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rt2x00: Detect initial rfkill state on register
[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 */
2d68de3e 45#define DRV_VERSION "2.0.11"
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{
ddc827f9
ID		 136 return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
137 ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_RTS));
95ea3627
ID		 138}
139
140static inline int is_cts_frame(u16 fc)
141{
ddc827f9
ID		 142 return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
143 ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_CTS));
95ea3627
ID		 144}
145
146static inline int is_probe_resp(u16 fc)
147{
ddc827f9
ID		 148 return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
149 ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP));
95ea3627
ID		 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
addc81bd
ID		 182/*
183 * Antenna setup values.
184 */
185struct antenna_setup {
186 enum antenna rx;
187 enum antenna tx;
188};
189
95ea3627 190/*
ebcf26da 191 * Quality statistics about the currently active link.
95ea3627 192 */
ebcf26da 193struct link_qual {
95ea3627
ID		 194 /*
195 * Statistics required for Link tuning.
196 * For the average RSSI value we use the "Walking average" approach.
197 * When adding RSSI to the average value the following calculation
198 * is needed:
199 *
200 * avg_rssi = ((avg_rssi * 7) + rssi) / 8;
201 *
202 * The advantage of this approach is that we only need 1 variable
203 * to store the average in (No need for a count and a total).
204 * But more importantly, normal average values will over time
205 * move less and less towards newly added values this results
206 * that with link tuning, the device can have a very good RSSI
207 * for a few minutes but when the device is moved away from the AP
208 * the average will not decrease fast enough to compensate.
209 * The walking average compensates this and will move towards
210 * the new values correctly allowing a effective link tuning.
211 */
212 int avg_rssi;
95ea3627
ID		 213 int false_cca;
214
215 /*
216 * Statistics required for Signal quality calculation.
217 * For calculating the Signal quality we have to determine
218 * the total number of success and failed RX and TX frames.
219 * After that we also use the average RSSI value to help
220 * determining the signal quality.
221 * For the calculation we will use the following algorithm:
222 *
223 * rssi_percentage = (avg_rssi * 100) / rssi_offset
224 * rx_percentage = (rx_success * 100) / rx_total
225 * tx_percentage = (tx_success * 100) / tx_total
226 * avg_signal = ((WEIGHT_RSSI * avg_rssi) +
227 * (WEIGHT_TX * tx_percentage) +
228 * (WEIGHT_RX * rx_percentage)) / 100
229 *
230 * This value should then be checked to not be greated then 100.
231 */
232 int rx_percentage;
233 int rx_success;
234 int rx_failed;
235 int tx_percentage;
236 int tx_success;
237 int tx_failed;
238#define WEIGHT_RSSI 20
239#define WEIGHT_RX 40
240#define WEIGHT_TX 40
ebcf26da
ID		 241};
242
69f81a2c
ID		 243/*
244 * Antenna settings about the currently active link.
245 */
246struct link_ant {
247 /*
248 * Antenna flags
249 */
250 unsigned int flags;
251#define ANTENNA_RX_DIVERSITY 0x00000001
252#define ANTENNA_TX_DIVERSITY 0x00000002
253#define ANTENNA_MODE_SAMPLE 0x00000004
254
255 /*
256 * Currently active TX/RX antenna setup.
257 * When software diversity is used, this will indicate
258 * which antenna is actually used at this time.
259 */
260 struct antenna_setup active;
261
262 /*
263 * RSSI information for the different antenna's.
264 * These statistics are used to determine when
265 * to switch antenna when using software diversity.
266 *
267 * rssi[0] -> Antenna A RSSI
268 * rssi[1] -> Antenna B RSSI
269 */
270 int rssi_history[2];
271
272 /*
273 * Current RSSI average of the currently active antenna.
274 * Similar to the avg_rssi in the link_qual structure
275 * this value is updated by using the walking average.
276 */
277 int rssi_ant;
278};
279
ebcf26da
ID		 280/*
281 * To optimize the quality of the link we need to store
282 * the quality of received frames and periodically
283 * optimize the link.
