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/skbuff.h>
33 #include <linux/workqueue.h>
34 #include <linux/firmware.h>
35 #include <linux/leds.h>
36 #include <linux/mutex.h>
37 #include <linux/etherdevice.h>
38 #include <linux/input-polldev.h>
39 #include <linux/kfifo.h>
41 #include <net/mac80211.h>
43 #include "rt2x00debug.h"
44 #include "rt2x00dump.h"
45 #include "rt2x00leds.h"
46 #include "rt2x00reg.h"
47 #include "rt2x00queue.h"
52 #define DRV_VERSION "2.3.0"
53 #define DRV_PROJECT "http://rt2x00.serialmonkey.com"
57 * Debug output has to be enabled during compile time.
59 #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \
60 printk(__kernlvl "%s -> %s: %s - " __msg, \
61 wiphy_name((__dev)->hw->wiphy), __func__, __lvl, ##__args)
63 #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \
64 printk(__kernlvl "%s -> %s: %s - " __msg, \
65 KBUILD_MODNAME, __func__, __lvl, ##__args)
67 #ifdef CONFIG_RT2X00_DEBUG
68 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
69 DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args)
71 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
73 #endif /* CONFIG_RT2X00_DEBUG */
76 * Various debug levels.
77 * The debug levels PANIC and ERROR both indicate serious problems,
78 * for this reason they should never be ignored.
79 * The special ERROR_PROBE message is for messages that are generated
80 * when the rt2x00_dev is not yet initialized.
82 #define PANIC(__dev, __msg, __args...) \
83 DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
84 #define ERROR(__dev, __msg, __args...) \
85 DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
86 #define ERROR_PROBE(__msg, __args...) \
87 DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
88 #define WARNING(__dev, __msg, __args...) \
89 DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
90 #define NOTICE(__dev, __msg, __args...) \
91 DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
92 #define INFO(__dev, __msg, __args...) \
93 DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
94 #define DEBUG(__dev, __msg, __args...) \
95 DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
96 #define EEPROM(__dev, __msg, __args...) \
97 DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
100 * Duration calculations
101 * The rate variable passed is: 100kbs.
102 * To convert from bytes to bits we multiply size with 8,
103 * then the size is multiplied with 10 to make the
104 * real rate -> rate argument correction.
106 #define GET_DURATION(__size, __rate) (((__size) * 8 * 10) / (__rate))
107 #define GET_DURATION_RES(__size, __rate)(((__size) * 8 * 10) % (__rate))
110 * Determine the number of L2 padding bytes required between the header and
113 #define L2PAD_SIZE(__hdrlen) (-(__hdrlen) & 3)
116 * Determine the alignment requirement,
117 * to make sure the 802.11 payload is padded to a 4-byte boundrary
118 * we must determine the address of the payload and calculate the
119 * amount of bytes needed to move the data.
121 #define ALIGN_SIZE(__skb, __header) \
122 ( ((unsigned long)((__skb)->data + (__header))) & 3 )
125 * Constants for extra TX headroom for alignment purposes.
127 #define RT2X00_ALIGN_SIZE 4 /* Only whole frame needs alignment */
128 #define RT2X00_L2PAD_SIZE 8 /* Both header & payload need alignment */
131 * Standard timing and size defines.
132 * These values should follow the ieee80211 specifications.
135 #define IEEE80211_HEADER 24
139 #define SHORT_PREAMBLE 72
141 #define SHORT_SLOT_TIME 9
143 #define PIFS ( SIFS + SLOT_TIME )
144 #define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
145 #define DIFS ( PIFS + SLOT_TIME )
146 #define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
147 #define EIFS ( SIFS + DIFS + \
148 GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
149 #define SHORT_EIFS ( SIFS + SHORT_DIFS + \
150 GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
153 * Structure for average calculation
154 * The avg field contains the actual average value,
155 * but avg_weight is internally used during calculations
156 * to prevent rounding errors.
163 enum rt2x00_chip_intf
{
164 RT2X00_CHIP_INTF_PCI
,
165 RT2X00_CHIP_INTF_PCIE
,
166 RT2X00_CHIP_INTF_USB
,
167 RT2X00_CHIP_INTF_SOC
,
171 * Chipset identification
172 * The chipset on the device is composed of a RT and RF chip.
