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>
40 #include <linux/timer.h>
42 #include <net/mac80211.h>
44 #include "rt2x00debug.h"
45 #include "rt2x00dump.h"
46 #include "rt2x00leds.h"
47 #include "rt2x00reg.h"
48 #include "rt2x00queue.h"
53 #define DRV_VERSION "2.3.0"
54 #define DRV_PROJECT "http://rt2x00.serialmonkey.com"
58 * Debug output has to be enabled during compile time.
60 #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \
61 printk(__kernlvl "%s -> %s: %s - " __msg, \
62 wiphy_name((__dev)->hw->wiphy), __func__, __lvl, ##__args)
64 #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \
65 printk(__kernlvl "%s -> %s: %s - " __msg, \
66 KBUILD_MODNAME, __func__, __lvl, ##__args)
68 #ifdef CONFIG_RT2X00_DEBUG
69 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
70 DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args)
72 #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
74 #endif /* CONFIG_RT2X00_DEBUG */
77 * Various debug levels.
78 * The debug levels PANIC and ERROR both indicate serious problems,
79 * for this reason they should never be ignored.
80 * The special ERROR_PROBE message is for messages that are generated
81 * when the rt2x00_dev is not yet initialized.
83 #define PANIC(__dev, __msg, __args...) \
84 DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
85 #define ERROR(__dev, __msg, __args...) \
86 DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
87 #define ERROR_PROBE(__msg, __args...) \
88 DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
89 #define WARNING(__dev, __msg, __args...) \
90 DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
91 #define NOTICE(__dev, __msg, __args...) \
92 DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
93 #define INFO(__dev, __msg, __args...) \
94 DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
95 #define DEBUG(__dev, __msg, __args...) \
96 DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
97 #define EEPROM(__dev, __msg, __args...) \
98 DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
101 * Duration calculations
102 * The rate variable passed is: 100kbs.
103 * To convert from bytes to bits we multiply size with 8,
104 * then the size is multiplied with 10 to make the
105 * real rate -> rate argument correction.
107 #define GET_DURATION(__size, __rate) (((__size) * 8 * 10) / (__rate))
108 #define GET_DURATION_RES(__size, __rate)(((__size) * 8 * 10) % (__rate))
111 * Determine the number of L2 padding bytes required between the header and
114 #define L2PAD_SIZE(__hdrlen) (-(__hdrlen) & 3)
117 * Determine the alignment requirement,
118 * to make sure the 802.11 payload is padded to a 4-byte boundrary
119 * we must determine the address of the payload and calculate the
120 * amount of bytes needed to move the data.
122 #define ALIGN_SIZE(__skb, __header) \
123 ( ((unsigned long)((__skb)->data + (__header))) & 3 )
126 * Constants for extra TX headroom for alignment purposes.
128 #define RT2X00_ALIGN_SIZE 4 /* Only whole frame needs alignment */
129 #define RT2X00_L2PAD_SIZE 8 /* Both header & payload need alignment */
132 * Standard timing and size defines.
133 * These values should follow the ieee80211 specifications.
136 #define IEEE80211_HEADER 24
140 #define SHORT_PREAMBLE 72
142 #define SHORT_SLOT_TIME 9
144 #define PIFS ( SIFS + SLOT_TIME )
145 #define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
146 #define DIFS ( PIFS + SLOT_TIME )
147 #define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
148 #define EIFS ( SIFS + DIFS + \
149 GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
150 #define SHORT_EIFS ( SIFS + SHORT_DIFS + \
151 GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
154 * Structure for average calculation
155 * The avg field contains the actual average value,
156 * but avg_weight is internally used during calculations
157 * to prevent rounding errors.
164 enum rt2x00_chip_intf {
165 RT2X00_CHIP_INTF_PCI,
166 RT2X00_CHIP_INTF_PCIE,
167 RT2X00_CHIP_INTF_USB,
168 RT2X00_CHIP_INTF_SOC,
172 * Chipset identification
173 * The chipset on the device is composed of a RT and RF chip.
174 * The chipset combination is important for determining device capabilities.
