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Update all callers accordingly. Subsequent patch will make use of the args_count field in struct of_phandle_args. Suggested-by: Rob Herring (Arm) Signed-off-by: Charan Teja Kalla Signed-off-by: Vijayanand Jitta --- drivers/cdx/cdx_msi.c | 5 ++- drivers/iommu/of_iommu.c | 2 +- drivers/irqchip/irq-gic-its-msi-parent.c | 11 ++++-- drivers/of/base.c | 63 ++++++++++++++++------------= ---- drivers/of/irq.c | 8 +++- drivers/pci/controller/dwc/pci-imx6.c | 16 ++++++-- drivers/pci/controller/pcie-apple.c | 5 ++- drivers/xen/grant-dma-ops.c | 4 +- include/linux/of.h | 12 +++--- 9 files changed, 76 insertions(+), 50 deletions(-) diff --git a/drivers/cdx/cdx_msi.c b/drivers/cdx/cdx_msi.c index 63b3544ec997..03232b5ffbca 100644 --- a/drivers/cdx/cdx_msi.c +++ b/drivers/cdx/cdx_msi.c @@ -121,6 +121,7 @@ static int cdx_msi_prepare(struct irq_domain *msi_domai= n, struct device *dev, int nvec, msi_alloc_info_t *info) { + struct of_phandle_args msi_spec =3D { .np =3D NULL }; struct cdx_device *cdx_dev =3D to_cdx_device(dev); struct device *parent =3D cdx_dev->cdx->dev; struct msi_domain_info *msi_info; @@ -128,11 +129,13 @@ static int cdx_msi_prepare(struct irq_domain *msi_dom= ain, int ret; =20 /* Retrieve device ID from requestor ID using parent device */ - ret =3D of_map_msi_id(parent->of_node, cdx_dev->msi_dev_id, NULL, &dev_id= ); + ret =3D of_map_msi_id(parent->of_node, cdx_dev->msi_dev_id, &msi_spec); if (ret) { dev_err(dev, "of_map_id failed for MSI: %d\n", ret); return ret; } + of_node_put(msi_spec.np); + dev_id =3D msi_spec.args[0]; =20 #ifdef GENERIC_MSI_DOMAIN_OPS /* Set the device Id to be passed to the GIC-ITS */ diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index a511ecf21fcd..d255d0f58e8c 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -48,7 +48,7 @@ static int of_iommu_configure_dev_id(struct device_node *= master_np, struct of_phandle_args iommu_spec =3D { .args_count =3D 1 }; int err; =20 - err =3D of_map_iommu_id(master_np, *id, &iommu_spec.np, iommu_spec.args); + err =3D of_map_iommu_id(master_np, *id, &iommu_spec); if (err) return err; =20 diff --git a/drivers/irqchip/irq-gic-its-msi-parent.c b/drivers/irqchip/irq= -gic-its-msi-parent.c index b63343a227a9..729fa2f9f758 100644 --- a/drivers/irqchip/irq-gic-its-msi-parent.c +++ b/drivers/irqchip/irq-gic-its-msi-parent.c @@ -152,6 +152,8 @@ static int its_v5_pci_msi_prepare(struct irq_domain *do= main, struct device *dev, static int of_pmsi_get_msi_info(struct irq_domain *domain, struct device *= dev, u32 *dev_id, phys_addr_t *pa) { + struct device_node *msi_ctrl __free(device_node) =3D NULL; + struct of_phandle_args msi_spec =3D { .np =3D NULL }; struct of_phandle_iterator it; int ret; =20 @@ -178,9 +180,12 @@ static int of_pmsi_get_msi_info(struct irq_domain *dom= ain, struct device *dev, u } } =20 - struct device_node *msi_ctrl __free(device_node) =3D NULL; - - return of_map_msi_id(dev->of_node, dev->id, &msi_ctrl, dev_id); + ret =3D of_map_msi_id(dev->of_node, dev->id, &msi_spec); + if (!ret) { + msi_ctrl =3D msi_spec.np; + *dev_id =3D msi_spec.args[0]; + } + return ret; } =20 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 959305a84748..b6e07c5fe715 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -2102,36 +2102,37 @@ int of_find_last_cache_level(unsigned int cpu) * @id: device ID to map. * @map_name: property name of the map to use. * @map_mask_name: optional property name of the mask to use. - * @target: optional pointer to a target device node. - * @id_out: optional pointer to receive the translated ID. + * @arg: pointer to a &struct of_phandle_args. On input, @arg->np may be + * set to a target device node to match, or NULL to match any. On + * success, @arg->np will be set to the matched target node (with a + * reference held) and @arg->args[0] will contain the translated ID. * * Given a device ID, look up the appropriate implementation-defined * platform ID and/or the target device which receives transactions on that - * ID, as per the "iommu-map" and "msi-map" bindings. Either of @target or - * @id_out may be NULL if only the other is required. If @target points to - * a non-NULL device