// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
* All rights reserved.
*
* Purpose: handle WMAC/802.3/802.11 rx & tx functions
*
* Author: Lyndon Chen
*
* Date: May 20, 2003
*
* Functions:
* s_vGenerateTxParameter - Generate tx dma required parameter.
* vGenerateMACHeader - Translate 802.3 to 802.11 header
* cbGetFragCount - Calculate fragment number count
* csBeacon_xmit - beacon tx function
* csMgmt_xmit - management tx function
* s_cbFillTxBufHead - fulfill tx dma buffer header
* s_uGetDataDuration - get tx data required duration
* s_uFillDataHead- fulfill tx data duration header
* s_uGetRTSCTSDuration- get rtx/cts required duration
* get_rtscts_time- get rts/cts reserved time
* s_uGetTxRsvTime- get frame reserved time
* s_vFillCTSHead- fulfill CTS ctl header
* s_vFillFragParameter- Set fragment ctl parameter.
* s_vFillRTSHead- fulfill RTS ctl header
* s_vFillTxKey- fulfill tx encrypt key
* s_vSWencryption- Software encrypt header
* vDMA0_tx_80211- tx 802.11 frame via dma0
* vGenerateFIFOHeader- Generate tx FIFO ctl header
*
* Revision History:
*
*/
#include "device.h"
#include "rxtx.h"
#include "card.h"
#include "mac.h"
#include "baseband.h"
#include "rf.h"
/*--------------------- Static Definitions -------------------------*/
/*--------------------- Static Classes ----------------------------*/
/*--------------------- Static Variables --------------------------*/
/*--------------------- Static Functions --------------------------*/
/*--------------------- Static Definitions -------------------------*/
/* if packet size < 256 -> in-direct send
* vpacket size >= 256 -> direct send
*/
#define CRITICAL_PACKET_LEN 256
static const unsigned short time_stamp_off[2][MAX_RATE] = {
{384, 288, 226, 209, 54, 43, 37, 31, 28, 25, 24, 23}, /* Long Preamble */
{384, 192, 130, 113, 54, 43, 37, 31, 28, 25, 24, 23}, /* Short Preamble */
};
static const unsigned short fb_opt0[2][5] = {
{RATE_12M, RATE_18M, RATE_24M, RATE_36M, RATE_48M}, /* fallback_rate0 */
{RATE_12M, RATE_12M, RATE_18M, RATE_24M, RATE_36M}, /* fallback_rate1 */
};
static const unsigned short fb_opt1[2][5] = {
{RATE_12M, RATE_18M, RATE_24M, RATE_24M, RATE_36M}, /* fallback_rate0 */
{RATE_6M, RATE_6M, RATE_12M, RATE_12M, RATE_18M}, /* fallback_rate1 */
};
#define RTSDUR_BB 0
#define RTSDUR_BA 1
#define RTSDUR_AA 2
#define CTSDUR_BA 3
#define RTSDUR_BA_F0 4
#define RTSDUR_AA_F0 5
#define RTSDUR_BA_F1 6
#define RTSDUR_AA_F1 7
#define CTSDUR_BA_F0 8
#define CTSDUR_BA_F1 9
#define DATADUR_B 10
#define DATADUR_A 11
#define DATADUR_A_F0 12
#define DATADUR_A_F1 13
/*--------------------- Static Functions --------------------------*/
static
void
s_vFillRTSHead(
struct vnt_private *pDevice,
unsigned char byPktType,
void *pvRTS,
unsigned int cbFrameLength,
bool bNeedAck,
bool bDisCRC,
struct ieee80211_hdr *hdr,
unsigned short wCurrentRate,
unsigned char byFBOption
);
static
void
s_vGenerateTxParameter(
struct vnt_private *pDevice,
unsigned char byPktType,
struct vnt_tx_fifo_head *,
void *pvRrvTime,
void *pvRTS,
void *pvCTS,
unsigned int cbFrameSize,
bool bNeedACK,
unsigned int uDMAIdx,
void *psEthHeader,
unsigned short wCurrentRate
);
static unsigned int
s_cbFillTxBufHead(struct vnt_private *pDevice, unsigned char byPktType,
unsigned char *pbyTxBufferAddr,
unsigned int uDMAIdx, struct vnt_tx_desc *pHeadTD,
unsigned int uNodeIndex);
static
__le16
s_uFillDataHead(
struct vnt_private *pDevice,
unsigned char byPktType,
void *pTxDataHead,
unsigned int cbFrameLength,
unsigned int uDMAIdx,
bool bNeedAck,
unsigned int uFragIdx,
unsigned int cbLastFragmentSize,
unsigned int uMACfragNum,
unsigned char byFBOption,
unsigned short wCurrentRate,
bool is_pspoll
);
/*--------------------- Export Variables --------------------------*/
static __le16 vnt_time_stamp_off(struct vnt_private *priv, u16 rate)
{
return cpu_to_le16(time_stamp_off[priv->preamble_type % 2]
[rate % MAX_RATE]);
}
/* byPktType : PK_TYPE_11A 0
* PK_TYPE_11B 1
* PK_TYPE_11GB 2
* PK_TYPE_11GA 3
*/
static
unsigned int
s_uGetTxRsvTime(
struct vnt_private *pDevice,
unsigned char byPktType,
unsigned int cbFrameLength,
unsigned short wRate,
bool bNeedAck
)
{
unsigned int uDataTime, uAckTime;
uDataTime = bb_get_frame_time(pDevice->preamble_type, byPktType, cbFrameLength, wRate);
if (!bNeedAck)
return uDataTime;
/*
* CCK mode - 11b
* OFDM mode - 11g 2.4G & 11a 5G
*/
uAckTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14,
byPktType == PK_TYPE_11B ?
