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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 | */ |
9344e86e | 47 | #define DRV_VERSION "2.2.2" |
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, \ | |
c94c93da | 56 | wiphy_name((__dev)->hw->wiphy), __func__, __lvl, ##__args) |
95ea3627 ID |
57 | |
58 | #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \ | |
59 | printk(__kernlvl "%s -> %s: %s - " __msg, \ | |
c94c93da | 60 | KBUILD_MODNAME, __func__, __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 ) | |
f2fdbc48 ID |
111 | #define EIFS ( SIFS + DIFS + \ |
112 | (8 * (IEEE80211_HEADER + ACK_SIZE)) ) | |
113 | #define SHORT_EIFS ( SIFS + SHORT_DIFS + \ | |
114 | (8 * (IEEE80211_HEADER + ACK_SIZE)) ) | |
95ea3627 | 115 | |
95ea3627 ID |
116 | /* |
117 | * Chipset identification | |
118 | * The chipset on the device is composed of a RT and RF chip. | |
119 | * The chipset combination is important for determining device capabilities. | |
120 | */ | |
121 | struct rt2x00_chip { | |
122 | u16 rt; | |
123 | #define RT2460 0x0101 | |
124 | #define RT2560 0x0201 | |
125 | #define RT2570 0x1201 | |
12dadb90 ID |
126 | #define RT2561s 0x0301 /* Turbo */ |
127 | #define RT2561 0x0302 | |
95ea3627 ID |
128 | #define RT2661 0x0401 |
129 | #define RT2571 0x1300 | |
130 | ||
131 | u16 rf; | |
132 | u32 rev; | |
133 | }; | |
134 | ||
135 | /* | |
136 | * RF register values that belong to a particular channel. | |
137 | */ | |
138 | struct rf_channel { | |
139 | int channel; | |
140 | u32 rf1; | |
141 | u32 rf2; | |
142 | u32 rf3; | |
143 | u32 rf4; | |
144 | }; | |
145 | ||
8c5e7a5f ID |
146 | /* |
147 | * Channel information structure | |
148 | */ | |
149 | struct channel_info { | |
150 | unsigned int flags; | |
151 | #define GEOGRAPHY_ALLOWED 0x00000001 | |
152 | ||
153 | short tx_power1; | |
154 | short tx_power2; | |
155 | }; | |
156 | ||
addc81bd ID |
157 | /* |
158 | * Antenna setup values. | |
159 | */ | |
160 | struct antenna_setup { | |
161 | enum antenna rx; | |
162 | enum antenna tx; | |
163 | }; | |
164 | ||
95ea3627 | 165 | /* |
ebcf26da | 166 | * Quality statistics about the currently active link. |
95ea3627 | 167 | */ |
ebcf26da | 168 | struct link_qual { |
95ea3627 ID |
169 | /* |
170 | * Statistics required for Link tuning. | |
171 | * For the average RSSI value we use the "Walking average" approach. | |
172 | * When adding RSSI to the average value the following calculation | |
173 | * is needed: | |
174 | * | |
175 | * avg_rssi = ((avg_rssi * 7) + rssi) / 8; | |
176 | * | |
177 | * The advantage of this approach is that we only need 1 variable | |
178 | * to store the average in (No need for a count and a total). | |
179 | * But more importantly, normal average values will over time | |
180 | * move less and less towards newly added values this results | |
181 | * that with link tuning, the device can have a very good RSSI | |
182 | * for a few minutes but when the device is moved away from the AP | |
183 | * the average will not decrease fast enough to compensate. | |
184 | * The walking average compensates this and will move towards | |
185 | * the new values correctly allowing a effective link tuning. | |
186 | */ | |
187 | int avg_rssi; | |
95ea3627 ID |
188 | int false_cca; |
189 | ||
190 | /* | |
191 | * Statistics required for Signal quality calculation. | |
192 | * For calculating the Signal quality we have to determine | |
193 | * the total number of success and failed RX and TX frames. | |
194 | * After that we also use the average RSSI value to help | |
195 | * determining the signal quality. | |
196 | * For the calculation we will use the following algorithm: | |
197 | * | |
198 | * rssi_percentage = (avg_rssi * 100) / rssi_offset | |
199 | * rx_percentage = (rx_success * 100) / rx_total | |
200 | * tx_percentage = (tx_success * 100) / tx_total | |
201 | * avg_signal = ((WEIGHT_RSSI * avg_rssi) + | |
202 | * (WEIGHT_TX * tx_percentage) + | |
203 | * (WEIGHT_RX * rx_percentage)) / 100 | |
204 | * | |
205 | * This value should then be checked to not be greated then 100. | |
206 | */ | |
207 | int rx_percentage; | |
