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 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:
649 case AR_SREV_VERSION_9550:
653 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
654 ah->hw_version.macVersion, ah->hw_version.macRev);
658 if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
659 AR_SREV_9330(ah) || AR_SREV_9550(ah))
660 ah->is_pciexpress = false;
662 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
663 ath9k_hw_init_cal_settings(ah);
665 ah->ani_function = ATH9K_ANI_ALL;
666 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
667 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
668 if (!AR_SREV_9300_20_OR_LATER(ah))
669 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
671 ath9k_hw_init_mode_regs(ah);
673 if (!ah->is_pciexpress)
674 ath9k_hw_disablepcie(ah);
676 r = ath9k_hw_post_init(ah);
680 ath9k_hw_init_mode_gain_regs(ah);
681 r = ath9k_hw_fill_cap_info(ah);
685 r = ath9k_hw_init_macaddr(ah);
687 ath_err(common, "Failed to initialize MAC address\n");
691 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
692 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
694 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
696 if (AR_SREV_9330(ah))
697 ah->bb_watchdog_timeout_ms = 85;
699 ah->bb_watchdog_timeout_ms = 25;
701 common->state = ATH_HW_INITIALIZED;
706 int ath9k_hw_init(struct ath_hw *ah)
709 struct ath_common *common = ath9k_hw_common(ah);
711 /* These are all the AR5008/AR9001/AR9002 hardware family of chipsets */
712 switch (ah->hw_version.devid) {
713 case AR5416_DEVID_PCI:
714 case AR5416_DEVID_PCIE:
715 case AR5416_AR9100_DEVID:
716 case AR9160_DEVID_PCI:
717 case AR9280_DEVID_PCI:
718 case AR9280_DEVID_PCIE:
719 case AR9285_DEVID_PCIE:
720 case AR9287_DEVID_PCI:
721 case AR9287_DEVID_PCIE:
722 case AR2427_DEVID_PCIE:
723 case AR9300_DEVID_PCIE:
724 case AR9300_DEVID_AR9485_PCIE:
725 case AR9300_DEVID_AR9330:
726 case AR9300_DEVID_AR9340:
727 case AR9300_DEVID_QCA955X:
728 case AR9300_DEVID_AR9580:
729 case AR9300_DEVID_AR9462:
730 case AR9485_DEVID_AR1111:
733 if (common->bus_ops->ath_bus_type == ATH_USB)
735 ath_err(common, "Hardware device ID 0x%04x not supported\n",
736 ah->hw_version.devid);
740 ret = __ath9k_hw_init(ah);
743 "Unable to initialize hardware; initialization status: %d\n",
750 EXPORT_SYMBOL(ath9k_hw_init);
752 static void ath9k_hw_init_qos(struct ath_hw *ah)
754 ENABLE_REGWRITE_BUFFER(ah);
756 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
757 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
759 REG_WRITE(ah, AR_QOS_NO_ACK,
760 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
761 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
762 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
764 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
765 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
766 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
767 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
768 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
770 REGWRITE_BUFFER_FLUSH(ah);
773 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
775 struct ath_common *common = ath9k_hw_common(ah);
778 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
780 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
782 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
786 if (WARN_ON_ONCE(i >= 100)) {
787 ath_err(common, "PLL4 meaurement not done\n");
794 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
796 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
798 static void ath9k_hw_init_pll(struct ath_hw *ah,
799 struct ath9k_channel *chan)
803 if (AR_SREV_9485(ah)) {
805 /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
806 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
807 AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
808 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
809 AR_CH0_DPLL2_KD, 0x40);
810 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
811 AR_CH0_DPLL2_KI, 0x4);
813 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
814 AR_CH0_BB_DPLL1_REFDIV, 0x5);
815 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
816 AR_CH0_BB_DPLL1_NINI, 0x58);
817 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
818 AR_CH0_BB_DPLL1_NFRAC, 0x0);
820 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
821 AR_CH0_BB_DPLL2_OUTDIV, 0x1);
822 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
823 AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
824 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
825 AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
827 /* program BB PLL phase_shift to 0x6 */
828 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
829 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
831 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
832 AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
834 } else if (AR_SREV_9330(ah)) {
835 u32 ddr_dpll2, pll_control2, kd;
837 if (ah->is_clk_25mhz) {
838 ddr_dpll2 = 0x18e82f01;
839 pll_control2 = 0xe04a3d;
842 ddr_dpll2 = 0x19e82f01;
843 pll_control2 = 0x886666;
847 /* program DDR PLL ki and kd value */
848 REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
850 /* program DDR PLL phase_shift */
851 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
852 AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
854 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
857 /* program refdiv, nint, frac to RTC register */
858 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
860 /* program BB PLL kd and ki value */
861 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
862 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
864 /* program BB PLL phase_shift */
865 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
866 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
867 } else if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
868 u32 regval, pll2_divint, pll2_divfrac, refdiv;
870 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
873 REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
876 if (ah->is_clk_25mhz) {
878 pll2_divfrac = 0x1eb85;
881 if (AR_SREV_9340(ah)) {
887 pll2_divfrac = 0x26666;
892 regval = REG_READ(ah, AR_PHY_PLL_MODE);
893 regval |= (0x1 << 16);
894 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
897 REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
898 (pll2_divint << 18) | pll2_divfrac);
901 regval = REG_READ(ah, AR_PHY_PLL_MODE);
902 if (AR_SREV_9340(ah))
903 regval = (regval & 0x80071fff) | (0x1 << 30) |
904 (0x1 << 13) | (0x4 << 26) | (0x18 << 19);
906 regval = (regval & 0x80071fff) | (0x3 << 30) |
907 (0x1 << 13) | (0x4 << 26) | (0x60 << 19);
908 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
909 REG_WRITE(ah, AR_PHY_PLL_MODE,
910 REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
914 pll = ath9k_hw_compute_pll_control(ah, chan);
916 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
918 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
922 /* Switch the core clock for ar9271 to 117Mhz */
923 if (AR_SREV_9271(ah)) {
925 REG_WRITE(ah, 0x50040, 0x304);
928 udelay(RTC_PLL_SETTLE_DELAY);
930 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
932 if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
933 if (ah->is_clk_25mhz) {
934 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
935 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
936 REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
938 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
939 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
940 REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
946 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
947 enum nl80211_iftype opmode)
949 u32 sync_default = AR_INTR_SYNC_DEFAULT;
950 u32 imr_reg = AR_IMR_TXERR |
956 if (AR_SREV_9340(ah) || AR_SREV_9550(ah))
957 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
959 if (AR_SREV_9300_20_OR_LATER(ah)) {
960 imr_reg |= AR_IMR_RXOK_HP;
961 if (ah->config.rx_intr_mitigation)
962 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
964 imr_reg |= AR_IMR_RXOK_LP;
967 if (ah->config.rx_intr_mitigation)
968 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
970 imr_reg |= AR_IMR_RXOK;
973 if (ah->config.tx_intr_mitigation)
974 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
976 imr_reg |= AR_IMR_TXOK;
978 ENABLE_REGWRITE_BUFFER(ah);
980 REG_WRITE(ah, AR_IMR, imr_reg);
981 ah->imrs2_reg |= AR_IMR_S2_GTT;
982 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
984 if (!AR_SREV_9100(ah)) {
985 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
986 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
987 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
990 REGWRITE_BUFFER_FLUSH(ah);
992 if (AR_SREV_9300_20_OR_LATER(ah)) {
993 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
994 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
995 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
996 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
1000 static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
1002 u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
1003 val = min(val, (u32) 0xFFFF);
1004 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
1007 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
1009 u32 val = ath9k_hw_mac_to_clks(ah, us);
1010 val = min(val, (u32) 0xFFFF);
1011 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
1014 static void ath9k_hw_set_ack_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_ACK));
1018 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
1021 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
1023 u32 val = ath9k_hw_mac_to_clks(ah, us);
1024 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
1025 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
1028 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
1031 ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
1033 ah->globaltxtimeout = (u32) -1;
1036 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
1037 ah->globaltxtimeout = tu;
1042 void ath9k_hw_init_global_settings(struct ath_hw *ah)
1044 struct ath_common *common = ath9k_hw_common(ah);
1045 struct ieee80211_conf *conf = &common->hw->conf;
1046 const struct ath9k_channel *chan = ah->curchan;
1047 int acktimeout, ctstimeout, ack_offset = 0;
1050 int rx_lat = 0, tx_lat = 0, eifs = 0;
1053 ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
1059 if (ah->misc_mode != 0)
1060 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
1062 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1068 if (IS_CHAN_5GHZ(chan))
1073 if (IS_CHAN_HALF_RATE(chan)) {
1077 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1083 } else if (IS_CHAN_QUARTER_RATE(chan)) {
1085 rx_lat = (rx_lat * 4) - 1;
1087 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1094 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1095 eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
1096 reg = AR_USEC_ASYNC_FIFO;
1098 eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
1100 reg = REG_READ(ah, AR_USEC);
1102 rx_lat = MS(reg, AR_USEC_RX_LAT);
1103 tx_lat = MS(reg, AR_USEC_TX_LAT);
1105 slottime = ah->slottime;
1108 /* As defined by IEEE 802.11-2007 17.3.8.6 */
1109 acktimeout = slottime + sifstime + 3 * ah->coverage_class + ack_offset;
1110 ctstimeout = acktimeout;
1113 * Workaround for early ACK timeouts, add an offset to match the
1114 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
1115 * This was initially only meant to work around an issue with delayed
1116 * BA frames in some implementations, but it has been found to fix ACK
1117 * timeout issues in other cases as well.
