sys/external/isc/atheros_hal/dist/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  * $Id: ah_eeprom_v14.c,v 1.4 2008/12/31 14:08:46 christos Exp $
  18  */
  19 #include <sys/endian.h>
  20 #include "opt_ah.h"
  21
  22 #include "ah.h"
  23 #include "ah_internal.h"
  24 #include "ah_eeprom_v14.h"
  25
  26 static HAL_STATUS
  27 v14EepromGet(struct ath_hal *ah, int param, void *val)
  28 {
  29 #define CHAN_A_IDX      0
  30 #define CHAN_B_IDX      1
  31 #define IS_VERS(op, v)  ((pBase->version & AR5416_EEP_VER_MINOR_MASK) op (v))
  32         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
  33         const MODAL_EEP_HEADER *pModal = ee->ee_base.modalHeader;
  34         const BASE_EEP_HEADER  *pBase  = &ee->ee_base.baseEepHeader;
  35         uint32_t sum;
  36         uint8_t *macaddr;
  37         int i;
  38
  39         switch (param) {
  40         case AR_EEP_NFTHRESH_5:
  41                 *(int16_t *)val = pModal[0].noiseFloorThreshCh[0];
  42                 return HAL_OK;
  43         case AR_EEP_NFTHRESH_2:
  44                 *(int16_t *)val = pModal[1].noiseFloorThreshCh[0];
  45                 return HAL_OK;
  46         case AR_EEP_MACADDR:            /* Get MAC Address */
  47                 sum = 0;
  48                 macaddr = val;
  49                 for (i = 0; i < 6; i++) {
  50                         macaddr[i] = pBase->macAddr[i];
  51                         sum += pBase->macAddr[i];
  52                 }
  53                 if (sum == 0 || sum == 0xffff*3) {
  54                         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad mac address %s\n",
  55                             __func__, ath_hal_ether_sprintf(macaddr));
  56                         return HAL_EEBADMAC;
  57                 } else
  58                         return HAL_OK;
  59         case AR_EEP_REGDMN_0:
  60                 return pBase->regDmn[0];
  61         case AR_EEP_REGDMN_1:
  62                 return pBase->regDmn[1];
  63         case AR_EEP_OPCAP:
  64                 return pBase->deviceCap;
  65         case AR_EEP_OPMODE:
  66                 return pBase->opCapFlags;
  67         case AR_EEP_RFSILENT:
  68                 return pBase->rfSilent;
  69         case AR_EEP_OB_5:
  70                 return pModal[CHAN_A_IDX].ob;
  71         case AR_EEP_DB_5:
  72                 return pModal[CHAN_A_IDX].db;
  73         case AR_EEP_OB_2:
  74                 return pModal[CHAN_B_IDX].ob;
  75         case AR_EEP_DB_2:
  76                 return pModal[CHAN_B_IDX].db;
  77         case AR_EEP_TXMASK:
  78                 return pBase->txMask;
  79         case AR_EEP_RXMASK:
  80                 return pBase->rxMask;
  81         case AR_EEP_RXGAIN_TYPE:
  82                 return IS_VERS(>=, AR5416_EEP_MINOR_VER_17) ?
  83                     pBase->rxGainType : AR5416_EEP_RXGAIN_ORIG;
  84         case AR_EEP_TXGAIN_TYPE:
  85                 return IS_VERS(>=, AR5416_EEP_MINOR_VER_19) ?
  86                     pBase->txGainType : AR5416_EEP_TXGAIN_ORIG;
  87         case AR_EEP_FSTCLK_5G:
  88                 return IS_VERS(>, AR5416_EEP_MINOR_VER_16) ?
  89                     pBase->fastClk5g : AH_TRUE;
  90         case AR_EEP_OL_PWRCTRL:
  91                 HALASSERT(val == AH_NULL);
  92                 return pBase->openLoopPwrCntl ?  HAL_OK : HAL_EIO;
  93         case AR_EEP_AMODE:
  94                 HALASSERT(val == AH_NULL);
  95                 return pBase->opCapFlags & AR5416_OPFLAGS_11A ?
  96                     HAL_OK : HAL_EIO;
  97         case AR_EEP_BMODE:
  98         case AR_EEP_GMODE:
  99                 HALASSERT(val == AH_NULL);
 100                 return pBase->opCapFlags & AR5416_OPFLAGS_11G ?
