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spi-topcliff-pch: add recovery processing in case wait-event timeout
[zen-stable.git] / drivers / net / wireless / ath / ath9k / ar9003_phy.c
blob2b0bfb8cca02d023da420b842f058b904807f646
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 <linux/export.h>
18 #include "hw.h"
19 #include "ar9003_phy.h"
20
21 static const int firstep_table[] =
22 /* level: 0 1 2 3 4 5 6 7 8 */
23 { -4, -2, 0, 2, 4, 6, 8, 10, 12 }; /* lvl 0-8, default 2 */
24
25 static const int cycpwrThr1_table[] =
26 /* level: 0 1 2 3 4 5 6 7 8 */
27 { -6, -4, -2, 0, 2, 4, 6, 8 }; /* lvl 0-7, default 3 */
28
29 /*
30 * register values to turn OFDM weak signal detection OFF
31 */
32 static const int m1ThreshLow_off = 127;
33 static const int m2ThreshLow_off = 127;
34 static const int m1Thresh_off = 127;
35 static const int m2Thresh_off = 127;
36 static const int m2CountThr_off = 31;
37 static const int m2CountThrLow_off = 63;
38 static const int m1ThreshLowExt_off = 127;
39 static const int m2ThreshLowExt_off = 127;
40 static const int m1ThreshExt_off = 127;
41 static const int m2ThreshExt_off = 127;
42
43 /**
44 * ar9003_hw_set_channel - set channel on single-chip device
45 * @ah: atheros hardware structure
46 * @chan:
47 *
48 * This is the function to change channel on single-chip devices, that is
49 * for AR9300 family of chipsets.
50 *
51 * This function takes the channel value in MHz and sets
52 * hardware channel value. Assumes writes have been enabled to analog bus.
53 *
54 * Actual Expression,
55 *
56 * For 2GHz channel,
57 * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
58 * (freq_ref = 40MHz)
59 *
60 * For 5GHz channel,
61 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10)
62 * (freq_ref = 40MHz/(24>>amodeRefSel))
63 *
64 * For 5GHz channels which are 5MHz spaced,
65 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
66 * (freq_ref = 40MHz)
67 */
68 static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
69 {
70 u16 bMode, fracMode = 0, aModeRefSel = 0;
71 u32 freq, channelSel = 0, reg32 = 0;
72 struct chan_centers centers;
73 int loadSynthChannel;
74
75 ath9k_hw_get_channel_centers(ah, chan, &centers);
76 freq = centers.synth_center;
77
78 if (freq < 4800) { /* 2 GHz, fractional mode */
79 if (AR_SREV_9330(ah)) {
80 u32 chan_frac;
81 u32 div;
82
83 if (ah->is_clk_25mhz)
84 div = 75;
85 else
86 div = 120;
87
88 channelSel = (freq * 4) / div;
89 chan_frac = (((freq * 4) % div) * 0x20000) / div;
90 channelSel = (channelSel << 17) | chan_frac;
91 } else if (AR_SREV_9485(ah)) {
92 u32 chan_frac;
93
94 /*
95 * freq_ref = 40 / (refdiva >> amoderefsel); where refdiva=1 and amoderefsel=0
96 * ndiv = ((chan_mhz * 4) / 3) / freq_ref;
97 * chansel = int(ndiv), chanfrac = (ndiv - chansel) * 0x20000
98 */
99 channelSel = (freq * 4) / 120;
100 chan_frac = (((freq * 4) % 120) * 0x20000) / 120;
101 channelSel = (channelSel << 17) | chan_frac;
102 } else if (AR_SREV_9340(ah)) {
103 if (ah->is_clk_25mhz) {
104 u32 chan_frac;
105
106 channelSel = (freq * 2) / 75;
107 chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
108 channelSel = (channelSel << 17) | chan_frac;
109 } else
110 channelSel = CHANSEL_2G(freq) >> 1;
111 } else
112 channelSel = CHANSEL_2G(freq);
113 /* Set to 2G mode */
114 bMode = 1;
115 } else {
116 if (AR_SREV_9340(ah) && ah->is_clk_25mhz) {
117 u32 chan_frac;
118
119 channelSel = (freq * 2) / 75;
120 chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
121 channelSel = (channelSel << 17) | chan_frac;
122 } else {
123 channelSel = CHANSEL_5G(freq);
124 /* Doubler is ON, so, divide channelSel by 2. */
125 channelSel >>= 1;
126 }
127 /* Set to 5G mode */
128 bMode = 0;
129 }
130
131 /* Enable fractional mode for all channels */
132 fracMode = 1;
133 aModeRefSel = 0;
134 loadSynthChannel = 0;
135
136 reg32 = (bMode << 29);
137 REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
138
139 /* Enable Long shift Select for Synthesizer */
140 REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_SYNTH4,
141 AR_PHY_SYNTH4_LONG_SHIFT_SELECT, 1);
142
143 /* Program Synth. setting */
144 reg32 = (channelSel << 2) | (fracMode << 30) |
145 (aModeRefSel << 28) | (loadSynthChannel << 31);
146 REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
147
148 /* Toggle Load Synth channel bit */
149 loadSynthChannel = 1;
150 reg32 = (channelSel << 2) | (fracMode << 30) |
151 (aModeRefSel << 28) | (loadSynthChannel << 31);
152 REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
153
154 ah->curchan = chan;
155 ah->curchan_rad_index = -1;
156
157 return 0;
158 }
159
160 /**
161 * ar9003_hw_spur_mitigate_mrc_cck - convert baseband spur frequency
162 * @ah: atheros hardware structure
163 * @chan:
164 *
165 * For single-chip solutions. Converts to baseband spur frequency given the
166 * input channel frequency and compute register settings below.
167 *
168 * Spur mitigation for MRC CCK
169 */
170 static void ar9003_hw_spur_mitigate_mrc_cck(struct ath_hw *ah,
171 struct ath9k_channel *chan)
172 {
173 static const u32 spur_freq[4] = { 2420, 2440, 2464, 2480 };
174 int cur_bb_spur, negative = 0, cck_spur_freq;
175 int i;
176 int range, max_spur_cnts, synth_freq;
177 u8 *spur_fbin_ptr = NULL;
178
179 /*
180 * Need to verify range +/- 10 MHz in control channel, otherwise spur
181 * is out-of-band and can be ignored.
