drivers/staging/winbond/mlmetxrx.c

   1 //============================================================================
   2 //  Module Name:
   3 //    MLMETxRx.C
   4 //
   5 //  Description:
   6 //    The interface between MDS (MAC Data Service) and MLME.
   7 //
   8 //  Revision History:
   9 //  --------------------------------------------------------------------------
  10 //          200209      UN20 Jennifer Xu
  11 //                      Initial Release
  12 //          20021108    PD43 Austin Liu
  13 //          20030117    PD43 Austin Liu
  14 //                      Deleted MLMEReturnPacket and MLMEProcThread()
  15 //
  16 //  Copyright (c) 1996-2002 Winbond Electronics Corp. All Rights Reserved.
  17 //============================================================================
  18 #include "os_common.h"
  19
  20 void MLMEResetTxRx(struct wb35_adapter * adapter)
  21 {
  22         s32     i;
  23
  24         // Reset the interface between MDS and MLME
  25         for (i = 0; i < MAX_NUM_TX_MMPDU; i++)
  26                 adapter->sMlmeFrame.TxMMPDUInUse[i] = false;
  27         for (i = 0; i < MAX_NUM_RX_MMPDU; i++)
  28                 adapter->sMlmeFrame.SaveRxBufSlotInUse[i] = false;
  29
  30         adapter->sMlmeFrame.wNumRxMMPDUInMLME   = 0;
  31         adapter->sMlmeFrame.wNumRxMMPDUDiscarded = 0;
  32         adapter->sMlmeFrame.wNumRxMMPDU          = 0;
  33         adapter->sMlmeFrame.wNumTxMMPDUDiscarded = 0;
  34         adapter->sMlmeFrame.wNumTxMMPDU          = 0;
  35         adapter->sLocalPara.boCCAbusy    = false;
  36         adapter->sLocalPara.iPowerSaveMode     = PWR_ACTIVE;     // Power active
  37 }
  38
  39 //=============================================================================
  40 //      Function:
  41 //    MLMEGetMMPDUBuffer()
  42 //
  43 //      Description:
  44 //    Return the pointer to an available data buffer with
  45 //    the size MAX_MMPDU_SIZE for a MMPDU.
  46 //
  47 //  Arguments:
  48 //    adapter   - pointer to the miniport adapter context.
  49 //
  50 //      Return value:
  51 //    NULL     : No available data buffer available
  52 //    Otherwise: Pointer to the data buffer
  53 //=============================================================================
  54
  55 /* FIXME: Should this just be replaced with kmalloc() and kfree()? */
  56 u8 *MLMEGetMMPDUBuffer(struct wb35_adapter * adapter)
  57 {
  58         s32 i;
  59         u8 *returnVal;
  60
  61         for (i = 0; i< MAX_NUM_TX_MMPDU; i++) {
  62                 if (adapter->sMlmeFrame.TxMMPDUInUse[i] == false)
  63                         break;
  64         }
  65         if (i >= MAX_NUM_TX_MMPDU) return NULL;
  66
  67         returnVal = (u8 *)&(adapter->sMlmeFrame.TxMMPDU[i]);
  68         adapter->sMlmeFrame.TxMMPDUInUse[i] = true;
  69
  70         return returnVal;
  71 }
  72
  73 //=============================================================================
  74 u8 MLMESendFrame(struct wb35_adapter * adapter, u8 *pMMPDU, u16 len, u8 DataType)
  75 /*      DataType : FRAME_TYPE_802_11_MANAGEMENT, FRAME_TYPE_802_11_MANAGEMENT_CHALLENGE,
  76                                 FRAME_TYPE_802_11_DATA */
  77 {
  78         if (adapter->sMlmeFrame.IsInUsed != PACKET_FREE_TO_USE) {
  79                 adapter->sMlmeFrame.wNumTxMMPDUDiscarded++;
  80                 return false;
  81         }
  82         adapter->sMlmeFrame.IsInUsed = PACKET_COME_FROM_MLME;
  83
  84         // Keep information for sending
  85         adapter->sMlmeFrame.pMMPDU = pMMPDU;
  86         adapter->sMlmeFrame.DataType = DataType;
  87         // len must be the last setting due to QUERY_SIZE_SECOND of Mds
  88         adapter->sMlmeFrame.len = len;
  89         adapter->sMlmeFrame.wNumTxMMPDU++;
  90
  91         // H/W will enter power save by set the register. S/W don't send null frame
  92         //with PWRMgt bit enbled to enter power save now.
  93
  94         // Transmit NDIS packet
  95         Mds_Tx(adapter);
  96         return true;
  97 }
  98
  99 void
 100 MLME_GetNextPacket(struct wb35_adapter * adapter, PDESCRIPTOR pDes)
 101 {
 102 #define DESCRIPTOR_ADD_BUFFER( _D, _A, _S ) \
 103 {\
 104         _D->InternalUsed = _D->buffer_start_index + _D->buffer_number; \
 105         _D->InternalUsed %= MAX_DESCRIPTOR_BUFFER_INDEX; \
 106         _D->buffer_address[ _D->InternalUsed ] = _A; \
 107         _D->buffer_size[ _D->InternalUsed ] = _S; \
 108         _D->buffer_total_size += _S; \
 109         _D->buffer_number++;\
 110 }
 111
 112         DESCRIPTOR_ADD_BUFFER( pDes, adapter->sMlmeFrame.pMMPDU, adapter->sMlmeFrame.len );
 113         pDes->Type = adapter->sMlmeFrame.DataType;
 114 }
 115
 116 void MLMEfreeMMPDUBuffer(struct wb35_adapter * adapter, s8 *pData)
 117 {
 118         int i;
 119
 120         // Reclaim the data buffer
 121         for (i = 0; i < MAX_NUM_TX_MMPDU; i++) {
 122                 if (pData == (s8 *)&(adapter->sMlmeFrame.TxMMPDU[i]))
 123                         break;
 124         }
 125         if (adapter->sMlmeFrame.TxMMPDUInUse[i])
 126                 adapter->sMlmeFrame.TxMMPDUInUse[i] = false;
 127         else  {
 128                 // Something wrong
 129                 // PD43 Add debug code here???
 130         }
 131 }
 132
 133 void
 134 MLME_SendComplete(struct wb35_adapter * adapter, u8 PacketID, unsigned char SendOK)
 135 {
 136         MLME_TXCALLBACK TxCallback;
 137
 138     // Reclaim the data buffer
 139         adapter->sMlmeFrame.len = 0;
 140         MLMEfreeMMPDUBuffer( adapter, adapter->sMlmeFrame.pMMPDU );
 141
 142
 143         TxCallback.bResult = MLME_SUCCESS;
 144
 145         // Return resource
 146         adapter->sMlmeFrame.IsInUsed = PACKET_FREE_TO_USE;
 147 }
 148
 149
 150