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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / ath / ath9k / ar9003_phy.c
blobdaf30f9946b481fc4892c7e3eec198d1eeac2b14
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 #include "ar9003_eeprom.h"
21
22 #define AR9300_OFDM_RATES 8
23 #define AR9300_HT_SS_RATES 8
24 #define AR9300_HT_DS_RATES 8
25 #define AR9300_HT_TS_RATES 8
26
27 #define AR9300_11NA_OFDM_SHIFT 0
28 #define AR9300_11NA_HT_SS_SHIFT 8
29 #define AR9300_11NA_HT_DS_SHIFT 16
30 #define AR9300_11NA_HT_TS_SHIFT 24
31
32 #define AR9300_11NG_OFDM_SHIFT 4
33 #define AR9300_11NG_HT_SS_SHIFT 12
34 #define AR9300_11NG_HT_DS_SHIFT 20
35 #define AR9300_11NG_HT_TS_SHIFT 28
36
37 static const int firstep_table[] =
38 /* level: 0 1 2 3 4 5 6 7 8 */
39 { -4, -2, 0, 2, 4, 6, 8, 10, 12 }; /* lvl 0-8, default 2 */
40
41 static const int cycpwrThr1_table[] =
42 /* level: 0 1 2 3 4 5 6 7 8 */
43 { -6, -4, -2, 0, 2, 4, 6, 8 }; /* lvl 0-7, default 3 */
44
45 /*
46 * register values to turn OFDM weak signal detection OFF
47 */
48 static const int m1ThreshLow_off = 127;
49 static const int m2ThreshLow_off = 127;
50 static const int m1Thresh_off = 127;
51 static const int m2Thresh_off = 127;
52 static const int m2CountThr_off = 31;
53 static const int m2CountThrLow_off = 63;
54 static const int m1ThreshLowExt_off = 127;
55 static const int m2ThreshLowExt_off = 127;
56 static const int m1ThreshExt_off = 127;
57 static const int m2ThreshExt_off = 127;
58
59 static const u8 ofdm2pwr[] = {
60 ALL_TARGET_LEGACY_6_24,
61 ALL_TARGET_LEGACY_6_24,
62 ALL_TARGET_LEGACY_6_24,
63 ALL_TARGET_LEGACY_6_24,
64 ALL_TARGET_LEGACY_6_24,
65 ALL_TARGET_LEGACY_36,
66 ALL_TARGET_LEGACY_48,
67 ALL_TARGET_LEGACY_54
68 };
69
70 static const u8 mcs2pwr_ht20[] = {
71 ALL_TARGET_HT20_0_8_16,
72 ALL_TARGET_HT20_1_3_9_11_17_19,
73 ALL_TARGET_HT20_1_3_9_11_17_19,
74 ALL_TARGET_HT20_1_3_9_11_17_19,
75 ALL_TARGET_HT20_4,
76 ALL_TARGET_HT20_5,
77 ALL_TARGET_HT20_6,
78 ALL_TARGET_HT20_7,
79 ALL_TARGET_HT20_0_8_16,
80 ALL_TARGET_HT20_1_3_9_11_17_19,
81 ALL_TARGET_HT20_1_3_9_11_17_19,
82 ALL_TARGET_HT20_1_3_9_11_17_19,
83 ALL_TARGET_HT20_12,
84 ALL_TARGET_HT20_13,
85 ALL_TARGET_HT20_14,
86 ALL_TARGET_HT20_15,
87 ALL_TARGET_HT20_0_8_16,
88 ALL_TARGET_HT20_1_3_9_11_17_19,
89 ALL_TARGET_HT20_1_3_9_11_17_19,
90 ALL_TARGET_HT20_1_3_9_11_17_19,
91 ALL_TARGET_HT20_20,
92 ALL_TARGET_HT20_21,
93 ALL_TARGET_HT20_22,
94 ALL_TARGET_HT20_23
95 };
96
97 static const u8 mcs2pwr_ht40[] = {
98 ALL_TARGET_HT40_0_8_16,
99 ALL_TARGET_HT40_1_3_9_11_17_19,
100 ALL_TARGET_HT40_1_3_9_11_17_19,
101 ALL_TARGET_HT40_1_3_9_11_17_19,
102 ALL_TARGET_HT40_4,
103 ALL_TARGET_HT40_5,
104 ALL_TARGET_HT40_6,
105 ALL_TARGET_HT40_7,
106 ALL_TARGET_HT40_0_8_16,
107 ALL_TARGET_HT40_1_3_9_11_17_19,
108 ALL_TARGET_HT40_1_3_9_11_17_19,
109 ALL_TARGET_HT40_1_3_9_11_17_19,
110 ALL_TARGET_HT40_12,
111 ALL_TARGET_HT40_13,
112 ALL_TARGET_HT40_14,
113 ALL_TARGET_HT40_15,
114 ALL_TARGET_HT40_0_8_16,
115 ALL_TARGET_HT40_1_3_9_11_17_19,
116 ALL_TARGET_HT40_1_3_9_11_17_19,
117 ALL_TARGET_HT40_1_3_9_11_17_19,
118 ALL_TARGET_HT40_20,
119 ALL_TARGET_HT40_21,
120 ALL_TARGET_HT40_22,
121 ALL_TARGET_HT40_23,
122 };
123
124 /**
125 * ar9003_hw_set_channel - set channel on single-chip device
126 * @ah: atheros hardware structure
127 * @chan:
128 *
129 * This is the function to change channel on single-chip devices, that is
130 * for AR9300 family of chipsets.
131 *
132 * This function takes the channel value in MHz and sets
133 * hardware channel value. Assumes writes have been enabled to analog bus.
134 *
135 * Actual Expression,
136 *
137 * For 2GHz channel,
138 * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
139 * (freq_ref = 40MHz)
140 *
141 * For 5GHz channel,
142 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10)
143 * (freq_ref = 40MHz/(24>>amodeRefSel))
144 *
145 * For 5GHz channels which are 5MHz spaced,
146 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
147 * (freq_ref = 40MHz)
148 */
149 static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
150 {
151 u16 bMode, fracMode = 0, aModeRefSel = 0;
152 u32 freq, chan_frac, div, channelSel = 0, reg32 = 0;
153 struct chan_centers centers;
154 int loadSynthChannel;
155
156 ath9k_hw_get_channel_centers(ah, chan, &centers);
157 freq = centers.synth_center;
158
159 if (freq < 4800) { /* 2 GHz, fractional mode */
160 if (AR_SREV_9330(ah) || AR_SREV_9485(ah) ||
161 AR_SREV_9531(ah) || AR_SREV_9550(ah) ||
162 AR_SREV_9561(ah) || AR_SREV_9565(ah)) {
163 if (ah->is_clk_25mhz)
164 div = 75;
165 else
166 div = 120;
167
168 channelSel = (freq * 4) / div;
169 chan_frac = (((freq * 4) % div) * 0x20000) / div;
170 channelSel = (channelSel << 17) | chan_frac;
171 } else if (AR_SREV_9340(ah)) {
172 if (ah->is_clk_25mhz) {
173 channelSel = (freq * 2) / 75;
174 chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
175 channelSel = (channelSel << 17) | chan_frac;
176 } else {
177 channelSel = CHANSEL_2G(freq) >> 1;
178 }
179 } else {
180 channelSel = CHANSEL_2G(freq);
181 }
182 /* Set to 2G mode */
183 bMode = 1;
184 } else {
185 if ((AR_SREV_9340(ah) || AR_SREV_9550(ah) ||
186 AR_SREV_9531(ah) || AR_SREV_9561(ah)) &&
187 ah->is_clk_25mhz) {
188 channelSel = freq / 75;
189 chan_frac = ((freq % 75) * 0x20000) / 75;
190 channelSel = (channelSel << 17) | chan_frac;
191 } else {
192 channelSel = CHANSEL_5G(freq);
193 /* Doubler is ON, so, divide channelSel by 2. */
194 channelSel >>= 1;
195 }
196 /* Set to 5G mode */
197 bMode = 0;
198 }
199
200 /* Enable fractional mode for all channels */
201 fracMode = 1;
202 aModeRefSel = 0;
203 loadSynthChannel = 0;
204
205 reg32 = (bMode << 29);
206 REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
207
208 /* Enable Long shift Select for Synthesizer */
209 REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_SYNTH4,
210 AR_PHY_SYNTH4_LONG_SHIFT_SELECT, 1);
211
212 /* Program Synth. setting */
213 reg32 = (channelSel << 2) | (fracMode << 30) |
214 (aModeRefSel << 28) | (loadSynthChannel << 31);
215 REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
216
217 /* Toggle Load Synth channel bit */
218 loadSynthChannel = 1;
219 reg32 = (channelSel << 2) | (fracMode << 30) |
220 (aModeRefSel << 28) | (loadSynthChannel << 31);
221 REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
222
223 ah->curchan = chan;
224
225 return 0;
226 }
227
228 /**
229 * ar9003_hw_spur_mitigate_mrc_cck - convert baseband spur frequency
230 * @ah: atheros hardware structure
231 * @chan:
232 *
233 * For single-chip solutions. Converts to baseband spur frequency given the
234 * input channel frequency and compute register settings below.
235 *
236 * Spur mitigation for MRC CCK
237 */
238 static void ar9003_hw_spur_mitigate_mrc_cck(struct ath_hw *ah,
239 struct ath9k_channel *chan)
240 {
241 static const u32 spur_freq[4] = { 2420, 2440, 2464, 2480 };
242 int cur_bb_spur, negative = 0, cck_spur_freq;
243 int i;
244 int range, max_spur_cnts, synth_freq;
245 u8 *spur_fbin_ptr = ar9003_get_spur_chan_ptr(ah, IS_CHAN_2GHZ(chan));
246
247 /*
248 * Need to verify range +/- 10 MHz in control channel, otherwise spur
249 * is out-of-band and can be ignored.
