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wifi: ath11k: fill parameters for vdev set tpc power WMI command
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Prepare the parameters which are needed for WMI command WMI_VDEV_SET_TPC_POWER_CMDID.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23

Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20231218085844.2658-10-quic_bqiang@quicinc.com
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Wen Gong authored and Kalle Valo committed Jan 14, 2024
1 parent 46f20de commit 92425f7
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284 changes: 284 additions & 0 deletions drivers/net/wireless/ath/ath11k/mac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7667,6 +7667,290 @@ static u8 ath11k_mac_get_num_pwr_levels(struct cfg80211_chan_def *chan_def)
}
}

static u16 ath11k_mac_get_6ghz_start_frequency(struct cfg80211_chan_def *chan_def)
{
u16 diff_seq;

/* It is to get the lowest channel number's center frequency of the chan.
* For example,
* bandwidth=40 MHz, center frequency is 5965, lowest channel is 1
* with center frequency 5955, its diff is 5965 - 5955 = 10.
* bandwidth=80 MHz, center frequency is 5985, lowest channel is 1
* with center frequency 5955, its diff is 5985 - 5955 = 30.
* bandwidth=160 MHz, center frequency is 6025, lowest channel is 1
* with center frequency 5955, its diff is 6025 - 5955 = 70.
*/
switch (chan_def->width) {
case NL80211_CHAN_WIDTH_160:
diff_seq = 70;
break;
case NL80211_CHAN_WIDTH_80:
case NL80211_CHAN_WIDTH_80P80:
diff_seq = 30;
break;
case NL80211_CHAN_WIDTH_40:
diff_seq = 10;
break;
default:
diff_seq = 0;
}

return chan_def->center_freq1 - diff_seq;
}

static u16 ath11k_mac_get_seg_freq(struct cfg80211_chan_def *chan_def,
u16 start_seq, u8 seq)
{
u16 seg_seq;

/* It is to get the center frequency of the specific bandwidth.
* start_seq means the lowest channel number's center frequency.
* seq 0/1/2/3 means 20 MHz/40 MHz/80 MHz/160 MHz&80P80.
* For example,
* lowest channel is 1, its center frequency 5955,
* center frequency is 5955 when bandwidth=20 MHz, its diff is 5955 - 5955 = 0.
* lowest channel is 1, its center frequency 5955,
* center frequency is 5965 when bandwidth=40 MHz, its diff is 5965 - 5955 = 10.
* lowest channel is 1, its center frequency 5955,
* center frequency is 5985 when bandwidth=80 MHz, its diff is 5985 - 5955 = 30.
* lowest channel is 1, its center frequency 5955,
* center frequency is 6025 when bandwidth=160 MHz, its diff is 6025 - 5955 = 70.
*/
if (chan_def->width == NL80211_CHAN_WIDTH_80P80 && seq == 3)
return chan_def->center_freq2;

seg_seq = 10 * (BIT(seq) - 1);
return seg_seq + start_seq;
}

static void ath11k_mac_get_psd_channel(struct ath11k *ar,
u16 step_freq,
u16 *start_freq,
u16 *center_freq,
u8 i,
struct ieee80211_channel **temp_chan,
s8 *tx_power)
{
/* It is to get the center frequency for each 20 MHz.
* For example, if the chan is 160 MHz and center frequency is 6025,
* then it include 8 channels, they are 1/5/9/13/17/21/25/29,
* channel number 1's center frequency is 5955, it is parameter start_freq.
* parameter i is the step of the 8 channels. i is 0~7 for the 8 channels.
* the channel 1/5/9/13/17/21/25/29 maps i=0/1/2/3/4/5/6/7,
* and maps its center frequency is 5955/5975/5995/6015/6035/6055/6075/6095,
* the gap is 20 for each channel, parameter step_freq means the gap.
* after get the center frequency of each channel, it is easy to find the
* struct ieee80211_channel of it and get the max_reg_power.
*/
*center_freq = *start_freq + i * step_freq;
*temp_chan = ieee80211_get_channel(ar->hw->wiphy, *center_freq);
*tx_power = (*temp_chan)->max_reg_power;
}

