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 <linux/etherdevice.h>
23 #include <asm/unaligned.h>
27 #include "ar9003_mac.h"
28 #include "ar9003_mci.h"
29 #include "ar9003_phy.h"
32 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
34 MODULE_AUTHOR("Atheros Communications");
35 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
36 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
37 MODULE_LICENSE("Dual BSD/GPL");
39 static void ath9k_hw_set_clockrate(struct ath_hw *ah)
41 struct ath_common *common = ath9k_hw_common(ah);
42 struct ath9k_channel *chan = ah->curchan;
43 unsigned int clockrate;
45 /* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
46 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
48 else if (!chan) /* should really check for CCK instead */
49 clockrate = ATH9K_CLOCK_RATE_CCK;
50 else if (IS_CHAN_2GHZ(chan))
51 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
52 else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
53 clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
55 clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
58 if (IS_CHAN_HT40(chan))
60 if (IS_CHAN_HALF_RATE(chan))
62 if (IS_CHAN_QUARTER_RATE(chan))
66 common->clockrate = clockrate;
69 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
71 struct ath_common *common = ath9k_hw_common(ah);
73 return usecs * common->clockrate;
76 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
80 BUG_ON(timeout < AH_TIME_QUANTUM);
82 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
83 if ((REG_READ(ah, reg) & mask) == val)
86 udelay(AH_TIME_QUANTUM);
89 ath_dbg(ath9k_hw_common(ah), ANY,
90 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
91 timeout, reg, REG_READ(ah, reg), mask, val);
95 EXPORT_SYMBOL(ath9k_hw_wait);
97 void ath9k_hw_synth_delay(struct ath_hw *ah, struct ath9k_channel *chan,
102 if (IS_CHAN_HALF_RATE(chan))
104 else if (IS_CHAN_QUARTER_RATE(chan))
107 udelay(hw_delay + BASE_ACTIVATE_DELAY);
110 void ath9k_hw_write_array(struct ath_hw *ah, const struct ar5416IniArray *array,
111 int column, unsigned int *writecnt)
115 ENABLE_REGWRITE_BUFFER(ah);
116 for (r = 0; r < array->ia_rows; r++) {
117 REG_WRITE(ah, INI_RA(array, r, 0),
118 INI_RA(array, r, column));
121 REGWRITE_BUFFER_FLUSH(ah);
124 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
129 for (i = 0, retval = 0; i < n; i++) {
130 retval = (retval << 1) | (val & 1);
136 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
138 u32 frameLen, u16 rateix,
141 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
147 case WLAN_RC_PHY_CCK:
148 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
151 numBits = frameLen << 3;
152 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
154 case WLAN_RC_PHY_OFDM:
155 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
156 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
157 numBits = OFDM_PLCP_BITS + (frameLen << 3);
158 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
159 txTime = OFDM_SIFS_TIME_QUARTER
160 + OFDM_PREAMBLE_TIME_QUARTER
161 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
162 } else if (ah->curchan &&
163 IS_CHAN_HALF_RATE(ah->curchan)) {
164 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
165 numBits = OFDM_PLCP_BITS + (frameLen << 3);
166 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
167 txTime = OFDM_SIFS_TIME_HALF +
168 OFDM_PREAMBLE_TIME_HALF
169 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
171 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
172 numBits = OFDM_PLCP_BITS + (frameLen << 3);
173 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
174 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
175 + (numSymbols * OFDM_SYMBOL_TIME);
179 ath_err(ath9k_hw_common(ah),
180 "Unknown phy %u (rate ix %u)\n", phy, rateix);
187 EXPORT_SYMBOL(ath9k_hw_computetxtime);
189 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
190 struct ath9k_channel *chan,
191 struct chan_centers *centers)
195 if (!IS_CHAN_HT40(chan)) {
196 centers->ctl_center = centers->ext_center =
197 centers->synth_center = chan->channel;
201 if (IS_CHAN_HT40PLUS(chan)) {
202 centers->synth_center =
203 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
206 centers->synth_center =
207 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
211 centers->ctl_center =
212 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
213 /* 25 MHz spacing is supported by hw but not on upper layers */
214 centers->ext_center =
215 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
222 static void ath9k_hw_read_revisions(struct ath_hw *ah)
226 if (ah->get_mac_revision)
227 ah->hw_version.macRev = ah->get_mac_revision();
229 switch (ah->hw_version.devid) {
230 case AR5416_AR9100_DEVID:
231 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
233 case AR9300_DEVID_AR9330:
234 ah->hw_version.macVersion = AR_SREV_VERSION_9330;
235 if (!ah->get_mac_revision) {
236 val = REG_READ(ah, AR_SREV);
237 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
240 case AR9300_DEVID_AR9340:
241 ah->hw_version.macVersion = AR_SREV_VERSION_9340;
243 case AR9300_DEVID_QCA955X:
244 ah->hw_version.macVersion = AR_SREV_VERSION_9550;
246 case AR9300_DEVID_AR953X:
247 ah->hw_version.macVersion = AR_SREV_VERSION_9531;
251 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
254 val = REG_READ(ah, AR_SREV);
255 ah->hw_version.macVersion =
256 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
257 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
259 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
260 ah->is_pciexpress = true;
262 ah->is_pciexpress = (val &
263 AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
265 if (!AR_SREV_9100(ah))
266 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
268 ah->hw_version.macRev = val & AR_SREV_REVISION;
270 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
271 ah->is_pciexpress = true;
275 /************************************/
276 /* HW Attach, Detach, Init Routines */
277 /************************************/
279 static void ath9k_hw_disablepcie(struct ath_hw *ah)
281 if (!AR_SREV_5416(ah))
284 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
285 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
286 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
287 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
288 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
289 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
290 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
291 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
292 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
294 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
297 /* This should work for all families including legacy */
298 static bool ath9k_hw_chip_test(struct ath_hw *ah)
300 struct ath_common *common = ath9k_hw_common(ah);
301 u32 regAddr[2] = { AR_STA_ID0 };
303 static const u32 patternData[4] = {
304 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
308 if (!AR_SREV_9300_20_OR_LATER(ah)) {
310 regAddr[1] = AR_PHY_BASE + (8 << 2);
314 for (i = 0; i < loop_max; i++) {
315 u32 addr = regAddr[i];
318 regHold[i] = REG_READ(ah, addr);
319 for (j = 0; j < 0x100; j++) {
320 wrData = (j << 16) | j;
321 REG_WRITE(ah, addr, wrData);
322 rdData = REG_READ(ah, addr);
323 if (rdData != wrData) {
325 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
326 addr, wrData, rdData);
330 for (j = 0; j < 4; j++) {
331 wrData = patternData[j];
332 REG_WRITE(ah, addr, wrData);
333 rdData = REG_READ(ah, addr);
334 if (wrData != rdData) {
336 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
337 addr, wrData, rdData);
341 REG_WRITE(ah, regAddr[i], regHold[i]);
348 static void ath9k_hw_init_config(struct ath_hw *ah)
350 struct ath_common *common = ath9k_hw_common(ah);
352 ah->config.dma_beacon_response_time = 1;
353 ah->config.sw_beacon_response_time = 6;
354 ah->config.cwm_ignore_extcca = 0;
355 ah->config.analog_shiftreg = 1;
357 ah->config.rx_intr_mitigation = true;
359 if (AR_SREV_9300_20_OR_LATER(ah)) {
360 ah->config.rimt_last = 500;
361 ah->config.rimt_first = 2000;
363 ah->config.rimt_last = 250;
364 ah->config.rimt_first = 700;
368 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
369 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
370 * This means we use it for all AR5416 devices, and the few
371 * minor PCI AR9280 devices out there.
373 * Serialization is required because these devices do not handle
374 * well the case of two concurrent reads/writes due to the latency
375 * involved. During one read/write another read/write can be issued
376 * on another CPU while the previous read/write may still be working
377 * on our hardware, if we hit this case the hardware poops in a loop.
378 * We prevent this by serializing reads and writes.
380 * This issue is not present on PCI-Express devices or pre-AR5416
381 * devices (legacy, 802.11abg).
383 if (num_possible_cpus() > 1)
384 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
386 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
387 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
388 ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
389 !ah->is_pciexpress)) {
390 ah->config.serialize_regmode = SER_REG_MODE_ON;
392 ah->config.serialize_regmode = SER_REG_MODE_OFF;
396 ath_dbg(common, RESET, "serialize_regmode is %d\n",
397 ah->config.serialize_regmode);
399 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
400 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
402 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
405 static void ath9k_hw_init_defaults(struct ath_hw *ah)
407 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
409 regulatory->country_code = CTRY_DEFAULT;
410 regulatory->power_limit = MAX_RATE_POWER;
412 ah->hw_version.magic = AR5416_MAGIC;
413 ah->hw_version.subvendorid = 0;
415 ah->sta_id1_defaults = AR_STA_ID1_CRPT_MIC_ENABLE |
416 AR_STA_ID1_MCAST_KSRCH;
417 if (AR_SREV_9100(ah))
418 ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
420 ah->slottime = ATH9K_SLOT_TIME_9;
421 ah->globaltxtimeout = (u32) -1;
422 ah->power_mode = ATH9K_PM_UNDEFINED;
423 ah->htc_reset_init = true;
425 /* ar9002 does not support TPC for the moment */
426 ah->tpc_enabled = !!AR_SREV_9300_20_OR_LATER(ah);
428 ah->ani_function = ATH9K_ANI_ALL;
429 if (!AR_SREV_9300_20_OR_LATER(ah))
430 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
432 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
433 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
435 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
438 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
440 struct ath_common *common = ath9k_hw_common(ah);
444 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
447 for (i = 0; i < 3; i++) {
448 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
450 common->macaddr[2 * i] = eeval >> 8;
451 common->macaddr[2 * i + 1] = eeval & 0xff;
453 if (!is_valid_ether_addr(common->macaddr)) {
455 "eeprom contains invalid mac address: %pM\n",
458 random_ether_addr(common->macaddr);
460 "random mac address will be used: %pM\n",
467 static int ath9k_hw_post_init(struct ath_hw *ah)
469 struct ath_common *common = ath9k_hw_common(ah);
472 if (common->bus_ops->ath_bus_type != ATH_USB) {
473 if (!ath9k_hw_chip_test(ah))
477 if (!AR_SREV_9300_20_OR_LATER(ah)) {
478 ecode = ar9002_hw_rf_claim(ah);
483 ecode = ath9k_hw_eeprom_init(ah);
487 ath_dbg(ath9k_hw_common(ah), CONFIG, "Eeprom VER: %d, REV: %d\n",
488 ah->eep_ops->get_eeprom_ver(ah),
489 ah->eep_ops->get_eeprom_rev(ah));
491 ath9k_hw_ani_init(ah);
494 * EEPROM needs to be initialized before we do this.
