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,
665 DRIVER_REQUIRE_SW_SEQNO,
670 CONFIG_SUPPORT_HW_BUTTON,
671 CONFIG_SUPPORT_HW_CRYPTO,
672 CONFIG_SUPPORT_POWER_LIMIT,
673 DRIVER_SUPPORT_CONTROL_FILTERS,
674 DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL,
675 DRIVER_SUPPORT_PRE_TBTT_INTERRUPT,
676 DRIVER_SUPPORT_LINK_TUNING,
677 DRIVER_SUPPORT_WATCHDOG,
680 * Driver configuration
684 CONFIG_EXTERNAL_LNA_A,
685 CONFIG_EXTERNAL_LNA_BG,
686 CONFIG_DOUBLE_ANTENNA,
691 * rt2x00 device structure.
696 * The structure stored in here depends on the
697 * system bus (PCI or USB).
698 * When accessing this variable, the rt2x00dev_{pci,usb}
699 * macros should be used for correct typecasting.
704 * Callback functions.
706 const struct rt2x00_ops *ops;
709 * IEEE80211 control structure.
711 struct ieee80211_hw *hw;
712 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
713 enum ieee80211_band curr_band;
717 * If enabled, the debugfs interface structures
718 * required for deregistration of debugfs.
720 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
721 struct rt2x00debug_intf *debugfs_intf;
722 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
725 * LED structure for changing the LED status
726 * by mac8011 or the kernel.
728 #ifdef CONFIG_RT2X00_LIB_LEDS
729 struct rt2x00_led led_radio;
730 struct rt2x00_led led_assoc;
731 struct rt2x00_led led_qual;
733 #endif /* CONFIG_RT2X00_LIB_LEDS */
737 * In these flags the current status and some
738 * of the device capabilities are stored.
743 * Device information, Bus IRQ and name (PCI, SoC)
749 * Chipset identification.
751 struct rt2x00_chip chip;
754 * hw capability specifications.
756 struct hw_mode_spec spec;
759 * This is the default TX/RX antenna setup as indicated
760 * by the device's EEPROM.
762 struct antenna_setup default_ant;
766 * csr.base: CSR base register address. (PCI)
767 * csr.cache: CSR cache for usb_control_msg. (USB)
775 * Mutex to protect register accesses.
776 * For PCI and USB devices it protects against concurrent indirect
777 * register access (BBP, RF, MCU) since accessing those
778 * registers require multiple calls to the CSR registers.
779 * For USB devices it also protects the csr_cache since that
780 * field is used for normal CSR access and it cannot support
781 * multiple callers simultaneously.
783 struct mutex csr_mutex;
786 * Current packet filter configuration for the device.
787 * This contains all currently active FIF_* flags send
788 * to us by mac80211 during configure_filter().
790 unsigned int packet_filter;
794 * - Open ap interface count.
795 * - Open sta interface count.
796 * - Association count.
797 * - Beaconing enabled count.
799 unsigned int intf_ap_count;
800 unsigned int intf_sta_count;
801 unsigned int intf_associated;
802 unsigned int intf_beaconing;
815 * Active RF register values.
816 * These are stored here so we don't need
817 * to read the rf registers and can directly
818 * use this value instead.
819 * This field should be accessed by using
820 * rt2x00_rf_read() and rt2x00_rf_write().
830 * Current TX power value.
835 * Current retry values.
841 * Rssi <-> Dbm offset
846 * Frequency offset (for rt61pci & rt73usb).
851 * Calibration information (for rt2800usb & rt2800pci).
863 * Low level statistics which will have
864 * to be kept up to date while device is running.
866 struct ieee80211_low_level_stats low_level_stats;
869 * Work queue for all work which should not be placed
870 * on the mac80211 workqueue (because of dependencies
871 * between various work structures).
873 struct workqueue_struct *workqueue;
877 * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
878 * which means it cannot be placed on the hw->workqueue
879 * due to RTNL locking requirements.
881 struct work_struct intf_work;
884 * Scheduled work for TX/RX done handling (USB devices)
886 struct work_struct rxdone_work;
887 struct work_struct txdone_work;
890 * Data queue arrays for RX, TX and Beacon.
891 * The Beacon array also contains the Atim queue
892 * if that is supported by the device.
894 unsigned int data_queues;
895 struct data_queue *rx;
896 struct data_queue *tx;
897 struct data_queue *bcn;
902 const struct firmware *fw;
905 * FIFO for storing tx status reports between isr and tasklet.
907 DECLARE_KFIFO_PTR(txstatus_fifo, u32);
910 * Tasklet for processing tx status reports (rt2800pci).