173 * The chipset combination is important for determining device capabilities.
177 #define RT2460 0x2460
178 #define RT2560 0x2560
179 #define RT2570 0x2570
180 #define RT2661 0x2661
181 #define RT2573 0x2573
182 #define RT2860 0x2860 /* 2.4GHz */
183 #define RT2872 0x2872 /* WSOC */
184 #define RT2883 0x2883 /* WSOC */
185 #define RT3070 0x3070
186 #define RT3071 0x3071
187 #define RT3090 0x3090 /* 2.4GHz PCIe */
188 #define RT3390 0x3390
189 #define RT3572 0x3572
190 #define RT3593 0x3593 /* PCIe */
191 #define RT3883 0x3883 /* WSOC */
192 #define RT5390 0x5390 /* 2.4GHz */
197 enum rt2x00_chip_intf intf
;
201 * RF register values that belong to a particular channel.
212 * Channel information structure
214 struct channel_info
{
216 #define GEOGRAPHY_ALLOWED 0x00000001
219 short default_power1
;
220 short default_power2
;
224 * Antenna setup values.
226 struct antenna_setup
{
234 * Quality statistics about the currently active link.
238 * Statistics required for Link tuning by driver
239 * The rssi value is provided by rt2x00lib during the
240 * link_tuner() callback function.
241 * The false_cca field is filled during the link_stats()
242 * callback function and could be used during the
243 * link_tuner() callback function.
250 * Hardware driver will tune the VGC level during each call
251 * to the link_tuner() callback function. This vgc_level is
252 * is determined based on the link quality statistics like
253 * average RSSI and the false CCA count.
255 * In some cases the drivers need to differentiate between
256 * the currently "desired" VGC level and the level configured
257 * in the hardware. The latter is important to reduce the
258 * number of BBP register reads to reduce register access
259 * overhead. For this reason we store both values here.
265 * Statistics required for Signal quality calculation.
266 * These fields might be changed during the link_stats()
276 * Antenna settings about the currently active link.
283 #define ANTENNA_RX_DIVERSITY 0x00000001
284 #define ANTENNA_TX_DIVERSITY 0x00000002
285 #define ANTENNA_MODE_SAMPLE 0x00000004
288 * Currently active TX/RX antenna setup.
289 * When software diversity is used, this will indicate
290 * which antenna is actually used at this time.
292 struct antenna_setup active
;
295 * RSSI history information for the antenna.
296 * Used to determine when to switch antenna
297 * when using software diversity.
302 * Current RSSI average of the currently active antenna.
303 * Similar to the avg_rssi in the link_qual structure
304 * this value is updated by using the walking average.
306 struct avg_val rssi_ant
;
310 * To optimize the quality of the link we need to store
311 * the quality of received frames and periodically
317 * The number of times the link has been tuned
318 * since the radio has been switched on.
323 * Quality measurement values.
325 struct link_qual qual
;
328 * TX/RX antenna setup.
333 * Currently active average RSSI value
335 struct avg_val avg_rssi
;
338 * Work structure for scheduling periodic link tuning.
340 struct delayed_work work
;
343 * Work structure for scheduling periodic watchdog monitoring.
344 * This work must be scheduled on the kernel workqueue, while
345 * all other work structures must be queued on the mac80211
346 * workqueue. This guarantees that the watchdog can schedule
347 * other work structures and wait for their completion in order
348 * to bring the device/driver back into the desired state.
350 struct delayed_work watchdog_work
;
353 enum rt2x00_delayed_flags
{
354 DELAYED_UPDATE_BEACON
,
358 * Interface structure
359 * Per interface configuration details, this structure
360 * is allocated as the private data for ieee80211_vif.
364 * beacon->skb must be protected with the mutex.
366 struct mutex beacon_skb_mutex
;
369 * Entry in the beacon queue which belongs to
370 * this interface. Each interface has its own
371 * dedicated beacon entry.
373 struct queue_entry
*beacon
;
377 * Actions that needed rescheduling.
