1 /*
2  * Copyright (c) 2004-2007 Reyk Floeter <reyk@openbsd.org>
3  * Copyright (c) 2006-2007 Nick Kossifidis <mickflemm@gmail.com>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #ifndef _ATH5K_H
19 #define _ATH5K_H
20 
21 /* TODO: Clean up channel debugging (doesn't work anyway) and start
22  * working on reg. control code using all available eeprom information
23  * (rev. engineering needed) */
24 #define CHAN_DEBUG	0
25 
26 #include <linux/io.h>
27 #include <linux/interrupt.h>
28 #include <linux/types.h>
29 #include <linux/average.h>
30 #include <linux/leds.h>
31 #include <net/mac80211.h>
32 #include <net/cfg80211.h>
33 
34 /* RX/TX descriptor hw structs
35  * TODO: Driver part should only see sw structs */
36 #include "desc.h"
37 
38 /* EEPROM structs/offsets
39  * TODO: Make a more generic struct (eg. add more stuff to ath5k_capabilities)
40  * and clean up common bits, then introduce set/get functions in eeprom.c */
41 #include "eeprom.h"
42 #include "debug.h"
43 #include "../ath.h"
44 #include "ani.h"
45 
46 /* PCI IDs */
47 #define PCI_DEVICE_ID_ATHEROS_AR5210		0x0007 /* AR5210 */
48 #define PCI_DEVICE_ID_ATHEROS_AR5311		0x0011 /* AR5311 */
49 #define PCI_DEVICE_ID_ATHEROS_AR5211		0x0012 /* AR5211 */
50 #define PCI_DEVICE_ID_ATHEROS_AR5212		0x0013 /* AR5212 */
51 #define PCI_DEVICE_ID_3COM_3CRDAG675		0x0013 /* 3CRDAG675 (Atheros AR5212) */
52 #define PCI_DEVICE_ID_3COM_2_3CRPAG175		0x0013 /* 3CRPAG175 (Atheros AR5212) */
53 #define PCI_DEVICE_ID_ATHEROS_AR5210_AP		0x0207 /* AR5210 (Early) */
54 #define PCI_DEVICE_ID_ATHEROS_AR5212_IBM	0x1014 /* AR5212 (IBM MiniPCI) */
55 #define PCI_DEVICE_ID_ATHEROS_AR5210_DEFAULT	0x1107 /* AR5210 (no eeprom) */
56 #define PCI_DEVICE_ID_ATHEROS_AR5212_DEFAULT	0x1113 /* AR5212 (no eeprom) */
57 #define PCI_DEVICE_ID_ATHEROS_AR5211_DEFAULT	0x1112 /* AR5211 (no eeprom) */
58 #define PCI_DEVICE_ID_ATHEROS_AR5212_FPGA	0xf013 /* AR5212 (emulation board) */
59 #define PCI_DEVICE_ID_ATHEROS_AR5211_LEGACY	0xff12 /* AR5211 (emulation board) */
60 #define PCI_DEVICE_ID_ATHEROS_AR5211_FPGA11B	0xf11b /* AR5211 (emulation board) */
61 #define PCI_DEVICE_ID_ATHEROS_AR5312_REV2	0x0052 /* AR5312 WMAC (AP31) */
62 #define PCI_DEVICE_ID_ATHEROS_AR5312_REV7	0x0057 /* AR5312 WMAC (AP30-040) */
63 #define PCI_DEVICE_ID_ATHEROS_AR5312_REV8	0x0058 /* AR5312 WMAC (AP43-030) */
64 #define PCI_DEVICE_ID_ATHEROS_AR5212_0014	0x0014 /* AR5212 compatible */
65 #define PCI_DEVICE_ID_ATHEROS_AR5212_0015	0x0015 /* AR5212 compatible */
66 #define PCI_DEVICE_ID_ATHEROS_AR5212_0016	0x0016 /* AR5212 compatible */
67 #define PCI_DEVICE_ID_ATHEROS_AR5212_0017	0x0017 /* AR5212 compatible */
68 #define PCI_DEVICE_ID_ATHEROS_AR5212_0018	0x0018 /* AR5212 compatible */
69 #define PCI_DEVICE_ID_ATHEROS_AR5212_0019	0x0019 /* AR5212 compatible */
70 #define PCI_DEVICE_ID_ATHEROS_AR2413		0x001a /* AR2413 (Griffin-lite) */
71 #define PCI_DEVICE_ID_ATHEROS_AR5413		0x001b /* AR5413 (Eagle) */
72 #define PCI_DEVICE_ID_ATHEROS_AR5424		0x001c /* AR5424 (Condor PCI-E) */
73 #define PCI_DEVICE_ID_ATHEROS_AR5416		0x0023 /* AR5416 */
74 #define PCI_DEVICE_ID_ATHEROS_AR5418		0x0024 /* AR5418 */
75 
76 /****************************\
77   GENERIC DRIVER DEFINITIONS
78 \****************************/
79 
80 #define ATH5K_PRINTF(fmt, ...)						\
81 	pr_warn("%s: " fmt, __func__, ##__VA_ARGS__)
82 
83 void __printf(3, 4)
84 _ath5k_printk(const struct ath5k_hw *ah, const char *level,
85 	      const char *fmt, ...);
86 
87 #define ATH5K_PRINTK(_sc, _level, _fmt, ...)				\
88 	_ath5k_printk(_sc, _level, _fmt, ##__VA_ARGS__)
89 
90 #define ATH5K_PRINTK_LIMIT(_sc, _level, _fmt, ...)			\
91 do {									\
92 	if (net_ratelimit())						\
93 		ATH5K_PRINTK(_sc, _level, _fmt, ##__VA_ARGS__); 	\
94 } while (0)
95 
96 #define ATH5K_INFO(_sc, _fmt, ...)					\
97 	ATH5K_PRINTK(_sc, KERN_INFO, _fmt, ##__VA_ARGS__)
98 
99 #define ATH5K_WARN(_sc, _fmt, ...)					\
100 	ATH5K_PRINTK_LIMIT(_sc, KERN_WARNING, _fmt, ##__VA_ARGS__)
101 
102 #define ATH5K_ERR(_sc, _fmt, ...)					\
103 	ATH5K_PRINTK_LIMIT(_sc, KERN_ERR, _fmt, ##__VA_ARGS__)
104 
105 /*
106  * AR5K REGISTER ACCESS
107  */
108 
109 /* Some macros to read/write fields */
110 
111 /* First shift, then mask */
112 #define AR5K_REG_SM(_val, _flags)					\
113 	(((_val) << _flags##_S) & (_flags))
114 
115 /* First mask, then shift */
116 #define AR5K_REG_MS(_val, _flags)					\
117 	(((_val) & (_flags)) >> _flags##_S)
118 
119 /* Some registers can hold multiple values of interest. For this
120  * reason when we want to write to these registers we must first
121  * retrieve the values which we do not want to clear (lets call this
122  * old_data) and then set the register with this and our new_value:
123  * ( old_data | new_value) */
124 #define AR5K_REG_WRITE_BITS(ah, _reg, _flags, _val)			\
125 	ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) & ~(_flags)) | \
126 	    (((_val) << _flags##_S) & (_flags)), _reg)
127 
128 #define AR5K_REG_MASKED_BITS(ah, _reg, _flags, _mask)			\
129 	ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) &		\
130 			(_mask)) | (_flags), _reg)
131 
132 #define AR5K_REG_ENABLE_BITS(ah, _reg, _flags)				\
133 	ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) | (_flags), _reg)
134 
135 #define AR5K_REG_DISABLE_BITS(ah, _reg, _flags)			\
136 	ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) & ~(_flags), _reg)
137 
138 /* Access QCU registers per queue */
139 #define AR5K_REG_READ_Q(ah, _reg, _queue)				\
140 	(ath5k_hw_reg_read(ah, _reg) & (1 << _queue))			\
141 
142 #define AR5K_REG_WRITE_Q(ah, _reg, _queue)				\
143 	ath5k_hw_reg_write(ah, (1 << _queue), _reg)
144 
145 #define AR5K_Q_ENABLE_BITS(_reg, _queue) do {				\
146 	_reg |= 1 << _queue;						\
147 } while (0)
148 
149 #define AR5K_Q_DISABLE_BITS(_reg, _queue) do {				\
150 	_reg &= ~(1 << _queue);						\
151 } while (0)
152 
153 /* Used while writing initvals */
154 #define AR5K_REG_WAIT(_i) do {						\
155 	if (_i % 64)							\
156 		udelay(1);						\
157 } while (0)
158 
159 /*
160  * Some tunable values (these should be changeable by the user)
161  * TODO: Make use of them and add more options OR use debug/configfs
162  */
163 #define AR5K_TUNE_DMA_BEACON_RESP		2
164 #define AR5K_TUNE_SW_BEACON_RESP		10
165 #define AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF	0
166 #define AR5K_TUNE_MIN_TX_FIFO_THRES		1
167 #define AR5K_TUNE_MAX_TX_FIFO_THRES	((IEEE80211_MAX_FRAME_LEN / 64) + 1)
168 #define AR5K_TUNE_REGISTER_TIMEOUT		20000
169 /* Register for RSSI threshold has a mask of 0xff, so 255 seems to
170  * be the max value. */
171 #define AR5K_TUNE_RSSI_THRES			129
172 /* This must be set when setting the RSSI threshold otherwise it can
173  * prevent a reset. If AR5K_RSSI_THR is read after writing to it
174  * the BMISS_THRES will be seen as 0, seems hardware doesn't keep
175  * track of it. Max value depends on hardware. For AR5210 this is just 7.