 101                     HAL_OK : HAL_EIO;
 102         case AR_EEP_32KHZCRYSTAL:
 103         case AR_EEP_COMPRESS:
 104         case AR_EEP_FASTFRAME:          /* XXX policy decision, h/w can do it */
 105         case AR_EEP_WRITEPROTECT:       /* NB: no write protect bit */
 106                 HALASSERT(val == AH_NULL);
 107                 /* fall thru... */
 108         case AR_EEP_MAXQCU:             /* NB: not in opCapFlags */
 109         case AR_EEP_KCENTRIES:          /* NB: not in opCapFlags */
 110                 return HAL_EIO;
 111         case AR_EEP_AES:
 112         case AR_EEP_BURST:
 113         case AR_EEP_RFKILL:
 114         case AR_EEP_TURBO5DISABLE:
 115         case AR_EEP_TURBO2DISABLE:
 116                 HALASSERT(val == AH_NULL);
 117                 return HAL_OK;
 118         case AR_EEP_ANTGAINMAX_2:
 119                 *(int8_t *) val = ee->ee_antennaGainMax[1];
 120                 return HAL_OK;
 121         case AR_EEP_ANTGAINMAX_5:
 122                 *(int8_t *) val = ee->ee_antennaGainMax[0];
 123                 return HAL_OK;
 124         default:
 125                 HALASSERT(0);
 126                 return HAL_EINVAL;
 127         }
 128 #undef IS_VERS
 129 #undef CHAN_A_IDX
 130 #undef CHAN_B_IDX
 131 }
 132
 133 static HAL_BOOL
 134 v14EepromSet(struct ath_hal *ah, int param, int v)
 135 {
 136         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 137
 138         switch (param) {
 139         case AR_EEP_ANTGAINMAX_2:
 140                 ee->ee_antennaGainMax[1] = (int8_t) v;
 141                 return HAL_OK;
 142         case AR_EEP_ANTGAINMAX_5:
 143                 ee->ee_antennaGainMax[0] = (int8_t) v;
 144                 return HAL_OK;
 145         }
 146         return HAL_EINVAL;
 147 }
 148
 149 static HAL_BOOL
 150 v14EepromDiag(struct ath_hal *ah, int request,
 151      const void *args, uint32_t argsize, void **result, uint32_t *resultsize)
 152 {
 153         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 154
 155         switch (request) {
 156         case HAL_DIAG_EEPROM:
 157                 *result = &ee->ee_base;
 158                 *resultsize = sizeof(ee->ee_base);
 159                 return AH_TRUE;
 160         }
 161         return AH_FALSE;
 162 }
 163
 164 #if 0
 165 /* XXX conditionalize by target byte order */
 166 #ifndef bswap16
 167 static __inline__ uint16_t
 168 __bswap16(uint16_t _x)
 169 {
 170         return ((uint16_t)(
 171               (((const uint8_t *)(&_x))[0]    ) |
 172               (((const uint8_t *)(&_x))[1]<< 8))
 173         );
 174 }
 175 #endif
 176 #endif
 177
 178 /* Do structure specific swaps if Eeprom format is non native to host */
 179 static void
 180 eepromSwap(struct ar5416eeprom *ee)
 181 {
 182         uint32_t integer, i, j;
 183         uint16_t word;
 184         MODAL_EEP_HEADER *pModal;
 185
 186         /* convert Base Eep header */
 187         word = __bswap16(ee->baseEepHeader.length);
 188         ee->baseEepHeader.length = word;
 189
 190         word = __bswap16(ee->baseEepHeader.checksum);
 191         ee->baseEepHeader.checksum = word;
 192
 193         word = __bswap16(ee->baseEepHeader.version);
 194         ee->baseEepHeader.version = word;
 195
 196         word = __bswap16(ee->baseEepHeader.regDmn[0]);
 197         ee->baseEepHeader.regDmn[0] = word;
 198
 199         word = __bswap16(ee->baseEepHeader.regDmn[1]);
 200         ee->baseEepHeader.regDmn[1] = word;
 201
 202         word = __bswap16(ee->baseEepHeader.rfSilent);
 203         ee->baseEepHeader.rfSilent = word;
 204
 205         word = __bswap16(ee->baseEepHeader.blueToothOptions);
 206         ee->baseEepHeader.blueToothOptions = word;
 207