379 unsigned long delayed_flags
;
382 * Software sequence counter, this is only required
383 * for hardware which doesn't support hardware
390 static inline struct rt2x00_intf
* vif_to_intf(struct ieee80211_vif
*vif
)
392 return (struct rt2x00_intf
*)vif
->drv_priv
;
396 * struct hw_mode_spec: Hardware specifications structure
398 * Details about the supported modes, rates and channels
399 * of a particular chipset. This is used by rt2x00lib
400 * to build the ieee80211_hw_mode array for mac80211.
402 * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
403 * @supported_rates: Rate types which are supported (CCK, OFDM).
404 * @num_channels: Number of supported channels. This is used as array size
405 * for @tx_power_a, @tx_power_bg and @channels.
406 * @channels: Device/chipset specific channel values (See &struct rf_channel).
407 * @channels_info: Additional information for channels (See &struct channel_info).
408 * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
410 struct hw_mode_spec
{
411 unsigned int supported_bands
;
412 #define SUPPORT_BAND_2GHZ 0x00000001
413 #define SUPPORT_BAND_5GHZ 0x00000002
415 unsigned int supported_rates
;
416 #define SUPPORT_RATE_CCK 0x00000001
417 #define SUPPORT_RATE_OFDM 0x00000002
419 unsigned int num_channels
;
420 const struct rf_channel
*channels
;
421 const struct channel_info
*channels_info
;
423 struct ieee80211_sta_ht_cap ht
;
427 * Configuration structure wrapper around the
428 * mac80211 configuration structure.
429 * When mac80211 configures the driver, rt2x00lib
430 * can precalculate values which are equal for all
431 * rt2x00 drivers. Those values can be stored in here.
433 struct rt2x00lib_conf
{
434 struct ieee80211_conf
*conf
;
436 struct rf_channel rf
;
437 struct channel_info channel
;
441 * Configuration structure for erp settings.
443 struct rt2x00lib_erp
{
461 * Configuration structure for hardware encryption.
463 struct rt2x00lib_crypto
{
466 enum set_key_cmd cmd
;
478 * Configuration structure wrapper around the
479 * rt2x00 interface configuration handler.
481 struct rt2x00intf_conf
{
485 enum nl80211_iftype type
;
488 * TSF sync value, this is dependant on the operation type.
493 * The MAC and BSSID addressess are simple array of bytes,
494 * these arrays are little endian, so when sending the addressess
495 * to the drivers, copy the it into a endian-signed variable.
497 * Note that all devices (except rt2500usb) have 32 bits
498 * register word sizes. This means that whatever variable we
499 * pass _must_ be a multiple of 32 bits. Otherwise the device
500 * might not accept what we are sending to it.
501 * This will also make it easier for the driver to write
502 * the data to the device.
509 * rt2x00lib callback functions.
511 struct rt2x00lib_ops
{
513 * Interrupt handlers.
515 irq_handler_t irq_handler
;
518 * TX status tasklet handler.
520 void (*txstatus_tasklet
) (unsigned long data
);
521 void (*pretbtt_tasklet
) (unsigned long data
);
522 void (*tbtt_tasklet
) (unsigned long data
);
523 void (*rxdone_tasklet
) (unsigned long data
);
524 void (*autowake_tasklet
) (unsigned long data
);
527 * Device init handlers.
529 int (*probe_hw
) (struct rt2x00_dev
*rt2x00dev
);
530 char *(*get_firmware_name
) (struct rt2x00_dev
*rt2x00dev
);
531 int (*check_firmware
) (struct rt2x00_dev
*rt2x00dev
,
532 const u8
*data
, const size_t len
);
533 int (*load_firmware
) (struct rt2x00_dev
*rt2x00dev
,
534 const u8
*data
, const size_t len
);
537 * Device initialization/deinitialization handlers.
539 int (*initialize
) (struct rt2x00_dev
*rt2x00dev
);
540 void (*uninitialize
) (struct rt2x00_dev
*rt2x00dev
);
543 * queue initialization handlers
545 bool (*get_entry_state
) (struct queue_entry
*entry
);
546 void (*clear_entry
) (struct queue_entry
*entry
);
549 * Radio control handlers.
