From mboxrd@z Thu Jan 1 00:00:00 1970 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 83385C44503 for ; Thu, 9 Jul 2026 07:56:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding: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=miRr2Vh2qV0uzgDRTJNRMD3Yv5mTPwM32SzzMgMj50I=; b=1a799uOQ3efuq/tPl/XpDkrK+G muwECoHVf61vG7FwcKx0xV49eA9KA66pgey4AKGQhtpvtKqXs9NJ4GoyIH/ZUxfDtE/qYFt/21McN Hw8/d/WTQz/gQJWTuun4SqL71O2ftf9QIhqxZTIzlF5k/NIY4qv7b5kL/vTvThIXkyQ1GEvwB4tzl wW64Lcxg1LyO/hSNvnUgBlmdOFyUQhcKKAYauUEbojE3sV1b1NIgrjxUVT0lcmoIINAMTpvTmkZPB 6L7otYqHqgJS4ffm6dGCXpMMVHEZ7pkRVrkAv4EpfQuSjFF5QxSMnRs8YuhtVysj2jmkTiMH+eHDC qju8ot4g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1whjcR-00000001Mjd-0vGi; Thu, 09 Jul 2026 07:56:27 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1whjcN-00000001Mgd-0qxn for linux-mediatek@lists.infradead.org; Thu, 09 Jul 2026 07:56:25 +0000 X-UUID: a94959e87b6b11f1acbe4559397dec65-20260709 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=miRr2Vh2qV0uzgDRTJNRMD3Yv5mTPwM32SzzMgMj50I=; b=stHWIHxDZ6hmqVUNy2JgwS0egw2Wu2wPX9XUp7CnfxLC2eE/q4rimHLvvhD+cDALPI2WPfeJ8uaM5LfcmpYQWrX4DZjOj9FtGdufQJynR9EshJMTaBUunESsJ7jxOseSVMVx4c43iiCpzjxso4bQwVTdpUbna/sYTdwGMUBLK38=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.17,REQID:6b8675a7-e6f8-4151-b43a-f86096ebcb63,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:d497b38,CLOUDID:653eee14-ea64-44d4-98db-4e1fb89955a3,B ulkID:nil,BulkQuantity:0,SF:102|836|865|888|898,TC:-5,Content:0|15|50|99,E DM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:-1,COL:0,OSI:0,OSA:0, AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: a94959e87b6b11f1acbe4559397dec65-20260709 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1575973859; Thu, 09 Jul 2026 00:56:15 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by MTKMBS14N1.mediatek.inc (172.21.101.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.29; Thu, 9 Jul 2026 15:56:13 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Thu, 9 Jul 2026 15:56:13 +0800 From: Eason Lai To: , CC: , , , , , , , , , , , , Eason Lai Subject: [PATCH 0/3] Fix TX performance degradation when IOMMU is enabled Date: Thu, 9 Jul 2026 15:55:55 +0800 Message-ID: <20260709075558.1654164-1-eason.lai@mediatek.com> X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260709_005623_255692_DBC9B135 X-CRM114-Status: UNSURE ( 7.54 ) X-CRM114-Notice: Please train this message. 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: Eason Lai This series adds a TX preallocated buffer mechanism to fix the TX performance degradation observed after enabling IOMMU. Currently this feature is only enabled on MT8196, where it has been validated. Eason Lai (3): wifi: mt76: Separate skb and page_pool_buf pointers in mt76_txwi_cache wifi: mt76: mt792x: Add TX page pool support for IOMMU-enabled systems wifi: mt76: mt792x: Restrict TX page pool to MT8196 platform drivers/net/wireless/mediatek/mt76/dma.c | 55 ++- drivers/net/wireless/mediatek/mt76/mt76.h | 15 +- .../wireless/mediatek/mt76/mt76_connac_mac.c | 6 + .../net/wireless/mediatek/mt76/mt7925/pci.c | 4 +- drivers/net/wireless/mediatek/mt76/mt792x.h | 2 + .../net/wireless/mediatek/mt76/mt792x_dma.c | 330 ++++++++++++++++++ .../net/wireless/mediatek/mt76/mt7996/mac.c | 10 +- drivers/net/wireless/mediatek/mt76/tx.c | 2 +- drivers/net/wireless/mediatek/mt76/wed.c | 6 +- 9 files changed, 398 insertions(+), 32 deletions(-) -- 2.45.2