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https://github.com/torvalds/linux
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04cf53f465
For USB devices, reading the EEPROM data can be offloaded to the target. Use multiple register reads to take advantage of this feature to reduce initialization time. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
548 lines
14 KiB
C
548 lines
14 KiB
C
/*
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* Copyright (c) 2008-2009 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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#include "hw.h"
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static inline u16 ath9k_hw_fbin2freq(u8 fbin, bool is2GHz)
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{
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if (fbin == AR5416_BCHAN_UNUSED)
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return fbin;
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return (u16) ((is2GHz) ? (2300 + fbin) : (4800 + 5 * fbin));
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}
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void ath9k_hw_analog_shift_regwrite(struct ath_hw *ah, u32 reg, u32 val)
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{
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REG_WRITE(ah, reg, val);
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if (ah->config.analog_shiftreg)
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udelay(100);
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}
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void ath9k_hw_analog_shift_rmw(struct ath_hw *ah, u32 reg, u32 mask,
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u32 shift, u32 val)
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{
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u32 regVal;
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regVal = REG_READ(ah, reg) & ~mask;
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regVal |= (val << shift) & mask;
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REG_WRITE(ah, reg, regVal);
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if (ah->config.analog_shiftreg)
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udelay(100);
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}
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int16_t ath9k_hw_interpolate(u16 target, u16 srcLeft, u16 srcRight,
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int16_t targetLeft, int16_t targetRight)
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{
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int16_t rv;
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if (srcRight == srcLeft) {
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rv = targetLeft;
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} else {
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rv = (int16_t) (((target - srcLeft) * targetRight +
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(srcRight - target) * targetLeft) /
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(srcRight - srcLeft));
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}
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return rv;
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}
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bool ath9k_hw_get_lower_upper_index(u8 target, u8 *pList, u16 listSize,
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u16 *indexL, u16 *indexR)
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{
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u16 i;
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if (target <= pList[0]) {
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*indexL = *indexR = 0;
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return true;
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}
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if (target >= pList[listSize - 1]) {
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*indexL = *indexR = (u16) (listSize - 1);
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return true;
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}
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for (i = 0; i < listSize - 1; i++) {
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if (pList[i] == target) {
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*indexL = *indexR = i;
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return true;
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}
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if (target < pList[i + 1]) {
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*indexL = i;
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*indexR = (u16) (i + 1);
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return false;
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}
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}
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return false;
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}
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void ath9k_hw_usb_gen_fill_eeprom(struct ath_hw *ah, u16 *eep_data,
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int eep_start_loc, int size)
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{
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int i = 0, j, addr;
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u32 addrdata[8];
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u32 data[8];
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for (addr = 0; addr < size; addr++) {
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addrdata[i] = AR5416_EEPROM_OFFSET +
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((addr + eep_start_loc) << AR5416_EEPROM_S);
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i++;
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if (i == 8) {
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REG_READ_MULTI(ah, addrdata, data, i);
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for (j = 0; j < i; j++) {
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*eep_data = data[j];
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eep_data++;
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}
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i = 0;
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}
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}
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if (i != 0) {
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REG_READ_MULTI(ah, addrdata, data, i);
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for (j = 0; j < i; j++) {
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*eep_data = data[j];
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eep_data++;
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}
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}
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}
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bool ath9k_hw_nvram_read(struct ath_common *common, u32 off, u16 *data)
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{
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return common->bus_ops->eeprom_read(common, off, data);
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}