node pointer, only entries targeting that node will be - * matched; if it points to a NULL value, it will receive the device node = of - * the first matching target phandle, with a reference held. + * ID, as per the "iommu-map" and "msi-map" bindings. If @arg->np points to + * a non-NULL device node, only entries targeting that node will be matche= d; + * if it is NULL, it will receive the device node of the first matching + * target phandle, with a reference held. * * Return: 0 on success or a standard error code on failure. */ 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) + struct of_phandle_args *arg) { u32 map_mask, masked_id; int map_len; const __be32 *map =3D NULL; =20 - if (!np || !map_name || (!target && !id_out)) + if (!np || !map_name || !arg) return -EINVAL; =20 map =3D of_get_property(np, map_name, &map_len); if (!map) { - if (target) + if (arg->np) return -ENODEV; /* Otherwise, no map implies no translation */ - *id_out =3D id; + arg->args[0] =3D id; return 0; } =20 @@ -2173,18 +2174,15 @@ int of_map_id(const struct device_node *np, u32 id, if (!phandle_node) return -ENODEV; =20 - if (target) { - if (*target) - of_node_put(phandle_node); - else - *target =3D phandle_node; + if (arg->np) + of_node_put(phandle_node); + else + arg->np =3D phandle_node; =20 - if (*target !=3D phandle_node) - continue; - } + if (arg->np !=3D phandle_node) + continue; =20 - if (id_out) - *id_out =3D masked_id - id_base + out_base; + arg->args[0] =3D masked_id - id_base + out_base; =20 pr_debug("%pOF: %s, using mask %08x, id-base: %08x, out-base: %08x, leng= th: %08x, id: %08x -> %08x\n", np, map_name, map_mask, id_base, out_base, @@ -2193,11 +2191,10 @@ int of_map_id(const struct device_node *np, u32 id, } =20 pr_info("%pOF: no %s translation for id 0x%x on %pOF\n", np, map_name, - id, target && *target ? *target : NULL); + id, arg->np); =20 /* Bypasses translation */ - if (id_out) - *id_out =3D id; + arg->args[0] =3D id; return 0; } EXPORT_SYMBOL_GPL(of_map_id); @@ -2206,17 +2203,18 @@ EXPORT_SYMBOL_GPL(of_map_id); * of_map_iommu_id - Translate an ID using "iommu-map" bindings. * @np: root complex device node. * @id: device ID to map. - * @target: optional pointer to a target device node. - * @id_out: optional pointer to receive the translated ID. + * @arg: pointer to a &struct of_phandle_args for the result. On success, + * @arg->np holds a reference to the target node that the caller must + * release with of_node_put(). * * 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) + struct of_phandle_args *arg) { - return of_map_id(np, id, "iommu-map", "iommu-map-mask", target, id_out); + return of_map_id(np, id, "iommu-map", "iommu-map-mask", arg); } EXPORT_SYMBOL_GPL(of_map_iommu_id); =20 @@ -2224,16 +2222,17 @@ EXPORT_SYMBOL_GPL(of_map_iommu_id); * of_map_msi_id - Translate an ID using "msi-map" bindings. * @np: root complex device node. * @id: device ID to map. - * @target: optional pointer to a target device node. - * @id_out: optional pointer to receive the translated ID. + * @arg: pointer to a &struct of_phandle_args for the result. On success, + * @arg->np holds a reference to the target node that the caller must + * release with of_node_put(). * * Convenience wrapper around of_map_id() using "msi-map" and "msi-map-mas= k". * * 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) + struct of_phandle_args *arg) { - return of_map_id(np, id, "msi-map", "msi-map-mask", target, id_out); + return of_map_id(np, id, "msi-map", "msi-map-mask", arg); } EXPORT_SYMBOL_GPL(of_map_msi_id); diff --git a/drivers/of/irq.c b/drivers/of/irq.c index e37c1b3f8736..18248c3d76ae 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -817,8 +817,14 @@ u32 of_msi_xlate(struct device *dev, struct device_nod= e **msi_np, u32 id_in) * "msi-map" or an "msi-parent" property. */ for (parent_dev =3D dev; parent_dev; parent_dev =3D parent_dev->parent) { - if (!of_map_msi_id(parent_dev->of_node, id_in, msi_np, &id_out)) + struct of_phandle_args msi_spec =3D { .np =3D *msi_np }; + + if (!of_map_msi_id(parent_dev->of_node, id_in, &msi_spec)) { + id_out =3D msi_spec.args[0]; + if (!