1119 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ &&
1120 !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
1121 acktimeout += 64 - sifstime - ah->slottime;
1122 ctstimeout += 48 - sifstime - ah->slottime;
1126 ath9k_hw_set_sifs_time(ah, sifstime);
1127 ath9k_hw_setslottime(ah, slottime);
1128 ath9k_hw_set_ack_timeout(ah, acktimeout);
1129 ath9k_hw_set_cts_timeout(ah, ctstimeout);
1130 if (ah->globaltxtimeout != (u32) -1)
1131 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
1133 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
1134 REG_RMW(ah, AR_USEC,
1135 (common->clockrate - 1) |
1136 SM(rx_lat, AR_USEC_RX_LAT) |
1137 SM(tx_lat, AR_USEC_TX_LAT),
1138 AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
1141 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
1143 void ath9k_hw_deinit(struct ath_hw *ah)
1145 struct ath_common *common = ath9k_hw_common(ah);
1147 if (common->state < ATH_HW_INITIALIZED)
1150 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1153 ath9k_hw_rf_free_ext_banks(ah);
1155 EXPORT_SYMBOL(ath9k_hw_deinit);
1161 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
1163 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
1165 if (IS_CHAN_B(chan))
1167 else if (IS_CHAN_G(chan))
1175 /****************************************/
1176 /* Reset and Channel Switching Routines */
1177 /****************************************/
1179 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
1181 struct ath_common *common = ath9k_hw_common(ah);
1183 ENABLE_REGWRITE_BUFFER(ah);
1186 * set AHB_MODE not to do cacheline prefetches
1188 if (!AR_SREV_9300_20_OR_LATER(ah))
1189 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
1192 * let mac dma reads be in 128 byte chunks
1194 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
1196 REGWRITE_BUFFER_FLUSH(ah);
1199 * Restore TX Trigger Level to its pre-reset value.
1200 * The initial value depends on whether aggregation is enabled, and is
1201 * adjusted whenever underruns are detected.
1203 if (!AR_SREV_9300_20_OR_LATER(ah))
1204 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
1206 ENABLE_REGWRITE_BUFFER(ah);
1209 * let mac dma writes be in 128 byte chunks
1211 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
1214 * Setup receive FIFO threshold to hold off TX activities
1216 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
1218 if (AR_SREV_9300_20_OR_LATER(ah)) {
1219 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
1220 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
1222 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
1223 ah->caps.rx_status_len);
1227 * reduce the number of usable entries in PCU TXBUF to avoid
1228 * wrap around issues.
1230 if (AR_SREV_9285(ah)) {
1231 /* For AR9285 the number of Fifos are reduced to half.
1232 * So set the usable tx buf size also to half to
1233 * avoid data/delimiter underruns
1235 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1236 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
1237 } else if (!AR_SREV_9271(ah)) {
1238 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1239 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
1242 REGWRITE_BUFFER_FLUSH(ah);
1244 if (AR_SREV_9300_20_OR_LATER(ah))
1245 ath9k_hw_reset_txstatus_ring(ah);
1248 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
1250 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
1251 u32 set = AR_STA_ID1_KSRCH_MODE;
1254 case NL80211_IFTYPE_ADHOC:
1255 case NL80211_IFTYPE_MESH_POINT:
1256 set |= AR_STA_ID1_ADHOC;
1257 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1259 case NL80211_IFTYPE_AP:
1260 set |= AR_STA_ID1_STA_AP;
1262 case NL80211_IFTYPE_STATION:
1263 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1266 if (!ah->is_monitoring)
1270 REG_RMW(ah, AR_STA_ID1, set, mask);
1273 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1274 u32 *coef_mantissa, u32 *coef_exponent)
1276 u32 coef_exp, coef_man;
1278 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1279 if ((coef_scaled >> coef_exp) & 0x1)
1282 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1284 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1286 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1287 *coef_exponent = coef_exp - 16;
1290 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1295 if (AR_SREV_9100(ah)) {
1296 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1297 AR_RTC_DERIVED_CLK_PERIOD, 1);
1298 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1301 ENABLE_REGWRITE_BUFFER(ah);
1303 if (AR_SREV_9300_20_OR_LATER(ah)) {
1304 REG_WRITE(ah, AR_WA, ah->WARegVal);
1308 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1309 AR_RTC_FORCE_WAKE_ON_INT);
1311 if (AR_SREV_9100(ah)) {
1312 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1313 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1315 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1317 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1318 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1320 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1323 if (!AR_SREV_9300_20_OR_LATER(ah))
1325 REG_WRITE(ah, AR_RC, val);
1327 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1328 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1330 rst_flags = AR_RTC_RC_MAC_WARM;
1331 if (type == ATH9K_RESET_COLD)
1332 rst_flags |= AR_RTC_RC_MAC_COLD;
1335 if (AR_SREV_9330(ah)) {
1340 * call external reset function to reset WMAC if:
1341 * - doing a cold reset
1342 * - we have pending frames in the TX queues
1345 for (i = 0; i < AR_NUM_QCU; i++) {
1346 npend = ath9k_hw_numtxpending(ah, i);
1351 if (ah->external_reset &&
1352 (npend || type == ATH9K_RESET_COLD)) {
1355 ath_dbg(ath9k_hw_common(ah), RESET,
1356 "reset MAC via external reset\n");
1358 reset_err = ah->external_reset();
1360 ath_err(ath9k_hw_common(ah),
1361 "External reset failed, err=%d\n",
1366 REG_WRITE(ah, AR_RTC_RESET, 1);
1370 if (ath9k_hw_mci_is_enabled(ah))
1371 ar9003_mci_check_gpm_offset(ah);
1373 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1375 REGWRITE_BUFFER_FLUSH(ah);
1379 REG_WRITE(ah, AR_RTC_RC, 0);
1380 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1381 ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
1385 if (!AR_SREV_9100(ah))
1386 REG_WRITE(ah, AR_RC, 0);
1388 if (AR_SREV_9100(ah))
1394 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1396 ENABLE_REGWRITE_BUFFER(ah);
1398 if (AR_SREV_9300_20_OR_LATER(ah)) {
1399 REG_WRITE(ah, AR_WA, ah->WARegVal);
