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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 40 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 120 | giacomo | 22 | /* Added Advanced Timer Code |
| 23 | * |
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| 24 | * Date: 8.4.2003 |
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| 25 | * Author: Giacomo Guidi <giacomo@gandalf.sssup.it> |
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| 26 | * |
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| 27 | */ |
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| 28 | |||
| 40 | pj | 29 | /* Time Event routines (one shot mode) */ |
| 30 | |||
| 1621 | fabio | 31 | #include <arch/i386/stdlib.h> |
| 32 | #include <arch/i386/limits.h> |
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| 40 | pj | 33 | #include <ll/i386/mem.h> |
| 34 | #include <ll/i386/pit.h> |
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| 299 | giacomo | 35 | #include <ll/i386/apic.h> |
| 131 | giacomo | 36 | #include <ll/i386/advtimer.h> |
| 304 | giacomo | 37 | #include <ll/i386/error.h> |
| 305 | giacomo | 38 | #include <ll/i386/64bit.h> |
| 131 | giacomo | 39 | |
| 40 | pj | 40 | #include <ll/sys/ll/ll-data.h> |
| 304 | giacomo | 41 | #include <ll/sys/ll/ll-func.h> |
| 40 | pj | 42 | #include <ll/sys/ll/time.h> |
| 43 | #include <ll/sys/ll/event.h> |
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| 44 | |||
| 353 | giacomo | 45 | #include <tracer.h> |
| 46 | extern unsigned short int currCtx; |
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| 47 | |||
| 40 | pj | 48 | FILE(EventOneShot); |
| 49 | |||
| 50 | extern int activeInt; |
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| 51 | int activeEvent; |
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| 52 | |||
| 53 | extern BYTE frc; |
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| 54 | |||
| 55 | extern struct event eventlist[MAX_EVENT]; |
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| 56 | extern WORD lastTime; |
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| 57 | extern struct pitspec globalCounter; |
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| 58 | |||
| 59 | extern struct event *freeevents; |
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| 60 | extern struct event *firstevent; |
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| 61 | |||
| 62 | extern void (*evt_prol) (void); |
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| 63 | extern void (*evt_epil) (void); |
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| 64 | |||
| 305 | giacomo | 65 | extern unsigned int apic_clk_per_msec; |
| 619 | mauro | 66 | extern unsigned char use_tsc, use_apic; |
| 120 | giacomo | 67 | |
| 40 | pj | 68 | /* Switched to timespec */ |
| 619 | mauro | 69 | int oneshot_event_post(struct timespec time, void (*handler) (void *p), void *par) |
| 40 | pj | 70 | { |
| 619 | mauro | 71 | struct event *p; |
| 72 | struct event *p1, *t; |
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| 73 | struct timespec now, tmp; |
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| 74 | int done; |
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| 75 | DWORD tnext; |
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| 40 | pj | 76 | |
| 619 | mauro | 77 | TRACER_LOGEVENT(FTrace_EVT_timer_post, 0, 0); |
| 353 | giacomo | 78 | |
| 619 | mauro | 79 | if (!freeevents) { |
| 80 | message("NO FREE EVENTS !\n"); |
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| 81 | ll_abort(20); |
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| 82 | return -1; |
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| 83 | } |
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| 84 | /* Extract from the ``free events'' queue */ |
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| 85 | p = freeevents; |
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| 86 | freeevents = p->next; |
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| 40 | pj | 87 | |
| 619 | mauro | 88 | /* Fill the event fields */ |
| 89 | p->handler = handler; |
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| 90 | TIMESPEC_ASSIGN(&(p->time), &time); |
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| 91 | p->par = par; |
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| 40 | pj | 92 | |
| 619 | mauro | 93 | /* ...And insert it in the event queue!!! */ |
| 40 | pj | 94 | |
| 619 | mauro | 95 | t = NULL; |
| 96 | done = 0; |
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| 97 | /* walk through list, finding spot, adjusting ticks parameter */ |
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| 98 | for (p1 = firstevent; p1; p1 = t->next) { |
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| 99 | if (TIMESPEC_A_GT_B((&time), (&p1->time))) { |
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| 100 | t = p1; |
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| 101 | } else |
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| 102 | break; |
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| 103 | } |
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| 40 | pj | 104 | |
| 619 | mauro | 105 | /* adjust next entry */ |
| 106 | if (t) { |
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| 107 | t->next = p; |
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| 108 | } else { |
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| 109 | firstevent = p; |
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| 110 | if (!activeEvent) { |
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| 111 | if (!use_tsc) { |
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| 112 | ll_gettime(TIME_NEW, &now); |
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| 113 | } else { |
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| 114 | ll_read_timespec(&now); |
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| 115 | } |
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| 116 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
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| 117 | NULL_TIMESPEC(&tmp); |
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| 118 | } else { |
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| 119 | SUBTIMESPEC(&(firstevent->time), &now, &tmp); |
