2 Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 Abstract: rt2x00 global information.
29 #include <linux/bitops.h>
30 #include <linux/skbuff.h>
31 #include <linux/workqueue.h>
32 #include <linux/firmware.h>
33 #include <linux/leds.h>
34 #include <linux/mutex.h>
35 #include <linux/etherdevice.h>
37 #include <net/mac80211.h>
39 #include "rt2x00debug.h"
40 #include "rt2x00leds.h"
41 #include "rt2x00reg.h"
42 #include "rt2x00queue.h"
47 #define DRV_VERSION "2.1.7"
48 #define DRV_PROJECT "http://rt2x00.serialmonkey.com"
52 * Debug output has to be enabled during compile time.
54 #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \
55 printk(__kernlvl "%s -> %s: %s - " __msg, \
56 wiphy_name((__dev)->hw->wiphy), __FUNCTION__, __lvl, ##__args)
58 #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \
59 printk(__kernlvl "%s -> %s: %s - " __msg, \
60 KBUILD_MODNAME, __FUNCTION__, __lvl, ##__args)
62 #ifdef CONFIG_RT2X00_DEBUG
63 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
64 DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args);
66 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
68 #endif /* CONFIG_RT2X00_DEBUG */
71 * Various debug levels.
72 * The debug levels PANIC and ERROR both indicate serious problems,
73 * for this reason they should never be ignored.
74 * The special ERROR_PROBE message is for messages that are generated
75 * when the rt2x00_dev is not yet initialized.
77 #define PANIC(__dev, __msg, __args...) \
78 DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
79 #define ERROR(__dev, __msg, __args...) \
80 DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
81 #define ERROR_PROBE(__msg, __args...) \
82 DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
83 #define WARNING(__dev, __msg, __args...) \
84 DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
85 #define NOTICE(__dev, __msg, __args...) \
86 DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
87 #define INFO(__dev, __msg, __args...) \
88 DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
89 #define DEBUG(__dev, __msg, __args...) \
90 DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
91 #define EEPROM(__dev, __msg, __args...) \
92 DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
95 * Standard timing and size defines.
96 * These values should follow the ieee80211 specifications.
99 #define IEEE80211_HEADER 24
103 #define SHORT_PREAMBLE 72
105 #define SHORT_SLOT_TIME 9
107 #define PIFS ( SIFS + SLOT_TIME )
108 #define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
109 #define DIFS ( PIFS + SLOT_TIME )
110 #define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
111 #define EIFS ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) )
114 * Chipset identification
115 * The chipset on the device is composed of a RT and RF chip.
116 * The chipset combination is important for determining device capabilities.
120 #define RT2460 0x0101
121 #define RT2560 0x0201
122 #define RT2570 0x1201
123 #define RT2561s 0x0301 /* Turbo */
124 #define RT2561 0x0302
125 #define RT2661 0x0401
126 #define RT2571 0x1300
133 * RF register values that belong to a particular channel.
144 * Antenna setup values.
146 struct antenna_setup {
152 * Quality statistics about the currently active link.
156 * Statistics required for Link tuning.
157 * For the average RSSI value we use the "Walking average" approach.
158 * When adding RSSI to the average value the following calculation
161 * avg_rssi = ((avg_rssi * 7) + rssi) / 8;
163 * The advantage of this approach is that we only need 1 variable
164 * to store the average in (No need for a count and a total).
165 * But more importantly, normal average values will over time
166 * move less and less towards newly added values this results
167 * that with link tuning, the device can have a very good RSSI
168 * for a few minutes but when the device is moved away from the AP
169 * the average will not decrease fast enough to compensate.
170 * The walking average compensates this and will move towards
171 * the new values correctly allowing a effective link tuning.
177 * Statistics required for Signal quality calculation.
178 * For calculating the Signal quality we have to determine
179 * the total number of success and failed RX and TX frames.
180 * After that we also use the average RSSI value to help
181 * determining the signal quality.
