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(__dev, KERN_WARNING, "Warning", __msg, ##__args)
92 #define NOTICE(__dev, __msg, __args...) \
93 DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
94 #define INFO(__dev, __msg, __args...) \
95 DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
96 #define DEBUG(__dev, __msg, __args...) \
97 DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
98 #define EEPROM(__dev, __msg, __args...) \
99 DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
102 * Duration calculations
103 * The rate variable passed is: 100kbs.
104 * To convert from bytes to bits we multiply size with 8,
105 * then the size is multiplied with 10 to make the
106 * real rate -> rate argument correction.
108 #define GET_DURATION(__size, __rate) (((__size) * 8 * 10) / (__rate))
109 #define GET_DURATION_RES(__size, __rate)(((__size) * 8 * 10) % (__rate))
112 * Determine the number of L2 padding bytes required between the header and
115 #define L2PAD_SIZE(__hdrlen) (-(__hdrlen) & 3)
118 * Determine the alignment requirement,
119 * to make sure the 802.11 payload is padded to a 4-byte boundrary
120 * we must determine the address of the payload and calculate the
121 * amount of bytes needed to move the data.
123 #define ALIGN_SIZE(__skb, __header) \
124 ( ((unsigned long)((__skb)->data + (__header))) & 3 )
127 * Constants for extra TX headroom for alignment purposes.
129 #define RT2X00_ALIGN_SIZE 4 /* Only whole frame needs alignment */
130 #define RT2X00_L2PAD_SIZE 8 /* Both header & payload need alignment */
133 * Standard timing and size defines.
134 * These values should follow the ieee80211 specifications.
137 #define IEEE80211_HEADER 24
141 #define SHORT_PREAMBLE 72
143 #define SHORT_SLOT_TIME 9
145 #define PIFS ( SIFS + SLOT_TIME )
146 #define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
147 #define DIFS ( PIFS + SLOT_TIME )
148 #define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
149 #define EIFS ( SIFS + DIFS + \
150 GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
151 #define SHORT_EIFS ( SIFS + SHORT_DIFS + \
152 GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
155 * Structure for average calculation
156 * The avg field contains the actual average value,
157 * but avg_weight is internally used during calculations
158 * to prevent rounding errors.
165 enum rt2x00_chip_intf
{
166 RT2X00_CHIP_INTF_PCI
,
167 RT2X00_CHIP_INTF_PCIE
,
168 RT2X00_CHIP_INTF_USB
,
169 RT2X00_CHIP_INTF_SOC
,
173 * Chipset identification
174 * The chipset on the device is composed of a RT and RF chip.
175 * The chipset combination is important for determining device capabilities.
179 #define RT2460 0x2460
180 #define RT2560 0x2560
181 #define RT2570 0x2570
182 #define RT2661 0x2661
183 #define RT2573 0x2573
184 #define RT2860 0x2860 /* 2.4GHz */
185 #define RT2872 0x2872 /* WSOC */
186 #define RT2883 0x2883 /* WSOC */
187 #define RT3070 0x3070
188 #define RT3071 0x3071
189 #define RT3090 0x3090 /* 2.4GHz PCIe */
190 #define RT3290 0x3290
191 #define RT3352 0x3352 /* WSOC */
192 #define RT3390 0x3390
193 #define RT3572 0x3572
194 #define RT3593 0x3593
195 #define RT3883 0x3883 /* WSOC */
196 #define RT5390 0x5390 /* 2.4GHz */
197 #define RT5392 0x5392 /* 2.4GHz */
202 enum rt2x00_chip_intf intf
;
206 * RF register values that belong to a particular channel.
217 * Channel information structure
219 struct channel_info
{
221 #define GEOGRAPHY_ALLOWED 0x00000001
224 short default_power1
;
225 short default_power2
;
229 * Antenna setup values.
231 struct antenna_setup
{
239 * Quality statistics about the currently active link.
243 * Statistics required for Link tuning by driver
244 * The rssi value is provided by rt2x00lib during the
245 * link_tuner() callback function.
246 * The false_cca field is filled during the link_stats()
247 * callback function and could be used during the
248 * link_tuner() callback function.
255 * Hardware driver will tune the VGC level during each call
256 * to the link_tuner() callback function. This vgc_level is
257 * is determined based on the link quality statistics like
258 * average RSSI and the false CCA count.
260 * In some cases the drivers need to differentiate between
261 * the currently "desired" VGC level and the level configured
262 * in the hardware. The latter is important to reduce the
263 * number of BBP register reads to reduce register access
264 * overhead. For this reason we store both values here.
270 * Statistics required for Signal quality calculation.
271 * These fields might be changed during the link_stats()
281 * Antenna settings about the currently active link.
288 #define ANTENNA_RX_DIVERSITY 0x00000001
289 #define ANTENNA_TX_DIVERSITY 0x00000002
290 #define ANTENNA_MODE_SAMPLE 0x00000004
293 * Currently active TX/RX antenna setup.
294 * When software diversity is used, this will indicate
295 * which antenna is actually used at this time.
297 struct antenna_setup active
;
300 * RSSI history information for the antenna.
301 * Used to determine when to switch antenna
302 * when using software diversity.
307 * Current RSSI average of the currently active antenna.
308 * Similar to the avg_rssi in the link_qual structure
309 * this value is updated by using the walking average.
311 struct avg_val rssi_ant
;
315 * To optimize the quality of the link we need to store
316 * the quality of received frames and periodically
322 * The number of times the link has been tuned
323 * since the radio has been switched on.
328 * Quality measurement values.
330 struct link_qual qual
;
333 * TX/RX antenna setup.
338 * Currently active average RSSI value
340 struct avg_val avg_rssi
;
343 * Work structure for scheduling periodic link tuning.
345 struct delayed_work work
;
348 * Work structure for scheduling periodic watchdog monitoring.
349 * This work must be scheduled on the kernel workqueue, while
350 * all other work structures must be queued on the mac80211
351 * workqueue. This guarantees that the watchdog can schedule
352 * other work structures and wait for their completion in order
353 * to bring the device/driver back into the desired state.
355 struct delayed_work watchdog_work
;
358 * Work structure for scheduling periodic AGC adjustments.
360 struct delayed_work agc_work
;
363 * Work structure for scheduling periodic VCO calibration.
365 struct delayed_work vco_work
;
368 enum rt2x00_delayed_flags
{
369 DELAYED_UPDATE_BEACON
,
373 * Interface structure
374 * Per interface configuration details, this structure
375 * is allocated as the private data for ieee80211_vif.
379 * beacon->skb must be protected with the mutex.
381 struct mutex beacon_skb_mutex
;
384 * Entry in the beacon queue which belongs to
385 * this interface. Each interface has its own
386 * dedicated beacon entry.
388 struct queue_entry
*beacon
;
392 * Actions that needed rescheduling.
394 unsigned long delayed_flags
;
397 * Software sequence counter, this is only required
398 * for hardware which doesn't support hardware
404 static inline struct rt2x00_intf
* vif_to_intf(struct ieee80211_vif
*vif
)
406 return (struct rt2x00_intf
*)vif
->drv_priv
;
410 * struct hw_mode_spec: Hardware specifications structure
412 * Details about the supported modes, rates and channels
413 * of a particular chipset. This is used by rt2x00lib
414 * to build the ieee80211_hw_mode array for mac80211.
416 * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
417 * @supported_rates: Rate types which are supported (CCK, OFDM).
418 * @num_channels: Number of supported channels. This is used as array size
419 * for @tx_power_a, @tx_power_bg and @channels.
420 * @channels: Device/chipset specific channel values (See &struct rf_channel).
421 * @channels_info: Additional information for channels (See &struct channel_info).
422 * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
424 struct hw_mode_spec
{
425 unsigned int supported_bands
;
426 #define SUPPORT_BAND_2GHZ 0x00000001
427 #define SUPPORT_BAND_5GHZ 0x00000002
429 unsigned int supported_rates
;
430 #define SUPPORT_RATE_CCK 0x00000001
431 #define SUPPORT_RATE_OFDM 0x00000002
433 unsigned int num_channels
;
434 const struct rf_channel
*channels
;
435 const struct channel_info
*channels_info
;
437 struct ieee80211_sta_ht_cap ht
;
441 * Configuration structure wrapper around the
442 * mac80211 configuration structure.
443 * When mac80211 configures the driver, rt2x00lib
444 * can precalculate values which are equal for all
445 * rt2x00 drivers. Those values can be stored in here.
447 struct rt2x00lib_conf
{
448 struct ieee80211_conf
*conf
;
450 struct rf_channel rf
;
451 struct channel_info channel
;
455 * Configuration structure for erp settings.