static void ath11k_mac_get_eirp_power(struct ath11k *ar,
u16 *start_freq,
u16 *center_freq,
u8 i,
struct ieee80211_channel **temp_chan,
struct cfg80211_chan_def *def,
s8 *tx_power)
{
/* It is to get the center frequency for 20 MHz/40 MHz/80 MHz/
* 160 MHz&80P80 bandwidth, and then plus 10 to the center frequency,
* it is the center frequency of a channel number.
* For example, when configured channel number is 1.
* center frequency is 5965 when bandwidth=40 MHz, after plus 10, it is 5975,
* then it is channel number 5.
* center frequency is 5985 when bandwidth=80 MHz, after plus 10, it is 5995,
* then it is channel number 9.
* center frequency is 6025 when bandwidth=160 MHz, after plus 10, it is 6035,
* then it is channel number 17.
* after get the center frequency of each channel, it is easy to find the
* struct ieee80211_channel of it and get the max_reg_power.
*/
*center_freq = ath11k_mac_get_seg_freq(def, *start_freq, i);

/* For the 20 MHz, its center frequency is same with same channel */
if (i != 0)
*center_freq += 10;

*temp_chan = ieee80211_get_channel(ar->hw->wiphy, *center_freq);
*tx_power = (*temp_chan)->max_reg_power;
}

void ath11k_mac_fill_reg_tpc_info(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
{
struct ath11k_base *ab = ar->ab;
struct ath11k_vif *arvif = (void *)vif->drv_priv;
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
struct ath11k_reg_tpc_power_info *reg_tpc_info = &arvif->reg_tpc_info;
struct ieee80211_channel *chan, *temp_chan;
u8 pwr_lvl_idx, num_pwr_levels, pwr_reduction;
bool is_psd_power = false, is_tpe_present = false;
s8 max_tx_power[IEEE80211_MAX_NUM_PWR_LEVEL],
psd_power, tx_power, eirp_power;
u16 start_freq, center_freq;

chan = ctx->def.chan;
start_freq = ath11k_mac_get_6ghz_start_frequency(&ctx->def);
pwr_reduction = bss_conf->pwr_reduction;

if (arvif->reg_tpc_info.num_pwr_levels) {
is_tpe_present = true;
num_pwr_levels = arvif->reg_tpc_info.num_pwr_levels;
} else {
num_pwr_levels = ath11k_mac_get_num_pwr_levels(&ctx->def);
}

for (pwr_lvl_idx = 0; pwr_lvl_idx < num_pwr_levels; pwr_lvl_idx++) {
/* STA received TPE IE*/
if (is_tpe_present) {
/* local power is PSD power*/
if (chan->flags & IEEE80211_CHAN_PSD) {
/* Connecting AP is psd power */
if (reg_tpc_info->is_psd_power) {
is_psd_power = true;
ath11k_mac_get_psd_channel(ar, 20,
&start_freq,
&center_freq,
pwr_lvl_idx,
&temp_chan,
&tx_power);
psd_power = temp_chan->psd;
eirp_power = tx_power;
max_tx_power[pwr_lvl_idx] =
min_t(s8,
psd_power,
reg_tpc_info->tpe[pwr_lvl_idx]);
/* Connecting AP is not psd power */
} else {
ath11k_mac_get_eirp_power(ar,
&start_freq,
&center_freq,
pwr_lvl_idx,
&temp_chan,
&ctx->def,
&tx_power);
psd_power = temp_chan->psd;
/* convert psd power to EIRP power based
* on channel width
*/
tx_power =
min_t(s8, tx_power,
psd_power + 13 + pwr_lvl_idx * 3);
max_tx_power[pwr_lvl_idx] =
min_t(s8,
tx_power,
reg_tpc_info->tpe[pwr_lvl_idx]);
}
/* local power is not PSD power */
} else {
/* Connecting AP is psd power */
if (reg_tpc_info->is_psd_power) {
is_psd_power = true;
ath11k_mac_get_psd_channel(ar, 20,
&start_freq,
&center_freq,
pwr_lvl_idx,
&temp_chan,
&tx_power);
eirp_power = tx_power;
max_tx_power[pwr_lvl_idx] =
reg_tpc_info->tpe[pwr_lvl_idx];
/* Connecting AP is not psd power */
} else {
ath11k_mac_get_eirp_power(ar,
&start_freq,
&center_freq,
pwr_lvl_idx,
&temp_chan,
&ctx->def,
&tx_power);
max_tx_power[pwr_lvl_idx] =
min_t(s8,
tx_power,
reg_tpc_info->tpe[pwr_lvl_idx]);
}
}
/* STA not received TPE IE */
} else {
/* local power is PSD power*/
if (chan->flags & IEEE80211_CHAN_PSD) {
is_psd_power = true;
ath11k_mac_get_psd_channel(ar, 20,
&start_freq,
&center_freq,
pwr_lvl_idx,
&temp_chan,
&tx_power);
psd_power = temp_chan->psd;
eirp_power = tx_power;
max_tx_power[pwr_lvl_idx] = psd_power;
} else {
ath11k_mac_get_eirp_power(ar,
&start_freq,
&center_freq,
pwr_lvl_idx,
&temp_chan,
&ctx->def,
&tx_power);
max_tx_power[pwr_lvl_idx] = tx_power;
}
}