178 #define RT2460 0x2460
179 #define RT2560 0x2560
180 #define RT2570 0x2570
181 #define RT2661 0x2661
182 #define RT2573 0x2573
183 #define RT2860 0x2860 /* 2.4GHz */
184 #define RT2872 0x2872 /* WSOC */
185 #define RT2883 0x2883 /* WSOC */
186 #define RT3070 0x3070
187 #define RT3071 0x3071
188 #define RT3090 0x3090 /* 2.4GHz PCIe */
189 #define RT3390 0x3390
190 #define RT3572 0x3572
191 #define RT3593 0x3593 /* PCIe */
192 #define RT3883 0x3883 /* WSOC */
193 #define RT5390 0x5390 /* 2.4GHz */
198 enum rt2x00_chip_intf intf;
202 * RF register values that belong to a particular channel.
213 * Channel information structure
215 struct channel_info {
217 #define GEOGRAPHY_ALLOWED 0x00000001
220 short default_power1;
221 short default_power2;
225 * Antenna setup values.
227 struct antenna_setup {
235 * Quality statistics about the currently active link.
239 * Statistics required for Link tuning by driver
240 * The rssi value is provided by rt2x00lib during the
241 * link_tuner() callback function.
242 * The false_cca field is filled during the link_stats()
243 * callback function and could be used during the
244 * link_tuner() callback function.
251 * Hardware driver will tune the VGC level during each call
252 * to the link_tuner() callback function. This vgc_level is
253 * is determined based on the link quality statistics like
254 * average RSSI and the false CCA count.
256 * In some cases the drivers need to differentiate between
257 * the currently "desired" VGC level and the level configured
258 * in the hardware. The latter is important to reduce the
259 * number of BBP register reads to reduce register access
260 * overhead. For this reason we store both values here.
266 * Statistics required for Signal quality calculation.
267 * These fields might be changed during the link_stats()
277 * Antenna settings about the currently active link.
284 #define ANTENNA_RX_DIVERSITY 0x00000001
285 #define ANTENNA_TX_DIVERSITY 0x00000002
286 #define ANTENNA_MODE_SAMPLE 0x00000004
289 * Currently active TX/RX antenna setup.
290 * When software diversity is used, this will indicate
291 * which antenna is actually used at this time.
293 struct antenna_setup active;
296 * RSSI history information for the antenna.
297 * Used to determine when to switch antenna
298 * when using software diversity.
303 * Current RSSI average of the currently active antenna.
304 * Similar to the avg_rssi in the link_qual structure
305 * this value is updated by using the walking average.
307 struct avg_val rssi_ant;
311 * To optimize the quality of the link we need to store
312 * the quality of received frames and periodically
318 * The number of times the link has been tuned
319 * since the radio has been switched on.
324 * Quality measurement values.
326 struct link_qual qual;
329 * TX/RX antenna setup.
334 * Currently active average RSSI value
336 struct avg_val avg_rssi;
339 * Work structure for scheduling periodic link tuning.
341 struct delayed_work work;
344 * Work structure for scheduling periodic watchdog monitoring.
345 * This work must be scheduled on the kernel workqueue, while
346 * all other work structures must be queued on the mac80211
347 * workqueue. This guarantees that the watchdog can schedule
348 * other work structures and wait for their completion in order
349 * to bring the device/driver back into the desired state.
351 struct delayed_work watchdog_work;
354 * Work structure for scheduling periodic AGC adjustments.
356 struct delayed_work agc_work;
359 enum rt2x00_delayed_flags {
360 DELAYED_UPDATE_BEACON,
364 * Interface structure
365 * Per interface configuration details, this structure
366 * is allocated as the private data for ieee80211_vif.
370 * beacon->skb must be protected with the mutex.
372 struct mutex beacon_skb_mutex;
375 * Entry in the beacon queue which belongs to
376 * this interface. Each interface has its own
377 * dedicated beacon entry.
379 struct queue_entry *beacon;
383 * Actions that needed rescheduling.
385 unsigned long delayed_flags;
388 * Software sequence counter, this is only required
389 * for hardware which doesn't support hardware
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 * @channels_info: Additional information for channels (See &struct channel_info).
