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95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the | |
17 | Free Software Foundation, Inc., | |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00 | |
23 | Abstract: rt2x00 global information. | |
24 | */ | |
25 | ||
26 | #ifndef RT2X00_H | |
27 | #define RT2X00_H | |
28 | ||
29 | #include <linux/bitops.h> | |
95ea3627 ID |
30 | #include <linux/skbuff.h> |
31 | #include <linux/workqueue.h> | |
32 | #include <linux/firmware.h> | |
a9450b70 | 33 | #include <linux/leds.h> |
3d82346c | 34 | #include <linux/mutex.h> |
61af43c5 | 35 | #include <linux/etherdevice.h> |
95ea3627 ID |
36 | |
37 | #include <net/mac80211.h> | |
38 | ||
39 | #include "rt2x00debug.h" | |
a9450b70 | 40 | #include "rt2x00leds.h" |
95ea3627 | 41 | #include "rt2x00reg.h" |
181d6902 | 42 | #include "rt2x00queue.h" |
95ea3627 ID |
43 | |
44 | /* | |
45 | * Module information. | |
95ea3627 | 46 | */ |
1b92ad7a | 47 | #define DRV_VERSION "2.1.7" |
95ea3627 ID |
48 | #define DRV_PROJECT "http://rt2x00.serialmonkey.com" |
49 | ||
50 | /* | |
51 | * Debug definitions. | |
52 | * Debug output has to be enabled during compile time. | |
53 | */ | |
54 | #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \ | |
55 | printk(__kernlvl "%s -> %s: %s - " __msg, \ | |
56 | wiphy_name((__dev)->hw->wiphy), __FUNCTION__, __lvl, ##__args) | |
57 | ||
58 | #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \ | |
59 | printk(__kernlvl "%s -> %s: %s - " __msg, \ | |
2360157c | 60 | KBUILD_MODNAME, __FUNCTION__, __lvl, ##__args) |
95ea3627 ID |
61 | |
62 | #ifdef CONFIG_RT2X00_DEBUG | |
63 | #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \ | |
64 | DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args); | |
65 | #else | |
66 | #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \ | |
67 | do { } while (0) | |
68 | #endif /* CONFIG_RT2X00_DEBUG */ | |
69 | ||
70 | /* | |
71 | * Various debug levels. | |
72 | * The debug levels PANIC and ERROR both indicate serious problems, | |
73 | * for this reason they should never be ignored. | |
74 | * The special ERROR_PROBE message is for messages that are generated | |
75 | * when the rt2x00_dev is not yet initialized. | |
76 | */ | |
77 | #define PANIC(__dev, __msg, __args...) \ | |
78 | DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args) | |
79 | #define ERROR(__dev, __msg, __args...) \ | |
80 | DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args) | |
81 | #define ERROR_PROBE(__msg, __args...) \ | |
82 | DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args) | |
83 | #define WARNING(__dev, __msg, __args...) \ | |
84 | DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args) | |
85 | #define NOTICE(__dev, __msg, __args...) \ | |
86 | DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args) | |
87 | #define INFO(__dev, __msg, __args...) \ | |
88 | DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args) | |
89 | #define DEBUG(__dev, __msg, __args...) \ | |
90 | DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args) | |
91 | #define EEPROM(__dev, __msg, __args...) \ | |
92 | DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args) | |
93 | ||
95ea3627 ID |
94 | /* |
95 | * Standard timing and size defines. | |
96 | * These values should follow the ieee80211 specifications. | |
97 | */ | |
98 | #define ACK_SIZE 14 | |
99 | #define IEEE80211_HEADER 24 | |
100 | #define PLCP 48 | |
101 | #define BEACON 100 | |
102 | #define PREAMBLE 144 | |
103 | #define SHORT_PREAMBLE 72 | |
104 | #define SLOT_TIME 20 | |
105 | #define SHORT_SLOT_TIME 9 | |
106 | #define SIFS 10 | |
107 | #define PIFS ( SIFS + SLOT_TIME ) | |
108 | #define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME ) | |
109 | #define DIFS ( PIFS + SLOT_TIME ) | |
110 | #define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME ) | |
111 | #define EIFS ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) ) | |
112 | ||
95ea3627 ID |
113 | /* |
114 | * Chipset identification | |
115 | * The chipset on the device is composed of a RT and RF chip. | |
116 | * The chipset combination is important for determining device capabilities. | |
117 | */ | |
118 | struct rt2x00_chip { | |
119 | u16 rt; | |
120 | #define RT2460 0x0101 | |
121 | #define RT2560 0x0201 | |
122 | #define RT2570 0x1201 | |
12dadb90 ID |
123 | #define RT2561s 0x0301 /* Turbo */ |
124 | #define RT2561 0x0302 | |
95ea3627 ID |
125 | #define RT2661 0x0401 |
126 | #define RT2571 0x1300 | |
127 | ||
128 | u16 rf; | |
129 | u32 rev; | |
130 | }; | |
131 | ||
132 | /* | |
133 | * RF register values that belong to a particular channel. | |
134 | */ | |
135 | struct rf_channel { | |
