2 * Copyright (c) 2008-2010 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <linux/slab.h>
19 #include <asm/unaligned.h>
24 #include "ar9003_mac.h"
26 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
28 MODULE_AUTHOR("Atheros Communications");
29 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
30 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
31 MODULE_LICENSE("Dual BSD/GPL");
33 static int __init ath9k_init(void)
37 module_init(ath9k_init);
39 static void __exit ath9k_exit(void)
43 module_exit(ath9k_exit);
45 /* Private hardware callbacks */
47 static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
49 ath9k_hw_private_ops(ah)->init_cal_settings(ah);
52 static void ath9k_hw_init_mode_regs(struct ath_hw *ah)
54 ath9k_hw_private_ops(ah)->init_mode_regs(ah);
57 static bool ath9k_hw_macversion_supported(struct ath_hw *ah)
59 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
61 return priv_ops->macversion_supported(ah->hw_version.macVersion);
64 static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
65 struct ath9k_channel *chan)
67 return ath9k_hw_private_ops(ah)->compute_pll_control(ah, chan);
70 static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah)
72 if (!ath9k_hw_private_ops(ah)->init_mode_gain_regs)
75 ath9k_hw_private_ops(ah)->init_mode_gain_regs(ah);
78 static void ath9k_hw_ani_cache_ini_regs(struct ath_hw *ah)
80 /* You will not have this callback if using the old ANI */
81 if (!ath9k_hw_private_ops(ah)->ani_cache_ini_regs)
84 ath9k_hw_private_ops(ah)->ani_cache_ini_regs(ah);
87 /********************/
88 /* Helper Functions */
89 /********************/
91 static void ath9k_hw_set_clockrate(struct ath_hw *ah)
93 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
94 struct ath_common *common = ath9k_hw_common(ah);
95 unsigned int clockrate;
97 if (!ah->curchan) /* should really check for CCK instead */
98 clockrate = ATH9K_CLOCK_RATE_CCK;
99 else if (conf->channel->band == IEEE80211_BAND_2GHZ)
100 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
101 else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
102 clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
104 clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
106 if (conf_is_ht40(conf))
109 common->clockrate = clockrate;
112 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
114 struct ath_common *common = ath9k_hw_common(ah);
116 return usecs * common->clockrate;
119 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
123 BUG_ON(timeout < AH_TIME_QUANTUM);
125 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
126 if ((REG_READ(ah, reg) & mask) == val)
129 udelay(AH_TIME_QUANTUM);
132 ath_print(ath9k_hw_common(ah), ATH_DBG_ANY,
133 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
134 timeout, reg, REG_READ(ah, reg), mask, val);
138 EXPORT_SYMBOL(ath9k_hw_wait);
140 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
145 for (i = 0, retval = 0; i < n; i++) {
146 retval = (retval << 1) | (val & 1);
152 bool ath9k_get_channel_edges(struct ath_hw *ah,
156 struct ath9k_hw_capabilities *pCap = &ah->caps;
158 if (flags & CHANNEL_5GHZ) {
159 *low = pCap->low_5ghz_chan;
160 *high = pCap->high_5ghz_chan;
163 if ((flags & CHANNEL_2GHZ)) {
164 *low = pCap->low_2ghz_chan;
165 *high = pCap->high_2ghz_chan;
171 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
173 u32 frameLen, u16 rateix,
176 u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
182 case WLAN_RC_PHY_CCK:
183 phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
186 numBits = frameLen << 3;
187 txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
189 case WLAN_RC_PHY_OFDM:
190 if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
191 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
192 numBits = OFDM_PLCP_BITS + (frameLen << 3);
193 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
194 txTime = OFDM_SIFS_TIME_QUARTER
195 + OFDM_PREAMBLE_TIME_QUARTER
196 + (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
197 } else if (ah->curchan &&
198 IS_CHAN_HALF_RATE(ah->curchan)) {
199 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
200 numBits = OFDM_PLCP_BITS + (frameLen << 3);
201 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
202 txTime = OFDM_SIFS_TIME_HALF +
203 OFDM_PREAMBLE_TIME_HALF
204 + (numSymbols * OFDM_SYMBOL_TIME_HALF);
206 bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
207 numBits = OFDM_PLCP_BITS + (frameLen << 3);
208 numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
209 txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
210 + (numSymbols * OFDM_SYMBOL_TIME);
214 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
215 "Unknown phy %u (rate ix %u)\n", phy, rateix);
222 EXPORT_SYMBOL(ath9k_hw_computetxtime);
224 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
225 struct ath9k_channel *chan,
226 struct chan_centers *centers)
230 if (!IS_CHAN_HT40(chan)) {
231 centers->ctl_center = centers->ext_center =
232 centers->synth_center = chan->channel;
236 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
237 (chan->chanmode == CHANNEL_G_HT40PLUS)) {
238 centers->synth_center =
239 chan->channel + HT40_CHANNEL_CENTER_SHIFT;
242 centers->synth_center =
243 chan->channel - HT40_CHANNEL_CENTER_SHIFT;
247 centers->ctl_center =
248 centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
249 /* 25 MHz spacing is supported by hw but not on upper layers */
250 centers->ext_center =
251 centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
258 static void ath9k_hw_read_revisions(struct ath_hw *ah)
262 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
265 val = REG_READ(ah, AR_SREV);
266 ah->hw_version.macVersion =
267 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
268 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
269 ah->is_pciexpress = (val & AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
271 if (!AR_SREV_9100(ah))
272 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
274 ah->hw_version.macRev = val & AR_SREV_REVISION;
276 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
277 ah->is_pciexpress = true;
281 /************************************/
282 /* HW Attach, Detach, Init Routines */
283 /************************************/
285 static void ath9k_hw_disablepcie(struct ath_hw *ah)
287 if (AR_SREV_9100(ah))
290 ENABLE_REGWRITE_BUFFER(ah);
292 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
293 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
294 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
295 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
296 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
297 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
298 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
299 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
300 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
302 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
304 REGWRITE_BUFFER_FLUSH(ah);
307 /* This should work for all families including legacy */
308 static bool ath9k_hw_chip_test(struct ath_hw *ah)
310 struct ath_common *common = ath9k_hw_common(ah);
311 u32 regAddr[2] = { AR_STA_ID0 };
313 static const u32 patternData[4] = {
314 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
318 if (!AR_SREV_9300_20_OR_LATER(ah)) {
320 regAddr[1] = AR_PHY_BASE + (8 << 2);
324 for (i = 0; i < loop_max; i++) {
325 u32 addr = regAddr[i];
328 regHold[i] = REG_READ(ah, addr);
329 for (j = 0; j < 0x100; j++) {
330 wrData = (j << 16) | j;
331 REG_WRITE(ah, addr, wrData);
332 rdData = REG_READ(ah, addr);
333 if (rdData != wrData) {
334 ath_print(common, ATH_DBG_FATAL,
335 "address test failed "
336 "addr: 0x%08x - wr:0x%08x != "
338 addr, wrData, rdData);
342 for (j = 0; j < 4; j++) {
343 wrData = patternData[j];
344 REG_WRITE(ah, addr, wrData);
345 rdData = REG_READ(ah, addr);
346 if (wrData != rdData) {
347 ath_print(common, ATH_DBG_FATAL,
348 "address test failed "
349 "addr: 0x%08x - wr:0x%08x != "
351 addr, wrData, rdData);
355 REG_WRITE(ah, regAddr[i], regHold[i]);
362 static void ath9k_hw_init_config(struct ath_hw *ah)
366 ah->config.dma_beacon_response_time = 2;
367 ah->config.sw_beacon_response_time = 10;
368 ah->config.additional_swba_backoff = 0;
369 ah->config.ack_6mb = 0x0;
370 ah->config.cwm_ignore_extcca = 0;
371 ah->config.pcie_powersave_enable = 0;
372 ah->config.pcie_clock_req = 0;
373 ah->config.pcie_waen = 0;
374 ah->config.analog_shiftreg = 1;
375 ah->config.enable_ani = true;
377 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
378 ah->config.spurchans[i][0] = AR_NO_SPUR;
379 ah->config.spurchans[i][1] = AR_NO_SPUR;
382 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
383 ah->config.ht_enable = 1;
385 ah->config.ht_enable = 0;
387 ah->config.rx_intr_mitigation = true;
388 ah->config.pcieSerDesWrite = true;
391 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
392 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
393 * This means we use it for all AR5416 devices, and the few
394 * minor PCI AR9280 devices out there.
