2 * Copyright (c) 2008-2010 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <linux/slab.h>
19 #include <asm/unaligned.h>
24 #include "ar9003_mac.h"
26 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
28 MODULE_AUTHOR("Atheros Communications");
29 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
30 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
31 MODULE_LICENSE("Dual BSD/GPL");
33 static int __init ath9k_init(void)
37 module_init(ath9k_init);
39 static void __exit ath9k_exit(void)
43 module_exit(ath9k_exit);
45 /* Private hardware callbacks */
47 static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
49 ath9k_hw_private_ops(ah)->init_cal_settings(ah);
52 static void ath9k_hw_init_mode_regs(struct ath_hw *ah)
54 ath9k_hw_private_ops(ah)->init_mode_regs(ah);
57 static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
58 struct ath9k_channel *chan)
60 return ath9k_hw_private_ops(ah)->compute_pll_control(ah, chan);
63 static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah)
65 if (!ath9k_hw_private_ops(ah)->init_mode_gain_regs)
68 ath9k_hw_private_ops(ah)->init_mode_gain_regs(ah);
71 static void ath9k_hw_ani_cache_ini_regs(struct ath_hw *ah)
73 /* You will not have this callback if using the old ANI */
74 if (!ath9k_hw_private_ops(ah)->ani_cache_ini_regs)
77 ath9k_hw_private_ops(ah)->ani_cache_ini_regs(ah);
80 /********************/
81 /* Helper Functions */
82 /********************/
84 static void ath9k_hw_set_clockrate(struct ath_hw *ah)
86 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
87 struct ath_common *common = ath9k_hw_common(ah);
88 unsigned int clockrate;
90 if (!ah->curchan) /* should really check for CCK instead */
91 clockrate = ATH9K_CLOCK_RATE_CCK;
92 else if (conf->channel->band == IEEE80211_BAND_2GHZ)
93 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
94 else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
95 clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
97 clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
99 if (conf_is_ht40(conf))
102 common->clockrate = clockrate;
105 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
107 struct ath_common *common = ath9k_hw_common(ah);
109 return usecs * common->clockrate;
112 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
116 BUG_ON(timeout < AH_TIME_QUANTUM);
118 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
119 if ((REG_READ(ah, reg) & mask) == val)
122 udelay(AH_TIME_QUANTUM);
125 ath_dbg(ath9k_hw_common(ah), ATH_DBG_ANY,
126 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
127 timeout, reg, REG_READ(ah, reg), mask, val);
131 EXPORT_SYMBOL(ath9k_hw_wait);
133 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
138 for (i = 0, retval = 0; i < n; i++) {
139 retval = (retval << 1) | (val & 1);
145 bool ath9k_get_channel_edges(struct ath_hw *ah,
149 struct ath9k_hw_capabilities *pCap = &ah->caps;
151 if (flags & CHANNEL_5GHZ) {
152 *low = pCap->low_5ghz_chan;
153 *high = pCap->high_5ghz_chan;
156 if ((flags & CHANNEL_2GHZ)) {
157 *low = pCap->low_2ghz_chan;
158 *high = pCap->high_2ghz_chan;
164 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
166 u32 frameLen, u16 rateix,
169 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
175 case WLAN_RC_PHY_CCK:
176 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
179 numBits = frameLen << 3;
180 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
182 case WLAN_RC_PHY_OFDM:
183 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
184 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
185 numBits = OFDM_PLCP_BITS + (frameLen << 3);
186 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
187 txTime = OFDM_SIFS_TIME_QUARTER
188 + OFDM_PREAMBLE_TIME_QUARTER
189 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
190 } else if (ah->curchan &&
191 IS_CHAN_HALF_RATE(ah->curchan)) {
192 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
193 numBits = OFDM_PLCP_BITS + (frameLen << 3);
194 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
195 txTime = OFDM_SIFS_TIME_HALF +
196 OFDM_PREAMBLE_TIME_HALF
197 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
199 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
200 numBits = OFDM_PLCP_BITS + (frameLen << 3);
201 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
202 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
203 + (numSymbols * OFDM_SYMBOL_TIME);
207 ath_err(ath9k_hw_common(ah),
208 "Unknown phy %u (rate ix %u)\n", phy, rateix);
215 EXPORT_SYMBOL(ath9k_hw_computetxtime);
217 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
218 struct ath9k_channel *chan,
219 struct chan_centers *centers)
223 if (!IS_CHAN_HT40(chan)) {
224 centers->ctl_center = centers->ext_center =
225 centers->synth_center = chan->channel;
229 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
230 (chan->chanmode == CHANNEL_G_HT40PLUS)) {
231 centers->synth_center =
232 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
235 centers->synth_center =
236 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
240 centers->ctl_center =
241 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
242 /* 25 MHz spacing is supported by hw but not on upper layers */
243 centers->ext_center =
244 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
251 static void ath9k_hw_read_revisions(struct ath_hw *ah)
255 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
258 val = REG_READ(ah, AR_SREV);
259 ah->hw_version.macVersion =
260 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
261 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
262 ah->is_pciexpress = (val & AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
264 if (!AR_SREV_9100(ah))
265 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
267 ah->hw_version.macRev = val & AR_SREV_REVISION;
269 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
270 ah->is_pciexpress = true;
274 /************************************/
275 /* HW Attach, Detach, Init Routines */
276 /************************************/
278 static void ath9k_hw_disablepcie(struct ath_hw *ah)
280 if (!AR_SREV_5416(ah))
283 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
284 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
285 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
286 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
287 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
288 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
289 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
290 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
291 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
293 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
296 /* This should work for all families including legacy */
297 static bool ath9k_hw_chip_test(struct ath_hw *ah)
299 struct ath_common *common = ath9k_hw_common(ah);
300 u32 regAddr[2] = { AR_STA_ID0 };
302 static const u32 patternData[4] = {
303 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
307 if (!AR_SREV_9300_20_OR_LATER(ah)) {
309 regAddr[1] = AR_PHY_BASE + (8 << 2);
313 for (i = 0; i < loop_max; i++) {
314 u32 addr = regAddr[i];
317 regHold[i] = REG_READ(ah, addr);
318 for (j = 0; j < 0x100; j++) {
319 wrData = (j << 16) | j;
320 REG_WRITE(ah, addr, wrData);
321 rdData = REG_READ(ah, addr);
322 if (rdData != wrData) {
324 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
325 addr, wrData, rdData);
329 for (j = 0; j < 4; j++) {
330 wrData = patternData[j];
331 REG_WRITE(ah, addr, wrData);
332 rdData = REG_READ(ah, addr);
333 if (wrData != rdData) {
335 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
336 addr, wrData, rdData);
340 REG_WRITE(ah, regAddr[i], regHold[i]);
347 static void ath9k_hw_init_config(struct ath_hw *ah)
351 ah->config.dma_beacon_response_time = 2;
352 ah->config.sw_beacon_response_time = 10;
353 ah->config.additional_swba_backoff = 0;
354 ah->config.ack_6mb = 0x0;
355 ah->config.cwm_ignore_extcca = 0;
356 ah->config.pcie_powersave_enable = 0;
357 ah->config.pcie_clock_req = 0;
358 ah->config.pcie_waen = 0;
359 ah->config.analog_shiftreg = 1;
360 ah->config.enable_ani = true;
362 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
363 ah->config.spurchans[i][0] = AR_NO_SPUR;
364 ah->config.spurchans[i][1] = AR_NO_SPUR;
367 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
368 ah->config.ht_enable = 1;
370 ah->config.ht_enable = 0;
372 ah->config.rx_intr_mitigation = true;
373 ah->config.pcieSerDesWrite = true;
376 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
377 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
378 * This means we use it for all AR5416 devices, and the few
379 * minor PCI AR9280 devices out there.
