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 "2.1.4"
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 * IEEE802.11 header defines
116 static inline int is_rts_frame(u16 fc
)
118 return (((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
) &&
119 ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_RTS
));
122 static inline int is_cts_frame(u16 fc
)
124 return (((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
) &&
125 ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_CTS
));
128 static inline int is_probe_resp(u16 fc
)
130 return (((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) &&
131 ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
));
134 static inline int is_beacon(u16 fc
)
136 return (((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) &&
137 ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
));
141 * Chipset identification
142 * The chipset on the device is composed of a RT and RF chip.
143 * The chipset combination is important for determining device capabilities.
147 #define RT2460 0x0101
148 #define RT2560 0x0201
149 #define RT2570 0x1201
150 #define RT2561s 0x0301 /* Turbo */
151 #define RT2561 0x0302
152 #define RT2661 0x0401
153 #define RT2571 0x1300
160 * RF register values that belong to a particular channel.
171 * Antenna setup values.
173 struct antenna_setup
{
179 * Quality statistics about the currently active link.
183 * Statistics required for Link tuning.
184 * For the average RSSI value we use the "Walking average" approach.
185 * When adding RSSI to the average value the following calculation
188 * avg_rssi = ((avg_rssi * 7) + rssi) / 8;
190 * The advantage of this approach is that we only need 1 variable
191 * to store the average in (No need for a count and a total).
192 * But more importantly, normal average values will over time
193 * move less and less towards newly added values this results
194 * that with link tuning, the device can have a very good RSSI
195 * for a few minutes but when the device is moved away from the AP
196 * the average will not decrease fast enough to compensate.
197 * The walking average compensates this and will move towards
198 * the new values correctly allowing a effective link tuning.
204 * Statistics required for Signal quality calculation.
205 * For calculating the Signal quality we have to determine
206 * the total number of success and failed RX and TX frames.
207 * After that we also use the average RSSI value to help
208 * determining the signal quality.
209 * For the calculation we will use the following algorithm:
211 * rssi_percentage = (avg_rssi * 100) / rssi_offset
212 * rx_percentage = (rx_success * 100) / rx_total
213 * tx_percentage = (tx_success * 100) / tx_total
214 * avg_signal = ((WEIGHT_RSSI * avg_rssi) +
215 * (WEIGHT_TX * tx_percentage) +
216 * (WEIGHT_RX * rx_percentage)) / 100
218 * This value should then be checked to not be greated then 100.
226 #define WEIGHT_RSSI 20
232 * Antenna settings about the currently active link.
239 #define ANTENNA_RX_DIVERSITY 0x00000001
240 #define ANTENNA_TX_DIVERSITY 0x00000002
241 #define ANTENNA_MODE_SAMPLE 0x00000004
244 * Currently active TX/RX antenna setup.
245 * When software diversity is used, this will indicate
246 * which antenna is actually used at this time.
248 struct antenna_setup active
;
251 * RSSI information for the different antenna's.
252 * These statistics are used to determine when
253 * to switch antenna when using software diversity.
255 * rssi[0] -> Antenna A RSSI
256 * rssi[1] -> Antenna B RSSI
261 * Current RSSI average of the currently active antenna.
262 * Similar to the avg_rssi in the link_qual structure
263 * this value is updated by using the walking average.
269 * To optimize the quality of the link we need to store
270 * the quality of received frames and periodically
276 * The number of times the link has been tuned
277 * since the radio has been switched on.
282 * Quality measurement values.
284 struct link_qual qual
;
287 * TX/RX antenna setup.
297 * Work structure for scheduling periodic link tuning.
299 struct delayed_work work
;
303 * Small helper macro to work with moving/walking averages.
305 #define MOVING_AVERAGE(__avg, __val, __samples) \
306 ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) )
309 * When we lack RSSI information return something less then -80 to
310 * tell the driver to tune the device to maximum sensitivity.
312 #define DEFAULT_RSSI ( -128 )
315 * Link quality access functions.
