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);
345 case AR9300_DEVID_QCA955X:
346 ah->hw_version.macVersion = AR_SREV_VERSION_9550;
350 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
353 val = REG_READ(ah, AR_SREV);
354 ah->hw_version.macVersion =
355 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
356 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
358 if (AR_SREV_9462(ah))
359 ah->is_pciexpress = true;
361 ah->is_pciexpress = (val &
362 AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
364 if (!AR_SREV_9100(ah))
365 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
367 ah->hw_version.macRev = val & AR_SREV_REVISION;
369 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
370 ah->is_pciexpress = true;
374 /************************************/
375 /* HW Attach, Detach, Init Routines */
376 /************************************/
378 static void ath9k_hw_disablepcie(struct ath_hw *ah)
380 if (!AR_SREV_5416(ah))
383 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
384 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
385 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
386 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
387 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
388 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
389 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
390 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
391 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
393 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
396 /* This should work for all families including legacy */
397 static bool ath9k_hw_chip_test(struct ath_hw *ah)
399 struct ath_common *common = ath9k_hw_common(ah);
400 u32 regAddr[2] = { AR_STA_ID0 };
402 static const u32 patternData[4] = {
403 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
407 if (!AR_SREV_9300_20_OR_LATER(ah)) {
409 regAddr[1] = AR_PHY_BASE + (8 << 2);
413 for (i = 0; i < loop_max; i++) {
414 u32 addr = regAddr[i];
417 regHold[i] = REG_READ(ah, addr);
418 for (j = 0; j < 0x100; j++) {
419 wrData = (j << 16) | j;
420 REG_WRITE(ah, addr, wrData);
421 rdData = REG_READ(ah, addr);
422 if (rdData != wrData) {
424 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
425 addr, wrData, rdData);
429 for (j = 0; j < 4; j++) {
430 wrData = patternData[j];
431 REG_WRITE(ah, addr, wrData);
432 rdData = REG_READ(ah, addr);
433 if (wrData != rdData) {
435 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
436 addr, wrData, rdData);
440 REG_WRITE(ah, regAddr[i], regHold[i]);
447 static void ath9k_hw_init_config(struct ath_hw *ah)
451 ah->config.dma_beacon_response_time = 1;
452 ah->config.sw_beacon_response_time = 6;
453 ah->config.additional_swba_backoff = 0;
454 ah->config.ack_6mb = 0x0;
455 ah->config.cwm_ignore_extcca = 0;
456 ah->config.pcie_clock_req = 0;
457 ah->config.pcie_waen = 0;
458 ah->config.analog_shiftreg = 1;
459 ah->config.enable_ani = true;
461 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
462 ah->config.spurchans[i][0] = AR_NO_SPUR;
463 ah->config.spurchans[i][1] = AR_NO_SPUR;
466 /* PAPRD needs some more work to be enabled */
467 ah->config.paprd_disable = 1;
469 ah->config.rx_intr_mitigation = true;
470 ah->config.pcieSerDesWrite = true;
473 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
474 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
475 * This means we use it for all AR5416 devices, and the few
476 * minor PCI AR9280 devices out there.
478 * Serialization is required because these devices do not handle
479 * well the case of two concurrent reads/writes due to the latency
480 * involved. During one read/write another read/write can be issued
481 * on another CPU while the previous read/write may still be working
482 * on our hardware, if we hit this case the hardware poops in a loop.
483 * We prevent this by serializing reads and writes.
485 * This issue is not present on PCI-Express devices or pre-AR5416
486 * devices (legacy, 802.11abg).
488 if (num_possible_cpus() > 1)
489 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
492 static void ath9k_hw_init_defaults(struct ath_hw *ah)
494 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
496 regulatory->country_code = CTRY_DEFAULT;
497 regulatory->power_limit = MAX_RATE_POWER;
499 ah->hw_version.magic = AR5416_MAGIC;
500 ah->hw_version.subvendorid = 0;
503 ah->sta_id1_defaults =
504 AR_STA_ID1_CRPT_MIC_ENABLE |
505 AR_STA_ID1_MCAST_KSRCH;
506 if (AR_SREV_9100(ah))
507 ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
508 ah->slottime = ATH9K_SLOT_TIME_9;
509 ah->globaltxtimeout = (u32) -1;
510 ah->power_mode = ATH9K_PM_UNDEFINED;
511 ah->htc_reset_init = true;
514 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
516 struct ath_common *common = ath9k_hw_common(ah);
520 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
523 for (i = 0; i < 3; i++) {
524 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
526 common->macaddr[2 * i] = eeval >> 8;
527 common->macaddr[2 * i + 1] = eeval & 0xff;
529 if (sum == 0 || sum == 0xffff * 3)
530 return -EADDRNOTAVAIL;
535 static int ath9k_hw_post_init(struct ath_hw *ah)
537 struct ath_common *common = ath9k_hw_common(ah);
540 if (common->bus_ops->ath_bus_type != ATH_USB) {
541 if (!ath9k_hw_chip_test(ah))
545 if (!AR_SREV_9300_20_OR_LATER(ah)) {
546 ecode = ar9002_hw_rf_claim(ah);
551 ecode = ath9k_hw_eeprom_init(ah);
555 ath_dbg(ath9k_hw_common(ah), CONFIG, "Eeprom VER: %d, REV: %d\n",
556 ah->eep_ops->get_eeprom_ver(ah),
557 ah->eep_ops->get_eeprom_rev(ah));
559 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
561 ath_err(ath9k_hw_common(ah),
562 "Failed allocating banks for external radio\n");
563 ath9k_hw_rf_free_ext_banks(ah);
567 if (ah->config.enable_ani) {
568 ath9k_hw_ani_setup(ah);
569 ath9k_hw_ani_init(ah);
575 static void ath9k_hw_attach_ops(struct ath_hw *ah)
577 if (AR_SREV_9300_20_OR_LATER(ah))
578 ar9003_hw_attach_ops(ah);
580 ar9002_hw_attach_ops(ah);
583 /* Called for all hardware families */
584 static int __ath9k_hw_init(struct ath_hw *ah)
586 struct ath_common *common = ath9k_hw_common(ah);
589 ath9k_hw_read_revisions(ah);
592 * Read back AR_WA into a permanent copy and set bits 14 and 17.
593 * We need to do this to avoid RMW of this register. We cannot
594 * read the reg when chip is asleep.
