2 * Copyright (c) 2008-2009 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 static void ath9k_hw_set_txq_interrupts(struct ath_hw *ah,
20 struct ath9k_tx_queue_info *qi)
22 ath_print(ath9k_hw_common(ah), ATH_DBG_INTERRUPT,
23 "tx ok 0x%x err 0x%x desc 0x%x eol 0x%x urn 0x%x\n",
24 ah->txok_interrupt_mask, ah->txerr_interrupt_mask,
25 ah->txdesc_interrupt_mask, ah->txeol_interrupt_mask,
26 ah->txurn_interrupt_mask);
28 REG_WRITE(ah, AR_IMR_S0,
29 SM(ah->txok_interrupt_mask, AR_IMR_S0_QCU_TXOK)
30 | SM(ah->txdesc_interrupt_mask, AR_IMR_S0_QCU_TXDESC));
31 REG_WRITE(ah, AR_IMR_S1,
32 SM(ah->txerr_interrupt_mask, AR_IMR_S1_QCU_TXERR)
33 | SM(ah->txeol_interrupt_mask, AR_IMR_S1_QCU_TXEOL));
35 ah->imrs2_reg &= ~AR_IMR_S2_QCU_TXURN;
36 ah->imrs2_reg |= (ah->txurn_interrupt_mask & AR_IMR_S2_QCU_TXURN);
37 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
40 u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q)
42 return REG_READ(ah, AR_QTXDP(q));
44 EXPORT_SYMBOL(ath9k_hw_gettxbuf);
46 void ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp)
48 REG_WRITE(ah, AR_QTXDP(q), txdp);
50 EXPORT_SYMBOL(ath9k_hw_puttxbuf);
52 void ath9k_hw_txstart(struct ath_hw *ah, u32 q)
54 ath_print(ath9k_hw_common(ah), ATH_DBG_QUEUE,
55 "Enable TXE on queue: %u\n", q);
56 REG_WRITE(ah, AR_Q_TXE, 1 << q);
58 EXPORT_SYMBOL(ath9k_hw_txstart);
60 u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q)
64 npend = REG_READ(ah, AR_QSTS(q)) & AR_Q_STS_PEND_FR_CNT;
67 if (REG_READ(ah, AR_Q_TXE) & (1 << q))
73 EXPORT_SYMBOL(ath9k_hw_numtxpending);
76 * ath9k_hw_updatetxtriglevel - adjusts the frame trigger level
78 * @ah: atheros hardware struct
79 * @bIncTrigLevel: whether or not the frame trigger level should be updated
81 * The frame trigger level specifies the minimum number of bytes,
82 * in units of 64 bytes, that must be DMA'ed into the PCU TX FIFO
83 * before the PCU will initiate sending the frame on the air. This can
84 * mean we initiate transmit before a full frame is on the PCU TX FIFO.
85 * Resets to 0x1 (meaning 64 bytes or a full frame, whichever occurs
88 * Caution must be taken to ensure to set the frame trigger level based
89 * on the DMA request size. For example if the DMA request size is set to
90 * 128 bytes the trigger level cannot exceed 6 * 64 = 384. This is because
91 * there need to be enough space in the tx FIFO for the requested transfer
92 * size. Hence the tx FIFO will stop with 512 - 128 = 384 bytes. If we set
93 * the threshold to a value beyond 6, then the transmit will hang.
95 * Current dual stream devices have a PCU TX FIFO size of 8 KB.
96 * Current single stream devices have a PCU TX FIFO size of 4 KB, however,
97 * there is a hardware issue which forces us to use 2 KB instead so the
98 * frame trigger level must not exceed 2 KB for these chipsets.
100 bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
102 u32 txcfg, curLevel, newLevel;
103 enum ath9k_int omask;
105 if (ah->tx_trig_level >= ah->config.max_txtrig_level)
108 omask = ath9k_hw_set_interrupts(ah, ah->mask_reg & ~ATH9K_INT_GLOBAL);
110 txcfg = REG_READ(ah, AR_TXCFG);
111 curLevel = MS(txcfg, AR_FTRIG);
114 if (curLevel < ah->config.max_txtrig_level)
116 } else if (curLevel > MIN_TX_FIFO_THRESHOLD)
118 if (newLevel != curLevel)
119 REG_WRITE(ah, AR_TXCFG,
120 (txcfg & ~AR_FTRIG) | SM(newLevel, AR_FTRIG));
122 ath9k_hw_set_interrupts(ah, omask);
124 ah->tx_trig_level = newLevel;
126 return newLevel != curLevel;
128 EXPORT_SYMBOL(ath9k_hw_updatetxtriglevel);
130 bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
132 #define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
133 #define ATH9K_TIME_QUANTUM 100 /* usec */
134 struct ath_common *common = ath9k_hw_common(ah);