250 */
251
252 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
253 AR_SREV_9550(ah) || AR_SREV_9561(ah)) {
254 if (spur_fbin_ptr[0] == 0) /* No spur */
255 return;
256 max_spur_cnts = 5;
257 if (IS_CHAN_HT40(chan)) {
258 range = 19;
259 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
260 AR_PHY_GC_DYN2040_PRI_CH) == 0)
261 synth_freq = chan->channel + 10;
262 else
263 synth_freq = chan->channel - 10;
264 } else {
265 range = 10;
266 synth_freq = chan->channel;
267 }
268 } else {
269 range = AR_SREV_9462(ah) ? 5 : 10;
270 max_spur_cnts = 4;
271 synth_freq = chan->channel;
272 }
273
274 for (i = 0; i < max_spur_cnts; i++) {
275 if (AR_SREV_9462(ah) && (i == 0 || i == 3))
276 continue;
277
278 negative = 0;
279 if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
280 AR_SREV_9550(ah) || AR_SREV_9561(ah))
281 cur_bb_spur = ath9k_hw_fbin2freq(spur_fbin_ptr[i],
282 IS_CHAN_2GHZ(chan));
283 else
284 cur_bb_spur = spur_freq[i];
285
286 cur_bb_spur -= synth_freq;
287 if (cur_bb_spur < 0) {
288 negative = 1;
289 cur_bb_spur = -cur_bb_spur;
290 }
291 if (cur_bb_spur < range) {
292 cck_spur_freq = (int)((cur_bb_spur << 19) / 11);
293
294 if (negative == 1)
295 cck_spur_freq = -cck_spur_freq;
296
297 cck_spur_freq = cck_spur_freq & 0xfffff;
298
299 REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
300 AR_PHY_AGC_CONTROL_YCOK_MAX, 0x7);
301 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
302 AR_PHY_CCK_SPUR_MIT_SPUR_RSSI_THR, 0x7f);
303 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
304 AR_PHY_CCK_SPUR_MIT_SPUR_FILTER_TYPE,
305 0x2);
306 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
307 AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT,
308 0x1);
309 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
310 AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ,
311 cck_spur_freq);
312
313 return;
314 }
315 }
316
317 REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
318 AR_PHY_AGC_CONTROL_YCOK_MAX, 0x5);
319 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
320 AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT, 0x0);
321 REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
322 AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ, 0x0);
323 }
324
325 /* Clean all spur register fields */
326 static void ar9003_hw_spur_ofdm_clear(struct ath_hw *ah)
327 {
328 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
329 AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0);
330 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
331 AR_PHY_TIMING11_SPUR_FREQ_SD, 0);
332 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
333 AR_PHY_TIMING11_SPUR_DELTA_PHASE, 0);
334 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
335 AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, 0);
336 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
337 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0);
338 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
339 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0);
340 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
341 AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0);
342 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
343 AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 0);
344 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
345 AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 0);
346
347 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
348 AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0);
349 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
350 AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0);
351 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
352 AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0);
353 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
354 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, 0);
355 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
356 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, 0);
357 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
358 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, 0);
359 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
360 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0);
361 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
362 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0);
363 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
364 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0);
365 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
366 AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0);
367 }
368
369 static void ar9003_hw_spur_ofdm(struct ath_hw *ah,
370 int freq_offset,
371 int spur_freq_sd,
372 int spur_delta_phase,
373 int spur_subchannel_sd,
374 int range,
375 int synth_freq)
376 {
377 int mask_index = 0;
378
379 /* OFDM Spur mitigation */
380 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
381 AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0x1);
382 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
383 AR_PHY_TIMING11_SPUR_FREQ_SD, spur_freq_sd);
384 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
385 AR_PHY_TIMING11_SPUR_DELTA_PHASE, spur_delta_phase);
386 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
387 AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, spur_subchannel_sd);
388 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
389 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0x1);
390
391 if (!(AR_SREV_9565(ah) && range == 10 && synth_freq == 2437))
392 REG_RMW_FIELD(ah, AR_PHY_TIMING11,
393 AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0x1);
394
395 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
396 AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0x1);
397 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
398 AR_PHY_SPUR_REG_SPUR_RSSI_THRESH, 34);
399 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
400 AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 1);
401
402 if (!AR_SREV_9340(ah) &&
403 REG_READ_FIELD(ah, AR_PHY_MODE,
404 AR_PHY_MODE_DYNAMIC) == 0x1)
405 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
406 AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 1);
407
408 mask_index = (freq_offset << 4) / 5;
409 if (mask_index < 0)
410 mask_index = mask_index - 1;
411
412 mask_index = mask_index & 0x7f;
413
414 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
415 AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0x1);
416 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
417 AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0x1);
418 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
419 AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0x1);
420 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
421 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, mask_index);
422 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
423 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, mask_index);
424 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
425 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, mask_index);
426 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
427 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0xc);
428 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
429 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0xc);
430 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
431 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0xa0);
432 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
433 AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0xff);
434 }
435
436 static void ar9003_hw_spur_ofdm_9565(struct ath_hw *ah,
437 int freq_offset)
438 {
439 int mask_index = 0;
440
441 mask_index = (freq_offset << 4) / 5;
442 if (mask_index < 0)
443 mask_index = mask_index - 1;
444
445 mask_index = mask_index & 0x7f;
446
447 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
448 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_B,
449 mask_index);
450
451 /* A == B */
452 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_B,
453 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A,
454 mask_index);
455
456 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
457 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_B,
458 mask_index);
459 REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
460 AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_B, 0xe);
461 REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
462 AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_B, 0xe);
463
464 /* A == B */
465 REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_B,
466 AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0xa0);
467 }
468
469 static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
470 struct ath9k_channel *chan,
471 int freq_offset,
472 int range,
473 int synth_freq)
474 {
475 int spur_freq_sd = 0;
476 int spur_subchannel_sd = 0;
477 int spur_delta_phase = 0;
478
479 if (IS_CHAN_HT40(chan)) {
480 if (freq_offset < 0) {
481 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
482 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
483 spur_subchannel_sd = 1;
484 else
485 spur_subchannel_sd = 0;
486
487 spur_freq_sd = ((freq_offset + 10) << 9) / 11;
488
489 } else {
490 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
491 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
492 spur_subchannel_sd = 0;
493 else
494 spur_subchannel_sd = 1;
495
496 spur_freq_sd = ((freq_offset - 10) << 9) / 11;
497
498 }
499
500 spur_delta_phase = (freq_offset << 17) / 5;
501
502 } else {
503 spur_subchannel_sd = 0;
504 spur_freq_sd = (freq_offset << 9) /11;
505 spur_delta_phase = (freq_offset << 18) / 5;
506 }
507
508 spur_freq_sd = spur_freq_sd & 0x3ff;
509 spur_delta_phase = spur_delta_phase & 0xfffff;
510
511 ar9003_hw_spur_ofdm(ah,
512 freq_offset,
513 spur_freq_sd,
514 spur_delta_phase,
515 spur_subchannel_sd,
516 range, synth_freq);
517 }
518
519 /* Spur mitigation for OFDM */
520 static void ar9003_hw_spur_mitigate_ofdm(struct ath_hw *ah,
521 struct ath9k_channel *chan)
522 {
523 int synth_freq;
524 int range = 10;
525 int freq_offset = 0;
526 int mode;
527 u8* spurChansPtr;
528 unsigned int i;
529 struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
530
531 if (IS_CHAN_5GHZ(chan)) {
532 spurChansPtr = &(eep->modalHeader5G.spurChans[0]);
533 mode = 0;
534 }
535 else {
536 spurChansPtr = &(eep->modalHeader2G.spurChans[0]);
537 mode = 1;
538 }
539
540 if (spurChansPtr[0] == 0)
541 return; /* No spur in the mode */
542
543 if (IS_CHAN_HT40(chan)) {
544 range = 19;
545 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
546 AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
547 synth_freq = chan->channel - 10;
548 else
549 synth_freq = chan->channel + 10;
550 } else {
551 range = 10;
552 synth_freq = chan->channel;
553 }
554
555 ar9003_hw_spur_ofdm_clear(ah);
556
557 for (i = 0; i < AR_EEPROM_MODAL_SPURS && spurChansPtr[i]; i++) {
558 freq_offset = ath9k_hw_fbin2freq(spurChansPtr[i], mode);
559 freq_offset -= synth_freq;
560 if (abs(freq_offset) < range) {
561 ar9003_hw_spur_ofdm_work(ah, chan, freq_offset,
562 range, synth_freq);
563
564 if (AR_SREV_9565(ah) && (i < 4)) {
565 freq_offset = ath9k_hw_fbin2freq(spurChansPtr[i + 1],
566 mode);
567 freq_offset -= synth_freq;
568 if (abs(freq_offset) < range)
569 ar9003_hw_spur_ofdm_9565(ah, freq_offset);
570 }
571
572 break;
573 }
574 }
575 }
576
577 static void ar9003_hw_spur_mitigate(struct ath_hw *ah,
578 struct ath9k_channel *chan)
579 {
580 if (!AR_SREV_9565(ah))
581 ar9003_hw_spur_mitigate_mrc_cck(ah, chan);
582 ar9003_hw_spur_mitigate_ofdm(ah, chan);
583 }
584
585 static u32 ar9003_hw_compute_pll_control_soc(struct ath_hw *ah,
586 struct ath9k_channel *chan)
587 {
588 u32 pll;
589
590 pll = SM(0x5, AR_RTC_9300_SOC_PLL_REFDIV);
591
592 if (chan && IS_CHAN_HALF_RATE(chan))
593 pll |= SM(0x1, AR_RTC_9300_SOC_PLL_CLKSEL);
594 else if (chan && IS_CHAN_QUARTER_RATE(chan))
595 pll |= SM(0x2, AR_RTC_9300_SOC_PLL_CLKSEL);
596
597 pll |= SM(0x2c, AR_RTC_9300_SOC_PLL_DIV_INT);
598
599 return pll;
600 }
601
602 static u32 ar9003_hw_compute_pll_control(struct ath_hw *ah,
603 struct ath9k_channel *chan)
604 {
605 u32 pll;
606
607 pll = SM(0x5, AR_RTC_9300_PLL_REFDIV);
608
609 if (chan && IS_CHAN_HALF_RATE(chan))
610 pll |= SM(0x1, AR_RTC_9300_PLL_CLKSEL);
611 else if (chan && IS_CHAN_QUARTER_RATE(chan))
612 pll |= SM(0x2, AR_RTC_9300_PLL_CLKSEL);
613
614 pll |= SM(0x2c, AR_RTC_9300_PLL_DIV);
615
616 return pll;
617 }
618
619 static void ar9003_hw_set_channel_regs(struct ath_hw *ah,
620 struct ath9k_channel *chan)
621 {
622 u32 phymode;
623 u32 enableDacFifo = 0;
624
625 enableDacFifo =
626 (REG_READ(ah, AR_PHY_GEN_CTRL) & AR_PHY_GC_ENABLE_DAC_FIFO);
627
628 /* Enable 11n HT, 20 MHz */
629 phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SHORT_GI_40 | enableDacFifo;
630
631 if (!AR_SREV_9561(ah))
632 phymode |= AR_PHY_GC_SINGLE_HT_LTF1;
633
634 /* Configure baseband for dynamic 20/40 operation */
635 if (IS_CHAN_HT40(chan)) {
636 phymode |= AR_PHY_GC_DYN2040_EN;
637 /* Configure control (primary) channel at +-10MHz */
638 if (IS_CHAN_HT40PLUS(chan))
639 phymode |= AR_PHY_GC_DYN2040_PRI_CH;
640
641 }
642
643 /* make sure we preserve INI settings */
644 phymode |= REG_READ(ah, AR_PHY_GEN_CTRL);
645 /* turn off Green Field detection for STA for now */
646 phymode &= ~AR_PHY_GC_GF_DETECT_EN;
647
648 REG_WRITE(ah, AR_PHY_GEN_CTRL, phymode);
649
650 /* Configure MAC for 20/40 operation */
651 ath9k_hw_set11nmac2040(ah, chan);
652
653 /* global transmit timeout (25 TUs default)*/
654 REG_WRITE(ah, AR_GTXTO, 25 << AR_GTXTO_TIMEOUT_LIMIT_S);
655 /* carrier sense timeout */
656 REG_WRITE(ah, AR_CST, 0xF << AR_CST_TIMEOUT_LIMIT_S);
657 }
658
659 static void ar9003_hw_init_bb(struct ath_hw *ah,
660 struct ath9k_channel *chan)
661 {
662 u32 synthDelay;
663
664 /*
665 * Wait for the frequency synth to settle (synth goes on
666 * via AR_PHY_ACTIVE_EN). Read the phy active delay register.