495 * This is required for regulatory compliance.
497 if (AR_SREV_9300_20_OR_LATER(ah)) {
498 u16 regdmn = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
499 if ((regdmn & 0xF0) == CTL_FCC) {
500 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_FCC_2GHZ;
501 ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_FCC_5GHZ;
508 static int ath9k_hw_attach_ops(struct ath_hw *ah)
510 if (!AR_SREV_9300_20_OR_LATER(ah))
511 return ar9002_hw_attach_ops(ah);
513 ar9003_hw_attach_ops(ah);
517 /* Called for all hardware families */
518 static int __ath9k_hw_init(struct ath_hw *ah)
520 struct ath_common *common = ath9k_hw_common(ah);
523 ath9k_hw_read_revisions(ah);
525 switch (ah->hw_version.macVersion) {
526 case AR_SREV_VERSION_5416_PCI:
527 case AR_SREV_VERSION_5416_PCIE:
528 case AR_SREV_VERSION_9160:
529 case AR_SREV_VERSION_9100:
530 case AR_SREV_VERSION_9280:
531 case AR_SREV_VERSION_9285:
532 case AR_SREV_VERSION_9287:
533 case AR_SREV_VERSION_9271:
534 case AR_SREV_VERSION_9300:
535 case AR_SREV_VERSION_9330:
536 case AR_SREV_VERSION_9485:
537 case AR_SREV_VERSION_9340:
538 case AR_SREV_VERSION_9462:
539 case AR_SREV_VERSION_9550:
540 case AR_SREV_VERSION_9565:
541 case AR_SREV_VERSION_9531:
545 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
546 ah->hw_version.macVersion, ah->hw_version.macRev);
551 * Read back AR_WA into a permanent copy and set bits 14 and 17.
552 * We need to do this to avoid RMW of this register. We cannot
553 * read the reg when chip is asleep.
555 if (AR_SREV_9300_20_OR_LATER(ah)) {
556 ah->WARegVal = REG_READ(ah, AR_WA);
557 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
558 AR_WA_ASPM_TIMER_BASED_DISABLE);
561 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
562 ath_err(common, "Couldn't reset chip\n");
566 if (AR_SREV_9565(ah)) {
567 ah->WARegVal |= AR_WA_BIT22;
568 REG_WRITE(ah, AR_WA, ah->WARegVal);
571 ath9k_hw_init_defaults(ah);
572 ath9k_hw_init_config(ah);
574 r = ath9k_hw_attach_ops(ah);
578 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
579 ath_err(common, "Couldn't wakeup chip\n");
583 if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
584 AR_SREV_9330(ah) || AR_SREV_9550(ah))
585 ah->is_pciexpress = false;
587 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
588 ath9k_hw_init_cal_settings(ah);
590 if (!ah->is_pciexpress)
591 ath9k_hw_disablepcie(ah);
593 r = ath9k_hw_post_init(ah);
597 ath9k_hw_init_mode_gain_regs(ah);
598 r = ath9k_hw_fill_cap_info(ah);
602 r = ath9k_hw_init_macaddr(ah);
604 ath_err(common, "Failed to initialize MAC address\n");
608 ath9k_hw_init_hang_checks(ah);
610 common->state = ATH_HW_INITIALIZED;
615 int ath9k_hw_init(struct ath_hw *ah)
618 struct ath_common *common = ath9k_hw_common(ah);
620 /* These are all the AR5008/AR9001/AR9002/AR9003 hardware family of chipsets */
621 switch (ah->hw_version.devid) {
622 case AR5416_DEVID_PCI:
623 case AR5416_DEVID_PCIE:
624 case AR5416_AR9100_DEVID:
625 case AR9160_DEVID_PCI:
626 case AR9280_DEVID_PCI:
627 case AR9280_DEVID_PCIE:
628 case AR9285_DEVID_PCIE:
629 case AR9287_DEVID_PCI:
630 case AR9287_DEVID_PCIE:
631 case AR2427_DEVID_PCIE:
632 case AR9300_DEVID_PCIE:
633 case AR9300_DEVID_AR9485_PCIE:
634 case AR9300_DEVID_AR9330:
635 case AR9300_DEVID_AR9340:
636 case AR9300_DEVID_QCA955X:
637 case AR9300_DEVID_AR9580:
638 case AR9300_DEVID_AR9462:
639 case AR9485_DEVID_AR1111:
640 case AR9300_DEVID_AR9565:
641 case AR9300_DEVID_AR953X:
644 if (common->bus_ops->ath_bus_type == ATH_USB)
646 ath_err(common, "Hardware device ID 0x%04x not supported\n",
647 ah->hw_version.devid);
651 ret = __ath9k_hw_init(ah);
654 "Unable to initialize hardware; initialization status: %d\n",
663 EXPORT_SYMBOL(ath9k_hw_init);
665 static void ath9k_hw_init_qos(struct ath_hw *ah)
667 ENABLE_REGWRITE_BUFFER(ah);
669 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
670 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
672 REG_WRITE(ah, AR_QOS_NO_ACK,
673 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
674 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
675 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
677 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
678 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
679 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
680 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
681 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
683 REGWRITE_BUFFER_FLUSH(ah);
686 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
688 struct ath_common *common = ath9k_hw_common(ah);
691 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
693 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
695 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
699 if (WARN_ON_ONCE(i >= 100)) {
700 ath_err(common, "PLL4 meaurement not done\n");
707 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
709 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
711 static void ath9k_hw_init_pll(struct ath_hw *ah,
712 struct ath9k_channel *chan)
716 pll = ath9k_hw_compute_pll_control(ah, chan);
718 if (AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
719 /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
720 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
721 AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
722 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
723 AR_CH0_DPLL2_KD, 0x40);
724 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
725 AR_CH0_DPLL2_KI, 0x4);
727 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
728 AR_CH0_BB_DPLL1_REFDIV, 0x5);
729 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
730 AR_CH0_BB_DPLL1_NINI, 0x58);
731 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
732 AR_CH0_BB_DPLL1_NFRAC, 0x0);
734 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
735 AR_CH0_BB_DPLL2_OUTDIV, 0x1);
736 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
737 AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
738 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
739 AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
741 /* program BB PLL phase_shift to 0x6 */
742 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
743 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
745 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
746 AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
748 } else if (AR_SREV_9330(ah)) {
749 u32 ddr_dpll2, pll_control2, kd;
751 if (ah->is_clk_25mhz) {
752 ddr_dpll2 = 0x18e82f01;
753 pll_control2 = 0xe04a3d;
756 ddr_dpll2 = 0x19e82f01;
757 pll_control2 = 0x886666;
761 /* program DDR PLL ki and kd value */
762 REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
764 /* program DDR PLL phase_shift */
765 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
766 AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
768 REG_WRITE(ah, AR_RTC_PLL_CONTROL,
769 pll | AR_RTC_9300_PLL_BYPASS);
772 /* program refdiv, nint, frac to RTC register */
773 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
775 /* program BB PLL kd and ki value */
776 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
777 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
779 /* program BB PLL phase_shift */
780 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
781 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
782 } else if (AR_SREV_9340(ah) || AR_SREV_9550(ah) || AR_SREV_9531(ah)) {
783 u32 regval, pll2_divint, pll2_divfrac, refdiv;
785 REG_WRITE(ah, AR_RTC_PLL_CONTROL,
786 pll | AR_RTC_9300_SOC_PLL_BYPASS);
789 REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
792 if (ah->is_clk_25mhz) {
793 if (AR_SREV_9531(ah)) {
795 pll2_divfrac = 0xa3d2;
799 pll2_divfrac = 0x1eb85;
803 if (AR_SREV_9340(ah)) {
810 AR_SREV_9531(ah) ? 0x26665 : 0x26666;
815 regval = REG_READ(ah, AR_PHY_PLL_MODE);
816 if (AR_SREV_9531(ah))
817 regval |= (0x1 << 22);
819 regval |= (0x1 << 16);
820 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
823 REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
824 (pll2_divint << 18) | pll2_divfrac);
827 regval = REG_READ(ah, AR_PHY_PLL_MODE);
828 if (AR_SREV_9340(ah))
829 regval = (regval & 0x80071fff) |
834 else if (AR_SREV_9531(ah))
835 regval = (regval & 0x01c00fff) |
842 regval = (regval & 0x80071fff) |
847 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
849 if (AR_SREV_9531(ah))
850 REG_WRITE(ah, AR_PHY_PLL_MODE,
851 REG_READ(ah, AR_PHY_PLL_MODE) & 0xffbfffff);
853 REG_WRITE(ah, AR_PHY_PLL_MODE,
854 REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
859 if (AR_SREV_9565(ah))
861 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
863 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
867 /* Switch the core clock for ar9271 to 117Mhz */
868 if (AR_SREV_9271(ah)) {
870 REG_WRITE(ah, 0x50040, 0x304);
