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 <asm/unaligned.h>
25 #include "ar9003_mac.h"
26 #include "ar9003_mci.h"
28 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
30 MODULE_AUTHOR("Atheros Communications");
31 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
32 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
33 MODULE_LICENSE("Dual BSD/GPL");
35 static int __init ath9k_init(void)
39 module_init(ath9k_init);
41 static void __exit ath9k_exit(void)
45 module_exit(ath9k_exit);
47 /* Private hardware callbacks */
49 static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
51 ath9k_hw_private_ops(ah)->init_cal_settings(ah);
54 static void ath9k_hw_init_mode_regs(struct ath_hw *ah)
56 ath9k_hw_private_ops(ah)->init_mode_regs(ah);
59 static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
60 struct ath9k_channel *chan)
62 return ath9k_hw_private_ops(ah)->compute_pll_control(ah, chan);
65 static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah)
67 if (!ath9k_hw_private_ops(ah)->init_mode_gain_regs)
70 ath9k_hw_private_ops(ah)->init_mode_gain_regs(ah);
73 static void ath9k_hw_ani_cache_ini_regs(struct ath_hw *ah)
75 /* You will not have this callback if using the old ANI */
76 if (!ath9k_hw_private_ops(ah)->ani_cache_ini_regs)
79 ath9k_hw_private_ops(ah)->ani_cache_ini_regs(ah);
82 /********************/
83 /* Helper Functions */
84 /********************/
86 static void ath9k_hw_set_clockrate(struct ath_hw *ah)
88 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
89 struct ath_common *common = ath9k_hw_common(ah);
90 unsigned int clockrate;
92 /* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
93 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
95 else if (!ah->curchan) /* should really check for CCK instead */
96 clockrate = ATH9K_CLOCK_RATE_CCK;
97 else if (conf->channel->band == IEEE80211_BAND_2GHZ)
98 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
99 else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
100 clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
102 clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
104 if (conf_is_ht40(conf))
108 if (IS_CHAN_HALF_RATE(ah->curchan))
110 if (IS_CHAN_QUARTER_RATE(ah->curchan))
114 common->clockrate = clockrate;
117 static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
119 struct ath_common *common = ath9k_hw_common(ah);
121 return usecs * common->clockrate;
124 bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
128 BUG_ON(timeout < AH_TIME_QUANTUM);
130 for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
131 if ((REG_READ(ah, reg) & mask) == val)
134 udelay(AH_TIME_QUANTUM);
137 ath_dbg(ath9k_hw_common(ah), ANY,
138 "timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
139 timeout, reg, REG_READ(ah, reg), mask, val);
143 EXPORT_SYMBOL(ath9k_hw_wait);
145 void ath9k_hw_write_array(struct ath_hw *ah, struct ar5416IniArray *array,
146 int column, unsigned int *writecnt)
150 ENABLE_REGWRITE_BUFFER(ah);
151 for (r = 0; r < array->ia_rows; r++) {
152 REG_WRITE(ah, INI_RA(array, r, 0),
153 INI_RA(array, r, column));
156 REGWRITE_BUFFER_FLUSH(ah);
159 u32 ath9k_hw_reverse_bits(u32 val, u32 n)
164 for (i = 0, retval = 0; i < n; i++) {
165 retval = (retval << 1) | (val & 1);
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_err(ath9k_hw_common(ah),
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 switch (ah->hw_version.devid) {
263 case AR5416_AR9100_DEVID:
264 ah->hw_version.macVersion = AR_SREV_VERSION_9100;
266 case AR9300_DEVID_AR9330:
267 ah->hw_version.macVersion = AR_SREV_VERSION_9330;
268 if (ah->get_mac_revision) {
269 ah->hw_version.macRev = ah->get_mac_revision();
271 val = REG_READ(ah, AR_SREV);
272 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
275 case AR9300_DEVID_AR9340:
276 ah->hw_version.macVersion = AR_SREV_VERSION_9340;
277 val = REG_READ(ah, AR_SREV);
278 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
282 val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
285 val = REG_READ(ah, AR_SREV);
286 ah->hw_version.macVersion =
287 (val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
288 ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
290 if (AR_SREV_9462(ah))
291 ah->is_pciexpress = true;
293 ah->is_pciexpress = (val &
294 AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
296 if (!AR_SREV_9100(ah))
297 ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
299 ah->hw_version.macRev = val & AR_SREV_REVISION;
301 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
302 ah->is_pciexpress = true;
306 /************************************/
307 /* HW Attach, Detach, Init Routines */
308 /************************************/
310 static void ath9k_hw_disablepcie(struct ath_hw *ah)
312 if (!AR_SREV_5416(ah))
315 REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
316 REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
317 REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
318 REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
319 REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
320 REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
321 REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
322 REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
323 REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
325 REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
328 static void ath9k_hw_aspm_init(struct ath_hw *ah)
330 struct ath_common *common = ath9k_hw_common(ah);
332 if (common->bus_ops->aspm_init)
333 common->bus_ops->aspm_init(common);
336 /* This should work for all families including legacy */
337 static bool ath9k_hw_chip_test(struct ath_hw *ah)
339 struct ath_common *common = ath9k_hw_common(ah);
340 u32 regAddr[2] = { AR_STA_ID0 };
342 static const u32 patternData[4] = {
343 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
347 if (!AR_SREV_9300_20_OR_LATER(ah)) {
349 regAddr[1] = AR_PHY_BASE + (8 << 2);
353 for (i = 0; i < loop_max; i++) {
354 u32 addr = regAddr[i];
357 regHold[i] = REG_READ(ah, addr);
358 for (j = 0; j < 0x100; j++) {
359 wrData = (j << 16) | j;
360 REG_WRITE(ah, addr, wrData);
361 rdData = REG_READ(ah, addr);
362 if (rdData != wrData) {
364 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
365 addr, wrData, rdData);
369 for (j = 0; j < 4; j++) {
370 wrData = patternData[j];
371 REG_WRITE(ah, addr, wrData);
372 rdData = REG_READ(ah, addr);
373 if (wrData != rdData) {
375 "address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
376 addr, wrData, rdData);
380 REG_WRITE(ah, regAddr[i], regHold[i]);
387 static void ath9k_hw_init_config(struct ath_hw *ah)
391 ah->config.dma_beacon_response_time = 2;
392 ah->config.sw_beacon_response_time = 10;
393 ah->config.additional_swba_backoff = 0;
394 ah->config.ack_6mb = 0x0;
395 ah->config.cwm_ignore_extcca = 0;
396 ah->config.pcie_clock_req = 0;
397 ah->config.pcie_waen = 0;
398 ah->config.analog_shiftreg = 1;
399 ah->config.enable_ani = true;
401 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
402 ah->config.spurchans[i][0] = AR_NO_SPUR;
403 ah->config.spurchans[i][1] = AR_NO_SPUR;
406 /* PAPRD needs some more work to be enabled */
407 ah->config.paprd_disable = 1;
409 ah->config.rx_intr_mitigation = true;
410 ah->config.pcieSerDesWrite = true;
413 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
414 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
415 * This means we use it for all AR5416 devices, and the few
416 * minor PCI AR9280 devices out there.
418 * Serialization is required because these devices do not handle
419 * well the case of two concurrent reads/writes due to the latency
420 * involved. During one read/write another read/write can be issued
421 * on another CPU while the previous read/write may still be working
422 * on our hardware, if we hit this case the hardware poops in a loop.
423 * We prevent this by serializing reads and writes.
425 * This issue is not present on PCI-Express devices or pre-AR5416
426 * devices (legacy, 802.11abg).
428 if (num_possible_cpus() > 1)
429 ah->config.serialize_regmode = SER_REG_MODE_AUTO;
432 static void ath9k_hw_init_defaults(struct ath_hw *ah)
434 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
436 regulatory->country_code = CTRY_DEFAULT;
437 regulatory->power_limit = MAX_RATE_POWER;
439 ah->hw_version.magic = AR5416_MAGIC;
440 ah->hw_version.subvendorid = 0;
443 ah->sta_id1_defaults =
444 AR_STA_ID1_CRPT_MIC_ENABLE |
445 AR_STA_ID1_MCAST_KSRCH;
446 if (AR_SREV_9100(ah))
447 ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
448 ah->enable_32kHz_clock = DONT_USE_32KHZ;
449 ah->slottime = ATH9K_SLOT_TIME_9;
450 ah->globaltxtimeout = (u32) -1;
451 ah->power_mode = ATH9K_PM_UNDEFINED;
452 ah->htc_reset_init = true;
455 static int ath9k_hw_init_macaddr(struct ath_hw *ah)
457 struct ath_common *common = ath9k_hw_common(ah);
461 static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
464 for (i = 0; i < 3; i++) {
465 eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
467 common->macaddr[2 * i] = eeval >> 8;
468 common->macaddr[2 * i + 1] = eeval & 0xff;
470 if (sum == 0 || sum == 0xffff * 3)
471 return -EADDRNOTAVAIL;
476 static int ath9k_hw_post_init(struct ath_hw *ah)
478 struct ath_common *common = ath9k_hw_common(ah);
481 if (common->bus_ops->ath_bus_type != ATH_USB) {
482 if (!ath9k_hw_chip_test(ah))
486 if (!AR_SREV_9300_20_OR_LATER(ah)) {
487 ecode = ar9002_hw_rf_claim(ah);
492 ecode = ath9k_hw_eeprom_init(ah);
496 ath_dbg(ath9k_hw_common(ah), CONFIG, "Eeprom VER: %d, REV: %d\n",
497 ah->eep_ops->get_eeprom_ver(ah),
498 ah->eep_ops->get_eeprom_rev(ah));
500 ecode = ath9k_hw_rf_alloc_ext_banks(ah);
502 ath_err(ath9k_hw_common(ah),
503 "Failed allocating banks for external radio\n");
504 ath9k_hw_rf_free_ext_banks(ah);
508 if (ah->config.enable_ani) {
509 ath9k_hw_ani_setup(ah);
510 ath9k_hw_ani_init(ah);
516 static void ath9k_hw_attach_ops(struct ath_hw *ah)
518 if (AR_SREV_9300_20_OR_LATER(ah))
519 ar9003_hw_attach_ops(ah);
521 ar9002_hw_attach_ops(ah);
524 /* Called for all hardware families */
525 static int __ath9k_hw_init(struct ath_hw *ah)
527 struct ath_common *common = ath9k_hw_common(ah);
530 ath9k_hw_read_revisions(ah);
533 * Read back AR_WA into a permanent copy and set bits 14 and 17.
