1 // SPDX-License-Identifier: GPL-2.0
19 #include "pcie-designware.h"
35 #define to_ls_pcie_ep(x)	dev_get_drvdata((x)->dev)
54 	struct dw_pcie *pci = pcie->pci;  in ls_pcie_pf_lut_readl()
56 	if (pcie->big_endian)  in ls_pcie_pf_lut_readl()
57 		return ioread32be(pci->dbi_base + offset);  in ls_pcie_pf_lut_readl()
59 		return ioread32(pci->dbi_base + offset);  in ls_pcie_pf_lut_readl()
64 	struct dw_pcie *pci = pcie->pci;  in ls_pcie_pf_lut_writel()
66 	if (pcie->big_endian)  in ls_pcie_pf_lut_writel()
67 		iowrite32be(value, pci->dbi_base + offset);  in ls_pcie_pf_lut_writel()
69 		iowrite32(value, pci->dbi_base + offset);  in ls_pcie_pf_lut_writel()
75 	struct dw_pcie *pci = pcie->pci;  in ls_pcie_ep_event_handler()
92 		 * during link down or hot reset. Restore initial value  in ls_pcie_ep_event_handler()
93 		 * that configured by the Reset Configuration Word (RCW).  in ls_pcie_ep_event_handler()
96 		dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCAP, pcie->lnkcap);  in ls_pcie_ep_event_handler()
102 		dw_pcie_ep_linkup(&pci->ep);  in ls_pcie_ep_event_handler()
104 		dev_dbg(pci->dev, "Link up\n");  in ls_pcie_ep_event_handler()
106 		dev_dbg(pci->dev, "Link down\n");  in ls_pcie_ep_event_handler()
107 		dw_pcie_ep_linkdown(&pci->ep);  in ls_pcie_ep_event_handler()
109 		dev_dbg(pci->dev, "Hot reset\n");  in ls_pcie_ep_event_handler()
121 	pcie->irq = platform_get_irq_byname(pdev, "pme");  in ls_pcie_ep_interrupt_init()
122 	if (pcie->irq < 0)  in ls_pcie_ep_interrupt_init()
123 		return pcie->irq;  in ls_pcie_ep_interrupt_init()
125 	ret = devm_request_irq(&pdev->dev, pcie->irq, ls_pcie_ep_event_handler,  in ls_pcie_ep_interrupt_init()
126 			       IRQF_SHARED, pdev->name, pcie);  in ls_pcie_ep_interrupt_init()
128 		dev_err(&pdev->dev, "Can't register PCIe IRQ\n");  in ls_pcie_ep_interrupt_init()
147 	return pcie->ls_epc;  in ls_pcie_ep_get_features()
164 	pcie->ls_epc->msi_capable = ep_func->msi_cap ? true : false;  in ls_pcie_ep_init()
165 	pcie->ls_epc->msix_capable = ep_func->msix_cap ? true : false;  in ls_pcie_ep_init()
182 		dev_err(pci->dev, "UNKNOWN IRQ type\n");  in ls_pcie_ep_raise_irq()
183 		return -EINVAL;  in ls_pcie_ep_raise_irq()
192 	WARN_ON(func_no && !pcie->drvdata->func_offset);  in ls_pcie_ep_get_dbi_offset()
193 	return pcie->drvdata->func_offset * func_no;  in ls_pcie_ep_get_dbi_offset()
218 	{ .compatible = "fsl,ls1028a-pcie-ep", .data = &ls1_ep_drvdata },
219 	{ .compatible = "fsl,ls1046a-pcie-ep", .data = &ls1_ep_drvdata },
220 	{ .compatible = "fsl,ls1088a-pcie-ep", .data = &ls2_ep_drvdata },
221 	{ .compatible = "fsl,ls2088a-pcie-ep", .data = &ls2_ep_drvdata },
222 	{ .compatible = "fsl,lx2160ar2-pcie-ep", .data = &lx2_ep_drvdata },
228 	struct device *dev = &pdev->dev;  in ls_pcie_ep_probe()
238 		return -ENOMEM;  in ls_pcie_ep_probe()
242 		return -ENOMEM;  in ls_pcie_ep_probe()
246 		return -ENOMEM;  in ls_pcie_ep_probe()
248 	pcie->drvdata = of_device_get_match_data(dev);  in ls_pcie_ep_probe()
250 	pci->dev = dev;  in ls_pcie_ep_probe()
251 	pci->ops = pcie->drvdata->dw_pcie_ops;  in ls_pcie_ep_probe()
253 	ls_epc->bar[BAR_2].only_64bit = true;  in ls_pcie_ep_probe()
254 	ls_epc->bar[BAR_3].type = BAR_RESERVED;  in ls_pcie_ep_probe()
255 	ls_epc->bar[BAR_4].only_64bit = true;  in ls_pcie_ep_probe()
256 	ls_epc->bar[BAR_5].type = BAR_RESERVED;  in ls_pcie_ep_probe()
257 	ls_epc->linkup_notifier = true;  in ls_pcie_ep_probe()
259 	pcie->pci = pci;  in ls_pcie_ep_probe()
260 	pcie->ls_epc = ls_epc;  in ls_pcie_ep_probe()
263 	pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);  in ls_pcie_ep_probe()
264 	if (IS_ERR(pci->dbi_base))  in ls_pcie_ep_probe()
265 		return PTR_ERR(pci->dbi_base);  in ls_pcie_ep_probe()
267 	pci->ep.ops = &ls_pcie_ep_ops;  in ls_pcie_ep_probe()
269 	pcie->big_endian = of_property_read_bool(dev->of_node, "big-endian");  in ls_pcie_ep_probe()
276 	pcie->lnkcap = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCAP);  in ls_pcie_ep_probe()
278 	ret = dw_pcie_ep_init(&pci->ep);  in ls_pcie_ep_probe()
282 	ret = dw_pcie_ep_init_registers(&pci->ep);  in ls_pcie_ep_probe()
285 		dw_pcie_ep_deinit(&pci->ep);  in ls_pcie_ep_probe()
289 	pci_epc_init_notify(pci->ep.epc);  in ls_pcie_ep_probe()
296 		.name = "layerscape-pcie-ep",