From patchwork Fri Jan 14 23:56:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12714238 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8054BC433EF for ; Fri, 14 Jan 2022 23:57:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=+YRTSYhalSmea3jmzeBHcXc1I4dfqO4Ff3O4OnK6Hqc=; b=Q3AxY+CwStZATI TpF2+BsFyKx72xG8A7qQW6TqDW76WTtlkF5duZU81jBxNyVx7CHtkzM3EM/WdMUy/dHcnip9JdyHs B5KiziIwWSFQHK8Bi8DLO8B5nqzSowrefBXP6Zh1qIQz276UPyY7bklkdCh0y1MZE4vkZgJ9Jgl1C RoLLAUWCiobMKY+vFG5ph8IFk/YQUq4bVy+g703HJWZqdVtakZ3RE5y6XqltKieMRBxDidnxIR0Qp +XmlomLjg1f6F7hWfvLYoeKWVqtsNUWIIJ6hQUCUHFTmTvzTRRgfOY3HqY9/jGkIkD9WEpTOTlSUH QCx7WnjOCakb6QJJ8/Tw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8WRH-00ATRx-4f; Fri, 14 Jan 2022 23:56:59 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8WRE-00ATQm-Et for linux-mediatek@lists.infradead.org; Fri, 14 Jan 2022 23:56:58 +0000 X-UUID: 5ec0273c56594d789c6361b373a52029-20220114 X-UUID: 5ec0273c56594d789c6361b373a52029-20220114 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1355836571; Fri, 14 Jan 2022 16:56:50 -0700 Received: from mtkexhb01.mediatek.inc (172.21.101.102) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 14 Jan 2022 15:56:48 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkexhb01.mediatek.inc (172.21.101.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 15 Jan 2022 07:56:34 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 15 Jan 2022 07:56:34 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , "Deren Wu" Subject: [PATCH v2 1/2] mt76: sdio: honor the largest Tx buffer the hardware can support Date: Sat, 15 Jan 2022 07:56:32 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220114_155656_535917_25327B7E X-CRM114-Status: GOOD ( 21.40 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Sean Wang We don't have to create a separate sdio.xmit_buf buffer for each queue. Instead, we just need to create one, reuse it across all queues to reduce memory consumption further. And then we should take it into account the actual the host and the device MMC capability to determine what the appropriate xmit_buf_size can be. Both MT7921S and MT7663 can support up to Tx FIFO size of 0x3fe00 which means the device can receive 511 blocks of block size 512 in a row from the host. So if the driver aggregates the frames as many as possible the the device can support, we can merge multiple MMC requests into a single one to get rid of the overhead of the handling and synchronizing in those unnecessary MMC requests and reduce the SDIO lock contention with the Bluetooth concurrent traffic and finally to have the higher bus utilization with less idle cycle. With the patch, it is helpful for WiFi to have steady throughput performance especially while running Bluetooth concurrently. Co-developed-by: Deren Wu Signed-off-by: Deren Wu Signed-off-by: Sean Wang Acked-by: Lorenzo Bianconi --- v1 -> v2: 1. move buffer allocation in mt76s_init() and remove duplicated code in mt7663/mt7921. 2. move mt76s_get_xmit_buf_sz into mt76s_init() 3. merge 2/3 and 3/3 in v1 --- drivers/net/wireless/mediatek/mt76/mt76.h | 5 +++-- .../net/wireless/mediatek/mt76/mt7615/sdio.c | 12 +----------- .../net/wireless/mediatek/mt76/mt7921/sdio.c | 12 +----------- drivers/net/wireless/mediatek/mt76/sdio.c | 14 +++++++++++++- drivers/net/wireless/mediatek/mt76/sdio_txrx.c | 17 +++++++---------- 5 files changed, 25 insertions(+), 35 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 14f60fcb6a34..43abf0679876 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -497,7 +497,7 @@ struct mt76_usb { } mcu; }; -#define MT76S_XMIT_BUF_SZ (16 * PAGE_SIZE) +#define MT76S_XMIT_BUF_SZ 0x3fe00 #define MT76S_NUM_TX_ENTRIES 256 #define MT76S_NUM_RX_ENTRIES 512 struct mt76_sdio { @@ -507,7 +507,8 @@ struct mt76_sdio { struct work_struct stat_work; - u8 *xmit_buf[IEEE80211_NUM_ACS + 2]; + u8 *xmit_buf; + u32 xmit_buf_sz; struct sdio_func *func; void *intr_data; diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c index 71162befdae8..49ab3a1f3b9b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c @@ -101,7 +101,7 @@ static int mt7663s_probe(struct sdio_func *func, struct ieee80211_ops *ops; struct mt7615_dev *dev; struct