main.c 40.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/*
 * Copyright (c) 2008 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* mac80211 and PCI callbacks */

#include <linux/nl80211.h>
#include "core.h"
21
#include "reg.h"
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

#define ATH_PCI_VERSION "0.1"

static char *dev_info = "ath9k";

MODULE_AUTHOR("Atheros Communications");
MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
MODULE_LICENSE("Dual BSD/GPL");

static struct pci_device_id ath_pci_id_table[] __devinitdata = {
	{ PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
	{ 0 }
};

41 42
static void ath_detach(struct ath_softc *sc);

43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
static int ath_get_channel(struct ath_softc *sc,
			   struct ieee80211_channel *chan)
{
	int i;

	for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
		if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
			return i;
	}

	return -1;
}

static u32 ath_get_extchanmode(struct ath_softc *sc,
				     struct ieee80211_channel *chan)
{
	u32 chanmode = 0;
	u8 ext_chan_offset = sc->sc_ht_info.ext_chan_offset;
	enum ath9k_ht_macmode tx_chan_width = sc->sc_ht_info.tx_chan_width;

	switch (chan->band) {
	case IEEE80211_BAND_2GHZ:
J
Johannes Berg 已提交
65
		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
66 67
		    (tx_chan_width == ATH9K_HT_MACMODE_20))
			chanmode = CHANNEL_G_HT20;
J
Johannes Berg 已提交
68
		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
69 70
		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
			chanmode = CHANNEL_G_HT40PLUS;
J
Johannes Berg 已提交
71
		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
72 73 74 75
		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
			chanmode = CHANNEL_G_HT40MINUS;
		break;
	case IEEE80211_BAND_5GHZ:
J
Johannes Berg 已提交
76
		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
77 78
		    (tx_chan_width == ATH9K_HT_MACMODE_20))
			chanmode = CHANNEL_A_HT20;
J
Johannes Berg 已提交
79
		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
80 81
		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
			chanmode = CHANNEL_A_HT40PLUS;
J
Johannes Berg 已提交
82
		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
			chanmode = CHANNEL_A_HT40MINUS;
		break;
	default:
		break;
	}

	return chanmode;
}


static int ath_setkey_tkip(struct ath_softc *sc,
			   struct ieee80211_key_conf *key,
			   struct ath9k_keyval *hk,
			   const u8 *addr)
{
	u8 *key_rxmic = NULL;
	u8 *key_txmic = NULL;

	key_txmic = key->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
	key_rxmic = key->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;

	if (addr == NULL) {
		/* Group key installation */
		memcpy(hk->kv_mic,  key_rxmic, sizeof(hk->kv_mic));
		return ath_keyset(sc, key->keyidx, hk, addr);
	}
	if (!sc->sc_splitmic) {
		/*
		 * data key goes at first index,
		 * the hal handles the MIC keys at index+64.
		 */
		memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
		memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
		return ath_keyset(sc, key->keyidx, hk, addr);
	}
	/*
	 * TX key goes at first index, RX key at +32.
	 * The hal handles the MIC keys at index+64.
	 */
	memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
	if (!ath_keyset(sc, key->keyidx, hk, NULL)) {
		/* Txmic entry failed. No need to proceed further */
		DPRINTF(sc, ATH_DBG_KEYCACHE,
			"%s Setting TX MIC Key Failed\n", __func__);
		return 0;
	}

	memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
	/* XXX delete tx key on failure? */
	return ath_keyset(sc, key->keyidx+32, hk, addr);
}

static int ath_key_config(struct ath_softc *sc,
			  const u8 *addr,
			  struct ieee80211_key_conf *key)
{
	struct ieee80211_vif *vif;
	struct ath9k_keyval hk;
	const u8 *mac = NULL;
	int ret = 0;
144
	enum nl80211_iftype opmode;
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167

	memset(&hk, 0, sizeof(hk));

	switch (key->alg) {
	case ALG_WEP:
		hk.kv_type = ATH9K_CIPHER_WEP;
		break;
	case ALG_TKIP:
		hk.kv_type = ATH9K_CIPHER_TKIP;
		break;
	case ALG_CCMP:
		hk.kv_type = ATH9K_CIPHER_AES_CCM;
		break;
	default:
		return -EINVAL;
	}

	hk.kv_len  = key->keylen;
	memcpy(hk.kv_val, key->key, key->keylen);

	if (!sc->sc_vaps[0])
		return -EIO;

S
Sujith 已提交
168
	vif = sc->sc_vaps[0];
169 170 171 172 173 174 175 176 177 178 179 180 181 182
	opmode = vif->type;

	/*
	 *  Strategy:
	 *   For _M_STA mc tx, we will not setup a key at all since we never
	 *   tx mc.
	 *   _M_STA mc rx, we will use the keyID.
	 *   for _M_IBSS mc tx, we will use the keyID, and no macaddr.
	 *   for _M_IBSS mc rx, we will alloc a slot and plumb the mac of the
	 *   peer node. BUT we will plumb a cleartext key so that we can do
	 *   perSta default key table lookup in software.
	 */
	if (is_broadcast_ether_addr(addr)) {
		switch (opmode) {
183
		case NL80211_IFTYPE_STATION:
184 185 186 187
			/* default key:  could be group WPA key
			 * or could be static WEP key */
			mac = NULL;
			break;
188
		case NL80211_IFTYPE_ADHOC:
189
			break;
190
		case NL80211_IFTYPE_AP:
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
			break;
		default:
			ASSERT(0);
			break;
		}
	} else {
		mac = addr;
	}

	if (key->alg == ALG_TKIP)
		ret = ath_setkey_tkip(sc, key, &hk, mac);
	else
		ret = ath_keyset(sc, key->keyidx, &hk, mac);

	if (!ret)
		return -EIO;

	return 0;
}

static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
{
	int freeslot;

S
Sujith 已提交
215
	freeslot = (key->keyidx >= 4) ? 1 : 0;
216 217 218
	ath_key_reset(sc, key->keyidx, freeslot);
}

J
Johannes Berg 已提交
219
static void setup_ht_cap(struct ieee80211_sta_ht_cap *ht_info)
220
{
S
Sujith 已提交
221 222
#define	ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3	/* 2 ^ 16 */
#define	ATH9K_HT_CAP_MPDUDENSITY_8 0x6		/* 8 usec */
223

J
Johannes Berg 已提交
224 225 226 227 228
	ht_info->ht_supported = true;
	ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
		       IEEE80211_HT_CAP_SM_PS |
		       IEEE80211_HT_CAP_SGI_40 |
		       IEEE80211_HT_CAP_DSSSCCK40;
229

