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freebsd-dev/sys/dev/ath/ath_hal/ar5416/ar5416_xmit.c
Adrian Chadd ffdc8f48dd Add a workaround for AR5416, AR9130 and AR9160 chipsets - work around 
an incorrectly calculated RTS duration value when transmitting aggregates.

These earlier 802.11n NICs incorrectly used the ACK duration time when
calculating what to put in the RTS of an aggregate frame.  Instead it
should have used the block-ack time.  The result is that other stations
may not reserve enough time and start transmitting _over_ the top of
the in-progress blockack field.  Tsk.

This workaround is to popuate the burst duration field with the delta
between the ACK duration the hardware is using and the required duration
for the block-ack.  The result is that the RTS field should now contain
the correct duration for the subsequent block-ack.

This doesn't apply for AR9280 and later NICs.

Obtained from:	Qualcomm Atheros
2013-02-22 07:07:11 +00:00

1281 lines
38 KiB
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/*
* Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
* Copyright (c) 2002-2008 Atheros Communications, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $FreeBSD$
*/
#include "opt_ah.h"
#include "ah.h"
#include "ah_desc.h"
#include "ah_internal.h"
#include "ar5416/ar5416.h"
#include "ar5416/ar5416reg.h"
#include "ar5416/ar5416phy.h"
#include "ar5416/ar5416desc.h"
/*
* Stop transmit on the specified queue
*/
HAL_BOOL
ar5416StopTxDma(struct ath_hal *ah, u_int q)
{
#define STOP_DMA_TIMEOUT 4000 /* us */
#define STOP_DMA_ITER 100 /* us */
u_int i;
HALASSERT(q < AH_PRIVATE(ah)->ah_caps.halTotalQueues);
HALASSERT(AH5212(ah)->ah_txq[q].tqi_type != HAL_TX_QUEUE_INACTIVE);
OS_REG_WRITE(ah, AR_Q_TXD, 1 << q);
for (i = STOP_DMA_TIMEOUT/STOP_DMA_ITER; i != 0; i--) {
if (ar5212NumTxPending(ah, q) == 0)
break;
OS_DELAY(STOP_DMA_ITER);
}
#ifdef AH_DEBUG
if (i == 0) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: queue %u DMA did not stop in 400 msec\n", __func__, q);
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: QSTS 0x%x Q_TXE 0x%x Q_TXD 0x%x Q_CBR 0x%x\n", __func__,
OS_REG_READ(ah, AR_QSTS(q)), OS_REG_READ(ah, AR_Q_TXE),
OS_REG_READ(ah, AR_Q_TXD), OS_REG_READ(ah, AR_QCBRCFG(q)));
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: Q_MISC 0x%x Q_RDYTIMECFG 0x%x Q_RDYTIMESHDN 0x%x\n",
__func__, OS_REG_READ(ah, AR_QMISC(q)),
OS_REG_READ(ah, AR_QRDYTIMECFG(q)),
OS_REG_READ(ah, AR_Q_RDYTIMESHDN));
}
#endif /* AH_DEBUG */
/* ar5416 and up can kill packets at the PCU level */
if (ar5212NumTxPending(ah, q)) {
uint32_t j;
HALDEBUG(ah, HAL_DEBUG_TXQUEUE,
"%s: Num of pending TX Frames %d on Q %d\n",
__func__, ar5212NumTxPending(ah, q), q);
/* Kill last PCU Tx Frame */
/* TODO - save off and restore current values of Q1/Q2? */
for (j = 0; j < 2; j++) {
uint32_t tsfLow = OS_REG_READ(ah, AR_TSF_L32);
OS_REG_WRITE(ah, AR_QUIET2,
SM(10, AR_QUIET2_QUIET_DUR));
OS_REG_WRITE(ah, AR_QUIET_PERIOD, 100);
OS_REG_WRITE(ah, AR_NEXT_QUIET, tsfLow >> 10);
OS_REG_SET_BIT(ah, AR_TIMER_MODE, AR_TIMER_MODE_QUIET);
if ((OS_REG_READ(ah, AR_TSF_L32)>>10) == (tsfLow>>10))
break;
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: TSF moved while trying to set quiet time "
"TSF: 0x%08x\n", __func__, tsfLow);
HALASSERT(j < 1); /* TSF shouldn't count twice or reg access is taking forever */
}
OS_REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_CHAN_IDLE);
/* Allow the quiet mechanism to do its work */
OS_DELAY(200);
OS_REG_CLR_BIT(ah, AR_TIMER_MODE, AR_TIMER_MODE_QUIET);
/* Verify the transmit q is empty */
for (i = STOP_DMA_TIMEOUT/STOP_DMA_ITER; i != 0; i--) {
if (ar5212NumTxPending(ah, q) == 0)
break;
OS_DELAY(STOP_DMA_ITER);
}
if (i == 0) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: Failed to stop Tx DMA in %d msec after killing"
" last frame\n", __func__, STOP_DMA_TIMEOUT / 1000);
}
OS_REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_CHAN_IDLE);
}
OS_REG_WRITE(ah, AR_Q_TXD, 0);
return (i != 0);
#undef STOP_DMA_ITER
#undef STOP_DMA_TIMEOUT
}
#define VALID_KEY_TYPES \
((1 << HAL_KEY_TYPE_CLEAR) | (1 << HAL_KEY_TYPE_WEP)|\
(1 << HAL_KEY_TYPE_AES) | (1 << HAL_KEY_TYPE_TKIP))
#define isValidKeyType(_t) ((1 << (_t)) & VALID_KEY_TYPES)
#define set11nTries(_series, _index) \
(SM((_series)[_index].Tries, AR_XmitDataTries##_index))
#define set11nRate(_series, _index) \
(SM((_series)[_index].Rate, AR_XmitRate##_index))
#define set11nPktDurRTSCTS(_series, _index) \
(SM((_series)[_index].PktDuration, AR_PacketDur##_index) |\
((_series)[_index].RateFlags & HAL_RATESERIES_RTS_CTS ?\
AR_RTSCTSQual##_index : 0))
#define set11nRateFlags(_series, _index) \
((_series)[_index].RateFlags & HAL_RATESERIES_2040 ? AR_2040_##_index : 0) \
|((_series)[_index].RateFlags & HAL_RATESERIES_HALFGI ? AR_GI##_index : 0) \
