iwlwifi: add support for 6-7 GHz channels

Add UHB (ultra high band) channels and use 16 bit variables
to fit the new channels.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/cfg/22000.c

@@ -427,12 +427,14 @@ const struct iwl_cfg iwlax210_2ax_cfg_so_hr_a0 = {
 const struct iwl_cfg iwlax210_2ax_cfg_so_gf_a0 = {
 	.name = "Intel(R) Wi-Fi 7 AX211 160MHz",
 	.fw_name_pre = IWL_22000_SO_A_GF_A_FW_PRE,
+	.uhb_supported = true,
 	IWL_DEVICE_AX210,
 };
 
 const struct iwl_cfg iwlax210_2ax_cfg_ty_gf_a0 = {
 	.name = "Intel(R) Wi-Fi 7 AX210 160MHz",
 	.fw_name_pre = IWL_22000_TY_A_GF_A_FW_PRE,
+	.uhb_supported = true,
 	IWL_DEVICE_AX210,
 };
 

drivers/net/wireless/intel/iwlwifi/iwl-config.h

@@ -383,6 +383,7 @@ struct iwl_csr_params {
  * @bisr_workaround: BISR hardware workaround (for 22260 series devices)
  * @min_txq_size: minimum number of slots required in a TX queue
  * @umac_prph_offset: offset to add to UMAC periphery address
+ * @uhb_supported: ultra high band channels supported
  *
  * We enable the driver to be backward compatible wrt. hardware features.
  * API differences in uCode shouldn't be handled here but through TLVs
@@ -433,7 +434,8 @@ struct iwl_cfg {
 	    gen2:1,
 	    cdb:1,
 	    dbgc_supported:1,
-	    bisr_workaround:1;
+	    bisr_workaround:1,
+	    uhb_supported:1;
 	u8 valid_tx_ant;
 	u8 valid_rx_ant;
 	u8 non_shared_ant;

drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c

@@ -130,7 +130,7 @@ enum nvm_sku_bits {
 /*
  * These are the channel numbers in the order that they are stored in the NVM
  */
-static const u8 iwl_nvm_channels[] = {
+static const u16 iwl_nvm_channels[] = {
 	/* 2.4 GHz */
 	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
 	/* 5 GHz */
@@ -139,7 +139,7 @@ static const u8 iwl_nvm_channels[] = {
 	149, 153, 157, 161, 165
 };
 
-static const u8 iwl_ext_nvm_channels[] = {
+static const u16 iwl_ext_nvm_channels[] = {
 	/* 2.4 GHz */
 	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
 	/* 5 GHz */
@@ -148,14 +148,27 @@ static const u8 iwl_ext_nvm_channels[] = {
 	149, 153, 157, 161, 165, 169, 173, 177, 181
 };
 
+static const u16 iwl_uhb_nvm_channels[] = {
+	/* 2.4 GHz */
+	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+	/* 5 GHz */
+	36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92,
+	96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
+	149, 153, 157, 161, 165, 169, 173, 177, 181,
+	/* 6-7 GHz */
+	189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 233, 237, 241,
+	245, 249, 253, 257, 261, 265, 269, 273, 277, 281, 285, 289, 293, 297,
+	301, 305, 309, 313, 317, 321, 325, 329, 333, 337, 341, 345, 349, 353,
+	357, 361, 365, 369, 373, 377, 381, 385, 389, 393, 397, 401, 405, 409,
+	413, 417, 421
+};
+
 #define IWL_NVM_NUM_CHANNELS		ARRAY_SIZE(iwl_nvm_channels)
 #define IWL_NVM_NUM_CHANNELS_EXT	ARRAY_SIZE(iwl_ext_nvm_channels)
+#define IWL_NVM_NUM_CHANNELS_UHB	ARRAY_SIZE(iwl_uhb_nvm_channels)
 #define NUM_2GHZ_CHANNELS		14
-#define NUM_2GHZ_CHANNELS_EXT	14
 #define FIRST_2GHZ_HT_MINUS		5
 #define LAST_2GHZ_HT_PLUS		9
-#define LAST_5GHZ_HT			165
-#define LAST_5GHZ_HT_FAMILY_8000	181
 #define N_HW_ADDR_MASK			0xF
 
 /* rate data (static) */
@@ -247,17 +260,13 @@ static u32 iwl_get_channel_flags(u8 ch_num, int ch_idx, bool is_5ghz,
 				 u16 nvm_flags, const struct iwl_cfg *cfg)
 {
 	u32 flags = IEEE80211_CHAN_NO_HT40;
-	u32 last_5ghz_ht = LAST_5GHZ_HT;
-
-	if (cfg->nvm_type == IWL_NVM_EXT)
-		last_5ghz_ht = LAST_5GHZ_HT_FAMILY_8000;
 
 	if (!is_5ghz && (nvm_flags & NVM_CHANNEL_40MHZ)) {
 		if (ch_num <= LAST_2GHZ_HT_PLUS)
 			flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
 		if (ch_num >= FIRST_2GHZ_HT_MINUS)
 			flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
-	} else if (ch_num <= last_5ghz_ht && (nvm_flags & NVM_CHANNEL_40MHZ)) {
+	} else if (nvm_flags & NVM_CHANNEL_40MHZ) {
 		if ((ch_idx - NUM_2GHZ_CHANNELS) % 2 == 0)
 			flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
 		else
@@ -299,17 +308,18 @@ static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
 	int n_channels = 0;
 	struct ieee80211_channel *channel;
 	u16 ch_flags;
-	int num_of_ch, num_2ghz_channels;
-	const u8 *nvm_chan;
+	int num_of_ch, num_2ghz_channels = NUM_2GHZ_CHANNELS;
+	const u16 *nvm_chan;
 