596 ah->WARegVal = REG_READ(ah, AR_WA);
597 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
598 AR_WA_ASPM_TIMER_BASED_DISABLE);
600 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
601 ath_err(common, "Couldn't reset chip\n");
605 if (AR_SREV_9462(ah))
606 ah->WARegVal &= ~AR_WA_D3_L1_DISABLE;
608 ath9k_hw_init_defaults(ah);
609 ath9k_hw_init_config(ah);
611 ath9k_hw_attach_ops(ah);
613 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
614 ath_err(common, "Couldn't wakeup chip\n");
618 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
619 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
620 ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
621 !ah->is_pciexpress)) {
622 ah->config.serialize_regmode =
625 ah->config.serialize_regmode =
630 ath_dbg(common, RESET, "serialize_regmode is %d\n",
631 ah->config.serialize_regmode);
633 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
634 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
636 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
638 switch (ah->hw_version.macVersion) {
639 case AR_SREV_VERSION_5416_PCI:
640 case AR_SREV_VERSION_5416_PCIE:
641 case AR_SREV_VERSION_9160:
642 case AR_SREV_VERSION_9100:
643 case AR_SREV_VERSION_9280:
644 case AR_SREV_VERSION_9285:
645 case AR_SREV_VERSION_9287:
646 case AR_SREV_VERSION_9271:
647 case AR_SREV_VERSION_9300:
648 case AR_SREV_VERSION_9330:
649 case AR_SREV_VERSION_9485:
650 case AR_SREV_VERSION_9340:
651 case AR_SREV_VERSION_9462:
652 case AR_SREV_VERSION_9550:
656 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
657 ah->hw_version.macVersion, ah->hw_version.macRev);
661 if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
662 AR_SREV_9330(ah) || AR_SREV_9550(ah))
663 ah->is_pciexpress = false;
665 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
666 ath9k_hw_init_cal_settings(ah);
668 ah->ani_function = ATH9K_ANI_ALL;
669 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
670 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
671 if (!AR_SREV_9300_20_OR_LATER(ah))
672 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
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_QCA955X:
731 case AR9300_DEVID_AR9580:
732 case AR9300_DEVID_AR9462:
735 if (common->bus_ops->ath_bus_type == ATH_USB)
737 ath_err(common, "Hardware device ID 0x%04x not supported\n",
738 ah->hw_version.devid);
742 ret = __ath9k_hw_init(ah);
745 "Unable to initialize hardware; initialization status: %d\n",
752 EXPORT_SYMBOL(ath9k_hw_init);
754 static void ath9k_hw_init_qos(struct ath_hw *ah)
756 ENABLE_REGWRITE_BUFFER(ah);
758 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
759 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
761 REG_WRITE(ah, AR_QOS_NO_ACK,
762 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
763 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
764 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
766 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
767 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
768 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
769 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
770 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
772 REGWRITE_BUFFER_FLUSH(ah);
775 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
777 struct ath_common *common = ath9k_hw_common(ah);
780 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
782 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
784 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
788 if (WARN_ON_ONCE(i >= 100)) {
789 ath_err(common, "PLL4 meaurement not done\n");
796 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
798 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
800 static void ath9k_hw_init_pll(struct ath_hw *ah,
801 struct ath9k_channel *chan)
805 if (AR_SREV_9485(ah)) {
807 /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
808 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
809 AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
810 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
811 AR_CH0_DPLL2_KD, 0x40);
812 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
813 AR_CH0_DPLL2_KI, 0x4);
815 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
816 AR_CH0_BB_DPLL1_REFDIV, 0x5);
817 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
818 AR_CH0_BB_DPLL1_NINI, 0x58);
819 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
820 AR_CH0_BB_DPLL1_NFRAC, 0x0);
822 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
823 AR_CH0_BB_DPLL2_OUTDIV, 0x1);
824 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
825 AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
826 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
827 AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
829 /* program BB PLL phase_shift to 0x6 */
830 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
831 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
833 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
834 AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
836 } else if (AR_SREV_9330(ah)) {
837 u32 ddr_dpll2, pll_control2, kd;
839 if (ah->is_clk_25mhz) {
840 ddr_dpll2 = 0x18e82f01;
841 pll_control2 = 0xe04a3d;
844 ddr_dpll2 = 0x19e82f01;
845 pll_control2 = 0x886666;
849 /* program DDR PLL ki and kd value */
850 REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
852 /* program DDR PLL phase_shift */
853 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
854 AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
856 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
859 /* program refdiv, nint, frac to RTC register */
860 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
862 /* program BB PLL kd and ki value */
863 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
864 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
866 /* program BB PLL phase_shift */
867 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
868 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
869 } else if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
870 u32 regval, pll2_divint, pll2_divfrac, refdiv;
872 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
875 REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
878 if (ah->is_clk_25mhz) {
880 pll2_divfrac = 0x1eb85;
883 if (AR_SREV_9340(ah)) {
889 pll2_divfrac = 0x26666;
894 regval = REG_READ(ah, AR_PHY_PLL_MODE);
895 regval |= (0x1 << 16);
896 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
899 REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
900 (pll2_divint << 18) | pll2_divfrac);
903 regval = REG_READ(ah, AR_PHY_PLL_MODE);
904 if (AR_SREV_9340(ah))
905 regval = (regval & 0x80071fff) | (0x1 << 30) |
906 (0x1 << 13) | (0x4 << 26) | (0x18 << 19);
908 regval = (regval & 0x80071fff) | (0x3 << 30) |
909 (0x1 << 13) | (0x4 << 26) | (0x60 << 19);
910 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
911 REG_WRITE(ah, AR_PHY_PLL_MODE,
912 REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
916 pll = ath9k_hw_compute_pll_control(ah, chan);
918 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
920 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
924 /* Switch the core clock for ar9271 to 117Mhz */
925 if (AR_SREV_9271(ah)) {
927 REG_WRITE(ah, 0x50040, 0x304);
930 udelay(RTC_PLL_SETTLE_DELAY);
932 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
934 if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
935 if (ah->is_clk_25mhz) {
936 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
937 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
938 REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
940 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
941 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
942 REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
948 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
949 enum nl80211_iftype opmode)
951 u32 sync_default = AR_INTR_SYNC_DEFAULT;
952 u32 imr_reg = AR_IMR_TXERR |
958 if (AR_SREV_9340(ah) || AR_SREV_9550(ah))
959 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
961 if (AR_SREV_9300_20_OR_LATER(ah)) {
962 imr_reg |= AR_IMR_RXOK_HP;
963 if (ah->config.rx_intr_mitigation)
964 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
966 imr_reg |= AR_IMR_RXOK_LP;
969 if (ah->config.rx_intr_mitigation)
970 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
972 imr_reg |= AR_IMR_RXOK;
975 if (ah->config.tx_intr_mitigation)
976 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
978 imr_reg |= AR_IMR_TXOK;
980 if (opmode == NL80211_IFTYPE_AP)
981 imr_reg |= AR_IMR_MIB;
983 ENABLE_REGWRITE_BUFFER(ah);
985 REG_WRITE(ah, AR_IMR, imr_reg);
986 ah->imrs2_reg |= AR_IMR_S2_GTT;
987 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
989 if (!AR_SREV_9100(ah)) {
990 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
991 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
992 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
995 REGWRITE_BUFFER_FLUSH(ah);
997 if (AR_SREV_9300_20_OR_LATER(ah)) {
998 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
999 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
1000 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
1001 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
1005 static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
1007 u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
1008 val = min(val, (u32) 0xFFFF);
1009 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
1012 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
1014 u32 val = ath9k_hw_mac_to_clks(ah, us);
1015 val = min(val, (u32) 0xFFFF);
1016 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
1019 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
1021 u32 val = ath9k_hw_mac_to_clks(ah, us);
1022 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
1023 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
1026 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
1028 u32 val = ath9k_hw_mac_to_clks(ah, us);
1029 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
1030 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
1033 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
1036 ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
1038 ah->globaltxtimeout = (u32) -1;
1041 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
1042 ah->globaltxtimeout = tu;
1047 void ath9k_hw_init_global_settings(struct ath_hw *ah)
1049 struct ath_common *common = ath9k_hw_common(ah);
1050 struct ieee80211_conf *conf = &common->hw->conf;
1051 const struct ath9k_channel *chan = ah->curchan;
1052 int acktimeout, ctstimeout, ack_offset = 0;
1055 int rx_lat = 0, tx_lat = 0, eifs = 0;
1058 ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
1064 if (ah->misc_mode != 0)
1065 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
1067 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1073 if (IS_CHAN_5GHZ(chan))
1078 if (IS_CHAN_HALF_RATE(chan)) {
1082 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1088 } else if (IS_CHAN_QUARTER_RATE(chan)) {
1090 rx_lat = (rx_lat * 4) - 1;
1092 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1099 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1100 eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
1101 reg = AR_USEC_ASYNC_FIFO;
1103 eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
1105 reg = REG_READ(ah, AR_USEC);
1107 rx_lat = MS(reg, AR_USEC_RX_LAT);
1108 tx_lat = MS(reg, AR_USEC_TX_LAT);
1110 slottime = ah->slottime;
1113 /* As defined by IEEE 802.11-2007 17.3.8.6 */
1114 acktimeout = slottime + sifstime + 3 * ah->coverage_class + ack_offset;
1115 ctstimeout = acktimeout;
1118 * Workaround for early ACK timeouts, add an offset to match the
1119 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
1120 * This was initially only meant to work around an issue with delayed
1121 * BA frames in some implementations, but it has been found to fix ACK
1122 * timeout issues in other cases as well.
