sys/dev/netif/ath/hal/ath_hal/ah_eeprom_v14.c

   1 /*
   2  * Copyright (c) 2008 Sam Leffler, Errno Consulting
   3  * Copyright (c) 2008 Atheros Communications, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  *
  17  * $FreeBSD: head/sys/dev/ath/ath_hal/ah_eeprom_v14.c 186019 2008-12-13 03:49:01Z sam $
  18  */
  19 #include "opt_ah.h"
  20
  21 #include "ah.h"
  22 #include "ah_internal.h"
  23 #include "ah_eeprom_v14.h"
  24
  25 static HAL_STATUS
  26 v14EepromGet(struct ath_hal *ah, int param, void *val)
  27 {
  28 #define CHAN_A_IDX      0
  29 #define CHAN_B_IDX      1
  30 #define IS_VERS(op, v)  ((pBase->version & AR5416_EEP_VER_MINOR_MASK) op (v))
  31         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
  32         const MODAL_EEP_HEADER *pModal = ee->ee_base.modalHeader;
  33         const BASE_EEP_HEADER  *pBase  = &ee->ee_base.baseEepHeader;
  34         uint32_t sum;
  35         uint8_t *macaddr;
  36         int i;
  37
  38         switch (param) {
  39         case AR_EEP_NFTHRESH_5:
  40                 *(int16_t *)val = pModal[0].noiseFloorThreshCh[0];
  41                 return HAL_OK;
  42         case AR_EEP_NFTHRESH_2:
  43                 *(int16_t *)val = pModal[1].noiseFloorThreshCh[0];
  44                 return HAL_OK;
  45         case AR_EEP_MACADDR:            /* Get MAC Address */
  46                 sum = 0;
  47                 macaddr = val;
  48                 for (i = 0; i < 6; i++) {
  49                         macaddr[i] = pBase->macAddr[i];
  50                         sum += pBase->macAddr[i];
  51                 }
  52                 if (sum == 0 || sum == 0xffff*3) {
  53                         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad mac address %s\n",
  54                             __func__, ath_hal_ether_sprintf(macaddr));
  55                         return HAL_EEBADMAC;
  56                 }
  57                 return HAL_OK;
  58         case AR_EEP_REGDMN_0:
  59                 return pBase->regDmn[0];
  60         case AR_EEP_REGDMN_1:
  61                 return pBase->regDmn[1];
  62         case AR_EEP_OPCAP:
  63                 return pBase->deviceCap;
  64         case AR_EEP_OPMODE:
  65                 return pBase->opCapFlags;
  66         case AR_EEP_RFSILENT:
  67                 return pBase->rfSilent;
  68         case AR_EEP_OB_5:
  69                 return pModal[CHAN_A_IDX].ob;
  70         case AR_EEP_DB_5:
  71                 return pModal[CHAN_A_IDX].db;
  72         case AR_EEP_OB_2:
  73                 return pModal[CHAN_B_IDX].ob;
  74         case AR_EEP_DB_2:
  75                 return pModal[CHAN_B_IDX].db;
  76         case AR_EEP_TXMASK:
  77                 return pBase->txMask;
  78         case AR_EEP_RXMASK:
  79                 return pBase->rxMask;
  80         case AR_EEP_RXGAIN_TYPE:
  81                 return IS_VERS(>=, AR5416_EEP_MINOR_VER_17) ?
  82                     pBase->rxGainType : AR5416_EEP_RXGAIN_ORIG;
  83         case AR_EEP_TXGAIN_TYPE:
  84                 return IS_VERS(>=, AR5416_EEP_MINOR_VER_19) ?
  85                     pBase->txGainType : AR5416_EEP_TXGAIN_ORIG;
  86         case AR_EEP_FSTCLK_5G:
  87                 return IS_VERS(>, AR5416_EEP_MINOR_VER_16) ?
  88                     pBase->fastClk5g : AH_TRUE;
  89         case AR_EEP_OL_PWRCTRL:
  90                 HALASSERT(val == AH_NULL);
  91                 return pBase->openLoopPwrCntl ?  HAL_OK : HAL_EIO;
  92         case AR_EEP_AMODE:
  93                 HALASSERT(val == AH_NULL);
  94                 return pBase->opCapFlags & AR5416_OPFLAGS_11A ?
  95                     HAL_OK : HAL_EIO;
  96         case AR_EEP_BMODE:
  97         case AR_EEP_GMODE:
  98                 HALASSERT(val == AH_NULL);
  99                 return pBase->opCapFlags & AR5416_OPFLAGS_11G ?