284 */
285struct link {
286 /*
287 * Link tuner counter
288 * The number of times the link has been tuned
289 * since the radio has been switched on.
290 */
291 u32 count;
292
293 /*
294 * Quality measurement values.
295 */
296 struct link_qual qual;
297
addc81bd 298 /*
69f81a2c 299 * TX/RX antenna setup.
addc81bd 300 */
69f81a2c 301 struct link_ant ant;
addc81bd 302
ebcf26da
ID		 303 /*
304 * Active VGC level
305 */
306 int vgc_level;
95ea3627
ID		 307
308 /*
309 * Work structure for scheduling periodic link tuning.
310 */
311 struct delayed_work work;
312};
313
95ea3627 314/*
69f81a2c 315 * Small helper macro to work with moving/walking averages.
95ea3627 316 */
69f81a2c
ID		 317#define MOVING_AVERAGE(__avg, __val, __samples) \
318 ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) )
319
320/*
321 * When we lack RSSI information return something less then -80 to
322 * tell the driver to tune the device to maximum sensitivity.
323 */
324#define DEFAULT_RSSI ( -128 )
95ea3627
ID		 325
326/*
69f81a2c 327 * Link quality access functions.
95ea3627
ID		 328 */
329static inline int rt2x00_get_link_rssi(struct link *link)
330{
ebcf26da
ID		 331 if (link->qual.avg_rssi && link->qual.rx_success)
332 return link->qual.avg_rssi;
69f81a2c
ID		 333 return DEFAULT_RSSI;
334}
335
336static inline int rt2x00_get_link_ant_rssi(struct link *link)
337{
338 if (link->ant.rssi_ant && link->qual.rx_success)
339 return link->ant.rssi_ant;
340 return DEFAULT_RSSI;
341}
342
343static inline int rt2x00_get_link_ant_rssi_history(struct link *link,
344 enum antenna ant)
345{
346 if (link->ant.rssi_history[ant - ANTENNA_A])
347 return link->ant.rssi_history[ant - ANTENNA_A];
348 return DEFAULT_RSSI;
349}
350
351static inline int rt2x00_update_ant_rssi(struct link *link, int rssi)
352{
353 int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A];
354 link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi;
355 return old_rssi;
95ea3627
ID		 356}
357
358/*
359 * Interface structure
360 * Configuration details about the current interface.
361 */
362struct interface {
363 /*
364 * Interface identification. The value is assigned
365 * to us by the 80211 stack, and is used to request
366 * new beacons.
367 */
368 int id;
369
370 /*
371 * Current working type (IEEE80211_IF_TYPE_*).
95ea3627
ID		 372 * When set to INVALID_INTERFACE, no interface is configured.
373 */
374 int type;
a2897552 375#define INVALID_INTERFACE IEEE80211_IF_TYPE_INVALID
95ea3627
ID		 376
377 /*
378 * MAC of the device.
379 */
380 u8 mac[ETH_ALEN];
381
382 /*
383 * BBSID of the AP to associate with.
384 */
385 u8 bssid[ETH_ALEN];
386
387 /*
388 * Store the packet filter mode for the current interface.
95ea3627 389 */
4150c572 390 unsigned int filter;
95ea3627
ID		 391};
392
393static inline int is_interface_present(struct interface *intf)
394{
395 return !!intf->id;
396}
397
4150c572 398static inline int is_interface_type(struct interface *intf, int type)
95ea3627 399{
4150c572 400 return intf->type == type;
95ea3627
ID		 401}
402
403/*
404 * Details about the supported modes, rates and channels
405 * of a particular chipset. This is used by rt2x00lib
406 * to build the ieee80211_hw_mode array for mac80211.
407 */
408struct hw_mode_spec {
409 /*
410 * Number of modes, rates and channels.
411 */
412 int num_modes;
413 int num_rates;
414 int num_channels;
415
416 /*
417 * txpower values.
418 */
419 const u8 *tx_power_a;
420 const u8 *tx_power_bg;
421 u8 tx_power_default;
422
423 /*
424 * Device/chipset specific value.
