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 X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1FC0DCA9EB5 for ; Mon, 4 Nov 2019 11:53:12 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 00B4021E6F for ; Mon, 4 Nov 2019 11:53:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 00B4021E6F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 548F6F19; Mon, 4 Nov 2019 11:53:03 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id E82F4F16 for ; Mon, 4 Nov 2019 11:53:01 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 22B39710 for ; Mon, 4 Nov 2019 11:53:00 +0000 (UTC) X-UUID: 42a4009e2207450cbb59ebf4ff4dbb3e-20191104 X-UUID: 42a4009e2207450cbb59ebf4ff4dbb3e-20191104 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1206833269; Mon, 04 Nov 2019 19:52:57 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs06n1.mediatek.inc (172.21.101.129) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 4 Nov 2019 19:52:55 +0800 Received: from localhost.localdomain (10.15.20.246) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 4 Nov 2019 19:52:51 +0800 From: Chao Hao To: Joerg Roedel , Rob Herring , Matthias Brugger Subject: [RESEND,PATCH 06/13] iommu/mediatek: Change get the way of m4u_group Date: Mon, 4 Nov 2019 19:52:31 +0800 Message-ID: <20191104115238.2394-7-chao.hao@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20191104115238.2394-1-chao.hao@mediatek.com> References: <20191104115238.2394-1-chao.hao@mediatek.com> MIME-Version: 1.0 X-MTK: N Cc: Anan Sun , devicetree@vger.kernel.org, Cui Zhang , Jun Yan , wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, Chao Hao , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, Miles Chen , linux-arm-kernel@lists.infradead.org, Guangming Cao X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org 1. Redefine mtk_iommu_domain structure, it will include iommu_group and iommu_domain. Different mtk_iommu_domains can be distinguished by ID. When we realize multiple mtk_iommu_domains, every mtk_iommu_domain can describe one iova region. 2. In theory, every device has one iommu_group, so this patch will get iommu_group by checking device. All the devices belong to the same m4u_group currently, so they also use the same mtk_iommu_domain(id=0). Signed-off-by: Chao Hao --- drivers/iommu/mtk_iommu.c | 46 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index f264fa8c16a0..27995b2b29a6 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -117,12 +117,16 @@ #define MTK_M4U_TO_PORT(id) ((id) & 0x1f) struct mtk_iommu_domain { + u32 id; struct iommu_domain domain; + struct iommu_group *group; + struct list_head list; }; struct mtk_iommu_pgtable { struct io_pgtable_cfg cfg; struct io_pgtable_ops *iop; + struct list_head m4u_dom_v2; }; static struct mtk_iommu_pgtable *share_pgtable; @@ -173,6 +177,41 @@ static struct mtk_iommu_data *mtk_iommu_get_m4u_data(void) return NULL; } +static u32 get_domain_id(void) +{ + /* only support one mtk_iommu_domain currently */ + return 0; +} + +static u32 mtk_iommu_get_domain_id(void) +{ + return get_domain_id(); +} + +static struct mtk_iommu_domain *get_mtk_domain(struct device *dev) +{ + struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv; + struct mtk_iommu_domain *dom; + u32 domain_id = mtk_iommu_get_domain_id(); + + list_for_each_entry(dom, &data->pgtable->m4u_dom_v2, list) { + if (dom->id == domain_id) + return dom; + } + return NULL; +} + +static struct iommu_group *mtk_iommu_get_group(struct device *dev) +{ + struct mtk_iommu_domain *dom; + + dom = get_mtk_domain(dev); + if (dom) + return dom->group; + + return NULL; +} + static struct mtk_iommu_pgtable *mtk_iommu_get_pgtable(void) { return share_pgtable; @@ -334,6 +373,8 @@ static struct mtk_iommu_pgtable *create_pgtable(struct mtk_iommu_data *data) if (!pgtable) return ERR_PTR(-ENOMEM); + INIT_LIST_HEAD(&pgtable->m4u_dom_v2); + pgtable->cfg = (struct io_pgtable_cfg) { .quirks = IO_PGTABLE_QUIRK_ARM_NS | IO_PGTABLE_QUIRK_NO_PERMS | @@ -388,6 +429,7 @@ static int mtk_iommu_attach_pgtable(struct mtk_iommu_data *data, static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type) { struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable(); + struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); struct mtk_iommu_domain *dom; if (type != IOMMU_DOMAIN_DMA) @@ -405,12 +447,15 @@ static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type) if (iommu_get_dma_cookie(&dom->domain)) goto free_dom; + dom->group = data->m4u_group; + dom->id = mtk_iommu_get_domain_id(); /* Update our support page sizes bitmap */ dom->domain.pgsize_bitmap = pgtable->cfg.pgsize_bitmap; dom->domain.geometry.aperture_start = 0; dom->domain.geometry.aperture_end = DMA_BIT_MASK(32); dom->domain.geometry.force_aperture = true; + list_add_tail(&dom->list, &pgtable->m4u_dom_v2); return &dom->domain; @@ -566,6 +611,7 @@ static struct iommu_group *mtk_iommu_device_group(struct device *dev) } /* All the client devices are in the same m4u iommu-group */ + data->m4u_group = mtk_iommu_get_group(dev); if (!data->m4u_group) { data->m4u_group = iommu_group_alloc(); if (IS_ERR(data->m4u_group)) -- 2.18.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu