2 * Copyright (c) 2008-2011 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.
20 static void ath9k_hw_set_txq_interrupts(struct ath_hw *ah,
21 struct ath9k_tx_queue_info *qi)
23 ath_dbg(ath9k_hw_common(ah), ATH_DBG_INTERRUPT,
24 "tx ok 0x%x err 0x%x desc 0x%x eol 0x%x urn 0x%x\n",
25 ah->txok_interrupt_mask, ah->txerr_interrupt_mask,
26 ah->txdesc_interrupt_mask, ah->txeol_interrupt_mask,
27 ah->txurn_interrupt_mask);
29 ENABLE_REGWRITE_BUFFER(ah);
31 REG_WRITE(ah, AR_IMR_S0,
32 SM(ah->txok_interrupt_mask, AR_IMR_S0_QCU_TXOK)
33 | SM(ah->txdesc_interrupt_mask, AR_IMR_S0_QCU_TXDESC));
34 REG_WRITE(ah, AR_IMR_S1,
35 SM(ah->txerr_interrupt_mask, AR_IMR_S1_QCU_TXERR)
36 | SM(ah->txeol_interrupt_mask, AR_IMR_S1_QCU_TXEOL));
38 ah->imrs2_reg &= ~AR_IMR_S2_QCU_TXURN;
39 ah->imrs2_reg |= (ah->txurn_interrupt_mask & AR_IMR_S2_QCU_TXURN);
40 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
42 REGWRITE_BUFFER_FLUSH(ah);
45 u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q)
47 return REG_READ(ah, AR_QTXDP(q));
49 EXPORT_SYMBOL(ath9k_hw_gettxbuf);
51 void ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp)
53 REG_WRITE(ah, AR_QTXDP(q), txdp);
55 EXPORT_SYMBOL(ath9k_hw_puttxbuf);
57 void ath9k_hw_txstart(struct ath_hw *ah, u32 q)
59 ath_dbg(ath9k_hw_common(ah), ATH_DBG_QUEUE,
60 "Enable TXE on queue: %u\n", q);
61 REG_WRITE(ah, AR_Q_TXE, 1 << q);
63 EXPORT_SYMBOL(ath9k_hw_txstart);
65 void ath9k_hw_cleartxdesc(struct ath_hw *ah, void *ds)
67 struct ar5416_desc *ads = AR5416DESC(ds);
69 ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
70 ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
71 ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
72 ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
73 ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
75 EXPORT_SYMBOL(ath9k_hw_cleartxdesc);
77 u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q)
81 npend = REG_READ(ah, AR_QSTS(q)) & AR_Q_STS_PEND_FR_CNT;
84 if (REG_READ(ah, AR_Q_TXE) & (1 << q))
90 EXPORT_SYMBOL(ath9k_hw_numtxpending);
93 * ath9k_hw_updatetxtriglevel - adjusts the frame trigger level
95 * @ah: atheros hardware struct
96 * @bIncTrigLevel: whether or not the frame trigger level should be updated
98 * The frame trigger level specifies the minimum number of bytes,
99 * in units of 64 bytes, that must be DMA'ed into the PCU TX FIFO
100 * before the PCU will initiate sending the frame on the air. This can
101 * mean we initiate transmit before a full frame is on the PCU TX FIFO.
102 * Resets to 0x1 (meaning 64 bytes or a full frame, whichever occurs
105 * Caution must be taken to ensure to set the frame trigger level based
106 * on the DMA request size. For example if the DMA request size is set to
107 * 128 bytes the trigger level cannot exceed 6 * 64 = 384. This is because
108 * there need to be enough space in the tx FIFO for the requested transfer
109 * size. Hence the tx FIFO will stop with 512 - 128 = 384 bytes. If we set
110 * the threshold to a value beyond 6, then the transmit will hang.
112 * Current dual stream devices have a PCU TX FIFO size of 8 KB.
113 * Current single stream devices have a PCU TX FIFO size of 4 KB, however,
114 * there is a hardware issue which forces us to use 2 KB instead so the
115 * frame trigger level must not exceed 2 KB for these chipsets.
