2 * Copyright (c) 2008-2010 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.
18 #include <asm/unaligned.h>
24 #define ATH9K_CLOCK_RATE_CCK 22
25 #define ATH9K_CLOCK_RATE_5GHZ_OFDM 40
26 #define ATH9K_CLOCK_RATE_2GHZ_OFDM 44
28 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
30 MODULE_AUTHOR("Atheros Communications");
31 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
32 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
33 MODULE_LICENSE("Dual BSD/GPL");
35 static int __init ath9k_init(void)
39 module_init(ath9k_init);
41 static void __exit ath9k_exit(void)
45 module_exit(ath9k_exit);
47 /* Private hardware callbacks */
49 static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
51 ath9k_hw_private_ops(ah)->init_cal_settings(ah);
54 static void ath9k_hw_init_mode_regs(struct ath_hw *ah)
56 ath9k_hw_private_ops(ah)->init_mode_regs(ah);
59 static bool ath9k_hw_macversion_supported(struct ath_hw *ah)
61 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
63 return priv_ops->macversion_supported(ah->hw_version.macVersion);
66 static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
67 struct ath9k_channel *chan)
69 return ath9k_hw_private_ops(ah)->compute_pll_control(ah, chan);
72 static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah)
74 if (!ath9k_hw_private_ops(ah)->init_mode_gain_regs)
77 ath9k_hw_private_ops(ah)->init_mode_gain_regs(ah);
80 /********************/
81 /* Helper Functions */
82 /********************/
84 static u32 ath9k_hw_mac_clks(struct ath_hw *ah, u32 usecs)
86 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
88 if (!ah->curchan) /* should really check for CCK instead */
89 return usecs *ATH9K_CLOCK_RATE_CCK;
90 if (conf->channel->band == IEEE80211_BAND_2GHZ)
91 return usecs *ATH9K_CLOCK_RATE_2GHZ_OFDM;
92 return usecs *ATH9K_CLOCK_RATE_5GHZ_OFDM;
95 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
97 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
99 if (conf_is_ht40(conf))
100 return ath9k_hw_mac_clks(ah, usecs) * 2;
102 return ath9k_hw_mac_clks(ah, usecs);
105 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
109 BUG_ON(timeout < AH_TIME_QUANTUM);
111 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
112 if ((REG_READ(ah, reg) & mask) == val)
115 udelay(AH_TIME_QUANTUM);
118 ath_print(ath9k_hw_common(ah), ATH_DBG_ANY,
119 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
120 timeout, reg, REG_READ(ah, reg), mask, val);
124 EXPORT_SYMBOL(ath9k_hw_wait);
126 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
131 for (i = 0, retval = 0; i < n; i++) {
132 retval = (retval << 1) | (val & 1);
138 bool ath9k_get_channel_edges(struct ath_hw *ah,
142 struct ath9k_hw_capabilities *pCap = &ah->caps;
144 if (flags & CHANNEL_5GHZ) {
145 *low = pCap->low_5ghz_chan;
146 *high = pCap->high_5ghz_chan;
149 if ((flags & CHANNEL_2GHZ)) {
150 *low = pCap->low_2ghz_chan;
151 *high = pCap->high_2ghz_chan;
157 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
159 u32 frameLen, u16 rateix,
162 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
168 case WLAN_RC_PHY_CCK:
169 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
172 numBits = frameLen << 3;
173 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
175 case WLAN_RC_PHY_OFDM:
176 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
177 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
178 numBits = OFDM_PLCP_BITS + (frameLen << 3);
179 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
180 txTime = OFDM_SIFS_TIME_QUARTER
181 + OFDM_PREAMBLE_TIME_QUARTER
182 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
183 } else if (ah->curchan &&
184 IS_CHAN_HALF_RATE(ah->curchan)) {
185 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
186 numBits = OFDM_PLCP_BITS + (frameLen << 3);
187 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
188 txTime = OFDM_SIFS_TIME_HALF +
189 OFDM_PREAMBLE_TIME_HALF
190 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
192 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
193 numBits = OFDM_PLCP_BITS + (frameLen << 3);
194 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
195 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
196 + (numSymbols * OFDM_SYMBOL_TIME);
200 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
201 "Unknown phy %u (rate ix %u)\n", phy, rateix);
208 EXPORT_SYMBOL(ath9k_hw_computetxtime);
210 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
211 struct ath9k_channel *chan,
212 struct chan_centers *centers)
216 if (!IS_CHAN_HT40(chan)) {
217 centers->ctl_center = centers->ext_center =
218 centers->synth_center = chan->channel;
222 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
223 (chan->chanmode == CHANNEL_G_HT40PLUS)) {
224 centers->synth_center =
225 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
228 centers->synth_center =
229 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
233 centers->ctl_center =
234 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
235 /* 25 MHz spacing is supported by hw but not on upper layers */
236 centers->ext_center =
237 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
244 static void ath9k_hw_read_revisions(struct ath_hw *ah)
248 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
251 val = REG_READ(ah, AR_SREV);
252 ah->hw_version.macVersion =
253 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
254 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
255 ah->is_pciexpress = (val & AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
257 if (!AR_SREV_9100(ah))
258 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
260 ah->hw_version.macRev = val & AR_SREV_REVISION;
262 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
263 ah->is_pciexpress = true;
267 static int ath9k_hw_get_radiorev(struct ath_hw *ah)
272 REG_WRITE(ah, AR_PHY(0x36), 0x00007058);
274 for (i = 0; i < 8; i++)
275 REG_WRITE(ah, AR_PHY(0x20), 0x00010000);
276 val = (REG_READ(ah, AR_PHY(256)) >> 24) & 0xff;
277 val = ((val & 0xf0) >> 4) | ((val & 0x0f) << 4);
279 return ath9k_hw_reverse_bits(val, 8);
282 /************************************/
283 /* HW Attach, Detach, Init Routines */
284 /************************************/
286 static void ath9k_hw_disablepcie(struct ath_hw *ah)
288 if (AR_SREV_9100(ah))
291 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
292 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
293 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
294 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
295 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
296 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
297 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
298 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
299 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
301 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
304 /* This should work for all families including legacy */
305 static bool ath9k_hw_chip_test(struct ath_hw *ah)
307 struct ath_common *common = ath9k_hw_common(ah);
308 u32 regAddr[2] = { AR_STA_ID0 };
310 u32 patternData[4] = { 0x55555555,
316 if (!AR_SREV_9300_20_OR_LATER(ah)) {
318 regAddr[1] = AR_PHY_BASE + (8 << 2);
322 for (i = 0; i < loop_max; i++) {
323 u32 addr = regAddr[i];
326 regHold[i] = REG_READ(ah, addr);
327 for (j = 0; j < 0x100; j++) {
328 wrData = (j << 16) | j;
329 REG_WRITE(ah, addr, wrData);
330 rdData = REG_READ(ah, addr);
331 if (rdData != wrData) {
332 ath_print(common, ATH_DBG_FATAL,
333 "address test failed "
334 "addr: 0x%08x - wr:0x%08x != "
336 addr, wrData, rdData);
340 for (j = 0; j < 4; j++) {
341 wrData = patternData[j];
342 REG_WRITE(ah, addr, wrData);
343 rdData = REG_READ(ah, addr);
344 if (wrData != rdData) {
345 ath_print(common, ATH_DBG_FATAL,
346 "address test failed "
347 "addr: 0x%08x - wr:0x%08x != "
349 addr, wrData, rdData);
353 REG_WRITE(ah, regAddr[i], regHold[i]);
360 static void ath9k_hw_init_config(struct ath_hw *ah)
364 ah->config.dma_beacon_response_time = 2;
365 ah->config.sw_beacon_response_time = 10;
366 ah->config.additional_swba_backoff = 0;
367 ah->config.ack_6mb = 0x0;
368 ah->config.cwm_ignore_extcca = 0;
369 ah->config.pcie_powersave_enable = 0;
370 ah->config.pcie_clock_req = 0;
371 ah->config.pcie_waen = 0;
372 ah->config.analog_shiftreg = 1;
373 ah->config.ofdm_trig_low = 200;
374 ah->config.ofdm_trig_high = 500;
375 ah->config.cck_trig_high = 200;
376 ah->config.cck_trig_low = 100;
379 * For now ANI is disabled for AR9003, it is still
382 if (!AR_SREV_9300_20_OR_LATER(ah))
383 ah->config.enable_ani = 1;
385 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
386 ah->config.spurchans[i][0] = AR_NO_SPUR;
387 ah->config.spurchans[i][1] = AR_NO_SPUR;
390 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
391 ah->config.ht_enable = 1;
393 ah->config.ht_enable = 0;
395 ah->config.rx_intr_mitigation = true;
398 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
399 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
400 * This means we use it for all AR5416 devices, and the few
401 * minor PCI AR9280 devices out there.
403 * Serialization is required because these devices do not handle
404 * well the case of two concurrent reads/writes due to the latency
405 * involved. During one read/write another read/write can be issued
406 * on another CPU while the previous read/write may still be working
407 * on our hardware, if we hit this case the hardware poops in a loop.
408 * We prevent this by serializing reads and writes.
410 * This issue is not present on PCI-Express devices or pre-AR5416
411 * devices (legacy, 802.11abg).
