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rtw88: update regulartory mapping and adaptivity

PATCH In review Ping-Ke Shih 2 participants 6 messages Aug 30, 2021 – Sep 21, 2021 Realtek wireless driver (rtw88)

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Ping-Ke Shih

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#0 lore raw

v2 cover rtw88: update regulartory mapping and adaptivity

Mapping table of regulatory, which manages tx power limit, is updated, and we update the mapping architecture according to this change. In order to choose proper regulatory domain from this table, we regard efuse value and regulatory hint. With proper regulatory domain, we can have adaptivity for ETSI/JP DFS region, and also have a firmware version of adaptivity.

v2:
- avoid acronyms in commit message
- add a comment to explain the use of rtw_edcca_enabled

Chin-Yen Lee (1):
rtw88: move adaptivity mechanism to firmware

Zong-Zhe Yang (3):
rtw88: upgrade rtw_regulatory mechanism and mapping
rtw88: add regulatory strategy by chip type
rtw88: support adaptivity for ETSI/JP DFS region

 drivers/net/wireless/realtek/rtw88/debug.c    |  41 +-
 drivers/net/wireless/realtek/rtw88/debug.h    |   1 +
 drivers/net/wireless/realtek/rtw88/fw.c       |  47 ++
 drivers/net/wireless/realtek/rtw88/fw.h       |  24 +
 drivers/net/wireless/realtek/rtw88/main.c     |  21 +-
 drivers/net/wireless/realtek/rtw88/main.h     |  48 +-
 drivers/net/wireless/realtek/rtw88/phy.c      | 119 ++-
 drivers/net/wireless/realtek/rtw88/phy.h      |   2 +
 drivers/net/wireless/realtek/rtw88/reg.h      |   5 +
 drivers/net/wireless/realtek/rtw88/regd.c     | 753 ++++++++++--------
 drivers/net/wireless/realtek/rtw88/regd.h     |   8 +-
 drivers/net/wireless/realtek/rtw88/rtw8821c.c |   3 +-
 drivers/net/wireless/realtek/rtw88/rtw8822b.c |  46 +-
 drivers/net/wireless/realtek/rtw88/rtw8822b.h |   8 +
 drivers/net/wireless/realtek/rtw88/rtw8822c.c |  47 ++
 drivers/net/wireless/realtek/rtw88/rtw8822c.h |   3 +
 16 files changed, 851 insertions(+), 325 deletions(-)
Signature · 1 line
2.25.1
author maintainer
#1 lore raw

PATCH v2 1/4 rtw88: upgrade rtw_regulatory mechanism and mapping

From: Zong-Zhe Yang <[email protected]>

Mapping table from country code to rtw_regulatory, which manages tx power limit according to countries, is updated. And mapping architecture is also upgraded. For more precise control on tx power limit, it allows different rtw_regulatory for different bands logically. Besides, a helper function to query rtw_regulatory for current band under current country is provided.

For older chips, some newly added rtw_regulatory may not be configured. To avoid that those chips have no limit on some countries mapping to a newer rtw_regulatory after table update, a backward selection mechanism of rtw_regulatory is introduced. It can help chips use a rtw_regulatory which has been configured as an alternative of a newer one which is not configured.

In addition, rtw88 actually doesn't manage channel plans by itself. Instead, it follows them from stack. So, correct some naming about chplan with regd, and remove the unnecessary channel control for now.

---
 drivers/net/wireless/realtek/rtw88/debug.c    |   3 +-
 drivers/net/wireless/realtek/rtw88/main.h     |   4 +-
 drivers/net/wireless/realtek/rtw88/phy.c      |  56 +-
 drivers/net/wireless/realtek/rtw88/regd.c     | 595 +++++++++---------
 drivers/net/wireless/realtek/rtw88/regd.h     |   2 +
 drivers/net/wireless/realtek/rtw88/rtw8821c.c |   3 +-
 drivers/net/wireless/realtek/rtw88/rtw8822b.c |   3 +-
 7 files changed, 371 insertions(+), 295 deletions(-)
drivers/net/wireless/realtek/rtw88/debug.c +2 -1
index dfd52cff5d02..df0740e84f04 100644
@@ -12,6 +12,7 @@
 #include "phy.h"
 #include "reg.h"
 #include "ps.h"
+#include "regd.h"
 