1124 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ &&
1125 !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
1126 acktimeout += 64 - sifstime - ah->slottime;
1127 ctstimeout += 48 - sifstime - ah->slottime;
1131 ath9k_hw_set_sifs_time(ah, sifstime);
1132 ath9k_hw_setslottime(ah, slottime);
1133 ath9k_hw_set_ack_timeout(ah, acktimeout);
1134 ath9k_hw_set_cts_timeout(ah, ctstimeout);
1135 if (ah->globaltxtimeout != (u32) -1)
1136 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
1138 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
1139 REG_RMW(ah, AR_USEC,
1140 (common->clockrate - 1) |
1141 SM(rx_lat, AR_USEC_RX_LAT) |
1142 SM(tx_lat, AR_USEC_TX_LAT),
1143 AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
1146 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
1148 void ath9k_hw_deinit(struct ath_hw *ah)
1150 struct ath_common *common = ath9k_hw_common(ah);
1152 if (common->state < ATH_HW_INITIALIZED)
1155 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1158 ath9k_hw_rf_free_ext_banks(ah);
1160 EXPORT_SYMBOL(ath9k_hw_deinit);
1166 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
1168 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
1170 if (IS_CHAN_B(chan))
1172 else if (IS_CHAN_G(chan))
1180 /****************************************/
1181 /* Reset and Channel Switching Routines */
1182 /****************************************/
1184 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
1186 struct ath_common *common = ath9k_hw_common(ah);
1188 ENABLE_REGWRITE_BUFFER(ah);
1191 * set AHB_MODE not to do cacheline prefetches
1193 if (!AR_SREV_9300_20_OR_LATER(ah))
1194 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
1197 * let mac dma reads be in 128 byte chunks
1199 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
1201 REGWRITE_BUFFER_FLUSH(ah);
1204 * Restore TX Trigger Level to its pre-reset value.
1205 * The initial value depends on whether aggregation is enabled, and is
1206 * adjusted whenever underruns are detected.
1208 if (!AR_SREV_9300_20_OR_LATER(ah))
1209 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
1211 ENABLE_REGWRITE_BUFFER(ah);
1214 * let mac dma writes be in 128 byte chunks
1216 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
1219 * Setup receive FIFO threshold to hold off TX activities
1221 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
1223 if (AR_SREV_9300_20_OR_LATER(ah)) {
1224 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
1225 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
1227 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
1228 ah->caps.rx_status_len);
1232 * reduce the number of usable entries in PCU TXBUF to avoid
1233 * wrap around issues.
1235 if (AR_SREV_9285(ah)) {
1236 /* For AR9285 the number of Fifos are reduced to half.
1237 * So set the usable tx buf size also to half to
1238 * avoid data/delimiter underruns
1240 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1241 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
1242 } else if (!AR_SREV_9271(ah)) {
1243 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1244 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
1247 REGWRITE_BUFFER_FLUSH(ah);
1249 if (AR_SREV_9300_20_OR_LATER(ah))
1250 ath9k_hw_reset_txstatus_ring(ah);
1253 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
1255 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
1256 u32 set = AR_STA_ID1_KSRCH_MODE;
1259 case NL80211_IFTYPE_ADHOC:
1260 case NL80211_IFTYPE_MESH_POINT:
1261 set |= AR_STA_ID1_ADHOC;
1262 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1264 case NL80211_IFTYPE_AP:
1265 set |= AR_STA_ID1_STA_AP;
1267 case NL80211_IFTYPE_STATION:
1268 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1271 if (!ah->is_monitoring)
1275 REG_RMW(ah, AR_STA_ID1, set, mask);
1278 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1279 u32 *coef_mantissa, u32 *coef_exponent)
1281 u32 coef_exp, coef_man;
1283 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1284 if ((coef_scaled >> coef_exp) & 0x1)
1287 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1289 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1291 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1292 *coef_exponent = coef_exp - 16;
1295 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1300 if (AR_SREV_9100(ah)) {
1301 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1302 AR_RTC_DERIVED_CLK_PERIOD, 1);
1303 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1306 ENABLE_REGWRITE_BUFFER(ah);
1308 if (AR_SREV_9300_20_OR_LATER(ah)) {
1309 REG_WRITE(ah, AR_WA, ah->WARegVal);
1313 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1314 AR_RTC_FORCE_WAKE_ON_INT);
1316 if (AR_SREV_9100(ah)) {
1317 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1318 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1320 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1322 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1323 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1325 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1328 if (!AR_SREV_9300_20_OR_LATER(ah))
1330 REG_WRITE(ah, AR_RC, val);
1332 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1333 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1335 rst_flags = AR_RTC_RC_MAC_WARM;
1336 if (type == ATH9K_RESET_COLD)
1337 rst_flags |= AR_RTC_RC_MAC_COLD;
1340 if (AR_SREV_9330(ah)) {
1345 * call external reset function to reset WMAC if:
1346 * - doing a cold reset
1347 * - we have pending frames in the TX queues
1350 for (i = 0; i < AR_NUM_QCU; i++) {
1351 npend = ath9k_hw_numtxpending(ah, i);
1356 if (ah->external_reset &&
1357 (npend || type == ATH9K_RESET_COLD)) {
1360 ath_dbg(ath9k_hw_common(ah), RESET,
1361 "reset MAC via external reset\n");
1363 reset_err = ah->external_reset();
1365 ath_err(ath9k_hw_common(ah),
1366 "External reset failed, err=%d\n",
1371 REG_WRITE(ah, AR_RTC_RESET, 1);
1375 if (ath9k_hw_mci_is_enabled(ah))
1376 ar9003_mci_check_gpm_offset(ah);
1378 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1380 REGWRITE_BUFFER_FLUSH(ah);
1384 REG_WRITE(ah, AR_RTC_RC, 0);
1385 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1386 ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
1390 if (!AR_SREV_9100(ah))
1391 REG_WRITE(ah, AR_RC, 0);
1393 if (AR_SREV_9100(ah))
1399 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1401 ENABLE_REGWRITE_BUFFER(ah);
1403 if (AR_SREV_9300_20_OR_LATER(ah)) {
1404 REG_WRITE(ah, AR_WA, ah->WARegVal);
1408 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1409 AR_RTC_FORCE_WAKE_ON_INT);
1411 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1412 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1414 REG_WRITE(ah, AR_RTC_RESET, 0);
1416 REGWRITE_BUFFER_FLUSH(ah);
1418 if (!AR_SREV_9300_20_OR_LATER(ah))
1421 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1422 REG_WRITE(ah, AR_RC, 0);
1424 REG_WRITE(ah, AR_RTC_RESET, 1);
1426 if (!ath9k_hw_wait(ah,
1431 ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
1435 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1438 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1442 if (AR_SREV_9300_20_OR_LATER(ah)) {
1443 REG_WRITE(ah, AR_WA, ah->WARegVal);
1447 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1448 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1451 case ATH9K_RESET_POWER_ON:
1452 ret = ath9k_hw_set_reset_power_on(ah);
1454 case ATH9K_RESET_WARM:
1455 case ATH9K_RESET_COLD:
1456 ret = ath9k_hw_set_reset(ah, type);
1465 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1466 struct ath9k_channel *chan)
1468 int reset_type = ATH9K_RESET_WARM;
1470 if (AR_SREV_9280(ah)) {
1471 if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1472 reset_type = ATH9K_RESET_POWER_ON;
1474 reset_type = ATH9K_RESET_COLD;
1477 if (!ath9k_hw_set_reset_reg(ah, reset_type))
1480 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1483 ah->chip_fullsleep = false;
1485 if (AR_SREV_9330(ah))
1486 ar9003_hw_internal_regulator_apply(ah);
1487 ath9k_hw_init_pll(ah, chan);
1488 ath9k_hw_set_rfmode(ah, chan);
1493 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1494 struct ath9k_channel *chan)
1496 struct ath_common *common = ath9k_hw_common(ah);
1499 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1500 bool band_switch, mode_diff;
1503 band_switch = (chan->channelFlags & (CHANNEL_2GHZ | CHANNEL_5GHZ)) !=
1504 (ah->curchan->channelFlags & (CHANNEL_2GHZ |