873 udelay(RTC_PLL_SETTLE_DELAY);
875 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
878 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
879 enum nl80211_iftype opmode)
881 u32 sync_default = AR_INTR_SYNC_DEFAULT;
882 u32 imr_reg = AR_IMR_TXERR |
888 if (AR_SREV_9340(ah) || AR_SREV_9550(ah) || AR_SREV_9531(ah))
889 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
891 if (AR_SREV_9300_20_OR_LATER(ah)) {
892 imr_reg |= AR_IMR_RXOK_HP;
893 if (ah->config.rx_intr_mitigation)
894 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
896 imr_reg |= AR_IMR_RXOK_LP;
899 if (ah->config.rx_intr_mitigation)
900 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
902 imr_reg |= AR_IMR_RXOK;
905 if (ah->config.tx_intr_mitigation)
906 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
908 imr_reg |= AR_IMR_TXOK;
910 ENABLE_REGWRITE_BUFFER(ah);
912 REG_WRITE(ah, AR_IMR, imr_reg);
913 ah->imrs2_reg |= AR_IMR_S2_GTT;
914 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
916 if (!AR_SREV_9100(ah)) {
917 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
918 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
919 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
922 REGWRITE_BUFFER_FLUSH(ah);
924 if (AR_SREV_9300_20_OR_LATER(ah)) {
925 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
926 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
927 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
928 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
932 static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
934 u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
935 val = min(val, (u32) 0xFFFF);
936 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
939 void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
941 u32 val = ath9k_hw_mac_to_clks(ah, us);
942 val = min(val, (u32) 0xFFFF);
943 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
946 void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
948 u32 val = ath9k_hw_mac_to_clks(ah, us);
949 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
950 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
953 void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
955 u32 val = ath9k_hw_mac_to_clks(ah, us);
956 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
957 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
960 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
963 ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
965 ah->globaltxtimeout = (u32) -1;
968 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
969 ah->globaltxtimeout = tu;
974 void ath9k_hw_init_global_settings(struct ath_hw *ah)
976 struct ath_common *common = ath9k_hw_common(ah);
977 const struct ath9k_channel *chan = ah->curchan;
978 int acktimeout, ctstimeout, ack_offset = 0;
981 int rx_lat = 0, tx_lat = 0, eifs = 0;
984 ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
990 if (ah->misc_mode != 0)
991 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
993 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
999 if (IS_CHAN_5GHZ(chan))
1004 if (IS_CHAN_HALF_RATE(chan)) {
1008 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1014 } else if (IS_CHAN_QUARTER_RATE(chan)) {
1016 rx_lat = (rx_lat * 4) - 1;
1018 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1025 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1026 eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
1027 reg = AR_USEC_ASYNC_FIFO;
1029 eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
1031 reg = REG_READ(ah, AR_USEC);
1033 rx_lat = MS(reg, AR_USEC_RX_LAT);
1034 tx_lat = MS(reg, AR_USEC_TX_LAT);
1036 slottime = ah->slottime;
1039 /* As defined by IEEE 802.11-2007 17.3.8.6 */
1040 slottime += 3 * ah->coverage_class;
1041 acktimeout = slottime + sifstime + ack_offset;
1042 ctstimeout = acktimeout;
1045 * Workaround for early ACK timeouts, add an offset to match the
1046 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
1047 * This was initially only meant to work around an issue with delayed
1048 * BA frames in some implementations, but it has been found to fix ACK
1049 * timeout issues in other cases as well.
1051 if (IS_CHAN_2GHZ(chan) &&
1052 !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
1053 acktimeout += 64 - sifstime - ah->slottime;
1054 ctstimeout += 48 - sifstime - ah->slottime;
1057 if (ah->dynack.enabled) {
1058 acktimeout = ah->dynack.ackto;
1059 ctstimeout = acktimeout;
1060 slottime = (acktimeout - 3) / 2;
1062 ah->dynack.ackto = acktimeout;
1065 ath9k_hw_set_sifs_time(ah, sifstime);
1066 ath9k_hw_setslottime(ah, slottime);
1067 ath9k_hw_set_ack_timeout(ah, acktimeout);
1068 ath9k_hw_set_cts_timeout(ah, ctstimeout);
1069 if (ah->globaltxtimeout != (u32) -1)
1070 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
1072 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
1073 REG_RMW(ah, AR_USEC,
1074 (common->clockrate - 1) |
1075 SM(rx_lat, AR_USEC_RX_LAT) |
1076 SM(tx_lat, AR_USEC_TX_LAT),
1077 AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
1080 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
1082 void ath9k_hw_deinit(struct ath_hw *ah)
1084 struct ath_common *common = ath9k_hw_common(ah);
1086 if (common->state < ATH_HW_INITIALIZED)
1089 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1091 EXPORT_SYMBOL(ath9k_hw_deinit);
1097 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
1099 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
1101 if (IS_CHAN_2GHZ(chan))
1109 /****************************************/
1110 /* Reset and Channel Switching Routines */
1111 /****************************************/
1113 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
1115 struct ath_common *common = ath9k_hw_common(ah);
1118 ENABLE_REGWRITE_BUFFER(ah);
1121 * set AHB_MODE not to do cacheline prefetches
1123 if (!AR_SREV_9300_20_OR_LATER(ah))
1124 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
1127 * let mac dma reads be in 128 byte chunks
1129 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
1131 REGWRITE_BUFFER_FLUSH(ah);
1134 * Restore TX Trigger Level to its pre-reset value.
1135 * The initial value depends on whether aggregation is enabled, and is
1136 * adjusted whenever underruns are detected.
1138 if (!AR_SREV_9300_20_OR_LATER(ah))
1139 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
1141 ENABLE_REGWRITE_BUFFER(ah);
1144 * let mac dma writes be in 128 byte chunks
1146 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
1149 * Setup receive FIFO threshold to hold off TX activities
1151 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
1153 if (AR_SREV_9300_20_OR_LATER(ah)) {
1154 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
1155 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
1157 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
1158 ah->caps.rx_status_len);
1162 * reduce the number of usable entries in PCU TXBUF to avoid
1163 * wrap around issues.
1165 if (AR_SREV_9285(ah)) {
1166 /* For AR9285 the number of Fifos are reduced to half.
1167 * So set the usable tx buf size also to half to
1168 * avoid data/delimiter underruns
1170 txbuf_size = AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE;
1171 } else if (AR_SREV_9340_13_OR_LATER(ah)) {
1172 /* Uses fewer entries for AR934x v1.3+ to prevent rx overruns */
1173 txbuf_size = AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE;
1175 txbuf_size = AR_PCU_TXBUF_CTRL_USABLE_SIZE;
1178 if (!AR_SREV_9271(ah))
1179 REG_WRITE(ah, AR_PCU_TXBUF_CTRL, txbuf_size);
1181 REGWRITE_BUFFER_FLUSH(ah);
1183 if (AR_SREV_9300_20_OR_LATER(ah))
1184 ath9k_hw_reset_txstatus_ring(ah);
1187 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
1189 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
1190 u32 set = AR_STA_ID1_KSRCH_MODE;
1193 case NL80211_IFTYPE_ADHOC:
1194 if (!AR_SREV_9340_13(ah)) {
1195 set |= AR_STA_ID1_ADHOC;
1196 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1200 case NL80211_IFTYPE_MESH_POINT:
1201 case NL80211_IFTYPE_AP:
1202 set |= AR_STA_ID1_STA_AP;
1204 case NL80211_IFTYPE_STATION:
1205 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1208 if (!ah->is_monitoring)
1212 REG_RMW(ah, AR_STA_ID1, set, mask);
1215 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1216 u32 *coef_mantissa, u32 *coef_exponent)
1218 u32 coef_exp, coef_man;
1220 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1221 if ((coef_scaled >> coef_exp) & 0x1)
1224 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1226 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1228 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1229 *coef_exponent = coef_exp - 16;
1233 * call external reset function to reset WMAC if:
1234 * - doing a cold reset
1235 * - we have pending frames in the TX queues.
