drivers/net/wireless/rt2x00/rt2x00.h

   1 /*
   2         Copyright (C) 2010 Willow Garage <http://www.willowgarage.com>
   3         Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
   4         Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
   5         <http://rt2x00.serialmonkey.com>
   6
   7         This program is free software; you can redistribute it and/or modify
   8         it under the terms of the GNU General Public License as published by
   9         the Free Software Foundation; either version 2 of the License, or
  10         (at your option) any later version.
  11
  12         This program is distributed in the hope that it will be useful,
  13         but WITHOUT ANY WARRANTY; without even the implied warranty of
  14         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15         GNU General Public License for more details.
  16
  17         You should have received a copy of the GNU General Public License
  18         along with this program; if not, write to the
  19         Free Software Foundation, Inc.,
  20         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21  */
  22
  23 /*
  24         Module: rt2x00
  25         Abstract: rt2x00 global information.
  26  */
  27
  28 #ifndef RT2X00_H
  29 #define RT2X00_H
  30
  31 #include <linux/bitops.h>
  32 #include <linux/skbuff.h>
  33 #include <linux/workqueue.h>
  34 #include <linux/firmware.h>
  35 #include <linux/leds.h>
  36 #include <linux/mutex.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/input-polldev.h>
  39 #include <linux/kfifo.h>
  40
  41 #include <net/mac80211.h>
  42
  43 #include "rt2x00debug.h"
  44 #include "rt2x00dump.h"
  45 #include "rt2x00leds.h"
  46 #include "rt2x00reg.h"
  47 #include "rt2x00queue.h"
  48
  49 /*
  50  * Module information.
  51  */
  52 #define DRV_VERSION     "2.3.0"
  53 #define DRV_PROJECT     "http://rt2x00.serialmonkey.com"
  54
  55 /*
  56  * Debug definitions.
  57  * Debug output has to be enabled during compile time.
  58  */
  59 #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...)     \
  60         printk(__kernlvl "%s -> %s: %s - " __msg,                       \
  61                wiphy_name((__dev)->hw->wiphy), __func__, __lvl, ##__args)
  62
  63 #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...)  \
  64         printk(__kernlvl "%s -> %s: %s - " __msg,               \
  65                KBUILD_MODNAME, __func__, __lvl, ##__args)
  66
  67 #ifdef CONFIG_RT2X00_DEBUG
  68 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
  69         DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args)
  70 #else
  71 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
  72         do { } while (0)
  73 #endif /* CONFIG_RT2X00_DEBUG */
  74
  75 /*
  76  * Various debug levels.
  77  * The debug levels PANIC and ERROR both indicate serious problems,
  78  * for this reason they should never be ignored.
  79  * The special ERROR_PROBE message is for messages that are generated
  80  * when the rt2x00_dev is not yet initialized.
  81  */
  82 #define PANIC(__dev, __msg, __args...) \
  83         DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
  84 #define ERROR(__dev, __msg, __args...)  \
  85         DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
  86 #define ERROR_PROBE(__msg, __args...) \
  87         DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
  88 #define WARNING(__dev, __msg, __args...) \
  89         DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
  90 #define NOTICE(__dev, __msg, __args...) \
  91         DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
  92 #define INFO(__dev, __msg, __args...) \
  93         DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
  94 #define DEBUG(__dev, __msg, __args...) \
  95         DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
  96 #define EEPROM(__dev, __msg, __args...) \
  97         DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
  98
  99 /*
 100  * Duration calculations
 101  * The rate variable passed is: 100kbs.
 102  * To convert from bytes to bits we multiply size with 8,
 103  * then the size is multiplied with 10 to make the
 104  * real rate -> rate argument correction.
 105  */
 106 #define GET_DURATION(__size, __rate)    (((__size) * 8 * 10) / (__rate))
 107 #define GET_DURATION_RES(__size, __rate)(((__size) * 8 * 10) % (__rate))
 108
 109 /*
 110  * Determine the number of L2 padding bytes required between the header and
 111  * the payload.
 112  */
 113 #define L2PAD_SIZE(__hdrlen)    (-(__hdrlen) & 3)
 114
 115 /*
 116  * Determine the alignment requirement,
 117  * to make sure the 802.11 payload is padded to a 4-byte boundrary
 118  * we must determine the address of the payload and calculate the
 119  * amount of bytes needed to move the data.
 120  */
 121 #define ALIGN_SIZE(__skb, __header) \
 122         (  ((unsigned long)((__skb)->data + (__header))) & 3 )
 123
 124 /*
 125  * Constants for extra TX headroom for alignment purposes.
 126  */
 127 #define RT2X00_ALIGN_SIZE       4 /* Only whole frame needs alignment */
 128 #define RT2X00_L2PAD_SIZE       8 /* Both header & payload need alignment */
 129
 130 /*
 131  * Standard timing and size defines.
 132  * These values should follow the ieee80211 specifications.