1506 mode_diff = (chan->chanmode != ah->curchan->chanmode);
1508 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1509 if (ath9k_hw_numtxpending(ah, qnum)) {
1510 ath_dbg(common, QUEUE,
1511 "Transmit frames pending on queue %d\n", qnum);
1516 if (!ath9k_hw_rfbus_req(ah)) {
1517 ath_err(common, "Could not kill baseband RX\n");
1521 if (edma && (band_switch || mode_diff)) {
1522 ath9k_hw_mark_phy_inactive(ah);
1525 ath9k_hw_init_pll(ah, NULL);
1527 if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
1528 ath_err(common, "Failed to do fast channel change\n");
1533 ath9k_hw_set_channel_regs(ah, chan);
1535 r = ath9k_hw_rf_set_freq(ah, chan);
1537 ath_err(common, "Failed to set channel\n");
1540 ath9k_hw_set_clockrate(ah);
1541 ath9k_hw_apply_txpower(ah, chan, false);
1542 ath9k_hw_rfbus_done(ah);
1544 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1545 ath9k_hw_set_delta_slope(ah, chan);
1547 ath9k_hw_spur_mitigate_freq(ah, chan);
1549 if (edma && (band_switch || mode_diff)) {
1550 ah->ah_flags |= AH_FASTCC;
1551 if (band_switch || ini_reloaded)
1552 ah->eep_ops->set_board_values(ah, chan);
1554 ath9k_hw_init_bb(ah, chan);
1556 if (band_switch || ini_reloaded)
1557 ath9k_hw_init_cal(ah, chan);
1558 ah->ah_flags &= ~AH_FASTCC;
1564 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1566 u32 gpio_mask = ah->gpio_mask;
1569 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1570 if (!(gpio_mask & 1))
1573 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1574 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1578 static bool ath9k_hw_check_dcs(u32 dma_dbg, u32 num_dcu_states,
1579 int *hang_state, int *hang_pos)
1581 static u32 dcu_chain_state[] = {5, 6, 9}; /* DCU chain stuck states */
1582 u32 chain_state, dcs_pos, i;
1584 for (dcs_pos = 0; dcs_pos < num_dcu_states; dcs_pos++) {
1585 chain_state = (dma_dbg >> (5 * dcs_pos)) & 0x1f;
1586 for (i = 0; i < 3; i++) {
1587 if (chain_state == dcu_chain_state[i]) {
1588 *hang_state = chain_state;
1589 *hang_pos = dcs_pos;
1597 #define DCU_COMPLETE_STATE 1
1598 #define DCU_COMPLETE_STATE_MASK 0x3
1599 #define NUM_STATUS_READS 50
1600 static bool ath9k_hw_detect_mac_hang(struct ath_hw *ah)
1602 u32 chain_state, comp_state, dcs_reg = AR_DMADBG_4;
1603 u32 i, hang_pos, hang_state, num_state = 6;
1605 comp_state = REG_READ(ah, AR_DMADBG_6);
1607 if ((comp_state & DCU_COMPLETE_STATE_MASK) != DCU_COMPLETE_STATE) {
1608 ath_dbg(ath9k_hw_common(ah), RESET,
1609 "MAC Hang signature not found at DCU complete\n");
1613 chain_state = REG_READ(ah, dcs_reg);
1614 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1615 goto hang_check_iter;
1617 dcs_reg = AR_DMADBG_5;
1619 chain_state = REG_READ(ah, dcs_reg);
1620 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1621 goto hang_check_iter;
1623 ath_dbg(ath9k_hw_common(ah), RESET,
1624 "MAC Hang signature 1 not found\n");
1628 ath_dbg(ath9k_hw_common(ah), RESET,
1629 "DCU registers: chain %08x complete %08x Hang: state %d pos %d\n",
1630 chain_state, comp_state, hang_state, hang_pos);
1632 for (i = 0; i < NUM_STATUS_READS; i++) {
1633 chain_state = REG_READ(ah, dcs_reg);
1634 chain_state = (chain_state >> (5 * hang_pos)) & 0x1f;
1635 comp_state = REG_READ(ah, AR_DMADBG_6);
1637 if (((comp_state & DCU_COMPLETE_STATE_MASK) !=
1638 DCU_COMPLETE_STATE) ||
1639 (chain_state != hang_state))
1643 ath_dbg(ath9k_hw_common(ah), RESET, "MAC Hang signature 1 found\n");
1648 bool ath9k_hw_check_alive(struct ath_hw *ah)
1653 if (AR_SREV_9300(ah))
1654 return !ath9k_hw_detect_mac_hang(ah);
1656 if (AR_SREV_9285_12_OR_LATER(ah))
1660 reg = REG_READ(ah, AR_OBS_BUS_1);
1662 if ((reg & 0x7E7FFFEF) == 0x00702400)
1665 switch (reg & 0x7E000B00) {
1673 } while (count-- > 0);
1677 EXPORT_SYMBOL(ath9k_hw_check_alive);
1680 * Fast channel change:
1681 * (Change synthesizer based on channel freq without resetting chip)
1685 * - Chip is just coming out of full sleep
1686 * - Channel to be set is same as current channel
1687 * - Channel flags are different, (eg.,moving from 2GHz to 5GHz channel)
1689 static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
1691 struct ath_common *common = ath9k_hw_common(ah);
1694 if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
1697 if (ah->chip_fullsleep)
1703 if (chan->channel == ah->curchan->channel)
1706 if ((ah->curchan->channelFlags | chan->channelFlags) &
1707 (CHANNEL_HALF | CHANNEL_QUARTER))
1710 if ((chan->channelFlags & CHANNEL_ALL) !=
1711 (ah->curchan->channelFlags & CHANNEL_ALL))
1714 if (!ath9k_hw_check_alive(ah))
1718 * For AR9462, make sure that calibration data for
1719 * re-using are present.
1721 if (AR_SREV_9462(ah) && (ah->caldata &&
1722 (!ah->caldata->done_txiqcal_once ||
1723 !ah->caldata->done_txclcal_once ||
1724 !ah->caldata->rtt_done)))
1727 ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
1728 ah->curchan->channel, chan->channel);
1730 ret = ath9k_hw_channel_change(ah, chan);
1734 ath9k_hw_loadnf(ah, ah->curchan);
1735 ath9k_hw_start_nfcal(ah, true);
1737 if (ath9k_hw_mci_is_enabled(ah))
1738 ar9003_mci_2g5g_switch(ah, false);
1740 if (AR_SREV_9271(ah))
1741 ar9002_hw_load_ani_reg(ah, chan);
1748 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1749 struct ath9k_hw_cal_data *caldata, bool fastcc)
1751 struct ath_common *common = ath9k_hw_common(ah);
1757 bool start_mci_reset = false;
1758 bool save_fullsleep = ah->chip_fullsleep;
1760 if (ath9k_hw_mci_is_enabled(ah)) {
1761 start_mci_reset = ar9003_mci_start_reset(ah, chan);
1762 if (start_mci_reset)
1766 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1769 if (ah->curchan && !ah->chip_fullsleep)
1770 ath9k_hw_getnf(ah, ah->curchan);
1772 ah->caldata = caldata;
1774 (chan->channel != caldata->channel ||
1775 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1776 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1777 /* Operating channel changed, reset channel calibration data */
1778 memset(caldata, 0, sizeof(*caldata));
1779 ath9k_init_nfcal_hist_buffer(ah, chan);
1781 ah->noise = ath9k_hw_getchan_noise(ah, chan);
1784 r = ath9k_hw_do_fastcc(ah, chan);
1789 if (ath9k_hw_mci_is_enabled(ah))
1790 ar9003_mci_stop_bt(ah, save_fullsleep);
1792 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1793 if (saveDefAntenna == 0)
1796 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1798 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1799 if (AR_SREV_9100(ah) ||
1800 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1801 tsf = ath9k_hw_gettsf64(ah);
1803 saveLedState = REG_READ(ah, AR_CFG_LED) &
1804 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1805 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1807 ath9k_hw_mark_phy_inactive(ah);
1809 ah->paprd_table_write_done = false;
1811 /* Only required on the first reset */
1812 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1814 AR9271_RESET_POWER_DOWN_CONTROL,
1815 AR9271_RADIO_RF_RST);
1819 if (!ath9k_hw_chip_reset(ah, chan)) {
1820 ath_err(common, "Chip reset failed\n");
1824 /* Only required on the first reset */
1825 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1826 ah->htc_reset_init = false;
1828 AR9271_RESET_POWER_DOWN_CONTROL,
1829 AR9271_GATE_MAC_CTL);
1835 ath9k_hw_settsf64(ah, tsf);
1837 if (AR_SREV_9280_20_OR_LATER(ah))
1838 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1840 if (!AR_SREV_9300_20_OR_LATER(ah))
1841 ar9002_hw_enable_async_fifo(ah);
1843 r = ath9k_hw_process_ini(ah, chan);
1847 if (ath9k_hw_mci_is_enabled(ah))
1848 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
1851 * Some AR91xx SoC devices frequently fail to accept TSF writes
1852 * right after the chip reset. When that happens, write a new
1853 * value after the initvals have been applied, with an offset
1854 * based on measured time difference
1856 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1858 ath9k_hw_settsf64(ah, tsf);
1861 /* Setup MFP options for CCMP */
1862 if (AR_SREV_9280_20_OR_LATER(ah)) {
1863 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1864 * frames when constructing CCMP AAD. */
1865 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1867 ah->sw_mgmt_crypto = false;
1868 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1869 /* Disable hardware crypto for management frames */
1870 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1871 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1872 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1873 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1874 ah->sw_mgmt_crypto = true;