182 */
183
184 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah)) {
185 spur_fbin_ptr = ar9003_get_spur_chan_ptr(ah,
186 IS_CHAN_2GHZ(chan));
187 if (spur_fbin_ptr[0] == 0) /* No spur */
188 return;
189 max_spur_cnts = 5;
190 if (IS_CHAN_HT40(chan)) {
191 range = 19;
192 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
193 AR_PHY_GC_DYN2040_PRI_CH) == 0)
194 synth_freq = chan->channel + 10;
195 else
196 synth_freq = chan->channel - 10;
197 } else {
198 range = 10;
199 synth_freq = chan->channel;
200 }
201 } else {
202 range = AR_SREV_9462(ah) ? 5 : 10;
203 max_spur_cnts = 4;
204 synth_freq = chan->channel;
205 }
206
207 for (i = 0; i < max_spur_cnts; i++) {
208 if (AR_SREV_9462(ah) && (i == 0 || i == 3))
209 continue;
210 negative = 0;
211 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah))
212 cur_bb_spur = FBIN2FREQ(spur_fbin_ptr[i],
213 IS_CHAN_2GHZ(chan)) - synth_freq;
214 else
215 cur_bb_spur = spur_freq[i] - synth_freq;
216
217 if (cur_bb_spur < 0) {
218 negative = 1;
219 cur_bb_spur = -cur_bb_spur;
220 }
221 if (cur_bb_spur < range) {
222 cck_spur_freq = (int)((cur_bb_spur << 19) / 11);
223
224 if (negative == 1)
225 cck_spur_freq = -cck_spur_freq;
226
227 cck_spur_freq = cck_spur_freq & 0xfffff;
228
229 REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
230 AR_PHY_AGC_CONTROL_YCOK_MAX, 0x7);
231 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
232 AR_PHY_CCK_SPUR_MIT_SPUR_RSSI_THR, 0x7f);
233 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
234 AR_PHY_CCK_SPUR_MIT_SPUR_FILTER_TYPE,
235 0x2);
236 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
237 AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT,
238 0x1);
239 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
240 AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ,
241 cck_spur_freq);
242
243 return;
244 }
245 }
246
247 REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
248 AR_PHY_AGC_CONTROL_YCOK_MAX, 0x5);
249 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
250 AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT, 0x0);
251 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
252 AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ, 0x0);
253 }
254
255 /* Clean all spur register fields */
256 static void ar9003_hw_spur_ofdm_clear(struct ath_hw *ah)
257 {
258 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
259 AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0);
260 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
261 AR_PHY_TIMING11_SPUR_FREQ_SD, 0);
262 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
263 AR_PHY_TIMING11_SPUR_DELTA_PHASE, 0);
264 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
265 AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, 0);
266 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
267 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0);
268 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
269 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0);
270 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
271 AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0);
272 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
273 AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 0);
274 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
275 AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 0);
276
277 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
278 AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0);
279 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
280 AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0);
281 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
282 AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0);
283 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
284 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, 0);
285 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
286 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, 0);
287 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
288 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, 0);
289 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
290 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0);
291 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
292 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0);
293 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
294 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0);
295 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
296 AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0);
297 }
298
299 static void ar9003_hw_spur_ofdm(struct ath_hw *ah,
300 int freq_offset,
301 int spur_freq_sd,
302 int spur_delta_phase,
303 int spur_subchannel_sd)
304 {
305 int mask_index = 0;
306
307 /* OFDM Spur mitigation */
308 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
309 AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0x1);
310 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
311 AR_PHY_TIMING11_SPUR_FREQ_SD, spur_freq_sd);
312 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
313 AR_PHY_TIMING11_SPUR_DELTA_PHASE, spur_delta_phase);
314 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
315 AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, spur_subchannel_sd);
316 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
317 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0x1);
318 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
319 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0x1);
320 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
321 AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0x1);
322 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
323 AR_PHY_SPUR_REG_SPUR_RSSI_THRESH, 34);
324 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
325 AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 1);
326
327 if (REG_READ_FIELD(ah, AR_PHY_MODE,
328 AR_PHY_MODE_DYNAMIC) == 0x1)
329 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
330 AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 1);
331
332 mask_index = (freq_offset << 4) / 5;
333 if (mask_index < 0)
334 mask_index = mask_index - 1;
335
336 mask_index = mask_index & 0x7f;
337
338 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
339 AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0x1);
340 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
341 AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0x1);
342 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
343 AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0x1);
344 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
345 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, mask_index);
346 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
347 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, mask_index);
348 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
349 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, mask_index);
350 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
351 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0xc);
352 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
353 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0xc);
354 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
355 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0xa0);
356 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
357 AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0xff);
