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>
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.
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.
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.
25 Abstract: rt2x00 global information.
31 #include <linux/bitops.h>
32 #include <linux/interrupt.h>
33 #include <linux/skbuff.h>
34 #include <linux/workqueue.h>
35 #include <linux/firmware.h>
36 #include <linux/leds.h>
37 #include <linux/mutex.h>
38 #include <linux/etherdevice.h>
39 #include <linux/input-polldev.h>
40 #include <linux/kfifo.h>
41 #include <linux/hrtimer.h>
43 #include <net/mac80211.h>
45 #include "rt2x00debug.h"
46 #include "rt2x00dump.h"
47 #include "rt2x00leds.h"
48 #include "rt2x00reg.h"
49 #include "rt2x00queue.h"
54 #define DRV_VERSION "2.3.0"
55 #define DRV_PROJECT "http://rt2x00.serialmonkey.com"
59 * Debug output has to be enabled during compile time.
61 #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \
62 printk(__kernlvl "%s -> %s: %s - " __msg, \
63 wiphy_name((__dev)->hw->wiphy), __func__, __lvl, ##__args)
65 #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \
66 printk(__kernlvl "%s -> %s: %s - " __msg, \
67 KBUILD_MODNAME, __func__, __lvl, ##__args)
69 #ifdef CONFIG_RT2X00_DEBUG
70 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
71 DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args)
73 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
75 #endif /* CONFIG_RT2X00_DEBUG */
78 * Various debug levels.
79 * The debug levels PANIC and ERROR both indicate serious problems,
80 * for this reason they should never be ignored.
81 * The special ERROR_PROBE message is for messages that are generated
82 * when the rt2x00_dev is not yet initialized.
84 #define PANIC(__dev, __msg, __args...) \
85 DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
86 #define ERROR(__dev, __msg, __args...) \
87 DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
88 #define ERROR_PROBE(__msg, __args...) \
89 DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
90 #define WARNING(__dev, __msg, __args...) \
91 DEBUG_PRINTK_MSG(__dev, KERN_WARNING, "Warning", __msg, ##__args)
92 #define INFO(__dev, __msg, __args...) \
93 DEBUG_PRINTK_MSG(__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)
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.
106 #define GET_DURATION(__size, __rate) (((__size) * 8 * 10) / (__rate))
107 #define GET_DURATION_RES(__size, __rate)(((__size) * 8 * 10) % (__rate))
110 * Determine the number of L2 padding bytes required between the header and
113 #define L2PAD_SIZE(__hdrlen) (-(__hdrlen) & 3)
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.
121 #define ALIGN_SIZE(__skb, __header) \
122 ( ((unsigned long)((__skb)->data + (__header))) & 3 )
125 * Constants for extra TX headroom for alignment purposes.
127 #define RT2X00_ALIGN_SIZE 4 /* Only whole frame needs alignment */
128 #define RT2X00_L2PAD_SIZE 8 /* Both header & payload need alignment */
131 * Standard timing and size defines.
132 * These values should follow the ieee80211 specifications.
135 #define IEEE80211_HEADER 24
139 #define SHORT_PREAMBLE 72
141 #define SHORT_SLOT_TIME 9
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) )
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.
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,
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.
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 RT3290 0x3290
189 #define RT3352 0x3352 /* WSOC */
190 #define RT3390 0x3390
191 #define RT3572 0x3572
192 #define RT3593 0x3593
193 #define RT3883 0x3883 /* WSOC */
194 #define RT5390 0x5390 /* 2.4GHz */
195 #define RT5392 0x5392 /* 2.4GHz */
200 enum rt2x00_chip_intf intf;
204 * RF register values that belong to a particular channel.
215 * Channel information structure
217 struct channel_info {
219 #define GEOGRAPHY_ALLOWED 0x00000001
222 short default_power1;
223 short default_power2;
227 * Antenna setup values.