317 static inline int rt2x00_get_link_rssi(struct link
*link
)
319 if (link
->qual
.avg_rssi
&& link
->qual
.rx_success
)
320 return link
->qual
.avg_rssi
;
324 static inline int rt2x00_get_link_ant_rssi(struct link
*link
)
326 if (link
->ant
.rssi_ant
&& link
->qual
.rx_success
)
327 return link
->ant
.rssi_ant
;
331 static inline void rt2x00_reset_link_ant_rssi(struct link
*link
)
333 link
->ant
.rssi_ant
= 0;
336 static inline int rt2x00_get_link_ant_rssi_history(struct link
*link
,
339 if (link
->ant
.rssi_history
[ant
- ANTENNA_A
])
340 return link
->ant
.rssi_history
[ant
- ANTENNA_A
];
344 static inline int rt2x00_update_ant_rssi(struct link
*link
, int rssi
)
346 int old_rssi
= link
->ant
.rssi_history
[link
->ant
.active
.rx
- ANTENNA_A
];
347 link
->ant
.rssi_history
[link
->ant
.active
.rx
- ANTENNA_A
] = rssi
;
352 * Interface structure
353 * Per interface configuration details, this structure
354 * is allocated as the private data for ieee80211_vif.
358 * All fields within the rt2x00_intf structure
359 * must be protected with a spinlock.
364 * BSS configuration. Copied from the structure
365 * passed to us through the bss_info_changed()
368 struct ieee80211_bss_conf conf
;
376 * BBSID of the AP to associate with.
381 * Entry in the beacon queue which belongs to
382 * this interface. Each interface has its own
383 * dedicated beacon entry.
385 struct queue_entry
*beacon
;
388 * Actions that needed rescheduling.
390 unsigned int delayed_flags
;
391 #define DELAYED_UPDATE_BEACON 0x00000001
392 #define DELAYED_CONFIG_ERP 0x00000002
393 #define DELAYED_LED_ASSOC 0x00000004
396 static inline struct rt2x00_intf
* vif_to_intf(struct ieee80211_vif
*vif
)
398 return (struct rt2x00_intf
*)vif
->drv_priv
;
402 * struct hw_mode_spec: Hardware specifications structure
404 * Details about the supported modes, rates and channels
405 * of a particular chipset. This is used by rt2x00lib
406 * to build the ieee80211_hw_mode array for mac80211.
408 * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
409 * @supported_rates: Rate types which are supported (CCK, OFDM).
410 * @num_channels: Number of supported channels. This is used as array size
411 * for @tx_power_a, @tx_power_bg and @channels.
412 * channels: Device/chipset specific channel values (See &struct rf_channel).
413 * @tx_power_a: TX power values for all 5.2GHz channels (may be NULL).
414 * @tx_power_bg: TX power values for all 2.4GHz channels (may be NULL).
415 * @tx_power_default: Default TX power value to use when either
416 * @tx_power_a or @tx_power_bg is missing.
418 struct hw_mode_spec
{
419 unsigned int supported_bands
;
420 #define SUPPORT_BAND_2GHZ 0x00000001
421 #define SUPPORT_BAND_5GHZ 0x00000002
423 unsigned int supported_rates
;
424 #define SUPPORT_RATE_CCK 0x00000001
425 #define SUPPORT_RATE_OFDM 0x00000002
427 unsigned int num_channels
;
428 const struct rf_channel
*channels
;
430 const u8
*tx_power_a
;
431 const u8
*tx_power_bg
;
436 * Configuration structure wrapper around the
437 * mac80211 configuration structure.
438 * When mac80211 configures the driver, rt2x00lib
439 * can precalculate values which are equal for all
440 * rt2x00 drivers. Those values can be stored in here.
442 struct rt2x00lib_conf
{
443 struct ieee80211_conf
*conf
;
444 struct rf_channel rf
;
446 struct antenna_setup ant
;
448 enum ieee80211_band band
;
460 * Configuration structure for erp settings.
462 struct rt2x00lib_erp
{
466 int ack_consume_time
;
470 * Configuration structure wrapper around the
471 * rt2x00 interface configuration handler.
473 struct rt2x00intf_conf
{
477 enum ieee80211_if_types type
;
480 * TSF sync value, this is dependant on the operation type.
485 * The MAC and BSSID addressess are simple array of bytes,
486 * these arrays are little endian, so when sending the addressess
487 * to the drivers, copy the it into a endian-signed variable.