pDevice->byTopCCKBasicRate :
pDevice->byTopOFDMBasicRate);
return uDataTime + pDevice->uSIFS + uAckTime;
}
static __le16 vnt_rxtx_rsvtime_le16(struct vnt_private *priv, u8 pkt_type,
u32 frame_length, u16 rate, bool need_ack)
{
return cpu_to_le16((u16)s_uGetTxRsvTime(priv, pkt_type,
frame_length, rate, need_ack));
}
/* byFreqType: 0=>5GHZ 1=>2.4GHZ */
static __le16 get_rtscts_time(struct vnt_private *priv,
unsigned char rts_rsvtype,
unsigned char pkt_type,
unsigned int frame_length,
unsigned short current_rate)
{
unsigned int rrv_time = 0;
unsigned int rts_time = 0;
unsigned int cts_time = 0;
unsigned int ack_time = 0;
unsigned int data_time = 0;
data_time = bb_get_frame_time(priv->preamble_type, pkt_type, frame_length, current_rate);
if (rts_rsvtype == 0) { /* RTSTxRrvTime_bb */
rts_time = bb_get_frame_time(priv->preamble_type, pkt_type, 20, priv->byTopCCKBasicRate);
ack_time = bb_get_frame_time(priv->preamble_type, pkt_type, 14, priv->byTopCCKBasicRate);
cts_time = ack_time;
} else if (rts_rsvtype == 1) { /* RTSTxRrvTime_ba, only in 2.4GHZ */
rts_time = bb_get_frame_time(priv->preamble_type, pkt_type, 20, priv->byTopCCKBasicRate);
cts_time = bb_get_frame_time(priv->preamble_type, pkt_type, 14, priv->byTopCCKBasicRate);
ack_time = bb_get_frame_time(priv->preamble_type, pkt_type, 14, priv->byTopOFDMBasicRate);
} else if (rts_rsvtype == 2) { /* RTSTxRrvTime_aa */
rts_time = bb_get_frame_time(priv->preamble_type, pkt_type, 20, priv->byTopOFDMBasicRate);
ack_time = bb_get_frame_time(priv->preamble_type, pkt_type, 14, priv->byTopOFDMBasicRate);
cts_time = ack_time;
} else if (rts_rsvtype == 3) { /* CTSTxRrvTime_ba, only in 2.4GHZ */
cts_time = bb_get_frame_time(priv->preamble_type, pkt_type, 14, priv->byTopCCKBasicRate);
ack_time = bb_get_frame_time(priv->preamble_type, pkt_type, 14, priv->byTopOFDMBasicRate);
rrv_time = cts_time + ack_time + data_time + 2 * priv->uSIFS;
return cpu_to_le16((u16)rrv_time);
}
/* RTSRrvTime */
rrv_time = rts_time + cts_time + ack_time + data_time + 3 * priv->uSIFS;
return cpu_to_le16((u16)rrv_time);
}
/* byFreqType 0: 5GHz, 1:2.4Ghz */
static
unsigned int
s_uGetDataDuration(
struct vnt_private *pDevice,
unsigned char byDurType,
unsigned int cbFrameLength,
unsigned char byPktType,
unsigned short wRate,
bool bNeedAck,
unsigned int uFragIdx,
unsigned int cbLastFragmentSize,
unsigned int uMACfragNum,
unsigned char byFBOption
)
{
bool bLastFrag = false;
unsigned int uAckTime = 0, uNextPktTime = 0, len;
if (uFragIdx == (uMACfragNum - 1))
bLastFrag = true;
if (uFragIdx == (uMACfragNum - 2))
len = cbLastFragmentSize;
else
len = cbFrameLength;
switch (byDurType) {
case DATADUR_B: /* DATADUR_B */
if (bNeedAck) {
uAckTime = bb_get_frame_time(pDevice->preamble_type,
byPktType, 14,
pDevice->byTopCCKBasicRate);
}
/* Non Frag or Last Frag */
if ((uMACfragNum == 1) || bLastFrag) {
if (!bNeedAck)
return 0;
} else {
/* First Frag or Mid Frag */
uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType,
len, wRate, bNeedAck);
}
return pDevice->uSIFS + uAckTime + uNextPktTime;
case DATADUR_A: /* DATADUR_A */
if (bNeedAck) {
uAckTime = bb_get_frame_time(pDevice->preamble_type,
byPktType, 14,
pDevice->byTopOFDMBasicRate);
}
/* Non Frag or Last Frag */
if ((uMACfragNum == 1) || bLastFrag) {
if (!bNeedAck)
return 0;
} else {
/* First Frag or Mid Frag */
uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType,
len, wRate, bNeedAck);
}
return pDevice->uSIFS + uAckTime + uNextPktTime;
case DATADUR_A_F0: /* DATADUR_A_F0 */
case DATADUR_A_F1: /* DATADUR_A_F1 */
if (bNeedAck) {
uAckTime = bb_get_frame_time(pDevice->preamble_type,
byPktType, 14,
pDevice->byTopOFDMBasicRate);
}
/* Non Frag or Last Frag */
if ((uMACfragNum == 1) || bLastFrag) {
if (!bNeedAck)
return 0;
} else {
/* First Frag or Mid Frag */
if (wRate < RATE_18M)
wRate = RATE_18M;
else if (wRate > RATE_54M)
wRate = RATE_54M;
wRate -= RATE_18M;
if (byFBOption == AUTO_FB_0)
wRate = fb_opt0[FB_RATE0][wRate];
else
wRate = fb_opt1[FB_RATE0][wRate];
uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType,
len, wRate, bNeedAck);
}
return pDevice->uSIFS + uAckTime + uNextPktTime;
default:
break;
}
return 0;
}
/* byFreqType: 0=>5GHZ 1=>2.4GHZ */
static
__le16
s_uGetRTSCTSDuration(
struct vnt_private *pDevice,
unsigned char byDurType,
unsigned int cbFrameLength,
unsigned char byPktType,
unsigned short wRate,
bool bNeedAck,
unsigned char byFBOption
)
{
unsigned int uCTSTime = 0, uDurTime = 0;
switch (byDurType) {
case RTSDUR_BB: /* RTSDuration_bb */
uCTSTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14, pDevice->byTopCCKBasicRate);
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wRate, bNeedAck);
break;
case RTSDUR_BA: /* RTSDuration_ba */
uCTSTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14, pDevice->byTopCCKBasicRate);
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wRate, bNeedAck);
break;
case RTSDUR_AA: /* RTSDuration_aa */
uCTSTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14, pDevice->byTopOFDMBasicRate);
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wRate, bNeedAck);
break;
case CTSDUR_BA: /* CTSDuration_ba */
uDurTime = pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wRate, bNeedAck);
break;
case RTSDUR_BA_F0: /* RTSDuration_ba_f0 */
uCTSTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14, pDevice->byTopCCKBasicRate);
if ((byFBOption == AUTO_FB_0) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt0[FB_RATE0][wRate - RATE_18M], bNeedAck);
else if ((byFBOption == AUTO_FB_1) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt1[FB_RATE0][wRate - RATE_18M], bNeedAck);
break;
case RTSDUR_AA_F0: /* RTSDuration_aa_f0 */
uCTSTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14, pDevice->byTopOFDMBasicRate);
if ((byFBOption == AUTO_FB_0) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt0[FB_RATE0][wRate - RATE_18M], bNeedAck);
else if ((byFBOption == AUTO_FB_1) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt1[FB_RATE0][wRate - RATE_18M], bNeedAck);
break;
case RTSDUR_BA_F1: /* RTSDuration_ba_f1 */
uCTSTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14, pDevice->byTopCCKBasicRate);