396 * Serialization is required because these devices do not handle
397 * well the case of two concurrent reads/writes due to the latency
398 * involved. During one read/write another read/write can be issued
399 * on another CPU while the previous read/write may still be working
400 * on our hardware, if we hit this case the hardware poops in a loop.
401 * We prevent this by serializing reads and writes.
403 * This issue is not present on PCI-Express devices or pre-AR5416
404 * devices (legacy, 802.11abg).
406 if (num_possible_cpus() > 1)
407 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
410 static void ath9k_hw_init_defaults(struct ath_hw *ah)
412 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
414 regulatory->country_code = CTRY_DEFAULT;
415 regulatory->power_limit = MAX_RATE_POWER;
416 regulatory->tp_scale = ATH9K_TP_SCALE_MAX;
418 ah->hw_version.magic = AR5416_MAGIC;
419 ah->hw_version.subvendorid = 0;
422 ah->sta_id1_defaults =
423 AR_STA_ID1_CRPT_MIC_ENABLE |
424 AR_STA_ID1_MCAST_KSRCH;
425 ah->beacon_interval = 100;
426 ah->enable_32kHz_clock = DONT_USE_32KHZ;
427 ah->slottime = (u32) -1;
428 ah->globaltxtimeout = (u32) -1;
429 ah->power_mode = ATH9K_PM_UNDEFINED;
432 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
434 struct ath_common *common = ath9k_hw_common(ah);
438 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
441 for (i = 0; i < 3; i++) {
442 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
444 common->macaddr[2 * i] = eeval >> 8;
445 common->macaddr[2 * i + 1] = eeval & 0xff;
447 if (sum == 0 || sum == 0xffff * 3)
448 return -EADDRNOTAVAIL;
453 static int ath9k_hw_post_init(struct ath_hw *ah)
457 if (!AR_SREV_9271(ah)) {
458 if (!ath9k_hw_chip_test(ah))
462 if (!AR_SREV_9300_20_OR_LATER(ah)) {
463 ecode = ar9002_hw_rf_claim(ah);
468 ecode = ath9k_hw_eeprom_init(ah);
472 ath_print(ath9k_hw_common(ah), ATH_DBG_CONFIG,
473 "Eeprom VER: %d, REV: %d\n",
474 ah->eep_ops->get_eeprom_ver(ah),
475 ah->eep_ops->get_eeprom_rev(ah));
477 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
479 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
480 "Failed allocating banks for "
485 if (!AR_SREV_9100(ah)) {
486 ath9k_hw_ani_setup(ah);
487 ath9k_hw_ani_init(ah);
493 static void ath9k_hw_attach_ops(struct ath_hw *ah)
495 if (AR_SREV_9300_20_OR_LATER(ah))
496 ar9003_hw_attach_ops(ah);
498 ar9002_hw_attach_ops(ah);
501 /* Called for all hardware families */
502 static int __ath9k_hw_init(struct ath_hw *ah)
504 struct ath_common *common = ath9k_hw_common(ah);
507 if (ah->hw_version.devid == AR5416_AR9100_DEVID)
508 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
510 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
511 ath_print(common, ATH_DBG_FATAL,
512 "Couldn't reset chip\n");
516 ath9k_hw_init_defaults(ah);
517 ath9k_hw_init_config(ah);
519 ath9k_hw_attach_ops(ah);
521 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
522 ath_print(common, ATH_DBG_FATAL, "Couldn't wakeup chip\n");
526 if (ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
527 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
528 ((AR_SREV_9160(ah) || AR_SREV_9280(ah)) &&
529 !ah->is_pciexpress)) {
530 ah->config.serialize_regmode =
533 ah->config.serialize_regmode =
538 ath_print(common, ATH_DBG_RESET, "serialize_regmode is %d\n",
539 ah->config.serialize_regmode);
541 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
542 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
544 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
546 if (!ath9k_hw_macversion_supported(ah)) {
547 ath_print(common, ATH_DBG_FATAL,
548 "Mac Chip Rev 0x%02x.%x is not supported by "
549 "this driver\n", ah->hw_version.macVersion,
550 ah->hw_version.macRev);
554 if (AR_SREV_9271(ah) || AR_SREV_9100(ah))
555 ah->is_pciexpress = false;
557 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
558 ath9k_hw_init_cal_settings(ah);
560 ah->ani_function = ATH9K_ANI_ALL;
561 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
562 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
563 if (!AR_SREV_9300_20_OR_LATER(ah))
564 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
566 ath9k_hw_init_mode_regs(ah);
569 * Read back AR_WA into a permanent copy and set bits 14 and 17.
570 * We need to do this to avoid RMW of this register. We cannot
571 * read the reg when chip is asleep.
573 ah->WARegVal = REG_READ(ah, AR_WA);
574 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
575 AR_WA_ASPM_TIMER_BASED_DISABLE);
577 if (ah->is_pciexpress)
578 ath9k_hw_configpcipowersave(ah, 0, 0);
580 ath9k_hw_disablepcie(ah);
582 if (!AR_SREV_9300_20_OR_LATER(ah))
583 ar9002_hw_cck_chan14_spread(ah);
585 r = ath9k_hw_post_init(ah);
589 ath9k_hw_init_mode_gain_regs(ah);
590 r = ath9k_hw_fill_cap_info(ah);
594 r = ath9k_hw_init_macaddr(ah);
596 ath_print(common, ATH_DBG_FATAL,
597 "Failed to initialize MAC address\n");
601 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
602 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
604 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
606 ah->bb_watchdog_timeout_ms = 25;
608 common->state = ATH_HW_INITIALIZED;
613 int ath9k_hw_init(struct ath_hw *ah)
616 struct ath_common *common = ath9k_hw_common(ah);
618 /* These are all the AR5008/AR9001/AR9002 hardware family of chipsets */
619 switch (ah->hw_version.devid) {
620 case AR5416_DEVID_PCI:
621 case AR5416_DEVID_PCIE:
622 case AR5416_AR9100_DEVID:
623 case AR9160_DEVID_PCI:
624 case AR9280_DEVID_PCI:
625 case AR9280_DEVID_PCIE:
626 case AR9285_DEVID_PCIE:
627 case AR9287_DEVID_PCI:
628 case AR9287_DEVID_PCIE:
629 case AR2427_DEVID_PCIE:
630 case AR9300_DEVID_PCIE:
633 if (common->bus_ops->ath_bus_type == ATH_USB)
635 ath_print(common, ATH_DBG_FATAL,
636 "Hardware device ID 0x%04x not supported\n",
637 ah->hw_version.devid);
641 ret = __ath9k_hw_init(ah);
643 ath_print(common, ATH_DBG_FATAL,
644 "Unable to initialize hardware; "
645 "initialization status: %d\n", ret);
651 EXPORT_SYMBOL(ath9k_hw_init);
653 static void ath9k_hw_init_qos(struct ath_hw *ah)
655 ENABLE_REGWRITE_BUFFER(ah);
657 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
658 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
660 REG_WRITE(ah, AR_QOS_NO_ACK,
661 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
662 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
