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 void ath9k_hw_cleartxdesc(struct ath_hw *ah, void *ds)
62 struct ar5416_desc *ads = AR5416DESC(ds);
64 ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
65 ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
66 ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
67 ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
68 ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
70 EXPORT_SYMBOL(ath9k_hw_cleartxdesc);
72 u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q)
76 npend = REG_READ(ah, AR_QSTS(q)) & AR_Q_STS_PEND_FR_CNT;
79 if (REG_READ(ah, AR_Q_TXE) & (1 << q))
85 EXPORT_SYMBOL(ath9k_hw_numtxpending);
88 * ath9k_hw_updatetxtriglevel - adjusts the frame trigger level
90 * @ah: atheros hardware struct
91 * @bIncTrigLevel: whether or not the frame trigger level should be updated
93 * The frame trigger level specifies the minimum number of bytes,
94 * in units of 64 bytes, that must be DMA'ed into the PCU TX FIFO
95 * before the PCU will initiate sending the frame on the air. This can
96 * mean we initiate transmit before a full frame is on the PCU TX FIFO.
97 * Resets to 0x1 (meaning 64 bytes or a full frame, whichever occurs
100 * Caution must be taken to ensure to set the frame trigger level based
101 * on the DMA request size. For example if the DMA request size is set to
102 * 128 bytes the trigger level cannot exceed 6 * 64 = 384. This is because
103 * there need to be enough space in the tx FIFO for the requested transfer
104 * size. Hence the tx FIFO will stop with 512 - 128 = 384 bytes. If we set
105 * the threshold to a value beyond 6, then the transmit will hang.
107 * Current dual stream devices have a PCU TX FIFO size of 8 KB.
108 * Current single stream devices have a PCU TX FIFO size of 4 KB, however,
109 * there is a hardware issue which forces us to use 2 KB instead so the
110 * frame trigger level must not exceed 2 KB for these chipsets.
112 bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
114 u32 txcfg, curLevel, newLevel;
115 enum ath9k_int omask;
117 if (ah->tx_trig_level >= ah->config.max_txtrig_level)
120 omask = ath9k_hw_set_interrupts(ah, ah->imask & ~ATH9K_INT_GLOBAL);
122 txcfg = REG_READ(ah, AR_TXCFG);
123 curLevel = MS(txcfg, AR_FTRIG);
126 if (curLevel < ah->config.max_txtrig_level)
128 } else if (curLevel > MIN_TX_FIFO_THRESHOLD)
130 if (newLevel != curLevel)
131 REG_WRITE(ah, AR_TXCFG,
132 (txcfg & ~AR_FTRIG) | SM(newLevel, AR_FTRIG));
134 ath9k_hw_set_interrupts(ah, omask);
136 ah->tx_trig_level = newLevel;
138 return newLevel != curLevel;
140 EXPORT_SYMBOL(ath9k_hw_updatetxtriglevel);
142 bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
144 #define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
145 #define ATH9K_TIME_QUANTUM 100 /* usec */
146 struct ath_common *common = ath9k_hw_common(ah);
147 struct ath9k_hw_capabilities *pCap = &ah->caps;
148 struct ath9k_tx_queue_info *qi;