182 * For the calculation we will use the following algorithm:
184 * rssi_percentage = (avg_rssi * 100) / rssi_offset
185 * rx_percentage = (rx_success * 100) / rx_total
186 * tx_percentage = (tx_success * 100) / tx_total
187 * avg_signal = ((WEIGHT_RSSI * avg_rssi) +
188 * (WEIGHT_TX * tx_percentage) +
189 * (WEIGHT_RX * rx_percentage)) / 100
191 * This value should then be checked to not be greated then 100.
199 #define WEIGHT_RSSI 20
205 * Antenna settings about the currently active link.
212 #define ANTENNA_RX_DIVERSITY 0x00000001
213 #define ANTENNA_TX_DIVERSITY 0x00000002
214 #define ANTENNA_MODE_SAMPLE 0x00000004
217 * Currently active TX/RX antenna setup.
218 * When software diversity is used, this will indicate
219 * which antenna is actually used at this time.
221 struct antenna_setup active;
224 * RSSI information for the different antenna's.
225 * These statistics are used to determine when
226 * to switch antenna when using software diversity.
228 * rssi[0] -> Antenna A RSSI
229 * rssi[1] -> Antenna B RSSI
234 * Current RSSI average of the currently active antenna.
235 * Similar to the avg_rssi in the link_qual structure
236 * this value is updated by using the walking average.
242 * To optimize the quality of the link we need to store
243 * the quality of received frames and periodically
249 * The number of times the link has been tuned
250 * since the radio has been switched on.
255 * Quality measurement values.
257 struct link_qual qual;
260 * TX/RX antenna setup.
270 * Work structure for scheduling periodic link tuning.
272 struct delayed_work work;
276 * Small helper macro to work with moving/walking averages.
278 #define MOVING_AVERAGE(__avg, __val, __samples) \
279 ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) )
282 * When we lack RSSI information return something less then -80 to
283 * tell the driver to tune the device to maximum sensitivity.
285 #define DEFAULT_RSSI ( -128 )
288 * Link quality access functions.
290 static inline int rt2x00_get_link_rssi(struct link *link)
292 if (link->qual.avg_rssi && link->qual.rx_success)
293 return link->qual.avg_rssi;
297 static inline int rt2x00_get_link_ant_rssi(struct link *link)
299 if (link->ant.rssi_ant && link->qual.rx_success)
300 return link->ant.rssi_ant;
304 static inline void rt2x00_reset_link_ant_rssi(struct link *link)
306 link->ant.rssi_ant = 0;
309 static inline int rt2x00_get_link_ant_rssi_history(struct link *link,
312 if (link->ant.rssi_history[ant - ANTENNA_A])
313 return link->ant.rssi_history[ant - ANTENNA_A];
317 static inline int rt2x00_update_ant_rssi(struct link *link, int rssi)
319 int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A];
320 link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi;
325 * Interface structure
326 * Per interface configuration details, this structure
327 * is allocated as the private data for ieee80211_vif.
331 * All fields within the rt2x00_intf structure
332 * must be protected with a spinlock.
337 * BSS configuration. Copied from the structure
338 * passed to us through the bss_info_changed()
341 struct ieee80211_bss_conf conf;
349 * BBSID of the AP to associate with.
354 * Entry in the beacon queue which belongs to
355 * this interface. Each interface has its own
356 * dedicated beacon entry.
358 struct queue_entry *beacon;
361 * Actions that needed rescheduling.
363 unsigned int delayed_flags;
364 #define DELAYED_UPDATE_BEACON 0x00000001
365 #define DELAYED_CONFIG_ERP 0x00000002
366 #define DELAYED_LED_ASSOC 0x00000004
369 static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
371 return (struct rt2x00_intf *)vif->drv_priv;
375 * struct hw_mode_spec: Hardware specifications structure
377 * Details about the supported modes, rates and channels
378 * of a particular chipset. This is used by rt2x00lib
379 * to build the ieee80211_hw_mode array for mac80211.
381 * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
382 * @supported_rates: Rate types which are supported (CCK, OFDM).