534 * We need to do this to avoid RMW of this register. We cannot
535 * read the reg when chip is asleep.
537 ah->WARegVal = REG_READ(ah, AR_WA);
538 ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
539 AR_WA_ASPM_TIMER_BASED_DISABLE);
541 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
542 ath_err(common, "Couldn't reset chip\n");
546 if (AR_SREV_9462(ah))
547 ah->WARegVal &= ~AR_WA_D3_L1_DISABLE;
549 ath9k_hw_init_defaults(ah);
550 ath9k_hw_init_config(ah);
552 ath9k_hw_attach_ops(ah);
554 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
555 ath_err(common, "Couldn't wakeup chip\n");
559 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
560 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
561 ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
562 !ah->is_pciexpress)) {
563 ah->config.serialize_regmode =
566 ah->config.serialize_regmode =
571 ath_dbg(common, RESET, "serialize_regmode is %d\n",
572 ah->config.serialize_regmode);
574 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
575 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
577 ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
579 switch (ah->hw_version.macVersion) {
580 case AR_SREV_VERSION_5416_PCI:
581 case AR_SREV_VERSION_5416_PCIE:
582 case AR_SREV_VERSION_9160:
583 case AR_SREV_VERSION_9100:
584 case AR_SREV_VERSION_9280:
585 case AR_SREV_VERSION_9285:
586 case AR_SREV_VERSION_9287:
587 case AR_SREV_VERSION_9271:
588 case AR_SREV_VERSION_9300:
589 case AR_SREV_VERSION_9330:
590 case AR_SREV_VERSION_9485:
591 case AR_SREV_VERSION_9340:
592 case AR_SREV_VERSION_9462:
596 "Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
597 ah->hw_version.macVersion, ah->hw_version.macRev);
601 if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
603 ah->is_pciexpress = false;
605 ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
606 ath9k_hw_init_cal_settings(ah);
608 ah->ani_function = ATH9K_ANI_ALL;
609 if (AR_SREV_9280_20_OR_LATER(ah) && !AR_SREV_9300_20_OR_LATER(ah))
610 ah->ani_function &= ~ATH9K_ANI_NOISE_IMMUNITY_LEVEL;
611 if (!AR_SREV_9300_20_OR_LATER(ah))
612 ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
614 /* disable ANI for 9340 */
615 if (AR_SREV_9340(ah))
616 ah->config.enable_ani = false;
618 ath9k_hw_init_mode_regs(ah);
620 if (!ah->is_pciexpress)
621 ath9k_hw_disablepcie(ah);
623 r = ath9k_hw_post_init(ah);
627 ath9k_hw_init_mode_gain_regs(ah);
628 r = ath9k_hw_fill_cap_info(ah);
632 if (ah->is_pciexpress)
633 ath9k_hw_aspm_init(ah);
635 r = ath9k_hw_init_macaddr(ah);
637 ath_err(common, "Failed to initialize MAC address\n");
641 if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
642 ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
644 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
646 if (AR_SREV_9330(ah))
647 ah->bb_watchdog_timeout_ms = 85;
649 ah->bb_watchdog_timeout_ms = 25;
651 common->state = ATH_HW_INITIALIZED;
656 int ath9k_hw_init(struct ath_hw *ah)
659 struct ath_common *common = ath9k_hw_common(ah);
661 /* These are all the AR5008/AR9001/AR9002 hardware family of chipsets */
662 switch (ah->hw_version.devid) {
663 case AR5416_DEVID_PCI:
664 case AR5416_DEVID_PCIE:
665 case AR5416_AR9100_DEVID:
666 case AR9160_DEVID_PCI:
667 case AR9280_DEVID_PCI:
668 case AR9280_DEVID_PCIE:
669 case AR9285_DEVID_PCIE:
670 case AR9287_DEVID_PCI:
671 case AR9287_DEVID_PCIE:
672 case AR2427_DEVID_PCIE:
673 case AR9300_DEVID_PCIE:
674 case AR9300_DEVID_AR9485_PCIE:
675 case AR9300_DEVID_AR9330:
676 case AR9300_DEVID_AR9340:
677 case AR9300_DEVID_AR9580:
678 case AR9300_DEVID_AR9462:
679 case AR9485_DEVID_AR1111:
682 if (common->bus_ops->ath_bus_type == ATH_USB)
684 ath_err(common, "Hardware device ID 0x%04x not supported\n",
685 ah->hw_version.devid);
689 ret = __ath9k_hw_init(ah);
692 "Unable to initialize hardware; initialization status: %d\n",
699 EXPORT_SYMBOL(ath9k_hw_init);
701 static void ath9k_hw_init_qos(struct ath_hw *ah)
703 ENABLE_REGWRITE_BUFFER(ah);
705 REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
706 REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
708 REG_WRITE(ah, AR_QOS_NO_ACK,
709 SM(2, AR_QOS_NO_ACK_TWO_BIT) |
710 SM(5, AR_QOS_NO_ACK_BIT_OFF) |
711 SM(0, AR_QOS_NO_ACK_BYTE_OFF));
713 REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
714 REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
715 REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
716 REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
717 REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
719 REGWRITE_BUFFER_FLUSH(ah);
722 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
724 struct ath_common *common = ath9k_hw_common(ah);
727 REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
729 REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
731 while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
735 if (WARN_ON_ONCE(i >= 100)) {
736 ath_err(common, "PLL4 meaurement not done\n");
743 return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
745 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
747 static void ath9k_hw_init_pll(struct ath_hw *ah,
748 struct ath9k_channel *chan)
752 if (AR_SREV_9485(ah)) {
754 /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
755 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
756 AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
757 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
758 AR_CH0_DPLL2_KD, 0x40);
759 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
760 AR_CH0_DPLL2_KI, 0x4);
762 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
763 AR_CH0_BB_DPLL1_REFDIV, 0x5);
764 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
765 AR_CH0_BB_DPLL1_NINI, 0x58);
766 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
767 AR_CH0_BB_DPLL1_NFRAC, 0x0);
769 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
770 AR_CH0_BB_DPLL2_OUTDIV, 0x1);
771 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
772 AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
773 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
774 AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
776 /* program BB PLL phase_shift to 0x6 */
777 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
778 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
780 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
781 AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
783 } else if (AR_SREV_9330(ah)) {
784 u32 ddr_dpll2, pll_control2, kd;
786 if (ah->is_clk_25mhz) {
787 ddr_dpll2 = 0x18e82f01;
788 pll_control2 = 0xe04a3d;
791 ddr_dpll2 = 0x19e82f01;
792 pll_control2 = 0x886666;
796 /* program DDR PLL ki and kd value */
797 REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
799 /* program DDR PLL phase_shift */
800 REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
801 AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
803 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
806 /* program refdiv, nint, frac to RTC register */
807 REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
809 /* program BB PLL kd and ki value */
810 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
811 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
813 /* program BB PLL phase_shift */
814 REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
815 AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
816 } else if (AR_SREV_9340(ah)) {
817 u32 regval, pll2_divint, pll2_divfrac, refdiv;
819 REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
822 REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
825 if (ah->is_clk_25mhz) {
827 pll2_divfrac = 0x1eb85;
835 regval = REG_READ(ah, AR_PHY_PLL_MODE);
836 regval |= (0x1 << 16);
837 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
840 REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
841 (pll2_divint << 18) | pll2_divfrac);
844 regval = REG_READ(ah, AR_PHY_PLL_MODE);
845 regval = (regval & 0x80071fff) | (0x1 << 30) | (0x1 << 13) |
846 (0x4 << 26) | (0x18 << 19);
847 REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
848 REG_WRITE(ah, AR_PHY_PLL_MODE,
849 REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
853 pll = ath9k_hw_compute_pll_control(ah, chan);
855 REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
857 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah))
860 /* Switch the core clock for ar9271 to 117Mhz */
861 if (AR_SREV_9271(ah)) {
863 REG_WRITE(ah, 0x50040, 0x304);
866 udelay(RTC_PLL_SETTLE_DELAY);
868 REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
870 if (AR_SREV_9340(ah)) {
871 if (ah->is_clk_25mhz) {
872 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
873 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
874 REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
876 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
877 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
878 REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
884 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
885 enum nl80211_iftype opmode)
887 u32 sync_default = AR_INTR_SYNC_DEFAULT;
888 u32 imr_reg = AR_IMR_TXERR |
894 if (AR_SREV_9340(ah))
895 sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
