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[PATCH] rt2x00: Store "STARTED" state during suspend
[deliverable/linux.git] / drivers / net / wireless / rt2x00 / rt2x00.h
CommitLineData
95ea3627
ID		 1/*
2 Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
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>
30#include <linux/prefetch.h>
31#include <linux/skbuff.h>
32#include <linux/workqueue.h>
33#include <linux/firmware.h>
34
35#include <net/mac80211.h>
36
37#include "rt2x00debug.h"
38#include "rt2x00reg.h"
39#include "rt2x00ring.h"
40
41/*
42 * Module information.
43 * DRV_NAME should be set within the individual module source files.
44 */
3a1532f2 45#define DRV_VERSION "2.0.9"
95ea3627
ID		 46#define DRV_PROJECT "http://rt2x00.serialmonkey.com"
47
48/*
49 * Debug definitions.
50 * Debug output has to be enabled during compile time.
51 */
52#define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \
53 printk(__kernlvl "%s -> %s: %s - " __msg, \
54 wiphy_name((__dev)->hw->wiphy), __FUNCTION__, __lvl, ##__args)
55
56#define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \
57 printk(__kernlvl "%s -> %s: %s - " __msg, \
58 DRV_NAME, __FUNCTION__, __lvl, ##__args)
59
60#ifdef CONFIG_RT2X00_DEBUG
61#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
62 DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args);
63#else
64#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
65 do { } while (0)
66#endif /* CONFIG_RT2X00_DEBUG */
67
68/*
69 * Various debug levels.
70 * The debug levels PANIC and ERROR both indicate serious problems,
71 * for this reason they should never be ignored.
72 * The special ERROR_PROBE message is for messages that are generated
73 * when the rt2x00_dev is not yet initialized.
74 */
75#define PANIC(__dev, __msg, __args...) \
76 DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
77#define ERROR(__dev, __msg, __args...) \
78 DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
79#define ERROR_PROBE(__msg, __args...) \
80 DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
81#define WARNING(__dev, __msg, __args...) \
82 DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
83#define NOTICE(__dev, __msg, __args...) \
84 DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
85#define INFO(__dev, __msg, __args...) \
86 DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
87#define DEBUG(__dev, __msg, __args...) \
88 DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
89#define EEPROM(__dev, __msg, __args...) \
90 DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
91
92/*
93 * Ring sizes.
94 * Ralink PCI devices demand the Frame size to be a multiple of 128 bytes.
95 * DATA_FRAME_SIZE is used for TX, RX, ATIM and PRIO rings.
96 * MGMT_FRAME_SIZE is used for the BEACON ring.
97 */
98#define DATA_FRAME_SIZE 2432
99#define MGMT_FRAME_SIZE 256
100
101/*
102 * Number of entries in a packet ring.
103 * PCI devices only need 1 Beacon entry,
104 * but USB devices require a second because they
105 * have to send a Guardian byte first.
106 */
107#define RX_ENTRIES 12
108#define TX_ENTRIES 12
109#define ATIM_ENTRIES 1
110#define BEACON_ENTRIES 2
111
112/*
113 * Standard timing and size defines.
114 * These values should follow the ieee80211 specifications.
115 */
116#define ACK_SIZE 14
117#define IEEE80211_HEADER 24
118#define PLCP 48
119#define BEACON 100
120#define PREAMBLE 144
121#define SHORT_PREAMBLE 72
122#define SLOT_TIME 20
123#define SHORT_SLOT_TIME 9
124#define SIFS 10
125#define PIFS ( SIFS + SLOT_TIME )
126#define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
127#define DIFS ( PIFS + SLOT_TIME )
128#define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
129#define EIFS ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) )
130
131/*
132 * IEEE802.11 header defines
133 */
134static inline int is_rts_frame(u16 fc)
135{
136 return !!(((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
137 ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_RTS));
138}
139
140static inline int is_cts_frame(u16 fc)
141{
142 return !!(((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
143 ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_CTS));
144}
145
146static inline int is_probe_resp(u16 fc)
147{
148 return !!(((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
149 ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP));
150}
151
152/*
153 * Chipset identification
154 * The chipset on the device is composed of a RT and RF chip.