 133  */
 134 #define ACK_SIZE                14
 135 #define IEEE80211_HEADER        24
 136 #define PLCP                    48
 137 #define BEACON                  100
 138 #define PREAMBLE                144
 139 #define SHORT_PREAMBLE          72
 140 #define SLOT_TIME               20
 141 #define SHORT_SLOT_TIME         9
 142 #define SIFS                    10
 143 #define PIFS                    ( SIFS + SLOT_TIME )
 144 #define SHORT_PIFS              ( SIFS + SHORT_SLOT_TIME )
 145 #define DIFS                    ( PIFS + SLOT_TIME )
 146 #define SHORT_DIFS              ( SHORT_PIFS + SHORT_SLOT_TIME )
 147 #define EIFS                    ( SIFS + DIFS + \
 148                                   GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
 149 #define SHORT_EIFS              ( SIFS + SHORT_DIFS + \
 150                                   GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
 151
 152 /*
 153  * Structure for average calculation
 154  * The avg field contains the actual average value,
 155  * but avg_weight is internally used during calculations
 156  * to prevent rounding errors.
 157  */
 158 struct avg_val {
 159         int avg;
 160         int avg_weight;
 161 };
 162
 163 enum rt2x00_chip_intf {
 164         RT2X00_CHIP_INTF_PCI,
 165         RT2X00_CHIP_INTF_PCIE,
 166         RT2X00_CHIP_INTF_USB,
 167         RT2X00_CHIP_INTF_SOC,
 168 };
 169
 170 /*
 171  * Chipset identification
 172  * The chipset on the device is composed of a RT and RF chip.
 173  * The chipset combination is important for determining device capabilities.
 174  */
 175 struct rt2x00_chip {
 176         u16 rt;
 177 #define RT2460          0x2460
 178 #define RT2560          0x2560
 179 #define RT2570          0x2570
 180 #define RT2661          0x2661
 181 #define RT2573          0x2573
 182 #define RT2860          0x2860  /* 2.4GHz */
 183 #define RT2872          0x2872  /* WSOC */
 184 #define RT2883          0x2883  /* WSOC */
 185 #define RT3070          0x3070
 186 #define RT3071          0x3071
 187 #define RT3090          0x3090  /* 2.4GHz PCIe */
 188 #define RT3390          0x3390
 189 #define RT3572          0x3572
 190 #define RT3593          0x3593  /* PCIe */
 191 #define RT3883          0x3883  /* WSOC */
 192
 193         u16 rf;
 194         u16 rev;
 195
 196         enum rt2x00_chip_intf intf;
 197 };
 198
 199 /*
 200  * RF register values that belong to a particular channel.
 201  */
 202 struct rf_channel {
 203         int channel;
 204         u32 rf1;
 205         u32 rf2;
 206         u32 rf3;
 207         u32 rf4;
 208 };
 209
 210 /*
 211  * Channel information structure
 212  */
 213 struct channel_info {
 214         unsigned int flags;
 215 #define GEOGRAPHY_ALLOWED       0x00000001
 216
 217         short max_power;
 218         short default_power1;
 219         short default_power2;
 220 };
 221
 222 /*
 223  * Antenna setup values.
 224  */
 225 struct antenna_setup {
 226         enum antenna rx;
 227         enum antenna tx;
 228 };
 229
 230 /*
 231  * Quality statistics about the currently active link.
 232  */
 233 struct link_qual {
 234         /*
 235          * Statistics required for Link tuning by driver
 236          * The rssi value is provided by rt2x00lib during the
 237          * link_tuner() callback function.
 238          * The false_cca field is filled during the link_stats()
 239          * callback function and could be used during the
 240          * link_tuner() callback function.
 241          */
 242         int rssi;
 243         int false_cca;
 244
 245         /*
 246          * VGC levels
 247          * Hardware driver will tune the VGC level during each call
 248          * to the link_tuner() callback function. This vgc_level is
 249          * is determined based on the link quality statistics like
 250          * average RSSI and the false CCA count.
 251          *
 252          * In some cases the drivers need to differentiate between
 253          * the currently "desired" VGC level and the level configured
 254          * in the hardware. The latter is important to reduce the
 255          * number of BBP register reads to reduce register access
 256          * overhead. For this reason we store both values here.
 257          */
 258         u8 vgc_level;
 259         u8 vgc_level_reg;
 260
 261         /*
 262          * Statistics required for Signal quality calculation.
 263          * These fields might be changed during the link_stats()
 264          * callback function.
 265          */
 266         int rx_success;
 267         int rx_failed;
 268         int tx_success;
 269         int tx_failed;
 270 };
 271
 272 /*
 273  * Antenna settings about the currently active link.
 274  */
 275 struct link_ant {
 276         /*
 277          * Antenna flags
 278          */
 279         unsigned int flags;
 280 #define ANTENNA_RX_DIVERSITY    0x00000001
 281 #define ANTENNA_TX_DIVERSITY    0x00000002
 282 #define ANTENNA_MODE_SAMPLE     0x00000004
 283
 284         /*
 285          * Currently active TX/RX antenna setup.
 286          * When software diversity is used, this will indicate
 287          * which antenna is actually used at this time.