897 if (AR_SREV_9300_20_OR_LATER(ah)) {
898 imr_reg |= AR_IMR_RXOK_HP;
899 if (ah->config.rx_intr_mitigation)
900 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
902 imr_reg |= AR_IMR_RXOK_LP;
905 if (ah->config.rx_intr_mitigation)
906 imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
908 imr_reg |= AR_IMR_RXOK;
911 if (ah->config.tx_intr_mitigation)
912 imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
914 imr_reg |= AR_IMR_TXOK;
916 if (opmode == NL80211_IFTYPE_AP)
917 imr_reg |= AR_IMR_MIB;
919 ENABLE_REGWRITE_BUFFER(ah);
921 REG_WRITE(ah, AR_IMR, imr_reg);
922 ah->imrs2_reg |= AR_IMR_S2_GTT;
923 REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
925 if (!AR_SREV_9100(ah)) {
926 REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
927 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
928 REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
931 REGWRITE_BUFFER_FLUSH(ah);
933 if (AR_SREV_9300_20_OR_LATER(ah)) {
934 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
935 REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
936 REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
937 REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
941 static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
943 u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
944 val = min(val, (u32) 0xFFFF);
945 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
948 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
950 u32 val = ath9k_hw_mac_to_clks(ah, us);
951 val = min(val, (u32) 0xFFFF);
952 REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
955 static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
957 u32 val = ath9k_hw_mac_to_clks(ah, us);
958 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
959 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
962 static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
964 u32 val = ath9k_hw_mac_to_clks(ah, us);
965 val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
966 REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
969 static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
972 ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
974 ah->globaltxtimeout = (u32) -1;
977 REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
978 ah->globaltxtimeout = tu;
983 void ath9k_hw_init_global_settings(struct ath_hw *ah)
985 struct ath_common *common = ath9k_hw_common(ah);
986 struct ieee80211_conf *conf = &common->hw->conf;
987 const struct ath9k_channel *chan = ah->curchan;
988 int acktimeout, ctstimeout;
991 int rx_lat = 0, tx_lat = 0, eifs = 0;
994 ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
1000 if (ah->misc_mode != 0)
1001 REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
1003 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1009 if (IS_CHAN_HALF_RATE(chan)) {
1013 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1018 } else if (IS_CHAN_QUARTER_RATE(chan)) {
1020 rx_lat = (rx_lat * 4) - 1;
1022 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1028 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1029 eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
1030 reg = AR_USEC_ASYNC_FIFO;
1032 eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
1034 reg = REG_READ(ah, AR_USEC);
1036 rx_lat = MS(reg, AR_USEC_RX_LAT);
1037 tx_lat = MS(reg, AR_USEC_TX_LAT);
1039 slottime = ah->slottime;
1040 if (IS_CHAN_5GHZ(chan))
1046 /* As defined by IEEE 802.11-2007 17.3.8.6 */
1047 acktimeout = slottime + sifstime + 3 * ah->coverage_class;
1048 ctstimeout = acktimeout;
1051 * Workaround for early ACK timeouts, add an offset to match the
1052 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
1053 * This was initially only meant to work around an issue with delayed
1054 * BA frames in some implementations, but it has been found to fix ACK
1055 * timeout issues in other cases as well.
1057 if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ) {
1058 acktimeout += 64 - sifstime - ah->slottime;
1059 ctstimeout += 48 - sifstime - ah->slottime;
1063 ath9k_hw_set_sifs_time(ah, sifstime);
1064 ath9k_hw_setslottime(ah, slottime);
1065 ath9k_hw_set_ack_timeout(ah, acktimeout);
1066 ath9k_hw_set_cts_timeout(ah, ctstimeout);
1067 if (ah->globaltxtimeout != (u32) -1)
1068 ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
1070 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
1071 REG_RMW(ah, AR_USEC,
1072 (common->clockrate - 1) |
1073 SM(rx_lat, AR_USEC_RX_LAT) |
1074 SM(tx_lat, AR_USEC_TX_LAT),
1075 AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
1078 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
1080 void ath9k_hw_deinit(struct ath_hw *ah)
1082 struct ath_common *common = ath9k_hw_common(ah);
1084 if (common->state < ATH_HW_INITIALIZED)
1087 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1090 ath9k_hw_rf_free_ext_banks(ah);
1092 EXPORT_SYMBOL(ath9k_hw_deinit);
1098 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
1100 u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
1102 if (IS_CHAN_B(chan))
1104 else if (IS_CHAN_G(chan))
1112 /****************************************/
1113 /* Reset and Channel Switching Routines */
1114 /****************************************/
1116 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
1118 struct ath_common *common = ath9k_hw_common(ah);
1120 ENABLE_REGWRITE_BUFFER(ah);
1123 * set AHB_MODE not to do cacheline prefetches
1125 if (!AR_SREV_9300_20_OR_LATER(ah))
1126 REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
1129 * let mac dma reads be in 128 byte chunks
1131 REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
1133 REGWRITE_BUFFER_FLUSH(ah);
1136 * Restore TX Trigger Level to its pre-reset value.
1137 * The initial value depends on whether aggregation is enabled, and is
1138 * adjusted whenever underruns are detected.
1140 if (!AR_SREV_9300_20_OR_LATER(ah))
1141 REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
1143 ENABLE_REGWRITE_BUFFER(ah);
1146 * let mac dma writes be in 128 byte chunks
1148 REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
1151 * Setup receive FIFO threshold to hold off TX activities
1153 REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
1155 if (AR_SREV_9300_20_OR_LATER(ah)) {
1156 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
1157 REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
1159 ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
1160 ah->caps.rx_status_len);
1164 * reduce the number of usable entries in PCU TXBUF to avoid
1165 * wrap around issues.
1167 if (AR_SREV_9285(ah)) {
1168 /* For AR9285 the number of Fifos are reduced to half.
1169 * So set the usable tx buf size also to half to
1170 * avoid data/delimiter underruns
1172 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1173 AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
1174 } else if (!AR_SREV_9271(ah)) {
1175 REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
1176 AR_PCU_TXBUF_CTRL_USABLE_SIZE);
1179 REGWRITE_BUFFER_FLUSH(ah);
1181 if (AR_SREV_9300_20_OR_LATER(ah))
1182 ath9k_hw_reset_txstatus_ring(ah);
1185 static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
1187 u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
1188 u32 set = AR_STA_ID1_KSRCH_MODE;
1191 case NL80211_IFTYPE_ADHOC:
1192 case NL80211_IFTYPE_MESH_POINT:
1193 set |= AR_STA_ID1_ADHOC;
1194 REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1196 case NL80211_IFTYPE_AP:
1197 set |= AR_STA_ID1_STA_AP;
1199 case NL80211_IFTYPE_STATION:
1200 REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
1203 if (!ah->is_monitoring)
1207 REG_RMW(ah, AR_STA_ID1, set, mask);
1210 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
1211 u32 *coef_mantissa, u32 *coef_exponent)
1213 u32 coef_exp, coef_man;
1215 for (coef_exp = 31; coef_exp > 0; coef_exp--)
1216 if ((coef_scaled >> coef_exp) & 0x1)
1219 coef_exp = 14 - (coef_exp - COEF_SCALE_S);
1221 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
1223 *coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
1224 *coef_exponent = coef_exp - 16;
1227 static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
1232 if (AR_SREV_9100(ah)) {
1233 REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
1234 AR_RTC_DERIVED_CLK_PERIOD, 1);
1235 (void)REG_READ(ah, AR_RTC_DERIVED_CLK);
1238 ENABLE_REGWRITE_BUFFER(ah);
1240 if (AR_SREV_9300_20_OR_LATER(ah)) {
1241 REG_WRITE(ah, AR_WA, ah->WARegVal);
1245 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1246 AR_RTC_FORCE_WAKE_ON_INT);
1248 if (AR_SREV_9100(ah)) {
1249 rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
1250 AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
1252 tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
1254 (AR_INTR_SYNC_LOCAL_TIMEOUT |
1255 AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
1257 REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
1260 if (!AR_SREV_9300_20_OR_LATER(ah))
1262 REG_WRITE(ah, AR_RC, val);
1264 } else if (!AR_SREV_9300_20_OR_LATER(ah))
1265 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1267 rst_flags = AR_RTC_RC_MAC_WARM;
1268 if (type == ATH9K_RESET_COLD)
1269 rst_flags |= AR_RTC_RC_MAC_COLD;
1272 if (AR_SREV_9330(ah)) {