358 }
359
360 static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
361 struct ath9k_channel *chan,
362 int freq_offset)
363 {
364 int spur_freq_sd = 0;
365 int spur_subchannel_sd = 0;
366 int spur_delta_phase = 0;
367
368 if (IS_CHAN_HT40(chan)) {
369 if (freq_offset < 0) {
370 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
371 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
372 spur_subchannel_sd = 1;
373 else
374 spur_subchannel_sd = 0;
375
376 spur_freq_sd = (freq_offset << 9) / 11;
377
378 } else {
379 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
380 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
381 spur_subchannel_sd = 0;
382 else
383 spur_subchannel_sd = 1;
384
385 spur_freq_sd = (freq_offset << 9) / 11;
386
387 }
388
389 spur_delta_phase = (freq_offset << 17) / 5;
390
391 } else {
392 spur_subchannel_sd = 0;
393 spur_freq_sd = (freq_offset << 9) /11;
394 spur_delta_phase = (freq_offset << 18) / 5;
395 }
396
397 spur_freq_sd = spur_freq_sd & 0x3ff;
398 spur_delta_phase = spur_delta_phase & 0xfffff;
399
400 ar9003_hw_spur_ofdm(ah,
401 freq_offset,
402 spur_freq_sd,
403 spur_delta_phase,
404 spur_subchannel_sd);
405 }
406
407 /* Spur mitigation for OFDM */
408 static void ar9003_hw_spur_mitigate_ofdm(struct ath_hw *ah,
409 struct ath9k_channel *chan)
410 {
411 int synth_freq;
412 int range = 10;
413 int freq_offset = 0;
414 int mode;
415 u8* spurChansPtr;
416 unsigned int i;
417 struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
418
419 if (IS_CHAN_5GHZ(chan)) {
420 spurChansPtr = &(eep->modalHeader5G.spurChans[0]);
421 mode = 0;
422 }
423 else {
424 spurChansPtr = &(eep->modalHeader2G.spurChans[0]);
425 mode = 1;
426 }
427
428 if (spurChansPtr[0] == 0)
429 return; /* No spur in the mode */
430
431 if (IS_CHAN_HT40(chan)) {
432 range = 19;
433 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
434 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
435 synth_freq = chan->channel - 10;
436 else
437 synth_freq = chan->channel + 10;
438 } else {
439 range = 10;
440 synth_freq = chan->channel;
441 }
442
443 ar9003_hw_spur_ofdm_clear(ah);
444
445 for (i = 0; i < AR_EEPROM_MODAL_SPURS && spurChansPtr[i]; i++) {
446 freq_offset = FBIN2FREQ(spurChansPtr[i], mode) - synth_freq;
447 if (abs(freq_offset) < range) {
448 ar9003_hw_spur_ofdm_work(ah, chan, freq_offset);
449 break;
450 }
451 }
452 }
453
454 static void ar9003_hw_spur_mitigate(struct ath_hw *ah,
455 struct ath9k_channel *chan)
456 {
457 ar9003_hw_spur_mitigate_mrc_cck(ah, chan);
458 ar9003_hw_spur_mitigate_ofdm(ah, chan);
459 }
460
461 static u32 ar9003_hw_compute_pll_control(struct ath_hw *ah,
462 struct ath9k_channel *chan)
463 {
464 u32 pll;
465
466 pll = SM(0x5, AR_RTC_9300_PLL_REFDIV);
467
468 if (chan && IS_CHAN_HALF_RATE(chan))
469 pll |= SM(0x1, AR_RTC_9300_PLL_CLKSEL);
470 else if (chan && IS_CHAN_QUARTER_RATE(chan))
471 pll |= SM(0x2, AR_RTC_9300_PLL_CLKSEL);
472
473 pll |= SM(0x2c, AR_RTC_9300_PLL_DIV);
474
475 return pll;
476 }
477
478 static void ar9003_hw_set_channel_regs(struct ath_hw *ah,
479 struct ath9k_channel *chan)
480 {
481 u32 phymode;
482 u32 enableDacFifo = 0;
483
484 enableDacFifo =
485 (REG_READ(ah, AR_PHY_GEN_CTRL) & AR_PHY_GC_ENABLE_DAC_FIFO);
486
487 /* Enable 11n HT, 20 MHz */
488 phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 |
489 AR_PHY_GC_SHORT_GI_40 | enableDacFifo;
490
491 /* Configure baseband for dynamic 20/40 operation */
492 if (IS_CHAN_HT40(chan)) {
493 phymode |= AR_PHY_GC_DYN2040_EN;
494 /* Configure control (primary) channel at +-10MHz */
495 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
496 (chan->chanmode == CHANNEL_G_HT40PLUS))
497 phymode |= AR_PHY_GC_DYN2040_PRI_CH;
498
499 }
500
501 /* make sure we preserve INI settings */
502 phymode |= REG_READ(ah, AR_PHY_GEN_CTRL);
503 /* turn off Green Field detection for STA for now */
504 phymode &= ~AR_PHY_GC_GF_DETECT_EN;
505
506 REG_WRITE(ah, AR_PHY_GEN_CTRL, phymode);
507
508 /* Configure MAC for 20/40 operation */
509 ath9k_hw_set11nmac2040(ah);
510
511 /* global transmit timeout (25 TUs default)*/
512 REG_WRITE(ah, AR_GTXTO, 25 << AR_GTXTO_TIMEOUT_LIMIT_S);
513 /* carrier sense timeout */
514 REG_WRITE(ah, AR_CST, 0xF << AR_CST_TIMEOUT_LIMIT_S);
515 }
516
517 static void ar9003_hw_init_bb(struct ath_hw *ah,
518 struct ath9k_channel *chan)
519 {
520 u32 synthDelay;
521
522 /*
523 * Wait for the frequency synth to settle (synth goes on
524 * via AR_PHY_ACTIVE_EN). Read the phy active delay register.
525 * Value is in 100ns increments.
526 */
527 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
528 if (IS_CHAN_B(chan))
529 synthDelay = (4 * synthDelay) / 22;
530 else
531 synthDelay /= 10;
532
533 /* Activate the PHY (includes baseband activate + synthesizer on) */
534 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
535
536 /*
537 * There is an issue if the AP starts the calibration before
538 * the base band timeout completes. This could result in the
539 * rx_clear false triggering. As a workaround we add delay an
540 * extra BASE_ACTIVATE_DELAY usecs to ensure this condition
541 * does not happen.
542 */
543 udelay(synthDelay + BASE_ACTIVATE_DELAY);
544 }
545
546 static void ar9003_hw_set_chain_masks(struct ath_hw *ah, u8 rx, u8 tx)
547 {
548 switch (rx) {
549 case 0x5:
550 REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
551 AR_PHY_SWAP_ALT_CHAIN);
552 case 0x3:
553 case 0x1:
554 case 0x2:
555 case 0x7:
556 REG_WRITE(ah, AR_PHY_RX_CHAINMASK, rx);
557 REG_WRITE(ah, AR_PHY_CAL_CHAINMASK, rx);
558 break;
559 default:
560 break;
561 }
562
563 if ((ah->caps.hw_caps & ATH9K_HW_CAP_APM) && (tx == 0x7))
564 REG_WRITE(ah, AR_SELFGEN_MASK, 0x3);
565 else if (AR_SREV_9462(ah))
566 /* xxx only when MCI support is enabled */
567 REG_WRITE(ah, AR_SELFGEN_MASK, 0x3);
568 else
569 REG_WRITE(ah, AR_SELFGEN_MASK, tx);
570
571 if (tx == 0x5) {
572 REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
573 AR_PHY_SWAP_ALT_CHAIN);
574 }
575 }
576
577 /*
578 * Override INI values with chip specific configuration.
579 */
580 static void ar9003_hw_override_ini(struct ath_hw *ah)
581 {
582 u32 val;
583
584 /*
585 * Set the RX_ABORT and RX_DIS and clear it only after
586 * RXE is set for MAC. This prevents frames with
587 * corrupted descriptor status.
588 */
589 REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
590
591 /*
592 * For AR9280 and above, there is a new feature that allows
593 * Multicast search based on both MAC Address and Key ID. By default,
594 * this feature is enabled. But since the driver is not using this
595 * feature, we switch it off; otherwise multicast search based on
596 * MAC addr only will fail.
597 */
598 val = REG_READ(ah, AR_PCU_MISC_MODE2) & (~AR_ADHOC_MCAST_KEYID_ENABLE);
599 REG_WRITE(ah, AR_PCU_MISC_MODE2,
600 val | AR_AGG_WEP_ENABLE_FIX | AR_AGG_WEP_ENABLE);
601
602 REG_SET_BIT(ah, AR_PHY_CCK_DETECT,
603 AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
604 }
605
606 static void ar9003_hw_prog_ini(struct ath_hw *ah,
607 struct ar5416IniArray *iniArr,
608 int column)
609 {
610 unsigned int i, regWrites = 0;
611
612 /* New INI format: Array may be undefined (pre, core, post arrays) */
613 if (!iniArr->ia_array)
614 return;
615
616 /*
617 * New INI format: Pre, core, and post arrays for a given subsystem
618 * may be modal (> 2 columns) or non-modal (2 columns). Determine if
619 * the array is non-modal and force the column to 1.