 #ifdef CONFIG_RTW88_DEBUGFS
 
@@ -587,7 +588,7 @@ static int rtw_debugfs_get_tx_pwr_tbl(struct seq_file *m, void *v)
 	struct rtw_power_params pwr_param = {0};
 	u8 bw = hal->current_band_width;
 	u8 ch = hal->current_channel;
-	u8 regd = rtwdev->regd.txpwr_regd;
+	u8 regd = rtw_regd_get(rtwdev);
 
 	seq_printf(m, "regulatory: %s\n", rtw_get_regd_string(regd));
 	seq_printf(m, "%-4s %-10s %-3s%6s %-4s %4s (%-4s %-4s) %-4s\n",
drivers/net/wireless/realtek/rtw88/main.h +2 -2
index 56812127a053..0d1bbc7e34a8 100644
@@ -800,8 +800,8 @@ struct rtw_vif {
 
 struct rtw_regulatory {
 	char alpha2[2];
-	u8 chplan;
-	u8 txpwr_regd;
+	u8 txpwr_regd_2g;
+	u8 txpwr_regd_5g;
 };
 
 struct rtw_chip_ops {
drivers/net/wireless/realtek/rtw88/phy.c +55 -1

85 lines not on this page · raw message

drivers/net/wireless/realtek/rtw88/regd.c +306 -289

633 lines not on this page · raw message

drivers/net/wireless/realtek/rtw88/regd.h +2 -0
index 5d4578331788..18b54ac65a2d 100644
@@ -68,4 +68,6 @@ int rtw_regd_init(struct rtw_dev *rtwdev,
 		  void (*reg_notifier)(struct wiphy *wiphy,
 				       struct regulatory_request *request));
 void rtw_regd_notifier(struct wiphy *wiphy, struct regulatory_request *request);
+u8 rtw_regd_get(struct rtw_dev *rtwdev);
+bool rtw_regd_has_alt(u8 regd, u8 *regd_alt);
 #endif
drivers/net/wireless/realtek/rtw88/rtw8821c.c +2 -1
index 785b8181513f..349eef1a0ff2 100644
@@ -14,6 +14,7 @@
 #include "reg.h"
 #include "debug.h"
 #include "bf.h"
+#include "regd.h"
 
 static const s8 lna_gain_table_0[8] = {22, 8, -6, -22, -31, -40, -46, -52};
 static const s8 lna_gain_table_1[16] = {10, 6, 2, -2, -6, -10, -14, -17,
@@ -993,7 +994,7 @@ static void rtw8821c_pwrtrack_set(struct rtw_dev *rtwdev)
 	s8 pwr_idx_offset_lower;
 	u8 channel = rtwdev->hal.current_channel;
 	u8 band_width = rtwdev->hal.current_band_width;
-	u8 regd = rtwdev->regd.txpwr_regd;
+	u8 regd = rtw_regd_get(rtwdev);
 	u8 tx_rate = dm_info->tx_rate;
 	u8 max_pwr_idx = rtwdev->chip->max_power_index;
 
drivers/net/wireless/realtek/rtw88/rtw8822b.c +2 -1
index f1789155e901..49e8420ab33e 100644
@@ -15,6 +15,7 @@
 #include "reg.h"
 #include "debug.h"
 #include "bf.h"
+#include "regd.h"
 
 static void rtw8822b_config_trx_mode(struct rtw_dev *rtwdev, u8 tx_path,
 				     u8 rx_path, bool is_tx2_path);
@@ -1436,7 +1437,7 @@ static void rtw8822b_pwrtrack_set(struct rtw_dev *rtwdev, u8 path)
 	u8 pwr_idx_offset, tx_pwr_idx;
 	u8 channel = rtwdev->hal.current_channel;
 	u8 band_width = rtwdev->hal.current_band_width;
-	u8 regd = rtwdev->regd.txpwr_regd;
+	u8 regd = rtw_regd_get(rtwdev);
 	u8 tx_rate = dm_info->tx_rate;
 	u8 max_pwr_idx = rtwdev->chip->max_power_index;
 
Signature · 1 line
2.25.1
#2 lore raw

Re: [PATCH v2 1/4] rtw88: upgrade rtw_regulatory mechanism and mapping

Quoted 15 lines · Ping-Ke Shih

From: Zong-Zhe Yang <[email protected]>

Mapping table from country code to rtw_regulatory, which manages tx power limit according to countries, is updated. And mapping architecture is also upgraded. For more precise control on tx power limit, it allows different rtw_regulatory for different bands logically. Besides, a helper function to query rtw_regulatory for current band under current country is provided.

For older chips, some newly added rtw_regulatory may not be configured. To avoid that those chips have no limit on some countries mapping to a newer rtw_regulatory after table update, a backward selection mechanism of rtw_regulatory is introduced. It can help chips use a rtw_regulatory which has been configured as an alternative of a newer one which is not configured.

Quoted 6 lines

In addition, rtw88 actually doesn't manage channel plans by itself. Instead, it follows them from stack. So, correct some naming about chplan with regd, and remove the unnecessary channel control for now.

