2 * Copyright (c) 2008-2011 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <linux/slab.h>
19 #include <linux/module.h>
20 #include <linux/time.h>
21 #include <linux/bitops.h>
22 #include <asm/unaligned.h>
27 #include "ar9003_mac.h"
28 #include "ar9003_mci.h"
29 #include "ar9003_phy.h"
33 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
35 MODULE_AUTHOR("Atheros Communications");
36 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
37 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
38 MODULE_LICENSE("Dual BSD/GPL");
40 static int __init ath9k_init(void)
44 module_init(ath9k_init);
46 static void __exit ath9k_exit(void)
50 module_exit(ath9k_exit);
52 /* Private hardware callbacks */
54 static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
56 ath9k_hw_private_ops(ah)->init_cal_settings(ah);
59 static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
60 struct ath9k_channel *chan)
62 return ath9k_hw_private_ops(ah)->compute_pll_control(ah, chan);
65 static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah)
67 if (!ath9k_hw_private_ops(ah)->init_mode_gain_regs)
70 ath9k_hw_private_ops(ah)->init_mode_gain_regs(ah);
73 static void ath9k_hw_ani_cache_ini_regs(struct ath_hw *ah)
75 /* You will not have this callback if using the old ANI */
76 if (!ath9k_hw_private_ops(ah)->ani_cache_ini_regs)
79 ath9k_hw_private_ops(ah)->ani_cache_ini_regs(ah);
82 /********************/
83 /* Helper Functions */
84 /********************/
86 #ifdef CONFIG_ATH9K_DEBUGFS
91 static void ath9k_hw_set_clockrate(struct ath_hw *ah)
93 struct ath_common *common = ath9k_hw_common(ah);
94 struct ath9k_channel *chan = ah->curchan;
95 unsigned int clockrate;
97 /* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
98 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
100 else if (!chan) /* should really check for CCK instead */
101 clockrate = ATH9K_CLOCK_RATE_CCK;
102 else if (IS_CHAN_2GHZ(chan))
103 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
104 else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
105 clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
107 clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
110 if (IS_CHAN_HT40(chan))
112 if (IS_CHAN_HALF_RATE(chan))
114 if (IS_CHAN_QUARTER_RATE(chan))
118 common->clockrate = clockrate;
121 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
123 struct ath_common *common = ath9k_hw_common(ah);
125 return usecs * common->clockrate;
128 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
132 BUG_ON(timeout < AH_TIME_QUANTUM);
134 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
135 if ((REG_READ(ah, reg) & mask) == val)
138 udelay(AH_TIME_QUANTUM);
141 ath_dbg(ath9k_hw_common(ah), ANY,
142 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
143 timeout, reg, REG_READ(ah, reg), mask, val);
147 EXPORT_SYMBOL(ath9k_hw_wait);
149 void ath9k_hw_synth_delay(struct ath_hw *ah, struct ath9k_channel *chan,
154 if (IS_CHAN_HALF_RATE(chan))
156 else if (IS_CHAN_QUARTER_RATE(chan))
159 udelay(hw_delay + BASE_ACTIVATE_DELAY);
162 void ath9k_hw_write_array(struct ath_hw *ah, const struct ar5416IniArray *array,
163 int column, unsigned int *writecnt)
167 ENABLE_REGWRITE_BUFFER(ah);
168 for (r = 0; r < array->ia_rows; r++) {
169 REG_WRITE(ah, INI_RA(array, r, 0),
170 INI_RA(array, r, column));
173 REGWRITE_BUFFER_FLUSH(ah);
176 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
181 for (i = 0, retval = 0; i < n; i++) {
182 retval = (retval << 1) | (val & 1);
188 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
190 u32 frameLen, u16 rateix,
193 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
199 case WLAN_RC_PHY_CCK:
200 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
203 numBits = frameLen << 3;
204 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
206 case WLAN_RC_PHY_OFDM:
207 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
208 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
209 numBits = OFDM_PLCP_BITS + (frameLen << 3);
210 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
211 txTime = OFDM_SIFS_TIME_QUARTER
212 + OFDM_PREAMBLE_TIME_QUARTER
213 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
214 } else if (ah->curchan &&
215 IS_CHAN_HALF_RATE(ah->curchan)) {
216 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
217 numBits = OFDM_PLCP_BITS + (frameLen << 3);
218 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
219 txTime = OFDM_SIFS_TIME_HALF +
220 OFDM_PREAMBLE_TIME_HALF
221 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
223 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
224 numBits = OFDM_PLCP_BITS + (frameLen << 3);
225 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
226 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
227 + (numSymbols * OFDM_SYMBOL_TIME);
231 ath_err(ath9k_hw_common(ah),
232 "Unknown phy %u (rate ix %u)\n", phy, rateix);
239 EXPORT_SYMBOL(ath9k_hw_computetxtime);
241 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
242 struct ath9k_channel *chan,
243 struct chan_centers *centers)
247 if (!IS_CHAN_HT40(chan)) {
248 centers->ctl_center = centers->ext_center =
249 centers->synth_center = chan->channel;
253 if (IS_CHAN_HT40PLUS(chan)) {
254 centers->synth_center =
255 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
258 centers->synth_center =
259 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
263 centers->ctl_center =
264 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
265 /* 25 MHz spacing is supported by hw but not on upper layers */
266 centers->ext_center =
267 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
274 static void ath9k_hw_read_revisions(struct ath_hw *ah)
278 switch (ah->hw_version.devid) {
279 case AR5416_AR9100_DEVID:
280 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
282 case AR9300_DEVID_AR9330:
283 ah->hw_version.macVersion = AR_SREV_VERSION_9330;
284 if (ah->get_mac_revision) {
285 ah->hw_version.macRev = ah->get_mac_revision();
287 val = REG_READ(ah, AR_SREV);
288 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
291 case AR9300_DEVID_AR9340:
292 ah->hw_version.macVersion = AR_SREV_VERSION_9340;
293 val = REG_READ(ah, AR_SREV);
294 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
296 case AR9300_DEVID_QCA955X:
297 ah->hw_version.macVersion = AR_SREV_VERSION_9550;
301 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
304 val = REG_READ(ah, AR_SREV);
305 ah->hw_version.macVersion =
306 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
307 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
309 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
310 ah->is_pciexpress = true;
312 ah->is_pciexpress = (val &
313 AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
315 if (!AR_SREV_9100(ah))
316 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
318 ah->hw_version.macRev = val & AR_SREV_REVISION;
320 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
321 ah->is_pciexpress = true;
325 /************************************/
326 /* HW Attach, Detach, Init Routines */
327 /************************************/
329 static void ath9k_hw_disablepcie(struct ath_hw *ah)
331 if (!AR_SREV_5416(ah))
334 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
335 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
336 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
337 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
338 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
339 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
340 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
341 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
342 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
344 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
347 /* This should work for all families including legacy */
348 static bool ath9k_hw_chip_test(struct ath_hw *ah)
350 struct ath_common *common = ath9k_hw_common(ah);
351 u32 regAddr[2] = { AR_STA_ID0 };
353 static const u32 patternData[4] = {
354 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
358 if (!AR_SREV_9300_20_OR_LATER(ah)) {
360 regAddr[1] = AR_PHY_BASE + (8 << 2);
364 for (i = 0; i < loop_max; i++) {
365 u32 addr = regAddr[i];
368 regHold[i] = REG_READ(ah, addr);
369 for (j = 0; j < 0x100; j++) {
370 wrData = (j << 16) | j;
371 REG_WRITE(ah, addr, wrData);
372 rdData = REG_READ(ah, addr);
373 if (rdData != wrData) {
375 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
376 addr, wrData, rdData);
380 for (j = 0; j < 4; j++) {
381 wrData = patternData[j];
382 REG_WRITE(ah, addr, wrData);
383 rdData = REG_READ(ah, addr);
384 if (wrData != rdData) {
386 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
387 addr, wrData, rdData);
391 REG_WRITE(ah, regAddr[i], regHold[i]);
398 static void ath9k_hw_init_config(struct ath_hw *ah)
400 ah->config.dma_beacon_response_time = 1;
401 ah->config.sw_beacon_response_time = 6;
402 ah->config.ack_6mb = 0x0;
403 ah->config.cwm_ignore_extcca = 0;
404 ah->config.analog_shiftreg = 1;
406 ah->config.rx_intr_mitigation = true;
409 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
410 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
411 * This means we use it for all AR5416 devices, and the few
412 * minor PCI AR9280 devices out there.
414 * Serialization is required because these devices do not handle
415 * well the case of two concurrent reads/writes due to the latency
416 * involved. During one read/write another read/write can be issued
417 * on another CPU while the previous read/write may still be working
418 * on our hardware, if we hit this case the hardware poops in a loop.
419 * We prevent this by serializing reads and writes.
421 * This issue is not present on PCI-Express devices or pre-AR5416
422 * devices (legacy, 802.11abg).