620 */
621 if (column >= iniArr->ia_columns)
622 column = 1;
623
624 for (i = 0; i < iniArr->ia_rows; i++) {
625 u32 reg = INI_RA(iniArr, i, 0);
626 u32 val = INI_RA(iniArr, i, column);
627
628 REG_WRITE(ah, reg, val);
629
630 DO_DELAY(regWrites);
631 }
632 }
633
634 static int ar9003_hw_process_ini(struct ath_hw *ah,
635 struct ath9k_channel *chan)
636 {
637 unsigned int regWrites = 0, i;
638 u32 modesIndex;
639
640 switch (chan->chanmode) {
641 case CHANNEL_A:
642 case CHANNEL_A_HT20:
643 modesIndex = 1;
644 break;
645 case CHANNEL_A_HT40PLUS:
646 case CHANNEL_A_HT40MINUS:
647 modesIndex = 2;
648 break;
649 case CHANNEL_G:
650 case CHANNEL_G_HT20:
651 case CHANNEL_B:
652 modesIndex = 4;
653 break;
654 case CHANNEL_G_HT40PLUS:
655 case CHANNEL_G_HT40MINUS:
656 modesIndex = 3;
657 break;
658
659 default:
660 return -EINVAL;
661 }
662
663 for (i = 0; i < ATH_INI_NUM_SPLIT; i++) {
664 ar9003_hw_prog_ini(ah, &ah->iniSOC[i], modesIndex);
665 ar9003_hw_prog_ini(ah, &ah->iniMac[i], modesIndex);
666 ar9003_hw_prog_ini(ah, &ah->iniBB[i], modesIndex);
667 ar9003_hw_prog_ini(ah, &ah->iniRadio[i], modesIndex);
668 if (i == ATH_INI_POST && AR_SREV_9462_20(ah))
669 ar9003_hw_prog_ini(ah,
670 &ah->ini_radio_post_sys2ant,
671 modesIndex);
672 }
673
674 REG_WRITE_ARRAY(&ah->iniModesRxGain, 1, regWrites);
675 REG_WRITE_ARRAY(&ah->iniModesTxGain, modesIndex, regWrites);
676
677 /*
678 * For 5GHz channels requiring Fast Clock, apply
679 * different modal values.
680 */
681 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
682 REG_WRITE_ARRAY(&ah->iniModesAdditional,
683 modesIndex, regWrites);
684
685 if (AR_SREV_9330(ah))
686 REG_WRITE_ARRAY(&ah->iniModesAdditional, 1, regWrites);
687
688 if (AR_SREV_9340(ah) && !ah->is_clk_25mhz)
689 REG_WRITE_ARRAY(&ah->iniModesAdditional_40M, 1, regWrites);
690
691 if (AR_SREV_9462(ah))
692 ar9003_hw_prog_ini(ah, &ah->ini_BTCOEX_MAX_TXPWR, 1);
693
694 ah->modes_index = modesIndex;
695 ar9003_hw_override_ini(ah);
696 ar9003_hw_set_channel_regs(ah, chan);
697 ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
698 ath9k_hw_apply_txpower(ah, chan);
699
700 if (AR_SREV_9462(ah)) {
701 if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0,
702 AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL))
703 ah->enabled_cals |= TX_IQ_CAL;
704 else
705 ah->enabled_cals &= ~TX_IQ_CAL;
706
707 if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE)
708 ah->enabled_cals |= TX_CL_CAL;
709 else
710 ah->enabled_cals &= ~TX_CL_CAL;
711 }
712
713 return 0;
714 }
715
716 static void ar9003_hw_set_rfmode(struct ath_hw *ah,
717 struct ath9k_channel *chan)
718 {
719 u32 rfMode = 0;
720
721 if (chan == NULL)
722 return;
723
724 rfMode |= (IS_CHAN_B(chan) || IS_CHAN_G(chan))
725 ? AR_PHY_MODE_DYNAMIC : AR_PHY_MODE_OFDM;
726
727 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
728 rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE);
729
730 REG_WRITE(ah, AR_PHY_MODE, rfMode);
731 }
732
733 static void ar9003_hw_mark_phy_inactive(struct ath_hw *ah)
734 {
735 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
736 }
737
738 static void ar9003_hw_set_delta_slope(struct ath_hw *ah,
739 struct ath9k_channel *chan)
740 {
741 u32 coef_scaled, ds_coef_exp, ds_coef_man;
742 u32 clockMhzScaled = 0x64000000;
743 struct chan_centers centers;
744
745 /*
746 * half and quarter rate can divide the scaled clock by 2 or 4
747 * scale for selected channel bandwidth
748 */
749 if (IS_CHAN_HALF_RATE(chan))
750 clockMhzScaled = clockMhzScaled >> 1;
751 else if (IS_CHAN_QUARTER_RATE(chan))
752 clockMhzScaled = clockMhzScaled >> 2;
753
754 /*
755 * ALGO -> coef = 1e8/fcarrier*fclock/40;
756 * scaled coef to provide precision for this floating calculation
757 */
758 ath9k_hw_get_channel_centers(ah, chan, &centers);
759 coef_scaled = clockMhzScaled / centers.synth_center;
760
761 ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
762 &ds_coef_exp);
763
764 REG_RMW_FIELD(ah, AR_PHY_TIMING3,
765 AR_PHY_TIMING3_DSC_MAN, ds_coef_man);
766 REG_RMW_FIELD(ah, AR_PHY_TIMING3,
767 AR_PHY_TIMING3_DSC_EXP, ds_coef_exp);
768
769 /*
770 * For Short GI,
771 * scaled coeff is 9/10 that of normal coeff
772 */
773 coef_scaled = (9 * coef_scaled) / 10;
774
775 ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
776 &ds_coef_exp);
777
778 /* for short gi */
779 REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
780 AR_PHY_SGI_DSC_MAN, ds_coef_man);
781 REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
782 AR_PHY_SGI_DSC_EXP, ds_coef_exp);
783 }
784
785 static bool ar9003_hw_rfbus_req(struct ath_hw *ah)
786 {
787 REG_WRITE(ah, AR_PHY_RFBUS_REQ, AR_PHY_RFBUS_REQ_EN);
788 return ath9k_hw_wait(ah, AR_PHY_RFBUS_GRANT, AR_PHY_RFBUS_GRANT_EN,
789 AR_PHY_RFBUS_GRANT_EN, AH_WAIT_TIMEOUT);
790 }
791
792 /*
793 * Wait for the frequency synth to settle (synth goes on via PHY_ACTIVE_EN).
794 * Read the phy active delay register. Value is in 100ns increments.
795 */
796 static void ar9003_hw_rfbus_done(struct ath_hw *ah)
797 {
798 u32 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
799 if (IS_CHAN_B(ah->curchan))
800 synthDelay = (4 * synthDelay) / 22;
801 else
802 synthDelay /= 10;
803
804 udelay(synthDelay + BASE_ACTIVATE_DELAY);
805
806 REG_WRITE(ah, AR_PHY_RFBUS_REQ, 0);
807 }
808
809 static bool ar9003_hw_ani_control(struct ath_hw *ah,
810 enum ath9k_ani_cmd cmd, int param)
811 {
812 struct ath_common *common = ath9k_hw_common(ah);
813 struct ath9k_channel *chan = ah->curchan;
814 struct ar5416AniState *aniState = &chan->ani;
815 s32 value, value2;
816
817 switch (cmd & ah->ani_function) {
818 case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
819 /*
820 * on == 1 means ofdm weak signal detection is ON
821 * on == 1 is the default, for less noise immunity
822 *
823 * on == 0 means ofdm weak signal detection is OFF
824 * on == 0 means more noise imm
825 */
826 u32 on = param ? 1 : 0;
827 /*
828 * make register setting for default
829 * (weak sig detect ON) come from INI file
830 */
831 int m1ThreshLow = on ?
832 aniState->iniDef.m1ThreshLow : m1ThreshLow_off;
833 int m2ThreshLow = on ?
