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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / ath / ath9k / ar9003_phy.c
1 /*
2 * Copyright (c) 2010-2011 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "hw.h"
18 #include "ar9003_phy.h"
19
20 static const int firstep_table[] =
21 /* level: 0 1 2 3 4 5 6 7 8 */
22 { -4, -2, 0, 2, 4, 6, 8, 10, 12 }; /* lvl 0-8, default 2 */
23
24 static const int cycpwrThr1_table[] =
25 /* level: 0 1 2 3 4 5 6 7 8 */
26 { -6, -4, -2, 0, 2, 4, 6, 8 }; /* lvl 0-7, default 3 */
27
28 /*
29 * register values to turn OFDM weak signal detection OFF
30 */
31 static const int m1ThreshLow_off = 127;
32 static const int m2ThreshLow_off = 127;
33 static const int m1Thresh_off = 127;
34 static const int m2Thresh_off = 127;
35 static const int m2CountThr_off = 31;
36 static const int m2CountThrLow_off = 63;
37 static const int m1ThreshLowExt_off = 127;
38 static const int m2ThreshLowExt_off = 127;
39 static const int m1ThreshExt_off = 127;
40 static const int m2ThreshExt_off = 127;
41
42 /**
43 * ar9003_hw_set_channel - set channel on single-chip device
44 * @ah: atheros hardware structure
45 * @chan:
46 *
47 * This is the function to change channel on single-chip devices, that is
48 * all devices after ar9280.
49 *
50 * This function takes the channel value in MHz and sets
51 * hardware channel value. Assumes writes have been enabled to analog bus.
52 *
53 * Actual Expression,
54 *
55 * For 2GHz channel,
56 * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
57 * (freq_ref = 40MHz)
58 *
59 * For 5GHz channel,
60 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10)
61 * (freq_ref = 40MHz/(24>>amodeRefSel))
62 *
63 * For 5GHz channels which are 5MHz spaced,
64 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
65 * (freq_ref = 40MHz)
66 */
67 static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
68 {
69 u16 bMode, fracMode = 0, aModeRefSel = 0;
70 u32 freq, channelSel = 0, reg32 = 0;
71 struct chan_centers centers;
72 int loadSynthChannel;
73
74 ath9k_hw_get_channel_centers(ah, chan, &centers);
75 freq = centers.synth_center;
76
77 if (freq < 4800) { /* 2 GHz, fractional mode */
78 if (AR_SREV_9330(ah)) {
79 u32 chan_frac;
80 u32 div;
81
82 if (ah->is_clk_25mhz)
83 div = 75;
84 else
85 div = 120;
86
87 channelSel = (freq * 4) / div;
88 chan_frac = (((freq * 4) % div) * 0x20000) / div;
89 channelSel = (channelSel << 17) | chan_frac;
90 } else if (AR_SREV_9485(ah)) {
91 u32 chan_frac;
92
93 /*
94 * freq_ref = 40 / (refdiva >> amoderefsel); where refdiva=1 and amoderefsel=0
95 * ndiv = ((chan_mhz * 4) / 3) / freq_ref;
96 * chansel = int(ndiv), chanfrac = (ndiv - chansel) * 0x20000
97 */
98 channelSel = (freq * 4) / 120;
99 chan_frac = (((freq * 4) % 120) * 0x20000) / 120;
100 channelSel = (channelSel << 17) | chan_frac;
101 } else if (AR_SREV_9340(ah)) {
102 if (ah->is_clk_25mhz) {
103 u32 chan_frac;
104
105 channelSel = (freq * 2) / 75;
106 chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
107 channelSel = (channelSel << 17) | chan_frac;
108 } else
109 channelSel = CHANSEL_2G(freq) >> 1;
110 } else
111 channelSel = CHANSEL_2G(freq);
112 /* Set to 2G mode */
113 bMode = 1;
114 } else {
115 if (AR_SREV_9340(ah) && ah->is_clk_25mhz) {
116 u32 chan_frac;
117
118 channelSel = (freq * 2) / 75;
119 chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
120 channelSel = (channelSel << 17) | chan_frac;
121 } else {
122 channelSel = CHANSEL_5G(freq);
123 /* Doubler is ON, so, divide channelSel by 2. */
124 channelSel >>= 1;
125 }
126 /* Set to 5G mode */
127 bMode = 0;
128 }
129
130 /* Enable fractional mode for all channels */
131 fracMode = 1;
132 aModeRefSel = 0;
133 loadSynthChannel = 0;
134
135 reg32 = (bMode << 29);
136 REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
137
138 /* Enable Long shift Select for Synthesizer */
139 REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_SYNTH4,
140 AR_PHY_SYNTH4_LONG_SHIFT_SELECT, 1);
141
142 /* Program Synth. setting */
143 reg32 = (channelSel << 2) | (fracMode << 30) |
144 (aModeRefSel << 28) | (loadSynthChannel << 31);
145 REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
146
147 /* Toggle Load Synth channel bit */
148 loadSynthChannel = 1;
149 reg32 = (channelSel << 2) | (fracMode << 30) |
150 (aModeRefSel << 28) | (loadSynthChannel << 31);
151 REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
152
153 ah->curchan = chan;
154 ah->curchan_rad_index = -1;
155
156 return 0;
157 }
158
159 /**
160 * ar9003_hw_spur_mitigate_mrc_cck - convert baseband spur frequency
161 * @ah: atheros hardware structure
162 * @chan:
163 *
164 * For single-chip solutions. Converts to baseband spur frequency given the
165 * input channel frequency and compute register settings below.
166 *
167 * Spur mitigation for MRC CCK
168 */
169 static void ar9003_hw_spur_mitigate_mrc_cck(struct ath_hw *ah,
170 struct ath9k_channel *chan)
171 {
172 static const u32 spur_freq[4] = { 2420, 2440, 2464, 2480 };
173 int cur_bb_spur, negative = 0, cck_spur_freq;
174 int i;
175 int range, max_spur_cnts, synth_freq;
176 u8 *spur_fbin_ptr = NULL;
177
178 /*
179 * Need to verify range +/- 10 MHz in control channel, otherwise spur
180 * is out-of-band and can be ignored.
