1 /*
2 * Copyright (c) 2008-2009 Atheros Communications Inc.
3 *
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.
7 *
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.
15 */
16
17 #include "ath9k.h"
18
19 static void ath9k_hw_set_txq_interrupts(struct ath_hw *ah,
20 struct ath9k_tx_queue_info *qi)
21 {
22 DPRINTF(ah->ah_sc, 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);
27
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));
34 REG_RMW_FIELD(ah, AR_IMR_S2,
35 AR_IMR_S2_QCU_TXURN, ah->txurn_interrupt_mask);
36 }
37
38 u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q)
39 {
40 return REG_READ(ah, AR_QTXDP(q));
41 }
42
43 bool ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp)
44 {
45 REG_WRITE(ah, AR_QTXDP(q), txdp);
46
47 return true;
48 }
49
50 bool ath9k_hw_txstart(struct ath_hw *ah, u32 q)
51 {
52 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Enable TXE on queue: %u\n", q);
53
54 REG_WRITE(ah, AR_Q_TXE, 1 << q);
55
56 return true;
57 }
58
59 u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q)
60 {
61 u32 npend;
62
63 npend = REG_READ(ah, AR_QSTS(q)) & AR_Q_STS_PEND_FR_CNT;
64 if (npend == 0) {
65
66 if (REG_READ(ah, AR_Q_TXE) & (1 << q))
67 npend = 1;
68 }
69
70 return npend;
71 }
72
73 bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
74 {
75 u32 txcfg, curLevel, newLevel;
76 enum ath9k_int omask;
77
78 if (ah->tx_trig_level >= MAX_TX_FIFO_THRESHOLD)
79 return false;
80
81 omask = ath9k_hw_set_interrupts(ah, ah->mask_reg & ~ATH9K_INT_GLOBAL);
82
83 txcfg = REG_READ(ah, AR_TXCFG);
84 curLevel = MS(txcfg, AR_FTRIG);
85 newLevel = curLevel;
86 if (bIncTrigLevel) {
87 if (curLevel < MAX_TX_FIFO_THRESHOLD)
88 newLevel++;
89 } else if (curLevel > MIN_TX_FIFO_THRESHOLD)
90 newLevel--;
91 if (newLevel != curLevel)
92 REG_WRITE(ah, AR_TXCFG,
93 (txcfg & ~AR_FTRIG) | SM(newLevel, AR_FTRIG));
94
95 ath9k_hw_set_interrupts(ah, omask);
96
97 ah->tx_trig_level = newLevel;
98
99 return newLevel != curLevel;
100 }
101
102 bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
103 {
104 #define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
105 #define ATH9K_TIME_QUANTUM 100 /* usec */
106
107 struct ath9k_hw_capabilities *pCap = &ah->caps;
108 struct ath9k_tx_queue_info *qi;
109 u32 tsfLow, j, wait;
110 u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
111
112 if (q >= pCap->total_queues) {
113 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Stopping TX DMA, "
114 "invalid queue: %u\n", q);
115 return false;
116 }
117
118 qi = &ah->txq[q];
119 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
120 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Stopping TX DMA, "
121 "inactive queue: %u\n", q);
122 return false;
123 }
124
125 REG_WRITE(ah, AR_Q_TXD, 1 << q);
126
127 for (wait = wait_time; wait != 0; wait--) {
128 if (ath9k_hw_numtxpending(ah, q) == 0)
129 break;
130 udelay(ATH9K_TIME_QUANTUM);
131 }
132
133 if (ath9k_hw_numtxpending(ah, q)) {
134 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE,
135 "%s: Num of pending TX Frames %d on Q %d\n",
136 __func__, ath9k_hw_numtxpending(ah, q), q);
137
138 for (j = 0; j < 2; j++) {
139 tsfLow = REG_READ(ah, AR_TSF_L32);
140 REG_WRITE(ah, AR_QUIET2,
141 SM(10, AR_QUIET2_QUIET_DUR));
142 REG_WRITE(ah, AR_QUIET_PERIOD, 100);
143 REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
144 REG_SET_BIT(ah, AR_TIMER_MODE,
145 AR_QUIET_TIMER_EN);
146
147 if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
148 break;
149
150 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE,
151 "TSF has moved while trying to set "
152 "quiet time TSF: 0x%08x\n", tsfLow);
153 }
154
155 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