135 struct ath9k_hw_capabilities *pCap = &ah->caps;
136 struct ath9k_tx_queue_info *qi;
138 u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
140 if (q >= pCap->total_queues) {
141 ath_print(common, ATH_DBG_QUEUE, "Stopping TX DMA, "
142 "invalid queue: %u\n", q);
147 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
148 ath_print(common, ATH_DBG_QUEUE, "Stopping TX DMA, "
149 "inactive queue: %u\n", q);
153 REG_WRITE(ah, AR_Q_TXD, 1 << q);
155 for (wait = wait_time; wait != 0; wait--) {
156 if (ath9k_hw_numtxpending(ah, q) == 0)
158 udelay(ATH9K_TIME_QUANTUM);
161 if (ath9k_hw_numtxpending(ah, q)) {
162 ath_print(common, ATH_DBG_QUEUE,
163 "%s: Num of pending TX Frames %d on Q %d\n",
164 __func__, ath9k_hw_numtxpending(ah, q), q);
166 for (j = 0; j < 2; j++) {
167 tsfLow = REG_READ(ah, AR_TSF_L32);
168 REG_WRITE(ah, AR_QUIET2,
169 SM(10, AR_QUIET2_QUIET_DUR));
170 REG_WRITE(ah, AR_QUIET_PERIOD, 100);
171 REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
172 REG_SET_BIT(ah, AR_TIMER_MODE,
175 if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
178 ath_print(common, ATH_DBG_QUEUE,
179 "TSF has moved while trying to set "
180 "quiet time TSF: 0x%08x\n", tsfLow);
183 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
186 REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
189 while (ath9k_hw_numtxpending(ah, q)) {
191 ath_print(common, ATH_DBG_FATAL,
192 "Failed to stop TX DMA in 100 "
193 "msec after killing last frame\n");
196 udelay(ATH9K_TIME_QUANTUM);
199 REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
202 REG_WRITE(ah, AR_Q_TXD, 0);
205 #undef ATH9K_TX_STOP_DMA_TIMEOUT
206 #undef ATH9K_TIME_QUANTUM
208 EXPORT_SYMBOL(ath9k_hw_stoptxdma);
210 void ath9k_hw_filltxdesc(struct ath_hw *ah, struct ath_desc *ds,
211 u32 segLen, bool firstSeg,
212 bool lastSeg, const struct ath_desc *ds0)
214 struct ar5416_desc *ads = AR5416DESC(ds);
217 ads->ds_ctl1 |= segLen | (lastSeg ? 0 : AR_TxMore);
218 } else if (lastSeg) {
220 ads->ds_ctl1 = segLen;
221 ads->ds_ctl2 = AR5416DESC_CONST(ds0)->ds_ctl2;
222 ads->ds_ctl3 = AR5416DESC_CONST(ds0)->ds_ctl3;
225 ads->ds_ctl1 = segLen | AR_TxMore;
229 ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
230 ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
231 ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
232 ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
233 ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
235 EXPORT_SYMBOL(ath9k_hw_filltxdesc);
237 void ath9k_hw_cleartxdesc(struct ath_hw *ah, struct ath_desc *ds)
239 struct ar5416_desc *ads = AR5416DESC(ds);
241 ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
242 ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
243 ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
244 ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
245 ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
247 EXPORT_SYMBOL(ath9k_hw_cleartxdesc);
249 int ath9k_hw_txprocdesc(struct ath_hw *ah, struct ath_desc *ds)
251 struct ar5416_desc *ads = AR5416DESC(ds);
253 if ((ads->ds_txstatus9 & AR_TxDone) == 0)
256 ds->ds_txstat.ts_seqnum = MS(ads->ds_txstatus9, AR_SeqNum);
257 ds->ds_txstat.ts_tstamp = ads->AR_SendTimestamp;
258 ds->ds_txstat.ts_status = 0;
259 ds->ds_txstat.ts_flags = 0;
261 if (ads->ds_txstatus1 & AR_FrmXmitOK)
262 ds->ds_txstat.ts_status |= ATH9K_TX_ACKED;
263 if (ads->ds_txstatus1 & AR_ExcessiveRetries)
264 ds->ds_txstat.ts_status |= ATH9K_TXERR_XRETRY;
265 if (ads->ds_txstatus1 & AR_Filtered)
266 ds->ds_txstat.ts_status |= ATH9K_TXERR_FILT;
267 if (ads->ds_txstatus1 & AR_FIFOUnderrun) {
268 ds->ds_txstat.ts_status |= ATH9K_TXERR_FIFO;
269 ath9k_hw_updatetxtriglevel(ah, true);
271 if (ads->ds_txstatus9 & AR_TxOpExceeded)
