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.
19 #include <linux/export.h>
21 static void ath9k_hw_set_txq_interrupts(struct ath_hw *ah,
22 struct ath9k_tx_queue_info *qi)
24 ath_dbg(ath9k_hw_common(ah), ATH_DBG_INTERRUPT,
25 "tx ok 0x%x err 0x%x desc 0x%x eol 0x%x urn 0x%x\n",
26 ah->txok_interrupt_mask, ah->txerr_interrupt_mask,
27 ah->txdesc_interrupt_mask, ah->txeol_interrupt_mask,
28 ah->txurn_interrupt_mask);
30 ENABLE_REGWRITE_BUFFER(ah);
32 REG_WRITE(ah, AR_IMR_S0,
33 SM(ah->txok_interrupt_mask, AR_IMR_S0_QCU_TXOK)
34 | SM(ah->txdesc_interrupt_mask, AR_IMR_S0_QCU_TXDESC));
35 REG_WRITE(ah, AR_IMR_S1,
36 SM(ah->txerr_interrupt_mask, AR_IMR_S1_QCU_TXERR)
37 | SM(ah->txeol_interrupt_mask, AR_IMR_S1_QCU_TXEOL));
39 ah->imrs2_reg &= ~AR_IMR_S2_QCU_TXURN;
40 ah->imrs2_reg |= (ah->txurn_interrupt_mask & AR_IMR_S2_QCU_TXURN);
41 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
43 REGWRITE_BUFFER_FLUSH(ah);
46 u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q)
48 return REG_READ(ah, AR_QTXDP(q));
50 EXPORT_SYMBOL(ath9k_hw_gettxbuf);
52 void ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp)
54 REG_WRITE(ah, AR_QTXDP(q), txdp);
56 EXPORT_SYMBOL(ath9k_hw_puttxbuf);
58 void ath9k_hw_txstart(struct ath_hw *ah, u32 q)
60 ath_dbg(ath9k_hw_common(ah), ATH_DBG_QUEUE,
61 "Enable TXE on queue: %u\n", q);
62 REG_WRITE(ah, AR_Q_TXE, 1 << q);
64 EXPORT_SYMBOL(ath9k_hw_txstart);
66 u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q)
70 npend = REG_READ(ah, AR_QSTS(q)) & AR_Q_STS_PEND_FR_CNT;
73 if (REG_READ(ah, AR_Q_TXE) & (1 << q))
79 EXPORT_SYMBOL(ath9k_hw_numtxpending);
82 * ath9k_hw_updatetxtriglevel - adjusts the frame trigger level
84 * @ah: atheros hardware struct
85 * @bIncTrigLevel: whether or not the frame trigger level should be updated
87 * The frame trigger level specifies the minimum number of bytes,
88 * in units of 64 bytes, that must be DMA'ed into the PCU TX FIFO
89 * before the PCU will initiate sending the frame on the air. This can
90 * mean we initiate transmit before a full frame is on the PCU TX FIFO.
91 * Resets to 0x1 (meaning 64 bytes or a full frame, whichever occurs
94 * Caution must be taken to ensure to set the frame trigger level based
95 * on the DMA request size. For example if the DMA request size is set to
96 * 128 bytes the trigger level cannot exceed 6 * 64 = 384. This is because
97 * there need to be enough space in the tx FIFO for the requested transfer
98 * size. Hence the tx FIFO will stop with 512 - 128 = 384 bytes. If we set
99 * the threshold to a value beyond 6, then the transmit will hang.
101 * Current dual stream devices have a PCU TX FIFO size of 8 KB.
102 * Current single stream devices have a PCU TX FIFO size of 4 KB, however,
103 * there is a hardware issue which forces us to use 2 KB instead so the
104 * frame trigger level must not exceed 2 KB for these chipsets.
