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.
18 #include <linux/slab.h>
19 #include <linux/module.h>
20 #include <asm/unaligned.h>
25 #include "ar9003_mac.h"
26 #include "ar9003_mci.h"
27 #include "ar9003_phy.h"
31 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
33 MODULE_AUTHOR("Atheros Communications");
34 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
35 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
36 MODULE_LICENSE("Dual BSD/GPL");
38 static int __init ath9k_init(void)
42 module_init(ath9k_init);
44 static void __exit ath9k_exit(void)
48 module_exit(ath9k_exit);
50 /* Private hardware callbacks */
52 static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
54 ath9k_hw_private_ops(ah)->init_cal_settings(ah);
57 static void ath9k_hw_init_mode_regs(struct ath_hw *ah)
59 ath9k_hw_private_ops(ah)->init_mode_regs(ah);
62 static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
63 struct ath9k_channel *chan)
65 return ath9k_hw_private_ops(ah)->compute_pll_control(ah, chan);
68 static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah)
70 if (!ath9k_hw_private_ops(ah)->init_mode_gain_regs)
73 ath9k_hw_private_ops(ah)->init_mode_gain_regs(ah);
76 static void ath9k_hw_ani_cache_ini_regs(struct ath_hw *ah)
78 /* You will not have this callback if using the old ANI */
79 if (!ath9k_hw_private_ops(ah)->ani_cache_ini_regs)
82 ath9k_hw_private_ops(ah)->ani_cache_ini_regs(ah);
85 /********************/
86 /* Helper Functions */
87 /********************/
89 #ifdef CONFIG_ATH9K_DEBUGFS
91 void ath9k_debug_sync_cause(struct ath_common *common, u32 sync_cause)
93 struct ath_softc *sc = common->priv;
95 sc->debug.stats.istats.sync_cause_all++;
96 if (sync_cause & AR_INTR_SYNC_RTC_IRQ)
97 sc->debug.stats.istats.sync_rtc_irq++;
98 if (sync_cause & AR_INTR_SYNC_MAC_IRQ)
99 sc->debug.stats.istats.sync_mac_irq++;
100 if (sync_cause & AR_INTR_SYNC_EEPROM_ILLEGAL_ACCESS)
101 sc->debug.stats.istats.eeprom_illegal_access++;
102 if (sync_cause & AR_INTR_SYNC_APB_TIMEOUT)
103 sc->debug.stats.istats.apb_timeout++;
104 if (sync_cause & AR_INTR_SYNC_PCI_MODE_CONFLICT)
105 sc->debug.stats.istats.pci_mode_conflict++;
106 if (sync_cause & AR_INTR_SYNC_HOST1_FATAL)
107 sc->debug.stats.istats.host1_fatal++;
108 if (sync_cause & AR_INTR_SYNC_HOST1_PERR)
109 sc->debug.stats.istats.host1_perr++;
110 if (sync_cause & AR_INTR_SYNC_TRCV_FIFO_PERR)
111 sc->debug.stats.istats.trcv_fifo_perr++;
112 if (sync_cause & AR_INTR_SYNC_RADM_CPL_EP)
113 sc->debug.stats.istats.radm_cpl_ep++;
114 if (sync_cause & AR_INTR_SYNC_RADM_CPL_DLLP_ABORT)
115 sc->debug.stats.istats.radm_cpl_dllp_abort++;
116 if (sync_cause & AR_INTR_SYNC_RADM_CPL_TLP_ABORT)
117 sc->debug.stats.istats.radm_cpl_tlp_abort++;
118 if (sync_cause & AR_INTR_SYNC_RADM_CPL_ECRC_ERR)
119 sc->debug.stats.istats.radm_cpl_ecrc_err++;
120 if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT)
121 sc->debug.stats.istats.radm_cpl_timeout++;
122 if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT)
123 sc->debug.stats.istats.local_timeout++;
124 if (sync_cause & AR_INTR_SYNC_PM_ACCESS)
125 sc->debug.stats.istats.pm_access++;
126 if (sync_cause & AR_INTR_SYNC_MAC_AWAKE)
127 sc->debug.stats.istats.mac_awake++;
128 if (sync_cause & AR_INTR_SYNC_MAC_ASLEEP)
129 sc->debug.stats.istats.mac_asleep++;
130 if (sync_cause & AR_INTR_SYNC_MAC_SLEEP_ACCESS)
131 sc->debug.stats.istats.mac_sleep_access++;
136 static void ath9k_hw_set_clockrate(struct ath_hw *ah)
138 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
139 struct ath_common *common = ath9k_hw_common(ah);
140 unsigned int clockrate;
142 /* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
143 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
145 else if (!ah->curchan) /* should really check for CCK instead */
146 clockrate = ATH9K_CLOCK_RATE_CCK;
147 else if (conf->channel->band == IEEE80211_BAND_2GHZ)
148 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
149 else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
150 clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
152 clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
154 if (conf_is_ht40(conf))
158 if (IS_CHAN_HALF_RATE(ah->curchan))
160 if (IS_CHAN_QUARTER_RATE(ah->curchan))
164 common->clockrate = clockrate;
167 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
169 struct ath_common *common = ath9k_hw_common(ah);
171 return usecs * common->clockrate;
174 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
178 BUG_ON(timeout < AH_TIME_QUANTUM);
180 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
181 if ((REG_READ(ah, reg) & mask) == val)
184 udelay(AH_TIME_QUANTUM);
187 ath_dbg(ath9k_hw_common(ah), ANY,
188 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
189 timeout, reg, REG_READ(ah, reg), mask, val);
193 EXPORT_SYMBOL(ath9k_hw_wait);
195 void ath9k_hw_synth_delay(struct ath_hw *ah, struct ath9k_channel *chan,
199 hw_delay = (4 * hw_delay) / 22;
203 if (IS_CHAN_HALF_RATE(chan))
205 else if (IS_CHAN_QUARTER_RATE(chan))
208 udelay(hw_delay + BASE_ACTIVATE_DELAY);
211 void ath9k_hw_write_array(struct ath_hw *ah, struct ar5416IniArray *array,
212 int column, unsigned int *writecnt)
216 ENABLE_REGWRITE_BUFFER(ah);
217 for (r = 0; r < array->ia_rows; r++) {
218 REG_WRITE(ah, INI_RA(array, r, 0),
219 INI_RA(array, r, column));
222 REGWRITE_BUFFER_FLUSH(ah);
225 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
230 for (i = 0, retval = 0; i < n; i++) {
231 retval = (retval << 1) | (val & 1);
237 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
239 u32 frameLen, u16 rateix,
242 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
248 case WLAN_RC_PHY_CCK:
249 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
252 numBits = frameLen << 3;
253 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
255 case WLAN_RC_PHY_OFDM:
256 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
257 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
258 numBits = OFDM_PLCP_BITS + (frameLen << 3);
259 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
260 txTime = OFDM_SIFS_TIME_QUARTER
261 + OFDM_PREAMBLE_TIME_QUARTER
262 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
263 } else if (ah->curchan &&
264 IS_CHAN_HALF_RATE(ah->curchan)) {
265 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
266 numBits = OFDM_PLCP_BITS + (frameLen << 3);
267 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
268 txTime = OFDM_SIFS_TIME_HALF +
269 OFDM_PREAMBLE_TIME_HALF
270 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
272 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
273 numBits = OFDM_PLCP_BITS + (frameLen << 3);
274 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
275 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
276 + (numSymbols * OFDM_SYMBOL_TIME);
280 ath_err(ath9k_hw_common(ah),
281 "Unknown phy %u (rate ix %u)\n", phy, rateix);
288 EXPORT_SYMBOL(ath9k_hw_computetxtime);
290 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
291 struct ath9k_channel *chan,
292 struct chan_centers *centers)
296 if (!IS_CHAN_HT40(chan)) {
297 centers->ctl_center = centers->ext_center =
298 centers->synth_center = chan->channel;
302 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
303 (chan->chanmode == CHANNEL_G_HT40PLUS)) {
304 centers->synth_center =
305 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
308 centers->synth_center =
309 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
313 centers->ctl_center =
314 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
315 /* 25 MHz spacing is supported by hw but not on upper layers */
316 centers->ext_center =
317 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
324 static void ath9k_hw_read_revisions(struct ath_hw *ah)
328 switch (ah->hw_version.devid) {
329 case AR5416_AR9100_DEVID:
330 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
332 case AR9300_DEVID_AR9330:
333 ah->hw_version.macVersion = AR_SREV_VERSION_9330;
334 if (ah->get_mac_revision) {
335 ah->hw_version.macRev = ah->get_mac_revision();
337 val = REG_READ(ah, AR_SREV);
338 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
341 case AR9300_DEVID_AR9340:
342 ah->hw_version.macVersion = AR_SREV_VERSION_9340;
343 val = REG_READ(ah, AR_SREV);
344 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
346 case AR9300_DEVID_QCA955X:
347 ah->hw_version.macVersion = AR_SREV_VERSION_9550;
351 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
354 val = REG_READ(ah, AR_SREV);
355 ah->hw_version.macVersion =
356 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
357 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
359 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
360 ah->is_pciexpress = true;
362 ah->is_pciexpress = (val &
363 AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
365 if (!AR_SREV_9100(ah))
366 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
368 ah->hw_version.macRev = val & AR_SREV_REVISION;
370 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
371 ah->is_pciexpress = true;
375 /************************************/
376 /* HW Attach, Detach, Init Routines */
377 /************************************/
379 static void ath9k_hw_disablepcie(struct ath_hw *ah)
381 if (!AR_SREV_5416(ah))
384 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
385 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
386 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
387 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
388 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
389 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
390 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
391 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
392 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
394 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
397 /* This should work for all families including legacy */
398 static bool ath9k_hw_chip_test(struct ath_hw *ah)
400 struct ath_common *common = ath9k_hw_common(ah);
401 u32 regAddr[2] = { AR_STA_ID0 };
403 static const u32 patternData[4] = {
404 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
408 if (!AR_SREV_9300_20_OR_LATER(ah)) {
410 regAddr[1] = AR_PHY_BASE + (8 << 2);
414 for (i = 0; i < loop_max; i++) {
415 u32 addr = regAddr[i];
418 regHold[i] = REG_READ(ah, addr);
419 for (j = 0; j < 0x100; j++) {
420 wrData = (j << 16) | j;
421 REG_WRITE(ah, addr, wrData);
422 rdData = REG_READ(ah, addr);
423 if (rdData != wrData) {
425 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
426 addr, wrData, rdData);
430 for (j = 0; j < 4; j++) {
431 wrData = patternData[j];
432 REG_WRITE(ah, addr, wrData);
433 rdData = REG_READ(ah, addr);
434 if (wrData != rdData) {
436 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
437 addr, wrData, rdData);
441 REG_WRITE(ah, regAddr[i], regHold[i]);
448 static void ath9k_hw_init_config(struct ath_hw *ah)
452 ah->config.dma_beacon_response_time = 1;
453 ah->config.sw_beacon_response_time = 6;
454 ah->config.additional_swba_backoff = 0;
455 ah->config.ack_6mb = 0x0;
456 ah->config.cwm_ignore_extcca = 0;
457 ah->config.pcie_clock_req = 0;
458 ah->config.pcie_waen = 0;
459 ah->config.analog_shiftreg = 1;
460 ah->config.enable_ani = true;
462 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
463 ah->config.spurchans[i][0] = AR_NO_SPUR;
464 ah->config.spurchans[i][1] = AR_NO_SPUR;
467 ah->config.rx_intr_mitigation = true;
468 ah->config.pcieSerDesWrite = true;
471 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
472 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
473 * This means we use it for all AR5416 devices, and the few
474 * minor PCI AR9280 devices out there.