424 if (num_possible_cpus() > 1)
425 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
428 static void ath9k_hw_init_defaults(struct ath_hw *ah)
430 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
432 regulatory->country_code = CTRY_DEFAULT;
433 regulatory->power_limit = MAX_RATE_POWER;
435 ah->hw_version.magic = AR5416_MAGIC;
436 ah->hw_version.subvendorid = 0;
438 ah->sta_id1_defaults =
439 AR_STA_ID1_CRPT_MIC_ENABLE |
440 AR_STA_ID1_MCAST_KSRCH;
441 if (AR_SREV_9100(ah))
442 ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
443 ah->slottime = ATH9K_SLOT_TIME_9;
444 ah->globaltxtimeout = (u32) -1;
445 ah->power_mode = ATH9K_PM_UNDEFINED;
446 ah->htc_reset_init = true;
449 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
451 struct ath_common *common = ath9k_hw_common(ah);
455 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
458 for (i = 0; i < 3; i++) {
459 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
461 common->macaddr[2 * i] = eeval >> 8;
462 common->macaddr[2 * i + 1] = eeval & 0xff;
464 if (sum == 0 || sum == 0xffff * 3)
465 return -EADDRNOTAVAIL;
470 static int ath9k_hw_post_init(struct ath_hw *ah)
472 struct ath_common *common = ath9k_hw_common(ah);
475 if (common->bus_ops->ath_bus_type != ATH_USB) {
476 if (!ath9k_hw_chip_test(ah))
480 if (!AR_SREV_9300_20_OR_LATER(ah)) {
481 ecode = ar9002_hw_rf_claim(ah);
486 ecode = ath9k_hw_eeprom_init(ah);
490 ath_dbg(ath9k_hw_common(ah), CONFIG, "Eeprom VER: %d, REV: %d\n",
491 ah->eep_ops->get_eeprom_ver(ah),
492 ah->eep_ops->get_eeprom_rev(ah));
494 ath9k_hw_ani_init(ah);
497 * EEPROM needs to be initialized before we do this.
498 * This is required for regulatory compliance.
500 if (AR_SREV_9300_20_OR_LATER(ah)) {
501 u16 regdmn = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
502 if ((regdmn & 0xF0) == CTL_FCC) {
503 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_FCC_2GHZ;
504 ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_FCC_5GHZ;
511 static int ath9k_hw_attach_ops(struct ath_hw *ah)
513 if (!AR_SREV_9300_20_OR_LATER(ah))
514 return ar9002_hw_attach_ops(ah);
516 ar9003_hw_attach_ops(ah);
520 /* Called for all hardware families */
521 static int __ath9k_hw_init(struct ath_hw *ah)
523 struct ath_common *common = ath9k_hw_common(ah);
526 ath9k_hw_read_revisions(ah);
529 * Read back AR_WA into a permanent copy and set bits 14 and 17.
530 * We need to do this to avoid RMW of this register. We cannot
531 * read the reg when chip is asleep.
533 if (AR_SREV_9300_20_OR_LATER(ah)) {
534 ah->WARegVal = REG_READ(ah, AR_WA);
535 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
536 AR_WA_ASPM_TIMER_BASED_DISABLE);
539 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
540 ath_err(common, "Couldn't reset chip\n");
544 if (AR_SREV_9565(ah)) {
545 ah->WARegVal |= AR_WA_BIT22;
546 REG_WRITE(ah, AR_WA, ah->WARegVal);
549 ath9k_hw_init_defaults(ah);
550 ath9k_hw_init_config(ah);
552 r = ath9k_hw_attach_ops(ah);
556 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
557 ath_err(common, "Couldn't wakeup chip\n");
561 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
562 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
563 ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
564 !ah->is_pciexpress)) {
565 ah->config.serialize_regmode =
568 ah->config.serialize_regmode =
573 ath_dbg(common, RESET, "serialize_regmode is %d\n",
574 ah->config.serialize_regmode);
576 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
577 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
579 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
581 switch (ah->hw_version.macVersion) {
582 case AR_SREV_VERSION_5416_PCI:
583 case AR_SREV_VERSION_5416_PCIE:
584 case AR_SREV_VERSION_9160:
585 case AR_SREV_VERSION_9100:
586 case AR_SREV_VERSION_9280:
587 case AR_SREV_VERSION_9285:
588 case AR_SREV_VERSION_9287:
589 case AR_SREV_VERSION_9271:
590 case AR_SREV_VERSION_9300:
591 case AR_SREV_VERSION_9330:
592 case AR_SREV_VERSION_9485:
593 case AR_SREV_VERSION_9340:
594 case AR_SREV_VERSION_9462:
595 case AR_SREV_VERSION_9550:
596 case AR_SREV_VERSION_9565:
600 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
601 ah->hw_version.macVersion, ah->hw_version.macRev);
605 if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
606 AR_SREV_9330(ah) || AR_SREV_9550(ah))
607 ah->is_pciexpress = false;
609 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
610 ath9k_hw_init_cal_settings(ah);
612 ah->ani_function = ATH9K_ANI_ALL;
613 if (!AR_SREV_9300_20_OR_LATER(ah))
614 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
616 if (!ah->is_pciexpress)
617 ath9k_hw_disablepcie(ah);
619 r = ath9k_hw_post_init(ah);
623 ath9k_hw_init_mode_gain_regs(ah);
624 r = ath9k_hw_fill_cap_info(ah);
628 r = ath9k_hw_init_macaddr(ah);
630 ath_err(common, "Failed to initialize MAC address\n");
634 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
635 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
637 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
639 if (AR_SREV_9330(ah))
640 ah->bb_watchdog_timeout_ms = 85;
642 ah->bb_watchdog_timeout_ms = 25;
644 common->state = ATH_HW_INITIALIZED;
649 int ath9k_hw_init(struct ath_hw *ah)
652 struct ath_common *common = ath9k_hw_common(ah);
654 /* These are all the AR5008/AR9001/AR9002/AR9003 hardware family of chipsets */
655 switch (ah->hw_version.devid) {
656 case AR5416_DEVID_PCI:
657 case AR5416_DEVID_PCIE:
658 case AR5416_AR9100_DEVID:
659 case AR9160_DEVID_PCI:
660 case AR9280_DEVID_PCI:
661 case AR9280_DEVID_PCIE:
662 case AR9285_DEVID_PCIE:
663 case AR9287_DEVID_PCI:
664 case AR9287_DEVID_PCIE:
665 case AR2427_DEVID_PCIE:
666 case AR9300_DEVID_PCIE:
667 case AR9300_DEVID_AR9485_PCIE:
668 case AR9300_DEVID_AR9330:
669 case AR9300_DEVID_AR9340:
670 case AR9300_DEVID_QCA955X:
671 case AR9300_DEVID_AR9580:
672 case AR9300_DEVID_AR9462:
673 case AR9485_DEVID_AR1111:
674 case AR9300_DEVID_AR9565:
677 if (common->bus_ops->ath_bus_type == ATH_USB)
679 ath_err(common, "Hardware device ID 0x%04x not supported\n",
680 ah->hw_version.devid);
684 ret = __ath9k_hw_init(ah);
687 "Unable to initialize hardware; initialization status: %d\n",
694 EXPORT_SYMBOL(ath9k_hw_init);
696 static void ath9k_hw_init_qos(struct ath_hw *ah)
698 ENABLE_REGWRITE_BUFFER(ah);
700 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
701 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
703 REG_WRITE(ah, AR_QOS_NO_ACK,
704 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
705 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
706 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
708 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
709 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
710 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
711 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
712 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
714 REGWRITE_BUFFER_FLUSH(ah);
717 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
719 struct ath_common *common = ath9k_hw_common(ah);
722 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
724 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
726 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
730 if (WARN_ON_ONCE(i >= 100)) {
731 ath_err(common, "PLL4 meaurement not done\n");
738 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
740 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
742 static void ath9k_hw_init_pll(struct ath_hw *ah,
743 struct ath9k_channel *chan)
747 if (AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
748 /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
749 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
750 AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
751 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
752 AR_CH0_DPLL2_KD, 0x40);
753 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
754 AR_CH0_DPLL2_KI, 0x4);
756 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
757 AR_CH0_BB_DPLL1_REFDIV, 0x5);
758 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
759 AR_CH0_BB_DPLL1_NINI, 0x58);
760 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
761 AR_CH0_BB_DPLL1_NFRAC, 0x0);
763 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
764 AR_CH0_BB_DPLL2_OUTDIV, 0x1);
765 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
766 AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
767 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
768 AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
770 /* program BB PLL phase_shift to 0x6 */
771 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
772 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
774 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
775 AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
777 } else if (AR_SREV_9330(ah)) {
778 u32 ddr_dpll2, pll_control2, kd;
780 if (ah->is_clk_25mhz) {
781 ddr_dpll2 = 0x18e82f01;
782 pll_control2 = 0xe04a3d;
785 ddr_dpll2 = 0x19e82f01;
786 pll_control2 = 0x886666;
790 /* program DDR PLL ki and kd value */
791 REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
793 /* program DDR PLL phase_shift */
794 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
795 AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
797 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
800 /* program refdiv, nint, frac to RTC register */
801 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
803 /* program BB PLL kd and ki value */
804 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
805 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
807 /* program BB PLL phase_shift */
808 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
809 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
810 } else if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
811 u32 regval, pll2_divint, pll2_divfrac, refdiv;
813 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
816 REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
819 if (ah->is_clk_25mhz) {