381 * Serialization is required because these devices do not handle
382 * well the case of two concurrent reads/writes due to the latency
383 * involved. During one read/write another read/write can be issued
384 * on another CPU while the previous read/write may still be working
385 * on our hardware, if we hit this case the hardware poops in a loop.
386 * We prevent this by serializing reads and writes.
388 * This issue is not present on PCI-Express devices or pre-AR5416
389 * devices (legacy, 802.11abg).
391 if (num_possible_cpus() > 1)
392 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
395 static void ath9k_hw_init_defaults(struct ath_hw *ah)
397 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
399 regulatory->country_code = CTRY_DEFAULT;
400 regulatory->power_limit = MAX_RATE_POWER;
401 regulatory->tp_scale = ATH9K_TP_SCALE_MAX;
403 ah->hw_version.magic = AR5416_MAGIC;
404 ah->hw_version.subvendorid = 0;
407 ah->sta_id1_defaults =
408 AR_STA_ID1_CRPT_MIC_ENABLE |
409 AR_STA_ID1_MCAST_KSRCH;
410 ah->enable_32kHz_clock = DONT_USE_32KHZ;
412 ah->globaltxtimeout = (u32) -1;
413 ah->power_mode = ATH9K_PM_UNDEFINED;
416 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
418 struct ath_common *common = ath9k_hw_common(ah);
422 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
425 for (i = 0; i < 3; i++) {
426 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
428 common->macaddr[2 * i] = eeval >> 8;
429 common->macaddr[2 * i + 1] = eeval & 0xff;
431 if (sum == 0 || sum == 0xffff * 3)
432 return -EADDRNOTAVAIL;
437 static int ath9k_hw_post_init(struct ath_hw *ah)
439 struct ath_common *common = ath9k_hw_common(ah);
442 if (common->bus_ops->ath_bus_type != ATH_USB) {
443 if (!ath9k_hw_chip_test(ah))
447 if (!AR_SREV_9300_20_OR_LATER(ah)) {
448 ecode = ar9002_hw_rf_claim(ah);
453 ecode = ath9k_hw_eeprom_init(ah);
457 ath_dbg(ath9k_hw_common(ah), ATH_DBG_CONFIG,
458 "Eeprom VER: %d, REV: %d\n",
459 ah->eep_ops->get_eeprom_ver(ah),
460 ah->eep_ops->get_eeprom_rev(ah));
462 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
464 ath_err(ath9k_hw_common(ah),
465 "Failed allocating banks for external radio\n");
466 ath9k_hw_rf_free_ext_banks(ah);
470 if (!AR_SREV_9100(ah)) {
471 ath9k_hw_ani_setup(ah);
472 ath9k_hw_ani_init(ah);
478 static void ath9k_hw_attach_ops(struct ath_hw *ah)
480 if (AR_SREV_9300_20_OR_LATER(ah))
481 ar9003_hw_attach_ops(ah);
483 ar9002_hw_attach_ops(ah);
486 /* Called for all hardware families */
487 static int __ath9k_hw_init(struct ath_hw *ah)
489 struct ath_common *common = ath9k_hw_common(ah);
492 if (ah->hw_version.devid == AR5416_AR9100_DEVID)
493 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
495 ath9k_hw_read_revisions(ah);
498 * Read back AR_WA into a permanent copy and set bits 14 and 17.
499 * We need to do this to avoid RMW of this register. We cannot
500 * read the reg when chip is asleep.
502 ah->WARegVal = REG_READ(ah, AR_WA);
503 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
504 AR_WA_ASPM_TIMER_BASED_DISABLE);
506 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
507 ath_err(common, "Couldn't reset chip\n");
511 ath9k_hw_init_defaults(ah);
512 ath9k_hw_init_config(ah);
514 ath9k_hw_attach_ops(ah);
516 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
517 ath_err(common, "Couldn't wakeup chip\n");
521 if (ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
522 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
523 ((AR_SREV_9160(ah) || AR_SREV_9280(ah)) &&
524 !ah->is_pciexpress)) {
525 ah->config.serialize_regmode =
528 ah->config.serialize_regmode =
533 ath_dbg(common, ATH_DBG_RESET, "serialize_regmode is %d\n",
534 ah->config.serialize_regmode);
536 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
537 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
539 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
541 switch (ah->hw_version.macVersion) {
542 case AR_SREV_VERSION_5416_PCI:
543 case AR_SREV_VERSION_5416_PCIE:
544 case AR_SREV_VERSION_9160:
545 case AR_SREV_VERSION_9100:
546 case AR_SREV_VERSION_9280:
547 case AR_SREV_VERSION_9285:
548 case AR_SREV_VERSION_9287:
549 case AR_SREV_VERSION_9271:
550 case AR_SREV_VERSION_9300:
551 case AR_SREV_VERSION_9485:
555 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
556 ah->hw_version.macVersion, ah->hw_version.macRev);
560 if (AR_SREV_9271(ah) || AR_SREV_9100(ah))
561 ah->is_pciexpress = false;
563 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
564 ath9k_hw_init_cal_settings(ah);
566 ah->ani_function = ATH9K_ANI_ALL;
567 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
568 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
569 if (!AR_SREV_9300_20_OR_LATER(ah))
570 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
572 ath9k_hw_init_mode_regs(ah);
575 if (ah->is_pciexpress)
576 ath9k_hw_configpcipowersave(ah, 0, 0);
578 ath9k_hw_disablepcie(ah);
580 if (!AR_SREV_9300_20_OR_LATER(ah))
581 ar9002_hw_cck_chan14_spread(ah);
583 r = ath9k_hw_post_init(ah);
587 ath9k_hw_init_mode_gain_regs(ah);
588 r = ath9k_hw_fill_cap_info(ah);
592 r = ath9k_hw_init_macaddr(ah);
594 ath_err(common, "Failed to initialize MAC address\n");
598 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
599 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
601 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
603 ah->bb_watchdog_timeout_ms = 25;
605 common->state = ATH_HW_INITIALIZED;
610 int ath9k_hw_init(struct ath_hw *ah)
613 struct ath_common *common = ath9k_hw_common(ah);
615 /* These are all the AR5008/AR9001/AR9002 hardware family of chipsets */
616 switch (ah->hw_version.devid) {
617 case AR5416_DEVID_PCI:
618 case AR5416_DEVID_PCIE:
619 case AR5416_AR9100_DEVID:
620 case AR9160_DEVID_PCI:
621 case AR9280_DEVID_PCI:
622 case AR9280_DEVID_PCIE:
623 case AR9285_DEVID_PCIE:
624 case AR9287_DEVID_PCI:
625 case AR9287_DEVID_PCIE:
626 case AR2427_DEVID_PCIE:
627 case AR9300_DEVID_PCIE:
628 case AR9300_DEVID_AR9485_PCIE:
631 if (common->bus_ops->ath_bus_type == ATH_USB)
633 ath_err(common, "Hardware device ID 0x%04x not supported\n",
634 ah->hw_version.devid);
638 ret = __ath9k_hw_init(ah);
641 "Unable to initialize hardware; initialization status: %d\n",
648 EXPORT_SYMBOL(ath9k_hw_init);
650 static void ath9k_hw_init_qos(struct ath_hw *ah)
652 ENABLE_REGWRITE_BUFFER(ah);
654 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
655 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
657 REG_WRITE(ah, AR_QOS_NO_ACK,
