C++ (Cpp) iproc_pcie_enable Beispiele

Beispiel #1

Datei: pcie-iproc.c Projekt: DenisLug/mptcp

int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
{
	int ret;
	void *sysdata;
	struct pci_bus *bus;

	if (!pcie || !pcie->dev || !pcie->base)
		return -EINVAL;

	ret = phy_init(pcie->phy);
	if (ret) {
		dev_err(pcie->dev, "unable to initialize PCIe PHY\n");
		return ret;
	}

	ret = phy_power_on(pcie->phy);
	if (ret) {
		dev_err(pcie->dev, "unable to power on PCIe PHY\n");
		goto err_exit_phy;
	}

	iproc_pcie_reset(pcie);

#ifdef CONFIG_ARM
	pcie->sysdata.private_data = pcie;
	sysdata = &pcie->sysdata;
#else
	sysdata = pcie;
#endif

	bus = pci_create_root_bus(pcie->dev, 0, &iproc_pcie_ops, sysdata, res);
	if (!bus) {
		dev_err(pcie->dev, "unable to create PCI root bus\n");
		ret = -ENOMEM;
		goto err_power_off_phy;
	}
	pcie->root_bus = bus;

	ret = iproc_pcie_check_link(pcie, bus);
	if (ret) {
		dev_err(pcie->dev, "no PCIe EP device detected\n");
		goto err_rm_root_bus;
	}

	iproc_pcie_enable(pcie);

	pci_scan_child_bus(bus);
	pci_assign_unassigned_bus_resources(bus);
#ifdef CONFIG_ARM
	pci_fixup_irqs(pci_common_swizzle, pcie->map_irq);
#endif
	pci_bus_add_devices(bus);

	return 0;

err_rm_root_bus:
	pci_stop_root_bus(bus);
	pci_remove_root_bus(bus);

err_power_off_phy:
	phy_power_off(pcie->phy);
err_exit_phy:
	phy_exit(pcie->phy);
	return ret;
}

Beispiel #2

Datei: pcie-iproc.c Projekt: acton393/linux

int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
{
	struct device *dev;
	int ret;
	void *sysdata;
	struct pci_bus *bus;

	dev = pcie->dev;
	ret = devm_request_pci_bus_resources(dev, res);
	if (ret)
		return ret;

	ret = phy_init(pcie->phy);
	if (ret) {
		dev_err(dev, "unable to initialize PCIe PHY\n");
		return ret;
	}

	ret = phy_power_on(pcie->phy);
	if (ret) {
		dev_err(dev, "unable to power on PCIe PHY\n");
		goto err_exit_phy;
	}

	switch (pcie->type) {
	case IPROC_PCIE_PAXB:
		pcie->reg_offsets = iproc_pcie_reg_paxb;
		break;
	case IPROC_PCIE_PAXC:
		pcie->reg_offsets = iproc_pcie_reg_paxc;
		break;
	default:
		dev_err(dev, "incompatible iProc PCIe interface\n");
		ret = -EINVAL;
		goto err_power_off_phy;
	}

	iproc_pcie_reset(pcie);

	if (pcie->need_ob_cfg) {
		ret = iproc_pcie_map_ranges(pcie, res);
		if (ret) {
			dev_err(dev, "map failed\n");
			goto err_power_off_phy;
		}
	}

#ifdef CONFIG_ARM
	pcie->sysdata.private_data = pcie;
	sysdata = &pcie->sysdata;
#else
	sysdata = pcie;
#endif

	bus = pci_create_root_bus(dev, 0, &iproc_pcie_ops, sysdata, res);
	if (!bus) {
		dev_err(dev, "unable to create PCI root bus\n");
		ret = -ENOMEM;
		goto err_power_off_phy;
	}
	pcie->root_bus = bus;

	ret = iproc_pcie_check_link(pcie, bus);
	if (ret) {
		dev_err(dev, "no PCIe EP device detected\n");
		goto err_rm_root_bus;
	}

	iproc_pcie_enable(pcie);

	if (IS_ENABLED(CONFIG_PCI_MSI))
		if (iproc_pcie_msi_enable(pcie))
			dev_info(dev, "not using iProc MSI\n");

	pci_scan_child_bus(bus);
	pci_assign_unassigned_bus_resources(bus);
	pci_fixup_irqs(pci_common_swizzle, pcie->map_irq);
	pci_bus_add_devices(bus);

	return 0;

err_rm_root_bus:
	pci_stop_root_bus(bus);
	pci_remove_root_bus(bus);

err_power_off_phy:
	phy_power_off(pcie->phy);
err_exit_phy:
	phy_exit(pcie->phy);
	return ret;
}