117 bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
119 u32 txcfg, curLevel, newLevel;
121 if (ah->tx_trig_level >= ah->config.max_txtrig_level)
124 ath9k_hw_disable_interrupts(ah);
126 txcfg = REG_READ(ah, AR_TXCFG);
127 curLevel = MS(txcfg, AR_FTRIG);
130 if (curLevel < ah->config.max_txtrig_level)
132 } else if (curLevel > MIN_TX_FIFO_THRESHOLD)
134 if (newLevel != curLevel)
135 REG_WRITE(ah, AR_TXCFG,
136 (txcfg & ~AR_FTRIG) | SM(newLevel, AR_FTRIG));
138 ath9k_hw_enable_interrupts(ah);
140 ah->tx_trig_level = newLevel;
142 return newLevel != curLevel;
144 EXPORT_SYMBOL(ath9k_hw_updatetxtriglevel);
146 void ath9k_hw_abort_tx_dma(struct ath_hw *ah)
150 REG_WRITE(ah, AR_Q_TXD, AR_Q_TXD_M);
152 REG_SET_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
153 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
154 REG_SET_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
156 for (q = 0; q < AR_NUM_QCU; q++) {
157 for (i = 0; i < 1000; i++) {
161 if (!ath9k_hw_numtxpending(ah, q))
166 REG_CLR_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
167 REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
168 REG_CLR_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
170 REG_WRITE(ah, AR_Q_TXD, 0);
172 EXPORT_SYMBOL(ath9k_hw_abort_tx_dma);
174 bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q)
176 #define ATH9K_TX_STOP_DMA_TIMEOUT 1000 /* usec */
177 #define ATH9K_TIME_QUANTUM 100 /* usec */
178 int wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
181 REG_WRITE(ah, AR_Q_TXD, 1 << q);
183 for (wait = wait_time; wait != 0; wait--) {
184 if (wait != wait_time)
185 udelay(ATH9K_TIME_QUANTUM);
187 if (ath9k_hw_numtxpending(ah, q) == 0)
191 REG_WRITE(ah, AR_Q_TXD, 0);
195 #undef ATH9K_TX_STOP_DMA_TIMEOUT
196 #undef ATH9K_TIME_QUANTUM
198 EXPORT_SYMBOL(ath9k_hw_stop_dma_queue);
200 void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
202 *txqs &= ah->intr_txqs;
203 ah->intr_txqs &= ~(*txqs);
205 EXPORT_SYMBOL(ath9k_hw_gettxintrtxqs);
207 bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
208 const struct ath9k_tx_queue_info *qinfo)
211 struct ath_common *common = ath9k_hw_common(ah);
212 struct ath9k_tx_queue_info *qi;
215 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
216 ath_dbg(common, ATH_DBG_QUEUE,
217 "Set TXQ properties, inactive queue: %u\n", q);
221 ath_dbg(common, ATH_DBG_QUEUE, "Set queue properties for: %u\n", q);
223 qi->tqi_ver = qinfo->tqi_ver;
224 qi->tqi_subtype = qinfo->tqi_subtype;
225 qi->tqi_qflags = qinfo->tqi_qflags;
226 qi->tqi_priority = qinfo->tqi_priority;
227 if (qinfo->tqi_aifs != ATH9K_TXQ_USEDEFAULT)
228 qi->tqi_aifs = min(qinfo->tqi_aifs, 255U);
230 qi->tqi_aifs = INIT_AIFS;
231 if (qinfo->tqi_cwmin != ATH9K_TXQ_USEDEFAULT) {
232 cw = min(qinfo->tqi_cwmin, 1024U);
234 while (qi->tqi_cwmin < cw)
235 qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1;
237 qi->tqi_cwmin = qinfo->tqi_cwmin;
238 if (qinfo->tqi_cwmax != ATH9K_TXQ_USEDEFAULT) {
239 cw = min(qinfo->tqi_cwmax, 1024U);
241 while (qi->tqi_cwmax < cw)
242 qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1;
244 qi->tqi_cwmax = INIT_CWMAX;
246 if (qinfo->tqi_shretry != 0)
