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   1 From a27c6a5853eb9d4f293b99be73a6891fe88263c7 Mon Sep 17 00:00:00 2001
   2 From: Sowmiya Sree Elavalagan <quic_ssreeela@quicinc.com>
   3 Date: Tue, 10 Jan 2023 15:30:57 +0200
   4 Subject: [PATCH] wifi: ath11k: Add support to configure FTM responder role
   5
   6 Fine Timing Measurement(FTM) support is used to measure round trip
   7 time between two nodes.
   8
   9 Enable FTM responder feature using hw_params on supported device.
  10 Since FTM functionality is offloaded to firmware, adding the
  11 interface allows user space to enable or disable FTM responder.
  12 Also add support for advertising the same in extended capabilities.
  13
  14 QCA6390, WCN6855 and WCN6750 do not support this feature.
  15
  16 Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
  17 Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
  18
  19 Signed-off-by: Sowmiya Sree Elavalagan <quic_ssreeela@quicinc.com>
  20 Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@quicinc.com>
  21 Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
  22 Link: https://lore.kernel.org/r/20221220044435.10506-1-quic_rajkbhag@quicinc.com
  23 ---
  24  drivers/net/wireless/ath/ath11k/core.c |  8 ++++++++
  25  drivers/net/wireless/ath/ath11k/core.h |  1 +
  26  drivers/net/wireless/ath/ath11k/hw.h   |  1 +
  27  drivers/net/wireless/ath/ath11k/mac.c  | 20 +++++++++++++++++++-
  28  drivers/net/wireless/ath/ath11k/wmi.h  |  1 +
  29  5 files changed, 30 insertions(+), 1 deletion(-)
  30
  31 --- a/drivers/net/wireless/ath/ath11k/core.c
  32 +++ b/drivers/net/wireless/ath/ath11k/core.c
  33 @@ -116,6 +116,7 @@ static const struct ath11k_hw_params ath
  34                 .tcl_ring_retry = true,
  35                 .tx_ring_size = DP_TCL_DATA_RING_SIZE,
  36                 .smp2p_wow_exit = false,
  37 +               .ftm_responder = true,
  38         },
  39         {
  40                 .hw_rev = ATH11K_HW_IPQ6018_HW10,
  41 @@ -198,6 +199,7 @@ static const struct ath11k_hw_params ath
  42                 .tx_ring_size = DP_TCL_DATA_RING_SIZE,
  43                 .smp2p_wow_exit = false,
  44                 .support_fw_mac_sequence = false,
  45 +               .ftm_responder = true,
  46         },
  47         {
  48                 .name = "qca6390 hw2.0",
  49 @@ -282,6 +284,7 @@ static const struct ath11k_hw_params ath
  50                 .tx_ring_size = DP_TCL_DATA_RING_SIZE,
  51                 .smp2p_wow_exit = false,
  52                 .support_fw_mac_sequence = true,
  53 +               .ftm_responder = false,
  54         },
  55         {
  56                 .name = "qcn9074 hw1.0",
  57 @@ -363,6 +366,7 @@ static const struct ath11k_hw_params ath
  58                 .tx_ring_size = DP_TCL_DATA_RING_SIZE,
  59                 .smp2p_wow_exit = false,
  60                 .support_fw_mac_sequence = false,
  61 +               .ftm_responder = true,
  62         },
  63         {
  64                 .name = "wcn6855 hw2.0",
  65 @@ -447,6 +451,7 @@ static const struct ath11k_hw_params ath
  66                 .tx_ring_size = DP_TCL_DATA_RING_SIZE,
  67                 .smp2p_wow_exit = false,
  68                 .support_fw_mac_sequence = true,
  69 +               .ftm_responder = false,
  70         },
  71         {
  72                 .name = "wcn6855 hw2.1",
  73 @@ -529,6 +534,7 @@ static const struct ath11k_hw_params ath
  74                 .tx_ring_size = DP_TCL_DATA_RING_SIZE,
  75                 .smp2p_wow_exit = false,
  76                 .support_fw_mac_sequence = true,
  77 +               .ftm_responder = false,
  78         },
  79         {
  80                 .name = "wcn6750 hw1.0",
  81 @@ -609,6 +615,7 @@ static const struct ath11k_hw_params ath