136 | int channel; | |
137 | u32 rf1; | |
138 | u32 rf2; | |
139 | u32 rf3; | |
140 | u32 rf4; | |
141 | }; | |
142 | ||
addc81bd ID |
143 | /* |
144 | * Antenna setup values. | |
145 | */ | |
146 | struct antenna_setup { | |
147 | enum antenna rx; | |
148 | enum antenna tx; | |
149 | }; | |
150 | ||
95ea3627 | 151 | /* |
ebcf26da | 152 | * Quality statistics about the currently active link. |
95ea3627 | 153 | */ |
ebcf26da | 154 | struct link_qual { |
95ea3627 ID |
155 | /* |
156 | * Statistics required for Link tuning. | |
157 | * For the average RSSI value we use the "Walking average" approach. | |
158 | * When adding RSSI to the average value the following calculation | |
159 | * is needed: | |
160 | * | |
161 | * avg_rssi = ((avg_rssi * 7) + rssi) / 8; | |
162 | * | |
163 | * The advantage of this approach is that we only need 1 variable | |
164 | * to store the average in (No need for a count and a total). | |
165 | * But more importantly, normal average values will over time | |
166 | * move less and less towards newly added values this results | |
167 | * that with link tuning, the device can have a very good RSSI | |
168 | * for a few minutes but when the device is moved away from the AP | |
169 | * the average will not decrease fast enough to compensate. | |
170 | * The walking average compensates this and will move towards | |
171 | * the new values correctly allowing a effective link tuning. | |
172 | */ | |
173 | int avg_rssi; | |
95ea3627 ID |
174 | int false_cca; |
175 | ||
176 | /* | |
177 | * Statistics required for Signal quality calculation. | |
178 | * For calculating the Signal quality we have to determine | |
179 | * the total number of success and failed RX and TX frames. | |
180 | * After that we also use the average RSSI value to help | |
181 | * determining the signal quality. | |
182 | * For the calculation we will use the following algorithm: | |
183 | * | |
184 | * rssi_percentage = (avg_rssi * 100) / rssi_offset | |
185 | * rx_percentage = (rx_success * 100) / rx_total | |
186 | * tx_percentage = (tx_success * 100) / tx_total | |
187 | * avg_signal = ((WEIGHT_RSSI * avg_rssi) + | |
188 | * (WEIGHT_TX * tx_percentage) + | |
189 | * (WEIGHT_RX * rx_percentage)) / 100 | |
190 | * | |
191 | * This value should then be checked to not be greated then 100. | |
192 | */ | |
193 | int rx_percentage; | |
194 | int rx_success; | |
195 | int rx_failed; | |
196 | int tx_percentage; | |
197 | int tx_success; | |
198 | int tx_failed; | |
199 | #define WEIGHT_RSSI 20 | |
200 | #define WEIGHT_RX 40 | |
201 | #define WEIGHT_TX 40 | |
ebcf26da ID |
202 | }; |
203 | ||
69f81a2c ID |
204 | /* |
205 | * Antenna settings about the currently active link. | |
206 | */ | |
207 | struct link_ant { | |
208 | /* | |
209 | * Antenna flags | |
210 | */ | |
211 | unsigned int flags; | |
212 | #define ANTENNA_RX_DIVERSITY 0x00000001 | |
213 | #define ANTENNA_TX_DIVERSITY 0x00000002 | |
214 | #define ANTENNA_MODE_SAMPLE 0x00000004 | |
215 | ||
216 | /* | |
217 | * Currently active TX/RX antenna setup. | |
218 | * When software diversity is used, this will indicate | |
219 | * which antenna is actually used at this time. | |
220 | */ | |
221 | struct antenna_setup active; | |
222 | ||
223 | /* | |
224 | * RSSI information for the different antenna's. | |
225 | * These statistics are used to determine when | |
226 | * to switch antenna when using software diversity. | |
227 | * | |
228 | * rssi[0] -> Antenna A RSSI | |
229 | * rssi[1] -> Antenna B RSSI | |
230 | */ | |
231 | int rssi_history[2]; | |
232 | ||
233 | /* | |
234 | * Current RSSI average of the currently active antenna. | |
235 | * Similar to the avg_rssi in the link_qual structure | |
236 | * this value is updated by using the walking average. | |
237 | */ | |
238 | int rssi_ant; | |
239 | }; | |
240 | ||
ebcf26da ID |
241 | /* |
242 | * To optimize the quality of the link we need to store | |
243 | * the quality of received frames and periodically | |
244 | * optimize the link. | |
245 | */ | |
246 | struct link { | |
247 | /* | |
248 | * Link tuner counter | |
249 | * The number of times the link has been tuned | |
250 | * since the radio has been switched on. | |
251 | */ | |
252 | u32 count; | |
253 | ||
254 | /* | |
255 | * Quality measurement values. | |
256 | */ | |
257 | struct link_qual qual; | |
258 | ||
addc81bd | 259 | /* |
69f81a2c | 260 | * TX/RX antenna setup. |
addc81bd | 261 | */ |
69f81a2c | 262 | struct link_ant ant; |
addc81bd | 263 | |
ebcf26da ID |
264 | /* |
265 | * Active VGC level | |
266 | */ | |
267 | int vgc_level; | |
95ea3627 ID |
268 | |
269 | /* | |
270 | * Work structure for scheduling periodic link tuning. | |
