rt2x00.h 26.6 KB
Newer Older
1
/*
2
	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
	<http://rt2x00.serialmonkey.com>

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the
	Free Software Foundation, Inc.,
	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/*
	Module: rt2x00
	Abstract: rt2x00 global information.
 */

#ifndef RT2X00_H
#define RT2X00_H

#include <linux/bitops.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/firmware.h>
33
#include <linux/leds.h>
34
#include <linux/mutex.h>
35
#include <linux/etherdevice.h>
36 37 38 39

#include <net/mac80211.h>

#include "rt2x00debug.h"
40
#include "rt2x00leds.h"
41
#include "rt2x00reg.h"
42
#include "rt2x00queue.h"
43 44 45 46

/*
 * Module information.
 */
Ivo van Doorn's avatar
Ivo van Doorn committed
47
#define DRV_VERSION	"2.1.8"
48 49 50 51 52 53 54 55 56 57 58 59
#define DRV_PROJECT	"http://rt2x00.serialmonkey.com"

/*
 * Debug definitions.
 * Debug output has to be enabled during compile time.
 */
#define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...)	\
	printk(__kernlvl "%s -> %s: %s - " __msg,			\
	       wiphy_name((__dev)->hw->wiphy), __FUNCTION__, __lvl, ##__args)

#define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...)	\
	printk(__kernlvl "%s -> %s: %s - " __msg,		\
60
	       KBUILD_MODNAME, __FUNCTION__, __lvl, ##__args)
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 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

#ifdef CONFIG_RT2X00_DEBUG
#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...)	\
	DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args);
#else
#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...)	\
	do { } while (0)
#endif /* CONFIG_RT2X00_DEBUG */

/*
 * Various debug levels.
 * The debug levels PANIC and ERROR both indicate serious problems,
 * for this reason they should never be ignored.
 * The special ERROR_PROBE message is for messages that are generated
 * when the rt2x00_dev is not yet initialized.
 */
#define PANIC(__dev, __msg, __args...) \
	DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
#define ERROR(__dev, __msg, __args...)	\
	DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
#define ERROR_PROBE(__msg, __args...) \
	DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
#define WARNING(__dev, __msg, __args...) \
	DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
#define NOTICE(__dev, __msg, __args...) \
	DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
#define INFO(__dev, __msg, __args...) \
	DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
#define DEBUG(__dev, __msg, __args...) \
	DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
#define EEPROM(__dev, __msg, __args...) \
	DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)

/*
 * Standard timing and size defines.
 * These values should follow the ieee80211 specifications.
 */
#define ACK_SIZE		14
#define IEEE80211_HEADER	24
#define PLCP			48
#define BEACON			100
#define PREAMBLE		144
#define SHORT_PREAMBLE		72
#define SLOT_TIME		20
#define SHORT_SLOT_TIME		9
#define SIFS			10
#define PIFS			( SIFS + SLOT_TIME )
#define SHORT_PIFS		( SIFS + SHORT_SLOT_TIME )
#define DIFS			( PIFS + SLOT_TIME )
#define SHORT_DIFS		( SHORT_PIFS + SHORT_SLOT_TIME )
#define EIFS			( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) )

/*
 * Chipset identification
 * The chipset on the device is composed of a RT and RF chip.
 * The chipset combination is important for determining device capabilities.
 */
struct rt2x00_chip {
	u16 rt;
#define RT2460		0x0101
#define RT2560		0x0201
#define RT2570		0x1201
123 124
#define RT2561s		0x0301	/* Turbo */
#define RT2561		0x0302
125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
#define RT2661		0x0401
#define RT2571		0x1300

	u16 rf;
	u32 rev;
};

/*
 * RF register values that belong to a particular channel.
 */
struct rf_channel {
	int channel;
	u32 rf1;
	u32 rf2;
	u32 rf3;
	u32 rf4;
};

143 144 145 146 147 148 149 150
/*
 * Antenna setup values.
 */
struct antenna_setup {
	enum antenna rx;
	enum antenna tx;
};