if ((byFBOption == AUTO_FB_0) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt0[FB_RATE1][wRate - RATE_18M], bNeedAck);
else if ((byFBOption == AUTO_FB_1) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt1[FB_RATE1][wRate - RATE_18M], bNeedAck);
break;
case RTSDUR_AA_F1: /* RTSDuration_aa_f1 */
uCTSTime = bb_get_frame_time(pDevice->preamble_type, byPktType, 14, pDevice->byTopOFDMBasicRate);
if ((byFBOption == AUTO_FB_0) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt0[FB_RATE1][wRate - RATE_18M], bNeedAck);
else if ((byFBOption == AUTO_FB_1) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = uCTSTime + 2 * pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt1[FB_RATE1][wRate - RATE_18M], bNeedAck);
break;
case CTSDUR_BA_F0: /* CTSDuration_ba_f0 */
if ((byFBOption == AUTO_FB_0) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt0[FB_RATE0][wRate - RATE_18M], bNeedAck);
else if ((byFBOption == AUTO_FB_1) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt1[FB_RATE0][wRate - RATE_18M], bNeedAck);
break;
case CTSDUR_BA_F1: /* CTSDuration_ba_f1 */
if ((byFBOption == AUTO_FB_0) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt0[FB_RATE1][wRate - RATE_18M], bNeedAck);
else if ((byFBOption == AUTO_FB_1) && (wRate >= RATE_18M) && (wRate <= RATE_54M))
uDurTime = pDevice->uSIFS + s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, fb_opt1[FB_RATE1][wRate - RATE_18M], bNeedAck);
break;
default:
break;
}
return cpu_to_le16((u16)uDurTime);
}
static
__le16
s_uFillDataHead(
struct vnt_private *pDevice,
unsigned char byPktType,
void *pTxDataHead,
unsigned int cbFrameLength,
unsigned int uDMAIdx,
bool bNeedAck,
unsigned int uFragIdx,
unsigned int cbLastFragmentSize,
unsigned int uMACfragNum,
unsigned char byFBOption,
unsigned short wCurrentRate,
bool is_pspoll
)
{
struct vnt_tx_datahead_ab *buf = pTxDataHead;
if (!pTxDataHead)
return 0;
if (byPktType == PK_TYPE_11GB || byPktType == PK_TYPE_11GA) {
/* Auto Fallback */
struct vnt_tx_datahead_g_fb *buf = pTxDataHead;
if (byFBOption == AUTO_FB_NONE) {
struct vnt_tx_datahead_g *buf = pTxDataHead;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, cbFrameLength, wCurrentRate,
byPktType, &buf->a);
vnt_get_phy_field(pDevice, cbFrameLength,
pDevice->byTopCCKBasicRate,
PK_TYPE_11B, &buf->b);
if (is_pspoll) {
__le16 dur = cpu_to_le16(pDevice->current_aid | BIT(14) | BIT(15));
buf->duration_a = dur;
buf->duration_b = dur;
} else {
/* Get Duration and TimeStamp */
buf->duration_a =
cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A, cbFrameLength,
byPktType, wCurrentRate, bNeedAck, uFragIdx,
cbLastFragmentSize, uMACfragNum,
byFBOption));
buf->duration_b =
cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_B, cbFrameLength,
PK_TYPE_11B, pDevice->byTopCCKBasicRate,
bNeedAck, uFragIdx, cbLastFragmentSize,
uMACfragNum, byFBOption));
}
buf->time_stamp_off_a = vnt_time_stamp_off(pDevice, wCurrentRate);
buf->time_stamp_off_b = vnt_time_stamp_off(pDevice, pDevice->byTopCCKBasicRate);
return buf->duration_a;
}
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, cbFrameLength, wCurrentRate,
byPktType, &buf->a);
vnt_get_phy_field(pDevice, cbFrameLength,
pDevice->byTopCCKBasicRate,
PK_TYPE_11B, &buf->b);
/* Get Duration and TimeStamp */
buf->duration_a = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
buf->duration_b = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_B, cbFrameLength, PK_TYPE_11B,
pDevice->byTopCCKBasicRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
buf->duration_a_f0 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F0, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
buf->duration_a_f1 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F1, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
buf->time_stamp_off_a = vnt_time_stamp_off(pDevice, wCurrentRate);
buf->time_stamp_off_b = vnt_time_stamp_off(pDevice, pDevice->byTopCCKBasicRate);
return buf->duration_a;
/* if (byFBOption == AUTO_FB_NONE) */
} else if (byPktType == PK_TYPE_11A) {
struct vnt_tx_datahead_ab *buf = pTxDataHead;
if (byFBOption != AUTO_FB_NONE) {
/* Auto Fallback */
struct vnt_tx_datahead_a_fb *buf = pTxDataHead;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, cbFrameLength, wCurrentRate,
byPktType, &buf->a);
/* Get Duration and TimeStampOff */
buf->duration = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
buf->duration_f0 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F0, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
buf->duration_f1 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F1, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
buf->time_stamp_off = vnt_time_stamp_off(pDevice, wCurrentRate);
return buf->duration;
}
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, cbFrameLength, wCurrentRate,
byPktType, &buf->ab);
if (is_pspoll) {
__le16 dur = cpu_to_le16(pDevice->current_aid | BIT(14) | BIT(15));
buf->duration = dur;
} else {
/* Get Duration and TimeStampOff */
buf->duration =
cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx,
cbLastFragmentSize, uMACfragNum,
byFBOption));
}
buf->time_stamp_off = vnt_time_stamp_off(pDevice, wCurrentRate);
return buf->duration;
}
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, cbFrameLength, wCurrentRate,
byPktType, &buf->ab);
if (is_pspoll) {
__le16 dur = cpu_to_le16(pDevice->current_aid | BIT(14) | BIT(15));
buf->duration = dur;
} else {
/* Get Duration and TimeStampOff */
buf->duration =
cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_B, cbFrameLength, byPktType,
wCurrentRate, bNeedAck, uFragIdx,
cbLastFragmentSize, uMACfragNum,
byFBOption));
}
buf->time_stamp_off = vnt_time_stamp_off(pDevice, wCurrentRate);
return buf->duration;
}
static
void
s_vFillRTSHead(
struct vnt_private *pDevice,
unsigned char byPktType,
void *pvRTS,
unsigned int cbFrameLength,
bool bNeedAck,
bool bDisCRC,
struct ieee80211_hdr *hdr,
unsigned short wCurrentRate,
unsigned char byFBOption
)
{
unsigned int uRTSFrameLen = 20;
if (!pvRTS)
return;
if (bDisCRC) {
/* When CRCDIS bit is on, H/W forgot to generate FCS for
* RTS frame, in this case we need to decrease its length by 4.
