wifi: ath12k: Support Transmit Rate Buffer Stats

Add support to request transmit rate buffer stats from firmware through
HTT stats type 31. These stats give information such as MCS, NSS and
bandwidth of transmit and input buffer.

Sample output:
-------------
echo 31 > /sys/kernel/debug/ath12k/pci-0000\:06\:00.0/mac0/htt_stats_type
cat /sys/kernel/debug/ath12k/pci-0000\:06\:00.0/mac0/htt_stats
HTT_STATS_PDEV_TX_RATE_TXBF_STATS:
Legacy OFDM Rates: 6 Mbps: 0, 9 Mbps: 0, 12 Mbps: 0, 18 Mbps: 0
24 Mbps: 0, 36 Mbps: 0, 48 Mbps: 0, 54 Mbps: 0
tx_ol_mcs =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0, 8:0, 9:0, 10:0, 11:0, 12:0, 13:0
tx_ibf_mcs =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0, 8:0, 9:0, 10:0, 11:0, 12:0, 13:0
tx_txbf_mcs =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0, 8:0, 9:0, 10:0, 11:0, 12:0, 13:0
tx_ol_nss =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0
tx_ibf_nss =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0
tx_txbf_nss =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0
tx_ol_bw =  0:0, 1:0, 2:0, 3:0, 4:0
half_tx_ol_bw =  0:0, 1:0, 2:0, 3:0, 4:0
quarter_tx_ol_bw =  0:0, 1:0, 2:0, 3:0, 4:0
tx_ibf_bw =  0:0, 1:0, 2:0, 3:0, 4:0
half_tx_ibf_bw =  0:0, 1:0, 2:0, 3:0, 4:0
quarter_tx_ibf_bw =  0:0, 1:0, 2:0, 3:0, 4:0
tx_txbf_bw =  0:0, 1:0, 2:0, 3:0, 4:0
half_tx_txbf_bw =  0:0, 1:0, 2:0, 3:0, 4:0
quarter_tx_txbf_bw =  0:0, 1:0, 2:0, 3:0, 4:0

HTT_STATS_PDEV_TXBF_FLAG_RETURN_STATS:
TXBF_reason_code_stats: 0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00214-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
Signed-off-by: Roopni Devanathan <[email protected]>
Acked-by: Kalle Valo <[email protected]>
Acked-by: Jeff Johnson <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jeff Johnson <[email protected]>

Author: Pradeep Kumar Chitrapu

drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c

@@ -2576,6 +2576,98 @@ ath12k_htt_print_pdev_obss_pd_stats_tlv(const void *tag_buf, u16 tag_len,
 	stats_req->buf_len = len;
 }
 
