2a8e88943b
Calibration/PCI data that's written to flash (rather than EEPROM attached to the NIC) is typically already in host-endian. The existing checks end up swapping 16 bit words incorrectly - the correct solution would be to read the magic value and determine the EEPROM endianness from that. (This is what Linux does.) This doesn't completely enable embedded use of the AR9285/AR9287 - notably, the EEPROM read methods need to be made generic and available to all EEPROM drivers. I'll worry about that later. Approved by: re (kib)
399 lines
11 KiB
C
399 lines
11 KiB
C
/*
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* Copyright (c) 2009 Rui Paulo <rpaulo@FreeBSD.org>
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* Copyright (c) 2008 Sam Leffler, Errno Consulting
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* Copyright (c) 2008 Atheros Communications, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* $FreeBSD$
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*/
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#include "opt_ah.h"
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#include "ah.h"
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#include "ah_internal.h"
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#include "ah_eeprom_v14.h"
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#include "ah_eeprom_v4k.h"
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static HAL_STATUS
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v4kEepromGet(struct ath_hal *ah, int param, void *val)
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{
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#define CHAN_A_IDX 0
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#define CHAN_B_IDX 1
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#define IS_VERS(op, v) ((pBase->version & AR5416_EEP_VER_MINOR_MASK) op (v))
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HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
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const MODAL_EEP4K_HEADER *pModal = &ee->ee_base.modalHeader;
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const BASE_EEP4K_HEADER *pBase = &ee->ee_base.baseEepHeader;
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uint32_t sum;
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uint8_t *macaddr;
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int i;
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switch (param) {
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case AR_EEP_NFTHRESH_2:
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*(int16_t *)val = pModal->noiseFloorThreshCh[0];
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return HAL_OK;
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case AR_EEP_MACADDR: /* Get MAC Address */
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sum = 0;
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macaddr = val;
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for (i = 0; i < 6; i++) {
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macaddr[i] = pBase->macAddr[i];
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sum += pBase->macAddr[i];
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}
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if (sum == 0 || sum == 0xffff*3) {
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HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad mac address %s\n",
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__func__, ath_hal_ether_sprintf(macaddr));
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return HAL_EEBADMAC;
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}
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return HAL_OK;
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case AR_EEP_REGDMN_0:
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return pBase->regDmn[0];
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case AR_EEP_REGDMN_1:
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return pBase->regDmn[1];
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case AR_EEP_OPCAP:
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return pBase->deviceCap;
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case AR_EEP_OPMODE:
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return pBase->opCapFlags;
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case AR_EEP_RFSILENT:
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return pBase->rfSilent;
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case AR_EEP_OB_2:
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return pModal->ob_0;
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case AR_EEP_DB_2:
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return pModal->db1_1;
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case AR_EEP_TXMASK:
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return pBase->txMask;
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case AR_EEP_RXMASK:
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return pBase->rxMask;
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case AR_EEP_RXGAIN_TYPE:
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return AR5416_EEP_RXGAIN_ORIG;
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case AR_EEP_TXGAIN_TYPE:
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return IS_VERS(>=, AR5416_EEP_MINOR_VER_19) ?
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pBase->txGainType : AR5416_EEP_TXGAIN_ORIG;
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case AR_EEP_OL_PWRCTRL:
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HALASSERT(val == AH_NULL);
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return HAL_EIO;
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case AR_EEP_AMODE:
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HALASSERT(val == AH_NULL);
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return pBase->opCapFlags & AR5416_OPFLAGS_11A ?
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HAL_OK : HAL_EIO;
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case AR_EEP_BMODE:
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case AR_EEP_GMODE:
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HALASSERT(val == AH_NULL);
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return pBase->opCapFlags & AR5416_OPFLAGS_11G ?
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HAL_OK : HAL_EIO;
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case AR_EEP_32KHZCRYSTAL:
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case AR_EEP_COMPRESS:
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case AR_EEP_FASTFRAME: /* XXX policy decision, h/w can do it */
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case AR_EEP_WRITEPROTECT: /* NB: no write protect bit */
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HALASSERT(val == AH_NULL);
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/* fall thru... */
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case AR_EEP_MAXQCU: /* NB: not in opCapFlags */
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case AR_EEP_KCENTRIES: /* NB: not in opCapFlags */
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return HAL_EIO;
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case AR_EEP_AES:
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case AR_EEP_BURST:
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case AR_EEP_RFKILL:
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case AR_EEP_TURBO2DISABLE:
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HALASSERT(val == AH_NULL);
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return HAL_OK;
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case AR_EEP_ANTGAINMAX_2:
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*(int8_t *) val = ee->ee_antennaGainMax;
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return HAL_OK;
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default:
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HALASSERT(0);
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return HAL_EINVAL;
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}
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#undef IS_VERS
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#undef CHAN_A_IDX
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#undef CHAN_B_IDX
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}
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static HAL_STATUS
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v4kEepromSet(struct ath_hal *ah, int param, int v)
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{
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HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
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switch (param) {
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case AR_EEP_ANTGAINMAX_2:
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ee->ee_antennaGainMax = (int8_t) v;
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return HAL_OK;
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}
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return HAL_EINVAL;
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}
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static HAL_BOOL
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v4kEepromDiag(struct ath_hal *ah, int request,
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const void *args, uint32_t argsize, void **result, uint32_t *resultsize)
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{
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HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
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switch (request) {
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case HAL_DIAG_EEPROM:
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*result = ee;
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*resultsize = sizeof(HAL_EEPROM_v4k);
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return AH_TRUE;
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}
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return AH_FALSE;
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}
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/* Do structure specific swaps if Eeprom format is non native to host */
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static void
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eepromSwap(struct ar5416eeprom_4k *ee)
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{
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uint32_t integer, i;
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uint16_t word;
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MODAL_EEP4K_HEADER *pModal;
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/* convert Base Eep header */
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word = __bswap16(ee->baseEepHeader.length);
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ee->baseEepHeader.length = word;
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word = __bswap16(ee->baseEepHeader.checksum);
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ee->baseEepHeader.checksum = word;
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word = __bswap16(ee->baseEepHeader.version);
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ee->baseEepHeader.version = word;
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word = __bswap16(ee->baseEepHeader.regDmn[0]);
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ee->baseEepHeader.regDmn[0] = word;
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word = __bswap16(ee->baseEepHeader.regDmn[1]);
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ee->baseEepHeader.regDmn[1] = word;
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word = __bswap16(ee->baseEepHeader.rfSilent);
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ee->baseEepHeader.rfSilent = word;
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word = __bswap16(ee->baseEepHeader.blueToothOptions);
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ee->baseEepHeader.blueToothOptions = word;
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word = __bswap16(ee->baseEepHeader.deviceCap);
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ee->baseEepHeader.deviceCap = word;
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/* convert Modal Eep header */
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pModal = &ee->modalHeader;
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/* XXX linux/ah_osdep.h only defines __bswap32 for BE */
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integer = __bswap32(pModal->antCtrlCommon);
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pModal->antCtrlCommon = integer;
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for (i = 0; i < AR5416_4K_MAX_CHAINS; i++) {
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integer = __bswap32(pModal->antCtrlChain[i]);
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pModal->antCtrlChain[i] = integer;
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}
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for (i = 0; i < AR5416_EEPROM_MODAL_SPURS; i++) {
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word = __bswap16(pModal->spurChans[i].spurChan);
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pModal->spurChans[i].spurChan = word;
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}
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}
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static uint16_t
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v4kEepromGetSpurChan(struct ath_hal *ah, int ix, HAL_BOOL is2GHz)
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{
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HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
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HALASSERT(0 <= ix && ix < AR5416_EEPROM_MODAL_SPURS);
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HALASSERT(is2GHz);
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return ee->ee_base.modalHeader.spurChans[ix].spurChan;
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}
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/**************************************************************************
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* fbin2freq
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*
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* Get channel value from binary representation held in eeprom
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* RETURNS: the frequency in MHz
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*/
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static uint16_t
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fbin2freq(uint8_t fbin, HAL_BOOL is2GHz)
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{
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/*
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* Reserved value 0xFF provides an empty definition both as
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* an fbin and as a frequency - do not convert
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*/
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if (fbin == AR5416_BCHAN_UNUSED)
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return fbin;
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return (uint16_t)((is2GHz) ? (2300 + fbin) : (4800 + 5 * fbin));
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}
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/*
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* Copy EEPROM Conformance Testing Limits contents
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* into the allocated space
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*/
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/* USE CTLS from chain zero */
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#define CTL_CHAIN 0
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static void
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v4kEepromReadCTLInfo(struct ath_hal *ah, HAL_EEPROM_v4k *ee)
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{
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RD_EDGES_POWER *rep = ee->ee_rdEdgesPower;
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int i, j;
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HALASSERT(AR5416_4K_NUM_CTLS <= sizeof(ee->ee_rdEdgesPower)/NUM_EDGES);
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for (i = 0; ee->ee_base.ctlIndex[i] != 0 && i < AR5416_4K_NUM_CTLS; i++) {
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for (j = 0; j < NUM_EDGES; j ++) {
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/* XXX Confirm this is the right thing to do when an invalid channel is stored */
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if (ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel == AR5416_BCHAN_UNUSED) {
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rep[j].rdEdge = 0;
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rep[j].twice_rdEdgePower = 0;
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rep[j].flag = 0;
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} else {
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rep[j].rdEdge = fbin2freq(
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ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel,
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(ee->ee_base.ctlIndex[i] & CTL_MODE_M) != CTL_11A);
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rep[j].twice_rdEdgePower = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_POWER);
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rep[j].flag = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_FLAG) != 0;
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}
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}
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rep += NUM_EDGES;
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}
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ee->ee_numCtls = i;
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HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
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"%s Numctls = %u\n",__func__,i);
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}
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/*
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* Reclaim any EEPROM-related storage.
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*/
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static void
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v4kEepromDetach(struct ath_hal *ah)
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{
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HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
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ath_hal_free(ee);
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AH_PRIVATE(ah)->ah_eeprom = AH_NULL;
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}
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#define owl_get_eep_ver(_ee) \
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(((_ee)->ee_base.baseEepHeader.version >> 12) & 0xF)
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#define owl_get_eep_rev(_ee) \
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(((_ee)->ee_base.baseEepHeader.version) & 0xFFF)
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HAL_STATUS
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ath_hal_v4kEepromAttach(struct ath_hal *ah)
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{
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#define NW(a) (sizeof(a) / sizeof(uint16_t))
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HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
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uint16_t *eep_data, magic;
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HAL_BOOL need_swap;
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u_int w, off, len;
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uint32_t sum;
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HALASSERT(ee == AH_NULL);
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/*
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* Don't check magic if we're supplied with an EEPROM block,
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* typically this is from Howl but it may also be from later
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* boards w/ an embedded WMAC.