181 */
182
183 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah)) {
184 spur_fbin_ptr = ar9003_get_spur_chan_ptr(ah,
185 IS_CHAN_2GHZ(chan));
186 if (spur_fbin_ptr[0] == 0) /* No spur */
187 return;
188 max_spur_cnts = 5;
189 if (IS_CHAN_HT40(chan)) {
190 range = 19;
191 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
192 AR_PHY_GC_DYN2040_PRI_CH) == 0)
193 synth_freq = chan->channel + 10;
194 else
195 synth_freq = chan->channel - 10;
196 } else {
197 range = 10;
198 synth_freq = chan->channel;
199 }
200 } else {
201 range = 10;
202 max_spur_cnts = 4;
203 synth_freq = chan->channel;
204 }
205
206 for (i = 0; i < max_spur_cnts; i++) {
207 negative = 0;
208 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah))
209 cur_bb_spur = FBIN2FREQ(spur_fbin_ptr[i],
210 IS_CHAN_2GHZ(chan)) - synth_freq;
211 else
212 cur_bb_spur = spur_freq[i] - synth_freq;
213
214 if (cur_bb_spur < 0) {
215 negative = 1;
216 cur_bb_spur = -cur_bb_spur;
217 }
218 if (cur_bb_spur < range) {
219 cck_spur_freq = (int)((cur_bb_spur << 19) / 11);
220
221 if (negative == 1)
222 cck_spur_freq = -cck_spur_freq;
223
224 cck_spur_freq = cck_spur_freq & 0xfffff;
225
226 REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
227 AR_PHY_AGC_CONTROL_YCOK_MAX, 0x7);
228 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
229 AR_PHY_CCK_SPUR_MIT_SPUR_RSSI_THR, 0x7f);
230 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
231 AR_PHY_CCK_SPUR_MIT_SPUR_FILTER_TYPE,
232 0x2);
233 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
234 AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT,
235 0x1);
236 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
237 AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ,
238 cck_spur_freq);
239
240 return;
241 }
242 }
243
244 REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
245 AR_PHY_AGC_CONTROL_YCOK_MAX, 0x5);
246 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
247 AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT, 0x0);
248 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
249 AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ, 0x0);
250 }
251
252 /* Clean all spur register fields */
253 static void ar9003_hw_spur_ofdm_clear(struct ath_hw *ah)
254 {
255 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
256 AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0);
257 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
258 AR_PHY_TIMING11_SPUR_FREQ_SD, 0);
259 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
260 AR_PHY_TIMING11_SPUR_DELTA_PHASE, 0);
261 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
262 AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, 0);
263 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
264 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0);
265 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
266 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0);
267 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
268 AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0);
269 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
270 AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 0);
271 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
272 AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 0);
273
274 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
275 AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0);
276 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
277 AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0);
278 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
279 AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0);
280 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
281 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, 0);
282 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
283 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, 0);
284 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
285 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, 0);
286 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
287 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0);
288 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
289 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0);
290 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
291 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0);
292 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
293 AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0);
294 }
295
296 static void ar9003_hw_spur_ofdm(struct ath_hw *ah,
297 int freq_offset,
298 int spur_freq_sd,
299 int spur_delta_phase,
300 int spur_subchannel_sd)
301 {
302 int mask_index = 0;
303
304 /* OFDM Spur mitigation */
305 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
306 AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0x1);
307 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
308 AR_PHY_TIMING11_SPUR_FREQ_SD, spur_freq_sd);
309 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
310 AR_PHY_TIMING11_SPUR_DELTA_PHASE, spur_delta_phase);
311 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
312 AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, spur_subchannel_sd);
313 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
314 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0x1);
315 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
316 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0x1);
317 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
318 AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0x1);
319 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
320 AR_PHY_SPUR_REG_SPUR_RSSI_THRESH, 34);
321 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
322 AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 1);
323
324 if (REG_READ_FIELD(ah, AR_PHY_MODE,
325 AR_PHY_MODE_DYNAMIC) == 0x1)
326 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
327 AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 1);
328
329 mask_index = (freq_offset << 4) / 5;
330 if (mask_index < 0)
331 mask_index = mask_index - 1;
332
333 mask_index = mask_index & 0x7f;
334
335 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
336 AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0x1);
337 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
338 AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0x1);
339 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
340 AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0x1);
341 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
342 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, mask_index);
343 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
344 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, mask_index);
345 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
346 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, mask_index);
347 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
348 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0xc);
349 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
350 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0xc);
351 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
352 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0xa0);
353 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
354 AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0xff);
355 }
356
357 static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
358 struct ath9k_channel *chan,
359 int freq_offset)
360 {
361 int spur_freq_sd = 0;
362 int spur_subchannel_sd = 0;
363 int spur_delta_phase = 0;
364
365 if (IS_CHAN_HT40(chan)) {
366 if (freq_offset < 0) {
367 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
368 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
369 spur_subchannel_sd = 1;
370 else
371 spur_subchannel_sd = 0;
372
373 spur_freq_sd = (freq_offset << 9) / 11;
374
375 } else {
376 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
377 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
378 spur_subchannel_sd = 0;
379 else
380 spur_subchannel_sd = 1;
381
382 spur_freq_sd = (freq_offset << 9) / 11;
383
384 }
385
386 spur_delta_phase = (freq_offset << 17) / 5;
387
388 } else {
389 spur_subchannel_sd = 0;
390 spur_freq_sd = (freq_offset << 9) /11;
391 spur_delta_phase = (freq_offset << 18) / 5;
392 }
393
394 spur_freq_sd = spur_freq_sd & 0x3ff;
395 spur_delta_phase = spur_delta_phase & 0xfffff;
396
397 ar9003_hw_spur_ofdm(ah,
398 freq_offset,
399 spur_freq_sd,
400 spur_delta_phase,
401 spur_subchannel_sd);
402 }
403
404 /* Spur mitigation for OFDM */
405 static void ar9003_hw_spur_mitigate_ofdm(struct ath_hw *ah,
406 struct ath9k_channel *chan)
407 {
408 int synth_freq;
409 int range = 10;
410 int freq_offset = 0;
411 int mode;
412 u8* spurChansPtr;
413 unsigned int i;
414 struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
415
416 if (IS_CHAN_5GHZ(chan)) {
417 spurChansPtr = &(eep->modalHeader5G.spurChans[0]);
418 mode = 0;
419 }
420 else {
421 spurChansPtr = &(eep->modalHeader2G.spurChans[0]);
422 mode = 1;
423 }
424
425 if (spurChansPtr[0] == 0)
426 return; /* No spur in the mode */
427
428 if (IS_CHAN_HT40(chan)) {
429 range = 19;
430 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
431 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
432 synth_freq = chan->channel - 10;
433 else
434 synth_freq = chan->channel + 10;
435 } else {
436 range = 10;
437 synth_freq = chan->channel;
438 }
439
440 ar9003_hw_spur_ofdm_clear(ah);
441
442 for (i = 0; i < AR_EEPROM_MODAL_SPURS && spurChansPtr[i]; i++) {
443 freq_offset = FBIN2FREQ(spurChansPtr[i], mode) - synth_freq;
444 if (abs(freq_offset) < range) {
445 ar9003_hw_spur_ofdm_work(ah, chan, freq_offset);
446 break;
447 }
448 }
449 }
450
451 static void ar9003_hw_spur_mitigate(struct ath_hw *ah,
452 struct ath9k_channel *chan)
453 {
454 ar9003_hw_spur_mitigate_mrc_cck(ah, chan);
455 ar9003_hw_spur_mitigate_ofdm(ah, chan);
456 }
457
458 static u32 ar9003_hw_compute_pll_control(struct ath_hw *ah,
459 struct ath9k_channel *chan)
460 {
461 u32 pll;
462
463 pll = SM(0x5, AR_RTC_9300_PLL_REFDIV);
464
465 if (chan && IS_CHAN_HALF_RATE(chan))
466 pll |= SM(0x1, AR_RTC_9300_PLL_CLKSEL);
467 else if (chan && IS_CHAN_QUARTER_RATE(chan))
468 pll |= SM(0x2, AR_RTC_9300_PLL_CLKSEL);
469
470 pll |= SM(0x2c, AR_RTC_9300_PLL_DIV);
471
472 return pll;
473 }
474
475 static void ar9003_hw_set_channel_regs(struct ath_hw *ah,
476 struct ath9k_channel *chan)
477 {
478 u32 phymode;
479 u32 enableDacFifo = 0;
480
481 enableDacFifo =
482 (REG_READ(ah, AR_PHY_GEN_CTRL) & AR_PHY_GC_ENABLE_DAC_FIFO);
483
484 /* Enable 11n HT, 20 MHz */
485 phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 |
486 AR_PHY_GC_SHORT_GI_40 | enableDacFifo;
487
488 /* Configure baseband for dynamic 20/40 operation */
489 if (IS_CHAN_HT40(chan)) {
490 phymode |= AR_PHY_GC_DYN2040_EN;
491 /* Configure control (primary) channel at +-10MHz */
492 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
493 (chan->chanmode == CHANNEL_G_HT40PLUS))
494 phymode |= AR_PHY_GC_DYN2040_PRI_CH;
495
496 }
497
498 /* make sure we preserve INI settings */
499 phymode |= REG_READ(ah, AR_PHY_GEN_CTRL);
500 /* turn off Green Field detection for STA for now */
501 phymode &= ~AR_PHY_GC_GF_DETECT_EN;
502
503 REG_WRITE(ah, AR_PHY_GEN_CTRL, phymode);
504
505 /* Configure MAC for 20/40 operation */
506 ath9k_hw_set11nmac2040(ah);
507
508 /* global transmit timeout (25 TUs default)*/
509 REG_WRITE(ah, AR_GTXTO, 25 << AR_GTXTO_TIMEOUT_LIMIT_S);
510 /* carrier sense timeout */
511 REG_WRITE(ah, AR_CST, 0xF << AR_CST_TIMEOUT_LIMIT_S);
512 }
513
514 static void ar9003_hw_init_bb(struct ath_hw *ah,
515 struct ath9k_channel *chan)
516 {
517 u32 synthDelay;
518
519 /*
520 * Wait for the frequency synth to settle (synth goes on
521 * via AR_PHY_ACTIVE_EN). Read the phy active delay register.