663 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
665 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
666 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
667 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
668 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
669 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
671 REGWRITE_BUFFER_FLUSH(ah);
674 static void ath9k_hw_init_pll(struct ath_hw *ah,
675 struct ath9k_channel *chan)
677 u32 pll = ath9k_hw_compute_pll_control(ah, chan);
679 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
681 /* Switch the core clock for ar9271 to 117Mhz */
682 if (AR_SREV_9271(ah)) {
684 REG_WRITE(ah, 0x50040, 0x304);
687 udelay(RTC_PLL_SETTLE_DELAY);
689 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
692 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
693 enum nl80211_iftype opmode)
695 u32 imr_reg = AR_IMR_TXERR |
701 if (AR_SREV_9300_20_OR_LATER(ah)) {
702 imr_reg |= AR_IMR_RXOK_HP;
703 if (ah->config.rx_intr_mitigation)
704 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
706 imr_reg |= AR_IMR_RXOK_LP;
709 if (ah->config.rx_intr_mitigation)
710 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
712 imr_reg |= AR_IMR_RXOK;
715 if (ah->config.tx_intr_mitigation)
716 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
718 imr_reg |= AR_IMR_TXOK;
720 if (opmode == NL80211_IFTYPE_AP)
721 imr_reg |= AR_IMR_MIB;
723 ENABLE_REGWRITE_BUFFER(ah);
725 REG_WRITE(ah, AR_IMR, imr_reg);
726 ah->imrs2_reg |= AR_IMR_S2_GTT;
727 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
729 if (!AR_SREV_9100(ah)) {
730 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
731 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, AR_INTR_SYNC_DEFAULT);
732 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
735 REGWRITE_BUFFER_FLUSH(ah);
737 if (AR_SREV_9300_20_OR_LATER(ah)) {
738 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
739 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
740 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
741 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
745 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
747 u32 val = ath9k_hw_mac_to_clks(ah, us);
748 val = min(val, (u32) 0xFFFF);
749 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
752 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
754 u32 val = ath9k_hw_mac_to_clks(ah, us);
755 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
756 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
759 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
761 u32 val = ath9k_hw_mac_to_clks(ah, us);
762 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
763 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
766 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
769 ath_print(ath9k_hw_common(ah), ATH_DBG_XMIT,
770 "bad global tx timeout %u\n", tu);
771 ah->globaltxtimeout = (u32) -1;
774 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
775 ah->globaltxtimeout = tu;
780 void ath9k_hw_init_global_settings(struct ath_hw *ah)
782 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
787 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
790 if (ah->misc_mode != 0)
791 REG_WRITE(ah, AR_PCU_MISC,
792 REG_READ(ah, AR_PCU_MISC) | ah->misc_mode);
794 if (conf->channel && conf->channel->band == IEEE80211_BAND_5GHZ)
799 /* As defined by IEEE 802.11-2007 17.3.8.6 */
800 slottime = ah->slottime + 3 * ah->coverage_class;
801 acktimeout = slottime + sifstime;
804 * Workaround for early ACK timeouts, add an offset to match the
805 * initval's 64us ack timeout value.
806 * This was initially only meant to work around an issue with delayed
807 * BA frames in some implementations, but it has been found to fix ACK
808 * timeout issues in other cases as well.
810 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
811 acktimeout += 64 - sifstime - ah->slottime;
813 ath9k_hw_setslottime(ah, slottime);
814 ath9k_hw_set_ack_timeout(ah, acktimeout);
815 ath9k_hw_set_cts_timeout(ah, acktimeout);
816 if (ah->globaltxtimeout != (u32) -1)
817 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
819 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
821 void ath9k_hw_deinit(struct ath_hw *ah)
823 struct ath_common *common = ath9k_hw_common(ah);
825 if (common->state < ATH_HW_INITIALIZED)
828 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
831 ath9k_hw_rf_free_ext_banks(ah);
833 EXPORT_SYMBOL(ath9k_hw_deinit);
839 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
841 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
845 else if (IS_CHAN_G(chan))
853 /****************************************/
854 /* Reset and Channel Switching Routines */
855 /****************************************/
857 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
859 struct ath_common *common = ath9k_hw_common(ah);
862 ENABLE_REGWRITE_BUFFER(ah);
865 * set AHB_MODE not to do cacheline prefetches
867 if (!AR_SREV_9300_20_OR_LATER(ah)) {
868 regval = REG_READ(ah, AR_AHB_MODE);
869 REG_WRITE(ah, AR_AHB_MODE, regval | AR_AHB_PREFETCH_RD_EN);
873 * let mac dma reads be in 128 byte chunks
875 regval = REG_READ(ah, AR_TXCFG) & ~AR_TXCFG_DMASZ_MASK;
876 REG_WRITE(ah, AR_TXCFG, regval | AR_TXCFG_DMASZ_128B);
878 REGWRITE_BUFFER_FLUSH(ah);
881 * Restore TX Trigger Level to its pre-reset value.
882 * The initial value depends on whether aggregation is enabled, and is
883 * adjusted whenever underruns are detected.
885 if (!AR_SREV_9300_20_OR_LATER(ah))
886 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
888 ENABLE_REGWRITE_BUFFER(ah);
891 * let mac dma writes be in 128 byte chunks
893 regval = REG_READ(ah, AR_RXCFG) & ~AR_RXCFG_DMASZ_MASK;
894 REG_WRITE(ah, AR_RXCFG, regval | AR_RXCFG_DMASZ_128B);
897 * Setup receive FIFO threshold to hold off TX activities
899 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
901 if (AR_SREV_9300_20_OR_LATER(ah)) {
902 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
903 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
905 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
906 ah->caps.rx_status_len);
910 * reduce the number of usable entries in PCU TXBUF to avoid
911 * wrap around issues.
913 if (AR_SREV_9285(ah)) {
914 /* For AR9285 the number of Fifos are reduced to half.
