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
13 struct pci_sys_data;
14 struct pci_ops;
15 struct pci_bus;
16 struct pci_host_bridge;
17 struct device;
18
19 struct hw_pci {
20 struct pci_ops *ops;
21 int nr_controllers;
22 void **private_data;
23 int (*setup)(int nr, struct pci_sys_data *);
24 int (*scan)(int nr, struct pci_host_bridge *);
25 void (*preinit)(void);
26 void (*postinit)(void);
27 u8 (*swizzle)(struct pci_dev *dev, u8 *pin);
28 int (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
29 };
30
31 /*
32 * Per-controller structure
33 */
34 struct pci_sys_data {
35 struct list_head node;
36 int busnr; /* primary bus number */
37 u64 mem_offset; /* bus->cpu memory mapping offset */
38 unsigned long io_offset; /* bus->cpu IO mapping offset */
39 struct pci_bus *bus; /* PCI bus */
40 struct list_head resources; /* root bus resources (apertures) */
41 struct resource io_res;
42 char io_res_name[12];
43 /* Bridge swizzling */
44 u8 (*swizzle)(struct pci_dev *, u8 *);
45 /* IRQ mapping */
46 int (*map_irq)(const struct pci_dev *, u8, u8);
47 void *private_data; /* platform controller private data */
48 };
49
50 /*
51 * Call this with your hw_pci struct to initialise the PCI system.
52 */
53 void pci_common_init_dev(struct device *, struct hw_pci *);
54
55 /*
56 * Compatibility wrapper for older platforms that do not care about
57 * passing the parent device.
58 */
pci_common_init(struct hw_pci * hw)59 static inline void pci_common_init(struct hw_pci *hw)
60 {
61 pci_common_init_dev(NULL, hw);
62 }
63
64 /*
65 * Setup early fixed I/O mapping.
66 */
67 #if defined(CONFIG_PCI)
68 extern void pci_map_io_early(unsigned long pfn);
69 #else
pci_map_io_early(unsigned long pfn)70 static inline void pci_map_io_early(unsigned long pfn) {}
71 #endif
72
73 /*
74 * PCI controllers
75 */
76 extern struct pci_ops iop3xx_ops;
77 extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
78 extern void iop3xx_pci_preinit(void);
79 extern void iop3xx_pci_preinit_cond(void);
80
81 extern struct pci_ops dc21285_ops;
82 extern int dc21285_setup(int nr, struct pci_sys_data *);
83 extern void dc21285_preinit(void);
84 extern void dc21285_postinit(void);
85
86 #endif /* __ASM_MACH_PCI_H */
87