229 struct antenna_setup {
237 * Quality statistics about the currently active link.
241 * Statistics required for Link tuning by driver
242 * The rssi value is provided by rt2x00lib during the
243 * link_tuner() callback function.
244 * The false_cca field is filled during the link_stats()
245 * callback function and could be used during the
246 * link_tuner() callback function.
253 * Hardware driver will tune the VGC level during each call
254 * to the link_tuner() callback function. This vgc_level is
255 * is determined based on the link quality statistics like
256 * average RSSI and the false CCA count.
258 * In some cases the drivers need to differentiate between
259 * the currently "desired" VGC level and the level configured
260 * in the hardware. The latter is important to reduce the
261 * number of BBP register reads to reduce register access
262 * overhead. For this reason we store both values here.
268 * Statistics required for Signal quality calculation.
269 * These fields might be changed during the link_stats()
279 * Antenna settings about the currently active link.
286 #define ANTENNA_RX_DIVERSITY 0x00000001
287 #define ANTENNA_TX_DIVERSITY 0x00000002
288 #define ANTENNA_MODE_SAMPLE 0x00000004
291 * Currently active TX/RX antenna setup.
292 * When software diversity is used, this will indicate
293 * which antenna is actually used at this time.
295 struct antenna_setup active;
298 * RSSI history information for the antenna.
299 * Used to determine when to switch antenna
300 * when using software diversity.
305 * Current RSSI average of the currently active antenna.
306 * Similar to the avg_rssi in the link_qual structure
307 * this value is updated by using the walking average.
309 struct avg_val rssi_ant;
313 * To optimize the quality of the link we need to store
314 * the quality of received frames and periodically
320 * The number of times the link has been tuned
321 * since the radio has been switched on.
326 * Quality measurement values.
328 struct link_qual qual;
331 * TX/RX antenna setup.
336 * Currently active average RSSI value
338 struct avg_val avg_rssi;
341 * Work structure for scheduling periodic link tuning.
343 struct delayed_work work;
346 * Work structure for scheduling periodic watchdog monitoring.
347 * This work must be scheduled on the kernel workqueue, while
348 * all other work structures must be queued on the mac80211
349 * workqueue. This guarantees that the watchdog can schedule
350 * other work structures and wait for their completion in order
351 * to bring the device/driver back into the desired state.
353 struct delayed_work watchdog_work;
356 * Work structure for scheduling periodic AGC adjustments.
358 struct delayed_work agc_work;
361 * Work structure for scheduling periodic VCO calibration.
363 struct delayed_work vco_work;
366 enum rt2x00_delayed_flags {
367 DELAYED_UPDATE_BEACON,
371 * Interface structure
372 * Per interface configuration details, this structure
373 * is allocated as the private data for ieee80211_vif.
377 * beacon->skb must be protected with the mutex.
379 struct mutex beacon_skb_mutex;
382 * Entry in the beacon queue which belongs to
383 * this interface. Each interface has its own
384 * dedicated beacon entry.
386 struct queue_entry *beacon;
390 * Actions that needed rescheduling.
392 unsigned long delayed_flags;
395 * Software sequence counter, this is only required
396 * for hardware which doesn't support hardware
402 static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
404 return (struct rt2x00_intf *)vif->drv_priv;
408 * struct hw_mode_spec: Hardware specifications structure
410 * Details about the supported modes, rates and channels
411 * of a particular chipset. This is used by rt2x00lib
412 * to build the ieee80211_hw_mode array for mac80211.
414 * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
415 * @supported_rates: Rate types which are supported (CCK, OFDM).
416 * @num_channels: Number of supported channels. This is used as array size
417 * for @tx_power_a, @tx_power_bg and @channels.
418 * @channels: Device/chipset specific channel values (See &struct rf_channel).
419 * @channels_info: Additional information for channels (See &struct channel_info).