1237 static bool ath9k_hw_ar9330_reset_war(struct ath_hw *ah, int type)
1241 for (i = 0; i < AR_NUM_QCU; i++) {
1242 npend = ath9k_hw_numtxpending(ah, i);
1247 if (ah->external_reset &&
1248 (npend || type == ATH9K_RESET_COLD)) {
1251 ath_dbg(ath9k_hw_common(ah), RESET,
1252 "reset MAC via external reset\n");
1254 reset_err = ah->external_reset();
1256 ath_err(ath9k_hw_common(ah),
1257 "External reset failed, err=%d\n",
1262 REG_WRITE(ah, AR_RTC_RESET, 1);
1268 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1273 if (AR_SREV_9100(ah)) {
1274 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1275 AR_RTC_DERIVED_CLK_PERIOD, 1);
1276 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1279 ENABLE_REGWRITE_BUFFER(ah);
1281 if (AR_SREV_9300_20_OR_LATER(ah)) {
1282 REG_WRITE(ah, AR_WA, ah->WARegVal);
1286 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1287 AR_RTC_FORCE_WAKE_ON_INT);
1289 if (AR_SREV_9100(ah)) {
1290 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1291 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1293 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1294 if (AR_SREV_9340(ah))
1295 tmpReg &= AR9340_INTR_SYNC_LOCAL_TIMEOUT;
1297 tmpReg &= AR_INTR_SYNC_LOCAL_TIMEOUT |
1298 AR_INTR_SYNC_RADM_CPL_TIMEOUT;
1302 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1305 if (!AR_SREV_9300_20_OR_LATER(ah))
1307 REG_WRITE(ah, AR_RC, val);
1309 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1310 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1312 rst_flags = AR_RTC_RC_MAC_WARM;
1313 if (type == ATH9K_RESET_COLD)
1314 rst_flags |= AR_RTC_RC_MAC_COLD;
1317 if (AR_SREV_9330(ah)) {
1318 if (!ath9k_hw_ar9330_reset_war(ah, type))
1322 if (ath9k_hw_mci_is_enabled(ah))
1323 ar9003_mci_check_gpm_offset(ah);
1325 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1327 REGWRITE_BUFFER_FLUSH(ah);
1329 if (AR_SREV_9300_20_OR_LATER(ah))
1331 else if (AR_SREV_9100(ah))
1336 REG_WRITE(ah, AR_RTC_RC, 0);
1337 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1338 ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
1342 if (!AR_SREV_9100(ah))
1343 REG_WRITE(ah, AR_RC, 0);
1345 if (AR_SREV_9100(ah))
1351 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1353 ENABLE_REGWRITE_BUFFER(ah);
1355 if (AR_SREV_9300_20_OR_LATER(ah)) {
1356 REG_WRITE(ah, AR_WA, ah->WARegVal);
1360 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1361 AR_RTC_FORCE_WAKE_ON_INT);
1363 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1364 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1366 REG_WRITE(ah, AR_RTC_RESET, 0);
1368 REGWRITE_BUFFER_FLUSH(ah);
1372 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1373 REG_WRITE(ah, AR_RC, 0);
1375 REG_WRITE(ah, AR_RTC_RESET, 1);
1377 if (!ath9k_hw_wait(ah,
1382 ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
1386 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1389 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1393 if (AR_SREV_9300_20_OR_LATER(ah)) {
1394 REG_WRITE(ah, AR_WA, ah->WARegVal);
1398 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1399 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1401 if (!ah->reset_power_on)
1402 type = ATH9K_RESET_POWER_ON;
1405 case ATH9K_RESET_POWER_ON:
1406 ret = ath9k_hw_set_reset_power_on(ah);
1408 ah->reset_power_on = true;
1410 case ATH9K_RESET_WARM:
1411 case ATH9K_RESET_COLD:
1412 ret = ath9k_hw_set_reset(ah, type);
1421 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1422 struct ath9k_channel *chan)
1424 int reset_type = ATH9K_RESET_WARM;
1426 if (AR_SREV_9280(ah)) {
1427 if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1428 reset_type = ATH9K_RESET_POWER_ON;
1430 reset_type = ATH9K_RESET_COLD;
1431 } else if (ah->chip_fullsleep || REG_READ(ah, AR_Q_TXE) ||
1432 (REG_READ(ah, AR_CR) & AR_CR_RXE))
1433 reset_type = ATH9K_RESET_COLD;
1435 if (!ath9k_hw_set_reset_reg(ah, reset_type))
1438 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1441 ah->chip_fullsleep = false;
1443 if (AR_SREV_9330(ah))
1444 ar9003_hw_internal_regulator_apply(ah);
1445 ath9k_hw_init_pll(ah, chan);
1450 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1451 struct ath9k_channel *chan)
1453 struct ath_common *common = ath9k_hw_common(ah);
1454 struct ath9k_hw_capabilities *pCap = &ah->caps;
1455 bool band_switch = false, mode_diff = false;
1456 u8 ini_reloaded = 0;
1460 if (pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) {
1461 u32 flags_diff = chan->channelFlags ^ ah->curchan->channelFlags;
1462 band_switch = !!(flags_diff & CHANNEL_5GHZ);
1463 mode_diff = !!(flags_diff & ~CHANNEL_HT);
1466 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1467 if (ath9k_hw_numtxpending(ah, qnum)) {
1468 ath_dbg(common, QUEUE,
1469 "Transmit frames pending on queue %d\n", qnum);
1474 if (!ath9k_hw_rfbus_req(ah)) {
1475 ath_err(common, "Could not kill baseband RX\n");
1479 if (band_switch || mode_diff) {
1480 ath9k_hw_mark_phy_inactive(ah);
1484 ath9k_hw_init_pll(ah, chan);
1486 if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
1487 ath_err(common, "Failed to do fast channel change\n");
1492 ath9k_hw_set_channel_regs(ah, chan);
1494 r = ath9k_hw_rf_set_freq(ah, chan);
1496 ath_err(common, "Failed to set channel\n");
1499 ath9k_hw_set_clockrate(ah);
1500 ath9k_hw_apply_txpower(ah, chan, false);
1502 ath9k_hw_set_delta_slope(ah, chan);
1503 ath9k_hw_spur_mitigate_freq(ah, chan);
1505 if (band_switch || ini_reloaded)
1506 ah->eep_ops->set_board_values(ah, chan);
1508 ath9k_hw_init_bb(ah, chan);
1509 ath9k_hw_rfbus_done(ah);
1511 if (band_switch || ini_reloaded) {
1512 ah->ah_flags |= AH_FASTCC;
1513 ath9k_hw_init_cal(ah, chan);
1514 ah->ah_flags &= ~AH_FASTCC;
1520 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1522 u32 gpio_mask = ah->gpio_mask;
1525 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1526 if (!(gpio_mask & 1))
1529 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1530 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1534 void ath9k_hw_check_nav(struct ath_hw *ah)
1536 struct ath_common *common = ath9k_hw_common(ah);
1539 val = REG_READ(ah, AR_NAV);
1540 if (val != 0xdeadbeef && val > 0x7fff) {
1541 ath_dbg(common, BSTUCK, "Abnormal NAV: 0x%x\n", val);
1542 REG_WRITE(ah, AR_NAV, 0);
1545 EXPORT_SYMBOL(ath9k_hw_check_nav);
1547 bool ath9k_hw_check_alive(struct ath_hw *ah)
1552 if (AR_SREV_9300(ah))
1553 return !ath9k_hw_detect_mac_hang(ah);
1555 if (AR_SREV_9285_12_OR_LATER(ah))
1558 last_val = REG_READ(ah, AR_OBS_BUS_1);
1560 reg = REG_READ(ah, AR_OBS_BUS_1);
1561 if (reg != last_val)
1566 if ((reg & 0x7E7FFFEF) == 0x00702400)
1569 switch (reg & 0x7E000B00) {
1577 } while (count-- > 0);
1581 EXPORT_SYMBOL(ath9k_hw_check_alive);
1583 static void ath9k_hw_init_mfp(struct ath_hw *ah)
1585 /* Setup MFP options for CCMP */
1586 if (AR_SREV_9280_20_OR_LATER(ah)) {
1587 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1588 * frames when constructing CCMP AAD. */
1589 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1591 if (AR_SREV_9271(ah) || AR_DEVID_7010(ah))
1592 ah->sw_mgmt_crypto_tx = true;
1594 ah->sw_mgmt_crypto_tx = false;
1595 ah->sw_mgmt_crypto_rx = false;
1596 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1597 /* Disable hardware crypto for management frames */
1598 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1599 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1600 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1601 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1602 ah->sw_mgmt_crypto_tx = true;
1603 ah->sw_mgmt_crypto_rx = true;
1605 ah->sw_mgmt_crypto_tx = true;
1606 ah->sw_mgmt_crypto_rx = true;
1610 static void ath9k_hw_reset_opmode(struct ath_hw *ah,
1611 u32 macStaId1, u32 saveDefAntenna)
1613 struct ath_common *common = ath9k_hw_common(ah);
1615 ENABLE_REGWRITE_BUFFER(ah);
1617 REG_RMW(ah, AR_STA_ID1, macStaId1
1618 | AR_STA_ID1_RTS_USE_DEF
1619 | ah->sta_id1_defaults,
1620 ~AR_STA_ID1_SADH_MASK);
1621 ath_hw_setbssidmask(common);
1622 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1623 ath9k_hw_write_associd(ah);
1624 REG_WRITE(ah, AR_ISR, ~0);
1625 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1627 REGWRITE_BUFFER_FLUSH(ah);
1629 ath9k_hw_set_operating_mode(ah, ah->opmode);
1632 static void ath9k_hw_init_queues(struct ath_hw *ah)
1636 ENABLE_REGWRITE_BUFFER(ah);
1638 for (i = 0; i < AR_NUM_DCU; i++)
1639 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1641 REGWRITE_BUFFER_FLUSH(ah);
1644 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1645 ath9k_hw_resettxqueue(ah, i);
1649 * For big endian systems turn on swapping for descriptors
1651 static void ath9k_hw_init_desc(struct ath_hw *ah)
1653 struct ath_common *common = ath9k_hw_common(ah);
1655 if (AR_SREV_9100(ah)) {
1657 mask = REG_READ(ah, AR_CFG);
1658 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1659 ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
1662 mask = INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1663 REG_WRITE(ah, AR_CFG, mask);
1664 ath_dbg(common, RESET, "Setting CFG 0x%x\n",
1665 REG_READ(ah, AR_CFG));
1668 if (common->bus_ops->ath_bus_type == ATH_USB) {
1669 /* Configure AR9271 target WLAN */
1670 if (AR_SREV_9271(ah))
1671 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1673 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1676 else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
1677 AR_SREV_9550(ah) || AR_SREV_9531(ah))
1678 REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
1680 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1686 * Fast channel change:
1687 * (Change synthesizer based on channel freq without resetting chip)
1689 static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
1691 struct ath_common *common = ath9k_hw_common(ah);
1692 struct ath9k_hw_capabilities *pCap = &ah->caps;
1695 if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
1698 if (ah->chip_fullsleep)
1704 if (chan->channel == ah->curchan->channel)
1707 if ((ah->curchan->channelFlags | chan->channelFlags) &
1708 (CHANNEL_HALF | CHANNEL_QUARTER))
1712 * If cross-band fcc is not supoprted, bail out if channelFlags differ.