mt76_dev *mdev; - int i, ret; + int ret; ops = devm_kmemdup(&func->dev, &mt7615_ops, sizeof(mt7615_ops), GFP_KERNEL); @@ -140,16 +140,6 @@ static int mt7663s_probe(struct sdio_func *func, goto error; } - for (i = 0; i < ARRAY_SIZE(mdev->sdio.xmit_buf); i++) { - mdev->sdio.xmit_buf[i] = devm_kmalloc(mdev->dev, - MT76S_XMIT_BUF_SZ, - GFP_KERNEL); - if (!mdev->sdio.xmit_buf[i]) { - ret = -ENOMEM; - goto error; - } - } - ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); if (ret) goto error; diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c index 743b63f66efa..a6ae29c97e0e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c @@ -121,7 +121,7 @@ static int mt7921s_probe(struct sdio_func *func, struct mt7921_dev *dev; struct mt76_dev *mdev; - int ret, i; + int ret; mdev = mt76_alloc_device(&func->dev, sizeof(*dev), &mt7921_ops, &drv_ops); @@ -154,16 +154,6 @@ static int mt7921s_probe(struct sdio_func *func, goto error; } - for (i = 0; i < ARRAY_SIZE(mdev->sdio.xmit_buf); i++) { - mdev->sdio.xmit_buf[i] = devm_kmalloc(mdev->dev, - MT76S_XMIT_BUF_SZ, - GFP_KERNEL); - if (!mdev->sdio.xmit_buf[i]) { - ret = -ENOMEM; - goto error; - } - } - ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); if (ret) goto error; diff --git a/drivers/net/wireless/mediatek/mt76/sdio.c b/drivers/net/wireless/mediatek/mt76/sdio.c index 54f72d215948..def7f325f5c5 100644 --- a/drivers/net/wireless/mediatek/mt76/sdio.c +++ b/drivers/net/wireless/mediatek/mt76/sdio.c @@ -12,6 +12,8 @@ #include #include #include +#include +#include #include #include @@ -627,6 +629,7 @@ int mt76s_init(struct mt76_dev *dev, struct sdio_func *func, const struct mt76_bus_ops *bus_ops) { struct mt76_sdio *sdio = &dev->sdio; + u32 host_max_cap; int err; err = mt76_worker_setup(dev->hw, &sdio->status_worker, @@ -648,7 +651,16 @@ int mt76s_init(struct mt76_dev *dev, struct sdio_func *func, dev->bus = bus_ops; dev->sdio.func = func; - return 0; + host_max_cap = min_t(u32, func->card->host->max_req_size, + func->cur_blksize * + func->card->host->max_blk_count); + dev->sdio.xmit_buf_sz = min_t(u32, host_max_cap, MT76S_XMIT_BUF_SZ); + dev->sdio.xmit_buf = devm_kmalloc(dev->dev, dev->sdio.xmit_buf_sz, + GFP_KERNEL); + if (!dev->sdio.xmit_buf) + err = -ENOMEM; + + return err; } EXPORT_SYMBOL_GPL(mt76s_init); diff --git a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c index 488ad7734d85..9fcf507e09bd 100644 --- a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c +++ b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c @@ -229,12 +229,11 @@ static int __mt76s_xmit_queue(struct mt76_dev *dev, u8 *data, int len) static int mt76s_tx_run_queue(struct mt76_dev *dev, struct mt76_queue *q) { - int qid, err, nframes = 0, len = 0, pse_sz = 0, ple_sz = 0; + int err, nframes = 0, len = 0, pse_sz = 0, ple_sz = 0; bool mcu = q == dev->q_mcu[MT_MCUQ_WM]; struct mt76_sdio *sdio = &dev->sdio; u8 pad; - qid = mcu ? ARRAY_SIZE(sdio->xmit_buf) - 1 : q->qid; while (q->first != q->head) { struct mt76_queue_entry *e = &q->entry[q->first]; struct sk_buff *iter; @@ -255,27 +254,25 @@ static int mt76s_tx_run_queue(struct mt76_dev *dev, struct mt76_queue *q) } pad = roundup(e->skb->len, 4) - e->skb->len; - if (len + e->skb->len + pad + 4 > MT76S_XMIT_BUF_SZ) + if (len + e->skb->len + pad + 4 > dev->sdio.xmit_buf_sz) break; if (mt76s_tx_pick_quota(sdio, mcu, e->buf_sz, &pse_sz, &ple_sz)) break; - memcpy(sdio->xmit_buf[qid] + len, e->skb->data, - skb_headlen(e->skb)); + memcpy(sdio->xmit_buf + len, e->skb->data, skb_headlen(e->skb)); len += skb_headlen(e->skb); nframes++; skb_walk_frags(e->skb, iter) { - memcpy(sdio->xmit_buf[qid] + len, iter->data, - iter->len); + memcpy(sdio->xmit_buf + len, iter->data, iter->len); len += iter->len; nframes++; } if (unlikely(pad)) { - memset(sdio->xmit_buf[qid] + len, 0, pad); + memset(sdio->xmit_buf + len, 0, pad); len += pad; } next: @@ -284,8 +281,8 @@ static int mt76s_tx_run_queue(struct mt76_dev *dev, struct mt76_queue *q) } if (nframes) { - memset(sdio->xmit_buf[qid] + len, 0, 4); - err = __mt76s_xmit_queue(dev, sdio->xmit_buf[qid], len + 4); + memset(sdio->xmit_buf + len, 0, 4); + err = __mt76s_xmit_queue(dev, sdio->xmit_buf, len + 4); if (err) return err; }