156
157 udelay(200);
158 REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
159
160 wait = wait_time;
161 while (ath9k_hw_numtxpending(ah, q)) {
162 if ((--wait) == 0) {
163 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE,
164 "Failed to stop TX DMA in 100 "
165 "msec after killing last frame\n");
166 break;
167 }
168 udelay(ATH9K_TIME_QUANTUM);
169 }
170
171 REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
172 }
173
174 REG_WRITE(ah, AR_Q_TXD, 0);
175 return wait != 0;
176
177 #undef ATH9K_TX_STOP_DMA_TIMEOUT
178 #undef ATH9K_TIME_QUANTUM
179 }
180
181 bool ath9k_hw_filltxdesc(struct ath_hw *ah, struct ath_desc *ds,
182 u32 segLen, bool firstSeg,
183 bool lastSeg, const struct ath_desc *ds0)
184 {
185 struct ar5416_desc *ads = AR5416DESC(ds);
186
187 if (firstSeg) {
188 ads->ds_ctl1 |= segLen | (lastSeg ? 0 : AR_TxMore);
189 } else if (lastSeg) {
190 ads->ds_ctl0 = 0;
191 ads->ds_ctl1 = segLen;
192 ads->ds_ctl2 = AR5416DESC_CONST(ds0)->ds_ctl2;
193 ads->ds_ctl3 = AR5416DESC_CONST(ds0)->ds_ctl3;
194 } else {
195 ads->ds_ctl0 = 0;
196 ads->ds_ctl1 = segLen | AR_TxMore;
197 ads->ds_ctl2 = 0;
198 ads->ds_ctl3 = 0;
199 }
200 ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
201 ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
202 ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
203 ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
204 ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
205
206 return true;
207 }
208
209 void ath9k_hw_cleartxdesc(struct ath_hw *ah, struct ath_desc *ds)
210 {
211 struct ar5416_desc *ads = AR5416DESC(ds);
212
213 ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
214 ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
215 ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
216 ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
217 ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
218 }
219
220 int ath9k_hw_txprocdesc(struct ath_hw *ah, struct ath_desc *ds)
221 {
222 struct ar5416_desc *ads = AR5416DESC(ds);
223
224 if ((ads->ds_txstatus9 & AR_TxDone) == 0)
225 return -EINPROGRESS;
226
227 ds->ds_txstat.ts_seqnum = MS(ads->ds_txstatus9, AR_SeqNum);
228 ds->ds_txstat.ts_tstamp = ads->AR_SendTimestamp;
229 ds->ds_txstat.ts_status = 0;
230 ds->ds_txstat.ts_flags = 0;
231
232 if (ads->ds_txstatus1 & AR_ExcessiveRetries)
233 ds->ds_txstat.ts_status |= ATH9K_TXERR_XRETRY;
234 if (ads->ds_txstatus1 & AR_Filtered)
235 ds->ds_txstat.ts_status |= ATH9K_TXERR_FILT;
236 if (ads->ds_txstatus1 & AR_FIFOUnderrun) {
237 ds->ds_txstat.ts_status |= ATH9K_TXERR_FIFO;
238 ath9k_hw_updatetxtriglevel(ah, true);
239 }
240 if (ads->ds_txstatus9 & AR_TxOpExceeded)
241 ds->ds_txstat.ts_status |= ATH9K_TXERR_XTXOP;
242 if (ads->ds_txstatus1 & AR_TxTimerExpired)
243 ds->ds_txstat.ts_status |= ATH9K_TXERR_TIMER_EXPIRED;
244
245 if (ads->ds_txstatus1 & AR_DescCfgErr)
246 ds->ds_txstat.ts_flags |= ATH9K_TX_DESC_CFG_ERR;
247 if (ads->ds_txstatus1 & AR_TxDataUnderrun) {
248 ds->ds_txstat.ts_flags |= ATH9K_TX_DATA_UNDERRUN;
249 ath9k_hw_updatetxtriglevel(ah, true);
250 }
251 if (ads->ds_txstatus1 & AR_TxDelimUnderrun) {
252 ds->ds_txstat.ts_flags |= ATH9K_TX_DELIM_UNDERRUN;
253 ath9k_hw_updatetxtriglevel(ah, true);
254 }
255 if (ads->ds_txstatus0 & AR_TxBaStatus) {
256 ds->ds_txstat.ts_flags |= ATH9K_TX_BA;
257 ds->ds_txstat.ba_low = ads->AR_BaBitmapLow;
258 ds->ds_txstat.ba_high = ads->AR_BaBitmapHigh;
259 }
260
261 ds->ds_txstat.ts_rateindex = MS(ads->ds_txstatus9, AR_FinalTxIdx);
262 switch (ds->ds_txstat.ts_rateindex) {
263 case 0:
264 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate0);
265 break;
266 case 1:
267 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate1);