457 struct rt2x00lib_erp
{
475 * Configuration structure for hardware encryption.
477 struct rt2x00lib_crypto
{
480 enum set_key_cmd cmd
;
493 * Configuration structure wrapper around the
494 * rt2x00 interface configuration handler.
496 struct rt2x00intf_conf
{
500 enum nl80211_iftype type
;
503 * TSF sync value, this is dependent on the operation type.
508 * The MAC and BSSID addresses are simple array of bytes,
509 * these arrays are little endian, so when sending the addresses
510 * to the drivers, copy the it into a endian-signed variable.
512 * Note that all devices (except rt2500usb) have 32 bits
513 * register word sizes. This means that whatever variable we
514 * pass _must_ be a multiple of 32 bits. Otherwise the device
515 * might not accept what we are sending to it.
516 * This will also make it easier for the driver to write
517 * the data to the device.
524 * Private structure for storing STA details
525 * wcid: Wireless Client ID
531 static inline struct rt2x00_sta
* sta_to_rt2x00_sta(struct ieee80211_sta
*sta
)
533 return (struct rt2x00_sta
*)sta
->drv_priv
;
537 * rt2x00lib callback functions.
539 struct rt2x00lib_ops
{
541 * Interrupt handlers.
543 irq_handler_t irq_handler
;
546 * TX status tasklet handler.
548 void (*txstatus_tasklet
) (unsigned long data
);
549 void (*pretbtt_tasklet
) (unsigned long data
);
550 void (*tbtt_tasklet
) (unsigned long data
);
551 void (*rxdone_tasklet
) (unsigned long data
);
552 void (*autowake_tasklet
) (unsigned long data
);
555 * Device init handlers.
557 int (*probe_hw
) (struct rt2x00_dev
*rt2x00dev
);
558 char *(*get_firmware_name
) (struct rt2x00_dev
*rt2x00dev
);
559 int (*check_firmware
) (struct rt2x00_dev
*rt2x00dev
,
560 const u8
*data
, const size_t len
);
561 int (*load_firmware
) (struct rt2x00_dev
*rt2x00dev
,
562 const u8
*data
, const size_t len
);
565 * Device initialization/deinitialization handlers.
567 int (*initialize
) (struct rt2x00_dev
*rt2x00dev
);
568 void (*uninitialize
) (struct rt2x00_dev
*rt2x00dev
);
571 * queue initialization handlers
573 bool (*get_entry_state
) (struct queue_entry
*entry
);
574 void (*clear_entry
) (struct queue_entry
*entry
);
577 * Radio control handlers.
579 int (*set_device_state
) (struct rt2x00_dev
*rt2x00dev
,
580 enum dev_state state
);
581 int (*rfkill_poll
) (struct rt2x00_dev
*rt2x00dev
);
582 void (*link_stats
) (struct rt2x00_dev
*rt2x00dev
,
583 struct link_qual
*qual
);
584 void (*reset_tuner
) (struct rt2x00_dev
*rt2x00dev
,
585 struct link_qual
*qual
);
586 void (*link_tuner
) (struct rt2x00_dev
*rt2x00dev
,
587 struct link_qual
*qual
, const u32 count
);
588 void (*gain_calibration
) (struct rt2x00_dev
*rt2x00dev
);
589 void (*vco_calibration
) (struct rt2x00_dev
*rt2x00dev
);
592 * Data queue handlers.
594 void (*watchdog
) (struct rt2x00_dev
*rt2x00dev
);
595 void (*start_queue
) (struct data_queue
*queue
);
596 void (*kick_queue
) (struct data_queue
*queue
);
597 void (*stop_queue
) (struct data_queue
*queue
);
598 void (*flush_queue
) (struct data_queue
*queue
, bool drop
);
599 void (*tx_dma_done
) (struct queue_entry
*entry
);
602 * TX control handlers
604 void (*write_tx_desc
) (struct queue_entry
*entry
,
605 struct txentry_desc
*txdesc
);
606 void (*write_tx_data
) (struct queue_entry
*entry
,
607 struct txentry_desc
*txdesc
);
608 void (*write_beacon
) (struct queue_entry
*entry
,
609 struct txentry_desc
*txdesc
);
610 void (*clear_beacon
) (struct queue_entry
*entry
);
611 int (*get_tx_data_len
) (struct queue_entry
*entry
);
614 * RX control handlers
616 void (*fill_rxdone
) (struct queue_entry
*entry
,
617 struct rxdone_entry_desc
*rxdesc
);
620 * Configuration handlers.