413 if (num_possible_cpus() > 1)
414 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
417 static void ath9k_hw_init_defaults(struct ath_hw *ah)
419 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
421 regulatory->country_code = CTRY_DEFAULT;
422 regulatory->power_limit = MAX_RATE_POWER;
423 regulatory->tp_scale = ATH9K_TP_SCALE_MAX;
425 ah->hw_version.magic = AR5416_MAGIC;
426 ah->hw_version.subvendorid = 0;
429 if (!AR_SREV_9100(ah))
430 ah->ah_flags = AH_USE_EEPROM;
433 ah->sta_id1_defaults = AR_STA_ID1_CRPT_MIC_ENABLE;
434 ah->beacon_interval = 100;
435 ah->enable_32kHz_clock = DONT_USE_32KHZ;
436 ah->slottime = (u32) -1;
437 ah->globaltxtimeout = (u32) -1;
438 ah->power_mode = ATH9K_PM_UNDEFINED;
441 static int ath9k_hw_rf_claim(struct ath_hw *ah)
445 REG_WRITE(ah, AR_PHY(0), 0x00000007);
447 val = ath9k_hw_get_radiorev(ah);
448 switch (val & AR_RADIO_SREV_MAJOR) {
450 val = AR_RAD5133_SREV_MAJOR;
452 case AR_RAD5133_SREV_MAJOR:
453 case AR_RAD5122_SREV_MAJOR:
454 case AR_RAD2133_SREV_MAJOR:
455 case AR_RAD2122_SREV_MAJOR:
458 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
459 "Radio Chip Rev 0x%02X not supported\n",
460 val & AR_RADIO_SREV_MAJOR);
464 ah->hw_version.analog5GhzRev = val;
469 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
471 struct ath_common *common = ath9k_hw_common(ah);
477 for (i = 0; i < 3; i++) {
478 eeval = ah->eep_ops->get_eeprom(ah, AR_EEPROM_MAC(i));
480 common->macaddr[2 * i] = eeval >> 8;
481 common->macaddr[2 * i + 1] = eeval & 0xff;
483 if (sum == 0 || sum == 0xffff * 3)
484 return -EADDRNOTAVAIL;
489 static int ath9k_hw_post_init(struct ath_hw *ah)
493 if (!AR_SREV_9271(ah)) {
494 if (!ath9k_hw_chip_test(ah))
498 ecode = ath9k_hw_rf_claim(ah);
502 ecode = ath9k_hw_eeprom_init(ah);
506 ath_print(ath9k_hw_common(ah), ATH_DBG_CONFIG,
507 "Eeprom VER: %d, REV: %d\n",
508 ah->eep_ops->get_eeprom_ver(ah),
509 ah->eep_ops->get_eeprom_rev(ah));
511 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
513 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
514 "Failed allocating banks for "
519 if (!AR_SREV_9100(ah)) {
520 ath9k_hw_ani_setup(ah);
521 ath9k_hw_ani_init(ah);
527 static void ath9k_hw_init_eeprom_fix(struct ath_hw *ah)
529 struct base_eep_header *pBase = &(ah->eeprom.def.baseEepHeader);
530 struct ath_common *common = ath9k_hw_common(ah);
532 ah->need_an_top2_fixup = (ah->hw_version.devid == AR9280_DEVID_PCI) &&
533 !AR_SREV_9285(ah) && !AR_SREV_9271(ah) &&
534 ((pBase->version & 0xff) > 0x0a) &&
535 (pBase->pwdclkind == 0);
537 if (ah->need_an_top2_fixup)
538 ath_print(common, ATH_DBG_EEPROM,
539 "needs fixup for AR_AN_TOP2 register\n");
542 static void ath9k_hw_attach_ops(struct ath_hw *ah)
544 if (AR_SREV_9300_20_OR_LATER(ah))
545 ar9003_hw_attach_ops(ah);
547 ar9002_hw_attach_ops(ah);
550 /* Called for all hardware families */
551 static int __ath9k_hw_init(struct ath_hw *ah)
553 struct ath_common *common = ath9k_hw_common(ah);
556 if (ah->hw_version.devid == AR5416_AR9100_DEVID)
557 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
559 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
560 ath_print(common, ATH_DBG_FATAL,
561 "Couldn't reset chip\n");
565 ath9k_hw_init_defaults(ah);
566 ath9k_hw_init_config(ah);
568 ath9k_hw_attach_ops(ah);
570 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
571 ath_print(common, ATH_DBG_FATAL, "Couldn't wakeup chip\n");
575 if (ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
576 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
577 (AR_SREV_9280(ah) && !ah->is_pciexpress)) {
578 ah->config.serialize_regmode =
581 ah->config.serialize_regmode =
586 ath_print(common, ATH_DBG_RESET, "serialize_regmode is %d\n",
587 ah->config.serialize_regmode);
589 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
590 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
592 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
594 if (!ath9k_hw_macversion_supported(ah)) {
595 ath_print(common, ATH_DBG_FATAL,
596 "Mac Chip Rev 0x%02x.%x is not supported by "
597 "this driver\n", ah->hw_version.macVersion,
598 ah->hw_version.macRev);
602 if (AR_SREV_9271(ah) || AR_SREV_9100(ah))
603 ah->is_pciexpress = false;
605 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
606 ath9k_hw_init_cal_settings(ah);
608 ah->ani_function = ATH9K_ANI_ALL;
609 if (AR_SREV_9280_10_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
610 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
612 ath9k_hw_init_mode_regs(ah);
614 if (ah->is_pciexpress)
615 ath9k_hw_configpcipowersave(ah, 0, 0);
617 ath9k_hw_disablepcie(ah);
619 if (!AR_SREV_9300_20_OR_LATER(ah))
620 ar9002_hw_cck_chan14_spread(ah);
622 r = ath9k_hw_post_init(ah);
626 ath9k_hw_init_mode_gain_regs(ah);
627 r = ath9k_hw_fill_cap_info(ah);
631 ath9k_hw_init_eeprom_fix(ah);
633 r = ath9k_hw_init_macaddr(ah);
635 ath_print(common, ATH_DBG_FATAL,
636 "Failed to initialize MAC address\n");
640 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
641 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
643 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
645 if (AR_SREV_9300_20_OR_LATER(ah))
646 ar9003_hw_set_nf_limits(ah);
648 ath9k_init_nfcal_hist_buffer(ah);
650 common->state = ATH_HW_INITIALIZED;
655 int ath9k_hw_init(struct ath_hw *ah)
658 struct ath_common *common = ath9k_hw_common(ah);
660 /* These are all the AR5008/AR9001/AR9002 hardware family of chipsets */
661 switch (ah->hw_version.devid) {
662 case AR5416_DEVID_PCI:
663 case AR5416_DEVID_PCIE:
664 case AR5416_AR9100_DEVID:
665 case AR9160_DEVID_PCI:
666 case AR9280_DEVID_PCI:
667 case AR9280_DEVID_PCIE:
668 case AR9285_DEVID_PCIE:
669 case AR9287_DEVID_PCI:
670 case AR9287_DEVID_PCIE:
671 case AR2427_DEVID_PCIE:
672 case AR9300_DEVID_PCIE:
675 if (common->bus_ops->ath_bus_type == ATH_USB)
677 ath_print(common, ATH_DBG_FATAL,
678 "Hardware device ID 0x%04x not supported\n",
679 ah->hw_version.devid);
683 ret = __ath9k_hw_init(ah);
685 ath_print(common, ATH_DBG_FATAL,
686 "Unable to initialize hardware; "
687 "initialization status: %d\n", ret);
693 EXPORT_SYMBOL(ath9k_hw_init);
695 static void ath9k_hw_init_qos(struct ath_hw *ah)
697 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
698 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
700 REG_WRITE(ah, AR_QOS_NO_ACK,
701 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
702 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
703 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
705 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
706 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
707 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
708 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
709 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
712 static void ath9k_hw_init_pll(struct ath_hw *ah,
713 struct ath9k_channel *chan)
715 u32 pll = ath9k_hw_compute_pll_control(ah, chan);
717 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
719 /* Switch the core clock for ar9271 to 117Mhz */
720 if (AR_SREV_9271(ah)) {
722 REG_WRITE(ah, 0x50040, 0x304);
725 udelay(RTC_PLL_SETTLE_DELAY);
727 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
730 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
731 enum nl80211_iftype opmode)
733 u32 imr_reg = AR_IMR_TXERR |
739 if (ah->config.rx_intr_mitigation)
740 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
742 imr_reg |= AR_IMR_RXOK;
744 imr_reg |= AR_IMR_TXOK;
746 if (opmode == NL80211_IFTYPE_AP)
747 imr_reg |= AR_IMR_MIB;
749 REG_WRITE(ah, AR_IMR, imr_reg);
750 ah->imrs2_reg |= AR_IMR_S2_GTT;
751 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
753 if (!AR_SREV_9100(ah)) {
754 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
755 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, AR_INTR_SYNC_DEFAULT);
756 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
760 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
762 u32 val = ath9k_hw_mac_to_clks(ah, us);
763 val = min(val, (u32) 0xFFFF);
764 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
767 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
769 u32 val = ath9k_hw_mac_to_clks(ah, us);
770 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
771 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
774 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
776 u32 val = ath9k_hw_mac_to_clks(ah, us);
777 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
778 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
781 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
784 ath_print(ath9k_hw_common(ah), ATH_DBG_XMIT,
785 "bad global tx timeout %u\n", tu);
786 ah->globaltxtimeout = (u32) -1;
789 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
790 ah->globaltxtimeout = tu;
795 void ath9k_hw_init_global_settings(struct ath_hw *ah)
797 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
802 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
805 if (ah->misc_mode != 0)
806 REG_WRITE(ah, AR_PCU_MISC,
807 REG_READ(ah, AR_PCU_MISC) | ah->misc_mode);
809 if (conf->channel && conf->channel->band == IEEE80211_BAND_5GHZ)
814 /* As defined by IEEE 802.11-2007 17.3.8.6 */
815 slottime = ah->slottime + 3 * ah->coverage_class;
816 acktimeout = slottime + sifstime;
819 * Workaround for early ACK timeouts, add an offset to match the
820 * initval's 64us ack timeout value.
821 * This was initially only meant to work around an issue with delayed
822 * BA frames in some implementations, but it has been found to fix ACK
823 * timeout issues in other cases as well.
825 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
826 acktimeout += 64 - sifstime - ah->slottime;
828 ath9k_hw_setslottime(ah, slottime);
829 ath9k_hw_set_ack_timeout(ah, acktimeout);
830 ath9k_hw_set_cts_timeout(ah, acktimeout);
831 if (ah->globaltxtimeout != (u32) -1)
832 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
834 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
836 void ath9k_hw_deinit(struct ath_hw *ah)
838 struct ath_common *common = ath9k_hw_common(ah);
840 if (common->state < ATH_HW_INITIALIZED)
843 if (!AR_SREV_9100(ah))
844 ath9k_hw_ani_disable(ah);
846 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
849 ath9k_hw_rf_free_ext_banks(ah);
851 EXPORT_SYMBOL(ath9k_hw_deinit);
857 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
859 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
863 else if (IS_CHAN_G(chan))
871 /****************************************/
872 /* Reset and Channel Switching Routines */
873 /****************************************/
875 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
880 * set AHB_MODE not to do cacheline prefetches
882 regval = REG_READ(ah, AR_AHB_MODE);
883 REG_WRITE(ah, AR_AHB_MODE, regval | AR_AHB_PREFETCH_RD_EN);
886 * let mac dma reads be in 128 byte chunks
888 regval = REG_READ(ah, AR_TXCFG) & ~AR_TXCFG_DMASZ_MASK;
889 REG_WRITE(ah, AR_TXCFG, regval | AR_TXCFG_DMASZ_128B);
892 * Restore TX Trigger Level to its pre-reset value.