106 bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
108 u32 txcfg, curLevel, newLevel;
110 if (ah->tx_trig_level >= ah->config.max_txtrig_level)
113 ath9k_hw_disable_interrupts(ah);
115 txcfg = REG_READ(ah, AR_TXCFG);
116 curLevel = MS(txcfg, AR_FTRIG);
119 if (curLevel < ah->config.max_txtrig_level)
121 } else if (curLevel > MIN_TX_FIFO_THRESHOLD)
123 if (newLevel != curLevel)
124 REG_WRITE(ah, AR_TXCFG,
125 (txcfg & ~AR_FTRIG) | SM(newLevel, AR_FTRIG));
127 ath9k_hw_enable_interrupts(ah);
129 ah->tx_trig_level = newLevel;
131 return newLevel != curLevel;
133 EXPORT_SYMBOL(ath9k_hw_updatetxtriglevel);
135 void ath9k_hw_abort_tx_dma(struct ath_hw *ah)
139 REG_WRITE(ah, AR_Q_TXD, AR_Q_TXD_M);
141 REG_SET_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
142 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
143 REG_SET_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
145 for (q = 0; q < AR_NUM_QCU; q++) {
146 for (i = 0; i < 1000; i++) {
150 if (!ath9k_hw_numtxpending(ah, q))
155 REG_CLR_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
156 REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
157 REG_CLR_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
159 REG_WRITE(ah, AR_Q_TXD, 0);
161 EXPORT_SYMBOL(ath9k_hw_abort_tx_dma);
163 bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q)
165 #define ATH9K_TX_STOP_DMA_TIMEOUT 1000 /* usec */
166 #define ATH9K_TIME_QUANTUM 100 /* usec */
167 int wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
170 REG_WRITE(ah, AR_Q_TXD, 1 << q);
172 for (wait = wait_time; wait != 0; wait--) {
173 if (wait != wait_time)
174 udelay(ATH9K_TIME_QUANTUM);
176 if (ath9k_hw_numtxpending(ah, q) == 0)
180 REG_WRITE(ah, AR_Q_TXD, 0);
184 #undef ATH9K_TX_STOP_DMA_TIMEOUT
185 #undef ATH9K_TIME_QUANTUM
187 EXPORT_SYMBOL(ath9k_hw_stop_dma_queue);
189 void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
191 *txqs &= ah->intr_txqs;
192 ah->intr_txqs &= ~(*txqs);
194 EXPORT_SYMBOL(ath9k_hw_gettxintrtxqs);
196 bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
197 const struct ath9k_tx_queue_info *qinfo)
200 struct ath_common *common = ath9k_hw_common(ah);
201 struct ath9k_tx_queue_info *qi;
204 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
205 ath_dbg(common, ATH_DBG_QUEUE,
206 "Set TXQ properties, inactive queue: %u\n", q);
210 ath_dbg(common, ATH_DBG_QUEUE, "Set queue properties for: %u\n", q);
212 qi->tqi_ver = qinfo->tqi_ver;
213 qi->tqi_subtype = qinfo->tqi_subtype;
214 qi->tqi_qflags = qinfo->tqi_qflags;
215 qi->tqi_priority = qinfo->tqi_priority;
216 if (qinfo->tqi_aifs != ATH9K_TXQ_USEDEFAULT)
217 qi->tqi_aifs = min(qinfo->tqi_aifs, 255U);
219 qi->tqi_aifs = INIT_AIFS;
220 if (qinfo->tqi_cwmin != ATH9K_TXQ_USEDEFAULT) {
221 cw = min(qinfo->tqi_cwmin, 1024U);
223 while (qi->tqi_cwmin < cw)
224 qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1;
226 qi->tqi_cwmin = qinfo->tqi_cwmin;
227 if (qinfo->tqi_cwmax != ATH9K_TXQ_USEDEFAULT) {
228 cw = min(qinfo->tqi_cwmax, 1024U);
230 while (qi->tqi_cwmax < cw)
231 qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1;
233 qi->tqi_cwmax = INIT_CWMAX;
235 if (qinfo->tqi_shretry != 0)