658 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
659 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
660 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
662 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
663 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
664 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
665 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
666 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
668 REGWRITE_BUFFER_FLUSH(ah);
671 static void ath9k_hw_init_pll(struct ath_hw *ah,
672 struct ath9k_channel *chan)
676 if (AR_SREV_9485(ah))
677 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, 0x886666);
679 pll = ath9k_hw_compute_pll_control(ah, chan);
681 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
683 /* Switch the core clock for ar9271 to 117Mhz */
684 if (AR_SREV_9271(ah)) {
686 REG_WRITE(ah, 0x50040, 0x304);
689 udelay(RTC_PLL_SETTLE_DELAY);
691 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
694 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
695 enum nl80211_iftype opmode)
697 u32 imr_reg = AR_IMR_TXERR |
703 if (AR_SREV_9300_20_OR_LATER(ah)) {
704 imr_reg |= AR_IMR_RXOK_HP;
705 if (ah->config.rx_intr_mitigation)
706 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
708 imr_reg |= AR_IMR_RXOK_LP;
711 if (ah->config.rx_intr_mitigation)
712 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
714 imr_reg |= AR_IMR_RXOK;
717 if (ah->config.tx_intr_mitigation)
718 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
720 imr_reg |= AR_IMR_TXOK;
722 if (opmode == NL80211_IFTYPE_AP)
723 imr_reg |= AR_IMR_MIB;
725 ENABLE_REGWRITE_BUFFER(ah);
727 REG_WRITE(ah, AR_IMR, imr_reg);
728 ah->imrs2_reg |= AR_IMR_S2_GTT;
729 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
731 if (!AR_SREV_9100(ah)) {
732 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
733 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, AR_INTR_SYNC_DEFAULT);
734 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
737 REGWRITE_BUFFER_FLUSH(ah);
739 if (AR_SREV_9300_20_OR_LATER(ah)) {
740 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
741 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
742 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
743 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
747 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
749 u32 val = ath9k_hw_mac_to_clks(ah, us);
750 val = min(val, (u32) 0xFFFF);
751 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
754 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
756 u32 val = ath9k_hw_mac_to_clks(ah, us);
757 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
758 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
761 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
763 u32 val = ath9k_hw_mac_to_clks(ah, us);
764 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
765 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
768 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
771 ath_dbg(ath9k_hw_common(ah), ATH_DBG_XMIT,
772 "bad global tx timeout %u\n", tu);
773 ah->globaltxtimeout = (u32) -1;
776 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
777 ah->globaltxtimeout = tu;
782 void ath9k_hw_init_global_settings(struct ath_hw *ah)
784 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
789 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
792 if (ah->misc_mode != 0)
793 REG_WRITE(ah, AR_PCU_MISC,
794 REG_READ(ah, AR_PCU_MISC) | ah->misc_mode);
796 if (conf->channel && conf->channel->band == IEEE80211_BAND_5GHZ)
801 /* As defined by IEEE 802.11-2007 17.3.8.6 */
802 slottime = ah->slottime + 3 * ah->coverage_class;
803 acktimeout = slottime + sifstime;
806 * Workaround for early ACK timeouts, add an offset to match the
807 * initval's 64us ack timeout value.
808 * This was initially only meant to work around an issue with delayed
809 * BA frames in some implementations, but it has been found to fix ACK
810 * timeout issues in other cases as well.
812 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
813 acktimeout += 64 - sifstime - ah->slottime;
815 ath9k_hw_setslottime(ah, ah->slottime);
816 ath9k_hw_set_ack_timeout(ah, acktimeout);
817 ath9k_hw_set_cts_timeout(ah, acktimeout);
818 if (ah->globaltxtimeout != (u32) -1)
819 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
821 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
823 void ath9k_hw_deinit(struct ath_hw *ah)
825 struct ath_common *common = ath9k_hw_common(ah);
827 if (common->state < ATH_HW_INITIALIZED)
830 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
833 ath9k_hw_rf_free_ext_banks(ah);
835 EXPORT_SYMBOL(ath9k_hw_deinit);
841 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
843 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
847 else if (IS_CHAN_G(chan))
855 /****************************************/
856 /* Reset and Channel Switching Routines */
857 /****************************************/
859 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
861 struct ath_common *common = ath9k_hw_common(ah);
864 ENABLE_REGWRITE_BUFFER(ah);
867 * set AHB_MODE not to do cacheline prefetches
869 if (!AR_SREV_9300_20_OR_LATER(ah)) {
870 regval = REG_READ(ah, AR_AHB_MODE);
871 REG_WRITE(ah, AR_AHB_MODE, regval | AR_AHB_PREFETCH_RD_EN);
875 * let mac dma reads be in 128 byte chunks
877 regval = REG_READ(ah, AR_TXCFG) & ~AR_TXCFG_DMASZ_MASK;
878 REG_WRITE(ah, AR_TXCFG, regval | AR_TXCFG_DMASZ_128B);
880 REGWRITE_BUFFER_FLUSH(ah);
883 * Restore TX Trigger Level to its pre-reset value.
884 * The initial value depends on whether aggregation is enabled, and is
885 * adjusted whenever underruns are detected.
887 if (!AR_SREV_9300_20_OR_LATER(ah))
888 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
890 ENABLE_REGWRITE_BUFFER(ah);
893 * let mac dma writes be in 128 byte chunks
895 regval = REG_READ(ah, AR_RXCFG) & ~AR_RXCFG_DMASZ_MASK;
896 REG_WRITE(ah, AR_RXCFG, regval | AR_RXCFG_DMASZ_128B);
899 * Setup receive FIFO threshold to hold off TX activities
901 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
903 if (AR_SREV_9300_20_OR_LATER(ah)) {
904 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
905 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
907 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
908 ah->caps.rx_status_len);
912 * reduce the number of usable entries in PCU TXBUF to avoid
913 * wrap around issues.
915 if (AR_SREV_9285(ah)) {
916 /* For AR9285 the number of Fifos are reduced to half.