176  * For AR5211+ this seems to be up to 255. */
177 #define AR5K_TUNE_BMISS_THRES			7
178 #define AR5K_TUNE_REGISTER_DWELL_TIME		20000
179 #define AR5K_TUNE_BEACON_INTERVAL		100
180 #define AR5K_TUNE_AIFS				2
181 #define AR5K_TUNE_AIFS_11B			2
182 #define AR5K_TUNE_AIFS_XR			0
183 #define AR5K_TUNE_CWMIN				15
184 #define AR5K_TUNE_CWMIN_11B			31
185 #define AR5K_TUNE_CWMIN_XR			3
186 #define AR5K_TUNE_CWMAX				1023
187 #define AR5K_TUNE_CWMAX_11B			1023
188 #define AR5K_TUNE_CWMAX_XR			7
189 #define AR5K_TUNE_NOISE_FLOOR			-72
190 #define AR5K_TUNE_CCA_MAX_GOOD_VALUE		-95
191 #define AR5K_TUNE_MAX_TXPOWER			63
192 #define AR5K_TUNE_DEFAULT_TXPOWER		25
193 #define AR5K_TUNE_TPC_TXPOWER			false
194 #define ATH5K_TUNE_CALIBRATION_INTERVAL_FULL    60000   /* 60 sec */
195 #define	ATH5K_TUNE_CALIBRATION_INTERVAL_SHORT	10000	/* 10 sec */
196 #define ATH5K_TUNE_CALIBRATION_INTERVAL_ANI	1000	/* 1 sec */
197 #define ATH5K_TX_COMPLETE_POLL_INT		3000	/* 3 sec */
198 
199 #define AR5K_INIT_CARR_SENSE_EN			1
200 
201 /*Swap RX/TX Descriptor for big endian archs*/
202 #if defined(__BIG_ENDIAN)
203 #define AR5K_INIT_CFG	(		\
204 	AR5K_CFG_SWTD | AR5K_CFG_SWRD	\
205 )
206 #else
207 #define AR5K_INIT_CFG	0x00000000
208 #endif
209 
210 /* Initial values */
211 #define	AR5K_INIT_CYCRSSI_THR1			2
212 
213 /* Tx retry limit defaults from standard */
214 #define AR5K_INIT_RETRY_SHORT			7
215 #define AR5K_INIT_RETRY_LONG			4
216 
217 /* Slot time */
218 #define AR5K_INIT_SLOT_TIME_TURBO		6
219 #define AR5K_INIT_SLOT_TIME_DEFAULT		9
220 #define	AR5K_INIT_SLOT_TIME_HALF_RATE		13
221 #define	AR5K_INIT_SLOT_TIME_QUARTER_RATE	21
222 #define	AR5K_INIT_SLOT_TIME_B			20
223 #define AR5K_SLOT_TIME_MAX			0xffff
224 
225 /* SIFS */
226 #define	AR5K_INIT_SIFS_TURBO			6
227 #define	AR5K_INIT_SIFS_DEFAULT_BG		10
228 #define	AR5K_INIT_SIFS_DEFAULT_A		16
229 #define	AR5K_INIT_SIFS_HALF_RATE		32
230 #define AR5K_INIT_SIFS_QUARTER_RATE		64
231 
232 /* Used to calculate tx time for non 5/10/40MHz
233  * operation */
234 /* It's preamble time + signal time (16 + 4) */
235 #define	AR5K_INIT_OFDM_PREAMPLE_TIME		20
236 /* Preamble time for 40MHz (turbo) operation (min ?) */
237 #define	AR5K_INIT_OFDM_PREAMBLE_TIME_MIN	14
238 #define	AR5K_INIT_OFDM_SYMBOL_TIME		4
239 #define	AR5K_INIT_OFDM_PLCP_BITS		22
240 
241 /* Rx latency for 5 and 10MHz operation (max ?) */
242 #define AR5K_INIT_RX_LAT_MAX			63
243 /* Tx latencies from initvals (5212 only but no problem
244  * because we only tweak them on 5212) */
245 #define	AR5K_INIT_TX_LAT_A			54
246 #define	AR5K_INIT_TX_LAT_BG			384
247 /* Tx latency for 40MHz (turbo) operation (min ?) */
248 #define	AR5K_INIT_TX_LAT_MIN			32
249 /* Default Tx/Rx latencies (same for 5211)*/
250 #define AR5K_INIT_TX_LATENCY_5210		54
251 #define	AR5K_INIT_RX_LATENCY_5210		29
252 
253 /* Tx frame to Tx data start delay */
254 #define AR5K_INIT_TXF2TXD_START_DEFAULT		14
255 #define AR5K_INIT_TXF2TXD_START_DELAY_10MHZ	12
256 #define AR5K_INIT_TXF2TXD_START_DELAY_5MHZ	13
257 
258 /* We need to increase PHY switch and agc settling time
259  * on turbo mode */
260 #define	AR5K_SWITCH_SETTLING			5760
261 #define	AR5K_SWITCH_SETTLING_TURBO		7168
262 
263 #define	AR5K_AGC_SETTLING			28
264 /* 38 on 5210 but shouldn't matter */
265 #define	AR5K_AGC_SETTLING_TURBO			37
266 
267 
268 
269 /*****************************\
270 * GENERIC CHIPSET DEFINITIONS *
271 \*****************************/
272 
273 /**
274  * enum ath5k_version - MAC Chips
275  * @AR5K_AR5210: AR5210 (Crete)
276  * @AR5K_AR5211: AR5211 (Oahu/Maui)
277  * @AR5K_AR5212: AR5212 (Venice) and newer
278  */
279 enum ath5k_version {
280 	AR5K_AR5210	= 0,
281 	AR5K_AR5211	= 1,
282 	AR5K_AR5212	= 2,
283 };
284 
285 /**
286  * enum ath5k_radio - PHY Chips
287  * @AR5K_RF5110: RF5110 (Fez)
288  * @AR5K_RF5111: RF5111 (Sombrero)
289  * @AR5K_RF5112: RF2112/5112(A) (Derby/Derby2)
290  * @AR5K_RF2413: RF2413/2414 (Griffin/Griffin-Lite)
291  * @AR5K_RF5413: RF5413/5414/5424 (Eagle/Condor)
292  * @AR5K_RF2316: RF2315/2316 (Cobra SoC)
293  * @AR5K_RF2317: RF2317 (Spider SoC)
294  * @AR5K_RF2425: RF2425/2417 (Swan/Nalla)
295  */
296 enum ath5k_radio {
297 	AR5K_RF5110	= 0,
298 	AR5K_RF5111	= 1,
299 	AR5K_RF5112	= 2,
300 	AR5K_RF2413	= 3,
301 	AR5K_RF5413	= 4,
302 	AR5K_RF2316	= 5,
303 	AR5K_RF2317	= 6,
304 	AR5K_RF2425	= 7,
305 };
306 
307 /*
308  * Common silicon revision/version values
309  */
310 
311 #define AR5K_SREV_UNKNOWN	0xffff
312 
313 #define AR5K_SREV_AR5210	0x00 /* Crete */
314 #define AR5K_SREV_AR5311	0x10 /* Maui 1 */
315 #define AR5K_SREV_AR5311A	0x20 /* Maui 2 */
316 #define AR5K_SREV_AR5311B	0x30 /* Spirit */
317 #define AR5K_SREV_AR5211	0x40 /* Oahu */
318 #define AR5K_SREV_AR5212	0x50 /* Venice */
319 #define AR5K_SREV_AR5312_R2	0x52 /* AP31 */
320 #define AR5K_SREV_AR5212_V4	0x54 /* ??? */
321 #define AR5K_SREV_AR5213	0x55 /* ??? */
322 #define AR5K_SREV_AR5312_R7	0x57 /* AP30 */
323 #define AR5K_SREV_AR2313_R8	0x58 /* AP43 */
324 #define AR5K_SREV_AR5213A	0x59 /* Hainan */
325 #define AR5K_SREV_AR2413	0x78 /* Griffin lite */
326 #define AR5K_SREV_AR2414	0x70 /* Griffin */
327 #define AR5K_SREV_AR2315_R6	0x86 /* AP51-Light */
328 #define AR5K_SREV_AR2315_R7	0x87 /* AP51-Full */
329 #define AR5K_SREV_AR5424	0x90 /* Condor */
330 #define AR5K_SREV_AR2317_R1	0x90 /* AP61-Light */
331 #define AR5K_SREV_AR2317_R2	0x91 /* AP61-Full */
332 #define AR5K_SREV_AR5413	0xa4 /* Eagle lite */
333 #define AR5K_SREV_AR5414	0xa0 /* Eagle */
334 #define AR5K_SREV_AR2415	0xb0 /* Talon */
335 #define AR5K_SREV_AR5416	0xc0 /* PCI-E */
336 #define AR5K_SREV_AR5418	0xca /* PCI-E */
337 #define AR5K_SREV_AR2425	0xe0 /* Swan */
338 #define AR5K_SREV_AR2417	0xf0 /* Nala */
339 
340 #define AR5K_SREV_RAD_5110	0x00
341 #define AR5K_SREV_RAD_5111	0x10
342 #define AR5K_SREV_RAD_5111A	0x15
343 #define AR5K_SREV_RAD_2111	0x20
344 #define AR5K_SREV_RAD_5112	0x30
345 #define AR5K_SREV_RAD_5112A	0x35
346 #define	AR5K_SREV_RAD_5112B	0x36
347 #define AR5K_SREV_RAD_2112	0x40
348 #define AR5K_SREV_RAD_2112A	0x45
349 #define	AR5K_SREV_RAD_2112B	0x46
350 #define AR5K_SREV_RAD_2413	0x50
351 #define AR5K_SREV_RAD_5413	0x60
352 #define AR5K_SREV_RAD_2316	0x70 /* Cobra SoC */
353 #define AR5K_SREV_RAD_2317	0x80
354 #define AR5K_SREV_RAD_5424	0xa0 /* Mostly same as 5413 */
355 #define AR5K_SREV_RAD_2425	0xa2
356 #define AR5K_SREV_RAD_5133	0xc0
357 
358 #define AR5K_SREV_PHY_5211	0x30
359 #define AR5K_SREV_PHY_5212	0x41
360 #define	AR5K_SREV_PHY_5212A	0x42
361 #define AR5K_SREV_PHY_5212B	0x43
362 #define AR5K_SREV_PHY_2413	0x45
363 #define AR5K_SREV_PHY_5413	0x61
364 #define AR5K_SREV_PHY_2425	0x70
365 
366 /* TODO add support to mac80211 for vendor-specific rates and modes */
367 
368 /**
369  * DOC: Atheros XR
370  *
371  * Some of this information is based on Documentation from:
372  *
373  * http://madwifi-project.org/wiki/ChipsetFeatures/SuperAG
374  *
375  * Atheros' eXtended Range - range enhancing extension is a modulation scheme
376  * that is supposed to double the link distance between an Atheros XR-enabled
377  * client device with an Atheros XR-enabled access point. This is achieved
378  * by increasing the receiver sensitivity up to, -105dBm, which is about 20dB
379  * above what the 802.11 specifications demand. In addition, new (proprietary)
380  * data rates are introduced: 3, 2, 1, 0.5 and 0.25 MBit/s.