4 patches applied to wireless-drivers-next.git, thanks.

f8509c38ecec rtw88: upgrade rtw_regulatory mechanism and mapping 8d4fb3998c05 rtw88: add regulatory strategy by chip type 7285eb9693a2 rtw88: support adaptivity for ETSI/JP DFS region fe7bc23a8c5e rtw88: move adaptivity mechanism to firmware

Signature · 3 lines
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
author maintainer
#3 lore raw

PATCH v2 2/4 rtw88: add regulatory strategy by chip type

In reply to Ping-Ke Shih

From: Zong-Zhe Yang <[email protected]>

Realtek chips can program a specific country domain on efuse to indicate what is the expected rtw_regulatory. For chips with a programmed country domain, we set REGULATORY_STRICT_REG to tell stack to consider follow-up regulatory_hint() as the superset of our regulatory rule. Besides, on driver side, only the request via NL80211_REGDOM_SET_BY_DRIVER, which matches programmed country domain, will be handled to keep rtw_regulatory unchanged.

For worldwide roaming chips, i.e. ones without a specific programmed country domain, system of distro can set expected regulatory via NL80211_REGDOM_SET_BY_USER. With setting from it, rtw_regulatory will handle the requests only via NL80211_REGDOM_SET_BY_USER to follow setting from system of distro. REGULATORY_COUNTRY_IE_IGNORE will then be set to tell stack to ignore country IE for us. The restrictions mentioned above will remain until 00, i.e. worldwide, is set via NL80211_REGDOM_SET_BY_USER.

On the other hand, for worldwide roamin chips, if there is no specific regulatory set via NL80211_REGDOM_SET_BY_USER, requests from all regulatory notifications will be handled by rtw_regulatory. And REGULATORY_COUNTRY_IE_IGNORE won't be set.

---
 drivers/net/wireless/realtek/rtw88/main.c |  13 +-
 drivers/net/wireless/realtek/rtw88/main.h |  15 +-
 drivers/net/wireless/realtek/rtw88/regd.c | 180 +++++++++++++++++-----
 drivers/net/wireless/realtek/rtw88/regd.h |   6 +-
 4 files changed, 171 insertions(+), 43 deletions(-)
drivers/net/wireless/realtek/rtw88/main.c +10 -3
index 6bb55e663fc3..f458496bddd5 100644
@@ -1964,7 +1964,11 @@ 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);
 
-	rtw_regd_init(rtwdev, rtw_regd_notifier);
+	ret = rtw_regd_init(rtwdev);
+	if (ret) {
+		rtw_err(rtwdev, "failed to init regd\n");
+		return ret;
+	}
 
 	ret = ieee80211_register_hw(hw);
 	if (ret) {
@@ -1972,8 +1976,11 @@ int rtw_register_hw(struct rtw_dev *rtwdev, struct ieee80211_hw *hw)
 		return ret;
 	}
 
-	if (regulatory_hint(hw->wiphy, rtwdev->regd.alpha2))
-		rtw_err(rtwdev, "regulatory_hint fail\n");
+	ret = rtw_regd_hint(rtwdev);
+	if (ret) {
+		rtw_err(rtwdev, "failed to hint regd\n");
+		return ret;
+	}
 
 	rtw_debugfs_init(rtwdev);
 
drivers/net/wireless/realtek/rtw88/main.h +14 -1
index 0d1bbc7e34a8..2e5cebba1f21 100644
@@ -804,6 +804,19 @@ struct rtw_regulatory {
 	u8 txpwr_regd_5g;
 };
 
+enum rtw_regd_state {
+	RTW_REGD_STATE_WORLDWIDE,
+	RTW_REGD_STATE_PROGRAMMED,
+	RTW_REGD_STATE_SETTING,
+
+	RTW_REGD_STATE_NR,
+};
+
+struct rtw_regd {
+	enum rtw_regd_state state;
+	const struct rtw_regulatory *regulatory;
+};
+
 struct rtw_chip_ops {
 	int (*mac_init)(struct rtw_dev *rtwdev);
 	int (*dump_fw_crash)(struct rtw_dev *rtwdev);
@@ -1833,7 +1846,7 @@ struct rtw_dev {
 	struct rtw_efuse efuse;
 	struct rtw_sec_desc sec;
 	struct rtw_traffic_stats stats;
-	struct rtw_regulatory regd;
+	struct rtw_regd regd;
 	struct rtw_bf_info bf_info;
 
 	struct rtw_dm_info dm_info;
drivers/net/wireless/realtek/rtw88/regd.c +145 -35

234 lines not on this page · raw message

drivers/net/wireless/realtek/rtw88/regd.h +2 -4
index 18b54ac65a2d..34cb13d0cd9e 100644
@@ -64,10 +64,8 @@ enum country_code_type {
 	COUNTRY_CODE_MAX
 };
 
