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 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_sta_intf
;
658 const unsigned int max_ap_intf
;
659 const unsigned int eeprom_size
;
660 const unsigned int rf_size
;
661 const unsigned int tx_queues
;
662 const unsigned int extra_tx_headroom
;
663 const struct data_queue_desc
*rx
;
664 const struct data_queue_desc
*tx
;
665 const struct data_queue_desc
*bcn
;
666 const struct data_queue_desc
*atim
;
667 const struct rt2x00lib_ops
*lib
;
669 const struct ieee80211_ops
*hw
;
670 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
671 const struct rt2x00debug
*debugfs
;
672 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
678 enum rt2x00_state_flags
{
682 DEVICE_STATE_PRESENT
,
683 DEVICE_STATE_REGISTERED_HW
,
684 DEVICE_STATE_INITIALIZED
,
685 DEVICE_STATE_STARTED
,
686 DEVICE_STATE_ENABLED_RADIO
,
687 DEVICE_STATE_SCANNING
,
690 * Driver configuration
698 * Mark we currently are sequentially reading TX_STA_FIFO register
699 * FIXME: this is for only rt2800usb, should go to private data
705 * rt2x00 capability flags
707 enum rt2x00_capability_flags
{
712 REQUIRE_BEACON_GUARD
,
717 REQUIRE_TXSTATUS_FIFO
,
718 REQUIRE_TASKLET_CONTEXT
,
726 CAPABILITY_HW_BUTTON
,
727 CAPABILITY_HW_CRYPTO
,
728 CAPABILITY_POWER_LIMIT
,
729 CAPABILITY_CONTROL_FILTERS
,
730 CAPABILITY_CONTROL_FILTER_PSPOLL
,
731 CAPABILITY_PRE_TBTT_INTERRUPT
,
732 CAPABILITY_LINK_TUNING
,
733 CAPABILITY_FRAME_TYPE
,
734 CAPABILITY_RF_SEQUENCE
,
735 CAPABILITY_EXTERNAL_LNA_A
,
736 CAPABILITY_EXTERNAL_LNA_BG
,
737 CAPABILITY_DOUBLE_ANTENNA
,
738 CAPABILITY_BT_COEXIST
,
739 CAPABILITY_VCO_RECALIBRATION
,
743 * rt2x00 device structure.
748 * The structure stored in here depends on the
749 * system bus (PCI or USB).
750 * When accessing this variable, the rt2x00dev_{pci,usb}
751 * macros should be used for correct typecasting.
756 * Callback functions.
758 const struct rt2x00_ops
*ops
;
766 * IEEE80211 control structure.
768 struct ieee80211_hw
*hw
;
769 struct ieee80211_supported_band bands
[IEEE80211_NUM_BANDS
];
770 enum ieee80211_band curr_band
;
774 * If enabled, the debugfs interface structures
775 * required for deregistration of debugfs.
777 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
778 struct rt2x00debug_intf
*debugfs_intf
;
779 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
782 * LED structure for changing the LED status
783 * by mac8011 or the kernel.
785 #ifdef CONFIG_RT2X00_LIB_LEDS
786 struct rt2x00_led led_radio
;
787 struct rt2x00_led led_assoc
;
788 struct rt2x00_led led_qual
;
790 #endif /* CONFIG_RT2X00_LIB_LEDS */
793 * Device state flags.
794 * In these flags the current status is stored.
795 * Access to these flags should occur atomically.
800 * Device capabiltiy flags.
801 * In these flags the device/driver capabilities are stored.
802 * Access to these flags should occur non-atomically.
804 unsigned long cap_flags
;
807 * Device information, Bus IRQ and name (PCI, SoC)
813 * Chipset identification.
815 struct rt2x00_chip chip
;
818 * hw capability specifications.
820 struct hw_mode_spec spec
;
823 * This is the default TX/RX antenna setup as indicated
824 * by the device's EEPROM.