+static void
+ath12k_htt_print_pdev_tx_rate_txbf_stats_tlv(const void *tag_buf, u16 tag_len,
+					     struct debug_htt_stats_req *stats_req)
+{
+	const struct ath12k_htt_pdev_txrate_txbf_stats_tlv *htt_stats_buf = tag_buf;
+	u32 buf_len = ATH12K_HTT_STATS_BUF_SIZE;
+	u32 len = stats_req->buf_len;
+	u8 *buf = stats_req->buf;
+	u8 i;
+
+	if (tag_len < sizeof(*htt_stats_buf))
+		return;
+
+	len += scnprintf(buf + len, buf_len - len,
+			 "HTT_STATS_PDEV_TX_RATE_TXBF_STATS:\n");
+	len += scnprintf(buf + len, buf_len - len, "Legacy OFDM Rates: 6 Mbps: %u, ",
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[0]));
+	len += scnprintf(buf + len, buf_len - len, "9 Mbps: %u, 12 Mbps: %u, ",
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[1]),
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[2]));
+	len += scnprintf(buf + len, buf_len - len, "18 Mbps: %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[3]));
+	len += scnprintf(buf + len, buf_len - len, "24 Mbps: %u, 36 Mbps: %u, ",
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[4]),
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[5]));
+	len += scnprintf(buf + len, buf_len - len, "48 Mbps: %u, 54 Mbps: %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[6]),
+			 le32_to_cpu(htt_stats_buf->tx_legacy_ofdm_rate[7]));
+
+	len += print_array_to_buf(buf, len, "tx_ol_mcs", htt_stats_buf->tx_su_ol_mcs,
+				  ATH12K_HTT_TX_BF_RATE_STATS_NUM_MCS_COUNTERS, "\n");
+	len += print_array_to_buf(buf, len, "tx_ibf_mcs", htt_stats_buf->tx_su_ibf_mcs,
+				  ATH12K_HTT_TX_BF_RATE_STATS_NUM_MCS_COUNTERS, "\n");
+	len += print_array_to_buf(buf, len, "tx_txbf_mcs", htt_stats_buf->tx_su_txbf_mcs,
+				  ATH12K_HTT_TX_BF_RATE_STATS_NUM_MCS_COUNTERS, "\n");
+	len += print_array_to_buf_index(buf, len, "tx_ol_nss", 1,
+					htt_stats_buf->tx_su_ol_nss,
+					ATH12K_HTT_TX_PDEV_STATS_NUM_SPATIAL_STREAMS,
+					"\n");
+	len += print_array_to_buf_index(buf, len, "tx_ibf_nss", 1,
+					htt_stats_buf->tx_su_ibf_nss,
+					ATH12K_HTT_TX_PDEV_STATS_NUM_SPATIAL_STREAMS,
+					"\n");
+	len += print_array_to_buf_index(buf, len, "tx_txbf_nss", 1,
+					htt_stats_buf->tx_su_txbf_nss,
+					ATH12K_HTT_TX_PDEV_STATS_NUM_SPATIAL_STREAMS,
+					"\n");
+	len += print_array_to_buf(buf, len, "tx_ol_bw", htt_stats_buf->tx_su_ol_bw,
+				  ATH12K_HTT_TXBF_NUM_BW_CNTRS, "\n");
+	for (i = 0; i < ATH12K_HTT_TXBF_NUM_REDUCED_CHAN_TYPES; i++)
+		len += print_array_to_buf(buf, len, i ? "quarter_tx_ol_bw" :
+					  "half_tx_ol_bw",
+					  htt_stats_buf->ol[i],
+					  ATH12K_HTT_TXBF_NUM_BW_CNTRS,
+					  "\n");
+
+	len += print_array_to_buf(buf, len, "tx_ibf_bw", htt_stats_buf->tx_su_ibf_bw,
+				  ATH12K_HTT_TXBF_NUM_BW_CNTRS, "\n");
+	for (i = 0; i < ATH12K_HTT_TXBF_NUM_REDUCED_CHAN_TYPES; i++)
+		len += print_array_to_buf(buf, len, i ? "quarter_tx_ibf_bw" :
+					  "half_tx_ibf_bw",
+					  htt_stats_buf->ibf[i],
+					  ATH12K_HTT_TXBF_NUM_BW_CNTRS,
+					  "\n");
+
+	len += print_array_to_buf(buf, len, "tx_txbf_bw", htt_stats_buf->tx_su_txbf_bw,
+				  ATH12K_HTT_TXBF_NUM_BW_CNTRS, "\n");
+	for (i = 0; i < ATH12K_HTT_TXBF_NUM_REDUCED_CHAN_TYPES; i++)
+		len += print_array_to_buf(buf, len, i ? "quarter_tx_txbf_bw" :
+					  "half_tx_txbf_bw",
+					  htt_stats_buf->txbf[i],
+					  ATH12K_HTT_TXBF_NUM_BW_CNTRS,
+					  "\n");
+	len += scnprintf(buf + len, buf_len - len, "\n");
+
+	len += scnprintf(buf + len, buf_len - len,
+			 "HTT_STATS_PDEV_TXBF_FLAG_RETURN_STATS:\n");
+	len += scnprintf(buf + len, buf_len - len, "TXBF_reason_code_stats: 0:%u, 1:%u,",
+			 le32_to_cpu(htt_stats_buf->txbf_flag_set_mu_mode),
+			 le32_to_cpu(htt_stats_buf->txbf_flag_set_final_status));
+	len += scnprintf(buf + len, buf_len - len, " 2:%u, 3:%u, 4:%u, 5:%u, ",
+			 le32_to_cpu(htt_stats_buf->txbf_flag_not_set_verified_txbf_mode),
+			 le32_to_cpu(htt_stats_buf->txbf_flag_not_set_disable_p2p_access),
+			 le32_to_cpu(htt_stats_buf->txbf_flag_not_set_max_nss_in_he160),
+			 le32_to_cpu(htt_stats_buf->txbf_flag_not_set_disable_uldlofdma));
+	len += scnprintf(buf + len, buf_len - len, "6:%u, 7:%u\n\n",
+			 le32_to_cpu(htt_stats_buf->txbf_flag_not_set_mcs_threshold_val),
+			 le32_to_cpu(htt_stats_buf->txbf_flag_not_set_final_status));
+
+	stats_req->buf_len = len;
+}
+
 static void ath12k_htt_print_dlpager_entry(const struct ath12k_htt_pgs_info *pg_info,
 					   int idx, char *str_buf)
 {
@@ -3508,6 +3600,9 @@ static int ath12k_dbg_htt_ext_stats_parse(struct ath12k_base *ab,
 	case HTT_STATS_PDEV_OBSS_PD_TAG:
 		ath12k_htt_print_pdev_obss_pd_stats_tlv(tag_buf, len, stats_req);
 		break;
+	case HTT_STATS_PDEV_TX_RATE_TXBF_STATS_TAG:
+		ath12k_htt_print_pdev_tx_rate_txbf_stats_tlv(tag_buf, len, stats_req);
+		break;
 	case HTT_STATS_DLPAGER_STATS_TAG:
 		ath12k_htt_print_dlpager_stats_tlv(tag_buf, len, stats_req);
 		break;

