FreeCalypso > hg > fc-magnetite

annotate src/gpf2/osl/os_tim_fl.c @ 487:91e8dac34ada

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src/gpf2/osl: initial import from old freecalypso-sw tree
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 22 Jun 2018 05:56:16 +0000
parents
children c4117b996197
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487
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This C module is a reconstruction based on the disassembly of
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3 * os_tim.obj in frame_na7_db_fl.lib from the Leonardo package,
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4 * subsequently reworked by Space Falcon.
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5 */
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6
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7 /* set of included headers from COFF symtab: */
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8 #include <stdio.h>
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9 #include "gpfconf.h" /* FreeCalypso addition */
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10 #include "../../nucleus/nucleus.h"
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11 #include "typedefs.h"
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12 #include "os.h"
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13 #include "gdi.h"
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14 #include "os_types.h"
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15 #include "os_glob.h"
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16
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17 extern UNSIGNED TMD_Timer;
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18 extern INT TMD_Timer_State;
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19
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20 extern T_OS_TIMER_ENTRY TimerTable[];
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21 extern T_OS_TIMER_TABLE_ENTRY *p_list[];
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22
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23 extern void os_Timeout(UNSIGNED t_handle);
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24 extern void timer_error(int err);
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25
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26 unsigned os_time_to_tick_multiplier = TIME_TO_TICK_TDMA_FRAME_MULTIPLIER;
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27 unsigned os_tick_to_time_multiplier = TICK_TO_TIME_TDMA_FRAME_MULTIPLIER;
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28
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29 unsigned volatile t_start_ticks;
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30 T_OS_TIMER_TABLE_ENTRY *t_running;
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31 int used_timers;
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32 int next_t_handle;
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33 int volatile t_list_access;
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34 int max_used_timers;
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35 NU_SEMAPHORE TimSemCB;
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36 NU_TIMER os_timer_cb;
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37
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38 #define BARRIER asm volatile ("": : :"memory")
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39
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40 GLOBAL LONG
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41 os_set_tick(int os_system_tick)
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42 {
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43 switch (os_system_tick) {
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44 case SYSTEM_TICK_TDMA_FRAME:
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45 os_time_to_tick_multiplier = TIME_TO_TICK_TDMA_FRAME_MULTIPLIER;
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46 os_tick_to_time_multiplier = TICK_TO_TIME_TDMA_FRAME_MULTIPLIER;
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47 return(OS_OK);
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48 case SYSTEM_TICK_10_MS:
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49 os_time_to_tick_multiplier = TIME_TO_TICK_10MS_MULTIPLIER;
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50 os_tick_to_time_multiplier = TICK_TO_TIME_10MS_MULTIPLIER;
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51 return(OS_OK);
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52 default:
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53 return(OS_ERROR);
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54 }
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55 }
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56
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57 GLOBAL LONG
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58 os_TimerInformation(USHORT Index, char *Buffer)
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59 {
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60 static int t_info_read;
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61
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62 if (t_info_read) {
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63 t_info_read = 0;
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64 return(OS_ERROR);
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65 }
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66 sprintf(Buffer, "Maximum %d of %d available timers running",
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67 max_used_timers, MaxSimultaneousTimer);
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68 t_info_read = 1;
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69 return(OS_OK);
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70 }
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71
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72 GLOBAL LONG
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73 os_TimInit(void)
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74 {
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75 int i;
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76
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77 if (NU_Create_Semaphore(&TimSemCB, "TIMSEM", 1, NU_PRIORITY)
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78 != NU_SUCCESS)
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79 return(OS_ERROR);
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80 if (NU_Create_Timer(&os_timer_cb, "OS_TIMER", os_Timeout, 0, 1, 0,
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81 NU_DISABLE_TIMER) != NU_SUCCESS)
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82 return(OS_ERROR);
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83 used_timers = 0;
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84 max_used_timers = 0;
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85 next_t_handle = 1;
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86 t_list_access = 0;
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87 t_start_ticks = 0;
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88 p_list[0] = 0;
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89 for (i = 1; i < MaxSimultaneousTimer; i++) {
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90 TimerTable[i].entry.status = TMR_FREE;
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91 TimerTable[i].entry.next = 0;
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92 TimerTable[i].entry.prev = 0;
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93 TimerTable[i].next_t_handle = i + 1;
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94 p_list[i] = 0;
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95 }
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96 TimerTable[MaxSimultaneousTimer].entry.status = TMR_FREE;
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97 TimerTable[MaxSimultaneousTimer].next_t_handle = 0;
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98 t_running = 0;
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99 return(OS_OK);
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100 }
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101
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102 GLOBAL LONG
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103 os_RecoverTick(OS_TICK ticks)
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104 {
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105 UNSIGNED current_system_clock;
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106
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107 current_system_clock = NU_Retrieve_Clock();
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108 NU_Set_Clock(current_system_clock + ticks);
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109 if (TMD_Timer_State == TM_ACTIVE) {
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110 if (TMD_Timer <= ticks) {
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111 TMD_Timer_State = TM_EXPIRED;
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112 TMD_Timer = 0;
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113 } else
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114 TMD_Timer -= ticks;
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115 }
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116 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 GLOBAL LONG
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 os_QueryTimer(OS_HANDLE TaskHandle, OS_HANDLE TimerHandle,
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 OS_TIME *RemainingTime)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 T_OS_TIMER_TABLE_ENTRY *timer, *t_iter;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 OS_TICK c_ticks, r_ticks, e_ticks;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 STATUS sts;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 if (TimerHandle > MaxSimultaneousTimer)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 return(OS_ERROR);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 sts = NU_Obtain_Semaphore(&TimSemCB, NU_SUSPEND);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 timer = &TimerTable[TimerHandle].entry;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 if (timer->status == TMR_FREE) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 if (sts == NU_SUCCESS)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 NU_Release_Semaphore(&TimSemCB);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 return(OS_ERROR);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 t_list_access = 1;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 BARRIER;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 if (!t_running) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 r_ticks = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 goto out;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 c_ticks = NU_Retrieve_Clock();
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 e_ticks = c_ticks - t_start_ticks;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 t_iter = t_running;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 if (t_iter->r_ticks >= e_ticks)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 r_ticks = t_iter->r_ticks - e_ticks;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 else
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 r_ticks = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 while (t_iter != timer) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 t_iter = t_iter->next;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 if (t_iter == t_running) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 r_ticks = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 goto out;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 r_ticks += t_iter->r_ticks;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 out: BARRIER;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 t_list_access = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 if (sts == NU_SUCCESS)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 NU_Release_Semaphore(&TimSemCB);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 *RemainingTime = SYSTEM_TICKS_TO_TIME(r_ticks);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 GLOBAL LONG
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 os_InactivityTicks(int *next_event, OS_TICK *next_event_ticks)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 *next_event = 1;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 switch (TMD_Timer_State) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 case TM_ACTIVE:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 *next_event_ticks = TMD_Timer;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 case TM_NOT_ACTIVE:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 *next_event_ticks = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 *next_event = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 default:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 *next_event_ticks = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 }