268 break;
269 case 2:
270 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate2);
271 break;
272 case 3:
273 ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate3);
274 break;
275 }
276
277 ds->ds_txstat.ts_rssi = MS(ads->ds_txstatus5, AR_TxRSSICombined);
278 ds->ds_txstat.ts_rssi_ctl0 = MS(ads->ds_txstatus0, AR_TxRSSIAnt00);
279 ds->ds_txstat.ts_rssi_ctl1 = MS(ads->ds_txstatus0, AR_TxRSSIAnt01);
280 ds->ds_txstat.ts_rssi_ctl2 = MS(ads->ds_txstatus0, AR_TxRSSIAnt02);
281 ds->ds_txstat.ts_rssi_ext0 = MS(ads->ds_txstatus5, AR_TxRSSIAnt10);
282 ds->ds_txstat.ts_rssi_ext1 = MS(ads->ds_txstatus5, AR_TxRSSIAnt11);
283 ds->ds_txstat.ts_rssi_ext2 = MS(ads->ds_txstatus5, AR_TxRSSIAnt12);
284 ds->ds_txstat.evm0 = ads->AR_TxEVM0;
285 ds->ds_txstat.evm1 = ads->AR_TxEVM1;
286 ds->ds_txstat.evm2 = ads->AR_TxEVM2;
287 ds->ds_txstat.ts_shortretry = MS(ads->ds_txstatus1, AR_RTSFailCnt);
288 ds->ds_txstat.ts_longretry = MS(ads->ds_txstatus1, AR_DataFailCnt);
289 ds->ds_txstat.ts_virtcol = MS(ads->ds_txstatus1, AR_VirtRetryCnt);
290 ds->ds_txstat.ts_antenna = 0;
291
292 return 0;
293 }
294
295 void ath9k_hw_set11n_txdesc(struct ath_hw *ah, struct ath_desc *ds,
296 u32 pktLen, enum ath9k_pkt_type type, u32 txPower,
297 u32 keyIx, enum ath9k_key_type keyType, u32 flags)
298 {
299 struct ar5416_desc *ads = AR5416DESC(ds);
300
301 txPower += ah->txpower_indexoffset;
302 if (txPower > 63)
303 txPower = 63;
304
305 ads->ds_ctl0 = (pktLen & AR_FrameLen)
306 | (flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
307 | SM(txPower, AR_XmitPower)
308 | (flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
309 | (flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
310 | (flags & ATH9K_TXDESC_INTREQ ? AR_TxIntrReq : 0)
311 | (keyIx != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0);
312
313 ads->ds_ctl1 =
314 (keyIx != ATH9K_TXKEYIX_INVALID ? SM(keyIx, AR_DestIdx) : 0)
315 | SM(type, AR_FrameType)
316 | (flags & ATH9K_TXDESC_NOACK ? AR_NoAck : 0)
317 | (flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0)
318 | (flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0);
319
320 ads->ds_ctl6 = SM(keyType, AR_EncrType);
321
322 if (AR_SREV_9285(ah)) {
323 ads->ds_ctl8 = 0;
324 ads->ds_ctl9 = 0;
325 ads->ds_ctl10 = 0;
326 ads->ds_ctl11 = 0;
327 }
328 }
329
330 void ath9k_hw_set11n_ratescenario(struct ath_hw *ah, struct ath_desc *ds,
331 struct ath_desc *lastds,
332 u32 durUpdateEn, u32 rtsctsRate,
333 u32 rtsctsDuration,
334 struct ath9k_11n_rate_series series[],
335 u32 nseries, u32 flags)
336 {
337 struct ar5416_desc *ads = AR5416DESC(ds);
338 struct ar5416_desc *last_ads = AR5416DESC(lastds);
339 u32 ds_ctl0;
340
341 if (flags & (ATH9K_TXDESC_RTSENA | ATH9K_TXDESC_CTSENA)) {
342 ds_ctl0 = ads->ds_ctl0;
343
344 if (flags & ATH9K_TXDESC_RTSENA) {
345 ds_ctl0 &= ~AR_CTSEnable;
346 ds_ctl0 |= AR_RTSEnable;
347 } else {
348 ds_ctl0 &= ~AR_RTSEnable;
349 ds_ctl0 |= AR_CTSEnable;
350 }
351
352 ads->ds_ctl0 = ds_ctl0;
353 } else {
354 ads->ds_ctl0 =
355 (ads->ds_ctl0 & ~(AR_RTSEnable | AR_CTSEnable));
356 }
357
358 ads->ds_ctl2 = set11nTries(series, 0)
359 | set11nTries(series, 1)
360 | set11nTries(series, 2)
361 | set11nTries(series, 3)
362 | (durUpdateEn ? AR_DurUpdateEna : 0)
363 | SM(0, AR_BurstDur);
364
365 ads->ds_ctl3 = set11nRate(series, 0)
366 | set11nRate(series, 1)
367 | set11nRate(series, 2)
368 | set11nRate(series, 3);
369
370 ads->ds_ctl4 = set11nPktDurRTSCTS(series, 0)
371 | set11nPktDurRTSCTS(series, 1);
372
373 ads->ds_ctl5 = set11nPktDurRTSCTS(series, 2)
374 | set11nPktDurRTSCTS(series, 3);
375
376 ads->ds_ctl7 = set11nRateFlags(series, 0)
377 | set11nRateFlags(series, 1)
378 | set11nRateFlags(series, 2)