247 qi->tqi_shretry = min((u32) qinfo->tqi_shretry, 15U);
249 qi->tqi_shretry = INIT_SH_RETRY;
250 if (qinfo->tqi_lgretry != 0)
251 qi->tqi_lgretry = min((u32) qinfo->tqi_lgretry, 15U);
253 qi->tqi_lgretry = INIT_LG_RETRY;
254 qi->tqi_cbrPeriod = qinfo->tqi_cbrPeriod;
255 qi->tqi_cbrOverflowLimit = qinfo->tqi_cbrOverflowLimit;
256 qi->tqi_burstTime = qinfo->tqi_burstTime;
257 qi->tqi_readyTime = qinfo->tqi_readyTime;
259 switch (qinfo->tqi_subtype) {
261 if (qi->tqi_type == ATH9K_TX_QUEUE_DATA)
262 qi->tqi_intFlags = ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS;
270 EXPORT_SYMBOL(ath9k_hw_set_txq_props);
272 bool ath9k_hw_get_txq_props(struct ath_hw *ah, int q,
273 struct ath9k_tx_queue_info *qinfo)
275 struct ath_common *common = ath9k_hw_common(ah);
276 struct ath9k_tx_queue_info *qi;
279 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
280 ath_dbg(common, ATH_DBG_QUEUE,
281 "Get TXQ properties, inactive queue: %u\n", q);
285 qinfo->tqi_qflags = qi->tqi_qflags;
286 qinfo->tqi_ver = qi->tqi_ver;
287 qinfo->tqi_subtype = qi->tqi_subtype;
288 qinfo->tqi_qflags = qi->tqi_qflags;
289 qinfo->tqi_priority = qi->tqi_priority;
290 qinfo->tqi_aifs = qi->tqi_aifs;
291 qinfo->tqi_cwmin = qi->tqi_cwmin;
292 qinfo->tqi_cwmax = qi->tqi_cwmax;
293 qinfo->tqi_shretry = qi->tqi_shretry;
294 qinfo->tqi_lgretry = qi->tqi_lgretry;
295 qinfo->tqi_cbrPeriod = qi->tqi_cbrPeriod;
296 qinfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit;
297 qinfo->tqi_burstTime = qi->tqi_burstTime;
298 qinfo->tqi_readyTime = qi->tqi_readyTime;
302 EXPORT_SYMBOL(ath9k_hw_get_txq_props);
304 int ath9k_hw_setuptxqueue(struct ath_hw *ah, enum ath9k_tx_queue type,
305 const struct ath9k_tx_queue_info *qinfo)
307 struct ath_common *common = ath9k_hw_common(ah);
308 struct ath9k_tx_queue_info *qi;
312 case ATH9K_TX_QUEUE_BEACON:
313 q = ATH9K_NUM_TX_QUEUES - 1;
315 case ATH9K_TX_QUEUE_CAB:
316 q = ATH9K_NUM_TX_QUEUES - 2;
318 case ATH9K_TX_QUEUE_PSPOLL:
321 case ATH9K_TX_QUEUE_UAPSD:
322 q = ATH9K_NUM_TX_QUEUES - 3;
324 case ATH9K_TX_QUEUE_DATA:
325 for (q = 0; q < ATH9K_NUM_TX_QUEUES; q++)
326 if (ah->txq[q].tqi_type ==
327 ATH9K_TX_QUEUE_INACTIVE)
329 if (q == ATH9K_NUM_TX_QUEUES) {
330 ath_err(common, "No available TX queue\n");
335 ath_err(common, "Invalid TX queue type: %u\n", type);
339 ath_dbg(common, ATH_DBG_QUEUE, "Setup TX queue: %u\n", q);
342 if (qi->tqi_type != ATH9K_TX_QUEUE_INACTIVE) {
343 ath_err(common, "TX queue: %u already active\n", q);
346 memset(qi, 0, sizeof(struct ath9k_tx_queue_info));
348 qi->tqi_physCompBuf = qinfo->tqi_physCompBuf;
349 (void) ath9k_hw_set_txq_props(ah, q, qinfo);
353 EXPORT_SYMBOL(ath9k_hw_setuptxqueue);
355 bool ath9k_hw_releasetxqueue(struct ath_hw *ah, u32 q)
357 struct ath_common *common = ath9k_hw_common(ah);
358 struct ath9k_tx_queue_info *qi;
361 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
362 ath_dbg(common, ATH_DBG_QUEUE,
363 "Release TXQ, inactive queue: %u\n", q);
367 ath_dbg(common, ATH_DBG_QUEUE, "Release TX queue: %u\n", q);
369 qi->tqi_type = ATH9K_TX_QUEUE_INACTIVE;
370 ah->txok_interrupt_mask &= ~(1 << q);
371 ah->txerr_interrupt_mask &= ~(1 << q);
372 ah->txdesc_interrupt_mask &= ~(1 << q);