915 * So set the usable tx buf size also to half to
916 * avoid data/delimiter underruns
918 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
919 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
920 } else if (!AR_SREV_9271(ah)) {
921 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
922 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
925 REGWRITE_BUFFER_FLUSH(ah);
927 if (AR_SREV_9300_20_OR_LATER(ah))
928 ath9k_hw_reset_txstatus_ring(ah);
931 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
935 val = REG_READ(ah, AR_STA_ID1);
936 val &= ~(AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC);
938 case NL80211_IFTYPE_AP:
939 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_STA_AP
940 | AR_STA_ID1_KSRCH_MODE);
941 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
943 case NL80211_IFTYPE_ADHOC:
944 case NL80211_IFTYPE_MESH_POINT:
945 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_ADHOC
946 | AR_STA_ID1_KSRCH_MODE);
947 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
949 case NL80211_IFTYPE_STATION:
950 case NL80211_IFTYPE_MONITOR:
951 REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_KSRCH_MODE);
956 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
957 u32 *coef_mantissa, u32 *coef_exponent)
959 u32 coef_exp, coef_man;
961 for (coef_exp = 31; coef_exp > 0; coef_exp--)
962 if ((coef_scaled >> coef_exp) & 0x1)
965 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
967 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
969 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
970 *coef_exponent = coef_exp - 16;
973 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
978 if (AR_SREV_9100(ah)) {
979 u32 val = REG_READ(ah, AR_RTC_DERIVED_CLK);
980 val &= ~AR_RTC_DERIVED_CLK_PERIOD;
981 val |= SM(1, AR_RTC_DERIVED_CLK_PERIOD);
982 REG_WRITE(ah, AR_RTC_DERIVED_CLK, val);
983 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
986 ENABLE_REGWRITE_BUFFER(ah);
988 if (AR_SREV_9300_20_OR_LATER(ah)) {
989 REG_WRITE(ah, AR_WA, ah->WARegVal);
993 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
994 AR_RTC_FORCE_WAKE_ON_INT);
996 if (AR_SREV_9100(ah)) {
997 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
998 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1000 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1002 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1003 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1005 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1008 if (!AR_SREV_9300_20_OR_LATER(ah))
1010 REG_WRITE(ah, AR_RC, val);
1012 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1013 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1015 rst_flags = AR_RTC_RC_MAC_WARM;
1016 if (type == ATH9K_RESET_COLD)
1017 rst_flags |= AR_RTC_RC_MAC_COLD;
1020 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1022 REGWRITE_BUFFER_FLUSH(ah);
1026 REG_WRITE(ah, AR_RTC_RC, 0);
1027 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1028 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
1029 "RTC stuck in MAC reset\n");
1033 if (!AR_SREV_9100(ah))
1034 REG_WRITE(ah, AR_RC, 0);
1036 if (AR_SREV_9100(ah))
1042 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1044 ENABLE_REGWRITE_BUFFER(ah);
1046 if (AR_SREV_9300_20_OR_LATER(ah)) {
1047 REG_WRITE(ah, AR_WA, ah->WARegVal);
1051 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1052 AR_RTC_FORCE_WAKE_ON_INT);
1054 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1055 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1057 REG_WRITE(ah, AR_RTC_RESET, 0);
1060 REGWRITE_BUFFER_FLUSH(ah);
1062 if (!AR_SREV_9300_20_OR_LATER(ah))
1065 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1066 REG_WRITE(ah, AR_RC, 0);
1068 REG_WRITE(ah, AR_RTC_RESET, 1);
1070 if (!ath9k_hw_wait(ah,
1075 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
1076 "RTC not waking up\n");
1080 ath9k_hw_read_revisions(ah);
1082 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1085 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1087 if (AR_SREV_9300_20_OR_LATER(ah)) {
1088 REG_WRITE(ah, AR_WA, ah->WARegVal);
1092 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1093 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1096 case ATH9K_RESET_POWER_ON:
1097 return ath9k_hw_set_reset_power_on(ah);
1098 case ATH9K_RESET_WARM:
1099 case ATH9K_RESET_COLD:
1100 return ath9k_hw_set_reset(ah, type);
1106 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1107 struct ath9k_channel *chan)
1109 if (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)) {
1110 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON))
1112 } else if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
1115 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1118 ah->chip_fullsleep = false;
1119 ath9k_hw_init_pll(ah, chan);
1120 ath9k_hw_set_rfmode(ah, chan);
1125 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1126 struct ath9k_channel *chan)
1128 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
1129 struct ath_common *common = ath9k_hw_common(ah);
1130 struct ieee80211_channel *channel = chan->chan;
1134 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1135 if (ath9k_hw_numtxpending(ah, qnum)) {
1136 ath_print(common, ATH_DBG_QUEUE,
1137 "Transmit frames pending on "
1138 "queue %d\n", qnum);
1143 if (!ath9k_hw_rfbus_req(ah)) {
1144 ath_print(common, ATH_DBG_FATAL,
1145 "Could not kill baseband RX\n");
1149 ath9k_hw_set_channel_regs(ah, chan);
1151 r = ath9k_hw_rf_set_freq(ah, chan);
1153 ath_print(common, ATH_DBG_FATAL,
1154 "Failed to set channel\n");
1157 ath9k_hw_set_clockrate(ah);
1159 ah->eep_ops->set_txpower(ah, chan,
1160 ath9k_regd_get_ctl(regulatory, chan),
1161 channel->max_antenna_gain * 2,
1162 channel->max_power * 2,
1163 min((u32) MAX_RATE_POWER,
1164 (u32) regulatory->power_limit), false);
1166 ath9k_hw_rfbus_done(ah);
1168 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1169 ath9k_hw_set_delta_slope(ah, chan);
1171 ath9k_hw_spur_mitigate_freq(ah, chan);
1176 bool ath9k_hw_check_alive(struct ath_hw *ah)
1181 if (AR_SREV_9285_12_OR_LATER(ah))
1185 reg = REG_READ(ah, AR_OBS_BUS_1);
1187 if ((reg & 0x7E7FFFEF) == 0x00702400)
1190 switch (reg & 0x7E000B00) {
1198 } while (count-- > 0);
1202 EXPORT_SYMBOL(ath9k_hw_check_alive);
1204 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1205 struct ath9k_hw_cal_data *caldata, bool bChannelChange)
1207 struct ath_common *common = ath9k_hw_common(ah);
1209 struct ath9k_channel *curchan = ah->curchan;
1215 ah->txchainmask = common->tx_chainmask;
1216 ah->rxchainmask = common->rx_chainmask;
1218 if (!ah->chip_fullsleep) {
1219 ath9k_hw_abortpcurecv(ah);
1220 if (!ath9k_hw_stopdmarecv(ah)) {
1221 ath_print(common, ATH_DBG_XMIT,
1222 "Failed to stop receive dma\n");
1223 bChannelChange = false;
1227 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1230 if (curchan && !ah->chip_fullsleep)
1231 ath9k_hw_getnf(ah, curchan);
1233 ah->caldata = caldata;
1235 (chan->channel != caldata->channel ||
1236 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1237 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1238 /* Operating channel changed, reset channel calibration data */
1239 memset(caldata, 0, sizeof(*caldata));
1240 ath9k_init_nfcal_hist_buffer(ah, chan);
1243 if (bChannelChange &&
1244 (ah->chip_fullsleep != true) &&
1245 (ah->curchan != NULL) &&
1246 (chan->channel != ah->curchan->channel) &&
1247 ((chan->channelFlags & CHANNEL_ALL) ==
1248 (ah->curchan->channelFlags & CHANNEL_ALL)) &&
1249 (!AR_SREV_9280(ah) || AR_DEVID_7010(ah))) {
1251 if (ath9k_hw_channel_change(ah, chan)) {
1252 ath9k_hw_loadnf(ah, ah->curchan);
1253 ath9k_hw_start_nfcal(ah, true);
1254 if (AR_SREV_9271(ah))
1255 ar9002_hw_load_ani_reg(ah, chan);
1260 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1261 if (saveDefAntenna == 0)
1264 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1266 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1267 if (AR_SREV_9100(ah) ||
1268 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1269 tsf = ath9k_hw_gettsf64(ah);
1271 saveLedState = REG_READ(ah, AR_CFG_LED) &
1272 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1273 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1275 ath9k_hw_mark_phy_inactive(ah);
1277 /* Only required on the first reset */
1278 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1280 AR9271_RESET_POWER_DOWN_CONTROL,
1281 AR9271_RADIO_RF_RST);
1285 if (!ath9k_hw_chip_reset(ah, chan)) {
1286 ath_print(common, ATH_DBG_FATAL, "Chip reset failed\n");
