release/src-rt-6.x.4708/linux/linux-2.6.36/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 "sysdef.h"
  19
  20 #include "mds_f.h"
  21
  22 /* ============================================================================= */
  23 u8 MLMESendFrame(struct wbsoft_priv *adapter, u8 *pMMPDU, u16 len, u8 DataType)
  24 /*      DataType : FRAME_TYPE_802_11_MANAGEMENT, FRAME_TYPE_802_11_MANAGEMENT_CHALLENGE,
  25                                 FRAME_TYPE_802_11_DATA */
  26 {
  27         if (adapter->sMlmeFrame.IsInUsed != PACKET_FREE_TO_USE) {
  28                 adapter->sMlmeFrame.wNumTxMMPDUDiscarded++;
  29                 return false;
  30         }
  31         adapter->sMlmeFrame.IsInUsed = PACKET_COME_FROM_MLME;
  32
  33         /* Keep information for sending */
  34         adapter->sMlmeFrame.pMMPDU = pMMPDU;
  35         adapter->sMlmeFrame.DataType = DataType;
  36         /* len must be the last setting due to QUERY_SIZE_SECOND of Mds */
  37         adapter->sMlmeFrame.len = len;
  38         adapter->sMlmeFrame.wNumTxMMPDU++;
  39
  40         /* H/W will enter power save by set the register. S/W don't send null frame
  41         with PWRMgt bit enbled to enter power save now. */
  42
  43         /* Transmit NDIS packet */
  44         Mds_Tx(adapter);
  45         return true;
  46 }
  47
  48 void MLME_GetNextPacket(struct wbsoft_priv *adapter, struct wb35_descriptor *desc)
  49 {
  50         desc->InternalUsed = desc->buffer_start_index + desc->buffer_number;
  51         desc->InternalUsed %= MAX_DESCRIPTOR_BUFFER_INDEX;
  52         desc->buffer_address[desc->InternalUsed] = adapter->sMlmeFrame.pMMPDU;
  53         desc->buffer_size[desc->InternalUsed] = adapter->sMlmeFrame.len;
  54         desc->buffer_total_size += adapter->sMlmeFrame.len;
  55         desc->buffer_number++;
  56         desc->Type = adapter->sMlmeFrame.DataType;
  57 }
  58
  59 static void MLMEfreeMMPDUBuffer(struct wbsoft_priv *adapter, s8 *pData)
  60 {
  61         int i;
  62
  63         /* Reclaim the data buffer */
  64         for (i = 0; i < MAX_NUM_TX_MMPDU; i++) {
  65                 if (pData == (s8 *)&(adapter->sMlmeFrame.TxMMPDU[i]))
  66                         break;
  67         }
  68         if (adapter->sMlmeFrame.TxMMPDUInUse[i])
  69                 adapter->sMlmeFrame.TxMMPDUInUse[i] = false;
  70         else  {
  71                 /* Something wrong
  72                  PD43 Add debug code here??? */
  73         }
  74 }
  75
  76 void
  77 MLME_SendComplete(struct wbsoft_priv *adapter, u8 PacketID, unsigned char SendOK)
  78 {
  79         MLME_TXCALLBACK TxCallback;
  80
  81     /* Reclaim the data buffer */
  82         adapter->sMlmeFrame.len = 0;
  83         MLMEfreeMMPDUBuffer(adapter, adapter->sMlmeFrame.pMMPDU);
  84
  85
  86         TxCallback.bResult = MLME_SUCCESS;
  87
  88         /* Return resource */
  89         adapter->sMlmeFrame.IsInUsed = PACKET_FREE_TO_USE;
  90 }