373 ah->txeol_interrupt_mask &= ~(1 << q);
374 ah->txurn_interrupt_mask &= ~(1 << q);
375 ath9k_hw_set_txq_interrupts(ah, qi);
379 EXPORT_SYMBOL(ath9k_hw_releasetxqueue);
381 bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q)
383 struct ath_common *common = ath9k_hw_common(ah);
384 struct ath9k_channel *chan = ah->curchan;
385 struct ath9k_tx_queue_info *qi;
386 u32 cwMin, chanCwMin, value;
389 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
390 ath_dbg(common, ATH_DBG_QUEUE,
391 "Reset TXQ, inactive queue: %u\n", q);
395 ath_dbg(common, ATH_DBG_QUEUE, "Reset TX queue: %u\n", q);
397 if (qi->tqi_cwmin == ATH9K_TXQ_USEDEFAULT) {
398 if (chan && IS_CHAN_B(chan))
399 chanCwMin = INIT_CWMIN_11B;
401 chanCwMin = INIT_CWMIN;
403 for (cwMin = 1; cwMin < chanCwMin; cwMin = (cwMin << 1) | 1);
405 cwMin = qi->tqi_cwmin;
407 ENABLE_REGWRITE_BUFFER(ah);
409 REG_WRITE(ah, AR_DLCL_IFS(q),
410 SM(cwMin, AR_D_LCL_IFS_CWMIN) |
411 SM(qi->tqi_cwmax, AR_D_LCL_IFS_CWMAX) |
412 SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
414 REG_WRITE(ah, AR_DRETRY_LIMIT(q),
415 SM(INIT_SSH_RETRY, AR_D_RETRY_LIMIT_STA_SH) |
416 SM(INIT_SLG_RETRY, AR_D_RETRY_LIMIT_STA_LG) |
417 SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH));
419 REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ);
421 if (AR_SREV_9340(ah))
422 REG_WRITE(ah, AR_DMISC(q),
423 AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x1);
425 REG_WRITE(ah, AR_DMISC(q),
426 AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2);
428 if (qi->tqi_cbrPeriod) {
429 REG_WRITE(ah, AR_QCBRCFG(q),
430 SM(qi->tqi_cbrPeriod, AR_Q_CBRCFG_INTERVAL) |
431 SM(qi->tqi_cbrOverflowLimit, AR_Q_CBRCFG_OVF_THRESH));
432 REG_SET_BIT(ah, AR_QMISC(q), AR_Q_MISC_FSP_CBR |
433 (qi->tqi_cbrOverflowLimit ?
434 AR_Q_MISC_CBR_EXP_CNTR_LIMIT_EN : 0));
436 if (qi->tqi_readyTime && (qi->tqi_type != ATH9K_TX_QUEUE_CAB)) {
437 REG_WRITE(ah, AR_QRDYTIMECFG(q),
438 SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_DURATION) |
442 REG_WRITE(ah, AR_DCHNTIME(q),
443 SM(qi->tqi_burstTime, AR_D_CHNTIME_DUR) |
444 (qi->tqi_burstTime ? AR_D_CHNTIME_EN : 0));
446 if (qi->tqi_burstTime
447 && (qi->tqi_qflags & TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE))
448 REG_SET_BIT(ah, AR_QMISC(q), AR_Q_MISC_RDYTIME_EXP_POLICY);
450 if (qi->tqi_qflags & TXQ_FLAG_BACKOFF_DISABLE)
451 REG_SET_BIT(ah, AR_DMISC(q), AR_D_MISC_POST_FR_BKOFF_DIS);
453 REGWRITE_BUFFER_FLUSH(ah);
455 if (qi->tqi_qflags & TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE)
456 REG_SET_BIT(ah, AR_DMISC(q), AR_D_MISC_FRAG_BKOFF_EN);
458 switch (qi->tqi_type) {
459 case ATH9K_TX_QUEUE_BEACON:
460 ENABLE_REGWRITE_BUFFER(ah);
462 REG_SET_BIT(ah, AR_QMISC(q),
463 AR_Q_MISC_FSP_DBA_GATED
464 | AR_Q_MISC_BEACON_USE
465 | AR_Q_MISC_CBR_INCR_DIS1);
467 REG_SET_BIT(ah, AR_DMISC(q),
468 (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
469 AR_D_MISC_ARB_LOCKOUT_CNTRL_S)
470 | AR_D_MISC_BEACON_USE
471 | AR_D_MISC_POST_FR_BKOFF_DIS);
473 REGWRITE_BUFFER_FLUSH(ah);
476 * cwmin and cwmax should be 0 for beacon queue
477 * but not for IBSS as we would create an imbalance
478 * on beaconing fairness for participating nodes.