821 pll2_divfrac = 0x1eb85;
824 if (AR_SREV_9340(ah)) {
830 pll2_divfrac = 0x26666;
835 regval = REG_READ(ah, AR_PHY_PLL_MODE);
836 regval |= (0x1 << 16);
837 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
840 REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
841 (pll2_divint << 18) | pll2_divfrac);
844 regval = REG_READ(ah, AR_PHY_PLL_MODE);
845 if (AR_SREV_9340(ah))
846 regval = (regval & 0x80071fff) | (0x1 << 30) |
847 (0x1 << 13) | (0x4 << 26) | (0x18 << 19);
849 regval = (regval & 0x80071fff) | (0x3 << 30) |
850 (0x1 << 13) | (0x4 << 26) | (0x60 << 19);
851 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
852 REG_WRITE(ah, AR_PHY_PLL_MODE,
853 REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
857 pll = ath9k_hw_compute_pll_control(ah, chan);
858 if (AR_SREV_9565(ah))
860 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
862 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
866 /* Switch the core clock for ar9271 to 117Mhz */
867 if (AR_SREV_9271(ah)) {
869 REG_WRITE(ah, 0x50040, 0x304);
872 udelay(RTC_PLL_SETTLE_DELAY);
874 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
876 if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
877 if (ah->is_clk_25mhz) {
878 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
879 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
880 REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
882 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
883 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
884 REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
890 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
891 enum nl80211_iftype opmode)
893 u32 sync_default = AR_INTR_SYNC_DEFAULT;
894 u32 imr_reg = AR_IMR_TXERR |
900 if (AR_SREV_9340(ah) || AR_SREV_9550(ah))
901 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
903 if (AR_SREV_9300_20_OR_LATER(ah)) {
904 imr_reg |= AR_IMR_RXOK_HP;
905 if (ah->config.rx_intr_mitigation)
906 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
908 imr_reg |= AR_IMR_RXOK_LP;
911 if (ah->config.rx_intr_mitigation)
912 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
914 imr_reg |= AR_IMR_RXOK;
917 if (ah->config.tx_intr_mitigation)
918 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
920 imr_reg |= AR_IMR_TXOK;
922 ENABLE_REGWRITE_BUFFER(ah);
924 REG_WRITE(ah, AR_IMR, imr_reg);
925 ah->imrs2_reg |= AR_IMR_S2_GTT;
926 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
928 if (!AR_SREV_9100(ah)) {
929 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
930 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
931 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
934 REGWRITE_BUFFER_FLUSH(ah);
936 if (AR_SREV_9300_20_OR_LATER(ah)) {
937 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
938 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
939 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
940 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
944 static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
946 u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
947 val = min(val, (u32) 0xFFFF);
948 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
951 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
953 u32 val = ath9k_hw_mac_to_clks(ah, us);
954 val = min(val, (u32) 0xFFFF);
955 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
958 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
960 u32 val = ath9k_hw_mac_to_clks(ah, us);
961 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
962 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
965 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
967 u32 val = ath9k_hw_mac_to_clks(ah, us);
968 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
969 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
972 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
975 ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
977 ah->globaltxtimeout = (u32) -1;
980 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
981 ah->globaltxtimeout = tu;
986 void ath9k_hw_init_global_settings(struct ath_hw *ah)
988 struct ath_common *common = ath9k_hw_common(ah);
989 const struct ath9k_channel *chan = ah->curchan;
990 int acktimeout, ctstimeout, ack_offset = 0;
993 int rx_lat = 0, tx_lat = 0, eifs = 0;
996 ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
1002 if (ah->misc_mode != 0)
1003 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
1005 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1011 if (IS_CHAN_5GHZ(chan))
1016 if (IS_CHAN_HALF_RATE(chan)) {
1020 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1026 } else if (IS_CHAN_QUARTER_RATE(chan)) {
1028 rx_lat = (rx_lat * 4) - 1;
1030 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1037 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1038 eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
1039 reg = AR_USEC_ASYNC_FIFO;
1041 eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
1043 reg = REG_READ(ah, AR_USEC);
1045 rx_lat = MS(reg, AR_USEC_RX_LAT);
1046 tx_lat = MS(reg, AR_USEC_TX_LAT);
1048 slottime = ah->slottime;
1051 /* As defined by IEEE 802.11-2007 17.3.8.6 */
1052 slottime += 3 * ah->coverage_class;
1053 acktimeout = slottime + sifstime + ack_offset;
1054 ctstimeout = acktimeout;
1057 * Workaround for early ACK timeouts, add an offset to match the
1058 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
1059 * This was initially only meant to work around an issue with delayed
1060 * BA frames in some implementations, but it has been found to fix ACK
1061 * timeout issues in other cases as well.
1063 if (IS_CHAN_2GHZ(chan) &&
1064 !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
1065 acktimeout += 64 - sifstime - ah->slottime;
1066 ctstimeout += 48 - sifstime - ah->slottime;
1069 ath9k_hw_set_sifs_time(ah, sifstime);
1070 ath9k_hw_setslottime(ah, slottime);
1071 ath9k_hw_set_ack_timeout(ah, acktimeout);
1072 ath9k_hw_set_cts_timeout(ah, ctstimeout);
1073 if (ah->globaltxtimeout != (u32) -1)
1074 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
1076 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
1077 REG_RMW(ah, AR_USEC,
1078 (common->clockrate - 1) |
1079 SM(rx_lat, AR_USEC_RX_LAT) |
1080 SM(tx_lat, AR_USEC_TX_LAT),
1081 AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
1084 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
1086 void ath9k_hw_deinit(struct ath_hw *ah)
1088 struct ath_common *common = ath9k_hw_common(ah);
1090 if (common->state < ATH_HW_INITIALIZED)
1093 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1095 EXPORT_SYMBOL(ath9k_hw_deinit);
1101 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
1103 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
1105 if (IS_CHAN_2GHZ(chan))
1113 /****************************************/
1114 /* Reset and Channel Switching Routines */
1115 /****************************************/
1117 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
1119 struct ath_common *common = ath9k_hw_common(ah);
1122 ENABLE_REGWRITE_BUFFER(ah);
1125 * set AHB_MODE not to do cacheline prefetches
1127 if (!AR_SREV_9300_20_OR_LATER(ah))
1128 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
1131 * let mac dma reads be in 128 byte chunks
1133 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
1135 REGWRITE_BUFFER_FLUSH(ah);
1138 * Restore TX Trigger Level to its pre-reset value.
1139 * The initial value depends on whether aggregation is enabled, and is
1140 * adjusted whenever underruns are detected.
1142 if (!AR_SREV_9300_20_OR_LATER(ah))
1143 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
1145 ENABLE_REGWRITE_BUFFER(ah);
1148 * let mac dma writes be in 128 byte chunks
1150 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
1153 * Setup receive FIFO threshold to hold off TX activities
1155 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
1157 if (AR_SREV_9300_20_OR_LATER(ah)) {
1158 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
1159 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
1161 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
1162 ah->caps.rx_status_len);
1166 * reduce the number of usable entries in PCU TXBUF to avoid
1167 * wrap around issues.
1169 if (AR_SREV_9285(ah)) {
1170 /* For AR9285 the number of Fifos are reduced to half.
1171 * So set the usable tx buf size also to half to
1172 * avoid data/delimiter underruns
1174 txbuf_size = AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE;
1175 } else if (AR_SREV_9340_13_OR_LATER(ah)) {
1176 /* Uses fewer entries for AR934x v1.3+ to prevent rx overruns */
1177 txbuf_size = AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE;
1179 txbuf_size = AR_PCU_TXBUF_CTRL_USABLE_SIZE;
1182 if (!AR_SREV_9271(ah))
1183 REG_WRITE(ah, AR_PCU_TXBUF_CTRL, txbuf_size);
1185 REGWRITE_BUFFER_FLUSH(ah);
1187 if (AR_SREV_9300_20_OR_LATER(ah))
1188 ath9k_hw_reset_txstatus_ring(ah);
1191 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
1193 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
1194 u32 set = AR_STA_ID1_KSRCH_MODE;
1197 case NL80211_IFTYPE_ADHOC:
1198 set |= AR_STA_ID1_ADHOC;
1199 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1201 case NL80211_IFTYPE_MESH_POINT:
1202 case NL80211_IFTYPE_AP:
1203 set |= AR_STA_ID1_STA_AP;
1205 case NL80211_IFTYPE_STATION:
1206 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1209 if (!ah->is_monitoring)
1213 REG_RMW(ah, AR_STA_ID1, set, mask);
1216 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1217 u32 *coef_mantissa, u32 *coef_exponent)
1219 u32 coef_exp, coef_man;
1221 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1222 if ((coef_scaled >> coef_exp) & 0x1)
1225 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1227 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1229 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1230 *coef_exponent = coef_exp - 16;
1234 * call external reset function to reset WMAC if:
1235 * - doing a cold reset
1236 * - we have pending frames in the TX queues.