271 | */ | |
272 | struct delayed_work work; | |
273 | }; | |
274 | ||
95ea3627 | 275 | /* |
69f81a2c | 276 | * Small helper macro to work with moving/walking averages. |
95ea3627 | 277 | */ |
69f81a2c ID |
278 | #define MOVING_AVERAGE(__avg, __val, __samples) \ |
279 | ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) ) | |
280 | ||
281 | /* | |
282 | * When we lack RSSI information return something less then -80 to | |
283 | * tell the driver to tune the device to maximum sensitivity. | |
284 | */ | |
285 | #define DEFAULT_RSSI ( -128 ) | |
95ea3627 ID |
286 | |
287 | /* | |
69f81a2c | 288 | * Link quality access functions. |
95ea3627 ID |
289 | */ |
290 | static inline int rt2x00_get_link_rssi(struct link *link) | |
291 | { | |
ebcf26da ID |
292 | if (link->qual.avg_rssi && link->qual.rx_success) |
293 | return link->qual.avg_rssi; | |
69f81a2c ID |
294 | return DEFAULT_RSSI; |
295 | } | |
296 | ||
297 | static inline int rt2x00_get_link_ant_rssi(struct link *link) | |
298 | { | |
299 | if (link->ant.rssi_ant && link->qual.rx_success) | |
300 | return link->ant.rssi_ant; | |
301 | return DEFAULT_RSSI; | |
302 | } | |
303 | ||
f06a0f48 ID |
304 | static inline void rt2x00_reset_link_ant_rssi(struct link *link) |
305 | { | |
306 | link->ant.rssi_ant = 0; | |
307 | } | |
308 | ||
69f81a2c ID |
309 | static inline int rt2x00_get_link_ant_rssi_history(struct link *link, |
310 | enum antenna ant) | |
311 | { | |
312 | if (link->ant.rssi_history[ant - ANTENNA_A]) | |
313 | return link->ant.rssi_history[ant - ANTENNA_A]; | |
314 | return DEFAULT_RSSI; | |
315 | } | |
316 | ||
317 | static inline int rt2x00_update_ant_rssi(struct link *link, int rssi) | |
318 | { | |
319 | int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A]; | |
320 | link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi; | |
321 | return old_rssi; | |
95ea3627 ID |
322 | } |
323 | ||
324 | /* | |
325 | * Interface structure | |
6bb40dd1 ID |
326 | * Per interface configuration details, this structure |
327 | * is allocated as the private data for ieee80211_vif. | |
95ea3627 | 328 | */ |
6bb40dd1 | 329 | struct rt2x00_intf { |
95ea3627 | 330 | /* |
6bb40dd1 ID |
331 | * All fields within the rt2x00_intf structure |
332 | * must be protected with a spinlock. | |
95ea3627 | 333 | */ |
6bb40dd1 | 334 | spinlock_t lock; |
95ea3627 ID |
335 | |
336 | /* | |
6bb40dd1 ID |
337 | * BSS configuration. Copied from the structure |
338 | * passed to us through the bss_info_changed() | |
339 | * callback funtion. | |
95ea3627 | 340 | */ |
6bb40dd1 | 341 | struct ieee80211_bss_conf conf; |
95ea3627 ID |
342 | |
343 | /* | |
344 | * MAC of the device. | |
345 | */ | |
346 | u8 mac[ETH_ALEN]; | |
347 | ||
348 | /* | |
349 | * BBSID of the AP to associate with. | |
350 | */ | |
351 | u8 bssid[ETH_ALEN]; | |
95ea3627 | 352 | |
6bb40dd1 ID |
353 | /* |
354 | * Entry in the beacon queue which belongs to | |
355 | * this interface. Each interface has its own | |
356 | * dedicated beacon entry. | |
357 | */ | |
358 | struct queue_entry *beacon; | |
95ea3627 | 359 | |
6bb40dd1 ID |
360 | /* |
361 | * Actions that needed rescheduling. | |
362 | */ | |
363 | unsigned int delayed_flags; | |
364 | #define DELAYED_UPDATE_BEACON 0x00000001 | |
72810379 | 365 | #define DELAYED_CONFIG_ERP 0x00000002 |
a2e1d52a | 366 | #define DELAYED_LED_ASSOC 0x00000004 |
6bb40dd1 ID |
367 | }; |
368 | ||
369 | static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif) | |
95ea3627 | 370 | { |
6bb40dd1 | 371 | return (struct rt2x00_intf *)vif->drv_priv; |
95ea3627 ID |
372 | } |
373 | ||
31562e80 ID |
374 | /** |
375 | * struct hw_mode_spec: Hardware specifications structure | |
376 | * | |
95ea3627 ID |
377 | * Details about the supported modes, rates and channels |
378 | * of a particular chipset. This is used by rt2x00lib | |
379 | * to build the ieee80211_hw_mode array for mac80211. | |
31562e80 ID |
380 | * |
381 | * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz). | |
382 | * @supported_rates: Rate types which are supported (CCK, OFDM). | |
383 | * @num_channels: Number of supported channels. This is used as array size | |
384 | * for @tx_power_a, @tx_power_bg and @channels. | |
9a46d44e | 385 | * @channels: Device/chipset specific channel values (See &struct rf_channel). |
31562e80 ID |
386 | * @tx_power_a: TX power values for all 5.2GHz channels (may be NULL). |
387 | * @tx_power_bg: TX power values for all 2.4GHz channels (may be NULL). | |
388 | * @tx_power_default: Default TX power value to use when either | |
389 | * @tx_power_a or @tx_power_bg is missing. | |
95ea3627 ID |
390 | */ |
391 | struct hw_mode_spec { | |
31562e80 ID |
392 | unsigned int supported_bands; |