1403 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1404 AR_RTC_FORCE_WAKE_ON_INT);
1406 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1407 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1409 REG_WRITE(ah, AR_RTC_RESET, 0);
1411 REGWRITE_BUFFER_FLUSH(ah);
1413 if (!AR_SREV_9300_20_OR_LATER(ah))
1416 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1417 REG_WRITE(ah, AR_RC, 0);
1419 REG_WRITE(ah, AR_RTC_RESET, 1);
1421 if (!ath9k_hw_wait(ah,
1426 ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
1430 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1433 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1437 if (AR_SREV_9300_20_OR_LATER(ah)) {
1438 REG_WRITE(ah, AR_WA, ah->WARegVal);
1442 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1443 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1446 case ATH9K_RESET_POWER_ON:
1447 ret = ath9k_hw_set_reset_power_on(ah);
1449 case ATH9K_RESET_WARM:
1450 case ATH9K_RESET_COLD:
1451 ret = ath9k_hw_set_reset(ah, type);
1460 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1461 struct ath9k_channel *chan)
1463 int reset_type = ATH9K_RESET_WARM;
1465 if (AR_SREV_9280(ah)) {
1466 if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1467 reset_type = ATH9K_RESET_POWER_ON;
1469 reset_type = ATH9K_RESET_COLD;
1472 if (!ath9k_hw_set_reset_reg(ah, reset_type))
1475 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1478 ah->chip_fullsleep = false;
1480 if (AR_SREV_9330(ah))
1481 ar9003_hw_internal_regulator_apply(ah);
1482 ath9k_hw_init_pll(ah, chan);
1483 ath9k_hw_set_rfmode(ah, chan);
1488 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1489 struct ath9k_channel *chan)
1491 struct ath_common *common = ath9k_hw_common(ah);
1494 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1495 bool band_switch, mode_diff;
1498 band_switch = (chan->channelFlags & (CHANNEL_2GHZ | CHANNEL_5GHZ)) !=
1499 (ah->curchan->channelFlags & (CHANNEL_2GHZ |
1501 mode_diff = (chan->chanmode != ah->curchan->chanmode);
1503 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1504 if (ath9k_hw_numtxpending(ah, qnum)) {
1505 ath_dbg(common, QUEUE,
1506 "Transmit frames pending on queue %d\n", qnum);
1511 if (!ath9k_hw_rfbus_req(ah)) {
1512 ath_err(common, "Could not kill baseband RX\n");
1516 if (edma && (band_switch || mode_diff)) {
1517 ath9k_hw_mark_phy_inactive(ah);
1520 ath9k_hw_init_pll(ah, NULL);
1522 if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
1523 ath_err(common, "Failed to do fast channel change\n");
1528 ath9k_hw_set_channel_regs(ah, chan);
1530 r = ath9k_hw_rf_set_freq(ah, chan);
1532 ath_err(common, "Failed to set channel\n");
1535 ath9k_hw_set_clockrate(ah);
1536 ath9k_hw_apply_txpower(ah, chan, false);
1537 ath9k_hw_rfbus_done(ah);
1539 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1540 ath9k_hw_set_delta_slope(ah, chan);
1542 ath9k_hw_spur_mitigate_freq(ah, chan);
1544 if (edma && (band_switch || mode_diff)) {
1545 ah->ah_flags |= AH_FASTCC;
1546 if (band_switch || ini_reloaded)
1547 ah->eep_ops->set_board_values(ah, chan);
1549 ath9k_hw_init_bb(ah, chan);
1551 if (band_switch || ini_reloaded)
1552 ath9k_hw_init_cal(ah, chan);
1553 ah->ah_flags &= ~AH_FASTCC;
1559 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1561 u32 gpio_mask = ah->gpio_mask;
1564 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1565 if (!(gpio_mask & 1))
1568 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1569 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1573 static bool ath9k_hw_check_dcs(u32 dma_dbg, u32 num_dcu_states,
1574 int *hang_state, int *hang_pos)
1576 static u32 dcu_chain_state[] = {5, 6, 9}; /* DCU chain stuck states */
1577 u32 chain_state, dcs_pos, i;
1579 for (dcs_pos = 0; dcs_pos < num_dcu_states; dcs_pos++) {
1580 chain_state = (dma_dbg >> (5 * dcs_pos)) & 0x1f;
1581 for (i = 0; i < 3; i++) {
1582 if (chain_state == dcu_chain_state[i]) {
1583 *hang_state = chain_state;
1584 *hang_pos = dcs_pos;
1592 #define DCU_COMPLETE_STATE 1
1593 #define DCU_COMPLETE_STATE_MASK 0x3
1594 #define NUM_STATUS_READS 50
1595 static bool ath9k_hw_detect_mac_hang(struct ath_hw *ah)
1597 u32 chain_state, comp_state, dcs_reg = AR_DMADBG_4;
1598 u32 i, hang_pos, hang_state, num_state = 6;
1600 comp_state = REG_READ(ah, AR_DMADBG_6);
1602 if ((comp_state & DCU_COMPLETE_STATE_MASK) != DCU_COMPLETE_STATE) {
1603 ath_dbg(ath9k_hw_common(ah), RESET,
1604 "MAC Hang signature not found at DCU complete\n");
1608 chain_state = REG_READ(ah, dcs_reg);
1609 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1610 goto hang_check_iter;
1612 dcs_reg = AR_DMADBG_5;
1614 chain_state = REG_READ(ah, dcs_reg);
1615 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1616 goto hang_check_iter;
1618 ath_dbg(ath9k_hw_common(ah), RESET,
1619 "MAC Hang signature 1 not found\n");
1623 ath_dbg(ath9k_hw_common(ah), RESET,
1624 "DCU registers: chain %08x complete %08x Hang: state %d pos %d\n",
1625 chain_state, comp_state, hang_state, hang_pos);
1627 for (i = 0; i < NUM_STATUS_READS; i++) {
1628 chain_state = REG_READ(ah, dcs_reg);
1629 chain_state = (chain_state >> (5 * hang_pos)) & 0x1f;
1630 comp_state = REG_READ(ah, AR_DMADBG_6);
1632 if (((comp_state & DCU_COMPLETE_STATE_MASK) !=
1633 DCU_COMPLETE_STATE) ||
1634 (chain_state != hang_state))
1638 ath_dbg(ath9k_hw_common(ah), RESET, "MAC Hang signature 1 found\n");
1643 bool ath9k_hw_check_alive(struct ath_hw *ah)
1648 if (AR_SREV_9300(ah))
1649 return !ath9k_hw_detect_mac_hang(ah);
1651 if (AR_SREV_9285_12_OR_LATER(ah))
1655 reg = REG_READ(ah, AR_OBS_BUS_1);
1657 if ((reg & 0x7E7FFFEF) == 0x00702400)
1660 switch (reg & 0x7E000B00) {
1668 } while (count-- > 0);
1672 EXPORT_SYMBOL(ath9k_hw_check_alive);
1675 * Fast channel change:
1676 * (Change synthesizer based on channel freq without resetting chip)
1680 * - Chip is just coming out of full sleep
1681 * - Channel to be set is same as current channel
1682 * - Channel flags are different, (eg.,moving from 2GHz to 5GHz channel)
1684 static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
1686 struct ath_common *common = ath9k_hw_common(ah);
1689 if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
1692 if (ah->chip_fullsleep)
1698 if (chan->channel == ah->curchan->channel)
1701 if ((ah->curchan->channelFlags | chan->channelFlags) &
1702 (CHANNEL_HALF | CHANNEL_QUARTER))
1705 if ((chan->channelFlags & CHANNEL_ALL) !=
1706 (ah->curchan->channelFlags & CHANNEL_ALL))
1709 if (!ath9k_hw_check_alive(ah))
1713 * For AR9462, make sure that calibration data for
1714 * re-using are present.
