Linux-2.6.33.2/drivers/staging/winbond/mds.c
#include "mds_f.h"
#include "mlmetxrx_f.h"
#include "mto.h"
#include "sysdef.h"
#include "wbhal_f.h"
#include "wblinux_f.h"
unsigned char
Mds_initial(struct wbsoft_priv * adapter)
{
struct wb35_mds *pMds = &adapter->Mds;
pMds->TxPause = false;
pMds->TxRTSThreshold = DEFAULT_RTSThreshold;
pMds->TxFragmentThreshold = DEFAULT_FRAGMENT_THRESHOLD;
return hal_get_tx_buffer( &adapter->sHwData, &pMds->pTxBuffer );
}
void
Mds_Destroy(struct wbsoft_priv * adapter)
{
}
static void Mds_DurationSet(struct wbsoft_priv *adapter, struct wb35_descriptor *pDes, u8 *buffer)
{
PT00_DESCRIPTOR pT00;
PT01_DESCRIPTOR pT01;
u16 Duration, NextBodyLen, OffsetSize;
u8 Rate, i;
unsigned char CTS_on = false, RTS_on = false;
PT00_DESCRIPTOR pNextT00;
u16 BodyLen = 0;
unsigned char boGroupAddr = false;
OffsetSize = pDes->FragmentThreshold + 32 + 3;
OffsetSize &= ~0x03;
Rate = pDes->TxRate >> 1;
if (!Rate)
Rate = 1;
pT00 = (PT00_DESCRIPTOR)buffer;
pT01 = (PT01_DESCRIPTOR)(buffer+4);
pNextT00 = (PT00_DESCRIPTOR)(buffer+OffsetSize);
if( buffer[ DOT_11_DA_OFFSET+8 ] & 0x1 ) // +8 for USB hdr
boGroupAddr = true;
//========================================
// Set RTS/CTS mechanism
//========================================
if (!boGroupAddr)
{
//NOTE : If the protection mode is enabled and the MSDU will be fragmented,
// the tx rates of MPDUs will all be DSSS rates. So it will not use
// CTS-to-self in this case. CTS-To-self will only be used when without
// fragmentation. -- 20050112
BodyLen = (u16)pT00->T00_frame_length; //include 802.11 header
BodyLen += 4; //CRC
if( BodyLen >= CURRENT_RTS_THRESHOLD )
RTS_on = true; // Using RTS
else
{
if( pT01->T01_modulation_type ) // Is using OFDM
{
if( CURRENT_PROTECT_MECHANISM ) // Is using protect
CTS_on = true; // Using CTS
}
}
}
if( RTS_on || CTS_on )
{
if( pT01->T01_modulation_type) // Is using OFDM
{
//CTS duration
// 2 SIFS + DATA transmit time + 1 ACK
// ACK Rate : 24 Mega bps
// ACK frame length = 14 bytes
Duration = 2*DEFAULT_SIFSTIME +
2*PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION +
((BodyLen*8 + 22 + Rate*4 - 1)/(Rate*4))*Tsym +
((112 + 22 + 95)/96)*Tsym;
}
else //DSSS
{
//CTS duration
// 2 SIFS + DATA transmit time + 1 ACK
// Rate : ?? Mega bps
// ACK frame length = 14 bytes
if( pT01->T01_plcp_header_length ) //long preamble
Duration = LONG_PREAMBLE_PLUS_PLCPHEADER_TIME*2;
else
Duration = SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME*2;
Duration += ( ((BodyLen + 14)*8 + Rate-1) / Rate +
DEFAULT_SIFSTIME*2 );
}
if( RTS_on )
{
if( pT01->T01_modulation_type ) // Is using OFDM
{
//CTS + 1 SIFS + CTS duration
//CTS Rate : 24 Mega bps
//CTS frame length = 14 bytes
Duration += (DEFAULT_SIFSTIME +
PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION +
((112 + 22 + 95)/96)*Tsym);
}
else
{
//CTS + 1 SIFS + CTS duration
//CTS Rate : ?? Mega bps
//CTS frame length = 14 bytes
if( pT01->T01_plcp_header_length ) //long preamble
Duration += LONG_PREAMBLE_PLUS_PLCPHEADER_TIME;
else
Duration += SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME;
Duration += ( ((112 + Rate-1) / Rate) + DEFAULT_SIFSTIME );