826 struct antenna_setup default_ant
;
830 * csr.base: CSR base register address. (PCI)
831 * csr.cache: CSR cache for usb_control_msg. (USB)
839 * Mutex to protect register accesses.
840 * For PCI and USB devices it protects against concurrent indirect
841 * register access (BBP, RF, MCU) since accessing those
842 * registers require multiple calls to the CSR registers.
843 * For USB devices it also protects the csr_cache since that
844 * field is used for normal CSR access and it cannot support
845 * multiple callers simultaneously.
847 struct mutex csr_mutex
;
850 * Current packet filter configuration for the device.
851 * This contains all currently active FIF_* flags send
852 * to us by mac80211 during configure_filter().
854 unsigned int packet_filter
;
858 * - Open ap interface count.
859 * - Open sta interface count.
860 * - Association count.
861 * - Beaconing enabled count.
863 unsigned int intf_ap_count
;
864 unsigned int intf_sta_count
;
865 unsigned int intf_associated
;
866 unsigned int intf_beaconing
;
879 * Active RF register values.
880 * These are stored here so we don't need
881 * to read the rf registers and can directly
882 * use this value instead.
883 * This field should be accessed by using
884 * rt2x00_rf_read() and rt2x00_rf_write().
894 * Current TX power value.
899 * Current retry values.
905 * Rssi <-> Dbm offset
925 * Timestamp of last received beacon
927 unsigned long last_beacon
;
930 * Low level statistics which will have
931 * to be kept up to date while device is running.
933 struct ieee80211_low_level_stats low_level_stats
;
936 * Work queue for all work which should not be placed
937 * on the mac80211 workqueue (because of dependencies
938 * between various work structures).
940 struct workqueue_struct
*workqueue
;
944 * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
945 * which means it cannot be placed on the hw->workqueue
946 * due to RTNL locking requirements.
948 struct work_struct intf_work
;
951 * Scheduled work for TX/RX done handling (USB devices)
953 struct work_struct rxdone_work
;
954 struct work_struct txdone_work
;
959 struct delayed_work autowakeup_work
;
960 struct work_struct sleep_work
;
963 * Data queue arrays for RX, TX, Beacon and ATIM.
965 unsigned int data_queues
;
966 struct data_queue
*rx
;
967 struct data_queue
*tx
;
968 struct data_queue
*bcn
;
969 struct data_queue
*atim
;
974 const struct firmware
*fw
;
977 * FIFO for storing tx status reports between isr and tasklet.
979 DECLARE_KFIFO_PTR(txstatus_fifo
, u32
);
982 * Timer to ensure tx status reports are read (rt2800usb).
984 struct hrtimer txstatus_timer
;
987 * Tasklet for processing tx status reports (rt2800pci).
989 struct tasklet_struct txstatus_tasklet
;
990 struct tasklet_struct pretbtt_tasklet
;
991 struct tasklet_struct tbtt_tasklet
;
992 struct tasklet_struct rxdone_tasklet
;
993 struct tasklet_struct autowake_tasklet
;
996 * Used for VCO periodic calibration.
1001 * Protect the interrupt mask register.
1003 spinlock_t irqmask_lock
;
1008 * Some registers require multiple attempts before success,
1009 * in those cases REGISTER_BUSY_COUNT attempts should be
1010 * taken with a REGISTER_BUSY_DELAY interval.
1012 #define REGISTER_BUSY_COUNT 100
1013 #define REGISTER_BUSY_DELAY 100
1016 * Generic RF access.
1017 * The RF is being accessed by word index.
1019 static inline void rt2x00_rf_read(struct rt2x00_dev
*rt2x00dev
,
1020 const unsigned int word
, u32
*data
)
1022 BUG_ON(word
< 1 || word
> rt2x00dev
->ops
->rf_size
/ sizeof(u32
));
1023 *data
= rt2x00dev
->rf
[word
- 1];
1026 static inline void rt2x00_rf_write(struct rt2x00_dev
*rt2x00dev
,
1027 const unsigned int word
, u32 data
)
1029 BUG_ON(word
< 1 || word
> rt2x00dev
->ops
->rf_size
/ sizeof(u32
));
1030 rt2x00dev
->rf
[word
- 1] = data
;
1034 * Generic EEPROM access.