151
/*
152
 * Quality statistics about the currently active link.
153
 */
154
struct link_qual {
155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201
	/*
	 * Statistics required for Link tuning.
	 * For the average RSSI value we use the "Walking average" approach.
	 * When adding RSSI to the average value the following calculation
	 * is needed:
	 *
	 *        avg_rssi = ((avg_rssi * 7) + rssi) / 8;
	 *
	 * The advantage of this approach is that we only need 1 variable
	 * to store the average in (No need for a count and a total).
	 * But more importantly, normal average values will over time
	 * move less and less towards newly added values this results
	 * that with link tuning, the device can have a very good RSSI
	 * for a few minutes but when the device is moved away from the AP
	 * the average will not decrease fast enough to compensate.
	 * The walking average compensates this and will move towards
	 * the new values correctly allowing a effective link tuning.
	 */
	int avg_rssi;
	int false_cca;

	/*
	 * Statistics required for Signal quality calculation.
	 * For calculating the Signal quality we have to determine
	 * the total number of success and failed RX and TX frames.
	 * After that we also use the average RSSI value to help
	 * determining the signal quality.
	 * For the calculation we will use the following algorithm:
	 *
	 *         rssi_percentage = (avg_rssi * 100) / rssi_offset
	 *         rx_percentage = (rx_success * 100) / rx_total
	 *         tx_percentage = (tx_success * 100) / tx_total
	 *         avg_signal = ((WEIGHT_RSSI * avg_rssi) +
	 *                       (WEIGHT_TX * tx_percentage) +
	 *                       (WEIGHT_RX * rx_percentage)) / 100
	 *
	 * This value should then be checked to not be greated then 100.
	 */
	int rx_percentage;
	int rx_success;
	int rx_failed;
	int tx_percentage;
	int tx_success;
	int tx_failed;
#define WEIGHT_RSSI	20
#define WEIGHT_RX	40
#define WEIGHT_TX	40
202 203
};

204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240
/*
 * Antenna settings about the currently active link.
 */
struct link_ant {
	/*
	 * Antenna flags
	 */
	unsigned int flags;
#define ANTENNA_RX_DIVERSITY	0x00000001
#define ANTENNA_TX_DIVERSITY	0x00000002
#define ANTENNA_MODE_SAMPLE	0x00000004

	/*
	 * Currently active TX/RX antenna setup.
	 * When software diversity is used, this will indicate
	 * which antenna is actually used at this time.
	 */
	struct antenna_setup active;

	/*
	 * RSSI information for the different antenna's.
	 * These statistics are used to determine when
	 * to switch antenna when using software diversity.
	 *
	 *        rssi[0] -> Antenna A RSSI
	 *        rssi[1] -> Antenna B RSSI
	 */
	int rssi_history[2];

	/*
	 * Current RSSI average of the currently active antenna.
	 * Similar to the avg_rssi in the link_qual structure
	 * this value is updated by using the walking average.
	 */
	int rssi_ant;
};

241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258
/*
 * To optimize the quality of the link we need to store
 * the quality of received frames and periodically
 * optimize the link.
 */
struct link {
	/*
	 * Link tuner counter
	 * The number of times the link has been tuned
	 * since the radio has been switched on.
	 */
	u32 count;

	/*
	 * Quality measurement values.
	 */
	struct link_qual qual;

259
	/*
260
	 * TX/RX antenna setup.
261
	 */
262
	struct link_ant ant;
263

264 265 266 267
	/*
	 * Active VGC level
	 */
	int vgc_level;
268 269 270 271 272 273 274 275

	/*
	 * Work structure for scheduling periodic link tuning.
	 */
	struct delayed_work work;
};

/*
276
 * Small helper macro to work with moving/walking averages.
277
 */
278 279 280 281 282 283 284 285
#define MOVING_AVERAGE(__avg, __val, __samples) \
	( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) )

/*
 * When we lack RSSI information return something less then -80 to
 * tell the driver to tune the device to maximum sensitivity.
 */
#define DEFAULT_RSSI	( -128 )
286 287