551 int (*set_device_state
) (struct rt2x00_dev
*rt2x00dev
,
552 enum dev_state state
);
553 int (*rfkill_poll
) (struct rt2x00_dev
*rt2x00dev
);
554 void (*link_stats
) (struct rt2x00_dev
*rt2x00dev
,
555 struct link_qual
*qual
);
556 void (*reset_tuner
) (struct rt2x00_dev
*rt2x00dev
,
557 struct link_qual
*qual
);
558 void (*link_tuner
) (struct rt2x00_dev
*rt2x00dev
,
559 struct link_qual
*qual
, const u32 count
);
562 * Data queue handlers.
564 void (*watchdog
) (struct rt2x00_dev
*rt2x00dev
);
565 void (*start_queue
) (struct data_queue
*queue
);
566 void (*kick_queue
) (struct data_queue
*queue
);
567 void (*stop_queue
) (struct data_queue
*queue
);
568 void (*flush_queue
) (struct data_queue
*queue
);
571 * TX control handlers
573 void (*write_tx_desc
) (struct queue_entry
*entry
,
574 struct txentry_desc
*txdesc
);
575 void (*write_tx_data
) (struct queue_entry
*entry
,
576 struct txentry_desc
*txdesc
);
577 void (*write_beacon
) (struct queue_entry
*entry
,
578 struct txentry_desc
*txdesc
);
579 void (*clear_beacon
) (struct queue_entry
*entry
);
580 int (*get_tx_data_len
) (struct queue_entry
*entry
);
583 * RX control handlers
585 void (*fill_rxdone
) (struct queue_entry
*entry
,
586 struct rxdone_entry_desc
*rxdesc
);
589 * Configuration handlers.
591 int (*config_shared_key
) (struct rt2x00_dev
*rt2x00dev
,
592 struct rt2x00lib_crypto
*crypto
,
593 struct ieee80211_key_conf
*key
);
594 int (*config_pairwise_key
) (struct rt2x00_dev
*rt2x00dev
,
595 struct rt2x00lib_crypto
*crypto
,
596 struct ieee80211_key_conf
*key
);
597 void (*config_filter
) (struct rt2x00_dev
*rt2x00dev
,
598 const unsigned int filter_flags
);
599 void (*config_intf
) (struct rt2x00_dev
*rt2x00dev
,
600 struct rt2x00_intf
*intf
,
601 struct rt2x00intf_conf
*conf
,
602 const unsigned int flags
);
603 #define CONFIG_UPDATE_TYPE ( 1 << 1 )
604 #define CONFIG_UPDATE_MAC ( 1 << 2 )
605 #define CONFIG_UPDATE_BSSID ( 1 << 3 )
607 void (*config_erp
) (struct rt2x00_dev
*rt2x00dev
,
608 struct rt2x00lib_erp
*erp
,
610 void (*config_ant
) (struct rt2x00_dev
*rt2x00dev
,
611 struct antenna_setup
*ant
);
612 void (*config
) (struct rt2x00_dev
*rt2x00dev
,
613 struct rt2x00lib_conf
*libconf
,
614 const unsigned int changed_flags
);
618 * rt2x00 driver callback operation structure.
622 const unsigned int max_sta_intf
;
623 const unsigned int max_ap_intf
;
624 const unsigned int eeprom_size
;
625 const unsigned int rf_size
;
626 const unsigned int tx_queues
;
627 const unsigned int extra_tx_headroom
;
628 const struct data_queue_desc
*rx
;
629 const struct data_queue_desc
*tx
;
630 const struct data_queue_desc
*bcn
;
631 const struct data_queue_desc
*atim
;
632 const struct rt2x00lib_ops
*lib
;
634 const struct ieee80211_ops
*hw
;
635 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
636 const struct rt2x00debug
*debugfs
;
637 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
641 * rt2x00 device flags
647 DEVICE_STATE_PRESENT
,
648 DEVICE_STATE_REGISTERED_HW
,
649 DEVICE_STATE_INITIALIZED
,
650 DEVICE_STATE_STARTED
,
651 DEVICE_STATE_ENABLED_RADIO
,
652 DEVICE_STATE_SCANNING
,
655 * Driver requirements
657 DRIVER_REQUIRE_FIRMWARE
,
658 DRIVER_REQUIRE_BEACON_GUARD
,
659 DRIVER_REQUIRE_ATIM_QUEUE
,
661 DRIVER_REQUIRE_COPY_IV
,
662 DRIVER_REQUIRE_L2PAD
,
663 DRIVER_REQUIRE_TXSTATUS_FIFO
,
664 DRIVER_REQUIRE_TASKLET_CONTEXT
,
669 CONFIG_SUPPORT_HW_BUTTON
,
670 CONFIG_SUPPORT_HW_CRYPTO
,
671 CONFIG_SUPPORT_POWER_LIMIT
,
672 DRIVER_SUPPORT_CONTROL_FILTERS
,
673 DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL
,
674 DRIVER_SUPPORT_PRE_TBTT_INTERRUPT
,
675 DRIVER_SUPPORT_LINK_TUNING
,
676 DRIVER_SUPPORT_WATCHDOG
,
679 * Driver configuration
683 CONFIG_EXTERNAL_LNA_A
,
684 CONFIG_EXTERNAL_LNA_BG
,
685 CONFIG_DOUBLE_ANTENNA
,
690 * rt2x00 device structure.