1277 * call external reset function to reset WMAC if:
1278 * - doing a cold reset
1279 * - we have pending frames in the TX queues
1282 for (i = 0; i < AR_NUM_QCU; i++) {
1283 npend = ath9k_hw_numtxpending(ah, i);
1288 if (ah->external_reset &&
1289 (npend || type == ATH9K_RESET_COLD)) {
1292 ath_dbg(ath9k_hw_common(ah), RESET,
1293 "reset MAC via external reset\n");
1295 reset_err = ah->external_reset();
1297 ath_err(ath9k_hw_common(ah),
1298 "External reset failed, err=%d\n",
1303 REG_WRITE(ah, AR_RTC_RESET, 1);
1307 REG_WRITE(ah, AR_RTC_RC, rst_flags);
1309 REGWRITE_BUFFER_FLUSH(ah);
1313 REG_WRITE(ah, AR_RTC_RC, 0);
1314 if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
1315 ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
1319 if (!AR_SREV_9100(ah))
1320 REG_WRITE(ah, AR_RC, 0);
1322 if (AR_SREV_9100(ah))
1328 static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
1330 ENABLE_REGWRITE_BUFFER(ah);
1332 if (AR_SREV_9300_20_OR_LATER(ah)) {
1333 REG_WRITE(ah, AR_WA, ah->WARegVal);
1337 REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
1338 AR_RTC_FORCE_WAKE_ON_INT);
1340 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1341 REG_WRITE(ah, AR_RC, AR_RC_AHB);
1343 REG_WRITE(ah, AR_RTC_RESET, 0);
1345 REGWRITE_BUFFER_FLUSH(ah);
1347 if (!AR_SREV_9300_20_OR_LATER(ah))
1350 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1351 REG_WRITE(ah, AR_RC, 0);
1353 REG_WRITE(ah, AR_RTC_RESET, 1);
1355 if (!ath9k_hw_wait(ah,
1360 ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
1364 return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
1367 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
1371 if (AR_SREV_9300_20_OR_LATER(ah)) {
1372 REG_WRITE(ah, AR_WA, ah->WARegVal);
1376 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1377 AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
1380 case ATH9K_RESET_POWER_ON:
1381 ret = ath9k_hw_set_reset_power_on(ah);
1383 case ATH9K_RESET_WARM:
1384 case ATH9K_RESET_COLD:
1385 ret = ath9k_hw_set_reset(ah, type);
1391 if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
1392 REG_WRITE(ah, AR_RTC_KEEP_AWAKE, 0x2);
1397 static bool ath9k_hw_chip_reset(struct ath_hw *ah,
1398 struct ath9k_channel *chan)
1400 int reset_type = ATH9K_RESET_WARM;
1402 if (AR_SREV_9280(ah)) {
1403 if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
1404 reset_type = ATH9K_RESET_POWER_ON;
1406 reset_type = ATH9K_RESET_COLD;
1409 if (!ath9k_hw_set_reset_reg(ah, reset_type))
1412 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1415 ah->chip_fullsleep = false;
1416 ath9k_hw_init_pll(ah, chan);
1417 ath9k_hw_set_rfmode(ah, chan);
1422 static bool ath9k_hw_channel_change(struct ath_hw *ah,
1423 struct ath9k_channel *chan)
1425 struct ath_common *common = ath9k_hw_common(ah);
1428 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1429 bool band_switch, mode_diff;
1432 band_switch = (chan->channelFlags & (CHANNEL_2GHZ | CHANNEL_5GHZ)) !=
1433 (ah->curchan->channelFlags & (CHANNEL_2GHZ |
1435 mode_diff = (chan->chanmode != ah->curchan->chanmode);
1437 for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
1438 if (ath9k_hw_numtxpending(ah, qnum)) {
1439 ath_dbg(common, QUEUE,
1440 "Transmit frames pending on queue %d\n", qnum);
1445 if (!ath9k_hw_rfbus_req(ah)) {
1446 ath_err(common, "Could not kill baseband RX\n");
1450 if (edma && (band_switch || mode_diff)) {
1451 ath9k_hw_mark_phy_inactive(ah);
1454 ath9k_hw_init_pll(ah, NULL);
1456 if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
1457 ath_err(common, "Failed to do fast channel change\n");
1462 ath9k_hw_set_channel_regs(ah, chan);
1464 r = ath9k_hw_rf_set_freq(ah, chan);
1466 ath_err(common, "Failed to set channel\n");
1469 ath9k_hw_set_clockrate(ah);
1470 ath9k_hw_apply_txpower(ah, chan, false);
1471 ath9k_hw_rfbus_done(ah);
1473 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1474 ath9k_hw_set_delta_slope(ah, chan);
1476 ath9k_hw_spur_mitigate_freq(ah, chan);
1478 if (edma && (band_switch || mode_diff)) {
1479 ah->ah_flags |= AH_FASTCC;
1480 if (band_switch || ini_reloaded)
1481 ah->eep_ops->set_board_values(ah, chan);
1483 ath9k_hw_init_bb(ah, chan);
1485 if (band_switch || ini_reloaded)
1486 ath9k_hw_init_cal(ah, chan);
1487 ah->ah_flags &= ~AH_FASTCC;
1493 static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
1495 u32 gpio_mask = ah->gpio_mask;
1498 for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
1499 if (!(gpio_mask & 1))
1502 ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1503 ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
1507 bool ath9k_hw_check_alive(struct ath_hw *ah)
1512 if (AR_SREV_9285_12_OR_LATER(ah))
1516 reg = REG_READ(ah, AR_OBS_BUS_1);
1518 if ((reg & 0x7E7FFFEF) == 0x00702400)
1521 switch (reg & 0x7E000B00) {
1529 } while (count-- > 0);
1533 EXPORT_SYMBOL(ath9k_hw_check_alive);
1536 * Fast channel change:
1537 * (Change synthesizer based on channel freq without resetting chip)
1541 * - Chip is just coming out of full sleep
1542 * - Channel to be set is same as current channel
1543 * - Channel flags are different, (eg.,moving from 2GHz to 5GHz channel)
1545 static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
1547 struct ath_common *common = ath9k_hw_common(ah);
1550 if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
1553 if (ah->chip_fullsleep)
1559 if (chan->channel == ah->curchan->channel)
1562 if ((chan->channelFlags & CHANNEL_ALL) !=
1563 (ah->curchan->channelFlags & CHANNEL_ALL))
1566 if (!ath9k_hw_check_alive(ah))
1570 * For AR9462, make sure that calibration data for
1571 * re-using are present.
1573 if (AR_SREV_9462(ah) && (!ah->caldata ||
1574 !ah->caldata->done_txiqcal_once ||
1575 !ah->caldata->done_txclcal_once ||
1576 !ah->caldata->rtt_hist.num_readings))
1579 ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
1580 ah->curchan->channel, chan->channel);
1582 ret = ath9k_hw_channel_change(ah, chan);
1586 ath9k_hw_loadnf(ah, ah->curchan);
1587 ath9k_hw_start_nfcal(ah, true);
1589 if ((ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && ar9003_mci_is_ready(ah))
1590 ar9003_mci_2g5g_switch(ah, true);
1592 if (AR_SREV_9271(ah))
1593 ar9002_hw_load_ani_reg(ah, chan);
1600 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
1601 struct ath9k_hw_cal_data *caldata, bool fastcc)
1603 struct ath_common *common = ath9k_hw_common(ah);
1609 bool start_mci_reset = false;
1610 bool mci = !!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI);
1611 bool save_fullsleep = ah->chip_fullsleep;
1614 start_mci_reset = ar9003_mci_start_reset(ah, chan);
1615 if (start_mci_reset)
1619 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
1622 if (ah->curchan && !ah->chip_fullsleep)
1623 ath9k_hw_getnf(ah, ah->curchan);
1625 ah->caldata = caldata;
1627 (chan->channel != caldata->channel ||
1628 (chan->channelFlags & ~CHANNEL_CW_INT) !=
1629 (caldata->channelFlags & ~CHANNEL_CW_INT))) {
1630 /* Operating channel changed, reset channel calibration data */
1631 memset(caldata, 0, sizeof(*caldata));
1632 ath9k_init_nfcal_hist_buffer(ah, chan);
1634 ah->noise = ath9k_hw_getchan_noise(ah, chan);
1637 r = ath9k_hw_do_fastcc(ah, chan);
1643 ar9003_mci_stop_bt(ah, save_fullsleep);
1645 saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
1646 if (saveDefAntenna == 0)
1649 macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
1651 /* For chips on which RTC reset is done, save TSF before it gets cleared */
1652 if (AR_SREV_9100(ah) ||
1653 (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)))
1654 tsf = ath9k_hw_gettsf64(ah);
1656 saveLedState = REG_READ(ah, AR_CFG_LED) &
1657 (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
1658 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
1660 ath9k_hw_mark_phy_inactive(ah);
1662 ah->paprd_table_write_done = false;
1664 /* Only required on the first reset */
1665 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1667 AR9271_RESET_POWER_DOWN_CONTROL,
1668 AR9271_RADIO_RF_RST);
1672 if (!ath9k_hw_chip_reset(ah, chan)) {
1673 ath_err(common, "Chip reset failed\n");
1677 /* Only required on the first reset */
1678 if (AR_SREV_9271(ah) && ah->htc_reset_init) {
1679 ah->htc_reset_init = false;
1681 AR9271_RESET_POWER_DOWN_CONTROL,
1682 AR9271_GATE_MAC_CTL);
1688 ath9k_hw_settsf64(ah, tsf);
1690 if (AR_SREV_9280_20_OR_LATER(ah))
1691 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
1693 if (!AR_SREV_9300_20_OR_LATER(ah))
1694 ar9002_hw_enable_async_fifo(ah);
1696 r = ath9k_hw_process_ini(ah, chan);
1701 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
1704 * Some AR91xx SoC devices frequently fail to accept TSF writes
1705 * right after the chip reset. When that happens, write a new
1706 * value after the initvals have been applied, with an offset
1707 * based on measured time difference
1709 if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
1711 ath9k_hw_settsf64(ah, tsf);
1714 /* Setup MFP options for CCMP */
1715 if (AR_SREV_9280_20_OR_LATER(ah)) {
1716 /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
1717 * frames when constructing CCMP AAD. */
1718 REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
1720 ah->sw_mgmt_crypto = false;
1721 } else if (AR_SREV_9160_10_OR_LATER(ah)) {
