Function rt_pci_alloc_device

components/drivers/pci/probe.c:73–108

}

struct rt_pci_device *rt_pci_alloc_device(struct rt_pci_bus *bus)
{
    struct rt_pci_device *pdev = rt_calloc(1, sizeof(*pdev));

    if (!pdev)
    {
        return RT_NULL;
    }

    rt_list_init(&pdev->list);
    pdev->bus = bus;

    if (bus)
    {
        spin_lock(&bus->lock);
        rt_list_insert_before(&bus->devices_nodes, &pdev->list);
        spin_unlock(&bus->lock);
    }

    pdev->subsystem_vendor = PCI_ANY_ID;
    pdev->subsystem_device = PCI_ANY_ID;

    pdev->irq = -1;

    for (int i = 0; i < RT_ARRAY_SIZE(pdev->resource); ++i)
    {
        pdev->resource[i].flags = PCI_BUS_REGION_F_NONE;
    }

#ifdef RT_PCI_MSI
    rt_list_init(&pdev->msi_desc_nodes);
    rt_spin_lock_init(&pdev->msi_lock);
#endif

    return pdev;
}

struct rt_pci_device *rt_pci_scan_single_device(struct rt_pci_bus *bus, rt_uint32_t devfn)
{