/*
288
 * Link quality access functions.
289 290 291
 */
static inline int rt2x00_get_link_rssi(struct link *link)
{
292 293
	if (link->qual.avg_rssi && link->qual.rx_success)
		return link->qual.avg_rssi;
294 295 296 297 298 299 300 301 302 303
	return DEFAULT_RSSI;
}

static inline int rt2x00_get_link_ant_rssi(struct link *link)
{
	if (link->ant.rssi_ant && link->qual.rx_success)
		return link->ant.rssi_ant;
	return DEFAULT_RSSI;
}

304 305 306 307 308
static inline void rt2x00_reset_link_ant_rssi(struct link *link)
{
	link->ant.rssi_ant = 0;
}

309 310 311 312 313 314 315 316 317 318 319 320 321
static inline int rt2x00_get_link_ant_rssi_history(struct link *link,
						   enum antenna ant)
{
	if (link->ant.rssi_history[ant - ANTENNA_A])
		return link->ant.rssi_history[ant - ANTENNA_A];
	return DEFAULT_RSSI;
}

static inline int rt2x00_update_ant_rssi(struct link *link, int rssi)
{
	int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A];
	link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi;
	return old_rssi;
322 323 324 325
}

/*
 * Interface structure
326 327
 * Per interface configuration details, this structure
 * is allocated as the private data for ieee80211_vif.
328
 */
329
struct rt2x00_intf {
330
	/*
331 332
	 * All fields within the rt2x00_intf structure
	 * must be protected with a spinlock.
333
	 */
334
	spinlock_t lock;
335 336

	/*
337 338 339
	 * BSS configuration. Copied from the structure
	 * passed to us through the bss_info_changed()
	 * callback funtion.
340
	 */
341
	struct ieee80211_bss_conf conf;
342 343 344 345 346 347 348 349 350 351 352

	/*
	 * MAC of the device.
	 */
	u8 mac[ETH_ALEN];

	/*
	 * BBSID of the AP to associate with.
	 */
	u8 bssid[ETH_ALEN];

353 354 355 356 357 358
	/*
	 * Entry in the beacon queue which belongs to
	 * this interface. Each interface has its own
	 * dedicated beacon entry.
	 */
	struct queue_entry *beacon;
359

360 361 362 363 364
	/*
	 * Actions that needed rescheduling.
	 */
	unsigned int delayed_flags;
#define DELAYED_UPDATE_BEACON		0x00000001
365
#define DELAYED_CONFIG_ERP		0x00000002
366
#define DELAYED_LED_ASSOC		0x00000004
367 368 369
};

static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
370
{
371
	return (struct rt2x00_intf *)vif->drv_priv;
372 373
}

374 375 376
/**
 * struct hw_mode_spec: Hardware specifications structure
 *
377 378 379
 * Details about the supported modes, rates and channels
 * of a particular chipset. This is used by rt2x00lib
 * to build the ieee80211_hw_mode array for mac80211.
380 381 382 383 384
 *
 * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
 * @supported_rates: Rate types which are supported (CCK, OFDM).
 * @num_channels: Number of supported channels. This is used as array size
 *	for @tx_power_a, @tx_power_bg and @channels.
Ivo van Doorn's avatar
Ivo van Doorn committed
385
 * @channels: Device/chipset specific channel values (See &struct rf_channel).
386 387 388 389
 * @tx_power_a: TX power values for all 5.2GHz channels (may be NULL).
 * @tx_power_bg: TX power values for all 2.4GHz channels (may be NULL).
 * @tx_power_default: Default TX power value to use when either
 *	@tx_power_a or @tx_power_bg is missing.
390 391
 */
struct hw_mode_spec {
392 393 394 395 396 397 398 399 400 401
	unsigned int supported_bands;
#define SUPPORT_BAND_2GHZ	0x00000001
#define SUPPORT_BAND_5GHZ	0x00000002

	unsigned int supported_rates;
#define SUPPORT_RATE_CCK	0x00000001
#define SUPPORT_RATE_OFDM	0x00000002

	unsigned int num_channels;
	const struct rf_channel *channels;
402 403 404 405 406 407

	const u8 *tx_power_a;
	const u8 *tx_power_bg;
	u8 tx_power_default;
};

