iwlwifi: add support for IEEE802.11ax

Add support for the HE in the iwlwifi driver conforming with
P802.11ax_D2.0.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index b815ba38dbdb..941604c24fa1 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -463,6 +463,101 @@ static void iwl_init_vht_hw_capab(const struct iwl_cfg *cfg,
 	vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
 }
 
+static struct ieee80211_sband_iftype_data iwl_he_capa = {
+	.types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
+	.he_cap = {
+		.has_he = true,
+		.he_cap_elem = {
+			.mac_cap_info[0] =
+				IEEE80211_HE_MAC_CAP0_HTC_HE,
+			.mac_cap_info[1] =
+				IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
+				IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_QOS_8,
+			.mac_cap_info[2] =
+				IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP |
+				IEEE80211_HE_MAC_CAP2_ACK_EN,
+			.mac_cap_info[3] =
+				IEEE80211_HE_MAC_CAP3_GRP_ADDR_MULTI_STA_BA_DL_MU |
+				IEEE80211_HE_MAC_CAP3_MAX_A_AMPDU_LEN_EXP_VHT_2,
+			.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
+			.phy_cap_info[0] =
+				IEEE80211_HE_PHY_CAP0_DUAL_BAND |
+				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G |
+				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
+				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G,
+			.phy_cap_info[1] =
+				IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
+				IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
+				IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS,
+			.phy_cap_info[2] =
+				IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
+				IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
+				IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ,
+			.phy_cap_info[3] =
+				IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK |
+				IEEE80211_HE_PHY_CAP3_DCM_MAX_TX_NSS_1 |
+				IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK |
+				IEEE80211_HE_PHY_CAP3_DCM_MAX_RX_NSS_1,
+			.phy_cap_info[4] =
+				IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE |
+				IEEE80211_HE_PHY_CAP4_BEAMFORMEE_MAX_STS_ABOVE_80MHZ_8 |
+				IEEE80211_HE_PHY_CAP4_BEAMFORMEE_MAX_STS_UNDER_80MHZ_8,
+			.phy_cap_info[5] =
+				IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ_2 |
+				IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_2,
+			.phy_cap_info[6] =
+				IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT,
+			.phy_cap_info[7] =
+				IEEE80211_HE_PHY_CAP7_POWER_BOOST_FACTOR_AR |
+				IEEE80211_HE_PHY_CAP7_HE_SU_MU_PPDU_4XLTF_AND_08_US_GI |
+				IEEE80211_HE_PHY_CAP7_MAX_NC_7,
+			.phy_cap_info[8] =
+				IEEE80211_HE_PHY_CAP8_HE_ER_SU_PPDU_4XLTF_AND_08_US_GI |
+				IEEE80211_HE_PHY_CAP8_20MHZ_IN_40MHZ_HE_PPDU_IN_2G |
+				IEEE80211_HE_PHY_CAP8_20MHZ_IN_160MHZ_HE_PPDU |
+				IEEE80211_HE_PHY_CAP8_80MHZ_IN_160MHZ_HE_PPDU,
+		},
+		/*
+		 * Set default Tx/Rx HE MCS NSS Support field. Indicate support
+		 * for up to 2 spatial streams and all MCS, without any special
+		 * cases
+		 */
+		.he_mcs_nss_supp = {
+			.rx_mcs_80 = cpu_to_le16(0xfffa),
+			.tx_mcs_80 = cpu_to_le16(0xfffa),
+			.rx_mcs_160 = cpu_to_le16(0xfffa),
+			.tx_mcs_160 = cpu_to_le16(0xfffa),
+			.rx_mcs_80p80 = cpu_to_le16(0xffff),
+			.tx_mcs_80p80 = cpu_to_le16(0xffff),
+		},
+		/*
+		 * Set default PPE thresholds, with PPET16 set to 0, PPET8 set
+		 * to 7
+		 */
+		.ppe_thres = {0x61, 0x1c, 0xc7, 0x71},
+	},
+};
+
+static void iwl_init_he_hw_capab(struct ieee80211_supported_band *sband,
+				 u8 tx_chains, u8 rx_chains)
+{
+	if (sband->band == NL80211_BAND_2GHZ ||
+	    sband->band == NL80211_BAND_5GHZ)
+		sband->iftype_data = &iwl_he_capa;
+	else
+		return;
+
+	sband->n_iftype_data = 1;
+
+	/* If not 2x2, we need to indicate 1x1 in the Midamble RX Max NSTS */
+	if ((tx_chains & rx_chains) != ANT_AB) {
+		iwl_he_capa.he_cap.he_cap_elem.phy_cap_info[1] &=
+			~IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS;
+		iwl_he_capa.he_cap.he_cap_elem.phy_cap_info[2] &=
+			~IEEE80211_HE_PHY_CAP2_MIDAMBLE_RX_MAX_NSTS;
+	}
+}
+
 static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
 			    struct iwl_nvm_data *data,
 			    const __le16 *nvm_ch_flags, u8 tx_chains,
@@ -483,6 +578,9 @@ static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
 	iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, NL80211_BAND_2GHZ,
 			     tx_chains, rx_chains);
 
+	if (data->sku_cap_11ax_enable)
+		iwl_init_he_hw_capab(sband, tx_chains, rx_chains);
+
 	sband = &data->bands[NL80211_BAND_5GHZ];
 	sband->band = NL80211_BAND_5GHZ;
 	sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS];
@@ -495,6 +593,9 @@ static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
 		iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap,
 				      tx_chains, rx_chains);
 
+	if (data->sku_cap_11ax_enable)
+		iwl_init_he_hw_capab(sband, tx_chains, rx_chains);
+
 	if (n_channels != n_used)
 		IWL_ERR_DEV(dev, "NVM: used only %d of %d channels\n",
 			    n_used, n_channels);
@@ -1293,6 +1394,8 @@ struct iwl_nvm_data *iwl_get_nvm(struct iwl_trans *trans,
 		!!(mac_flags & NVM_MAC_SKU_FLAGS_802_11AC_ENABLED);
 	nvm->sku_cap_11n_enable =
 		!!(mac_flags & NVM_MAC_SKU_FLAGS_802_11N_ENABLED);
+	nvm->sku_cap_11ax_enable =
+		!!(mac_flags & NVM_MAC_SKU_FLAGS_802_11AX_ENABLED);
 	nvm->sku_cap_band_24ghz_enable =
 		!!(mac_flags & NVM_MAC_SKU_FLAGS_BAND_2_4_ENABLED);
 	nvm->sku_cap_band_52ghz_enable =