912 struct tasklet_struct txstatus_tasklet;
913 struct tasklet_struct pretbtt_tasklet;
914 struct tasklet_struct tbtt_tasklet;
915 struct tasklet_struct rxdone_tasklet;
916 struct tasklet_struct autowake_tasklet;
919 * Protect the interrupt mask register.
921 spinlock_t irqmask_lock;
926 * Some registers require multiple attempts before success,
927 * in those cases REGISTER_BUSY_COUNT attempts should be
928 * taken with a REGISTER_BUSY_DELAY interval.
930 #define REGISTER_BUSY_COUNT 100
931 #define REGISTER_BUSY_DELAY 100
935 * The RF is being accessed by word index.
937 static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
938 const unsigned int word, u32 *data)
940 BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
941 *data = rt2x00dev->rf[word - 1];
944 static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
945 const unsigned int word, u32 data)
947 BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
948 rt2x00dev->rf[word - 1] = data;
952 * Generic EEPROM access.
953 * The EEPROM is being accessed by word index.
955 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
956 const unsigned int word)
958 return (void *)&rt2x00dev->eeprom[word];
961 static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
962 const unsigned int word, u16 *data)
964 *data = le16_to_cpu(rt2x00dev->eeprom[word]);
967 static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
968 const unsigned int word, u16 data)
970 rt2x00dev->eeprom[word] = cpu_to_le16(data);
976 static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
977 const u16 rt, const u16 rf, const u16 rev)
979 rt2x00dev->chip.rt = rt;
980 rt2x00dev->chip.rf = rf;
981 rt2x00dev->chip.rev = rev;
984 "Chipset detected - rt: %04x, rf: %04x, rev: %04x.\n",
985 rt2x00dev->chip.rt, rt2x00dev->chip.rf, rt2x00dev->chip.rev);
988 static inline bool rt2x00_rt(struct rt2x00_dev *rt2x00dev, const u16 rt)
990 return (rt2x00dev->chip.rt == rt);
993 static inline bool rt2x00_rf(struct rt2x00_dev *rt2x00dev, const u16 rf)
995 return (rt2x00dev->chip.rf == rf);
998 static inline u16 rt2x00_rev(struct rt2x00_dev *rt2x00dev)
1000 return rt2x00dev->chip.rev;
1003 static inline bool rt2x00_rt_rev(struct rt2x00_dev *rt2x00dev,
1004 const u16 rt, const u16 rev)
1006 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) == rev);
1009 static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev *rt2x00dev,
1010 const u16 rt, const u16 rev)
1012 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) < rev);
1015 static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev *rt2x00dev,
1016 const u16 rt, const u16 rev)
1018 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) >= rev);
1021 static inline void rt2x00_set_chip_intf(struct rt2x00_dev *rt2x00dev,
1022 enum rt2x00_chip_intf intf)
1024 rt2x00dev->chip.intf = intf;
1027 static inline bool rt2x00_intf(struct rt2x00_dev *rt2x00dev,
1028 enum rt2x00_chip_intf intf)
1030 return (rt2x00dev->chip.intf == intf);
1033 static inline bool rt2x00_is_pci(struct rt2x00_dev *rt2x00dev)
1035 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI) ||
1036 rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1039 static inline bool rt2x00_is_pcie(struct rt2x00_dev *rt2x00dev)
1041 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1044 static inline bool rt2x00_is_usb(struct rt2x00_dev *rt2x00dev)
1046 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_USB);
1049 static inline bool rt2x00_is_soc(struct rt2x00_dev *rt2x00dev)
1051 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
1055 * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
1056 * @entry: Pointer to &struct queue_entry
1058 void rt2x00queue_map_txskb(struct queue_entry *entry);
1061 * rt2x00queue_unmap_skb - Unmap a skb from DMA.
1062 * @entry: Pointer to &struct queue_entry
1064 void rt2x00queue_unmap_skb(struct queue_entry *entry);
1067 * rt2x00queue_get_tx_queue - Convert tx queue index to queue pointer
1068 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1069 * @queue: rt2x00 queue index (see &enum data_queue_qid).
1071 * Returns NULL for non tx queues.
1073 static inline struct data_queue *
1074 rt2x00queue_get_tx_queue(struct rt2x00_dev *rt2x00dev,
1075 const enum data_queue_qid queue)
1077 if (queue < rt2x00dev->ops->tx_queues && rt2x00dev->tx)
1078 return &rt2x00dev->tx[queue];
1084 * rt2x00queue_get_queue - Convert queue index to queue pointer
1085 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1086 * @queue: rt2x00 queue index (see &enum data_queue_qid).
