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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 | |||
31 | #include <ll/i386/stdlib.h> |
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32 | #include <ll/i386/mem.h> |
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33 | #include <ll/i386/pit.h> |
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299 | giacomo | 34 | #include <ll/i386/apic.h> |
131 | giacomo | 35 | #include <ll/i386/advtimer.h> |
304 | giacomo | 36 | #include <ll/i386/error.h> |
305 | giacomo | 37 | #include <ll/i386/64bit.h> |
131 | giacomo | 38 | |
40 | pj | 39 | #include <ll/sys/ll/ll-data.h> |
304 | giacomo | 40 | #include <ll/sys/ll/ll-func.h> |
40 | pj | 41 | #include <ll/sys/ll/time.h> |
42 | #include <ll/sys/ll/event.h> |
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43 | |||
353 | giacomo | 44 | #include <tracer.h> |
45 | extern unsigned short int currCtx; |
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46 | |||
40 | pj | 47 | FILE(EventOneShot); |
48 | |||
49 | extern int activeInt; |
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50 | int activeEvent; |
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51 | |||
52 | extern BYTE frc; |
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53 | |||
54 | extern struct event eventlist[MAX_EVENT]; |
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55 | extern WORD lastTime; |
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56 | extern struct pitspec globalCounter; |
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57 | |||
58 | extern struct event *freeevents; |
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59 | extern struct event *firstevent; |
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60 | |||
61 | extern void (*evt_prol) (void); |
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62 | extern void (*evt_epil) (void); |
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63 | |||
305 | giacomo | 64 | extern unsigned int apic_clk_per_msec; |
120 | giacomo | 65 | |
40 | pj | 66 | /* Switched to timespec */ |
67 | int oneshot_event_post(struct timespec time, void (*handler) (void *p), |
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68 | void *par) |
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69 | { |
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70 | struct event *p; |
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71 | struct event *p1, *t; |
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72 | struct timespec now, tmp; |
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73 | int done; |
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74 | DWORD tnext; |
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75 | |||
353 | giacomo | 76 | TRACER_LOGEVENT(FTrace_EVT_timer_post, 0, 0, 0); |
77 | |||
40 | pj | 78 | if (!freeevents) { |
304 | giacomo | 79 | message("NO FREE EVENTS !\n"); |
80 | ll_abort(20); |
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40 | pj | 81 | return -1; |
82 | } |
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83 | /* Extract from the ``free events'' queue */ |
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84 | p = freeevents; |
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85 | freeevents = p->next; |
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86 | |||
87 | /* Fill the event fields */ |
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88 | p->handler = handler; |
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89 | TIMESPEC_ASSIGN(&(p->time), &time); |
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90 | p->par = par; |
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91 | |||
92 | /* ...And insert it in the event queue!!! */ |
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93 | |||
94 | t = NULL; |
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95 | done = 0; |
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96 | /* walk through list, finding spot, adjusting ticks parameter */ |
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97 | for (p1 = firstevent; p1; p1 = t->next) { |
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98 | if (TIMESPEC_A_GT_B((&time), (&p1->time))) { |
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99 | t = p1; |
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100 | } else |
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101 | break; |
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102 | } |
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103 | |||
104 | /* adjust next entry */ |
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105 | if (t) { |
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106 | t->next = p; |
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107 | } else { |
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108 | firstevent = p; |
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109 | if (!activeEvent) { |
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305 | giacomo | 110 | #ifndef __TSC__ |
111 | ll_gettime(TIME_NEW, &now); |
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112 | #else |
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113 | ll_read_timespec(&now); |
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114 | #endif |
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40 | pj | 115 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
116 | NULL_TIMESPEC(&tmp); |
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117 | } else { |
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118 | SUBTIMESPEC(&(firstevent->time), &now, &tmp); |
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119 | } |
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120 | tnext = TIMESPEC2USEC(&tmp); |
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305 | giacomo | 121 | #ifndef __APIC__ |
329 | giacomo | 122 | mul32div32to32(tnext,1193182,1000000,tnext); |
305 | giacomo | 123 | pit_setconstant(0, tnext); |
124 | #else |
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125 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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303 | giacomo | 126 | set_APIC_timer(tnext); |
305 | giacomo | 127 | #endif |
40 | pj | 128 | } |
129 | } |
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130 | p->next = p1; |
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131 | |||
132 | return p->index; |
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133 | } |
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134 | |||
135 | |||
136 | |||
137 | void oneshot_wake_up(void) |
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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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305 | giacomo | 141 | #ifndef __TSC__ |
142 | WORD tmp; |
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143 | #endif |
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40 | pj | 144 | DWORD tnext; |
145 | |||
353 | giacomo | 146 | TRACER_LOGEVENT(FTrace_EVT_timer_wakeup_start, 0, 0, 0); |
147 | |||
305 | giacomo | 148 | #ifndef __TSC__ |
120 | giacomo | 149 | |
150 | tmp = pit_read(frc); |
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151 | ADDPITSPEC((WORD) (lastTime - tmp), &globalCounter); |
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152 | lastTime = tmp; |
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40 | pj | 153 | |
120 | giacomo | 154 | PITSPEC2TIMESPEC(&globalCounter, &now); |
40 | pj | 155 | |
305 | giacomo | 156 | #else |
120 | giacomo | 157 | |
131 | giacomo | 158 | ll_read_timespec(&now); |
120 | giacomo | 159 | |
305 | giacomo | 160 | #endif |
120 | giacomo | 161 | |
40 | pj | 162 | if (firstevent != NULL) { |
163 | activeEvent = 1; |