834 aniState->iniDef.m2ThreshLow : m2ThreshLow_off;
835 int m1Thresh = on ?
836 aniState->iniDef.m1Thresh : m1Thresh_off;
837 int m2Thresh = on ?
838 aniState->iniDef.m2Thresh : m2Thresh_off;
839 int m2CountThr = on ?
840 aniState->iniDef.m2CountThr : m2CountThr_off;
841 int m2CountThrLow = on ?
842 aniState->iniDef.m2CountThrLow : m2CountThrLow_off;
843 int m1ThreshLowExt = on ?
844 aniState->iniDef.m1ThreshLowExt : m1ThreshLowExt_off;
845 int m2ThreshLowExt = on ?
846 aniState->iniDef.m2ThreshLowExt : m2ThreshLowExt_off;
847 int m1ThreshExt = on ?
848 aniState->iniDef.m1ThreshExt : m1ThreshExt_off;
849 int m2ThreshExt = on ?
850 aniState->iniDef.m2ThreshExt : m2ThreshExt_off;
851
852 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
853 AR_PHY_SFCORR_LOW_M1_THRESH_LOW,
854 m1ThreshLow);
855 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
856 AR_PHY_SFCORR_LOW_M2_THRESH_LOW,
857 m2ThreshLow);
858 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
859 AR_PHY_SFCORR_M1_THRESH, m1Thresh);
860 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
861 AR_PHY_SFCORR_M2_THRESH, m2Thresh);
862 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
863 AR_PHY_SFCORR_M2COUNT_THR, m2CountThr);
864 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
865 AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW,
866 m2CountThrLow);
867
868 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
869 AR_PHY_SFCORR_EXT_M1_THRESH_LOW, m1ThreshLowExt);
870 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
871 AR_PHY_SFCORR_EXT_M2_THRESH_LOW, m2ThreshLowExt);
872 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
873 AR_PHY_SFCORR_EXT_M1_THRESH, m1ThreshExt);
874 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
875 AR_PHY_SFCORR_EXT_M2_THRESH, m2ThreshExt);
876
877 if (on)
878 REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
879 AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
880 else
881 REG_CLR_BIT(ah, AR_PHY_SFCORR_LOW,
882 AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
883
884 if (!on != aniState->ofdmWeakSigDetectOff) {
885 ath_dbg(common, ANI,
886 "** ch %d: ofdm weak signal: %s=>%s\n",
887 chan->channel,
888 !aniState->ofdmWeakSigDetectOff ?
889 "on" : "off",
890 on ? "on" : "off");
891 if (on)
892 ah->stats.ast_ani_ofdmon++;
893 else
894 ah->stats.ast_ani_ofdmoff++;
895 aniState->ofdmWeakSigDetectOff = !on;
896 }
897 break;
898 }
899 case ATH9K_ANI_FIRSTEP_LEVEL:{
900 u32 level = param;
901
902 if (level >= ARRAY_SIZE(firstep_table)) {
903 ath_dbg(common, ANI,
904 "ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n",
905 level, ARRAY_SIZE(firstep_table));
906 return false;
907 }
908
909 /*
910 * make register setting relative to default
911 * from INI file & cap value
912 */
913 value = firstep_table[level] -
914 firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
915 aniState->iniDef.firstep;
916 if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN)
917 value = ATH9K_SIG_FIRSTEP_SETTING_MIN;
918 if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX)
919 value = ATH9K_SIG_FIRSTEP_SETTING_MAX;
920 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
921 AR_PHY_FIND_SIG_FIRSTEP,
922 value);
923 /*
924 * we need to set first step low register too
925 * make register setting relative to default
926 * from INI file & cap value
927 */
928 value2 = firstep_table[level] -
929 firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
930 aniState->iniDef.firstepLow;
931 if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN)
932 value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN;
933 if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX)
934 value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX;
935
936 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
937 AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW, value2);
938
939 if (level != aniState->firstepLevel) {
940 ath_dbg(common, ANI,
941 "** ch %d: level %d=>%d[def:%d] firstep[level]=%d ini=%d\n",
942 chan->channel,
943 aniState->firstepLevel,
944 level,
945 ATH9K_ANI_FIRSTEP_LVL_NEW,
946 value,
947 aniState->iniDef.firstep);
948 ath_dbg(common, ANI,
949 "** ch %d: level %d=>%d[def:%d] firstep_low[level]=%d ini=%d\n",
950 chan->channel,
951 aniState->firstepLevel,
952 level,
953 ATH9K_ANI_FIRSTEP_LVL_NEW,
954 value2,
955 aniState->iniDef.firstepLow);
956 if (level > aniState->firstepLevel)
957 ah->stats.ast_ani_stepup++;
958 else if (level < aniState->firstepLevel)
959 ah->stats.ast_ani_stepdown++;
960 aniState->firstepLevel = level;
961 }
962 break;
963 }
964 case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
965 u32 level = param;
966
967 if (level >= ARRAY_SIZE(cycpwrThr1_table)) {
968 ath_dbg(common, ANI,
969 "ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n",
970 level, ARRAY_SIZE(cycpwrThr1_table));
971 return false;
972 }
973 /*
974 * make register setting relative to default
975 * from INI file & cap value
976 */
977 value = cycpwrThr1_table[level] -
978 cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
979 aniState->iniDef.cycpwrThr1;
980 if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
981 value = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
982 if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
983 value = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
984 REG_RMW_FIELD(ah, AR_PHY_TIMING5,
985 AR_PHY_TIMING5_CYCPWR_THR1,
986 value);
987
988 /*
989 * set AR_PHY_EXT_CCA for extension channel
990 * make register setting relative to default
991 * from INI file & cap value
992 */