695 * The structure stored in here depends on the
696 * system bus (PCI or USB).
697 * When accessing this variable, the rt2x00dev_{pci,usb}
698 * macros should be used for correct typecasting.
703 * Callback functions.
705 const struct rt2x00_ops
*ops
;
708 * IEEE80211 control structure.
710 struct ieee80211_hw
*hw
;
711 struct ieee80211_supported_band bands
[IEEE80211_NUM_BANDS
];
712 enum ieee80211_band curr_band
;
716 * If enabled, the debugfs interface structures
717 * required for deregistration of debugfs.
719 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
720 struct rt2x00debug_intf
*debugfs_intf
;
721 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
724 * LED structure for changing the LED status
725 * by mac8011 or the kernel.
727 #ifdef CONFIG_RT2X00_LIB_LEDS
728 struct rt2x00_led led_radio
;
729 struct rt2x00_led led_assoc
;
730 struct rt2x00_led led_qual
;
732 #endif /* CONFIG_RT2X00_LIB_LEDS */
736 * In these flags the current status and some
737 * of the device capabilities are stored.
742 * Device information, Bus IRQ and name (PCI, SoC)
748 * Chipset identification.
750 struct rt2x00_chip chip
;
753 * hw capability specifications.
755 struct hw_mode_spec spec
;
758 * This is the default TX/RX antenna setup as indicated
759 * by the device's EEPROM.
761 struct antenna_setup default_ant
;
765 * csr.base: CSR base register address. (PCI)
766 * csr.cache: CSR cache for usb_control_msg. (USB)
774 * Mutex to protect register accesses.
775 * For PCI and USB devices it protects against concurrent indirect
776 * register access (BBP, RF, MCU) since accessing those
777 * registers require multiple calls to the CSR registers.
778 * For USB devices it also protects the csr_cache since that
779 * field is used for normal CSR access and it cannot support
780 * multiple callers simultaneously.
782 struct mutex csr_mutex
;
785 * Current packet filter configuration for the device.
786 * This contains all currently active FIF_* flags send
787 * to us by mac80211 during configure_filter().
789 unsigned int packet_filter
;
793 * - Open ap interface count.
794 * - Open sta interface count.
795 * - Association count.
796 * - Beaconing enabled count.
798 unsigned int intf_ap_count
;
799 unsigned int intf_sta_count
;
800 unsigned int intf_associated
;
801 unsigned int intf_beaconing
;
814 * Active RF register values.
815 * These are stored here so we don't need
816 * to read the rf registers and can directly
817 * use this value instead.
818 * This field should be accessed by using
819 * rt2x00_rf_read() and rt2x00_rf_write().
829 * Current TX power value.
834 * Current retry values.
840 * Rssi <-> Dbm offset
845 * Frequency offset (for rt61pci & rt73usb).
850 * Calibration information (for rt2800usb & rt2800pci).
862 * Low level statistics which will have
863 * to be kept up to date while device is running.
865 struct ieee80211_low_level_stats low_level_stats
;
868 * Work queue for all work which should not be placed
869 * on the mac80211 workqueue (because of dependencies
870 * between various work structures).
872 struct workqueue_struct
*workqueue
;
876 * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
877 * which means it cannot be placed on the hw->workqueue
878 * due to RTNL locking requirements.
