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