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|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
* All rights reserved.
*
* Purpose: Provide functions to setup NIC operation mode
* Functions:
* s_vSafeResetTx - Rest Tx
* CARDvSetRSPINF - Set RSPINF
* CARDvUpdateBasicTopRate - Update BasicTopRate
* CARDbAddBasicRate - Add to BasicRateSet
* CARDbIsOFDMinBasicRate - Check if any OFDM rate is in BasicRateSet
* CARDqGetTSFOffset - Calculate TSFOffset
* vt6655_get_current_tsf - Read Current NIC TSF counter
* CARDqGetNextTBTT - Calculate Next Beacon TSF counter
* CARDvSetFirstNextTBTT - Set NIC Beacon time
* CARDvUpdateNextTBTT - Sync. NIC Beacon time
* CARDbRadioPowerOff - Turn Off NIC Radio Power
*
* Revision History:
* 06-10-2003 Bryan YC Fan: Re-write codes to support VT3253 spec.
* 08-26-2003 Kyle Hsu: Modify the definition type of iobase.
* 09-01-2003 Bryan YC Fan: Add vUpdateIFS().
*
*/
#include "card.h"
#include "baseband.h"
#include "mac.h"
#include "desc.h"
#include "rf.h"
#include "power.h"
/*--------------------- Static Definitions -------------------------*/
#define C_SIFS_A 16 /* micro sec. */
#define C_SIFS_BG 10
#define C_EIFS 80 /* micro sec. */
#define C_SLOT_SHORT 9 /* micro sec. */
#define C_SLOT_LONG 20
#define C_CWMIN_A 15 /* slot time */
#define C_CWMIN_B 31
#define C_CWMAX 1023 /* slot time */
#define WAIT_BEACON_TX_DOWN_TMO 3 /* Times */
/*--------------------- Static Variables --------------------------*/
static const unsigned short cwRXBCNTSFOff[MAX_RATE] = {
17, 17, 17, 17, 34, 23, 17, 11, 8, 5, 4, 3};
/*--------------------- Static Functions --------------------------*/
static void s_vCalculateOFDMRParameter(unsigned char rate, u8 bb_type,
unsigned char *pbyTxRate,
unsigned char *pbyRsvTime);
/*--------------------- Export Functions --------------------------*/
/*
* Description: Calculate TxRate and RsvTime fields for RSPINF in OFDM mode.
*
* Parameters:
* In:
* wRate - Tx Rate
* byPktType - Tx Packet type
* Out:
* pbyTxRate - pointer to RSPINF TxRate field
* pbyRsvTime - pointer to RSPINF RsvTime field
*
* Return Value: none
*/
static void s_vCalculateOFDMRParameter(unsigned char rate,
u8 bb_type,
unsigned char *pbyTxRate,
unsigned char *pbyRsvTime)
{
switch (rate) {
case RATE_6M:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x9B;
*pbyRsvTime = 44;
} else {
*pbyTxRate = 0x8B;
*pbyRsvTime = 50;
}
break;
case RATE_9M:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x9F;
*pbyRsvTime = 36;
} else {
*pbyTxRate = 0x8F;
*pbyRsvTime = 42;
}
break;
case RATE_12M:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x9A;
*pbyRsvTime = 32;
} else {
*pbyTxRate = 0x8A;
*pbyRsvTime = 38;
}
break;
case RATE_18M:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x9E;
*pbyRsvTime = 28;
} else {
*pbyTxRate = 0x8E;
*pbyRsvTime = 34;
}
break;
case RATE_36M:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x9D;
*pbyRsvTime = 24;
} else {
*pbyTxRate = 0x8D;
*pbyRsvTime = 30;
}
break;
case RATE_48M:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x98;
*pbyRsvTime = 24;
} else {
*pbyTxRate = 0x88;
*pbyRsvTime = 30;
}
break;
case RATE_54M:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x9C;
*pbyRsvTime = 24;
} else {
*pbyTxRate = 0x8C;
*pbyRsvTime = 30;
}
break;
case RATE_24M:
default:
if (bb_type == BB_TYPE_11A) { /* 5GHZ */
*pbyTxRate = 0x99;
*pbyRsvTime = 28;
} else {
*pbyTxRate = 0x89;
*pbyRsvTime = 34;
}
break;
}
}
/*--------------------- Export Functions --------------------------*/
/*
* Description: Update IFS
*
* Parameters:
* In:
* priv - The adapter to be set
* Out:
* none
*
* Return Value: None.