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164 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
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165 | if (!activeInt && evt_prol != NULL) { |
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166 | evt_prol(); |
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167 | } |
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168 | activeInt++; |
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169 | |||
170 | for (p = firstevent; p != NULL; p = pp) { |
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171 | if ((p->time.tv_sec > now.tv_sec) || |
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172 | ((p->time.tv_sec == now.tv_sec) |
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173 | && (p->time.tv_nsec > now.tv_nsec))) { |
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174 | break; |
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175 | } |
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176 | pp = p->next; |
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177 | p->next = freeevents; |
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178 | freeevents = p; |
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179 | firstevent = pp; |
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180 | p->handler(p->par); |
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181 | } |
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182 | |||
183 | if (activeInt == 1 && evt_epil != NULL) { |
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184 | evt_epil(); |
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185 | } |
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186 | activeInt--; |
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187 | } |
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188 | |||
305 | giacomo | 189 | #ifndef __TSC__ |
120 | giacomo | 190 | |
191 | tmp = pit_read(frc); |
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192 | ADDPITSPEC((WORD) (lastTime - tmp), &globalCounter); |
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193 | lastTime = tmp; |
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40 | pj | 194 | |
120 | giacomo | 195 | PITSPEC2TIMESPEC(&globalCounter, &now); |
40 | pj | 196 | |
305 | giacomo | 197 | #else |
120 | giacomo | 198 | |
131 | giacomo | 199 | ll_read_timespec(&now); |
120 | giacomo | 200 | |
305 | giacomo | 201 | #endif |
120 | giacomo | 202 | |
203 | |||
40 | pj | 204 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
205 | NULL_TIMESPEC(&ttmp); |
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206 | } else { |
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207 | SUBTIMESPEC(&(firstevent->time), &now, &ttmp); |
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208 | } |
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209 | /* SUBTIMESPEC(&(firstevent->time), &now, &ttmp); */ |
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210 | tnext = TIMESPEC2USEC(&ttmp); |
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305 | giacomo | 211 | #ifndef __APIC__ |
329 | giacomo | 212 | mul32div32to32(tnext,1193182,1000000,tnext); |
299 | giacomo | 213 | pit_setconstant(0, tnext); |
305 | giacomo | 214 | #else |
215 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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303 | giacomo | 216 | set_APIC_timer(tnext); |
305 | giacomo | 217 | #endif |
40 | pj | 218 | activeEvent = 0; |
219 | } else { |
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305 | giacomo | 220 | #ifndef __APIC__ |
299 | giacomo | 221 | pit_setconstant(0, 0xFFFF); |
305 | giacomo | 222 | #else |
303 | giacomo | 223 | set_APIC_timer(0xFFFFFFFF); |
305 | giacomo | 224 | #endif |
40 | pj | 225 | } |
304 | giacomo | 226 | |
353 | giacomo | 227 | TRACER_LOGEVENT(FTrace_EVT_timer_wakeup_end, 1, (int)currCtx, 0); |
228 | |||
40 | pj | 229 | } |
230 | |||
231 | int oneshot_event_delete(int index) |
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232 | { |
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233 | struct event *p1, *t; |
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234 | struct timespec tmp, now; |
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235 | DWORD tnext; |
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236 | int firstdeleted = FALSE; |
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237 | |||
353 | giacomo | 238 | TRACER_LOGEVENT(FTrace_EVT_timer_delete, 0, 0, 0); |
239 | |||
40 | pj | 240 | t = NULL; |
241 | /* walk through list, finding spot, adjusting ticks parameter */ |
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242 | |||
243 | for (p1 = firstevent; (p1) && (index != p1->index); p1 = t->next) { |
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244 | t = p1; |
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245 | } |
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246 | |||
247 | if (p1 == NULL) { |
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248 | return -1; |
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249 | } |
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250 | if (t == NULL) { |
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251 | firstevent = p1->next; |
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252 | firstdeleted = TRUE; |
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253 | } else { |
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254 | t->next = p1->next; |
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255 | } |
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256 | |||
257 | p1->next = freeevents; |
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258 | freeevents = p1; |
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259 | |||
260 | if (!activeEvent) { |
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261 | if (firstevent == NULL) { |
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305 | giacomo | 262 | #ifndef __APIC__ |
299 | giacomo | 263 | pit_setconstant(0, 0xFFFF); |
305 | giacomo | 264 | #else |
303 | giacomo | 265 | set_APIC_timer(0xFFFFFFFF); |
305 | giacomo | 266 | #endif |
40 | pj | 267 | } else { |
268 | if (firstdeleted) { |
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305 | giacomo | 269 | #ifndef __TSC__ |
270 | ll_gettime(TIME_NEW, &now); |
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271 | #else |
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272 | ll_read_timespec(&now); |
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273 | #endif |
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40 | pj | 274 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
275 | NULL_TIMESPEC(&tmp); |
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276 | } else { |
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277 | SUBTIMESPEC(&(firstevent->time), &now, &tmp); |
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278 | } |
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279 | /*SUBTIMESPEC(&now, &(firstevent->time), &tmp); */ |
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280 | tnext = TIMESPEC2USEC(&tmp); |
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305 | giacomo | 281 | #ifndef __APIC__ |
329 | giacomo | 282 | mul32div32to32(tnext,1193182,1000000,tnext); |
299 | giacomo | 283 | pit_setconstant(0, tnext); |
305 | giacomo | 284 | #else |
285 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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303 | giacomo | 286 | set_APIC_timer(tnext); |
305 | giacomo | 287 | #endif |
40 | pj | 288 | } |
289 | } |
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290 | } |
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291 | return 1; |
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292 | } |