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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 | |||
44 | FILE(EventOneShot); |
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45 | |||
46 | extern int activeInt; |
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47 | int activeEvent; |
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48 | |||
49 | extern BYTE frc; |
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50 | |||
51 | extern struct event eventlist[MAX_EVENT]; |
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52 | extern WORD lastTime; |
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53 | extern struct pitspec globalCounter; |
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54 | |||
55 | extern struct event *freeevents; |
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56 | extern struct event *firstevent; |
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57 | |||
58 | extern void (*evt_prol) (void); |
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59 | extern void (*evt_epil) (void); |
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60 | |||
305 | giacomo | 61 | extern unsigned int apic_clk_per_msec; |
120 | giacomo | 62 | |
40 | pj | 63 | /* Switched to timespec */ |
64 | int oneshot_event_post(struct timespec time, void (*handler) (void *p), |
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65 | void *par) |
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66 | { |
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67 | struct event *p; |
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68 | struct event *p1, *t; |
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69 | struct timespec now, tmp; |
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70 | int done; |
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71 | DWORD tnext; |
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72 | |||
73 | if (!freeevents) { |
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304 | giacomo | 74 | message("NO FREE EVENTS !\n"); |
75 | ll_abort(20); |
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40 | pj | 76 | return -1; |
77 | } |
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78 | /* Extract from the ``free events'' queue */ |
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79 | p = freeevents; |
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80 | freeevents = p->next; |
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81 | |||
82 | /* Fill the event fields */ |
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83 | p->handler = handler; |
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84 | TIMESPEC_ASSIGN(&(p->time), &time); |
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85 | p->par = par; |
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86 | |||
87 | /* ...And insert it in the event queue!!! */ |
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88 | |||
89 | t = NULL; |
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90 | done = 0; |
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91 | /* walk through list, finding spot, adjusting ticks parameter */ |
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92 | for (p1 = firstevent; p1; p1 = t->next) { |
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93 | if (TIMESPEC_A_GT_B((&time), (&p1->time))) { |
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94 | t = p1; |
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95 | } else |
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96 | break; |
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97 | } |
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98 | |||
99 | /* adjust next entry */ |
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100 | if (t) { |
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101 | t->next = p; |
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102 | } else { |
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103 | firstevent = p; |
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104 | if (!activeEvent) { |
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305 | giacomo | 105 | #ifndef __TSC__ |
106 | ll_gettime(TIME_NEW, &now); |
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107 | #else |
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108 | ll_read_timespec(&now); |
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109 | #endif |
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40 | pj | 110 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
111 | NULL_TIMESPEC(&tmp); |
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112 | } else { |
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113 | SUBTIMESPEC(&(firstevent->time), &now, &tmp); |
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114 | } |
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115 | tnext = TIMESPEC2USEC(&tmp); |
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305 | giacomo | 116 | #ifndef __APIC__ |
329 | giacomo | 117 | mul32div32to32(tnext,1193182,1000000,tnext); |
305 | giacomo | 118 | pit_setconstant(0, tnext); |
119 | #else |
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120 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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303 | giacomo | 121 | set_APIC_timer(tnext); |
305 | giacomo | 122 | #endif |
40 | pj | 123 | } |
124 | } |
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125 | p->next = p1; |
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126 | |||
127 | return p->index; |
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128 | } |
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129 | |||
130 | |||
131 | |||
132 | void oneshot_wake_up(void) |
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133 | { /* CHANGE the NAME, please... */ |
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134 | struct event *p = NULL, *pp; |
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135 | struct timespec now, ttmp; |
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305 | giacomo | 136 | #ifndef __TSC__ |
137 | WORD tmp; |
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138 | #endif |
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40 | pj | 139 | DWORD tnext; |
140 | |||
305 | giacomo | 141 | #ifndef __TSC__ |
120 | giacomo | 142 | |
143 | tmp = pit_read(frc); |
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144 | ADDPITSPEC((WORD) (lastTime - tmp), &globalCounter); |
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145 | lastTime = tmp; |
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40 | pj | 146 | |
120 | giacomo | 147 | PITSPEC2TIMESPEC(&globalCounter, &now); |
40 | pj | 148 | |
305 | giacomo | 149 | #else |
120 | giacomo | 150 | |
131 | giacomo | 151 | ll_read_timespec(&now); |
120 | giacomo | 152 | |
305 | giacomo | 153 | #endif |
120 | giacomo | 154 | |
40 | pj | 155 | if (firstevent != NULL) { |
156 | activeEvent = 1; |
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157 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
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158 | if (!activeInt && evt_prol != NULL) { |
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159 | evt_prol(); |
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160 | } |