272 ds->ds_txstat.ts_status |= ATH9K_TXERR_XTXOP;
273 if (ads->ds_txstatus1 & AR_TxTimerExpired)
274 ds->ds_txstat.ts_status |= ATH9K_TXERR_TIMER_EXPIRED;
276 if (ads->ds_txstatus1 & AR_DescCfgErr)
277 ds->ds_txstat.ts_flags |= ATH9K_TX_DESC_CFG_ERR;
278 if (ads->ds_txstatus1 & AR_TxDataUnderrun) {
279 ds->ds_txstat.ts_flags |= ATH9K_TX_DATA_UNDERRUN;
280 ath9k_hw_updatetxtriglevel(ah, true);
282 if (ads->ds_txstatus1 & AR_TxDelimUnderrun) {
283 ds->ds_txstat.ts_flags |= ATH9K_TX_DELIM_UNDERRUN;
284 ath9k_hw_updatetxtriglevel(ah, true);
286 if (ads->ds_txstatus0 & AR_TxBaStatus) {
287 ds->ds_txstat.ts_flags |= ATH9K_TX_BA;
288 ds->ds_txstat.ba_low = ads->AR_BaBitmapLow;
289 ds->ds_txstat.ba_high = ads->AR_BaBitmapHigh;
292 ds->ds_txstat.ts_rateindex = MS(ads->ds_txstatus9, AR_FinalTxIdx);
293 switch (ds->ds_txstat.ts_rateindex) {
295 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate0);
298 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate1);
301 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate2);
304 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate3);
308 ds->ds_txstat.ts_rssi = MS(ads->ds_txstatus5, AR_TxRSSICombined);
309 ds->ds_txstat.ts_rssi_ctl0 = MS(ads->ds_txstatus0, AR_TxRSSIAnt00);
310 ds->ds_txstat.ts_rssi_ctl1 = MS(ads->ds_txstatus0, AR_TxRSSIAnt01);
311 ds->ds_txstat.ts_rssi_ctl2 = MS(ads->ds_txstatus0, AR_TxRSSIAnt02);
312 ds->ds_txstat.ts_rssi_ext0 = MS(ads->ds_txstatus5, AR_TxRSSIAnt10);
313 ds->ds_txstat.ts_rssi_ext1 = MS(ads->ds_txstatus5, AR_TxRSSIAnt11);
314 ds->ds_txstat.ts_rssi_ext2 = MS(ads->ds_txstatus5, AR_TxRSSIAnt12);
315 ds->ds_txstat.evm0 = ads->AR_TxEVM0;
316 ds->ds_txstat.evm1 = ads->AR_TxEVM1;
317 ds->ds_txstat.evm2 = ads->AR_TxEVM2;
318 ds->ds_txstat.ts_shortretry = MS(ads->ds_txstatus1, AR_RTSFailCnt);
319 ds->ds_txstat.ts_longretry = MS(ads->ds_txstatus1, AR_DataFailCnt);
320 ds->ds_txstat.ts_virtcol = MS(ads->ds_txstatus1, AR_VirtRetryCnt);
321 ds->ds_txstat.ts_antenna = 0;
325 EXPORT_SYMBOL(ath9k_hw_txprocdesc);
327 void ath9k_hw_set11n_txdesc(struct ath_hw *ah, struct ath_desc *ds,
328 u32 pktLen, enum ath9k_pkt_type type, u32 txPower,
329 u32 keyIx, enum ath9k_key_type keyType, u32 flags)
331 struct ar5416_desc *ads = AR5416DESC(ds);
333 txPower += ah->txpower_indexoffset;
337 ads->ds_ctl0 = (pktLen & AR_FrameLen)
338 | (flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
339 | SM(txPower, AR_XmitPower)
340 | (flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
341 | (flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
342 | (flags & ATH9K_TXDESC_INTREQ ? AR_TxIntrReq : 0)
343 | (keyIx != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0);
346 (keyIx != ATH9K_TXKEYIX_INVALID ? SM(keyIx, AR_DestIdx) : 0)
347 | SM(type, AR_FrameType)
348 | (flags & ATH9K_TXDESC_NOACK ? AR_NoAck : 0)
349 | (flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0)
350 | (flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0);
352 ads->ds_ctl6 = SM(keyType, AR_EncrType);
354 if (AR_SREV_9285(ah)) {
361 EXPORT_SYMBOL(ath9k_hw_set11n_txdesc);
363 void ath9k_hw_set11n_ratescenario(struct ath_hw *ah, struct ath_desc *ds,
364 struct ath_desc *lastds,
365 u32 durUpdateEn, u32 rtsctsRate,
367 struct ath9k_11n_rate_series series[],
368 u32 nseries, u32 flags)
370 struct ar5416_desc *ads = AR5416DESC(ds);
371 struct ar5416_desc *last_ads = AR5416DESC(lastds);
374 if (flags & (ATH9K_TXDESC_RTSENA | ATH9K_TXDESC_CTSENA)) {
375 ds_ctl0 = ads->ds_ctl0;
377 if (flags & ATH9K_TXDESC_RTSENA) {
378 ds_ctl0 &= ~AR_CTSEnable;
379 ds_ctl0 |= AR_RTSEnable;
381 ds_ctl0 &= ~AR_RTSEnable;
382 ds_ctl0 |= AR_CTSEnable;
385 ads->ds_ctl0 = ds_ctl0;
388 (ads->ds_ctl0 & ~(AR_RTSEnable | AR_CTSEnable));