  82                 .tx_ring_size = DP_TCL_DATA_RING_SIZE_WCN6750,
  83                 .smp2p_wow_exit = true,
  84                 .support_fw_mac_sequence = true,
  85 +               .ftm_responder = false,
  86         },
  87         {
  88                 .hw_rev = ATH11K_HW_IPQ5018_HW10,
  89 @@ -688,6 +695,7 @@ static const struct ath11k_hw_params ath
  90                 .tx_ring_size = DP_TCL_DATA_RING_SIZE,
  91                 .smp2p_wow_exit = false,
  92                 .support_fw_mac_sequence = false,
  93 +               .ftm_responder = true,
  94         },
  95  };
  96
  97 --- a/drivers/net/wireless/ath/ath11k/core.h
  98 +++ b/drivers/net/wireless/ath/ath11k/core.h
  99 @@ -346,6 +346,7 @@ struct ath11k_vif {
 100
 101         bool is_started;
 102         bool is_up;
 103 +       bool ftm_responder;
 104         bool spectral_enabled;
 105         bool ps;
 106         u32 aid;
 107 --- a/drivers/net/wireless/ath/ath11k/hw.h
 108 +++ b/drivers/net/wireless/ath/ath11k/hw.h
 109 @@ -224,6 +224,7 @@ struct ath11k_hw_params {
 110         u32 tx_ring_size;
 111         bool smp2p_wow_exit;
 112         bool support_fw_mac_sequence;
 113 +       bool ftm_responder;
 114  };
 115
 116  struct ath11k_hw_ops {
 117 --- a/drivers/net/wireless/ath/ath11k/mac.c
 118 +++ b/drivers/net/wireless/ath/ath11k/mac.c
 119 @@ -3110,7 +3110,7 @@ static void ath11k_mac_op_bss_info_chang
 120         u16 bitrate;
 121         int ret = 0;
 122         u8 rateidx;
 123 -       u32 rate;
 124 +       u32 rate, param;
 125         u32 ipv4_cnt;
 126
 127         mutex_lock(&ar->conf_mutex);
 128 @@ -3412,6 +3412,20 @@ static void ath11k_mac_op_bss_info_chang
 129                 }
 130         }
 131
 132 +       if (changed & BSS_CHANGED_FTM_RESPONDER &&
 133 +           arvif->ftm_responder != info->ftm_responder &&
 134 +           ar->ab->hw_params.ftm_responder &&
 135 +           (vif->type == NL80211_IFTYPE_AP ||
 136 +            vif->type == NL80211_IFTYPE_MESH_POINT)) {
 137 +               arvif->ftm_responder = info->ftm_responder;
 138 +               param = WMI_VDEV_PARAM_ENABLE_DISABLE_RTT_RESPONDER_ROLE;
 139 +               ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param,
 140 +                                                   arvif->ftm_responder);
 141 +               if (ret)
 142 +                       ath11k_warn(ar->ab, "Failed to set ftm responder %i: %d\n",
 143 +                                   arvif->vdev_id, ret);
 144 +       }
 145 +
 146         if (changed & BSS_CHANGED_FILS_DISCOVERY ||
 147             changed & BSS_CHANGED_UNSOL_BCAST_PROBE_RESP)
 148                 ath11k_mac_fils_discovery(arvif, info);
 149 @@ -9113,6 +9127,10 @@ static int __ath11k_mac_register(struct
 150         wiphy_ext_feature_set(ar->hw->wiphy,
 151                               NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 152
 153 +       if (ab->hw_params.ftm_responder)
 154 +               wiphy_ext_feature_set(ar->hw->wiphy,
 155 +                                     NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
 156 +
 157         ath11k_reg_init(ar);
 158
 159         if (!test_bit(ATH11K_FLAG_RAW_MODE, &ab->dev_flags)) {
 160 --- a/drivers/net/wireless/ath/ath11k/wmi.h
 161 +++ b/drivers/net/wireless/ath/ath11k/wmi.h
 162 @@ -1073,6 +1073,7 @@ enum wmi_tlv_vdev_param {
 163         WMI_VDEV_PARAM_ENABLE_BCAST_PROBE_RESPONSE,
 164         WMI_VDEV_PARAM_FILS_MAX_CHANNEL_GUARD_TIME,
 165         WMI_VDEV_PARAM_HE_LTF = 0x74,
 166 +       WMI_VDEV_PARAM_ENABLE_DISABLE_RTT_RESPONDER_ROLE = 0x7d,
 167         WMI_VDEV_PARAM_BA_MODE = 0x7e,
 168         WMI_VDEV_PARAM_AUTORATE_MISC_CFG = 0x80,
 169         WMI_VDEV_PARAM_SET_HE_SOUNDING_MODE = 0x87,