annotate src/gpf2/osl/os_com_ir.c @ 597:f18b29e27be5

First attempt at MCSI voice path automatic switching The function is implemented at the ACI level in both aci2 and aci3, successfully avoids triggering the DSP bug on the first call, but the shutdown of MCSI upon call completion is not working properly yet in either version.
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 27 Mar 2019 22:18:35 +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
490
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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 }