From patchwork Mon Sep 2 09:22:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Gong X-Patchwork-Id: 11126223 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3FD601399 for ; Mon, 2 Sep 2019 09:22:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0F6D121874 for ; Mon, 2 Sep 2019 09:22:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="nV4nzrA5"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="Ed1vV2NV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730392AbfIBJWo (ORCPT ); Mon, 2 Sep 2019 05:22:44 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:60386 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729981AbfIBJWo (ORCPT ); Mon, 2 Sep 2019 05:22:44 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 72BE36083E; Mon, 2 Sep 2019 09:22:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1567416162; bh=KmQ+m/9RFEnqng2G9SyI4/NRF4InGHFrhBCzMBSL6Ik=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nV4nzrA5vRo/Y67dzoFxGc1EwHd3FCkonUjWIau8/hkfcJ2+1acOrlBPhjoQoym0g gbf14aJC1LlXlWPAM8p0DtJznundPvaihxrIaNSmlyCo1wZB5GzWsv/Bxr8h3k/OQD kFg8Vqg+opqXzrdaX8I6KXFwJiqddFLiUgvSd4fA= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_INVALID,DKIM_SIGNED,SPF_NONE autolearn=no autolearn_force=no version=3.4.0 Received: from wgong-HP-Z240-SFF-Workstation.qca.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: wgong@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id E40B26087F; Mon, 2 Sep 2019 09:22:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1567416161; bh=KmQ+m/9RFEnqng2G9SyI4/NRF4InGHFrhBCzMBSL6Ik=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ed1vV2NVqq28bMXstmPmmBBgJiX5RY4/h3ZtozzafBgjiRyg4stftDg6QPcMykQhj O+CVGWEiMn7eFPZSVEeDeofPJuIcDgOhk+ZhvH80qlp5vsQ67YKu/WuRaOICtehI8E KUPiqh0JfGObcAIEtXLiMz2P7kvIxephZTPcbl+E= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E40B26087F Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=wgong@codeaurora.org From: Wen Gong To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org Subject: [PATCH v4 2/8] ath10k: enable RX bundle receive for sdio Date: Mon, 2 Sep 2019 17:22:20 +0800 Message-Id: <1567416146-14403-3-git-send-email-wgong@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1567416146-14403-1-git-send-email-wgong@codeaurora.org> References: <1567416146-14403-1-git-send-email-wgong@codeaurora.org> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Alagu Sankar The existing implementation of initiating multiple sdio transfers for receive bundling is slowing down the receive speed. Combining the transfers using a bundle method would be ideal. The transmission utilization ratio for sdio bus for small packet is slow, because the space and time cost for sdio bus is same for large length packet and small length packet. So the speed of data for large length packet is higher than small length. Test result of different length of data: data packet(byte) cost time(us) calculated rate(Mbps) 256 28 73 512 33 124 1024 35 234 1792 45 318 14336 168 682 28672 333 688 57344 660 695 Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1. Signed-off-by: Alagu Sankar Signed-off-by: Wen Gong --- v2: fix incorrect skb tail of rx bundle in ath10k_sdio_mbox_rx_process_packet v3: change some code style split fix incorrect skb tail of rx bundle to patch "adjust skb length in ath10k_sdio_mbox_rx_packet" v4: add err handle in ath10k_sdio_mbox_rx_fetch_bundle drivers/net/wireless/ath/ath10k/sdio.c | 108 ++++++++++++++++++++++----------- drivers/net/wireless/ath/ath10k/sdio.h | 7 ++- 2 files changed, 76 insertions(+), 39 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c index 1127e44..d7ffcd5 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.c +++ b/drivers/net/wireless/ath/ath10k/sdio.c @@ -24,6 +24,9 @@ #include "trace.h" #include "sdio.h" +#define ATH10K_SDIO_DMA_BUF_SIZE (32 * 1024) +#define ATH10K_SDIO_VSG_BUF_SIZE (32 * 1024) + /* inlined helper functions */ static inline int ath10k_sdio_calc_txrx_padded_len(struct ath10k_sdio *ar_sdio, @@ -484,11 +487,11 @@ static int ath10k_sdio_mbox_rx_process_packets(struct ath10k *ar, return ret; } -static int ath10k_sdio_mbox_alloc_pkt_bundle(struct ath10k *ar, - struct ath10k_sdio_rx_data *rx_pkts, - struct ath10k_htc_hdr *htc_hdr, - size_t full_len, size_t act_len, - size_t *bndl_cnt) +static int ath10k_sdio_mbox_alloc_bundle(struct ath10k *ar, + struct ath10k_sdio_rx_data *rx_pkts, + struct ath10k_htc_hdr *htc_hdr, + size_t full_len, size_t act_len, + size_t *bndl_cnt) { int ret, i; @@ -529,6 +532,7 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, size_t full_len, act_len; bool last_in_bundle; int ret, i; + int pkt_cnt = 0; if (n_lookaheads > ATH10K_SDIO_MAX_RX_MSGS) { ath10k_warn(ar, @@ -572,20 +576,22 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, */ size_t bndl_cnt; - ret = ath10k_sdio_mbox_alloc_pkt_bundle(ar, - &ar_sdio->rx_pkts[i], - htc_hdr, - full_len, - act_len, - &bndl_cnt); + struct ath10k_sdio_rx_data *rx_pkts = + &ar_sdio->rx_pkts[pkt_cnt]; + + ret = ath10k_sdio_mbox_alloc_bundle(ar, + rx_pkts, + htc_hdr, + full_len, + act_len, + &bndl_cnt); if (ret) { ath10k_warn(ar, "alloc_bundle error %d\n", ret); goto err; } - n_lookaheads += bndl_cnt; - i += bndl_cnt; + pkt_cnt += bndl_cnt; /*Next buffer will be the last in the bundle */ last_in_bundle = true; } @@ -597,7 +603,7 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, if (htc_hdr->flags & ATH10K_HTC_FLAGS_RECV_1MORE_BLOCK) full_len += ATH10K_HIF_MBOX_BLOCK_SIZE; - ret = ath10k_sdio_mbox_alloc_rx_pkt(&ar_sdio->rx_pkts[i], + ret = ath10k_sdio_mbox_alloc_rx_pkt(&ar_sdio->rx_pkts[pkt_cnt], act_len, full_len, last_in_bundle, @@ -606,9 +612,10 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, ath10k_warn(ar, "alloc_rx_pkt error %d\n", ret); goto err; } + pkt_cnt++; } - ar_sdio->n_rx_pkts = i; + ar_sdio->n_rx_pkts = pkt_cnt; return 0; @@ -622,10 +629,10 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, return ret; } -static int ath10k_sdio_mbox_rx_packet(struct ath10k *ar, - struct ath10k_sdio_rx_data *pkt) +static int ath10k_sdio_mbox_rx_fetch(struct ath10k *ar) { struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar); + struct ath10k_sdio_rx_data *pkt = &ar_sdio->rx_pkts[0]; struct sk_buff *skb = pkt->skb; struct ath10k_htc_hdr *htc_hdr; int ret; @@ -633,46 +640,64 @@ static int ath10k_sdio_mbox_rx_packet(struct ath10k *ar, ret = ath10k_sdio_readsb(ar, ar_sdio->mbox_info.htc_addr, skb->data, pkt->alloc_len); - if (!ret) { - /* Update actual length. The original length may be incorrect, - * as the FW will bundle multiple packets as long as their sizes - * fit within the same aligned length (pkt->alloc_len). - */ - htc_hdr = (struct ath10k_htc_hdr *)skb->data; - pkt->act_len = le16_to_cpu(htc_hdr->len) + sizeof(*htc_hdr); - if (pkt->act_len <= pkt->alloc_len) { - skb_put(skb, pkt->act_len); - } else { - ath10k_warn(ar, "rx packet too large (%zu > %zu)\n", - pkt->act_len, pkt->alloc_len); - ret = -EMSGSIZE; - } + if (ret) { + ar_sdio->n_rx_pkts = 0; + ath10k_sdio_mbox_free_rx_pkt(pkt); + return ret; } + htc_hdr = (struct ath10k_htc_hdr *)skb->data; + pkt->act_len = le16_to_cpu(htc_hdr->len) + sizeof(*htc_hdr); pkt->status = ret; + skb_put(skb, pkt->act_len); return ret; } -static int ath10k_sdio_mbox_rx_fetch(struct ath10k *ar) +static int ath10k_sdio_mbox_rx_fetch_bundle(struct ath10k *ar) { struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar); + struct ath10k_sdio_rx_data *pkt; + struct ath10k_htc_hdr *htc_hdr; int ret, i; + u32 pkt_offset, virt_pkt_len; + virt_pkt_len = 0; for (i = 0; i < ar_sdio->n_rx_pkts; i++) { - ret = ath10k_sdio_mbox_rx_packet(ar, - &ar_sdio->rx_pkts[i]); + virt_pkt_len += ar_sdio->rx_pkts[i].alloc_len; + } + + if (virt_pkt_len < ATH10K_SDIO_DMA_BUF_SIZE) { + ret = ath10k_sdio_readsb(ar, ar_sdio->mbox_info.htc_addr, + ar_sdio->vsg_buffer, virt_pkt_len); if (ret) goto err; + } else { + ath10k_err(ar, "size exceeding limit %d\n", virt_pkt_len); + ret = -ENOMEM; + goto err; + } + + pkt_offset = 0; + for (i = 0; i < ar_sdio->n_rx_pkts; i++) { + pkt = &ar_sdio->rx_pkts[i]; + htc_hdr = (struct ath10k_htc_hdr *)(ar_sdio->vsg_buffer + pkt_offset); + pkt->act_len = le16_to_cpu(htc_hdr->len) + sizeof(*htc_hdr); + + skb_put_data(pkt->skb, htc_hdr, pkt->act_len); + pkt->status = 0; + pkt_offset += pkt->alloc_len; } return 0; err: /* Free all packets that was not successfully fetched. */ - for (; i < ar_sdio->n_rx_pkts; i++) + for (i = 0; i < ar_sdio->n_rx_pkts; i++) ath10k_sdio_mbox_free_rx_pkt(&ar_sdio->rx_pkts[i]); + ar_sdio->n_rx_pkts = 0; + return ret; } @@ -715,7 +740,10 @@ static int ath10k_sdio_mbox_rxmsg_pending_handler(struct ath10k *ar, */ *done = false; - ret = ath10k_sdio_mbox_rx_fetch(ar); + if (ar_sdio->n_rx_pkts > 1) + ret = ath10k_sdio_mbox_rx_fetch_bundle(ar); + else + ret = ath10k_sdio_mbox_rx_fetch(ar); /* Process fetched packets. This will potentially update * n_lookaheads depending on if the packets contain lookahead @@ -1123,7 +1151,7 @@ static int ath10k_sdio_bmi_get_rx_lookahead(struct ath10k *ar) MBOX_HOST_INT_STATUS_ADDRESS, &rx_word); if (ret) { - ath10k_warn(ar, "unable to read RX_LOOKAHEAD_VALID: %d\n", ret); + ath10k_warn(ar, "unable to read rx_lookahd: %d\n", ret); return ret; } @@ -2018,6 +2046,12 @@ static int ath10k_sdio_probe(struct sdio_func *func, goto err_core_destroy; } + ar_sdio->vsg_buffer = devm_kmalloc(ar->dev, ATH10K_SDIO_VSG_BUF_SIZE, GFP_KERNEL); + if (!ar_sdio->vsg_buffer) { + ret = -ENOMEM; + goto err_core_destroy; + } + ar_sdio->irq_data.irq_en_reg = devm_kzalloc(ar->dev, sizeof(struct ath10k_sdio_irq_enable_regs), GFP_KERNEL); diff --git a/drivers/net/wireless/ath/ath10k/sdio.h b/drivers/net/wireless/ath/ath10k/sdio.h index b8c7ac0..4896eca 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.h +++ b/drivers/net/wireless/ath/ath10k/sdio.h @@ -138,8 +138,8 @@ struct ath10k_sdio_irq_proc_regs { u8 rx_lookahead_valid; u8 host_int_status2; u8 gmbox_rx_avail; - __le32 rx_lookahead[2]; - __le32 rx_gmbox_lookahead_alias[2]; + __le32 rx_lookahead[2 * ATH10K_HIF_MBOX_NUM_MAX]; + __le32 int_status_enable; }; struct ath10k_sdio_irq_enable_regs { @@ -196,6 +196,9 @@ struct ath10k_sdio { struct ath10k *ar; struct ath10k_sdio_irq_data irq_data; + /* temporary buffer for sdio read */ + u8 *vsg_buffer; + /* temporary buffer for BMI requests */ u8 *bmi_buf;