diff options
Diffstat (limited to 'drivers/staging/vt6655/rxtx.c')
| -rw-r--r-- | drivers/staging/vt6655/rxtx.c | 1462 |
1 files changed, 1462 insertions, 0 deletions
diff --git a/drivers/staging/vt6655/rxtx.c b/drivers/staging/vt6655/rxtx.c new file mode 100644 index 000000000..5bdb51767 --- /dev/null +++ b/drivers/staging/vt6655/rxtx.c @@ -0,0 +1,1462 @@ +// 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 wTimeStampOff[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 wFB_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 wFB_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(wTimeStampOff[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 = wFB_Opt0[FB_RATE0][wRate]; + else + wRate = wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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, wFB_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); + + CARDbSetBeaconPeriod(priv, conf->beacon_int); + + return vnt_beacon_make(priv, vif); +} |