522 * Value is in 100ns increments.
523 */
524 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
525 if (IS_CHAN_B(chan))
526 synthDelay = (4 * synthDelay) / 22;
527 else
528 synthDelay /= 10;
529
530 /* Activate the PHY (includes baseband activate + synthesizer on) */
531 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
532
533 /*
534 * There is an issue if the AP starts the calibration before
535 * the base band timeout completes. This could result in the
536 * rx_clear false triggering. As a workaround we add delay an
537 * extra BASE_ACTIVATE_DELAY usecs to ensure this condition
538 * does not happen.
539 */
540 udelay(synthDelay + BASE_ACTIVATE_DELAY);
541 }
542
543 static void ar9003_hw_set_chain_masks(struct ath_hw *ah, u8 rx, u8 tx)
544 {
545 switch (rx) {
546 case 0x5:
547 REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
548 AR_PHY_SWAP_ALT_CHAIN);
549 case 0x3:
550 case 0x1:
551 case 0x2:
552 case 0x7:
553 REG_WRITE(ah, AR_PHY_RX_CHAINMASK, rx);
554 REG_WRITE(ah, AR_PHY_CAL_CHAINMASK, rx);
555 break;
556 default:
557 break;
558 }
559
560 if ((ah->caps.hw_caps & ATH9K_HW_CAP_APM) && (tx == 0x7))
561 REG_WRITE(ah, AR_SELFGEN_MASK, 0x3);
562 else if (AR_SREV_9462(ah))
563 /* xxx only when MCI support is enabled */
564 REG_WRITE(ah, AR_SELFGEN_MASK, 0x3);
565 else
566 REG_WRITE(ah, AR_SELFGEN_MASK, tx);
567
568 if (tx == 0x5) {
569 REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
570 AR_PHY_SWAP_ALT_CHAIN);
571 }
572 }
573
574 /*
575 * Override INI values with chip specific configuration.
576 */
577 static void ar9003_hw_override_ini(struct ath_hw *ah)
578 {
579 u32 val;
580
581 /*
582 * Set the RX_ABORT and RX_DIS and clear it only after
583 * RXE is set for MAC. This prevents frames with
584 * corrupted descriptor status.
585 */
586 REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
587
588 /*
589 * For AR9280 and above, there is a new feature that allows
590 * Multicast search based on both MAC Address and Key ID. By default,
591 * this feature is enabled. But since the driver is not using this
592 * feature, we switch it off; otherwise multicast search based on
593 * MAC addr only will fail.
594 */
595 val = REG_READ(ah, AR_PCU_MISC_MODE2) & (~AR_ADHOC_MCAST_KEYID_ENABLE);
596 REG_WRITE(ah, AR_PCU_MISC_MODE2,
597 val | AR_AGG_WEP_ENABLE_FIX | AR_AGG_WEP_ENABLE);
598
599 REG_SET_BIT(ah, AR_PHY_CCK_DETECT,
600 AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
601 }
602
603 static void ar9003_hw_prog_ini(struct ath_hw *ah,
604 struct ar5416IniArray *iniArr,
605 int column)
606 {
607 unsigned int i, regWrites = 0;
608
609 /* New INI format: Array may be undefined (pre, core, post arrays) */
610 if (!iniArr->ia_array)
611 return;
612
613 /*
614 * New INI format: Pre, core, and post arrays for a given subsystem
615 * may be modal (> 2 columns) or non-modal (2 columns). Determine if
616 * the array is non-modal and force the column to 1.
617 */
618 if (column >= iniArr->ia_columns)
619 column = 1;
620
621 for (i = 0; i < iniArr->ia_rows; i++) {
622 u32 reg = INI_RA(iniArr, i, 0);
623 u32 val = INI_RA(iniArr, i, column);
624
625 REG_WRITE(ah, reg, val);
626
627 DO_DELAY(regWrites);
628 }
629 }
630
631 static int ar9003_hw_process_ini(struct ath_hw *ah,
632 struct ath9k_channel *chan)
633 {
634 unsigned int regWrites = 0, i;
635 u32 modesIndex;
636
637 switch (chan->chanmode) {
638 case CHANNEL_A:
639 case CHANNEL_A_HT20:
640 modesIndex = 1;
641 break;
642 case CHANNEL_A_HT40PLUS:
643 case CHANNEL_A_HT40MINUS:
644 modesIndex = 2;
645 break;
646 case CHANNEL_G:
647 case CHANNEL_G_HT20:
648 case CHANNEL_B:
649 modesIndex = 4;
650 break;
651 case CHANNEL_G_HT40PLUS:
652 case CHANNEL_G_HT40MINUS:
653 modesIndex = 3;
654 break;
655
656 default:
657 return -EINVAL;
658 }
659
660 for (i = 0; i < ATH_INI_NUM_SPLIT; i++) {
661 ar9003_hw_prog_ini(ah, &ah->iniSOC[i], modesIndex);
662 ar9003_hw_prog_ini(ah, &ah->iniMac[i], modesIndex);
663 ar9003_hw_prog_ini(ah, &ah->iniBB[i], modesIndex);
664 ar9003_hw_prog_ini(ah, &ah->iniRadio[i], modesIndex);
665 if (i == ATH_INI_POST && AR_SREV_9462_20(ah))
666 ar9003_hw_prog_ini(ah,
667 &ah->ini_radio_post_sys2ant,
668 modesIndex);
669 }
670
671 REG_WRITE_ARRAY(&ah->iniModesRxGain, 1, regWrites);
672 REG_WRITE_ARRAY(&ah->iniModesTxGain, modesIndex, regWrites);
673
674 /*
675 * For 5GHz channels requiring Fast Clock, apply
676 * different modal values.