476 * Serialization is required because these devices do not handle
477 * well the case of two concurrent reads/writes due to the latency
478 * involved. During one read/write another read/write can be issued
479 * on another CPU while the previous read/write may still be working
480 * on our hardware, if we hit this case the hardware poops in a loop.
481 * We prevent this by serializing reads and writes.
483 * This issue is not present on PCI-Express devices or pre-AR5416
484 * devices (legacy, 802.11abg).
486 if (num_possible_cpus() > 1)
487 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
490 static void ath9k_hw_init_defaults(struct ath_hw *ah)
492 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
494 regulatory->country_code = CTRY_DEFAULT;
495 regulatory->power_limit = MAX_RATE_POWER;
497 ah->hw_version.magic = AR5416_MAGIC;
498 ah->hw_version.subvendorid = 0;
501 ah->sta_id1_defaults =
502 AR_STA_ID1_CRPT_MIC_ENABLE |
503 AR_STA_ID1_MCAST_KSRCH;
504 if (AR_SREV_9100(ah))
505 ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
506 ah->slottime = ATH9K_SLOT_TIME_9;
507 ah->globaltxtimeout = (u32) -1;
508 ah->power_mode = ATH9K_PM_UNDEFINED;
509 ah->htc_reset_init = true;
512 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
514 struct ath_common *common = ath9k_hw_common(ah);
518 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
521 for (i = 0; i < 3; i++) {
522 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
524 common->macaddr[2 * i] = eeval >> 8;
525 common->macaddr[2 * i + 1] = eeval & 0xff;
527 if (sum == 0 || sum == 0xffff * 3)
528 return -EADDRNOTAVAIL;
533 static int ath9k_hw_post_init(struct ath_hw *ah)
535 struct ath_common *common = ath9k_hw_common(ah);
538 if (common->bus_ops->ath_bus_type != ATH_USB) {
539 if (!ath9k_hw_chip_test(ah))
543 if (!AR_SREV_9300_20_OR_LATER(ah)) {
544 ecode = ar9002_hw_rf_claim(ah);
549 ecode = ath9k_hw_eeprom_init(ah);
553 ath_dbg(ath9k_hw_common(ah), CONFIG, "Eeprom VER: %d, REV: %d\n",
554 ah->eep_ops->get_eeprom_ver(ah),
555 ah->eep_ops->get_eeprom_rev(ah));
557 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
559 ath_err(ath9k_hw_common(ah),
560 "Failed allocating banks for external radio\n");
561 ath9k_hw_rf_free_ext_banks(ah);
565 if (ah->config.enable_ani) {
566 ath9k_hw_ani_setup(ah);
567 ath9k_hw_ani_init(ah);
573 static void ath9k_hw_attach_ops(struct ath_hw *ah)
575 if (AR_SREV_9300_20_OR_LATER(ah))
576 ar9003_hw_attach_ops(ah);
578 ar9002_hw_attach_ops(ah);
581 /* Called for all hardware families */
582 static int __ath9k_hw_init(struct ath_hw *ah)
584 struct ath_common *common = ath9k_hw_common(ah);
587 ath9k_hw_read_revisions(ah);
590 * Read back AR_WA into a permanent copy and set bits 14 and 17.
591 * We need to do this to avoid RMW of this register. We cannot
592 * read the reg when chip is asleep.
594 ah->WARegVal = REG_READ(ah, AR_WA);
595 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
596 AR_WA_ASPM_TIMER_BASED_DISABLE);
598 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
599 ath_err(common, "Couldn't reset chip\n");
603 if (AR_SREV_9462(ah))
604 ah->WARegVal &= ~AR_WA_D3_L1_DISABLE;
606 if (AR_SREV_9565(ah)) {
607 ah->WARegVal |= AR_WA_BIT22;
608 REG_WRITE(ah, AR_WA, ah->WARegVal);
611 ath9k_hw_init_defaults(ah);
612 ath9k_hw_init_config(ah);
614 ath9k_hw_attach_ops(ah);
616 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
617 ath_err(common, "Couldn't wakeup chip\n");
621 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
622 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
623 ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
624 !ah->is_pciexpress)) {
625 ah->config.serialize_regmode =
628 ah->config.serialize_regmode =
633 ath_dbg(common, RESET, "serialize_regmode is %d\n",
634 ah->config.serialize_regmode);
636 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
637 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
639 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
641 switch (ah->hw_version.macVersion) {
642 case AR_SREV_VERSION_5416_PCI:
643 case AR_SREV_VERSION_5416_PCIE:
644 case AR_SREV_VERSION_9160:
645 case AR_SREV_VERSION_9100:
646 case AR_SREV_VERSION_9280:
647 case AR_SREV_VERSION_9285:
648 case AR_SREV_VERSION_9287:
649 case AR_SREV_VERSION_9271:
650 case AR_SREV_VERSION_9300:
651 case AR_SREV_VERSION_9330:
652 case AR_SREV_VERSION_9485:
653 case AR_SREV_VERSION_9340:
654 case AR_SREV_VERSION_9462:
655 case AR_SREV_VERSION_9550:
656 case AR_SREV_VERSION_9565:
660 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
661 ah->hw_version.macVersion, ah->hw_version.macRev);
665 if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
666 AR_SREV_9330(ah) || AR_SREV_9550(ah))
667 ah->is_pciexpress = false;
669 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
670 ath9k_hw_init_cal_settings(ah);
672 ah->ani_function = ATH9K_ANI_ALL;
673 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
674 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
675 if (!AR_SREV_9300_20_OR_LATER(ah))
676 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
678 ath9k_hw_init_mode_regs(ah);
680 if (!ah->is_pciexpress)
681 ath9k_hw_disablepcie(ah);
683 r = ath9k_hw_post_init(ah);
687 ath9k_hw_init_mode_gain_regs(ah);
688 r = ath9k_hw_fill_cap_info(ah);
692 r = ath9k_hw_init_macaddr(ah);
694 ath_err(common, "Failed to initialize MAC address\n");
698 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
699 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
701 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
703 if (AR_SREV_9330(ah))
704 ah->bb_watchdog_timeout_ms = 85;
706 ah->bb_watchdog_timeout_ms = 25;
708 common->state = ATH_HW_INITIALIZED;
713 int ath9k_hw_init(struct ath_hw *ah)
716 struct ath_common *common = ath9k_hw_common(ah);
718 /* These are all the AR5008/AR9001/AR9002/AR9003 hardware family of chipsets */
719 switch (ah->hw_version.devid) {
720 case AR5416_DEVID_PCI:
721 case AR5416_DEVID_PCIE:
722 case AR5416_AR9100_DEVID:
723 case AR9160_DEVID_PCI:
724 case AR9280_DEVID_PCI:
725 case AR9280_DEVID_PCIE:
726 case AR9285_DEVID_PCIE:
727 case AR9287_DEVID_PCI:
728 case AR9287_DEVID_PCIE:
729 case AR2427_DEVID_PCIE:
730 case AR9300_DEVID_PCIE:
731 case AR9300_DEVID_AR9485_PCIE:
732 case AR9300_DEVID_AR9330:
733 case AR9300_DEVID_AR9340:
734 case AR9300_DEVID_QCA955X:
735 case AR9300_DEVID_AR9580:
736 case AR9300_DEVID_AR9462:
737 case AR9485_DEVID_AR1111:
738 case AR9300_DEVID_AR9565:
741 if (common->bus_ops->ath_bus_type == ATH_USB)
743 ath_err(common, "Hardware device ID 0x%04x not supported\n",
744 ah->hw_version.devid);
748 ret = __ath9k_hw_init(ah);
751 "Unable to initialize hardware; initialization status: %d\n",
758 EXPORT_SYMBOL(ath9k_hw_init);
760 static void ath9k_hw_init_qos(struct ath_hw *ah)
762 ENABLE_REGWRITE_BUFFER(ah);
764 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
765 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
767 REG_WRITE(ah, AR_QOS_NO_ACK,
768 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
769 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
770 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
772 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
773 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
774 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
775 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
776 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
778 REGWRITE_BUFFER_FLUSH(ah);
781 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
783 struct ath_common *common = ath9k_hw_common(ah);
786 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
788 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
790 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
794 if (WARN_ON_ONCE(i >= 100)) {
795 ath_err(common, "PLL4 meaurement not done\n");
802 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
804 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
806 static void ath9k_hw_init_pll(struct ath_hw *ah,
807 struct ath9k_channel *chan)
811 if (AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
812 /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
813 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
814 AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
815 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
816 AR_CH0_DPLL2_KD, 0x40);
817 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
818 AR_CH0_DPLL2_KI, 0x4);
820 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
821 AR_CH0_BB_DPLL1_REFDIV, 0x5);
822 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
823 AR_CH0_BB_DPLL1_NINI, 0x58);
824 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
825 AR_CH0_BB_DPLL1_NFRAC, 0x0);
827 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
828 AR_CH0_BB_DPLL2_OUTDIV, 0x1);
829 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
830 AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
831 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
832 AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
834 /* program BB PLL phase_shift to 0x6 */