1290 /* Only required on the first reset */
1291 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1292 ah->htc_reset_init = false;
1294 AR9271_RESET_POWER_DOWN_CONTROL,
1295 AR9271_GATE_MAC_CTL);
1301 ath9k_hw_settsf64(ah, tsf);
1303 if (AR_SREV_9280_20_OR_LATER(ah))
1304 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1306 if (!AR_SREV_9300_20_OR_LATER(ah))
1307 ar9002_hw_enable_async_fifo(ah);
1309 r = ath9k_hw_process_ini(ah, chan);
1314 * Some AR91xx SoC devices frequently fail to accept TSF writes
1315 * right after the chip reset. When that happens, write a new
1316 * value after the initvals have been applied, with an offset
1317 * based on measured time difference
1319 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1321 ath9k_hw_settsf64(ah, tsf);
1324 /* Setup MFP options for CCMP */
1325 if (AR_SREV_9280_20_OR_LATER(ah)) {
1326 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1327 * frames when constructing CCMP AAD. */
1328 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1330 ah->sw_mgmt_crypto = false;
1331 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1332 /* Disable hardware crypto for management frames */
1333 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1334 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1335 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1336 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1337 ah->sw_mgmt_crypto = true;
1339 ah->sw_mgmt_crypto = true;
1341 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1342 ath9k_hw_set_delta_slope(ah, chan);
1344 ath9k_hw_spur_mitigate_freq(ah, chan);
1345 ah->eep_ops->set_board_values(ah, chan);
1347 ath9k_hw_set_operating_mode(ah, ah->opmode);
1349 ENABLE_REGWRITE_BUFFER(ah);
1351 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1352 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1354 | AR_STA_ID1_RTS_USE_DEF
1356 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1357 | ah->sta_id1_defaults);
1358 ath_hw_setbssidmask(common);
1359 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1360 ath9k_hw_write_associd(ah);
1361 REG_WRITE(ah, AR_ISR, ~0);
1362 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1364 REGWRITE_BUFFER_FLUSH(ah);
1366 r = ath9k_hw_rf_set_freq(ah, chan);
1370 ath9k_hw_set_clockrate(ah);
1372 ENABLE_REGWRITE_BUFFER(ah);
1374 for (i = 0; i < AR_NUM_DCU; i++)
1375 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1377 REGWRITE_BUFFER_FLUSH(ah);
1380 for (i = 0; i < ah->caps.total_queues; i++)
1381 ath9k_hw_resettxqueue(ah, i);
1383 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1384 ath9k_hw_ani_cache_ini_regs(ah);
1385 ath9k_hw_init_qos(ah);
1387 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1388 ath9k_enable_rfkill(ah);
1390 ath9k_hw_init_global_settings(ah);
1392 if (!AR_SREV_9300_20_OR_LATER(ah)) {
1393 ar9002_hw_update_async_fifo(ah);
1394 ar9002_hw_enable_wep_aggregation(ah);
1397 REG_WRITE(ah, AR_STA_ID1,
1398 REG_READ(ah, AR_STA_ID1) | AR_STA_ID1_PRESERVE_SEQNUM);
1400 ath9k_hw_set_dma(ah);
1402 REG_WRITE(ah, AR_OBS, 8);
1404 if (ah->config.rx_intr_mitigation) {
1405 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1406 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1409 if (ah->config.tx_intr_mitigation) {
1410 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1411 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1414 ath9k_hw_init_bb(ah, chan);
1416 if (!ath9k_hw_init_cal(ah, chan))
1419 ENABLE_REGWRITE_BUFFER(ah);
1421 ath9k_hw_restore_chainmask(ah);
1422 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1424 REGWRITE_BUFFER_FLUSH(ah);
1427 * For big endian systems turn on swapping for descriptors
1429 if (AR_SREV_9100(ah)) {
1431 mask = REG_READ(ah, AR_CFG);
1432 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1433 ath_print(common, ATH_DBG_RESET,
1434 "CFG Byte Swap Set 0x%x\n", mask);
1437 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1438 REG_WRITE(ah, AR_CFG, mask);
1439 ath_print(common, ATH_DBG_RESET,
1440 "Setting CFG 0x%x\n", REG_READ(ah, AR_CFG));
1443 if (common->bus_ops->ath_bus_type == ATH_USB) {
1444 /* Configure AR9271 target WLAN */
1445 if (AR_SREV_9271(ah))
1446 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1448 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1452 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1456 if (ah->btcoex_hw.enabled)
1457 ath9k_hw_btcoex_enable(ah);
1459 if (AR_SREV_9300_20_OR_LATER(ah))
1460 ar9003_hw_bb_watchdog_config(ah);
1464 EXPORT_SYMBOL(ath9k_hw_reset);
1466 /******************************/
1467 /* Power Management (Chipset) */
1468 /******************************/
1471 * Notify Power Mgt is disabled in self-generated frames.
1472 * If requested, force chip to sleep.
1474 static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
1476 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1479 * Clear the RTC force wake bit to allow the
1480 * mac to go to sleep.
1482 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1483 AR_RTC_FORCE_WAKE_EN);
1484 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1485 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
1487 /* Shutdown chip. Active low */
1488 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah))
1489 REG_CLR_BIT(ah, (AR_RTC_RESET),
1493 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
1494 if (AR_SREV_9300_20_OR_LATER(ah))
1495 REG_WRITE(ah, AR_WA,
1496 ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1500 * Notify Power Management is enabled in self-generating
1501 * frames. If request, set power mode of chip to
1502 * auto/normal. Duration in units of 128us (1/8 TU).
1504 static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip)
1506 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1508 struct ath9k_hw_capabilities *pCap = &ah->caps;
1510 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1511 /* Set WakeOnInterrupt bit; clear ForceWake bit */
1512 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1513 AR_RTC_FORCE_WAKE_ON_INT);
1516 * Clear the RTC force wake bit to allow the
1517 * mac to go to sleep.
1519 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1520 AR_RTC_FORCE_WAKE_EN);
1524 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
1525 if (AR_SREV_9300_20_OR_LATER(ah))
1526 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1529 static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
1534 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
1535 if (AR_SREV_9300_20_OR_LATER(ah)) {
1536 REG_WRITE(ah, AR_WA, ah->WARegVal);
1541 if ((REG_READ(ah, AR_RTC_STATUS) &
1542 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
1543 if (ath9k_hw_set_reset_reg(ah,
1544 ATH9K_RESET_POWER_ON) != true) {
1547 if (!AR_SREV_9300_20_OR_LATER(ah))
1548 ath9k_hw_init_pll(ah, NULL);
1550 if (AR_SREV_9100(ah))
1551 REG_SET_BIT(ah, AR_RTC_RESET,
1554 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1555 AR_RTC_FORCE_WAKE_EN);
1558 for (i = POWER_UP_TIME / 50; i > 0; i--) {
1559 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
1560 if (val == AR_RTC_STATUS_ON)
1563 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
1564 AR_RTC_FORCE_WAKE_EN);
1567 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
1568 "Failed to wakeup in %uus\n",
1569 POWER_UP_TIME / 20);
1574 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1579 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
1581 struct ath_common *common = ath9k_hw_common(ah);
1582 int status = true, setChip = true;
1583 static const char *modes[] = {
1590 if (ah->power_mode == mode)
1593 ath_print(common, ATH_DBG_RESET, "%s -> %s\n",
1594 modes[ah->power_mode], modes[mode]);
1597 case ATH9K_PM_AWAKE:
1598 status = ath9k_hw_set_power_awake(ah, setChip);
1600 case ATH9K_PM_FULL_SLEEP:
1601 ath9k_set_power_sleep(ah, setChip);
1602 ah->chip_fullsleep = true;
1604 case ATH9K_PM_NETWORK_SLEEP:
1605 ath9k_set_power_network_sleep(ah, setChip);
1608 ath_print(common, ATH_DBG_FATAL,
1609 "Unknown power mode %u\n", mode);
1612 ah->power_mode = mode;
1616 EXPORT_SYMBOL(ath9k_hw_setpower);
1618 /*******************/
1619 /* Beacon Handling */
1620 /*******************/
1622 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
1626 ah->beacon_interval = beacon_period;
1628 ENABLE_REGWRITE_BUFFER(ah);
1630 switch (ah->opmode) {
1631 case NL80211_IFTYPE_STATION:
1632 case NL80211_IFTYPE_MONITOR:
1633 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(next_beacon));
1634 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, 0xffff);
