
---|
| 18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
|
---|
| 19 | * ç¨ã§ããå½¢ã§åé
|
---|
| 20 | å¸ããå ´åã«ã¯ï¼åé
|
---|
| 21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
|
---|
| 22 | * è
|
---|
| 23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
|
---|
| 24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
|
---|
| 25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
|
---|
| 26 | * ç¨ã§ããªãå½¢ã§åé
|
---|
| 27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
|
---|
| 28 | * ã¨ï¼
|
---|
| 29 | * (a) åé
|
---|
| 30 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
|
---|
| 31 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
|
---|
| 32 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
|
---|
| 33 | * (b) åé
|
---|
| 34 | å¸ã®å½¢æ
|
---|
| 35 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
|
---|
| 36 | * å ±åãããã¨ï¼
|
---|
| 37 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
|
---|
| 38 | * 害ãããï¼ä¸è¨èä½æ¨©è
|
---|
| 39 | ããã³TOPPERSããã¸ã§ã¯ããå
|
---|
| 40 | 責ãããã¨ï¼
|
---|
| 41 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
|
---|
| 42 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
|
---|
| 43 | ããã³TOPPERSããã¸ã§ã¯ãã
|
---|
| 44 | * å
|
---|
| 45 | 責ãããã¨ï¼
|
---|
| 46 | *
|
---|
| 47 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
|
---|
| 48 | ã
|
---|
| 49 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
|
---|
| 50 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
|
---|
| 51 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
|
---|
| 52 | * ã®è²¬ä»»ãè² ããªãï¼
|
---|
| 53 | *
|
---|
| 54 | * $Id$
|
---|
| 55 | */
|
---|
| 56 |
|
---|
| 57 | /*
|
---|
| 58 | * ã¿ã¤ããã©ã¤ãï¼Generic Timerï¼
|
---|
| 59 | */
|
---|
| 60 |
|
---|
| 61 | #ifndef TOPPERS_PRC_TIMER_H
|
---|
| 62 | #define TOPPERS_PRC_TIMER_H
|
---|
| 63 |
|
---|
| 64 | /*
|
---|
| 65 | * ã¿ã¤ãå²è¾¼ã¿ãã³ãã©ç»é²ã®ããã®å®æ°
|
---|
| 66 | */
|
---|
| 67 | #define INTNO_TIMER TINTNO_TIMER /* å²è¾¼ã¿çªå· */
|
---|
| 68 | #define INHNO_TIMER INTNO_TIMER /* å²è¾¼ã¿ãã³ãã©çªå· */
|
---|
| 69 |
|
---|
| 70 | #define CNTV_CTL_ENABLE (1 << 0)
|
---|
| 71 | #define CNTV_CTL_MASK (1 << 1)
|
---|
| 72 | #define CNTV_CTL_START (1 << 2)
|
---|
| 73 |
|
---|
| 74 | #ifndef TOPPERS_MACRO_ONLY
|
---|
| 75 |
|
---|
| 76 | /*
|
---|
| 77 | * ã¿ã¤ãå¤ã®å
|
---|
| 78 | é¨è¡¨ç¾ã®å
|
---|
| 79 | */
|
---|
| 80 | typedef uint64_t CLOCK;
|
---|
| 81 |
|
---|
| 82 | /*
|
---|
| 83 | * ã¿ã¤ãå¤ã®å
|
---|
| 84 | é¨è¡¨ç¾ã¨ããªç§ã»Î¼ç§åä½ã¨ã®å¤æ
|
---|
| 85 | *
|
---|
| 86 | */
|
---|
| 87 | #define TO_CLOCK(nume, deno) ((CLOCK)(TIMER_CLOCK * (nume) / (deno)))
|
---|
| 88 | #define TO_USEC(clock) (((SYSUTM) clock) * 1000U / TIMER_CLOCK)
|
---|
| 89 |
|
---|
| 90 | /*
|
---|
| 91 | * ã¿ã¤ãã®èµ·åå¦ç
|
---|
| 92 | *
|
---|
| 93 | * ã¿ã¤ããåæåãï¼å¨æçãªã¿ã¤ãå²è¾¼ã¿è¦æ±ãçºçãããï¼
|
---|
| 94 | */
|
---|
| 95 | extern void target_timer_initialize(intptr_t exinf);
|
---|
| 96 |
|
---|
| 97 | /*
|
---|
| 98 | * ã¿ã¤ãã®åæ¢å¦ç
|
---|
| 99 | *
|
---|
| 100 | * ã¿ã¤ãã®åä½ãåæ¢ãããï¼
|
---|
| 101 | */
|
---|
| 102 | extern void target_timer_terminate(intptr_t exinf);
|
---|
| 103 |
|
---|
| 104 | /*
|
---|
| 105 | * ã¿ã¤ãã®ç¾å¨å¤ã®èªåºã
|
---|
| 106 | */
|
---|
| 107 | Inline CLOCK
|
---|
| 108 | target_timer_get_current(void)
|
---|
| 109 | {
|
---|
| 110 | uint64_t cntv_tval;
|
---|
| 111 |
|
---|
| 112 | Asm ("isb; mrs %0, cntv_tval_el0; isb;" : "=r"(cntv_tval)
|
---|
| 113 | :: "memory");
|
---|
| 114 | return cntv_tval;
|
---|
| 115 | }
|
---|
| 116 |
|
---|
| 117 | /*
|
---|
| 118 | * ã¿ã¤ãå²è¾¼ã¿ãã³ãã©
|
---|
| 119 | */
|
---|
| 120 | extern void target_timer_handler(void);
|
---|
| 121 |
|
---|
| 122 | #endif /* TOPPERS_MACRO_ONLY */
|
---|
| 123 | #endif /* TOPPERS_PRC_TIMER_H */
|
---|