420 * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
422 struct hw_mode_spec {
423 unsigned int supported_bands;
424 #define SUPPORT_BAND_2GHZ 0x00000001
425 #define SUPPORT_BAND_5GHZ 0x00000002
427 unsigned int supported_rates;
428 #define SUPPORT_RATE_CCK 0x00000001
429 #define SUPPORT_RATE_OFDM 0x00000002
431 unsigned int num_channels;
432 const struct rf_channel *channels;
433 const struct channel_info *channels_info;
435 struct ieee80211_sta_ht_cap ht;
439 * Configuration structure wrapper around the
440 * mac80211 configuration structure.
441 * When mac80211 configures the driver, rt2x00lib
442 * can precalculate values which are equal for all
443 * rt2x00 drivers. Those values can be stored in here.
445 struct rt2x00lib_conf {
446 struct ieee80211_conf *conf;
448 struct rf_channel rf;
449 struct channel_info channel;
453 * Configuration structure for erp settings.
455 struct rt2x00lib_erp {
473 * Configuration structure for hardware encryption.
475 struct rt2x00lib_crypto {
478 enum set_key_cmd cmd;
491 * Configuration structure wrapper around the
492 * rt2x00 interface configuration handler.
494 struct rt2x00intf_conf {
498 enum nl80211_iftype type;
501 * TSF sync value, this is dependent on the operation type.
506 * The MAC and BSSID addresses are simple array of bytes,
507 * these arrays are little endian, so when sending the addresses
508 * to the drivers, copy the it into a endian-signed variable.
510 * Note that all devices (except rt2500usb) have 32 bits
511 * register word sizes. This means that whatever variable we
512 * pass _must_ be a multiple of 32 bits. Otherwise the device
513 * might not accept what we are sending to it.
514 * This will also make it easier for the driver to write
515 * the data to the device.
522 * Private structure for storing STA details
523 * wcid: Wireless Client ID
529 static inline struct rt2x00_sta* sta_to_rt2x00_sta(struct ieee80211_sta *sta)
531 return (struct rt2x00_sta *)sta->drv_priv;
535 * rt2x00lib callback functions.
537 struct rt2x00lib_ops {
539 * Interrupt handlers.
541 irq_handler_t irq_handler;
544 * TX status tasklet handler.
546 void (*txstatus_tasklet) (unsigned long data);
547 void (*pretbtt_tasklet) (unsigned long data);
548 void (*tbtt_tasklet) (unsigned long data);
549 void (*rxdone_tasklet) (unsigned long data);
550 void (*autowake_tasklet) (unsigned long data);
553 * Device init handlers.
555 int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
556 char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
557 int (*check_firmware) (struct rt2x00_dev *rt2x00dev,
558 const u8 *data, const size_t len);
559 int (*load_firmware) (struct rt2x00_dev *rt2x00dev,
560 const u8 *data, const size_t len);
563 * Device initialization/deinitialization handlers.
565 int (*initialize) (struct rt2x00_dev *rt2x00dev);
566 void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
569 * queue initialization handlers
571 bool (*get_entry_state) (struct queue_entry *entry);
572 void (*clear_entry) (struct queue_entry *entry);
575 * Radio control handlers.
577 int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
578 enum dev_state state);
579 int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
580 void (*link_stats) (struct rt2x00_dev *rt2x00dev,
581 struct link_qual *qual);
582 void (*reset_tuner) (struct rt2x00_dev *rt2x00dev,
583 struct link_qual *qual);
584 void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
585 struct link_qual *qual, const u32 count);
586 void (*gain_calibration) (struct rt2x00_dev *rt2x00dev);
587 void (*vco_calibration) (struct rt2x00_dev *rt2x00dev);
590 * Data queue handlers.