1635 REG_WRITE(ah, AR_NEXT_SWBA, 0x7ffff);
1636 flags |= AR_TBTT_TIMER_EN;
1638 case NL80211_IFTYPE_ADHOC:
1639 case NL80211_IFTYPE_MESH_POINT:
1640 REG_SET_BIT(ah, AR_TXCFG,
1641 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
1642 REG_WRITE(ah, AR_NEXT_NDP_TIMER,
1643 TU_TO_USEC(next_beacon +
1644 (ah->atim_window ? ah->
1646 flags |= AR_NDP_TIMER_EN;
1647 case NL80211_IFTYPE_AP:
1648 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(next_beacon));
1649 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT,
1650 TU_TO_USEC(next_beacon -
1652 dma_beacon_response_time));
1653 REG_WRITE(ah, AR_NEXT_SWBA,
1654 TU_TO_USEC(next_beacon -
1656 sw_beacon_response_time));
1658 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
1661 ath_print(ath9k_hw_common(ah), ATH_DBG_BEACON,
1662 "%s: unsupported opmode: %d\n",
1663 __func__, ah->opmode);
1668 REG_WRITE(ah, AR_BEACON_PERIOD, TU_TO_USEC(beacon_period));
1669 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, TU_TO_USEC(beacon_period));
1670 REG_WRITE(ah, AR_SWBA_PERIOD, TU_TO_USEC(beacon_period));
1671 REG_WRITE(ah, AR_NDP_PERIOD, TU_TO_USEC(beacon_period));
1673 REGWRITE_BUFFER_FLUSH(ah);
1675 beacon_period &= ~ATH9K_BEACON_ENA;
1676 if (beacon_period & ATH9K_BEACON_RESET_TSF) {
1677 ath9k_hw_reset_tsf(ah);
1680 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
1682 EXPORT_SYMBOL(ath9k_hw_beaconinit);
1684 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
1685 const struct ath9k_beacon_state *bs)
1687 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
1688 struct ath9k_hw_capabilities *pCap = &ah->caps;
1689 struct ath_common *common = ath9k_hw_common(ah);
1691 ENABLE_REGWRITE_BUFFER(ah);
1693 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
1695 REG_WRITE(ah, AR_BEACON_PERIOD,
1696 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
1697 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
1698 TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
1700 REGWRITE_BUFFER_FLUSH(ah);
1702 REG_RMW_FIELD(ah, AR_RSSI_THR,
1703 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
1705 beaconintval = bs->bs_intval & ATH9K_BEACON_PERIOD;
1707 if (bs->bs_sleepduration > beaconintval)
1708 beaconintval = bs->bs_sleepduration;
1710 dtimperiod = bs->bs_dtimperiod;
1711 if (bs->bs_sleepduration > dtimperiod)
1712 dtimperiod = bs->bs_sleepduration;
1714 if (beaconintval == dtimperiod)
1715 nextTbtt = bs->bs_nextdtim;
1717 nextTbtt = bs->bs_nexttbtt;
1719 ath_print(common, ATH_DBG_BEACON, "next DTIM %d\n", bs->bs_nextdtim);
1720 ath_print(common, ATH_DBG_BEACON, "next beacon %d\n", nextTbtt);
1721 ath_print(common, ATH_DBG_BEACON, "beacon period %d\n", beaconintval);
1722 ath_print(common, ATH_DBG_BEACON, "DTIM period %d\n", dtimperiod);
1724 ENABLE_REGWRITE_BUFFER(ah);
1726 REG_WRITE(ah, AR_NEXT_DTIM,
1727 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
1728 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
1730 REG_WRITE(ah, AR_SLEEP1,
1731 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
1732 | AR_SLEEP1_ASSUME_DTIM);
1734 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
1735 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
1737 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
1739 REG_WRITE(ah, AR_SLEEP2,
1740 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
1742 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
1743 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
1745 REGWRITE_BUFFER_FLUSH(ah);
1747 REG_SET_BIT(ah, AR_TIMER_MODE,
1748 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
1751 /* TSF Out of Range Threshold */
1752 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
1754 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
1756 /*******************/
1757 /* HW Capabilities */
1758 /*******************/
1760 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
1762 struct ath9k_hw_capabilities *pCap = &ah->caps;
1763 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
1764 struct ath_common *common = ath9k_hw_common(ah);
1765 struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
1767 u16 capField = 0, eeval;
1770 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
1771 regulatory->current_rd = eeval;
1773 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_1);
1774 if (AR_SREV_9285_12_OR_LATER(ah))
1775 eeval |= AR9285_RDEXT_DEFAULT;
1776 regulatory->current_rd_ext = eeval;
1778 capField = ah->eep_ops->get_eeprom(ah, EEP_OP_CAP);
1780 if (ah->opmode != NL80211_IFTYPE_AP &&
1781 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
1782 if (regulatory->current_rd == 0x64 ||
1783 regulatory->current_rd == 0x65)
1784 regulatory->current_rd += 5;
1785 else if (regulatory->current_rd == 0x41)
1786 regulatory->current_rd = 0x43;
1787 ath_print(common, ATH_DBG_REGULATORY,
1788 "regdomain mapped to 0x%x\n", regulatory->current_rd);
1791 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
1792 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
1793 ath_print(common, ATH_DBG_FATAL,
1794 "no band has been marked as supported in EEPROM.\n");
1798 if (eeval & AR5416_OPFLAGS_11A)
1799 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
1801 if (eeval & AR5416_OPFLAGS_11G)
1802 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
1804 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
1806 * For AR9271 we will temporarilly uses the rx chainmax as read from
1809 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
1810 !(eeval & AR5416_OPFLAGS_11A) &&
1811 !(AR_SREV_9271(ah)))
1812 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
1813 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
1815 /* Use rx_chainmask from EEPROM. */
1816 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
1818 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
1820 /* enable key search for every frame in an aggregate */
1821 if (AR_SREV_9300_20_OR_LATER(ah))
1822 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
1824 pCap->low_2ghz_chan = 2312;
1825 pCap->high_2ghz_chan = 2732;
1827 pCap->low_5ghz_chan = 4920;
1828 pCap->high_5ghz_chan = 6100;
1830 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
1832 if (ah->config.ht_enable)
1833 pCap->hw_caps |= ATH9K_HW_CAP_HT;
1835 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
1837 if (capField & AR_EEPROM_EEPCAP_MAXQCU)
1838 pCap->total_queues =
1839 MS(capField, AR_EEPROM_EEPCAP_MAXQCU);
1841 pCap->total_queues = ATH9K_NUM_TX_QUEUES;
1843 if (capField & AR_EEPROM_EEPCAP_KC_ENTRIES)
1844 pCap->keycache_size =
1845 1 << MS(capField, AR_EEPROM_EEPCAP_KC_ENTRIES);
1847 pCap->keycache_size = AR_KEYTABLE_SIZE;
1849 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
1850 pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD >> 1;
1852 pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD;
1854 if (AR_SREV_9271(ah))
1855 pCap->num_gpio_pins = AR9271_NUM_GPIO;
1856 else if (AR_DEVID_7010(ah))
1857 pCap->num_gpio_pins = AR7010_NUM_GPIO;
1858 else if (AR_SREV_9285_12_OR_LATER(ah))
1859 pCap->num_gpio_pins = AR9285_NUM_GPIO;
1860 else if (AR_SREV_9280_20_OR_LATER(ah))
1861 pCap->num_gpio_pins = AR928X_NUM_GPIO;
1863 pCap->num_gpio_pins = AR_NUM_GPIO;
1865 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah)) {
1866 pCap->hw_caps |= ATH9K_HW_CAP_CST;
1867 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
1869 pCap->rts_aggr_limit = (8 * 1024);
1872 pCap->hw_caps |= ATH9K_HW_CAP_ENHANCEDPM;
1874 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1875 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
1876 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
1878 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
1879 ah->rfkill_polarity =
1880 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
1882 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
1885 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
1886 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
1888 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
1890 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
1891 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
1893 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
1895 if (regulatory->current_rd_ext & (1 << REG_EXT_JAPAN_MIDBAND)) {
1897 AR_EEPROM_EEREGCAP_EN_KK_NEW_11A |
1898 AR_EEPROM_EEREGCAP_EN_KK_U1_EVEN |
1899 AR_EEPROM_EEREGCAP_EN_KK_U2 |
1900 AR_EEPROM_EEREGCAP_EN_KK_MIDBAND;
1903 AR_EEPROM_EEREGCAP_EN_KK_NEW_11A |
1904 AR_EEPROM_EEREGCAP_EN_KK_U1_EVEN;
1907 /* Advertise midband for AR5416 with FCC midband set in eeprom */
