drivers/pci/pci.h

   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 disable_msi_mode(struct pci_dev *dev, int pos, int type);
  50 void pci_no_msi(void);
  51 #else
  52 static inline void disable_msi_mode(struct pci_dev *dev, int pos, int type) { }
  53 static inline void pci_no_msi(void) { }
  54 #endif
  55
  56 #if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
  57 int pci_save_msi_state(struct pci_dev *dev);
  58 void pci_restore_msi_state(struct pci_dev *dev);
  59 #else
  60 static inline int pci_save_msi_state(struct pci_dev *dev) { return 0; }
  61 static inline void pci_restore_msi_state(struct pci_dev *dev) {}
  62 #endif
  63
  64 static inline int pci_no_d1d2(struct pci_dev *dev)
  65 {
  66         unsigned int parent_dstates = 0;
  67
  68         if (dev->bus->self)
  69                 parent_dstates = dev->bus->self->no_d1d2;
  70         return (dev->no_d1d2 || parent_dstates);
  71
  72 }
  73 extern int pcie_mch_quirk;
  74 extern struct device_attribute pci_dev_attrs[];
  75 extern struct class_device_attribute class_device_attr_cpuaffinity;
  76
  77 /**
  78  * pci_match_one_device - Tell if a PCI device structure has a matching
  79  *                        PCI device id structure
  80  * @id: single PCI device id structure to match
  81  * @dev: the PCI device structure to match against
  82  *
  83  * Returns the matching pci_device_id structure or %NULL if there is no match.
  84  */
  85 static inline const struct pci_device_id *
  86 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
  87 {
  88         if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
  89             (id->device == PCI_ANY_ID || id->device == dev->device) &&
  90             (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
  91             (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
  92             !((id->class ^ dev->class) & id->class_mask))
  93                 return id;
  94         return NULL;
  95 }
  96