835 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
836 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
838 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
839 AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
841 } else if (AR_SREV_9330(ah)) {
842 u32 ddr_dpll2, pll_control2, kd;
844 if (ah->is_clk_25mhz) {
845 ddr_dpll2 = 0x18e82f01;
846 pll_control2 = 0xe04a3d;
849 ddr_dpll2 = 0x19e82f01;
850 pll_control2 = 0x886666;
854 /* program DDR PLL ki and kd value */
855 REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
857 /* program DDR PLL phase_shift */
858 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
859 AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
861 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
864 /* program refdiv, nint, frac to RTC register */
865 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
867 /* program BB PLL kd and ki value */
868 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
869 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
871 /* program BB PLL phase_shift */
872 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
873 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
874 } else if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
875 u32 regval, pll2_divint, pll2_divfrac, refdiv;
877 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
880 REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
883 if (ah->is_clk_25mhz) {
885 pll2_divfrac = 0x1eb85;
888 if (AR_SREV_9340(ah)) {
894 pll2_divfrac = 0x26666;
899 regval = REG_READ(ah, AR_PHY_PLL_MODE);
900 regval |= (0x1 << 16);
901 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
904 REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
905 (pll2_divint << 18) | pll2_divfrac);
908 regval = REG_READ(ah, AR_PHY_PLL_MODE);
909 if (AR_SREV_9340(ah))
910 regval = (regval & 0x80071fff) | (0x1 << 30) |
911 (0x1 << 13) | (0x4 << 26) | (0x18 << 19);
913 regval = (regval & 0x80071fff) | (0x3 << 30) |
914 (0x1 << 13) | (0x4 << 26) | (0x60 << 19);
915 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
916 REG_WRITE(ah, AR_PHY_PLL_MODE,
917 REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
921 pll = ath9k_hw_compute_pll_control(ah, chan);
922 if (AR_SREV_9565(ah))
924 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
926 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
930 /* Switch the core clock for ar9271 to 117Mhz */
931 if (AR_SREV_9271(ah)) {
933 REG_WRITE(ah, 0x50040, 0x304);
936 udelay(RTC_PLL_SETTLE_DELAY);
938 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
940 if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
941 if (ah->is_clk_25mhz) {
942 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
943 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
944 REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
946 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
947 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
948 REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
954 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
955 enum nl80211_iftype opmode)
957 u32 sync_default = AR_INTR_SYNC_DEFAULT;
958 u32 imr_reg = AR_IMR_TXERR |
964 if (AR_SREV_9340(ah) || AR_SREV_9550(ah))
965 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
967 if (AR_SREV_9300_20_OR_LATER(ah)) {
968 imr_reg |= AR_IMR_RXOK_HP;
969 if (ah->config.rx_intr_mitigation)
970 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
972 imr_reg |= AR_IMR_RXOK_LP;
975 if (ah->config.rx_intr_mitigation)
976 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
978 imr_reg |= AR_IMR_RXOK;
981 if (ah->config.tx_intr_mitigation)
982 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
984 imr_reg |= AR_IMR_TXOK;
986 ENABLE_REGWRITE_BUFFER(ah);
988 REG_WRITE(ah, AR_IMR, imr_reg);
989 ah->imrs2_reg |= AR_IMR_S2_GTT;
990 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
992 if (!AR_SREV_9100(ah)) {
993 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
994 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
995 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
998 REGWRITE_BUFFER_FLUSH(ah);
1000 if (AR_SREV_9300_20_OR_LATER(ah)) {
1001 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
1002 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
1003 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
1004 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
1008 static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
1010 u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
1011 val = min(val, (u32) 0xFFFF);
1012 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
1015 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
1017 u32 val = ath9k_hw_mac_to_clks(ah, us);
1018 val = min(val, (u32) 0xFFFF);
1019 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
1022 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
1024 u32 val = ath9k_hw_mac_to_clks(ah, us);
1025 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
1026 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
1029 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
1031 u32 val = ath9k_hw_mac_to_clks(ah, us);
1032 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
1033 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
1036 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
1039 ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
1041 ah->globaltxtimeout = (u32) -1;
1044 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
1045 ah->globaltxtimeout = tu;
1050 void ath9k_hw_init_global_settings(struct ath_hw *ah)
1052 struct ath_common *common = ath9k_hw_common(ah);
1053 struct ieee80211_conf *conf = &common->hw->conf;
1054 const struct ath9k_channel *chan = ah->curchan;
1055 int acktimeout, ctstimeout, ack_offset = 0;
1058 int rx_lat = 0, tx_lat = 0, eifs = 0;
1061 ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
1067 if (ah->misc_mode != 0)
1068 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
1070 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1076 if (IS_CHAN_5GHZ(chan))
1081 if (IS_CHAN_HALF_RATE(chan)) {
1085 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1091 } else if (IS_CHAN_QUARTER_RATE(chan)) {
1093 rx_lat = (rx_lat * 4) - 1;
1095 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1102 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1103 eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
1104 reg = AR_USEC_ASYNC_FIFO;
1106 eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
1108 reg = REG_READ(ah, AR_USEC);
1110 rx_lat = MS(reg, AR_USEC_RX_LAT);
1111 tx_lat = MS(reg, AR_USEC_TX_LAT);
1113 slottime = ah->slottime;
1116 /* As defined by IEEE 802.11-2007 17.3.8.6 */
1117 acktimeout = slottime + sifstime + 3 * ah->coverage_class + ack_offset;
1118 ctstimeout = acktimeout;
1121 * Workaround for early ACK timeouts, add an offset to match the
1122 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
1123 * This was initially only meant to work around an issue with delayed
1124 * BA frames in some implementations, but it has been found to fix ACK
1125 * timeout issues in other cases as well.
1127 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ &&
1128 !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
1129 acktimeout += 64 - sifstime - ah->slottime;
1130 ctstimeout += 48 - sifstime - ah->slottime;
1134 ath9k_hw_set_sifs_time(ah, sifstime);
1135 ath9k_hw_setslottime(ah, slottime);
1136 ath9k_hw_set_ack_timeout(ah, acktimeout);
1137 ath9k_hw_set_cts_timeout(ah, ctstimeout);
1138 if (ah->globaltxtimeout != (u32) -1)
1139 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
1141 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
1142 REG_RMW(ah, AR_USEC,
1143 (common->clockrate - 1) |
1144 SM(rx_lat, AR_USEC_RX_LAT) |
1145 SM(tx_lat, AR_USEC_TX_LAT),
1146 AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
1149 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
1151 void ath9k_hw_deinit(struct ath_hw *ah)
1153 struct ath_common *common = ath9k_hw_common(ah);
1155 if (common->state < ATH_HW_INITIALIZED)
1158 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1161 ath9k_hw_rf_free_ext_banks(ah);
1163 EXPORT_SYMBOL(ath9k_hw_deinit);
1169 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
1171 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
1173 if (IS_CHAN_B(chan))
1175 else if (IS_CHAN_G(chan))
1183 /****************************************/
1184 /* Reset and Channel Switching Routines */
1185 /****************************************/
1187 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
1189 struct ath_common *common = ath9k_hw_common(ah);
1191 ENABLE_REGWRITE_BUFFER(ah);
1194 * set AHB_MODE not to do cacheline prefetches
1196 if (!AR_SREV_9300_20_OR_LATER(ah))
1197 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
1200 * let mac dma reads be in 128 byte chunks
1202 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
1204 REGWRITE_BUFFER_FLUSH(ah);
1207 * Restore TX Trigger Level to its pre-reset value.
1208 * The initial value depends on whether aggregation is enabled, and is
1209 * adjusted whenever underruns are detected.
