1/*
2 *  arch/arm/include/asm/mach/pci.h
3 *
4 *  Copyright (C) 2000 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef __ASM_MACH_PCI_H
12#define __ASM_MACH_PCI_H
13
14#include <linux/ioport.h>
15
16struct pci_sys_data;
17struct pci_ops;
18struct pci_bus;
19struct device;
20
21struct hw_pci {
22#ifdef CONFIG_PCI_MSI
23	struct msi_controller *msi_ctrl;
24#endif
25	struct pci_ops	*ops;
26	int		nr_controllers;
27	void		**private_data;
28	int		(*setup)(int nr, struct pci_sys_data *);
29	struct pci_bus *(*scan)(int nr, struct pci_sys_data *);
30	void		(*preinit)(void);
31	void		(*postinit)(void);
32	u8		(*swizzle)(struct pci_dev *dev, u8 *pin);
33	int		(*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
34	resource_size_t (*align_resource)(struct pci_dev *dev,
35					  const struct resource *res,
36					  resource_size_t start,
37					  resource_size_t size,
38					  resource_size_t align);
39};
40
41/*
42 * Per-controller structure
43 */
44struct pci_sys_data {
45#ifdef CONFIG_PCI_MSI
46	struct msi_controller *msi_ctrl;
47#endif
48	struct list_head node;
49	int		busnr;		/* primary bus number			*/
50	u64		mem_offset;	/* bus->cpu memory mapping offset	*/
51	unsigned long	io_offset;	/* bus->cpu IO mapping offset		*/
52	struct pci_bus	*bus;		/* PCI bus				*/
53	struct list_head resources;	/* root bus resources (apertures)       */
54	struct resource io_res;
55	char		io_res_name[12];
56					/* Bridge swizzling			*/
57	u8		(*swizzle)(struct pci_dev *, u8 *);
58					/* IRQ mapping				*/
59	int		(*map_irq)(const struct pci_dev *, u8, u8);
60					/* Resource alignement requirements	*/
61	resource_size_t (*align_resource)(struct pci_dev *dev,
62					  const struct resource *res,
63					  resource_size_t start,
64					  resource_size_t size,
65					  resource_size_t align);
66	void		*private_data;	/* platform controller private data	*/
67};
68
69/*
70 * Call this with your hw_pci struct to initialise the PCI system.
71 */
72void pci_common_init_dev(struct device *, struct hw_pci *);
73
74/*
75 * Compatibility wrapper for older platforms that do not care about
76 * passing the parent device.
77 */
78static inline void pci_common_init(struct hw_pci *hw)
79{
80	pci_common_init_dev(NULL, hw);
81}
82
83/*
84 * Setup early fixed I/O mapping.
85 */
86#if defined(CONFIG_PCI)
87extern void pci_map_io_early(unsigned long pfn);
88#else
89static inline void pci_map_io_early(unsigned long pfn) {}
90#endif
91
92/*
93 * PCI controllers
94 */
95extern struct pci_ops iop3xx_ops;
96extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
97extern void iop3xx_pci_preinit(void);
98extern void iop3xx_pci_preinit_cond(void);
99
100extern struct pci_ops dc21285_ops;
101extern int dc21285_setup(int nr, struct pci_sys_data *);
102extern void dc21285_preinit(void);
103extern void dc21285_postinit(void);
104
105#endif /* __ASM_MACH_PCI_H */
106