677 */
678 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
679 REG_WRITE_ARRAY(&ah->iniModesAdditional,
680 modesIndex, regWrites);
681
682 if (AR_SREV_9330(ah))
683 REG_WRITE_ARRAY(&ah->iniModesAdditional, 1, regWrites);
684
685 if (AR_SREV_9340(ah) && !ah->is_clk_25mhz)
686 REG_WRITE_ARRAY(&ah->iniModesAdditional_40M, 1, regWrites);
687
688 if (AR_SREV_9462(ah))
689 ar9003_hw_prog_ini(ah, &ah->ini_BTCOEX_MAX_TXPWR, 1);
690
691 ah->modes_index = modesIndex;
692 ar9003_hw_override_ini(ah);
693 ar9003_hw_set_channel_regs(ah, chan);
694 ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
695 ath9k_hw_apply_txpower(ah, chan);
696
697 if (AR_SREV_9462(ah)) {
698 if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0,
699 AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL))
700 ah->enabled_cals |= TX_IQ_CAL;
701 else
702 ah->enabled_cals &= ~TX_IQ_CAL;
703
704 if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE)
705 ah->enabled_cals |= TX_CL_CAL;
706 else
707 ah->enabled_cals &= ~TX_CL_CAL;
708 }
709
710 return 0;
711 }
712
713 static void ar9003_hw_set_rfmode(struct ath_hw *ah,
714 struct ath9k_channel *chan)
715 {
716 u32 rfMode = 0;
717
718 if (chan == NULL)
719 return;
720
721 rfMode |= (IS_CHAN_B(chan) || IS_CHAN_G(chan))
722 ? AR_PHY_MODE_DYNAMIC : AR_PHY_MODE_OFDM;
723
724 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
725 rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE);
726
727 REG_WRITE(ah, AR_PHY_MODE, rfMode);
728 }
729
730 static void ar9003_hw_mark_phy_inactive(struct ath_hw *ah)
731 {
732 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
733 }
734
735 static void ar9003_hw_set_delta_slope(struct ath_hw *ah,
736 struct ath9k_channel *chan)
737 {
738 u32 coef_scaled, ds_coef_exp, ds_coef_man;
739 u32 clockMhzScaled = 0x64000000;
740 struct chan_centers centers;
741
742 /*
743 * half and quarter rate can divide the scaled clock by 2 or 4
744 * scale for selected channel bandwidth
745 */
746 if (IS_CHAN_HALF_RATE(chan))
747 clockMhzScaled = clockMhzScaled >> 1;
748 else if (IS_CHAN_QUARTER_RATE(chan))
749 clockMhzScaled = clockMhzScaled >> 2;
750
751 /*
752 * ALGO -> coef = 1e8/fcarrier*fclock/40;
753 * scaled coef to provide precision for this floating calculation
754 */
755 ath9k_hw_get_channel_centers(ah, chan, &centers);
756 coef_scaled = clockMhzScaled / centers.synth_center;
757
758 ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
759 &ds_coef_exp);
760
761 REG_RMW_FIELD(ah, AR_PHY_TIMING3,
762 AR_PHY_TIMING3_DSC_MAN, ds_coef_man);
763 REG_RMW_FIELD(ah, AR_PHY_TIMING3,
764 AR_PHY_TIMING3_DSC_EXP, ds_coef_exp);
765
766 /*
767 * For Short GI,
768 * scaled coeff is 9/10 that of normal coeff
769 */
770 coef_scaled = (9 * coef_scaled) / 10;
771
772 ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
773 &ds_coef_exp);
774
775 /* for short gi */
776 REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
777 AR_PHY_SGI_DSC_MAN, ds_coef_man);
778 REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
779 AR_PHY_SGI_DSC_EXP, ds_coef_exp);
780 }
781
782 static bool ar9003_hw_rfbus_req(struct ath_hw *ah)
783 {
784 REG_WRITE(ah, AR_PHY_RFBUS_REQ, AR_PHY_RFBUS_REQ_EN);
785 return ath9k_hw_wait(ah, AR_PHY_RFBUS_GRANT, AR_PHY_RFBUS_GRANT_EN,
786 AR_PHY_RFBUS_GRANT_EN, AH_WAIT_TIMEOUT);
787 }
788
789 /*
790 * Wait for the frequency synth to settle (synth goes on via PHY_ACTIVE_EN).
791 * Read the phy active delay register. Value is in 100ns increments.
792 */
793 static void ar9003_hw_rfbus_done(struct ath_hw *ah)
794 {
795 u32 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
796 if (IS_CHAN_B(ah->curchan))
797 synthDelay = (4 * synthDelay) / 22;
798 else
799 synthDelay /= 10;
800
801 udelay(synthDelay + BASE_ACTIVATE_DELAY);
802
803 REG_WRITE(ah, AR_PHY_RFBUS_REQ, 0);
804 }
805
806 static bool ar9003_hw_ani_control(struct ath_hw *ah,
807 enum ath9k_ani_cmd cmd, int param)
808 {
809 struct ath_common *common = ath9k_hw_common(ah);
810 struct ath9k_channel *chan = ah->curchan;
811 struct ar5416AniState *aniState = &chan->ani;
812 s32 value, value2;
813
814 switch (cmd & ah->ani_function) {
815 case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
816 /*
817 * on == 1 means ofdm weak signal detection is ON
818 * on == 1 is the default, for less noise immunity
819 *
820 * on == 0 means ofdm weak signal detection is OFF
821 * on == 0 means more noise imm
822 */
823 u32 on = param ? 1 : 0;
824 /*
825 * make register setting for default
826 * (weak sig detect ON) come from INI file
827 */
828 int m1ThreshLow = on ?
829 aniState->iniDef.m1ThreshLow : m1ThreshLow_off;
830 int m2ThreshLow = on ?
831 aniState->iniDef.m2ThreshLow : m2ThreshLow_off;
832 int m1Thresh = on ?
833 aniState->iniDef.m1Thresh : m1Thresh_off;
834 int m2Thresh = on ?
835 aniState->iniDef.m2Thresh : m2Thresh_off;
836 int m2CountThr = on ?
837 aniState->iniDef.m2CountThr : m2CountThr_off;
838 int m2CountThrLow = on ?
839 aniState->iniDef.m2CountThrLow : m2CountThrLow_off;
840 int m1ThreshLowExt = on ?
841 aniState->iniDef.m1ThreshLowExt : m1ThreshLowExt_off;
842 int m2ThreshLowExt = on ?
843 aniState->iniDef.m2ThreshLowExt : m2ThreshLowExt_off;
844 int m1ThreshExt = on ?
845 aniState->iniDef.m1ThreshExt : m1ThreshExt_off;
846 int m2ThreshExt = on ?