414 * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
416 struct hw_mode_spec {
417 unsigned int supported_bands;
418 #define SUPPORT_BAND_2GHZ 0x00000001
419 #define SUPPORT_BAND_5GHZ 0x00000002
421 unsigned int supported_rates;
422 #define SUPPORT_RATE_CCK 0x00000001
423 #define SUPPORT_RATE_OFDM 0x00000002
425 unsigned int num_channels;
426 const struct rf_channel *channels;
427 const struct channel_info *channels_info;
429 struct ieee80211_sta_ht_cap ht;
433 * Configuration structure wrapper around the
434 * mac80211 configuration structure.
435 * When mac80211 configures the driver, rt2x00lib
436 * can precalculate values which are equal for all
437 * rt2x00 drivers. Those values can be stored in here.
439 struct rt2x00lib_conf {
440 struct ieee80211_conf *conf;
442 struct rf_channel rf;
443 struct channel_info channel;
447 * Configuration structure for erp settings.
449 struct rt2x00lib_erp {
467 * Configuration structure for hardware encryption.
469 struct rt2x00lib_crypto {
472 enum set_key_cmd cmd;
483 * Configuration structure wrapper around the
484 * rt2x00 interface configuration handler.
486 struct rt2x00intf_conf {
490 enum nl80211_iftype type;
493 * TSF sync value, this is dependent on the operation type.
498 * The MAC and BSSID addresses are simple array of bytes,
499 * these arrays are little endian, so when sending the addresses
500 * to the drivers, copy the it into a endian-signed variable.
502 * Note that all devices (except rt2500usb) have 32 bits
503 * register word sizes. This means that whatever variable we
504 * pass _must_ be a multiple of 32 bits. Otherwise the device
505 * might not accept what we are sending to it.
506 * This will also make it easier for the driver to write
507 * the data to the device.
514 * rt2x00lib callback functions.
516 struct rt2x00lib_ops {
518 * Interrupt handlers.
520 irq_handler_t irq_handler;
523 * TX status tasklet handler.
525 void (*txstatus_tasklet) (unsigned long data);
526 void (*pretbtt_tasklet) (unsigned long data);
527 void (*tbtt_tasklet) (unsigned long data);
528 void (*rxdone_tasklet) (unsigned long data);
529 void (*autowake_tasklet) (unsigned long data);
532 * Device init handlers.
534 int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
535 char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
536 int (*check_firmware) (struct rt2x00_dev *rt2x00dev,
537 const u8 *data, const size_t len);
538 int (*load_firmware) (struct rt2x00_dev *rt2x00dev,
539 const u8 *data, const size_t len);
542 * Device initialization/deinitialization handlers.
544 int (*initialize) (struct rt2x00_dev *rt2x00dev);
545 void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
548 * queue initialization handlers
550 bool (*get_entry_state) (struct queue_entry *entry);
551 void (*clear_entry) (struct queue_entry *entry);
554 * Radio control handlers.
556 int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
557 enum dev_state state);
558 int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
559 void (*link_stats) (struct rt2x00_dev *rt2x00dev,
560 struct link_qual *qual);
561 void (*reset_tuner) (struct rt2x00_dev *rt2x00dev,
562 struct link_qual *qual);
563 void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
564 struct link_qual *qual, const u32 count);
565 void (*gain_calibration) (struct rt2x00_dev *rt2x00dev);
568 * Data queue handlers.
570 void (*watchdog) (struct rt2x00_dev *rt2x00dev);
571 void (*start_queue) (struct data_queue *queue);
572 void (*kick_queue) (struct data_queue *queue);
573 void (*stop_queue) (struct data_queue *queue);
574 void (*flush_queue) (struct data_queue *queue, bool drop);
575 void (*tx_dma_done) (struct queue_entry *entry);
578 * TX control handlers
580 void (*write_tx_desc) (struct queue_entry *entry,
581 struct txentry_desc *txdesc);
582 void (*write_tx_data) (struct queue_entry *entry,
583 struct txentry_desc *txdesc);
584 void (*write_beacon) (struct queue_entry *entry,
585 struct txentry_desc *txdesc);
586 void (*clear_beacon) (struct queue_entry *entry);
587 int (*get_tx_data_len) (struct queue_entry *entry);
590 * RX control handlers
592 void (*fill_rxdone) (struct queue_entry *entry,
593 struct rxdone_entry_desc *rxdesc);
596 * Configuration handlers.
