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-rw-r--r--drivers/net/wireless/realtek/rtw88/Makefile1
-rw-r--r--drivers/net/wireless/realtek/rtw88/debug.c12
-rw-r--r--drivers/net/wireless/realtek/rtw88/mac80211.c12
-rw-r--r--drivers/net/wireless/realtek/rtw88/main.c22
-rw-r--r--drivers/net/wireless/realtek/rtw88/main.h30
-rw-r--r--drivers/net/wireless/realtek/rtw88/phy.c63
-rw-r--r--drivers/net/wireless/realtek/rtw88/phy.h1
-rw-r--r--drivers/net/wireless/realtek/rtw88/sar.c114
-rw-r--r--drivers/net/wireless/realtek/rtw88/sar.h22
9 files changed, 257 insertions, 20 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/Makefile b/drivers/net/wireless/realtek/rtw88/Makefile
index 73d6807a8cdf..834c66ec0af9 100644
--- a/drivers/net/wireless/realtek/rtw88/Makefile
+++ b/drivers/net/wireless/realtek/rtw88/Makefile
@@ -15,6 +15,7 @@ rtw88_core-y += main.o \
ps.o \
sec.o \
bf.o \
+ sar.o \
regd.o
rtw88_core-$(CONFIG_PM) += wow.o
diff --git a/drivers/net/wireless/realtek/rtw88/debug.c b/drivers/net/wireless/realtek/rtw88/debug.c
index b863c74b51e6..e429428232c1 100644
--- a/drivers/net/wireless/realtek/rtw88/debug.c
+++ b/drivers/net/wireless/realtek/rtw88/debug.c
@@ -634,8 +634,8 @@ static int rtw_debugfs_get_tx_pwr_tbl(struct seq_file *m, void *v)
seq_printf(m, "channel: %u\n", ch);
seq_printf(m, "bandwidth: %u\n", bw);
seq_printf(m, "regulatory: %s\n", rtw_get_regd_string(regd));
- seq_printf(m, "%-4s %-10s %-3s%6s %-4s %4s (%-4s %-4s) %-4s\n",
- "path", "rate", "pwr", "", "base", "", "byr", "lmt", "rem");
+ seq_printf(m, "%-4s %-10s %-9s %-9s (%-4s %-4s %-4s) %-4s\n",
+ "path", "rate", "pwr", "base", "byr", "lmt", "sar", "rem");
mutex_lock(&hal->tx_power_mutex);
for (path = RF_PATH_A; path <= RF_PATH_B; path++) {
@@ -657,13 +657,15 @@ static int rtw_debugfs_get_tx_pwr_tbl(struct seq_file *m, void *v)
seq_printf(m, "%4c ", path + 'A');
rtw_print_rate(m, rate);
- seq_printf(m, " %3u(0x%02x) %4u %4d (%4d %4d) %4d\n",
+ seq_printf(m, " %3u(0x%02x) %4u %4d (%4d %4d %4d) %4d\n",
hal->tx_pwr_tbl[path][rate],
hal->tx_pwr_tbl[path][rate],
pwr_param.pwr_base,
- min_t(s8, pwr_param.pwr_offset,
- pwr_param.pwr_limit),
+ min3(pwr_param.pwr_offset,
+ pwr_param.pwr_limit,
+ pwr_param.pwr_sar),
pwr_param.pwr_offset, pwr_param.pwr_limit,
+ pwr_param.pwr_sar,
pwr_param.pwr_remnant);
}
}
diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c
index 5c01c40f248f..ae7d97de5fdf 100644
--- a/drivers/net/wireless/realtek/rtw88/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw88/mac80211.c
@@ -13,6 +13,7 @@
#include "bf.h"
#include "debug.h"
#include "wow.h"
+#include "sar.h"