208 | int rx_success; | |
209 | int rx_failed; | |
210 | int tx_percentage; | |
211 | int tx_success; | |
212 | int tx_failed; | |
213 | #define WEIGHT_RSSI 20 | |
214 | #define WEIGHT_RX 40 | |
215 | #define WEIGHT_TX 40 | |
ebcf26da ID |
216 | }; |
217 | ||
69f81a2c ID |
218 | /* |
219 | * Antenna settings about the currently active link. | |
220 | */ | |
221 | struct link_ant { | |
222 | /* | |
223 | * Antenna flags | |
224 | */ | |
225 | unsigned int flags; | |
226 | #define ANTENNA_RX_DIVERSITY 0x00000001 | |
227 | #define ANTENNA_TX_DIVERSITY 0x00000002 | |
228 | #define ANTENNA_MODE_SAMPLE 0x00000004 | |
229 | ||
230 | /* | |
231 | * Currently active TX/RX antenna setup. | |
232 | * When software diversity is used, this will indicate | |
233 | * which antenna is actually used at this time. | |
234 | */ | |
235 | struct antenna_setup active; | |
236 | ||
237 | /* | |
238 | * RSSI information for the different antenna's. | |
239 | * These statistics are used to determine when | |
240 | * to switch antenna when using software diversity. | |
241 | * | |
242 | * rssi[0] -> Antenna A RSSI | |
243 | * rssi[1] -> Antenna B RSSI | |
244 | */ | |
245 | int rssi_history[2]; | |
246 | ||
247 | /* | |
248 | * Current RSSI average of the currently active antenna. | |
249 | * Similar to the avg_rssi in the link_qual structure | |
250 | * this value is updated by using the walking average. | |
251 | */ | |
252 | int rssi_ant; | |
253 | }; | |
254 | ||
ebcf26da ID |
255 | /* |
256 | * To optimize the quality of the link we need to store | |
257 | * the quality of received frames and periodically | |
258 | * optimize the link. | |
259 | */ | |
260 | struct link { | |
261 | /* | |
262 | * Link tuner counter | |
263 | * The number of times the link has been tuned | |
264 | * since the radio has been switched on. | |
265 | */ | |
266 | u32 count; | |
267 | ||
268 | /* | |
269 | * Quality measurement values. | |
270 | */ | |
271 | struct link_qual qual; | |
272 | ||
addc81bd | 273 | /* |
69f81a2c | 274 | * TX/RX antenna setup. |
addc81bd | 275 | */ |
69f81a2c | 276 | struct link_ant ant; |
addc81bd | 277 | |
ebcf26da ID |
278 | /* |
279 | * Active VGC level | |
280 | */ | |
281 | int vgc_level; | |
95ea3627 ID |
282 | |
283 | /* | |
284 | * Work structure for scheduling periodic link tuning. | |
285 | */ | |
286 | struct delayed_work work; | |
287 | }; | |
288 | ||
95ea3627 | 289 | /* |
69f81a2c | 290 | * Small helper macro to work with moving/walking averages. |
95ea3627 | 291 | */ |
69f81a2c ID |
292 | #define MOVING_AVERAGE(__avg, __val, __samples) \ |
293 | ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) ) | |
294 | ||
295 | /* | |
296 | * When we lack RSSI information return something less then -80 to | |
297 | * tell the driver to tune the device to maximum sensitivity. | |
298 | */ | |
299 | #define DEFAULT_RSSI ( -128 ) | |
95ea3627 ID |
300 | |
301 | /* | |
69f81a2c | 302 | * Link quality access functions. |
95ea3627 ID |
303 | */ |
304 | static inline int rt2x00_get_link_rssi(struct link *link) | |
305 | { | |
ebcf26da ID |
306 | if (link->qual.avg_rssi && link->qual.rx_success) |
307 | return link->qual.avg_rssi; | |
69f81a2c ID |
308 | return DEFAULT_RSSI; |
309 | } | |
310 | ||
311 | static inline int rt2x00_get_link_ant_rssi(struct link *link) | |
312 | { | |
313 | if (link->ant.rssi_ant && link->qual.rx_success) | |
314 | return link->ant.rssi_ant; | |
315 | return DEFAULT_RSSI; | |
316 | } | |
317 | ||
f06a0f48 ID |
318 | static inline void rt2x00_reset_link_ant_rssi(struct link *link) |
319 | { | |
320 | link->ant.rssi_ant = 0; | |
321 | } | |
322 | ||
69f81a2c ID |
323 | static inline int rt2x00_get_link_ant_rssi_history(struct link *link, |
324 | enum antenna ant) | |
325 | { | |
326 | if (link->ant.rssi_history[ant - ANTENNA_A]) | |
327 | return link->ant.rssi_history[ant - ANTENNA_A]; | |
328 | return DEFAULT_RSSI; | |
329 | } | |
330 | ||
331 | static inline int rt2x00_update_ant_rssi(struct link *link, int rssi) | |
332 | { | |
333 | int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A]; | |
334 | link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi; | |
