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"
30 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
32 MODULE_AUTHOR("Atheros Communications");
33 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
34 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
35 MODULE_LICENSE("Dual BSD/GPL");
37 static int __init ath9k_init(void)
41 module_init(ath9k_init);
43 static void __exit ath9k_exit(void)
47 module_exit(ath9k_exit);
49 /* Private hardware callbacks */
51 static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
53 ath9k_hw_private_ops(ah)->init_cal_settings(ah);
56 static void ath9k_hw_init_mode_regs(struct ath_hw *ah)
58 ath9k_hw_private_ops(ah)->init_mode_regs(ah);
61 static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
62 struct ath9k_channel *chan)
64 return ath9k_hw_private_ops(ah)->compute_pll_control(ah, chan);
67 static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah)
69 if (!ath9k_hw_private_ops(ah)->init_mode_gain_regs)
72 ath9k_hw_private_ops(ah)->init_mode_gain_regs(ah);
75 static void ath9k_hw_ani_cache_ini_regs(struct ath_hw *ah)
77 /* You will not have this callback if using the old ANI */
78 if (!ath9k_hw_private_ops(ah)->ani_cache_ini_regs)
81 ath9k_hw_private_ops(ah)->ani_cache_ini_regs(ah);
84 /********************/
85 /* Helper Functions */
86 /********************/
88 #ifdef CONFIG_ATH9K_DEBUGFS
90 void ath9k_debug_sync_cause(struct ath_common *common, u32 sync_cause)
92 struct ath_softc *sc = common->priv;
94 sc->debug.stats.istats.sync_cause_all++;
95 if (sync_cause & AR_INTR_SYNC_RTC_IRQ)
96 sc->debug.stats.istats.sync_rtc_irq++;
97 if (sync_cause & AR_INTR_SYNC_MAC_IRQ)
98 sc->debug.stats.istats.sync_mac_irq++;
99 if (sync_cause & AR_INTR_SYNC_EEPROM_ILLEGAL_ACCESS)
100 sc->debug.stats.istats.eeprom_illegal_access++;
101 if (sync_cause & AR_INTR_SYNC_APB_TIMEOUT)
102 sc->debug.stats.istats.apb_timeout++;
103 if (sync_cause & AR_INTR_SYNC_PCI_MODE_CONFLICT)
104 sc->debug.stats.istats.pci_mode_conflict++;
105 if (sync_cause & AR_INTR_SYNC_HOST1_FATAL)
106 sc->debug.stats.istats.host1_fatal++;
107 if (sync_cause & AR_INTR_SYNC_HOST1_PERR)
108 sc->debug.stats.istats.host1_perr++;
109 if (sync_cause & AR_INTR_SYNC_TRCV_FIFO_PERR)
110 sc->debug.stats.istats.trcv_fifo_perr++;
111 if (sync_cause & AR_INTR_SYNC_RADM_CPL_EP)
112 sc->debug.stats.istats.radm_cpl_ep++;
113 if (sync_cause & AR_INTR_SYNC_RADM_CPL_DLLP_ABORT)
114 sc->debug.stats.istats.radm_cpl_dllp_abort++;
115 if (sync_cause & AR_INTR_SYNC_RADM_CPL_TLP_ABORT)
116 sc->debug.stats.istats.radm_cpl_tlp_abort++;
117 if (sync_cause & AR_INTR_SYNC_RADM_CPL_ECRC_ERR)
118 sc->debug.stats.istats.radm_cpl_ecrc_err++;
119 if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT)
120 sc->debug.stats.istats.radm_cpl_timeout++;
121 if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT)
122 sc->debug.stats.istats.local_timeout++;
123 if (sync_cause & AR_INTR_SYNC_PM_ACCESS)
124 sc->debug.stats.istats.pm_access++;
125 if (sync_cause & AR_INTR_SYNC_MAC_AWAKE)
126 sc->debug.stats.istats.mac_awake++;
127 if (sync_cause & AR_INTR_SYNC_MAC_ASLEEP)
128 sc->debug.stats.istats.mac_asleep++;
129 if (sync_cause & AR_INTR_SYNC_MAC_SLEEP_ACCESS)
130 sc->debug.stats.istats.mac_sleep_access++;
135 static void ath9k_hw_set_clockrate(struct ath_hw *ah)
137 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
138 struct ath_common *common = ath9k_hw_common(ah);
139 unsigned int clockrate;
141 /* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
142 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
144 else if (!ah->curchan) /* should really check for CCK instead */
145 clockrate = ATH9K_CLOCK_RATE_CCK;
146 else if (conf->channel->band == IEEE80211_BAND_2GHZ)
147 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
148 else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
149 clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
151 clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
153 if (conf_is_ht40(conf))
157 if (IS_CHAN_HALF_RATE(ah->curchan))
159 if (IS_CHAN_QUARTER_RATE(ah->curchan))
163 common->clockrate = clockrate;
166 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
168 struct ath_common *common = ath9k_hw_common(ah);
170 return usecs * common->clockrate;
173 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
177 BUG_ON(timeout < AH_TIME_QUANTUM);
179 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
180 if ((REG_READ(ah, reg) & mask) == val)
183 udelay(AH_TIME_QUANTUM);
186 ath_dbg(ath9k_hw_common(ah), ANY,
187 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
188 timeout, reg, REG_READ(ah, reg), mask, val);
192 EXPORT_SYMBOL(ath9k_hw_wait);
194 void ath9k_hw_synth_delay(struct ath_hw *ah, struct ath9k_channel *chan,
198 hw_delay = (4 * hw_delay) / 22;
202 if (IS_CHAN_HALF_RATE(chan))
204 else if (IS_CHAN_QUARTER_RATE(chan))
207 udelay(hw_delay + BASE_ACTIVATE_DELAY);
210 void ath9k_hw_write_array(struct ath_hw *ah, struct ar5416IniArray *array,
211 int column, unsigned int *writecnt)
215 ENABLE_REGWRITE_BUFFER(ah);
216 for (r = 0; r < array->ia_rows; r++) {
217 REG_WRITE(ah, INI_RA(array, r, 0),
218 INI_RA(array, r, column));
221 REGWRITE_BUFFER_FLUSH(ah);
224 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
229 for (i = 0, retval = 0; i < n; i++) {
230 retval = (retval << 1) | (val & 1);
236 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
238 u32 frameLen, u16 rateix,
241 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
247 case WLAN_RC_PHY_CCK:
248 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
251 numBits = frameLen << 3;
252 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
254 case WLAN_RC_PHY_OFDM:
255 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
256 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
257 numBits = OFDM_PLCP_BITS + (frameLen << 3);
258 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
259 txTime = OFDM_SIFS_TIME_QUARTER
260 + OFDM_PREAMBLE_TIME_QUARTER
261 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
262 } else if (ah->curchan &&
263 IS_CHAN_HALF_RATE(ah->curchan)) {
264 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
265 numBits = OFDM_PLCP_BITS + (frameLen << 3);
266 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
267 txTime = OFDM_SIFS_TIME_HALF +
268 OFDM_PREAMBLE_TIME_HALF
269 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
271 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
272 numBits = OFDM_PLCP_BITS + (frameLen << 3);
273 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
274 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
275 + (numSymbols * OFDM_SYMBOL_TIME);
279 ath_err(ath9k_hw_common(ah),
280 "Unknown phy %u (rate ix %u)\n", phy, rateix);
287 EXPORT_SYMBOL(ath9k_hw_computetxtime);
289 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
290 struct ath9k_channel *chan,
291 struct chan_centers *centers)
295 if (!IS_CHAN_HT40(chan)) {
296 centers->ctl_center = centers->ext_center =
297 centers->synth_center = chan->channel;
301 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
302 (chan->chanmode == CHANNEL_G_HT40PLUS)) {
303 centers->synth_center =
304 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
307 centers->synth_center =
308 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
312 centers->ctl_center =
313 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
314 /* 25 MHz spacing is supported by hw but not on upper layers */
315 centers->ext_center =
316 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
323 static void ath9k_hw_read_revisions(struct ath_hw *ah)
327 switch (ah->hw_version.devid) {
328 case AR5416_AR9100_DEVID:
329 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
331 case AR9300_DEVID_AR9330:
332 ah->hw_version.macVersion = AR_SREV_VERSION_9330;
333 if (ah->get_mac_revision) {
334 ah->hw_version.macRev = ah->get_mac_revision();
336 val = REG_READ(ah, AR_SREV);
337 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
340 case AR9300_DEVID_AR9340:
341 ah->hw_version.macVersion = AR_SREV_VERSION_9340;
342 val = REG_READ(ah, AR_SREV);
343 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
347 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
350 val = REG_READ(ah, AR_SREV);
351 ah->hw_version.macVersion =
352 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
353 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
355 if (AR_SREV_9462(ah))
356 ah->is_pciexpress = true;
358 ah->is_pciexpress = (val &
359 AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
361 if (!AR_SREV_9100(ah))
362 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
364 ah->hw_version.macRev = val & AR_SREV_REVISION;
366 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
367 ah->is_pciexpress = true;
371 /************************************/
372 /* HW Attach, Detach, Init Routines */
373 /************************************/
375 static void ath9k_hw_disablepcie(struct ath_hw *ah)
377 if (!AR_SREV_5416(ah))
380 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
381 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
382 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
383 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
384 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
385 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
386 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
387 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
388 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
390 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
393 /* This should work for all families including legacy */
394 static bool ath9k_hw_chip_test(struct ath_hw *ah)
396 struct ath_common *common = ath9k_hw_common(ah);
397 u32 regAddr[2] = { AR_STA_ID0 };
399 static const u32 patternData[4] = {
400 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
404 if (!AR_SREV_9300_20_OR_LATER(ah)) {
406 regAddr[1] = AR_PHY_BASE + (8 << 2);
410 for (i = 0; i < loop_max; i++) {
411 u32 addr = regAddr[i];
414 regHold[i] = REG_READ(ah, addr);
415 for (j = 0; j < 0x100; j++) {
416 wrData = (j << 16) | j;
417 REG_WRITE(ah, addr, wrData);
418 rdData = REG_READ(ah, addr);
419 if (rdData != wrData) {
421 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
422 addr, wrData, rdData);
426 for (j = 0; j < 4; j++) {
427 wrData = patternData[j];
428 REG_WRITE(ah, addr, wrData);
429 rdData = REG_READ(ah, addr);
430 if (wrData != rdData) {
432 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
433 addr, wrData, rdData);
437 REG_WRITE(ah, regAddr[i], regHold[i]);
444 static void ath9k_hw_init_config(struct ath_hw *ah)
448 ah->config.dma_beacon_response_time = 1;
449 ah->config.sw_beacon_response_time = 6;
450 ah->config.additional_swba_backoff = 0;
451 ah->config.ack_6mb = 0x0;
452 ah->config.cwm_ignore_extcca = 0;
453 ah->config.pcie_clock_req = 0;
454 ah->config.pcie_waen = 0;
455 ah->config.analog_shiftreg = 1;
456 ah->config.enable_ani = true;
458 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
459 ah->config.spurchans[i][0] = AR_NO_SPUR;
460 ah->config.spurchans[i][1] = AR_NO_SPUR;
463 /* PAPRD needs some more work to be enabled */
464 ah->config.paprd_disable = 1;
466 ah->config.rx_intr_mitigation = true;
467 ah->config.pcieSerDesWrite = true;
470 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
471 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
472 * This means we use it for all AR5416 devices, and the few
473 * minor PCI AR9280 devices out there.
