diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath12k/wmi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/wmi.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c index b38f22118d73..3ec58feab755 100644 --- a/drivers/net/wireless/ath/ath12k/wmi.c +++ b/drivers/net/wireless/ath/ath12k/wmi.c @@ -9319,6 +9319,229 @@ static void ath12k_wmi_process_tpc_stats(struct ath12k_base *ab, } #endif +static int +ath12k_wmi_rssi_dbm_conv_info_evt_subtlv_parser(struct ath12k_base *ab, + u16 tag, u16 len, + const void *ptr, void *data) +{ + const struct ath12k_wmi_rssi_dbm_conv_temp_info_params *temp_info; + const struct ath12k_wmi_rssi_dbm_conv_info_params *param_info; + struct ath12k_wmi_rssi_dbm_conv_info_arg *rssi_info = data; + struct ath12k_wmi_rssi_dbm_conv_param_arg param_arg; + s32 nf_hw_dbm[ATH12K_MAX_NUM_NF_HW_DBM]; + u8 num_20mhz_segments; + s8 min_nf, *nf_ptr; + int i, j; + + switch (tag) { + case WMI_TAG_RSSI_DBM_CONVERSION_PARAMS_INFO: + if (len < sizeof(*param_info)) { + ath12k_warn(ab, + "RSSI dbm conv subtlv 0x%x invalid len %d rcvd", + tag, len); + return -EINVAL; + } + + param_info = ptr; + + param_arg.curr_bw = le32_to_cpu(param_info->curr_bw); + param_arg.curr_rx_chainmask = le32_to_cpu(param_info->curr_rx_chainmask); + + /* The received array is actually a 2D byte-array for per chain, + * per 20MHz subband. Convert to 2D byte-array + */ + nf_ptr = ¶m_arg.nf_hw_dbm[0][0]; + + for (i = 0; i < ATH12K_MAX_NUM_NF_HW_DBM; i++) { + nf_hw_dbm[i] = a_sle32_to_cpu(param_info->nf_hw_dbm[i]); + + for (j = 0; j < 4; j++) { + *nf_ptr = (nf_hw_dbm[i] >> (j * 8)) & 0xFF; + nf_ptr++; + } + } + + switch (param_arg.curr_bw) { + case WMI_CHAN_WIDTH_20: + num_20mhz_segments = 1; + break; + case WMI_CHAN_WIDTH_40: + num_20mhz_segments = 2; + break; + case WMI_CHAN_WIDTH_80: + num_20mhz_segments = 4; + break; + case WMI_CHAN_WIDTH_160: + num_20mhz_segments = 8; + break; + case WMI_CHAN_WIDTH_320: + num_20mhz_segments = 16; + break; + default: + ath12k_warn(ab, "Invalid current bandwidth %d in RSSI dbm event", + param_arg.curr_bw); + /* In error case, still consider the primary 20 MHz segment since + * that would be much better than instead of dropping the whole + * event + */ + num_20mhz_segments = 1; + } + + min_nf = ATH12K_DEFAULT_NOISE_FLOOR; + + for (i = 0; i < ATH12K_MAX_NUM_ANTENNA; i++) { + if (!(param_arg.curr_rx_chainmask & BIT(i))) + continue; + + for (j = 0; j < num_20mhz_segments; j++) { + if (param_arg.nf_hw_dbm[i][j] < min_nf) + min_nf = param_arg.nf_hw_dbm[i][j]; + } + } + + rssi_info->min_nf_dbm = min_nf; + rssi_info->nf_dbm_present = true; + break; + case WMI_TAG_RSSI_DBM_CONVERSION_TEMP_OFFSET_INFO: + if (len < sizeof(*temp_info)) { + ath12k_warn(ab, + "RSSI dbm conv subtlv 0x%x invalid len %d rcvd", + tag, len); + return -EINVAL; + } + + temp_info = ptr; + rssi_info->temp_offset = a_sle32_to_cpu(temp_info->offset); + rssi_info->temp_offset_present = true; + break; + default: + ath12k_dbg(ab, ATH12K_DBG_WMI, + "Unknown subtlv 0x%x in RSSI dbm conversion event\n", tag); + } + + return 0; +} + +static int +ath12k_wmi_rssi_dbm_conv_info_event_parser(struct ath12k_base *ab, + u16 tag, u16 len, + const void *ptr, void *data) +{ + int ret = 0; + + switch (tag) { + case WMI_TAG_RSSI_DBM_CONVERSION_PARAMS_INFO_FIXED_PARAM: + /* Fixed param is already