155 * The chipset combination is important for determining device capabilities.
156 */
157struct rt2x00_chip {
158 u16 rt;
159#define RT2460 0x0101
160#define RT2560 0x0201
161#define RT2570 0x1201
12dadb90
ID		 162#define RT2561s 0x0301 /* Turbo */
163#define RT2561 0x0302
95ea3627
ID		 164#define RT2661 0x0401
165#define RT2571 0x1300
166
167 u16 rf;
168 u32 rev;
169};
170
171/*
172 * RF register values that belong to a particular channel.
173 */
174struct rf_channel {
175 int channel;
176 u32 rf1;
177 u32 rf2;
178 u32 rf3;
179 u32 rf4;
180};
181
182/*
183 * To optimize the quality of the link we need to store
184 * the quality of received frames and periodically
185 * optimize the link.
186 */
187struct link {
188 /*
189 * Link tuner counter
190 * The number of times the link has been tuned
191 * since the radio has been switched on.
192 */
193 u32 count;
194
195 /*
196 * Statistics required for Link tuning.
197 * For the average RSSI value we use the "Walking average" approach.
198 * When adding RSSI to the average value the following calculation
199 * is needed:
200 *
201 * avg_rssi = ((avg_rssi * 7) + rssi) / 8;
202 *
203 * The advantage of this approach is that we only need 1 variable
204 * to store the average in (No need for a count and a total).
205 * But more importantly, normal average values will over time
206 * move less and less towards newly added values this results
207 * that with link tuning, the device can have a very good RSSI
208 * for a few minutes but when the device is moved away from the AP
209 * the average will not decrease fast enough to compensate.
210 * The walking average compensates this and will move towards
211 * the new values correctly allowing a effective link tuning.
212 */
213 int avg_rssi;
214 int vgc_level;
215 int false_cca;
216
217 /*
218 * Statistics required for Signal quality calculation.
219 * For calculating the Signal quality we have to determine
220 * the total number of success and failed RX and TX frames.
221 * After that we also use the average RSSI value to help
222 * determining the signal quality.
223 * For the calculation we will use the following algorithm:
224 *
225 * rssi_percentage = (avg_rssi * 100) / rssi_offset
226 * rx_percentage = (rx_success * 100) / rx_total
227 * tx_percentage = (tx_success * 100) / tx_total
228 * avg_signal = ((WEIGHT_RSSI * avg_rssi) +
229 * (WEIGHT_TX * tx_percentage) +
230 * (WEIGHT_RX * rx_percentage)) / 100
231 *
232 * This value should then be checked to not be greated then 100.
233 */
234 int rx_percentage;
235 int rx_success;
236 int rx_failed;
237 int tx_percentage;
238 int tx_success;
239 int tx_failed;
240#define WEIGHT_RSSI 20
241#define WEIGHT_RX 40
242#define WEIGHT_TX 40
243
244 /*
245 * Work structure for scheduling periodic link tuning.
246 */
247 struct delayed_work work;
248};
249
250/*
251 * Clear all counters inside the link structure.
252 * This can be easiest achieved by memsetting everything
253 * except for the work structure at the end.
254 */
255static inline void rt2x00_clear_link(struct link *link)
256{
257 memset(link, 0x00, sizeof(*link) - sizeof(link->work));
258 link->rx_percentage = 50;
259 link->tx_percentage = 50;
260}
261
262/*
263 * Update the rssi using the walking average approach.
264 */
265static inline void rt2x00_update_link_rssi(struct link *link, int rssi)
266{
267 if (!link->avg_rssi)
268 link->avg_rssi = rssi;
269 else
270 link->avg_rssi = ((link->avg_rssi * 7) + rssi) / 8;
271}
272
273/*
274 * When the avg_rssi is unset or no frames have been received),
275 * we need to return the default value which needs to be less
276 * than -80 so the device will select the maximum sensitivity.
