mac80211_if.c

   1/*
   2 * Copyright (c) 2010 Broadcom Corporation
   3 * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   4 *
   5 * Permission to use, copy, modify, and/or distribute this software for any
   6 * purpose with or without fee is hereby granted, provided that the above
   7 * copyright notice and this permission notice appear in all copies.
   8 *
   9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  14 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  15 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16 */
  17
  18#define __UNDEF_NO_VERSION__
  19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21#include <linux/etherdevice.h>
  22#include <linux/sched.h>
  23#include <linux/firmware.h>
  24#include <linux/interrupt.h>
  25#include <linux/module.h>
  26#include <linux/bcma/bcma.h>
  27#include <linux/string_choices.h>
  28#include <net/mac80211.h>
  29#include <defs.h>
  30#include "phy/phy_int.h"
  31#include "d11.h"
  32#include "channel.h"
  33#include "scb.h"
  34#include "pub.h"
  35#include "ucode_loader.h"
  36#include "mac80211_if.h"
  37#include "main.h"
  38#include "debug.h"
  39#include "led.h"
  40
  41#define N_TX_QUEUES	4 /* #tx queues on mac80211<->driver interface */
  42#define BRCMS_FLUSH_TIMEOUT	500 /* msec */
  43
  44/* Flags we support */
  45#define MAC_FILTERS (FIF_ALLMULTI | \
  46	FIF_FCSFAIL | \
  47	FIF_CONTROL | \
  48	FIF_OTHER_BSS | \
  49	FIF_BCN_PRBRESP_PROMISC | \
  50	FIF_PSPOLL)
  51
  52#define CHAN2GHZ(channel, frequency, chflags)  { \
  53	.band = NL80211_BAND_2GHZ, \
  54	.center_freq = (frequency), \
  55	.hw_value = (channel), \
  56	.flags = chflags, \
  57	.max_antenna_gain = 0, \
  58	.max_power = 19, \
  59}
  60
  61#define CHAN5GHZ(channel, chflags)  { \
  62	.band = NL80211_BAND_5GHZ, \
  63	.center_freq = 5000 + 5*(channel), \
  64	.hw_value = (channel), \
  65	.flags = chflags, \
  66	.max_antenna_gain = 0, \
  67	.max_power = 21, \
  68}
  69
  70#define RATE(rate100m, _flags) { \
  71	.bitrate = (rate100m), \
  72	.flags = (_flags), \
  73	.hw_value = (rate100m / 5), \
  74}
  75
  76struct firmware_hdr {
  77	__le32 offset;
  78	__le32 len;
  79	__le32 idx;
  80};
  81
  82static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  83	"brcm/bcm43xx",
  84	NULL
  85};
  86
  87static int n_adapters_found;
  88
  89MODULE_AUTHOR("Broadcom Corporation");
  90MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  91MODULE_LICENSE("Dual BSD/GPL");
  92/* This needs to be adjusted when brcms_firmwares changes */
  93MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  94MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  95
  96/* recognized BCMA Core IDs */
  97static struct bcma_device_id brcms_coreid_table[] = {
  98	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
  99	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
 100	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 101	{},
 102};
 103MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 104
 105#if defined(CONFIG_BRCMDBG)
 106/*
 107 * Module parameter for setting the debug message level. Available
 108 * flags are specified by the BRCM_DL_* macros in
 109 * drivers/net/wireless/brcm80211/include/defs.h.
 110 */
 111module_param_named(debug, brcm_msg_level, uint, 0644);
 112#endif
 113
 114static struct ieee80211_channel brcms_2ghz_chantable[] = {
 115	CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 116	CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 117	CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 118	CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 119	CHAN2GHZ(5, 2432, 0),
 120	CHAN2GHZ(6, 2437, 0),
 121	CHAN2GHZ(7, 2442, 0),
 122	CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 123	CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 124	CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 125	CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 126	CHAN2GHZ(12, 2467,
 127		 IEEE80211_CHAN_NO_IR |
 128		 IEEE80211_CHAN_NO_HT40PLUS),
 129	CHAN2GHZ(13, 2472,
 130		 IEEE80211_CHAN_NO_IR |
 131		 IEEE80211_CHAN_NO_HT40PLUS),
 132	CHAN2GHZ(14, 2484,
 133		 IEEE80211_CHAN_NO_IR |
 134		 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 135		 IEEE80211_CHAN_NO_OFDM)
 136};
 137
 138static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 139	/* UNII-1 */
 140	CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 141	CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 142	CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 143	CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 144	/* UNII-2 */
 145	CHAN5GHZ(52,
 146		 IEEE80211_CHAN_RADAR |
 147		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 148	CHAN5GHZ(56,
 149		 IEEE80211_CHAN_RADAR |
 150		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 151	CHAN5GHZ(60,
 152		 IEEE80211_CHAN_RADAR |
 153		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 154	CHAN5GHZ(64,
 155		 IEEE80211_CHAN_RADAR |
 156		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 157	/* MID */
 158	CHAN5GHZ(100,
 159		 IEEE80211_CHAN_RADAR |
 160		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 161	CHAN5GHZ(104,
 162		 IEEE80211_CHAN_RADAR |
 163		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 164	CHAN5GHZ(108,
 165		 IEEE80211_CHAN_RADAR |
 166		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 167	CHAN5GHZ(112,
 168		 IEEE80211_CHAN_RADAR |
 169		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 170	CHAN5GHZ(116,
 171		 IEEE80211_CHAN_RADAR |
 172		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 173	CHAN5GHZ(120,
 174		 IEEE80211_CHAN_RADAR |
 175		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 176	CHAN5GHZ(124,
 177		 IEEE80211_CHAN_RADAR |
 178		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 179	CHAN5GHZ(128,
 180		 IEEE80211_CHAN_RADAR |
 181		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 182	CHAN5GHZ(132,
 183		 IEEE80211_CHAN_RADAR |
 184		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 185	CHAN5GHZ(136,
 186		 IEEE80211_CHAN_RADAR |
 187		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 188	CHAN5GHZ(140,
 189		 IEEE80211_CHAN_RADAR |
 190		 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 191		 IEEE80211_CHAN_NO_HT40MINUS),
 192	/* UNII-3 */
 193	CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 194	CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 195	CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 196	CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 197	CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 198};
 199
 200/*
 201 * The rate table is used for both 2.4G and 5G rates. The
 202 * latter being a subset as it does not support CCK rates.