408 409 410 411 412 413 414 415 416 417 418
/*
 * Configuration structure wrapper around the
 * mac80211 configuration structure.
 * When mac80211 configures the driver, rt2x00lib
 * can precalculate values which are equal for all
 * rt2x00 drivers. Those values can be stored in here.
 */
struct rt2x00lib_conf {
	struct ieee80211_conf *conf;
	struct rf_channel rf;

419 420
	struct antenna_setup ant;

Ivo van Doorn's avatar
Ivo van Doorn committed
421
	enum ieee80211_band band;
422

423 424
	u32 basic_rates;
	u32 slot_time;
425 426 427 428 429 430 431

	short sifs;
	short pifs;
	short difs;
	short eifs;
};

432 433 434 435 436
/*
 * Configuration structure for erp settings.
 */
struct rt2x00lib_erp {
	int short_preamble;
437
	int cts_protection;
438 439 440 441 442

	int ack_timeout;
	int ack_consume_time;
};

443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473
/*
 * Configuration structure wrapper around the
 * rt2x00 interface configuration handler.
 */
struct rt2x00intf_conf {
	/*
	 * Interface type
	 */
	enum ieee80211_if_types type;

	/*
	 * TSF sync value, this is dependant on the operation type.
	 */
	enum tsf_sync sync;

	/*
	 * The MAC and BSSID addressess are simple array of bytes,
	 * these arrays are little endian, so when sending the addressess
	 * to the drivers, copy the it into a endian-signed variable.
	 *
	 * Note that all devices (except rt2500usb) have 32 bits
	 * register word sizes. This means that whatever variable we
	 * pass _must_ be a multiple of 32 bits. Otherwise the device
	 * might not accept what we are sending to it.
	 * This will also make it easier for the driver to write
	 * the data to the device.
	 */
	__le32 mac[2];
	__le32 bssid[2];
};

474 475 476 477 478 479 480 481 482 483 484 485 486 487
/*
 * rt2x00lib callback functions.
 */
struct rt2x00lib_ops {
	/*
	 * Interrupt handlers.
	 */
	irq_handler_t irq_handler;

	/*
	 * Device init handlers.
	 */
	int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
	char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
488
	u16 (*get_firmware_crc) (void *data, const size_t len);
489 490 491 492 493 494 495 496 497
	int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data,
			      const size_t len);

	/*
	 * Device initialization/deinitialization handlers.
	 */
	int (*initialize) (struct rt2x00_dev *rt2x00dev);
	void (*uninitialize) (struct rt2x00_dev *rt2x00dev);

498
	/*
499
	 * queue initialization handlers
500 501
	 */
	void (*init_rxentry) (struct rt2x00_dev *rt2x00dev,
502
			      struct queue_entry *entry);
503
	void (*init_txentry) (struct rt2x00_dev *rt2x00dev,
504
			      struct queue_entry *entry);
505

506 507 508 509 510 511
	/*
	 * Radio control handlers.
	 */
	int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
				 enum dev_state state);
	int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
512 513
	void (*link_stats) (struct rt2x00_dev *rt2x00dev,
			    struct link_qual *qual);
514 515 516 517 518 519 520
	void (*reset_tuner) (struct rt2x00_dev *rt2x00dev);
	void (*link_tuner) (struct rt2x00_dev *rt2x00dev);

	/*
	 * TX control handlers
	 */
	void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev,
521
			       struct sk_buff *skb,
522
			       struct txentry_desc *txdesc);
523
	int (*write_tx_data) (struct queue_entry *entry);
524
	int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
525
				struct sk_buff *skb);
526
	void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
527
			       const enum data_queue_qid queue);
528 529 530 531