 288          */
 289         struct antenna_setup active;
 290
 291         /*
 292          * RSSI history information for the antenna.
 293          * Used to determine when to switch antenna
 294          * when using software diversity.
 295          */
 296         int rssi_history;
 297
 298         /*
 299          * Current RSSI average of the currently active antenna.
 300          * Similar to the avg_rssi in the link_qual structure
 301          * this value is updated by using the walking average.
 302          */
 303         struct avg_val rssi_ant;
 304 };
 305
 306 /*
 307  * To optimize the quality of the link we need to store
 308  * the quality of received frames and periodically
 309  * optimize the link.
 310  */
 311 struct link {
 312         /*
 313          * Link tuner counter
 314          * The number of times the link has been tuned
 315          * since the radio has been switched on.
 316          */
 317         u32 count;
 318
 319         /*
 320          * Quality measurement values.
 321          */
 322         struct link_qual qual;
 323
 324         /*
 325          * TX/RX antenna setup.
 326          */
 327         struct link_ant ant;
 328
 329         /*
 330          * Currently active average RSSI value
 331          */
 332         struct avg_val avg_rssi;
 333
 334         /*
 335          * Work structure for scheduling periodic link tuning.
 336          */
 337         struct delayed_work work;
 338
 339         /*
 340          * Work structure for scheduling periodic watchdog monitoring.
 341          * This work must be scheduled on the kernel workqueue, while
 342          * all other work structures must be queued on the mac80211
 343          * workqueue. This guarantees that the watchdog can schedule
 344          * other work structures and wait for their completion in order
 345          * to bring the device/driver back into the desired state.
 346          */
 347         struct delayed_work watchdog_work;
 348 };
 349
 350 enum rt2x00_delayed_flags {
 351         DELAYED_UPDATE_BEACON,
 352 };
 353
 354 /*
 355  * Interface structure
 356  * Per interface configuration details, this structure
 357  * is allocated as the private data for ieee80211_vif.
 358  */
 359 struct rt2x00_intf {
 360         /*
 361          * beacon->skb must be protected with the mutex.
 362          */
 363         struct mutex beacon_skb_mutex;
 364
 365         /*
 366          * Entry in the beacon queue which belongs to
 367          * this interface. Each interface has its own
 368          * dedicated beacon entry.
 369          */
 370         struct queue_entry *beacon;
 371
 372         /*
 373          * Actions that needed rescheduling.
 374          */
 375         unsigned long delayed_flags;
 376
 377         /*
 378          * Software sequence counter, this is only required
 379          * for hardware which doesn't support hardware
 380          * sequence counting.
 381          */
 382         spinlock_t seqlock;
 383         u16 seqno;
 384 };
 385
 386 static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
 387 {
 388         return (struct rt2x00_intf *)vif->drv_priv;
 389 }
 390
 391 /**
 392  * struct hw_mode_spec: Hardware specifications structure
 393  *
 394  * Details about the supported modes, rates and channels
 395  * of a particular chipset. This is used by rt2x00lib
 396  * to build the ieee80211_hw_mode array for mac80211.
 397  *
 398  * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
 399  * @supported_rates: Rate types which are supported (CCK, OFDM).
 400  * @num_channels: Number of supported channels. This is used as array size
 401  *      for @tx_power_a, @tx_power_bg and @channels.
 402  * @channels: Device/chipset specific channel values (See &struct rf_channel).
 403  * @channels_info: Additional information for channels (See &struct channel_info).
 404  * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
 405  */
 406 struct hw_mode_spec {
 407         unsigned int supported_bands;
 408 #define SUPPORT_BAND_2GHZ       0x00000001
 409 #define SUPPORT_BAND_5GHZ       0x00000002
 410
 411         unsigned int supported_rates;
 412 #define SUPPORT_RATE_CCK        0x00000001
 413 #define SUPPORT_RATE_OFDM       0x00000002
 414
 415         unsigned int num_channels;
 416         const struct rf_channel *channels;
 417         const struct channel_info *channels_info;
 418
 419         struct ieee80211_sta_ht_cap ht;
 420 };
 421
 422 /*
 423  * Configuration structure wrapper around the
 424  * mac80211 configuration structure.
 425  * When mac80211 configures the driver, rt2x00lib
 426  * can precalculate values which are equal for all
 427  * rt2x00 drivers. Those values can be stored in here.
 428  */
 429 struct rt2x00lib_conf {
 430         struct ieee80211_conf *conf;
 431
 432         struct rf_channel rf;
 433         struct channel_info channel;
 434 };
 435
 436 /*
 437  * Configuration structure for erp settings.
 438  */
 439 struct rt2x00lib_erp {
 440         int short_preamble;
 441         int cts_protection;
 442
 443         u32 basic_rates;
 444
 445         int slot_time;
 446
 447         short sifs;
 448         short pifs;
 449         short difs;
 450         short eifs;
 451
 452         u16 beacon_int;
 453         u16 ht_opmode;
 454 };
 455
 456 /*
 457  * Configuration structure for hardware encryption.
