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This will also make it easier to then change of_map_id() to correctly account for specifier cells. Reviewed-by: Rob Herring (Arm) Reviewed-by: Frank Li Acked-by: Marc Zyngier Acked-by: Bjorn Helgaas Signed-off-by: Robin Murphy Signed-off-by: Vijayanand Jitta --- drivers/cdx/cdx_msi.c | 3 +-- drivers/iommu/of_iommu.c | 4 +--- drivers/irqchip/irq-gic-its-msi-parent.c | 2 +- drivers/of/base.c | 38 ++++++++++++++++++++++++++++++++ drivers/of/irq.c | 3 +-- drivers/pci/controller/dwc/pci-imx6.c | 6 ++--- drivers/pci/controller/pcie-apple.c | 3 +-- drivers/xen/grant-dma-ops.c | 3 +-- include/linux/of.h | 18 +++++++++++++++ 9 files changed, 64 insertions(+), 16 deletions(-) diff --git a/drivers/cdx/cdx_msi.c b/drivers/cdx/cdx_msi.c index 91b95422b263..63b3544ec997 100644 --- a/drivers/cdx/cdx_msi.c +++ b/drivers/cdx/cdx_msi.c @@ -128,8 +128,7 @@ static int cdx_msi_prepare(struct irq_domain *msi_domain, int ret; /* Retrieve device ID from requestor ID using parent device */ - ret = of_map_id(parent->of_node, cdx_dev->msi_dev_id, "msi-map", "msi-map-mask", - NULL, &dev_id); + ret = of_map_msi_id(parent->of_node, cdx_dev->msi_dev_id, NULL, &dev_id); if (ret) { dev_err(dev, "of_map_id failed for MSI: %d\n", ret); return ret; diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 6b989a62def2..a511ecf21fcd 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -48,9 +48,7 @@ static int of_iommu_configure_dev_id(struct device_node *master_np, struct of_phandle_args iommu_spec = { .args_count = 1 }; int err; - err = of_map_id(master_np, *id, "iommu-map", - "iommu-map-mask", &iommu_spec.np, - iommu_spec.args); + err = of_map_iommu_id(master_np, *id, &iommu_spec.np, iommu_spec.args); if (err) return err; diff --git a/drivers/irqchip/irq-gic-its-msi-parent.c b/drivers/irqchip/irq-gic-its-msi-parent.c index d36b278ae66c..b63343a227a9 100644 --- a/drivers/irqchip/irq-gic-its-msi-parent.c +++ b/drivers/irqchip/irq-gic-its-msi-parent.c @@ -180,7 +180,7 @@ static int of_pmsi_get_msi_info(struct irq_domain *domain, struct device *dev, u struct device_node *msi_ctrl __free(device_node) = NULL; - return of_map_id(dev->of_node, dev->id, "msi-map", "msi-map-mask", &msi_ctrl, dev_id); + return of_map_msi_id(dev->of_node, dev->id, &msi_ctrl, dev_id); } static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev, diff --git a/drivers/of/base.c b/drivers/of/base.c index 57420806c1a2..ae04487bd614 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -2201,3 +2201,41 @@ int of_map_id(const struct device_node *np, u32 id, return 0; } EXPORT_SYMBOL_GPL(of_map_id); + +/** + * of_map_iommu_id - Translate an ID using "iommu-map" bindings. + * @np: root complex device node. + * @id: Requester ID of the device (e.g. PCI RID/BDF or a platform + * stream/device ID) used as the lookup key in the iommu-map table. + * @target: optional pointer to a target device node. + * @id_out: optional pointer to receive the translated ID. + * + * Convenience wrapper around of_map_id() using "iommu-map" and "iommu-map-mask". + * + * Return: 0 on success or a standard error code on failure. + */ +int of_map_iommu_id(const struct device_node *np, u32 id, + struct device_node **target, u32 *id_out) +{ + return of_map_id(np, id, "iommu-map", "iommu-map-mask", target, id_out); +} +EXPORT_SYMBOL_GPL(of_map_iommu_id); + +/** + * of_map_msi_id - Translate an ID using "msi-map" bindings. + * @np: root complex device node. + * @id: Requester ID of the device (e.g. PCI RID/BDF or a platform + * stream/device ID) used as the lookup key in the msi-map table. + * @target: optional pointer to a target device node. + * @id_out: optional pointer to receive the translated ID. + * + * Convenience wrapper around