391 ads->ds_ctl2 = set11nTries(series, 0)
392 | set11nTries(series, 1)
393 | set11nTries(series, 2)
394 | set11nTries(series, 3)
395 | (durUpdateEn ? AR_DurUpdateEna : 0)
396 | SM(0, AR_BurstDur);
398 ads->ds_ctl3 = set11nRate(series, 0)
399 | set11nRate(series, 1)
400 | set11nRate(series, 2)
401 | set11nRate(series, 3);
403 ads->ds_ctl4 = set11nPktDurRTSCTS(series, 0)
404 | set11nPktDurRTSCTS(series, 1);
406 ads->ds_ctl5 = set11nPktDurRTSCTS(series, 2)
407 | set11nPktDurRTSCTS(series, 3);
409 ads->ds_ctl7 = set11nRateFlags(series, 0)
410 | set11nRateFlags(series, 1)
411 | set11nRateFlags(series, 2)
412 | set11nRateFlags(series, 3)
413 | SM(rtsctsRate, AR_RTSCTSRate);
414 last_ads->ds_ctl2 = ads->ds_ctl2;
415 last_ads->ds_ctl3 = ads->ds_ctl3;
417 EXPORT_SYMBOL(ath9k_hw_set11n_ratescenario);
419 void ath9k_hw_set11n_aggr_first(struct ath_hw *ah, struct ath_desc *ds,
422 struct ar5416_desc *ads = AR5416DESC(ds);
424 ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
425 ads->ds_ctl6 &= ~AR_AggrLen;
426 ads->ds_ctl6 |= SM(aggrLen, AR_AggrLen);
428 EXPORT_SYMBOL(ath9k_hw_set11n_aggr_first);
430 void ath9k_hw_set11n_aggr_middle(struct ath_hw *ah, struct ath_desc *ds,
433 struct ar5416_desc *ads = AR5416DESC(ds);
436 ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
439 ctl6 &= ~AR_PadDelim;
440 ctl6 |= SM(numDelims, AR_PadDelim);
443 EXPORT_SYMBOL(ath9k_hw_set11n_aggr_middle);
445 void ath9k_hw_set11n_aggr_last(struct ath_hw *ah, struct ath_desc *ds)
447 struct ar5416_desc *ads = AR5416DESC(ds);
449 ads->ds_ctl1 |= AR_IsAggr;
450 ads->ds_ctl1 &= ~AR_MoreAggr;
451 ads->ds_ctl6 &= ~AR_PadDelim;
453 EXPORT_SYMBOL(ath9k_hw_set11n_aggr_last);
455 void ath9k_hw_clr11n_aggr(struct ath_hw *ah, struct ath_desc *ds)
457 struct ar5416_desc *ads = AR5416DESC(ds);
459 ads->ds_ctl1 &= (~AR_IsAggr & ~AR_MoreAggr);
461 EXPORT_SYMBOL(ath9k_hw_clr11n_aggr);
463 void ath9k_hw_set11n_burstduration(struct ath_hw *ah, struct ath_desc *ds,
466 struct ar5416_desc *ads = AR5416DESC(ds);
468 ads->ds_ctl2 &= ~AR_BurstDur;
469 ads->ds_ctl2 |= SM(burstDuration, AR_BurstDur);
471 EXPORT_SYMBOL(ath9k_hw_set11n_burstduration);
473 void ath9k_hw_set11n_virtualmorefrag(struct ath_hw *ah, struct ath_desc *ds,
476 struct ar5416_desc *ads = AR5416DESC(ds);
479 ads->ds_ctl0 |= AR_VirtMoreFrag;
481 ads->ds_ctl0 &= ~AR_VirtMoreFrag;
484 void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
486 *txqs &= ah->intr_txqs;
487 ah->intr_txqs &= ~(*txqs);
489 EXPORT_SYMBOL(ath9k_hw_gettxintrtxqs);
491 bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
492 const struct ath9k_tx_queue_info *qinfo)
495 struct ath_common *common = ath9k_hw_common(ah);
496 struct ath9k_hw_capabilities *pCap = &ah->caps;
497 struct ath9k_tx_queue_info *qi;
499 if (q >= pCap->total_queues) {
500 ath_print(common, ATH_DBG_QUEUE, "Set TXQ properties, "
501 "invalid queue: %u\n", q);
506 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
507 ath_print(common, ATH_DBG_QUEUE, "Set TXQ properties, "
508 "inactive queue: %u\n", q);
512 ath_print(common, ATH_DBG_QUEUE, "Set queue properties for: %u\n", q);
514 qi->tqi_ver = qinfo->tqi_ver;
515 qi->tqi_subtype = qinfo->tqi_subtype;
516 qi->tqi_qflags = qinfo->tqi_qflags;
517 qi->tqi_priority = qinfo->tqi_priority;
518 if (qinfo->tqi_aifs != ATH9K_TXQ_USEDEFAULT)
519 qi->tqi_aifs = min(qinfo->tqi_aifs, 255U);
521 qi->tqi_aifs = INIT_AIFS;
522 if (qinfo->tqi_cwmin != ATH9K_TXQ_USEDEFAULT) {
523 cw = min(qinfo->tqi_cwmin, 1024U);
525 while (qi->tqi_cwmin < cw)
526 qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1;
528 qi->tqi_cwmin = qinfo->tqi_cwmin;
529 if (qinfo->tqi_cwmax != ATH9K_TXQ_USEDEFAULT) {
530 cw = min(qinfo->tqi_cwmax, 1024U);
