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 void ath9k_hw_write_array(struct ath_hw *ah, struct ar5416IniArray *array,
134 int column, unsigned int *writecnt)
138 ENABLE_REGWRITE_BUFFER(ah);
139 for (r = 0; r < array->ia_rows; r++) {
140 REG_WRITE(ah, INI_RA(array, r, 0),
141 INI_RA(array, r, column));
144 REGWRITE_BUFFER_FLUSH(ah);
147 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
152 for (i = 0, retval = 0; i < n; i++) {
153 retval = (retval << 1) | (val & 1);
159 bool ath9k_get_channel_edges(struct ath_hw *ah,
163 struct ath9k_hw_capabilities *pCap = &ah->caps;
165 if (flags & CHANNEL_5GHZ) {
166 *low = pCap->low_5ghz_chan;
167 *high = pCap->high_5ghz_chan;
170 if ((flags & CHANNEL_2GHZ)) {
171 *low = pCap->low_2ghz_chan;
172 *high = pCap->high_2ghz_chan;
178 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
180 u32 frameLen, u16 rateix,
183 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
189 case WLAN_RC_PHY_CCK:
190 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
193 numBits = frameLen << 3;
194 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
196 case WLAN_RC_PHY_OFDM:
197 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
198 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
199 numBits = OFDM_PLCP_BITS + (frameLen << 3);
200 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
201 txTime = OFDM_SIFS_TIME_QUARTER
202 + OFDM_PREAMBLE_TIME_QUARTER
203 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
204 } else if (ah->curchan &&
205 IS_CHAN_HALF_RATE(ah->curchan)) {
206 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
207 numBits = OFDM_PLCP_BITS + (frameLen << 3);
208 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
209 txTime = OFDM_SIFS_TIME_HALF +
210 OFDM_PREAMBLE_TIME_HALF
211 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
213 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
214 numBits = OFDM_PLCP_BITS + (frameLen << 3);
215 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
216 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
217 + (numSymbols * OFDM_SYMBOL_TIME);
221 ath_err(ath9k_hw_common(ah),
222 "Unknown phy %u (rate ix %u)\n", phy, rateix);
229 EXPORT_SYMBOL(ath9k_hw_computetxtime);
231 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
232 struct ath9k_channel *chan,
233 struct chan_centers *centers)
237 if (!IS_CHAN_HT40(chan)) {
238 centers->ctl_center = centers->ext_center =
239 centers->synth_center = chan->channel;
243 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
244 (chan->chanmode == CHANNEL_G_HT40PLUS)) {
245 centers->synth_center =
246 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
249 centers->synth_center =
250 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
254 centers->ctl_center =
255 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
256 /* 25 MHz spacing is supported by hw but not on upper layers */
257 centers->ext_center =
258 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
265 static void ath9k_hw_read_revisions(struct ath_hw *ah)
269 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
272 val = REG_READ(ah, AR_SREV);
273 ah->hw_version.macVersion =
274 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
275 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
276 ah->is_pciexpress = (val & AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
278 if (!AR_SREV_9100(ah))
279 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
281 ah->hw_version.macRev = val & AR_SREV_REVISION;
283 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
284 ah->is_pciexpress = true;
288 /************************************/
289 /* HW Attach, Detach, Init Routines */
290 /************************************/
292 static void ath9k_hw_disablepcie(struct ath_hw *ah)
294 if (!AR_SREV_5416(ah))
297 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
298 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
299 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
300 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
301 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
302 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
303 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
304 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
305 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
307 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
310 /* This should work for all families including legacy */
311 static bool ath9k_hw_chip_test(struct ath_hw *ah)
313 struct ath_common *common = ath9k_hw_common(ah);
314 u32 regAddr[2] = { AR_STA_ID0 };
316 static const u32 patternData[4] = {
317 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
321 if (!AR_SREV_9300_20_OR_LATER(ah)) {
323 regAddr[1] = AR_PHY_BASE + (8 << 2);
327 for (i = 0; i < loop_max; i++) {
328 u32 addr = regAddr[i];
331 regHold[i] = REG_READ(ah, addr);
332 for (j = 0; j < 0x100; j++) {
333 wrData = (j << 16) | j;
334 REG_WRITE(ah, addr, wrData);
335 rdData = REG_READ(ah, addr);
336 if (rdData != wrData) {
338 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
339 addr, wrData, rdData);
343 for (j = 0; j < 4; j++) {
344 wrData = patternData[j];
345 REG_WRITE(ah, addr, wrData);
346 rdData = REG_READ(ah, addr);
347 if (wrData != rdData) {
349 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
350 addr, wrData, rdData);
354 REG_WRITE(ah, regAddr[i], regHold[i]);
361 static void ath9k_hw_init_config(struct ath_hw *ah)
365 ah->config.dma_beacon_response_time = 2;
366 ah->config.sw_beacon_response_time = 10;
367 ah->config.additional_swba_backoff = 0;
368 ah->config.ack_6mb = 0x0;
369 ah->config.cwm_ignore_extcca = 0;
370 ah->config.pcie_powersave_enable = 0;
371 ah->config.pcie_clock_req = 0;
372 ah->config.pcie_waen = 0;
373 ah->config.analog_shiftreg = 1;
374 ah->config.enable_ani = true;
376 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
377 ah->config.spurchans[i][0] = AR_NO_SPUR;
378 ah->config.spurchans[i][1] = AR_NO_SPUR;
381 /* PAPRD needs some more work to be enabled */
382 ah->config.paprd_disable = 1;
384 ah->config.rx_intr_mitigation = true;
385 ah->config.pcieSerDesWrite = true;
388 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
389 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
390 * This means we use it for all AR5416 devices, and the few
391 * minor PCI AR9280 devices out there.
393 * Serialization is required because these devices do not handle
394 * well the case of two concurrent reads/writes due to the latency
395 * involved. During one read/write another read/write can be issued
396 * on another CPU while the previous read/write may still be working
397 * on our hardware, if we hit this case the hardware poops in a loop.
398 * We prevent this by serializing reads and writes.
400 * This issue is not present on PCI-Express devices or pre-AR5416
401 * devices (legacy, 802.11abg).