277 */
278static inline int rt2x00_get_link_rssi(struct link *link)
279{
280 return (link->avg_rssi && link->rx_success) ? link->avg_rssi : -128;
281}
282
283/*
284 * Interface structure
285 * Configuration details about the current interface.
286 */
287struct interface {
288 /*
289 * Interface identification. The value is assigned
290 * to us by the 80211 stack, and is used to request
291 * new beacons.
292 */
293 int id;
294
295 /*
296 * Current working type (IEEE80211_IF_TYPE_*).
95ea3627
ID		 297 * When set to INVALID_INTERFACE, no interface is configured.
298 */
299 int type;
a2897552 300#define INVALID_INTERFACE IEEE80211_IF_TYPE_INVALID
95ea3627
ID		 301
302 /*
303 * MAC of the device.
304 */
305 u8 mac[ETH_ALEN];
306
307 /*
308 * BBSID of the AP to associate with.
309 */
310 u8 bssid[ETH_ALEN];
311
312 /*
313 * Store the packet filter mode for the current interface.
95ea3627 314 */
4150c572 315 unsigned int filter;
95ea3627
ID		 316};
317
318static inline int is_interface_present(struct interface *intf)
319{
320 return !!intf->id;
321}
322
4150c572 323static inline int is_interface_type(struct interface *intf, int type)
95ea3627 324{
4150c572 325 return intf->type == type;
95ea3627
ID		 326}
327
328/*
329 * Details about the supported modes, rates and channels
330 * of a particular chipset. This is used by rt2x00lib
331 * to build the ieee80211_hw_mode array for mac80211.
332 */
333struct hw_mode_spec {
334 /*
335 * Number of modes, rates and channels.
336 */
337 int num_modes;
338 int num_rates;
339 int num_channels;
340
341 /*
342 * txpower values.
343 */
344 const u8 *tx_power_a;
345 const u8 *tx_power_bg;
346 u8 tx_power_default;
347
348 /*
349 * Device/chipset specific value.
350 */
351 const struct rf_channel *channels;
352};
353
354/*
355 * rt2x00lib callback functions.
356 */
357struct rt2x00lib_ops {
358 /*
359 * Interrupt handlers.
360 */
361 irq_handler_t irq_handler;
362
363 /*
364 * Device init handlers.
365 */
366 int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
367 char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
368 int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data,
369 const size_t len);
370
371 /*
372 * Device initialization/deinitialization handlers.
373 */
374 int (*initialize) (struct rt2x00_dev *rt2x00dev);
375 void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
376
377 /*
378 * Radio control handlers.
379 */
380 int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
381 enum dev_state state);
382 int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
383 void (*link_stats) (struct rt2x00_dev *rt2x00dev);
384 void (*reset_tuner) (struct rt2x00_dev *rt2x00dev);
385 void (*link_tuner) (struct rt2x00_dev *rt2x00dev);
386
387 /*
388 * TX control handlers
389 */
390 void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev,
391 struct data_desc *txd,
4150c572 392 struct txdata_entry_desc *desc,
95ea3627
ID		 393 struct ieee80211_hdr *ieee80211hdr,
394 unsigned int length,
395 struct ieee80211_tx_control *control);
396 int (*write_tx_data) (struct rt2x00_dev *rt2x00dev,
397 struct data_ring *ring, struct sk_buff *skb,
398 struct ieee80211_tx_control *control);
399 void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
400 unsigned int queue);
401
402 /*
403 * RX control handlers
404 */
4150c572
JB		 405 void (*fill_rxdone) (struct data_entry *entry,
406 struct rxdata_entry_desc *desc);
95ea3627
ID		 407
408 /*
409 * Configuration handlers.