	/*
	 * RX control handlers
	 */
532 533
	void (*fill_rxdone) (struct queue_entry *entry,
			     struct rxdone_entry_desc *rxdesc);
534 535 536 537

	/*
	 * Configuration handlers.
	 */
538 539
	int (*beacon_update) (struct ieee80211_hw *hw, struct sk_buff *bcn);

Ivo van Doorn's avatar
Ivo van Doorn committed
540 541
	void (*config_filter) (struct rt2x00_dev *rt2x00dev,
			       const unsigned int filter_flags);
542 543 544 545 546 547 548 549
	void (*config_intf) (struct rt2x00_dev *rt2x00dev,
			     struct rt2x00_intf *intf,
			     struct rt2x00intf_conf *conf,
			     const unsigned int flags);
#define CONFIG_UPDATE_TYPE		( 1 << 1 )
#define CONFIG_UPDATE_MAC		( 1 << 2 )
#define CONFIG_UPDATE_BSSID		( 1 << 3 )

Ivo van Doorn's avatar
Ivo van Doorn committed
550 551
	void (*config_erp) (struct rt2x00_dev *rt2x00dev,
			    struct rt2x00lib_erp *erp);
552 553 554
	void (*config) (struct rt2x00_dev *rt2x00dev,
			struct rt2x00lib_conf *libconf,
			const unsigned int flags);
555 556 557 558 559 560 561 562 563 564 565 566 567 568
#define CONFIG_UPDATE_PHYMODE		( 1 << 1 )
#define CONFIG_UPDATE_CHANNEL		( 1 << 2 )
#define CONFIG_UPDATE_TXPOWER		( 1 << 3 )
#define CONFIG_UPDATE_ANTENNA		( 1 << 4 )
#define CONFIG_UPDATE_SLOT_TIME 	( 1 << 5 )
#define CONFIG_UPDATE_BEACON_INT	( 1 << 6 )
#define CONFIG_UPDATE_ALL		0xffff
};

/*
 * rt2x00 driver callback operation structure.
 */
struct rt2x00_ops {
	const char *name;
569 570
	const unsigned int max_sta_intf;
	const unsigned int max_ap_intf;
571 572
	const unsigned int eeprom_size;
	const unsigned int rf_size;
573
	const unsigned int tx_queues;
574 575 576 577
	const struct data_queue_desc *rx;
	const struct data_queue_desc *tx;
	const struct data_queue_desc *bcn;
	const struct data_queue_desc *atim;
578 579 580 581 582 583 584
	const struct rt2x00lib_ops *lib;
	const struct ieee80211_ops *hw;
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
	const struct rt2x00debug *debugfs;
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
};

585 586 587 588 589 590 591 592 593 594 595 596 597
/*
 * rt2x00 device flags
 */
enum rt2x00_flags {
	/*
	 * Device state flags
	 */
	DEVICE_PRESENT,
	DEVICE_REGISTERED_HW,
	DEVICE_INITIALIZED,
	DEVICE_STARTED,
	DEVICE_STARTED_SUSPEND,
	DEVICE_ENABLED_RADIO,
598
	DEVICE_DISABLED_RADIO_HW,
599 600 601 602 603

	/*
	 * Driver features
	 */
	DRIVER_REQUIRE_FIRMWARE,
604 605
	DRIVER_REQUIRE_BEACON_GUARD,
	DRIVER_REQUIRE_ATIM_QUEUE,
Ivo van Doorn's avatar
Ivo van Doorn committed
606
	DRIVER_REQUIRE_SCHEDULED,
607
	DRIVER_REQUIRE_DMA,
608 609 610 611 612 613 614 615 616 617 618 619 620

	/*
	 * Driver configuration
	 */
	CONFIG_SUPPORT_HW_BUTTON,
	CONFIG_FRAME_TYPE,
	CONFIG_RF_SEQUENCE,
	CONFIG_EXTERNAL_LNA_A,
	CONFIG_EXTERNAL_LNA_BG,
	CONFIG_DOUBLE_ANTENNA,
	CONFIG_DISABLE_LINK_TUNING,
};

