FreeCalypso > hg > fc-magnetite

annotate src/gpf2/osl/os_com_ir.c @ 662:8cd8fd15a095

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SIM speed enhancement re-enabled and made configurable TI's original code supported SIM speed enhancement, but Openmoko had it disabled, and OM's disabling of speed enhancement somehow caused certain SIM cards to start working which didn't work before (OM's bug #666). Because our FC community is much smaller in year 2020 than OM's community was in their day, we are not able to find one of those #666-affected SIMs, thus the real issue they had encountered remains elusive. Thus our solution is to re-enable SIM speed enhancement and simply wait for if and when someone runs into a #666-affected SIM once again. We provide a SIM_allow_speed_enhancement global variable that allows SIM speed enhancement to be enabled or disabled per session, and an /etc/SIM_spenh file in FFS that allows it to enabled or disabled on a non-volatile basis. SIM speed enhancement is now enabled by default.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 24 May 2020 05:02:28 +0000
parents a996d0429c59
children
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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_com.obj in frame_na7_db_ir.lib from the Leonardo package.
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4 */
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5
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6 /* set of included headers from COFF symtab: */
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7 #include <stdio.h>
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8 #include <string.h>
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9 #include "nucleus.h"
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10 #include "typedefs.h"
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11 #include "os.h"
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12 #include "gdi.h"
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13 #include "os_types.h"
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14 #include "os_glob.h"
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15
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16 extern TC_PROTECT TCD_System_Protect;
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17 extern VOID TCT_Protect(TC_PROTECT *protect);
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18 extern VOID TCT_Unprotect(VOID);
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19 extern VOID TCT_Unprotect_Specific(TC_PROTECT *protect);
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20
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21 #define My_System_Protect() TCT_Protect(&TCD_System_Protect)
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22 #define My_System_Unprotect() TCT_Unprotect_Specific(&TCD_System_Protect)
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23
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24 extern T_OS_COM_TABLE_ENTRY ComTable[];
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25 extern unsigned os_tick_to_time_multiplier;
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26
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27 extern int ObtainSemaphoreCB(NU_SEMAPHORE *SemCB, ULONG Timeout,
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28 USHORT wait_check);
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29 extern int ReleaseSemaphoreCB(NU_SEMAPHORE *SemCB);
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30
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31 GLOBAL LONG
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32 os_SendToQueue(OS_HANDLE TaskHandle, OS_HANDLE ComHandle, USHORT Priority,
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33 ULONG Suspend, OS_QDATA *Msg)
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34 {
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35 T_OS_COM_TABLE_ENTRY *pTable;
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36 T_QDATA_ELEMENT *elem;
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37 T_QUEUE *queue;
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38 int ret;
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39 NU_SEMAPHORE *CBPtr;
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40 USHORT watmark;
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41
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42 if (ComHandle <= 0 || ComHandle > MaxCommunications)
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43 return(OS_INVALID_QUEUE);
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44 pTable = ComTable + ComHandle;
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45 if (!pTable->Name[0])
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46 return(OS_INVALID_QUEUE);
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47 CBPtr = &pTable->FreeSemCB;
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48 ret = ObtainSemaphoreCB(CBPtr, Suspend, 1);
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49 if (ret == OS_ERROR || ret == OS_TIMEOUT)
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50 return(ret);
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51 My_System_Protect();
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52 elem = pTable->pFreeElement;
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53 pTable->pFreeElement = elem->pNext;
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54 memcpy(&elem->Data, Msg, sizeof(OS_QDATA));
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55 queue = &pTable->Queue[Priority - OS_MIN_PRIORITY];
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56 *queue->pWrite++ = &elem->Data;
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57 if (queue->pWrite - queue->pStart >= pTable->Entries + 1)
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58 queue->pWrite = queue->pStart;
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59 watmark = pTable->Entries - CBPtr->sm_semaphore_count;
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60 if (pTable->MaxUsed < watmark)
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61 pTable->MaxUsed = watmark;
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62 My_System_Unprotect();
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63 ReleaseSemaphoreCB(&pTable->UsedSemCB);
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64 return(ret);
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65 }
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66
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67 GLOBAL LONG
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68 os_ReceiveFromQueue(OS_HANDLE TaskHandle, OS_HANDLE ComHandle,
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69 OS_QDATA *Msg, ULONG Timeout)
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70 {
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71 T_QDATA_ELEMENT *pElem;
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72 UNSIGNED c_time;
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73 int ret;
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74 USHORT i;
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75 T_QUEUE *pQueue;
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76 T_OS_COM_TABLE_ENTRY *pTable;
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77
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78 pTable = ComTable + ComHandle;
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79 if (!pTable->Name[0])
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80 return(OS_ERROR);
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81 pTable->current_msg.type = 0;
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82 ret = ObtainSemaphoreCB(&pTable->UsedSemCB, Timeout, 0);
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83 if (ret == OS_ERROR || ret == OS_TIMEOUT)
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84 return(ret);
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85 My_System_Protect();
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86 for (i = OS_MAX_PRIORITY; i >= OS_MIN_PRIORITY; i--) {
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87 pQueue = &pTable->Queue[i - OS_MIN_PRIORITY];
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88 if (pQueue->pWrite != pQueue->pRead)
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89 break;
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90 }
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91 if (i < OS_MIN_PRIORITY) {
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92 My_System_Unprotect();
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93 ReleaseSemaphoreCB(&pTable->FreeSemCB);
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94 return(OS_ERROR);
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95 }
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96 memcpy(Msg, *pQueue->pRead, sizeof(OS_QDATA));
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97 pElem = (T_QDATA_ELEMENT *)*pQueue->pRead++;
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98 pElem->Data.data16 = 0;
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99 pElem->pNext = pTable->pFreeElement;
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100 pTable->pFreeElement = pElem;
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101 if (pQueue->pRead - pQueue->pStart >= pTable->Entries + 1)
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102 pQueue->pRead = pQueue->pStart;
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103 pTable->current_msg.type = Msg->data16;
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104 pTable->current_msg.opc = Msg->data32;
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105 c_time = NU_Retrieve_Clock();
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106 pTable->current_msg.time = SYSTEM_TICKS_TO_TIME(c_time);
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107 pTable->current_msg.ptr = Msg->ptr;
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108 My_System_Unprotect();
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109 ReleaseSemaphoreCB(&pTable->FreeSemCB);
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110 return(OS_OK);
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111 }