|((_series)[_index].RateFlags & HAL_RATESERIES_STBC ? AR_STBC##_index : 0) \
|SM((_series)[_index].ChSel, AR_ChainSel##_index)
/*
* Descriptor Access Functions
*/
#define VALID_PKT_TYPES \
((1<<HAL_PKT_TYPE_NORMAL)|(1<<HAL_PKT_TYPE_ATIM)|\
(1<<HAL_PKT_TYPE_PSPOLL)|(1<<HAL_PKT_TYPE_PROBE_RESP)|\
(1<<HAL_PKT_TYPE_BEACON)|(1<<HAL_PKT_TYPE_AMPDU))
#define isValidPktType(_t) ((1<<(_t)) & VALID_PKT_TYPES)
#define VALID_TX_RATES \
((1<<0x0b)|(1<<0x0f)|(1<<0x0a)|(1<<0x0e)|(1<<0x09)|(1<<0x0d)|\
(1<<0x08)|(1<<0x0c)|(1<<0x1b)|(1<<0x1a)|(1<<0x1e)|(1<<0x19)|\
(1<<0x1d)|(1<<0x18)|(1<<0x1c)|(1<<0x01)|(1<<0x02)|(1<<0x03)|\
(1<<0x04)|(1<<0x05)|(1<<0x06)|(1<<0x07)|(1<<0x00))
/* NB: accept HT rates */
#define isValidTxRate(_r) ((1<<((_r) & 0x7f)) & VALID_TX_RATES)
HAL_BOOL
ar5416SetupTxDesc(struct ath_hal *ah, struct ath_desc *ds,
u_int pktLen,
u_int hdrLen,
HAL_PKT_TYPE type,
u_int txPower,
u_int txRate0, u_int txTries0,
u_int keyIx,
u_int antMode,
u_int flags,
u_int rtsctsRate,
u_int rtsctsDuration,
u_int compicvLen,
u_int compivLen,
u_int comp)
{
#define RTSCTS (HAL_TXDESC_RTSENA|HAL_TXDESC_CTSENA)
struct ar5416_desc *ads = AR5416DESC(ds);
struct ath_hal_5416 *ahp = AH5416(ah);
(void) hdrLen;
HALASSERT(txTries0 != 0);
HALASSERT(isValidPktType(type));
HALASSERT(isValidTxRate(txRate0));
HALASSERT((flags & RTSCTS) != RTSCTS);
/* XXX validate antMode */
txPower = (txPower + AH5212(ah)->ah_txPowerIndexOffset);
if (txPower > 63)
txPower = 63;
ads->ds_ctl0 = (pktLen & AR_FrameLen)
| (txPower << AR_XmitPower_S)
| (flags & HAL_TXDESC_VEOL ? AR_VEOL : 0)
| (flags & HAL_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
| (flags & HAL_TXDESC_INTREQ ? AR_TxIntrReq : 0)
;
ads->ds_ctl1 = (type << AR_FrameType_S)
| (flags & HAL_TXDESC_NOACK ? AR_NoAck : 0)
;
ads->ds_ctl2 = SM(txTries0, AR_XmitDataTries0)
| (flags & HAL_TXDESC_DURENA ? AR_DurUpdateEn : 0)
;
ads->ds_ctl3 = (txRate0 << AR_XmitRate0_S)
;
ads->ds_ctl4 = 0;
ads->ds_ctl5 = 0;
ads->ds_ctl6 = 0;
ads->ds_ctl7 = SM(ahp->ah_tx_chainmask, AR_ChainSel0)
| SM(ahp->ah_tx_chainmask, AR_ChainSel1)
| SM(ahp->ah_tx_chainmask, AR_ChainSel2)
| SM(ahp->ah_tx_chainmask, AR_ChainSel3)
;
ads->ds_ctl8 = SM(0, AR_AntCtl0);
ads->ds_ctl9 = SM(0, AR_AntCtl1) | SM(txPower, AR_XmitPower1);
ads->ds_ctl10 = SM(0, AR_AntCtl2) | SM(txPower, AR_XmitPower2);
ads->ds_ctl11 = SM(0, AR_AntCtl3) | SM(txPower, AR_XmitPower3);
if (keyIx != HAL_TXKEYIX_INVALID) {
/* XXX validate key index */
ads->ds_ctl1 |= SM(keyIx, AR_DestIdx);
ads->ds_ctl0 |= AR_DestIdxValid;
ads->ds_ctl6 |= SM(ahp->ah_keytype[keyIx], AR_EncrType);
}
if (flags & RTSCTS) {
if (!isValidTxRate(rtsctsRate)) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: invalid rts/cts rate 0x%x\n",
__func__, rtsctsRate);
return AH_FALSE;
}
/* XXX validate rtsctsDuration */
ads->ds_ctl0 |= (flags & HAL_TXDESC_CTSENA ? AR_CTSEnable : 0)
| (flags & HAL_TXDESC_RTSENA ? AR_RTSEnable : 0)
;
ads->ds_ctl7 |= (rtsctsRate << AR_RTSCTSRate_S);
}
/*
* Set the TX antenna to 0 for Kite
* To preserve existing behaviour, also set the TPC bits to 0;
* when TPC is enabled these should be filled in appropriately.
*/
if (AR_SREV_KITE(ah)) {
ads->ds_ctl8 = SM(0, AR_AntCtl0);
ads->ds_ctl9 = SM(0, AR_AntCtl1) | SM(0, AR_XmitPower1);
ads->ds_ctl10 = SM(0, AR_AntCtl2) | SM(0, AR_XmitPower2);
ads->ds_ctl11 = SM(0, AR_AntCtl3) | SM(0, AR_XmitPower3);
}
return AH_TRUE;
#undef RTSCTS
}
HAL_BOOL
ar5416SetupXTxDesc(struct ath_hal *ah, struct ath_desc *ds,
u_int txRate1, u_int txTries1,
u_int txRate2, u_int txTries2,
u_int txRate3, u_int txTries3)
{
struct ar5416_desc *ads = AR5416DESC(ds);
if (txTries1) {
HALASSERT(isValidTxRate(txRate1));
ads->ds_ctl2 |= SM(txTries1, AR_XmitDataTries1);
ads->ds_ctl3 |= (txRate1 << AR_XmitRate1_S);
}
if (txTries2) {
HALASSERT(isValidTxRate(txRate2));
ads->ds_ctl2 |= SM(txTries2, AR_XmitDataTries2);
ads->ds_ctl3 |= (txRate2 << AR_XmitRate2_S);
}
if (txTries3) {
HALASSERT(isValidTxRate(txRate3));
ads->ds_ctl2 |= SM(txTries3, AR_XmitDataTries3);
ads->ds_ctl3 |= (txRate3 << AR_XmitRate3_S);
}
return AH_TRUE;
}
HAL_BOOL
ar5416FillTxDesc(struct ath_hal *ah, struct ath_desc *ds,
HAL_DMA_ADDR *bufAddrList, uint32_t *segLenList, u_int descId,
u_int qcuId, HAL_BOOL firstSeg, HAL_BOOL lastSeg,
const struct ath_desc *ds0)
{
struct ar5416_desc *ads = AR5416DESC(ds);
uint32_t segLen = segLenList[0];
HALASSERT((segLen &~ AR_BufLen) == 0);
ds->ds_data = bufAddrList[0];
if (firstSeg) {
/*
* First descriptor, don't clobber xmit control data
* setup by ar5212SetupTxDesc.
*/
ads->ds_ctl1 |= segLen | (lastSeg ? 0 : AR_TxMore);
} else if (lastSeg) { /* !firstSeg && lastSeg */
/*
* Last descriptor in a multi-descriptor frame,
* copy the multi-rate transmit parameters from
* the first frame for processing on completion.
