From patchwork Mon Mar 16 09:28:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sriram R X-Patchwork-Id: 216280 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4AA38C0044D for ; Mon, 16 Mar 2020 09:29:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 14C0220658 for ; Mon, 16 Mar 2020 09:29:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="SmhzKnE4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730432AbgCPJ3s (ORCPT ); Mon, 16 Mar 2020 05:29:48 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:37498 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730356AbgCPJ3s (ORCPT ); Mon, 16 Mar 2020 05:29:48 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1584350987; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=Lsq8V0H3Vmfrb9LCKmRWPHRvl6qaZXlN6bQOkA1cwEE=; b=SmhzKnE4FBWlAit2jwKDkJAY8IC6M8/Tt4AAYar0WXmpzO7djQ6zunWMWtXV7NMT9MA89+s2 G5ALm+Uwmi5YUuj7L28OWrdD0FUm4+0O8FNW01eqRCS9lwSXuO3jXU2F0l2YBQfSK9DPpMdX ++kovPDhZZk7WUfB7ArMt96M54I= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyI3YTAwOSIsICJsaW51eC13aXJlbGVzc0B2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e6f46fc.7fcbb746c5a8-smtp-out-n02; Mon, 16 Mar 2020 09:29:32 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 374ECC433BA; Mon, 16 Mar 2020 09:29:32 +0000 (UTC) Received: from checstp253621-lin.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: srirrama) by smtp.codeaurora.org (Postfix) with ESMTPSA id B146AC433CB; Mon, 16 Mar 2020 09:29:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B146AC433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=srirrama@codeaurora.org From: Sriram R To: ath11k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, Sriram R , Vikas Patel Subject: [PATCH v3] ath11k: Supporting RX ring backpressure HTT event and stats handling Date: Mon, 16 Mar 2020 14:58:40 +0530 Message-Id: <1584350920-20688-1-git-send-email-srirrama@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org 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 --- v3: Rebased on top of master drivers/net/wireless/ath/ath11k/debug.h | 2 ++ drivers/net/wireless/ath/ath11k/debug_htt_stats.c | 44 +++++++++++++++++++++++ drivers/net/wireless/ath/ath11k/debug_htt_stats.h | 28 +++++++++++++++ drivers/net/wireless/ath/ath11k/dp.h | 8 +++++ drivers/net/wireless/ath/ath11k/dp_rx.c | 26 ++++++++++++++ 5 files changed, 108 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/debug.h b/drivers/net/wireless/ath/ath11k/debug.h index 427d3ac..97e7306 100644 --- a/drivers/net/wireless/ath/ath11k/debug.h +++ b/drivers/net/wireless/ath/ath11k/debug.h @@ -53,6 +53,8 @@ enum ath11k_dbg_htt_ext_stats_type { ATH11K_DBG_HTT_EXT_STATS_TWT_SESSIONS = 20, ATH11K_DBG_HTT_EXT_STATS_REO_RESOURCE_STATS = 21, ATH11K_DBG_HTT_EXT_STATS_TX_SOUNDING_INFO = 22, + ATH11K_DBG_HTT_EXT_STATS_PDEV_OBSS_PD_STATS = 23, + ATH11K_DBG_HTT_EXT_STATS_RING_BACKPRESSURE_STATS = 24, /* keep this last */ ATH11K_DBG_HTT_NUM_EXT_STATS, diff --git a/drivers/net/wireless/ath/ath11k/debug_htt_stats.c b/drivers/net/wireless/ath/ath11k/debug_htt_stats.c index f44dec8..5db0c27 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; } diff --git a/drivers/net/wireless/ath/ath11k/debug_htt_stats.h b/drivers/net/wireless/ath/ath11k/debug_htt_stats.h index 4bdb62d..23a6baa 100644 --- a/drivers/net/wireless/ath/ath11k/debug_htt_stats.h +++ b/drivers/net/wireless/ath/ath11k/debug_htt_stats.h @@ -100,6 +100,8 @@ enum htt_tlv_tag_t { HTT_STATS_SCHED_TXQ_SCHED_ORDER_SU_TAG = 86, HTT_STATS_SCHED_TXQ_SCHED_INELIGIBILITY_TAG = 87, HTT_STATS_PDEV_OBSS_PD_TAG = 88, + HTT_STATS_HW_WAR_TAG = 89, + HTT_STATS_RING_BACKPRESSURE_STATS_TAG = 90, HTT_STATS_MAX_TAG, }; @@ -1659,4 +1661,30 @@ struct htt_pdev_obss_pd_stats_tlv { }; void ath11k_debug_htt_stats_init(struct ath11k *ar); + +struct htt_ring_backpressure_stats_tlv { + u32 pdev_id; + u32 current_head_idx; + u32 current_tail_idx; + u32 num_htt_msgs_sent; + /* Time in milliseconds for which the ring has been in + * its current backpressure condition + */ + u32 backpressure_time_ms; + /* backpressure_hist - histogram showing how many times + * different degrees of backpressure duration occurred: + * Index 0 indicates the number of times ring was + * continuously in backpressure state for 100 - 200ms. + * Index 1 indicates the number of times ring was + * continuously in backpressure state for 200 - 300ms. + * Index 2 indicates the number of times ring was + * continuously in backpressure state for 300 - 400ms. + * Index 3 indicates the number of times ring was + * continuously in backpressure state for 400 - 500ms. + * Index 4 indicates the number of times ring was + * continuously in backpressure state beyond 500ms. + */ + u32 backpressure_hist[5]; +}; + #endif diff --git a/drivers/net/wireless/ath/ath11k/dp.h b/drivers/net/wireless/ath/ath11k/dp.h index f9b66de..551f9c9 100644 --- a/drivers/net/wireless/ath/ath11k/dp.h +++ b/drivers/net/wireless/ath/ath11k/dp.h @@ -936,6 +936,7 @@ enum htt_t2h_msg_type { HTT_T2H_MSG_TYPE_PEER_UNMAP = 0x1f, HTT_T2H_MSG_TYPE_PPDU_STATS_IND = 0x1d, HTT_T2H_MSG_TYPE_EXT_STATS_CONF = 0x1c, + HTT_T2H_MSG_TYPE_BKPRESSURE_EVENT_IND = 0x24, }; #define HTT_TARGET_VERSION_MAJOR 3 @@ -984,6 +985,13 @@ struct htt_resp_msg { }; } __packed; +#define HTT_BACKPRESSURE_EVENT_PDEV_ID_M GENMASK(15, 8) +#define HTT_BACKPRESSURE_EVENT_RING_TYPE_M GENMASK(23, 16) +#define HTT_BACKPRESSURE_EVENT_RING_ID_M GENMASK(31, 24) + +#define HTT_BACKPRESSURE_EVENT_HP_M GENMASK(15, 0) +#define HTT_BACKPRESSURE_EVENT_TP_M GENMASK(31, 16) + /* ppdu stats * * @details diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c index aba2dca..fbb67c9 100644 --- a/drivers/net/wireless/ath/ath11k/dp_rx.c +++ b/drivers/net/wireless/ath/ath11k/dp_rx.c @@ -1494,6 +1494,29 @@ static void ath11k_htt_pktlog(struct ath11k_base *ab, struct sk_buff *skb) trace_ath11k_htt_pktlog(ar, data->payload, hdr->size); } +static void ath11k_htt_backpressure_event_handler(struct ath11k_base *ab, + struct sk_buff *skb) +{ + u32 *data = (u32 *)skb->data; + u8 pdev_id, ring_type, ring_id; + u16 hp, tp; + u32 backpressure_time; + + pdev_id = FIELD_GET(HTT_BACKPRESSURE_EVENT_PDEV_ID_M, *data); + ring_type = FIELD_GET(HTT_BACKPRESSURE_EVENT_RING_TYPE_M, *data); + ring_id = FIELD_GET(HTT_BACKPRESSURE_EVENT_RING_ID_M, *data); + ++data; + + hp = FIELD_GET(HTT_BACKPRESSURE_EVENT_HP_M, *data); + tp = FIELD_GET(HTT_BACKPRESSURE_EVENT_TP_M, *data); + ++data; + + backpressure_time = *data; + + ath11k_dbg(ab, ATH11K_DBG_DP_HTT, "htt backpressure event, pdev %d, ring type %d,ring id %d, hp %d tp %d, backpressure time %d\n", + pdev_id, ring_type, ring_id, hp, tp, backpressure_time); +} + void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab, struct sk_buff *skb) { @@ -1543,6 +1566,9 @@ void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab, case HTT_T2H_MSG_TYPE_PKTLOG: ath11k_htt_pktlog(ab, skb); break; + case HTT_T2H_MSG_TYPE_BKPRESSURE_EVENT_IND: + ath11k_htt_backpressure_event_handler(ab, skb); + break; default: ath11k_warn(ab, "htt event %d not handled\n", type); break;