1716 if (AR_SREV_9462(ah) && (ah->caldata &&
1717 (!ah->caldata->done_txiqcal_once ||
1718 !ah->caldata->done_txclcal_once ||
1719 !ah->caldata->rtt_done)))
1722 ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
1723 ah->curchan->channel, chan->channel);
1725 ret = ath9k_hw_channel_change(ah, chan);
1729 ath9k_hw_loadnf(ah, ah->curchan);
1730 ath9k_hw_start_nfcal(ah, true);
1732 if (ath9k_hw_mci_is_enabled(ah))
1733 ar9003_mci_2g5g_switch(ah, false);
1735 if (AR_SREV_9271(ah))
1736 ar9002_hw_load_ani_reg(ah, chan);
1743 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1744 struct ath9k_hw_cal_data *caldata, bool fastcc)
1746 struct ath_common *common = ath9k_hw_common(ah);
1752 bool start_mci_reset = false;
1753 bool save_fullsleep = ah->chip_fullsleep;
1755 if (ath9k_hw_mci_is_enabled(ah)) {
1756 start_mci_reset = ar9003_mci_start_reset(ah, chan);
1757 if (start_mci_reset)
1761 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1764 if (ah->curchan && !ah->chip_fullsleep)
1765 ath9k_hw_getnf(ah, ah->curchan);
1767 ah->caldata = caldata;
1769 (chan->channel != caldata->channel ||
1770 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1771 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1772 /* Operating channel changed, reset channel calibration data */
1773 memset(caldata, 0, sizeof(*caldata));
1774 ath9k_init_nfcal_hist_buffer(ah, chan);
1775 } else if (caldata) {
1776 caldata->paprd_packet_sent = false;
1778 ah->noise = ath9k_hw_getchan_noise(ah, chan);
1781 r = ath9k_hw_do_fastcc(ah, chan);
1786 if (ath9k_hw_mci_is_enabled(ah))
1787 ar9003_mci_stop_bt(ah, save_fullsleep);
1789 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1790 if (saveDefAntenna == 0)
1793 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1795 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1796 if (AR_SREV_9100(ah) ||
1797 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1798 tsf = ath9k_hw_gettsf64(ah);
1800 saveLedState = REG_READ(ah, AR_CFG_LED) &
1801 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1802 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1804 ath9k_hw_mark_phy_inactive(ah);
1806 ah->paprd_table_write_done = false;
1808 /* Only required on the first reset */
1809 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1811 AR9271_RESET_POWER_DOWN_CONTROL,
1812 AR9271_RADIO_RF_RST);
1816 if (!ath9k_hw_chip_reset(ah, chan)) {
1817 ath_err(common, "Chip reset failed\n");
1821 /* Only required on the first reset */
1822 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1823 ah->htc_reset_init = false;
1825 AR9271_RESET_POWER_DOWN_CONTROL,
1826 AR9271_GATE_MAC_CTL);
1832 ath9k_hw_settsf64(ah, tsf);
1834 if (AR_SREV_9280_20_OR_LATER(ah))
1835 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1837 if (!AR_SREV_9300_20_OR_LATER(ah))
1838 ar9002_hw_enable_async_fifo(ah);
1840 r = ath9k_hw_process_ini(ah, chan);
1844 if (ath9k_hw_mci_is_enabled(ah))
1845 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
1848 * Some AR91xx SoC devices frequently fail to accept TSF writes
1849 * right after the chip reset. When that happens, write a new
1850 * value after the initvals have been applied, with an offset
1851 * based on measured time difference
1853 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1855 ath9k_hw_settsf64(ah, tsf);
1858 /* Setup MFP options for CCMP */
1859 if (AR_SREV_9280_20_OR_LATER(ah)) {
1860 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1861 * frames when constructing CCMP AAD. */
1862 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1864 ah->sw_mgmt_crypto = false;
1865 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1866 /* Disable hardware crypto for management frames */
1867 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1868 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1869 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1870 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1871 ah->sw_mgmt_crypto = true;
1873 ah->sw_mgmt_crypto = true;
1875 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1876 ath9k_hw_set_delta_slope(ah, chan);
1878 ath9k_hw_spur_mitigate_freq(ah, chan);
1879 ah->eep_ops->set_board_values(ah, chan);
1881 ENABLE_REGWRITE_BUFFER(ah);
1883 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1884 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1886 | AR_STA_ID1_RTS_USE_DEF
1888 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1889 | ah->sta_id1_defaults);
1890 ath_hw_setbssidmask(common);
1891 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1892 ath9k_hw_write_associd(ah);
1893 REG_WRITE(ah, AR_ISR, ~0);
1894 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1896 REGWRITE_BUFFER_FLUSH(ah);
1898 ath9k_hw_set_operating_mode(ah, ah->opmode);
1900 r = ath9k_hw_rf_set_freq(ah, chan);
1904 ath9k_hw_set_clockrate(ah);
1906 ENABLE_REGWRITE_BUFFER(ah);
1908 for (i = 0; i < AR_NUM_DCU; i++)
1909 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1911 REGWRITE_BUFFER_FLUSH(ah);
1914 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1915 ath9k_hw_resettxqueue(ah, i);
1917 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1918 ath9k_hw_ani_cache_ini_regs(ah);
1919 ath9k_hw_init_qos(ah);
1921 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1922 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1924 ath9k_hw_init_global_settings(ah);
1926 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1927 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1928 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1929 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1930 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1931 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1932 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1935 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1937 ath9k_hw_set_dma(ah);
1939 if (!ath9k_hw_mci_is_enabled(ah))
1940 REG_WRITE(ah, AR_OBS, 8);
1942 if (ah->config.rx_intr_mitigation) {
1943 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1944 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1947 if (ah->config.tx_intr_mitigation) {
1948 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1949 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1952 ath9k_hw_init_bb(ah, chan);
1955 caldata->done_txiqcal_once = false;
1956 caldata->done_txclcal_once = false;
1958 if (!ath9k_hw_init_cal(ah, chan))
1961 if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
1964 ENABLE_REGWRITE_BUFFER(ah);
1966 ath9k_hw_restore_chainmask(ah);
1967 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1969 REGWRITE_BUFFER_FLUSH(ah);
1972 * For big endian systems turn on swapping for descriptors
1974 if (AR_SREV_9100(ah)) {
1976 mask = REG_READ(ah, AR_CFG);
1977 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1978 ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
1982 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1983 REG_WRITE(ah, AR_CFG, mask);
1984 ath_dbg(common, RESET, "Setting CFG 0x%x\n",
1985 REG_READ(ah, AR_CFG));
1988 if (common->bus_ops->ath_bus_type == ATH_USB) {
1989 /* Configure AR9271 target WLAN */
1990 if (AR_SREV_9271(ah))
1991 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1993 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1996 else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
1998 REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
2000 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
2004 if (ath9k_hw_btcoex_is_enabled(ah))
2005 ath9k_hw_btcoex_enable(ah);
2007 if (ath9k_hw_mci_is_enabled(ah))
2008 ar9003_mci_check_bt(ah);
2010 ath9k_hw_loadnf(ah, chan);
2011 ath9k_hw_start_nfcal(ah, true);
2013 if (AR_SREV_9300_20_OR_LATER(ah)) {
2014 ar9003_hw_bb_watchdog_config(ah);
2016 ar9003_hw_disable_phy_restart(ah);
2019 ath9k_hw_apply_gpio_override(ah);
2023 EXPORT_SYMBOL(ath9k_hw_reset);
2025 /******************************/
2026 /* Power Management (Chipset) */
2027 /******************************/
2030 * Notify Power Mgt is disabled in self-generated frames.