335 | return old_rssi; | |
95ea3627 ID |
336 | } |
337 | ||
338 | /* | |
339 | * Interface structure | |
6bb40dd1 ID |
340 | * Per interface configuration details, this structure |
341 | * is allocated as the private data for ieee80211_vif. | |
95ea3627 | 342 | */ |
6bb40dd1 | 343 | struct rt2x00_intf { |
95ea3627 | 344 | /* |
6bb40dd1 ID |
345 | * All fields within the rt2x00_intf structure |
346 | * must be protected with a spinlock. | |
95ea3627 | 347 | */ |
6bb40dd1 | 348 | spinlock_t lock; |
95ea3627 | 349 | |
95ea3627 ID |
350 | /* |
351 | * MAC of the device. | |
352 | */ | |
353 | u8 mac[ETH_ALEN]; | |
354 | ||
355 | /* | |
356 | * BBSID of the AP to associate with. | |
357 | */ | |
358 | u8 bssid[ETH_ALEN]; | |
95ea3627 | 359 | |
6bb40dd1 ID |
360 | /* |
361 | * Entry in the beacon queue which belongs to | |
362 | * this interface. Each interface has its own | |
363 | * dedicated beacon entry. | |
364 | */ | |
365 | struct queue_entry *beacon; | |
95ea3627 | 366 | |
6bb40dd1 ID |
367 | /* |
368 | * Actions that needed rescheduling. | |
369 | */ | |
370 | unsigned int delayed_flags; | |
371 | #define DELAYED_UPDATE_BEACON 0x00000001 | |
72810379 | 372 | #define DELAYED_CONFIG_ERP 0x00000002 |
a2e1d52a | 373 | #define DELAYED_LED_ASSOC 0x00000004 |
f591fa5d | 374 | |
d4764b29 ID |
375 | /* |
376 | * Software sequence counter, this is only required | |
377 | * for hardware which doesn't support hardware | |
378 | * sequence counting. | |
379 | */ | |
380 | spinlock_t seqlock; | |
f591fa5d | 381 | u16 seqno; |
6bb40dd1 ID |
382 | }; |
383 | ||
384 | static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif) | |
95ea3627 | 385 | { |
6bb40dd1 | 386 | return (struct rt2x00_intf *)vif->drv_priv; |
95ea3627 ID |
387 | } |
388 | ||
31562e80 ID |
389 | /** |
390 | * struct hw_mode_spec: Hardware specifications structure | |
391 | * | |
95ea3627 ID |
392 | * Details about the supported modes, rates and channels |
393 | * of a particular chipset. This is used by rt2x00lib | |
394 | * to build the ieee80211_hw_mode array for mac80211. | |
31562e80 ID |
395 | * |
396 | * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz). | |
397 | * @supported_rates: Rate types which are supported (CCK, OFDM). | |
398 | * @num_channels: Number of supported channels. This is used as array size | |
399 | * for @tx_power_a, @tx_power_bg and @channels. | |
9a46d44e | 400 | * @channels: Device/chipset specific channel values (See &struct rf_channel). |
8c5e7a5f | 401 | * @channels_info: Additional information for channels (See &struct channel_info). |
95ea3627 ID |
402 | */ |
403 | struct hw_mode_spec { | |
31562e80 ID |
404 | unsigned int supported_bands; |
405 | #define SUPPORT_BAND_2GHZ 0x00000001 | |
406 | #define SUPPORT_BAND_5GHZ 0x00000002 | |
407 | ||
408 | unsigned int supported_rates; | |
409 | #define SUPPORT_RATE_CCK 0x00000001 | |
410 | #define SUPPORT_RATE_OFDM 0x00000002 | |
411 | ||
412 | unsigned int num_channels; | |
413 | const struct rf_channel *channels; | |
8c5e7a5f | 414 | const struct channel_info *channels_info; |
95ea3627 ID |
415 | }; |
416 | ||
5c58ee51 ID |
417 | /* |
418 | * Configuration structure wrapper around the | |
419 | * mac80211 configuration structure. | |
420 | * When mac80211 configures the driver, rt2x00lib | |
421 | * can precalculate values which are equal for all | |
422 | * rt2x00 drivers. Those values can be stored in here. | |
423 | */ | |
424 | struct rt2x00lib_conf { | |
425 | struct ieee80211_conf *conf; | |
8c5e7a5f | 426 | |
5c58ee51 | 427 | struct rf_channel rf; |
8c5e7a5f | 428 | struct channel_info channel; |
5c58ee51 ID |
429 | }; |
430 | ||
72810379 ID |
431 | /* |
432 | * Configuration structure for erp settings. | |
433 | */ | |
434 | struct rt2x00lib_erp { | |
435 | int short_preamble; | |
e360c4cb | 436 | int cts_protection; |
72810379 ID |
437 | |
438 | int ack_timeout; | |
439 | int ack_consume_time; | |
e4ea1c40 ID |
440 | |
441 | u64 basic_rates; | |
442 | ||
443 | int slot_time; | |
444 | ||
445 | short sifs; | |
446 | short pifs; | |
447 | short difs; | |
448 | short eifs; | |
72810379 ID |
449 | }; |
450 | ||