static void rtw_ops_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
@@ -836,6 +837,16 @@ static void rtw_ops_cancel_hw_scan(struct ieee80211_hw *hw,
mutex_unlock(&rtwdev->mutex);
}
+static int rtw_ops_set_sar_specs(struct ieee80211_hw *hw,
+ const struct cfg80211_sar_specs *sar)
+{
+ struct rtw_dev *rtwdev = hw->priv;
+
+ rtw_set_sar_specs(rtwdev, sar);
+
+ return 0;
+}
+
const struct ieee80211_ops rtw_ops = {
.tx = rtw_ops_tx,
.wake_tx_queue = rtw_ops_wake_tx_queue,
@@ -865,6 +876,7 @@ const struct ieee80211_ops rtw_ops = {
.reconfig_complete = rtw_reconfig_complete,
.hw_scan = rtw_ops_hw_scan,
.cancel_hw_scan = rtw_ops_cancel_hw_scan,
+ .set_sar_specs = rtw_ops_set_sar_specs,
#ifdef CONFIG_PM
.suspend = rtw_ops_suspend,
.resume = rtw_ops_resume,
diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
index b569a67cfb01..38252113c4a8 100644
--- a/drivers/net/wireless/realtek/rtw88/main.c
+++ b/drivers/net/wireless/realtek/rtw88/main.c
@@ -17,6 +17,7 @@
#include "tx.h"
#include "debug.h"
#include "bf.h"
+#include "sar.h"
bool rtw_disable_lps_deep_mode;
EXPORT_SYMBOL(rtw_disable_lps_deep_mode);
@@ -751,6 +752,25 @@ void rtw_set_channel(struct rtw_dev *rtwdev)
hal->current_primary_channel_index = primary_chan_idx;
hal->current_band_type = center_chan > 14 ? RTW_BAND_5G : RTW_BAND_2G;
+ switch (center_chan) {
+ case 1 ... 14:
+ hal->sar_band = RTW_SAR_BAND_0;
+ break;
+ case 36 ... 64:
+ hal->sar_band = RTW_SAR_BAND_1;
+ break;
+ case 100 ... 144:
+ hal->sar_band = RTW_SAR_BAND_3;
+ break;
+ case 149 ... 177:
+ hal->sar_band = RTW_SAR_BAND_4;
+ break;
+ default:
+ WARN(1, "unknown ch(%u) to SAR band\n", center_chan);
+ hal->sar_band = RTW_SAR_BAND_0;
+ break;
+ }
+
for (i = RTW_CHANNEL_WIDTH_20; i <= RTW_MAX_CHANNEL_WIDTH; i++)
hal->cch_by_bw[i] = ch_param.cch_by_bw[i];
@@ -2037,6 +2057,8 @@ int rtw_register_hw(struct rtw_dev *rtwdev, struct ieee80211_hw *hw)
rtw_set_supported_band(hw, rtwdev->chip);
SET_IEEE80211_PERM_ADDR(hw, rtwdev->efuse.addr);
+ hw->wiphy->sar_capa = &rtw_sar_capa;
+
ret = rtw_regd_init(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to init regd\n");
diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index ff7570c28c4f..dc1cd9bd4b8a 100644
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -1813,6 +1813,33 @@ struct rtw_fw_state {
u32 feature;
};
+enum rtw_sar_sources {
+ RTW_SAR_SOURCE_NONE,
+ RTW_SAR_SOURCE_COMMON,
+};
+
+enum rtw_sar_bands {
+ RTW_SAR_BAND_0,
+ RTW_SAR_BAND_1,
+ /* RTW_SAR_BAND_2, not used now */
+ RTW_SAR_BAND_3,
+ RTW_SAR_BAND_4,
+
+ RTW_SAR_BAND_NR,
+};
+
+/* the union is reserved for other knids of SAR sources
+ * which might not re-use same format with array common.