393 | #define SUPPORT_BAND_2GHZ 0x00000001 | |
394 | #define SUPPORT_BAND_5GHZ 0x00000002 | |
395 | ||
396 | unsigned int supported_rates; | |
397 | #define SUPPORT_RATE_CCK 0x00000001 | |
398 | #define SUPPORT_RATE_OFDM 0x00000002 | |
399 | ||
400 | unsigned int num_channels; | |
401 | const struct rf_channel *channels; | |
95ea3627 | 402 | |
95ea3627 ID |
403 | const u8 *tx_power_a; |
404 | const u8 *tx_power_bg; | |
405 | u8 tx_power_default; | |
95ea3627 ID |
406 | }; |
407 | ||
5c58ee51 ID |
408 | /* |
409 | * Configuration structure wrapper around the | |
410 | * mac80211 configuration structure. | |
411 | * When mac80211 configures the driver, rt2x00lib | |
412 | * can precalculate values which are equal for all | |
413 | * rt2x00 drivers. Those values can be stored in here. | |
414 | */ | |
415 | struct rt2x00lib_conf { | |
416 | struct ieee80211_conf *conf; | |
417 | struct rf_channel rf; | |
418 | ||
addc81bd ID |
419 | struct antenna_setup ant; |
420 | ||
f5507ce9 | 421 | enum ieee80211_band band; |
5c58ee51 | 422 | |
aa776721 ID |
423 | u32 basic_rates; |
424 | u32 slot_time; | |
5c58ee51 ID |
425 | |
426 | short sifs; | |
427 | short pifs; | |
428 | short difs; | |
429 | short eifs; | |
430 | }; | |
431 | ||
72810379 ID |
432 | /* |
433 | * Configuration structure for erp settings. | |
434 | */ | |
435 | struct rt2x00lib_erp { | |
436 | int short_preamble; | |
437 | ||
438 | int ack_timeout; | |
439 | int ack_consume_time; | |
440 | }; | |
441 | ||
6bb40dd1 ID |
442 | /* |
443 | * Configuration structure wrapper around the | |
444 | * rt2x00 interface configuration handler. | |
445 | */ | |
446 | struct rt2x00intf_conf { | |
447 | /* | |
448 | * Interface type | |
449 | */ | |
450 | enum ieee80211_if_types type; | |
451 | ||
452 | /* | |
453 | * TSF sync value, this is dependant on the operation type. | |
454 | */ | |
455 | enum tsf_sync sync; | |
456 | ||
457 | /* | |
458 | * The MAC and BSSID addressess are simple array of bytes, | |
459 | * these arrays are little endian, so when sending the addressess | |
460 | * to the drivers, copy the it into a endian-signed variable. | |
461 | * | |
462 | * Note that all devices (except rt2500usb) have 32 bits | |
463 | * register word sizes. This means that whatever variable we | |
464 | * pass _must_ be a multiple of 32 bits. Otherwise the device | |
465 | * might not accept what we are sending to it. | |
466 | * This will also make it easier for the driver to write | |
467 | * the data to the device. | |
468 | */ | |
469 | __le32 mac[2]; | |
470 | __le32 bssid[2]; | |
471 | }; | |
472 | ||
95ea3627 ID |
473 | /* |
474 | * rt2x00lib callback functions. | |
475 | */ | |
476 | struct rt2x00lib_ops { | |
477 | /* | |
478 | * Interrupt handlers. | |
479 | */ | |
480 | irq_handler_t irq_handler; | |
481 | ||
482 | /* | |
483 | * Device init handlers. | |
484 | */ | |
485 | int (*probe_hw) (struct rt2x00_dev *rt2x00dev); | |
486 | char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev); | |
a7f3a06c | 487 | u16 (*get_firmware_crc) (void *data, const size_t len); |
95ea3627 ID |
488 | int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data, |
489 | const size_t len); | |
490 | ||
491 | /* | |
492 | * Device initialization/deinitialization handlers. | |
493 | */ | |
494 | int (*initialize) (struct rt2x00_dev *rt2x00dev); | |
495 | void (*uninitialize) (struct rt2x00_dev *rt2x00dev); | |
496 | ||
837e7f24 | 497 | /* |
181d6902 | 498 | * queue initialization handlers |
837e7f24 ID |
499 | */ |
500 | void (*init_rxentry) (struct rt2x00_dev *rt2x00dev, | |
181d6902 | 501 | struct queue_entry *entry); |
837e7f24 | 502 | void (*init_txentry) (struct rt2x00_dev *rt2x00dev, |
181d6902 | 503 | struct queue_entry *entry); |
837e7f24 | 504 | |
95ea3627 ID |
505 | /* |
506 | * Radio control handlers. | |
507 | */ | |
508 | int (*set_device_state) (struct rt2x00_dev *rt2x00dev, | |
509 | enum dev_state state); | |
510 | int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev); | |
ebcf26da ID |
511 | void (*link_stats) (struct rt2x00_dev *rt2x00dev, |
512 | struct link_qual *qual); | |
95ea3627 ID |
513 | void (*reset_tuner) (struct rt2x00_dev *rt2x00dev); |
514 | void (*link_tuner) (struct rt2x00_dev *rt2x00dev); | |
515 | ||
516 | /* | |
517 | * TX control handlers | |
518 | */ | |
519 | void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev, | |
dd3193e1 | 520 | struct sk_buff *skb, |
61486e0f | 521 | struct txentry_desc *txdesc); |
6db3786a | 522 | int (*write_tx_data) (struct queue_entry *entry); |
b242e891 | 523 | int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev, |
dd9fa2d2 | 524 | struct sk_buff *skb); |