532 while (qi->tqi_cwmax < cw)
533 qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1;
535 qi->tqi_cwmax = INIT_CWMAX;
537 if (qinfo->tqi_shretry != 0)
538 qi->tqi_shretry = min((u32) qinfo->tqi_shretry, 15U);
540 qi->tqi_shretry = INIT_SH_RETRY;
541 if (qinfo->tqi_lgretry != 0)
542 qi->tqi_lgretry = min((u32) qinfo->tqi_lgretry, 15U);
544 qi->tqi_lgretry = INIT_LG_RETRY;
545 qi->tqi_cbrPeriod = qinfo->tqi_cbrPeriod;
546 qi->tqi_cbrOverflowLimit = qinfo->tqi_cbrOverflowLimit;
547 qi->tqi_burstTime = qinfo->tqi_burstTime;
548 qi->tqi_readyTime = qinfo->tqi_readyTime;
550 switch (qinfo->tqi_subtype) {
552 if (qi->tqi_type == ATH9K_TX_QUEUE_DATA)
553 qi->tqi_intFlags = ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS;
561 EXPORT_SYMBOL(ath9k_hw_set_txq_props);
563 bool ath9k_hw_get_txq_props(struct ath_hw *ah, int q,
564 struct ath9k_tx_queue_info *qinfo)
566 struct ath_common *common = ath9k_hw_common(ah);
567 struct ath9k_hw_capabilities *pCap = &ah->caps;
568 struct ath9k_tx_queue_info *qi;
570 if (q >= pCap->total_queues) {
571 ath_print(common, ATH_DBG_QUEUE, "Get TXQ properties, "
572 "invalid queue: %u\n", q);
577 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
578 ath_print(common, ATH_DBG_QUEUE, "Get TXQ properties, "
579 "inactive queue: %u\n", q);
583 qinfo->tqi_qflags = qi->tqi_qflags;
584 qinfo->tqi_ver = qi->tqi_ver;
585 qinfo->tqi_subtype = qi->tqi_subtype;
586 qinfo->tqi_qflags = qi->tqi_qflags;
587 qinfo->tqi_priority = qi->tqi_priority;
588 qinfo->tqi_aifs = qi->tqi_aifs;
589 qinfo->tqi_cwmin = qi->tqi_cwmin;
590 qinfo->tqi_cwmax = qi->tqi_cwmax;
591 qinfo->tqi_shretry = qi->tqi_shretry;
592 qinfo->tqi_lgretry = qi->tqi_lgretry;
593 qinfo->tqi_cbrPeriod = qi->tqi_cbrPeriod;
594 qinfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit;
595 qinfo->tqi_burstTime = qi->tqi_burstTime;
596 qinfo->tqi_readyTime = qi->tqi_readyTime;
600 EXPORT_SYMBOL(ath9k_hw_get_txq_props);
602 int ath9k_hw_setuptxqueue(struct ath_hw *ah, enum ath9k_tx_queue type,
603 const struct ath9k_tx_queue_info *qinfo)
605 struct ath_common *common = ath9k_hw_common(ah);
606 struct ath9k_tx_queue_info *qi;
607 struct ath9k_hw_capabilities *pCap = &ah->caps;
611 case ATH9K_TX_QUEUE_BEACON:
612 q = pCap->total_queues - 1;
614 case ATH9K_TX_QUEUE_CAB:
615 q = pCap->total_queues - 2;
617 case ATH9K_TX_QUEUE_PSPOLL:
620 case ATH9K_TX_QUEUE_UAPSD:
621 q = pCap->total_queues - 3;
623 case ATH9K_TX_QUEUE_DATA:
624 for (q = 0; q < pCap->total_queues; q++)
625 if (ah->txq[q].tqi_type ==
626 ATH9K_TX_QUEUE_INACTIVE)
628 if (q == pCap->total_queues) {
629 ath_print(common, ATH_DBG_FATAL,
630 "No available TX queue\n");
635 ath_print(common, ATH_DBG_FATAL,
636 "Invalid TX queue type: %u\n", type);
640 ath_print(common, ATH_DBG_QUEUE, "Setup TX queue: %u\n", q);
643 if (qi->tqi_type != ATH9K_TX_QUEUE_INACTIVE) {
644 ath_print(common, ATH_DBG_FATAL,
645 "TX queue: %u already active\n", q);
648 memset(qi, 0, sizeof(struct ath9k_tx_queue_info));
652 TXQ_FLAG_TXOKINT_ENABLE
653 | TXQ_FLAG_TXERRINT_ENABLE
654 | TXQ_FLAG_TXDESCINT_ENABLE | TXQ_FLAG_TXURNINT_ENABLE;
655 qi->tqi_aifs = INIT_AIFS;
656 qi->tqi_cwmin = ATH9K_TXQ_USEDEFAULT;
657 qi->tqi_cwmax = INIT_CWMAX;
658 qi->tqi_shretry = INIT_SH_RETRY;
659 qi->tqi_lgretry = INIT_LG_RETRY;
660 qi->tqi_physCompBuf = 0;
662 qi->tqi_physCompBuf = qinfo->tqi_physCompBuf;
663 (void) ath9k_hw_set_txq_props(ah, q, qinfo);
668 EXPORT_SYMBOL(ath9k_hw_setuptxqueue);
670 bool ath9k_hw_releasetxqueue(struct ath_hw *ah, u32 q)
672 struct ath9k_hw_capabilities *pCap = &ah->caps;
673 struct ath_common *common = ath9k_hw_common(ah);
674 struct ath9k_tx_queue_info *qi;
676 if (q >= pCap->total_queues) {
677 ath_print(common, ATH_DBG_QUEUE, "Release TXQ, "