S
Sujith 已提交
230 231
	ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
	ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;
J
Johannes Berg 已提交
232 233 234 235 236
	/* set up supported mcs set */
	memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
	ht_info->mcs.rx_mask[0] = 0xff;
	ht_info->mcs.rx_mask[1] = 0xff;
	ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
237 238
}

239 240
static void ath9k_ht_conf(struct ath_softc *sc,
			  struct ieee80211_bss_conf *bss_conf)
241
{
242
	struct ath_ht_info *ht_info = &sc->sc_ht_info;
243

J
Johannes Berg 已提交
244 245 246 247
	if (sc->hw->conf.ht.enabled) {
		ht_info->ext_chan_offset = bss_conf->ht.secondary_channel_offset;

		if (bss_conf->ht.width_40_ok)
248 249 250
			ht_info->tx_chan_width = ATH9K_HT_MACMODE_2040;
		else
			ht_info->tx_chan_width = ATH9K_HT_MACMODE_20;
251

252
		ath9k_hw_set11nmac2040(sc->sc_ah, ht_info->tx_chan_width);
253 254 255
	}
}

256
static void ath9k_bss_assoc_info(struct ath_softc *sc,
S
Sujith 已提交
257
				 struct ieee80211_vif *vif,
258
				 struct ieee80211_bss_conf *bss_conf)
259
{
260 261
	struct ieee80211_hw *hw = sc->hw;
	struct ieee80211_channel *curchan = hw->conf.channel;
S
Sujith 已提交
262
	struct ath_vap *avp = (void *)vif->drv_priv;
263
	int pos;
264

265 266 267 268
	if (bss_conf->assoc) {
		DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n",
			__func__,
			bss_conf->aid);
269

270 271 272 273 274 275
		/* New association, store aid */
		if (avp->av_opmode == ATH9K_M_STA) {
			sc->sc_curaid = bss_conf->aid;
			ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
					       sc->sc_curaid);
		}
276

277 278 279
		/* Configure the beacon */
		ath_beacon_config(sc, 0);
		sc->sc_flags |= SC_OP_BEACONS;
280

281 282 283 284 285
		/* Reset rssi stats */
		sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
		sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
		sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
		sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
286

287
		/* Update chainmask */
J
Johannes Berg 已提交
288
		ath_update_chainmask(sc, hw->conf.ht.enabled);
289 290

		DPRINTF(sc, ATH_DBG_CONFIG,
J
Johannes Berg 已提交
291
			"%s: bssid %pM aid 0x%x\n",
292
			__func__,
J
Johannes Berg 已提交
293
			sc->sc_curbssid, sc->sc_curaid);
294

295 296 297
		DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
			__func__,
			curchan->center_freq);
298

299 300 301 302 303 304
		pos = ath_get_channel(sc, curchan);
		if (pos == -1) {
			DPRINTF(sc, ATH_DBG_FATAL,
				"%s: Invalid channel\n", __func__);
			return;
		}
305

J
Johannes Berg 已提交
306
		if (hw->conf.ht.enabled)
307 308 309 310 311 312
			sc->sc_ah->ah_channels[pos].chanmode =
				ath_get_extchanmode(sc, curchan);
		else
			sc->sc_ah->ah_channels[pos].chanmode =
				(curchan->band == IEEE80211_BAND_2GHZ) ?
				CHANNEL_G : CHANNEL_A;
313

314 315 316 317 318
		/* set h/w channel */
		if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
			DPRINTF(sc, ATH_DBG_FATAL,
				"%s: Unable to set channel\n",
				__func__);
319 320 321 322
		/* Start ANI */
		mod_timer(&sc->sc_ani.timer,
			jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));

323 324 325 326
	} else {
		DPRINTF(sc, ATH_DBG_CONFIG,
		"%s: Bss Info DISSOC\n", __func__);
		sc->sc_curaid = 0;
327
	}
328
}
329

330 331 332 333 334
void ath_get_beaconconfig(struct ath_softc *sc,
			  int if_id,
			  struct ath_beacon_config *conf)
{
	struct ieee80211_hw *hw = sc->hw;
335

336
	/* fill in beacon config data */
337

338 339 340 341
	conf->beacon_interval = hw->conf.beacon_int;
	conf->listen_interval = 100;
	conf->dtim_count = 1;
	conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval;
342 343
}

344 345 346
/********************************/
/*	 LED functions		*/
/********************************/
347

348 349 350 351 352
static void ath_led_brightness(struct led_classdev *led_cdev,
			       enum led_brightness brightness)
{
	struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
	struct ath_softc *sc = led->sc;
353

354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369
	switch (brightness) {
	case LED_OFF:
		if (led->led_type == ATH_LED_ASSOC ||
		    led->led_type == ATH_LED_RADIO)
			sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
		ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
				(led->led_type == ATH_LED_RADIO) ? 1 :
				!!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
		break;
	case LED_FULL:
		if (led->led_type == ATH_LED_ASSOC)
			sc->sc_flags |= SC_OP_LED_ASSOCIATED;
		ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
		break;
	default:
		break;
370
	}
371
}
372

373 374 375 376
static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
			    char *trigger)
{
	int ret;
377

378 379 380 381
	led->sc = sc;
	led->led_cdev.name = led->name;
	led->led_cdev.default_trigger = trigger;
	led->led_cdev.brightness_set = ath_led_brightness;
382

383 384 385 386 387 388 389 390
	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
	if (ret)
		DPRINTF(sc, ATH_DBG_FATAL,
			"Failed to register led:%s", led->name);
	else
		led->registered = 1;
	return ret;
}
391

392 393 394 395 396
static void ath_unregister_led(struct ath_led *led)
{
	if (led->registered) {
		led_classdev_unregister(&led->led_cdev);
		led->registered = 0;
397 398 399
	}
}

400
static void ath_deinit_leds(struct ath_softc *sc)
401
{
402 403 404 405 406 407 408
	ath_unregister_led(&sc->assoc_led);
	sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
	ath_unregister_led(&sc->tx_led);
	ath_unregister_led(&sc->rx_led);
	ath_unregister_led(&sc->radio_led);
	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
}
409

410 411 412 413
static void ath_init_leds(struct ath_softc *sc)
{
	char *trigger;
	int ret;
414

415 416 417 418 419
	/* Configure gpio 1 for output */
	ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	/* LED off, active low */
	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
S
Sujith 已提交
420