 203 */
 204static struct ieee80211_rate legacy_ratetable[] = {
 205	RATE(10, 0),
 206	RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 207	RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 208	RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 209	RATE(60, 0),
 210	RATE(90, 0),
 211	RATE(120, 0),
 212	RATE(180, 0),
 213	RATE(240, 0),
 214	RATE(360, 0),
 215	RATE(480, 0),
 216	RATE(540, 0),
 217};
 218
 219static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 220	.band = NL80211_BAND_2GHZ,
 221	.channels = brcms_2ghz_chantable,
 222	.n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 223	.bitrates = legacy_ratetable,
 224	.n_bitrates = ARRAY_SIZE(legacy_ratetable),
 225	.ht_cap = {
 226		   /* from include/linux/ieee80211.h */
 227		   .cap = IEEE80211_HT_CAP_GRN_FLD |
 228			  IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 229		   .ht_supported = true,
 230		   .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 231		   .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 232		   .mcs = {
 233			   /* placeholders for now */
 234			   .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 235			   .rx_highest = cpu_to_le16(500),
 236			   .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 237		   }
 238};
 239
 240static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 241	.band = NL80211_BAND_5GHZ,
 242	.channels = brcms_5ghz_nphy_chantable,
 243	.n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 244	.bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 245	.n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 246			BRCMS_LEGACY_5G_RATE_OFFSET,
 247	.ht_cap = {
 248		   .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 249			  IEEE80211_HT_CAP_SGI_40,
 250		   .ht_supported = true,
 251		   .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 252		   .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 253		   .mcs = {
 254			   /* placeholders for now */
 255			   .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 256			   .rx_highest = cpu_to_le16(500),
 257			   .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 258		   }
 259};
 260
 261/* flags the given rate in rateset as requested */
 262static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 263{
 264	u32 i;
 265
 266	for (i = 0; i < rs->count; i++) {
 267		if (rate != (rs->rates[i] & 0x7f))
 268			continue;
 269
 270		if (is_br)
 271			rs->rates[i] |= BRCMS_RATE_FLAG;
 272		else
 273			rs->rates[i] &= BRCMS_RATE_MASK;
 274		return;
 275	}
 276}
 277
 278/*
 279 * This function frees the WL per-device resources.
 280 *
 281 * This function frees resources owned by the WL device pointed to
 282 * by the wl parameter.
 283 *
 284 * precondition: can both be called locked and unlocked
 285 */
 286static void brcms_free(struct brcms_info *wl)
 287{
 288	struct brcms_timer *t, *next;
 289
 290	/* free ucode data */
 291	if (wl->fw.fw_cnt)
 292		brcms_ucode_data_free(&wl->ucode);
 293	if (wl->irq)
 294		free_irq(wl->irq, wl);
 295
 296	/* kill dpc */
 297	tasklet_kill(&wl->tasklet);
 298
 299	if (wl->pub) {
 300		brcms_debugfs_detach(wl->pub);
 301		brcms_c_module_unregister(wl->pub, "linux", wl);
 302	}
 303
 304	/* free common resources */
 305	if (wl->wlc) {
 306		brcms_c_detach(wl->wlc);
 307		wl->wlc = NULL;
 308		wl->pub = NULL;
 309	}
 310
 311	/* virtual interface deletion is deferred so we cannot spinwait */
 312
 313	/* wait for all pending callbacks to complete */
 314	while (atomic_read(&wl->callbacks) > 0)
 315		schedule();
 316
 317	/* free timers */
 318	for (t = wl->timers; t; t = next) {
 319		next = t->next;
 320#ifdef DEBUG
 321		kfree(t->name);
 322#endif
 323		kfree(t);
 324	}
 325}
 326
 327/*
 328* called from both kernel as from this kernel module (error flow on attach)
 329* precondition: perimeter lock is not acquired.
 330*/
 331static void brcms_remove(struct bcma_device *pdev)
 332{
 333	struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 334	struct brcms_info *wl = hw->priv;
 335
 336	if (wl->wlc) {
 337		brcms_led_unregister(wl);
 338		wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 339		wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 340		ieee80211_unregister_hw(hw);
 341	}
 342
 343	brcms_free(wl);
 344
 345	bcma_set_drvdata(pdev, NULL);
 346	ieee80211_free_hw(hw);
 347}
 348
 349/*
 350 * Precondition: Since this function is called in brcms_pci_probe() context,
 351 * no locking is required.
 352 */
 353static void brcms_release_fw(struct brcms_info *wl)
 354{
 355	int i;
 356	for (i = 0; i < MAX_FW_IMAGES; i++) {
 357		release_firmware(wl->fw.fw_bin[i]);
 358		release_firmware(wl->fw.fw_hdr[i]);
 359	}
 360}
 361
 362/*
 363 * Precondition: Since this function is called in brcms_pci_probe() context,
 364 * no locking is required.
 365 */
 366static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 367{
 368	int status;
 369	struct device *device = &pdev->dev;
 370	char fw_name[100];
 371	int i;
 372
 373	memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 374	for (i = 0; i < MAX_FW_IMAGES; i++) {
 375		if (brcms_firmwares[i] == NULL)
 376			break;
 377		sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 378			UCODE_LOADER_API_VER);
 379		status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 380		if (status) {
 381			wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 382				  KBUILD_MODNAME, fw_name);
 383			return status;
 384		}
 385		sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 386			UCODE_LOADER_API_VER);
 387		status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 388		if (status) {
 389			wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 390				  KBUILD_MODNAME, fw_name);
 391			return status;
 392		}
 393		wl->fw.hdr_num_entries[i] =
 394		    wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 395	}
 396	wl->fw.fw_cnt = i;
 397	status = brcms_ucode_data_init(wl, &wl->ucode);
 398	brcms_release_fw(wl);
 399	return status;
 400}
 401
 402static void brcms_ops_tx(struct ieee80211_hw *hw,
 403			 struct ieee80211_tx_control *control,
 404			 struct sk_buff *skb)
 405{
 406	struct brcms_info *wl = hw->priv;
 407	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 408
 409	spin_lock_bh(&wl->lock);
 410	if (!wl->pub->up) {
 411		brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 412		kfree_skb(skb);
 413		goto done;
 414	}
 415	if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 416		tx_info->rate_driver_data[0] = control->sta;
 417 done:
 418	spin_unlock_bh(&wl->lock);
 419}
 420
 421static int brcms_ops_start(struct ieee80211_hw *hw)
 422{
 423	struct brcms_info *wl = hw->priv;
 424	bool blocked;
 425	int err;
 426
 427	if (!wl->ucode.bcm43xx_bomminor) {
 428		err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 429		if (err)
 430			return -ENOENT;
 431	}
 432
 433	ieee80211_wake_queues(hw);
 434	spin_lock_bh(&wl->lock);