880 struct work_struct intf_work
;
883 * Scheduled work for TX/RX done handling (USB devices)
885 struct work_struct rxdone_work
;
886 struct work_struct txdone_work
;
889 * Data queue arrays for RX, TX and Beacon.
890 * The Beacon array also contains the Atim queue
891 * if that is supported by the device.
893 unsigned int data_queues
;
894 struct data_queue
*rx
;
895 struct data_queue
*tx
;
896 struct data_queue
*bcn
;
901 const struct firmware
*fw
;
904 * FIFO for storing tx status reports between isr and tasklet.
906 DECLARE_KFIFO_PTR(txstatus_fifo
, u32
);
909 * Tasklet for processing tx status reports (rt2800pci).
911 struct tasklet_struct txstatus_tasklet
;
912 struct tasklet_struct pretbtt_tasklet
;
913 struct tasklet_struct tbtt_tasklet
;
914 struct tasklet_struct rxdone_tasklet
;
915 struct tasklet_struct autowake_tasklet
;
918 * Protect the interrupt mask register.
920 spinlock_t irqmask_lock
;
925 * Some registers require multiple attempts before success,
926 * in those cases REGISTER_BUSY_COUNT attempts should be
927 * taken with a REGISTER_BUSY_DELAY interval.
929 #define REGISTER_BUSY_COUNT 100
930 #define REGISTER_BUSY_DELAY 100
934 * The RF is being accessed by word index.
936 static inline void rt2x00_rf_read(struct rt2x00_dev
*rt2x00dev
,
937 const unsigned int word
, u32
*data
)
939 BUG_ON(word
< 1 || word
> rt2x00dev
->ops
->rf_size
/ sizeof(u32
));
940 *data
= rt2x00dev
->rf
[word
- 1];
943 static inline void rt2x00_rf_write(struct rt2x00_dev
*rt2x00dev
,
944 const unsigned int word
, u32 data
)
946 BUG_ON(word
< 1 || word
> rt2x00dev
->ops
->rf_size
/ sizeof(u32
));
947 rt2x00dev
->rf
[word
- 1] = data
;
951 * Generic EEPROM access.
952 * The EEPROM is being accessed by word index.
954 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev
*rt2x00dev
,
955 const unsigned int word
)
957 return (void *)&rt2x00dev
->eeprom
[word
];
960 static inline void rt2x00_eeprom_read(struct rt2x00_dev
*rt2x00dev
,
961 const unsigned int word
, u16
*data
)
963 *data
= le16_to_cpu(rt2x00dev
->eeprom
[word
]);
966 static inline void rt2x00_eeprom_write(struct rt2x00_dev
*rt2x00dev
,
967 const unsigned int word
, u16 data
)
969 rt2x00dev
->eeprom
[word
] = cpu_to_le16(data
);
975 static inline void rt2x00_set_chip(struct rt2x00_dev
*rt2x00dev
,
976 const u16 rt
, const u16 rf
, const u16 rev
)
978 rt2x00dev
->chip
.rt
= rt
;
979 rt2x00dev
->chip
.rf
= rf
;
980 rt2x00dev
->chip
.rev
= rev
;
983 "Chipset detected - rt: %04x, rf: %04x, rev: %04x.\n",
984 rt2x00dev
->chip
.rt
, rt2x00dev
->chip
.rf
, rt2x00dev
->chip
.rev
);
987 static inline bool rt2x00_rt(struct rt2x00_dev
*rt2x00dev
, const u16 rt
)
989 return (rt2x00dev
->chip
.rt
== rt
);
992 static inline bool rt2x00_rf(struct rt2x00_dev
*rt2x00dev
, const u16 rf
)
994 return (rt2x00dev
->chip
.rf
== rf
);
997 static inline u16
rt2x00_rev(struct rt2x00_dev
*rt2x00dev
)
999 return rt2x00dev
->chip
.rev
;
1002 static inline bool rt2x00_rt_rev(struct rt2x00_dev
*rt2x00dev
,
1003 const u16 rt
, const u16 rev
)
1005 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) == rev
);
1008 static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev
*rt2x00dev
,
1009 const u16 rt
, const u16 rev
)
1011 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) < rev
);
1014 static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev
*rt2x00dev
,
1015 const u16 rt
, const u16 rev
)
1017 return (rt2x00_rt(rt2x00dev
, rt
) && rt2x00_rev(rt2x00dev
) >= rev
);
1020 static inline void rt2x00_set_chip_intf(struct rt2x00_dev
*rt2x00dev
,
1021 enum rt2x00_chip_intf intf
)