480 if (AR_SREV_9300_20_OR_LATER(ah) &&
481 ah->opmode != NL80211_IFTYPE_ADHOC) {
482 REG_WRITE(ah, AR_DLCL_IFS(q), SM(0, AR_D_LCL_IFS_CWMIN)
483 | SM(0, AR_D_LCL_IFS_CWMAX)
484 | SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
487 case ATH9K_TX_QUEUE_CAB:
488 ENABLE_REGWRITE_BUFFER(ah);
490 REG_SET_BIT(ah, AR_QMISC(q),
491 AR_Q_MISC_FSP_DBA_GATED
492 | AR_Q_MISC_CBR_INCR_DIS1
493 | AR_Q_MISC_CBR_INCR_DIS0);
494 value = (qi->tqi_readyTime -
495 (ah->config.sw_beacon_response_time -
496 ah->config.dma_beacon_response_time) -
497 ah->config.additional_swba_backoff) * 1024;
498 REG_WRITE(ah, AR_QRDYTIMECFG(q),
499 value | AR_Q_RDYTIMECFG_EN);
500 REG_SET_BIT(ah, AR_DMISC(q),
501 (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
502 AR_D_MISC_ARB_LOCKOUT_CNTRL_S));
504 REGWRITE_BUFFER_FLUSH(ah);
507 case ATH9K_TX_QUEUE_PSPOLL:
508 REG_SET_BIT(ah, AR_QMISC(q), AR_Q_MISC_CBR_INCR_DIS1);
510 case ATH9K_TX_QUEUE_UAPSD:
511 REG_SET_BIT(ah, AR_DMISC(q), AR_D_MISC_POST_FR_BKOFF_DIS);
517 if (qi->tqi_intFlags & ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS) {
518 REG_SET_BIT(ah, AR_DMISC(q),
519 SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
520 AR_D_MISC_ARB_LOCKOUT_CNTRL) |
521 AR_D_MISC_POST_FR_BKOFF_DIS);
524 if (AR_SREV_9300_20_OR_LATER(ah))
525 REG_WRITE(ah, AR_Q_DESC_CRCCHK, AR_Q_DESC_CRCCHK_EN);
527 if (qi->tqi_qflags & TXQ_FLAG_TXOKINT_ENABLE)
528 ah->txok_interrupt_mask |= 1 << q;
530 ah->txok_interrupt_mask &= ~(1 << q);
531 if (qi->tqi_qflags & TXQ_FLAG_TXERRINT_ENABLE)
532 ah->txerr_interrupt_mask |= 1 << q;
534 ah->txerr_interrupt_mask &= ~(1 << q);
535 if (qi->tqi_qflags & TXQ_FLAG_TXDESCINT_ENABLE)
536 ah->txdesc_interrupt_mask |= 1 << q;
538 ah->txdesc_interrupt_mask &= ~(1 << q);
539 if (qi->tqi_qflags & TXQ_FLAG_TXEOLINT_ENABLE)
540 ah->txeol_interrupt_mask |= 1 << q;
542 ah->txeol_interrupt_mask &= ~(1 << q);
543 if (qi->tqi_qflags & TXQ_FLAG_TXURNINT_ENABLE)
544 ah->txurn_interrupt_mask |= 1 << q;
546 ah->txurn_interrupt_mask &= ~(1 << q);
547 ath9k_hw_set_txq_interrupts(ah, qi);
551 EXPORT_SYMBOL(ath9k_hw_resettxqueue);
553 int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
554 struct ath_rx_status *rs)
556 struct ar5416_desc ads;
557 struct ar5416_desc *adsp = AR5416DESC(ds);
560 if ((adsp->ds_rxstatus8 & AR_RxDone) == 0)
563 ads.u.rx = adsp->u.rx;
568 rs->rs_datalen = ads.ds_rxstatus1 & AR_DataLen;
569 rs->rs_tstamp = ads.AR_RcvTimestamp;
571 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr) {