1035 * The EEPROM is being accessed by word index.
1037 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev
*rt2x00dev
,
1038 const unsigned int word
)
1040 return (void *)&rt2x00dev
->eeprom
[word
];
1043 static inline void rt2x00_eeprom_read(struct rt2x00_dev
*rt2x00dev
,
1044 const unsigned int word
, u16
*data
)
1046 *data
= le16_to_cpu(rt2x00dev
->eeprom
[word
]);
1049 static inline void rt2x00_eeprom_write(struct rt2x00_dev
*rt2x00dev
,
1050 const unsigned int word
, u16 data
)
1052 rt2x00dev
->eeprom
[word
] = cpu_to_le16(data
);
1058 static inline void rt2x00_set_chip(struct rt2x00_dev
*rt2x00dev
,
1059 const u16 rt
, const u16 rf
, const u16 rev
)
1061 rt2x00dev
->chip
.rt
= rt
;
1062 rt2x00dev
->chip
.rf
= rf
;
1063 rt2x00dev
->chip
.rev
= rev
;
1066 "Chipset detected - rt: %04x, rf: %04x, rev: %04x.\n",
1067 rt2x00dev
->chip
.rt
, rt2x00dev
->chip
.rf
, rt2x00dev
->chip
.rev
);
1070 static inline bool rt2x00_rt(struct rt2x00_dev
*rt2x00dev
, const u16 rt
)
1072 return (rt2x00dev
->chip
.rt
== rt
);
1075 static inline bool rt2x00_rf(struct rt2x00_dev
*rt2x00dev
, const u16 rf
)
1077 return (rt2x00dev
->chip
.rf
== rf
);
1080 static inline u16
rt2x00_rev(struct rt2x00_dev
*rt2x00dev
)
1082 return rt2x00dev
->chip
.rev
;
1085 static inline bool rt2x00_rt_rev(struct rt2x00_dev
*rt2x00dev
,
1086 const u16 rt
, const u16 rev
)
1088 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) == rev
);
1091 static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev
*rt2x00dev
,
1092 const u16 rt
, const u16 rev
)
1094 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) < rev
);
1097 static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev
*rt2x00dev
,
1098 const u16 rt
, const u16 rev
)
1100 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) >= rev
);
1103 static inline void rt2x00_set_chip_intf(struct rt2x00_dev
*rt2x00dev
,
1104 enum rt2x00_chip_intf intf
)
1106 rt2x00dev
->chip
.intf
= intf
;
1109 static inline bool rt2x00_intf(struct rt2x00_dev
*rt2x00dev
,
1110 enum rt2x00_chip_intf intf
)
1112 return (rt2x00dev
->chip
.intf
== intf
);
1115 static inline bool rt2x00_is_pci(struct rt2x00_dev
*rt2x00dev
)
1117 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCI
) ||
1118 rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCIE
);
1121 static inline bool rt2x00_is_pcie(struct rt2x00_dev
*rt2x00dev
)
1123 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCIE
);
1126 static inline bool rt2x00_is_usb(struct rt2x00_dev
*rt2x00dev
)
1128 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_USB
);
1131 static inline bool rt2x00_is_soc(struct rt2x00_dev
*rt2x00dev
)
1133 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_SOC
);
1137 * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
1138 * @entry: Pointer to &struct queue_entry
1140 void rt2x00queue_map_txskb(struct queue_entry
*entry
);
1143 * rt2x00queue_unmap_skb - Unmap a skb from DMA.
1144 * @entry: Pointer to &struct queue_entry
1146 void rt2x00queue_unmap_skb(struct queue_entry
*entry
);
1149 * rt2x00queue_get_tx_queue - Convert tx queue index to queue pointer
1150 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1151 * @queue: rt2x00 queue index (see &enum data_queue_qid).