598 int (*config_shared_key) (struct rt2x00_dev *rt2x00dev,
599 struct rt2x00lib_crypto *crypto,
600 struct ieee80211_key_conf *key);
601 int (*config_pairwise_key) (struct rt2x00_dev *rt2x00dev,
602 struct rt2x00lib_crypto *crypto,
603 struct ieee80211_key_conf *key);
604 void (*config_filter) (struct rt2x00_dev *rt2x00dev,
605 const unsigned int filter_flags);
606 void (*config_intf) (struct rt2x00_dev *rt2x00dev,
607 struct rt2x00_intf *intf,
608 struct rt2x00intf_conf *conf,
609 const unsigned int flags);
610 #define CONFIG_UPDATE_TYPE ( 1 << 1 )
611 #define CONFIG_UPDATE_MAC ( 1 << 2 )
612 #define CONFIG_UPDATE_BSSID ( 1 << 3 )
614 void (*config_erp) (struct rt2x00_dev *rt2x00dev,
615 struct rt2x00lib_erp *erp,
617 void (*config_ant) (struct rt2x00_dev *rt2x00dev,
618 struct antenna_setup *ant);
619 void (*config) (struct rt2x00_dev *rt2x00dev,
620 struct rt2x00lib_conf *libconf,
621 const unsigned int changed_flags);
625 * rt2x00 driver callback operation structure.
629 const unsigned int max_sta_intf;
630 const unsigned int max_ap_intf;
631 const unsigned int eeprom_size;
632 const unsigned int rf_size;
633 const unsigned int tx_queues;
634 const unsigned int extra_tx_headroom;
635 const struct data_queue_desc *rx;
636 const struct data_queue_desc *tx;
637 const struct data_queue_desc *bcn;
638 const struct data_queue_desc *atim;
639 const struct rt2x00lib_ops *lib;
641 const struct ieee80211_ops *hw;
642 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
643 const struct rt2x00debug *debugfs;
644 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
650 enum rt2x00_state_flags {
654 DEVICE_STATE_PRESENT,
655 DEVICE_STATE_REGISTERED_HW,
656 DEVICE_STATE_INITIALIZED,
657 DEVICE_STATE_STARTED,
658 DEVICE_STATE_ENABLED_RADIO,
659 DEVICE_STATE_SCANNING,
662 * Driver configuration
668 * rt2x00 capability flags
670 enum rt2x00_capability_flags {
675 REQUIRE_BEACON_GUARD,
680 REQUIRE_TXSTATUS_FIFO,
681 REQUIRE_TASKLET_CONTEXT,
688 CAPABILITY_HW_BUTTON,
689 CAPABILITY_HW_CRYPTO,
690 CAPABILITY_POWER_LIMIT,
691 CAPABILITY_CONTROL_FILTERS,
692 CAPABILITY_CONTROL_FILTER_PSPOLL,
693 CAPABILITY_PRE_TBTT_INTERRUPT,
694 CAPABILITY_LINK_TUNING,
695 CAPABILITY_FRAME_TYPE,
696 CAPABILITY_RF_SEQUENCE,
697 CAPABILITY_EXTERNAL_LNA_A,
698 CAPABILITY_EXTERNAL_LNA_BG,
699 CAPABILITY_DOUBLE_ANTENNA,
703 * rt2x00 device structure.
708 * The structure stored in here depends on the
709 * system bus (PCI or USB).
710 * When accessing this variable, the rt2x00dev_{pci,usb}
711 * macros should be used for correct typecasting.
716 * Callback functions.
718 const struct rt2x00_ops *ops;
721 * IEEE80211 control structure.
723 struct ieee80211_hw *hw;
724 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
725 enum ieee80211_band curr_band;
729 * If enabled, the debugfs interface structures
730 * required for deregistration of debugfs.
732 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
733 struct rt2x00debug_intf *debugfs_intf;
734 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
737 * LED structure for changing the LED status
738 * by mac8011 or the kernel.
740 #ifdef CONFIG_RT2X00_LIB_LEDS
741 struct rt2x00_led led_radio;
742 struct rt2x00_led led_assoc;
743 struct rt2x00_led led_qual;
745 #endif /* CONFIG_RT2X00_LIB_LEDS */
748 * Device state flags.