*/
ads->ds_ctl1 = segLen;
#ifdef AH_NEED_DESC_SWAP
ads->ds_ctl0 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl0)
& AR_TxIntrReq;
ads->ds_ctl2 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl2);
ads->ds_ctl3 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl3);
/* ctl6 - we only need encrtype; the rest are blank */
ads->ds_ctl6 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl6 & AR_EncrType);
#else
ads->ds_ctl0 = AR5416DESC_CONST(ds0)->ds_ctl0 & AR_TxIntrReq;
ads->ds_ctl2 = AR5416DESC_CONST(ds0)->ds_ctl2;
ads->ds_ctl3 = AR5416DESC_CONST(ds0)->ds_ctl3;
/* ctl6 - we only need encrtype; the rest are blank */
ads->ds_ctl6 = AR5416DESC_CONST(ds0)->ds_ctl6 & AR_EncrType;
#endif
} else { /* !firstSeg && !lastSeg */
/*
* Intermediate descriptor in a multi-descriptor frame.
*/
#ifdef AH_NEED_DESC_SWAP
ads->ds_ctl0 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl0)
& AR_TxIntrReq;
ads->ds_ctl6 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl6 & AR_EncrType);
#else
ads->ds_ctl0 = AR5416DESC_CONST(ds0)->ds_ctl0 & AR_TxIntrReq;
ads->ds_ctl6 = AR5416DESC_CONST(ds0)->ds_ctl6 & AR_EncrType;
#endif
ads->ds_ctl1 = segLen | AR_TxMore;
ads->ds_ctl2 = 0;
ads->ds_ctl3 = 0;
}
/* XXX only on last descriptor? */
OS_MEMZERO(ads->u.tx.status, sizeof(ads->u.tx.status));
return AH_TRUE;
}
/*
* NB: cipher is no longer used, it's calculated.
*/
HAL_BOOL
ar5416ChainTxDesc(struct ath_hal *ah, struct ath_desc *ds,
HAL_DMA_ADDR *bufAddrList,
uint32_t *segLenList,
u_int pktLen,
u_int hdrLen,
HAL_PKT_TYPE type,
u_int keyIx,
HAL_CIPHER cipher,
uint8_t delims,
HAL_BOOL firstSeg,
HAL_BOOL lastSeg,
HAL_BOOL lastAggr)
{
struct ar5416_desc *ads = AR5416DESC(ds);
uint32_t *ds_txstatus = AR5416_DS_TXSTATUS(ah,ads);
struct ath_hal_5416 *ahp = AH5416(ah);
u_int segLen = segLenList[0];
int isaggr = 0;
uint32_t last_aggr = 0;
(void) hdrLen;
(void) ah;
HALASSERT((segLen &~ AR_BufLen) == 0);
ds->ds_data = bufAddrList[0];
HALASSERT(isValidPktType(type));
if (type == HAL_PKT_TYPE_AMPDU) {
type = HAL_PKT_TYPE_NORMAL;
isaggr = 1;
if (lastAggr == AH_FALSE)
last_aggr = AR_MoreAggr;
}
/*
* Since this function is called before any of the other
* descriptor setup functions (at least in this particular
* 802.11n aggregation implementation), always bzero() the
* descriptor. Previously this would be done for all but
* the first segment.
* XXX TODO: figure out why; perhaps I'm using this slightly
* XXX incorrectly.
*/
OS_MEMZERO(ds->ds_hw, AR5416_DESC_TX_CTL_SZ);
/*
* Note: VEOL should only be for the last descriptor in the chain.
*/
ads->ds_ctl0 = (pktLen & AR_FrameLen);
/*
* For aggregates:
* + IsAggr must be set for all descriptors of all subframes of
* the aggregate
* + MoreAggr must be set for all descriptors of all subframes
* of the aggregate EXCEPT the last subframe;
* + MoreAggr must be _CLEAR_ for all descrpitors of the last
* subframe of the aggregate.
*/
ads->ds_ctl1 = (type << AR_FrameType_S)
| (isaggr ? (AR_IsAggr | last_aggr) : 0);
ads->ds_ctl2 = 0;
ads->ds_ctl3 = 0;
if (keyIx != HAL_TXKEYIX_INVALID) {
/* XXX validate key index */
ads->ds_ctl1 |= SM(keyIx, AR_DestIdx);
ads->ds_ctl0 |= AR_DestIdxValid;
}
ads->ds_ctl6 |= SM(ahp->ah_keytype[keyIx], AR_EncrType);
if (isaggr) {
ads->ds_ctl6 |= SM(delims, AR_PadDelim);
}
if (firstSeg) {
ads->ds_ctl1 |= segLen | (lastSeg ? 0 : AR_TxMore);
} else if (lastSeg) { /* !firstSeg && lastSeg */
ads->ds_ctl0 = 0;
ads->ds_ctl1 |= segLen;
} else { /* !firstSeg && !lastSeg */
/*
* Intermediate descriptor in a multi-descriptor frame.
*/
ads->ds_ctl0 = 0;
ads->ds_ctl1 |= segLen | AR_TxMore;
}
ds_txstatus[0] = ds_txstatus[1] = 0;
ds_txstatus[9] &= ~AR_TxDone;
return AH_TRUE;
}
HAL_BOOL
ar5416SetupFirstTxDesc(struct ath_hal *ah, struct ath_desc *ds,
u_int aggrLen, u_int flags, u_int txPower,
u_int txRate0, u_int txTries0, u_int antMode,
u_int rtsctsRate, u_int rtsctsDuration)
{
#define RTSCTS (HAL_TXDESC_RTSENA|HAL_TXDESC_CTSENA)
struct ar5416_desc *ads = AR5416DESC(ds);
struct ath_hal_5212 *ahp = AH5212(ah);
HALASSERT(txTries0 != 0);
HALASSERT(isValidTxRate(txRate0));
HALASSERT((flags & RTSCTS) != RTSCTS);
/* XXX validate antMode */
txPower = (txPower + ahp->ah_txPowerIndexOffset );
if(txPower > 63) txPower=63;
ads->ds_ctl0 |= (txPower << AR_XmitPower_S)
| (flags & HAL_TXDESC_VEOL ? AR_VEOL : 0)
| (flags & HAL_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
| (flags & HAL_TXDESC_INTREQ ? AR_TxIntrReq : 0);
ads->ds_ctl1 |= (flags & HAL_TXDESC_NOACK ? AR_NoAck : 0);
ads->ds_ctl2 |= SM(txTries0, AR_XmitDataTries0);
ads->ds_ctl3 |= (txRate0 << AR_XmitRate0_S);
ads->ds_ctl7 = SM(AH5416(ah)->ah_tx_chainmask, AR_ChainSel0)
| SM(AH5416(ah)->ah_tx_chainmask, AR_ChainSel1)
| SM(AH5416(ah)->ah_tx_chainmask, AR_ChainSel2)
| SM(AH5416(ah)->ah_tx_chainmask, AR_ChainSel3);
/* NB: no V1 WAR */
ads->ds_ctl8 = SM(0, AR_AntCtl0);
ads->ds_ctl9 = SM(0, AR_AntCtl1) | SM(txPower, AR_XmitPower1);
ads->ds_ctl10 = SM(0, AR_AntCtl2) | SM(txPower, AR_XmitPower2);
ads->ds_ctl11 = SM(0, AR_AntCtl3) | SM(txPower, AR_XmitPower3);
ads->ds_ctl6 &= ~(0xffff);
ads->ds_ctl6 |= SM(aggrLen, AR_AggrLen);
if (flags & RTSCTS) {
/* XXX validate rtsctsDuration */
ads->ds_ctl0 |= (flags & HAL_TXDESC_CTSENA ? AR_CTSEnable : 0)
| (flags & HAL_TXDESC_RTSENA ? AR_RTSEnable : 0);
}
/*
* Set the TX antenna to 0 for Kite
* To preserve existing behaviour, also set the TPC bits to 0;
* when TPC is enabled these should be filled in appropriately.
