C++ (Cpp) devm_pci_remap_cfg_resource Examples

Example #1

File: pci-layerscape-ep.c Project: avagin/linux

static int __init ls_pcie_ep_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct dw_pcie *pci;
	struct ls_pcie_ep *pcie;
	struct resource *dbi_base;
	int ret;

	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
	if (!pcie)
		return -ENOMEM;

	pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
	if (!pci)
		return -ENOMEM;

	dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
	pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);
	if (IS_ERR(pci->dbi_base))
		return PTR_ERR(pci->dbi_base);

	pci->dbi_base2 = pci->dbi_base + PCIE_DBI2_OFFSET;
	pci->dev = dev;
	pci->ops = &ls_pcie_ep_ops;
	pcie->pci = pci;

	platform_set_drvdata(pdev, pcie);

	ret = ls_add_pcie_ep(pcie, pdev);

	return ret;
}

Example #2

File: pcie-armada8k.c Project: ReneNyffenegger/linux

static int armada8k_pcie_probe(struct platform_device *pdev)
{
	struct dw_pcie *pci;
	struct armada8k_pcie *pcie;
	struct device *dev = &pdev->dev;
	struct resource *base;
	int ret;

	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
	if (!pcie)
		return -ENOMEM;

	pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
	if (!pci)
		return -ENOMEM;

	pci->dev = dev;
	pci->ops = &dw_pcie_ops;

	pcie->pci = pci;

	pcie->clk = devm_clk_get(dev, NULL);
	if (IS_ERR(pcie->clk))
		return PTR_ERR(pcie->clk);

	ret = clk_prepare_enable(pcie->clk);
	if (ret)
		return ret;

	/* Get the dw-pcie unit configuration/control registers base. */
	base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl");
	pci->dbi_base = devm_pci_remap_cfg_resource(dev, base);
	if (IS_ERR(pci->dbi_base)) {
		dev_err(dev, "couldn't remap regs base %p\n", base);
		ret = PTR_ERR(pci->dbi_base);
		goto fail;
	}

	platform_set_drvdata(pdev, pcie);

	ret = armada8k_add_pcie_port(pcie, pdev);
	if (ret)
		goto fail;

	return 0;

fail:
	if (!IS_ERR(pcie->clk))
		clk_disable_unprepare(pcie->clk);

	return ret;
}

Example #3

File: pci-keystone-dw.c Project: Lyude/linux

/**
 * ks_dw_pcie_host_init() - initialize host for v3_65 dw hardware
 *
 * Ioremap the register resources, initialize legacy irq domain
 * and call dw_pcie_v3_65_host_init() API to initialize the Keystone
 * PCI host controller.
 */
int __init ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie,
				struct device_node *msi_intc_np)
{
	struct dw_pcie *pci = ks_pcie->pci;
	struct pcie_port *pp = &pci->pp;
	struct device *dev = pci->dev;
	struct platform_device *pdev = to_platform_device(dev);
	struct resource *res;

	/* Index 0 is the config reg. space address */
	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	pci->dbi_base = devm_pci_remap_cfg_resource(dev, res);
	if (IS_ERR(pci->dbi_base))
		return PTR_ERR(pci->dbi_base);

	/*
	 * We set these same and is used in pcie rd/wr_other_conf
	 * functions
	 */
	pp->va_cfg0_base = pci->dbi_base + SPACE0_REMOTE_CFG_OFFSET;
	pp->va_cfg1_base = pp->va_cfg0_base;

	/* Index 1 is the application reg. space address */
	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
	ks_pcie->va_app_base = devm_ioremap_resource(dev, res);
	if (IS_ERR(ks_pcie->va_app_base))
		return PTR_ERR(ks_pcie->va_app_base);

	ks_pcie->app = *res;

	/* Create legacy IRQ domain */
	ks_pcie->legacy_irq_domain =
			irq_domain_add_linear(ks_pcie->legacy_intc_np,
					PCI_NUM_INTX,
					&ks_dw_pcie_legacy_irq_domain_ops,
					NULL);
	if (!ks_pcie->legacy_irq_domain) {
		dev_err(dev, "Failed to add irq domain for legacy irqs\n");
		return -EINVAL;
	}

	return dw_pcie_host_init(pp);
}