1211 if (!AR_SREV_9300_20_OR_LATER(ah))
1212 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
1214 ENABLE_REGWRITE_BUFFER(ah);
1217 * let mac dma writes be in 128 byte chunks
1219 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
1222 * Setup receive FIFO threshold to hold off TX activities
1224 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
1226 if (AR_SREV_9300_20_OR_LATER(ah)) {
1227 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
1228 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
1230 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
1231 ah->caps.rx_status_len);
1235 * reduce the number of usable entries in PCU TXBUF to avoid
1236 * wrap around issues.
1238 if (AR_SREV_9285(ah)) {
1239 /* For AR9285 the number of Fifos are reduced to half.
1240 * So set the usable tx buf size also to half to
1241 * avoid data/delimiter underruns
1243 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1244 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
1245 } else if (!AR_SREV_9271(ah)) {
1246 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1247 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
1250 REGWRITE_BUFFER_FLUSH(ah);
1252 if (AR_SREV_9300_20_OR_LATER(ah))
1253 ath9k_hw_reset_txstatus_ring(ah);
1256 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
1258 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
1259 u32 set = AR_STA_ID1_KSRCH_MODE;
1262 case NL80211_IFTYPE_ADHOC:
1263 case NL80211_IFTYPE_MESH_POINT:
1264 set |= AR_STA_ID1_ADHOC;
1265 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1267 case NL80211_IFTYPE_AP:
1268 set |= AR_STA_ID1_STA_AP;
1270 case NL80211_IFTYPE_STATION:
1271 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1274 if (!ah->is_monitoring)
1278 REG_RMW(ah, AR_STA_ID1, set, mask);
1281 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1282 u32 *coef_mantissa, u32 *coef_exponent)
1284 u32 coef_exp, coef_man;
1286 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1287 if ((coef_scaled >> coef_exp) & 0x1)
1290 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1292 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1294 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1295 *coef_exponent = coef_exp - 16;
1298 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1303 if (AR_SREV_9100(ah)) {
1304 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1305 AR_RTC_DERIVED_CLK_PERIOD, 1);
1306 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1309 ENABLE_REGWRITE_BUFFER(ah);
1311 if (AR_SREV_9300_20_OR_LATER(ah)) {
1312 REG_WRITE(ah, AR_WA, ah->WARegVal);
1316 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1317 AR_RTC_FORCE_WAKE_ON_INT);
1319 if (AR_SREV_9100(ah)) {
1320 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1321 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1323 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1325 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1326 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1328 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1331 if (!AR_SREV_9300_20_OR_LATER(ah))
1333 REG_WRITE(ah, AR_RC, val);
1335 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1336 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1338 rst_flags = AR_RTC_RC_MAC_WARM;
1339 if (type == ATH9K_RESET_COLD)
1340 rst_flags |= AR_RTC_RC_MAC_COLD;
1343 if (AR_SREV_9330(ah)) {
1348 * call external reset function to reset WMAC if:
1349 * - doing a cold reset
1350 * - we have pending frames in the TX queues
1353 for (i = 0; i < AR_NUM_QCU; i++) {
1354 npend = ath9k_hw_numtxpending(ah, i);
1359 if (ah->external_reset &&
1360 (npend || type == ATH9K_RESET_COLD)) {
1363 ath_dbg(ath9k_hw_common(ah), RESET,
1364 "reset MAC via external reset\n");
1366 reset_err = ah->external_reset();
1368 ath_err(ath9k_hw_common(ah),
1369 "External reset failed, err=%d\n",
1374 REG_WRITE(ah, AR_RTC_RESET, 1);
1378 if (ath9k_hw_mci_is_enabled(ah))
1379 ar9003_mci_check_gpm_offset(ah);
1381 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1383 REGWRITE_BUFFER_FLUSH(ah);
1387 REG_WRITE(ah, AR_RTC_RC, 0);
1388 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1389 ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
1393 if (!AR_SREV_9100(ah))
1394 REG_WRITE(ah, AR_RC, 0);
1396 if (AR_SREV_9100(ah))
1402 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1404 ENABLE_REGWRITE_BUFFER(ah);
1406 if (AR_SREV_9300_20_OR_LATER(ah)) {
1407 REG_WRITE(ah, AR_WA, ah->WARegVal);
1411 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1412 AR_RTC_FORCE_WAKE_ON_INT);
1414 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1415 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1417 REG_WRITE(ah, AR_RTC_RESET, 0);
1419 REGWRITE_BUFFER_FLUSH(ah);
1421 if (!AR_SREV_9300_20_OR_LATER(ah))
1424 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1425 REG_WRITE(ah, AR_RC, 0);
1427 REG_WRITE(ah, AR_RTC_RESET, 1);
1429 if (!ath9k_hw_wait(ah,
1434 ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
1438 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1441 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1445 if (AR_SREV_9300_20_OR_LATER(ah)) {
1446 REG_WRITE(ah, AR_WA, ah->WARegVal);
1450 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1451 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1453 if (!ah->reset_power_on)
1454 type = ATH9K_RESET_POWER_ON;
1457 case ATH9K_RESET_POWER_ON:
1458 ret = ath9k_hw_set_reset_power_on(ah);
1460 ah->reset_power_on = true;
1462 case ATH9K_RESET_WARM:
1463 case ATH9K_RESET_COLD:
1464 ret = ath9k_hw_set_reset(ah, type);
1473 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1474 struct ath9k_channel *chan)
1476 int reset_type = ATH9K_RESET_WARM;
1478 if (AR_SREV_9280(ah)) {
1479 if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1480 reset_type = ATH9K_RESET_POWER_ON;
1482 reset_type = ATH9K_RESET_COLD;
1485 if (!ath9k_hw_set_reset_reg(ah, reset_type))
1488 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1491 ah->chip_fullsleep = false;
1493 if (AR_SREV_9330(ah))
1494 ar9003_hw_internal_regulator_apply(ah);
1495 ath9k_hw_init_pll(ah, chan);
1496 ath9k_hw_set_rfmode(ah, chan);
1501 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1502 struct ath9k_channel *chan)
1504 struct ath_common *common = ath9k_hw_common(ah);
1507 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1508 bool band_switch, mode_diff;
1511 band_switch = (chan->channelFlags & (CHANNEL_2GHZ | CHANNEL_5GHZ)) !=
1512 (ah->curchan->channelFlags & (CHANNEL_2GHZ |
1514 mode_diff = (chan->chanmode != ah->curchan->chanmode);
1516 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1517 if (ath9k_hw_numtxpending(ah, qnum)) {
1518 ath_dbg(common, QUEUE,
1519 "Transmit frames pending on queue %d\n", qnum);
1524 if (!ath9k_hw_rfbus_req(ah)) {
1525 ath_err(common, "Could not kill baseband RX\n");
1529 if (edma && (band_switch || mode_diff)) {
1530 ath9k_hw_mark_phy_inactive(ah);
1533 ath9k_hw_init_pll(ah, NULL);
1535 if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
1536 ath_err(common, "Failed to do fast channel change\n");
1541 ath9k_hw_set_channel_regs(ah, chan);
1543 r = ath9k_hw_rf_set_freq(ah, chan);
1545 ath_err(common, "Failed to set channel\n");
1548 ath9k_hw_set_clockrate(ah);
1549 ath9k_hw_apply_txpower(ah, chan, false);
1550 ath9k_hw_rfbus_done(ah);
1552 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1553 ath9k_hw_set_delta_slope(ah, chan);
1555 ath9k_hw_spur_mitigate_freq(ah, chan);
1557 if (edma && (band_switch || mode_diff)) {
1558 ah->ah_flags |= AH_FASTCC;
1559 if (band_switch || ini_reloaded)
1560 ah->eep_ops->set_board_values(ah, chan);
1562 ath9k_hw_init_bb(ah, chan);
1564 if (band_switch || ini_reloaded)
1565 ath9k_hw_init_cal(ah, chan);
1566 ah->ah_flags &= ~AH_FASTCC;
1572 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1574 u32 gpio_mask = ah->gpio_mask;
1577 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1578 if (!(gpio_mask & 1))
1581 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1582 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1586 static bool ath9k_hw_check_dcs(u32 dma_dbg, u32 num_dcu_states,
1587 int *hang_state, int *hang_pos)
1589 static u32 dcu_chain_state[] = {5, 6, 9}; /* DCU chain stuck states */
1590 u32 chain_state, dcs_pos, i;
1592 for (dcs_pos = 0; dcs_pos < num_dcu_states; dcs_pos++) {
1593 chain_state = (dma_dbg >> (5 * dcs_pos)) & 0x1f;
1594 for (i = 0; i < 3; i++) {
1595 if (chain_state == dcu_chain_state[i]) {
1596 *hang_state = chain_state;
1597 *hang_pos = dcs_pos;
1605 #define DCU_COMPLETE_STATE 1
1606 #define DCU_COMPLETE_STATE_MASK 0x3
1607 #define NUM_STATUS_READS 50
1608 static bool ath9k_hw_detect_mac_hang(struct ath_hw *ah)
1610 u32 chain_state, comp_state, dcs_reg = AR_DMADBG_4;
1611 u32 i, hang_pos, hang_state, num_state = 6;
1613 comp_state = REG_READ(ah, AR_DMADBG_6);
1615 if ((comp_state & DCU_COMPLETE_STATE_MASK) != DCU_COMPLETE_STATE) {
1616 ath_dbg(ath9k_hw_common(ah), RESET,
1617 "MAC Hang signature not found at DCU complete\n");
1621 chain_state = REG_READ(ah, dcs_reg);
1622 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1623 goto hang_check_iter;
1625 dcs_reg = AR_DMADBG_5;
1627 chain_state = REG_READ(ah, dcs_reg);
1628 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1629 goto hang_check_iter;
1631 ath_dbg(ath9k_hw_common(ah), RESET,
1632 "MAC Hang signature 1 not found\n");
1636 ath_dbg(ath9k_hw_common(ah), RESET,
1637 "DCU registers: chain %08x complete %08x Hang: state %d pos %d\n",
1638 chain_state, comp_state, hang_state, hang_pos);
1640 for (i = 0; i < NUM_STATUS_READS; i++) {
1641 chain_state = REG_READ(ah, dcs_reg);
1642 chain_state = (chain_state >> (5 * hang_pos)) & 0x1f;
1643 comp_state = REG_READ(ah, AR_DMADBG_6);
1645 if (((comp_state & DCU_COMPLETE_STATE_MASK) !=
1646 DCU_COMPLETE_STATE) ||
1647 (chain_state != hang_state))
1651 ath_dbg(ath9k_hw_common(ah), RESET, "MAC Hang signature 1 found\n");
1656 bool ath9k_hw_check_alive(struct ath_hw *ah)
1661 if (AR_SREV_9300(ah))
1662 return !ath9k_hw_detect_mac_hang(ah);
1664 if (AR_SREV_9285_12_OR_LATER(ah))
1668 reg = REG_READ(ah, AR_OBS_BUS_1);
1670 if ((reg & 0x7E7FFFEF) == 0x00702400)
1673 switch (reg & 0x7E000B00) {
1681 } while (count-- > 0);
1685 EXPORT_SYMBOL(ath9k_hw_check_alive);
1688 * Fast channel change:
1689 * (Change synthesizer based on channel freq without resetting chip)
1693 * - Chip is just coming out of full sleep
1694 * - Channel to be set is same as current channel
1695 * - Channel flags are different, (eg.,moving from 2GHz to 5GHz channel)
1697 static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
1699 struct ath_common *common = ath9k_hw_common(ah);
1702 if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
1705 if (ah->chip_fullsleep)
1711 if (chan->channel == ah->curchan->channel)
1714 if ((ah->curchan->channelFlags | chan->channelFlags) &
1715 (CHANNEL_HALF | CHANNEL_QUARTER))
1718 if ((chan->channelFlags & CHANNEL_ALL) !=
1719 (ah->curchan->channelFlags & CHANNEL_ALL))
1722 if (!ath9k_hw_check_alive(ah))
1726 * For AR9462, make sure that calibration data for
1727 * re-using are present.