381  *
382  * Please note that can you either use XR or TURBO but you cannot use both,
383  * they are exclusive.
384  *
385  * Also note that we do not plan to support XR mode at least for now. You can
386  * get a mode similar to XR by using 5MHz bwmode.
387  */
388 
389 
390 /**
391  * DOC: Atheros SuperAG
392  *
393  * In addition to XR we have another modulation scheme called TURBO mode
394  * that is supposed to provide a throughput transmission speed up to 40Mbit/s
395  * -60Mbit/s at a 108Mbit/s signaling rate achieved through the bonding of two
396  * 54Mbit/s 802.11g channels. To use this feature both ends must support it.
397  * There is also a distinction between "static" and "dynamic" turbo modes:
398  *
399  * - Static: is the dumb version: devices set to this mode stick to it until
400  *     the mode is turned off.
401  *
402  * - Dynamic: is the intelligent version, the network decides itself if it
403  *     is ok to use turbo. As soon as traffic is detected on adjacent channels
404  *     (which would get used in turbo mode), or when a non-turbo station joins
405  *     the network, turbo mode won't be used until the situation changes again.
406  *     Dynamic mode is achieved by Atheros' Adaptive Radio (AR) feature which
407  *     monitors the used radio band in order to decide whether turbo mode may
408  *     be used or not.
409  *
410  * This article claims Super G sticks to bonding of channels 5 and 6 for
411  * USA:
412  *
413  * http://www.pcworld.com/article/id,113428-page,1/article.html
414  *
415  * The channel bonding seems to be driver specific though.
416  *
417  * In addition to TURBO modes we also have the following features for even
418  * greater speed-up:
419  *
420  * - Bursting: allows multiple frames to be sent at once, rather than pausing
421  *     after each frame. Bursting is a standards-compliant feature that can be
422  *     used with any Access Point.
423  *
424  * - Fast frames: increases the amount of information that can be sent per
425  *     frame, also resulting in a reduction of transmission overhead. It is a
426  *     proprietary feature that needs to be supported by the Access Point.
427  *
428  * - Compression: data frames are compressed in real time using a Lempel Ziv
429  *     algorithm. This is done transparently. Once this feature is enabled,
430  *     compression and decompression takes place inside the chipset, without
431  *     putting additional load on the host CPU.
432  *
433  * As with XR we also don't plan to support SuperAG features for now. You can
434  * get a mode similar to TURBO by using 40MHz bwmode.
435  */
436 
437 
438 /**
439  * enum ath5k_driver_mode - PHY operation mode
440  * @AR5K_MODE_11A: 802.11a
441  * @AR5K_MODE_11B: 802.11b
442  * @AR5K_MODE_11G: 801.11g
443  * @AR5K_MODE_MAX: Used for boundary checks
444  *
445  * Do not change the order here, we use these as
446  * array indices and it also maps EEPROM structures.
447  */
448 enum ath5k_driver_mode {
449 	AR5K_MODE_11A		=	0,
450 	AR5K_MODE_11B		=	1,
451 	AR5K_MODE_11G		=	2,
452 	AR5K_MODE_MAX		=	3
453 };
454 
455 /**
456  * enum ath5k_ant_mode - Antenna operation mode
457  * @AR5K_ANTMODE_DEFAULT: Default antenna setup
458  * @AR5K_ANTMODE_FIXED_A: Only antenna A is present
459  * @AR5K_ANTMODE_FIXED_B: Only antenna B is present
460  * @AR5K_ANTMODE_SINGLE_AP: STA locked on a single ap
461  * @AR5K_ANTMODE_SECTOR_AP: AP with tx antenna set on tx desc
462  * @AR5K_ANTMODE_SECTOR_STA: STA with tx antenna set on tx desc
463  * @AR5K_ANTMODE_DEBUG: Debug mode -A -> Rx, B-> Tx-
464  * @AR5K_ANTMODE_MAX: Used for boundary checks
465  *
466  * For more infos on antenna control check out phy.c
467  */
468 enum ath5k_ant_mode {
469 	AR5K_ANTMODE_DEFAULT	= 0,
470 	AR5K_ANTMODE_FIXED_A	= 1,
471 	AR5K_ANTMODE_FIXED_B	= 2,
472 	AR5K_ANTMODE_SINGLE_AP	= 3,
473 	AR5K_ANTMODE_SECTOR_AP	= 4,
474 	AR5K_ANTMODE_SECTOR_STA	= 5,
475 	AR5K_ANTMODE_DEBUG	= 6,
476 	AR5K_ANTMODE_MAX,
477 };
478 
479 /**
480  * enum ath5k_bw_mode - Bandwidth operation mode
481  * @AR5K_BWMODE_DEFAULT: 20MHz, default operation
482  * @AR5K_BWMODE_5MHZ: Quarter rate
483  * @AR5K_BWMODE_10MHZ: Half rate
484  * @AR5K_BWMODE_40MHZ: Turbo
485  */
486 enum ath5k_bw_mode {
487 	AR5K_BWMODE_DEFAULT	= 0,
488 	AR5K_BWMODE_5MHZ	= 1,
489 	AR5K_BWMODE_10MHZ	= 2,
490 	AR5K_BWMODE_40MHZ	= 3
491 };
492 
493 
494 
495 /****************\
496   TX DEFINITIONS
497 \****************/
498 
499 /**
500  * struct ath5k_tx_status - TX Status descriptor
501  * @ts_seqnum: Sequence number
502  * @ts_tstamp: Timestamp
503  * @ts_status: Status code
504  * @ts_final_idx: Final transmission series index
505  * @ts_final_retry: Final retry count
506  * @ts_rssi: RSSI for received ACK
507  * @ts_shortretry: Short retry count
508  * @ts_virtcol: Virtual collision count
509  * @ts_antenna: Antenna used
510  *
511  * TX status descriptor gets filled by the hw
512  * on each transmission attempt.
513  */
514 struct ath5k_tx_status {
515 	u16	ts_seqnum;
516 	u16	ts_tstamp;
517 	u8	ts_status;
518 	u8	ts_final_idx;
519 	u8	ts_final_retry;
520 	s8	ts_rssi;
521 	u8	ts_shortretry;
522 	u8	ts_virtcol;
523 	u8	ts_antenna;
524 };
525 
526 #define AR5K_TXSTAT_ALTRATE	0x80
527 #define AR5K_TXERR_XRETRY	0x01
528 #define AR5K_TXERR_FILT		0x02
529 #define AR5K_TXERR_FIFO		0x04
530 
531 /**
532  * enum ath5k_tx_queue - Queue types used to classify tx queues.
533  * @AR5K_TX_QUEUE_INACTIVE: q is unused -- see ath5k_hw_release_tx_queue
534  * @AR5K_TX_QUEUE_DATA: A normal data queue
535  * @AR5K_TX_QUEUE_BEACON: The beacon queue
536  * @AR5K_TX_QUEUE_CAB: The after-beacon queue
537  * @AR5K_TX_QUEUE_UAPSD: Unscheduled Automatic Power Save Delivery queue
538  */
539 enum ath5k_tx_queue {
540 	AR5K_TX_QUEUE_INACTIVE = 0,
541 	AR5K_TX_QUEUE_DATA,
542 	AR5K_TX_QUEUE_BEACON,
543 	AR5K_TX_QUEUE_CAB,
544 	AR5K_TX_QUEUE_UAPSD,
545 };
546 
547 #define	AR5K_NUM_TX_QUEUES		10
548 #define	AR5K_NUM_TX_QUEUES_NOQCU	2
549 
550 /**
551  * enum ath5k_tx_queue_subtype - Queue sub-types to classify normal data queues
552  * @AR5K_WME_AC_BK: Background traffic
553  * @AR5K_WME_AC_BE: Best-effort (normal) traffic
554  * @AR5K_WME_AC_VI: Video traffic
555  * @AR5K_WME_AC_VO: Voice traffic
556  *
557  * These are the 4 Access Categories as defined in
558  * WME spec. 0 is the lowest priority and 4 is the
559  * highest. Normal data that hasn't been classified
560  * goes to the Best Effort AC.
561  */
562 enum ath5k_tx_queue_subtype {
563 	AR5K_WME_AC_BK = 0,
564 	AR5K_WME_AC_BE,
565 	AR5K_WME_AC_VI,
566 	AR5K_WME_AC_VO,
567 };
568 
569 /**
570  * enum ath5k_tx_queue_id - Queue ID numbers as returned by the hw functions
571  * @AR5K_TX_QUEUE_ID_NOQCU_DATA: Data queue on AR5210 (no QCU available)
572  * @AR5K_TX_QUEUE_ID_NOQCU_BEACON: Beacon queue on AR5210 (no QCU available)
573  * @AR5K_TX_QUEUE_ID_DATA_MIN: Data queue min index
574  * @AR5K_TX_QUEUE_ID_DATA_MAX: Data queue max index
575  * @AR5K_TX_QUEUE_ID_CAB: Content after beacon queue
576  * @AR5K_TX_QUEUE_ID_BEACON: Beacon queue
577  * @AR5K_TX_QUEUE_ID_UAPSD: Urgent Automatic Power Save Delivery,
578  *
579  * Each number represents a hw queue. If hw does not support hw queues
580  * (eg 5210) all data goes in one queue.
581  */
582 enum ath5k_tx_queue_id {
583 	AR5K_TX_QUEUE_ID_NOQCU_DATA	= 0,
584 	AR5K_TX_QUEUE_ID_NOQCU_BEACON	= 1,
585 	AR5K_TX_QUEUE_ID_DATA_MIN	= 0,
586 	AR5K_TX_QUEUE_ID_DATA_MAX	= 3,
587 	AR5K_TX_QUEUE_ID_UAPSD		= 7,
588 	AR5K_TX_QUEUE_ID_CAB		= 8,
589 	AR5K_TX_QUEUE_ID_BEACON		= 9,
590 };
591 
592 /*
593  * Flags to set hw queue's parameters...