 435	blocked = brcms_rfkill_set_hw_state(wl);
 436	spin_unlock_bh(&wl->lock);
 437	if (!blocked)
 438		wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 439
 440	spin_lock_bh(&wl->lock);
 441	/* avoid acknowledging frames before a non-monitor device is added */
 442	wl->mute_tx = true;
 443
 444	if (!wl->pub->up)
 445		if (!blocked)
 446			err = brcms_up(wl);
 447		else
 448			err = -ERFKILL;
 449	else
 450		err = -ENODEV;
 451	spin_unlock_bh(&wl->lock);
 452
 453	if (err != 0)
 454		brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 455			  __func__, err);
 456
 457	bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 458	return err;
 459}
 460
 461static void brcms_ops_stop(struct ieee80211_hw *hw, bool suspend)
 462{
 463	struct brcms_info *wl = hw->priv;
 464	int status;
 465
 466	ieee80211_stop_queues(hw);
 467
 468	if (wl->wlc == NULL)
 469		return;
 470
 471	spin_lock_bh(&wl->lock);
 472	status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 473	spin_unlock_bh(&wl->lock);
 474	if (!status) {
 475		brcms_err(wl->wlc->hw->d11core,
 476			  "wl: brcms_ops_stop: chipmatch failed\n");
 477		return;
 478	}
 479
 480	bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 481
 482	/* put driver in down state */
 483	spin_lock_bh(&wl->lock);
 484	brcms_down(wl);
 485	spin_unlock_bh(&wl->lock);
 486}
 487
 488static int
 489brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 490{
 491	struct brcms_info *wl = hw->priv;
 492
 493	/* Just STA, AP and ADHOC for now */
 494	if (vif->type != NL80211_IFTYPE_STATION &&
 495	    vif->type != NL80211_IFTYPE_AP &&
 496	    vif->type != NL80211_IFTYPE_ADHOC) {
 497		brcms_err(wl->wlc->hw->d11core,
 498			  "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 499			  __func__, vif->type);
 500		return -EOPNOTSUPP;
 501	}
 502
 503	spin_lock_bh(&wl->lock);
 504	wl->wlc->vif = vif;
 505	wl->mute_tx = false;
 506	brcms_c_mute(wl->wlc, false);
 507	if (vif->type == NL80211_IFTYPE_STATION)
 508		brcms_c_start_station(wl->wlc, vif->addr);
 509	else if (vif->type == NL80211_IFTYPE_AP)
 510		brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 511				 vif->cfg.ssid, vif->cfg.ssid_len);
 512	else if (vif->type == NL80211_IFTYPE_ADHOC)
 513		brcms_c_start_adhoc(wl->wlc, vif->addr);
 514	spin_unlock_bh(&wl->lock);
 515
 516	return 0;
 517}
 518
 519static void
 520brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 521{
 522	struct brcms_info *wl = hw->priv;
 523
 524	spin_lock_bh(&wl->lock);
 525	wl->wlc->vif = NULL;
 526	spin_unlock_bh(&wl->lock);
 527}
 528
 529static int brcms_ops_config(struct ieee80211_hw *hw, int radio_idx,
 530			    u32 changed)
 531{
 532	struct ieee80211_conf *conf = &hw->conf;
 533	struct brcms_info *wl = hw->priv;
 534	struct bcma_device *core = wl->wlc->hw->d11core;
 535	int err = 0;
 536	int new_int;
 537
 538	spin_lock_bh(&wl->lock);
 539	if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 540		brcms_c_set_beacon_listen_interval(wl->wlc,
 541						   conf->listen_interval);
 542	}
 543	if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 544		brcms_dbg_info(core, "%s: change monitor mode: %s\n", __func__,
 545			       str_true_false(conf->flags &
 546					      IEEE80211_CONF_MONITOR));
 547	if (changed & IEEE80211_CONF_CHANGE_PS)
 548		brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 549			  __func__,
 550			  str_true_false(conf->flags & IEEE80211_CONF_PS));
 551
 552	if (changed & IEEE80211_CONF_CHANGE_POWER) {
 553		err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 554		if (err < 0) {
 555			brcms_err(core, "%s: Error setting power_level\n",
 556				  __func__);
 557			goto config_out;
 558		}
 559		new_int = brcms_c_get_tx_power(wl->wlc);
 560		if (new_int != conf->power_level)
 561			brcms_err(core,
 562				  "%s: Power level req != actual, %d %d\n",
 563				  __func__, conf->power_level,
 564				  new_int);
 565	}
 566	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 567		if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 568		    conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 569			err = brcms_c_set_channel(wl->wlc,
 570						  conf->chandef.chan->hw_value);
 571		else
 572			err = -ENOTSUPP;
 573	}
 574	if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 575		err = brcms_c_set_rate_limit(wl->wlc,
 576					     conf->short_frame_max_tx_count,
 577					     conf->long_frame_max_tx_count);
 578
 579 config_out:
 580	spin_unlock_bh(&wl->lock);
 581	return err;
 582}
 583
 584static void
 585brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 586			struct ieee80211_vif *vif,
 587			struct ieee80211_bss_conf *info, u64 changed)
 588{
 589	struct brcms_info *wl = hw->priv;
 590	struct bcma_device *core = wl->wlc->hw->d11core;
 591
 592	if (changed & BSS_CHANGED_ASSOC) {
 593		/* association status changed (associated/disassociated)
 594		 * also implies a change in the AID.
 595		 */
 596		brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 597			  __func__, vif->cfg.assoc ? "" : "dis");
 598		spin_lock_bh(&wl->lock);
 599		brcms_c_associate_upd(wl->wlc, vif->cfg.assoc);
 600		spin_unlock_bh(&wl->lock);
 601	}
 602	if (changed & BSS_CHANGED_ERP_SLOT) {
 603		s8 val;
 604
 605		/* slot timing changed */
 606		if (info->use_short_slot)
 607			val = 1;
 608		else
 609			val = 0;
 610		spin_lock_bh(&wl->lock);
 611		brcms_c_set_shortslot_override(wl->wlc, val);
 612		spin_unlock_bh(&wl->lock);
 613	}
 614
 615	if (changed & BSS_CHANGED_HT) {
 616		/* 802.11n parameters changed */
 617		u16 mode = info->ht_operation_mode;
 618
 619		spin_lock_bh(&wl->lock);
 620		brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 621			mode & IEEE80211_HT_OP_MODE_PROTECTION);
 622		brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 623			mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 624		brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 625			mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 626		spin_unlock_bh(&wl->lock);
 627	}
 628	if (changed & BSS_CHANGED_BASIC_RATES) {
 629		struct ieee80211_supported_band *bi;
 630		u32 br_mask, i;
 631		u16 rate;
 632		struct brcm_rateset rs;
 633		int error;
 634
 635		/* retrieve the current rates */
 636		spin_lock_bh(&wl->lock);
 637		brcms_c_get_current_rateset(wl->wlc, &rs);
 638		spin_unlock_bh(&wl->lock);
 639
 640		br_mask = info->basic_rates;
 641		bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 642		for (i = 0; i < bi->n_bitrates; i++) {
 643			/* convert to internal rate value */
 644			rate = (bi->bitrates[i].bitrate << 1) / 10;
 645
 646			/* set/clear basic rate flag */
 647			brcms_set_basic_rate(&rs, rate, br_mask & 1);
 648			br_mask >>= 1;
 649		}
 650
 651		/* update the rate set */
 652		spin_lock_bh(&wl->lock);
 653		error = brcms_c_set_rateset(wl->wlc, &rs);
 654		spin_unlock_bh(&wl->lock);
 655		if (error)
 656			brcms_err(core, "changing basic rates failed: %d\n",
 657				  error);