*/
bool CARDbSetPhyParameter(struct vnt_private *priv, u8 bb_type)
{
unsigned char byCWMaxMin = 0;
unsigned char bySlot = 0;
unsigned char bySIFS = 0;
unsigned char byDIFS = 0;
int i;
/* Set SIFS, DIFS, EIFS, SlotTime, CwMin */
if (bb_type == BB_TYPE_11A) {
MACvSetBBType(priv->port_offset, BB_TYPE_11A);
bb_write_embedded(priv, 0x88, 0x03);
bySlot = C_SLOT_SHORT;
bySIFS = C_SIFS_A;
byDIFS = C_SIFS_A + 2 * C_SLOT_SHORT;
byCWMaxMin = 0xA4;
} else if (bb_type == BB_TYPE_11B) {
MACvSetBBType(priv->port_offset, BB_TYPE_11B);
bb_write_embedded(priv, 0x88, 0x02);
bySlot = C_SLOT_LONG;
bySIFS = C_SIFS_BG;
byDIFS = C_SIFS_BG + 2 * C_SLOT_LONG;
byCWMaxMin = 0xA5;
} else { /* PK_TYPE_11GA & PK_TYPE_11GB */
MACvSetBBType(priv->port_offset, BB_TYPE_11G);
bb_write_embedded(priv, 0x88, 0x08);
bySIFS = C_SIFS_BG;
if (priv->short_slot_time) {
bySlot = C_SLOT_SHORT;
byDIFS = C_SIFS_BG + 2 * C_SLOT_SHORT;
} else {
bySlot = C_SLOT_LONG;
byDIFS = C_SIFS_BG + 2 * C_SLOT_LONG;
}
byCWMaxMin = 0xa4;
for (i = RATE_54M; i >= RATE_6M; i--) {
if (priv->basic_rates & ((u32)(0x1 << i))) {
byCWMaxMin |= 0x1;
break;
}
}
}
if (priv->byRFType == RF_RFMD2959) {
/*
* bcs TX_PE will reserve 3 us hardware's processing
* time here is 2 us.
*/
bySIFS -= 3;
byDIFS -= 3;
/*
* TX_PE will reserve 3 us for MAX2829 A mode only, it is for
* better TX throughput; MAC will need 2 us to process, so the
* SIFS, DIFS can be shorter by 2 us.
*/
}
if (priv->bySIFS != bySIFS) {
priv->bySIFS = bySIFS;
VNSvOutPortB(priv->port_offset + MAC_REG_SIFS, priv->bySIFS);
}
if (priv->byDIFS != byDIFS) {
priv->byDIFS = byDIFS;
VNSvOutPortB(priv->port_offset + MAC_REG_DIFS, priv->byDIFS);
}
if (priv->byEIFS != C_EIFS) {
priv->byEIFS = C_EIFS;
VNSvOutPortB(priv->port_offset + MAC_REG_EIFS, priv->byEIFS);
}
if (priv->bySlot != bySlot) {
priv->bySlot = bySlot;
VNSvOutPortB(priv->port_offset + MAC_REG_SLOT, priv->bySlot);
bb_set_short_slot_time(priv);
}
if (priv->byCWMaxMin != byCWMaxMin) {
priv->byCWMaxMin = byCWMaxMin;
VNSvOutPortB(priv->port_offset + MAC_REG_CWMAXMIN0,
priv->byCWMaxMin);
}
priv->byPacketType = CARDbyGetPktType(priv);
CARDvSetRSPINF(priv, bb_type);
return true;
}
/*
* Description: Sync. TSF counter to BSS
* Get TSF offset and write to HW
*
* Parameters:
* In:
* priv - The adapter to be sync.