621 622 623 624 625 626 627 628 629 630 631
/*
 * rt2x00 device structure.
 */
struct rt2x00_dev {
	/*
	 * Device structure.
	 * The structure stored in here depends on the
	 * system bus (PCI or USB).
	 * When accessing this variable, the rt2x00dev_{pci,usb}
	 * macro's should be used for correct typecasting.
	 */
632
	struct device *dev;
633 634 635 636 637 638 639 640 641 642

	/*
	 * Callback functions.
	 */
	const struct rt2x00_ops *ops;

	/*
	 * IEEE80211 control structure.
	 */
	struct ieee80211_hw *hw;
643 644
	struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
	enum ieee80211_band curr_band;
645 646 647 648 649 650

	/*
	 * rfkill structure for RF state switching support.
	 * This will only be compiled in when required.
	 */
#ifdef CONFIG_RT2X00_LIB_RFKILL
651
	unsigned long rfkill_state;
652 653
#define RFKILL_STATE_ALLOCATED		1
#define RFKILL_STATE_REGISTERED		2
654
	struct rfkill *rfkill;
655
	struct delayed_work rfkill_work;
656 657 658 659 660 661 662
#endif /* CONFIG_RT2X00_LIB_RFKILL */

	/*
	 * If enabled, the debugfs interface structures
	 * required for deregistration of debugfs.
	 */
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
663
	struct rt2x00debug_intf *debugfs_intf;
664 665
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */

666 667 668 669 670 671 672 673 674 675 676
	/*
	 * LED structure for changing the LED status
	 * by mac8011 or the kernel.
	 */
#ifdef CONFIG_RT2X00_LIB_LEDS
	struct rt2x00_led led_radio;
	struct rt2x00_led led_assoc;
	struct rt2x00_led led_qual;
	u16 led_mcu_reg;
#endif /* CONFIG_RT2X00_LIB_LEDS */

677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693
	/*
	 * Device flags.
	 * In these flags the current status and some
	 * of the device capabilities are stored.
	 */
	unsigned long flags;

	/*
	 * Chipset identification.
	 */
	struct rt2x00_chip chip;

	/*
	 * hw capability specifications.
	 */
	struct hw_mode_spec spec;

694 695 696 697 698 699 700
	/*
	 * This is the default TX/RX antenna setup as indicated
	 * by the device's EEPROM. When mac80211 sets its
	 * antenna value to 0 we should be using these values.
	 */
	struct antenna_setup default_ant;

701 702
	/*
	 * Register pointers
703 704
	 * csr.base: CSR base register address. (PCI)
	 * csr.cache: CSR cache for usb_control_msg. (USB)
705
	 */
706 707 708 709
	union csr {
		void __iomem *base;
		void *cache;
	} csr;
710

711 712 713 714 715 716 717 718 719 720 721 722
	/*
	 * Mutex to protect register accesses on USB devices.
	 * There are 2 reasons this is needed, one is to ensure
	 * use of the csr_cache (for USB devices) by one thread
	 * isn't corrupted by another thread trying to access it.
	 * The other is that access to BBP and RF registers
	 * require multiple BUS transactions and if another thread
	 * attempted to access one of those registers at the same
	 * time one of the writes could silently fail.
	 */
	struct mutex usb_cache_mutex;

723 724 725 726 727 728 729
	/*
	 * Current packet filter configuration for the device.
	 * This contains all currently active FIF_* flags send
	 * to us by mac80211 during configure_filter().
	 */
	unsigned int packet_filter;

730
	/*
731 732 733 734
	 * Interface details:
	 *  - Open ap interface count.
	 *  - Open sta interface count.
	 *  - Association count.
735
	 */
736 737 738
	unsigned int intf_ap_count;
	unsigned int intf_sta_count;
	unsigned int intf_associated;
739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759

	/*
	 * Link quality
	 */
	struct link link;

	/*
	 * EEPROM data.
	 */
	__le16 *eeprom;