+ */
+union rtw_sar_cfg {
+ s8 common[RTW_SAR_BAND_NR];
+};
+
+struct rtw_sar {
+ enum rtw_sar_sources src;
+ union rtw_sar_cfg cfg[RTW_RF_PATH_MAX][RTW_RATE_SECTION_MAX];
+};
+
struct rtw_hal {
u32 rcr;
@@ -1861,6 +1888,9 @@ struct rtw_hal {
[RTW_MAX_CHANNEL_NUM_5G];
s8 tx_pwr_tbl[RTW_RF_PATH_MAX]
[DESC_RATE_MAX];
+
+ enum rtw_sar_bands sar_band;
+ struct rtw_sar sar;
};
struct rtw_path_div {
diff --git a/drivers/net/wireless/realtek/rtw88/phy.c b/drivers/net/wireless/realtek/rtw88/phy.c
index bfddfcbe63f5..e505d17f107e 100644
--- a/drivers/net/wireless/realtek/rtw88/phy.c
+++ b/drivers/net/wireless/realtek/rtw88/phy.c
@@ -10,6 +10,7 @@
#include "phy.h"
#include "debug.h"
#include "regd.h"
+#include "sar.h"
struct phy_cfg_pair {
u32 addr;
@@ -2004,6 +2005,25 @@ static u8 rtw_phy_get_5g_tx_power_index(struct rtw_dev *rtwdev,
return tx_power;
}
+/* return RTW_RATE_SECTION_MAX to indicate rate is invalid */
+static u8 rtw_phy_rate_to_rate_section(u8 rate)
+{
+ if (rate >= DESC_RATE1M && rate <= DESC_RATE11M)
+ return RTW_RATE_SECTION_CCK;
+ else if (rate >= DESC_RATE6M && rate <= DESC_RATE54M)
+ return RTW_RATE_SECTION_OFDM;
+ else if (rate >= DESC_RATEMCS0 && rate <= DESC_RATEMCS7)
+ return RTW_RATE_SECTION_HT_1S;
+ else if (rate >= DESC_RATEMCS8 && rate <= DESC_RATEMCS15)
+ return RTW_RATE_SECTION_HT_2S;
+ else if (rate >= DESC_RATEVHT1SS_MCS0 && rate <= DESC_RATEVHT1SS_MCS9)
+ return RTW_RATE_SECTION_VHT_1S;
+ else if (rate >= DESC_RATEVHT2SS_MCS0 && rate <= DESC_RATEVHT2SS_MCS9)
+ return RTW_RATE_SECTION_VHT_2S;
+ else
+ return RTW_RATE_SECTION_MAX;
+}
+
static s8 rtw_phy_get_tx_power_limit(struct rtw_dev *rtwdev, u8 band,
enum rtw_bandwidth bw, u8 rf_path,
u8 rate, u8 channel, u8 regd)
@@ -2011,7 +2031,7 @@ static s8 rtw_phy_get_tx_power_limit(struct rtw_dev *rtwdev, u8 band,
struct rtw_hal *hal = &rtwdev->hal;
u8 *cch_by_bw = hal->cch_by_bw;
s8 power_limit = (s8)rtwdev->chip->max_power_index;
- u8 rs;
+ u8 rs = rtw_phy_rate_to_rate_section(rate);
int ch_idx;
u8 cur_bw, cur_ch;
s8 cur_lmt;
@@ -2019,19 +2039,7 @@ static s8 rtw_phy_get_tx_power_limit(struct rtw_dev *rtwdev, u8 band,
if (regd > RTW_REGD_WW)
return power_limit;
- if (rate >= DESC_RATE1M && rate <= DESC_RATE11M)
- rs = RTW_RATE_SECTION_CCK;
- else if (rate >= DESC_RATE6M && rate <= DESC_RATE54M)
- rs = RTW_RATE_SECTION_OFDM;
- else if (rate >= DESC_RATEMCS0 && rate <= DESC_RATEMCS7)
- rs = RTW_RATE_SECTION_HT_1S;
- else if (rate >= DESC_RATEMCS8 && rate <= DESC_RATEMCS15)
- rs = RTW_RATE_SECTION_HT_2S;
- else if (rate >= DESC_RATEVHT1SS_MCS0 && rate <= DESC_RATEVHT1SS_MCS9)
- rs = RTW_RATE_SECTION_VHT_1S;
- else if (rate >= DESC_RATEVHT2SS_MCS0 && rate <= DESC_RATEVHT2SS_MCS9)
- rs = RTW_RATE_SECTION_VHT_2S;
- else
+ if (rs == RTW_RATE_SECTION_MAX)
goto err;
/* only 20M BW with cck and ofdm */
@@ -2065,6 +2073,27 @@ err:
return (s8)rtwdev->chip->max_power_index;
}
+static s8 rtw_phy_get_tx_power_sar(struct rtw_dev *rtwdev, u8 sar_band,
+ u8 rf_path, u8 rate)
+{
+ u8 rs = rtw_phy_rate_to_rate_section(rate);
+ struct rtw_sar_arg arg = {
+ .sar_band = sar_band,
+ .path = rf_path,
+ .rs = rs,
+ };
+
+ if (rs == RTW_RATE_SECTION_MAX)
+ goto err;
+
+ return rtw_query_sar(rtwdev, &arg);
