static int add_pcie_port(struct pcie_port *pp, struct platform_device *pdev)
{
int ret;
pp->irq = platform_get_irq(pdev, 1);
if (!pp->irq) {
dev_err(&pdev->dev, "failed to get irq\n");
return -ENODEV;
}
ret = devm_request_irq(&pdev->dev, pp->irq, exynos_pcie_irq_handler,
IRQF_SHARED, "exynos-pcie", pp);
if (ret) {
dev_err(&pdev->dev, "failed to request irq\n");
return ret;
}
pp->root_bus_nr = -1;
pp->ops = &exynos_pcie_host_ops;
spin_lock_init(&pp->conf_lock);
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(&pdev->dev, "failed to initialize host\n");
return ret;
}
return 0;
}
static int spear13xx_add_pcie_port(struct spear13xx_pcie *spear13xx_pcie,
struct platform_device *pdev)
{
struct pcie_port *pp = &spear13xx_pcie->pp;
struct device *dev = pp->dev;
int ret;
pp->irq = platform_get_irq(pdev, 0);
if (!pp->irq) {
dev_err(dev, "failed to get irq\n");
return -ENODEV;
}
ret = devm_request_irq(dev, pp->irq, spear13xx_pcie_irq_handler,
IRQF_SHARED | IRQF_NO_THREAD,
"spear1340-pcie", spear13xx_pcie);
if (ret) {
dev_err(dev, "failed to request irq %d\n", pp->irq);
return ret;
}
pp->root_bus_nr = -1;
pp->ops = &spear13xx_pcie_host_ops;
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "failed to initialize host\n");
return ret;
}
return 0;
}
static int armada8k_add_pcie_port(struct pcie_port *pp,
struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int ret;
pp->root_bus_nr = -1;
pp->ops = &armada8k_pcie_host_ops;
pp->irq = platform_get_irq(pdev, 0);
if (!pp->irq) {
dev_err(dev, "failed to get irq for port\n");
return -ENODEV;
}
ret = devm_request_irq(dev, pp->irq, armada8k_pcie_irq_handler,
IRQF_SHARED, "armada8k-pcie", pp);
if (ret) {
dev_err(dev, "failed to request irq %d\n", pp->irq);
return ret;
}
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "failed to initialize host: %d\n", ret);
return ret;
}
return 0;
}
static int dw_plat_add_pcie_port(struct pcie_port *pp,
struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int ret;
pp->irq = platform_get_irq(pdev, 1);
if (pp->irq < 0)
return pp->irq;
if (IS_ENABLED(CONFIG_PCI_MSI)) {
pp->msi_irq = platform_get_irq(pdev, 0);
if (pp->msi_irq < 0)
return pp->msi_irq;
ret = devm_request_irq(dev, pp->msi_irq,
dw_plat_pcie_msi_irq_handler,
IRQF_SHARED, "dw-plat-pcie-msi", pp);
if (ret) {
dev_err(dev, "failed to request MSI IRQ\n");
return ret;
}
}
pp->root_bus_nr = -1;
pp->ops = &dw_plat_pcie_host_ops;
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "failed to initialize host\n");
return ret;
}
return 0;
}
static int __init kirin_add_pcie_port(struct dw_pcie *pci,
struct platform_device *pdev)
{
int ret;
ret = kirin_pcie_add_msi(pci, pdev);
if (ret)
return ret;
pci->pp.ops = &kirin_pcie_host_ops;
return dw_pcie_host_init(&pci->pp);
}
static int __init exynos_add_pcie_port(struct exynos_pcie *ep,
struct platform_device *pdev)
{
struct dw_pcie *pci = ep->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = &pdev->dev;
int ret;
pp->irq = platform_get_irq(pdev, 1);
if (pp->irq < 0) {