2bb057d0 ID |
451 | /* |
452 | * Configuration structure for hardware encryption. | |
453 | */ | |
454 | struct rt2x00lib_crypto { | |
455 | enum cipher cipher; | |
456 | ||
457 | enum set_key_cmd cmd; | |
458 | const u8 *address; | |
459 | ||
460 | u32 bssidx; | |
461 | u32 aid; | |
462 | ||
463 | u8 key[16]; | |
464 | u8 tx_mic[8]; | |
465 | u8 rx_mic[8]; | |
466 | }; | |
467 | ||
6bb40dd1 ID |
468 | /* |
469 | * Configuration structure wrapper around the | |
470 | * rt2x00 interface configuration handler. | |
471 | */ | |
472 | struct rt2x00intf_conf { | |
473 | /* | |
474 | * Interface type | |
475 | */ | |
05c914fe | 476 | enum nl80211_iftype type; |
6bb40dd1 ID |
477 | |
478 | /* | |
479 | * TSF sync value, this is dependant on the operation type. | |
480 | */ | |
481 | enum tsf_sync sync; | |
482 | ||
483 | /* | |
484 | * The MAC and BSSID addressess are simple array of bytes, | |
485 | * these arrays are little endian, so when sending the addressess | |
486 | * to the drivers, copy the it into a endian-signed variable. | |
487 | * | |
488 | * Note that all devices (except rt2500usb) have 32 bits | |
489 | * register word sizes. This means that whatever variable we | |
490 | * pass _must_ be a multiple of 32 bits. Otherwise the device | |
491 | * might not accept what we are sending to it. | |
492 | * This will also make it easier for the driver to write | |
493 | * the data to the device. | |
494 | */ | |
495 | __le32 mac[2]; | |
496 | __le32 bssid[2]; | |
497 | }; | |
498 | ||
95ea3627 ID |
499 | /* |
500 | * rt2x00lib callback functions. | |
501 | */ | |
502 | struct rt2x00lib_ops { | |
503 | /* | |
504 | * Interrupt handlers. | |
505 | */ | |
506 | irq_handler_t irq_handler; | |
507 | ||
508 | /* | |
509 | * Device init handlers. | |
510 | */ | |
511 | int (*probe_hw) (struct rt2x00_dev *rt2x00dev); | |
512 | char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev); | |
f160ebcb DW |
513 | u16 (*get_firmware_crc) (const void *data, const size_t len); |
514 | int (*load_firmware) (struct rt2x00_dev *rt2x00dev, const void *data, | |
95ea3627 ID |
515 | const size_t len); |
516 | ||
517 | /* | |
518 | * Device initialization/deinitialization handlers. | |
519 | */ | |
520 | int (*initialize) (struct rt2x00_dev *rt2x00dev); | |
521 | void (*uninitialize) (struct rt2x00_dev *rt2x00dev); | |
522 | ||
837e7f24 | 523 | /* |
181d6902 | 524 | * queue initialization handlers |
837e7f24 ID |
525 | */ |
526 | void (*init_rxentry) (struct rt2x00_dev *rt2x00dev, | |
181d6902 | 527 | struct queue_entry *entry); |
837e7f24 | 528 | void (*init_txentry) (struct rt2x00_dev *rt2x00dev, |
181d6902 | 529 | struct queue_entry *entry); |
837e7f24 | 530 | |
95ea3627 ID |
531 | /* |
532 | * Radio control handlers. | |
533 | */ | |
534 | int (*set_device_state) (struct rt2x00_dev *rt2x00dev, | |
535 | enum dev_state state); | |
536 | int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev); | |
ebcf26da ID |
537 | void (*link_stats) (struct rt2x00_dev *rt2x00dev, |
538 | struct link_qual *qual); | |
95ea3627 ID |
539 | void (*reset_tuner) (struct rt2x00_dev *rt2x00dev); |
540 | void (*link_tuner) (struct rt2x00_dev *rt2x00dev); | |
541 | ||
542 | /* | |
543 | * TX control handlers | |
544 | */ | |
545 | void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev, | |
dd3193e1 | 546 | struct sk_buff *skb, |
61486e0f | 547 | struct txentry_desc *txdesc); |
6db3786a | 548 | int (*write_tx_data) (struct queue_entry *entry); |
bd88a781 | 549 | void (*write_beacon) (struct queue_entry *entry); |
b242e891 | 550 | int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev, |
dd9fa2d2 | 551 | struct sk_buff *skb); |
95ea3627 | 552 | void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev, |
e58c6aca | 553 | const enum data_queue_qid queue); |
95ea3627 ID |
554 | |
555 | /* | |
556 | * RX control handlers | |
557 | */ | |
181d6902 ID |
558 | void (*fill_rxdone) (struct queue_entry *entry, |
559 | struct rxdone_entry_desc *rxdesc); | |
95ea3627 ID |
560 | |
561 | /* | |
562 | * Configuration handlers. | |
563 | */ | |
2bb057d0 ID |
564 | int (*config_shared_key) (struct rt2x00_dev *rt2x00dev, |