 658	}
 659	if (changed & BSS_CHANGED_BEACON_INT) {
 660		/* Beacon interval changed */
 661		spin_lock_bh(&wl->lock);
 662		brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 663		spin_unlock_bh(&wl->lock);
 664	}
 665	if (changed & BSS_CHANGED_BSSID) {
 666		/* BSSID changed, for whatever reason (IBSS and managed mode) */
 667		spin_lock_bh(&wl->lock);
 668		brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 669		spin_unlock_bh(&wl->lock);
 670	}
 671	if (changed & BSS_CHANGED_SSID) {
 672		/* BSSID changed, for whatever reason (IBSS and managed mode) */
 673		spin_lock_bh(&wl->lock);
 674		brcms_c_set_ssid(wl->wlc, vif->cfg.ssid, vif->cfg.ssid_len);
 675		spin_unlock_bh(&wl->lock);
 676	}
 677	if (changed & BSS_CHANGED_BEACON) {
 678		/* Beacon data changed, retrieve new beacon (beaconing modes) */
 679		struct sk_buff *beacon;
 680		u16 tim_offset = 0;
 681
 682		spin_lock_bh(&wl->lock);
 683		beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL, 0);
 684		brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 685				       info->dtim_period);
 686		spin_unlock_bh(&wl->lock);
 687	}
 688
 689	if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 690		struct sk_buff *probe_resp;
 691
 692		spin_lock_bh(&wl->lock);
 693		probe_resp = ieee80211_proberesp_get(hw, vif);
 694		brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 695		spin_unlock_bh(&wl->lock);
 696	}
 697
 698	if (changed & BSS_CHANGED_BEACON_ENABLED) {
 699		/* Beaconing should be enabled/disabled (beaconing modes) */
 700		brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 701			  str_true_false(info->enable_beacon));
 702		if (info->enable_beacon &&
 703		    hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 704			brcms_c_enable_probe_resp(wl->wlc, true);
 705		} else {
 706			brcms_c_enable_probe_resp(wl->wlc, false);
 707		}
 708	}
 709
 710	if (changed & BSS_CHANGED_CQM) {
 711		/* Connection quality monitor config changed */
 712		brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 713			  " (implement)\n", __func__, info->cqm_rssi_thold,
 714			  info->cqm_rssi_hyst);
 715	}
 716
 717	if (changed & BSS_CHANGED_IBSS) {
 718		/* IBSS join status changed */
 719		brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 720			  __func__, str_true_false(vif->cfg.ibss_joined));
 721	}
 722
 723	if (changed & BSS_CHANGED_ARP_FILTER) {
 724		/* Hardware ARP filter address list or state changed */
 725		brcms_err(core, "%s: arp filtering: %d addresses"
 726			  " (implement)\n", __func__, vif->cfg.arp_addr_cnt);
 727	}
 728
 729	if (changed & BSS_CHANGED_QOS) {
 730		/*
 731		 * QoS for this association was enabled/disabled.
 732		 * Note that it is only ever disabled for station mode.
 733		 */
 734		brcms_err(core, "%s: qos enabled: %s (implement)\n",
 735			  __func__, str_true_false(info->qos));
 736	}
 737	return;
 738}
 739
 740static void
 741brcms_ops_configure_filter(struct ieee80211_hw *hw,
 742			unsigned int changed_flags,
 743			unsigned int *total_flags, u64 multicast)
 744{
 745	struct brcms_info *wl = hw->priv;
 746	struct bcma_device *core = wl->wlc->hw->d11core;
 747
 748	changed_flags &= MAC_FILTERS;
 749	*total_flags &= MAC_FILTERS;
 750
 751	if (changed_flags & FIF_ALLMULTI)
 752		brcms_dbg_info(core, "FIF_ALLMULTI\n");
 753	if (changed_flags & FIF_FCSFAIL)
 754		brcms_dbg_info(core, "FIF_FCSFAIL\n");
 755	if (changed_flags & FIF_CONTROL)
 756		brcms_dbg_info(core, "FIF_CONTROL\n");
 757	if (changed_flags & FIF_OTHER_BSS)
 758		brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 759	if (changed_flags & FIF_PSPOLL)
 760		brcms_dbg_info(core, "FIF_PSPOLL\n");
 761	if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 762		brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 763
 764	spin_lock_bh(&wl->lock);
 765	brcms_c_mac_promisc(wl->wlc, *total_flags);
 766	spin_unlock_bh(&wl->lock);
 767	return;
 768}
 769
 770static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 771				    struct ieee80211_vif *vif,
 772				    const u8 *mac_addr)
 773{
 774	struct brcms_info *wl = hw->priv;
 775	spin_lock_bh(&wl->lock);
 776	brcms_c_scan_start(wl->wlc);
 777	spin_unlock_bh(&wl->lock);
 778	return;
 779}
 780
 781static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 782				       struct ieee80211_vif *vif)
 783{
 784	struct brcms_info *wl = hw->priv;
 785	spin_lock_bh(&wl->lock);
 786	brcms_c_scan_stop(wl->wlc);
 787	spin_unlock_bh(&wl->lock);
 788	return;
 789}
 790
 791static int
 792brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 793		  unsigned int link_id, u16 queue,
 794		  const struct ieee80211_tx_queue_params *params)
 795{
 796	struct brcms_info *wl = hw->priv;
 797
 798	spin_lock_bh(&wl->lock);
 799	brcms_c_wme_setparams(wl->wlc, queue, params, true);
 800	spin_unlock_bh(&wl->lock);
 801
 802	return 0;
 803}
 804
 805static int
 806brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 807	       struct ieee80211_sta *sta)
 808{
 809	struct brcms_info *wl = hw->priv;
 810	struct scb *scb = &wl->wlc->pri_scb;
 811
 812	brcms_c_init_scb(scb);
 813
 814	wl->pub->global_ampdu = &(scb->scb_ampdu);
 815	wl->pub->global_ampdu->max_pdu = 16;
 816
 817	/*
 818	 * minstrel_ht initiates addBA on our behalf by calling
 819	 * ieee80211_start_tx_ba_session()
 820	 */
 821	return 0;
 822}
 823
 824static int
 825brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 826		    struct ieee80211_vif *vif,
 827		    struct ieee80211_ampdu_params *params)
 828{
 829	struct brcms_info *wl = hw->priv;
 830	struct scb *scb = &wl->wlc->pri_scb;
 831	int status;
 832	struct ieee80211_sta *sta = params->sta;
 833	enum ieee80211_ampdu_mlme_action action = params->action;
 834	u16 tid = params->tid;
 835
 836	if (WARN_ON(scb->magic != SCB_MAGIC))
 837		return -EIDRM;
 838	switch (action) {
 839	case IEEE80211_AMPDU_RX_START:
 840		break;
 841	case IEEE80211_AMPDU_RX_STOP:
 842		break;
 843	case IEEE80211_AMPDU_TX_START:
 844		spin_lock_bh(&wl->lock);
 845		status = brcms_c_aggregatable(wl->wlc, tid);
 846		spin_unlock_bh(&wl->lock);
 847		if (!status) {
 848			brcms_dbg_ht(wl->wlc->hw->d11core,
 849				     "START: tid %d is not agg\'able\n", tid);
 850			return -EINVAL;
 851		}
 852		return IEEE80211_AMPDU_TX_START_IMMEDIATE;
 853
 854	case IEEE80211_AMPDU_TX_STOP_CONT:
 855	case IEEE80211_AMPDU_TX_STOP_FLUSH:
 856	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 857		spin_lock_bh(&wl->lock);
 858		brcms_c_ampdu_flush(wl->wlc, sta, tid);
 859		spin_unlock_bh(&wl->lock);
 860		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 861		break;
 862	case IEEE80211_AMPDU_TX_OPERATIONAL:
 863		/*
 864		 * BA window size from ADDBA response ('buf_size') defines how
 865		 * many outstanding MPDUs are allowed for the BA stream by
 866		 * recipient and traffic class (this is actually unused by the
 867		 * rest of the driver). 'ampdu_factor' gives maximum AMPDU size.