2031 * If requested, force chip to sleep.
2033 static void ath9k_set_power_sleep(struct ath_hw *ah)
2035 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2037 if (AR_SREV_9462(ah)) {
2038 REG_CLR_BIT(ah, AR_TIMER_MODE, 0xff);
2039 REG_CLR_BIT(ah, AR_NDP2_TIMER_MODE, 0xff);
2040 REG_CLR_BIT(ah, AR_SLP32_INC, 0xfffff);
2041 /* xxx Required for WLAN only case ? */
2042 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
2047 * Clear the RTC force wake bit to allow the
2048 * mac to go to sleep.
2050 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2052 if (ath9k_hw_mci_is_enabled(ah))
2055 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
2056 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
2058 /* Shutdown chip. Active low */
2059 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
2060 REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
2064 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
2065 if (AR_SREV_9300_20_OR_LATER(ah))
2066 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2070 * Notify Power Management is enabled in self-generating
2071 * frames. If request, set power mode of chip to
2072 * auto/normal. Duration in units of 128us (1/8 TU).
2074 static void ath9k_set_power_network_sleep(struct ath_hw *ah)
2076 struct ath9k_hw_capabilities *pCap = &ah->caps;
2078 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2080 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
2081 /* Set WakeOnInterrupt bit; clear ForceWake bit */
2082 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
2083 AR_RTC_FORCE_WAKE_ON_INT);
2086 /* When chip goes into network sleep, it could be waken
2087 * up by MCI_INT interrupt caused by BT's HW messages
2088 * (LNA_xxx, CONT_xxx) which chould be in a very fast
2089 * rate (~100us). This will cause chip to leave and
2090 * re-enter network sleep mode frequently, which in
2091 * consequence will have WLAN MCI HW to generate lots of
2092 * SYS_WAKING and SYS_SLEEPING messages which will make
2093 * BT CPU to busy to process.
2095 if (ath9k_hw_mci_is_enabled(ah))
2096 REG_CLR_BIT(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
2097 AR_MCI_INTERRUPT_RX_HW_MSG_MASK);
2099 * Clear the RTC force wake bit to allow the
2100 * mac to go to sleep.
2102 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2104 if (ath9k_hw_mci_is_enabled(ah))
2108 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
2109 if (AR_SREV_9300_20_OR_LATER(ah))
2110 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2113 static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
2118 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
2119 if (AR_SREV_9300_20_OR_LATER(ah)) {
2120 REG_WRITE(ah, AR_WA, ah->WARegVal);
2124 if ((REG_READ(ah, AR_RTC_STATUS) &
2125 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
2126 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
2129 if (!AR_SREV_9300_20_OR_LATER(ah))
2130 ath9k_hw_init_pll(ah, NULL);
2132 if (AR_SREV_9100(ah))
2133 REG_SET_BIT(ah, AR_RTC_RESET,
2136 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2137 AR_RTC_FORCE_WAKE_EN);
2140 if (ath9k_hw_mci_is_enabled(ah))
2141 ar9003_mci_set_power_awake(ah);
2143 for (i = POWER_UP_TIME / 50; i > 0; i--) {
2144 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
2145 if (val == AR_RTC_STATUS_ON)
2148 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2149 AR_RTC_FORCE_WAKE_EN);
2152 ath_err(ath9k_hw_common(ah),
2153 "Failed to wakeup in %uus\n",
2154 POWER_UP_TIME / 20);
2158 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2163 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
2165 struct ath_common *common = ath9k_hw_common(ah);
2167 static const char *modes[] = {
2174 if (ah->power_mode == mode)
2177 ath_dbg(common, RESET, "%s -> %s\n",
2178 modes[ah->power_mode], modes[mode]);
2181 case ATH9K_PM_AWAKE:
2182 status = ath9k_hw_set_power_awake(ah);
2184 case ATH9K_PM_FULL_SLEEP:
2185 if (ath9k_hw_mci_is_enabled(ah))
2186 ar9003_mci_set_full_sleep(ah);
2188 ath9k_set_power_sleep(ah);
2189 ah->chip_fullsleep = true;
2191 case ATH9K_PM_NETWORK_SLEEP:
2192 ath9k_set_power_network_sleep(ah);
2195 ath_err(common, "Unknown power mode %u\n", mode);
2198 ah->power_mode = mode;
2201 * XXX: If this warning never comes up after a while then
2202 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
2203 * ath9k_hw_setpower() return type void.