565 | struct rt2x00lib_crypto *crypto, | |
566 | struct ieee80211_key_conf *key); | |
567 | int (*config_pairwise_key) (struct rt2x00_dev *rt2x00dev, | |
568 | struct rt2x00lib_crypto *crypto, | |
569 | struct ieee80211_key_conf *key); | |
3a643d24 ID |
570 | void (*config_filter) (struct rt2x00_dev *rt2x00dev, |
571 | const unsigned int filter_flags); | |
6bb40dd1 ID |
572 | void (*config_intf) (struct rt2x00_dev *rt2x00dev, |
573 | struct rt2x00_intf *intf, | |
574 | struct rt2x00intf_conf *conf, | |
575 | const unsigned int flags); | |
576 | #define CONFIG_UPDATE_TYPE ( 1 << 1 ) | |
577 | #define CONFIG_UPDATE_MAC ( 1 << 2 ) | |
578 | #define CONFIG_UPDATE_BSSID ( 1 << 3 ) | |
579 | ||
3a643d24 ID |
580 | void (*config_erp) (struct rt2x00_dev *rt2x00dev, |
581 | struct rt2x00lib_erp *erp); | |
e4ea1c40 ID |
582 | void (*config_ant) (struct rt2x00_dev *rt2x00dev, |
583 | struct antenna_setup *ant); | |
6bb40dd1 ID |
584 | void (*config) (struct rt2x00_dev *rt2x00dev, |
585 | struct rt2x00lib_conf *libconf, | |
e4ea1c40 | 586 | const unsigned int changed_flags); |
95ea3627 ID |
587 | }; |
588 | ||
589 | /* | |
590 | * rt2x00 driver callback operation structure. | |
591 | */ | |
592 | struct rt2x00_ops { | |
593 | const char *name; | |
6bb40dd1 ID |
594 | const unsigned int max_sta_intf; |
595 | const unsigned int max_ap_intf; | |
95ea3627 ID |
596 | const unsigned int eeprom_size; |
597 | const unsigned int rf_size; | |
61448f88 | 598 | const unsigned int tx_queues; |
181d6902 ID |
599 | const struct data_queue_desc *rx; |
600 | const struct data_queue_desc *tx; | |
601 | const struct data_queue_desc *bcn; | |
602 | const struct data_queue_desc *atim; | |
95ea3627 ID |
603 | const struct rt2x00lib_ops *lib; |
604 | const struct ieee80211_ops *hw; | |
605 | #ifdef CONFIG_RT2X00_LIB_DEBUGFS | |
606 | const struct rt2x00debug *debugfs; | |
607 | #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ | |
608 | }; | |
609 | ||
483272f5 ID |
610 | /* |
611 | * rt2x00 device flags | |
612 | */ | |
613 | enum rt2x00_flags { | |
614 | /* | |
615 | * Device state flags | |
616 | */ | |
0262ab0d ID |
617 | DEVICE_STATE_PRESENT, |
618 | DEVICE_STATE_REGISTERED_HW, | |
619 | DEVICE_STATE_INITIALIZED, | |
620 | DEVICE_STATE_STARTED, | |
621 | DEVICE_STATE_STARTED_SUSPEND, | |
622 | DEVICE_STATE_ENABLED_RADIO, | |
623 | DEVICE_STATE_DISABLED_RADIO_HW, | |
483272f5 ID |
624 | |
625 | /* | |
2bb057d0 | 626 | * Driver requirements |
483272f5 ID |
627 | */ |
628 | DRIVER_REQUIRE_FIRMWARE, | |
181d6902 ID |
629 | DRIVER_REQUIRE_BEACON_GUARD, |
630 | DRIVER_REQUIRE_ATIM_QUEUE, | |
3a643d24 | 631 | DRIVER_REQUIRE_SCHEDULED, |
c4da0048 | 632 | DRIVER_REQUIRE_DMA, |
483272f5 ID |
633 | |
634 | /* | |
2bb057d0 | 635 | * Driver features |
483272f5 ID |
636 | */ |
637 | CONFIG_SUPPORT_HW_BUTTON, | |
2bb057d0 ID |
638 | CONFIG_SUPPORT_HW_CRYPTO, |
639 | ||
640 | /* | |
641 | * Driver configuration | |
642 | */ | |
483272f5 ID |
643 | CONFIG_FRAME_TYPE, |
644 | CONFIG_RF_SEQUENCE, | |
645 | CONFIG_EXTERNAL_LNA_A, | |
646 | CONFIG_EXTERNAL_LNA_BG, | |
647 | CONFIG_DOUBLE_ANTENNA, | |
648 | CONFIG_DISABLE_LINK_TUNING, | |
649 | }; | |
650 | ||
95ea3627 ID |
651 | /* |
652 | * rt2x00 device structure. | |
653 | */ | |
654 | struct rt2x00_dev { | |
655 | /* | |
656 | * Device structure. | |
657 | * The structure stored in here depends on the | |
658 | * system bus (PCI or USB). | |
659 | * When accessing this variable, the rt2x00dev_{pci,usb} | |
660 | * macro's should be used for correct typecasting. | |
661 | */ | |
14a3bf89 | 662 | struct device *dev; |
95ea3627 ID |
663 | |
664 | /* | |
665 | * Callback functions. | |
666 | */ | |
667 | const struct rt2x00_ops *ops; | |
668 | ||
669 | /* | |
670 | * IEEE80211 control structure. | |
671 | */ | |
672 | struct ieee80211_hw *hw; | |
8318d78a JB |
673 | struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS]; |
674 | enum ieee80211_band curr_band; | |
95ea3627 ID |
675 | |
676 | /* | |
677 | * rfkill structure for RF state switching support. | |
678 | * This will only be compiled in when required. | |
679 | */ | |