processed*/ + break; + case WMI_TAG_ARRAY_STRUCT: + /* len 0 is expected for array of struct when there + * is no content of that type inside that tlv + */ + if (len == 0) + return 0; + + ret = ath12k_wmi_tlv_iter(ab, ptr, len, + ath12k_wmi_rssi_dbm_conv_info_evt_subtlv_parser, + data); + break; + default: + ath12k_dbg(ab, ATH12K_DBG_WMI, + "Received invalid tag 0x%x for RSSI dbm conv info event\n", + tag); + break; + } + + return ret; +} + +static int +ath12k_wmi_rssi_dbm_conv_info_process_fixed_param(struct ath12k_base *ab, u8 *ptr, + size_t len, int *pdev_id) +{ + struct ath12k_wmi_rssi_dbm_conv_info_fixed_params *fixed_param; + const struct wmi_tlv *tlv; + u16 tlv_tag; + + if (len < (sizeof(*fixed_param) + TLV_HDR_SIZE)) { + ath12k_warn(ab, "invalid RSSI dbm conv event size %zu\n", len); + return -EINVAL; + } + + tlv = (struct wmi_tlv *)ptr; + tlv_tag = le32_get_bits(tlv->header, WMI_TLV_TAG); + ptr += sizeof(*tlv); + + if (tlv_tag != WMI_TAG_RSSI_DBM_CONVERSION_PARAMS_INFO_FIXED_PARAM) { + ath12k_warn(ab, "RSSI dbm conv event received without fixed param tlv\n"); + return -EINVAL; + } + + fixed_param = (struct ath12k_wmi_rssi_dbm_conv_info_fixed_params *)ptr; + *pdev_id = le32_to_cpu(fixed_param->pdev_id); + + return 0; +} + +static void +ath12k_wmi_update_rssi_offsets(struct ath12k *ar, + struct ath12k_wmi_rssi_dbm_conv_info_arg *rssi_info) +{ + struct ath12k_pdev_rssi_offsets *info = &ar->rssi_info; + + lockdep_assert_held(&ar->data_lock); + + if (rssi_info->temp_offset_present) + info->temp_offset = rssi_info->temp_offset; + + if (rssi_info->nf_dbm_present) + info->min_nf_dbm = rssi_info->min_nf_dbm; + + info->noise_floor = info->min_nf_dbm + info->temp_offset; +} + +static void +ath12k_wmi_rssi_dbm_conversion_params_info_event(struct ath12k_base *ab, + struct sk_buff *skb) +{ + struct ath12k_wmi_rssi_dbm_conv_info_arg rssi_info; + struct ath12k *ar; + s32 noise_floor; + u32 pdev_id; + int ret; + + ret = ath12k_wmi_rssi_dbm_conv_info_process_fixed_param(ab, skb->data, skb->len, + &pdev_id); + if (ret) { + ath12k_warn(ab, "failed to parse fixed param in RSSI dbm conv event: %d\n", + ret); + return; + } + + rcu_read_lock(); + ar = ath12k_mac_get_ar_by_pdev_id(ab, pdev_id); + /* If pdev is not active, ignore the event */ + if (!ar) + goto out_unlock; + + ret = ath12k_wmi_tlv_iter(ab, skb->data, skb->len, + ath12k_wmi_rssi_dbm_conv_info_event_parser, + &rssi_info); + if (ret) { + ath12k_warn(ab, "unable to parse RSSI dbm conversion event\n"); + goto out_unlock; + } + + spin_lock_bh(&ar->data_lock); + ath12k_wmi_update_rssi_offsets(ar, &rssi_info); + noise_floor = ath12k_pdev_get_noise_floor(ar); + spin_unlock_bh(&ar->data_lock); + + ath12k_dbg(ab, ATH12K_DBG_WMI, + "RSSI noise floor updated, new value is %d dbm\n", noise_floor); +out_unlock: + rcu_read_unlock(); +} + static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb) { struct wmi_cmd_hdr *cmd_hdr; @@ -9450,6 +9673,9 @@ static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb) case WMI_11D_NEW_COUNTRY_EVENTID: ath12k_reg_11d_new_cc_event(ab, skb); break; + case WMI_PDEV_RSSI_DBM_CONVERSION_PARAMS_INFO_EVENTID: + ath12k_wmi_rssi_dbm_conversion_params_info_event(ab, skb); + break; /* add Unsupported events (rare) here */ case WMI_TBTTOFFSET_EXT_UPDATE_EVENTID: case WMI_PEER_OPER_MODE_CHANGE_EVENTID: |