592 void (*watchdog) (struct rt2x00_dev *rt2x00dev);
593 void (*start_queue) (struct data_queue *queue);
594 void (*kick_queue) (struct data_queue *queue);
595 void (*stop_queue) (struct data_queue *queue);
596 void (*flush_queue) (struct data_queue *queue, bool drop);
597 void (*tx_dma_done) (struct queue_entry *entry);
600 * TX control handlers
602 void (*write_tx_desc) (struct queue_entry *entry,
603 struct txentry_desc *txdesc);
604 void (*write_tx_data) (struct queue_entry *entry,
605 struct txentry_desc *txdesc);
606 void (*write_beacon) (struct queue_entry *entry,
607 struct txentry_desc *txdesc);
608 void (*clear_beacon) (struct queue_entry *entry);
609 int (*get_tx_data_len) (struct queue_entry *entry);
612 * RX control handlers
614 void (*fill_rxdone) (struct queue_entry *entry,
615 struct rxdone_entry_desc *rxdesc);
618 * Configuration handlers.
620 int (*config_shared_key) (struct rt2x00_dev *rt2x00dev,
621 struct rt2x00lib_crypto *crypto,
622 struct ieee80211_key_conf *key);
623 int (*config_pairwise_key) (struct rt2x00_dev *rt2x00dev,
624 struct rt2x00lib_crypto *crypto,
625 struct ieee80211_key_conf *key);
626 void (*config_filter) (struct rt2x00_dev *rt2x00dev,
627 const unsigned int filter_flags);
628 void (*config_intf) (struct rt2x00_dev *rt2x00dev,
629 struct rt2x00_intf *intf,
630 struct rt2x00intf_conf *conf,
631 const unsigned int flags);
632 #define CONFIG_UPDATE_TYPE ( 1 << 1 )
633 #define CONFIG_UPDATE_MAC ( 1 << 2 )
634 #define CONFIG_UPDATE_BSSID ( 1 << 3 )
636 void (*config_erp) (struct rt2x00_dev *rt2x00dev,
637 struct rt2x00lib_erp *erp,
639 void (*config_ant) (struct rt2x00_dev *rt2x00dev,
640 struct antenna_setup *ant);
641 void (*config) (struct rt2x00_dev *rt2x00dev,
642 struct rt2x00lib_conf *libconf,
643 const unsigned int changed_flags);
644 int (*sta_add) (struct rt2x00_dev *rt2x00dev,
645 struct ieee80211_vif *vif,
646 struct ieee80211_sta *sta);
647 int (*sta_remove) (struct rt2x00_dev *rt2x00dev,
652 * rt2x00 driver callback operation structure.
656 const unsigned int drv_data_size;
657 const unsigned int max_ap_intf;
658 const unsigned int eeprom_size;
659 const unsigned int rf_size;
660 const unsigned int tx_queues;
661 const unsigned int extra_tx_headroom;
662 const struct data_queue_desc *rx;
663 const struct data_queue_desc *tx;
664 const struct data_queue_desc *bcn;
665 const struct data_queue_desc *atim;
666 const struct rt2x00lib_ops *lib;
668 const struct ieee80211_ops *hw;
669 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
670 const struct rt2x00debug *debugfs;
671 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
677 enum rt2x00_state_flags {
681 DEVICE_STATE_PRESENT,
682 DEVICE_STATE_REGISTERED_HW,
683 DEVICE_STATE_INITIALIZED,
684 DEVICE_STATE_STARTED,
685 DEVICE_STATE_ENABLED_RADIO,
686 DEVICE_STATE_SCANNING,
689 * Driver configuration
697 * Mark we currently are sequentially reading TX_STA_FIFO register
698 * FIXME: this is for only rt2800usb, should go to private data
704 * rt2x00 capability flags
706 enum rt2x00_capability_flags {
711 REQUIRE_BEACON_GUARD,
716 REQUIRE_TXSTATUS_FIFO,
717 REQUIRE_TASKLET_CONTEXT,
725 CAPABILITY_HW_BUTTON,
726 CAPABILITY_HW_CRYPTO,
727 CAPABILITY_POWER_LIMIT,
728 CAPABILITY_CONTROL_FILTERS,
729 CAPABILITY_CONTROL_FILTER_PSPOLL,
730 CAPABILITY_PRE_TBTT_INTERRUPT,
731 CAPABILITY_LINK_TUNING,
732 CAPABILITY_FRAME_TYPE,
733 CAPABILITY_RF_SEQUENCE,
734 CAPABILITY_EXTERNAL_LNA_A,
735 CAPABILITY_EXTERNAL_LNA_BG,
736 CAPABILITY_DOUBLE_ANTENNA,
737 CAPABILITY_BT_COEXIST,
738 CAPABILITY_VCO_RECALIBRATION,
742 * Interface combinations
750 * rt2x00 device structure.
