| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright 2016 Broadcom |
| */ |
| #ifndef DRIVERS_PCI_ECAM_H |
| #define DRIVERS_PCI_ECAM_H |
| |
| #include <linux/pci.h> |
| #include <linux/kernel.h> |
| #include <linux/platform_device.h> |
| |
| /* |
| * struct to hold pci ops and bus shift of the config window |
| * for a PCI controller. |
| */ |
| struct pci_config_window; |
| struct pci_ecam_ops { |
| unsigned int bus_shift; |
| struct pci_ops pci_ops; |
| int (*init)(struct pci_config_window *); |
| }; |
| |
| /* |
| * struct to hold the mappings of a config space window. This |
| * is expected to be used as sysdata for PCI controllers that |
| * use ECAM. |
| */ |
| struct pci_config_window { |
| struct resource res; |
| struct resource busr; |
| void *priv; |
| struct pci_ecam_ops *ops; |
| union { |
| void __iomem *win; /* 64-bit single mapping */ |
| void __iomem **winp; /* 32-bit per-bus mapping */ |
| }; |
| struct device *parent;/* ECAM res was from this dev */ |
| }; |
| |
| /* create and free pci_config_window */ |
| struct pci_config_window *pci_ecam_create(struct device *dev, |
| struct resource *cfgres, struct resource *busr, |
| struct pci_ecam_ops *ops); |
| void pci_ecam_free(struct pci_config_window *cfg); |
| |
| /* map_bus when ->sysdata is an instance of pci_config_window */ |
| void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn, |
| int where); |
| /* default ECAM ops */ |
| extern struct pci_ecam_ops pci_generic_ecam_ops; |
| |
| #if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS) |
| extern struct pci_ecam_ops pci_32b_ops; /* 32-bit accesses only */ |
| extern struct pci_ecam_ops hisi_pcie_ops; /* HiSilicon */ |
| extern struct pci_ecam_ops thunder_pem_ecam_ops; /* Cavium ThunderX 1.x & 2.x */ |
| extern struct pci_ecam_ops pci_thunder_ecam_ops; /* Cavium ThunderX 1.x */ |
| extern struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */ |
| extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */ |
| #endif |
| |
| #ifdef CONFIG_PCI_HOST_COMMON |
| /* for DT-based PCI controllers that support ECAM */ |
| int pci_host_common_probe(struct platform_device *pdev, |
| struct pci_ecam_ops *ops); |
| int pci_host_common_remove(struct platform_device *pdev); |
| #endif |
| #endif |