drivers/net/wireless/ath/ath9k/ar9003_phy.c

   1 /*
   2  * Copyright (c) 2010-2011 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "hw.h"
  18 #include "ar9003_phy.h"
  19
  20 static const int firstep_table[] =
  21 /* level:  0   1   2   3   4   5   6   7   8  */
  22         { -4, -2,  0,  2,  4,  6,  8, 10, 12 }; /* lvl 0-8, default 2 */
  23
  24 static const int cycpwrThr1_table[] =
  25 /* level:  0   1   2   3   4   5   6   7   8  */
  26         { -6, -4, -2,  0,  2,  4,  6,  8 };     /* lvl 0-7, default 3 */
  27
  28 /*
  29  * register values to turn OFDM weak signal detection OFF
  30  */
  31 static const int m1ThreshLow_off = 127;
  32 static const int m2ThreshLow_off = 127;
  33 static const int m1Thresh_off = 127;
  34 static const int m2Thresh_off = 127;
  35 static const int m2CountThr_off =  31;
  36 static const int m2CountThrLow_off =  63;
  37 static const int m1ThreshLowExt_off = 127;
  38 static const int m2ThreshLowExt_off = 127;
  39 static const int m1ThreshExt_off = 127;
  40 static const int m2ThreshExt_off = 127;
  41
  42 /**
  43  * ar9003_hw_set_channel - set channel on single-chip device
  44  * @ah: atheros hardware structure
  45  * @chan:
  46  *
  47  * This is the function to change channel on single-chip devices, that is
  48  * all devices after ar9280.
  49  *
  50  * This function takes the channel value in MHz and sets
  51  * hardware channel value. Assumes writes have been enabled to analog bus.
  52  *
  53  * Actual Expression,
  54  *
  55  * For 2GHz channel,
  56  * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
  57  * (freq_ref = 40MHz)
  58  *
  59  * For 5GHz channel,
  60  * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10)
  61  * (freq_ref = 40MHz/(24>>amodeRefSel))
  62  *
  63  * For 5GHz channels which are 5MHz spaced,
  64  * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
  65  * (freq_ref = 40MHz)
  66  */
  67 static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
  68 {
  69         u16 bMode, fracMode = 0, aModeRefSel = 0;
  70         u32 freq, channelSel = 0, reg32 = 0;
  71         struct chan_centers centers;
  72         int loadSynthChannel;
  73
  74         ath9k_hw_get_channel_centers(ah, chan, &centers);
  75         freq = centers.synth_center;
  76
  77         if (freq < 4800) {     /* 2 GHz, fractional mode */
  78                 if (AR_SREV_9485(ah)) {
  79                         u32 chan_frac;
  80
  81                         /*
  82                          * freq_ref = 40 / (refdiva >> amoderefsel); where refdiva=1 and amoderefsel=0
  83                          * ndiv = ((chan_mhz * 4) / 3) / freq_ref;
  84                          * chansel = int(ndiv), chanfrac = (ndiv - chansel) * 0x20000
  85                          */
  86                         channelSel = (freq * 4) / 120;
  87                         chan_frac = (((freq * 4) % 120) * 0x20000) / 120;
  88                         channelSel = (channelSel << 17) | chan_frac;
  89                 } else if (AR_SREV_9340(ah)) {
  90                         if (ah->is_clk_25mhz) {
  91                                 u32 chan_frac;
  92
  93                                 channelSel = (freq * 2) / 75;
  94                                 chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
  95                                 channelSel = (channelSel << 17) | chan_frac;
  96                         } else
  97                                 channelSel = CHANSEL_2G(freq) >> 1;
  98                 } else
  99                         channelSel = CHANSEL_2G(freq);
 100                 /* Set to 2G mode */
 101                 bMode = 1;
 102         } else {
 103                 if (AR_SREV_9340(ah) && ah->is_clk_25mhz) {
 104                         u32 chan_frac;
 105
 106                         channelSel = (freq * 2) / 75;
 107                         chan_frac = ((freq % 75) * 0x20000) / 75;
 108                         channelSel = (channelSel << 17) | chan_frac;
 109                 } else {
 110                         channelSel = CHANSEL_5G(freq);
 111                         /* Doubler is ON, so, divide channelSel by 2. */
 112                         channelSel >>= 1;
 113                 }
 114                 /* Set to 5G mode */
 115                 bMode = 0;
 116         }
 117
 118         /* Enable fractional mode for all channels */
 119         fracMode = 1;
 120         aModeRefSel = 0;
 121         loadSynthChannel = 0;
 122
 123         reg32 = (bMode << 29);
 124         REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
 125
 126         /* Enable Long shift Select for Synthesizer */
 127         REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_SYNTH4,
 128                       AR_PHY_SYNTH4_LONG_SHIFT_SELECT, 1);
 129
 130         /* Program Synth. setting */
 131         reg32 = (channelSel << 2) | (fracMode << 30) |
 132                 (aModeRefSel << 28) | (loadSynthChannel << 31);
 133         REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
 134
 135         /* Toggle Load Synth channel bit */
 136         loadSynthChannel = 1;
 137         reg32 = (channelSel << 2) | (fracMode << 30) |
 138                 (aModeRefSel << 28) | (loadSynthChannel << 31);
 139         REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32);
 140
 141         ah->curchan = chan;
 142         ah->curchan_rad_index = -1;
 143
 144         return 0;
 145 }
 146
 147 /**
 148  * ar9003_hw_spur_mitigate_mrc_cck - convert baseband spur frequency
 149  * @ah: atheros hardware structure
 150  * @chan:
 151  *
 152  * For single-chip solutions. Converts to baseband spur frequency given the
 153  * input channel frequency and compute register settings below.
 154  *
 155  * Spur mitigation for MRC CCK
 156  */
 157 static void ar9003_hw_spur_mitigate_mrc_cck(struct ath_hw *ah,
 158                                             struct ath9k_channel *chan)
 159 {
 160         static const u32 spur_freq[4] = { 2420, 2440, 2464, 2480 };
 161         int cur_bb_spur, negative = 0, cck_spur_freq;
 162         int i;
 163         int range, max_spur_cnts, synth_freq;
 164         u8 *spur_fbin_ptr = NULL;
 165
 166         /*
 167          * Need to verify range +/- 10 MHz in control channel, otherwise spur
 168          * is out-of-band and can be ignored.