1908 if (regulatory->current_rd_ext & (1 << REG_EXT_FCC_MIDBAND) &&
1910 pCap->reg_cap |= AR_EEPROM_EEREGCAP_EN_FCC_MIDBAND;
1912 pCap->num_antcfg_5ghz =
1913 ah->eep_ops->get_num_ant_config(ah, ATH9K_HAL_FREQ_BAND_5GHZ);
1914 pCap->num_antcfg_2ghz =
1915 ah->eep_ops->get_num_ant_config(ah, ATH9K_HAL_FREQ_BAND_2GHZ);
1917 if (AR_SREV_9280_20_OR_LATER(ah) &&
1918 ath9k_hw_btcoex_supported(ah)) {
1919 btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO;
1920 btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO;
1922 if (AR_SREV_9285(ah)) {
1923 btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
1924 btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO;
1926 btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
1929 btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
1932 if (AR_SREV_9300_20_OR_LATER(ah)) {
1933 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_LDPC |
1934 ATH9K_HW_CAP_FASTCLOCK;
1935 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
1936 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
1937 pCap->rx_status_len = sizeof(struct ar9003_rxs);
1938 pCap->tx_desc_len = sizeof(struct ar9003_txc);
1939 pCap->txs_len = sizeof(struct ar9003_txs);
1940 if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
1941 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
1943 pCap->tx_desc_len = sizeof(struct ath_desc);
1944 if (AR_SREV_9280_20(ah) &&
1945 ((ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV) <=
1946 AR5416_EEP_MINOR_VER_16) ||
1947 ah->eep_ops->get_eeprom(ah, EEP_FSTCLK_5G)))
1948 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
1951 if (AR_SREV_9300_20_OR_LATER(ah))
1952 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
1954 if (AR_SREV_9300_20_OR_LATER(ah))
1955 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
1957 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
1958 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
1960 if (AR_SREV_9285(ah))
1961 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
1963 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
1964 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
1965 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
1971 /****************************/
1972 /* GPIO / RFKILL / Antennae */
1973 /****************************/
1975 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
1979 u32 gpio_shift, tmp;
1982 addr = AR_GPIO_OUTPUT_MUX3;
1984 addr = AR_GPIO_OUTPUT_MUX2;
1986 addr = AR_GPIO_OUTPUT_MUX1;
1988 gpio_shift = (gpio % 6) * 5;
1990 if (AR_SREV_9280_20_OR_LATER(ah)
1991 || (addr != AR_GPIO_OUTPUT_MUX1)) {
1992 REG_RMW(ah, addr, (type << gpio_shift),
1993 (0x1f << gpio_shift));
1995 tmp = REG_READ(ah, addr);
1996 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
1997 tmp &= ~(0x1f << gpio_shift);
1998 tmp |= (type << gpio_shift);
1999 REG_WRITE(ah, addr, tmp);
2003 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2007 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2009 if (AR_DEVID_7010(ah)) {
2011 REG_RMW(ah, AR7010_GPIO_OE,
2012 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2013 (AR7010_GPIO_OE_MASK << gpio_shift));
2017 gpio_shift = gpio << 1;
2020 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2021 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2023 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2025 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2027 #define MS_REG_READ(x, y) \
2028 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2030 if (gpio >= ah->caps.num_gpio_pins)
2033 if (AR_DEVID_7010(ah)) {
2035 val = REG_READ(ah, AR7010_GPIO_IN);
2036 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2037 } else if (AR_SREV_9300_20_OR_LATER(ah))
2038 return MS_REG_READ(AR9300, gpio) != 0;
2039 else if (AR_SREV_9271(ah))
2040 return MS_REG_READ(AR9271, gpio) != 0;
2041 else if (AR_SREV_9287_11_OR_LATER(ah))
2042 return MS_REG_READ(AR9287, gpio) != 0;
2043 else if (AR_SREV_9285_12_OR_LATER(ah))
2044 return MS_REG_READ(AR9285, gpio) != 0;
2045 else if (AR_SREV_9280_20_OR_LATER(ah))
2046 return MS_REG_READ(AR928X, gpio) != 0;
2048 return MS_REG_READ(AR, gpio) != 0;
2050 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2052 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2057 if (AR_DEVID_7010(ah)) {
2059 REG_RMW(ah, AR7010_GPIO_OE,
2060 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2061 (AR7010_GPIO_OE_MASK << gpio_shift));
2065 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2066 gpio_shift = 2 * gpio;
2069 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2070 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2072 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2074 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2076 if (AR_DEVID_7010(ah)) {
2078 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2083 if (AR_SREV_9271(ah))
2086 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2089 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2091 u32 ath9k_hw_getdefantenna(struct ath_hw *ah)
2093 return REG_READ(ah, AR_DEF_ANTENNA) & 0x7;
2095 EXPORT_SYMBOL(ath9k_hw_getdefantenna);
2097 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2099 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2101 EXPORT_SYMBOL(ath9k_hw_setantenna);
2103 /*********************/
2104 /* General Operation */
2105 /*********************/
2107 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2109 u32 bits = REG_READ(ah, AR_RX_FILTER);
2110 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2112 if (phybits & AR_PHY_ERR_RADAR)
2113 bits |= ATH9K_RX_FILTER_PHYRADAR;
2114 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2115 bits |= ATH9K_RX_FILTER_PHYERR;
2119 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2121 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2125 ENABLE_REGWRITE_BUFFER(ah);
2127 REG_WRITE(ah, AR_RX_FILTER, bits);
2130 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2131 phybits |= AR_PHY_ERR_RADAR;
2132 if (bits & ATH9K_RX_FILTER_PHYERR)
2133 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2134 REG_WRITE(ah, AR_PHY_ERR, phybits);
2137 REG_WRITE(ah, AR_RXCFG,
2138 REG_READ(ah, AR_RXCFG) | AR_RXCFG_ZLFDMA);
2140 REG_WRITE(ah, AR_RXCFG,
2141 REG_READ(ah, AR_RXCFG) & ~AR_RXCFG_ZLFDMA);
2143 REGWRITE_BUFFER_FLUSH(ah);
2145 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2147 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2149 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2152 ath9k_hw_init_pll(ah, NULL);
2155 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2157 bool ath9k_hw_disable(struct ath_hw *ah)
2159 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2162 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2165 ath9k_hw_init_pll(ah, NULL);
2168 EXPORT_SYMBOL(ath9k_hw_disable);
2170 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2172 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2173 struct ath9k_channel *chan = ah->curchan;
2174 struct ieee80211_channel *channel = chan->chan;
2176 regulatory->power_limit = min(limit, (u32) MAX_RATE_POWER);
2178 ah->eep_ops->set_txpower(ah, chan,
2179 ath9k_regd_get_ctl(regulatory, chan),
2180 channel->max_antenna_gain * 2,
2181 channel->max_power * 2,
2182 min((u32) MAX_RATE_POWER,
2183 (u32) regulatory->power_limit), test);
2185 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2187 void ath9k_hw_setopmode(struct ath_hw *ah)
2189 ath9k_hw_set_operating_mode(ah, ah->opmode);
2191 EXPORT_SYMBOL(ath9k_hw_setopmode);
2193 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2195 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2196 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2198 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2200 void ath9k_hw_write_associd(struct ath_hw *ah)
2202 struct ath_common *common = ath9k_hw_common(ah);
2204 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2205 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2206 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2208 EXPORT_SYMBOL(ath9k_hw_write_associd);
2210 #define ATH9K_MAX_TSF_READ 10
2212 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2214 u32 tsf_lower, tsf_upper1, tsf_upper2;
2217 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2218 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2219 tsf_lower = REG_READ(ah, AR_TSF_L32);
2220 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2221 if (tsf_upper2 == tsf_upper1)
2223 tsf_upper1 = tsf_upper2;
2226 WARN_ON( i == ATH9K_MAX_TSF_READ );
2228 return (((u64)tsf_upper1 << 32) | tsf_lower);