*/
uRTSFrameLen -= 4;
}
/* Note: So far RTSHead doesn't appear in ATIM & Beacom DMA,
* so we don't need to take them into account.
* Otherwise, we need to modify codes for them.
*/
if (byPktType == PK_TYPE_11GB || byPktType == PK_TYPE_11GA) {
if (byFBOption == AUTO_FB_NONE) {
struct vnt_rts_g *buf = pvRTS;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, uRTSFrameLen,
pDevice->byTopCCKBasicRate,
PK_TYPE_11B, &buf->b);
vnt_get_phy_field(pDevice, uRTSFrameLen,
pDevice->byTopOFDMBasicRate,
byPktType, &buf->a);
/* Get Duration */
buf->duration_bb =
s_uGetRTSCTSDuration(pDevice, RTSDUR_BB,
cbFrameLength, PK_TYPE_11B,
pDevice->byTopCCKBasicRate,
bNeedAck, byFBOption);
buf->duration_aa =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->duration_ba =
s_uGetRTSCTSDuration(pDevice, RTSDUR_BA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->data.duration = buf->duration_aa;
/* Get RTS Frame body */
buf->data.frame_control =
cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_RTS);
ether_addr_copy(buf->data.ra, hdr->addr1);
ether_addr_copy(buf->data.ta, hdr->addr2);
} else {
struct vnt_rts_g_fb *buf = pvRTS;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, uRTSFrameLen,
pDevice->byTopCCKBasicRate,
PK_TYPE_11B, &buf->b);
vnt_get_phy_field(pDevice, uRTSFrameLen,
pDevice->byTopOFDMBasicRate,
byPktType, &buf->a);
/* Get Duration */
buf->duration_bb =
s_uGetRTSCTSDuration(pDevice, RTSDUR_BB,
cbFrameLength, PK_TYPE_11B,
pDevice->byTopCCKBasicRate,
bNeedAck, byFBOption);
buf->duration_aa =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->duration_ba =
s_uGetRTSCTSDuration(pDevice, RTSDUR_BA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->rts_duration_ba_f0 =
s_uGetRTSCTSDuration(pDevice, RTSDUR_BA_F0,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->rts_duration_aa_f0 =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F0,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->rts_duration_ba_f1 =
s_uGetRTSCTSDuration(pDevice, RTSDUR_BA_F1,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->rts_duration_aa_f1 =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F1,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->data.duration = buf->duration_aa;
/* Get RTS Frame body */
buf->data.frame_control =
cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_RTS);
ether_addr_copy(buf->data.ra, hdr->addr1);
ether_addr_copy(buf->data.ta, hdr->addr2);
} /* if (byFBOption == AUTO_FB_NONE) */
} else if (byPktType == PK_TYPE_11A) {
if (byFBOption == AUTO_FB_NONE) {
struct vnt_rts_ab *buf = pvRTS;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, uRTSFrameLen,
pDevice->byTopOFDMBasicRate,
byPktType, &buf->ab);
/* Get Duration */
buf->duration =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->data.duration = buf->duration;
/* Get RTS Frame body */
buf->data.frame_control =
cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_RTS);
ether_addr_copy(buf->data.ra, hdr->addr1);
ether_addr_copy(buf->data.ta, hdr->addr2);
} else {
struct vnt_rts_a_fb *buf = pvRTS;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, uRTSFrameLen,
pDevice->byTopOFDMBasicRate,
byPktType, &buf->a);
/* Get Duration */
buf->duration =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->rts_duration_f0 =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F0,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->rts_duration_f1 =
s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F1,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
buf->data.duration = buf->duration;
/* Get RTS Frame body */
buf->data.frame_control =
cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_RTS);
ether_addr_copy(buf->data.ra, hdr->addr1);
ether_addr_copy(buf->data.ta, hdr->addr2);
}
} else if (byPktType == PK_TYPE_11B) {
struct vnt_rts_ab *buf = pvRTS;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, uRTSFrameLen,
pDevice->byTopCCKBasicRate,
PK_TYPE_11B, &buf->ab);
/* Get Duration */
buf->duration =
s_uGetRTSCTSDuration(pDevice, RTSDUR_BB, cbFrameLength,
byPktType, wCurrentRate, bNeedAck,
byFBOption);
buf->data.duration = buf->duration;
/* Get RTS Frame body */
buf->data.frame_control =
cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
ether_addr_copy(buf->data.ra, hdr->addr1);
ether_addr_copy(buf->data.ta, hdr->addr2);
}
}
static
void
s_vFillCTSHead(
struct vnt_private *pDevice,
unsigned int uDMAIdx,
unsigned char byPktType,
void *pvCTS,
unsigned int cbFrameLength,
bool bNeedAck,
bool bDisCRC,
unsigned short wCurrentRate,
unsigned char byFBOption
)
{
unsigned int uCTSFrameLen = 14;
if (!pvCTS)
return;
if (bDisCRC) {
/* When CRCDIS bit is on, H/W forgot to generate FCS for
* CTS frame, in this case we need to decrease its length by 4.