 169          */
 170
 171         if (AR_SREV_9485(ah) || AR_SREV_9340(ah)) {
 172                 spur_fbin_ptr = ar9003_get_spur_chan_ptr(ah,
 173                                                          IS_CHAN_2GHZ(chan));
 174                 if (spur_fbin_ptr[0] == 0) /* No spur */
 175                         return;
 176                 max_spur_cnts = 5;
 177                 if (IS_CHAN_HT40(chan)) {
 178                         range = 19;
 179                         if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
 180                                            AR_PHY_GC_DYN2040_PRI_CH) == 0)
 181                                 synth_freq = chan->channel + 10;
 182                         else
 183                                 synth_freq = chan->channel - 10;
 184                 } else {
 185                         range = 10;
 186                         synth_freq = chan->channel;
 187                 }
 188         } else {
 189                 range = 10;
 190                 max_spur_cnts = 4;
 191                 synth_freq = chan->channel;
 192         }
 193
 194         for (i = 0; i < max_spur_cnts; i++) {
 195                 negative = 0;
 196                 if (AR_SREV_9485(ah) || AR_SREV_9340(ah))
 197                         cur_bb_spur = FBIN2FREQ(spur_fbin_ptr[i],
 198                                         IS_CHAN_2GHZ(chan)) - synth_freq;
 199                 else
 200                         cur_bb_spur = spur_freq[i] - synth_freq;
 201
 202                 if (cur_bb_spur < 0) {
 203                         negative = 1;
 204                         cur_bb_spur = -cur_bb_spur;
 205                 }
 206                 if (cur_bb_spur < range) {
 207                         cck_spur_freq = (int)((cur_bb_spur << 19) / 11);
 208
 209                         if (negative == 1)
 210                                 cck_spur_freq = -cck_spur_freq;
 211
 212                         cck_spur_freq = cck_spur_freq & 0xfffff;
 213
 214                         REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
 215                                       AR_PHY_AGC_CONTROL_YCOK_MAX, 0x7);
 216                         REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
 217                                       AR_PHY_CCK_SPUR_MIT_SPUR_RSSI_THR, 0x7f);
 218                         REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
 219                                       AR_PHY_CCK_SPUR_MIT_SPUR_FILTER_TYPE,
 220                                       0x2);
 221                         REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
 222                                       AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT,
 223                                       0x1);
 224                         REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
 225                                       AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ,
 226                                       cck_spur_freq);
 227
 228                         return;
 229                 }
 230         }
 231
 232         REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
 233                       AR_PHY_AGC_CONTROL_YCOK_MAX, 0x5);
 234         REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
 235                       AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT, 0x0);
 236         REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
 237                       AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ, 0x0);
 238 }
 239
 240 /* Clean all spur register fields */
 241 static void ar9003_hw_spur_ofdm_clear(struct ath_hw *ah)
 242 {
 243         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 244                       AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0);
 245         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 246                       AR_PHY_TIMING11_SPUR_FREQ_SD, 0);
 247         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 248                       AR_PHY_TIMING11_SPUR_DELTA_PHASE, 0);
 249         REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
 250                       AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, 0);
 251         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 252                       AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0);
 253         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 254                       AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0);
 255         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 256                       AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0);
 257         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 258                       AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 0);
 259         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 260                       AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 0);
 261
 262         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 263                       AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0);
 264         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 265                       AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0);
 266         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 267                       AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0);
 268         REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
 269                       AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, 0);
 270         REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
 271                       AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, 0);
 272         REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
 273                       AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, 0);
 274         REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
 275                       AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0);
 276         REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
 277                       AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0);
 278         REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
 279                       AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0);
 280         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 281                       AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0);
 282 }
 283
 284 static void ar9003_hw_spur_ofdm(struct ath_hw *ah,
 285                                 int freq_offset,
 286                                 int spur_freq_sd,
 287                                 int spur_delta_phase,
 288                                 int spur_subchannel_sd)
 289 {
 290         int mask_index = 0;
 291
 292         /* OFDM Spur mitigation */
 293         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 294                  AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0x1);
 295         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 296                       AR_PHY_TIMING11_SPUR_FREQ_SD, spur_freq_sd);
 297         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 298                       AR_PHY_TIMING11_SPUR_DELTA_PHASE, spur_delta_phase);
 299         REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
 300                       AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, spur_subchannel_sd);
 301         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 302                       AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0x1);
 303         REG_RMW_FIELD(ah, AR_PHY_TIMING11,
 304                       AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0x1);
 305         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 306                       AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0x1);
 307         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 308                       AR_PHY_SPUR_REG_SPUR_RSSI_THRESH, 34);
 309         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 310                       AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 1);
 311
 312         if (REG_READ_FIELD(ah, AR_PHY_MODE,
 313                            AR_PHY_MODE_DYNAMIC) == 0x1)
 314                 REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 315                               AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 1);
 316
 317         mask_index = (freq_offset << 4) / 5;
 318         if (mask_index < 0)
 319                 mask_index = mask_index - 1;
 320
 321         mask_index = mask_index & 0x7f;
 322
 323         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 324                       AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0x1);
 325         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 326                       AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0x1);
 327         REG_RMW_FIELD(ah, AR_PHY_TIMING4,
 328                       AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0x1);
 329         REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
 330                       AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, mask_index);
 331         REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
 332                       AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, mask_index);
 333         REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
 334                       AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, mask_index);
 335         REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
 336                       AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0xc);
 337         REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
 338                       AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0xc);
 339         REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A,
 340                       AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0xa0);
