/*
* Copyright ( c ) 2010 - 2011 Atheros Communications Inc .
*
* Permission to use , copy , modify , and / or distribute this software for any
* purpose with or without fee is hereby granted , provided that the above
* copyright notice and this permission notice appear in all copies .
*
* THE SOFTWARE IS PROVIDED " AS IS " AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS . IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL , DIRECT , INDIRECT , OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE , DATA OR PROFITS , WHETHER IN AN
* ACTION OF CONTRACT , NEGLIGENCE OR OTHER TORTIOUS ACTION , ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE .
*/
#include "hw.h"
#include "hw-ops.h"
#include "ar9003_phy.h"
#include "ar9003_rtt.h"
#define RTT_RESTORE_TIMEOUT 1000
#define RTT_ACCESS_TIMEOUT 100
#define RTT_BAD_VALUE 0 x0bad0bad
/*
* RTT ( Radio Retention Table ) hardware implementation information
*
* There is an internal table ( i . e . the rtt ) for each chain ( or bank ) .
* Each table contains 6 entries and each entry is corresponding to
* a specific calibration parameter as depicted below .
* 0 ~ 2 - DC offset DAC calibration : loop , low , high ( offsetI / Q_ . . . )
* 3 - Filter cal ( filterfc )
* 4 - RX gain settings
* 5 - Peak detector offset calibration ( agc_caldac )
*/
void ar9003_hw_rtt_enable(struct ath_hw *ah)
{
REG_WRITE(ah, AR_PHY_RTT_CTRL, 1 );
}
void ar9003_hw_rtt_disable(struct ath_hw *ah)
{
REG_WRITE(ah, AR_PHY_RTT_CTRL, 0 );
}
void ar9003_hw_rtt_set_mask(struct ath_hw *ah, u32 rtt_mask)
{
REG_RMW_FIELD(ah, AR_PHY_RTT_CTRL,
AR_PHY_RTT_CTRL_RESTORE_MASK, rtt_mask);
}
bool ar9003_hw_rtt_force_restore(struct ath_hw *ah)
{
if (!ath9k_hw_wait(ah, AR_PHY_RTT_CTRL,
AR_PHY_RTT_CTRL_FORCE_RADIO_RESTORE,
0 , RTT_RESTORE_TIMEOUT))
return false ;
REG_RMW_FIELD(ah, AR_PHY_RTT_CTRL,
AR_PHY_RTT_CTRL_FORCE_RADIO_RESTORE, 1 );
if (!ath9k_hw_wait(ah, AR_PHY_RTT_CTRL,
AR_PHY_RTT_CTRL_FORCE_RADIO_RESTORE,
0 , RTT_RESTORE_TIMEOUT))
return false ;
return true ;
}
static void ar9003_hw_rtt_load_hist_entry(struct ath_hw *ah, u8 chain,
u32 index, u32 data28)
{
u32 val;
val = SM(data28, AR_PHY_RTT_SW_RTT_TABLE_DATA);
REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_1_B(chain), val);
val = SM(0 , AR_PHY_RTT_SW_RTT_TABLE_ACCESS) |
SM(1 , AR_PHY_RTT_SW_RTT_TABLE_WRITE) |
SM(index, AR_PHY_RTT_SW_RTT_TABLE_ADDR);
REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val);
udelay(1 );
val |= SM(1 , AR_PHY_RTT_SW_RTT_TABLE_ACCESS);
REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val);
udelay(1 );
if (!ath9k_hw_wait(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain),
AR_PHY_RTT_SW_RTT_TABLE_ACCESS, 0 ,
RTT_ACCESS_TIMEOUT))
return ;
val &= ~SM(1 , AR_PHY_RTT_SW_RTT_TABLE_WRITE);
REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val);
udelay(1 );
ath9k_hw_wait(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain),
AR_PHY_RTT_SW_RTT_TABLE_ACCESS, 0 ,
RTT_ACCESS_TIMEOUT);
}
void ar9003_hw_rtt_load_hist(struct ath_hw *ah)
{
int chain, i;
for (chain = 0 ; chain < AR9300_MAX_CHAINS; chain++) {
if (!(ah->caps.rx_chainmask & (1 << chain)))
continue ;
for (i = 0 ; i < MAX_RTT_TABLE_ENTRY; i++) {
ar9003_hw_rtt_load_hist_entry(ah, chain, i,
ah->caldata->rtt_table[chain][i]);
ath_dbg(ath9k_hw_common(ah), CALIBRATE,
"Load RTT value at idx %d, chain %d: 0x%x\n" ,
i, chain, ah->caldata->rtt_table[chain][i]);
}
}
}
static void ar9003_hw_patch_rtt(struct ath_hw *ah, int index, int chain)
{
int agc, caldac;
if (!test_bit(SW_PKDET_DONE, &ah->caldata->cal_flags))