917 * So set the usable tx buf size also to half to
918 * avoid data/delimiter underruns
920 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
921 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
922 } else if (!AR_SREV_9271(ah)) {
923 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
924 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
927 REGWRITE_BUFFER_FLUSH(ah);
929 if (AR_SREV_9300_20_OR_LATER(ah))
930 ath9k_hw_reset_txstatus_ring(ah);
933 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
937 val = REG_READ(ah, AR_STA_ID1);
938 val &= ~(AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC);
940 case NL80211_IFTYPE_AP:
941 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_STA_AP
942 | AR_STA_ID1_KSRCH_MODE);
943 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
945 case NL80211_IFTYPE_ADHOC:
946 case NL80211_IFTYPE_MESH_POINT:
947 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_ADHOC
948 | AR_STA_ID1_KSRCH_MODE);
949 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
951 case NL80211_IFTYPE_STATION:
952 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_KSRCH_MODE);
955 if (ah->is_monitoring)
956 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_KSRCH_MODE);
961 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
962 u32 *coef_mantissa, u32 *coef_exponent)
964 u32 coef_exp, coef_man;
966 for (coef_exp = 31; coef_exp > 0; coef_exp--)
967 if ((coef_scaled >> coef_exp) & 0x1)
970 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
972 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
974 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
975 *coef_exponent = coef_exp - 16;
978 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
983 if (AR_SREV_9100(ah)) {
984 u32 val = REG_READ(ah, AR_RTC_DERIVED_CLK);
985 val &= ~AR_RTC_DERIVED_CLK_PERIOD;
986 val |= SM(1, AR_RTC_DERIVED_CLK_PERIOD);
987 REG_WRITE(ah, AR_RTC_DERIVED_CLK, val);
988 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
991 ENABLE_REGWRITE_BUFFER(ah);
993 if (AR_SREV_9300_20_OR_LATER(ah)) {
994 REG_WRITE(ah, AR_WA, ah->WARegVal);
998 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
999 AR_RTC_FORCE_WAKE_ON_INT);
1001 if (AR_SREV_9100(ah)) {
1002 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1003 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1005 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1007 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1008 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1010 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1013 if (!AR_SREV_9300_20_OR_LATER(ah))
1015 REG_WRITE(ah, AR_RC, val);
1017 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1018 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1020 rst_flags = AR_RTC_RC_MAC_WARM;
1021 if (type == ATH9K_RESET_COLD)
1022 rst_flags |= AR_RTC_RC_MAC_COLD;
1025 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1027 REGWRITE_BUFFER_FLUSH(ah);
1031 REG_WRITE(ah, AR_RTC_RC, 0);
1032 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1033 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
1034 "RTC stuck in MAC reset\n");
1038 if (!AR_SREV_9100(ah))
1039 REG_WRITE(ah, AR_RC, 0);
1041 if (AR_SREV_9100(ah))
1047 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1049 ENABLE_REGWRITE_BUFFER(ah);
1051 if (AR_SREV_9300_20_OR_LATER(ah)) {
1052 REG_WRITE(ah, AR_WA, ah->WARegVal);
1056 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1057 AR_RTC_FORCE_WAKE_ON_INT);
1059 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1060 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1062 REG_WRITE(ah, AR_RTC_RESET, 0);
1065 REGWRITE_BUFFER_FLUSH(ah);
1067 if (!AR_SREV_9300_20_OR_LATER(ah))
1070 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1071 REG_WRITE(ah, AR_RC, 0);
1073 REG_WRITE(ah, AR_RTC_RESET, 1);
1075 if (!ath9k_hw_wait(ah,
1080 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
1081 "RTC not waking up\n");
1085 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1088 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1090 if (AR_SREV_9300_20_OR_LATER(ah)) {
1091 REG_WRITE(ah, AR_WA, ah->WARegVal);
1095 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1096 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1099 case ATH9K_RESET_POWER_ON:
1100 return ath9k_hw_set_reset_power_on(ah);
1101 case ATH9K_RESET_WARM:
1102 case ATH9K_RESET_COLD:
1103 return ath9k_hw_set_reset(ah, type);
1109 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1110 struct ath9k_channel *chan)
1112 if (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)) {
1113 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON))
1115 } else if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
1118 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1121 ah->chip_fullsleep = false;
1122 ath9k_hw_init_pll(ah, chan);
1123 ath9k_hw_set_rfmode(ah, chan);
1128 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1129 struct ath9k_channel *chan)
1131 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
1132 struct ath_common *common = ath9k_hw_common(ah);
1133 struct ieee80211_channel *channel = chan->chan;
1137 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1138 if (ath9k_hw_numtxpending(ah, qnum)) {
1139 ath_dbg(common, ATH_DBG_QUEUE,
1140 "Transmit frames pending on queue %d\n", qnum);
1145 if (!ath9k_hw_rfbus_req(ah)) {
1146 ath_err(common, "Could not kill baseband RX\n");
1150 ath9k_hw_set_channel_regs(ah, chan);
1152 r = ath9k_hw_rf_set_freq(ah, chan);
1154 ath_err(common, "Failed to set channel\n");
1157 ath9k_hw_set_clockrate(ah);
1159 ah->eep_ops->set_txpower(ah, chan,
1160 ath9k_regd_get_ctl(regulatory, chan),
1161 channel->max_antenna_gain * 2,
1162 channel->max_power * 2,
1163 min((u32) MAX_RATE_POWER,
1164 (u32) regulatory->power_limit), false);
1166 ath9k_hw_rfbus_done(ah);
1168 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1169 ath9k_hw_set_delta_slope(ah, chan);
1171 ath9k_hw_spur_mitigate_freq(ah, chan);
1176 bool ath9k_hw_check_alive(struct ath_hw *ah)
1181 if (AR_SREV_9285_12_OR_LATER(ah))
1185 reg = REG_READ(ah, AR_OBS_BUS_1);
1187 if ((reg & 0x7E7FFFEF) == 0x00702400)
1190 switch (reg & 0x7E000B00) {
1198 } while (count-- > 0);
1202 EXPORT_SYMBOL(ath9k_hw_check_alive);
1204 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1205 struct ath9k_hw_cal_data *caldata, bool bChannelChange)
1207 struct ath_common *common = ath9k_hw_common(ah);
1209 struct ath9k_channel *curchan = ah->curchan;
1215 ah->txchainmask = common->tx_chainmask;
1216 ah->rxchainmask = common->rx_chainmask;
1218 if ((common->bus_ops->ath_bus_type != ATH_USB) && !ah->chip_fullsleep) {
1219 ath9k_hw_abortpcurecv(ah);
1220 if (!ath9k_hw_stopdmarecv(ah)) {
1221 ath_dbg(common, ATH_DBG_XMIT,
1222 "Failed to stop receive dma\n");
1223 bChannelChange = false;
1227 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1230 if (curchan && !ah->chip_fullsleep)
1231 ath9k_hw_getnf(ah, curchan);
1233 ah->caldata = caldata;
1235 (chan->channel != caldata->channel ||
1236 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1237 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1238 /* Operating channel changed, reset channel calibration data */
1239 memset(caldata, 0, sizeof(*caldata));
1240 ath9k_init_nfcal_hist_buffer(ah, chan);
1243 if (bChannelChange &&
1244 (ah->chip_fullsleep != true) &&
1245 (ah->curchan != NULL) &&
1246 (chan->channel != ah->curchan->channel) &&
1247 ((chan->channelFlags & CHANNEL_ALL) ==
1248 (ah->curchan->channelFlags & CHANNEL_ALL)) &&
1249 (!AR_SREV_9280(ah) || AR_DEVID_7010(ah))) {
1251 if (ath9k_hw_channel_change(ah, chan)) {
1252 ath9k_hw_loadnf(ah, ah->curchan);
1253 ath9k_hw_start_nfcal(ah, true);
1254 if (AR_SREV_9271(ah))
1255 ar9002_hw_load_ani_reg(ah, chan);
1260 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1261 if (saveDefAntenna == 0)
1264 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1266 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1267 if (AR_SREV_9100(ah) ||
1268 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1269 tsf = ath9k_hw_gettsf64(ah);
1271 saveLedState = REG_READ(ah, AR_CFG_LED) &
1272 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1273 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1275 ath9k_hw_mark_phy_inactive(ah);
1277 ah->paprd_table_write_done = false;
1279 /* Only required on the first reset */