95ea3627 | 525 | void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev, |
e58c6aca | 526 | const enum data_queue_qid queue); |
95ea3627 ID |
527 | |
528 | /* | |
529 | * RX control handlers | |
530 | */ | |
181d6902 ID |
531 | void (*fill_rxdone) (struct queue_entry *entry, |
532 | struct rxdone_entry_desc *rxdesc); | |
95ea3627 ID |
533 | |
534 | /* | |
535 | * Configuration handlers. | |
536 | */ | |
3a643d24 ID |
537 | void (*config_filter) (struct rt2x00_dev *rt2x00dev, |
538 | const unsigned int filter_flags); | |
6bb40dd1 ID |
539 | void (*config_intf) (struct rt2x00_dev *rt2x00dev, |
540 | struct rt2x00_intf *intf, | |
541 | struct rt2x00intf_conf *conf, | |
542 | const unsigned int flags); | |
543 | #define CONFIG_UPDATE_TYPE ( 1 << 1 ) | |
544 | #define CONFIG_UPDATE_MAC ( 1 << 2 ) | |
545 | #define CONFIG_UPDATE_BSSID ( 1 << 3 ) | |
546 | ||
3a643d24 ID |
547 | void (*config_erp) (struct rt2x00_dev *rt2x00dev, |
548 | struct rt2x00lib_erp *erp); | |
6bb40dd1 ID |
549 | void (*config) (struct rt2x00_dev *rt2x00dev, |
550 | struct rt2x00lib_conf *libconf, | |
551 | const unsigned int flags); | |
95ea3627 ID |
552 | #define CONFIG_UPDATE_PHYMODE ( 1 << 1 ) |
553 | #define CONFIG_UPDATE_CHANNEL ( 1 << 2 ) | |
554 | #define CONFIG_UPDATE_TXPOWER ( 1 << 3 ) | |
555 | #define CONFIG_UPDATE_ANTENNA ( 1 << 4 ) | |
556 | #define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 ) | |
557 | #define CONFIG_UPDATE_BEACON_INT ( 1 << 6 ) | |
558 | #define CONFIG_UPDATE_ALL 0xffff | |
559 | }; | |
560 | ||
561 | /* | |
562 | * rt2x00 driver callback operation structure. | |
563 | */ | |
564 | struct rt2x00_ops { | |
565 | const char *name; | |
6bb40dd1 ID |
566 | const unsigned int max_sta_intf; |
567 | const unsigned int max_ap_intf; | |
95ea3627 ID |
568 | const unsigned int eeprom_size; |
569 | const unsigned int rf_size; | |
61448f88 | 570 | const unsigned int tx_queues; |
181d6902 ID |
571 | const struct data_queue_desc *rx; |
572 | const struct data_queue_desc *tx; | |
573 | const struct data_queue_desc *bcn; | |
574 | const struct data_queue_desc *atim; | |
95ea3627 ID |
575 | const struct rt2x00lib_ops *lib; |
576 | const struct ieee80211_ops *hw; | |
577 | #ifdef CONFIG_RT2X00_LIB_DEBUGFS | |
578 | const struct rt2x00debug *debugfs; | |
579 | #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ | |
580 | }; | |
581 | ||
483272f5 ID |
582 | /* |
583 | * rt2x00 device flags | |
584 | */ | |
585 | enum rt2x00_flags { | |
586 | /* | |
587 | * Device state flags | |
588 | */ | |
589 | DEVICE_PRESENT, | |
590 | DEVICE_REGISTERED_HW, | |
591 | DEVICE_INITIALIZED, | |
592 | DEVICE_STARTED, | |
593 | DEVICE_STARTED_SUSPEND, | |
594 | DEVICE_ENABLED_RADIO, | |
81873e9c | 595 | DEVICE_DISABLED_RADIO_HW, |
483272f5 ID |
596 | |
597 | /* | |
598 | * Driver features | |
599 | */ | |
600 | DRIVER_REQUIRE_FIRMWARE, | |
181d6902 ID |
601 | DRIVER_REQUIRE_BEACON_GUARD, |
602 | DRIVER_REQUIRE_ATIM_QUEUE, | |
3a643d24 | 603 | DRIVER_REQUIRE_SCHEDULED, |
483272f5 ID |
604 | |
605 | /* | |
606 | * Driver configuration | |
607 | */ | |
608 | CONFIG_SUPPORT_HW_BUTTON, | |
609 | CONFIG_FRAME_TYPE, | |
610 | CONFIG_RF_SEQUENCE, | |
611 | CONFIG_EXTERNAL_LNA_A, | |
612 | CONFIG_EXTERNAL_LNA_BG, | |
613 | CONFIG_DOUBLE_ANTENNA, | |
614 | CONFIG_DISABLE_LINK_TUNING, | |
615 | }; | |
616 | ||
95ea3627 ID |
617 | /* |
618 | * rt2x00 device structure. | |
619 | */ | |
620 | struct rt2x00_dev { | |
621 | /* | |
622 | * Device structure. | |
623 | * The structure stored in here depends on the | |
624 | * system bus (PCI or USB). | |
625 | * When accessing this variable, the rt2x00dev_{pci,usb} | |
626 | * macro's should be used for correct typecasting. | |
627 | */ | |
628 | void *dev; | |
181d6902 ID |
629 | #define rt2x00dev_pci(__dev) ( (struct pci_dev *)(__dev)->dev ) |
630 | #define rt2x00dev_usb(__dev) ( (struct usb_interface *)(__dev)->dev ) | |
631 | #define rt2x00dev_usb_dev(__dev)\ | |
632 | ( (struct usb_device *)interface_to_usbdev(rt2x00dev_usb(__dev)) ) | |
95ea3627 ID |
633 | |
634 | /* | |
635 | * Callback functions. | |
636 | */ | |
637 | const struct rt2x00_ops *ops; | |
638 | ||
639 | /* | |
640 | * IEEE80211 control structure. | |
641 | */ | |
642 | struct ieee80211_hw *hw; | |
8318d78a JB |
643 | struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS]; |
644 | enum ieee80211_band curr_band; | |
95ea3627 ID |
645 | |
646 | /* | |
647 | * rfkill structure for RF state switching support. | |
648 | * This will only be compiled in when required. | |
649 | */ | |
650 | #ifdef CONFIG_RT2X00_LIB_RFKILL | |
3480a58a | 651 | unsigned long rfkill_state; |
1682fe6d ID |
652 | #define RFKILL_STATE_ALLOCATED 1 |