}
}
// Set the value into USB descriptor
pT01->T01_add_rts = RTS_on ? 1 : 0;
pT01->T01_add_cts = CTS_on ? 1 : 0;
pT01->T01_rts_cts_duration = Duration;
}
//=====================================
// Fill the more fragment descriptor
//=====================================
if( boGroupAddr )
Duration = 0;
else
{
for( i=pDes->FragmentCount-1; i>0; i-- )
{
NextBodyLen = (u16)pNextT00->T00_frame_length;
NextBodyLen += 4; //CRC
if( pT01->T01_modulation_type )
{
//OFDM
// data transmit time + 3 SIFS + 2 ACK
// Rate : ??Mega bps
// ACK frame length = 14 bytes, tx rate = 24M
Duration = PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION * 3;
Duration += (((NextBodyLen*8 + 22 + Rate*4 - 1)/(Rate*4)) * Tsym +
(((2*14)*8 + 22 + 95)/96)*Tsym +
DEFAULT_SIFSTIME*3);
}
else
{
//DSSS
// data transmit time + 2 ACK + 3 SIFS
// Rate : ??Mega bps
// ACK frame length = 14 bytes
//TODO :
if( pT01->T01_plcp_header_length ) //long preamble
Duration = LONG_PREAMBLE_PLUS_PLCPHEADER_TIME*3;
else
Duration = SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME*3;
Duration += ( ((NextBodyLen + (2*14))*8 + Rate-1) / Rate +
DEFAULT_SIFSTIME*3 );
}
((u16 *)buffer)[5] = cpu_to_le16(Duration);// 4 USHOR for skip 8B USB, 2USHORT=FC + Duration
//----20061009 add by anson's endian
pNextT00->value = cpu_to_le32(pNextT00->value);
pT01->value = cpu_to_le32( pT01->value );
//----end 20061009 add by anson's endian
buffer += OffsetSize;
pT01 = (PT01_DESCRIPTOR)(buffer+4);
if (i != 1) //The last fragment will not have the next fragment
pNextT00 = (PT00_DESCRIPTOR)(buffer+OffsetSize);
}
//=====================================
// Fill the last fragment descriptor
//=====================================
if( pT01->T01_modulation_type )
{
//OFDM
// 1 SIFS + 1 ACK
// Rate : 24 Mega bps
// ACK frame length = 14 bytes
Duration = PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION;
//The Tx rate of ACK use 24M
Duration += (((112 + 22 + 95)/96)*Tsym + DEFAULT_SIFSTIME );
}
else
{
// DSSS
// 1 ACK + 1 SIFS
// Rate : ?? Mega bps
// ACK frame length = 14 bytes(112 bits)
if( pT01->T01_plcp_header_length ) //long preamble
Duration = LONG_PREAMBLE_PLUS_PLCPHEADER_TIME;
else
Duration = SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME;
Duration += ( (112 + Rate-1)/Rate + DEFAULT_SIFSTIME );
}
}
((u16 *)buffer)[5] = cpu_to_le16(Duration);// 4 USHOR for skip 8B USB, 2USHORT=FC + Duration
pT00->value = cpu_to_le32(pT00->value);
pT01->value = cpu_to_le32(pT01->value);
//--end 20061009 add
}
// The function return the 4n size of usb pk
static u16 Mds_BodyCopy(struct wbsoft_priv *adapter, struct wb35_descriptor *pDes, u8 *TargetBuffer)
{
PT00_DESCRIPTOR pT00;
struct wb35_mds *pMds = &adapter->Mds;
u8 *buffer;
u8 *src_buffer;
u8 *pctmp;
u16 Size = 0;
u16 SizeLeft, CopySize, CopyLeft, stmp;
u8 buf_index, FragmentCount = 0;
// Copy fragment body
buffer = TargetBuffer; // shift 8B usb + 24B 802.11
SizeLeft = pDes->buffer_total_size;
buf_index = pDes->buffer_start_index;
pT00 = (PT00_DESCRIPTOR)buffer;
while (SizeLeft) {
pT00 = (PT00_DESCRIPTOR)buffer;
CopySize = SizeLeft;