893 * The initial value depends on whether aggregation is enabled, and is
894 * adjusted whenever underruns are detected.
896 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
899 * let mac dma writes be in 128 byte chunks
901 regval = REG_READ(ah, AR_RXCFG) & ~AR_RXCFG_DMASZ_MASK;
902 REG_WRITE(ah, AR_RXCFG, regval | AR_RXCFG_DMASZ_128B);
905 * Setup receive FIFO threshold to hold off TX activities
907 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
910 * reduce the number of usable entries in PCU TXBUF to avoid
911 * wrap around issues.
913 if (AR_SREV_9285(ah)) {
914 /* For AR9285 the number of Fifos are reduced to half.
915 * So set the usable tx buf size also to half to
916 * avoid data/delimiter underruns
918 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
919 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
920 } else if (!AR_SREV_9271(ah)) {
921 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
922 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
926 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
930 val = REG_READ(ah, AR_STA_ID1);
931 val &= ~(AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC);
933 case NL80211_IFTYPE_AP:
934 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_STA_AP
935 | AR_STA_ID1_KSRCH_MODE);
936 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
938 case NL80211_IFTYPE_ADHOC:
939 case NL80211_IFTYPE_MESH_POINT:
940 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_ADHOC
941 | AR_STA_ID1_KSRCH_MODE);
942 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
944 case NL80211_IFTYPE_STATION:
945 case NL80211_IFTYPE_MONITOR:
946 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_KSRCH_MODE);
951 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
952 u32 *coef_mantissa, u32 *coef_exponent)
954 u32 coef_exp, coef_man;
956 for (coef_exp = 31; coef_exp > 0; coef_exp--)
957 if ((coef_scaled >> coef_exp) & 0x1)
960 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
962 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
964 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
965 *coef_exponent = coef_exp - 16;
968 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
973 if (AR_SREV_9100(ah)) {
974 u32 val = REG_READ(ah, AR_RTC_DERIVED_CLK);
975 val &= ~AR_RTC_DERIVED_CLK_PERIOD;
976 val |= SM(1, AR_RTC_DERIVED_CLK_PERIOD);
977 REG_WRITE(ah, AR_RTC_DERIVED_CLK, val);
978 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
981 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
982 AR_RTC_FORCE_WAKE_ON_INT);
984 if (AR_SREV_9100(ah)) {
985 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
986 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
988 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
990 (AR_INTR_SYNC_LOCAL_TIMEOUT |
991 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
993 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
996 if (!AR_SREV_9300_20_OR_LATER(ah))
998 REG_WRITE(ah, AR_RC, val);
1000 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1001 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1003 rst_flags = AR_RTC_RC_MAC_WARM;
1004 if (type == ATH9K_RESET_COLD)
1005 rst_flags |= AR_RTC_RC_MAC_COLD;
1008 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1011 REG_WRITE(ah, AR_RTC_RC, 0);
1012 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1013 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
1014 "RTC stuck in MAC reset\n");
1018 if (!AR_SREV_9100(ah))
1019 REG_WRITE(ah, AR_RC, 0);
1021 if (AR_SREV_9100(ah))
1027 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1029 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1030 AR_RTC_FORCE_WAKE_ON_INT);
1032 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1033 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1035 REG_WRITE(ah, AR_RTC_RESET, 0);
1037 if (!AR_SREV_9300_20_OR_LATER(ah))
1040 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1041 REG_WRITE(ah, AR_RC, 0);
1043 REG_WRITE(ah, AR_RTC_RESET, 1);
1045 if (!ath9k_hw_wait(ah,
1050 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
1051 "RTC not waking up\n");
1055 ath9k_hw_read_revisions(ah);
1057 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1060 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1062 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1063 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1066 case ATH9K_RESET_POWER_ON:
1067 return ath9k_hw_set_reset_power_on(ah);
1068 case ATH9K_RESET_WARM:
1069 case ATH9K_RESET_COLD:
1070 return ath9k_hw_set_reset(ah, type);
1076 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1077 struct ath9k_channel *chan)
1079 if (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)) {
1080 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON))
1082 } else if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
1085 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1088 ah->chip_fullsleep = false;
1089 ath9k_hw_init_pll(ah, chan);
1090 ath9k_hw_set_rfmode(ah, chan);
1095 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1096 struct ath9k_channel *chan)
1098 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
1099 struct ath_common *common = ath9k_hw_common(ah);
1100 struct ieee80211_channel *channel = chan->chan;
1104 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1105 if (ath9k_hw_numtxpending(ah, qnum)) {
1106 ath_print(common, ATH_DBG_QUEUE,
1107 "Transmit frames pending on "
1108 "queue %d\n", qnum);
1113 if (!ath9k_hw_rfbus_req(ah)) {
1114 ath_print(common, ATH_DBG_FATAL,
1115 "Could not kill baseband RX\n");
1119 ath9k_hw_set_channel_regs(ah, chan);
1121 r = ath9k_hw_rf_set_freq(ah, chan);
1123 ath_print(common, ATH_DBG_FATAL,
1124 "Failed to set channel\n");
1128 ah->eep_ops->set_txpower(ah, chan,
1129 ath9k_regd_get_ctl(regulatory, chan),
1130 channel->max_antenna_gain * 2,
1131 channel->max_power * 2,
1132 min((u32) MAX_RATE_POWER,
1133 (u32) regulatory->power_limit));
1135 ath9k_hw_rfbus_done(ah);
1137 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1138 ath9k_hw_set_delta_slope(ah, chan);
1140 ath9k_hw_spur_mitigate_freq(ah, chan);
1142 if (!chan->oneTimeCalsDone)
1143 chan->oneTimeCalsDone = true;
1148 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1149 bool bChannelChange)
1151 struct ath_common *common = ath9k_hw_common(ah);
1153 struct ath9k_channel *curchan = ah->curchan;
1159 ah->txchainmask = common->tx_chainmask;
1160 ah->rxchainmask = common->rx_chainmask;
1162 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1165 if (curchan && !ah->chip_fullsleep)
1166 ath9k_hw_getnf(ah, curchan);
1168 if (bChannelChange &&
1169 (ah->chip_fullsleep != true) &&
1170 (ah->curchan != NULL) &&
1171 (chan->channel != ah->curchan->channel) &&
1172 ((chan->channelFlags & CHANNEL_ALL) ==
1173 (ah->curchan->channelFlags & CHANNEL_ALL)) &&
1174 !(AR_SREV_9280(ah) || IS_CHAN_A_5MHZ_SPACED(chan) ||
1175 IS_CHAN_A_5MHZ_SPACED(ah->curchan))) {
1177 if (ath9k_hw_channel_change(ah, chan)) {
1178 ath9k_hw_loadnf(ah, ah->curchan);
1179 ath9k_hw_start_nfcal(ah);
1184 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1185 if (saveDefAntenna == 0)
1188 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1190 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1191 if (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1192 tsf = ath9k_hw_gettsf64(ah);
1194 saveLedState = REG_READ(ah, AR_CFG_LED) &
1195 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1196 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1198 ath9k_hw_mark_phy_inactive(ah);
1200 /* Only required on the first reset */
1201 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1203 AR9271_RESET_POWER_DOWN_CONTROL,
1204 AR9271_RADIO_RF_RST);
1208 if (!ath9k_hw_chip_reset(ah, chan)) {
1209 ath_print(common, ATH_DBG_FATAL, "Chip reset failed\n");
1213 /* Only required on the first reset */
1214 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1215 ah->htc_reset_init = false;
1217 AR9271_RESET_POWER_DOWN_CONTROL,
1218 AR9271_GATE_MAC_CTL);
1223 if (tsf && AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1224 ath9k_hw_settsf64(ah, tsf);
1226 if (AR_SREV_9280_10_OR_LATER(ah))
1227 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1229 r = ath9k_hw_process_ini(ah, chan);
1233 /* Setup MFP options for CCMP */
1234 if (AR_SREV_9280_20_OR_LATER(ah)) {
1235 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1236 * frames when constructing CCMP AAD. */
1237 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1239 ah->sw_mgmt_crypto = false;
1240 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1241 /* Disable hardware crypto for management frames */
1242 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1243 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1244 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1245 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1246 ah->sw_mgmt_crypto = true;
1248 ah->sw_mgmt_crypto = true;
1250 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1251 ath9k_hw_set_delta_slope(ah, chan);
1253 ath9k_hw_spur_mitigate_freq(ah, chan);
1254 ah->eep_ops->set_board_values(ah, chan);
1256 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1257 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1259 | AR_STA_ID1_RTS_USE_DEF
1261 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1262 | ah->sta_id1_defaults);
1263 ath9k_hw_set_operating_mode(ah, ah->opmode);
1265 ath_hw_setbssidmask(common);
1267 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1269 ath9k_hw_write_associd(ah);
1271 REG_WRITE(ah, AR_ISR, ~0);
1273 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1275 r = ath9k_hw_rf_set_freq(ah, chan);
1279 for (i = 0; i < AR_NUM_DCU; i++)
1280 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1283 for (i = 0; i < ah->caps.total_queues; i++)
1284 ath9k_hw_resettxqueue(ah, i);
1286 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1287 ath9k_hw_init_qos(ah);
1289 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1290 ath9k_enable_rfkill(ah);