572 rs->rs_rssi = ATH9K_RSSI_BAD;
573 rs->rs_rssi_ctl0 = ATH9K_RSSI_BAD;
574 rs->rs_rssi_ctl1 = ATH9K_RSSI_BAD;
575 rs->rs_rssi_ctl2 = ATH9K_RSSI_BAD;
576 rs->rs_rssi_ext0 = ATH9K_RSSI_BAD;
577 rs->rs_rssi_ext1 = ATH9K_RSSI_BAD;
578 rs->rs_rssi_ext2 = ATH9K_RSSI_BAD;
580 rs->rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
581 rs->rs_rssi_ctl0 = MS(ads.ds_rxstatus0,
583 rs->rs_rssi_ctl1 = MS(ads.ds_rxstatus0,
585 rs->rs_rssi_ctl2 = MS(ads.ds_rxstatus0,
587 rs->rs_rssi_ext0 = MS(ads.ds_rxstatus4,
589 rs->rs_rssi_ext1 = MS(ads.ds_rxstatus4,
591 rs->rs_rssi_ext2 = MS(ads.ds_rxstatus4,
594 if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
595 rs->rs_keyix = MS(ads.ds_rxstatus8, AR_KeyIdx);
597 rs->rs_keyix = ATH9K_RXKEYIX_INVALID;
599 rs->rs_rate = RXSTATUS_RATE(ah, (&ads));
600 rs->rs_more = (ads.ds_rxstatus1 & AR_RxMore) ? 1 : 0;
602 rs->rs_isaggr = (ads.ds_rxstatus8 & AR_RxAggr) ? 1 : 0;
604 (ads.ds_rxstatus8 & AR_RxMoreAggr) ? 1 : 0;
605 rs->rs_antenna = MS(ads.ds_rxstatus3, AR_RxAntenna);
607 (ads.ds_rxstatus3 & AR_GI) ? ATH9K_RX_GI : 0;
609 (ads.ds_rxstatus3 & AR_2040) ? ATH9K_RX_2040 : 0;
611 if (ads.ds_rxstatus8 & AR_PreDelimCRCErr)
612 rs->rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
613 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr)
614 rs->rs_flags |= ATH9K_RX_DELIM_CRC_POST;
615 if (ads.ds_rxstatus8 & AR_DecryptBusyErr)
616 rs->rs_flags |= ATH9K_RX_DECRYPT_BUSY;
618 if ((ads.ds_rxstatus8 & AR_RxFrameOK) == 0) {
620 * Treat these errors as mutually exclusive to avoid spurious
621 * extra error reports from the hardware. If a CRC error is
622 * reported, then decryption and MIC errors are irrelevant,
623 * the frame is going to be dropped either way
625 if (ads.ds_rxstatus8 & AR_CRCErr)
626 rs->rs_status |= ATH9K_RXERR_CRC;
627 else if (ads.ds_rxstatus8 & AR_PHYErr) {
628 rs->rs_status |= ATH9K_RXERR_PHY;
629 phyerr = MS(ads.ds_rxstatus8, AR_PHYErrCode);
630 rs->rs_phyerr = phyerr;
631 } else if (ads.ds_rxstatus8 & AR_DecryptCRCErr)
632 rs->rs_status |= ATH9K_RXERR_DECRYPT;
633 else if (ads.ds_rxstatus8 & AR_MichaelErr)
634 rs->rs_status |= ATH9K_RXERR_MIC;
635 else if (ads.ds_rxstatus8 & AR_KeyMiss)
636 rs->rs_status |= ATH9K_RXERR_DECRYPT;
641 EXPORT_SYMBOL(ath9k_hw_rxprocdesc);
644 * This can stop or re-enables RX.
646 * If bool is set this will kill any frame which is currently being
647 * transferred between the MAC and baseband and also prevent any new
648 * frames from getting started.