680 | #ifdef CONFIG_RT2X00_LIB_RFKILL | |
3480a58a | 681 | unsigned long rfkill_state; |
1682fe6d ID |
682 | #define RFKILL_STATE_ALLOCATED 1 |
683 | #define RFKILL_STATE_REGISTERED 2 | |
95ea3627 | 684 | struct rfkill *rfkill; |
50db7875 | 685 | struct delayed_work rfkill_work; |
95ea3627 ID |
686 | #endif /* CONFIG_RT2X00_LIB_RFKILL */ |
687 | ||
688 | /* | |
689 | * If enabled, the debugfs interface structures | |
690 | * required for deregistration of debugfs. | |
691 | */ | |
692 | #ifdef CONFIG_RT2X00_LIB_DEBUGFS | |
4d8dd66c | 693 | struct rt2x00debug_intf *debugfs_intf; |
95ea3627 ID |
694 | #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ |
695 | ||
a9450b70 ID |
696 | /* |
697 | * LED structure for changing the LED status | |
698 | * by mac8011 or the kernel. | |
699 | */ | |
700 | #ifdef CONFIG_RT2X00_LIB_LEDS | |
a9450b70 ID |
701 | struct rt2x00_led led_radio; |
702 | struct rt2x00_led led_assoc; | |
703 | struct rt2x00_led led_qual; | |
704 | u16 led_mcu_reg; | |
705 | #endif /* CONFIG_RT2X00_LIB_LEDS */ | |
706 | ||
95ea3627 ID |
707 | /* |
708 | * Device flags. | |
709 | * In these flags the current status and some | |
710 | * of the device capabilities are stored. | |
711 | */ | |
712 | unsigned long flags; | |
95ea3627 ID |
713 | |
714 | /* | |
715 | * Chipset identification. | |
716 | */ | |
717 | struct rt2x00_chip chip; | |
718 | ||
719 | /* | |
720 | * hw capability specifications. | |
721 | */ | |
722 | struct hw_mode_spec spec; | |
723 | ||
addc81bd ID |
724 | /* |
725 | * This is the default TX/RX antenna setup as indicated | |
726 | * by the device's EEPROM. When mac80211 sets its | |
727 | * antenna value to 0 we should be using these values. | |
728 | */ | |
729 | struct antenna_setup default_ant; | |
730 | ||
95ea3627 ID |
731 | /* |
732 | * Register pointers | |
21795094 ID |
733 | * csr.base: CSR base register address. (PCI) |
734 | * csr.cache: CSR cache for usb_control_msg. (USB) | |
95ea3627 | 735 | */ |
21795094 ID |
736 | union csr { |
737 | void __iomem *base; | |
738 | void *cache; | |
739 | } csr; | |
95ea3627 | 740 | |
3d82346c AB |
741 | /* |
742 | * Mutex to protect register accesses on USB devices. | |
743 | * There are 2 reasons this is needed, one is to ensure | |
744 | * use of the csr_cache (for USB devices) by one thread | |
745 | * isn't corrupted by another thread trying to access it. | |
746 | * The other is that access to BBP and RF registers | |
747 | * require multiple BUS transactions and if another thread | |
748 | * attempted to access one of those registers at the same | |
749 | * time one of the writes could silently fail. | |
750 | */ | |
751 | struct mutex usb_cache_mutex; | |
752 | ||
3c4f2085 ID |
753 | /* |
754 | * Current packet filter configuration for the device. | |
755 | * This contains all currently active FIF_* flags send | |
756 | * to us by mac80211 during configure_filter(). | |
757 | */ | |
758 | unsigned int packet_filter; | |
759 | ||
95ea3627 | 760 | /* |
6bb40dd1 ID |
761 | * Interface details: |
762 | * - Open ap interface count. | |
763 | * - Open sta interface count. | |
764 | * - Association count. | |
95ea3627 | 765 | */ |
6bb40dd1 ID |
766 | unsigned int intf_ap_count; |
767 | unsigned int intf_sta_count; | |
768 | unsigned int intf_associated; | |
95ea3627 ID |
769 | |
770 | /* | |
771 | * Link quality | |
772 | */ | |
773 | struct link link; | |
774 | ||
775 | /* | |
776 | * EEPROM data. | |
777 | */ | |
778 | __le16 *eeprom; | |
779 | ||
780 | /* | |
781 | * Active RF register values. | |
782 | * These are stored here so we don't need | |
783 | * to read the rf registers and can directly | |
784 | * use this value instead. | |
785 | * This field should be accessed by using | |
786 | * rt2x00_rf_read() and rt2x00_rf_write(). | |
787 | */ | |
788 | u32 *rf; | |
789 | ||
ba2ab471 ID |
790 | /* |
791 | * LNA gain | |
792 | */ | |
793 | short lna_gain; | |
794 | ||
b242e891 ID |
795 | /* |
796 | * USB Max frame size (for rt2500usb & rt73usb). | |
797 | */ | |
798 | u16 usb_maxpacket; | |
799 | ||
95ea3627 ID |
800 | /* |
801 | * Current TX power value. | |
802 | */ | |
803 | u16 tx_power; | |