403 if (num_possible_cpus() > 1)
404 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
407 static void ath9k_hw_init_defaults(struct ath_hw *ah)
409 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
411 regulatory->country_code = CTRY_DEFAULT;
412 regulatory->power_limit = MAX_RATE_POWER;
413 regulatory->tp_scale = ATH9K_TP_SCALE_MAX;
415 ah->hw_version.magic = AR5416_MAGIC;
416 ah->hw_version.subvendorid = 0;
419 ah->sta_id1_defaults =
420 AR_STA_ID1_CRPT_MIC_ENABLE |
421 AR_STA_ID1_MCAST_KSRCH;
422 if (AR_SREV_9100(ah))
423 ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
424 ah->enable_32kHz_clock = DONT_USE_32KHZ;
426 ah->globaltxtimeout = (u32) -1;
427 ah->power_mode = ATH9K_PM_UNDEFINED;
430 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
432 struct ath_common *common = ath9k_hw_common(ah);
436 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
439 for (i = 0; i < 3; i++) {
440 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
442 common->macaddr[2 * i] = eeval >> 8;
443 common->macaddr[2 * i + 1] = eeval & 0xff;
445 if (sum == 0 || sum == 0xffff * 3)
446 return -EADDRNOTAVAIL;
451 static int ath9k_hw_post_init(struct ath_hw *ah)
453 struct ath_common *common = ath9k_hw_common(ah);
456 if (common->bus_ops->ath_bus_type != ATH_USB) {
457 if (!ath9k_hw_chip_test(ah))
461 if (!AR_SREV_9300_20_OR_LATER(ah)) {
462 ecode = ar9002_hw_rf_claim(ah);
467 ecode = ath9k_hw_eeprom_init(ah);
471 ath_dbg(ath9k_hw_common(ah), ATH_DBG_CONFIG,
472 "Eeprom VER: %d, REV: %d\n",
473 ah->eep_ops->get_eeprom_ver(ah),
474 ah->eep_ops->get_eeprom_rev(ah));
476 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
478 ath_err(ath9k_hw_common(ah),
479 "Failed allocating banks for external radio\n");
480 ath9k_hw_rf_free_ext_banks(ah);
484 if (!AR_SREV_9100(ah)) {
485 ath9k_hw_ani_setup(ah);
486 ath9k_hw_ani_init(ah);
492 static void ath9k_hw_attach_ops(struct ath_hw *ah)
494 if (AR_SREV_9300_20_OR_LATER(ah))
495 ar9003_hw_attach_ops(ah);
497 ar9002_hw_attach_ops(ah);
500 /* Called for all hardware families */
501 static int __ath9k_hw_init(struct ath_hw *ah)
503 struct ath_common *common = ath9k_hw_common(ah);
506 if (ah->hw_version.devid == AR5416_AR9100_DEVID)
507 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
509 ath9k_hw_read_revisions(ah);
512 * Read back AR_WA into a permanent copy and set bits 14 and 17.
513 * We need to do this to avoid RMW of this register. We cannot
514 * read the reg when chip is asleep.
516 ah->WARegVal = REG_READ(ah, AR_WA);
517 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
518 AR_WA_ASPM_TIMER_BASED_DISABLE);
520 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
521 ath_err(common, "Couldn't reset chip\n");
525 ath9k_hw_init_defaults(ah);
526 ath9k_hw_init_config(ah);
528 ath9k_hw_attach_ops(ah);
530 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
531 ath_err(common, "Couldn't wakeup chip\n");
535 if (ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
536 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
537 ((AR_SREV_9160(ah) || AR_SREV_9280(ah)) &&
538 !ah->is_pciexpress)) {
539 ah->config.serialize_regmode =
542 ah->config.serialize_regmode =
547 ath_dbg(common, ATH_DBG_RESET, "serialize_regmode is %d\n",
548 ah->config.serialize_regmode);
550 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
551 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
553 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
555 switch (ah->hw_version.macVersion) {
556 case AR_SREV_VERSION_5416_PCI:
557 case AR_SREV_VERSION_5416_PCIE:
558 case AR_SREV_VERSION_9160:
559 case AR_SREV_VERSION_9100:
560 case AR_SREV_VERSION_9280:
561 case AR_SREV_VERSION_9285:
562 case AR_SREV_VERSION_9287:
563 case AR_SREV_VERSION_9271:
564 case AR_SREV_VERSION_9300:
565 case AR_SREV_VERSION_9485:
569 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
570 ah->hw_version.macVersion, ah->hw_version.macRev);
574 if (AR_SREV_9271(ah) || AR_SREV_9100(ah))
575 ah->is_pciexpress = false;
577 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
578 ath9k_hw_init_cal_settings(ah);
580 ah->ani_function = ATH9K_ANI_ALL;
581 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
582 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
583 if (!AR_SREV_9300_20_OR_LATER(ah))
584 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
586 ath9k_hw_init_mode_regs(ah);
589 if (ah->is_pciexpress)
590 ath9k_hw_configpcipowersave(ah, 0, 0);
592 ath9k_hw_disablepcie(ah);
594 if (!AR_SREV_9300_20_OR_LATER(ah))
595 ar9002_hw_cck_chan14_spread(ah);
597 r = ath9k_hw_post_init(ah);
601 ath9k_hw_init_mode_gain_regs(ah);
602 r = ath9k_hw_fill_cap_info(ah);
606 r = ath9k_hw_init_macaddr(ah);
608 ath_err(common, "Failed to initialize MAC address\n");
612 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
613 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
615 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
617 ah->bb_watchdog_timeout_ms = 25;
619 common->state = ATH_HW_INITIALIZED;
624 int ath9k_hw_init(struct ath_hw *ah)
627 struct ath_common *common = ath9k_hw_common(ah);
629 /* These are all the AR5008/AR9001/AR9002 hardware family of chipsets */
630 switch (ah->hw_version.devid) {
631 case AR5416_DEVID_PCI:
632 case AR5416_DEVID_PCIE:
633 case AR5416_AR9100_DEVID:
634 case AR9160_DEVID_PCI:
635 case AR9280_DEVID_PCI:
636 case AR9280_DEVID_PCIE:
637 case AR9285_DEVID_PCIE:
638 case AR9287_DEVID_PCI:
639 case AR9287_DEVID_PCIE:
640 case AR2427_DEVID_PCIE:
641 case AR9300_DEVID_PCIE:
642 case AR9300_DEVID_AR9485_PCIE:
645 if (common->bus_ops->ath_bus_type == ATH_USB)
647 ath_err(common, "Hardware device ID 0x%04x not supported\n",
648 ah->hw_version.devid);
652 ret = __ath9k_hw_init(ah);
655 "Unable to initialize hardware; initialization status: %d\n",
662 EXPORT_SYMBOL(ath9k_hw_init);
664 static void ath9k_hw_init_qos(struct ath_hw *ah)
666 ENABLE_REGWRITE_BUFFER(ah);
668 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
669 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
671 REG_WRITE(ah, AR_QOS_NO_ACK,
672 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
673 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
674 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
676 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
677 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
678 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
679 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
680 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
682 REGWRITE_BUFFER_FLUSH(ah);
685 unsigned long ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
687 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
689 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
691 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0)
694 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
696 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
698 #define DPLL2_KD_VAL 0x3D
699 #define DPLL2_KI_VAL 0x06
700 #define DPLL3_PHASE_SHIFT_VAL 0x1
702 static void ath9k_hw_init_pll(struct ath_hw *ah,
703 struct ath9k_channel *chan)
707 if (AR_SREV_9485(ah)) {
708 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, 0x886666);
709 REG_WRITE(ah, AR_CH0_DDR_DPLL2, 0x19e82f01);
711 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
712 AR_CH0_DPLL3_PHASE_SHIFT, DPLL3_PHASE_SHIFT_VAL);
714 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
717 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, 0x886666);
719 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
720 AR_CH0_DPLL2_KD, DPLL2_KD_VAL);