1280 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1282 AR9271_RESET_POWER_DOWN_CONTROL,
1283 AR9271_RADIO_RF_RST);
1287 if (!ath9k_hw_chip_reset(ah, chan)) {
1288 ath_err(common, "Chip reset failed\n");
1292 /* Only required on the first reset */
1293 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1294 ah->htc_reset_init = false;
1296 AR9271_RESET_POWER_DOWN_CONTROL,
1297 AR9271_GATE_MAC_CTL);
1303 ath9k_hw_settsf64(ah, tsf);
1305 if (AR_SREV_9280_20_OR_LATER(ah))
1306 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1308 if (!AR_SREV_9300_20_OR_LATER(ah))
1309 ar9002_hw_enable_async_fifo(ah);
1311 r = ath9k_hw_process_ini(ah, chan);
1316 * Some AR91xx SoC devices frequently fail to accept TSF writes
1317 * right after the chip reset. When that happens, write a new
1318 * value after the initvals have been applied, with an offset
1319 * based on measured time difference
1321 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1323 ath9k_hw_settsf64(ah, tsf);
1326 /* Setup MFP options for CCMP */
1327 if (AR_SREV_9280_20_OR_LATER(ah)) {
1328 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1329 * frames when constructing CCMP AAD. */
1330 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1332 ah->sw_mgmt_crypto = false;
1333 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1334 /* Disable hardware crypto for management frames */
1335 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1336 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1337 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1338 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1339 ah->sw_mgmt_crypto = true;
1341 ah->sw_mgmt_crypto = true;
1343 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1344 ath9k_hw_set_delta_slope(ah, chan);
1346 ath9k_hw_spur_mitigate_freq(ah, chan);
1347 ah->eep_ops->set_board_values(ah, chan);
1349 ath9k_hw_set_operating_mode(ah, ah->opmode);
1351 ENABLE_REGWRITE_BUFFER(ah);
1353 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1354 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1356 | AR_STA_ID1_RTS_USE_DEF
1358 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1359 | ah->sta_id1_defaults);
1360 ath_hw_setbssidmask(common);
1361 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1362 ath9k_hw_write_associd(ah);
1363 REG_WRITE(ah, AR_ISR, ~0);
1364 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1366 REGWRITE_BUFFER_FLUSH(ah);
1368 r = ath9k_hw_rf_set_freq(ah, chan);
1372 ath9k_hw_set_clockrate(ah);
1374 ENABLE_REGWRITE_BUFFER(ah);
1376 for (i = 0; i < AR_NUM_DCU; i++)
1377 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1379 REGWRITE_BUFFER_FLUSH(ah);
1382 for (i = 0; i < ah->caps.total_queues; i++)
1383 ath9k_hw_resettxqueue(ah, i);
1385 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1386 ath9k_hw_ani_cache_ini_regs(ah);
1387 ath9k_hw_init_qos(ah);
1389 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1390 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1392 ath9k_hw_init_global_settings(ah);
1394 if (!AR_SREV_9300_20_OR_LATER(ah)) {
1395 ar9002_hw_update_async_fifo(ah);
1396 ar9002_hw_enable_wep_aggregation(ah);
1399 REG_WRITE(ah, AR_STA_ID1,
1400 REG_READ(ah, AR_STA_ID1) | AR_STA_ID1_PRESERVE_SEQNUM);
1402 ath9k_hw_set_dma(ah);
1404 REG_WRITE(ah, AR_OBS, 8);
1406 if (ah->config.rx_intr_mitigation) {
1407 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1408 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1411 if (ah->config.tx_intr_mitigation) {
1412 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1413 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1416 ath9k_hw_init_bb(ah, chan);
1418 if (!ath9k_hw_init_cal(ah, chan))
1421 ENABLE_REGWRITE_BUFFER(ah);
1423 ath9k_hw_restore_chainmask(ah);
1424 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1426 REGWRITE_BUFFER_FLUSH(ah);
1429 * For big endian systems turn on swapping for descriptors
1431 if (AR_SREV_9100(ah)) {
1433 mask = REG_READ(ah, AR_CFG);
1434 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1435 ath_dbg(common, ATH_DBG_RESET,
1436 "CFG Byte Swap Set 0x%x\n", mask);
1439 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1440 REG_WRITE(ah, AR_CFG, mask);
1441 ath_dbg(common, ATH_DBG_RESET,
1442 "Setting CFG 0x%x\n", REG_READ(ah, AR_CFG));
1445 if (common->bus_ops->ath_bus_type == ATH_USB) {
1446 /* Configure AR9271 target WLAN */
1447 if (AR_SREV_9271(ah))
1448 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1450 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1454 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1458 if (ah->btcoex_hw.enabled)
1459 ath9k_hw_btcoex_enable(ah);
1461 if (AR_SREV_9300_20_OR_LATER(ah))
1462 ar9003_hw_bb_watchdog_config(ah);
1466 EXPORT_SYMBOL(ath9k_hw_reset);
1468 /******************************/
1469 /* Power Management (Chipset) */
1470 /******************************/
1473 * Notify Power Mgt is disabled in self-generated frames.
1474 * If requested, force chip to sleep.
1476 static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
1478 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1481 * Clear the RTC force wake bit to allow the
1482 * mac to go to sleep.
1484 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1485 AR_RTC_FORCE_WAKE_EN);
1486 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1487 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
1489 /* Shutdown chip. Active low */
1490 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah))
1491 REG_CLR_BIT(ah, (AR_RTC_RESET),
1495 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
1496 if (AR_SREV_9300_20_OR_LATER(ah))
1497 REG_WRITE(ah, AR_WA,
1498 ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1502 * Notify Power Management is enabled in self-generating
1503 * frames. If request, set power mode of chip to
1504 * auto/normal. Duration in units of 128us (1/8 TU).
1506 static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip)
1508 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1510 struct ath9k_hw_capabilities *pCap = &ah->caps;
1512 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1513 /* Set WakeOnInterrupt bit; clear ForceWake bit */
1514 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1515 AR_RTC_FORCE_WAKE_ON_INT);
1518 * Clear the RTC force wake bit to allow the
1519 * mac to go to sleep.
1521 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1522 AR_RTC_FORCE_WAKE_EN);
1526 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
1527 if (AR_SREV_9300_20_OR_LATER(ah))
1528 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1531 static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
1536 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
1537 if (AR_SREV_9300_20_OR_LATER(ah)) {
1538 REG_WRITE(ah, AR_WA, ah->WARegVal);
1543 if ((REG_READ(ah, AR_RTC_STATUS) &
1544 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
1545 if (ath9k_hw_set_reset_reg(ah,
1546 ATH9K_RESET_POWER_ON) != true) {
1549 if (!AR_SREV_9300_20_OR_LATER(ah))
1550 ath9k_hw_init_pll(ah, NULL);
1552 if (AR_SREV_9100(ah))
1553 REG_SET_BIT(ah, AR_RTC_RESET,
1556 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1557 AR_RTC_FORCE_WAKE_EN);
1560 for (i = POWER_UP_TIME / 50; i > 0; i--) {
1561 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
1562 if (val == AR_RTC_STATUS_ON)
1565 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1566 AR_RTC_FORCE_WAKE_EN);
1569 ath_err(ath9k_hw_common(ah),
1570 "Failed to wakeup in %uus\n",
1571 POWER_UP_TIME / 20);
1576 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1581 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
1583 struct ath_common *common = ath9k_hw_common(ah);
1584 int status = true, setChip = true;
1585 static const char *modes[] = {
1592 if (ah->power_mode == mode)
1595 ath_dbg(common, ATH_DBG_RESET, "%s -> %s\n",
1596 modes[ah->power_mode], modes[mode]);
1599 case ATH9K_PM_AWAKE:
1600 status = ath9k_hw_set_power_awake(ah, setChip);
1602 case ATH9K_PM_FULL_SLEEP:
1603 ath9k_set_power_sleep(ah, setChip);
1604 ah->chip_fullsleep = true;
1606 case ATH9K_PM_NETWORK_SLEEP:
1607 ath9k_set_power_network_sleep(ah, setChip);
1610 ath_err(common, "Unknown power mode %u\n", mode);
1613 ah->power_mode = mode;
1616 * XXX: If this warning never comes up after a while then
1617 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
1618 * ath9k_hw_setpower() return type void.