 341         REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
 342                       AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0xff);
 343 }
 344
 345 static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
 346                                      struct ath9k_channel *chan,
 347                                      int freq_offset)
 348 {
 349         int spur_freq_sd = 0;
 350         int spur_subchannel_sd = 0;
 351         int spur_delta_phase = 0;
 352
 353         if (IS_CHAN_HT40(chan)) {
 354                 if (freq_offset < 0) {
 355                         if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
 356                                            AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
 357                                 spur_subchannel_sd = 1;
 358                         else
 359                                 spur_subchannel_sd = 0;
 360
 361                         spur_freq_sd = ((freq_offset + 10) << 9) / 11;
 362
 363                 } else {
 364                         if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
 365                             AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
 366                                 spur_subchannel_sd = 0;
 367                         else
 368                                 spur_subchannel_sd = 1;
 369
 370                         spur_freq_sd = ((freq_offset - 10) << 9) / 11;
 371
 372                 }
 373
 374                 spur_delta_phase = (freq_offset << 17) / 5;
 375
 376         } else {
 377                 spur_subchannel_sd = 0;
 378                 spur_freq_sd = (freq_offset << 9) /11;
 379                 spur_delta_phase = (freq_offset << 18) / 5;
 380         }
 381
 382         spur_freq_sd = spur_freq_sd & 0x3ff;
 383         spur_delta_phase = spur_delta_phase & 0xfffff;
 384
 385         ar9003_hw_spur_ofdm(ah,
 386                             freq_offset,
 387                             spur_freq_sd,
 388                             spur_delta_phase,
 389                             spur_subchannel_sd);
 390 }
 391
 392 /* Spur mitigation for OFDM */
 393 static void ar9003_hw_spur_mitigate_ofdm(struct ath_hw *ah,
 394                                          struct ath9k_channel *chan)
 395 {
 396         int synth_freq;
 397         int range = 10;
 398         int freq_offset = 0;
 399         int mode;
 400         u8* spurChansPtr;
 401         unsigned int i;
 402         struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
 403
 404         if (IS_CHAN_5GHZ(chan)) {
 405                 spurChansPtr = &(eep->modalHeader5G.spurChans[0]);
 406                 mode = 0;
 407         }
 408         else {
 409                 spurChansPtr = &(eep->modalHeader2G.spurChans[0]);
 410                 mode = 1;
 411         }
 412
 413         if (spurChansPtr[0] == 0)
 414                 return; /* No spur in the mode */
 415
 416         if (IS_CHAN_HT40(chan)) {
 417                 range = 19;
 418                 if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
 419                                    AR_PHY_GC_DYN2040_PRI_CH) == 0x0)
 420                         synth_freq = chan->channel - 10;
 421                 else
 422                         synth_freq = chan->channel + 10;
 423         } else {
 424                 range = 10;
 425                 synth_freq = chan->channel;
 426         }
 427
 428         ar9003_hw_spur_ofdm_clear(ah);
 429
 430         for (i = 0; i < AR_EEPROM_MODAL_SPURS && spurChansPtr[i]; i++) {
 431                 freq_offset = FBIN2FREQ(spurChansPtr[i], mode) - synth_freq;
 432                 if (abs(freq_offset) < range) {
 433                         ar9003_hw_spur_ofdm_work(ah, chan, freq_offset);
 434                         break;
 435                 }
 436         }
 437 }
 438
 439 static void ar9003_hw_spur_mitigate(struct ath_hw *ah,
 440                                     struct ath9k_channel *chan)
 441 {
 442         ar9003_hw_spur_mitigate_mrc_cck(ah, chan);
 443         ar9003_hw_spur_mitigate_ofdm(ah, chan);
 444 }
 445
 446 static u32 ar9003_hw_compute_pll_control(struct ath_hw *ah,
 447                                          struct ath9k_channel *chan)
 448 {
 449         u32 pll;
 450
 451         pll = SM(0x5, AR_RTC_9300_PLL_REFDIV);
 452
 453         if (chan && IS_CHAN_HALF_RATE(chan))
 454                 pll |= SM(0x1, AR_RTC_9300_PLL_CLKSEL);
 455         else if (chan && IS_CHAN_QUARTER_RATE(chan))
 456                 pll |= SM(0x2, AR_RTC_9300_PLL_CLKSEL);
 457
 458         pll |= SM(0x2c, AR_RTC_9300_PLL_DIV);
 459
 460         return pll;
 461 }
 462
 463 static void ar9003_hw_set_channel_regs(struct ath_hw *ah,
 464                                        struct ath9k_channel *chan)
 465 {
 466         u32 phymode;
 467         u32 enableDacFifo = 0;
 468
 469         enableDacFifo =
 470                 (REG_READ(ah, AR_PHY_GEN_CTRL) & AR_PHY_GC_ENABLE_DAC_FIFO);
 471
 472         /* Enable 11n HT, 20 MHz */
 473         phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 | AR_PHY_GC_WALSH |
 474                   AR_PHY_GC_SHORT_GI_40 | enableDacFifo;
 475
 476         /* Configure baseband for dynamic 20/40 operation */
 477         if (IS_CHAN_HT40(chan)) {
 478                 phymode |= AR_PHY_GC_DYN2040_EN;
 479                 /* Configure control (primary) channel at +-10MHz */
 480                 if ((chan->chanmode == CHANNEL_A_HT40PLUS) ||
 481                     (chan->chanmode == CHANNEL_G_HT40PLUS))
 482                         phymode |= AR_PHY_GC_DYN2040_PRI_CH;
 483
 484         }
 485
 486         /* make sure we preserve INI settings */
 487         phymode |= REG_READ(ah, AR_PHY_GEN_CTRL);
 488         /* turn off Green Field detection for STA for now */
 489         phymode &= ~AR_PHY_GC_GF_DETECT_EN;
 490
 491         REG_WRITE(ah, AR_PHY_GEN_CTRL, phymode);
 492
 493         /* Configure MAC for 20/40 operation */
 494         ath9k_hw_set11nmac2040(ah);
 495
 496         /* global transmit timeout (25 TUs default)*/
 497         REG_WRITE(ah, AR_GTXTO, 25 << AR_GTXTO_TIMEOUT_LIMIT_S);
 498         /* carrier sense timeout */
 499         REG_WRITE(ah, AR_CST, 0xF << AR_CST_TIMEOUT_LIMIT_S);
 500 }
 501
 502 static void ar9003_hw_init_bb(struct ath_hw *ah,
 503                               struct ath9k_channel *chan)
 504 {
 505         u32 synthDelay;
 506
 507         /*
 508          * Wait for the frequency synth to settle (synth goes on
 509          * via AR_PHY_ACTIVE_EN).  Read the phy active delay register.
 510          * Value is in 100ns increments.
 511          */
 512         synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
 513         if (IS_CHAN_B(chan))
 514                 synthDelay = (4 * synthDelay) / 22;
 515         else
 516                 synthDelay /= 10;
 517
 518         /* Activate the PHY (includes baseband activate + synthesizer on) */
 519         REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
 520
 521         /*
 522          * There is an issue if the AP starts the calibration before
 523          * the base band timeout completes.  This could result in the
 524          * rx_clear false triggering.  As a workaround we add delay an
 525          * extra BASE_ACTIVATE_DELAY usecs to ensure this condition
 526          * does not happen.
 527          */
 528         udelay(synthDelay + BASE_ACTIVATE_DELAY);
 529 }
 530
 531 void ar9003_hw_set_chain_masks(struct ath_hw *ah, u8 rx, u8 tx)
 532 {
 533         switch (rx) {
 534         case 0x5:
 535                 REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
 536                             AR_PHY_SWAP_ALT_CHAIN);
 537         case 0x3:
 538         case 0x1:
 539         case 0x2:
 540         case 0x7:
 541                 REG_WRITE(ah, AR_PHY_RX_CHAINMASK, rx);
 542                 REG_WRITE(ah, AR_PHY_CAL_CHAINMASK, rx);
 543                 break;
 544         default:
 545                 break;
 546         }
 547
 548         if ((ah->caps.hw_caps & ATH9K_HW_CAP_APM) && (tx == 0x7))
 549                 REG_WRITE(ah, AR_SELFGEN_MASK, 0x3);
 550         else
 551                 REG_WRITE(ah, AR_SELFGEN_MASK, tx);
 552
 553         if (tx == 0x5) {
 554                 REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
 555                             AR_PHY_SWAP_ALT_CHAIN);
 556         }
 557 }
 558
 559 /*
 560  * Override INI values with chip specific configuration.
 561  */
 562 static void ar9003_hw_override_ini(struct ath_hw *ah)
 563 {
 564         u32 val;
 565
 566         /*
 567          * Set the RX_ABORT and RX_DIS and clear it only after
 568          * RXE is set for MAC. This prevents frames with
 569          * corrupted descriptor status.
 570          */
 571         REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
 572
 573         /*
 574          * For AR9280 and above, there is a new feature that allows
 575          * Multicast search based on both MAC Address and Key ID. By default,
 576          * this feature is enabled. But since the driver is not using this
 577          * feature, we switch it off; otherwise multicast search based on
 578          * MAC addr only will fail.
 579          */
 580         val = REG_READ(ah, AR_PCU_MISC_MODE2) & (~AR_ADHOC_MCAST_KEYID_ENABLE);
 581         REG_WRITE(ah, AR_PCU_MISC_MODE2,
 582                   val | AR_AGG_WEP_ENABLE_FIX | AR_AGG_WEP_ENABLE);
 583 }
 584
 585 static void ar9003_hw_prog_ini(struct ath_hw *ah,
 586                                struct ar5416IniArray *iniArr,
 587                                int column)
 588 {
 589         unsigned int i, regWrites = 0;
 590
 591         /* New INI format: Array may be undefined (pre, core, post arrays) */
 592         if (!iniArr->ia_array)
 593                 return;
 594
 595         /*
 596          * New INI format: Pre, core, and post arrays for a given subsystem
 597          * may be modal (> 2 columns) or non-modal (2 columns). Determine if
 598          * the array is non-modal and force the column to 1.
