blob: c4f9023ea5ed8a64e0a6f15f2c8c441f49312929 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
#ifdef __KERNEL__
#ifndef _ASM_PCI_BRIDGE_H
#define _ASM_PCI_BRIDGE_H
#include <linux/pci.h>
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
/*
* Structure of a PCI controller (host bridge)
*/
struct pci_controller {
struct pci_bus *bus;
char is_dynamic;
void *arch_data;
struct list_head list_node;
int first_busno;
int last_busno;
void __iomem *io_base_virt;
unsigned long io_base_phys;
/* Some machines have a non 1:1 mapping of
* the PCI memory space in the CPU bus space
*/
unsigned long pci_mem_offset;
unsigned long pci_io_size;
struct pci_ops *ops;
volatile unsigned int __iomem *cfg_addr;
volatile unsigned char __iomem *cfg_data;
/* Currently, we limit ourselves to 1 IO range and 3 mem
* ranges since the common pci_bus structure can't handle more
*/
struct resource io_resource;
struct resource mem_resources[3];
int global_number;
int local_number;
unsigned long buid;
unsigned long dma_window_base_cur;
unsigned long dma_window_size;
};
struct device_node *fetch_dev_dn(struct pci_dev *dev);
/* Get a device_node from a pci_dev. This code must be fast except in the case
* where the sysdata is incorrect and needs to be fixed up (hopefully just once)
*/
static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev)
{
struct device_node *dn = dev->sysdata;
if (dn->devfn == dev->devfn && dn->busno == dev->bus->number)
return dn; /* fast path. sysdata is good */
else
return fetch_dev_dn(dev);
}
static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
{
if (bus->self)
return pci_device_to_OF_node(bus->self);
else
return bus->sysdata; /* Must be root bus (PHB) */
}
extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
struct device_node *dev);
extern int pcibios_remove_root_bus(struct pci_controller *phb);
extern void phbs_remap_io(void);
static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
{
struct device_node *busdn = bus->sysdata;
BUG_ON(busdn == NULL);
return busdn->phb;
}
#endif
#endif /* __KERNEL__ */
|