150 u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
152 if (q >= pCap->total_queues) {
153 ath_print(common, ATH_DBG_QUEUE, "Stopping TX DMA, "
154 "invalid queue: %u\n", q);
159 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
160 ath_print(common, ATH_DBG_QUEUE, "Stopping TX DMA, "
161 "inactive queue: %u\n", q);
165 REG_WRITE(ah, AR_Q_TXD, 1 << q);
167 for (wait = wait_time; wait != 0; wait--) {
168 if (ath9k_hw_numtxpending(ah, q) == 0)
170 udelay(ATH9K_TIME_QUANTUM);
173 if (ath9k_hw_numtxpending(ah, q)) {
174 ath_print(common, ATH_DBG_QUEUE,
175 "%s: Num of pending TX Frames %d on Q %d\n",
176 __func__, ath9k_hw_numtxpending(ah, q), q);
178 for (j = 0; j < 2; j++) {
179 tsfLow = REG_READ(ah, AR_TSF_L32);
180 REG_WRITE(ah, AR_QUIET2,
181 SM(10, AR_QUIET2_QUIET_DUR));
182 REG_WRITE(ah, AR_QUIET_PERIOD, 100);
183 REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
184 REG_SET_BIT(ah, AR_TIMER_MODE,
187 if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
190 ath_print(common, ATH_DBG_QUEUE,
191 "TSF has moved while trying to set "
192 "quiet time TSF: 0x%08x\n", tsfLow);
195 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
198 REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
201 while (ath9k_hw_numtxpending(ah, q)) {
203 ath_print(common, ATH_DBG_FATAL,
204 "Failed to stop TX DMA in 100 "
205 "msec after killing last frame\n");
208 udelay(ATH9K_TIME_QUANTUM);
211 REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
214 REG_WRITE(ah, AR_Q_TXD, 0);
217 #undef ATH9K_TX_STOP_DMA_TIMEOUT
218 #undef ATH9K_TIME_QUANTUM
220 EXPORT_SYMBOL(ath9k_hw_stoptxdma);
222 void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
224 *txqs &= ah->intr_txqs;
225 ah->intr_txqs &= ~(*txqs);
227 EXPORT_SYMBOL(ath9k_hw_gettxintrtxqs);
229 bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
230 const struct ath9k_tx_queue_info *qinfo)
233 struct ath_common *common = ath9k_hw_common(ah);
234 struct ath9k_hw_capabilities *pCap = &ah->caps;
235 struct ath9k_tx_queue_info *qi;
237 if (q >= pCap->total_queues) {
238 ath_print(common, ATH_DBG_QUEUE, "Set TXQ properties, "
239 "invalid queue: %u\n", q);
244 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
245 ath_print(common, ATH_DBG_QUEUE, "Set TXQ properties, "
246 "inactive queue: %u\n", q);
250 ath_print(common, ATH_DBG_QUEUE, "Set queue properties for: %u\n", q);
252 qi->tqi_ver = qinfo->tqi_ver;
253 qi->tqi_subtype = qinfo->tqi_subtype;
254 qi->tqi_qflags = qinfo->tqi_qflags;
255 qi->tqi_priority = qinfo->tqi_priority;
256 if (qinfo->tqi_aifs != ATH9K_TXQ_USEDEFAULT)
257 qi->tqi_aifs = min(qinfo->tqi_aifs, 255U);
259 qi->tqi_aifs = INIT_AIFS;
260 if (qinfo->tqi_cwmin != ATH9K_TXQ_USEDEFAULT) {
261 cw = min(qinfo->tqi_cwmin, 1024U);
263 while (qi->tqi_cwmin < cw)
264 qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1;
266 qi->tqi_cwmin = qinfo->tqi_cwmin;
267 if (qinfo->tqi_cwmax != ATH9K_TXQ_USEDEFAULT) {
268 cw = min(qinfo->tqi_cwmax, 1024U);
270 while (qi->tqi_cwmax < cw)