 868		 */
 869		spin_lock_bh(&wl->lock);
 870		brcms_c_ampdu_tx_operational(wl->wlc, tid,
 871			(1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 872			 sta->deflink.ht_cap.ampdu_factor)) - 1);
 873		spin_unlock_bh(&wl->lock);
 874		/* Power save wakeup */
 875		break;
 876	default:
 877		brcms_err(wl->wlc->hw->d11core,
 878			  "%s: Invalid command, ignoring\n", __func__);
 879	}
 880
 881	return 0;
 882}
 883
 884static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 885{
 886	struct brcms_info *wl = hw->priv;
 887	bool blocked;
 888
 889	spin_lock_bh(&wl->lock);
 890	blocked = brcms_c_check_radio_disabled(wl->wlc);
 891	spin_unlock_bh(&wl->lock);
 892
 893	wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 894}
 895
 896static bool brcms_tx_flush_completed(struct brcms_info *wl)
 897{
 898	bool result;
 899
 900	spin_lock_bh(&wl->lock);
 901	result = brcms_c_tx_flush_completed(wl->wlc);
 902	spin_unlock_bh(&wl->lock);
 903	return result;
 904}
 905
 906static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 907			    u32 queues, bool drop)
 908{
 909	struct brcms_info *wl = hw->priv;
 910	int ret;
 911
 912	no_printk("%s: drop = %s\n", __func__, str_true_false(drop));
 913
 914	ret = wait_event_timeout(wl->tx_flush_wq,
 915				 brcms_tx_flush_completed(wl),
 916				 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 917
 918	brcms_dbg_mac80211(wl->wlc->hw->d11core,
 919			   "ret=%d\n", jiffies_to_msecs(ret));
 920}
 921
 922static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 923{
 924	struct brcms_info *wl = hw->priv;
 925	u64 tsf;
 926
 927	spin_lock_bh(&wl->lock);
 928	tsf = brcms_c_tsf_get(wl->wlc);
 929	spin_unlock_bh(&wl->lock);
 930
 931	return tsf;
 932}
 933
 934static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 935			   struct ieee80211_vif *vif, u64 tsf)
 936{
 937	struct brcms_info *wl = hw->priv;
 938
 939	spin_lock_bh(&wl->lock);
 940	brcms_c_tsf_set(wl->wlc, tsf);
 941	spin_unlock_bh(&wl->lock);
 942}
 943
 944static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw,
 945				 struct ieee80211_sta *sta, bool set)
 946{
 947	struct brcms_info *wl = hw->priv;
 948	struct sk_buff *beacon = NULL;
 949	u16 tim_offset = 0;
 950
 951	spin_lock_bh(&wl->lock);
 952	if (wl->wlc->vif)
 953		beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif,
 954						  &tim_offset, NULL, 0);
 955	if (beacon)
 956		brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 957				       wl->wlc->vif->bss_conf.dtim_period);
 958	spin_unlock_bh(&wl->lock);
 959
 960	return 0;
 961}
 962
 963static const struct ieee80211_ops brcms_ops = {
 964	.add_chanctx = ieee80211_emulate_add_chanctx,
 965	.remove_chanctx = ieee80211_emulate_remove_chanctx,
 966	.change_chanctx = ieee80211_emulate_change_chanctx,
 967	.switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
 968	.tx = brcms_ops_tx,
 969	.wake_tx_queue = ieee80211_handle_wake_tx_queue,
 970	.start = brcms_ops_start,
 971	.stop = brcms_ops_stop,
 972	.add_interface = brcms_ops_add_interface,
 973	.remove_interface = brcms_ops_remove_interface,
 974	.config = brcms_ops_config,
 975	.bss_info_changed = brcms_ops_bss_info_changed,
 976	.configure_filter = brcms_ops_configure_filter,
 977	.sw_scan_start = brcms_ops_sw_scan_start,
 978	.sw_scan_complete = brcms_ops_sw_scan_complete,
 979	.conf_tx = brcms_ops_conf_tx,
 980	.sta_add = brcms_ops_sta_add,
 981	.ampdu_action = brcms_ops_ampdu_action,
 982	.rfkill_poll = brcms_ops_rfkill_poll,
 983	.flush = brcms_ops_flush,
 984	.get_tsf = brcms_ops_get_tsf,
 985	.set_tsf = brcms_ops_set_tsf,
 986	.set_tim = brcms_ops_beacon_set_tim,
 987};
 988
 989void brcms_dpc(struct tasklet_struct *t)
 990{
 991	struct brcms_info *wl;
 992
 993	wl = from_tasklet(wl, t, tasklet);
 994
 995	spin_lock_bh(&wl->lock);
 996
 997	/* call the common second level interrupt handler */
 998	if (wl->pub->up) {
 999		if (wl->resched) {
1000			unsigned long flags;
1001
1002			spin_lock_irqsave(&wl->isr_lock, flags);
1003			brcms_c_intrsupd(wl->wlc);
1004			spin_unlock_irqrestore(&wl->isr_lock, flags);
1005		}
1006
1007		wl->resched = brcms_c_dpc(wl->wlc, true);
1008	}
1009
1010	/* brcms_c_dpc() may bring the driver down */
1011	if (!wl->pub->up)
1012		goto done;
1013
1014	/* re-schedule dpc */
1015	if (wl->resched)
1016		tasklet_schedule(&wl->tasklet);
1017	else
1018		/* re-enable interrupts */
1019		brcms_intrson(wl);
1020
1021 done:
1022	spin_unlock_bh(&wl->lock);
1023	wake_up(&wl->tx_flush_wq);
1024}
1025
1026static irqreturn_t brcms_isr(int irq, void *dev_id)
1027{
1028	struct brcms_info *wl;
1029	irqreturn_t ret = IRQ_NONE;
1030
1031	wl = (struct brcms_info *) dev_id;
1032
1033	spin_lock(&wl->isr_lock);
1034
1035	/* call common first level interrupt handler */
1036	if (brcms_c_isr(wl->wlc)) {
1037		/* schedule second level handler */
1038		tasklet_schedule(&wl->tasklet);
1039		ret = IRQ_HANDLED;
1040	}
1041
1042	spin_unlock(&wl->isr_lock);
1043
1044	return ret;
1045}
1046
1047/*
1048 * is called in brcms_pci_probe() context, therefore no locking required.