804 | ||
95ea3627 ID |
805 | /* |
806 | * Rssi <-> Dbm offset | |
807 | */ | |
808 | u8 rssi_offset; | |
809 | ||
810 | /* | |
811 | * Frequency offset (for rt61pci & rt73usb). | |
812 | */ | |
813 | u8 freq_offset; | |
814 | ||
815 | /* | |
816 | * Low level statistics which will have | |
817 | * to be kept up to date while device is running. | |
818 | */ | |
819 | struct ieee80211_low_level_stats low_level_stats; | |
820 | ||
821 | /* | |
822 | * RX configuration information. | |
823 | */ | |
824 | struct ieee80211_rx_status rx_status; | |
825 | ||
826 | /* | |
4150c572 | 827 | * Scheduled work. |
8e260c22 ID |
828 | * NOTE: intf_work will use ieee80211_iterate_active_interfaces() |
829 | * which means it cannot be placed on the hw->workqueue | |
830 | * due to RTNL locking requirements. | |
95ea3627 | 831 | */ |
6bb40dd1 | 832 | struct work_struct intf_work; |
4150c572 | 833 | struct work_struct filter_work; |
95ea3627 ID |
834 | |
835 | /* | |
181d6902 ID |
836 | * Data queue arrays for RX, TX and Beacon. |
837 | * The Beacon array also contains the Atim queue | |
95ea3627 ID |
838 | * if that is supported by the device. |
839 | */ | |
b869767b | 840 | unsigned int data_queues; |
181d6902 ID |
841 | struct data_queue *rx; |
842 | struct data_queue *tx; | |
843 | struct data_queue *bcn; | |
95ea3627 ID |
844 | |
845 | /* | |
846 | * Firmware image. | |
847 | */ | |
848 | const struct firmware *fw; | |
849 | }; | |
850 | ||
95ea3627 ID |
851 | /* |
852 | * Generic RF access. | |
853 | * The RF is being accessed by word index. | |
854 | */ | |
0e14f6d3 | 855 | static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
856 | const unsigned int word, u32 *data) |
857 | { | |
858 | *data = rt2x00dev->rf[word]; | |
859 | } | |
860 | ||
0e14f6d3 | 861 | static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
862 | const unsigned int word, u32 data) |
863 | { | |
864 | rt2x00dev->rf[word] = data; | |
865 | } | |
866 | ||
867 | /* | |
868 | * Generic EEPROM access. | |
869 | * The EEPROM is being accessed by word index. | |
870 | */ | |
0e14f6d3 | 871 | static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
872 | const unsigned int word) |
873 | { | |
874 | return (void *)&rt2x00dev->eeprom[word]; | |
875 | } | |
876 | ||
0e14f6d3 | 877 | static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
878 | const unsigned int word, u16 *data) |
879 | { | |
880 | *data = le16_to_cpu(rt2x00dev->eeprom[word]); | |
881 | } | |
882 | ||
0e14f6d3 | 883 | static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
884 | const unsigned int word, u16 data) |
885 | { | |
886 | rt2x00dev->eeprom[word] = cpu_to_le16(data); | |
887 | } | |
888 | ||
889 | /* | |
890 | * Chipset handlers | |
891 | */ | |
892 | static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev, | |
893 | const u16 rt, const u16 rf, const u32 rev) | |
894 | { | |
895 | INFO(rt2x00dev, | |
896 | "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n", | |
897 | rt, rf, rev); | |
898 | ||
899 | rt2x00dev->chip.rt = rt; | |
900 | rt2x00dev->chip.rf = rf; | |
901 | rt2x00dev->chip.rev = rev; | |
902 | } | |
903 | ||
904 | static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip) | |
905 | { | |
906 | return (chipset->rt == chip); | |
907 | } | |
908 | ||
909 | static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip) | |
910 | { | |
911 | return (chipset->rf == chip); | |
912 | } | |
913 | ||
755a957d | 914 | static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset) |
95ea3627 ID |
915 | { |
916 | return chipset->rev; | |
917 | } | |
918 | ||
755a957d ID |
919 | static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset, |
920 | const u32 rev) | |
95ea3627 | 921 | { |
755a957d ID |
922 | return (((chipset->rev & 0xffff0) == rev) && |
923 | !!(chipset->rev & 0x0000f)); | |
95ea3627 ID |
924 | } |
925 | ||
926 | /* | |
927 | * Duration calculations | |
928 | * The rate variable passed is: 100kbs. | |
929 | * To convert from bytes to bits we multiply size with 8, | |
930 | * then the size is multiplied with 10 to make the | |
931 | * real rate -> rate argument correction. | |
932 | */ | |