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| 120 | } |
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| 121 | tnext = TIMESPEC2USEC(&tmp); |
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| 122 | if (!use_apic) { |
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| 123 | mul32div32to32(tnext,1193182,1000000,tnext); |
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| 124 | pit_setconstant(0, tnext); |
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| 125 | } else { |
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| 126 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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| 127 | set_APIC_timer(tnext); |
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| 128 | } |
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| 129 | } |
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| 40 | pj | 130 | } |
| 619 | mauro | 131 | p->next = p1; |
| 40 | pj | 132 | |
| 619 | mauro | 133 | return p->index; |
| 40 | pj | 134 | } |
| 135 | |||
| 136 | void oneshot_wake_up(void) |
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| 619 | mauro | 137 | { |
| 138 | /* CHANGE the NAME, please... */ |
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| 139 | struct event *p = NULL, *pp; |
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| 140 | struct timespec now, ttmp; |
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| 141 | WORD tmp; |
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| 142 | DWORD tnext; |
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| 999 | trimarchi | 143 | DWORD max_tnext; |
| 40 | pj | 144 | |
| 999 | trimarchi | 145 | |
| 146 | |||
| 147 | |||
| 619 | mauro | 148 | TRACER_LOGEVENT(FTrace_EVT_timer_wakeup_start, 0, 0); |
| 353 | giacomo | 149 | |
| 619 | mauro | 150 | if (!use_tsc) { |
| 151 | tmp = pit_read(frc); |
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| 152 | ADDPITSPEC((WORD) (lastTime - tmp), &globalCounter); |
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| 153 | lastTime = tmp; |
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| 40 | pj | 154 | |
| 619 | mauro | 155 | PITSPEC2TIMESPEC(&globalCounter, &now); |
| 156 | } else { |
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| 157 | ll_read_timespec(&now); |
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| 158 | } |
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| 40 | pj | 159 | |
| 619 | mauro | 160 | if (firstevent != NULL) { |
| 161 | activeEvent = 1; |
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| 162 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
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| 163 | if (!activeInt && evt_prol != NULL) { |
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| 164 | evt_prol(); |
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| 165 | } |
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| 166 | activeInt++; |
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| 120 | giacomo | 167 | |
| 619 | mauro | 168 | for (p = firstevent; p != NULL; p = pp) { |
| 169 | if ((p->time.tv_sec > now.tv_sec) || |
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| 170 | ((p->time.tv_sec == now.tv_sec) |
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| 171 | && (p->time.tv_nsec > now.tv_nsec))) { |
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| 172 | break; |
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| 173 | } |
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| 174 | pp = p->next; |
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| 175 | p->next = freeevents; |
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| 176 | freeevents = p; |
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| 177 | firstevent = pp; |
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| 178 | p->handler(p->par); |
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| 179 | } |
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| 180 | |||
| 181 | if (activeInt == 1 && evt_epil != NULL) { |
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| 182 | evt_epil(); |
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| 183 | } |
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| 184 | activeInt--; |
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| 185 | } |
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| 120 | giacomo | 186 | |
| 619 | mauro | 187 | if (!use_tsc) { |
| 188 | tmp = pit_read(frc); |
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| 189 | ADDPITSPEC((WORD) (lastTime - tmp), &globalCounter); |
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| 190 | lastTime = tmp; |
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| 191 | |||
| 192 | PITSPEC2TIMESPEC(&globalCounter, &now); |
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| 193 | } else { |
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| 194 | ll_read_timespec(&now); |
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| 195 | } |
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| 120 | giacomo | 196 | |
| 999 | trimarchi | 197 | if (firstevent) { |
| 198 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
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| 199 | NULL_TIMESPEC(&ttmp); |
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| 200 | } else { |
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| 201 | SUBTIMESPEC(&(firstevent->time), &now, &ttmp); |
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| 202 | } |
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| 203 | /* SUBTIMESPEC(&(firstevent->time), &now, &ttmp); */ |
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| 204 | tnext = TIMESPEC2USEC(&ttmp); |
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| 205 | |||
| 206 | if (!use_apic) { |
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| 207 | mul32div32to32(INT_MAX,1000000,1193182,max_tnext); |
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| 208 | } else { |
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| 209 | mul32div32to32(INT_MAX,1000,apic_clk_per_msec,max_tnext); |
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| 210 | } |
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| 211 | if (tnext>max_tnext) { |
