wifi: rtw89: add to parse firmware elements of BB and RF tables

The tables of BB and RF parameters are pairs of {addr, value}. Load them
and convert from little-endian to CPU order, and show the version to clear
which version we are using.

  rtw89_8922ae 0000:03:00.0: Firmware element BB version: 00 04 00 00
  rtw89_8922ae 0000:03:00.0: Firmware element radio A version: 00 13 00 00
  rtw89_8922ae 0000:03:00.0: Firmware element NCTL version: 00 05 00 00

We use tables defined in firmware elements with higher priority than
original static const tables defined in driver, because WiFi 7 chips will
not define the tables in driver, and existing chips can possibly migrate to
the new design one by one.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230801021127.15919-8-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/core.h

@@ -3613,6 +3613,13 @@ struct rtw89_fw_log {
 	const char *(*fmts)[];
 };
 
+struct rtw89_fw_elm_info {
+	struct rtw89_phy_table *bb_tbl;
+	struct rtw89_phy_table *bb_gain;
+	struct rtw89_phy_table *rf_radio[RF_PATH_MAX];
+	struct rtw89_phy_table *rf_nctl;
+};
+
 struct rtw89_fw_info {
 	struct rtw89_fw_req_info req;
 	int fw_format;
@@ -3626,6 +3633,7 @@ struct rtw89_fw_info {
 	struct rtw89_fw_suit bbmcu1;
 	struct rtw89_fw_log log;
 	u32 feature_map;
+	struct rtw89_fw_elm_info elm_info;
 };
 
 #define RTW89_CHK_FW_FEATURE(_feat, _fw) \

drivers/net/wireless/realtek/rtw89/fw.c

@@ -544,6 +544,68 @@ int rtw89_fw_recognize(struct rtw89_dev *rtwdev)
 	return 0;
 }
 
+static
+int rtw89_build_phy_tbl_from_elm(struct rtw89_dev *rtwdev,
+				 const struct rtw89_fw_element_hdr *elm,
+				 const void *data)
+{
+	struct rtw89_fw_elm_info *elm_info = &rtwdev->fw.elm_info;
+	struct rtw89_phy_table *tbl;
+	struct rtw89_reg2_def *regs;
+	enum rtw89_rf_path rf_path;
+	u32 n_regs, i;
+	u8 idx;
+
+	tbl = kzalloc(sizeof(*tbl), GFP_KERNEL);
+	if (!tbl)
+		return -ENOMEM;
+
+	switch (le32_to_cpu(elm->id)) {
+	case RTW89_FW_ELEMENT_ID_BB_REG:
+		elm_info->bb_tbl = tbl;
+		break;
+	case RTW89_FW_ELEMENT_ID_BB_GAIN:
+		elm_info->bb_gain = tbl;
+		break;
+	case RTW89_FW_ELEMENT_ID_RADIO_A:
+	case RTW89_FW_ELEMENT_ID_RADIO_B:
+	case RTW89_FW_ELEMENT_ID_RADIO_C:
+	case RTW89_FW_ELEMENT_ID_RADIO_D:
+		rf_path = (enum rtw89_rf_path)data;
+		idx = elm->u.reg2.idx;
+
+		elm_info->rf_radio[idx] = tbl;
+		tbl->rf_path = rf_path;
+		tbl->config = rtw89_phy_config_rf_reg_v1;
+		break;
+	case RTW89_FW_ELEMENT_ID_RF_NCTL:
+		elm_info->rf_nctl = tbl;
+		break;
+	default:
+		kfree(tbl);
+		return -ENOENT;
+	}
+
+	n_regs = le32_to_cpu(elm->size) / sizeof(tbl->regs[0]);
+	regs = kcalloc(n_regs, sizeof(tbl->regs[0]), GFP_KERNEL);
+	if (!regs)
+		goto out;
+
+	for (i = 0; i < n_regs; i++) {
+		regs[i].addr = le32_to_cpu(elm->u.reg2.regs[i].addr);
+		regs[i].data = le32_to_cpu(elm->u.reg2.regs[i].data);
+	}
+
+	tbl->n_regs = n_regs;
+	tbl->regs = regs;
+
+	return 0;
+
+out:
+	kfree(tbl);
+	return -ENOMEM;
+}
+
 struct rtw89_fw_element_handler {
 	int (*fn)(struct rtw89_dev *rtwdev,
 		  const struct rtw89_fw_element_hdr *elm, const void *data);
@@ -556,6 +618,17 @@ static const struct rtw89_fw_element_handler __fw_element_handlers[] = {
 					(const void *)RTW89_FW_BBMCU0, NULL},
 	[RTW89_FW_ELEMENT_ID_BBMCU1] = {__rtw89_fw_recognize_from_elm,
 					(const void *)RTW89_FW_BBMCU1, NULL},
+	[RTW89_FW_ELEMENT_ID_BB_REG] = {rtw89_build_phy_tbl_from_elm, NULL, "BB"},
+	[RTW89_FW_ELEMENT_ID_BB_GAIN] = {rtw89_build_phy_tbl_from_elm, NULL, NULL},
+	[RTW89_FW_ELEMENT_ID_RADIO_A] = {rtw89_build_phy_tbl_from_elm,
+					 (const void *)RF_PATH_A, "radio A"},
+	[RTW89_FW_ELEMENT_ID_RADIO_B] = {rtw89_build_phy_tbl_from_elm,
+					 (const void *)RF_PATH_B, NULL},
+	[RTW89_FW_ELEMENT_ID_RADIO_C] = {rtw89_build_phy_tbl_from_elm,
+					 (const void *)RF_PATH_C, NULL},
+	[RTW89_FW_ELEMENT_ID_RADIO_D] = {rtw89_build_phy_tbl_from_elm,
+					 (const void *)RF_PATH_D, NULL},
+	[RTW89_FW_ELEMENT_ID_RF_NCTL] = {rtw89_build_phy_tbl_from_elm, NULL, "NCTL"},
 };
 