475 * Serialization is required because these devices do not handle
476 * well the case of two concurrent reads/writes due to the latency
477 * involved. During one read/write another read/write can be issued
478 * on another CPU while the previous read/write may still be working
479 * on our hardware, if we hit this case the hardware poops in a loop.
480 * We prevent this by serializing reads and writes.
482 * This issue is not present on PCI-Express devices or pre-AR5416
483 * devices (legacy, 802.11abg).
485 if (num_possible_cpus() > 1)
486 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
489 static void ath9k_hw_init_defaults(struct ath_hw *ah)
491 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
493 regulatory->country_code = CTRY_DEFAULT;
494 regulatory->power_limit = MAX_RATE_POWER;
496 ah->hw_version.magic = AR5416_MAGIC;
497 ah->hw_version.subvendorid = 0;
500 ah->sta_id1_defaults =
501 AR_STA_ID1_CRPT_MIC_ENABLE |
502 AR_STA_ID1_MCAST_KSRCH;
503 if (AR_SREV_9100(ah))
504 ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
505 ah->slottime = ATH9K_SLOT_TIME_9;
506 ah->globaltxtimeout = (u32) -1;
507 ah->power_mode = ATH9K_PM_UNDEFINED;
508 ah->htc_reset_init = true;
511 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
513 struct ath_common *common = ath9k_hw_common(ah);
517 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
520 for (i = 0; i < 3; i++) {
521 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
523 common->macaddr[2 * i] = eeval >> 8;
524 common->macaddr[2 * i + 1] = eeval & 0xff;
526 if (sum == 0 || sum == 0xffff * 3)
527 return -EADDRNOTAVAIL;
532 static int ath9k_hw_post_init(struct ath_hw *ah)
534 struct ath_common *common = ath9k_hw_common(ah);
537 if (common->bus_ops->ath_bus_type != ATH_USB) {
538 if (!ath9k_hw_chip_test(ah))
542 if (!AR_SREV_9300_20_OR_LATER(ah)) {
543 ecode = ar9002_hw_rf_claim(ah);
548 ecode = ath9k_hw_eeprom_init(ah);
552 ath_dbg(ath9k_hw_common(ah), CONFIG, "Eeprom VER: %d, REV: %d\n",
553 ah->eep_ops->get_eeprom_ver(ah),
554 ah->eep_ops->get_eeprom_rev(ah));
556 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
558 ath_err(ath9k_hw_common(ah),
559 "Failed allocating banks for external radio\n");
560 ath9k_hw_rf_free_ext_banks(ah);
564 if (ah->config.enable_ani) {
565 ath9k_hw_ani_setup(ah);
566 ath9k_hw_ani_init(ah);
572 static void ath9k_hw_attach_ops(struct ath_hw *ah)
574 if (AR_SREV_9300_20_OR_LATER(ah))
575 ar9003_hw_attach_ops(ah);
577 ar9002_hw_attach_ops(ah);
580 /* Called for all hardware families */
581 static int __ath9k_hw_init(struct ath_hw *ah)
583 struct ath_common *common = ath9k_hw_common(ah);
586 ath9k_hw_read_revisions(ah);
589 * Read back AR_WA into a permanent copy and set bits 14 and 17.
590 * We need to do this to avoid RMW of this register. We cannot
591 * read the reg when chip is asleep.
593 ah->WARegVal = REG_READ(ah, AR_WA);
594 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
595 AR_WA_ASPM_TIMER_BASED_DISABLE);
597 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
598 ath_err(common, "Couldn't reset chip\n");
602 if (AR_SREV_9462(ah))
603 ah->WARegVal &= ~AR_WA_D3_L1_DISABLE;
605 ath9k_hw_init_defaults(ah);
606 ath9k_hw_init_config(ah);
608 ath9k_hw_attach_ops(ah);
610 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
611 ath_err(common, "Couldn't wakeup chip\n");
615 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
616 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
617 ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
618 !ah->is_pciexpress)) {
619 ah->config.serialize_regmode =
622 ah->config.serialize_regmode =
627 ath_dbg(common, RESET, "serialize_regmode is %d\n",
628 ah->config.serialize_regmode);
630 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
631 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
633 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
635 switch (ah->hw_version.macVersion) {
636 case AR_SREV_VERSION_5416_PCI:
637 case AR_SREV_VERSION_5416_PCIE:
638 case AR_SREV_VERSION_9160:
639 case AR_SREV_VERSION_9100:
640 case AR_SREV_VERSION_9280:
641 case AR_SREV_VERSION_9285:
642 case AR_SREV_VERSION_9287:
643 case AR_SREV_VERSION_9271:
644 case AR_SREV_VERSION_9300:
645 case AR_SREV_VERSION_9330:
646 case AR_SREV_VERSION_9485:
647 case AR_SREV_VERSION_9340:
648 case AR_SREV_VERSION_9462:
652 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
653 ah->hw_version.macVersion, ah->hw_version.macRev);
657 if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
659 ah->is_pciexpress = false;
661 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
662 ath9k_hw_init_cal_settings(ah);
664 ah->ani_function = ATH9K_ANI_ALL;
665 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
666 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
667 if (!AR_SREV_9300_20_OR_LATER(ah))
668 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
670 /* disable ANI for 9340 */
671 if (AR_SREV_9340(ah))
672 ah->config.enable_ani = false;
674 ath9k_hw_init_mode_regs(ah);
676 if (!ah->is_pciexpress)
677 ath9k_hw_disablepcie(ah);
679 r = ath9k_hw_post_init(ah);
683 ath9k_hw_init_mode_gain_regs(ah);
684 r = ath9k_hw_fill_cap_info(ah);
688 r = ath9k_hw_init_macaddr(ah);
690 ath_err(common, "Failed to initialize MAC address\n");
694 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
695 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
697 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
699 if (AR_SREV_9330(ah))
700 ah->bb_watchdog_timeout_ms = 85;
702 ah->bb_watchdog_timeout_ms = 25;
704 common->state = ATH_HW_INITIALIZED;
709 int ath9k_hw_init(struct ath_hw *ah)
712 struct ath_common *common = ath9k_hw_common(ah);
714 /* These are all the AR5008/AR9001/AR9002 hardware family of chipsets */
715 switch (ah->hw_version.devid) {
716 case AR5416_DEVID_PCI:
717 case AR5416_DEVID_PCIE:
718 case AR5416_AR9100_DEVID:
719 case AR9160_DEVID_PCI:
720 case AR9280_DEVID_PCI:
721 case AR9280_DEVID_PCIE:
722 case AR9285_DEVID_PCIE:
723 case AR9287_DEVID_PCI:
724 case AR9287_DEVID_PCIE:
725 case AR2427_DEVID_PCIE:
726 case AR9300_DEVID_PCIE:
727 case AR9300_DEVID_AR9485_PCIE:
728 case AR9300_DEVID_AR9330:
729 case AR9300_DEVID_AR9340:
730 case AR9300_DEVID_AR9580:
731 case AR9300_DEVID_AR9462:
734 if (common->bus_ops->ath_bus_type == ATH_USB)
736 ath_err(common, "Hardware device ID 0x%04x not supported\n",
737 ah->hw_version.devid);
741 ret = __ath9k_hw_init(ah);
744 "Unable to initialize hardware; initialization status: %d\n",
751 EXPORT_SYMBOL(ath9k_hw_init);
753 static void ath9k_hw_init_qos(struct ath_hw *ah)
755 ENABLE_REGWRITE_BUFFER(ah);
757 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
758 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
760 REG_WRITE(ah, AR_QOS_NO_ACK,
761 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
762 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
763 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
765 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
766 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
767 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
768 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
769 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
771 REGWRITE_BUFFER_FLUSH(ah);
774 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
776 struct ath_common *common = ath9k_hw_common(ah);
779 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
781 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
783 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
787 if (WARN_ON_ONCE(i >= 100)) {
788 ath_err(common, "PLL4 meaurement not done\n");
795 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
797 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
799 static void ath9k_hw_init_pll(struct ath_hw *ah,
800 struct ath9k_channel *chan)
804 if (AR_SREV_9485(ah)) {
806 /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
807 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
808 AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
809 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
810 AR_CH0_DPLL2_KD, 0x40);
811 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
812 AR_CH0_DPLL2_KI, 0x4);
814 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
815 AR_CH0_BB_DPLL1_REFDIV, 0x5);
816 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
817 AR_CH0_BB_DPLL1_NINI, 0x58);
818 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
819 AR_CH0_BB_DPLL1_NFRAC, 0x0);
821 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
822 AR_CH0_BB_DPLL2_OUTDIV, 0x1);
823 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
824 AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
825 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
826 AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
828 /* program BB PLL phase_shift to 0x6 */
829 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
830 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
832 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
833 AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
835 } else if (AR_SREV_9330(ah)) {
836 u32 ddr_dpll2, pll_control2, kd;
838 if (ah->is_clk_25mhz) {
839 ddr_dpll2 = 0x18e82f01;
840 pll_control2 = 0xe04a3d;