383 * @num_channels: Number of supported channels. This is used as array size
384 * for @tx_power_a, @tx_power_bg and @channels.
385 * @channels: Device/chipset specific channel values (See &struct rf_channel).
386 * @tx_power_a: TX power values for all 5.2GHz channels (may be NULL).
387 * @tx_power_bg: TX power values for all 2.4GHz channels (may be NULL).
388 * @tx_power_default: Default TX power value to use when either
389 * @tx_power_a or @tx_power_bg is missing.
391 struct hw_mode_spec {
392 unsigned int supported_bands;
393 #define SUPPORT_BAND_2GHZ 0x00000001
394 #define SUPPORT_BAND_5GHZ 0x00000002
396 unsigned int supported_rates;
397 #define SUPPORT_RATE_CCK 0x00000001
398 #define SUPPORT_RATE_OFDM 0x00000002
400 unsigned int num_channels;
401 const struct rf_channel *channels;
403 const u8 *tx_power_a;
404 const u8 *tx_power_bg;
409 * Configuration structure wrapper around the
410 * mac80211 configuration structure.
411 * When mac80211 configures the driver, rt2x00lib
412 * can precalculate values which are equal for all
413 * rt2x00 drivers. Those values can be stored in here.
415 struct rt2x00lib_conf {
416 struct ieee80211_conf *conf;
417 struct rf_channel rf;
419 struct antenna_setup ant;
421 enum ieee80211_band band;
433 * Configuration structure for erp settings.
435 struct rt2x00lib_erp {
439 int ack_consume_time;
443 * Configuration structure wrapper around the
444 * rt2x00 interface configuration handler.
446 struct rt2x00intf_conf {
450 enum ieee80211_if_types type;
453 * TSF sync value, this is dependant on the operation type.
458 * The MAC and BSSID addressess are simple array of bytes,
459 * these arrays are little endian, so when sending the addressess
460 * to the drivers, copy the it into a endian-signed variable.
462 * Note that all devices (except rt2500usb) have 32 bits
463 * register word sizes. This means that whatever variable we
464 * pass _must_ be a multiple of 32 bits. Otherwise the device
465 * might not accept what we are sending to it.
466 * This will also make it easier for the driver to write
467 * the data to the device.
474 * rt2x00lib callback functions.
476 struct rt2x00lib_ops {
478 * Interrupt handlers.
480 irq_handler_t irq_handler;
483 * Device init handlers.
485 int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
486 char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
487 u16 (*get_firmware_crc) (void *data, const size_t len);
488 int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data,
492 * Device initialization/deinitialization handlers.
494 int (*initialize) (struct rt2x00_dev *rt2x00dev);
495 void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
498 * queue initialization handlers
500 void (*init_rxentry) (struct rt2x00_dev *rt2x00dev,
501 struct queue_entry *entry);
502 void (*init_txentry) (struct rt2x00_dev *rt2x00dev,
503 struct queue_entry *entry);
506 * Radio control handlers.
508 int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
509 enum dev_state state);
510 int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
511 void (*link_stats) (struct rt2x00_dev *rt2x00dev,
512 struct link_qual *qual);
513 void (*reset_tuner) (struct rt2x00_dev *rt2x00dev);
514 void (*link_tuner) (struct rt2x00_dev *rt2x00dev);
517 * TX control handlers
519 void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev,
521 struct txentry_desc *txdesc);
522 int (*write_tx_data) (struct queue_entry *entry);
523 int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
524 struct sk_buff *skb);
525 void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
526 const enum data_queue_qid queue);
529 * RX control handlers
531 void (*fill_rxdone) (struct queue_entry *entry,
532 struct rxdone_entry_desc *rxdesc);
535 * Configuration handlers.