*/
uCTSFrameLen -= 4;
}
if (byPktType == PK_TYPE_11GB || byPktType == PK_TYPE_11GA) {
if (byFBOption != AUTO_FB_NONE && uDMAIdx != TYPE_ATIMDMA && uDMAIdx != TYPE_BEACONDMA) {
/* Auto Fall back */
struct vnt_cts_fb *buf = pvCTS;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, uCTSFrameLen,
pDevice->byTopCCKBasicRate,
PK_TYPE_11B, &buf->b);
buf->duration_ba =
s_uGetRTSCTSDuration(pDevice, CTSDUR_BA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
/* Get CTSDuration_ba_f0 */
buf->cts_duration_ba_f0 =
s_uGetRTSCTSDuration(pDevice, CTSDUR_BA_F0,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
/* Get CTSDuration_ba_f1 */
buf->cts_duration_ba_f1 =
s_uGetRTSCTSDuration(pDevice, CTSDUR_BA_F1,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
/* Get CTS Frame body */
buf->data.duration = buf->duration_ba;
buf->data.frame_control =
cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_CTS);
buf->reserved2 = 0x0;
ether_addr_copy(buf->data.ra,
pDevice->abyCurrentNetAddr);
} else { /* if (byFBOption != AUTO_FB_NONE && uDMAIdx != TYPE_ATIMDMA && uDMAIdx != TYPE_BEACONDMA) */
struct vnt_cts *buf = pvCTS;
/* Get SignalField, ServiceField & Length */
vnt_get_phy_field(pDevice, uCTSFrameLen,
pDevice->byTopCCKBasicRate,
PK_TYPE_11B, &buf->b);
/* Get CTSDuration_ba */
buf->duration_ba =
s_uGetRTSCTSDuration(pDevice, CTSDUR_BA,
cbFrameLength, byPktType,
wCurrentRate, bNeedAck,
byFBOption);
/* Get CTS Frame body */
buf->data.duration = buf->duration_ba;
buf->data.frame_control =
cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_CTS);
buf->reserved2 = 0x0;
ether_addr_copy(buf->data.ra,
pDevice->abyCurrentNetAddr);
}
}
}
/*
*
* Description:
* Generate FIFO control for MAC & Baseband controller
*
* Parameters:
* In:
* pDevice - Pointer to adapter
* pTxDataHead - Transmit Data Buffer
* pTxBufHead - pTxBufHead
* pvRrvTime - pvRrvTime
* pvRTS - RTS Buffer
* pCTS - CTS Buffer
* cbFrameSize - Transmit Data Length (Hdr+Payload+FCS)
* bNeedACK - If need ACK
* uDescIdx - Desc Index
* Out:
* none
*
* Return Value: none
*
-
* unsigned int cbFrameSize, Hdr+Payload+FCS
*/
static
void
s_vGenerateTxParameter(
struct vnt_private *pDevice,
unsigned char byPktType,
struct vnt_tx_fifo_head *tx_buffer_head,
void *pvRrvTime,
void *pvRTS,
void *pvCTS,
unsigned int cbFrameSize,
bool bNeedACK,
unsigned int uDMAIdx,
void *psEthHeader,
unsigned short wCurrentRate
)
{
u16 fifo_ctl = le16_to_cpu(tx_buffer_head->fifo_ctl);
bool bDisCRC = false;
unsigned char byFBOption = AUTO_FB_NONE;
tx_buffer_head->current_rate = cpu_to_le16(wCurrentRate);
if (fifo_ctl & FIFOCTL_CRCDIS)
bDisCRC = true;
if (fifo_ctl & FIFOCTL_AUTO_FB_0)
byFBOption = AUTO_FB_0;
else if (fifo_ctl & FIFOCTL_AUTO_FB_1)
byFBOption = AUTO_FB_1;
if (!pvRrvTime)
return;
if (byPktType == PK_TYPE_11GB || byPktType == PK_TYPE_11GA) {
if (pvRTS) { /* RTS_need */
/* Fill RsvTime */
struct vnt_rrv_time_rts *buf = pvRrvTime;
buf->rts_rrv_time_aa = get_rtscts_time(pDevice, 2, byPktType, cbFrameSize, wCurrentRate);
buf->rts_rrv_time_ba = get_rtscts_time(pDevice, 1, byPktType, cbFrameSize, wCurrentRate);
buf->rts_rrv_time_bb = get_rtscts_time(pDevice, 0, byPktType, cbFrameSize, wCurrentRate);
buf->rrv_time_a = vnt_rxtx_rsvtime_le16(pDevice, byPktType, cbFrameSize, wCurrentRate, bNeedACK);
buf->rrv_time_b = vnt_rxtx_rsvtime_le16(pDevice, PK_TYPE_11B, cbFrameSize, pDevice->byTopCCKBasicRate, bNeedACK);
s_vFillRTSHead(pDevice, byPktType, pvRTS, cbFrameSize, bNeedACK, bDisCRC, psEthHeader, wCurrentRate, byFBOption);
} else {/* RTS_needless, PCF mode */
struct vnt_rrv_time_cts *buf = pvRrvTime;
buf->rrv_time_a = vnt_rxtx_rsvtime_le16(pDevice, byPktType, cbFrameSize, wCurrentRate, bNeedACK);
buf->rrv_time_b = vnt_rxtx_rsvtime_le16(pDevice, PK_TYPE_11B, cbFrameSize, pDevice->byTopCCKBasicRate, bNeedACK);
buf->cts_rrv_time_ba = get_rtscts_time(pDevice, 3, byPktType, cbFrameSize, wCurrentRate);
/* Fill CTS */
s_vFillCTSHead(pDevice, uDMAIdx, byPktType, pvCTS, cbFrameSize, bNeedACK, bDisCRC, wCurrentRate, byFBOption);
}
} else if (byPktType == PK_TYPE_11A) {
if (pvRTS) {/* RTS_need, non PCF mode */
struct vnt_rrv_time_ab *buf = pvRrvTime;
buf->rts_rrv_time = get_rtscts_time(pDevice, 2, byPktType, cbFrameSize, wCurrentRate);
buf->rrv_time = vnt_rxtx_rsvtime_le16(pDevice, byPktType, cbFrameSize, wCurrentRate, bNeedACK);
/* Fill RTS */
s_vFillRTSHead(pDevice, byPktType, pvRTS, cbFrameSize, bNeedACK, bDisCRC, psEthHeader, wCurrentRate, byFBOption);
} else if (!pvRTS) {/* RTS_needless, non PCF mode */
struct vnt_rrv_time_ab *buf = pvRrvTime;
buf->rrv_time = vnt_rxtx_rsvtime_le16(pDevice, PK_TYPE_11A, cbFrameSize, wCurrentRate, bNeedACK);
}
} else if (byPktType == PK_TYPE_11B) {
if (pvRTS) {/* RTS_need, non PCF mode */
struct vnt_rrv_time_ab *buf = pvRrvTime;
buf->rts_rrv_time = get_rtscts_time(pDevice, 0, byPktType, cbFrameSize, wCurrentRate);
buf->rrv_time = vnt_rxtx_rsvtime_le16(pDevice, PK_TYPE_11B, cbFrameSize, wCurrentRate, bNeedACK);
