wifi: ath11k: support 2 station interfaces

Add hardware parameter support_dual_stations to indicate whether 2 station
interfaces are supported. For chips which support this feature, limit total
number of AP interface and mesh point to 1. The max interfaces are 3 for such
chips.

The chips affected are:

 QCA6390 hw2.0
 WCN6855 hw2.0
 WCN6855 hw2.1

Other chips are not affected.

For affected chips, remove radar_detect_widths because now
num_different_channels is set to 2. radar_detect_widths can be set only when
num_different_channels is 1, see mac80211 function wiphy_verify_combinations
for details. This means that in affectected chips DFS cannot be enabled in AP
mode.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3
Signed-off-by: Carl Huang <quic_cjhuang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20230714023801.2621802-2-quic_cjhuang@quicinc.com

drivers/net/wireless/ath/ath11k/core.c

@@ -122,6 +122,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tcl_ring_retry = true,
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 		.smp2p_wow_exit = false,
+		.support_dual_stations = false,
 	},
 	{
 		.hw_rev = ATH11K_HW_IPQ6018_HW10,
@@ -205,6 +206,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 		.smp2p_wow_exit = false,
 		.support_fw_mac_sequence = false,
+		.support_dual_stations = false,
 	},
 	{
 		.name = "qca6390 hw2.0",
@@ -255,7 +257,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.coldboot_cal_ftm = false,
 		.cbcal_restart_fw = false,
 		.fw_mem_mode = 0,
-		.num_vdevs = 16 + 1,
+		.num_vdevs = 2 + 1,
 		.num_peers = 512,
 		.supports_suspend = true,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
@@ -290,6 +292,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 		.smp2p_wow_exit = false,
 		.support_fw_mac_sequence = true,
+		.support_dual_stations = true,
 	},
 	{
 		.name = "qcn9074 hw1.0",
@@ -372,6 +375,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 		.smp2p_wow_exit = false,
 		.support_fw_mac_sequence = false,
+		.support_dual_stations = false,
 	},
 	{
 		.name = "wcn6855 hw2.0",
@@ -422,7 +426,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.coldboot_cal_ftm = false,
 		.cbcal_restart_fw = false,
 		.fw_mem_mode = 0,
-		.num_vdevs = 16 + 1,
+		.num_vdevs = 2 + 1,
 		.num_peers = 512,
 		.supports_suspend = true,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_wcn6855),
@@ -457,6 +461,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 		.smp2p_wow_exit = false,
 		.support_fw_mac_sequence = true,
+		.support_dual_stations = true,
 	},
 	{
 		.name = "wcn6855 hw2.1",
@@ -505,7 +510,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.coldboot_cal_ftm = false,
 		.cbcal_restart_fw = false,
 		.fw_mem_mode = 0,
-		.num_vdevs = 16 + 1,
+		.num_vdevs = 2 + 1,
 		.num_peers = 512,
 		.supports_suspend = true,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_wcn6855),
@@ -540,6 +545,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 		.smp2p_wow_exit = false,
 		.support_fw_mac_sequence = true,
+		.support_dual_stations = true,
 	},
 	{
 		.name = "wcn6750 hw1.0",
@@ -621,6 +627,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE_WCN6750,
 		.smp2p_wow_exit = true,
 		.support_fw_mac_sequence = true,
+		.support_dual_stations = false,
 	},
 	{
 		.hw_rev = ATH11K_HW_IPQ5018_HW10,
@@ -702,6 +709,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 		.smp2p_wow_exit = false,
 		.support_fw_mac_sequence = false,
+		.support_dual_stations = false,
 	},
 };
 

drivers/net/wireless/ath/ath11k/hw.c

@@ -58,7 +58,7 @@ static void ath11k_hw_wcn6855_tx_mesh_enable(struct ath11k_base *ab,
 static void ath11k_init_wmi_config_qca6390(struct ath11k_base *ab,
 					   struct target_resource_config *config)
 {
-	config->num_vdevs = 4;
+	config->num_vdevs = ab->hw_params.num_vdevs;
 	config->num_peers = 16;
 	config->num_tids = 32;
 