-int rtw_regd_init(struct rtw_dev *rtwdev,
-		  void (*reg_notifier)(struct wiphy *wiphy,
-				       struct regulatory_request *request));
-void rtw_regd_notifier(struct wiphy *wiphy, struct regulatory_request *request);
+int rtw_regd_init(struct rtw_dev *rtwdev);
+int rtw_regd_hint(struct rtw_dev *rtwdev);
 u8 rtw_regd_get(struct rtw_dev *rtwdev);
 bool rtw_regd_has_alt(u8 regd, u8 *regd_alt);
 #endif
Signature · 1 line
2.25.1
author maintainer
#4 lore raw

PATCH v2 3/4 rtw88: support adaptivity for ETSI/JP DFS region

In reply to Ping-Ke Shih

From: Zong-Zhe Yang <[email protected]>

Add Energy Detected CCA (EDCCA) mechanism to detect energy on the channel. And EDCCA support adaptivity mode now. From MIC Ordinance Regulating Radio Equipment article 49.20, ETSI EN-300-328 and EN-301-893, the device should be able to dynamically pause TX activity when energy detected on the air. According to ETSI/JP DFS region, driver will set corresponding threshold and stop TX activity if the detected energy exceeds the threshold. For now, we support it on 8822b and 8822c first.

By default, EDCCA mechanism is turned on. For ETSI/JP DFS region, it will turn to adaptivity mode. However, with adaptivity, if environment is too noisy, TX may often be halted. So, a debugfs for EDCCA is added. It can show what EDCCA mode is used currently. And EDCCA mechanism can be turned on/off through the debugfs while debugging.

---
 drivers/net/wireless/realtek/rtw88/debug.c    | 38 ++++++++++++
 drivers/net/wireless/realtek/rtw88/main.c     |  8 +++
 drivers/net/wireless/realtek/rtw88/main.h     | 29 +++++++++
 drivers/net/wireless/realtek/rtw88/phy.c      | 59 +++++++++++++++++++
 drivers/net/wireless/realtek/rtw88/phy.h      |  2 +
 drivers/net/wireless/realtek/rtw88/reg.h      |  2 +
 drivers/net/wireless/realtek/rtw88/regd.c     |  8 ++-
 drivers/net/wireless/realtek/rtw88/rtw8822b.c | 43 ++++++++++++++
 drivers/net/wireless/realtek/rtw88/rtw8822b.h |  8 +++
 drivers/net/wireless/realtek/rtw88/rtw8822c.c | 47 +++++++++++++++
 drivers/net/wireless/realtek/rtw88/rtw8822c.h |  3 +
 11 files changed, 245 insertions(+), 2 deletions(-)
drivers/net/wireless/realtek/rtw88/debug.c +38 -0
index df0740e84f04..babf7fb238cc 100644
@@ -829,6 +829,38 @@ static int rtw_debugfs_get_coex_enable(struct seq_file *m, void *v)
 	return 0;
 }
 
+static ssize_t rtw_debugfs_set_edcca_enable(struct file *filp,
+					    const char __user *buffer,
+					    size_t count, loff_t *loff)
+{
+	struct seq_file *seqpriv = (struct seq_file *)filp->private_data;
+	struct rtw_debugfs_priv *debugfs_priv = seqpriv->private;
+	struct rtw_dev *rtwdev = debugfs_priv->rtwdev;
+	bool input;
+	int err;
+
+	err = kstrtobool_from_user(buffer, count, &input);
+	if (err)
+		return err;
+
+	rtw_edcca_enabled = input;
+	rtw_phy_adaptivity_set_mode(rtwdev);
+
+	return count;
+}
+
+static int rtw_debugfs_get_edcca_enable(struct seq_file *m, void *v)
+{
+	struct rtw_debugfs_priv *debugfs_priv = m->private;
+	struct rtw_dev *rtwdev = debugfs_priv->rtwdev;
+	struct rtw_dm_info *dm_info = &rtwdev->dm_info;
+
+	seq_printf(m, "EDCCA %s: EDCCA mode %d\n",
+		   rtw_edcca_enabled ? "enabled" : "disabled",
+		   dm_info->edcca_mode);
+	return 0;
+}
+
 static ssize_t rtw_debugfs_set_fw_crash(struct file *filp,
 					const char __user *buffer,
 					size_t count, loff_t *loff)
@@ -1049,6 +1081,11 @@ static struct rtw_debugfs_priv rtw_debug_priv_coex_info = {
 	.cb_read = rtw_debugfs_get_coex_info,
 };
 
