From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nipun Gupta Subject: [PATCH 3/7 v5] iommu: support iommu configuration for fsl-mc devices Date: Sun, 20 May 2018 19:19:47 +0530 Message-ID: <1526824191-7000-4-git-send-email-nipun.gupta@nxp.com> References: <1526824191-7000-1-git-send-email-nipun.gupta@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1526824191-7000-1-git-send-email-nipun.gupta@nxp.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: robin.murphy@arm.com, will.deacon@arm.com, robh+dt@kernel.org, robh@kernel.org, mark.rutland@arm.com, catalin.marinas@arm.com, gregkh@linuxfoundation.org, laurentiu.tudor@nxp.com, bhelgaas@google.com Cc: devicetree@vger.kernel.org, stuyoder@gmail.com, bharat.bhushan@nxp.com, shawnguo@kernel.org, joro@8bytes.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, leoyang.li@nxp.com, iommu@lists.linux-foundation.org, Nipun Gupta , linux-pci@vger.kernel.org, frowand.list@gmail.com, hch@lst.de, linux-arm-kernel@lists.infradead.org, m.szyprowski@samsung.com List-Id: devicetree@vger.kernel.org With of_pci_map_rid available for all the busses, use the function for configuration of devices on fsl-mc bus Signed-off-by: Nipun Gupta --- drivers/iommu/of_iommu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 811e160..284474d 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -24,6 +24,7 @@ #include #include #include +#include #define NO_IOMMU 1 @@ -159,6 +160,23 @@ static int of_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) return err; } +static int of_fsl_mc_iommu_init(struct fsl_mc_device *mc_dev, + struct device_node *master_np) +{ + struct of_phandle_args iommu_spec = { .args_count = 1 }; + int err; + + err = of_map_rid(master_np, mc_dev->icid, "iommu-map", + "iommu-map-mask", &iommu_spec.np, + iommu_spec.args); + if (err) + return err == -ENODEV ? NO_IOMMU : err; + + err = of_iommu_xlate(&mc_dev->dev, &iommu_spec); + of_node_put(iommu_spec.np); + return err; +} + const struct iommu_ops *of_iommu_configure(struct device *dev, struct device_node *master_np) { @@ -190,6 +208,8 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, err = pci_for_each_dma_alias(to_pci_dev(dev), of_pci_iommu_init, &info); + } else if (dev_is_fsl_mc(dev)) { + err = of_fsl_mc_iommu_init(to_fsl_mc_device(dev), master_np); } else { struct of_phandle_args iommu_spec; int idx = 0; -- 1.9.1