847 aniState->iniDef.m2ThreshExt : m2ThreshExt_off;
848
849 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
850 AR_PHY_SFCORR_LOW_M1_THRESH_LOW,
851 m1ThreshLow);
852 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
853 AR_PHY_SFCORR_LOW_M2_THRESH_LOW,
854 m2ThreshLow);
855 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
856 AR_PHY_SFCORR_M1_THRESH, m1Thresh);
857 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
858 AR_PHY_SFCORR_M2_THRESH, m2Thresh);
859 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
860 AR_PHY_SFCORR_M2COUNT_THR, m2CountThr);
861 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
862 AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW,
863 m2CountThrLow);
864
865 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
866 AR_PHY_SFCORR_EXT_M1_THRESH_LOW, m1ThreshLowExt);
867 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
868 AR_PHY_SFCORR_EXT_M2_THRESH_LOW, m2ThreshLowExt);
869 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
870 AR_PHY_SFCORR_EXT_M1_THRESH, m1ThreshExt);
871 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
872 AR_PHY_SFCORR_EXT_M2_THRESH, m2ThreshExt);
873
874 if (on)
875 REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
876 AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
877 else
878 REG_CLR_BIT(ah, AR_PHY_SFCORR_LOW,
879 AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
880
881 if (!on != aniState->ofdmWeakSigDetectOff) {
882 ath_dbg(common, ATH_DBG_ANI,
883 "** ch %d: ofdm weak signal: %s=>%s\n",
884 chan->channel,
885 !aniState->ofdmWeakSigDetectOff ?
886 "on" : "off",
887 on ? "on" : "off");
888 if (on)
889 ah->stats.ast_ani_ofdmon++;
890 else
891 ah->stats.ast_ani_ofdmoff++;
892 aniState->ofdmWeakSigDetectOff = !on;
893 }
894 break;
895 }
896 case ATH9K_ANI_FIRSTEP_LEVEL:{
897 u32 level = param;
898
899 if (level >= ARRAY_SIZE(firstep_table)) {
900 ath_dbg(common, ATH_DBG_ANI,
901 "ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n",
902 level, ARRAY_SIZE(firstep_table));
903 return false;
904 }
905
906 /*
907 * make register setting relative to default
908 * from INI file & cap value
909 */
910 value = firstep_table[level] -
911 firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
912 aniState->iniDef.firstep;
913 if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN)
914 value = ATH9K_SIG_FIRSTEP_SETTING_MIN;
915 if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX)
916 value = ATH9K_SIG_FIRSTEP_SETTING_MAX;
917 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
918 AR_PHY_FIND_SIG_FIRSTEP,
919 value);
920 /*
921 * we need to set first step low register too
922 * make register setting relative to default
923 * from INI file & cap value
924 */
925 value2 = firstep_table[level] -
926 firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
927 aniState->iniDef.firstepLow;
928 if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN)
929 value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN;
930 if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX)
931 value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX;
932
933 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
934 AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW, value2);
935
936 if (level != aniState->firstepLevel) {
937 ath_dbg(common, ATH_DBG_ANI,
938 "** ch %d: level %d=>%d[def:%d] firstep[level]=%d ini=%d\n",
939 chan->channel,
940 aniState->firstepLevel,
941 level,
942 ATH9K_ANI_FIRSTEP_LVL_NEW,
943 value,
944 aniState->iniDef.firstep);
945 ath_dbg(common, ATH_DBG_ANI,
946 "** ch %d: level %d=>%d[def:%d] firstep_low[level]=%d ini=%d\n",
947 chan->channel,
948 aniState->firstepLevel,
949 level,
950 ATH9K_ANI_FIRSTEP_LVL_NEW,
951 value2,
952 aniState->iniDef.firstepLow);
953 if (level > aniState->firstepLevel)
954 ah->stats.ast_ani_stepup++;
955 else if (level < aniState->firstepLevel)
956 ah->stats.ast_ani_stepdown++;
957 aniState->firstepLevel = level;
958 }
959 break;
960 }
961 case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
962 u32 level = param;
963
964 if (level >= ARRAY_SIZE(cycpwrThr1_table)) {
965 ath_dbg(common, ATH_DBG_ANI,
966 "ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n",
967 level, ARRAY_SIZE(cycpwrThr1_table));
968 return false;
969 }
970 /*
971 * make register setting relative to default
972 * from INI file & cap value
973 */
974 value = cycpwrThr1_table[level] -
975 cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
976 aniState->iniDef.cycpwrThr1;
977 if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
978 value = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
979 if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
980 value = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
981 REG_RMW_FIELD(ah, AR_PHY_TIMING5,
982 AR_PHY_TIMING5_CYCPWR_THR1,
983 value);
984
985 /*
986 * set AR_PHY_EXT_CCA for extension channel
987 * make register setting relative to default
988 * from INI file & cap value
989 */
990 value2 = cycpwrThr1_table[level] -
991 cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
992 aniState->iniDef.cycpwrThr1Ext;
993 if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
994 value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
995 if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
996 value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
997 REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
998 AR_PHY_EXT_CYCPWR_THR1, value2);
999
1000 if (level != aniState->spurImmunityLevel) {
1001 ath_dbg(common, ATH_DBG_ANI,
1002 "** ch %d: level %d=>%d[def:%d] cycpwrThr1[level]=%d ini=%d\n",
1003 chan->channel,
1004 aniState->spurImmunityLevel,
1005 level,
1006 ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
1007 value,
1008 aniState->iniDef.cycpwrThr1);
1009 ath_dbg(common, ATH_DBG_ANI,
1010 "** ch %d: level %d=>%d[def:%d] cycpwrThr1Ext[level]=%d ini=%d\n",
1011 chan->channel,
1012 aniState->spurImmunityLevel,
1013 level,
1014 ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
1015 value2,
1016 aniState->iniDef.cycpwrThr1Ext);
1017 if (level > aniState->spurImmunityLevel)
1018 ah->stats.ast_ani_spurup++;
1019 else if (level < aniState->spurImmunityLevel)
1020 ah->stats.ast_ani_spurdown++;
1021 aniState->spurImmunityLevel = level;
1022 }
1023 break;
1024 }
1025 case ATH9K_ANI_MRC_CCK:{
1026 /*
1027 * is_on == 1 means MRC CCK ON (default, less noise imm)
1028 * is_on == 0 means MRC CCK is OFF (more noise imm)
1029 */
1030 bool is_on = param ? 1 : 0;
1031 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1032 AR_PHY_MRC_CCK_ENABLE, is_on);
1033 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1034 AR_PHY_MRC_CCK_MUX_REG, is_on);
1035 if (!is_on != aniState->mrcCCKOff) {
1036 ath_dbg(common, ATH_DBG_ANI,
1037 "** ch %d: MRC CCK: %s=>%s\n",
1038 chan->channel,
1039 !aniState->mrcCCKOff ? "on" : "off",
1040 is_on ? "on" : "off");
1041 if (is_on)
1042 ah->stats.ast_ani_ccklow++;
1043 else
1044 ah->stats.ast_ani_cckhigh++;
1045 aniState->mrcCCKOff = !is_on;
1046 }
1047 break;
1048 }
1049 case ATH9K_ANI_PRESENT:
1050 break;
1051 default:
1052 ath_dbg(common, ATH_DBG_ANI, "invalid cmd %u\n", cmd);
1053 return false;
1054 }
1055
1056 ath_dbg(common, ATH_DBG_ANI,
1057 "ANI parameters: SI=%d, ofdmWS=%s FS=%d MRCcck=%s listenTime=%d ofdmErrs=%d cckErrs=%d\n",
1058 aniState->spurImmunityLevel,
1059 !aniState->ofdmWeakSigDetectOff ? "on" : "off",
1060 aniState->firstepLevel,
1061 !aniState->mrcCCKOff ? "on" : "off",
1062 aniState->listenTime,
1063 aniState->ofdmPhyErrCount,
1064 aniState->cckPhyErrCount);
1065 return true;
1066 }
1067
1068 static void ar9003_hw_do_getnf(struct ath_hw *ah,
1069 int16_t nfarray[NUM_NF_READINGS])
1070 {
1071 #define AR_PHY_CH_MINCCA_PWR 0x1FF00000
1072 #define AR_PHY_CH_MINCCA_PWR_S 20
1073 #define AR_PHY_CH_EXT_MINCCA_PWR 0x01FF0000
1074 #define AR_PHY_CH_EXT_MINCCA_PWR_S 16
1075
1076 int16_t nf;
1077 int i;
1078
1079 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1080 if (ah->rxchainmask & BIT(i)) {
1081 nf = MS(REG_READ(ah, ah->nf_regs[i]),
1082 AR_PHY_CH_MINCCA_PWR);
1083 nfarray[i] = sign_extend32(nf, 8);
1084
1085 if (IS_CHAN_HT40(ah->curchan)) {
1086 u8 ext_idx = AR9300_MAX_CHAINS + i;
1087
1088 nf = MS(REG_READ(ah, ah->nf_regs[ext_idx]),
1089 AR_PHY_CH_EXT_MINCCA_PWR);
1090 nfarray[ext_idx] = sign_extend32(nf, 8);
1091 }
1092 }
1093 }
1094 }
1095
1096 static void ar9003_hw_set_nf_limits(struct ath_hw *ah)
1097 {
1098 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ;
1099 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_2GHZ;
1100 if (AR_SREV_9330(ah))
1101 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9330_2GHZ;
1102 else
1103 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9300_2GHZ;
1104 ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_5GHZ;
1105 ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_5GHZ;
1106 ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9300_5GHZ;
1107 }
1108
1109 /*
1110 * Initialize the ANI register values with default (ini) values.