1621 if (!(ah->ah_flags & AH_UNPLUGGED))
1622 ATH_DBG_WARN_ON_ONCE(!status);
1626 EXPORT_SYMBOL(ath9k_hw_setpower);
1628 /*******************/
1629 /* Beacon Handling */
1630 /*******************/
1632 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
1636 ENABLE_REGWRITE_BUFFER(ah);
1638 switch (ah->opmode) {
1639 case NL80211_IFTYPE_ADHOC:
1640 case NL80211_IFTYPE_MESH_POINT:
1641 REG_SET_BIT(ah, AR_TXCFG,
1642 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
1643 REG_WRITE(ah, AR_NEXT_NDP_TIMER,
1644 TU_TO_USEC(next_beacon +
1645 (ah->atim_window ? ah->
1647 flags |= AR_NDP_TIMER_EN;
1648 case NL80211_IFTYPE_AP:
1649 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(next_beacon));
1650 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT,
1651 TU_TO_USEC(next_beacon -
1653 dma_beacon_response_time));
1654 REG_WRITE(ah, AR_NEXT_SWBA,
1655 TU_TO_USEC(next_beacon -
1657 sw_beacon_response_time));
1659 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
1662 ath_dbg(ath9k_hw_common(ah), ATH_DBG_BEACON,
1663 "%s: unsupported opmode: %d\n",
1664 __func__, ah->opmode);
1669 REG_WRITE(ah, AR_BEACON_PERIOD, TU_TO_USEC(beacon_period));
1670 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, TU_TO_USEC(beacon_period));
1671 REG_WRITE(ah, AR_SWBA_PERIOD, TU_TO_USEC(beacon_period));
1672 REG_WRITE(ah, AR_NDP_PERIOD, TU_TO_USEC(beacon_period));
1674 REGWRITE_BUFFER_FLUSH(ah);
1676 beacon_period &= ~ATH9K_BEACON_ENA;
1677 if (beacon_period & ATH9K_BEACON_RESET_TSF) {
1678 ath9k_hw_reset_tsf(ah);
1681 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
1683 EXPORT_SYMBOL(ath9k_hw_beaconinit);
1685 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
1686 const struct ath9k_beacon_state *bs)
1688 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
1689 struct ath9k_hw_capabilities *pCap = &ah->caps;
1690 struct ath_common *common = ath9k_hw_common(ah);
1692 ENABLE_REGWRITE_BUFFER(ah);
1694 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
1696 REG_WRITE(ah, AR_BEACON_PERIOD,
1697 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
1698 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
1699 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
1701 REGWRITE_BUFFER_FLUSH(ah);
1703 REG_RMW_FIELD(ah, AR_RSSI_THR,
1704 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
1706 beaconintval = bs->bs_intval & ATH9K_BEACON_PERIOD;
1708 if (bs->bs_sleepduration > beaconintval)
1709 beaconintval = bs->bs_sleepduration;
1711 dtimperiod = bs->bs_dtimperiod;
1712 if (bs->bs_sleepduration > dtimperiod)
1713 dtimperiod = bs->bs_sleepduration;
1715 if (beaconintval == dtimperiod)
1716 nextTbtt = bs->bs_nextdtim;
1718 nextTbtt = bs->bs_nexttbtt;
1720 ath_dbg(common, ATH_DBG_BEACON, "next DTIM %d\n", bs->bs_nextdtim);
1721 ath_dbg(common, ATH_DBG_BEACON, "next beacon %d\n", nextTbtt);
1722 ath_dbg(common, ATH_DBG_BEACON, "beacon period %d\n", beaconintval);
1723 ath_dbg(common, ATH_DBG_BEACON, "DTIM period %d\n", dtimperiod);
1725 ENABLE_REGWRITE_BUFFER(ah);
1727 REG_WRITE(ah, AR_NEXT_DTIM,
1728 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
1729 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
1731 REG_WRITE(ah, AR_SLEEP1,
1732 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
1733 | AR_SLEEP1_ASSUME_DTIM);
1735 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
1736 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
1738 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
1740 REG_WRITE(ah, AR_SLEEP2,
1741 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
1743 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
1744 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
1746 REGWRITE_BUFFER_FLUSH(ah);
1748 REG_SET_BIT(ah, AR_TIMER_MODE,
1749 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
1752 /* TSF Out of Range Threshold */
1753 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
1755 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
1757 /*******************/
1758 /* HW Capabilities */
1759 /*******************/
1761 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
1763 struct ath9k_hw_capabilities *pCap = &ah->caps;
1764 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
1765 struct ath_common *common = ath9k_hw_common(ah);
1766 struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
1768 u16 capField = 0, eeval;
1769 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
1771 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
1772 regulatory->current_rd = eeval;
1774 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_1);
1775 if (AR_SREV_9285_12_OR_LATER(ah))
1776 eeval |= AR9285_RDEXT_DEFAULT;
1777 regulatory->current_rd_ext = eeval;
1779 capField = ah->eep_ops->get_eeprom(ah, EEP_OP_CAP);
1781 if (ah->opmode != NL80211_IFTYPE_AP &&
1782 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
1783 if (regulatory->current_rd == 0x64 ||
1784 regulatory->current_rd == 0x65)
1785 regulatory->current_rd += 5;
1786 else if (regulatory->current_rd == 0x41)
1787 regulatory->current_rd = 0x43;
1788 ath_dbg(common, ATH_DBG_REGULATORY,
1789 "regdomain mapped to 0x%x\n", regulatory->current_rd);
1792 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
1793 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
1795 "no band has been marked as supported in EEPROM\n");
1799 if (eeval & AR5416_OPFLAGS_11A)
1800 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
1802 if (eeval & AR5416_OPFLAGS_11G)
1803 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
1805 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
1807 * For AR9271 we will temporarilly uses the rx chainmax as read from
1810 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
1811 !(eeval & AR5416_OPFLAGS_11A) &&
1812 !(AR_SREV_9271(ah)))
1813 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
1814 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
1816 /* Use rx_chainmask from EEPROM. */
1817 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
1819 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
1821 /* enable key search for every frame in an aggregate */
1822 if (AR_SREV_9300_20_OR_LATER(ah))
1823 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
1825 pCap->low_2ghz_chan = 2312;
1826 pCap->high_2ghz_chan = 2732;
1828 pCap->low_5ghz_chan = 4920;
1829 pCap->high_5ghz_chan = 6100;
1831 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
1833 if (ah->config.ht_enable)
1834 pCap->hw_caps |= ATH9K_HW_CAP_HT;
1836 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
1838 if (capField & AR_EEPROM_EEPCAP_MAXQCU)
1839 pCap->total_queues =
1840 MS(capField, AR_EEPROM_EEPCAP_MAXQCU);
1842 pCap->total_queues = ATH9K_NUM_TX_QUEUES;
1844 if (capField & AR_EEPROM_EEPCAP_KC_ENTRIES)
1845 pCap->keycache_size =
1846 1 << MS(capField, AR_EEPROM_EEPCAP_KC_ENTRIES);
1848 pCap->keycache_size = AR_KEYTABLE_SIZE;
1850 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
1851 pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD >> 1;
1853 pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD;
1855 if (AR_SREV_9271(ah))
1856 pCap->num_gpio_pins = AR9271_NUM_GPIO;
1857 else if (AR_DEVID_7010(ah))
1858 pCap->num_gpio_pins = AR7010_NUM_GPIO;
1859 else if (AR_SREV_9285_12_OR_LATER(ah))
1860 pCap->num_gpio_pins = AR9285_NUM_GPIO;
1861 else if (AR_SREV_9280_20_OR_LATER(ah))
1862 pCap->num_gpio_pins = AR928X_NUM_GPIO;
1864 pCap->num_gpio_pins = AR_NUM_GPIO;
1866 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah)) {
1867 pCap->hw_caps |= ATH9K_HW_CAP_CST;
1868 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
1870 pCap->rts_aggr_limit = (8 * 1024);
1873 pCap->hw_caps |= ATH9K_HW_CAP_ENHANCEDPM;
1875 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1876 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
1877 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
1879 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
1880 ah->rfkill_polarity =
1881 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
1883 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
1886 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
1887 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
1889 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
1891 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
1892 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
1894 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
1896 if (regulatory->current_rd_ext & (1 << REG_EXT_JAPAN_MIDBAND)) {
1898 AR_EEPROM_EEREGCAP_EN_KK_NEW_11A |
1899 AR_EEPROM_EEREGCAP_EN_KK_U1_EVEN |
1900 AR_EEPROM_EEREGCAP_EN_KK_U2 |
1901 AR_EEPROM_EEREGCAP_EN_KK_MIDBAND;
1904 AR_EEPROM_EEREGCAP_EN_KK_NEW_11A |
1905 AR_EEPROM_EEREGCAP_EN_KK_U1_EVEN;
1908 /* Advertise midband for AR5416 with FCC midband set in eeprom */