537 void (*config_filter) (struct rt2x00_dev *rt2x00dev,
538 const unsigned int filter_flags);
539 void (*config_intf) (struct rt2x00_dev *rt2x00dev,
540 struct rt2x00_intf *intf,
541 struct rt2x00intf_conf *conf,
542 const unsigned int flags);
543 #define CONFIG_UPDATE_TYPE ( 1 << 1 )
544 #define CONFIG_UPDATE_MAC ( 1 << 2 )
545 #define CONFIG_UPDATE_BSSID ( 1 << 3 )
547 void (*config_erp) (struct rt2x00_dev *rt2x00dev,
548 struct rt2x00lib_erp *erp);
549 void (*config) (struct rt2x00_dev *rt2x00dev,
550 struct rt2x00lib_conf *libconf,
551 const unsigned int flags);
552 #define CONFIG_UPDATE_PHYMODE ( 1 << 1 )
553 #define CONFIG_UPDATE_CHANNEL ( 1 << 2 )
554 #define CONFIG_UPDATE_TXPOWER ( 1 << 3 )
555 #define CONFIG_UPDATE_ANTENNA ( 1 << 4 )
556 #define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 )
557 #define CONFIG_UPDATE_BEACON_INT ( 1 << 6 )
558 #define CONFIG_UPDATE_ALL 0xffff
562 * rt2x00 driver callback operation structure.
566 const unsigned int max_sta_intf;
567 const unsigned int max_ap_intf;
568 const unsigned int eeprom_size;
569 const unsigned int rf_size;
570 const unsigned int tx_queues;
571 const struct data_queue_desc *rx;
572 const struct data_queue_desc *tx;
573 const struct data_queue_desc *bcn;
574 const struct data_queue_desc *atim;
575 const struct rt2x00lib_ops *lib;
576 const struct ieee80211_ops *hw;
577 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
578 const struct rt2x00debug *debugfs;
579 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
583 * rt2x00 device flags
590 DEVICE_REGISTERED_HW,
593 DEVICE_STARTED_SUSPEND,
594 DEVICE_ENABLED_RADIO,
595 DEVICE_DISABLED_RADIO_HW,
600 DRIVER_REQUIRE_FIRMWARE,
601 DRIVER_REQUIRE_BEACON_GUARD,
602 DRIVER_REQUIRE_ATIM_QUEUE,
603 DRIVER_REQUIRE_SCHEDULED,
606 * Driver configuration
608 CONFIG_SUPPORT_HW_BUTTON,
611 CONFIG_EXTERNAL_LNA_A,
612 CONFIG_EXTERNAL_LNA_BG,
613 CONFIG_DOUBLE_ANTENNA,
614 CONFIG_DISABLE_LINK_TUNING,
618 * rt2x00 device structure.
623 * The structure stored in here depends on the
624 * system bus (PCI or USB).
625 * When accessing this variable, the rt2x00dev_{pci,usb}
626 * macro's should be used for correct typecasting.
631 * Callback functions.
633 const struct rt2x00_ops *ops;
636 * IEEE80211 control structure.
638 struct ieee80211_hw *hw;
639 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
640 enum ieee80211_band curr_band;
643 * rfkill structure for RF state switching support.
644 * This will only be compiled in when required.
646 #ifdef CONFIG_RT2X00_LIB_RFKILL
647 unsigned long rfkill_state;
648 #define RFKILL_STATE_ALLOCATED 1
649 #define RFKILL_STATE_REGISTERED 2
650 struct rfkill *rfkill;
651 struct input_polled_dev *poll_dev;
652 #endif /* CONFIG_RT2X00_LIB_RFKILL */
655 * If enabled, the debugfs interface structures
656 * required for deregistration of debugfs.
658 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
659 struct rt2x00debug_intf *debugfs_intf;
660 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
663 * LED structure for changing the LED status
664 * by mac8011 or the kernel.
666 #ifdef CONFIG_RT2X00_LIB_LEDS
667 struct rt2x00_led led_radio;
668 struct rt2x00_led led_assoc;
669 struct rt2x00_led led_qual;
671 #endif /* CONFIG_RT2X00_LIB_LEDS */
675 * In these flags the current status and some
676 * of the device capabilities are stored.
681 * Chipset identification.
683 struct rt2x00_chip chip;
686 * hw capability specifications.