 599          */
 600         if (column >= iniArr->ia_columns)
 601                 column = 1;
 602
 603         for (i = 0; i < iniArr->ia_rows; i++) {
 604                 u32 reg = INI_RA(iniArr, i, 0);
 605                 u32 val = INI_RA(iniArr, i, column);
 606
 607                 REG_WRITE(ah, reg, val);
 608
 609                 DO_DELAY(regWrites);
 610         }
 611 }
 612
 613 static int ar9003_hw_process_ini(struct ath_hw *ah,
 614                                  struct ath9k_channel *chan)
 615 {
 616         struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 617         unsigned int regWrites = 0, i;
 618         struct ieee80211_channel *channel = chan->chan;
 619         u32 modesIndex;
 620
 621         switch (chan->chanmode) {
 622         case CHANNEL_A:
 623         case CHANNEL_A_HT20:
 624                 modesIndex = 1;
 625                 break;
 626         case CHANNEL_A_HT40PLUS:
 627         case CHANNEL_A_HT40MINUS:
 628                 modesIndex = 2;
 629                 break;
 630         case CHANNEL_G:
 631         case CHANNEL_G_HT20:
 632         case CHANNEL_B:
 633                 modesIndex = 4;
 634                 break;
 635         case CHANNEL_G_HT40PLUS:
 636         case CHANNEL_G_HT40MINUS:
 637                 modesIndex = 3;
 638                 break;
 639
 640         default:
 641                 return -EINVAL;
 642         }
 643
 644         for (i = 0; i < ATH_INI_NUM_SPLIT; i++) {
 645                 ar9003_hw_prog_ini(ah, &ah->iniSOC[i], modesIndex);
 646                 ar9003_hw_prog_ini(ah, &ah->iniMac[i], modesIndex);
 647                 ar9003_hw_prog_ini(ah, &ah->iniBB[i], modesIndex);
 648                 ar9003_hw_prog_ini(ah, &ah->iniRadio[i], modesIndex);
 649         }
 650
 651         REG_WRITE_ARRAY(&ah->iniModesRxGain, 1, regWrites);
 652         REG_WRITE_ARRAY(&ah->iniModesTxGain, modesIndex, regWrites);
 653
 654         /*
 655          * For 5GHz channels requiring Fast Clock, apply
 656          * different modal values.
 657          */
 658         if (IS_CHAN_A_FAST_CLOCK(ah, chan))
 659                 REG_WRITE_ARRAY(&ah->iniModesAdditional,
 660                                 modesIndex, regWrites);
 661
 662         if (AR_SREV_9340(ah) && !ah->is_clk_25mhz)
 663                 REG_WRITE_ARRAY(&ah->iniModesAdditional_40M, 1, regWrites);
 664
 665         ar9003_hw_override_ini(ah);
 666         ar9003_hw_set_channel_regs(ah, chan);
 667         ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
 668
 669         /* Set TX power */
 670         ah->eep_ops->set_txpower(ah, chan,
 671                                  ath9k_regd_get_ctl(regulatory, chan),
 672                                  channel->max_antenna_gain * 2,
 673                                  channel->max_power * 2,
 674                                  min((u32) MAX_RATE_POWER,
 675                                  (u32) regulatory->power_limit), false);
 676
 677         return 0;
 678 }
 679
 680 static void ar9003_hw_set_rfmode(struct ath_hw *ah,
 681                                  struct ath9k_channel *chan)
 682 {
 683         u32 rfMode = 0;
 684
 685         if (chan == NULL)
 686                 return;
 687
 688         rfMode |= (IS_CHAN_B(chan) || IS_CHAN_G(chan))
 689                 ? AR_PHY_MODE_DYNAMIC : AR_PHY_MODE_OFDM;
 690
 691         if (IS_CHAN_A_FAST_CLOCK(ah, chan))
 692                 rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE);
 693
 694         REG_WRITE(ah, AR_PHY_MODE, rfMode);
 695 }
 696
 697 static void ar9003_hw_mark_phy_inactive(struct ath_hw *ah)
 698 {
 699         REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
 700 }
 701
 702 static void ar9003_hw_set_delta_slope(struct ath_hw *ah,
 703                                       struct ath9k_channel *chan)
 704 {
 705         u32 coef_scaled, ds_coef_exp, ds_coef_man;
 706         u32 clockMhzScaled = 0x64000000;
 707         struct chan_centers centers;
 708
 709         /*
 710          * half and quarter rate can divide the scaled clock by 2 or 4
 711          * scale for selected channel bandwidth
 712          */
 713         if (IS_CHAN_HALF_RATE(chan))
 714                 clockMhzScaled = clockMhzScaled >> 1;
 715         else if (IS_CHAN_QUARTER_RATE(chan))
 716                 clockMhzScaled = clockMhzScaled >> 2;
 717
 718         /*
 719          * ALGO -> coef = 1e8/fcarrier*fclock/40;
 720          * scaled coef to provide precision for this floating calculation
 721          */
 722         ath9k_hw_get_channel_centers(ah, chan, &centers);
 723         coef_scaled = clockMhzScaled / centers.synth_center;
 724
 725         ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
 726                                       &ds_coef_exp);
 727
 728         REG_RMW_FIELD(ah, AR_PHY_TIMING3,
 729                       AR_PHY_TIMING3_DSC_MAN, ds_coef_man);
 730         REG_RMW_FIELD(ah, AR_PHY_TIMING3,
 731                       AR_PHY_TIMING3_DSC_EXP, ds_coef_exp);
 732
 733         /*
 734          * For Short GI,
 735          * scaled coeff is 9/10 that of normal coeff
 736          */
 737         coef_scaled = (9 * coef_scaled) / 10;
 738
 739         ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man,
 740                                       &ds_coef_exp);
 741
 742         /* for short gi */
 743         REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
 744                       AR_PHY_SGI_DSC_MAN, ds_coef_man);
 745         REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA,
 746                       AR_PHY_SGI_DSC_EXP, ds_coef_exp);
 747 }
 748
 749 static bool ar9003_hw_rfbus_req(struct ath_hw *ah)
 750 {
 751         REG_WRITE(ah, AR_PHY_RFBUS_REQ, AR_PHY_RFBUS_REQ_EN);
 752         return ath9k_hw_wait(ah, AR_PHY_RFBUS_GRANT, AR_PHY_RFBUS_GRANT_EN,
 753                              AR_PHY_RFBUS_GRANT_EN, AH_WAIT_TIMEOUT);
 754 }
 755
 756 /*
 757  * Wait for the frequency synth to settle (synth goes on via PHY_ACTIVE_EN).
 758  * Read the phy active delay register. Value is in 100ns increments.
