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PCI: imx6: Add helper function imx_pcie_add_lut_by_rid()

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Add helper function imx_pcie_add_lut_by_rid(), which will be used by the
upcoming LUT configuration for MSI/IOMMU in the Endpoint mode. No
functional change.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
[mani: reworded commit message and dropped tested-by tag]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20250710-ep-msi-v21-1-57683fc7fb25@nxp.com
This commit is contained in:
Frank Li
2025-07-21 18:33:50 +05:30
committed by Manivannan Sadhasivam
parent 399444a87a
commit 9d0ca8df24
1 changed files with 10 additions and 7 deletions
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drivers/pci/controller/dwc/pci-imx6.c
+10 -7
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@@ -1096,18 +1096,14 @@ static void imx_pcie_remove_lut(struct imx_pcie *imx_pcie, u16 rid)
}
}
static int imx_pcie_enable_device(struct pci_host_bridge *bridge,
struct pci_dev *pdev)
static int imx_pcie_add_lut_by_rid(struct imx_pcie *imx_pcie, u32 rid)
{
struct imx_pcie *imx_pcie = to_imx_pcie(to_dw_pcie_from_pp(bridge->sysdata));
u32 sid_i, sid_m, rid = pci_dev_id(pdev);
struct device *dev = imx_pcie->pci->dev;
struct device_node *target;
struct device *dev;
u32 sid_i, sid_m;
int err_i, err_m;
u32 sid = 0;
dev = imx_pcie->pci->dev;
target = NULL;
err_i = of_map_id(dev->of_node, rid, "iommu-map", "iommu-map-mask",
&target, &sid_i);
@@ -1182,6 +1178,13 @@ static int imx_pcie_enable_device(struct pci_host_bridge *bridge,
return imx_pcie_add_lut(imx_pcie, rid, sid);
}
static int imx_pcie_enable_device(struct pci_host_bridge *bridge, struct pci_dev *pdev)
{
struct imx_pcie *imx_pcie = to_imx_pcie(to_dw_pcie_from_pp(bridge->sysdata));
return imx_pcie_add_lut_by_rid(imx_pcie, pci_dev_id(pdev));
}
static void imx_pcie_disable_device(struct pci_host_bridge *bridge,
struct pci_dev *pdev)
{