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Sun, 05 Jan 2020 02:56:31 -0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 5 Jan 2020 02:47:44 -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; Sun, 5 Jan 2020 18:46:49 +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; Sun, 5 Jan 2020 18:45:45 +0800 From: Chao Hao To: Joerg Roedel , Rob Herring , "Matthias Brugger" Subject: [PATCH v2 16/19] iommu/mediatek: Remove mtk_iommu_get_m4u_data api Date: Sun, 5 Jan 2020 18:45:20 +0800 Message-ID: <20200105104523.31006-17-chao.hao@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200105104523.31006-1-chao.hao@mediatek.com> References: <20200105104523.31006-1-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-20200105_025634_807561_82CD8828 X-CRM114-Status: GOOD ( 17.09 ) X-BeenThere: linux-mediatek@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, 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 , Cui Zhang , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.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 bfb1831afae9..9a7f2a388e3e 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -115,6 +115,7 @@ struct mtk_iommu_domain { u32 id; struct iommu_domain domain; struct iommu_group *group; + struct mtk_iommu_data *data; struct list_head list; }; @@ -162,23 +163,6 @@ 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; @@ -397,6 +381,27 @@ 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; @@ -462,7 +467,7 @@ 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; @@ -471,6 +476,7 @@ 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; @@ -491,6 +497,7 @@ 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; @@ -548,7 +555,8 @@ static int mtk_iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot, gfp_t gfp) { 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) @@ -569,27 +577,30 @@ 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); @@ -636,7 +647,7 @@ 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; @@ -652,20 +663,9 @@ 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) -- 2.18.0 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek