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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
#ifndef _ASM_POWERPC_PCI_BRIDGE_H
#define _ASM_POWERPC_PCI_BRIDGE_H
#ifdef __KERNEL__
#ifndef CONFIG_PPC64
#include <asm-ppc/pci-bridge.h>
#else
#include <linux/pci.h>
#include <linux/list.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;
int node;
void *arch_data;
struct list_head list_node;
struct device *parent;
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 void __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;
};
/*
* PCI stuff, for nodes representing PCI devices, pointed to
* by device_node->data.
*/
struct pci_controller;
struct iommu_table;
struct pci_dn {
int busno; /* pci bus number */
int bussubno; /* pci subordinate bus number */
int devfn; /* pci device and function number */
int class_code; /* pci device class */
#ifdef CONFIG_PPC_PSERIES
int eeh_mode; /* See eeh.h for possible EEH_MODEs */
int eeh_config_addr;
int eeh_pe_config_addr; /* new-style partition endpoint address */
int eeh_check_count; /* # times driver ignored error */
int eeh_freeze_count; /* # times this device froze up. */
#endif
int pci_ext_config_space; /* for pci devices */
struct pci_controller *phb; /* for pci devices */
struct iommu_table *iommu_table; /* for phb's or bridges */
struct pci_dev *pcidev; /* back-pointer to the pci device */
struct device_node *node; /* back-pointer to the device_node */
u32 config_space[16]; /* saved PCI config space */
};
/* Get the pointer to a device_node's pci_dn */
#define PCI_DN(dn) ((struct pci_dn *) (dn)->data)
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 (this will only happen once).
* In this case the sysdata will have been inherited from a PCI host
* bridge or a PCI-PCI bridge further up the tree, so it will point
* to a valid struct pci_dn, just not the one we want.
*/
static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev)
{
struct device_node *dn = dev->sysdata;
struct pci_dn *pdn = dn->data;
if (pdn && pdn->devfn == dev->devfn && pdn->busno == dev->bus->number)
return dn; /* fast path. sysdata is good */
return fetch_dev_dn(dev);
}
static inline int pci_device_from_OF_node(struct device_node *np,
u8 *bus, u8 *devfn)
{
if (!PCI_DN(np))
return -ENODEV;
*bus = PCI_DN(np)->busno;
*devfn = PCI_DN(np)->devfn;
return 0;
}
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) */
}
/** Find the bus corresponding to the indicated device node */
struct pci_bus * pcibios_find_pci_bus(struct device_node *dn);
extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
struct device_node *dev, int primary);
/** Remove all of the PCI devices under this bus */
void pcibios_remove_pci_devices(struct pci_bus *bus);
/** Discover new pci devices under this bus, and add them */
void pcibios_add_pci_devices(struct pci_bus * bus);
void pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus);
extern int pcibios_remove_root_bus(struct pci_controller *phb);
static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
{
struct device_node *busdn = bus->sysdata;
BUG_ON(busdn == NULL);
return PCI_DN(busdn)->phb;
}
extern struct pci_controller*
pci_find_hose_for_OF_device(struct device_node* node);
extern struct pci_controller *
pcibios_alloc_controller(struct device_node *dev);
extern void pcibios_free_controller(struct pci_controller *phb);
#ifdef CONFIG_PCI
extern unsigned long pci_address_to_pio(phys_addr_t address);
#else
static inline unsigned long pci_address_to_pio(phys_addr_t address)
{
return (unsigned long)-1;
}
#endif
/* Return values for ppc_md.pci_probe_mode function */
#define PCI_PROBE_NONE -1 /* Don't look at this bus at all */
#define PCI_PROBE_NORMAL 0 /* Do normal PCI probing */
#define PCI_PROBE_DEVTREE 1 /* Instantiate from device tree */
#ifdef CONFIG_NUMA
#define PHB_SET_NODE(PHB, NODE) ((PHB)->node = (NODE))
#else
#define PHB_SET_NODE(PHB, NODE) ((PHB)->node = -1)
#endif
#endif /* CONFIG_PPC64 */
#endif /* __KERNEL__ */
#endif
|