421 422 423 424 425 426 427
	trigger = ieee80211_get_radio_led_name(sc->hw);
	snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
		"ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->radio_led, trigger);
	sc->radio_led.led_type = ATH_LED_RADIO;
	if (ret)
		goto fail;
S
Sujith 已提交
428

429 430 431 432 433 434 435
	trigger = ieee80211_get_assoc_led_name(sc->hw);
	snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
		"ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->assoc_led, trigger);
	sc->assoc_led.led_type = ATH_LED_ASSOC;
	if (ret)
		goto fail;
436

437 438 439 440 441 442 443
	trigger = ieee80211_get_tx_led_name(sc->hw);
	snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
		"ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->tx_led, trigger);
	sc->tx_led.led_type = ATH_LED_TX;
	if (ret)
		goto fail;
444

445 446 447 448 449 450 451
	trigger = ieee80211_get_rx_led_name(sc->hw);
	snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
		"ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->rx_led, trigger);
	sc->rx_led.led_type = ATH_LED_RX;
	if (ret)
		goto fail;
452

453 454 455 456
	return;

fail:
	ath_deinit_leds(sc);
457 458
}

459
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
S
Sujith 已提交
460

461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660
/*******************/
/*	Rfkill	   */
/*******************/

static void ath_radio_enable(struct ath_softc *sc)
{
	struct ath_hal *ah = sc->sc_ah;
	int status;

	spin_lock_bh(&sc->sc_resetlock);
	if (!ath9k_hw_reset(ah, ah->ah_curchan,
			    sc->sc_ht_info.tx_chan_width,
			    sc->sc_tx_chainmask,
			    sc->sc_rx_chainmask,
			    sc->sc_ht_extprotspacing,
			    false, &status)) {
		DPRINTF(sc, ATH_DBG_FATAL,
			"%s: unable to reset channel %u (%uMhz) "
			"flags 0x%x hal status %u\n", __func__,
			ath9k_hw_mhz2ieee(ah,
					  ah->ah_curchan->channel,
					  ah->ah_curchan->channelFlags),
			ah->ah_curchan->channel,
			ah->ah_curchan->channelFlags, status);
	}
	spin_unlock_bh(&sc->sc_resetlock);

	ath_update_txpow(sc);
	if (ath_startrecv(sc) != 0) {
		DPRINTF(sc, ATH_DBG_FATAL,
			"%s: unable to restart recv logic\n", __func__);
		return;
	}

	if (sc->sc_flags & SC_OP_BEACONS)
		ath_beacon_config(sc, ATH_IF_ID_ANY);	/* restart beacons */

	/* Re-Enable  interrupts */
	ath9k_hw_set_interrupts(ah, sc->sc_imask);

	/* Enable LED */
	ath9k_hw_cfg_output(ah, ATH_LED_PIN,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);

	ieee80211_wake_queues(sc->hw);
}

static void ath_radio_disable(struct ath_softc *sc)
{
	struct ath_hal *ah = sc->sc_ah;
	int status;


	ieee80211_stop_queues(sc->hw);

	/* Disable LED */
	ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
	ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);

	/* Disable interrupts */
	ath9k_hw_set_interrupts(ah, 0);

	ath_draintxq(sc, false);	/* clear pending tx frames */
	ath_stoprecv(sc);		/* turn off frame recv */
	ath_flushrecv(sc);		/* flush recv queue */

	spin_lock_bh(&sc->sc_resetlock);
	if (!ath9k_hw_reset(ah, ah->ah_curchan,
			    sc->sc_ht_info.tx_chan_width,
			    sc->sc_tx_chainmask,
			    sc->sc_rx_chainmask,
			    sc->sc_ht_extprotspacing,
			    false, &status)) {
		DPRINTF(sc, ATH_DBG_FATAL,
			"%s: unable to reset channel %u (%uMhz) "
			"flags 0x%x hal status %u\n", __func__,
			ath9k_hw_mhz2ieee(ah,
				ah->ah_curchan->channel,
				ah->ah_curchan->channelFlags),
			ah->ah_curchan->channel,
			ah->ah_curchan->channelFlags, status);
	}
	spin_unlock_bh(&sc->sc_resetlock);

	ath9k_hw_phy_disable(ah);
	ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
}

static bool ath_is_rfkill_set(struct ath_softc *sc)
{
	struct ath_hal *ah = sc->sc_ah;

	return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
				  ah->ah_rfkill_polarity;
}

/* h/w rfkill poll function */
static void ath_rfkill_poll(struct work_struct *work)
{
	struct ath_softc *sc = container_of(work, struct ath_softc,
					    rf_kill.rfkill_poll.work);
	bool radio_on;

	if (sc->sc_flags & SC_OP_INVALID)
		return;

	radio_on = !ath_is_rfkill_set(sc);

	/*
	 * enable/disable radio only when there is a
	 * state change in RF switch
	 */
	if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
		enum rfkill_state state;

		if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
			state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
				: RFKILL_STATE_HARD_BLOCKED;
		} else if (radio_on) {
			ath_radio_enable(sc);
			state = RFKILL_STATE_UNBLOCKED;
		} else {
			ath_radio_disable(sc);
			state = RFKILL_STATE_HARD_BLOCKED;
		}

		if (state == RFKILL_STATE_HARD_BLOCKED)
			sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
		else
			sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;

		rfkill_force_state(sc->rf_kill.rfkill, state);
	}

	queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
			   msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
}

/* s/w rfkill handler */
static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
{
	struct ath_softc *sc = data;

	switch (state) {
	case RFKILL_STATE_SOFT_BLOCKED:
		if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
		    SC_OP_RFKILL_SW_BLOCKED)))
			ath_radio_disable(sc);
		sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
		return 0;
	case RFKILL_STATE_UNBLOCKED:
		if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
			sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
			if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
				DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
					"radio as it is disabled by h/w \n");
				return -EPERM;
			}
			ath_radio_enable(sc);
		}
		return 0;
	default:
		return -EINVAL;
	}
}

/* Init s/w rfkill */
static int ath_init_sw_rfkill(struct ath_softc *sc)
{
	sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
					     RFKILL_TYPE_WLAN);
	if (!sc->rf_kill.rfkill) {
		DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
		return -ENOMEM;
	}

	snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
		"ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
	sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
	sc->rf_kill.rfkill->data = sc;
	sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
	sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
	sc->rf_kill.rfkill->user_claim_unsupported = 1;

	return 0;
}

/* Deinitialize rfkill */
static void ath_deinit_rfkill(struct ath_softc *sc)
{
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);

	if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
		rfkill_unregister(sc->rf_kill.rfkill);
		sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
		sc->rf_kill.rfkill = NULL;
	}
}
S
Sujith 已提交
661 662 663 664 665 666 667 668 669 670 671 672 673 674

static int ath_start_rfkill_poll(struct ath_softc *sc)
{
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		queue_delayed_work(sc->hw->workqueue,
				   &sc->rf_kill.rfkill_poll, 0);

	if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
		if (rfkill_register(sc->rf_kill.rfkill)) {
			DPRINTF(sc, ATH_DBG_FATAL,
				"Unable to register rfkill\n");
			rfkill_free(sc->rf_kill.rfkill);

			/* Deinitialize the device */
675
			ath_detach(sc);
S
Sujith 已提交
676 677 678 679 680
			if (sc->pdev->irq)
				free_irq(sc->pdev->irq, sc);
			pci_iounmap(sc->pdev, sc->mem);
			pci_release_region(sc->pdev, 0);
			pci_disable_device(sc->pdev);
681
			ieee80211_free_hw(sc->hw);
S
Sujith 已提交
682 683 684 685 686 687 688 689
			return -EIO;
		} else {
			sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
		}
	}

	return 0;
}
690 691
#endif /* CONFIG_RFKILL */

S
Sujith 已提交
692
static void ath_detach(struct ath_softc *sc)
693
{
694
	struct ieee80211_hw *hw = sc->hw;
S
Sujith 已提交
695
	int i = 0;
696

697
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
698

699
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
700 701
	ath_deinit_rfkill(sc);
#endif
702 703 704 705
	ath_deinit_leds(sc);

	ieee80211_unregister_hw(hw);

706
	ath_rate_control_unregister();
707

708 709
	ath_rx_cleanup(sc);
	ath_tx_cleanup(sc);
710

S
Sujith 已提交
711 712
	tasklet_kill(&sc->intr_tq);
	tasklet_kill(&sc->bcon_tasklet);
713

S
Sujith 已提交
714 715
	if (!(sc->sc_flags & SC_OP_INVALID))
		ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
716

S
Sujith 已提交
717 718 719 720 721 722
	/* cleanup tx queues */
	for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
		if (ATH_TXQ_SETUP(sc, i))
			ath_tx_cleanupq(sc, &sc->sc_txq[i]);

	ath9k_hw_detach(sc->sc_ah);
723 724
}

S
Sujith 已提交
725
static int ath_attach(u16 devid, struct ath_softc *sc)
726
{
727 728
	struct ieee80211_hw *hw = sc->hw;
	int error = 0;
729

730
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
731

732 733 734
	error = ath_init(devid, sc);
	if (error != 0)
		return error;
735

736
	/* get mac address from hardware and set in mac80211 */
737

738
	SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
739

S
Sujith 已提交
740 741 742 743
	hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
		IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
		IEEE80211_HW_SIGNAL_DBM |
		IEEE80211_HW_AMPDU_AGGREGATION;
744

S
Sujith 已提交
745 746 747 748
	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC);
749

750
	hw->queues = 4;
S
Sujith 已提交
751 752
	hw->max_rates = 4;
	hw->max_rate_tries = ATH_11N_TXMAXTRY;
S
Sujith 已提交
753
	hw->sta_data_size = sizeof(struct ath_node);
S
Sujith 已提交
754
	hw->vif_data_size = sizeof(struct ath_vap);
755

756 757 758 759 760 761 762 763 764 765
	/* Register rate control */
	hw->rate_control_algorithm = "ath9k_rate_control";
	error = ath_rate_control_register();
	if (error != 0) {
		DPRINTF(sc, ATH_DBG_FATAL,
			"%s: Unable to register rate control "
			"algorithm:%d\n", __func__, error);
		ath_rate_control_unregister();
		goto bad;
	}
766

S
Sujith 已提交
767 768 769 770 771 772 773 774 775 776 777
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) {
		setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
		if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes))
			setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
	}

	hw->wiphy->bands[IEEE80211_BAND_2GHZ] =	&sc->sbands[IEEE80211_BAND_2GHZ];
	if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes))
		hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
			&sc->sbands[IEEE80211_BAND_5GHZ];

778 779 780 781
	/* initialize tx/rx engine */
	error = ath_tx_init(sc, ATH_TXBUF);
	if (error != 0)
		goto detach;
782

783 784 785
	error = ath_rx_init(sc, ATH_RXBUF);
	if (error != 0)
		goto detach;
786

787
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
788 789 790 791 792 793 794 795 796
	/* Initialze h/w Rfkill */
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);

	/* Initialize s/w rfkill */
	if (ath_init_sw_rfkill(sc))
		goto detach;
#endif

797 798 799 800 801
	error = ieee80211_register_hw(hw);
	if (error != 0) {
		ath_rate_control_unregister();
		goto bad;
	}
802

803 804
	/* Initialize LED control */
	ath_init_leds(sc);
805 806 807 808 809 810

	return 0;
detach:
	ath_detach(sc);
bad:
	return error;
811 812
}

813
static int ath9k_start(struct ieee80211_hw *hw)
814 815
{
	struct ath_softc *sc = hw->priv;
816 817
	struct ieee80211_channel *curchan = hw->conf.channel;
	int error = 0, pos;
818

819 820
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
		"initial channel: %d MHz\n", __func__, curchan->center_freq);
821

822 823
	memset(&sc->sc_ht_info, 0, sizeof(struct ath_ht_info));

824
	/* setup initial channel */
825

826 827 828
	pos = ath_get_channel(sc, curchan);
	if (pos == -1) {
		DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
S
Sujith 已提交
829 830
		error = -EINVAL;
		goto exit;
831 832
	}

833 834 835 836 837 838 839
	sc->sc_ah->ah_channels[pos].chanmode =
		(curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;

	error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
	if (error) {
		DPRINTF(sc, ATH_DBG_FATAL,
			"%s: Unable to complete ath_open\n", __func__);
S
Sujith 已提交
840
		goto exit;
841
	}
842

843
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
S
Sujith 已提交
844
	error = ath_start_rfkill_poll(sc);
845 846
#endif

S
Sujith 已提交
847 848
exit:
	return error;
849 850
}

851 852
static int ath9k_tx(struct ieee80211_hw *hw,
		    struct sk_buff *skb)
853
{
S
Sujith 已提交
854
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
855
	struct ath_softc *sc = hw->priv;
S
Sujith 已提交
856
	struct ath_tx_control txctl;
857
	int hdrlen, padsize;
S
Sujith 已提交
858 859

	memset(&txctl, 0, sizeof(struct ath_tx_control));
860

861 862 863 864 865 866 867 868 869 870 871 872
	/*
	 * As a temporary workaround, assign seq# here; this will likely need
	 * to be cleaned up to work better with Beacon transmission and virtual
	 * BSSes.
	 */
	if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
		struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
		if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
			sc->seq_no += 0x10;
		hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
		hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
	}
873