1238 static bool ath9k_hw_ar9330_reset_war(struct ath_hw *ah, int type)
1242 for (i = 0; i < AR_NUM_QCU; i++) {
1243 npend = ath9k_hw_numtxpending(ah, i);
1248 if (ah->external_reset &&
1249 (npend || type == ATH9K_RESET_COLD)) {
1252 ath_dbg(ath9k_hw_common(ah), RESET,
1253 "reset MAC via external reset\n");
1255 reset_err = ah->external_reset();
1257 ath_err(ath9k_hw_common(ah),
1258 "External reset failed, err=%d\n",
1263 REG_WRITE(ah, AR_RTC_RESET, 1);
1269 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1274 if (AR_SREV_9100(ah)) {
1275 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1276 AR_RTC_DERIVED_CLK_PERIOD, 1);
1277 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1280 ENABLE_REGWRITE_BUFFER(ah);
1282 if (AR_SREV_9300_20_OR_LATER(ah)) {
1283 REG_WRITE(ah, AR_WA, ah->WARegVal);
1287 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1288 AR_RTC_FORCE_WAKE_ON_INT);
1290 if (AR_SREV_9100(ah)) {
1291 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1292 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1294 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1295 if (AR_SREV_9340(ah))
1296 tmpReg &= AR9340_INTR_SYNC_LOCAL_TIMEOUT;
1298 tmpReg &= AR_INTR_SYNC_LOCAL_TIMEOUT |
1299 AR_INTR_SYNC_RADM_CPL_TIMEOUT;
1303 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1306 if (!AR_SREV_9300_20_OR_LATER(ah))
1308 REG_WRITE(ah, AR_RC, val);
1310 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1311 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1313 rst_flags = AR_RTC_RC_MAC_WARM;
1314 if (type == ATH9K_RESET_COLD)
1315 rst_flags |= AR_RTC_RC_MAC_COLD;
1318 if (AR_SREV_9330(ah)) {
1319 if (!ath9k_hw_ar9330_reset_war(ah, type))
1323 if (ath9k_hw_mci_is_enabled(ah))
1324 ar9003_mci_check_gpm_offset(ah);
1326 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1328 REGWRITE_BUFFER_FLUSH(ah);
1330 if (AR_SREV_9300_20_OR_LATER(ah))
1332 else if (AR_SREV_9100(ah))
1337 REG_WRITE(ah, AR_RTC_RC, 0);
1338 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1339 ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
1343 if (!AR_SREV_9100(ah))
1344 REG_WRITE(ah, AR_RC, 0);
1346 if (AR_SREV_9100(ah))
1352 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1354 ENABLE_REGWRITE_BUFFER(ah);
1356 if (AR_SREV_9300_20_OR_LATER(ah)) {
1357 REG_WRITE(ah, AR_WA, ah->WARegVal);
1361 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1362 AR_RTC_FORCE_WAKE_ON_INT);
1364 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1365 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1367 REG_WRITE(ah, AR_RTC_RESET, 0);
1369 REGWRITE_BUFFER_FLUSH(ah);
1373 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1374 REG_WRITE(ah, AR_RC, 0);
1376 REG_WRITE(ah, AR_RTC_RESET, 1);
1378 if (!ath9k_hw_wait(ah,
1383 ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
1387 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1390 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1394 if (AR_SREV_9300_20_OR_LATER(ah)) {
1395 REG_WRITE(ah, AR_WA, ah->WARegVal);
1399 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1400 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1402 if (!ah->reset_power_on)
1403 type = ATH9K_RESET_POWER_ON;
1406 case ATH9K_RESET_POWER_ON:
1407 ret = ath9k_hw_set_reset_power_on(ah);
1409 ah->reset_power_on = true;
1411 case ATH9K_RESET_WARM:
1412 case ATH9K_RESET_COLD:
1413 ret = ath9k_hw_set_reset(ah, type);
1422 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1423 struct ath9k_channel *chan)
1425 int reset_type = ATH9K_RESET_WARM;
1427 if (AR_SREV_9280(ah)) {
1428 if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1429 reset_type = ATH9K_RESET_POWER_ON;
1431 reset_type = ATH9K_RESET_COLD;
1432 } else if (ah->chip_fullsleep || REG_READ(ah, AR_Q_TXE) ||
1433 (REG_READ(ah, AR_CR) & AR_CR_RXE))
1434 reset_type = ATH9K_RESET_COLD;
1436 if (!ath9k_hw_set_reset_reg(ah, reset_type))
1439 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1442 ah->chip_fullsleep = false;
1444 if (AR_SREV_9330(ah))
1445 ar9003_hw_internal_regulator_apply(ah);
1446 ath9k_hw_init_pll(ah, chan);
1451 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1452 struct ath9k_channel *chan)
1454 struct ath_common *common = ath9k_hw_common(ah);
1455 struct ath9k_hw_capabilities *pCap = &ah->caps;
1456 bool band_switch = false, mode_diff = false;
1457 u8 ini_reloaded = 0;
1461 if (pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) {
1462 u32 flags_diff = chan->channelFlags ^ ah->curchan->channelFlags;
1463 band_switch = !!(flags_diff & CHANNEL_5GHZ);
1464 mode_diff = !!(flags_diff & ~CHANNEL_HT);
1467 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1468 if (ath9k_hw_numtxpending(ah, qnum)) {
1469 ath_dbg(common, QUEUE,
1470 "Transmit frames pending on queue %d\n", qnum);
1475 if (!ath9k_hw_rfbus_req(ah)) {
1476 ath_err(common, "Could not kill baseband RX\n");
1480 if (band_switch || mode_diff) {
1481 ath9k_hw_mark_phy_inactive(ah);
1485 ath9k_hw_init_pll(ah, chan);
1487 if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
1488 ath_err(common, "Failed to do fast channel change\n");
1493 ath9k_hw_set_channel_regs(ah, chan);
1495 r = ath9k_hw_rf_set_freq(ah, chan);
1497 ath_err(common, "Failed to set channel\n");
1500 ath9k_hw_set_clockrate(ah);
1501 ath9k_hw_apply_txpower(ah, chan, false);
1503 ath9k_hw_set_delta_slope(ah, chan);
1504 ath9k_hw_spur_mitigate_freq(ah, chan);
1506 if (band_switch || ini_reloaded)
1507 ah->eep_ops->set_board_values(ah, chan);
1509 ath9k_hw_init_bb(ah, chan);
1510 ath9k_hw_rfbus_done(ah);
1512 if (band_switch || ini_reloaded) {
1513 ah->ah_flags |= AH_FASTCC;
1514 ath9k_hw_init_cal(ah, chan);
1515 ah->ah_flags &= ~AH_FASTCC;
1521 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1523 u32 gpio_mask = ah->gpio_mask;
1526 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1527 if (!(gpio_mask & 1))
1530 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1531 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1535 static bool ath9k_hw_check_dcs(u32 dma_dbg, u32 num_dcu_states,
1536 int *hang_state, int *hang_pos)
1538 static u32 dcu_chain_state[] = {5, 6, 9}; /* DCU chain stuck states */
1539 u32 chain_state, dcs_pos, i;
1541 for (dcs_pos = 0; dcs_pos < num_dcu_states; dcs_pos++) {
1542 chain_state = (dma_dbg >> (5 * dcs_pos)) & 0x1f;
1543 for (i = 0; i < 3; i++) {
1544 if (chain_state == dcu_chain_state[i]) {
1545 *hang_state = chain_state;
1546 *hang_pos = dcs_pos;
1554 #define DCU_COMPLETE_STATE 1
1555 #define DCU_COMPLETE_STATE_MASK 0x3
1556 #define NUM_STATUS_READS 50
1557 static bool ath9k_hw_detect_mac_hang(struct ath_hw *ah)
1559 u32 chain_state, comp_state, dcs_reg = AR_DMADBG_4;
1560 u32 i, hang_pos, hang_state, num_state = 6;
1562 comp_state = REG_READ(ah, AR_DMADBG_6);
1564 if ((comp_state & DCU_COMPLETE_STATE_MASK) != DCU_COMPLETE_STATE) {
1565 ath_dbg(ath9k_hw_common(ah), RESET,
1566 "MAC Hang signature not found at DCU complete\n");
1570 chain_state = REG_READ(ah, dcs_reg);
1571 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1572 goto hang_check_iter;
1574 dcs_reg = AR_DMADBG_5;
1576 chain_state = REG_READ(ah, dcs_reg);
1577 if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
1578 goto hang_check_iter;
1580 ath_dbg(ath9k_hw_common(ah), RESET,
1581 "MAC Hang signature 1 not found\n");
1585 ath_dbg(ath9k_hw_common(ah), RESET,
1586 "DCU registers: chain %08x complete %08x Hang: state %d pos %d\n",
1587 chain_state, comp_state, hang_state, hang_pos);
1589 for (i = 0; i < NUM_STATUS_READS; i++) {
1590 chain_state = REG_READ(ah, dcs_reg);
1591 chain_state = (chain_state >> (5 * hang_pos)) & 0x1f;
1592 comp_state = REG_READ(ah, AR_DMADBG_6);
1594 if (((comp_state & DCU_COMPLETE_STATE_MASK) !=
1595 DCU_COMPLETE_STATE) ||
1596 (chain_state != hang_state))
1600 ath_dbg(ath9k_hw_common(ah), RESET, "MAC Hang signature 1 found\n");
1605 void ath9k_hw_check_nav(struct ath_hw *ah)
1607 struct ath_common *common = ath9k_hw_common(ah);
1610 val = REG_READ(ah, AR_NAV);
1611 if (val != 0xdeadbeef && val > 0x7fff) {
1612 ath_dbg(common, BSTUCK, "Abnormal NAV: 0x%x\n", val);
1613 REG_WRITE(ah, AR_NAV, 0);
1616 EXPORT_SYMBOL(ath9k_hw_check_nav);
1618 bool ath9k_hw_check_alive(struct ath_hw *ah)
1623 if (AR_SREV_9300(ah))
1624 return !ath9k_hw_detect_mac_hang(ah);
1626 if (AR_SREV_9285_12_OR_LATER(ah))
1630 reg = REG_READ(ah, AR_OBS_BUS_1);
1632 if ((reg & 0x7E7FFFEF) == 0x00702400)
1635 switch (reg & 0x7E000B00) {
1643 } while (count-- > 0);
1647 EXPORT_SYMBOL(ath9k_hw_check_alive);
1649 static void ath9k_hw_init_mfp(struct ath_hw *ah)
1651 /* Setup MFP options for CCMP */
1652 if (AR_SREV_9280_20_OR_LATER(ah)) {
1653 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1654 * frames when constructing CCMP AAD. */
1655 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1657 ah->sw_mgmt_crypto = false;
1658 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1659 /* Disable hardware crypto for management frames */