749 * In these flags the current status is stored.
750 * Access to these flags should occur atomically.
755 * Device capabiltiy flags.
756 * In these flags the device/driver capabilities are stored.
757 * Access to these flags should occur non-atomically.
759 unsigned long cap_flags;
762 * Device information, Bus IRQ and name (PCI, SoC)
768 * Chipset identification.
770 struct rt2x00_chip chip;
773 * hw capability specifications.
775 struct hw_mode_spec spec;
778 * This is the default TX/RX antenna setup as indicated
779 * by the device's EEPROM.
781 struct antenna_setup default_ant;
785 * csr.base: CSR base register address. (PCI)
786 * csr.cache: CSR cache for usb_control_msg. (USB)
794 * Mutex to protect register accesses.
795 * For PCI and USB devices it protects against concurrent indirect
796 * register access (BBP, RF, MCU) since accessing those
797 * registers require multiple calls to the CSR registers.
798 * For USB devices it also protects the csr_cache since that
799 * field is used for normal CSR access and it cannot support
800 * multiple callers simultaneously.
802 struct mutex csr_mutex;
805 * Current packet filter configuration for the device.
806 * This contains all currently active FIF_* flags send
807 * to us by mac80211 during configure_filter().
809 unsigned int packet_filter;
813 * - Open ap interface count.
814 * - Open sta interface count.
815 * - Association count.
816 * - Beaconing enabled count.
818 unsigned int intf_ap_count;
819 unsigned int intf_sta_count;
820 unsigned int intf_associated;
821 unsigned int intf_beaconing;
834 * Active RF register values.
835 * These are stored here so we don't need
836 * to read the rf registers and can directly
837 * use this value instead.
838 * This field should be accessed by using
839 * rt2x00_rf_read() and rt2x00_rf_write().
849 * Current TX power value.
854 * Current retry values.
860 * Rssi <-> Dbm offset
865 * Frequency offset (for rt61pci & rt73usb).
870 * Calibration information (for rt2800usb & rt2800pci).
882 * Low level statistics which will have
883 * to be kept up to date while device is running.
885 struct ieee80211_low_level_stats low_level_stats;
888 * Work queue for all work which should not be placed
889 * on the mac80211 workqueue (because of dependencies
890 * between various work structures).
892 struct workqueue_struct *workqueue;
896 * NOTE: intf_work will use ieee80211_iterate_active_interfaces()
897 * which means it cannot be placed on the hw->workqueue
898 * due to RTNL locking requirements.
900 struct work_struct intf_work;
903 * Scheduled work for TX/RX done handling (USB devices)
905 struct work_struct rxdone_work;
906 struct work_struct txdone_work;
909 * Data queue arrays for RX, TX, Beacon and ATIM.
911 unsigned int data_queues;
912 struct data_queue *rx;
913 struct data_queue *tx;
914 struct data_queue *bcn;
915 struct data_queue *atim;
920 const struct firmware *fw;
923 * FIFO for storing tx status reports between isr and tasklet.
925 DECLARE_KFIFO_PTR(txstatus_fifo, u32);
928 * Timer to ensure tx status reports are read (rt2800usb).
930 struct timer_list txstatus_timer;
933 * Tasklet for processing tx status reports (rt2800pci).
935 struct tasklet_struct txstatus_tasklet;
936 struct tasklet_struct pretbtt_tasklet;
937 struct tasklet_struct tbtt_tasklet;
938 struct tasklet_struct rxdone_tasklet;
939 struct tasklet_struct autowake_tasklet;
942 * Protect the interrupt mask register.
944 spinlock_t irqmask_lock;
949 * Some registers require multiple attempts before success,
950 * in those cases REGISTER_BUSY_COUNT attempts should be
951 * taken with a REGISTER_BUSY_DELAY interval.
953 #define REGISTER_BUSY_COUNT 100
954 #define REGISTER_BUSY_DELAY 100
958 * The RF is being accessed by word index.
960 static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
961 const unsigned int word, u32 *data)
963 BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
964 *data = rt2x00dev->rf[word - 1];
967 static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
968 const unsigned int word, u32 data)
970 BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
971 rt2x00dev->rf[word - 1] = data;
975 * Generic EEPROM access.