	/*
	 * Active RF register values.
	 * These are stored here so we don't need
	 * to read the rf registers and can directly
	 * use this value instead.
	 * This field should be accessed by using
	 * rt2x00_rf_read() and rt2x00_rf_write().
	 */
	u32 *rf;

760 761 762 763 764
	/*
	 * USB Max frame size (for rt2500usb & rt73usb).
	 */
	u16 usb_maxpacket;

765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791
	/*
	 * Current TX power value.
	 */
	u16 tx_power;

	/*
	 * Rssi <-> Dbm offset
	 */
	u8 rssi_offset;

	/*
	 * Frequency offset (for rt61pci & rt73usb).
	 */
	u8 freq_offset;

	/*
	 * Low level statistics which will have
	 * to be kept up to date while device is running.
	 */
	struct ieee80211_low_level_stats low_level_stats;

	/*
	 * RX configuration information.
	 */
	struct ieee80211_rx_status rx_status;

	/*
792
	 * Scheduled work.
793 794 795
	 * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
	 * which means it cannot be placed on the hw->workqueue
	 * due to RTNL locking requirements.
796
	 */
797
	struct work_struct intf_work;
798
	struct work_struct filter_work;
799 800

	/*
801 802
	 * Data queue arrays for RX, TX and Beacon.
	 * The Beacon array also contains the Atim queue
803 804
	 * if that is supported by the device.
	 */
805
	unsigned int data_queues;
806 807 808
	struct data_queue *rx;
	struct data_queue *tx;
	struct data_queue *bcn;
809 810 811 812 813 814 815 816 817 818 819

	/*
	 * Firmware image.
	 */
	const struct firmware *fw;
};

/*
 * Generic RF access.
 * The RF is being accessed by word index.
 */
Adam Baker's avatar
Adam Baker committed
820
static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
821 822 823 824 825
				  const unsigned int word, u32 *data)
{
	*data = rt2x00dev->rf[word];
}

Adam Baker's avatar
Adam Baker committed
826
static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
827 828 829 830 831 832 833 834 835
				   const unsigned int word, u32 data)
{
	rt2x00dev->rf[word] = data;
}

/*
 *  Generic EEPROM access.
 * The EEPROM is being accessed by word index.
 */
Adam Baker's avatar
Adam Baker committed
836
static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
837 838 839 840 841
				       const unsigned int word)
{
	return (void *)&rt2x00dev->eeprom[word];
}

Adam Baker's avatar
Adam Baker committed
842
static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
843 844 845 846 847
				      const unsigned int word, u16 *data)
{
	*data = le16_to_cpu(rt2x00dev->eeprom[word]);
}

Adam Baker's avatar
Adam Baker committed
848
static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878
				       const unsigned int word, u16 data)
{
	rt2x00dev->eeprom[word] = cpu_to_le16(data);
}

/*
 * Chipset handlers
 */
static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
				   const u16 rt, const u16 rf, const u32 rev)
{
	INFO(rt2x00dev,
	     "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n",
	     rt, rf, rev);

	rt2x00dev->chip.rt = rt;
	rt2x00dev->chip.rf = rf;
	rt2x00dev->chip.rev = rev;
}

static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip)
{
	return (chipset->rt == chip);
}

static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip)
{
	return (chipset->rf == chip);
}

879
static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset)
880 881 882 883
{
	return chipset->rev;
}

884 885
static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset,
				   const u32 rev)
886
{
887 888
	return (((chipset->rev & 0xffff0) == rev) &&
		!!(chipset->rev & 0x0000f));
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907
}

/*
 * Duration calculations
 * The rate variable passed is: 100kbs.
 * To convert from bytes to bits we multiply size with 8,
 * then the size is multiplied with 10 to make the
 * real rate -> rate argument correction.
 */
static inline u16 get_duration(const unsigned int size, const u8 rate)
{
	return ((size * 8 * 10) / rate);
}

static inline u16 get_duration_res(const unsigned int size, const u8 rate)
{
	return ((size * 8 * 10) % rate);
}