236 qi->tqi_shretry = min((u32) qinfo->tqi_shretry, 15U);
238 qi->tqi_shretry = INIT_SH_RETRY;
239 if (qinfo->tqi_lgretry != 0)
240 qi->tqi_lgretry = min((u32) qinfo->tqi_lgretry, 15U);
242 qi->tqi_lgretry = INIT_LG_RETRY;
243 qi->tqi_cbrPeriod = qinfo->tqi_cbrPeriod;
244 qi->tqi_cbrOverflowLimit = qinfo->tqi_cbrOverflowLimit;
245 qi->tqi_burstTime = qinfo->tqi_burstTime;
246 qi->tqi_readyTime = qinfo->tqi_readyTime;
248 switch (qinfo->tqi_subtype) {
250 if (qi->tqi_type == ATH9K_TX_QUEUE_DATA)
251 qi->tqi_intFlags = ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS;
259 EXPORT_SYMBOL(ath9k_hw_set_txq_props);
261 bool ath9k_hw_get_txq_props(struct ath_hw *ah, int q,
262 struct ath9k_tx_queue_info *qinfo)
264 struct ath_common *common = ath9k_hw_common(ah);
265 struct ath9k_tx_queue_info *qi;
268 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
269 ath_dbg(common, ATH_DBG_QUEUE,
270 "Get TXQ properties, inactive queue: %u\n", q);
274 qinfo->tqi_qflags = qi->tqi_qflags;
275 qinfo->tqi_ver = qi->tqi_ver;
276 qinfo->tqi_subtype = qi->tqi_subtype;
277 qinfo->tqi_qflags = qi->tqi_qflags;
278 qinfo->tqi_priority = qi->tqi_priority;
279 qinfo->tqi_aifs = qi->tqi_aifs;
280 qinfo->tqi_cwmin = qi->tqi_cwmin;
281 qinfo->tqi_cwmax = qi->tqi_cwmax;
282 qinfo->tqi_shretry = qi->tqi_shretry;
283 qinfo->tqi_lgretry = qi->tqi_lgretry;
284 qinfo->tqi_cbrPeriod = qi->tqi_cbrPeriod;
285 qinfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit;
286 qinfo->tqi_burstTime = qi->tqi_burstTime;
287 qinfo->tqi_readyTime = qi->tqi_readyTime;
291 EXPORT_SYMBOL(ath9k_hw_get_txq_props);
293 int ath9k_hw_setuptxqueue(struct ath_hw *ah, enum ath9k_tx_queue type,
294 const struct ath9k_tx_queue_info *qinfo)
296 struct ath_common *common = ath9k_hw_common(ah);
297 struct ath9k_tx_queue_info *qi;
301 case ATH9K_TX_QUEUE_BEACON:
302 q = ATH9K_NUM_TX_QUEUES - 1;
304 case ATH9K_TX_QUEUE_CAB:
305 q = ATH9K_NUM_TX_QUEUES - 2;
307 case ATH9K_TX_QUEUE_PSPOLL:
310 case ATH9K_TX_QUEUE_UAPSD:
311 q = ATH9K_NUM_TX_QUEUES - 3;
313 case ATH9K_TX_QUEUE_DATA:
314 for (q = 0; q < ATH9K_NUM_TX_QUEUES; q++)
315 if (ah->txq[q].tqi_type ==
316 ATH9K_TX_QUEUE_INACTIVE)
318 if (q == ATH9K_NUM_TX_QUEUES) {
319 ath_err(common, "No available TX queue\n");
324 ath_err(common, "Invalid TX queue type: %u\n", type);
328 ath_dbg(common, ATH_DBG_QUEUE, "Setup TX queue: %u\n", q);
331 if (qi->tqi_type != ATH9K_TX_QUEUE_INACTIVE) {
332 ath_err(common, "TX queue: %u already active\n", q);
335 memset(qi, 0, sizeof(struct ath9k_tx_queue_info));
337 qi->tqi_physCompBuf = qinfo->tqi_physCompBuf;
338 (void) ath9k_hw_set_txq_props(ah, q, qinfo);
342 EXPORT_SYMBOL(ath9k_hw_setuptxqueue);
344 bool ath9k_hw_releasetxqueue(struct ath_hw *ah, u32 q)
346 struct ath_common *common = ath9k_hw_common(ah);
347 struct ath9k_tx_queue_info *qi;
350 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
351 ath_dbg(common, ATH_DBG_QUEUE,
352 "Release TXQ, inactive queue: %u\n", q);
356 ath_dbg(common, ATH_DBG_QUEUE, "Release TX queue: %u\n", q);
358 qi->tqi_type = ATH9K_TX_QUEUE_INACTIVE;
359 ah->txok_interrupt_mask &= ~(1 << q);
360 ah->txerr_interrupt_mask &= ~(1 << q);
361 ah->txdesc_interrupt_mask &= ~(1 << q);
362 ah->txeol_interrupt_mask &= ~(1 << q);
363 ah->txurn_interrupt_mask &= ~(1 << q);
364 ath9k_hw_set_txq_interrupts(ah, qi);
368 EXPORT_SYMBOL(ath9k_hw_releasetxqueue);
370 bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q)
372 struct ath_common *common = ath9k_hw_common(ah);
373 struct ath9k_channel *chan = ah->curchan;
374 struct ath9k_tx_queue_info *qi;
375 u32 cwMin, chanCwMin, value;
378 if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
379 ath_dbg(common, ATH_DBG_QUEUE,
380 "Reset TXQ, inactive queue: %u\n", q);
384 ath_dbg(common, ATH_DBG_QUEUE, "Reset TX queue: %u\n", q);
386 if (qi->tqi_cwmin == ATH9K_TXQ_USEDEFAULT) {
387 if (chan && IS_CHAN_B(chan))
388 chanCwMin = INIT_CWMIN_11B;
390 chanCwMin = INIT_CWMIN;
392 for (cwMin = 1; cwMin < chanCwMin; cwMin = (cwMin << 1) | 1);
394 cwMin = qi->tqi_cwmin;
396 ENABLE_REGWRITE_BUFFER(ah);
398 REG_WRITE(ah, AR_DLCL_IFS(q),
399 SM(cwMin, AR_D_LCL_IFS_CWMIN) |
400 SM(qi->tqi_cwmax, AR_D_LCL_IFS_CWMAX) |
401 SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
403 REG_WRITE(ah, AR_DRETRY_LIMIT(q),
404 SM(INIT_SSH_RETRY, AR_D_RETRY_LIMIT_STA_SH) |
405 SM(INIT_SLG_RETRY, AR_D_RETRY_LIMIT_STA_LG) |
406 SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH));
408 REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ);
410 if (AR_SREV_9340(ah))
411 REG_WRITE(ah, AR_DMISC(q),
412 AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x1);
414 REG_WRITE(ah, AR_DMISC(q),
415 AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2);
417 if (qi->tqi_cbrPeriod) {
418 REG_WRITE(ah, AR_QCBRCFG(q),
419 SM(qi->tqi_cbrPeriod, AR_Q_CBRCFG_INTERVAL) |
420 SM(qi->tqi_cbrOverflowLimit, AR_Q_CBRCFG_OVF_THRESH));
421 REG_SET_BIT(ah, AR_QMISC(q), AR_Q_MISC_FSP_CBR |
422 (qi->tqi_cbrOverflowLimit ?
423 AR_Q_MISC_CBR_EXP_CNTR_LIMIT_EN : 0));
425 if (qi->tqi_readyTime && (qi->tqi_type != ATH9K_TX_QUEUE_CAB)) {
426 REG_WRITE(ah, AR_QRDYTIMECFG(q),
427 SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_DURATION) |
431 REG_WRITE(ah, AR_DCHNTIME(q),
432 SM(qi->tqi_burstTime, AR_D_CHNTIME_DUR) |
433 (qi->tqi_burstTime ? AR_D_CHNTIME_EN : 0));
435 if (qi->tqi_burstTime
436 && (qi->tqi_qflags & TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE))
437 REG_SET_BIT(ah, AR_QMISC(q), AR_Q_MISC_RDYTIME_EXP_POLICY);
439 if (qi->tqi_qflags & TXQ_FLAG_BACKOFF_DISABLE)
440 REG_SET_BIT(ah, AR_DMISC(q), AR_D_MISC_POST_FR_BKOFF_DIS);
442 REGWRITE_BUFFER_FLUSH(ah);
444 if (qi->tqi_qflags & TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE)
445 REG_SET_BIT(ah, AR_DMISC(q), AR_D_MISC_FRAG_BKOFF_EN);
447 switch (qi->tqi_type) {
448 case ATH9K_TX_QUEUE_BEACON:
449 ENABLE_REGWRITE_BUFFER(ah);
451 REG_SET_BIT(ah, AR_QMISC(q),
452 AR_Q_MISC_FSP_DBA_GATED
453 | AR_Q_MISC_BEACON_USE
454 | AR_Q_MISC_CBR_INCR_DIS1);
456 REG_SET_BIT(ah, AR_DMISC(q),
457 (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
458 AR_D_MISC_ARB_LOCKOUT_CNTRL_S)
459 | AR_D_MISC_BEACON_USE
460 | AR_D_MISC_POST_FR_BKOFF_DIS);
462 REGWRITE_BUFFER_FLUSH(ah);
465 * cwmin and cwmax should be 0 for beacon queue
466 * but not for IBSS as we would create an imbalance
467 * on beaconing fairness for participating nodes.