-	if (cfg->nvm_type != IWL_NVM_EXT) {
-		num_of_ch = IWL_NVM_NUM_CHANNELS;
-		nvm_chan = &iwl_nvm_channels[0];
-		num_2ghz_channels = NUM_2GHZ_CHANNELS;
-	} else {
+	if (cfg->uhb_supported) {
+		num_of_ch = IWL_NVM_NUM_CHANNELS_UHB;
+		nvm_chan = iwl_uhb_nvm_channels;
+	} else if (cfg->nvm_type == IWL_NVM_EXT) {
 		num_of_ch = IWL_NVM_NUM_CHANNELS_EXT;
-		nvm_chan = &iwl_ext_nvm_channels[0];
-		num_2ghz_channels = NUM_2GHZ_CHANNELS_EXT;
+		nvm_chan = iwl_ext_nvm_channels;
+	} else {
+		num_of_ch = IWL_NVM_NUM_CHANNELS;
+		nvm_chan = iwl_nvm_channels;
 	}
 
 	for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) {
@@ -1013,15 +1023,11 @@ iwl_parse_nvm_data(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 }
 IWL_EXPORT_SYMBOL(iwl_parse_nvm_data);
 
-static u32 iwl_nvm_get_regdom_bw_flags(const u8 *nvm_chan,
+static u32 iwl_nvm_get_regdom_bw_flags(const u16 *nvm_chan,
 				       int ch_idx, u16 nvm_flags,
 				       const struct iwl_cfg *cfg)
 {
 	u32 flags = NL80211_RRF_NO_HT40;
-	u32 last_5ghz_ht = LAST_5GHZ_HT;
-
-	if (cfg->nvm_type == IWL_NVM_EXT)
-		last_5ghz_ht = LAST_5GHZ_HT_FAMILY_8000;
 
 	if (ch_idx < NUM_2GHZ_CHANNELS &&
 	    (nvm_flags & NVM_CHANNEL_40MHZ)) {
@@ -1029,8 +1035,7 @@ static u32 iwl_nvm_get_regdom_bw_flags(const u8 *nvm_chan,
 			flags &= ~NL80211_RRF_NO_HT40PLUS;
 		if (nvm_chan[ch_idx] >= FIRST_2GHZ_HT_MINUS)
 			flags &= ~NL80211_RRF_NO_HT40MINUS;
-	} else if (nvm_chan[ch_idx] <= last_5ghz_ht &&
-		   (nvm_flags & NVM_CHANNEL_40MHZ)) {
+	} else if (nvm_flags & NVM_CHANNEL_40MHZ) {
 		if ((ch_idx - NUM_2GHZ_CHANNELS) % 2 == 0)
 			flags &= ~NL80211_RRF_NO_HT40PLUS;
 		else
@@ -1074,8 +1079,7 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 	int ch_idx;
 	u16 ch_flags;
 	u32 reg_rule_flags, prev_reg_rule_flags = 0;
-	const u8 *nvm_chan = cfg->nvm_type == IWL_NVM_EXT ?
-			     iwl_ext_nvm_channels : iwl_nvm_channels;
+	const u16 *nvm_chan;
 	struct ieee80211_regdomain *regd, *copy_rd;
 	int size_of_regd, regd_to_copy;
 	struct ieee80211_reg_rule *rule;
@@ -1084,8 +1088,18 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 	int center_freq, prev_center_freq = 0;
 	int valid_rules = 0;
 	bool new_rule;
-	int max_num_ch = cfg->nvm_type == IWL_NVM_EXT ?
-			 IWL_NVM_NUM_CHANNELS_EXT : IWL_NVM_NUM_CHANNELS;
+	int max_num_ch;
+
+	if (cfg->uhb_supported) {
+		max_num_ch = IWL_NVM_NUM_CHANNELS_UHB;
+		nvm_chan = iwl_uhb_nvm_channels;
+	} else if (cfg->nvm_type == IWL_NVM_EXT) {
+		max_num_ch = IWL_NVM_NUM_CHANNELS_EXT;
+		nvm_chan = iwl_ext_nvm_channels;
+	} else {
+		max_num_ch = IWL_NVM_NUM_CHANNELS;
+		nvm_chan = iwl_nvm_channels;
+	}
 
 	if (WARN_ON(num_of_ch > max_num_ch))
 		num_of_ch = max_num_ch;