667 * Value is in 100ns increments.
668 */
669 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
670
671 /* Activate the PHY (includes baseband activate + synthesizer on) */
672 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
673 ath9k_hw_synth_delay(ah, chan, synthDelay);
674 }
675
676 void ar9003_hw_set_chain_masks(struct ath_hw *ah, u8 rx, u8 tx)
677 {
678 if (ah->caps.tx_chainmask == 5 || ah->caps.rx_chainmask == 5)
679 REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
680 AR_PHY_SWAP_ALT_CHAIN);
681
682 REG_WRITE(ah, AR_PHY_RX_CHAINMASK, rx);
683 REG_WRITE(ah, AR_PHY_CAL_CHAINMASK, rx);
684
685 if ((ah->caps.hw_caps & ATH9K_HW_CAP_APM) && (tx == 0x7))
686 tx = 3;
687
688 REG_WRITE(ah, AR_SELFGEN_MASK, tx);
689 }
690
691 /*
692 * Override INI values with chip specific configuration.
693 */
694 static void ar9003_hw_override_ini(struct ath_hw *ah)
695 {
696 u32 val;
697
698 /*
699 * Set the RX_ABORT and RX_DIS and clear it only after
700 * RXE is set for MAC. This prevents frames with
701 * corrupted descriptor status.
702 */
703 REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
704
705 /*
706 * For AR9280 and above, there is a new feature that allows
707 * Multicast search based on both MAC Address and Key ID. By default,
708 * this feature is enabled. But since the driver is not using this
709 * feature, we switch it off; otherwise multicast search based on
710 * MAC addr only will fail.
711 */
712 val = REG_READ(ah, AR_PCU_MISC_MODE2) & (~AR_ADHOC_MCAST_KEYID_ENABLE);
713 val |= AR_AGG_WEP_ENABLE_FIX |
714 AR_AGG_WEP_ENABLE |
715 AR_PCU_MISC_MODE2_CFP_IGNORE;
716 REG_WRITE(ah, AR_PCU_MISC_MODE2, val);
717
718 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
719 REG_WRITE(ah, AR_GLB_SWREG_DISCONT_MODE,
720 AR_GLB_SWREG_DISCONT_EN_BT_WLAN);
721
722 if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0,
723 AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL))
724 ah->enabled_cals |= TX_IQ_CAL;
725 else
726 ah->enabled_cals &= ~TX_IQ_CAL;
727
728 }
729
730 if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE)
731 ah->enabled_cals |= TX_CL_CAL;
732 else
733 ah->enabled_cals &= ~TX_CL_CAL;
734
735 if (AR_SREV_9340(ah) || AR_SREV_9531(ah) || AR_SREV_9550(ah) ||
736 AR_SREV_9561(ah)) {
737 if (ah->is_clk_25mhz) {
738 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
739 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
740 REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
741 } else {
742 REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
743 REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
744 REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
745 }
746 udelay(100);
747 }
748 }
749
750 static void ar9003_hw_prog_ini(struct ath_hw *ah,
751 struct ar5416IniArray *iniArr,
752 int column)
753 {
754 unsigned int i, regWrites = 0;
755
756 /* New INI format: Array may be undefined (pre, core, post arrays) */
757 if (!iniArr->ia_array)
758 return;
759
760 /*
761 * New INI format: Pre, core, and post arrays for a given subsystem
762 * may be modal (> 2 columns) or non-modal (2 columns). Determine if
763 * the array is non-modal and force the column to 1.
764 */
765 if (column >= iniArr->ia_columns)
766 column = 1;
767
768 for (i = 0; i < iniArr->ia_rows; i++) {
769 u32 reg = INI_RA(iniArr, i, 0);
770 u32 val = INI_RA(iniArr, i, column);
771
772 REG_WRITE(ah, reg, val);
773
774 DO_DELAY(regWrites);
775 }
776 }
777
778 static int ar9550_hw_get_modes_txgain_index(struct ath_hw *ah,
779 struct ath9k_channel *chan)
780 {
781 int ret;
782
783 if (IS_CHAN_2GHZ(chan)) {
784 if (IS_CHAN_HT40(chan))
785 return 7;
786 else
787 return 8;
788 }
789
790 if (chan->channel <= 5350)
791 ret = 1;
792 else if ((chan->channel > 5350) && (chan->channel <= 5600))
793 ret = 3;
794 else
795 ret = 5;
796
797 if (IS_CHAN_HT40(chan))
798 ret++;
799
800 return ret;
801 }
802
803 static int ar9561_hw_get_modes_txgain_index(struct ath_hw *ah,
804 struct ath9k_channel *chan)
805 {
806 if (IS_CHAN_2GHZ(chan)) {
807 if (IS_CHAN_HT40(chan))
808 return 1;
809 else
810 return 2;
811 }
812
813 return 0;
814 }
815
816 static void ar9003_doubler_fix(struct ath_hw *ah)
817 {
818 if (AR_SREV_9300(ah) || AR_SREV_9580(ah) || AR_SREV_9550(ah)) {
819 REG_RMW(ah, AR_PHY_65NM_CH0_RXTX2,
820 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK_S |
821 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHOVR_MASK_S, 0);
822 REG_RMW(ah, AR_PHY_65NM_CH1_RXTX2,
823 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK_S |
824 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHOVR_MASK_S, 0);
825 REG_RMW(ah, AR_PHY_65NM_CH2_RXTX2,
826 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK_S |
827 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHOVR_MASK_S, 0);
828
829 udelay(200);
830
831 REG_CLR_BIT(ah, AR_PHY_65NM_CH0_RXTX2,
832 AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK);
833 REG_CLR_BIT(ah, AR_PHY_65NM_CH1_RXTX2,
834 AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK);
835 REG_CLR_BIT(ah, AR_PHY_65NM_CH2_RXTX2,
836 AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK);
837
838 udelay(1);
839
840 REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_RXTX2,
841 AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK, 1);
842 REG_RMW_FIELD(ah, AR_PHY_65NM_CH1_RXTX2,
843 AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK, 1);
844 REG_RMW_FIELD(ah, AR_PHY_65NM_CH2_RXTX2,
845 AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK, 1);
846
847 udelay(200);
848
849 REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_SYNTH12,
850 AR_PHY_65NM_CH0_SYNTH12_VREFMUL3, 0xf);
851
852 REG_RMW(ah, AR_PHY_65NM_CH0_RXTX2, 0,
853 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK_S |
854 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHOVR_MASK_S);
855 REG_RMW(ah, AR_PHY_65NM_CH1_RXTX2, 0,
856 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK_S |
857 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHOVR_MASK_S);
858 REG_RMW(ah, AR_PHY_65NM_CH2_RXTX2, 0,
859 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHON_MASK_S |
860 1 << AR_PHY_65NM_CH0_RXTX2_SYNTHOVR_MASK_S);
861 }
862 }
863
864 static int ar9003_hw_process_ini(struct ath_hw *ah,
865 struct ath9k_channel *chan)
866 {
867 unsigned int regWrites = 0, i;
868 u32 modesIndex;
869
870 if (IS_CHAN_5GHZ(chan))
871 modesIndex = IS_CHAN_HT40(chan) ? 2 : 1;
872 else
873 modesIndex = IS_CHAN_HT40(chan) ? 3 : 4;
874
875 /*
876 * SOC, MAC, BB, RADIO initvals.
877 */
878 for (i = 0; i < ATH_INI_NUM_SPLIT; i++) {
879 ar9003_hw_prog_ini(ah, &ah->iniSOC[i], modesIndex);
880 ar9003_hw_prog_ini(ah, &ah->iniMac[i], modesIndex);
881 ar9003_hw_prog_ini(ah, &ah->iniBB[i], modesIndex);
882 ar9003_hw_prog_ini(ah, &ah->iniRadio[i], modesIndex);
883 if (i == ATH_INI_POST && AR_SREV_9462_20_OR_LATER(ah))
884 ar9003_hw_prog_ini(ah,
885 &ah->ini_radio_post_sys2ant,
886 modesIndex);
887 }
888
889 ar9003_doubler_fix(ah);
890
891 /*
892 * RXGAIN initvals.
893 */
894 REG_WRITE_ARRAY(&ah->iniModesRxGain, 1, regWrites);
895
896 if (AR_SREV_9462_20_OR_LATER(ah)) {
897 /*
898 * CUS217 mix LNA mode.
899 */
900 if (ar9003_hw_get_rx_gain_idx(ah) == 2) {
901 REG_WRITE_ARRAY(&ah->ini_modes_rxgain_bb_core,
902 1, regWrites);
903 REG_WRITE_ARRAY(&ah->ini_modes_rxgain_bb_postamble,
904 modesIndex, regWrites);
905 }
906
907 /*
908 * 5G-XLNA
909 */
910 if ((ar9003_hw_get_rx_gain_idx(ah) == 2) ||
911 (ar9003_hw_get_rx_gain_idx(ah) == 3)) {
912 REG_WRITE_ARRAY(&ah->ini_modes_rxgain_xlna,
913 modesIndex, regWrites);
914 }
915 }
916
917 if (AR_SREV_9550(ah) || AR_SREV_9561(ah))
918 REG_WRITE_ARRAY(&ah->ini_modes_rx_gain_bounds, modesIndex,
919 regWrites);
920
921 if (AR_SREV_9561(ah) && (ar9003_hw_get_rx_gain_idx(ah) == 0))
922 REG_WRITE_ARRAY(&ah->ini_modes_rxgain_xlna,
923 modesIndex, regWrites);
924 /*
925 * TXGAIN initvals.
926 */
927 if (AR_SREV_9550(ah) || AR_SREV_9531(ah) || AR_SREV_9561(ah)) {
928 int modes_txgain_index = 1;
929
930 if (AR_SREV_9550(ah))
931 modes_txgain_index = ar9550_hw_get_modes_txgain_index(ah, chan);
932
933 if (AR_SREV_9561(ah))
934 modes_txgain_index =
935 ar9561_hw_get_modes_txgain_index(ah, chan);
936
937 if (modes_txgain_index < 0)
938 return -EINVAL;
939
940 REG_WRITE_ARRAY(&ah->iniModesTxGain, modes_txgain_index,
941 regWrites);
942 } else {
943 REG_WRITE_ARRAY(&ah->iniModesTxGain, modesIndex, regWrites);
944 }
945
946 /*
947 * For 5GHz channels requiring Fast Clock, apply
948 * different modal values.
949 */
950 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
951 REG_WRITE_ARRAY(&ah->iniModesFastClock,
952 modesIndex, regWrites);
953
954 /*
955 * Clock frequency initvals.