1049 */
1050static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1051{
1052	struct brcms_info *wl = hw->priv;
1053	struct brcms_c_info *wlc = wl->wlc;
1054	struct ieee80211_supported_band *band;
1055	u16 phy_type;
1056
1057	hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1058	hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1059
1060	phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1061	if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1062		band = &wlc->bandstate[BAND_2G_INDEX]->band;
1063		*band = brcms_band_2GHz_nphy_template;
1064		if (phy_type == PHY_TYPE_LCN) {
1065			/* Single stream */
1066			band->ht_cap.mcs.rx_mask[1] = 0;
1067			band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1068		}
1069		hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1070	} else {
1071		return -EPERM;
1072	}
1073
1074	/* Assume all bands use the same phy.  True for 11n devices. */
1075	if (wl->pub->_nbands > 1) {
1076		if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1077			band = &wlc->bandstate[BAND_5G_INDEX]->band;
1078			*band = brcms_band_5GHz_nphy_template;
1079			hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1080		} else {
1081			return -EPERM;
1082		}
1083	}
1084	return 0;
1085}
1086
1087/*
1088 * is called in brcms_pci_probe() context, therefore no locking required.
1089 */
1090static int ieee_hw_init(struct ieee80211_hw *hw)
1091{
1092	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1093	ieee80211_hw_set(hw, SIGNAL_DBM);
1094	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1095	ieee80211_hw_set(hw, MFP_CAPABLE);
1096
1097	hw->extra_tx_headroom = brcms_c_get_header_len();
1098	hw->queues = N_TX_QUEUES;
1099	hw->max_rates = 2;	/* Primary rate and 1 fallback rate */
1100
1101	/* channel change time is dependent on chip and band  */
1102	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1103				     BIT(NL80211_IFTYPE_AP) |
1104				     BIT(NL80211_IFTYPE_ADHOC);
1105
1106	/*
1107	 * deactivate sending probe responses by ucude, because this will
1108	 * cause problems when WPS is used.
1109	 *
1110	 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1111	 */
1112
1113	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1114
1115	hw->rate_control_algorithm = "minstrel_ht";
1116
1117	hw->sta_data_size = 0;
1118	return ieee_hw_rate_init(hw);
1119}
1120
1121/*
1122 * attach to the WL device.
1123 *
1124 * Attach to the WL device identified by vendor and device parameters.
1125 * regs is a host accessible memory address pointing to WL device registers.
1126 *
1127 * is called in brcms_bcma_probe() context, therefore no locking required.
1128 */
1129static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1130{
1131	struct brcms_info *wl = NULL;
1132	int unit, err;
1133	struct ieee80211_hw *hw;
1134	u8 perm[ETH_ALEN];
1135
1136	unit = n_adapters_found;
1137	err = 0;
1138
1139	if (unit < 0)
1140		return NULL;
1141
1142	/* allocate private info */
1143	hw = bcma_get_drvdata(pdev);
1144	if (hw != NULL)
1145		wl = hw->priv;
1146	if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1147		return NULL;
1148	wl->wiphy = hw->wiphy;
1149
1150	atomic_set(&wl->callbacks, 0);
1151
1152	init_waitqueue_head(&wl->tx_flush_wq);
1153
1154	/* setup the bottom half handler */
1155	tasklet_setup(&wl->tasklet, brcms_dpc);
1156
1157	spin_lock_init(&wl->lock);
1158	spin_lock_init(&wl->isr_lock);
1159
1160	/* common load-time initialization */
1161	wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1162	if (!wl->wlc) {
1163		wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1164			  KBUILD_MODNAME, err);
1165		goto fail;
1166	}
1167	wl->pub = brcms_c_pub(wl->wlc);
1168
1169	wl->pub->ieee_hw = hw;
1170
1171	/* register our interrupt handler */
1172	if (request_irq(pdev->irq, brcms_isr,
1173			IRQF_SHARED, KBUILD_MODNAME, wl)) {
1174		wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1175		goto fail;
1176	}
1177	wl->irq = pdev->irq;
1178
1179	/* register module */
1180	brcms_c_module_register(wl->pub, "linux", wl, NULL);
1181
1182	if (ieee_hw_init(hw)) {
1183		wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1184			  __func__);
1185		goto fail;
1186	}
1187
1188	brcms_c_regd_init(wl->wlc);
1189
1190	memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1191	if (WARN_ON(!is_valid_ether_addr(perm)))
1192		goto fail;
1193	SET_IEEE80211_PERM_ADDR(hw, perm);
1194
1195	err = ieee80211_register_hw(hw);
1196	if (err)
1197		wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1198			  "%d\n", __func__, err);
1199
1200	if (wl->pub->srom_ccode[0] &&
1201	    regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1202		wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1203
1204	brcms_debugfs_attach(wl->pub);
1205	brcms_debugfs_create_files(wl->pub);
1206	n_adapters_found++;
1207	return wl;
1208
1209fail:
1210	brcms_free(wl);
1211	return NULL;
1212}
1213
1214
1215
1216/*
1217 * determines if a device is a WL device, and if so, attaches it.
1218 *
1219 * This function determines if a device pointed to by pdev is a WL device,
1220 * and if so, performs a brcms_attach() on it.
1221 *
1222 * Perimeter lock is initialized in the course of this function.