594  */
595 #define AR5K_TXQ_FLAG_TXOKINT_ENABLE		0x0001	/* Enable TXOK interrupt */
596 #define AR5K_TXQ_FLAG_TXERRINT_ENABLE		0x0002	/* Enable TXERR interrupt */
597 #define AR5K_TXQ_FLAG_TXEOLINT_ENABLE		0x0004	/* Enable TXEOL interrupt -not used- */
598 #define AR5K_TXQ_FLAG_TXDESCINT_ENABLE		0x0008	/* Enable TXDESC interrupt -not used- */
599 #define AR5K_TXQ_FLAG_TXURNINT_ENABLE		0x0010	/* Enable TXURN interrupt */
600 #define AR5K_TXQ_FLAG_CBRORNINT_ENABLE		0x0020	/* Enable CBRORN interrupt */
601 #define AR5K_TXQ_FLAG_CBRURNINT_ENABLE		0x0040	/* Enable CBRURN interrupt */
602 #define AR5K_TXQ_FLAG_QTRIGINT_ENABLE		0x0080	/* Enable QTRIG interrupt */
603 #define AR5K_TXQ_FLAG_TXNOFRMINT_ENABLE		0x0100	/* Enable TXNOFRM interrupt */
604 #define AR5K_TXQ_FLAG_BACKOFF_DISABLE		0x0200	/* Disable random post-backoff */
605 #define AR5K_TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE	0x0300	/* Enable ready time expiry policy (?)*/
606 #define AR5K_TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE	0x0800	/* Enable backoff while bursting */
607 #define AR5K_TXQ_FLAG_POST_FR_BKOFF_DIS		0x1000	/* Disable backoff while bursting */
608 #define AR5K_TXQ_FLAG_COMPRESSION_ENABLE	0x2000	/* Enable hw compression -not implemented-*/
609 
610 /**
611  * struct ath5k_txq - Transmit queue state
612  * @qnum: Hardware q number
613  * @link: Link ptr in last TX desc
614  * @q: Transmit queue (&struct list_head)
615  * @lock: Lock on q and link
616  * @setup: Is the queue configured
617  * @txq_len:Number of queued buffers
618  * @txq_max: Max allowed num of queued buffers
619  * @txq_poll_mark: Used to check if queue got stuck
620  * @txq_stuck: Queue stuck counter
621  *
622  * One of these exists for each hardware transmit queue.
623  * Packets sent to us from above are assigned to queues based
624  * on their priority.  Not all devices support a complete set
625  * of hardware transmit queues. For those devices the array
626  * sc_ac2q will map multiple priorities to fewer hardware queues
627  * (typically all to one hardware queue).
628  */
629 struct ath5k_txq {
630 	unsigned int		qnum;
631 	u32			*link;
632 	struct list_head	q;
633 	spinlock_t		lock;
634 	bool			setup;
635 	int			txq_len;
636 	int			txq_max;
637 	bool			txq_poll_mark;
638 	unsigned int		txq_stuck;
639 };
640 
641 /**
642  * struct ath5k_txq_info - A struct to hold TX queue's parameters
643  * @tqi_type: One of enum ath5k_tx_queue
644  * @tqi_subtype: One of enum ath5k_tx_queue_subtype
645  * @tqi_flags: TX queue flags (see above)
646  * @tqi_aifs: Arbitrated Inter-frame Space
647  * @tqi_cw_min: Minimum Contention Window
648  * @tqi_cw_max: Maximum Contention Window
649  * @tqi_cbr_period: Constant bit rate period
650  * @tqi_ready_time: Time queue waits after an event when RDYTIME is enabled
651  */
652 struct ath5k_txq_info {
653 	enum ath5k_tx_queue tqi_type;
654 	enum ath5k_tx_queue_subtype tqi_subtype;
655 	u16	tqi_flags;
656 	u8	tqi_aifs;
657 	u16	tqi_cw_min;
658 	u16	tqi_cw_max;
659 	u32	tqi_cbr_period;
660 	u32	tqi_cbr_overflow_limit;
661 	u32	tqi_burst_time;
662 	u32	tqi_ready_time;
663 };
664 
665 /**
666  * enum ath5k_pkt_type - Transmit packet types
667  * @AR5K_PKT_TYPE_NORMAL: Normal data
668  * @AR5K_PKT_TYPE_ATIM: ATIM
669  * @AR5K_PKT_TYPE_PSPOLL: PS-Poll
670  * @AR5K_PKT_TYPE_BEACON: Beacon
671  * @AR5K_PKT_TYPE_PROBE_RESP: Probe response
672  * @AR5K_PKT_TYPE_PIFS: PIFS
673  * Used on tx control descriptor
674  */
675 enum ath5k_pkt_type {
676 	AR5K_PKT_TYPE_NORMAL		= 0,
677 	AR5K_PKT_TYPE_ATIM		= 1,
678 	AR5K_PKT_TYPE_PSPOLL		= 2,
679 	AR5K_PKT_TYPE_BEACON		= 3,
680 	AR5K_PKT_TYPE_PROBE_RESP	= 4,
681 	AR5K_PKT_TYPE_PIFS		= 5,
682 };
683 
684 /*
685  * TX power and TPC settings
686  */
687 #define AR5K_TXPOWER_OFDM(_r, _v)	(			\
688 	((0 & 1) << ((_v) + 6)) |				\
689 	(((ah->ah_txpower.txp_rates_power_table[(_r)]) & 0x3f) << (_v))	\
690 )
691 
692 #define AR5K_TXPOWER_CCK(_r, _v)	(			\
693 	(ah->ah_txpower.txp_rates_power_table[(_r)] & 0x3f) << (_v)	\
694 )
695 
696 
697 
698 /****************\
699   RX DEFINITIONS
700 \****************/
701 
702 /**
703  * struct ath5k_rx_status - RX Status descriptor
704  * @rs_datalen: Data length
705  * @rs_tstamp: Timestamp
706  * @rs_status: Status code
707  * @rs_phyerr: PHY error mask
708  * @rs_rssi: RSSI in 0.5dbm units
709  * @rs_keyix: Index to the key used for decrypting
710  * @rs_rate: Rate used to decode the frame
711  * @rs_antenna: Antenna used to receive the frame
712  * @rs_more: Indicates this is a frame fragment (Fast frames)
713  */
714 struct ath5k_rx_status {
715 	u16	rs_datalen;
716 	u16	rs_tstamp;
717 	u8	rs_status;
718 	u8	rs_phyerr;
719 	s8	rs_rssi;
720 	u8	rs_keyix;
721 	u8	rs_rate;
722 	u8	rs_antenna;
723 	u8	rs_more;
724 };
725 
726 #define AR5K_RXERR_CRC		0x01
727 #define AR5K_RXERR_PHY		0x02
728 #define AR5K_RXERR_FIFO		0x04
729 #define AR5K_RXERR_DECRYPT	0x08
730 #define AR5K_RXERR_MIC		0x10
731 #define AR5K_RXKEYIX_INVALID	((u8) -1)
732 #define AR5K_TXKEYIX_INVALID	((u32) -1)
733 
734 
735 /**************************\
736  BEACON TIMERS DEFINITIONS
737 \**************************/
738 
739 #define AR5K_BEACON_PERIOD	0x0000ffff
740 #define AR5K_BEACON_ENA		0x00800000 /*enable beacon xmit*/
741 #define AR5K_BEACON_RESET_TSF	0x01000000 /*force a TSF reset*/
742 
743 
744 /*
745  * TSF to TU conversion:
746  *
747  * TSF is a 64bit value in usec (microseconds).
748  * TU is a 32bit value and defined by IEEE802.11 (page 6) as "A measurement of
749  * time equal to 1024 usec", so it's roughly milliseconds (usec / 1024).
750  */
751 #define TSF_TO_TU(_tsf) (u32)((_tsf) >> 10)
752 
753 
754 
755 /*******************************\
756   GAIN OPTIMIZATION DEFINITIONS
757 \*******************************/
758 
759 /**
760  * enum ath5k_rfgain - RF Gain optimization engine state
761  * @AR5K_RFGAIN_INACTIVE: Engine disabled
762  * @AR5K_RFGAIN_ACTIVE: Probe active
763  * @AR5K_RFGAIN_READ_REQUESTED: Probe requested
764  * @AR5K_RFGAIN_NEED_CHANGE: Gain_F needs change
765  */
766 enum ath5k_rfgain {
767 	AR5K_RFGAIN_INACTIVE = 0,
768 	AR5K_RFGAIN_ACTIVE,
769 	AR5K_RFGAIN_READ_REQUESTED,
770 	AR5K_RFGAIN_NEED_CHANGE,
771 };
772 
773 /**
774  * struct ath5k_gain - RF Gain optimization engine state data
775  * @g_step_idx: Current step index
776  * @g_current: Current gain
777  * @g_target: Target gain
778  * @g_low: Low gain boundary
779  * @g_high: High gain boundary
780  * @g_f_corr: Gain_F correction
781  * @g_state: One of enum ath5k_rfgain
782  */
783 struct ath5k_gain {
784 	u8			g_step_idx;
785 	u8			g_current;
786 	u8			g_target;
787 	u8			g_low;
788 	u8			g_high;
789 	u8			g_f_corr;
790 	u8			g_state;
791 };
792 
793 
794 
795 /********************\
796   COMMON DEFINITIONS
797 \********************/
798 
799 #define AR5K_SLOT_TIME_9	396
800 #define AR5K_SLOT_TIME_20	880
801 #define AR5K_SLOT_TIME_MAX	0xffff
802 
803 /**
804  * struct ath5k_athchan_2ghz - 2GHz to 5GHZ map for RF5111
805  * @a2_flags: Channel flags (internal)
806  * @a2_athchan: HW channel number (internal)
807  *
808  * This structure is used to map 2GHz channels to
809  * 5GHz Atheros channels on 2111 frequency converter
810  * that comes together with RF5111
811  * TODO: Clean up
812  */
813 struct ath5k_athchan_2ghz {
814 	u32	a2_flags;
815 	u16	a2_athchan;
816 };
817 
818 /**
819  * enum ath5k_dmasize -  DMA size definitions (2^(n+2))
820  * @AR5K_DMASIZE_4B: 4Bytes
821  * @AR5K_DMASIZE_8B: 8Bytes
822  * @AR5K_DMASIZE_16B: 16Bytes
823  * @AR5K_DMASIZE_32B: 32Bytes
824  * @AR5K_DMASIZE_64B: 64Bytes (Default)
825  * @AR5K_DMASIZE_128B: 128Bytes
826  * @AR5K_DMASIZE_256B: 256Bytes
827  * @AR5K_DMASIZE_512B: 512Bytes
828  *
829  * These are used to set DMA burst size on hw
830  *
831  * Note: Some platforms can't handle more than 4Bytes
832  * be careful on embedded boards.