*/
if (AR_SREV_KITE(ah)) {
ads->ds_ctl8 = SM(0, AR_AntCtl0);
ads->ds_ctl9 = SM(0, AR_AntCtl1) | SM(0, AR_XmitPower1);
ads->ds_ctl10 = SM(0, AR_AntCtl2) | SM(0, AR_XmitPower2);
ads->ds_ctl11 = SM(0, AR_AntCtl3) | SM(0, AR_XmitPower3);
}
return AH_TRUE;
#undef RTSCTS
}
HAL_BOOL
ar5416SetupLastTxDesc(struct ath_hal *ah, struct ath_desc *ds,
const struct ath_desc *ds0)
{
struct ar5416_desc *ads = AR5416DESC(ds);
ads->ds_ctl1 &= ~AR_MoreAggr;
ads->ds_ctl6 &= ~AR_PadDelim;
/* hack to copy rate info to last desc for later processing */
#ifdef AH_NEED_DESC_SWAP
ads->ds_ctl2 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl2);
ads->ds_ctl3 = __bswap32(AR5416DESC_CONST(ds0)->ds_ctl3);
#else
ads->ds_ctl2 = AR5416DESC_CONST(ds0)->ds_ctl2;
ads->ds_ctl3 = AR5416DESC_CONST(ds0)->ds_ctl3;
#endif
return AH_TRUE;
}
#ifdef AH_NEED_DESC_SWAP
/* Swap transmit descriptor */
static __inline void
ar5416SwapTxDesc(struct ath_desc *ds)
{
ds->ds_data = __bswap32(ds->ds_data);
ds->ds_ctl0 = __bswap32(ds->ds_ctl0);
ds->ds_ctl1 = __bswap32(ds->ds_ctl1);
ds->ds_hw[0] = __bswap32(ds->ds_hw[0]);
ds->ds_hw[1] = __bswap32(ds->ds_hw[1]);
ds->ds_hw[2] = __bswap32(ds->ds_hw[2]);
ds->ds_hw[3] = __bswap32(ds->ds_hw[3]);
}
#endif
/*
* Processing of HW TX descriptor.
*/
HAL_STATUS
ar5416ProcTxDesc(struct ath_hal *ah,
struct ath_desc *ds, struct ath_tx_status *ts)
{
struct ar5416_desc *ads = AR5416DESC(ds);
uint32_t *ds_txstatus = AR5416_DS_TXSTATUS(ah,ads);
#ifdef AH_NEED_DESC_SWAP
if ((ds_txstatus[9] & __bswap32(AR_TxDone)) == 0)
return HAL_EINPROGRESS;
ar5416SwapTxDesc(ds);
#else
if ((ds_txstatus[9] & AR_TxDone) == 0)
return HAL_EINPROGRESS;
#endif
/* Update software copies of the HW status */
ts->ts_seqnum = MS(ds_txstatus[9], AR_SeqNum);
ts->ts_tstamp = AR_SendTimestamp(ds_txstatus);
ts->ts_tid = MS(ds_txstatus[9], AR_TxTid);
ts->ts_status = 0;
if (ds_txstatus[1] & AR_ExcessiveRetries)
ts->ts_status |= HAL_TXERR_XRETRY;
if (ds_txstatus[1] & AR_Filtered)
ts->ts_status |= HAL_TXERR_FILT;
if (ds_txstatus[1] & AR_FIFOUnderrun)
ts->ts_status |= HAL_TXERR_FIFO;
if (ds_txstatus[9] & AR_TxOpExceeded)
ts->ts_status |= HAL_TXERR_XTXOP;
if (ds_txstatus[1] & AR_TxTimerExpired)
ts->ts_status |= HAL_TXERR_TIMER_EXPIRED;
ts->ts_flags = 0;
if (ds_txstatus[0] & AR_TxBaStatus) {
ts->ts_flags |= HAL_TX_BA;
ts->ts_ba_low = AR_BaBitmapLow(ds_txstatus);
ts->ts_ba_high = AR_BaBitmapHigh(ds_txstatus);
}
if (ds->ds_ctl1 & AR_IsAggr)
ts->ts_flags |= HAL_TX_AGGR;
if (ds_txstatus[1] & AR_DescCfgErr)
ts->ts_flags |= HAL_TX_DESC_CFG_ERR;
if (ds_txstatus[1] & AR_TxDataUnderrun)
ts->ts_flags |= HAL_TX_DATA_UNDERRUN;
if (ds_txstatus[1] & AR_TxDelimUnderrun)
ts->ts_flags |= HAL_TX_DELIM_UNDERRUN;
/*
* Extract the transmit rate used and mark the rate as
* ``alternate'' if it wasn't the series 0 rate.
*/
ts->ts_finaltsi = MS(ds_txstatus[9], AR_FinalTxIdx);
switch (ts->ts_finaltsi) {
case 0:
ts->ts_rate = MS(ads->ds_ctl3, AR_XmitRate0);
break;
case 1:
ts->ts_rate = MS(ads->ds_ctl3, AR_XmitRate1);
break;
case 2:
ts->ts_rate = MS(ads->ds_ctl3, AR_XmitRate2);
break;
case 3:
ts->ts_rate = MS(ads->ds_ctl3, AR_XmitRate3);
break;
}
ts->ts_rssi = MS(ds_txstatus[5], AR_TxRSSICombined);
ts->ts_rssi_ctl[0] = MS(ds_txstatus[0], AR_TxRSSIAnt00);
ts->ts_rssi_ctl[1] = MS(ds_txstatus[0], AR_TxRSSIAnt01);
ts->ts_rssi_ctl[2] = MS(ds_txstatus[0], AR_TxRSSIAnt02);
ts->ts_rssi_ext[0] = MS(ds_txstatus[5], AR_TxRSSIAnt10);
ts->ts_rssi_ext[1] = MS(ds_txstatus[5], AR_TxRSSIAnt11);
ts->ts_rssi_ext[2] = MS(ds_txstatus[5], AR_TxRSSIAnt12);
ts->ts_evm0 = AR_TxEVM0(ds_txstatus);
ts->ts_evm1 = AR_TxEVM1(ds_txstatus);
ts->ts_evm2 = AR_TxEVM2(ds_txstatus);
ts->ts_shortretry = MS(ds_txstatus[1], AR_RTSFailCnt);
ts->ts_longretry = MS(ds_txstatus[1], AR_DataFailCnt);
/*
* The retry count has the number of un-acked tries for the
* final series used. When doing multi-rate retry we must
* fixup the retry count by adding in the try counts for
* each series that was fully-processed. Beware that this
* takes values from the try counts in the final descriptor.