271 qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1;
273 qi->tqi_cwmax = INIT_CWMAX;
275 if (qinfo->tqi_shretry != 0)
276 qi->tqi_shretry = min((u32) qinfo->tqi_shretry, 15U);
278 qi->tqi_shretry = INIT_SH_RETRY;
279 if (qinfo->tqi_lgretry != 0)
280 qi->tqi_lgretry = min((u32) qinfo->tqi_lgretry, 15U);
282 qi->tqi_lgretry = INIT_LG_RETRY;
283 qi->tqi_cbrPeriod = qinfo->tqi_cbrPeriod;
284 qi->tqi_cbrOverflowLimit = qinfo->tqi_cbrOverflowLimit;
285 qi->tqi_burstTime = qinfo->tqi_burstTime;
286 qi->tqi_readyTime = qinfo->tqi_readyTime;
288 switch (qinfo->tqi_subtype) {
290 if (qi->tqi_type == ATH9K_TX_QUEUE_DATA)
291 qi->tqi_intFlags = ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS;
299 EXPORT_SYMBOL(ath9k_hw_set_txq_props);
301 bool ath9k_hw_get_txq_props(struct ath_hw *ah, int q,
302 struct ath9k_tx_queue_info *qinfo)
304 struct ath_common *common = ath9k_hw_common(ah);
305 struct ath9k_hw_capabilities *pCap = &ah->caps;
306 struct ath9k_tx_queue_info *qi;
308 if (q >= pCap->total_queues) {
309 ath_print(common, ATH_DBG_QUEUE, "Get TXQ properties, "
310 "invalid queue: %u\n", q);
315 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
316 ath_print(common, ATH_DBG_QUEUE, "Get TXQ properties, "
317 "inactive queue: %u\n", q);
321 qinfo->tqi_qflags = qi->tqi_qflags;
322 qinfo->tqi_ver = qi->tqi_ver;
323 qinfo->tqi_subtype = qi->tqi_subtype;
324 qinfo->tqi_qflags = qi->tqi_qflags;
325 qinfo->tqi_priority = qi->tqi_priority;
326 qinfo->tqi_aifs = qi->tqi_aifs;
327 qinfo->tqi_cwmin = qi->tqi_cwmin;
328 qinfo->tqi_cwmax = qi->tqi_cwmax;
329 qinfo->tqi_shretry = qi->tqi_shretry;
330 qinfo->tqi_lgretry = qi->tqi_lgretry;
331 qinfo->tqi_cbrPeriod = qi->tqi_cbrPeriod;
332 qinfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit;
333 qinfo->tqi_burstTime = qi->tqi_burstTime;
334 qinfo->tqi_readyTime = qi->tqi_readyTime;
338 EXPORT_SYMBOL(ath9k_hw_get_txq_props);
340 int ath9k_hw_setuptxqueue(struct ath_hw *ah, enum ath9k_tx_queue type,
341 const struct ath9k_tx_queue_info *qinfo)
343 struct ath_common *common = ath9k_hw_common(ah);
344 struct ath9k_tx_queue_info *qi;
345 struct ath9k_hw_capabilities *pCap = &ah->caps;
349 case ATH9K_TX_QUEUE_BEACON:
350 q = pCap->total_queues - 1;
352 case ATH9K_TX_QUEUE_CAB:
353 q = pCap->total_queues - 2;
355 case ATH9K_TX_QUEUE_PSPOLL:
358 case ATH9K_TX_QUEUE_UAPSD:
359 q = pCap->total_queues - 3;
361 case ATH9K_TX_QUEUE_DATA:
362 for (q = 0; q < pCap->total_queues; q++)
363 if (ah->txq[q].tqi_type ==
364 ATH9K_TX_QUEUE_INACTIVE)
366 if (q == pCap->total_queues) {
367 ath_print(common, ATH_DBG_FATAL,
368 "No available TX queue\n");
373 ath_print(common, ATH_DBG_FATAL,
374 "Invalid TX queue type: %u\n", type);
378 ath_print(common, ATH_DBG_QUEUE, "Setup TX queue: %u\n", q);
381 if (qi->tqi_type != ATH9K_TX_QUEUE_INACTIVE) {
382 ath_print(common, ATH_DBG_FATAL,
383 "TX queue: %u already active\n", q);
386 memset(qi, 0, sizeof(struct ath9k_tx_queue_info));
390 TXQ_FLAG_TXOKINT_ENABLE