843 ddr_dpll2 = 0x19e82f01;
844 pll_control2 = 0x886666;
848 /* program DDR PLL ki and kd value */
849 REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
851 /* program DDR PLL phase_shift */
852 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
853 AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
855 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
858 /* program refdiv, nint, frac to RTC register */
859 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
861 /* program BB PLL kd and ki value */
862 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
863 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
865 /* program BB PLL phase_shift */
866 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
867 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
868 } else if (AR_SREV_9340(ah)) {
869 u32 regval, pll2_divint, pll2_divfrac, refdiv;
871 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
874 REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
877 if (ah->is_clk_25mhz) {
879 pll2_divfrac = 0x1eb85;
887 regval = REG_READ(ah, AR_PHY_PLL_MODE);
888 regval |= (0x1 << 16);
889 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
892 REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
893 (pll2_divint << 18) | pll2_divfrac);
896 regval = REG_READ(ah, AR_PHY_PLL_MODE);
897 regval = (regval & 0x80071fff) | (0x1 << 30) | (0x1 << 13) |
898 (0x4 << 26) | (0x18 << 19);
899 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
900 REG_WRITE(ah, AR_PHY_PLL_MODE,
901 REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
905 pll = ath9k_hw_compute_pll_control(ah, chan);
907 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
909 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah))
912 /* Switch the core clock for ar9271 to 117Mhz */
913 if (AR_SREV_9271(ah)) {
915 REG_WRITE(ah, 0x50040, 0x304);
918 udelay(RTC_PLL_SETTLE_DELAY);
920 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
922 if (AR_SREV_9340(ah)) {
923 if (ah->is_clk_25mhz) {
924 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
925 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
926 REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
928 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
929 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
930 REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
936 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
937 enum nl80211_iftype opmode)
939 u32 sync_default = AR_INTR_SYNC_DEFAULT;
940 u32 imr_reg = AR_IMR_TXERR |
946 if (AR_SREV_9340(ah))
947 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
949 if (AR_SREV_9300_20_OR_LATER(ah)) {
950 imr_reg |= AR_IMR_RXOK_HP;
951 if (ah->config.rx_intr_mitigation)
952 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
954 imr_reg |= AR_IMR_RXOK_LP;
957 if (ah->config.rx_intr_mitigation)
958 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
960 imr_reg |= AR_IMR_RXOK;
963 if (ah->config.tx_intr_mitigation)
964 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
966 imr_reg |= AR_IMR_TXOK;
968 if (opmode == NL80211_IFTYPE_AP)
969 imr_reg |= AR_IMR_MIB;
971 ENABLE_REGWRITE_BUFFER(ah);
973 REG_WRITE(ah, AR_IMR, imr_reg);
974 ah->imrs2_reg |= AR_IMR_S2_GTT;
975 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
977 if (!AR_SREV_9100(ah)) {
978 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
979 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
980 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
983 REGWRITE_BUFFER_FLUSH(ah);
985 if (AR_SREV_9300_20_OR_LATER(ah)) {
986 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
987 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
988 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
989 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
993 static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
995 u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
996 val = min(val, (u32) 0xFFFF);
997 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
1000 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
1002 u32 val = ath9k_hw_mac_to_clks(ah, us);
1003 val = min(val, (u32) 0xFFFF);
1004 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
1007 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
1009 u32 val = ath9k_hw_mac_to_clks(ah, us);
1010 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
1011 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
1014 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
1016 u32 val = ath9k_hw_mac_to_clks(ah, us);
1017 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
1018 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
1021 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
1024 ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
1026 ah->globaltxtimeout = (u32) -1;
1029 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
1030 ah->globaltxtimeout = tu;
1035 void ath9k_hw_init_global_settings(struct ath_hw *ah)
1037 struct ath_common *common = ath9k_hw_common(ah);
1038 struct ieee80211_conf *conf = &common->hw->conf;
1039 const struct ath9k_channel *chan = ah->curchan;
1040 int acktimeout, ctstimeout, ack_offset = 0;
1043 int rx_lat = 0, tx_lat = 0, eifs = 0;
1046 ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
1052 if (ah->misc_mode != 0)
1053 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
1055 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1061 if (IS_CHAN_5GHZ(chan))
1066 if (IS_CHAN_HALF_RATE(chan)) {
1070 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1076 } else if (IS_CHAN_QUARTER_RATE(chan)) {
1078 rx_lat = (rx_lat * 4) - 1;
1080 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1087 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1088 eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
1089 reg = AR_USEC_ASYNC_FIFO;
1091 eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
1093 reg = REG_READ(ah, AR_USEC);
1095 rx_lat = MS(reg, AR_USEC_RX_LAT);
1096 tx_lat = MS(reg, AR_USEC_TX_LAT);
1098 slottime = ah->slottime;
1101 /* As defined by IEEE 802.11-2007 17.3.8.6 */
1102 acktimeout = slottime + sifstime + 3 * ah->coverage_class + ack_offset;
1103 ctstimeout = acktimeout;
1106 * Workaround for early ACK timeouts, add an offset to match the
1107 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
1108 * This was initially only meant to work around an issue with delayed
1109 * BA frames in some implementations, but it has been found to fix ACK
1110 * timeout issues in other cases as well.
1112 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ &&
1113 !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
1114 acktimeout += 64 - sifstime - ah->slottime;
1115 ctstimeout += 48 - sifstime - ah->slottime;
1119 ath9k_hw_set_sifs_time(ah, sifstime);
1120 ath9k_hw_setslottime(ah, slottime);
1121 ath9k_hw_set_ack_timeout(ah, acktimeout);
1122 ath9k_hw_set_cts_timeout(ah, ctstimeout);
1123 if (ah->globaltxtimeout != (u32) -1)
1124 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
1126 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
1127 REG_RMW(ah, AR_USEC,
1128 (common->clockrate - 1) |
1129 SM(rx_lat, AR_USEC_RX_LAT) |
1130 SM(tx_lat, AR_USEC_TX_LAT),
1131 AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
1134 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
1136 void ath9k_hw_deinit(struct ath_hw *ah)
1138 struct ath_common *common = ath9k_hw_common(ah);
1140 if (common->state < ATH_HW_INITIALIZED)
1143 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1146 ath9k_hw_rf_free_ext_banks(ah);
1148 EXPORT_SYMBOL(ath9k_hw_deinit);
1154 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
1156 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
1158 if (IS_CHAN_B(chan))
1160 else if (IS_CHAN_G(chan))
1168 /****************************************/
1169 /* Reset and Channel Switching Routines */
1170 /****************************************/
1172 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
1174 struct ath_common *common = ath9k_hw_common(ah);
1176 ENABLE_REGWRITE_BUFFER(ah);
1179 * set AHB_MODE not to do cacheline prefetches
1181 if (!AR_SREV_9300_20_OR_LATER(ah))
1182 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
1185 * let mac dma reads be in 128 byte chunks
1187 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
1189 REGWRITE_BUFFER_FLUSH(ah);
1192 * Restore TX Trigger Level to its pre-reset value.
1193 * The initial value depends on whether aggregation is enabled, and is
1194 * adjusted whenever underruns are detected.
1196 if (!AR_SREV_9300_20_OR_LATER(ah))
1197 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
1199 ENABLE_REGWRITE_BUFFER(ah);
1202 * let mac dma writes be in 128 byte chunks
1204 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
1207 * Setup receive FIFO threshold to hold off TX activities
1209 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
1211 if (AR_SREV_9300_20_OR_LATER(ah)) {
1212 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
1213 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
1215 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
1216 ah->caps.rx_status_len);
1220 * reduce the number of usable entries in PCU TXBUF to avoid
1221 * wrap around issues.
1223 if (AR_SREV_9285(ah)) {
1224 /* For AR9285 the number of Fifos are reduced to half.
1225 * So set the usable tx buf size also to half to
1226 * avoid data/delimiter underruns
1228 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1229 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
1230 } else if (!AR_SREV_9271(ah)) {
1231 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1232 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
1235 REGWRITE_BUFFER_FLUSH(ah);
1237 if (AR_SREV_9300_20_OR_LATER(ah))
1238 ath9k_hw_reset_txstatus_ring(ah);
1241 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
1243 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
1244 u32 set = AR_STA_ID1_KSRCH_MODE;
1247 case NL80211_IFTYPE_ADHOC:
1248 case NL80211_IFTYPE_MESH_POINT:
1249 set |= AR_STA_ID1_ADHOC;
1250 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1252 case NL80211_IFTYPE_AP:
1253 set |= AR_STA_ID1_STA_AP;
1255 case NL80211_IFTYPE_STATION:
1256 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1259 if (!ah->is_monitoring)
1263 REG_RMW(ah, AR_STA_ID1, set, mask);
1266 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1267 u32 *coef_mantissa, u32 *coef_exponent)
1269 u32 coef_exp, coef_man;
1271 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1272 if ((coef_scaled >> coef_exp) & 0x1)
1275 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1277 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1279 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1280 *coef_exponent = coef_exp - 16;
1283 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1288 if (AR_SREV_9100(ah)) {
1289 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1290 AR_RTC_DERIVED_CLK_PERIOD, 1);
1291 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1294 ENABLE_REGWRITE_BUFFER(ah);
1296 if (AR_SREV_9300_20_OR_LATER(ah)) {
1297 REG_WRITE(ah, AR_WA, ah->WARegVal);
1301 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1302 AR_RTC_FORCE_WAKE_ON_INT);
1304 if (AR_SREV_9100(ah)) {
1305 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1306 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1308 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1310 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1311 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1313 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1316 if (!AR_SREV_9300_20_OR_LATER(ah))
1318 REG_WRITE(ah, AR_RC, val);
1320 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1321 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1323 rst_flags = AR_RTC_RC_MAC_WARM;
1324 if (type == ATH9K_RESET_COLD)
1325 rst_flags |= AR_RTC_RC_MAC_COLD;
1328 if (AR_SREV_9330(ah)) {
1333 * call external reset function to reset WMAC if:
1334 * - doing a cold reset
1335 * - we have pending frames in the TX queues
1338 for (i = 0; i < AR_NUM_QCU; i++) {
1339 npend = ath9k_hw_numtxpending(ah, i);
1344 if (ah->external_reset &&
1345 (npend || type == ATH9K_RESET_COLD)) {
1348 ath_dbg(ath9k_hw_common(ah), RESET,
1349 "reset MAC via external reset\n");
1351 reset_err = ah->external_reset();
1353 ath_err(ath9k_hw_common(ah),
1354 "External reset failed, err=%d\n",
1359 REG_WRITE(ah, AR_RTC_RESET, 1);
1363 if (ath9k_hw_mci_is_enabled(ah))
1364 ar9003_mci_check_gpm_offset(ah);
1366 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1368 REGWRITE_BUFFER_FLUSH(ah);
1372 REG_WRITE(ah, AR_RTC_RC, 0);
1373 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1374 ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
1378 if (!AR_SREV_9100(ah))
1379 REG_WRITE(ah, AR_RC, 0);
1381 if (AR_SREV_9100(ah))
1387 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1389 ENABLE_REGWRITE_BUFFER(ah);
1391 if (AR_SREV_9300_20_OR_LATER(ah)) {
1392 REG_WRITE(ah, AR_WA, ah->WARegVal);
1396 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1397 AR_RTC_FORCE_WAKE_ON_INT);
1399 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1400 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1402 REG_WRITE(ah, AR_RTC_RESET, 0);
1404 REGWRITE_BUFFER_FLUSH(ah);
1406 if (!AR_SREV_9300_20_OR_LATER(ah))
1409 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1410 REG_WRITE(ah, AR_RC, 0);
1412 REG_WRITE(ah, AR_RTC_RESET, 1);
1414 if (!ath9k_hw_wait(ah,
1419 ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
1423 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1426 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1430 if (AR_SREV_9300_20_OR_LATER(ah)) {
1431 REG_WRITE(ah, AR_WA, ah->WARegVal);
1435 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1436 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1439 case ATH9K_RESET_POWER_ON:
1440 ret = ath9k_hw_set_reset_power_on(ah);
1442 case ATH9K_RESET_WARM:
1443 case ATH9K_RESET_COLD:
1444 ret = ath9k_hw_set_reset(ah, type);
1453 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1454 struct ath9k_channel *chan)
1456 int reset_type = ATH9K_RESET_WARM;
1458 if (AR_SREV_9280(ah)) {
1459 if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1460 reset_type = ATH9K_RESET_POWER_ON;
1462 reset_type = ATH9K_RESET_COLD;
1465 if (!ath9k_hw_set_reset_reg(ah, reset_type))
1468 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1471 ah->chip_fullsleep = false;
1473 if (AR_SREV_9330(ah))
1474 ar9003_hw_internal_regulator_apply(ah);
1475 ath9k_hw_init_pll(ah, chan);
1476 ath9k_hw_set_rfmode(ah, chan);
1481 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1482 struct ath9k_channel *chan)
1484 struct ath_common *common = ath9k_hw_common(ah);
1487 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1488 bool band_switch, mode_diff;
1491 band_switch = (chan->channelFlags & (CHANNEL_2GHZ | CHANNEL_5GHZ)) !=
1492 (ah->curchan->channelFlags & (CHANNEL_2GHZ |
1494 mode_diff = (chan->chanmode != ah->curchan->chanmode);
1496 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1497 if (ath9k_hw_numtxpending(ah, qnum)) {
1498 ath_dbg(common, QUEUE,
1499 "Transmit frames pending on queue %d\n", qnum);
1504 if (!ath9k_hw_rfbus_req(ah)) {
1505 ath_err(common, "Could not kill baseband RX\n");
1509 if (edma && (band_switch || mode_diff)) {
1510 ath9k_hw_mark_phy_inactive(ah);
1513 ath9k_hw_init_pll(ah, NULL);
1515 if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
1516 ath_err(common, "Failed to do fast channel change\n");
1521 ath9k_hw_set_channel_regs(ah, chan);
1523 r = ath9k_hw_rf_set_freq(ah, chan);
1525 ath_err(common, "Failed to set channel\n");
1528 ath9k_hw_set_clockrate(ah);
1529 ath9k_hw_apply_txpower(ah, chan, false);
1530 ath9k_hw_rfbus_done(ah);
1532 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1533 ath9k_hw_set_delta_slope(ah, chan);
1535 ath9k_hw_spur_mitigate_freq(ah, chan);
1537 if (edma && (band_switch || mode_diff)) {
1538 ah->ah_flags |= AH_FASTCC;
1539 if (band_switch || ini_reloaded)
1540 ah->eep_ops->set_board_values(ah, chan);
1542 ath9k_hw_init_bb(ah, chan);
1544 if (band_switch || ini_reloaded)
1545 ath9k_hw_init_cal(ah, chan);
1546 ah->ah_flags &= ~AH_FASTCC;
1552 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1554 u32 gpio_mask = ah->gpio_mask;
1557 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1558 if (!(gpio_mask & 1))
1561 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1562 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1566 static bool ath9k_hw_check_dcs(u32 dma_dbg, u32 num_dcu_states,
1567 int *hang_state, int *hang_pos)
1569 static u32 dcu_chain_state[] = {5, 6, 9}; /* DCU chain stuck states */
1570 u32 chain_state, dcs_pos, i;
1572 for (dcs_pos = 0; dcs_pos < num_dcu_states; dcs_pos++) {
1573 chain_state = (dma_dbg >> (5 * dcs_pos)) & 0x1f;
1574 for (i = 0; i < 3; i++) {
1575 if (chain_state == dcu_chain_state[i]) {
1576 *hang_state = chain_state;
1577 *hang_pos = dcs_pos;
1585 #define DCU_COMPLETE_STATE 1
1586 #define DCU_COMPLETE_STATE_MASK 0x3
1587 #define NUM_STATUS_READS 50
1588 static bool ath9k_hw_detect_mac_hang(struct ath_hw *ah)
1590 u32 chain_state, comp_state, dcs_reg = AR_DMADBG_4;
1591 u32 i, hang_pos, hang_state, num_state = 6;
1593 comp_state = REG_READ(ah, AR_DMADBG_6);
1595 if ((comp_state & DCU_COMPLETE_STATE_MASK) != DCU_COMPLETE_STATE) {
1596 ath_dbg(ath9k_hw_common(ah), RESET,
1597 "MAC Hang signature not found at DCU complete\n");
1601 chain_state = REG_READ(ah, dcs_reg);
1602 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1603 goto hang_check_iter;
1605 dcs_reg = AR_DMADBG_5;
1607 chain_state = REG_READ(ah, dcs_reg);
1608 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1609 goto hang_check_iter;
1611 ath_dbg(ath9k_hw_common(ah), RESET,
1612 "MAC Hang signature 1 not found\n");
1616 ath_dbg(ath9k_hw_common(ah), RESET,
1617 "DCU registers: chain %08x complete %08x Hang: state %d pos %d\n",
1618 chain_state, comp_state, hang_state, hang_pos);
1620 for (i = 0; i < NUM_STATUS_READS; i++) {
1621 chain_state = REG_READ(ah, dcs_reg);
1622 chain_state = (chain_state >> (5 * hang_pos)) & 0x1f;
1623 comp_state = REG_READ(ah, AR_DMADBG_6);
1625 if (((comp_state & DCU_COMPLETE_STATE_MASK) !=
1626 DCU_COMPLETE_STATE) ||
1627 (chain_state != hang_state))
1631 ath_dbg(ath9k_hw_common(ah), RESET, "MAC Hang signature 1 found\n");
1636 bool ath9k_hw_check_alive(struct ath_hw *ah)
1641 if (AR_SREV_9300(ah))
1642 return !ath9k_hw_detect_mac_hang(ah);
1644 if (AR_SREV_9285_12_OR_LATER(ah))
1648 reg = REG_READ(ah, AR_OBS_BUS_1);
1650 if ((reg & 0x7E7FFFEF) == 0x00702400)
1653 switch (reg & 0x7E000B00) {
1661 } while (count-- > 0);
1665 EXPORT_SYMBOL(ath9k_hw_check_alive);
1668 * Fast channel change:
1669 * (Change synthesizer based on channel freq without resetting chip)
1673 * - Chip is just coming out of full sleep
1674 * - Channel to be set is same as current channel
1675 * - Channel flags are different, (eg.,moving from 2GHz to 5GHz channel)
1677 static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
1679 struct ath_common *common = ath9k_hw_common(ah);
1682 if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
1685 if (ah->chip_fullsleep)
1691 if (chan->channel == ah->curchan->channel)
1694 if ((ah->curchan->channelFlags | chan->channelFlags) &
1695 (CHANNEL_HALF | CHANNEL_QUARTER))
1698 if ((chan->channelFlags & CHANNEL_ALL) !=
1699 (ah->curchan->channelFlags & CHANNEL_ALL))
1702 if (!ath9k_hw_check_alive(ah))
1706 * For AR9462, make sure that calibration data for
1707 * re-using are present.
1709 if (AR_SREV_9462(ah) && (ah->caldata &&
1710 (!ah->caldata->done_txiqcal_once ||
1711 !ah->caldata->done_txclcal_once ||
1712 !ah->caldata->rtt_done)))
1715 ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
1716 ah->curchan->channel, chan->channel);
1718 ret = ath9k_hw_channel_change(ah, chan);
1722 ath9k_hw_loadnf(ah, ah->curchan);
1723 ath9k_hw_start_nfcal(ah, true);
1725 if (ath9k_hw_mci_is_enabled(ah))
1726 ar9003_mci_2g5g_switch(ah, false);
1728 if (AR_SREV_9271(ah))
1729 ar9002_hw_load_ani_reg(ah, chan);
1736 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1737 struct ath9k_hw_cal_data *caldata, bool fastcc)
1739 struct ath_common *common = ath9k_hw_common(ah);
1745 bool start_mci_reset = false;
1746 bool save_fullsleep = ah->chip_fullsleep;
1748 if (ath9k_hw_mci_is_enabled(ah)) {
1749 start_mci_reset = ar9003_mci_start_reset(ah, chan);
1750 if (start_mci_reset)
1754 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1757 if (ah->curchan && !ah->chip_fullsleep)
1758 ath9k_hw_getnf(ah, ah->curchan);
1760 ah->caldata = caldata;
1762 (chan->channel != caldata->channel ||
1763 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1764 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1765 /* Operating channel changed, reset channel calibration data */
1766 memset(caldata, 0, sizeof(*caldata));
1767 ath9k_init_nfcal_hist_buffer(ah, chan);
1769 ah->noise = ath9k_hw_getchan_noise(ah, chan);
1772 r = ath9k_hw_do_fastcc(ah, chan);
1777 if (ath9k_hw_mci_is_enabled(ah))
1778 ar9003_mci_stop_bt(ah, save_fullsleep);
1780 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1781 if (saveDefAntenna == 0)
1784 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1786 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1787 if (AR_SREV_9100(ah) ||
1788 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1789 tsf = ath9k_hw_gettsf64(ah);
1791 saveLedState = REG_READ(ah, AR_CFG_LED) &
1792 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1793 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1795 ath9k_hw_mark_phy_inactive(ah);
1797 ah->paprd_table_write_done = false;
1799 /* Only required on the first reset */
1800 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1802 AR9271_RESET_POWER_DOWN_CONTROL,
1803 AR9271_RADIO_RF_RST);
1807 if (!ath9k_hw_chip_reset(ah, chan)) {
1808 ath_err(common, "Chip reset failed\n");
1812 /* Only required on the first reset */
1813 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1814 ah->htc_reset_init = false;
1816 AR9271_RESET_POWER_DOWN_CONTROL,
1817 AR9271_GATE_MAC_CTL);
1823 ath9k_hw_settsf64(ah, tsf);
1825 if (AR_SREV_9280_20_OR_LATER(ah))
1826 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1828 if (!AR_SREV_9300_20_OR_LATER(ah))
1829 ar9002_hw_enable_async_fifo(ah);
1831 r = ath9k_hw_process_ini(ah, chan);
1835 if (ath9k_hw_mci_is_enabled(ah))
1836 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
1839 * Some AR91xx SoC devices frequently fail to accept TSF writes
1840 * right after the chip reset. When that happens, write a new
1841 * value after the initvals have been applied, with an offset
1842 * based on measured time difference
1844 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1846 ath9k_hw_settsf64(ah, tsf);
1849 /* Setup MFP options for CCMP */
1850 if (AR_SREV_9280_20_OR_LATER(ah)) {
1851 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1852 * frames when constructing CCMP AAD. */
1853 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1855 ah->sw_mgmt_crypto = false;
1856 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1857 /* Disable hardware crypto for management frames */
1858 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1859 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1860 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1861 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1862 ah->sw_mgmt_crypto = true;
1864 ah->sw_mgmt_crypto = true;
1866 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1867 ath9k_hw_set_delta_slope(ah, chan);
1869 ath9k_hw_spur_mitigate_freq(ah, chan);
1870 ah->eep_ops->set_board_values(ah, chan);
1872 ENABLE_REGWRITE_BUFFER(ah);
1874 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1875 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1877 | AR_STA_ID1_RTS_USE_DEF
1879 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1880 | ah->sta_id1_defaults);
1881 ath_hw_setbssidmask(common);
1882 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1883 ath9k_hw_write_associd(ah);
1884 REG_WRITE(ah, AR_ISR, ~0);
1885 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1887 REGWRITE_BUFFER_FLUSH(ah);
1889 ath9k_hw_set_operating_mode(ah, ah->opmode);
1891 r = ath9k_hw_rf_set_freq(ah, chan);
1895 ath9k_hw_set_clockrate(ah);
1897 ENABLE_REGWRITE_BUFFER(ah);
1899 for (i = 0; i < AR_NUM_DCU; i++)
1900 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1902 REGWRITE_BUFFER_FLUSH(ah);
1905 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1906 ath9k_hw_resettxqueue(ah, i);
1908 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1909 ath9k_hw_ani_cache_ini_regs(ah);
1910 ath9k_hw_init_qos(ah);
1912 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1913 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1915 ath9k_hw_init_global_settings(ah);
1917 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1918 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1919 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1920 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1921 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1922 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1923 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1926 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1928 ath9k_hw_set_dma(ah);
1930 if (!ath9k_hw_mci_is_enabled(ah))
1931 REG_WRITE(ah, AR_OBS, 8);
1933 if (ah->config.rx_intr_mitigation) {
1934 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1935 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1938 if (ah->config.tx_intr_mitigation) {
1939 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1940 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1943 ath9k_hw_init_bb(ah, chan);
1946 caldata->done_txiqcal_once = false;
1947 caldata->done_txclcal_once = false;
1949 if (!ath9k_hw_init_cal(ah, chan))
1952 ath9k_hw_loadnf(ah, chan);
1953 ath9k_hw_start_nfcal(ah, true);
1955 if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
1958 ENABLE_REGWRITE_BUFFER(ah);
1960 ath9k_hw_restore_chainmask(ah);
1961 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1963 REGWRITE_BUFFER_FLUSH(ah);
1966 * For big endian systems turn on swapping for descriptors
1968 if (AR_SREV_9100(ah)) {
1970 mask = REG_READ(ah, AR_CFG);
1971 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1972 ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
1976 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1977 REG_WRITE(ah, AR_CFG, mask);
1978 ath_dbg(common, RESET, "Setting CFG 0x%x\n",
1979 REG_READ(ah, AR_CFG));
1982 if (common->bus_ops->ath_bus_type == ATH_USB) {
1983 /* Configure AR9271 target WLAN */
1984 if (AR_SREV_9271(ah))
1985 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1987 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1990 else if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
1991 REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
1993 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1997 if (ath9k_hw_btcoex_is_enabled(ah))
1998 ath9k_hw_btcoex_enable(ah);
2000 if (ath9k_hw_mci_is_enabled(ah))
2001 ar9003_mci_check_bt(ah);
2003 if (AR_SREV_9300_20_OR_LATER(ah)) {
2004 ar9003_hw_bb_watchdog_config(ah);
2006 ar9003_hw_disable_phy_restart(ah);
2009 ath9k_hw_apply_gpio_override(ah);
2013 EXPORT_SYMBOL(ath9k_hw_reset);
2015 /******************************/
2016 /* Power Management (Chipset) */
2017 /******************************/
2020 * Notify Power Mgt is disabled in self-generated frames.