1729 if (AR_SREV_9462(ah) && (ah->caldata &&
1730 (!ah->caldata->done_txiqcal_once ||
1731 !ah->caldata->done_txclcal_once ||
1732 !ah->caldata->rtt_done)))
1735 ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
1736 ah->curchan->channel, chan->channel);
1738 ret = ath9k_hw_channel_change(ah, chan);
1742 if (ath9k_hw_mci_is_enabled(ah))
1743 ar9003_mci_2g5g_switch(ah, false);
1745 ath9k_hw_loadnf(ah, ah->curchan);
1746 ath9k_hw_start_nfcal(ah, true);
1748 if (AR_SREV_9271(ah))
1749 ar9002_hw_load_ani_reg(ah, chan);
1756 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1757 struct ath9k_hw_cal_data *caldata, bool fastcc)
1759 struct ath_common *common = ath9k_hw_common(ah);
1765 bool start_mci_reset = false;
1766 bool save_fullsleep = ah->chip_fullsleep;
1768 if (ath9k_hw_mci_is_enabled(ah)) {
1769 start_mci_reset = ar9003_mci_start_reset(ah, chan);
1770 if (start_mci_reset)
1774 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1777 if (ah->curchan && !ah->chip_fullsleep)
1778 ath9k_hw_getnf(ah, ah->curchan);
1780 ah->caldata = caldata;
1782 (chan->channel != caldata->channel ||
1783 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1784 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1785 /* Operating channel changed, reset channel calibration data */
1786 memset(caldata, 0, sizeof(*caldata));
1787 ath9k_init_nfcal_hist_buffer(ah, chan);
1788 } else if (caldata) {
1789 caldata->paprd_packet_sent = false;
1791 ah->noise = ath9k_hw_getchan_noise(ah, chan);
1794 r = ath9k_hw_do_fastcc(ah, chan);
1799 if (ath9k_hw_mci_is_enabled(ah))
1800 ar9003_mci_stop_bt(ah, save_fullsleep);
1802 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1803 if (saveDefAntenna == 0)
1806 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1808 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1809 if (AR_SREV_9100(ah) ||
1810 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1811 tsf = ath9k_hw_gettsf64(ah);
1813 saveLedState = REG_READ(ah, AR_CFG_LED) &
1814 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1815 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1817 ath9k_hw_mark_phy_inactive(ah);
1819 ah->paprd_table_write_done = false;
1821 /* Only required on the first reset */
1822 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1824 AR9271_RESET_POWER_DOWN_CONTROL,
1825 AR9271_RADIO_RF_RST);
1829 if (!ath9k_hw_chip_reset(ah, chan)) {
1830 ath_err(common, "Chip reset failed\n");
1834 /* Only required on the first reset */
1835 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1836 ah->htc_reset_init = false;
1838 AR9271_RESET_POWER_DOWN_CONTROL,
1839 AR9271_GATE_MAC_CTL);
1845 ath9k_hw_settsf64(ah, tsf);
1847 if (AR_SREV_9280_20_OR_LATER(ah))
1848 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1850 if (!AR_SREV_9300_20_OR_LATER(ah))
1851 ar9002_hw_enable_async_fifo(ah);
1853 r = ath9k_hw_process_ini(ah, chan);
1857 if (ath9k_hw_mci_is_enabled(ah))
1858 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
1861 * Some AR91xx SoC devices frequently fail to accept TSF writes
1862 * right after the chip reset. When that happens, write a new
1863 * value after the initvals have been applied, with an offset
1864 * based on measured time difference
1866 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1868 ath9k_hw_settsf64(ah, tsf);
1871 /* Setup MFP options for CCMP */
1872 if (AR_SREV_9280_20_OR_LATER(ah)) {
1873 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1874 * frames when constructing CCMP AAD. */
1875 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1877 ah->sw_mgmt_crypto = false;
1878 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1879 /* Disable hardware crypto for management frames */
1880 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1881 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1882 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1883 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1884 ah->sw_mgmt_crypto = true;
1886 ah->sw_mgmt_crypto = true;
1888 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1889 ath9k_hw_set_delta_slope(ah, chan);
1891 ath9k_hw_spur_mitigate_freq(ah, chan);
1892 ah->eep_ops->set_board_values(ah, chan);
1894 ENABLE_REGWRITE_BUFFER(ah);
1896 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1897 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1899 | AR_STA_ID1_RTS_USE_DEF
1901 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1902 | ah->sta_id1_defaults);
1903 ath_hw_setbssidmask(common);
1904 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1905 ath9k_hw_write_associd(ah);
1906 REG_WRITE(ah, AR_ISR, ~0);
1907 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1909 REGWRITE_BUFFER_FLUSH(ah);
1911 ath9k_hw_set_operating_mode(ah, ah->opmode);
1913 r = ath9k_hw_rf_set_freq(ah, chan);
1917 ath9k_hw_set_clockrate(ah);
1919 ENABLE_REGWRITE_BUFFER(ah);
1921 for (i = 0; i < AR_NUM_DCU; i++)
1922 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1924 REGWRITE_BUFFER_FLUSH(ah);
1927 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1928 ath9k_hw_resettxqueue(ah, i);
1930 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1931 ath9k_hw_ani_cache_ini_regs(ah);
1932 ath9k_hw_init_qos(ah);
1934 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1935 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1937 ath9k_hw_init_global_settings(ah);
1939 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1940 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1941 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1942 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1943 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1944 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1945 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1948 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1950 ath9k_hw_set_dma(ah);
1952 if (!ath9k_hw_mci_is_enabled(ah))
1953 REG_WRITE(ah, AR_OBS, 8);
1955 if (ah->config.rx_intr_mitigation) {
1956 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1957 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1960 if (ah->config.tx_intr_mitigation) {
1961 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1962 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1965 ath9k_hw_init_bb(ah, chan);
1968 caldata->done_txiqcal_once = false;
1969 caldata->done_txclcal_once = false;
1971 if (!ath9k_hw_init_cal(ah, chan))
1974 if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
1977 ENABLE_REGWRITE_BUFFER(ah);
1979 ath9k_hw_restore_chainmask(ah);
1980 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1982 REGWRITE_BUFFER_FLUSH(ah);
1985 * For big endian systems turn on swapping for descriptors
1987 if (AR_SREV_9100(ah)) {
1989 mask = REG_READ(ah, AR_CFG);
1990 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1991 ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
1995 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1996 REG_WRITE(ah, AR_CFG, mask);
1997 ath_dbg(common, RESET, "Setting CFG 0x%x\n",
1998 REG_READ(ah, AR_CFG));
2001 if (common->bus_ops->ath_bus_type == ATH_USB) {
2002 /* Configure AR9271 target WLAN */
2003 if (AR_SREV_9271(ah))
2004 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
2006 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
2009 else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
2011 REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
2013 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
2017 if (ath9k_hw_btcoex_is_enabled(ah))
2018 ath9k_hw_btcoex_enable(ah);
2020 if (ath9k_hw_mci_is_enabled(ah))
2021 ar9003_mci_check_bt(ah);
2023 ath9k_hw_loadnf(ah, chan);
2024 ath9k_hw_start_nfcal(ah, true);
2026 if (AR_SREV_9300_20_OR_LATER(ah)) {
2027 ar9003_hw_bb_watchdog_config(ah);
2029 ar9003_hw_disable_phy_restart(ah);
2032 ath9k_hw_apply_gpio_override(ah);
2034 if (AR_SREV_9565(ah) && ah->shared_chain_lnadiv)
2035 REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
2039 EXPORT_SYMBOL(ath9k_hw_reset);
2041 /******************************/
2042 /* Power Management (Chipset) */
2043 /******************************/
2046 * Notify Power Mgt is disabled in self-generated frames.