1088 struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
1089 const enum data_queue_qid queue);
1092 * rt2x00queue_get_entry - Get queue entry where the given index points to.
1093 * @queue: Pointer to &struct data_queue from where we obtain the entry.
1094 * @index: Index identifier for obtaining the correct index.
1096 struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
1097 enum queue_index index);
1100 * rt2x00queue_pause_queue - Pause a data queue
1101 * @queue: Pointer to &struct data_queue.
1103 * This function will pause the data queue locally, preventing
1104 * new frames to be added to the queue (while the hardware is
1105 * still allowed to run).
1107 void rt2x00queue_pause_queue(struct data_queue *queue);
1110 * rt2x00queue_unpause_queue - unpause a data queue
1111 * @queue: Pointer to &struct data_queue.
1113 * This function will unpause the data queue locally, allowing
1114 * new frames to be added to the queue again.
1116 void rt2x00queue_unpause_queue(struct data_queue *queue);
1119 * rt2x00queue_start_queue - Start a data queue
1120 * @queue: Pointer to &struct data_queue.
1122 * This function will start handling all pending frames in the queue.
1124 void rt2x00queue_start_queue(struct data_queue *queue);
1127 * rt2x00queue_stop_queue - Halt a data queue
1128 * @queue: Pointer to &struct data_queue.
1130 * This function will stop all pending frames in the queue.
1132 void rt2x00queue_stop_queue(struct data_queue *queue);
1135 * rt2x00queue_flush_queue - Flush a data queue
1136 * @queue: Pointer to &struct data_queue.
1137 * @drop: True to drop all pending frames.
1139 * This function will flush the queue. After this call
1140 * the queue is guarenteed to be empty.
1142 void rt2x00queue_flush_queue(struct data_queue *queue, bool drop);
1145 * rt2x00queue_start_queues - Start all data queues
1146 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1148 * This function will loop through all available queues to start them
1150 void rt2x00queue_start_queues(struct rt2x00_dev *rt2x00dev);
1153 * rt2x00queue_stop_queues - Halt all data queues
1154 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1156 * This function will loop through all available queues to stop
1157 * any pending frames.
1159 void rt2x00queue_stop_queues(struct rt2x00_dev *rt2x00dev);
1162 * rt2x00queue_flush_queues - Flush all data queues
1163 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1164 * @drop: True to drop all pending frames.
1166 * This function will loop through all available queues to flush
1167 * any pending frames.
1169 void rt2x00queue_flush_queues(struct rt2x00_dev *rt2x00dev, bool drop);
1175 * rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
1176 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1177 * @type: The type of frame that is being dumped.
1178 * @skb: The skb containing the frame to be dumped.
1180 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1181 void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1182 enum rt2x00_dump_type type, struct sk_buff *skb);
1184 static inline void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1185 enum rt2x00_dump_type type,
1186 struct sk_buff *skb)
1189 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1192 * Interrupt context handlers.
1194 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
1195 void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev);
1196 void rt2x00lib_dmastart(struct queue_entry *entry);
1197 void rt2x00lib_dmadone(struct queue_entry *entry);
1198 void rt2x00lib_txdone(struct queue_entry *entry,
1199 struct txdone_entry_desc *txdesc);
1200 void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status);
1201 void rt2x00lib_rxdone(struct queue_entry *entry);
1204 * mac80211 handlers.
1206 void rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
1207 int rt2x00mac_start(struct ieee80211_hw *hw);
1208 void rt2x00mac_stop(struct ieee80211_hw *hw);
1209 int rt2x00mac_add_interface(struct ieee80211_hw *hw,
1210 struct ieee80211_vif *vif);
1211 void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
1212 struct ieee80211_vif *vif);
1213 int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed);
1214 void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
1215 unsigned int changed_flags,
1216 unsigned int *total_flags,
1218 int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
1220 #ifdef CONFIG_RT2X00_LIB_CRYPTO
1221 int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1222 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1223 struct ieee80211_key_conf *key);
1225 #define rt2x00mac_set_key NULL
1226 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
1227 void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw);
1228 void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw);
1229 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
1230 struct ieee80211_low_level_stats *stats);
1231 void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
1232 struct ieee80211_vif *vif,
1233 struct ieee80211_bss_conf *bss_conf,
1235 int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1236 const struct ieee80211_tx_queue_params *params);
1237 void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw);
1238 void rt2x00mac_flush(struct ieee80211_hw *hw, bool drop);
1241 * Driver allocation handlers.
1243 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
1244 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
1246 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
1247 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
1248 #endif /* CONFIG_PM */
1250 #endif /* RT2X00_H */