* These are not required by the hardware. We assume they
* are placed there by the driver as otherwise we have no
* access and the driver can't do the calculation because it
* doesn't know the descriptor format.
*/
switch (ts->ts_finaltsi) {
case 3: ts->ts_longretry += MS(ads->ds_ctl2, AR_XmitDataTries2);
case 2: ts->ts_longretry += MS(ads->ds_ctl2, AR_XmitDataTries1);
case 1: ts->ts_longretry += MS(ads->ds_ctl2, AR_XmitDataTries0);
}
/*
* These fields are not used. Zero these to preserve compatability
* with existing drivers.
*/
ts->ts_virtcol = MS(ads->ds_ctl1, AR_VirtRetryCnt);
ts->ts_antenna = 0; /* We don't switch antennas on Owl*/
/* handle tx trigger level changes internally */
if ((ts->ts_status & HAL_TXERR_FIFO) ||
(ts->ts_flags & (HAL_TX_DATA_UNDERRUN | HAL_TX_DELIM_UNDERRUN)))
ar5212UpdateTxTrigLevel(ah, AH_TRUE);
return HAL_OK;
}
HAL_BOOL
ar5416SetGlobalTxTimeout(struct ath_hal *ah, u_int tu)
{
struct ath_hal_5416 *ahp = AH5416(ah);
if (tu > 0xFFFF) {
HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad global tx timeout %u\n",
__func__, tu);
/* restore default handling */
ahp->ah_globaltxtimeout = (u_int) -1;
return AH_FALSE;
}
OS_REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
ahp->ah_globaltxtimeout = tu;
return AH_TRUE;
}
u_int
ar5416GetGlobalTxTimeout(struct ath_hal *ah)
{
return MS(OS_REG_READ(ah, AR_GTXTO), AR_GTXTO_TIMEOUT_LIMIT);
}
#define HT_RC_2_MCS(_rc) ((_rc) & 0x0f)
static const u_int8_t baDurationDelta[] = {
24, // 0: BPSK
12, // 1: QPSK 1/2
12, // 2: QPSK 3/4
4, // 3: 16-QAM 1/2
4, // 4: 16-QAM 3/4
4, // 5: 64-QAM 2/3
4, // 6: 64-QAM 3/4
4, // 7: 64-QAM 5/6
24, // 8: BPSK
12, // 9: QPSK 1/2
12, // 10: QPSK 3/4
4, // 11: 16-QAM 1/2
4, // 12: 16-QAM 3/4
4, // 13: 64-QAM 2/3
4, // 14: 64-QAM 3/4
4, // 15: 64-QAM 5/6
};
void
ar5416Set11nRateScenario(struct ath_hal *ah, struct ath_desc *ds,
u_int durUpdateEn, u_int rtsctsRate,
HAL_11N_RATE_SERIES series[], u_int nseries, u_int flags)
{
struct ar5416_desc *ads = AR5416DESC(ds);
uint32_t ds_ctl0;
HALASSERT(nseries == 4);
(void)nseries;
/*
* XXX since the upper layers doesn't know the current chainmask
* XXX setup, just override its decisions here.
* XXX The upper layers need to be taught this!
*/
if (series[0].Tries != 0)
series[0].ChSel = AH5416(ah)->ah_tx_chainmask;
if (series[1].Tries != 0)
series[1].ChSel = AH5416(ah)->ah_tx_chainmask;
if (series[2].Tries != 0)
series[2].ChSel = AH5416(ah)->ah_tx_chainmask;
if (series[3].Tries != 0)
series[3].ChSel = AH5416(ah)->ah_tx_chainmask;
/*
* Only one of RTS and CTS enable must be set.
* If a frame has both set, just do RTS protection -
* that's enough to satisfy legacy protection.
*/
if (flags & (HAL_TXDESC_RTSENA | HAL_TXDESC_CTSENA)) {
ds_ctl0 = ads->ds_ctl0;
if (flags & HAL_TXDESC_RTSENA) {
ds_ctl0 &= ~AR_CTSEnable;
ds_ctl0 |= AR_RTSEnable;
} else {
ds_ctl0 &= ~AR_RTSEnable;
ds_ctl0 |= AR_CTSEnable;
}
ads->ds_ctl0 = ds_ctl0;
} else {
ads->ds_ctl0 =
(ads->ds_ctl0 & ~(AR_RTSEnable | AR_CTSEnable));
}
ads->ds_ctl2 = set11nTries(series, 0)
| set11nTries(series, 1)
| set11nTries(series, 2)
| set11nTries(series, 3)
| (durUpdateEn ? AR_DurUpdateEn : 0);
ads->ds_ctl3 = set11nRate(series, 0)
| set11nRate(series, 1)
| set11nRate(series, 2)
| set11nRate(series, 3);
ads->ds_ctl4 = set11nPktDurRTSCTS(series, 0)
| set11nPktDurRTSCTS(series, 1);
ads->ds_ctl5 = set11nPktDurRTSCTS(series, 2)
| set11nPktDurRTSCTS(series, 3);
ads->ds_ctl7 = set11nRateFlags(series, 0)
| set11nRateFlags(series, 1)
| set11nRateFlags(series, 2)
| set11nRateFlags(series, 3)
| SM(rtsctsRate, AR_RTSCTSRate);
}
/*
* Note: this should be called before calling ar5416SetBurstDuration()
* (if it is indeed called) in order to ensure that the burst duration
* is correctly updated with the BA delta workaround.
*/
void
ar5416Set11nAggrFirst(struct ath_hal *ah, struct ath_desc *ds, u_int aggrLen,
u_int numDelims)
{
struct ar5416_desc *ads = AR5416DESC(ds);
uint32_t flags;
uint32_t burstDur;
uint8_t rate;
ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
ads->ds_ctl6 &= ~(AR_AggrLen | AR_PadDelim);
ads->ds_ctl6 |= SM(aggrLen, AR_AggrLen);
ads->ds_ctl6 |= SM(numDelims, AR_PadDelim);
if (! AR_SREV_MERLIN_10_OR_LATER(ah)) {
/*
* XXX It'd be nice if I were passed in the rate scenario
* at this point..
*/
rate = MS(ads->ds_ctl3, AR_XmitRate0);
flags = ads->ds_ctl0 & (AR_CTSEnable | AR_RTSEnable);
/*
* WAR - MAC assumes normal ACK time instead of
* block ACK while computing packet duration.
* Add this delta to the burst duration in the descriptor.