833  */
834 enum ath5k_dmasize {
835 	AR5K_DMASIZE_4B	= 0,
836 	AR5K_DMASIZE_8B,
837 	AR5K_DMASIZE_16B,
838 	AR5K_DMASIZE_32B,
839 	AR5K_DMASIZE_64B,
840 	AR5K_DMASIZE_128B,
841 	AR5K_DMASIZE_256B,
842 	AR5K_DMASIZE_512B
843 };
844 
845 
846 
847 /******************\
848   RATE DEFINITIONS
849 \******************/
850 
851 /**
852  * DOC: Rate codes
853  *
854  * Seems the ar5xxx hardware supports up to 32 rates, indexed by 1-32.
855  *
856  * The rate code is used to get the RX rate or set the TX rate on the
857  * hardware descriptors. It is also used for internal modulation control
858  * and settings.
859  *
860  * This is the hardware rate map we are aware of (html unfriendly):
861  *
862  * Rate code	Rate (Kbps)
863  * ---------	-----------
864  * 0x01		 3000 (XR)
865  * 0x02		 1000 (XR)
866  * 0x03		  250 (XR)
867  * 0x04 - 05	-Reserved-
868  * 0x06		 2000 (XR)
869  * 0x07		  500 (XR)
870  * 0x08		48000 (OFDM)
871  * 0x09		24000 (OFDM)
872  * 0x0A		12000 (OFDM)
873  * 0x0B		 6000 (OFDM)
874  * 0x0C		54000 (OFDM)
875  * 0x0D		36000 (OFDM)
876  * 0x0E		18000 (OFDM)
877  * 0x0F		 9000 (OFDM)
878  * 0x10 - 17	-Reserved-
879  * 0x18		11000L (CCK)
880  * 0x19		 5500L (CCK)
881  * 0x1A		 2000L (CCK)
882  * 0x1B		 1000L (CCK)
883  * 0x1C		11000S (CCK)
884  * 0x1D		 5500S (CCK)
885  * 0x1E		 2000S (CCK)
886  * 0x1F		-Reserved-
887  *
888  * "S" indicates CCK rates with short preamble and "L" with long preamble.
889  *
890  * AR5211 has different rate codes for CCK (802.11B) rates. It only uses the
891  * lowest 4 bits, so they are the same as above with a 0xF mask.
892  * (0xB, 0xA, 0x9 and 0x8 for 1M, 2M, 5.5M and 11M).
893  * We handle this in ath5k_setup_bands().
894  */
895 #define AR5K_MAX_RATES 32
896 
897 /* B */
898 #define ATH5K_RATE_CODE_1M	0x1B
899 #define ATH5K_RATE_CODE_2M	0x1A
900 #define ATH5K_RATE_CODE_5_5M	0x19
901 #define ATH5K_RATE_CODE_11M	0x18
902 /* A and G */
903 #define ATH5K_RATE_CODE_6M	0x0B
904 #define ATH5K_RATE_CODE_9M	0x0F
905 #define ATH5K_RATE_CODE_12M	0x0A
906 #define ATH5K_RATE_CODE_18M	0x0E
907 #define ATH5K_RATE_CODE_24M	0x09
908 #define ATH5K_RATE_CODE_36M	0x0D
909 #define ATH5K_RATE_CODE_48M	0x08
910 #define ATH5K_RATE_CODE_54M	0x0C
911 
912 /* Adding this flag to rate_code on B rates
913  * enables short preamble */
914 #define AR5K_SET_SHORT_PREAMBLE 0x04
915 
916 /*
917  * Crypto definitions
918  */
919 
920 #define AR5K_KEYCACHE_SIZE	8
921 extern bool ath5k_modparam_nohwcrypt;
922 
923 /***********************\
924  HW RELATED DEFINITIONS
925 \***********************/
926 
927 /*
928  * Misc definitions
929  */
930 #define	AR5K_RSSI_EP_MULTIPLIER	(1 << 7)
931 
932 #define AR5K_ASSERT_ENTRY(_e, _s) do {		\
933 	if (_e >= _s)				\
934 		return false;			\
935 } while (0)
936 
937 /*
938  * Hardware interrupt abstraction
939  */
940 
941 /**
942  * enum ath5k_int - Hardware interrupt masks helpers
943  * @AR5K_INT_RXOK: Frame successfully received
944  * @AR5K_INT_RXDESC: Request RX descriptor/Read RX descriptor
945  * @AR5K_INT_RXERR: Frame reception failed
946  * @AR5K_INT_RXNOFRM: No frame received within a specified time period
947  * @AR5K_INT_RXEOL: Reached "End Of List", means we need more RX descriptors
948  * @AR5K_INT_RXORN: Indicates we got RX FIFO overrun. Note that Rx overrun is
949  *		not always fatal, on some chips we can continue operation
950  *		without resetting the card, that's why %AR5K_INT_FATAL is not
951  *		common for all chips.
952  * @AR5K_INT_RX_ALL: Mask to identify all RX related interrupts
953  *
954  * @AR5K_INT_TXOK: Frame transmission success
955  * @AR5K_INT_TXDESC: Request TX descriptor/Read TX status descriptor
956  * @AR5K_INT_TXERR: Frame transmission failure
957  * @AR5K_INT_TXEOL: Received End Of List for VEOL (Virtual End Of List). The
958  *		Queue Control Unit (QCU) signals an EOL interrupt only if a
959  *		descriptor's LinkPtr is NULL. For more details, refer to:
960  *		"http://www.freepatentsonline.com/20030225739.html"
961  * @AR5K_INT_TXNOFRM: No frame was transmitted within a specified time period
962  * @AR5K_INT_TXURN: Indicates we got TX FIFO underrun. In such case we should
963  *		increase the TX trigger threshold.
964  * @AR5K_INT_TX_ALL: Mask to identify all TX related interrupts
965  *
966  * @AR5K_INT_MIB: Indicates the either Management Information Base counters or
967  *		one of the PHY error counters reached the maximum value and
968  *		should be read and cleared.
969  * @AR5K_INT_SWI: Software triggered interrupt.
970  * @AR5K_INT_RXPHY: RX PHY Error
971  * @AR5K_INT_RXKCM: RX Key cache miss
972  * @AR5K_INT_SWBA: SoftWare Beacon Alert - indicates its time to send a
973  *		beacon that must be handled in software. The alternative is if
974  *		you have VEOL support, in that case you let the hardware deal
975  *		with things.
976  * @AR5K_INT_BRSSI: Beacon received with an RSSI value below our threshold
977  * @AR5K_INT_BMISS: If in STA mode this indicates we have stopped seeing
978  *		beacons from the AP have associated with, we should probably
979  *		try to reassociate. When in IBSS mode this might mean we have
980  *		not received any beacons from any local stations. Note that
981  *		every station in an IBSS schedules to send beacons at the
982  *		Target Beacon Transmission Time (TBTT) with a random backoff.
983  * @AR5K_INT_BNR: Beacon queue got triggered (DMA beacon alert) while empty.
984  * @AR5K_INT_TIM: Beacon with local station's TIM bit set
985  * @AR5K_INT_DTIM: Beacon with DTIM bit and zero DTIM count received
986  * @AR5K_INT_DTIM_SYNC: DTIM sync lost
987  * @AR5K_INT_GPIO: GPIO interrupt is used for RF Kill switches connected to
988  *		our GPIO pins.
989  * @AR5K_INT_BCN_TIMEOUT: Beacon timeout, we waited after TBTT but got noting
990  * @AR5K_INT_CAB_TIMEOUT: We waited for CAB traffic after the beacon but got
991  *		nothing or an incomplete CAB frame sequence.
992  * @AR5K_INT_QCBRORN: A queue got it's CBR counter expired
993  * @AR5K_INT_QCBRURN: A queue got triggered wile empty
994  * @AR5K_INT_QTRIG: A queue got triggered
995  *
996  * @AR5K_INT_FATAL: Fatal errors were encountered, typically caused by bus/DMA
997  *		errors. Indicates we need to reset the card.
998  * @AR5K_INT_GLOBAL: Used to clear and set the IER
999  * @AR5K_INT_NOCARD: Signals the card has been removed
1000  * @AR5K_INT_COMMON: Common interrupts shared among MACs with the same
1001  *		bit value
1002  *
1003  * These are mapped to take advantage of some common bits
1004  * between the MACs, to be able to set intr properties
1005  * easier. Some of them are not used yet inside hw.c. Most map
1006  * to the respective hw interrupt value as they are common among different
1007  * MACs.