 458  */
 459 struct rt2x00lib_crypto {
 460         enum cipher cipher;
 461
 462         enum set_key_cmd cmd;
 463         const u8 *address;
 464
 465         u32 bssidx;
 466         u32 aid;
 467
 468         u8 key[16];
 469         u8 tx_mic[8];
 470         u8 rx_mic[8];
 471 };
 472
 473 /*
 474  * Configuration structure wrapper around the
 475  * rt2x00 interface configuration handler.
 476  */
 477 struct rt2x00intf_conf {
 478         /*
 479          * Interface type
 480          */
 481         enum nl80211_iftype type;
 482
 483         /*
 484          * TSF sync value, this is dependant on the operation type.
 485          */
 486         enum tsf_sync sync;
 487
 488         /*
 489          * The MAC and BSSID addressess are simple array of bytes,
 490          * these arrays are little endian, so when sending the addressess
 491          * to the drivers, copy the it into a endian-signed variable.
 492          *
 493          * Note that all devices (except rt2500usb) have 32 bits
 494          * register word sizes. This means that whatever variable we
 495          * pass _must_ be a multiple of 32 bits. Otherwise the device
 496          * might not accept what we are sending to it.
 497          * This will also make it easier for the driver to write
 498          * the data to the device.
 499          */
 500         __le32 mac[2];
 501         __le32 bssid[2];
 502 };
 503
 504 /*
 505  * rt2x00lib callback functions.
 506  */
 507 struct rt2x00lib_ops {
 508         /*
 509          * Interrupt handlers.
 510          */
 511         irq_handler_t irq_handler;
 512
 513         /*
 514          * Threaded Interrupt handlers.
 515          */
 516         irq_handler_t irq_handler_thread;
 517
 518         /*
 519          * TX status tasklet handler.
 520          */
 521         void (*txstatus_tasklet) (unsigned long data);
 522
 523         /*
 524          * Device init handlers.
 525          */
 526         int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
 527         char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
 528         int (*check_firmware) (struct rt2x00_dev *rt2x00dev,
 529                                const u8 *data, const size_t len);
 530         int (*load_firmware) (struct rt2x00_dev *rt2x00dev,
 531                               const u8 *data, const size_t len);
 532
 533         /*
 534          * Device initialization/deinitialization handlers.
 535          */
 536         int (*initialize) (struct rt2x00_dev *rt2x00dev);
 537         void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
 538
 539         /*
 540          * queue initialization handlers
 541          */
 542         bool (*get_entry_state) (struct queue_entry *entry);
 543         void (*clear_entry) (struct queue_entry *entry);
 544
 545         /*
 546          * Radio control handlers.
 547          */
 548         int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
 549                                  enum dev_state state);
 550         int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
 551         void (*link_stats) (struct rt2x00_dev *rt2x00dev,
 552                             struct link_qual *qual);
 553         void (*reset_tuner) (struct rt2x00_dev *rt2x00dev,
 554                              struct link_qual *qual);
 555         void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
 556                             struct link_qual *qual, const u32 count);
 557
 558         /*
 559          * Data queue handlers.
 560          */
 561         void (*watchdog) (struct rt2x00_dev *rt2x00dev);
 562         void (*start_queue) (struct data_queue *queue);
 563         void (*kick_queue) (struct data_queue *queue);
 564         void (*stop_queue) (struct data_queue *queue);
 565         void (*flush_queue) (struct data_queue *queue);
 566
 567         /*
 568          * TX control handlers
 569          */
 570         void (*write_tx_desc) (struct queue_entry *entry,
 571                                struct txentry_desc *txdesc);
 572         void (*write_tx_data) (struct queue_entry *entry,
 573                                struct txentry_desc *txdesc);
 574         void (*write_beacon) (struct queue_entry *entry,
 575                               struct txentry_desc *txdesc);
 576         int (*get_tx_data_len) (struct queue_entry *entry);
 577
 578         /*
 579          * RX control handlers
 580          */
 581         void (*fill_rxdone) (struct queue_entry *entry,
 582                              struct rxdone_entry_desc *rxdesc);
 583
 584         /*
 585          * Configuration handlers.
 586          */
 587         int (*config_shared_key) (struct rt2x00_dev *rt2x00dev,
 588                                   struct rt2x00lib_crypto *crypto,
 589                                   struct ieee80211_key_conf *key);
 590         int (*config_pairwise_key) (struct rt2x00_dev *rt2x00dev,
 591                                     struct rt2x00lib_crypto *crypto,
 592                                     struct ieee80211_key_conf *key);
 593         void (*config_filter) (struct rt2x00_dev *rt2x00dev,
 594                                const unsigned int filter_flags);
 595         void (*config_intf) (struct rt2x00_dev *rt2x00dev,
 596                              struct rt2x00_intf *intf,
 597                              struct rt2x00intf_conf *conf,
 598                              const unsigned int flags);
 599 #define CONFIG_UPDATE_TYPE              ( 1 << 1 )
 600 #define CONFIG_UPDATE_MAC               ( 1 << 2 )
 601 #define CONFIG_UPDATE_BSSID             ( 1 << 3 )
 602
 603         void (*config_erp) (struct rt2x00_dev *rt2x00dev,
 604                             struct rt2x00lib_erp *erp,
 605                             u32 changed);
 606         void (*config_ant) (struct rt2x00_dev *rt2x00dev,
 607                             struct antenna_setup *ant);
 608         void (*config) (struct rt2x00_dev *rt2x00dev,
 609                         struct rt2x00lib_conf *libconf,
 610                         const unsigned int changed_flags);
 611 };
 612
 613 /*
 614  * rt2x00 driver callback operation structure.