/* Fill RTS */
s_vFillRTSHead(pDevice, byPktType, pvRTS, cbFrameSize, bNeedACK, bDisCRC, psEthHeader, wCurrentRate, byFBOption);
} else { /* RTS_needless, non PCF mode */
struct vnt_rrv_time_ab *buf = pvRrvTime;
buf->rrv_time = vnt_rxtx_rsvtime_le16(pDevice, PK_TYPE_11B, cbFrameSize, wCurrentRate, bNeedACK);
}
}
}
static unsigned int
s_cbFillTxBufHead(struct vnt_private *pDevice, unsigned char byPktType,
unsigned char *pbyTxBufferAddr,
unsigned int uDMAIdx, struct vnt_tx_desc *pHeadTD,
unsigned int is_pspoll)
{
struct vnt_td_info *td_info = pHeadTD->td_info;
struct sk_buff *skb = td_info->skb;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct vnt_tx_fifo_head *tx_buffer_head =
(struct vnt_tx_fifo_head *)td_info->buf;
u16 fifo_ctl = le16_to_cpu(tx_buffer_head->fifo_ctl);
unsigned int cbFrameSize;
__le16 uDuration;
unsigned char *pbyBuffer;
unsigned int uLength = 0;
unsigned int cbMICHDR = 0;
unsigned int uMACfragNum = 1;
unsigned int uPadding = 0;
unsigned int cbReqCount = 0;
bool bNeedACK = (bool)(fifo_ctl & FIFOCTL_NEEDACK);
bool bRTS = (bool)(fifo_ctl & FIFOCTL_RTS);
struct vnt_tx_desc *ptdCurr;
unsigned int cbHeaderLength = 0;
void *pvRrvTime = NULL;
struct vnt_mic_hdr *pMICHDR = NULL;
void *pvRTS = NULL;
void *pvCTS = NULL;
void *pvTxDataHd = NULL;
unsigned short wTxBufSize; /* FFinfo size */
unsigned char byFBOption = AUTO_FB_NONE;
cbFrameSize = skb->len + 4;
if (info->control.hw_key) {
switch (info->control.hw_key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
cbMICHDR = sizeof(struct vnt_mic_hdr);
break;
default:
break;
}
cbFrameSize += info->control.hw_key->icv_len;
if (pDevice->local_id > REV_ID_VT3253_A1) {
/* MAC Header should be padding 0 to DW alignment. */
uPadding = 4 - (ieee80211_get_hdrlen_from_skb(skb) % 4);
uPadding %= 4;
}
}
/*
* Use for AUTO FALL BACK
*/
if (fifo_ctl & FIFOCTL_AUTO_FB_0)
byFBOption = AUTO_FB_0;
else if (fifo_ctl & FIFOCTL_AUTO_FB_1)
byFBOption = AUTO_FB_1;
/* Set RrvTime/RTS/CTS Buffer */
wTxBufSize = sizeof(struct vnt_tx_fifo_head);
if (byPktType == PK_TYPE_11GB || byPktType == PK_TYPE_11GA) {/* 802.11g packet */
if (byFBOption == AUTO_FB_NONE) {
if (bRTS) {/* RTS_need */
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_rts));
pvRTS = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_rts) + cbMICHDR);
pvCTS = NULL;
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_rts) +
cbMICHDR + sizeof(struct vnt_rts_g));
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_rts) +
cbMICHDR + sizeof(struct vnt_rts_g) +
sizeof(struct vnt_tx_datahead_g);
} else { /* RTS_needless */
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_cts));
pvRTS = NULL;
pvCTS = (void *) (pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_cts) + cbMICHDR);
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize +
sizeof(struct vnt_rrv_time_cts) + cbMICHDR + sizeof(struct vnt_cts));
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_cts) +
cbMICHDR + sizeof(struct vnt_cts) + sizeof(struct vnt_tx_datahead_g);
}
} else {
/* Auto Fall Back */
if (bRTS) {/* RTS_need */
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_rts));
pvRTS = (void *) (pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_rts) + cbMICHDR);
pvCTS = NULL;
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_rts) +
cbMICHDR + sizeof(struct vnt_rts_g_fb));
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_rts) +
cbMICHDR + sizeof(struct vnt_rts_g_fb) + sizeof(struct vnt_tx_datahead_g_fb);
} else { /* RTS_needless */
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_cts));
pvRTS = NULL;
pvCTS = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_cts) + cbMICHDR);
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_cts) +
cbMICHDR + sizeof(struct vnt_cts_fb));
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_cts) +
cbMICHDR + sizeof(struct vnt_cts_fb) + sizeof(struct vnt_tx_datahead_g_fb);
}
} /* Auto Fall Back */
} else {/* 802.11a/b packet */
if (byFBOption == AUTO_FB_NONE) {
if (bRTS) {
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab));
pvRTS = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab) + cbMICHDR);
pvCTS = NULL;
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize +
sizeof(struct vnt_rrv_time_ab) + cbMICHDR + sizeof(struct vnt_rts_ab));
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_ab) +
cbMICHDR + sizeof(struct vnt_rts_ab) + sizeof(struct vnt_tx_datahead_ab);
} else { /* RTS_needless, need MICHDR */
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab));
pvRTS = NULL;
pvCTS = NULL;
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab) + cbMICHDR);
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_ab) +
cbMICHDR + sizeof(struct vnt_tx_datahead_ab);
}
} else {
/* Auto Fall Back */
if (bRTS) { /* RTS_need */
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab));
