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From:   Aloka Dixit <quic_alokad@quicinc.com>
To:     <ath12k@lists.infradead.org>, <linux-wireless@vger.kernel.org>
CC:     Aloka Dixit <quic_alokad@quicinc.com>,
        Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
Subject: [PATCH v4 04/11] wifi: ath12k: propagate EHT capabilities to userspace
Date:   Fri, 2 Jun 2023 16:58:13 -0700
Message-ID: <20230602235820.23912-5-quic_alokad@quicinc.com>
In-Reply-To: <20230602235820.23912-1-quic_alokad@quicinc.com>
References: <20230602235820.23912-1-quic_alokad@quicinc.com>
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Propagate EHT capabilities to the userspace using a new member
'eht_cap' in structure ieee80211_sband_iftype_data.

MCS-NSS capabilities are copied depending on the supported bandwidths
for the given band.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Signed-off-by: Pradeep Kumar Chitrapu<quic_pradeepc@quicinc.com>
---
v4: No change from v3.
v3: No change from v2.
v2: No change from v1.

 drivers/net/wireless/ath/ath12k/mac.c | 128 ++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 2eec7e114196..d4e97424dbc1 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -4262,6 +4262,132 @@ static void ath12k_mac_copy_he_cap(struct ath12k_band_cap *band_cap,
 		ath12k_gen_ppe_thresh(&band_cap->he_ppet, he_cap->ppe_thres);
 }
 