1111 * This routine is called during a (full) hardware reset after
1112 * all the registers are initialised from the INI.
1113 */
1114 static void ar9003_hw_ani_cache_ini_regs(struct ath_hw *ah)
1115 {
1116 struct ar5416AniState *aniState;
1117 struct ath_common *common = ath9k_hw_common(ah);
1118 struct ath9k_channel *chan = ah->curchan;
1119 struct ath9k_ani_default *iniDef;
1120 u32 val;
1121
1122 aniState = &ah->curchan->ani;
1123 iniDef = &aniState->iniDef;
1124
1125 ath_dbg(common, ATH_DBG_ANI,
1126 "ver %d.%d opmode %u chan %d Mhz/0x%x\n",
1127 ah->hw_version.macVersion,
1128 ah->hw_version.macRev,
1129 ah->opmode,
1130 chan->channel,
1131 chan->channelFlags);
1132
1133 val = REG_READ(ah, AR_PHY_SFCORR);
1134 iniDef->m1Thresh = MS(val, AR_PHY_SFCORR_M1_THRESH);
1135 iniDef->m2Thresh = MS(val, AR_PHY_SFCORR_M2_THRESH);
1136 iniDef->m2CountThr = MS(val, AR_PHY_SFCORR_M2COUNT_THR);
1137
1138 val = REG_READ(ah, AR_PHY_SFCORR_LOW);
1139 iniDef->m1ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M1_THRESH_LOW);
1140 iniDef->m2ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M2_THRESH_LOW);
1141 iniDef->m2CountThrLow = MS(val, AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW);
1142
1143 val = REG_READ(ah, AR_PHY_SFCORR_EXT);
1144 iniDef->m1ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH);
1145 iniDef->m2ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH);
1146 iniDef->m1ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH_LOW);
1147 iniDef->m2ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH_LOW);
1148 iniDef->firstep = REG_READ_FIELD(ah,
1149 AR_PHY_FIND_SIG,
1150 AR_PHY_FIND_SIG_FIRSTEP);
1151 iniDef->firstepLow = REG_READ_FIELD(ah,
1152 AR_PHY_FIND_SIG_LOW,
1153 AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW);
1154 iniDef->cycpwrThr1 = REG_READ_FIELD(ah,
1155 AR_PHY_TIMING5,
1156 AR_PHY_TIMING5_CYCPWR_THR1);
1157 iniDef->cycpwrThr1Ext = REG_READ_FIELD(ah,
1158 AR_PHY_EXT_CCA,
1159 AR_PHY_EXT_CYCPWR_THR1);
1160
1161 /* these levels just got reset to defaults by the INI */
1162 aniState->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL_NEW;
1163 aniState->firstepLevel = ATH9K_ANI_FIRSTEP_LVL_NEW;
1164 aniState->ofdmWeakSigDetectOff = !ATH9K_ANI_USE_OFDM_WEAK_SIG;
1165 aniState->mrcCCKOff = !ATH9K_ANI_ENABLE_MRC_CCK;
1166 }
1167
1168 static void ar9003_hw_set_radar_params(struct ath_hw *ah,
1169 struct ath_hw_radar_conf *conf)
1170 {
1171 u32 radar_0 = 0, radar_1 = 0;
1172
1173 if (!conf) {
1174 REG_CLR_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_ENA);
1175 return;
1176 }
1177
1178 radar_0 |= AR_PHY_RADAR_0_ENA | AR_PHY_RADAR_0_FFT_ENA;
1179 radar_0 |= SM(conf->fir_power, AR_PHY_RADAR_0_FIRPWR);
1180 radar_0 |= SM(conf->radar_rssi, AR_PHY_RADAR_0_RRSSI);
1181 radar_0 |= SM(conf->pulse_height, AR_PHY_RADAR_0_HEIGHT);
1182 radar_0 |= SM(conf->pulse_rssi, AR_PHY_RADAR_0_PRSSI);
1183 radar_0 |= SM(conf->pulse_inband, AR_PHY_RADAR_0_INBAND);
1184
1185 radar_1 |= AR_PHY_RADAR_1_MAX_RRSSI;
1186 radar_1 |= AR_PHY_RADAR_1_BLOCK_CHECK;
1187 radar_1 |= SM(conf->pulse_maxlen, AR_PHY_RADAR_1_MAXLEN);
1188 radar_1 |= SM(conf->pulse_inband_step, AR_PHY_RADAR_1_RELSTEP_THRESH);
1189 radar_1 |= SM(conf->radar_inband, AR_PHY_RADAR_1_RELPWR_THRESH);
1190
1191 REG_WRITE(ah, AR_PHY_RADAR_0, radar_0);
1192 REG_WRITE(ah, AR_PHY_RADAR_1, radar_1);
1193 if (conf->ext_channel)
1194 REG_SET_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1195 else
1196 REG_CLR_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1197 }
1198
1199 static void ar9003_hw_set_radar_conf(struct ath_hw *ah)
1200 {
1201 struct ath_hw_radar_conf *conf = &ah->radar_conf;
1202
1203 conf->fir_power = -28;
1204 conf->radar_rssi = 0;
1205 conf->pulse_height = 10;
1206 conf->pulse_rssi = 24;
1207 conf->pulse_inband = 8;
1208 conf->pulse_maxlen = 255;
1209 conf->pulse_inband_step = 12;
1210 conf->radar_inband = 8;
1211 }
1212
1213 static void ar9003_hw_antdiv_comb_conf_get(struct ath_hw *ah,
1214 struct ath_hw_antcomb_conf *antconf)
1215 {
1216 u32 regval;
1217
1218 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1219 antconf->main_lna_conf = (regval & AR_PHY_9485_ANT_DIV_MAIN_LNACONF) >>
1220 AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S;
1221 antconf->alt_lna_conf = (regval & AR_PHY_9485_ANT_DIV_ALT_LNACONF) >>
1222 AR_PHY_9485_ANT_DIV_ALT_LNACONF_S;
1223 antconf->fast_div_bias = (regval & AR_PHY_9485_ANT_FAST_DIV_BIAS) >>
1224 AR_PHY_9485_ANT_FAST_DIV_BIAS_S;
1225
1226 if (AR_SREV_9330_11(ah)) {
1227 antconf->lna1_lna2_delta = -9;
1228 antconf->div_group = 1;
1229 } else if (AR_SREV_9485(ah)) {
1230 antconf->lna1_lna2_delta = -9;
1231 antconf->div_group = 2;
1232 } else {
1233 antconf->lna1_lna2_delta = -3;
1234 antconf->div_group = 0;
1235 }
1236 }
1237
1238 static void ar9003_hw_antdiv_comb_conf_set(struct ath_hw *ah,
1239 struct ath_hw_antcomb_conf *antconf)
1240 {
1241 u32 regval;
1242
1243 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1244 regval &= ~(AR_PHY_9485_ANT_DIV_MAIN_LNACONF |
1245 AR_PHY_9485_ANT_DIV_ALT_LNACONF |
1246 AR_PHY_9485_ANT_FAST_DIV_BIAS |
1247 AR_PHY_9485_ANT_DIV_MAIN_GAINTB |
1248 AR_PHY_9485_ANT_DIV_ALT_GAINTB);
1249 regval |= ((antconf->main_lna_conf <<
1250 AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S)