425 */
426 const struct rf_channel *channels;
427};
428
5c58ee51
ID		 429/*
430 * Configuration structure wrapper around the
431 * mac80211 configuration structure.
432 * When mac80211 configures the driver, rt2x00lib
433 * can precalculate values which are equal for all
434 * rt2x00 drivers. Those values can be stored in here.
435 */
436struct rt2x00lib_conf {
437 struct ieee80211_conf *conf;
438 struct rf_channel rf;
439
addc81bd
ID		 440 struct antenna_setup ant;
441
5c58ee51
ID		 442 int phymode;
443
444 int basic_rates;
445 int slot_time;
446
447 short sifs;
448 short pifs;
449 short difs;
450 short eifs;
451};
452
95ea3627
ID		 453/*
454 * rt2x00lib callback functions.
455 */
456struct rt2x00lib_ops {
457 /*
458 * Interrupt handlers.
459 */
460 irq_handler_t irq_handler;
461
462 /*
463 * Device init handlers.
464 */
465 int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
466 char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
467 int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data,
468 const size_t len);
469
470 /*
471 * Device initialization/deinitialization handlers.
472 */
473 int (*initialize) (struct rt2x00_dev *rt2x00dev);
474 void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
475
476 /*
477 * Radio control handlers.
478 */
479 int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
480 enum dev_state state);
481 int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
ebcf26da
ID		 482 void (*link_stats) (struct rt2x00_dev *rt2x00dev,
483 struct link_qual *qual);
95ea3627
ID		 484 void (*reset_tuner) (struct rt2x00_dev *rt2x00dev);
485 void (*link_tuner) (struct rt2x00_dev *rt2x00dev);
486
487 /*
488 * TX control handlers
489 */
490 void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev,
491 struct data_desc *txd,
4150c572 492 struct txdata_entry_desc *desc,
95ea3627
ID		 493 struct ieee80211_hdr *ieee80211hdr,
494 unsigned int length,
495 struct ieee80211_tx_control *control);
496 int (*write_tx_data) (struct rt2x00_dev *rt2x00dev,
497 struct data_ring *ring, struct sk_buff *skb,
498 struct ieee80211_tx_control *control);
b242e891 499 int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
dd9fa2d2 500 struct sk_buff *skb);
95ea3627
ID		 501 void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
502 unsigned int queue);
503
504 /*
505 * RX control handlers
506 */
4150c572
JB		 507 void (*fill_rxdone) (struct data_entry *entry,
508 struct rxdata_entry_desc *desc);
95ea3627
ID		 509
510 /*
511 * Configuration handlers.
512 */
4abee4bb
ID		 513 void (*config_mac_addr) (struct rt2x00_dev *rt2x00dev, __le32 *mac);
514 void (*config_bssid) (struct rt2x00_dev *rt2x00dev, __le32 *bssid);
feb24691
ID		 515 void (*config_type) (struct rt2x00_dev *rt2x00dev, const int type,
516 const int tsf_sync);
5c58ee51
ID		 517 void (*config_preamble) (struct rt2x00_dev *rt2x00dev,
518 const int short_preamble,
519 const int ack_timeout,
520 const int ack_consume_time);
95ea3627 521 void (*config) (struct rt2x00_dev *rt2x00dev, const unsigned int flags,
5c58ee51 522 struct rt2x00lib_conf *libconf);
95ea3627
ID		 523#define CONFIG_UPDATE_PHYMODE ( 1 << 1 )
524#define CONFIG_UPDATE_CHANNEL ( 1 << 2 )
525#define CONFIG_UPDATE_TXPOWER ( 1 << 3 )
526#define CONFIG_UPDATE_ANTENNA ( 1 << 4 )
527#define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 )
528#define CONFIG_UPDATE_BEACON_INT ( 1 << 6 )
529#define CONFIG_UPDATE_ALL 0xffff
530};
531
532/*
533 * rt2x00 driver callback operation structure.