653 | #define RFKILL_STATE_REGISTERED 2 | |
95ea3627 ID |
654 | struct rfkill *rfkill; |
655 | struct input_polled_dev *poll_dev; | |
656 | #endif /* CONFIG_RT2X00_LIB_RFKILL */ | |
657 | ||
658 | /* | |
659 | * If enabled, the debugfs interface structures | |
660 | * required for deregistration of debugfs. | |
661 | */ | |
662 | #ifdef CONFIG_RT2X00_LIB_DEBUGFS | |
4d8dd66c | 663 | struct rt2x00debug_intf *debugfs_intf; |
95ea3627 ID |
664 | #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ |
665 | ||
a9450b70 ID |
666 | /* |
667 | * LED structure for changing the LED status | |
668 | * by mac8011 or the kernel. | |
669 | */ | |
670 | #ifdef CONFIG_RT2X00_LIB_LEDS | |
a9450b70 ID |
671 | struct rt2x00_led led_radio; |
672 | struct rt2x00_led led_assoc; | |
673 | struct rt2x00_led led_qual; | |
674 | u16 led_mcu_reg; | |
675 | #endif /* CONFIG_RT2X00_LIB_LEDS */ | |
676 | ||
95ea3627 ID |
677 | /* |
678 | * Device flags. | |
679 | * In these flags the current status and some | |
680 | * of the device capabilities are stored. | |
681 | */ | |
682 | unsigned long flags; | |
95ea3627 ID |
683 | |
684 | /* | |
685 | * Chipset identification. | |
686 | */ | |
687 | struct rt2x00_chip chip; | |
688 | ||
689 | /* | |
690 | * hw capability specifications. | |
691 | */ | |
692 | struct hw_mode_spec spec; | |
693 | ||
addc81bd ID |
694 | /* |
695 | * This is the default TX/RX antenna setup as indicated | |
696 | * by the device's EEPROM. When mac80211 sets its | |
697 | * antenna value to 0 we should be using these values. | |
698 | */ | |
699 | struct antenna_setup default_ant; | |
700 | ||
95ea3627 ID |
701 | /* |
702 | * Register pointers | |
21795094 ID |
703 | * csr.base: CSR base register address. (PCI) |
704 | * csr.cache: CSR cache for usb_control_msg. (USB) | |
95ea3627 | 705 | */ |
21795094 ID |
706 | union csr { |
707 | void __iomem *base; | |
708 | void *cache; | |
709 | } csr; | |
95ea3627 | 710 | |
3d82346c AB |
711 | /* |
712 | * Mutex to protect register accesses on USB devices. | |
713 | * There are 2 reasons this is needed, one is to ensure | |
714 | * use of the csr_cache (for USB devices) by one thread | |
715 | * isn't corrupted by another thread trying to access it. | |
716 | * The other is that access to BBP and RF registers | |
717 | * require multiple BUS transactions and if another thread | |
718 | * attempted to access one of those registers at the same | |
719 | * time one of the writes could silently fail. | |
720 | */ | |
721 | struct mutex usb_cache_mutex; | |
722 | ||
3c4f2085 ID |
723 | /* |
724 | * Current packet filter configuration for the device. | |
725 | * This contains all currently active FIF_* flags send | |
726 | * to us by mac80211 during configure_filter(). | |
727 | */ | |
728 | unsigned int packet_filter; | |
729 | ||
95ea3627 | 730 | /* |
6bb40dd1 ID |
731 | * Interface details: |
732 | * - Open ap interface count. | |
733 | * - Open sta interface count. | |
734 | * - Association count. | |
95ea3627 | 735 | */ |
6bb40dd1 ID |
736 | unsigned int intf_ap_count; |
737 | unsigned int intf_sta_count; | |
738 | unsigned int intf_associated; | |
95ea3627 ID |
739 | |
740 | /* | |
741 | * Link quality | |
742 | */ | |
743 | struct link link; | |
744 | ||
745 | /* | |
746 | * EEPROM data. | |
747 | */ | |
748 | __le16 *eeprom; | |
749 | ||
750 | /* | |
751 | * Active RF register values. | |
752 | * These are stored here so we don't need | |
753 | * to read the rf registers and can directly | |
754 | * use this value instead. | |
755 | * This field should be accessed by using | |
756 | * rt2x00_rf_read() and rt2x00_rf_write(). | |
757 | */ | |
758 | u32 *rf; | |
759 | ||
b242e891 ID |
760 | /* |
761 | * USB Max frame size (for rt2500usb & rt73usb). | |
762 | */ | |
763 | u16 usb_maxpacket; | |
764 | ||
95ea3627 ID |
765 | /* |
766 | * Current TX power value. | |
767 | */ | |
768 | u16 tx_power; | |
769 | ||
95ea3627 ID |
770 | /* |
771 | * Rssi <-> Dbm offset | |
772 | */ | |
773 | u8 rssi_offset; | |
774 | ||
775 | /* | |
776 | * Frequency offset (for rt61pci & rt73usb). | |
777 | */ | |
778 | u8 freq_offset; | |
779 | ||
780 | /* | |
781 | * Low level statistics which will have | |
782 | * to be kept up to date while device is running. | |
783 | */ | |
784 | struct ieee80211_low_level_stats low_level_stats; | |
785 | ||
786 | /* | |
787 | * RX configuration information. | |
788 | */ | |
789 | struct ieee80211_rx_status rx_status; | |
790 | ||
791 | /* | |
4150c572 | 792 | * Scheduled work. |
95ea3627 | 793 | */ |
6bb40dd1 | 794 | struct work_struct intf_work; |
4150c572 | 795 | struct work_struct filter_work; |
95ea3627 ID |
796 | |
797 | /* | |
181d6902 ID |
798 | * Data queue arrays for RX, TX and Beacon. |