1876 ah->sw_mgmt_crypto = true;
1878 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1879 ath9k_hw_set_delta_slope(ah, chan);
1881 ath9k_hw_spur_mitigate_freq(ah, chan);
1882 ah->eep_ops->set_board_values(ah, chan);
1884 ENABLE_REGWRITE_BUFFER(ah);
1886 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1887 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1889 | AR_STA_ID1_RTS_USE_DEF
1891 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1892 | ah->sta_id1_defaults);
1893 ath_hw_setbssidmask(common);
1894 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1895 ath9k_hw_write_associd(ah);
1896 REG_WRITE(ah, AR_ISR, ~0);
1897 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1899 REGWRITE_BUFFER_FLUSH(ah);
1901 ath9k_hw_set_operating_mode(ah, ah->opmode);
1903 r = ath9k_hw_rf_set_freq(ah, chan);
1907 ath9k_hw_set_clockrate(ah);
1909 ENABLE_REGWRITE_BUFFER(ah);
1911 for (i = 0; i < AR_NUM_DCU; i++)
1912 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1914 REGWRITE_BUFFER_FLUSH(ah);
1917 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1918 ath9k_hw_resettxqueue(ah, i);
1920 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1921 ath9k_hw_ani_cache_ini_regs(ah);
1922 ath9k_hw_init_qos(ah);
1924 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1925 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1927 ath9k_hw_init_global_settings(ah);
1929 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1930 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1931 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1932 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1933 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1934 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1935 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1938 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1940 ath9k_hw_set_dma(ah);
1942 if (!ath9k_hw_mci_is_enabled(ah))
1943 REG_WRITE(ah, AR_OBS, 8);
1945 if (ah->config.rx_intr_mitigation) {
1946 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1947 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1950 if (ah->config.tx_intr_mitigation) {
1951 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1952 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1955 ath9k_hw_init_bb(ah, chan);
1958 caldata->done_txiqcal_once = false;
1959 caldata->done_txclcal_once = false;
1961 if (!ath9k_hw_init_cal(ah, chan))
1964 if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
1967 ENABLE_REGWRITE_BUFFER(ah);
1969 ath9k_hw_restore_chainmask(ah);
1970 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1972 REGWRITE_BUFFER_FLUSH(ah);
1975 * For big endian systems turn on swapping for descriptors
1977 if (AR_SREV_9100(ah)) {
1979 mask = REG_READ(ah, AR_CFG);
1980 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1981 ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
1985 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1986 REG_WRITE(ah, AR_CFG, mask);
1987 ath_dbg(common, RESET, "Setting CFG 0x%x\n",
1988 REG_READ(ah, AR_CFG));
1991 if (common->bus_ops->ath_bus_type == ATH_USB) {
1992 /* Configure AR9271 target WLAN */
1993 if (AR_SREV_9271(ah))
1994 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1996 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1999 else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
2001 REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
2003 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
2007 if (ath9k_hw_btcoex_is_enabled(ah))
2008 ath9k_hw_btcoex_enable(ah);
2010 if (ath9k_hw_mci_is_enabled(ah))
2011 ar9003_mci_check_bt(ah);
2013 ath9k_hw_loadnf(ah, chan);
2014 ath9k_hw_start_nfcal(ah, true);
2016 if (AR_SREV_9300_20_OR_LATER(ah)) {
2017 ar9003_hw_bb_watchdog_config(ah);
2019 ar9003_hw_disable_phy_restart(ah);
2022 ath9k_hw_apply_gpio_override(ah);
2026 EXPORT_SYMBOL(ath9k_hw_reset);
2028 /******************************/
2029 /* Power Management (Chipset) */
2030 /******************************/
2033 * Notify Power Mgt is disabled in self-generated frames.
2034 * If requested, force chip to sleep.
2036 static void ath9k_set_power_sleep(struct ath_hw *ah)
2038 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2040 if (AR_SREV_9462(ah)) {
2041 REG_CLR_BIT(ah, AR_TIMER_MODE, 0xff);
2042 REG_CLR_BIT(ah, AR_NDP2_TIMER_MODE, 0xff);
2043 REG_CLR_BIT(ah, AR_SLP32_INC, 0xfffff);
2044 /* xxx Required for WLAN only case ? */
2045 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
2050 * Clear the RTC force wake bit to allow the
2051 * mac to go to sleep.
2053 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2055 if (ath9k_hw_mci_is_enabled(ah))
2058 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
2059 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
2061 /* Shutdown chip. Active low */
2062 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
2063 REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
2067 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
2068 if (AR_SREV_9300_20_OR_LATER(ah))
2069 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2073 * Notify Power Management is enabled in self-generating
2074 * frames. If request, set power mode of chip to
2075 * auto/normal. Duration in units of 128us (1/8 TU).
2077 static void ath9k_set_power_network_sleep(struct ath_hw *ah)
2079 struct ath9k_hw_capabilities *pCap = &ah->caps;
2081 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2083 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
2084 /* Set WakeOnInterrupt bit; clear ForceWake bit */
2085 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
2086 AR_RTC_FORCE_WAKE_ON_INT);
2089 /* When chip goes into network sleep, it could be waken
2090 * up by MCI_INT interrupt caused by BT's HW messages
2091 * (LNA_xxx, CONT_xxx) which chould be in a very fast
2092 * rate (~100us). This will cause chip to leave and
2093 * re-enter network sleep mode frequently, which in
2094 * consequence will have WLAN MCI HW to generate lots of
2095 * SYS_WAKING and SYS_SLEEPING messages which will make
2096 * BT CPU to busy to process.
2098 if (ath9k_hw_mci_is_enabled(ah))
2099 REG_CLR_BIT(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
2100 AR_MCI_INTERRUPT_RX_HW_MSG_MASK);
2102 * Clear the RTC force wake bit to allow the
2103 * mac to go to sleep.
2105 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2107 if (ath9k_hw_mci_is_enabled(ah))
2111 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
2112 if (AR_SREV_9300_20_OR_LATER(ah))
2113 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2116 static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
2121 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
2122 if (AR_SREV_9300_20_OR_LATER(ah)) {
2123 REG_WRITE(ah, AR_WA, ah->WARegVal);
2127 if ((REG_READ(ah, AR_RTC_STATUS) &
2128 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
2129 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
2132 if (!AR_SREV_9300_20_OR_LATER(ah))
2133 ath9k_hw_init_pll(ah, NULL);
2135 if (AR_SREV_9100(ah))
2136 REG_SET_BIT(ah, AR_RTC_RESET,
2139 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2140 AR_RTC_FORCE_WAKE_EN);
2143 if (ath9k_hw_mci_is_enabled(ah))
2144 ar9003_mci_set_power_awake(ah);
2146 for (i = POWER_UP_TIME / 50; i > 0; i--) {
2147 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
2148 if (val == AR_RTC_STATUS_ON)
2151 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2152 AR_RTC_FORCE_WAKE_EN);
2155 ath_err(ath9k_hw_common(ah),
2156 "Failed to wakeup in %uus\n",
2157 POWER_UP_TIME / 20);
2161 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2166 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
2168 struct ath_common *common = ath9k_hw_common(ah);
2170 static const char *modes[] = {
2177 if (ah->power_mode == mode)
2180 ath_dbg(common, RESET, "%s -> %s\n",
2181 modes[ah->power_mode], modes[mode]);
2184 case ATH9K_PM_AWAKE:
2185 status = ath9k_hw_set_power_awake(ah);
2187 case ATH9K_PM_FULL_SLEEP:
2188 if (ath9k_hw_mci_is_enabled(ah))
2189 ar9003_mci_set_full_sleep(ah);
2191 ath9k_set_power_sleep(ah);
2192 ah->chip_fullsleep = true;
2194 case ATH9K_PM_NETWORK_SLEEP:
2195 ath9k_set_power_network_sleep(ah);
2198 ath_err(common, "Unknown power mode %u\n", mode);
2201 ah->power_mode = mode;
2204 * XXX: If this warning never comes up after a while then
2205 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
2206 * ath9k_hw_setpower() return type void.
2209 if (!(ah->ah_flags & AH_UNPLUGGED))
2210 ATH_DBG_WARN_ON_ONCE(!status);
2214 EXPORT_SYMBOL(ath9k_hw_setpower);
2216 /*******************/
2217 /* Beacon Handling */
2218 /*******************/
2220 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2224 ENABLE_REGWRITE_BUFFER(ah);
2226 switch (ah->opmode) {
2227 case NL80211_IFTYPE_ADHOC:
2228 case NL80211_IFTYPE_MESH_POINT:
2229 REG_SET_BIT(ah, AR_TXCFG,
2230 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2231 REG_WRITE(ah, AR_NEXT_NDP_TIMER, next_beacon +
2232 TU_TO_USEC(ah->atim_window ? ah->atim_window : 1));
2233 flags |= AR_NDP_TIMER_EN;
2234 case NL80211_IFTYPE_AP:
2235 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
2236 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
2237 TU_TO_USEC(ah->config.dma_beacon_response_time));
2238 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
2239 TU_TO_USEC(ah->config.sw_beacon_response_time));
2241 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2244 ath_dbg(ath9k_hw_common(ah), BEACON,
2245 "%s: unsupported opmode: %d\n", __func__, ah->opmode);
2250 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
2251 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
2252 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
2253 REG_WRITE(ah, AR_NDP_PERIOD, beacon_period);
2255 REGWRITE_BUFFER_FLUSH(ah);
2257 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2259 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2261 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2262 const struct ath9k_beacon_state *bs)
2264 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2265 struct ath9k_hw_capabilities *pCap = &ah->caps;
2266 struct ath_common *common = ath9k_hw_common(ah);
2268 ENABLE_REGWRITE_BUFFER(ah);
2270 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
2272 REG_WRITE(ah, AR_BEACON_PERIOD,
2273 TU_TO_USEC(bs->bs_intval));
2274 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
2275 TU_TO_USEC(bs->bs_intval));
2277 REGWRITE_BUFFER_FLUSH(ah);
2279 REG_RMW_FIELD(ah, AR_RSSI_THR,
2280 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2282 beaconintval = bs->bs_intval;
2284 if (bs->bs_sleepduration > beaconintval)
2285 beaconintval = bs->bs_sleepduration;
2287 dtimperiod = bs->bs_dtimperiod;
2288 if (bs->bs_sleepduration > dtimperiod)
2289 dtimperiod = bs->bs_sleepduration;
2291 if (beaconintval == dtimperiod)
2292 nextTbtt = bs->bs_nextdtim;
2294 nextTbtt = bs->bs_nexttbtt;
2296 ath_dbg(common, BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2297 ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
2298 ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
2299 ath_dbg(common, BEACON, "DTIM period %d\n", dtimperiod);
2301 ENABLE_REGWRITE_BUFFER(ah);
2303 REG_WRITE(ah, AR_NEXT_DTIM,
2304 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
2305 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
2307 REG_WRITE(ah, AR_SLEEP1,
2308 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2309 | AR_SLEEP1_ASSUME_DTIM);
2311 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2312 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2314 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2316 REG_WRITE(ah, AR_SLEEP2,
2317 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2319 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
2320 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
2322 REGWRITE_BUFFER_FLUSH(ah);
2324 REG_SET_BIT(ah, AR_TIMER_MODE,
2325 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2328 /* TSF Out of Range Threshold */
2329 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2331 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2333 /*******************/
2334 /* HW Capabilities */
2335 /*******************/
2337 static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
2339 eeprom_chainmask &= chip_chainmask;
2340 if (eeprom_chainmask)
2341 return eeprom_chainmask;
2343 return chip_chainmask;
2347 * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
2348 * @ah: the atheros hardware data structure
2350 * We enable DFS support upstream on chipsets which have passed a series
2351 * of tests. The testing requirements are going to be documented. Desired
2352 * test requirements are documented at:
2354 * http://wireless.kernel.org/en/users/Drivers/ath9k/dfs
2356 * Once a new chipset gets properly tested an individual commit can be used
2357 * to document the testing for DFS for that chipset.
2359 static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
2362 switch (ah->hw_version.macVersion) {
2363 /* AR9580 will likely be our first target to get testing on */
2364 case AR_SREV_VERSION_9580:
2370 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2372 struct ath9k_hw_capabilities *pCap = &ah->caps;
2373 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2374 struct ath_common *common = ath9k_hw_common(ah);
2375 unsigned int chip_chainmask;
2378 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
2380 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2381 regulatory->current_rd = eeval;
2383 if (ah->opmode != NL80211_IFTYPE_AP &&
2384 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2385 if (regulatory->current_rd == 0x64 ||
2386 regulatory->current_rd == 0x65)
2387 regulatory->current_rd += 5;
2388 else if (regulatory->current_rd == 0x41)
2389 regulatory->current_rd = 0x43;
2390 ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
2391 regulatory->current_rd);
2394 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2395 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
2397 "no band has been marked as supported in EEPROM\n");
2401 if (eeval & AR5416_OPFLAGS_11A)
2402 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
2404 if (eeval & AR5416_OPFLAGS_11G)
2405 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
2407 if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah))
2409 else if (AR_SREV_9462(ah))
2411 else if (!AR_SREV_9280_20_OR_LATER(ah))
2413 else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
2418 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2420 * For AR9271 we will temporarilly uses the rx chainmax as read from
2423 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2424 !(eeval & AR5416_OPFLAGS_11A) &&
2425 !(AR_SREV_9271(ah)))
2426 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2427 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2428 else if (AR_SREV_9100(ah))
2429 pCap->rx_chainmask = 0x7;
2431 /* Use rx_chainmask from EEPROM. */
2432 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2434 pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
2435 pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
2436 ah->txchainmask = pCap->tx_chainmask;
2437 ah->rxchainmask = pCap->rx_chainmask;
2439 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2441 /* enable key search for every frame in an aggregate */
2442 if (AR_SREV_9300_20_OR_LATER(ah))
2443 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
2445 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
2447 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
2448 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2450 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2452 if (AR_SREV_9271(ah))
2453 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2454 else if (AR_DEVID_7010(ah))
2455 pCap->num_gpio_pins = AR7010_NUM_GPIO;
2456 else if (AR_SREV_9300_20_OR_LATER(ah))
2457 pCap->num_gpio_pins = AR9300_NUM_GPIO;
2458 else if (AR_SREV_9287_11_OR_LATER(ah))
2459 pCap->num_gpio_pins = AR9287_NUM_GPIO;
2460 else if (AR_SREV_9285_12_OR_LATER(ah))
2461 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2462 else if (AR_SREV_9280_20_OR_LATER(ah))
2463 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2465 pCap->num_gpio_pins = AR_NUM_GPIO;
2467 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
2468 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2470 pCap->rts_aggr_limit = (8 * 1024);
2472 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2473 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2474 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2476 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2477 ah->rfkill_polarity =
2478 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2480 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2483 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
2484 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2486 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2488 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2489 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2491 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2493 if (AR_SREV_9300_20_OR_LATER(ah)) {
2494 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
2495 if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah))
2496 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
2498 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2499 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2500 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2501 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2502 pCap->txs_len = sizeof(struct ar9003_txs);
2503 if (!ah->config.paprd_disable &&
2504 ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