+
+err:
+ WARN(1, "invalid arguments, sar_band=%d, path=%d, rate=%d\n",
+ sar_band, rf_path, rate);
+ return (s8)rtwdev->chip->max_power_index;
+}
+
void rtw_get_tx_power_params(struct rtw_dev *rtwdev, u8 path, u8 rate, u8 bw,
u8 ch, u8 regd, struct rtw_power_params *pwr_param)
{
@@ -2076,6 +2105,7 @@ void rtw_get_tx_power_params(struct rtw_dev *rtwdev, u8 path, u8 rate, u8 bw,
s8 *offset = &pwr_param->pwr_offset;
s8 *limit = &pwr_param->pwr_limit;
s8 *remnant = &pwr_param->pwr_remnant;
+ s8 *sar = &pwr_param->pwr_sar;
pwr_idx = &rtwdev->efuse.txpwr_idx_table[path];
group = rtw_get_channel_group(ch, rate);
@@ -2099,6 +2129,7 @@ void rtw_get_tx_power_params(struct rtw_dev *rtwdev, u8 path, u8 rate, u8 bw,
rate, ch, regd);
*remnant = (rate <= DESC_RATE11M ? dm_info->txagc_remnant_cck :
dm_info->txagc_remnant_ofdm);
+ *sar = rtw_phy_get_tx_power_sar(rtwdev, hal->sar_band, path, rate);
}
u8
@@ -2113,7 +2144,9 @@ rtw_phy_get_tx_power_index(struct rtw_dev *rtwdev, u8 rf_path, u8 rate,
channel, regd, &pwr_param);
tx_power = pwr_param.pwr_base;
- offset = min_t(s8, pwr_param.pwr_offset, pwr_param.pwr_limit);
+ offset = min3(pwr_param.pwr_offset,
+ pwr_param.pwr_limit,
+ pwr_param.pwr_sar);
if (rtwdev->chip->en_dis_dpd)
offset += rtw_phy_get_dis_dpd_by_rate_diff(rtwdev, rate);
diff --git a/drivers/net/wireless/realtek/rtw88/phy.h b/drivers/net/wireless/realtek/rtw88/phy.h
index 02d1ec47ffb1..b6c5ae60a462 100644
--- a/drivers/net/wireless/realtek/rtw88/phy.h
+++ b/drivers/net/wireless/realtek/rtw88/phy.h
@@ -148,6 +148,7 @@ struct rtw_power_params {
s8 pwr_offset;
s8 pwr_limit;
s8 pwr_remnant;
+ s8 pwr_sar;
};
void
diff --git a/drivers/net/wireless/realtek/rtw88/sar.c b/drivers/net/wireless/realtek/rtw88/sar.c
new file mode 100644
index 000000000000..3383726c4d90
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtw88/sar.c
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright(c) 2018-2021 Realtek Corporation
+ */
+
+#include "sar.h"
+#include "phy.h"
+#include "debug.h"
+
+s8 rtw_query_sar(struct rtw_dev *rtwdev, const struct rtw_sar_arg *arg)
+{
+ const struct rtw_hal *hal = &rtwdev->hal;
+ const struct rtw_sar *sar = &hal->sar;
+
+ switch (sar->src) {
+ default:
+ rtw_warn(rtwdev, "unknown SAR source: %d\n", sar->src);
+ fallthrough;
+ case RTW_SAR_SOURCE_NONE:
+ return (s8)rtwdev->chip->max_power_index;
+ case RTW_SAR_SOURCE_COMMON:
+ return sar->cfg[arg->path][arg->rs].common[arg->sar_band];
+ }
+}
+
+static int rtw_apply_sar(struct rtw_dev *rtwdev, const struct rtw_sar *new)
+{
+ struct rtw_hal *hal = &rtwdev->hal;
+ struct rtw_sar *sar = &hal->sar;
+
+ if (sar->src != RTW_SAR_SOURCE_NONE && new->src != sar->src) {
+ rtw_warn(rtwdev, "SAR source: %d is in use\n", sar->src);
+ return -EBUSY;
+ }
+
+ *sar = *new;
+ rtw_phy_set_tx_power_level(rtwdev, hal->current_channel);
+
+ return 0;
+}
+
+static s8 rtw_sar_to_phy(struct rtw_dev *rtwdev, u8 fct, s32 sar,
+ const struct rtw_sar_arg *arg)
+{
+ struct rtw_hal *hal = &rtwdev->hal;
+ u8 txgi = rtwdev->chip->txgi_factor;
+ u8 max = rtwdev->chip->max_power_index;
+ s32 tmp;
+ s8 base;
+
+ tmp = fct > txgi ? sar >> (fct - txgi) : sar << (txgi - fct);
+ base = arg->sar_band == RTW_SAR_BAND_0 ?