return ;
if ((index != 5 ) || (chain >= 2 ))
return ;
agc = REG_READ_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE);
if (!agc)
return ;
caldac = ah->caldata->caldac[chain];
ah->caldata->rtt_table[chain][index] &= 0 xFFFF05FF;
caldac = (caldac & 0 x20) | ((caldac & 0 x1F) << 7 );
ah->caldata->rtt_table[chain][index] |= (caldac << 4 );
}
static int ar9003_hw_rtt_fill_hist_entry(struct ath_hw *ah, u8 chain, u32 index)
{
u32 val;
val = SM(0 , AR_PHY_RTT_SW_RTT_TABLE_ACCESS) |
SM(0 , AR_PHY_RTT_SW_RTT_TABLE_WRITE) |
SM(index, AR_PHY_RTT_SW_RTT_TABLE_ADDR);
REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val);
udelay(1 );
val |= SM(1 , AR_PHY_RTT_SW_RTT_TABLE_ACCESS);
REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val);
udelay(1 );
if (!ath9k_hw_wait(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain),
AR_PHY_RTT_SW_RTT_TABLE_ACCESS, 0 ,
RTT_ACCESS_TIMEOUT))
return RTT_BAD_VALUE;
val = MS(REG_READ(ah, AR_PHY_RTT_TABLE_SW_INTF_1_B(chain)),
AR_PHY_RTT_SW_RTT_TABLE_DATA);
return val;
}
void ar9003_hw_rtt_fill_hist(struct ath_hw *ah)
{
int chain, i;
for (chain = 0 ; chain < AR9300_MAX_CHAINS; chain++) {
if (!(ah->caps.rx_chainmask & (1 << chain)))
continue ;
for (i = 0 ; i < MAX_RTT_TABLE_ENTRY; i++) {
ah->caldata->rtt_table[chain][i] =
ar9003_hw_rtt_fill_hist_entry(ah, chain, i);
ar9003_hw_patch_rtt(ah, i, chain);
ath_dbg(ath9k_hw_common(ah), CALIBRATE,
"RTT value at idx %d, chain %d is: 0x%x\n" ,
i, chain, ah->caldata->rtt_table[chain][i]);
}
}
set_bit(RTT_DONE, &ah->caldata->cal_flags);
}
void ar9003_hw_rtt_clear_hist(struct ath_hw *ah)
{
int chain, i;
for (chain = 0 ; chain < AR9300_MAX_CHAINS; chain++) {
if (!(ah->caps.rx_chainmask & (1 << chain)))
continue ;
for (i = 0 ; i < MAX_RTT_TABLE_ENTRY; i++)
ar9003_hw_rtt_load_hist_entry(ah, chain, i, 0 );
}
if (ah->caldata)
clear_bit(RTT_DONE, &ah->caldata->cal_flags);
}
bool ar9003_hw_rtt_restore(struct ath_hw *ah, struct ath9k_channel *chan)
{
bool restore;
if (!ah->caldata)
return false ;
if (test_bit(SW_PKDET_DONE, &ah->caldata->cal_flags)) {
if (IS_CHAN_2GHZ(chan)){
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(0 ),
AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR,
ah->caldata->caldac[0 ]);
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(1 ),
AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR,
ah->caldata->caldac[1 ]);
} else {
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(0 ),
AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR,
ah->caldata->caldac[0 ]);
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(1 ),
AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR,
ah->caldata->caldac[1 ]);
}
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(1 ),
AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0 x1);
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(0 ),
AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0 x1);
}
if (!test_bit(RTT_DONE, &ah->caldata->cal_flags))
return false ;
ar9003_hw_rtt_enable(ah);
if (test_bit(SW_PKDET_DONE, &ah->caldata->cal_flags))
ar9003_hw_rtt_set_mask(ah, 0 x30);
else
ar9003_hw_rtt_set_mask(ah, 0 x10);
if (!ath9k_hw_rfbus_req(ah)) {
ath_err(ath9k_hw_common(ah), "Could not stop baseband\n" );
restore = false ;
goto fail;
}
ar9003_hw_rtt_load_hist(ah);
restore = ar9003_hw_rtt_force_restore(ah);
fail:
ath9k_hw_rfbus_done(ah);
ar9003_hw_rtt_disable(ah);
return restore;
}
Messung V0.5 in Prozent C=100 H=83 G=91
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-03)
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