if (SizeLeft > pDes->FragmentThreshold) {
CopySize = pDes->FragmentThreshold;
pT00->T00_frame_length = 24 + CopySize;//Set USB length
} else
pT00->T00_frame_length = 24 + SizeLeft;//Set USB length
SizeLeft -= CopySize;
// 1 Byte operation
pctmp = (u8 *)( buffer + 8 + DOT_11_SEQUENCE_OFFSET );
*pctmp &= 0xf0;
*pctmp |= FragmentCount;//931130.5.m
if( !FragmentCount )
pT00->T00_first_mpdu = 1;
buffer += 32; // 8B usb + 24B 802.11 header
Size += 32;
// Copy into buffer
stmp = CopySize + 3;
stmp &= ~0x03;//4n Alignment
Size += stmp;// Current 4n offset of mpdu
while (CopySize) {
// Copy body
src_buffer = pDes->buffer_address[buf_index];
CopyLeft = CopySize;
if (CopySize >= pDes->buffer_size[buf_index]) {
CopyLeft = pDes->buffer_size[buf_index];
// Get the next buffer of descriptor
buf_index++;
buf_index %= MAX_DESCRIPTOR_BUFFER_INDEX;
} else {
u8 *pctmp = pDes->buffer_address[buf_index];
pctmp += CopySize;
pDes->buffer_address[buf_index] = pctmp;
pDes->buffer_size[buf_index] -= CopySize;
}
memcpy(buffer, src_buffer, CopyLeft);
buffer += CopyLeft;
CopySize -= CopyLeft;
}
// 931130.5.n
if (pMds->MicAdd) {
if (!SizeLeft) {
pMds->MicWriteAddress[ pMds->MicWriteIndex ] = buffer - pMds->MicAdd;
pMds->MicWriteSize[ pMds->MicWriteIndex ] = pMds->MicAdd;
pMds->MicAdd = 0;
}
else if( SizeLeft < 8 ) //931130.5.p
{
pMds->MicAdd = SizeLeft;
pMds->MicWriteAddress[ pMds->MicWriteIndex ] = buffer - ( 8 - SizeLeft );
pMds->MicWriteSize[ pMds->MicWriteIndex ] = 8 - SizeLeft;
pMds->MicWriteIndex++;
}
}
// Does it need to generate the new header for next mpdu?
if (SizeLeft) {
buffer = TargetBuffer + Size; // Get the next 4n start address
memcpy( buffer, TargetBuffer, 32 );//Copy 8B USB +24B 802.11
pT00 = (PT00_DESCRIPTOR)buffer;
pT00->T00_first_mpdu = 0;
}
FragmentCount++;
}
pT00->T00_last_mpdu = 1;
pT00->T00_IsLastMpdu = 1;
buffer = (u8 *)pT00 + 8; // +8 for USB hdr
buffer[1] &= ~0x04; // Clear more frag bit of 802.11 frame control
pDes->FragmentCount = FragmentCount; // Update the correct fragment number
return Size;
}
static void Mds_HeaderCopy(struct wbsoft_priv * adapter, struct wb35_descriptor *pDes, u8 *TargetBuffer)
{
struct wb35_mds *pMds = &adapter->Mds;
u8 *src_buffer = pDes->buffer_address[0];//931130.5.g
PT00_DESCRIPTOR pT00;
PT01_DESCRIPTOR pT01;
u16 stmp;
u8 i, ctmp1, ctmp2, ctmpf;
u16 FragmentThreshold = CURRENT_FRAGMENT_THRESHOLD;
stmp = pDes->buffer_total_size;
//
// Set USB header 8 byte
//
pT00 = (PT00_DESCRIPTOR)TargetBuffer;
TargetBuffer += 4;
pT01 = (PT01_DESCRIPTOR)TargetBuffer;
TargetBuffer += 4;
pT00->value = 0;// Clear
pT01->value = 0;// Clear
pT00->T00_tx_packet_id = pDes->Descriptor_ID;// Set packet ID
pT00->T00_header_length = 24;// Set header length
pT01->T01_retry_abort_ebable = 1;//921013 931130.5.h
// Key ID setup
pT01->T01_wep_id = 0;
FragmentThreshold = DEFAULT_FRAGMENT_THRESHOLD; //Do not fragment
// Copy full data, the 1'st buffer contain all the data 931130.5.j
memcpy( TargetBuffer, src_buffer, DOT_11_MAC_HEADER_SIZE );// Copy header
pDes->buffer_address[0] = src_buffer + DOT_11_MAC_HEADER_SIZE;
pDes->buffer_total_size -= DOT_11_MAC_HEADER_SIZE;