if (is_psd_power) {
/* If AP local power constraint is present */
if (pwr_reduction)
eirp_power = eirp_power - pwr_reduction;

/* If firmware updated max tx power is non zero, then take
* the min of firmware updated ap tx power
* and max power derived from above mentioned parameters.
*/
ath11k_dbg(ab, ATH11K_DBG_MAC,
"eirp power : %d firmware report power : %d\n",
eirp_power, ar->max_allowed_tx_power);
/* Firmware reports lower max_allowed_tx_power during vdev
* start response. In case of 6 GHz, firmware is not aware
* of EIRP power unless driver sets EIRP power through WMI
* TPC command. So radio which does not support idle power
* save can set maximum calculated EIRP power directly to
* firmware through TPC command without min comparison with
* vdev start response's max_allowed_tx_power.
*/
if (ar->max_allowed_tx_power && ab->hw_params.idle_ps)
eirp_power = min_t(s8,
eirp_power,
ar->max_allowed_tx_power);
} else {
/* If AP local power constraint is present */
if (pwr_reduction)
max_tx_power[pwr_lvl_idx] =
max_tx_power[pwr_lvl_idx] - pwr_reduction;
/* If firmware updated max tx power is non zero, then take
* the min of firmware updated ap tx power
* and max power derived from above mentioned parameters.
*/
if (ar->max_allowed_tx_power && ab->hw_params.idle_ps)
max_tx_power[pwr_lvl_idx] =
min_t(s8,
max_tx_power[pwr_lvl_idx],
ar->max_allowed_tx_power);
}
reg_tpc_info->chan_power_info[pwr_lvl_idx].chan_cfreq = center_freq;
reg_tpc_info->chan_power_info[pwr_lvl_idx].tx_power =
max_tx_power[pwr_lvl_idx];
}

reg_tpc_info->num_pwr_levels = num_pwr_levels;
reg_tpc_info->is_psd_power = is_psd_power;
reg_tpc_info->eirp_power = eirp_power;
reg_tpc_info->ap_power_type =
ath11k_reg_ap_pwr_convert(vif->bss_conf.power_type);
}

static void ath11k_mac_parse_tx_pwr_env(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
Expand Down
5 changes: 4 additions & 1 deletion drivers/net/wireless/ath/ath11k/mac.h
View file
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/* SPDX-License-Identifier: BSD-3-Clause-Clear */
/*
* Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
*/

#ifndef ATH11K_MAC_H
Expand Down Expand Up @@ -176,4 +176,7 @@ int ath11k_mac_wait_tx_complete(struct ath11k *ar);
int ath11k_mac_vif_set_keepalive(struct ath11k_vif *arvif,
enum wmi_sta_keepalive_method method,
u32 interval);
void ath11k_mac_fill_reg_tpc_info(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx);
#endif

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