721 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
722 AR_CH0_DPLL2_KI, DPLL2_KI_VAL);
724 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
725 AR_CH0_DPLL3_PHASE_SHIFT, DPLL3_PHASE_SHIFT_VAL);
726 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x142c);
730 pll = ath9k_hw_compute_pll_control(ah, chan);
732 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
734 /* Switch the core clock for ar9271 to 117Mhz */
735 if (AR_SREV_9271(ah)) {
737 REG_WRITE(ah, 0x50040, 0x304);
740 udelay(RTC_PLL_SETTLE_DELAY);
742 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
745 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
746 enum nl80211_iftype opmode)
748 u32 imr_reg = AR_IMR_TXERR |
754 if (AR_SREV_9300_20_OR_LATER(ah)) {
755 imr_reg |= AR_IMR_RXOK_HP;
756 if (ah->config.rx_intr_mitigation)
757 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
759 imr_reg |= AR_IMR_RXOK_LP;
762 if (ah->config.rx_intr_mitigation)
763 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
765 imr_reg |= AR_IMR_RXOK;
768 if (ah->config.tx_intr_mitigation)
769 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
771 imr_reg |= AR_IMR_TXOK;
773 if (opmode == NL80211_IFTYPE_AP)
774 imr_reg |= AR_IMR_MIB;
776 ENABLE_REGWRITE_BUFFER(ah);
778 REG_WRITE(ah, AR_IMR, imr_reg);
779 ah->imrs2_reg |= AR_IMR_S2_GTT;
780 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
782 if (!AR_SREV_9100(ah)) {
783 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
784 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, AR_INTR_SYNC_DEFAULT);
785 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
788 REGWRITE_BUFFER_FLUSH(ah);
790 if (AR_SREV_9300_20_OR_LATER(ah)) {
791 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
792 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
793 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
794 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
798 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
800 u32 val = ath9k_hw_mac_to_clks(ah, us);
801 val = min(val, (u32) 0xFFFF);
802 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
805 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
807 u32 val = ath9k_hw_mac_to_clks(ah, us);
808 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
809 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
812 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
814 u32 val = ath9k_hw_mac_to_clks(ah, us);
815 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
816 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
819 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
822 ath_dbg(ath9k_hw_common(ah), ATH_DBG_XMIT,
823 "bad global tx timeout %u\n", tu);
824 ah->globaltxtimeout = (u32) -1;
827 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
828 ah->globaltxtimeout = tu;
833 void ath9k_hw_init_global_settings(struct ath_hw *ah)
835 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
840 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
843 if (ah->misc_mode != 0)
844 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
846 if (conf->channel && conf->channel->band == IEEE80211_BAND_5GHZ)
851 /* As defined by IEEE 802.11-2007 17.3.8.6 */
852 slottime = ah->slottime + 3 * ah->coverage_class;
853 acktimeout = slottime + sifstime;
856 * Workaround for early ACK timeouts, add an offset to match the
857 * initval's 64us ack timeout value.
858 * This was initially only meant to work around an issue with delayed
859 * BA frames in some implementations, but it has been found to fix ACK
860 * timeout issues in other cases as well.
862 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
863 acktimeout += 64 - sifstime - ah->slottime;
865 ath9k_hw_setslottime(ah, ah->slottime);
866 ath9k_hw_set_ack_timeout(ah, acktimeout);
867 ath9k_hw_set_cts_timeout(ah, acktimeout);
868 if (ah->globaltxtimeout != (u32) -1)
869 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
871 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
873 void ath9k_hw_deinit(struct ath_hw *ah)
875 struct ath_common *common = ath9k_hw_common(ah);
877 if (common->state < ATH_HW_INITIALIZED)
880 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
883 ath9k_hw_rf_free_ext_banks(ah);
885 EXPORT_SYMBOL(ath9k_hw_deinit);
891 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
893 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
897 else if (IS_CHAN_G(chan))
905 /****************************************/
906 /* Reset and Channel Switching Routines */
907 /****************************************/
909 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
911 struct ath_common *common = ath9k_hw_common(ah);
913 ENABLE_REGWRITE_BUFFER(ah);
916 * set AHB_MODE not to do cacheline prefetches
918 if (!AR_SREV_9300_20_OR_LATER(ah))
919 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
922 * let mac dma reads be in 128 byte chunks
924 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
926 REGWRITE_BUFFER_FLUSH(ah);
929 * Restore TX Trigger Level to its pre-reset value.
930 * The initial value depends on whether aggregation is enabled, and is
931 * adjusted whenever underruns are detected.
933 if (!AR_SREV_9300_20_OR_LATER(ah))
934 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
936 ENABLE_REGWRITE_BUFFER(ah);
939 * let mac dma writes be in 128 byte chunks
941 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
944 * Setup receive FIFO threshold to hold off TX activities
946 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
948 if (AR_SREV_9300_20_OR_LATER(ah)) {
949 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
950 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
952 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
953 ah->caps.rx_status_len);
957 * reduce the number of usable entries in PCU TXBUF to avoid
958 * wrap around issues.
960 if (AR_SREV_9285(ah)) {
961 /* For AR9285 the number of Fifos are reduced to half.
962 * So set the usable tx buf size also to half to
963 * avoid data/delimiter underruns
965 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
966 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
967 } else if (!AR_SREV_9271(ah)) {
968 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
969 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
972 REGWRITE_BUFFER_FLUSH(ah);
974 if (AR_SREV_9300_20_OR_LATER(ah))
975 ath9k_hw_reset_txstatus_ring(ah);
978 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
980 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
981 u32 set = AR_STA_ID1_KSRCH_MODE;
984 case NL80211_IFTYPE_ADHOC:
985 case NL80211_IFTYPE_MESH_POINT:
986 set |= AR_STA_ID1_ADHOC;
987 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
989 case NL80211_IFTYPE_AP:
990 set |= AR_STA_ID1_STA_AP;
992 case NL80211_IFTYPE_STATION:
993 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
996 if (!ah->is_monitoring)
1000 REG_RMW(ah, AR_STA_ID1, set, mask);
1003 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1004 u32 *coef_mantissa, u32 *coef_exponent)
1006 u32 coef_exp, coef_man;
1008 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1009 if ((coef_scaled >> coef_exp) & 0x1)
1012 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1014 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1016 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1017 *coef_exponent = coef_exp - 16;
1020 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1025 if (AR_SREV_9100(ah)) {
1026 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1027 AR_RTC_DERIVED_CLK_PERIOD, 1);