* byRxRate - data rate of receive beacon
* qwBSSTimestamp - Rx BCN's TSF
* qwLocalTSF - Local TSF
* Out:
* none
*
* Return Value: none
*/
bool CARDbUpdateTSF(struct vnt_private *priv, unsigned char byRxRate,
u64 qwBSSTimestamp)
{
u64 local_tsf;
u64 qwTSFOffset = 0;
vt6655_get_current_tsf(priv, &local_tsf);
if (qwBSSTimestamp != local_tsf) {
qwTSFOffset = CARDqGetTSFOffset(byRxRate, qwBSSTimestamp,
local_tsf);
/* adjust TSF, HW's TSF add TSF Offset reg */
VNSvOutPortD(priv->port_offset + MAC_REG_TSFOFST,
(u32)qwTSFOffset);
VNSvOutPortD(priv->port_offset + MAC_REG_TSFOFST + 4,
(u32)(qwTSFOffset >> 32));
MACvRegBitsOn(priv->port_offset, MAC_REG_TFTCTL,
TFTCTL_TSFSYNCEN);
}
return true;
}
/*
* Description: Set NIC TSF counter for first Beacon time
* Get NEXTTBTT from adjusted TSF and Beacon Interval
*
* Parameters:
* In:
* priv - The adapter to be set.
* wBeaconInterval - Beacon Interval
* Out:
* none
*
* Return Value: true if succeed; otherwise false
*/
bool CARDbSetBeaconPeriod(struct vnt_private *priv,
unsigned short wBeaconInterval)
{
u64 qwNextTBTT = 0;
vt6655_get_current_tsf(priv, &qwNextTBTT); /* Get Local TSF counter */
qwNextTBTT = CARDqGetNextTBTT(qwNextTBTT, wBeaconInterval);
/* set HW beacon interval */
VNSvOutPortW(priv->port_offset + MAC_REG_BI, wBeaconInterval);
priv->wBeaconInterval = wBeaconInterval;
/* Set NextTBTT */
VNSvOutPortD(priv->port_offset + MAC_REG_NEXTTBTT, (u32)qwNextTBTT);
VNSvOutPortD(priv->port_offset + MAC_REG_NEXTTBTT + 4,
(u32)(qwNextTBTT >> 32));
MACvRegBitsOn(priv->port_offset, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
return true;
}
/*
* Description: Turn off Radio power
*
* Parameters:
* In:
* priv - The adapter to be turned off
* Out:
* none
*
*/
void CARDbRadioPowerOff(struct vnt_private *priv)
{
if (priv->radio_off)
return;
switch (priv->byRFType) {
case RF_RFMD2959:
MACvWordRegBitsOff(priv->port_offset, MAC_REG_SOFTPWRCTL,
SOFTPWRCTL_TXPEINV);
MACvWordRegBitsOn(priv->port_offset, MAC_REG_SOFTPWRCTL,
SOFTPWRCTL_SWPE1);
break;
case RF_AIROHA:
case RF_AL2230S:
MACvWordRegBitsOff(priv->port_offset, MAC_REG_SOFTPWRCTL,
SOFTPWRCTL_SWPE2);
MACvWordRegBitsOff(priv->port_offset, MAC_REG_SOFTPWRCTL,
SOFTPWRCTL_SWPE3);
break;
}
MACvRegBitsOff(priv->port_offset, MAC_REG_HOSTCR, HOSTCR_RXON);
bb_set_deep_sleep(priv, priv->local_id);
priv->radio_off = true;
pr_debug("chester power off\n");
MACvRegBitsOn(priv->port_offset, MAC_REG_GPIOCTL0,
LED_ACTSET); /* LED issue */
}
void CARDvSafeResetTx(struct vnt_private *priv)
{
unsigned int uu;
struct vnt_tx_desc *pCurrTD;
/* initialize TD index */
priv->apTailTD[0] = &priv->apTD0Rings[0];
priv->apCurrTD[0] = &priv->apTD0Rings[0];
priv->apTailTD[1] = &priv->apTD1Rings[0];
priv->apCurrTD[1] = &priv->apTD1Rings[0];
for (uu = 0; uu < TYPE_MAXTD; uu++)
priv->iTDUsed[uu] = 0;
for (uu = 0; uu < priv->opts.tx_descs[0]; uu++) {
pCurrTD = &priv->apTD0Rings[uu];
pCurrTD->td0.owner = OWNED_BY_HOST;