1660 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1661 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1662 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1663 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1664 ah->sw_mgmt_crypto = true;
1666 ah->sw_mgmt_crypto = true;
1670 static void ath9k_hw_reset_opmode(struct ath_hw *ah,
1671 u32 macStaId1, u32 saveDefAntenna)
1673 struct ath_common *common = ath9k_hw_common(ah);
1675 ENABLE_REGWRITE_BUFFER(ah);
1677 REG_RMW(ah, AR_STA_ID1, macStaId1
1678 | AR_STA_ID1_RTS_USE_DEF
1679 | (ah->config.ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1680 | ah->sta_id1_defaults,
1681 ~AR_STA_ID1_SADH_MASK);
1682 ath_hw_setbssidmask(common);
1683 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1684 ath9k_hw_write_associd(ah);
1685 REG_WRITE(ah, AR_ISR, ~0);
1686 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1688 REGWRITE_BUFFER_FLUSH(ah);
1690 ath9k_hw_set_operating_mode(ah, ah->opmode);
1693 static void ath9k_hw_init_queues(struct ath_hw *ah)
1697 ENABLE_REGWRITE_BUFFER(ah);
1699 for (i = 0; i < AR_NUM_DCU; i++)
1700 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1702 REGWRITE_BUFFER_FLUSH(ah);
1705 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1706 ath9k_hw_resettxqueue(ah, i);
1710 * For big endian systems turn on swapping for descriptors
1712 static void ath9k_hw_init_desc(struct ath_hw *ah)
1714 struct ath_common *common = ath9k_hw_common(ah);
1716 if (AR_SREV_9100(ah)) {
1718 mask = REG_READ(ah, AR_CFG);
1719 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1720 ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
1723 mask = INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1724 REG_WRITE(ah, AR_CFG, mask);
1725 ath_dbg(common, RESET, "Setting CFG 0x%x\n",
1726 REG_READ(ah, AR_CFG));
1729 if (common->bus_ops->ath_bus_type == ATH_USB) {
1730 /* Configure AR9271 target WLAN */
1731 if (AR_SREV_9271(ah))
1732 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1734 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1737 else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
1739 REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
1741 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1747 * Fast channel change:
1748 * (Change synthesizer based on channel freq without resetting chip)
1750 static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
1752 struct ath_common *common = ath9k_hw_common(ah);
1753 struct ath9k_hw_capabilities *pCap = &ah->caps;
1756 if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
1759 if (ah->chip_fullsleep)
1765 if (chan->channel == ah->curchan->channel)
1768 if ((ah->curchan->channelFlags | chan->channelFlags) &
1769 (CHANNEL_HALF | CHANNEL_QUARTER))
1773 * If cross-band fcc is not supoprted, bail out if channelFlags differ.
1775 if (!(pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) &&
1776 ((chan->channelFlags ^ ah->curchan->channelFlags) & ~CHANNEL_HT))
1779 if (!ath9k_hw_check_alive(ah))
1783 * For AR9462, make sure that calibration data for
1784 * re-using are present.
1786 if (AR_SREV_9462(ah) && (ah->caldata &&
1787 (!test_bit(TXIQCAL_DONE, &ah->caldata->cal_flags) ||
1788 !test_bit(TXCLCAL_DONE, &ah->caldata->cal_flags) ||
1789 !test_bit(RTT_DONE, &ah->caldata->cal_flags))))
1792 ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
1793 ah->curchan->channel, chan->channel);
1795 ret = ath9k_hw_channel_change(ah, chan);
1799 if (ath9k_hw_mci_is_enabled(ah))
1800 ar9003_mci_2g5g_switch(ah, false);
1802 ath9k_hw_loadnf(ah, ah->curchan);
1803 ath9k_hw_start_nfcal(ah, true);
1805 if (AR_SREV_9271(ah))
1806 ar9002_hw_load_ani_reg(ah, chan);
1813 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1814 struct ath9k_hw_cal_data *caldata, bool fastcc)
1816 struct ath_common *common = ath9k_hw_common(ah);
1824 bool start_mci_reset = false;
1825 bool save_fullsleep = ah->chip_fullsleep;
1827 if (ath9k_hw_mci_is_enabled(ah)) {
1828 start_mci_reset = ar9003_mci_start_reset(ah, chan);
1829 if (start_mci_reset)
1833 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1836 if (ah->curchan && !ah->chip_fullsleep)
1837 ath9k_hw_getnf(ah, ah->curchan);
1839 ah->caldata = caldata;
1840 if (caldata && (chan->channel != caldata->channel ||
1841 chan->channelFlags != caldata->channelFlags)) {
1842 /* Operating channel changed, reset channel calibration data */
1843 memset(caldata, 0, sizeof(*caldata));
1844 ath9k_init_nfcal_hist_buffer(ah, chan);
1845 } else if (caldata) {
1846 clear_bit(PAPRD_PACKET_SENT, &caldata->cal_flags);
1848 ah->noise = ath9k_hw_getchan_noise(ah, chan, chan->noisefloor);
1851 r = ath9k_hw_do_fastcc(ah, chan);
1856 if (ath9k_hw_mci_is_enabled(ah))
1857 ar9003_mci_stop_bt(ah, save_fullsleep);
1859 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1860 if (saveDefAntenna == 0)
1863 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1865 /* Save TSF before chip reset, a cold reset clears it */
1866 tsf = ath9k_hw_gettsf64(ah);
1867 getrawmonotonic(&ts);
1868 usec = ts.tv_sec * 1000 + ts.tv_nsec / 1000;
1870 saveLedState = REG_READ(ah, AR_CFG_LED) &
1871 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1872 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1874 ath9k_hw_mark_phy_inactive(ah);
1876 ah->paprd_table_write_done = false;
1878 /* Only required on the first reset */
1879 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1881 AR9271_RESET_POWER_DOWN_CONTROL,
1882 AR9271_RADIO_RF_RST);
1886 if (!ath9k_hw_chip_reset(ah, chan)) {
1887 ath_err(common, "Chip reset failed\n");
1891 /* Only required on the first reset */
1892 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1893 ah->htc_reset_init = false;
1895 AR9271_RESET_POWER_DOWN_CONTROL,
1896 AR9271_GATE_MAC_CTL);
1901 getrawmonotonic(&ts);
1902 usec = ts.tv_sec * 1000 + ts.tv_nsec / 1000 - usec;
1903 ath9k_hw_settsf64(ah, tsf + usec);
1905 if (AR_SREV_9280_20_OR_LATER(ah))
1906 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1908 if (!AR_SREV_9300_20_OR_LATER(ah))
1909 ar9002_hw_enable_async_fifo(ah);
1911 r = ath9k_hw_process_ini(ah, chan);
1915 ath9k_hw_set_rfmode(ah, chan);
1917 if (ath9k_hw_mci_is_enabled(ah))
1918 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
1921 * Some AR91xx SoC devices frequently fail to accept TSF writes
1922 * right after the chip reset. When that happens, write a new
1923 * value after the initvals have been applied, with an offset
1924 * based on measured time difference
1926 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1928 ath9k_hw_settsf64(ah, tsf);
1931 ath9k_hw_init_mfp(ah);
1933 ath9k_hw_set_delta_slope(ah, chan);
1934 ath9k_hw_spur_mitigate_freq(ah, chan);
1935 ah->eep_ops->set_board_values(ah, chan);
1937 ath9k_hw_reset_opmode(ah, macStaId1, saveDefAntenna);
1939 r = ath9k_hw_rf_set_freq(ah, chan);
1943 ath9k_hw_set_clockrate(ah);
1945 ath9k_hw_init_queues(ah);
1946 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1947 ath9k_hw_ani_cache_ini_regs(ah);
1948 ath9k_hw_init_qos(ah);
1950 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1951 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1953 ath9k_hw_init_global_settings(ah);
1955 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1956 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1957 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1958 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1959 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1960 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1961 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1964 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1966 ath9k_hw_set_dma(ah);
1968 if (!ath9k_hw_mci_is_enabled(ah))
1969 REG_WRITE(ah, AR_OBS, 8);
1971 if (ah->config.rx_intr_mitigation) {
1972 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1973 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1976 if (ah->config.tx_intr_mitigation) {
1977 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1978 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1981 ath9k_hw_init_bb(ah, chan);
1984 clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
1985 clear_bit(TXCLCAL_DONE, &caldata->cal_flags);
1987 if (!ath9k_hw_init_cal(ah, chan))
1990 if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
1993 ENABLE_REGWRITE_BUFFER(ah);
1995 ath9k_hw_restore_chainmask(ah);
1996 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1998 REGWRITE_BUFFER_FLUSH(ah);
2000 ath9k_hw_init_desc(ah);
2002 if (ath9k_hw_btcoex_is_enabled(ah))
2003 ath9k_hw_btcoex_enable(ah);
2005 if (ath9k_hw_mci_is_enabled(ah))
2006 ar9003_mci_check_bt(ah);
2008 ath9k_hw_loadnf(ah, chan);
2009 ath9k_hw_start_nfcal(ah, true);
2011 if (AR_SREV_9300_20_OR_LATER(ah)) {
2012 ar9003_hw_bb_watchdog_config(ah);
2013 ar9003_hw_disable_phy_restart(ah);
2016 ath9k_hw_apply_gpio_override(ah);
2018 if (AR_SREV_9565(ah) && common->bt_ant_diversity)
2019 REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
2023 EXPORT_SYMBOL(ath9k_hw_reset);
2025 /******************************/
2026 /* Power Management (Chipset) */
2027 /******************************/
2030 * Notify Power Mgt is disabled in self-generated frames.