1292 ath9k_hw_init_global_settings(ah);
1294 if (AR_SREV_9287_12_OR_LATER(ah)) {
1295 REG_WRITE(ah, AR_D_GBL_IFS_SIFS,
1296 AR_D_GBL_IFS_SIFS_ASYNC_FIFO_DUR);
1297 REG_WRITE(ah, AR_D_GBL_IFS_SLOT,
1298 AR_D_GBL_IFS_SLOT_ASYNC_FIFO_DUR);
1299 REG_WRITE(ah, AR_D_GBL_IFS_EIFS,
1300 AR_D_GBL_IFS_EIFS_ASYNC_FIFO_DUR);
1302 REG_WRITE(ah, AR_TIME_OUT, AR_TIME_OUT_ACK_CTS_ASYNC_FIFO_DUR);
1303 REG_WRITE(ah, AR_USEC, AR_USEC_ASYNC_FIFO_DUR);
1305 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1306 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1307 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1308 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1310 if (AR_SREV_9287_12_OR_LATER(ah)) {
1311 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1312 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1315 REG_WRITE(ah, AR_STA_ID1,
1316 REG_READ(ah, AR_STA_ID1) | AR_STA_ID1_PRESERVE_SEQNUM);
1318 ath9k_hw_set_dma(ah);
1320 REG_WRITE(ah, AR_OBS, 8);
1322 if (ah->config.rx_intr_mitigation) {
1323 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1324 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1327 ath9k_hw_init_bb(ah, chan);
1329 if (!ath9k_hw_init_cal(ah, chan))
1332 ath9k_hw_restore_chainmask(ah);
1333 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1336 * For big endian systems turn on swapping for descriptors
1338 if (AR_SREV_9100(ah)) {
1340 mask = REG_READ(ah, AR_CFG);
1341 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1342 ath_print(common, ATH_DBG_RESET,
1343 "CFG Byte Swap Set 0x%x\n", mask);
1346 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1347 REG_WRITE(ah, AR_CFG, mask);
1348 ath_print(common, ATH_DBG_RESET,
1349 "Setting CFG 0x%x\n", REG_READ(ah, AR_CFG));
1352 /* Configure AR9271 target WLAN */
1353 if (AR_SREV_9271(ah))
1354 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1357 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1361 if (ah->btcoex_hw.enabled)
1362 ath9k_hw_btcoex_enable(ah);
1366 EXPORT_SYMBOL(ath9k_hw_reset);
1368 /************************/
1369 /* Key Cache Management */
1370 /************************/
1372 bool ath9k_hw_keyreset(struct ath_hw *ah, u16 entry)
1376 if (entry >= ah->caps.keycache_size) {
1377 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
1378 "keychache entry %u out of range\n", entry);
1382 keyType = REG_READ(ah, AR_KEYTABLE_TYPE(entry));
1384 REG_WRITE(ah, AR_KEYTABLE_KEY0(entry), 0);
1385 REG_WRITE(ah, AR_KEYTABLE_KEY1(entry), 0);
1386 REG_WRITE(ah, AR_KEYTABLE_KEY2(entry), 0);
1387 REG_WRITE(ah, AR_KEYTABLE_KEY3(entry), 0);
1388 REG_WRITE(ah, AR_KEYTABLE_KEY4(entry), 0);
1389 REG_WRITE(ah, AR_KEYTABLE_TYPE(entry), AR_KEYTABLE_TYPE_CLR);
1390 REG_WRITE(ah, AR_KEYTABLE_MAC0(entry), 0);
1391 REG_WRITE(ah, AR_KEYTABLE_MAC1(entry), 0);
1393 if (keyType == AR_KEYTABLE_TYPE_TKIP && ATH9K_IS_MIC_ENABLED(ah)) {
1394 u16 micentry = entry + 64;
1396 REG_WRITE(ah, AR_KEYTABLE_KEY0(micentry), 0);
1397 REG_WRITE(ah, AR_KEYTABLE_KEY1(micentry), 0);
1398 REG_WRITE(ah, AR_KEYTABLE_KEY2(micentry), 0);
1399 REG_WRITE(ah, AR_KEYTABLE_KEY3(micentry), 0);
1405 EXPORT_SYMBOL(ath9k_hw_keyreset);
1407 bool ath9k_hw_keysetmac(struct ath_hw *ah, u16 entry, const u8 *mac)
1411 if (entry >= ah->caps.keycache_size) {
1412 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
1413 "keychache entry %u out of range\n", entry);
1418 macHi = (mac[5] << 8) | mac[4];
1419 macLo = (mac[3] << 24) |
1424 macLo |= (macHi & 1) << 31;
1429 REG_WRITE(ah, AR_KEYTABLE_MAC0(entry), macLo);
1430 REG_WRITE(ah, AR_KEYTABLE_MAC1(entry), macHi | AR_KEYTABLE_VALID);
1434 EXPORT_SYMBOL(ath9k_hw_keysetmac);
1436 bool ath9k_hw_set_keycache_entry(struct ath_hw *ah, u16 entry,
1437 const struct ath9k_keyval *k,
1440 const struct ath9k_hw_capabilities *pCap = &ah->caps;
1441 struct ath_common *common = ath9k_hw_common(ah);
1442 u32 key0, key1, key2, key3, key4;
1445 if (entry >= pCap->keycache_size) {
1446 ath_print(common, ATH_DBG_FATAL,
1447 "keycache entry %u out of range\n", entry);
1451 switch (k->kv_type) {
1452 case ATH9K_CIPHER_AES_OCB:
1453 keyType = AR_KEYTABLE_TYPE_AES;
1455 case ATH9K_CIPHER_AES_CCM:
1456 if (!(pCap->hw_caps & ATH9K_HW_CAP_CIPHER_AESCCM)) {
1457 ath_print(common, ATH_DBG_ANY,
1458 "AES-CCM not supported by mac rev 0x%x\n",
1459 ah->hw_version.macRev);
1462 keyType = AR_KEYTABLE_TYPE_CCM;
1464 case ATH9K_CIPHER_TKIP:
1465 keyType = AR_KEYTABLE_TYPE_TKIP;
1466 if (ATH9K_IS_MIC_ENABLED(ah)
1467 && entry + 64 >= pCap->keycache_size) {
1468 ath_print(common, ATH_DBG_ANY,
1469 "entry %u inappropriate for TKIP\n", entry);
1473 case ATH9K_CIPHER_WEP:
1474 if (k->kv_len < WLAN_KEY_LEN_WEP40) {
1475 ath_print(common, ATH_DBG_ANY,
1476 "WEP key length %u too small\n", k->kv_len);
1479 if (k->kv_len <= WLAN_KEY_LEN_WEP40)
1480 keyType = AR_KEYTABLE_TYPE_40;
1481 else if (k->kv_len <= WLAN_KEY_LEN_WEP104)
1482 keyType = AR_KEYTABLE_TYPE_104;
1484 keyType = AR_KEYTABLE_TYPE_128;
1486 case ATH9K_CIPHER_CLR:
1487 keyType = AR_KEYTABLE_TYPE_CLR;
1490 ath_print(common, ATH_DBG_FATAL,
1491 "cipher %u not supported\n", k->kv_type);
1495 key0 = get_unaligned_le32(k->kv_val + 0);
1496 key1 = get_unaligned_le16(k->kv_val + 4);
1497 key2 = get_unaligned_le32(k->kv_val + 6);
1498 key3 = get_unaligned_le16(k->kv_val + 10);
1499 key4 = get_unaligned_le32(k->kv_val + 12);
1500 if (k->kv_len <= WLAN_KEY_LEN_WEP104)
1504 * Note: Key cache registers access special memory area that requires
1505 * two 32-bit writes to actually update the values in the internal
1506 * memory. Consequently, the exact order and pairs used here must be
1510 if (keyType == AR_KEYTABLE_TYPE_TKIP && ATH9K_IS_MIC_ENABLED(ah)) {
1511 u16 micentry = entry + 64;
1514 * Write inverted key[47:0] first to avoid Michael MIC errors
1515 * on frames that could be sent or received at the same time.
1516 * The correct key will be written in the end once everything
1519 REG_WRITE(ah, AR_KEYTABLE_KEY0(entry), ~key0);
1520 REG_WRITE(ah, AR_KEYTABLE_KEY1(entry), ~key1);
1522 /* Write key[95:48] */
1523 REG_WRITE(ah, AR_KEYTABLE_KEY2(entry), key2);
1524 REG_WRITE(ah, AR_KEYTABLE_KEY3(entry), key3);
1526 /* Write key[127:96] and key type */
1527 REG_WRITE(ah, AR_KEYTABLE_KEY4(entry), key4);
1528 REG_WRITE(ah, AR_KEYTABLE_TYPE(entry), keyType);
1530 /* Write MAC address for the entry */
1531 (void) ath9k_hw_keysetmac(ah, entry, mac);
1533 if (ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA) {
1535 * TKIP uses two key cache entries:
1536 * Michael MIC TX/RX keys in the same key cache entry
1537 * (idx = main index + 64):
1538 * key0 [31:0] = RX key [31:0]
1539 * key1 [15:0] = TX key [31:16]
1540 * key1 [31:16] = reserved
1541 * key2 [31:0] = RX key [63:32]
1542 * key3 [15:0] = TX key [15:0]
1543 * key3 [31:16] = reserved
1544 * key4 [31:0] = TX key [63:32]
1546 u32 mic0, mic1, mic2, mic3, mic4;
1548 mic0 = get_unaligned_le32(k->kv_mic + 0);
1549 mic2 = get_unaligned_le32(k->kv_mic + 4);
1550 mic1 = get_unaligned_le16(k->kv_txmic + 2) & 0xffff;
1551 mic3 = get_unaligned_le16(k->kv_txmic + 0) & 0xffff;
1552 mic4 = get_unaligned_le32(k->kv_txmic + 4);
1554 /* Write RX[31:0] and TX[31:16] */
1555 REG_WRITE(ah, AR_KEYTABLE_KEY0(micentry), mic0);
1556 REG_WRITE(ah, AR_KEYTABLE_KEY1(micentry), mic1);
1558 /* Write RX[63:32] and TX[15:0] */
1559 REG_WRITE(ah, AR_KEYTABLE_KEY2(micentry), mic2);
1560 REG_WRITE(ah, AR_KEYTABLE_KEY3(micentry), mic3);
1562 /* Write TX[63:32] and keyType(reserved) */
1563 REG_WRITE(ah, AR_KEYTABLE_KEY4(micentry), mic4);
1564 REG_WRITE(ah, AR_KEYTABLE_TYPE(micentry),
1565 AR_KEYTABLE_TYPE_CLR);
1569 * TKIP uses four key cache entries (two for group
1571 * Michael MIC TX/RX keys are in different key cache
1572 * entries (idx = main index + 64 for TX and
1573 * main index + 32 + 96 for RX):
1574 * key0 [31:0] = TX/RX MIC key [31:0]
1575 * key1 [31:0] = reserved
1576 * key2 [31:0] = TX/RX MIC key [63:32]
1577 * key3 [31:0] = reserved
1578 * key4 [31:0] = reserved
1580 * Upper layer code will call this function separately
1581 * for TX and RX keys when these registers offsets are
1586 mic0 = get_unaligned_le32(k->kv_mic + 0);
1587 mic2 = get_unaligned_le32(k->kv_mic + 4);
1589 /* Write MIC key[31:0] */
1590 REG_WRITE(ah, AR_KEYTABLE_KEY0(micentry), mic0);
1591 REG_WRITE(ah, AR_KEYTABLE_KEY1(micentry), 0);
1593 /* Write MIC key[63:32] */
1594 REG_WRITE(ah, AR_KEYTABLE_KEY2(micentry), mic2);
1595 REG_WRITE(ah, AR_KEYTABLE_KEY3(micentry), 0);
1597 /* Write TX[63:32] and keyType(reserved) */
1598 REG_WRITE(ah, AR_KEYTABLE_KEY4(micentry), 0);
1599 REG_WRITE(ah, AR_KEYTABLE_TYPE(micentry),
1600 AR_KEYTABLE_TYPE_CLR);
1603 /* MAC address registers are reserved for the MIC entry */
1604 REG_WRITE(ah, AR_KEYTABLE_MAC0(micentry), 0);
1605 REG_WRITE(ah, AR_KEYTABLE_MAC1(micentry), 0);
1608 * Write the correct (un-inverted) key[47:0] last to enable
1609 * TKIP now that all other registers are set with correct
1612 REG_WRITE(ah, AR_KEYTABLE_KEY0(entry), key0);
1613 REG_WRITE(ah, AR_KEYTABLE_KEY1(entry), key1);
1615 /* Write key[47:0] */
1616 REG_WRITE(ah, AR_KEYTABLE_KEY0(entry), key0);
1617 REG_WRITE(ah, AR_KEYTABLE_KEY1(entry), key1);
1619 /* Write key[95:48] */
1620 REG_WRITE(ah, AR_KEYTABLE_KEY2(entry), key2);
1621 REG_WRITE(ah, AR_KEYTABLE_KEY3(entry), key3);
1623 /* Write key[127:96] and key type */
1624 REG_WRITE(ah, AR_KEYTABLE_KEY4(entry), key4);
1625 REG_WRITE(ah, AR_KEYTABLE_TYPE(entry), keyType);
1627 /* Write MAC address for the entry */
1628 (void) ath9k_hw_keysetmac(ah, entry, mac);
1633 EXPORT_SYMBOL(ath9k_hw_set_keycache_entry);
1635 bool ath9k_hw_keyisvalid(struct ath_hw *ah, u16 entry)
1637 if (entry < ah->caps.keycache_size) {
1638 u32 val = REG_READ(ah, AR_KEYTABLE_MAC1(entry));
1639 if (val & AR_KEYTABLE_VALID)
1644 EXPORT_SYMBOL(ath9k_hw_keyisvalid);
1646 /******************************/
1647 /* Power Management (Chipset) */
1648 /******************************/
1651 * Notify Power Mgt is disabled in self-generated frames.