1223 */
1224static int brcms_bcma_probe(struct bcma_device *pdev)
1225{
1226	struct brcms_info *wl;
1227	struct ieee80211_hw *hw;
1228	int ret;
1229
1230	dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1231		 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1232		 pdev->irq);
1233
1234	if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1235	    (pdev->id.id != BCMA_CORE_80211))
1236		return -ENODEV;
1237
1238	hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1239	if (!hw) {
1240		pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1241		return -ENOMEM;
1242	}
1243
1244	SET_IEEE80211_DEV(hw, &pdev->dev);
1245
1246	bcma_set_drvdata(pdev, hw);
1247
1248	memset(hw->priv, 0, sizeof(*wl));
1249
1250	wl = brcms_attach(pdev);
1251	if (!wl) {
1252		pr_err("%s: brcms_attach failed!\n", __func__);
1253		ret = -ENODEV;
1254		goto err_free_ieee80211;
1255	}
1256	brcms_led_register(wl);
1257
1258	return 0;
1259
1260err_free_ieee80211:
1261	ieee80211_free_hw(hw);
1262	return ret;
1263}
1264
1265static int brcms_suspend(struct bcma_device *pdev)
1266{
1267	struct brcms_info *wl;
1268	struct ieee80211_hw *hw;
1269
1270	hw = bcma_get_drvdata(pdev);
1271	wl = hw->priv;
1272	if (!wl) {
1273		pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1274		       __func__);
1275		return -ENODEV;
1276	}
1277
1278	/* only need to flag hw is down for proper resume */
1279	spin_lock_bh(&wl->lock);
1280	wl->pub->hw_up = false;
1281	spin_unlock_bh(&wl->lock);
1282
1283	brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1284
1285	return 0;
1286}
1287
1288static int brcms_resume(struct bcma_device *pdev)
1289{
1290	return 0;
1291}
1292
1293static struct bcma_driver brcms_bcma_driver = {
1294	.name     = KBUILD_MODNAME,
1295	.probe    = brcms_bcma_probe,
1296	.suspend  = brcms_suspend,
1297	.resume   = brcms_resume,
1298	.remove   = brcms_remove,
1299	.id_table = brcms_coreid_table,
1300};
1301
1302/*
1303 * This is the main entry point for the brcmsmac driver.
1304 *
1305 * This function is scheduled upon module initialization and
1306 * does the driver registration, which result in brcms_bcma_probe()
1307 * call resulting in the driver bringup.
1308 */
1309static void brcms_driver_init(struct work_struct *work)
1310{
1311	int error;
1312
1313	error = bcma_driver_register(&brcms_bcma_driver);
1314	if (error)
1315		pr_err("%s: register returned %d\n", __func__, error);
1316}
1317
1318static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1319
1320static int __init brcms_module_init(void)
1321{
1322	brcms_debugfs_init();
1323	if (!schedule_work(&brcms_driver_work))
1324		return -EBUSY;
1325
1326	return 0;
1327}
1328
1329/*
1330 * This function unloads the brcmsmac driver from the system.
1331 *
1332 * This function unconditionally unloads the brcmsmac driver module from the
1333 * system.
1334 *
1335 */
1336static void __exit brcms_module_exit(void)
1337{
1338	cancel_work_sync(&brcms_driver_work);
1339	bcma_driver_unregister(&brcms_bcma_driver);
1340	brcms_debugfs_exit();
1341}
1342
1343module_init(brcms_module_init);
1344module_exit(brcms_module_exit);
1345
1346/*
1347 * precondition: perimeter lock has been acquired
1348 */
1349void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1350			 bool state, int prio)
1351{
1352	brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1353}
1354
1355/*
1356 * precondition: perimeter lock has been acquired
1357 */
1358void brcms_init(struct brcms_info *wl)
1359{
1360	brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1361		       wl->pub->unit);
1362	brcms_reset(wl);
1363	brcms_c_init(wl->wlc, wl->mute_tx);
1364}
1365
1366/*
1367 * precondition: perimeter lock has been acquired
1368 */
1369uint brcms_reset(struct brcms_info *wl)
1370{
1371	brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1372	brcms_c_reset(wl->wlc);
1373
1374	/* dpc will not be rescheduled */
1375	wl->resched = false;
1376
1377	/* inform publicly that interface is down */
1378	wl->pub->up = false;
1379
1380	return 0;
1381}
1382
1383void brcms_fatal_error(struct brcms_info *wl)
1384{
1385	brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1386		  wl->wlc->pub->unit);
1387	brcms_reset(wl);
1388	ieee80211_restart_hw(wl->pub->ieee_hw);
1389}
1390
1391/*
1392 * These are interrupt on/off entry points. Disable interrupts
1393 * during interrupt state transition.
1394 */
1395void brcms_intrson(struct brcms_info *wl)
1396{
1397	unsigned long flags;
1398
1399	spin_lock_irqsave(&wl->isr_lock, flags);
1400	brcms_c_intrson(wl->wlc);
1401	spin_unlock_irqrestore(&wl->isr_lock, flags);
1402}
1403
1404u32 brcms_intrsoff(struct brcms_info *wl)
1405{
1406	unsigned long flags;
1407	u32 status;
1408
1409	spin_lock_irqsave(&wl->isr_lock, flags);
1410	status = brcms_c_intrsoff(wl->wlc);
1411	spin_unlock_irqrestore(&wl->isr_lock, flags);
1412	return status;
1413}
1414
1415void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1416{
1417	unsigned long flags;
1418
1419	spin_lock_irqsave(&wl->isr_lock, flags);
1420	brcms_c_intrsrestore(wl->wlc, macintmask);
1421	spin_unlock_irqrestore(&wl->isr_lock, flags);
1422}
1423
1424/*
1425 * precondition: perimeter lock has been acquired
1426 */
1427int brcms_up(struct brcms_info *wl)
1428{
1429	int error = 0;
1430
1431	if (wl->pub->up)
1432		return 0;
1433
1434	error = brcms_c_up(wl->wlc);
1435
1436	return error;
1437}
1438
1439/*
1440 * precondition: perimeter lock has been acquired
1441 */
1442void brcms_down(struct brcms_info *wl)
1443	__must_hold(&wl->lock)
1444{
1445	uint callbacks, ret_val = 0;
1446
1447	/* call common down function */
1448	ret_val = brcms_c_down(wl->wlc);
1449	callbacks = atomic_read(&wl->callbacks) - ret_val;
1450
1451	/* wait for down callbacks to complete */
1452	spin_unlock_bh(&wl->lock);
1453
1454	/* For HIGH_only driver, it's important to actually schedule other work,
1455	 * not just spin wait since everything runs at schedule level
1456	 */
1457	SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1458
1459	spin_lock_bh(&wl->lock);
1460}
1461
1462/*
1463* precondition: perimeter lock is not acquired
1464 */
1465static void _brcms_timer(struct work_struct *work)
1466{
1467	struct brcms_timer *t = container_of(work, struct brcms_timer,
1468					     dly_wrk.work);
1469
1470	spin_lock_bh(&t->wl->lock);
1471
1472	if (t->set) {
1473		if (t->periodic) {
1474			atomic_inc(&t->wl->callbacks);
1475			ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1476						     &t->dly_wrk,
1477						     msecs_to_jiffies(t->ms));
1478		} else {
1479			t->set = false;
1480		}
1481
1482		t->fn(t->arg);
1483	}
1484
1485	atomic_dec(&t->wl->callbacks);
1486
1487	spin_unlock_bh(&t->wl->lock);
1488}
1489
1490/*
1491 * Adds a timer to the list. Caller supplies a timer function.
1492 * Is called from wlc.