688 struct hw_mode_spec spec;
691 * This is the default TX/RX antenna setup as indicated
692 * by the device's EEPROM. When mac80211 sets its
693 * antenna value to 0 we should be using these values.
695 struct antenna_setup default_ant;
699 * csr.base: CSR base register address. (PCI)
700 * csr.cache: CSR cache for usb_control_msg. (USB)
708 * Mutex to protect register accesses on USB devices.
709 * There are 2 reasons this is needed, one is to ensure
710 * use of the csr_cache (for USB devices) by one thread
711 * isn't corrupted by another thread trying to access it.
712 * The other is that access to BBP and RF registers
713 * require multiple BUS transactions and if another thread
714 * attempted to access one of those registers at the same
715 * time one of the writes could silently fail.
717 struct mutex usb_cache_mutex;
720 * Current packet filter configuration for the device.
721 * This contains all currently active FIF_* flags send
722 * to us by mac80211 during configure_filter().
724 unsigned int packet_filter;
728 * - Open ap interface count.
729 * - Open sta interface count.
730 * - Association count.
732 unsigned int intf_ap_count;
733 unsigned int intf_sta_count;
734 unsigned int intf_associated;
747 * Active RF register values.
748 * These are stored here so we don't need
749 * to read the rf registers and can directly
750 * use this value instead.
751 * This field should be accessed by using
752 * rt2x00_rf_read() and rt2x00_rf_write().
757 * USB Max frame size (for rt2500usb & rt73usb).
762 * Current TX power value.
767 * Rssi <-> Dbm offset
772 * Frequency offset (for rt61pci & rt73usb).
777 * Low level statistics which will have
778 * to be kept up to date while device is running.
780 struct ieee80211_low_level_stats low_level_stats;
783 * RX configuration information.
785 struct ieee80211_rx_status rx_status;
790 struct work_struct intf_work;
791 struct work_struct filter_work;
794 * Data queue arrays for RX, TX and Beacon.
795 * The Beacon array also contains the Atim queue
796 * if that is supported by the device.
798 unsigned int data_queues;
799 struct data_queue *rx;
800 struct data_queue *tx;
801 struct data_queue *bcn;
806 const struct firmware *fw;
811 * The RF is being accessed by word index.
813 static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
814 const unsigned int word, u32 *data)
816 *data = rt2x00dev->rf[word];
819 static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
820 const unsigned int word, u32 data)
822 rt2x00dev->rf[word] = data;
826 * Generic EEPROM access.
827 * The EEPROM is being accessed by word index.
829 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
830 const unsigned int word)
832 return (void *)&rt2x00dev->eeprom[word];
835 static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
836 const unsigned int word, u16 *data)
838 *data = le16_to_cpu(rt2x00dev->eeprom[word]);
841 static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
842 const unsigned int word, u16 data)
844 rt2x00dev->eeprom[word] = cpu_to_le16(data);
850 static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
851 const u16 rt, const u16 rf, const u32 rev)
854 "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n",
857 rt2x00dev->chip.rt = rt;
858 rt2x00dev->chip.rf = rf;
859 rt2x00dev->chip.rev = rev;
862 static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip)
864 return (chipset->rt == chip);
867 static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip)
869 return (chipset->rf == chip);
872 static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset)
877 static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset,
880 return (((chipset->rev & 0xffff0) == rev) &&
881 !!(chipset->rev & 0x0000f));
885 * Duration calculations
886 * The rate variable passed is: 100kbs.
887 * To convert from bytes to bits we multiply size with 8,
888 * then the size is multiplied with 10 to make the
889 * real rate -> rate argument correction.
891 static inline u16 get_duration(const unsigned int size, const u8 rate)
893 return ((size * 8 * 10) / rate);
896 static inline u16 get_duration_res(const unsigned int size, const u8 rate)
898 return ((size * 8 * 10) % rate);
902 * rt2x00queue_alloc_skb - allocate a skb.
903 * @queue: The queue for which the skb will be applicable.