2021 * If requested, force chip to sleep.
2023 static void ath9k_set_power_sleep(struct ath_hw *ah)
2025 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2027 if (AR_SREV_9462(ah)) {
2028 REG_CLR_BIT(ah, AR_TIMER_MODE, 0xff);
2029 REG_CLR_BIT(ah, AR_NDP2_TIMER_MODE, 0xff);
2030 REG_CLR_BIT(ah, AR_SLP32_INC, 0xfffff);
2031 /* xxx Required for WLAN only case ? */
2032 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
2037 * Clear the RTC force wake bit to allow the
2038 * mac to go to sleep.
2040 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2042 if (ath9k_hw_mci_is_enabled(ah))
2045 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
2046 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
2048 /* Shutdown chip. Active low */
2049 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
2050 REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
2054 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
2055 if (AR_SREV_9300_20_OR_LATER(ah))
2056 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2060 * Notify Power Management is enabled in self-generating
2061 * frames. If request, set power mode of chip to
2062 * auto/normal. Duration in units of 128us (1/8 TU).
2064 static void ath9k_set_power_network_sleep(struct ath_hw *ah)
2066 struct ath9k_hw_capabilities *pCap = &ah->caps;
2068 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2070 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
2071 /* Set WakeOnInterrupt bit; clear ForceWake bit */
2072 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
2073 AR_RTC_FORCE_WAKE_ON_INT);
2076 /* When chip goes into network sleep, it could be waken
2077 * up by MCI_INT interrupt caused by BT's HW messages
2078 * (LNA_xxx, CONT_xxx) which chould be in a very fast
2079 * rate (~100us). This will cause chip to leave and
2080 * re-enter network sleep mode frequently, which in
2081 * consequence will have WLAN MCI HW to generate lots of
2082 * SYS_WAKING and SYS_SLEEPING messages which will make
2083 * BT CPU to busy to process.
2085 if (ath9k_hw_mci_is_enabled(ah))
2086 REG_CLR_BIT(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
2087 AR_MCI_INTERRUPT_RX_HW_MSG_MASK);
2089 * Clear the RTC force wake bit to allow the
2090 * mac to go to sleep.
2092 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2094 if (ath9k_hw_mci_is_enabled(ah))
2098 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
2099 if (AR_SREV_9300_20_OR_LATER(ah))
2100 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2103 static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
2108 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
2109 if (AR_SREV_9300_20_OR_LATER(ah)) {
2110 REG_WRITE(ah, AR_WA, ah->WARegVal);
2114 if ((REG_READ(ah, AR_RTC_STATUS) &
2115 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
2116 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
2119 if (!AR_SREV_9300_20_OR_LATER(ah))
2120 ath9k_hw_init_pll(ah, NULL);
2122 if (AR_SREV_9100(ah))
2123 REG_SET_BIT(ah, AR_RTC_RESET,
2126 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2127 AR_RTC_FORCE_WAKE_EN);
2130 if (ath9k_hw_mci_is_enabled(ah))
2131 ar9003_mci_set_power_awake(ah);
2133 for (i = POWER_UP_TIME / 50; i > 0; i--) {
2134 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
2135 if (val == AR_RTC_STATUS_ON)
2138 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2139 AR_RTC_FORCE_WAKE_EN);
2142 ath_err(ath9k_hw_common(ah),
2143 "Failed to wakeup in %uus\n",
2144 POWER_UP_TIME / 20);
2148 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2153 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
2155 struct ath_common *common = ath9k_hw_common(ah);
2157 static const char *modes[] = {
2164 if (ah->power_mode == mode)
2167 ath_dbg(common, RESET, "%s -> %s\n",
2168 modes[ah->power_mode], modes[mode]);
2171 case ATH9K_PM_AWAKE:
2172 status = ath9k_hw_set_power_awake(ah);
2174 case ATH9K_PM_FULL_SLEEP:
2175 if (ath9k_hw_mci_is_enabled(ah))
2176 ar9003_mci_set_full_sleep(ah);
2178 ath9k_set_power_sleep(ah);
2179 ah->chip_fullsleep = true;
2181 case ATH9K_PM_NETWORK_SLEEP:
2182 ath9k_set_power_network_sleep(ah);
2185 ath_err(common, "Unknown power mode %u\n", mode);
2188 ah->power_mode = mode;
2191 * XXX: If this warning never comes up after a while then
2192 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
2193 * ath9k_hw_setpower() return type void.
2196 if (!(ah->ah_flags & AH_UNPLUGGED))
2197 ATH_DBG_WARN_ON_ONCE(!status);
2201 EXPORT_SYMBOL(ath9k_hw_setpower);
2203 /*******************/
2204 /* Beacon Handling */
2205 /*******************/
2207 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2211 ENABLE_REGWRITE_BUFFER(ah);
2213 switch (ah->opmode) {
2214 case NL80211_IFTYPE_ADHOC:
2215 case NL80211_IFTYPE_MESH_POINT:
2216 REG_SET_BIT(ah, AR_TXCFG,
2217 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2218 REG_WRITE(ah, AR_NEXT_NDP_TIMER, next_beacon +
2219 TU_TO_USEC(ah->atim_window ? ah->atim_window : 1));
2220 flags |= AR_NDP_TIMER_EN;
2221 case NL80211_IFTYPE_AP:
2222 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
2223 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
2224 TU_TO_USEC(ah->config.dma_beacon_response_time));
2225 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
2226 TU_TO_USEC(ah->config.sw_beacon_response_time));
2228 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2231 ath_dbg(ath9k_hw_common(ah), BEACON,
2232 "%s: unsupported opmode: %d\n", __func__, ah->opmode);
2237 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
2238 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
2239 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
2240 REG_WRITE(ah, AR_NDP_PERIOD, beacon_period);
2242 REGWRITE_BUFFER_FLUSH(ah);
2244 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2246 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2248 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2249 const struct ath9k_beacon_state *bs)
2251 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2252 struct ath9k_hw_capabilities *pCap = &ah->caps;
2253 struct ath_common *common = ath9k_hw_common(ah);
2255 ENABLE_REGWRITE_BUFFER(ah);
2257 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
2259 REG_WRITE(ah, AR_BEACON_PERIOD,
2260 TU_TO_USEC(bs->bs_intval));
2261 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
2262 TU_TO_USEC(bs->bs_intval));
2264 REGWRITE_BUFFER_FLUSH(ah);
2266 REG_RMW_FIELD(ah, AR_RSSI_THR,
2267 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2269 beaconintval = bs->bs_intval;
2271 if (bs->bs_sleepduration > beaconintval)
2272 beaconintval = bs->bs_sleepduration;
2274 dtimperiod = bs->bs_dtimperiod;
2275 if (bs->bs_sleepduration > dtimperiod)
2276 dtimperiod = bs->bs_sleepduration;
2278 if (beaconintval == dtimperiod)
2279 nextTbtt = bs->bs_nextdtim;
2281 nextTbtt = bs->bs_nexttbtt;
2283 ath_dbg(common, BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2284 ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
2285 ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
2286 ath_dbg(common, BEACON, "DTIM period %d\n", dtimperiod);
2288 ENABLE_REGWRITE_BUFFER(ah);
2290 REG_WRITE(ah, AR_NEXT_DTIM,
2291 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
2292 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
2294 REG_WRITE(ah, AR_SLEEP1,
2295 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2296 | AR_SLEEP1_ASSUME_DTIM);
2298 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2299 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2301 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2303 REG_WRITE(ah, AR_SLEEP2,
2304 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2306 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
2307 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
2309 REGWRITE_BUFFER_FLUSH(ah);
2311 REG_SET_BIT(ah, AR_TIMER_MODE,
2312 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2315 /* TSF Out of Range Threshold */
2316 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2318 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2320 /*******************/
2321 /* HW Capabilities */
2322 /*******************/
2324 static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
2326 eeprom_chainmask &= chip_chainmask;
2327 if (eeprom_chainmask)
2328 return eeprom_chainmask;
2330 return chip_chainmask;
2334 * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
2335 * @ah: the atheros hardware data structure
2337 * We enable DFS support upstream on chipsets which have passed a series
2338 * of tests. The testing requirements are going to be documented. Desired
2339 * test requirements are documented at:
2341 * http://wireless.kernel.org/en/users/Drivers/ath9k/dfs
2343 * Once a new chipset gets properly tested an individual commit can be used
2344 * to document the testing for DFS for that chipset.