874 875 876 877 878 879 880 881 882 883
	/* Add the padding after the header if this is not already done */
	hdrlen = ieee80211_get_hdrlen_from_skb(skb);
	if (hdrlen & 3) {
		padsize = hdrlen % 4;
		if (skb_headroom(skb) < padsize)
			return -1;
		skb_push(skb, padsize);
		memmove(skb->data, skb->data + padsize, hdrlen);
	}

S
Sujith 已提交
884 885 886 887 888 889
	/* Check if a tx queue is available */

	txctl.txq = ath_test_get_txq(sc, skb);
	if (!txctl.txq)
		goto exit;

890 891 892 893
	DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
		__func__,
		skb);

S
Sujith 已提交
894
	if (ath_tx_start(sc, skb, &txctl) != 0) {
895
		DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
S
Sujith 已提交
896
		goto exit;
897 898
	}

S
Sujith 已提交
899 900 901
	return 0;
exit:
	dev_kfree_skb_any(skb);
902
	return 0;
903 904
}

905
static void ath9k_stop(struct ieee80211_hw *hw)
906 907 908
{
	struct ath_softc *sc = hw->priv;

S
Sujith 已提交
909 910 911 912
	if (sc->sc_flags & SC_OP_INVALID) {
		DPRINTF(sc, ATH_DBG_ANY, "%s: Device not present\n", __func__);
		return;
	}
913

S
Sujith 已提交
914
	ath_stop(sc);
915

S
Sujith 已提交
916
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
917 918
}

919 920
static int ath9k_add_interface(struct ieee80211_hw *hw,
			       struct ieee80211_if_init_conf *conf)
921 922
{
	struct ath_softc *sc = hw->priv;
S
Sujith 已提交
923 924
	struct ath_vap *avp = (void *)conf->vif->drv_priv;
	int ic_opmode = 0;
925

926 927 928 929 930 931
	/* Support only vap for now */

	if (sc->sc_nvaps)
		return -ENOBUFS;

	switch (conf->type) {
932
	case NL80211_IFTYPE_STATION:
933
		ic_opmode = ATH9K_M_STA;
934
		break;
935
	case NL80211_IFTYPE_ADHOC:
936
		ic_opmode = ATH9K_M_IBSS;
937
		break;
938
	case NL80211_IFTYPE_AP:
939
		ic_opmode = ATH9K_M_HOSTAP;
940 941 942
		break;
	default:
		DPRINTF(sc, ATH_DBG_FATAL,
943 944 945
			"%s: Interface type %d not yet supported\n",
			__func__, conf->type);
		return -EOPNOTSUPP;
946 947
	}

948 949 950 951
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
		__func__,
		ic_opmode);

S
Sujith 已提交
952 953 954 955 956 957 958 959 960 961 962 963 964
	/* Set the VAP opmode */
	avp->av_opmode = ic_opmode;
	avp->av_bslot = -1;

	if (ic_opmode == ATH9K_M_HOSTAP)
		ath9k_hw_set_tsfadjust(sc->sc_ah, 1);

	sc->sc_vaps[0] = conf->vif;
	sc->sc_nvaps++;

	/* Set the device opmode */
	sc->sc_ah->ah_opmode = ic_opmode;

965 966 967 968 969 970 971
	if (conf->type == NL80211_IFTYPE_AP) {
		/* TODO: is this a suitable place to start ANI for AP mode? */
		/* Start ANI */
		mod_timer(&sc->sc_ani.timer,
			  jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
	}

972
	return 0;
973 974
}

975 976
static void ath9k_remove_interface(struct ieee80211_hw *hw,
				   struct ieee80211_if_init_conf *conf)
977
{
978
	struct ath_softc *sc = hw->priv;
S
Sujith 已提交
979
	struct ath_vap *avp = (void *)conf->vif->drv_priv;
980

981
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
982

983 984 985
#ifdef CONFIG_SLOW_ANT_DIV
	ath_slow_ant_div_stop(&sc->sc_antdiv);
#endif
986 987
	/* Stop ANI */
	del_timer_sync(&sc->sc_ani.timer);
J
Jouni Malinen 已提交
988

989 990 991 992 993
	/* Reclaim beacon resources */
	if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP ||
	    sc->sc_ah->ah_opmode == ATH9K_M_IBSS) {
		ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
		ath_beacon_return(sc, avp);
J
Jouni Malinen 已提交
994
	}
995

996
	sc->sc_flags &= ~SC_OP_BEACONS;
997

S
Sujith 已提交
998 999
	sc->sc_vaps[0] = NULL;
	sc->sc_nvaps--;
1000 1001
}

1002
static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1003
{
1004 1005
	struct ath_softc *sc = hw->priv;
	struct ieee80211_channel *curchan = hw->conf.channel;
1006
	struct ieee80211_conf *conf = &hw->conf;
1007
	int pos;
1008

1009 1010 1011
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
		__func__,
		curchan->center_freq);
1012

J
Johannes Berg 已提交
1013 1014 1015
	/* Update chainmask */
	ath_update_chainmask(sc, conf->ht.enabled);

1016 1017 1018 1019
	pos = ath_get_channel(sc, curchan);
	if (pos == -1) {
		DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
		return -EINVAL;
1020 1021
	}

1022 1023 1024
	sc->sc_ah->ah_channels[pos].chanmode =
		(curchan->band == IEEE80211_BAND_2GHZ) ?
		CHANNEL_G : CHANNEL_A;
1025

J
Johannes Berg 已提交
1026
	if (sc->sc_curaid && hw->conf.ht.enabled)
1027 1028
		sc->sc_ah->ah_channels[pos].chanmode =
			ath_get_extchanmode(sc, curchan);
1029

1030 1031
	if (changed & IEEE80211_CONF_CHANGE_POWER)
		sc->sc_config.txpowlimit = 2 * conf->power_level;
1032

1033 1034 1035 1036
	/* set h/w channel */
	if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
		DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
			__func__);
1037 1038 1039 1040

	return 0;
}

1041 1042 1043
static int ath9k_config_interface(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif,
				  struct ieee80211_if_conf *conf)
1044
{
1045 1046
	struct ath_softc *sc = hw->priv;
	struct ath_hal *ah = sc->sc_ah;
S
Sujith 已提交
1047
	struct ath_vap *avp = (void *)vif->drv_priv;
1048 1049
	u32 rfilt = 0;
	int error, i;
1050