993 value2 = cycpwrThr1_table[level] -
994 cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
995 aniState->iniDef.cycpwrThr1Ext;
996 if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
997 value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
998 if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
999 value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
1000 REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
1001 AR_PHY_EXT_CYCPWR_THR1, value2);
1002
1003 if (level != aniState->spurImmunityLevel) {
1004 ath_dbg(common, ANI,
1005 "** ch %d: level %d=>%d[def:%d] cycpwrThr1[level]=%d ini=%d\n",
1006 chan->channel,
1007 aniState->spurImmunityLevel,
1008 level,
1009 ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
1010 value,
1011 aniState->iniDef.cycpwrThr1);
1012 ath_dbg(common, ANI,
1013 "** ch %d: level %d=>%d[def:%d] cycpwrThr1Ext[level]=%d ini=%d\n",
1014 chan->channel,
1015 aniState->spurImmunityLevel,
1016 level,
1017 ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
1018 value2,
1019 aniState->iniDef.cycpwrThr1Ext);
1020 if (level > aniState->spurImmunityLevel)
1021 ah->stats.ast_ani_spurup++;
1022 else if (level < aniState->spurImmunityLevel)
1023 ah->stats.ast_ani_spurdown++;
1024 aniState->spurImmunityLevel = level;
1025 }
1026 break;
1027 }
1028 case ATH9K_ANI_MRC_CCK:{
1029 /*
1030 * is_on == 1 means MRC CCK ON (default, less noise imm)
1031 * is_on == 0 means MRC CCK is OFF (more noise imm)
1032 */
1033 bool is_on = param ? 1 : 0;
1034 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1035 AR_PHY_MRC_CCK_ENABLE, is_on);
1036 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1037 AR_PHY_MRC_CCK_MUX_REG, is_on);
1038 if (!is_on != aniState->mrcCCKOff) {
1039 ath_dbg(common, ANI, "** ch %d: MRC CCK: %s=>%s\n",
1040 chan->channel,
1041 !aniState->mrcCCKOff ? "on" : "off",
1042 is_on ? "on" : "off");
1043 if (is_on)
1044 ah->stats.ast_ani_ccklow++;
1045 else
1046 ah->stats.ast_ani_cckhigh++;
1047 aniState->mrcCCKOff = !is_on;
1048 }
1049 break;
1050 }
1051 case ATH9K_ANI_PRESENT:
1052 break;
1053 default:
1054 ath_dbg(common, ANI, "invalid cmd %u\n", cmd);
1055 return false;
1056 }
1057
1058 ath_dbg(common, ANI,
1059 "ANI parameters: SI=%d, ofdmWS=%s FS=%d MRCcck=%s listenTime=%d ofdmErrs=%d cckErrs=%d\n",
1060 aniState->spurImmunityLevel,
1061 !aniState->ofdmWeakSigDetectOff ? "on" : "off",
1062 aniState->firstepLevel,
1063 !aniState->mrcCCKOff ? "on" : "off",
1064 aniState->listenTime,
1065 aniState->ofdmPhyErrCount,
1066 aniState->cckPhyErrCount);
1067 return true;
1068 }
1069
1070 static void ar9003_hw_do_getnf(struct ath_hw *ah,
1071 int16_t nfarray[NUM_NF_READINGS])
1072 {
1073 #define AR_PHY_CH_MINCCA_PWR 0x1FF00000
1074 #define AR_PHY_CH_MINCCA_PWR_S 20
1075 #define AR_PHY_CH_EXT_MINCCA_PWR 0x01FF0000
1076 #define AR_PHY_CH_EXT_MINCCA_PWR_S 16
1077
1078 int16_t nf;
1079 int i;
1080
1081 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1082 if (ah->rxchainmask & BIT(i)) {
1083 nf = MS(REG_READ(ah, ah->nf_regs[i]),
1084 AR_PHY_CH_MINCCA_PWR);
1085 nfarray[i] = sign_extend32(nf, 8);
1086
1087 if (IS_CHAN_HT40(ah->curchan)) {
1088 u8 ext_idx = AR9300_MAX_CHAINS + i;
1089
1090 nf = MS(REG_READ(ah, ah->nf_regs[ext_idx]),
1091 AR_PHY_CH_EXT_MINCCA_PWR);
1092 nfarray[ext_idx] = sign_extend32(nf, 8);
1093 }
1094 }
1095 }
1096 }
1097
1098 static void ar9003_hw_set_nf_limits(struct ath_hw *ah)
1099 {
1100 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ;
1101 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_2GHZ;
1102 if (AR_SREV_9330(ah))
1103 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9330_2GHZ;
1104 else
1105 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9300_2GHZ;
1106 ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_5GHZ;
1107 ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_5GHZ;
1108 ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9300_5GHZ;
1109 }
1110
1111 /*
1112 * Initialize the ANI register values with default (ini) values.
1113 * This routine is called during a (full) hardware reset after
1114 * all the registers are initialised from the INI.
1115 */
1116 static void ar9003_hw_ani_cache_ini_regs(struct ath_hw *ah)
1117 {
1118 struct ar5416AniState *aniState;
1119 struct ath_common *common = ath9k_hw_common(ah);
1120 struct ath9k_channel *chan = ah->curchan;
1121 struct ath9k_ani_default *iniDef;
1122 u32 val;
1123
1124 aniState = &ah->curchan->ani;
1125 iniDef = &aniState->iniDef;
1126
1127 ath_dbg(common, ANI, "ver %d.%d opmode %u chan %d Mhz/0x%x\n",
1128 ah->hw_version.macVersion,
1129 ah->hw_version.macRev,
1130 ah->opmode,
1131 chan->channel,
1132 chan->channelFlags);
1133
1134 val = REG_READ(ah, AR_PHY_SFCORR);
1135 iniDef->m1Thresh = MS(val, AR_PHY_SFCORR_M1_THRESH);
1136 iniDef->m2Thresh = MS(val, AR_PHY_SFCORR_M2_THRESH);
1137 iniDef->m2CountThr = MS(val, AR_PHY_SFCORR_M2COUNT_THR);
1138
1139 val = REG_READ(ah, AR_PHY_SFCORR_LOW);
1140 iniDef->m1ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M1_THRESH_LOW);
1141 iniDef->m2ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M2_THRESH_LOW);
1142 iniDef->m2CountThrLow = MS(val, AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW);
1143
1144 val = REG_READ(ah, AR_PHY_SFCORR_EXT);
1145 iniDef->m1ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH);
1146 iniDef->m2ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH);
1147 iniDef->m1ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH_LOW);
1148 iniDef->m2ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH_LOW);
1149 iniDef->firstep = REG_READ_FIELD(ah,