 615  */
 616 struct rt2x00_ops {
 617         const char *name;
 618         const unsigned int max_sta_intf;
 619         const unsigned int max_ap_intf;
 620         const unsigned int eeprom_size;
 621         const unsigned int rf_size;
 622         const unsigned int tx_queues;
 623         const unsigned int extra_tx_headroom;
 624         const struct data_queue_desc *rx;
 625         const struct data_queue_desc *tx;
 626         const struct data_queue_desc *bcn;
 627         const struct data_queue_desc *atim;
 628         const struct rt2x00lib_ops *lib;
 629         const void *drv;
 630         const struct ieee80211_ops *hw;
 631 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 632         const struct rt2x00debug *debugfs;
 633 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 634 };
 635
 636 /*
 637  * rt2x00 device flags
 638  */
 639 enum rt2x00_flags {
 640         /*
 641          * Device state flags
 642          */
 643         DEVICE_STATE_PRESENT,
 644         DEVICE_STATE_REGISTERED_HW,
 645         DEVICE_STATE_INITIALIZED,
 646         DEVICE_STATE_STARTED,
 647         DEVICE_STATE_ENABLED_RADIO,
 648         DEVICE_STATE_SCANNING,
 649
 650         /*
 651          * Driver requirements
 652          */
 653         DRIVER_REQUIRE_FIRMWARE,
 654         DRIVER_REQUIRE_BEACON_GUARD,
 655         DRIVER_REQUIRE_ATIM_QUEUE,
 656         DRIVER_REQUIRE_DMA,
 657         DRIVER_REQUIRE_COPY_IV,
 658         DRIVER_REQUIRE_L2PAD,
 659         DRIVER_REQUIRE_TXSTATUS_FIFO,
 660         DRIVER_REQUIRE_TASKLET_CONTEXT,
 661
 662         /*
 663          * Driver features
 664          */
 665         CONFIG_SUPPORT_HW_BUTTON,
 666         CONFIG_SUPPORT_HW_CRYPTO,
 667         DRIVER_SUPPORT_CONTROL_FILTERS,
 668         DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL,
 669         DRIVER_SUPPORT_PRE_TBTT_INTERRUPT,
 670         DRIVER_SUPPORT_LINK_TUNING,
 671         DRIVER_SUPPORT_WATCHDOG,
 672
 673         /*
 674          * Driver configuration
 675          */
 676         CONFIG_FRAME_TYPE,
 677         CONFIG_RF_SEQUENCE,
 678         CONFIG_EXTERNAL_LNA_A,
 679         CONFIG_EXTERNAL_LNA_BG,
 680         CONFIG_DOUBLE_ANTENNA,
 681         CONFIG_CHANNEL_HT40,
 682 };
 683
 684 /*
 685  * rt2x00 device structure.
 686  */
 687 struct rt2x00_dev {
 688         /*
 689          * Device structure.
 690          * The structure stored in here depends on the
 691          * system bus (PCI or USB).
 692          * When accessing this variable, the rt2x00dev_{pci,usb}
 693          * macros should be used for correct typecasting.
 694          */
 695         struct device *dev;
 696
 697         /*
 698          * Callback functions.
 699          */
 700         const struct rt2x00_ops *ops;
 701
 702         /*
 703          * IEEE80211 control structure.
 704          */
 705         struct ieee80211_hw *hw;
 706         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 707         enum ieee80211_band curr_band;
 708         int curr_freq;
 709
 710         /*
 711          * If enabled, the debugfs interface structures
 712          * required for deregistration of debugfs.
 713          */
 714 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 715         struct rt2x00debug_intf *debugfs_intf;
 716 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 717
 718         /*
 719          * LED structure for changing the LED status
 720          * by mac8011 or the kernel.
 721          */
 722 #ifdef CONFIG_RT2X00_LIB_LEDS
 723         struct rt2x00_led led_radio;
 724         struct rt2x00_led led_assoc;
 725         struct rt2x00_led led_qual;
 726         u16 led_mcu_reg;
 727 #endif /* CONFIG_RT2X00_LIB_LEDS */
 728
 729         /*
 730          * Device flags.
 731          * In these flags the current status and some
 732          * of the device capabilities are stored.
 733          */
 734         unsigned long flags;
 735
 736         /*
 737          * Device information, Bus IRQ and name (PCI, SoC)
 738          */
 739         int irq;
 740         const char *name;
 741
 742         /*
 743          * Chipset identification.