/* init all Tx Packet pointer to NULL */
}
for (uu = 0; uu < priv->opts.tx_descs[1]; uu++) {
pCurrTD = &priv->apTD1Rings[uu];
pCurrTD->td0.owner = OWNED_BY_HOST;
/* init all Tx Packet pointer to NULL */
}
/* set MAC TD pointer */
MACvSetCurrTXDescAddr(TYPE_TXDMA0, priv, priv->td0_pool_dma);
MACvSetCurrTXDescAddr(TYPE_AC0DMA, priv, priv->td1_pool_dma);
/* set MAC Beacon TX pointer */
MACvSetCurrBCNTxDescAddr(priv->port_offset,
(priv->tx_beacon_dma));
}
/*
* Description:
* Reset Rx
*
* Parameters:
* In:
* priv - Pointer to the adapter
* Out:
* none
*
* Return Value: none
*/
void CARDvSafeResetRx(struct vnt_private *priv)
{
unsigned int uu;
struct vnt_rx_desc *pDesc;
/* initialize RD index */
priv->pCurrRD[0] = &priv->aRD0Ring[0];
priv->pCurrRD[1] = &priv->aRD1Ring[0];
/* init state, all RD is chip's */
for (uu = 0; uu < priv->opts.rx_descs0; uu++) {
pDesc = &priv->aRD0Ring[uu];
pDesc->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
pDesc->rd0.owner = OWNED_BY_NIC;
pDesc->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
}
/* init state, all RD is chip's */
for (uu = 0; uu < priv->opts.rx_descs1; uu++) {
pDesc = &priv->aRD1Ring[uu];
pDesc->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
pDesc->rd0.owner = OWNED_BY_NIC;
pDesc->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
}
/* set perPkt mode */
MACvRx0PerPktMode(priv->port_offset);
MACvRx1PerPktMode(priv->port_offset);
/* set MAC RD pointer */
MACvSetCurrRx0DescAddr(priv, priv->rd0_pool_dma);
MACvSetCurrRx1DescAddr(priv, priv->rd1_pool_dma);
}
/*
* Description: Get response Control frame rate in CCK mode
*
* Parameters:
* In:
* priv - The adapter to be set
* wRateIdx - Receiving data rate
* Out:
* none
*
* Return Value: response Control frame rate
*/
static unsigned short CARDwGetCCKControlRate(struct vnt_private *priv,
unsigned short wRateIdx)
{
unsigned int ui = (unsigned int)wRateIdx;
while (ui > RATE_1M) {
if (priv->basic_rates & ((u32)0x1 << ui))
return (unsigned short)ui;
ui--;
}
return (unsigned short)RATE_1M;
}
/*
* Description: Get response Control frame rate in OFDM mode
*
* Parameters:
* In:
* priv - The adapter to be set
* wRateIdx - Receiving data rate
* Out:
* none
*
* Return Value: response Control frame rate
*/
static unsigned short CARDwGetOFDMControlRate(struct vnt_private *priv,
unsigned short wRateIdx)
{
unsigned int ui = (unsigned int)wRateIdx;
pr_debug("BASIC RATE: %X\n", priv->basic_rates);
if (!CARDbIsOFDMinBasicRate((void *)priv)) {
pr_debug("%s:(NO OFDM) %d\n", __func__, wRateIdx);
if (wRateIdx > RATE_24M)
wRateIdx = RATE_24M;
return wRateIdx;
}
while (ui > RATE_11M) {
if (priv->basic_rates & ((u32)0x1 << ui)) {
pr_debug("%s : %d\n", __func__, ui);
return (unsigned short)ui;
}
ui--;
}
pr_debug("%s: 6M\n", __func__);
return (unsigned short)RATE_24M;
}
/*
* Description: Set RSPINF
*
* Parameters:
* In:
* priv - The adapter to be set
* Out:
* none
*
* Return Value: None.