2031 * If requested, force chip to sleep.
2033 static void ath9k_set_power_sleep(struct ath_hw *ah)
2035 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2037 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
2038 REG_CLR_BIT(ah, AR_TIMER_MODE, 0xff);
2039 REG_CLR_BIT(ah, AR_NDP2_TIMER_MODE, 0xff);
2040 REG_CLR_BIT(ah, AR_SLP32_INC, 0xfffff);
2041 /* xxx Required for WLAN only case ? */
2042 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
2047 * Clear the RTC force wake bit to allow the
2048 * mac to go to sleep.
2050 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2052 if (ath9k_hw_mci_is_enabled(ah))
2055 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
2056 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
2058 /* Shutdown chip. Active low */
2059 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
2060 REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
2064 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
2065 if (AR_SREV_9300_20_OR_LATER(ah))
2066 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2070 * Notify Power Management is enabled in self-generating
2071 * frames. If request, set power mode of chip to
2072 * auto/normal. Duration in units of 128us (1/8 TU).
2074 static void ath9k_set_power_network_sleep(struct ath_hw *ah)
2076 struct ath9k_hw_capabilities *pCap = &ah->caps;
2078 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2080 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
2081 /* Set WakeOnInterrupt bit; clear ForceWake bit */
2082 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
2083 AR_RTC_FORCE_WAKE_ON_INT);
2086 /* When chip goes into network sleep, it could be waken
2087 * up by MCI_INT interrupt caused by BT's HW messages
2088 * (LNA_xxx, CONT_xxx) which chould be in a very fast
2089 * rate (~100us). This will cause chip to leave and
2090 * re-enter network sleep mode frequently, which in
2091 * consequence will have WLAN MCI HW to generate lots of
2092 * SYS_WAKING and SYS_SLEEPING messages which will make
2093 * BT CPU to busy to process.
2095 if (ath9k_hw_mci_is_enabled(ah))
2096 REG_CLR_BIT(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
2097 AR_MCI_INTERRUPT_RX_HW_MSG_MASK);
2099 * Clear the RTC force wake bit to allow the
2100 * mac to go to sleep.
2102 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2104 if (ath9k_hw_mci_is_enabled(ah))
2108 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
2109 if (AR_SREV_9300_20_OR_LATER(ah))
2110 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2113 static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
2118 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
2119 if (AR_SREV_9300_20_OR_LATER(ah)) {
2120 REG_WRITE(ah, AR_WA, ah->WARegVal);
2124 if ((REG_READ(ah, AR_RTC_STATUS) &
2125 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
2126 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
2129 if (!AR_SREV_9300_20_OR_LATER(ah))
2130 ath9k_hw_init_pll(ah, NULL);
2132 if (AR_SREV_9100(ah))
2133 REG_SET_BIT(ah, AR_RTC_RESET,
2136 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2137 AR_RTC_FORCE_WAKE_EN);
2140 for (i = POWER_UP_TIME / 50; i > 0; i--) {
2141 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
2142 if (val == AR_RTC_STATUS_ON)
2145 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2146 AR_RTC_FORCE_WAKE_EN);
2149 ath_err(ath9k_hw_common(ah),
2150 "Failed to wakeup in %uus\n",
2151 POWER_UP_TIME / 20);
2155 if (ath9k_hw_mci_is_enabled(ah))
2156 ar9003_mci_set_power_awake(ah);
2158 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2163 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
2165 struct ath_common *common = ath9k_hw_common(ah);
2167 static const char *modes[] = {
2174 if (ah->power_mode == mode)
2177 ath_dbg(common, RESET, "%s -> %s\n",
2178 modes[ah->power_mode], modes[mode]);
2181 case ATH9K_PM_AWAKE:
2182 status = ath9k_hw_set_power_awake(ah);
2184 case ATH9K_PM_FULL_SLEEP:
2185 if (ath9k_hw_mci_is_enabled(ah))
2186 ar9003_mci_set_full_sleep(ah);
2188 ath9k_set_power_sleep(ah);
2189 ah->chip_fullsleep = true;
2191 case ATH9K_PM_NETWORK_SLEEP:
2192 ath9k_set_power_network_sleep(ah);
2195 ath_err(common, "Unknown power mode %u\n", mode);
2198 ah->power_mode = mode;
2201 * XXX: If this warning never comes up after a while then
2202 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
2203 * ath9k_hw_setpower() return type void.
2206 if (!(ah->ah_flags & AH_UNPLUGGED))
2207 ATH_DBG_WARN_ON_ONCE(!status);
2211 EXPORT_SYMBOL(ath9k_hw_setpower);
2213 /*******************/
2214 /* Beacon Handling */
2215 /*******************/
2217 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2221 ENABLE_REGWRITE_BUFFER(ah);
2223 switch (ah->opmode) {
2224 case NL80211_IFTYPE_ADHOC:
2225 REG_SET_BIT(ah, AR_TXCFG,
2226 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2227 case NL80211_IFTYPE_MESH_POINT:
2228 case NL80211_IFTYPE_AP:
2229 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
2230 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
2231 TU_TO_USEC(ah->config.dma_beacon_response_time));
2232 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
2233 TU_TO_USEC(ah->config.sw_beacon_response_time));
2235 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2238 ath_dbg(ath9k_hw_common(ah), BEACON,
2239 "%s: unsupported opmode: %d\n", __func__, ah->opmode);
2244 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
2245 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
2246 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
2248 REGWRITE_BUFFER_FLUSH(ah);
2250 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2252 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2254 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2255 const struct ath9k_beacon_state *bs)
2257 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2258 struct ath9k_hw_capabilities *pCap = &ah->caps;
2259 struct ath_common *common = ath9k_hw_common(ah);
2261 ENABLE_REGWRITE_BUFFER(ah);
2263 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, bs->bs_nexttbtt);
2264 REG_WRITE(ah, AR_BEACON_PERIOD, bs->bs_intval);
2265 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, bs->bs_intval);
2267 REGWRITE_BUFFER_FLUSH(ah);
2269 REG_RMW_FIELD(ah, AR_RSSI_THR,
2270 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2272 beaconintval = bs->bs_intval;
2274 if (bs->bs_sleepduration > beaconintval)
2275 beaconintval = bs->bs_sleepduration;
2277 dtimperiod = bs->bs_dtimperiod;
2278 if (bs->bs_sleepduration > dtimperiod)
2279 dtimperiod = bs->bs_sleepduration;
2281 if (beaconintval == dtimperiod)
2282 nextTbtt = bs->bs_nextdtim;
2284 nextTbtt = bs->bs_nexttbtt;
2286 ath_dbg(common, BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2287 ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
2288 ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
2289 ath_dbg(common, BEACON, "DTIM period %d\n", dtimperiod);
2291 ENABLE_REGWRITE_BUFFER(ah);
2293 REG_WRITE(ah, AR_NEXT_DTIM, bs->bs_nextdtim - SLEEP_SLOP);
2294 REG_WRITE(ah, AR_NEXT_TIM, nextTbtt - SLEEP_SLOP);
2296 REG_WRITE(ah, AR_SLEEP1,
2297 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2298 | AR_SLEEP1_ASSUME_DTIM);
2300 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2301 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2303 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2305 REG_WRITE(ah, AR_SLEEP2,
2306 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2308 REG_WRITE(ah, AR_TIM_PERIOD, beaconintval);
2309 REG_WRITE(ah, AR_DTIM_PERIOD, dtimperiod);
2311 REGWRITE_BUFFER_FLUSH(ah);
2313 REG_SET_BIT(ah, AR_TIMER_MODE,
2314 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2317 /* TSF Out of Range Threshold */
2318 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2320 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2322 /*******************/
2323 /* HW Capabilities */
2324 /*******************/
2326 static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
2328 eeprom_chainmask &= chip_chainmask;
2329 if (eeprom_chainmask)
2330 return eeprom_chainmask;
2332 return chip_chainmask;
2336 * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
2337 * @ah: the atheros hardware data structure
2339 * We enable DFS support upstream on chipsets which have passed a series
2340 * of tests. The testing requirements are going to be documented. Desired
2341 * test requirements are documented at:
2343 * http://wireless.kernel.org/en/users/Drivers/ath9k/dfs
2345 * Once a new chipset gets properly tested an individual commit can be used
2346 * to document the testing for DFS for that chipset.