755 * The structure stored in here depends on the
756 * system bus (PCI or USB).
757 * When accessing this variable, the rt2x00dev_{pci,usb}
758 * macros should be used for correct typecasting.
763 * Callback functions.
765 const struct rt2x00_ops *ops;
773 * IEEE80211 control structure.
775 struct ieee80211_hw *hw;
776 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
777 enum ieee80211_band curr_band;
781 * If enabled, the debugfs interface structures
782 * required for deregistration of debugfs.
784 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
785 struct rt2x00debug_intf *debugfs_intf;
786 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
789 * LED structure for changing the LED status
790 * by mac8011 or the kernel.
792 #ifdef CONFIG_RT2X00_LIB_LEDS
793 struct rt2x00_led led_radio;
794 struct rt2x00_led led_assoc;
795 struct rt2x00_led led_qual;
797 #endif /* CONFIG_RT2X00_LIB_LEDS */
800 * Device state flags.
801 * In these flags the current status is stored.
802 * Access to these flags should occur atomically.
807 * Device capabiltiy flags.
808 * In these flags the device/driver capabilities are stored.
809 * Access to these flags should occur non-atomically.
811 unsigned long cap_flags;
814 * Device information, Bus IRQ and name (PCI, SoC)
820 * Chipset identification.
822 struct rt2x00_chip chip;
825 * hw capability specifications.
827 struct hw_mode_spec spec;
830 * This is the default TX/RX antenna setup as indicated
831 * by the device's EEPROM.
833 struct antenna_setup default_ant;
837 * csr.base: CSR base register address. (PCI)
838 * csr.cache: CSR cache for usb_control_msg. (USB)
846 * Mutex to protect register accesses.
847 * For PCI and USB devices it protects against concurrent indirect
848 * register access (BBP, RF, MCU) since accessing those
849 * registers require multiple calls to the CSR registers.
850 * For USB devices it also protects the csr_cache since that
851 * field is used for normal CSR access and it cannot support
852 * multiple callers simultaneously.
854 struct mutex csr_mutex;
857 * Current packet filter configuration for the device.
858 * This contains all currently active FIF_* flags send
859 * to us by mac80211 during configure_filter().
861 unsigned int packet_filter;
865 * - Open ap interface count.
866 * - Open sta interface count.
867 * - Association count.
868 * - Beaconing enabled count.
870 unsigned int intf_ap_count;
871 unsigned int intf_sta_count;
872 unsigned int intf_associated;
873 unsigned int intf_beaconing;
876 * Interface combinations
878 struct ieee80211_iface_limit if_limits_ap;
879 struct ieee80211_iface_combination if_combinations[NUM_IF_COMB];
892 * Active RF register values.
893 * These are stored here so we don't need
894 * to read the rf registers and can directly
895 * use this value instead.
896 * This field should be accessed by using
897 * rt2x00_rf_read() and rt2x00_rf_write().
907 * Current TX power value.
912 * Current retry values.
918 * Rssi <-> Dbm offset
938 * Timestamp of last received beacon
940 unsigned long last_beacon;
943 * Low level statistics which will have
944 * to be kept up to date while device is running.