2206 if (!(ah->ah_flags & AH_UNPLUGGED))
2207 ATH_DBG_WARN_ON_ONCE(!status);
2211 EXPORT_SYMBOL(ath9k_hw_setpower);
2213 /*******************/
2214 /* Beacon Handling */
2215 /*******************/
2217 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2221 ENABLE_REGWRITE_BUFFER(ah);
2223 switch (ah->opmode) {
2224 case NL80211_IFTYPE_ADHOC:
2225 case NL80211_IFTYPE_MESH_POINT:
2226 REG_SET_BIT(ah, AR_TXCFG,
2227 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2228 REG_WRITE(ah, AR_NEXT_NDP_TIMER, next_beacon +
2229 TU_TO_USEC(ah->atim_window ? ah->atim_window : 1));
2230 flags |= AR_NDP_TIMER_EN;
2231 case NL80211_IFTYPE_AP:
2232 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
2233 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
2234 TU_TO_USEC(ah->config.dma_beacon_response_time));
2235 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
2236 TU_TO_USEC(ah->config.sw_beacon_response_time));
2238 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2241 ath_dbg(ath9k_hw_common(ah), BEACON,
2242 "%s: unsupported opmode: %d\n", __func__, ah->opmode);
2247 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
2248 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
2249 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
2250 REG_WRITE(ah, AR_NDP_PERIOD, beacon_period);
2252 REGWRITE_BUFFER_FLUSH(ah);
2254 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2256 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2258 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2259 const struct ath9k_beacon_state *bs)
2261 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2262 struct ath9k_hw_capabilities *pCap = &ah->caps;
2263 struct ath_common *common = ath9k_hw_common(ah);
2265 ENABLE_REGWRITE_BUFFER(ah);
2267 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
2269 REG_WRITE(ah, AR_BEACON_PERIOD,
2270 TU_TO_USEC(bs->bs_intval));
2271 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
2272 TU_TO_USEC(bs->bs_intval));
2274 REGWRITE_BUFFER_FLUSH(ah);
2276 REG_RMW_FIELD(ah, AR_RSSI_THR,
2277 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2279 beaconintval = bs->bs_intval;
2281 if (bs->bs_sleepduration > beaconintval)
2282 beaconintval = bs->bs_sleepduration;
2284 dtimperiod = bs->bs_dtimperiod;
2285 if (bs->bs_sleepduration > dtimperiod)
2286 dtimperiod = bs->bs_sleepduration;
2288 if (beaconintval == dtimperiod)
2289 nextTbtt = bs->bs_nextdtim;
2291 nextTbtt = bs->bs_nexttbtt;
2293 ath_dbg(common, BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2294 ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
2295 ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
2296 ath_dbg(common, BEACON, "DTIM period %d\n", dtimperiod);
2298 ENABLE_REGWRITE_BUFFER(ah);
2300 REG_WRITE(ah, AR_NEXT_DTIM,
2301 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
2302 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
2304 REG_WRITE(ah, AR_SLEEP1,
2305 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2306 | AR_SLEEP1_ASSUME_DTIM);
2308 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2309 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2311 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2313 REG_WRITE(ah, AR_SLEEP2,
2314 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2316 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
2317 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
2319 REGWRITE_BUFFER_FLUSH(ah);
2321 REG_SET_BIT(ah, AR_TIMER_MODE,
2322 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2325 /* TSF Out of Range Threshold */
2326 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2328 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2330 /*******************/
2331 /* HW Capabilities */
2332 /*******************/
2334 static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
2336 eeprom_chainmask &= chip_chainmask;
2337 if (eeprom_chainmask)
2338 return eeprom_chainmask;
2340 return chip_chainmask;
2344 * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
2345 * @ah: the atheros hardware data structure
2347 * We enable DFS support upstream on chipsets which have passed a series
2348 * of tests. The testing requirements are going to be documented. Desired
2349 * test requirements are documented at:
2351 * http://wireless.kernel.org/en/users/Drivers/ath9k/dfs
2353 * Once a new chipset gets properly tested an individual commit can be used
2354 * to document the testing for DFS for that chipset.
2356 static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
2359 switch (ah->hw_version.macVersion) {
2360 /* AR9580 will likely be our first target to get testing on */
2361 case AR_SREV_VERSION_9580:
2367 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2369 struct ath9k_hw_capabilities *pCap = &ah->caps;
2370 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2371 struct ath_common *common = ath9k_hw_common(ah);
2372 unsigned int chip_chainmask;
2375 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
2377 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2378 regulatory->current_rd = eeval;
2380 if (ah->opmode != NL80211_IFTYPE_AP &&
2381 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2382 if (regulatory->current_rd == 0x64 ||
2383 regulatory->current_rd == 0x65)
2384 regulatory->current_rd += 5;
2385 else if (regulatory->current_rd == 0x41)
2386 regulatory->current_rd = 0x43;
2387 ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
2388 regulatory->current_rd);
2391 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2392 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
2394 "no band has been marked as supported in EEPROM\n");
2398 if (eeval & AR5416_OPFLAGS_11A)
2399 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
2401 if (eeval & AR5416_OPFLAGS_11G)
2402 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
2404 if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah))
2406 else if (AR_SREV_9462(ah))
2408 else if (!AR_SREV_9280_20_OR_LATER(ah))
2410 else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
2415 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2417 * For AR9271 we will temporarilly uses the rx chainmax as read from
2420 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2421 !(eeval & AR5416_OPFLAGS_11A) &&
2422 !(AR_SREV_9271(ah)))
2423 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2424 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2425 else if (AR_SREV_9100(ah))
2426 pCap->rx_chainmask = 0x7;
2428 /* Use rx_chainmask from EEPROM. */
2429 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2431 pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
2432 pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
2433 ah->txchainmask = pCap->tx_chainmask;
2434 ah->rxchainmask = pCap->rx_chainmask;
2436 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2438 /* enable key search for every frame in an aggregate */
2439 if (AR_SREV_9300_20_OR_LATER(ah))
2440 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
2442 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
2444 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
2445 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2447 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2449 if (AR_SREV_9271(ah))
2450 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2451 else if (AR_DEVID_7010(ah))
2452 pCap->num_gpio_pins = AR7010_NUM_GPIO;
2453 else if (AR_SREV_9300_20_OR_LATER(ah))
2454 pCap->num_gpio_pins = AR9300_NUM_GPIO;
2455 else if (AR_SREV_9287_11_OR_LATER(ah))
2456 pCap->num_gpio_pins = AR9287_NUM_GPIO;
2457 else if (AR_SREV_9285_12_OR_LATER(ah))
2458 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2459 else if (AR_SREV_9280_20_OR_LATER(ah))
2460 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2462 pCap->num_gpio_pins = AR_NUM_GPIO;
2464 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
2465 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2467 pCap->rts_aggr_limit = (8 * 1024);
2469 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2470 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2471 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2473 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2474 ah->rfkill_polarity =
2475 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2477 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2480 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
2481 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2483 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2485 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2486 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2488 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2490 if (AR_SREV_9300_20_OR_LATER(ah)) {
2491 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
2492 if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah))
2493 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
2495 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2496 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2497 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2498 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2499 pCap->txs_len = sizeof(struct ar9003_txs);
2501 pCap->tx_desc_len = sizeof(struct ath_desc);