799 | * The Beacon array also contains the Atim queue | |
95ea3627 ID |
800 | * if that is supported by the device. |
801 | */ | |
b869767b | 802 | unsigned int data_queues; |
181d6902 ID |
803 | struct data_queue *rx; |
804 | struct data_queue *tx; | |
805 | struct data_queue *bcn; | |
95ea3627 ID |
806 | |
807 | /* | |
808 | * Firmware image. | |
809 | */ | |
810 | const struct firmware *fw; | |
811 | }; | |
812 | ||
95ea3627 ID |
813 | /* |
814 | * Generic RF access. | |
815 | * The RF is being accessed by word index. | |
816 | */ | |
0e14f6d3 | 817 | static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
818 | const unsigned int word, u32 *data) |
819 | { | |
820 | *data = rt2x00dev->rf[word]; | |
821 | } | |
822 | ||
0e14f6d3 | 823 | static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
824 | const unsigned int word, u32 data) |
825 | { | |
826 | rt2x00dev->rf[word] = data; | |
827 | } | |
828 | ||
829 | /* | |
830 | * Generic EEPROM access. | |
831 | * The EEPROM is being accessed by word index. | |
832 | */ | |
0e14f6d3 | 833 | static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
834 | const unsigned int word) |
835 | { | |
836 | return (void *)&rt2x00dev->eeprom[word]; | |
837 | } | |
838 | ||
0e14f6d3 | 839 | static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
840 | const unsigned int word, u16 *data) |
841 | { | |
842 | *data = le16_to_cpu(rt2x00dev->eeprom[word]); | |
843 | } | |
844 | ||
0e14f6d3 | 845 | static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
846 | const unsigned int word, u16 data) |
847 | { | |
848 | rt2x00dev->eeprom[word] = cpu_to_le16(data); | |
849 | } | |
850 | ||
851 | /* | |
852 | * Chipset handlers | |
853 | */ | |
854 | static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev, | |
855 | const u16 rt, const u16 rf, const u32 rev) | |
856 | { | |
857 | INFO(rt2x00dev, | |
858 | "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n", | |
859 | rt, rf, rev); | |
860 | ||
861 | rt2x00dev->chip.rt = rt; | |
862 | rt2x00dev->chip.rf = rf; | |
863 | rt2x00dev->chip.rev = rev; | |
864 | } | |
865 | ||
866 | static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip) | |
867 | { | |
868 | return (chipset->rt == chip); | |
869 | } | |
870 | ||
871 | static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip) | |
872 | { | |
873 | return (chipset->rf == chip); | |
874 | } | |
875 | ||
755a957d | 876 | static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset) |
95ea3627 ID |
877 | { |
878 | return chipset->rev; | |
879 | } | |
880 | ||
755a957d ID |
881 | static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset, |
882 | const u32 rev) | |
95ea3627 | 883 | { |
755a957d ID |
884 | return (((chipset->rev & 0xffff0) == rev) && |
885 | !!(chipset->rev & 0x0000f)); | |
95ea3627 ID |
886 | } |
887 | ||
888 | /* | |
889 | * Duration calculations | |
890 | * The rate variable passed is: 100kbs. | |
891 | * To convert from bytes to bits we multiply size with 8, | |
892 | * then the size is multiplied with 10 to make the | |
893 | * real rate -> rate argument correction. | |
894 | */ | |
895 | static inline u16 get_duration(const unsigned int size, const u8 rate) | |
896 | { | |
897 | return ((size * 8 * 10) / rate); | |
898 | } | |
899 | ||
900 | static inline u16 get_duration_res(const unsigned int size, const u8 rate) | |
901 | { | |
902 | return ((size * 8 * 10) % rate); | |
903 | } | |
904 | ||
239c249d GW |
905 | /** |
906 | * rt2x00queue_alloc_rxskb - allocate a skb for RX purposes. | |
907 | * @queue: The queue for which the skb will be applicable. | |
908 | */ | |
909 | struct sk_buff *rt2x00queue_alloc_rxskb(struct data_queue *queue); | |
910 | ||
7050ec82 ID |
911 | /** |
912 | * rt2x00queue_create_tx_descriptor - Create TX descriptor from mac80211 input | |
913 | * @entry: The entry which will be used to transfer the TX frame. | |
914 | * @txdesc: rt2x00 TX descriptor which will be initialized by this function. | |
7050ec82 ID |
915 | * |
916 | * This function will initialize the &struct txentry_desc based on information | |
917 | * from mac80211. This descriptor can then be used by rt2x00lib and the drivers | |
918 | * to correctly initialize the hardware descriptor. | |
919 | * Note that before calling this function the skb->cb array must be untouched | |
920 | * by rt2x00lib. Only after this function completes will it be save to | |
921 | * overwrite the skb->cb information. | |
922 | * The reason for this is that mac80211 writes its own tx information into | |
923 | * the skb->cb array, and this function will use that information to initialize | |
924 | * the &struct txentry_desc structure. | |