1153 * Returns NULL for non tx queues.
1155 static inline struct data_queue
*
1156 rt2x00queue_get_tx_queue(struct rt2x00_dev
*rt2x00dev
,
1157 const enum data_queue_qid queue
)
1159 if (queue
< rt2x00dev
->ops
->tx_queues
&& rt2x00dev
->tx
)
1160 return &rt2x00dev
->tx
[queue
];
1162 if (queue
== QID_ATIM
)
1163 return rt2x00dev
->atim
;
1169 * rt2x00queue_get_entry - Get queue entry where the given index points to.
1170 * @queue: Pointer to &struct data_queue from where we obtain the entry.
1171 * @index: Index identifier for obtaining the correct index.
1173 struct queue_entry
*rt2x00queue_get_entry(struct data_queue
*queue
,
1174 enum queue_index index
);
1177 * rt2x00queue_pause_queue - Pause a data queue
1178 * @queue: Pointer to &struct data_queue.
1180 * This function will pause the data queue locally, preventing
1181 * new frames to be added to the queue (while the hardware is
1182 * still allowed to run).
1184 void rt2x00queue_pause_queue(struct data_queue
*queue
);
1187 * rt2x00queue_unpause_queue - unpause a data queue
1188 * @queue: Pointer to &struct data_queue.
1190 * This function will unpause the data queue locally, allowing
1191 * new frames to be added to the queue again.
1193 void rt2x00queue_unpause_queue(struct data_queue
*queue
);
1196 * rt2x00queue_start_queue - Start a data queue
1197 * @queue: Pointer to &struct data_queue.
1199 * This function will start handling all pending frames in the queue.
1201 void rt2x00queue_start_queue(struct data_queue
*queue
);
1204 * rt2x00queue_stop_queue - Halt a data queue
1205 * @queue: Pointer to &struct data_queue.
1207 * This function will stop all pending frames in the queue.
1209 void rt2x00queue_stop_queue(struct data_queue
*queue
);
1212 * rt2x00queue_flush_queue - Flush a data queue
1213 * @queue: Pointer to &struct data_queue.
1214 * @drop: True to drop all pending frames.
1216 * This function will flush the queue. After this call
1217 * the queue is guaranteed to be empty.
1219 void rt2x00queue_flush_queue(struct data_queue
*queue
, bool drop
);
1222 * rt2x00queue_start_queues - Start all data queues
1223 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1225 * This function will loop through all available queues to start them
1227 void rt2x00queue_start_queues(struct rt2x00_dev
*rt2x00dev
);
1230 * rt2x00queue_stop_queues - Halt all data queues
1231 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1233 * This function will loop through all available queues to stop
1234 * any pending frames.
1236 void rt2x00queue_stop_queues(struct rt2x00_dev
*rt2x00dev
);
1239 * rt2x00queue_flush_queues - Flush all data queues
1240 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1241 * @drop: True to drop all pending frames.
1243 * This function will loop through all available queues to flush
1244 * any pending frames.
1246 void rt2x00queue_flush_queues(struct rt2x00_dev
*rt2x00dev
, bool drop
);
1252 * rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
1253 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1254 * @type: The type of frame that is being dumped.
1255 * @skb: The skb containing the frame to be dumped.
1257 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1258 void rt2x00debug_dump_frame(struct rt2x00_dev
*rt2x00dev
,
1259 enum rt2x00_dump_type type
, struct sk_buff
*skb
);
1261 static inline void rt2x00debug_dump_frame(struct rt2x00_dev
*rt2x00dev
,
1262 enum rt2x00_dump_type type
,
1263 struct sk_buff
*skb
)
1266 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1269 * Utility functions.
1271 u32
rt2x00lib_get_bssidx(struct rt2x00_dev
*rt2x00dev
,
1272 struct ieee80211_vif
*vif
);
1275 * Interrupt context handlers.