2502 if (AR_SREV_9280_20(ah))
2503 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
2506 if (AR_SREV_9300_20_OR_LATER(ah))
2507 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
2509 if (AR_SREV_9300_20_OR_LATER(ah))
2510 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
2512 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
2513 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
2515 if (AR_SREV_9285(ah))
2516 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
2518 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2519 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
2520 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2522 if (AR_SREV_9300_20_OR_LATER(ah)) {
2523 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
2524 pCap->hw_caps |= ATH9K_HW_CAP_APM;
2528 if (AR_SREV_9330(ah) || AR_SREV_9485(ah)) {
2529 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2531 * enable the diversity-combining algorithm only when
2532 * both enable_lna_div and enable_fast_div are set
2533 * Table for Diversity
2534 * ant_div_alt_lnaconf bit 0-1
2535 * ant_div_main_lnaconf bit 2-3
2536 * ant_div_alt_gaintb bit 4
2537 * ant_div_main_gaintb bit 5
2538 * enable_ant_div_lnadiv bit 6
2539 * enable_ant_fast_div bit 7
2541 if ((ant_div_ctl1 >> 0x6) == 0x3)
2542 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2545 if (AR_SREV_9485_10(ah)) {
2546 pCap->pcie_lcr_extsync_en = true;
2547 pCap->pcie_lcr_offset = 0x80;
2550 if (ath9k_hw_dfs_tested(ah))
2551 pCap->hw_caps |= ATH9K_HW_CAP_DFS;
2553 tx_chainmask = pCap->tx_chainmask;
2554 rx_chainmask = pCap->rx_chainmask;
2555 while (tx_chainmask || rx_chainmask) {
2556 if (tx_chainmask & BIT(0))
2557 pCap->max_txchains++;
2558 if (rx_chainmask & BIT(0))
2559 pCap->max_rxchains++;
2565 if (AR_SREV_9300_20_OR_LATER(ah)) {
2566 ah->enabled_cals |= TX_IQ_CAL;
2567 if (AR_SREV_9485_OR_LATER(ah))
2568 ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
2571 if (AR_SREV_9462(ah)) {
2573 if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
2574 pCap->hw_caps |= ATH9K_HW_CAP_MCI;
2576 if (AR_SREV_9462_20(ah))
2577 pCap->hw_caps |= ATH9K_HW_CAP_RTT;
2582 if (AR_SREV_9280_20_OR_LATER(ah)) {
2583 pCap->hw_caps |= ATH9K_HW_WOW_DEVICE_CAPABLE |
2584 ATH9K_HW_WOW_PATTERN_MATCH_EXACT;
2586 if (AR_SREV_9280(ah))
2587 pCap->hw_caps |= ATH9K_HW_WOW_PATTERN_MATCH_DWORD;
2593 /****************************/
2594 /* GPIO / RFKILL / Antennae */
2595 /****************************/
2597 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2601 u32 gpio_shift, tmp;
2604 addr = AR_GPIO_OUTPUT_MUX3;
2606 addr = AR_GPIO_OUTPUT_MUX2;
2608 addr = AR_GPIO_OUTPUT_MUX1;
2610 gpio_shift = (gpio % 6) * 5;
2612 if (AR_SREV_9280_20_OR_LATER(ah)
2613 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2614 REG_RMW(ah, addr, (type << gpio_shift),
2615 (0x1f << gpio_shift));
2617 tmp = REG_READ(ah, addr);
2618 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2619 tmp &= ~(0x1f << gpio_shift);
2620 tmp |= (type << gpio_shift);
2621 REG_WRITE(ah, addr, tmp);
2625 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2629 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2631 if (AR_DEVID_7010(ah)) {
2633 REG_RMW(ah, AR7010_GPIO_OE,
2634 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2635 (AR7010_GPIO_OE_MASK << gpio_shift));
2639 gpio_shift = gpio << 1;
2642 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2643 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2645 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2647 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2649 #define MS_REG_READ(x, y) \
2650 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2652 if (gpio >= ah->caps.num_gpio_pins)
2655 if (AR_DEVID_7010(ah)) {
2657 val = REG_READ(ah, AR7010_GPIO_IN);
2658 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2659 } else if (AR_SREV_9300_20_OR_LATER(ah))
2660 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2661 AR_GPIO_BIT(gpio)) != 0;
2662 else if (AR_SREV_9271(ah))
2663 return MS_REG_READ(AR9271, gpio) != 0;
2664 else if (AR_SREV_9287_11_OR_LATER(ah))
2665 return MS_REG_READ(AR9287, gpio) != 0;
2666 else if (AR_SREV_9285_12_OR_LATER(ah))
2667 return MS_REG_READ(AR9285, gpio) != 0;
2668 else if (AR_SREV_9280_20_OR_LATER(ah))
2669 return MS_REG_READ(AR928X, gpio) != 0;
2671 return MS_REG_READ(AR, gpio) != 0;
2673 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2675 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2680 if (AR_DEVID_7010(ah)) {
2682 REG_RMW(ah, AR7010_GPIO_OE,
2683 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2684 (AR7010_GPIO_OE_MASK << gpio_shift));
2688 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2689 gpio_shift = 2 * gpio;
2692 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2693 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2695 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2697 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2699 if (AR_DEVID_7010(ah)) {
2701 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2706 if (AR_SREV_9271(ah))
2709 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2712 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2714 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2716 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2718 EXPORT_SYMBOL(ath9k_hw_setantenna);
2720 /*********************/
2721 /* General Operation */
2722 /*********************/
2724 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2726 u32 bits = REG_READ(ah, AR_RX_FILTER);
2727 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2729 if (phybits & AR_PHY_ERR_RADAR)
2730 bits |= ATH9K_RX_FILTER_PHYRADAR;
2731 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2732 bits |= ATH9K_RX_FILTER_PHYERR;
2736 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2738 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2742 ENABLE_REGWRITE_BUFFER(ah);
2744 if (AR_SREV_9462(ah))
2745 bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
2747 REG_WRITE(ah, AR_RX_FILTER, bits);
2750 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2751 phybits |= AR_PHY_ERR_RADAR;
2752 if (bits & ATH9K_RX_FILTER_PHYERR)
2753 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2754 REG_WRITE(ah, AR_PHY_ERR, phybits);
2757 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2759 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2761 REGWRITE_BUFFER_FLUSH(ah);
2763 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2765 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2767 if (ath9k_hw_mci_is_enabled(ah))
2768 ar9003_mci_bt_gain_ctrl(ah);
2770 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2773 ath9k_hw_init_pll(ah, NULL);
2774 ah->htc_reset_init = true;
2777 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2779 bool ath9k_hw_disable(struct ath_hw *ah)
2781 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2784 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2787 ath9k_hw_init_pll(ah, NULL);
2790 EXPORT_SYMBOL(ath9k_hw_disable);
2792 static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
2794 enum eeprom_param gain_param;
2796 if (IS_CHAN_2GHZ(chan))
2797 gain_param = EEP_ANTENNA_GAIN_2G;
2799 gain_param = EEP_ANTENNA_GAIN_5G;
2801 return ah->eep_ops->get_eeprom(ah, gain_param);
2804 void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
2807 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2808 struct ieee80211_channel *channel;
2809 int chan_pwr, new_pwr, max_gain;
2810 int ant_gain, ant_reduction = 0;
2815 channel = chan->chan;
2816 chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
2817 new_pwr = min_t(int, chan_pwr, reg->power_limit);
2818 max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
2820 ant_gain = get_antenna_gain(ah, chan);
2821 if (ant_gain > max_gain)
2822 ant_reduction = ant_gain - max_gain;
2824 ah->eep_ops->set_txpower(ah, chan,
2825 ath9k_regd_get_ctl(reg, chan),
2826 ant_reduction, new_pwr, test);
2829 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2831 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2832 struct ath9k_channel *chan = ah->curchan;
2833 struct ieee80211_channel *channel = chan->chan;
2835 reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
2837 channel->max_power = MAX_RATE_POWER / 2;
2839 ath9k_hw_apply_txpower(ah, chan, test);
2842 channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
2844 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2846 void ath9k_hw_setopmode(struct ath_hw *ah)
2848 ath9k_hw_set_operating_mode(ah, ah->opmode);
2850 EXPORT_SYMBOL(ath9k_hw_setopmode);
2852 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2854 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2855 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2857 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2859 void ath9k_hw_write_associd(struct ath_hw *ah)
2861 struct ath_common *common = ath9k_hw_common(ah);
2863 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2864 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2865 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2867 EXPORT_SYMBOL(ath9k_hw_write_associd);
2869 #define ATH9K_MAX_TSF_READ 10
2871 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2873 u32 tsf_lower, tsf_upper1, tsf_upper2;
