xref: /openbmc/linux/drivers/pci/pci.h (revision e868d61272caa648214046a096e5a6bfc068dc8c)
1 /* Functions internal to the PCI core code */
2 
3 extern int __must_check __pci_reenable_device(struct pci_dev *);
4 extern int pci_uevent(struct device *dev, char **envp, int num_envp,
5 		      char *buffer, int buffer_size);
6 extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
7 extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
8 extern void pci_cleanup_rom(struct pci_dev *dev);
9 extern 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 */
16 extern int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
17 extern int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t state);
18 
19 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
20 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
21 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
22 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
23 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
24 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
25 
26 /* PCI /proc functions */
27 #ifdef CONFIG_PROC_FS
28 extern int pci_proc_attach_device(struct pci_dev *dev);
29 extern int pci_proc_detach_device(struct pci_dev *dev);
30 extern int pci_proc_detach_bus(struct pci_bus *bus);
31 #else
32 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
33 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
34 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
35 #endif
36 
37 /* Functions for PCI Hotplug drivers to use */
38 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
39 extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
40 
41 extern void pci_remove_legacy_files(struct pci_bus *bus);
42 
43 /* Lock for read/write access to pci device and bus lists */
44 extern struct rw_semaphore pci_bus_sem;
45 
46 extern unsigned int pci_pm_d3_delay;
47 
48 #ifdef CONFIG_PCI_MSI
49 void pci_no_msi(void);
50 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
51 #else
52 static inline void pci_no_msi(void) { }
53 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
54 #endif
55 
56 #if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
57 void pci_restore_msi_state(struct pci_dev *dev);
58 #else
59 static inline void pci_restore_msi_state(struct pci_dev *dev) {}
60 #endif
61 
62 static 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 }
71 extern int pcie_mch_quirk;
72 extern struct device_attribute pci_dev_attrs[];
73 extern 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  */
83 static inline const struct pci_device_id *
84 pci_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 
95