1023 rt2x00dev
->chip
.intf
= intf
;
1026 static inline bool rt2x00_intf(struct rt2x00_dev
*rt2x00dev
,
1027 enum rt2x00_chip_intf intf
)
1029 return (rt2x00dev
->chip
.intf
== intf
);
1032 static inline bool rt2x00_is_pci(struct rt2x00_dev
*rt2x00dev
)
1034 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCI
) ||
1035 rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCIE
);
1038 static inline bool rt2x00_is_pcie(struct rt2x00_dev
*rt2x00dev
)
1040 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_PCIE
);
1043 static inline bool rt2x00_is_usb(struct rt2x00_dev
*rt2x00dev
)
1045 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_USB
);
1048 static inline bool rt2x00_is_soc(struct rt2x00_dev
*rt2x00dev
)
1050 return rt2x00_intf(rt2x00dev
, RT2X00_CHIP_INTF_SOC
);
1054 * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
1055 * @entry: Pointer to &struct queue_entry
1057 void rt2x00queue_map_txskb(struct queue_entry
*entry
);
1060 * rt2x00queue_unmap_skb - Unmap a skb from DMA.
1061 * @entry: Pointer to &struct queue_entry
1063 void rt2x00queue_unmap_skb(struct queue_entry
*entry
);
1066 * rt2x00queue_get_queue - Convert queue index to queue pointer
1067 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1068 * @queue: rt2x00 queue index (see &enum data_queue_qid).
1070 struct data_queue
*rt2x00queue_get_queue(struct rt2x00_dev
*rt2x00dev
,
1071 const enum data_queue_qid queue
);
1074 * rt2x00queue_get_entry - Get queue entry where the given index points to.
1075 * @queue: Pointer to &struct data_queue from where we obtain the entry.
1076 * @index: Index identifier for obtaining the correct index.
1078 struct queue_entry
*rt2x00queue_get_entry(struct data_queue
*queue
,
1079 enum queue_index index
);
1082 * rt2x00queue_pause_queue - Pause a data queue
1083 * @queue: Pointer to &struct data_queue.
1085 * This function will pause the data queue locally, preventing
1086 * new frames to be added to the queue (while the hardware is
1087 * still allowed to run).
1089 void rt2x00queue_pause_queue(struct data_queue
*queue
);
1092 * rt2x00queue_unpause_queue - unpause a data queue
1093 * @queue: Pointer to &struct data_queue.
1095 * This function will unpause the data queue locally, allowing
1096 * new frames to be added to the queue again.
1098 void rt2x00queue_unpause_queue(struct data_queue
*queue
);
1101 * rt2x00queue_start_queue - Start a data queue
1102 * @queue: Pointer to &struct data_queue.
1104 * This function will start handling all pending frames in the queue.
1106 void rt2x00queue_start_queue(struct data_queue
*queue
);
1109 * rt2x00queue_stop_queue - Halt a data queue
1110 * @queue: Pointer to &struct data_queue.
1112 * This function will stop all pending frames in the queue.
1114 void rt2x00queue_stop_queue(struct data_queue
*queue
);
1117 * rt2x00queue_flush_queue - Flush a data queue
1118 * @queue: Pointer to &struct data_queue.
1119 * @drop: True to drop all pending frames.
1121 * This function will flush the queue. After this call
1122 * the queue is guarenteed to be empty.
1124 void rt2x00queue_flush_queue(struct data_queue
*queue
, bool drop
);
1127 * rt2x00queue_start_queues - Start all data queues
1128 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1130 * This function will loop through all available queues to start them
1132 void rt2x00queue_start_queues(struct rt2x00_dev
*rt2x00dev
);
1135 * rt2x00queue_stop_queues - Halt all data queues
1136 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1138 * This function will loop through all available queues to stop
1139 * any pending frames.
