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 int (*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 #ifdef CONFIG_PCI_MSI
  46 extern int pci_msi_quirk;
  47 #else
  48 #define pci_msi_quirk 0
  49 #endif
  50 extern unsigned int pci_pm_d3_delay;
  51 #ifdef CONFIG_PCI_MSI
  52 void disable_msi_mode(struct pci_dev *dev, int pos, int type);
  53 void pci_no_msi(void);
  54 #else
  55 static inline void disable_msi_mode(struct pci_dev *dev, int pos, int type) { }
  56 static inline void pci_no_msi(void) { }
  57 #endif
  58 #if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
  59 int pci_save_msi_state(struct pci_dev *dev);
  60 int pci_save_msix_state(struct pci_dev *dev);
  61 void pci_restore_msi_state(struct pci_dev *dev);
  62 void pci_restore_msix_state(struct pci_dev *dev);
  63 #else
  64 static inline int pci_save_msi_state(struct pci_dev *dev) { return 0; }
  65 static inline int pci_save_msix_state(struct pci_dev *dev) { return 0; }
  66 static inline void pci_restore_msi_state(struct pci_dev *dev) {}
  67 static inline void pci_restore_msix_state(struct pci_dev *dev) {}
  68 #endif
  69 static 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 }
  78 extern int pcie_mch_quirk;
  79 extern struct device_attribute pci_dev_attrs[];
  80 extern 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  */
  90 static inline const struct pci_device_id *
  91 pci_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