From patchwork Mon Nov 4 11:52:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chao hao X-Patchwork-Id: 11225577 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 63CDE16B1 for ; Mon, 4 Nov 2019 11:57:28 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 1F4CF21D7F for ; Mon, 4 Nov 2019 11:57:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="oiK4aZXb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1F4CF21D7F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=VRi2FU/go9iZQBcVMaimFeMp6dQCL5eId4s6fTNVLPI=; b=oiK4aZXbT0C3dK Z8w6wAe/lm235FihpMRteS0zxRG+J9vtSMQsm4XGk93w+jQ6uk0a9RgkCcHIOfbPV/kGURRyNlVGE QL1/Wj8jFNq9T6ytJkxjhU68pEq5rhn9K0TZ1LFz2ckqoGWrzea1YHopfv2yH2bFwengwGpiFsQf/ NcrP1EnET+PQ/Pt/q7ykXVIrvyewuqhD0aRgMdYaqlmISPAwpIHoAPLYfZr47UzSzHt1ztClyA+sZ DI1y0L8RT1mLQKu0ITXBT98lsx3SgtMqOO1M6ikgCGysDdTwmXLCnrPp6EfwRfzHpSWl1Pz7BEx0g xEXIxt+y3tgaCCJLHDQg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iRaz5-0002iD-Tg; Mon, 04 Nov 2019 11:57:23 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iRawE-0007LR-Nh; Mon, 04 Nov 2019 11:54:28 +0000 X-UUID: c53bf9fd509b45f6ac36776f94d15338-20191104 X-UUID: c53bf9fd509b45f6ac36776f94d15338-20191104 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1420934182; Mon, 04 Nov 2019 03:54:27 -0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 4 Nov 2019 03:53:08 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 4 Nov 2019 19:53:08 +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 19:53:05 +0800 From: Chao Hao To: Joerg Roedel , Rob Herring , "Matthias Brugger" Subject: [RESEND, PATCH 10/13] iommu/mediatek: Remove mtk_iommu_get_m4u_data api Date: Mon, 4 Nov 2019 19:52:35 +0800 Message-ID: <20191104115238.2394-11-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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191104_035426_793431_B13CBB99 X-CRM114-Status: GOOD ( 17.32 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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, Yong Wu , Miles Chen , linux-arm-kernel@lists.infradead.org, Guangming Cao Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Based on previous modifications in the patchset, A mtk_iommu_data structure represent a iommu, we will add mtk_iommu_data to mtk_iommu_domain to show the iommu which mtk_iommu_domain belongs to, so we can get mtk_iommu_data by mtk_iommu_domain, don't use to "mtk_iommu_get_m4u_data" any more. Besides, there is a small SW adjustment, we will move alloc iommu_group into "create_iommu_group" Signed-off-by: Chao Hao --- drivers/iommu/mtk_iommu.c | 74 +++++++++++++++++++-------------------- 1 file changed, 37 insertions(+), 37 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 42fad1cf73f3..8c06d2a793a7 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -121,6 +121,7 @@ struct mtk_iommu_domain { u32 id; struct iommu_domain domain; struct iommu_group *group; + struct mtk_iommu_data *data; struct list_head list; }; @@ -168,23 +169,6 @@ static LIST_HEAD(m4ulist); /* List all the M4U HWs */ #define for_each_m4u(data) list_for_each_entry(data, &m4ulist, list) -/* - * There may be 1 or 2 M4U HWs, But we always expect they are in the same domain - * for the performance. - * - * Here always return the mtk_iommu_data of the first probed M4U where the - * iommu domain information is recorded. - */ -static struct mtk_iommu_data *mtk_iommu_get_m4u_data(void) -{ - struct mtk_iommu_data *data; - - for_each_m4u(data) - return data; - - return NULL; -} - static u32 get_domain_id(struct mtk_iommu_data *data, u32 portid) { u32 dom_id = 0; @@ -403,6 +387,27 @@ static void mtk_iommu_config(struct mtk_iommu_data *data, } } +static struct iommu_group *create_iommu_group(struct mtk_iommu_data *data, + struct device *dev) +{ + struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable(); + + /* Prepare for allocate mtk_iommu_domain */ + data->m4u_group = mtk_iommu_get_group(dev); + if (!data->m4u_group) { + data->m4u_group = iommu_group_alloc(); + if (IS_ERR(data->m4u_group)) + dev_err(dev, "Failed to allocate M4U IOMMU group\n"); + } else { + iommu_group_ref_get(data->m4u_group); + } + + /* save the latest init device */ + pgtable->init_dev = dev; + + return data->m4u_group; +} + static struct mtk_iommu_pgtable *create_pgtable(struct mtk_iommu_data *data) { struct mtk_iommu_pgtable *pgtable; @@ -468,7 +473,7 @@ 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_data *data; struct mtk_iommu_domain *dom; struct device *dev; @@ -477,6 +482,7 @@ static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type) if (pgtable) { dev = pgtable->init_dev; + data = dev_iommu_fwspec_get(dev)->iommu_priv; if (!data->m4u_group) { pr_err("%s, find m4u_group failed\n", __func__); return NULL; @@ -497,6 +503,7 @@ static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type) if (dom->id >= data->plat_data->dom_cnt) goto put_dma_cookie; + dom->data = data; dom->group = data->m4u_group; /* Update our support page sizes bitmap */ dom->domain.pgsize_bitmap = pgtable->cfg.pgsize_bitmap; @@ -554,7 +561,8 @@ static int mtk_iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot) { struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable(); - struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); + struct mtk_iommu_domain *dom = to_mtk_domain(domain); + struct mtk_iommu_data *data = dom->data; /* The "4GB mode" M4U physically can not use the lower remap of Dram. */ if (data->enable_4GB) @@ -575,27 +583,30 @@ static size_t mtk_iommu_unmap(struct iommu_domain *domain, static void mtk_iommu_flush_iotlb_all(struct iommu_domain *domain) { - mtk_iommu_tlb_flush_all(mtk_iommu_get_m4u_data()); + struct mtk_iommu_domain *dom = to_mtk_domain(domain); + + mtk_iommu_tlb_flush_all(dom->data); } static void mtk_iommu_iotlb_sync(struct iommu_domain *domain, struct iommu_iotlb_gather *gather) { - struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); + struct mtk_iommu_domain *dom = to_mtk_domain(domain); size_t length = gather->end - gather->start; if (gather->start == ULONG_MAX) return; mtk_iommu_tlb_flush_range_sync(gather->start, length, gather->pgsize, - data); + dom->data); } static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable(); - struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); + struct mtk_iommu_domain *dom = to_mtk_domain(domain); + struct mtk_iommu_data *data = dom->data; phys_addr_t pa; pa = pgtable->iop->iova_to_phys(pgtable->iop, iova); @@ -642,7 +653,7 @@ static void mtk_iommu_remove_device(struct device *dev) static struct iommu_group *mtk_iommu_device_group(struct device *dev) { - struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); + struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv; struct mtk_iommu_pgtable *pgtable; int ret = 0; @@ -658,20 +669,9 @@ 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)) - dev_err(dev, "Failed to allocate M4U IOMMU group\n"); - } else { - iommu_group_ref_get(data->m4u_group); - } + dev_info(data->dev, "%s, init data:%d\n", __func__, data->m4u_id); - /* save the latest init device */ - pgtable->init_dev = dev; - - return data->m4u_group; + return create_iommu_group(data, dev); } static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)