 759  */
 760 static void ar9003_hw_rfbus_done(struct ath_hw *ah)
 761 {
 762         u32 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY;
 763         if (IS_CHAN_B(ah->curchan))
 764                 synthDelay = (4 * synthDelay) / 22;
 765         else
 766                 synthDelay /= 10;
 767
 768         udelay(synthDelay + BASE_ACTIVATE_DELAY);
 769
 770         REG_WRITE(ah, AR_PHY_RFBUS_REQ, 0);
 771 }
 772
 773 static void ar9003_hw_set_diversity(struct ath_hw *ah, bool value)
 774 {
 775         u32 v = REG_READ(ah, AR_PHY_CCK_DETECT);
 776         if (value)
 777                 v |= AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
 778         else
 779                 v &= ~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
 780         REG_WRITE(ah, AR_PHY_CCK_DETECT, v);
 781 }
 782
 783 static bool ar9003_hw_ani_control(struct ath_hw *ah,
 784                                   enum ath9k_ani_cmd cmd, int param)
 785 {
 786         struct ath_common *common = ath9k_hw_common(ah);
 787         struct ath9k_channel *chan = ah->curchan;
 788         struct ar5416AniState *aniState = &chan->ani;
 789         s32 value, value2;
 790
 791         switch (cmd & ah->ani_function) {
 792         case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
 793                 /*
 794                  * on == 1 means ofdm weak signal detection is ON
 795                  * on == 1 is the default, for less noise immunity
 796                  *
 797                  * on == 0 means ofdm weak signal detection is OFF
 798                  * on == 0 means more noise imm
 799                  */
 800                 u32 on = param ? 1 : 0;
 801                 /*
 802                  * make register setting for default
 803                  * (weak sig detect ON) come from INI file
 804                  */
 805                 int m1ThreshLow = on ?
 806                         aniState->iniDef.m1ThreshLow : m1ThreshLow_off;
 807                 int m2ThreshLow = on ?
 808                         aniState->iniDef.m2ThreshLow : m2ThreshLow_off;
 809                 int m1Thresh = on ?
 810                         aniState->iniDef.m1Thresh : m1Thresh_off;
 811                 int m2Thresh = on ?
 812                         aniState->iniDef.m2Thresh : m2Thresh_off;
 813                 int m2CountThr = on ?
 814                         aniState->iniDef.m2CountThr : m2CountThr_off;
 815                 int m2CountThrLow = on ?
 816                         aniState->iniDef.m2CountThrLow : m2CountThrLow_off;
 817                 int m1ThreshLowExt = on ?
 818                         aniState->iniDef.m1ThreshLowExt : m1ThreshLowExt_off;
 819                 int m2ThreshLowExt = on ?
 820                         aniState->iniDef.m2ThreshLowExt : m2ThreshLowExt_off;
 821                 int m1ThreshExt = on ?
 822                         aniState->iniDef.m1ThreshExt : m1ThreshExt_off;
 823                 int m2ThreshExt = on ?
 824                         aniState->iniDef.m2ThreshExt : m2ThreshExt_off;
 825
 826                 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
 827                               AR_PHY_SFCORR_LOW_M1_THRESH_LOW,
 828                               m1ThreshLow);
 829                 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
 830                               AR_PHY_SFCORR_LOW_M2_THRESH_LOW,
 831                               m2ThreshLow);
 832                 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
 833                               AR_PHY_SFCORR_M1_THRESH, m1Thresh);
 834                 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
 835                               AR_PHY_SFCORR_M2_THRESH, m2Thresh);
 836                 REG_RMW_FIELD(ah, AR_PHY_SFCORR,
 837                               AR_PHY_SFCORR_M2COUNT_THR, m2CountThr);
 838                 REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
 839                               AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW,
 840                               m2CountThrLow);
 841
 842                 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
 843                               AR_PHY_SFCORR_EXT_M1_THRESH_LOW, m1ThreshLowExt);
 844                 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
 845                               AR_PHY_SFCORR_EXT_M2_THRESH_LOW, m2ThreshLowExt);
 846                 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
 847                               AR_PHY_SFCORR_EXT_M1_THRESH, m1ThreshExt);
 848                 REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
 849                               AR_PHY_SFCORR_EXT_M2_THRESH, m2ThreshExt);
 850
 851                 if (on)
 852                         REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
 853                                     AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
 854                 else
 855                         REG_CLR_BIT(ah, AR_PHY_SFCORR_LOW,
 856                                     AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
 857
 858                 if (!on != aniState->ofdmWeakSigDetectOff) {
 859                         ath_dbg(common, ATH_DBG_ANI,
 860                                 "** ch %d: ofdm weak signal: %s=>%s\n",
 861                                 chan->channel,
 862                                 !aniState->ofdmWeakSigDetectOff ?
 863                                 "on" : "off",
 864                                 on ? "on" : "off");
 865                         if (on)
 866                                 ah->stats.ast_ani_ofdmon++;
 867                         else
 868                                 ah->stats.ast_ani_ofdmoff++;
 869                         aniState->ofdmWeakSigDetectOff = !on;
 870                 }
 871                 break;
 872         }
 873         case ATH9K_ANI_FIRSTEP_LEVEL:{
 874                 u32 level = param;
 875
 876                 if (level >= ARRAY_SIZE(firstep_table)) {
 877                         ath_dbg(common, ATH_DBG_ANI,
 878                                 "ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n",
 879                                 level, ARRAY_SIZE(firstep_table));
 880                         return false;
 881                 }
 882
 883                 /*
 884                  * make register setting relative to default
 885                  * from INI file & cap value
 886                  */
 887                 value = firstep_table[level] -
 888                         firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
 889                         aniState->iniDef.firstep;
 890                 if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN)
 891                         value = ATH9K_SIG_FIRSTEP_SETTING_MIN;
 892                 if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX)
 893                         value = ATH9K_SIG_FIRSTEP_SETTING_MAX;
 894                 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
 895                               AR_PHY_FIND_SIG_FIRSTEP,
 896                               value);
 897                 /*
 898                  * we need to set first step low register too
 899                  * make register setting relative to default
 900                  * from INI file & cap value
 901                  */
 902                 value2 = firstep_table[level] -
 903                          firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
 904                          aniState->iniDef.firstepLow;
 905                 if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN)
 906                         value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN;
 907                 if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX)
 908                         value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX;
 909
 910                 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
 911                               AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW, value2);
 912
 913                 if (level != aniState->firstepLevel) {
 914                         ath_dbg(common, ATH_DBG_ANI,
 915                                 "** ch %d: level %d=>%d[def:%d] firstep[level]=%d ini=%d\n",
 916                                 chan->channel,
 917                                 aniState->firstepLevel,
 918                                 level,
 919                                 ATH9K_ANI_FIRSTEP_LVL_NEW,
 920                                 value,