469 if (AR_SREV_9300_20_OR_LATER(ah) &&
470 ah->opmode != NL80211_IFTYPE_ADHOC) {
471 REG_WRITE(ah, AR_DLCL_IFS(q), SM(0, AR_D_LCL_IFS_CWMIN)
472 | SM(0, AR_D_LCL_IFS_CWMAX)
473 | SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
476 case ATH9K_TX_QUEUE_CAB:
477 ENABLE_REGWRITE_BUFFER(ah);
479 REG_SET_BIT(ah, AR_QMISC(q),
480 AR_Q_MISC_FSP_DBA_GATED
481 | AR_Q_MISC_CBR_INCR_DIS1
482 | AR_Q_MISC_CBR_INCR_DIS0);
483 value = (qi->tqi_readyTime -
484 (ah->config.sw_beacon_response_time -
485 ah->config.dma_beacon_response_time) -
486 ah->config.additional_swba_backoff) * 1024;
487 REG_WRITE(ah, AR_QRDYTIMECFG(q),
488 value | AR_Q_RDYTIMECFG_EN);
489 REG_SET_BIT(ah, AR_DMISC(q),
490 (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
491 AR_D_MISC_ARB_LOCKOUT_CNTRL_S));
493 REGWRITE_BUFFER_FLUSH(ah);
496 case ATH9K_TX_QUEUE_PSPOLL:
497 REG_SET_BIT(ah, AR_QMISC(q), AR_Q_MISC_CBR_INCR_DIS1);
499 case ATH9K_TX_QUEUE_UAPSD:
500 REG_SET_BIT(ah, AR_DMISC(q), AR_D_MISC_POST_FR_BKOFF_DIS);
506 if (qi->tqi_intFlags & ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS) {
507 REG_SET_BIT(ah, AR_DMISC(q),
508 SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
509 AR_D_MISC_ARB_LOCKOUT_CNTRL) |
510 AR_D_MISC_POST_FR_BKOFF_DIS);
513 if (AR_SREV_9300_20_OR_LATER(ah))
514 REG_WRITE(ah, AR_Q_DESC_CRCCHK, AR_Q_DESC_CRCCHK_EN);
516 if (qi->tqi_qflags & TXQ_FLAG_TXOKINT_ENABLE)
517 ah->txok_interrupt_mask |= 1 << q;
519 ah->txok_interrupt_mask &= ~(1 << q);
520 if (qi->tqi_qflags & TXQ_FLAG_TXERRINT_ENABLE)
521 ah->txerr_interrupt_mask |= 1 << q;
523 ah->txerr_interrupt_mask &= ~(1 << q);
524 if (qi->tqi_qflags & TXQ_FLAG_TXDESCINT_ENABLE)
525 ah->txdesc_interrupt_mask |= 1 << q;
527 ah->txdesc_interrupt_mask &= ~(1 << q);
528 if (qi->tqi_qflags & TXQ_FLAG_TXEOLINT_ENABLE)
529 ah->txeol_interrupt_mask |= 1 << q;
531 ah->txeol_interrupt_mask &= ~(1 << q);
532 if (qi->tqi_qflags & TXQ_FLAG_TXURNINT_ENABLE)
533 ah->txurn_interrupt_mask |= 1 << q;
535 ah->txurn_interrupt_mask &= ~(1 << q);
536 ath9k_hw_set_txq_interrupts(ah, qi);
540 EXPORT_SYMBOL(ath9k_hw_resettxqueue);
542 int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
543 struct ath_rx_status *rs)
545 struct ar5416_desc ads;
546 struct ar5416_desc *adsp = AR5416DESC(ds);
549 if ((adsp->ds_rxstatus8 & AR_RxDone) == 0)
552 ads.u.rx = adsp->u.rx;
557 rs->rs_datalen = ads.ds_rxstatus1 & AR_DataLen;
558 rs->rs_tstamp = ads.AR_RcvTimestamp;
560 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr) {