678 "invalid queue: %u\n", q);
682 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
683 ath_print(common, ATH_DBG_QUEUE, "Release TXQ, "
684 "inactive queue: %u\n", q);
688 ath_print(common, ATH_DBG_QUEUE, "Release TX queue: %u\n", q);
690 qi->tqi_type = ATH9K_TX_QUEUE_INACTIVE;
691 ah->txok_interrupt_mask &= ~(1 << q);
692 ah->txerr_interrupt_mask &= ~(1 << q);
693 ah->txdesc_interrupt_mask &= ~(1 << q);
694 ah->txeol_interrupt_mask &= ~(1 << q);
695 ah->txurn_interrupt_mask &= ~(1 << q);
696 ath9k_hw_set_txq_interrupts(ah, qi);
700 EXPORT_SYMBOL(ath9k_hw_releasetxqueue);
702 bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q)
704 struct ath9k_hw_capabilities *pCap = &ah->caps;
705 struct ath_common *common = ath9k_hw_common(ah);
706 struct ath9k_channel *chan = ah->curchan;
707 struct ath9k_tx_queue_info *qi;
708 u32 cwMin, chanCwMin, value;
710 if (q >= pCap->total_queues) {
711 ath_print(common, ATH_DBG_QUEUE, "Reset TXQ, "
712 "invalid queue: %u\n", q);
717 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
718 ath_print(common, ATH_DBG_QUEUE, "Reset TXQ, "
719 "inactive queue: %u\n", q);
723 ath_print(common, ATH_DBG_QUEUE, "Reset TX queue: %u\n", q);
725 if (qi->tqi_cwmin == ATH9K_TXQ_USEDEFAULT) {
726 if (chan && IS_CHAN_B(chan))
727 chanCwMin = INIT_CWMIN_11B;
729 chanCwMin = INIT_CWMIN;
731 for (cwMin = 1; cwMin < chanCwMin; cwMin = (cwMin << 1) | 1);
733 cwMin = qi->tqi_cwmin;
735 REG_WRITE(ah, AR_DLCL_IFS(q),
736 SM(cwMin, AR_D_LCL_IFS_CWMIN) |
737 SM(qi->tqi_cwmax, AR_D_LCL_IFS_CWMAX) |
738 SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
740 REG_WRITE(ah, AR_DRETRY_LIMIT(q),
741 SM(INIT_SSH_RETRY, AR_D_RETRY_LIMIT_STA_SH) |
742 SM(INIT_SLG_RETRY, AR_D_RETRY_LIMIT_STA_LG) |
743 SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH));
745 REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ);
746 REG_WRITE(ah, AR_DMISC(q),
747 AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2);
749 if (qi->tqi_cbrPeriod) {
750 REG_WRITE(ah, AR_QCBRCFG(q),
751 SM(qi->tqi_cbrPeriod, AR_Q_CBRCFG_INTERVAL) |
752 SM(qi->tqi_cbrOverflowLimit, AR_Q_CBRCFG_OVF_THRESH));
753 REG_WRITE(ah, AR_QMISC(q),
754 REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_FSP_CBR |
755 (qi->tqi_cbrOverflowLimit ?
756 AR_Q_MISC_CBR_EXP_CNTR_LIMIT_EN : 0));
758 if (qi->tqi_readyTime && (qi->tqi_type != ATH9K_TX_QUEUE_CAB)) {
759 REG_WRITE(ah, AR_QRDYTIMECFG(q),
760 SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_DURATION) |
764 REG_WRITE(ah, AR_DCHNTIME(q),
765 SM(qi->tqi_burstTime, AR_D_CHNTIME_DUR) |
766 (qi->tqi_burstTime ? AR_D_CHNTIME_EN : 0));
768 if (qi->tqi_burstTime
769 && (qi->tqi_qflags & TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE)) {
770 REG_WRITE(ah, AR_QMISC(q),
771 REG_READ(ah, AR_QMISC(q)) |
772 AR_Q_MISC_RDYTIME_EXP_POLICY);
776 if (qi->tqi_qflags & TXQ_FLAG_BACKOFF_DISABLE) {
777 REG_WRITE(ah, AR_DMISC(q),
778 REG_READ(ah, AR_DMISC(q)) |
779 AR_D_MISC_POST_FR_BKOFF_DIS);
781 if (qi->tqi_qflags & TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE) {
782 REG_WRITE(ah, AR_DMISC(q),
783 REG_READ(ah, AR_DMISC(q)) |
784 AR_D_MISC_FRAG_BKOFF_EN);
786 switch (qi->tqi_type) {
787 case ATH9K_TX_QUEUE_BEACON:
788 REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
789 | AR_Q_MISC_FSP_DBA_GATED
790 | AR_Q_MISC_BEACON_USE
791 | AR_Q_MISC_CBR_INCR_DIS1);
793 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
794 | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
795 AR_D_MISC_ARB_LOCKOUT_CNTRL_S)
796 | AR_D_MISC_BEACON_USE
797 | AR_D_MISC_POST_FR_BKOFF_DIS);
799 case ATH9K_TX_QUEUE_CAB:
800 REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
801 | AR_Q_MISC_FSP_DBA_GATED
802 | AR_Q_MISC_CBR_INCR_DIS1