+ hal->tx_pwr_by_rate_base_2g[arg->path][arg->rs] :
+ hal->tx_pwr_by_rate_base_5g[arg->path][arg->rs];
+
+ return (s8)clamp_t(s32, tmp, -max - 1, max) - base;
+}
+
+static const struct cfg80211_sar_freq_ranges rtw_common_sar_freq_ranges[] = {
+ [RTW_SAR_BAND_0] = { .start_freq = 2412, .end_freq = 2484, },
+ [RTW_SAR_BAND_1] = { .start_freq = 5180, .end_freq = 5320, },
+ [RTW_SAR_BAND_3] = { .start_freq = 5500, .end_freq = 5720, },
+ [RTW_SAR_BAND_4] = { .start_freq = 5745, .end_freq = 5825, },
+};
+
+static_assert(ARRAY_SIZE(rtw_common_sar_freq_ranges) == RTW_SAR_BAND_NR);
+
+const struct cfg80211_sar_capa rtw_sar_capa = {
+ .type = NL80211_SAR_TYPE_POWER,
+ .num_freq_ranges = RTW_SAR_BAND_NR,
+ .freq_ranges = rtw_common_sar_freq_ranges,
+};
+
+int rtw_set_sar_specs(struct rtw_dev *rtwdev,
+ const struct cfg80211_sar_specs *sar)
+{
+ struct rtw_sar_arg arg = {0};
+ struct rtw_sar new = {0};
+ u32 idx, i, j, k;
+ s32 power;
+ s8 val;
+
+ if (sar->type != NL80211_SAR_TYPE_POWER)
+ return -EINVAL;
+
+ memset(&new, rtwdev->chip->max_power_index, sizeof(new));
+ new.src = RTW_SAR_SOURCE_COMMON;
+
+ for (i = 0; i < sar->num_sub_specs; i++) {
+ idx = sar->sub_specs[i].freq_range_index;
+ if (idx >= RTW_SAR_BAND_NR)
+ return -EINVAL;
+
+ power = sar->sub_specs[i].power;
+ rtw_info(rtwdev, "On freq %u to %u, set SAR %d in 1/%lu dBm\n",
+ rtw_common_sar_freq_ranges[idx].start_freq,
+ rtw_common_sar_freq_ranges[idx].end_freq,
+ power, BIT(RTW_COMMON_SAR_FCT));
+
+ for (j = 0; j < RTW_RF_PATH_MAX; j++) {
+ for (k = 0; k < RTW_RATE_SECTION_MAX; k++) {
+ arg = (struct rtw_sar_arg){
+ .sar_band = idx,
+ .path = j,
+ .rs = k,
+ };
+ val = rtw_sar_to_phy(rtwdev, RTW_COMMON_SAR_FCT,
+ power, &arg);
+ new.cfg[j][k].common[idx] = val;
+ }
+ }
+ }
+
+ return rtw_apply_sar(rtwdev, &new);
+}
diff --git a/drivers/net/wireless/realtek/rtw88/sar.h b/drivers/net/wireless/realtek/rtw88/sar.h
new file mode 100644
index 000000000000..e01e7bb790b7
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtw88/sar.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/* Copyright(c) 2018-2021 Realtek Corporation
+ */
+
+#include "main.h"
+
+/* NL80211_SAR_TYPE_POWER means unit is in 0.25 dBm,
+ * where 0.25 = 1/4 = 2^(-2), so make factor 2.
+ */
+#define RTW_COMMON_SAR_FCT 2
+
+struct rtw_sar_arg {
+ u8 sar_band;
+ u8 path;
+ u8 rs;
+};
+
+extern const struct cfg80211_sar_capa rtw_sar_capa;
+
+s8 rtw_query_sar(struct rtw_dev *rtwdev, const struct rtw_sar_arg *arg);
+int rtw_set_sar_specs(struct rtw_dev *rtwdev,
+ const struct cfg80211_sar_specs *sar);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.