1028 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1031 ENABLE_REGWRITE_BUFFER(ah);
1033 if (AR_SREV_9300_20_OR_LATER(ah)) {
1034 REG_WRITE(ah, AR_WA, ah->WARegVal);
1038 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1039 AR_RTC_FORCE_WAKE_ON_INT);
1041 if (AR_SREV_9100(ah)) {
1042 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1043 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1045 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1047 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1048 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1050 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1053 if (!AR_SREV_9300_20_OR_LATER(ah))
1055 REG_WRITE(ah, AR_RC, val);
1057 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1058 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1060 rst_flags = AR_RTC_RC_MAC_WARM;
1061 if (type == ATH9K_RESET_COLD)
1062 rst_flags |= AR_RTC_RC_MAC_COLD;
1065 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1067 REGWRITE_BUFFER_FLUSH(ah);
1071 REG_WRITE(ah, AR_RTC_RC, 0);
1072 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1073 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
1074 "RTC stuck in MAC reset\n");
1078 if (!AR_SREV_9100(ah))
1079 REG_WRITE(ah, AR_RC, 0);
1081 if (AR_SREV_9100(ah))
1087 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1089 ENABLE_REGWRITE_BUFFER(ah);
1091 if (AR_SREV_9300_20_OR_LATER(ah)) {
1092 REG_WRITE(ah, AR_WA, ah->WARegVal);
1096 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1097 AR_RTC_FORCE_WAKE_ON_INT);
1099 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1100 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1102 REG_WRITE(ah, AR_RTC_RESET, 0);
1104 REGWRITE_BUFFER_FLUSH(ah);
1106 if (!AR_SREV_9300_20_OR_LATER(ah))
1109 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1110 REG_WRITE(ah, AR_RC, 0);
1112 REG_WRITE(ah, AR_RTC_RESET, 1);
1114 if (!ath9k_hw_wait(ah,
1119 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
1120 "RTC not waking up\n");
1124 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1127 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1129 if (AR_SREV_9300_20_OR_LATER(ah)) {
1130 REG_WRITE(ah, AR_WA, ah->WARegVal);
1134 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1135 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1138 case ATH9K_RESET_POWER_ON:
1139 return ath9k_hw_set_reset_power_on(ah);
1140 case ATH9K_RESET_WARM:
1141 case ATH9K_RESET_COLD:
1142 return ath9k_hw_set_reset(ah, type);
1148 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1149 struct ath9k_channel *chan)
1151 if (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)) {
1152 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON))
1154 } else if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
1157 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1160 ah->chip_fullsleep = false;
1161 ath9k_hw_init_pll(ah, chan);
1162 ath9k_hw_set_rfmode(ah, chan);
1167 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1168 struct ath9k_channel *chan)
1170 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
1171 struct ath_common *common = ath9k_hw_common(ah);
1172 struct ieee80211_channel *channel = chan->chan;
1176 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1177 if (ath9k_hw_numtxpending(ah, qnum)) {
1178 ath_dbg(common, ATH_DBG_QUEUE,
1179 "Transmit frames pending on queue %d\n", qnum);
1184 if (!ath9k_hw_rfbus_req(ah)) {
1185 ath_err(common, "Could not kill baseband RX\n");
1189 ath9k_hw_set_channel_regs(ah, chan);
1191 r = ath9k_hw_rf_set_freq(ah, chan);
1193 ath_err(common, "Failed to set channel\n");
1196 ath9k_hw_set_clockrate(ah);
1198 ah->eep_ops->set_txpower(ah, chan,
1199 ath9k_regd_get_ctl(regulatory, chan),
1200 channel->max_antenna_gain * 2,
1201 channel->max_power * 2,
1202 min((u32) MAX_RATE_POWER,
1203 (u32) regulatory->power_limit), false);
1205 ath9k_hw_rfbus_done(ah);
1207 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1208 ath9k_hw_set_delta_slope(ah, chan);
1210 ath9k_hw_spur_mitigate_freq(ah, chan);
1215 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1217 u32 gpio_mask = ah->gpio_mask;
1220 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1221 if (!(gpio_mask & 1))
1224 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1225 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1229 bool ath9k_hw_check_alive(struct ath_hw *ah)
1234 if (AR_SREV_9285_12_OR_LATER(ah))
1238 reg = REG_READ(ah, AR_OBS_BUS_1);
1240 if ((reg & 0x7E7FFFEF) == 0x00702400)
1243 switch (reg & 0x7E000B00) {
1251 } while (count-- > 0);
1255 EXPORT_SYMBOL(ath9k_hw_check_alive);
1257 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1258 struct ath9k_hw_cal_data *caldata, bool bChannelChange)
1260 struct ath_common *common = ath9k_hw_common(ah);
1262 struct ath9k_channel *curchan = ah->curchan;
1268 ah->txchainmask = common->tx_chainmask;
1269 ah->rxchainmask = common->rx_chainmask;
1271 if ((common->bus_ops->ath_bus_type != ATH_USB) && !ah->chip_fullsleep) {
1272 ath9k_hw_abortpcurecv(ah);
1273 if (!ath9k_hw_stopdmarecv(ah)) {
1274 ath_dbg(common, ATH_DBG_XMIT,
1275 "Failed to stop receive dma\n");
1276 bChannelChange = false;
1280 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1283 if (curchan && !ah->chip_fullsleep)
1284 ath9k_hw_getnf(ah, curchan);
1286 ah->caldata = caldata;
1288 (chan->channel != caldata->channel ||
1289 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1290 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1291 /* Operating channel changed, reset channel calibration data */
1292 memset(caldata, 0, sizeof(*caldata));
1293 ath9k_init_nfcal_hist_buffer(ah, chan);
1296 if (bChannelChange &&
1297 (ah->chip_fullsleep != true) &&
1298 (ah->curchan != NULL) &&
1299 (chan->channel != ah->curchan->channel) &&
1300 ((chan->channelFlags & CHANNEL_ALL) ==
1301 (ah->curchan->channelFlags & CHANNEL_ALL)) &&
1302 (!AR_SREV_9280(ah) || AR_DEVID_7010(ah))) {
1304 if (ath9k_hw_channel_change(ah, chan)) {
1305 ath9k_hw_loadnf(ah, ah->curchan);
1306 ath9k_hw_start_nfcal(ah, true);
1307 if (AR_SREV_9271(ah))
1308 ar9002_hw_load_ani_reg(ah, chan);
1313 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1314 if (saveDefAntenna == 0)
1317 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1319 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1320 if (AR_SREV_9100(ah) ||
1321 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1322 tsf = ath9k_hw_gettsf64(ah);
1324 saveLedState = REG_READ(ah, AR_CFG_LED) &
1325 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1326 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1328 ath9k_hw_mark_phy_inactive(ah);
1330 ah->paprd_table_write_done = false;
1332 /* Only required on the first reset */
1333 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1335 AR9271_RESET_POWER_DOWN_CONTROL,
1336 AR9271_RADIO_RF_RST);
1340 if (!ath9k_hw_chip_reset(ah, chan)) {
1341 ath_err(common, "Chip reset failed\n");
1345 /* Only required on the first reset */
1346 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1347 ah->htc_reset_init = false;
1349 AR9271_RESET_POWER_DOWN_CONTROL,
1350 AR9271_GATE_MAC_CTL);
1356 ath9k_hw_settsf64(ah, tsf);
1358 if (AR_SREV_9280_20_OR_LATER(ah))
1359 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1361 if (!AR_SREV_9300_20_OR_LATER(ah))
1362 ar9002_hw_enable_async_fifo(ah);
1364 r = ath9k_hw_process_ini(ah, chan);
1369 * Some AR91xx SoC devices frequently fail to accept TSF writes
1370 * right after the chip reset. When that happens, write a new
1371 * value after the initvals have been applied, with an offset