379 | set11nRateFlags(series, 3)
380 | SM(rtsctsRate, AR_RTSCTSRate);
381 last_ads->ds_ctl2 = ads->ds_ctl2;
382 last_ads->ds_ctl3 = ads->ds_ctl3;
383 }
384
385 void ath9k_hw_set11n_aggr_first(struct ath_hw *ah, struct ath_desc *ds,
386 u32 aggrLen)
387 {
388 struct ar5416_desc *ads = AR5416DESC(ds);
389
390 ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
391 ads->ds_ctl6 &= ~AR_AggrLen;
392 ads->ds_ctl6 |= SM(aggrLen, AR_AggrLen);
393 }
394
395 void ath9k_hw_set11n_aggr_middle(struct ath_hw *ah, struct ath_desc *ds,
396 u32 numDelims)
397 {
398 struct ar5416_desc *ads = AR5416DESC(ds);
399 unsigned int ctl6;
400
401 ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
402
403 ctl6 = ads->ds_ctl6;
404 ctl6 &= ~AR_PadDelim;
405 ctl6 |= SM(numDelims, AR_PadDelim);
406 ads->ds_ctl6 = ctl6;
407 }
408
409 void ath9k_hw_set11n_aggr_last(struct ath_hw *ah, struct ath_desc *ds)
410 {
411 struct ar5416_desc *ads = AR5416DESC(ds);
412
413 ads->ds_ctl1 |= AR_IsAggr;
414 ads->ds_ctl1 &= ~AR_MoreAggr;
415 ads->ds_ctl6 &= ~AR_PadDelim;
416 }
417
418 void ath9k_hw_clr11n_aggr(struct ath_hw *ah, struct ath_desc *ds)
419 {
420 struct ar5416_desc *ads = AR5416DESC(ds);
421
422 ads->ds_ctl1 &= (~AR_IsAggr & ~AR_MoreAggr);
423 }
424
425 void ath9k_hw_set11n_burstduration(struct ath_hw *ah, struct ath_desc *ds,
426 u32 burstDuration)
427 {
428 struct ar5416_desc *ads = AR5416DESC(ds);
429
430 ads->ds_ctl2 &= ~AR_BurstDur;
431 ads->ds_ctl2 |= SM(burstDuration, AR_BurstDur);
432 }
433
434 void ath9k_hw_set11n_virtualmorefrag(struct ath_hw *ah, struct ath_desc *ds,
435 u32 vmf)
436 {
437 struct ar5416_desc *ads = AR5416DESC(ds);
438
439 if (vmf)
440 ads->ds_ctl0 |= AR_VirtMoreFrag;
441 else
442 ads->ds_ctl0 &= ~AR_VirtMoreFrag;
443 }
444
445 void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
446 {
447 *txqs &= ah->intr_txqs;
448 ah->intr_txqs &= ~(*txqs);
449 }
450
451 bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
452 const struct ath9k_tx_queue_info *qinfo)
453 {
454 u32 cw;
455 struct ath9k_hw_capabilities *pCap = &ah->caps;
456 struct ath9k_tx_queue_info *qi;
457
458 if (q >= pCap->total_queues) {
459 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Set TXQ properties, "
460 "invalid queue: %u\n", q);
461 return false;
462 }
463
464 qi = &ah->txq[q];
465 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
466 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Set TXQ properties, "
467 "inactive queue: %u\n", q);
468 return false;
469 }
470
471 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Set queue properties for: %u\n", q);
472
473 qi->tqi_ver = qinfo->tqi_ver;
474 qi->tqi_subtype = qinfo->tqi_subtype;
475 qi->tqi_qflags = qinfo->tqi_qflags;
476 qi->tqi_priority = qinfo->tqi_priority;
477 if (qinfo->tqi_aifs != ATH9K_TXQ_USEDEFAULT)
478 qi->tqi_aifs = min(qinfo->tqi_aifs, 255U);
479 else
480 qi->tqi_aifs = INIT_AIFS;
481 if (qinfo->tqi_cwmin != ATH9K_TXQ_USEDEFAULT) {
482 cw = min(qinfo->tqi_cwmin, 1024U);
483 qi->tqi_cwmin = 1;
484 while (qi->tqi_cwmin < cw)
485 qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1;
486 } else
487 qi->tqi_cwmin = qinfo->tqi_cwmin;
488 if (qinfo->tqi_cwmax != ATH9K_TXQ_USEDEFAULT) {
489 cw = min(qinfo->tqi_cwmax, 1024U);
490 qi->tqi_cwmax = 1;
491 while (qi->tqi_cwmax < cw)
492 qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1;
493 } else
494 qi->tqi_cwmax = INIT_CWMAX;
495
496 if (qinfo->tqi_shretry != 0)
497 qi->tqi_shretry = min((u32) qinfo->tqi_shretry, 15U);
498 else
499 qi->tqi_shretry = INIT_SH_RETRY;
500 if (qinfo->tqi_lgretry != 0)
501 qi->tqi_lgretry = min((u32) qinfo->tqi_lgretry, 15U);
502 else
503 qi->tqi_lgretry = INIT_LG_RETRY;
504 qi->tqi_cbrPeriod = qinfo->tqi_cbrPeriod;