650 bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set)
655 REG_SET_BIT(ah, AR_DIAG_SW,
656 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
658 if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE,
659 0, AH_WAIT_TIMEOUT)) {
660 REG_CLR_BIT(ah, AR_DIAG_SW,
664 reg = REG_READ(ah, AR_OBS_BUS_1);
665 ath_err(ath9k_hw_common(ah),
666 "RX failed to go idle in 10 ms RXSM=0x%x\n",
672 REG_CLR_BIT(ah, AR_DIAG_SW,
673 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
678 EXPORT_SYMBOL(ath9k_hw_setrxabort);
680 void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp)
682 REG_WRITE(ah, AR_RXDP, rxdp);
684 EXPORT_SYMBOL(ath9k_hw_putrxbuf);
686 void ath9k_hw_startpcureceive(struct ath_hw *ah, bool is_scanning)
688 ath9k_enable_mib_counters(ah);
690 ath9k_ani_reset(ah, is_scanning);
692 REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
694 EXPORT_SYMBOL(ath9k_hw_startpcureceive);
696 void ath9k_hw_abortpcurecv(struct ath_hw *ah)
698 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS);
700 ath9k_hw_disable_mib_counters(ah);
702 EXPORT_SYMBOL(ath9k_hw_abortpcurecv);
704 bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset)
706 #define AH_RX_STOP_DMA_TIMEOUT 10000 /* usec */
707 struct ath_common *common = ath9k_hw_common(ah);
708 u32 mac_status, last_mac_status = 0;
711 /* Enable access to the DMA observation bus */
712 REG_WRITE(ah, AR_MACMISC,
713 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
714 (AR_MACMISC_MISC_OBS_BUS_1 <<
715 AR_MACMISC_MISC_OBS_BUS_MSB_S)));
717 REG_WRITE(ah, AR_CR, AR_CR_RXD);
719 /* Wait for rx enable bit to go low */
720 for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) {
721 if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0)
724 if (!AR_SREV_9300_20_OR_LATER(ah)) {
725 mac_status = REG_READ(ah, AR_DMADBG_7) & 0x7f0;
726 if (mac_status == 0x1c0 && mac_status == last_mac_status) {
731 last_mac_status = mac_status;
734 udelay(AH_TIME_QUANTUM);
739 "DMA failed to stop in %d ms AR_CR=0x%08x AR_DIAG_SW=0x%08x DMADBG_7=0x%08x\n",
740 AH_RX_STOP_DMA_TIMEOUT / 1000,
742 REG_READ(ah, AR_DIAG_SW),
743 REG_READ(ah, AR_DMADBG_7));
749 #undef AH_RX_STOP_DMA_TIMEOUT
751 EXPORT_SYMBOL(ath9k_hw_stopdmarecv);
753 int ath9k_hw_beaconq_setup(struct ath_hw *ah)
755 struct ath9k_tx_queue_info qi;
757 memset(&qi, 0, sizeof(qi));
761 /* NB: don't enable any interrupts */
762 return ath9k_hw_setuptxqueue(ah, ATH9K_TX_QUEUE_BEACON, &qi);
764 EXPORT_SYMBOL(ath9k_hw_beaconq_setup);
766 bool ath9k_hw_intrpend(struct ath_hw *ah)
770 if (AR_SREV_9100(ah))
773 host_isr = REG_READ(ah, AR_INTR_ASYNC_CAUSE);
774 if ((host_isr & AR_INTR_MAC_IRQ) && (host_isr != AR_INTR_SPURIOUS))
777 host_isr = REG_READ(ah, AR_INTR_SYNC_CAUSE);
778 if ((host_isr & AR_INTR_SYNC_DEFAULT)
779 && (host_isr != AR_INTR_SPURIOUS))
784 EXPORT_SYMBOL(ath9k_hw_intrpend);
786 void ath9k_hw_disable_interrupts(struct ath_hw *ah)
788 struct ath_common *common = ath9k_hw_common(ah);
790 if (!(ah->imask & ATH9K_INT_GLOBAL))
791 atomic_set(&ah->intr_ref_cnt, -1);
793 atomic_dec(&ah->intr_ref_cnt);
795 ath_dbg(common, ATH_DBG_INTERRUPT, "disable IER\n");
796 REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
797 (void) REG_READ(ah, AR_IER);
798 if (!AR_SREV_9100(ah)) {
799 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, 0);
800 (void) REG_READ(ah, AR_INTR_ASYNC_ENABLE);
802 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
803 (void) REG_READ(ah, AR_INTR_SYNC_ENABLE);
