1 // SPDX-License-Identifier: GPL-2.0
3  * Loongson PCI Host Controller Driver
10 #include <linux/pci.h>
13 #include "../pci.h"
38 	dev->class = PCI_CLASS_BRIDGE_PCI << 8;  in bridge_class_quirk()
53 	pdev->mmio_always_on = 1;  in system_bus_quirk()
54 	pdev->non_compliant_bars = 1;  in system_bus_quirk()
65 	struct pci_bus *bus = dev->bus;  in loongson_mrrs_quirk()
76 		bridge = bus->self;  in loongson_mrrs_quirk()
77 		bus = bus->parent;  in loongson_mrrs_quirk()
104 	return priv->cfg1_base + addroff;  in cfg1_map()
115 	return priv->cfg0_base + addroff;  in cfg0_map()
121 	unsigned char busnum = bus->number;  in pci_loongson_map_bus()
129 	if (priv->flags & FLAG_DEV_FIX && busnum != 0 &&  in pci_loongson_map_bus()
134 	if (where < PCI_CFG_SPACE_SIZE && priv->cfg0_base)  in pci_loongson_map_bus()
138 	if (where < PCI_CFG_SPACE_EXP_SIZE && priv->cfg1_base)  in pci_loongson_map_bus()
162 /* H/w only accept 32-bit PCI operations */
170 	{ .compatible = "loongson,ls2k-pci",
172 	{ .compatible = "loongson,ls7a-pci",
174 	{ .compatible = "loongson,rs780e-pci",
182 	struct device *dev = &pdev->dev;  in loongson_pci_probe()
183 	struct device_node *node = dev->of_node;  in loongson_pci_probe()
188 		return -ENODEV;  in loongson_pci_probe()
192 		return -ENODEV;  in loongson_pci_probe()
195 	priv->pdev = pdev;  in loongson_pci_probe()
196 	priv->flags = (unsigned long)of_device_get_match_data(dev);  in loongson_pci_probe()
201 		return -EINVAL;  in loongson_pci_probe()
204 	priv->cfg0_base = devm_pci_remap_cfg_resource(dev, regs);  in loongson_pci_probe()
205 	if (IS_ERR(priv->cfg0_base))  in loongson_pci_probe()
206 		return PTR_ERR(priv->cfg0_base);  in loongson_pci_probe()
209 	if (priv->flags & FLAG_CFG1) {  in loongson_pci_probe()
214 			priv->cfg1_base = devm_pci_remap_cfg_resource(dev, regs);  in loongson_pci_probe()
215 			if (IS_ERR(priv->cfg1_base))  in loongson_pci_probe()
216 				priv->cfg1_base = NULL;  in loongson_pci_probe()
220 	bridge->sysdata = priv;  in loongson_pci_probe()
221 	bridge->ops = &loongson_pci_ops;  in loongson_pci_probe()
222 	bridge->map_irq = loongson_map_irq;  in loongson_pci_probe()
229 		.name = "loongson-pci",