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161 | activeInt++; |
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162 | |||
163 | for (p = firstevent; p != NULL; p = pp) { |
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164 | if ((p->time.tv_sec > now.tv_sec) || |
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165 | ((p->time.tv_sec == now.tv_sec) |
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166 | && (p->time.tv_nsec > now.tv_nsec))) { |
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167 | break; |
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168 | } |
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169 | pp = p->next; |
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170 | p->next = freeevents; |
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171 | freeevents = p; |
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172 | firstevent = pp; |
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173 | p->handler(p->par); |
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174 | } |
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175 | |||
176 | if (activeInt == 1 && evt_epil != NULL) { |
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177 | evt_epil(); |
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178 | } |
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179 | activeInt--; |
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180 | } |
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181 | |||
305 | giacomo | 182 | #ifndef __TSC__ |
120 | giacomo | 183 | |
184 | tmp = pit_read(frc); |
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185 | ADDPITSPEC((WORD) (lastTime - tmp), &globalCounter); |
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186 | lastTime = tmp; |
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40 | pj | 187 | |
120 | giacomo | 188 | PITSPEC2TIMESPEC(&globalCounter, &now); |
40 | pj | 189 | |
305 | giacomo | 190 | #else |
120 | giacomo | 191 | |
131 | giacomo | 192 | ll_read_timespec(&now); |
120 | giacomo | 193 | |
305 | giacomo | 194 | #endif |
120 | giacomo | 195 | |
196 | |||
40 | pj | 197 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
198 | NULL_TIMESPEC(&ttmp); |
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199 | } else { |
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200 | SUBTIMESPEC(&(firstevent->time), &now, &ttmp); |
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201 | } |
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202 | /* SUBTIMESPEC(&(firstevent->time), &now, &ttmp); */ |
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203 | tnext = TIMESPEC2USEC(&ttmp); |
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305 | giacomo | 204 | #ifndef __APIC__ |
329 | giacomo | 205 | mul32div32to32(tnext,1193182,1000000,tnext); |
299 | giacomo | 206 | pit_setconstant(0, tnext); |
305 | giacomo | 207 | #else |
208 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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303 | giacomo | 209 | set_APIC_timer(tnext); |
305 | giacomo | 210 | #endif |
40 | pj | 211 | activeEvent = 0; |
212 | } else { |
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305 | giacomo | 213 | #ifndef __APIC__ |
299 | giacomo | 214 | pit_setconstant(0, 0xFFFF); |
305 | giacomo | 215 | #else |
303 | giacomo | 216 | set_APIC_timer(0xFFFFFFFF); |
305 | giacomo | 217 | #endif |
40 | pj | 218 | } |
304 | giacomo | 219 | |
40 | pj | 220 | } |
221 | |||
222 | int oneshot_event_delete(int index) |
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223 | { |
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224 | struct event *p1, *t; |
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225 | struct timespec tmp, now; |
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226 | DWORD tnext; |
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227 | int firstdeleted = FALSE; |
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228 | |||
229 | t = NULL; |
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230 | /* walk through list, finding spot, adjusting ticks parameter */ |
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231 | |||
232 | for (p1 = firstevent; (p1) && (index != p1->index); p1 = t->next) { |
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233 | t = p1; |
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234 | } |
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235 | |||
236 | if (p1 == NULL) { |
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237 | return -1; |
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238 | } |
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239 | if (t == NULL) { |
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240 | firstevent = p1->next; |
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241 | firstdeleted = TRUE; |
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242 | } else { |
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243 | t->next = p1->next; |
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244 | } |
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245 | |||
246 | p1->next = freeevents; |
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247 | freeevents = p1; |
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248 | |||
249 | if (!activeEvent) { |
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250 | if (firstevent == NULL) { |
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305 | giacomo | 251 | #ifndef __APIC__ |
299 | giacomo | 252 | pit_setconstant(0, 0xFFFF); |
305 | giacomo | 253 | #else |
303 | giacomo | 254 | set_APIC_timer(0xFFFFFFFF); |
305 | giacomo | 255 | #endif |
40 | pj | 256 | } else { |
257 | if (firstdeleted) { |
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305 | giacomo | 258 | #ifndef __TSC__ |
259 | ll_gettime(TIME_NEW, &now); |
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260 | #else |
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261 | ll_read_timespec(&now); |
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262 | #endif |
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40 | pj | 263 | if (TIMESPEC_A_GT_B(&now, &(firstevent->time))) { |
264 | NULL_TIMESPEC(&tmp); |
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265 | } else { |
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266 | SUBTIMESPEC(&(firstevent->time), &now, &tmp); |
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267 | } |
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268 | /*SUBTIMESPEC(&now, &(firstevent->time), &tmp); */ |
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269 | tnext = TIMESPEC2USEC(&tmp); |
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305 | giacomo | 270 | #ifndef __APIC__ |
329 | giacomo | 271 | mul32div32to32(tnext,1193182,1000000,tnext); |
299 | giacomo | 272 | pit_setconstant(0, tnext); |
305 | giacomo | 273 | #else |
274 | mul32div32to32(tnext,apic_clk_per_msec,1000,tnext); |
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303 | giacomo | 275 | set_APIC_timer(tnext); |
305 | giacomo | 276 | #endif |
40 | pj | 277 | } |
278 | } |
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279 | } |
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280 | return 1; |
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281 | } |