561 rs->rs_rssi = ATH9K_RSSI_BAD;
562 rs->rs_rssi_ctl0 = ATH9K_RSSI_BAD;
563 rs->rs_rssi_ctl1 = ATH9K_RSSI_BAD;
564 rs->rs_rssi_ctl2 = ATH9K_RSSI_BAD;
565 rs->rs_rssi_ext0 = ATH9K_RSSI_BAD;
566 rs->rs_rssi_ext1 = ATH9K_RSSI_BAD;
567 rs->rs_rssi_ext2 = ATH9K_RSSI_BAD;
569 rs->rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
570 rs->rs_rssi_ctl0 = MS(ads.ds_rxstatus0,
572 rs->rs_rssi_ctl1 = MS(ads.ds_rxstatus0,
574 rs->rs_rssi_ctl2 = MS(ads.ds_rxstatus0,
576 rs->rs_rssi_ext0 = MS(ads.ds_rxstatus4,
578 rs->rs_rssi_ext1 = MS(ads.ds_rxstatus4,
580 rs->rs_rssi_ext2 = MS(ads.ds_rxstatus4,
583 if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
584 rs->rs_keyix = MS(ads.ds_rxstatus8, AR_KeyIdx);
586 rs->rs_keyix = ATH9K_RXKEYIX_INVALID;
588 rs->rs_rate = MS(ads.ds_rxstatus0, AR_RxRate);
589 rs->rs_more = (ads.ds_rxstatus1 & AR_RxMore) ? 1 : 0;
591 rs->rs_isaggr = (ads.ds_rxstatus8 & AR_RxAggr) ? 1 : 0;
593 (ads.ds_rxstatus8 & AR_RxMoreAggr) ? 1 : 0;
594 rs->rs_antenna = MS(ads.ds_rxstatus3, AR_RxAntenna);
596 (ads.ds_rxstatus3 & AR_GI) ? ATH9K_RX_GI : 0;
598 (ads.ds_rxstatus3 & AR_2040) ? ATH9K_RX_2040 : 0;
600 if (ads.ds_rxstatus8 & AR_PreDelimCRCErr)
601 rs->rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
602 if (ads.ds_rxstatus8 & AR_PostDelimCRCErr)
603 rs->rs_flags |= ATH9K_RX_DELIM_CRC_POST;
604 if (ads.ds_rxstatus8 & AR_DecryptBusyErr)
605 rs->rs_flags |= ATH9K_RX_DECRYPT_BUSY;
607 if ((ads.ds_rxstatus8 & AR_RxFrameOK) == 0) {
609 * Treat these errors as mutually exclusive to avoid spurious
610 * extra error reports from the hardware. If a CRC error is
611 * reported, then decryption and MIC errors are irrelevant,
612 * the frame is going to be dropped either way
614 if (ads.ds_rxstatus8 & AR_CRCErr)
615 rs->rs_status |= ATH9K_RXERR_CRC;
616 else if (ads.ds_rxstatus8 & AR_PHYErr) {
617 rs->rs_status |= ATH9K_RXERR_PHY;
618 phyerr = MS(ads.ds_rxstatus8, AR_PHYErrCode);
619 rs->rs_phyerr = phyerr;
620 } else if (ads.ds_rxstatus8 & AR_DecryptCRCErr)
621 rs->rs_status |= ATH9K_RXERR_DECRYPT;
622 else if (ads.ds_rxstatus8 & AR_MichaelErr)
623 rs->rs_status |= ATH9K_RXERR_MIC;
624 if (ads.ds_rxstatus8 & AR_KeyMiss)
625 rs->rs_status |= ATH9K_RXERR_KEYMISS;
630 EXPORT_SYMBOL(ath9k_hw_rxprocdesc);
633 * This can stop or re-enables RX.
635 * If bool is set this will kill any frame which is currently being
636 * transferred between the MAC and baseband and also prevent any new
637 * frames from getting started.