+static struct rtw_debugfs_priv rtw_debug_priv_edcca_enable = {
+	.cb_write = rtw_debugfs_set_edcca_enable,
+	.cb_read = rtw_debugfs_get_edcca_enable,
+};
+
 static struct rtw_debugfs_priv rtw_debug_priv_fw_crash = {
 	.cb_write = rtw_debugfs_set_fw_crash,
 	.cb_read = rtw_debugfs_get_fw_crash,
@@ -1132,6 +1169,7 @@ void rtw_debugfs_init(struct rtw_dev *rtwdev)
 	}
 	rtw_debugfs_add_r(rf_dump);
 	rtw_debugfs_add_r(tx_pwr_tbl);
+	rtw_debugfs_add_rw(edcca_enable);
 	rtw_debugfs_add_rw(fw_crash);
 	rtw_debugfs_add_rw(dm_cap);
 }
drivers/net/wireless/realtek/rtw88/main.c +8 -0
index f458496bddd5..cee2acabb042 100644
@@ -23,6 +23,14 @@ EXPORT_SYMBOL(rtw_disable_lps_deep_mode);
 bool rtw_bf_support = true;
 unsigned int rtw_debug_mask;
 EXPORT_SYMBOL(rtw_debug_mask);
+/* EDCCA is enabled during normal behavior. For debugging purpose in
+ * a noisy environment, it can be disabled via edcca debugfs. Because
+ * all rtw88 devices will probably be affected if environment is noisy,
+ * rtw_edcca_enabled is just declared by driver instead of by device.
+ * So, turning it off will take effect for all rtw88 devices before
+ * there is a tough reason to maintain rtw_edcca_enabled by device.
+ */
+bool rtw_edcca_enabled = true;
 
 module_param_named(disable_lps_deep, rtw_disable_lps_deep_mode, bool, 0644);
 module_param_named(support_bf, rtw_bf_support, bool, 0644);
drivers/net/wireless/realtek/rtw88/main.h +29 -0
index 2e5cebba1f21..723316347876 100644
@@ -41,6 +41,7 @@
 extern bool rtw_bf_support;
 extern bool rtw_disable_lps_deep_mode;
 extern unsigned int rtw_debug_mask;
+extern bool rtw_edcca_enabled;
 extern const struct ieee80211_ops rtw_ops;
 
 #define RTW_MAX_CHANNEL_NUM_2G 14
@@ -545,6 +546,11 @@ struct rtw_rf_sipi_addr {
 	u32 lssi_read_pi;
 };
 
+struct rtw_hw_reg_offset {
+	struct rtw_hw_reg hw_reg;
+	u8 offset;
+};
+
 struct rtw_backup_info {
 	u8 len;
 	u32 reg;
@@ -815,6 +821,7 @@ enum rtw_regd_state {
 struct rtw_regd {
 	enum rtw_regd_state state;
 	const struct rtw_regulatory *regulatory;
+	enum nl80211_dfs_regions dfs_region;
 };
 
 struct rtw_chip_ops {
@@ -852,6 +859,8 @@ struct rtw_chip_ops {
 			      struct ieee80211_bss_conf *conf);
 	void (*cfg_csi_rate)(struct rtw_dev *rtwdev, u8 rssi, u8 cur_rate,
 			     u8 fixrate_en, u8 *new_rate);
+	void (*adaptivity_init)(struct rtw_dev *rtwdev);
+	void (*adaptivity)(struct rtw_dev *rtwdev);
 	void (*cfo_init)(struct rtw_dev *rtwdev);
 	void (*cfo_track)(struct rtw_dev *rtwdev);
 	void (*config_tx_path)(struct rtw_dev *rtwdev, u8 tx_path,
@@ -1207,6 +1216,10 @@ struct rtw_chip_info {
 	u8 bfer_su_max_num;
 	u8 bfer_mu_max_num;
 
+	struct rtw_hw_reg_offset *edcca_th;
+	s8 l2h_th_ini_cs;
+	s8 l2h_th_ini_ad;
+
 	const char *wow_fw_name;
 	const struct wiphy_wowlan_support *wowlan_stub;
 	const u8 max_sched_scan_ssids;
@@ -1555,6 +1568,20 @@ struct rtw_gapk_info {
 	u8 channel;
 };
 
+#define EDCCA_TH_L2H_IDX 0
+#define EDCCA_TH_H2L_IDX 1
+#define EDCCA_TH_L2H_LB 48
+#define EDCCA_ADC_BACKOFF 12
+#define EDCCA_IGI_BASE 50
+#define EDCCA_IGI_L2H_DIFF 8
+#define EDCCA_L2H_H2L_DIFF 7
+#define EDCCA_L2H_H2L_DIFF_NORMAL 8
+
+enum rtw_edcca_mode {
+	RTW_EDCCA_NORMAL	= 0,
+	RTW_EDCCA_ADAPTIVITY	= 1,
+};
+
 struct rtw_cfo_track {
 	bool is_adjust;
 	u8 crystal_cap;
@@ -1646,6 +1673,8 @@ struct rtw_dm_info {
 	struct rtw_gapk_info gapk;
 	bool is_bt_iqk_timeout;
 