489 * Note that all devices (except rt2500usb) have 32 bits
490 * register word sizes. This means that whatever variable we
491 * pass _must_ be a multiple of 32 bits. Otherwise the device
492 * might not accept what we are sending to it.
493 * This will also make it easier for the driver to write
494 * the data to the device.
501 * rt2x00lib callback functions.
503 struct rt2x00lib_ops
{
505 * Interrupt handlers.
507 irq_handler_t irq_handler
;
510 * Device init handlers.
512 int (*probe_hw
) (struct rt2x00_dev
*rt2x00dev
);
513 char *(*get_firmware_name
) (struct rt2x00_dev
*rt2x00dev
);
514 u16 (*get_firmware_crc
) (const void *data
, const size_t len
);
515 int (*load_firmware
) (struct rt2x00_dev
*rt2x00dev
, const void *data
,
519 * Device initialization/deinitialization handlers.
521 int (*initialize
) (struct rt2x00_dev
*rt2x00dev
);
522 void (*uninitialize
) (struct rt2x00_dev
*rt2x00dev
);
525 * queue initialization handlers
527 void (*init_rxentry
) (struct rt2x00_dev
*rt2x00dev
,
528 struct queue_entry
*entry
);
529 void (*init_txentry
) (struct rt2x00_dev
*rt2x00dev
,
530 struct queue_entry
*entry
);
533 * Radio control handlers.
535 int (*set_device_state
) (struct rt2x00_dev
*rt2x00dev
,
536 enum dev_state state
);
537 int (*rfkill_poll
) (struct rt2x00_dev
*rt2x00dev
);
538 void (*link_stats
) (struct rt2x00_dev
*rt2x00dev
,
539 struct link_qual
*qual
);
540 void (*reset_tuner
) (struct rt2x00_dev
*rt2x00dev
);
541 void (*link_tuner
) (struct rt2x00_dev
*rt2x00dev
);
544 * TX control handlers
546 void (*write_tx_desc
) (struct rt2x00_dev
*rt2x00dev
,
548 struct txentry_desc
*txdesc
,
549 struct ieee80211_tx_control
*control
);
550 int (*write_tx_data
) (struct rt2x00_dev
*rt2x00dev
,
551 struct data_queue
*queue
, struct sk_buff
*skb
,
552 struct ieee80211_tx_control
*control
);
553 int (*get_tx_data_len
) (struct rt2x00_dev
*rt2x00dev
,
554 struct sk_buff
*skb
);
555 void (*kick_tx_queue
) (struct rt2x00_dev
*rt2x00dev
,
556 const unsigned int queue
);
559 * RX control handlers
561 void (*fill_rxdone
) (struct queue_entry
*entry
,
562 struct rxdone_entry_desc
*rxdesc
);
565 * Configuration handlers.
567 void (*config_filter
) (struct rt2x00_dev
*rt2x00dev
,
568 const unsigned int filter_flags
);
569 void (*config_intf
) (struct rt2x00_dev
*rt2x00dev
,
570 struct rt2x00_intf
*intf
,
571 struct rt2x00intf_conf
*conf
,
572 const unsigned int flags
);
573 #define CONFIG_UPDATE_TYPE ( 1 << 1 )
574 #define CONFIG_UPDATE_MAC ( 1 << 2 )
575 #define CONFIG_UPDATE_BSSID ( 1 << 3 )
577 void (*config_erp
) (struct rt2x00_dev
*rt2x00dev
,
578 struct rt2x00lib_erp
*erp
);
579 void (*config
) (struct rt2x00_dev
*rt2x00dev
,
580 struct rt2x00lib_conf
*libconf
,
581 const unsigned int flags
);
582 #define CONFIG_UPDATE_PHYMODE ( 1 << 1 )
583 #define CONFIG_UPDATE_CHANNEL ( 1 << 2 )
584 #define CONFIG_UPDATE_TXPOWER ( 1 << 3 )
585 #define CONFIG_UPDATE_ANTENNA ( 1 << 4 )
586 #define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 )
587 #define CONFIG_UPDATE_BEACON_INT ( 1 << 6 )
588 #define CONFIG_UPDATE_ALL 0xffff
592 * rt2x00 driver callback operation structure.