639 bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set)
644 REG_SET_BIT(ah, AR_DIAG_SW,
645 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
647 if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE,
648 0, AH_WAIT_TIMEOUT)) {
649 REG_CLR_BIT(ah, AR_DIAG_SW,
653 reg = REG_READ(ah, AR_OBS_BUS_1);
654 ath_err(ath9k_hw_common(ah),
655 "RX failed to go idle in 10 ms RXSM=0x%x\n",
661 REG_CLR_BIT(ah, AR_DIAG_SW,
662 (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
667 EXPORT_SYMBOL(ath9k_hw_setrxabort);
669 void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp)
671 REG_WRITE(ah, AR_RXDP, rxdp);
673 EXPORT_SYMBOL(ath9k_hw_putrxbuf);
675 void ath9k_hw_startpcureceive(struct ath_hw *ah, bool is_scanning)
677 ath9k_enable_mib_counters(ah);
679 ath9k_ani_reset(ah, is_scanning);
681 REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
683 EXPORT_SYMBOL(ath9k_hw_startpcureceive);
685 void ath9k_hw_abortpcurecv(struct ath_hw *ah)
687 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS);
689 ath9k_hw_disable_mib_counters(ah);
691 EXPORT_SYMBOL(ath9k_hw_abortpcurecv);
693 bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset)
695 #define AH_RX_STOP_DMA_TIMEOUT 10000 /* usec */
696 struct ath_common *common = ath9k_hw_common(ah);
697 u32 mac_status, last_mac_status = 0;
700 /* Enable access to the DMA observation bus */
701 REG_WRITE(ah, AR_MACMISC,
702 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
703 (AR_MACMISC_MISC_OBS_BUS_1 <<
704 AR_MACMISC_MISC_OBS_BUS_MSB_S)));
706 REG_WRITE(ah, AR_CR, AR_CR_RXD);
708 /* Wait for rx enable bit to go low */
709 for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) {
710 if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0)
713 if (!AR_SREV_9300_20_OR_LATER(ah)) {
714 mac_status = REG_READ(ah, AR_DMADBG_7) & 0x7f0;
715 if (mac_status == 0x1c0 && mac_status == last_mac_status) {
720 last_mac_status = mac_status;
723 udelay(AH_TIME_QUANTUM);
728 "DMA failed to stop in %d ms AR_CR=0x%08x AR_DIAG_SW=0x%08x DMADBG_7=0x%08x\n",
729 AH_RX_STOP_DMA_TIMEOUT / 1000,
731 REG_READ(ah, AR_DIAG_SW),
732 REG_READ(ah, AR_DMADBG_7));
738 #undef AH_RX_STOP_DMA_TIMEOUT
740 EXPORT_SYMBOL(ath9k_hw_stopdmarecv);
742 int ath9k_hw_beaconq_setup(struct ath_hw *ah)
744 struct ath9k_tx_queue_info qi;
746 memset(&qi, 0, sizeof(qi));
750 /* NB: don't enable any interrupts */
751 return ath9k_hw_setuptxqueue(ah, ATH9K_TX_QUEUE_BEACON, &qi);
753 EXPORT_SYMBOL(ath9k_hw_beaconq_setup);
755 bool ath9k_hw_intrpend(struct ath_hw *ah)
759 if (AR_SREV_9100(ah))
762 host_isr = REG_READ(ah, AR_INTR_ASYNC_CAUSE);
763 if ((host_isr & AR_INTR_MAC_IRQ) && (host_isr != AR_INTR_SPURIOUS))
766 host_isr = REG_READ(ah, AR_INTR_SYNC_CAUSE);
767 if ((host_isr & AR_INTR_SYNC_DEFAULT)
768 && (host_isr != AR_INTR_SPURIOUS))
773 EXPORT_SYMBOL(ath9k_hw_intrpend);
775 void ath9k_hw_disable_interrupts(struct ath_hw *ah)
777 struct ath_common *common = ath9k_hw_common(ah);
779 if (!(ah->imask & ATH9K_INT_GLOBAL))
780 atomic_set(&ah->intr_ref_cnt, -1);
782 atomic_dec(&ah->intr_ref_cnt);
784 ath_dbg(common, ATH_DBG_INTERRUPT, "disable IER\n");
785 REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
786 (void) REG_READ(ah, AR_IER);
787 if (!AR_SREV_9100(ah)) {
788 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, 0);
789 (void) REG_READ(ah, AR_INTR_ASYNC_ENABLE);
791 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
792 (void) REG_READ(ah, AR_INTR_SYNC_ENABLE);
