#include "mds_f.h"
#include "mto.h"
#include "wbhal.h"
#include "wb35tx_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);
}
static void Mds_DurationSet(struct wbsoft_priv *adapter, struct wb35_descriptor *pDes, u8 *buffer)
{
struct T00_descriptor *pT00;
struct T01_descriptor *pT01;
u16 Duration, NextBodyLen, OffsetSize;
u8 Rate, i;
unsigned char CTS_on = false, RTS_on = false;
struct T00_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 = (struct T00_descriptor *)buffer;
pT01 = (struct T01_descriptor *)(buffer+4);
pNextT00 = (struct T00_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 = (struct T01_descriptor *)(buffer+4);
if (i != 1) /* The last fragment will not have the next fragment */
pNextT00 = (struct T00_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)
{
struct T00_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 = (struct T00_descriptor *)buffer;
while (SizeLeft) {
pT00 = (struct T00_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 = (struct T00_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 */
struct T00_descriptor *pT00;
struct T01_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 = (struct T00_descriptor *)TargetBuffer;
TargetBuffer += 4;
pT01 = (struct T01_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;
pr_debug("Tx rate =%x\n", ctmp1);
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 */
}
static void MLME_GetNextPacket(struct wbsoft_priv *adapter, struct wb35_descriptor *desc)
{
desc->InternalUsed = desc->buffer_start_index + desc->buffer_number;
desc->InternalUsed %= MAX_DESCRIPTOR_BUFFER_INDEX;
desc->buffer_address[desc->InternalUsed] = adapter->sMlmeFrame.pMMPDU;
desc->buffer_size[desc->InternalUsed] = adapter->sMlmeFrame.len;
desc->buffer_total_size += adapter->sMlmeFrame.len;
desc->buffer_number++;
desc->Type = adapter->sMlmeFrame.DataType;
}
static void MLMEfreeMMPDUBuffer(struct wbsoft_priv *adapter, s8 *pData)
{
int i;
/* Reclaim the data buffer */
for (i = 0; i < MAX_NUM_TX_MMPDU; i++) {
if (pData == (s8 *)&(adapter->sMlmeFrame.TxMMPDU[i]))
break;
}
if (adapter->sMlmeFrame.TxMMPDUInUse[i])
adapter->sMlmeFrame.TxMMPDUInUse[i] = false;
else {
/* Something wrong
PD43 Add debug code here??? */
}
}
static void MLME_SendComplete(struct wbsoft_priv *adapter, u8 PacketID, unsigned char SendOK)
{
/* Reclaim the data buffer */
adapter->sMlmeFrame.len = 0;
MLMEfreeMMPDUBuffer(adapter, adapter->sMlmeFrame.pMMPDU);
/* Return resource */
adapter->sMlmeFrame.IsInUsed = PACKET_FREE_TO_USE;
}
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 */
pr_debug("[Mds_Tx] Tx Owner is H/W.\n");
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 coming 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) {
pr_debug("35: EPA 4th frame detected. Size = %d\n", PacketSize);
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;
/* 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, struct T02_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;
pr_debug("dto_tx_retry_count =%d\n", pHwData->dto_tx_retry_count);
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));
}