534 */
535struct rt2x00_ops {
536 const char *name;
537 const unsigned int rxd_size;
538 const unsigned int txd_size;
539 const unsigned int eeprom_size;
540 const unsigned int rf_size;
541 const struct rt2x00lib_ops *lib;
542 const struct ieee80211_ops *hw;
543#ifdef CONFIG_RT2X00_LIB_DEBUGFS
544 const struct rt2x00debug *debugfs;
545#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
546};
547
483272f5
ID		 548/*
549 * rt2x00 device flags
550 */
551enum rt2x00_flags {
552 /*
553 * Device state flags
554 */
555 DEVICE_PRESENT,
556 DEVICE_REGISTERED_HW,
557 DEVICE_INITIALIZED,
558 DEVICE_STARTED,
559 DEVICE_STARTED_SUSPEND,
560 DEVICE_ENABLED_RADIO,
81873e9c 561 DEVICE_DISABLED_RADIO_HW,
483272f5
ID		 562
563 /*
564 * Driver features
565 */
566 DRIVER_REQUIRE_FIRMWARE,
567 DRIVER_REQUIRE_BEACON_RING,
568
569 /*
570 * Driver configuration
571 */
572 CONFIG_SUPPORT_HW_BUTTON,
573 CONFIG_FRAME_TYPE,
574 CONFIG_RF_SEQUENCE,
575 CONFIG_EXTERNAL_LNA_A,
576 CONFIG_EXTERNAL_LNA_BG,
577 CONFIG_DOUBLE_ANTENNA,
578 CONFIG_DISABLE_LINK_TUNING,
5c58ee51 579 CONFIG_SHORT_PREAMBLE,
483272f5
ID		 580};
581
95ea3627
ID		 582/*
583 * rt2x00 device structure.
584 */
585struct rt2x00_dev {
586 /*
587 * Device structure.
588 * The structure stored in here depends on the
589 * system bus (PCI or USB).
590 * When accessing this variable, the rt2x00dev_{pci,usb}
591 * macro's should be used for correct typecasting.
592 */
593 void *dev;
594#define rt2x00dev_pci(__dev) ( (struct pci_dev*)(__dev)->dev )
595#define rt2x00dev_usb(__dev) ( (struct usb_interface*)(__dev)->dev )
596
597 /*
598 * Callback functions.
599 */
600 const struct rt2x00_ops *ops;
601
602 /*
603 * IEEE80211 control structure.
604 */
605 struct ieee80211_hw *hw;
606 struct ieee80211_hw_mode *hwmodes;
607 unsigned int curr_hwmode;
608#define HWMODE_B 0
609#define HWMODE_G 1
610#define HWMODE_A 2
611
612 /*
613 * rfkill structure for RF state switching support.
614 * This will only be compiled in when required.
615 */
616#ifdef CONFIG_RT2X00_LIB_RFKILL
617 struct rfkill *rfkill;
618 struct input_polled_dev *poll_dev;
619#endif /* CONFIG_RT2X00_LIB_RFKILL */
620
621 /*
622 * If enabled, the debugfs interface structures
623 * required for deregistration of debugfs.
624 */
625#ifdef CONFIG_RT2X00_LIB_DEBUGFS
626 const struct rt2x00debug_intf *debugfs_intf;
627#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
628
629 /*
630 * Device flags.
631 * In these flags the current status and some
632 * of the device capabilities are stored.
633 */
634 unsigned long flags;
95ea3627
ID		 635
636 /*
637 * Chipset identification.
638 */
639 struct rt2x00_chip chip;
640
641 /*
642 * hw capability specifications.
643 */
644 struct hw_mode_spec spec;
645
addc81bd
ID		 646 /*
647 * This is the default TX/RX antenna setup as indicated
648 * by the device's EEPROM. When mac80211 sets its
649 * antenna value to 0 we should be using these values.
650 */
651 struct antenna_setup default_ant;
652
95ea3627
ID		 653 /*
654 * Register pointers
655 * csr_addr: Base register address. (PCI)
656 * csr_cache: CSR cache for usb_control_msg. (USB)
657 */
658 void __iomem *csr_addr;
659 void *csr_cache;
660
661 /*
662 * Interface configuration.
