From patchwork Tue Mar 7 02:34:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WW9uZyBXdSAo5ZC05YuHKQ==?= X-Patchwork-Id: 13162637 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 81895C64EC4 for ; Tue, 7 Mar 2023 02:38:06 +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:References:In-Reply-To: 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: List-Owner; bh=zD3iWdbz7yVlKYOHGEvm6d3jFOpM19itIh677IyO98Y=; b=jQatXk0MBOEJoR JCo2IJUcSI772An9h7La3A0XDHZ0AAd8GHR7T2J7Txpfi4nnflA+cAqeuFlUsrZ3cnOA5KXextaSP eNZOcFo9jdlq/1y1M51vLEpD2wm72QuSQQTFIglD7TYmM2bVnf/dIo43VTnQM/wAUHjIOn2yjz7Dz VCVF1OjDd4ltGQtnuwtmQGUimdNHHCFguenLo/fQaGpWFDBlPMAk44ZomzMecRpSdgUtxMeTV3rZW jAWNm0cOutZKmYtmyEVE24jwHO3DlN+GSITVvCslea36dFq6WNcjku2HE6C3DnsH/DAj3LketgAnp sD19KkxV4L41j5xsztlg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZNC1-00FtHX-DZ; Tue, 07 Mar 2023 02:36:45 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZNBc-00Ft7I-NO; Tue, 07 Mar 2023 02:36:32 +0000 X-UUID: d631d3e2bc9011eda08d4d6090ec5a5c-20230306 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=XNsNsqm+tac4TqBDM7eY2YSHOJMel3hNuiOtLlMEMKY=; b=eF94pGKlpfUnCLQ0/hcIM69hmO5NHdYiHRndX6QtivTxoONDa0WqC4xcxphRuJ4zXx/aPAMgpNpe032tuNQcXjqBEPdnGCWQ9cP1grSrY+G9f2XCt+s7RTlwx/NZCW/Yygf6lTJ1VLMbJGIFE7xqMDEZiuW7F9BxrLhZjVP9bU0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.20,REQID:4f857e70-aa5a-4c74-8053-ace2fcd0fc35,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:25b5999,CLOUDID:557969b2-beed-4dfc-bd9c-e1b22fa6ccc4,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-UUID: d631d3e2bc9011eda08d4d6090ec5a5c-20230306 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 2135533493; Mon, 06 Mar 2023 19:36:17 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Tue, 7 Mar 2023 10:36:14 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Tue, 7 Mar 2023 10:36:13 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Mauro Carvalho Chehab , Rob Herring CC: Will Deacon , Robin Murphy , Krzysztof Kozlowski , Hans Verkuil , , , , , , , , AngeloGioacchino Del Regno , , , , Yunfei Dong , kyrie wu , , , , Yong Wu Subject: [PATCH v5 03/11] iommu/mediatek: Improve comment for the current region/bank Date: Tue, 7 Mar 2023 10:34:59 +0800 Message-ID: <20230307023507.13306-4-yong.wu@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230307023507.13306-1-yong.wu@mediatek.com> References: <20230307023507.13306-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230306_183630_905445_9697D51F X-CRM114-Status: GOOD ( 15.30 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org No functional change. Just add more comment about the current region/bank in the code. Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno --- drivers/iommu/mtk_iommu.c | 31 ++++++++++++++++++++++++++----- 1 file changed, 26 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d5a4955910ff..aa4bdcb65ea7 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -197,12 +197,33 @@ struct mtk_iommu_plat_data { char *pericfg_comp_str; struct list_head *hw_list; - unsigned int iova_region_nr; - const struct mtk_iommu_iova_region *iova_region; - u8 banks_num; - bool banks_enable[MTK_IOMMU_BANK_MAX]; - unsigned int banks_portmsk[MTK_IOMMU_BANK_MAX]; + /* + * The IOMMU HW may support 16GB iova. In order to balance the IOVA ranges, + * different masters will be put in different iova ranges, for example vcodec + * is in 4G-8G and cam is in 8G-12G. Meanwhile, some masters may have the + * special IOVA range requirement, like CCU can only support the address + * 0x40000000-0x44000000. + * Here list the iova ranges this SoC supports and which larbs/ports are in + * which region. + * + * 16GB iova all use one pgtable, but each a region is a iommu group. + */ + struct { + unsigned int iova_region_nr; + const struct mtk_iommu_iova_region *iova_region; + }; + + /* + * The IOMMU HW may have 5 banks. Each bank has a independent pgtable. + * Here list how many banks this SoC supports/enables and which ports are in which bank. + */ + struct { + u8 banks_num; + bool banks_enable[MTK_IOMMU_BANK_MAX]; + unsigned int banks_portmsk[MTK_IOMMU_BANK_MAX]; + }; + unsigned char larbid_remap[MTK_LARB_COM_MAX][MTK_LARB_SUBCOM_MAX]; };