*/
if (flags && (ads->ds_ctl1 & AR_IsAggr)) {
burstDur = baDurationDelta[HT_RC_2_MCS(rate)];
ads->ds_ctl2 &= ~(AR_BurstDur);
ads->ds_ctl2 |= SM(burstDur, AR_BurstDur);
}
}
}
void
ar5416Set11nAggrMiddle(struct ath_hal *ah, struct ath_desc *ds, u_int numDelims)
{
struct ar5416_desc *ads = AR5416DESC(ds);
uint32_t *ds_txstatus = AR5416_DS_TXSTATUS(ah,ads);
ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
ads->ds_ctl6 &= ~AR_PadDelim;
ads->ds_ctl6 |= SM(numDelims, AR_PadDelim);
ads->ds_ctl6 &= ~AR_AggrLen;
/*
* Clear the TxDone status here, may need to change
* func name to reflect this
*/
ds_txstatus[9] &= ~AR_TxDone;
}
void
ar5416Set11nAggrLast(struct ath_hal *ah, struct ath_desc *ds)
{
struct ar5416_desc *ads = AR5416DESC(ds);
ads->ds_ctl1 |= AR_IsAggr;
ads->ds_ctl1 &= ~AR_MoreAggr;
ads->ds_ctl6 &= ~AR_PadDelim;
}
void
ar5416Clr11nAggr(struct ath_hal *ah, struct ath_desc *ds)
{
struct ar5416_desc *ads = AR5416DESC(ds);
ads->ds_ctl1 &= (~AR_IsAggr & ~AR_MoreAggr);
ads->ds_ctl6 &= ~AR_PadDelim;
ads->ds_ctl6 &= ~AR_AggrLen;
}
/*
* Program the burst duration, with the included BA delta if it's
* applicable.
*/
void
ar5416Set11nBurstDuration(struct ath_hal *ah, struct ath_desc *ds,
u_int burstDuration)
{
struct ar5416_desc *ads = AR5416DESC(ds);
uint32_t burstDur = 0;
uint8_t rate;
if (! AR_SREV_MERLIN_10_OR_LATER(ah)) {
/*
* XXX It'd be nice if I were passed in the rate scenario
* at this point..
*/
rate = MS(ads->ds_ctl3, AR_XmitDataTries0);
/*
* WAR - MAC assumes normal ACK time instead of
* block ACK while computing packet duration.
* Add this delta to the burst duration in the descriptor.
*/
if (ads->ds_ctl1 & AR_IsAggr) {
burstDur = baDurationDelta[HT_RC_2_MCS(rate)];
}
}
ads->ds_ctl2 &= ~AR_BurstDur;
ads->ds_ctl2 |= SM(burstDur + burstDuration, AR_BurstDur);
}
/*
* Retrieve the rate table from the given TX completion descriptor
*/
HAL_BOOL
ar5416GetTxCompletionRates(struct ath_hal *ah, const struct ath_desc *ds0, int *rates, int *tries)
{
const struct ar5416_desc *ads = AR5416DESC_CONST(ds0);
rates[0] = MS(ads->ds_ctl3, AR_XmitRate0);
rates[1] = MS(ads->ds_ctl3, AR_XmitRate1);
rates[2] = MS(ads->ds_ctl3, AR_XmitRate2);
rates[3] = MS(ads->ds_ctl3, AR_XmitRate3);
tries[0] = MS(ads->ds_ctl2, AR_XmitDataTries0);
tries[1] = MS(ads->ds_ctl2, AR_XmitDataTries1);
tries[2] = MS(ads->ds_ctl2, AR_XmitDataTries2);
tries[3] = MS(ads->ds_ctl2, AR_XmitDataTries3);
return AH_TRUE;
}
/*
* TX queue management routines - AR5416 and later chipsets
*/
/*
* Allocate and initialize a tx DCU/QCU combination.
*/
int
ar5416SetupTxQueue(struct ath_hal *ah, HAL_TX_QUEUE type,
const HAL_TXQ_INFO *qInfo)
{
struct ath_hal_5212 *ahp = AH5212(ah);
HAL_TX_QUEUE_INFO *qi;
HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps;
int q, defqflags;
/* by default enable OK+ERR+DESC+URN interrupts */
defqflags = HAL_TXQ_TXOKINT_ENABLE
| HAL_TXQ_TXERRINT_ENABLE
| HAL_TXQ_TXDESCINT_ENABLE
| HAL_TXQ_TXURNINT_ENABLE;
/* XXX move queue assignment to driver */
switch (type) {
case HAL_TX_QUEUE_BEACON:
q = pCap->halTotalQueues-1; /* highest priority */
defqflags |= HAL_TXQ_DBA_GATED
| HAL_TXQ_CBR_DIS_QEMPTY
| HAL_TXQ_ARB_LOCKOUT_GLOBAL
| HAL_TXQ_BACKOFF_DISABLE;
break;
case HAL_TX_QUEUE_CAB:
q = pCap->halTotalQueues-2; /* next highest priority */
defqflags |= HAL_TXQ_DBA_GATED
| HAL_TXQ_CBR_DIS_QEMPTY
| HAL_TXQ_CBR_DIS_BEMPTY
| HAL_TXQ_ARB_LOCKOUT_GLOBAL
| HAL_TXQ_BACKOFF_DISABLE;
break;
case HAL_TX_QUEUE_PSPOLL:
q = 1; /* lowest priority */
defqflags |= HAL_TXQ_DBA_GATED
| HAL_TXQ_CBR_DIS_QEMPTY
| HAL_TXQ_CBR_DIS_BEMPTY
| HAL_TXQ_ARB_LOCKOUT_GLOBAL
| HAL_TXQ_BACKOFF_DISABLE;
break;
case HAL_TX_QUEUE_UAPSD:
q = pCap->halTotalQueues-3; /* nextest highest priority */
if (ahp->ah_txq[q].tqi_type != HAL_TX_QUEUE_INACTIVE) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: no available UAPSD tx queue\n", __func__);
return -1;
}
break;
case HAL_TX_QUEUE_DATA:
for (q = 0; q < pCap->halTotalQueues; q++)
if (ahp->ah_txq[q].tqi_type == HAL_TX_QUEUE_INACTIVE)
break;
if (q == pCap->halTotalQueues) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: no available tx queue\n", __func__);
return -1;
}
break;
default:
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: bad tx queue type %u\n", __func__, type);
return -1;
}
HALDEBUG(ah, HAL_DEBUG_TXQUEUE, "%s: queue %u\n", __func__, q);
qi = &ahp->ah_txq[q];
if (qi->tqi_type != HAL_TX_QUEUE_INACTIVE) {
HALDEBUG(ah, HAL_DEBUG_ANY, "%s: tx queue %u already active\n",
__func__, q);
return -1;
}
OS_MEMZERO(qi, sizeof(HAL_TX_QUEUE_INFO));
qi->tqi_type = type;
if (qInfo == AH_NULL) {
qi->tqi_qflags = defqflags;
qi->tqi_aifs = INIT_AIFS;
qi->tqi_cwmin = HAL_TXQ_USEDEFAULT; /* NB: do at reset */
qi->tqi_cwmax = INIT_CWMAX;
qi->tqi_shretry = INIT_SH_RETRY;
qi->tqi_lgretry = INIT_LG_RETRY;
qi->tqi_physCompBuf = 0;
} else {
qi->tqi_physCompBuf = qInfo->tqi_compBuf;
(void) ar5212SetTxQueueProps(ah, q, qInfo);
}
/* NB: must be followed by ar5212ResetTxQueue */
return q;
}
/*
* Update the h/w interrupt registers to reflect a tx q's configuration.