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*/
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if (ah->ah_eepromdata == NULL) {
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if (!ath_hal_eepromRead(ah, AR5416_EEPROM_MAGIC_OFFSET, &magic)) {
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HALDEBUG(ah, HAL_DEBUG_ANY,
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"%s Error reading Eeprom MAGIC\n", __func__);
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return HAL_EEREAD;
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}
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}
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HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s Eeprom Magic = 0x%x\n",
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__func__, magic);
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if (magic != AR5416_EEPROM_MAGIC) {
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HALDEBUG(ah, HAL_DEBUG_ANY, "Bad magic number\n");
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return HAL_EEMAGIC;
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}
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ee = ath_hal_malloc(sizeof(HAL_EEPROM_v4k));
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if (ee == AH_NULL) {
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/* XXX message */
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return HAL_ENOMEM;
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}
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eep_data = (uint16_t *)&ee->ee_base;
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for (w = 0; w < NW(struct ar5416eeprom_4k); w++) {
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off = owl_eep_start_loc + w; /* NB: AP71 starts at 0 */
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if (!ath_hal_eepromRead(ah, off, &eep_data[w])) {
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HALDEBUG(ah, HAL_DEBUG_ANY,
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"%s eeprom read error at offset 0x%x\n",
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__func__, off);
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return HAL_EEREAD;
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}
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}
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/* Convert to eeprom native eeprom endian format */
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/*
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* XXX this is likely incorrect but will do for now
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* XXX to get embedded boards working.
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*/
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if (ah->ah_eepromdata == NULL && isBigEndian()) {
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for (w = 0; w < NW(struct ar5416eeprom_4k); w++)
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eep_data[w] = __bswap16(eep_data[w]);
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}
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/*
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* At this point, we're in the native eeprom endian format
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* Now, determine the eeprom endian by looking at byte 26??
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*/
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need_swap = ((ee->ee_base.baseEepHeader.eepMisc & AR5416_EEPMISC_BIG_ENDIAN) != 0) ^ isBigEndian();
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if (need_swap) {
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HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
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"Byte swap EEPROM contents.\n");
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len = __bswap16(ee->ee_base.baseEepHeader.length);
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} else {
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len = ee->ee_base.baseEepHeader.length;
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}
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len = AH_MIN(len, sizeof(struct ar5416eeprom_4k)) / sizeof(uint16_t);
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/* Apply the checksum, done in native eeprom format */
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/* XXX - Need to check to make sure checksum calculation is done
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* in the correct endian format. Right now, it seems it would
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* cast the raw data to host format and do the calculation, which may
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* not be correct as the calculation may need to be done in the native
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* eeprom format
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*/
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sum = 0;
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for (w = 0; w < len; w++) {
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sum ^= eep_data[w];
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}
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/* Check CRC - Attach should fail on a bad checksum */
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if (sum != 0xffff) {
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HALDEBUG(ah, HAL_DEBUG_ANY,
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"Bad EEPROM checksum 0x%x (Len=%u)\n", sum, len);
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return HAL_EEBADSUM;
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}
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if (need_swap)
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eepromSwap(&ee->ee_base); /* byte swap multi-byte data */
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/* swap words 0+2 so version is at the front */
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magic = eep_data[0];
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eep_data[0] = eep_data[2];
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eep_data[2] = magic;
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HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
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"%s Eeprom Version %u.%u\n", __func__,
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owl_get_eep_ver(ee), owl_get_eep_rev(ee));
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/* NB: must be after all byte swapping */
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if (owl_get_eep_ver(ee) != AR5416_EEP_VER) {
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HALDEBUG(ah, HAL_DEBUG_ANY,
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"Bad EEPROM version 0x%x\n", owl_get_eep_ver(ee));
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return HAL_EEBADSUM;
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}
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v4kEepromReadCTLInfo(ah, ee); /* Get CTLs */
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AH_PRIVATE(ah)->ah_eeprom = ee;
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AH_PRIVATE(ah)->ah_eeversion = ee->ee_base.baseEepHeader.version;
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AH_PRIVATE(ah)->ah_eepromDetach = v4kEepromDetach;
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AH_PRIVATE(ah)->ah_eepromGet = v4kEepromGet;
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AH_PRIVATE(ah)->ah_eepromSet = v4kEepromSet;
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AH_PRIVATE(ah)->ah_getSpurChan = v4kEepromGetSpurChan;
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AH_PRIVATE(ah)->ah_eepromDiag = v4kEepromDiag;
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return HAL_OK;
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#undef NW
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}
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