drivers/net/wireless/ath/ath11k/hw.h

@@ -226,6 +226,7 @@ struct ath11k_hw_params {
 	u32 tx_ring_size;
 	bool smp2p_wow_exit;
 	bool support_fw_mac_sequence;
+	bool support_dual_stations;
 };
 
 struct ath11k_hw_ops {

drivers/net/wireless/ath/ath11k/mac.c

@@ -9843,28 +9843,46 @@ static int ath11k_mac_setup_iface_combinations(struct ath11k *ar)
 		return -ENOMEM;
 	}
 
-	limits[0].max = 1;
-	limits[0].types |= BIT(NL80211_IFTYPE_STATION);
-
-	limits[1].max = 16;
-	limits[1].types |= BIT(NL80211_IFTYPE_AP);
-
-	if (IS_ENABLED(CONFIG_MAC80211_MESH) &&
-	    ab->hw_params.interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
-		limits[1].types |= BIT(NL80211_IFTYPE_MESH_POINT);
-
-	combinations[0].limits = limits;
-	combinations[0].n_limits = n_limits;
-	combinations[0].max_interfaces = 16;
-	combinations[0].num_different_channels = 1;
-	combinations[0].beacon_int_infra_match = true;
-	combinations[0].beacon_int_min_gcd = 100;
-	combinations[0].radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
-						BIT(NL80211_CHAN_WIDTH_20) |
-						BIT(NL80211_CHAN_WIDTH_40) |
-						BIT(NL80211_CHAN_WIDTH_80) |
-						BIT(NL80211_CHAN_WIDTH_80P80) |
-						BIT(NL80211_CHAN_WIDTH_160);
+	if (ab->hw_params.support_dual_stations) {
+		limits[0].max = 2;
+		limits[0].types |= BIT(NL80211_IFTYPE_STATION);
+
+		limits[1].max = 1;
+		limits[1].types |= BIT(NL80211_IFTYPE_AP);
+		if (IS_ENABLED(CONFIG_MAC80211_MESH) &&
+		    ab->hw_params.interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
+			limits[1].types |= BIT(NL80211_IFTYPE_MESH_POINT);
+
+		combinations[0].limits = limits;
+		combinations[0].n_limits = 2;
+		combinations[0].max_interfaces = ab->hw_params.num_vdevs;
+		combinations[0].num_different_channels = 2;
+		combinations[0].beacon_int_infra_match = true;
+		combinations[0].beacon_int_min_gcd = 100;
+	} else {
+		limits[0].max = 1;
+		limits[0].types |= BIT(NL80211_IFTYPE_STATION);
+
+		limits[1].max = 16;
+		limits[1].types |= BIT(NL80211_IFTYPE_AP);
+
+		if (IS_ENABLED(CONFIG_MAC80211_MESH) &&
+		    ab->hw_params.interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
+			limits[1].types |= BIT(NL80211_IFTYPE_MESH_POINT);
+
+		combinations[0].limits = limits;
+		combinations[0].n_limits = 2;
+		combinations[0].max_interfaces = 16;
+		combinations[0].num_different_channels = 1;
+		combinations[0].beacon_int_infra_match = true;
+		combinations[0].beacon_int_min_gcd = 100;
+		combinations[0].radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
+							BIT(NL80211_CHAN_WIDTH_20) |
+							BIT(NL80211_CHAN_WIDTH_40) |
+							BIT(NL80211_CHAN_WIDTH_80) |
+							BIT(NL80211_CHAN_WIDTH_80P80) |
+							BIT(NL80211_CHAN_WIDTH_160);
+	}
 
 	ar->hw->wiphy->iface_combinations = combinations;
 	ar->hw->wiphy->n_iface_combinations = 1;