622 int (*config_shared_key
) (struct rt2x00_dev
*rt2x00dev
,
623 struct rt2x00lib_crypto
*crypto
,
624 struct ieee80211_key_conf
*key
);
625 int (*config_pairwise_key
) (struct rt2x00_dev
*rt2x00dev
,
626 struct rt2x00lib_crypto
*crypto
,
627 struct ieee80211_key_conf
*key
);
628 void (*config_filter
) (struct rt2x00_dev
*rt2x00dev
,
629 const unsigned int filter_flags
);
630 void (*config_intf
) (struct rt2x00_dev
*rt2x00dev
,
631 struct rt2x00_intf
*intf
,
632 struct rt2x00intf_conf
*conf
,
633 const unsigned int flags
);
634 #define CONFIG_UPDATE_TYPE ( 1 << 1 )
635 #define CONFIG_UPDATE_MAC ( 1 << 2 )
636 #define CONFIG_UPDATE_BSSID ( 1 << 3 )
638 void (*config_erp
) (struct rt2x00_dev
*rt2x00dev
,
639 struct rt2x00lib_erp
*erp
,
641 void (*config_ant
) (struct rt2x00_dev
*rt2x00dev
,
642 struct antenna_setup
*ant
);
643 void (*config
) (struct rt2x00_dev
*rt2x00dev
,
644 struct rt2x00lib_conf
*libconf
,
645 const unsigned int changed_flags
);
646 int (*sta_add
) (struct rt2x00_dev
*rt2x00dev
,
647 struct ieee80211_vif
*vif
,
648 struct ieee80211_sta
*sta
);
649 int (*sta_remove
) (struct rt2x00_dev
*rt2x00dev
,
654 * rt2x00 driver callback operation structure.
658 const unsigned int drv_data_size
;
659 const unsigned int max_ap_intf
;
660 const unsigned int eeprom_size
;
661 const unsigned int rf_size
;
662 const unsigned int tx_queues
;
663 const unsigned int extra_tx_headroom
;
664 const struct data_queue_desc
*rx
;
665 const struct data_queue_desc
*tx
;
666 const struct data_queue_desc
*bcn
;
667 const struct data_queue_desc
*atim
;
668 const struct rt2x00lib_ops
*lib
;
670 const struct ieee80211_ops
*hw
;
671 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
672 const struct rt2x00debug
*debugfs
;
673 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
679 enum rt2x00_state_flags
{
683 DEVICE_STATE_PRESENT
,
684 DEVICE_STATE_REGISTERED_HW
,
685 DEVICE_STATE_INITIALIZED
,
686 DEVICE_STATE_STARTED
,
687 DEVICE_STATE_ENABLED_RADIO
,
688 DEVICE_STATE_SCANNING
,
691 * Driver configuration
699 * Mark we currently are sequentially reading TX_STA_FIFO register
700 * FIXME: this is for only rt2800usb, should go to private data
706 * rt2x00 capability flags
708 enum rt2x00_capability_flags
{
713 REQUIRE_BEACON_GUARD
,
718 REQUIRE_TXSTATUS_FIFO
,
719 REQUIRE_TASKLET_CONTEXT
,
727 CAPABILITY_HW_BUTTON
,
728 CAPABILITY_HW_CRYPTO
,
729 CAPABILITY_POWER_LIMIT
,
730 CAPABILITY_CONTROL_FILTERS
,
731 CAPABILITY_CONTROL_FILTER_PSPOLL
,
732 CAPABILITY_PRE_TBTT_INTERRUPT
,
733 CAPABILITY_LINK_TUNING
,
734 CAPABILITY_FRAME_TYPE
,
735 CAPABILITY_RF_SEQUENCE
,
736 CAPABILITY_EXTERNAL_LNA_A
,
737 CAPABILITY_EXTERNAL_LNA_BG
,
738 CAPABILITY_DOUBLE_ANTENNA
,
739 CAPABILITY_BT_COEXIST
,
740 CAPABILITY_VCO_RECALIBRATION
,
744 * Interface combinations
752 * rt2x00 device structure.
757 * The structure stored in here depends on the
758 * system bus (PCI or USB).
759 * When accessing this variable, the rt2x00dev_{pci,usb}
760 * macros should be used for correct typecasting.
765 * Callback functions.
