From 678e8414bf4eadd58dff8845b632d1cb30abc7f6 Mon Sep 17 00:00:00 2001 From: Sriram R Date: Mon, 16 Mar 2020 14:58:40 +0530 Subject: ath11k: Supporting RX ring backpressure HTT event and stats handling The Firmware sends HTT event to host whenever there is a backpressure on RX rings, Handling such event and dumping info on the console under the "ATH11K_DBG_DP_HTT" debug level. Fetching RX ring backpressure histogram from FW via htt_stats debugfs. #echo "24" > /sys/kernel/debug/ath11k/ipq8074/macX/htt_stats_type #cat /sys/kernel/debug/ath11k/ipq8074/macX/htt_stats Signed-off-by: Vikas Patel Signed-off-by: Sriram R Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath11k/debug_htt_stats.c | 44 +++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'drivers/net/wireless/ath/ath11k/debug_htt_stats.c') diff --git a/drivers/net/wireless/ath/ath11k/debug_htt_stats.c b/drivers/net/wireless/ath/ath11k/debug_htt_stats.c index f44dec839e70..5db0c27de475 100644 --- a/drivers/net/wireless/ath/ath11k/debug_htt_stats.c +++ b/drivers/net/wireless/ath/ath11k/debug_htt_stats.c @@ -3854,6 +3854,47 @@ htt_print_pdev_obss_pd_stats_tlv_v(const void *tag_buf, stats_req->buf_len = len; } +static inline void htt_print_backpressure_stats_tlv_v(const u32 *tag_buf, + u8 *data) +{ + struct debug_htt_stats_req *stats_req = + (struct debug_htt_stats_req *)data; + struct htt_ring_backpressure_stats_tlv *htt_stats_buf = + (struct htt_ring_backpressure_stats_tlv *)tag_buf; + int i; + u8 *buf = stats_req->buf; + u32 len = stats_req->buf_len; + u32 buf_len = ATH11K_HTT_STATS_BUF_SIZE; + + len += HTT_DBG_OUT(buf + len, buf_len - len, "pdev_id = %u", + htt_stats_buf->pdev_id); + len += HTT_DBG_OUT(buf + len, buf_len - len, "current_head_idx = %u", + htt_stats_buf->current_head_idx); + len += HTT_DBG_OUT(buf + len, buf_len - len, "current_tail_idx = %u", + htt_stats_buf->current_tail_idx); + len += HTT_DBG_OUT(buf + len, buf_len - len, "num_htt_msgs_sent = %u", + htt_stats_buf->num_htt_msgs_sent); + len += HTT_DBG_OUT(buf + len, buf_len - len, + "backpressure_time_ms = %u", + htt_stats_buf->backpressure_time_ms); + + for (i = 0; i < 5; i++) + len += HTT_DBG_OUT(buf + len, buf_len - len, + "backpressure_hist_%u = %u", + i + 1, htt_stats_buf->backpressure_hist[i]); + + len += HTT_DBG_OUT(buf + len, buf_len - len, + "============================"); + + if (len >= buf_len) { + buf[buf_len - 1] = 0; + stats_req->buf_len = buf_len - 1; + } else { + buf[len] = 0; + stats_req->buf_len = len; + } +} + static inline void htt_htt_stats_debug_dump(const u32 *tag_buf, struct debug_htt_stats_req *stats_req) { @@ -4246,6 +4287,9 @@ static int ath11k_dbg_htt_ext_stats_parse(struct ath11k_base *ab, case HTT_STATS_PDEV_OBSS_PD_TAG: htt_print_pdev_obss_pd_stats_tlv_v(tag_buf, stats_req); break; + case HTT_STATS_RING_BACKPRESSURE_STATS_TAG: + htt_print_backpressure_stats_tlv_v(tag_buf, user_data); + break; default: break; } -- cgit v1.2.3