410 */
4abee4bb
ID		 411 void (*config_mac_addr) (struct rt2x00_dev *rt2x00dev, __le32 *mac);
412 void (*config_bssid) (struct rt2x00_dev *rt2x00dev, __le32 *bssid);
95ea3627
ID		 413 void (*config_packet_filter) (struct rt2x00_dev *rt2x00dev,
414 const unsigned int filter);
415 void (*config_type) (struct rt2x00_dev *rt2x00dev, const int type);
416 void (*config) (struct rt2x00_dev *rt2x00dev, const unsigned int flags,
417 struct ieee80211_conf *conf);
418#define CONFIG_UPDATE_PHYMODE ( 1 << 1 )
419#define CONFIG_UPDATE_CHANNEL ( 1 << 2 )
420#define CONFIG_UPDATE_TXPOWER ( 1 << 3 )
421#define CONFIG_UPDATE_ANTENNA ( 1 << 4 )
422#define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 )
423#define CONFIG_UPDATE_BEACON_INT ( 1 << 6 )
424#define CONFIG_UPDATE_ALL 0xffff
425};
426
427/*
428 * rt2x00 driver callback operation structure.
429 */
430struct rt2x00_ops {
431 const char *name;
432 const unsigned int rxd_size;
433 const unsigned int txd_size;
434 const unsigned int eeprom_size;
435 const unsigned int rf_size;
436 const struct rt2x00lib_ops *lib;
437 const struct ieee80211_ops *hw;
438#ifdef CONFIG_RT2X00_LIB_DEBUGFS
439 const struct rt2x00debug *debugfs;
440#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
441};
442
443/*
444 * rt2x00 device structure.
445 */
446struct rt2x00_dev {
447 /*
448 * Device structure.
449 * The structure stored in here depends on the
450 * system bus (PCI or USB).
451 * When accessing this variable, the rt2x00dev_{pci,usb}
452 * macro's should be used for correct typecasting.
453 */
454 void *dev;
455#define rt2x00dev_pci(__dev) ( (struct pci_dev*)(__dev)->dev )
456#define rt2x00dev_usb(__dev) ( (struct usb_interface*)(__dev)->dev )
457
458 /*
459 * Callback functions.
460 */
461 const struct rt2x00_ops *ops;
462
463 /*
464 * IEEE80211 control structure.
465 */
466 struct ieee80211_hw *hw;
467 struct ieee80211_hw_mode *hwmodes;
468 unsigned int curr_hwmode;
469#define HWMODE_B 0
470#define HWMODE_G 1
471#define HWMODE_A 2
472
473 /*
474 * rfkill structure for RF state switching support.
475 * This will only be compiled in when required.
476 */
477#ifdef CONFIG_RT2X00_LIB_RFKILL
478 struct rfkill *rfkill;
479 struct input_polled_dev *poll_dev;
480#endif /* CONFIG_RT2X00_LIB_RFKILL */
481
482 /*
483 * If enabled, the debugfs interface structures
484 * required for deregistration of debugfs.
485 */
486#ifdef CONFIG_RT2X00_LIB_DEBUGFS
487 const struct rt2x00debug_intf *debugfs_intf;
488#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
489
490 /*
491 * Device flags.
492 * In these flags the current status and some
493 * of the device capabilities are stored.
494 */
495 unsigned long flags;
066cb637
ID		 496#define DEVICE_PRESENT 1
497#define DEVICE_REGISTERED_HW 2
95ea3627 498#define DEVICE_INITIALIZED 3
066cb637
ID		 499#define DEVICE_STARTED 4
500#define DEVICE_ENABLED_RADIO 5
501#define DEVICE_ENABLED_RADIO_HW 6
502#define DRIVER_REQUIRE_FIRMWARE 7
503#define DRIVER_REQUIRE_BEACON_RING 8
504#define CONFIG_SUPPORT_HW_BUTTON 9
505#define CONFIG_FRAME_TYPE 10
506#define CONFIG_RF_SEQUENCE 11
507#define CONFIG_EXTERNAL_LNA_A 12
508#define CONFIG_EXTERNAL_LNA_BG 13
509#define CONFIG_DOUBLE_ANTENNA 14
510#define CONFIG_DISABLE_LINK_TUNING 15
6d7f9877 511#define DEVICE_STARTED_SUSPEND 16
95ea3627
ID		 512
513 /*
514 * Chipset identification.