1493 *
1494 * precondition: perimeter lock has been acquired
1495 */
1496struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1497				     void (*fn) (void *arg),
1498				     void *arg, const char *name)
1499{
1500	struct brcms_timer *t;
1501
1502	t = kzalloc(sizeof(*t), GFP_ATOMIC);
1503	if (!t)
1504		return NULL;
1505
1506	INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1507	t->wl = wl;
1508	t->fn = fn;
1509	t->arg = arg;
1510	t->next = wl->timers;
1511	wl->timers = t;
1512
1513#ifdef DEBUG
1514	t->name = kstrdup(name, GFP_ATOMIC);
1515#endif
1516
1517	return t;
1518}
1519
1520/*
1521 * adds only the kernel timer since it's going to be more accurate
1522 * as well as it's easier to make it periodic
1523 *
1524 * precondition: perimeter lock has been acquired
1525 */
1526void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1527{
1528	struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1529
1530#ifdef DEBUG
1531	if (t->set)
1532		brcms_dbg_info(t->wl->wlc->hw->d11core,
1533			       "%s: Already set. Name: %s, per %d\n",
1534			       __func__, t->name, periodic);
1535#endif
1536	t->ms = ms;
1537	t->periodic = (bool) periodic;
1538	if (!t->set) {
1539		t->set = true;
1540		atomic_inc(&t->wl->callbacks);
1541	}
1542
1543	ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1544}
1545
1546/*
1547 * return true if timer successfully deleted, false if still pending
1548 *
1549 * precondition: perimeter lock has been acquired
1550 */
1551bool brcms_del_timer(struct brcms_timer *t)
1552{
1553	if (t->set) {
1554		t->set = false;
1555		if (!cancel_delayed_work(&t->dly_wrk))
1556			return false;
1557
1558		atomic_dec(&t->wl->callbacks);
1559	}
1560
1561	return true;
1562}
1563
1564/*
1565 * precondition: perimeter lock has been acquired
1566 */
1567void brcms_free_timer(struct brcms_timer *t)
1568{
1569	struct brcms_info *wl = t->wl;
1570	struct brcms_timer *tmp;
1571
1572	/* delete the timer in case it is active */
1573	brcms_del_timer(t);
1574
1575	if (wl->timers == t) {
1576		wl->timers = wl->timers->next;
1577#ifdef DEBUG
1578		kfree(t->name);
1579#endif
1580		kfree(t);
1581		return;
1582
1583	}
1584
1585	tmp = wl->timers;
1586	while (tmp) {
1587		if (tmp->next == t) {
1588			tmp->next = t->next;
1589#ifdef DEBUG
1590			kfree(t->name);
1591#endif
1592			kfree(t);
1593			return;
1594		}
1595		tmp = tmp->next;
1596	}
1597
1598}
1599
1600/*
1601 * precondition: no locking required
1602 */
1603int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1604{
1605	int i, entry;
1606	const u8 *pdata;
1607	struct firmware_hdr *hdr;
1608	for (i = 0; i < wl->fw.fw_cnt; i++) {
1609		hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1610		for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1611		     entry++, hdr++) {
1612			u32 len = le32_to_cpu(hdr->len);
1613			if (le32_to_cpu(hdr->idx) == idx) {
1614				pdata = wl->fw.fw_bin[i]->data +
1615					le32_to_cpu(hdr->offset);
1616				*pbuf = kvmemdup(pdata, len, GFP_KERNEL);
1617				if (*pbuf == NULL)
1618					return -ENOMEM;
1619				return 0;
1620			}
1621		}
1622	}
1623	brcms_err(wl->wlc->hw->d11core,
1624		  "ERROR: ucode buf tag:%d can not be found!\n", idx);
1625	*pbuf = NULL;
1626	return -ENODATA;
1627}
1628
1629/*
1630 * Precondition: Since this function is called in brcms_bcma_probe() context,
1631 * no locking is required.
1632 */
1633int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1634{
1635	int i, entry;
1636	const u8 *pdata;
1637	struct firmware_hdr *hdr;
1638	for (i = 0; i < wl->fw.fw_cnt; i++) {
1639		hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1640		for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1641		     entry++, hdr++) {
1642			if (le32_to_cpu(hdr->idx) == idx) {
1643				pdata = wl->fw.fw_bin[i]->data +
1644					le32_to_cpu(hdr->offset);
1645				if (le32_to_cpu(hdr->len) != 4) {
1646					brcms_err(wl->wlc->hw->d11core,
1647						  "ERROR: fw hdr len\n");
1648					return -ENOMSG;
1649				}
1650				*n_bytes = le32_to_cpu(*((__le32 *) pdata));
1651				return 0;
1652			}
1653		}
1654	}
1655	brcms_err(wl->wlc->hw->d11core,
1656		  "ERROR: ucode tag:%d can not be found!\n", idx);
1657	return -ENOMSG;
1658}
1659
1660/*
1661 * precondition: can both be called locked and unlocked
1662 */
1663void brcms_ucode_free_buf(void *p)
1664{
1665	kvfree(p);
1666}
1667
1668/*
1669 * checks validity of all firmware images loaded from user space
1670 *
1671 * Precondition: Since this function is called in brcms_bcma_probe() context,
1672 * no locking is required.
1673 */
1674int brcms_check_firmwares(struct brcms_info *wl)
1675{
1676	int i;
1677	int entry;
1678	int rc = 0;
1679	const struct firmware *fw;
1680	const struct firmware *fw_hdr;
1681	struct firmware_hdr *ucode_hdr;
1682	for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1683		fw =  wl->fw.fw_bin[i];
1684		fw_hdr = wl->fw.fw_hdr[i];
1685		if (fw == NULL && fw_hdr == NULL) {
1686			break;
1687		} else if (fw == NULL || fw_hdr == NULL) {
1688			wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1689				  __func__);
1690			rc = -EBADF;
1691		} else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1692			wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1693				"size %zu/%zu\n", __func__, fw_hdr->size,
1694				sizeof(struct firmware_hdr));
1695			rc = -EBADF;
1696		} else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1697			wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1698				  __func__, fw->size);
1699			rc = -EBADF;
1700		} else {
1701			/* check if ucode section overruns firmware image */
1702			ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1703			for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1704			     !rc; entry++, ucode_hdr++) {
1705				if (le32_to_cpu(ucode_hdr->offset) +
1706				    le32_to_cpu(ucode_hdr->len) >
1707				    fw->size) {
1708					wiphy_err(wl->wiphy,
1709						  "%s: conflicting bin/hdr\n",
1710						  __func__);
1711					rc = -EBADF;
1712				}
1713			}
1714		}
1715	}
1716	if (rc == 0 && wl->fw.fw_cnt != i) {
1717		wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1718			wl->fw.fw_cnt);
1719		rc = -EBADF;
1720	}
1721	return rc;
1722}
1723
1724/*
1725 * precondition: perimeter lock has been acquired
1726 */
1727bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1728	__must_hold(&wl->lock)
1729{
1730	bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1731
1732	spin_unlock_bh(&wl->lock);
1733	wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1734	if (blocked)
1735		wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1736	spin_lock_bh(&wl->lock);
1737	return blocked;
1738}