946 struct ieee80211_low_level_stats low_level_stats;
949 * Work queue for all work which should not be placed
950 * on the mac80211 workqueue (because of dependencies
951 * between various work structures).
953 struct workqueue_struct *workqueue;
957 * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
958 * which means it cannot be placed on the hw->workqueue
959 * due to RTNL locking requirements.
961 struct work_struct intf_work;
964 * Scheduled work for TX/RX done handling (USB devices)
966 struct work_struct rxdone_work;
967 struct work_struct txdone_work;
972 struct delayed_work autowakeup_work;
973 struct work_struct sleep_work;
976 * Data queue arrays for RX, TX, Beacon and ATIM.
978 unsigned int data_queues;
979 struct data_queue *rx;
980 struct data_queue *tx;
981 struct data_queue *bcn;
982 struct data_queue *atim;
987 const struct firmware *fw;
990 * FIFO for storing tx status reports between isr and tasklet.
992 DECLARE_KFIFO_PTR(txstatus_fifo, u32);
995 * Timer to ensure tx status reports are read (rt2800usb).
997 struct hrtimer txstatus_timer;
1000 * Tasklet for processing tx status reports (rt2800pci).
1002 struct tasklet_struct txstatus_tasklet;
1003 struct tasklet_struct pretbtt_tasklet;
1004 struct tasklet_struct tbtt_tasklet;
1005 struct tasklet_struct rxdone_tasklet;
1006 struct tasklet_struct autowake_tasklet;
1009 * Used for VCO periodic calibration.
1014 * Protect the interrupt mask register.
1016 spinlock_t irqmask_lock;
1019 * List of BlockAckReq TX entries that need driver BlockAck processing.
1021 struct list_head bar_list;
1022 spinlock_t bar_list_lock;
1025 struct rt2x00_bar_list_entry {
1026 struct list_head list;
1027 struct rcu_head head;
1029 struct queue_entry *entry;
1032 /* Relevant parts of the IEEE80211 BAR header */
1036 __le16 start_seq_num;
1041 * Some registers require multiple attempts before success,
1042 * in those cases REGISTER_BUSY_COUNT attempts should be
1043 * taken with a REGISTER_BUSY_DELAY interval.
1045 #define REGISTER_BUSY_COUNT 100
1046 #define REGISTER_BUSY_DELAY 100
1049 * Generic RF access.
1050 * The RF is being accessed by word index.
1052 static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
1053 const unsigned int word, u32 *data)
1055 BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
1056 *data = rt2x00dev->rf[word - 1];
1059 static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
1060 const unsigned int word, u32 data)
1062 BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
1063 rt2x00dev->rf[word - 1] = data;
1067 * Generic EEPROM access.
1068 * The EEPROM is being accessed by word index.