391 | TXQ_FLAG_TXERRINT_ENABLE
392 | TXQ_FLAG_TXDESCINT_ENABLE | TXQ_FLAG_TXURNINT_ENABLE;
393 qi->tqi_aifs = INIT_AIFS;
394 qi->tqi_cwmin = ATH9K_TXQ_USEDEFAULT;
395 qi->tqi_cwmax = INIT_CWMAX;
396 qi->tqi_shretry = INIT_SH_RETRY;
397 qi->tqi_lgretry = INIT_LG_RETRY;
398 qi->tqi_physCompBuf = 0;
400 qi->tqi_physCompBuf = qinfo->tqi_physCompBuf;
401 (void) ath9k_hw_set_txq_props(ah, q, qinfo);
406 EXPORT_SYMBOL(ath9k_hw_setuptxqueue);
408 bool ath9k_hw_releasetxqueue(struct ath_hw *ah, u32 q)
410 struct ath9k_hw_capabilities *pCap = &ah->caps;
411 struct ath_common *common = ath9k_hw_common(ah);
412 struct ath9k_tx_queue_info *qi;
414 if (q >= pCap->total_queues) {
415 ath_print(common, ATH_DBG_QUEUE, "Release TXQ, "
416 "invalid queue: %u\n", q);
420 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
421 ath_print(common, ATH_DBG_QUEUE, "Release TXQ, "
422 "inactive queue: %u\n", q);
426 ath_print(common, ATH_DBG_QUEUE, "Release TX queue: %u\n", q);
428 qi->tqi_type = ATH9K_TX_QUEUE_INACTIVE;
429 ah->txok_interrupt_mask &= ~(1 << q);
430 ah->txerr_interrupt_mask &= ~(1 << q);
431 ah->txdesc_interrupt_mask &= ~(1 << q);
432 ah->txeol_interrupt_mask &= ~(1 << q);
433 ah->txurn_interrupt_mask &= ~(1 << q);
434 ath9k_hw_set_txq_interrupts(ah, qi);
438 EXPORT_SYMBOL(ath9k_hw_releasetxqueue);
440 bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q)
442 struct ath9k_hw_capabilities *pCap = &ah->caps;
443 struct ath_common *common = ath9k_hw_common(ah);
444 struct ath9k_channel *chan = ah->curchan;
445 struct ath9k_tx_queue_info *qi;
446 u32 cwMin, chanCwMin, value;
448 if (q >= pCap->total_queues) {
449 ath_print(common, ATH_DBG_QUEUE, "Reset TXQ, "
450 "invalid queue: %u\n", q);
455 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
456 ath_print(common, ATH_DBG_QUEUE, "Reset TXQ, "
457 "inactive queue: %u\n", q);
461 ath_print(common, ATH_DBG_QUEUE, "Reset TX queue: %u\n", q);
463 if (qi->tqi_cwmin == ATH9K_TXQ_USEDEFAULT) {
464 if (chan && IS_CHAN_B(chan))
465 chanCwMin = INIT_CWMIN_11B;
467 chanCwMin = INIT_CWMIN;
469 for (cwMin = 1; cwMin < chanCwMin; cwMin = (cwMin << 1) | 1);
471 cwMin = qi->tqi_cwmin;
473 REG_WRITE(ah, AR_DLCL_IFS(q),
474 SM(cwMin, AR_D_LCL_IFS_CWMIN) |
475 SM(qi->tqi_cwmax, AR_D_LCL_IFS_CWMAX) |
476 SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
478 REG_WRITE(ah, AR_DRETRY_LIMIT(q),
479 SM(INIT_SSH_RETRY, AR_D_RETRY_LIMIT_STA_SH) |
480 SM(INIT_SLG_RETRY, AR_D_RETRY_LIMIT_STA_LG) |
481 SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH));
483 REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ);
484 REG_WRITE(ah, AR_DMISC(q),
485 AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2);
487 if (qi->tqi_cbrPeriod) {
488 REG_WRITE(ah, AR_QCBRCFG(q),
489 SM(qi->tqi_cbrPeriod, AR_Q_CBRCFG_INTERVAL) |
490 SM(qi->tqi_cbrOverflowLimit, AR_Q_CBRCFG_OVF_THRESH));
491 REG_WRITE(ah, AR_QMISC(q),
492 REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_FSP_CBR |
493 (qi->tqi_cbrOverflowLimit ?