2047 * If requested, force chip to sleep.
2049 static void ath9k_set_power_sleep(struct ath_hw *ah)
2051 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2053 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
2054 REG_CLR_BIT(ah, AR_TIMER_MODE, 0xff);
2055 REG_CLR_BIT(ah, AR_NDP2_TIMER_MODE, 0xff);
2056 REG_CLR_BIT(ah, AR_SLP32_INC, 0xfffff);
2057 /* xxx Required for WLAN only case ? */
2058 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
2063 * Clear the RTC force wake bit to allow the
2064 * mac to go to sleep.
2066 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2068 if (ath9k_hw_mci_is_enabled(ah))
2071 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
2072 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
2074 /* Shutdown chip. Active low */
2075 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
2076 REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
2080 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
2081 if (AR_SREV_9300_20_OR_LATER(ah))
2082 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2086 * Notify Power Management is enabled in self-generating
2087 * frames. If request, set power mode of chip to
2088 * auto/normal. Duration in units of 128us (1/8 TU).
2090 static void ath9k_set_power_network_sleep(struct ath_hw *ah)
2092 struct ath9k_hw_capabilities *pCap = &ah->caps;
2094 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2096 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
2097 /* Set WakeOnInterrupt bit; clear ForceWake bit */
2098 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
2099 AR_RTC_FORCE_WAKE_ON_INT);
2102 /* When chip goes into network sleep, it could be waken
2103 * up by MCI_INT interrupt caused by BT's HW messages
2104 * (LNA_xxx, CONT_xxx) which chould be in a very fast
2105 * rate (~100us). This will cause chip to leave and
2106 * re-enter network sleep mode frequently, which in
2107 * consequence will have WLAN MCI HW to generate lots of
2108 * SYS_WAKING and SYS_SLEEPING messages which will make
2109 * BT CPU to busy to process.
2111 if (ath9k_hw_mci_is_enabled(ah))
2112 REG_CLR_BIT(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
2113 AR_MCI_INTERRUPT_RX_HW_MSG_MASK);
2115 * Clear the RTC force wake bit to allow the
2116 * mac to go to sleep.
2118 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2120 if (ath9k_hw_mci_is_enabled(ah))
2124 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
2125 if (AR_SREV_9300_20_OR_LATER(ah))
2126 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2129 static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
2134 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
2135 if (AR_SREV_9300_20_OR_LATER(ah)) {
2136 REG_WRITE(ah, AR_WA, ah->WARegVal);
2140 if ((REG_READ(ah, AR_RTC_STATUS) &
2141 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
2142 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
2145 if (!AR_SREV_9300_20_OR_LATER(ah))
2146 ath9k_hw_init_pll(ah, NULL);
2148 if (AR_SREV_9100(ah))
2149 REG_SET_BIT(ah, AR_RTC_RESET,
2152 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2153 AR_RTC_FORCE_WAKE_EN);
2156 if (ath9k_hw_mci_is_enabled(ah))
2157 ar9003_mci_set_power_awake(ah);
2159 for (i = POWER_UP_TIME / 50; i > 0; i--) {
2160 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
2161 if (val == AR_RTC_STATUS_ON)
2164 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2165 AR_RTC_FORCE_WAKE_EN);
2168 ath_err(ath9k_hw_common(ah),
2169 "Failed to wakeup in %uus\n",
2170 POWER_UP_TIME / 20);
2174 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2179 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
2181 struct ath_common *common = ath9k_hw_common(ah);
2183 static const char *modes[] = {
2190 if (ah->power_mode == mode)
2193 ath_dbg(common, RESET, "%s -> %s\n",
2194 modes[ah->power_mode], modes[mode]);
2197 case ATH9K_PM_AWAKE:
2198 status = ath9k_hw_set_power_awake(ah);
2200 case ATH9K_PM_FULL_SLEEP:
2201 if (ath9k_hw_mci_is_enabled(ah))
2202 ar9003_mci_set_full_sleep(ah);
2204 ath9k_set_power_sleep(ah);
2205 ah->chip_fullsleep = true;
2207 case ATH9K_PM_NETWORK_SLEEP:
2208 ath9k_set_power_network_sleep(ah);
2211 ath_err(common, "Unknown power mode %u\n", mode);
2214 ah->power_mode = mode;
2217 * XXX: If this warning never comes up after a while then
2218 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
2219 * ath9k_hw_setpower() return type void.
2222 if (!(ah->ah_flags & AH_UNPLUGGED))
2223 ATH_DBG_WARN_ON_ONCE(!status);
2227 EXPORT_SYMBOL(ath9k_hw_setpower);
2229 /*******************/
2230 /* Beacon Handling */
2231 /*******************/
2233 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2237 ENABLE_REGWRITE_BUFFER(ah);
2239 switch (ah->opmode) {
2240 case NL80211_IFTYPE_ADHOC:
2241 case NL80211_IFTYPE_MESH_POINT:
2242 REG_SET_BIT(ah, AR_TXCFG,
2243 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2244 REG_WRITE(ah, AR_NEXT_NDP_TIMER, next_beacon +
2245 TU_TO_USEC(ah->atim_window ? ah->atim_window : 1));
2246 flags |= AR_NDP_TIMER_EN;
2247 case NL80211_IFTYPE_AP:
2248 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
2249 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
2250 TU_TO_USEC(ah->config.dma_beacon_response_time));
2251 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
2252 TU_TO_USEC(ah->config.sw_beacon_response_time));
2254 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2257 ath_dbg(ath9k_hw_common(ah), BEACON,
2258 "%s: unsupported opmode: %d\n", __func__, ah->opmode);
2263 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
2264 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
2265 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
2266 REG_WRITE(ah, AR_NDP_PERIOD, beacon_period);
2268 REGWRITE_BUFFER_FLUSH(ah);
2270 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2272 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2274 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2275 const struct ath9k_beacon_state *bs)
2277 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2278 struct ath9k_hw_capabilities *pCap = &ah->caps;
2279 struct ath_common *common = ath9k_hw_common(ah);
2281 ENABLE_REGWRITE_BUFFER(ah);
2283 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
2285 REG_WRITE(ah, AR_BEACON_PERIOD,
2286 TU_TO_USEC(bs->bs_intval));
2287 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
2288 TU_TO_USEC(bs->bs_intval));
2290 REGWRITE_BUFFER_FLUSH(ah);
2292 REG_RMW_FIELD(ah, AR_RSSI_THR,
2293 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2295 beaconintval = bs->bs_intval;
2297 if (bs->bs_sleepduration > beaconintval)
2298 beaconintval = bs->bs_sleepduration;
2300 dtimperiod = bs->bs_dtimperiod;
2301 if (bs->bs_sleepduration > dtimperiod)
2302 dtimperiod = bs->bs_sleepduration;
2304 if (beaconintval == dtimperiod)
2305 nextTbtt = bs->bs_nextdtim;
2307 nextTbtt = bs->bs_nexttbtt;
2309 ath_dbg(common, BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2310 ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
2311 ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
2312 ath_dbg(common, BEACON, "DTIM period %d\n", dtimperiod);
2314 ENABLE_REGWRITE_BUFFER(ah);
2316 REG_WRITE(ah, AR_NEXT_DTIM,
2317 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
2318 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
2320 REG_WRITE(ah, AR_SLEEP1,
2321 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2322 | AR_SLEEP1_ASSUME_DTIM);
2324 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2325 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2327 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2329 REG_WRITE(ah, AR_SLEEP2,
2330 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2332 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
2333 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
2335 REGWRITE_BUFFER_FLUSH(ah);
2337 REG_SET_BIT(ah, AR_TIMER_MODE,
2338 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2341 /* TSF Out of Range Threshold */
2342 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2344 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2346 /*******************/
2347 /* HW Capabilities */
2348 /*******************/
2350 static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
2352 eeprom_chainmask &= chip_chainmask;
2353 if (eeprom_chainmask)
2354 return eeprom_chainmask;
2356 return chip_chainmask;
2360 * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
2361 * @ah: the atheros hardware data structure
2363 * We enable DFS support upstream on chipsets which have passed a series
2364 * of tests. The testing requirements are going to be documented. Desired
2365 * test requirements are documented at:
2367 * http://wireless.kernel.org/en/users/Drivers/ath9k/dfs
2369 * Once a new chipset gets properly tested an individual commit can be used
2370 * to document the testing for DFS for that chipset.