*/
void CARDvSetRSPINF(struct vnt_private *priv, u8 bb_type)
{
union vnt_phy_field_swap phy;
unsigned char byTxRate, byRsvTime; /* For OFDM */
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
/* Set to Page1 */
MACvSelectPage1(priv->port_offset);
/* RSPINF_b_1 */
vnt_get_phy_field(priv, 14,
CARDwGetCCKControlRate(priv, RATE_1M),
PK_TYPE_11B, &phy.field_read);
/* swap over to get correct write order */
swap(phy.swap[0], phy.swap[1]);
VNSvOutPortD(priv->port_offset + MAC_REG_RSPINF_B_1, phy.field_write);
/* RSPINF_b_2 */
vnt_get_phy_field(priv, 14,
CARDwGetCCKControlRate(priv, RATE_2M),
PK_TYPE_11B, &phy.field_read);
swap(phy.swap[0], phy.swap[1]);
VNSvOutPortD(priv->port_offset + MAC_REG_RSPINF_B_2, phy.field_write);
/* RSPINF_b_5 */
vnt_get_phy_field(priv, 14,
CARDwGetCCKControlRate(priv, RATE_5M),
PK_TYPE_11B, &phy.field_read);
swap(phy.swap[0], phy.swap[1]);
VNSvOutPortD(priv->port_offset + MAC_REG_RSPINF_B_5, phy.field_write);
/* RSPINF_b_11 */
vnt_get_phy_field(priv, 14,
CARDwGetCCKControlRate(priv, RATE_11M),
PK_TYPE_11B, &phy.field_read);
swap(phy.swap[0], phy.swap[1]);
VNSvOutPortD(priv->port_offset + MAC_REG_RSPINF_B_11, phy.field_write);
/* RSPINF_a_6 */
s_vCalculateOFDMRParameter(RATE_6M,
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_6,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_9 */
s_vCalculateOFDMRParameter(RATE_9M,
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_9,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_12 */
s_vCalculateOFDMRParameter(RATE_12M,
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_12,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_18 */
s_vCalculateOFDMRParameter(RATE_18M,
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_18,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_24 */
s_vCalculateOFDMRParameter(RATE_24M,
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_24,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_36 */
s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
RATE_36M),
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_36,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_48 */
s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
RATE_48M),
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_48,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_54 */
s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
RATE_54M),
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_54,
MAKEWORD(byTxRate, byRsvTime));
/* RSPINF_a_72 */
s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
RATE_54M),
bb_type,
&byTxRate,
&byRsvTime);
VNSvOutPortW(priv->port_offset + MAC_REG_RSPINF_A_72,
MAKEWORD(byTxRate, byRsvTime));
/* Set to Page0 */
MACvSelectPage0(priv->port_offset);
spin_unlock_irqrestore(&priv->lock, flags);
}
void CARDvUpdateBasicTopRate(struct vnt_private *priv)
{
unsigned char byTopOFDM = RATE_24M, byTopCCK = RATE_1M;
unsigned char ii;
/* Determines the highest basic rate. */
for (ii = RATE_54M; ii >= RATE_6M; ii--) {
if ((priv->basic_rates) & ((u32)(1 << ii))) {
byTopOFDM = ii;
break;
}
}
priv->byTopOFDMBasicRate = byTopOFDM;
for (ii = RATE_11M;; ii--) {
if ((priv->basic_rates) & ((u32)(1 << ii))) {
byTopCCK = ii;
break;
}
if (ii == RATE_1M)
break;
}
priv->byTopCCKBasicRate = byTopCCK;
}
bool CARDbIsOFDMinBasicRate(struct vnt_private *priv)
{
int ii;
for (ii = RATE_54M; ii >= RATE_6M; ii--) {
if ((priv->basic_rates) & ((u32)BIT(ii)))
return true;
}
return false;
}
unsigned char CARDbyGetPktType(struct vnt_private *priv)
{
if (priv->byBBType == BB_TYPE_11A || priv->byBBType == BB_TYPE_11B)
return (unsigned char)priv->byBBType;
else if (CARDbIsOFDMinBasicRate((void *)priv))
return PK_TYPE_11GA;
else
return PK_TYPE_11GB;
}
/*
* Description: Calculate TSF offset of two TSF input
* Get TSF Offset from RxBCN's TSF and local TSF
*
* Parameters:
* In:
* priv - The adapter to be sync.