1251 & AR_PHY_9485_ANT_DIV_MAIN_LNACONF);
1252 regval |= ((antconf->alt_lna_conf << AR_PHY_9485_ANT_DIV_ALT_LNACONF_S)
1253 & AR_PHY_9485_ANT_DIV_ALT_LNACONF);
1254 regval |= ((antconf->fast_div_bias << AR_PHY_9485_ANT_FAST_DIV_BIAS_S)
1255 & AR_PHY_9485_ANT_FAST_DIV_BIAS);
1256 regval |= ((antconf->main_gaintb << AR_PHY_9485_ANT_DIV_MAIN_GAINTB_S)
1257 & AR_PHY_9485_ANT_DIV_MAIN_GAINTB);
1258 regval |= ((antconf->alt_gaintb << AR_PHY_9485_ANT_DIV_ALT_GAINTB_S)
1259 & AR_PHY_9485_ANT_DIV_ALT_GAINTB);
1260
1261 REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1262 }
1263
1264 static int ar9003_hw_fast_chan_change(struct ath_hw *ah,
1265 struct ath9k_channel *chan,
1266 u8 *ini_reloaded)
1267 {
1268 unsigned int regWrites = 0;
1269 u32 modesIndex;
1270
1271 switch (chan->chanmode) {
1272 case CHANNEL_A:
1273 case CHANNEL_A_HT20:
1274 modesIndex = 1;
1275 break;
1276 case CHANNEL_A_HT40PLUS:
1277 case CHANNEL_A_HT40MINUS:
1278 modesIndex = 2;
1279 break;
1280 case CHANNEL_G:
1281 case CHANNEL_G_HT20:
1282 case CHANNEL_B:
1283 modesIndex = 4;
1284 break;
1285 case CHANNEL_G_HT40PLUS:
1286 case CHANNEL_G_HT40MINUS:
1287 modesIndex = 3;
1288 break;
1289
1290 default:
1291 return -EINVAL;
1292 }
1293
1294 if (modesIndex == ah->modes_index) {
1295 *ini_reloaded = false;
1296 goto set_rfmode;
1297 }
1298
1299 ar9003_hw_prog_ini(ah, &ah->iniSOC[ATH_INI_POST], modesIndex);
1300 ar9003_hw_prog_ini(ah, &ah->iniMac[ATH_INI_POST], modesIndex);
1301 ar9003_hw_prog_ini(ah, &ah->iniBB[ATH_INI_POST], modesIndex);
1302 ar9003_hw_prog_ini(ah, &ah->iniRadio[ATH_INI_POST], modesIndex);
1303 if (AR_SREV_9462_20(ah))
1304 ar9003_hw_prog_ini(ah,
1305 &ah->ini_radio_post_sys2ant,
1306 modesIndex);
1307
1308 REG_WRITE_ARRAY(&ah->iniModesTxGain, modesIndex, regWrites);
1309
1310 /*
1311 * For 5GHz channels requiring Fast Clock, apply
1312 * different modal values.
1313 */
1314 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1315 REG_WRITE_ARRAY(&ah->iniModesAdditional, modesIndex, regWrites);
1316
1317 if (AR_SREV_9330(ah))
1318 REG_WRITE_ARRAY(&ah->iniModesAdditional, 1, regWrites);
1319
1320 if (AR_SREV_9340(ah) && !ah->is_clk_25mhz)
1321 REG_WRITE_ARRAY(&ah->iniModesAdditional_40M, 1, regWrites);
1322
1323 ah->modes_index = modesIndex;
1324 *ini_reloaded = true;
1325
1326 set_rfmode:
1327 ar9003_hw_set_rfmode(ah, chan);
1328 return 0;
1329 }
1330
1331 void ar9003_hw_attach_phy_ops(struct ath_hw *ah)
1332 {
1333 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1334 struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1335 static const u32 ar9300_cca_regs[6] = {
1336 AR_PHY_CCA_0,
1337 AR_PHY_CCA_1,
1338 AR_PHY_CCA_2,
1339 AR_PHY_EXT_CCA,
1340 AR_PHY_EXT_CCA_1,
1341 AR_PHY_EXT_CCA_2,
1342 };
1343
1344 priv_ops->rf_set_freq = ar9003_hw_set_channel;
1345 priv_ops->spur_mitigate_freq = ar9003_hw_spur_mitigate;
1346 priv_ops->compute_pll_control = ar9003_hw_compute_pll_control;
1347 priv_ops->set_channel_regs = ar9003_hw_set_channel_regs;
1348 priv_ops->init_bb = ar9003_hw_init_bb;
1349 priv_ops->process_ini = ar9003_hw_process_ini;
1350 priv_ops->set_rfmode = ar9003_hw_set_rfmode;
1351 priv_ops->mark_phy_inactive = ar9003_hw_mark_phy_inactive;
1352 priv_ops->set_delta_slope = ar9003_hw_set_delta_slope;
1353 priv_ops->rfbus_req = ar9003_hw_rfbus_req;
1354 priv_ops->rfbus_done = ar9003_hw_rfbus_done;
1355 priv_ops->ani_control = ar9003_hw_ani_control;
1356 priv_ops->do_getnf = ar9003_hw_do_getnf;
1357 priv_ops->ani_cache_ini_regs = ar9003_hw_ani_cache_ini_regs;
1358 priv_ops->set_radar_params = ar9003_hw_set_radar_params;
1359 priv_ops->fast_chan_change = ar9003_hw_fast_chan_change;
1360
1361 ops->antdiv_comb_conf_get = ar9003_hw_antdiv_comb_conf_get;
1362 ops->antdiv_comb_conf_set = ar9003_hw_antdiv_comb_conf_set;
1363
1364 ar9003_hw_set_nf_limits(ah);
1365 ar9003_hw_set_radar_conf(ah);
1366 memcpy(ah->nf_regs, ar9300_cca_regs, sizeof(ah->nf_regs));
1367 }
1368
1369 void ar9003_hw_bb_watchdog_config(struct ath_hw *ah)
1370 {
1371 struct ath_common *common = ath9k_hw_common(ah);
1372 u32 idle_tmo_ms = ah->bb_watchdog_timeout_ms;
1373 u32 val, idle_count;
1374
1375 if (!idle_tmo_ms) {
1376 /* disable IRQ, disable chip-reset for BB panic */
1377 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
1378 REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) &
1379 ~(AR_PHY_WATCHDOG_RST_ENABLE |
1380 AR_PHY_WATCHDOG_IRQ_ENABLE));
1381
1382 /* disable watchdog in non-IDLE mode, disable in IDLE mode */
1383 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
1384 REG_READ(ah, AR_PHY_WATCHDOG_CTL_1) &
1385 ~(AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
1386 AR_PHY_WATCHDOG_IDLE_ENABLE));
1387
1388 ath_dbg(common, ATH_DBG_RESET, "Disabled BB Watchdog\n");
1389 return;
1390 }
1391
1392 /* enable IRQ, disable chip-reset for BB watchdog */
1393 val = REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) & AR_PHY_WATCHDOG_CNTL2_MASK;
1394 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
1395 (val | AR_PHY_WATCHDOG_IRQ_ENABLE) &
1396 ~AR_PHY_WATCHDOG_RST_ENABLE);
1397
1398 /* bound limit to 10 secs */
1399 if (idle_tmo_ms > 10000)
1400 idle_tmo_ms = 10000;
1401
1402 /*
1403 * The time unit for watchdog event is 2^15 44/88MHz cycles.
1404 *
1405 * For HT20 we have a time unit of 2^15/44 MHz = .74 ms per tick
1406 * For HT40 we have a time unit of 2^15/88 MHz = .37 ms per tick
1407 *
1408 * Given we use fast clock now in 5 GHz, these time units should
1409 * be common for both 2 GHz and 5 GHz.
1410 */
1411 idle_count = (100 * idle_tmo_ms) / 74;
1412 if (ah->curchan && IS_CHAN_HT40(ah->curchan))
1413 idle_count = (100 * idle_tmo_ms) / 37;
1414
1415 /*
1416 * enable watchdog in non-IDLE mode, disable in IDLE mode,
1417 * set idle time-out.
1418 */
1419 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
1420 AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
1421 AR_PHY_WATCHDOG_IDLE_MASK |
1422 (AR_PHY_WATCHDOG_NON_IDLE_MASK & (idle_count << 2)));
1423
1424 ath_dbg(common, ATH_DBG_RESET,
1425 "Enabled BB Watchdog timeout (%u ms)\n",
1426 idle_tmo_ms);
1427 }
1428
1429 void ar9003_hw_bb_watchdog_read(struct ath_hw *ah)
1430 {
1431 /*
1432 * we want to avoid printing in ISR context so we save the
1433 * watchdog status to be printed later in bottom half context.
1434 */
1435 ah->bb_watchdog_last_status = REG_READ(ah, AR_PHY_WATCHDOG_STATUS);
1436
1437 /*
1438 * the watchdog timer should reset on status read but to be sure
1439 * sure we write 0 to the watchdog status bit.
1440 */
1441 REG_WRITE(ah, AR_PHY_WATCHDOG_STATUS,
1442 ah->bb_watchdog_last_status & ~AR_PHY_WATCHDOG_STATUS_CLR);
1443 }
1444
1445 void ar9003_hw_bb_watchdog_dbg_info(struct ath_hw *ah)
1446 {
1447 struct ath_common *common = ath9k_hw_common(ah);
1448 u32 status;
1449
1450 if (likely(!(common->debug_mask & ATH_DBG_RESET)))
1451 return;
1452
1453 status = ah->bb_watchdog_last_status;
1454 ath_dbg(common, ATH_DBG_RESET,
1455 "\n==== BB update: BB status=0x%08x ====\n", status);
1456 ath_dbg(common, ATH_DBG_RESET,
1457 "** BB state: wd=%u det=%u rdar=%u rOFDM=%d rCCK=%u tOFDM=%u tCCK=%u agc=%u src=%u **\n",
1458 MS(status, AR_PHY_WATCHDOG_INFO),
1459 MS(status, AR_PHY_WATCHDOG_DET_HANG),
1460 MS(status, AR_PHY_WATCHDOG_RADAR_SM),
1461 MS(status, AR_PHY_WATCHDOG_RX_OFDM_SM),
1462 MS(status, AR_PHY_WATCHDOG_RX_CCK_SM),
1463 MS(status, AR_PHY_WATCHDOG_TX_OFDM_SM),
1464 MS(status, AR_PHY_WATCHDOG_TX_CCK_SM),
1465 MS(status, AR_PHY_WATCHDOG_AGC_SM),
1466 MS(status, AR_PHY_WATCHDOG_SRCH_SM));
1467
1468 ath_dbg(common, ATH_DBG_RESET,
1469 "** BB WD cntl: cntl1=0x%08x cntl2=0x%08x **\n",
1470 REG_READ(ah, AR_PHY_WATCHDOG_CTL_1),
1471 REG_READ(ah, AR_PHY_WATCHDOG_CTL_2));
1472 ath_dbg(common, ATH_DBG_RESET,
1473 "** BB mode: BB_gen_controls=0x%08x **\n",
1474 REG_READ(ah, AR_PHY_GEN_CTRL));
1475
1476 #define PCT(_field) (common->cc_survey._field * 100 / common->cc_survey.cycles)
1477 if (common->cc_survey.cycles)
1478 ath_dbg(common, ATH_DBG_RESET,
1479 "** BB busy times: rx_clear=%d%%, rx_frame=%d%%, tx_frame=%d%% **\n",
1480 PCT(rx_busy), PCT(rx_frame), PCT(tx_frame));
1481
1482 ath_dbg(common, ATH_DBG_RESET,
1483 "==== BB update: done ====\n\n");
1484 }
1485 EXPORT_SYMBOL(ar9003_hw_bb_watchdog_dbg_info);
1486
1487 void ar9003_hw_disable_phy_restart(struct ath_hw *ah)
1488 {
1489 u32 val;
1490
1491 /* While receiving unsupported rate frame rx state machine
1492 * gets into a state 0xb and if phy_restart happens in that
1493 * state, BB would go hang. If RXSM is in 0xb state after
1494 * first bb panic, ensure to disable the phy_restart.
1495 */
1496 if (!((MS(ah->bb_watchdog_last_status,
1497 AR_PHY_WATCHDOG_RX_OFDM_SM) == 0xb) ||
1498 ah->bb_hang_rx_ofdm))
1499 return;
1500
1501 ah->bb_hang_rx_ofdm = true;
1502 val = REG_READ(ah, AR_PHY_RESTART);
1503 val &= ~AR_PHY_RESTART_ENA;
1504
1505 REG_WRITE(ah, AR_PHY_RESTART, val);
1506 }
1507 EXPORT_SYMBOL(ar9003_hw_disable_phy_restart);
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