tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* Functions internal to the PCI core code */
2
3extern int pci_uevent(struct device *dev, char **envp, int num_envp,
4 char *buffer, int buffer_size);
5extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
6extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
7extern void pci_cleanup_rom(struct pci_dev *dev);
8extern int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
9 resource_size_t size, resource_size_t align,
10 resource_size_t min, unsigned int type_mask,
11 void (*alignf)(void *, struct resource *,
12 resource_size_t, resource_size_t),
13 void *alignf_data);
14/* Firmware callbacks */
15extern int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
16extern int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t state);
17
18extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
19extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
20extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
21extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
22extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
23extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
24
25/* PCI /proc functions */
26#ifdef CONFIG_PROC_FS
27extern int pci_proc_attach_device(struct pci_dev *dev);
28extern int pci_proc_detach_device(struct pci_dev *dev);
29extern int pci_proc_detach_bus(struct pci_bus *bus);
30#else
31static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
32static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
33static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
34#endif
35
36/* Functions for PCI Hotplug drivers to use */
37extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
38extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
39
40extern void pci_remove_legacy_files(struct pci_bus *bus);
41
42/* Lock for read/write access to pci device and bus lists */
43extern struct rw_semaphore pci_bus_sem;
44
45#ifdef CONFIG_X86_IO_APIC
46extern int pci_msi_quirk;
47#else
48#define pci_msi_quirk 0
49#endif
50extern unsigned int pci_pm_d3_delay;
51#ifdef CONFIG_PCI_MSI
52void disable_msi_mode(struct pci_dev *dev, int pos, int type);
53void pci_no_msi(void);
54#else
55static inline void disable_msi_mode(struct pci_dev *dev, int pos, int type) { }
56static inline void pci_no_msi(void) { }
57#endif
58#if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
59int pci_save_msi_state(struct pci_dev *dev);
60int pci_save_msix_state(struct pci_dev *dev);
61void pci_restore_msi_state(struct pci_dev *dev);
62void pci_restore_msix_state(struct pci_dev *dev);
63#else
64static inline int pci_save_msi_state(struct pci_dev *dev) { return 0; }
65static inline int pci_save_msix_state(struct pci_dev *dev) { return 0; }
66static inline void pci_restore_msi_state(struct pci_dev *dev) {}
67static inline void pci_restore_msix_state(struct pci_dev *dev) {}
68#endif
69static inline int pci_no_d1d2(struct pci_dev *dev)
70{
71 unsigned int parent_dstates = 0;
72
73 if (dev->bus->self)
74 parent_dstates = dev->bus->self->no_d1d2;
75 return (dev->no_d1d2 || parent_dstates);
76
77}
78extern int pcie_mch_quirk;
79extern struct device_attribute pci_dev_attrs[];
80extern struct class_device_attribute class_device_attr_cpuaffinity;
81
82/**
83 * pci_match_one_device - Tell if a PCI device structure has a matching
84 * PCI device id structure
85 * @id: single PCI device id structure to match
86 * @dev: the PCI device structure to match against
87 *
88 * Returns the matching pci_device_id structure or %NULL if there is no match.
89 */
90static inline const struct pci_device_id *
91pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
92{
93 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
94 (id->device == PCI_ANY_ID || id->device == dev->device) &&
95 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
96 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
97 !((id->class ^ dev->class) & id->class_mask))
98 return id;
99 return NULL;
100}
101