1051 1052
	/* TODO: Need to decide which hw opmode to use for multi-interface
	 * cases */
1053
	if (vif->type == NL80211_IFTYPE_AP &&
1054 1055 1056 1057 1058 1059 1060
	    ah->ah_opmode != ATH9K_M_HOSTAP) {
		ah->ah_opmode = ATH9K_M_HOSTAP;
		ath9k_hw_setopmode(ah);
		ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
		/* Request full reset to get hw opmode changed properly */
		sc->sc_flags |= SC_OP_FULL_RESET;
	}
1061

1062 1063 1064
	if ((conf->changed & IEEE80211_IFCC_BSSID) &&
	    !is_zero_ether_addr(conf->bssid)) {
		switch (vif->type) {
1065 1066
		case NL80211_IFTYPE_STATION:
		case NL80211_IFTYPE_ADHOC:
1067 1068 1069 1070 1071
			/* Set BSSID */
			memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
			sc->sc_curaid = 0;
			ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
					       sc->sc_curaid);
1072

1073 1074
			/* Set aggregation protection mode parameters */
			sc->sc_config.ath_aggr_prot = 0;
1075

1076
			DPRINTF(sc, ATH_DBG_CONFIG,
J
Johannes Berg 已提交
1077
				"%s: RX filter 0x%x bssid %pM aid 0x%x\n",
1078
				__func__, rfilt,
J
Johannes Berg 已提交
1079
				sc->sc_curbssid, sc->sc_curaid);
1080

1081 1082
			/* need to reconfigure the beacon */
			sc->sc_flags &= ~SC_OP_BEACONS ;
1083

1084 1085 1086 1087 1088
			break;
		default:
			break;
		}
	}
1089

1090
	if ((conf->changed & IEEE80211_IFCC_BEACON) &&
1091 1092
	    ((vif->type == NL80211_IFTYPE_ADHOC) ||
	     (vif->type == NL80211_IFTYPE_AP))) {
1093 1094 1095 1096 1097 1098 1099 1100 1101
		/*
		 * Allocate and setup the beacon frame.
		 *
		 * Stop any previous beacon DMA.  This may be
		 * necessary, for example, when an ibss merge
		 * causes reconfiguration; we may be called
		 * with beacon transmission active.
		 */
		ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1102

1103 1104 1105
		error = ath_beacon_alloc(sc, 0);
		if (error != 0)
			return error;
1106

1107 1108
		ath_beacon_sync(sc, 0);
	}
1109

1110
	/* Check for WLAN_CAPABILITY_PRIVACY ? */
S
Sujith 已提交
1111
	if ((avp->av_opmode != ATH9K_M_STA)) {
1112 1113 1114 1115 1116 1117
		for (i = 0; i < IEEE80211_WEP_NKID; i++)
			if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
				ath9k_hw_keysetmac(sc->sc_ah,
						   (u16)i,
						   sc->sc_curbssid);
	}
1118

1119
	/* Only legacy IBSS for now */
1120
	if (vif->type == NL80211_IFTYPE_ADHOC)
1121
		ath_update_chainmask(sc, 0);
1122

1123 1124
	return 0;
}
1125

1126 1127 1128 1129 1130 1131 1132
#define SUPPORTED_FILTERS			\
	(FIF_PROMISC_IN_BSS |			\
	FIF_ALLMULTI |				\
	FIF_CONTROL |				\
	FIF_OTHER_BSS |				\
	FIF_BCN_PRBRESP_PROMISC |		\
	FIF_FCSFAIL)
1133

1134 1135 1136 1137 1138 1139 1140 1141 1142
/* FIXME: sc->sc_full_reset ? */
static void ath9k_configure_filter(struct ieee80211_hw *hw,
				   unsigned int changed_flags,
				   unsigned int *total_flags,
				   int mc_count,
				   struct dev_mc_list *mclist)
{
	struct ath_softc *sc = hw->priv;
	u32 rfilt;
1143

1144 1145
	changed_flags &= SUPPORTED_FILTERS;
	*total_flags &= SUPPORTED_FILTERS;
1146

1147 1148 1149
	sc->rx_filter = *total_flags;
	rfilt = ath_calcrxfilter(sc);
	ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1150

1151 1152 1153 1154
	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
			ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
	}
1155

1156 1157 1158
	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n",
		__func__, sc->rx_filter);
}
1159

1160 1161 1162
static void ath9k_sta_notify(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     enum sta_notify_cmd cmd,
1163
			     struct ieee80211_sta *sta)
1164 1165
{
	struct ath_softc *sc = hw->priv;
1166

1167 1168
	switch (cmd) {
	case STA_NOTIFY_ADD:
S
Sujith 已提交
1169
		ath_node_attach(sc, sta);
1170 1171
		break;
	case STA_NOTIFY_REMOVE:
S
Sujith 已提交
1172
		ath_node_detach(sc, sta);
1173 1174 1175 1176
		break;
	default:
		break;
	}
1177 1178
}

1179 1180 1181
static int ath9k_conf_tx(struct ieee80211_hw *hw,
			 u16 queue,
			 const struct ieee80211_tx_queue_params *params)
1182
{
1183 1184 1185
	struct ath_softc *sc = hw->priv;
	struct ath9k_tx_queue_info qi;
	int ret = 0, qnum;
1186

1187 1188
	if (queue >= WME_NUM_AC)
		return 0;
1189

1190 1191 1192 1193 1194
	qi.tqi_aifs = params->aifs;
	qi.tqi_cwmin = params->cw_min;
	qi.tqi_cwmax = params->cw_max;
	qi.tqi_burstTime = params->txop;
	qnum = ath_get_hal_qnum(queue, sc);
1195

1196 1197 1198 1199 1200 1201 1202 1203 1204 1205
	DPRINTF(sc, ATH_DBG_CONFIG,
		"%s: Configure tx [queue/halq] [%d/%d],  "
		"aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
		__func__,
		queue,
		qnum,
		params->aifs,
		params->cw_min,
		params->cw_max,
		params->txop);
1206

1207 1208 1209 1210
	ret = ath_txq_update(sc, qnum, &qi);
	if (ret)
		DPRINTF(sc, ATH_DBG_FATAL,
			"%s: TXQ Update failed\n", __func__);
1211