1714 if (!(pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) &&
1715 ((chan->channelFlags ^ ah->curchan->channelFlags) & ~CHANNEL_HT))
1718 if (!ath9k_hw_check_alive(ah))
1722 * For AR9462, make sure that calibration data for
1723 * re-using are present.
1725 if (AR_SREV_9462(ah) && (ah->caldata &&
1726 (!test_bit(TXIQCAL_DONE, &ah->caldata->cal_flags) ||
1727 !test_bit(TXCLCAL_DONE, &ah->caldata->cal_flags) ||
1728 !test_bit(RTT_DONE, &ah->caldata->cal_flags))))
1731 ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
1732 ah->curchan->channel, chan->channel);
1734 ret = ath9k_hw_channel_change(ah, chan);
1738 if (ath9k_hw_mci_is_enabled(ah))
1739 ar9003_mci_2g5g_switch(ah, false);
1741 ath9k_hw_loadnf(ah, ah->curchan);
1742 ath9k_hw_start_nfcal(ah, true);
1744 if (AR_SREV_9271(ah))
1745 ar9002_hw_load_ani_reg(ah, chan);
1752 u32 ath9k_hw_get_tsf_offset(struct timespec *last, struct timespec *cur)
1758 getrawmonotonic(&ts);
1762 usec = cur->tv_sec * 1000000ULL + cur->tv_nsec / 1000;
1763 usec -= last->tv_sec * 1000000ULL + last->tv_nsec / 1000;
1767 EXPORT_SYMBOL(ath9k_hw_get_tsf_offset);
1769 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1770 struct ath9k_hw_cal_data *caldata, bool fastcc)
1772 struct ath_common *common = ath9k_hw_common(ah);
1779 bool start_mci_reset = false;
1780 bool save_fullsleep = ah->chip_fullsleep;
1782 if (ath9k_hw_mci_is_enabled(ah)) {
1783 start_mci_reset = ar9003_mci_start_reset(ah, chan);
1784 if (start_mci_reset)
1788 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1791 if (ah->curchan && !ah->chip_fullsleep)
1792 ath9k_hw_getnf(ah, ah->curchan);
1794 ah->caldata = caldata;
1795 if (caldata && (chan->channel != caldata->channel ||
1796 chan->channelFlags != caldata->channelFlags)) {
1797 /* Operating channel changed, reset channel calibration data */
1798 memset(caldata, 0, sizeof(*caldata));
1799 ath9k_init_nfcal_hist_buffer(ah, chan);
1800 } else if (caldata) {
1801 clear_bit(PAPRD_PACKET_SENT, &caldata->cal_flags);
1803 ah->noise = ath9k_hw_getchan_noise(ah, chan, chan->noisefloor);
1806 r = ath9k_hw_do_fastcc(ah, chan);
1811 if (ath9k_hw_mci_is_enabled(ah))
1812 ar9003_mci_stop_bt(ah, save_fullsleep);
1814 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1815 if (saveDefAntenna == 0)
1818 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1820 /* Save TSF before chip reset, a cold reset clears it */
1821 tsf = ath9k_hw_gettsf64(ah);
1822 usec = ktime_to_us(ktime_get_raw());
1824 saveLedState = REG_READ(ah, AR_CFG_LED) &
1825 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1826 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1828 ath9k_hw_mark_phy_inactive(ah);
1830 ah->paprd_table_write_done = false;
1832 /* Only required on the first reset */
1833 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1835 AR9271_RESET_POWER_DOWN_CONTROL,
1836 AR9271_RADIO_RF_RST);
1840 if (!ath9k_hw_chip_reset(ah, chan)) {
1841 ath_err(common, "Chip reset failed\n");
1845 /* Only required on the first reset */
1846 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1847 ah->htc_reset_init = false;
1849 AR9271_RESET_POWER_DOWN_CONTROL,
1850 AR9271_GATE_MAC_CTL);
1855 usec = ktime_to_us(ktime_get_raw()) - usec;
1856 ath9k_hw_settsf64(ah, tsf + usec);
1858 if (AR_SREV_9280_20_OR_LATER(ah))
1859 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1861 if (!AR_SREV_9300_20_OR_LATER(ah))
1862 ar9002_hw_enable_async_fifo(ah);
1864 r = ath9k_hw_process_ini(ah, chan);
1868 ath9k_hw_set_rfmode(ah, chan);
1870 if (ath9k_hw_mci_is_enabled(ah))
1871 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
1874 * Some AR91xx SoC devices frequently fail to accept TSF writes
1875 * right after the chip reset. When that happens, write a new
1876 * value after the initvals have been applied, with an offset
1877 * based on measured time difference
1879 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1881 ath9k_hw_settsf64(ah, tsf);
1884 ath9k_hw_init_mfp(ah);
1886 ath9k_hw_set_delta_slope(ah, chan);
1887 ath9k_hw_spur_mitigate_freq(ah, chan);
1888 ah->eep_ops->set_board_values(ah, chan);
1890 ath9k_hw_reset_opmode(ah, macStaId1, saveDefAntenna);
1892 r = ath9k_hw_rf_set_freq(ah, chan);
1896 ath9k_hw_set_clockrate(ah);
1898 ath9k_hw_init_queues(ah);
1899 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1900 ath9k_hw_ani_cache_ini_regs(ah);
1901 ath9k_hw_init_qos(ah);
1903 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1904 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1906 ath9k_hw_init_global_settings(ah);
1908 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1909 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1910 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1911 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1912 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1913 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1914 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1917 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1919 ath9k_hw_set_dma(ah);
1921 if (!ath9k_hw_mci_is_enabled(ah))
1922 REG_WRITE(ah, AR_OBS, 8);
1924 if (ah->config.rx_intr_mitigation) {
1925 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, ah->config.rimt_last);
1926 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, ah->config.rimt_first);
1929 if (ah->config.tx_intr_mitigation) {
1930 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1931 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1934 ath9k_hw_init_bb(ah, chan);
1937 clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
1938 clear_bit(TXCLCAL_DONE, &caldata->cal_flags);
1940 if (!ath9k_hw_init_cal(ah, chan))
1943 if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
1946 ENABLE_REGWRITE_BUFFER(ah);
1948 ath9k_hw_restore_chainmask(ah);
1949 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1951 REGWRITE_BUFFER_FLUSH(ah);
1953 ath9k_hw_gen_timer_start_tsf2(ah);
1955 ath9k_hw_init_desc(ah);
1957 if (ath9k_hw_btcoex_is_enabled(ah))
1958 ath9k_hw_btcoex_enable(ah);
1960 if (ath9k_hw_mci_is_enabled(ah))
1961 ar9003_mci_check_bt(ah);
1963 if (AR_SREV_9300_20_OR_LATER(ah)) {
1964 ath9k_hw_loadnf(ah, chan);
1965 ath9k_hw_start_nfcal(ah, true);
1968 if (AR_SREV_9300_20_OR_LATER(ah))
1969 ar9003_hw_bb_watchdog_config(ah);
1971 if (ah->config.hw_hang_checks & HW_PHYRESTART_CLC_WAR)
1972 ar9003_hw_disable_phy_restart(ah);
1974 ath9k_hw_apply_gpio_override(ah);
1976 if (AR_SREV_9565(ah) && common->bt_ant_diversity)
1977 REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
1979 if (ah->hw->conf.radar_enabled) {
1980 /* set HW specific DFS configuration */
1981 ah->radar_conf.ext_channel = IS_CHAN_HT40(chan);
1982 ath9k_hw_set_radar_params(ah);
1987 EXPORT_SYMBOL(ath9k_hw_reset);
1989 /******************************/
1990 /* Power Management (Chipset) */
1991 /******************************/
1994 * Notify Power Mgt is disabled in self-generated frames.
1995 * If requested, force chip to sleep.
1997 static void ath9k_set_power_sleep(struct ath_hw *ah)
1999 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2001 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
2002 REG_CLR_BIT(ah, AR_TIMER_MODE, 0xff);
2003 REG_CLR_BIT(ah, AR_NDP2_TIMER_MODE, 0xff);
2004 REG_CLR_BIT(ah, AR_SLP32_INC, 0xfffff);
2005 /* xxx Required for WLAN only case ? */
2006 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
2011 * Clear the RTC force wake bit to allow the
2012 * mac to go to sleep.