1722 /* Disable hardware crypto for management frames */
1723 REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
1724 AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
1725 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1726 AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
1727 ah->sw_mgmt_crypto = true;
1729 ah->sw_mgmt_crypto = true;
1731 if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
1732 ath9k_hw_set_delta_slope(ah, chan);
1734 ath9k_hw_spur_mitigate_freq(ah, chan);
1735 ah->eep_ops->set_board_values(ah, chan);
1737 ENABLE_REGWRITE_BUFFER(ah);
1739 REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
1740 REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
1742 | AR_STA_ID1_RTS_USE_DEF
1744 ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
1745 | ah->sta_id1_defaults);
1746 ath_hw_setbssidmask(common);
1747 REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
1748 ath9k_hw_write_associd(ah);
1749 REG_WRITE(ah, AR_ISR, ~0);
1750 REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
1752 REGWRITE_BUFFER_FLUSH(ah);
1754 ath9k_hw_set_operating_mode(ah, ah->opmode);
1756 r = ath9k_hw_rf_set_freq(ah, chan);
1760 ath9k_hw_set_clockrate(ah);
1762 ENABLE_REGWRITE_BUFFER(ah);
1764 for (i = 0; i < AR_NUM_DCU; i++)
1765 REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
1767 REGWRITE_BUFFER_FLUSH(ah);
1770 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1771 ath9k_hw_resettxqueue(ah, i);
1773 ath9k_hw_init_interrupt_masks(ah, ah->opmode);
1774 ath9k_hw_ani_cache_ini_regs(ah);
1775 ath9k_hw_init_qos(ah);
1777 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1778 ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio);
1780 ath9k_hw_init_global_settings(ah);
1782 if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
1783 REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
1784 AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
1785 REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
1786 AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
1787 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
1788 AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
1791 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
1793 ath9k_hw_set_dma(ah);
1795 REG_WRITE(ah, AR_OBS, 8);
1797 if (ah->config.rx_intr_mitigation) {
1798 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
1799 REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
1802 if (ah->config.tx_intr_mitigation) {
1803 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
1804 REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
1807 ath9k_hw_init_bb(ah, chan);
1810 caldata->done_txiqcal_once = false;
1811 caldata->done_txclcal_once = false;
1812 caldata->rtt_hist.num_readings = 0;
1814 if (!ath9k_hw_init_cal(ah, chan))
1817 ath9k_hw_loadnf(ah, chan);
1818 ath9k_hw_start_nfcal(ah, true);
1820 if (mci && ar9003_mci_end_reset(ah, chan, caldata))
1823 ENABLE_REGWRITE_BUFFER(ah);
1825 ath9k_hw_restore_chainmask(ah);
1826 REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
1828 REGWRITE_BUFFER_FLUSH(ah);
1831 * For big endian systems turn on swapping for descriptors
1833 if (AR_SREV_9100(ah)) {
1835 mask = REG_READ(ah, AR_CFG);
1836 if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
1837 ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
1841 INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
1842 REG_WRITE(ah, AR_CFG, mask);
1843 ath_dbg(common, RESET, "Setting CFG 0x%x\n",
1844 REG_READ(ah, AR_CFG));
1847 if (common->bus_ops->ath_bus_type == ATH_USB) {
1848 /* Configure AR9271 target WLAN */
1849 if (AR_SREV_9271(ah))
1850 REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
1852 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1855 else if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
1856 REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
1858 REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
1862 if (ath9k_hw_btcoex_is_enabled(ah))
1863 ath9k_hw_btcoex_enable(ah);
1866 ar9003_mci_check_bt(ah);
1868 if (AR_SREV_9300_20_OR_LATER(ah)) {
1869 ar9003_hw_bb_watchdog_config(ah);
1871 ar9003_hw_disable_phy_restart(ah);
1874 ath9k_hw_apply_gpio_override(ah);
1878 EXPORT_SYMBOL(ath9k_hw_reset);
1880 /******************************/
1881 /* Power Management (Chipset) */
1882 /******************************/
1885 * Notify Power Mgt is disabled in self-generated frames.
1886 * If requested, force chip to sleep.
1888 static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
1890 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1892 if (AR_SREV_9462(ah)) {
1893 REG_WRITE(ah, AR_TIMER_MODE,
1894 REG_READ(ah, AR_TIMER_MODE) & 0xFFFFFF00);
1895 REG_WRITE(ah, AR_NDP2_TIMER_MODE, REG_READ(ah,
1896 AR_NDP2_TIMER_MODE) & 0xFFFFFF00);
1897 REG_WRITE(ah, AR_SLP32_INC,
1898 REG_READ(ah, AR_SLP32_INC) & 0xFFF00000);
1899 /* xxx Required for WLAN only case ? */
1900 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
1905 * Clear the RTC force wake bit to allow the
1906 * mac to go to sleep.
1908 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
1910 if (AR_SREV_9462(ah))
1913 if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
1914 REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
1916 /* Shutdown chip. Active low */
1917 if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
1918 REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
1923 /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
1924 if (AR_SREV_9300_20_OR_LATER(ah))
1925 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1929 * Notify Power Management is enabled in self-generating
1930 * frames. If request, set power mode of chip to
1931 * auto/normal. Duration in units of 128us (1/8 TU).
1933 static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip)
1937 REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
1939 struct ath9k_hw_capabilities *pCap = &ah->caps;
1941 if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1942 /* Set WakeOnInterrupt bit; clear ForceWake bit */
1943 REG_WRITE(ah, AR_RTC_FORCE_WAKE,
1944 AR_RTC_FORCE_WAKE_ON_INT);
1947 /* When chip goes into network sleep, it could be waken
1948 * up by MCI_INT interrupt caused by BT's HW messages
1949 * (LNA_xxx, CONT_xxx) which chould be in a very fast
1950 * rate (~100us). This will cause chip to leave and
1951 * re-enter network sleep mode frequently, which in
1952 * consequence will have WLAN MCI HW to generate lots of
1953 * SYS_WAKING and SYS_SLEEPING messages which will make
1954 * BT CPU to busy to process.
1956 if (AR_SREV_9462(ah)) {
1957 val = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_EN) &
1958 ~AR_MCI_INTERRUPT_RX_HW_MSG_MASK;
1959 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, val);
1962 * Clear the RTC force wake bit to allow the
1963 * mac to go to sleep.
1965 REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
1966 AR_RTC_FORCE_WAKE_EN);
1968 if (AR_SREV_9462(ah))
1973 /* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
1974 if (AR_SREV_9300_20_OR_LATER(ah))
1975 REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
1978 static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
1983 /* Set Bits 14 and 17 of AR_WA before powering on the chip. */
1984 if (AR_SREV_9300_20_OR_LATER(ah)) {
1985 REG_WRITE(ah, AR_WA, ah->WARegVal);
1990 if ((REG_READ(ah, AR_RTC_STATUS) &
1991 AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
1992 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
1995 if (!AR_SREV_9300_20_OR_LATER(ah))
1996 ath9k_hw_init_pll(ah, NULL);
1998 if (AR_SREV_9100(ah))
1999 REG_SET_BIT(ah, AR_RTC_RESET,
2002 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2003 AR_RTC_FORCE_WAKE_EN);
2006 for (i = POWER_UP_TIME / 50; i > 0; i--) {
2007 val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
2008 if (val == AR_RTC_STATUS_ON)
2011 REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
2012 AR_RTC_FORCE_WAKE_EN);
2015 ath_err(ath9k_hw_common(ah),
2016 "Failed to wakeup in %uus\n",
2017 POWER_UP_TIME / 20);
2022 REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
2027 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
2029 struct ath_common *common = ath9k_hw_common(ah);
2030 int status = true, setChip = true;
2031 static const char *modes[] = {
2038 if (ah->power_mode == mode)
2041 ath_dbg(common, RESET, "%s -> %s\n",
2042 modes[ah->power_mode], modes[mode]);
2045 case ATH9K_PM_AWAKE:
2046 status = ath9k_hw_set_power_awake(ah, setChip);
2048 if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
2049 REG_WRITE(ah, AR_RTC_KEEP_AWAKE, 0x2);
2052 case ATH9K_PM_FULL_SLEEP:
2053 if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
2054 ar9003_mci_set_full_sleep(ah);
2056 ath9k_set_power_sleep(ah, setChip);
2057 ah->chip_fullsleep = true;
2059 case ATH9K_PM_NETWORK_SLEEP:
2061 if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
2062 REG_WRITE(ah, AR_RTC_KEEP_AWAKE, 0x2);
2064 ath9k_set_power_network_sleep(ah, setChip);
2067 ath_err(common, "Unknown power mode %u\n", mode);
2070 ah->power_mode = mode;
2073 * XXX: If this warning never comes up after a while then
2074 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
2075 * ath9k_hw_setpower() return type void.