2348 static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
2351 switch (ah->hw_version.macVersion) {
2352 /* for temporary testing DFS with 9280 */
2353 case AR_SREV_VERSION_9280:
2354 /* AR9580 will likely be our first target to get testing on */
2355 case AR_SREV_VERSION_9580:
2362 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2364 struct ath9k_hw_capabilities *pCap = &ah->caps;
2365 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2366 struct ath_common *common = ath9k_hw_common(ah);
2367 unsigned int chip_chainmask;
2370 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
2372 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2373 regulatory->current_rd = eeval;
2375 if (ah->opmode != NL80211_IFTYPE_AP &&
2376 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2377 if (regulatory->current_rd == 0x64 ||
2378 regulatory->current_rd == 0x65)
2379 regulatory->current_rd += 5;
2380 else if (regulatory->current_rd == 0x41)
2381 regulatory->current_rd = 0x43;
2382 ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
2383 regulatory->current_rd);
2386 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2387 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
2389 "no band has been marked as supported in EEPROM\n");
2393 if (eeval & AR5416_OPFLAGS_11A)
2394 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
2396 if (eeval & AR5416_OPFLAGS_11G)
2397 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
2399 if (AR_SREV_9485(ah) ||
2404 else if (AR_SREV_9462(ah))
2406 else if (!AR_SREV_9280_20_OR_LATER(ah))
2408 else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
2413 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2415 * For AR9271 we will temporarilly uses the rx chainmax as read from
2418 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2419 !(eeval & AR5416_OPFLAGS_11A) &&
2420 !(AR_SREV_9271(ah)))
2421 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2422 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2423 else if (AR_SREV_9100(ah))
2424 pCap->rx_chainmask = 0x7;
2426 /* Use rx_chainmask from EEPROM. */
2427 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2429 pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
2430 pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
2431 ah->txchainmask = pCap->tx_chainmask;
2432 ah->rxchainmask = pCap->rx_chainmask;
2434 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2436 /* enable key search for every frame in an aggregate */
2437 if (AR_SREV_9300_20_OR_LATER(ah))
2438 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
2440 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
2442 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
2443 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2445 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2447 if (AR_SREV_9271(ah))
2448 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2449 else if (AR_DEVID_7010(ah))
2450 pCap->num_gpio_pins = AR7010_NUM_GPIO;
2451 else if (AR_SREV_9300_20_OR_LATER(ah))
2452 pCap->num_gpio_pins = AR9300_NUM_GPIO;
2453 else if (AR_SREV_9287_11_OR_LATER(ah))
2454 pCap->num_gpio_pins = AR9287_NUM_GPIO;
2455 else if (AR_SREV_9285_12_OR_LATER(ah))
2456 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2457 else if (AR_SREV_9280_20_OR_LATER(ah))
2458 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2460 pCap->num_gpio_pins = AR_NUM_GPIO;
2462 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
2463 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2465 pCap->rts_aggr_limit = (8 * 1024);
2467 #ifdef CONFIG_ATH9K_RFKILL
2468 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2469 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2471 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2472 ah->rfkill_polarity =
2473 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2475 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2478 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
2479 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2481 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2483 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2484 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2486 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2488 if (AR_SREV_9300_20_OR_LATER(ah)) {
2489 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
2490 if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah) && !AR_SREV_9565(ah))
2491 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
2493 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2494 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2495 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2496 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2497 pCap->txs_len = sizeof(struct ar9003_txs);
2499 pCap->tx_desc_len = sizeof(struct ath_desc);
2500 if (AR_SREV_9280_20(ah))
2501 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
2504 if (AR_SREV_9300_20_OR_LATER(ah))
2505 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
2507 if (AR_SREV_9300_20_OR_LATER(ah))
2508 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
2510 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
2511 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
2513 if (AR_SREV_9285(ah)) {
2514 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
2516 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2517 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1)) {
2518 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2519 ath_info(common, "Enable LNA combining\n");
2524 if (AR_SREV_9300_20_OR_LATER(ah)) {
2525 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
2526 pCap->hw_caps |= ATH9K_HW_CAP_APM;
2529 if (AR_SREV_9330(ah) || AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
2530 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2531 if ((ant_div_ctl1 >> 0x6) == 0x3) {
2532 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2533 ath_info(common, "Enable LNA combining\n");
2537 if (ath9k_hw_dfs_tested(ah))
2538 pCap->hw_caps |= ATH9K_HW_CAP_DFS;
2540 tx_chainmask = pCap->tx_chainmask;
2541 rx_chainmask = pCap->rx_chainmask;
2542 while (tx_chainmask || rx_chainmask) {
2543 if (tx_chainmask & BIT(0))
2544 pCap->max_txchains++;
2545 if (rx_chainmask & BIT(0))
2546 pCap->max_rxchains++;
2552 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
2553 if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
2554 pCap->hw_caps |= ATH9K_HW_CAP_MCI;
2556 if (AR_SREV_9462_20_OR_LATER(ah))
2557 pCap->hw_caps |= ATH9K_HW_CAP_RTT;
2560 if (AR_SREV_9462(ah))
2561 pCap->hw_caps |= ATH9K_HW_WOW_DEVICE_CAPABLE;
2563 if (AR_SREV_9300_20_OR_LATER(ah) &&
2564 ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
2565 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
2568 * Fast channel change across bands is available
2569 * only for AR9462 and AR9565.
2571 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
2572 pCap->hw_caps |= ATH9K_HW_CAP_FCC_BAND_SWITCH;
2577 /****************************/
2578 /* GPIO / RFKILL / Antennae */
2579 /****************************/
2581 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2585 u32 gpio_shift, tmp;
2588 addr = AR_GPIO_OUTPUT_MUX3;
2590 addr = AR_GPIO_OUTPUT_MUX2;
2592 addr = AR_GPIO_OUTPUT_MUX1;
2594 gpio_shift = (gpio % 6) * 5;
2596 if (AR_SREV_9280_20_OR_LATER(ah)
2597 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2598 REG_RMW(ah, addr, (type << gpio_shift),
2599 (0x1f << gpio_shift));
2601 tmp = REG_READ(ah, addr);
2602 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2603 tmp &= ~(0x1f << gpio_shift);
2604 tmp |= (type << gpio_shift);
2605 REG_WRITE(ah, addr, tmp);
2609 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2613 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2615 if (AR_DEVID_7010(ah)) {
2617 REG_RMW(ah, AR7010_GPIO_OE,
2618 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2619 (AR7010_GPIO_OE_MASK << gpio_shift));
2623 gpio_shift = gpio << 1;
2626 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2627 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2629 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2631 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2633 #define MS_REG_READ(x, y) \
2634 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2636 if (gpio >= ah->caps.num_gpio_pins)
2639 if (AR_DEVID_7010(ah)) {
2641 val = REG_READ(ah, AR7010_GPIO_IN);
2642 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2643 } else if (AR_SREV_9300_20_OR_LATER(ah))
2644 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2645 AR_GPIO_BIT(gpio)) != 0;
2646 else if (AR_SREV_9271(ah))
2647 return MS_REG_READ(AR9271, gpio) != 0;
2648 else if (AR_SREV_9287_11_OR_LATER(ah))
2649 return MS_REG_READ(AR9287, gpio) != 0;
2650 else if (AR_SREV_9285_12_OR_LATER(ah))
2651 return MS_REG_READ(AR9285, gpio) != 0;
2652 else if (AR_SREV_9280_20_OR_LATER(ah))
2653 return MS_REG_READ(AR928X, gpio) != 0;
2655 return MS_REG_READ(AR, gpio) != 0;
2657 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2659 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2664 if (AR_DEVID_7010(ah)) {
2666 REG_RMW(ah, AR7010_GPIO_OE,
2667 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2668 (AR7010_GPIO_OE_MASK << gpio_shift));
2672 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2673 gpio_shift = 2 * gpio;
2676 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2677 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2679 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2681 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2683 if (AR_DEVID_7010(ah)) {
2685 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2690 if (AR_SREV_9271(ah))
2693 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2696 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2698 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2700 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2702 EXPORT_SYMBOL(ath9k_hw_setantenna);
2704 /*********************/
2705 /* General Operation */
2706 /*********************/
2708 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2710 u32 bits = REG_READ(ah, AR_RX_FILTER);
2711 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2713 if (phybits & AR_PHY_ERR_RADAR)
2714 bits |= ATH9K_RX_FILTER_PHYRADAR;
2715 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2716 bits |= ATH9K_RX_FILTER_PHYERR;
2720 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2722 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2726 ENABLE_REGWRITE_BUFFER(ah);
2728 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
2729 bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
2731 REG_WRITE(ah, AR_RX_FILTER, bits);
2734 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2735 phybits |= AR_PHY_ERR_RADAR;
2736 if (bits & ATH9K_RX_FILTER_PHYERR)
2737 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2738 REG_WRITE(ah, AR_PHY_ERR, phybits);
2741 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2743 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2745 REGWRITE_BUFFER_FLUSH(ah);
2747 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2749 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2751 if (ath9k_hw_mci_is_enabled(ah))
2752 ar9003_mci_bt_gain_ctrl(ah);
2754 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2757 ath9k_hw_init_pll(ah, NULL);
2758 ah->htc_reset_init = true;
2761 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2763 bool ath9k_hw_disable(struct ath_hw *ah)