2014 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2016 if (ath9k_hw_mci_is_enabled(ah))
2019 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
2020 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
2022 /* Shutdown chip. Active low */
2023 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
2024 REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
2028 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
2029 if (AR_SREV_9300_20_OR_LATER(ah))
2030 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2034 * Notify Power Management is enabled in self-generating
2035 * frames. If request, set power mode of chip to
2036 * auto/normal. Duration in units of 128us (1/8 TU).
2038 static void ath9k_set_power_network_sleep(struct ath_hw *ah)
2040 struct ath9k_hw_capabilities *pCap = &ah->caps;
2042 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2044 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
2045 /* Set WakeOnInterrupt bit; clear ForceWake bit */
2046 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
2047 AR_RTC_FORCE_WAKE_ON_INT);
2050 /* When chip goes into network sleep, it could be waken
2051 * up by MCI_INT interrupt caused by BT's HW messages
2052 * (LNA_xxx, CONT_xxx) which chould be in a very fast
2053 * rate (~100us). This will cause chip to leave and
2054 * re-enter network sleep mode frequently, which in
2055 * consequence will have WLAN MCI HW to generate lots of
2056 * SYS_WAKING and SYS_SLEEPING messages which will make
2057 * BT CPU to busy to process.
2059 if (ath9k_hw_mci_is_enabled(ah))
2060 REG_CLR_BIT(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
2061 AR_MCI_INTERRUPT_RX_HW_MSG_MASK);
2063 * Clear the RTC force wake bit to allow the
2064 * mac to go to sleep.
2066 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
2068 if (ath9k_hw_mci_is_enabled(ah))
2072 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
2073 if (AR_SREV_9300_20_OR_LATER(ah))
2074 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
2077 static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
2082 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
2083 if (AR_SREV_9300_20_OR_LATER(ah)) {
2084 REG_WRITE(ah, AR_WA, ah->WARegVal);
2088 if ((REG_READ(ah, AR_RTC_STATUS) &
2089 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
2090 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
2093 if (!AR_SREV_9300_20_OR_LATER(ah))
2094 ath9k_hw_init_pll(ah, NULL);
2096 if (AR_SREV_9100(ah))
2097 REG_SET_BIT(ah, AR_RTC_RESET,
2100 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2101 AR_RTC_FORCE_WAKE_EN);
2102 if (AR_SREV_9100(ah))
2107 for (i = POWER_UP_TIME / 50; i > 0; i--) {
2108 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
2109 if (val == AR_RTC_STATUS_ON)
2112 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2113 AR_RTC_FORCE_WAKE_EN);
2116 ath_err(ath9k_hw_common(ah),
2117 "Failed to wakeup in %uus\n",
2118 POWER_UP_TIME / 20);
2122 if (ath9k_hw_mci_is_enabled(ah))
2123 ar9003_mci_set_power_awake(ah);
2125 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2130 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
2132 struct ath_common *common = ath9k_hw_common(ah);
2134 static const char *modes[] = {
2141 if (ah->power_mode == mode)
2144 ath_dbg(common, RESET, "%s -> %s\n",
2145 modes[ah->power_mode], modes[mode]);
2148 case ATH9K_PM_AWAKE:
2149 status = ath9k_hw_set_power_awake(ah);
2151 case ATH9K_PM_FULL_SLEEP:
2152 if (ath9k_hw_mci_is_enabled(ah))
2153 ar9003_mci_set_full_sleep(ah);
2155 ath9k_set_power_sleep(ah);
2156 ah->chip_fullsleep = true;
2158 case ATH9K_PM_NETWORK_SLEEP:
2159 ath9k_set_power_network_sleep(ah);
2162 ath_err(common, "Unknown power mode %u\n", mode);
2165 ah->power_mode = mode;
2168 * XXX: If this warning never comes up after a while then
2169 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
2170 * ath9k_hw_setpower() return type void.
2173 if (!(ah->ah_flags & AH_UNPLUGGED))
2174 ATH_DBG_WARN_ON_ONCE(!status);
2178 EXPORT_SYMBOL(ath9k_hw_setpower);
2180 /*******************/
2181 /* Beacon Handling */
2182 /*******************/
2184 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2188 ENABLE_REGWRITE_BUFFER(ah);
2190 switch (ah->opmode) {
2191 case NL80211_IFTYPE_ADHOC:
2192 REG_SET_BIT(ah, AR_TXCFG,
2193 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2194 case NL80211_IFTYPE_MESH_POINT:
2195 case NL80211_IFTYPE_AP:
2196 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
2197 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
2198 TU_TO_USEC(ah->config.dma_beacon_response_time));
2199 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
2200 TU_TO_USEC(ah->config.sw_beacon_response_time));
2202 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2205 ath_dbg(ath9k_hw_common(ah), BEACON,
2206 "%s: unsupported opmode: %d\n", __func__, ah->opmode);
2211 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
2212 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
2213 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
2215 REGWRITE_BUFFER_FLUSH(ah);
2217 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2219 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2221 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2222 const struct ath9k_beacon_state *bs)
2224 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2225 struct ath9k_hw_capabilities *pCap = &ah->caps;
2226 struct ath_common *common = ath9k_hw_common(ah);
2228 ENABLE_REGWRITE_BUFFER(ah);
2230 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, bs->bs_nexttbtt);
2231 REG_WRITE(ah, AR_BEACON_PERIOD, bs->bs_intval);
2232 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, bs->bs_intval);
2234 REGWRITE_BUFFER_FLUSH(ah);
2236 REG_RMW_FIELD(ah, AR_RSSI_THR,
2237 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2239 beaconintval = bs->bs_intval;
2241 if (bs->bs_sleepduration > beaconintval)
2242 beaconintval = bs->bs_sleepduration;
2244 dtimperiod = bs->bs_dtimperiod;
2245 if (bs->bs_sleepduration > dtimperiod)
2246 dtimperiod = bs->bs_sleepduration;
2248 if (beaconintval == dtimperiod)
2249 nextTbtt = bs->bs_nextdtim;
2251 nextTbtt = bs->bs_nexttbtt;
2253 ath_dbg(common, BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2254 ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
2255 ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
2256 ath_dbg(common, BEACON, "DTIM period %d\n", dtimperiod);
2258 ENABLE_REGWRITE_BUFFER(ah);
2260 REG_WRITE(ah, AR_NEXT_DTIM, bs->bs_nextdtim - SLEEP_SLOP);
2261 REG_WRITE(ah, AR_NEXT_TIM, nextTbtt - SLEEP_SLOP);
2263 REG_WRITE(ah, AR_SLEEP1,
2264 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2265 | AR_SLEEP1_ASSUME_DTIM);
2267 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2268 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2270 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2272 REG_WRITE(ah, AR_SLEEP2,
2273 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2275 REG_WRITE(ah, AR_TIM_PERIOD, beaconintval);
2276 REG_WRITE(ah, AR_DTIM_PERIOD, dtimperiod);
2278 REGWRITE_BUFFER_FLUSH(ah);
2280 REG_SET_BIT(ah, AR_TIMER_MODE,
2281 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2284 /* TSF Out of Range Threshold */
2285 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2287 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2289 /*******************/
2290 /* HW Capabilities */
2291 /*******************/
2293 static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
2295 eeprom_chainmask &= chip_chainmask;
2296 if (eeprom_chainmask)
2297 return eeprom_chainmask;
2299 return chip_chainmask;
2303 * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
2304 * @ah: the atheros hardware data structure
2306 * We enable DFS support upstream on chipsets which have passed a series
2307 * of tests. The testing requirements are going to be documented. Desired
2308 * test requirements are documented at:
2310 * http://wireless.kernel.org/en/users/Drivers/ath9k/dfs
2312 * Once a new chipset gets properly tested an individual commit can be used
2313 * to document the testing for DFS for that chipset.