1070 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
1071 const unsigned int word)
1073 return (void *)&rt2x00dev->eeprom[word];
1076 static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
1077 const unsigned int word, u16 *data)
1079 *data = le16_to_cpu(rt2x00dev->eeprom[word]);
1082 static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
1083 const unsigned int word, u16 data)
1085 rt2x00dev->eeprom[word] = cpu_to_le16(data);
1091 static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
1092 const u16 rt, const u16 rf, const u16 rev)
1094 rt2x00dev->chip.rt = rt;
1095 rt2x00dev->chip.rf = rf;
1096 rt2x00dev->chip.rev = rev;
1099 "Chipset detected - rt: %04x, rf: %04x, rev: %04x.\n",
1100 rt2x00dev->chip.rt, rt2x00dev->chip.rf, rt2x00dev->chip.rev);
1103 static inline bool rt2x00_rt(struct rt2x00_dev *rt2x00dev, const u16 rt)
1105 return (rt2x00dev->chip.rt == rt);
1108 static inline bool rt2x00_rf(struct rt2x00_dev *rt2x00dev, const u16 rf)
1110 return (rt2x00dev->chip.rf == rf);
1113 static inline u16 rt2x00_rev(struct rt2x00_dev *rt2x00dev)
1115 return rt2x00dev->chip.rev;
1118 static inline bool rt2x00_rt_rev(struct rt2x00_dev *rt2x00dev,
1119 const u16 rt, const u16 rev)
1121 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) == rev);
1124 static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev *rt2x00dev,
1125 const u16 rt, const u16 rev)
1127 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) < rev);
1130 static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev *rt2x00dev,
1131 const u16 rt, const u16 rev)
1133 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) >= rev);
1136 static inline void rt2x00_set_chip_intf(struct rt2x00_dev *rt2x00dev,
1137 enum rt2x00_chip_intf intf)
1139 rt2x00dev->chip.intf = intf;
1142 static inline bool rt2x00_intf(struct rt2x00_dev *rt2x00dev,
1143 enum rt2x00_chip_intf intf)
1145 return (rt2x00dev->chip.intf == intf);
1148 static inline bool rt2x00_is_pci(struct rt2x00_dev *rt2x00dev)
1150 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI) ||
1151 rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1154 static inline bool rt2x00_is_pcie(struct rt2x00_dev *rt2x00dev)
1156 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1159 static inline bool rt2x00_is_usb(struct rt2x00_dev *rt2x00dev)
1161 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_USB);
1164 static inline bool rt2x00_is_soc(struct rt2x00_dev *rt2x00dev)
1166 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
1170 * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
1171 * @entry: Pointer to &struct queue_entry
1173 * Returns -ENOMEM if mapping fail, 0 otherwise.
1175 int rt2x00queue_map_txskb(struct queue_entry *entry);
1178 * rt2x00queue_unmap_skb - Unmap a skb from DMA.
1179 * @entry: Pointer to &struct queue_entry
1181 void rt2x00queue_unmap_skb(struct queue_entry *entry);
1184 * rt2x00queue_get_tx_queue - Convert tx queue index to queue pointer
1185 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1186 * @queue: rt2x00 queue index (see &enum data_queue_qid).
1188 * Returns NULL for non tx queues.
1190 static inline struct data_queue *
1191 rt2x00queue_get_tx_queue(struct rt2x00_dev *rt2x00dev,
1192 const enum data_queue_qid queue)
1194 if (queue < rt2x00dev->ops->tx_queues && rt2x00dev->tx)
1195 return &rt2x00dev->tx[queue];
1197 if (queue == QID_ATIM)
1198 return rt2x00dev->atim;
1204 * rt2x00queue_get_entry - Get queue entry where the given index points to.
1205 * @queue: Pointer to &struct data_queue from where we obtain the entry.
1206 * @index: Index identifier for obtaining the correct index.
1208 struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
1209 enum queue_index index);
1212 * rt2x00queue_pause_queue - Pause a data queue
1213 * @queue: Pointer to &struct data_queue.
1215 * This function will pause the data queue locally, preventing
1216 * new frames to be added to the queue (while the hardware is
1217 * still allowed to run).
1219 void rt2x00queue_pause_queue(struct data_queue *queue);
1222 * rt2x00queue_unpause_queue - unpause a data queue
1223 * @queue: Pointer to &struct data_queue.
1225 * This function will unpause the data queue locally, allowing
1226 * new frames to be added to the queue again.
1228 void rt2x00queue_unpause_queue(struct data_queue *queue);
1231 * rt2x00queue_start_queue - Start a data queue
1232 * @queue: Pointer to &struct data_queue.
1234 * This function will start handling all pending frames in the queue.
1236 void rt2x00queue_start_queue(struct data_queue *queue);
1239 * rt2x00queue_stop_queue - Halt a data queue
1240 * @queue: Pointer to &struct data_queue.
1242 * This function will stop all pending frames in the queue.