2765 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2768 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2771 ath9k_hw_init_pll(ah, NULL);
2774 EXPORT_SYMBOL(ath9k_hw_disable);
2776 static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
2778 enum eeprom_param gain_param;
2780 if (IS_CHAN_2GHZ(chan))
2781 gain_param = EEP_ANTENNA_GAIN_2G;
2783 gain_param = EEP_ANTENNA_GAIN_5G;
2785 return ah->eep_ops->get_eeprom(ah, gain_param);
2788 void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
2791 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2792 struct ieee80211_channel *channel;
2793 int chan_pwr, new_pwr, max_gain;
2794 int ant_gain, ant_reduction = 0;
2799 channel = chan->chan;
2800 chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
2801 new_pwr = min_t(int, chan_pwr, reg->power_limit);
2802 max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
2804 ant_gain = get_antenna_gain(ah, chan);
2805 if (ant_gain > max_gain)
2806 ant_reduction = ant_gain - max_gain;
2808 ah->eep_ops->set_txpower(ah, chan,
2809 ath9k_regd_get_ctl(reg, chan),
2810 ant_reduction, new_pwr, test);
2813 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2815 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2816 struct ath9k_channel *chan = ah->curchan;
2817 struct ieee80211_channel *channel = chan->chan;
2819 reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
2821 channel->max_power = MAX_RATE_POWER / 2;
2823 ath9k_hw_apply_txpower(ah, chan, test);
2826 channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
2828 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2830 void ath9k_hw_setopmode(struct ath_hw *ah)
2832 ath9k_hw_set_operating_mode(ah, ah->opmode);
2834 EXPORT_SYMBOL(ath9k_hw_setopmode);
2836 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2838 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2839 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2841 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2843 void ath9k_hw_write_associd(struct ath_hw *ah)
2845 struct ath_common *common = ath9k_hw_common(ah);
2847 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2848 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2849 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2851 EXPORT_SYMBOL(ath9k_hw_write_associd);
2853 #define ATH9K_MAX_TSF_READ 10
2855 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2857 u32 tsf_lower, tsf_upper1, tsf_upper2;
2860 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2861 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2862 tsf_lower = REG_READ(ah, AR_TSF_L32);
2863 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2864 if (tsf_upper2 == tsf_upper1)
2866 tsf_upper1 = tsf_upper2;
2869 WARN_ON( i == ATH9K_MAX_TSF_READ );
2871 return (((u64)tsf_upper1 << 32) | tsf_lower);
2873 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2875 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2877 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2878 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2880 EXPORT_SYMBOL(ath9k_hw_settsf64);
2882 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2884 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2885 AH_TSF_WRITE_TIMEOUT))
2886 ath_dbg(ath9k_hw_common(ah), RESET,
2887 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2889 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2891 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2893 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, bool set)
2896 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2898 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2900 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2902 void ath9k_hw_set11nmac2040(struct ath_hw *ah, struct ath9k_channel *chan)
2906 if (IS_CHAN_HT40(chan) && !ah->config.cwm_ignore_extcca)
2907 macmode = AR_2040_JOINED_RX_CLEAR;
2911 REG_WRITE(ah, AR_2040_MODE, macmode);
2914 /* HW Generic timers configuration */
2916 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2918 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2919 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2920 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2921 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2922 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2923 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2924 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2925 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2926 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2927 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2928 AR_NDP2_TIMER_MODE, 0x0002},
2929 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2930 AR_NDP2_TIMER_MODE, 0x0004},
2931 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2932 AR_NDP2_TIMER_MODE, 0x0008},
2933 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2934 AR_NDP2_TIMER_MODE, 0x0010},
2935 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2936 AR_NDP2_TIMER_MODE, 0x0020},
2937 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2938 AR_NDP2_TIMER_MODE, 0x0040},
2939 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2940 AR_NDP2_TIMER_MODE, 0x0080}
2943 /* HW generic timer primitives */
2945 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2947 return REG_READ(ah, AR_TSF_L32);
2949 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2951 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2952 void (*trigger)(void *),
2953 void (*overflow)(void *),
2957 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2958 struct ath_gen_timer *timer;
2960 if ((timer_index < AR_FIRST_NDP_TIMER) ||
2961 (timer_index >= ATH_MAX_GEN_TIMER))
2964 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2968 /* allocate a hardware generic timer slot */
2969 timer_table->timers[timer_index] = timer;
2970 timer->index = timer_index;
2971 timer->trigger = trigger;
2972 timer->overflow = overflow;
2977 EXPORT_SYMBOL(ath_gen_timer_alloc);
2979 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2980 struct ath_gen_timer *timer,
2984 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2987 timer_table->timer_mask |= BIT(timer->index);
2990 * Program generic timer registers
2992 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
2994 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
2996 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2997 gen_tmr_configuration[timer->index].mode_mask);
2999 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
3001 * Starting from AR9462, each generic timer can select which tsf
3002 * to use. But we still follow the old rule, 0 - 7 use tsf and
3005 if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
3006 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3007 (1 << timer->index));
3009 REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3010 (1 << timer->index));
3014 mask |= SM(AR_GENTMR_BIT(timer->index),
3015 AR_IMR_S5_GENTIMER_TRIG);
3016 if (timer->overflow)
3017 mask |= SM(AR_GENTMR_BIT(timer->index),
3018 AR_IMR_S5_GENTIMER_THRESH);
3020 REG_SET_BIT(ah, AR_IMR_S5, mask);
3022 if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
3023 ah->imask |= ATH9K_INT_GENTIMER;
3024 ath9k_hw_set_interrupts(ah);
3027 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
3029 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
3031 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3033 /* Clear generic timer enable bits. */
3034 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3035 gen_tmr_configuration[timer->index].mode_mask);
3037 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
3039 * Need to switch back to TSF if it was using TSF2.
3041 if ((timer->index >= AR_GEN_TIMER_BANK_1_LEN)) {
3042 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3043 (1 << timer->index));
3047 /* Disable both trigger and thresh interrupt masks */
3048 REG_CLR_BIT(ah, AR_IMR_S5,
3049 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3050 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3052 timer_table->timer_mask &= ~BIT(timer->index);
3054 if (timer_table->timer_mask == 0) {
3055 ah->imask &= ~ATH9K_INT_GENTIMER;
3056 ath9k_hw_set_interrupts(ah);
3059 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
3061 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
3063 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3065 /* free the hardware generic timer slot */
3066 timer_table->timers[timer->index] = NULL;
3069 EXPORT_SYMBOL(ath_gen_timer_free);
3072 * Generic Timer Interrupts handling
3074 void ath_gen_timer_isr(struct ath_hw *ah)
3076 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3077 struct ath_gen_timer *timer;
3078 unsigned long trigger_mask, thresh_mask;
3081 /* get hardware generic timer interrupt status */
3082 trigger_mask = ah->intr_gen_timer_trigger;
3083 thresh_mask = ah->intr_gen_timer_thresh;
3084 trigger_mask &= timer_table->timer_mask;
3085 thresh_mask &= timer_table->timer_mask;
3087 trigger_mask &= ~thresh_mask;
3089 for_each_set_bit(index, &thresh_mask, ARRAY_SIZE(timer_table->timers)) {
3090 timer = timer_table->timers[index];
3093 if (!timer->overflow)
3095 timer->overflow(timer->arg);
3098 for_each_set_bit(index, &trigger_mask, ARRAY_SIZE(timer_table->timers)) {
3099 timer = timer_table->timers[index];
3102 if (!timer->trigger)
3104 timer->trigger(timer->arg);
3107 EXPORT_SYMBOL(ath_gen_timer_isr);
3116 } ath_mac_bb_names[] = {
3117 /* Devices with external radios */
3118 { AR_SREV_VERSION_5416_PCI, "5416" },
3119 { AR_SREV_VERSION_5416_PCIE, "5418" },
3120 { AR_SREV_VERSION_9100, "9100" },
3121 { AR_SREV_VERSION_9160, "9160" },
3122 /* Single-chip solutions */
3123 { AR_SREV_VERSION_9280, "9280" },
3124 { AR_SREV_VERSION_9285, "9285" },
3125 { AR_SREV_VERSION_9287, "9287" },
3126 { AR_SREV_VERSION_9271, "9271" },
3127 { AR_SREV_VERSION_9300, "9300" },
3128 { AR_SREV_VERSION_9330, "9330" },
3129 { AR_SREV_VERSION_9340, "9340" },
3130 { AR_SREV_VERSION_9485, "9485" },
3131 { AR_SREV_VERSION_9462, "9462" },
3132 { AR_SREV_VERSION_9550, "9550" },
3133 { AR_SREV_VERSION_9565, "9565" },
3136 /* For devices with external radios */
3140 } ath_rf_names[] = {
3142 { AR_RAD5133_SREV_MAJOR, "5133" },
3143 { AR_RAD5122_SREV_MAJOR, "5122" },
3144 { AR_RAD2133_SREV_MAJOR, "2133" },
3145 { AR_RAD2122_SREV_MAJOR, "2122" }
3149 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3151 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3155 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3156 if (ath_mac_bb_names[i].version == mac_bb_version) {
3157 return ath_mac_bb_names[i].name;
3165 * Return the RF name. "????" is returned if the RF is unknown.
3166 * Used for devices with external radios.
3168 static const char *ath9k_hw_rf_name(u16 rf_version)
3172 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3173 if (ath_rf_names[i].version == rf_version) {
3174 return ath_rf_names[i].name;
3181 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3185 /* chipsets >= AR9280 are single-chip */
3186 if (AR_SREV_9280_20_OR_LATER(ah)) {
3187 used = scnprintf(hw_name, len,
3188 "Atheros AR%s Rev:%x",
3189 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3190 ah->hw_version.macRev);
3193 used = scnprintf(hw_name, len,
3194 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3195 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3196 ah->hw_version.macRev,
3197 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev
3198 & AR_RADIO_SREV_MAJOR)),
3199 ah->hw_version.phyRev);
3202 hw_name[used] = '\0';
3204 EXPORT_SYMBOL(ath9k_hw_name);