956 */
957 REG_WRITE_ARRAY(&ah->iniAdditional, 1, regWrites);
958
959 /*
960 * JAPAN regulatory.
961 */
962 if (chan->channel == 2484) {
963 ar9003_hw_prog_ini(ah, &ah->iniCckfirJapan2484, 1);
964
965 if (AR_SREV_9531(ah))
966 REG_RMW_FIELD(ah, AR_PHY_FCAL_2_0,
967 AR_PHY_FLC_PWR_THRESH, 0);
968 }
969
970 ah->modes_index = modesIndex;
971 ar9003_hw_override_ini(ah);
972 ar9003_hw_set_channel_regs(ah, chan);
973 ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
974 ath9k_hw_apply_txpower(ah, chan, false);
975
976 return 0;
977 }
978
979 static void ar9003_hw_set_rfmode(struct ath_hw *ah,
980 struct ath9k_channel *chan)
981 {
982 u32 rfMode = 0;
983
984 if (chan == NULL)
985 return;
986
987 if (IS_CHAN_2GHZ(chan))
988 rfMode |= AR_PHY_MODE_DYNAMIC;
989 else
990 rfMode |= AR_PHY_MODE_OFDM;
991
992 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
993 rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE);
994
995 if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
996 REG_RMW_FIELD(ah, AR_PHY_FRAME_CTL,
997 AR_PHY_FRAME_CTL_CF_OVERLAP_WINDOW, 3);
998
999 REG_WRITE(ah, AR_PHY_MODE, rfMode);
1000 }
1001
1002 static void ar9003_hw_mark_phy_inactive(struct ath_hw *ah)
1003 {
1004 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
1005 }
1006
1007 static void ar9003_hw_set_delta_slope(struct ath_hw *ah,
1008 struct ath9k_channel *chan)
1009 {
1010 u32 coef_scaled, ds_coef_exp, ds_coef_man;
1011 u32 clockMhzScaled = 0x64000000;
1012 struct chan_centers centers;
1013
1014 /*
1015 * half and quarter rate can divide the scaled clock by 2 or 4
1016 * scale for selected channel bandwidth
1017 */
1018 if (IS_CHAN_HALF_RATE(chan))
1019 clockMhzScaled = clockMhzScaled >> 1;
1020 else if (IS_CHAN_QUARTER_RATE(chan))
1021 clockMhzScaled = clockMhzScaled >> 2;
1022
1023 /*
1024 * ALGO -> coef = 1e8/fcarrier*fclock/40;
1025 * scaled coef to provide precision for this floating calculation
1026 */
1027 ath9k_hw_get_channel_centers(ah, chan, &centers);
1028 coef_scaled = clockMhzScaled / centers.synth_center;
1029
1030 ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
1031 &ds_coef_exp);
1032
1033 REG_RMW_FIELD(ah, AR_PHY_TIMING3,
1034 AR_PHY_TIMING3_DSC_MAN, ds_coef_man);
1035 REG_RMW_FIELD(ah, AR_PHY_TIMING3,
1036 AR_PHY_TIMING3_DSC_EXP, ds_coef_exp);
1037
1038 /*
1039 * For Short GI,
1040 * scaled coeff is 9/10 that of normal coeff
1041 */
1042 coef_scaled = (9 * coef_scaled) / 10;
1043
1044 ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
1045 &ds_coef_exp);
1046
1047 /* for short gi */
1048 REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
1049 AR_PHY_SGI_DSC_MAN, ds_coef_man);
1050 REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
1051 AR_PHY_SGI_DSC_EXP, ds_coef_exp);
1052 }
1053
1054 static bool ar9003_hw_rfbus_req(struct ath_hw *ah)
1055 {
1056 REG_WRITE(ah, AR_PHY_RFBUS_REQ, AR_PHY_RFBUS_REQ_EN);
1057 return ath9k_hw_wait(ah, AR_PHY_RFBUS_GRANT, AR_PHY_RFBUS_GRANT_EN,
1058 AR_PHY_RFBUS_GRANT_EN, AH_WAIT_TIMEOUT);
1059 }
1060
1061 /*
1062 * Wait for the frequency synth to settle (synth goes on via PHY_ACTIVE_EN).
1063 * Read the phy active delay register. Value is in 100ns increments.
1064 */
1065 static void ar9003_hw_rfbus_done(struct ath_hw *ah)
1066 {
1067 u32 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
1068
1069 ath9k_hw_synth_delay(ah, ah->curchan, synthDelay);
1070
1071 REG_WRITE(ah, AR_PHY_RFBUS_REQ, 0);
1072 }
1073
1074 static bool ar9003_hw_ani_control(struct ath_hw *ah,
1075 enum ath9k_ani_cmd cmd, int param)
1076 {
1077 struct ath_common *common = ath9k_hw_common(ah);
1078 struct ath9k_channel *chan = ah->curchan;
1079 struct ar5416AniState *aniState = &ah->ani;
1080 int m1ThreshLow, m2ThreshLow;
1081 int m1Thresh, m2Thresh;
1082 int m2CountThr, m2CountThrLow;
1083 int m1ThreshLowExt, m2ThreshLowExt;
1084 int m1ThreshExt, m2ThreshExt;
1085 s32 value, value2;
1086
1087 switch (cmd & ah->ani_function) {
1088 case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
1089 /*
1090 * on == 1 means ofdm weak signal detection is ON
1091 * on == 1 is the default, for less noise immunity
1092 *
1093 * on == 0 means ofdm weak signal detection is OFF
1094 * on == 0 means more noise imm
1095 */
1096 u32 on = param ? 1 : 0;
1097
1098 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
1099 goto skip_ws_det;
1100
1101 m1ThreshLow = on ?
1102 aniState->iniDef.m1ThreshLow : m1ThreshLow_off;
1103 m2ThreshLow = on ?
1104 aniState->iniDef.m2ThreshLow : m2ThreshLow_off;
1105 m1Thresh = on ?
1106 aniState->iniDef.m1Thresh : m1Thresh_off;
1107 m2Thresh = on ?
1108 aniState->iniDef.m2Thresh : m2Thresh_off;
1109 m2CountThr = on ?
1110 aniState->iniDef.m2CountThr : m2CountThr_off;
1111 m2CountThrLow = on ?
1112 aniState->iniDef.m2CountThrLow : m2CountThrLow_off;
1113 m1ThreshLowExt = on ?
1114 aniState->iniDef.m1ThreshLowExt : m1ThreshLowExt_off;
1115 m2ThreshLowExt = on ?
1116 aniState->iniDef.m2ThreshLowExt : m2ThreshLowExt_off;
1117 m1ThreshExt = on ?
1118 aniState->iniDef.m1ThreshExt : m1ThreshExt_off;
1119 m2ThreshExt = on ?
1120 aniState->iniDef.m2ThreshExt : m2ThreshExt_off;
1121
1122 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
1123 AR_PHY_SFCORR_LOW_M1_THRESH_LOW,
1124 m1ThreshLow);
1125 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
1126 AR_PHY_SFCORR_LOW_M2_THRESH_LOW,
1127 m2ThreshLow);
1128 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
1129 AR_PHY_SFCORR_M1_THRESH,
1130 m1Thresh);
1131 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
1132 AR_PHY_SFCORR_M2_THRESH,
1133 m2Thresh);
1134 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
1135 AR_PHY_SFCORR_M2COUNT_THR,
1136 m2CountThr);
1137 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
1138 AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW,
1139 m2CountThrLow);
1140 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
1141 AR_PHY_SFCORR_EXT_M1_THRESH_LOW,
1142 m1ThreshLowExt);
1143 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
1144 AR_PHY_SFCORR_EXT_M2_THRESH_LOW,
1145 m2ThreshLowExt);
1146 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
1147 AR_PHY_SFCORR_EXT_M1_THRESH,
1148 m1ThreshExt);
1149 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
1150 AR_PHY_SFCORR_EXT_M2_THRESH,
1151 m2ThreshExt);
1152 skip_ws_det:
1153 if (on)
1154 REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
1155 AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
1156 else
1157 REG_CLR_BIT(ah, AR_PHY_SFCORR_LOW,
1158 AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
1159
1160 if (on != aniState->ofdmWeakSigDetect) {
1161 ath_dbg(common, ANI,
1162 "** ch %d: ofdm weak signal: %s=>%s\n",
1163 chan->channel,
1164 aniState->ofdmWeakSigDetect ?