drivers/net/wireless/ath/ath12k/debugfs_htt_stats.h

@@ -135,6 +135,7 @@ enum ath12k_dbg_htt_ext_stats_type {
 	ATH12K_DBG_HTT_EXT_STATS_PDEV_TX_MU		= 17,
 	ATH12K_DBG_HTT_EXT_STATS_PDEV_CCA_STATS		= 19,
 	ATH12K_DBG_HTT_EXT_STATS_PDEV_OBSS_PD_STATS	= 23,
+	ATH12K_DBG_HTT_EXT_STATS_PDEV_TX_RATE_TXBF	= 31,
 	ATH12K_DBG_HTT_EXT_STATS_DLPAGER_STATS		= 36,
 	ATH12K_DBG_HTT_EXT_PHY_COUNTERS_AND_PHY_STATS	= 37,
 	ATH12K_DBG_HTT_EXT_VDEVS_TXRX_STATS		= 38,
@@ -197,6 +198,7 @@ enum ath12k_dbg_htt_tlv_tag {
 	HTT_STATS_HW_WAR_TAG				= 89,
 	HTT_STATS_SCHED_TXQ_SUPERCYCLE_TRIGGER_TAG	= 100,
 	HTT_STATS_PDEV_CTRL_PATH_TX_STATS_TAG		= 102,
+	HTT_STATS_PDEV_TX_RATE_TXBF_STATS_TAG		= 108,
 	HTT_STATS_TX_SELFGEN_AC_SCHED_STATUS_STATS_TAG	= 111,
 	HTT_STATS_TX_SELFGEN_AX_SCHED_STATUS_STATS_TAG	= 112,
 	HTT_STATS_DLPAGER_STATS_TAG			= 120,
@@ -1068,6 +1070,36 @@ struct ath12k_htt_pdev_obss_pd_stats_tlv {
 	__le32 num_sr_ppdu_abort_flush_cnt;
 } __packed;
 
+#define ATH12K_HTT_TX_BF_RATE_STATS_NUM_MCS_COUNTERS		14
+#define ATH12K_HTT_TX_PDEV_STATS_NUM_LEGACY_OFDM_STATS		8
+#define ATH12K_HTT_TX_PDEV_STATS_NUM_SPATIAL_STREAMS		8
+#define ATH12K_HTT_TXBF_NUM_BW_CNTRS				5
+#define ATH12K_HTT_TXBF_NUM_REDUCED_CHAN_TYPES			2
+
+struct ath12k_htt_pdev_txrate_txbf_stats_tlv {
+	__le32 tx_su_txbf_mcs[ATH12K_HTT_TX_BF_RATE_STATS_NUM_MCS_COUNTERS];
+	__le32 tx_su_ibf_mcs[ATH12K_HTT_TX_BF_RATE_STATS_NUM_MCS_COUNTERS];
+	__le32 tx_su_ol_mcs[ATH12K_HTT_TX_BF_RATE_STATS_NUM_MCS_COUNTERS];
+	__le32 tx_su_txbf_nss[ATH12K_HTT_TX_PDEV_STATS_NUM_SPATIAL_STREAMS];
+	__le32 tx_su_ibf_nss[ATH12K_HTT_TX_PDEV_STATS_NUM_SPATIAL_STREAMS];
+	__le32 tx_su_ol_nss[ATH12K_HTT_TX_PDEV_STATS_NUM_SPATIAL_STREAMS];
+	__le32 tx_su_txbf_bw[ATH12K_HTT_TXBF_NUM_BW_CNTRS];
+	__le32 tx_su_ibf_bw[ATH12K_HTT_TXBF_NUM_BW_CNTRS];
+	__le32 tx_su_ol_bw[ATH12K_HTT_TXBF_NUM_BW_CNTRS];
+	__le32 tx_legacy_ofdm_rate[ATH12K_HTT_TX_PDEV_STATS_NUM_LEGACY_OFDM_STATS];
+	__le32 txbf[ATH12K_HTT_TXBF_NUM_REDUCED_CHAN_TYPES][ATH12K_HTT_TXBF_NUM_BW_CNTRS];
+	__le32 ibf[ATH12K_HTT_TXBF_NUM_REDUCED_CHAN_TYPES][ATH12K_HTT_TXBF_NUM_BW_CNTRS];
+	__le32 ol[ATH12K_HTT_TXBF_NUM_REDUCED_CHAN_TYPES][ATH12K_HTT_TXBF_NUM_BW_CNTRS];
+	__le32 txbf_flag_set_mu_mode;
+	__le32 txbf_flag_set_final_status;
+	__le32 txbf_flag_not_set_verified_txbf_mode;
+	__le32 txbf_flag_not_set_disable_p2p_access;
+	__le32 txbf_flag_not_set_max_nss_in_he160;
+	__le32 txbf_flag_not_set_disable_uldlofdma;
+	__le32 txbf_flag_not_set_mcs_threshold_val;
+	__le32 txbf_flag_not_set_final_status;
+} __packed;
+
 enum ath12k_htt_stats_page_lock_state {
 	ATH12K_HTT_STATS_PAGE_LOCKED	= 0,
 	ATH12K_HTT_STATS_PAGE_UNLOCKED	= 1,