+static void
+ath12k_mac_copy_eht_mcs_nss(struct ath12k_band_cap *band_cap,
+			    struct ieee80211_eht_mcs_nss_supp *mcs_nss,
+			    const struct ieee80211_he_cap_elem *he_cap,
+			    const struct ieee80211_eht_cap_elem_fixed *eht_cap)
+{
+	if ((he_cap->phy_cap_info[0] &
+	     (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 |
+	      IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)) == 0)
+		memcpy(&mcs_nss->only_20mhz, &band_cap->eht_mcs_20_only,
+		       sizeof(struct ieee80211_eht_mcs_nss_supp_20mhz_only));
+
+	if (he_cap->phy_cap_info[0] &
+	    (IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G |
+	     IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G))
+		memcpy(&mcs_nss->bw._80, &band_cap->eht_mcs_80,
+		       sizeof(struct ieee80211_eht_mcs_nss_supp_bw));
+
+	if (he_cap->phy_cap_info[0] &
+	    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
+		memcpy(&mcs_nss->bw._160, &band_cap->eht_mcs_160,
+		       sizeof(struct ieee80211_eht_mcs_nss_supp_bw));
+
+	if (eht_cap->phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ)
+		memcpy(&mcs_nss->bw._320, &band_cap->eht_mcs_320,
+		       sizeof(struct ieee80211_eht_mcs_nss_supp_bw));
+}
+
+static void ath12k_mac_copy_eht_ppet_ru(u32 ppet, u8 ppe_thres[], int ru)
+{
+	int i;
+	u32 val = 0;
+	u8 ppet_size_ru = IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE * 2;
+	u8 bit = IEEE80211_EHT_PPE_THRES_INFO_HEADER_SIZE;
+
+	u32p_replace_bits(&val, ppet >> (ru * ppet_size_ru),
+			  GENMASK(ppet_size_ru - 1, 0));
+
+	val = ((val >> IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE) & GENMASK(2, 0)) |
+	      ((val & GENMASK(2, 0)) << IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE);
+
+	for (i = ppet_size_ru - 1; i >= 0; i--) {
+		ppe_thres[bit / 8] |= (((val >> i) & 0x1) << ((bit % 8)));
+		bit++;
+	}
+}
+
+static void ath12k_mac_copy_eht_ppe_thresh(struct ath12k_wmi_ppe_threshold_arg *fw_ppet,
+					   struct ieee80211_sta_eht_cap *cap)
+{
+	int nss, ru;
+	u8 len = 0;
+
+	len = hweight8(fw_ppet->ru_bit_mask);
+	len *= (1 + fw_ppet->numss_m1);
+
+	len = (len * IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE) +
+	      IEEE80211_EHT_PPE_THRES_INFO_HEADER_SIZE;
+	len = DIV_ROUND_UP(len, 8);
+
+	u8p_replace_bits(&cap->eht_ppe_thres[0], fw_ppet->numss_m1,
+			 IEEE80211_EHT_PPE_THRES_NSS_MASK);
+
+	u16p_replace_bits((u16 *)&cap->eht_ppe_thres[0], fw_ppet->ru_bit_mask,
+			  IEEE80211_EHT_PPE_THRES_RU_INDEX_BITMASK_MASK);
+
+	for (nss = 0; nss <= fw_ppet->numss_m1; nss++) {
+		for (ru = 0;
+		     ru < hweight8(IEEE80211_EHT_PPE_THRES_RU_INDEX_BITMASK_MASK);
+		     ru++) {
+			if ((fw_ppet->ru_bit_mask & BIT(ru)) == 0)
+				continue;
+
+			ath12k_mac_copy_eht_ppet_ru(fw_ppet->ppet16_ppet8_ru3_ru0[nss],
+						    cap->eht_ppe_thres, ru);
+		}
+	}
+}
+
+static void ath12k_mac_copy_eht_cap(struct ath12k_band_cap *band_cap,
+				    struct ieee80211_he_cap_elem *he_cap_elem,
+				    int iftype,
+				    struct ieee80211_sta_eht_cap *eht_cap)
+{
+	struct ieee80211_eht_cap_elem_fixed *eht_cap_elem = &eht_cap->eht_cap_elem;
+
+	memset(eht_cap, 0, sizeof(struct ieee80211_sta_eht_cap));
+	eht_cap->has_eht = true;
+	memcpy(eht_cap_elem->mac_cap_info, band_cap->eht_cap_mac_info,
+	       sizeof(eht_cap_elem->mac_cap_info));
+	memcpy(eht_cap_elem->phy_cap_info, band_cap->eht_cap_phy_info,
+	       sizeof(eht_cap_elem->phy_cap_info));
+
+	switch (iftype) {
+	case NL80211_IFTYPE_AP:
+		eht_cap_elem->phy_cap_info[0] &=
+			~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ;
+		eht_cap_elem->phy_cap_info[4] &=
+			~IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO;
+		eht_cap_elem->phy_cap_info[5] &=
+			~IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP;
+		break;
+	case NL80211_IFTYPE_STATION:
+		eht_cap_elem->phy_cap_info[7] &=
+			~(IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
+			  IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
+			  IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ);
+		eht_cap_elem->phy_cap_info[7] &=
+			~(IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
+			  IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
+			  IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ);
+		break;
+	default:
+		break;
+	}
+
+	ath12k_mac_copy_eht_mcs_nss(band_cap, &eht_cap->eht_mcs_nss_supp,
+				    he_cap_elem, eht_cap_elem);
+
+	if (eht_cap_elem->phy_cap_info[5] &
+	    IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT)
+		ath12k_mac_copy_eht_ppe_thresh(&band_cap->eht_ppet, eht_cap);
+}
+
 static int ath12k_mac_copy_sband_iftype_data(struct ath12k *ar,
 					     struct ath12k_pdev_cap *cap,
 					     struct ieee80211_sband_iftype_data *data,
@@ -4290,6 +4416,8 @@ static int ath12k_mac_copy_sband_iftype_data(struct ath12k *ar,
 			data[idx].he_6ghz_capa.capa =
 				ath12k_mac_setup_he_6ghz_cap(cap, band_cap);
 		}
+		ath12k_mac_copy_eht_cap(band_cap, &he_cap->he_cap_elem, i,
+					&data[idx].eht_cap);
 		idx++;
 	}
 
-- 
2.39.0