 int rtw89_fw_recognize_elements(struct rtw89_dev *rtwdev)
@@ -903,6 +976,27 @@ void rtw89_load_firmware_work(struct work_struct *work)
 	rtw89_load_firmware_req(rtwdev, &rtwdev->fw.req, fw_name, false);
 }
 
+static void rtw89_free_phy_tbl_from_elm(struct rtw89_phy_table *tbl)
+{
+	if (!tbl)
+		return;
+
+	kfree(tbl->regs);
+	kfree(tbl);
+}
+
+static void rtw89_unload_firmware_elements(struct rtw89_dev *rtwdev)
+{
+	struct rtw89_fw_elm_info *elm_info = &rtwdev->fw.elm_info;
+	int i;
+
+	rtw89_free_phy_tbl_from_elm(elm_info->bb_tbl);
+	rtw89_free_phy_tbl_from_elm(elm_info->bb_gain);
+	for (i = 0; i < ARRAY_SIZE(elm_info->rf_radio); i++)
+		rtw89_free_phy_tbl_from_elm(elm_info->rf_radio[i]);
+	rtw89_free_phy_tbl_from_elm(elm_info->rf_nctl);
+}
+
 void rtw89_unload_firmware(struct rtw89_dev *rtwdev)
 {
 	struct rtw89_fw_info *fw = &rtwdev->fw;
@@ -919,6 +1013,7 @@ void rtw89_unload_firmware(struct rtw89_dev *rtwdev)
 	}
 
 	kfree(fw->log.fmts);
+	rtw89_unload_firmware_elements(rtwdev);
 }
 
 static u32 rtw89_fw_log_get_fmt_idx(struct rtw89_dev *rtwdev, u32 fmt_id)