1165 "on" : "off",
1166 on ? "on" : "off");
1167 if (on)
1168 ah->stats.ast_ani_ofdmon++;
1169 else
1170 ah->stats.ast_ani_ofdmoff++;
1171 aniState->ofdmWeakSigDetect = on;
1172 }
1173 break;
1174 }
1175 case ATH9K_ANI_FIRSTEP_LEVEL:{
1176 u32 level = param;
1177
1178 if (level >= ARRAY_SIZE(firstep_table)) {
1179 ath_dbg(common, ANI,
1180 "ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n",
1181 level, ARRAY_SIZE(firstep_table));
1182 return false;
1183 }
1184
1185 /*
1186 * make register setting relative to default
1187 * from INI file & cap value
1188 */
1189 value = firstep_table[level] -
1190 firstep_table[ATH9K_ANI_FIRSTEP_LVL] +
1191 aniState->iniDef.firstep;
1192 if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN)
1193 value = ATH9K_SIG_FIRSTEP_SETTING_MIN;
1194 if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX)
1195 value = ATH9K_SIG_FIRSTEP_SETTING_MAX;
1196 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
1197 AR_PHY_FIND_SIG_FIRSTEP,
1198 value);
1199 /*
1200 * we need to set first step low register too
1201 * make register setting relative to default
1202 * from INI file & cap value
1203 */
1204 value2 = firstep_table[level] -
1205 firstep_table[ATH9K_ANI_FIRSTEP_LVL] +
1206 aniState->iniDef.firstepLow;
1207 if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN)
1208 value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN;
1209 if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX)
1210 value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX;
1211
1212 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
1213 AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW, value2);
1214
1215 if (level != aniState->firstepLevel) {
1216 ath_dbg(common, ANI,
1217 "** ch %d: level %d=>%d[def:%d] firstep[level]=%d ini=%d\n",
1218 chan->channel,
1219 aniState->firstepLevel,
1220 level,
1221 ATH9K_ANI_FIRSTEP_LVL,
1222 value,
1223 aniState->iniDef.firstep);
1224 ath_dbg(common, ANI,
1225 "** ch %d: level %d=>%d[def:%d] firstep_low[level]=%d ini=%d\n",
1226 chan->channel,
1227 aniState->firstepLevel,
1228 level,
1229 ATH9K_ANI_FIRSTEP_LVL,
1230 value2,
1231 aniState->iniDef.firstepLow);
1232 if (level > aniState->firstepLevel)
1233 ah->stats.ast_ani_stepup++;
1234 else if (level < aniState->firstepLevel)
1235 ah->stats.ast_ani_stepdown++;
1236 aniState->firstepLevel = level;
1237 }
1238 break;
1239 }
1240 case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
1241 u32 level = param;
1242
1243 if (level >= ARRAY_SIZE(cycpwrThr1_table)) {
1244 ath_dbg(common, ANI,
1245 "ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n",
1246 level, ARRAY_SIZE(cycpwrThr1_table));
1247 return false;
1248 }
1249 /*
1250 * make register setting relative to default
1251 * from INI file & cap value
1252 */
1253 value = cycpwrThr1_table[level] -
1254 cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] +
1255 aniState->iniDef.cycpwrThr1;
1256 if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
1257 value = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
1258 if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
1259 value = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
1260 REG_RMW_FIELD(ah, AR_PHY_TIMING5,
1261 AR_PHY_TIMING5_CYCPWR_THR1,
1262 value);
1263
1264 /*
1265 * set AR_PHY_EXT_CCA for extension channel
1266 * make register setting relative to default
1267 * from INI file & cap value
1268 */
1269 value2 = cycpwrThr1_table[level] -
1270 cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] +
1271 aniState->iniDef.cycpwrThr1Ext;
1272 if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
1273 value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
1274 if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
1275 value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
1276 REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
1277 AR_PHY_EXT_CYCPWR_THR1, value2);
1278
1279 if (level != aniState->spurImmunityLevel) {
1280 ath_dbg(common, ANI,
1281 "** ch %d: level %d=>%d[def:%d] cycpwrThr1[level]=%d ini=%d\n",
1282 chan->channel,
1283 aniState->spurImmunityLevel,
1284 level,
1285 ATH9K_ANI_SPUR_IMMUNE_LVL,
1286 value,
1287 aniState->iniDef.cycpwrThr1);
1288 ath_dbg(common, ANI,
1289 "** ch %d: level %d=>%d[def:%d] cycpwrThr1Ext[level]=%d ini=%d\n",
1290 chan->channel,
1291 aniState->spurImmunityLevel,
1292 level,
1293 ATH9K_ANI_SPUR_IMMUNE_LVL,
1294 value2,
1295 aniState->iniDef.cycpwrThr1Ext);
1296 if (level > aniState->spurImmunityLevel)
1297 ah->stats.ast_ani_spurup++;
1298 else if (level < aniState->spurImmunityLevel)
1299 ah->stats.ast_ani_spurdown++;
1300 aniState->spurImmunityLevel = level;
1301 }
1302 break;
1303 }
1304 case ATH9K_ANI_MRC_CCK:{
1305 /*
1306 * is_on == 1 means MRC CCK ON (default, less noise imm)
1307 * is_on == 0 means MRC CCK is OFF (more noise imm)
1308 */
1309 bool is_on = param ? 1 : 0;
1310
1311 if (ah->caps.rx_chainmask == 1)
1312 break;
1313
1314 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1315 AR_PHY_MRC_CCK_ENABLE, is_on);
1316 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1317 AR_PHY_MRC_CCK_MUX_REG, is_on);
1318 if (is_on != aniState->mrcCCK) {
1319 ath_dbg(common, ANI, "** ch %d: MRC CCK: %s=>%s\n",
1320 chan->channel,
1321 aniState->mrcCCK ? "on" : "off",
1322 is_on ? "on" : "off");
1323 if (is_on)
1324 ah->stats.ast_ani_ccklow++;
1325 else
1326 ah->stats.ast_ani_cckhigh++;
1327 aniState->mrcCCK = is_on;
1328 }
1329 break;
1330 }
1331 default:
1332 ath_dbg(common, ANI, "invalid cmd %u\n", cmd);
1333 return false;
1334 }
1335
1336 ath_dbg(common, ANI,
1337 "ANI parameters: SI=%d, ofdmWS=%s FS=%d MRCcck=%s listenTime=%d ofdmErrs=%d cckErrs=%d\n",
1338 aniState->spurImmunityLevel,
1339 aniState->ofdmWeakSigDetect ? "on" : "off",
1340 aniState->firstepLevel,
1341 aniState->mrcCCK ? "on" : "off",
1342 aniState->listenTime,
1343 aniState->ofdmPhyErrCount,
1344 aniState->cckPhyErrCount);
1345 return true;
1346 }
1347
1348 static void ar9003_hw_do_getnf(struct ath_hw *ah,
1349 int16_t nfarray[NUM_NF_READINGS])
1350 {
1351 #define AR_PHY_CH_MINCCA_PWR 0x1FF00000
1352 #define AR_PHY_CH_MINCCA_PWR_S 20
1353 #define AR_PHY_CH_EXT_MINCCA_PWR 0x01FF0000
1354 #define AR_PHY_CH_EXT_MINCCA_PWR_S 16
1355
1356 int16_t nf;
1357 int i;
1358
1359 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1360 if (ah->rxchainmask & BIT(i)) {
1361 nf = MS(REG_READ(ah, ah->nf_regs[i]),
1362 AR_PHY_CH_MINCCA_PWR);
1363 nfarray[i] = sign_extend32(nf, 8);
1364
1365 if (IS_CHAN_HT40(ah->curchan)) {
1366 u8 ext_idx = AR9300_MAX_CHAINS + i;
1367
1368 nf = MS(REG_READ(ah, ah->nf_regs[ext_idx]),
1369 AR_PHY_CH_EXT_MINCCA_PWR);
1370 nfarray[ext_idx] = sign_extend32(nf, 8);
1371 }
1372 }
1373 }
1374 }
1375
1376 static void ar9003_hw_set_nf_limits(struct ath_hw *ah)
1377 {
1378 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ;
1379 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_2GHZ;
1380 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9300_2GHZ;
1381 ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_5GHZ;
1382 ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_5GHZ;
1383 ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9300_5GHZ;
1384
1385 if (AR_SREV_9330(ah))
1386 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9330_2GHZ;
1387
1388 if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
1389 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9462_2GHZ;
1390 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9462_2GHZ;
1391 ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9462_5GHZ;
1392 ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9462_5GHZ;
1393 }
1394 }
1395
1396 /*
1397 * Initialize the ANI register values with default (ini) values.
1398 * This routine is called during a (full) hardware reset after
1399 * all the registers are initialised from the INI.
1400 */
1401 static void ar9003_hw_ani_cache_ini_regs(struct ath_hw *ah)
1402 {
1403 struct ar5416AniState *aniState;
1404 struct ath_common *common = ath9k_hw_common(ah);
1405 struct ath9k_channel *chan = ah->curchan;
1406 struct ath9k_ani_default *iniDef;
1407 u32 val;
1408
1409 aniState = &ah->ani;
1410 iniDef = &aniState->iniDef;
1411
1412 ath_dbg(common, ANI, "ver %d.%d opmode %u chan %d Mhz\n",
1413 ah->hw_version.macVersion,
1414 ah->hw_version.macRev,
1415 ah->opmode,
1416 chan->channel);
1417
1418 val = REG_READ(ah, AR_PHY_SFCORR);
1419 iniDef->m1Thresh = MS(val, AR_PHY_SFCORR_M1_THRESH);
1420 iniDef->m2Thresh = MS(val, AR_PHY_SFCORR_M2_THRESH);
1421 iniDef->m2CountThr = MS(val, AR_PHY_SFCORR_M2COUNT_THR);
1422
1423 val = REG_READ(ah, AR_PHY_SFCORR_LOW);
1424 iniDef->m1ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M1_THRESH_LOW);
1425 iniDef->m2ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M2_THRESH_LOW);
1426 iniDef->m2CountThrLow = MS(val, AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW);
1427
1428 val = REG_READ(ah, AR_PHY_SFCORR_EXT);
1429 iniDef->m1ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH);
1430 iniDef->m2ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH);
1431 iniDef->m1ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH_LOW);
1432 iniDef->m2ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH_LOW);
1433 iniDef->firstep = REG_READ_FIELD(ah,
1434 AR_PHY_FIND_SIG,