2315 static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
2318 switch (ah->hw_version.macVersion) {
2319 /* for temporary testing DFS with 9280 */
2320 case AR_SREV_VERSION_9280:
2321 /* AR9580 will likely be our first target to get testing on */
2322 case AR_SREV_VERSION_9580:
2329 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2331 struct ath9k_hw_capabilities *pCap = &ah->caps;
2332 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2333 struct ath_common *common = ath9k_hw_common(ah);
2336 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
2338 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2339 regulatory->current_rd = eeval;
2341 if (ah->opmode != NL80211_IFTYPE_AP &&
2342 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2343 if (regulatory->current_rd == 0x64 ||
2344 regulatory->current_rd == 0x65)
2345 regulatory->current_rd += 5;
2346 else if (regulatory->current_rd == 0x41)
2347 regulatory->current_rd = 0x43;
2348 ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
2349 regulatory->current_rd);
2352 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2354 if (eeval & AR5416_OPFLAGS_11A) {
2355 if (ah->disable_5ghz)
2356 ath_warn(common, "disabling 5GHz band\n");
2358 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
2361 if (eeval & AR5416_OPFLAGS_11G) {
2362 if (ah->disable_2ghz)
2363 ath_warn(common, "disabling 2GHz band\n");
2365 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
2368 if ((pCap->hw_caps & (ATH9K_HW_CAP_2GHZ | ATH9K_HW_CAP_5GHZ)) == 0) {
2369 ath_err(common, "both bands are disabled\n");
2373 if (AR_SREV_9485(ah) ||
2377 pCap->chip_chainmask = 1;
2378 else if (!AR_SREV_9280_20_OR_LATER(ah))
2379 pCap->chip_chainmask = 7;
2380 else if (!AR_SREV_9300_20_OR_LATER(ah) ||
2384 pCap->chip_chainmask = 3;
2386 pCap->chip_chainmask = 7;
2388 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2390 * For AR9271 we will temporarilly uses the rx chainmax as read from
2393 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2394 !(eeval & AR5416_OPFLAGS_11A) &&
2395 !(AR_SREV_9271(ah)))
2396 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2397 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2398 else if (AR_SREV_9100(ah))
2399 pCap->rx_chainmask = 0x7;
2401 /* Use rx_chainmask from EEPROM. */
2402 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2404 pCap->tx_chainmask = fixup_chainmask(pCap->chip_chainmask, pCap->tx_chainmask);
2405 pCap->rx_chainmask = fixup_chainmask(pCap->chip_chainmask, pCap->rx_chainmask);
2406 ah->txchainmask = pCap->tx_chainmask;
2407 ah->rxchainmask = pCap->rx_chainmask;
2409 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2411 /* enable key search for every frame in an aggregate */
2412 if (AR_SREV_9300_20_OR_LATER(ah))
2413 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
2415 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
2417 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
2418 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2420 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2422 if (AR_SREV_9271(ah))
2423 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2424 else if (AR_DEVID_7010(ah))
2425 pCap->num_gpio_pins = AR7010_NUM_GPIO;
2426 else if (AR_SREV_9300_20_OR_LATER(ah))
2427 pCap->num_gpio_pins = AR9300_NUM_GPIO;
2428 else if (AR_SREV_9287_11_OR_LATER(ah))
2429 pCap->num_gpio_pins = AR9287_NUM_GPIO;
2430 else if (AR_SREV_9285_12_OR_LATER(ah))
2431 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2432 else if (AR_SREV_9280_20_OR_LATER(ah))
2433 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2435 pCap->num_gpio_pins = AR_NUM_GPIO;
2437 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
2438 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2440 pCap->rts_aggr_limit = (8 * 1024);
2442 #ifdef CONFIG_ATH9K_RFKILL
2443 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2444 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2446 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2447 ah->rfkill_polarity =
2448 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2450 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2453 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
2454 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2456 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2458 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2459 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2461 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2463 if (AR_SREV_9300_20_OR_LATER(ah)) {
2464 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
2465 if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah) && !AR_SREV_9565(ah))
2466 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
2468 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2469 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2470 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2471 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2472 pCap->txs_len = sizeof(struct ar9003_txs);
2474 pCap->tx_desc_len = sizeof(struct ath_desc);
2475 if (AR_SREV_9280_20(ah))
2476 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
2479 if (AR_SREV_9300_20_OR_LATER(ah))
2480 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
2482 if (AR_SREV_9300_20_OR_LATER(ah))
2483 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
2485 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
2486 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
2488 if (AR_SREV_9285(ah)) {
2489 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
2491 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2492 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1)) {
2493 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2494 ath_info(common, "Enable LNA combining\n");
2499 if (AR_SREV_9300_20_OR_LATER(ah)) {
2500 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
2501 pCap->hw_caps |= ATH9K_HW_CAP_APM;
2504 if (AR_SREV_9330(ah) || AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
2505 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2506 if ((ant_div_ctl1 >> 0x6) == 0x3) {
2507 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2508 ath_info(common, "Enable LNA combining\n");
2512 if (ath9k_hw_dfs_tested(ah))
2513 pCap->hw_caps |= ATH9K_HW_CAP_DFS;
2515 tx_chainmask = pCap->tx_chainmask;
2516 rx_chainmask = pCap->rx_chainmask;
2517 while (tx_chainmask || rx_chainmask) {
2518 if (tx_chainmask & BIT(0))
2519 pCap->max_txchains++;
2520 if (rx_chainmask & BIT(0))
2521 pCap->max_rxchains++;
2527 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
2528 if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
2529 pCap->hw_caps |= ATH9K_HW_CAP_MCI;
2531 if (AR_SREV_9462_20_OR_LATER(ah))
2532 pCap->hw_caps |= ATH9K_HW_CAP_RTT;
2535 if (AR_SREV_9462(ah))
2536 pCap->hw_caps |= ATH9K_HW_WOW_DEVICE_CAPABLE;
2538 if (AR_SREV_9300_20_OR_LATER(ah) &&
2539 ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
2540 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
2545 /****************************/
2546 /* GPIO / RFKILL / Antennae */
2547 /****************************/
2549 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2553 u32 gpio_shift, tmp;
2556 addr = AR_GPIO_OUTPUT_MUX3;
2558 addr = AR_GPIO_OUTPUT_MUX2;
2560 addr = AR_GPIO_OUTPUT_MUX1;
2562 gpio_shift = (gpio % 6) * 5;
2564 if (AR_SREV_9280_20_OR_LATER(ah)
2565 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2566 REG_RMW(ah, addr, (type << gpio_shift),
2567 (0x1f << gpio_shift));
2569 tmp = REG_READ(ah, addr);
2570 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2571 tmp &= ~(0x1f << gpio_shift);
2572 tmp |= (type << gpio_shift);
2573 REG_WRITE(ah, addr, tmp);
2577 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2581 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2583 if (AR_DEVID_7010(ah)) {
2585 REG_RMW(ah, AR7010_GPIO_OE,
2586 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2587 (AR7010_GPIO_OE_MASK << gpio_shift));
2591 gpio_shift = gpio << 1;
2594 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2595 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2597 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2599 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2601 #define MS_REG_READ(x, y) \
2602 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2604 if (gpio >= ah->caps.num_gpio_pins)
2607 if (AR_DEVID_7010(ah)) {
2609 val = REG_READ(ah, AR7010_GPIO_IN);
2610 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2611 } else if (AR_SREV_9300_20_OR_LATER(ah))
2612 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2613 AR_GPIO_BIT(gpio)) != 0;
2614 else if (AR_SREV_9271(ah))
2615 return MS_REG_READ(AR9271, gpio) != 0;
2616 else if (AR_SREV_9287_11_OR_LATER(ah))
2617 return MS_REG_READ(AR9287, gpio) != 0;
2618 else if (AR_SREV_9285_12_OR_LATER(ah))
2619 return MS_REG_READ(AR9285, gpio) != 0;
2620 else if (AR_SREV_9280_20_OR_LATER(ah))
2621 return MS_REG_READ(AR928X, gpio) != 0;
2623 return MS_REG_READ(AR, gpio) != 0;
2625 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2627 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2632 if (AR_DEVID_7010(ah)) {
2634 REG_RMW(ah, AR7010_GPIO_OE,
2635 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2636 (AR7010_GPIO_OE_MASK << gpio_shift));
2640 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2641 gpio_shift = 2 * gpio;
2644 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2645 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2647 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2649 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2651 if (AR_DEVID_7010(ah)) {
2653 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2658 if (AR_SREV_9271(ah))
2661 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2664 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2666 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2668 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2670 EXPORT_SYMBOL(ath9k_hw_setantenna);
2672 /*********************/
2673 /* General Operation */
2674 /*********************/
2676 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2678 u32 bits = REG_READ(ah, AR_RX_FILTER);
2679 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2681 if (phybits & AR_PHY_ERR_RADAR)
2682 bits |= ATH9K_RX_FILTER_PHYRADAR;
2683 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2684 bits |= ATH9K_RX_FILTER_PHYERR;
2688 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2690 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2694 ENABLE_REGWRITE_BUFFER(ah);
2696 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
2697 bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
2699 REG_WRITE(ah, AR_RX_FILTER, bits);
2702 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2703 phybits |= AR_PHY_ERR_RADAR;
2704 if (bits & ATH9K_RX_FILTER_PHYERR)
2705 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2706 REG_WRITE(ah, AR_PHY_ERR, phybits);
2709 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2711 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2713 REGWRITE_BUFFER_FLUSH(ah);
2715 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2717 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2719 if (ath9k_hw_mci_is_enabled(ah))
2720 ar9003_mci_bt_gain_ctrl(ah);
2722 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2725 ath9k_hw_init_pll(ah, NULL);
2726 ah->htc_reset_init = true;
2729 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2731 bool ath9k_hw_disable(struct ath_hw *ah)
2733 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2736 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2739 ath9k_hw_init_pll(ah, NULL);
2742 EXPORT_SYMBOL(ath9k_hw_disable);
2744 static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
2746 enum eeprom_param gain_param;