908
/**
909 910 911
 * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
 * @rt2x00dev: Pointer to &struct rt2x00_dev.
 * @skb: The skb to map.
912
 */
913
void rt2x00queue_map_txskb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb);
914

915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930
/**
 * rt2x00queue_create_tx_descriptor - Create TX descriptor from mac80211 input
 * @entry: The entry which will be used to transfer the TX frame.
 * @txdesc: rt2x00 TX descriptor which will be initialized by this function.
 *
 * This function will initialize the &struct txentry_desc based on information
 * from mac80211. This descriptor can then be used by rt2x00lib and the drivers
 * to correctly initialize the hardware descriptor.
 * Note that before calling this function the skb->cb array must be untouched
 * by rt2x00lib. Only after this function completes will it be save to
 * overwrite the skb->cb information.
 * The reason for this is that mac80211 writes its own tx information into
 * the skb->cb array, and this function will use that information to initialize
 * the &struct txentry_desc structure.
 */
void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
931
				      struct txentry_desc *txdesc);
932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947

/**
 * rt2x00queue_write_tx_descriptor - Write TX descriptor to hardware
 * @entry: The entry which will be used to transfer the TX frame.
 * @txdesc: TX descriptor which will be used to write hardware descriptor
 *
 * This function will write a TX descriptor initialized by
 * &rt2x00queue_create_tx_descriptor to the hardware. After this call
 * has completed the frame is now owned by the hardware, the hardware
 * queue will have automatically be kicked unless this frame was generated
 * by rt2x00lib, in which case the frame is "special" and must be kicked
 * by the caller.
 */
void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
				     struct txentry_desc *txdesc);

948
/**
949
 * rt2x00queue_get_queue - Convert queue index to queue pointer
950
 * @rt2x00dev: Pointer to &struct rt2x00_dev.
951
 * @queue: rt2x00 queue index (see &enum data_queue_qid).
952
 */
953
struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
954
					 const enum data_queue_qid queue);
955 956 957

/**
 * rt2x00queue_get_entry - Get queue entry where the given index points to.
Ivo van Doorn's avatar
Ivo van Doorn committed
958
 * @queue: Pointer to &struct data_queue from where we obtain the entry.
959 960 961 962 963
 * @index: Index identifier for obtaining the correct index.
 */
struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
					  enum queue_index index);

964 965 966 967
/*
 * Interrupt context handlers.
 */
void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
968 969
void rt2x00lib_txdone(struct queue_entry *entry,
		      struct txdone_entry_desc *txdesc);
970 971
void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
		      struct queue_entry *entry);
972 973 974 975

/*
 * mac80211 handlers.
 */
976
int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
977 978 979 980 981 982 983
int rt2x00mac_start(struct ieee80211_hw *hw);
void rt2x00mac_stop(struct ieee80211_hw *hw);
int rt2x00mac_add_interface(struct ieee80211_hw *hw,
			    struct ieee80211_if_init_conf *conf);
void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
				struct ieee80211_if_init_conf *conf);
int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
984 985
int rt2x00mac_config_interface(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
986
			       struct ieee80211_if_conf *conf);
Ivo van Doorn's avatar
Ivo van Doorn committed
987 988 989 990
void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
				unsigned int changed_flags,
				unsigned int *total_flags,
				int mc_count, struct dev_addr_list *mc_list);
991 992 993 994
int rt2x00mac_get_stats(struct ieee80211_hw *hw,
			struct ieee80211_low_level_stats *stats);
int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw,
			   struct ieee80211_tx_queue_stats *stats);
995 996 997 998
void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif,
				struct ieee80211_bss_conf *bss_conf,
				u32 changes);
Johannes Berg's avatar
Johannes Berg committed
999
int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
		      const struct ieee80211_tx_queue_params *params);

/*
 * Driver allocation handlers.
 */
int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
#ifdef CONFIG_PM
int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
#endif /* CONFIG_PM */

#endif /* RT2X00_H */