1212 1213
	return ret;
}
1214

1215 1216 1217 1218 1219 1220 1221 1222
static int ath9k_set_key(struct ieee80211_hw *hw,
			 enum set_key_cmd cmd,
			 const u8 *local_addr,
			 const u8 *addr,
			 struct ieee80211_key_conf *key)
{
	struct ath_softc *sc = hw->priv;
	int ret = 0;
1223

1224
	DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
1225

1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244
	switch (cmd) {
	case SET_KEY:
		ret = ath_key_config(sc, addr, key);
		if (!ret) {
			set_bit(key->keyidx, sc->sc_keymap);
			key->hw_key_idx = key->keyidx;
			/* push IV and Michael MIC generation to stack */
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
			if (key->alg == ALG_TKIP)
				key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
		}
		break;
	case DISABLE_KEY:
		ath_key_delete(sc, key);
		clear_bit(key->keyidx, sc->sc_keymap);
		break;
	default:
		ret = -EINVAL;
	}
1245

1246 1247
	return ret;
}
1248

1249 1250 1251 1252 1253 1254
static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_bss_conf *bss_conf,
				   u32 changed)
{
	struct ath_softc *sc = hw->priv;
1255

1256 1257 1258 1259 1260 1261 1262 1263 1264
	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
			__func__,
			bss_conf->use_short_preamble);
		if (bss_conf->use_short_preamble)
			sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
		else
			sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
	}
1265

1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
		DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
			__func__,
			bss_conf->use_cts_prot);
		if (bss_conf->use_cts_prot &&
		    hw->conf.channel->band != IEEE80211_BAND_5GHZ)
			sc->sc_flags |= SC_OP_PROTECT_ENABLE;
		else
			sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
	}
1276

1277
	if (changed & BSS_CHANGED_HT) {
J
Johannes Berg 已提交
1278 1279
		DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT\n",
			__func__);
1280
		ath9k_ht_conf(sc, bss_conf);
1281 1282
	}

1283 1284 1285 1286
	if (changed & BSS_CHANGED_ASSOC) {
		DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
			__func__,
			bss_conf->assoc);
S
Sujith 已提交
1287
		ath9k_bss_assoc_info(sc, vif, bss_conf);
1288 1289
	}
}
1290

1291 1292 1293 1294 1295
static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
{
	u64 tsf;
	struct ath_softc *sc = hw->priv;
	struct ath_hal *ah = sc->sc_ah;
1296

1297
	tsf = ath9k_hw_gettsf64(ah);
1298

1299 1300
	return tsf;
}
1301

1302 1303 1304 1305
static void ath9k_reset_tsf(struct ieee80211_hw *hw)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hal *ah = sc->sc_ah;
1306

1307 1308
	ath9k_hw_reset_tsf(ah);
}
1309

1310 1311
static int ath9k_ampdu_action(struct ieee80211_hw *hw,
		       enum ieee80211_ampdu_mlme_action action,
1312 1313
		       struct ieee80211_sta *sta,
		       u16 tid, u16 *ssn)
1314 1315 1316
{
	struct ath_softc *sc = hw->priv;
	int ret = 0;
1317

1318 1319
	switch (action) {
	case IEEE80211_AMPDU_RX_START:
1320 1321
		if (!(sc->sc_flags & SC_OP_RXAGGR))
			ret = -ENOTSUPP;
1322 1323 1324 1325
		break;
	case IEEE80211_AMPDU_RX_STOP:
		break;
	case IEEE80211_AMPDU_TX_START:
S
Sujith 已提交
1326
		ret = ath_tx_aggr_start(sc, sta, tid, ssn);
1327 1328 1329 1330 1331
		if (ret < 0)
			DPRINTF(sc, ATH_DBG_FATAL,
				"%s: Unable to start TX aggregation\n",
				__func__);
		else
1332
			ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1333 1334
		break;
	case IEEE80211_AMPDU_TX_STOP:
S
Sujith 已提交
1335
		ret = ath_tx_aggr_stop(sc, sta, tid);
1336 1337 1338 1339
		if (ret < 0)
			DPRINTF(sc, ATH_DBG_FATAL,
				"%s: Unable to stop TX aggregation\n",
				__func__);
1340

1341
		ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1342
		break;
1343 1344 1345
	case IEEE80211_AMPDU_TX_RESUME:
		ath_tx_aggr_resume(sc, sta, tid);
		break;
1346 1347 1348 1349 1350 1351
	default:
		DPRINTF(sc, ATH_DBG_FATAL,
			"%s: Unknown AMPDU action\n", __func__);
	}

	return ret;
1352 1353
}

1354 1355 1356 1357 1358
static int ath9k_no_fragmentation(struct ieee80211_hw *hw, u32 value)
{
	return -EOPNOTSUPP;
}

1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373
static struct ieee80211_ops ath9k_ops = {
	.tx 		    = ath9k_tx,
	.start 		    = ath9k_start,
	.stop 		    = ath9k_stop,
	.add_interface 	    = ath9k_add_interface,
	.remove_interface   = ath9k_remove_interface,
	.config 	    = ath9k_config,
	.config_interface   = ath9k_config_interface,
	.configure_filter   = ath9k_configure_filter,
	.sta_notify         = ath9k_sta_notify,
	.conf_tx 	    = ath9k_conf_tx,
	.bss_info_changed   = ath9k_bss_info_changed,
	.set_key            = ath9k_set_key,
	.get_tsf 	    = ath9k_get_tsf,
	.reset_tsf 	    = ath9k_reset_tsf,
1374 1375
	.ampdu_action       = ath9k_ampdu_action,
	.set_frag_threshold = ath9k_no_fragmentation,
1376 1377
};

1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436
static struct {
	u32 version;
	const char * name;
} ath_mac_bb_names[] = {
	{ AR_SREV_VERSION_5416_PCI,	"5416" },
	{ AR_SREV_VERSION_5416_PCIE,	"5418" },
	{ AR_SREV_VERSION_9100,		"9100" },
	{ AR_SREV_VERSION_9160,		"9160" },
	{ AR_SREV_VERSION_9280,		"9280" },
	{ AR_SREV_VERSION_9285,		"9285" }
};

static struct {
	u16 version;
	const char * name;
} ath_rf_names[] = {
	{ 0,				"5133" },
	{ AR_RAD5133_SREV_MAJOR,	"5133" },
	{ AR_RAD5122_SREV_MAJOR,	"5122" },
	{ AR_RAD2133_SREV_MAJOR,	"2133" },
	{ AR_RAD2122_SREV_MAJOR,	"2122" }
};