1008  */
1009 enum ath5k_int {
1010 	AR5K_INT_RXOK	= 0x00000001,
1011 	AR5K_INT_RXDESC	= 0x00000002,
1012 	AR5K_INT_RXERR	= 0x00000004,
1013 	AR5K_INT_RXNOFRM = 0x00000008,
1014 	AR5K_INT_RXEOL	= 0x00000010,
1015 	AR5K_INT_RXORN	= 0x00000020,
1016 	AR5K_INT_TXOK	= 0x00000040,
1017 	AR5K_INT_TXDESC	= 0x00000080,
1018 	AR5K_INT_TXERR	= 0x00000100,
1019 	AR5K_INT_TXNOFRM = 0x00000200,
1020 	AR5K_INT_TXEOL	= 0x00000400,
1021 	AR5K_INT_TXURN	= 0x00000800,
1022 	AR5K_INT_MIB	= 0x00001000,
1023 	AR5K_INT_SWI	= 0x00002000,
1024 	AR5K_INT_RXPHY	= 0x00004000,
1025 	AR5K_INT_RXKCM	= 0x00008000,
1026 	AR5K_INT_SWBA	= 0x00010000,
1027 	AR5K_INT_BRSSI	= 0x00020000,
1028 	AR5K_INT_BMISS	= 0x00040000,
1029 	AR5K_INT_FATAL	= 0x00080000, /* Non common */
1030 	AR5K_INT_BNR	= 0x00100000, /* Non common */
1031 	AR5K_INT_TIM	= 0x00200000, /* Non common */
1032 	AR5K_INT_DTIM	= 0x00400000, /* Non common */
1033 	AR5K_INT_DTIM_SYNC =	0x00800000, /* Non common */
1034 	AR5K_INT_GPIO	=	0x01000000,
1035 	AR5K_INT_BCN_TIMEOUT =	0x02000000, /* Non common */
1036 	AR5K_INT_CAB_TIMEOUT =	0x04000000, /* Non common */
1037 	AR5K_INT_QCBRORN =	0x08000000, /* Non common */
1038 	AR5K_INT_QCBRURN =	0x10000000, /* Non common */
1039 	AR5K_INT_QTRIG	=	0x20000000, /* Non common */
1040 	AR5K_INT_GLOBAL =	0x80000000,
1041 
1042 	AR5K_INT_TX_ALL = AR5K_INT_TXOK
1043 		| AR5K_INT_TXDESC
1044 		| AR5K_INT_TXERR
1045 		| AR5K_INT_TXNOFRM
1046 		| AR5K_INT_TXEOL
1047 		| AR5K_INT_TXURN,
1048 
1049 	AR5K_INT_RX_ALL = AR5K_INT_RXOK
1050 		| AR5K_INT_RXDESC
1051 		| AR5K_INT_RXERR
1052 		| AR5K_INT_RXNOFRM
1053 		| AR5K_INT_RXEOL
1054 		| AR5K_INT_RXORN,
1055 
1056 	AR5K_INT_COMMON  = AR5K_INT_RXOK
1057 		| AR5K_INT_RXDESC
1058 		| AR5K_INT_RXERR
1059 		| AR5K_INT_RXNOFRM
1060 		| AR5K_INT_RXEOL
1061 		| AR5K_INT_RXORN
1062 		| AR5K_INT_TXOK
1063 		| AR5K_INT_TXDESC
1064 		| AR5K_INT_TXERR
1065 		| AR5K_INT_TXNOFRM
1066 		| AR5K_INT_TXEOL
1067 		| AR5K_INT_TXURN
1068 		| AR5K_INT_MIB
1069 		| AR5K_INT_SWI
1070 		| AR5K_INT_RXPHY
1071 		| AR5K_INT_RXKCM
1072 		| AR5K_INT_SWBA
1073 		| AR5K_INT_BRSSI
1074 		| AR5K_INT_BMISS
1075 		| AR5K_INT_GPIO
1076 		| AR5K_INT_GLOBAL,
1077 
1078 	AR5K_INT_NOCARD	= 0xffffffff
1079 };
1080 
1081 /**
1082  * enum ath5k_calibration_mask - Mask which calibration is active at the moment
1083  * @AR5K_CALIBRATION_FULL: Full calibration (AGC + SHORT)
1084  * @AR5K_CALIBRATION_SHORT: Short calibration (NF + I/Q)
1085  * @AR5K_CALIBRATION_NF: Noise Floor calibration
1086  * @AR5K_CALIBRATION_ANI: Adaptive Noise Immunity
1087  */
1088 enum ath5k_calibration_mask {
1089 	AR5K_CALIBRATION_FULL = 0x01,
1090 	AR5K_CALIBRATION_SHORT = 0x02,
1091 	AR5K_CALIBRATION_NF = 0x04,
1092 	AR5K_CALIBRATION_ANI = 0x08,
1093 };
1094 
1095 /**
1096  * enum ath5k_power_mode - Power management modes
1097  * @AR5K_PM_UNDEFINED: Undefined
1098  * @AR5K_PM_AUTO: Allow card to sleep if possible
1099  * @AR5K_PM_AWAKE: Force card to wake up
1100  * @AR5K_PM_FULL_SLEEP: Force card to full sleep (DANGEROUS)
1101  * @AR5K_PM_NETWORK_SLEEP: Allow to sleep for a specified duration
1102  *
1103  * Currently only PM_AWAKE is used, FULL_SLEEP and NETWORK_SLEEP/AUTO
1104  * are also known to have problems on some cards. This is not a big
1105  * problem though because we can have almost the same effect as
1106  * FULL_SLEEP by putting card on warm reset (it's almost powered down).
1107  */
1108 enum ath5k_power_mode {
1109 	AR5K_PM_UNDEFINED = 0,
1110 	AR5K_PM_AUTO,
1111 	AR5K_PM_AWAKE,
1112 	AR5K_PM_FULL_SLEEP,
1113 	AR5K_PM_NETWORK_SLEEP,
1114 };
1115 
1116 /*
1117  * These match net80211 definitions (not used in
1118  * mac80211).
1119  * TODO: Clean this up
1120  */
1121 #define AR5K_LED_INIT	0 /*IEEE80211_S_INIT*/
1122 #define AR5K_LED_SCAN	1 /*IEEE80211_S_SCAN*/
1123 #define AR5K_LED_AUTH	2 /*IEEE80211_S_AUTH*/
1124 #define AR5K_LED_ASSOC	3 /*IEEE80211_S_ASSOC*/
1125 #define AR5K_LED_RUN	4 /*IEEE80211_S_RUN*/
1126 
1127 /* GPIO-controlled software LED */
1128 #define AR5K_SOFTLED_PIN	0
1129 #define AR5K_SOFTLED_ON		0
1130 #define AR5K_SOFTLED_OFF	1
1131 
1132 
1133 /* XXX: we *may* move cap_range stuff to struct wiphy */
1134 struct ath5k_capabilities {
1135 	/*
1136 	 * Supported PHY modes
1137 	 * (ie. AR5K_MODE_11A, AR5K_MODE_11B, ...)
1138 	 */
1139 	DECLARE_BITMAP(cap_mode, AR5K_MODE_MAX);
1140 
1141 	/*
1142 	 * Frequency range (without regulation restrictions)
1143 	 */
1144 	struct {
1145 		u16	range_2ghz_min;
1146 		u16	range_2ghz_max;
1147 		u16	range_5ghz_min;
1148 		u16	range_5ghz_max;
1149 	} cap_range;
1150 
1151 	/*
1152 	 * Values stored in the EEPROM (some of them...)
1153 	 */
1154 	struct ath5k_eeprom_info	cap_eeprom;
1155 
1156 	/*
1157 	 * Queue information
1158 	 */
1159 	struct {
1160 		u8	q_tx_num;
1161 	} cap_queues;
1162 
1163 	bool cap_has_phyerr_counters;
1164 	bool cap_has_mrr_support;
1165 	bool cap_needs_2GHz_ovr;
1166 };
1167 
1168 /* size of noise floor history (keep it a power of two) */
1169 #define ATH5K_NF_CAL_HIST_MAX	8
1170 struct ath5k_nfcal_hist {
1171 	s16 index;				/* current index into nfval */
1172 	s16 nfval[ATH5K_NF_CAL_HIST_MAX];	/* last few noise floors */
1173 };
1174 
1175 #define ATH5K_LED_MAX_NAME_LEN 31
1176 
1177 /*
1178  * State for LED triggers
1179  */
1180 struct ath5k_led {
1181 	char name[ATH5K_LED_MAX_NAME_LEN + 1];	/* name of the LED in sysfs */
1182 	struct ath5k_hw *ah;			/* driver state */
1183 	struct led_classdev led_dev;		/* led classdev */
1184 };
1185 
1186 /* Rfkill */
1187 struct ath5k_rfkill {
1188 	/* GPIO PIN for rfkill */
1189 	u16 gpio;
1190 	/* polarity of rfkill GPIO PIN */
1191 	bool polarity;
1192 	/* RFKILL toggle tasklet */
1193 	struct tasklet_struct toggleq;
1194 };
1195 
1196 /* statistics */
1197 struct ath5k_statistics {
1198 	/* antenna use */
1199 	unsigned int antenna_rx[5];	/* frames count per antenna RX */
1200 	unsigned int antenna_tx[5];	/* frames count per antenna TX */
1201 
1202 	/* frame errors */
1203 	unsigned int rx_all_count;	/* all RX frames, including errors */
1204 	unsigned int tx_all_count;	/* all TX frames, including errors */
1205 	unsigned int rx_bytes_count;	/* all RX bytes, including errored pkts
1206 					 * and the MAC headers for each packet
1207 					 */
1208 	unsigned int tx_bytes_count;	/* all TX bytes, including errored pkts
1209 					 * and the MAC headers and padding for
1210 					 * each packet.