663 */
664 struct interface interface;
665
666 /*
667 * Link quality
668 */
669 struct link link;
670
671 /*
672 * EEPROM data.
673 */
674 __le16 *eeprom;
675
676 /*
677 * Active RF register values.
678 * These are stored here so we don't need
679 * to read the rf registers and can directly
680 * use this value instead.
681 * This field should be accessed by using
682 * rt2x00_rf_read() and rt2x00_rf_write().
683 */
684 u32 *rf;
685
b242e891
ID		 686 /*
687 * USB Max frame size (for rt2500usb & rt73usb).
688 */
689 u16 usb_maxpacket;
690
95ea3627
ID		 691 /*
692 * Current TX power value.
693 */
694 u16 tx_power;
695
696 /*
697 * LED register (for rt61pci & rt73usb).
698 */
699 u16 led_reg;
700
701 /*
702 * Led mode (LED_MODE_*)
703 */
704 u8 led_mode;
705
706 /*
707 * Rssi <-> Dbm offset
708 */
709 u8 rssi_offset;
710
711 /*
712 * Frequency offset (for rt61pci & rt73usb).
713 */
714 u8 freq_offset;
715
716 /*
717 * Low level statistics which will have
718 * to be kept up to date while device is running.
719 */
720 struct ieee80211_low_level_stats low_level_stats;
721
722 /*
723 * RX configuration information.
724 */
725 struct ieee80211_rx_status rx_status;
726
727 /*
4150c572 728 * Scheduled work.
95ea3627
ID		 729 */
730 struct work_struct beacon_work;
4150c572 731 struct work_struct filter_work;
5c58ee51 732 struct work_struct config_work;
95ea3627
ID		 733
734 /*
735 * Data ring arrays for RX, TX and Beacon.
736 * The Beacon array also contains the Atim ring
737 * if that is supported by the device.
738 */
739 int data_rings;
740 struct data_ring *rx;
741 struct data_ring *tx;
742 struct data_ring *bcn;
743
744 /*
745 * Firmware image.
746 */
747 const struct firmware *fw;
748};
749
750/*
751 * For-each loop for the ring array.
752 * All rings have been allocated as a single array,
753 * this means we can create a very simply loop macro
754 * that is capable of looping through all rings.
755 * ring_end(), txring_end() and ring_loop() are helper macro's which
756 * should not be used directly. Instead the following should be used:
757 * ring_for_each() - Loops through all rings (RX, TX, Beacon & Atim)
758 * txring_for_each() - Loops through TX data rings (TX only)
759 * txringall_for_each() - Loops through all TX rings (TX, Beacon & Atim)
760 */
761#define ring_end(__dev) \
762 &(__dev)->rx[(__dev)->data_rings]
763
764#define txring_end(__dev) \
765 &(__dev)->tx[(__dev)->hw->queues]
766
767#define ring_loop(__entry, __start, __end) \
768 for ((__entry) = (__start); \
769 prefetch(&(__entry)[1]), (__entry) != (__end); \
770 (__entry) = &(__entry)[1])
771
772#define ring_for_each(__dev, __entry) \
773 ring_loop(__entry, (__dev)->rx, ring_end(__dev))
774
775#define txring_for_each(__dev, __entry) \
776 ring_loop(__entry, (__dev)->tx, txring_end(__dev))
777
778#define txringall_for_each(__dev, __entry) \
779 ring_loop(__entry, (__dev)->tx, ring_end(__dev))
780
781/*
782 * Generic RF access.
783 * The RF is being accessed by word index.
784 */
785static inline void rt2x00_rf_read(const struct rt2x00_dev *rt2x00dev,
786 const unsigned int word, u32 *data)
787{
788 *data = rt2x00dev->rf[word];
789}
790
791static inline void rt2x00_rf_write(const struct rt2x00_dev *rt2x00dev,
792 const unsigned int word, u32 data)
793{
794 rt2x00dev->rf[word] = data;
795}
796
797/*
798 * Generic EEPROM access.
799 * The EEPROM is being accessed by word index.