pDes->buffer_size[0] = pDes->buffer_total_size;
// Set fragment threshold
FragmentThreshold -= (DOT_11_MAC_HEADER_SIZE + 4);
pDes->FragmentThreshold = FragmentThreshold;
// Set more frag bit
TargetBuffer[1] |= 0x04;// Set more frag bit
//
// Set tx rate
//
stmp = *(u16 *)(TargetBuffer+30); // 2n alignment address
//Use basic rate
ctmp1 = ctmpf = CURRENT_TX_RATE_FOR_MNG;
pDes->TxRate = ctmp1;
#ifdef _PE_TX_DUMP_
printk("Tx rate =%x\n", ctmp1);
#endif
pT01->T01_modulation_type = (ctmp1%3) ? 0 : 1;
for( i=0; i<2; i++ ) {
if( i == 1 )
ctmp1 = ctmpf;
pMds->TxRate[pDes->Descriptor_ID][i] = ctmp1; // backup the ta rate and fall back rate
if( ctmp1 == 108) ctmp2 = 7;
else if( ctmp1 == 96 ) ctmp2 = 6; // Rate convert for USB
else if( ctmp1 == 72 ) ctmp2 = 5;
else if( ctmp1 == 48 ) ctmp2 = 4;
else if( ctmp1 == 36 ) ctmp2 = 3;
else if( ctmp1 == 24 ) ctmp2 = 2;
else if( ctmp1 == 18 ) ctmp2 = 1;
else if( ctmp1 == 12 ) ctmp2 = 0;
else if( ctmp1 == 22 ) ctmp2 = 3;
else if( ctmp1 == 11 ) ctmp2 = 2;
else if( ctmp1 == 4 ) ctmp2 = 1;
else ctmp2 = 0; // if( ctmp1 == 2 ) or default
if( i == 0 )
pT01->T01_transmit_rate = ctmp2;
else
pT01->T01_fall_back_rate = ctmp2;
}
//
// Set preamble type
//
if ((pT01->T01_modulation_type == 0) && (pT01->T01_transmit_rate == 0)) // RATE_1M
pDes->PreambleMode = WLAN_PREAMBLE_TYPE_LONG;
else
pDes->PreambleMode = CURRENT_PREAMBLE_MODE;
pT01->T01_plcp_header_length = pDes->PreambleMode; // Set preamble
}
void
Mds_Tx(struct wbsoft_priv * adapter)
{
struct hw_data * pHwData = &adapter->sHwData;
struct wb35_mds *pMds = &adapter->Mds;
struct wb35_descriptor TxDes;
struct wb35_descriptor *pTxDes = &TxDes;
u8 *XmitBufAddress;
u16 XmitBufSize, PacketSize, stmp, CurrentSize, FragmentThreshold;
u8 FillIndex, TxDesIndex, FragmentCount, FillCount;
unsigned char BufferFilled = false;
if (pMds->TxPause)
return;
if (!hal_driver_init_OK(pHwData))
return;
//Only one thread can be run here
if (atomic_inc_return(&pMds->TxThreadCount) != 1)
goto cleanup;
// Start to fill the data
do {
FillIndex = pMds->TxFillIndex;
if (pMds->TxOwner[FillIndex]) { // Is owned by software 0:Yes 1:No
#ifdef _PE_TX_DUMP_
printk("[Mds_Tx] Tx Owner is H/W.\n");
#endif
break;
}
XmitBufAddress = pMds->pTxBuffer + (MAX_USB_TX_BUFFER * FillIndex); //Get buffer
XmitBufSize = 0;
FillCount = 0;
do {
PacketSize = adapter->sMlmeFrame.len;
if (!PacketSize)
break;
//For Check the buffer resource
FragmentThreshold = CURRENT_FRAGMENT_THRESHOLD;
//931130.5.b
FragmentCount = PacketSize/FragmentThreshold + 1;
stmp = PacketSize + FragmentCount*32 + 8;//931130.5.c 8:MIC
if ((XmitBufSize + stmp) >= MAX_USB_TX_BUFFER) {
printk("[Mds_Tx] Excess max tx buffer.\n");
break; // buffer is not enough
}
//
// Start transmitting
//
BufferFilled = true;
/* Leaves first u8 intact */
memset((u8 *)pTxDes + 1, 0, sizeof(struct wb35_descriptor) - 1);
TxDesIndex = pMds->TxDesIndex;//Get the current ID
pTxDes->Descriptor_ID = TxDesIndex;
pMds->TxDesFrom[ TxDesIndex ] = 2;//Storing the information of source comming from
pMds->TxDesIndex++;
pMds->TxDesIndex %= MAX_USB_TX_DESCRIPTOR;
MLME_GetNextPacket( adapter, pTxDes );