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void ath9k_hw_fill_vpd_table(u8 pwrMin, u8 pwrMax, u8 *pPwrList,
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u8 *pVpdList, u16 numIntercepts,
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u8 *pRetVpdList)
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{
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u16 i, k;
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u8 currPwr = pwrMin;
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u16 idxL = 0, idxR = 0;
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for (i = 0; i <= (pwrMax - pwrMin) / 2; i++) {
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ath9k_hw_get_lower_upper_index(currPwr, pPwrList,
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numIntercepts, &(idxL),
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&(idxR));
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if (idxR < 1)
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idxR = 1;
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if (idxL == numIntercepts - 1)
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idxL = (u16) (numIntercepts - 2);
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if (pPwrList[idxL] == pPwrList[idxR])
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k = pVpdList[idxL];
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else
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k = (u16)(((currPwr - pPwrList[idxL]) * pVpdList[idxR] +
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(pPwrList[idxR] - currPwr) * pVpdList[idxL]) /
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(pPwrList[idxR] - pPwrList[idxL]));
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pRetVpdList[i] = (u8) k;
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currPwr += 2;
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}
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}
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void ath9k_hw_get_legacy_target_powers(struct ath_hw *ah,
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struct ath9k_channel *chan,
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struct cal_target_power_leg *powInfo,
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u16 numChannels,
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struct cal_target_power_leg *pNewPower,
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u16 numRates, bool isExtTarget)
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{
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struct chan_centers centers;
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u16 clo, chi;
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int i;
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int matchIndex = -1, lowIndex = -1;
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u16 freq;
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ath9k_hw_get_channel_centers(ah, chan, ¢ers);
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freq = (isExtTarget) ? centers.ext_center : centers.ctl_center;
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if (freq <= ath9k_hw_fbin2freq(powInfo[0].bChannel,
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IS_CHAN_2GHZ(chan))) {
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matchIndex = 0;
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} else {
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for (i = 0; (i < numChannels) &&
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(powInfo[i].bChannel != AR5416_BCHAN_UNUSED); i++) {
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if (freq == ath9k_hw_fbin2freq(powInfo[i].bChannel,
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IS_CHAN_2GHZ(chan))) {
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matchIndex = i;
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break;
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} else if (freq < ath9k_hw_fbin2freq(powInfo[i].bChannel,
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IS_CHAN_2GHZ(chan)) && i > 0 &&
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freq > ath9k_hw_fbin2freq(powInfo[i - 1].bChannel,
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IS_CHAN_2GHZ(chan))) {
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lowIndex = i - 1;
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break;
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}
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}
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if ((matchIndex == -1) && (lowIndex == -1))
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matchIndex = i - 1;
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}
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if (matchIndex != -1) {
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*pNewPower = powInfo[matchIndex];
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} else {
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clo = ath9k_hw_fbin2freq(powInfo[lowIndex].bChannel,
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IS_CHAN_2GHZ(chan));
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chi = ath9k_hw_fbin2freq(powInfo[lowIndex + 1].bChannel,
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IS_CHAN_2GHZ(chan));
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for (i = 0; i < numRates; i++) {
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pNewPower->tPow2x[i] =
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(u8)ath9k_hw_interpolate(freq, clo, chi,
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powInfo[lowIndex].tPow2x[i],
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powInfo[lowIndex + 1].tPow2x[i]);
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}
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}
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}
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void ath9k_hw_get_target_powers(struct ath_hw *ah,
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struct ath9k_channel *chan,
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struct cal_target_power_ht *powInfo,
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u16 numChannels,
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struct cal_target_power_ht *pNewPower,
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u16 numRates, bool isHt40Target)
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{
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struct chan_centers centers;
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u16 clo, chi;
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int i;
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int matchIndex = -1, lowIndex = -1;
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u16 freq;
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ath9k_hw_get_channel_centers(ah, chan, ¢ers);
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freq = isHt40Target ? centers.synth_center : centers.ctl_center;
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if (freq <= ath9k_hw_fbin2freq(powInfo[0].bChannel, IS_CHAN_2GHZ(chan))) {
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matchIndex = 0;
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} else {
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for (i = 0; (i < numChannels) &&