494 AR_Q_MISC_CBR_EXP_CNTR_LIMIT_EN : 0));
496 if (qi->tqi_readyTime && (qi->tqi_type != ATH9K_TX_QUEUE_CAB)) {
497 REG_WRITE(ah, AR_QRDYTIMECFG(q),
498 SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_DURATION) |
502 REG_WRITE(ah, AR_DCHNTIME(q),
503 SM(qi->tqi_burstTime, AR_D_CHNTIME_DUR) |
504 (qi->tqi_burstTime ? AR_D_CHNTIME_EN : 0));
506 if (qi->tqi_burstTime
507 && (qi->tqi_qflags & TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE)) {
508 REG_WRITE(ah, AR_QMISC(q),
509 REG_READ(ah, AR_QMISC(q)) |
510 AR_Q_MISC_RDYTIME_EXP_POLICY);
514 if (qi->tqi_qflags & TXQ_FLAG_BACKOFF_DISABLE) {
515 REG_WRITE(ah, AR_DMISC(q),
516 REG_READ(ah, AR_DMISC(q)) |
517 AR_D_MISC_POST_FR_BKOFF_DIS);
519 if (qi->tqi_qflags & TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE) {
520 REG_WRITE(ah, AR_DMISC(q),
521 REG_READ(ah, AR_DMISC(q)) |
522 AR_D_MISC_FRAG_BKOFF_EN);
524 switch (qi->tqi_type) {
525 case ATH9K_TX_QUEUE_BEACON:
526 REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
527 | AR_Q_MISC_FSP_DBA_GATED
528 | AR_Q_MISC_BEACON_USE
529 | AR_Q_MISC_CBR_INCR_DIS1);
531 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
532 | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
533 AR_D_MISC_ARB_LOCKOUT_CNTRL_S)
534 | AR_D_MISC_BEACON_USE
535 | AR_D_MISC_POST_FR_BKOFF_DIS);
536 /* cwmin and cwmax should be 0 for beacon queue */
537 if (AR_SREV_9300_20_OR_LATER(ah)) {
538 REG_WRITE(ah, AR_DLCL_IFS(q), SM(0, AR_D_LCL_IFS_CWMIN)
539 | SM(0, AR_D_LCL_IFS_CWMAX)
540 | SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
543 case ATH9K_TX_QUEUE_CAB:
544 REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
545 | AR_Q_MISC_FSP_DBA_GATED
546 | AR_Q_MISC_CBR_INCR_DIS1
547 | AR_Q_MISC_CBR_INCR_DIS0);
548 value = (qi->tqi_readyTime -
549 (ah->config.sw_beacon_response_time -
550 ah->config.dma_beacon_response_time) -
551 ah->config.additional_swba_backoff) * 1024;
552 REG_WRITE(ah, AR_QRDYTIMECFG(q),
553 value | AR_Q_RDYTIMECFG_EN);
554 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
555 | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
556 AR_D_MISC_ARB_LOCKOUT_CNTRL_S));
558 case ATH9K_TX_QUEUE_PSPOLL:
559 REG_WRITE(ah, AR_QMISC(q),
560 REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_CBR_INCR_DIS1);
562 case ATH9K_TX_QUEUE_UAPSD:
563 REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q)) |
564 AR_D_MISC_POST_FR_BKOFF_DIS);
570 if (qi->tqi_intFlags & ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS) {
571 REG_WRITE(ah, AR_DMISC(q),
572 REG_READ(ah, AR_DMISC(q)) |
573 SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
574 AR_D_MISC_ARB_LOCKOUT_CNTRL) |
575 AR_D_MISC_POST_FR_BKOFF_DIS);
578 if (AR_SREV_9300_20_OR_LATER(ah))
579 REG_WRITE(ah, AR_Q_DESC_CRCCHK, AR_Q_DESC_CRCCHK_EN);
581 if (qi->tqi_qflags & TXQ_FLAG_TXOKINT_ENABLE)
582 ah->txok_interrupt_mask |= 1 << q;
584 ah->txok_interrupt_mask &= ~(1 << q);
585 if (qi->tqi_qflags & TXQ_FLAG_TXERRINT_ENABLE)