905 struct sk_buff *rt2x00queue_alloc_skb(struct data_queue *queue);
908 * rt2x00queue_free_skb - free a skb
909 * @skb: The skb to free.
911 void rt2x00queue_free_skb(struct sk_buff *skb);
914 * rt2x00queue_create_tx_descriptor - Create TX descriptor from mac80211 input
915 * @entry: The entry which will be used to transfer the TX frame.
916 * @txdesc: rt2x00 TX descriptor which will be initialized by this function.
918 * This function will initialize the &struct txentry_desc based on information
919 * from mac80211. This descriptor can then be used by rt2x00lib and the drivers
920 * to correctly initialize the hardware descriptor.
921 * Note that before calling this function the skb->cb array must be untouched
922 * by rt2x00lib. Only after this function completes will it be save to
923 * overwrite the skb->cb information.
924 * The reason for this is that mac80211 writes its own tx information into
925 * the skb->cb array, and this function will use that information to initialize
926 * the &struct txentry_desc structure.
928 void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
929 struct txentry_desc *txdesc);
932 * rt2x00queue_write_tx_descriptor - Write TX descriptor to hardware
933 * @entry: The entry which will be used to transfer the TX frame.
934 * @txdesc: TX descriptor which will be used to write hardware descriptor
936 * This function will write a TX descriptor initialized by
937 * &rt2x00queue_create_tx_descriptor to the hardware. After this call
938 * has completed the frame is now owned by the hardware, the hardware
939 * queue will have automatically be kicked unless this frame was generated
940 * by rt2x00lib, in which case the frame is "special" and must be kicked
943 void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
944 struct txentry_desc *txdesc);
947 * rt2x00queue_get_queue - Convert queue index to queue pointer
948 * @rt2x00dev: Pointer to &struct rt2x00_dev.
949 * @queue: rt2x00 queue index (see &enum data_queue_qid).
951 struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
952 const enum data_queue_qid queue);
955 * rt2x00queue_get_entry - Get queue entry where the given index points to.
956 * @queue: Pointer to &struct data_queue from where we obtain the entry.
957 * @index: Index identifier for obtaining the correct index.
959 struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
960 enum queue_index index);
963 * rt2x00queue_index_inc - Index incrementation function
964 * @queue: Queue (&struct data_queue) to perform the action on.
965 * @index: Index type (&enum queue_index) to perform the action on.
967 * This function will increase the requested index on the queue,
968 * it will grab the appropriate locks and handle queue overflow events by
969 * resetting the index to the start of the queue.
971 void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index);
975 * Interrupt context handlers.
977 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
978 void rt2x00lib_txdone(struct queue_entry *entry,
979 struct txdone_entry_desc *txdesc);
980 void rt2x00lib_rxdone(struct queue_entry *entry,
981 struct rxdone_entry_desc *rxdesc);
986 int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
987 int rt2x00mac_start(struct ieee80211_hw *hw);
988 void rt2x00mac_stop(struct ieee80211_hw *hw);
989 int rt2x00mac_add_interface(struct ieee80211_hw *hw,
990 struct ieee80211_if_init_conf *conf);
991 void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
992 struct ieee80211_if_init_conf *conf);
993 int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
994 int rt2x00mac_config_interface(struct ieee80211_hw *hw,
995 struct ieee80211_vif *vif,
996 struct ieee80211_if_conf *conf);
997 void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
998 unsigned int changed_flags,
999 unsigned int *total_flags,
1000 int mc_count, struct dev_addr_list *mc_list);
1001 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
1002 struct ieee80211_low_level_stats *stats);
1003 int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw,
1004 struct ieee80211_tx_queue_stats *stats);
1005 void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
1006 struct ieee80211_vif *vif,
1007 struct ieee80211_bss_conf *bss_conf,
1009 int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1010 const struct ieee80211_tx_queue_params *params);
1013 * Driver allocation handlers.
1015 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
1016 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
1018 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
1019 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
1020 #endif /* CONFIG_PM */
1022 #endif /* RT2X00_H */