505 qi->tqi_cbrOverflowLimit = qinfo->tqi_cbrOverflowLimit;
506 qi->tqi_burstTime = qinfo->tqi_burstTime;
507 qi->tqi_readyTime = qinfo->tqi_readyTime;
508
509 switch (qinfo->tqi_subtype) {
510 case ATH9K_WME_UPSD:
511 if (qi->tqi_type == ATH9K_TX_QUEUE_DATA)
512 qi->tqi_intFlags = ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS;
513 break;
514 default:
515 break;
516 }
517
518 return true;
519 }
520
521 bool ath9k_hw_get_txq_props(struct ath_hw *ah, int q,
522 struct ath9k_tx_queue_info *qinfo)
523 {
524 struct ath9k_hw_capabilities *pCap = &ah->caps;
525 struct ath9k_tx_queue_info *qi;
526
527 if (q >= pCap->total_queues) {
528 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Get TXQ properties, "
529 "invalid queue: %u\n", q);
530 return false;
531 }
532
533 qi = &ah->txq[q];
534 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
535 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Get TXQ properties, "
536 "inactive queue: %u\n", q);
537 return false;
538 }
539
540 qinfo->tqi_qflags = qi->tqi_qflags;
541 qinfo->tqi_ver = qi->tqi_ver;
542 qinfo->tqi_subtype = qi->tqi_subtype;
543 qinfo->tqi_qflags = qi->tqi_qflags;
544 qinfo->tqi_priority = qi->tqi_priority;
545 qinfo->tqi_aifs = qi->tqi_aifs;
546 qinfo->tqi_cwmin = qi->tqi_cwmin;
547 qinfo->tqi_cwmax = qi->tqi_cwmax;
548 qinfo->tqi_shretry = qi->tqi_shretry;
549 qinfo->tqi_lgretry = qi->tqi_lgretry;
550 qinfo->tqi_cbrPeriod = qi->tqi_cbrPeriod;
551 qinfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit;
552 qinfo->tqi_burstTime = qi->tqi_burstTime;
553 qinfo->tqi_readyTime = qi->tqi_readyTime;
554
555 return true;
556 }
557
558 int ath9k_hw_setuptxqueue(struct ath_hw *ah, enum ath9k_tx_queue type,
559 const struct ath9k_tx_queue_info *qinfo)
560 {
561 struct ath9k_tx_queue_info *qi;
562 struct ath9k_hw_capabilities *pCap = &ah->caps;
563 int q;
564
565 switch (type) {
566 case ATH9K_TX_QUEUE_BEACON:
567 q = pCap->total_queues - 1;
568 break;
569 case ATH9K_TX_QUEUE_CAB:
570 q = pCap->total_queues - 2;
571 break;
572 case ATH9K_TX_QUEUE_PSPOLL:
573 q = 1;
574 break;
575 case ATH9K_TX_QUEUE_UAPSD:
576 q = pCap->total_queues - 3;
577 break;
578 case ATH9K_TX_QUEUE_DATA:
579 for (q = 0; q < pCap->total_queues; q++)
580 if (ah->txq[q].tqi_type ==
581 ATH9K_TX_QUEUE_INACTIVE)
582 break;
583 if (q == pCap->total_queues) {
584 DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
585 "No available TX queue\n");
586 return -1;
587 }
588 break;
589 default:
590 DPRINTF(ah->ah_sc, ATH_DBG_FATAL, "Invalid TX queue type: %u\n",
591 type);
592 return -1;
593 }
594
595 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Setup TX queue: %u\n", q);
596
597 qi = &ah->txq[q];
598 if (qi->tqi_type != ATH9K_TX_QUEUE_INACTIVE) {
599 DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
600 "TX queue: %u already active\n", q);
601 return -1;
602 }
603 memset(qi, 0, sizeof(struct ath9k_tx_queue_info));
604 qi->tqi_type = type;
605 if (qinfo == NULL) {
606 qi->tqi_qflags =
607 TXQ_FLAG_TXOKINT_ENABLE
608 | TXQ_FLAG_TXERRINT_ENABLE
609 | TXQ_FLAG_TXDESCINT_ENABLE | TXQ_FLAG_TXURNINT_ENABLE;
610 qi->tqi_aifs = INIT_AIFS;
611 qi->tqi_cwmin = ATH9K_TXQ_USEDEFAULT;
612 qi->tqi_cwmax = INIT_CWMAX;
613 qi->tqi_shretry = INIT_SH_RETRY;
614 qi->tqi_lgretry = INIT_LG_RETRY;
615 qi->tqi_physCompBuf = 0;
616 } else {
617 qi->tqi_physCompBuf = qinfo->tqi_physCompBuf;
618 (void) ath9k_hw_set_txq_props(ah, q, qinfo);
619 }
620
621 return q;
622 }
623
624 bool ath9k_hw_releasetxqueue(struct ath_hw *ah, u32 q)
625 {
626 struct ath9k_hw_capabilities *pCap = &ah->caps;
627 struct ath9k_tx_queue_info *qi;
628
629 if (q >= pCap->total_queues) {