596 const unsigned int max_sta_intf
;
597 const unsigned int max_ap_intf
;
598 const unsigned int eeprom_size
;
599 const unsigned int rf_size
;
600 const struct data_queue_desc
*rx
;
601 const struct data_queue_desc
*tx
;
602 const struct data_queue_desc
*bcn
;
603 const struct data_queue_desc
*atim
;
604 const struct rt2x00lib_ops
*lib
;
605 const struct ieee80211_ops
*hw
;
606 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
607 const struct rt2x00debug
*debugfs
;
608 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
612 * rt2x00 device flags
619 DEVICE_REGISTERED_HW
,
622 DEVICE_STARTED_SUSPEND
,
623 DEVICE_ENABLED_RADIO
,
624 DEVICE_DISABLED_RADIO_HW
,
629 DRIVER_SUPPORT_MIXED_INTERFACES
,
630 DRIVER_REQUIRE_FIRMWARE
,
631 DRIVER_REQUIRE_BEACON_GUARD
,
632 DRIVER_REQUIRE_ATIM_QUEUE
,
633 DRIVER_REQUIRE_SCHEDULED
,
636 * Driver configuration
638 CONFIG_SUPPORT_HW_BUTTON
,
641 CONFIG_EXTERNAL_LNA_A
,
642 CONFIG_EXTERNAL_LNA_BG
,
643 CONFIG_DOUBLE_ANTENNA
,
644 CONFIG_DISABLE_LINK_TUNING
,
648 * rt2x00 device structure.
653 * The structure stored in here depends on the
654 * system bus (PCI or USB).
655 * When accessing this variable, the rt2x00dev_{pci,usb}
656 * macro's should be used for correct typecasting.
659 #define rt2x00dev_pci(__dev) ( (struct pci_dev *)(__dev)->dev )
660 #define rt2x00dev_usb(__dev) ( (struct usb_interface *)(__dev)->dev )
661 #define rt2x00dev_usb_dev(__dev)\
662 ( (struct usb_device *)interface_to_usbdev(rt2x00dev_usb(__dev)) )
665 * Callback functions.
667 const struct rt2x00_ops
*ops
;
670 * IEEE80211 control structure.
672 struct ieee80211_hw
*hw
;
673 struct ieee80211_supported_band bands
[IEEE80211_NUM_BANDS
];
674 enum ieee80211_band curr_band
;
677 * rfkill structure for RF state switching support.
678 * This will only be compiled in when required.
680 #ifdef CONFIG_RT2X00_LIB_RFKILL
681 unsigned long rfkill_state
;
682 #define RFKILL_STATE_ALLOCATED 1
683 #define RFKILL_STATE_REGISTERED 2
684 struct rfkill
*rfkill
;
685 struct input_polled_dev
*poll_dev
;
686 #endif /* CONFIG_RT2X00_LIB_RFKILL */
689 * If enabled, the debugfs interface structures
690 * required for deregistration of debugfs.
692 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
693 struct rt2x00debug_intf
*debugfs_intf
;
694 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
697 * LED structure for changing the LED status
698 * by mac8011 or the kernel.
700 #ifdef CONFIG_RT2X00_LIB_LEDS
701 struct rt2x00_led led_radio
;
702 struct rt2x00_led led_assoc
;
703 struct rt2x00_led led_qual
;
705 #endif /* CONFIG_RT2X00_LIB_LEDS */
709 * In these flags the current status and some
710 * of the device capabilities are stored.
715 * Chipset identification.
717 struct rt2x00_chip chip
;
720 * hw capability specifications.
722 struct hw_mode_spec spec
;
725 * This is the default TX/RX antenna setup as indicated
726 * by the device's EEPROM. When mac80211 sets its
727 * antenna value to 0 we should be using these values.
729 struct antenna_setup default_ant
;
733 * csr.base: CSR base register address. (PCI)
734 * csr.cache: CSR cache for usb_control_msg. (USB)
742 * Mutex to protect register accesses on USB devices.