drivers/net/wireless/realtek/rtw89/fw.h

@@ -3405,6 +3405,13 @@ struct rtw89_fw_logsuit_hdr {
 enum rtw89_fw_element_id {
 	RTW89_FW_ELEMENT_ID_BBMCU0 = 0,
 	RTW89_FW_ELEMENT_ID_BBMCU1 = 1,
+	RTW89_FW_ELEMENT_ID_BB_REG = 2,
+	RTW89_FW_ELEMENT_ID_BB_GAIN = 3,
+	RTW89_FW_ELEMENT_ID_RADIO_A = 4,
+	RTW89_FW_ELEMENT_ID_RADIO_B = 5,
+	RTW89_FW_ELEMENT_ID_RADIO_C = 6,
+	RTW89_FW_ELEMENT_ID_RADIO_D = 7,
+	RTW89_FW_ELEMENT_ID_RF_NCTL = 8,
 };
 
 struct rtw89_fw_element_hdr {

drivers/net/wireless/realtek/rtw89/phy.c

@@ -1355,12 +1355,16 @@ static void rtw89_phy_init_reg(struct rtw89_dev *rtwdev,
 
 void rtw89_phy_init_bb_reg(struct rtw89_dev *rtwdev)
 {
+	struct rtw89_fw_elm_info *elm_info = &rtwdev->fw.elm_info;
 	const struct rtw89_chip_info *chip = rtwdev->chip;
-	const struct rtw89_phy_table *bb_table = chip->bb_table;
-	const struct rtw89_phy_table *bb_gain_table = chip->bb_gain_table;
+	const struct rtw89_phy_table *bb_table;
+	const struct rtw89_phy_table *bb_gain_table;
 
+	bb_table = elm_info->bb_tbl ? elm_info->bb_tbl : chip->bb_table;
 	rtw89_phy_init_reg(rtwdev, bb_table, rtw89_phy_config_bb_reg, NULL);
 	rtw89_chip_init_txpwr_unit(rtwdev, RTW89_PHY_0);
+
+	bb_gain_table = elm_info->bb_gain ? elm_info->bb_gain : chip->bb_gain_table;
 	if (bb_gain_table)
 		rtw89_phy_init_reg(rtwdev, bb_gain_table,
 				   rtw89_phy_config_bb_gain, NULL);
@@ -1378,6 +1382,7 @@ void rtw89_phy_init_rf_reg(struct rtw89_dev *rtwdev, bool noio)
 {
 	void (*config)(struct rtw89_dev *rtwdev, const struct rtw89_reg2_def *reg,
 		       enum rtw89_rf_path rf_path, void *data);
+	struct rtw89_fw_elm_info *elm_info = &rtwdev->fw.elm_info;
 	const struct rtw89_chip_info *chip = rtwdev->chip;
 	const struct rtw89_phy_table *rf_table;
 	struct rtw89_fw_h2c_rf_reg_info *rf_reg_info;
@@ -1388,7 +1393,8 @@ void rtw89_phy_init_rf_reg(struct rtw89_dev *rtwdev, bool noio)
 		return;
 
 	for (path = RF_PATH_A; path < chip->rf_path_num; path++) {
-		rf_table = chip->rf_table[path];
+		rf_table = elm_info->rf_radio[path] ?
+			   elm_info->rf_radio[path] : chip->rf_table[path];
 		rf_reg_info->rf_path = rf_table->rf_path;
 		if (noio)
 			config = rtw89_phy_config_rf_reg_noio;
@@ -1405,6 +1411,7 @@ void rtw89_phy_init_rf_reg(struct rtw89_dev *rtwdev, bool noio)
 
 static void rtw89_phy_init_rf_nctl(struct rtw89_dev *rtwdev)
 {
+	struct rtw89_fw_elm_info *elm_info = &rtwdev->fw.elm_info;
 	const struct rtw89_chip_info *chip = rtwdev->chip;
 	const struct rtw89_phy_table *nctl_table;
 	u32 val;
@@ -1427,7 +1434,7 @@ static void rtw89_phy_init_rf_nctl(struct rtw89_dev *rtwdev)
 	if (ret)
 		rtw89_err(rtwdev, "failed to poll nctl block\n");
 
-	nctl_table = chip->nctl_table;
+	nctl_table = elm_info->rf_nctl ? elm_info->rf_nctl : chip->nctl_table;
 	rtw89_phy_init_reg(rtwdev, nctl_table, rtw89_phy_config_bb_reg, NULL);
 
 	if (chip->nctl_post_table)