From: Robin Murphy <robin.murphy@arm.com>
Since we now have quite a few users parsing "iommu-map" and "msi-map"
properties, give them some wrappers to conveniently encapsulate the
appropriate sets of property names. This will also make it easier to
then change of_map_id() to correctly account for specifier cells.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>
---
drivers/cdx/cdx_msi.c | 3 +--
drivers/iommu/of_iommu.c | 4 +---
drivers/irqchip/irq-gic-its-msi-parent.c | 2 +-
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 | 14 ++++++++++++++
8 files changed, 22 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/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..824649867810 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -1457,6 +1457,20 @@ static inline int of_property_read_s32(const struct device_node *np,
return of_property_read_u32(np, propname, (u32*) out_value);
}
+static inline 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);
+}
+
+static inline 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);
+}
+
#define of_for_each_phandle(it, err, np, ln, cn, cc) \
for (of_phandle_iterator_init((it), (np), (ln), (cn), (cc)), \
err = of_phandle_iterator_next(it); \
--
2.34.1On Sun, 01 Mar 2026 08:34:19 +0000,
Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com> wrote:
>
> From: Robin Murphy <robin.murphy@arm.com>
>
> Since we now have quite a few users parsing "iommu-map" and "msi-map"
> properties, give them some wrappers to conveniently encapsulate the
> appropriate sets of property names. This will also make it easier to
> then change of_map_id() to correctly account for specifier cells.
>
> Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
> Signed-off-by: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>
> ---
> drivers/cdx/cdx_msi.c | 3 +--
> drivers/iommu/of_iommu.c | 4 +---
> drivers/irqchip/irq-gic-its-msi-parent.c | 2 +-
> 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 | 14 ++++++++++++++
> 8 files changed, 22 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/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..824649867810 100644
> --- a/include/linux/of.h
> +++ b/include/linux/of.h
> @@ -1457,6 +1457,20 @@ static inline int of_property_read_s32(const struct device_node *np,
> return of_property_read_u32(np, propname, (u32*) out_value);
> }
>
> +static inline 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);
> +}
> +
> +static inline 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);
> +}
> +
Any particular reason why this is made inline instead of out of line
in of/base.c? Also, some documentation would be helpful for the
aspiring hackers dipping into this.
Other than that,
Acked-by: Marc Zyngier <maz@kernel.org>
M.
--
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