2230 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2232 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2234 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2235 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2237 EXPORT_SYMBOL(ath9k_hw_settsf64);
2239 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2241 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2242 AH_TSF_WRITE_TIMEOUT))
2243 ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
2244 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2246 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2248 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2250 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)
2253 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2255 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2257 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2259 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2261 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2264 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2265 macmode = AR_2040_JOINED_RX_CLEAR;
2269 REG_WRITE(ah, AR_2040_MODE, macmode);
2272 /* HW Generic timers configuration */
2274 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2276 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2277 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2278 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2279 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2280 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2281 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2282 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2283 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2284 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2285 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2286 AR_NDP2_TIMER_MODE, 0x0002},
2287 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2288 AR_NDP2_TIMER_MODE, 0x0004},
2289 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2290 AR_NDP2_TIMER_MODE, 0x0008},
2291 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2292 AR_NDP2_TIMER_MODE, 0x0010},
2293 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2294 AR_NDP2_TIMER_MODE, 0x0020},
2295 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2296 AR_NDP2_TIMER_MODE, 0x0040},
2297 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2298 AR_NDP2_TIMER_MODE, 0x0080}
2301 /* HW generic timer primitives */
2303 /* compute and clear index of rightmost 1 */
2304 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2314 return timer_table->gen_timer_index[b];
2317 static u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2319 return REG_READ(ah, AR_TSF_L32);
2322 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2323 void (*trigger)(void *),
2324 void (*overflow)(void *),
2328 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2329 struct ath_gen_timer *timer;
2331 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2333 if (timer == NULL) {
2334 ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
2335 "Failed to allocate memory"
2336 "for hw timer[%d]\n", timer_index);
2340 /* allocate a hardware generic timer slot */
2341 timer_table->timers[timer_index] = timer;
2342 timer->index = timer_index;
2343 timer->trigger = trigger;
2344 timer->overflow = overflow;
2349 EXPORT_SYMBOL(ath_gen_timer_alloc);
2351 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2352 struct ath_gen_timer *timer,
2356 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2359 BUG_ON(!timer_period);
2361 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
2363 tsf = ath9k_hw_gettsf32(ah);
2365 ath_print(ath9k_hw_common(ah), ATH_DBG_HWTIMER,
2366 "curent tsf %x period %x"
2367 "timer_next %x\n", tsf, timer_period, timer_next);
2370 * Pull timer_next forward if the current TSF already passed it
2371 * because of software latency
2373 if (timer_next < tsf)
2374 timer_next = tsf + timer_period;
2377 * Program generic timer registers
2379 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
2381 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
2383 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2384 gen_tmr_configuration[timer->index].mode_mask);
2386 /* Enable both trigger and thresh interrupt masks */
2387 REG_SET_BIT(ah, AR_IMR_S5,
2388 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2389 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2391 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
2393 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
2395 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2397 if ((timer->index < AR_FIRST_NDP_TIMER) ||
2398 (timer->index >= ATH_MAX_GEN_TIMER)) {
2402 /* Clear generic timer enable bits. */
2403 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2404 gen_tmr_configuration[timer->index].mode_mask);
2406 /* Disable both trigger and thresh interrupt masks */
2407 REG_CLR_BIT(ah, AR_IMR_S5,
2408 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2409 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2411 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
2413 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
2415 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
2417 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2419 /* free the hardware generic timer slot */
2420 timer_table->timers[timer->index] = NULL;
2423 EXPORT_SYMBOL(ath_gen_timer_free);
2426 * Generic Timer Interrupts handling
2428 void ath_gen_timer_isr(struct ath_hw *ah)
2430 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2431 struct ath_gen_timer *timer;
2432 struct ath_common *common = ath9k_hw_common(ah);
2433 u32 trigger_mask, thresh_mask, index;
2435 /* get hardware generic timer interrupt status */
2436 trigger_mask = ah->intr_gen_timer_trigger;
2437 thresh_mask = ah->intr_gen_timer_thresh;
2438 trigger_mask &= timer_table->timer_mask.val;
2439 thresh_mask &= timer_table->timer_mask.val;
2441 trigger_mask &= ~thresh_mask;
2443 while (thresh_mask) {
2444 index = rightmost_index(timer_table, &thresh_mask);
2445 timer = timer_table->timers[index];
2447 ath_print(common, ATH_DBG_HWTIMER,
2448 "TSF overflow for Gen timer %d\n", index);
2449 timer->overflow(timer->arg);
2452 while (trigger_mask) {
2453 index = rightmost_index(timer_table, &trigger_mask);
2454 timer = timer_table->timers[index];
2456 ath_print(common, ATH_DBG_HWTIMER,
2457 "Gen timer[%d] trigger\n", index);
2458 timer->trigger(timer->arg);
2461 EXPORT_SYMBOL(ath_gen_timer_isr);
2467 void ath9k_hw_htc_resetinit(struct ath_hw *ah)
2469 ah->htc_reset_init = true;
2471 EXPORT_SYMBOL(ath9k_hw_htc_resetinit);
2476 } ath_mac_bb_names[] = {
2477 /* Devices with external radios */
2478 { AR_SREV_VERSION_5416_PCI, "5416" },
2479 { AR_SREV_VERSION_5416_PCIE, "5418" },
2480 { AR_SREV_VERSION_9100, "9100" },
2481 { AR_SREV_VERSION_9160, "9160" },
2482 /* Single-chip solutions */
2483 { AR_SREV_VERSION_9280, "9280" },
2484 { AR_SREV_VERSION_9285, "9285" },
2485 { AR_SREV_VERSION_9287, "9287" },
2486 { AR_SREV_VERSION_9271, "9271" },
2487 { AR_SREV_VERSION_9300, "9300" },
2490 /* For devices with external radios */
2494 } ath_rf_names[] = {
2496 { AR_RAD5133_SREV_MAJOR, "5133" },
2497 { AR_RAD5122_SREV_MAJOR, "5122" },
2498 { AR_RAD2133_SREV_MAJOR, "2133" },
2499 { AR_RAD2122_SREV_MAJOR, "2122" }
2503 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
2505 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
2509 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
2510 if (ath_mac_bb_names[i].version == mac_bb_version) {
2511 return ath_mac_bb_names[i].name;
2519 * Return the RF name. "????" is returned if the RF is unknown.
2520 * Used for devices with external radios.
2522 static const char *ath9k_hw_rf_name(u16 rf_version)
2526 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
2527 if (ath_rf_names[i].version == rf_version) {
2528 return ath_rf_names[i].name;
2535 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
2539 /* chipsets >= AR9280 are single-chip */
2540 if (AR_SREV_9280_20_OR_LATER(ah)) {
2541 used = snprintf(hw_name, len,
2542 "Atheros AR%s Rev:%x",
2543 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
2544 ah->hw_version.macRev);
2547 used = snprintf(hw_name, len,
2548 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
2549 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
2550 ah->hw_version.macRev,
2551 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
2552 AR_RADIO_SREV_MAJOR)),
2553 ah->hw_version.phyRev);
2556 hw_name[used] = '\0';
2558 EXPORT_SYMBOL(ath9k_hw_name);