pvRTS = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab) + cbMICHDR);
pvCTS = NULL;
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize +
sizeof(struct vnt_rrv_time_ab) + cbMICHDR + sizeof(struct vnt_rts_a_fb));
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_ab) +
cbMICHDR + sizeof(struct vnt_rts_a_fb) + sizeof(struct vnt_tx_datahead_a_fb);
} else { /* RTS_needless */
pvRrvTime = (void *)(pbyTxBufferAddr + wTxBufSize);
pMICHDR = (struct vnt_mic_hdr *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab));
pvRTS = NULL;
pvCTS = NULL;
pvTxDataHd = (void *)(pbyTxBufferAddr + wTxBufSize + sizeof(struct vnt_rrv_time_ab) + cbMICHDR);
cbHeaderLength = wTxBufSize + sizeof(struct vnt_rrv_time_ab) +
cbMICHDR + sizeof(struct vnt_tx_datahead_a_fb);
}
} /* Auto Fall Back */
}
td_info->mic_hdr = pMICHDR;
memset((void *)(pbyTxBufferAddr + wTxBufSize), 0, (cbHeaderLength - wTxBufSize));
/* Fill FIFO,RrvTime,RTS,and CTS */
s_vGenerateTxParameter(pDevice, byPktType, tx_buffer_head, pvRrvTime, pvRTS, pvCTS,
cbFrameSize, bNeedACK, uDMAIdx, hdr, pDevice->wCurrentRate);
/* Fill DataHead */
uDuration = s_uFillDataHead(pDevice, byPktType, pvTxDataHd, cbFrameSize, uDMAIdx, bNeedACK,
0, 0, uMACfragNum, byFBOption, pDevice->wCurrentRate, is_pspoll);
hdr->duration_id = uDuration;
cbReqCount = cbHeaderLength + uPadding + skb->len;
pbyBuffer = (unsigned char *)pHeadTD->td_info->buf;
uLength = cbHeaderLength + uPadding;
/* Copy the Packet into a tx Buffer */
memcpy((pbyBuffer + uLength), skb->data, skb->len);
ptdCurr = pHeadTD;
ptdCurr->td_info->req_count = (u16)cbReqCount;
return cbHeaderLength;
}
static void vnt_fill_txkey(struct ieee80211_hdr *hdr, u8 *key_buffer,
struct ieee80211_key_conf *tx_key,
struct sk_buff *skb, u16 payload_len,
struct vnt_mic_hdr *mic_hdr)
{
u64 pn64;
u8 *iv = ((u8 *)hdr + ieee80211_get_hdrlen_from_skb(skb));
/* strip header and icv len from payload */
payload_len -= ieee80211_get_hdrlen_from_skb(skb);
payload_len -= tx_key->icv_len;
switch (tx_key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
memcpy(key_buffer, iv, 3);
memcpy(key_buffer + 3, tx_key->key, tx_key->keylen);
if (tx_key->keylen == WLAN_KEY_LEN_WEP40) {
memcpy(key_buffer + 8, iv, 3);
memcpy(key_buffer + 11,
tx_key->key, WLAN_KEY_LEN_WEP40);
}
break;
case WLAN_CIPHER_SUITE_TKIP:
ieee80211_get_tkip_p2k(tx_key, skb, key_buffer);
break;
case WLAN_CIPHER_SUITE_CCMP:
if (!mic_hdr)
return;
mic_hdr->id = 0x59;
mic_hdr->payload_len = cpu_to_be16(payload_len);
ether_addr_copy(mic_hdr->mic_addr2, hdr->addr2);
pn64 = atomic64_read(&tx_key->tx_pn);
mic_hdr->ccmp_pn[5] = pn64;
mic_hdr->ccmp_pn[4] = pn64 >> 8;
mic_hdr->ccmp_pn[3] = pn64 >> 16;
mic_hdr->ccmp_pn[2] = pn64 >> 24;
mic_hdr->ccmp_pn[1] = pn64 >> 32;
mic_hdr->ccmp_pn[0] = pn64 >> 40;
if (ieee80211_has_a4(hdr->frame_control))
mic_hdr->hlen = cpu_to_be16(28);
else
mic_hdr->hlen = cpu_to_be16(22);
ether_addr_copy(mic_hdr->addr1, hdr->addr1);
ether_addr_copy(mic_hdr->addr2, hdr->addr2);
ether_addr_copy(mic_hdr->addr3, hdr->addr3);
mic_hdr->frame_control = cpu_to_le16(
le16_to_cpu(hdr->frame_control) & 0xc78f);
mic_hdr->seq_ctrl = cpu_to_le16(
le16_to_cpu(hdr->seq_ctrl) & 0xf);
if (ieee80211_has_a4(hdr->frame_control))
ether_addr_copy(mic_hdr->addr4, hdr->addr4);
memcpy(key_buffer, tx_key->key, WLAN_KEY_LEN_CCMP);
break;
default:
break;
}
}
int vnt_generate_fifo_header(struct vnt_private *priv, u32 dma_idx,
struct vnt_tx_desc *head_td, struct sk_buff *skb)
{
struct vnt_td_info *td_info = head_td->td_info;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *tx_rate = &info->control.rates[0];
struct ieee80211_rate *rate;
struct ieee80211_key_conf *tx_key;
struct ieee80211_hdr *hdr;
struct vnt_tx_fifo_head *tx_buffer_head =
(struct vnt_tx_fifo_head *)td_info->buf;
u16 tx_body_size = skb->len, current_rate;
u8 pkt_type;
bool is_pspoll = false;
memset(tx_buffer_head, 0, sizeof(*tx_buffer_head));
hdr = (struct ieee80211_hdr *)(skb->data);
rate = ieee80211_get_tx_rate(priv->hw, info);
current_rate = rate->hw_value;
if (priv->wCurrentRate != current_rate &&
!(priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) {
priv->wCurrentRate = current_rate;
RFbSetPower(priv, priv->wCurrentRate,
priv->hw->conf.chandef.chan->hw_value);
}
if (current_rate > RATE_11M) {
if (info->band == NL80211_BAND_5GHZ) {
pkt_type = PK_TYPE_11A;
} else {
if (tx_rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
pkt_type = PK_TYPE_11GB;
else
pkt_type = PK_TYPE_11GA;
}
} else {
pkt_type = PK_TYPE_11B;
}
/*Set fifo controls */
if (pkt_type == PK_TYPE_11A)
tx_buffer_head->fifo_ctl = 0;
else if (pkt_type == PK_TYPE_11B)
tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11B);
else if (pkt_type == PK_TYPE_11GB)
tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GB);
else if (pkt_type == PK_TYPE_11GA)
tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GA);
/* generate interrupt */
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_GENINT);