// Copy header. 8byte USB + 24byte 802.11Hdr. Set TxRate, Preamble type
Mds_HeaderCopy( adapter, pTxDes, XmitBufAddress );
// For speed up Key setting
if (pTxDes->EapFix) {
#ifdef _PE_TX_DUMP_
printk("35: EPA 4th frame detected. Size = %d\n", PacketSize);
#endif
pHwData->IsKeyPreSet = 1;
}
// Copy (fragment) frame body, and set USB, 802.11 hdr flag
CurrentSize = Mds_BodyCopy(adapter, pTxDes, XmitBufAddress);
// Set RTS/CTS and Normal duration field into buffer
Mds_DurationSet(adapter, pTxDes, XmitBufAddress);
//Shift to the next address
XmitBufSize += CurrentSize;
XmitBufAddress += CurrentSize;
#ifdef _IBSS_BEACON_SEQ_STICK_
if ((XmitBufAddress[ DOT_11_DA_OFFSET+8 ] & 0xfc) != MAC_SUBTYPE_MNGMNT_PROBE_REQUEST) // +8 for USB hdr
#endif
pMds->TxToggle = true;
// Get packet to transmit completed, 1:TESTSTA 2:MLME 3: Ndis data
MLME_SendComplete(adapter, 0, true);
// Software TSC count 20060214
pMds->TxTsc++;
if (pMds->TxTsc == 0)
pMds->TxTsc_2++;
FillCount++; // 20060928
} while (HAL_USB_MODE_BURST(pHwData)); // End of multiple MSDU copy loop. false = single true = multiple sending
// Move to the next one, if necessary
if (BufferFilled) {
// size setting
pMds->TxBufferSize[ FillIndex ] = XmitBufSize;
// 20060928 set Tx count
pMds->TxCountInBuffer[FillIndex] = FillCount;
// Set owner flag
pMds->TxOwner[FillIndex] = 1;
pMds->TxFillIndex++;
pMds->TxFillIndex %= MAX_USB_TX_BUFFER_NUMBER;
BufferFilled = false;
} else
break;
if (!PacketSize) // No more pk for transmitting
break;
} while(true);
//
// Start to send by lower module
//
if (!pHwData->IsKeyPreSet)
Wb35Tx_start(adapter);
cleanup:
atomic_dec(&pMds->TxThreadCount);
}
void
Mds_SendComplete(struct wbsoft_priv * adapter, PT02_DESCRIPTOR pT02)
{
struct wb35_mds *pMds = &adapter->Mds;
struct hw_data * pHwData = &adapter->sHwData;
u8 PacketId = (u8)pT02->T02_Tx_PktID;
unsigned char SendOK = true;
u8 RetryCount, TxRate;
if (pT02->T02_IgnoreResult) // Don't care the result
return;
if (pT02->T02_IsLastMpdu) {
//TODO: DTO -- get the retry count and fragment count
// Tx rate
TxRate = pMds->TxRate[ PacketId ][ 0 ];
RetryCount = (u8)pT02->T02_MPDU_Cnt;
if (pT02->value & FLAG_ERROR_TX_MASK) {
SendOK = false;
if (pT02->T02_transmit_abort || pT02->T02_out_of_MaxTxMSDULiftTime) {
//retry error
pHwData->dto_tx_retry_count += (RetryCount+1);
//[for tx debug]
if (RetryCount<7)
pHwData->tx_retry_count[RetryCount] += RetryCount;
else
pHwData->tx_retry_count[7] += RetryCount;
#ifdef _PE_STATE_DUMP_
printk("dto_tx_retry_count =%d\n", pHwData->dto_tx_retry_count);
#endif
MTO_SetTxCount(adapter, TxRate, RetryCount);
}
pHwData->dto_tx_frag_count += (RetryCount+1);
//[for tx debug]
if (pT02->T02_transmit_abort_due_to_TBTT)
pHwData->tx_TBTT_start_count++;
if (pT02->T02_transmit_without_encryption_due_to_wep_on_false)
pHwData->tx_WepOn_false_count++;
if (pT02->T02_discard_due_to_null_wep_key)
pHwData->tx_Null_key_count++;
} else {
if (pT02->T02_effective_transmission_rate)
pHwData->tx_ETR_count++;
MTO_SetTxCount(adapter, TxRate, RetryCount);
}
// Clear send result buffer
pMds->TxResult[ PacketId ] = 0;
} else
pMds->TxResult[ PacketId ] |= ((u16)(pT02->value & 0x0ffff));
}