1244 void rt2x00queue_stop_queue(struct data_queue *queue);
1247 * rt2x00queue_flush_queue - Flush a data queue
1248 * @queue: Pointer to &struct data_queue.
1249 * @drop: True to drop all pending frames.
1251 * This function will flush the queue. After this call
1252 * the queue is guaranteed to be empty.
1254 void rt2x00queue_flush_queue(struct data_queue *queue, bool drop);
1257 * rt2x00queue_start_queues - Start all data queues
1258 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1260 * This function will loop through all available queues to start them
1262 void rt2x00queue_start_queues(struct rt2x00_dev *rt2x00dev);
1265 * rt2x00queue_stop_queues - Halt all data queues
1266 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1268 * This function will loop through all available queues to stop
1269 * any pending frames.
1271 void rt2x00queue_stop_queues(struct rt2x00_dev *rt2x00dev);
1274 * rt2x00queue_flush_queues - Flush all data queues
1275 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1276 * @drop: True to drop all pending frames.
1278 * This function will loop through all available queues to flush
1279 * any pending frames.
1281 void rt2x00queue_flush_queues(struct rt2x00_dev *rt2x00dev, bool drop);
1287 * rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
1288 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1289 * @type: The type of frame that is being dumped.
1290 * @skb: The skb containing the frame to be dumped.
1292 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1293 void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1294 enum rt2x00_dump_type type, struct sk_buff *skb);
1296 static inline void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1297 enum rt2x00_dump_type type,
1298 struct sk_buff *skb)
1301 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1304 * Utility functions.
1306 u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev,
1307 struct ieee80211_vif *vif);
1310 * Interrupt context handlers.
1312 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
1313 void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev);
1314 void rt2x00lib_dmastart(struct queue_entry *entry);
1315 void rt2x00lib_dmadone(struct queue_entry *entry);
1316 void rt2x00lib_txdone(struct queue_entry *entry,
1317 struct txdone_entry_desc *txdesc);
1318 void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status);
1319 void rt2x00lib_rxdone(struct queue_entry *entry, gfp_t gfp);
1322 * mac80211 handlers.
1324 void rt2x00mac_tx(struct ieee80211_hw *hw,
1325 struct ieee80211_tx_control *control,
1326 struct sk_buff *skb);
1327 int rt2x00mac_start(struct ieee80211_hw *hw);
1328 void rt2x00mac_stop(struct ieee80211_hw *hw);
1329 int rt2x00mac_add_interface(struct ieee80211_hw *hw,
1330 struct ieee80211_vif *vif);
1331 void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
1332 struct ieee80211_vif *vif);
1333 int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed);
1334 void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
1335 unsigned int changed_flags,
1336 unsigned int *total_flags,
1338 int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
1340 #ifdef CONFIG_RT2X00_LIB_CRYPTO
1341 int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1342 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1343 struct ieee80211_key_conf *key);
1345 #define rt2x00mac_set_key NULL
1346 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
1347 int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1348 struct ieee80211_sta *sta);
1349 int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1350 struct ieee80211_sta *sta);
1351 void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw);
1352 void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw);
1353 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
1354 struct ieee80211_low_level_stats *stats);
1355 void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
1356 struct ieee80211_vif *vif,
1357 struct ieee80211_bss_conf *bss_conf,
1359 int rt2x00mac_conf_tx(struct ieee80211_hw *hw,
1360 struct ieee80211_vif *vif, u16 queue,
1361 const struct ieee80211_tx_queue_params *params);
1362 void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw);
1363 void rt2x00mac_flush(struct ieee80211_hw *hw, bool drop);
1364 int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant);
1365 int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant);
1366 void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
1367 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max);
1368 bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw);
1371 * Driver allocation handlers.
1373 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
1374 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
1376 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
1377 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
1378 #endif /* CONFIG_PM */
1380 #endif /* RT2X00_H */