586 ah->txerr_interrupt_mask |= 1 << q;
588 ah->txerr_interrupt_mask &= ~(1 << q);
589 if (qi->tqi_qflags & TXQ_FLAG_TXDESCINT_ENABLE)
590 ah->txdesc_interrupt_mask |= 1 << q;
592 ah->txdesc_interrupt_mask &= ~(1 << q);
593 if (qi->tqi_qflags & TXQ_FLAG_TXEOLINT_ENABLE)
594 ah->txeol_interrupt_mask |= 1 << q;
596 ah->txeol_interrupt_mask &= ~(1 << q);
597 if (qi->tqi_qflags & TXQ_FLAG_TXURNINT_ENABLE)
598 ah->txurn_interrupt_mask |= 1 << q;
600 ah->txurn_interrupt_mask &= ~(1 << q);
601 ath9k_hw_set_txq_interrupts(ah, qi);
605 EXPORT_SYMBOL(ath9k_hw_resettxqueue);
607 int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
608 struct ath_rx_status *rs, u64 tsf)
610 struct ar5416_desc ads;
611 struct ar5416_desc *adsp = AR5416DESC(ds);
614 if ((adsp->ds_rxstatus8 & AR_RxDone) == 0)
617 ads.u.rx = adsp->u.rx;
622 rs->rs_datalen = ads.ds_rxstatus1 & AR_DataLen;
623 rs->rs_tstamp = ads.AR_RcvTimestamp;
625 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr) {
626 rs->rs_rssi = ATH9K_RSSI_BAD;
627 rs->rs_rssi_ctl0 = ATH9K_RSSI_BAD;
628 rs->rs_rssi_ctl1 = ATH9K_RSSI_BAD;
629 rs->rs_rssi_ctl2 = ATH9K_RSSI_BAD;
630 rs->rs_rssi_ext0 = ATH9K_RSSI_BAD;
631 rs->rs_rssi_ext1 = ATH9K_RSSI_BAD;
632 rs->rs_rssi_ext2 = ATH9K_RSSI_BAD;
634 rs->rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
635 rs->rs_rssi_ctl0 = MS(ads.ds_rxstatus0,
637 rs->rs_rssi_ctl1 = MS(ads.ds_rxstatus0,
639 rs->rs_rssi_ctl2 = MS(ads.ds_rxstatus0,
641 rs->rs_rssi_ext0 = MS(ads.ds_rxstatus4,
643 rs->rs_rssi_ext1 = MS(ads.ds_rxstatus4,
645 rs->rs_rssi_ext2 = MS(ads.ds_rxstatus4,
648 if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
649 rs->rs_keyix = MS(ads.ds_rxstatus8, AR_KeyIdx);
651 rs->rs_keyix = ATH9K_RXKEYIX_INVALID;
653 rs->rs_rate = RXSTATUS_RATE(ah, (&ads));
654 rs->rs_more = (ads.ds_rxstatus1 & AR_RxMore) ? 1 : 0;
656 rs->rs_isaggr = (ads.ds_rxstatus8 & AR_RxAggr) ? 1 : 0;
658 (ads.ds_rxstatus8 & AR_RxMoreAggr) ? 1 : 0;
659 rs->rs_antenna = MS(ads.ds_rxstatus3, AR_RxAntenna);
661 (ads.ds_rxstatus3 & AR_GI) ? ATH9K_RX_GI : 0;
663 (ads.ds_rxstatus3 & AR_2040) ? ATH9K_RX_2040 : 0;
665 if (ads.ds_rxstatus8 & AR_PreDelimCRCErr)
666 rs->rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
667 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr)
668 rs->rs_flags |= ATH9K_RX_DELIM_CRC_POST;
669 if (ads.ds_rxstatus8 & AR_DecryptBusyErr)
670 rs->rs_flags |= ATH9K_RX_DECRYPT_BUSY;
672 if ((ads.ds_rxstatus8 & AR_RxFrameOK) == 0) {
673 if (ads.ds_rxstatus8 & AR_CRCErr)
674 rs->rs_status |= ATH9K_RXERR_CRC;
675 else if (ads.ds_rxstatus8 & AR_PHYErr) {
676 rs->rs_status |= ATH9K_RXERR_PHY;
677 phyerr = MS(ads.ds_rxstatus8, AR_PHYErrCode);
678 rs->rs_phyerr = phyerr;
679 } else if (ads.ds_rxstatus8 & AR_DecryptCRCErr)
680 rs->rs_status |= ATH9K_RXERR_DECRYPT;
681 else if (ads.ds_rxstatus8 & AR_MichaelErr)
682 rs->rs_status |= ATH9K_RXERR_MIC;
687 EXPORT_SYMBOL(ath9k_hw_rxprocdesc);
690 * This can stop or re-enables RX.