/*
 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
 */

static const char *
ath_mac_bb_name(u32 mac_bb_version)
{
	int i;

	for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
		if (ath_mac_bb_names[i].version == mac_bb_version) {
			return ath_mac_bb_names[i].name;
		}
	}

	return "????";
}

/*
 * Return the RF name. "????" is returned if the RF is unknown.
 */

static const char *
ath_rf_name(u16 rf_version)
{
	int i;

	for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
		if (ath_rf_names[i].version == rf_version) {
			return ath_rf_names[i].name;
		}
	}

	return "????";
}

1437 1438 1439 1440 1441 1442 1443 1444
static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	void __iomem *mem;
	struct ath_softc *sc;
	struct ieee80211_hw *hw;
	u8 csz;
	u32 val;
	int ret = 0;
1445
	struct ath_hal *ah;
1446 1447 1448 1449

	if (pci_enable_device(pdev))
		return -EIO;

1450 1451 1452
	ret =  pci_set_dma_mask(pdev, DMA_32BIT_MASK);

	if (ret) {
1453
		printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
1454 1455 1456 1457 1458 1459 1460 1461
		goto bad;
	}

	ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);

	if (ret) {
		printk(KERN_ERR "ath9k: 32-bit DMA consistent "
			"DMA enable faled\n");
1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539
		goto bad;
	}

	/*
	 * Cache line size is used to size and align various
	 * structures used to communicate with the hardware.
	 */
	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
	if (csz == 0) {
		/*
		 * Linux 2.4.18 (at least) writes the cache line size
		 * register as a 16-bit wide register which is wrong.
		 * We must have this setup properly for rx buffer
		 * DMA to work so force a reasonable value here if it
		 * comes up zero.
		 */
		csz = L1_CACHE_BYTES / sizeof(u32);
		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
	}
	/*
	 * The default setting of latency timer yields poor results,
	 * set it to the value used by other systems. It may be worth
	 * tweaking this setting more.
	 */
	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);

	pci_set_master(pdev);

	/*
	 * Disable the RETRY_TIMEOUT register (0x41) to keep
	 * PCI Tx retries from interfering with C3 CPU state.
	 */
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

	ret = pci_request_region(pdev, 0, "ath9k");
	if (ret) {
		dev_err(&pdev->dev, "PCI memory region reserve error\n");
		ret = -ENODEV;
		goto bad;
	}

	mem = pci_iomap(pdev, 0, 0);
	if (!mem) {
		printk(KERN_ERR "PCI memory map error\n") ;
		ret = -EIO;
		goto bad1;
	}

	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
	if (hw == NULL) {
		printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
		goto bad2;
	}

	SET_IEEE80211_DEV(hw, &pdev->dev);
	pci_set_drvdata(pdev, hw);

	sc = hw->priv;
	sc->hw = hw;
	sc->pdev = pdev;
	sc->mem = mem;

	if (ath_attach(id->device, sc) != 0) {
		ret = -ENODEV;
		goto bad3;
	}

	/* setup interrupt service routine */

	if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
		printk(KERN_ERR "%s: request_irq failed\n",
			wiphy_name(hw->wiphy));
		ret = -EIO;
		goto bad4;
	}

1540 1541 1542 1543
	ah = sc->sc_ah;
	printk(KERN_INFO
	       "%s: Atheros AR%s MAC/BB Rev:%x "
	       "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
1544
	       wiphy_name(hw->wiphy),
1545 1546 1547 1548
	       ath_mac_bb_name(ah->ah_macVersion),
	       ah->ah_macRev,
	       ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
	       ah->ah_phyRev,
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570
	       (unsigned long)mem, pdev->irq);

	return 0;
bad4:
	ath_detach(sc);
bad3:
	ieee80211_free_hw(hw);
bad2:
	pci_iounmap(pdev, mem);
bad1:
	pci_release_region(pdev, 0);
bad:
	pci_disable_device(pdev);
	return ret;
}

static void ath_pci_remove(struct pci_dev *pdev)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	ath_detach(sc);
S
Sujith 已提交
1571 1572
	if (pdev->irq)
		free_irq(pdev->irq, sc);
1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
	pci_iounmap(pdev, sc->mem);
	pci_release_region(pdev, 0);
	pci_disable_device(pdev);
	ieee80211_free_hw(hw);
}

#ifdef CONFIG_PM

static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
1583 1584 1585 1586
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1587

1588
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1589 1590 1591 1592
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
#endif

1593 1594 1595 1596 1597 1598 1599 1600 1601
	pci_save_state(pdev);
	pci_disable_device(pdev);
	pci_set_power_state(pdev, 3);

	return 0;
}

static int ath_pci_resume(struct pci_dev *pdev)
{
1602 1603
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;
1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619
	u32 val;
	int err;

	err = pci_enable_device(pdev);
	if (err)
		return err;
	pci_restore_state(pdev);
	/*
	 * Suspend/Resume resets the PCI configuration space, so we have to
	 * re-disable the RETRY_TIMEOUT register (0x41) to keep
	 * PCI Tx retries from interfering with C3 CPU state
	 */
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

1620 1621 1622 1623 1624
	/* Enable LED */
	ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);

1625
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1626 1627 1628 1629 1630 1631 1632 1633 1634
	/*
	 * check the h/w rfkill state on resume
	 * and start the rfkill poll timer
	 */
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		queue_delayed_work(sc->hw->workqueue,
				   &sc->rf_kill.rfkill_poll, 0);
#endif

1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673
	return 0;
}

#endif /* CONFIG_PM */

MODULE_DEVICE_TABLE(pci, ath_pci_id_table);

static struct pci_driver ath_pci_driver = {
	.name       = "ath9k",
	.id_table   = ath_pci_id_table,
	.probe      = ath_pci_probe,
	.remove     = ath_pci_remove,
#ifdef CONFIG_PM
	.suspend    = ath_pci_suspend,
	.resume     = ath_pci_resume,
#endif /* CONFIG_PM */
};

static int __init init_ath_pci(void)
{
	printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);

	if (pci_register_driver(&ath_pci_driver) < 0) {
		printk(KERN_ERR
			"ath_pci: No devices found, driver not installed.\n");
		pci_unregister_driver(&ath_pci_driver);
		return -ENODEV;
	}

	return 0;
}
module_init(init_ath_pci);

static void __exit exit_ath_pci(void)
{
	pci_unregister_driver(&ath_pci_driver);
	printk(KERN_INFO "%s: driver unloaded\n", dev_info);
}
module_exit(exit_ath_pci);