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(powInfo[i].bChannel != AR5416_BCHAN_UNUSED); i++) {
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if (freq == ath9k_hw_fbin2freq(powInfo[i].bChannel,
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IS_CHAN_2GHZ(chan))) {
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matchIndex = i;
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break;
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} else
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if (freq < ath9k_hw_fbin2freq(powInfo[i].bChannel,
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IS_CHAN_2GHZ(chan)) && i > 0 &&
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freq > ath9k_hw_fbin2freq(powInfo[i - 1].bChannel,
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IS_CHAN_2GHZ(chan))) {
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lowIndex = i - 1;
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break;
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}
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}
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if ((matchIndex == -1) && (lowIndex == -1))
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matchIndex = i - 1;
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}
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if (matchIndex != -1) {
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*pNewPower = powInfo[matchIndex];
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} else {
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clo = ath9k_hw_fbin2freq(powInfo[lowIndex].bChannel,
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IS_CHAN_2GHZ(chan));
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chi = ath9k_hw_fbin2freq(powInfo[lowIndex + 1].bChannel,
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IS_CHAN_2GHZ(chan));
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for (i = 0; i < numRates; i++) {
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pNewPower->tPow2x[i] = (u8)ath9k_hw_interpolate(freq,
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clo, chi,
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powInfo[lowIndex].tPow2x[i],
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powInfo[lowIndex + 1].tPow2x[i]);
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}
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}
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}
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u16 ath9k_hw_get_max_edge_power(u16 freq, struct cal_ctl_edges *pRdEdgesPower,
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bool is2GHz, int num_band_edges)
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{
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u16 twiceMaxEdgePower = MAX_RATE_POWER;
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int i;
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for (i = 0; (i < num_band_edges) &&
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(pRdEdgesPower[i].bChannel != AR5416_BCHAN_UNUSED); i++) {
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if (freq == ath9k_hw_fbin2freq(pRdEdgesPower[i].bChannel, is2GHz)) {
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twiceMaxEdgePower = CTL_EDGE_TPOWER(pRdEdgesPower[i].ctl);
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break;
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} else if ((i > 0) &&
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(freq < ath9k_hw_fbin2freq(pRdEdgesPower[i].bChannel,
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is2GHz))) {
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if (ath9k_hw_fbin2freq(pRdEdgesPower[i - 1].bChannel,
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is2GHz) < freq &&
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CTL_EDGE_FLAGS(pRdEdgesPower[i - 1].ctl)) {
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twiceMaxEdgePower =
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CTL_EDGE_TPOWER(pRdEdgesPower[i - 1].ctl);
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}
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break;
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}
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}
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return twiceMaxEdgePower;
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}
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void ath9k_hw_update_regulatory_maxpower(struct ath_hw *ah)
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{
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
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switch (ar5416_get_ntxchains(ah->txchainmask)) {
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case 1:
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break;
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case 2:
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regulatory->max_power_level += INCREASE_MAXPOW_BY_TWO_CHAIN;
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break;
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case 3:
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regulatory->max_power_level += INCREASE_MAXPOW_BY_THREE_CHAIN;
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break;
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default:
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ath_dbg(common, ATH_DBG_EEPROM,
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"Invalid chainmask configuration\n");
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break;
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}
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}
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void ath9k_hw_get_gain_boundaries_pdadcs(struct ath_hw *ah,
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struct ath9k_channel *chan,
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void *pRawDataSet,
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u8 *bChans, u16 availPiers,
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u16 tPdGainOverlap,
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u16 *pPdGainBoundaries, u8 *pPDADCValues,
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u16 numXpdGains)
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{
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int i, j, k;
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int16_t ss;
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u16 idxL = 0, idxR = 0, numPiers;
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static u8 vpdTableL[AR5416_NUM_PD_GAINS]
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[AR5416_MAX_PWR_RANGE_IN_HALF_DB];
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static u8 vpdTableR[AR5416_NUM_PD_GAINS]
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[AR5416_MAX_PWR_RANGE_IN_HALF_DB];
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static u8 vpdTableI[AR5416_NUM_PD_GAINS]
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[AR5416_MAX_PWR_RANGE_IN_HALF_DB];
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u8 *pVpdL, *pVpdR, *pPwrL, *pPwrR;
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u8 minPwrT4[AR5416_NUM_PD_GAINS];
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u8 maxPwrT4[AR5416_NUM_PD_GAINS];
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int16_t vpdStep;