2748 if (IS_CHAN_2GHZ(chan))
2749 gain_param = EEP_ANTENNA_GAIN_2G;
2751 gain_param = EEP_ANTENNA_GAIN_5G;
2753 return ah->eep_ops->get_eeprom(ah, gain_param);
2756 void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
2759 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2760 struct ieee80211_channel *channel;
2761 int chan_pwr, new_pwr, max_gain;
2762 int ant_gain, ant_reduction = 0;
2767 channel = chan->chan;
2768 chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
2769 new_pwr = min_t(int, chan_pwr, reg->power_limit);
2770 max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
2772 ant_gain = get_antenna_gain(ah, chan);
2773 if (ant_gain > max_gain)
2774 ant_reduction = ant_gain - max_gain;
2776 ah->eep_ops->set_txpower(ah, chan,
2777 ath9k_regd_get_ctl(reg, chan),
2778 ant_reduction, new_pwr, test);
2781 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2783 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2784 struct ath9k_channel *chan = ah->curchan;
2785 struct ieee80211_channel *channel = chan->chan;
2787 reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
2789 channel->max_power = MAX_RATE_POWER / 2;
2791 ath9k_hw_apply_txpower(ah, chan, test);
2794 channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
2796 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2798 void ath9k_hw_setopmode(struct ath_hw *ah)
2800 ath9k_hw_set_operating_mode(ah, ah->opmode);
2802 EXPORT_SYMBOL(ath9k_hw_setopmode);
2804 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2806 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2807 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2809 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2811 void ath9k_hw_write_associd(struct ath_hw *ah)
2813 struct ath_common *common = ath9k_hw_common(ah);
2815 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2816 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2817 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2819 EXPORT_SYMBOL(ath9k_hw_write_associd);
2821 #define ATH9K_MAX_TSF_READ 10
2823 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2825 u32 tsf_lower, tsf_upper1, tsf_upper2;
2828 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2829 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2830 tsf_lower = REG_READ(ah, AR_TSF_L32);
2831 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2832 if (tsf_upper2 == tsf_upper1)
2834 tsf_upper1 = tsf_upper2;
2837 WARN_ON( i == ATH9K_MAX_TSF_READ );
2839 return (((u64)tsf_upper1 << 32) | tsf_lower);
2841 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2843 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2845 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2846 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2848 EXPORT_SYMBOL(ath9k_hw_settsf64);
2850 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2852 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2853 AH_TSF_WRITE_TIMEOUT))
2854 ath_dbg(ath9k_hw_common(ah), RESET,
2855 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2857 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2859 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2861 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, bool set)
2864 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2866 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2868 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2870 void ath9k_hw_set11nmac2040(struct ath_hw *ah, struct ath9k_channel *chan)
2874 if (IS_CHAN_HT40(chan) && !ah->config.cwm_ignore_extcca)
2875 macmode = AR_2040_JOINED_RX_CLEAR;
2879 REG_WRITE(ah, AR_2040_MODE, macmode);
2882 /* HW Generic timers configuration */
2884 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2886 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2887 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2888 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2889 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2890 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2891 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2892 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2893 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2894 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2895 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2896 AR_NDP2_TIMER_MODE, 0x0002},
2897 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2898 AR_NDP2_TIMER_MODE, 0x0004},
2899 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2900 AR_NDP2_TIMER_MODE, 0x0008},
2901 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2902 AR_NDP2_TIMER_MODE, 0x0010},
2903 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2904 AR_NDP2_TIMER_MODE, 0x0020},
2905 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2906 AR_NDP2_TIMER_MODE, 0x0040},
2907 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2908 AR_NDP2_TIMER_MODE, 0x0080}
2911 /* HW generic timer primitives */
2913 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2915 return REG_READ(ah, AR_TSF_L32);
2917 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2919 void ath9k_hw_gen_timer_start_tsf2(struct ath_hw *ah)
2921 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2923 if (timer_table->tsf2_enabled) {
2924 REG_SET_BIT(ah, AR_DIRECT_CONNECT, AR_DC_AP_STA_EN);
2925 REG_SET_BIT(ah, AR_RESET_TSF, AR_RESET_TSF2_ONCE);
2929 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2930 void (*trigger)(void *),
2931 void (*overflow)(void *),
2935 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2936 struct ath_gen_timer *timer;
2938 if ((timer_index < AR_FIRST_NDP_TIMER) ||
2939 (timer_index >= ATH_MAX_GEN_TIMER))
2942 if ((timer_index > AR_FIRST_NDP_TIMER) &&
2943 !AR_SREV_9300_20_OR_LATER(ah))
2946 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2950 /* allocate a hardware generic timer slot */
2951 timer_table->timers[timer_index] = timer;
2952 timer->index = timer_index;
2953 timer->trigger = trigger;
2954 timer->overflow = overflow;
2957 if ((timer_index > AR_FIRST_NDP_TIMER) && !timer_table->tsf2_enabled) {
2958 timer_table->tsf2_enabled = true;
2959 ath9k_hw_gen_timer_start_tsf2(ah);
2964 EXPORT_SYMBOL(ath_gen_timer_alloc);
2966 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2967 struct ath_gen_timer *timer,
2971 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2974 timer_table->timer_mask |= BIT(timer->index);
2977 * Program generic timer registers
2979 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
2981 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
2983 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2984 gen_tmr_configuration[timer->index].mode_mask);
2986 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
2988 * Starting from AR9462, each generic timer can select which tsf
2989 * to use. But we still follow the old rule, 0 - 7 use tsf and
2992 if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
2993 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
2994 (1 << timer->index));
2996 REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
2997 (1 << timer->index));
3001 mask |= SM(AR_GENTMR_BIT(timer->index),
3002 AR_IMR_S5_GENTIMER_TRIG);
3003 if (timer->overflow)
3004 mask |= SM(AR_GENTMR_BIT(timer->index),
3005 AR_IMR_S5_GENTIMER_THRESH);
3007 REG_SET_BIT(ah, AR_IMR_S5, mask);
3009 if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
3010 ah->imask |= ATH9K_INT_GENTIMER;
3011 ath9k_hw_set_interrupts(ah);
3014 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
3016 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
3018 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3020 /* Clear generic timer enable bits. */
3021 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
3022 gen_tmr_configuration[timer->index].mode_mask);
3024 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
3026 * Need to switch back to TSF if it was using TSF2.
3028 if ((timer->index >= AR_GEN_TIMER_BANK_1_LEN)) {
3029 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
3030 (1 << timer->index));
3034 /* Disable both trigger and thresh interrupt masks */
3035 REG_CLR_BIT(ah, AR_IMR_S5,
3036 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
3037 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
3039 timer_table->timer_mask &= ~BIT(timer->index);
3041 if (timer_table->timer_mask == 0) {
3042 ah->imask &= ~ATH9K_INT_GENTIMER;
3043 ath9k_hw_set_interrupts(ah);
3046 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
3048 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
3050 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3052 /* free the hardware generic timer slot */
3053 timer_table->timers[timer->index] = NULL;
3056 EXPORT_SYMBOL(ath_gen_timer_free);
3059 * Generic Timer Interrupts handling
3061 void ath_gen_timer_isr(struct ath_hw *ah)
3063 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
3064 struct ath_gen_timer *timer;
3065 unsigned long trigger_mask, thresh_mask;
3068 /* get hardware generic timer interrupt status */
3069 trigger_mask = ah->intr_gen_timer_trigger;
3070 thresh_mask = ah->intr_gen_timer_thresh;
3071 trigger_mask &= timer_table->timer_mask;
3072 thresh_mask &= timer_table->timer_mask;
3074 for_each_set_bit(index, &thresh_mask, ARRAY_SIZE(timer_table->timers)) {
3075 timer = timer_table->timers[index];
3078 if (!timer->overflow)
3081 trigger_mask &= ~BIT(index);
3082 timer->overflow(timer->arg);
3085 for_each_set_bit(index, &trigger_mask, ARRAY_SIZE(timer_table->timers)) {
3086 timer = timer_table->timers[index];
3089 if (!timer->trigger)
3091 timer->trigger(timer->arg);
3094 EXPORT_SYMBOL(ath_gen_timer_isr);
3103 } ath_mac_bb_names[] = {
3104 /* Devices with external radios */
3105 { AR_SREV_VERSION_5416_PCI, "5416" },
3106 { AR_SREV_VERSION_5416_PCIE, "5418" },
3107 { AR_SREV_VERSION_9100, "9100" },
3108 { AR_SREV_VERSION_9160, "9160" },
3109 /* Single-chip solutions */
3110 { AR_SREV_VERSION_9280, "9280" },
3111 { AR_SREV_VERSION_9285, "9285" },
3112 { AR_SREV_VERSION_9287, "9287" },
3113 { AR_SREV_VERSION_9271, "9271" },
3114 { AR_SREV_VERSION_9300, "9300" },
3115 { AR_SREV_VERSION_9330, "9330" },
3116 { AR_SREV_VERSION_9340, "9340" },
3117 { AR_SREV_VERSION_9485, "9485" },
3118 { AR_SREV_VERSION_9462, "9462" },
3119 { AR_SREV_VERSION_9550, "9550" },
3120 { AR_SREV_VERSION_9565, "9565" },
3121 { AR_SREV_VERSION_9531, "9531" },
3124 /* For devices with external radios */
3128 } ath_rf_names[] = {
3130 { AR_RAD5133_SREV_MAJOR, "5133" },
3131 { AR_RAD5122_SREV_MAJOR, "5122" },
3132 { AR_RAD2133_SREV_MAJOR, "2133" },
3133 { AR_RAD2122_SREV_MAJOR, "2122" }
3137 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3139 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3143 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3144 if (ath_mac_bb_names[i].version == mac_bb_version) {
3145 return ath_mac_bb_names[i].name;
3153 * Return the RF name. "????" is returned if the RF is unknown.
3154 * Used for devices with external radios.
3156 static const char *ath9k_hw_rf_name(u16 rf_version)
3160 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3161 if (ath_rf_names[i].version == rf_version) {
3162 return ath_rf_names[i].name;
3169 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3173 /* chipsets >= AR9280 are single-chip */
3174 if (AR_SREV_9280_20_OR_LATER(ah)) {
3175 used = scnprintf(hw_name, len,
3176 "Atheros AR%s Rev:%x",
3177 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3178 ah->hw_version.macRev);
3181 used = scnprintf(hw_name, len,
3182 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3183 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3184 ah->hw_version.macRev,
3185 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev
3186 & AR_RADIO_SREV_MAJOR)),
3187 ah->hw_version.phyRev);
3190 hw_name[used] = '\0';
3192 EXPORT_SYMBOL(ath9k_hw_name);