1141 void rt2x00queue_stop_queues(struct rt2x00_dev
*rt2x00dev
);
1144 * rt2x00queue_flush_queues - Flush all data queues
1145 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1146 * @drop: True to drop all pending frames.
1148 * This function will loop through all available queues to flush
1149 * any pending frames.
1151 void rt2x00queue_flush_queues(struct rt2x00_dev
*rt2x00dev
, bool drop
);
1157 * rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
1158 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1159 * @type: The type of frame that is being dumped.
1160 * @skb: The skb containing the frame to be dumped.
1162 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1163 void rt2x00debug_dump_frame(struct rt2x00_dev
*rt2x00dev
,
1164 enum rt2x00_dump_type type
, struct sk_buff
*skb
);
1166 static inline void rt2x00debug_dump_frame(struct rt2x00_dev
*rt2x00dev
,
1167 enum rt2x00_dump_type type
,
1168 struct sk_buff
*skb
)
1171 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1174 * Interrupt context handlers.
1176 void rt2x00lib_beacondone(struct rt2x00_dev
*rt2x00dev
);
1177 void rt2x00lib_pretbtt(struct rt2x00_dev
*rt2x00dev
);
1178 void rt2x00lib_dmastart(struct queue_entry
*entry
);
1179 void rt2x00lib_dmadone(struct queue_entry
*entry
);
1180 void rt2x00lib_txdone(struct queue_entry
*entry
,
1181 struct txdone_entry_desc
*txdesc
);
1182 void rt2x00lib_txdone_noinfo(struct queue_entry
*entry
, u32 status
);
1183 void rt2x00lib_rxdone(struct queue_entry
*entry
);
1186 * mac80211 handlers.
1188 void rt2x00mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
);
1189 int rt2x00mac_start(struct ieee80211_hw
*hw
);
1190 void rt2x00mac_stop(struct ieee80211_hw
*hw
);
1191 int rt2x00mac_add_interface(struct ieee80211_hw
*hw
,
1192 struct ieee80211_vif
*vif
);
1193 void rt2x00mac_remove_interface(struct ieee80211_hw
*hw
,
1194 struct ieee80211_vif
*vif
);
1195 int rt2x00mac_config(struct ieee80211_hw
*hw
, u32 changed
);
1196 void rt2x00mac_configure_filter(struct ieee80211_hw
*hw
,
1197 unsigned int changed_flags
,
1198 unsigned int *total_flags
,
1200 int rt2x00mac_set_tim(struct ieee80211_hw
*hw
, struct ieee80211_sta
*sta
,
1202 #ifdef CONFIG_RT2X00_LIB_CRYPTO
1203 int rt2x00mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
1204 struct ieee80211_vif
*vif
, struct ieee80211_sta
*sta
,
1205 struct ieee80211_key_conf
*key
);
1207 #define rt2x00mac_set_key NULL
1208 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
1209 void rt2x00mac_sw_scan_start(struct ieee80211_hw
*hw
);
1210 void rt2x00mac_sw_scan_complete(struct ieee80211_hw
*hw
);
1211 int rt2x00mac_get_stats(struct ieee80211_hw
*hw
,
1212 struct ieee80211_low_level_stats
*stats
);
1213 void rt2x00mac_bss_info_changed(struct ieee80211_hw
*hw
,
1214 struct ieee80211_vif
*vif
,
1215 struct ieee80211_bss_conf
*bss_conf
,
1217 int rt2x00mac_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
1218 const struct ieee80211_tx_queue_params
*params
);
1219 void rt2x00mac_rfkill_poll(struct ieee80211_hw
*hw
);
1220 void rt2x00mac_flush(struct ieee80211_hw
*hw
, bool drop
);
1223 * Driver allocation handlers.
1225 int rt2x00lib_probe_dev(struct rt2x00_dev
*rt2x00dev
);
1226 void rt2x00lib_remove_dev(struct rt2x00_dev
*rt2x00dev
);
1228 int rt2x00lib_suspend(struct rt2x00_dev
*rt2x00dev
, pm_message_t state
);
1229 int rt2x00lib_resume(struct rt2x00_dev
*rt2x00dev
);
1230 #endif /* CONFIG_PM */
1232 #endif /* RT2X00_H */