2078 if (!(ah->ah_flags & AH_UNPLUGGED))
2079 ATH_DBG_WARN_ON_ONCE(!status);
2083 EXPORT_SYMBOL(ath9k_hw_setpower);
2085 /*******************/
2086 /* Beacon Handling */
2087 /*******************/
2089 void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
2093 ENABLE_REGWRITE_BUFFER(ah);
2095 switch (ah->opmode) {
2096 case NL80211_IFTYPE_ADHOC:
2097 case NL80211_IFTYPE_MESH_POINT:
2098 REG_SET_BIT(ah, AR_TXCFG,
2099 AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
2100 REG_WRITE(ah, AR_NEXT_NDP_TIMER, next_beacon +
2101 TU_TO_USEC(ah->atim_window ? ah->atim_window : 1));
2102 flags |= AR_NDP_TIMER_EN;
2103 case NL80211_IFTYPE_AP:
2104 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
2105 REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
2106 TU_TO_USEC(ah->config.dma_beacon_response_time));
2107 REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
2108 TU_TO_USEC(ah->config.sw_beacon_response_time));
2110 AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
2113 ath_dbg(ath9k_hw_common(ah), BEACON,
2114 "%s: unsupported opmode: %d\n", __func__, ah->opmode);
2119 REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
2120 REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
2121 REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
2122 REG_WRITE(ah, AR_NDP_PERIOD, beacon_period);
2124 REGWRITE_BUFFER_FLUSH(ah);
2126 REG_SET_BIT(ah, AR_TIMER_MODE, flags);
2128 EXPORT_SYMBOL(ath9k_hw_beaconinit);
2130 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
2131 const struct ath9k_beacon_state *bs)
2133 u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
2134 struct ath9k_hw_capabilities *pCap = &ah->caps;
2135 struct ath_common *common = ath9k_hw_common(ah);
2137 ENABLE_REGWRITE_BUFFER(ah);
2139 REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
2141 REG_WRITE(ah, AR_BEACON_PERIOD,
2142 TU_TO_USEC(bs->bs_intval));
2143 REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
2144 TU_TO_USEC(bs->bs_intval));
2146 REGWRITE_BUFFER_FLUSH(ah);
2148 REG_RMW_FIELD(ah, AR_RSSI_THR,
2149 AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
2151 beaconintval = bs->bs_intval;
2153 if (bs->bs_sleepduration > beaconintval)
2154 beaconintval = bs->bs_sleepduration;
2156 dtimperiod = bs->bs_dtimperiod;
2157 if (bs->bs_sleepduration > dtimperiod)
2158 dtimperiod = bs->bs_sleepduration;
2160 if (beaconintval == dtimperiod)
2161 nextTbtt = bs->bs_nextdtim;
2163 nextTbtt = bs->bs_nexttbtt;
2165 ath_dbg(common, BEACON, "next DTIM %d\n", bs->bs_nextdtim);
2166 ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
2167 ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
2168 ath_dbg(common, BEACON, "DTIM period %d\n", dtimperiod);
2170 ENABLE_REGWRITE_BUFFER(ah);
2172 REG_WRITE(ah, AR_NEXT_DTIM,
2173 TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
2174 REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
2176 REG_WRITE(ah, AR_SLEEP1,
2177 SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
2178 | AR_SLEEP1_ASSUME_DTIM);
2180 if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
2181 beacontimeout = (BEACON_TIMEOUT_VAL << 3);
2183 beacontimeout = MIN_BEACON_TIMEOUT_VAL;
2185 REG_WRITE(ah, AR_SLEEP2,
2186 SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
2188 REG_WRITE(ah, AR_TIM_PERIOD, TU_TO_USEC(beaconintval));
2189 REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
2191 REGWRITE_BUFFER_FLUSH(ah);
2193 REG_SET_BIT(ah, AR_TIMER_MODE,
2194 AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
2197 /* TSF Out of Range Threshold */
2198 REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
2200 EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
2202 /*******************/
2203 /* HW Capabilities */
2204 /*******************/
2206 static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
2208 eeprom_chainmask &= chip_chainmask;
2209 if (eeprom_chainmask)
2210 return eeprom_chainmask;
2212 return chip_chainmask;
2216 * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
2217 * @ah: the atheros hardware data structure
2219 * We enable DFS support upstream on chipsets which have passed a series
2220 * of tests. The testing requirements are going to be documented. Desired
2221 * test requirements are documented at:
2223 * http://wireless.kernel.org/en/users/Drivers/ath9k/dfs
2225 * Once a new chipset gets properly tested an individual commit can be used
2226 * to document the testing for DFS for that chipset.
2228 static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
2231 switch (ah->hw_version.macVersion) {
2232 /* AR9580 will likely be our first target to get testing on */
2233 case AR_SREV_VERSION_9580:
2239 int ath9k_hw_fill_cap_info(struct ath_hw *ah)
2241 struct ath9k_hw_capabilities *pCap = &ah->caps;
2242 struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
2243 struct ath_common *common = ath9k_hw_common(ah);
2244 unsigned int chip_chainmask;
2247 u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
2249 eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
2250 regulatory->current_rd = eeval;
2252 if (ah->opmode != NL80211_IFTYPE_AP &&
2253 ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
2254 if (regulatory->current_rd == 0x64 ||
2255 regulatory->current_rd == 0x65)
2256 regulatory->current_rd += 5;
2257 else if (regulatory->current_rd == 0x41)
2258 regulatory->current_rd = 0x43;
2259 ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
2260 regulatory->current_rd);
2263 eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
2264 if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
2266 "no band has been marked as supported in EEPROM\n");
2270 if (eeval & AR5416_OPFLAGS_11A)
2271 pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
2273 if (eeval & AR5416_OPFLAGS_11G)
2274 pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
2276 if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah))
2278 else if (AR_SREV_9462(ah))
2280 else if (!AR_SREV_9280_20_OR_LATER(ah))
2282 else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
2287 pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
2289 * For AR9271 we will temporarilly uses the rx chainmax as read from
2292 if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
2293 !(eeval & AR5416_OPFLAGS_11A) &&
2294 !(AR_SREV_9271(ah)))
2295 /* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
2296 pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
2297 else if (AR_SREV_9100(ah))
2298 pCap->rx_chainmask = 0x7;
2300 /* Use rx_chainmask from EEPROM. */
2301 pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
2303 pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
2304 pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
2305 ah->txchainmask = pCap->tx_chainmask;
2306 ah->rxchainmask = pCap->rx_chainmask;
2308 ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
2310 /* enable key search for every frame in an aggregate */
2311 if (AR_SREV_9300_20_OR_LATER(ah))
2312 ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
2314 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
2316 if (ah->hw_version.devid != AR2427_DEVID_PCIE)
2317 pCap->hw_caps |= ATH9K_HW_CAP_HT;
2319 pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
2321 if (AR_SREV_9271(ah))
2322 pCap->num_gpio_pins = AR9271_NUM_GPIO;
2323 else if (AR_DEVID_7010(ah))
2324 pCap->num_gpio_pins = AR7010_NUM_GPIO;
2325 else if (AR_SREV_9300_20_OR_LATER(ah))
2326 pCap->num_gpio_pins = AR9300_NUM_GPIO;
2327 else if (AR_SREV_9287_11_OR_LATER(ah))
2328 pCap->num_gpio_pins = AR9287_NUM_GPIO;
2329 else if (AR_SREV_9285_12_OR_LATER(ah))
2330 pCap->num_gpio_pins = AR9285_NUM_GPIO;
2331 else if (AR_SREV_9280_20_OR_LATER(ah))
2332 pCap->num_gpio_pins = AR928X_NUM_GPIO;
2334 pCap->num_gpio_pins = AR_NUM_GPIO;
2336 if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
2337 pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
2339 pCap->rts_aggr_limit = (8 * 1024);
2341 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2342 ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
2343 if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
2345 MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
2346 ah->rfkill_polarity =
2347 MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
2349 pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
2352 if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
2353 pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
2355 pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
2357 if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
2358 pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
2360 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
2362 if (AR_SREV_9300_20_OR_LATER(ah)) {
2363 pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
2364 if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah))
2365 pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
2367 pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
2368 pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
2369 pCap->rx_status_len = sizeof(struct ar9003_rxs);
2370 pCap->tx_desc_len = sizeof(struct ar9003_txc);
2371 pCap->txs_len = sizeof(struct ar9003_txs);