630 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Release TXQ, "
631 "invalid queue: %u\n", q);
632 return false;
633 }
634 qi = &ah->txq[q];
635 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
636 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Release TXQ, "
637 "inactive queue: %u\n", q);
638 return false;
639 }
640
641 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Release TX queue: %u\n", q);
642
643 qi->tqi_type = ATH9K_TX_QUEUE_INACTIVE;
644 ah->txok_interrupt_mask &= ~(1 << q);
645 ah->txerr_interrupt_mask &= ~(1 << q);
646 ah->txdesc_interrupt_mask &= ~(1 << q);
647 ah->txeol_interrupt_mask &= ~(1 << q);
648 ah->txurn_interrupt_mask &= ~(1 << q);
649 ath9k_hw_set_txq_interrupts(ah, qi);
650
651 return true;
652 }
653
654 bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q)
655 {
656 struct ath9k_hw_capabilities *pCap = &ah->caps;
657 struct ath9k_channel *chan = ah->curchan;
658 struct ath9k_tx_queue_info *qi;
659 u32 cwMin, chanCwMin, value;
660
661 if (q >= pCap->total_queues) {
662 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Reset TXQ, "
663 "invalid queue: %u\n", q);
664 return false;
665 }
666
667 qi = &ah->txq[q];
668 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
669 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Reset TXQ, "
670 "inactive queue: %u\n", q);
671 return true;
672 }
673
674 DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Reset TX queue: %u\n", q);
675
676 if (qi->tqi_cwmin == ATH9K_TXQ_USEDEFAULT) {
677 if (chan && IS_CHAN_B(chan))
678 chanCwMin = INIT_CWMIN_11B;
679 else
680 chanCwMin = INIT_CWMIN;
681
682 for (cwMin = 1; cwMin < chanCwMin; cwMin = (cwMin << 1) | 1);
683 } else
684 cwMin = qi->tqi_cwmin;
685
686 REG_WRITE(ah, AR_DLCL_IFS(q),
687 SM(cwMin, AR_D_LCL_IFS_CWMIN) |
688 SM(qi->tqi_cwmax, AR_D_LCL_IFS_CWMAX) |
689 SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
690
691 REG_WRITE(ah, AR_DRETRY_LIMIT(q),
692 SM(INIT_SSH_RETRY, AR_D_RETRY_LIMIT_STA_SH) |
693 SM(INIT_SLG_RETRY, AR_D_RETRY_LIMIT_STA_LG) |
694 SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH));
695
696 REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ);
697 REG_WRITE(ah, AR_DMISC(q),
698 AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2);
699
700 if (qi->tqi_cbrPeriod) {
701 REG_WRITE(ah, AR_QCBRCFG(q),
702 SM(qi->tqi_cbrPeriod, AR_Q_CBRCFG_INTERVAL) |
703 SM(qi->tqi_cbrOverflowLimit, AR_Q_CBRCFG_OVF_THRESH));
704 REG_WRITE(ah, AR_QMISC(q),
705 REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_FSP_CBR |
706 (qi->tqi_cbrOverflowLimit ?
707 AR_Q_MISC_CBR_EXP_CNTR_LIMIT_EN : 0));
708 }
709 if (qi->tqi_readyTime && (qi->tqi_type != ATH9K_TX_QUEUE_CAB)) {
710 REG_WRITE(ah, AR_QRDYTIMECFG(q),
711 SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_DURATION) |
712 AR_Q_RDYTIMECFG_EN);
713 }
714
715 REG_WRITE(ah, AR_DCHNTIME(q),
716 SM(qi->tqi_burstTime, AR_D_CHNTIME_DUR) |
717 (qi->tqi_burstTime ? AR_D_CHNTIME_EN : 0));
718
719 if (qi->tqi_burstTime
720 && (qi->tqi_qflags & TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE)) {
721 REG_WRITE(ah, AR_QMISC(q),
722 REG_READ(ah, AR_QMISC(q)) |
723 AR_Q_MISC_RDYTIME_EXP_POLICY);
724
725 }
726
727 if (qi->tqi_qflags & TXQ_FLAG_BACKOFF_DISABLE) {
728 REG_WRITE(ah, AR_DMISC(q),
729 REG_READ(ah, AR_DMISC(q)) |
730 AR_D_MISC_POST_FR_BKOFF_DIS);
731 }
732 if (qi->tqi_qflags & TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE) {
733 REG_WRITE(ah, AR_DMISC(q),
734 REG_READ(ah, AR_DMISC(q)) |
735 AR_D_MISC_FRAG_BKOFF_EN);
736 }
737 switch (qi->tqi_type) {
738 case ATH9K_TX_QUEUE_BEACON:
739 REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
740 | AR_Q_MISC_FSP_DBA_GATED
741 | AR_Q_MISC_BEACON_USE
742 | AR_Q_MISC_CBR_INCR_DIS1);