1652 * If requested, force chip to sleep.
1654 static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
1656 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1659 * Clear the RTC force wake bit to allow the
1660 * mac to go to sleep.
1662 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1663 AR_RTC_FORCE_WAKE_EN);
1664 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1665 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
1667 /* Shutdown chip. Active low */
1668 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah))
1669 REG_CLR_BIT(ah, (AR_RTC_RESET),
1675 * Notify Power Management is enabled in self-generating
1676 * frames. If request, set power mode of chip to
1677 * auto/normal. Duration in units of 128us (1/8 TU).
1679 static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip)
1681 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1683 struct ath9k_hw_capabilities *pCap = &ah->caps;
1685 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1686 /* Set WakeOnInterrupt bit; clear ForceWake bit */
1687 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1688 AR_RTC_FORCE_WAKE_ON_INT);
1691 * Clear the RTC force wake bit to allow the
1692 * mac to go to sleep.
1694 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1695 AR_RTC_FORCE_WAKE_EN);
1700 static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
1706 if ((REG_READ(ah, AR_RTC_STATUS) &
1707 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
1708 if (ath9k_hw_set_reset_reg(ah,
1709 ATH9K_RESET_POWER_ON) != true) {
1712 if (!AR_SREV_9300_20_OR_LATER(ah))
1713 ath9k_hw_init_pll(ah, NULL);
1715 if (AR_SREV_9100(ah))
1716 REG_SET_BIT(ah, AR_RTC_RESET,
1719 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1720 AR_RTC_FORCE_WAKE_EN);
1723 for (i = POWER_UP_TIME / 50; i > 0; i--) {
1724 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
1725 if (val == AR_RTC_STATUS_ON)
1728 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1729 AR_RTC_FORCE_WAKE_EN);
1732 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
1733 "Failed to wakeup in %uus\n",
1734 POWER_UP_TIME / 20);
1739 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1744 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
1746 struct ath_common *common = ath9k_hw_common(ah);
1747 int status = true, setChip = true;
1748 static const char *modes[] = {
1755 if (ah->power_mode == mode)
1758 ath_print(common, ATH_DBG_RESET, "%s -> %s\n",
1759 modes[ah->power_mode], modes[mode]);
1762 case ATH9K_PM_AWAKE:
1763 status = ath9k_hw_set_power_awake(ah, setChip);
1765 case ATH9K_PM_FULL_SLEEP:
1766 ath9k_set_power_sleep(ah, setChip);
1767 ah->chip_fullsleep = true;
1769 case ATH9K_PM_NETWORK_SLEEP:
1770 ath9k_set_power_network_sleep(ah, setChip);
1773 ath_print(common, ATH_DBG_FATAL,
1774 "Unknown power mode %u\n", mode);
1777 ah->power_mode = mode;
1781 EXPORT_SYMBOL(ath9k_hw_setpower);
1783 /**********************/
1784 /* Interrupt Handling */
1785 /**********************/
1787 bool ath9k_hw_intrpend(struct ath_hw *ah)
1791 if (AR_SREV_9100(ah))
1794 host_isr = REG_READ(ah, AR_INTR_ASYNC_CAUSE);
1795 if ((host_isr & AR_INTR_MAC_IRQ) && (host_isr != AR_INTR_SPURIOUS))
1798 host_isr = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1799 if ((host_isr & AR_INTR_SYNC_DEFAULT)
1800 && (host_isr != AR_INTR_SPURIOUS))
1805 EXPORT_SYMBOL(ath9k_hw_intrpend);
1807 bool ath9k_hw_getisr(struct ath_hw *ah, enum ath9k_int *masked)
1811 struct ath9k_hw_capabilities *pCap = &ah->caps;
1813 bool fatal_int = false;
1814 struct ath_common *common = ath9k_hw_common(ah);
1816 if (!AR_SREV_9100(ah)) {
1817 if (REG_READ(ah, AR_INTR_ASYNC_CAUSE) & AR_INTR_MAC_IRQ) {
1818 if ((REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M)
1819 == AR_RTC_STATUS_ON) {
1820 isr = REG_READ(ah, AR_ISR);
1824 sync_cause = REG_READ(ah, AR_INTR_SYNC_CAUSE) &
1825 AR_INTR_SYNC_DEFAULT;
1829 if (!isr && !sync_cause)
1833 isr = REG_READ(ah, AR_ISR);
1837 if (isr & AR_ISR_BCNMISC) {
1839 isr2 = REG_READ(ah, AR_ISR_S2);
1840 if (isr2 & AR_ISR_S2_TIM)
1841 mask2 |= ATH9K_INT_TIM;
1842 if (isr2 & AR_ISR_S2_DTIM)
1843 mask2 |= ATH9K_INT_DTIM;
1844 if (isr2 & AR_ISR_S2_DTIMSYNC)
1845 mask2 |= ATH9K_INT_DTIMSYNC;
1846 if (isr2 & (AR_ISR_S2_CABEND))
1847 mask2 |= ATH9K_INT_CABEND;
1848 if (isr2 & AR_ISR_S2_GTT)
1849 mask2 |= ATH9K_INT_GTT;
1850 if (isr2 & AR_ISR_S2_CST)
1851 mask2 |= ATH9K_INT_CST;
1852 if (isr2 & AR_ISR_S2_TSFOOR)
1853 mask2 |= ATH9K_INT_TSFOOR;
1856 isr = REG_READ(ah, AR_ISR_RAC);
1857 if (isr == 0xffffffff) {
1862 *masked = isr & ATH9K_INT_COMMON;
1864 if (ah->config.rx_intr_mitigation) {
1865 if (isr & (AR_ISR_RXMINTR | AR_ISR_RXINTM))
1866 *masked |= ATH9K_INT_RX;
1869 if (isr & (AR_ISR_RXOK | AR_ISR_RXERR))
1870 *masked |= ATH9K_INT_RX;
1872 (AR_ISR_TXOK | AR_ISR_TXDESC | AR_ISR_TXERR |
1876 *masked |= ATH9K_INT_TX;
1878 s0_s = REG_READ(ah, AR_ISR_S0_S);
1879 ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXOK);
1880 ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXDESC);
1882 s1_s = REG_READ(ah, AR_ISR_S1_S);
1883 ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXERR);
1884 ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXEOL);
1887 if (isr & AR_ISR_RXORN) {
1888 ath_print(common, ATH_DBG_INTERRUPT,
1889 "receive FIFO overrun interrupt\n");
1892 if (!AR_SREV_9100(ah)) {
1893 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1894 u32 isr5 = REG_READ(ah, AR_ISR_S5_S);
1895 if (isr5 & AR_ISR_S5_TIM_TIMER)
1896 *masked |= ATH9K_INT_TIM_TIMER;
1903 if (AR_SREV_9100(ah))
1906 if (isr & AR_ISR_GENTMR) {
1909 s5_s = REG_READ(ah, AR_ISR_S5_S);
1910 if (isr & AR_ISR_GENTMR) {
1911 ah->intr_gen_timer_trigger =
1912 MS(s5_s, AR_ISR_S5_GENTIMER_TRIG);
1914 ah->intr_gen_timer_thresh =
1915 MS(s5_s, AR_ISR_S5_GENTIMER_THRESH);
1917 if (ah->intr_gen_timer_trigger)
1918 *masked |= ATH9K_INT_GENTIMER;
1926 (AR_INTR_SYNC_HOST1_FATAL | AR_INTR_SYNC_HOST1_PERR))
1930 if (sync_cause & AR_INTR_SYNC_HOST1_FATAL) {
1931 ath_print(common, ATH_DBG_ANY,
1932 "received PCI FATAL interrupt\n");
1934 if (sync_cause & AR_INTR_SYNC_HOST1_PERR) {
1935 ath_print(common, ATH_DBG_ANY,
1936 "received PCI PERR interrupt\n");
1938 *masked |= ATH9K_INT_FATAL;
1940 if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT) {
1941 ath_print(common, ATH_DBG_INTERRUPT,
1942 "AR_INTR_SYNC_RADM_CPL_TIMEOUT\n");
1943 REG_WRITE(ah, AR_RC, AR_RC_HOSTIF);
1944 REG_WRITE(ah, AR_RC, 0);
1945 *masked |= ATH9K_INT_FATAL;
1947 if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT) {
1948 ath_print(common, ATH_DBG_INTERRUPT,
1949 "AR_INTR_SYNC_LOCAL_TIMEOUT\n");
1952 REG_WRITE(ah, AR_INTR_SYNC_CAUSE_CLR, sync_cause);
1953 (void) REG_READ(ah, AR_INTR_SYNC_CAUSE_CLR);
1958 EXPORT_SYMBOL(ath9k_hw_getisr);
1960 enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
1962 enum ath9k_int omask = ah->imask;
1964 struct ath9k_hw_capabilities *pCap = &ah->caps;
1965 struct ath_common *common = ath9k_hw_common(ah);
1967 ath_print(common, ATH_DBG_INTERRUPT, "0x%x => 0x%x\n", omask, ints);
1969 if (omask & ATH9K_INT_GLOBAL) {
1970 ath_print(common, ATH_DBG_INTERRUPT, "disable IER\n");
1971 REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
1972 (void) REG_READ(ah, AR_IER);
1973 if (!AR_SREV_9100(ah)) {
1974 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, 0);
1975 (void) REG_READ(ah, AR_INTR_ASYNC_ENABLE);
1977 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1978 (void) REG_READ(ah, AR_INTR_SYNC_ENABLE);
1982 mask = ints & ATH9K_INT_COMMON;
1985 if (ints & ATH9K_INT_TX) {
1986 if (ah->txok_interrupt_mask)
1987 mask |= AR_IMR_TXOK;
1988 if (ah->txdesc_interrupt_mask)
1989 mask |= AR_IMR_TXDESC;
1990 if (ah->txerr_interrupt_mask)
1991 mask |= AR_IMR_TXERR;
1992 if (ah->txeol_interrupt_mask)
1993 mask |= AR_IMR_TXEOL;
1995 if (ints & ATH9K_INT_RX) {
1996 mask |= AR_IMR_RXERR;
1997 if (ah->config.rx_intr_mitigation)
1998 mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
2000 mask |= AR_IMR_RXOK | AR_IMR_RXDESC;
2001 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
2002 mask |= AR_IMR_GENTMR;
2005 if (ints & (ATH9K_INT_BMISC)) {
2006 mask |= AR_IMR_BCNMISC;
2007 if (ints & ATH9K_INT_TIM)
2008 mask2 |= AR_IMR_S2_TIM;
2009 if (ints & ATH9K_INT_DTIM)
2010 mask2 |= AR_IMR_S2_DTIM;
2011 if (ints & ATH9K_INT_DTIMSYNC)
2012 mask2 |= AR_IMR_S2_DTIMSYNC;
2013 if (ints & ATH9K_INT_CABEND)
2014 mask2 |= AR_IMR_S2_CABEND;
2015 if (ints & ATH9K_INT_TSFOOR)
2016 mask2 |= AR_IMR_S2_TSFOOR;
2019 if (ints & (ATH9K_INT_GTT | ATH9K_INT_CST)) {
2020 mask |= AR_IMR_BCNMISC;
2021 if (ints & ATH9K_INT_GTT)
2022 mask2 |= AR_IMR_S2_GTT;
2023 if (ints & ATH9K_INT_CST)
2024 mask2 |= AR_IMR_S2_CST;
2027 ath_print(common, ATH_DBG_INTERRUPT, "new IMR 0x%x\n", mask);
2028 REG_WRITE(ah, AR_IMR, mask);
2029 ah->imrs2_reg &= ~(AR_IMR_S2_TIM | AR_IMR_S2_DTIM | AR_IMR_S2_DTIMSYNC |
2030 AR_IMR_S2_CABEND | AR_IMR_S2_CABTO |
2031 AR_IMR_S2_TSFOOR | AR_IMR_S2_GTT | AR_IMR_S2_CST);
2032 ah->imrs2_reg |= mask2;
2033 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
2035 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
2036 if (ints & ATH9K_INT_TIM_TIMER)
2037 REG_SET_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
2039 REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