515 */
516 struct rt2x00_chip chip;
517
518 /*
519 * hw capability specifications.
520 */
521 struct hw_mode_spec spec;
522
523 /*
524 * Register pointers
525 * csr_addr: Base register address. (PCI)
526 * csr_cache: CSR cache for usb_control_msg. (USB)
527 */
528 void __iomem *csr_addr;
529 void *csr_cache;
530
531 /*
532 * Interface configuration.
533 */
534 struct interface interface;
535
536 /*
537 * Link quality
538 */
539 struct link link;
540
541 /*
542 * EEPROM data.
543 */
544 __le16 *eeprom;
545
546 /*
547 * Active RF register values.
548 * These are stored here so we don't need
549 * to read the rf registers and can directly
550 * use this value instead.
551 * This field should be accessed by using
552 * rt2x00_rf_read() and rt2x00_rf_write().
553 */
554 u32 *rf;
555
556 /*
557 * Current TX power value.
558 */
559 u16 tx_power;
560
561 /*
562 * LED register (for rt61pci & rt73usb).
563 */
564 u16 led_reg;
565
566 /*
567 * Led mode (LED_MODE_*)
568 */
569 u8 led_mode;
570
571 /*
572 * Rssi <-> Dbm offset
573 */
574 u8 rssi_offset;
575
576 /*
577 * Frequency offset (for rt61pci & rt73usb).
578 */
579 u8 freq_offset;
580
581 /*
582 * Low level statistics which will have
583 * to be kept up to date while device is running.
584 */
585 struct ieee80211_low_level_stats low_level_stats;
586
587 /*
588 * RX configuration information.
589 */
590 struct ieee80211_rx_status rx_status;
591
592 /*
4150c572 593 * Scheduled work.
95ea3627
ID		 594 */
595 struct work_struct beacon_work;
4150c572 596 struct work_struct filter_work;
95ea3627
ID		 597
598 /*
599 * Data ring arrays for RX, TX and Beacon.
600 * The Beacon array also contains the Atim ring
601 * if that is supported by the device.
602 */
603 int data_rings;
604 struct data_ring *rx;
605 struct data_ring *tx;
606 struct data_ring *bcn;
607
608 /*
609 * Firmware image.
610 */
611 const struct firmware *fw;
612};
613
614/*
615 * For-each loop for the ring array.
616 * All rings have been allocated as a single array,
617 * this means we can create a very simply loop macro
618 * that is capable of looping through all rings.
619 * ring_end(), txring_end() and ring_loop() are helper macro's which
620 * should not be used directly. Instead the following should be used:
621 * ring_for_each() - Loops through all rings (RX, TX, Beacon & Atim)
622 * txring_for_each() - Loops through TX data rings (TX only)
623 * txringall_for_each() - Loops through all TX rings (TX, Beacon & Atim)
624 */
625#define ring_end(__dev) \
626 &(__dev)->rx[(__dev)->data_rings]
627
628#define txring_end(__dev) \
629 &(__dev)->tx[(__dev)->hw->queues]
630
631#define ring_loop(__entry, __start, __end) \
632 for ((__entry) = (__start); \
633 prefetch(&(__entry)[1]), (__entry) != (__end); \
634 (__entry) = &(__entry)[1])
635
636#define ring_for_each(__dev, __entry) \
637 ring_loop(__entry, (__dev)->rx, ring_end(__dev))
638
639#define txring_for_each(__dev, __entry) \
640 ring_loop(__entry, (__dev)->tx, txring_end(__dev))
641
642#define txringall_for_each(__dev, __entry) \
643 ring_loop(__entry, (__dev)->tx, ring_end(__dev))
644
645/*
646 * Generic RF access.
647 * The RF is being accessed by word index.
648 */
649static inline void rt2x00_rf_read(const struct rt2x00_dev *rt2x00dev,
650 const unsigned int word, u32 *data)
651{
652 *data = rt2x00dev->rf[word];
653}
654
655static inline void rt2x00_rf_write(const struct rt2x00_dev *rt2x00dev,
656 const unsigned int word, u32 data)
657{
658 rt2x00dev->rf[word] = data;
659}
660
661/*
662 * Generic EEPROM access.