743 * There are 2 reasons this is needed, one is to ensure
744 * use of the csr_cache (for USB devices) by one thread
745 * isn't corrupted by another thread trying to access it.
746 * The other is that access to BBP and RF registers
747 * require multiple BUS transactions and if another thread
748 * attempted to access one of those registers at the same
749 * time one of the writes could silently fail.
751 struct mutex usb_cache_mutex
;
754 * Current packet filter configuration for the device.
755 * This contains all currently active FIF_* flags send
756 * to us by mac80211 during configure_filter().
758 unsigned int packet_filter
;
762 * - Open ap interface count.
763 * - Open sta interface count.
764 * - Association count.
766 unsigned int intf_ap_count
;
767 unsigned int intf_sta_count
;
768 unsigned int intf_associated
;
781 * Active RF register values.
782 * These are stored here so we don't need
783 * to read the rf registers and can directly
784 * use this value instead.
785 * This field should be accessed by using
786 * rt2x00_rf_read() and rt2x00_rf_write().
791 * USB Max frame size (for rt2500usb & rt73usb).
796 * Current TX power value.
801 * Rssi <-> Dbm offset
806 * Frequency offset (for rt61pci & rt73usb).
811 * Low level statistics which will have
812 * to be kept up to date while device is running.
814 struct ieee80211_low_level_stats low_level_stats
;
817 * RX configuration information.
819 struct ieee80211_rx_status rx_status
;
824 struct workqueue_struct
*workqueue
;
825 struct work_struct intf_work
;
826 struct work_struct filter_work
;
829 * Data queue arrays for RX, TX and Beacon.
830 * The Beacon array also contains the Atim queue
831 * if that is supported by the device.
834 struct data_queue
*rx
;
835 struct data_queue
*tx
;
836 struct data_queue
*bcn
;
841 const struct firmware
*fw
;
846 * The RF is being accessed by word index.
848 static inline void rt2x00_rf_read(struct rt2x00_dev
*rt2x00dev
,
849 const unsigned int word
, u32
*data
)
851 *data
= rt2x00dev
->rf
[word
];
854 static inline void rt2x00_rf_write(struct rt2x00_dev
*rt2x00dev
,
855 const unsigned int word
, u32 data
)
857 rt2x00dev
->rf
[word
] = data
;
861 * Generic EEPROM access.
862 * The EEPROM is being accessed by word index.
864 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev
*rt2x00dev
,
865 const unsigned int word
)
867 return (void *)&rt2x00dev
->eeprom
[word
];
870 static inline void rt2x00_eeprom_read(struct rt2x00_dev
*rt2x00dev
,
871 const unsigned int word
, u16
*data
)
873 *data
= le16_to_cpu(rt2x00dev
->eeprom
[word
]);
876 static inline void rt2x00_eeprom_write(struct rt2x00_dev
*rt2x00dev
,
877 const unsigned int word
, u16 data
)
879 rt2x00dev
->eeprom
[word
] = cpu_to_le16(data
);
885 static inline void rt2x00_set_chip(struct rt2x00_dev
*rt2x00dev
,
886 const u16 rt
, const u16 rf
, const u32 rev
)
889 "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n",
892 rt2x00dev
->chip
.rt
= rt
;
893 rt2x00dev
->chip
.rf
= rf
;
894 rt2x00dev
->chip
.rev
= rev
;
897 static inline char rt2x00_rt(const struct rt2x00_chip
*chipset
, const u16 chip
)
899 return (chipset
->rt
== chip
);
902 static inline char rt2x00_rf(const struct rt2x00_chip
*chipset
, const u16 chip
)
904 return (chipset
->rf
== chip
);
907 static inline u16
rt2x00_rev(const struct rt2x00_chip
*chipset
)
912 static inline u16
rt2x00_check_rev(const struct rt2x00_chip
*chipset
,
915 return (((chipset
->rev
& 0xffff0) == rev
) &&
916 !!(chipset
->rev
& 0x0000f));
920 * Duration calculations
921 * The rate variable passed is: 100kbs.
922 * To convert from bytes to bits we multiply size with 8,
923 * then the size is multiplied with 10 to make the
924 * real rate -> rate argument correction.