1277 void rt2x00lib_beacondone(struct rt2x00_dev
*rt2x00dev
);
1278 void rt2x00lib_pretbtt(struct rt2x00_dev
*rt2x00dev
);
1279 void rt2x00lib_dmastart(struct queue_entry
*entry
);
1280 void rt2x00lib_dmadone(struct queue_entry
*entry
);
1281 void rt2x00lib_txdone(struct queue_entry
*entry
,
1282 struct txdone_entry_desc
*txdesc
);
1283 void rt2x00lib_txdone_noinfo(struct queue_entry
*entry
, u32 status
);
1284 void rt2x00lib_rxdone(struct queue_entry
*entry
, gfp_t gfp
);
1287 * mac80211 handlers.
1289 void rt2x00mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
);
1290 int rt2x00mac_start(struct ieee80211_hw
*hw
);
1291 void rt2x00mac_stop(struct ieee80211_hw
*hw
);
1292 int rt2x00mac_add_interface(struct ieee80211_hw
*hw
,
1293 struct ieee80211_vif
*vif
);
1294 void rt2x00mac_remove_interface(struct ieee80211_hw
*hw
,
1295 struct ieee80211_vif
*vif
);
1296 int rt2x00mac_config(struct ieee80211_hw
*hw
, u32 changed
);
1297 void rt2x00mac_configure_filter(struct ieee80211_hw
*hw
,
1298 unsigned int changed_flags
,
1299 unsigned int *total_flags
,
1301 int rt2x00mac_set_tim(struct ieee80211_hw
*hw
, struct ieee80211_sta
*sta
,
1303 #ifdef CONFIG_RT2X00_LIB_CRYPTO
1304 int rt2x00mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
1305 struct ieee80211_vif
*vif
, struct ieee80211_sta
*sta
,
1306 struct ieee80211_key_conf
*key
);
1308 #define rt2x00mac_set_key NULL
1309 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
1310 int rt2x00mac_sta_add(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
1311 struct ieee80211_sta
*sta
);
1312 int rt2x00mac_sta_remove(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
1313 struct ieee80211_sta
*sta
);
1314 void rt2x00mac_sw_scan_start(struct ieee80211_hw
*hw
);
1315 void rt2x00mac_sw_scan_complete(struct ieee80211_hw
*hw
);
1316 int rt2x00mac_get_stats(struct ieee80211_hw
*hw
,
1317 struct ieee80211_low_level_stats
*stats
);
1318 void rt2x00mac_bss_info_changed(struct ieee80211_hw
*hw
,
1319 struct ieee80211_vif
*vif
,
1320 struct ieee80211_bss_conf
*bss_conf
,
1322 int rt2x00mac_conf_tx(struct ieee80211_hw
*hw
,
1323 struct ieee80211_vif
*vif
, u16 queue
,
1324 const struct ieee80211_tx_queue_params
*params
);
1325 void rt2x00mac_rfkill_poll(struct ieee80211_hw
*hw
);
1326 void rt2x00mac_flush(struct ieee80211_hw
*hw
, bool drop
);
1327 int rt2x00mac_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
);
1328 int rt2x00mac_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
);
1329 void rt2x00mac_get_ringparam(struct ieee80211_hw
*hw
,
1330 u32
*tx
, u32
*tx_max
, u32
*rx
, u32
*rx_max
);
1331 bool rt2x00mac_tx_frames_pending(struct ieee80211_hw
*hw
);
1334 * Driver allocation handlers.
1336 int rt2x00lib_probe_dev(struct rt2x00_dev
*rt2x00dev
);
1337 void rt2x00lib_remove_dev(struct rt2x00_dev
*rt2x00dev
);
1339 int rt2x00lib_suspend(struct rt2x00_dev
*rt2x00dev
, pm_message_t state
);
1340 int rt2x00lib_resume(struct rt2x00_dev
*rt2x00dev
);
1341 #endif /* CONFIG_PM */
1343 #endif /* RT2X00_H */