692 * If bool is set this will kill any frame which is currently being
693 * transferred between the MAC and baseband and also prevent any new
694 * frames from getting started.
696 bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set)
701 REG_SET_BIT(ah, AR_DIAG_SW,
702 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
704 if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE,
705 0, AH_WAIT_TIMEOUT)) {
706 REG_CLR_BIT(ah, AR_DIAG_SW,
710 reg = REG_READ(ah, AR_OBS_BUS_1);
711 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
712 "RX failed to go idle in 10 ms RXSM=0x%x\n",
718 REG_CLR_BIT(ah, AR_DIAG_SW,
719 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
724 EXPORT_SYMBOL(ath9k_hw_setrxabort);
726 void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp)
728 REG_WRITE(ah, AR_RXDP, rxdp);
730 EXPORT_SYMBOL(ath9k_hw_putrxbuf);
732 void ath9k_hw_startpcureceive(struct ath_hw *ah)
734 ath9k_enable_mib_counters(ah);
738 REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
740 EXPORT_SYMBOL(ath9k_hw_startpcureceive);
742 void ath9k_hw_stoppcurecv(struct ath_hw *ah)
744 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
746 ath9k_hw_disable_mib_counters(ah);
748 EXPORT_SYMBOL(ath9k_hw_stoppcurecv);
750 bool ath9k_hw_stopdmarecv(struct ath_hw *ah)
752 #define AH_RX_STOP_DMA_TIMEOUT 10000 /* usec */
753 #define AH_RX_TIME_QUANTUM 100 /* usec */
754 struct ath_common *common = ath9k_hw_common(ah);
757 REG_WRITE(ah, AR_CR, AR_CR_RXD);
759 /* Wait for rx enable bit to go low */
760 for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) {
761 if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0)
763 udelay(AH_TIME_QUANTUM);
767 ath_print(common, ATH_DBG_FATAL,
768 "DMA failed to stop in %d ms "
769 "AR_CR=0x%08x AR_DIAG_SW=0x%08x\n",
770 AH_RX_STOP_DMA_TIMEOUT / 1000,
772 REG_READ(ah, AR_DIAG_SW));
778 #undef AH_RX_TIME_QUANTUM
779 #undef AH_RX_STOP_DMA_TIMEOUT
781 EXPORT_SYMBOL(ath9k_hw_stopdmarecv);
783 int ath9k_hw_beaconq_setup(struct ath_hw *ah)
785 struct ath9k_tx_queue_info qi;
787 memset(&qi, 0, sizeof(qi));
791 /* NB: don't enable any interrupts */
792 return ath9k_hw_setuptxqueue(ah, ATH9K_TX_QUEUE_BEACON, &qi);
794 EXPORT_SYMBOL(ath9k_hw_beaconq_setup);
796 bool ath9k_hw_intrpend(struct ath_hw *ah)
800 if (AR_SREV_9100(ah))
803 host_isr = REG_READ(ah, AR_INTR_ASYNC_CAUSE);
804 if ((host_isr & AR_INTR_MAC_IRQ) && (host_isr != AR_INTR_SPURIOUS))
807 host_isr = REG_READ(ah, AR_INTR_SYNC_CAUSE);
808 if ((host_isr & AR_INTR_SYNC_DEFAULT)
809 && (host_isr != AR_INTR_SPURIOUS))
814 EXPORT_SYMBOL(ath9k_hw_intrpend);
816 enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah,
819 enum ath9k_int omask = ah->imask;
821 struct ath9k_hw_capabilities *pCap = &ah->caps;
822 struct ath_common *common = ath9k_hw_common(ah);
824 ath_print(common, ATH_DBG_INTERRUPT, "0x%x => 0x%x\n", omask, ints);
826 if (omask & ATH9K_INT_GLOBAL) {
827 ath_print(common, ATH_DBG_INTERRUPT, "disable IER\n");