 100                     HAL_OK : HAL_EIO;
 101         case AR_EEP_32KHZCRYSTAL:
 102         case AR_EEP_COMPRESS:
 103         case AR_EEP_FASTFRAME:          /* XXX policy decision, h/w can do it */
 104         case AR_EEP_WRITEPROTECT:       /* NB: no write protect bit */
 105                 HALASSERT(val == AH_NULL);
 106                 /* fall thru... */
 107         case AR_EEP_MAXQCU:             /* NB: not in opCapFlags */
 108         case AR_EEP_KCENTRIES:          /* NB: not in opCapFlags */
 109                 return HAL_EIO;
 110         case AR_EEP_AES:
 111         case AR_EEP_BURST:
 112         case AR_EEP_RFKILL:
 113         case AR_EEP_TURBO5DISABLE:
 114         case AR_EEP_TURBO2DISABLE:
 115                 HALASSERT(val == AH_NULL);
 116                 return HAL_OK;
 117         case AR_EEP_ANTGAINMAX_2:
 118                 *(int8_t *) val = ee->ee_antennaGainMax[1];
 119                 return HAL_OK;
 120         case AR_EEP_ANTGAINMAX_5:
 121                 *(int8_t *) val = ee->ee_antennaGainMax[0];
 122                 return HAL_OK;
 123         default:
 124                 HALASSERT(0);
 125                 return HAL_EINVAL;
 126         }
 127 #undef IS_VERS
 128 #undef CHAN_A_IDX
 129 #undef CHAN_B_IDX
 130 }
 131
 132 static HAL_BOOL
 133 v14EepromSet(struct ath_hal *ah, int param, int v)
 134 {
 135         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 136
 137         switch (param) {
 138         case AR_EEP_ANTGAINMAX_2:
 139                 ee->ee_antennaGainMax[1] = (int8_t) v;
 140                 return HAL_OK;
 141         case AR_EEP_ANTGAINMAX_5:
 142                 ee->ee_antennaGainMax[0] = (int8_t) v;
 143                 return HAL_OK;
 144         }
 145         return HAL_EINVAL;
 146 }
 147
 148 static HAL_BOOL
 149 v14EepromDiag(struct ath_hal *ah, int request,
 150      const void *args, uint32_t argsize, void **result, uint32_t *resultsize)
 151 {
 152         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 153
 154         switch (request) {
 155         case HAL_DIAG_EEPROM:
 156                 *result = &ee->ee_base;
 157                 *resultsize = sizeof(ee->ee_base);
 158                 return AH_TRUE;
 159         }
 160         return AH_FALSE;
 161 }
 162
 163 /* Do structure specific swaps if Eeprom format is non native to host */
 164 static void
 165 eepromSwap(struct ar5416eeprom *ee)
 166 {
 167         uint32_t integer, i, j;
 168         uint16_t word;
 169         MODAL_EEP_HEADER *pModal;
 170
 171         /* convert Base Eep header */
 172         word = __bswap16(ee->baseEepHeader.length);
 173         ee->baseEepHeader.length = word;
 174
 175         word = __bswap16(ee->baseEepHeader.checksum);
 176         ee->baseEepHeader.checksum = word;
 177
 178         word = __bswap16(ee->baseEepHeader.version);
 179         ee->baseEepHeader.version = word;
 180
 181         word = __bswap16(ee->baseEepHeader.regDmn[0]);
 182         ee->baseEepHeader.regDmn[0] = word;
 183
 184         word = __bswap16(ee->baseEepHeader.regDmn[1]);
 185         ee->baseEepHeader.regDmn[1] = word;
 186
 187         word = __bswap16(ee->baseEepHeader.rfSilent);
 188         ee->baseEepHeader.rfSilent = word;
 189
 190         word = __bswap16(ee->baseEepHeader.blueToothOptions);
 191         ee->baseEepHeader.blueToothOptions = word;
 192
 193         word = __bswap16(ee->baseEepHeader.deviceCap);
 194         ee->baseEepHeader.deviceCap = word;
 195
 196         /* convert Modal Eep header */
 197         for (j = 0; j < 2; j++) {