767 const struct rt2x00_ops
*ops
;
775 * IEEE80211 control structure.
777 struct ieee80211_hw
*hw
;
778 struct ieee80211_supported_band bands
[IEEE80211_NUM_BANDS
];
779 enum ieee80211_band curr_band
;
783 * If enabled, the debugfs interface structures
784 * required for deregistration of debugfs.
786 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
787 struct rt2x00debug_intf
*debugfs_intf
;
788 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
791 * LED structure for changing the LED status
792 * by mac8011 or the kernel.
794 #ifdef CONFIG_RT2X00_LIB_LEDS
795 struct rt2x00_led led_radio
;
796 struct rt2x00_led led_assoc
;
797 struct rt2x00_led led_qual
;
799 #endif /* CONFIG_RT2X00_LIB_LEDS */
802 * Device state flags.
803 * In these flags the current status is stored.
804 * Access to these flags should occur atomically.
809 * Device capabiltiy flags.
810 * In these flags the device/driver capabilities are stored.
811 * Access to these flags should occur non-atomically.
813 unsigned long cap_flags
;
816 * Device information, Bus IRQ and name (PCI, SoC)
822 * Chipset identification.
824 struct rt2x00_chip chip
;
827 * hw capability specifications.
829 struct hw_mode_spec spec
;
832 * This is the default TX/RX antenna setup as indicated
833 * by the device's EEPROM.
835 struct antenna_setup default_ant
;
839 * csr.base: CSR base register address. (PCI)
840 * csr.cache: CSR cache for usb_control_msg. (USB)
848 * Mutex to protect register accesses.
849 * For PCI and USB devices it protects against concurrent indirect
850 * register access (BBP, RF, MCU) since accessing those
851 * registers require multiple calls to the CSR registers.
852 * For USB devices it also protects the csr_cache since that
853 * field is used for normal CSR access and it cannot support
854 * multiple callers simultaneously.
856 struct mutex csr_mutex
;
859 * Current packet filter configuration for the device.
860 * This contains all currently active FIF_* flags send
861 * to us by mac80211 during configure_filter().
863 unsigned int packet_filter
;
867 * - Open ap interface count.
868 * - Open sta interface count.
869 * - Association count.
870 * - Beaconing enabled count.
872 unsigned int intf_ap_count
;
873 unsigned int intf_sta_count
;
874 unsigned int intf_associated
;
875 unsigned int intf_beaconing
;
878 * Interface combinations
880 struct ieee80211_iface_limit if_limits_ap
;
881 struct ieee80211_iface_combination if_combinations
[NUM_IF_COMB
];
894 * Active RF register values.
895 * These are stored here so we don't need
896 * to read the rf registers and can directly
897 * use this value instead.
898 * This field should be accessed by using
899 * rt2x00_rf_read() and rt2x00_rf_write().
909 * Current TX power value.
914 * Current retry values.
920 * Rssi <-> Dbm offset
940 * Timestamp of last received beacon
942 unsigned long last_beacon
;
945 * Low level statistics which will have
946 * to be kept up to date while device is running.
948 struct ieee80211_low_level_stats low_level_stats
;
951 * Work queue for all work which should not be placed
952 * on the mac80211 workqueue (because of dependencies
953 * between various work structures).
955 struct workqueue_struct
*workqueue
;
959 * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
960 * which means it cannot be placed on the hw->workqueue
961 * due to RTNL locking requirements.
963 struct work_struct intf_work
;
966 * Scheduled work for TX/RX done handling (USB devices)
968 struct work_struct rxdone_work
;
969 struct work_struct txdone_work
;
974 struct delayed_work autowakeup_work
;
975 struct work_struct sleep_work
;
978 * Data queue arrays for RX, TX, Beacon and ATIM.
980 unsigned int data_queues
;
981 struct data_queue
*rx
;
982 struct data_queue
*tx
;
983 struct data_queue
*bcn
;
984 struct data_queue
*atim
;
989 const struct firmware
*fw
;
992 * FIFO for storing tx status reports between isr and tasklet.
994 DECLARE_KFIFO_PTR(txstatus_fifo
, u32
);
997 * Timer to ensure tx status reports are read (rt2800usb).
999 struct hrtimer txstatus_timer
;
1002 * Tasklet for processing tx status reports (rt2800pci).