800 */
801static inline void *rt2x00_eeprom_addr(const struct rt2x00_dev *rt2x00dev,
802 const unsigned int word)
803{
804 return (void *)&rt2x00dev->eeprom[word];
805}
806
807static inline void rt2x00_eeprom_read(const struct rt2x00_dev *rt2x00dev,
808 const unsigned int word, u16 *data)
809{
810 *data = le16_to_cpu(rt2x00dev->eeprom[word]);
811}
812
813static inline void rt2x00_eeprom_write(const struct rt2x00_dev *rt2x00dev,
814 const unsigned int word, u16 data)
815{
816 rt2x00dev->eeprom[word] = cpu_to_le16(data);
817}
818
819/*
820 * Chipset handlers
821 */
822static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
823 const u16 rt, const u16 rf, const u32 rev)
824{
825 INFO(rt2x00dev,
826 "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n",
827 rt, rf, rev);
828
829 rt2x00dev->chip.rt = rt;
830 rt2x00dev->chip.rf = rf;
831 rt2x00dev->chip.rev = rev;
832}
833
834static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip)
835{
836 return (chipset->rt == chip);
837}
838
839static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip)
840{
841 return (chipset->rf == chip);
842}
843
755a957d 844static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset)
95ea3627
ID		 845{
846 return chipset->rev;
847}
848
755a957d
ID		 849static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset,
850 const u32 rev)
95ea3627 851{
755a957d
ID		 852 return (((chipset->rev & 0xffff0) == rev) &&
853 !!(chipset->rev & 0x0000f));
95ea3627
ID		 854}
855
856/*
857 * Duration calculations
858 * The rate variable passed is: 100kbs.
859 * To convert from bytes to bits we multiply size with 8,
860 * then the size is multiplied with 10 to make the
861 * real rate -> rate argument correction.
862 */
863static inline u16 get_duration(const unsigned int size, const u8 rate)
864{
865 return ((size * 8 * 10) / rate);
866}
867
868static inline u16 get_duration_res(const unsigned int size, const u8 rate)
869{
870 return ((size * 8 * 10) % rate);
871}
872
873/*
874 * Library functions.
875 */
876struct data_ring *rt2x00lib_get_ring(struct rt2x00_dev *rt2x00dev,
877 const unsigned int queue);
878
879/*
880 * Interrupt context handlers.
881 */
882void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
883void rt2x00lib_txdone(struct data_entry *entry,
884 const int status, const int retry);
885void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
4150c572 886 struct rxdata_entry_desc *desc);
95ea3627
ID		 887
888/*
889 * TX descriptor initializer
890 */
891void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
892 struct data_desc *txd,
893 struct ieee80211_hdr *ieee80211hdr,
894 unsigned int length,
895 struct ieee80211_tx_control *control);
896
897/*
898 * mac80211 handlers.
899 */
900int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
901 struct ieee80211_tx_control *control);
902int rt2x00mac_start(struct ieee80211_hw *hw);
903void rt2x00mac_stop(struct ieee80211_hw *hw);
904int rt2x00mac_add_interface(struct ieee80211_hw *hw,
905 struct ieee80211_if_init_conf *conf);
906void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
907 struct ieee80211_if_init_conf *conf);
908int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
909int rt2x00mac_config_interface(struct ieee80211_hw *hw, int if_id,
910 struct ieee80211_if_conf *conf);
95ea3627
ID		 911int rt2x00mac_get_stats(struct ieee80211_hw *hw,
912 struct ieee80211_low_level_stats *stats);
913int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw,
914 struct ieee80211_tx_queue_stats *stats);
5c58ee51
ID		 915void rt2x00mac_erp_ie_changed(struct ieee80211_hw *hw, u8 changes,
916 int cts_protection, int preamble);
95ea3627
ID		 917int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue,
918 const struct ieee80211_tx_queue_params *params);
919
920/*
921 * Driver allocation handlers.
922 */
923int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
924void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
925#ifdef CONFIG_PM
926int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
927int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
928#endif /* CONFIG_PM */
929
930#endif /* RT2X00_H */
Linux kernel - Deliverables
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