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int16_t tmpVal;
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u16 sizeCurrVpdTable, maxIndex, tgtIndex;
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bool match;
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int16_t minDelta = 0;
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struct chan_centers centers;
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int pdgain_boundary_default;
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struct cal_data_per_freq *data_def = pRawDataSet;
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struct cal_data_per_freq_4k *data_4k = pRawDataSet;
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struct cal_data_per_freq_ar9287 *data_9287 = pRawDataSet;
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bool eeprom_4k = AR_SREV_9285(ah) || AR_SREV_9271(ah);
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int intercepts;
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if (AR_SREV_9287(ah))
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intercepts = AR9287_PD_GAIN_ICEPTS;
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else
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intercepts = AR5416_PD_GAIN_ICEPTS;
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memset(&minPwrT4, 0, AR5416_NUM_PD_GAINS);
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ath9k_hw_get_channel_centers(ah, chan, ¢ers);
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for (numPiers = 0; numPiers < availPiers; numPiers++) {
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if (bChans[numPiers] == AR5416_BCHAN_UNUSED)
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break;
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}
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match = ath9k_hw_get_lower_upper_index((u8)FREQ2FBIN(centers.synth_center,
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IS_CHAN_2GHZ(chan)),
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bChans, numPiers, &idxL, &idxR);
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if (match) {
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if (AR_SREV_9287(ah)) {
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/* FIXME: array overrun? */
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for (i = 0; i < numXpdGains; i++) {
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minPwrT4[i] = data_9287[idxL].pwrPdg[i][0];
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maxPwrT4[i] = data_9287[idxL].pwrPdg[i][4];
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ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
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data_9287[idxL].pwrPdg[i],
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data_9287[idxL].vpdPdg[i],
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intercepts,
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vpdTableI[i]);
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}
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} else if (eeprom_4k) {
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for (i = 0; i < numXpdGains; i++) {
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minPwrT4[i] = data_4k[idxL].pwrPdg[i][0];
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maxPwrT4[i] = data_4k[idxL].pwrPdg[i][4];
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ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
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data_4k[idxL].pwrPdg[i],
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data_4k[idxL].vpdPdg[i],
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intercepts,
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vpdTableI[i]);
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}
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} else {
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for (i = 0; i < numXpdGains; i++) {
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minPwrT4[i] = data_def[idxL].pwrPdg[i][0];
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maxPwrT4[i] = data_def[idxL].pwrPdg[i][4];
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ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
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data_def[idxL].pwrPdg[i],
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data_def[idxL].vpdPdg[i],
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intercepts,
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vpdTableI[i]);
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}
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}
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} else {
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for (i = 0; i < numXpdGains; i++) {
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if (AR_SREV_9287(ah)) {
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pVpdL = data_9287[idxL].vpdPdg[i];
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pPwrL = data_9287[idxL].pwrPdg[i];
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pVpdR = data_9287[idxR].vpdPdg[i];
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pPwrR = data_9287[idxR].pwrPdg[i];
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} else if (eeprom_4k) {
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pVpdL = data_4k[idxL].vpdPdg[i];
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pPwrL = data_4k[idxL].pwrPdg[i];
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pVpdR = data_4k[idxR].vpdPdg[i];
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pPwrR = data_4k[idxR].pwrPdg[i];
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} else {
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pVpdL = data_def[idxL].vpdPdg[i];
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pPwrL = data_def[idxL].pwrPdg[i];
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pVpdR = data_def[idxR].vpdPdg[i];
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pPwrR = data_def[idxR].pwrPdg[i];
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}
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minPwrT4[i] = max(pPwrL[0], pPwrR[0]);
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maxPwrT4[i] =
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min(pPwrL[intercepts - 1],
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pPwrR[intercepts - 1]);
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ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
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pPwrL, pVpdL,
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intercepts,
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vpdTableL[i]);
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ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
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pPwrR, pVpdR,
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intercepts,
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vpdTableR[i]);
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for (j = 0; j <= (maxPwrT4[i] - minPwrT4[i]) / 2; j++) {
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vpdTableI[i][j] =
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(u8)(ath9k_hw_interpolate((u16)
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FREQ2FBIN(centers.