2346 static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
2349 switch (ah->hw_version.macVersion) {
2350 /* AR9580 will likely be our first target to get testing on */
2351 case AR_SREV_VERSION_9580:
2357 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2359 struct ath9k_hw_capabilities *pCap = &ah->caps;
2360 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2361 struct ath_common *common = ath9k_hw_common(ah);
2362 unsigned int chip_chainmask;
2365 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
2367 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2368 regulatory->current_rd = eeval;
2370 if (ah->opmode != NL80211_IFTYPE_AP &&
2371 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2372 if (regulatory->current_rd == 0x64 ||
2373 regulatory->current_rd == 0x65)
2374 regulatory->current_rd += 5;
2375 else if (regulatory->current_rd == 0x41)
2376 regulatory->current_rd = 0x43;
2377 ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
2378 regulatory->current_rd);
2381 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2382 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
2384 "no band has been marked as supported in EEPROM\n");
2388 if (eeval & AR5416_OPFLAGS_11A)
2389 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
2391 if (eeval & AR5416_OPFLAGS_11G)
2392 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
2394 if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah))
2396 else if (AR_SREV_9462(ah))
2398 else if (!AR_SREV_9280_20_OR_LATER(ah))
2400 else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
2405 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2407 * For AR9271 we will temporarilly uses the rx chainmax as read from
2410 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2411 !(eeval & AR5416_OPFLAGS_11A) &&
2412 !(AR_SREV_9271(ah)))
2413 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2414 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2415 else if (AR_SREV_9100(ah))
2416 pCap->rx_chainmask = 0x7;
2418 /* Use rx_chainmask from EEPROM. */
2419 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2421 pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
2422 pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
2423 ah->txchainmask = pCap->tx_chainmask;
2424 ah->rxchainmask = pCap->rx_chainmask;
2426 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2428 /* enable key search for every frame in an aggregate */
2429 if (AR_SREV_9300_20_OR_LATER(ah))
2430 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
2432 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
2434 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
2435 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2437 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2439 if (AR_SREV_9271(ah))
2440 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2441 else if (AR_DEVID_7010(ah))
2442 pCap->num_gpio_pins = AR7010_NUM_GPIO;
2443 else if (AR_SREV_9300_20_OR_LATER(ah))
2444 pCap->num_gpio_pins = AR9300_NUM_GPIO;
2445 else if (AR_SREV_9287_11_OR_LATER(ah))
2446 pCap->num_gpio_pins = AR9287_NUM_GPIO;
2447 else if (AR_SREV_9285_12_OR_LATER(ah))
2448 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2449 else if (AR_SREV_9280_20_OR_LATER(ah))
2450 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2452 pCap->num_gpio_pins = AR_NUM_GPIO;
2454 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
2455 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2457 pCap->rts_aggr_limit = (8 * 1024);
2459 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2460 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2461 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2463 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2464 ah->rfkill_polarity =
2465 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2467 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2470 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
2471 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2473 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2475 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2476 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2478 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2480 if (AR_SREV_9300_20_OR_LATER(ah)) {
2481 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
2482 if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah))
2483 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
2485 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2486 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2487 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2488 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2489 pCap->txs_len = sizeof(struct ar9003_txs);
2490 if (!ah->config.paprd_disable &&
2491 ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
2492 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
2494 pCap->tx_desc_len = sizeof(struct ath_desc);
2495 if (AR_SREV_9280_20(ah))
2496 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
2499 if (AR_SREV_9300_20_OR_LATER(ah))
2500 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
2502 if (AR_SREV_9300_20_OR_LATER(ah))
2503 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
2505 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
2506 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
2508 if (AR_SREV_9285(ah))
2509 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
2511 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2512 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
2513 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2515 if (AR_SREV_9300_20_OR_LATER(ah)) {
2516 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
2517 pCap->hw_caps |= ATH9K_HW_CAP_APM;
2521 if (AR_SREV_9330(ah) || AR_SREV_9485(ah)) {
2522 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2524 * enable the diversity-combining algorithm only when
2525 * both enable_lna_div and enable_fast_div are set
2526 * Table for Diversity
2527 * ant_div_alt_lnaconf bit 0-1
2528 * ant_div_main_lnaconf bit 2-3
2529 * ant_div_alt_gaintb bit 4
2530 * ant_div_main_gaintb bit 5
2531 * enable_ant_div_lnadiv bit 6
2532 * enable_ant_fast_div bit 7
2534 if ((ant_div_ctl1 >> 0x6) == 0x3)
2535 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2538 if (AR_SREV_9485_10(ah)) {
2539 pCap->pcie_lcr_extsync_en = true;
2540 pCap->pcie_lcr_offset = 0x80;
2543 if (ath9k_hw_dfs_tested(ah))
2544 pCap->hw_caps |= ATH9K_HW_CAP_DFS;
2546 tx_chainmask = pCap->tx_chainmask;
2547 rx_chainmask = pCap->rx_chainmask;
2548 while (tx_chainmask || rx_chainmask) {
2549 if (tx_chainmask & BIT(0))
2550 pCap->max_txchains++;
2551 if (rx_chainmask & BIT(0))
2552 pCap->max_rxchains++;
2558 if (AR_SREV_9300_20_OR_LATER(ah)) {
2559 ah->enabled_cals |= TX_IQ_CAL;
2560 if (AR_SREV_9485_OR_LATER(ah))
2561 ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
2564 if (AR_SREV_9462(ah)) {
2566 if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
2567 pCap->hw_caps |= ATH9K_HW_CAP_MCI;
2569 if (AR_SREV_9462_20(ah))
2570 pCap->hw_caps |= ATH9K_HW_CAP_RTT;
2578 /****************************/
2579 /* GPIO / RFKILL / Antennae */
2580 /****************************/
2582 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2586 u32 gpio_shift, tmp;
2589 addr = AR_GPIO_OUTPUT_MUX3;
2591 addr = AR_GPIO_OUTPUT_MUX2;
2593 addr = AR_GPIO_OUTPUT_MUX1;
2595 gpio_shift = (gpio % 6) * 5;
2597 if (AR_SREV_9280_20_OR_LATER(ah)
2598 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2599 REG_RMW(ah, addr, (type << gpio_shift),
2600 (0x1f << gpio_shift));
2602 tmp = REG_READ(ah, addr);
2603 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2604 tmp &= ~(0x1f << gpio_shift);
2605 tmp |= (type << gpio_shift);
2606 REG_WRITE(ah, addr, tmp);
2610 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2614 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2616 if (AR_DEVID_7010(ah)) {
2618 REG_RMW(ah, AR7010_GPIO_OE,
2619 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2620 (AR7010_GPIO_OE_MASK << gpio_shift));
2624 gpio_shift = gpio << 1;
2627 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2628 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2630 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2632 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2634 #define MS_REG_READ(x, y) \
2635 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2637 if (gpio >= ah->caps.num_gpio_pins)
2640 if (AR_DEVID_7010(ah)) {
2642 val = REG_READ(ah, AR7010_GPIO_IN);
2643 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2644 } else if (AR_SREV_9300_20_OR_LATER(ah))
2645 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2646 AR_GPIO_BIT(gpio)) != 0;
2647 else if (AR_SREV_9271(ah))
2648 return MS_REG_READ(AR9271, gpio) != 0;
2649 else if (AR_SREV_9287_11_OR_LATER(ah))
2650 return MS_REG_READ(AR9287, gpio) != 0;
2651 else if (AR_SREV_9285_12_OR_LATER(ah))
2652 return MS_REG_READ(AR9285, gpio) != 0;
2653 else if (AR_SREV_9280_20_OR_LATER(ah))
2654 return MS_REG_READ(AR928X, gpio) != 0;
2656 return MS_REG_READ(AR, gpio) != 0;
2658 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2660 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2665 if (AR_DEVID_7010(ah)) {
2667 REG_RMW(ah, AR7010_GPIO_OE,
2668 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2669 (AR7010_GPIO_OE_MASK << gpio_shift));
2673 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2674 gpio_shift = 2 * gpio;
2677 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2678 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2680 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2682 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2684 if (AR_DEVID_7010(ah)) {
2686 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2691 if (AR_SREV_9271(ah))
2694 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2697 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2699 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2701 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2703 EXPORT_SYMBOL(ath9k_hw_setantenna);
2705 /*********************/
2706 /* General Operation */
2707 /*********************/
2709 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2711 u32 bits = REG_READ(ah, AR_RX_FILTER);
2712 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2714 if (phybits & AR_PHY_ERR_RADAR)
2715 bits |= ATH9K_RX_FILTER_PHYRADAR;
2716 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2717 bits |= ATH9K_RX_FILTER_PHYERR;
2721 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2723 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2727 ENABLE_REGWRITE_BUFFER(ah);
2729 if (AR_SREV_9462(ah))
2730 bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
2732 REG_WRITE(ah, AR_RX_FILTER, bits);
2735 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2736 phybits |= AR_PHY_ERR_RADAR;
2737 if (bits & ATH9K_RX_FILTER_PHYERR)
2738 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2739 REG_WRITE(ah, AR_PHY_ERR, phybits);
2742 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2744 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2746 REGWRITE_BUFFER_FLUSH(ah);
2748 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2750 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2752 if (ath9k_hw_mci_is_enabled(ah))
2753 ar9003_mci_bt_gain_ctrl(ah);
2755 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2758 ath9k_hw_init_pll(ah, NULL);
2759 ah->htc_reset_init = true;
2762 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2764 bool ath9k_hw_disable(struct ath_hw *ah)
