1/*
2 * include/asm-xtensa/pci-bridge.h
3 *
4 * This file is subject to the terms and conditions of the GNU General
5 * Public License.  See the file "COPYING" in the main directory of
6 * this archive for more details.
7 *
8 * Copyright (C) 2005 Tensilica Inc.
9 */
10
11#ifndef _XTENSA_PCI_BRIDGE_H
12#define _XTENSA_PCI_BRIDGE_H
13
14struct device_node;
15struct pci_controller;
16
17/*
18 * pciauto_bus_scan() enumerates the pci space.
19 */
20
21extern int pciauto_bus_scan(struct pci_controller *, int);
22
23struct pci_space {
24	unsigned long start;
25	unsigned long end;
26	unsigned long base;
27};
28
29/*
30 * Structure of a PCI controller (host bridge)
31 */
32
33struct pci_controller {
34	int index;			/* used for pci_controller_num */
35	struct pci_controller *next;
36	struct pci_bus *bus;
37	void *arch_data;
38
39	int first_busno;
40	int last_busno;
41
42	struct pci_ops *ops;
43	volatile unsigned int *cfg_addr;
44	volatile unsigned char *cfg_data;
45
46	/* Currently, we limit ourselves to 1 IO range and 3 mem
47	 * ranges since the common pci_bus structure can't handle more
48	 */
49	struct resource	io_resource;
50	struct resource mem_resources[3];
51	int mem_resource_count;
52
53	/* Host bridge I/O and Memory space
54	 * Used for BAR placement algorithms
55	 */
56	struct pci_space io_space;
57	struct pci_space mem_space;
58
59	/* Return the interrupt number fo a device. */
60	int (*map_irq)(struct pci_dev*, u8, u8);
61
62};
63
64static inline void pcibios_init_resource(struct resource *res,
65		unsigned long start, unsigned long end, int flags, char *name)
66{
67	res->start = start;
68	res->end = end;
69	res->flags = flags;
70	res->name = name;
71	res->parent = NULL;
72	res->sibling = NULL;
73	res->child = NULL;
74}
75
76#endif	/* _XTENSA_PCI_BRIDGE_H */
77