2372 static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
2375 switch (ah->hw_version.macVersion) {
2376 /* AR9580 will likely be our first target to get testing on */
2377 case AR_SREV_VERSION_9580:
2383 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2385 struct ath9k_hw_capabilities *pCap = &ah->caps;
2386 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2387 struct ath_common *common = ath9k_hw_common(ah);
2388 unsigned int chip_chainmask;
2391 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
2393 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2394 regulatory->current_rd = eeval;
2396 if (ah->opmode != NL80211_IFTYPE_AP &&
2397 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2398 if (regulatory->current_rd == 0x64 ||
2399 regulatory->current_rd == 0x65)
2400 regulatory->current_rd += 5;
2401 else if (regulatory->current_rd == 0x41)
2402 regulatory->current_rd = 0x43;
2403 ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
2404 regulatory->current_rd);
2407 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2408 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
2410 "no band has been marked as supported in EEPROM\n");
2414 if (eeval & AR5416_OPFLAGS_11A)
2415 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
2417 if (eeval & AR5416_OPFLAGS_11G)
2418 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
2420 if (AR_SREV_9485(ah) ||
2425 else if (AR_SREV_9462(ah))
2427 else if (!AR_SREV_9280_20_OR_LATER(ah))
2429 else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
2434 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2436 * For AR9271 we will temporarilly uses the rx chainmax as read from
2439 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2440 !(eeval & AR5416_OPFLAGS_11A) &&
2441 !(AR_SREV_9271(ah)))
2442 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2443 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2444 else if (AR_SREV_9100(ah))
2445 pCap->rx_chainmask = 0x7;
2447 /* Use rx_chainmask from EEPROM. */
2448 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2450 pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
2451 pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
2452 ah->txchainmask = pCap->tx_chainmask;
2453 ah->rxchainmask = pCap->rx_chainmask;
2455 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2457 /* enable key search for every frame in an aggregate */
2458 if (AR_SREV_9300_20_OR_LATER(ah))
2459 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
2461 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
2463 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
2464 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2466 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2468 if (AR_SREV_9271(ah))
2469 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2470 else if (AR_DEVID_7010(ah))
2471 pCap->num_gpio_pins = AR7010_NUM_GPIO;
2472 else if (AR_SREV_9300_20_OR_LATER(ah))
2473 pCap->num_gpio_pins = AR9300_NUM_GPIO;
2474 else if (AR_SREV_9287_11_OR_LATER(ah))
2475 pCap->num_gpio_pins = AR9287_NUM_GPIO;
2476 else if (AR_SREV_9285_12_OR_LATER(ah))
2477 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2478 else if (AR_SREV_9280_20_OR_LATER(ah))
2479 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2481 pCap->num_gpio_pins = AR_NUM_GPIO;
2483 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
2484 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2486 pCap->rts_aggr_limit = (8 * 1024);
2488 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2489 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2490 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2492 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2493 ah->rfkill_polarity =
2494 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2496 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2499 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
2500 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2502 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2504 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2505 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2507 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2509 if (AR_SREV_9300_20_OR_LATER(ah)) {
2510 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
2511 if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah) && !AR_SREV_9565(ah))
2512 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
2514 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2515 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2516 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2517 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2518 pCap->txs_len = sizeof(struct ar9003_txs);
2520 pCap->tx_desc_len = sizeof(struct ath_desc);
2521 if (AR_SREV_9280_20(ah))
2522 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
2525 if (AR_SREV_9300_20_OR_LATER(ah))
2526 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
2528 if (AR_SREV_9300_20_OR_LATER(ah))
2529 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
2531 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
2532 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
2534 if (AR_SREV_9285(ah))
2535 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
2537 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2538 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
2539 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2541 if (AR_SREV_9300_20_OR_LATER(ah)) {
2542 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
2543 pCap->hw_caps |= ATH9K_HW_CAP_APM;
2547 if (AR_SREV_9330(ah) || AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
2548 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2550 * enable the diversity-combining algorithm only when
2551 * both enable_lna_div and enable_fast_div are set
2552 * Table for Diversity
2553 * ant_div_alt_lnaconf bit 0-1
2554 * ant_div_main_lnaconf bit 2-3
2555 * ant_div_alt_gaintb bit 4
2556 * ant_div_main_gaintb bit 5
2557 * enable_ant_div_lnadiv bit 6
2558 * enable_ant_fast_div bit 7
2560 if ((ant_div_ctl1 >> 0x6) == 0x3)
2561 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2564 if (AR_SREV_9485_10(ah)) {
2565 pCap->pcie_lcr_extsync_en = true;
2566 pCap->pcie_lcr_offset = 0x80;
2569 if (ath9k_hw_dfs_tested(ah))
2570 pCap->hw_caps |= ATH9K_HW_CAP_DFS;
2572 tx_chainmask = pCap->tx_chainmask;
2573 rx_chainmask = pCap->rx_chainmask;
2574 while (tx_chainmask || rx_chainmask) {
2575 if (tx_chainmask & BIT(0))
2576 pCap->max_txchains++;
2577 if (rx_chainmask & BIT(0))
2578 pCap->max_rxchains++;
2584 if (AR_SREV_9300_20_OR_LATER(ah)) {
2585 ah->enabled_cals |= TX_IQ_CAL;
2586 if (AR_SREV_9485_OR_LATER(ah))
2587 ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
2590 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
2591 if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
2592 pCap->hw_caps |= ATH9K_HW_CAP_MCI;
2594 if (AR_SREV_9462_20(ah))
2595 pCap->hw_caps |= ATH9K_HW_CAP_RTT;
2599 if (AR_SREV_9280_20_OR_LATER(ah)) {
2600 pCap->hw_caps |= ATH9K_HW_WOW_DEVICE_CAPABLE |
2601 ATH9K_HW_WOW_PATTERN_MATCH_EXACT;
2603 if (AR_SREV_9280(ah))
2604 pCap->hw_caps |= ATH9K_HW_WOW_PATTERN_MATCH_DWORD;
2610 /****************************/
2611 /* GPIO / RFKILL / Antennae */
2612 /****************************/
2614 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2618 u32 gpio_shift, tmp;
2621 addr = AR_GPIO_OUTPUT_MUX3;
2623 addr = AR_GPIO_OUTPUT_MUX2;
2625 addr = AR_GPIO_OUTPUT_MUX1;
2627 gpio_shift = (gpio % 6) * 5;
2629 if (AR_SREV_9280_20_OR_LATER(ah)
2630 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2631 REG_RMW(ah, addr, (type << gpio_shift),
2632 (0x1f << gpio_shift));
2634 tmp = REG_READ(ah, addr);
2635 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2636 tmp &= ~(0x1f << gpio_shift);
2637 tmp |= (type << gpio_shift);
2638 REG_WRITE(ah, addr, tmp);
2642 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2646 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2648 if (AR_DEVID_7010(ah)) {
2650 REG_RMW(ah, AR7010_GPIO_OE,
2651 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2652 (AR7010_GPIO_OE_MASK << gpio_shift));
2656 gpio_shift = gpio << 1;
2659 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2660 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2662 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2664 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2666 #define MS_REG_READ(x, y) \
2667 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2669 if (gpio >= ah->caps.num_gpio_pins)
2672 if (AR_DEVID_7010(ah)) {
2674 val = REG_READ(ah, AR7010_GPIO_IN);
2675 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2676 } else if (AR_SREV_9300_20_OR_LATER(ah))
2677 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2678 AR_GPIO_BIT(gpio)) != 0;
2679 else if (AR_SREV_9271(ah))
2680 return MS_REG_READ(AR9271, gpio) != 0;
2681 else if (AR_SREV_9287_11_OR_LATER(ah))
2682 return MS_REG_READ(AR9287, gpio) != 0;
2683 else if (AR_SREV_9285_12_OR_LATER(ah))
2684 return MS_REG_READ(AR9285, gpio) != 0;
2685 else if (AR_SREV_9280_20_OR_LATER(ah))
2686 return MS_REG_READ(AR928X, gpio) != 0;
2688 return MS_REG_READ(AR, gpio) != 0;
2690 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2692 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2697 if (AR_DEVID_7010(ah)) {
2699 REG_RMW(ah, AR7010_GPIO_OE,
2700 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2701 (AR7010_GPIO_OE_MASK << gpio_shift));
2705 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2706 gpio_shift = 2 * gpio;
2709 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2710 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2712 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2714 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2716 if (AR_DEVID_7010(ah)) {
2718 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2723 if (AR_SREV_9271(ah))
2726 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2729 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2731 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2733 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2735 EXPORT_SYMBOL(ath9k_hw_setantenna);
2737 /*********************/
2738 /* General Operation */
2739 /*********************/
2741 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2743 u32 bits = REG_READ(ah, AR_RX_FILTER);
2744 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2746 if (phybits & AR_PHY_ERR_RADAR)
2747 bits |= ATH9K_RX_FILTER_PHYRADAR;
2748 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2749 bits |= ATH9K_RX_FILTER_PHYERR;
2753 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2755 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2759 ENABLE_REGWRITE_BUFFER(ah);
2761 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
2762 bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
2764 REG_WRITE(ah, AR_RX_FILTER, bits);
2767 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2768 phybits |= AR_PHY_ERR_RADAR;
2769 if (bits & ATH9K_RX_FILTER_PHYERR)
2770 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2771 REG_WRITE(ah, AR_PHY_ERR, phybits);
2774 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2776 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2778 REGWRITE_BUFFER_FLUSH(ah);
2780 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2782 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2784 if (ath9k_hw_mci_is_enabled(ah))
2785 ar9003_mci_bt_gain_ctrl(ah);
2787 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2790 ath9k_hw_init_pll(ah, NULL);
2791 ah->htc_reset_init = true;
2794 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2796 bool ath9k_hw_disable(struct ath_hw *ah)
2798 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2801 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2804 ath9k_hw_init_pll(ah, NULL);