1372 * based on measured time difference
1374 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1376 ath9k_hw_settsf64(ah, tsf);
1379 /* Setup MFP options for CCMP */
1380 if (AR_SREV_9280_20_OR_LATER(ah)) {
1381 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1382 * frames when constructing CCMP AAD. */
1383 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1385 ah->sw_mgmt_crypto = false;
1386 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1387 /* Disable hardware crypto for management frames */
1388 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1389 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1390 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1391 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1392 ah->sw_mgmt_crypto = true;
1394 ah->sw_mgmt_crypto = true;
1396 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1397 ath9k_hw_set_delta_slope(ah, chan);
1399 ath9k_hw_spur_mitigate_freq(ah, chan);
1400 ah->eep_ops->set_board_values(ah, chan);
1402 ENABLE_REGWRITE_BUFFER(ah);
1404 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1405 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1407 | AR_STA_ID1_RTS_USE_DEF
1409 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1410 | ah->sta_id1_defaults);
1411 ath_hw_setbssidmask(common);
1412 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1413 ath9k_hw_write_associd(ah);
1414 REG_WRITE(ah, AR_ISR, ~0);
1415 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1417 REGWRITE_BUFFER_FLUSH(ah);
1419 ath9k_hw_set_operating_mode(ah, ah->opmode);
1421 r = ath9k_hw_rf_set_freq(ah, chan);
1425 ath9k_hw_set_clockrate(ah);
1427 ENABLE_REGWRITE_BUFFER(ah);
1429 for (i = 0; i < AR_NUM_DCU; i++)
1430 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1432 REGWRITE_BUFFER_FLUSH(ah);
1435 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1436 ath9k_hw_resettxqueue(ah, i);
1438 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1439 ath9k_hw_ani_cache_ini_regs(ah);
1440 ath9k_hw_init_qos(ah);
1442 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1443 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1445 ath9k_hw_init_global_settings(ah);
1447 if (!AR_SREV_9300_20_OR_LATER(ah)) {
1448 ar9002_hw_update_async_fifo(ah);
1449 ar9002_hw_enable_wep_aggregation(ah);
1452 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1454 ath9k_hw_set_dma(ah);
1456 REG_WRITE(ah, AR_OBS, 8);
1458 if (ah->config.rx_intr_mitigation) {
1459 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1460 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1463 if (ah->config.tx_intr_mitigation) {
1464 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1465 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1468 ath9k_hw_init_bb(ah, chan);
1470 if (!ath9k_hw_init_cal(ah, chan))
1473 ENABLE_REGWRITE_BUFFER(ah);
1475 ath9k_hw_restore_chainmask(ah);
1476 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1478 REGWRITE_BUFFER_FLUSH(ah);
1481 * For big endian systems turn on swapping for descriptors
1483 if (AR_SREV_9100(ah)) {
1485 mask = REG_READ(ah, AR_CFG);
1486 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1487 ath_dbg(common, ATH_DBG_RESET,
1488 "CFG Byte Swap Set 0x%x\n", mask);
1491 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1492 REG_WRITE(ah, AR_CFG, mask);
1493 ath_dbg(common, ATH_DBG_RESET,
1494 "Setting CFG 0x%x\n", REG_READ(ah, AR_CFG));
1497 if (common->bus_ops->ath_bus_type == ATH_USB) {
1498 /* Configure AR9271 target WLAN */
1499 if (AR_SREV_9271(ah))
1500 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1502 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1506 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1510 if (ah->btcoex_hw.enabled)
1511 ath9k_hw_btcoex_enable(ah);
1513 if (AR_SREV_9300_20_OR_LATER(ah))
1514 ar9003_hw_bb_watchdog_config(ah);
1516 ath9k_hw_apply_gpio_override(ah);
1520 EXPORT_SYMBOL(ath9k_hw_reset);
1522 /******************************/
1523 /* Power Management (Chipset) */
1524 /******************************/
1527 * Notify Power Mgt is disabled in self-generated frames.
1528 * If requested, force chip to sleep.
1530 static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
1532 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1535 * Clear the RTC force wake bit to allow the
1536 * mac to go to sleep.
1538 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1539 AR_RTC_FORCE_WAKE_EN);
1540 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1541 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
1543 /* Shutdown chip. Active low */
1544 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah))
1545 REG_CLR_BIT(ah, (AR_RTC_RESET),
1549 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
1550 if (AR_SREV_9300_20_OR_LATER(ah))
1551 REG_WRITE(ah, AR_WA,
1552 ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1556 * Notify Power Management is enabled in self-generating
1557 * frames. If request, set power mode of chip to
1558 * auto/normal. Duration in units of 128us (1/8 TU).
1560 static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip)
1562 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1564 struct ath9k_hw_capabilities *pCap = &ah->caps;
1566 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1567 /* Set WakeOnInterrupt bit; clear ForceWake bit */
1568 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1569 AR_RTC_FORCE_WAKE_ON_INT);
1572 * Clear the RTC force wake bit to allow the
1573 * mac to go to sleep.
1575 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1576 AR_RTC_FORCE_WAKE_EN);
1580 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
1581 if (AR_SREV_9300_20_OR_LATER(ah))
1582 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1585 static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
1590 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
1591 if (AR_SREV_9300_20_OR_LATER(ah)) {
1592 REG_WRITE(ah, AR_WA, ah->WARegVal);
1597 if ((REG_READ(ah, AR_RTC_STATUS) &
1598 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
1599 if (ath9k_hw_set_reset_reg(ah,
1600 ATH9K_RESET_POWER_ON) != true) {
1603 if (!AR_SREV_9300_20_OR_LATER(ah))
1604 ath9k_hw_init_pll(ah, NULL);
1606 if (AR_SREV_9100(ah))
1607 REG_SET_BIT(ah, AR_RTC_RESET,
1610 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1611 AR_RTC_FORCE_WAKE_EN);
1614 for (i = POWER_UP_TIME / 50; i > 0; i--) {
1615 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
1616 if (val == AR_RTC_STATUS_ON)
1619 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1620 AR_RTC_FORCE_WAKE_EN);
1623 ath_err(ath9k_hw_common(ah),
1624 "Failed to wakeup in %uus\n",
1625 POWER_UP_TIME / 20);
1630 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1635 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
1637 struct ath_common *common = ath9k_hw_common(ah);
1638 int status = true, setChip = true;
1639 static const char *modes[] = {
1646 if (ah->power_mode == mode)
1649 ath_dbg(common, ATH_DBG_RESET, "%s -> %s\n",
1650 modes[ah->power_mode], modes[mode]);
1653 case ATH9K_PM_AWAKE:
1654 status = ath9k_hw_set_power_awake(ah, setChip);
1656 case ATH9K_PM_FULL_SLEEP:
1657 ath9k_set_power_sleep(ah, setChip);
1658 ah->chip_fullsleep = true;
1660 case ATH9K_PM_NETWORK_SLEEP:
1661 ath9k_set_power_network_sleep(ah, setChip);
1664 ath_err(common, "Unknown power mode %u\n", mode);
1667 ah->power_mode = mode;
1670 * XXX: If this warning never comes up after a while then
1671 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
1672 * ath9k_hw_setpower() return type void.