*/
static void
setTxQInterrupts(struct ath_hal *ah, HAL_TX_QUEUE_INFO *qi)
{
struct ath_hal_5212 *ahp = AH5212(ah);
HALDEBUG(ah, HAL_DEBUG_TXQUEUE,
"%s: tx ok 0x%x err 0x%x desc 0x%x eol 0x%x urn 0x%x\n", __func__,
ahp->ah_txOkInterruptMask, ahp->ah_txErrInterruptMask,
ahp->ah_txDescInterruptMask, ahp->ah_txEolInterruptMask,
ahp->ah_txUrnInterruptMask);
OS_REG_WRITE(ah, AR_IMR_S0,
SM(ahp->ah_txOkInterruptMask, AR_IMR_S0_QCU_TXOK)
| SM(ahp->ah_txDescInterruptMask, AR_IMR_S0_QCU_TXDESC)
);
OS_REG_WRITE(ah, AR_IMR_S1,
SM(ahp->ah_txErrInterruptMask, AR_IMR_S1_QCU_TXERR)
| SM(ahp->ah_txEolInterruptMask, AR_IMR_S1_QCU_TXEOL)
);
OS_REG_RMW_FIELD(ah, AR_IMR_S2,
AR_IMR_S2_QCU_TXURN, ahp->ah_txUrnInterruptMask);
}
/*
* Set the retry, aifs, cwmin/max, readyTime regs for specified queue
* Assumes:
* phwChannel has been set to point to the current channel
*/
#define TU_TO_USEC(_tu) ((_tu) << 10)
HAL_BOOL
ar5416ResetTxQueue(struct ath_hal *ah, u_int q)
{
struct ath_hal_5212 *ahp = AH5212(ah);
HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps;
const struct ieee80211_channel *chan = AH_PRIVATE(ah)->ah_curchan;
HAL_TX_QUEUE_INFO *qi;
uint32_t cwMin, chanCwMin, qmisc, dmisc;
if (q >= pCap->halTotalQueues) {
HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid queue num %u\n",
__func__, q);
return AH_FALSE;
}
qi = &ahp->ah_txq[q];
if (qi->tqi_type == HAL_TX_QUEUE_INACTIVE) {
HALDEBUG(ah, HAL_DEBUG_TXQUEUE, "%s: inactive queue %u\n",
__func__, q);
return AH_TRUE; /* XXX??? */
}
HALDEBUG(ah, HAL_DEBUG_TXQUEUE, "%s: reset queue %u\n", __func__, q);
if (qi->tqi_cwmin == HAL_TXQ_USEDEFAULT) {
/*
* Select cwmin according to channel type.
* NB: chan can be NULL during attach
*/
if (chan && IEEE80211_IS_CHAN_B(chan))
chanCwMin = INIT_CWMIN_11B;
else
chanCwMin = INIT_CWMIN;
/* make sure that the CWmin is of the form (2^n - 1) */
for (cwMin = 1; cwMin < chanCwMin; cwMin = (cwMin << 1) | 1)
;
} else
cwMin = qi->tqi_cwmin;
/* set cwMin/Max and AIFS values */
OS_REG_WRITE(ah, AR_DLCL_IFS(q),
SM(cwMin, AR_D_LCL_IFS_CWMIN)
| SM(qi->tqi_cwmax, AR_D_LCL_IFS_CWMAX)
| SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
/* Set retry limit values */
OS_REG_WRITE(ah, AR_DRETRY_LIMIT(q),
SM(INIT_SSH_RETRY, AR_D_RETRY_LIMIT_STA_SH)
| SM(INIT_SLG_RETRY, AR_D_RETRY_LIMIT_STA_LG)
| SM(qi->tqi_lgretry, AR_D_RETRY_LIMIT_FR_LG)
| SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH)
);
/* NB: always enable early termination on the QCU */
qmisc = AR_Q_MISC_DCU_EARLY_TERM_REQ
| SM(AR_Q_MISC_FSP_ASAP, AR_Q_MISC_FSP);
/* NB: always enable DCU to wait for next fragment from QCU */
dmisc = AR_D_MISC_FRAG_WAIT_EN;
/* Enable exponential backoff window */
dmisc |= AR_D_MISC_BKOFF_PERSISTENCE;
/*
* The chip reset default is to use a DCU backoff threshold of 0x2.
* Restore this when programming the DCU MISC register.
*/
dmisc |= 0x2;
/* multiqueue support */
if (qi->tqi_cbrPeriod) {
OS_REG_WRITE(ah, AR_QCBRCFG(q),
SM(qi->tqi_cbrPeriod,AR_Q_CBRCFG_CBR_INTERVAL)
| SM(qi->tqi_cbrOverflowLimit, AR_Q_CBRCFG_CBR_OVF_THRESH));
qmisc = (qmisc &~ AR_Q_MISC_FSP) | AR_Q_MISC_FSP_CBR;
if (qi->tqi_cbrOverflowLimit)
qmisc |= AR_Q_MISC_CBR_EXP_CNTR_LIMIT;
}
if (qi->tqi_readyTime && (qi->tqi_type != HAL_TX_QUEUE_CAB)) {
OS_REG_WRITE(ah, AR_QRDYTIMECFG(q),
SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_INT)
| AR_Q_RDYTIMECFG_ENA);
}
OS_REG_WRITE(ah, AR_DCHNTIME(q),
SM(qi->tqi_burstTime, AR_D_CHNTIME_DUR)
| (qi->tqi_burstTime ? AR_D_CHNTIME_EN : 0));
if (qi->tqi_readyTime &&
(qi->tqi_qflags & HAL_TXQ_RDYTIME_EXP_POLICY_ENABLE))
qmisc |= AR_Q_MISC_RDYTIME_EXP_POLICY;
if (qi->tqi_qflags & HAL_TXQ_DBA_GATED)
qmisc = (qmisc &~ AR_Q_MISC_FSP) | AR_Q_MISC_FSP_DBA_GATED;
if (MS(qmisc, AR_Q_MISC_FSP) != AR_Q_MISC_FSP_ASAP) {
/*
* These are meangingful only when not scheduled asap.