2042 if (ints & ATH9K_INT_GLOBAL) {
2043 ath_print(common, ATH_DBG_INTERRUPT, "enable IER\n");
2044 REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
2045 if (!AR_SREV_9100(ah)) {
2046 REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
2048 REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
2051 REG_WRITE(ah, AR_INTR_SYNC_ENABLE,
2052 AR_INTR_SYNC_DEFAULT);
2053 REG_WRITE(ah, AR_INTR_SYNC_MASK,
2054 AR_INTR_SYNC_DEFAULT);
2056 ath_print(common, ATH_DBG_INTERRUPT, "AR_IMR 0x%x IER 0x%x\n",
2057 REG_READ(ah, AR_IMR), REG_READ(ah, AR_IER));
2062 EXPORT_SYMBOL(ath9k_hw_set_interrupts);
2064 /*******************/
2065 /* Beacon Handling */
2066 /*******************/
2068 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2072 ah->beacon_interval = beacon_period;
2074 switch (ah->opmode) {
2075 case NL80211_IFTYPE_STATION:
2076 case NL80211_IFTYPE_MONITOR:
2077 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(next_beacon));
2078 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, 0xffff);
2079 REG_WRITE(ah, AR_NEXT_SWBA, 0x7ffff);
2080 flags |= AR_TBTT_TIMER_EN;
2082 case NL80211_IFTYPE_ADHOC:
2083 case NL80211_IFTYPE_MESH_POINT:
2084 REG_SET_BIT(ah, AR_TXCFG,
2085 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2086 REG_WRITE(ah, AR_NEXT_NDP_TIMER,
2087 TU_TO_USEC(next_beacon +
2088 (ah->atim_window ? ah->
2090 flags |= AR_NDP_TIMER_EN;
2091 case NL80211_IFTYPE_AP:
2092 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(next_beacon));
2093 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT,
2094 TU_TO_USEC(next_beacon -
2096 dma_beacon_response_time));
2097 REG_WRITE(ah, AR_NEXT_SWBA,
2098 TU_TO_USEC(next_beacon -
2100 sw_beacon_response_time));
2102 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2105 ath_print(ath9k_hw_common(ah), ATH_DBG_BEACON,
2106 "%s: unsupported opmode: %d\n",
2107 __func__, ah->opmode);
2112 REG_WRITE(ah, AR_BEACON_PERIOD, TU_TO_USEC(beacon_period));
2113 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, TU_TO_USEC(beacon_period));
2114 REG_WRITE(ah, AR_SWBA_PERIOD, TU_TO_USEC(beacon_period));
2115 REG_WRITE(ah, AR_NDP_PERIOD, TU_TO_USEC(beacon_period));
2117 beacon_period &= ~ATH9K_BEACON_ENA;
2118 if (beacon_period & ATH9K_BEACON_RESET_TSF) {
2119 ath9k_hw_reset_tsf(ah);
2122 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2124 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2126 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2127 const struct ath9k_beacon_state *bs)
2129 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2130 struct ath9k_hw_capabilities *pCap = &ah->caps;
2131 struct ath_common *common = ath9k_hw_common(ah);
2133 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
2135 REG_WRITE(ah, AR_BEACON_PERIOD,
2136 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
2137 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
2138 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
2140 REG_RMW_FIELD(ah, AR_RSSI_THR,
2141 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2143 beaconintval = bs->bs_intval & ATH9K_BEACON_PERIOD;
2145 if (bs->bs_sleepduration > beaconintval)
2146 beaconintval = bs->bs_sleepduration;
2148 dtimperiod = bs->bs_dtimperiod;
2149 if (bs->bs_sleepduration > dtimperiod)
2150 dtimperiod = bs->bs_sleepduration;
2152 if (beaconintval == dtimperiod)
2153 nextTbtt = bs->bs_nextdtim;
2155 nextTbtt = bs->bs_nexttbtt;
2157 ath_print(common, ATH_DBG_BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2158 ath_print(common, ATH_DBG_BEACON, "next beacon %d\n", nextTbtt);
2159 ath_print(common, ATH_DBG_BEACON, "beacon period %d\n", beaconintval);
2160 ath_print(common, ATH_DBG_BEACON, "DTIM period %d\n", dtimperiod);
2162 REG_WRITE(ah, AR_NEXT_DTIM,
2163 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
2164 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
2166 REG_WRITE(ah, AR_SLEEP1,
2167 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2168 | AR_SLEEP1_ASSUME_DTIM);
2170 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2171 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2173 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2175 REG_WRITE(ah, AR_SLEEP2,
2176 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2178 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
2179 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
2181 REG_SET_BIT(ah, AR_TIMER_MODE,
2182 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2185 /* TSF Out of Range Threshold */
2186 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2188 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2190 /*******************/
2191 /* HW Capabilities */
2192 /*******************/
2194 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2196 struct ath9k_hw_capabilities *pCap = &ah->caps;
2197 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2198 struct ath_common *common = ath9k_hw_common(ah);
2199 struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
2201 u16 capField = 0, eeval;
2203 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2204 regulatory->current_rd = eeval;
2206 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_1);
2207 if (AR_SREV_9285_10_OR_LATER(ah))
2208 eeval |= AR9285_RDEXT_DEFAULT;
2209 regulatory->current_rd_ext = eeval;
2211 capField = ah->eep_ops->get_eeprom(ah, EEP_OP_CAP);
2213 if (ah->opmode != NL80211_IFTYPE_AP &&
2214 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2215 if (regulatory->current_rd == 0x64 ||
2216 regulatory->current_rd == 0x65)
2217 regulatory->current_rd += 5;
2218 else if (regulatory->current_rd == 0x41)
2219 regulatory->current_rd = 0x43;
2220 ath_print(common, ATH_DBG_REGULATORY,
2221 "regdomain mapped to 0x%x\n", regulatory->current_rd);
2224 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2225 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
2226 ath_print(common, ATH_DBG_FATAL,
2227 "no band has been marked as supported in EEPROM.\n");
2231 bitmap_zero(pCap->wireless_modes, ATH9K_MODE_MAX);
2233 if (eeval & AR5416_OPFLAGS_11A) {
2234 set_bit(ATH9K_MODE_11A, pCap->wireless_modes);
2235 if (ah->config.ht_enable) {
2236 if (!(eeval & AR5416_OPFLAGS_N_5G_HT20))
2237 set_bit(ATH9K_MODE_11NA_HT20,
2238 pCap->wireless_modes);
2239 if (!(eeval & AR5416_OPFLAGS_N_5G_HT40)) {
2240 set_bit(ATH9K_MODE_11NA_HT40PLUS,
2241 pCap->wireless_modes);
2242 set_bit(ATH9K_MODE_11NA_HT40MINUS,
2243 pCap->wireless_modes);
2248 if (eeval & AR5416_OPFLAGS_11G) {
2249 set_bit(ATH9K_MODE_11G, pCap->wireless_modes);
2250 if (ah->config.ht_enable) {
2251 if (!(eeval & AR5416_OPFLAGS_N_2G_HT20))
2252 set_bit(ATH9K_MODE_11NG_HT20,
2253 pCap->wireless_modes);
2254 if (!(eeval & AR5416_OPFLAGS_N_2G_HT40)) {
2255 set_bit(ATH9K_MODE_11NG_HT40PLUS,
2256 pCap->wireless_modes);
2257 set_bit(ATH9K_MODE_11NG_HT40MINUS,
2258 pCap->wireless_modes);
2263 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2265 * For AR9271 we will temporarilly uses the rx chainmax as read from
2268 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2269 !(eeval & AR5416_OPFLAGS_11A) &&
2270 !(AR_SREV_9271(ah)))
2271 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2272 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2274 /* Use rx_chainmask from EEPROM. */
2275 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2277 if (!(AR_SREV_9280(ah) && (ah->hw_version.macRev == 0)))
2278 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2280 pCap->low_2ghz_chan = 2312;
2281 pCap->high_2ghz_chan = 2732;
2283 pCap->low_5ghz_chan = 4920;
2284 pCap->high_5ghz_chan = 6100;
2286 pCap->hw_caps &= ~ATH9K_HW_CAP_CIPHER_CKIP;
2287 pCap->hw_caps |= ATH9K_HW_CAP_CIPHER_TKIP;
2288 pCap->hw_caps |= ATH9K_HW_CAP_CIPHER_AESCCM;
2290 pCap->hw_caps &= ~ATH9K_HW_CAP_MIC_CKIP;
2291 pCap->hw_caps |= ATH9K_HW_CAP_MIC_TKIP;
2292 pCap->hw_caps |= ATH9K_HW_CAP_MIC_AESCCM;
2294 if (ah->config.ht_enable)
2295 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2297 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2299 pCap->hw_caps |= ATH9K_HW_CAP_GTT;
2300 pCap->hw_caps |= ATH9K_HW_CAP_VEOL;
2301 pCap->hw_caps |= ATH9K_HW_CAP_BSSIDMASK;
2302 pCap->hw_caps &= ~ATH9K_HW_CAP_MCAST_KEYSEARCH;
2304 if (capField & AR_EEPROM_EEPCAP_MAXQCU)
2305 pCap->total_queues =
2306 MS(capField, AR_EEPROM_EEPCAP_MAXQCU);
2308 pCap->total_queues = ATH9K_NUM_TX_QUEUES;
2310 if (capField & AR_EEPROM_EEPCAP_KC_ENTRIES)
2311 pCap->keycache_size =
2312 1 << MS(capField, AR_EEPROM_EEPCAP_KC_ENTRIES);
2314 pCap->keycache_size = AR_KEYTABLE_SIZE;
2316 pCap->hw_caps |= ATH9K_HW_CAP_FASTCC;
2318 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
2319 pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD >> 1;
2321 pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD;
2323 if (AR_SREV_9271(ah))
2324 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2325 else if (AR_SREV_9285_10_OR_LATER(ah))
2326 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2327 else if (AR_SREV_9280_10_OR_LATER(ah))
2328 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2330 pCap->num_gpio_pins = AR_NUM_GPIO;
2332 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah)) {
2333 pCap->hw_caps |= ATH9K_HW_CAP_CST;
