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ITek_util.c
资源名称：mac.zip　[点击查看]
上传用户：cnfair
上传日期：2007-01-07
资源大小：32k
文件大小：3k
源码类别：

驱动编程

开发平台：

Visual C++

ITek_util.c：源码内容
  1. /////////////////////////////////////////////////////////////////////////
  2. // atm_util.c
  3. //  any utility routines
  4. //to use the following functions from standard c-library directly
  5. #include  <string.h>
  6. #pragma intrinsic(memcpy, memcmp, memset, strcat, strcmp, strcpy, strlen)
  8. #pragma warning(disable:4201 4514 4100 4127)
  10. //to include Windows95 DDK header files
  11. //
  12. #define WANTVXDWRAPS
  14. #include  <basedef.h>
  15. #include  <vmm.h>
  16. #include  <vxdwraps.h>
  17. #include  <debug.h>
  19. // copied from Miniport.h for NT3.51
  20. #define FIELD_OFFSET(type, field)    ((LONG)&(((type *)0)->field))
  22. #include  <ndis.h>
  23. #include  <vwin32.h>
  24. #include  <efilter.h>
  26. #include "ITek_type.h"
  27. #include    "ITek_init.h"
  28. #include    "ITek_util.h"
  30. #pragma VxD_LOCKED_CODE_SEG
  31. #pragma VxD_LOCKED_DATA_SEG
  34. #ifdef ITEK_TIMER
  36. VOID NDIS_API
  37. ITekTimerFunction(
  38. IN PVOID SystemSpecific1,
  39. IN PVOID FunctionContext,
  40. IN PVOID SystemSpecific2,
  41. IN PVOID SystemSpecific3
  42. )
  43. {
  44. PITEK_ADAPTER pITekAdapter = (PITEK_ADAPTER)FunctionContext;
  46. #ifdef DEBUG
  47. Debug_Printf("ITEK:ITekTimerFunction() Entryn");
  48. #endif
  50. NdisSetTimer(
  51. &pITekAdapter->NdisTimer,
  52. ITEK_TIMEOUT_MSEC);
  54. #ifdef DEBUG
  55. Debug_Printf("ITEK:ITekTimerFunction() Returnn");
  56. #endif
  57. return;
  58. }
  60. #endif //ITEK_TIMER
  64. VOID NDIS_API
  65. ITekAllocateSharedMemory(
  66. IN NDIS_HANDLE NdisAdapterHandle,
  67. IN ULONG Length,
  68. IN ULONG AlignMask,
  69. OUT PVOID *VirtualAddress,
  70. OUT PNDIS_PHYSICAL_ADDRESS PhysicalAddress
  71. )
  72. {
  73. ULONG nPages;
  74. PVOID VirtualAddressLocal;
  75. PVOID PhysicalAddressLocal;
  77. nPages = (Length+4095)/4096;
  79. VirtualAddressLocal = (PVOID)_PageAllocate(
  80. nPages, //nPages
  81. PG_SYS, //nType
  82. (ULONG) 0, //VM 
  83. AlignMask, //AignMask
  84. (ULONG) 1, //minPhys 
  85. (ULONG)0x0000FFFF, //maxPhys
  86. (PVOID *)&PhysicalAddressLocal, //
  87. (ULONG)(PAGECONTIG | PAGEFIXED | PAGEUSEALIGN) //flags
  88. );
  90. *VirtualAddress = VirtualAddressLocal;
  91. *PhysicalAddress = (NDIS_PHYSICAL_ADDRESS)PhysicalAddressLocal;
  93. return;
  94. }
  97. VOID NDIS_API
  98. ITekFreeSharedMemory(
  99. IN NDIS_HANDLE NdisAdapterHandle,
  100. IN PVOID VirtualAddress
  101. )
  102. {
  103. _PageFree(VirtualAddress, 0);
  104. return;
  105. }
  108. VOID NDIS_API
  109. ITekAllocateMemory(
  110. OUT PVOID *VirtualMemory,
  111. IN ULONG nBytes
  112. )
  113. {
  114. PVOID VirtualMemoryLocal;
  116. VirtualMemoryLocal = (PVOID)_HeapAllocate(
  117. nBytes,
  118. (ULONG)(HEAPLOCKEDIFDP|HEAPZEROINIT));
  120. *VirtualMemory = VirtualMemoryLocal;
  122. return;
  123. }
  125. VOID NDIS_API
  126. ITekFreeMemory(
  127. IN PVOID VirtualMemory
  128. )
  129. {
  130. (void)_HeapFree(VirtualMemory, 0);
  132. return;
  133. }