2876 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2877 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2878 tsf_lower = REG_READ(ah, AR_TSF_L32);
2879 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2880 if (tsf_upper2 == tsf_upper1)
2882 tsf_upper1 = tsf_upper2;
2885 WARN_ON( i == ATH9K_MAX_TSF_READ );
2887 return (((u64)tsf_upper1 << 32) | tsf_lower);
2889 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2891 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2893 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2894 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2896 EXPORT_SYMBOL(ath9k_hw_settsf64);
2898 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2900 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2901 AH_TSF_WRITE_TIMEOUT))
2902 ath_dbg(ath9k_hw_common(ah), RESET,
2903 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2905 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2907 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2909 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, bool set)
2912 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2914 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2916 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2918 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2920 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2923 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2924 macmode = AR_2040_JOINED_RX_CLEAR;
2928 REG_WRITE(ah, AR_2040_MODE, macmode);
2931 /* HW Generic timers configuration */
2933 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2935 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2936 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2937 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2938 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2939 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2940 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
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_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2944 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2945 AR_NDP2_TIMER_MODE, 0x0002},
2946 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2947 AR_NDP2_TIMER_MODE, 0x0004},
2948 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2949 AR_NDP2_TIMER_MODE, 0x0008},
2950 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2951 AR_NDP2_TIMER_MODE, 0x0010},
2952 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2953 AR_NDP2_TIMER_MODE, 0x0020},
2954 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2955 AR_NDP2_TIMER_MODE, 0x0040},
2956 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2957 AR_NDP2_TIMER_MODE, 0x0080}
2960 /* HW generic timer primitives */
2962 /* compute and clear index of rightmost 1 */
2963 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2973 return timer_table->gen_timer_index[b];
2976 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2978 return REG_READ(ah, AR_TSF_L32);
2980 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2982 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2983 void (*trigger)(void *),
2984 void (*overflow)(void *),
2988 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2989 struct ath_gen_timer *timer;
2991 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2993 if (timer == NULL) {
2994 ath_err(ath9k_hw_common(ah),
2995 "Failed to allocate memory for hw timer[%d]\n",
3000 /* allocate a hardware generic timer slot */
3001 timer_table->timers[timer_index] = timer;
3002 timer->index = timer_index;
3003 timer->trigger = trigger;
3004 timer->overflow = overflow;
3009 EXPORT_SYMBOL(ath_gen_timer_alloc);
3011 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
3012 struct ath_gen_timer *timer,
3016 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3017 u32 tsf, timer_next;
3019 BUG_ON(!timer_period);
3021 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
3023 tsf = ath9k_hw_gettsf32(ah);
3025 timer_next = tsf + trig_timeout;
3027 ath_dbg(ath9k_hw_common(ah), HWTIMER,
3028 "current tsf %x period %x timer_next %x\n",
3029 tsf, timer_period, timer_next);
3032 * Program generic timer registers
3034 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
3036 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
3038 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3039 gen_tmr_configuration[timer->index].mode_mask);
3041 if (AR_SREV_9462(ah)) {
3043 * Starting from AR9462, each generic timer can select which tsf
3044 * to use. But we still follow the old rule, 0 - 7 use tsf and
3047 if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
3048 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3049 (1 << timer->index));
3051 REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3052 (1 << timer->index));
3055 /* Enable both trigger and thresh interrupt masks */
3056 REG_SET_BIT(ah, AR_IMR_S5,
3057 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3058 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3060 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
3062 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
3064 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3066 if ((timer->index < AR_FIRST_NDP_TIMER) ||
3067 (timer->index >= ATH_MAX_GEN_TIMER)) {
3071 /* Clear generic timer enable bits. */
3072 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3073 gen_tmr_configuration[timer->index].mode_mask);
3075 /* Disable both trigger and thresh interrupt masks */
3076 REG_CLR_BIT(ah, AR_IMR_S5,
3077 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3078 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3080 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
3082 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
3084 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
3086 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3088 /* free the hardware generic timer slot */
3089 timer_table->timers[timer->index] = NULL;
3092 EXPORT_SYMBOL(ath_gen_timer_free);
3095 * Generic Timer Interrupts handling
3097 void ath_gen_timer_isr(struct ath_hw *ah)
3099 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3100 struct ath_gen_timer *timer;
3101 struct ath_common *common = ath9k_hw_common(ah);
3102 u32 trigger_mask, thresh_mask, index;
3104 /* get hardware generic timer interrupt status */
3105 trigger_mask = ah->intr_gen_timer_trigger;
3106 thresh_mask = ah->intr_gen_timer_thresh;
3107 trigger_mask &= timer_table->timer_mask.val;
3108 thresh_mask &= timer_table->timer_mask.val;
3110 trigger_mask &= ~thresh_mask;
3112 while (thresh_mask) {
3113 index = rightmost_index(timer_table, &thresh_mask);
3114 timer = timer_table->timers[index];
3116 ath_dbg(common, HWTIMER, "TSF overflow for Gen timer %d\n",
3118 timer->overflow(timer->arg);
3121 while (trigger_mask) {
3122 index = rightmost_index(timer_table, &trigger_mask);
3123 timer = timer_table->timers[index];
3125 ath_dbg(common, HWTIMER,
3126 "Gen timer[%d] trigger\n", index);
3127 timer->trigger(timer->arg);
3130 EXPORT_SYMBOL(ath_gen_timer_isr);
3139 } ath_mac_bb_names[] = {
3140 /* Devices with external radios */
3141 { AR_SREV_VERSION_5416_PCI, "5416" },
3142 { AR_SREV_VERSION_5416_PCIE, "5418" },
3143 { AR_SREV_VERSION_9100, "9100" },
3144 { AR_SREV_VERSION_9160, "9160" },
3145 /* Single-chip solutions */
3146 { AR_SREV_VERSION_9280, "9280" },
3147 { AR_SREV_VERSION_9285, "9285" },
3148 { AR_SREV_VERSION_9287, "9287" },
3149 { AR_SREV_VERSION_9271, "9271" },
3150 { AR_SREV_VERSION_9300, "9300" },
3151 { AR_SREV_VERSION_9330, "9330" },
3152 { AR_SREV_VERSION_9340, "9340" },
3153 { AR_SREV_VERSION_9485, "9485" },
3154 { AR_SREV_VERSION_9462, "9462" },
3155 { AR_SREV_VERSION_9550, "9550" },
3158 /* For devices with external radios */
3162 } ath_rf_names[] = {
3164 { AR_RAD5133_SREV_MAJOR, "5133" },
3165 { AR_RAD5122_SREV_MAJOR, "5122" },
3166 { AR_RAD2133_SREV_MAJOR, "2133" },
3167 { AR_RAD2122_SREV_MAJOR, "2122" }
3171 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3173 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3177 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3178 if (ath_mac_bb_names[i].version == mac_bb_version) {
3179 return ath_mac_bb_names[i].name;
3187 * Return the RF name. "????" is returned if the RF is unknown.
3188 * Used for devices with external radios.
3190 static const char *ath9k_hw_rf_name(u16 rf_version)
3194 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3195 if (ath_rf_names[i].version == rf_version) {
3196 return ath_rf_names[i].name;
3203 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3207 /* chipsets >= AR9280 are single-chip */
3208 if (AR_SREV_9280_20_OR_LATER(ah)) {
3209 used = snprintf(hw_name, len,
3210 "Atheros AR%s Rev:%x",
3211 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3212 ah->hw_version.macRev);
3215 used = snprintf(hw_name, len,
3216 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3217 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3218 ah->hw_version.macRev,
3219 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
3220 AR_RADIO_SREV_MAJOR)),
3221 ah->hw_version.phyRev);
3224 hw_name[used] = '\0';
3226 EXPORT_SYMBOL(ath9k_hw_name);