drivers/pci/pci.h

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