1150 AR_PHY_FIND_SIG,
1151 AR_PHY_FIND_SIG_FIRSTEP);
1152 iniDef->firstepLow = REG_READ_FIELD(ah,
1153 AR_PHY_FIND_SIG_LOW,
1154 AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW);
1155 iniDef->cycpwrThr1 = REG_READ_FIELD(ah,
1156 AR_PHY_TIMING5,
1157 AR_PHY_TIMING5_CYCPWR_THR1);
1158 iniDef->cycpwrThr1Ext = REG_READ_FIELD(ah,
1159 AR_PHY_EXT_CCA,
1160 AR_PHY_EXT_CYCPWR_THR1);
1161
1162 /* these levels just got reset to defaults by the INI */
1163 aniState->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL_NEW;
1164 aniState->firstepLevel = ATH9K_ANI_FIRSTEP_LVL_NEW;
1165 aniState->ofdmWeakSigDetectOff = !ATH9K_ANI_USE_OFDM_WEAK_SIG;
1166 aniState->mrcCCKOff = !ATH9K_ANI_ENABLE_MRC_CCK;
1167 }
1168
1169 static void ar9003_hw_set_radar_params(struct ath_hw *ah,
1170 struct ath_hw_radar_conf *conf)
1171 {
1172 u32 radar_0 = 0, radar_1 = 0;
1173
1174 if (!conf) {
1175 REG_CLR_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_ENA);
1176 return;
1177 }
1178
1179 radar_0 |= AR_PHY_RADAR_0_ENA | AR_PHY_RADAR_0_FFT_ENA;
1180 radar_0 |= SM(conf->fir_power, AR_PHY_RADAR_0_FIRPWR);
1181 radar_0 |= SM(conf->radar_rssi, AR_PHY_RADAR_0_RRSSI);
1182 radar_0 |= SM(conf->pulse_height, AR_PHY_RADAR_0_HEIGHT);
1183 radar_0 |= SM(conf->pulse_rssi, AR_PHY_RADAR_0_PRSSI);
1184 radar_0 |= SM(conf->pulse_inband, AR_PHY_RADAR_0_INBAND);
1185
1186 radar_1 |= AR_PHY_RADAR_1_MAX_RRSSI;
1187 radar_1 |= AR_PHY_RADAR_1_BLOCK_CHECK;
1188 radar_1 |= SM(conf->pulse_maxlen, AR_PHY_RADAR_1_MAXLEN);
1189 radar_1 |= SM(conf->pulse_inband_step, AR_PHY_RADAR_1_RELSTEP_THRESH);
1190 radar_1 |= SM(conf->radar_inband, AR_PHY_RADAR_1_RELPWR_THRESH);
1191
1192 REG_WRITE(ah, AR_PHY_RADAR_0, radar_0);
1193 REG_WRITE(ah, AR_PHY_RADAR_1, radar_1);
1194 if (conf->ext_channel)
1195 REG_SET_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1196 else
1197 REG_CLR_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1198 }
1199
1200 static void ar9003_hw_set_radar_conf(struct ath_hw *ah)
1201 {
1202 struct ath_hw_radar_conf *conf = &ah->radar_conf;
1203
1204 conf->fir_power = -28;
1205 conf->radar_rssi = 0;
1206 conf->pulse_height = 10;
1207 conf->pulse_rssi = 24;
1208 conf->pulse_inband = 8;
1209 conf->pulse_maxlen = 255;
1210 conf->pulse_inband_step = 12;
1211 conf->radar_inband = 8;
1212 }
1213
1214 static void ar9003_hw_antdiv_comb_conf_get(struct ath_hw *ah,
1215 struct ath_hw_antcomb_conf *antconf)
1216 {
1217 u32 regval;
1218
1219 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1220 antconf->main_lna_conf = (regval & AR_PHY_9485_ANT_DIV_MAIN_LNACONF) >>
1221 AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S;
1222 antconf->alt_lna_conf = (regval & AR_PHY_9485_ANT_DIV_ALT_LNACONF) >>
1223 AR_PHY_9485_ANT_DIV_ALT_LNACONF_S;
1224 antconf->fast_div_bias = (regval & AR_PHY_9485_ANT_FAST_DIV_BIAS) >>
1225 AR_PHY_9485_ANT_FAST_DIV_BIAS_S;
1226
1227 if (AR_SREV_9330_11(ah)) {
1228 antconf->lna1_lna2_delta = -9;
1229 antconf->div_group = 1;
1230 } else if (AR_SREV_9485(ah)) {
1231 antconf->lna1_lna2_delta = -9;
1232 antconf->div_group = 2;
1233 } else {
1234 antconf->lna1_lna2_delta = -3;
1235 antconf->div_group = 0;
1236 }
1237 }
1238
1239 static void ar9003_hw_antdiv_comb_conf_set(struct ath_hw *ah,
1240 struct ath_hw_antcomb_conf *antconf)
1241 {
1242 u32 regval;
1243
1244 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1245 regval &= ~(AR_PHY_9485_ANT_DIV_MAIN_LNACONF |
1246 AR_PHY_9485_ANT_DIV_ALT_LNACONF |
1247 AR_PHY_9485_ANT_FAST_DIV_BIAS |
1248 AR_PHY_9485_ANT_DIV_MAIN_GAINTB |
1249 AR_PHY_9485_ANT_DIV_ALT_GAINTB);
1250 regval |= ((antconf->main_lna_conf <<
1251 AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S)
1252 & AR_PHY_9485_ANT_DIV_MAIN_LNACONF);
1253 regval |= ((antconf->alt_lna_conf << AR_PHY_9485_ANT_DIV_ALT_LNACONF_S)
1254 & AR_PHY_9485_ANT_DIV_ALT_LNACONF);
1255 regval |= ((antconf->fast_div_bias << AR_PHY_9485_ANT_FAST_DIV_BIAS_S)
1256 & AR_PHY_9485_ANT_FAST_DIV_BIAS);
1257 regval |= ((antconf->main_gaintb << AR_PHY_9485_ANT_DIV_MAIN_GAINTB_S)
1258 & AR_PHY_9485_ANT_DIV_MAIN_GAINTB);
1259 regval |= ((antconf->alt_gaintb << AR_PHY_9485_ANT_DIV_ALT_GAINTB_S)
1260 & AR_PHY_9485_ANT_DIV_ALT_GAINTB);
1261
1262 REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1263 }
1264
1265 static int ar9003_hw_fast_chan_change(struct ath_hw *ah,
1266 struct ath9k_channel *chan,
1267 u8 *ini_reloaded)
1268 {
1269 unsigned int regWrites = 0;
1270 u32 modesIndex;
1271
1272 switch (chan->chanmode) {
1273 case CHANNEL_A:
1274 case CHANNEL_A_HT20:
1275 modesIndex = 1;
1276 break;
1277 case CHANNEL_A_HT40PLUS:
1278 case CHANNEL_A_HT40MINUS:
1279 modesIndex = 2;
1280 break;
1281 case CHANNEL_G:
1282 case CHANNEL_G_HT20:
1283 case CHANNEL_B:
1284 modesIndex = 4;
1285 break;
1286 case CHANNEL_G_HT40PLUS:
1287 case CHANNEL_G_HT40MINUS:
1288 modesIndex = 3;
1289 break;
1290
1291 default:
1292 return -EINVAL;
1293 }
1294
1295 if (modesIndex == ah->modes_index) {
1296 *ini_reloaded = false;
1297 goto set_rfmode;
1298 }
1299
1300 ar9003_hw_prog_ini(ah, &ah->iniSOC[ATH_INI_POST], modesIndex);
1301 ar9003_hw_prog_ini(ah, &ah->iniMac[ATH_INI_POST], modesIndex);
1302 ar9003_hw_prog_ini(ah, &ah->iniBB[ATH_INI_POST], modesIndex);
1303 ar9003_hw_prog_ini(ah, &ah->iniRadio[ATH_INI_POST], modesIndex);
1304 if (AR_SREV_9462_20(ah))
1305 ar9003_hw_prog_ini(ah,
1306 &ah->ini_radio_post_sys2ant,
1307 modesIndex);
1308
1309 REG_WRITE_ARRAY(&ah->iniModesTxGain, modesIndex, regWrites);
1310
1311 /*
1312 * For 5GHz channels requiring Fast Clock, apply
1313 * different modal values.