1004 struct tasklet_struct txstatus_tasklet
;
1005 struct tasklet_struct pretbtt_tasklet
;
1006 struct tasklet_struct tbtt_tasklet
;
1007 struct tasklet_struct rxdone_tasklet
;
1008 struct tasklet_struct autowake_tasklet
;
1011 * Used for VCO periodic calibration.
1016 * Protect the interrupt mask register.
1018 spinlock_t irqmask_lock
;
1023 * Some registers require multiple attempts before success,
1024 * in those cases REGISTER_BUSY_COUNT attempts should be
1025 * taken with a REGISTER_BUSY_DELAY interval.
1027 #define REGISTER_BUSY_COUNT 100
1028 #define REGISTER_BUSY_DELAY 100
1031 * Generic RF access.
1032 * The RF is being accessed by word index.
1034 static inline void rt2x00_rf_read(struct rt2x00_dev
*rt2x00dev
,
1035 const unsigned int word
, u32
*data
)
1037 BUG_ON(word
< 1 || word
> rt2x00dev
->ops
->rf_size
/ sizeof(u32
));
1038 *data
= rt2x00dev
->rf
[word
- 1];
1041 static inline void rt2x00_rf_write(struct rt2x00_dev
*rt2x00dev
,
1042 const unsigned int word
, u32 data
)
1044 BUG_ON(word
< 1 || word
> rt2x00dev
->ops
->rf_size
/ sizeof(u32
));
1045 rt2x00dev
->rf
[word
- 1] = data
;
1049 * Generic EEPROM access.
1050 * The EEPROM is being accessed by word index.
1052 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev
*rt2x00dev
,
1053 const unsigned int word
)
1055 return (void *)&rt2x00dev
->eeprom
[word
];
1058 static inline void rt2x00_eeprom_read(struct rt2x00_dev
*rt2x00dev
,
1059 const unsigned int word
, u16
*data
)
1061 *data
= le16_to_cpu(rt2x00dev
->eeprom
[word
]);
1064 static inline void rt2x00_eeprom_write(struct rt2x00_dev
*rt2x00dev
,
1065 const unsigned int word
, u16 data
)
1067 rt2x00dev
->eeprom
[word
] = cpu_to_le16(data
);
1073 static inline void rt2x00_set_chip(struct rt2x00_dev
*rt2x00dev
,
1074 const u16 rt
, const u16 rf
, const u16 rev
)
1076 rt2x00dev
->chip
.rt
= rt
;
1077 rt2x00dev
->chip
.rf
= rf
;
1078 rt2x00dev
->chip
.rev
= rev
;
1081 "Chipset detected - rt: %04x, rf: %04x, rev: %04x.\n",
1082 rt2x00dev
->chip
.rt
, rt2x00dev
->chip
.rf
, rt2x00dev
->chip
.rev
);
1085 static inline bool rt2x00_rt(struct rt2x00_dev
*rt2x00dev
, const u16 rt
)
1087 return (rt2x00dev
->chip
.rt
== rt
);
1090 static inline bool rt2x00_rf(struct rt2x00_dev
*rt2x00dev
, const u16 rf
)
1092 return (rt2x00dev
->chip
.rf
== rf
);
1095 static inline u16
rt2x00_rev(struct rt2x00_dev
*rt2x00dev
)
1097 return rt2x00dev
->chip
.rev
;
1100 static inline bool rt2x00_rt_rev(struct rt2x00_dev
*rt2x00dev
,
1101 const u16 rt
, const u16 rev
)
1103 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) == rev
);
1106 static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev
*rt2x00dev
,
1107 const u16 rt
, const u16 rev
)
1109 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) < rev
);
1112 static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev
*rt2x00dev
,
1113 const u16 rt
, const u16 rev
)
1115 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) >= rev
);
1118 static inline void rt2x00_set_chip_intf(struct rt2x00_dev
*rt2x00dev
,
1119 enum rt2x00_chip_intf intf
)
1121 rt2x00dev
->chip
.intf
= intf
;
1124 static inline bool rt2x00_intf(struct rt2x00_dev
*rt2x00dev
,
1125 enum rt2x00_chip_intf intf
)
1127 return (rt2x00dev
->chip
.intf
== intf
);
1130 static inline bool rt2x00_is_pci(struct rt2x00_dev
*rt2x00dev
)
1132 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCI
) ||
1133 rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCIE
);
1136 static inline bool rt2x00_is_pcie(struct rt2x00_dev
*rt2x00dev
)
1138 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCIE
);
1141 static inline bool rt2x00_is_usb(struct rt2x00_dev
*rt2x00dev
)
1143 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_USB
);
1146 static inline bool rt2x00_is_soc(struct rt2x00_dev
*rt2x00dev
)
1148 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_SOC
);
1152 * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
1153 * @entry: Pointer to &struct queue_entry
1155 void rt2x00queue_map_txskb(struct queue_entry
*entry
);
1158 * rt2x00queue_unmap_skb - Unmap a skb from DMA.