2505 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
2507 pCap->tx_desc_len = sizeof(struct ath_desc);
2508 if (AR_SREV_9280_20(ah))
2509 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
2512 if (AR_SREV_9300_20_OR_LATER(ah))
2513 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
2515 if (AR_SREV_9300_20_OR_LATER(ah))
2516 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
2518 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
2519 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
2521 if (AR_SREV_9285(ah))
2522 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
2524 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2525 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
2526 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2528 if (AR_SREV_9300_20_OR_LATER(ah)) {
2529 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
2530 pCap->hw_caps |= ATH9K_HW_CAP_APM;
2534 if (AR_SREV_9330(ah) || AR_SREV_9485(ah)) {
2535 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2537 * enable the diversity-combining algorithm only when
2538 * both enable_lna_div and enable_fast_div are set
2539 * Table for Diversity
2540 * ant_div_alt_lnaconf bit 0-1
2541 * ant_div_main_lnaconf bit 2-3
2542 * ant_div_alt_gaintb bit 4
2543 * ant_div_main_gaintb bit 5
2544 * enable_ant_div_lnadiv bit 6
2545 * enable_ant_fast_div bit 7
2547 if ((ant_div_ctl1 >> 0x6) == 0x3)
2548 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2551 if (AR_SREV_9485_10(ah)) {
2552 pCap->pcie_lcr_extsync_en = true;
2553 pCap->pcie_lcr_offset = 0x80;
2556 if (ath9k_hw_dfs_tested(ah))
2557 pCap->hw_caps |= ATH9K_HW_CAP_DFS;
2559 tx_chainmask = pCap->tx_chainmask;
2560 rx_chainmask = pCap->rx_chainmask;
2561 while (tx_chainmask || rx_chainmask) {
2562 if (tx_chainmask & BIT(0))
2563 pCap->max_txchains++;
2564 if (rx_chainmask & BIT(0))
2565 pCap->max_rxchains++;
2571 if (AR_SREV_9300_20_OR_LATER(ah)) {
2572 ah->enabled_cals |= TX_IQ_CAL;
2573 if (AR_SREV_9485_OR_LATER(ah))
2574 ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
2577 if (AR_SREV_9462(ah)) {
2579 if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
2580 pCap->hw_caps |= ATH9K_HW_CAP_MCI;
2582 if (AR_SREV_9462_20(ah))
2583 pCap->hw_caps |= ATH9K_HW_CAP_RTT;
2588 if (AR_SREV_9280_20_OR_LATER(ah)) {
2589 pCap->hw_caps |= ATH9K_HW_WOW_DEVICE_CAPABLE |
2590 ATH9K_HW_WOW_PATTERN_MATCH_EXACT;
2592 if (AR_SREV_9280(ah))
2593 pCap->hw_caps |= ATH9K_HW_WOW_PATTERN_MATCH_DWORD;
2599 /****************************/
2600 /* GPIO / RFKILL / Antennae */
2601 /****************************/
2603 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2607 u32 gpio_shift, tmp;
2610 addr = AR_GPIO_OUTPUT_MUX3;
2612 addr = AR_GPIO_OUTPUT_MUX2;
2614 addr = AR_GPIO_OUTPUT_MUX1;
2616 gpio_shift = (gpio % 6) * 5;
2618 if (AR_SREV_9280_20_OR_LATER(ah)
2619 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2620 REG_RMW(ah, addr, (type << gpio_shift),
2621 (0x1f << gpio_shift));
2623 tmp = REG_READ(ah, addr);
2624 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2625 tmp &= ~(0x1f << gpio_shift);
2626 tmp |= (type << gpio_shift);
2627 REG_WRITE(ah, addr, tmp);
2631 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2635 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2637 if (AR_DEVID_7010(ah)) {
2639 REG_RMW(ah, AR7010_GPIO_OE,
2640 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2641 (AR7010_GPIO_OE_MASK << gpio_shift));
2645 gpio_shift = gpio << 1;
2648 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2649 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2651 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2653 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2655 #define MS_REG_READ(x, y) \
2656 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2658 if (gpio >= ah->caps.num_gpio_pins)
2661 if (AR_DEVID_7010(ah)) {
2663 val = REG_READ(ah, AR7010_GPIO_IN);
2664 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2665 } else if (AR_SREV_9300_20_OR_LATER(ah))
2666 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2667 AR_GPIO_BIT(gpio)) != 0;
2668 else if (AR_SREV_9271(ah))
2669 return MS_REG_READ(AR9271, gpio) != 0;
2670 else if (AR_SREV_9287_11_OR_LATER(ah))
2671 return MS_REG_READ(AR9287, gpio) != 0;
2672 else if (AR_SREV_9285_12_OR_LATER(ah))
2673 return MS_REG_READ(AR9285, gpio) != 0;
2674 else if (AR_SREV_9280_20_OR_LATER(ah))
2675 return MS_REG_READ(AR928X, gpio) != 0;
2677 return MS_REG_READ(AR, gpio) != 0;
2679 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2681 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2686 if (AR_DEVID_7010(ah)) {
2688 REG_RMW(ah, AR7010_GPIO_OE,
2689 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2690 (AR7010_GPIO_OE_MASK << gpio_shift));
2694 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2695 gpio_shift = 2 * gpio;
2698 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2699 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2701 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2703 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2705 if (AR_DEVID_7010(ah)) {
2707 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2712 if (AR_SREV_9271(ah))
2715 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2718 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2720 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2722 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2724 EXPORT_SYMBOL(ath9k_hw_setantenna);
2726 /*********************/
2727 /* General Operation */
2728 /*********************/
2730 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2732 u32 bits = REG_READ(ah, AR_RX_FILTER);
2733 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2735 if (phybits & AR_PHY_ERR_RADAR)
2736 bits |= ATH9K_RX_FILTER_PHYRADAR;
2737 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2738 bits |= ATH9K_RX_FILTER_PHYERR;
2742 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2744 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2748 ENABLE_REGWRITE_BUFFER(ah);
2750 if (AR_SREV_9462(ah))
2751 bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
2753 REG_WRITE(ah, AR_RX_FILTER, bits);
2756 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2757 phybits |= AR_PHY_ERR_RADAR;
2758 if (bits & ATH9K_RX_FILTER_PHYERR)
2759 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2760 REG_WRITE(ah, AR_PHY_ERR, phybits);
2763 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2765 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2767 REGWRITE_BUFFER_FLUSH(ah);
2769 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2771 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2773 if (ath9k_hw_mci_is_enabled(ah))
2774 ar9003_mci_bt_gain_ctrl(ah);
2776 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2779 ath9k_hw_init_pll(ah, NULL);
2780 ah->htc_reset_init = true;
2783 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2785 bool ath9k_hw_disable(struct ath_hw *ah)
2787 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2790 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2793 ath9k_hw_init_pll(ah, NULL);
2796 EXPORT_SYMBOL(ath9k_hw_disable);
2798 static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
2800 enum eeprom_param gain_param;
2802 if (IS_CHAN_2GHZ(chan))
2803 gain_param = EEP_ANTENNA_GAIN_2G;
2805 gain_param = EEP_ANTENNA_GAIN_5G;
2807 return ah->eep_ops->get_eeprom(ah, gain_param);
2810 void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
2813 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2814 struct ieee80211_channel *channel;
2815 int chan_pwr, new_pwr, max_gain;
2816 int ant_gain, ant_reduction = 0;
2821 channel = chan->chan;
2822 chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
2823 new_pwr = min_t(int, chan_pwr, reg->power_limit);
2824 max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
2826 ant_gain = get_antenna_gain(ah, chan);
2827 if (ant_gain > max_gain)
2828 ant_reduction = ant_gain - max_gain;
2830 ah->eep_ops->set_txpower(ah, chan,
2831 ath9k_regd_get_ctl(reg, chan),
2832 ant_reduction, new_pwr, test);
2835 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2837 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2838 struct ath9k_channel *chan = ah->curchan;
2839 struct ieee80211_channel *channel = chan->chan;
2841 reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
2843 channel->max_power = MAX_RATE_POWER / 2;
2845 ath9k_hw_apply_txpower(ah, chan, test);
2848 channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
2850 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2852 void ath9k_hw_setopmode(struct ath_hw *ah)
2854 ath9k_hw_set_operating_mode(ah, ah->opmode);
2856 EXPORT_SYMBOL(ath9k_hw_setopmode);
2858 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2860 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2861 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2863 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2865 void ath9k_hw_write_associd(struct ath_hw *ah)
2867 struct ath_common *common = ath9k_hw_common(ah);
2869 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2870 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2871 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2873 EXPORT_SYMBOL(ath9k_hw_write_associd);
2875 #define ATH9K_MAX_TSF_READ 10
