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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * arch/arm/include/asm/mach/pci.h
4 *
5 * Copyright (C) 2000 Russell King
6 */
7
8#ifndef __ASM_MACH_PCI_H
9#define __ASM_MACH_PCI_H
10
11#include <linux/ioport.h>
12
13struct pci_sys_data;
14struct pci_ops;
15struct pci_bus;
16struct pci_host_bridge;
17struct device;
18
19struct hw_pci {
20 struct msi_controller *msi_ctrl;
21 struct pci_ops *ops;
22 int nr_controllers;
23 unsigned int io_optional:1;
24 void **private_data;
25 int (*setup)(int nr, struct pci_sys_data *);
26 int (*scan)(int nr, struct pci_host_bridge *);
27 void (*preinit)(void);
28 void (*postinit)(void);
29 u8 (*swizzle)(struct pci_dev *dev, u8 *pin);
30 int (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
31 resource_size_t (*align_resource)(struct pci_dev *dev,
32 const struct resource *res,
33 resource_size_t start,
34 resource_size_t size,
35 resource_size_t align);
36};
37
38/*
39 * Per-controller structure
40 */
41struct pci_sys_data {
42 struct list_head node;
43 int busnr; /* primary bus number */
44 u64 mem_offset; /* bus->cpu memory mapping offset */
45 unsigned long io_offset; /* bus->cpu IO mapping offset */
46 struct pci_bus *bus; /* PCI bus */
47 struct list_head resources; /* root bus resources (apertures) */
48 struct resource io_res;
49 char io_res_name[12];
50 /* Bridge swizzling */
51 u8 (*swizzle)(struct pci_dev *, u8 *);
52 /* IRQ mapping */
53 int (*map_irq)(const struct pci_dev *, u8, u8);
54 void *private_data; /* platform controller private data */
55};
56
57/*
58 * Call this with your hw_pci struct to initialise the PCI system.
59 */
60void pci_common_init_dev(struct device *, struct hw_pci *);
61
62/*
63 * Compatibility wrapper for older platforms that do not care about
64 * passing the parent device.
65 */
66static inline void pci_common_init(struct hw_pci *hw)
67{
68 pci_common_init_dev(NULL, hw);
69}
70
71/*
72 * Setup early fixed I/O mapping.
73 */
74#if defined(CONFIG_PCI)
75extern void pci_map_io_early(unsigned long pfn);
76#else
77static inline void pci_map_io_early(unsigned long pfn) {}
78#endif
79
80/*
81 * PCI controllers
82 */
83extern struct pci_ops iop3xx_ops;
84extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
85extern void iop3xx_pci_preinit(void);
86extern void iop3xx_pci_preinit_cond(void);
87
88extern struct pci_ops dc21285_ops;
89extern int dc21285_setup(int nr, struct pci_sys_data *);
90extern void dc21285_preinit(void);
91extern void dc21285_postinit(void);
92
93#endif /* __ASM_MACH_PCI_H */