1435 AR_PHY_FIND_SIG_FIRSTEP);
1436 iniDef->firstepLow = REG_READ_FIELD(ah,
1437 AR_PHY_FIND_SIG_LOW,
1438 AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW);
1439 iniDef->cycpwrThr1 = REG_READ_FIELD(ah,
1440 AR_PHY_TIMING5,
1441 AR_PHY_TIMING5_CYCPWR_THR1);
1442 iniDef->cycpwrThr1Ext = REG_READ_FIELD(ah,
1443 AR_PHY_EXT_CCA,
1444 AR_PHY_EXT_CYCPWR_THR1);
1445
1446 /* these levels just got reset to defaults by the INI */
1447 aniState->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL;
1448 aniState->firstepLevel = ATH9K_ANI_FIRSTEP_LVL;
1449 aniState->ofdmWeakSigDetect = true;
1450 aniState->mrcCCK = true;
1451 }
1452
1453 static void ar9003_hw_set_radar_params(struct ath_hw *ah,
1454 struct ath_hw_radar_conf *conf)
1455 {
1456 unsigned int regWrites = 0;
1457 u32 radar_0 = 0, radar_1;
1458
1459 if (!conf) {
1460 REG_CLR_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_ENA);
1461 return;
1462 }
1463
1464 radar_0 |= AR_PHY_RADAR_0_ENA | AR_PHY_RADAR_0_FFT_ENA;
1465 radar_0 |= SM(conf->fir_power, AR_PHY_RADAR_0_FIRPWR);
1466 radar_0 |= SM(conf->radar_rssi, AR_PHY_RADAR_0_RRSSI);
1467 radar_0 |= SM(conf->pulse_height, AR_PHY_RADAR_0_HEIGHT);
1468 radar_0 |= SM(conf->pulse_rssi, AR_PHY_RADAR_0_PRSSI);
1469 radar_0 |= SM(conf->pulse_inband, AR_PHY_RADAR_0_INBAND);
1470
1471 radar_1 = REG_READ(ah, AR_PHY_RADAR_1);
1472 radar_1 &= ~(AR_PHY_RADAR_1_MAXLEN | AR_PHY_RADAR_1_RELSTEP_THRESH |
1473 AR_PHY_RADAR_1_RELPWR_THRESH);
1474 radar_1 |= AR_PHY_RADAR_1_MAX_RRSSI;
1475 radar_1 |= AR_PHY_RADAR_1_BLOCK_CHECK;
1476 radar_1 |= SM(conf->pulse_maxlen, AR_PHY_RADAR_1_MAXLEN);
1477 radar_1 |= SM(conf->pulse_inband_step, AR_PHY_RADAR_1_RELSTEP_THRESH);
1478 radar_1 |= SM(conf->radar_inband, AR_PHY_RADAR_1_RELPWR_THRESH);
1479
1480 REG_WRITE(ah, AR_PHY_RADAR_0, radar_0);
1481 REG_WRITE(ah, AR_PHY_RADAR_1, radar_1);
1482 if (conf->ext_channel)
1483 REG_SET_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1484 else
1485 REG_CLR_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1486
1487 if (AR_SREV_9300(ah) || AR_SREV_9340(ah) || AR_SREV_9580(ah)) {
1488 REG_WRITE_ARRAY(&ah->ini_dfs,
1489 IS_CHAN_HT40(ah->curchan) ? 2 : 1, regWrites);
1490 }
1491 }
1492
1493 static void ar9003_hw_set_radar_conf(struct ath_hw *ah)
1494 {
1495 struct ath_hw_radar_conf *conf = &ah->radar_conf;
1496
1497 conf->fir_power = -28;
1498 conf->radar_rssi = 0;
1499 conf->pulse_height = 10;
1500 conf->pulse_rssi = 15;
1501 conf->pulse_inband = 8;
1502 conf->pulse_maxlen = 255;
1503 conf->pulse_inband_step = 12;
1504 conf->radar_inband = 8;
1505 }
1506
1507 static void ar9003_hw_antdiv_comb_conf_get(struct ath_hw *ah,
1508 struct ath_hw_antcomb_conf *antconf)
1509 {
1510 u32 regval;
1511
1512 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1513 antconf->main_lna_conf = (regval & AR_PHY_ANT_DIV_MAIN_LNACONF) >>
1514 AR_PHY_ANT_DIV_MAIN_LNACONF_S;
1515 antconf->alt_lna_conf = (regval & AR_PHY_ANT_DIV_ALT_LNACONF) >>
1516 AR_PHY_ANT_DIV_ALT_LNACONF_S;
1517 antconf->fast_div_bias = (regval & AR_PHY_ANT_FAST_DIV_BIAS) >>
1518 AR_PHY_ANT_FAST_DIV_BIAS_S;
1519
1520 if (AR_SREV_9330_11(ah)) {
1521 antconf->lna1_lna2_switch_delta = -1;
1522 antconf->lna1_lna2_delta = -9;
1523 antconf->div_group = 1;
1524 } else if (AR_SREV_9485(ah)) {
1525 antconf->lna1_lna2_switch_delta = -1;
1526 antconf->lna1_lna2_delta = -9;
1527 antconf->div_group = 2;
1528 } else if (AR_SREV_9565(ah)) {
1529 antconf->lna1_lna2_switch_delta = 3;
1530 antconf->lna1_lna2_delta = -9;
1531 antconf->div_group = 3;
1532 } else {
1533 antconf->lna1_lna2_switch_delta = -1;
1534 antconf->lna1_lna2_delta = -3;
1535 antconf->div_group = 0;
1536 }
1537 }
1538
1539 static void ar9003_hw_antdiv_comb_conf_set(struct ath_hw *ah,
1540 struct ath_hw_antcomb_conf *antconf)
1541 {
1542 u32 regval;
1543
1544 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1545 regval &= ~(AR_PHY_ANT_DIV_MAIN_LNACONF |
1546 AR_PHY_ANT_DIV_ALT_LNACONF |
1547 AR_PHY_ANT_FAST_DIV_BIAS |
1548 AR_PHY_ANT_DIV_MAIN_GAINTB |
1549 AR_PHY_ANT_DIV_ALT_GAINTB);
1550 regval |= ((antconf->main_lna_conf << AR_PHY_ANT_DIV_MAIN_LNACONF_S)
1551 & AR_PHY_ANT_DIV_MAIN_LNACONF);
1552 regval |= ((antconf->alt_lna_conf << AR_PHY_ANT_DIV_ALT_LNACONF_S)
1553 & AR_PHY_ANT_DIV_ALT_LNACONF);
1554 regval |= ((antconf->fast_div_bias << AR_PHY_ANT_FAST_DIV_BIAS_S)
1555 & AR_PHY_ANT_FAST_DIV_BIAS);
1556 regval |= ((antconf->main_gaintb << AR_PHY_ANT_DIV_MAIN_GAINTB_S)
1557 & AR_PHY_ANT_DIV_MAIN_GAINTB);
1558 regval |= ((antconf->alt_gaintb << AR_PHY_ANT_DIV_ALT_GAINTB_S)
1559 & AR_PHY_ANT_DIV_ALT_GAINTB);
1560
1561 REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1562 }
1563
1564 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1565
1566 static void ar9003_hw_set_bt_ant_diversity(struct ath_hw *ah, bool enable)
1567 {
1568 struct ath9k_hw_capabilities *pCap = &ah->caps;
1569 u8 ant_div_ctl1;
1570 u32 regval;
1571
1572 if (!AR_SREV_9485(ah) && !AR_SREV_9565(ah))
1573 return;
1574
1575 if (AR_SREV_9485(ah)) {
1576 regval = ar9003_hw_ant_ctrl_common_2_get(ah,
1577 IS_CHAN_2GHZ(ah->curchan));
1578 if (enable) {
1579 regval &= ~AR_SWITCH_TABLE_COM2_ALL;
1580 regval |= ah->config.ant_ctrl_comm2g_switch_enable;
1581 }
1582 REG_RMW_FIELD(ah, AR_PHY_SWITCH_COM_2,
1583 AR_SWITCH_TABLE_COM2_ALL, regval);
1584 }
1585
1586 ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
1587
1588 /*
1589 * Set MAIN/ALT LNA conf.
1590 * Set MAIN/ALT gain_tb.
1591 */
1592 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1593 regval &= (~AR_ANT_DIV_CTRL_ALL);
1594 regval |= (ant_div_ctl1 & 0x3f) << AR_ANT_DIV_CTRL_ALL_S;
1595 REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1596
1597 if (AR_SREV_9485_11_OR_LATER(ah)) {
1598 /*
1599 * Enable LNA diversity.
1600 */
1601 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1602 regval &= ~AR_PHY_ANT_DIV_LNADIV;
1603 regval |= ((ant_div_ctl1 >> 6) & 0x1) << AR_PHY_ANT_DIV_LNADIV_S;
1604 if (enable)
1605 regval |= AR_ANT_DIV_ENABLE;
1606
1607 REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1608
1609 /*
1610 * Enable fast antenna diversity.
1611 */
1612 regval = REG_READ(ah, AR_PHY_CCK_DETECT);
1613 regval &= ~AR_FAST_DIV_ENABLE;
1614 regval |= ((ant_div_ctl1 >> 7) & 0x1) << AR_FAST_DIV_ENABLE_S;
1615 if (enable)
1616 regval |= AR_FAST_DIV_ENABLE;
1617
1618 REG_WRITE(ah, AR_PHY_CCK_DETECT, regval);
1619
1620 if (pCap->hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) {
1621 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1622 regval &= (~(AR_PHY_ANT_DIV_MAIN_LNACONF |
1623 AR_PHY_ANT_DIV_ALT_LNACONF |
1624 AR_PHY_ANT_DIV_ALT_GAINTB |
1625 AR_PHY_ANT_DIV_MAIN_GAINTB));
1626 /*
1627 * Set MAIN to LNA1 and ALT to LNA2 at the
1628 * beginning.
1629 */
1630 regval |= (ATH_ANT_DIV_COMB_LNA1 <<
1631 AR_PHY_ANT_DIV_MAIN_LNACONF_S);
1632 regval |= (ATH_ANT_DIV_COMB_LNA2 <<
1633 AR_PHY_ANT_DIV_ALT_LNACONF_S);
1634 REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1635 }
1636 } else if (AR_SREV_9565(ah)) {
1637 if (enable) {
1638 REG_SET_BIT(ah, AR_PHY_MC_GAIN_CTRL,
1639 AR_ANT_DIV_ENABLE);
1640 REG_SET_BIT(ah, AR_PHY_MC_GAIN_CTRL,
1641 (1 << AR_PHY_ANT_SW_RX_PROT_S));
1642 REG_SET_BIT(ah, AR_PHY_CCK_DETECT,
1643 AR_FAST_DIV_ENABLE);
1644 REG_SET_BIT(ah, AR_PHY_RESTART,
1645 AR_PHY_RESTART_ENABLE_DIV_M2FLAG);
1646 REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV,
1647 AR_BTCOEX_WL_LNADIV_FORCE_ON);
1648 } else {
1649 REG_CLR_BIT(ah, AR_PHY_MC_GAIN_CTRL,
1650 AR_ANT_DIV_ENABLE);
1651 REG_CLR_BIT(ah, AR_PHY_MC_GAIN_CTRL,
1652 (1 << AR_PHY_ANT_SW_RX_PROT_S));
1653 REG_CLR_BIT(ah, AR_PHY_CCK_DETECT,
1654 AR_FAST_DIV_ENABLE);
1655 REG_CLR_BIT(ah, AR_PHY_RESTART,
1656 AR_PHY_RESTART_ENABLE_DIV_M2FLAG);
1657 REG_CLR_BIT(ah, AR_BTCOEX_WL_LNADIV,
1658 AR_BTCOEX_WL_LNADIV_FORCE_ON);
1659
1660 regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1661 regval &= ~(AR_PHY_ANT_DIV_MAIN_LNACONF |
1662 AR_PHY_ANT_DIV_ALT_LNACONF |
1663 AR_PHY_ANT_DIV_MAIN_GAINTB |
1664 AR_PHY_ANT_DIV_ALT_GAINTB);
1665 regval |= (ATH_ANT_DIV_COMB_LNA1 <<
1666 AR_PHY_ANT_DIV_MAIN_LNACONF_S);
1667 regval |= (ATH_ANT_DIV_COMB_LNA2 <<
1668 AR_PHY_ANT_DIV_ALT_LNACONF_S);
1669 REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1670 }
1671 }
1672 }
1673
1674 #endif
1675
1676 static int ar9003_hw_fast_chan_change(struct ath_hw *ah,
1677 struct ath9k_channel *chan,
1678 u8 *ini_reloaded)
1679 {
1680 unsigned int regWrites = 0;
1681 u32 modesIndex, txgain_index;
1682
1683 if (IS_CHAN_5GHZ(chan))
1684 modesIndex = IS_CHAN_HT40(chan) ? 2 : 1;
1685 else
1686 modesIndex = IS_CHAN_HT40(chan) ? 3 : 4;
1687
1688 txgain_index = AR_SREV_9531(ah) ? 1 : modesIndex;
1689
1690 if (modesIndex == ah->modes_index) {
1691 *ini_reloaded = false;
1692 goto set_rfmode;
1693 }
1694
1695 ar9003_hw_prog_ini(ah, &ah->iniSOC[ATH_INI_POST], modesIndex);
1696 ar9003_hw_prog_ini(ah, &ah->iniMac[ATH_INI_POST], modesIndex);
1697 ar9003_hw_prog_ini(ah, &ah->iniBB[ATH_INI_POST], modesIndex);
1698 ar9003_hw_prog_ini(ah, &ah->iniRadio[ATH_INI_POST], modesIndex);
1699
1700 if (AR_SREV_9462_20_OR_LATER(ah))
1701 ar9003_hw_prog_ini(ah, &ah->ini_radio_post_sys2ant,
1702 modesIndex);
1703
1704 REG_WRITE_ARRAY(&ah->iniModesTxGain, txgain_index, regWrites);
1705
1706 if (AR_SREV_9462_20_OR_LATER(ah)) {
1707 /*
1708 * CUS217 mix LNA mode.