976 * The EEPROM is being accessed by word index.
978 static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
979 const unsigned int word)
981 return (void *)&rt2x00dev->eeprom[word];
984 static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
985 const unsigned int word, u16 *data)
987 *data = le16_to_cpu(rt2x00dev->eeprom[word]);
990 static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
991 const unsigned int word, u16 data)
993 rt2x00dev->eeprom[word] = cpu_to_le16(data);
999 static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
1000 const u16 rt, const u16 rf, const u16 rev)
1002 rt2x00dev->chip.rt = rt;
1003 rt2x00dev->chip.rf = rf;
1004 rt2x00dev->chip.rev = rev;
1007 "Chipset detected - rt: %04x, rf: %04x, rev: %04x.\n",
1008 rt2x00dev->chip.rt, rt2x00dev->chip.rf, rt2x00dev->chip.rev);
1011 static inline bool rt2x00_rt(struct rt2x00_dev *rt2x00dev, const u16 rt)
1013 return (rt2x00dev->chip.rt == rt);
1016 static inline bool rt2x00_rf(struct rt2x00_dev *rt2x00dev, const u16 rf)
1018 return (rt2x00dev->chip.rf == rf);
1021 static inline u16 rt2x00_rev(struct rt2x00_dev *rt2x00dev)
1023 return rt2x00dev->chip.rev;
1026 static inline bool rt2x00_rt_rev(struct rt2x00_dev *rt2x00dev,
1027 const u16 rt, const u16 rev)
1029 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) == rev);
1032 static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev *rt2x00dev,
1033 const u16 rt, const u16 rev)
1035 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) < rev);
1038 static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev *rt2x00dev,
1039 const u16 rt, const u16 rev)
1041 return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) >= rev);
1044 static inline void rt2x00_set_chip_intf(struct rt2x00_dev *rt2x00dev,
1045 enum rt2x00_chip_intf intf)
1047 rt2x00dev->chip.intf = intf;
1050 static inline bool rt2x00_intf(struct rt2x00_dev *rt2x00dev,
1051 enum rt2x00_chip_intf intf)
1053 return (rt2x00dev->chip.intf == intf);
1056 static inline bool rt2x00_is_pci(struct rt2x00_dev *rt2x00dev)
1058 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI) ||
1059 rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1062 static inline bool rt2x00_is_pcie(struct rt2x00_dev *rt2x00dev)
1064 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
1067 static inline bool rt2x00_is_usb(struct rt2x00_dev *rt2x00dev)
1069 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_USB);
1072 static inline bool rt2x00_is_soc(struct rt2x00_dev *rt2x00dev)
1074 return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
1078 * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
1079 * @entry: Pointer to &struct queue_entry
1081 void rt2x00queue_map_txskb(struct queue_entry *entry);
1084 * rt2x00queue_unmap_skb - Unmap a skb from DMA.
1085 * @entry: Pointer to &struct queue_entry
1087 void rt2x00queue_unmap_skb(struct queue_entry *entry);
1090 * rt2x00queue_get_tx_queue - Convert tx queue index to queue pointer
1091 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1092 * @queue: rt2x00 queue index (see &enum data_queue_qid).
1094 * Returns NULL for non tx queues.
1096 static inline struct data_queue *
1097 rt2x00queue_get_tx_queue(struct rt2x00_dev *rt2x00dev,
1098 const enum data_queue_qid queue)
1100 if (queue < rt2x00dev->ops->tx_queues && rt2x00dev->tx)
1101 return &rt2x00dev->tx[queue];
1103 if (queue == QID_ATIM)
1104 return rt2x00dev->atim;
1110 * rt2x00queue_get_entry - Get queue entry where the given index points to.
1111 * @queue: Pointer to &struct data_queue from where we obtain the entry.
1112 * @index: Index identifier for obtaining the correct index.
1114 struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
1115 enum queue_index index);
1118 * rt2x00queue_pause_queue - Pause a data queue
1119 * @queue: Pointer to &struct data_queue.
1121 * This function will pause the data queue locally, preventing
1122 * new frames to be added to the queue (while the hardware is
1123 * still allowed to run).