1675 if (!(ah->ah_flags & AH_UNPLUGGED))
1676 ATH_DBG_WARN_ON_ONCE(!status);
1680 EXPORT_SYMBOL(ath9k_hw_setpower);
1682 /*******************/
1683 /* Beacon Handling */
1684 /*******************/
1686 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
1690 ENABLE_REGWRITE_BUFFER(ah);
1692 switch (ah->opmode) {
1693 case NL80211_IFTYPE_ADHOC:
1694 case NL80211_IFTYPE_MESH_POINT:
1695 REG_SET_BIT(ah, AR_TXCFG,
1696 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
1697 REG_WRITE(ah, AR_NEXT_NDP_TIMER, next_beacon +
1698 TU_TO_USEC(ah->atim_window ? ah->atim_window : 1));
1699 flags |= AR_NDP_TIMER_EN;
1700 case NL80211_IFTYPE_AP:
1701 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
1702 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
1703 TU_TO_USEC(ah->config.dma_beacon_response_time));
1704 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
1705 TU_TO_USEC(ah->config.sw_beacon_response_time));
1707 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
1710 ath_dbg(ath9k_hw_common(ah), ATH_DBG_BEACON,
1711 "%s: unsupported opmode: %d\n",
1712 __func__, ah->opmode);
1717 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
1718 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
1719 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
1720 REG_WRITE(ah, AR_NDP_PERIOD, beacon_period);
1722 REGWRITE_BUFFER_FLUSH(ah);
1724 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
1726 EXPORT_SYMBOL(ath9k_hw_beaconinit);
1728 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
1729 const struct ath9k_beacon_state *bs)
1731 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
1732 struct ath9k_hw_capabilities *pCap = &ah->caps;
1733 struct ath_common *common = ath9k_hw_common(ah);
1735 ENABLE_REGWRITE_BUFFER(ah);
1737 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
1739 REG_WRITE(ah, AR_BEACON_PERIOD,
1740 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
1741 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
1742 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
1744 REGWRITE_BUFFER_FLUSH(ah);
1746 REG_RMW_FIELD(ah, AR_RSSI_THR,
1747 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
1749 beaconintval = bs->bs_intval & ATH9K_BEACON_PERIOD;
1751 if (bs->bs_sleepduration > beaconintval)
1752 beaconintval = bs->bs_sleepduration;
1754 dtimperiod = bs->bs_dtimperiod;
1755 if (bs->bs_sleepduration > dtimperiod)
1756 dtimperiod = bs->bs_sleepduration;
1758 if (beaconintval == dtimperiod)
1759 nextTbtt = bs->bs_nextdtim;
1761 nextTbtt = bs->bs_nexttbtt;
1763 ath_dbg(common, ATH_DBG_BEACON, "next DTIM %d\n", bs->bs_nextdtim);
1764 ath_dbg(common, ATH_DBG_BEACON, "next beacon %d\n", nextTbtt);
1765 ath_dbg(common, ATH_DBG_BEACON, "beacon period %d\n", beaconintval);
1766 ath_dbg(common, ATH_DBG_BEACON, "DTIM period %d\n", dtimperiod);
1768 ENABLE_REGWRITE_BUFFER(ah);
1770 REG_WRITE(ah, AR_NEXT_DTIM,
1771 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
1772 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
1774 REG_WRITE(ah, AR_SLEEP1,
1775 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
1776 | AR_SLEEP1_ASSUME_DTIM);
1778 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
1779 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
1781 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
1783 REG_WRITE(ah, AR_SLEEP2,
1784 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
1786 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
1787 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
1789 REGWRITE_BUFFER_FLUSH(ah);
1791 REG_SET_BIT(ah, AR_TIMER_MODE,
1792 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
1795 /* TSF Out of Range Threshold */
1796 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
1798 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
1800 /*******************/
1801 /* HW Capabilities */
1802 /*******************/
1804 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
1806 struct ath9k_hw_capabilities *pCap = &ah->caps;
1807 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
1808 struct ath_common *common = ath9k_hw_common(ah);
1809 struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
1811 u16 capField = 0, eeval;
1812 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
1814 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
1815 regulatory->current_rd = eeval;
1817 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_1);
1818 if (AR_SREV_9285_12_OR_LATER(ah))
1819 eeval |= AR9285_RDEXT_DEFAULT;
1820 regulatory->current_rd_ext = eeval;
1822 capField = ah->eep_ops->get_eeprom(ah, EEP_OP_CAP);
1824 if (ah->opmode != NL80211_IFTYPE_AP &&
1825 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
1826 if (regulatory->current_rd == 0x64 ||
1827 regulatory->current_rd == 0x65)
1828 regulatory->current_rd += 5;
1829 else if (regulatory->current_rd == 0x41)
1830 regulatory->current_rd = 0x43;
1831 ath_dbg(common, ATH_DBG_REGULATORY,
1832 "regdomain mapped to 0x%x\n", regulatory->current_rd);
1835 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
1836 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
1838 "no band has been marked as supported in EEPROM\n");
1842 if (eeval & AR5416_OPFLAGS_11A)
1843 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
1845 if (eeval & AR5416_OPFLAGS_11G)
1846 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
1848 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
1850 * For AR9271 we will temporarilly uses the rx chainmax as read from
1853 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
1854 !(eeval & AR5416_OPFLAGS_11A) &&
1855 !(AR_SREV_9271(ah)))
1856 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
1857 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
1858 else if (AR_SREV_9100(ah))
1859 pCap->rx_chainmask = 0x7;
1861 /* Use rx_chainmask from EEPROM. */
1862 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
1864 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
1866 /* enable key search for every frame in an aggregate */
1867 if (AR_SREV_9300_20_OR_LATER(ah))
1868 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
1870 pCap->low_2ghz_chan = 2312;
1871 pCap->high_2ghz_chan = 2732;
1873 pCap->low_5ghz_chan = 4920;
1874 pCap->high_5ghz_chan = 6100;
1876 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
1878 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
1879 pCap->hw_caps |= ATH9K_HW_CAP_HT;
1881 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
1883 if (AR_SREV_9271(ah))
1884 pCap->num_gpio_pins = AR9271_NUM_GPIO;
1885 else if (AR_DEVID_7010(ah))
1886 pCap->num_gpio_pins = AR7010_NUM_GPIO;
1887 else if (AR_SREV_9285_12_OR_LATER(ah))
1888 pCap->num_gpio_pins = AR9285_NUM_GPIO;
1889 else if (AR_SREV_9280_20_OR_LATER(ah))
1890 pCap->num_gpio_pins = AR928X_NUM_GPIO;
1892 pCap->num_gpio_pins = AR_NUM_GPIO;
1894 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah)) {
1895 pCap->hw_caps |= ATH9K_HW_CAP_CST;
1896 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
1898 pCap->rts_aggr_limit = (8 * 1024);
1901 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1902 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
1903 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
1905 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
1906 ah->rfkill_polarity =
1907 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
1909 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
1912 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
1913 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
1915 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
1917 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
1918 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
1920 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
1922 if (AR_SREV_9280_20_OR_LATER(ah) && common->btcoex_enabled) {
1923 btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO;
1924 btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO;
1926 if (AR_SREV_9285(ah)) {
1927 btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
1928 btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO;
1930 btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
1933 btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
1936 if (AR_SREV_9300_20_OR_LATER(ah)) {
1937 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
1938 if (!AR_SREV_9485(ah))
1939 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