803 | AR_Q_MISC_CBR_INCR_DIS0);
804 value = (qi->tqi_readyTime -
805 (ah->config.sw_beacon_response_time -
806 ah->config.dma_beacon_response_time) -
807 ah->config.additional_swba_backoff) * 1024;
808 REG_WRITE(ah, AR_QRDYTIMECFG(q),
809 value | AR_Q_RDYTIMECFG_EN);
810 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
811 | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
812 AR_D_MISC_ARB_LOCKOUT_CNTRL_S));
814 case ATH9K_TX_QUEUE_PSPOLL:
815 REG_WRITE(ah, AR_QMISC(q),
816 REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_CBR_INCR_DIS1);
818 case ATH9K_TX_QUEUE_UAPSD:
819 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q)) |
820 AR_D_MISC_POST_FR_BKOFF_DIS);
826 if (qi->tqi_intFlags & ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS) {
827 REG_WRITE(ah, AR_DMISC(q),
828 REG_READ(ah, AR_DMISC(q)) |
829 SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
830 AR_D_MISC_ARB_LOCKOUT_CNTRL) |
831 AR_D_MISC_POST_FR_BKOFF_DIS);
834 if (qi->tqi_qflags & TXQ_FLAG_TXOKINT_ENABLE)
835 ah->txok_interrupt_mask |= 1 << q;
837 ah->txok_interrupt_mask &= ~(1 << q);
838 if (qi->tqi_qflags & TXQ_FLAG_TXERRINT_ENABLE)
839 ah->txerr_interrupt_mask |= 1 << q;
841 ah->txerr_interrupt_mask &= ~(1 << q);
842 if (qi->tqi_qflags & TXQ_FLAG_TXDESCINT_ENABLE)
843 ah->txdesc_interrupt_mask |= 1 << q;
845 ah->txdesc_interrupt_mask &= ~(1 << q);
846 if (qi->tqi_qflags & TXQ_FLAG_TXEOLINT_ENABLE)
847 ah->txeol_interrupt_mask |= 1 << q;
849 ah->txeol_interrupt_mask &= ~(1 << q);
850 if (qi->tqi_qflags & TXQ_FLAG_TXURNINT_ENABLE)
851 ah->txurn_interrupt_mask |= 1 << q;
853 ah->txurn_interrupt_mask &= ~(1 << q);
854 ath9k_hw_set_txq_interrupts(ah, qi);
858 EXPORT_SYMBOL(ath9k_hw_resettxqueue);
860 int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
861 u32 pa, struct ath_desc *nds, u64 tsf)
863 struct ar5416_desc ads;
864 struct ar5416_desc *adsp = AR5416DESC(ds);
867 if ((adsp->ds_rxstatus8 & AR_RxDone) == 0)
870 ads.u.rx = adsp->u.rx;
872 ds->ds_rxstat.rs_status = 0;
873 ds->ds_rxstat.rs_flags = 0;
875 ds->ds_rxstat.rs_datalen = ads.ds_rxstatus1 & AR_DataLen;
876 ds->ds_rxstat.rs_tstamp = ads.AR_RcvTimestamp;
878 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr) {
879 ds->ds_rxstat.rs_rssi = ATH9K_RSSI_BAD;
880 ds->ds_rxstat.rs_rssi_ctl0 = ATH9K_RSSI_BAD;
881 ds->ds_rxstat.rs_rssi_ctl1 = ATH9K_RSSI_BAD;
882 ds->ds_rxstat.rs_rssi_ctl2 = ATH9K_RSSI_BAD;
883 ds->ds_rxstat.rs_rssi_ext0 = ATH9K_RSSI_BAD;
884 ds->ds_rxstat.rs_rssi_ext1 = ATH9K_RSSI_BAD;
885 ds->ds_rxstat.rs_rssi_ext2 = ATH9K_RSSI_BAD;
887 ds->ds_rxstat.rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
888 ds->ds_rxstat.rs_rssi_ctl0 = MS(ads.ds_rxstatus0,
890 ds->ds_rxstat.rs_rssi_ctl1 = MS(ads.ds_rxstatus0,
892 ds->ds_rxstat.rs_rssi_ctl2 = MS(ads.ds_rxstatus0,
894 ds->ds_rxstat.rs_rssi_ext0 = MS(ads.ds_rxstatus4,
896 ds->ds_rxstat.rs_rssi_ext1 = MS(ads.ds_rxstatus4,
898 ds->ds_rxstat.rs_rssi_ext2 = MS(ads.ds_rxstatus4,
901 if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
902 ds->ds_rxstat.rs_keyix = MS(ads.ds_rxstatus8, AR_KeyIdx);
904 ds->ds_rxstat.rs_keyix = ATH9K_RXKEYIX_INVALID;
906 ds->ds_rxstat.rs_rate = RXSTATUS_RATE(ah, (&ads));
907 ds->ds_rxstat.rs_more = (ads.ds_rxstatus1 & AR_RxMore) ? 1 : 0;
909 ds->ds_rxstat.rs_isaggr = (ads.ds_rxstatus8 & AR_RxAggr) ? 1 : 0;
910 ds->ds_rxstat.rs_moreaggr =
911 (ads.ds_rxstatus8 & AR_RxMoreAggr) ? 1 : 0;
912 ds->ds_rxstat.rs_antenna = MS(ads.ds_rxstatus3, AR_RxAntenna);
913 ds->ds_rxstat.rs_flags =
914 (ads.ds_rxstatus3 & AR_GI) ? ATH9K_RX_GI : 0;
915 ds->ds_rxstat.rs_flags |=
916 (ads.ds_rxstatus3 & AR_2040) ? ATH9K_RX_2040 : 0;
918 if (ads.ds_rxstatus8 & AR_PreDelimCRCErr)
919 ds->ds_rxstat.rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
