1 // SPDX-License-Identifier: GPL-2.0
19 #include <linux/pci.h>
25 #include "../../pci.h"
26 #include "pcie-designware.h"
31 #define PCIE_ABSERR_SETTING	0x9401 /* Forward error of non-posted request */
46 	struct dw_pcie *pci;  member
53 #define to_ls_pcie(x)	dev_get_drvdata((x)->dev)
57 	struct dw_pcie *pci = pcie->pci;  in ls_pcie_is_bridge()  local
60 	header_type = ioread8(pci->dbi_base + PCI_HEADER_TYPE);  in ls_pcie_is_bridge()
66 /* Clear multi-function bit */
69 	struct dw_pcie *pci = pcie->pci;  in ls_pcie_clear_multifunction()  local
71 	iowrite8(PCI_HEADER_TYPE_BRIDGE, pci->dbi_base + PCI_HEADER_TYPE);  in ls_pcie_clear_multifunction()
78 	struct dw_pcie *pci = pcie->pci;  in ls_pcie_drop_msg_tlp()  local
80 	val = ioread32(pci->dbi_base + PCIE_STRFMR1);  in ls_pcie_drop_msg_tlp()
82 	iowrite32(val, pci->dbi_base + PCIE_STRFMR1);  in ls_pcie_drop_msg_tlp()
85 /* Forward error response of outbound non-posted requests */
88 	struct dw_pcie *pci = pcie->pci;  in ls_pcie_fix_error_response()  local
90 	iowrite32(PCIE_ABSERR_SETTING, pci->dbi_base + PCIE_ABSERR);  in ls_pcie_fix_error_response()
95 	if (pcie->big_endian)  in ls_pcie_pf_readl()
96 		return ioread32be(pcie->pf_base + off);  in ls_pcie_pf_readl()
98 	return ioread32(pcie->pf_base + off);  in ls_pcie_pf_readl()
103 	if (pcie->big_endian)  in ls_pcie_pf_writel()
104 		iowrite32be(val, pcie->pf_base + off);  in ls_pcie_pf_writel()
106 		iowrite32(val, pcie->pf_base + off);  in ls_pcie_pf_writel()
111 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);  in ls_pcie_send_turnoff_msg()  local
112 	struct ls_pcie *pcie = to_ls_pcie(pci);  in ls_pcie_send_turnoff_msg()
125 		dev_err(pcie->pci->dev, "PME_Turn_off timeout\n");  in ls_pcie_send_turnoff_msg()
130 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);  in ls_pcie_exit_from_l2()  local
131 	struct ls_pcie *pcie = to_ls_pcie(pci);  in ls_pcie_exit_from_l2()
152 		dev_err(pcie->pci->dev, "L2 exit timeout\n");  in ls_pcie_exit_from_l2()
157 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);  in ls_pcie_host_init()  local
158 	struct ls_pcie *pcie = to_ls_pcie(pci);  in ls_pcie_host_init()
162 	dw_pcie_dbi_ro_wr_en(pci);  in ls_pcie_host_init()
164 	dw_pcie_dbi_ro_wr_dis(pci);  in ls_pcie_host_init()
186 	{ .compatible = "fsl,ls1012a-pcie", .data = &layerscape_drvdata },
187 	{ .compatible = "fsl,ls1021a-pcie", .data = &ls1021a_drvdata },
188 	{ .compatible = "fsl,ls1028a-pcie", .data = &layerscape_drvdata },
189 	{ .compatible = "fsl,ls1043a-pcie", .data = &ls1021a_drvdata },
190 	{ .compatible = "fsl,ls1046a-pcie", .data = &layerscape_drvdata },
191 	{ .compatible = "fsl,ls2080a-pcie", .data = &layerscape_drvdata },
192 	{ .compatible = "fsl,ls2085a-pcie", .data = &layerscape_drvdata },
193 	{ .compatible = "fsl,ls2088a-pcie", .data = &layerscape_drvdata },
194 	{ .compatible = "fsl,ls1088a-pcie", .data = &layerscape_drvdata },
200 	struct device *dev = &pdev->dev;  in ls_pcie_probe()  local
201 	struct dw_pcie *pci;  in ls_pcie_probe()  local
205 	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);  in ls_pcie_probe()
207 		return -ENOMEM;  in ls_pcie_probe()
209 	pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);  in ls_pcie_probe()
210 	if (!pci)  in ls_pcie_probe()
211 		return -ENOMEM;  in ls_pcie_probe()
213 	pcie->drvdata = of_device_get_match_data(dev);  in ls_pcie_probe()
215 	pci->dev = dev;  in ls_pcie_probe()
216 	pci->pp.ops = &ls_pcie_host_ops;  in ls_pcie_probe()
218 	pcie->pci = pci;  in ls_pcie_probe()
221 	pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);  in ls_pcie_probe()
222 	if (IS_ERR(pci->dbi_base))  in ls_pcie_probe()
223 		return PTR_ERR(pci->dbi_base);  in ls_pcie_probe()
225 	pcie->big_endian = of_property_read_bool(dev->of_node, "big-endian");  in ls_pcie_probe()
227 	pcie->pf_base = pci->dbi_base + pcie->drvdata->pf_off;  in ls_pcie_probe()
230 		return -ENODEV;  in ls_pcie_probe()
234 	return dw_pcie_host_init(&pci->pp);  in ls_pcie_probe()
237 static int ls_pcie_suspend_noirq(struct device *dev)  in ls_pcie_suspend_noirq()  argument
239 	struct ls_pcie *pcie = dev_get_drvdata(dev);  in ls_pcie_suspend_noirq()
241 	if (!pcie->drvdata->pm_support)  in ls_pcie_suspend_noirq()
244 	return dw_pcie_suspend_noirq(pcie->pci);  in ls_pcie_suspend_noirq()
247 static int ls_pcie_resume_noirq(struct device *dev)  in ls_pcie_resume_noirq()  argument
249 	struct ls_pcie *pcie = dev_get_drvdata(dev);  in ls_pcie_resume_noirq()
251 	if (!pcie->drvdata->pm_support)  in ls_pcie_resume_noirq()
254 	ls_pcie_exit_from_l2(&pcie->pci->pp);  in ls_pcie_resume_noirq()
256 	return dw_pcie_resume_noirq(pcie->pci);  in ls_pcie_resume_noirq()
266 		.name = "layerscape-pcie",