663 * The EEPROM is being accessed by word index.
664 */
665static inline void *rt2x00_eeprom_addr(const struct rt2x00_dev *rt2x00dev,
666 const unsigned int word)
667{
668 return (void *)&rt2x00dev->eeprom[word];
669}
670
671static inline void rt2x00_eeprom_read(const struct rt2x00_dev *rt2x00dev,
672 const unsigned int word, u16 *data)
673{
674 *data = le16_to_cpu(rt2x00dev->eeprom[word]);
675}
676
677static inline void rt2x00_eeprom_write(const struct rt2x00_dev *rt2x00dev,
678 const unsigned int word, u16 data)
679{
680 rt2x00dev->eeprom[word] = cpu_to_le16(data);
681}
682
683/*
684 * Chipset handlers
685 */
686static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
687 const u16 rt, const u16 rf, const u32 rev)
688{
689 INFO(rt2x00dev,
690 "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n",
691 rt, rf, rev);
692
693 rt2x00dev->chip.rt = rt;
694 rt2x00dev->chip.rf = rf;
695 rt2x00dev->chip.rev = rev;
696}
697
698static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip)
699{
700 return (chipset->rt == chip);
701}
702
703static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip)
704{
705 return (chipset->rf == chip);
706}
707
708static inline u16 rt2x00_get_rev(const struct rt2x00_chip *chipset)
709{
710 return chipset->rev;
711}
712
713static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset, const u32 mask)
714{
715 return chipset->rev & mask;
716}
717
718/*
719 * Duration calculations
720 * The rate variable passed is: 100kbs.
721 * To convert from bytes to bits we multiply size with 8,
722 * then the size is multiplied with 10 to make the
723 * real rate -> rate argument correction.
724 */
725static inline u16 get_duration(const unsigned int size, const u8 rate)
726{
727 return ((size * 8 * 10) / rate);
728}
729
730static inline u16 get_duration_res(const unsigned int size, const u8 rate)
731{
732 return ((size * 8 * 10) % rate);
733}
734
735/*
736 * Library functions.
737 */
738struct data_ring *rt2x00lib_get_ring(struct rt2x00_dev *rt2x00dev,
739 const unsigned int queue);
740
741/*
742 * Interrupt context handlers.
743 */
744void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
745void rt2x00lib_txdone(struct data_entry *entry,
746 const int status, const int retry);
747void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
4150c572 748 struct rxdata_entry_desc *desc);
95ea3627
ID		 749
750/*
751 * TX descriptor initializer
752 */
753void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
754 struct data_desc *txd,
755 struct ieee80211_hdr *ieee80211hdr,
756 unsigned int length,
757 struct ieee80211_tx_control *control);
758
759/*
760 * mac80211 handlers.
761 */
762int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
763 struct ieee80211_tx_control *control);
764int rt2x00mac_start(struct ieee80211_hw *hw);
765void rt2x00mac_stop(struct ieee80211_hw *hw);
766int rt2x00mac_add_interface(struct ieee80211_hw *hw,
767 struct ieee80211_if_init_conf *conf);
768void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
769 struct ieee80211_if_init_conf *conf);
770int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
771int rt2x00mac_config_interface(struct ieee80211_hw *hw, int if_id,
772 struct ieee80211_if_conf *conf);
95ea3627
ID		 773int rt2x00mac_get_stats(struct ieee80211_hw *hw,
774 struct ieee80211_low_level_stats *stats);
775int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw,
776 struct ieee80211_tx_queue_stats *stats);
777int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue,
778 const struct ieee80211_tx_queue_params *params);
779
780/*
781 * Driver allocation handlers.
782 */
783int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
784void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
785#ifdef CONFIG_PM
786int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
787int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
788#endif /* CONFIG_PM */
789
790#endif /* RT2X00_H */
Linux kernel - Deliverables
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