1211 					 */
1212 	unsigned int rxerr_crc;
1213 	unsigned int rxerr_phy;
1214 	unsigned int rxerr_phy_code[32];
1215 	unsigned int rxerr_fifo;
1216 	unsigned int rxerr_decrypt;
1217 	unsigned int rxerr_mic;
1218 	unsigned int rxerr_proc;
1219 	unsigned int rxerr_jumbo;
1220 	unsigned int txerr_retry;
1221 	unsigned int txerr_fifo;
1222 	unsigned int txerr_filt;
1223 
1224 	/* MIB counters */
1225 	unsigned int ack_fail;
1226 	unsigned int rts_fail;
1227 	unsigned int rts_ok;
1228 	unsigned int fcs_error;
1229 	unsigned int beacons;
1230 
1231 	unsigned int mib_intr;
1232 	unsigned int rxorn_intr;
1233 	unsigned int rxeol_intr;
1234 };
1235 
1236 /*
1237  * Misc defines
1238  */
1239 
1240 #define AR5K_MAX_GPIO		10
1241 #define AR5K_MAX_RF_BANKS	8
1242 
1243 #if CHAN_DEBUG
1244 #define ATH_CHAN_MAX	(26 + 26 + 26 + 200 + 200)
1245 #else
1246 #define ATH_CHAN_MAX	(14 + 14 + 14 + 252 + 20)
1247 #endif
1248 
1249 #define	ATH_RXBUF	40		/* number of RX buffers */
1250 #define	ATH_TXBUF	200		/* number of TX buffers */
1251 #define ATH_BCBUF	4		/* number of beacon buffers */
1252 #define ATH5K_TXQ_LEN_MAX	(ATH_TXBUF / 4)		/* bufs per queue */
1253 #define ATH5K_TXQ_LEN_LOW	(ATH5K_TXQ_LEN_MAX / 2)	/* low mark */
1254 
1255 DECLARE_EWMA(beacon_rssi, 10, 8)
1256 
1257 /* Driver state associated with an instance of a device */
1258 struct ath5k_hw {
1259 	struct ath_common       common;
1260 
1261 	struct pci_dev		*pdev;
1262 	struct device		*dev;		/* for dma mapping */
1263 	int irq;
1264 	u16 devid;
1265 	void __iomem		*iobase;	/* address of the device */
1266 	struct mutex		lock;		/* dev-level lock */
1267 	struct ieee80211_hw	*hw;		/* IEEE 802.11 common */
1268 	struct ieee80211_supported_band sbands[NUM_NL80211_BANDS];
1269 	struct ieee80211_channel channels[ATH_CHAN_MAX];
1270 	struct ieee80211_rate	rates[NUM_NL80211_BANDS][AR5K_MAX_RATES];
1271 	s8			rate_idx[NUM_NL80211_BANDS][AR5K_MAX_RATES];
1272 	enum nl80211_iftype	opmode;
1273 
1274 #ifdef CONFIG_ATH5K_DEBUG
1275 	struct ath5k_dbg_info	debug;		/* debug info */
1276 #endif /* CONFIG_ATH5K_DEBUG */
1277 
1278 	struct ath5k_buf	*bufptr;	/* allocated buffer ptr */
1279 	struct ath5k_desc	*desc;		/* TX/RX descriptors */
1280 	dma_addr_t		desc_daddr;	/* DMA (physical) address */
1281 	size_t			desc_len;	/* size of TX/RX descriptors */
1282 
1283 	DECLARE_BITMAP(status, 4);
1284 #define ATH_STAT_INVALID	0		/* disable hardware accesses */
1285 #define ATH_STAT_LEDSOFT	2		/* enable LED gpio status */
1286 #define ATH_STAT_STARTED	3		/* opened & irqs enabled */
1287 #define ATH_STAT_RESET		4		/* hw reset */
1288 
1289 	unsigned int		filter_flags;	/* HW flags, AR5K_RX_FILTER_* */
1290 	unsigned int		fif_filter_flags; /* Current FIF_* filter flags */
1291 	struct ieee80211_channel *curchan;	/* current h/w channel */
1292 
1293 	u16			nvifs;
1294 
1295 	enum ath5k_int		imask;		/* interrupt mask copy */
1296 
1297 	spinlock_t		irqlock;
1298 	bool			rx_pending;	/* rx tasklet pending */
1299 	bool			tx_pending;	/* tx tasklet pending */
1300 
1301 	u8			bssidmask[ETH_ALEN];
1302 
1303 	unsigned int		led_pin,	/* GPIO pin for driving LED */
1304 				led_on;		/* pin setting for LED on */
1305 
1306 	struct work_struct	reset_work;	/* deferred chip reset */
1307 	struct work_struct	calib_work;	/* deferred phy calibration */
1308 
1309 	struct list_head	rxbuf;		/* receive buffer */
1310 	spinlock_t		rxbuflock;
1311 	u32			*rxlink;	/* link ptr in last RX desc */
1312 	struct tasklet_struct	rxtq;		/* rx intr tasklet */
1313 	struct ath5k_led	rx_led;		/* rx led */
1314 
1315 	struct list_head	txbuf;		/* transmit buffer */
1316 	spinlock_t		txbuflock;
1317 	unsigned int		txbuf_len;	/* buf count in txbuf list */
1318 	struct ath5k_txq	txqs[AR5K_NUM_TX_QUEUES];	/* tx queues */
1319 	struct tasklet_struct	txtq;		/* tx intr tasklet */
1320 	struct ath5k_led	tx_led;		/* tx led */
1321 
1322 	struct ath5k_rfkill	rf_kill;
1323 
1324 	spinlock_t		block;		/* protects beacon */
1325 	struct tasklet_struct	beacontq;	/* beacon intr tasklet */
1326 	struct list_head	bcbuf;		/* beacon buffer */
1327 	struct ieee80211_vif	*bslot[ATH_BCBUF];
1328 	u16			num_ap_vifs;
1329 	u16			num_adhoc_vifs;
1330 	u16			num_mesh_vifs;
1331 	unsigned int		bhalq,		/* SW q for outgoing beacons */
1332 				bmisscount,	/* missed beacon transmits */
1333 				bintval,	/* beacon interval in TU */
1334 				bsent;
1335 	unsigned int		nexttbtt;	/* next beacon time in TU */
1336 	struct ath5k_txq	*cabq;		/* content after beacon */
1337 
1338 	bool			assoc;		/* associate state */
1339 	bool			enable_beacon;	/* true if beacons are on */
1340 
1341 	struct ath5k_statistics	stats;
1342 
1343 	struct ath5k_ani_state	ani_state;
1344 	struct tasklet_struct	ani_tasklet;	/* ANI calibration */
1345 
1346 	struct delayed_work	tx_complete_work;
1347 
1348 	struct survey_info	survey;		/* collected survey info */
1349 
1350 	enum ath5k_int		ah_imr;
1351 
1352 	struct ieee80211_channel *ah_current_channel;
1353 	bool			ah_iq_cal_needed;
1354 	bool			ah_single_chip;
1355 
1356 	enum ath5k_version	ah_version;
1357 	enum ath5k_radio	ah_radio;
1358 	u32			ah_mac_srev;
1359 	u16			ah_mac_version;
1360 	u16			ah_phy_revision;
1361 	u16			ah_radio_5ghz_revision;
1362 	u16			ah_radio_2ghz_revision;
1363 
1364 #define ah_modes		ah_capabilities.cap_mode
1365 #define ah_ee_version		ah_capabilities.cap_eeprom.ee_version
1366 
1367 	u8			ah_retry_long;
1368 	u8			ah_retry_short;
1369 
1370 	bool			ah_use_32khz_clock;
1371 
1372 	u8			ah_coverage_class;
1373 	bool			ah_ack_bitrate_high;
1374 	u8			ah_bwmode;
1375 	bool			ah_short_slot;
1376 
1377 	/* Antenna Control */
1378 	u32			ah_ant_ctl[AR5K_EEPROM_N_MODES][AR5K_ANT_MAX];
1379 	u8			ah_ant_mode;
1380 	u8			ah_tx_ant;
1381 	u8			ah_def_ant;
1382 
1383 	struct ath5k_capabilities ah_capabilities;
1384 
1385 	struct ath5k_txq_info	ah_txq[AR5K_NUM_TX_QUEUES];
1386 	u32			ah_txq_status;
1387 	u32			ah_txq_imr_txok;
1388 	u32			ah_txq_imr_txerr;
1389 	u32			ah_txq_imr_txurn;
1390 	u32			ah_txq_imr_txdesc;
1391 	u32			ah_txq_imr_txeol;
1392 	u32			ah_txq_imr_cbrorn;
1393 	u32			ah_txq_imr_cbrurn;
1394 	u32			ah_txq_imr_qtrig;
1395 	u32			ah_txq_imr_nofrm;
1396 
1397 	u32			ah_txq_isr_txok_all;
1398 	u32			ah_txq_isr_txurn;
1399 	u32			ah_txq_isr_qcborn;
1400 	u32			ah_txq_isr_qcburn;
1401 	u32			ah_txq_isr_qtrig;
1402 
1403 	u32			*ah_rf_banks;
1404 	size_t			ah_rf_banks_size;
1405 	size_t			ah_rf_regs_count;
1406 	struct ath5k_gain	ah_gain;
1407 	u8			ah_offset[AR5K_MAX_RF_BANKS];
1408 
1409 
1410 	struct {
1411 		/* Temporary tables used for interpolation */
1412 		u8		tmpL[AR5K_EEPROM_N_PD_GAINS]
1413 					[AR5K_EEPROM_POWER_TABLE_SIZE];
1414 		u8		tmpR[AR5K_EEPROM_N_PD_GAINS]
1415 					[AR5K_EEPROM_POWER_TABLE_SIZE];
1416 		u8		txp_pd_table[AR5K_EEPROM_POWER_TABLE_SIZE * 2];
1417 		u16		txp_rates_power_table[AR5K_MAX_RATES];
1418 		u8		txp_min_idx;
1419 		bool		txp_tpc;
1420 		/* Values in 0.25dB units */
1421 		s16		txp_min_pwr;
1422 		s16		txp_max_pwr;
1423 		s16		txp_cur_pwr;
1424 		/* Values in 0.5dB units */
1425 		s16		txp_offset;
1426 		s16		txp_ofdm;
1427 		s16		txp_cck_ofdm_gainf_delta;
1428 		/* Value in dB units */
1429 		s16		txp_cck_ofdm_pwr_delta;
1430 		bool		txp_setup;
1431 		int		txp_requested;	/* Requested tx power in dBm */
1432 	} ah_txpower;
1433 
1434 	struct ath5k_nfcal_hist ah_nfcal_hist;
1435 
1436 	/* average beacon RSSI in our BSS (used by ANI) */
1437 	struct ewma_beacon_rssi	ah_beacon_rssi_avg;
1438 
1439 	/* noise floor from last periodic calibration */
1440 	s32			ah_noise_floor;
1441 
1442 	/* Calibration timestamp */
1443 	unsigned long		ah_cal_next_full;
1444 	unsigned long		ah_cal_next_short;
1445 	unsigned long		ah_cal_next_ani;
1446 
1447 	/* Calibration mask */
1448 	u8			ah_cal_mask;
1449 
1450 	/*
1451 	 * Function pointers
1452 	 */
1453 	int (*ah_setup_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
1454 		unsigned int, unsigned int, int, enum ath5k_pkt_type,
1455 		unsigned int, unsigned int, unsigned int, unsigned int,
1456 		unsigned int, unsigned int, unsigned int, unsigned int);
1457 	int (*ah_proc_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
1458 		struct ath5k_tx_status *);
1459 	int (*ah_proc_rx_desc)(struct ath5k_hw *, struct ath5k_desc *,
1460 		struct ath5k_rx_status *);
1461 };
1462 
1463 struct ath_bus_ops {
1464 	enum ath_bus_type ath_bus_type;
1465 	void (*read_cachesize)(struct ath_common *common, int *csz);
1466 	bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
1467 	int (*eeprom_read_mac)(struct ath5k_hw *ah, u8 *mac);
1468 };
1469 
1470 /*
1471  * Prototypes
1472  */
1473 extern const struct ieee80211_ops ath5k_hw_ops;
1474 
1475 /* Initialization and detach functions */
1476 int ath5k_hw_init(struct ath5k_hw *ah);
1477 void ath5k_hw_deinit(struct ath5k_hw *ah);
1478 
1479 int ath5k_sysfs_register(struct ath5k_hw *ah);
1480 void ath5k_sysfs_unregister(struct ath5k_hw *ah);
1481 
1482 /*Chip id helper functions */
1483 int ath5k_hw_read_srev(struct ath5k_hw *ah);
1484 
1485 /* LED functions */
1486 int ath5k_init_leds(struct ath5k_hw *ah);
1487 void ath5k_led_enable(struct ath5k_hw *ah);
1488 void ath5k_led_off(struct ath5k_hw *ah);
1489 void ath5k_unregister_leds(struct ath5k_hw *ah);
1490 
1491 