+	s8 l2h_th_ini;
+	enum rtw_edcca_mode edcca_mode;
 	u8 scan_density;
 };
 
drivers/net/wireless/realtek/rtw88/phy.c +59 -0

77 lines not on this page · raw message

drivers/net/wireless/realtek/rtw88/phy.h +2 -0
index 112ed125970a..02d1ec47ffb1 100644
@@ -59,6 +59,8 @@ bool rtw_phy_pwrtrack_need_lck(struct rtw_dev *rtwdev);
 bool rtw_phy_pwrtrack_need_iqk(struct rtw_dev *rtwdev);
 void rtw_phy_config_swing_table(struct rtw_dev *rtwdev,
 				struct rtw_swing_table *swing_table);
+void rtw_phy_set_edcca_th(struct rtw_dev *rtwdev, u8 l2h, u8 h2l);
+void rtw_phy_adaptivity_set_mode(struct rtw_dev *rtwdev);
 void rtw_phy_parsing_cfo(struct rtw_dev *rtwdev,
 			 struct rtw_rx_pkt_stat *pkt_stat);
 void rtw_phy_tx_path_diversity(struct rtw_dev *rtwdev);
drivers/net/wireless/realtek/rtw88/reg.h +2 -0
index f5ce75095e90..8adac30ee08e 100644
@@ -361,10 +361,12 @@
 #define REG_AGGR_BREAK_TIME	0x051A
 #define REG_SLOT		0x051B
 #define REG_TX_PTCL_CTRL	0x0520
+#define BIT_DIS_EDCCA		BIT(15)
 #define BIT_SIFS_BK_EN		BIT(12)
 #define REG_TXPAUSE		0x0522
 #define BIT_AC_QUEUE		GENMASK(7, 0)
 #define REG_RD_CTRL		0x0524
+#define BIT_EDCCA_MSK_CNTDOWN_EN BIT(11)
 #define BIT_DIS_TXOP_CFE	BIT(10)
 #define BIT_DIS_LSIG_CFE	BIT(9)
 #define BIT_DIS_STBC_CFE	BIT(8)
drivers/net/wireless/realtek/rtw88/regd.c +6 -2
index cd50f419f85d..315c2b193e92 100644
@@ -18,12 +18,13 @@ do {								\
 	struct rtw_dev *__d = (_dev);				\
 	const struct rtw_regd *__r =  &__d->regd;		\
 	rtw_dbg(__d, RTW_DBG_REGD, _msg				\
-		"apply alpha2 %c%c, regd {%d, %d}\n",		\
+		"apply alpha2 %c%c, regd {%d, %d}, dfs_region %d\n",\
 		##_args,					\
 		__r->regulatory->alpha2[0],			\
 		__r->regulatory->alpha2[1],			\
 		__r->regulatory->txpwr_regd_2g,			\
-		__r->regulatory->txpwr_regd_5g);		\
+		__r->regulatory->txpwr_regd_5g,			\
+		__r->dfs_region);				\
 } while (0)
 
 /* If country code is not correctly defined in efuse,
@@ -357,6 +358,7 @@ int rtw_regd_init(struct rtw_dev *rtwdev)
 	}
 
 	rtwdev->regd.regulatory = &rtw_reg_ww;
+	rtwdev->regd.dfs_region = NL80211_DFS_UNSET;
 	rtw_dbg_regd_dump(rtwdev, "regd init state %d: ", rtwdev->regd.state);
 
 	rtw_regd_apply_hw_cap_flags(wiphy);
@@ -450,6 +452,7 @@ static bool rtw_regd_state_hdl(struct rtw_dev *rtwdev,
 			       struct regulatory_request *request)
 {
 	next_regd->regulatory = rtw_reg_find_by_name(request->alpha2);
+	next_regd->dfs_region = request->dfs_region;
 	return rtw_regd_handler[rtwdev->regd.state](rtwdev, next_regd, request);
 }
 
@@ -482,6 +485,7 @@ void rtw_regd_notifier(struct wiphy *wiphy, struct regulatory_request *request)
 			  request->alpha2[1],
 			  request->initiator);
 