2372 if (!ah->config.paprd_disable &&
2373 ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
2374 pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
2376 pCap->tx_desc_len = sizeof(struct ath_desc);
2377 if (AR_SREV_9280_20(ah))
2378 pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
2381 if (AR_SREV_9300_20_OR_LATER(ah))
2382 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
2384 if (AR_SREV_9300_20_OR_LATER(ah))
2385 ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
2387 if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
2388 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
2390 if (AR_SREV_9285(ah))
2391 if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
2393 ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2394 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
2395 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2397 if (AR_SREV_9300_20_OR_LATER(ah)) {
2398 if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
2399 pCap->hw_caps |= ATH9K_HW_CAP_APM;
2403 if (AR_SREV_9330(ah) || AR_SREV_9485(ah)) {
2404 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
2406 * enable the diversity-combining algorithm only when
2407 * both enable_lna_div and enable_fast_div are set
2408 * Table for Diversity
2409 * ant_div_alt_lnaconf bit 0-1
2410 * ant_div_main_lnaconf bit 2-3
2411 * ant_div_alt_gaintb bit 4
2412 * ant_div_main_gaintb bit 5
2413 * enable_ant_div_lnadiv bit 6
2414 * enable_ant_fast_div bit 7
2416 if ((ant_div_ctl1 >> 0x6) == 0x3)
2417 pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
2420 if (AR_SREV_9485_10(ah)) {
2421 pCap->pcie_lcr_extsync_en = true;
2422 pCap->pcie_lcr_offset = 0x80;
2425 if (ath9k_hw_dfs_tested(ah))
2426 pCap->hw_caps |= ATH9K_HW_CAP_DFS;
2428 tx_chainmask = pCap->tx_chainmask;
2429 rx_chainmask = pCap->rx_chainmask;
2430 while (tx_chainmask || rx_chainmask) {
2431 if (tx_chainmask & BIT(0))
2432 pCap->max_txchains++;
2433 if (rx_chainmask & BIT(0))
2434 pCap->max_rxchains++;
2440 if (AR_SREV_9300_20_OR_LATER(ah)) {
2441 ah->enabled_cals |= TX_IQ_CAL;
2442 if (AR_SREV_9485_OR_LATER(ah))
2443 ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
2446 if (AR_SREV_9462(ah)) {
2448 if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
2449 pCap->hw_caps |= ATH9K_HW_CAP_MCI;
2451 if (AR_SREV_9462_20(ah))
2452 pCap->hw_caps |= ATH9K_HW_CAP_RTT;
2460 /****************************/
2461 /* GPIO / RFKILL / Antennae */
2462 /****************************/
2464 static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah,
2468 u32 gpio_shift, tmp;
2471 addr = AR_GPIO_OUTPUT_MUX3;
2473 addr = AR_GPIO_OUTPUT_MUX2;
2475 addr = AR_GPIO_OUTPUT_MUX1;
2477 gpio_shift = (gpio % 6) * 5;
2479 if (AR_SREV_9280_20_OR_LATER(ah)
2480 || (addr != AR_GPIO_OUTPUT_MUX1)) {
2481 REG_RMW(ah, addr, (type << gpio_shift),
2482 (0x1f << gpio_shift));
2484 tmp = REG_READ(ah, addr);
2485 tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
2486 tmp &= ~(0x1f << gpio_shift);
2487 tmp |= (type << gpio_shift);
2488 REG_WRITE(ah, addr, tmp);
2492 void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
2496 BUG_ON(gpio >= ah->caps.num_gpio_pins);
2498 if (AR_DEVID_7010(ah)) {
2500 REG_RMW(ah, AR7010_GPIO_OE,
2501 (AR7010_GPIO_OE_AS_INPUT << gpio_shift),
2502 (AR7010_GPIO_OE_MASK << gpio_shift));
2506 gpio_shift = gpio << 1;
2509 (AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
2510 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2512 EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
2514 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
2516 #define MS_REG_READ(x, y) \
2517 (MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
2519 if (gpio >= ah->caps.num_gpio_pins)
2522 if (AR_DEVID_7010(ah)) {
2524 val = REG_READ(ah, AR7010_GPIO_IN);
2525 return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
2526 } else if (AR_SREV_9300_20_OR_LATER(ah))
2527 return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
2528 AR_GPIO_BIT(gpio)) != 0;
2529 else if (AR_SREV_9271(ah))
2530 return MS_REG_READ(AR9271, gpio) != 0;
2531 else if (AR_SREV_9287_11_OR_LATER(ah))
2532 return MS_REG_READ(AR9287, gpio) != 0;
2533 else if (AR_SREV_9285_12_OR_LATER(ah))
2534 return MS_REG_READ(AR9285, gpio) != 0;
2535 else if (AR_SREV_9280_20_OR_LATER(ah))
2536 return MS_REG_READ(AR928X, gpio) != 0;
2538 return MS_REG_READ(AR, gpio) != 0;
2540 EXPORT_SYMBOL(ath9k_hw_gpio_get);
2542 void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
2547 if (AR_DEVID_7010(ah)) {
2549 REG_RMW(ah, AR7010_GPIO_OE,
2550 (AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
2551 (AR7010_GPIO_OE_MASK << gpio_shift));
2555 ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
2556 gpio_shift = 2 * gpio;
2559 (AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
2560 (AR_GPIO_OE_OUT_DRV << gpio_shift));
2562 EXPORT_SYMBOL(ath9k_hw_cfg_output);
2564 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
2566 if (AR_DEVID_7010(ah)) {
2568 REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
2573 if (AR_SREV_9271(ah))
2576 REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
2579 EXPORT_SYMBOL(ath9k_hw_set_gpio);
2581 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
2583 REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
2585 EXPORT_SYMBOL(ath9k_hw_setantenna);
2587 /*********************/
2588 /* General Operation */
2589 /*********************/
2591 u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
2593 u32 bits = REG_READ(ah, AR_RX_FILTER);
2594 u32 phybits = REG_READ(ah, AR_PHY_ERR);
2596 if (phybits & AR_PHY_ERR_RADAR)
2597 bits |= ATH9K_RX_FILTER_PHYRADAR;
2598 if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
2599 bits |= ATH9K_RX_FILTER_PHYERR;
2603 EXPORT_SYMBOL(ath9k_hw_getrxfilter);
2605 void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
2609 ENABLE_REGWRITE_BUFFER(ah);
2611 if (AR_SREV_9462(ah))
2612 bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
2614 REG_WRITE(ah, AR_RX_FILTER, bits);
2617 if (bits & ATH9K_RX_FILTER_PHYRADAR)
2618 phybits |= AR_PHY_ERR_RADAR;
2619 if (bits & ATH9K_RX_FILTER_PHYERR)
2620 phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
2621 REG_WRITE(ah, AR_PHY_ERR, phybits);
2624 REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2626 REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
2628 REGWRITE_BUFFER_FLUSH(ah);
2630 EXPORT_SYMBOL(ath9k_hw_setrxfilter);
2632 bool ath9k_hw_phy_disable(struct ath_hw *ah)
2634 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
2637 ath9k_hw_init_pll(ah, NULL);
2638 ah->htc_reset_init = true;
2641 EXPORT_SYMBOL(ath9k_hw_phy_disable);
2643 bool ath9k_hw_disable(struct ath_hw *ah)
2645 if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
2648 if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
2651 ath9k_hw_init_pll(ah, NULL);
2654 EXPORT_SYMBOL(ath9k_hw_disable);
2656 static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
2658 enum eeprom_param gain_param;
2660 if (IS_CHAN_2GHZ(chan))
2661 gain_param = EEP_ANTENNA_GAIN_2G;
2663 gain_param = EEP_ANTENNA_GAIN_5G;
2665 return ah->eep_ops->get_eeprom(ah, gain_param);
2668 void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
2671 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2672 struct ieee80211_channel *channel;
2673 int chan_pwr, new_pwr, max_gain;
2674 int ant_gain, ant_reduction = 0;
2679 channel = chan->chan;
2680 chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
2681 new_pwr = min_t(int, chan_pwr, reg->power_limit);
2682 max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
2684 ant_gain = get_antenna_gain(ah, chan);
2685 if (ant_gain > max_gain)
2686 ant_reduction = ant_gain - max_gain;
2688 ah->eep_ops->set_txpower(ah, chan,
2689 ath9k_regd_get_ctl(reg, chan),
2690 ant_reduction, new_pwr, test);
2693 void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
2695 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
2696 struct ath9k_channel *chan = ah->curchan;
2697 struct ieee80211_channel *channel = chan->chan;
2699 reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
2701 channel->max_power = MAX_RATE_POWER / 2;
2703 ath9k_hw_apply_txpower(ah, chan, test);
2706 channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
2708 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
2710 void ath9k_hw_setopmode(struct ath_hw *ah)
2712 ath9k_hw_set_operating_mode(ah, ah->opmode);
2714 EXPORT_SYMBOL(ath9k_hw_setopmode);
2716 void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
2718 REG_WRITE(ah, AR_MCAST_FIL0, filter0);
2719 REG_WRITE(ah, AR_MCAST_FIL1, filter1);
2721 EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
2723 void ath9k_hw_write_associd(struct ath_hw *ah)
2725 struct ath_common *common = ath9k_hw_common(ah);
2727 REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
2728 REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
2729 ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
2731 EXPORT_SYMBOL(ath9k_hw_write_associd);
2733 #define ATH9K_MAX_TSF_READ 10
2735 u64 ath9k_hw_gettsf64(struct ath_hw *ah)
2737 u32 tsf_lower, tsf_upper1, tsf_upper2;
2740 tsf_upper1 = REG_READ(ah, AR_TSF_U32);
2741 for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