1709 */
1710 if (ar9003_hw_get_rx_gain_idx(ah) == 2) {
1711 REG_WRITE_ARRAY(&ah->ini_modes_rxgain_bb_core,
1712 1, regWrites);
1713 REG_WRITE_ARRAY(&ah->ini_modes_rxgain_bb_postamble,
1714 modesIndex, regWrites);
1715 }
1716 }
1717
1718 /*
1719 * For 5GHz channels requiring Fast Clock, apply
1720 * different modal values.
1721 */
1722 if (IS_CHAN_A_FAST_CLOCK(ah, chan))
1723 REG_WRITE_ARRAY(&ah->iniModesFastClock, modesIndex, regWrites);
1724
1725 if (AR_SREV_9565(ah))
1726 REG_WRITE_ARRAY(&ah->iniModesFastClock, 1, regWrites);
1727
1728 /*
1729 * JAPAN regulatory.
1730 */
1731 if (chan->channel == 2484)
1732 ar9003_hw_prog_ini(ah, &ah->iniCckfirJapan2484, 1);
1733
1734 ah->modes_index = modesIndex;
1735 *ini_reloaded = true;
1736
1737 set_rfmode:
1738 ar9003_hw_set_rfmode(ah, chan);
1739 return 0;
1740 }
1741
1742 static void ar9003_hw_spectral_scan_config(struct ath_hw *ah,
1743 struct ath_spec_scan *param)
1744 {
1745 u8 count;
1746
1747 if (!param->enabled) {
1748 REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN,
1749 AR_PHY_SPECTRAL_SCAN_ENABLE);
1750 return;
1751 }
1752
1753 REG_SET_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_FFT_ENA);
1754 REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, AR_PHY_SPECTRAL_SCAN_ENABLE);
1755
1756 /* on AR93xx and newer, count = 0 will make the the chip send
1757 * spectral samples endlessly. Check if this really was intended,
1758 * and fix otherwise.
1759 */
1760 count = param->count;
1761 if (param->endless)
1762 count = 0;
1763 else if (param->count == 0)
1764 count = 1;
1765
1766 if (param->short_repeat)
1767 REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
1768 AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
1769 else
1770 REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN,
1771 AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
1772
1773 REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
1774 AR_PHY_SPECTRAL_SCAN_COUNT, count);
1775 REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
1776 AR_PHY_SPECTRAL_SCAN_PERIOD, param->period);
1777 REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
1778 AR_PHY_SPECTRAL_SCAN_FFT_PERIOD, param->fft_period);
1779
1780 return;
1781 }
1782
1783 static void ar9003_hw_spectral_scan_trigger(struct ath_hw *ah)
1784 {
1785 REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
1786 AR_PHY_SPECTRAL_SCAN_ENABLE);
1787 /* Activate spectral scan */
1788 REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
1789 AR_PHY_SPECTRAL_SCAN_ACTIVE);
1790 }
1791
1792 static void ar9003_hw_spectral_scan_wait(struct ath_hw *ah)
1793 {
1794 struct ath_common *common = ath9k_hw_common(ah);
1795
1796 /* Poll for spectral scan complete */
1797 if (!ath9k_hw_wait(ah, AR_PHY_SPECTRAL_SCAN,
1798 AR_PHY_SPECTRAL_SCAN_ACTIVE,
1799 0, AH_WAIT_TIMEOUT)) {
1800 ath_err(common, "spectral scan wait failed\n");
1801 return;
1802 }
1803 }
1804
1805 static void ar9003_hw_tx99_start(struct ath_hw *ah, u32 qnum)
1806 {
1807 REG_SET_BIT(ah, AR_PHY_TEST, PHY_AGC_CLR);
1808 REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
1809 REG_WRITE(ah, AR_CR, AR_CR_RXD);
1810 REG_WRITE(ah, AR_DLCL_IFS(qnum), 0);
1811 REG_WRITE(ah, AR_D_GBL_IFS_SIFS, 20); /* 50 OK */
1812 REG_WRITE(ah, AR_D_GBL_IFS_EIFS, 20);
1813 REG_WRITE(ah, AR_TIME_OUT, 0x00000400);
1814 REG_WRITE(ah, AR_DRETRY_LIMIT(qnum), 0xffffffff);
1815 REG_SET_BIT(ah, AR_QMISC(qnum), AR_Q_MISC_DCU_EARLY_TERM_REQ);
1816 }
1817
1818 static void ar9003_hw_tx99_stop(struct ath_hw *ah)
1819 {
1820 REG_CLR_BIT(ah, AR_PHY_TEST, PHY_AGC_CLR);
1821 REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
1822 }
1823
1824 static void ar9003_hw_tx99_set_txpower(struct ath_hw *ah, u8 txpower)
1825 {
1826 static u8 p_pwr_array[ar9300RateSize] = { 0 };
1827 unsigned int i;
1828
1829 txpower = txpower <= MAX_RATE_POWER ? txpower : MAX_RATE_POWER;
1830 for (i = 0; i < ar9300RateSize; i++)
1831 p_pwr_array[i] = txpower;
1832
1833 ar9003_hw_tx_power_regwrite(ah, p_pwr_array);
1834 }
1835
1836 static void ar9003_hw_init_txpower_cck(struct ath_hw *ah, u8 *rate_array)
1837 {
1838 ah->tx_power[0] = rate_array[ALL_TARGET_LEGACY_1L_5L];
1839 ah->tx_power[1] = rate_array[ALL_TARGET_LEGACY_1L_5L];
1840 ah->tx_power[2] = min(rate_array[ALL_TARGET_LEGACY_1L_5L],
1841 rate_array[ALL_TARGET_LEGACY_5S]);
1842 ah->tx_power[3] = min(rate_array[ALL_TARGET_LEGACY_11L],
1843 rate_array[ALL_TARGET_LEGACY_11S]);
1844 }
1845
1846 static void ar9003_hw_init_txpower_ofdm(struct ath_hw *ah, u8 *rate_array,
1847 int offset)
1848 {
1849 int i, j;
1850
1851 for (i = offset; i < offset + AR9300_OFDM_RATES; i++) {
1852 /* OFDM rate to power table idx */
1853 j = ofdm2pwr[i - offset];
1854 ah->tx_power[i] = rate_array[j];
1855 }
1856 }
1857
1858 static void ar9003_hw_init_txpower_ht(struct ath_hw *ah, u8 *rate_array,
1859 int ss_offset, int ds_offset,
1860 int ts_offset, bool is_40)
1861 {
1862 int i, j, mcs_idx = 0;
1863 const u8 *mcs2pwr = (is_40) ? mcs2pwr_ht40 : mcs2pwr_ht20;
1864
1865 for (i = ss_offset; i < ss_offset + AR9300_HT_SS_RATES; i++) {
1866 j = mcs2pwr[mcs_idx];
1867 ah->tx_power[i] = rate_array[j];
1868 mcs_idx++;
1869 }
1870
1871 for (i = ds_offset; i < ds_offset + AR9300_HT_DS_RATES; i++) {
1872 j = mcs2pwr[mcs_idx];
1873 ah->tx_power[i] = rate_array[j];
1874 mcs_idx++;
1875 }
1876
1877 for (i = ts_offset; i < ts_offset + AR9300_HT_TS_RATES; i++) {
1878 j = mcs2pwr[mcs_idx];
1879 ah->tx_power[i] = rate_array[j];
1880 mcs_idx++;
1881 }
1882 }
1883
1884 static void ar9003_hw_init_txpower_stbc(struct ath_hw *ah, int ss_offset,
1885 int ds_offset, int ts_offset)
1886 {
1887 memcpy(&ah->tx_power_stbc[ss_offset], &ah->tx_power[ss_offset],
1888 AR9300_HT_SS_RATES);
1889 memcpy(&ah->tx_power_stbc[ds_offset], &ah->tx_power[ds_offset],
1890 AR9300_HT_DS_RATES);
1891 memcpy(&ah->tx_power_stbc[ts_offset], &ah->tx_power[ts_offset],
1892 AR9300_HT_TS_RATES);
1893 }
1894
1895 void ar9003_hw_init_rate_txpower(struct ath_hw *ah, u8 *rate_array,
1896 struct ath9k_channel *chan)
1897 {
1898 if (IS_CHAN_5GHZ(chan)) {
1899 ar9003_hw_init_txpower_ofdm(ah, rate_array,
1900 AR9300_11NA_OFDM_SHIFT);
1901 if (IS_CHAN_HT20(chan) || IS_CHAN_HT40(chan)) {
1902 ar9003_hw_init_txpower_ht(ah, rate_array,
1903 AR9300_11NA_HT_SS_SHIFT,
1904 AR9300_11NA_HT_DS_SHIFT,
1905 AR9300_11NA_HT_TS_SHIFT,
1906 IS_CHAN_HT40(chan));
1907 ar9003_hw_init_txpower_stbc(ah,
1908 AR9300_11NA_HT_SS_SHIFT,
1909 AR9300_11NA_HT_DS_SHIFT,
1910 AR9300_11NA_HT_TS_SHIFT);
1911 }
1912 } else {
1913 ar9003_hw_init_txpower_cck(ah, rate_array);
1914 ar9003_hw_init_txpower_ofdm(ah, rate_array,
1915 AR9300_11NG_OFDM_SHIFT);
1916 if (IS_CHAN_HT20(chan) || IS_CHAN_HT40(chan)) {
1917 ar9003_hw_init_txpower_ht(ah, rate_array,
1918 AR9300_11NG_HT_SS_SHIFT,
1919 AR9300_11NG_HT_DS_SHIFT,
1920 AR9300_11NG_HT_TS_SHIFT,
1921 IS_CHAN_HT40(chan));
1922 ar9003_hw_init_txpower_stbc(ah,
1923 AR9300_11NG_HT_SS_SHIFT,
1924 AR9300_11NG_HT_DS_SHIFT,
1925 AR9300_11NG_HT_TS_SHIFT);
1926 }
1927 }
1928 }
1929
1930 void ar9003_hw_attach_phy_ops(struct ath_hw *ah)
1931 {
1932 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1933 struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1934 static const u32 ar9300_cca_regs[6] = {
1935 AR_PHY_CCA_0,
1936 AR_PHY_CCA_1,
1937 AR_PHY_CCA_2,
1938 AR_PHY_EXT_CCA,
1939 AR_PHY_EXT_CCA_1,
1940 AR_PHY_EXT_CCA_2,
1941 };
1942
1943 priv_ops->rf_set_freq = ar9003_hw_set_channel;
1944 priv_ops->spur_mitigate_freq = ar9003_hw_spur_mitigate;
1945
1946 if (AR_SREV_9340(ah) || AR_SREV_9550(ah) || AR_SREV_9531(ah) ||
1947 AR_SREV_9561(ah))
1948 priv_ops->compute_pll_control = ar9003_hw_compute_pll_control_soc;
1949 else
1950 priv_ops->compute_pll_control = ar9003_hw_compute_pll_control;
1951
1952 priv_ops->set_channel_regs = ar9003_hw_set_channel_regs;
1953 priv_ops->init_bb = ar9003_hw_init_bb;
1954 priv_ops->process_ini = ar9003_hw_process_ini;
1955 priv_ops->set_rfmode = ar9003_hw_set_rfmode;
1956 priv_ops->mark_phy_inactive = ar9003_hw_mark_phy_inactive;
1957 priv_ops->set_delta_slope = ar9003_hw_set_delta_slope;
1958 priv_ops->rfbus_req = ar9003_hw_rfbus_req;
1959 priv_ops->rfbus_done = ar9003_hw_rfbus_done;
1960 priv_ops->ani_control = ar9003_hw_ani_control;
1961 priv_ops->do_getnf = ar9003_hw_do_getnf;
1962 priv_ops->ani_cache_ini_regs = ar9003_hw_ani_cache_ini_regs;
1963 priv_ops->set_radar_params = ar9003_hw_set_radar_params;
1964 priv_ops->fast_chan_change = ar9003_hw_fast_chan_change;
1965
1966 ops->antdiv_comb_conf_get = ar9003_hw_antdiv_comb_conf_get;
1967 ops->antdiv_comb_conf_set = ar9003_hw_antdiv_comb_conf_set;
1968 ops->spectral_scan_config = ar9003_hw_spectral_scan_config;
1969 ops->spectral_scan_trigger = ar9003_hw_spectral_scan_trigger;
1970 ops->spectral_scan_wait = ar9003_hw_spectral_scan_wait;
1971
1972 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1973 ops->set_bt_ant_diversity = ar9003_hw_set_bt_ant_diversity;
1974 #endif
1975 ops->tx99_start = ar9003_hw_tx99_start;
1976 ops->tx99_stop = ar9003_hw_tx99_stop;
1977 ops->tx99_set_txpower = ar9003_hw_tx99_set_txpower;
1978
1979 ar9003_hw_set_nf_limits(ah);
1980 ar9003_hw_set_radar_conf(ah);
1981 memcpy(ah->nf_regs, ar9300_cca_regs, sizeof(ah->nf_regs));
1982 }
1983
1984 /*
1985 * Baseband Watchdog signatures:
1986 *
1987 * 0x04000539: BB hang when operating in HT40 DFS Channel.