2807 EXPORT_SYMBOL(ath9k_hw_disable);
2809 static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
2811 enum eeprom_param gain_param;
2813 if (IS_CHAN_2GHZ(chan))
2814 gain_param = EEP_ANTENNA_GAIN_2G;
2816 gain_param = EEP_ANTENNA_GAIN_5G;
2818 return ah->eep_ops->get_eeprom(ah, gain_param);
2821 void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
2824 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2825 struct ieee80211_channel *channel;
2826 int chan_pwr, new_pwr, max_gain;
2827 int ant_gain, ant_reduction = 0;
2832 channel = chan->chan;
2833 chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
2834 new_pwr = min_t(int, chan_pwr, reg->power_limit);
2835 max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
2837 ant_gain = get_antenna_gain(ah, chan);
2838 if (ant_gain > max_gain)
2839 ant_reduction = ant_gain - max_gain;
2841 ah->eep_ops->set_txpower(ah, chan,
2842 ath9k_regd_get_ctl(reg, chan),
2843 ant_reduction, new_pwr, test);
2846 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2848 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2849 struct ath9k_channel *chan = ah->curchan;
2850 struct ieee80211_channel *channel = chan->chan;
2852 reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
2854 channel->max_power = MAX_RATE_POWER / 2;
2856 ath9k_hw_apply_txpower(ah, chan, test);
2859 channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
2861 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2863 void ath9k_hw_setopmode(struct ath_hw *ah)
2865 ath9k_hw_set_operating_mode(ah, ah->opmode);
2867 EXPORT_SYMBOL(ath9k_hw_setopmode);
2869 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2871 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2872 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2874 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2876 void ath9k_hw_write_associd(struct ath_hw *ah)
2878 struct ath_common *common = ath9k_hw_common(ah);
2880 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2881 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2882 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2884 EXPORT_SYMBOL(ath9k_hw_write_associd);
2886 #define ATH9K_MAX_TSF_READ 10
2888 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2890 u32 tsf_lower, tsf_upper1, tsf_upper2;
2893 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2894 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2895 tsf_lower = REG_READ(ah, AR_TSF_L32);
2896 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2897 if (tsf_upper2 == tsf_upper1)
2899 tsf_upper1 = tsf_upper2;
2902 WARN_ON( i == ATH9K_MAX_TSF_READ );
2904 return (((u64)tsf_upper1 << 32) | tsf_lower);
2906 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2908 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2910 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2911 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2913 EXPORT_SYMBOL(ath9k_hw_settsf64);
2915 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2917 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2918 AH_TSF_WRITE_TIMEOUT))
2919 ath_dbg(ath9k_hw_common(ah), RESET,
2920 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2922 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2924 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2926 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, bool set)
2929 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2931 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2933 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2935 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2937 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2940 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2941 macmode = AR_2040_JOINED_RX_CLEAR;
2945 REG_WRITE(ah, AR_2040_MODE, macmode);
2948 /* HW Generic timers configuration */
2950 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2952 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2953 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2954 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2955 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2956 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2957 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2958 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2959 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2960 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2961 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2962 AR_NDP2_TIMER_MODE, 0x0002},
2963 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2964 AR_NDP2_TIMER_MODE, 0x0004},
2965 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2966 AR_NDP2_TIMER_MODE, 0x0008},
2967 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2968 AR_NDP2_TIMER_MODE, 0x0010},
2969 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2970 AR_NDP2_TIMER_MODE, 0x0020},
2971 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2972 AR_NDP2_TIMER_MODE, 0x0040},
2973 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2974 AR_NDP2_TIMER_MODE, 0x0080}
2977 /* HW generic timer primitives */
2979 /* compute and clear index of rightmost 1 */
2980 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2990 return timer_table->gen_timer_index[b];
2993 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2995 return REG_READ(ah, AR_TSF_L32);
2997 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2999 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
3000 void (*trigger)(void *),
3001 void (*overflow)(void *),
3005 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3006 struct ath_gen_timer *timer;
3008 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
3010 if (timer == NULL) {
3011 ath_err(ath9k_hw_common(ah),
3012 "Failed to allocate memory for hw timer[%d]\n",
3017 /* allocate a hardware generic timer slot */
3018 timer_table->timers[timer_index] = timer;
3019 timer->index = timer_index;
3020 timer->trigger = trigger;
3021 timer->overflow = overflow;
3026 EXPORT_SYMBOL(ath_gen_timer_alloc);
3028 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
3029 struct ath_gen_timer *timer,
3033 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3034 u32 tsf, timer_next;
3036 BUG_ON(!timer_period);
3038 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
3040 tsf = ath9k_hw_gettsf32(ah);
3042 timer_next = tsf + trig_timeout;
3044 ath_dbg(ath9k_hw_common(ah), HWTIMER,
3045 "current tsf %x period %x timer_next %x\n",
3046 tsf, timer_period, timer_next);
3049 * Program generic timer registers
3051 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
3053 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
3055 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3056 gen_tmr_configuration[timer->index].mode_mask);
3058 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
3060 * Starting from AR9462, each generic timer can select which tsf
3061 * to use. But we still follow the old rule, 0 - 7 use tsf and
3064 if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
3065 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3066 (1 << timer->index));
3068 REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3069 (1 << timer->index));
3072 /* Enable both trigger and thresh interrupt masks */
3073 REG_SET_BIT(ah, AR_IMR_S5,
3074 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3075 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3077 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
3079 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
3081 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3083 if ((timer->index < AR_FIRST_NDP_TIMER) ||
3084 (timer->index >= ATH_MAX_GEN_TIMER)) {
3088 /* Clear generic timer enable bits. */
3089 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3090 gen_tmr_configuration[timer->index].mode_mask);
3092 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
3094 * Need to switch back to TSF if it was using TSF2.
3096 if ((timer->index >= AR_GEN_TIMER_BANK_1_LEN)) {
3097 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3098 (1 << timer->index));
3102 /* Disable both trigger and thresh interrupt masks */
3103 REG_CLR_BIT(ah, AR_IMR_S5,
3104 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3105 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3107 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
3109 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
3111 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
3113 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3115 /* free the hardware generic timer slot */
3116 timer_table->timers[timer->index] = NULL;
3119 EXPORT_SYMBOL(ath_gen_timer_free);
3122 * Generic Timer Interrupts handling
3124 void ath_gen_timer_isr(struct ath_hw *ah)
3126 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3127 struct ath_gen_timer *timer;
3128 struct ath_common *common = ath9k_hw_common(ah);
3129 u32 trigger_mask, thresh_mask, index;
3131 /* get hardware generic timer interrupt status */
3132 trigger_mask = ah->intr_gen_timer_trigger;
3133 thresh_mask = ah->intr_gen_timer_thresh;
3134 trigger_mask &= timer_table->timer_mask.val;
3135 thresh_mask &= timer_table->timer_mask.val;
3137 trigger_mask &= ~thresh_mask;
3139 while (thresh_mask) {
3140 index = rightmost_index(timer_table, &thresh_mask);
3141 timer = timer_table->timers[index];
3143 ath_dbg(common, HWTIMER, "TSF overflow for Gen timer %d\n",
3145 timer->overflow(timer->arg);
3148 while (trigger_mask) {
3149 index = rightmost_index(timer_table, &trigger_mask);
3150 timer = timer_table->timers[index];
3152 ath_dbg(common, HWTIMER,
3153 "Gen timer[%d] trigger\n", index);
3154 timer->trigger(timer->arg);
3157 EXPORT_SYMBOL(ath_gen_timer_isr);
3166 } ath_mac_bb_names[] = {
3167 /* Devices with external radios */
3168 { AR_SREV_VERSION_5416_PCI, "5416" },
3169 { AR_SREV_VERSION_5416_PCIE, "5418" },
3170 { AR_SREV_VERSION_9100, "9100" },
3171 { AR_SREV_VERSION_9160, "9160" },
3172 /* Single-chip solutions */
3173 { AR_SREV_VERSION_9280, "9280" },
3174 { AR_SREV_VERSION_9285, "9285" },
3175 { AR_SREV_VERSION_9287, "9287" },
3176 { AR_SREV_VERSION_9271, "9271" },
3177 { AR_SREV_VERSION_9300, "9300" },
3178 { AR_SREV_VERSION_9330, "9330" },
3179 { AR_SREV_VERSION_9340, "9340" },
3180 { AR_SREV_VERSION_9485, "9485" },
3181 { AR_SREV_VERSION_9462, "9462" },
3182 { AR_SREV_VERSION_9550, "9550" },
3183 { AR_SREV_VERSION_9565, "9565" },
3186 /* For devices with external radios */
3190 } ath_rf_names[] = {
3192 { AR_RAD5133_SREV_MAJOR, "5133" },
3193 { AR_RAD5122_SREV_MAJOR, "5122" },
3194 { AR_RAD2133_SREV_MAJOR, "2133" },
3195 { AR_RAD2122_SREV_MAJOR, "2122" }
3199 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3201 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3205 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3206 if (ath_mac_bb_names[i].version == mac_bb_version) {
3207 return ath_mac_bb_names[i].name;
3215 * Return the RF name. "????" is returned if the RF is unknown.
3216 * Used for devices with external radios.
3218 static const char *ath9k_hw_rf_name(u16 rf_version)
3222 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3223 if (ath_rf_names[i].version == rf_version) {
3224 return ath_rf_names[i].name;
3231 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3235 /* chipsets >= AR9280 are single-chip */
3236 if (AR_SREV_9280_20_OR_LATER(ah)) {
3237 used = snprintf(hw_name, len,
3238 "Atheros AR%s Rev:%x",
3239 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3240 ah->hw_version.macRev);
3243 used = snprintf(hw_name, len,
3244 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3245 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3246 ah->hw_version.macRev,
3247 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
3248 AR_RADIO_SREV_MAJOR)),
3249 ah->hw_version.phyRev);
3252 hw_name[used] = '\0';
3254 EXPORT_SYMBOL(ath9k_hw_name);