*/
if (qi->tqi_qflags & HAL_TXQ_CBR_DIS_BEMPTY)
qmisc |= AR_Q_MISC_CBR_INCR_DIS0;
else
qmisc &= ~AR_Q_MISC_CBR_INCR_DIS0;
if (qi->tqi_qflags & HAL_TXQ_CBR_DIS_QEMPTY)
qmisc |= AR_Q_MISC_CBR_INCR_DIS1;
else
qmisc &= ~AR_Q_MISC_CBR_INCR_DIS1;
}
if (qi->tqi_qflags & HAL_TXQ_BACKOFF_DISABLE)
dmisc |= AR_D_MISC_POST_FR_BKOFF_DIS;
if (qi->tqi_qflags & HAL_TXQ_FRAG_BURST_BACKOFF_ENABLE)
dmisc |= AR_D_MISC_FRAG_BKOFF_EN;
if (qi->tqi_qflags & HAL_TXQ_ARB_LOCKOUT_GLOBAL)
dmisc |= SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
AR_D_MISC_ARB_LOCKOUT_CNTRL);
else if (qi->tqi_qflags & HAL_TXQ_ARB_LOCKOUT_INTRA)
dmisc |= SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_INTRA_FR,
AR_D_MISC_ARB_LOCKOUT_CNTRL);
if (qi->tqi_qflags & HAL_TXQ_IGNORE_VIRTCOL)
dmisc |= SM(AR_D_MISC_VIR_COL_HANDLING_IGNORE,
AR_D_MISC_VIR_COL_HANDLING);
if (qi->tqi_qflags & HAL_TXQ_SEQNUM_INC_DIS)
dmisc |= AR_D_MISC_SEQ_NUM_INCR_DIS;
/*
* Fillin type-dependent bits. Most of this can be
* removed by specifying the queue parameters in the
* driver; it's here for backwards compatibility.
*/
switch (qi->tqi_type) {
case HAL_TX_QUEUE_BEACON: /* beacon frames */
qmisc |= AR_Q_MISC_FSP_DBA_GATED
| AR_Q_MISC_BEACON_USE
| AR_Q_MISC_CBR_INCR_DIS1;
dmisc |= SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
AR_D_MISC_ARB_LOCKOUT_CNTRL)
| AR_D_MISC_BEACON_USE
| AR_D_MISC_POST_FR_BKOFF_DIS;
break;
case HAL_TX_QUEUE_CAB: /* CAB frames */
/*
* No longer Enable AR_Q_MISC_RDYTIME_EXP_POLICY,
* There is an issue with the CAB Queue
* not properly refreshing the Tx descriptor if
* the TXE clear setting is used.
*/
qmisc |= AR_Q_MISC_FSP_DBA_GATED
| AR_Q_MISC_CBR_INCR_DIS1
| AR_Q_MISC_CBR_INCR_DIS0;
HALDEBUG(ah, HAL_DEBUG_TXQUEUE, "%s: CAB: tqi_readyTime = %d\n",
__func__, qi->tqi_readyTime);
if (qi->tqi_readyTime) {
HALDEBUG(ah, HAL_DEBUG_TXQUEUE,
"%s: using tqi_readyTime\n", __func__);
OS_REG_WRITE(ah, AR_QRDYTIMECFG(q),
SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_INT) |
AR_Q_RDYTIMECFG_ENA);
} else {
int value;
/*
* NB: don't set default ready time if driver
* has explicitly specified something. This is
* here solely for backwards compatibility.
*/
/*
* XXX for now, hard-code a CAB interval of 70%
* XXX of the total beacon interval.
*
* XXX This keeps Merlin and later based MACs
* XXX quite a bit happier (stops stuck beacons,
* XXX which I gather is because of such a long
* XXX cabq time.)
*/
value = (ahp->ah_beaconInterval * 70 / 100)
- (ah->ah_config.ah_sw_beacon_response_time
+ ah->ah_config.ah_dma_beacon_response_time)
- ah->ah_config.ah_additional_swba_backoff;
/*
* XXX Ensure it isn't too low - nothing lower
* XXX than 10 TU
*/
if (value < 10)
value = 10;
HALDEBUG(ah, HAL_DEBUG_TXQUEUE,
"%s: defaulting to rdytime = %d uS\n",
__func__, value);
OS_REG_WRITE(ah, AR_QRDYTIMECFG(q),
SM(TU_TO_USEC(value), AR_Q_RDYTIMECFG_INT) |
AR_Q_RDYTIMECFG_ENA);
}
dmisc |= SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
AR_D_MISC_ARB_LOCKOUT_CNTRL);
break;
case HAL_TX_QUEUE_PSPOLL:
qmisc |= AR_Q_MISC_CBR_INCR_DIS1;
break;
case HAL_TX_QUEUE_UAPSD:
dmisc |= AR_D_MISC_POST_FR_BKOFF_DIS;
break;
default: /* NB: silence compiler */
break;
}
OS_REG_WRITE(ah, AR_QMISC(q), qmisc);
OS_REG_WRITE(ah, AR_DMISC(q), dmisc);
/* Setup compression scratchpad buffer */
/*
* XXX: calling this asynchronously to queue operation can
* cause unexpected behavior!!!
*/
if (qi->tqi_physCompBuf) {
HALASSERT(qi->tqi_type == HAL_TX_QUEUE_DATA ||
qi->tqi_type == HAL_TX_QUEUE_UAPSD);
OS_REG_WRITE(ah, AR_Q_CBBS, (80 + 2*q));
OS_REG_WRITE(ah, AR_Q_CBBA, qi->tqi_physCompBuf);
OS_REG_WRITE(ah, AR_Q_CBC, HAL_COMP_BUF_MAX_SIZE/1024);
OS_REG_WRITE(ah, AR_Q0_MISC + 4*q,
OS_REG_READ(ah, AR_Q0_MISC + 4*q)
| AR_Q_MISC_QCU_COMP_EN);
}
/*
* Always update the secondary interrupt mask registers - this
* could be a new queue getting enabled in a running system or
* hw getting re-initialized during a reset!
*
* Since we don't differentiate between tx interrupts corresponding
* to individual queues - secondary tx mask regs are always unmasked;
* tx interrupts are enabled/disabled for all queues collectively
* using the primary mask reg
*/
if (qi->tqi_qflags & HAL_TXQ_TXOKINT_ENABLE)
ahp->ah_txOkInterruptMask |= 1 << q;
else
ahp->ah_txOkInterruptMask &= ~(1 << q);
if (qi->tqi_qflags & HAL_TXQ_TXERRINT_ENABLE)
ahp->ah_txErrInterruptMask |= 1 << q;
else
ahp->ah_txErrInterruptMask &= ~(1 << q);
if (qi->tqi_qflags & HAL_TXQ_TXDESCINT_ENABLE)
ahp->ah_txDescInterruptMask |= 1 << q;
else
ahp->ah_txDescInterruptMask &= ~(1 << q);
if (qi->tqi_qflags & HAL_TXQ_TXEOLINT_ENABLE)
ahp->ah_txEolInterruptMask |= 1 << q;
else
ahp->ah_txEolInterruptMask &= ~(1 << q);
if (qi->tqi_qflags & HAL_TXQ_TXURNINT_ENABLE)
ahp->ah_txUrnInterruptMask |= 1 << q;
else
ahp->ah_txUrnInterruptMask &= ~(1 << q);
setTxQInterrupts(ah, qi);
return AH_TRUE;
}
#undef TU_TO_USEC
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