1/* Functions internal to the PCI core code */
2
3extern int __must_check __pci_reenable_device(struct pci_dev *);
4extern int pci_uevent(struct device *dev, char **envp, int num_envp,
5		      char *buffer, int buffer_size);
6extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
7extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
8extern void pci_cleanup_rom(struct pci_dev *dev);
9extern int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
10				  resource_size_t size, resource_size_t align,
11				  resource_size_t min, unsigned int type_mask,
12				  void (*alignf)(void *, struct resource *,
13					      resource_size_t, resource_size_t),
14				  void *alignf_data);
15/* Firmware callbacks */
16extern int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
17extern int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t state);
18
19extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
20extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
21extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
22extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
23extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
24extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
25
26/* PCI /proc functions */
27#ifdef CONFIG_PROC_FS
28extern int pci_proc_attach_device(struct pci_dev *dev);
29extern int pci_proc_detach_device(struct pci_dev *dev);
30extern int pci_proc_detach_bus(struct pci_bus *bus);
31#else
32static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
33static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
34static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
35#endif
36
37/* Functions for PCI Hotplug drivers to use */
38extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
39extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
40
41extern void pci_remove_legacy_files(struct pci_bus *bus);
42
43/* Lock for read/write access to pci device and bus lists */
44extern struct rw_semaphore pci_bus_sem;
45
46extern unsigned int pci_pm_d3_delay;
47
48#ifdef CONFIG_PCI_MSI
49void pci_no_msi(void);
50extern void pci_msi_init_pci_dev(struct pci_dev *dev);
51#else
52static inline void pci_no_msi(void) { }
53static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
54#endif
55
56#if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
57void pci_restore_msi_state(struct pci_dev *dev);
58#else
59static inline void pci_restore_msi_state(struct pci_dev *dev) {}
60#endif
61
62static inline int pci_no_d1d2(struct pci_dev *dev)
63{
64	unsigned int parent_dstates = 0;
65
66	if (dev->bus->self)
67		parent_dstates = dev->bus->self->no_d1d2;
68	return (dev->no_d1d2 || parent_dstates);
69
70}
71extern int pcie_mch_quirk;
72extern struct device_attribute pci_dev_attrs[];
73extern struct class_device_attribute class_device_attr_cpuaffinity;
74
75/**
76 * pci_match_one_device - Tell if a PCI device structure has a matching
77 *                        PCI device id structure
78 * @id: single PCI device id structure to match
79 * @dev: the PCI device structure to match against
80 *
81 * Returns the matching pci_device_id structure or %NULL if there is no match.
82 */
83static inline const struct pci_device_id *
84pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
85{
86	if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
87	    (id->device == PCI_ANY_ID || id->device == dev->device) &&
88	    (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
89	    (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
90	    !((id->class ^ dev->class) & id->class_mask))
91		return id;
92	return NULL;
93}
94