* qwTSF1 - Rx BCN's TSF
* qwTSF2 - Local TSF
* Out:
* none
*
* Return Value: TSF Offset value
*/
u64 CARDqGetTSFOffset(unsigned char byRxRate, u64 qwTSF1, u64 qwTSF2)
{
unsigned short wRxBcnTSFOffst;
wRxBcnTSFOffst = cwRXBCNTSFOff[byRxRate % MAX_RATE];
qwTSF2 += (u64)wRxBcnTSFOffst;
return qwTSF1 - qwTSF2;
}
/*
* Description: Read NIC TSF counter
* Get local TSF counter
*
* Parameters:
* In:
* priv - The adapter to be read
* Out:
* qwCurrTSF - Current TSF counter
*
* Return Value: true if success; otherwise false
*/
bool vt6655_get_current_tsf(struct vnt_private *priv, u64 *pqwCurrTSF)
{
void __iomem *iobase = priv->port_offset;
unsigned short ww;
unsigned char data;
u32 low, high;
MACvRegBitsOn(iobase, MAC_REG_TFTCTL, TFTCTL_TSFCNTRRD);
for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
data = ioread8(iobase + MAC_REG_TFTCTL);
if (!(data & TFTCTL_TSFCNTRRD))
break;
}
if (ww == W_MAX_TIMEOUT)
return false;
low = ioread32(iobase + MAC_REG_TSFCNTR);
high = ioread32(iobase + MAC_REG_TSFCNTR + 4);
*pqwCurrTSF = le64_to_cpu(low + ((u64)high << 32));
return true;
}
/*
* Description: Read NIC TSF counter
* Get NEXTTBTT from adjusted TSF and Beacon Interval
*
* Parameters:
* In:
* qwTSF - Current TSF counter
* wbeaconInterval - Beacon Interval
* Out:
* qwCurrTSF - Current TSF counter
*
* Return Value: TSF value of next Beacon
*/
u64 CARDqGetNextTBTT(u64 qwTSF, unsigned short wBeaconInterval)
{
u32 beacon_int;
beacon_int = wBeaconInterval * 1024;
if (beacon_int) {
do_div(qwTSF, beacon_int);
qwTSF += 1;
qwTSF *= beacon_int;
}
return qwTSF;
}
/*
* Description: Set NIC TSF counter for first Beacon time
* Get NEXTTBTT from adjusted TSF and Beacon Interval
*
* Parameters:
* In:
* iobase - IO Base
* wBeaconInterval - Beacon Interval
* Out:
* none
*
* Return Value: none
*/
void CARDvSetFirstNextTBTT(struct vnt_private *priv,
unsigned short wBeaconInterval)
{
void __iomem *iobase = priv->port_offset;
u64 qwNextTBTT = 0;
vt6655_get_current_tsf(priv, &qwNextTBTT); /* Get Local TSF counter */
qwNextTBTT = CARDqGetNextTBTT(qwNextTBTT, wBeaconInterval);
/* Set NextTBTT */
VNSvOutPortD(iobase + MAC_REG_NEXTTBTT, (u32)qwNextTBTT);
VNSvOutPortD(iobase + MAC_REG_NEXTTBTT + 4, (u32)(qwNextTBTT >> 32));
MACvRegBitsOn(iobase, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
}
/*
* Description: Sync NIC TSF counter for Beacon time
* Get NEXTTBTT and write to HW
*
* Parameters:
* In:
* priv - The adapter to be set
* qwTSF - Current TSF counter
* wBeaconInterval - Beacon Interval
* Out:
* none
*
* Return Value: none
*/
void CARDvUpdateNextTBTT(struct vnt_private *priv, u64 qwTSF,
unsigned short wBeaconInterval)
{
void __iomem *iobase = priv->port_offset;
qwTSF = CARDqGetNextTBTT(qwTSF, wBeaconInterval);
/* Set NextTBTT */
VNSvOutPortD(iobase + MAC_REG_NEXTTBTT, (u32)qwTSF);
VNSvOutPortD(iobase + MAC_REG_NEXTTBTT + 4, (u32)(qwTSF >> 32));
MACvRegBitsOn(iobase, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
pr_debug("Card:Update Next TBTT[%8llx]\n", qwTSF);
}
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