2334 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2336 pCap->rts_aggr_limit = (8 * 1024);
2339 pCap->hw_caps |= ATH9K_HW_CAP_ENHANCEDPM;
2341 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2342 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2343 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2345 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2346 ah->rfkill_polarity =
2347 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2349 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2352 if (AR_SREV_9271(ah))
2353 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2355 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2357 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2358 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2360 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2362 if (regulatory->current_rd_ext & (1 << REG_EXT_JAPAN_MIDBAND)) {
2364 AR_EEPROM_EEREGCAP_EN_KK_NEW_11A |
2365 AR_EEPROM_EEREGCAP_EN_KK_U1_EVEN |
2366 AR_EEPROM_EEREGCAP_EN_KK_U2 |
2367 AR_EEPROM_EEREGCAP_EN_KK_MIDBAND;
2370 AR_EEPROM_EEREGCAP_EN_KK_NEW_11A |
2371 AR_EEPROM_EEREGCAP_EN_KK_U1_EVEN;
2374 /* Advertise midband for AR5416 with FCC midband set in eeprom */
2375 if (regulatory->current_rd_ext & (1 << REG_EXT_FCC_MIDBAND) &&
2377 pCap->reg_cap |= AR_EEPROM_EEREGCAP_EN_FCC_MIDBAND;
2379 pCap->num_antcfg_5ghz =
2380 ah->eep_ops->get_num_ant_config(ah, ATH9K_HAL_FREQ_BAND_5GHZ);
2381 pCap->num_antcfg_2ghz =
2382 ah->eep_ops->get_num_ant_config(ah, ATH9K_HAL_FREQ_BAND_2GHZ);
2384 if (AR_SREV_9280_10_OR_LATER(ah) &&
2385 ath9k_hw_btcoex_supported(ah)) {
2386 btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO;
2387 btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO;
2389 if (AR_SREV_9285(ah)) {
2390 btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
2391 btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO;
2393 btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
2396 btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
2399 if (AR_SREV_9300_20_OR_LATER(ah)) {
2400 pCap->hw_caps |= ATH9K_HW_CAP_EDMA;
2401 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2402 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2403 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2404 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2406 pCap->tx_desc_len = sizeof(struct ath_desc);
2412 bool ath9k_hw_getcapability(struct ath_hw *ah, enum ath9k_capability_type type,
2413 u32 capability, u32 *result)
2415 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2417 case ATH9K_CAP_CIPHER:
2418 switch (capability) {
2419 case ATH9K_CIPHER_AES_CCM:
2420 case ATH9K_CIPHER_AES_OCB:
2421 case ATH9K_CIPHER_TKIP:
2422 case ATH9K_CIPHER_WEP:
2423 case ATH9K_CIPHER_MIC:
2424 case ATH9K_CIPHER_CLR:
2429 case ATH9K_CAP_TKIP_MIC:
2430 switch (capability) {
2434 return (ah->sta_id1_defaults &
2435 AR_STA_ID1_CRPT_MIC_ENABLE) ? true :
2438 case ATH9K_CAP_TKIP_SPLIT:
2439 return (ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA) ?
2441 case ATH9K_CAP_MCAST_KEYSRCH:
2442 switch (capability) {
2446 if (REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_ADHOC) {
2449 return (ah->sta_id1_defaults &
2450 AR_STA_ID1_MCAST_KSRCH) ? true :
2455 case ATH9K_CAP_TXPOW:
2456 switch (capability) {
2460 *result = regulatory->power_limit;
2463 *result = regulatory->max_power_level;
2466 *result = regulatory->tp_scale;
2471 return (AR_SREV_9280_20_OR_LATER(ah) &&
2472 (ah->eep_ops->get_eeprom(ah, EEP_RC_CHAIN_MASK) == 1))
2478 EXPORT_SYMBOL(ath9k_hw_getcapability);
2480 bool ath9k_hw_setcapability(struct ath_hw *ah, enum ath9k_capability_type type,
2481 u32 capability, u32 setting, int *status)
2484 case ATH9K_CAP_TKIP_MIC:
2486 ah->sta_id1_defaults |=
2487 AR_STA_ID1_CRPT_MIC_ENABLE;
2489 ah->sta_id1_defaults &=
2490 ~AR_STA_ID1_CRPT_MIC_ENABLE;
2492 case ATH9K_CAP_MCAST_KEYSRCH:
2494 ah->sta_id1_defaults |= AR_STA_ID1_MCAST_KSRCH;
2496 ah->sta_id1_defaults &= ~AR_STA_ID1_MCAST_KSRCH;
2502 EXPORT_SYMBOL(ath9k_hw_setcapability);
2504 /****************************/
2505 /* GPIO / RFKILL / Antennae */
2506 /****************************/
2508 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2512 u32 gpio_shift, tmp;
2515 addr = AR_GPIO_OUTPUT_MUX3;
2517 addr = AR_GPIO_OUTPUT_MUX2;
2519 addr = AR_GPIO_OUTPUT_MUX1;
2521 gpio_shift = (gpio % 6) * 5;
2523 if (AR_SREV_9280_20_OR_LATER(ah)
2524 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2525 REG_RMW(ah, addr, (type << gpio_shift),
2526 (0x1f << gpio_shift));
2528 tmp = REG_READ(ah, addr);
2529 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2530 tmp &= ~(0x1f << gpio_shift);
2531 tmp |= (type << gpio_shift);
2532 REG_WRITE(ah, addr, tmp);
2536 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2540 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2542 gpio_shift = gpio << 1;
2546 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2547 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2549 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2551 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2553 #define MS_REG_READ(x, y) \
2554 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2556 if (gpio >= ah->caps.num_gpio_pins)
2559 if (AR_SREV_9300_20_OR_LATER(ah))
2560 return MS_REG_READ(AR9300, gpio) != 0;
2561 else if (AR_SREV_9271(ah))
2562 return MS_REG_READ(AR9271, gpio) != 0;
2563 else if (AR_SREV_9287_10_OR_LATER(ah))
2564 return MS_REG_READ(AR9287, gpio) != 0;
2565 else if (AR_SREV_9285_10_OR_LATER(ah))
2566 return MS_REG_READ(AR9285, gpio) != 0;
2567 else if (AR_SREV_9280_10_OR_LATER(ah))
2568 return MS_REG_READ(AR928X, gpio) != 0;
2570 return MS_REG_READ(AR, gpio) != 0;
2572 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2574 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2579 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2581 gpio_shift = 2 * gpio;
2585 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2586 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2588 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2590 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2592 if (AR_SREV_9271(ah))
2595 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2598 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2600 u32 ath9k_hw_getdefantenna(struct ath_hw *ah)
2602 return REG_READ(ah, AR_DEF_ANTENNA) & 0x7;
2604 EXPORT_SYMBOL(ath9k_hw_getdefantenna);
2606 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2608 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2610 EXPORT_SYMBOL(ath9k_hw_setantenna);
2612 /*********************/
2613 /* General Operation */
2614 /*********************/
2616 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2618 u32 bits = REG_READ(ah, AR_RX_FILTER);
2619 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2621 if (phybits & AR_PHY_ERR_RADAR)
2622 bits |= ATH9K_RX_FILTER_PHYRADAR;
2623 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2624 bits |= ATH9K_RX_FILTER_PHYERR;
2628 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2630 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2634 REG_WRITE(ah, AR_RX_FILTER, bits);
2637 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2638 phybits |= AR_PHY_ERR_RADAR;
2639 if (bits & ATH9K_RX_FILTER_PHYERR)
2640 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2641 REG_WRITE(ah, AR_PHY_ERR, phybits);
2644 REG_WRITE(ah, AR_RXCFG,
2645 REG_READ(ah, AR_RXCFG) | AR_RXCFG_ZLFDMA);
2647 REG_WRITE(ah, AR_RXCFG,
2648 REG_READ(ah, AR_RXCFG) & ~AR_RXCFG_ZLFDMA);
2650 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2652 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2654 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2657 ath9k_hw_init_pll(ah, NULL);
2660 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2662 bool ath9k_hw_disable(struct ath_hw *ah)
2664 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2667 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2670 ath9k_hw_init_pll(ah, NULL);
2673 EXPORT_SYMBOL(ath9k_hw_disable);
2675 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit)
2677 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2678 struct ath9k_channel *chan = ah->curchan;
2679 struct ieee80211_channel *channel = chan->chan;
2681 regulatory->power_limit = min(limit, (u32) MAX_RATE_POWER);
2683 ah->eep_ops->set_txpower(ah, chan,
2684 ath9k_regd_get_ctl(regulatory, chan),
2685 channel->max_antenna_gain * 2,
2686 channel->max_power * 2,
2687 min((u32) MAX_RATE_POWER,
2688 (u32) regulatory->power_limit));
2690 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2692 void ath9k_hw_setmac(struct ath_hw *ah, const u8 *mac)
2694 memcpy(ath9k_hw_common(ah)->macaddr, mac, ETH_ALEN);
2696 EXPORT_SYMBOL(ath9k_hw_setmac);
2698 void ath9k_hw_setopmode(struct ath_hw *ah)
2700 ath9k_hw_set_operating_mode(ah, ah->opmode);
2702 EXPORT_SYMBOL(ath9k_hw_setopmode);
2704 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2706 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2707 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2709 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2711 void ath9k_hw_write_associd(struct ath_hw *ah)
2713 struct ath_common *common = ath9k_hw_common(ah);