 744          */
 745         struct rt2x00_chip chip;
 746
 747         /*
 748          * hw capability specifications.
 749          */
 750         struct hw_mode_spec spec;
 751
 752         /*
 753          * This is the default TX/RX antenna setup as indicated
 754          * by the device's EEPROM.
 755          */
 756         struct antenna_setup default_ant;
 757
 758         /*
 759          * Register pointers
 760          * csr.base: CSR base register address. (PCI)
 761          * csr.cache: CSR cache for usb_control_msg. (USB)
 762          */
 763         union csr {
 764                 void __iomem *base;
 765                 void *cache;
 766         } csr;
 767
 768         /*
 769          * Mutex to protect register accesses.
 770          * For PCI and USB devices it protects against concurrent indirect
 771          * register access (BBP, RF, MCU) since accessing those
 772          * registers require multiple calls to the CSR registers.
 773          * For USB devices it also protects the csr_cache since that
 774          * field is used for normal CSR access and it cannot support
 775          * multiple callers simultaneously.
 776          */
 777         struct mutex csr_mutex;
 778
 779         /*
 780          * Current packet filter configuration for the device.
 781          * This contains all currently active FIF_* flags send
 782          * to us by mac80211 during configure_filter().
 783          */
 784         unsigned int packet_filter;
 785
 786         /*
 787          * Interface details:
 788          *  - Open ap interface count.
 789          *  - Open sta interface count.
 790          *  - Association count.
 791          */
 792         unsigned int intf_ap_count;
 793         unsigned int intf_sta_count;
 794         unsigned int intf_associated;
 795
 796         /*
 797          * Link quality
 798          */
 799         struct link link;
 800
 801         /*
 802          * EEPROM data.
 803          */
 804         __le16 *eeprom;
 805
 806         /*
 807          * Active RF register values.
 808          * These are stored here so we don't need
 809          * to read the rf registers and can directly
 810          * use this value instead.
 811          * This field should be accessed by using
 812          * rt2x00_rf_read() and rt2x00_rf_write().
 813          */
 814         u32 *rf;
 815
 816         /*
 817          * LNA gain
 818          */
 819         short lna_gain;
 820
 821         /*
 822          * Current TX power value.
 823          */
 824         u16 tx_power;
 825
 826         /*
 827          * Current retry values.
 828          */
 829         u8 short_retry;
 830         u8 long_retry;
 831
 832         /*
 833          * Rssi <-> Dbm offset
 834          */
 835         u8 rssi_offset;
 836
 837         /*
 838          * Frequency offset (for rt61pci & rt73usb).
 839          */
 840         u8 freq_offset;
 841
 842         /*
 843          * Calibration information (for rt2800usb & rt2800pci).
 844          * [0] -> BW20
 845          * [1] -> BW40
 846          */
 847         u8 calibration[2];
 848
 849         /*
 850          * Beacon interval.
 851          */
 852         u16 beacon_int;
 853
 854         /*
 855          * Low level statistics which will have
 856          * to be kept up to date while device is running.
 857          */
 858         struct ieee80211_low_level_stats low_level_stats;
 859
 860         /*
 861          * Scheduled work.
 862          * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
 863          * which means it cannot be placed on the hw->workqueue
 864          * due to RTNL locking requirements.
 865          */
 866         struct work_struct intf_work;
 867
 868         /**
 869          * Scheduled work for TX/RX done handling (USB devices)
 870          */
 871         struct work_struct rxdone_work;
 872         struct work_struct txdone_work;
 873
 874         /*
 875          * Data queue arrays for RX, TX and Beacon.
 876          * The Beacon array also contains the Atim queue
 877          * if that is supported by the device.
 878          */
 879         unsigned int data_queues;
 880         struct data_queue *rx;
 881         struct data_queue *tx;
 882         struct data_queue *bcn;
 883
 884         /*
 885          * Firmware image.
 886          */
 887         const struct firmware *fw;
 888
 889         /*
 890          * Interrupt values, stored between interrupt service routine
 891          * and interrupt thread routine.
 892          */
 893         u32 irqvalue[2];
 894
 895         /*
 896          * FIFO for storing tx status reports between isr and tasklet.
 897          */
 898         DECLARE_KFIFO_PTR(txstatus_fifo, u32);
 899
 900         /*
 901          * Tasklet for processing tx status reports (rt2800pci).
 902          */
 903         struct tasklet_struct txstatus_tasklet;
 904 };
 905
 906 /*
 907  * Register defines.
 908  * Some registers require multiple attempts before success,
 909  * in those cases REGISTER_BUSY_COUNT attempts should be
 910  * taken with a REGISTER_BUSY_DELAY interval.
 911  */
 912 #define REGISTER_BUSY_COUNT     100
 913 #define REGISTER_BUSY_DELAY     100
 914
 915 /*
 916  * Generic RF access.
 917  * The RF is being accessed by word index.
