drivers/pci/pci.h

   1 /* Functions internal to the PCI core code */
   2
   3 extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
   4 extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
   5 extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
   6 extern void pci_cleanup_rom(struct pci_dev *dev);
   7
   8 /* Firmware callbacks */
   9 extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev,
  10                                                 pm_message_t state);
  11 extern int (*platform_pci_set_power_state)(struct pci_dev *dev,
  12                                                 pci_power_t state);
  13
  14 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
  15 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
  16 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
  17 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
  18 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
  19 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
  20
  21 struct pci_vpd_ops {
  22         int (*read)(struct pci_dev *dev, int pos, int size, char *buf);
  23         int (*write)(struct pci_dev *dev, int pos, int size, const char *buf);
  24         int (*get_size)(struct pci_dev *dev);
  25         void (*release)(struct pci_dev *dev);
  26 };
  27
  28 struct pci_vpd {
  29         struct pci_vpd_ops *ops;
  30         struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
  31 };
  32
  33 extern int pci_vpd_pci22_init(struct pci_dev *dev);
  34 static inline void pci_vpd_release(struct pci_dev *dev)
  35 {
  36         if (dev->vpd)
  37                 dev->vpd->ops->release(dev);
  38 }
  39
  40 /* PCI /proc functions */
  41 #ifdef CONFIG_PROC_FS
  42 extern int pci_proc_attach_device(struct pci_dev *dev);
  43 extern int pci_proc_detach_device(struct pci_dev *dev);
  44 extern int pci_proc_detach_bus(struct pci_bus *bus);
  45 #else
  46 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
  47 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
  48 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
  49 #endif
  50
  51 /* Functions for PCI Hotplug drivers to use */
  52 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
  53
  54 extern void pci_remove_legacy_files(struct pci_bus *bus);
  55
  56 /* Lock for read/write access to pci device and bus lists */
  57 extern struct rw_semaphore pci_bus_sem;
  58
  59 extern unsigned int pci_pm_d3_delay;
  60
  61 #ifdef CONFIG_PCI_MSI
  62 void pci_no_msi(void);
  63 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
  64 #else
  65 static inline void pci_no_msi(void) { }
  66 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
  67 #endif
  68
  69 #ifdef CONFIG_PCIEAER
  70 void pci_no_aer(void);
  71 #else
  72 static inline void pci_no_aer(void) { }
  73 #endif
  74
  75 static inline int pci_no_d1d2(struct pci_dev *dev)
  76 {
  77         unsigned int parent_dstates = 0;
  78
  79         if (dev->bus->self)
  80                 parent_dstates = dev->bus->self->no_d1d2;
  81         return (dev->no_d1d2 || parent_dstates);
  82
  83 }
  84 extern int pcie_mch_quirk;
  85 extern struct device_attribute pci_dev_attrs[];
  86 extern struct device_attribute dev_attr_cpuaffinity;
  87
  88 /**
  89  * pci_match_one_device - Tell if a PCI device structure has a matching
  90  *                        PCI device id structure
  91  * @id: single PCI device id structure to match
  92  * @dev: the PCI device structure to match against
  93  *
  94  * Returns the matching pci_device_id structure or %NULL if there is no match.
  95  */
  96 static inline const struct pci_device_id *
  97 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
  98 {
  99         if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
 100             (id->device == PCI_ANY_ID || id->device == dev->device) &&
 101             (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
 102             (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
 103             !((id->class ^ dev->class) & id->class_mask))
 104                 return id;
 105         return NULL;
 106 }
 107
 108 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);