1909 if (regulatory->current_rd_ext & (1 << REG_EXT_FCC_MIDBAND) &&
1911 pCap->reg_cap |= AR_EEPROM_EEREGCAP_EN_FCC_MIDBAND;
1913 if (AR_SREV_9280_20_OR_LATER(ah) && common->btcoex_enabled) {
1914 btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO;
1915 btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO;
1917 if (AR_SREV_9285(ah)) {
1918 btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
1919 btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO;
1921 btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
1924 btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
1927 if (AR_SREV_9300_20_OR_LATER(ah)) {
1928 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
1929 if (!AR_SREV_9485(ah))
1930 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
1932 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
1933 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
1934 pCap->rx_status_len = sizeof(struct ar9003_rxs);
1935 pCap->tx_desc_len = sizeof(struct ar9003_txc);
1936 pCap->txs_len = sizeof(struct ar9003_txs);
1937 if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
1938 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
1940 pCap->tx_desc_len = sizeof(struct ath_desc);
1941 if (AR_SREV_9280_20(ah) &&
1942 ((ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV) <=
1943 AR5416_EEP_MINOR_VER_16) ||
1944 ah->eep_ops->get_eeprom(ah, EEP_FSTCLK_5G)))
1945 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
1948 if (AR_SREV_9300_20_OR_LATER(ah))
1949 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
1951 if (AR_SREV_9300_20_OR_LATER(ah))
1952 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
1954 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
1955 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
1957 if (AR_SREV_9285(ah))
1958 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
1960 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
1961 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
1962 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
1964 if (AR_SREV_9300_20_OR_LATER(ah)) {
1965 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
1966 pCap->hw_caps |= ATH9K_HW_CAP_APM;
1971 if (AR_SREV_9485_10(ah)) {
1972 pCap->pcie_lcr_extsync_en = true;
1973 pCap->pcie_lcr_offset = 0x80;
1976 tx_chainmask = pCap->tx_chainmask;
1977 rx_chainmask = pCap->rx_chainmask;
1978 while (tx_chainmask || rx_chainmask) {
1979 if (tx_chainmask & BIT(0))
1980 pCap->max_txchains++;
1981 if (rx_chainmask & BIT(0))
1982 pCap->max_rxchains++;
1991 /****************************/
1992 /* GPIO / RFKILL / Antennae */
1993 /****************************/
1995 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
1999 u32 gpio_shift, tmp;
2002 addr = AR_GPIO_OUTPUT_MUX3;
2004 addr = AR_GPIO_OUTPUT_MUX2;
2006 addr = AR_GPIO_OUTPUT_MUX1;
2008 gpio_shift = (gpio % 6) * 5;
2010 if (AR_SREV_9280_20_OR_LATER(ah)
2011 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2012 REG_RMW(ah, addr, (type << gpio_shift),
2013 (0x1f << gpio_shift));
2015 tmp = REG_READ(ah, addr);
2016 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2017 tmp &= ~(0x1f << gpio_shift);
2018 tmp |= (type << gpio_shift);
2019 REG_WRITE(ah, addr, tmp);
2023 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2027 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2029 if (AR_DEVID_7010(ah)) {
2031 REG_RMW(ah, AR7010_GPIO_OE,
2032 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2033 (AR7010_GPIO_OE_MASK << gpio_shift));
2037 gpio_shift = gpio << 1;
2040 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2041 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2043 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2045 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2047 #define MS_REG_READ(x, y) \
2048 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2050 if (gpio >= ah->caps.num_gpio_pins)
2053 if (AR_DEVID_7010(ah)) {
2055 val = REG_READ(ah, AR7010_GPIO_IN);
2056 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2057 } else if (AR_SREV_9300_20_OR_LATER(ah))
2058 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2059 AR_GPIO_BIT(gpio)) != 0;
2060 else if (AR_SREV_9271(ah))
2061 return MS_REG_READ(AR9271, gpio) != 0;
2062 else if (AR_SREV_9287_11_OR_LATER(ah))
2063 return MS_REG_READ(AR9287, gpio) != 0;
2064 else if (AR_SREV_9285_12_OR_LATER(ah))
2065 return MS_REG_READ(AR9285, gpio) != 0;
2066 else if (AR_SREV_9280_20_OR_LATER(ah))
2067 return MS_REG_READ(AR928X, gpio) != 0;
2069 return MS_REG_READ(AR, gpio) != 0;
2071 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2073 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2078 if (AR_DEVID_7010(ah)) {
2080 REG_RMW(ah, AR7010_GPIO_OE,
2081 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2082 (AR7010_GPIO_OE_MASK << gpio_shift));
2086 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2087 gpio_shift = 2 * gpio;
2090 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2091 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2093 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2095 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2097 if (AR_DEVID_7010(ah)) {
2099 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2104 if (AR_SREV_9271(ah))
2107 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2110 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2112 u32 ath9k_hw_getdefantenna(struct ath_hw *ah)
2114 return REG_READ(ah, AR_DEF_ANTENNA) & 0x7;
2116 EXPORT_SYMBOL(ath9k_hw_getdefantenna);
2118 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2120 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2122 EXPORT_SYMBOL(ath9k_hw_setantenna);
2124 /*********************/
2125 /* General Operation */
2126 /*********************/
2128 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2130 u32 bits = REG_READ(ah, AR_RX_FILTER);
2131 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2133 if (phybits & AR_PHY_ERR_RADAR)
2134 bits |= ATH9K_RX_FILTER_PHYRADAR;
2135 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2136 bits |= ATH9K_RX_FILTER_PHYERR;
2140 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2142 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2146 ENABLE_REGWRITE_BUFFER(ah);
2148 REG_WRITE(ah, AR_RX_FILTER, bits);
2151 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2152 phybits |= AR_PHY_ERR_RADAR;
2153 if (bits & ATH9K_RX_FILTER_PHYERR)
2154 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2155 REG_WRITE(ah, AR_PHY_ERR, phybits);
2158 REG_WRITE(ah, AR_RXCFG,
2159 REG_READ(ah, AR_RXCFG) | AR_RXCFG_ZLFDMA);
2161 REG_WRITE(ah, AR_RXCFG,
2162 REG_READ(ah, AR_RXCFG) & ~AR_RXCFG_ZLFDMA);
2164 REGWRITE_BUFFER_FLUSH(ah);
2166 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2168 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2170 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2173 ath9k_hw_init_pll(ah, NULL);
2176 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2178 bool ath9k_hw_disable(struct ath_hw *ah)
2180 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2183 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2186 ath9k_hw_init_pll(ah, NULL);
2189 EXPORT_SYMBOL(ath9k_hw_disable);
2191 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2193 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2194 struct ath9k_channel *chan = ah->curchan;
2195 struct ieee80211_channel *channel = chan->chan;
2197 regulatory->power_limit = min(limit, (u32) MAX_RATE_POWER);
2199 ah->eep_ops->set_txpower(ah, chan,
2200 ath9k_regd_get_ctl(regulatory, chan),
2201 channel->max_antenna_gain * 2,
2202 channel->max_power * 2,
2203 min((u32) MAX_RATE_POWER,
2204 (u32) regulatory->power_limit), test);
2206 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2208 void ath9k_hw_setopmode(struct ath_hw *ah)
2210 ath9k_hw_set_operating_mode(ah, ah->opmode);
2212 EXPORT_SYMBOL(ath9k_hw_setopmode);
2214 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2216 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2217 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2219 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2221 void ath9k_hw_write_associd(struct ath_hw *ah)
2223 struct ath_common *common = ath9k_hw_common(ah);
2225 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2226 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2227 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2229 EXPORT_SYMBOL(ath9k_hw_write_associd);
2231 #define ATH9K_MAX_TSF_READ 10
2233 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2235 u32 tsf_lower, tsf_upper1, tsf_upper2;
2238 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2239 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2240 tsf_lower = REG_READ(ah, AR_TSF_L32);