+	rtw_phy_adaptivity_set_mode(rtwdev);
 	rtw_phy_set_tx_power_level(rtwdev, hal->current_channel);
 }
 
drivers/net/wireless/realtek/rtw88/rtw8822b.c +43 -0

67 lines not on this page · raw message

drivers/net/wireless/realtek/rtw88/rtw8822b.h +8 -0
index 6211f4b547b9..3fff8b881854 100644
@@ -140,6 +140,8 @@ _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
 #define GET_PHY_STAT_P1_RXSNR_B(phy_stat)                                      \
 	le32_get_bits(*((__le32 *)(phy_stat) + 0x06), GENMASK(15, 8))
 
+#define RTW8822B_EDCCA_MAX	0x7f
+#define RTW8822B_EDCCA_SRC_DEF	1
 #define REG_HTSTFWT	0x800
 #define REG_RXPSEL	0x808
 #define BIT_RX_PSEL_RST		(BIT(28) | BIT(29))
@@ -152,11 +154,17 @@ _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
 #define REG_L1PKWT	0x840
 #define REG_MRC		0x850
 #define REG_CLKTRK	0x860
+#define REG_EDCCA_POW_MA	0x8a0
+#define BIT_MA_LEVEL	GENMASK(1, 0)
 #define REG_ADCCLK	0x8ac
 #define REG_ADC160	0x8c4
 #define REG_ADC40	0x8c8
+#define REG_EDCCA_DECISION	0x8dc
+#define BIT_EDCCA_OPTION	BIT(5)
 #define REG_CDDTXP	0x93c
 #define REG_TXPSEL1	0x940
+#define REG_EDCCA_SOURCE	0x944
+#define BIT_SOURCE_OPTION	GENMASK(29, 28)
 #define REG_ACBB0	0x948
 #define REG_ACBBRXFIR	0x94c
 #define REG_ACGG2TBL	0x958
drivers/net/wireless/realtek/rtw88/rtw8822c.c +47 -0

71 lines not on this page · raw message

drivers/net/wireless/realtek/rtw88/rtw8822c.h +3 -0
index 364afc6d851b..3df627419d81 100644
@@ -162,6 +162,7 @@ const struct rtw_table name ## _tbl = {			\
 #define GET_PHY_STAT_P1_RXSNR_B(phy_stat)                                      \
 	le32_get_bits(*((__le32 *)(phy_stat) + 0x06), GENMASK(15, 8))
 
+#define RTW8822C_EDCCA_MAX	0x7f
 #define REG_ANAPARLDO_POW_MAC	0x0029
 #define BIT_LDOE25_PON		BIT(0)
 #define XCAP_MASK		GENMASK(6, 0)
@@ -174,6 +175,8 @@ const struct rtw_table name ## _tbl = {			\
 #define REG_ANTMAP0		0x820
 #define BIT_ANT_PATH		GENMASK(1, 0)
 #define REG_ANTMAP		0x824
+#define REG_EDCCA_DECISION	0x844
+#define BIT_EDCCA_OPTION	GENMASK(30, 29)
 #define REG_DYMPRITH		0x86c
 #define REG_DYMENTH0		0x870
 #define REG_DYMENTH		0x874
Signature · 1 line
2.25.1
author maintainer
#5 lore raw

PATCH v2 4/4 rtw88: move adaptivity mechanism to firmware

In reply to Ping-Ke Shih

From: Chin-Yen Lee <[email protected]>

Current adaptivity mechanism is achieved in driver, by periodically referencing the IGI value and then updating related registers. But we find that this way may halt TX activity too long if huge and temporary energy is detected frequently. So we move the mechanism to firmware for immediately reacting this case to recover TX rapidly.

---
 drivers/net/wireless/realtek/rtw88/debug.h |  1 +
 drivers/net/wireless/realtek/rtw88/fw.c    | 47 ++++++++++++++++++++++
 drivers/net/wireless/realtek/rtw88/fw.h    | 24 +++++++++++
 drivers/net/wireless/realtek/rtw88/phy.c   |  6 ++-
 drivers/net/wireless/realtek/rtw88/reg.h   |  3 ++
 5 files changed, 80 insertions(+), 1 deletion(-)
drivers/net/wireless/realtek/rtw88/debug.h +1 -0
index 0dd3f9a88c8d..47c57f395f52 100644
@@ -21,6 +21,7 @@ enum rtw_debug_mask {
 	RTW_DBG_WOW		= 0x00001000,
 	RTW_DBG_CFO		= 0x00002000,
 	RTW_DBG_PATH_DIV	= 0x00004000,
+	RTW_DBG_ADAPTIVITY	= 0x00008000,
 