of_map_id() using "msi-map" and "msi-map-mask". + * + * Return: 0 on success or a standard error code on failure. + */ +int of_map_msi_id(const struct device_node *np, u32 id, + struct device_node **target, u32 *id_out) +{ + return of_map_id(np, id, "msi-map", "msi-map-mask", target, id_out); +} +EXPORT_SYMBOL_GPL(of_map_msi_id); diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 6367c67732d2..e37c1b3f8736 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -817,8 +817,7 @@ u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in) * "msi-map" or an "msi-parent" property. */ for (parent_dev = dev; parent_dev; parent_dev = parent_dev->parent) { - if (!of_map_id(parent_dev->of_node, id_in, "msi-map", - "msi-map-mask", msi_np, &id_out)) + if (!of_map_msi_id(parent_dev->of_node, id_in, msi_np, &id_out)) break; if (!of_check_msi_parent(parent_dev->of_node, msi_np)) break; diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index a5b8d0b71677..bff8289f804a 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -1144,8 +1144,7 @@ static int imx_pcie_add_lut_by_rid(struct imx_pcie *imx_pcie, u32 rid) u32 sid = 0; target = NULL; - err_i = of_map_id(dev->of_node, rid, "iommu-map", "iommu-map-mask", - &target, &sid_i); + err_i = of_map_iommu_id(dev->of_node, rid, &target, &sid_i); if (target) { of_node_put(target); } else { @@ -1158,8 +1157,7 @@ static int imx_pcie_add_lut_by_rid(struct imx_pcie *imx_pcie, u32 rid) } target = NULL; - err_m = of_map_id(dev->of_node, rid, "msi-map", "msi-map-mask", - &target, &sid_m); + err_m = of_map_msi_id(dev->of_node, rid, &target, &sid_m); /* * err_m target diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c index 2d92fc79f6dd..a0937b7b3c4d 100644 --- a/drivers/pci/controller/pcie-apple.c +++ b/drivers/pci/controller/pcie-apple.c @@ -764,8 +764,7 @@ static int apple_pcie_enable_device(struct pci_host_bridge *bridge, struct pci_d dev_dbg(&pdev->dev, "added to bus %s, index %d\n", pci_name(pdev->bus->self), port->idx); - err = of_map_id(port->pcie->dev->of_node, rid, "iommu-map", - "iommu-map-mask", NULL, &sid); + err = of_map_iommu_id(port->pcie->dev->of_node, rid, NULL, &sid); if (err) return err; diff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c index c2603e700178..1b7696b2d762 100644 --- a/drivers/xen/grant-dma-ops.c +++ b/drivers/xen/grant-dma-ops.c @@ -325,8 +325,7 @@ static int xen_dt_grant_init_backend_domid(struct device *dev, struct pci_dev *pdev = to_pci_dev(dev); u32 rid = PCI_DEVID(pdev->bus->number, pdev->devfn); - if (of_map_id(np, rid, "iommu-map", "iommu-map-mask", &iommu_spec.np, - iommu_spec.args)) { + if (of_map_iommu_id(np, rid, &iommu_spec.np, iommu_spec.args)) { dev_dbg(dev, "Cannot translate ID\n"); return -ESRCH; } diff --git a/include/linux/of.h b/include/linux/of.h index be6ec4916adf..fe841f3cc747 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -465,6 +465,12 @@ int of_map_id(const struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out); +int of_map_iommu_id(const struct device_node *np, u32 id, + struct device_node **target, u32 *id_out); + +int of_map_msi_id(const struct device_node *np, u32 id, + struct device_node **target, u32 *id_out); + phys_addr_t of_dma_get_max_cpu_address(struct device_node *np); struct kimage; @@ -934,6 +940,18 @@ static inline int of_map_id(const struct device_node *np, u32 id, return -EINVAL; } +static inline int of_map_iommu_id(const struct device_node *np, u32 id, + struct device_node **target, u32 *id_out) +{ + return -EINVAL; +} + +static inline int of_map_msi_id(const struct device_node *np, u32 id, + struct device_node **target, u32 *id_out) +{ + return -EINVAL; +} + static inline phys_addr_t of_dma_get_max_cpu_address(struct device_node *np) { return PHYS_ADDR_MAX; -- 2.34.1