933 | static inline u16 get_duration(const unsigned int size, const u8 rate) | |
934 | { | |
935 | return ((size * 8 * 10) / rate); | |
936 | } | |
937 | ||
938 | static inline u16 get_duration_res(const unsigned int size, const u8 rate) | |
939 | { | |
940 | return ((size * 8 * 10) % rate); | |
941 | } | |
942 | ||
239c249d | 943 | /** |
c4da0048 GW |
944 | * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes. |
945 | * @rt2x00dev: Pointer to &struct rt2x00_dev. | |
946 | * @skb: The skb to map. | |
239c249d | 947 | */ |
c4da0048 | 948 | void rt2x00queue_map_txskb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb); |
239c249d | 949 | |
181d6902 | 950 | /** |
e58c6aca | 951 | * rt2x00queue_get_queue - Convert queue index to queue pointer |
181d6902 | 952 | * @rt2x00dev: Pointer to &struct rt2x00_dev. |
e58c6aca | 953 | * @queue: rt2x00 queue index (see &enum data_queue_qid). |
95ea3627 | 954 | */ |
181d6902 | 955 | struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev, |
e58c6aca | 956 | const enum data_queue_qid queue); |
181d6902 ID |
957 | |
958 | /** | |
959 | * rt2x00queue_get_entry - Get queue entry where the given index points to. | |
9a46d44e | 960 | * @queue: Pointer to &struct data_queue from where we obtain the entry. |
181d6902 ID |
961 | * @index: Index identifier for obtaining the correct index. |
962 | */ | |
963 | struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue, | |
964 | enum queue_index index); | |
965 | ||
95ea3627 ID |
966 | /* |
967 | * Interrupt context handlers. | |
968 | */ | |
969 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev); | |
181d6902 ID |
970 | void rt2x00lib_txdone(struct queue_entry *entry, |
971 | struct txdone_entry_desc *txdesc); | |
c4da0048 GW |
972 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
973 | struct queue_entry *entry); | |
95ea3627 | 974 | |
95ea3627 ID |
975 | /* |
976 | * mac80211 handlers. | |
977 | */ | |
e039fa4a | 978 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb); |
95ea3627 ID |
979 | int rt2x00mac_start(struct ieee80211_hw *hw); |
980 | void rt2x00mac_stop(struct ieee80211_hw *hw); | |
981 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
982 | struct ieee80211_if_init_conf *conf); | |
983 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
984 | struct ieee80211_if_init_conf *conf); | |
e8975581 | 985 | int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed); |
32bfd35d JB |
986 | int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
987 | struct ieee80211_vif *vif, | |
95ea3627 | 988 | struct ieee80211_if_conf *conf); |
3a643d24 ID |
989 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
990 | unsigned int changed_flags, | |
991 | unsigned int *total_flags, | |
992 | int mc_count, struct dev_addr_list *mc_list); | |
2bb057d0 ID |
993 | #ifdef CONFIG_RT2X00_LIB_CRYPTO |
994 | int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
995 | const u8 *local_address, const u8 *address, | |
996 | struct ieee80211_key_conf *key); | |
997 | #else | |
998 | #define rt2x00mac_set_key NULL | |
999 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
95ea3627 ID |
1000 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
1001 | struct ieee80211_low_level_stats *stats); | |
1002 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
1003 | struct ieee80211_tx_queue_stats *stats); | |
471b3efd JB |
1004 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
1005 | struct ieee80211_vif *vif, | |
1006 | struct ieee80211_bss_conf *bss_conf, | |
1007 | u32 changes); | |
e100bb64 | 1008 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
95ea3627 ID |
1009 | const struct ieee80211_tx_queue_params *params); |
1010 | ||
1011 | /* | |
1012 | * Driver allocation handlers. | |
1013 | */ | |
1014 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev); | |
1015 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev); | |
1016 | #ifdef CONFIG_PM | |
1017 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state); | |
1018 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev); | |
1019 | #endif /* CONFIG_PM */ | |
1020 | ||
1021 | #endif /* RT2X00_H */ |