xref: /openbmc/linux/arch/arm/include/asm/mach/pci.h (revision e23feb16)
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 
16 struct pci_sys_data;
17 struct pci_ops;
18 struct pci_bus;
19 struct device;
20 
21 struct hw_pci {
22 #ifdef CONFIG_PCI_DOMAINS
23 	int		domain;
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 	void		(*add_bus)(struct pci_bus *bus);
40 	void		(*remove_bus)(struct pci_bus *bus);
41 };
42 
43 /*
44  * Per-controller structure
45  */
46 struct pci_sys_data {
47 #ifdef CONFIG_PCI_DOMAINS
48 	int		domain;
49 #endif
50 	struct list_head node;
51 	int		busnr;		/* primary bus number			*/
52 	u64		mem_offset;	/* bus->cpu memory mapping offset	*/
53 	unsigned long	io_offset;	/* bus->cpu IO mapping offset		*/
54 	struct pci_bus	*bus;		/* PCI bus				*/
55 	struct list_head resources;	/* root bus resources (apertures)       */
56 	struct resource io_res;
57 	char		io_res_name[12];
58 					/* Bridge swizzling			*/
59 	u8		(*swizzle)(struct pci_dev *, u8 *);
60 					/* IRQ mapping				*/
61 	int		(*map_irq)(const struct pci_dev *, u8, u8);
62 					/* Resource alignement requirements	*/
63 	resource_size_t (*align_resource)(struct pci_dev *dev,
64 					  const struct resource *res,
65 					  resource_size_t start,
66 					  resource_size_t size,
67 					  resource_size_t align);
68 	void		(*add_bus)(struct pci_bus *bus);
69 	void		(*remove_bus)(struct pci_bus *bus);
70 	void		*private_data;	/* platform controller private data	*/
71 };
72 
73 /*
74  * Call this with your hw_pci struct to initialise the PCI system.
75  */
76 void pci_common_init_dev(struct device *, struct hw_pci *);
77 
78 /*
79  * Compatibility wrapper for older platforms that do not care about
80  * passing the parent device.
81  */
82 static inline void pci_common_init(struct hw_pci *hw)
83 {
84 	pci_common_init_dev(NULL, hw);
85 }
86 
87 /*
88  * Setup early fixed I/O mapping.
89  */
90 #if defined(CONFIG_PCI)
91 extern void pci_map_io_early(unsigned long pfn);
92 #else
93 static inline void pci_map_io_early(unsigned long pfn) {}
94 #endif
95 
96 /*
97  * PCI controllers
98  */
99 extern struct pci_ops iop3xx_ops;
100 extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
101 extern void iop3xx_pci_preinit(void);
102 extern void iop3xx_pci_preinit_cond(void);
103 
104 extern struct pci_ops dc21285_ops;
105 extern int dc21285_setup(int nr, struct pci_sys_data *);
106 extern void dc21285_preinit(void);
107 extern void dc21285_postinit(void);
108 
109 extern struct pci_ops via82c505_ops;
110 extern int via82c505_setup(int nr, struct pci_sys_data *);
111 extern void via82c505_init(void *sysdata);
112 
113 #endif /* __ASM_MACH_PCI_H */
114