 198                 pModal = &ee->modalHeader[j];
 199
 200                 /* XXX linux/ah_osdep.h only defines __bswap32 for BE */
 201                 integer = __bswap32(pModal->antCtrlCommon);
 202                 pModal->antCtrlCommon = integer;
 203
 204                 for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 205                         integer = __bswap32(pModal->antCtrlChain[i]);
 206                         pModal->antCtrlChain[i] = integer;
 207                 }
 208
 209                 for (i = 0; i < AR5416_EEPROM_MODAL_SPURS; i++) {
 210                         word = __bswap16(pModal->spurChans[i].spurChan);
 211                         pModal->spurChans[i].spurChan = word;
 212                 }
 213         }
 214 }
 215
 216 static uint16_t
 217 v14EepromGetSpurChan(struct ath_hal *ah, int ix, HAL_BOOL is2GHz)
 218 {
 219         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 220
 221         HALASSERT(0 <= ix && ix <  AR5416_EEPROM_MODAL_SPURS);
 222         return ee->ee_base.modalHeader[is2GHz].spurChans[ix].spurChan;
 223 }
 224
 225 /**************************************************************************
 226  * fbin2freq
 227  *
 228  * Get channel value from binary representation held in eeprom
 229  * RETURNS: the frequency in MHz
 230  */
 231 static uint16_t
 232 fbin2freq(uint8_t fbin, HAL_BOOL is2GHz)
 233 {
 234         /*
 235          * Reserved value 0xFF provides an empty definition both as
 236          * an fbin and as a frequency - do not convert
 237          */
 238         if (fbin == AR5416_BCHAN_UNUSED)
 239                 return fbin;
 240         return (uint16_t)((is2GHz) ? (2300 + fbin) : (4800 + 5 * fbin));
 241 }
 242
 243 /*
 244  * Copy EEPROM Conformance Testing Limits contents
 245  * into the allocated space
 246  */
 247 /* USE CTLS from chain zero */
 248 #define CTL_CHAIN       0
 249
 250 static void
 251 v14EepromReadCTLInfo(struct ath_hal *ah, HAL_EEPROM_v14 *ee)
 252 {
 253         RD_EDGES_POWER *rep = ee->ee_rdEdgesPower;
 254         int i, j;
 255
 256         HALASSERT(AR5416_NUM_CTLS <= sizeof(ee->ee_rdEdgesPower)/NUM_EDGES);
 257
 258         for (i = 0; ee->ee_base.ctlIndex[i] != 0 && i < AR5416_NUM_CTLS; i++) {
 259                 for (j = 0; j < NUM_EDGES; j ++) {
 260                         /* XXX Confirm this is the right thing to do when an invalid channel is stored */
 261                         if (ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel == AR5416_BCHAN_UNUSED) {
 262                                 rep[j].rdEdge = 0;
 263                                 rep[j].twice_rdEdgePower = 0;
 264                                 rep[j].flag = 0;
 265                         } else {
 266                                 rep[j].rdEdge = fbin2freq(
 267                                     ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel,
 268                                     (ee->ee_base.ctlIndex[i] & CTL_MODE_M) != CTL_11A);
 269                                 rep[j].twice_rdEdgePower = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_POWER);
 270                                 rep[j].flag = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_FLAG) != 0;
 271                         }
 272                 }
 273                 rep += NUM_EDGES;
 274         }
 275         ee->ee_numCtls = i;
 276         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
 277             "%s Numctls = %u\n",__func__,i);
 278 }
 279
 280 /*
 281  * Reclaim any EEPROM-related storage.
