Function pci_configure_ari

components/drivers/pci/probe.c:204–241

}

static void pci_configure_ari(struct rt_pci_device *pdev)
{
    rt_uint32_t cap, ctl2_ari;
    struct rt_pci_device *bridge;

    if (!rt_pci_is_pcie(pdev) || pdev->devfn)
    {
        return;
    }

    bridge = pdev->bus->self;

    if (rt_pci_is_root_bus(pdev->bus) || !bridge)
    {
        return;
    }

    rt_pci_read_config_u32(bridge, bridge->pcie_cap + PCIER_DEVICE_CAP2, &cap);
    if (!(cap & PCIEM_CAP2_ARI))
    {
        return;
    }

    rt_pci_read_config_u32(bridge, bridge->pcie_cap + PCIER_DEVICE_CTL2, &ctl2_ari);

    if (rt_pci_find_ext_capability(pdev, PCIZ_ARI))
    {
        ctl2_ari |= PCIEM_CTL2_ARI;
        bridge->ari_enabled = RT_TRUE;
    }
    else
    {
        ctl2_ari &= ~PCIEM_CTL2_ARI;
        bridge->ari_enabled = RT_FALSE;
    }

    rt_pci_write_config_u32(bridge, bridge->pcie_cap + PCIER_DEVICE_CTL2, ctl2_ari);
}

static rt_uint16_t pci_cfg_space_size_ext(struct rt_pci_device *pdev)
{