1159 * @entry: Pointer to &struct queue_entry
1161 void rt2x00queue_unmap_skb(struct queue_entry
*entry
);
1164 * rt2x00queue_get_tx_queue - Convert tx queue index to queue pointer
1165 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1166 * @queue: rt2x00 queue index (see &enum data_queue_qid).
1168 * Returns NULL for non tx queues.
1170 static inline struct data_queue
*
1171 rt2x00queue_get_tx_queue(struct rt2x00_dev
*rt2x00dev
,
1172 const enum data_queue_qid queue
)
1174 if (queue
< rt2x00dev
->ops
->tx_queues
&& rt2x00dev
->tx
)
1175 return &rt2x00dev
->tx
[queue
];
1177 if (queue
== QID_ATIM
)
1178 return rt2x00dev
->atim
;
1184 * rt2x00queue_get_entry - Get queue entry where the given index points to.
1185 * @queue: Pointer to &struct data_queue from where we obtain the entry.
1186 * @index: Index identifier for obtaining the correct index.
1188 struct queue_entry
*rt2x00queue_get_entry(struct data_queue
*queue
,
1189 enum queue_index index
);
1192 * rt2x00queue_pause_queue - Pause a data queue
1193 * @queue: Pointer to &struct data_queue.
1195 * This function will pause the data queue locally, preventing
1196 * new frames to be added to the queue (while the hardware is
1197 * still allowed to run).
1199 void rt2x00queue_pause_queue(struct data_queue
*queue
);
1202 * rt2x00queue_unpause_queue - unpause a data queue
1203 * @queue: Pointer to &struct data_queue.
1205 * This function will unpause the data queue locally, allowing
1206 * new frames to be added to the queue again.
1208 void rt2x00queue_unpause_queue(struct data_queue
*queue
);
1211 * rt2x00queue_start_queue - Start a data queue
1212 * @queue: Pointer to &struct data_queue.
1214 * This function will start handling all pending frames in the queue.
1216 void rt2x00queue_start_queue(struct data_queue
*queue
);
1219 * rt2x00queue_stop_queue - Halt a data queue
1220 * @queue: Pointer to &struct data_queue.
1222 * This function will stop all pending frames in the queue.
1224 void rt2x00queue_stop_queue(struct data_queue
*queue
);
1227 * rt2x00queue_flush_queue - Flush a data queue
1228 * @queue: Pointer to &struct data_queue.
1229 * @drop: True to drop all pending frames.
1231 * This function will flush the queue. After this call
1232 * the queue is guaranteed to be empty.
1234 void rt2x00queue_flush_queue(struct data_queue
*queue
, bool drop
);
1237 * rt2x00queue_start_queues - Start all data queues
1238 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1240 * This function will loop through all available queues to start them
1242 void rt2x00queue_start_queues(struct rt2x00_dev
*rt2x00dev
);
1245 * rt2x00queue_stop_queues - Halt all data queues
1246 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1248 * This function will loop through all available queues to stop
1249 * any pending frames.
1251 void rt2x00queue_stop_queues(struct rt2x00_dev
*rt2x00dev
);
1254 * rt2x00queue_flush_queues - Flush all data queues
1255 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1256 * @drop: True to drop all pending frames.
1258 * This function will loop through all available queues to flush
1259 * any pending frames.
1261 void rt2x00queue_flush_queues(struct rt2x00_dev
*rt2x00dev
, bool drop
);
1267 * rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
1268 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1269 * @type: The type of frame that is being dumped.
1270 * @skb: The skb containing the frame to be dumped.
1272 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1273 void rt2x00debug_dump_frame(struct rt2x00_dev
*rt2x00dev
,
1274 enum rt2x00_dump_type type
, struct sk_buff
*skb
);
1276 static inline void rt2x00debug_dump_frame(struct rt2x00_dev
*rt2x00dev
,
1277 enum rt2x00_dump_type type
,
1278 struct sk_buff
*skb
)
1281 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1284 * Utility functions.