if (!ieee80211_is_data(hdr->frame_control)) {
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_TMOEN);
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_ISDMA0);
tx_buffer_head->time_stamp =
cpu_to_le16(DEFAULT_MGN_LIFETIME_RES_64us);
} else {
tx_buffer_head->time_stamp =
cpu_to_le16(DEFAULT_MSDU_LIFETIME_RES_64us);
}
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_NEEDACK);
if (ieee80211_has_retry(hdr->frame_control))
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LRETRY);
if (tx_rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
priv->preamble_type = PREAMBLE_SHORT;
else
priv->preamble_type = PREAMBLE_LONG;
if (tx_rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_RTS);
if (ieee80211_has_a4(hdr->frame_control)) {
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LHEAD);
priv->bLongHeader = true;
}
if (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)
is_pspoll = true;
tx_buffer_head->frag_ctl =
cpu_to_le16(ieee80211_get_hdrlen_from_skb(skb) << 10);
if (info->control.hw_key) {
switch (info->control.hw_key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_LEGACY);
break;
case WLAN_CIPHER_SUITE_TKIP:
tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_TKIP);
break;
case WLAN_CIPHER_SUITE_CCMP:
tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_AES);
break;
default:
break;
}
}
tx_buffer_head->current_rate = cpu_to_le16(current_rate);
/* legacy rates TODO use ieee80211_tx_rate */
if (current_rate >= RATE_18M && ieee80211_is_data(hdr->frame_control)) {
if (priv->byAutoFBCtrl == AUTO_FB_0)
tx_buffer_head->fifo_ctl |=
cpu_to_le16(FIFOCTL_AUTO_FB_0);
else if (priv->byAutoFBCtrl == AUTO_FB_1)
tx_buffer_head->fifo_ctl |=
cpu_to_le16(FIFOCTL_AUTO_FB_1);
}
tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_NONFRAG);
s_cbFillTxBufHead(priv, pkt_type, (u8 *)tx_buffer_head,
dma_idx, head_td, is_pspoll);
if (info->control.hw_key) {
tx_key = info->control.hw_key;
if (tx_key->keylen > 0)
vnt_fill_txkey(hdr, tx_buffer_head->tx_key,
tx_key, skb, tx_body_size,
td_info->mic_hdr);
}
return 0;
}
static int vnt_beacon_xmit(struct vnt_private *priv,
struct sk_buff *skb)
{
struct vnt_tx_short_buf_head *short_head =
(struct vnt_tx_short_buf_head *)priv->tx_beacon_bufs;
struct ieee80211_mgmt *mgmt_hdr = (struct ieee80211_mgmt *)
(priv->tx_beacon_bufs + sizeof(*short_head));
struct ieee80211_tx_info *info;
u32 frame_size = skb->len + 4;
u16 current_rate;
memset(priv->tx_beacon_bufs, 0, sizeof(*short_head));
if (priv->byBBType == BB_TYPE_11A) {
current_rate = RATE_6M;
/* Get SignalField,ServiceField,Length */
vnt_get_phy_field(priv, frame_size, current_rate,
PK_TYPE_11A, &short_head->ab);
/* Get Duration and TimeStampOff */
short_head->duration =
cpu_to_le16((u16)s_uGetDataDuration(priv, DATADUR_B,
frame_size, PK_TYPE_11A, current_rate,
false, 0, 0, 1, AUTO_FB_NONE));
short_head->time_stamp_off =
vnt_time_stamp_off(priv, current_rate);
} else {
current_rate = RATE_1M;
short_head->fifo_ctl |= cpu_to_le16(FIFOCTL_11B);
/* Get SignalField,ServiceField,Length */
vnt_get_phy_field(priv, frame_size, current_rate,
PK_TYPE_11B, &short_head->ab);
/* Get Duration and TimeStampOff */
short_head->duration =
cpu_to_le16((u16)s_uGetDataDuration(priv, DATADUR_B,
frame_size, PK_TYPE_11B, current_rate,
false, 0, 0, 1, AUTO_FB_NONE));
short_head->time_stamp_off =
vnt_time_stamp_off(priv, current_rate);
}
short_head->fifo_ctl |= cpu_to_le16(FIFOCTL_GENINT);
/* Copy Beacon */
memcpy(mgmt_hdr, skb->data, skb->len);
/* time stamp always 0 */
mgmt_hdr->u.beacon.timestamp = 0;
info = IEEE80211_SKB_CB(skb);
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)mgmt_hdr;
hdr->duration_id = 0;
hdr->seq_ctrl = cpu_to_le16(priv->wSeqCounter << 4);
}
priv->wSeqCounter++;
if (priv->wSeqCounter > 0x0fff)
priv->wSeqCounter = 0;
priv->wBCNBufLen = sizeof(*short_head) + skb->len;
iowrite32((u32)priv->tx_beacon_dma, priv->port_offset + MAC_REG_BCNDMAPTR);
iowrite16(priv->wBCNBufLen, priv->port_offset + MAC_REG_BCNDMACTL + 2);
/* Set auto Transmit on */
vt6655_mac_reg_bits_on(priv->port_offset, MAC_REG_TCR, TCR_AUTOBCNTX);
/* Poll Transmit the adapter */
iowrite8(BEACON_READY, priv->port_offset + MAC_REG_BCNDMACTL);
return 0;
}
int vnt_beacon_make(struct vnt_private *priv, struct ieee80211_vif *vif)
{
struct sk_buff *beacon;
beacon = ieee80211_beacon_get(priv->hw, vif, 0);
if (!beacon)
return -ENOMEM;
if (vnt_beacon_xmit(priv, beacon)) {
ieee80211_free_txskb(priv->hw, beacon);
return -ENODEV;
}
return 0;
}
int vnt_beacon_enable(struct vnt_private *priv, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *conf)
{
iowrite8(TFTCTL_TSFCNTRST, priv->port_offset + MAC_REG_TFTCTL);
iowrite8(TFTCTL_TSFCNTREN, priv->port_offset + MAC_REG_TFTCTL);
CARDvSetFirstNextTBTT(priv, conf->beacon_int);
card_set_beacon_period(priv, conf->beacon_int);
return vnt_beacon_make(priv, vif);
}
Codebase Browser
linux