828 REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
829 (void) REG_READ(ah, AR_IER);
830 if (!AR_SREV_9100(ah)) {
831 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, 0);
832 (void) REG_READ(ah, AR_INTR_ASYNC_ENABLE);
834 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
835 (void) REG_READ(ah, AR_INTR_SYNC_ENABLE);
839 /* TODO: global int Ref count */
840 mask = ints & ATH9K_INT_COMMON;
843 if (ints & ATH9K_INT_TX) {
844 if (ah->config.tx_intr_mitigation)
845 mask |= AR_IMR_TXMINTR | AR_IMR_TXINTM;
846 if (ah->txok_interrupt_mask)
848 if (ah->txdesc_interrupt_mask)
849 mask |= AR_IMR_TXDESC;
850 if (ah->txerr_interrupt_mask)
851 mask |= AR_IMR_TXERR;
852 if (ah->txeol_interrupt_mask)
853 mask |= AR_IMR_TXEOL;
855 if (ints & ATH9K_INT_RX) {
856 if (AR_SREV_9300_20_OR_LATER(ah)) {
857 mask |= AR_IMR_RXERR | AR_IMR_RXOK_HP;
858 if (ah->config.rx_intr_mitigation) {
859 mask &= ~AR_IMR_RXOK_LP;
860 mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
862 mask |= AR_IMR_RXOK_LP;
865 if (ah->config.rx_intr_mitigation)
866 mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
868 mask |= AR_IMR_RXOK | AR_IMR_RXDESC;
870 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
871 mask |= AR_IMR_GENTMR;
874 if (ints & (ATH9K_INT_BMISC)) {
875 mask |= AR_IMR_BCNMISC;
876 if (ints & ATH9K_INT_TIM)
877 mask2 |= AR_IMR_S2_TIM;
878 if (ints & ATH9K_INT_DTIM)
879 mask2 |= AR_IMR_S2_DTIM;
880 if (ints & ATH9K_INT_DTIMSYNC)
881 mask2 |= AR_IMR_S2_DTIMSYNC;
882 if (ints & ATH9K_INT_CABEND)
883 mask2 |= AR_IMR_S2_CABEND;
884 if (ints & ATH9K_INT_TSFOOR)
885 mask2 |= AR_IMR_S2_TSFOOR;
888 if (ints & (ATH9K_INT_GTT | ATH9K_INT_CST)) {
889 mask |= AR_IMR_BCNMISC;
890 if (ints & ATH9K_INT_GTT)
891 mask2 |= AR_IMR_S2_GTT;
892 if (ints & ATH9K_INT_CST)
893 mask2 |= AR_IMR_S2_CST;
896 ath_print(common, ATH_DBG_INTERRUPT, "new IMR 0x%x\n", mask);
897 REG_WRITE(ah, AR_IMR, mask);
898 ah->imrs2_reg &= ~(AR_IMR_S2_TIM | AR_IMR_S2_DTIM | AR_IMR_S2_DTIMSYNC |
899 AR_IMR_S2_CABEND | AR_IMR_S2_CABTO |
900 AR_IMR_S2_TSFOOR | AR_IMR_S2_GTT | AR_IMR_S2_CST);
901 ah->imrs2_reg |= mask2;
902 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
904 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
905 if (ints & ATH9K_INT_TIM_TIMER)
906 REG_SET_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
908 REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
911 if (ints & ATH9K_INT_GLOBAL) {
912 ath_print(common, ATH_DBG_INTERRUPT, "enable IER\n");
913 REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
914 if (!AR_SREV_9100(ah)) {
915 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
917 REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
920 REG_WRITE(ah, AR_INTR_SYNC_ENABLE,
921 AR_INTR_SYNC_DEFAULT);
922 REG_WRITE(ah, AR_INTR_SYNC_MASK,
923 AR_INTR_SYNC_DEFAULT);
925 ath_print(common, ATH_DBG_INTERRUPT, "AR_IMR 0x%x IER 0x%x\n",
926 REG_READ(ah, AR_IMR), REG_READ(ah, AR_IER));
931 EXPORT_SYMBOL(ath9k_hw_set_interrupts);