 918  */
 919 static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
 920                                   const unsigned int word, u32 *data)
 921 {
 922         BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
 923         *data = rt2x00dev->rf[word - 1];
 924 }
 925
 926 static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
 927                                    const unsigned int word, u32 data)
 928 {
 929         BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
 930         rt2x00dev->rf[word - 1] = data;
 931 }
 932
 933 /*
 934  *  Generic EEPROM access.
 935  * The EEPROM is being accessed by word index.
 936  */
 937 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
 938                                        const unsigned int word)
 939 {
 940         return (void *)&rt2x00dev->eeprom[word];
 941 }
 942
 943 static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
 944                                       const unsigned int word, u16 *data)
 945 {
 946         *data = le16_to_cpu(rt2x00dev->eeprom[word]);
 947 }
 948
 949 static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
 950                                        const unsigned int word, u16 data)
 951 {
 952         rt2x00dev->eeprom[word] = cpu_to_le16(data);
 953 }
 954
 955 /*
 956  * Chipset handlers
 957  */
 958 static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
 959                                    const u16 rt, const u16 rf, const u16 rev)
 960 {
 961         rt2x00dev->chip.rt = rt;
 962         rt2x00dev->chip.rf = rf;
 963         rt2x00dev->chip.rev = rev;
 964
 965         INFO(rt2x00dev,
 966              "Chipset detected - rt: %04x, rf: %04x, rev: %04x.\n",
 967              rt2x00dev->chip.rt, rt2x00dev->chip.rf, rt2x00dev->chip.rev);
 968 }
 969
 970 static inline bool rt2x00_rt(struct rt2x00_dev *rt2x00dev, const u16 rt)
 971 {
 972         return (rt2x00dev->chip.rt == rt);
 973 }
 974
 975 static inline bool rt2x00_rf(struct rt2x00_dev *rt2x00dev, const u16 rf)
 976 {
 977         return (rt2x00dev->chip.rf == rf);
 978 }
 979
 980 static inline u16 rt2x00_rev(struct rt2x00_dev *rt2x00dev)
 981 {
 982         return rt2x00dev->chip.rev;
 983 }
 984
 985 static inline bool rt2x00_rt_rev(struct rt2x00_dev *rt2x00dev,
 986                                  const u16 rt, const u16 rev)
 987 {
 988         return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) == rev);
 989 }
 990
 991 static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev *rt2x00dev,
 992                                     const u16 rt, const u16 rev)
 993 {
 994         return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) < rev);
 995 }
 996
 997 static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev *rt2x00dev,
 998                                      const u16 rt, const u16 rev)
 999 {
1000         return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) >= rev);
1001 }
1002
1003 static inline void rt2x00_set_chip_intf(struct rt2x00_dev *rt2x00dev,
1004                                         enum rt2x00_chip_intf intf)
1005 {
1006         rt2x00dev->chip.intf = intf;
1007 }
1008
1009 static inline bool rt2x00_intf(struct rt2x00_dev *rt2x00dev,
1010                                enum rt2x00_chip_intf intf)
1011 {
1012         return (rt2x00dev->chip.intf == intf);
1013 }
1014
1015 static inline bool rt2x00_is_pci(struct rt2x00_dev *rt2x00dev)
1016 {
1017         return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI) ||
1018                rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1019 }
1020
1021 static inline bool rt2x00_is_pcie(struct rt2x00_dev *rt2x00dev)
1022 {
1023         return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1024 }
1025
1026 static inline bool rt2x00_is_usb(struct rt2x00_dev *rt2x00dev)
1027 {
1028         return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_USB);
1029 }
1030
1031 static inline bool rt2x00_is_soc(struct rt2x00_dev *rt2x00dev)
1032 {
1033         return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
1034 }
1035
1036 /**
1037  * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
1038  * @entry: Pointer to &struct queue_entry
1039  */
1040 void rt2x00queue_map_txskb(struct queue_entry *entry);
1041
1042 /**
1043  * rt2x00queue_unmap_skb - Unmap a skb from DMA.
1044  * @entry: Pointer to &struct queue_entry
1045  */
1046 void rt2x00queue_unmap_skb(struct queue_entry *entry);
1047
1048 /**
1049  * rt2x00queue_get_queue - Convert queue index to queue pointer
1050  * @rt2x00dev: Pointer to &struct rt2x00_dev.
1051  * @queue: rt2x00 queue index (see &enum data_queue_qid).
1052  */
1053 struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
1054                                          const enum data_queue_qid queue);
1055
1056 /**
1057  * rt2x00queue_get_entry - Get queue entry where the given index points to.
1058  * @queue: Pointer to &struct data_queue from where we obtain the entry.
1059  * @index: Index identifier for obtaining the correct index.
1060  */
1061 struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
1062                                           enum queue_index index);
1063
1064 /**
1065  * rt2x00queue_pause_queue - Pause a data queue
1066  * @queue: Pointer to &struct data_queue.
1067  *
1068  * This function will pause the data queue locally, preventing
1069  * new frames to be added to the queue (while the hardware is
1070  * still allowed to run).