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synth_center,
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IS_CHAN_2GHZ
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(chan)),
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bChans[idxL], bChans[idxR],
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vpdTableL[i][j], vpdTableR[i][j]));
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}
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}
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}
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k = 0;
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for (i = 0; i < numXpdGains; i++) {
|
|
if (i == (numXpdGains - 1))
|
|
pPdGainBoundaries[i] =
|
|
(u16)(maxPwrT4[i] / 2);
|
|
else
|
|
pPdGainBoundaries[i] =
|
|
(u16)((maxPwrT4[i] + minPwrT4[i + 1]) / 4);
|
|
|
|
pPdGainBoundaries[i] =
|
|
min((u16)MAX_RATE_POWER, pPdGainBoundaries[i]);
|
|
|
|
if ((i == 0) && !AR_SREV_5416_20_OR_LATER(ah)) {
|
|
minDelta = pPdGainBoundaries[0] - 23;
|
|
pPdGainBoundaries[0] = 23;
|
|
} else {
|
|
minDelta = 0;
|
|
}
|
|
|
|
if (i == 0) {
|
|
if (AR_SREV_9280_20_OR_LATER(ah))
|
|
ss = (int16_t)(0 - (minPwrT4[i] / 2));
|
|
else
|
|
ss = 0;
|
|
} else {
|
|
ss = (int16_t)((pPdGainBoundaries[i - 1] -
|
|
(minPwrT4[i] / 2)) -
|
|
tPdGainOverlap + 1 + minDelta);
|
|
}
|
|
vpdStep = (int16_t)(vpdTableI[i][1] - vpdTableI[i][0]);
|
|
vpdStep = (int16_t)((vpdStep < 1) ? 1 : vpdStep);
|
|
|
|
while ((ss < 0) && (k < (AR5416_NUM_PDADC_VALUES - 1))) {
|
|
tmpVal = (int16_t)(vpdTableI[i][0] + ss * vpdStep);
|
|
pPDADCValues[k++] = (u8)((tmpVal < 0) ? 0 : tmpVal);
|
|
ss++;
|
|
}
|
|
|
|
sizeCurrVpdTable = (u8) ((maxPwrT4[i] - minPwrT4[i]) / 2 + 1);
|
|
tgtIndex = (u8)(pPdGainBoundaries[i] + tPdGainOverlap -
|
|
(minPwrT4[i] / 2));
|
|
maxIndex = (tgtIndex < sizeCurrVpdTable) ?
|
|
tgtIndex : sizeCurrVpdTable;
|
|
|
|
while ((ss < maxIndex) && (k < (AR5416_NUM_PDADC_VALUES - 1))) {
|
|
pPDADCValues[k++] = vpdTableI[i][ss++];
|
|
}
|
|
|
|
vpdStep = (int16_t)(vpdTableI[i][sizeCurrVpdTable - 1] -
|
|
vpdTableI[i][sizeCurrVpdTable - 2]);
|
|
vpdStep = (int16_t)((vpdStep < 1) ? 1 : vpdStep);
|
|
|
|
if (tgtIndex >= maxIndex) {
|
|
while ((ss <= tgtIndex) &&
|
|
(k < (AR5416_NUM_PDADC_VALUES - 1))) {
|
|
tmpVal = (int16_t)((vpdTableI[i][sizeCurrVpdTable - 1] +
|
|
(ss - maxIndex + 1) * vpdStep));
|
|
pPDADCValues[k++] = (u8)((tmpVal > 255) ?
|
|
255 : tmpVal);
|
|
ss++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (eeprom_4k)
|
|
pdgain_boundary_default = 58;
|
|
else
|
|
pdgain_boundary_default = pPdGainBoundaries[i - 1];
|
|
|
|
while (i < AR5416_PD_GAINS_IN_MASK) {
|
|
pPdGainBoundaries[i] = pdgain_boundary_default;
|
|
i++;
|
|
}
|
|
|
|
while (k < AR5416_NUM_PDADC_VALUES) {
|
|
pPDADCValues[k] = pPDADCValues[k - 1];
|
|
k++;
|
|
}
|
|
}
|
|
|
|
int ath9k_hw_eeprom_init(struct ath_hw *ah)
|
|
{
|
|
int status;
|
|
|
|
if (AR_SREV_9300_20_OR_LATER(ah))
|
|
ah->eep_ops = &eep_ar9300_ops;
|
|
else if (AR_SREV_9287(ah)) {
|
|
ah->eep_ops = &eep_ar9287_ops;
|
|
} else if (AR_SREV_9285(ah) || AR_SREV_9271(ah)) {
|
|
ah->eep_ops = &eep_4k_ops;
|
|
} else {
|
|
ah->eep_ops = &eep_def_ops;
|
|
}
|
|
|
|
if (!ah->eep_ops->fill_eeprom(ah))
|
|
return -EIO;
|
|
|
|
status = ah->eep_ops->check_eeprom(ah);
|
|
|
|
return status;
|
|
}
|