1941 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
1942 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
1943 pCap->rx_status_len = sizeof(struct ar9003_rxs);
1944 pCap->tx_desc_len = sizeof(struct ar9003_txc);
1945 pCap->txs_len = sizeof(struct ar9003_txs);
1946 if (!ah->config.paprd_disable &&
1947 ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
1948 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
1950 pCap->tx_desc_len = sizeof(struct ath_desc);
1951 if (AR_SREV_9280_20(ah) &&
1952 ((ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV) <=
1953 AR5416_EEP_MINOR_VER_16) ||
1954 ah->eep_ops->get_eeprom(ah, EEP_FSTCLK_5G)))
1955 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
1958 if (AR_SREV_9300_20_OR_LATER(ah))
1959 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
1961 if (AR_SREV_9300_20_OR_LATER(ah))
1962 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
1964 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
1965 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
1967 if (AR_SREV_9285(ah))
1968 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
1970 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
1971 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
1972 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
1974 if (AR_SREV_9300_20_OR_LATER(ah)) {
1975 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
1976 pCap->hw_caps |= ATH9K_HW_CAP_APM;
1981 if (AR_SREV_9485_10(ah)) {
1982 pCap->pcie_lcr_extsync_en = true;
1983 pCap->pcie_lcr_offset = 0x80;
1986 tx_chainmask = pCap->tx_chainmask;
1987 rx_chainmask = pCap->rx_chainmask;
1988 while (tx_chainmask || rx_chainmask) {
1989 if (tx_chainmask & BIT(0))
1990 pCap->max_txchains++;
1991 if (rx_chainmask & BIT(0))
1992 pCap->max_rxchains++;
2001 /****************************/
2002 /* GPIO / RFKILL / Antennae */
2003 /****************************/
2005 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2009 u32 gpio_shift, tmp;
2012 addr = AR_GPIO_OUTPUT_MUX3;
2014 addr = AR_GPIO_OUTPUT_MUX2;
2016 addr = AR_GPIO_OUTPUT_MUX1;
2018 gpio_shift = (gpio % 6) * 5;
2020 if (AR_SREV_9280_20_OR_LATER(ah)
2021 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2022 REG_RMW(ah, addr, (type << gpio_shift),
2023 (0x1f << gpio_shift));
2025 tmp = REG_READ(ah, addr);
2026 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2027 tmp &= ~(0x1f << gpio_shift);
2028 tmp |= (type << gpio_shift);
2029 REG_WRITE(ah, addr, tmp);
2033 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2037 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2039 if (AR_DEVID_7010(ah)) {
2041 REG_RMW(ah, AR7010_GPIO_OE,
2042 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2043 (AR7010_GPIO_OE_MASK << gpio_shift));
2047 gpio_shift = gpio << 1;
2050 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2051 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2053 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2055 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2057 #define MS_REG_READ(x, y) \
2058 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2060 if (gpio >= ah->caps.num_gpio_pins)
2063 if (AR_DEVID_7010(ah)) {
2065 val = REG_READ(ah, AR7010_GPIO_IN);
2066 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2067 } else if (AR_SREV_9300_20_OR_LATER(ah))
2068 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2069 AR_GPIO_BIT(gpio)) != 0;
2070 else if (AR_SREV_9271(ah))
2071 return MS_REG_READ(AR9271, gpio) != 0;
2072 else if (AR_SREV_9287_11_OR_LATER(ah))
2073 return MS_REG_READ(AR9287, gpio) != 0;
2074 else if (AR_SREV_9285_12_OR_LATER(ah))
2075 return MS_REG_READ(AR9285, gpio) != 0;
2076 else if (AR_SREV_9280_20_OR_LATER(ah))
2077 return MS_REG_READ(AR928X, gpio) != 0;
2079 return MS_REG_READ(AR, gpio) != 0;
2081 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2083 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2088 if (AR_DEVID_7010(ah)) {
2090 REG_RMW(ah, AR7010_GPIO_OE,
2091 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2092 (AR7010_GPIO_OE_MASK << gpio_shift));
2096 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2097 gpio_shift = 2 * gpio;
2100 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2101 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2103 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2105 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2107 if (AR_DEVID_7010(ah)) {
2109 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2114 if (AR_SREV_9271(ah))
2117 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2120 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2122 u32 ath9k_hw_getdefantenna(struct ath_hw *ah)
2124 return REG_READ(ah, AR_DEF_ANTENNA) & 0x7;
2126 EXPORT_SYMBOL(ath9k_hw_getdefantenna);
2128 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2130 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2132 EXPORT_SYMBOL(ath9k_hw_setantenna);
2134 /*********************/
2135 /* General Operation */
2136 /*********************/
2138 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2140 u32 bits = REG_READ(ah, AR_RX_FILTER);
2141 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2143 if (phybits & AR_PHY_ERR_RADAR)
2144 bits |= ATH9K_RX_FILTER_PHYRADAR;
2145 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2146 bits |= ATH9K_RX_FILTER_PHYERR;
2150 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2152 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2156 ENABLE_REGWRITE_BUFFER(ah);
2158 REG_WRITE(ah, AR_RX_FILTER, bits);
2161 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2162 phybits |= AR_PHY_ERR_RADAR;
2163 if (bits & ATH9K_RX_FILTER_PHYERR)
2164 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2165 REG_WRITE(ah, AR_PHY_ERR, phybits);
2168 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2170 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2172 REGWRITE_BUFFER_FLUSH(ah);
2174 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2176 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2178 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2181 ath9k_hw_init_pll(ah, NULL);
2184 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2186 bool ath9k_hw_disable(struct ath_hw *ah)
2188 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2191 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2194 ath9k_hw_init_pll(ah, NULL);
2197 EXPORT_SYMBOL(ath9k_hw_disable);
2199 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2201 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2202 struct ath9k_channel *chan = ah->curchan;
2203 struct ieee80211_channel *channel = chan->chan;
2205 regulatory->power_limit = min(limit, (u32) MAX_RATE_POWER);
2207 ah->eep_ops->set_txpower(ah, chan,
2208 ath9k_regd_get_ctl(regulatory, chan),
2209 channel->max_antenna_gain * 2,
2210 channel->max_power * 2,
2211 min((u32) MAX_RATE_POWER,
2212 (u32) regulatory->power_limit), test);
2214 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2216 void ath9k_hw_setopmode(struct ath_hw *ah)
2218 ath9k_hw_set_operating_mode(ah, ah->opmode);
2220 EXPORT_SYMBOL(ath9k_hw_setopmode);
2222 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2224 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2225 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2227 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2229 void ath9k_hw_write_associd(struct ath_hw *ah)
2231 struct ath_common *common = ath9k_hw_common(ah);
2233 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2234 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2235 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2237 EXPORT_SYMBOL(ath9k_hw_write_associd);
2239 #define ATH9K_MAX_TSF_READ 10
2241 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2243 u32 tsf_lower, tsf_upper1, tsf_upper2;
2246 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2247 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2248 tsf_lower = REG_READ(ah, AR_TSF_L32);
2249 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2250 if (tsf_upper2 == tsf_upper1)
2252 tsf_upper1 = tsf_upper2;
2255 WARN_ON( i == ATH9K_MAX_TSF_READ );
2257 return (((u64)tsf_upper1 << 32) | tsf_lower);
2259 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2261 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2263 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2264 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2266 EXPORT_SYMBOL(ath9k_hw_settsf64);