795 EXPORT_SYMBOL(ath9k_hw_disable_interrupts);
797 void ath9k_hw_enable_interrupts(struct ath_hw *ah)
799 struct ath_common *common = ath9k_hw_common(ah);
800 u32 sync_default = AR_INTR_SYNC_DEFAULT;
802 if (!(ah->imask & ATH9K_INT_GLOBAL))
805 if (!atomic_inc_and_test(&ah->intr_ref_cnt)) {
806 ath_dbg(common, ATH_DBG_INTERRUPT,
807 "Do not enable IER ref count %d\n",
808 atomic_read(&ah->intr_ref_cnt));
812 if (AR_SREV_9340(ah))
813 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
815 ath_dbg(common, ATH_DBG_INTERRUPT, "enable IER\n");
816 REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
817 if (!AR_SREV_9100(ah)) {
818 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
820 REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
823 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
824 REG_WRITE(ah, AR_INTR_SYNC_MASK, sync_default);
826 ath_dbg(common, ATH_DBG_INTERRUPT, "AR_IMR 0x%x IER 0x%x\n",
827 REG_READ(ah, AR_IMR), REG_READ(ah, AR_IER));
829 EXPORT_SYMBOL(ath9k_hw_enable_interrupts);
831 void ath9k_hw_set_interrupts(struct ath_hw *ah)
833 enum ath9k_int ints = ah->imask;
835 struct ath9k_hw_capabilities *pCap = &ah->caps;
836 struct ath_common *common = ath9k_hw_common(ah);
838 if (!(ints & ATH9K_INT_GLOBAL))
839 ath9k_hw_disable_interrupts(ah);
841 ath_dbg(common, ATH_DBG_INTERRUPT, "New interrupt mask 0x%x\n", ints);
843 mask = ints & ATH9K_INT_COMMON;
846 if (ints & ATH9K_INT_TX) {
847 if (ah->config.tx_intr_mitigation)
848 mask |= AR_IMR_TXMINTR | AR_IMR_TXINTM;
850 if (ah->txok_interrupt_mask)
852 if (ah->txdesc_interrupt_mask)
853 mask |= AR_IMR_TXDESC;
855 if (ah->txerr_interrupt_mask)
856 mask |= AR_IMR_TXERR;
857 if (ah->txeol_interrupt_mask)
858 mask |= AR_IMR_TXEOL;
860 if (ints & ATH9K_INT_RX) {
861 if (AR_SREV_9300_20_OR_LATER(ah)) {
862 mask |= AR_IMR_RXERR | AR_IMR_RXOK_HP;
863 if (ah->config.rx_intr_mitigation) {
864 mask &= ~AR_IMR_RXOK_LP;
865 mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
867 mask |= AR_IMR_RXOK_LP;
870 if (ah->config.rx_intr_mitigation)
871 mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
873 mask |= AR_IMR_RXOK | AR_IMR_RXDESC;
875 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
876 mask |= AR_IMR_GENTMR;
879 if (ints & ATH9K_INT_GENTIMER)
880 mask |= AR_IMR_GENTMR;
882 if (ints & (ATH9K_INT_BMISC)) {
883 mask |= AR_IMR_BCNMISC;
884 if (ints & ATH9K_INT_TIM)
885 mask2 |= AR_IMR_S2_TIM;
886 if (ints & ATH9K_INT_DTIM)
887 mask2 |= AR_IMR_S2_DTIM;
888 if (ints & ATH9K_INT_DTIMSYNC)
889 mask2 |= AR_IMR_S2_DTIMSYNC;
890 if (ints & ATH9K_INT_CABEND)
891 mask2 |= AR_IMR_S2_CABEND;
892 if (ints & ATH9K_INT_TSFOOR)
893 mask2 |= AR_IMR_S2_TSFOOR;
896 if (ints & (ATH9K_INT_GTT | ATH9K_INT_CST)) {
897 mask |= AR_IMR_BCNMISC;
898 if (ints & ATH9K_INT_GTT)
899 mask2 |= AR_IMR_S2_GTT;
900 if (ints & ATH9K_INT_CST)
901 mask2 |= AR_IMR_S2_CST;
904 ath_dbg(common, ATH_DBG_INTERRUPT, "new IMR 0x%x\n", mask);
905 REG_WRITE(ah, AR_IMR, mask);
906 ah->imrs2_reg &= ~(AR_IMR_S2_TIM | AR_IMR_S2_DTIM | AR_IMR_S2_DTIMSYNC |
907 AR_IMR_S2_CABEND | AR_IMR_S2_CABTO |
908 AR_IMR_S2_TSFOOR | AR_IMR_S2_GTT | AR_IMR_S2_CST);
909 ah->imrs2_reg |= mask2;
910 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
912 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
913 if (ints & ATH9K_INT_TIM_TIMER)
914 REG_SET_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
916 REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
921 EXPORT_SYMBOL(ath9k_hw_set_interrupts);