2766 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2769 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2772 ath9k_hw_init_pll(ah, NULL);
2775 EXPORT_SYMBOL(ath9k_hw_disable);
2777 static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
2779 enum eeprom_param gain_param;
2781 if (IS_CHAN_2GHZ(chan))
2782 gain_param = EEP_ANTENNA_GAIN_2G;
2784 gain_param = EEP_ANTENNA_GAIN_5G;
2786 return ah->eep_ops->get_eeprom(ah, gain_param);
2789 void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
2792 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2793 struct ieee80211_channel *channel;
2794 int chan_pwr, new_pwr, max_gain;
2795 int ant_gain, ant_reduction = 0;
2800 channel = chan->chan;
2801 chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
2802 new_pwr = min_t(int, chan_pwr, reg->power_limit);
2803 max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
2805 ant_gain = get_antenna_gain(ah, chan);
2806 if (ant_gain > max_gain)
2807 ant_reduction = ant_gain - max_gain;
2809 ah->eep_ops->set_txpower(ah, chan,
2810 ath9k_regd_get_ctl(reg, chan),
2811 ant_reduction, new_pwr, test);
2814 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2816 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2817 struct ath9k_channel *chan = ah->curchan;
2818 struct ieee80211_channel *channel = chan->chan;
2820 reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
2822 channel->max_power = MAX_RATE_POWER / 2;
2824 ath9k_hw_apply_txpower(ah, chan, test);
2827 channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
2829 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2831 void ath9k_hw_setopmode(struct ath_hw *ah)
2833 ath9k_hw_set_operating_mode(ah, ah->opmode);
2835 EXPORT_SYMBOL(ath9k_hw_setopmode);
2837 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2839 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2840 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2842 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2844 void ath9k_hw_write_associd(struct ath_hw *ah)
2846 struct ath_common *common = ath9k_hw_common(ah);
2848 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2849 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2850 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2852 EXPORT_SYMBOL(ath9k_hw_write_associd);
2854 #define ATH9K_MAX_TSF_READ 10
2856 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2858 u32 tsf_lower, tsf_upper1, tsf_upper2;
2861 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2862 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2863 tsf_lower = REG_READ(ah, AR_TSF_L32);
2864 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2865 if (tsf_upper2 == tsf_upper1)
2867 tsf_upper1 = tsf_upper2;
2870 WARN_ON( i == ATH9K_MAX_TSF_READ );
2872 return (((u64)tsf_upper1 << 32) | tsf_lower);
2874 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2876 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2878 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2879 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2881 EXPORT_SYMBOL(ath9k_hw_settsf64);
2883 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2885 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2886 AH_TSF_WRITE_TIMEOUT))
2887 ath_dbg(ath9k_hw_common(ah), RESET,
2888 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2890 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2892 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2894 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)
2897 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2899 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2901 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2903 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2905 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2908 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2909 macmode = AR_2040_JOINED_RX_CLEAR;
2913 REG_WRITE(ah, AR_2040_MODE, macmode);
2916 /* HW Generic timers configuration */
2918 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2920 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2921 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2922 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2923 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2924 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2925 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2926 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2927 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2928 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2929 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2930 AR_NDP2_TIMER_MODE, 0x0002},
2931 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2932 AR_NDP2_TIMER_MODE, 0x0004},
2933 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2934 AR_NDP2_TIMER_MODE, 0x0008},
2935 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2936 AR_NDP2_TIMER_MODE, 0x0010},
2937 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2938 AR_NDP2_TIMER_MODE, 0x0020},
2939 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2940 AR_NDP2_TIMER_MODE, 0x0040},
2941 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2942 AR_NDP2_TIMER_MODE, 0x0080}
2945 /* HW generic timer primitives */
2947 /* compute and clear index of rightmost 1 */
2948 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2958 return timer_table->gen_timer_index[b];
2961 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2963 return REG_READ(ah, AR_TSF_L32);
2965 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2967 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2968 void (*trigger)(void *),
2969 void (*overflow)(void *),
2973 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2974 struct ath_gen_timer *timer;
2976 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2978 if (timer == NULL) {
2979 ath_err(ath9k_hw_common(ah),
2980 "Failed to allocate memory for hw timer[%d]\n",
2985 /* allocate a hardware generic timer slot */
2986 timer_table->timers[timer_index] = timer;
2987 timer->index = timer_index;
2988 timer->trigger = trigger;
2989 timer->overflow = overflow;
2994 EXPORT_SYMBOL(ath_gen_timer_alloc);
2996 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2997 struct ath_gen_timer *timer,
3001 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3002 u32 tsf, timer_next;
3004 BUG_ON(!timer_period);
3006 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
3008 tsf = ath9k_hw_gettsf32(ah);
3010 timer_next = tsf + trig_timeout;
3012 ath_dbg(ath9k_hw_common(ah), HWTIMER,
3013 "current tsf %x period %x timer_next %x\n",
3014 tsf, timer_period, timer_next);
3017 * Program generic timer registers
3019 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
3021 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
3023 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3024 gen_tmr_configuration[timer->index].mode_mask);
3026 if (AR_SREV_9462(ah)) {
3028 * Starting from AR9462, each generic timer can select which tsf
3029 * to use. But we still follow the old rule, 0 - 7 use tsf and
3032 if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
3033 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3034 (1 << timer->index));
3036 REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3037 (1 << timer->index));
3040 /* Enable both trigger and thresh interrupt masks */
3041 REG_SET_BIT(ah, AR_IMR_S5,
3042 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3043 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3045 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
3047 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
3049 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3051 if ((timer->index < AR_FIRST_NDP_TIMER) ||
3052 (timer->index >= ATH_MAX_GEN_TIMER)) {
3056 /* Clear generic timer enable bits. */
3057 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3058 gen_tmr_configuration[timer->index].mode_mask);
3060 /* Disable both trigger and thresh interrupt masks */
3061 REG_CLR_BIT(ah, AR_IMR_S5,
3062 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3063 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3065 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
3067 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
3069 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
3071 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3073 /* free the hardware generic timer slot */
3074 timer_table->timers[timer->index] = NULL;
3077 EXPORT_SYMBOL(ath_gen_timer_free);
3080 * Generic Timer Interrupts handling
3082 void ath_gen_timer_isr(struct ath_hw *ah)
3084 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3085 struct ath_gen_timer *timer;
3086 struct ath_common *common = ath9k_hw_common(ah);
3087 u32 trigger_mask, thresh_mask, index;
3089 /* get hardware generic timer interrupt status */
3090 trigger_mask = ah->intr_gen_timer_trigger;
3091 thresh_mask = ah->intr_gen_timer_thresh;
3092 trigger_mask &= timer_table->timer_mask.val;
3093 thresh_mask &= timer_table->timer_mask.val;
3095 trigger_mask &= ~thresh_mask;
3097 while (thresh_mask) {
3098 index = rightmost_index(timer_table, &thresh_mask);
3099 timer = timer_table->timers[index];
3101 ath_dbg(common, HWTIMER, "TSF overflow for Gen timer %d\n",
3103 timer->overflow(timer->arg);
3106 while (trigger_mask) {
3107 index = rightmost_index(timer_table, &trigger_mask);
3108 timer = timer_table->timers[index];
3110 ath_dbg(common, HWTIMER,
3111 "Gen timer[%d] trigger\n", index);
3112 timer->trigger(timer->arg);
3115 EXPORT_SYMBOL(ath_gen_timer_isr);
3124 } ath_mac_bb_names[] = {
3125 /* Devices with external radios */
3126 { AR_SREV_VERSION_5416_PCI, "5416" },
3127 { AR_SREV_VERSION_5416_PCIE, "5418" },
3128 { AR_SREV_VERSION_9100, "9100" },
3129 { AR_SREV_VERSION_9160, "9160" },
3130 /* Single-chip solutions */
3131 { AR_SREV_VERSION_9280, "9280" },
3132 { AR_SREV_VERSION_9285, "9285" },
3133 { AR_SREV_VERSION_9287, "9287" },
3134 { AR_SREV_VERSION_9271, "9271" },
3135 { AR_SREV_VERSION_9300, "9300" },
3136 { AR_SREV_VERSION_9330, "9330" },
3137 { AR_SREV_VERSION_9340, "9340" },
3138 { AR_SREV_VERSION_9485, "9485" },
3139 { AR_SREV_VERSION_9462, "9462" },
3142 /* For devices with external radios */
3146 } ath_rf_names[] = {
3148 { AR_RAD5133_SREV_MAJOR, "5133" },
3149 { AR_RAD5122_SREV_MAJOR, "5122" },
3150 { AR_RAD2133_SREV_MAJOR, "2133" },
3151 { AR_RAD2122_SREV_MAJOR, "2122" }
3155 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3157 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3161 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3162 if (ath_mac_bb_names[i].version == mac_bb_version) {
3163 return ath_mac_bb_names[i].name;
3171 * Return the RF name. "????" is returned if the RF is unknown.
3172 * Used for devices with external radios.
3174 static const char *ath9k_hw_rf_name(u16 rf_version)
3178 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3179 if (ath_rf_names[i].version == rf_version) {
3180 return ath_rf_names[i].name;
3187 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3191 /* chipsets >= AR9280 are single-chip */
3192 if (AR_SREV_9280_20_OR_LATER(ah)) {
3193 used = snprintf(hw_name, len,
3194 "Atheros AR%s Rev:%x",
3195 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3196 ah->hw_version.macRev);
3199 used = snprintf(hw_name, len,
3200 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3201 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3202 ah->hw_version.macRev,
3203 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
3204 AR_RADIO_SREV_MAJOR)),
3205 ah->hw_version.phyRev);
3208 hw_name[used] = '\0';
3210 EXPORT_SYMBOL(ath9k_hw_name);