806 EXPORT_SYMBOL(ath9k_hw_disable_interrupts);
808 void ath9k_hw_enable_interrupts(struct ath_hw *ah)
810 struct ath_common *common = ath9k_hw_common(ah);
811 u32 sync_default = AR_INTR_SYNC_DEFAULT;
813 if (!(ah->imask & ATH9K_INT_GLOBAL))
816 if (!atomic_inc_and_test(&ah->intr_ref_cnt)) {
817 ath_dbg(common, ATH_DBG_INTERRUPT,
818 "Do not enable IER ref count %d\n",
819 atomic_read(&ah->intr_ref_cnt));
823 if (AR_SREV_9340(ah))
824 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
826 ath_dbg(common, ATH_DBG_INTERRUPT, "enable IER\n");
827 REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
828 if (!AR_SREV_9100(ah)) {
829 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
831 REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
834 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
835 REG_WRITE(ah, AR_INTR_SYNC_MASK, sync_default);
837 ath_dbg(common, ATH_DBG_INTERRUPT, "AR_IMR 0x%x IER 0x%x\n",
838 REG_READ(ah, AR_IMR), REG_READ(ah, AR_IER));
840 EXPORT_SYMBOL(ath9k_hw_enable_interrupts);
842 void ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
844 enum ath9k_int omask = ah->imask;
846 struct ath9k_hw_capabilities *pCap = &ah->caps;
847 struct ath_common *common = ath9k_hw_common(ah);
849 if (!(ints & ATH9K_INT_GLOBAL))
850 ath9k_hw_disable_interrupts(ah);
852 ath_dbg(common, ATH_DBG_INTERRUPT, "0x%x => 0x%x\n", omask, ints);
854 mask = ints & ATH9K_INT_COMMON;
857 if (ints & ATH9K_INT_TX) {
858 if (ah->config.tx_intr_mitigation)
859 mask |= AR_IMR_TXMINTR | AR_IMR_TXINTM;
861 if (ah->txok_interrupt_mask)
863 if (ah->txdesc_interrupt_mask)
864 mask |= AR_IMR_TXDESC;
866 if (ah->txerr_interrupt_mask)
867 mask |= AR_IMR_TXERR;
868 if (ah->txeol_interrupt_mask)
869 mask |= AR_IMR_TXEOL;
871 if (ints & ATH9K_INT_RX) {
872 if (AR_SREV_9300_20_OR_LATER(ah)) {
873 mask |= AR_IMR_RXERR | AR_IMR_RXOK_HP;
874 if (ah->config.rx_intr_mitigation) {
875 mask &= ~AR_IMR_RXOK_LP;
876 mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
878 mask |= AR_IMR_RXOK_LP;
881 if (ah->config.rx_intr_mitigation)
882 mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
884 mask |= AR_IMR_RXOK | AR_IMR_RXDESC;
886 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
887 mask |= AR_IMR_GENTMR;
890 if (ints & ATH9K_INT_GENTIMER)
891 mask |= AR_IMR_GENTMR;
893 if (ints & (ATH9K_INT_BMISC)) {
894 mask |= AR_IMR_BCNMISC;
895 if (ints & ATH9K_INT_TIM)
896 mask2 |= AR_IMR_S2_TIM;
897 if (ints & ATH9K_INT_DTIM)
898 mask2 |= AR_IMR_S2_DTIM;
899 if (ints & ATH9K_INT_DTIMSYNC)
900 mask2 |= AR_IMR_S2_DTIMSYNC;
901 if (ints & ATH9K_INT_CABEND)
902 mask2 |= AR_IMR_S2_CABEND;
903 if (ints & ATH9K_INT_TSFOOR)
904 mask2 |= AR_IMR_S2_TSFOOR;
907 if (ints & (ATH9K_INT_GTT | ATH9K_INT_CST)) {
908 mask |= AR_IMR_BCNMISC;
909 if (ints & ATH9K_INT_GTT)
910 mask2 |= AR_IMR_S2_GTT;
911 if (ints & ATH9K_INT_CST)
912 mask2 |= AR_IMR_S2_CST;
915 ath_dbg(common, ATH_DBG_INTERRUPT, "new IMR 0x%x\n", mask);
916 REG_WRITE(ah, AR_IMR, mask);
917 ah->imrs2_reg &= ~(AR_IMR_S2_TIM | AR_IMR_S2_DTIM | AR_IMR_S2_DTIMSYNC |
918 AR_IMR_S2_CABEND | AR_IMR_S2_CABTO |
919 AR_IMR_S2_TSFOOR | AR_IMR_S2_GTT | AR_IMR_S2_CST);
920 ah->imrs2_reg |= mask2;
921 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
923 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
924 if (ints & ATH9K_INT_TIM_TIMER)
925 REG_SET_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
927 REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
932 EXPORT_SYMBOL(ath9k_hw_set_interrupts);