925 | */ | |
926 | void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, | |
e039fa4a | 927 | struct txentry_desc *txdesc); |
7050ec82 ID |
928 | |
929 | /** | |
930 | * rt2x00queue_write_tx_descriptor - Write TX descriptor to hardware | |
931 | * @entry: The entry which will be used to transfer the TX frame. | |
932 | * @txdesc: TX descriptor which will be used to write hardware descriptor | |
933 | * | |
934 | * This function will write a TX descriptor initialized by | |
935 | * &rt2x00queue_create_tx_descriptor to the hardware. After this call | |
936 | * has completed the frame is now owned by the hardware, the hardware | |
937 | * queue will have automatically be kicked unless this frame was generated | |
938 | * by rt2x00lib, in which case the frame is "special" and must be kicked | |
939 | * by the caller. | |
940 | */ | |
941 | void rt2x00queue_write_tx_descriptor(struct queue_entry *entry, | |
942 | struct txentry_desc *txdesc); | |
943 | ||
181d6902 | 944 | /** |
e58c6aca | 945 | * rt2x00queue_get_queue - Convert queue index to queue pointer |
181d6902 | 946 | * @rt2x00dev: Pointer to &struct rt2x00_dev. |
e58c6aca | 947 | * @queue: rt2x00 queue index (see &enum data_queue_qid). |
95ea3627 | 948 | */ |
181d6902 | 949 | struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev, |
e58c6aca | 950 | const enum data_queue_qid queue); |
181d6902 ID |
951 | |
952 | /** | |
953 | * rt2x00queue_get_entry - Get queue entry where the given index points to. | |
9a46d44e | 954 | * @queue: Pointer to &struct data_queue from where we obtain the entry. |
181d6902 ID |
955 | * @index: Index identifier for obtaining the correct index. |
956 | */ | |
957 | struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue, | |
958 | enum queue_index index); | |
959 | ||
960 | /** | |
961 | * rt2x00queue_index_inc - Index incrementation function | |
962 | * @queue: Queue (&struct data_queue) to perform the action on. | |
9a46d44e | 963 | * @index: Index type (&enum queue_index) to perform the action on. |
181d6902 ID |
964 | * |
965 | * This function will increase the requested index on the queue, | |
966 | * it will grab the appropriate locks and handle queue overflow events by | |
967 | * resetting the index to the start of the queue. | |
968 | */ | |
969 | void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index); | |
970 | ||
95ea3627 ID |
971 | |
972 | /* | |
973 | * Interrupt context handlers. | |
974 | */ | |
975 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev); | |
181d6902 ID |
976 | void rt2x00lib_txdone(struct queue_entry *entry, |
977 | struct txdone_entry_desc *txdesc); | |
978 | void rt2x00lib_rxdone(struct queue_entry *entry, | |
979 | struct rxdone_entry_desc *rxdesc); | |
95ea3627 | 980 | |
95ea3627 ID |
981 | /* |
982 | * mac80211 handlers. | |
983 | */ | |
e039fa4a | 984 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb); |
95ea3627 ID |
985 | int rt2x00mac_start(struct ieee80211_hw *hw); |
986 | void rt2x00mac_stop(struct ieee80211_hw *hw); | |
987 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
988 | struct ieee80211_if_init_conf *conf); | |
989 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
990 | struct ieee80211_if_init_conf *conf); | |
991 | int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf); | |
32bfd35d JB |
992 | int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
993 | struct ieee80211_vif *vif, | |
95ea3627 | 994 | struct ieee80211_if_conf *conf); |
3a643d24 ID |
995 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
996 | unsigned int changed_flags, | |
997 | unsigned int *total_flags, | |
998 | int mc_count, struct dev_addr_list *mc_list); | |
95ea3627 ID |
999 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
1000 | struct ieee80211_low_level_stats *stats); | |
1001 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
1002 | struct ieee80211_tx_queue_stats *stats); | |
471b3efd JB |
1003 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
1004 | struct ieee80211_vif *vif, | |
1005 | struct ieee80211_bss_conf *bss_conf, | |
1006 | u32 changes); | |
e100bb64 | 1007 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
95ea3627 ID |
1008 | const struct ieee80211_tx_queue_params *params); |
1009 | ||
1010 | /* | |
1011 | * Driver allocation handlers. | |
1012 | */ | |
1013 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev); | |
1014 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev); | |
1015 | #ifdef CONFIG_PM | |
1016 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state); | |
1017 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev); | |
1018 | #endif /* CONFIG_PM */ | |
1019 | ||
1020 | #endif /* RT2X00_H */ |