1492 /* Reset Functions */
1493 int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, struct ieee80211_channel *channel);
1494 int ath5k_hw_on_hold(struct ath5k_hw *ah);
1495 int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
1496 	   struct ieee80211_channel *channel, bool fast, bool skip_pcu);
1497 int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val,
1498 			      bool is_set);
1499 /* Power management functions */
1500 
1501 
1502 /* Clock rate related functions */
1503 unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec);
1504 unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock);
1505 void ath5k_hw_set_clockrate(struct ath5k_hw *ah);
1506 
1507 
1508 /* DMA Related Functions */
1509 void ath5k_hw_start_rx_dma(struct ath5k_hw *ah);
1510 u32 ath5k_hw_get_rxdp(struct ath5k_hw *ah);
1511 int ath5k_hw_set_rxdp(struct ath5k_hw *ah, u32 phys_addr);
1512 int ath5k_hw_start_tx_dma(struct ath5k_hw *ah, unsigned int queue);
1513 int ath5k_hw_stop_beacon_queue(struct ath5k_hw *ah, unsigned int queue);
1514 u32 ath5k_hw_get_txdp(struct ath5k_hw *ah, unsigned int queue);
1515 int ath5k_hw_set_txdp(struct ath5k_hw *ah, unsigned int queue,
1516 				u32 phys_addr);
1517 int ath5k_hw_update_tx_triglevel(struct ath5k_hw *ah, bool increase);
1518 /* Interrupt handling */
1519 bool ath5k_hw_is_intr_pending(struct ath5k_hw *ah);
1520 int ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask);
1521 enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum ath5k_int new_mask);
1522 void ath5k_hw_update_mib_counters(struct ath5k_hw *ah);
1523 /* Init/Stop functions */
1524 void ath5k_hw_dma_init(struct ath5k_hw *ah);
1525 int ath5k_hw_dma_stop(struct ath5k_hw *ah);
1526 
1527 /* EEPROM access functions */
1528 int ath5k_eeprom_init(struct ath5k_hw *ah);
1529 void ath5k_eeprom_detach(struct ath5k_hw *ah);
1530 int ath5k_eeprom_mode_from_channel(struct ath5k_hw *ah,
1531 		struct ieee80211_channel *channel);
1532 
1533 /* Protocol Control Unit Functions */
1534 /* Helpers */
1535 int ath5k_hw_get_frame_duration(struct ath5k_hw *ah, enum nl80211_band band,
1536 		int len, struct ieee80211_rate *rate, bool shortpre);
1537 unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah);
1538 unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah);
1539 int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype opmode);
1540 void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class);
1541 /* RX filter control*/
1542 int ath5k_hw_set_lladdr(struct ath5k_hw *ah, const u8 *mac);
1543 void ath5k_hw_set_bssid(struct ath5k_hw *ah);
1544 void ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask);
1545 void ath5k_hw_set_mcast_filter(struct ath5k_hw *ah, u32 filter0, u32 filter1);
1546 u32 ath5k_hw_get_rx_filter(struct ath5k_hw *ah);
1547 void ath5k_hw_set_rx_filter(struct ath5k_hw *ah, u32 filter);
1548 /* Receive (DRU) start/stop functions */
1549 void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah);
1550 void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah);
1551 /* Beacon control functions */
1552 u64 ath5k_hw_get_tsf64(struct ath5k_hw *ah);
1553 void ath5k_hw_set_tsf64(struct ath5k_hw *ah, u64 tsf64);
1554 void ath5k_hw_reset_tsf(struct ath5k_hw *ah);
1555 void ath5k_hw_init_beacon_timers(struct ath5k_hw *ah, u32 next_beacon,
1556 							u32 interval);
1557 bool ath5k_hw_check_beacon_timers(struct ath5k_hw *ah, int intval);
1558 /* Init function */
1559 void ath5k_hw_pcu_init(struct ath5k_hw *ah, enum nl80211_iftype op_mode);
1560 
1561 /* Queue Control Unit, DFS Control Unit Functions */
1562 int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue,
1563 			       struct ath5k_txq_info *queue_info);
1564 int ath5k_hw_set_tx_queueprops(struct ath5k_hw *ah, int queue,
1565 			       const struct ath5k_txq_info *queue_info);
1566 int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah,
1567 			    enum ath5k_tx_queue queue_type,
1568 			    struct ath5k_txq_info *queue_info);
1569 void ath5k_hw_set_tx_retry_limits(struct ath5k_hw *ah,
1570 				  unsigned int queue);
1571 u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue);
1572 void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue);
1573 int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue);
1574 int ath5k_hw_set_ifs_intervals(struct ath5k_hw *ah, unsigned int slot_time);
1575 /* Init function */
1576 int ath5k_hw_init_queues(struct ath5k_hw *ah);
1577 
1578 /* Hardware Descriptor Functions */
1579 int ath5k_hw_init_desc_functions(struct ath5k_hw *ah);
1580 int ath5k_hw_setup_rx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
1581 			   u32 size, unsigned int flags);
1582 int ath5k_hw_setup_mrr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
1583 	unsigned int tx_rate1, u_int tx_tries1, u_int tx_rate2,
1584 	u_int tx_tries2, unsigned int tx_rate3, u_int tx_tries3);
1585 
1586 
1587 /* GPIO Functions */
1588 void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state);
1589 int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio);
1590 int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio);
1591 u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio);
1592 int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val);
1593 void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio,
1594 			    u32 interrupt_level);
1595 
1596 
1597 /* RFkill Functions */
1598 void ath5k_rfkill_hw_start(struct ath5k_hw *ah);
1599 void ath5k_rfkill_hw_stop(struct ath5k_hw *ah);
1600 
1601 
1602 /* Misc functions TODO: Cleanup */
1603 int ath5k_hw_set_capabilities(struct ath5k_hw *ah);
1604 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid, u16 assoc_id);
1605 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);
1606 
1607 
1608 /* Initial register settings functions */
1609 int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);
1610 
1611 
1612 /* PHY functions */
1613 /* Misc PHY functions */
1614 u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, enum nl80211_band band);
1615 int ath5k_hw_phy_disable(struct ath5k_hw *ah);
1616 /* Gain_F optimization */
1617 enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah);
1618 int ath5k_hw_rfgain_opt_init(struct ath5k_hw *ah);
1619 /* PHY/RF channel functions */
1620 bool ath5k_channel_ok(struct ath5k_hw *ah, struct ieee80211_channel *channel);
1621 /* PHY calibration */
1622 void ath5k_hw_init_nfcal_hist(struct ath5k_hw *ah);
1623 int ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
1624 			   struct ieee80211_channel *channel);
1625 void ath5k_hw_update_noise_floor(struct ath5k_hw *ah);
1626 /* Spur mitigation */
1627 bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
1628 				  struct ieee80211_channel *channel);
1629 /* Antenna control */
1630 void ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode);
1631 void ath5k_hw_set_antenna_switch(struct ath5k_hw *ah, u8 ee_mode);
1632 /* TX power setup */
1633 int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower);
1634 /* Init function */
1635 int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
1636 				u8 mode, bool fast);
1637 
1638 /*
1639  * Functions used internally
1640  */
1641 
1642 static inline struct ath_common *ath5k_hw_common(struct ath5k_hw *ah)
1643 {
1644 	return &ah->common;
1645 }
1646 
1647 static inline struct ath_regulatory *ath5k_hw_regulatory(struct ath5k_hw *ah)
1648 {
1649 	return &(ath5k_hw_common(ah)->regulatory);
1650 }
1651 
1652 #ifdef CONFIG_ATH5K_AHB
1653 #define AR5K_AR2315_PCI_BASE	((void __iomem *)0xb0100000)
1654 
1655 static inline void __iomem *ath5k_ahb_reg(struct ath5k_hw *ah, u16 reg)
1656 {
1657 	/* On AR2315 and AR2317 the PCI clock domain registers
1658 	 * are outside of the WMAC register space */
1659 	if (unlikely((reg >= 0x4000) && (reg < 0x5000) &&
1660 	    (ah->ah_mac_srev >= AR5K_SREV_AR2315_R6)))
1661 		return AR5K_AR2315_PCI_BASE + reg;
1662 
1663 	return ah->iobase + reg;
1664 }
1665 
1666 static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
1667 {
1668 	return ioread32(ath5k_ahb_reg(ah, reg));
1669 }
1670 
1671 static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
1672 {
1673 	iowrite32(val, ath5k_ahb_reg(ah, reg));
1674 }
1675 
1676 #else
1677 
1678 static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
1679 {
1680 	return ioread32(ah->iobase + reg);
1681 }
1682 
1683 static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
1684 {
1685 	iowrite32(val, ah->iobase + reg);
1686 }
1687 
1688 #endif
1689 
1690 static inline enum ath_bus_type ath5k_get_bus_type(struct ath5k_hw *ah)
1691 {
1692 	return ath5k_hw_common(ah)->bus_ops->ath_bus_type;
1693 }
1694 
1695 static inline void ath5k_read_cachesize(struct ath_common *common, int *csz)
1696 {
1697 	common->bus_ops->read_cachesize(common, csz);
1698 }
1699 
1700 static inline bool ath5k_hw_nvram_read(struct ath5k_hw *ah, u32 off, u16 *data)
1701 {
1702 	struct ath_common *common = ath5k_hw_common(ah);
1703 	return common->bus_ops->eeprom_read(common, off, data);
1704 }
1705 
1706 static inline u32 ath5k_hw_bitswap(u32 val, unsigned int bits)
1707 {
1708 	u32 retval = 0, bit, i;
1709 
1710 	for (i = 0; i < bits; i++) {
1711 		bit = (val >> i) & 1;
1712 		retval = (retval << 1) | bit;
1713 	}
1714 
1715 	return retval;
1716 }
1717 
1718 #endif
1719