1071  */
1072 void rt2x00queue_pause_queue(struct data_queue *queue);
1073
1074 /**
1075  * rt2x00queue_unpause_queue - unpause a data queue
1076  * @queue: Pointer to &struct data_queue.
1077  *
1078  * This function will unpause the data queue locally, allowing
1079  * new frames to be added to the queue again.
1080  */
1081 void rt2x00queue_unpause_queue(struct data_queue *queue);
1082
1083 /**
1084  * rt2x00queue_start_queue - Start a data queue
1085  * @queue: Pointer to &struct data_queue.
1086  *
1087  * This function will start handling all pending frames in the queue.
1088  */
1089 void rt2x00queue_start_queue(struct data_queue *queue);
1090
1091 /**
1092  * rt2x00queue_stop_queue - Halt a data queue
1093  * @queue: Pointer to &struct data_queue.
1094  *
1095  * This function will stop all pending frames in the queue.
1096  */
1097 void rt2x00queue_stop_queue(struct data_queue *queue);
1098
1099 /**
1100  * rt2x00queue_flush_queue - Flush a data queue
1101  * @queue: Pointer to &struct data_queue.
1102  * @drop: True to drop all pending frames.
1103  *
1104  * This function will flush the queue. After this call
1105  * the queue is guarenteed to be empty.
1106  */
1107 void rt2x00queue_flush_queue(struct data_queue *queue, bool drop);
1108
1109 /**
1110  * rt2x00queue_start_queues - Start all data queues
1111  * @rt2x00dev: Pointer to &struct rt2x00_dev.
1112  *
1113  * This function will loop through all available queues to start them
1114  */
1115 void rt2x00queue_start_queues(struct rt2x00_dev *rt2x00dev);
1116
1117 /**
1118  * rt2x00queue_stop_queues - Halt all data queues
1119  * @rt2x00dev: Pointer to &struct rt2x00_dev.
1120  *
1121  * This function will loop through all available queues to stop
1122  * any pending frames.
1123  */
1124 void rt2x00queue_stop_queues(struct rt2x00_dev *rt2x00dev);
1125
1126 /**
1127  * rt2x00queue_flush_queues - Flush all data queues
1128  * @rt2x00dev: Pointer to &struct rt2x00_dev.
1129  * @drop: True to drop all pending frames.
1130  *
1131  * This function will loop through all available queues to flush
1132  * any pending frames.
1133  */
1134 void rt2x00queue_flush_queues(struct rt2x00_dev *rt2x00dev, bool drop);
1135
1136 /*
1137  * Debugfs handlers.
1138  */
1139 /**
1140  * rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
1141  * @rt2x00dev: Pointer to &struct rt2x00_dev.
1142  * @type: The type of frame that is being dumped.
1143  * @skb: The skb containing the frame to be dumped.
1144  */
1145 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1146 void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1147                             enum rt2x00_dump_type type, struct sk_buff *skb);
1148 #else
1149 static inline void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1150                                           enum rt2x00_dump_type type,
1151                                           struct sk_buff *skb)
1152 {
1153 }
1154 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1155
1156 /*
1157  * Interrupt context handlers.
1158  */
1159 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
1160 void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev);
1161 void rt2x00lib_dmastart(struct queue_entry *entry);
1162 void rt2x00lib_dmadone(struct queue_entry *entry);
1163 void rt2x00lib_txdone(struct queue_entry *entry,
1164                       struct txdone_entry_desc *txdesc);
1165 void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status);
1166 void rt2x00lib_rxdone(struct queue_entry *entry);
1167
1168 /*
1169  * mac80211 handlers.
1170  */
1171 int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
1172 int rt2x00mac_start(struct ieee80211_hw *hw);
1173 void rt2x00mac_stop(struct ieee80211_hw *hw);
1174 int rt2x00mac_add_interface(struct ieee80211_hw *hw,
1175                             struct ieee80211_vif *vif);
1176 void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
1177                                 struct ieee80211_vif *vif);
1178 int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed);
1179 void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
1180                                 unsigned int changed_flags,
1181                                 unsigned int *total_flags,
1182                                 u64 multicast);
1183 int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
1184                       bool set);
1185 #ifdef CONFIG_RT2X00_LIB_CRYPTO
1186 int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1187                       struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1188                       struct ieee80211_key_conf *key);
1189 #else
1190 #define rt2x00mac_set_key       NULL
1191 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
1192 void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw);
1193 void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw);
1194 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
1195                         struct ieee80211_low_level_stats *stats);
1196 void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
1197                                 struct ieee80211_vif *vif,
1198                                 struct ieee80211_bss_conf *bss_conf,
1199                                 u32 changes);
1200 int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1201                       const struct ieee80211_tx_queue_params *params);
1202 void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw);
1203 void rt2x00mac_flush(struct ieee80211_hw *hw, bool drop);
1204
1205 /*
1206  * Driver allocation handlers.
1207  */
1208 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
1209 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
1210 #ifdef CONFIG_PM
1211 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
1212 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
1213 #endif /* CONFIG_PM */
1214
1215 #endif /* RT2X00_H */