1988 * Full chip reset is not required, but a recovery
1989 * mechanism is needed.
1990 *
1991 * 0x1300000a: Related to CAC deafness.
1992 * Chip reset is not required.
1993 *
1994 * 0x0400000a: Related to CAC deafness.
1995 * Full chip reset is required.
1996 *
1997 * 0x04000b09: RX state machine gets into an illegal state
1998 * when a packet with unsupported rate is received.
1999 * Full chip reset is required and PHY_RESTART has
2000 * to be disabled.
2001 *
2002 * 0x04000409: Packet stuck on receive.
2003 * Full chip reset is required for all chips except
2004 * AR9340, AR9531 and AR9561.
2005 */
2006
2007 /*
2008 * ar9003_hw_bb_watchdog_check(): Returns true if a chip reset is required.
2009 */
2010 bool ar9003_hw_bb_watchdog_check(struct ath_hw *ah)
2011 {
2012 u32 val;
2013
2014 switch(ah->bb_watchdog_last_status) {
2015 case 0x04000539:
2016 val = REG_READ(ah, AR_PHY_RADAR_0);
2017 val &= (~AR_PHY_RADAR_0_FIRPWR);
2018 val |= SM(0x7f, AR_PHY_RADAR_0_FIRPWR);
2019 REG_WRITE(ah, AR_PHY_RADAR_0, val);
2020 udelay(1);
2021 val = REG_READ(ah, AR_PHY_RADAR_0);
2022 val &= ~AR_PHY_RADAR_0_FIRPWR;
2023 val |= SM(AR9300_DFS_FIRPWR, AR_PHY_RADAR_0_FIRPWR);
2024 REG_WRITE(ah, AR_PHY_RADAR_0, val);
2025
2026 return false;
2027 case 0x1300000a:
2028 return false;
2029 case 0x0400000a:
2030 case 0x04000b09:
2031 return true;
2032 case 0x04000409:
2033 if (AR_SREV_9340(ah) || AR_SREV_9531(ah) || AR_SREV_9561(ah))
2034 return false;
2035 else
2036 return true;
2037 default:
2038 /*
2039 * For any other unknown signatures, do a
2040 * full chip reset.
2041 */
2042 return true;
2043 }
2044 }
2045 EXPORT_SYMBOL(ar9003_hw_bb_watchdog_check);
2046
2047 void ar9003_hw_bb_watchdog_config(struct ath_hw *ah)
2048 {
2049 struct ath_common *common = ath9k_hw_common(ah);
2050 u32 idle_tmo_ms = ah->bb_watchdog_timeout_ms;
2051 u32 val, idle_count;
2052
2053 if (!idle_tmo_ms) {
2054 /* disable IRQ, disable chip-reset for BB panic */
2055 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
2056 REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) &
2057 ~(AR_PHY_WATCHDOG_RST_ENABLE |
2058 AR_PHY_WATCHDOG_IRQ_ENABLE));
2059
2060 /* disable watchdog in non-IDLE mode, disable in IDLE mode */
2061 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
2062 REG_READ(ah, AR_PHY_WATCHDOG_CTL_1) &
2063 ~(AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
2064 AR_PHY_WATCHDOG_IDLE_ENABLE));
2065
2066 ath_dbg(common, RESET, "Disabled BB Watchdog\n");
2067 return;
2068 }
2069
2070 /* enable IRQ, disable chip-reset for BB watchdog */
2071 val = REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) & AR_PHY_WATCHDOG_CNTL2_MASK;
2072 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
2073 (val | AR_PHY_WATCHDOG_IRQ_ENABLE) &
2074 ~AR_PHY_WATCHDOG_RST_ENABLE);
2075
2076 /* bound limit to 10 secs */
2077 if (idle_tmo_ms > 10000)
2078 idle_tmo_ms = 10000;
2079
2080 /*
2081 * The time unit for watchdog event is 2^15 44/88MHz cycles.
2082 *
2083 * For HT20 we have a time unit of 2^15/44 MHz = .74 ms per tick
2084 * For HT40 we have a time unit of 2^15/88 MHz = .37 ms per tick
2085 *
2086 * Given we use fast clock now in 5 GHz, these time units should
2087 * be common for both 2 GHz and 5 GHz.
2088 */
2089 idle_count = (100 * idle_tmo_ms) / 74;
2090 if (ah->curchan && IS_CHAN_HT40(ah->curchan))
2091 idle_count = (100 * idle_tmo_ms) / 37;
2092
2093 /*
2094 * enable watchdog in non-IDLE mode, disable in IDLE mode,
2095 * set idle time-out.
2096 */
2097 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
2098 AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
2099 AR_PHY_WATCHDOG_IDLE_MASK |
2100 (AR_PHY_WATCHDOG_NON_IDLE_MASK & (idle_count << 2)));
2101
2102 ath_dbg(common, RESET, "Enabled BB Watchdog timeout (%u ms)\n",
2103 idle_tmo_ms);
2104 }
2105
2106 void ar9003_hw_bb_watchdog_read(struct ath_hw *ah)
2107 {
2108 /*
2109 * we want to avoid printing in ISR context so we save the
2110 * watchdog status to be printed later in bottom half context.
2111 */
2112 ah->bb_watchdog_last_status = REG_READ(ah, AR_PHY_WATCHDOG_STATUS);
2113
2114 /*
2115 * the watchdog timer should reset on status read but to be sure
2116 * sure we write 0 to the watchdog status bit.
2117 */
2118 REG_WRITE(ah, AR_PHY_WATCHDOG_STATUS,
2119 ah->bb_watchdog_last_status & ~AR_PHY_WATCHDOG_STATUS_CLR);
2120 }
2121
2122 void ar9003_hw_bb_watchdog_dbg_info(struct ath_hw *ah)
2123 {
2124 struct ath_common *common = ath9k_hw_common(ah);
2125 u32 status;
2126
2127 if (likely(!(common->debug_mask & ATH_DBG_RESET)))
2128 return;
2129
2130 status = ah->bb_watchdog_last_status;
2131 ath_dbg(common, RESET,
2132 "\n==== BB update: BB status=0x%08x ====\n", status);
2133 ath_dbg(common, RESET,
2134 "** BB state: wd=%u det=%u rdar=%u rOFDM=%d rCCK=%u tOFDM=%u tCCK=%u agc=%u src=%u **\n",
2135 MS(status, AR_PHY_WATCHDOG_INFO),
2136 MS(status, AR_PHY_WATCHDOG_DET_HANG),
2137 MS(status, AR_PHY_WATCHDOG_RADAR_SM),
2138 MS(status, AR_PHY_WATCHDOG_RX_OFDM_SM),
2139 MS(status, AR_PHY_WATCHDOG_RX_CCK_SM),
2140 MS(status, AR_PHY_WATCHDOG_TX_OFDM_SM),
2141 MS(status, AR_PHY_WATCHDOG_TX_CCK_SM),
2142 MS(status, AR_PHY_WATCHDOG_AGC_SM),
2143 MS(status, AR_PHY_WATCHDOG_SRCH_SM));
2144
2145 ath_dbg(common, RESET, "** BB WD cntl: cntl1=0x%08x cntl2=0x%08x **\n",
2146 REG_READ(ah, AR_PHY_WATCHDOG_CTL_1),
2147 REG_READ(ah, AR_PHY_WATCHDOG_CTL_2));
2148 ath_dbg(common, RESET, "** BB mode: BB_gen_controls=0x%08x **\n",
2149 REG_READ(ah, AR_PHY_GEN_CTRL));
2150
2151 #define PCT(_field) (common->cc_survey._field * 100 / common->cc_survey.cycles)
2152 if (common->cc_survey.cycles)
2153 ath_dbg(common, RESET,
2154 "** BB busy times: rx_clear=%d%%, rx_frame=%d%%, tx_frame=%d%% **\n",
2155 PCT(rx_busy), PCT(rx_frame), PCT(tx_frame));
2156
2157 ath_dbg(common, RESET, "==== BB update: done ====\n\n");
2158 }
2159 EXPORT_SYMBOL(ar9003_hw_bb_watchdog_dbg_info);
2160
2161 void ar9003_hw_disable_phy_restart(struct ath_hw *ah)
2162 {
2163 u8 result;
2164 u32 val;
2165
2166 /* While receiving unsupported rate frame rx state machine
2167 * gets into a state 0xb and if phy_restart happens in that
2168 * state, BB would go hang. If RXSM is in 0xb state after
2169 * first bb panic, ensure to disable the phy_restart.
2170 */
2171 result = MS(ah->bb_watchdog_last_status, AR_PHY_WATCHDOG_RX_OFDM_SM);
2172
2173 if ((result == 0xb) || ah->bb_hang_rx_ofdm) {
2174 ah->bb_hang_rx_ofdm = true;
2175 val = REG_READ(ah, AR_PHY_RESTART);
2176 val &= ~AR_PHY_RESTART_ENA;
2177 REG_WRITE(ah, AR_PHY_RESTART, val);
2178 }
2179 }
2180 EXPORT_SYMBOL(ar9003_hw_disable_phy_restart);
Linux with added FPC-III support