1125 void rt2x00queue_pause_queue(struct data_queue *queue);
1128 * rt2x00queue_unpause_queue - unpause a data queue
1129 * @queue: Pointer to &struct data_queue.
1131 * This function will unpause the data queue locally, allowing
1132 * new frames to be added to the queue again.
1134 void rt2x00queue_unpause_queue(struct data_queue *queue);
1137 * rt2x00queue_start_queue - Start a data queue
1138 * @queue: Pointer to &struct data_queue.
1140 * This function will start handling all pending frames in the queue.
1142 void rt2x00queue_start_queue(struct data_queue *queue);
1145 * rt2x00queue_stop_queue - Halt a data queue
1146 * @queue: Pointer to &struct data_queue.
1148 * This function will stop all pending frames in the queue.
1150 void rt2x00queue_stop_queue(struct data_queue *queue);
1153 * rt2x00queue_flush_queue - Flush a data queue
1154 * @queue: Pointer to &struct data_queue.
1155 * @drop: True to drop all pending frames.
1157 * This function will flush the queue. After this call
1158 * the queue is guaranteed to be empty.
1160 void rt2x00queue_flush_queue(struct data_queue *queue, bool drop);
1163 * rt2x00queue_start_queues - Start all data queues
1164 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1166 * This function will loop through all available queues to start them
1168 void rt2x00queue_start_queues(struct rt2x00_dev *rt2x00dev);
1171 * rt2x00queue_stop_queues - Halt all data queues
1172 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1174 * This function will loop through all available queues to stop
1175 * any pending frames.
1177 void rt2x00queue_stop_queues(struct rt2x00_dev *rt2x00dev);
1180 * rt2x00queue_flush_queues - Flush all data queues
1181 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1182 * @drop: True to drop all pending frames.
1184 * This function will loop through all available queues to flush
1185 * any pending frames.
1187 void rt2x00queue_flush_queues(struct rt2x00_dev *rt2x00dev, bool drop);
1193 * rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
1194 * @rt2x00dev: Pointer to &struct rt2x00_dev.
1195 * @type: The type of frame that is being dumped.
1196 * @skb: The skb containing the frame to be dumped.
1198 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1199 void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1200 enum rt2x00_dump_type type, struct sk_buff *skb);
1202 static inline void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
1203 enum rt2x00_dump_type type,
1204 struct sk_buff *skb)
1207 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1210 * Interrupt context handlers.
1212 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
1213 void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev);
1214 void rt2x00lib_dmastart(struct queue_entry *entry);
1215 void rt2x00lib_dmadone(struct queue_entry *entry);
1216 void rt2x00lib_txdone(struct queue_entry *entry,
1217 struct txdone_entry_desc *txdesc);
1218 void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status);
1219 void rt2x00lib_rxdone(struct queue_entry *entry);
1222 * mac80211 handlers.
1224 void rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
1225 int rt2x00mac_start(struct ieee80211_hw *hw);
1226 void rt2x00mac_stop(struct ieee80211_hw *hw);
1227 int rt2x00mac_add_interface(struct ieee80211_hw *hw,
1228 struct ieee80211_vif *vif);
1229 void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
1230 struct ieee80211_vif *vif);
1231 int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed);
1232 void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
1233 unsigned int changed_flags,
1234 unsigned int *total_flags,
1236 int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
1238 #ifdef CONFIG_RT2X00_LIB_CRYPTO
1239 int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1240 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1241 struct ieee80211_key_conf *key);
1243 #define rt2x00mac_set_key NULL
1244 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
1245 void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw);
1246 void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw);
1247 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
1248 struct ieee80211_low_level_stats *stats);
1249 void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
1250 struct ieee80211_vif *vif,
1251 struct ieee80211_bss_conf *bss_conf,
1253 int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1254 const struct ieee80211_tx_queue_params *params);
1255 void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw);
1256 void rt2x00mac_flush(struct ieee80211_hw *hw, bool drop);
1257 int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant);
1258 int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant);
1259 void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
1260 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max);
1263 * Driver allocation handlers.
1265 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
1266 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
1268 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
1269 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
1270 #endif /* CONFIG_PM */
1272 #endif /* RT2X00_H */