2715 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2716 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2717 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2719 EXPORT_SYMBOL(ath9k_hw_write_associd);
2721 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2725 tsf = REG_READ(ah, AR_TSF_U32);
2726 tsf = (tsf << 32) | REG_READ(ah, AR_TSF_L32);
2730 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2732 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2734 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2735 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2737 EXPORT_SYMBOL(ath9k_hw_settsf64);
2739 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2741 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2742 AH_TSF_WRITE_TIMEOUT))
2743 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
2744 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2746 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2748 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2750 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)
2753 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2755 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2757 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2760 * Extend 15-bit time stamp from rx descriptor to
2761 * a full 64-bit TSF using the current h/w TSF.
2763 u64 ath9k_hw_extend_tsf(struct ath_hw *ah, u32 rstamp)
2767 tsf = ath9k_hw_gettsf64(ah);
2768 if ((tsf & 0x7fff) < rstamp)
2770 return (tsf & ~0x7fff) | rstamp;
2772 EXPORT_SYMBOL(ath9k_hw_extend_tsf);
2774 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2776 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2779 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2780 macmode = AR_2040_JOINED_RX_CLEAR;
2784 REG_WRITE(ah, AR_2040_MODE, macmode);
2787 /* HW Generic timers configuration */
2789 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2791 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2792 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2793 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2794 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2795 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2796 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2797 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2798 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2799 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2800 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2801 AR_NDP2_TIMER_MODE, 0x0002},
2802 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2803 AR_NDP2_TIMER_MODE, 0x0004},
2804 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2805 AR_NDP2_TIMER_MODE, 0x0008},
2806 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2807 AR_NDP2_TIMER_MODE, 0x0010},
2808 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2809 AR_NDP2_TIMER_MODE, 0x0020},
2810 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2811 AR_NDP2_TIMER_MODE, 0x0040},
2812 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2813 AR_NDP2_TIMER_MODE, 0x0080}
2816 /* HW generic timer primitives */
2818 /* compute and clear index of rightmost 1 */
2819 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2829 return timer_table->gen_timer_index[b];
2832 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2834 return REG_READ(ah, AR_TSF_L32);
2836 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2838 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2839 void (*trigger)(void *),
2840 void (*overflow)(void *),
2844 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2845 struct ath_gen_timer *timer;
2847 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2849 if (timer == NULL) {
2850 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
2851 "Failed to allocate memory"
2852 "for hw timer[%d]\n", timer_index);
2856 /* allocate a hardware generic timer slot */
2857 timer_table->timers[timer_index] = timer;
2858 timer->index = timer_index;
2859 timer->trigger = trigger;
2860 timer->overflow = overflow;
2865 EXPORT_SYMBOL(ath_gen_timer_alloc);
2867 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2868 struct ath_gen_timer *timer,
2872 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2875 BUG_ON(!timer_period);
2877 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
2879 tsf = ath9k_hw_gettsf32(ah);
2881 ath_print(ath9k_hw_common(ah), ATH_DBG_HWTIMER,
2882 "curent tsf %x period %x"
2883 "timer_next %x\n", tsf, timer_period, timer_next);
2886 * Pull timer_next forward if the current TSF already passed it
2887 * because of software latency
2889 if (timer_next < tsf)
2890 timer_next = tsf + timer_period;
2893 * Program generic timer registers
2895 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
2897 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
2899 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2900 gen_tmr_configuration[timer->index].mode_mask);
2902 /* Enable both trigger and thresh interrupt masks */
2903 REG_SET_BIT(ah, AR_IMR_S5,
2904 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2905 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2907 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
2909 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
2911 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2913 if ((timer->index < AR_FIRST_NDP_TIMER) ||
2914 (timer->index >= ATH_MAX_GEN_TIMER)) {
2918 /* Clear generic timer enable bits. */
2919 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2920 gen_tmr_configuration[timer->index].mode_mask);
2922 /* Disable both trigger and thresh interrupt masks */
2923 REG_CLR_BIT(ah, AR_IMR_S5,
2924 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2925 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2927 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
2929 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
2931 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
2933 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2935 /* free the hardware generic timer slot */
2936 timer_table->timers[timer->index] = NULL;
2939 EXPORT_SYMBOL(ath_gen_timer_free);
2942 * Generic Timer Interrupts handling
2944 void ath_gen_timer_isr(struct ath_hw *ah)
2946 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2947 struct ath_gen_timer *timer;
2948 struct ath_common *common = ath9k_hw_common(ah);
2949 u32 trigger_mask, thresh_mask, index;
2951 /* get hardware generic timer interrupt status */
2952 trigger_mask = ah->intr_gen_timer_trigger;
2953 thresh_mask = ah->intr_gen_timer_thresh;
2954 trigger_mask &= timer_table->timer_mask.val;
2955 thresh_mask &= timer_table->timer_mask.val;
2957 trigger_mask &= ~thresh_mask;
2959 while (thresh_mask) {
2960 index = rightmost_index(timer_table, &thresh_mask);
2961 timer = timer_table->timers[index];
2963 ath_print(common, ATH_DBG_HWTIMER,
2964 "TSF overflow for Gen timer %d\n", index);
2965 timer->overflow(timer->arg);
2968 while (trigger_mask) {
2969 index = rightmost_index(timer_table, &trigger_mask);
2970 timer = timer_table->timers[index];
2972 ath_print(common, ATH_DBG_HWTIMER,
2973 "Gen timer[%d] trigger\n", index);
2974 timer->trigger(timer->arg);
2977 EXPORT_SYMBOL(ath_gen_timer_isr);
2983 void ath9k_hw_htc_resetinit(struct ath_hw *ah)
2985 ah->htc_reset_init = true;
2987 EXPORT_SYMBOL(ath9k_hw_htc_resetinit);
2992 } ath_mac_bb_names[] = {
2993 /* Devices with external radios */
2994 { AR_SREV_VERSION_5416_PCI, "5416" },
2995 { AR_SREV_VERSION_5416_PCIE, "5418" },
2996 { AR_SREV_VERSION_9100, "9100" },
2997 { AR_SREV_VERSION_9160, "9160" },
2998 /* Single-chip solutions */
2999 { AR_SREV_VERSION_9280, "9280" },
3000 { AR_SREV_VERSION_9285, "9285" },
3001 { AR_SREV_VERSION_9287, "9287" },
3002 { AR_SREV_VERSION_9271, "9271" },
3005 /* For devices with external radios */
3009 } ath_rf_names[] = {
3011 { AR_RAD5133_SREV_MAJOR, "5133" },
3012 { AR_RAD5122_SREV_MAJOR, "5122" },
3013 { AR_RAD2133_SREV_MAJOR, "2133" },
3014 { AR_RAD2122_SREV_MAJOR, "2122" }
3018 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3020 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3024 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3025 if (ath_mac_bb_names[i].version == mac_bb_version) {
3026 return ath_mac_bb_names[i].name;
3034 * Return the RF name. "????" is returned if the RF is unknown.
3035 * Used for devices with external radios.
3037 static const char *ath9k_hw_rf_name(u16 rf_version)
3041 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3042 if (ath_rf_names[i].version == rf_version) {
3043 return ath_rf_names[i].name;
3050 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3054 /* chipsets >= AR9280 are single-chip */
3055 if (AR_SREV_9280_10_OR_LATER(ah)) {
3056 used = snprintf(hw_name, len,
3057 "Atheros AR%s Rev:%x",
3058 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3059 ah->hw_version.macRev);
3062 used = snprintf(hw_name, len,
3063 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3064 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3065 ah->hw_version.macRev,
3066 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
3067 AR_RADIO_SREV_MAJOR)),
3068 ah->hw_version.phyRev);
3071 hw_name[used] = '\0';
3073 EXPORT_SYMBOL(ath9k_hw_name);