 	RTW_DBG_ALL		= 0xffffffff
 };
drivers/net/wireless/realtek/rtw88/fw.c +47 -0

65 lines not on this page · raw message

drivers/net/wireless/realtek/rtw88/fw.h +24 -0
index 64dcde35a021..09c7afb99e63 100644
@@ -41,6 +41,7 @@ enum rtw_c2h_cmd_id {
 	C2H_WLAN_INFO = 0x27,
 	C2H_WLAN_RFON = 0x32,
 	C2H_BCN_FILTER_NOTIFY = 0x36,
+	C2H_ADAPTIVITY = 0x37,
 	C2H_SCAN_RESULT = 0x38,
 	C2H_HW_FEATURE_DUMP = 0xfd,
 	C2H_HALMAC = 0xff,
@@ -56,6 +57,15 @@ struct rtw_c2h_cmd {
 	u8 payload[];
 } __packed;
 
+struct rtw_c2h_adaptivity {
+	u8 density;
+	u8 igi;
+	u8 l2h_th_init;
+	u8 l2h;
+	u8 h2l;
+	u8 option;
+} __packed;
+
 enum rtw_rsvd_packet_type {
 	RSVD_BEACON,
 	RSVD_DUMMY,
@@ -90,6 +100,7 @@ enum rtw_fw_feature {
 	FW_FEATURE_PG = BIT(3),
 	FW_FEATURE_BCN_FILTER = BIT(5),
 	FW_FEATURE_NOTIFY_SCAN = BIT(6),
+	FW_FEATURE_ADAPTIVITY = BIT(7),
 	FW_FEATURE_MAX = BIT(31),
 };
 
@@ -375,6 +386,7 @@ static inline void rtw_h2c_pkt_set_header(u8 *h2c_pkt, u8 sub_id)
 #define H2C_CMD_BCN_FILTER_OFFLOAD_P1	0x57
 #define H2C_CMD_WL_PHY_INFO		0x58
 #define H2C_CMD_SCAN			0x59
+#define H2C_CMD_ADAPTIVITY		0x5A
 
 #define H2C_CMD_COEX_TDMA_TYPE		0x60
 #define H2C_CMD_QUERY_BT_INFO		0x61
@@ -428,6 +440,17 @@ static inline void rtw_h2c_pkt_set_header(u8 *h2c_pkt, u8 sub_id)
 #define SET_SCAN_START(h2c_pkt, value)					       \
 	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, BIT(8))
 
+#define SET_ADAPTIVITY_MODE(h2c_pkt, value)				       \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(11, 8))
+#define SET_ADAPTIVITY_OPTION(h2c_pkt, value)				       \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(15, 12))
+#define SET_ADAPTIVITY_IGI(h2c_pkt, value)				       \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(23, 16))
+#define SET_ADAPTIVITY_L2H(h2c_pkt, value)				       \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(31, 24))
+#define SET_ADAPTIVITY_DENSITY(h2c_pkt, value)				       \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(7, 0))
+
 #define SET_PWR_MODE_SET_MODE(h2c_pkt, value)                                  \
 	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(14, 8))
 #define SET_PWR_MODE_SET_RLBM(h2c_pkt, value)                                  \
@@ -662,4 +685,5 @@ void rtw_fw_c2h_cmd_isr(struct rtw_dev *rtwdev);
 int rtw_fw_dump_fifo(struct rtw_dev *rtwdev, u8 fifo_sel, u32 addr, u32 size,
 		     u32 *buffer);
 void rtw_fw_scan_notify(struct rtw_dev *rtwdev, bool start);
+void rtw_fw_adaptivity(struct rtw_dev *rtwdev);
 #endif
drivers/net/wireless/realtek/rtw88/phy.c +5 -1
index e0daf12d2484..bfddfcbe63f5 100644
@@ -770,7 +770,11 @@ void rtw_phy_dynamic_mechanism(struct rtw_dev *rtwdev)
 	rtw_phy_cfo_track(rtwdev);
 	rtw_phy_dpk_track(rtwdev);
 	rtw_phy_pwr_track(rtwdev);
-	rtw_phy_adaptivity(rtwdev);
+
+	if (rtw_fw_feature_check(&rtwdev->fw, FW_FEATURE_ADAPTIVITY))
+		rtw_fw_adaptivity(rtwdev);
+	else
+		rtw_phy_adaptivity(rtwdev);
 }
 
 #define FRAC_BITS 3
drivers/net/wireless/realtek/rtw88/reg.h +3 -0
index 8adac30ee08e..abb7b490d8fa 100644
@@ -642,6 +642,9 @@
 
 #define REG_HRCV_MSG	0x1cf
 
+#define REG_EDCCA_REPORT	0x2d38
+#define BIT_EDCCA_FLAG		BIT(24)
+
 #define REG_IGN_GNTBT4	0x4160
 
 #define RF_MODE		0x00
Signature · 1 line
2.25.1