*msi_np && msi_spec.np) + *msi_np =3D msi_spec.np; 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 bff8289f804a..5f8a11774eb5 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -1137,6 +1137,8 @@ static void imx_pcie_remove_lut(struct imx_pcie *imx_= pcie, u16 rid) =20 static int imx_pcie_add_lut_by_rid(struct imx_pcie *imx_pcie, u32 rid) { + struct of_phandle_args iommu_spec =3D { .np =3D NULL }; + struct of_phandle_args msi_spec =3D { .np =3D NULL }; struct device *dev =3D imx_pcie->pci->dev; struct device_node *target; u32 sid_i, sid_m; @@ -1144,7 +1146,12 @@ static int imx_pcie_add_lut_by_rid(struct imx_pcie *= imx_pcie, u32 rid) u32 sid =3D 0; =20 target =3D NULL; - err_i =3D of_map_iommu_id(dev->of_node, rid, &target, &sid_i); + err_i =3D of_map_iommu_id(dev->of_node, rid, &iommu_spec); + if (!err_i) { + target =3D iommu_spec.np; + sid_i =3D iommu_spec.args[0]; + } + if (target) { of_node_put(target); } else { @@ -1156,8 +1163,11 @@ static int imx_pcie_add_lut_by_rid(struct imx_pcie *= imx_pcie, u32 rid) err_i =3D -EINVAL; } =20 - target =3D NULL; - err_m =3D of_map_msi_id(dev->of_node, rid, &target, &sid_m); + err_m =3D of_map_msi_id(dev->of_node, rid, &msi_spec); + if (!err_m) { + target =3D msi_spec.np; + sid_m =3D msi_spec.args[0]; + } =20 /* * err_m target diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/p= cie-apple.c index a0937b7b3c4d..2e86f8fd300b 100644 --- a/drivers/pci/controller/pcie-apple.c +++ b/drivers/pci/controller/pcie-apple.c @@ -755,6 +755,7 @@ static int apple_pcie_enable_device(struct pci_host_bri= dge *bridge, struct pci_d { u32 sid, rid =3D pci_dev_id(pdev); struct apple_pcie_port *port; + struct of_phandle_args iommu_spec =3D { .np =3D NULL }; int idx, err; =20 port =3D apple_pcie_get_port(pdev); @@ -764,10 +765,12 @@ static int apple_pcie_enable_device(struct pci_host_b= ridge *bridge, struct pci_d dev_dbg(&pdev->dev, "added to bus %s, index %d\n", pci_name(pdev->bus->self), port->idx); =20 - err =3D of_map_iommu_id(port->pcie->dev->of_node, rid, NULL, &sid); + err =3D of_map_iommu_id(port->pcie->dev->of_node, rid, &iommu_spec); if (err) return err; =20 + of_node_put(iommu_spec.np); + sid =3D iommu_spec.args[0]; mutex_lock(&port->pcie->lock); =20 idx =3D bitmap_find_free_region(port->sid_map, port->sid_map_sz, 0); diff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c index 1b7696b2d762..36547d7cf1d6 100644 --- a/drivers/xen/grant-dma-ops.c +++ b/drivers/xen/grant-dma-ops.c @@ -319,13 +319,13 @@ static int xen_dt_grant_init_backend_domid(struct dev= ice *dev, struct device_node *np, domid_t *backend_domid) { - struct of_phandle_args iommu_spec =3D { .args_count =3D 1 }; + struct of_phandle_args iommu_spec =3D { .np =3D NULL }; =20 if (dev_is_pci(dev)) { struct pci_dev *pdev =3D to_pci_dev(dev); u32 rid =3D PCI_DEVID(pdev->bus->number, pdev->devfn); =20 - if (of_map_iommu_id(np, rid, &iommu_spec.np, iommu_spec.args)) { + if (of_map_iommu_id(np, rid, &iommu_spec)) { dev_dbg(dev, "Cannot translate ID\n"); return -ESRCH; } diff --git a/include/linux/of.h b/include/linux/of.h index fe841f3cc747..f50d7a3a3b28 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -463,13 +463,13 @@ bool of_console_check(const struct device_node *dn, c= har *name, int index); =20 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); + struct of_phandle_args *arg); =20 int of_map_iommu_id(const struct device_node *np, u32 id, - struct device_node **target, u32 *id_out); + struct of_phandle_args *arg); =20 int of_map_msi_id(const struct device_node *np, u32 id, - struct device_node **target, u32 *id_out); + struct of_phandle_args *arg); =20 phys_addr_t of_dma_get_max_cpu_address(struct device_node *np); =20 @@ -935,19 +935,19 @@ static inline void of_property_clear_flag(struct prop= erty *p, unsigned long flag =20 static inline 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) + struct of_phandle_args *arg) { return -EINVAL; } =20 static inline int of_map_iommu_id(const struct device_node *np, u32 id, - struct device_node **target, u32 *id_out) + struct of_phandle_args *arg) { return -EINVAL; } =20 static inline int of_map_msi_id(const struct device_node *np, u32 id, - struct device_node **target, u32 *id_out) + struct of_phandle_args *arg) { return -EINVAL; } --=20 2.34.1