dev_err(dev, "failed to get irq\n");
return pp->irq;
}
ret = devm_request_irq(dev, pp->irq, exynos_pcie_irq_handler,
IRQF_SHARED, "exynos-pcie", ep);
if (ret) {
dev_err(dev, "failed to request irq\n");
return ret;
}
if (IS_ENABLED(CONFIG_PCI_MSI)) {
pp->msi_irq = platform_get_irq(pdev, 0);
if (pp->msi_irq < 0) {
dev_err(dev, "failed to get msi irq\n");
return pp->msi_irq;
}
ret = devm_request_irq(dev, pp->msi_irq,
exynos_pcie_msi_irq_handler,
IRQF_SHARED | IRQF_NO_THREAD,
"exynos-pcie", ep);
if (ret) {
dev_err(dev, "failed to request msi irq\n");
return ret;
}
}
pp->root_bus_nr = -1;
pp->ops = &exynos_pcie_host_ops;
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "failed to initialize host\n");
return ret;
}
return 0;
}
static int __init dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx,
struct platform_device *pdev)
{
int ret;
struct pcie_port *pp;
struct resource *res;
struct device *dev = &pdev->dev;
pp = &dra7xx->pp;
pp->dev = dev;
pp->ops = &dra7xx_pcie_host_ops;
pp->irq = platform_get_irq(pdev, 1);
if (pp->irq < 0) {
dev_err(dev, "missing IRQ resource\n");
return -EINVAL;
}
ret = devm_request_irq(&pdev->dev, pp->irq,
dra7xx_pcie_msi_irq_handler,
IRQF_SHARED | IRQF_NO_THREAD,
"dra7-pcie-msi", pp);
if (ret) {
dev_err(&pdev->dev, "failed to request irq\n");
return ret;
}
if (!IS_ENABLED(CONFIG_PCI_MSI)) {
ret = dra7xx_pcie_init_irq_domain(pp);
if (ret < 0)
return ret;
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rc_dbics");
pp->dbi_base = devm_ioremap(dev, res->start, resource_size(res));
if (!pp->dbi_base)
return -ENOMEM;
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dra7xx->dev, "failed to initialize host\n");
return ret;
}
return 0;
}
static int __init exynos_add_pcie_port(struct pcie_port *pp,
struct platform_device *pdev)
{
int ret;
pp->irq = platform_get_irq(pdev, 1);
if (!pp->irq) {
dev_err(&pdev->dev, "failed to get irq\n");
return -ENODEV;
}
ret = devm_request_irq(&pdev->dev, pp->irq, exynos_pcie_irq_handler,
IRQF_SHARED, "exynos-pcie", pp);
if (ret) {
dev_err(&pdev->dev, "failed to request irq\n");
return ret;
}
if (IS_ENABLED(CONFIG_PCI_MSI)) {
pp->msi_irq = platform_get_irq(pdev, 0);
if (!pp->msi_irq) {
dev_err(&pdev->dev, "failed to get msi irq\n");
return -ENODEV;
}
ret = devm_request_irq(&pdev->dev, pp->msi_irq,
exynos_pcie_msi_irq_handler,
IRQF_SHARED, "exynos-pcie", pp);
if (ret) {
dev_err(&pdev->dev, "failed to request msi irq\n");
return ret;
}
}
pp->root_bus_nr = -1;
pp->ops = &exynos_pcie_host_ops;
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(&pdev->dev, "failed to initialize host\n");
return ret;
}
return 0;
}
/**
* 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);
}
static int histb_pcie_probe(struct platform_device *pdev)
{
struct histb_pcie *hipcie;
struct dw_pcie *pci;
struct pcie_port *pp;
struct resource *res;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
enum of_gpio_flags of_flags;
unsigned long flag = GPIOF_DIR_OUT;
int ret;
hipcie = devm_kzalloc(dev, sizeof(*hipcie), GFP_KERNEL);