1314 */
1315 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1316 REG_WRITE_ARRAY(&ah->iniModesAdditional, modesIndex, regWrites);
1317
1318 if (AR_SREV_9330(ah))
1319 REG_WRITE_ARRAY(&ah->iniModesAdditional, 1, regWrites);
1320
1321 if (AR_SREV_9340(ah) && !ah->is_clk_25mhz)
1322 REG_WRITE_ARRAY(&ah->iniModesAdditional_40M, 1, regWrites);
1323
1324 ah->modes_index = modesIndex;
1325 *ini_reloaded = true;
1326
1327 set_rfmode:
1328 ar9003_hw_set_rfmode(ah, chan);
1329 return 0;
1330 }
1331
1332 void ar9003_hw_attach_phy_ops(struct ath_hw *ah)
1333 {
1334 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1335 struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1336 static const u32 ar9300_cca_regs[6] = {
1337 AR_PHY_CCA_0,
1338 AR_PHY_CCA_1,
1339 AR_PHY_CCA_2,
1340 AR_PHY_EXT_CCA,
1341 AR_PHY_EXT_CCA_1,
1342 AR_PHY_EXT_CCA_2,
1343 };
1344
1345 priv_ops->rf_set_freq = ar9003_hw_set_channel;
1346 priv_ops->spur_mitigate_freq = ar9003_hw_spur_mitigate;
1347 priv_ops->compute_pll_control = ar9003_hw_compute_pll_control;
1348 priv_ops->set_channel_regs = ar9003_hw_set_channel_regs;
1349 priv_ops->init_bb = ar9003_hw_init_bb;
1350 priv_ops->process_ini = ar9003_hw_process_ini;
1351 priv_ops->set_rfmode = ar9003_hw_set_rfmode;
1352 priv_ops->mark_phy_inactive = ar9003_hw_mark_phy_inactive;
1353 priv_ops->set_delta_slope = ar9003_hw_set_delta_slope;
1354 priv_ops->rfbus_req = ar9003_hw_rfbus_req;
1355 priv_ops->rfbus_done = ar9003_hw_rfbus_done;
1356 priv_ops->ani_control = ar9003_hw_ani_control;
1357 priv_ops->do_getnf = ar9003_hw_do_getnf;
1358 priv_ops->ani_cache_ini_regs = ar9003_hw_ani_cache_ini_regs;
1359 priv_ops->set_radar_params = ar9003_hw_set_radar_params;
1360 priv_ops->fast_chan_change = ar9003_hw_fast_chan_change;
1361
1362 ops->antdiv_comb_conf_get = ar9003_hw_antdiv_comb_conf_get;
1363 ops->antdiv_comb_conf_set = ar9003_hw_antdiv_comb_conf_set;
1364
1365 ar9003_hw_set_nf_limits(ah);
1366 ar9003_hw_set_radar_conf(ah);
1367 memcpy(ah->nf_regs, ar9300_cca_regs, sizeof(ah->nf_regs));
1368 }
1369
1370 void ar9003_hw_bb_watchdog_config(struct ath_hw *ah)
1371 {
1372 struct ath_common *common = ath9k_hw_common(ah);
1373 u32 idle_tmo_ms = ah->bb_watchdog_timeout_ms;
1374 u32 val, idle_count;
1375
1376 if (!idle_tmo_ms) {
1377 /* disable IRQ, disable chip-reset for BB panic */
1378 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
1379 REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) &
1380 ~(AR_PHY_WATCHDOG_RST_ENABLE |
1381 AR_PHY_WATCHDOG_IRQ_ENABLE));
1382
1383 /* disable watchdog in non-IDLE mode, disable in IDLE mode */
1384 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
1385 REG_READ(ah, AR_PHY_WATCHDOG_CTL_1) &
1386 ~(AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
1387 AR_PHY_WATCHDOG_IDLE_ENABLE));
1388
1389 ath_dbg(common, RESET, "Disabled BB Watchdog\n");
1390 return;
1391 }
1392
1393 /* enable IRQ, disable chip-reset for BB watchdog */
1394 val = REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) & AR_PHY_WATCHDOG_CNTL2_MASK;
1395 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
1396 (val | AR_PHY_WATCHDOG_IRQ_ENABLE) &
1397 ~AR_PHY_WATCHDOG_RST_ENABLE);
1398
1399 /* bound limit to 10 secs */
1400 if (idle_tmo_ms > 10000)
1401 idle_tmo_ms = 10000;
1402
1403 /*
1404 * The time unit for watchdog event is 2^15 44/88MHz cycles.
1405 *
1406 * For HT20 we have a time unit of 2^15/44 MHz = .74 ms per tick
1407 * For HT40 we have a time unit of 2^15/88 MHz = .37 ms per tick
1408 *
1409 * Given we use fast clock now in 5 GHz, these time units should
1410 * be common for both 2 GHz and 5 GHz.
1411 */
1412 idle_count = (100 * idle_tmo_ms) / 74;
1413 if (ah->curchan && IS_CHAN_HT40(ah->curchan))
1414 idle_count = (100 * idle_tmo_ms) / 37;
1415
1416 /*
1417 * enable watchdog in non-IDLE mode, disable in IDLE mode,
1418 * set idle time-out.
1419 */
1420 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
1421 AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
1422 AR_PHY_WATCHDOG_IDLE_MASK |
1423 (AR_PHY_WATCHDOG_NON_IDLE_MASK & (idle_count << 2)));
1424
1425 ath_dbg(common, RESET, "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, RESET,
1455 "\n==== BB update: BB status=0x%08x ====\n", status);
1456 ath_dbg(common, 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, RESET, "** BB WD cntl: cntl1=0x%08x cntl2=0x%08x **\n",
1469 REG_READ(ah, AR_PHY_WATCHDOG_CTL_1),
1470 REG_READ(ah, AR_PHY_WATCHDOG_CTL_2));
1471 ath_dbg(common, RESET, "** BB mode: BB_gen_controls=0x%08x **\n",
1472 REG_READ(ah, AR_PHY_GEN_CTRL));
1473
1474 #define PCT(_field) (common->cc_survey._field * 100 / common->cc_survey.cycles)
1475 if (common->cc_survey.cycles)
1476 ath_dbg(common, RESET,
1477 "** BB busy times: rx_clear=%d%%, rx_frame=%d%%, tx_frame=%d%% **\n",
1478 PCT(rx_busy), PCT(rx_frame), PCT(tx_frame));
1479
1480 ath_dbg(common, RESET, "==== BB update: done ====\n\n");
1481 }
1482 EXPORT_SYMBOL(ar9003_hw_bb_watchdog_dbg_info);
1483
1484 void ar9003_hw_disable_phy_restart(struct ath_hw *ah)
1485 {
1486 u32 val;
1487
1488 /* While receiving unsupported rate frame rx state machine
1489 * gets into a state 0xb and if phy_restart happens in that
1490 * state, BB would go hang. If RXSM is in 0xb state after
1491 * first bb panic, ensure to disable the phy_restart.
1492 */
1493 if (!((MS(ah->bb_watchdog_last_status,
1494 AR_PHY_WATCHDOG_RX_OFDM_SM) == 0xb) ||
1495 ah->bb_hang_rx_ofdm))
1496 return;
1497
1498 ah->bb_hang_rx_ofdm = true;
1499 val = REG_READ(ah, AR_PHY_RESTART);
1500 val &= ~AR_PHY_RESTART_ENA;
1501
1502 REG_WRITE(ah, AR_PHY_RESTART, val);
1503 }
1504 EXPORT_SYMBOL(ar9003_hw_disable_phy_restart);