 921                                 aniState->iniDef.firstep);
 922                         ath_dbg(common, ATH_DBG_ANI,
 923                                 "** ch %d: level %d=>%d[def:%d] firstep_low[level]=%d ini=%d\n",
 924                                 chan->channel,
 925                                 aniState->firstepLevel,
 926                                 level,
 927                                 ATH9K_ANI_FIRSTEP_LVL_NEW,
 928                                 value2,
 929                                 aniState->iniDef.firstepLow);
 930                         if (level > aniState->firstepLevel)
 931                                 ah->stats.ast_ani_stepup++;
 932                         else if (level < aniState->firstepLevel)
 933                                 ah->stats.ast_ani_stepdown++;
 934                         aniState->firstepLevel = level;
 935                 }
 936                 break;
 937         }
 938         case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
 939                 u32 level = param;
 940
 941                 if (level >= ARRAY_SIZE(cycpwrThr1_table)) {
 942                         ath_dbg(common, ATH_DBG_ANI,
 943                                 "ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n",
 944                                 level, ARRAY_SIZE(cycpwrThr1_table));
 945                         return false;
 946                 }
 947                 /*
 948                  * make register setting relative to default
 949                  * from INI file & cap value
 950                  */
 951                 value = cycpwrThr1_table[level] -
 952                         cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
 953                         aniState->iniDef.cycpwrThr1;
 954                 if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
 955                         value = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
 956                 if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
 957                         value = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
 958                 REG_RMW_FIELD(ah, AR_PHY_TIMING5,
 959                               AR_PHY_TIMING5_CYCPWR_THR1,
 960                               value);
 961
 962                 /*
 963                  * set AR_PHY_EXT_CCA for extension channel
 964                  * make register setting relative to default
 965                  * from INI file & cap value
 966                  */
 967                 value2 = cycpwrThr1_table[level] -
 968                          cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
 969                          aniState->iniDef.cycpwrThr1Ext;
 970                 if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
 971                         value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
 972                 if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
 973                         value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
 974                 REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
 975                               AR_PHY_EXT_CYCPWR_THR1, value2);
 976
 977                 if (level != aniState->spurImmunityLevel) {
 978                         ath_dbg(common, ATH_DBG_ANI,
 979                                 "** ch %d: level %d=>%d[def:%d] cycpwrThr1[level]=%d ini=%d\n",
 980                                 chan->channel,
 981                                 aniState->spurImmunityLevel,
 982                                 level,
 983                                 ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
 984                                 value,
 985                                 aniState->iniDef.cycpwrThr1);
 986                         ath_dbg(common, ATH_DBG_ANI,
 987                                 "** ch %d: level %d=>%d[def:%d] cycpwrThr1Ext[level]=%d ini=%d\n",
 988                                 chan->channel,
 989                                 aniState->spurImmunityLevel,
 990                                 level,
 991                                 ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
 992                                 value2,
 993                                 aniState->iniDef.cycpwrThr1Ext);
 994                         if (level > aniState->spurImmunityLevel)
 995                                 ah->stats.ast_ani_spurup++;
 996                         else if (level < aniState->spurImmunityLevel)
 997                                 ah->stats.ast_ani_spurdown++;
 998                         aniState->spurImmunityLevel = level;
 999                 }
1000                 break;
1001         }
1002         case ATH9K_ANI_MRC_CCK:{
1003                 /*
1004                  * is_on == 1 means MRC CCK ON (default, less noise imm)
1005                  * is_on == 0 means MRC CCK is OFF (more noise imm)
1006                  */
1007                 bool is_on = param ? 1 : 0;
1008                 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1009                               AR_PHY_MRC_CCK_ENABLE, is_on);
1010                 REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
1011                               AR_PHY_MRC_CCK_MUX_REG, is_on);
1012                 if (!is_on != aniState->mrcCCKOff) {
1013                         ath_dbg(common, ATH_DBG_ANI,
1014                                 "** ch %d: MRC CCK: %s=>%s\n",
1015                                 chan->channel,
1016                                 !aniState->mrcCCKOff ? "on" : "off",
1017                                 is_on ? "on" : "off");
1018                 if (is_on)
1019                         ah->stats.ast_ani_ccklow++;
1020                 else
1021                         ah->stats.ast_ani_cckhigh++;
1022                 aniState->mrcCCKOff = !is_on;
1023                 }
1024         break;
1025         }
1026         case ATH9K_ANI_PRESENT:
1027                 break;
1028         default:
1029                 ath_dbg(common, ATH_DBG_ANI, "invalid cmd %u\n", cmd);
1030                 return false;
1031         }
1032
1033         ath_dbg(common, ATH_DBG_ANI,
1034                 "ANI parameters: SI=%d, ofdmWS=%s FS=%d MRCcck=%s listenTime=%d ofdmErrs=%d cckErrs=%d\n",
1035                 aniState->spurImmunityLevel,
1036                 !aniState->ofdmWeakSigDetectOff ? "on" : "off",
1037                 aniState->firstepLevel,
1038                 !aniState->mrcCCKOff ? "on" : "off",
1039                 aniState->listenTime,
1040                 aniState->ofdmPhyErrCount,
1041                 aniState->cckPhyErrCount);
1042         return true;
1043 }
1044
1045 static void ar9003_hw_do_getnf(struct ath_hw *ah,
1046                               int16_t nfarray[NUM_NF_READINGS])
1047 {
1048 #define AR_PHY_CH_MINCCA_PWR    0x1FF00000
1049 #define AR_PHY_CH_MINCCA_PWR_S  20
1050 #define AR_PHY_CH_EXT_MINCCA_PWR 0x01FF0000
1051 #define AR_PHY_CH_EXT_MINCCA_PWR_S 16
1052
1053         int16_t nf;
1054         int i;
1055
1056         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1057                 if (ah->rxchainmask & BIT(i)) {
1058                         nf = MS(REG_READ(ah, ah->nf_regs[i]),
1059                                          AR_PHY_CH_MINCCA_PWR);
1060                         nfarray[i] = sign_extend32(nf, 8);
1061
1062                         if (IS_CHAN_HT40(ah->curchan)) {
1063                                 u8 ext_idx = AR9300_MAX_CHAINS + i;
1064
1065                                 nf = MS(REG_READ(ah, ah->nf_regs[ext_idx]),
1066                                                  AR_PHY_CH_EXT_MINCCA_PWR);
1067                                 nfarray[ext_idx] = sign_extend32(nf, 8);
1068                         }
1069                 }
1070         }
1071 }
1072
1073 static void ar9003_hw_set_nf_limits(struct ath_hw *ah)
1074 {
1075         ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ;
1076         ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_2GHZ;
1077         ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9300_2GHZ;
1078         ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_5GHZ;
1079         ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_5GHZ;
1080         ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9300_5GHZ;
1081 }
1082
1083 /*
1084  * Initialize the ANI register values with default (ini) values.
1085  * This routine is called during a (full) hardware reset after
1086  * all the registers are initialised from the INI.
1087  */
1088 static void ar9003_hw_ani_cache_ini_regs(struct ath_hw *ah)
1089 {
1090         struct ar5416AniState *aniState;
1091         struct ath_common *common = ath9k_hw_common(ah);
1092         struct ath9k_channel *chan = ah->curchan;
1093         struct ath9k_ani_default *iniDef;
1094         u32 val;
1095
1096         aniState = &ah->curchan->ani;
1097         iniDef = &aniState->iniDef;
1098
1099         ath_dbg(common, ATH_DBG_ANI,
1100                 "ver %d.%d opmode %u chan %d Mhz/0x%x\n",
1101                 ah->hw_version.macVersion,
1102                 ah->hw_version.macRev,
1103                 ah->opmode,
1104                 chan->channel,
1105                 chan->channelFlags);
1106
1107         val = REG_READ(ah, AR_PHY_SFCORR);
1108         iniDef->m1Thresh = MS(val, AR_PHY_SFCORR_M1_THRESH);
1109         iniDef->m2Thresh = MS(val, AR_PHY_SFCORR_M2_THRESH);
1110         iniDef->m2CountThr = MS(val, AR_PHY_SFCORR_M2COUNT_THR);
1111
1112         val = REG_READ(ah, AR_PHY_SFCORR_LOW);
1113         iniDef->m1ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M1_THRESH_LOW);
1114         iniDef->m2ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M2_THRESH_LOW);
1115         iniDef->m2CountThrLow = MS(val, AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW);
1116
1117         val = REG_READ(ah, AR_PHY_SFCORR_EXT);
1118         iniDef->m1ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH);
1119         iniDef->m2ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH);
1120         iniDef->m1ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH_LOW);
1121         iniDef->m2ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH_LOW);
1122         iniDef->firstep = REG_READ_FIELD(ah,
1123                                          AR_PHY_FIND_SIG,
1124                                          AR_PHY_FIND_SIG_FIRSTEP);
1125         iniDef->firstepLow = REG_READ_FIELD(ah,
1126                                             AR_PHY_FIND_SIG_LOW,
1127                                             AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW);
1128         iniDef->cycpwrThr1 = REG_READ_FIELD(ah,
1129                                             AR_PHY_TIMING5,
1130                                             AR_PHY_TIMING5_CYCPWR_THR1);
1131         iniDef->cycpwrThr1Ext = REG_READ_FIELD(ah,
1132                                                AR_PHY_EXT_CCA,
1133                                                AR_PHY_EXT_CYCPWR_THR1);
1134
1135         /* these levels just got reset to defaults by the INI */
1136         aniState->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL_NEW;
1137         aniState->firstepLevel = ATH9K_ANI_FIRSTEP_LVL_NEW;
1138         aniState->ofdmWeakSigDetectOff = !ATH9K_ANI_USE_OFDM_WEAK_SIG;
1139         aniState->mrcCCKOff = !ATH9K_ANI_ENABLE_MRC_CCK;
1140 }
1141
1142 static void ar9003_hw_set_radar_params(struct ath_hw *ah,
1143                                        struct ath_hw_radar_conf *conf)
1144 {
1145         u32 radar_0 = 0, radar_1 = 0;
1146
1147         if (!conf) {
1148                 REG_CLR_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_ENA);
1149                 return;
1150         }
1151
1152         radar_0 |= AR_PHY_RADAR_0_ENA | AR_PHY_RADAR_0_FFT_ENA;
1153         radar_0 |= SM(conf->fir_power, AR_PHY_RADAR_0_FIRPWR);
1154         radar_0 |= SM(conf->radar_rssi, AR_PHY_RADAR_0_RRSSI);
1155         radar_0 |= SM(conf->pulse_height, AR_PHY_RADAR_0_HEIGHT);
1156         radar_0 |= SM(conf->pulse_rssi, AR_PHY_RADAR_0_PRSSI);
1157         radar_0 |= SM(conf->pulse_inband, AR_PHY_RADAR_0_INBAND);
1158
1159         radar_1 |= AR_PHY_RADAR_1_MAX_RRSSI;
1160         radar_1 |= AR_PHY_RADAR_1_BLOCK_CHECK;
1161         radar_1 |= SM(conf->pulse_maxlen, AR_PHY_RADAR_1_MAXLEN);
1162         radar_1 |= SM(conf->pulse_inband_step, AR_PHY_RADAR_1_RELSTEP_THRESH);
1163         radar_1 |= SM(conf->radar_inband, AR_PHY_RADAR_1_RELPWR_THRESH);
1164
1165         REG_WRITE(ah, AR_PHY_RADAR_0, radar_0);
1166         REG_WRITE(ah, AR_PHY_RADAR_1, radar_1);
1167         if (conf->ext_channel)
1168                 REG_SET_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1169         else
1170                 REG_CLR_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
1171 }
1172
1173 static void ar9003_hw_set_radar_conf(struct ath_hw *ah)
1174 {
1175         struct ath_hw_radar_conf *conf = &ah->radar_conf;
1176
1177         conf->fir_power = -28;
1178         conf->radar_rssi = 0;
1179         conf->pulse_height = 10;
1180         conf->pulse_rssi = 24;
1181         conf->pulse_inband = 8;
1182         conf->pulse_maxlen = 255;
1183         conf->pulse_inband_step = 12;
1184         conf->radar_inband = 8;
1185 }
1186
1187 static void ar9003_hw_antdiv_comb_conf_get(struct ath_hw *ah,
1188                                    struct ath_hw_antcomb_conf *antconf)
1189 {
1190         u32 regval;
1191
1192         regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1193         antconf->main_lna_conf = (regval & AR_PHY_9485_ANT_DIV_MAIN_LNACONF) >>
1194                                   AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S;
1195         antconf->alt_lna_conf = (regval & AR_PHY_9485_ANT_DIV_ALT_LNACONF) >>
1196                                  AR_PHY_9485_ANT_DIV_ALT_LNACONF_S;
1197         antconf->fast_div_bias = (regval & AR_PHY_9485_ANT_FAST_DIV_BIAS) >>
1198                                   AR_PHY_9485_ANT_FAST_DIV_BIAS_S;
1199         antconf->lna1_lna2_delta = -9;
1200         antconf->div_group = 2;
1201 }
1202
1203 static void ar9003_hw_antdiv_comb_conf_set(struct ath_hw *ah,
1204                                    struct ath_hw_antcomb_conf *antconf)
1205 {
1206         u32 regval;
1207
1208         regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
1209         regval &= ~(AR_PHY_9485_ANT_DIV_MAIN_LNACONF |
1210                     AR_PHY_9485_ANT_DIV_ALT_LNACONF |
1211                     AR_PHY_9485_ANT_FAST_DIV_BIAS |
1212                     AR_PHY_9485_ANT_DIV_MAIN_GAINTB |
1213                     AR_PHY_9485_ANT_DIV_ALT_GAINTB);
1214         regval |= ((antconf->main_lna_conf <<
1215                                         AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S)
1216                    & AR_PHY_9485_ANT_DIV_MAIN_LNACONF);
1217         regval |= ((antconf->alt_lna_conf << AR_PHY_9485_ANT_DIV_ALT_LNACONF_S)
1218                    & AR_PHY_9485_ANT_DIV_ALT_LNACONF);
1219         regval |= ((antconf->fast_div_bias << AR_PHY_9485_ANT_FAST_DIV_BIAS_S)
1220                    & AR_PHY_9485_ANT_FAST_DIV_BIAS);
1221         regval |= ((antconf->main_gaintb << AR_PHY_9485_ANT_DIV_MAIN_GAINTB_S)
1222                    & AR_PHY_9485_ANT_DIV_MAIN_GAINTB);
1223         regval |= ((antconf->alt_gaintb << AR_PHY_9485_ANT_DIV_ALT_GAINTB_S)
1224                    & AR_PHY_9485_ANT_DIV_ALT_GAINTB);
1225
1226         REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
1227 }
1228
1229 void ar9003_hw_attach_phy_ops(struct ath_hw *ah)
1230 {
1231         struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1232         struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1233         static const u32 ar9300_cca_regs[6] = {
1234                 AR_PHY_CCA_0,
1235                 AR_PHY_CCA_1,
1236                 AR_PHY_CCA_2,
1237                 AR_PHY_EXT_CCA,
1238                 AR_PHY_EXT_CCA_1,
1239                 AR_PHY_EXT_CCA_2,
1240         };
1241
1242         priv_ops->rf_set_freq = ar9003_hw_set_channel;
1243         priv_ops->spur_mitigate_freq = ar9003_hw_spur_mitigate;
1244         priv_ops->compute_pll_control = ar9003_hw_compute_pll_control;
1245         priv_ops->set_channel_regs = ar9003_hw_set_channel_regs;
1246         priv_ops->init_bb = ar9003_hw_init_bb;
1247         priv_ops->process_ini = ar9003_hw_process_ini;
1248         priv_ops->set_rfmode = ar9003_hw_set_rfmode;
1249         priv_ops->mark_phy_inactive = ar9003_hw_mark_phy_inactive;
1250         priv_ops->set_delta_slope = ar9003_hw_set_delta_slope;
1251         priv_ops->rfbus_req = ar9003_hw_rfbus_req;
1252         priv_ops->rfbus_done = ar9003_hw_rfbus_done;
1253         priv_ops->set_diversity = ar9003_hw_set_diversity;
1254         priv_ops->ani_control = ar9003_hw_ani_control;
1255         priv_ops->do_getnf = ar9003_hw_do_getnf;
1256         priv_ops->ani_cache_ini_regs = ar9003_hw_ani_cache_ini_regs;
1257         priv_ops->set_radar_params = ar9003_hw_set_radar_params;
1258
1259         ops->antdiv_comb_conf_get = ar9003_hw_antdiv_comb_conf_get;
1260         ops->antdiv_comb_conf_set = ar9003_hw_antdiv_comb_conf_set;
1261
1262         ar9003_hw_set_nf_limits(ah);
1263         ar9003_hw_set_radar_conf(ah);
1264         memcpy(ah->nf_regs, ar9300_cca_regs, sizeof(ah->nf_regs));
1265 }
1266
1267 void ar9003_hw_bb_watchdog_config(struct ath_hw *ah)
1268 {
1269         struct ath_common *common = ath9k_hw_common(ah);
1270         u32 idle_tmo_ms = ah->bb_watchdog_timeout_ms;
1271         u32 val, idle_count;
1272
1273         if (!idle_tmo_ms) {
1274                 /* disable IRQ, disable chip-reset for BB panic */
1275                 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
1276                           REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) &
1277                           ~(AR_PHY_WATCHDOG_RST_ENABLE |
1278                             AR_PHY_WATCHDOG_IRQ_ENABLE));
1279
1280                 /* disable watchdog in non-IDLE mode, disable in IDLE mode */
1281                 REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
1282                           REG_READ(ah, AR_PHY_WATCHDOG_CTL_1) &
1283                           ~(AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
1284                             AR_PHY_WATCHDOG_IDLE_ENABLE));
1285
1286                 ath_dbg(common, ATH_DBG_RESET, "Disabled BB Watchdog\n");
1287                 return;
1288         }
1289
1290         /* enable IRQ, disable chip-reset for BB watchdog */
1291         val = REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) & AR_PHY_WATCHDOG_CNTL2_MASK;
1292         REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
1293                   (val | AR_PHY_WATCHDOG_IRQ_ENABLE) &
1294                   ~AR_PHY_WATCHDOG_RST_ENABLE);
1295
1296         /* bound limit to 10 secs */
1297         if (idle_tmo_ms > 10000)
1298                 idle_tmo_ms = 10000;
1299
1300         /*
1301          * The time unit for watchdog event is 2^15 44/88MHz cycles.
1302          *
1303          * For HT20 we have a time unit of 2^15/44 MHz = .74 ms per tick
1304          * For HT40 we have a time unit of 2^15/88 MHz = .37 ms per tick
1305          *
1306          * Given we use fast clock now in 5 GHz, these time units should
1307          * be common for both 2 GHz and 5 GHz.
1308          */
1309         idle_count = (100 * idle_tmo_ms) / 74;
1310         if (ah->curchan && IS_CHAN_HT40(ah->curchan))
1311                 idle_count = (100 * idle_tmo_ms) / 37;
1312
1313         /*
1314          * enable watchdog in non-IDLE mode, disable in IDLE mode,
1315          * set idle time-out.
1316          */
1317         REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
1318                   AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
1319                   AR_PHY_WATCHDOG_IDLE_MASK |
1320                   (AR_PHY_WATCHDOG_NON_IDLE_MASK & (idle_count << 2)));
1321
1322         ath_dbg(common, ATH_DBG_RESET,
1323                 "Enabled BB Watchdog timeout (%u ms)\n",
1324                 idle_tmo_ms);
1325 }
1326
1327 void ar9003_hw_bb_watchdog_read(struct ath_hw *ah)
1328 {
1329         /*
1330          * we want to avoid printing in ISR context so we save the
1331          * watchdog status to be printed later in bottom half context.
1332          */
1333         ah->bb_watchdog_last_status = REG_READ(ah, AR_PHY_WATCHDOG_STATUS);
1334
1335         /*
1336          * the watchdog timer should reset on status read but to be sure
1337          * sure we write 0 to the watchdog status bit.
1338          */
1339         REG_WRITE(ah, AR_PHY_WATCHDOG_STATUS,
1340                   ah->bb_watchdog_last_status & ~AR_PHY_WATCHDOG_STATUS_CLR);
1341 }
1342
1343 void ar9003_hw_bb_watchdog_dbg_info(struct ath_hw *ah)
1344 {
1345         struct ath_common *common = ath9k_hw_common(ah);
1346         u32 status;
1347
1348         if (likely(!(common->debug_mask & ATH_DBG_RESET)))
1349                 return;
1350
1351         status = ah->bb_watchdog_last_status;
1352         ath_dbg(common, ATH_DBG_RESET,
1353                 "\n==== BB update: BB status=0x%08x ====\n", status);
1354         ath_dbg(common, ATH_DBG_RESET,
1355                 "** BB state: wd=%u det=%u rdar=%u rOFDM=%d rCCK=%u tOFDM=%u tCCK=%u agc=%u src=%u **\n",
1356                 MS(status, AR_PHY_WATCHDOG_INFO),
1357                 MS(status, AR_PHY_WATCHDOG_DET_HANG),
1358                 MS(status, AR_PHY_WATCHDOG_RADAR_SM),
1359                 MS(status, AR_PHY_WATCHDOG_RX_OFDM_SM),
1360                 MS(status, AR_PHY_WATCHDOG_RX_CCK_SM),
1361                 MS(status, AR_PHY_WATCHDOG_TX_OFDM_SM),
1362                 MS(status, AR_PHY_WATCHDOG_TX_CCK_SM),
1363                 MS(status, AR_PHY_WATCHDOG_AGC_SM),
1364                 MS(status, AR_PHY_WATCHDOG_SRCH_SM));
1365
1366         ath_dbg(common, ATH_DBG_RESET,
1367                 "** BB WD cntl: cntl1=0x%08x cntl2=0x%08x **\n",
1368                 REG_READ(ah, AR_PHY_WATCHDOG_CTL_1),
1369                 REG_READ(ah, AR_PHY_WATCHDOG_CTL_2));
1370         ath_dbg(common, ATH_DBG_RESET,
1371                 "** BB mode: BB_gen_controls=0x%08x **\n",
1372                 REG_READ(ah, AR_PHY_GEN_CTRL));
1373
1374 #define PCT(_field) (common->cc_survey._field * 100 / common->cc_survey.cycles)
1375         if (common->cc_survey.cycles)
1376                 ath_dbg(common, ATH_DBG_RESET,
1377                         "** BB busy times: rx_clear=%d%%, rx_frame=%d%%, tx_frame=%d%% **\n",
1378                         PCT(rx_busy), PCT(rx_frame), PCT(tx_frame));
1379
1380         ath_dbg(common, ATH_DBG_RESET,
1381                 "==== BB update: done ====\n\n");
1382 }
1383 EXPORT_SYMBOL(ar9003_hw_bb_watchdog_dbg_info);