2742 tsf_lower = REG_READ(ah, AR_TSF_L32);
2743 tsf_upper2 = REG_READ(ah, AR_TSF_U32);
2744 if (tsf_upper2 == tsf_upper1)
2746 tsf_upper1 = tsf_upper2;
2749 WARN_ON( i == ATH9K_MAX_TSF_READ );
2751 return (((u64)tsf_upper1 << 32) | tsf_lower);
2753 EXPORT_SYMBOL(ath9k_hw_gettsf64);
2755 void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
2757 REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
2758 REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
2760 EXPORT_SYMBOL(ath9k_hw_settsf64);
2762 void ath9k_hw_reset_tsf(struct ath_hw *ah)
2764 if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
2765 AH_TSF_WRITE_TIMEOUT))
2766 ath_dbg(ath9k_hw_common(ah), RESET,
2767 "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
2769 REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
2771 EXPORT_SYMBOL(ath9k_hw_reset_tsf);
2773 void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)
2776 ah->misc_mode |= AR_PCU_TX_ADD_TSF;
2778 ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
2780 EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
2782 void ath9k_hw_set11nmac2040(struct ath_hw *ah)
2784 struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
2787 if (conf_is_ht40(conf) && !ah->config.cwm_ignore_extcca)
2788 macmode = AR_2040_JOINED_RX_CLEAR;
2792 REG_WRITE(ah, AR_2040_MODE, macmode);
2795 /* HW Generic timers configuration */
2797 static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
2799 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2800 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2801 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2802 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2803 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2804 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2805 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2806 {AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
2807 {AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
2808 {AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
2809 AR_NDP2_TIMER_MODE, 0x0002},
2810 {AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
2811 AR_NDP2_TIMER_MODE, 0x0004},
2812 {AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
2813 AR_NDP2_TIMER_MODE, 0x0008},
2814 {AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
2815 AR_NDP2_TIMER_MODE, 0x0010},
2816 {AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
2817 AR_NDP2_TIMER_MODE, 0x0020},
2818 {AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
2819 AR_NDP2_TIMER_MODE, 0x0040},
2820 {AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
2821 AR_NDP2_TIMER_MODE, 0x0080}
2824 /* HW generic timer primitives */
2826 /* compute and clear index of rightmost 1 */
2827 static u32 rightmost_index(struct ath_gen_timer_table *timer_table, u32 *mask)
2837 return timer_table->gen_timer_index[b];
2840 u32 ath9k_hw_gettsf32(struct ath_hw *ah)
2842 return REG_READ(ah, AR_TSF_L32);
2844 EXPORT_SYMBOL(ath9k_hw_gettsf32);
2846 struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
2847 void (*trigger)(void *),
2848 void (*overflow)(void *),
2852 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2853 struct ath_gen_timer *timer;
2855 timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
2857 if (timer == NULL) {
2858 ath_err(ath9k_hw_common(ah),
2859 "Failed to allocate memory for hw timer[%d]\n",
2864 /* allocate a hardware generic timer slot */
2865 timer_table->timers[timer_index] = timer;
2866 timer->index = timer_index;
2867 timer->trigger = trigger;
2868 timer->overflow = overflow;
2873 EXPORT_SYMBOL(ath_gen_timer_alloc);
2875 void ath9k_hw_gen_timer_start(struct ath_hw *ah,
2876 struct ath_gen_timer *timer,
2880 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2881 u32 tsf, timer_next;
2883 BUG_ON(!timer_period);
2885 set_bit(timer->index, &timer_table->timer_mask.timer_bits);
2887 tsf = ath9k_hw_gettsf32(ah);
2889 timer_next = tsf + trig_timeout;
2891 ath_dbg(ath9k_hw_common(ah), HWTIMER,
2892 "current tsf %x period %x timer_next %x\n",
2893 tsf, timer_period, timer_next);
2896 * Program generic timer registers
2898 REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
2900 REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
2902 REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2903 gen_tmr_configuration[timer->index].mode_mask);
2905 if (AR_SREV_9462(ah)) {
2907 * Starting from AR9462, each generic timer can select which tsf
2908 * to use. But we still follow the old rule, 0 - 7 use tsf and
2911 if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
2912 REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
2913 (1 << timer->index));
2915 REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
2916 (1 << timer->index));
2919 /* Enable both trigger and thresh interrupt masks */
2920 REG_SET_BIT(ah, AR_IMR_S5,
2921 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2922 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2924 EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
2926 void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
2928 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2930 if ((timer->index < AR_FIRST_NDP_TIMER) ||
2931 (timer->index >= ATH_MAX_GEN_TIMER)) {
2935 /* Clear generic timer enable bits. */
2936 REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
2937 gen_tmr_configuration[timer->index].mode_mask);
2939 /* Disable both trigger and thresh interrupt masks */
2940 REG_CLR_BIT(ah, AR_IMR_S5,
2941 (SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
2942 SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
2944 clear_bit(timer->index, &timer_table->timer_mask.timer_bits);
2946 EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
2948 void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
2950 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2952 /* free the hardware generic timer slot */
2953 timer_table->timers[timer->index] = NULL;
2956 EXPORT_SYMBOL(ath_gen_timer_free);
2959 * Generic Timer Interrupts handling
2961 void ath_gen_timer_isr(struct ath_hw *ah)
2963 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
2964 struct ath_gen_timer *timer;
2965 struct ath_common *common = ath9k_hw_common(ah);
2966 u32 trigger_mask, thresh_mask, index;
2968 /* get hardware generic timer interrupt status */
2969 trigger_mask = ah->intr_gen_timer_trigger;
2970 thresh_mask = ah->intr_gen_timer_thresh;
2971 trigger_mask &= timer_table->timer_mask.val;
2972 thresh_mask &= timer_table->timer_mask.val;
2974 trigger_mask &= ~thresh_mask;
2976 while (thresh_mask) {
2977 index = rightmost_index(timer_table, &thresh_mask);
2978 timer = timer_table->timers[index];
2980 ath_dbg(common, HWTIMER, "TSF overflow for Gen timer %d\n",
2982 timer->overflow(timer->arg);
2985 while (trigger_mask) {
2986 index = rightmost_index(timer_table, &trigger_mask);
2987 timer = timer_table->timers[index];
2989 ath_dbg(common, HWTIMER,
2990 "Gen timer[%d] trigger\n", index);
2991 timer->trigger(timer->arg);
2994 EXPORT_SYMBOL(ath_gen_timer_isr);
3003 } ath_mac_bb_names[] = {
3004 /* Devices with external radios */
3005 { AR_SREV_VERSION_5416_PCI, "5416" },
3006 { AR_SREV_VERSION_5416_PCIE, "5418" },
3007 { AR_SREV_VERSION_9100, "9100" },
3008 { AR_SREV_VERSION_9160, "9160" },
3009 /* Single-chip solutions */
3010 { AR_SREV_VERSION_9280, "9280" },
3011 { AR_SREV_VERSION_9285, "9285" },
3012 { AR_SREV_VERSION_9287, "9287" },
3013 { AR_SREV_VERSION_9271, "9271" },
3014 { AR_SREV_VERSION_9300, "9300" },
3015 { AR_SREV_VERSION_9330, "9330" },
3016 { AR_SREV_VERSION_9340, "9340" },
3017 { AR_SREV_VERSION_9485, "9485" },
3018 { AR_SREV_VERSION_9462, "9462" },
3021 /* For devices with external radios */
3025 } ath_rf_names[] = {
3027 { AR_RAD5133_SREV_MAJOR, "5133" },
3028 { AR_RAD5122_SREV_MAJOR, "5122" },
3029 { AR_RAD2133_SREV_MAJOR, "2133" },
3030 { AR_RAD2122_SREV_MAJOR, "2122" }
3034 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
3036 static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
3040 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
3041 if (ath_mac_bb_names[i].version == mac_bb_version) {
3042 return ath_mac_bb_names[i].name;
3050 * Return the RF name. "????" is returned if the RF is unknown.
3051 * Used for devices with external radios.
3053 static const char *ath9k_hw_rf_name(u16 rf_version)
3057 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
3058 if (ath_rf_names[i].version == rf_version) {
3059 return ath_rf_names[i].name;
3066 void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
3070 /* chipsets >= AR9280 are single-chip */
3071 if (AR_SREV_9280_20_OR_LATER(ah)) {
3072 used = snprintf(hw_name, len,
3073 "Atheros AR%s Rev:%x",
3074 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3075 ah->hw_version.macRev);
3078 used = snprintf(hw_name, len,
3079 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
3080 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
3081 ah->hw_version.macRev,
3082 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev &
3083 AR_RADIO_SREV_MAJOR)),
3084 ah->hw_version.phyRev);
3087 hw_name[used] = '\0';
3089 EXPORT_SYMBOL(ath9k_hw_name);