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2 Commits

Author SHA1 Message Date
GuEe-GUI 1ac8044294 [DM/FIXUP] Fixup PCI device ofw private node for MSI 
Some PCI device devicetree is like:
```dts
pcie@fe270000 {
    device_type = "pci";
    msi-map = <0x1000 0x9c 0x1000 0x1000>;

    pcie@10 {
        reg = <0x100000 0x00 0x00 0x00 0x00>;
        #address-cells = <0x03>;
        #size-cells = <0x02>;

        pcie@10,0 {
            reg = <0x00 0x00 0x00 0x00 0x00>;
        };
    };
};
```

that the pcie@10,0 have a private ofw node, it will find
property name `msi-map` or `msi-parent` fail.
We should only find the property in host bridge's ofw node.

Signed-off-by: GuEe-GUI <2991707448@qq.com>
 2024-11-26 11:14:51 +08:00
GuEe-GUI 2168ed8e7d [DM/Feature] Basic PCI/PCIe (Peripheral Component Interconnect Express) bus 
PCI/PCIe have better performance and more devices support, such as
NVMe, GPU, Powerful NIC (Like RDMA). PCI/PCIe can access control by
IOMMU that the virtualiztion and userspace driver will more safety.
PCI/PCIe device could hot plugging, no design modifications SoC required,
PCI/PCIe on Embedded SoC is popular now.
We make a simple framework to support them.

Feature Lists:
1.PCI INTx: the INT[A-D] pin IRQ for legacy PCI, work with platform PIC.
2.MSI/MSI-X: the message write IRQ for PCIe, work with platform's PIC.
3.PME: we only support the D0, D1, D2, D3HOT, D3COLD init by framework.
4.Endpoint: a simple EP framework for PCI FPGA or NTB function.
5.OFW: we only support work on OFW SoC, ACPI support in the future maybe.

Host controller:
1. Common PCI host controller on ECAM.
2. Generic PCI host controller on ECAM.

Signed-off-by: GuEe-GUI <2991707448@qq.com>
 2024-09-06 17:45:03 -04:00