743
744 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
745 | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
746 AR_D_MISC_ARB_LOCKOUT_CNTRL_S)
747 | AR_D_MISC_BEACON_USE
748 | AR_D_MISC_POST_FR_BKOFF_DIS);
749 break;
750 case ATH9K_TX_QUEUE_CAB:
751 REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
752 | AR_Q_MISC_FSP_DBA_GATED
753 | AR_Q_MISC_CBR_INCR_DIS1
754 | AR_Q_MISC_CBR_INCR_DIS0);
755 value = (qi->tqi_readyTime -
756 (ah->config.sw_beacon_response_time -
757 ah->config.dma_beacon_response_time) -
758 ah->config.additional_swba_backoff) * 1024;
759 REG_WRITE(ah, AR_QRDYTIMECFG(q),
760 value | AR_Q_RDYTIMECFG_EN);
761 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
762 | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
763 AR_D_MISC_ARB_LOCKOUT_CNTRL_S));
764 break;
765 case ATH9K_TX_QUEUE_PSPOLL:
766 REG_WRITE(ah, AR_QMISC(q),
767 REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_CBR_INCR_DIS1);
768 break;
769 case ATH9K_TX_QUEUE_UAPSD:
770 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q)) |
771 AR_D_MISC_POST_FR_BKOFF_DIS);
772 break;
773 default:
774 break;
775 }
776
777 if (qi->tqi_intFlags & ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS) {
778 REG_WRITE(ah, AR_DMISC(q),
779 REG_READ(ah, AR_DMISC(q)) |
780 SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
781 AR_D_MISC_ARB_LOCKOUT_CNTRL) |
782 AR_D_MISC_POST_FR_BKOFF_DIS);
783 }
784
785 if (qi->tqi_qflags & TXQ_FLAG_TXOKINT_ENABLE)
786 ah->txok_interrupt_mask |= 1 << q;
787 else
788 ah->txok_interrupt_mask &= ~(1 << q);
789 if (qi->tqi_qflags & TXQ_FLAG_TXERRINT_ENABLE)
790 ah->txerr_interrupt_mask |= 1 << q;
791 else
792 ah->txerr_interrupt_mask &= ~(1 << q);
793 if (qi->tqi_qflags & TXQ_FLAG_TXDESCINT_ENABLE)
794 ah->txdesc_interrupt_mask |= 1 << q;
795 else
796 ah->txdesc_interrupt_mask &= ~(1 << q);
797 if (qi->tqi_qflags & TXQ_FLAG_TXEOLINT_ENABLE)
798 ah->txeol_interrupt_mask |= 1 << q;
799 else
800 ah->txeol_interrupt_mask &= ~(1 << q);
801 if (qi->tqi_qflags & TXQ_FLAG_TXURNINT_ENABLE)
802 ah->txurn_interrupt_mask |= 1 << q;
803 else
804 ah->txurn_interrupt_mask &= ~(1 << q);
805 ath9k_hw_set_txq_interrupts(ah, qi);
806
807 return true;
808 }
809
810 int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
811 u32 pa, struct ath_desc *nds, u64 tsf)
812 {
813 struct ar5416_desc ads;
814 struct ar5416_desc *adsp = AR5416DESC(ds);
815 u32 phyerr;
816
817 if ((adsp->ds_rxstatus8 & AR_RxDone) == 0)
818 return -EINPROGRESS;
819
820 ads.u.rx = adsp->u.rx;
821
822 ds->ds_rxstat.rs_status = 0;
823 ds->ds_rxstat.rs_flags = 0;
824
825 ds->ds_rxstat.rs_datalen = ads.ds_rxstatus1 & AR_DataLen;
826 ds->ds_rxstat.rs_tstamp = ads.AR_RcvTimestamp;
827
828 ds->ds_rxstat.rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
829 ds->ds_rxstat.rs_rssi_ctl0 = MS(ads.ds_rxstatus0, AR_RxRSSIAnt00);
830 ds->ds_rxstat.rs_rssi_ctl1 = MS(ads.ds_rxstatus0, AR_RxRSSIAnt01);
831 ds->ds_rxstat.rs_rssi_ctl2 = MS(ads.ds_rxstatus0, AR_RxRSSIAnt02);
832 ds->ds_rxstat.rs_rssi_ext0 = MS(ads.ds_rxstatus4, AR_RxRSSIAnt10);
833 ds->ds_rxstat.rs_rssi_ext1 = MS(ads.ds_rxstatus4, AR_RxRSSIAnt11);
834 ds->ds_rxstat.rs_rssi_ext2 = MS(ads.ds_rxstatus4, AR_RxRSSIAnt12);
835 if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
836 ds->ds_rxstat.rs_keyix = MS(ads.ds_rxstatus8, AR_KeyIdx);
837 else
838 ds->ds_rxstat.rs_keyix = ATH9K_RXKEYIX_INVALID;
839
840 ds->ds_rxstat.rs_rate = RXSTATUS_RATE(ah, (&ads));
841 ds->ds_rxstat.rs_more = (ads.ds_rxstatus1 & AR_RxMore) ? 1 : 0;
842
843 ds->ds_rxstat.rs_isaggr = (ads.ds_rxstatus8 & AR_RxAggr) ? 1 : 0;
844 ds->ds_rxstat.rs_moreaggr =
845 (ads.ds_rxstatus8 & AR_RxMoreAggr) ? 1 : 0;
846 ds->ds_rxstat.rs_antenna = MS(ads.ds_rxstatus3, AR_RxAntenna);
847 ds->ds_rxstat.rs_flags =
848 (ads.ds_rxstatus3 & AR_GI) ? ATH9K_RX_GI : 0;
849 ds->ds_rxstat.rs_flags |=
850 (ads.ds_rxstatus3 & AR_2040) ? ATH9K_RX_2040 : 0;
851
852 if (ads.ds_rxstatus8 & AR_PreDelimCRCErr)
853 ds->ds_rxstat.rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
854 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr)
855 ds->ds_rxstat.rs_flags |= ATH9K_RX_DELIM_CRC_POST;
856 if (ads.ds_rxstatus8 & AR_DecryptBusyErr)
857 ds->ds_rxstat.rs_flags |= ATH9K_RX_DECRYPT_BUSY;
858
859 if ((ads.ds_rxstatus8 & AR_RxFrameOK) == 0) {
860 if (ads.ds_rxstatus8 & AR_CRCErr)
861 ds->ds_rxstat.rs_status |= ATH9K_RXERR_CRC;
862 else if (ads.ds_rxstatus8 & AR_PHYErr) {
863 ds->ds_rxstat.rs_status |= ATH9K_RXERR_PHY;
864 phyerr = MS(ads.ds_rxstatus8, AR_PHYErrCode);
865 ds->ds_rxstat.rs_phyerr = phyerr;
866 } else if (ads.ds_rxstatus8 & AR_DecryptCRCErr)
867 ds->ds_rxstat.rs_status |= ATH9K_RXERR_DECRYPT;
868 else if (ads.ds_rxstatus8 & AR_MichaelErr)
869 ds->ds_rxstat.rs_status |= ATH9K_RXERR_MIC;
870 }
871
872 return 0;
873 }
874
875 bool ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
876 u32 size, u32 flags)
877 {
878 struct ar5416_desc *ads = AR5416DESC(ds);
879 struct ath9k_hw_capabilities *pCap = &ah->caps;
880
881 ads->ds_ctl1 = size & AR_BufLen;
882 if (flags & ATH9K_RXDESC_INTREQ)
883 ads->ds_ctl1 |= AR_RxIntrReq;
884
885 ads->ds_rxstatus8 &= ~AR_RxDone;
886 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
887 memset(&(ads->u), 0, sizeof(ads->u));
888
889 return true;
890 }
891
892 bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set)
893 {
894 u32 reg;
895
896 if (set) {
897 REG_SET_BIT(ah, AR_DIAG_SW,
898 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
899
900 if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE,
901 0, AH_WAIT_TIMEOUT)) {
902 REG_CLR_BIT(ah, AR_DIAG_SW,
903 (AR_DIAG_RX_DIS |
904 AR_DIAG_RX_ABORT));
905
906 reg = REG_READ(ah, AR_OBS_BUS_1);
907 DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
908 "RX failed to go idle in 10 ms RXSM=0x%x\n", reg);
909
910 return false;
911 }
912 } else {
913 REG_CLR_BIT(ah, AR_DIAG_SW,
914 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
915 }
916
917 return true;
918 }
919
920 void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp)
921 {
922 REG_WRITE(ah, AR_RXDP, rxdp);
923 }
924
925 void ath9k_hw_rxena(struct ath_hw *ah)
926 {
927 REG_WRITE(ah, AR_CR, AR_CR_RXE);
928 }
929
930 void ath9k_hw_startpcureceive(struct ath_hw *ah)
931 {
932 ath9k_enable_mib_counters(ah);
933
934 ath9k_ani_reset(ah);
935
936 REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
937 }
938
939 void ath9k_hw_stoppcurecv(struct ath_hw *ah)
940 {
941 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
942
943 ath9k_hw_disable_mib_counters(ah);
944 }
945
946 bool ath9k_hw_stopdmarecv(struct ath_hw *ah)
947 {
948 #define AH_RX_STOP_DMA_TIMEOUT 10000 /* usec */
949 #define AH_RX_TIME_QUANTUM 100 /* usec */
950
951 int i;
952
953 REG_WRITE(ah, AR_CR, AR_CR_RXD);
954
955 /* Wait for rx enable bit to go low */
956 for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) {
957 if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0)
958 break;
959 udelay(AH_TIME_QUANTUM);
960 }
961
962 if (i == 0) {
963 DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
964 "DMA failed to stop in %d ms "
965 "AR_CR=0x%08x AR_DIAG_SW=0x%08x\n",
966 AH_RX_STOP_DMA_TIMEOUT / 1000,
967 REG_READ(ah, AR_CR),
968 REG_READ(ah, AR_DIAG_SW));
969 return false;
970 } else {
971 return true;
972 }
973
974 #undef AH_RX_TIME_QUANTUM
975 #undef AH_RX_STOP_DMA_TIMEOUT
976 }
977
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