920 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr)
921 ds->ds_rxstat.rs_flags |= ATH9K_RX_DELIM_CRC_POST;
922 if (ads.ds_rxstatus8 & AR_DecryptBusyErr)
923 ds->ds_rxstat.rs_flags |= ATH9K_RX_DECRYPT_BUSY;
925 if ((ads.ds_rxstatus8 & AR_RxFrameOK) == 0) {
926 if (ads.ds_rxstatus8 & AR_CRCErr)
927 ds->ds_rxstat.rs_status |= ATH9K_RXERR_CRC;
928 else if (ads.ds_rxstatus8 & AR_PHYErr) {
929 ds->ds_rxstat.rs_status |= ATH9K_RXERR_PHY;
930 phyerr = MS(ads.ds_rxstatus8, AR_PHYErrCode);
931 ds->ds_rxstat.rs_phyerr = phyerr;
932 } else if (ads.ds_rxstatus8 & AR_DecryptCRCErr)
933 ds->ds_rxstat.rs_status |= ATH9K_RXERR_DECRYPT;
934 else if (ads.ds_rxstatus8 & AR_MichaelErr)
935 ds->ds_rxstat.rs_status |= ATH9K_RXERR_MIC;
940 EXPORT_SYMBOL(ath9k_hw_rxprocdesc);
942 void ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
945 struct ar5416_desc *ads = AR5416DESC(ds);
946 struct ath9k_hw_capabilities *pCap = &ah->caps;
948 ads->ds_ctl1 = size & AR_BufLen;
949 if (flags & ATH9K_RXDESC_INTREQ)
950 ads->ds_ctl1 |= AR_RxIntrReq;
952 ads->ds_rxstatus8 &= ~AR_RxDone;
953 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
954 memset(&(ads->u), 0, sizeof(ads->u));
956 EXPORT_SYMBOL(ath9k_hw_setuprxdesc);
959 * This can stop or re-enables RX.
961 * If bool is set this will kill any frame which is currently being
962 * transferred between the MAC and baseband and also prevent any new
963 * frames from getting started.
965 bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set)
970 REG_SET_BIT(ah, AR_DIAG_SW,
971 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
973 if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE,
974 0, AH_WAIT_TIMEOUT)) {
975 REG_CLR_BIT(ah, AR_DIAG_SW,
979 reg = REG_READ(ah, AR_OBS_BUS_1);
980 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
981 "RX failed to go idle in 10 ms RXSM=0x%x\n",
987 REG_CLR_BIT(ah, AR_DIAG_SW,
988 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
993 EXPORT_SYMBOL(ath9k_hw_setrxabort);
995 void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp)
997 REG_WRITE(ah, AR_RXDP, rxdp);
999 EXPORT_SYMBOL(ath9k_hw_putrxbuf);
1001 void ath9k_hw_rxena(struct ath_hw *ah)
1003 REG_WRITE(ah, AR_CR, AR_CR_RXE);
1005 EXPORT_SYMBOL(ath9k_hw_rxena);
1007 void ath9k_hw_startpcureceive(struct ath_hw *ah)
1009 ath9k_enable_mib_counters(ah);
1011 ath9k_ani_reset(ah);
1013 REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
1015 EXPORT_SYMBOL(ath9k_hw_startpcureceive);
1017 void ath9k_hw_stoppcurecv(struct ath_hw *ah)
1019 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
1021 ath9k_hw_disable_mib_counters(ah);
1023 EXPORT_SYMBOL(ath9k_hw_stoppcurecv);
1025 bool ath9k_hw_stopdmarecv(struct ath_hw *ah)
1027 #define AH_RX_STOP_DMA_TIMEOUT 10000 /* usec */
1028 #define AH_RX_TIME_QUANTUM 100 /* usec */
1029 struct ath_common *common = ath9k_hw_common(ah);
1032 REG_WRITE(ah, AR_CR, AR_CR_RXD);
1034 /* Wait for rx enable bit to go low */
1035 for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) {
1036 if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0)
1038 udelay(AH_TIME_QUANTUM);
1042 ath_print(common, ATH_DBG_FATAL,
1043 "DMA failed to stop in %d ms "
1044 "AR_CR=0x%08x AR_DIAG_SW=0x%08x\n",
1045 AH_RX_STOP_DMA_TIMEOUT / 1000,
1046 REG_READ(ah, AR_CR),
1047 REG_READ(ah, AR_DIAG_SW));
1053 #undef AH_RX_TIME_QUANTUM
1054 #undef AH_RX_STOP_DMA_TIMEOUT
1056 EXPORT_SYMBOL(ath9k_hw_stopdmarecv);
1058 int ath9k_hw_beaconq_setup(struct ath_hw *ah)
1060 struct ath9k_tx_queue_info qi;
1062 memset(&qi, 0, sizeof(qi));
1066 /* NB: don't enable any interrupts */
1067 return ath9k_hw_setuptxqueue(ah, ATH9K_TX_QUEUE_BEACON, &qi);
1069 EXPORT_SYMBOL(ath9k_hw_beaconq_setup);