 282  */
 283 static void
 284 v14EepromDetach(struct ath_hal *ah)
 285 {
 286         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 287
 288         ath_hal_free(ee);
 289         AH_PRIVATE(ah)->ah_eeprom = AH_NULL;
 290 }
 291
 292 #define owl_get_eep_ver(_ee)   \
 293     (((_ee)->ee_base.baseEepHeader.version >> 12) & 0xF)
 294 #define owl_get_eep_rev(_ee)   \
 295     (((_ee)->ee_base.baseEepHeader.version) & 0xFFF)
 296
 297 HAL_STATUS
 298 ath_hal_v14EepromAttach(struct ath_hal *ah)
 299 {
 300 #define NW(a)   (sizeof(a) / sizeof(uint16_t))
 301         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 302         uint16_t *eep_data, magic;
 303         HAL_BOOL need_swap;
 304         u_int w, off, len;
 305         uint32_t sum;
 306
 307         HALASSERT(ee == AH_NULL);
 308
 309         if (!ath_hal_eepromRead(ah, AR5416_EEPROM_MAGIC_OFFSET, &magic)) {
 310                 HALDEBUG(ah, HAL_DEBUG_ANY,
 311                     "%s Error reading Eeprom MAGIC\n", __func__);
 312                 return HAL_EEREAD;
 313         }
 314         HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s Eeprom Magic = 0x%x\n",
 315             __func__, magic);
 316         if (magic != AR5416_EEPROM_MAGIC) {
 317                 HALDEBUG(ah, HAL_DEBUG_ANY, "Bad magic number\n");
 318                 return HAL_EEMAGIC;
 319         }
 320
 321         ee = ath_hal_malloc(sizeof(HAL_EEPROM_v14));
 322         if (ee == AH_NULL) {
 323                 /* XXX message */
 324                 return HAL_ENOMEM;
 325         }
 326
 327         eep_data = (uint16_t *)&ee->ee_base;
 328         for (w = 0; w < NW(struct ar5416eeprom); w++) {
 329                 off = owl_eep_start_loc + w;    /* NB: AP71 starts at 0 */
 330                 if (!ath_hal_eepromRead(ah, off, &eep_data[w])) {
 331                         HALDEBUG(ah, HAL_DEBUG_ANY,
 332                             "%s eeprom read error at offset 0x%x\n",
 333                             __func__, off);
 334                         return HAL_EEREAD;
 335                 }
 336         }
 337         /* Convert to eeprom native eeprom endian format */
 338         if (isBigEndian()) {
 339                 for (w = 0; w < NW(struct ar5416eeprom); w++)
 340                         eep_data[w] = __bswap16(eep_data[w]);
 341         }
 342
 343         /*
 344          * At this point, we're in the native eeprom endian format
 345          * Now, determine the eeprom endian by looking at byte 26??
 346          */
 347         need_swap = ((ee->ee_base.baseEepHeader.eepMisc & AR5416_EEPMISC_BIG_ENDIAN) != 0) ^ isBigEndian();
 348         if (need_swap) {
 349                 HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
 350                     "Byte swap EEPROM contents.\n");
 351                 len = __bswap16(ee->ee_base.baseEepHeader.length);
 352         } else {
 353                 len = ee->ee_base.baseEepHeader.length;
 354         }
 355         len = AH_MIN(len, sizeof(struct ar5416eeprom)) / sizeof(uint16_t);
 356
 357         /* Apply the checksum, done in native eeprom format */
 358         /* XXX - Need to check to make sure checksum calculation is done
 359          * in the correct endian format.  Right now, it seems it would
 360          * cast the raw data to host format and do the calculation, which may
 361          * not be correct as the calculation may need to be done in the native
 362          * eeprom format
 363          */
 364         sum = 0;
 365         for (w = 0; w < len; w++)
 366                 sum ^= eep_data[w];
 367         /* Check CRC - Attach should fail on a bad checksum */
 368         if (sum != 0xffff) {
 369                 HALDEBUG(ah, HAL_DEBUG_ANY,
 370                     "Bad EEPROM checksum 0x%x (Len=%u)\n", sum, len);
 371                 return HAL_EEBADSUM;
 372         }
 373
 374         if (need_swap)
 375                 eepromSwap(&ee->ee_base);       /* byte swap multi-byte data */
 376
 377         /* swap words 0+2 so version is at the front */
 378         magic = eep_data[0];
 379         eep_data[0] = eep_data[2];
 380         eep_data[2] = magic;
 381
 382         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
 383             "%s Eeprom Version %u.%u\n", __func__,
 384             owl_get_eep_ver(ee), owl_get_eep_rev(ee));
 385
 386         /* NB: must be after all byte swapping */
 387         if (owl_get_eep_ver(ee) != AR5416_EEP_VER) {
 388                 HALDEBUG(ah, HAL_DEBUG_ANY,
 389                     "Bad EEPROM version 0x%x\n", owl_get_eep_ver(ee));
 390                 return HAL_EEBADSUM;
 391         }
 392
 393         v14EepromReadCTLInfo(ah, ee);           /* Get CTLs */
 394
 395         AH_PRIVATE(ah)->ah_eeprom = ee;
 396         AH_PRIVATE(ah)->ah_eeversion = ee->ee_base.baseEepHeader.version;
 397         AH_PRIVATE(ah)->ah_eepromDetach = v14EepromDetach;
 398         AH_PRIVATE(ah)->ah_eepromGet = v14EepromGet;
 399         AH_PRIVATE(ah)->ah_eepromSet = v14EepromSet;
 400         AH_PRIVATE(ah)->ah_getSpurChan = v14EepromGetSpurChan;
 401         AH_PRIVATE(ah)->ah_eepromDiag = v14EepromDiag;
 402         return HAL_OK;
 403 #undef NW
 404 }