 208         word = __bswap16(ee->baseEepHeader.deviceCap);
 209         ee->baseEepHeader.deviceCap = word;
 210
 211         /* convert Modal Eep header */
 212         for (j = 0; j < 2; j++) {
 213                 pModal = &ee->modalHeader[j];
 214
 215                 /* XXX linux/ah_osdep.h only defines __bswap32 for BE */
 216                 integer = __bswap32(pModal->antCtrlCommon);
 217                 pModal->antCtrlCommon = integer;
 218
 219                 for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 220                         integer = __bswap32(pModal->antCtrlChain[i]);
 221                         pModal->antCtrlChain[i] = integer;
 222                 }
 223
 224                 for (i = 0; i < AR5416_EEPROM_MODAL_SPURS; i++) {
 225                         word = __bswap16(pModal->spurChans[i].spurChan);
 226                         pModal->spurChans[i].spurChan = word;
 227                 }
 228         }
 229 }
 230
 231 static uint16_t
 232 v14EepromGetSpurChan(struct ath_hal *ah, int ix, HAL_BOOL is2GHz)
 233 {
 234         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 235
 236         HALASSERT(0 <= ix && ix <  AR5416_EEPROM_MODAL_SPURS);
 237         return ee->ee_base.modalHeader[is2GHz].spurChans[ix].spurChan;
 238 }
 239
 240 /**************************************************************************
 241  * fbin2freq
 242  *
 243  * Get channel value from binary representation held in eeprom
 244  * RETURNS: the frequency in MHz
 245  */
 246 static uint16_t
 247 fbin2freq(uint8_t fbin, HAL_BOOL is2GHz)
 248 {
 249         /*
 250          * Reserved value 0xFF provides an empty definition both as
 251          * an fbin and as a frequency - do not convert
 252          */
 253         if (fbin == AR5416_BCHAN_UNUSED)
 254                 return fbin;
 255         return (uint16_t)((is2GHz) ? (2300 + fbin) : (4800 + 5 * fbin));
 256 }
 257
 258 /*
 259  * Copy EEPROM Conformance Testing Limits contents
 260  * into the allocated space
 261  */
 262 /* USE CTLS from chain zero */
 263 #define CTL_CHAIN       0
 264
 265 static void
 266 v14EepromReadCTLInfo(struct ath_hal *ah, HAL_EEPROM_v14 *ee)
 267 {
 268         RD_EDGES_POWER *rep = ee->ee_rdEdgesPower;
 269         int i, j;
 270
 271         HALASSERT(AR5416_NUM_CTLS <= sizeof(ee->ee_rdEdgesPower)/NUM_EDGES);
 272
 273         for (i = 0; ee->ee_base.ctlIndex[i] != 0 && i < AR5416_NUM_CTLS; i++) {
 274                 for (j = 0; j < NUM_EDGES; j ++) {
 275                         /* XXX Confirm this is the right thing to do when an invalid channel is stored */
 276                         if (ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel == AR5416_BCHAN_UNUSED) {
 277                                 rep[j].rdEdge = 0;
 278                                 rep[j].twice_rdEdgePower = 0;
 279                                 rep[j].flag = 0;
 280                         } else {
 281                                 rep[j].rdEdge = fbin2freq(
 282                                     ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel,
 283                                     (ee->ee_base.ctlIndex[i] & CTL_MODE_M) != CTL_11A);
 284                                 rep[j].twice_rdEdgePower = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_POWER);
 285                                 rep[j].flag = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_FLAG) != 0;
 286                         }
 287                 }
 288                 rep += NUM_EDGES;
 289         }
 290         ee->ee_numCtls = i;
 291         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
 292             "%s Numctls = %u\n",__func__,i);
 293 }
 294
 295 /*
 296  * Reclaim any EEPROM-related storage.
 297  */
 298 static void
 299 v14EepromDetach(struct ath_hal *ah)
 300 {
 301         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 302
 303         ath_hal_free(ee);
 304         AH_PRIVATE(ah)->ah_eeprom = AH_NULL;
 305 }
 306
 307 #define owl_get_eep_ver(_ee)   \
 308     (((_ee)->ee_base.baseEepHeader.version >> 12) & 0xF)
 309 #define owl_get_eep_rev(_ee)   \
 310     (((_ee)->ee_base.baseEepHeader.version) & 0xFFF)
 311
 312 HAL_STATUS
 313 ath_hal_v14EepromAttach(struct ath_hal *ah)
 314 {
 315 #define NW(a)   (sizeof(a) / sizeof(uint16_t))
 316         HAL_EEPROM_v14 *ee = AH_PRIVATE(ah)->ah_eeprom;
 317         uint16_t *eep_data, magic;
 318         HAL_BOOL need_swap;
 319         u_int w, off, len;
 320         uint32_t sum;
 321
 322         HALASSERT(ee == AH_NULL);
 323
 324         if (!ath_hal_eepromRead(ah, AR5416_EEPROM_MAGIC_OFFSET, &magic)) {
 325                 HALDEBUG(ah, HAL_DEBUG_ANY,
 326                     "%s Error reading Eeprom MAGIC\n", __func__);
 327                 return HAL_EEREAD;
 328         }
 329         HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s Eeprom Magic = 0x%x\n",
 330             __func__, magic);
 331         if (magic != AR5416_EEPROM_MAGIC) {
 332                 HALDEBUG(ah, HAL_DEBUG_ANY, "Bad magic number\n");
 333                 return HAL_EEMAGIC;
 334         }
 335
 336         ee = ath_hal_malloc(sizeof(HAL_EEPROM_v14));
 337         if (ee == AH_NULL) {
 338                 /* XXX message */
 339                 return HAL_ENOMEM;
 340         }
 341
 342         eep_data = (uint16_t *)&ee->ee_base;
 343         for (w = 0; w < NW(struct ar5416eeprom); w++) {
 344                 off = owl_eep_start_loc + w;    /* NB: AP71 starts at 0 */
 345                 if (!ath_hal_eepromRead(ah, off, &eep_data[w])) {
 346                         HALDEBUG(ah, HAL_DEBUG_ANY,
 347                             "%s eeprom read error at offset 0x%x\n",
 348                             __func__, off);
 349                         return HAL_EEREAD;
 350                 }
 351         }
 352         /* Convert to eeprom native eeprom endian format */
 353         if (isBigEndian()) {
 354                 for (w = 0; w < NW(struct ar5416eeprom); w++)
 355                         eep_data[w] = __bswap16(eep_data[w]);
 356         }
 357
 358         /*
 359          * At this point, we're in the native eeprom endian format
 360          * Now, determine the eeprom endian by looking at byte 26??
 361          */
 362         need_swap = ((ee->ee_base.baseEepHeader.eepMisc & AR5416_EEPMISC_BIG_ENDIAN) != 0) ^ isBigEndian();
 363         if (need_swap) {
 364                 HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
 365                     "Byte swap EEPROM contents.\n");
 366                 len = __bswap16(ee->ee_base.baseEepHeader.length);
 367         } else {
 368                 len = ee->ee_base.baseEepHeader.length;
 369         }
 370         len = AH_MIN(len, sizeof(struct ar5416eeprom)) / sizeof(uint16_t);
 371
 372         /* Apply the checksum, done in native eeprom format */
 373         /* XXX - Need to check to make sure checksum calculation is done
 374          * in the correct endian format.  Right now, it seems it would
 375          * cast the raw data to host format and do the calculation, which may
 376          * not be correct as the calculation may need to be done in the native
 377          * eeprom format
 378          */
 379         sum = 0;
 380         for (w = 0; w < len; w++)
 381                 sum ^= eep_data[w];
 382         /* Check CRC - Attach should fail on a bad checksum */
 383         if (sum != 0xffff) {
 384                 HALDEBUG(ah, HAL_DEBUG_ANY,
 385                     "Bad EEPROM checksum 0x%x (Len=%u)\n", sum, len);
 386                 return HAL_EEBADSUM;
 387         }
 388
 389         if (need_swap)
 390                 eepromSwap(&ee->ee_base);       /* byte swap multi-byte data */
 391
 392         /* swap words 0+2 so version is at the front */
 393         magic = eep_data[0];
 394         eep_data[0] = eep_data[2];
 395         eep_data[2] = magic;
 396
 397         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
 398             "%s Eeprom Version %u.%u\n", __func__,
 399             owl_get_eep_ver(ee), owl_get_eep_rev(ee));
 400
 401         /* NB: must be after all byte swapping */
 402         if (owl_get_eep_ver(ee) != AR5416_EEP_VER) {
 403                 HALDEBUG(ah, HAL_DEBUG_ANY,
 404                     "Bad EEPROM version 0x%x\n", owl_get_eep_ver(ee));
 405                 return HAL_EEBADSUM;
 406         }
 407
 408         v14EepromReadCTLInfo(ah, ee);           /* Get CTLs */
 409
 410         AH_PRIVATE(ah)->ah_eeprom = ee;
 411         AH_PRIVATE(ah)->ah_eeversion = ee->ee_base.baseEepHeader.version;
 412         AH_PRIVATE(ah)->ah_eepromDetach = v14EepromDetach;
 413         AH_PRIVATE(ah)->ah_eepromGet = v14EepromGet;
 414         AH_PRIVATE(ah)->ah_eepromSet = v14EepromSet;
 415         AH_PRIVATE(ah)->ah_getSpurChan = v14EepromGetSpurChan;
 416         AH_PRIVATE(ah)->ah_eepromDiag = v14EepromDiag;
 417         return HAL_OK;
 418 #undef NW
 419 }