2241 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2242 if (tsf_upper2 == tsf_upper1)
2244 tsf_upper1 = tsf_upper2;
2247 WARN_ON( i == ATH9K_MAX_TSF_READ );
2249 return (((u64)tsf_upper1 << 32) | tsf_lower);
2251 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2253 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2255 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2256 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2258 EXPORT_SYMBOL(ath9k_hw_settsf64);
2260 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2262 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2263 AH_TSF_WRITE_TIMEOUT))
2264 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
2265 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2267 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2269 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2271 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)
2274 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2276 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2278 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2280 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2282 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2285 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2286 macmode = AR_2040_JOINED_RX_CLEAR;
2290 REG_WRITE(ah, AR_2040_MODE, macmode);
2293 /* HW Generic timers configuration */
2295 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2297 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2298 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2299 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2300 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2301 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2302 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2303 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2304 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2305 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2306 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2307 AR_NDP2_TIMER_MODE, 0x0002},
2308 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2309 AR_NDP2_TIMER_MODE, 0x0004},
2310 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2311 AR_NDP2_TIMER_MODE, 0x0008},
2312 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2313 AR_NDP2_TIMER_MODE, 0x0010},
2314 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2315 AR_NDP2_TIMER_MODE, 0x0020},
2316 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2317 AR_NDP2_TIMER_MODE, 0x0040},
2318 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2319 AR_NDP2_TIMER_MODE, 0x0080}
2322 /* HW generic timer primitives */
2324 /* compute and clear index of rightmost 1 */
2325 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2335 return timer_table->gen_timer_index[b];
2338 static u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2340 return REG_READ(ah, AR_TSF_L32);
2343 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2344 void (*trigger)(void *),
2345 void (*overflow)(void *),
2349 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2350 struct ath_gen_timer *timer;
2352 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2354 if (timer == NULL) {
2355 ath_err(ath9k_hw_common(ah),
2356 "Failed to allocate memory for hw timer[%d]\n",
2361 /* allocate a hardware generic timer slot */
2362 timer_table->timers[timer_index] = timer;
2363 timer->index = timer_index;
2364 timer->trigger = trigger;
2365 timer->overflow = overflow;
2370 EXPORT_SYMBOL(ath_gen_timer_alloc);
2372 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2373 struct ath_gen_timer *timer,
2377 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2380 BUG_ON(!timer_period);
2382 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
2384 tsf = ath9k_hw_gettsf32(ah);
2386 ath_dbg(ath9k_hw_common(ah), ATH_DBG_HWTIMER,
2387 "current tsf %x period %x timer_next %x\n",
2388 tsf, timer_period, timer_next);
2391 * Pull timer_next forward if the current TSF already passed it
2392 * because of software latency
2394 if (timer_next < tsf)
2395 timer_next = tsf + timer_period;
2398 * Program generic timer registers
2400 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
2402 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
2404 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2405 gen_tmr_configuration[timer->index].mode_mask);
2407 /* Enable both trigger and thresh interrupt masks */
2408 REG_SET_BIT(ah, AR_IMR_S5,
2409 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2410 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2412 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
2414 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
2416 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2418 if ((timer->index < AR_FIRST_NDP_TIMER) ||
2419 (timer->index >= ATH_MAX_GEN_TIMER)) {
2423 /* Clear generic timer enable bits. */
2424 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2425 gen_tmr_configuration[timer->index].mode_mask);
2427 /* Disable both trigger and thresh interrupt masks */
2428 REG_CLR_BIT(ah, AR_IMR_S5,
2429 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2430 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2432 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
2434 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
2436 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
2438 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2440 /* free the hardware generic timer slot */
2441 timer_table->timers[timer->index] = NULL;
2444 EXPORT_SYMBOL(ath_gen_timer_free);
2447 * Generic Timer Interrupts handling
2449 void ath_gen_timer_isr(struct ath_hw *ah)
2451 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2452 struct ath_gen_timer *timer;
2453 struct ath_common *common = ath9k_hw_common(ah);
2454 u32 trigger_mask, thresh_mask, index;
2456 /* get hardware generic timer interrupt status */
2457 trigger_mask = ah->intr_gen_timer_trigger;
2458 thresh_mask = ah->intr_gen_timer_thresh;
2459 trigger_mask &= timer_table->timer_mask.val;
2460 thresh_mask &= timer_table->timer_mask.val;
2462 trigger_mask &= ~thresh_mask;
2464 while (thresh_mask) {
2465 index = rightmost_index(timer_table, &thresh_mask);
2466 timer = timer_table->timers[index];
2468 ath_dbg(common, ATH_DBG_HWTIMER,
2469 "TSF overflow for Gen timer %d\n", index);
2470 timer->overflow(timer->arg);
2473 while (trigger_mask) {
2474 index = rightmost_index(timer_table, &trigger_mask);
2475 timer = timer_table->timers[index];
2477 ath_dbg(common, ATH_DBG_HWTIMER,
2478 "Gen timer[%d] trigger\n", index);
2479 timer->trigger(timer->arg);
2482 EXPORT_SYMBOL(ath_gen_timer_isr);
2488 void ath9k_hw_htc_resetinit(struct ath_hw *ah)
2490 ah->htc_reset_init = true;
2492 EXPORT_SYMBOL(ath9k_hw_htc_resetinit);
2497 } ath_mac_bb_names[] = {
2498 /* Devices with external radios */
2499 { AR_SREV_VERSION_5416_PCI, "5416" },
2500 { AR_SREV_VERSION_5416_PCIE, "5418" },
2501 { AR_SREV_VERSION_9100, "9100" },
2502 { AR_SREV_VERSION_9160, "9160" },
2503 /* Single-chip solutions */
2504 { AR_SREV_VERSION_9280, "9280" },
2505 { AR_SREV_VERSION_9285, "9285" },
2506 { AR_SREV_VERSION_9287, "9287" },
2507 { AR_SREV_VERSION_9271, "9271" },
2508 { AR_SREV_VERSION_9300, "9300" },
2511 /* For devices with external radios */
2515 } ath_rf_names[] = {
2517 { AR_RAD5133_SREV_MAJOR, "5133" },
2518 { AR_RAD5122_SREV_MAJOR, "5122" },
2519 { AR_RAD2133_SREV_MAJOR, "2133" },
2520 { AR_RAD2122_SREV_MAJOR, "2122" }
2524 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
2526 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
2530 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
2531 if (ath_mac_bb_names[i].version == mac_bb_version) {
2532 return ath_mac_bb_names[i].name;
2540 * Return the RF name. "????" is returned if the RF is unknown.
2541 * Used for devices with external radios.
2543 static const char *ath9k_hw_rf_name(u16 rf_version)
2547 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
2548 if (ath_rf_names[i].version == rf_version) {
2549 return ath_rf_names[i].name;
2556 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
2560 /* chipsets >= AR9280 are single-chip */
2561 if (AR_SREV_9280_20_OR_LATER(ah)) {
2562 used = snprintf(hw_name, len,
2563 "Atheros AR%s Rev:%x",
2564 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
2565 ah->hw_version.macRev);
2568 used = snprintf(hw_name, len,
2569 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
2570 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
2571 ah->hw_version.macRev,
2572 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
2573 AR_RADIO_SREV_MAJOR)),
2574 ah->hw_version.phyRev);
2577 hw_name[used] = '\0';
2579 EXPORT_SYMBOL(ath9k_hw_name);