Function rt_pci_scan_single_device

components/drivers/pci/probe.c:110–156

}

struct rt_pci_device *rt_pci_scan_single_device(struct rt_pci_bus *bus, rt_uint32_t devfn)
{
    rt_err_t err;
    struct rt_pci_device *pdev = RT_NULL;
    rt_uint16_t vendor = PCI_ANY_ID, device = PCI_ANY_ID;

    if (!bus)
    {
        goto _end;
    }

    err = rt_pci_bus_read_config_u16(bus, devfn, PCIR_VENDOR, &vendor);
    rt_pci_bus_read_config_u16(bus, devfn, PCIR_DEVICE, &device);

    if (vendor == (typeof(vendor))PCI_ANY_ID ||
        vendor == (typeof(vendor))0x0000 || err)
    {
        goto _end;
    }

    if (!(pdev = rt_pci_alloc_device(bus)))
    {
        goto _end;
    }

    pdev->devfn = devfn;
    pdev->vendor = vendor;
    pdev->device = device;

    rt_dm_dev_set_name(&pdev->parent, "%04x:%02x:%02x.%u",
            rt_pci_domain(pdev), pdev->bus->number,
            RT_PCI_SLOT(pdev->devfn), RT_PCI_FUNC(pdev->devfn));

    if (rt_pci_setup_device(pdev))
    {
        rt_free(pdev);
        pdev = RT_NULL;

        goto _end;
    }

    pci_procfs_attach(pdev);
    rt_pci_device_register(pdev);

_end:
    return pdev;
}

static rt_bool_t pci_intx_mask_broken(struct rt_pci_device *pdev)
{