2877 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2879 u32 tsf_lower, tsf_upper1, tsf_upper2;
2882 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2883 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2884 tsf_lower = REG_READ(ah, AR_TSF_L32);
2885 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2886 if (tsf_upper2 == tsf_upper1)
2888 tsf_upper1 = tsf_upper2;
2891 WARN_ON( i == ATH9K_MAX_TSF_READ );
2893 return (((u64)tsf_upper1 << 32) | tsf_lower);
2895 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2897 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2899 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2900 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2902 EXPORT_SYMBOL(ath9k_hw_settsf64);
2904 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2906 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2907 AH_TSF_WRITE_TIMEOUT))
2908 ath_dbg(ath9k_hw_common(ah), RESET,
2909 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2911 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2913 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2915 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, bool set)
2918 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2920 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2922 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2924 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2926 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2929 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2930 macmode = AR_2040_JOINED_RX_CLEAR;
2934 REG_WRITE(ah, AR_2040_MODE, macmode);
2937 /* HW Generic timers configuration */
2939 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2941 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2942 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2943 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2944 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2945 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2946 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2947 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2948 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2949 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2950 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2951 AR_NDP2_TIMER_MODE, 0x0002},
2952 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2953 AR_NDP2_TIMER_MODE, 0x0004},
2954 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2955 AR_NDP2_TIMER_MODE, 0x0008},
2956 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2957 AR_NDP2_TIMER_MODE, 0x0010},
2958 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2959 AR_NDP2_TIMER_MODE, 0x0020},
2960 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2961 AR_NDP2_TIMER_MODE, 0x0040},
2962 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2963 AR_NDP2_TIMER_MODE, 0x0080}
2966 /* HW generic timer primitives */
2968 /* compute and clear index of rightmost 1 */
2969 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2979 return timer_table->gen_timer_index[b];
2982 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2984 return REG_READ(ah, AR_TSF_L32);
2986 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2988 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2989 void (*trigger)(void *),
2990 void (*overflow)(void *),
2994 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2995 struct ath_gen_timer *timer;
2997 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2999 if (timer == NULL) {
3000 ath_err(ath9k_hw_common(ah),
3001 "Failed to allocate memory for hw timer[%d]\n",
3006 /* allocate a hardware generic timer slot */
3007 timer_table->timers[timer_index] = timer;
3008 timer->index = timer_index;
3009 timer->trigger = trigger;
3010 timer->overflow = overflow;
3015 EXPORT_SYMBOL(ath_gen_timer_alloc);
3017 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
3018 struct ath_gen_timer *timer,
3022 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3023 u32 tsf, timer_next;
3025 BUG_ON(!timer_period);
3027 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
3029 tsf = ath9k_hw_gettsf32(ah);
3031 timer_next = tsf + trig_timeout;
3033 ath_dbg(ath9k_hw_common(ah), HWTIMER,
3034 "current tsf %x period %x timer_next %x\n",
3035 tsf, timer_period, timer_next);
3038 * Program generic timer registers
3040 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
3042 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
3044 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3045 gen_tmr_configuration[timer->index].mode_mask);
3047 if (AR_SREV_9462(ah)) {
3049 * Starting from AR9462, each generic timer can select which tsf
3050 * to use. But we still follow the old rule, 0 - 7 use tsf and
3053 if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
3054 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3055 (1 << timer->index));
3057 REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3058 (1 << timer->index));
3061 /* Enable both trigger and thresh interrupt masks */
3062 REG_SET_BIT(ah, AR_IMR_S5,
3063 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3064 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3066 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
3068 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
3070 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3072 if ((timer->index < AR_FIRST_NDP_TIMER) ||
3073 (timer->index >= ATH_MAX_GEN_TIMER)) {
3077 /* Clear generic timer enable bits. */
3078 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3079 gen_tmr_configuration[timer->index].mode_mask);
3081 /* Disable both trigger and thresh interrupt masks */
3082 REG_CLR_BIT(ah, AR_IMR_S5,
3083 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3084 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3086 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
3088 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
3090 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
3092 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3094 /* free the hardware generic timer slot */
3095 timer_table->timers[timer->index] = NULL;
3098 EXPORT_SYMBOL(ath_gen_timer_free);
3101 * Generic Timer Interrupts handling
3103 void ath_gen_timer_isr(struct ath_hw *ah)
3105 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3106 struct ath_gen_timer *timer;
3107 struct ath_common *common = ath9k_hw_common(ah);
3108 u32 trigger_mask, thresh_mask, index;
3110 /* get hardware generic timer interrupt status */
3111 trigger_mask = ah->intr_gen_timer_trigger;
3112 thresh_mask = ah->intr_gen_timer_thresh;
3113 trigger_mask &= timer_table->timer_mask.val;
3114 thresh_mask &= timer_table->timer_mask.val;
3116 trigger_mask &= ~thresh_mask;
3118 while (thresh_mask) {
3119 index = rightmost_index(timer_table, &thresh_mask);
3120 timer = timer_table->timers[index];
3122 ath_dbg(common, HWTIMER, "TSF overflow for Gen timer %d\n",
3124 timer->overflow(timer->arg);
3127 while (trigger_mask) {
3128 index = rightmost_index(timer_table, &trigger_mask);
3129 timer = timer_table->timers[index];
3131 ath_dbg(common, HWTIMER,
3132 "Gen timer[%d] trigger\n", index);
3133 timer->trigger(timer->arg);
3136 EXPORT_SYMBOL(ath_gen_timer_isr);
3145 } ath_mac_bb_names[] = {
3146 /* Devices with external radios */
3147 { AR_SREV_VERSION_5416_PCI, "5416" },
3148 { AR_SREV_VERSION_5416_PCIE, "5418" },
3149 { AR_SREV_VERSION_9100, "9100" },
3150 { AR_SREV_VERSION_9160, "9160" },
3151 /* Single-chip solutions */
3152 { AR_SREV_VERSION_9280, "9280" },
3153 { AR_SREV_VERSION_9285, "9285" },
3154 { AR_SREV_VERSION_9287, "9287" },
3155 { AR_SREV_VERSION_9271, "9271" },
3156 { AR_SREV_VERSION_9300, "9300" },
3157 { AR_SREV_VERSION_9330, "9330" },
3158 { AR_SREV_VERSION_9340, "9340" },
3159 { AR_SREV_VERSION_9485, "9485" },
3160 { AR_SREV_VERSION_9462, "9462" },
3161 { AR_SREV_VERSION_9550, "9550" },
3164 /* For devices with external radios */
3168 } ath_rf_names[] = {
3170 { AR_RAD5133_SREV_MAJOR, "5133" },
3171 { AR_RAD5122_SREV_MAJOR, "5122" },
3172 { AR_RAD2133_SREV_MAJOR, "2133" },
3173 { AR_RAD2122_SREV_MAJOR, "2122" }
3177 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3179 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3183 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3184 if (ath_mac_bb_names[i].version == mac_bb_version) {
3185 return ath_mac_bb_names[i].name;
3193 * Return the RF name. "????" is returned if the RF is unknown.
3194 * Used for devices with external radios.
3196 static const char *ath9k_hw_rf_name(u16 rf_version)
3200 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3201 if (ath_rf_names[i].version == rf_version) {
3202 return ath_rf_names[i].name;
3209 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3213 /* chipsets >= AR9280 are single-chip */
3214 if (AR_SREV_9280_20_OR_LATER(ah)) {
3215 used = snprintf(hw_name, len,
3216 "Atheros AR%s Rev:%x",
3217 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3218 ah->hw_version.macRev);
3221 used = snprintf(hw_name, len,
3222 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3223 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3224 ah->hw_version.macRev,
3225 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
3226 AR_RADIO_SREV_MAJOR)),
3227 ah->hw_version.phyRev);
3230 hw_name[used] = '\0';
3232 EXPORT_SYMBOL(ath9k_hw_name);