From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 98BD5369224 for ; Wed, 29 Jul 2026 02:34:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=60.244.123.138 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785292487; cv=none; b=SOQ14qJsSpbCFULGt+kdTOE517bm2CV81O/1oHAzH8wqbxEnSu1Dm65ANl4k9eg5NkjfP6MDnITDsqRmhIBkGM0ZVwpPT1bVLB6uJCNIJmlFVxbrGHZVXkp0fo0TL52AAM9iTpj+NVzateqtDvSuiQyVOcbj2H/9yVJfpqD2DRc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785292487; c=relaxed/simple; bh=WkG/oJZD1KcU7poB04laa7mxoxcnVNM0lK7i/xQEE4E=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nN1HdG2GNSg0XGwPqzeCwF8gwmhISZwf897zpNsJwzwCWHAA/pOKOy43c5kiSFFgD6oE0Qgbkjtds/usqTxsPefQQlrsxdKlcdwoV/hqNmeFmgQlTN/eT21G3XkQa+cA64AgLJ80qZyjjvr4gGEZFsejF1GCqv3jL0A/4vUuQ1I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=WuOhQ1q5; arc=none smtp.client-ip=60.244.123.138 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="WuOhQ1q5" X-UUID: 0aec31e08af611f1b1788b6acf885367-20260729 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:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=nyD2ZLyTq5wiEGeeAjWZ6IXuUql2AWbemWMgNg/K29s=; b=WuOhQ1q5eRTNAVVfACdte3xw3F4tgtWoZG47rptcSEiPcCKS2mVMM7IpRZbMbEP5AzISyq9SPIpbwkP5tZ7/yELI3DWbSWGbfdFieiAU4GE4LKSArhqiiMtE0MA8WgYW9FRzli5CF/5QMkSCIwStD8D5UACIhJdn/ijn6pfK3v4=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.18,REQID:ad428a62-84cb-45b4-bd72-2060db15041c,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:8a735a6,CLOUDID:e5dae5e1-71f1-405e-92eb-6802d6af74fd,B ulkID:nil,BulkQuantity:0,SF:81|82|102|836|865|888|898,TC:-5,Content:0|15|5 0|99,EDM:-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: 0aec31e08af611f1b1788b6acf885367-20260729 Received: from mtkmbs09n2.mediatek.inc [(172.21.101.94)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 118028244; Wed, 29 Jul 2026 10:34:37 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.29; Wed, 29 Jul 2026 10:34:36 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Wed, 29 Jul 2026 10:34:36 +0800 From: Eason Lai To: , CC: , , , , , , , , , , Subject: [PATCH v2 0/3] wifi: mt76: Fix TX performance degradation when IOMMU is enabled Date: Wed, 29 Jul 2026 10:34:31 +0800 Message-ID: <20260729023434.1105517-1-eason.lai@mediatek.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260709075558.1654164-1-eason.lai@mediatek.com> References: <20260709075558.1654164-1-eason.lai@mediatek.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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. Changes in v2: - Reword cover letter subject to add wifi: mt76: prefix Eason Lai (3): wifi: mt76: Separate skb and ptr 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 | 28 +- drivers/net/wireless/mediatek/mt76/dma.h | 3 + drivers/net/wireless/mediatek/mt76/mt76.h | 9 +- .../wireless/mediatek/mt76/mt76_connac_mac.c | 6 + .../net/wireless/mediatek/mt76/mt7925/pci.c | 2 + drivers/net/wireless/mediatek/mt76/mt792x.h | 1 + .../net/wireless/mediatek/mt76/mt792x_dma.c | 279 +++++++++++++++++- 7 files changed, 317 insertions(+), 11 deletions(-) -- 2.45.2