926 static inline u16
get_duration(const unsigned int size
, const u8 rate
)
928 return ((size
* 8 * 10) / rate
);
931 static inline u16
get_duration_res(const unsigned int size
, const u8 rate
)
933 return ((size
* 8 * 10) % rate
);
937 * rt2x00queue_get_queue - Convert mac80211 queue index to rt2x00 queue
938 * @rt2x00dev: Pointer to &struct rt2x00_dev.
939 * @queue: mac80211/rt2x00 queue index
940 * (see &enum ieee80211_tx_queue and &enum rt2x00_bcn_queue).
942 struct data_queue
*rt2x00queue_get_queue(struct rt2x00_dev
*rt2x00dev
,
943 const unsigned int queue
);
946 * rt2x00queue_get_entry - Get queue entry where the given index points to.
947 * @rt2x00dev: Pointer to &struct rt2x00_dev.
948 * @index: Index identifier for obtaining the correct index.
950 struct queue_entry
*rt2x00queue_get_entry(struct data_queue
*queue
,
951 enum queue_index index
);
954 * rt2x00queue_index_inc - Index incrementation function
955 * @queue: Queue (&struct data_queue) to perform the action on.
956 * @action: Index type (&enum queue_index) to perform the action on.
958 * This function will increase the requested index on the queue,
959 * it will grab the appropriate locks and handle queue overflow events by
960 * resetting the index to the start of the queue.
962 void rt2x00queue_index_inc(struct data_queue
*queue
, enum queue_index index
);
966 * Interrupt context handlers.
968 void rt2x00lib_beacondone(struct rt2x00_dev
*rt2x00dev
);
969 void rt2x00lib_txdone(struct queue_entry
*entry
,
970 struct txdone_entry_desc
*txdesc
);
971 void rt2x00lib_rxdone(struct queue_entry
*entry
,
972 struct rxdone_entry_desc
*rxdesc
);
975 * TX descriptor initializer
977 void rt2x00lib_write_tx_desc(struct rt2x00_dev
*rt2x00dev
,
979 struct ieee80211_tx_control
*control
);
984 int rt2x00mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
985 struct ieee80211_tx_control
*control
);
986 int rt2x00mac_start(struct ieee80211_hw
*hw
);
987 void rt2x00mac_stop(struct ieee80211_hw
*hw
);
988 int rt2x00mac_add_interface(struct ieee80211_hw
*hw
,
989 struct ieee80211_if_init_conf
*conf
);
990 void rt2x00mac_remove_interface(struct ieee80211_hw
*hw
,
991 struct ieee80211_if_init_conf
*conf
);
992 int rt2x00mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
);
993 int rt2x00mac_config_interface(struct ieee80211_hw
*hw
,
994 struct ieee80211_vif
*vif
,
995 struct ieee80211_if_conf
*conf
);
996 void rt2x00mac_configure_filter(struct ieee80211_hw
*hw
,
997 unsigned int changed_flags
,
998 unsigned int *total_flags
,
999 int mc_count
, struct dev_addr_list
*mc_list
);
1000 int rt2x00mac_get_stats(struct ieee80211_hw
*hw
,
1001 struct ieee80211_low_level_stats
*stats
);
1002 int rt2x00mac_get_tx_stats(struct ieee80211_hw
*hw
,
1003 struct ieee80211_tx_queue_stats
*stats
);
1004 void rt2x00mac_bss_info_changed(struct ieee80211_hw
*hw
,
1005 struct ieee80211_vif
*vif
,
1006 struct ieee80211_bss_conf
*bss_conf
,
1008 int rt2x00mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
1009 const struct ieee80211_tx_queue_params
*params
);
1012 * Driver allocation handlers.
1014 int rt2x00lib_probe_dev(struct rt2x00_dev
*rt2x00dev
);
1015 void rt2x00lib_remove_dev(struct rt2x00_dev
*rt2x00dev
);
1017 int rt2x00lib_suspend(struct rt2x00_dev
*rt2x00dev
, pm_message_t state
);
1018 int rt2x00lib_resume(struct rt2x00_dev
*rt2x00dev
);
1019 #endif /* CONFIG_PM */
1021 #endif /* RT2X00_H */