1286 u32
rt2x00lib_get_bssidx(struct rt2x00_dev
*rt2x00dev
,
1287 struct ieee80211_vif
*vif
);
1290 * Interrupt context handlers.
1292 void rt2x00lib_beacondone(struct rt2x00_dev
*rt2x00dev
);
1293 void rt2x00lib_pretbtt(struct rt2x00_dev
*rt2x00dev
);
1294 void rt2x00lib_dmastart(struct queue_entry
*entry
);
1295 void rt2x00lib_dmadone(struct queue_entry
*entry
);
1296 void rt2x00lib_txdone(struct queue_entry
*entry
,
1297 struct txdone_entry_desc
*txdesc
);
1298 void rt2x00lib_txdone_noinfo(struct queue_entry
*entry
, u32 status
);
1299 void rt2x00lib_rxdone(struct queue_entry
*entry
, gfp_t gfp
);
1302 * mac80211 handlers.
1304 void rt2x00mac_tx(struct ieee80211_hw
*hw
,
1305 struct ieee80211_tx_control
*control
,
1306 struct sk_buff
*skb
);
1307 int rt2x00mac_start(struct ieee80211_hw
*hw
);
1308 void rt2x00mac_stop(struct ieee80211_hw
*hw
);
1309 int rt2x00mac_add_interface(struct ieee80211_hw
*hw
,
1310 struct ieee80211_vif
*vif
);
1311 void rt2x00mac_remove_interface(struct ieee80211_hw
*hw
,
1312 struct ieee80211_vif
*vif
);
1313 int rt2x00mac_config(struct ieee80211_hw
*hw
, u32 changed
);
1314 void rt2x00mac_configure_filter(struct ieee80211_hw
*hw
,
1315 unsigned int changed_flags
,
1316 unsigned int *total_flags
,
1318 int rt2x00mac_set_tim(struct ieee80211_hw
*hw
, struct ieee80211_sta
*sta
,
1320 #ifdef CONFIG_RT2X00_LIB_CRYPTO
1321 int rt2x00mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
1322 struct ieee80211_vif
*vif
, struct ieee80211_sta
*sta
,
1323 struct ieee80211_key_conf
*key
);
1325 #define rt2x00mac_set_key NULL
1326 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
1327 int rt2x00mac_sta_add(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
1328 struct ieee80211_sta
*sta
);
1329 int rt2x00mac_sta_remove(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
1330 struct ieee80211_sta
*sta
);
1331 void rt2x00mac_sw_scan_start(struct ieee80211_hw
*hw
);
1332 void rt2x00mac_sw_scan_complete(struct ieee80211_hw
*hw
);
1333 int rt2x00mac_get_stats(struct ieee80211_hw
*hw
,
1334 struct ieee80211_low_level_stats
*stats
);
1335 void rt2x00mac_bss_info_changed(struct ieee80211_hw
*hw
,
1336 struct ieee80211_vif
*vif
,
1337 struct ieee80211_bss_conf
*bss_conf
,
1339 int rt2x00mac_conf_tx(struct ieee80211_hw
*hw
,
1340 struct ieee80211_vif
*vif
, u16 queue
,
1341 const struct ieee80211_tx_queue_params
*params
);
1342 void rt2x00mac_rfkill_poll(struct ieee80211_hw
*hw
);
1343 void rt2x00mac_flush(struct ieee80211_hw
*hw
, bool drop
);
1344 int rt2x00mac_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
);
1345 int rt2x00mac_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
);
1346 void rt2x00mac_get_ringparam(struct ieee80211_hw
*hw
,
1347 u32
*tx
, u32
*tx_max
, u32
*rx
, u32
*rx_max
);
1348 bool rt2x00mac_tx_frames_pending(struct ieee80211_hw
*hw
);
1351 * Driver allocation handlers.
1353 int rt2x00lib_probe_dev(struct rt2x00_dev
*rt2x00dev
);
1354 void rt2x00lib_remove_dev(struct rt2x00_dev
*rt2x00dev
);
1356 int rt2x00lib_suspend(struct rt2x00_dev
*rt2x00dev
, pm_message_t state
);
1357 int rt2x00lib_resume(struct rt2x00_dev
*rt2x00dev
);
1358 #endif /* CONFIG_PM */
1360 #endif /* RT2X00_H */