2268 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2270 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2271 AH_TSF_WRITE_TIMEOUT))
2272 ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
2273 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2275 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2277 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2279 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)
2282 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2284 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2286 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2288 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2290 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2293 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2294 macmode = AR_2040_JOINED_RX_CLEAR;
2298 REG_WRITE(ah, AR_2040_MODE, macmode);
2301 /* HW Generic timers configuration */
2303 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2305 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2306 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2307 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2308 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2309 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2310 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2311 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2312 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2313 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2314 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2315 AR_NDP2_TIMER_MODE, 0x0002},
2316 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2317 AR_NDP2_TIMER_MODE, 0x0004},
2318 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2319 AR_NDP2_TIMER_MODE, 0x0008},
2320 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2321 AR_NDP2_TIMER_MODE, 0x0010},
2322 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2323 AR_NDP2_TIMER_MODE, 0x0020},
2324 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2325 AR_NDP2_TIMER_MODE, 0x0040},
2326 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2327 AR_NDP2_TIMER_MODE, 0x0080}
2330 /* HW generic timer primitives */
2332 /* compute and clear index of rightmost 1 */
2333 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2343 return timer_table->gen_timer_index[b];
2346 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2348 return REG_READ(ah, AR_TSF_L32);
2350 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2352 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2353 void (*trigger)(void *),
2354 void (*overflow)(void *),
2358 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2359 struct ath_gen_timer *timer;
2361 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2363 if (timer == NULL) {
2364 ath_err(ath9k_hw_common(ah),
2365 "Failed to allocate memory for hw timer[%d]\n",
2370 /* allocate a hardware generic timer slot */
2371 timer_table->timers[timer_index] = timer;
2372 timer->index = timer_index;
2373 timer->trigger = trigger;
2374 timer->overflow = overflow;
2379 EXPORT_SYMBOL(ath_gen_timer_alloc);
2381 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2382 struct ath_gen_timer *timer,
2386 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2389 BUG_ON(!timer_period);
2391 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
2393 tsf = ath9k_hw_gettsf32(ah);
2395 ath_dbg(ath9k_hw_common(ah), ATH_DBG_HWTIMER,
2396 "current tsf %x period %x timer_next %x\n",
2397 tsf, timer_period, timer_next);
2400 * Pull timer_next forward if the current TSF already passed it
2401 * because of software latency
2403 if (timer_next < tsf)
2404 timer_next = tsf + timer_period;
2407 * Program generic timer registers
2409 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
2411 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
2413 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2414 gen_tmr_configuration[timer->index].mode_mask);
2416 /* Enable both trigger and thresh interrupt masks */
2417 REG_SET_BIT(ah, AR_IMR_S5,
2418 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2419 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2421 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
2423 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
2425 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2427 if ((timer->index < AR_FIRST_NDP_TIMER) ||
2428 (timer->index >= ATH_MAX_GEN_TIMER)) {
2432 /* Clear generic timer enable bits. */
2433 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2434 gen_tmr_configuration[timer->index].mode_mask);
2436 /* Disable both trigger and thresh interrupt masks */
2437 REG_CLR_BIT(ah, AR_IMR_S5,
2438 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2439 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2441 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
2443 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
2445 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
2447 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2449 /* free the hardware generic timer slot */
2450 timer_table->timers[timer->index] = NULL;
2453 EXPORT_SYMBOL(ath_gen_timer_free);
2456 * Generic Timer Interrupts handling
2458 void ath_gen_timer_isr(struct ath_hw *ah)
2460 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2461 struct ath_gen_timer *timer;
2462 struct ath_common *common = ath9k_hw_common(ah);
2463 u32 trigger_mask, thresh_mask, index;
2465 /* get hardware generic timer interrupt status */
2466 trigger_mask = ah->intr_gen_timer_trigger;
2467 thresh_mask = ah->intr_gen_timer_thresh;
2468 trigger_mask &= timer_table->timer_mask.val;
2469 thresh_mask &= timer_table->timer_mask.val;
2471 trigger_mask &= ~thresh_mask;
2473 while (thresh_mask) {
2474 index = rightmost_index(timer_table, &thresh_mask);
2475 timer = timer_table->timers[index];
2477 ath_dbg(common, ATH_DBG_HWTIMER,
2478 "TSF overflow for Gen timer %d\n", index);
2479 timer->overflow(timer->arg);
2482 while (trigger_mask) {
2483 index = rightmost_index(timer_table, &trigger_mask);
2484 timer = timer_table->timers[index];
2486 ath_dbg(common, ATH_DBG_HWTIMER,
2487 "Gen timer[%d] trigger\n", index);
2488 timer->trigger(timer->arg);
2491 EXPORT_SYMBOL(ath_gen_timer_isr);
2497 void ath9k_hw_htc_resetinit(struct ath_hw *ah)
2499 ah->htc_reset_init = true;
2501 EXPORT_SYMBOL(ath9k_hw_htc_resetinit);
2506 } ath_mac_bb_names[] = {
2507 /* Devices with external radios */
2508 { AR_SREV_VERSION_5416_PCI, "5416" },
2509 { AR_SREV_VERSION_5416_PCIE, "5418" },
2510 { AR_SREV_VERSION_9100, "9100" },
2511 { AR_SREV_VERSION_9160, "9160" },
2512 /* Single-chip solutions */
2513 { AR_SREV_VERSION_9280, "9280" },
2514 { AR_SREV_VERSION_9285, "9285" },
2515 { AR_SREV_VERSION_9287, "9287" },
2516 { AR_SREV_VERSION_9271, "9271" },
2517 { AR_SREV_VERSION_9300, "9300" },
2520 /* For devices with external radios */
2524 } ath_rf_names[] = {
2526 { AR_RAD5133_SREV_MAJOR, "5133" },
2527 { AR_RAD5122_SREV_MAJOR, "5122" },
2528 { AR_RAD2133_SREV_MAJOR, "2133" },
2529 { AR_RAD2122_SREV_MAJOR, "2122" }
2533 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
2535 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
2539 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
2540 if (ath_mac_bb_names[i].version == mac_bb_version) {
2541 return ath_mac_bb_names[i].name;
2549 * Return the RF name. "????" is returned if the RF is unknown.
2550 * Used for devices with external radios.
2552 static const char *ath9k_hw_rf_name(u16 rf_version)
2556 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
2557 if (ath_rf_names[i].version == rf_version) {
2558 return ath_rf_names[i].name;
2565 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
2569 /* chipsets >= AR9280 are single-chip */
2570 if (AR_SREV_9280_20_OR_LATER(ah)) {
2571 used = snprintf(hw_name, len,
2572 "Atheros AR%s Rev:%x",
2573 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
2574 ah->hw_version.macRev);
2577 used = snprintf(hw_name, len,
2578 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
2579 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
2580 ah->hw_version.macRev,
2581 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
2582 AR_RADIO_SREV_MAJOR)),
2583 ah->hw_version.phyRev);
2586 hw_name[used] = '\0';
2588 EXPORT_SYMBOL(ath9k_hw_name);