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| 212 | message("(************TIME IN THE FUTURE************)"); |
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| 213 | } |
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| 214 | |||
| 215 | if (!use_apic) { |
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| 216 | mul32div32to32(tnext,1193182,1000000,tnext); |
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| 217 | pit_setconstant(0, tnext); |
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| 218 | } else { |
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| 619 | mauro | 219 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
| 220 | set_APIC_timer(tnext); |
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| 999 | trimarchi | 221 | } |
| 222 | } else { |
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| 223 | if (!use_apic) |
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| 224 | pit_setconstant(0, 0xFFFF); |
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| 225 | else |
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| 226 | set_APIC_timer(0xFFFFFFFF); |
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| 619 | mauro | 227 | } |
| 999 | trimarchi | 228 | activeEvent = 0; |
| 40 | pj | 229 | } else { |
| 619 | mauro | 230 | if (!use_apic) |
| 231 | pit_setconstant(0, 0xFFFF); |
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| 232 | else |
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| 233 | set_APIC_timer(0xFFFFFFFF); |
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| 40 | pj | 234 | } |
| 304 | giacomo | 235 | |
| 619 | mauro | 236 | TRACER_LOGEVENT(FTrace_EVT_timer_wakeup_end, (unsigned short int)currCtx, 0); |
| 40 | pj | 237 | } |
| 238 | |||
| 239 | int oneshot_event_delete(int index) |
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| 240 | { |
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| 619 | mauro | 241 | struct event *p1, *t; |
| 242 | struct timespec tmp, now; |
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| 243 | DWORD tnext; |
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| 244 | int firstdeleted = FALSE; |
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| 40 | pj | 245 | |
| 619 | mauro | 246 | TRACER_LOGEVENT(FTrace_EVT_timer_delete, 0, 0); |
| 353 | giacomo | 247 | |
| 619 | mauro | 248 | if (index == -1) |
| 249 | return -1; |
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| 250 | t = NULL; |
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| 251 | /* walk through list, finding spot, adjusting ticks parameter */ |
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| 252 | |||
| 253 | for (p1 = firstevent; (p1) && (index != p1->index); p1 = t->next) { |
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| 254 | t = p1; |
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| 40 | pj | 255 | } |
| 619 | mauro | 256 | |
| 257 | if (p1 == NULL) { |
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| 258 | return -1; |
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| 259 | } |
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| 260 | if (t == NULL) { |
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| 261 | firstevent = p1->next; |
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| 262 | firstdeleted = TRUE; |
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| 263 | } else { |
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| 264 | t->next = p1->next; |
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| 265 | } |
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| 266 | |||
| 267 | p1->next = freeevents; |
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| 268 | freeevents = p1; |
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| 269 | |||
| 270 | if (!activeEvent) { |
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| 271 | if (firstevent == NULL) { |
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| 272 | if (!use_apic) |
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| 273 | pit_setconstant(0, 0xFFFF); |
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| 274 | else |
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| 275 | set_APIC_timer(0xFFFFFFFF); |
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| 276 | } else { |
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| 277 | if (firstdeleted) { |
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| 278 | if (!use_tsc) |
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| 279 | ll_gettime(TIME_NEW, &now); |
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| 280 | else |
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| 281 | ll_read_timespec(&now); |
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| 282 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
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| 283 | NULL_TIMESPEC(&tmp); |
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| 284 | } else { |
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| 285 | SUBTIMESPEC(&(firstevent->time), &now, &tmp); |
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| 286 | } |
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| 287 | /*SUBTIMESPEC(&now, &(firstevent->time), &tmp); */ |
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| 288 | tnext = TIMESPEC2USEC(&tmp); |
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| 289 | if (!use_apic) { |
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| 290 | mul32div32to32(tnext,1193182,1000000,tnext); |
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| 291 | pit_setconstant(0, tnext); |
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| 292 | } else { |
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| 293 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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| 294 | set_APIC_timer(tnext); |
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| 295 | } |
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| 296 | } |
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| 297 | } |
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| 298 | } |
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| 299 | return 1; |
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| 40 | pj | 300 | } |