if (!hipcie)
return -ENOMEM;
pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
if (!pci)
return -ENOMEM;
hipcie->pci = pci;
pp = &pci->pp;
pci->dev = dev;
pci->ops = &dw_pcie_ops;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "control");
hipcie->ctrl = devm_ioremap_resource(dev, res);
if (IS_ERR(hipcie->ctrl)) {
dev_err(dev, "cannot get control reg base\n");
return PTR_ERR(hipcie->ctrl);
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rc-dbi");
pci->dbi_base = devm_ioremap_resource(dev, res);
if (IS_ERR(pci->dbi_base)) {
dev_err(dev, "cannot get rc-dbi base\n");
return PTR_ERR(pci->dbi_base);
}
hipcie->vpcie = devm_regulator_get_optional(dev, "vpcie");
if (IS_ERR(hipcie->vpcie)) {
if (PTR_ERR(hipcie->vpcie) == -EPROBE_DEFER)
return -EPROBE_DEFER;
hipcie->vpcie = NULL;
}
hipcie->reset_gpio = of_get_named_gpio_flags(np,
"reset-gpios", 0, &of_flags);
if (of_flags & OF_GPIO_ACTIVE_LOW)
flag |= GPIOF_ACTIVE_LOW;
if (gpio_is_valid(hipcie->reset_gpio)) {
ret = devm_gpio_request_one(dev, hipcie->reset_gpio,
flag, "PCIe device power control");
if (ret) {
dev_err(dev, "unable to request gpio\n");
return ret;
}
}
hipcie->aux_clk = devm_clk_get(dev, "aux");
if (IS_ERR(hipcie->aux_clk)) {
dev_err(dev, "Failed to get PCIe aux clk\n");
return PTR_ERR(hipcie->aux_clk);
}
hipcie->pipe_clk = devm_clk_get(dev, "pipe");
if (IS_ERR(hipcie->pipe_clk)) {
dev_err(dev, "Failed to get PCIe pipe clk\n");
return PTR_ERR(hipcie->pipe_clk);
}
hipcie->sys_clk = devm_clk_get(dev, "sys");
if (IS_ERR(hipcie->sys_clk)) {
dev_err(dev, "Failed to get PCIEe sys clk\n");
return PTR_ERR(hipcie->sys_clk);
}
hipcie->bus_clk = devm_clk_get(dev, "bus");
if (IS_ERR(hipcie->bus_clk)) {
dev_err(dev, "Failed to get PCIe bus clk\n");
return PTR_ERR(hipcie->bus_clk);
}
hipcie->soft_reset = devm_reset_control_get(dev, "soft");
if (IS_ERR(hipcie->soft_reset)) {
dev_err(dev, "couldn't get soft reset\n");
return PTR_ERR(hipcie->soft_reset);
}
hipcie->sys_reset = devm_reset_control_get(dev, "sys");
if (IS_ERR(hipcie->sys_reset)) {
dev_err(dev, "couldn't get sys reset\n");
return PTR_ERR(hipcie->sys_reset);
}
hipcie->bus_reset = devm_reset_control_get(dev, "bus");
if (IS_ERR(hipcie->bus_reset)) {
dev_err(dev, "couldn't get bus reset\n");
return PTR_ERR(hipcie->bus_reset);
}
if (IS_ENABLED(CONFIG_PCI_MSI)) {
pp->msi_irq = platform_get_irq_byname(pdev, "msi");
if (pp->msi_irq < 0) {
dev_err(dev, "Failed to get MSI IRQ\n");
return pp->msi_irq;
}
}
hipcie->phy = devm_phy_get(dev, "phy");
if (IS_ERR(hipcie->phy)) {
dev_info(dev, "no pcie-phy found\n");
hipcie->phy = NULL;
/* fall through here!
* if no pcie-phy found, phy init
* should be done under boot!
*/
} else {
phy_init(hipcie->phy);
}
pp->root_bus_nr = -1;
pp->ops = &histb_pcie_host_ops;
platform_set_drvdata(pdev, hipcie);
ret = histb_pcie_host_enable(pp);
if (ret) {
dev_err(dev, "failed to enable host\n");
return ret;
}
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "failed to initialize host\n");
return ret;
}
return 0;
}
